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Two-position three-way hydraulic valve

A two-position three-way, hydraulic valve technology, applied in the field of hydraulic valves, can solve the problems of waste of gravitational potential energy, difficulty in recovery, etc.

Active Publication Date: 2015-06-17
GUANGXI LIUGONG MASCH CO LTD
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  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] The purpose of the present invention is to provide a two-position three-way hydraulic valve for the application of the existing excavator working device in the process of frequent take-offs and landings, in which the gravitational potential energy is wasted or difficult to recover. Recovery system of gravitational potential energy in the process from high position to low position

Method used

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  • Two-position three-way hydraulic valve

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Embodiment Construction

[0017] The specific implementation will be described below in conjunction with the accompanying drawings.

[0018] Such as Figures 1 to 3 As shown, the two-position three-way hydraulic valve includes a valve body 51 and a spool 52. The valve body 51 is provided with three oil ports, A port, B port, and C port. The spool 52 has a first position and a There are two fixed-point positions in the second position. A first one-way valve 53, a second one-way valve 55, and a throttle valve 54 are also arranged in the valve body 51. The second one-way valve 55 is connected in series with the throttle valve 54. The oil inlet of the valve 53 communicates with the C oil port, and the oil outlet communicates with the B oil port. When the spool 52 is in the first position, as figure 2 As shown, the A oil port is connected with the B oil port; when the spool 52 is in the second position, as image 3 As shown, the A oil port communicates with the oil inlet end of the second one-way valve ...

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Abstract

The invention relates to a two-position three-way hydraulic valve and aims at realizing the potential energy recovery of a moving arm of an excavating machine. The invention discloses a two-position three-way hydraulic valve, which comprise a valve body and a valve core, wherein three oil openings including an oil opening A, an oil opening B and an oil opening C are arranged in the valve body, the valve core is provided with two positioning points in the first position and the second position, when the valve core is positioned in the first position, the oil opening A and the oil opening B are communicated, when the valve core is positioned in the second position, the oil opening B and the oil opening C are mutually communicated, and the oil opening A and the oil opening C are communicated. The two-position three-way hydraulic valve provided by the invention can realize the opening or closing action of a system in a potential energy recovery utilization system of the moving arm of the excavating machine, so the potential energy recovery utilization system of the moving arm of the excavating machine can be realized.

Description

technical field [0001] The invention relates to a hydraulic valve, in particular to a two-position three-way hydraulic valve. technical background [0002] As a fast and efficient construction machine, the hydraulic excavator is one of the main mechanical equipment in the earthwork construction project. It is known as the "king of construction machinery" in the industry. Mechanized construction in industries such as electric power engineering, farmland transformation, mining and modern military engineering. [0003] Hydraulic excavator, as a kind of cycle excavation machine, needs to raise and lower the boom frequently. Since the lifting and lowering of the boom is connected with the lifting and lowering of the stick, bucket and other devices, the boom, stick, bucket and other devices installed on the The working device composed of the stick cylinder, bucket cylinder and some connecting parts has a great weight. When the boom cylinder lifts the working device, it needs to o...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): F15B13/02
Inventor 何旺李群华
Owner GUANGXI LIUGONG MASCH CO LTD
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