CN204267423U - Telescopic hydraulic oil cylinder - Google Patents
Telescopic hydraulic oil cylinder Download PDFInfo
- Publication number
- CN204267423U CN204267423U CN201420735578.7U CN201420735578U CN204267423U CN 204267423 U CN204267423 U CN 204267423U CN 201420735578 U CN201420735578 U CN 201420735578U CN 204267423 U CN204267423 U CN 204267423U
- Authority
- CN
- China
- Prior art keywords
- oil
- cylinder
- cylinder barrel
- oil pocket
- 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 - Fee Related
Links
Abstract
The utility model relates to technical field of hydraulic oil cylinder, especially a kind of telescopic hydraulic oil cylinder.Comprise the cylinder barrel of closed at both ends, described cylinder barrel inside is provided with piston, cylinder barrel inside is divided into the first oil pocket and the second oil pocket by described piston, the piston rod of described piston stretches out from cylinder barrel one end and fixes with pedestal, also being enclosed with outside described cylinder barrel can along the reciprocating cylinder sleeve in bore axis direction, the outer side surface of described cylinder sleeve is provided with joint, Spielpassung between described cylinder sleeve two ends and cylinder barrel side also arranges oil seal, on the outer side surface of described cylinder barrel, also circumference is provided with limited ring, space between cylinder barrel and cylinder sleeve is divided into the 3rd oil pocket and the 4th oil pocket by described limited ring, described telescopic hydraulic oil cylinder is also provided with hydraulic circuit.The utility model, by design cylinder sleeve, when realizing identical stroke, reducing the length dimension of hydraulic jack, meeting the demand of all kinds of engineering goods compact designed.
Description
Technical field
The utility model relates to technical field of hydraulic oil cylinder, especially a kind of telescopic hydraulic oil cylinder.
Background technique
The kind of oil hydraulic cylinder comprises single-stage cylinder, multi-stage expansion cylinder.Multi-stage expansion cylinder common is at present all the corresponding piston of every first-stage cylinder, the mode being promoted every first stage piston by hydraulic oil successively realizes linear reciprocation action, the cylinder internal oil channel design comparison of this oil hydraulic cylinder is simple, can realize single-acting or the multiaction action of oil hydraulic cylinder.But the shortcoming of this Multi-stage cylinder is that will to realize reciprocating action stroke larger, and the general structure of oil hydraulic cylinder is also larger, this is because the total kilometres of oil hydraulic cylinder are exactly the summation of every one-level single-stage cylinder stroke, when reaching range, the overall dimension of oil hydraulic cylinder can be very large.When some Total Product structural requirement is compact, when having a strict demand to the kinematic pair space of oil hydraulic cylinder link, just limit the use of oil hydraulic cylinder, also general arrangement will be changed if desired, overall structure can be caused too huge, be unfavorable for saving manufacture cost, be also unfavorable for the trend of product specification compactness.
Model utility content
The technical problems to be solved in the utility model is to provide a kind of telescopic hydraulic oil cylinder, is realizing under identical travel conditions, reduces the length dimension of hydraulic jack.
In order to solve the problems of the technologies described above, the utility model comprises the cylinder barrel of closed at both ends, described cylinder barrel inside is provided with piston, cylinder barrel inside is divided into the first oil pocket and the second oil pocket by described piston, the piston rod of described piston stretches out from cylinder barrel one end and fixes with pedestal, also being enclosed with outside described cylinder barrel can along the reciprocating cylinder sleeve in bore axis direction, the outer side surface of described cylinder sleeve is provided with joint, Spielpassung between described cylinder sleeve two ends and cylinder barrel side oil seal, on the outer side surface of described cylinder barrel, also circumference is provided with limited ring, space between cylinder barrel and cylinder sleeve is divided into the 3rd oil pocket and the 4th oil pocket by described limited ring, described telescopic hydraulic oil cylinder is also provided with hydraulic circuit.
Described limited ring is arranged on the middle part of cylinder barrel outer side surface, and the length of described cylinder sleeve is the half of cylinder barrel length.
Described hydraulic circuit comprises setting the first oil inlet and outlet on the piston rod, and the first oil duct that piston rod inner is axially arranged, described first oil duct and the first oil pocket through, the end cap of described cylinder barrel is provided with the second oil inlet and outlet and the second oil duct, described second oil duct and the second oil pocket through, in the sidewall of described cylinder barrel, bore axis direction is provided with the 3rd oil duct, described 3rd oil duct by the second oil pocket and the 4th oil pocket through, the 4th oil duct is also provided with along bore axis direction in the sidewall of described cylinder barrel, described 4th oil duct by the first oil pocket and the 3rd oil pocket through.
The utility model, by design cylinder sleeve, when realizing identical stroke, reducing the length dimension of hydraulic jack, meeting the demand of all kinds of engineering goods compact designed.
Accompanying drawing explanation
Fig. 1 is structural representation of the present utility model.
Embodiment
Embodiment cited by the utility model; just understand the utility model for helping; should not be construed as the restriction to the utility model protection domain; for those skilled in the art; under the prerequisite not departing from the utility model thought; can also improve the utility model and modify, these improve and modification also falls in the scope of the utility model claim protection.
As shown in Figure 1, the utility model comprises the cylinder barrel 1 of closed at both ends, described cylinder barrel 1 inside is provided with piston 2, cylinder barrel 1 inside is divided into the first oil pocket 11 and the second oil pocket 12 by described piston 2, the piston rod 21 of described piston 2 stretches out from cylinder barrel 1 one end and fixes with pedestal, also being enclosed with outside described cylinder barrel 1 can along the reciprocating cylinder sleeve 3 of cylinder barrel 1 axial direction, the outer side surface of described cylinder sleeve 3 is provided with joint 4, described cylinder sleeve 3 two ends coordinate with cylinder barrel 1 side clearance and arrange oil seal, on the outer side surface of described cylinder barrel 1, also circumference is provided with limited ring 5, described limited ring 5 is arranged on the middle part of cylinder barrel 1 outer side surface, there is position-limiting action, cylinder sleeve can not be slipped away cylinder barrel, space between cylinder barrel 1 and cylinder sleeve 3 is divided into the 3rd oil pocket 31 and the 4th oil pocket 32 by described limited ring 3 simultaneously.In order to the stroke realizing hydraulic jack maximizes, preferably, the length of described cylinder sleeve 3 is the half of cylinder barrel 1 length.
As preferred embodiment of the present utility model, hydraulic circuit of the present utility model comprises setting the first oil inlet and outlet 61 on the piston rod, and the first oil duct 62 that piston rod inner is axially arranged, described first oil duct 62 and the first oil pocket 11 through, the end cap of described cylinder barrel 1 is provided with the second oil inlet and outlet 63 and the second oil duct 64, described second oil duct 63 and the second oil pocket 12 through, in the sidewall of described cylinder barrel 1, cylinder barrel 1 axial direction is provided with the 3rd oil duct 65, described 3rd oil duct 65 by the second oil pocket 12 and the 4th oil pocket 32 through, the 4th oil duct 66 is also provided with along bore axis direction in the sidewall of described cylinder barrel 1, described 4th oil duct 66 by the first oil pocket 11 and the 3rd oil pocket 31 through.
Described in the utility modelly not only may be used for hydraulic jack, can also cylinder be used for.
When using the utility model, piston rod 21 one end is fixed on one of them equipment of the kinematic pair that needs move reciprocatingly, another equipment of kinematic pair is arranged on the joint 4 of sleeve, and whole like this kinematic pair just can realize to-and-fro motion under Driven by Hydraulic Cylinder.The smart structural design of the utility model oil hydraulic cylinder internal galleries, run action is stable, smooth-going, in the restricted situation of oil hydraulic cylinder overall dimension, can realize kinematic pair reciprocating stroke maximum time corresponding oil hydraulic cylinder overall dimension minimum advantage, meet the compact designed demand of existing engineering goods.
Specific works process of the present utility model is: when cylinder barrel 1 and cylinder sleeve 3 are all in piston rod 21 bottom, and the first oil pocket 11 volume and the 3rd oil pocket 31 volume are in minimum state, and the second oil pocket 12 volume and the 4th oil pocket 32 volume are in maximum rating.Now realize from the first oil inlet and outlet 61 oil-feed by controlling selector valve hydraulic oil, the first oil pocket 11 and the 3rd oil pocket 31 is entered through the first oil duct 62, the hydraulic oil simultaneously realized in the second oil pocket 12 and the 4th oil pocket 32 by controlling another group selector valve gets back to hydraulic oil container through the second oil inlet and outlet 63, under hydraulic fluid pressure effect, starting stage cylinder barrel 1 and cylinder sleeve 3 are synchronized with the movement to piston 2 direction, when cylinder barrel 1 moves to the restraining position of piston 2, cylinder sleeve 3 can continue to move bottom cylinder barrel under the effect of hydraulic oil, stop until running to limited ring 5 place, now two groups of selector valves quit work, first oil pocket 11 and the 3rd oil pocket 31 volume reach maximum, and the second oil pocket 12 and the 4th oil pocket 32 volume minimum, joint 4 above cylinder sleeve 3 reaches the maximum position of movement travel.
Otherwise, change the operative orientation of two groups of selector valves, in first oil pocket 11 and the 3rd oil pocket 31, hydraulic oil entered the first oil duct 62 and got back to hydraulic oil container from the first oil inlet and outlet 61 is fuel-displaced, hydraulic oil through the second oil inlet and outlet 63 to the second oil pocket 12 and the 4th oil pocket 32 fuel feeding, under the pressure effect of hydraulic oil, cylinder barrel 1 and cylinder sleeve 3 move to the fixed end direction of piston rod 21 simultaneously, cylinder barrel 1 stop motion when cylinder barrel 1 moves to piston 2 place, cylinder sleeve 3 can carry out to the motion of piston rod fixed end until cylinder sleeve 3 moves to limited ring 4 terminates under hydraulic oil effect, now on cylinder sleeve 3 joint 4 and fixed position on piston rod 21 apart from minimum.So, telescoping hydraulic cylinder to-and-fro motion is realized.
Claims (3)
1. telescopic hydraulic oil cylinder, comprise the cylinder barrel (1) of closed at both ends, described cylinder barrel (1) inside is provided with piston (2), cylinder barrel (1) inside is divided into the first oil pocket (11) and the second oil pocket (12) by described piston (2), the piston rod (21) of described piston (2) stretches out from cylinder barrel (1) one end and fixes with pedestal, it is characterized in that, described cylinder barrel (1) outside is also enclosed with can along the reciprocating cylinder sleeve of cylinder barrel (1) axial direction (3), the outer side surface of described cylinder sleeve (3) is provided with joint (4), described cylinder sleeve (3) two ends coordinate with cylinder barrel (1) side clearance and oil seal, on the outer side surface of described cylinder barrel (1), also circumference is provided with limited ring (5), space between cylinder barrel (1) and cylinder sleeve (3) is divided into the 3rd oil pocket (31) and the 4th oil pocket (32) by described limited ring (3), described telescopic hydraulic oil cylinder is also provided with hydraulic circuit.
2. telescopic hydraulic oil cylinder according to claim 1, is characterized in that, described limited ring (5) is arranged on the middle part of cylinder barrel (1) outer side surface, and the length of described cylinder sleeve (3) is the half of cylinder barrel (1) length.
3. telescopic hydraulic oil cylinder according to claim 1 and 2, it is characterized in that, described hydraulic circuit comprises setting the first oil inlet and outlet (61) on the piston rod, and the first oil duct (62) that piston rod inner is axially arranged, described first oil duct (62) is through with the first oil pocket (11), the end cap of described cylinder barrel (1) is provided with the second oil inlet and outlet (63) and the second oil duct (64), described second oil duct (63) is through with the second oil pocket (12), in the sidewall of described cylinder barrel (1), cylinder barrel (1) axial direction is provided with the 3rd oil duct (65), described 3rd oil duct (65) by the second oil pocket (12) and the 4th oil pocket (32) through, the 4th oil duct (66) is also provided with along bore axis direction in the sidewall of described cylinder barrel (1), described 4th oil duct (66) by the first oil pocket (11) and the 3rd oil pocket (31) through.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420735578.7U CN204267423U (en) | 2014-11-27 | 2014-11-27 | Telescopic hydraulic oil cylinder |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420735578.7U CN204267423U (en) | 2014-11-27 | 2014-11-27 | Telescopic hydraulic oil cylinder |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN204267423U true CN204267423U (en) | 2015-04-15 |
Family
ID=52802294
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201420735578.7U Expired - Fee Related CN204267423U (en) | 2014-11-27 | 2014-11-27 | Telescopic hydraulic oil cylinder |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN204267423U (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104405723A (en) * | 2014-11-27 | 2015-03-11 | 无锡润地农林科技有限公司 | Extensible hydraulic oil cylinder |
| CN105020199A (en) * | 2015-08-18 | 2015-11-04 | 英达公路养护工程有限公司 | Double-stroke hydraulic oil cylinder |
| CN111424526A (en) * | 2020-03-04 | 2020-07-17 | 广西翔路建设有限责任公司 | Hydraulic supporting system for corrugated steel web box girder bridge |
-
2014
- 2014-11-27 CN CN201420735578.7U patent/CN204267423U/en not_active Expired - Fee Related
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104405723A (en) * | 2014-11-27 | 2015-03-11 | 无锡润地农林科技有限公司 | Extensible hydraulic oil cylinder |
| CN105020199A (en) * | 2015-08-18 | 2015-11-04 | 英达公路养护工程有限公司 | Double-stroke hydraulic oil cylinder |
| CN111424526A (en) * | 2020-03-04 | 2020-07-17 | 广西翔路建设有限责任公司 | Hydraulic supporting system for corrugated steel web box girder bridge |
| CN111424526B (en) * | 2020-03-04 | 2021-07-06 | 广西北投公路建设投资集团有限公司 | Hydraulic supporting system for corrugated steel web box girder bridge |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN104405723A (en) | Extensible hydraulic oil cylinder | |
| CN202209329U (en) | Double-piston-rod relative motion oil cylinder | |
| CN202301278U (en) | Flexible oil cylinder | |
| CN204267423U (en) | Telescopic hydraulic oil cylinder | |
| CN202280689U (en) | Multistage hydraulic cylinder | |
| CN103256275B (en) | A kind of double acting Hydraulic Cylinder | |
| CN103256273B (en) | Automatic linear double-acting cylinder | |
| CN106678122B (en) | A kind of primary and secondary differential hydro cylinder | |
| CN103994125A (en) | Adjustable bi-directional buffering oil cylinder | |
| CN103671344B (en) | Pumping oil cylinder and comprise the pumping equipment of this pumping oil cylinder | |
| CN202301268U (en) | Hydraulic cylinder | |
| CN206617386U (en) | One kind three acts on telescopic oil cylinder | |
| CN103206425B (en) | Multilevel adjustable hydraulic cylinder | |
| CN103867524B (en) | A kind of double-action two-stage hydraulic cylinder | |
| CN102927078B (en) | A kind of hydraulic jack and there is its pumping mechanism, engineering machinery | |
| CN202031913U (en) | Internally designed oil pipe of hydraulic multi-stage cylinder piston rod | |
| CN102996570A (en) | Single-action double-graded hydraulic cylinder and engineering machine | |
| CN204253496U (en) | Built-in auxiliary oil channel formula double-action two-stage hydraulic cylinder | |
| CN203230653U (en) | Double-acting rapid hydraulic cylinder | |
| CN104653544A (en) | Irregular section type magnetic rodless hydraulic cylinder/ pneumatic cylinder | |
| CN204300013U (en) | A kind of hydraulic jack | |
| CN204253494U (en) | High speed and high pressure injection machine die cylinder | |
| CN202031912U (en) | Clamp key and clamp ring positioning structure of hydraulic multistage cylinder | |
| CN103982474B (en) | Novel gas-liquid power cylinder | |
| CN104405720A (en) | Piston-free reciprocating hydraulic cylinder |
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: 20150415 Termination date: 20191127 |
|
| CF01 | Termination of patent right due to non-payment of annual fee |