CN203509534U - Closed type single-stage bolt tensioner - Google Patents
Closed type single-stage bolt tensioner Download PDFInfo
- Publication number
- CN203509534U CN203509534U CN201320577872.5U CN201320577872U CN203509534U CN 203509534 U CN203509534 U CN 203509534U CN 201320577872 U CN201320577872 U CN 201320577872U CN 203509534 U CN203509534 U CN 203509534U
- Authority
- CN
- China
- Prior art keywords
- cylinder body
- hole
- fixed base
- type single
- closed type
- 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)
- Bridges Or Land Bridges (AREA)
Abstract
The utility model discloses a closed type single-stage bolt tensioner which comprises a fixed base. A nut sleeve is arranged in the fixed base in a matched mode, a gap is formed in the middle portion of one side of the fixed base, adjusting holes are formed in the circumferential position of the nut sleeve at the corresponding position of the gap, a cylinder body is arranged on the upper end face of the fixed base in a pressing mode, a piston is arranged in the cylinder body in a sealing mode, a through hole is formed in the middle portion of the piston, a tension head with a step guide hole in the middle portion is arranged in the through hole in a matched mode, internal threads screwed with a screw rod to be tensioned are arranged on the lower end portion of the step guide hole, adjusting holes are formed in the outer cylindrical face of the upper end portion of the tension head, a cylinder cover is arranged at the top end of the cylinder body in a matched mode, the upper end portion of the piston penetrates through the middle portion of the cylinder cover, and an adjusting rod matched with the adjusting holes is further included. The closed type single-stage bolt tensioner is small in size and light, an oil cylinder body, the fixed base, an adjusting sleeve and a pull rod are connected into a whole, and the tensioner is convenient to carry and use. When a disc spring resets, the disc spring does not need to be pressed back manually, the labor efficiency of the operation personnel is improved, and meanwhile the tensioner can be used for tensioning bolts of different specifications in advance.
Description
Technical field
The utility model relates to a kind of stretcher, relates in particular to a kind of closed type single-stage bolt tensioning jack.
Background technology
Existing bolt tensioning jack is simple in structure, when range marks by red marking line, uses in running, need artificial observation constantly, also need manually to be pushed back simultaneously, in process hand labor intensity large, waste time and energy, inefficiency, can not meet instructions for use.
Utility model content
The purpose of this utility model is in order to make up the deficiency of prior art, and a kind of closed type single-stage bolt tensioning jack is provided.
The utility model is achieved through the following technical solutions:
A kind of closed type single-stage bolt tensioning jack, include holder, it is characterized in that: in described holder, coordinate regulating sleeve is installed, one middle side part of described holder is provided with breach, on the regulating sleeve circumferential position of described breach correspondence position, be distributed with adjustment hole, on described holder, be pressed with cylinder body, in described cylinder body, be sealed with piston, described piston middle part is provided with step through-hole, in described step through-hole, coordinate and middle part is installed with the pull bar of annular boss, in described pull bar bottom, be provided with and the internal thread hole for the treatment of that tensile bolt screws, between the upper end of described pull bar and cylinder body, coordinate the cylinder cover that hollow is installed, cavity in described cylinder cover is placed with dish spring, described cylinder cover is provided with handle, also include the adjusting rod coordinating with adjustment hole.
The cooperation place of described cylinder body inner carrier and the step surface of cylinder body is provided with oil inlet passage, and described oil inlet passage place is provided with snap joint.
The utility model has the advantages that:
The utility model volume is little, lightweight, and cylinder body, holder, regulating sleeve and pull bar combine as a whole, easy to carry and use; Same stretcher can be equipped with different pull bars and regulating sleeve, tools for bolts ' pretension for different size, operating personnel are having the tools for bolts ' pretension of plurality of specifications on-the-spot, only need carry pull bar and the regulating sleeve of a stretcher and dimension, just can realize the tools for bolts ' pretension of many specifications; Dish spring resets, and without manpower, is pushed back, and improves operating personnel's efficiency.
Accompanying drawing explanation
Fig. 1 is the utility model structural representation.
The specific embodiment
Referring to accompanying drawing, a kind of closed type single-stage bolt tensioning jack, include holder 1, in holder 1, coordinate regulating sleeve 2 is installed, one middle side part of holder 1 is provided with breach 3, on the regulating sleeve circumferential position of breach 3 correspondence positions, be distributed with adjustment hole 4, on holder 1, be pressed with cylinder body 5, in cylinder body 5, be sealed with piston 6, piston 6 middle parts are provided with step through-hole, in step through-hole, coordinate and middle part is installed with the pull bar 7 of annular boss, in pull bar 7 bottoms, be provided with and the internal thread hole for the treatment of that tensile bolt screws, between the upper end of pull bar 7 and cylinder body, coordinate the cylinder cover 8 that hollow is installed, cavity in cylinder cover 8 is placed with dish spring 9, cylinder cover 8 is provided with handle 10, also include the adjusting rod 11 coordinating with adjustment hole.The cooperation place of described cylinder body 5 inner carriers and the step surface of cylinder body is provided with oil inlet passage, and oil inlet passage place is provided with snap joint 12.
Claims (2)
1. a closed type single-stage bolt tensioning jack, include holder, it is characterized in that: in described holder, coordinate regulating sleeve is installed, one middle side part of described holder is provided with breach, on the regulating sleeve circumferential position of described breach correspondence position, be distributed with adjustment hole, on described holder, be pressed with cylinder body, in described cylinder body, be sealed with piston, described piston middle part is provided with step through-hole, in described step through-hole, coordinate and middle part is installed with the pull bar of annular boss, in described pull bar bottom, be provided with and the internal thread hole for the treatment of that tensile bolt screws, between the upper end of described pull bar and cylinder body, coordinate the cylinder cover that hollow is installed, cavity in described cylinder cover is placed with dish spring, described cylinder cover is provided with handle, also include the adjusting rod coordinating with adjustment hole.
2. closed type single-stage bolt tensioning jack according to claim 1, is characterized in that: the cooperation place of described cylinder body inner carrier and the step surface of cylinder body is provided with oil inlet passage, and described oil inlet passage place is provided with snap joint.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201320577872.5U CN203509534U (en) | 2013-09-17 | 2013-09-17 | Closed type single-stage bolt tensioner |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201320577872.5U CN203509534U (en) | 2013-09-17 | 2013-09-17 | Closed type single-stage bolt tensioner |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN203509534U true CN203509534U (en) | 2014-04-02 |
Family
ID=50368516
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201320577872.5U Expired - Fee Related CN203509534U (en) | 2013-09-17 | 2013-09-17 | Closed type single-stage bolt tensioner |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN203509534U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105422766A (en) * | 2015-12-09 | 2016-03-23 | 北京金风科创风电设备有限公司 | Toothed belt tensioning device and fan variable pitch device |
-
2013
- 2013-09-17 CN CN201320577872.5U patent/CN203509534U/en not_active Expired - Fee Related
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105422766A (en) * | 2015-12-09 | 2016-03-23 | 北京金风科创风电设备有限公司 | Toothed belt tensioning device and fan variable pitch device |
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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: 20140402 Termination date: 20150917 |
|
| EXPY | Termination of patent right or utility model |