CN209908892U - Combined stroke type relay propulsion oil cylinder structure - Google Patents
Combined stroke type relay propulsion oil cylinder structure Download PDFInfo
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- CN209908892U CN209908892U CN201920740838.2U CN201920740838U CN209908892U CN 209908892 U CN209908892 U CN 209908892U CN 201920740838 U CN201920740838 U CN 201920740838U CN 209908892 U CN209908892 U CN 209908892U
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- 238000007789 sealing Methods 0.000 claims abstract description 4
- 239000003921 oil Substances 0.000 claims description 24
- 239000010727 cylinder oil Substances 0.000 claims description 18
- 238000009434 installation Methods 0.000 abstract description 9
- 238000004519 manufacturing process Methods 0.000 description 3
- 238000000034 method Methods 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 230000009975 flexible effect Effects 0.000 description 1
- 239000010720 hydraulic oil Substances 0.000 description 1
- 230000003993 interaction Effects 0.000 description 1
- 238000012423 maintenance Methods 0.000 description 1
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Abstract
The utility model discloses a combination stroke formula relay propulsion cylinder structure belongs to pneumatic cylinder technical field. The double-piston type hydraulic cylinder comprises an outer cylinder barrel, wherein double outlet rods are arranged in the outer cylinder barrel, a large piston is arranged in the outer cylinder barrel in a sliding fit manner, and the large piston is fixedly arranged on the double outlet rods; the double-outlet rod is a hollow rod, a piston rod is arranged in the double-outlet rod, a small piston is arranged in the double-outlet rod in a sliding fit mode, and the small piston is fixedly arranged at the inner end of the piston rod. The utility model superposes the two-stage oil cylinders by the action of the double-rod bearing and the double-rod bearing, and the stroke combination reduces the installation distance of the whole structure, lengthens the stroke and realizes equal thrust propulsion; the double-out rod is always matched with the two ends of the outer cylinder barrel, so that the integral side load resistance is enhanced; the double-rod structure enables the mounting distance to be adjusted randomly within a short stroke range, is convenient and quick and is not influenced by the precision of a main machine structural member; the two-stage oil cylinder adopts an independent oil circuit structure, only the parts of the stage need to be disassembled when the sealing is maintained and replaced, and the cylinder is more convenient to disassemble and replace.
Description
Technical Field
The utility model relates to a pneumatic cylinder technical field specifically is a combination stroke formula relay thrust cylinder structure.
Background
The pushing hydraulic cylinder is used as an actuating element of the hydraulic system, has the characteristics of simple structure, flexible action, capability of bearing large pushing force and the like, and is widely used in engineering machinery. At present, a single-stage oil cylinder is basically used for a propulsion hydraulic cylinder, the occupied space is large, but a small installation distance is needed due to the narrow working environment of many projects, the load distance requirement is not changed, and in order to meet the requirement, the multi-stage hydraulic cylinder with equal thrust is mostly used, the design and the processing are complex, and the cost is high. Moreover, the anti-lateral load capacity of the multi-stage cylinder structure is poor during long-stroke propelling, and the working efficiency and the safety of equipment are affected. Therefore, most of the existing methods use multi-stage cylinders to extend step by step to achieve the purpose of short installation distance and long stroke, and simultaneously use guide rails to guide to realize the unbalance loading resistance.
But it has problems that:
the guide rail for the multi-stage cylinder has poor guiding capability, is influenced by the straightness of the guide rail and the fit clearance, has large deviation, is difficult to realize the accurate positioning of the movement position, is easy to be influenced by the load, and has poor stability and lateral load resistance. Moreover, although it is feasible to realize equal thrust by using multi-stage cylinders, the design and manufacture difficulty is high, the process is complex, the cost is high, and the adjustment cannot be carried out at will. In addition, the existing multi-stage cylinder technology cannot be guaranteed in the occasions requiring high thrust on the engineering machinery main machine.
Disclosure of Invention
To solve the above technical problem, the present invention provides a combined stroke type relay propulsion cylinder structure. The utility model discloses a pneumatic cylinder stack with two strokes of length makes up into a double-stroke pneumatic cylinder, reduces installation space, shortens installation distance, realizes the requirement of equal thrust, anti side year, reaches the purpose of guaranteeing the work of host computer high efficiency.
The utility model discloses a following technical scheme realizes: a combined stroke type relay propulsion oil cylinder structure comprises an outer cylinder barrel, wherein double output rods are arranged in the outer cylinder barrel, a large piston is arranged in the outer cylinder barrel in a sliding fit mode, and the large piston is fixedly arranged on the double output rods; the double-outlet rod is a hollow rod, a piston rod is arranged in the double-outlet rod, a small piston is arranged in the double-outlet rod in a sliding fit mode, and the small piston is fixedly arranged at the inner end of the piston rod.
It further comprises the following steps: the rear end of the outer cylinder barrel is fixedly provided with a rear large guide sleeve, and the rear large guide sleeve is arranged on the double-outlet rod in a sliding fit manner; the front end of the outer cylinder barrel is fixedly provided with a front large guide sleeve, and the front large guide sleeve is arranged on the double-outlet rod in a sliding fit manner.
The rear end of the outer cylinder barrel is provided with an outer cylinder oil inlet, and the front end of the outer cylinder barrel is provided with an outer cylinder oil outlet.
The rear end of the double-outlet rod is fixedly connected with a cylinder bottom in a sealing way; the front end of the double-outlet rod is fixedly provided with a small guide sleeve, and the small guide sleeve is arranged on the piston rod in a sliding fit manner.
The rear end of the double-outlet rod is provided with an inner cylinder oil inlet, and the front end of the double-outlet rod is provided with an inner cylinder oil outlet.
The middle position of the double-outlet rod is provided with a step spigot, and the large piston is fixedly arranged at the step spigot on the double-outlet rod.
The utility model discloses a two-stage combination stroke structure, big, little stroke are with the strength propulsion step by step. The double-outlet rod is a fixed piston rod of the large piston and a cylinder barrel connected with the small guide sleeve, and plays a role in carrying and converting up and down. The two-stage oil circuit realizes balance through the principle that the interaction force acting on the same object is equal, achieves the purpose of same-force pushing, greatly shortens the installation distance of the whole structure, and meets the purpose of small-space long-stroke same-force pushing.
Compared with the prior art, the beneficial effects of the utility model are that:
(1) the two-stage oil cylinders are overlapped under the action of the upper part and the lower part of the double-out-rod bearing, and the stroke is combined, so that the installation distance of the whole structure is reduced, and the stroke is lengthened; the double-out rod is always matched with the two ends of the outer cylinder barrel, so that the integral side load resistance is enhanced;
(2) the double-rod structure enables the cylinder barrel to enable the mounting distance to be adjusted randomly within a short stroke range, is convenient and quick and is not influenced by the precision of main machine structural parts;
(3) the two-stage oil cylinder adopts an independent oil circuit structure, only the parts of the stage need to be disassembled when the sealing is maintained and replaced, and the cylinder is more convenient to disassemble and replace;
(4) the whole design is simple, the manufacture is convenient, and the equal thrust propulsion is realized.
Drawings
FIG. 1 is a schematic structural view of the present invention;
fig. 2 is a schematic view of the double-rod 1 of the present invention after being pushed out;
in the figure: 1-double outlet rod, 2-small piston, 3-rear large guide sleeve, 4-large piston, 5-outer cylinder barrel, 6-piston rod, 7-front large guide sleeve and 8-small guide sleeve.
Detailed Description
The following is a specific embodiment of the present invention, which will be further described with reference to the accompanying drawings.
As shown in figures 1 and 2, the combined stroke relay propulsion oil cylinder structure is characterized in that an installation flange structure is arranged outside an outer cylinder 5, a large piston 4 is installed in the outer cylinder 5 in a sliding fit mode, a rear large guide sleeve 3 is fixedly installed at the rear end of the outer cylinder 5, and a front large guide sleeve 7 is fixedly installed at the front end of the outer cylinder 5. The rear large guide sleeve 3 and the outer cylinder 5 are sleeved on the double-outlet rod 1 in a sliding fit manner. The middle position of the double-outlet rod 1 is provided with a step rabbet, and the large piston 4 is fixedly arranged at the step rabbet on the double-outlet rod 1. The step rabbets on the double-outlet rod 1 ensure that the large piston 4 can be conveniently and fixedly installed while bearing the internal pressure. The rear end of the outer cylinder barrel 5 is provided with an outer cylinder oil inlet, and the front end of the outer cylinder barrel 5 is provided with an outer cylinder oil outlet. The outer cylinder oil inlet and the outer cylinder oil outlet are respectively communicated with the large cavity and the small cavity of the outer cylinder barrel 5, the telescopic motion of the double-outlet rod 1 is realized through oil inlet oil return, and the telescopic motion and the locking of the double-outlet rod are realized according to requirements.
The double-outlet rod 1 is a hollow rod, and the double-outlet rod 1 is used as a fixed piston rod of the outer cylinder barrel 5 and also used as a cylinder barrel outside the piston rod 6; a small piston 2 is arranged in the double-outlet rod 1 in a sliding fit mode, and the small piston 2 is fixedly arranged at the inner end of the piston rod 6. The rear end of the double-outlet rod 1 is sealed and fixed at the bottom of the cylinder, and the front end of the double-outlet rod 1 is fixedly provided with a small guide sleeve 8. The small guide sleeve 8 is arranged on the piston rod 6 in a sliding fit manner. The rear end of the double output rod 1 is provided with an inner cylinder oil inlet, and the front end of the double output rod 1 is provided with an inner cylinder oil outlet. The inner cylinder oil inlet and the inner cylinder oil outlet are respectively communicated with the large cavity and the small cavity in the double-outlet rod 1, and the telescopic motion of the piston rod 6 is realized through oil inlet and oil return.
The working principle is as follows:
an outer cylinder oil inlet and an outer cylinder oil outlet on the outer cylinder barrel 5 are communicated, and the large piston 4 is pushed to move towards the front large guide sleeve 7;
the large piston 4 is fixed with the double-outlet rod 1, so that the double-outlet rod 1 moves along with the large piston 4 and simultaneously drives the small piston 2 and the piston rod 6 inside to be pushed out together;
when the large piston 4 moves to the large guide sleeve 7, full stroke locking is realized;
switching oil ways;
the oil inlet of the inner cylinder and the oil outlet of the inner cylinder on the double-outlet rod 1 are communicated,
the small piston 2 drives the piston rod 6 to continue to push out until the small piston 2 is contacted with the small guide sleeve 8, so that combined stroke relay propulsion is realized;
the thrust when the piston rod 6 is pushed out acts on the double-outlet rod 1 through hydraulic oil, the double-outlet rod 1 is pushed by the large piston 4, the two forces are equal in magnitude and opposite in direction, and two-stage co-force pushing is achieved.
The above embodiments can be seen in: the utility model ensures equal thrust of the two-stage structure, has short installation distance and can be adjusted steplessly in a certain range; the side load resistance is strong during the large-load propulsion of the short stroke (the outer cylinder barrel 5), the long stroke (the double-rod 1) oil cylinder is locked after the short stroke is finished, the oil circuit is directly switched to realize the same-load long-stroke propulsion, and the same-load long-stroke propulsion reaches the designated position.
The utility model meets the requirements of short mounting distance, long stroke, equal thrust and high stability of the propulsion oil cylinder; the oil circuit switches, convenient and fast, simple structure, and occupation space is little, and the design is dismantled conveniently, does benefit to the adjustment of maintenance and thrust stability ability, has reduced the processing degree of difficulty moreover, easily manufacturing.
Claims (6)
1. A combination stroke formula relay propulsion cylinder structure which characterized in that:
the double-piston type hydraulic cylinder comprises an outer cylinder barrel (5), wherein double outlet rods (1) are arranged in the outer cylinder barrel (5), a large piston (4) is arranged in the outer cylinder barrel (5) in a sliding fit manner, and the large piston (4) is fixedly arranged on the double outlet rods (1);
the double-outlet rod (1) is a hollow rod, a piston rod (6) is installed in the double-outlet rod (1), a small piston (2) is installed in the double-outlet rod (1) in a sliding fit mode, and the small piston (2) is fixedly installed at the inner end of the piston rod (6).
2. The combination stroke type relay propulsion oil cylinder structure according to claim 1, characterized in that: the rear end of the outer cylinder barrel (5) is fixedly provided with a rear large guide sleeve (3), and the rear large guide sleeve (3) is arranged on the double-outlet rod (1) in a sliding fit manner; the front end of the outer cylinder barrel (5) is fixedly provided with a front large guide sleeve (7), and the front large guide sleeve (7) is arranged on the double-outlet rod (1) in a sliding fit manner.
3. The combination stroke type relay propulsion oil cylinder structure according to claim 1, characterized in that: the rear end of the outer cylinder barrel (5) is provided with an outer cylinder oil inlet, and the front end of the outer cylinder barrel (5) is provided with an outer cylinder oil outlet.
4. The combination stroke type relay propulsion oil cylinder structure according to claim 1, characterized in that: the rear end of the double-outlet rod (1) is fixedly connected with a cylinder bottom in a sealing way; the front end of the double-outlet rod (1) is fixedly provided with a small guide sleeve (8), and the small guide sleeve (8) is arranged on the piston rod (6) in a sliding fit manner.
5. The combination stroke type relay propulsion oil cylinder structure according to claim 1, characterized in that: the rear end of the double-outlet rod (1) is provided with an inner cylinder oil inlet, and the front end of the double-outlet rod (1) is provided with an inner cylinder oil outlet.
6. The combination stroke type relay propulsion oil cylinder structure according to claim 1, characterized in that: the middle position of the double-outlet rod (1) is provided with a step spigot, and the large piston (4) is fixedly arranged at the step spigot on the double-outlet rod (1).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201920740838.2U CN209908892U (en) | 2019-05-22 | 2019-05-22 | Combined stroke type relay propulsion oil cylinder structure |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201920740838.2U CN209908892U (en) | 2019-05-22 | 2019-05-22 | Combined stroke type relay propulsion oil cylinder structure |
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| Publication Number | Publication Date |
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| CN209908892U true CN209908892U (en) | 2020-01-07 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN201920740838.2U Active CN209908892U (en) | 2019-05-22 | 2019-05-22 | Combined stroke type relay propulsion oil cylinder structure |
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Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113864285A (en) * | 2021-09-30 | 2021-12-31 | 中船重工中南装备有限责任公司 | Double-acting feeding oil cylinder of digging and anchoring machine |
| CN113953583A (en) * | 2021-11-05 | 2022-01-21 | 江苏大隆凯科技有限公司 | Two-section oil cylinder pushing mechanism of gantry shearing machine |
| CN114658723A (en) * | 2022-05-26 | 2022-06-24 | 成都东华卓越科技有限公司 | Dynamic and static composite oil cylinder with independent dynamic and static liquid paths |
| CN115773295A (en) * | 2022-11-24 | 2023-03-10 | 中国铁建重工集团股份有限公司 | Anti-eccentric load hydraulic cylinder with adjustable stroke |
| CN116044320A (en) * | 2023-03-03 | 2023-05-02 | 新疆格瑞迪斯石油技术股份有限公司 | A double-stage hydraulic cylinder telescopic riser assembly structure and method |
-
2019
- 2019-05-22 CN CN201920740838.2U patent/CN209908892U/en active Active
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113864285A (en) * | 2021-09-30 | 2021-12-31 | 中船重工中南装备有限责任公司 | Double-acting feeding oil cylinder of digging and anchoring machine |
| CN113953583A (en) * | 2021-11-05 | 2022-01-21 | 江苏大隆凯科技有限公司 | Two-section oil cylinder pushing mechanism of gantry shearing machine |
| CN114658723A (en) * | 2022-05-26 | 2022-06-24 | 成都东华卓越科技有限公司 | Dynamic and static composite oil cylinder with independent dynamic and static liquid paths |
| CN115773295A (en) * | 2022-11-24 | 2023-03-10 | 中国铁建重工集团股份有限公司 | Anti-eccentric load hydraulic cylinder with adjustable stroke |
| CN116044320A (en) * | 2023-03-03 | 2023-05-02 | 新疆格瑞迪斯石油技术股份有限公司 | A double-stage hydraulic cylinder telescopic riser assembly structure and method |
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