Damping balance valve

A balancing valve and damping technology, applied in the field of damping balancing valve, can solve the problems of insufficient hydraulic walking system, unsatisfactory controllability, large hydraulic impact force, etc., and achieve the effect of improving the smoothness of action, simple structure and eliminating pressure vibration.

Inactive Publication Date: 2015-11-11
宁波江东晟利工业产品设计有限公司
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  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Due to its disadvantages such as high energy consumption and poor controllability, manufacturers at home and abroad are looking for a way to start and stop softly, save energy, and have good controllability. The mode in which the motor drives the tires through the drive axle
However,

Method used

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Example Embodiment

[0015] The embodiments of the present invention will be described in further detail below with reference to the accompanying drawings.

[0016] Figure 1 to Figure 3 It is a schematic diagram of the structure of the present invention.

[0017] The reference signs are: A channel, B channel, C channel, D channel, the first radial damping hole n1, the second radial damping hole n2, the first axial damping hole n3, the second axial damping hole n4 , valve body 1, balance valve core group 2, left balance valve cavity 2a, right balance valve cavity 2b, balance valve core 21, left axial pilot oil passage 21a, right axial pilot oil passage 21b, central annular table 211, storage Oil lubrication groove k, left seal shaft section 212, left groove section 213, right seal shaft section 214, right groove section 215, left spring seat 22, left spring 23, left valve seat 24, right spring seat 25, right spring 26. Right valve seat 27, one-way throttle valve with detachable damping 3, one-wa...

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Abstract

The invention discloses a damping balance valve. The damping balance valve comprises a valve body with a balance valve core group, wherein the balance valve core group is provided with a damper; an one-way throttle valve combination which has a buffering function so as to improve the action smoothness of the balance valve core group and is provided with a dismountable damper is mounted in the valve body; the one-way throttle valve combination with the dismountable damper consists of two one-way throttle valves with dismountable dampers, which are mounted in the valve body in a symmetrical manner; in the valve body, a hole is drilled downwards in the upper end of a left end surface relatively close to the valve body, so that a channel A used as a main working oil channel extending downwards is formed; a hole is drilled downwards in the upper end of a right end surface relatively close to the valve body, so that a channel B used as a main working oil channel extending downwards is formed; a channel C which extends upwards and is used as a main control oil channel, and a channel D which extends upwards and is used as a main control oil channel are symmetrically formed in a punching manner in the left side and the right side of the center line in the valve body; a balance valve cavity penetrating through the channel A, the channel C, the channel D and the channel B sequentially is horizontally formed in the left end surface of the valve body. The damping balance valve is simple in structure and high-efficient in performance, and can effectively weaken the pressure peak generated by hydraulic pressure fluctuation, so that the whole system can stably run.

Description

technical field [0001] The invention relates to the hydraulic control technology of engineering machinery, in particular to a balance valve applied to a full-hydraulic walking wheel excavator or a loader, in particular to a damping balance valve. Background technique [0002] At present, most of the wheeled excavators and loaders adopt the mechanical walking type, that is, the tires are directly driven by the diesel engine through the drive axle and gearbox. Due to its shortcomings such as high energy consumption and poor controllability, manufacturers at home and abroad are looking for a way to start and stop softly, save energy, and have good controllability. The motor drives the tires through the transaxle. However, in actual operation, due to the lack of a suitable balance valve, the full hydraulic travel system is not enough in the process of oil circuit switching, which often leads to problems of large hydraulic impact force and high pressure vibration, so the control...

Claims

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Application Information

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IPC IPC(8): F15B13/02
CPCF15B13/02
Inventor 赵光书石道凯熊玉英
Owner 宁波江东晟利工业产品设计有限公司
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