CN203516892U - Constant pressure valve hole structure - Google Patents
Constant pressure valve hole structure Download PDFInfo
- Publication number
- CN203516892U CN203516892U CN201320573282.5U CN201320573282U CN203516892U CN 203516892 U CN203516892 U CN 203516892U CN 201320573282 U CN201320573282 U CN 201320573282U CN 203516892 U CN203516892 U CN 203516892U
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- CN
- China
- Prior art keywords
- constant pressure
- pressure valve
- hole structure
- processing
- valve
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- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired - Fee Related
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Abstract
The utility model discloses a constant pressure valve hole structure. The constant pressure valve hole structure comprises a valve body and overflow holes formed in the valve body. The overflow holes are two side-by-side round holes. In the motion process of a constant pressure valve core, the outer circle of the valve core is uniformly supported, does not deflect easily and can move freely and axially. The clamping stagnation phenomenon caused by overhanging of the valve core is reduced, and the effect of stabilizing the pressure is achieved. The processing manufacturability is good, a constant pressure valve hole does not deform easily in the processing process, the high form and location tolerance requirement can be kept, and round hole processing is easier than kidney-shaped hole processing and saves the processing time.
Description
Technical field
The utility model relates to a kind of pressure fixing valve for pilot pressure, in particular a kind of pressure fixing valve hole structure.
Background technique
The pressure fixing valve of fork truck control valve is by valve body, pressure fixing valve spool, pressure fixing valve outer spring, pressure fixing valve inner spring, resilient key and plug form, major control control valve main system oil pressure value, the pressure fixing valve flow-off of the control valve using in the market all adopts " waist-hole type " structure, but in actual use, there is pressure fixing valve spool catching phenomenon in this structure, force value is unstable, show that different rotating speeds force value is different, same rotating speed force value also can be had any different, main cause be due to spool in this structure in the state of overhanging, at place, waist hole, lack and support the pressure fixing valve spool clamping stagnation that easily deflects and cause.
Model utility content
The purpose of this utility model is to overcome the deficiencies in the prior art, and a kind of pressure fixing valve hole structure is provided, and changes the structure in the waist hole of valve body into double-pore structure, between two holes, is entity, plays the pressure fixing valve spool effect of supporting.
The utility model is achieved through the following technical solutions: the utility model comprises valve body and be arranged at the overflow hole on valve body, and described overflow hole is two circular holes side by side.
As one of optimal way of the present utility model, described two circular holes are tangent, and tangent part is entity.
As one of optimal way of the present utility model, described valve body is provided with connected successively spool, outer spring, inner spring, resilient key and plug.
The utility model has the following advantages compared to existing technology: pressure fixing valve spool of the present utility model is in whole movement process, and spool cylindrical, in supporting comparatively uniformly, is not easy to produce deflection, can keep free axial motion; The catching phenomenon that reduction causes because spool overhangs, reaches the effect of steady pressure; Technology capability is good, and on the one hand pressure fixing valve valve opening is difficult for distortion adding man-hour, can keep higher Geometrical Tolerance Principle, processes on the other hand circular hole than processing waist shaped hole easily and save process time.
Accompanying drawing explanation
Fig. 1 is structural representation of the present utility model;
Fig. 2 is that the H-H of Fig. 1 is to schematic diagram;
Fig. 3 is that the A-A of Fig. 1 is to schematic diagram.
Embodiment
Below embodiment of the present utility model is elaborated; the present embodiment is implemented take technical solutions of the utility model under prerequisite; provided detailed mode of execution and concrete operating process, but protection domain of the present utility model is not limited to following embodiment.
As shown in Figures 1 to 3, the present embodiment comprises valve body 1 and is arranged at the overflow hole 7 on valve body 1, and valve body 1 is provided with connected successively spool 2, outer spring 3, inner spring 4, resilient key 5 and plug 6.Described overflow hole 7 is two circular holes side by side, and described two circular holes are tangent, and tangent part is entity.
Spool 2 is under hydraulic oil effect, and compression outer spring 3 and inner spring 4, form fixation pressure, and plug 6 and resilient key 5 work to support outer spring 3 and inner spring 4.
Claims (3)
1. a pressure fixing valve hole structure, is characterized in that, comprises valve body (1) and is arranged at the overflow hole (7) on valve body (1), and described overflow hole (7) is two circular holes side by side.
2. pressure fixing valve hole structure according to claim 1, is characterized in that, described two circular holes are tangent, and tangent part is entity.
3. pressure fixing valve hole structure according to claim 1, is characterized in that, described valve body (1) is provided with connected successively spool (2), outer spring (3), inner spring (4), resilient key (5) and plug (6).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201320573282.5U CN203516892U (en) | 2013-09-16 | 2013-09-16 | Constant pressure valve hole structure |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201320573282.5U CN203516892U (en) | 2013-09-16 | 2013-09-16 | Constant pressure valve hole structure |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN203516892U true CN203516892U (en) | 2014-04-02 |
Family
ID=50375824
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201320573282.5U Expired - Fee Related CN203516892U (en) | 2013-09-16 | 2013-09-16 | Constant pressure valve hole structure |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN203516892U (en) |
-
2013
- 2013-09-16 CN CN201320573282.5U patent/CN203516892U/en not_active Expired - Fee Related
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20140402 Termination date: 20180916 |
|
| CF01 | Termination of patent right due to non-payment of annual fee |