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Variable pump hydraulic system self-adaptive to loads

An adaptive load, hydraulic system technology, applied in the direction of fluid pressure actuation system components, fluid pressure actuation devices, servo motors, etc.

Pending Publication Date: 2020-10-20
SHANGHAI ELECTRICAL HYDRAULICS & PNEUMATICS
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

At this time, the existing independent variable motor system cannot meet this new requirement

Method used

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  • Variable pump hydraulic system self-adaptive to loads
  • Variable pump hydraulic system self-adaptive to loads

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Embodiment Construction

[0013] The present invention will be further described in detail below in conjunction with the accompanying drawings, so as to facilitate the understanding of those skilled in the industry:

[0014] See figure 2 As shown, the embodiment of the present invention proposes an adaptive load variable pump hydraulic system, which includes a plunger type bidirectional variable pump 1, a regulating piston 2, and a two-position three-way valve 3.

[0015] The piston rod 21 of the regulating piston 2 is linked with the valve plate 11 of the bidirectional variable pump 1.

[0016] The working oil port A of the bidirectional variable pump 1 communicates with the rod cavity of the regulating piston 2, the oil inlet of the two-position three-way valve 3 and its first control end through the first check valve 4; The working oil port B is respectively communicated with the rod cavity of the regulating piston 2, the oil inlet of the two-position three-way valve 3, and the first control end thereof ...

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Abstract

The invention relates to a variable pump hydraulic system self-adaptive to loads. The variable pump hydraulic system comprises a plunger type bidirectional variable pump, an adjusting piston and a two-position three-way valve, wherein a piston rod of the adjusting piston is linked with a valve plate of the bidirectional variable pump; a working oil port A and a working oil port B of the bidirectional variable pump communicate with a rod cavity of the adjusting piston, an oil inlet of the two-position three-way valve and a first control end of the two-position three-way valve through one-way valves; a rodless cavity of the adjusting piston communicates with an oil outlet of the two-position three-way valve through a throttling valve; the first control end of the two-position three-way valveis further connected with an unauthorized oil way, and the unauthorized oil way is provided with an oil port X; and the oil port X is connected with an external control oil source. The variable pumphydraulic system has the advantages that the oil port X is additionally formed in the first control end of the two-position three-way valve, the control initial value is influenced by applying pilot pressure to the oil port X, and the oil inlet and the oil outlet of the hydraulic control two-position three-way valve communicate in advance, so that a valve plate of the plunger type motor is linked,the displacement is increased to the maximum, and a plunger type motor can realize a low-speed large-torque working state under a no-load condition.

Description

Technical field [0001] The invention relates to the technical field of mechanical equipment, and in particular to a variable pump hydraulic system with adaptive load. Background technique [0002] Such as figure 1 As shown, it is a conventional independent variable motor system, including a plunger type two-way variable pump 1', a regulating piston 2'and a two-position three-way valve 3'; a piston rod 21' of the regulating piston 2'and a two-way variable pump 1'valve plate 11' linkage. The working oil port A'of the bidirectional variable pump 1'is respectively communicated with the rod cavity of the regulating piston 2', the oil inlet of the two-position three-way valve 3'and the first control end thereof through the first one-way valve 4'; The working oil port B'of the bidirectional variable pump 1'is respectively communicated with the rod cavity of the regulating piston 2', the oil inlet of the two-position three-way valve 3'and the first control end through the second one-way...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): F15B11/08F15B13/02F15B21/00
CPCF15B11/08F15B13/02F15B13/027F15B21/00
Inventor 王宗胜陈俊龙
Owner SHANGHAI ELECTRICAL HYDRAULICS & PNEUMATICS