CN204430033U - The hot tube expanding machine plug adopting latch to connect and bar jointing structure - Google Patents
The hot tube expanding machine plug adopting latch to connect and bar jointing structure Download PDFInfo
- Publication number
- CN204430033U CN204430033U CN201520040870.1U CN201520040870U CN204430033U CN 204430033 U CN204430033 U CN 204430033U CN 201520040870 U CN201520040870 U CN 201520040870U CN 204430033 U CN204430033 U CN 204430033U
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- Prior art keywords
- plug
- pull bar
- latch
- pin holes
- expanding machine
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- Expired - Fee Related
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Abstract
A kind of adopt latch to connect hot tube expanding machine plug and bar jointing structure, two pin holes are provided with at the link of pull bar and plug, two pin holes are spaced from each other, the axis of two pin holes staggers 90 degree mutually, two pin holes corresponding with two pin holes on pull bar are provided with at plug and the link of pull bar, during connection, the end of plug is inserted in pull bar, pull bar and plug are connected as a single entity by the latch inserted in pin hole by two, insert a split pin respectively at the port of two latches, come off from pull bar to prevent latch.
Description
Technical field
The utility model relates to seamless steel tube production technical field, is specifically related to the syndeton of a kind of hot tube expanding machine plug and pull bar.
Background technology
Along with the maturation of oil and gas pipes conveying technology, the seamless steel pipe used is to heavy caliber, thin-walled development, heavy caliber seamless steel pipe is produced by hot rolling mode, but when adopting hot rolling mode to produce large-diameter and thin-wall pipe, the thickness of tube wall is difficult to control, the required precision that can not meet steel-pipe welding in uneven thickness of tube wall, meanwhile, investment and the production cost of heavy caliber seamless steel pipe Hot Rolling Mill are high.
What existing production large-diameter thin-wall seamless steel pipe adopted is that heat expands technique, by hot tube expanding machine, hot rolled seamless steel tube less for bore is processed into large-caliber thin-walled steel pipe, the large-diameter thin-wall seamless steel pipe production cost that this method is produced is low, the thickness of tube wall is even, can meet the required precision of steel-pipe welding.
The feature that heat expands technique is eddy-current heating steel pipe partial, and heater coil and plug are fixed, and promote steel pipe with certain speed and advance, steel pipe expands required external diameter to by conical plug front end, then justifies into large-caliber thin-walled hot-expanding pipe through school, plug rear end.When heat expands, one end of plug is connected with pull bar, pull bar can coordinate with the plug of plurality of specifications, larger pulling force is born in plug and pull bar junction, the key position of hot tube expanding machine, therefore require plug and pull bar axiality good, can not loosen in hot expansion process, otherwise impact is normal produces, and may occur situation about pulling time serious.
Existing pusher hot tube expanding machine plug and pull bar type of attachment mainly contain Flange joint and are threaded, Flange joint as shown in Figure 1, plug 2 and pull bar 1 pass through Flange joint, Flange joint Problems existing limits by ring flange size, connecting bolt can not design excessive, the reliability that impact connects, and connecting bolt appearance can make plug 2 and pull bar 1 disalignment after loosening; Be threaded as shown in Figure 2, plug 2 adopts with pull bar 1 and is threaded, and the Problems existing that is threaded is that screw thread stands to expand with heat and contract with cold repeatedly, tightens and dismantles difficulty, there will be equally to loosen to make plug and pull bar disalignment in heat expansion process.
Summary of the invention
The purpose of this utility model be overcome prior art above-mentioned deficiency and provide a kind of adopt latch to connect hot tube expanding machine plug and the syndeton of pull bar.
The technical solution of the utility model is: a kind of adopt latch to connect hot tube expanding machine plug and bar jointing structure, two pin holes are provided with at the link of pull bar and plug, two pin holes are spaced from each other, the axis of two pin holes staggers 90 degree mutually, two pin holes corresponding with two pin holes on pull bar are provided with at plug and the link of pull bar, during connection, the end of plug is inserted in pull bar, pull bar and plug are connected as a single entity by the latch inserted in pin hole by two, a split pin is inserted respectively at the port of two latches, come off from pull bar to prevent latch.
The utility model compared with prior art has following features:
Hot tube expanding machine plug and pull bar adopt latch to be connected, install and convenient disassembly quick, centering is good, connects reliable, can prevent from occurring between plug and pull bar in hot expansion process loosening.
Below in conjunction with the drawings and specific embodiments, detailed construction of the present utility model is further described.
Accompanying drawing explanation
Accompanying drawing 1 is plug and the Tiebar structure schematic diagram of existing employing Flange joint;
Accompanying drawing 2 is the plug that is threaded of existing employing and Tiebar structure schematic diagram;
The plug that the employing latch that accompanying drawing 3 provides for the utility model connects and Tiebar structure schematic diagram;
The mandrel structure schematic diagram that accompanying drawing 4 provides for the utility model;
The Tiebar structure schematic diagram of accompanying drawing 5 for providing for the utility model.
Detailed description of the invention
A kind of adopt latch to connect hot tube expanding machine plug and bar jointing structure, two pin hole 1-1 and 1-2 are provided with at pull bar 1 and the link of plug 2, two pin holes are spaced from each other, the axis of pin hole 1-1 and the axis of pin hole 1-2 stagger 90 degree mutually, two pin hole 2-1 and 2-2 corresponding with two pin hole 1-1 and 1-2 on pull bar 1 are provided with at plug 2 and the link of pull bar 1, during connection, the end of plug 2 is inserted in pull bar 1, by the latch 3 in two insertion pin holes and latch 4, pull bar 1 and plug 2 are connected as a single entity, a split pin 5 is inserted respectively at the port of latch 3 and latch 4, come off from pull bar 1 to prevent latch latch 3 and latch 4.
Claims (1)
1. the hot tube expanding machine plug adopting latch to connect and bar jointing structure, it is characterized in that: be provided with two pin holes at the link of pull bar and plug, two pin holes are spaced from each other, the axis of two pin holes staggers 90 degree mutually, two pin holes corresponding with two pin holes on pull bar are provided with at plug and the link of pull bar, during connection, the end of plug is inserted in pull bar, pull bar and plug are connected as a single entity by the latch inserted in pin hole by two, insert a split pin respectively at the port of two latches, come off from pull bar to prevent latch.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520040870.1U CN204430033U (en) | 2015-01-21 | 2015-01-21 | The hot tube expanding machine plug adopting latch to connect and bar jointing structure |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520040870.1U CN204430033U (en) | 2015-01-21 | 2015-01-21 | The hot tube expanding machine plug adopting latch to connect and bar jointing structure |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN204430033U true CN204430033U (en) | 2015-07-01 |
Family
ID=53597953
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201520040870.1U Expired - Fee Related CN204430033U (en) | 2015-01-21 | 2015-01-21 | The hot tube expanding machine plug adopting latch to connect and bar jointing structure |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN204430033U (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110405091A (en) * | 2019-08-05 | 2019-11-05 | 无锡德碳科技股份有限公司 | A kind of determination method of steel pipe thermal expansion plug wall thickness |
| CN110405090A (en) * | 2019-08-05 | 2019-11-05 | 无锡德碳科技股份有限公司 | A kind of heavy caliber seamless steel pipe thermal expansion heating coil external diameter determination method |
| CN112370148A (en) * | 2020-11-14 | 2021-02-19 | 重庆金山医疗器械有限公司 | Argon electrode ceramic body, circular spraying type argon electrode and manufacturing method thereof |
-
2015
- 2015-01-21 CN CN201520040870.1U patent/CN204430033U/en not_active Expired - Fee Related
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110405091A (en) * | 2019-08-05 | 2019-11-05 | 无锡德碳科技股份有限公司 | A kind of determination method of steel pipe thermal expansion plug wall thickness |
| CN110405090A (en) * | 2019-08-05 | 2019-11-05 | 无锡德碳科技股份有限公司 | A kind of heavy caliber seamless steel pipe thermal expansion heating coil external diameter determination method |
| CN112370148A (en) * | 2020-11-14 | 2021-02-19 | 重庆金山医疗器械有限公司 | Argon electrode ceramic body, circular spraying type argon electrode and manufacturing method thereof |
| CN112370148B (en) * | 2020-11-14 | 2022-04-08 | 重庆金山医疗技术研究院有限公司 | Argon electrode ceramic body, circular spraying type argon electrode and manufacturing method thereof |
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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 | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20150701 Termination date: 20180121 |