CN102990276A - Adjustable inner circle stretcher - Google Patents
Adjustable inner circle stretcher Download PDFInfo
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- CN102990276A CN102990276A CN2012105027001A CN201210502700A CN102990276A CN 102990276 A CN102990276 A CN 102990276A CN 2012105027001 A CN2012105027001 A CN 2012105027001A CN 201210502700 A CN201210502700 A CN 201210502700A CN 102990276 A CN102990276 A CN 102990276A
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- semicircle
- inner circle
- plugs
- pin
- core rods
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Abstract
The invention provides an adjustable inner circle stretcher comprising two semicircular core rods, an anti-skewing pin and two tapered stretching screws, wherein the two semicircular core rods are formed by dividing the same core rod; a through hole matched with the anti-skewing pin is formed in the middle of each of the two semicircular core rods; the two semicircular core rods are connected with the anti-skewing pin through the through holes; both ends of the two semicircular core rods are provided with internal threads matched with the two tapered stretching screws; and the tapered stretching screws are tightly screwed with both ends of the two semicircular core rods until the two semicircular core rods are stretched into a circle. In addition, four cambered adjusting cushion blocks are further arranged on the outer circular surfaces of the semicircular core rods; each cambered adjusting cushion block is correspondingly provided with a positioning pin; blind holes matched with the positioning pins are formed in the outer circles of both ends of the two semicircular core rods; and the cambered adjusting cushion blocks are connected with both ends of the two semicircular core rods through the positioning pins and the blind holes. The adjustable inner circle stretcher is good in effect of circularly stretching pipe fittings, low in cost, easy to manufacture, adjustable in diameter and convenient to mount and demount.
Description
Technical field
The present invention relates to prevent in the truss welding structure that thin-wall pipe from welding diastrophic frock, be specifically related to a kind of adjustable inner circle support tool.
Background technology
Being welded in the various product structure of pipe fitting is widely used, the minor diameter thin wall pipe problem on deformation that is caused by welding, prior art is by taking reversible deformation, interspersed pole and postwelding corrective action, the pole that often occurs interting can not take out at postwelding, and correction can make pipe produce new distortion, especially there are strict requirements to pipe fitting axiality and circularity for postwelding, with the pipe fitting endoporus structure of matching requirements arranged, and do not have at present effective way.
Summary of the invention
The technical problem to be solved in the present invention is, for remedying existing pipe fitting welding above shortcomings, and, a kind of axiality behind the pipe fitting welding and circularity, simple in structure, simple load and unload adjustable inner circle support tool of guaranteeing is provided.
The present invention solves the problems of the technologies described above the technical scheme that adopts to be:
A kind of adjustable inner circle support tool, it comprises two semicircle plugs, an anti-offset pin, two taper stretching screws, described two semicircle plugs are divided into two by same plug, through hole that matches with anti-offset pin of middle part processing of two semicircle plugs, two semicircle plugs pass through this through hole and are connected anti-offset pin connection; The two ends of two semicircle plugs are provided with the internal thread that matches with taper stretching screw, and taper stretching screw screws until hold round by the two ends of this internal thread and two semicircle plugs.
In such scheme, described through hole keeps vertical with anti-offset pin with the divisional plane of two semicircle plugs.
In such scheme, the length of described anti-offset pin is less than the diameter of two semicircle plugs.
In such scheme, the material of described two semicircle plugs, anti-offset pin and two taper stretching screws is carbon steel.
In such scheme, be provided with the spacing of 5mm between described two semicircle plugs.
In such scheme, also be provided with four arcs on the up and down periphery at two ends, described two semicircle plug left and right sides and adjust cushion block, each arc is adjusted the cushion block correspondence and is provided with an alignment pin, cylindrical place, described two semicircle plug two ends has the blind hole that matches with alignment pin, and four arcs are adjusted cushion block and linked to each other with two semicircle plug two ends with this blind hole by alignment pin.
In such scheme, the cambered surface that described arc is adjusted cushion block cooperates with the periphery at two semicircle plug two ends.
In such scheme, the material that described arc is adjusted cushion block is stainless steel material.
Operation principle of the present invention: two semicircle plugs are connected with anti-offset pin, and the loading and unloading of the taper stretching screw by two semicircle plug two ends strut and fold the semicircle plug, can control the again purpose of easy removal of distortion, stretching pipe spare but reach.Be provided with the spacing of 5mm between two semicircle plugs, be convenient to observation and the dismounting of semicircle plug.The up and down periphery at two ends, the semicircle plug left and right sides has been set up arc and has been adjusted cushion block and alignment pin, thereby has increased the scope of application of inner circle support tool, and arc is adjusted the thickness of cushion block and determined by the internal diameter of pipe fitting to be held round.
Beneficial effect of the present invention: the welding deformation that has solved the minor diameter thin wall pipe fitting of various metal materials, particularly to the single short straight tube of the yielding materials such as aluminium alloy, stainless steel, and require many to have the welding deformation of coaxial requirement to control effectively with footpath or Different Diameter pipe fitting; It is effective that this adjustable inner circle support tool holds round pipe fitting, improved product quality, and cost is low, be easy to make, and diameter capable of regulating, mounting or dismounting are convenient, have solved complicated problem by simple structure.
Description of drawings
Fig. 1 is the structural representation of the adjustable inner circle support of the present invention tool.
Fig. 2 be Fig. 1 along A-A to cutaway view.
Fig. 3 is that the present invention increases the structural representation after arc is adjusted cushion block.
Fig. 4 be Fig. 3 along B-B to cutaway view.
Among the figure: 1-semicircle plug, the anti-offset pin of 2-, 3-taper stretching screw, the 4-arc is adjusted cushion block, 5-alignment pin.
The specific embodiment
Below in conjunction with embodiment and accompanying drawing technical scheme of the present invention is described further.
With reference to Fig. 1 ~ shown in Figure 2, a kind of adjustable inner circle support tool of the present invention, it comprises two semicircle plugs 1, an anti-offset pin 2, two taper stretching screws 3, described two semicircle plugs 1 are divided into two by same plug, through hole that matches with anti-offset pin 2 of middle part processing of two semicircle plugs 1, two semicircle plugs 1 pass through this through hole and are connected anti-offset pin 2 connections; The two ends of two semicircle plugs 1 are provided with the internal thread that matches with taper stretching screw 3, and taper stretching screw 3 screws until hold round by the two ends of this internal thread and two semicircle plugs 1.
Described through hole and anti-offset pin 2 keep vertical with the divisional plane of two semicircle plugs 1, and anti-offset pin 2 cooperates suitably with two semicircle plugs 1, have not only played position-limiting action but also have not affected the folding of two semicircle plugs 1.
The length of described anti-offset pin 2 is less than the diameter of two semicircle plugs 1.
The material of described two semicircle plugs 1, anti-offset pin 2 and two taper stretching screws 3 is carbon steel.
Be provided with the spacing of 5mm between described two semicircle plugs 1.
With reference to Fig. 3 ~ shown in Figure 4, in order to increase the scope of application of inner circle support tool of the present invention, adapt to the requirement that holds round of adjacent diameter pipe fitting, also be provided with four arcs on the periphery effectively supportting up and down of two ends, described two semicircle plug 1 left and right sides of Fig. 1 ~ Fig. 2 and adjust cushion block 4, each arc is adjusted cushion block 4 correspondences and is provided with an alignment pin 5, described two semicircle plug 1 two ends are effectively supportted the cylindrical place and are had the blind hole that matches with alignment pin 5, and four arcs are adjusted cushion block 4 and linked to each other with two semicircle plug 1 two ends with this blind hole by alignment pin 5.
The cambered surface that described arc is adjusted cushion block 4 cooperates processing with effective support periphery at two semicircle plug 1 two ends, and both fit closely.
Described arc is adjusted the material of cushion block 4 and is selected according to holding round tube material, adopts stainless steel material for avoiding the steel pipe fitting carburizing.
During work, the anti-offset pins 2 of two semicircle plug 1 usefulness are connected, the loading and unloading of the taper stretching screw 3 by two semicircle plug 1 two ends strut and fold semicircle plug 1, can control the again purpose of easy removal of distortion, stretching pipe spare but reach; Be provided with the spacing of 5mm between two semicircle plugs 1, be convenient to observation and the dismounting of semicircle plug; The periphery that effectively supports up and down at two ends, semicircle plug 1 left and right sides has been set up arc adjustment cushion block 4 and alignment pin 5, thereby has increased the scope of application of inner circle support tool, and arc is adjusted the thickness of cushion block 4 and determined by the internal diameter of pipe fitting to be held round.
Above-described only is preferred embodiment of the present invention, certainly can not limit with this interest field of the present invention, and the equivalence of therefore doing according to the present patent application claim changes, and still belongs to protection scope of the present invention.
Claims (7)
1. an adjustable inner circle supports tool, it is characterized in that: it comprises two semicircle plugs (1), an anti-offset pin (2), two taper stretching screws (3), described two semicircle plugs (1) are divided into two by same plug, through hole that matches with anti-offset pin (2) of middle part processing of two semicircle plugs (1), two semicircle plugs (1) pass through this through hole and are connected anti-offset pin (2) connection; The two ends of two semicircle plugs (1) are provided with the internal thread that matches with taper stretching screw (3), and taper stretching screw (3) screws until hold round by the two ends of this internal thread and two semicircle plugs (1).
2. adjustable inner circle as claimed in claim 1 supports tool, it is characterized in that: described through hole keeps vertical with anti-offset pin (2) with the divisional plane of two semicircle plugs (1).
3. adjustable inner circle as claimed in claim 1 supports tool, and it is characterized in that: the length of described anti-offset pin (2) is less than the diameter of two semicircle plugs (1).
4. adjustable inner circle as claimed in claim 1 supports tool, and it is characterized in that: the material of described two semicircle plugs (1), anti-offset pin (2) and two taper stretching screws (3) is carbon steel.
5. adjustable inner circle support tool as claimed in claim 1 is characterized in that: the spacing that is provided with 5mm between described two semicircle plugs (1).
6. adjustable inner circle as claimed in claim 1 supports tool, it is characterized in that: also be provided with four arcs on the up and down periphery at described two semicircle plugs (1) two ends, the left and right sides and adjust cushion block (4), each arc is adjusted cushion block (4) correspondence and is provided with an alignment pin (5), cylindrical place, described two semicircle plugs (1) two ends has the blind hole that matches with alignment pin (5), and four arcs are adjusted cushion block (4) and linked to each other with two semicircle plugs (1) two ends with this blind hole by alignment pin (5).
7. adjustable inner circle as claimed in claim 6 supports tool, it is characterized in that: the material that described arc is adjusted cushion block (4) is stainless steel material.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201210502700.1A CN102990276B (en) | 2012-11-30 | 2012-11-30 | Adjustable inner circle stretcher |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201210502700.1A CN102990276B (en) | 2012-11-30 | 2012-11-30 | Adjustable inner circle stretcher |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN102990276A true CN102990276A (en) | 2013-03-27 |
| CN102990276B CN102990276B (en) | 2015-07-08 |
Family
ID=47919674
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201210502700.1A Active CN102990276B (en) | 2012-11-30 | 2012-11-30 | Adjustable inner circle stretcher |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN102990276B (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108621060A (en) * | 2018-05-31 | 2018-10-09 | 武汉船用机械有限责任公司 | A kind of positioning tool and method of roll adjustment paddle shaft inner oil tube |
| CN110357187A (en) * | 2019-06-28 | 2019-10-22 | 中国电建集团河北工程有限公司 | The group of round low-temperature multiple-effect seawater desalination evaporator is to method |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP1207003A1 (en) * | 2000-11-17 | 2002-05-22 | Werner Jankus | Device for inner centering of tubes to be welded together |
| CN201618934U (en) * | 2009-12-17 | 2010-11-03 | 成都飞机工业（集团）有限责任公司 | Welding positioner of thin-wall rectangular type section |
| CN202461814U (en) * | 2012-01-13 | 2012-10-03 | 凌云工业股份有限公司 | Clamping tooling for laser cut hole of small-diameter thin-wall tube |
| CN202943409U (en) * | 2012-11-30 | 2013-05-22 | 航宇救生装备有限公司 | Adjustable inner circle supporting tool |
-
2012
- 2012-11-30 CN CN201210502700.1A patent/CN102990276B/en active Active
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP1207003A1 (en) * | 2000-11-17 | 2002-05-22 | Werner Jankus | Device for inner centering of tubes to be welded together |
| CN201618934U (en) * | 2009-12-17 | 2010-11-03 | 成都飞机工业（集团）有限责任公司 | Welding positioner of thin-wall rectangular type section |
| CN202461814U (en) * | 2012-01-13 | 2012-10-03 | 凌云工业股份有限公司 | Clamping tooling for laser cut hole of small-diameter thin-wall tube |
| CN202943409U (en) * | 2012-11-30 | 2013-05-22 | 航宇救生装备有限公司 | Adjustable inner circle supporting tool |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108621060A (en) * | 2018-05-31 | 2018-10-09 | 武汉船用机械有限责任公司 | A kind of positioning tool and method of roll adjustment paddle shaft inner oil tube |
| CN110357187A (en) * | 2019-06-28 | 2019-10-22 | 中国电建集团河北工程有限公司 | The group of round low-temperature multiple-effect seawater desalination evaporator is to method |
| CN110357187B (en) * | 2019-06-28 | 2021-11-09 | 中国电建集团河北工程有限公司 | Assembly method of circular low-temperature multi-effect seawater desalination evaporators |
Also Published As
| Publication number | Publication date |
|---|---|
| CN102990276B (en) | 2015-07-08 |
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