CN204525352U - The slim bolt tensioning jack of single-stage - Google Patents
The slim bolt tensioning jack of single-stage Download PDFInfo
- Publication number
- CN204525352U CN204525352U CN201420777976.5U CN201420777976U CN204525352U CN 204525352 U CN204525352 U CN 204525352U CN 201420777976 U CN201420777976 U CN 201420777976U CN 204525352 U CN204525352 U CN 204525352U
- Authority
- CN
- China
- Prior art keywords
- pull bar
- piston
- cylinder body
- support set
- bar piston
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired - Fee Related
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- Hand Tools For Fitting Together And Separating, Or Other Hand Tools (AREA)
Abstract
The utility model discloses the slim bolt tensioning jack of a kind of single-stage, comprise support set, bottom support set, sidewall is provided with breach, inner bottom part installs pulling sleeve, the top of support set is installed with cylinder body, in the middle part of cylinder body, slipper seal is provided with pull bar piston, pull bar its centre is provided with bores a hole and is provided with screw thread, pull bar piston is provided with suspension ring, the step surface of cylinder body inside is provided with cannelure and forms hydraulic cavities with pull bar piston, the top of pull bar piston is provided with installing hole and is provided with snap joint, the pipeline communication of pull bar internal piston is passed through in hydraulic cavities in the bottom of installing hole.The utility model piston, integrated with pulling rod formula design, and save material, small volume; Piston adopts two hydraulic fluid port designs, can multiple stage series connection use; Simple to operate, easy to maintenance; Low price; Operating pressure is high, small volume, and applying working condition scope is wide.
Description
Technical field:
The utility model relates to stretcher field, particularly the slim bolt tensioning jack of a kind of single-stage.
Background technology:
Bolt hydraulic stretcher is called for short bolt tensioning jack, the hydraulic power source that it provides by fluid power booster (superpressure oil pump), tensile force is determined according to the tensile strength of material, yield factor and percentage elongation, utilize the expansion force that superpressure oil pump produces, the bolt of the power that is applied in is elongated in its elastic deformation area, diameter of bolt slight deformation, thus makes nut be easy to loosening, also can apply the device of axial force in addition as hydraulic pressure excessively full connection, carry out top pressure and install.The maximum advantage of stretcher can make and the dismounting fastening by definite value simultaneously of multiple bolt, and cloth power is even, be a safety, efficiently, efficiently instrument be fastening and the optimal path of the bolt of dismounting all size.Be applied to the fields such as petrochemical industry, nuclear power, wind-powered electricity generation, water power, thermoelectricity, boats and ships, railway, Aero-Space, mining, heavy-duty machinery.According to different operating mode application conditions and user's requirement, the design of special stretcher can be done.
Utility model content:
The purpose of this utility model solves the deficiencies in the prior art, provides the slim bolt tensioning jack of a kind of structural design single-stage more reasonable, ingenious, easy to use.
The technical solution adopted in the utility model is:
The slim bolt tensioning jack of single-stage, comprise support set, it is characterized in that: bottom described support set, sidewall is provided with breach, inner bottom part installs pulling sleeve, the top of support set is installed with cylinder body, in the middle part of cylinder body, slipper seal is provided with pull bar piston, pull bar its centre is provided with bores a hole and is provided with screw thread, pull bar piston is provided with suspension ring, the step surface of cylinder body inside is provided with cannelure and forms hydraulic cavities with pull bar piston, the top of pull bar piston is provided with installing hole and is provided with snap joint, the pipeline communication of pull bar internal piston is passed through in hydraulic cavities in the bottom of installing hole.
The slim bolt tensioning jack of described single-stage, is characterized in that: described pull bar piston is slidably mounted in cylinder body, and both contact surface sidewalls are equipped with annular seal groove.
Compared with prior art, the beneficial effects of the utility model are:
The utility model piston, integrated with pulling rod formula design, and save material, small volume; Piston adopts two hydraulic fluid port designs, can multiple stage series connection use; Simple to operate, easy to maintenance; Low price; Operating pressure is high, small volume, and applying working condition scope is wide; Adopt high strength alloy steel 42CrMo, improve security and the life-span of product; Can according to customer requirement amount body making etc.
Accompanying drawing illustrates:
Fig. 1 is the utility model structural representation.
Detailed description of the invention:
Below in conjunction with accompanying drawing, by embodiment, the utility model is described in further detail:
The slim bolt tensioning jack of single-stage, comprise support set 5, bottom support set 5, sidewall is provided with breach, inner bottom part installs pulling sleeve 6, the top of support set 5 is installed with cylinder body 4, in the middle part of cylinder body 4, slipper seal is provided with pull bar piston 3, pull bar piston 3 central authorities are provided with bores a hole and is provided with screw thread, pull bar piston 3 is provided with suspension ring 1, the step surface of cylinder body 4 inside is provided with cannelure and forms hydraulic cavities with pull bar piston 3, the top of pull bar piston 3 is provided with installing hole and is provided with snap joint 2, the pipeline communication of pull bar piston 3 inside is passed through in hydraulic cavities in the bottom of installing hole, pull bar piston 3 is slidably mounted in cylinder body 4, and both contact surface sidewalls are equipped with annular seal groove.
Above-described embodiment is only preferably embodiment of the present utility model, and in addition, the utility model can also have other implementations.It should be noted that, under the prerequisite not departing from the utility model design, any apparent improvement and modification all should fall within protection domain of the present utility model.
Claims (2)
1. the slim bolt tensioning jack of single-stage, comprise support set, it is characterized in that: bottom described support set, sidewall is provided with breach, inner bottom part installs pulling sleeve, the top of support set is installed with cylinder body, in the middle part of cylinder body, slipper seal is provided with pull bar piston, pull bar its centre is provided with bores a hole and is provided with screw thread, pull bar piston is provided with suspension ring, the step surface of cylinder body inside is provided with cannelure and forms hydraulic cavities with pull bar piston, the top of pull bar piston is provided with installing hole and is provided with snap joint, the pipeline communication of pull bar internal piston is passed through in hydraulic cavities in the bottom of installing hole.
2. the slim bolt tensioning jack of single-stage according to claim 1, is characterized in that: described pull bar piston is slidably mounted in cylinder body, and both contact surface sidewalls are equipped with annular seal groove.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420777976.5U CN204525352U (en) | 2014-12-10 | 2014-12-10 | The slim bolt tensioning jack of single-stage |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420777976.5U CN204525352U (en) | 2014-12-10 | 2014-12-10 | The slim bolt tensioning jack of single-stage |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN204525352U true CN204525352U (en) | 2015-08-05 |
Family
ID=53739402
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201420777976.5U Expired - Fee Related CN204525352U (en) | 2014-12-10 | 2014-12-10 | The slim bolt tensioning jack of single-stage |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN204525352U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104552149A (en) * | 2014-12-10 | 2015-04-29 | 马鞍山市益华液压机具有限公司 | Single-stage thin-type bolt tensioner |
| CN109551210A (en) * | 2018-11-13 | 2019-04-02 | 中国船舶重工集团公司第七研究所 | A kind of hydraulic elongator |
-
2014
- 2014-12-10 CN CN201420777976.5U patent/CN204525352U/en not_active Expired - Fee Related
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104552149A (en) * | 2014-12-10 | 2015-04-29 | 马鞍山市益华液压机具有限公司 | Single-stage thin-type bolt tensioner |
| CN109551210A (en) * | 2018-11-13 | 2019-04-02 | 中国船舶重工集团公司第七研究所 | A kind of hydraulic elongator |
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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: 20150805 Termination date: 20151210 |
|
| EXPY | Termination of patent right or utility model |