High-reliability hydraulic reversing device

Abstract

The invention discloses a high-reliability hydraulic reversing device. The high-reliability hydraulic reversing device comprises a hydraulic reversing valve and a control valve. The hydraulic reversing valve comprises a reversing valve body. The two ends of the reversing valve body are provided with reversing valve covers correspondingly. A sealed piston cavity is defined by the reversing valve body and the reversing valve covers. The control valve is internally provided with two oil outlets communicating with the piston cavity. A reversing slide rod is arranged between the two reversing valve covers and sleeved with a piston which is slide fit with the reversing slide rod. The end surfaces of the two ends of the piston are provided with concave cavities correspondingly. Reversing reset units are arranged in the concave cavities. Each reversing reset unit comprises an inner slide base and an outer slide base, each inner slide base is slidably installed on the reversing slide rod in a matched and sleeving mode and is in contact fit with the bottom of the corresponding concave cavity, and each outer slide base is installed on the reversing slide rod in a sleeving mode and in slide fit with the corresponding concave cavity. A reset spring installed on the reversing slide rod in a sleeving mode is arranged between each inner slide base and the corresponding outer slide base. The reversing slide rod is provided with outer circular grooves. Outer circular clamping rings for limiting the outer slide bases are arranged in the outer circular grooves correspondingly.

Description

technical field [0001] The invention belongs to the technical field of valves, and in particular relates to a hydraulic reversing device with high reliability. Background technique [0002] The valve is a control component in the fluid delivery system, which has functions such as cut-off, adjustment, flow diversion, reverse flow prevention, pressure stabilization, flow diversion or overflow pressure relief. In the existing axial plunger hydraulic pumps, the flow rate is generally adjusted by changing the inclination angle of the swash plate, and the inclination angle of the swash plate is generally adjusted by a manual servo valve. Although it can meet the use requirements to a certain extent, there is a manual The operation is complicated and the control precision is not high. Contents of the invention [0003] In view of this, the object of the present invention is to provide a hydraulic reversing device with high reliability, which has the advantages of convenient oper...

AI Technical Summary

Problems solved by technology

In the existing axial plunger hydraulic pumps, the flow rate is generally adjusted by changing the inclination angle of the swash plate, and the inclination angle of the swash plate is generally adjusted by a manual servo valve. Although it can meet the use requirements to a certain extent, there is a manual Complicated operation and low control precision

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