In a windy environment, how should the wind protection measures of the laser leveling machine be implemented?

  The following common problems and solutions may be encountered by the laser leveler during construction: – Problem description: During construction, the laser leveler may suddenly lose the laser signal. This may be due to the laser transmitter being blocked, such as the surrounding building materials piled up, the construction workers walking and accidentally blocking the signal transmission path, or the bad weather (such as dense fog, heavy rain, etc.) affecting the propagation of the laser signal. – Solution: First, check whether there are obstacles between the laser transmitter and the receiver. If there are, remove the obstacles to ensure that the signal transmission path is unobstructed. For signal loss caused by weather reasons, in dense fog or heavy rain, construction can be suspended and wait for the weather to improve. If construction cannot be suspended, consider adjusting the position and height of the laser transmitter to minimize the impact of weather on the signal, and at the same time strengthen the sensitivity setting of the signal receiving device (if the device has this function). – Problem description: The laser signal is deviated, resulting in an error between the working plane of the leveler and the design plane. This may be because the laser transmitter is not installed firmly and has a slight displacement; or it may be affected by external forces such as vibration and collision during the construction process, causing the transmitter's emission angle to change. – Solution: Make sure the laser transmitter is installed firmly before construction, and calibrate it after installation. During the construction process, check the position and angle of the laser transmitter regularly. If the signal is found to be inaccurate, use professional calibration tools to recalibrate the horizontality and emission angle of the laser transmitter to make it consistent with the benchmark of the design plane. – Problem description: The ground after leveling is partially uneven. This may be due to uneven wear of the scraper of the leveling machine, or the scraper is subject to greater resistance during the work process, causing the scraper to not work properly. For example, there are hard foreign objects on the ground, such as large pieces of stone, steel bars, etc., which will affect the flatness control of the scraper. – Solution: Check the wear of the scraper regularly, and replace the severely worn scraper in time. Before construction, clean up foreign objects on the ground to ensure that the construction site is flat. If the scraper encounters a large resistance during the construction process, stop the machine immediately for inspection, and continue construction after removing foreign objects. In addition, the leveling effect can be improved by adjusting the walking speed of the leveler and the working pressure of the scraper. Generally, a moderate walking speed and uniform scraper pressure can achieve a better leveling effect. – Problem description: Cracks appear on the concrete surface after leveling. This may be due to unreasonable concrete mix ratio, such as excessive cement dosage, excessive water-cement ratio, etc., which causes excessive shrinkage of concrete during solidification; or improper maintenance of concrete after leveling, such as failure to timely moisturize and maintain in a high temperature and dry environment, causing the concrete surface to lose water too quickly and crack. – Solution: Before construction, strictly control the mix ratio of concrete, and reasonably determine parameters such as cement dosage and water-cement ratio according to engineering requirements and environmental conditions. After leveling, timely maintain the concrete, cover the concrete surface with moisturizing materials such as plastic film or wet cloth, especially in hot and dry weather, increase the frequency and time of maintenance to prevent water loss on the concrete surface. – Problem description: The travel mechanism of the leveler cannot work properly, such as unstable travel speed, uncontrolled travel direction or inability to rotate the travel wheel. This may be caused by travel motor failure, loose or broken transmission chain or belt, or damaged bearing of the travel wheel. – Solution: First check whether the travel motor is working properly, check whether the power cord of the motor is well connected, and whether there is a short circuit or open circuit. For the transmission chain or belt, check its tension. If it is loose, adjust the tensioning device in time; if it is found to be broken, replace a new chain or belt. For the bearing of the travel wheel, check whether it is damaged. If it is damaged, replace the bearing in time to ensure that the travel wheel can rotate normally. – Problem description: The scraper cannot be lifted and lowered normally, affecting the leveling operation of the leveler on concrete of different thicknesses. This may be due to a failure in the scraper lift cylinder, such as damage to the cylinder seal causing oil leakage, which prevents the cylinder from providing lifting power normally; or a problem with the lifting control system, such as a control circuit failure or solenoid valve damage. – Solution: Check whether the scraper lift cylinder is leaking oil. If there is oil leakage, replace the cylinder seal. For the lifting control system, check whether the control circuit is well connected and whether there is any damage. If the solenoid valve is damaged, replace a new solenoid valve to ensure that the scraper lift system can work normally.

  – Tools and methods: Use a 2-meter ruler and a feeler gauge for measurement. Place the 2-meter ruler on the concrete surface so that it fits tightly against the ground, and then use the feeler gauge to measure the maximum gap between the ruler and the ground. For general industrial and civil building floors, the allowable flatness deviation is usually within 4-5 mm; for places with high precision requirements, such as electronic chip production workshops, precision instrument laboratories, etc., the flatness deviation requirement may be within 2-3 mm. If the measured gap is within the specified range, it means that the compaction effect of the trowel meets the quality standards in terms of flatness. – Visual inspection to assist judgment: In addition to tool measurement, it is also important to observe whether the ground has obvious waves, potholes or bulges by naked eyes. Stand at a certain distance (such as 5-10 meters) to observe the overall effect of the ground to see whether the light is reflected evenly on the ground. If the ground reflects light evenly without obvious changes in light and shadow, it usually means that the ground is relatively flat and the compaction effect is good. – Rebound hammer test: Use a rebound hammer to test the concrete surface. The rebound hammer hits the concrete surface and infers the strength of the concrete based on the rebound value, which indirectly reflects the density. During the test, multiple test points should be selected on the concrete surface (generally no less than 3 points per 10 square meters) to calculate the average rebound value. Concrete of different strength grades has a corresponding standard range of rebound values. For example, the rebound value of C30 concrete is generally between 34 and 46. If the rebound value obtained by the test is within the standard range of concrete of the corresponding strength grade, it means that the concrete density is high and the compaction effect of the trowel is good. – Core sampling analysis: In some cases with extremely high quality requirements or disputes, the core sampling method can be used. Use professional core drilling equipment to take out core samples with a diameter of usually 100-150 mm in the concrete structure. Observe the appearance of the core sample, which should be uniform in texture and without obvious pores and stratification. Then send the core sample to the laboratory for compressive strength testing and porosity analysis. The compressive strength meets the design requirements and the porosity is low (generally no more than 5% – 8%, depending on the specific project requirements), indicating that the density of the concrete meets the quality standards and the compaction effect of the trowel machine is qualified. – Visual observation: Carefully observe the trowel traces on the concrete surface. The trowel traces should be uniform and continuous, without obvious depth or interruption. If the trowel traces are uniform, it means that the pressure applied by the trowel machine to the ground during work is uniform and the compaction effect is good. For example, after the construction of a large area of ​​parking lot floor, the trowel traces on the entire floor should show a consistent texture, without local roughness or over-troweled areas. – Touch inspection: Touch the concrete surface with your hand to feel whether its smoothness and hardness are uniform. If the surface feels consistent and there is no local softness or over-hardness, it can also indicate to a certain extent that the compaction effect is uniform and meets the quality standards. – Test block test under the same curing conditions: During the concrete construction process, make test blocks that are cured under the same conditions as the actual construction concrete. At the specified age (such as 7 days, 28 days), the compressive strength of the test block is tested, and the test results are compared with the design strength grade. If the strength of the test block can reach or exceed the design strength according to the expected growth curve, it means that the compaction operation of the trowel machine has no adverse effect on the strength of the concrete, and the compaction effect meets the quality standards. – On-site rebound-core drilling comprehensive method evaluation: Combined with the rebound hammer test and core drilling sampling, the strength of the on-site concrete structure is comprehensively evaluated. The rebound hammer is used to quickly screen out areas that may be insufficient in strength, and then core drilling sampling is performed on these areas for verification. If the overall strength of the on-site concrete meets the design requirements, and the strength distribution in different areas is relatively uniform, it means that the compaction effect of the trowel machine is good and meets the quality standards.

  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.