CN202390148U - Hydraulic cylinder of high-pressure double-acting jack - Google Patents
Hydraulic cylinder of high-pressure double-acting jack Download PDFInfo
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- CN202390148U CN202390148U CN2011205115681U CN201120511568U CN202390148U CN 202390148 U CN202390148 U CN 202390148U CN 2011205115681 U CN2011205115681 U CN 2011205115681U CN 201120511568 U CN201120511568 U CN 201120511568U CN 202390148 U CN202390148 U CN 202390148U
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Abstract
The utility model discloses a hydraulic cylinder of a high-pressure double-acting jack. The hydraulic cylinder comprises a cylinder barrel, a piston and a piston rod, wherein the piston rod extends out of one end of the cylinder barrel and is fixedly connected with a fixed plate; the cylinder barrel is divided into a high-pressure oil cavity and a low-pressure stroke oil cavity by the piston; a middle oil cavity is arranged in the piston rod and is communicated with the low-pressure stroke oil cavity; the hydraulic cylinder is also provided with a first oil inlet and outlet hard pipe and a second oil inlet and outlet hard pipe; one end of the first oil inlet and outlet hard pipe is communicated with the high-pressure oil cavity, and the other end of the first oil inlet and outlet hard pipe penetrates through the fixed plate and is communicated with the outside; one end of the second oil inlet and outlet hard pipe is communicated with the middle oil cavity, and the other end of the second oil inlet and outlet hard pipe penetrates through the fixed plate and is communicated with the outside; and movable sealing between the first oil inlet and outlet hard pipe and the piston is high-pressure-resistant. The hydraulic cylinder disclosed by the utility model has the advantages that the high-pressure hose is not used for connection, and no movable oil inlet and outlet is arranged; low pressure is adopted for obtaining the stroke, high pressure is adopted for supplementing and maintaining pressure, a stroke realizing mechanism is simplified, the whole size of the hydraulic cylinder can be greatly reduced, the whole structure is material-saving and energy-saving, and small in the occupied space, and the building structure is simplified.
Description
Technical field
The utility model relate to a kind of on the steel cord conveyor belt curing line pressure type hydraulic jack, be specifically related to a kind of high pressure double acting jack hydraulic cylinder.
Background technology
Hydraulic jack is claimed oil jack again; It is a kind of jack that adopts plunger or hydraulic actuating cylinder to lift part as rigid top; The advantage of hydraulic jack is that practical less power just can make things convenient for lifting very massive object fully; When the height that needs the requirement of lifting workpiece to, only need repeatedly motion jack regulations and parameters or shaft-like handle to pump.
Traditional high pressure jack hydraulic cylinder refers to that hydraulic system pressure is at the large-tonnage of 45-65MPa, the hydraulic actuating cylinder of long pressurize; On steel cord conveyor belt sulfuration growth line, need change stroke hydraulic cylinder with 150-200 ton pressure, but on the market sale be the single-acting high-pressure and hydraulic jack that stroke only has 10-30mm.
The utility model content
The purpose of the utility model is to provide a kind of novel structure, advantages of small volume, the high pressure double acting jack hydraulic cylinder of efficient energy-saving.
For solving the problems of the technologies described above, the utility model provides a kind of high pressure double acting jack hydraulic cylinder, comprises cylinder barrel, piston and piston rod; Said piston rod stretches out cylinder barrel one end, and is connected with adapter plate, oil pocket in the middle of being provided with in the said piston rod; Piston is divided into high-voltage oil cavity and low pressure stroke oil pocket with cylinder barrel; Piston rod is arranged in the low pressure stroke oil pocket, and middle oil pocket communicates with the low pressure stroke oil pocket, also is provided with the first oily hard tube of turnover and the oily hard tube of second turnover on the said high pressure double acting jack hydraulic cylinder; Oily hard tube one end of first turnover communicates with high-voltage oil cavity; The other end passes adapter plate and communicates with the external world, and oily hard tube one end of second turnover communicates with middle oil pocket, and the other end passes adapter plate and communicates with the external world.
As the improvement of the utility model, the asphalt channel of said middle oil pocket and low pressure stroke oil pocket is located on the piston.
As the improvement of the utility model, the oily hard tube of said first turnover is provided with the high pressure unidirectional stop valve.
The beneficial effect of the utility model is: the dynamic seal of the first oily hard tube of turnover and piston is high pressure resistant, and controls the high-pressure oil passage conducting and end, and hydraulic actuating cylinder is without high pressure hose and movable oil inlet and outlet; The utility model can adopt low pressure to obtain stroke, high pressure ftercompction pressurize, and with respect to the conventional high-tension jack, this hydraulic actuating cylinder has been simplified stroke and has been realized mechanism; Because Design Orientation is in using high pressure, Superhigh Pressure Hydraulic System, identical relatively large-tonnage mesolow liquid cylinder entity size, the overall dimensions of hydraulic actuating cylinder can reduce many; Be applied to steel cord conveyor belt sulfuration growth line, make integral structure economize material, energy-conservation, take up an area of little, building structure and simplify.
Description of drawings
Accompanying drawing 1 is the front view of the high pressure double acting jack hydraulic cylinder of the utility model;
Accompanying drawing 2 is the left view of the high pressure double acting jack hydraulic cylinder of the utility model.
Label declaration: 1-cylinder barrel; The 11-high-voltage oil cavity; 12-low pressure stroke oil pocket; The 2-piston; The 3-piston rod; The 31-adapter plate; Oil pocket in the middle of the 32-; The oily hard tube of 4-first turnover; The oily hard tube of 5-second turnover; The 6-asphalt channel.
The specific embodiment
By the technology contents, the structural attitude that specify the utility model, realized purpose and effect, know clearly below in conjunction with embodiment and conjunction with figs. and give explanation.
The utility model provide by the technology contents, the structural attitude that specify the utility model, realized purpose and effect, know clearly below in conjunction with embodiment and conjunction with figs. and give explanation.
With reference to accompanying drawing 1 and accompanying drawing 2, a kind of high pressure double acting jack hydraulic cylinder that the utility model provides shown in the accompanying drawing comprises cylinder barrel 1, piston 2 and piston rod 3; Said piston rod 3 stretches out cylinder barrel 1 one ends, and is connected with adapter plate 31, oil pocket 32 in the middle of being provided with in the said piston rod 3; Piston is divided into high-voltage oil cavity 11 and low pressure stroke oil pocket 12 with cylinder barrel 1; Piston rod 3 is arranged in the low pressure stroke oil pocket 12, and middle oil pocket 32 communicates with low pressure stroke oil pocket 12, also is provided with the first oily hard tube 4 of turnover and the oily hard tube 5 of second turnover on the said high pressure double acting jack hydraulic cylinder; Oily hard tube 4 one ends of first turnover communicate with high-voltage oil cavity 11; The other end passes adapter plate 31 and communicates with the external world, and oily hard tube 5 one ends of second turnover communicate with middle oil pocket 32, and the other end passes adapter plate 31 and communicates with the external world.
Present embodiment, adapter plate 31 is a flange, and the fixed form of flange and piston rod 3 can be multiple, preferably is threaded, and flange is provided with and is fixed on the equipment upper screwed hole, and the other end of cylinder barrel 1 is fixed in load bearing face.
In one embodiment, said piston 2, piston rod 3 and flange are welded as a whole.
In the present embodiment, the oily hard tube 4 of said first turnover is provided with the high pressure unidirectional stop valve.
In the present embodiment, high pressure double acting jack hydraulic cylinder also comprises the pressure inductor that high-voltage oil cavity 11 and low pressure stroke oil pocket 12 is carried out pressure detection.
When using beginning; At first low pressure oil is injected in the high-voltage oil cavity 11 from the oily hard tube 4 of first turnover; And 12 oil returns of low pressure stroke oil pocket, when hydraulic actuating cylinder was upheld the trip distance of needs, switching high pressure short time, travel incognito journey reached required pressure; The high pressure unidirectional stop valve ends, and the hydraulic oil in the high-voltage oil cavity 11 is carried out pressurize;
During work, pressure inductor checks the pressure, and when the pressure in the hydraulic actuating cylinder is lower than required pressure, starts the Hydraulic Pump ftercompction that is arranged on the external oil circuit of hydraulic actuating cylinder, guarantees the pressure of the hydraulic actuating cylinder of on period all the time;
The high-pressure work phase is opened high pressure unidirectional stop valve removal high pressure when finishing, and the oily hard tube 4 of first turnover carries out oil return, and the oily hard tube 5 injection low pressure oil of second turnover make piston rod 3 be recovered to original end of travel, promptly get back to the hydraulic actuating cylinder state when using beginning.
In the present embodiment, with reference to accompanying drawing 1 and accompanying drawing 2, shown in the accompanying drawing said in the middle of the asphalt channel 6 of oil pocket 32 and low pressure stroke oil pocket 12 be located on the piston 2, make its passage when piston 2 slides in cylinder barrel 1 can not receive the interference of other sidewalls.
The advantage of the utility model:
1, the dynamic seal of the first oily hard tube of turnover and piston is high pressure resistant, and controls the high-pressure oil passage conducting and end, and hydraulic actuating cylinder is without high pressure hose and movable oil inlet and outlet.
2, adopt low pressure to obtain stroke, high pressure ftercompction pressurize, with respect to the conventional high-tension jack, this hydraulic actuating cylinder has been simplified stroke and has been realized mechanism;
3, since Design Orientation in using high pressure, Superhigh Pressure Hydraulic System, identical relatively large-tonnage mesolow liquid cylinder entity size, the overall dimensions of hydraulic actuating cylinder can reduce many;
4, be applied to the steel cord conveyor belt curing line as last pressure type hydraulic actuating cylinder, make integral structure economize material, energy-conservation, take up an area of little, building structure and simplify.
The above is merely the embodiment of the utility model; Be not thus the restriction the utility model claim; Every equivalent structure or equivalent flow process conversion that utilizes the utility model specification sheets and accompanying drawing content to be done; Or directly or indirectly be used in other relevant technical fields, all in like manner be included in the scope of patent protection of the utility model.
Claims (4)
1. a high pressure double acting jack hydraulic cylinder comprises cylinder barrel, piston and piston rod, it is characterized in that; Said piston rod stretches out cylinder barrel one end, and is connected with adapter plate, oil pocket in the middle of being provided with in the said piston rod; Piston is divided into high-voltage oil cavity and low pressure stroke oil pocket with cylinder barrel; Piston rod is arranged in the low pressure stroke oil pocket, and middle oil pocket communicates with the low pressure stroke oil pocket, also is provided with the first oily hard tube of turnover and the oily hard tube of second turnover on the said high pressure double acting jack hydraulic cylinder; Oily hard tube one end of first turnover communicates with high-voltage oil cavity; The other end passes adapter plate and communicates with the external world, and oily hard tube one end of second turnover communicates with middle oil pocket, and the other end passes adapter plate and communicates with the external world.
2. high pressure double acting jack hydraulic cylinder according to claim 1 is characterized in that, the asphalt channel of said middle oil pocket and low pressure stroke oil pocket is located on the piston.
3. high pressure double acting jack hydraulic cylinder according to claim 1 is characterized in that, the oily hard tube of said first turnover is provided with the high pressure unidirectional stop valve.
4. high pressure double acting jack hydraulic cylinder according to claim 1 is characterized in that, also comprises the pressure inductor that high-voltage oil cavity and low pressure stroke oil pocket is carried out pressure detection.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011205115681U CN202390148U (en) | 2011-12-08 | 2011-12-08 | Hydraulic cylinder of high-pressure double-acting jack |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011205115681U CN202390148U (en) | 2011-12-08 | 2011-12-08 | Hydraulic cylinder of high-pressure double-acting jack |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN202390148U true CN202390148U (en) | 2012-08-22 |
Family
ID=46665088
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2011205115681U Expired - Lifetime CN202390148U (en) | 2011-12-08 | 2011-12-08 | Hydraulic cylinder of high-pressure double-acting jack |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN202390148U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111852987A (en) * | 2020-07-31 | 2020-10-30 | 佛山宇仁智能科技有限公司 | High-pressure leakage-proof hydraulic cylinder |
| WO2022246656A1 (en) * | 2021-05-25 | 2022-12-01 | 杭州天铭科技股份有限公司 | Hydraulic oilway system and hydraulic jack |
-
2011
- 2011-12-08 CN CN2011205115681U patent/CN202390148U/en not_active Expired - Lifetime
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111852987A (en) * | 2020-07-31 | 2020-10-30 | 佛山宇仁智能科技有限公司 | High-pressure leakage-proof hydraulic cylinder |
| WO2022246656A1 (en) * | 2021-05-25 | 2022-12-01 | 杭州天铭科技股份有限公司 | Hydraulic oilway system and hydraulic jack |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CX01 | Expiry of patent term |
Granted publication date: 20120822 |
|
| CX01 | Expiry of patent term |