CN210423223U - Synchronous telescopic double-rod oil cylinder - Google Patents
Synchronous telescopic double-rod oil cylinder Download PDFInfo
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- CN210423223U CN210423223U CN201921142753.0U CN201921142753U CN210423223U CN 210423223 U CN210423223 U CN 210423223U CN 201921142753 U CN201921142753 U CN 201921142753U CN 210423223 U CN210423223 U CN 210423223U
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Abstract
The utility model relates to a synchronous telescopic double-rod-outlet oil cylinder, which consists of a guide sleeve, a cylinder barrel, a piston rod, a piston and a limiting block, wherein the cylinder barrel is in an integral round tube shape, the middle part of the cylinder barrel is provided with a rodless cavity oil inlet, and the two ends of the cylinder barrel are provided with rod cavity oil inlets; the limiting block is positioned in the middle of the inner wall of the cylinder barrel, and an oil inlet hole is formed in the side wall of the limiting block and corresponds to an oil inlet of a rodless cavity of the cylinder barrel; the guide sleeves are arranged at openings at two ends of the cylinder barrel; two ends of the cylinder barrel are provided with two piston rods, and one end of each piston rod, which is positioned in the cylinder barrel, is fixed with a piston. The utility model has the advantages that: the cylinder barrel adopts an integral structure design, compared with the prior art, the structure is compact, the form and position tolerance machining precision such as straightness accuracy and coaxiality is higher, the sealing performance and the use reliability of the oil cylinder are higher, meanwhile, the cylinder barrel is simple and efficient to machine, and the machining cost is greatly reduced.
Description
Technical Field
The utility model belongs to the technical field of hydraulic cylinder, in particular to synchronous flexible two play pole hydro-cylinders.
Background
In the design of current hydraulic cylinder, two play pole hydro-cylinders are common has two kinds of structural design: a structure of a double-rod oil cylinder is characterized in that two oil cylinders are welded and fixed together through a connecting plate, and then large and small cavities of the two oil cylinders are connected in series to realize synchronous extension and retraction of the oil cylinders; the other double-rod oil cylinder has the structure that the cylinder bottoms of the two cylinder barrels are connected together through welding, a rodless cavity is shared, and the synchronous extension of the oil cylinders is realized. The current structural design has high processing cost, difficult guarantee of precision requirement and lower safe reliability of operation.
SUMMERY OF THE UTILITY MODEL
The utility model aims to overcome the problem that exists in the current two pole hydro-cylinder structural design techniques, provide a simple structure, the higher synchronous flexible two pole hydro-cylinders of reliability.
In order to achieve the above purpose, the utility model adopts the following technical scheme: a synchronous telescopic double-rod-outlet oil cylinder comprises a guide sleeve, a cylinder barrel, a piston rod, a piston and a limiting block, wherein the cylinder barrel is in an integral round tube shape, the middle part of the cylinder barrel is provided with a rodless cavity oil inlet, and two ends of the cylinder barrel are provided with two rod cavity oil inlets; the limiting block is in a hollow cylindrical shape and is positioned in the middle of the inner wall of the cylinder barrel, and an oil inlet hole is formed in the side wall of the limiting block and corresponds to an oil inlet of a rodless cavity of the cylinder barrel; the guide sleeve is in a circular tube shape, the guide sleeve is arranged at openings at two ends of the cylinder barrel, and the outer wall of the guide sleeve is in threaded fit connection with the inner wall of the cylinder barrel; two ends of the cylinder barrel are provided with two piston rods, the outer circle surface of each piston rod slides in contact with the inner wall of the guide sleeve, sealing is realized by adopting a sealing ring, and a piston is fixed at one end of each piston rod, which is positioned in the cylinder barrel; the outer surface of the piston slides in contact with the inner wall of the cylinder barrel, and the outer surface of the piston and the inner wall of the cylinder barrel, the inner surface of the piston and the outer surface of the piston rod are sealed by sealing rings.
The working principle is as follows:
when the oil inlet of the rodless cavity oil port is performed, the oil pushes the two pistons to drive the piston rods to synchronously extend outwards; when oil is fed from the oil ports of the two rod cavities, the oil pushes the two pistons to drive the piston rods to retract synchronously.
The utility model has the advantages that: the cylinder barrel of the synchronous telescopic double-rod oil cylinder is designed in an integral structure, compared with the prior art, the structure is more compact, the form and position tolerance machining precision such as straightness accuracy and coaxiality is higher, the sealing performance and the use reliability of the oil cylinder are higher, meanwhile, the cylinder barrel is simpler and more efficient to machine, and the machining cost is greatly reduced.
Drawings
Fig. 1 is a schematic structural diagram of an embodiment of the present invention.
In the figure: 1-guide sleeve, 2-cylinder, 21-rod cavity oil port, 22-rodless cavity oil port, 3-piston rod, 4-piston, 5-limited block, 51-oil inlet.
Detailed Description
The technical solution of the present invention is further described in detail below with reference to the following embodiments and the accompanying drawings:
referring to fig. 1, the synchronous telescopic double-rod-outlet oil cylinder comprises a guide sleeve 1, a cylinder barrel 2, a piston rod 3, a piston 4 and a limiting block 5, wherein the cylinder barrel 2 is in an integral round tube shape, the middle part of the cylinder barrel 2 is provided with a rod cavity-free oil inlet 22, and two ends of the cylinder barrel 2 are provided with two rod cavity oil inlets 21; the limiting block 5 is in a hollow cylindrical shape, the limiting block 5 is located in the middle of the inner wall of the cylinder barrel 2, the limiting block 5 is connected with the inner wall of the cylinder barrel 2 in a welding mode, and an oil inlet 51 is formed in the side wall of the limiting block 5 and corresponds to the rodless cavity oil inlet 22 of the cylinder barrel 2; the guide sleeve 1 is in a circular tube shape, the guide sleeve 1 is arranged at openings at two ends of the cylinder barrel 2, and the outer wall of the guide sleeve 1 is connected with the inner wall of the cylinder barrel 2 in a threaded fit manner; two ends of the cylinder barrel 2 are provided with two piston rods 3, the outer circle surfaces of the piston rods 3 and the inner wall of the guide sleeve 1 are sealed by sealing rings, one end of each piston rod 3, which is positioned in the cylinder barrel 2, is fixedly provided with a piston 4, and the piston rods 3 and the pistons 4 are connected by threads; and the outer surface of the piston 4 and the inner wall of the cylinder barrel 2, the inner surface of the piston 4 and the outer surface of the piston rod 3 are sealed by sealing rings.
While the foregoing is directed to the preferred embodiment of the present invention, it will be understood by those skilled in the art that various changes and modifications may be made without departing from the principles of the invention, and it is intended to cover all such changes and modifications as fall within the scope of the invention.
Claims (1)
1. The utility model provides a synchronous flexible two play pole hydro-cylinders, includes uide bushing, cylinder, piston rod, piston and stopper, its characterized in that: the cylinder barrel is in an integral circular tube shape, the middle of the cylinder barrel is provided with a rodless cavity oil inlet, and two ends of the cylinder barrel are provided with two rod cavity oil inlets; the limiting block is in a hollow cylindrical shape and is positioned in the middle of the inner wall of the cylinder barrel, and an oil inlet hole is formed in the side wall of the limiting block and corresponds to an oil inlet of a rodless cavity of the cylinder barrel; the guide sleeve is in a circular tube shape, the guide sleeve is arranged at openings at two ends of the cylinder barrel, and the outer wall of the guide sleeve is in threaded fit connection with the inner wall of the cylinder barrel; two piston rods are arranged at two ends of the cylinder barrel, the outer circle surfaces of the piston rods slide in contact with the inner wall of the guide sleeve, sealing is realized by adopting a sealing ring, and a piston is fixed at one end of each piston rod, which is positioned in the cylinder barrel; the outer surface of the piston slides in contact with the inner wall of the cylinder barrel, and the outer surface of the piston and the inner wall of the cylinder barrel, the inner surface of the piston and the outer surface of the piston rod are sealed by sealing rings.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201921142753.0U CN210423223U (en) | 2019-07-20 | 2019-07-20 | Synchronous telescopic double-rod oil cylinder |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201921142753.0U CN210423223U (en) | 2019-07-20 | 2019-07-20 | Synchronous telescopic double-rod oil cylinder |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN210423223U true CN210423223U (en) | 2020-04-28 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201921142753.0U Active CN210423223U (en) | 2019-07-20 | 2019-07-20 | Synchronous telescopic double-rod oil cylinder |
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| CN (1) | CN210423223U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110230623A (en) * | 2019-07-20 | 2019-09-13 | 蚌埠液力机械有限公司 | A kind of synchronization telescope double-outlet cylinder |
-
2019
- 2019-07-20 CN CN201921142753.0U patent/CN210423223U/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110230623A (en) * | 2019-07-20 | 2019-09-13 | 蚌埠液力机械有限公司 | A kind of synchronization telescope double-outlet cylinder |
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