CN203541249U - Novel expanding head structure - Google Patents
Novel expanding head structure Download PDFInfo
- Publication number
- CN203541249U CN203541249U CN201320613748.XU CN201320613748U CN203541249U CN 203541249 U CN203541249 U CN 203541249U CN 201320613748 U CN201320613748 U CN 201320613748U CN 203541249 U CN203541249 U CN 203541249U
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- CN
- China
- Prior art keywords
- expansion block
- expanding head
- positioning disk
- pull bar
- head structure
- 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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Abstract
The utility model discloses a novel expanding head structure which comprises a draw rod and a conical head wrapping at the periphery of one end of the draw rod, wherein the conical head is externally provided with an expansion block, and the outer side of the other end of the draw rod is provided with a positioning disk connected with the expansion block; a T-shaped key fixedly arranged at the end of the expansion block is arranged between the positioning disk and the expansion block; the positioning disk is provided with a T-shaped slot into which the T-shaped key can be embedded. According to the novel expanding head structure, the positioning disk arranged at the outer side of the draw rod and the expansion block are connected by virtue of the T-shaped key and the T-shaped slot, so that draw rod section reduction caused by a guide device arranged between a draw rod body and the positioning disk can be avoided, the structure can ensure the working safety of an expanding head and can be used for effectively improving the working capability and working efficiency of the expanding head, and the novel expanding head structure is used in the fields of pipeline manufacturing and processing.
Description
Technical field
The utility model relates to pipeline manufacture and manufacture field, particularly relates to a kind of expanding head structure of steel pipe mechanical formula expanding machine.
Background technology
At present, the principle of domestic mechanical expansion equipment is all to swell by using pull bar to pull conehead to make to dilate mould, thereby uses steel pipe to reach the effect of hole enlargement.
Dilate the T-shaped chute that mould is provided with by conehead and drive to reset, because pull bar in expanding head is the effect of tension power in the course of the work, its minimal risk cross section has directly determined ability to work and the operating efficiency of expanding machine.
It is on the ERW between 406mm to 762mm that oily for present deep-sea, gas steel pipe all concentrates on diameter, and this steel pipe all has the features such as diameter is little, material quality is high, tubing heavy wall.Because be that deep-sea is used, so eliminating steel pipe internal stress is even more important, the tubulation apparatus of eliminating now steel pipes with straight internal stress is mainly mechanical type expanding machine, but the structure problem of the expanding head to diameter 406mm pipe expanding now, the pull bar minimal risk cross section that it is used is smaller, and this directly affects ability to work and the operating efficiency of expanding machine.
Utility model content
For addressing the above problem, the utility model provides a kind of novel expanding head structure that can effectively increase pull bar minimal risk cross section.
The utility model solves the technical scheme that its technical problem adopts:
A kind of novel expanding head structure, comprise pull bar and be wrapped in the conehead of periphery, pull bar one end, conehead is provided with expansion block outward, the outside of the pull bar other end is provided with the positioning disk being connected with expansion block, between positioning disk and expansion block, be provided with the T-shaped key that is fixedly mounted on expansion block termination, positioning disk is provided with the T-shaped groove that can embed T-shaped key.
Be further used as the improvement of technical solutions of the utility model, T-shaped key is provided with spring groove, is provided with spring in spring groove, and the outer end of spring is provided with the pressing plate of holddown spring.
Be further used as the improvement of technical solutions of the utility model, the outer end that is positioned at conehead on pull bar is also provided with the spigot nut being connected with pull rod screw, and spigot nut is provided with positioning sleeve outward, between positioning sleeve and expansion block, is provided with flat spring.
Be further used as the improvement of technical solutions of the utility model, one end of flat spring is fixed between positioning sleeve and spigot nut, and the other end of flat spring is fixed on the periphery of expansion block termination.
The beneficial effects of the utility model: this novel expanding head structure is connected with T-slot by T-shaped key between the positioning disk of pull bar arranged outside and expansion block, can avoid, between bar body and positioning disk, guider is set and cause pull bar cross section to reduce, this structure has ensured the security of expanding head work, can effectively improve ability to work and the operating efficiency of expanding head.
Accompanying drawing explanation
Below in conjunction with accompanying drawing, the utility model is described in further detail:
Fig. 1 is the utility model embodiment overall structure schematic diagram.
The specific embodiment
With reference to Fig. 1, the utility model is a kind of novel expanding head structure, comprise pull bar 1 and be wrapped in the conehead 2 of pull bar 1 periphery, one end, the outer expansion block 3 that is provided with of conehead 2, the outside of pull bar 1 other end is provided with the positioning disk 4 being connected with expansion block 3, between positioning disk 4 and expansion block 3, be provided with the T-shaped key 5 that is fixedly mounted on expansion block 3 terminations, positioning disk 4 is provided with the T-shaped groove that can embed T-shaped key 5.
This novel expanding head structure is connected with T-slot by T-shaped key 5 between the positioning disk 4 of pull bar 1 arranged outside and expansion block 3, can avoid, between pull bar 1 body and positioning disk 4, guider is set and cause pull bar 1 cross section to reduce, this structure has ensured the security of expanding head work, can effectively improve ability to work and the operating efficiency of expanding head.
Between T-shaped key 5 and T-shaped groove, coordinate the guiding that can be used as expansion block 3 radial motions, avoided guiding and resetting structure being set between pull bar and positioning disk and the shortcoming that causes minimal risk cross section to reduce in the past.
As the utility model preferred embodiment, T-shaped key 5 is provided with spring groove, is provided with spring 51 in spring groove, and the outer end of spring 51 is provided with the pressing plate 6 of holddown spring 51.
Spring groove is arranged on the boss of T-shaped key 5 ends, and spring 51 together compresses by boss and pressing plate 6, makes expansion block 3 small ends obtain the restoring force resetting.
As the utility model preferred embodiment, the outer end that is positioned at conehead 2 on pull bar 1 is also provided with the spigot nut 11 being threaded with pull bar 1, and spigot nut 11 is outer is provided with positioning sleeve 12, between positioning sleeve 12 and expansion block 3, is provided with flat spring 13.
As the utility model preferred embodiment, one end of flat spring 13 is fixed between positioning sleeve 12 and spigot nut 11, and the other end of flat spring 13 is fixed on the periphery of expansion block 3 terminations.
Certainly, the invention is not limited to above-mentioned embodiment, those of ordinary skill in the art also can make equivalent variations or replacement under the prerequisite without prejudice to the utility model spirit, and the modification that these are equal to or replacement are all included in the application's claim limited range.
Claims (4)
1. a novel expanding head structure, it is characterized in that: comprise pull bar (1) and be wrapped in the conehead (2) of described pull bar (1) periphery, one end, the outer expansion block (3) that is provided with of described conehead (2), the outside of described pull bar (1) other end is provided with the positioning disk (4) being connected with expansion block (3), between described positioning disk (4) and expansion block (3), be provided with the T-shaped key (5) that is fixedly mounted on expansion block (3) termination, described positioning disk (4) is provided with the T-shaped groove that can embed T-shaped key (5).
2. novel expanding head structure according to claim 1, is characterized in that: described T-shaped key (5) is provided with spring groove, is provided with spring (51) in described spring groove, and the outer end of described spring (51) is provided with the pressing plate (6) of holddown spring (51).
3. novel expanding head structure according to claim 1 and 2, it is characterized in that: the outer end that is positioned at conehead (2) on described pull bar (1) is also provided with the spigot nut (11) being threaded with pull bar (1), described spigot nut (11) is outer is provided with positioning sleeve (12), between described positioning sleeve (12) and expansion block (3), is provided with flat spring (13).
4. novel expanding head structure according to claim 3, is characterized in that: one end of described flat spring (13) is fixed between positioning sleeve (12) and spigot nut (11), and the other end of described flat spring (13) is fixed on the periphery of expansion block (3) termination.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201320613748.XU CN203541249U (en) | 2013-09-30 | 2013-09-30 | Novel expanding head structure |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201320613748.XU CN203541249U (en) | 2013-09-30 | 2013-09-30 | Novel expanding head structure |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN203541249U true CN203541249U (en) | 2014-04-16 |
Family
ID=50459418
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201320613748.XU Expired - Fee Related CN203541249U (en) | 2013-09-30 | 2013-09-30 | Novel expanding head structure |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN203541249U (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103978117A (en) * | 2014-05-21 | 2014-08-13 | 无锡双友石化机械有限公司 | Expanding head wedge block installing structure |
| CN104001817A (en) * | 2014-06-19 | 2014-08-27 | 湘潭华进科技有限公司 | Expanding die effectively avoiding straight flanges |
| CN104438898A (en) * | 2014-11-19 | 2015-03-25 | 天水锻压机床(集团)有限公司 | Reset mechanism and reset method for small expanding head die of expanding mill |
-
2013
- 2013-09-30 CN CN201320613748.XU patent/CN203541249U/en not_active Expired - Fee Related
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103978117A (en) * | 2014-05-21 | 2014-08-13 | 无锡双友石化机械有限公司 | Expanding head wedge block installing structure |
| CN104001817A (en) * | 2014-06-19 | 2014-08-27 | 湘潭华进科技有限公司 | Expanding die effectively avoiding straight flanges |
| CN104438898A (en) * | 2014-11-19 | 2015-03-25 | 天水锻压机床(集团)有限公司 | Reset mechanism and reset method for small expanding head die of expanding mill |
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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: 20140416 Termination date: 20170930 |
|
| CF01 | Termination of patent right due to non-payment of annual fee |