There are various problems in the use of small cranes. Now, Senyuan crane manufacturers share some common problems and solutions in some small crane operations. Automated Vision Inspection System
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First, the oil leakage of the crane oil pipeline:
1. The joint is loose 2. The seal is damaged. 3. The pipe is broken. Measures:
1. Tighten the joint 2, replace the seal 3, replace the pipe 2. The hydraulic pressure of the crane does not rise. Reason:
1. The hydraulic oil of the fuel tank is too low or the suction pipe is blocked. 2. The open pressure of the overflow valve is too low. 3. The displacement of the oil pump is insufficient. 4. The pressure pipeline and the return line are collapsing or the components are too leaky. 5. The oil pump is damaged or the leakage is too large. :
1. Refueling view 2. Adjusting the relief valve 3. Increasing the engine speed 4. Repairing the oil circuit, paying special attention to the intermediate reversing joints and oil motors of each valve. 5. Repairing the oil pump. 3. The noise of the crane pipeline oil circuit is large.
1. There is air in the pipeline, the oil temperature is too low, 3. The pipeline and components are not tightened. 4. The oil filter is blocked. 5. The oil quantity is lacking. Measures:
1. Take several measures, sweep the internal air of the component and sweep the oil pipe to leak. 2. Turn the oil pump to the ground speed, heat the oil 3. Fasten 4. Replace the filter element 5. Refuel 
Fourth, the turntable steering failure If your small crane does not turn well, or turn to Karton, steering instability, automatic sliding and stagnation steering is not working, first check the disk gear bite, and then replace the steering motor balancing valve, replace Steer the motor and check the reducer for removal.
5. The hydraulic oil temperature is too high. If the hydraulic oil rises too fast during use, it can be solved by adding a radiator. If there is a condition, a water-cooled radiator can be added. If the problem cannot be solved, the hydraulic tank of the crane can be increased. Add more hydraulic oil to thicken the oil inlet and return line, which can change the problem of too fast heating too high.
6. The phenomenon that the crane cab can not be pushed. The common solution is to check whether the physical link has no problem first. If there is no link problem, it is necessary to check whether the on-board operation valve has a stuck valve phenomenon, which can be solved by replacing the valve core.
7. Crane H leg sinking phenomenon Check whether there is pressure leakage and oil leakage in the pipe connection. Check whether the cylinder body has oil leakage and oil leakage. It can be solved by changing the oil seal and replacing the balance valve. If it cannot be solved, it must be Replace the cylinder as a whole!
Eight, the weight of the crane's boom is fluctuating. First check whether the butter in the bushing at the joint between the crane's variable-width cylinder and the arm seat is sufficient and there is no abnormal noise. Then check the sturdy oil line interface to the degree of firmness and whether it enters the air. Check whether the valve body of the upper service valve is blocked, whether the pressure valve of the lower service valve is loose, and finally check the variable amplitude balance valve and the variable amplitude cylinder, which can be solved by replacing the balance valve and the oil seal of the cylinder. 
The above are the eight major problems and solutions in the small crane operation summarized by Senyuan Heavy Industry . I hope I can help you!