Collection of misunderstandings in concrete laser leveling machine maintenance

Control the pouring speed: Since the concrete has a large slump and good fluidity, the pouring speed should not be too fast to prevent the concrete from flowing and accumulating quickly in the formwork, resulting in loose vibration or segregation. Avoid excessive height difference: The free fall height of concrete should be controlled within 2m. If it exceeds this height, auxiliary tools such as string tubes and chutes should be used to prevent the concrete from segregating due to large drop and affecting the overall performance of the pavement. Reasonable selection of vibration equipment: It is advisable to use a low-frequency vibrator, and the vibration frequency is generally 2000-3000 times/minute. Avoid using a high-frequency vibrator to cause over-vibration of the concrete, which will cause the aggregate to sink, the cement slurry to float, and the stratification and segregation. Control vibration time: The vibration time should not be too long. The surface of the concrete no longer sinks significantly, bubbles no longer appear, and cement slurry appears on the surface. Generally, the vibration time at each point is controlled within 20-30 seconds. Timely surface finishing: Since the surface of concrete with large slump has more moisture, it is necessary to wait for the surface moisture to evaporate properly before finishing. Generally, it is 1-2 hours after the concrete pouring is completed. The specific time needs to be determined according to the site environment and the concrete setting conditions. Too early surface finishing will cause surface marks or unevenness, and too late will affect the surface finishing effect. Multiple surface finishing: Usually 2-3 surface finishings are required. The first surface finishing is carried out after the concrete surface is initially dehydrated, mainly for rough leveling; the second surface finishing is carried out before the initial setting of the concrete, further slurry lifting and smoothing; the third surface finishing is carried out before the final setting of the concrete, mainly to eliminate fine surface cracks and defects, making the road surface smoother and flatter. Timely covering: After the concrete surface is finished, it should be covered with plastic film, geotextile, etc. immediately to prevent the surface from drying out and cracking due to rapid evaporation of water. The covering should be tight to ensure that the concrete surface is always moist. Extended curing time: The strength of concrete with large slump increases relatively slowly. The curing time should be appropriately extended, generally not less than 14 days. During the curing period, water should be sprinkled regularly to keep the covering moist, so that the concrete can harden under suitable humidity conditions and improve the strength and durability of the road surface.  

​Laser leveling machine is developed according to the increasing demand of modern industrial plant, large shopping mall, warehouse and other large area cement concrete ground for ground quality, such as strength, flatness, levelness, etc. It has the characteristics of good performance and high efficiency. A. Preparations: (1) After the basic treatment, the laser paver is debugged and fixed reference level is drawn according to the original level; non-woven fabrics and side dies are laid, laser transmitters are erected, and ground elevation is introduced into laser leveller according to the original level. (2) The concrete is transported by commercial concrete. The commercial concrete is transported to the entrance and exit of the garage by tank truck, and then transported to the construction site by three-wheel dumper truck. (3) The elevation of the ground floor is checked by hand-held laser receiver, and the elevation is introduced into the laser paver to adjust the reference point (±0.00) on the leveller. B. Concrete Paving: (1) After the formwork is supported, the warehouse should be cleaned one day in advance and soaked with water before pouring concrete. When approaching pouring, drain open water, sweep cement slurry or interface agent. Obvious water accumulation is strictly prohibited at this time. If so, the concrete can be paved only if it is removed resolutely. (2) After the concrete is laid down, it is preliminarily flattened. The flattened height should be 3cm thicker than the elevation. Then it is leveled with a laser paver. The corners which can not be leveled can be leveled by gasoline leveling ruler or manual method. (3) For concrete mixer can not drive to the site area, but also use tractors to transport concrete. After the completion of the pouring, the floor lighting construction will begin when the concrete is initially solidified. (4) In construction, the laser signal received by the laser paver receiver (10 times per second ) automatically adjusts the elevation in real time to ensure that the construction elevation is always in the set standard. Because the laser transmitter is fixed after being set up, it can ensure that the construction of large area of the ground does not produce cumulative errors. (5) During the construction, the operator uses a hand-held laser receiver to inspect the ground after the construction of the machine to ensure that the smoothness error is within the controllable range again. *Notice: It is necessary to ensure that all parts of the laser leveling machine are connected perfectly, without any loosening, so as to prevent problems in the operation process. Add enough lubricating oil to laser leveling machine in advance to improve the flexibility of controller, so as to improve work efficiency. The surface insulation of cable must be complete, and the slightly damaged parts should be treated with caution until they are all in good condition. This can not only ensure the safety of construction personnel, but also the safety of passers-by. After turning on the power supply, it is necessary to check the direction of the motor rotation. If there is a mistake, it is necessary to change the line immediately in order to avoid greater problems in working hours. Laser leveling machine operators should undergo professional training, such as in the operation process, they can not tilt, can not grasp too tight and other elements should be mastered well, in order to avoid accidents accidentally. Laser leveling machine in the construction process, needs density of soil, can repeat consolidation, don't move back and forth, so even if the result is the same, it will spend more energy on moving, not economical. Welcome for asking if you had any needs in the concrete paving machine needs!!

  The laser leveling machine equipment produced by our manufacturer has good precision. It can perform leveling work efficiently and accurately under any conditions, saving a lot of manual maintenance operations and truly realizing the advantages of intelligent performance. If users want to truly play the role of the laser leveling machine, they can only better apply the equipment by understanding its operating points. So, what is the importance of adjusting the relaxation angle during the construction of the laser leveling machine? The molds used in the field of precision stamping processing are equipped with guide pins to correct the length of the material fed into the mold each time to ensure the accuracy of the stamping production. If this correction is to be truly realized, the laser leveling machine must be equipped with a relaxation device to achieve it. After the tip of the mold guide pin enters the stamping material, the laser leveling machine clamp is in a relaxed state. At this time, the guide pin can correct the error in time, and this relaxation time is the relaxation angle of the laser leveling machine. When professional technicians install laser levelers for customers to debug and test molds, they will adjust the leveling height, leveling angle and relaxation angle of the leveler according to the molds used by the customers for actual mold testing. After single punching and mold testing, continuous punching will be performed to ensure that the continuous punching reaches the predetermined accuracy. At the same time, they will provide detailed training to the operators of the punch laser leveler production line, teaching them how to use, debug, maintain and repair the laser leveler equipment on a daily basis. However, in actual use, many operators use laser levelers for the first time. After replacing the new mold for the punch, they often only remember to adjust the height of the laser leveler (because after changing the mold, the mold height is different, and the leveling height needs to change, which is very intuitive), but ignore the adjustment of the relaxation angle of the leveler. At this time, the leveling will be inaccurate. The operator is not familiar with the leveler and often can't think of the problem. At this time, the operator will complain that the leveler is not good and can only be used for one mold. In fact, this is because the relaxation angle of the laser leveler has not been adjusted correctly, resulting in inaccurate leveling. The laser leveling machine manufacturer told us that the adjustment of the leveling angle of the laser leveling machine after changing the mold is an indispensable link. The adjustment standard is that when the mold guide pin enters the material hole and relaxes, the guide pin is not out of the material pinhole when the mold rises. The precision laser leveling machine clamps the material as the basic principle, so as to truly ensure the high-precision punching production. The equipment provided by the laser leveling machine manufacturer has a more advanced function, can perform leveling operations efficiently, and our price is reasonable and the product quality is good. I don't know if you have gained some new knowledge about the laser leveling machine through our detailed introduction above? If our sharing provides you with corresponding help, please continue to pay attention to our website. We will share more exciting news with you later. Thank you for your support.