CN204321059U - A kind of pre-tightening apparatus of large-sized forging forming hydraulic press group frame fuselage - Google Patents
A kind of pre-tightening apparatus of large-sized forging forming hydraulic press group frame fuselage Download PDFInfo
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- CN204321059U CN204321059U CN201420696731.XU CN201420696731U CN204321059U CN 204321059 U CN204321059 U CN 204321059U CN 201420696731 U CN201420696731 U CN 201420696731U CN 204321059 U CN204321059 U CN 204321059U
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- pull bar
- hydraulic press
- pressure
- group frame
- locknut
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Abstract
The utility model relates to a kind of pre-tightening apparatus of large-sized forging forming hydraulic press group frame fuselage, comprise pull bar and locknut, described pull bar is from top to bottom successively through the Pressure-bearing pads of the Pressure-bearing pads on top, entablature, column, sill and bottom, described Pressure-bearing pads is installed on the installed surface of fuselage by hold-down screw, and described locknut is screwed into the two ends up and down of pull bar respectively.The utility model structure is simple, processing and manufacturing difficulty is little, cost is low, practical, four pull bars due to group frame bear the nominal pressure of hydraulic press about 1/4th respectively, and the lifting surface area of pull bar locknut installed surface very little and rigidity is poor, therefore, it is possible to effectively increase the lifting surface area of installed surface, thus reduce stress raisers.
Description
Technical field
The utility model belongs to hydraulic press technical field, particularly a kind of pre-tightening apparatus of large-sized forging forming hydraulic press group frame fuselage.
Background technology
At present, the airframe structure of hydraulic press is probably divided into three kinds: 1. general frame fuselage; 2. three beam four post fuselages; 3. group frame fuselage.And group frame fuselage generally all needs fuselage pretension, fuselage pre-tightening apparatus more common is at present: pull bar two ends are respectively equipped with the pre-tightening apparatus of a locknut.Its advantage is that structure is simple, and pretension is convenient and reliable.But when relating to the hydraulic press of some super-tonnages, due to manufacturing cost and the restriction of processing difficulty, cause the intensity of the equipment local installed surface contacted with Draw bar lock parent phase after equipment tonnage rises to certain phase, produce comparatively serious stress concentration phenomenon, the extrusion stress of pull bar locknut cannot be born.
Summary of the invention
The utility model provides a kind of pre-tightening apparatus reducing the large-sized forging forming hydraulic press group frame fuselage of local stress for solving in known technology the technical problem that exists.
The technical scheme that the utility model is taked for the technical problem existed in solution known technology is: a kind of pre-tightening apparatus of large-sized forging forming hydraulic press group frame fuselage, comprise pull bar and locknut, described pull bar is from top to bottom successively through the Pressure-bearing pads of the Pressure-bearing pads on top, entablature, column, sill and bottom, described Pressure-bearing pads is installed on the installed surface of fuselage by hold-down screw, and described locknut is screwed into the two ends up and down of pull bar respectively.
The advantage that the utility model has and good effect are: the utility model structure is simple, processing and manufacturing difficulty is little, cost is low, practical, four pull bars due to group frame bear the nominal pressure of hydraulic press about 1/4th respectively, and the lifting surface area of pull bar locknut installed surface very little and rigidity is poor, therefore, it is possible to effectively increase the lifting surface area of installed surface, thus reduce stress raisers.
Accompanying drawing explanation
Fig. 1 is the utility model schematic diagram.
In Fig. 1,1. pull bar, 2. locknut, 3. Pressure-bearing pads, 4. hold-down screw, 5. entablature, 6. pillar, 7. sill.
Detailed description of the invention:
For summary of the invention of the present utility model, Characteristic can be understood further, hereby exemplify following examples, and coordinate accompanying drawing to be described in detail as follows:
Refer to Fig. 1, a kind of pre-tightening apparatus of large-sized forging forming hydraulic press group frame fuselage, comprise pull bar 1 and locknut 2, pull bar 1 is from top to bottom successively through the Pressure-bearing pads 3 of the Pressure-bearing pads 3 on top, entablature 5, column 6, sill 7 and bottom, Pressure-bearing pads 3 is installed on the installed surface of fuselage by hold-down screw 4, and locknut 2 is screwed into the two ends up and down of pull bar 1 respectively.
When the utility model uses, by heating, pull bar 1 is extended, after tightening locknut 2, complete pretension.
Above embodiment is only in order to illustrate that the technical solution of the utility model is not intended to limit, and those of ordinary skill in the field should be appreciated that and still can modify to the detailed description of the invention of utility model or carry out equivalent replacement to portion of techniques feature; And not departing from the spirit of technical solutions of the utility model, it all should be encompassed in the technology of the utility model request protection.
Claims (1)
1. the pre-tightening apparatus of a large-sized forging forming hydraulic press group frame fuselage, comprise pull bar and locknut, it is characterized in that, described pull bar is from top to bottom successively through the Pressure-bearing pads of the Pressure-bearing pads on top, entablature, column, sill and bottom, described Pressure-bearing pads is installed on the installed surface of fuselage by hold-down screw, and described locknut is screwed into the two ends up and down of pull bar respectively.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420696731.XU CN204321059U (en) | 2014-11-19 | 2014-11-19 | A kind of pre-tightening apparatus of large-sized forging forming hydraulic press group frame fuselage |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420696731.XU CN204321059U (en) | 2014-11-19 | 2014-11-19 | A kind of pre-tightening apparatus of large-sized forging forming hydraulic press group frame fuselage |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN204321059U true CN204321059U (en) | 2015-05-13 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201420696731.XU Active CN204321059U (en) | 2014-11-19 | 2014-11-19 | A kind of pre-tightening apparatus of large-sized forging forming hydraulic press group frame fuselage |
Country Status (1)
| Country | Link |
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| CN (1) | CN204321059U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106475509A (en) * | 2016-12-05 | 2017-03-08 | 重集团大连设计研究院有限公司 | A kind of large-scale combined hydraulic press frame structure for being capable of constantly pretension |
-
2014
- 2014-11-19 CN CN201420696731.XU patent/CN204321059U/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106475509A (en) * | 2016-12-05 | 2017-03-08 | 重集团大连设计研究院有限公司 | A kind of large-scale combined hydraulic press frame structure for being capable of constantly pretension |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant |