CN102756226A - Longitudinal seam welding gas protective device for heavy caliber bent head - Google Patents
Longitudinal seam welding gas protective device for heavy caliber bent head Download PDFInfo
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- CN102756226A CN102756226A CN2012102508654A CN201210250865A CN102756226A CN 102756226 A CN102756226 A CN 102756226A CN 2012102508654 A CN2012102508654 A CN 2012102508654A CN 201210250865 A CN201210250865 A CN 201210250865A CN 102756226 A CN102756226 A CN 102756226A
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Abstract
The invention relates to a longitudinal seam welding gas protective device for a heavy caliber bent head. The device comprises a gas shield, a supporting tube frame for the gas shield and a support for the gas shield, wherein the gas shield comprises a gas supply tank, a replaceable anastomosis tank ring and a floating bracket; the gas supply tank is movably embedded in the floating bracket; a plurality of elastic strutting pieces are arranged between the gas tank and the bottom of the floating bracket; an upper tank ring of the replaceable anastomosis tank ring is an arc-shaped edge matched with the inner wall of the bent head; each tank edge is inserted in a gap between the gas supply tank and the floating bracket; and the gas supply tank is connected with an inlet pipe. The designed floating bracket can ensure that the periphery of the upper end of the replaceable anastomosis tank is always clung to the inner wall of the heavy caliber bent head during welding, so as to further prevent the leakage of the inert protective gas in the welding displacement process; meanwhile, the designed replaceable anastomosis tank ring ensures that the device can be conveniently and flexibly applicable to various welding prevention of bent heads with different pipe diameters; and the whole device is simple and reasonable in structure, and stable, flexible and reliable to use.
Description
Technical field
the invention belongs to welding technology field, particularly relate to inert gas shielding device in a kind of pipe in the elbow welding.
Background technology
are in metal solder, particularly steel alloy welding; Invade molten drop and molten bath, the oxidation that as far as possible alleviates weld metal, one of measure of taking usually in order to prevent air; Adopt gas shield device exactly, discharge inert gas welding region and air insulated.Yet elbow welding equipment does not in the market have suitable gas shield device, occurs defectives such as oxidation and crackle after the welding easily, influences welding quality.
Summary of the invention
the object of the invention provides a kind of big elbow longitudinal joint rational in infrastructure, that use is reliable and stable, applicability is strong and welds gas shield device.
technical scheme of the present invention is: a kind of large caliber bend longitudinal joint weldering gas shield device; Comprise gas shroud and support pipe support and bearing; Said gas shroud by air supply trough, can change kiss access slot circle, the bracket that floats forms; Said air supply trough pivot bush unit is provided with the plurality of elastic support member between the bottom of air supply trough and unsteady bracket in the bracket that floats, said change kiss access slot circle on it groove circle limit be the arc limit of matching with elbow interior wall; Its groove girth sheets just in time is inserted in the gap between air supply trough and the unsteady bracket, and said air supply trough is connected with air inlet pipe.
are as preferred; The elastic supporting member for supporting optical member that is provided with between the bottom of said air supply trough and unsteady bracket is by being fixed in the guide pillar that is set with spring on the bracket inner bottom plating that floats and constituting with sleeve that matched its upper end of said guide pillar is fixed on the bottom surface of air supply trough base plate.
are equipped with the gas distribution pipe that is connected with air inlet pipe as preferred in the said air supply trough, said gas distribution pipe left and right sides and/or downside are evenly equipped with radially qi-emitting hole.
as preferred, said support pipe support top is provided with connecting plate, and the fixed axis on the said unsteady bracket base passes the connecting hole of connecting plate, and locks with nut.
as preferred, is being separately installed with thrust ball bearing between the base plate of said unsteady bracket and the connecting plate and on the fixed axis shaft part between connecting plate and the said nut.
As preferably, have a vertical breach U-lag hole of going up that supplies the air inlet pipe level to pass through on the header board of said unsteady bracket, can change and have a vertical breach U-lag hole down that supplies the air inlet pipe level to pass through on the header board of kissing the access slot circle
the invention has the beneficial effects as follows: the unsteady bracket that is designed in the device can be guaranteed can change in the welding process the last end periphery of kissing the access slot circle and be close to the bassoon elbow interior wall all the time, can prevent the leakage of inert protective gas in the weld displacement process preferably; Feasible unsteady bracket of the design of thrust bearing and weld line position are relatively stable, and the bracket sideslip floats in the time of effectively preventing weld displacement; Simultaneously, can change kiss access slot circle owing to designed, thereby make this device can be applicable to the welding protection of various different tube diameters elbows flexibly and easily; Single unit system is simple for structure rationally, and use is stable, flexible, reliable, has improved the welding quality of elbow effectively.
Description of drawings
Fig. 1 is the general structure sketch map of this device.
Fig. 2 is the side view of Fig. 1.
Fig. 3 is gas shroud and the structural representation that supports pipe support.
Fig. 4 is the side view of Fig. 3.
Fig. 5 is the vertical view of Fig. 3.
Fig. 6 is the perspective view of the bracket that floats.
Fig. 7 is for changing the perspective view of kiss access slot circle.
Fig. 8 is the perspective view of air supply trough.
The specific embodiment
are described further the present invention with embodiment below in conjunction with accompanying drawing.
a kind of large caliber bend longitudinal joint weldering gas shield device comprises gas shroud 6 and supports pipe support 3 and bearing 1, said gas shroud 6 by air supply trough 11, can change kiss access slot circle 9, the bracket 8 that floats is formed.The air supply trough 11 of present embodiment is the cuboid groove with unsteady bracket 8, and said air supply trough 11 is sleeved in the bracket 8 that floats, and four limits of the base plate 13 of air supply trough 11 extend outward and prolong chimb press close to float respectively four side inwalls of bracket 8; Be uniformly distributed with on the base plate 17 in the unsteady bracket 8 and be fixed with four guide pillars 16; Be respectively installed with the spring 15 that is higher than guide pillar 16 on each guide pillar 16; And be fixed with on the bottom surface of the base plate 13 of air supply trough 11 with four guide pillars 16 on four sleeves 14 of spring 15 corresponding sockets, thereby constitute the elastic supporting member for supporting optical member that floats between bracket 8 and the air supply trough 11.The said kiss access slot circle 9 that changes is to enclose the rectangular groove circle in the no end that structure forms by header board 25, back plate 27, left and right sides plate 26; The arc limit of groove circle limit for matching with the bassoon elbow interior wall on it, its four side channels girth sheets just in time is inserted in the gap between air supply trough 11 and the unsteady bracket 8.Be connected with air inlet pipe 7 on the header board 10 of said air supply trough 11; The U-shaped gas distribution pipe 12 that is connected with air inlet pipe 7 is installed in the air supply trough 11; For the qi-emitting hole on the gas distribution pipe 12 is not stopped up by the welding slag that the top falls; Make gas distribution more even simultaneously, the spy is designed to the qi-emitting hole of being offered on the gas distribution pipe 12 to the left and right and/or downward radial hole.Said support pipe support 3 tops are provided with connecting plate 21, and the fixed axis 20 on said unsteady bracket 8 base plates 17 passes the connecting hole of connecting plate 21, and with nut 19 lockings.For the bracket 8 that floats can be rotated with the skew of weld seam in welding process flexibly, present embodiment is being separately installed with thrust ball bearing 18 between said unsteady bracket 8 base plates 17 and the connecting plate 21 and on fixed axis 20 shaft parts between connecting plate 21 and the said nut 19.In addition; In order to make the gas shroud 6 can be when work smooth freely fluctuating and the unlikely air inlet pipe 7 that receives stops; Have a vertical breach U-lag hole 23 of going up that supplies air inlet pipe 7 levels to pass through on the header board 22 of said unsteady bracket 8, can change and have a vertical breach U-lag hole 24 down that supplies air inlet pipe 7 levels to pass through on the header board 25 of kissing access slot circle 9.
this device according to the bending radius and the bend pipe internal diameter of large caliber bend, at first chooses suitable changed kiss access slot circle 9, and it directly is inserted between air supply trough 11 and the unsteady bracket 8 before welding.Adjust the height that supports pipe support 3, and rotational support pipe support 3, rotate gas shroud 6 simultaneously, air supply trough 11 center lines are aimed in the middle of the slit of big pipe bend 5 to be welded, will support pipe support 3 with bolt 2 then and be fixed on the bearing 1.
During
welding, large caliber bend 5 is with rotating disk 4 rotations of positioner, and welding gun and gas shroud 6 are motionless.Can change kiss access slot circle 9 under the effect of the bracket 8 that floats, make the last end periphery that can change kiss access slot circle 9 be close to elbow weld seam welding region tube wall on every side all the time, thereby make the weld metal of welding region obtain adequately protecting of the air supply trough 11 interior indifferent gas that discharge.
Claims (6)
1. a large caliber bend longitudinal joint welds gas shield device; Comprise gas shroud (6) and support pipe support (3) and bearing (1); It is characterized in that said gas shroud (6) by air supply trough (11), can change kiss access slot circle (9), the bracket (8) that floats is formed; Said air supply trough (11) pivot bush unit is in unsteady bracket (8); Be provided with the plurality of elastic support member between the bottom of air supply trough (11) and unsteady bracket (8); Said change kiss access slot circle (9) its to go up groove circle limit be the arc limit of matching with elbow interior wall, its groove girth sheets just in time is inserted in the gap between air supply trough (11) and the unsteady bracket (8), said air supply trough (11) is connected with air inlet pipe (7).
2. by the described large caliber bend longitudinal joint weldering of claim 1 gas shield device; It is characterized in that the elastic supporting member for supporting optical member that is provided with between the bottom of said air supply trough (11) and unsteady bracket (8), is by being fixed in the guide pillar that is set with spring (15) (16) on unsteady bracket (8) inner bottom plating (17) and constituting with sleeve (14) that matched its upper end of said guide pillar (16) is fixed on the bottom surface of air supply trough base plate (13).
3. by the described large caliber bend longitudinal joint weldering of claim 1 gas shield device; It is characterized in that the gas distribution pipe (12) that is connected with air inlet pipe (7) is installed in the said air supply trough (11), said gas distribution pipe (12) left and right sides and/or downside are evenly equipped with radially qi-emitting hole.
4. by the described large caliber bend longitudinal joint weldering of claim 1 gas shield device; It is characterized in that said support pipe support (3) top is provided with connecting plate (21); Fixed axis (20) on said unsteady bracket (8) base plate (17) passes the connecting hole of connecting plate (21), and locks with nut (19).
5. by the described large caliber bend longitudinal joint of claim 4 weldering gas shield device, reach on fixed axis (20) shaft part between connecting plate (21) and the said nut (19) between the base plate (17) that it is characterized in that being positioned at said unsteady bracket (8) and the connecting plate (21) and be separately installed with thrust ball bearing (18).
6. by the described large caliber bend longitudinal joint weldering of claim 1 gas shield device; It is characterized in that having on the header board (22) of said unsteady bracket (8) a vertical breach U-lag hole (23) of going up that supplies air inlet pipe (7) level to pass through, can change on the header board (25) of kiss access slot circle (9) and have a vertical breach U-lag hole (24) down that supplies air inlet pipe (7) level to pass through.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201210250865.4A CN102756226B (en) | 2012-07-19 | 2012-07-19 | Longitudinal seam welding gas protective device for heavy caliber bent head |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201210250865.4A CN102756226B (en) | 2012-07-19 | 2012-07-19 | Longitudinal seam welding gas protective device for heavy caliber bent head |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN102756226A true CN102756226A (en) | 2012-10-31 |
| CN102756226B CN102756226B (en) | 2014-08-13 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201210250865.4A Active CN102756226B (en) | 2012-07-19 | 2012-07-19 | Longitudinal seam welding gas protective device for heavy caliber bent head |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108838588A (en) * | 2017-07-16 | 2018-11-20 | 毛强平 | A kind of industrial robot and its autocontrol method carrying out pipeline weld job |
Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS5933079A (en) * | 1982-08-16 | 1984-02-22 | Nikki Koji Kk | Back seal device for piping welding |
| JPH0890228A (en) * | 1994-09-16 | 1996-04-09 | Japan Steel & Tube Constr Co Ltd | Internal clamp device |
| JP2007190595A (en) * | 2006-01-20 | 2007-08-02 | Nisshin Steel Co Ltd | Inner-surface shield tool for manufacturing welded metal pipe |
| CN201361768Y (en) * | 2009-01-20 | 2009-12-16 | 太原市阳光园不锈钢制品有限公司 | Automatic ring welding reverse-side gas protection device of heavy-caliber stainless steel welding pipe |
| CN201776578U (en) * | 2010-09-07 | 2011-03-30 | 浙江久立特材科技股份有限公司 | Inert gas protective dragging cover in tube for direct seam welding of major diameter tube |
| CN202701574U (en) * | 2012-07-19 | 2013-01-30 | 湖州久立管件有限公司 | Large-caliber elbow longitudinal joint gas protecting device |
-
2012
- 2012-07-19 CN CN201210250865.4A patent/CN102756226B/en active Active
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS5933079A (en) * | 1982-08-16 | 1984-02-22 | Nikki Koji Kk | Back seal device for piping welding |
| JPH0890228A (en) * | 1994-09-16 | 1996-04-09 | Japan Steel & Tube Constr Co Ltd | Internal clamp device |
| JP2007190595A (en) * | 2006-01-20 | 2007-08-02 | Nisshin Steel Co Ltd | Inner-surface shield tool for manufacturing welded metal pipe |
| CN201361768Y (en) * | 2009-01-20 | 2009-12-16 | 太原市阳光园不锈钢制品有限公司 | Automatic ring welding reverse-side gas protection device of heavy-caliber stainless steel welding pipe |
| CN201776578U (en) * | 2010-09-07 | 2011-03-30 | 浙江久立特材科技股份有限公司 | Inert gas protective dragging cover in tube for direct seam welding of major diameter tube |
| CN202701574U (en) * | 2012-07-19 | 2013-01-30 | 湖州久立管件有限公司 | Large-caliber elbow longitudinal joint gas protecting device |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108838588A (en) * | 2017-07-16 | 2018-11-20 | 毛强平 | A kind of industrial robot and its autocontrol method carrying out pipeline weld job |
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| CN102756226B (en) | 2014-08-13 |
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Effective date of registration: 20161214 Address after: 313000 Zhejiang Province, Huzhou city Nanxun District Shuanglin Town West Patentee after: Zhejiang JIULI Hi-Tech Metals Co., Ltd. Address before: Wuxing District of Zhejiang city of Huzhou Province in 313000 eight Zhen Jiuli Stainless Steel Industrial Park Huzhou Jiuli Pipe Co. Patentee before: Huzhou Jiuli Pipe Fitting Co., Ltd. |