A dual-spool dual-degree-of-freedom rotary four-way reversing valve with an intermediate shaft

Abstract

The invention discloses a two-valve-element two-freedom-degree rotary four-way reversing valve with a middle shaft. The two-valve-element two-freedom-degree rotary four-way reversing valve with the middle shaft comprises a left end cover, a right end cover, a valve body, a left valve element, a right valve element and the middle shaft, wherein the left valve element, the right valve element and the middle shaft are arranged in the valve body; the surfaces of the left valve element and the right valve element are provided with annular grooves; the left end of the middle shaft extends into an inner hole of the left valve element, and the right end of the middle shaft extends into the right end cover through a right valve element through hole; an oil port A, an oil port B, an oil inlet P and an oil return port T corresponding to the annular grooves are formed in the wall of the valve body sequentially from left to right. The left end of the left valve element penetrates through and extends out of the left end cover, and is connected with a main shaft of a driving motor, the driving motor drives the left valve element to rotate, and therefore the work frequency of an execution mechanism is controlled. The axial movement of the right valve element is controlled through a three-way reversing valve, and therefore the amplitude displacement of the execution mechanism is controlled. The two-valve-element two-freedom-degree rotary four-way reversing valve with the middle shaft is symmetric in structure, the valve elements and the valve body are stressed evenly, the structure is stable, the two valve elements and two freedom degrees are achieved, and the work frequency and amplitude displacement of the execution mechanism can be controlled independently. The two-valve-element two-freedom-degree rotary four-way reversing valve with the middle shaft is suitable for the field of electro-hydraulic vibration exciting.

Description

technical field [0001] The invention relates to the field of hydraulic reversing valves, and is mainly used in the field of independent control of multi-parameters (working frequency and displacement amplitude) of high-speed reciprocating motion of an actuator. Background technique [0002] The main method of concrete block forming is vibration and pressure forming. The forming principle is to make various particles in the mold box move relative to each other under the action of vibration and pressure to achieve a compact effect. Vibration is an important link in the concrete block forming process. The forming quality and production efficiency of concrete blocks depend to a large extent on the performance of the vibration equipment on the concrete block forming machine, so the vibrating table is the most important part of the entire block forming machine. The key part, the exciter is one of the key components of the vibration table, and the breakthrough of its core technolog...

AI Technical Summary

Problems solved by technology

[0005] The object of the present invention is to provide a dual-spool dual-degree-of-freedom rotary four-way reversing valve with an intermediate shaft, which can independently control the operating frequency and amplitude of the electro-hydraulic exciter, and overcome the existing hydraulic reversing valve. The defects of small flow rate of directional valve, large axial hydraulic force, low reversing frequency and difficult adjustment

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