CN206509717U - A kind of general stretcher - Google Patents
A kind of general stretcher Download PDFInfo
- Publication number
- CN206509717U CN206509717U CN201621459371.7U CN201621459371U CN206509717U CN 206509717 U CN206509717 U CN 206509717U CN 201621459371 U CN201621459371 U CN 201621459371U CN 206509717 U CN206509717 U CN 206509717U
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- CN
- China
- Prior art keywords
- piston
- pallet
- stretcher
- stud
- handling
- 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.)
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- Pistons, Piston Rings, And Cylinders (AREA)
Abstract
A kind of general stretcher, it includes stretcher base, piston, pallet and oil connection；The stretcher base is provided with annular oil groove, the piston is embedded in the annular oil groove and forms oil pocket between the stretcher base, the oil connection is connected on the stretcher base and connected with the oil pocket, the pallet is connected to the top of the piston, and the pallet rises to applying tensile force by handling stud with the piston.The utility model has the advantages that simple in construction, easy to operate, safe and reliable, cope with scene environment complicated and changeable, simultaneously by change the pallet of different size be adapted to it is various sizes of by handling stud, suitable for the handling of the large-sized bolt and nut of big pretightning force, the efficiency of big machinery equipment maintenance is improved.
Description
Technical field
The utility model is related to a kind of mechanical extracting tool, and in particular to for the logical of the large-scale stud of removal during a kind of maintenance
With stretcher, belong to machinery manufacturing technology field.
Background technology
In Large-Scale Equipment manufacturing industry, tearing open for the screw bolt and nut that high intensity, large scale, big pretightning force are required is frequently encountered
Problem is unloaded, such as in shipbuilding and maintenance process, often has main frame main-bearing stud, cylinder head bolts or connecting rod stud etc. to need peace
Dress, the situation of dismounting, are more had a clear superiority using hydraulic elongator than instruments such as torque spanneres in this case, and it manipulates letter
Single, control is accurate, can be easily accomplished dismounting work.
As stretcher application is more and more extensive, its description, structure type are also being continuously increased, while the work of operation
Condition also become increasingly complex it is changeable, such as extra small space, high pressure requirement.But general hydraulic elongator is complicated, operate numerous
It is multiple, using cannot meet the needs of in the case of emergent or special.
Utility model content
The purpose of this utility model is that overcoming the shortcomings of existing professional stretcher, there is provided a kind of simple in construction, operation side
Just general stretcher, when Large-Scale Equipment is maintained, can easily dismantle the large-sized bolt and spiral shell of big pretightning force
Mother, so as to ensure the maintenance and maintenance work of main frame.
To achieve the above object, technical solution of the present utility model is as follows：
A kind of general stretcher, it includes stretcher base, piston, pallet and oil connection；The stretcher base is set
There is annular oil groove, the piston is embedded in the annular oil groove and oil pocket, the oil pipe are formed between the stretcher base
Joint is connected on the stretcher base and connected with the oil pocket, and the pallet is connected to the top of the piston, and should
Pallet rises to applying tensile force by handling stud with the piston.
Further, described pallet is provided with to be used to place by the centre bore of handling stud and lift this for top and loaded and unloaded
The loading end of stud.
Further, the diameter of the centre bore of described pallet is determined according to the size by handling stud.
Further, the periphery of described pallet is provided with external screw thread, and the piston is provided with the screw thread matched with the external screw thread
Hole, the piston is connected by the screwed hole and external screw thread with the pallet.
Technique effect of the present utility model is as follows：
The utility model have the advantages that it is simple in construction, easy to operate, safe and reliable, cope with scene it is complicated and changeable
Environment, at the same by change the pallet of different size be adapted to it is various sizes of by handling stud, it is adaptable to big pretightning force
The handling of large-sized bolt and nut, improve the efficiency of big machinery equipment maintenance.
Brief description of the drawings
Fig. 1 is structural representation of the present utility model.
Fig. 2 is Fig. 1 top view.
Fig. 3 is the structural representation of pallet.
Fig. 4 is the structural representation of piston.
Fig. 5 is Fig. 4 top view.
In figure：
1 pallet, 2 pistons, 3 stretcher bases, 4 oil connections, 11 centre bores, 12 external screw threads, 13 loading ends, 21 screw threads
Hole, 22 endoporus, 23 peripheries.
Embodiment
General stretcher described in the utility model is further elaborated with reference to the accompanying drawings and examples, but can not
Protection domain of the present utility model is limited with this.
Please refer to Fig. 1 and Fig. 2, it is illustrated that general stretcher connects including stretcher base 3, piston 2, pallet 1 and oil pipe
First 4.
The stretcher base 3 is provided with annular oil groove.
Fig. 4 and Fig. 5 are please referred to, the piston 2 is annular component, is embedded at the annular oil groove of the stretcher base 3
In；The center of the piston 2 is provided with coaxial and connected screwed hole 21 and endoporus 22, and periphery is provided with periphery 23, the He of endoporus 22
Periphery 23 coordinates with the interior outer well surface formation gap of the annular oil groove of the stretcher base 3 respectively, enables the piston 2
The raising and lowering in the annular oil groove of the stretcher base 3；Described between the piston 2 and the stretcher base 3
Oil pocket A is formed in annular oil groove, Fig. 1 is seen.
Referring to Fig. 2, the oil connection 4 is connected on the stretcher base 3, and connected with the oil pocket A.
The pallet 1 is connected to the top of the piston 2, referring to Fig. 3, the periphery of described pallet 1 is provided with external screw thread
12, match with the screwed hole 21 of the piston 2, the pallet 1 is spun by the external screw thread 21 and screwed hole 21, realize with it is described
Piston 2 is connected.The center of the pallet 1 is provided with centre bore 11, and for placing by handling stud, top is provided with loading end 13, uses
Yu Dingju this by handling stud.The pallet 1 can be changed, and the diameter of its centre bore 11 is according to scene by handling stud external diameter
Size is determined.
During work, the general stretcher increases pressure using oil pocket A, and the pallet 1 rises with the piston 2, directly
To applying tensile force by handling stud, stud is elongated in its elastic deformation area, occurred by the diameter of handling stud micro
Deformation, so as to be unscrewed or tightened to nut.
Preferred embodiment of the present utility model is above are only, not for limiting protection domain of the present utility model,
All equivalence changes made according to context of the present utility model and improvement, are regarded as the utility model model claimed
Farmland.
Claims (4)
1. a kind of general stretcher, it is characterised in that：Described general stretcher includes stretcher base, piston, pallet and oil
Pipe joint；The stretcher base be provided with annular oil groove, the piston be embedded in the annular oil groove and with the stretcher bottom
Oil pocket is formed between seat, the oil connection is connected on the stretcher base and connected with the oil pocket, the pallet connection
In the top of the piston, and the pallet rises to applying tensile force by handling stud with the piston.
2. general stretcher according to claim 1, it is characterised in that：Described pallet, which is provided with, to be used to place to be loaded and unloaded
The centre bore of stud and for push up lift this by the loading end of handling stud.
3. general stretcher according to claim 2, it is characterised in that：The diameter of the centre bore of described pallet is according to institute
State by the size determination of handling stud.
4. general stretcher according to claim 1, it is characterised in that：The periphery of described pallet is provided with external screw thread, institute
State piston and be provided with the screwed hole matched with the external screw thread, the piston is connected by the screwed hole and external screw thread with the pallet.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201621459371.7U CN206509717U (en) | 2016-12-29 | 2016-12-29 | A kind of general stretcher |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201621459371.7U CN206509717U (en) | 2016-12-29 | 2016-12-29 | A kind of general stretcher |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN206509717U true CN206509717U (en) | 2017-09-22 |
Family
ID=59862429
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201621459371.7U Active CN206509717U (en) | 2016-12-29 | 2016-12-29 | A kind of general stretcher |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN206509717U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| 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 |
| CN110950274A (en) * | 2019-12-17 | 2020-04-03 | 中国空气动力研究与发展中心低速空气动力研究所 | Lead screw back taper connection structure |
-
2016
- 2016-12-29 CN CN201621459371.7U patent/CN206509717U/en active Active
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| 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 |
| CN110950274A (en) * | 2019-12-17 | 2020-04-03 | 中国空气动力研究与发展中心低速空气动力研究所 | Lead screw back taper connection structure |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| TR01 | Transfer of patent right |
Effective date of registration: 20191017 Address after: 200439 room 3177, 3 / F, building 6, No. 1328, Yixian Road, Baoshan District, Shanghai Patentee after: China ship cruise Technology Development Co., Ltd. Address before: 200129 Pudong Road, Shanghai, No. 346, building 2851, No. Patentee before: Hudong Heavy Mechine Co., Ltd. |
|
| TR01 | Transfer of patent right |