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The elevator is a fast loop to increase the moving speed of the working part without increasing the output flow of the hydraulic pump. The essence is to change the effective working area of ​​the hydraulic cylinder. You are equipped with a manual for the elevator products. The operation of the products is carefully read and carefully handled by the customers. It must be noted that the reversing valve and the tubing passage of the differential oil circuit should be selected according to the flow rate during differential flow. Otherwise, the flow liquid resistance is too large, which will cause some oil of the hydraulic pump to flow back from the overflow valve to the fuel tank, and the speed is slowed down. Can't afford to use it.
In elevators, there are not many places where the hydraulic lifts use electricity, mainly the power operation box, the power unit and the lines attached to the lifting arm. If the customer uses the elevator outdoors, it is recommended to work in the harsh weather such as rain and snow. It is recommended to do the power operation box and the external shielding work of the power unit. At the same time, the wire part should be avoided during the summer use to avoid the line breakage. The lifting equipment is basically conductive equipment. If there is leakage, the non-personal staff should not contact or disassemble for inspection. The external power supply should be cut off immediately to ensure personal safety as the primary purpose. Maintenance of the lift http://, must be carried out by personnel with relevant qualification certificates, especially the replacement of electrical related parts, etc., more professional personnel are required to operate.
Used for fast and slow conversion, where fast motion uses a differentially connected loop. When the electromagnet at the left end of the reversing valve is energized, the left position of the valve enters the system. The pressure oil output by the hydraulic pump and the oil in the right chamber of the cylinder enter the left chamber of the hydraulic cylinder through the left and lower positions, achieving differential connection and making the piston fast. Move to the right. When the rapid movement ends and the retaining iron on the working part presses the motorized reversing valve, the pressure of the pump rises and the valve opens. The returning oil of the right chamber of the hydraulic cylinder can only flow back to the fuel tank through the speed regulating valve. give. When the solenoid at the right end of the reversing valve is energized, the piston quickly retracts to the left. The fast loop method using the differential connection is simple and economical, but the fast and slow speed switching is not smooth enough. 