CN204533034U - A kind of double-deck oil cylinder - Google Patents
A kind of double-deck oil cylinder Download PDFInfo
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- CN204533034U CN204533034U CN201520084709.4U CN201520084709U CN204533034U CN 204533034 U CN204533034 U CN 204533034U CN 201520084709 U CN201520084709 U CN 201520084709U CN 204533034 U CN204533034 U CN 204533034U
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- cylinder body
- internal layer
- piston rod
- double
- cylinder
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Abstract
The utility model discloses a kind of double-deck oil cylinder, comprise cylinder body and piston rod, described piston rod one end connects piston, the other end stretches out described cylinder body, it is characterized in that: described cylinder body is divided into internal layer cylinder body and outer cylinder block, described piston and described piston rod are located in described internal layer cylinder body, and described outer cylinder block is communicated with by oil inlet valve with described internal layer cylinder body, and described outer cylinder block and described internal layer cylinder body are integral type.The technical program can solve the negative pressure problem of the oil cylinder of piston rod portion, and structure is simple, good integrity.
Description
Technical field
The utility model relates to construction machinery production technical field, especially relates to a kind of double-deck oil cylinder.
Background technique
In hydraulic-mechanic system, oil cylinder is the performance element of the mechanical energy pressure of fluid oil being changed into piston.In the reciprocating process of piston rod, oil cylinder is used for the interior meeting of cavity of accommodating piston rod because the deficiency of repairing cause producing negative pressure in chamber.Negative pressure not only can cause entering air in hydraulic jack, thus has influence on the normal operation of piston, piston rod, also can cause scuffing of cylinder bore fault.In the prior art, solution for negative pressure problem in hydraulic jack, increases by one force Fill valve to solve, but this kind of method can increase the complexity of the mechanical structure of hydraulic system, and the cost of product can be made to increase substantially, reduce the performance of product.In addition, the through hole with fuel tank is offered in addition on the surface of oil cylinder, guarantee fuel feeding timely, on the one hand, the air under negative pressure state can enter into fuel tank, causes the reduction of oil cylinder overall performance, on the other hand, in the process of oil cylinder working-pressure acting, can extrude the parts at through hole position, reduce the robustness of oil cylinder.
Summary of the invention
In view of the defect that above-mentioned prior art exists, the purpose of this utility model proposes a kind of double-deck oil cylinder.
The purpose of this utility model will be achieved by the following technical programs: a kind of double-deck oil cylinder, comprise cylinder body and piston rod, described piston rod one end connects piston, the other end stretches out described cylinder body: described cylinder body is divided into internal layer cylinder body and outer cylinder block, described piston and described piston rod are located in described internal layer cylinder body, described outer cylinder block is communicated with by oil inlet valve with described internal layer cylinder body, and described outer cylinder block and described internal layer cylinder body are integral type.
Preferably, the double-deck oil cylinder of above-mentioned one: described piston rod is connected with described internal layer cylinder body seal.
Preferably, the double-deck oil cylinder of above-mentioned one: described oil inlet valve is unidirectional oil inlet valve.
Preferably, the double-deck oil cylinder of above-mentioned one: described internal layer cylinder body is provided with through hole, and described unidirectional oil inlet valve is located in described through hole.
Preferably, the double-deck oil cylinder of above-mentioned one: described internal layer cylinder body is equal with the height of described outer cylinder block.
Outstanding effect of the present utility model is: the relation that oil cylinder cooperatively interacts enables internal layer oil cylinder receive the hydraulic oil of outer oil cylinder and fuel tank simultaneously, and the supply of hydraulic oil is sufficient, and oil cylinder runnability improves; 2) internal layer oil cylinder is communicated with outer oil cylinder by one-way cock, can push one-way cock open when the hydraulic oil in internal layer oil cylinder is negative pressure by the effect of pressure, is internal layer oil cylinder fuel feeding; 3) internal layer oil cylinder and outer oil cylinder are integral type structure, make the overall sealing performance of oil cylinder good, can not cause the structure such as leakage corrosion piston, piston rod etc. of air.
Below just accompanying drawing in conjunction with the embodiments, is described in further detail embodiment of the present utility model, is easier to understand, grasp to make technical solutions of the utility model.
Accompanying drawing explanation
Fig. 1 is the structural representation of a kind of double-deck oil cylinder shown in the present embodiment.
Embodiment
As shown in Figure 1, the double-deck oil cylinder of one of the present embodiment, comprise cylinder body 1 and piston rod 2, piston rod 2 does iterative motion for promoting piston 3, changes hydraulic energy into mechanical energy, and one end of piston rod 2 connects piston 3, and the other end stretches out cylinder body 1.Wherein, cylinder body 1 is divided into internal layer cylinder body 11 and outer cylinder block 12, and piston 3 and piston rod 2 are located in internal layer cylinder body 11.Outer cylinder block 12 is communicated with by unidirectional oil inlet valve 4 with internal layer cylinder body 11, and internal layer cylinder body 11 is provided with through hole, is arranged in through hole at unidirectional oil inlet valve 4.Outer cylinder block 12 and internal layer cylinder body 11 are integral type structure.Piston rod 2 and internal layer cylinder body 11 are tightly connected.In order to ensure the requirement of sealing, internal layer cylinder body 11 is equal with the height of outer cylinder block 12, and welds together between the two.Outer cylinder block 12 is communicated with fuel tank.
The utility model still has numerous embodiments, all employing equivalents or equivalent transformation and all technological schemes formed, and all drops within protection domain of the present utility model.
Claims (5)
1. a double-deck oil cylinder, comprise cylinder body and piston rod, described piston rod one end connects piston, the other end stretches out described cylinder body, it is characterized in that: described cylinder body is divided into internal layer cylinder body and outer cylinder block, described piston and described piston rod are located in described internal layer cylinder body, and described outer cylinder block is communicated with by oil inlet valve with described internal layer cylinder body, and described outer cylinder block and described internal layer cylinder body are integral type.
2. the double-deck oil cylinder of one according to claim 1, is characterized in that: described piston rod is connected with described internal layer cylinder body seal.
3. the double-deck oil cylinder of one according to claim 1, is characterized in that: described oil inlet valve is unidirectional oil inlet valve.
4. the double-deck oil cylinder of one according to claim 3, is characterized in that: described internal layer cylinder body is provided with through hole, and described unidirectional oil inlet valve is located in described through hole.
5. the double-deck oil cylinder of one according to claim 1, is characterized in that: described internal layer cylinder body is equal with the height of described outer cylinder block.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520084709.4U CN204533034U (en) | 2015-02-06 | 2015-02-06 | A kind of double-deck oil cylinder |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520084709.4U CN204533034U (en) | 2015-02-06 | 2015-02-06 | A kind of double-deck oil cylinder |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN204533034U true CN204533034U (en) | 2015-08-05 |
Family
ID=53747043
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201520084709.4U Expired - Fee Related CN204533034U (en) | 2015-02-06 | 2015-02-06 | A kind of double-deck oil cylinder |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN204533034U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104675795A (en) * | 2015-02-06 | 2015-06-03 | 成都佳美嘉科技有限公司 | Double-layer oil cylinder |
-
2015
- 2015-02-06 CN CN201520084709.4U patent/CN204533034U/en not_active Expired - Fee Related
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104675795A (en) * | 2015-02-06 | 2015-06-03 | 成都佳美嘉科技有限公司 | Double-layer oil cylinder |
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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: 20150805 Termination date: 20160206 |
|
| CF01 | Termination of patent right due to non-payment of annual fee |