CN202520699U - Retraction type hydraulic cylinder - Google Patents
Retraction type hydraulic cylinder Download PDFInfo
- Publication number
- CN202520699U CN202520699U CN201220177403XU CN201220177403U CN202520699U CN 202520699 U CN202520699 U CN 202520699U CN 201220177403X U CN201220177403X U CN 201220177403XU CN 201220177403 U CN201220177403 U CN 201220177403U CN 202520699 U CN202520699 U CN 202520699U
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- cylinder body
- boss
- inner cylinder
- outer cylinder
- main shaft
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- Expired - Fee Related
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Abstract
The utility model relates to the technical field of hydraulic cylinders, and in particular relates to a retraction type hydraulic cylinder. The retraction type hydraulic cylinder comprises an outer cylinder body, an inner cylinder body and a main shaft body, wherein a first oil inlet hole is formed at the bottom of the outer cylinder body; an annular groove communicated with the first oil inlet hole is formed on the inner side at the bottom of the outer cylinder body; a first lug of which the inner diameter is greater than that of the annular groove is arranged on the inner side of the upper part of the outer cylinder body; the upper part of the inner cylinder body is sleeved on the first lug; a second lug is arranged on the outer side of the lower part of the inner cylinder body and can be sleeved on the inner wall of the outer cylinder body to move up and down; a third lug is arranged on the inner side of the lower part of the inner cylinder body; the outer diameter of the third lug is greater than the inner diameter of the annular groove; and the lower end of the third lug extends downwards to the lower side of the inner cylinder body and is positioned on the bottom wall of the outer cylinder outside the annular groove. The retraction type hydraulic cylinder has a reasonable structure and is convenient to use; and moreover, the main shaft and the inner cylinder body can move up and down by the matching of the outer cylinder body, the inner cylinder body, the main shaft body and a compression spring as well as controlling the hydraulic oil, so that the working efficiency is improved.
Description
Technical field
The utility model relates to the oil hydraulic cylinder technical field, is a kind of retraction type oil hydraulic cylinder.
Background technique
As everyone knows, after the piston of conventional oil hydraulic cylinder stretches out, can not realize initiatively withdrawal, must reduce the pressure of oil hydraulic cylinder, flow refluxes, and therefore exists working procedure loaded down with trivial details, expends time in long and causes inefficient problem.
Summary of the invention
The utility model provides a kind of retraction type oil hydraulic cylinder, has overcome the deficiency of above-mentioned existing technology, and it is loaded down with trivial details that it can solve existing hydraulic cylinder works process, expends time in long and causes inefficient problem.
The technological scheme of the utility model realizes like this: a kind of retraction type oil hydraulic cylinder comprises outer cylinder body, inner cylinder body and main shaft; In the bottom of outer cylinder body first oil inlet hole is arranged, the annular groove that communicates with first oil inlet hole is arranged, first boss of internal diameter greater than the annular groove internal diameter arranged in the upper inner of outer cylinder body in the bottom inside of outer cylinder body; The top of inner cylinder body is sleeved on first boss; There are second boss, second boss to be sleeved on the outer cylinder body inwall in the outside, the bottom of inner cylinder body and can move up and down, the 3rd boss is arranged in the lower inside of inner cylinder body; The external diameter of the 3rd boss is greater than the internal diameter of annular groove; The lower ends downward of the 3rd boss extend out to the below of inner cylinder body and is sitting on the outer cylinder body diapire in the annular groove outside, in the upper inner of inner cylinder body internal diameter and corresponding the 4th boss of the 3rd boss internal diameter is arranged, and the upper and lower of main shaft is set on the 4th boss and the 3rd boss and can moves up and down; The 5th boss is arranged at the middle part of main shaft and be sleeved on the middle part of inner cylinder body; Between the 5th boss and the 3rd boss, cavity is arranged, in cavity, have to be sleeved on the main shaft and to be the pressure spring that compresses shape, second oil inlet hole is arranged on inner cylinder body; The bottom of second oil inlet hole communicates with the cavity in the 3rd boss outside; The cavity of the top of second oil inlet hole and the 5th boss top communicates, have on the outer cylinder body with first boss and second boss between the 3rd oil inlet hole that communicates of cavity, the exhaust passage is arranged on inner cylinder body; One end of exhaust passage communicates with cavity, and the other end of exhaust passage communicates with the external world.
More than seal ring is installed between the top of first boss and inner cylinder body.
More than seal ring is installed between second boss and the outer cylinder body inwall.
The upper and lower of above main shaft is equipped with seal ring respectively and between the 4th boss and the 3rd boss.
More than seal ring is installed between the middle part of the 5th boss and inner cylinder body.
The utility model is rational in infrastructure, and is easy to use, through being used of outer cylinder body, inner cylinder body and main shaft and pressure spring, and through control hydraulic oil, main shaft and inner cylinder body being moved up and down, thereby greatly improved working efficiency.
Description of drawings
Fig. 1 is the main TV structure figure of the utility model.
Coding among the figure is respectively: 1 is outer cylinder body, and 2 is inner cylinder body, and 3 is main shaft, and 4 is first oil inlet hole; 5 is annular groove, and 6 is first boss, and 7 is second boss, and 8 is the 3rd boss; 9 is the 4th boss, and 10 is the 5th boss, and 11 is cavity, and 12 is pressure spring; 13 is second oil inlet hole, and 14 is the 3rd oil inlet hole, and 15 is the exhaust passage, and 16 is seal ring.
Embodiment
As shown in Figure 1, a kind of retraction type oil hydraulic cylinder comprises outer cylinder body 1, inner cylinder body 2 and main shaft 3; First oil inlet hole 4 is arranged in the bottom of outer cylinder body 1, the annular groove 5 that communicates with first oil inlet hole 4 is arranged, first boss 6 of internal diameter greater than annular groove 5 internal diameters arranged in the upper inner of outer cylinder body 1 in the bottom inside of outer cylinder body 1; The top of inner cylinder body 2 is sleeved on first boss 6; There are second boss, 7, the second boss 7 to be sleeved on outer cylinder body 1 inwall in the outside, the bottom of inner cylinder body 2 and can move up and down, the 3rd boss 8 is arranged in the lower inside of inner cylinder body 2; The external diameter of the 3rd boss 8 is greater than the internal diameter of annular groove 5; The lower ends downward of the 3rd boss 8 extend out to the below of inner cylinder body 2 and is sitting on outer cylinder body 1 diapire in annular groove 5 outsides, in the upper inner of inner cylinder body 2 internal diameter and corresponding the 4th boss 9 of the 3rd boss 8 internal diameters is arranged, and the upper and lower of main shaft 3 is set on the 4th boss 9 and the 3rd boss 8 and can moves up and down; The 5th boss 10 is arranged at the middle part of main shaft 3 and be sleeved on the middle part of inner cylinder body 2; Between the 5th boss 10 and the 3rd boss 8, cavity 11 is arranged, in cavity 11, have to be sleeved on the main shaft 3 and to be the pressure spring 12 that compresses shape, second oil inlet hole 13 is arranged on inner cylinder body 2; The bottom of second oil inlet hole 13 communicates with the cavity in the 3rd boss 8 outsides; The top of second oil inlet hole 13 communicates with the cavity of the 5th boss 10 tops, have on the outer cylinder body 1 with first boss 6 and second boss 7 between the 3rd oil inlet hole 14 that communicates of cavity, exhaust passage 15 is arranged on inner cylinder body 2; One end of exhaust passage 15 communicates with cavity 11, and the other end of exhaust passage 15 communicates with the external world.
As shown in Figure 1, in order to increase sealability,, between the top of first boss 6 and inner cylinder body 2 seal ring 16 is installed as preferably; Between second boss 7 and outer cylinder body 1 inwall seal ring 16 is installed; The upper and lower of main shaft 3 is equipped with seal ring 16 respectively and between the 4th boss 9 and the 3rd boss 8; Between the middle part of the 5th boss 10 and inner cylinder body 2 seal ring 16 is installed.
Claims (9)
1. a retraction type oil hydraulic cylinder is characterized in that comprising outer cylinder body (1), inner cylinder body (2) and main shaft (3); In the bottom of outer cylinder body (1) first oil inlet hole (4) is arranged; Bottom inside at outer cylinder body (1) has the annular groove (5) that communicates with first oil inlet hole (4); Upper inner at outer cylinder body (1) has first boss (6) of internal diameter greater than annular groove (5) internal diameter, and the top of inner cylinder body (2) is sleeved on first boss (6), in the outside, bottom of inner cylinder body (2) second boss (7) is arranged; Second boss (7) is sleeved on outer cylinder body (1) inwall and can moves up and down; Lower inside at inner cylinder body (2) has the 3rd boss (8), and the external diameter of the 3rd boss (8) is greater than the internal diameter of annular groove (5), and the lower ends downward of the 3rd boss (8) extend out to the below of inner cylinder body (2) and is sitting on outer cylinder body (1) diapire in annular groove (5) outside; Upper inner at inner cylinder body (2) has internal diameter and corresponding the 4th boss of the 3rd boss (8) internal diameter (9); The upper and lower of main shaft (3) is set in the 4th boss (9) and the 3rd boss (8) and goes up and can move up and down, and the 5th boss (10) is arranged at the middle part of main shaft (3) and be sleeved on the middle part of inner cylinder body (2), between the 5th boss (10) and the 3rd boss (8), cavity (11) is arranged; In cavity (11), have and be sleeved on main shaft (3) and go up and be the pressure spring (12) that compresses shape; Second oil inlet hole (13) is arranged on inner cylinder body (2), and the bottom of second oil inlet hole (13) communicates with the cavity in the 3rd boss (8) outside, and the top of second oil inlet hole (13) communicates with the cavity of the 5th boss (10) top; Have on the outer cylinder body (1) with first boss (6) and second boss (7) between the 3rd oil inlet hole (14) that communicates of cavity; Exhaust passage (15) is arranged on inner cylinder body (2), and an end of exhaust passage (15) communicates with cavity (11), and the other end of exhaust passage (15) communicates with the external world.
2. retraction type oil hydraulic cylinder according to claim 1 is characterized in that between the top of first boss (6) and inner cylinder body (2) seal ring (16) being installed.
3. retraction type oil hydraulic cylinder according to claim 1 and 2 is characterized in that between second boss (7) and outer cylinder body (1) inwall seal ring (16) being installed.
4. retraction type oil hydraulic cylinder according to claim 1 and 2 is characterized in that the upper and lower of main shaft (3) is equipped with seal ring (16) respectively and between the 4th boss (9) and the 3rd boss (8).
5. retraction type oil hydraulic cylinder according to claim 3 is characterized in that the upper and lower of main shaft (3) is equipped with seal ring (16) respectively and between the 4th boss (9) and the 3rd boss (8).
6. retraction type oil hydraulic cylinder according to claim 1 and 2 is characterized in that between the middle part of the 5th boss (10) and inner cylinder body (2) seal ring (16) being installed.
7. retraction type oil hydraulic cylinder according to claim 3 is characterized in that between the middle part of the 5th boss (10) and inner cylinder body (2) seal ring (16) being installed.
8. retraction type oil hydraulic cylinder according to claim 4 is characterized in that between the middle part of the 5th boss (10) and inner cylinder body (2) seal ring (16) being installed.
9. retraction type oil hydraulic cylinder according to claim 5 is characterized in that between the middle part of the 5th boss (10) and inner cylinder body (2) seal ring (16) being installed.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201220177403XU CN202520699U (en) | 2012-04-11 | 2012-04-11 | Retraction type hydraulic cylinder |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201220177403XU CN202520699U (en) | 2012-04-11 | 2012-04-11 | Retraction type hydraulic cylinder |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN202520699U true CN202520699U (en) | 2012-11-07 |
Family
ID=47103651
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201220177403XU Expired - Fee Related CN202520699U (en) | 2012-04-11 | 2012-04-11 | Retraction type hydraulic cylinder |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN202520699U (en) |
-
2012
- 2012-04-11 CN CN201220177403XU patent/CN202520699U/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 | ||
| C17 | Cessation of patent right | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20121107 Termination date: 20130411 |