CN117212284A - Constant temperature oil cylinder with core pipe structure - Google Patents
Constant temperature oil cylinder with core pipe structure Download PDFInfo
- Publication number
- CN117212284A CN117212284A CN202311172727.3A CN202311172727A CN117212284A CN 117212284 A CN117212284 A CN 117212284A CN 202311172727 A CN202311172727 A CN 202311172727A CN 117212284 A CN117212284 A CN 117212284A
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- Prior art keywords
- cylinder
- piston rod
- core tube
- sleeve
- oil cylinder
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- 238000007789 sealing Methods 0.000 claims abstract description 10
- 230000000694 effects Effects 0.000 claims description 2
- 230000001360 synchronised effect Effects 0.000 abstract description 4
- 229910000831 Steel Inorganic materials 0.000 abstract description 3
- 230000002159 abnormal effect Effects 0.000 abstract description 3
- 230000008602 contraction Effects 0.000 abstract description 3
- 239000010959 steel Substances 0.000 abstract description 3
- 230000002035 prolonged effect Effects 0.000 abstract description 2
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000011835 investigation Methods 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
Abstract
The application provides a constant temperature oil cylinder with a core tube structure, which comprises a core tube and an outer sleeve, wherein the outer sleeve is fixedly sleeved outside a cylinder barrel, a medium channel is arranged between the outer sleeve and the cylinder barrel, a medium outlet is arranged on the outer sleeve, one end of the cylinder barrel is provided with a cylinder bottom, the core tube is fixedly connected with the cylinder bottom, one end of a piston rod close to the cylinder bottom is fixedly provided with a sliding sealing sleeve, the sliding sealing sleeve is in sliding sleeve joint with the core tube, a sleeve is arranged in the piston rod, the sleeve is movably sleeved with the core tube, one end of the piston rod far away from the cylinder bottom is provided with a medium inlet, the sleeve is communicated with the medium inlet, and a connecting passage is arranged on the cylinder bottom. According to the application, synchronous constant temperature of the cylinder barrel and the piston rod can be realized, stable working temperature is provided for the oil cylinder according to working condition requirements, so that the oil cylinder can meet the use requirement of a large-span temperature environment, the problem of shaking abnormal sound of the oil cylinder caused by thermal expansion and cold contraction can be solved, and the service life of the hydraulic cylinder is prolonged; the working temperature range of the oil cylinder is enlarged, the temperature performance requirements on steel and sealing elements are reduced, and the cost of the oil cylinder is further reduced.
Description
Technical Field
The application relates to the technical field of hydraulic cylinders, in particular to a constant-temperature oil cylinder with a core tube structure.
Background
The hydraulic cylinder has wide application in various fields, and has very large working temperature span in some special occasions and working conditions of extreme high temperature or low temperature, such as a hydraulic cylinder for polar scientific investigation equipment. Conventional hydraulic cylinders are limited by the performance of the seals and generally can only meet the high or low temperature requirements alone, but cannot meet the extremely high and low temperature operating requirements at the same time, and therefore, more reliable thermostatic cylinders are required to meet the specific requirements.
Disclosure of Invention
The application aims to solve the problems in the prior art, and provides a constant-temperature oil cylinder with a core tube structure, which can realize synchronous constant temperature of a cylinder barrel and a piston rod, provide stable working temperature for the oil cylinder according to working condition requirements, and enable the oil cylinder to meet the use requirement of a large-span temperature environment.
The application aims to achieve the aim, and the aim is achieved by the following technical scheme:
the utility model provides a constant temperature hydro-cylinder of core tube structure, includes cylinder and piston rod, still includes core tube and outer sleeve, the fixed cover of outer sleeve is established the cylinder is outside, and both ends respectively with cylinder sealing connection, the outer sleeve with be equipped with the medium passageway between the cylinder, be equipped with on the outer sleeve with the medium export of medium passageway intercommunication, cylinder one end is equipped with the cylinder bottom, the core tube with cylinder bottom fixed connection, and runs through the cylinder bottom and extend to in the piston rod, the piston rod is close to the one end of cylinder bottom is fixed with the slip seal cover, the slip seal cover with the core tube slides and cup joints, be equipped with the sleeve pipe in the piston rod, the sheathed tube both ends respectively with piston rod fixed connection, the sleeve pipe with the core tube activity cup joints, the piston rod is kept away from the one end of cylinder bottom is equipped with the medium entry, the sleeve pipe with the medium entry intercommunication, be equipped with the connecting channel on the cylinder bottom, the connecting channel respectively with medium passageway and core tube intercommunication.
Preferably, a first oil way and a second oil way are arranged in the piston rod, a first oil port and a second oil port are arranged at one end, far away from the cylinder bottom, of the piston rod, the first oil way is connected with the first oil port, and the second oil way is connected with the second oil port.
Compared with the prior art, the application has the beneficial effects that:
the constant-temperature oil cylinder with the core pipe structure can realize synchronous constant temperature of the cylinder barrel and the piston rod, provide stable working temperature for the oil cylinder according to working condition requirements, enable the oil cylinder to meet the use requirement of a large-span temperature environment, improve the problem of shaking abnormal sound of the oil cylinder caused by thermal expansion and cold contraction, and prolong the service life of the hydraulic cylinder; the working temperature range of the oil cylinder is enlarged, the temperature performance requirements on steel and sealing elements are reduced, and the cost of the oil cylinder is further reduced.
Drawings
Fig. 1 is a schematic structural view of the present application.
Description of the reference numerals
The cylinder comprises a 1-cylinder barrel, a 2-piston rod, a 3-core tube, a 4-outer sleeve, a 5-medium channel, a 6-cylinder bottom, a 7-sliding sealing sleeve, an 8-sleeve, a 9-medium inlet, a 10-connecting passage, a 11-medium outlet, a 12-first oil way, a 13-second oil way, a 14-first oil port and a 15-second oil port.
Detailed Description
The application will be further illustrated with reference to specific examples. It is to be understood that these examples are illustrative of the present application and are not intended to limit the scope of the present application. Further, it will be understood that various changes and modifications may be made by those skilled in the art after reading the teachings of the application, and equivalents thereof fall within the scope of the application as defined by the claims.
As shown in fig. 1, a constant temperature cylinder with a core tube structure comprises a cylinder 1, a piston rod 2, a core tube 3 and an outer sleeve 4, wherein the outer sleeve 4 is fixedly sleeved outside the cylinder 1, two ends of the outer sleeve are respectively and hermetically connected with the cylinder 1, a medium channel 5 is arranged between the outer sleeve 4 and the cylinder 1, a medium outlet 11 communicated with the medium channel 5 is arranged on the outer sleeve 4, a cylinder bottom 6 is arranged at one end of the cylinder 1, the core tube 3 is fixedly connected with the cylinder bottom 6, the core tube penetrates through the cylinder bottom 6 and extends into the piston rod 2, a sliding sealing sleeve 7 is fixedly sleeved on one end, close to the cylinder bottom 6, of the piston rod 2, the sliding sealing sleeve 7 is in sliding sleeve connection with the core tube 3, a sleeve 8 is arranged in the piston rod 2, two ends of the sleeve 8 are respectively and fixedly connected with the cylinder rod 2, the sleeve 8 is movably sleeved on one end, far away from the cylinder bottom 6, a medium inlet 9 is arranged at the end, the sleeve 8 is communicated with the medium inlet 9, a connecting passage 10 is arranged on the cylinder bottom 6, and the connecting passage 10 is respectively communicated with the medium channel 5 and the core tube 3.
In this embodiment, a first oil path 12 and a second oil path 13 are disposed in the piston rod 2, a first oil port 14 and a second oil port 15 are disposed at one end of the piston rod 2 away from the cylinder bottom 6, the first oil path 12 is connected with the first oil port 14, and the second oil path 13 is connected with the second oil port 15. The form of the oil passage is not limited to this.
The working principle of the constant temperature oil cylinder with the core pipe structure in the embodiment is as follows: the constant temperature medium enters the piston rod 2 through the medium inlet 9, sequentially enters the medium channel 5 between the cylinder 1 and the outer sleeve 4 through the sleeve 8, the core tube 3 and the connecting pipeline, and penetrates through the whole medium loop through the medium outlet 11, so that synchronous constant temperature of the cylinder 1 and the piston rod 2 is realized, stable working temperature is provided for the oil cylinder according to working condition requirements, the oil cylinder can meet the use requirement of a large-span temperature environment, the problem of shaking abnormal sound of the oil cylinder caused by expansion with heat and contraction with cold can be solved, and the service life of the hydraulic cylinder is prolonged; the working temperature range of the oil cylinder is enlarged, the temperature performance requirements on steel and sealing elements are reduced, and the cost of the oil cylinder is further reduced. In addition, the structure has no limit on the axial dimension of the oil cylinder, and the long-stroke and large-dimension oil cylinder can be used.
Claims (2)
1. The utility model provides a constant temperature hydro-cylinder of core tube structure, includes cylinder and piston rod, its characterized in that still includes core tube and outer sleeve, the fixed cover of outer sleeve is established outside the cylinder, and both ends respectively with cylinder sealing connection, the outer sleeve with be equipped with the medium passageway between the cylinder, be equipped with on the outer sleeve with the medium export of medium passageway intercommunication, cylinder one end is equipped with the cylinder bottom, the core tube with cylinder bottom fixed connection, and runs through the cylinder bottom and extend to in the piston rod, the piston rod is close to the one end of cylinder bottom is fixed with the slip seal cover, the slip seal cover with the core tube slides and cup joints, be equipped with the sleeve pipe in the piston rod, the sleeve pipe both ends respectively with piston rod fixed connection, the sleeve pipe with the core tube activity cup joints, the piston rod keep away from the one end of cylinder bottom is equipped with the medium entry, the sleeve pipe with the medium entry intercommunication, be equipped with the connecting passage on the cylinder bottom, the connecting passage communicates with medium passageway and core tube respectively.
2. The thermostatic cylinder of a core tube structure of claim 1, wherein: the cylinder is characterized in that a first oil way and a second oil way are arranged in the piston rod, a first oil port and a second oil port are arranged at one end, far away from the cylinder bottom, of the piston rod, the first oil way is connected with the first oil port, and the second oil way is connected with the second oil port.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202311172727.3A CN117212284A (en) | 2023-09-12 | 2023-09-12 | Constant temperature oil cylinder with core pipe structure |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202311172727.3A CN117212284A (en) | 2023-09-12 | 2023-09-12 | Constant temperature oil cylinder with core pipe structure |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN117212284A true CN117212284A (en) | 2023-12-12 |
Family
ID=89034666
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202311172727.3A Pending CN117212284A (en) | 2023-09-12 | 2023-09-12 | Constant temperature oil cylinder with core pipe structure |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN117212284A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN117605733A (en) * | 2024-01-22 | 2024-02-27 | 张家口长城液压油缸有限公司 | Multistage telescopic erection hydraulic cylinder with core pipe structure |
-
2023
- 2023-09-12 CN CN202311172727.3A patent/CN117212284A/en active Pending
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN117605733A (en) * | 2024-01-22 | 2024-02-27 | 张家口长城液压油缸有限公司 | Multistage telescopic erection hydraulic cylinder with core pipe structure |
| CN117605733B (en) * | 2024-01-22 | 2024-03-19 | 张家口长城液压油缸有限公司 | Multistage telescopic erection hydraulic cylinder with core pipe structure |
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