Laser leveling machine manufacturers reveal to you the root cause of the equipment hopper being unable to close
September 30, 2024
Laser leveling machine manufacturers reveal to you the root cause of the equipment hopper being unable to close 2
Long-term use of the laser leveling machine will cause major and minor faults. When facing these faults, we must find a solution to the problem. A common problem is that the laser leveling machine hopper cannot be closed. When such a problem occurs, we must first find the root cause of the problem and find the answer to the problem based on the root cause. The following laser leveling machine manufacturer will reveal the reason why the laser leveling machine hopper cannot be closed.
Reason 1: Insufficient thrust of the hopper cylinder.
The laser leveling machine manufacturer will show you the reason that the hydraulic oil in the laser leveling machine hopper cylinder leaks. First, check the piston seal. Aging or wear of the seal will cause insufficient thrust of the hopper cylinder. Replace it if necessary. If there is no problem with the laser leveling machine seal, check the gap between the cylinder and the piston of the equipment. Cylinder wear can make the gap too large, making the thrust of the laser leveling machine hopper cylinder smaller. If it is found that there is no hydraulic oil in the laser leveling machine hopper cylinder during the inspection, it may be that the equipment overflow valve is faulty, causing it to be in an open state for a long time, so that no oil flows into the hopper cylinder. At this time, check whether there is dirt in the overflow valve.
Reason 2: Insufficient oil supply pressure of the hydraulic pump.
The laser leveling machine manufacturer will let you know that it is generally caused by leakage of the laser leveling machine hydraulic pump. If the hydraulic pump itself is worn, it is internal leakage, and if the seal is worn, it is external leakage. If necessary, the worn parts should be replaced in time. In addition, if the hydraulic pump does not absorb oil due to too little hydraulic oil or the hydraulic pump oil filter is blocked, it will also reduce the oil supply pressure. At this time, the pump will make a loud noise when running, so it can be judged based on whether the meshing sound of the pump gear is normal.
Reason 3: The hydraulic pump is the same
The laser leveling machine manufacturer will let you know that the hydraulic pump that controls the closing of the left and right hoppers of the laser leveling machine and controls the lifting of the ironing plate is the same pump. If the left and right hoppers cannot be closed normally due to the hydraulic system, the laser leveling machine ironing plate will also have a corresponding failure. Therefore, if the hopper and the screed fail at the same time, the hydraulic pump failure should be the first thing to think of. As the standards of the construction industry continue to improve, more and more users begin to pay attention to high-precision floor construction, and a laser leveling machine product that focuses on precision and efficiency can be recognized by users to a large extent. Technology is important, and concepts are also important.
The knowledge points shared by the laser leveling machine manufacturer have deepened your impression. I hope this article can help you. Secondly, it is recommended that you regularly maintain and care for the equipment, which can reduce the number of repairs. Thank you for your continued attention and support.
About the Author: Shandong Vanse Machinery Technology Co., Ltd.
Shandong Vanse Machinery Technology Co., Ltd. is a high-tech manufacturer specializing in concrete construction machinery, including laser screeds and related equipment. The company integrates R&D, production, and global sales, with products exported to over 60 countries and widely used in infrastructure projects worldwide.
How to properly clean the laser leveling machine oil tank, let the experts tell you in detail
Many users often ignore a part when maintaining the laser leveler, that is, the fuel tank. During the process of the leveler leveling the ground, a lot of things will enter the fuel tank. If the fuel tank is not cleaned all the time, the more and more things accumulated in the fuel tank in the long run will inevitably have an adverse effect on the fuel tank. At this point, everyone should pay attention to the cleaning of the laser leveler fuel tank and learn to clean the fuel tank correctly. Correct method of cleaning the laser leveler fuel tank: The fuel tank cleaning is divided into two steps, internal and external. When cleaning the engine fuel system, use the engine non-disassembly cleaning agent, because the non-disassembly cleaning agent does not need to disassemble the fuel system. On the one hand, it can start to thoroughly clean the fuel system, and on the other hand, it is beneficial to protect the engine's fuel system. When cleaning the laser leveler, you can use a clean cloth to block the fuel pipe port, and then constantly change the position and direction of the plastic pipe to try to avoid rubbing the oil level sensor. After blowing and washing for 20 minutes, release the gasoline, and the impurities in the gasoline will flow out together. It should be noted that the fuel released from the fuel tank should be precipitated for 72 hours before use. When cleaning the outside of the fuel tank, it is necessary to check whether there are dents or oil leakage in the fuel tank, fuel pipes, joints, etc., and check whether the fixing screws of the fuel tank bracket are tightened; when cleaning the inside, open the fuel tank port, take out the filter barrel, suck out the oil, and then insert the cleaned plastic tube from the refueling port to the bottom of the fuel tank, and gently blow the gasoline at the bottom of the fuel tank to make it roll to achieve the cleaning effect. It is really necessary to clean the fuel tank of the laser leveler. As the laser leveler is used for a longer time, the precipitated impurities in the gasoline will accumulate more and more in the fuel tank. These impurities first settle at the bottom of the fuel tank. When there are too many sediments, they will enter the car engine with the fuel, causing serious wear and tear on the engine. As long as you clean the fuel tank once, car owners will find how necessary it is to clean the fuel tank regularly. During the cleaning process, not only particles and colloids, but even incredible things such as tin foil and plastic sheets will be washed out. Many things car owners don't know how they got into the fuel tank. If these wastes are not cleaned up in time, the impact on the engine of the laser leveler is imaginable. This is the end of the introduction to the method of cleaning the oil tank of the laser leveling machine. I believe that you have understood it very clearly after reading it. If you want to know more about the leveling machine, you can continue to pay attention to our website, and we will provide you with more information in this regard.
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October 28, 2025
Requirements & treatment for laser leveling of concrete base layers before grinding of special floors (such as epoxy floors and curing agent floors)
The quality of the concrete base directly determines the final effect and service life of special floors (such as epoxy and curing agent floors). Laser leveling, as a high-standard process in modern floor construction, lays a solid foundation for subsequent grinding and surface layer construction. The following is a detailed description of the requirements and treatment for laser leveling of concrete base before grinding of special floors: The concrete base layer after laser leveling and treatment should achieve the following core goals to meet the requirements of special floors Extremely high flatness: Eliminate large areas of waves and local height differences, ensure uniform thickness of the floor surface layer, and avoid problems such as uneven coating wear and dust accumulation caused by uneven base surfaces. Excellent levelness: Ensures that the ground meets the designed elevation, especially for large factories, warehouses and other places with strict requirements for ground slope. Solid surface strength: The base concrete must have sufficient compressive strength and surface hardness to prevent sanding, hollowing, and be able to withstand grinding by a grinding machine. Dense and uniform surface: Reduce pores, prevent excessive penetration of floor materials (such as epoxy primer), and provide uniform adhesion for the surface layer at the same time. Controllable cracks: Through reasonable cutting techniques, irregular cracks are guided to the preset shrinkage joints to ensure that no random cracks occur on the surface layer. Laser leveling is the crucial first step to achieving the above goals. Compaction degree: The soil base must be fully compacted, with a density of no less than 90%, to prevent concrete cracking caused by future settlement. Cushion layer: Usually, graded crushed stone is used as the cushion layer, with a thickness of no less than 150mm. It needs to be evenly spread and compacted. The cushion layer serves as the foundation for stress dispersion and drainage. Waterproof and moisture-proof: For floors with a high groundwater level or the first floor, a moisture-proof layer (such as PE film) must be set up to prevent the rise of underground water vapor from causing the epoxy floor to bubble and peel off. Strength: The grade should not be lower than C25. For areas with heavy load requirements, it is recommended to use C30 or higher. The compressive strength should ultimately reach above 25MPa. Mix ratio: The water-cement ratio is crucial and should be strictly controlled below 0.5. A low water-cement ratio is the prerequisite for ensuring the high strength and wear resistance of concrete. Aggregate: Medium and coarse sand and continuously graded crushed stone should be used, with the maximum particle size not exceeding 25mm, to ensure the compactness of the concrete. Additives: Water-reducing agents (ensuring workability while reducing the water-cement ratio), fibers (anti-cracking), etc. can be added as needed. Set control points: Based on the designed elevation, establish an accurate horizontal control network through a laser emitter. Concrete paving: The height of the loose paving should be 2-3cm higher than the designed elevation to prepare for the compaction and leveling by the leveling head. Concrete laser leveling machine operation The concrete laser leveling relies on laser signals to automatically control the height of the scraper, precisely spreading and initially compacting the concrete. Advantages: Compared with traditional techniques, it can achieve extremely high flatness (the height difference within a 2-meter straightedge is ≤3mm) and levelness, with extremely high efficiency and reduced reliance on workers. Synchronous processing: After laser leveling, a large trowel with a diameter of more than 1 meter should be used immediately to lift the slurry and finish the surface, flattening the surface floating slurry and aggregates to prepare for subsequent processing. Laser leveling merely creates a "rough blank". To meet the standard of a base layer that can be ground, a series of fine treatments are still required. Timing control: The mechanical trowel operation should be carried out after the initial setting of the concrete and before the final setting (when the depth of the footprints left by a person standing on it is approximately 2-3mm). The process is usually carried out in 2 to 3 rounds. For the first coat, use a disc to lift the slurry and smooth it out. Subsequently, switch to different trowelers for cross-operation to smooth and polish the surface. High-quality polishing is the core for achieving a hard, dense and uniform surface. Objective: To ensure the full hydration of cement, enhance its strength and prevent cracking. Method Recommendation: Spray the special concrete curing agent to form a sealing film. Traditionally effective: Cover with plastic film or lay non-woven fabric and sprinkle water to keep it moist. Time: At least 7 days. During this period, no load is allowed. Objective: To guide the release of concrete shrinkage stress at the preset position, form neat straight cracks, and avoid irregular cracking. Timing: Usually within 6 to 24 hours after pouring (when the strength reaches 5 to 10MPa), it should be able to cut through the concrete without carrying the aggregates. Requirement Spacing: Generally 20 to 30 times the thickness of the concrete slab, usually 4 to 6 meters. Depth: 1/4 to 1/3 of the plate thickness. Position: Align with the center line of the column and the edge line of the equipment foundation to maintain aesthetics. Before planning the grinding construction, a comprehensive assessment of the concrete base must be conducted: Strength: The compressive strength should be ≥25MPa when tested using a rebound tester or core sampling. Insufficient strength and direct grinding will cause the aggregates to peel off. Flatness: Use a 2-meter straightedge for inspection. The drop at any point should be ≤3mm. Laser-leveled floors can usually be easily achieved. Moisture content: Tested using a CM type moisture content tester. For epoxy flooring, the moisture content of the base layer should be ≤4%. For the curing agent floor, the requirements can be appropriately relaxed, but there must be no standing water. Surface quality: Check for no hollowing (by tapping with a small hammer), no sanding, no cracks (except shrinkage joints), no oil stains or other contaminants. Even after the above processes, some pretreatment may still be required before formal grinding: Cleaning: Thoroughly remove any residual maintenance agent, dust and debris from the ground. Repair: To repair minor defects, cracks or hollows in a local area. Use high-strength epoxy resin or special cement-based repair mortar. Preliminary grinding: If there is a slight amount of floating slurry or hardener residue on the surface, it may be necessary to use a metal grinding disc for a preliminary and light grinding to open up the surface pores and prepare for the subsequent penetration of the curing agent or the adhesion of the epoxy primer. For special floors, the saying "seven parts base layer and three parts surface layer" is no exaggeration. Laser leveling technology makes it possible to achieve high-quality concrete base layers, but it must be combined with strict material control, precise timing of construction, perfect curing and scientific joint treatment. A qualified laser-leveled concrete base layer suitable for grinding should possess: Level: Check with a 2-meter straightedge. The drop should be no more than 3mm. Strong: Compressive strength ≥25MPa, with a hard surface and no sanding. Dry: Moisture content meets the standard (epoxy ≤4%). Clean: The surface is clean, free from contamination and hollowing. Uniform: The surface is dense and uniform with small color differences. Only in this way can the subsequent grinding process be carried out efficiently, and the epoxy or curing agent floor can fully demonstrate its best wear resistance, pressure resistance, aesthetic appeal and long service life. 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.
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March 1, 2024
How to monitor the status of the concrete laser leveling machine in real time during the construction process?
To monitor the status of the concrete laser leveling in real time during the construction process, the following methods can be used: 1. Vibration sensor: Install a vibration sensor on the scraper or leveling beam of the concrete laser leveling machine to monitor the vibration status of the leveling machine in real time. If an abnormality is found, it may be dealt with immediately to ensure that the leveling machine is in good working condition. 2. Depth sensor: Install a depth sensor to monitor the flatness of the concrete surface in real time. The sensor can transmit data to the control system, and the operator can adjust the operating status of the leveler based on the data to ensure that the flatness of the concrete surface meets the requirements. 3. Machine control system: Through the machine control system, the operator can monitor various operating parameters of the leveling machine in real time, such as temperature, speed, working area, etc. The control system can automatically detect and diagnose abnormalities to ensure that the leveler is in good working order. 4. Sound and video monitoring system: Set up a sound and video monitoring system around the concrete laser leveling machine to monitor the operating status of the leveling machine and the surrounding environment in real time. By observing the monitoring screen, the operator can detect abnormal situations in time and handle them. 5. Remote monitoring system: Using the remote monitoring system, the operator can monitor the operating status of the leveling machine in real time away from the construction site. By transmitting data to the remote control center via wireless network, the operator can view and adjust the parameters of the leveling machine at any time. To sum up, real-time monitoring of the status of the concrete laser leveling requires a combination of methods. Through vibration sensors, depth sensors, machine control systems, sound and video monitoring systems, and remote monitoring systems, the operating status of the levelinging machine can be fully understood, abnormal situations can be detected and handled in a timely manner, and the construction process can be ensured to proceed smoothly.
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