A swash plate driven flow distribution integrated variable displacement plunger pump

Abstract

The present invention relates to a swash plate driven flow distribution integrated variable displacement plunger pump, comprising a main shaft, a cylinder body, a front housing, a swash plate, a plunger, a sliding shoe, a return component and a variable displacement device, and the swash plate is rotatably arranged in the front housing , a plunger hole is provided on the opposite end face of the cylinder block and the swash plate, and the plunger is slidably matched with the plunger hole. Oil chamber and low-pressure oil chamber, the outer surface of the front shell is provided with an oil inlet and an oil outlet, the oil outlet is connected with the high-pressure oil chamber, the main shaft center hole is arranged in the main shaft, and the main shaft center hole is respectively connected with the oil inlet port and the low-pressure oil chamber are connected, and the variable device includes a variable piston, a variable transition slider and an electromagnet. By changing the magnetic force of the electromagnet, the left and right movement of the variable piston is controlled to realize the variable. The present invention has low starting torque and friction torque and low power. The density and reliability are high, and the invention relates to the technical field of axial piston pumps.

Description

technical field [0001] The invention relates to the technical field of axial plunger pumps, and more specifically, to a variable displacement plunger pump integrated with swash plate drive and flow distribution. Background technique [0002] The swash plate axial piston pump is a commonly used hydraulic component in hydraulic transmission systems. It has been widely used due to its compact structure, high pressure and long life compared with other hydraulic pumps. [0003] The swash plate axial piston pump can be roughly divided into two types from the structure: the traditional swash plate axial piston pump and the swash plate axial piston pump. [0004] The traditional swash plate type axial variable piston pump adopts the transmission method that the main shaft drives the cylinder body to rotate through the spline, and the flow distribution plate is used on the bottom end of the cylinder body to distribute the flow; the swash plate can swing around the rotary axis in a ce...

AI Technical Summary

Problems solved by technology

[0006] Axial distribution type swash plate axial piston pump is driven by the main shaft through the key to rotate the swash plate, the cylinder body is fixed, and a distribution shaft needs to be installed at the bottom of the cylinder body, which cannot realize variable variables and has a large axial dimension

[0007] Valve distribution type swash plate axial piston pump, this structure is driven by the main shaft through the key to rotate the swash plate, the cylinder body is fixed, and the oil suction valve combined with the oil discharge valve group is set at the bottom of the cylinder body, which cannot realize variable variables, and the axial dimension is relatively small. Big

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