CN202579438U - Single-action lifting secondary oil cylinder - Google Patents
Single-action lifting secondary oil cylinder Download PDFInfo
- Publication number
- CN202579438U CN202579438U CN 201220243656 CN201220243656U CN202579438U CN 202579438 U CN202579438 U CN 202579438U CN 201220243656 CN201220243656 CN 201220243656 CN 201220243656 U CN201220243656 U CN 201220243656U CN 202579438 U CN202579438 U CN 202579438U
- Authority
- CN
- China
- Prior art keywords
- piston rod
- oil cylinder
- cylinder body
- piston bar
- drain plug
- Prior art date
- 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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- Actuator (AREA)
- Pit Excavations, Shoring, Fill Or Stabilisation Of Slopes (AREA)
Abstract
The utility model discloses a single-action lifting secondary oil cylinder, which mainly comprises a small piston rod (2), a large piston rod (3) and a cylinder body (4), wherein a rear drain plug (1) is arranged at the right end of the cylinder body (4), a front drain plug (5) and a front plate (6) are arranged at the left end of the cylinder body (4), and the large piston rod (3) is arranged inside the cylinder body (4); the hollow inside of the large piston rod (3) is provided with the small piston rod (2); a sleeve (7) is arranged inside the left end of the large piston rod (3); the front plate (6) and the rear drain plug (1) are fastened integrally through four pull rods (8); the pipe wall of the large piston rod (3) is internally provided with two long oil holes that can be communicated with inner and outer cavities; the rear drain plug (1) is provided with an oil port; and the front drain plug (5) is also provided with an oil port. The single-action lifting secondary oil cylinder disclosed by the utility model has the advantages that exposed oil ports and leak points are few, and is simple in structure and convenient for installation.
Description
Technical field
The utility model is mainly used in hydraulic system, a kind of single-acting up-down two-level oil cylinder.
Background technique
In hydraulic system, two-level oil cylinder is one of common hydraulic unit.Therefore yet traditional two-level oil cylinder all has return line on each grade oil cylinder, makes complex structure, and it is many to expose hydraulic fluid port, and the leak point is many, inconvenient installation.
The purpose of the utility model is that to expose hydraulic fluid port few in order to overcome the deficiency that traditional two-level oil cylinder exists, therefore to have designed, and the leak point is few, simple in structure, easy for installation a kind of single-acting up-down two-level oil cylinder.
Summary of the invention
Single-acting up-down two-level oil cylinder; Mainly be made up of small piston rod 2, big piston bar 3,4 of cylinder bodies, it is stifled 1 that the back is housed in cylinder body 4 right parts, before be equipped with the left part stifled 5 with header board 6; Be provided with big piston bar 3 in the inside of cylinder body 4; Hollow interior at big piston bar 3 is provided with small piston rod 2, and cover 7 is housed in the left end inside of big piston bar 3, and header board 6 is tightened to one with back stifled 1 through four pull bars 8.Be provided with the long oil hole that twice can communicate with inside and outside chamber in the tube wall inside of big piston bar 3.On back stifled 1, be provided with hydraulic fluid port.On preceding stifled 5, also be provided with hydraulic fluid port.
The beneficial effect of the utility model is: it is few to expose hydraulic fluid port, and the leak point is few, simple in structure, easy for installation.
Description of drawings
Fig. 1 is the main TV structure sectional view of the utility model;
Fig. 2 is the left TV structure sectional view of the utility model.
In the accompanying drawing: 1, the back is stifled; 2, small piston rod; 3, big piston bar; 4, cylinder body; 5, preceding stifled; 6, header board; 7, cover, 8, pull bar.
Embodiment
Single-acting up-down two-level oil cylinder implements not difficultly, and except piston ring and seal ring, the processing of other part all is conventional machining.Relatively difficulty any be the deep hole processing on the big piston bar 3, if cylinder body is longer on demand, also can big piston bar 3 be divided into several sections, process butt welding again behind the oilhole, other is processed just than being easier to.Each part processing is good and configure Sealing and just can assemble, be tightened to one with four screwed pull bars 8 in two ends through header board 6 and Kong Houyong nut on the back stifled 1 at last.
During work, hydraulic oil stretches out from the inner chamber promotion small piston rod 2 that the hydraulic fluid port on the back stifled 1 gets into big piston bar 3, when the piston on the small piston rod 2 contacts with cover 7, starts drag big piston bar 3 and stretches out, and hydraulic oil begins to promote the piston-advance on the big piston bar 3 simultaneously.When needs are regained piston rod; Hydraulic fluid port on the back stifled 1 is become drain tap; At this moment; Hydraulic fluid port on the hydraulic oil stifled in the past 5 gets in the cavity between cylinder body 4 and the big piston bar 3 and promotes big piston bar 3 and resets, and after big piston bar 3 was got back to original position, hydraulic oil entered into the inner chamber body of big piston bar 3 and promotes piston rod 2 from the long oil hole on the big piston bar 3 and resets.
Claims (4)
1. single-acting up-down two-level oil cylinder; Mainly form, it is characterized in that back stifled (1) being housed, block up (5) and header board (6) before be equipped with the left part in cylinder body (4) right part by small piston rod (2), big piston bar (3), cylinder body (4); Be provided with big piston bar (3) in the inside of cylinder body (4); Hollow interior at big piston bar (3) is provided with small piston rod (2), in the left end inside of big piston bar (3) cover (7) is housed, and header board (6) and back stifled (1) are tightened to one through four pull bars (8).
2. single-acting up-down as claimed in claim 1 two-level oil cylinder is characterized in that said tube wall inside at big piston bar (3) is provided with the long oil hole that twice can communicate with inside and outside chamber.
3. single-acting up-down as claimed in claim 1 two-level oil cylinder is characterized in that said back stifled (1) is provided with hydraulic fluid port.
4. single-acting up-down as claimed in claim 1 two-level oil cylinder is characterized in that also being provided with hydraulic fluid port on stifled (5) before said.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201220243656 CN202579438U (en) | 2012-05-29 | 2012-05-29 | Single-action lifting secondary oil cylinder |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201220243656 CN202579438U (en) | 2012-05-29 | 2012-05-29 | Single-action lifting secondary oil cylinder |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN202579438U true CN202579438U (en) | 2012-12-05 |
Family
ID=47248854
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 201220243656 Expired - Fee Related CN202579438U (en) | 2012-05-29 | 2012-05-29 | Single-action lifting secondary oil cylinder |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN202579438U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106640840A (en) * | 2017-01-22 | 2017-05-10 | 重庆市巴山液压附件厂有限公司 | Two-stage double-acting lifting hydraulic oil cylinder used on scout car |
-
2012
- 2012-05-29 CN CN 201220243656 patent/CN202579438U/en not_active Expired - Fee Related
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106640840A (en) * | 2017-01-22 | 2017-05-10 | 重庆市巴山液压附件厂有限公司 | Two-stage double-acting lifting hydraulic oil cylinder used on scout car |
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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: 20121205 Termination date: 20170529 |
|
| CF01 | Termination of patent right due to non-payment of annual fee |