CN203453174U - Hollow piston rod type hydraulic cylinder - Google Patents
Hollow piston rod type hydraulic cylinder Download PDFInfo
- Publication number
- CN203453174U CN203453174U CN201320465735.2U CN201320465735U CN203453174U CN 203453174 U CN203453174 U CN 203453174U CN 201320465735 U CN201320465735 U CN 201320465735U CN 203453174 U CN203453174 U CN 203453174U
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- Prior art keywords
- piston rod
- oil
- hydraulic cylinder
- chamber
- cylinder body
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- Expired - Fee Related
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- 239000003921 oil Substances 0.000 claims abstract description 85
- 239000010720 hydraulic oil Substances 0.000 claims abstract description 8
- 229910000831 Steel Inorganic materials 0.000 claims description 3
- 239000010959 steel Substances 0.000 claims description 3
- 230000005540 biological transmission Effects 0.000 description 2
- 238000000034 method Methods 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000006243 chemical reaction Methods 0.000 description 1
- 230000007812 deficiency Effects 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 239000012530 fluid Substances 0.000 description 1
- 230000003068 static effect Effects 0.000 description 1
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Abstract
The utility model relates to a hollow piston rod type hydraulic cylinder which mainly comprises a hydraulic cylinder body and a piston rod matched with the hydraulic cylinder body. The hydraulic cylinder body comprises a cylinder cover and a hollow cylinder main body, the piston rod is arranged in the hydraulic cylinder body in a matched mode, and an inner cavity of the hydraulic cylinder body is divided by a piston head on the piston rod into an oil inlet chamber and an oil return chamber; the piston rod is a hollow piston rod, an inner cavity of the piston rod is an oil return cavity, an oil inlet pipe is arranged in the axial direction of the oil return cavity, and hydraulic oil flows into the oil inlet chamber in the hydraulic cylinder body through the oil inlet pipe; an oil outlet is further formed in the piston rod and is aligned with the oil return chamber of the hydraulic cylinder body to enable the oil return chamber to be communicated with the oil return cavity. By means of the mode, the hollow piston rod type hydraulic cylinder is provided, the oil inlet pipe and an oil outlet pipe for the hydraulic oil are arranged on the piston rod to enable the piston rod to be replaced by the cylinder main body of the hydraulic cylinder body to bear force, and the bearing capacity is greatly improved.
Description
Technical field
The utility model relates to piston type bar cylinder design and manufactures field, particularly relates to a kind of hollow piston rod-type oil hydraulic cylinder.
Background technique
?piston rod type oil hydraulic cylinder has higher service behaviour, therefore applies to widely in hydraulic power transmission field.Piston rod type oil hydraulic cylinder can be divided into according to the number classification of its piston rod: single-piston rod formula oil hydraulic cylinder and double-piston rod-type oil hydraulic cylinder.The supporting piston rod of common oil hydraulic cylinder, is to arrange into and out of hydraulic fluid port on oil hydraulic cylinder, thereby promotes piston rod movement, but because piston rod is conventionally thinner, when piston rod acts on beaer, its bearing capacity, with regard to relative deficiency, is difficult to realize the needs of transmission.
Model utility content
The technical problem that the utility model mainly solves is to provide a kind of hollow piston rod-type oil hydraulic cylinder, and it is reasonable in design, simple in structure, can realize hydraulic cylinder and replace piston rod to bear pressure.
For solving the problems of the technologies described above, the technological scheme that the utility model adopts is to provide a kind of hollow piston rod-type oil hydraulic cylinder, and it mainly comprises: oil hydraulic cylinder and the piston rod supporting with it; Described oil hydraulic cylinder comprises the cylinder body of cylinder cap and hollow, and piston rod is matched with in described oil hydraulic cylinder, and the piston head on piston rod is divided into inlet space and oil revolute chamber by the inner chamber of oil hydraulic cylinder; Described piston rod is hollow piston rod, and its internal cavities is oil back chamber, and the axial of oil back chamber is provided with oil inlet pipe, and hydraulic oil flows in the inlet space in oil hydraulic cylinder by oil inlet pipe; On piston rod, be also provided with oil outlet, the ，Jiang oil revolute chamber of oil revolute chamber that described oil outlet is aimed at oil hydraulic cylinder is communicated with oil back chamber.
Preferably, described piston rod is made by seamless steel pipe.
The beneficial effects of the utility model are: a kind of hollow piston rod-type oil hydraulic cylinder is provided, by hydraulic oil into and out of install pipeline on piston rod, make hydraulic cylinder body replace piston rod stressed, ability to bear is increased substantially.
Accompanying drawing explanation
Fig. 1 is the structural representation of a kind of hollow piston rod-type of the utility model oil hydraulic cylinder;
Fig. 2 is the structural representation of this hollow piston rod
In accompanying drawing, the mark of each parts is as follows: 1, oil hydraulic cylinder; 2, piston rod; 3, cylinder cap; 4, inlet space; 5, piston head; 6, inlet space; 7, oil revolute chamber; 8, oil back chamber; 9, oil inlet pipe; 10, oil outlet.
Embodiment
Below in conjunction with accompanying drawing, preferred embodiment of the present utility model is described in detail, thereby so that advantage of the present utility model and feature can be easier to be it will be appreciated by those skilled in the art that, protection domain of the present utility model is made to more explicit defining.
Refer to accompanying drawing 1 and Fig. 2, the utility model is embodiment comprise:
A hollow piston rod-type oil hydraulic cylinder, it mainly comprises: oil hydraulic cylinder 1 and the piston rod 2 supporting with it; Described oil hydraulic cylinder 1 comprises the cylinder body 4 of cylinder cap 3 and hollow, and 2, piston rod is matched with in described oil hydraulic cylinder 1, and the piston head 5 on piston rod 2 is divided into inlet space 4 and oil revolute chamber 7 by the inner chamber of oil hydraulic cylinder 1; Described piston rod 2 is hollow piston rod, and its internal cavities is oil back chamber 8, and the axial oil inlet pipe 9 that is provided with of oil back chamber 8, in the inlet space 6 that hydraulic oil flows in oil hydraulic cylinders 1 by oil inlet pipe 9; On piston rod 2, be also provided with oil outlet 10, the 7 ，Jiang oil revolute chamber 7 of oil revolute chamber that described oil outlet 10 is aimed at oil hydraulic cylinder 1 are communicated with oil back chamber 8.Wherein said piston rod 2 is made by seamless steel pipe.As Fig. 1, the oil inlet pipe 9 in the present embodiment, for being provided with two oil-feed branch roads, can be increased work efficiency.
The utility model provides a kind of hollow piston rod-type oil hydraulic cylinder, by hydraulic oil into and out of install pipeline on piston rod, hydraulic oil enters into the inlet space of oil hydraulic cylinder by the oil circuit in piston rod, now piston rod maintains static hydraulic cylinder, reach hydraulic cylinder body and replace the stressed object of piston rod, ability to bear is increased substantially.
The foregoing is only embodiment of the present utility model; not thereby limit the scope of the claims of the present utility model; every equivalent structure or conversion of equivalent flow process that utilizes the utility model description to do; or be directly or indirectly used in other relevant technical fields, be all in like manner included in scope of patent protection of the present utility model.
Claims (2)
1. a hollow piston rod-type oil hydraulic cylinder, it mainly comprises: oil hydraulic cylinder (1) and the piston rod (2) supporting with it; Described oil hydraulic cylinder (1) comprises the cylinder body (4) of cylinder cap (3) and hollow, and piston rod (2) is matched with in described oil hydraulic cylinder (1), and the piston head (5) on piston rod (2) is divided into inlet space (6) and oil revolute chamber (7) by the inner chamber of oil hydraulic cylinder (1); It is characterized in that: described piston rod (2) is hollow piston rod, and its internal cavities is oil back chamber (8), the axial oil inlet pipe (9) that is provided with of oil back chamber (8), hydraulic oil flows in the inlet space (6) in oil hydraulic cylinder (1) by oil inlet pipe (9); On piston rod (2), be also provided with oil outlet (10), the ，Jiang oil revolute chamber of oil revolute chamber (7) (7) that described oil outlet (10) is aimed at oil hydraulic cylinder (1) is communicated with oil back chamber (8).
2. a kind of hollow piston rod-type oil hydraulic cylinder according to claim 1, is characterized in that: described piston rod (2) is made by seamless steel pipe.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201320465735.2U CN203453174U (en) | 2013-08-01 | 2013-08-01 | Hollow piston rod type hydraulic cylinder |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201320465735.2U CN203453174U (en) | 2013-08-01 | 2013-08-01 | Hollow piston rod type hydraulic cylinder |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN203453174U true CN203453174U (en) | 2014-02-26 |
Family
ID=50133053
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201320465735.2U Expired - Fee Related CN203453174U (en) | 2013-08-01 | 2013-08-01 | Hollow piston rod type hydraulic cylinder |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN203453174U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110886739A (en) * | 2019-12-05 | 2020-03-17 | 徐州徐工液压件有限公司 | Double-rod hydraulic cylinder with assembled piston rod with rod internal oil through structure |
-
2013
- 2013-08-01 CN CN201320465735.2U patent/CN203453174U/en not_active Expired - Fee Related
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110886739A (en) * | 2019-12-05 | 2020-03-17 | 徐州徐工液压件有限公司 | Double-rod hydraulic cylinder with assembled piston rod with rod internal oil through structure |
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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: 20140226 Termination date: 20140801 |
|
| EXPY | Termination of patent right or utility model |