Lifting speed-controllable hydraulic cushion cylinder control system

Abstract

The invention provides a lifting speed-controllable hydraulic cushion cylinder control system. The system comprises a fast cylinder, side cylinders, a fast cylinder rod cavity oil inlet return way, afast cylinder plug cavity oil inlet return way, side cylinder plug cavity oil inlet return ways, a control unit and hydraulic pipelines; and the system is characterized in that the side cylinders arearranged on the two sides of the fast cylinder respectively, the fast cylinder rod cavity oil inlet return way is connected with a rod cavity of the fast cylinder through one hydraulic pipeline, the fast cylinder plug cavity oil inlet return way is connected with a plug cavity of the fast cylinder through one hydraulic pipeline, and the side cylinder plug cavity oil inlet return ways are connectedwith plug cavities of the side cylinders through the hydraulic pipelines. The combination between the fast cylinder and the side cylinders is used, the structure is simple, the action is definite, the reliability is high, and the application range is wide; and under the condition that the energy consumption is not increased, an existing motor and an existing pump are used for realizing the actionof fast lifting and slow lifting of the hydraulic cushion cylinder, the speed of hydraulic equipment is increased, and the working efficiency is further improved.

Description

technical field [0001] The invention relates to the technical field of hydraulic control, in particular to a hydraulic pad cylinder control system with controllable lifting speed. Background technique [0002] With the rapid development of China's production level and the gradual enhancement of equipment manufacturing capabilities, the tonnage of domestic hydraulic equipment has also increased. Customers have higher and higher requirements on the pressure and speed of hydraulic equipment, so the original hydraulic control system cannot meet the speed requirements of hydraulic equipment, and needs to be improved and replaced. In the hydraulic equipment of the prior art, the rapid hydraulic control system of the master cylinder system is very mature. Increase the speed of the master cylinder system through the fast cylinder, or by increasing the weight of the slider. However, the rapid hydraulic control system of the hydraulic pad cylinder is progressing very slowly. Some hy...

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Problems solved by technology

However, the rapid hydraulic control system of the hydraulic pad cylinder is progressing very slowly. Some hydraulic equipment in the prior art does not have the fast action of the hydraulic pad cylinder, or some hydraulic equipment increases the speed by adding a motor oil pump to increase the oil intake. This method increases the loss, which is contrary to the energy saving and emission reduction advocated by the country, and also increases the operating cost of the equipment

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