CN219492765U - Synchronous action secondary cylinder - Google Patents
Synchronous action secondary cylinder Download PDFInfo
- Publication number
- CN219492765U CN219492765U CN202320104586.0U CN202320104586U CN219492765U CN 219492765 U CN219492765 U CN 219492765U CN 202320104586 U CN202320104586 U CN 202320104586U CN 219492765 U CN219492765 U CN 219492765U
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- oil
- piston
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- cavity
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Abstract
The utility model discloses a synchronous action secondary oil cylinder, which comprises a cylinder body, a rodless cavity oil port, a primary piston cylinder barrel, a primary piston and a primary guide sleeve, wherein the rear end of the primary piston cylinder barrel is fixedly connected with the bottom of the cylinder, and a secondary piston rod, a secondary piston and a secondary guide sleeve are arranged in the primary piston cylinder barrel; a rod cavity oil port is arranged in the secondary guide sleeve; the cylinder bottom is provided with an oil passing hole for communicating the outer circle and the inner cavity of the cylinder bottom, an outer spacer bush is sleeved outside the cylinder barrel of the primary piston and the cylinder bottom, the outer spacer bush is provided with an oil hole for communicating the outer circle and the inner hole of the primary piston, and an inner spacer bush is arranged outside a secondary piston rod in front of the secondary piston; medium oil is arranged in the front cavity of the primary piston, the oil passing hole, the oil hole and the rear cavity of the secondary piston; the utility model has the advantages of simple structure, convenient processing and high response speed of the two-stage piston rod.
Description
Technical Field
The utility model relates to a secondary oil cylinder, in particular to a secondary oil cylinder with a two-stage piston rod capable of synchronously acting.
Background
At present, two-stage piston rods of a two-stage oil cylinder can synchronously extend or retract under many working conditions so as to improve the working efficiency; in order to achieve the purpose, the prior secondary oil cylinder is mainly characterized in that a one-way valve is arranged in a cylinder bottom between a primary piston cylinder barrel and a secondary piston rod, an oil hole is arranged in the primary piston cylinder barrel, when a rodless cavity of the primary piston cylinder barrel is used for oil inlet, the one-way valve is pushed open firstly, hydraulic oil enters a rod cavity of the primary piston cylinder barrel, then the one-way valve is closed, the primary piston cylinder barrel stretches out again, meanwhile, oil in the rod cavity enters a rodless cavity of the secondary piston rod, and the secondary piston rod stretches out; the defects are as follows: the structure is complex, the processing is inconvenient, and the two-stage piston rod stretches out with hysteresis and has low response speed relative to oil inlet time.
Disclosure of Invention
The utility model aims to overcome the defects in the prior art and provide the synchronous action secondary oil cylinder which is simple in structure, convenient to process and high in response speed of the two-stage piston rod.
In order to achieve the aim, the synchronous action secondary oil cylinder comprises a cylinder body, a rodless cavity oil port, a primary piston cylinder barrel, a primary piston and a primary guide sleeve, wherein the rear end of the primary piston cylinder barrel is fixedly connected with a cylinder bottom, and a secondary piston rod, a secondary piston and a secondary guide sleeve are arranged in the primary piston cylinder barrel; the device is characterized in that a rod cavity oil port is arranged in the secondary guide sleeve; the cylinder bottom is provided with an oil passing hole for communicating the outer circle and the inner cavity of the cylinder bottom, an outer spacer bush is sleeved outside the cylinder barrel of the primary piston and the cylinder bottom, the outer spacer bush is provided with an oil hole for communicating the outer circle and the inner hole of the primary piston, and an inner spacer bush is arranged outside a secondary piston rod in front of the secondary piston; medium oil is arranged in the front cavity of the primary piston, the oil passing hole, the oil hole and the rear cavity of the secondary piston.
When the piston rod is used, when the oil port of the rodless cavity is filled with oil, the cylinder barrel of the primary piston extends out, and meanwhile, the primary piston pushes medium oil in the front cavity of the primary piston to enter the rear cavity of the secondary piston, so that the secondary piston rod extends out synchronously; when the oil port of the rod cavity is filled with oil, the second-stage piston rod is retracted, the second-stage piston pushes medium oil of the rear cavity of the second-stage piston to return to the front cavity of the first-stage piston, the first-stage piston cylinder barrel is retracted synchronously, the outer spacer bush and the inner spacer bush can control the stroke of the two-stage piston rod, so that the effective volume of the front cavity of the first-stage piston is ensured to be equal to that of the rear cavity of the second-stage piston, and the full-stroke synchronous action is realized;
the utility model has the advantages of simple structure, convenient processing and high response speed of the two-stage piston rod relative to oil inlet time;
as a further improvement of the utility model, an oil injection hole is arranged in the cylinder body at the rear side of the primary guide sleeve, and the oil injection hole is connected with a plug; the injection of medium oil is convenient;
as a further improvement of the utility model, O-shaped rings are arranged on the inner circles of the outer spacer bush and the inner spacer bush; the sliding of the outer spacer bush and the inner spacer bush can be prevented;
in summary, the utility model has the advantages of simple structure, convenient processing and high response speed of the two-stage piston rod relative to oil inlet time.
Drawings
Fig. 1 is a front view of an embodiment of the present utility model.
Detailed Description
The utility model is described in further detail below with reference to the accompanying drawings.
As shown in fig. 1, the synchronous action secondary oil cylinder of the embodiment comprises a cylinder body 1, a rodless cavity oil port 2, a primary piston cylinder barrel 3, a primary piston 4 and a primary guide sleeve 5, wherein an oil filling hole is arranged in the cylinder body at the rear side of the primary guide sleeve 5, and is connected with a plug 6; the rear end of the primary piston cylinder barrel 3 is welded and fixedly connected with a cylinder bottom 7, and a secondary piston rod 8, a secondary piston 9 and a secondary guide sleeve 10 are arranged in the primary piston cylinder barrel 3; a rod cavity oil port 11 is arranged in the secondary guide sleeve 10; the cylinder bottom 7 is provided with an oil passing hole 12 for communicating the outer circle and the inner cavity of the cylinder bottom 7, the outer spacer bush 13 is sleeved outside the first-stage piston cylinder 3 and the cylinder bottom 7, the outer spacer bush 13 is provided with an oil hole 14 for communicating the outer circle and the inner hole of the outer spacer bush 13, the outer side of the second-stage piston rod 8 in front of the second-stage piston 9 is provided with an inner spacer bush 15, and the inner circles of the outer spacer bush 13 and the inner spacer bush 15 are respectively provided with an O-shaped ring 16 or 17; medium oil 18 is arranged in the front cavity of the primary piston 4, the oil passing hole 12, the oil hole 14 and the rear cavity of the secondary piston 9.
The medium oil 18 is conveniently injected through the oil injection hole and the plug 6; when the piston rod is used, when the oil port 2 of the rodless cavity is used for oil feeding, the cylinder barrel 3 of the primary piston stretches out, and meanwhile, the primary piston 4 pushes medium oil 18 in the front cavity of the primary piston to enter the rear cavity of the secondary piston 9, so that the secondary piston rod 8 stretches out synchronously; when the oil port 11 of the rod cavity is filled with oil, the second-stage piston rod 8 is retracted, the medium oil 18 of the rear cavity of the second-stage piston 9 is pushed to return to the front cavity of the first-stage piston 4, the first-stage piston cylinder 3 is retracted synchronously, the outer spacer bush 13 and the inner spacer bush 15 can control the stroke of the two-stage piston rod, the effective volume of the front cavity of the first-stage piston is ensured to be equal to the effective volume of the rear cavity of the second-stage piston through a test, the synchronous action of the full stroke is realized, otherwise, the sectional areas of the front cavity of the first-stage piston and the rear cavity of the second-stage piston need to be calculated and processed accurately, and the difficulty is increased;
the utility model has the advantages of simple structure, convenient processing and high response speed of the two-stage piston rod relative to oil inlet time; the O-shaped rings 16 and 17 can prevent the outer spacer 13 and the inner spacer 15 from sliding and avoid abnormal sound.
Claims (3)
1. The synchronous action secondary oil cylinder comprises a cylinder body, a rodless cavity oil port, a primary piston cylinder barrel, a primary piston and a primary guide sleeve, wherein the rear end of the primary piston cylinder barrel is fixedly connected with the cylinder bottom, and a secondary piston rod, a secondary piston and a secondary guide sleeve are arranged in the primary piston cylinder barrel; the device is characterized in that a rod cavity oil port is arranged in the secondary guide sleeve; the cylinder bottom is provided with an oil passing hole for communicating the outer circle and the inner cavity of the cylinder bottom, an outer spacer bush is sleeved outside the cylinder barrel of the primary piston and the cylinder bottom, the outer spacer bush is provided with an oil hole for communicating the outer circle and the inner hole of the primary piston, and an inner spacer bush is arranged outside a secondary piston rod in front of the secondary piston; medium oil is arranged in the front cavity of the primary piston, the oil passing hole, the oil hole and the rear cavity of the secondary piston.
2. The synchronous action secondary cylinder as claimed in claim 1, wherein the cylinder body at the rear side of the primary guide sleeve is internally provided with an oil filling hole, and the oil filling hole is connected with a plug.
3. A synchronous action secondary cylinder as claimed in claim 1 or claim 2 wherein the inner circles of the outer and inner spacers are provided with O-rings.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202320104586.0U CN219492765U (en) | 2023-02-02 | 2023-02-02 | Synchronous action secondary cylinder |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202320104586.0U CN219492765U (en) | 2023-02-02 | 2023-02-02 | Synchronous action secondary cylinder |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN219492765U true CN219492765U (en) | 2023-08-08 |
Family
ID=87510388
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202320104586.0U Active CN219492765U (en) | 2023-02-02 | 2023-02-02 | Synchronous action secondary cylinder |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN219492765U (en) |
-
2023
- 2023-02-02 CN CN202320104586.0U patent/CN219492765U/en active Active
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