CN203513207U - Forklift inching valve - Google Patents
Forklift inching valve Download PDFInfo
- Publication number
- CN203513207U CN203513207U CN201320569887.7U CN201320569887U CN203513207U CN 203513207 U CN203513207 U CN 203513207U CN 201320569887 U CN201320569887 U CN 201320569887U CN 203513207 U CN203513207 U CN 203513207U
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- CN
- China
- Prior art keywords
- plug
- hole
- ring seals
- plug hole
- conical surface
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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.)
- Withdrawn - After Issue
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Abstract
The utility model discloses a forklift inching valve. The forklift inching valve comprises a valve body, a plug, a first O-shaped seal ring, a second O-shaped seal ring and a gasket, wherein the end face of the valve body is sequentially provided with a plug hole and a hole clamping groove from inside to outside, the plug is contained in the plug hole, and the first O-shaped seal ring is contained in the plug hole and located on one side, far away from the bottom of the plug hole, of the plug. The gasket is contained at the bottom of the plug hole, one side, facing the gasket, of the plug is a conical surface, the second O-shaped seal ring is located between the gasket and the conical surface, and the second O-shaped seal ring is compressed through a triangular seal area formed by the conical surface, the gasket and the plug hole to form a first seal structure. One side, facing the plug, of the hole clamping groove is of an arc structure to form a second seal structure with the first O-shaped seal ring. According to the forklift inching valve, the two seal structures are designed, and it can be guaranteed that the end face of the valve body can not leak oil.
Description
Technical field
The utility model relates to valve body, specifically a kind of fork truck inching valve.
Background technology
Fork truck inching valve is one of key components and parts in fork truck hydraulic systems, in conjunction with oil feed pump, control cock, fluid clutch, jointly uses.As WD-A8 inching valve, it specifically applies to forklift gear-box, forms forklift-walking control system with the parts such as oil feed pump, control cock, fluid clutch.WD-A8 inching valve is mainly realized fork truck fine motion function by changing system pressure value.
As shown in Figure 1, WD-A8 inching valve end face seal structure is comprised of in conjunction with valve body 16 plug 10, O-ring seals 12, hole card 14, and Leakage, is one of modal failure mode of inching valve in actual use, and particularly end face oil leakage phenomenon is in the majority.The major cause that causes leakage of oil is that fitting process O-ring seals 12 is sheared, and the more difficult control of actual mechanical process.
Utility model content
For preventing, because seal ring is sheared the leakage of oil causing, the utility model proposes a kind of fork truck inching valve, it,, by changing sealing means, increases dual side seal, very effectively controls end face leakage of oil.
The utility model is achieved in that a kind of fork truck inching valve, and it comprises valve body, plug, the first O-ring seals; The end face of this valve body is disposed with plug hole, hole draw-in groove from inside to outside, and this plug is housed in this plug hole, and this first O-ring seals is also housed in this plug hole and is positioned in the side of this plug away from this bottom, plug hole; Wherein: this fork truck inching valve also comprises the second O-ring seals, pad; This pad is housed in this bottom, plug hole, this plug is the conical surface towards a side of this pad, this second O-ring seals, between this pad and this conical surface, forms triangle seal area by this conical surface, this pad and this plug hole three and compresses this second O-ring seals and form first hermetically-sealed construction; This hole draw-in groove is arc structure to form second hermetically-sealed construction with this first O-ring seals towards a side of this plug.
Fork truck inching valve of the present utility model, by design two seals structure, can guarantee that valve body end face can leakage of oil.
Accompanying drawing explanation
Fig. 1 is the structural representation of existing fork truck inching valve.
The structural representation of the fork truck inching valve that Fig. 2 provides for the utility model better embodiment.
The specific embodiment
In order to make the purpose of this utility model, technical scheme and advantage clearer, below in conjunction with drawings and Examples, the utility model is further elaborated.Should be appreciated that specific embodiment described herein is only in order to explain the utility model, and be not used in restriction the utility model.
Refer to Fig. 2, the structural representation of the fork truck inching valve that it provides for the utility model better embodiment.This fork truck inching valve comprises valve body 20, plug 21, the first O-ring seals 22, the second O-ring seals 24, pad 25.
The end face of this valve body 20 is disposed with plug hole 26, hole draw-in groove 23 from inside to outside.This plug 21 is housed in this plug hole 26, and this first O-ring seals 22 is also housed in this plug hole 26 and is positioned in the side of this plug 21 away from these 26 bottoms, plug hole.
This pad 25 is housed in this 26 bottoms, plug hole, this plug 21 is the conical surface towards a side of this pad 25, this second O-ring seals 24, between this pad 25 and this conical surface, forms triangle seal area by this conical surface, this pad 25 and this plug hole 26 threes and compresses this second O-ring seals 24 and form first hermetically-sealed construction.This hole draw-in groove 23 is arc structure to form second hermetically-sealed construction with this first O-ring seals 22 towards a side of this plug 21.
In sum, the utility model is pad 25 of interior increase in plug hole 26, again plug 21 one end structures are designed to the conical surface, utilize the conical surface, pad 25 and valve body 20 endoporus threes to form triangle seal area and compress the second O-ring seals 24, form first hermetically-sealed construction, this seal structures, the second O-ring seals 24 can not sheared by hole draw-in groove 23 completely when assembling, can guarantee sealing.Then change the chamfering of hole draw-in groove 23 into arc structure, play without wedge angle, prevent that the first O-ring seals 22 on conical surface plug cylindrical is sheared when assembling, form second hermetically-sealed construction.
Thereby fork truck inching valve of the present utility model, by design two seals structure, can guarantee that valve body end face can leakage of oil.
The foregoing is only preferred embodiment of the present utility model; not in order to limit the utility model; all any modifications of doing within spirit of the present utility model and principle, be equal to and replace and improvement etc., within all should being included in protection domain of the present utility model.
Claims (1)
1. a fork truck inching valve, it comprises valve body, plug, the first O-ring seals; The end face of this valve body is disposed with plug hole, hole draw-in groove from inside to outside, and this plug is housed in this plug hole, and this first O-ring seals is also housed in this plug hole and is positioned in the side of this plug away from this bottom, plug hole; It is characterized in that: this fork truck inching valve also comprises the second O-ring seals, pad; This pad is housed in this bottom, plug hole, this plug is the conical surface towards a side of this pad, this second O-ring seals, between this pad and this conical surface, forms triangle seal area by this conical surface, this pad and this plug hole three and compresses this second O-ring seals and form first hermetically-sealed construction; This hole draw-in groove is arc structure to form second hermetically-sealed construction with this first O-ring seals towards a side of this plug.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201320569887.7U CN203513207U (en) | 2013-09-13 | 2013-09-13 | Forklift inching valve |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201320569887.7U CN203513207U (en) | 2013-09-13 | 2013-09-13 | Forklift inching valve |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN203513207U true CN203513207U (en) | 2014-04-02 |
Family
ID=50372166
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201320569887.7U Withdrawn - After Issue CN203513207U (en) | 2013-09-13 | 2013-09-13 | Forklift inching valve |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN203513207U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103482534A (en) * | 2013-09-13 | 2014-01-01 | 合肥力威汽车油泵有限公司 | Forklift inching valve |
-
2013
- 2013-09-13 CN CN201320569887.7U patent/CN203513207U/en not_active Withdrawn - After Issue
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103482534A (en) * | 2013-09-13 | 2014-01-01 | 合肥力威汽车油泵有限公司 | Forklift inching valve |
| CN103482534B (en) * | 2013-09-13 | 2015-07-08 | 合肥力威汽车油泵有限公司 | Forklift inching valve |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| AV01 | Patent right actively abandoned |
Granted publication date: 20140402 Effective date of abandoning: 20150708 |
|
| RGAV | Abandon patent right to avoid regrant |