CN204524740U - Single-stage short bolt tensioning jack - Google Patents
Single-stage short bolt tensioning jack Download PDFInfo
- Publication number
- CN204524740U CN204524740U CN201420777934.1U CN201420777934U CN204524740U CN 204524740 U CN204524740 U CN 204524740U CN 201420777934 U CN201420777934 U CN 201420777934U CN 204524740 U CN204524740 U CN 204524740U
- Authority
- CN
- China
- Prior art keywords
- cylinder body
- support set
- pull bar
- cavity
- pulling
- 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
Links
- 238000004891 communication Methods 0.000 claims abstract description 4
- 239000000463 material Substances 0.000 abstract description 3
- 238000012423 maintenance Methods 0.000 abstract description 2
- 229910000851 Alloy steel Inorganic materials 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000007812 deficiency Effects 0.000 description 1
- 230000005489 elastic deformation Effects 0.000 description 1
- 230000005611 electricity Effects 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 239000004744 fabric Substances 0.000 description 1
- 239000012530 fluid Substances 0.000 description 1
- 238000005065 mining Methods 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 230000005619 thermoelectricity Effects 0.000 description 1
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 1
Landscapes
- Hand Tools For Fitting Together And Separating, Or Other Hand Tools (AREA)
Abstract
The utility model discloses a kind of single-stage short bolt tensioning jack, comprise support set, pulling sleeve is rotatablely equipped with in support set, pulling sleeve is provided with corresponding pulling hole, the side of support set is provided with breach use driving lever and inserts in the pulling hole on pulling sleeve, the upper end of support set is installed with the cylinder body of annular and is provided with cavity, cylinder body central authorities are inserted with pull bar, pull bar central authorities are provided with bores a hole and is provided with screw thread, pull bar global sections is T-shaped and is installed with piston and coordinates to be installed in the cavity of cylinder body, the outer wall of cylinder body is provided with snap joint and by its built-in pipeline communication in cavity.The utility model pull bar is installed separately, is equipped with different pull bars and pulling sleeve, for the tools for bolts ' pretension of different size, can realize the tools for bolts ' pretension of many specifications; Piston pattern saves material, less expense; Simple to operate, easy to maintenance; Operating pressure is high, small volume, and applying working condition scope is wide.
Description
Technical field:
The utility model relates to stretcher field, particularly a kind of single-stage short bolt tensioning jack.
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 single-stage short bolt tensioning jack that a kind of structural design is more reasonable, ingenious, easy to use.
The technical solution adopted in the utility model is:
Single-stage short bolt tensioning jack, comprise support set, it is characterized in that: in described support set, be rotatablely equipped with pulling sleeve, pulling sleeve is provided with corresponding pulling hole, the side of support set is provided with breach use driving lever and inserts in the pulling hole on pulling sleeve, the upper end of support set is installed with the cylinder body of annular and is provided with cavity, cylinder body central authorities are inserted with pull bar, pull bar central authorities are provided with bores a hole and is provided with screw thread, described pull bar global sections is T-shaped and is installed with piston and coordinates to be installed in the cavity of cylinder body, the outer wall of cylinder body is provided with snap joint and by its built-in pipeline communication in cavity.
Described single-stage short bolt tensioning jack, is characterized in that: described piston is slidably fitted with in the cavity in cylinder body, and the two sides of piston are provided with annular seal groove.
Compared with prior art, the beneficial effects of the utility model are:
The utility model pull bar is installed separately, same stretcher can be equipped with different pull bars and pulling sleeve, for the tools for bolts ' pretension of 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 pulling sleeve of a stretcher and dimension, just can realize the tools for bolts ' pretension of many specifications; Piston pattern saves material, less expense; Simple to operate, easy to maintenance; 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:
Single-stage short bolt tensioning jack, comprise support set 5, pulling sleeve 6 is rotatablely equipped with in support set 5, pulling sleeve 6 is provided with corresponding pulling hole, the side of support set 5 is provided with breach and uses driving lever 7 to insert in the pulling hole on pulling sleeve 6, the upper end of support set 5 is installed with the cylinder body 3 of annular and is provided with cavity, cylinder body 3 central authorities are inserted with pull bar 1, pull bar 1 central authorities are provided with bores a hole and is provided with screw thread, pull bar 1 global sections is T-shaped and is installed with piston 2 and coordinates to be installed in the cavity of cylinder body 3, the outer wall of cylinder body 3 is provided with snap joint 4 and by its built-in pipeline communication in cavity, piston 2 is slidably fitted with in the cavity in cylinder body, the two sides of piston are provided 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. single-stage short bolt tensioning jack, comprise support set, it is characterized in that: in described support set, be rotatablely equipped with pulling sleeve, pulling sleeve is provided with corresponding pulling hole, the side of support set is provided with breach use driving lever and inserts in the pulling hole on pulling sleeve, the upper end of support set is installed with the cylinder body of annular and is provided with cavity, cylinder body central authorities are inserted with pull bar, pull bar central authorities are provided with bores a hole and is provided with screw thread, described pull bar global sections is T-shaped and is installed with piston and coordinates to be installed in the cavity of cylinder body, the outer wall of cylinder body is provided with snap joint and by its built-in pipeline communication in cavity.
2. single-stage short bolt tensioning jack according to claim 1, is characterized in that: described piston is slidably fitted with in the cavity in cylinder body, and the two sides of piston are provided with annular seal groove.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420777934.1U CN204524740U (en) | 2014-12-10 | 2014-12-10 | Single-stage short bolt tensioning jack |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420777934.1U CN204524740U (en) | 2014-12-10 | 2014-12-10 | Single-stage short bolt tensioning jack |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN204524740U true CN204524740U (en) | 2015-08-05 |
Family
ID=53738792
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201420777934.1U Expired - Fee Related CN204524740U (en) | 2014-12-10 | 2014-12-10 | Single-stage short bolt tensioning jack |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN204524740U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104551633A (en) * | 2014-12-10 | 2015-04-29 | 马鞍山市益华液压机具有限公司 | Single-stage short-type bolt tensioner |
| CN109605284A (en) * | 2019-01-31 | 2019-04-12 | 中国工程物理研究院机械制造工艺研究所 | A kind of tools for bolts ' pretension stretching device and method |
-
2014
- 2014-12-10 CN CN201420777934.1U patent/CN204524740U/en not_active Expired - Fee Related
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104551633A (en) * | 2014-12-10 | 2015-04-29 | 马鞍山市益华液压机具有限公司 | Single-stage short-type bolt tensioner |
| CN109605284A (en) * | 2019-01-31 | 2019-04-12 | 中国工程物理研究院机械制造工艺研究所 | A kind of tools for bolts ' pretension stretching device and method |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN104314912A (en) | Gas-liquid pressure cylinder | |
| CN204524740U (en) | Single-stage short bolt tensioning jack | |
| CN204525352U (en) | The slim bolt tensioning jack of single-stage | |
| CN203078630U (en) | Excavator track tensioning cylinder | |
| CN104564983A (en) | Bottom ring hydraulic nut | |
| CN104552149A (en) | Single-stage thin-type bolt tensioner | |
| CN204366393U (en) | Single-stage high type bolt tensioning jack | |
| CN104551634A (en) | Two-stage high-type bolt stretcher | |
| CN204381802U (en) | Twin-stage high type bolt tensioning jack | |
| CN104564982A (en) | Top ring hydraulic nut | |
| CN203052021U (en) | High-pressure quick union | |
| CN202789368U (en) | Pneumatic three-fluid grouting pump | |
| CN202922180U (en) | Hydraulic tensioner structure for deepwater bolt | |
| CN204371889U (en) | Hn type hydraulic nut | |
| CN103836051A (en) | Hydraulic nut used on base of universal rolling mill | |
| CN104551633A (en) | Single-stage short-type bolt tensioner | |
| CN205465961U (en) | Device is demolishd to mechanically fastening round pin | |
| CN204371888U (en) | Base ring hydraulic nut | |
| CN104551632A (en) | Single-stage high-type bolt tensioner | |
| CN204434185U (en) | Wind power brake piston return device | |
| CN205342396U (en) | Wind -powered electricity generation elongator | |
| CN203510118U (en) | Tension stretcher | |
| CN203702807U (en) | Double-end stud | |
| CN205423400U (en) | Cylinder end pressure testing specialized tool | |
| CN203321934U (en) | Hydraulic cylinder with guide sleeve arranged outside |
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 |