CN201776578U - Inert gas protective dragging cover in tube for direct seam welding of major diameter tube - Google Patents
Inert gas protective dragging cover in tube for direct seam welding of major diameter tube Download PDFInfo
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- CN201776578U CN201776578U CN 201020519734 CN201020519734U CN201776578U CN 201776578 U CN201776578 U CN 201776578U CN 201020519734 CN201020519734 CN 201020519734 CN 201020519734 U CN201020519734 U CN 201020519734U CN 201776578 U CN201776578 U CN 201776578U
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- cover
- gas hood
- lever arm
- slide rail
- controlled atmosphere
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Abstract
The utility model relates to an inert gas protective dragging cover in the tube for the direct seam welding of a major diameter tube, which comprises a gas cover and a gas guide tube thereof, an elastic gas cover bracket and a slide rail trolley, wherein the elastic gas cover bracket comprises a lever type bracket and a tension spring; the lever type bracket comprises a lever arm and a middle fulcrum seat of the lever arm; the fulcrum seat is arranged on one end surface of the bottom plate of the slide rail trolley; the front end of the lever arm is fixedly connected with the external side of the gas cover; and the rear end of the lever arm is connected with the upper end of the tension spring positioned on the bottom plate of the slide rail trolley. The dragging cover of the utility model has the advantages that the supporting power spring of the gas cover which is originally subjected to high temperature heat conduction and is positioned below the bracket is far away from a high-temperature heat conducting region, and the lever mechanism adopts the material with a low heat conductivity coefficient at the same time, thus the heating of the spring is greatly reduced, and the service life of the spring is greatly enhanced, therefore, the technical problem of low efficacy of the gas protective device because of the deformation of the supporting power spring of the gas cover at the high temperature for a long time is solved so as to greatly enhance the welding efficiency and the welding quality and reduce the production cost.
Description
Technical field
The utility model belongs to welding technology field, particularly relates to a kind of controlled atmosphere device in the pipe weldering.
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, gas shield device is adopted in one of measure of taking usually exactly, discharges inert gas with welding region and air insulated.For example, when the vertical masonry joint welding of big diameter stainless steel pipe, just adopt gas shield device in the pipe at present, it is made of gas hood, elasticity gas hood carriage, slide rail dolly and sliding rail frame.Sliding rail frame is placed in the steel pipe, and is isometric with steel pipe, and the slide rail dolly is installed on the guide rail of sliding rail frame, and is synchronized with the movement with welding gun under the effect of servomotor; And the elasticity gas hood carriage that is installed on the slide rail dolly is made up of supporting plate and support spring; under the elastic force effect of support spring; the oral area that is installed on the gas hood on the supporting plate is more closely amplexiformed with welded tube 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 interior indifferent gas that discharges of gas hood.Yet; gas shield device has more serious defective in the existing aforementioned tube; the high temperature that produces when promptly welding is easy to be delivered on the support spring by gas hood, supporting plate; make spring at high temperature be out of shape, reduce elasticity; cause gas hood and tube wall not to seal and leak gas, thereby influence weldquality.For a long time, although adopted many measures, comprise with high temperature resistant material and make spring or be coated with high-temperature resistant coating that it is all very little to produce effects on the spring surface.The service life of the spring of various materials is all below 16 hours, because spring is short service life, has not only had a strong impact on the usefulness of gas shield device, and the frequent spring of changing has also had a strong impact on welding efficiency, welding quality and production cost in the work.
Summary of the invention
The purpose of this utility model is that the above-mentioned gas protective device is carried out technological improvement, thus provide a kind of rational in infrastructure, use reliable and stable and in the pipe that is used for the welding of large-diameter pipe vertical masonry joint that the life-span is long controlled atmosphere drag cover.
The technical solution of the utility model is: comprise gas hood and wireway thereof, elasticity gas hood carriage and slide rail dolly, lever support and extension spring that described elasticity gas hood carriage is made up of lever arm and intermediate support seat thereof constitute, fulcrum block is installed on little car bottom plate one end face of slide rail, lever arm front end and the gas hood outside is fixedly connected, the lever arm rear end be positioned the little car bottom plate of slide rail on extension spring on be connected.
As preferably, described intermediate support seat is to be made of a counter-seat and the fixed axis that is connected between two stands.
As preferably, described lever arm is made up of the preceding arm of force and the back arm of force, links into an integrated entity by the axle sleeve that can be socketed on the fulcrum block fixed axis between the preceding arm of force and the back arm of force.
As preferably, the preceding arm of force of lever arm is a U-shaped, and its U-shaped two ends are fixedly connected with gas hood two outsides respectively.
As preferably, described lever arm and intermediate support seat thereof all adopt the metal material of low thermal conductivity to make.
The metal material of described low thermal conductivity is preferably stainless steel material.
As preferably, described gas hood is to be made of air guiding base and the tube cover that is connected with air guiding base, the curved limit of periphery suitable for reading that tube covers, and its radian and steel pipe inwall radian match.
As preferably, in the two-tube access gas hood of described wireway with horizontal U-shaped pipe, and on the little car bottom plate of slide rail, two medial surfaces of pressing close to be positioned at the horizontal U-shaped wireway outside the gas hood are provided with a pair of vertical spacing guide pillar.
As preferably, about being positioned at the qi-emitting hole of being offered on the wireway of gas hood and being to and/or downward radially qi-emitting hole.
The beneficial effects of the utility model are: will directly support the elasticity gas hood carriage that gas hood constitutes with the vertical support power spring originally, change lever elasticity gas hood carriage into, the preceding arm of force with lever connects gas hood and the back arm of force connection extension spring of lever, by lever with extension spring as the gas hood supporting motive force, it reaches the effect of same resiliency supported gas hood, but makes the supporting motive force spring that directly is subjected to high temperature heat transfer that is located immediately at the carriage below originally away from the high temperature heat transfer zone; Simultaneously, leverage adopts the low thermal conductivity material, further reduced being heated of spring significantly, greatly improved spring service life, thereby, successfully solved for a long time and caused the low technical barrier of gas shield device usefulness, thereby improved welding efficiency, welding quality greatly and reduced production cost because of gas hood supporting motive force spring is out of shape by high temperature; In addition, also change the qi-emitting hole of being offered on the wireway in the gas hood vertically upward into the side direction qi-emitting hole, avoid welding slag to stop up the defective of qi-emitting hole, and make the gas hood gas distribution more uniform and stable, further improved the gas shield effect of welding.
Description of drawings
Fig. 1 is installed on the interior cross section structure schematic diagram of steel pipe for this device.
Fig. 2 is the structural representation of facing of this device.
Fig. 3 is the perspective view of this device.
Fig. 4 is the lever arm arrangement schematic diagram of elastic bracket in this device.
The specific embodiment
The utility model is described in further detail with embodiment below in conjunction with accompanying drawing.
A kind of interior controlled atmosphere of pipe that is used for the welding of large-diameter pipe vertical masonry joint drags cover, comprises gas hood 7 and wireway 6 thereof, elasticity gas hood carriage 5 and slide rail dolly 4.Present embodiment gas hood 7 reaches the tube cover 72 that is connected with air guiding base by air guiding base 71 and constitutes, the curved limit of periphery suitable for reading of tube cover 72, and its radian and steel pipe inwall radian match; In the two-tube access gas hood 7 of described wireway 6 with horizontal U-shaped pipe, and on slide rail dolly 4 base plates, two medial surfaces of pressing close to be positioned at the horizontal U-shaped wireway 6 outside the gas hood 7 are provided with a pair of vertical spacing guide pillar 42, so that gas hood 7 can move up and down and off normal not along vertical spacing guide pillar 42; For the qi-emitting hole that makes the wireway in the gas hood 7 is not stopped up by the welding slag that the top falls, make the gas hood gas distribution more even simultaneously, about the spy will be positioned at the qi-emitting hole of being offered on the wireway (6) of gas hood (7) (61) and be designed to and/or downward radially qi-emitting hole; Lever support and extension spring 52 that elasticity gas hood carriage 5 is made up of lever arm 53 and intermediate support seat 51 thereof constitute, the intermediate support seat 51 of present embodiment is to be made of a counter-seat 511 and the fixed axis 512 that is connected between two stands, and it is installed on slide rail dolly (4) base plate one end face; Described lever arm 53 is made up of the preceding arm of force 531 and the back arm of force 533, link into an integrated entity by the axle sleeve 532 that is socketed on the fulcrum block fixed axis 512 between the preceding arm of force 531 and the back arm of force 533, the preceding arm of force 531 of lever arm takes the shape of the letter U, its U-shaped two ends are fixedly connected with 7 liang of outsides of gas hood respectively, the back arm of force 533 of lever arm is tabular, and the plate bottom surface is connected with extension spring 52 upper ends on being positioned slide rail dolly 4 base plates.Above-mentioned lever arm 53 and intermediate support seat 51 thereof all adopt the stainless steel material of low thermal conductivity to make, with the temperature of further reduction as the extension spring 52 of power.
When this device is used, be that roller 41 by slide rail dolly 4 is movably installed on the slide rail 31 that is placed in the support 3 in the welded pipe 1, be positioned at gas hood (7) on the slide rail dolly 4 under the effect of elasticity gas hood carriage 5, dynamically cover pastes and is enclosed in around the weld seam welding section of inner wall of welded pipe, and under the control of electrical control gear, make slide rail dolly 4 follow the tracks of the weld seam advanced in unison.
Claims (9)
1. the interior controlled atmosphere of pipe that is used for the welding of large-diameter pipe vertical masonry joint drags cover; comprise gas hood (7) and wireway (6) thereof; elasticity gas hood carriage (5) and slide rail dolly (4); it is characterized in that lever support and extension spring (52) that elasticity gas hood carriage (5) is made up of lever arm (53) and intermediate support seat (51) thereof constitute; fulcrum block (51) is installed on slide rail dolly (4) base plate one end face; lever arm (53) front end and gas hood (7) outside is fixedly connected, lever arm (53) rear end be positioned slide rail dolly (4) base plate on extension spring (52) on be connected.
2. drag cover by controlled atmosphere in the described pipe that is used for large-diameter pipe vertical masonry joint welding of claim 1, it is characterized in that described intermediate support seat (51) be by a counter-seat (511) be connected in fixed axis (512) formation between two stands.
3. drag cover by controlled atmosphere in the described pipe that is used for large-diameter pipe vertical masonry joint welding of claim 1; it is characterized in that described lever arm (53) is made up of the preceding arm of force (531) and the back arm of force (533), link into an integrated entity by the axle sleeve (532) that can be socketed on the fulcrum block fixed axis (512) between the preceding arm of force (531) and the back arm of force (533).
4. drag cover by controlled atmosphere in the described pipe that is used for large-diameter pipe vertical masonry joint welding of claim 3, it is characterized in that the preceding arm of force (531) of described lever arm takes the shape of the letter U, its U-shaped two ends are fixedly connected with gas hood (7) two outsides respectively.
5. drag cover by controlled atmosphere in claim 1 or 2 or the 3 or 4 described pipes that are used for large-diameter pipe vertical masonry joint welding, it is characterized in that described lever arm (53) and intermediate support seat (51) thereof all adopt the metal material of low thermal conductivity to make.
6. drag cover by controlled atmosphere in the described pipe that is used for large-diameter pipe vertical masonry joint welding of claim 5, the metal material that it is characterized in that described low thermal conductivity is a stainless steel material.
7. drag cover by controlled atmosphere in the described pipe that is used for large-diameter pipe vertical masonry joint welding of claim 1; it is characterized in that gas hood (7) is to reach the tube cover (72) that is connected with air guiding base by air guiding base (71) to constitute; the curved limit of periphery suitable for reading of tube cover (72), its radian and steel pipe inwall radian match.
8. drag cover by controlled atmosphere in claim 1 or the 7 described pipes that are used for large-diameter pipe vertical masonry joint welding; it is characterized in that in the two-tube access gas hood (7) of wireway (6) with horizontal U-shaped pipe, and on slide rail dolly (4) base plate, two medial surfaces of pressing close to be positioned at the horizontal U-shaped wireway (6) outside the gas hood (7) are provided with a pair of vertical spacing guide pillar (42).
9. drag cover by controlled atmosphere in the described pipe that is used for large-diameter pipe vertical masonry joint welding of claim 8, about it is characterized in that being positioned at the qi-emitting hole of being offered on the wireway (6) of gas hood (7) (61) and being to and/or downward radially qi-emitting hole.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201020519734 CN201776578U (en) | 2010-09-07 | 2010-09-07 | Inert gas protective dragging cover in tube for direct seam welding of major diameter tube |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201020519734 CN201776578U (en) | 2010-09-07 | 2010-09-07 | Inert gas protective dragging cover in tube for direct seam welding of major diameter tube |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN201776578U true CN201776578U (en) | 2011-03-30 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 201020519734 Expired - Lifetime CN201776578U (en) | 2010-09-07 | 2010-09-07 | Inert gas protective dragging cover in tube for direct seam welding of major diameter tube |
Country Status (1)
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|---|---|
| CN (1) | CN201776578U (en) |
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102398127A (en) * | 2010-09-07 | 2012-04-04 | 浙江久立特材科技股份有限公司 | Pipe internal inert gas protection cover for straight seam welding of large-diameter pipe |
| 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 |
| CN103302378A (en) * | 2012-03-15 | 2013-09-18 | 中国钢铁股份有限公司 | Welding jig |
| CN103862205A (en) * | 2014-03-31 | 2014-06-18 | 成都振中电气有限公司 | Storage device for welding shielding gas |
| CN112935478A (en) * | 2021-02-04 | 2021-06-11 | 湖南理工学院 | Welding device and welding process for hydrogen conveying pipeline for outdoor processing |
-
2010
- 2010-09-07 CN CN 201020519734 patent/CN201776578U/en not_active Expired - Lifetime
Cited By (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102398127A (en) * | 2010-09-07 | 2012-04-04 | 浙江久立特材科技股份有限公司 | Pipe internal inert gas protection cover for straight seam welding of large-diameter pipe |
| CN102398127B (en) * | 2010-09-07 | 2014-08-20 | 浙江久立特材科技股份有限公司 | Pipe internal inert gas protection cover for straight seam welding of large-diameter pipe |
| CN103302378A (en) * | 2012-03-15 | 2013-09-18 | 中国钢铁股份有限公司 | Welding jig |
| 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 |
| CN103862205A (en) * | 2014-03-31 | 2014-06-18 | 成都振中电气有限公司 | Storage device for welding shielding gas |
| CN103862205B (en) * | 2014-03-31 | 2016-09-21 | 青岛玉兰祥商务服务有限公司 | The storage device of welding protection gas |
| CN112935478A (en) * | 2021-02-04 | 2021-06-11 | 湖南理工学院 | Welding device and welding process for hydrogen conveying pipeline for outdoor processing |
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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: 20110330 Effective date of abandoning: 20140820 |
|
| RGAV | Abandon patent right to avoid regrant |