Laser leveling machine manufacturers explain to you in detail: Six major effects of engine oil on equipment

– From a design perspective, the transmission parts of the concrete trowel are usually designed with the convenience of maintenance in mind. These parts are generally composed of multiple independent parts, such as transmission chains, belts, gears, etc. When a part fails, it can be disassembled and replaced separately without replacing the entire transmission system. – From a cost perspective, repairing transmission parts is much cheaper than replacing the entire transmission system. For some higher-priced transmission parts, such as high-precision gear sets, repairs can extend their service life and reduce the overall cost of equipment use. Failure phenomenon: Loose, worn or broken chains are common problems. Loose chains can cause unstable power transmission and jitter when the trowel is working; worn chains may jump teeth, affecting the normal operation of the trowel; broken chains will directly cause the trowel to fail to work. Maintenance method: If the chain is just loose, you can restore its proper tension by adjusting the chain tensioner. For worn chains, it is necessary to determine whether they can continue to be used based on the degree of wear. Generally speaking, when the wear of the chain exceeds a certain limit (such as the chain link elongation exceeds 3% – 5% of the original length), the chain should be replaced. If the chain breaks, you need to replace it with a new chain and check the cause of the chain break, such as whether it is caused by too tight chain, too heavy load or chain quality problems. Failure phenomenon: Belt slippage, wear or aging are common problems. Belt slippage will cause insufficient power of the trowel and reduced work efficiency; cracks and peeling may occur on the surface of the worn belt, affecting power transmission; aging belts will become hard, brittle and easy to break. Maintenance method: If the belt slips, you can first check the tension of the belt and adjust the tensioning device appropriately to increase the tension of the belt. For worn or aged belts, they should be replaced in time. When replacing the belt, be sure to choose the same belt model as the original one, including the length, width, tooth shape (if it is a synchronous belt) and other parameters. Failure phenomenon: Gear wear, tooth surface bonding or gear tooth breakage are common problems. Gear wear will lead to reduced transmission accuracy and noise; tooth surface bonding will increase the friction between gears and even cause jamming; gear tooth breakage will cause transmission interruption. Maintenance method: For slightly worn gears, the tooth surface accuracy can be restored by grinding, trimming and other methods. If the tooth surface is bonded, it is necessary to clean the bonding material on the tooth surface first, then check the lubrication and improve the lubrication conditions of the gear. For broken gear teeth, it is generally necessary to replace new gears. When installing new gears, pay attention to ensuring the installation accuracy of the gears, such as the center distance, parallelism and other parameters of the gears must meet the requirements. – Before repairing the transmission components, be sure to cut off the power supply of the trowel machine and wait for the transmission components to stop rotating completely before operating to avoid accidents. – During maintenance, use appropriate tools, such as wrenches, screwdrivers, pullers, etc. to remove and install parts. For high-precision transmission parts, such as planetary gear sets, use special tools to remove and install to avoid damage to the parts. – After the maintenance is completed, debug the transmission parts to check whether the power transmission is normal, whether there is abnormal noise or vibration, etc. If a problem is found, find the cause and make adjustments in time.

  Relationship with the direction of principal stress: The main function of the steel mesh is to bear the tensile force in the concrete structure. When the structure is stressed, the principal stress will be generated inside the concrete. The laying direction of the steel mesh should be consistent with the principal stress direction as much as possible, so that the tensile strength of the steel bars can be fully exerted and the bearing capacity of the structure can be effectively improved. For example, in a one-way slab, the load is mainly transmitted along the short span direction, and the direction of the principal tensile stress is also roughly along the short span direction. Therefore, the bottom steel mesh is usually arranged along the short span direction to resist the tensile force. Two-way stress situation: For a two-way slab, the spans in both directions are similar, and both bear a large load. The steel mesh in both directions must bear tensile force. At this time, the steel mesh should be arranged in a certain proportion according to the force size in the two directions, and is generally laid perpendicular to each other, so that the structure can have sufficient bearing capacity and good deformation performance in both directions. Control of crack direction: A reasonable laying direction of the steel mesh can guide the development direction of the crack, so that it develops in the direction with less influence on the structural force. For example, in concrete pavement, transverse reinforcement can limit the development of longitudinal cracks, while longitudinal reinforcement can restrain transverse cracks, thereby improving the integrity and durability of the pavement. Improving crack resistance: When the steel mesh is laid along the direction where cracks may occur, it can play a "bridge" role after the concrete cracks, withstand the tension on both sides of the cracks, and prevent the cracks from further expanding. For example, in the wall of a hydraulic structure, the horizontal and vertical steel meshes work together to effectively improve the wall's ability to resist cracks caused by factors such as temperature changes and concrete shrinkage. Protecting steel bars: The correct laying direction of the steel mesh helps to ensure the protective effect of concrete on the steel bars. The steel bars are wrapped in concrete to prevent them from rusting and corroding when exposed to the external environment. If the steel mesh is laid improperly, resulting in deviation in the position of the steel bars or uneven thickness of the protective layer, the steel bars are prone to rust under the action of external corrosive media, thereby reducing the durability of the structure. For example, in the basement structure of a building, the laying of the steel mesh should ensure that there is a sufficient and uniform concrete protective layer to prevent groundwater from corroding the steel bars. Uniform stress: Reasonable laying direction makes the steel mesh evenly stressed in the structure, avoiding premature destruction of concrete due to local stress concentration, thereby providing a stable protective environment for the steel bars and extending the service life of the structure. In short, the laying direction of the steel mesh is an important factor affecting the performance of the building structure. During the construction process, the laying direction of the steel mesh must be reasonably determined according to the stress characteristics and design requirements of the structure to ensure the safety, applicability and durability of the building structure.

The working efficiency of concrete laser leveling machines varies depending on the specific model and operation method, but in general, its efficiency has been significantly improved compared to traditional manual levelinging methods. Specifically, an ordinary concrete laser leveling machine can construct 600 to 1,050 square meters per hour at a normal driving speed of 4 to 7 meters per minute. Based on eight hours per shift, one piece of equipment can construct 4,800 to 8,400 square meters in one shift. Depending on the actual working conditions, this value will decrease. However, compared with the efficiency of manual construction within 800 square meters per shift, mechanical construction can undoubtedly greatly shorten the construction period and save construction costs. Therefore, it can be seen that the concrete laser leveling machine has high working efficiency. For more information, you can ask us for answers.