CN102966624A - Combined plunger cylinder - Google Patents
Combined plunger cylinder Download PDFInfo
- Publication number
- CN102966624A CN102966624A CN 201210447303 CN201210447303A CN102966624A CN 102966624 A CN102966624 A CN 102966624A CN 201210447303 CN201210447303 CN 201210447303 CN 201210447303 A CN201210447303 A CN 201210447303A CN 102966624 A CN102966624 A CN 102966624A
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- China
- Prior art keywords
- plunger
- auxiliary piston
- piston
- cylinder
- cylinder body
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- 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.)
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Abstract
The invention relates to a combined plunger cylinder. A plunger is arranged in a cavity of a cylinder body, the middle part of the plunger is provided with a piston cavity, the bottom of the plunger is provided with an air vent communicated with the piston cavity, an auxiliary piston is arranged in a piston cylinder in the middle of the plunger, the upper part of the middle part of the auxiliary piston is provided with an auxiliary piston rod, the top end of the auxiliary piston rod extends out of the top end of the cylinder body and is fixedly connected with the cylinder body, the upper port part of the piston cavity of the plunger is fixedly provided with a top cover, the middle part of the auxiliary piston is provided with an oil hole, and the oil hole is communicated with a space enclosed by the auxiliary piston, the plunger and the upper cover. The combined plunger cylinder has the advantages of simple and compact overall structure and fewer sealing parts, and sealing can be realized easily.
Description
Technical field
The present invention relates to hydraulic press, the hydraulic press that is specifically related to some subtable faces drives oil cylinder, belongs to the hydraulic press technical field.
Background technique
In the hydraulic equipment of some subtable faces, large pressure, owing to be subjected to the restriction of table space, generally adopt plunger cylinder, and the return facilities of plunger auxiliarily is set simultaneously, the setting of return facilities is not only arranged not only relatively difficulty at less working space, simultaneously; Also can take effective working space, to this, go back at present the more better solution of neither one, although utilize the way at the additional small-sized oil cylinder in the top of plunger case to reach the purpose that realizes the plunger backhaul in the existing technology, but, this additional oil cylinder can take height space equally, and it is complicated that structure is slightly disliked, the sealing position is more, leakage accident occurs easily, cause equipment work undesired, for example: " the combined plunger oil cylinder " that Chinese patent 201120108286.7 is announced, be exactly the way at the additional small-sized return stroke oil cylinder in the top of plunger case, the problem of its existence is namely above-mentioned pointed: exist to take height space, and it is complicated that structure is slightly disliked, the sealing position is more, leakage accident occurs easily, cause the abnormal defective of equipment work.
Summary of the invention
The object of the invention is to: to having the existing defects of hydraulic press plunger case of subtable face now, the invention provides a kind of novel Combined plunger piston cylinder, overcome the existing defects of prior art.
The present invention realizes that the technological scheme that above-mentioned purpose adopts is: described a kind of Combined plunger piston oil cylinder, comprise: cylinder body, plunger, auxiliary piston, auxiliary piston rod, cover plate forms, in the inner chamber of cylinder body, be provided with plunger, be shaped with piston cavity in the middle of the described plunger, be provided with the exhaust port that communicates with piston cavity in the bottom of plunger, in the piston cylinder in the middle of the plunger, be provided with auxiliary piston, middle upper portion at auxiliary piston is provided with auxiliary piston rod, the top of described auxiliary piston rod is stretched out the upper end, top of cylinder body and is fixed together with cylinder body, piston cavity upper end-hole position at plunger is mounted with top cover, centre at auxiliary piston rod is shaped with oilhole, described oilhole with by auxiliary piston, the space that plunger and loam cake seal communicates.
Beneficial effect: the plunger backhaul among the present invention is by passing into the way of hydraulic oil in the oilhole in the middle of auxiliary piston rod, namely can realize the backhaul of plunger, can be found out by structure of the present invention and working procedure, lamps structure of the present invention is simple, the advantage of compact overall structure, the less and easy realization sealing in sealing position.
Description of drawings
Accompanying drawing 1 is structure principle chart of the present invention;
Shown in Fig. 1: 1, cylinder body; 2, plunger; 3, auxiliary piston; 4, auxiliary piston rod; 5, cover plate; 6, piston cylinder; 7, exhaust port; 8, oilhole.
Embodiment
A kind of Combined plunger piston oil cylinder, comprise cylinder body 1, plunger 2, auxiliary piston 3, auxiliary piston rod 4, cover plate 5, in the inner chamber 1 of cylinder body, be provided with plunger 2, in the middle of plunger 2, be shaped with piston cavity 6, be provided with the exhaust port 7 that communicates with piston cavity 6 in the bottom of plunger 2,6 are provided with auxiliary piston 3 in the piston cylinder in the middle of plunger 2, middle upper portion at auxiliary piston 3 is provided with auxiliary piston rod 4, the top of auxiliary piston rod 4 is stretched out the upper end, top of cylinder body 1 and is fixed together with cylinder body 1, piston cavity 6 upper end-hole positions at plunger 2 are mounted with top cover 5, be shaped with oilhole 8 in the centre of auxiliary piston rod 4, oilhole 8 with by auxiliary piston 3, the space that plunger 2 and loam cake 5 seal communicates.
Claims (1)
1. Combined plunger piston oil cylinder, comprise cylinder body (1), plunger (2), auxiliary piston (3), auxiliary piston rod (4), cover plate (5), it is characterized in that: in the inner chamber (1) of cylinder body, be provided with plunger (2), in the middle of plunger (2), be shaped with piston cavity (6), be provided with the exhaust port (7) that communicates with piston cavity (6) in the bottom of plunger (2), (6) are provided with auxiliary piston (3) in the piston cylinder in the middle of the plunger (2), middle upper portion at auxiliary piston (3) is provided with auxiliary piston rod (4), the top of auxiliary piston rod (4) is stretched out the upper end, top of cylinder body (1) and is fixed together with cylinder body (1), piston cavity (6) upper end-hole position in plunger (2) is mounted with top cover (5), be shaped with oilhole (8) in the centre of auxiliary piston rod (4), oilhole (8) with by auxiliary piston (3), the space that plunger (2) and loam cake (5) seal communicates.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201210447303 CN102966624A (en) | 2012-11-12 | 2012-11-12 | Combined plunger cylinder |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201210447303 CN102966624A (en) | 2012-11-12 | 2012-11-12 | Combined plunger cylinder |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN102966624A true CN102966624A (en) | 2013-03-13 |
Family
ID=47796979
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 201210447303 Pending CN102966624A (en) | 2012-11-12 | 2012-11-12 | Combined plunger cylinder |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN102966624A (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103291686A (en) * | 2013-05-15 | 2013-09-11 | 江苏天鹏机电制造有限公司 | Middle cylinder of plunger-type hydraulic cylinder |
| CN104533872A (en) * | 2013-08-02 | 2015-04-22 | 成都快典科技有限公司 | Ultrahigh pressure hydraulic cylinder |
| CN104595276A (en) * | 2013-08-02 | 2015-05-06 | 成都快典科技有限公司 | Ultra high pressure hydraulic cylinder |
-
2012
- 2012-11-12 CN CN 201210447303 patent/CN102966624A/en active Pending
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103291686A (en) * | 2013-05-15 | 2013-09-11 | 江苏天鹏机电制造有限公司 | Middle cylinder of plunger-type hydraulic cylinder |
| CN104533872A (en) * | 2013-08-02 | 2015-04-22 | 成都快典科技有限公司 | Ultrahigh pressure hydraulic cylinder |
| CN104595276A (en) * | 2013-08-02 | 2015-05-06 | 成都快典科技有限公司 | Ultra high pressure hydraulic cylinder |
| CN104595276B (en) * | 2013-08-02 | 2016-09-14 | 成都快典科技有限公司 | Ultrahigh-pressure hydraulic cylinder |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| C02 | Deemed withdrawal of patent application after publication (patent law 2001) | ||
| WD01 | Invention patent application deemed withdrawn after publication |
Application publication date: 20130313 |