CN202971408U - Internal bidirectional telescopic oil cylinder - Google Patents
Internal bidirectional telescopic oil cylinder Download PDFInfo
- Publication number
- CN202971408U CN202971408U CN 201220579510 CN201220579510U CN202971408U CN 202971408 U CN202971408 U CN 202971408U CN 201220579510 CN201220579510 CN 201220579510 CN 201220579510 U CN201220579510 U CN 201220579510U CN 202971408 U CN202971408 U CN 202971408U
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- piston rod
- inner casing
- cylinder
- flange
- cylinder piston
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Abstract
The utility model discloses an internal bidirectional telescopic oil cylinder, which comprises an outer cylinder and two flange cylinder covers, wherein the two flange cylinder covers are respectively arranged at both ends of the outer cylinder; an outer cylinder piston rod is sheathed in the outer cylinder; the closed end of the outer cylinder piston rod extends from the flange cylinder cover at one of both ends of the outer cylinder; the outer wall of the outer cylinder piston rod is provided with an annular flange piston near the open end of the outer cylinder piston rod; the two flange cylinder covers at both ends of the outer cylinder are respectively provided with an oil inlet/outlet pipe communicated with the interior and the exterior of a cylinder block of the outer cylinder; the outer cylinder piston rod is in a hollow tube shape; the hollow part of the outer cylinder piston rod is sheathed with an inner cylinder along the axial direction of the outer cylinder piston rod; the inner cylinder is fixedly arranged on the right flange cylinder cover; the extending direction of an inner cylinder piston rod sheathed with the inner cylinder is opposite to that of the outer cylinder piston rod; the left end of the inner cylinder is communicated with the hollow cavity of the outer cylinder piston rod; and the right end of the inner cylinder is provided with an inner cylinder oil inlet/outlet oil pipe. Compared with the prior art, as the inner cylinder is sheathed in the outer cylinder piston rod, and the inner cylinder and the outer cylinder piston rod are opposite in direction of motion, the dilatability is high, and the lift torque is high. Moreover, cylinder blocks are sheathed with each other, so that the size is small.
Description
Technical field
The utility model relates to the oil cylinder technical field, especially a kind of built-in bi-directional expansion oil cylinder.
Background technique
Hydraulic jack is most important executive component in hydraulic system, and it converts hydraulic energy to mechanical energy, and matches with various driving mechanisms, completes various mechanical motion.Along with the raising of mechanization degree, structure, quality and the volume of hydraulic jack are also had higher requirement; Traditional assembled hydraulic oil cylinder is combined by conventional oil cylinder for realizing many actions, have that volume is large, oil pipe many and range of lift only for 1:2 with interior shortcoming, be unfavorable for that equipment is to simplifying, miniaturization and integrated direction development.For example, when the retraction type jack is used for automobile, because stretching of jack is highly limited, often in the work of detaching tyre, because of the lifting insufficient space, needs underbed separately, then promote, often also need to adjust trouble very during falling.
The model utility content
The utility model provides a kind of built-in bi-directional expansion oil cylinder, and it can solve, and existing oil cylinder volume is large, flexible highly limited problem.
in order to solve the problems of the technologies described above, the technological scheme that the utility model adopts is: include outer shell and be located at the flange cylinder cap at outer shell two ends, described outer inner cylinder sleeve has internal cylinder piston rod, the closed end of this internal cylinder piston rod from described outer shell wherein the flange cylinder cap of an end stretch out, described internal cylinder piston rod outer wall is provided with the annular flange flange piston near its open end place, be respectively equipped with on the flange cylinder cap at described outer shell two ends and be communicated with the inside and outside turnover oil pipe of described outer shell cylinder body, described internal cylinder piston rod is hollow tube-shape, its hollow portion axially overlaps along internal cylinder piston rod an inner casing, described inner casing is to be fixed in right flange cylinder cap, the interior cylinder piston rod of inner casing socket stretches out direction and internal cylinder piston rod is stretched out opposite direction, the left end of inner casing is communicated with the hollow cavity of internal cylinder piston rod, described inner casing right-hand member has inner casing turnover oil pipe.
In technique scheme, scheme can also be more specifically: between described inner casing and described interior cylinder piston rod, cover has inferior inner casing, the open end direction of this time inner casing is consistent with the open end direction of described inner casing, the open end of described inner casing is connected with the rotary flange cylinder cap, and the turnover oil pipe of described inner casing is contained on described rotary flange end cap; Described time inner casing is provided with the annular flange flange piston near inner place.
Further: the left end of described inner casing has through hole, and this through hole is the intercommunicating pore of the hollow cavity of the left end of inner casing and internal cylinder piston rod.
Further: the left end of described inner casing has through hole, and this through hole is the left end of time inner casing and the intercommunicating pore of inner casing inner chamber.
Further: described inner casing turnover oil pipe is out on right flange cylinder cap.
Owing to having adopted technique scheme, the utility model compared with prior art has following beneficial effect:
1, because the internal cylinder piston rod inner sleeve has inner casing, and inner casing is opposite with the moving direction of internal cylinder piston rod, so dilatability is large, promote apart from high, and cylinder body overlaps mutually, and volume is little.
2, between the piston rod of inner casing and inner casing also the cover inferior inner casing is arranged, this time inner casing also can stretch, and therefore, can increase exponentially the lifting distance, satisfies people's demand.
Description of drawings
Accompanying drawing 1 is the utility model embodiment 1 structural representation.
Accompanying drawing 2 is structural representations of the utility model embodiment 2.
Embodiment
Below in conjunction with the accompanying drawing example, the utility model is described in further detail:
The present embodiment 2 as shown in Figure 2, embodiment's 2 difference from Example 1 are: between inner casing 8 and described interior cylinder piston rod 9, cover has inferior inner casing 15, the open end direction 15-1 of this time inner casing is consistent with the open end 8-1 direction of inner casing 8, the open end 15-1 of inferior inner casing 15 is connected with rotary flange cylinder cap 17, and the turnover oil pipe 18 of inferior inner casing 15 is contained on described rotary flange end cap 17; Inferior inner casing 15 is provided with annular flange flange piston 19 near inner place.
Between inner casing 8 and piston rod 9, cover has inferior inner casing 15, the open end 15-1 direction of this time inner casing is consistent with the open end 8-1 direction of inner casing 8, inferior inner casing 15 is connected with inner casing 8 by the inferior inner casing oil inlet hole 16 that its inner is provided with, the open end 15-1 of inferior inner casing 15 is connected with rotary flange 17, the turnover oil pipe 18 of inferior inner casing 15 is contained on rotary flange 17, inferior inner casing 15 is provided with annular flange flange 19 near inner place, the left end of inferior inner casing 15 has through hole, and this through hole is the left end of time inner casing 15 and the intercommunicating pore 16 of inner casing inner chamber.
Claims (5)
1. built-in bi-directional expansion oil cylinder, include outer shell and be located at the flange cylinder cap at outer shell two ends, described outer inner cylinder sleeve has internal cylinder piston rod, the closed end of this internal cylinder piston rod from described outer shell wherein the flange cylinder cap of an end stretch out, described internal cylinder piston rod outer wall is provided with the annular flange flange piston near its open end place, be respectively equipped with on the flange cylinder cap at described outer shell two ends and be communicated with the inside and outside turnover oil pipe of described outer shell cylinder body, it is characterized in that: described internal cylinder piston rod is hollow tube-shape, its hollow portion axially overlaps along internal cylinder piston rod an inner casing, described inner casing is to be fixed in right flange cylinder cap, the interior cylinder piston rod of inner casing socket stretches out direction and internal cylinder piston rod is stretched out opposite direction, the left end of inner casing is communicated with the hollow cavity of internal cylinder piston rod, described inner casing right-hand member has inner casing turnover oil pipe.
2. built-in bi-directional expansion oil cylinder according to claim 1, it is characterized in that: between described inner casing and described interior cylinder piston rod, cover has inferior inner casing, the open end direction of this time inner casing is consistent with the open end direction of described inner casing, the open end of described inner casing is connected with the rotary flange cylinder cap, and the turnover oil pipe of described inner casing is contained on described rotary flange end cap; Described time inner casing is provided with the annular flange flange piston near inner place.
3. built-in bi-directional expansion oil cylinder according to claim 1, it is characterized in that: the left end of described inner casing has through hole, and this through hole is the intercommunicating pore of the hollow cavity of the left end of inner casing and internal cylinder piston rod.
4. built-in bi-directional expansion oil cylinder according to claim 2, it is characterized in that: the left end of described inner casing has through hole, and this through hole is the left end of time inner casing and the intercommunicating pore of inner casing inner chamber.
5. built-in bi-directional expansion oil cylinder according to claim 1 is characterized in that: described inner casing turnover oil pipe is out on right flange cylinder cap.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201220579510 CN202971408U (en) | 2012-11-06 | 2012-11-06 | Internal bidirectional telescopic oil cylinder |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201220579510 CN202971408U (en) | 2012-11-06 | 2012-11-06 | Internal bidirectional telescopic oil cylinder |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN202971408U true CN202971408U (en) | 2013-06-05 |
Family
ID=48512492
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 201220579510 Expired - Fee Related CN202971408U (en) | 2012-11-06 | 2012-11-06 | Internal bidirectional telescopic oil cylinder |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN202971408U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113323400A (en) * | 2021-05-24 | 2021-08-31 | 合肥工业大学 | Concrete vibrating device and using method thereof |
-
2012
- 2012-11-06 CN CN 201220579510 patent/CN202971408U/en not_active Expired - Fee Related
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113323400A (en) * | 2021-05-24 | 2021-08-31 | 合肥工业大学 | Concrete vibrating device and using method thereof |
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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: 20130605 Termination date: 20151106 |
|
| EXPY | Termination of patent right or utility model |