How to realize automatic operation of concrete laser leveling machine?

The concrete leveling can be said to be an indispensable and important mechanical equipment in road construction. Although it is powerful, the purchase price is relatively high. Therefore, it is necessary to correctly and reasonably select, use and maintain the concrete leveling. , is the key to extending the service life of equipment, reducing operating costs of the entire machine, and improving operating efficiency. Below, our company will combine many years of experience in the use and management of concrete leveling machines to put forward several issues that should be paid attention to during use. We hope that new users will keep them in mind. Before moving the concrete leveling, you should first check the road condition, remove obstacles on the road, keep irrelevant personnel away from the excavator, and then lift the bucket to prepare for starting. Check the direction of the crawler frame, determine the position of the driving wheels, then sound the horn, and the leveling starts walking slowly. When reversing the concrete leveling, you should estimate the space behind the vehicle in advance. If the blind spot is too large, you should ask someone to direct and coordinate from behind. The driver controls the walking speed according to the road conditions. When walking on open flat ground, you can select the "1" gear. The leveler's walking speed will automatically increase or decrease according to the working pressure of the hydraulic walking circuit; when walking up or down a slope, you can select "0" In gear, the leveler travels at low speed and high torque. When the concrete leveling is walking, try to choose a flat road surface to avoid the rotation of the upper turntable. When walking on poor ground, avoid rocks from damaging the walking motor and crawler frame. When the leveling is walking on the slope, try to drive in a straight line; keep the bucket 20-30cm away from the ground. If it encounters slippage and rolling, put down the bucket immediately. If stalling occurs on a slope, lower the bucket to the ground, place the control lever in the neutral position, and then restart the engine. Try to avoid walking in the water with the concrete leveling. If you need to wade, check the water depth and the soft and hard platform level of the bottom in advance. It is not suitable to walk if the underwater mud is too deep or the water surface exceeds the crawler tracks. It should be noted that inspections are also required before starting the engine of the concrete leveling, such as checking the coolant level (adding water), checking whether the air filter is clogged, checking the excavator engine oil level, and checking the hydraulic oil. (add hydraulic oil), check the excavator fuel level (add fuel), check whether the horn is normal, check the lubrication of the bucket, check the water and sediment in the oil-water separator, etc. In short, no matter which type of concrete leveling is used, relevant personnel are required to master the principles and structure of the equipment proficiently before use, and try their best to do all aspects of work during the operation. Of course, during maintenance It is also necessary to achieve careful observation, comprehensive analysis, comprehensive judgment, and timely summary. Only in this way can we get twice the result with half the effort in the follow-up work.

    The term "automatic obstacle avoidance" for concrete laser leveling machines, including those from Vanse Machinery, generally refers to operator-aided maneuverability enabled by advanced machine design, rather than fully autonomous sensing and navigation technology. Vanse machinery utilizes several design features, particularly in their advanced telescopic boom models (like the YZ40-4E), that significantly help the operator avoid obstacles and work in complex environments: The primary method for "obstacle avoidance" with Vanse machines relies on operator control enhanced by the machine's flexible design. Feature: Vanse's boom-type machines (e.g., YZ40-4E, YZ30-4E) feature a body that can rotate infinitely (360 degrees). Benefit for Obstacle Avoidance: This high degree of agility means the operator can easily reposition the leveling head and boom around columns, existing walls, or complex boundaries without needing to move the entire chassis. This greatly reduces the non-levelinged area that must be finished manually. Feature: Larger ride-on models often include Two-wheel, Four-wheel, and Crab Steering modes. Benefit for Obstacle Avoidance: These multiple steering modes allow the operator to navigate the chassis in tight spaces and around perimeter forms with greater precision than a traditional fixed-steering vehicle. Crab steering, for instance, allows for lateral movement, which is helpful when parallel-parking next to a wall. Primary Reliance: Like most laser leveling, the ultimate obstacle avoidance is performed by the trained operator. Vanse's documentation emphasizes preliminary survey and path optimization using 3D modeling to mark obstacle locations (rebar, pipes, etc.). Procedure: The operator is trained to deliberately circumvent obstacles by 10-15 cm and then manually compensate and level the blocked-out area using small vibrators and a straightedge to ensure a smooth connection to the machine-levelinged area. It's important to clarify that the "automatic" functions on Vanse machines focus on: Automatic Leveling: Using the laser receiver and microcomputer control system to automatically adjust the leveling head height to a precision of ±1.5mm (or better) across the pour. Automatic Body Leveling: Some models offer "One-click leveling of the body" to handle various complex road surfaces before leveling begins. Vanse laser leveling machines do not currently advertise a system of autonomous obstacle sensing (using sensors or radar) that automatically stops or steers the machine away from an object. Instead, they provide superior mechanical flexibility (360° boom, multi-mode steering) to empower the human operator to efficiently navigate around complex obstacles.   Would you like to know more about the different types of Vanse laser leveling machines (Walk-behind, Four-wheel ride-on, Boom) and which are best suited for areas with many obstacles?   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.    

– Before construction, the site should be thoroughly cleaned to remove debris, garbage and loose parts of the original ground. For example, for the renovation project of old factory buildings, all oil stains and broken concrete blocks on the ground need to be cleaned up. For the base, if there is any unevenness, it needs to be repaired and compacted. If the base is a soil foundation, it should be layered and rolled according to the design requirements to make its compaction degree reach more than 90%, providing a solid foundation for concrete pouring. – At the same time, the drainage slope should be set. According to the purpose of the site and the design requirements, the general drainage slope is not less than 0.3% – 0.5%. Through precise measurement and layout, determine the drainage direction and slope control points to ensure smooth drainage and avoid water accumulation affecting the quality of the floor.   – Select qualified concrete raw materials, including cement, sand and gravel, admixtures, etc. Cement should be selected with strength grades that meet the design requirements, such as ordinary Portland cement P.O42.5 or P.O52.5, and the stability and setting time of cement should be checked. The particle size and mud content of sand and gravel should meet the specifications. For example, the maximum particle size of coarse aggregate should not be greater than 31.5mm, and the mud content should not exceed 1%; the mud content of fine aggregate should not exceed 3%. – Strictly design and test the concrete mix ratio. According to the use function of the floor (such as heavy-duty industrial floor, ordinary warehouse floor, etc.), strength requirements and construction environment, the best mix ratio is determined through laboratory trial mixing. During the construction process, concrete mixing should be carried out strictly according to the mix ratio, and the performance indicators such as slump of concrete should be tested regularly. The slump is generally controlled between 120-180mm to ensure good working performance of concrete.   – Before construction, fully commission the concrete laser leveling machine. Check the operating status of the engine or motor to ensure the normal operation of the power system. For example, the engine should start quickly, run smoothly, and have no abnormal noise and shaking. For the laser system, it is necessary to perform precise calibration and adjust the height and angle of the laser transmitter so that the laser plane it emits is consistent with the design elevation of the floor. – Calibrate the scraper, vibrator and other working parts of the leveler. The flatness error of the scraper should be controlled within ±1mm, and the frequency and amplitude of the vibrator should be adjusted according to factors such as the slump and thickness of the concrete. Generally, the vibration frequency is between 3000-5000 times/minute, and the amplitude is between 3-5mm to ensure that the concrete can be fully vibrated and leveled.   – Use appropriate concrete pouring methods, such as pumping or self-unloading. During the pouring process, the pouring speed and height should be controlled to avoid segregation of concrete. For example, when pumping concrete, the discharge port height should not exceed 1.5m, and the concrete should be evenly distributed on the site. – Use the spreading function of the laser leveler or cooperate with other spreading equipment to spread the concrete evenly on the site. The thickness of the material should be slightly higher than the design elevation, generally 10-20mm higher, to leave a margin for the leveling work. During the material laying process, care should be taken to avoid the accumulation of concrete in one place, resulting in excessive local thickness.   – When operating the laser leveling machine, the equipment should be kept moving at a uniform speed, and the speed is generally controlled between 1-2m/min. The operator should adjust the scraper height and vibration frequency of the leveling machine in time according to the laser signal and the automatic leveling function of the equipment. For example, when the laser receiver detects that the ground is higher than the design elevation, the leveling machine automatically adjusts the scraper to descend and scrapes off excess concrete; when it is lower than the design elevation, the scraper rises, and the vibrator strengthens the vibration to fill the low-lying area with concrete. – During the leveling process, attention should be paid to the connection of adjacent construction areas. The leveling work of adjacent areas should be completed before the initial setting of the concrete, and the flatness and density of the connection should be guaranteed. Generally, the overlapping construction method is adopted, and the overlapping width is between 10-20cm to ensure the flatness and integrity of the entire floor.   – Professional quality inspection personnel are equipped to check the flatness, density and elevation of the floor in real time during the construction process. Use tools such as level, 2m ruler and feeler gauge for inspection. For example, for each construction area (such as 100-200 square meters), use 2m ruler and feeler gauge to check the flatness, and the flatness error should be controlled within ±3mm; use level to check the elevation, and the elevation error should be controlled within ±5mm. – For parts that do not meet the quality requirements, timely adjustments and repairs should be made. If it is found that the local flatness exceeds the tolerance, it can be repaired by using a small leveling tool or manual smoothing method; for areas with insufficient density, use a flat vibrator to vibrate again or an inserted vibrator to supplement the vibration.   – After the concrete is leveled, the finishing treatment is carried out according to the use requirements of the floor. If it is an industrial floor that requires wear resistance, mechanical smoothing and manual fine smoothing can be carried out after the initial setting of the concrete. Mechanical troweling generally uses a driving trowel, and the number of troweling passes is not less than 3 times, so that the floor surface reaches a certain gloss and hardness. – After finishing, timely maintenance should be carried out. You can use methods such as covering with plastic film, straw mats or spraying curing agents. The curing time is determined according to factors such as the type of concrete and the ambient temperature, and is generally not less than 7-14 days. During the curing period, the concrete surface should be kept moist to avoid cracks in the concrete due to water loss.   – During the curing period, the floor should be protected as a finished product, and warning signs should be set up to prevent people and vehicles from walking or working on the floor that does not meet the strength requirements. For example, for heavy-duty industrial floors, heavy vehicles are strictly prohibited from passing when the concrete strength does not reach more than 70% of the design strength. – After the curing period, quality acceptance is carried out in accordance with design requirements and relevant standards. The acceptance content includes indicators such as the flatness, strength, and thickness of the floor. For example, the thickness and strength of the floor can be tested by core sampling, and the strength should reach the designed strength level; a laser flatness meter is used to test the flatness of the entire floor to ensure that the flatness of large-area floors meets quality requirements.