Hydraulic operating mechanism and hydraulic control valve

A technology of hydraulic control valve and hydraulic operation, applied in contact drive mechanism, fluid pressure actuating device, mechanical equipment, etc., can solve the problems of high manufacturing precision, inconvenient maintenance, complicated assembly, etc., and achieve the goal of reducing manufacturing precision. requirements, ease of maintenance, and ease of assembly

Active Publication Date: 2021-11-16
PINGGAO GRP +2
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0006] The purpose of the present invention is to provide a hydraulic operating mechanism to solve the problems of inconvenient assembly, maintenance and high cost of the hydraulic control valve of the existing hydraulic operating mechanism; at the same time, another purpose of the present invention is to provide a hydraulic control valve , to solve the problem of high manufacturing precision and complicated assembly caused by the need to set the pressure maintaining wing in the existing hydraulic control valve

Method used

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  • Hydraulic operating mechanism and hydraulic control valve
  • Hydraulic operating mechanism and hydraulic control valve
  • Hydraulic operating mechanism and hydraulic control valve

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 2

[0074] Such as Figure 4 As shown, the difference between this embodiment and Embodiment 1 is that in Embodiment 1, the driving rod 15 and the repulsion module are arranged on the right side of the spool 4, and the channel 13 of the left moving area is arranged in the spool 4, while the present embodiment In the embodiment, the driving rod 15 and the repulsion module are arranged on the left side of the valve core 4. In order to avoid the influence of the driving rod 15 on the channel 13 of the left moving area, the channel 13 of the left moving area is arranged in the valve body, and the effective end surface area A1 is reduced. , A4 increases, but still satisfies A1>A2, and A1

Embodiment 3

[0076] Such as Figure 5 and Figure 6 As shown, the difference between this embodiment and Embodiment 1 is that in Embodiment 1, the driving rod 15 and the repulsion module are arranged on the right side of the spool 4, and the left moving area channel 13 is arranged in the spool 4, while this embodiment In the embodiment, drive rods 15 and repulsion modules are provided on the left and right sides of the spool 4, and each drive rod 15 is arranged separately from the corresponding spool 4, and the corresponding end faces of the drive rod 15 and the spool 4 There is an interval between them; at this time, the repulsion modules all move in one direction, and the strokes of the repulsion modules are greater than the stroke of the spool 4, that is, the repulsion modules are stopped by the spool 4 and the valve body; because the drive rod 15 on the left is in the Under the action of the high-pressure oil in the left moving area 11, it can move to the left to ensure the leftward r...

Embodiment 4

[0078] Such as Figure 7 As shown, the difference between this embodiment and Embodiment 3 is that in this embodiment, a length adjustment structure is provided between the output end of the repulsion module and the drive rod 15, and the length adjustment structure includes an adjustable connecting rod 22, which can be adjusted The two ends of the connecting rod 22 are provided with reverse threads, which are respectively threaded on the drive rod 15 and the transmission rod 19; the adjustable connecting rod 22 is also provided with a locking nut 23, which is used for locking and positioning after the adjustment is in place. ;By adjusting the wrench position in the middle of the adjustable connecting rod 22, the distance between the drive rod 15 and the corresponding end of the valve core 4 can be adjusted to meet different opening and closing time requirements, and the stop element can be changed, and the valve core 4 can be relied on. The stop between the valve bodies can al...

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Abstract

The invention relates to a hydraulic operating mechanism and a hydraulic control valve. The hydraulic operating mechanism includes a working cylinder and a hydraulic control valve. The hydraulic control valve includes a valve body, a valve core, and a driving rod. The valve body is provided with a left moving area and a right moving area. The driving rod is set corresponding to the end face of the valve core. It is used to push and / or pull the spool under the drive of the drive module; the valve body and / or the spool are provided with a channel for the left moving area and a channel for the right moving area; the spool is exposed to the moving area of ​​the left spool The effective end surface area of ​​the spool is A1, the effective end surface area exposed to the normal high pressure oil area when the spool moves to the right to the limit position is A2, and the effective end surface area exposed to the working oil area when the spool moves to the left to the limit position is A3, The effective end surface area of ​​the spool exposed to the right moving area is A4, then A1>A2, and A1

Description

technical field [0001] The invention relates to a hydraulic operating mechanism and a hydraulic control valve. Background technique [0002] The opening and closing action time of the circuit breaker is a key parameter of the performance of the circuit breaker, and this key parameter is mainly guaranteed by the operating mechanism of the circuit breaker. For the hydraulic operating mechanism, its working cylinder acts under the control of the hydraulic control valve, so the hydraulic control valve needs to have a high response speed. [0003] Conventional hydraulic control valves are electromagnetic control valves, and the reversing of the hydraulic control valve is realized by changing the communication state of the channel in the valve body by means of the electromagnetic valve. However, the response speed of conventional electromagnetic control valves is limited, and it is difficult to meet the requirements of fast response speed. The reasons are as follows: 1. The elect...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): F15B13/02H01H3/32
CPCF15B13/02H01H3/32
Inventor 钟建英谭盛武陈维江林莘韩国辉刘宇刘煜李海文雷琴张友鹏段晓辉魏建巍孙珂珂魏义涛张利欣
Owner PINGGAO GRP
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