How to carry out effective post-maintenance and maintenance on the emery floor after the construction is completed?

    – Reasonable scraper speed: The scraper speed of the concrete laser leveler has an important influence on the flow and splash of concrete. Too fast speed will cause the concrete to generate a large inertial force under the push of the scraper, which is easy to cause splashing. In general, the scraper speed should be controlled within a suitable range according to the slump of the concrete and the actual situation of the construction site. For example, when the slump is 12-18cm, the forward speed of the scraper can be set at 0.5-1m/s. This speed enables the concrete to move forward smoothly under the action of the scraper and reduce the splashing caused by too fast speed. – Appropriate scraper angle: The scraper angle will also affect the movement state of the concrete. If the scraper angle is too large, the concrete will be lifted excessively, increasing the risk of splashing. Usually, the scraper angle can be fine-tuned according to the thickness and fluidity of the concrete, generally kept between 10-30 degrees. Such an angle can make the concrete evenly spread under the action of the scraper and avoid the concrete being thrown up unnecessarily.   – Vibration frequency and amplitude adjustment: The vibration system of the laser leveler is used to make the concrete more compact, but if the vibration frequency is too high or the amplitude is too large, it will cause the particles inside the concrete to move violently, resulting in splashing. For ordinary concrete construction, the vibration frequency can be set between 50-100Hz and the amplitude between 3-8mm. By appropriately reducing the vibration frequency and amplitude, the splashing phenomenon can be reduced while ensuring the density of the concrete. – Vibration depth control: The vibration depth should be adjusted according to the thickness of the concrete. If the vibration depth is too deep, the concrete near the bottom may surge upward under the action of the vibration force, causing splashing. Generally, the vibration depth is about 2/3 of the concrete thickness. For example, when the concrete thickness is 20cm, the vibration depth can be controlled at about 13-14cm.   – Suitable slump range: The slump of concrete is one of the key factors affecting splashing. If the slump is too large, the concrete will be too fluid and easy to splash under the action of the leveler. Generally, in the construction of laser levelers, the slump should be controlled between 12 and 18 cm. Concrete within this range has good fluidity, which is convenient for leveler operation and can effectively reduce the possibility of splashing. During the concrete mixing process, the amount of water should be strictly controlled according to the mix ratio to ensure that the slump meets the requirements. – On-site slump detection and adjustment: At the construction site, slump detection tools such as slump cones should be equipped. During the concrete pouring process, the slump should be tested regularly, and each truck of concrete should be tested at least once. If the slump is found to be unsatisfactory, it should be adjusted in time. For example, if the slump is too large, some dry materials (such as a mixture of cement and sand) can be added appropriately for adjustment; if the slump is too small, an appropriate amount of water reducer or water can be added for adjustment.   – Selection of suitable admixtures: Adding admixtures to concrete can improve its performance. For reducing splashing, admixtures with thickening effects can be selected. Thickening admixtures can increase the cohesiveness of concrete, making it difficult for concrete to disperse under the operation of the leveling machine, thereby reducing the possibility of splashing. At the same time, pay attention to the dosage of admixtures and add them according to the product instructions and test results to avoid abnormal concrete performance due to excessive admixtures. – Compatibility of admixtures with other materials: Ensure that the admixtures have good compatibility with other concrete materials such as cement, sand, and stone. If the compatibility is not good, it may cause segregation and bleeding of concrete, increasing the risk of splashing. Before using new admixtures, a trial mix test should be carried out to observe the working performance and stability of the concrete.   – Layered pouring: For thicker concrete layers, layered pouring can be used. The thickness of each layer of concrete should not exceed 30-40cm. After each layer of concrete is poured, it is first vibrated with a vibrating rod, and then leveled with a laser leveling machine. This layered construction method can make the concrete better compacted in each layer and reduce splashing caused by the excessive overall thickness of the concrete during the leveling process. – Partition pouring: For large-scale concrete construction sites, they can be divided into several small areas for pouring. Reasonable construction joints are set between each area. This can avoid splashing of concrete under the long-distance push of the leveling machine during large-scale construction. At the same time, partition pouring also facilitates the control of concrete supply and construction progress. – Construction from edge to center: In terms of construction sequence, you can start from the edge of the construction site and gradually move toward the center. In this way, when the leveling machine is working, the concrete has a relatively stable boundary, which can reduce the splashing of concrete to the surrounding area. For example, when constructing the floor of a factory building, first pour and level the concrete along the wall of the factory building, and then construct to the middle area of ​​the factory building. – Avoid repeated leveling: Try to minimize repeated leveling operations on the same area of ​​concrete. Repeated leveling will cause the concrete to be stirred multiple times, increasing the possibility of splashing. During the leveling process, the operator should be proficient in the operation of the leveling machine to ensure that the leveling requirements can be met in one leveling.  

    Before a concrete laser leveling machine that has been idle for a long time is reactivated, a systematic inspection should be carried out to eliminate potential faults (such as component rust, circuit aging, hydraulic jamming, etc.), and the equipment performance should be restored in combination with maintenance to avoid construction quality problems or safety accidents caused by component failure when it is reactivated. The following are the specific inspection and maintenance steps, which are disassembled according to the logic of "appearance → core system → auxiliary components → trial operation" First, inspect thex eterior of the equipment and its easily worn parts, with a focus on checking for physical damage, rust or loosening caused by long-term idleness. This is the foundation for ensuring subsequent system checks. Check whether the frame of the machine body, the leveling scraper and the vibration beam have any deformation or cracks (especially at the welding parts). If there is any slight deformation, it needs to be corrected. If there are cracks, they need to be repaired by welding and ground smooth. Check whether all exposed metal parts (such as bolts, pins, and connecting brackets) are rusted. Rusted areas should be cleaned with a wire brush and then coated with anti-rust oil. Severely rusted parts (such as pins that are stuck) need to be replaced. If it is a wheeled model: Check whether the tire pressure is normal (refer to the standard value in the equipment manual), whether there are cracks, bulges or foreign objects embedded in the tire surface, and whether the valve stems are leaking. If it is a tracked model: Check whether the track plate is excessively worn (the tread depth should be replaced if it is less than 1mm), whether the track tension is appropriate (press the middle section of the track with your hand, and the subsidence should be controlled within 10-15mm), and whether the track pin shaft is stuck (try to rotate it after injecting grease). Check whether the protective covers of the emergency stop button and the operating handle are intact. After the emergency stop button is pressed, it should be able to immediately cut off the power and start normally after resetting. Check whether the warning lights and buzzers are functioning properly (test after power-on), and whether the safety guardrails and anti-slip steps are firm, without any looseness or missing parts.   The core performance of the laser leveling machine machine relies on the power system, hydraulic system and laser control system. It is necessary to check each internal potential hazard one by one to avoid "breaking down" or precision failure when it is put into use. Type Inspection items Maintenance measures Diesel engine 1. Oil level and quality If the engine oil is below the mark, it needs to be replenished (using the same type of engine oil). If it deteriorates (turns black or contains impurities), it should be completely replaced 2. Fuel tank and fuel quality 2. Drain the deteriorated diesel from the fuel tank, clean the tank and then add new diesel. Check if the fuel filter element is clogged (if it is clogged, it needs to be replaced). 3. Coolant level 3. If the coolant is insufficient, it needs to be replenished. (Mix the antifreeze in proportion and avoid adding tap water directly.) 4. Air filter element 4. Remove the air filter element and blow it clean in reverse with compressed air (if the filter element is damaged, it needs to be replaced). 5. Spark plugs/fuel injectors 5. Remove the spark plugs to clean the carbon deposits (if the gap is abnormal, adjust it). The fuel injectors need to be disassembled to check the atomization effect (if the atomization is poor, clean it). Electric motor 1. Motor housing and terminal blocks Clean the dust off the motor casing and check if the terminal blocks are loose or oxidized (oxidation should be sanded with sandpaper). 2. Carbon brushes (if any) When the carbon brush is worn down to one-third, it needs to be replaced to ensure good contact between the carbon brush and the commutator 3. Insulation resistance 3. Measure the insulation resistance with a megohmmeter. A resistance of ≥0.5MΩ is qualified (to avoid leakage). Long-term idleness of the hydraulic system is prone to deterioration of the oil and aging of the sealing parts, which requires special inspection: Hydraulic oil inspection: Open the oil tank cover and observe the color of the oil (normally light yellow. If it turns black or becomes turbid, it needs to be replaced) and the liquid level (it should be within the range of "MIN-MAX" on the oil gauge. If it is insufficient, add the same type of hydraulic oil). If the oil has been idle for more than six months, it is recommended to replace it even if its appearance is normal (the oil will oxidize and become ineffective). Leakage inspection: Check the hydraulic oil pipes, joints, and cylinders (especially the leveling cylinder and traveling cylinder) for any leakage marks. If leakage is found, replace the sealing parts or damaged oil pipes. The joint should be re-tightened according to the manual torque (to avoid over-tightening and damaging the thread). Maintenance of hydraulic components Clean the hydraulic oil filter element (if it is a paper filter element, replace it if it is clogged) to prevent impurities from entering the cylinder and causing wear. Manually push the piston rod of the oil cylinder to check for any jamming (if there is jamming, disassemble the oil cylinder to clean the internal impurities and refill the hydraulic oil). Before starting the equipment, manually rotate the coupling of the hydraulic pump to ensure there is no jamming (to avoid damage to the pump body). The laser system is the "eyes" of the leveling machine. When idle, it is prone to sensor moisture and poor circuit contact, and precise inspection is required Laser emitter Clean the dust off the transmitter lens (wipe it with a soft cloth to avoid scratches), and check the battery power (replace it if insufficient). Power on and test whether the transmitter can emit laser normally (the laser line should be uniform and free of flicker). If the laser is weak or there is no laser at all, check the internal circuit or replace the transmitter. Laser receiver Check whether the receiver probe is damaged or damp (if damp, it needs to be dried), and whether the terminal blocks are loose. Bring the receiver close to the transmitter to test if it can receive signals normally (the indicator light needs to switch normally according to the "high and low positions"). If the signal is unstable, the receiver needs to be calibrated (perform zero point calibration according to the steps in the equipment manual). Control circuit: Check whether the connection lines of the laser control system (from the receiver to the controller, and from the controller to the hydraulic valve) are damaged or aged. The line joints need to be re-plugged and unplugged to ensure good contact (to avoid signal interruption and accuracy deviation).   Apart from the core system, minor issues with auxiliary components may also cause the equipment to fail to operate normally. Each one needs to be confirmed Check the battery level (measure the voltage with a multimeter. For a 12V battery, a voltage of ≥12.4V is normal. If it is insufficient, it needs to be charged; if it has been idle for more than 3 months, it needs to be charged before use to avoid battery depletion and scrapping). Clean the dust inside the distribution box, check whether the fuses are intact (replace the fuses of the same specification if they are blown), and whether the contacts of the relays and contactors are oxidized (if oxidized, sand them with sandpaper). Apply grease to the "lubrication points" marked in the equipment manual (such as walking bearings, scraper connection shafts, and laser receiver rotating shafts) (use lithium-based grease and avoid mixing different types of grease). Each lubrication point should be filled until grease overflows (ensure adequate lubrication). Diesel model: Check whether the fuel pump and fuel line are unobstructed (you can manually pump fuel to remove air), and whether the exhaust pipe is blocked (clean carbon deposits). For electric models: Check if the charger is functioning properly (the indicator light needs to switch normally during charging), and if the cable is damaged (any damage should be repaired with insulating tape to prevent leakage). After completing all inspections and maintenance, it is necessary to conduct a trial run to confirm that the equipment is free of faults and avoid direct construction under load. Start the equipment (engine/motor), let it idle for 5 to 10 minutes, and observe whether the power system is stable (without abnormal noise or vibration) and whether there is any leakage in the hydraulic system. Test each action of the operation handle: walking (forward/backward, turning), lifting and lowering of the leveling scraper, and vibration of the vibrating beam. Ensure that the actions are smooth and without any lag. The laser control system can normally control the leveling height (for example, when the receiver detects the laser offset, the equipment can automatically adjust the height of the scraper). Lay a small amount of concrete (about 10-15cm thick) in an open area, start the equipment for leveling operation, and inspect: Whether the walking speed is uniform (no sudden fast or slow); Whether the vibration frequency of the vibrating beam is normal (no abnormal noise, no obvious honeycomb on the concrete surface); The flatness of the concrete surface after leveling (measured with a 2-meter straightedge, the error should be ≤3mm/2m, meeting the construction standards). During the trial operation, if any abnormality is detected (such as noise, leakage, or accuracy deviation), the machine must be stopped immediately and the fault rechecked.   Refer to the equipment manual: The structure of laser leveling machine machines of different brands may vary. All inspections and maintenance should be based on the parameters in the equipment manual (such as hydraulic oil type, lubrication point position, torque value) to avoid misoperation. Pre-idle record: If conditions permit, a record should be made before the next idle period (such as the time of oil change and the status of components) to facilitate targeted inspection during the next activation. Safety precautions: During inspection and maintenance, the power source must be cut off (remove the key, disconnect the negative terminal of the battery) to prevent accidental start-up. Safety belts must be worn during high-altitude inspections (such as the installation of laser emitters) to prevent falls. Through the above steps, the potential risks of long-term idleness can be comprehensively eliminated, ensuring that the laser leveling machine machine performs stably and meets the precision standards after being reactivated, and avoiding rework or safety accidents caused by equipment failure during construction. Note: The parameters provided in this document are for reference only and are not mandatory. Due to differences in technical characteristics between different brands and models of laser levelers, please consult the manufacturer for a suitable solution before actual operation. This reference document assumes no responsibility for any issues arising from failure to follow the manufacturer's instructions.

  Construction technology and construction process of concrete laser leveling machine ★Introduction to laser leveling machine☆ The concrete laser leveling machine is an advanced ground leveling equipment that uses a laser control system to accurately level the concrete surface. Laser leveling machine combines modern laser technology, mechanical technology and electronic control technology, which can greatly improve the flatness of concrete floors, reduce construction time, and ensure construction quality. ★Preparation work before construction☆ 1. On-site survey: Before construction, a detailed survey of the construction site should be conducted to understand the ground foundation conditions, drainage facilities, surrounding environment, etc., to ensure that the laser leveler can operate smoothly. 2. Material preparation: Prepare sufficient concrete materials and select appropriate concrete proportions according to design requirements. 3. Equipment inspection: Ensure that the laser leveler and other auxiliary equipment (such as concrete pumps, mixer trucks, etc.) are in good condition, and have necessary wearing parts and maintenance tools. 4. Safety protection: Set up construction areas and set up warning signs to ensure the safety of the construction site. ★Key points for concrete laying☆ 1. Foundation treatment: Ensure that the foundation ground is solid, flat, free of oil and water, and lay an isolation layer or moisture-proof layer as needed 2. Concrete pouring: Concrete pouring should be continuous and even to avoid quality problems such as hollows and cracks. 3. Control the water-cement ratio: Strictly control the water-cement ratio of concrete according to design requirements to ensure the strength and durability of concrete. ★Laser leveling machine operation☆ 1. Laser transmitter setting: Set up the laser transmitter in the construction area, and adjust the position and height of the laser transmitter according to the design requirements 2. Equipment positioning: Position the laser leveler within the construction area, and ensure that the laser receiver of the laser leveler can accurately receive the signal from the laser transmitter. 3. Concrete leveling: Start the laser leveling machine and adjust the driving speed and leveling depth of the equipment to make the concrete surface achieve the flatness required by the design. 4. Corner treatment: For corner areas that cannot be covered by the laser leveling machine, hand tools should be used for supplementary leveling. ★Construction quality monitoring☆ 1. Flatness testing: During and after construction, professional flatness testing tools should be used to test the flatness of the concrete floor to ensure that the construction quality meets the design requirements. 2. Strength testing: After the construction is completed, the strength testing of the concrete floor should be carried out at specified intervals to ensure that the concrete reaches the design strength. 3. Quality control records: Keep detailed records of key parameters and quality control measures during the construction process to facilitate subsequent quality tracing and problem handling. ★Later maintenance and care☆ 1. Equipment cleaning: After the construction is completed, the laser leveling machine should be thoroughly cleaned to remove concrete residue and dust on the equipment. 2. Lubrication and maintenance: Regularly lubricate and maintain the key components of the laser leveling machine to ensure smooth operation of the equipment. 3. Equipment inspection: Conduct comprehensive inspections of the laser leveling machine regularly to discover and deal with potential problems in a timely manner. 4. Storage protection: During the storage period of the equipment, necessary protective measures should be taken to prevent the equipment from getting damp, rusty or other damage. ★Safe construction measures☆ 1. Personnel training: Ensure t hat operators have received professional training and have corresponding operating qualifications, and can operate the laser leveling machine skillfully and accurately. 2. Safety protection facilities: Set up necessary safety protection facilities at the construction site, such as guardrails, warning signs, etc., to ensure safety during the construction process 3. Emergency plan: Develop an emergency plan to clarify response measures and rescue procedures in the event of emergencies (such as equipment failure, casualties, etc.). 4. Safety inspection: Conduct regular safety inspections on the construction site to discover and deal with potential safety hazards in a timely manner ★Environmental protection and energy saving considerations☆ 1. Reduce noise pollution: Choose a low-noise laser leveling machine model, and reasonably arrange the operating time during the construction process to reduce the impact on surrounding residents. 2. Reduce waste production: Strictly control the amount of concrete used during the construction process to avoid excessive waste production. The waste materials generated should be classified and processed, and the recyclable materials should be recycled and the non-recyclable materials should be properly disposed of. 3. Energy-saving measures: Optimize the construction process, reasonably arrange operation time, and reduce unnecessary equipment idling and energy consumption. At the same time, the equipment is regularly maintained and maintained to ensure that the equipment is in optimal working condition and improve energy utilization efficiency. 4. Environmental awareness education: Strengthen the environmental awareness education of construction workers and improve their understanding and attention to environmental protection work. Through training and education, construction personnel can understand environmental protection regulations and policies, master environmental protection knowledge and skills, and actively participate in environmental protection work. To sum up, the construction technology and construction process of concrete laser leveling machine need to comprehensively consider many factors, including equipment performance, construction quality, safe construction, environmental protection and energy saving, etc. During the construction process, operations and management should be carried out in strict accordance with relevant standards and requirements to ensure construction quality and safety. At the same time, environmental protection and energy-saving measures should be actively adopted to promote green construction and sustainable development.