Valveless reversing device and method

Abstract

The invention discloses a valveless reversing device and method which are applied to a hydraulic system. The device comprises an oil tank used for containing hydraulic oil, a valve block, an executing mechanism, an oil pump and a rotating driver. The valve block comprises a plunger pump, a first one-way valve and a second one-way valve. The executing mechanism is used for executing telescopic action and comprises a piston rod, a first chamber and a second chamber, wherein the first chamber and the second chamber are positioned on the two sides of a piston piece of the piston rod correspondingly. The oil pump is used for pumping hydraulic oil and comprises a third one-way valve, a fourth one-way valve, a fifth one-way valve and a two-way pump. The rotating driver is used for driving a plunger pump shaft of the plunger pump and a two-way pump shaft of the oil pump to rotate in at least two rotation directions. The valveless reversing device can replace a traditional control mode adopting an expensive directional control valve, the manufacturing cost is reduced, and the reliability is good.

Description

technical field [0001] The invention relates to a hydraulic system, in particular to a valveless reversing device and method. Background technique [0002] In the hydraulic system, the hydraulic oil flowing in the pipeline often changes quickly, and in this case, a high pressure peak can be formed in the pipeline, and the impact pressure can be as high as 3-3% of the normal working pressure. 4 times, it is very easy to damage the components, pipes, instruments, etc. in the hydraulic system, such as vibration, noise, and loose connections caused by hydraulic shock, resulting in oil leakage and changes in pressure valve adjustment pressure. [0003] Due to the limitation of the performance of ultra-high pressure directional control components, domestic products often encounter many difficulties in realizing automatic control. For example, the quality of high-thrust electromagnets is unreliable, which affects the movement of the valve core. Problems such as stuck valves occurr...

AI Technical Summary

Problems solved by technology

[0004] The present invention provides a valveless reversing device and method for the relatively unstable and high-cost problems of using traditional directional control valves in the existing hydraulic system to cope with the impact of high-pressure hydraulic oil.

Images