CN205136246U - Expanding prestressing force provides device in combination - Google Patents
Expanding prestressing force provides device in combination Download PDFInfo
- Publication number
- CN205136246U CN205136246U CN201520841608.7U CN201520841608U CN205136246U CN 205136246 U CN205136246 U CN 205136246U CN 201520841608 U CN201520841608 U CN 201520841608U CN 205136246 U CN205136246 U CN 205136246U
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- CN
- China
- Prior art keywords
- pretension
- container
- prestressing force
- compressor
- inner sleeve
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- Withdrawn - After Issue
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Abstract
The utility model relates to an expanding prestressing force provides device in combination, it includes preloading device and clamping device, pre -tightening piece's surface is being treated to even setting of three or three above preloading device, preloading device includes compressor, manometer and pretension container, the pretension container is thin wall elasticity container, the internal surface of pretension container is the pretension face, and its pretension face is with the surface phase -match of treating the corresponding pretension position of pre -tightening piece and for interference fit, and the compressor provides the compression medium in to the pretension container, the manometer sets up between compressor and pretension container, the clamping device is an one end open -ended rigidity cylindrical shell, the internal surface of rigidity cylindrical shell and the side surface phase -match of pretension container. The utility model discloses a different compressors are respectively to providing the compression medium in the pretension container cavity to treat each pretension surface of pre -tightening piece and carry out different stress restraints, only need the pressure through adjusting the compression machine, thereby can reach the size of adjusting the pretightning force.
Description
Technical field
The utility model relates to a kind of combination internal-expansion type prestressing force generator.
Background technique
Pretightening force is before being subject to work loads, in order to strengthen reliability and the tightness of connection, to prevent from being subject to occurring between load rear connectors gap or Relative sliding and the power added in advance.Current prestressing force is implemented to be all the fixing power of applying one or to be completely fixed in by product in a fixing frame, so just the size of pretightening force is made to be a steady state value, not only bad for the control of product prestressing force size, and each dismounting all likely causes damage to a certain degree to product, adds maintenance cost.
Model utility content
The purpose of this utility model is to provide that a kind of pretightening force is adjustable, pretension combines internal-expansion type prestressing force generator reliably.
To achieve these goals, the technical solution of the utility model is, a kind of combination internal-expansion type prestressing force generator, it comprises pre-tightening apparatus and clamping device, the pre-tightening apparatus of more than three or three is evenly arranged on the outer surface treating preload piece, described pre-tightening apparatus comprises compressor, pressure gauge and pretension container, described pretension container is thin-walled elastic container, the internal surface of described pretension container is pretension face, the outer surface of its pretension face pre-stressed position corresponding with treating preload piece matches and is interference fit, compressor provides compressed media in pretension container, described pressure gauge is arranged between compressor and pretension container, described clamping device is the rigid cylindrical housing of an one end open, and the internal surface of rigid cylindrical housing and the side surface of pretension container match.
Preferably, described clamping device comprises overcoat, inner sleeve and connecting tendon, described overcoat is the rigid cylindrical housing of one end open, described inner sleeve is the rigid cylindrical housing of at least one end opening, the internal surface of inner sleeve and the side surface of pretension container match, the external diameter of described inner sleeve is less than the internal diameter of overcoat, and overcoat and inner sleeve are linked together by the connecting tendon of more than three or three.
Preferably, described connecting tendon is " work " font.
Preferably, described connecting tendon is " dovetail " font.
Advantageous Effects of the present utility model is, use the internal-expansion type prestressing apparatus of more than three or three to treat preload piece and carry out outside pretension, compressed media is provided in pretension container cavity respectively by different compressors, make each cavity generation dilatancy in various degree of pretension container, thus treat each pretension outer surface of preload piece and carry out different stress constraints, completing the pretension treating preload piece, only by regulating the pressure of compressor, thus need can reach the size regulating pretightening force.
Accompanying drawing explanation
Fig. 1 is the utility model example structure schematic diagram;
Fig. 2 is pre-tightening apparatus structural representation;
Fig. 3 is the A-A sectional view of Fig. 1.
Embodiment
Below in conjunction with drawings and Examples, the utility model is described further.
With reference to accompanying drawing, a kind of combination internal-expansion type prestressing force generator, it comprises pre-tightening apparatus 2 and clamping device 3, three pre-tightening apparatus 2 are evenly arranged on the outer surface treating preload piece 1, described pre-tightening apparatus 2 comprises compressor 2-1, pressure gauge 2-2 and pretension container 2-3, described pretension container 2-3 is thin-walled elastic container, the internal surface of described pretension container 2-3 is pretension face, its pretension face and treat that the outer surface of the corresponding pre-stressed position of preload piece 1 matches and for interference fit, compressor 2-1 provides compressed media in pretension container 2-3, described pressure gauge 2-2 is arranged between compressor 2-1 and pretension container 2-3, described clamping device 3 is the rigid cylindrical housing of an one end open, the internal surface of clamping device 3 and the side surface of pretension container 2-3 match, described clamping device 3 comprises overcoat 3-1, inner sleeve 3-2 and connecting tendon 3-3, described overcoat 3-1 is the rigid cylindrical housing of one end open, described inner sleeve 3-2 is the rigid cylindrical housing of one end open, the internal surface of inner sleeve 3-2 and the side surface of pretension container 2-3 match, the external diameter of described inner sleeve 3-2 is less than the internal diameter of overcoat 3-1, overcoat 3-1 and inner sleeve 3-2 is linked together by 12 connecting tendon 3-3, described connecting tendon 3-3 is " work " font.
The explanation of above embodiment just understands method of the present utility model and core concept thereof for helping.Should be understood that; for those skilled in the art; under the prerequisite not departing from the utility model principle, can also carry out some improvement and modification to the utility model, these improve and modify and also fall in the protection domain of the utility model claim.
Claims (4)
1. a combination internal-expansion type prestressing force generator, it is characterized in that, it comprises pre-tightening apparatus and clamping device, the pre-tightening apparatus of more than three or three is evenly arranged on the outer surface treating preload piece, described pre-tightening apparatus comprises compressor, pressure gauge and pretension container, described pretension container is thin-walled elastic container, the internal surface of described pretension container is pretension face, the outer surface of its pretension face pre-stressed position corresponding with treating preload piece matches and is interference fit, compressor provides compressed media in pretension container, described pressure gauge is arranged between compressor and pretension container, described clamping device is the rigid cylindrical housing of an one end open, and the internal surface of rigid cylindrical housing and the side surface of pretension container match.
2. one combination internal-expansion type prestressing force generator according to claim 1, it is characterized in that, described clamping device comprises overcoat, inner sleeve and connecting tendon, described overcoat is the rigid cylindrical housing of one end open, described inner sleeve is the rigid cylindrical housing of at least one end opening, the internal surface of inner sleeve and the side surface of pretension container match, and the external diameter of described inner sleeve is less than the internal diameter of overcoat, and overcoat and inner sleeve are linked together by the connecting tendon of more than three or three.
3. one combination internal-expansion type prestressing force generator according to claim 2, it is characterized in that, described connecting tendon is " work " font.
4. one combination internal-expansion type prestressing force generator according to claim 2, it is characterized in that, described connecting tendon is " dovetail " font.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520841608.7U CN205136246U (en) | 2015-10-28 | 2015-10-28 | Expanding prestressing force provides device in combination |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520841608.7U CN205136246U (en) | 2015-10-28 | 2015-10-28 | Expanding prestressing force provides device in combination |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN205136246U true CN205136246U (en) | 2016-04-06 |
Family
ID=55622044
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201520841608.7U Withdrawn - After Issue CN205136246U (en) | 2015-10-28 | 2015-10-28 | Expanding prestressing force provides device in combination |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN205136246U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105240354A (en) * | 2015-10-28 | 2016-01-13 | 湘潭电机股份有限公司 | Combined inner expansion type prestress providing device |
-
2015
- 2015-10-28 CN CN201520841608.7U patent/CN205136246U/en not_active Withdrawn - After Issue
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105240354A (en) * | 2015-10-28 | 2016-01-13 | 湘潭电机股份有限公司 | Combined inner expansion type prestress providing device |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| AV01 | Patent right actively abandoned |
Granted publication date: 20160406 Effective date of abandoning: 20171212 |
|
| AV01 | Patent right actively abandoned |