CN110076486A - The idler wheel gauche form cushion device of pipeline welding - Google Patents
The idler wheel gauche form cushion device of pipeline welding Download PDFInfo
- Publication number
- CN110076486A CN110076486A CN201910357296.5A CN201910357296A CN110076486A CN 110076486 A CN110076486 A CN 110076486A CN 201910357296 A CN201910357296 A CN 201910357296A CN 110076486 A CN110076486 A CN 110076486A
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- China
- Prior art keywords
- cylinder
- liner
- small
- ring
- folding
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Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
- B23K—SOLDERING OR UNSOLDERING; WELDING; CLADDING OR PLATING BY SOLDERING OR WELDING; CUTTING BY APPLYING HEAT LOCALLY, e.g. FLAME CUTTING; WORKING BY LASER BEAM
- B23K37/00—Auxiliary devices or processes, not specially adapted to a procedure covered by only one of the preceding main groups
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
- B23K—SOLDERING OR UNSOLDERING; WELDING; CLADDING OR PLATING BY SOLDERING OR WELDING; CUTTING BY APPLYING HEAT LOCALLY, e.g. FLAME CUTTING; WORKING BY LASER BEAM
- B23K2101/00—Articles made by soldering, welding or cutting
- B23K2101/04—Tubular or hollow articles
- B23K2101/06—Tubes
Abstract
A kind of idler wheel gauche form cushion device of pipeline welding.Main purpose is to provide a kind of idler wheel gauche form pipeline welding auxiliary tool for improving welding quality used in middle small-bore pipeline welding.It is characterized by comprising liner rotor block, the inclined top part of support, long cylinder rotatable parts and folding and unfolding separation units；Wherein, liner rotor block includes ring liner, liner tub, bearing and retaining ring；Supporting inclined top part includes: trivet, ball seat cylinder, positioning pin, steel ball, small planchet, ball seat spring；Long cylinder rotatable parts include: positioning tube, long support cylinder, crank, are rotated for driving device；Folding and unfolding separation unit includes folding and unfolding wheel carrier, pin shaft, support wheel, wheel carrier spring, drawstring, pull ring, and supporting form used to control the device realizes that ring liner is adjacent to tube wall or disconnected.The present apparatus is adjacent to steel pipe inner wall using the rolling of ring liner bias to block welding groove, can form dimpling shape weld seam, and weld seam bearing strength is high.
Description
Technical field
The present invention relates to pipelines to weld auxiliary tool, specifically a kind of used in middle small-bore pipeline welding
For improving the idler wheel gauche form cushion device of welding quality.
Background technique
The application of welding backing can greatly improve welding quality.Currently, being had been developed for both at home and abroad with liner
The pipeline of component welds line-up clamp, spacer technology is applied in the welding procedure of large diameter pipeline.But middle small-bore pipeline
Due to the factor that radial space is narrow, complicated pipeline welding line-up clamp can not be packed into.In recent years, there are some small blocky linings
The easy device of split blocking pipe welding groove is padded, but these bulk liners cannot have shallow arc groove, form weld seam
For straight rather than dimpling shape, weld seam bearing strength is lower.Therefore, in middle small-bore pipeline welding procedure, current lining
There are also some shortcomingss for cushion device.
Summary of the invention
In order to solve the technical problems mentioned in the background art, the present invention provides a kind of idler wheel deflection of pipeline welding
Formula cushion device, this kind of device using ring liner bias rolling be adjacent to steel pipe inner wall achieve the purpose that block welding groove,
Ring liner has shallow arc groove, can form dimpling shape weld seam, weld seam bearing strength is higher.
The technical scheme is that the idler wheel gauche form cushion device of this kind of pipeline welding, including liner roller section
Part, the inclined top part of support, long cylinder rotatable parts and folding and unfolding separation unit；It is characterized by:
The liner rotor block includes ring liner, liner tub, bearing and retaining ring；Wherein,
The ring liner is circular ring shape, and padding among outer wall has an arc-shaped shallow slot；Ring liner is installed in liner tub,
For being adjacent to other side steel pipe inner wall, blocking one section of welding groove in the case where supporting the radial press of inclined top part；The lining
Cylinder pad frame is a short cylinder, and outer wall is for installing ring liner, and inner hole is for installing bearing, a side end face thread mill drilling,
For installing retaining ring；The bearing is radial ball bearing, and two bearings are installed to side by side on long support cylinder, bearing outer ring installation lining
Cylinder pad frame realizes being freely rotated between ring liner and long support cylinder；The retaining ring is a circle with holes, is pacified by bolt
It is attached to liner tub end face, for blocking ring liner and bearing outer ring；
The inclined top part of support includes: trivet, ball seat cylinder, positioning pin, steel ball, small planchet, ball seat spring；Wherein, described
Trivet is that a short cylinder welds together with three small columns, and short cylinder is consolidated for covering in long support cylinder, and with screw
It is fixed；Small column is welded on short cylinder outer wall respectively along three vertical direction, and for connecting ball seat cylinder, small column laterally bores keyway
Hole, for limiting the stroke of positioning pin；The ball seat cylinder is small cylinder, covers on the small column of trivet, installs in ball seat cylinder
Steel ball, small planchet, ball seat spring；Ball seat cylinder outer outlets hole is to omit collapsed shape, prevents steel ball from falling, ball seat cylinder side is opened
Positioning pin is inserted into hole；The positioning pin is small cylinder, is inserted in the side opening of ball seat cylinder and the small column dowel hole of trivet
In, for preventing ball seat cylinder from falling off；The steel ball is packed into ball seat cylinder, for mitigating and the frictional resistance of steel pipe inner wall；It is described
Small planchet is packed into ball seat cylinder, for separating steel ball and ball seat spring；The ball seat spring is small compressed spring, is packed into ball seat
In cylinder, for pressing steel ball；
The inclined top part of support is two sets, is laid out respectively in the front and rear sides of liner rotor block, is used to support device front
Three radial directions, and apply radial pressure on top surface to four direction, so that ring liner is adjacent to steel pipe during scrolling
Inner wall；
The long cylinder rotatable parts include: positioning tube, long support cylinder, crank, are rotated for driving device；Wherein, the positioning
Cylinder is anti-for positioning compared with short cylinder, to cover on long support cylinder, being located at the inclined top part of front support and padding between rotor block
Only bearing play；The long support cylinder is elongated cylindrical, as apparatus main body for installing remaining part on it, and after
The rotation in portion passes to front；Two threaded holes are processed at the front two of long support cylinder, are fixed two trivets by screw
On long support cylinder；A boss, a pair of big trunnion, a ramuscule are processed or welded between two threaded holes of long support cylinder
Ear, boss is for positioning bearing, and tube wall fluting among a pair of big trunnion, for installing folding and unfolding wheel carrier, small trunnion is for installing wheel
Frame spring；Notch and a small groove at the tail portion processing one of long support cylinder, indentation, there are used at little groove for unclamping pull ring
It is blocked after tensing pull ring；The crank is welded into L-type by a quarter butt and a cylinder, and quarter butt is welded in the tail portion of long support cylinder, leads to
Cross shake driving long support cylinder rotation；
The folding and unfolding separation unit includes folding and unfolding wheel carrier, pin shaft, support wheel, wheel carrier spring, drawstring, pull ring, is used for control device
The supporting form of 4th radial direction realizes that ring liner is adjacent to tube wall or disconnected；Wherein, the folding and unfolding wheel carrier is
One small oblique angle strip plate is attached on the big trunnion of a pair of long support cylinder, can swing around axis, realize the function of folding and unfolding support wheel
Energy；Four holes and a protrusion are processed on folding and unfolding wheel carrier, top aperture is used for connecting steel wire ropes；Medial small hole is for passing through pin shaft
It is attached on big trunnion；Aperture is for connecting wheel carrier spring on the right side of lower part；Lower left side has a small protrusion, withstands on when for propping
It pads in tub；Lowest part aperture is used to load onto a pair of of support wheel by pin shaft；The support wheel is a pair of of steamboat, passes through pin shaft
In the aperture of folding and unfolding wheel carrier lower part, for reducing frictional resistance when device is put into or extracts out pipeline；The wheel carrier spring
For small extension spring, it is connected on the right side of the lower part of folding and unfolding wheel carrier between aperture and the small trunnion in front of long support cylinder, for packing up
Folding and unfolding wheel carrier；The drawstring is seizing wire, and the pull ring of folding and unfolding wheel carrier the top aperture and device tail portion of attachment device front is used
In the swing of control folding and unfolding wheel carrier；The pull ring is an annulus, and diameter is slightly larger than the internal diameter of long support cylinder, is placed on long support cylinder
Tail portion indentation, there, for pulling drawstring.
The invention has the following beneficial effects: the beneficial effects of the present invention are: 1, cushion device radial dimension is smaller, it is applicable in
In middle small-bore pipeline；2, ring liner has arc-shaped shallow slot, advantageously forms the bead contour of microprotrusion；3, liner material selects
It can be with copper alloy or ceramic material；4, cushion device is relatively simple for structure, easy to operate.
Detailed description of the invention:
Fig. 1 is the cross-sectional view of cushion device；
Fig. 2 is device cross-sectional view when liner is detached from tube wall；
Fig. 3 is partial sectional view when liner is detached from tube wall；
Fig. 4 is device cross-sectional view when liner withstands on tube wall；
Fig. 5 is partial sectional view when liner withstands on tube wall；
Fig. 6 is the cross section view that liner withstands on tube wall position；
Fig. 7 is the cross section view of folding and unfolding wheel frame portion；
Fig. 8 is the cross-sectional view of long support cylinder；
Fig. 9 is the cross-sectional view of ring liner；
Figure 10 is the cross-sectional view for padding tub；
Figure 11 is the cross section view at trivet position；
Figure 12 is the partial sectional view of ball seat canister portion position；
Figure 13 is the main view of trivet；
Figure 14 is the cutting left view of trivet；
Figure 15 is the cross-sectional view of ball seat cylinder；
Figure 16 is the main view of folding and unfolding wheel carrier；
Figure 17 is the main view of crank.
In figure: 1, positioning tube；2, bearing；3, retaining ring；4, ring liner；5, tub is padded；6, long support cylinder；7, three leg
Frame；8, positioning pin；9, steel ball；10, ball seat cylinder；11, small planchet；12, ball seat spring；13, drawstring；14, pull ring；15, crank；
16, wheel carrier spring；17, folding and unfolding wheel carrier；18, support wheel；19, pin shaft；20, steel pipe；21, weld seam.
Specific embodiment:
The present invention will be further explained below with reference to the attached drawings:
The technical solution adopted by the present invention to solve the technical problems is: device composition includes: liner rotor block, support top partially
Four component, long cylinder rotatable parts, folding and unfolding separation unit parts.
The liner rotor block includes: ring liner, liner tub, bearing, retaining ring, is adjacent to steel pipe for realizing liner
Inner wall blocks welding groove.
The material of the ring liner is ceramic or Cu alloy material, and gasket shapes are circular ring shape, and outer diameter is smaller
In pipe diameter to be welded, padding among outer wall has an arc-shaped shallow slot, is used to form the bead contour of microprotrusion；Ring liner
It is installed in liner tub, in the case where supporting the radial press of inclined top part, is adjacent to other side steel pipe inner wall, blocks one section of weldering
Connect groove.
The liner tub is a short cylinder, and outer wall is for installing ring liner, and inner hole is for installing bearing, a side
Face thread mill drilling, for installing retaining ring.
The bearing is radial ball bearing, and two bearings are installed to side by side on long support cylinder, bearing outer ring installation liner cylinder
Frame realizes being freely rotated between ring liner and long support cylinder.
The retaining ring be a circle with holes, by bolt be installed to liner tub end face, for block ring liner with
And bearing outer ring.
The inclined top part of support includes: trivet, ball seat cylinder, positioning pin, steel ball, small planchet, ball seat spring.
The trivet is that a short cylinder welds together with three small columns, and short cylinder is for covering in long support cylinder
On, and be screwed；Small column is welded on short cylinder outer wall respectively along three vertical direction, small for connecting ball seat cylinder
Cylinder laterally bores dowel hole, for limiting the stroke of positioning pin.
The ball seat cylinder is small cylinder, is covered on the small column of trivet, and steel ball, small planchet, ball seat are installed in ball seat cylinder
Spring；Ball seat cylinder outer outlets hole is to omit collapsed shape, prevents steel ball from falling；Ball seat cylinder lateral opening hole is inserted into positioning pin.
The positioning pin is small cylinder, is inserted in the side opening of ball seat cylinder and the small column dowel hole of trivet, is used for
Prevent ball seat cylinder from falling off.
The steel ball is packed into ball seat cylinder, for mitigating and the frictional resistance of steel pipe inner wall.
The small planchet is packed into ball seat cylinder, for separating steel ball and ball seat spring.
The ball seat spring is small compressed spring, is packed into ball seat cylinder, for pressing steel ball.
The inclined top part of support is two sets, is laid out respectively in the front and rear sides of liner rotor block, is used to support device
Three radial directions of front, and apply radial pressure on top surface to four direction, so that ring liner is adjacent to during scrolling
Steel pipe inner wall.
The long cylinder rotatable parts include: positioning tube, long support cylinder, crank, are rotated for driving device.
The positioning tube is to cover on long support cylinder compared with short cylinder, is located at the inclined top part of front support and liner roller section
Between part, bearing play is prevented for positioning.
The long support cylinder is elongated cylindrical, and length is slightly longer than steel pipe, as apparatus main body for installing it on it
Remaining part part, and the rotation at rear portion is passed to front.Two threaded holes are processed at the front two of long support cylinder, by screw by two
A trivet is fixed on long support cylinder；A boss, a pair of big branch are processed or welded between two threaded holes of long support cylinder
Ear, a small trunnion, boss is for positioning bearing, tube wall fluting among a pair of big trunnion, for installing folding and unfolding wheel carrier, small trunnion
For installing wheel carrier spring；Notch and a small groove at the tail portion processing one of long support cylinder, indentation, there are small for unclamping pull ring
Groove after tensing pull ring for blocking.
The crank is welded into L-type by a quarter butt and a cylinder, and quarter butt is welded in the tail portion of long support cylinder, is driven by shaking
Dynamic long support cylinder rotation.
The folding and unfolding separation unit includes folding and unfolding wheel carrier, pin shaft, support wheel, wheel carrier spring, drawstring, pull ring, for controlling
The supporting form of the 4th radial direction of device realizes that ring liner is adjacent to tube wall or disconnected.
The folding and unfolding wheel carrier is one small oblique angle strip plate, is attached on the big trunnion of a pair of long support cylinder, can put around axis
It is dynamic, realize the function of folding and unfolding support wheel.Four holes and a protrusion are processed on folding and unfolding wheel carrier, top aperture is for connecting steel wire
Rope；Medial small hole is used to be attached to big trunnion by pin shaft；Aperture is for connecting wheel carrier spring on the right side of lower part；Lower left side has one
A small protrusion withstands on liner tub when for propping；Lowest part aperture is used to load onto a pair of of support wheel by pin shaft.
The support wheel is that a pair of of steamboat is put into through pin shaft in the aperture of folding and unfolding wheel carrier lower part for reducing device
Or frictional resistance when extraction pipeline.
The wheel carrier spring is small extension spring, is connected to the front of aperture and long support cylinder on the right side of the lower part of folding and unfolding wheel carrier
Between small trunnion, for packing up folding and unfolding wheel carrier.
The drawstring is seizing wire, and the pull ring of folding and unfolding wheel carrier the top aperture and device tail portion of attachment device front is used
In the swing of control folding and unfolding wheel carrier.
The pull ring is an annulus, and diameter is slightly larger than the internal diameter of long support cylinder, is placed on the tail portion indentation, there of long support cylinder,
For pulling drawstring.
The principle of work and power and operating process of the present apparatus are as follows:
Cushion device is first put into steel pipe inlet to be welded by the first step, and pull ring is pulled to be allowed to hang tag in the tail portion of long support cylinder
At little groove, drawstring pulls folding and unfolding wheel carrier clockwise oscillation, props support wheel, entire support of the cushion device in pipeline is by propping up
The support wheel of the steel ball and folding and unfolding separation unit that support inclined top part undertakes；Then cushion device is pushed into steel pipe, is propped
Support wheel protects ring liner not to be in contact with steel pipe inner wall, avoids ring liner and tube wall collides with damage.(referring to
Fig. 2 and Fig. 3)
Second step, the ring liner to device are moved at steel-pipe welding groove, and pulling pull ring, which is allowed to be placed in after loosening, draws money on credit
The tail portion indentation, there of cylinder is supportted, drawstring loosens pulling force, and folding and unfolding wheel carrier packs up support wheel by wheel carrier spring elongation, and ring liner is propping up
It supports and is adjacent to steel pipe inner wall under the press of inclined top part, block one section of groove to be welded；It is carried out either manually or automatically in pipeline external
Welding, while the crank of agitating device tail portion make the closure of ring liner eccentric rotary with the equidirectional rotation cushion device of welding
Stroke and outside weldings speed sync.(referring to fig. 4, Fig. 5 and Fig. 6)
Third step pulls pull ring to be allowed to hang tag at the tail portion little groove of long support cylinder after the completion of pipeline welding, and drawstring, which pulls, to be received
It puts wheel carrier and props support wheel, ring liner is separated with pipeline-weld, finally extracts cushion device in pipeline out.
Claims (1)
1. a kind of idler wheel gauche form cushion device of pipeline welding, including liner rotor block, the inclined top part of support, long cylinder turn
Dynamic component and folding and unfolding separation unit；It is characterized by:
The liner rotor block includes ring liner, liner tub, bearing and retaining ring；Wherein,
The ring liner is circular ring shape, and padding among outer wall has an arc-shaped shallow slot；Ring liner is installed in liner tub,
For being adjacent to other side steel pipe inner wall, blocking one section of welding groove in the case where supporting the radial press of inclined top part；The lining
Cylinder pad frame is a short cylinder, and outer wall is for installing ring liner, and inner hole is for installing bearing, a side end face thread mill drilling,
For installing retaining ring；The bearing is radial ball bearing, and two bearings are installed to side by side on long support cylinder, bearing outer ring installation lining
Cylinder pad frame realizes being freely rotated between ring liner and long support cylinder；The retaining ring is a circle with holes, is pacified by bolt
It is attached to liner tub end face, for blocking ring liner and bearing outer ring；
The inclined top part of support includes: trivet, ball seat cylinder, positioning pin, steel ball, small planchet, ball seat spring；Wherein, described
Trivet is that a short cylinder welds together with three small columns, and short cylinder is consolidated for covering in long support cylinder, and with screw
It is fixed；Small column is welded on short cylinder outer wall respectively along three vertical direction, and for connecting ball seat cylinder, small column laterally bores keyway
Hole, for limiting the stroke of positioning pin；The ball seat cylinder is small cylinder, covers on the small column of trivet, installs in ball seat cylinder
Steel ball, small planchet, ball seat spring；Ball seat cylinder outer outlets hole is to omit collapsed shape, prevents steel ball from falling, ball seat cylinder side is opened
Positioning pin is inserted into hole；The positioning pin is small cylinder, is inserted in the side opening of ball seat cylinder and the small column dowel hole of trivet
In, for preventing ball seat cylinder from falling off；The steel ball is packed into ball seat cylinder, for mitigating and the frictional resistance of steel pipe inner wall；It is described
Small planchet is packed into ball seat cylinder, for separating steel ball and ball seat spring；The ball seat spring is small compressed spring, is packed into ball seat
In cylinder, for pressing steel ball；
The inclined top part of support is two sets, is laid out respectively in the front and rear sides of liner rotor block, is used to support device front
Three radial directions, and apply radial pressure on top surface to four direction, so that ring liner is adjacent to steel pipe during scrolling
Inner wall；
The long cylinder rotatable parts include: positioning tube, long support cylinder, crank, are rotated for driving device；Wherein, the positioning
Cylinder is anti-for positioning compared with short cylinder, to cover on long support cylinder, being located at the inclined top part of front support and padding between rotor block
Only bearing play；The long support cylinder is elongated cylindrical, as apparatus main body for installing remaining part on it, and after
The rotation in portion passes to front；Two threaded holes are processed at the front two of long support cylinder, are fixed two trivets by screw
On long support cylinder；A boss, a pair of big trunnion, a ramuscule are processed or welded between two threaded holes of long support cylinder
Ear, boss is for positioning bearing, and tube wall fluting among a pair of big trunnion, for installing folding and unfolding wheel carrier, small trunnion is for installing wheel
Frame spring；Notch and a small groove at the tail portion processing one of long support cylinder, indentation, there are used at little groove for unclamping pull ring
It is blocked after tensing pull ring；The crank is welded into L-type by a quarter butt and a cylinder, and quarter butt is welded in the tail portion of long support cylinder, leads to
Cross shake driving long support cylinder rotation；
The folding and unfolding separation unit includes folding and unfolding wheel carrier, pin shaft, support wheel, wheel carrier spring, drawstring, pull ring, is used for control device
The supporting form of 4th radial direction realizes that ring liner is adjacent to tube wall or disconnected；Wherein, the folding and unfolding wheel carrier is
One small oblique angle strip plate is attached on the big trunnion of a pair of long support cylinder, can swing around axis, realize the function of folding and unfolding support wheel
Energy；Four holes and a protrusion are processed on folding and unfolding wheel carrier, top aperture is used for connecting steel wire ropes；Medial small hole is for passing through pin shaft
It is attached on big trunnion；Aperture is for connecting wheel carrier spring on the right side of lower part；Lower left side has a small protrusion, withstands on when for propping
It pads in tub；Lowest part aperture is used to load onto a pair of of support wheel by pin shaft；The support wheel is a pair of of steamboat, passes through pin shaft
In the aperture of folding and unfolding wheel carrier lower part, for reducing frictional resistance when device is put into or extracts out pipeline；The wheel carrier spring
For small extension spring, it is connected on the right side of the lower part of folding and unfolding wheel carrier between aperture and the small trunnion in front of long support cylinder, for packing up
Folding and unfolding wheel carrier；The drawstring is seizing wire, and the pull ring of folding and unfolding wheel carrier the top aperture and device tail portion of attachment device front is used
In the swing of control folding and unfolding wheel carrier；The pull ring is an annulus, and diameter is slightly larger than the internal diameter of long support cylinder, is placed on long support cylinder
Tail portion indentation, there, for pulling drawstring.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910357296.5A CN110076486B (en) | 2019-04-29 | 2019-04-29 | Roller deflection type liner device for pipeline welding |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910357296.5A CN110076486B (en) | 2019-04-29 | 2019-04-29 | Roller deflection type liner device for pipeline welding |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN110076486A true CN110076486A (en) | 2019-08-02 |
| CN110076486B CN110076486B (en) | 2021-02-05 |
Family
ID=67417795
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201910357296.5A Active CN110076486B (en) | 2019-04-29 | 2019-04-29 | Roller deflection type liner device for pipeline welding |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN110076486B (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113042946A (en) * | 2021-04-07 | 2021-06-29 | 刘大宇 | Pipeline welding device capable of reducing influence of gravity on welding seam |
| CN113714726A (en) * | 2021-08-25 | 2021-11-30 | 中国一冶集团有限公司 | Auxiliary device for installing steel pipe welding gasket |
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US3806020A (en) * | 1972-05-12 | 1974-04-23 | Exxon Research Engineering Co | Apparatus for welding of pipe by use of explosives |
| CN2033724U (en) * | 1988-05-12 | 1989-03-08 | 机械工业委员会哈尔滨焊接研究所 | Retrievable padding means for butt-welded pipes |
| US5323950A (en) * | 1993-07-29 | 1994-06-28 | General Dynamics Corporation, Space Systems | Flexible, adjustable welding backup mandrel |
| JPH07314187A (en) * | 1994-05-26 | 1995-12-05 | Teikoku Chuck Kk | Centering/straightening device for welding circular pipe |
| CN107825059A (en) * | 2017-11-02 | 2018-03-23 | 东北石油大学 | Pipeline welding arc cushion device |
-
2019
- 2019-04-29 CN CN201910357296.5A patent/CN110076486B/en active Active
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US3806020A (en) * | 1972-05-12 | 1974-04-23 | Exxon Research Engineering Co | Apparatus for welding of pipe by use of explosives |
| CN2033724U (en) * | 1988-05-12 | 1989-03-08 | 机械工业委员会哈尔滨焊接研究所 | Retrievable padding means for butt-welded pipes |
| US5323950A (en) * | 1993-07-29 | 1994-06-28 | General Dynamics Corporation, Space Systems | Flexible, adjustable welding backup mandrel |
| JPH07314187A (en) * | 1994-05-26 | 1995-12-05 | Teikoku Chuck Kk | Centering/straightening device for welding circular pipe |
| CN107825059A (en) * | 2017-11-02 | 2018-03-23 | 东北石油大学 | Pipeline welding arc cushion device |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113042946A (en) * | 2021-04-07 | 2021-06-29 | 刘大宇 | Pipeline welding device capable of reducing influence of gravity on welding seam |
| CN113714726A (en) * | 2021-08-25 | 2021-11-30 | 中国一冶集团有限公司 | Auxiliary device for installing steel pipe welding gasket |
| CN113714726B (en) * | 2021-08-25 | 2022-12-16 | 中国一冶集团有限公司 | Steel pipe welding liner installation auxiliary device |
Also Published As
| Publication number | Publication date |
|---|---|
| CN110076486B (en) | 2021-02-05 |
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