For small cranes with long working hours, some vulnerable parts will inevitably have problems, especially steel ropes. Here Xiaobian collects and sorts out the relevant information and gives you a brief explanation of what caused it:
This deformation generally occurs on steel wire ropes with steel cores. This deformation occurs when the outer strands are disjointed or become longer than the inner strands. They should be scrapped immediately to avoid accidents during operation.
This situation is generally accompanied by cage distortions. The strands are squeezed out to indicate that the ropes are not balanced. The ropes that are extruded from the strands should be scrapped and replaced with new ones.
The wavy deformation of the wire rope is a spiral shape of the longitudinal axis, this deformation does not necessarily lead to any loss of strength in the arc, but the deformation is severe, which will cause a jump to cause irregular transmission. Should replace the new wire rope in time.
How to maintain the "heart" of the small crane
Regular maintenance is necessary to restore the performance of the small crane and extend the life of the small crane. However, in the actual operation process, some maintenance personnel have a lot of mistakes and wrong practices, affecting the maintenance effect of the small crane.
The engine is the "heart" of the small crane, so maintenance of the small crane engine is crucial. Here, Xiao Bian gave you six aspects about the maintenance of the small crane engine:
Use lubricating oil that meets the requirements and do not use inferior lubricating oil.
For gasoline engines, SD-SF grade gasoline engine oil should be selected according to the attachment and use conditions of the intake and exhaust systems; diesel engine must use CB-CD grade diesel engine oil according to the mechanical load. In general, the standard should not be lower than the manufacturer's requirements. Prevail.
Regularly change the oil and filter element.
No matter what the quality of the lubricating oil in the use of the oil will change during the process, in order to avoid the occurrence of failure, should be combined with the operating environment, working hours, regular replacement of oil, oil to maintain moderate, not too much or too little.
Keep the crankcase well ventilated.
Most petrol engines now have a PCV valve, but contaminants in the helium gas may be deposited around the PCV valve, possibly causing the valve to clog. So be sure to regularly remove the contaminants around the PCV valve.
Clean the crankcase regularly.
During the operation of the engine, the high-pressure unburned gases, acid, moisture, sulfur and nitrogen oxides in the combustion chamber enter the crankcase through the gap between the piston ring and the cylinder wall and mix with the metal powder produced by the wear of the components. Sludge. So be sure to clean the crankcase regularly to keep the inside of the engine clean.
Clean the fuel system regularly.
Control the formation of coke to ensure that the engine remains in optimum condition.
Engine tank maintenance work.
The water tank of the engine is relatively easy to produce scale and rust. The rust and scale will limit the flow in the coolant cooling system, reduce the heat dissipation, cause the engine to overheat, and even cause engine damage. So be sure to clean the tank regularly to remove rust and limescale.