Safe and wear-resistant oil supply system of lifting device

Abstract

The invention discloses a safe and wear-resistant oil supply system of a lifting device. The oil supply system comprises an oil cylinder, an oil pipe, a rotary distribution valve, the lifting device and a stop valve, wherein the rotary distribution valve is mounted at the top end of the lifting device; the oil cylinder is mounted in the lifting device; the stop valve is mounted at the bottom of the oil cylinder; the oil cylinder comprises a cylinder body, a piston and an end cover; the end cover is mounted at the bottom of the cylinder body; a through hole is formed in the middle position of the piston at the upper part of a valve body; a piston rod is mounted at the upper part of the piston; a small cavity is formed in the bottom of the piston rod; the top of the piston extends into the small cavity; and the through hole is communicated with the small cavity. The oil cylinder is connected with a hydraulic pump station through the rotary distribution valve to prevent the lifting device from wearing the oil pipe in the steering process, and the small cavity in the oil cylinder enables the descending speed to be decreased when a vehicle-mounted plate descends to near the ground, so that the slow descending is realized, the ground impact from the descending is relieved, and the effects of more safety and reliability are achieved; and when the oil pipe suddenly bursts, the stop valve enables the lifting devices to slowly descend so as to reduce the accident rate.

Description

technical field [0001] The invention relates to the field of hydraulic oil cylinders, in particular to a safe and wear-resistant lifting device oil supply system. Background technique [0002] With the growth of population and the development of society, vehicles are increasing day by day. Due to the rapid increase in the number of cars, the problem of parking difficulties has become increasingly prominent. Especially large vehicles, such as large passenger cars, are mostly parked in open-air parking lots, occupying a large amount of flat space. Especially in the bustling areas of big cities, flat parking lots can no longer meet the needs of large vehicles for parking and entering and exiting. In the bustling areas of big cities where every inch of land is very expensive, the use of three-dimensional parking garages and underground parking garages for cars will be an inevitable trend of future development. However, the number of underground parking garages is limited, and...

AI Technical Summary

Problems solved by technology

The current lifting device is driven by a motor, usually through a motor and a reducer. In some unexpected situations such as a power failure, the rapid decline of the vehicle-carrying plate may easily lead to accidents. The use of hydraulic cylinder drive can solve this problem very well. , but the current hydraulic cylinders are directly connected to the hydraulic station through oil pipes. When rotating, the oil pipes will rotate with the equipment, so the wear is serious

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