CN204961445U - Make guide's type overflow valve that rises to rise fast under great load of jack - Google Patents
Make guide's type overflow valve that rises to rise fast under great load of jack Download PDFInfo
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- CN204961445U CN204961445U CN201520711838.1U CN201520711838U CN204961445U CN 204961445 U CN204961445 U CN 204961445U CN 201520711838 U CN201520711838 U CN 201520711838U CN 204961445 U CN204961445 U CN 204961445U
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- diameter end
- valve body
- jack
- smaller diameter
- larger
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Abstract
The utility model discloses a make guide's type overflow valve that rises to rise fast under great load of jack, include valve body and case, the valve body cup joints with the case is in the same place, and the upper portion of case is the minor diameter end for major diameter end, lower part, and the major diameter end coincides with the axis that the minor diameter was held each other, and the major diameter end cup joints with the valve body, and the setting of minor diameter end is provided with fluid chamber between the upper portion of minor diameter end and the valve body in the cavity of valve body, and fluid chamber passes through aperture and hydro -cylinder intercommunication. The utility model discloses it is poor that the major diameter end of case and the cross section of minor diameter end have the area, controls opening of case through the pressure of the aperture with the hydro -cylinder intercommunication, has realized that the jack rises to rise under great load fast, just keeps less handle operating physical force under the jack volume circumstances of carrying.
Description
Technical field
The utility model relates to a kind of pilot-type relief valve making fast lifting under the larger load of jack.
Background technique
At present, tradition fast relief valve can only realize fast lifting under less load, if will realize larger load fast lifting, handle is with regard to the larger steering force of needs effect, if carry situation lower handle steering force at volume can become very large, operator cannot use product.
Summary of the invention
For the problems referred to above, the utility model provides a kind of pilot-type relief valve making fast lifting under the larger load of jack, efficiently solves and carries the excessive and problem that cannot use of situation lower handle action required power at volume.
The technical solution adopted in the utility model is:
A kind of pilot-type relief valve making fast lifting under the larger load of jack, comprise valve body and spool, described valve body and valve core housing are connected together, the top of described spool is larger diameter end, and bottom is smaller diameter end, and the axis of described larger diameter end and smaller diameter end overlaps, described larger diameter end and valve body are socketed, smaller diameter end is arranged in the cavity of valve body, is provided with fluid chamber between the top of smaller diameter end and valve body, and described fluid chamber is communicated with oil cylinder by aperture.
As preferably, the upper end portion of described larger diameter end is provided with valve pocket, is provided with pressure regulating screw in described valve pocket, and described pressure regulating screw is connected with the upper end portion elasticity of larger diameter end by spring.
As preferably, between described larger diameter end and valve body, be disposed with O type circle B and nylon back-up ring B from the bottom to top.
As preferably, between described smaller diameter end and valve body, be disposed with nylon back-up ring A and O type circle A from the bottom to top.
O type circle B, nylon back-up ring B, O type circle A and nylon back-up ring A make the sealing effect of valve body better.
As preferably, be provided with steel ball between the bottom of the smaller diameter end of described spool and valve body, be provided with oil pocket between the lower end of the smaller diameter end of described spool and valve body, described oil pocket is communicated with fuel tank by oilhole.
The larger diameter end of the utility model spool and the cross section of smaller diameter end have difference in areas, the unlatching of spool is controlled by the pressure of the aperture be communicated with oil cylinder, achieve jack fast lifting under larger load, and under jack volume carries situation, keep less lever operated power.
Accompanying drawing explanation
Fig. 1 is structural representation of the present utility model;
In figure: 1. valve body, 2. spool, 3. larger diameter end, 4. smaller diameter end, 5. fluid chamber, 6. aperture, 7. valve pocket, 8. pressure regulating screw, 9. spring, 10.O type circle B, 11. nylon back-up ring B, 12. nylon back-up ring A, 13.O type circle A, 14. steel balls, 15. oilholes, 16. oil pockets.
Embodiment
Also by reference to the accompanying drawings the utility model is described in further detail below by specific embodiment.
Embodiment 1
As shown in Figure 1, a kind of pilot-type relief valve making fast lifting under the larger load of jack, comprise valve body 1 and spool 2, valve body 1 and spool 2 connect together, the top of spool 2 is larger diameter end 3, bottom is smaller diameter end 4, larger diameter end 3 overlaps with the axis of smaller diameter end 4, larger diameter end 3 and valve body 1 are socketed, the upper end portion of larger diameter end 3 is provided with valve pocket 7, pressure regulating screw 8 is provided with in valve pocket 7, pressure regulating screw 8 is connected with the upper end portion elasticity of larger diameter end 3 by spring 9, O type circle B10 and nylon back-up ring B11 is disposed with from the bottom to top between larger diameter end 3 and valve body 1, smaller diameter end 4 is arranged in the cavity of valve body 1, fluid chamber 5 is provided with between the top of smaller diameter end 4 and valve body 1, fluid chamber 5 is communicated with oil cylinder by aperture 6, nylon back-up ring A12 and O type circle A13 is disposed with from the bottom to top between smaller diameter end 4 and valve body 1, steel ball 14 is provided with between the bottom of the smaller diameter end 4 of spool 2 and valve body 1, oil pocket 16 is provided with between the lower end of the smaller diameter end 4 of spool 2 and valve body 1, oil pocket 16 is communicated with fuel tank by oilhole 15.
The larger diameter end 3 of the utility model spool 2 has difference in areas with the cross section of smaller diameter end 4, the unlatching of spool 2 is controlled by the pressure of the aperture 6 be communicated with oil cylinder, achieve jack fast lifting under larger load, and under jack volume carries situation, keep less lever operated power.
Above-described embodiment is to explanation of the present utility model, is not to restriction of the present utility model, anyly all belongs to protection domain of the present utility model to the scheme after the utility model simple transformation.
Claims (5)
1. one kind makes the pilot-type relief valve of fast lifting under the larger load of jack, comprise valve body (1) and spool (2), described valve body (1) and spool (2) connect together, it is characterized in that, the top of described spool (2) is larger diameter end (3), bottom is smaller diameter end (4), described larger diameter end (3) overlaps with the axis of smaller diameter end (4), described larger diameter end (3) and valve body (1) are socketed, smaller diameter end (4) is arranged in the cavity of valve body (1), fluid chamber (5) is provided with between the top of smaller diameter end (4) and valve body (1), described fluid chamber (5) is communicated with oil cylinder by aperture (6).
2. a kind of pilot-type relief valve making fast lifting under the larger load of jack according to claim 1, it is characterized in that, the upper end portion of described larger diameter end (3) is provided with valve pocket (7), be provided with pressure regulating screw (8) in described valve pocket (7), described pressure regulating screw (8) is connected by the upper end portion elasticity of spring (9) with larger diameter end (3).
3. a kind of pilot-type relief valve making fast lifting under the larger load of jack according to claim 1 and 2, it is characterized in that, between described larger diameter end (3) and valve body (1), be disposed with O type circle B(10 from the bottom to top) and nylon back-up ring B(11).
4. a kind of pilot-type relief valve making fast lifting under the larger load of jack according to claim 3, it is characterized in that, between described smaller diameter end (4) and valve body (1), be disposed with nylon back-up ring A(12 from the bottom to top) and O type circle A(13).
5. a kind of pilot-type relief valve making jack fast lifting under larger load according to claim 4, it is characterized in that, steel ball (14) is provided with between the bottom of the smaller diameter end (4) of described spool (2) and valve body (1), be provided with oil pocket (16) between the lower end of the smaller diameter end (4) of described spool (2) and valve body (1), described oil pocket (16) is communicated with fuel tank by oilhole (15).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520711838.1U CN204961445U (en) | 2015-09-15 | 2015-09-15 | Make guide's type overflow valve that rises to rise fast under great load of jack |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520711838.1U CN204961445U (en) | 2015-09-15 | 2015-09-15 | Make guide's type overflow valve that rises to rise fast under great load of jack |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN204961445U true CN204961445U (en) | 2016-01-13 |
Family
ID=55056515
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201520711838.1U Active CN204961445U (en) | 2015-09-15 | 2015-09-15 | Make guide's type overflow valve that rises to rise fast under great load of jack |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN204961445U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN115750902A (en) * | 2022-11-29 | 2023-03-07 | 富阳通力机械制造有限公司 | Two-dimensional electro-hydraulic proportional valve manual unloading structure for quick self-locking jack |
-
2015
- 2015-09-15 CN CN201520711838.1U patent/CN204961445U/en active Active
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN115750902A (en) * | 2022-11-29 | 2023-03-07 | 富阳通力机械制造有限公司 | Two-dimensional electro-hydraulic proportional valve manual unloading structure for quick self-locking jack |
| CN115750902B (en) * | 2022-11-29 | 2023-06-09 | 富阳通力机械制造有限公司 | Two-dimensional electro-hydraulic proportional valve manual unloading structure for quick self-locking jack |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant |