A distribution plate that can distribute different flow differences

Abstract

The invention discloses a flow distribution plate capable of distributing different flow differences for a high-pressure axial plunger pump with multiple oil outlets. The distribution plate is composed of three layers: the upper layer, the middle layer and the bottom layer. The raised part of the distribution window of the middle layer is in high pressure sealing fit with the positioning part of the upper layer and the bottom layer. The distribution plate is a series structure of multiple distribution windows: there are multiple oil suction windows and two (or more) oil discharge windows, one side is the distribution window C, and the other side is two (or more) distribution windows arranged in series A, B, multiple flow distribution windows are located on the same graduation circle. The middle layer of the distribution plate can rotate freely through the servo control drive, changing the area size of the A and B distribution windows, and through the adjustment of the middle layer of the distribution plate, the flow rate of the A and B distribution windows can be changed, so that the two distribution windows output different flow rates , corresponding to the two chambers of the differential oil cylinder with different flow differences, the action of the differential oil cylinder with different flow differences can be directly controlled with one pump, and the practical value is high.

Description

technical field [0001] The invention belongs to the field of hydraulic technology, and in particular relates to a flow distribution plate capable of distributing different flow differences. Background technique [0002] At present, the direct pump control technology has made great progress. The high dynamic response servo and proportional axial piston variable pumps have been successfully developed, and the variable speed control technology has been introduced. These technologies have achieved good results in pump control symmetrical cylinders. However, the effect is not ideal when applied to differential cylinders; the reason is that these pumps can only output symmetrical flow, and if they are directly connected to differential cylinders, many auxiliary methods are required. When a single axial piston variable pump is used to directly control the movement of the differential cylinder, due to the volume difference between the two chambers of the differential cylinder, the f...

AI Technical Summary

Problems solved by technology

The distribution plate of the present invention is used in an axial plunger pump with an asymmetric flow distribution structure, so that one pump can solve the asymmetric flow rate between the two cavities of the differential oil cylinder with different cavity differences, and control the action of the differential oil cylinder with different cavity differences.

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