Shell rotating type hydraulic motor flow distributor

Abstract

The invention relates to a shell rotating type hydraulic motor flow distributor. The flow distributor comprises a rotary flow distribution face and flow distribution windows. In the work process, the flow distributor and a rotary shell rotate synchronously; the flow distribution windows are grooves sinking inwards along the rotary flow distribution face, and the flow distribution windows do not communicate with any surface except for the rotary flow distribution face; and a static flow distribution face in contact with the flow distributor is provided with plunger hole channels, a pressure oil channel and a return oil channel. In the work process, on a plunger stretching curved section, the flow distribution windows enable the plunger hole channels to communicate with the pressure oil channel, and plungers stretch to push the rotary shell to rotate; and on a plunger recovery curved section, the flow distribution windows enable the plunger hole channels to communicate with the return oil channel, the plungers are recovered under the action of a guide rail curved surface, and the process is cycled in this way, so that the rotary shell rotates continuously. According to the shell rotating type hydraulic motor flow distributor, the number of parts where oil passes is reduced, meanwhile, the structure is simplified, machining and assembling difficulty is reduced, and production efficiency is improved.

Description

technical field [0001] The invention relates to the technical field of hydraulic components, in particular to a casing-rotating hydraulic motor distributor. Background technique [0002] At present, most of the domestic casing-rotating hydraulic motors are fixed by the cylinder body, and the rotating casing with guide rails rotates, and the plunger holes on the cylinder body have a plunger hole channel that communicates with the static flow distribution surface. When this hydraulic motor is working, we call the curved surface section of the guide rail that the plunger on the plunger hole contacts when the plunger hole channel communicates with the oil pressure channel as the plunger protruding curved surface section. When the plunger hole communicates with the oil return channel The curved surface segment of the guide rail corresponding to the contact of the plunger on the plunger hole is called the curved surface segment of the plunger retraction. The distributor rotates s...

AI Technical Summary

Problems solved by technology

[0003] For example, a Chinese utility model patent "A Shell Rotary Hydraulic Motor" with the patent application number 201320630992.7 (publication number CN 203627076 U) discloses a flow distributor. The distribution process is that the pressure oil enters the oil delivery shaft through the installation support, and then It enters the flow distributor through the input shaft, and then enters the plunger hole through the second distribution of the flow distribution plate to push the plunger to move. This flow distribution method has many parts and complex structures.

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