CN203548967U - End face seal structure for hydraulic forklift gearbox inching valve - Google Patents
End face seal structure for hydraulic forklift gearbox inching valve Download PDFInfo
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- CN203548967U CN203548967U CN201320671724.XU CN201320671724U CN203548967U CN 203548967 U CN203548967 U CN 203548967U CN 201320671724 U CN201320671724 U CN 201320671724U CN 203548967 U CN203548967 U CN 203548967U
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- valve
- seal structure
- face seal
- end socket
- valve body
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Abstract
The utility model relates to an end face seal structure for a hydraulic forklift gearbox inching valve. Compared with the prior art, the defects that assembly efficiency is low, and the operation precision requirement is high are overcome. The end face seal structure comprises a slide valve, a valve body and a valve rod, wherein the valve rod is sleeved with the valve body through a framework oil seal. The valve rod is sleeved with a front elastic collar, a gasket and a valve rod spring respectively. The front end of the slide valve and the rear end of the valve rod are installed inside the valve body and sleeved with the valve body. The rear end of the slide valve is sleeved with a slide valve spring. The end face seal structure further comprises an end socket. A seal ring is arranged on the end socket, the front end of the end socket is connected with the slide valve through the gasket, and the rear end of the end socket is limited into the valve body through the elastic collar. The end face seal structure for the hydraulic forklift gearbox inching valve is more reliable in oil sealing effect, and has the advantages of being convenient to assemble, low in cost and simple in structure.
Description
Technical field
The utility model relates to inching valve technical field, is a kind of end face seal structure for hydraulic fork lift gearbox inching valve specifically.
Background technique
The inching valve that hydraulic fork lift gearbox uses at present, its tail end face sealing configuration all adopts piston seal.The size of size at the bottom of inner plug outside dimension, seal groove, O RunddichtringO that the requires this sealing configuration perfection that must match with valve opening size, in order to guarantee reliable sealing effect, strict to the requirement on machining accuracy of jump-ring slot and each parts.And this sealing configuration is in practical set process, also may occur the situation that O RunddichtringO outer rim is cut off, and causes seal failure, has increased assembling difficulty.Although technological means can guarantee the seal groove degree of depth, machining accuracy and degree of finish at present, but causes the problem that work efficiency is low.How to develop a kind of simple in structure, operate the inching valve end face seal structure portable, efficiency of assembling is high become be badly in need of solve technical problem.
Model utility content
The purpose of this utility model is in order to solve the defect that in prior art, efficiency of assembling is low, homework precision requirement is high, provides a kind of end face seal structure for hydraulic fork lift gearbox inching valve to solve the problems referred to above.
To achieve these goals, the technical solution of the utility model is as follows:
A kind of end face seal structure for hydraulic fork lift gearbox inching valve, comprise guiding valve, valve body and be sleeved on the valve rod in valve body by outside framework oil seal, on described valve rod, be set with front circlip, pad and valve rod spring, described guiding valve front end and valve rod rear end are installed and are sleeved in valve body, described guiding valve rear end suit slide valve spring, also comprise end socket, on described end socket, seal ring is housed, the front end of end socket is connected with guiding valve by pad, and the rear end of end socket is spacing in valve body by rear circlip.
Also comprise O type circle, described O type circle is arranged between pad and end socket.
Described end socket is comprised of projection, groove and support block connection.
beneficial effect
A kind of end face seal structure for hydraulic fork lift gearbox inching valve of the present utility model, compared with prior art its oil sealing effect is more reliable, has feature easy to assembly, with low cost, simple in structure.Greatly avoid the seepage of inching valve end face in long-term use, increased reliability, improved efficiency of assembling.
accompanying drawing explanation
Fig. 1 is cross-sectional view of the present utility model
Fig. 2 is stopper structure schematic diagram described in the utility model
Wherein, circlip, 13-O type circle, 111-projection, 112-groove, 113-support block after 1-valve rod, 2-outside framework oil seal, the front circlip of 3-, 4-pad, 5-valve rod spring, 6-valve body, 7-slide valve spring, 8-guiding valve, 9-pad, 10-seal ring, 11-end socket, 12-.
Embodiment
For making that structure characteristic of the present utility model and the effect reached are had a better understanding and awareness, in order to preferred embodiment and accompanying drawing, coordinate detailed explanation, be described as follows:
As shown in Figure 1, a kind of end face seal structure for hydraulic fork lift gearbox inching valve described in the utility model, comprise guiding valve 8, valve body 6 and be sleeved on the valve rod 1 in valve body 6 by outside framework oil seal 2, outside framework oil seal 2 is arranged between valve rod 1 and valve body 6 front ends, rises with oil sealing object.On valve rod 1, be set with front circlip 3, pad 4 and valve rod spring 5, front circlip 3, pad 4 and valve rod spring 5 are respectively used to valve rod 1 interlock when inching valve is worked and use, guiding valve 8 front ends and valve rod 1 rear end are installed and are sleeved in valve body 6, and valve rod 1 can be with movable pulley 8 to move like this.Guiding valve 8 rear end suit slide valve springs 7, slide valve spring 7 is used for coordinating guiding valve 8 to move.Also comprise end socket 11, as shown in Figure 2, end socket 11 is comprised of projection 111, groove 112 and support block 113 connections, end socket 11 is connected by various ways such as can adopting sticky and, bolt between projection 111, groove 112 and support block 113, in order to guarantee oil sealing effect and long-term use, adopt one-shaping technique to produce the end socket 11 being formed by projection 111, groove 112 and support block 113 best.Seal ring 10 is housed on end socket 11, and seal ring 10 is contained on groove 112, guarantees sealing effect.The front end of end socket 11 is connected with guiding valve 8 by pad 9, and the rear end of end socket 11 is spacing in valve body 6 by rear circlip 12, and end socket 11 is just fixed on the rear end of valve body 6 inside like this, plays sealing effect.At this, for plug 11, taked the mode of delta seal, also can utilize the oily formation hydraulic pressure of main valve hole self-locking seal, avoided the seepage of end simultaneously.In order to guarantee better sealing effect, can also comprise O type circle 13, O type circle 13 is arranged between pad 9 and end socket 11, and O type circle 13 has been played better sealing effect by top on the projection 111 of end socket 11, is more conducive to long term reliability.
When reality is used, when hydraulic fork lift is normally worked, do not need to use inching valve, now hydraulic oil is from oil-feed place oil-feed, in valve body 6, pass through, but not excessive, the slide valve spring 7 that is built in guiding valve 8 is also tightly depressed in the hole that valve body 6 bottoms and guiding valve 8 formed by hydraulic oil, simultaneously fuel-displaced from fuel-displaced place.When needs are used inching valve, by the drag link mechanism band ovable valve stem 1 of hydraulic fork lift, pulled out, valve rod spring 5 is compressed simultaneously.At valve rod 1, pull out in 2mm, also access failure of drain tap and fuel tank, the pressure at fuel-displaced place is still constant, when valve rod 1 pulls out 2-4mm, the interior hydraulic oil liquid of valve body 6 and fuel tank are connected, oil liquid pressure declines rapidly, and the slide valve spring 7 that is now built in guiding valve 8 moves guiding valve 8 because compressive force reduces to reply to drain tap.Under the acting in conjunction of drain tap and guiding valve 8 and slide valve spring 7, form a pressure balance, the drain tap size that the size of pressure is formed along with valve rod 1 pulls out and slide valve spring 7, guiding valve 8 be servo-actuated slowly decay forward, forms a fretting performance.End socket 11 is arranged on the rear end of valve body 6 inside, slide valve spring 7 is played a supporting role, the sealing effect of end face when its groove 112 and seal ring 10 have guaranteed inching valve work, anterior projection 111 adds 13 sealing effects of further consolidating end face of O type circle, has promoted sealing reliability.
More than show and described basic principle of the present utility model, major character and advantage of the present utility model.The technician of the industry should understand; the utility model is not restricted to the described embodiments; what in above-described embodiment and specification, describe is principle of the present utility model; under the prerequisite that does not depart from the utility model spirit and scope, the utility model also has various changes and modifications, and these changes and improvements all fall in claimed scope of the present utility model.The protection domain that the utility model requires is defined by appending claims and equivalent thereof.
Claims (3)
1. the end face seal structure for hydraulic fork lift gearbox inching valve, comprise guiding valve (8), valve body (6) and be sleeved on the valve rod (1) in valve body (6) by outside framework oil seal (2), on described valve rod (1), be set with front circlip (3), pad (4) and valve rod spring (5), described guiding valve (8) front end and valve rod (1) rear end are installed and are sleeved in valve body (6), described guiding valve (8) rear end suit slide valve spring (7), it is characterized in that: also comprise end socket (11), on described end socket (11), seal ring (10) is housed, the front end of end socket (11) is connected with guiding valve (8) by pad (9), the rear end of end socket (11) is spacing in valve body (6) by rear circlip (12).
2. a kind of end face seal structure for hydraulic fork lift gearbox inching valve according to claim 1, is characterized in that: also comprise O type circle (13), described O type circle (13) is arranged between pad (9) and end socket (11).
3. a kind of end face seal structure for hydraulic fork lift gearbox inching valve according to claim 1, is characterized in that: described end socket (11) is comprised of projection (111), groove (112) and support block (113) connection.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201320671724.XU CN203548967U (en) | 2013-10-29 | 2013-10-29 | End face seal structure for hydraulic forklift gearbox inching valve |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201320671724.XU CN203548967U (en) | 2013-10-29 | 2013-10-29 | End face seal structure for hydraulic forklift gearbox inching valve |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN203548967U true CN203548967U (en) | 2014-04-16 |
Family
ID=50467087
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201320671724.XU Expired - Fee Related CN203548967U (en) | 2013-10-29 | 2013-10-29 | End face seal structure for hydraulic forklift gearbox inching valve |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN203548967U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103527804A (en) * | 2013-10-29 | 2014-01-22 | 合肥今典机械科技有限公司 | End face sealing structure for hydraulic forklift speed changing box inching valve |
-
2013
- 2013-10-29 CN CN201320671724.XU patent/CN203548967U/en not_active Expired - Fee Related
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103527804A (en) * | 2013-10-29 | 2014-01-22 | 合肥今典机械科技有限公司 | End face sealing structure for hydraulic forklift speed changing box inching valve |
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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: 20140416 Termination date: 20141029 |
|
| EXPY | Termination of patent right or utility model |