Standard requirements for the flatness of concrete pavement

  Concrete laser leveling machine is an indispensable and efficient construction equipment in modern construction projects. Its accurate leveling effect greatly improves the construction quality and efficiency. However, in the long-term use of the equipment, it is inevitable to encounter some common problems. This article will focus on several common after-sales problems of concrete laser leveling machine, combined with specific practical content, to provide detailed processing methods and suggestions, aiming to help users better use and maintain the equipment and ensure smooth construction. 1.   Equipment startup failure handling Equipment startup failure is one of the common after-sales problems of concrete laser leveling machine. When the equipment cannot start normally, first check whether the power plug is plugged in and whether the power switch is in the on state. If the power supply is normal, it is necessary to further check whether the motor is damaged or the line is short-circuited. At this time, you can use tools such as a multimeter to troubleshoot. If it is determined that the motor is faulty, you should contact professional after-sales personnel for repair or replacement. At the same time, you should also pay attention to the voltage requirements when the equipment is started to avoid startup failures due to unstable voltage. 2.   Laser system troubleshooting The laser system is the core component of the concrete laser leveling machine, and its stability and accuracy directly affect the leveling effect. The main manifestation of laser system failure is that the laser beam is unstable or cannot be emitted. When dealing with such problems, you should first check whether the laser transmitter is clean and whether there are any obstructions. At the same time, you should also check whether the position of the laser receiver is correct and whether the received signal is stable. If the laser system hardware is intact but there are still problems, you can try to calibrate or reset the laser system. If the problem still cannot be solved, you should contact professional after-sales personnel for inspection and repair. 3.   Hydraulic system maintenance and care The hydraulic system is an important part of the concrete laser leveling machine, responsible for driving the movement of components such as the leveling blade. The maintenance and care of the hydraulic system is essential to ensure the normal operation of the equipment. In daily use, the oil level and quality of the hydraulic oil should be checked regularly to ensure that the oil is clean and free of impurities. At the same time, it is also necessary to check whether the hydraulic oil pipe has oil leakage or damage, and if so, it should be replaced in time. In addition, regular replacement of the hydraulic oil filter and cleaning of the oil tank are also necessary maintenance measures. During use, the equipment should be prevented from overloading for a long time to avoid damage to the hydraulic system. 4.   Leveling effect adjustment method The leveling effect of the concrete laser leveling machine is affected by many factors, including the accuracy of the laser system, the angle and height of the blade, etc. When the leveling effect is not ideal, it can be improved by adjusting the relevant parameters. First, the parameters of the laser system, including the intensity and angle of the laser beam, can be adjusted to ensure that it can accurately reflect the height changes of the ground. Secondly, the angle and height of the blade can be adjusted so that it can better adapt to the ups and downs of the ground. In addition, the walking speed and leveling times of the equipment can be adjusted according to the specific construction requirements to achieve the best leveling effect. 5.   Solution to motor overheating Motor overheating is one of the common faults of concrete laser leveling machines, which may cause equipment performance degradation or even damage. There may be many reasons for motor overheating, such as poor heat dissipation, excessive load or internal motor failure. When the motor is found to be overheated, first stop using the equipment immediately and check whether the cooling system is working properly. If there is no problem with the cooling system, check the load of the equipment to ensure that it is not overloaded. At the same time, it is also necessary to check whether the wiring of the motor is loose or in poor contact to avoid overheating due to excessive current. If the above measures cannot solve the problem, contact professional after-sales personnel for repair or replacement of the motor. 6.   Replacement and purchase of wearing parts During the use of the Wenjie soil laser leveling machine, some wearing parts such as blades and filters will gradually wear or damage and need to be replaced regularly. When purchasing wearing parts, you should choose the brand and model that matches the original equipment to ensure that its performance and quality meet the requirements. At the same time, you should also pay attention to the installation and replacement methods of wearing parts to avoid damage to the equipment or affect the leveling effect due to improper operation. When replacing wearing parts, you should ensure that the power of the equipment is turned off and operate according to the instructions or the guidance of after-sales personnel. 7.   Cleaning and maintenance suggestions for the whole machine Maintaining the cleanliness and good condition of the concrete laser leveling machine is crucial to extending the life of the equipment and improving work efficiency. In daily use, the equipment should be cleaned regularly, including cleaning the dust and dirt on the surface, wiping the mechanical parts and electrical components, etc. At the same time, it is also necessary to pay attention to the regular lubrication of the lubrication parts of the equipment to reduce friction and wear. In addition, when storing the equipment, you should choose a dry and ventilated place to avoid moisture or direct sunlight on the equipment. For equipment that is not used for a long time, it should be started and inspected regularly to ensure that its performance is not affected. In short, the handling of common after-sales problems of concrete laser leveling machines requires comprehensive consideration of the characteristics of the equipment itself and the use environment and other factors. Through in-depth understanding and effective handling of equipment startup failures, laser system failures, wave pressure system maintenance and maintenance alarm adjustment, motor overheating problem resolution, replacement and purchase of wearing parts, and cleaning and maintenance of the entire machine, the stable operation and efficient construction of the concrete laser leveling machine can be ensured. At the same time, users should also strengthen communication and cooperation with professional after-sales personnel so that they can get timely and effective support and help when encountering problems.

    This SOP is designed to ensure equipment performance, extend service life and guarantee operational safety. Standardize the daily cleaning and regular maintenance of the power trowel machine to ensure that the equipment is always in good working condition, reduce the failure rate, eliminate potential safety hazards, optimize the construction quality and extend the service life of the equipment. This program is applicable to the maintenance and servicing of all electric, gasoline or hydraulic-driven power trowels (including driver-operated and hand-guided types) of our company. Operator: Responsible for performing daily cleaning and inspection, and reporting any abnormal conditions. Equipment Administrator/Mechanic: Responsible for conducting regular deep maintenance, repair and record-keeping. Project Manager/Supervisor: Responsible for supervising the implementation of the maintenance plan and providing resource support. Before carrying out any maintenance, make sure that the equipment has been completely turned off, the engine/motor has stopped, the key has been removed, and all moving parts have come to a standstill and cooled down. Wear appropriate personal protective equipment (PPE), such as gloves and safety glasses. Do not clean or maintain the equipment while it is in operation. When handling fuel, engine oil and lubricating oil, keep away from fire sources and do it in a well-ventilated area. Operation process: Cleaning -> Inspection -> Report Remove large debris: Use a scraper or wooden chips to remove large pieces of concrete and mortar adhering to the power trowel plate, the bottom of the blades and the protective cover. Rinse/Wipe Timing: If the concrete has solidified, wipe it with a damp cloth. If the equipment permits and the circuit/air filter is protected, low-pressure water can be used for flushing. However, it is strictly forbidden to directly direct water at key parts such as the engine, motor, bearing housing, and control box. Key areas: power trowel plate, blades, chassis, walking wheels (or tracks). Drying and rust prevention: Use a dry cloth to wipe off water stains on the surface of the equipment. For exposed metal parts (non-friction surfaces), apply a small amount of lubricating oil for rust prevention. Power trowel and blade: Check for excessive wear, cracks or deformation. Make sure the installation bolts are tight and not loose. Transmission system Gearbox/reducer: Check for any oil leakage or abnormal noise. Belt/chain (if any) : Check the tension and wear condition, and adjust or replace them. Engine/Motor Gasoline engine: Check if the air filter is clean and visually inspect the oil dipstick (it should be in a horizontal position). Electric motor: Check if the power cord is damaged and if the plug is intact. Walking mechanism: Check the tire pressure and wear of the walking wheels, or the tightness and wear of the tracks. Fasteners: Quickly check whether the visible bolts and nuts at all parts are loose, especially at the connection points of the power trowel and the fixing points of the handle. Safety: Check whether the emergency shut-off switch and protective cover are in good condition and effective. Fill in the "Daily Inspection Form for Equipment". If any abnormality is detected (such as abnormal noise, oil leakage, severe vibration, inability to start, etc.), immediately hang the "Under Repair" sign and report to the equipment administrator. In addition to the daily content, add: Engine maintenance (gasoline engine) Change the engine oil (refer to the manufacturer's manual. The first maintenance is usually carried out after 20 to 30 hours of operation). Clean or replace the air filter element (more frequently in dusty environments). Check the spark plugs, clean the carbon deposits, adjust the clearance or replace them. Check and clean the fuel filter. Transmission system Gearbox: Check the oil level and replenish or replace the specified gear oil if necessary. Bearings: Apply high-temperature lithium-based grease to the main shaft bearings of the power trowel plate, the bearings of the walking wheels, etc. Comprehensive tightening: Use a torque wrench to re-tighten all key bolts in accordance with the torque values specified by the manufacturer. Electrical system: Check whether all wire connections are firm and clean the dust on the heat sink of the motor housing. Carried out by professional mechanics, it includes all first-level maintenance contents and adds: Deep cleaning and inspection Remove the protective cover and thoroughly clean the accumulated dust and oil stains inside. Check the wear condition of the clutch plates (if any). Deep maintenance of the transmission system Replace all the lubricating oil in the gearbox. Check for wear on the belts/chains and replace them in groups if necessary. Check the clearance and abnormal noise of the bearings, and replace them if necessary. Fuel system (gasoline engine)  Clean the carburetor. Empty and clean the fuel tank (this must be done before long-term storage). Walking mechanism Inspect the wheel axles and steering mechanism, and apply grease. For the driving type power trowel, check the hydraulic oil level and whether there is any leakage in the hydraulic pipeline. Performance test After the maintenance is completed, run the equipment no-load for 10 to 15 minutes to check for any abnormal sounds, vibrations, overheating or oil leakage, and to ensure that each control lever operates flexibly and effectively. Thorough cleaning: As mentioned earlier, thoroughly clean the equipment and dry it. Fuel treatment (gasoline engine) : Drain the fuel from the fuel tank and carburetor, or add fuel stabilizer and run the engine for 5 minutes to fill the stabilizer system. Engine maintenance Change the engine oil. Remove the spark plug, inject about 15 milliliters of engine oil into the cylinder, pull the starting rope several times to distribute the oil, and then reinstall the spark plug. Anti-corrosion treatment: Apply anti-rust oil to all exposed metal surfaces. Apply butter to the smears and leaves to prevent rust. Storage location: Store the equipment in a dry, well-ventilated and flat indoor area. Lower the power trowel plate to the ground to release the pressure of the hydraulic system (if applicable). Lift the tire off the ground or maintain the standard air pressure. After each maintenance, the maintenance date, operating hours, maintenance items, replaced parts and oils, and the signature of the maintenance person must be recorded in detail on the "power trowel Maintenance and Repair Record Card". The record card should be randomly saved for easy tracking of the equipment's history.   Core principles: Prevention first, cleanliness foremost, follow regulations, and keep complete records. Strict maintenance is not only about cost savings, but also an important guarantee for project quality and construction safety.   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.    

Laser leveling machines have high requirements and standards for road surface smoothness. When performing road surface smoothing, the requirements for smoothness are still relatively high. This is because the smoothness of the road surface also plays a big role in the beauty of the environment. Generally speaking, if manual leveling is used, the effect will not be very good. Fortunately, there are laser leveling machines now, and many construction units have also chosen laser leveling machines for road smoothing operations. So laser leveling machines How does it achieve such excellent leveling effect? Laser leveling machines have high requirements and standards for road smoothness 1. Control of the laser leveling machine's baseline: When the leveling machine performs automatic leveling, it needs an accurate reference surface. Generally, when the main focus is to control the height, the tightrope method is suitable; when the main focus is to control the thickness, the floating datum beam method is adopted. Generally, tightrope is used for the bottom layer, and floating datum beam method is used for the middle layer and surface layer. The benchmark wire rope method is to install benchmark wire ropes on both sides of the road, but note: the spacing between the pillars and steel bars supporting the steel wire ropes cannot be too large, generally 5-10m; the steel bars should be 1-2mm higher than the design elevation, and the elevation of the steel bars must be ensured when laying Always accurate during the construction process. 2. Paving speed control of laser leveling machine: The leveling machine should work at a constant speed without stopping, and it is strictly forbidden to be fast and slow. During the leveling process, stoppages should be avoided as much as possible, and the necessary daily stoppages should be placed at the location where the contraction joint is scheduled to be made at one end of the structure. In case of shutdown in the middle, the leveling of the leveling should be locked to prevent it from sinking; when the mixture temperature is above 100°C, the pause time should not exceed 10 minutes. When the pause time exceeds 30 minutes or the mixture temperature is below 100°C, Re-seam according to the method of treating cold seams 3. Laser leveling machine operation control measures: Skill ed laser leveling machine operators should be selected and given pre-job training; during the paving process, the material transport truck should stop 10-30m away from the laser leveling machine and In neutral gear, rely on the laser leveler to push forward slowly, and there should be a dedicated person to direct the unloading truck to unload; ensure the continuity of the work of the leveling machine's feeding system, that is, ensure the height of the material level in the casters (conveyor wheels) Stable, uniform and continuous, the material level height should be kept at 2/3 of the blade above the central axis. Before construction, the leveling must be cleaned. After adjusting the height and cross slope of the leveling, preheat the leveling. The preheating temperature of the leveling should be close to the temperature of the asphalt mixture, which can generally be heated to 85°C-90°C.