CN202701574U - Large-caliber elbow longitudinal joint gas protecting device - Google Patents
Large-caliber elbow longitudinal joint gas protecting device Download PDFInfo
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- CN202701574U CN202701574U CN 201220351425 CN201220351425U CN202701574U CN 202701574 U CN202701574 U CN 202701574U CN 201220351425 CN201220351425 CN 201220351425 CN 201220351425 U CN201220351425 U CN 201220351425U CN 202701574 U CN202701574 U CN 202701574U
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- air supply
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Abstract
A large-caliber elbow longitudinal joint gas protecting device comprises a gas protecting cover, a supporting pipe support of the gas protecting cover and a support. The gas protecting cover is composed of a gas supplying groove, an edge-replaceable groove connecting ring and a floating supporting groove. The gas supplying groove is sleeved in the floating supporting groove movably, and a plurality of elastic supporting pieces are arranged between the bottoms of the gas supplying groove and the floating supporting grooves. An upper groove ring edge of the edge-replaceable groove connecting ring is an arc edge matched with an inner wall of an elbow, groove edges are just inserted in a gap between the gas supplying groove and the floating supporting groove, and the gas supplying groove is connected with a gas inlet pipe. The floating supporting groove can make sure that an upper end periphery of the edge-replaceable groove connecting ring is attached to the inner wall of the large-caliber elbow throughout in a welding process and prevent inertia protecting gas from leaking in a welding shifting process. Simultaneously, due to the edge-replaceable groove connecting ring, the device can be applied to welding protection of various elbows with different diameters flexibly and conveniently. The whole device is simple and reasonable and stable, flexible and reliable to use.
Description
Technical field
the utility model belongs to welding technology field, particularly relates to inert gas protection device in a kind of pipe in elbow welding.
Background technology
in metal solder, particularly steel alloy welding, invade molten drop and molten bath in order to prevent air, the oxidation that as far as possible alleviates weld metal, one of measure of usually taking, adopt gas shield device exactly, discharges inert gas by welding region and air insulated.Yet elbow welding equipment does not in the market have suitable gas shield device, after welding, easily occur oxidation and defects i.e.cracks affecting welding quality.
summary of the invention
the purpose of this utility model, be to provide a kind of rational in infrastructure, use reliable and stable, applicability is strong large elbow longitudinal joint weldering gas shield device.
the technical solution of the utility model is: a kind of large caliber bend longitudinal joint weldering gas shield device; comprise gas shroud and support pipe support and bearing; described gas shroud is comprised of air supply trough, interchangeable kiss access slot circle, the bracket that floats; described air supply trough pivot bush unit is in the bracket that floats; be provided with some elastic supporting member for supporting optical member between the bottom of air supply trough and unsteady bracket; described interchangeable kiss access slot circle is the arc-shaped side of groove circle limit for matching with elbow interior wall on it; its groove girth sheets just in time is inserted in the gap between air supply trough and unsteady bracket, and described air supply trough is connected with air inlet pipe.
as preferably, the elastic supporting member for supporting optical member arranged between the bottom of described 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 forming with the sleeve that matched its upper end of described guide pillar is fixed on the bottom surface of air supply trough base plate.
as preferably, the gas distribution pipe be connected with air inlet pipe is installed in described air supply trough, described gas distribution pipe left and right sides and/or downside are evenly equipped with radially qi-emitting hole.
as preferably, described support pipe support top is provided with connecting plate, and the fixed axis on described unsteady bracket base is through the connecting hole of connecting plate, and with nut locking.
as preferably, between the base plate of described unsteady bracket and connecting plate and on the fixed axis shaft part between connecting plate and described nut, be separately installed with thrust ball bearing.
as preferably, have a vertical upper breach U-lag hole of passing through for the air inlet pipe level on the header board of described unsteady bracket, have a vertical lower breach U-lag hole of passing through for the air inlet pipe level on the header board of interchangeable kiss access slot circle.
the beneficial effects of the utility model are: in device, designed unsteady bracket can guarantee that the upper end periphery of interchangeable kiss access slot circle in welding process is close to the bassoon elbow interior wall all the time, can prevent preferably the leakage of inert protective gas in the weld displacement process; The design of thrust bearing makes the bracket that floats relatively stable with the weld line position, unsteady bracket sideslip in the time of effectively preventing weld displacement; Simultaneously, owing to having designed interchangeable kiss access slot circle, thereby make this device can be applicable to flexibly and easily the welding protection of various different tube diameters elbows; Single unit system is simple for structure rationally, and use is stable, flexible, reliable, has effectively improved the welding quality of elbow.
The accompanying drawing explanation
the general structure schematic diagram that Fig. 1 is this device.
the side view that Fig. 2 is Fig. 1.
fig. 3 is gas shroud and the structural representation that supports pipe support.
the side view that Fig. 4 is Fig. 3.
the top view that Fig. 5 is Fig. 3.
fig. 6 is the perspective view of the bracket that floats.
the perspective view that Fig. 7 is interchangeable kiss access slot circle.
the perspective view that Fig. 8 is air supply trough.
The specific embodiment
below in conjunction with accompanying drawing, with embodiment, the utility model is described in further detail.
a kind of large caliber bend longitudinal joint weldering gas shield device comprises gas shroud 6 and supports pipe support 3 and bearing 1 that described gas shroud 6 is comprised of air supply trough 11, interchangeable kiss access slot circle 9, the bracket 8 that floats.The air supply trough 11 of the present embodiment is the cuboid groove with unsteady bracket 8, and described 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; Uniformly on the base plate 17 floated in bracket 8 be fixed with four guide pillars 16, be respectively installed with the spring 15 higher than guide pillar 16 on each guide pillar 16, and be fixed with four sleeves 14 with spring 15 corresponding sockets on four guide pillars 16 on the bottom surface of the base plate 13 of air supply trough 11, thereby form the elastic supporting member for supporting optical member floated between bracket 8 and air supply trough 11.Described interchangeable kiss access slot circle 9 is to enclose by header board 25, rear plate 27, left and right plate 26 the bottomless rectangular groove circle that structure forms, the arc-shaped side 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 unsteady bracket 8.Be connected with air inlet pipe 7 on the header board 10 of described air supply trough 11, the U-shaped gas distribution pipe 12 be connected with air inlet pipe 7 is installed in air supply trough 11, the welding slag do not fallen by top for the qi-emitting hole made on gas distribution pipe 12 stops up, make gas distribution more even, the spy is designed to the qi-emitting hole of offering on gas distribution pipe 12 to the left and right and/or downward radial hole simultaneously.Described support pipe support 3 tops are provided with connecting plate 21, and the fixed axis 20 on described unsteady bracket 8 base plates 17 passes the connecting hole of connecting plate 21, and with nut 19 lockings.For the bracket 8 that makes to float can be with the skew of weld seam in welding process flexible rotating, the present embodiment is reaching on fixed axis 20 shaft parts between connecting plate 21 and described nut 19 and is being separately installed with thrust ball bearing 18 between described unsteady bracket 8 base plates 17 and connecting plate 21.In addition, for gas shroud 6 can freely be fluctuated smoothly when working, the unlikely air inlet pipe 7 that is subject to stops, have a vertical upper breach U-lag hole 23 of passing through for air inlet pipe 7 levels on the header board 22 of described unsteady bracket 8, have a vertical lower breach U-lag hole 24 of passing through for air inlet pipe 7 levels on the header board 25 of interchangeable kiss access slot circle 9.
this device, before welding, according to bending radius and the bend pipe internal diameter of large caliber bend, at first chooses suitable interchangeable kiss access slot circle 9, and it directly is inserted between air supply trough 11 and unsteady bracket 8.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 gap of large pipe bend 5 to be welded, then with bolt 2, will support pipe support 3 and be fixed on 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.Interchangeable kiss access slot circle 9, under the effect of the bracket 8 that floats, makes the upper end periphery of interchangeable kiss access slot circle 9 be close to all the time the tube wall around the bend weld welding region, thereby makes the weld metal of welding region obtain the adequately protecting of indifferent gas of air supply trough 11 interior releases.
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 described gas shroud (6) is by air supply trough (11), interchangeable kiss access slot circle (9), the bracket (8) that floats forms, described air supply trough (11) pivot bush unit is in unsteady bracket (8), be provided with some elastic supporting member for supporting optical member between the bottom of air supply trough (11) and unsteady bracket (8), described interchangeable kiss access slot circle (9) is the arc-shaped side of groove circle limit for matching with elbow interior wall on it, its groove girth sheets just in time is inserted in the gap between air supply trough (11) and unsteady bracket (8), described air supply trough (11) is connected with air inlet pipe (7).
2. by large caliber bend longitudinal joint weldering gas shield device claimed in claim 1; it is characterized in that the elastic supporting member for supporting optical member arranged between the bottom of described 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 forming with the sleeve (14) that matched its upper end of described guide pillar (16) is fixed on the bottom surface of air supply trough base plate (13).
3. by large caliber bend longitudinal joint weldering gas shield device claimed in claim 1; it is characterized in that in described air supply trough (11) gas distribution pipe (12) be connected with air inlet pipe (7) is installed, described gas distribution pipe (12) left and right sides and/or downside are evenly equipped with radially qi-emitting hole.
4. by large caliber bend longitudinal joint weldering gas shield device claimed in claim 1; it is characterized in that described support pipe support (3) top is provided with connecting plate (21); fixed axis (20) on described unsteady bracket (8) base plate (17) passes the connecting hole of connecting plate (21), and locks with nut (19).
5. by large caliber bend longitudinal joint claimed in claim 4 weldering gas shield device, between the base plate (17) that it is characterized in that being positioned at described unsteady bracket (8) and connecting plate (21), reach on fixed axis (20) shaft part between connecting plate (21) and described nut (19) and be separately installed with thrust ball bearing (18).
6. by large caliber bend longitudinal joint weldering gas shield device claimed in claim 1; it is characterized in that on the header board (22) of described unsteady bracket (8) having a vertical upper breach U-lag hole (23) of passing through for air inlet pipe (7) level, have a vertical lower breach U-lag hole (24) of passing through for air inlet pipe (7) level on the header board (25) of interchangeable kiss access slot circle (9).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201220351425 CN202701574U (en) | 2012-07-19 | 2012-07-19 | Large-caliber elbow longitudinal joint gas protecting device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201220351425 CN202701574U (en) | 2012-07-19 | 2012-07-19 | Large-caliber elbow longitudinal joint gas protecting device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN202701574U true CN202701574U (en) | 2013-01-30 |
Family
ID=47581914
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 201220351425 Withdrawn - After Issue CN202701574U (en) | 2012-07-19 | 2012-07-19 | Large-caliber elbow longitudinal joint gas protecting device |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN202701574U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102756226A (en) * | 2012-07-19 | 2012-10-31 | 湖州久立管件有限公司 | Longitudinal seam welding gas protective device for heavy caliber bent head |
| CN104985311A (en) * | 2015-07-24 | 2015-10-21 | 上海电气核电设备有限公司 | Additional gas protecting device of tube-tube plate welding gun |
-
2012
- 2012-07-19 CN CN 201220351425 patent/CN202701574U/en not_active Withdrawn - After Issue
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102756226A (en) * | 2012-07-19 | 2012-10-31 | 湖州久立管件有限公司 | Longitudinal seam welding gas protective device for heavy caliber bent head |
| CN102756226B (en) * | 2012-07-19 | 2014-08-13 | 湖州久立管件有限公司 | Longitudinal seam welding gas protective device for heavy caliber bent head |
| CN104985311A (en) * | 2015-07-24 | 2015-10-21 | 上海电气核电设备有限公司 | Additional gas protecting device of tube-tube plate welding gun |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| AV01 | Patent right actively abandoned |
Granted publication date: 20130130 Effective date of abandoning: 20140813 |
|
| RGAV | Abandon patent right to avoid regrant |