Technical & Industry Knowledge Base

Any kind of mechanical equipment will inevitably suffer from wear or damage during long-term high-load operation. This is no exception for concrete laser leveling machines. Because the performance of the parts is directly related to the working efficiency and service life of the entire concrete laser leveling machine, it is very necessary to master the replacement and maintenance methods of the various components of the leveling machine. Now let our professional technicians teach you how to correctly replace the various components of the concrete laser leveling machine. ▼ Laser leveling machine piston and piston ring replacement tips The piston with an upward arrow or other marks on the top should be installed in the direction specified by the mark; if there is no mark, the vortex pit on the top of the piston or the small notch next to the pit should be facing the injector side to ensure uniform mixing of the gas. When assembling the piston ring, the top with "up", "UP" and other marks should face up; the inner circle cut groove or chamfer of the twisted ring without a mark on the top should face down; the chrome-plated ring (shiny shell) should be installed in a piston ring groove, and the openings of each ring should be staggered by 120~180 degrees to ensure its sealing effect. ▼ Tips for replacing the cylinder gasket of a laser leveler If there is an oil hole, align it with the corresponding oil channel hole on the concrete laser leveler body and cylinder head to avoid friction of the valve mechanism on the cylinder head due to oil cutoff. If there is no oil channel hole and the front and back shapes are the same, it is determined by the material of the cylinder head: for aluminum alloy cylinder heads, the curled side of the cylinder head should face the cylinder body; for cast iron cylinder heads, the curled side of the cylinder head should face the cylinder head. ▼ Tips for replacing the main bearing cap, bearing shell, and bushing of the laser leveler The main bearing cap and the bearing seat of the concrete laser leveler are both processed by matching boring. They should be seated according to the matching mark. They must not be interchanged or the assembly direction changed at will to avoid damaging the coaxiality and dimensional accuracy of the main bearing seat hole. The bearing shell or bushing with an oil hole should be aligned with the corresponding oil channel hole on the bearing seat and bushing hole to ensure smooth oil passage. ▼ Tips for replacing connecting rods and connecting rod caps of laser levelers The connecting rods of horizontal diesel engines are split at 45 degrees. The section should be facing downward to change the stress of the connecting rod bolts. The connecting rod caps and connecting rods of concrete laser levelers are processed in pairs. When assembling, the matching marks should be on the same side to ensure that the roundness and cylindricity of the connecting rod bearings meet the specified requirements. Have you learned the methods and techniques for correctly replacing the pistons, piston rings, cylinder gaskets, main bearing caps, bearing shells, bushings, connecting rods, connecting rod caps and other parts of concrete laser levelers today? If you have any questions, you can call us directly for consultation. We will definitely have professional technicians to answer your questions in time.

In order to ensure the construction quality of concrete floor, more and more construction units now choose to use precision laser leveling machines to lay concrete floor. However, in the actual construction process, due to the inadequate cooperation of some enterprises in construction, or not strictly following the regulations to operate correctly, the quality of concrete floor construction is sometimes poor. In order to avoid such a situation from happening again, our company has made a detailed description of some matters related to the construction cooperation during the construction of the laser leveling machine. We hope that the relevant construction personnel will keep it in mind. ❖Wall line laying and leveling: Since the laser leveling machine cannot touch the wall, manual leveling is required within 200mm from the wall, so it is necessary to lay out the line as a reference for manual leveling. At the same time, set 2 to 3 leveling base points (ground design elevation, i.e. ±0.0) that are not disturbed during the construction period for the laser leveling machine to use at one time, and require good mutual visibility. Leveling point accuracy ±1mm. ❖Set templates (steel templates, the position is determined according to design requirements) around the columns to form separation seams. The elevation of the top surface of the template should be controlled within +0mm and -2mm to avoid affecting the flatness of the joints. ❖Installing construction joint formwork: Install the construction joint template along the range to be poured on the day (steel template is recommended), and the template should reserve holes with a spacing of 300mm for the insertion of the force transmission rod. The elevation of the top surface of the template should be controlled within +0mm and -2mm to avoid large deviations in the flatness of the joints of different bins. ❖Laser transmitter installation: It is planned to be installed on the column. The specific location should be set at a better location according to the amount of paving on the day. If it cannot be installed on the column, it should be installed on a special tripod. ❖In order to ensure the quality of concrete floor paving, each group needs to arrange 10 to 12 workers to cooperate to flatten the surface of the concrete spread on the ground so that the pile is slightly higher than the design elevation (about 20 to 30mm). At the same time, for the parts near the wall, exposed pipelines and the surrounding of the formwork, two workers are arranged to manually smooth the concrete material about 20~30cm away from the wall (formwork) (using a 2m scraper with an iron trowel). The workers responsible for smoothing the edges must be trained and skilled plasterers. These workers must obey the command and follow the arrangement to ensure the quality of construction. ❖ Since the thickness of the concrete reaches 200mm, and because of the installation of steel mesh, in order to ensure the compaction of the concrete, this project needs to arrange a vibrating rod to cooperate with the vibration. At the same time, in order to ensure that the protective layer of the steel mesh reaches the design requirement of thickness (70mm), it is necessary to arrange for manual lifting of the steel mesh and pad the support block in the range to be paved in advance. ❖ The width of the concrete material paved on the platform each time is required to be no more than 5m, and the length is based on the formwork boundary. The construction direction is from left to right (along the short side direction) and from front to back (along the long side direction). The recommended daily paving volume is 1200~1500㎡. Calculated based on 12 hours of working time per day, the feed rate is required to be 30 to 40m³. ❖Others: To ensure the flatness of the ground, special attention should be paid during the construction of the laser leveling machine: the slump of the concrete delivered to the platform each time must be consistent; the concrete feed rate must reach 40m. per hour or more, and the initial setting time of each batch of concrete must be consistent; the template elevation must be accurate and cannot be disturbed during construction; environmental coordination. The newly constructed concrete floor cannot be exposed to sunlight, wind, rain and other environments that are unfavorable to the curing of concrete. Special reminder: In order to make the laser leveling machine give full play to its inherent functions and ensure the construction quality and efficiency of the concrete floor, in addition to mastering the above-mentioned construction coordination precautions, there are many details that need to be paid attention to. Please look forward to the subsequent updates and sharing of this site.

Any road construction machinery will inevitably be affected by external environmental factors, and this is no exception for laser levelers, especially in the hot and rainy summer. Once the laser leveler is exposed to too much rain, it is very likely to cause a series of problems such as rust on the leveler body and damage to parts. In order to avoid unnecessary maintenance costs and extend the service life of the leveler, it is particularly necessary to do a good job of laser leveling maintenance in the rainy season. Below, our company will combine its own years of work experience to make several suggestions on how to do a good job of protecting the leveler in the rainy season. First, before parking the laser leveler, you should use your naked eyes to observe and judge whether the surrounding geographical environment is safe, stay away from rivers or hillsides that may cause landslides. Under a big tree is not a good parking place. It is easy to be struck by lightning in thunderstorms, and if a big tree is blown down on the laser leveler in windy weather, it will also cause great losses. Choose a place with a solid road surface to park. It is good to be able to park on cement or asphalt, but our leveling machine usually rarely has cement roads. Most of them are operated in the field. In this case, you should choose to park on a stable ground for a long time, and try to avoid parking on the fill ground. Second, if necessary, you need to install anti-skid chains on the laser leveler to increase the safety factor. The installation of anti-skid chains should be carried out in advance. Do not start installing them in an emergency environment. Such hasty installation is unsafe and troublesome. If it is a special case, safety warning signs must be placed before and after the laser leveler. Do not install anti-skid chains when the tire pressure is insufficient. Also pay attention to the different sizes of anti-skid chains. Choose anti-skid chains that match the size of the wheel hub and wheel width. After installing the anti-skid chain, pay attention to the driving speed of the roller should not be too fast, and also pay attention to avoid sudden acceleration or deceleration to cause damage to the anti-skid chain. Third, if conditions permit, you can park in the garage, and try to avoid parking in an overly humid environment and choose indoor storage. The rust prevention of laser leveling machines is very important. If the machine is parked for a long time, it should be started and driven once a month to charge the battery. After the machine is stored for a long time, the grease on the piston rod should be wiped dry and all parts should be filled with grease. When the machine is parked, the working device should be kept dry and clean, and water should not be put in to avoid rust and make the machine inconvenient to operate. In fact, in addition to the above aspects, there are many details that need to be paid attention to during the construction of the laser leveling machine in the rainy season. This site will continue to pay attention to, organize and share related content. Interested users can directly visit the official website of this site to inquire and obtain it. I believe it will be helpful for your future use.

No matter what kind of mechanical equipment, if you want to effectively extend its service life, it is necessary to regularly do the maintenance and maintenance of the equipment, which is no exception for the laser leveling machine. In view of the lack of detailed analysis of the maintenance standards and specifications of the laser levelling machine in the relevant technical data, our company will combine many years of work experience to make a simple summary of the correct maintenance methods of the various components of the laser levelling machine, and hope that the majority of users must operate scientifically according to this specification. ► Engine maintenance: Choose an antifreeze suitable for the local temperature and replace it every 1 year. Before the winter, the winter fuel should be replaced with a laser leveller in advance to avoid waxing of ordinary diesel in the filter and pipeline due to low temperature. As a result, the engine could not start normally, the anti-icing device of the compressed air system was opened, and the ether level was checked regularly. Many engines require some additive to be added to the coolant, namely SCA (Supply coolant Additive), which usually acts on aluminum. During the part's contact with the coolant, metal corrosion, mineral precipitation, cavitation and cylinder liner foaming are more effectively prevented. ► Parts maintenance: Before parking the laser leveler for a long time in winter, mechanical articulation point, lubrication and maintenance work should be carried out on the bearing. Check the integrity of the dust jacket of the concrete laser leveling machine, and replace the damaged sealing ring in time. The metal contact surface exposed to the air should be rust-proof, the engine should be started regularly, and all reduction gear boxes should be operated to prevent the shaft seal and rubber seal ring in the gear box from damaging the parking and gear oil for a long time. ► Hydraulic system maintenance: Regularly start the laser levelling machine and turn on all hydraulic functions on the machine, so that the hydraulic drive components work regularly, prevent the relevant seals from being damaged due to long-term parking, metal parts such as cylinder rods and other rust, as much as possible. Retract all cylinder rods into the hydraulic cylinder oil chamber to better protect the cylinder rod surface. ► Electrical system maintenance: Please start the laser leveling machine engine every two months, charge the battery, and run all hydraulic actuators, such as rotary hydraulic motor, telescopic cylinder, etc., do not remove the battery from the machine to prevent long-term parking equipment to control the internal software program failure loss. Special reminder: once the operation, maintenance and management of the laser levelling machine is improper, it will affect the efficiency and life of the equipment, etc., and may even cause equipment failure, resulting in equipment downtime, therefore, only by doing the daily maintenance and management of the system and the whole machine can effectively reduce the probability of equipment failure, ensure the normal operation of the equipment, and improve production efficiency.

In recent years, with the continuous development of the economy and society, the construction demand of large areas such as parking lots, large squares, industrial plants is also increasing, because these sites mainly use concrete to pour the foundation, and then cover the floor tile or floor paint, so higher requirements are put forward for the flatness of the base layer. In order to ensure that the ground flatness after construction reaches an ideal level, it is necessary to use a concrete laser levelling machine. So, what is the difference between the construction of concrete laser levelling machine and manual construction? What are the significant construction advantages of the concrete laser leveling machine itself? █ Traditional construction method The common concrete floor construction method is to manually level, and then use a polishing machine to wipe. This method requires a lot of labor, the quality of the construction process is not controlled, the need for manual correction many times, repeated measurement and adjustment of the ground under construction, and the efficiency is not high. A large area of concrete floor construction needs to use a large number of wood or metal plates to form the side formwork in advance, and measure the height of the side formwork by the level to control the height of the concrete after laying. Due to the need to use the level for multi-point measurement, the side template must be retested after laying to ensure accuracy. Therefore, the process is prone to human error. In addition, the removal of the side template also requires a lot of labor. █ Intelligent construction method 1. Operation principle The Topcon laser transmitter is set up in advance on the construction site to provide the reference surface of the working elevation. The Topcon receiver LS-B110 fixed on the laser leveler receives the laser elevation position signal and transmits the real-time elevation position signal to the controller, which automatically controls the electric push rod or hydraulic system of the concrete laser leveler. Ensure that the receiver's elevation is at the same level as the reference plane, and the leveling machine mechanism can be spread according to the set height. 2. Construction advantages The advantages of using concrete laser leveling machine for concrete leveling are highlighted in the following aspects: (1) It is easy to lay high-strength concrete, low-slump concrete and fiber mud condensate; (2) The construction quality is high, the leveling quality of the laser leveling machine is more than 3 times higher than that of the traditional manual construction method, and the ground is super flat; (3) Improve work efficiency and save about labor. The use of concrete laser levelling machine construction, shorten the construction time, improve work efficiency, and can save labor; (4) The heavy manual labor is changed into mechanical paving, vibrating, leveling, pulp lifting, and plastering, so that the operator is reduced, and the labor intensity is reduced to create high-quality ground; (5) The application of concrete laser levelling machine, not only than the traditional manual process to save costs, and less ground joint, later maintenance costs are greatly reduced, so that the economic benefits are significantly improved; (6) The use of concrete laser levelling machine can achieve large area construction, reduce a large number of construction joints, concrete collapse can be reduced, concrete strength is guaranteed, so that the ground integrity is good, not easy to crack. Summary of this chapter: Although the concrete laser levelling machine is an emerging new equipment with excellent technology in recent years, it is widely used in airport runways, high-speed rail platforms, large workshop pavements and other projects with high requirements for ground smoothness. If it can be widely popularized and promoted, it will bring very considerable construction benefits.

Even the best laser levelers will likely age or even become scrapped as they age or are used more and more, or due to improper maintenance, untimely after-sales service from the manufacturer, and other factors. Faced with such machines, many construction units usually abandon them, not knowing that many manufacturers have launched activities such as "recycling old machines at high prices and exchanging old for new". For scrapped laser levelers, customers can participate in the above activities in the following ways. ● Sell the idle laser levelers directly, and the manufacturers will recycle them at a high price For the idle and aging scrapped laser levelers in your hands, it may be due to the large amount of engineering, long service life, old software system, or replacement with a newer or larger laser leveler, or the transformation of the industry and no longer direct concrete paving construction, and no longer intend to reuse the original idle laser levelers. As long as the laser system is intact, it can be sold directly to manufacturers with "old for new" activities. They will definitely conduct professional evaluation of your equipment and help you realize cash. ● Repair and refurbish the laser leveler in your hands, and the manufacturer provides you with remanufacturing services At the end of the year, many construction units will sort out the construction equipment in their hands after they are idle, in preparation for the construction next year. They hope to reuse the idle and aging laser levelers in their hands, but they often do not have professional skills and cannot repair them. The cost of purchasing a new machine is too high. At this time, you can contact the manufacturer of "old machine recycling at a high price" to remanufacture your laser leveler. In addition to solving the problems of your current equipment and replacing damaged parts, you can also use your own technical advantages to upgrade and transform your equipment software system to "turn waste into treasure". ● Replace the scrapped equipment in your hands with a new machine, and the manufacturer provides "old for new" service As a precision equipment, some friends ignored the after-sales service, brand technology, product quality and other factors when they bought the laser leveler. They often bought low-quality products without after-sales service because they only wanted to be "cheap" for a while. Although there are concrete paving projects in hand, they cannot be used normally due to problems with the equipment or the manufacturer has not provided systematic and professional training to the operator. I want to buy a product with higher intelligence, guaranteed service and excellent quality, but due to financial pressure, I can't buy it for the time being. In order to meet the needs of such friends, we carry out the "old for new" service, conduct replacement evaluation, and replace the new intelligent laser leveling machine after making up the price difference. After the laser leveling machine has been used for a long time, it will inevitably be idle or scrapped, but as long as we handle it reasonably, we can successfully turn waste into treasure and obtain unexpected benefits. Therefore, if the laser leveling machine in your hand has become old or scrapped, do not discard it at will. You can contact the manufacturer with recycling activities to let the equipment "turn waste into treasure".

Fuel consumption can be said to be a point of particular concern to most laser leveling machine users. Since the leveling machine is used very frequently during the construction stage, the fuel consumption will continue to increase accordingly. In the long run, the overall cost of using the laser leveling machine will inevitably rise sharply, so it will be difficult to obtain ideal economic benefits. In fact, fuel consumption can be reduced in the process of using the laser leveling machine, of course, the premise is that the correct operation method needs to be mastered. ❥ Reduce unnecessary idling: If you want to save fuel, you need to reduce the necessary idling of the engine. It should be clear that when the laser leveling machine is idling, it is also using the hydraulic pump to circulate the hydraulic oil. The longer the idling time, the more fuel is wasted. The correct way to save fuel is to try not to idle the laser leveling machine when standing by and resting. This is one of the secrets to saving fuel. ❥ Master the correct operation: If you want to reduce unnecessary operations that increase fuel consumption in the laser leveling machine, the premise is that you must first be familiar with the basic operations of the leveling machine and master the correct operations of loading, walking, rotation, leveling, slope repair and other operations. Who should be blamed for the fuel consumption of the leveling machine if the foundation is not good? I would like to remind the newcomers who have just entered the industry to listen to the advice of the old drivers and learn the leveling operation well. ❥ Reduce the engine speed: When performing the same excavation operation, when the engine is at a higher speed, the laser leveling machine operates faster, but consumes more fuel; when operating at non-full throttle, appropriately reduce the engine speed. Although the operating speed is reduced, it can reduce fuel consumption and improve fuel efficiency. ❥ Walking at non-full throttle: The laser leveling machine should be walked at non-full throttle of the engine. Everyone should know that the higher the engine speed, the faster the walking speed and the higher the fuel consumption. Reducing the engine speed during operation can improve the fuel consumption efficiency during walking. ❥ Try not to do invalid actions: If you want to save fuel, you must also pay attention to minimizing the invalid actions of the laser leveling machine. Invalid actions can only waste more fuel in vain. Operate according to the specific conditions of the construction work to avoid unnecessary rotation. ❥Reduce the rotation angle: Try to reduce the rotation angle. If the rotation angle is small, it can shorten the operation cycle, increase the amount of work per unit time, and thus improve fuel efficiency. Then place the laser leveler closer to the operation. As a user of the laser leveler, using scientific methods to reduce fuel consumption can not only save the cost of use, but also help to extend the service life of the leveler. In order to make the laser leveler work better for us, we hope that everyone will refer to the above content to develop a simple and effective leveler consumption reduction strategy.

As a new floor construction equipment, laser leveling machine has attracted wide attention from the industry due to its excellent construction efficiency and construction accuracy as soon as it entered the market, and has been increasingly used in large-scale concrete floor construction in warehouses, basements, parking lots, industrial plants, etc. Like other construction machinery, laser leveling machine is also a whole composed of many parts, and the construction environment is relatively complex, so it is easier to wear than general mechanical parts during long-term work. In order to extend the effective service life of the laser leveling machine, the following is a brief introduction to the main components of its parts and the tips for use and maintenance. —-Core components and functions of laser leveling machine—- ➤Transmission system: mainly composed of transmission, universal joint, transmission shaft and drive axle; ➤Travel system: composed of frame/axle/suspension/wheels, etc. The function is to support the quality of the whole vehicle and ensure the driving of the laser leveler; ➤ Steering system: It is composed of steering wheel, steering gear, steering knuckle, steering knuckle arm, tie rod, straight tie rod, etc., and its function is steering; ➤ Hydraulic brake: The hydraulic brake device is composed of brake pedal, master brake cylinder, slave cylinder, drum brake and oil pipe and other parts; ➤ Transmission: It is composed of transmission case, transmission cover, first shaft, second shaft, intermediate shaft, reverse shaft, gear, bearing, operating mechanism and other parts, which are used for laser leveler speed change and output torque change; ➤ Leaf spring and shock absorber: The function of leaf spring is to maintain elastic connection between frame and body and wheels or axles. The function of shock absorber is to ease vibration when laser leveler is subjected to vibration shock; ➤ Starter: Its function is to convert electrical energy into mechanical energy, drive crankshaft rotation, and start engine. If the continuous starting time is too long, the battery will be discharged in large quantities and the starter coil will overheat and smoke, which will easily damage the laser leveling machine parts; ➤Battery: The function of the battery is to supply electricity to the starter, and to supply power to the engine ignition system and other electrical equipment when the engine is started or running at low speed. When the engine is running at high speed, the generator generates sufficient electricity, and the battery can store excess electricity; ➤Motor: The motor is the power device of the laser leveling machine. Its main function is to generate driving torque as a power source for electrical appliances or various machines. Its main function is to convert mechanical energy into electrical energy. At present, it is more commonly used to use heat energy, water energy, etc. to drive the generator rotor to generate electricity. —-Use and maintenance of core parts of laser leveling machine—- ➤Regularly replace lubricating oil to ensure that all parts of the machine are well lubricated and reduce the wear of parts; ➤Keep the whole machine and parts clean regularly, and tighten loose parts in time to prevent loose parts from aggravating the wear of parts or causing the loss of parts; ➤Pay attention to the workload of each part during the running-in period. The workload during the running-in period should generally not exceed 80% of the rated workload, and deploy appropriate workload to prevent overheating caused by long-term continuous operation of the laser leveling machine; ➤Start the leveling machine engine once every half a month to charge the battery and run all hydraulic actuators, such as rotating hydraulic motors, telescopic cylinders, etc. Do not remove the battery from the machine to prevent the failure of the controller's internal software program being lost due to long-term parking of the equipment; ➤Start the leveling machine regularly and turn on all hydraulic functions on the machine to allow the hydraulic drive components to work regularly to prevent the relevant seals from being damaged due to long-term parking, and metal components such as cylinder rods from rusting. Try to retract all cylinder rods into the hydraulic cylinder oil chamber as much as possible to better protect the surface of the cylinder rod. Reasonable use and regular maintenance of various components are effective ways to extend the service life of the laser leveling machine and improve the economic benefits of the operation. It is recommended that before using the leveling machine, you should be fully familiar with the composition and functions of each component of the machine, master the correct operation method, and strengthen daily maintenance.

As construction units continue to increase their requirements for the color, appearance, and flatness of large-area concrete floors, the problems of traditional construction processes in terms of construction progress and quality are becoming increasingly prominent. The use of concrete laser leveling machines for one-time floor forming construction has far greater advantages in terms of process, technology, and cost than the former. In order to effectively improve the operating efficiency of concrete laser leveling machines, this article briefly summarizes some methods and techniques from the perspective of purchase and maintenance, hoping to help everyone's future use. ✪ How to judge whether the quality of a laser leveling machine is good? 1. Look at the effect. High-quality laser leveling machines have more stable effects. 2. Look at the speed. High-quality laser leveling machines have faster leveling speeds. 3. Look at the accuracy. High-quality concrete laser leveling machines have higher leveling accuracy. 4. Look at the model. The selection of a suitable laser leveling machine is mainly based on the construction site and area. 5. Look at the manufacturer. The technical strength of the manufacturer of concrete laser leveling machines directly affects the quality of the equipment. 6. Look at safety. When selecting a laser leveling machine, the braking performance and operational safety of the concrete laser leveling machine must also be fully considered. ✪✪How to judge whether the laser leveling machine is a new equipment? 1. Check whether there is noise during operation. Hold the inner sleeve of the bearing body of the concrete laser leveling machine with your left hand, and turn the outer sleeve with your right hand to make it rotate, and listen to whether there is noise during the operation of the bearing. Since most counterfeit products are produced under backward conditions and are completely operated in a manual workshop, it is inevitable that impurities such as dust and sand will be mixed into the bearing body during the production process, so there will be noise or unsmooth operation when the bearing rotates. 2. Check whether there is oil stain on the surface. This should be paid special attention to when purchasing. Since the current anti-rust technology is still a little behind that of foreign manufacturers, many manufacturers are prone to leave thick oil stains when anti-rusting concrete laser leveling machines, and there will always be a sticky touch when directly touching them with your hands. 3. Check whether the printing on the parts is clear. The bearing products of each laser leveling machine are usually printed with their words, numbers, etc. The counterfeit fonts are not only blurred, but also float on the surface due to the rough printing technology. Some can even be easily wiped off by hand or have serious manual traces. 4. Check whether the outer packaging is clear. Generally speaking, the concrete laser leveling machines produced by regular manufacturers have their own dedicated designers to design the outer packaging, so the whole machine packaging should be very clear from lines to color blocks. ✪✪✪How to judge whether the laser leveling machine needs overhaul? Due to the great differences in the operating conditions and maintenance levels of different concrete laser leveling machines, it is difficult to determine the reasonable overhaul time based on the service life and working time alone. According to many practical results, we recommend that the laser leveling machine generally needs an overhaul after working for 4000-6000 hours. Machinery that needs overhaul usually has the following symptoms: 1. The pipelines and sealing components of the hydraulic system are aging and the oil leakage is serious. 2. The circuits of the electronic control system are aging, the control accuracy is reduced, and the failure rate is high. 3. The engine power is significantly reduced, and symptoms such as blowby, burning oil, and difficulty in starting appear. 4. The concrete laser leveling machine has been working for about 5000 hours, but its transfer case, transmission, and reducer have never been repaired; 5. The hydraulic power of the leveling machine has decreased, which is generally manifested as insufficient walking power or material distribution power. Specifically, it is basically normal for small load operations, barely able to operate with medium loads, but unable to operate with large loads. Warm reminder: Choosing the right model and ensuring the performance of the machine are important prerequisites for the safe use of the concrete laser leveling machine, and learning maintenance skills is a necessary requirement to maintain the good operation of the laser leveling machine and extend the service life of the machine, so both aspects need to be given enough attention.

The application of concrete laser levelling machine undoubtedly improves the efficiency of construction, realizes the saving of labor costs, and improves the economic benefits of engineering construction, but with the gradual maturity of the levelling machine technology, the types and models of the machines sold on the market are also increasing, however, only the suitable machine can play a multiplier effect with half the effort in construction. In order to help the majority of users to find a really professional and focused good brand good products, today we will talk about the purchase of concrete laser leveling machine a few points for attention. —- From the manufacturer's point of view —- « Do not choose low-price products to investigate the comprehensive strength » Consumers for a business, the purchase of trust is a comprehensive consideration. Price may account for 25 percent of that, but at the end of the day, what consumers value is a combination of factors. In today's increasingly rational consumption habits, low prices can only become a gimmick to attract consumers' attention, and the real measure of a company's success or failure is a sign of the company's product quality, after-sales service and its own strong strength. In the current shuffle trend of the concrete laser leveling machine industry is becoming more and more obvious, the terminal is not enough, the network is not perfect, the brand is not well-known enough enterprises, will face greater pressure. « Choose the leveler carefully choose the just starting brand » For this high-tech product of concrete laser levelling machine, in addition to technological innovation, there is another important factor that affects the quality, that is, experience. How to define the different models and specifications of laser leveling machine products? How to deal with the ground smoothness? Problems such as how to locate the laser transmitter require years of long-term accumulation in order to accurately grasp. When the user chooses the concrete laser leveling machine product, if he hastily buys the products of the entry-level brand, he is likely to become a "guinea pig" and encounter all kinds of trouble. To identify if a brand is new or not is as simple as looking at the time of its patent registration and looking at real cases in the past. —- —- From a product perspective « To clarify the difference between different models of products » Take two-wheel and four-wheel concrete laser levelling machine as an example: The construction flexibility of the two-wheel laser leveling machine is strong, and it is more suitable for the construction of castin floor, underground garage and some terrain or relatively complex working environment. The weight of the two-wheel machine is generally about 300kg, the leveling thickness is between 50-245cm, the operation is hand-pushed, the equipment has a high mobile efficiency, on the basis of achieving the ground flatness, it can also improve the efficiency of the work to a great extent, if the budget is less, the purchase of this model is more economical, about 2000 square meters per day can be easily done. It is a rare laser leveling equipment. The construction range of the four-wheel laser leveling machine is also very wide, which saves labor compared with the two wheels, and the equipment has built-in hydraulic drive, which effectively avoids the phenomenon of slipping during the construction process. Whether it is a large warehouse or multi-storey building can use four-wheel laser leveling machine to level the ground, the four-wheel weight is generally about 900 kg, the leveling thickness is between 60-300cm, the operation is a driving type, relatively easy to operate the two-wheel operator, the use effect of the equipment is comparable to many large leveling machines, and it is also a very cost-effective laser leveling equipment. In summary, the choice of the use of concrete laser levelling machine need to focus on two aspects of the problem, one is the performance and scope of application of the product itself, the second is the comprehensive strength of the manufacturer and brand trust, etc., no matter which aspect, consumers should give enough attention, do enough homework, so as to avoid economic losses caused by wrong selection and wrong use.

with the continuous improvement of the requirements of modern industrial plants for concrete floor flatness, Traditional Floor Leveling Construction Methods Can Not Fully Meet The Requirements Of Quality, Construction Period And Other Aspects, Therefore, The Introduction Of High-tech Laser Leveling Machine For Large-scale Floor Paving, Compaction, Leveling Is The Inevitable Trend Of The Present. Compared With The Traditional Construction Method Of Guideway Leveling Beam, The Application Of Laser Leveling Machine Can Not Only Effectively Solve The Problems Of Ground Hollow Drum And Cracking, But Also Help To Reduce Costs And Speed Up The Construction Progress. The Following Laser Leveling Machine Manufacturers On A Large Area Of Floor Construction Technology To Make A Simple Discussion. ☾ Construction site arrangement and management ☽ : In order to better complete the construction of a large area of the floor, it is necessary to organize and manage the construction site of a large area of the floor in all aspects, and fundamentally avoid the construction situation of misoperation when using the laser leveling machine construction technology. In the process of organizing and managing a large area of the floor construction site, the manufacturer of the laser leveling machine proposes to achieve it through the following aspects: 1. Remove obstacles at the construction site. In the actual construction process, it is necessary to remove all obstacles in the construction area, such as ditches, garbage, communication lines, etc., and migrate high-voltage lines or communication lines after being allowed by relevant departments. If obstacles that cannot be moved or removed are encountered, they need to be adjusted or avoided in time. 2. Measurement for the construction site. Before large-scale floor construction, it is necessary to measure and test each control point according to the requirements of the construction and the owner. After determining each coordinate point and elevation point, it is necessary to measure the horizontal point and plane control point to ensure that the construction parameters can fully comply with the construction design. ☾ Large area floor treatment work ☽ : When the formwork is fixed, it is necessary to use steel bars to fix it, and set the cement mortar pad to ensure that the formwork does not shift during the concrete pouring process and the thickness of the protective layer meets the requirements. Before large-scale floor concrete pouring, the concrete surface on both sides should be chiseled, the steel bar should be removed and the position should be corrected, and the garbage should be cleaned. Under normal circumstances, the floor and the casting belt adopt an independent support system that is supported separately from the bottom formwork, which can effectively control the floor compared with the whole formwork, because the deflection caused by mold removal increases, and because no secondary formwork is required, manual use is reduced, which has good economic benefits. The pouring time of the expansion post pouring belt is generally carried out 60d after the completion of the concrete pouring in the adjacent parts, and watering and wetting treatment should be done 24h in advance before construction. The concrete used is micro-expansive concrete with a strength grade higher than the corresponding structural position to prevent cracks. In the process of construction, the laser leveler manufacturer recommends the use of C35 concrete mixed with 12%SY-G. After the completion of concrete pouring, the construction site should be covered with moisturizing curing treatment within 12h, and the curing time should not be less than 28d. Watering net is strictly prohibited when the average temperature of the day is below 5℃. ☾ Concrete paving work ☽ : When the large-scale floor concrete paving work, many factors such as the position of the formwork and the supporting condition should be strictly checked. When the concrete is dumped after the inspection, it should be carried out according to the guidance of the professional of the laser leveling machine manufacturer to ensure that the concrete is dumped to the specified position. If there is any fault in the large-area floor paving, it is necessary to immediately suspend the construction for more than 1 hour. For example, when the mixing material cannot be vibrated, it is necessary to install construction joints on the floor after the completion of the floor paving, and discard the mixing material that cannot be vibrated. When the plug-in vibrator vibrates the mixture, it is necessary to lift the pulp and scrape it with a laser leveler. Two vibrators should be installed on the vibrator in a large area of the floor, so as to form a transverse vibratory group on the ground and carry out continuous vibratory work along the cross section. In the vibration work, it is necessary to pay attention to the position of the bottom of the board on the ground, and the problem of under-vibration or missing vibration must not occur in the position of the interior and corners. The vibration time is about 30 seconds, and the relevant personnel should supplement the material beside the vibration real-time, and strictly supervise and manage the tension rod and effect of the template transmission rod of the vibration. When deformation, leakage displacement and loosening occur, it should be corrected immediately. The above three aspects of the construction site management, floor treatment, paving of large area floor leveling construction technology are discussed in detail. In order to effectively improve the quality and efficiency of floor construction, laser leveling machine manufacturers suggest that: in the actual construction process, the operator also needs to fully grasp the characteristics of the leveling machine, and combine it with the construction, so as to achieve a more ideal construction standard.

With the increasing number of warehouse and large production workshop construction projects, the existing conventional construction technology can no longer meet their needs for the flatness and quality of concrete floors. In this situation, laser leveling technology has been successfully introduced. The use of laser leveling machines for construction can not only effectively reduce the occurrence of ground cracking, damage, sanding, etc., but also has a high level of construction automation, fast construction speed, and low construction cost. The economic benefits brought by the cast-in-place floor construction of industrial plants are very considerable. The following is a brief introduction to the specific application of laser leveling machines in the construction of cast-in-place floor slabs of industrial plants. —- Working principle of laser leveling machine Laser leveling consists of four parts: laser transmitter, data processing system, laser receiver, and leveling power system. The laser transmitter rotates continuously at a speed of 600r/min to form a horizontal laser plane in space. After receiving the laser signal, the laser receiver on the laser leveler transmits the data to the data processing system, and the data processing system then sends a signal to the electric push rod on the laser leveler. The electric push rod executes the command at a speed of 10 times/s, so that the fabric spiral, scraper, and vibrator on the laser leveler can adjust the elevation in real time to ensure the levelness of the floor. —-Technical features of laser leveler ❶ High flatness quality: The flatness of the floor can reach a deviation of less than 2mm within a range of 2m. The floor elevation is automatically controlled by the laser and data processing system, and the leveling system is adjusted in real time through the bidirectional electric push rod to ensure accurate leveling. ❷ Good integrity of the floor: Due to t he independent arrangement of the laser transmitter, large-area casting can be achieved during the construction of the main frame cast-in-place floor slab. Compared with the traditional method, the construction joints are greatly reduced, making the cast-in-place floor structure more integrated. ❸ Good concrete density: Since the laser leveling machine itself has a vibration system with a vibration frequency of 3000 times/min, compared with the traditional inserted vibrator, the density of the floor structure plate can be increased by more than 20%, thereby avoiding the risk of floor cracking caused by uneven vibration. ❹ Significantly improved work efficiency: The laser leveling head scraper, fabric spiral, vibrator and leveling beam of the laser leveling machine integrate the leveling, leveling and vibration work in one go. Compared with traditional construction methods, about 300m of leveling work can be completed per hour, and an average of 3000m can be completed per day, reducing labor by more than 30%, and the work efficiency can be increased by about 3 times. —-Cast-in-place floor laser leveling construction technology ❶ Construction preparation: First divide the construction section, and after the template support and steel bars of the pouring construction section are installed and accepted, install and debug the laser leveling machine equipment. The laser transmitter is set up on a special tripod to ensure that the laser emission is not blocked so that the construction area can receive the laser smoothly. The laser transmitter can be set up independently of the main body of the frame to be cast to avoid accidental collision during construction. According to the original leveling point, the fixed reference leveling point on the floor is measured and imported into the laser leveling machine to make the laser transmitter, leveling point, and laser leveling machine correspond. ❷ Casting concrete: Use pumped commercial concrete, and the slump is controlled between 160~180mm. According to the workshop area of ​​each floor of the factory building, it is divided into 8 construction sections for segmented construction. According to the divided construction sections, the columns, beams, and slabs are cast in order from one end to the other. After the column and beam concrete are put into the mold, they are vibrated with an inserted vibrator. The concrete of the casting slab needs to be about 2cm higher than the template to facilitate the laser leveling machine to scrape it flat, and the material reduction or supplementation work can be carried out as needed. To prevent cold joints, the concrete transportation should be as continuous and uniform as possible, and the pauses and intervals in the middle should be minimized. During pouring, the piles of concrete need to be roughly flattened manually, and then the laser leveling machine controls the electric push rod according to the signal of the laser transmitter, and adjusts the horizontal height of the leveling head in real time to ensure that its height is always consistent with the set level point. At the same time, two workers are equipped to level and fill materials at the leveling head to ensure the flatness of the floor, and complete the vibration and compaction work while leveling. ❸ Slurry lifting and finishing: After laser leveling, when the concrete is about 3mm deep when people stand on the concrete surface before and after the initial setting, a disc trowel is used to lift the slurry. The speed of the mechanical trowel should be adjusted appropriately according to the hardening degree of the concrete, and the operation should be carried out in a criss-cross manner. Switch to a blade trowel for polishing, and use manual troweling for corners, column corners and other detailed parts that cannot be polished by the trowel. ❹ Maintenance and finished product protection: After the concrete is finished, water is sprinkled and covered with plastic film to prevent water evaporation and maintain a moist maintenance state. The curing time shall not be less than 7 days, and people are prohibited from stepping on the concrete before the concrete strength reaches 1.2MPa. The above is a brief discussion of the working principle and technical characteristics of the laser leveling machine, as well as a systematic summary of the specific process flow of the lightweight leveling machine used in the construction of cast-in-place floor slabs in industrial plants. By comparing multiple engineering practices, it is found that the effect and economic benefits of using a laser leveling machine for construction are more significant than those of manual construction.