CN201357579Y - Large-scale ultrahigh pressure piston plunger type cylinder - Google Patents
Large-scale ultrahigh pressure piston plunger type cylinder Download PDFInfo
- Publication number
- CN201357579Y CN201357579Y CNU2009200233928U CN200920023392U CN201357579Y CN 201357579 Y CN201357579 Y CN 201357579Y CN U2009200233928 U CNU2009200233928 U CN U2009200233928U CN 200920023392 U CN200920023392 U CN 200920023392U CN 201357579 Y CN201357579 Y CN 201357579Y
- Authority
- CN
- China
- Prior art keywords
- cylinder
- plunger
- cylinder body
- piston type
- piston
- 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 - Lifetime
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Classifications
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B30—PRESSES
- B30B—PRESSES IN GENERAL
- B30B1/00—Presses, using a press ram, characterised by the features of the drive therefor, pressure being transmitted directly, or through simple thrust or tension members only, to the press ram or platen
- B30B1/32—Presses, using a press ram, characterised by the features of the drive therefor, pressure being transmitted directly, or through simple thrust or tension members only, to the press ram or platen by plungers under fluid pressure
Abstract
The utility model discloses a hydraulic cylinder, in particular to a large-scale ultrahigh pressure piston plunger type cylinder. The large-scale ultrahigh pressure piston plunger type cylinder comprises a cylinder body and a cylinder bottom plate connected with the cylinder body, wherein, the bottom part inside the cylinder body adopts a cylinder bottom bearing plate, the cylinder bottom plate is connected to the upper plate frame of a press, and a cylinder mouth compression screw is fixed at the cylinder mouth of the cylinder body. The plunger type cylinder is characterized in that a piston type plunger is installed in the cylinder body, the piston rod cavity of the piston type plunger is directly communicated with an oil tank, a zero-pressure cavity is formed between the piston type plunger and the cylinder body, and the piston type plunger is connected with a press slide block through a slide block connecting flange. The utility model ensures that ultrahigh pressure oil avoids being dumped out directly, thereby ensuring the plunger type cylinder safe and reliable. The cylinder mouth compression screw avoids exposure to high pressures, thereby ensuring the structure of the plunger type cylinder simple. The utility model is applicable to structural design for a 10000-ton large-scale hydraulic press. When the plunger type cylinder is at work, single-cylinder power output reaches 15000 tons, and liquid pressure reaches 100 MPa.
Description
(1) technical field
The utility model relates to a kind of hydraulic jack, particularly a kind of large ultra-high pressure piston type plunger cylinder.
(2) background technology
At present, the cylinder structure that uses on heavy hydraulic press all adopts common plunger case, and it is simple in structure, and the processing and manufacturing assembling is generally adopted on the large-tonnage hydraulic press easily at home.But this oil cylinder objective reality the danger that hydraulic oil directly leaks outside, and under the 25-32Mpa situation, can reach the purpose of normal use through quality seal; But at mill type cylinder and under 100MPa super-pressure state, following point appears:
1) Chang Gui sealing can not reach its purpose, need to adopt the special seal mode, and the phenomenon if super high pressure oil leaks outside will cause and serious consequence, and gently then greasy dirt is all over the sky, and is heavy then cause the person, equipment breakdown.
2) common plunger case seal with annular groove bears hyperpressure, and cylinder mouth housing screw meets with stresses too big, and structure realizes difficulty.
(3) summary of the invention
The utility model is in order to remedy the deficiencies in the prior art, and a kind of hydraulic oil dangerous, safe and reliable large ultra-high pressure piston type plunger cylinder that directly leaks outside that do not have is provided.
The utility model is achieved by the following technical solution:
A kind of large ultra-high pressure piston type plunger cylinder, the cylinder bottom plate that comprises cylinder body and be connected with cylinder body, bottom in the cylinder body is the cylinder bottom backing plate, the cylinder bottom plate is connected on the press on the sheet frame, the cylinder mouth place of cylinder body is fixed with cylinder mouth housing screw, its special character is: the piston type plunger is installed in the described cylinder body, and the rod end chamber and the fuel tank of piston type plunger directly are connected, and form the zero-pressure chamber between piston type plunger and the cylinder body; The piston type plunger is connected with press slide by the slide block adpting flange.
Large ultra-high pressure piston type plunger cylinder of the present utility model, it further improves and is: described cylinder mouth place has the oil return opening of a connection zero-pressure chamber and fuel tank.
The super-pressure state that the utility model has solved super-tonnage hydraulic press upper prop plug cylinder objective reality will cause the problem of serious consequence down in case occur leaking outside, and the plunger design of common plunger case is become the one-way sealing piston structure, and piston rod is directly connected fuel tank.Can obtain like this:
1) guarantee direct outer the unloading of super high pressure oil, safe and reliable.
2) cylinder mouth housing screw does not bear high pressure, and is simple in structure.
The utility model uses in ton large hydraulic press structural design, and the single cylinder power output was 15000 tons during this machine used, and fluid pressure is 100Mpa.
(4) description of drawings
Below in conjunction with accompanying drawing the utility model is further described.
Accompanying drawing is a structural representation of the present utility model.
Among the figure, 1 cylinder body, 2 cylinder bottom plates, 3 cylinder bottom backing plates, sheet frame on 4 press, 5 cylinder mouth housing screws, 6 piston type plungers, 7 zero-pressure chambeies, 8 slide block adpting flanges, 9 press slides, 10 oil return openings, 11 fuel tank passages.
(5) specific embodiment
Accompanying drawing is a kind of specific embodiment of the present utility model.This embodiment comprises cylinder body 1 and the cylinder bottom plate 2 that is connected with cylinder body 1, bottom in the cylinder body 1 is a cylinder bottom backing plate 3, cylinder bottom plate 2 is connected on the press on the sheet frame 4, the cylinder mouth place of cylinder body 1 is fixed with cylinder mouth housing screw 5, piston type plunger 6 is installed in the cylinder body 1, the rod end chamber of piston type plunger 6 directly is connected by fuel tank passage 11 and fuel tank, forms zero-pressure chamber 7 between piston type plunger 6 and the cylinder body 1; Piston type plunger 6 is connected with press slide 9 by slide block adpting flange 8; Cylinder mouth place has the oil return opening 10 of a connection zero-pressure chamber 7 and fuel tank.
As shown in the figure: be the ultra-high pressure piston type plunger cylinder structure, it combines the characteristics of plunger case and piston cylinder, make piston type plunger 6 rod end chambers directly connect fuel tank, form the zero-pressure chamber 7 of rod end chamber, fundamentally eliminated the possibility that super high pressure oil directly leaks outside.Reduced the design difficulty (only be subjected to zero-pressure herein, sealing under low pressure gets final product) of cylinder mouth housing screw 5.This structure has improved the difficulty of cylinder body 1 processing, and we have adopted through-bottom structure to this oil cylinder, and the cylinder body difficulty of processing is readily solved, and cylinder bottom directly is fixed on the last sheet frame of plate frame structure, and stressed direct balance has reduced cylinder bottom stress.This structure is for the super-tonnage hydraulic press particularly suitable of big cylinder diameter, short stroke.
Its operating process is as follows: cylinder bottom plate 2 is installed on the frame-type press on the sheet frame 4, is connected by screw, and the super-pressure hydraulic fluid port connects the super-pressure oil sources, and oil cylinder slide block adpting flange 8 connects press slides 9.Super high pressure oil enters oil cylinder super-pressure chamber, and oil cylinder compressing press slide 9 is implemented pressurization, and 15000 tons of single cylinder output pressures, oil pressure are 100Mpa, and the oil cylinder cavity of resorption is connected fuel tank, in system's running, leaks oil by taking back fuel tank by oil return opening 10.This structure is safe and reliable, and manufacturing and assembly technology are reasonable.
Claims (2)
1. large ultra-high pressure piston type plunger cylinder, comprise cylinder body (1) and the cylinder bottom plate (2) that is connected with cylinder body (1), bottom in the cylinder body (1) is cylinder bottom backing plate (3), cylinder bottom plate (2) is connected on the sheet frame on the press (4), the cylinder mouth place of cylinder body (1) is fixed with cylinder mouth housing screw (5), it is characterized in that: piston type plunger (6) is installed in the described cylinder body (1), the rod end chamber and the fuel tank of piston type plunger (6) directly are connected, and form zero-pressure chamber (7) between piston type plunger (6) and the cylinder body (1); Piston type plunger (6) is connected with press slide (9) by slide block adpting flange (8).
2. large ultra-high pressure piston type plunger cylinder according to claim 1 is characterized in that: described cylinder mouth place has the oil return opening (10) of a connection zero-pressure chamber (7) and fuel tank.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNU2009200233928U CN201357579Y (en) | 2009-03-13 | 2009-03-13 | Large-scale ultrahigh pressure piston plunger type cylinder |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNU2009200233928U CN201357579Y (en) | 2009-03-13 | 2009-03-13 | Large-scale ultrahigh pressure piston plunger type cylinder |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN201357579Y true CN201357579Y (en) | 2009-12-09 |
Family
ID=41423341
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CNU2009200233928U Expired - Lifetime CN201357579Y (en) | 2009-03-13 | 2009-03-13 | Large-scale ultrahigh pressure piston plunger type cylinder |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN201357579Y (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102000748A (en) * | 2010-10-21 | 2011-04-06 | 武汉一冶钢结构有限责任公司 | Anti-eccentricity pressing piston rod connecting device of no-guiding slider type hydraulic press |
| CN101504020B (en) * | 2009-03-13 | 2012-05-23 | 济南巨能液压机电工程有限公司 | Large ultra-high pressure piston type plunger cylinder |
-
2009
- 2009-03-13 CN CNU2009200233928U patent/CN201357579Y/en not_active Expired - Lifetime
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101504020B (en) * | 2009-03-13 | 2012-05-23 | 济南巨能液压机电工程有限公司 | Large ultra-high pressure piston type plunger cylinder |
| CN102000748A (en) * | 2010-10-21 | 2011-04-06 | 武汉一冶钢结构有限责任公司 | Anti-eccentricity pressing piston rod connecting device of no-guiding slider type hydraulic press |
| CN102000748B (en) * | 2010-10-21 | 2012-05-30 | 武汉一冶钢结构有限责任公司 | Anti-eccentricity pressing piston rod connecting device of no-guiding slider type hydraulic press |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| AV01 | Patent right actively abandoned |
Granted publication date: 20091209 Effective date of abandoning: 20090313 |