How to ensure the construction quality and efficiency of concrete laser leveling machine?

  The maintenance of the five parts of the laser leveling machine is very important    Laser leveling machine is also called laser paver or paving leveling machine. The name is different for each place.  It is mainly a kind of reference plane based on the laser emitted by the transmitter,   which can achieve high-precision and rapid concrete leveling. device of.  While it is convenient to use, we must also remember to maintain it.  The maintenance of the five parts of the laser tanning machine is very important,   namely engine oil level, hydraulic oil level, water pump oil level, engine oil replacement,  and hydraulic oil replacement. Talk about it.     1. Check the oil level of the engine oil: the machine is on a horizontal plane. After stopping the engine for 2-3 minutes,   remove and clean the oil dipstick. The oil level should be at the hole (upper limit) position of the dipstick. 2. Check the hydraulic oil level: put the machine in a horizontal position, stop the engine and open the seat assembly.  Illuminate the hydraulic oil level gauge next to the valve set with a flashlight,  check the oil level from the front panel pane of the machine, and the oil level at 3 is suitable. 3, check the pump oil level: the machine in a horizontal position,  stop the engine. Open the cover of the machine's electrical box and irradiate the oil level window of the water pump with a flashlight to check the oil level.  The lubricating oil should be in the center of the window. 4. Change the engine oil: stop the machine on the slope, with the front high and the back low.  Stop the engine and remove the oil drain wire at the back of the machine to release the oil.  Drain the oil and reinstall the drain wire plug.  Open the engine oil filling cap and readd the recommended oil to the upper limit position of the oil gauge (no oil change filter is about 1.5L;  Oil filter replacement is about 1.7L). Replace the oil gauge and oil filling cap. When the engine is warm,  change the oil quickly and thoroughly. If the oil is seriously contaminated, flush the machine with fresh oil. 5. Replace hydraulic oil: Hydraulic oil should be replaced regularly to prevent damage to hydraulic components.  When the hydraulic oil to the service life, the chemical additives in the hydraulic protection will be reduced,  the efficiency of the hydraulic oil will also be reduced. Therefore, regularly replace as much new oil as possible.  It is also impractical to replace all the hydraulic fluids in the system because the hydraulic fluids in many components of the system cannot be completely replaced.

    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.

    – Site size – Large area construction: If you often need to smooth large areas of concrete sites (such as large industrial plants, warehouses, parking lots, etc.), a ride-on trowel is the best choice. It has high working efficiency, and the operator can sit on the machine to drive, and by controlling the machine's driving speed and the rotation of the trowel disc, it can quickly cover a large area of ​​the ground. For example, for sites with an area of ​​more than thousands of square meters, a ride-on trowel can complete the rough grinding and fine grinding processes in a short time. – Small and medium area construction: For small and medium areas (such as indoor floors of small buildings, family courtyards, etc.), a walk-behind trowel is more suitable. It is flexible to operate, can easily move and turn in a relatively narrow space, and can also smooth corners and edge areas well. Handheld trowels are more suitable for very small areas or local repair work, such as repairing small areas of ground cracks or fine processing of some corners. – Ground flatness requirements – High-requirement ground: If the ground flatness and finish are extremely high, such as high-end shopping malls, hotel lobbies, electronic chip production workshops, etc., a double-disc ride-on trowel is a better choice. The double-disc design can make the ground more evenly pressed, effectively reducing the height difference of the ground. By finely adjusting the height and rotation speed of the trowel disc, the ground can achieve a mirror-like effect. – General requirements for ground: For general outdoor roads, ordinary residential floors, etc., a single-disc walk-behind or ride-on trowel can meet the basic troweling requirements, making the ground flat and smooth without obvious bumps or depressions. – Construction frequency and intensity – Frequent high-intensity construction: If you need to use the trowel frequently and the construction intensity is high (such as a professional construction team), you should choose a trowel with reliable quality and strong power. For example, choose a model with a high-power engine (for gasoline trowels) or a high-torque motor (for electric trowels), and consider the durability of the machine, including factors such as the strength of the body structure and the quality of wearing parts. – Occasional use: If you only occasionally do some small ground troweling work (such as home users), you can choose a relatively low-priced, simple-function walk-behind or handheld trowel to meet basic usage needs.   – Electric trowel – Applicable scenarios: Electric trowels are suitable for use indoors or in places with high noise and environmental requirements. For example, when performing ground construction in indoor environments such as hospitals, schools, and office buildings, the low noise of the electric trowel will not cause interference to surrounding personnel, and there is no exhaust gas emission, which has no effect on indoor air quality. – Advantages and disadvantages: Its advantages are simple operation, easy start and stop, and can be controlled by just the power switch. At the same time, the maintenance of the electric trowel is relatively simple, and it does not need to regularly replace parts such as engine oil and spark plugs like gasoline trowels. However, electric trowels are relatively weak in power, and their working range is limited by the length of the power cord, which may not be convenient for large-scale construction. – Gasoline trowels – Applicable scenarios: Gasoline trowels are suitable for various outdoor construction sites, especially in remote areas without power supply or large open-air construction sites. It is highly maneuverable and can be moved freely without being bound by power cords. – Advantages and disadvantages: The main advantage of gasoline trowels is that they are powerful and can easily handle various types of concrete, including thicker or harder concrete. However, they are noisy and produce exhaust emissions, which have a certain impact on the environment and the health of operators, and their maintenance costs are relatively high.   – Size and number of trowel discs – Size of trowel discs: The larger the size of the trowel disc, the larger the area covered each time, and the higher the work efficiency. Generally speaking, the diameter of the trowel disc of a walk-behind trowel is between 600 and 1000 mm, and the diameter of the trowel disc of a ride-on trowel may reach more than 1000 mm. You can choose the appropriate trowel disc size according to the size of the construction site and actual needs. – Number of trowel discs: Double-disc trowels can provide more uniform pressure when working, making the ground flatter, but the price may be relatively high. Single-disc trowels are relatively cheap and can meet basic needs for some grounds that do not require particularly high flatness. – Speed ​​range – The speed of the trowel has an important impact on the quality and efficiency of troweling. Too high a speed may cause the trowel disc to wear too quickly and cause defects such as wavy lines on the ground; too low a speed will affect the troweling efficiency. The speed of a general trowel is between 70 and 150 rpm, and the speed range of trowels of different brands and models may vary. You need to choose the appropriate speed range based on the specific construction requirements (such as coarse grinding or fine grinding). – Power – The power determines the working capacity of the trowel. For large trowels or when thicker and harder concrete needs to be processed, higher power is required. For example, the power of a ride-on trowel is generally between 5 and 10 horsepower, the power of a walk-behind trowel is generally between 3 and 5 horsepower, and the power of a handheld trowel is relatively low, generally between 1 and 3 horsepower. You can choose the appropriate power according to the intensity of the construction and the type of concrete.   – Supply of consumables: When choosing a trowel, consider the supply of consumables (such as trowel blades, bearings, drive belts, etc.). Choose brands and models that are easy to obtain consumables on the market, so that they can be replaced in time when they are damaged to avoid delaying the construction progress. – Cost of consumables: Compare the prices of consumables of trowels of different brands and models, and try to choose a trowel with a lower cost of consumables. Because consumables may need to be replaced many times during long-term use, a lower cost of consumables can reduce the cost of later use and maintenance. – Machine price and cost-effectiveness: In addition to considering the cost of consumables, the price and cost-effectiveness of the trowel should also be comprehensively evaluated. Don't just look at cheap products, but judge their cost-effectiveness by combining factors such as the performance, quality, and brand of the machine. For example, some high-priced but reliable and high-performance trowels may be more cost-effective from the perspective of long-term use.   – Brand reputation: Choosing a trowel from a well-known brand can guarantee the quality and performance of the product. Well-known brands have stricter standards in product research and development, production processes, quality control, etc., and their products are more reliable. You can learn about the reputation of the brand by checking user reviews, consulting professionals, or consulting industry reports. – After-sales service: Good after-sales service is an important factor in ensuring the normal use of the trowel. After-sales service includes the warranty period of the product, the timeliness and professionalism of the maintenance service, and technical support. When purchasing, you should understand whether the manufacturer provides door-to-door maintenance services, the speed of supply of maintenance parts, and whether there is a professional customer service team to answer questions encountered by users during use.