CN2670646Y - Pressure-relieving ram oil cylinder - Google Patents
Pressure-relieving ram oil cylinder Download PDFInfo
- Publication number
- CN2670646Y CN2670646Y CNU032711891U CN03271189U CN2670646Y CN 2670646 Y CN2670646 Y CN 2670646Y CN U032711891 U CNU032711891 U CN U032711891U CN 03271189 U CN03271189 U CN 03271189U CN 2670646 Y CN2670646 Y CN 2670646Y
- Authority
- CN
- China
- Prior art keywords
- plunger
- cylinder
- oil
- cylinder body
- end socket
- 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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Abstract
The utility model relates to a pressure-relieving plunger type oil cylinder, comprising a cylinder body. The inner cavity of the cylinder body is provided with a plunger which can move up and down; the top end of the plunger extends outwards; the lower position of the wall of the cylinder body is provided with the oil inlet pipe opening of the oil cylinder communicated with the inner cavity of the cylinder body; the top end of the inner cavity of the cylinder body is provided with the end socket of the cylinder body fixedly connected with the inner surface of the cylinder body and sealed with the outer surface of the plunger; the structure of the pressure-relieving ram oil cylinder is characterized in that: the plunger is a hollow body; the bottom wall of the plunger is provided with a plunger oil inlet; the lower position of the side wall of the plunger is provided with a plunger oil inlet/outlet hole; the inner surface of the end socket of the oil cylinder is provided with an oil slot; the pressure-relieving oil outlet pipe opening of the oil cylinder passing through the end socket of the cylinder body to be communicated with the oil slot is provided corresponding to the oil slot position on the upper section of the cylinder body. The pressure-relieving plunger type oil cylinder has low cost, and good performance; other hydraulic devices can not be damaged.
Description
Technical field
The utility model relates to a kind of piston type cylinder, a kind of release piston type cylinder of more specifically saying so.
Background technique
At present, be contained in the external ram of tractor and tractor back bucket part, two kinds of structural types are arranged, a kind of is ram cylinder, and another kind is a piston type cylinder.The ram cylinder better performances, but manufacturing process is numerous and diverse, the cost height.Though the manufacturing process of piston type cylinder is simple, cost is low, can not release, cause the oil impregnate and the damage of other hydraulic pressure installation such as the gear pump that is connected with oil cylinder, distributing valve easily.
Summary of the invention
The purpose of this utility model provides that a kind of cost is low, performance good, does not damage the release piston type cylinder of other hydraulic pressure installation.
In order to realize above-mentioned purpose, this release piston type cylinder, comprise cylinder body, it is overhanging that the top is housed in the inner chamber of cylinder body, and the plunger that can move up and down, the lower position of cylinder wall is equipped with the oil cylinder oil-feed mouth of pipe that is communicated with inner chamber of cylinder block, the inner chamber top of cylinder body is equipped with and is fixed on the inner surface of cylinder block, and with the cylinder body end socket of outer plunger surface sealing, its structural feature is that plunger is a hollow body, the diapire of plunger is provided with the plunger oil inlet hole, the lower sidewall position of plunger is provided with plunger turnover oilhole, the internal surface of oil cylinder seal head is provided with oil groove, and the cylinder body epimere is equipped with corresponding to the oil groove position and passes the fuel-displaced mouth of pipe of oil cylinder release that the cylinder body end socket is communicated with oil groove.
Above-mentioned cylinder body end socket comprises the lower seal head ring plate affixed with inner surface of cylinder block, upper cover ring plate and is contained in the following O-ring seals on the lower seal head ring plate and is contained in last O-ring seals on the upper cover ring plate that oil groove is located on the upper cover ring plate.
During work, flow through next hydraulic oil through gear pump from distributing valve, enter inner chamber of cylinder block by the oil cylinder oil-feed mouth of pipe, enter plunger cavity through plunger oil inlet hole and plunger turnover oilhole again, because the cylinder body end socket seals inner chamber of cylinder block, thereby the pressure of hydraulic oil promotes to move on the plunger, when moving on to plunger turnover oilhole on the plunger when being positioned at the position of oil groove, hydraulic oil in the plunger cavity just flows out outside the cylinder body through plunger turnover oilhole, oil groove and the fuel-displaced mouth of pipe of oil cylinder release, thereby realizes the purpose of oil cylinder release.
Release piston type cylinder described in the utility model, simple in structure, technology is easy, makes easily, and cost of production is low; Because after plunger, is finished work done top displacement on hydraulic oil is in cylinder body, timely by plunger turnover oilhole, oil groove and the fuel-displaced mouth of pipe release of oil cylinder release, thereby do not damage other hydraulic pressure installation such as gear pump, distributing valve, performance is good.
Description of drawings
Embodiment of the present utility model is illustrated in conjunction with the accompanying drawings, wherein:
Fig. 1 is that plunger is not by the structural representation of the release piston type cylinder the during displacement of top on the hydraulic oil;
Fig. 2 be plunger by top displacement on the hydraulic oil after the structural representation of release piston type cylinder during release.
Among Fig. 1 and Fig. 2, the direct of travel of arrow is represented when being oil cylinder work hydraulic oil.
Embodiment
With reference to accompanying drawing, this release piston type cylinder, comprise cylinder body 1, it is overhanging that the top is housed in the inner chamber of cylinder body 1, and the plunger 2 that can move up and down, the lower position of cylinder wall is equipped with the oil cylinder oil-feed mouth of pipe 3 that is communicated with cylinder body 1 inner chamber, the inner chamber top of cylinder body 1 is equipped with and is fixed on cylinder body 1 internal surface, and with the cylinder body end socket of plunger 2 outer surfaces sealings, plunger 2 is hollow bodies, the diapire of plunger 2 is provided with plunger oil inlet hole 4, the lower sidewall position of plunger 2 is provided with plunger turnover oilhole 5, the internal surface of oil cylinder seal head is provided with oil groove 7, and cylinder body 1 epimere is equipped with corresponding to oil groove 7 positions and passes the fuel-displaced mouth of pipe 6 of oil cylinder release that the cylinder body end socket is communicated with oil groove 7.The cylinder body end socket can adopt multiple structural type, in the present embodiment, the structural type that adopts comprises with affixed lower seal head ring plate 9, the upper cover ring plate 11 of cylinder body 1 internal surface and is contained in the following O-ring seals 8 on the lower seal head ring plate 9 and is contained in last O-ring seals 10 on the upper cover ring plate 11 that oil groove 7 is located on the upper cover ring plate 11.
Claims (3)
1, a kind of release piston type cylinder, comprise cylinder body (1), it is overhanging that the top is housed in the inner chamber of cylinder body (1), and the plunger that can move up and down (2), the lower position of cylinder wall is equipped with the oil cylinder oil-feed mouth of pipe (3) that is communicated with cylinder body (1) inner chamber, the inner chamber top of cylinder body (1) is equipped with and is fixed on cylinder body (1) internal surface, and with the cylinder body end socket of plunger (2) outer surface sealing, it is characterized in that plunger (2) is a hollow body, the diapire of plunger (2) is provided with plunger oil inlet hole (4), the lower sidewall position of plunger (2) is provided with plunger turnover oilhole (5), the internal surface of oil cylinder seal head is provided with oil groove (7), and cylinder body (1) epimere is equipped with corresponding to oil groove (7) position and passes the fuel-displaced mouth of pipe of oil cylinder release (6) that the cylinder body end socket is communicated with oil groove (7).
2, release piston type cylinder according to claim 1 is characterized in that the cylinder body end socket comprises with affixed lower seal head ring plate (9), the upper cover ring plate (11) of cylinder body (1) internal surface and is contained in the following O-ring seals (8) on the lower seal head ring plate (9) and is contained in last O-ring seals (10) on the upper cover ring plate (11).
3, release piston type cylinder according to claim 2 is characterized in that oil groove (7) is located on the upper cover ring plate (11).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNU032711891U CN2670646Y (en) | 2003-07-23 | 2003-07-23 | Pressure-relieving ram oil cylinder |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNU032711891U CN2670646Y (en) | 2003-07-23 | 2003-07-23 | Pressure-relieving ram oil cylinder |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN2670646Y true CN2670646Y (en) | 2005-01-12 |
Family
ID=34473614
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CNU032711891U Expired - Fee Related CN2670646Y (en) | 2003-07-23 | 2003-07-23 | Pressure-relieving ram oil cylinder |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN2670646Y (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109667810A (en) * | 2019-01-07 | 2019-04-23 | 煤炭科学技术研究院有限公司 | A kind of plunger type load cylinder with end of travel automatic protection functions |
-
2003
- 2003-07-23 CN CNU032711891U patent/CN2670646Y/en not_active Expired - Fee Related
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109667810A (en) * | 2019-01-07 | 2019-04-23 | 煤炭科学技术研究院有限公司 | A kind of plunger type load cylinder with end of travel automatic protection functions |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C19 | Lapse of patent right due to non-payment of the annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |