CN107116292A - A kind of fixed flash welder equipment of track flat car - Google Patents
A kind of fixed flash welder equipment of track flat car Download PDFInfo
- Publication number
- CN107116292A CN107116292A CN201710464761.6A CN201710464761A CN107116292A CN 107116292 A CN107116292 A CN 107116292A CN 201710464761 A CN201710464761 A CN 201710464761A CN 107116292 A CN107116292 A CN 107116292A
- Authority
- CN
- China
- Prior art keywords
- rail
- track
- frame
- flat car
- flash welder
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Granted
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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
- B23K11/00—Resistance welding; Severing by resistance heating
- B23K11/04—Flash butt welding
-
- 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
- B23K11/00—Resistance welding; Severing by resistance heating
- B23K11/04—Flash butt welding
- B23K11/046—Apparatus therefor
-
- 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
- B23K11/00—Resistance welding; Severing by resistance heating
- B23K11/30—Features relating to electrodes
- B23K11/31—Electrode holders and actuating devices therefor
-
- 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
- B23K11/00—Resistance welding; Severing by resistance heating
- B23K11/36—Auxiliary equipment
-
- 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
- B23K37/04—Auxiliary devices or processes, not specially adapted to a procedure covered by only one of the preceding main groups for holding or positioning work
- B23K37/0426—Fixtures for other work
- B23K37/0435—Clamps
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Physics & Mathematics (AREA)
- Optics & Photonics (AREA)
- Machines For Laying And Maintaining Railways (AREA)
- Butt Welding And Welding Of Specific Article (AREA)
Abstract
The application provides a kind of fixed flash welder equipment of track flat car, including flat car (1) and flash welder (3), characterized in that, flash welder (3) is two, and it is symmetricly set in the middle part of flat car (1).The compact equipment, production efficiency are high, solve the rail distortion problem produced by 3 in Curve Segment weldering rail.Live uninterrupted sequential welding rail can be realized by being fixed on mobile flat car, reduced construction period, reduced production cost, improve operating efficiency.
Description
Technical field
The present invention relates to railway or field of urban rail seamless track steel rail welding procedure field, especially a kind of rail
The fixed flash welder equipment of road flat car.
Background technology
With high-speed railway, heavy haul railway and the fast development of urban track traffic, because the increase of its speed of service, axle increase again
Greatly, this just proposes higher requirement to line track, promotes rail towards high ride, high welding performance, Strengthening and Toughening, heavy duty
The direction of change is continued to develop.Gapless track because of it there is high reliability and high stability to have turned into high-speed overload track structure most
It is preferred that selecting, the welding of gapless line is the key technology for realizing seamless railway.
The flash welding at general scene is that, using portable flash welder, welding machine is loaded in carriage body, or be loaded in can be from
In the railcar of walking.During operation, welder head stretches out car body, and welding has been placed in line side or has been placed on the steel of rail support groove
Rail.Can only once weld a joint, and rail must in advance discharge in place, operating efficiency is relatively low.
Existing gapless track scene flash of light soldering equipment, usually using mobile flash welder, is loaded in container body
Or self-walking track is in-car, during weld job, rail to be welded must carry previous skylight point be placed on line side side or
Put to rail support groove.Second skylight point carries out weld job, can only once weld a joint.3rd skylight point, by
Substantial amounts of workman transfers to relayable rail, and the new rail welded sets right, and is put into rail support groove.And in next skylight point by old rail evidence
It is short, put away.The whole process that switches tracks at least needs four skylight points, and the time is long, and efficiency is low, it is necessary to which a large amount of hand fits, rail exists
Railway roadbed will at least be deposited four days, serious to threaten both wired traffic safety.
The content of the invention
To overcome existing defect, the present invention proposes a kind of fixed flash welder equipment of track flat car.
A kind of fixed flash welder equipment of track flat car, including flat car and flash welder, flash welder are two,
And it is symmetricly set in the middle part of flat car.
Further, flash welder side is set into track to track device and rail locating rack on the flat car, wherein, it is described enter
Track to track device and rail locating rack are two, and are symmetricly set on flat car；Flash welder opposite side on the flat car
Rail locating rack, hydraulic station are set, go out track to track device and decelerator, wherein, the rail locating rack, hydraulic station, go out track to track
Device and decelerator are two, and are symmetricly set on flat car.
Further, the decelerator sets oil cylinder and ratio wheel.
Further, the flash welder bottom sets hydraulic motor, and slide rail is set between rail locating rack and flash welder,
Wherein, welding machine gear is set on flash welder；Rack is set on slide rail, and the hydraulic motor is driven on welding machine gear and slide rail
Rack is engaged.
Further, moving frame and quiet frame are set on the flash welder.
Further, the quiet frame rail clamping cylinder lower end connection transformer of quiet frame on the flash welder, the transformer
Lower end connection electrode, quiet frame while install horizontal direction the first quiet frame oil cylinder and the second quiet frame oil cylinder, the first quiet frame oil cylinder and
The first quiet frame strut and the second quiet frame strut are installed in second quiet frame oil cylinder front end, and the first quiet frame strut of quiet frame oil cylinder start first enters
The motion of row horizontal direction, the second quiet frame strut of quiet frame oil cylinder start second carries out the motion of horizontal direction.
Further, the moving frame top and bottom on the flash welder are separately installed with the first moving frame clamping of vertical direction
Oil cylinder and the second moving frame clamping cylinder, the first moving frame clamping cylinder and the second moving frame clamping cylinder respectively with Top electrode and bottom electrode
It is connected；Moving frame the right and left is separately installed with moving frame oil cylinder and moving frame strut.
By the fixed flash welder equipment of track flat car of the present invention, by being symmetrically mounted on track flat car
Fixed flash welder, carry out both it is wired change paving operation when, relayable rail fastener is removed, by track taking-up vehicle by relayable rail transfer to hold
Track slot places curb, and old rail saw is put away old rail by track taking-up vehicle into 25 meters of length rails.At the same time, in weldering rail flat car
On by 500 meters of Long rail weldings into 1.5 kilometers of gapless lines, and can two strands simultaneously welding procedures, weldering rail flat car will weld
Two strands of new rails be laid immediately on rail support groove, then by workman's fastener for installing.Whole replacement work operation can one " my god
Window " point is once completed, and real realize changes paving institutional operation.The replacement work activity duration is greatlyd save, labor hour is reduced, carries
High efficiency of construction.Change after the completion of paving operation, curb is deposited in scene without rail, so that during substantially increasing replacement work operation
Both wired traffic safety.
The compact equipment, production efficiency are high, solve the rail distortion problem produced by 3 in Curve Segment weldering rail.It is fixed
Live uninterrupted sequential welding rail can be realized on mobile flat car, construction period is reduced, reduces production cost, work effect is improved
Rate.
Brief description of the drawings
Fig. 1 is the fixed flash welder equipment schematic diagram of track flat car.
Fig. 2 is flash welder schematic diagram.
Embodiment
A kind of fixed flash welder of track flat car provided below in conjunction with the accompanying drawings with specific embodiment the present invention is set
It is standby to be described in detail.
Fig. 1 and Fig. 2 show that the front end of the first one steel rail 2 is equipped with symmetrical flash welder 3 by right with certain speed to left pass through
Flat car 1, the regulation of horizontal direction is carried out by entering track to track device 11 to rail, subsequently into the first rail locating rack 12, the
One rail locating rack 12 treats welding steel rail 2 and carries out Primary Location, and rail 2 is entered by the moving frame 31 and quiet frame 32 of flash welder 3
Second rail locating rack 14, rail 2 passes through the support of hydraulic station 13, and goes out track to track device 15, by going out 15 pairs of track to track device
Middle regulation rail 2 simultaneously enters decelerator 16, treats that the rear end of the first one steel rail 2 enters the quiet frame 32 of flash welder 3, decelerator 16 passes through
The speed of rail 2 is reduced to zero by the start ratio wheel 18 of oil cylinder 17.The quiet lower end of frame rail clamping cylinder 33 connects transformer 34, in transformation
The lower end connection electrode 35 of device 34, by the clamping cylinder 33 and electrode 35 installed in the quiet upper end of frame 32 by the front end of the first one steel rail 2
Vertical orientations are fixed.Quiet one side of frame 32 is provided with the first quiet frame oil cylinder 37 of quiet frame oil cylinder 36 and second of horizontal direction, and first is quiet
The quiet front end of frame oil cylinder 37 of frame oil cylinder 36 and second is provided with the first quiet frame strut 39 of quiet frame strut 38 and second, the first quiet frame oil cylinder
36 can carry out the motion of horizontal direction with the quiet frame strut 38 of start first, and the second quiet frame oil cylinder 37 can also the support of the quiet frame of start second
Bar 39 carries out the motion of horizontal direction.The first quiet frame oil cylinder 37 of quiet frame oil cylinder 36 and second is supportted by the first coupled quiet frame
The front end level orientation of 39 pair of first one steel rail of the quiet frame strut of bar 38 and second 2 is fixed.
Determine from right to left by entering the first rail after entering the regulation of the horizontal direction of track to track device 11 the second one steel rail front end
Position frame 12, the first 12 pair second of rail locating rack one steel rail front end carries out primary contraposition regulation, and the second one steel rail front end, which enters, to be dodged
The moving frame 31 of welding machine 3, in relaxed state.
Drive the rack 22 on welding machine gear 20 and slide rail 21 to engage by the hydraulic motor 19 of flash welder bottom, drive
Flash welder 3 carries out the primary of level orientation to flash welder 3 along slide rail 21 and adjusted, by entering the rail of track to track device 11 and first
12 pair of second one steel rail of locating rack carries out the sub-adjusting of level orientation.
The top and bottom of 3 moving frame of flash welder 31 are separately installed with the clamping cylinder 40 and 41 of vertical direction, clamping cylinder
40th, 41 are connected with upper/lower electrode 42,43 respectively, and clamping cylinder 40,41 realizes second by making the up and down motion of moving electrode 42,43
The centering of rail and the first one steel rail vertical orientations.The right and left of moving frame 31 is separately installed with oil cylinder 44 and strut 45, by dynamic
The oil cylinder 44 for the level orientation that frame is left and right symmetrically arranged and strut 45 thereon can realize the second one steel rail and the first one steel rail
The centering of level orientation.
After centering is regulated, flash welder 3 is powered, and the moving frame 31 for clamping rail is gradually moved axially adjacent to towards quiet frame 32,
And gradually make moving frame end rail and quiet frame end rail mutually micro- pick-up current by and form flash of light, pass through flash of light and heat rail
End face heat penetration increases, and moving frame 31 is close progressively to be accelerated, and rail burns aggravation, is burnt latter stage in rail flash, and moving frame 31 is leaned on
Nearly speed is increased, and two one steel rail end contacts simultaneously extrude and form weld seam.After the displacement and pressure for reaching requirement, upset terminates.
Now the rail of welding fabrication is in moving frame end and quiet frame end still in clamped condition, and the start of upset oil cylinder 46 in moving frame 31 pushes away convex
Knife 47, which is axially moved, turns down the overlap at welding point position, completes whole rail flash welding overall process.
The flash welder that flat car opposite side is symmetrically installed can be while be done in the same fashion rail centering regulation.Steel
After the completion of rail centering, side welding machine can be started rail is welded, other side is complete after the completion of the rail welding of side
Rail in pairs is welded.
Two fixed flash welders being symmetrically installed can share a set of electric power system, hydraulic pressure and cooling system, power supply, liquid
Pressure and cooling system.The rail of left and right station track can be sent into simultaneously for the flash welder being symmetrically installed and centering is adjusted, and one
Side is welded in advance, and opposite side can start welding at once after the completion of welding, saves the engineering construction time.
The present invention can realize the strand road of railway two while change paving operation, and mechanization degree is high, and efficiency of construction is fast, paving
If can put old rail away while new rail, change after the completion of paving operation and deposit in curb without rail, will not be to both wired driving
Safety causes a hidden trouble.Improve the security runed during railway maintenance.
Finally it should be noted that above example is only to describe technical scheme rather than to this technology method
Limited, the present invention application can above extend to other modifications, change, using and embodiment, and it is taken as that institute
Have such modification, change, using, embodiment all in the range of the spirit or teaching of the present invention.
Claims (10)
1. a kind of fixed flash welder equipment of track flat car, including flat car (1) and flash welder (3), its feature exist
In flash welder (3) is two, and is symmetricly set in the middle part of flat car (1).
2. the fixed flash welder equipment of track flat car according to claim 1, it is characterised in that the flat car
(1) flash welder (3) side is set into track to track device (11) and rail locating rack (12) on, wherein, it is described enter track to track device
(11) and the first rail locating rack (12) is two, and it is symmetricly set on flat car (1)；Glistened on the flat car (1)
Welding machine (3) opposite side sets the second rail locating rack (14), hydraulic station (13), goes out track to track device (15) and decelerator (16), its
In, the rail locating rack (14), hydraulic station (13), to go out track to track device (15) and decelerator (16) be two, and is symmetrically set
It is placed on flat car (1).
3. the fixed flash welder equipment of track flat car according to claim 2, it is characterised in that the decelerator
(16) oil cylinder (17) and ratio wheel (18) are set.
4. the fixed flash welder equipment of track flat car according to claim 1 or 2, it is characterised in that the flash of light
Welding machine (3) bottom sets hydraulic motor (19), and slide rail (21) is set between rail locating rack (12) and flash welder (3), wherein,
Welding machine gear (20) is set on flash welder (3)；Rack (22) is set on slide rail (21), and the hydraulic motor (19) drives welding machine
Rack (22) engagement on gear (20) and slide rail (21).
5. the fixed flash welder equipment of track flat car according to claim 1, it is characterised in that the flash welder
(3) moving frame (31) and quiet frame (32) are set on.
6. the fixed flash welder equipment of track flat car according to claim 5, it is characterised in that the flash welder
(3) quiet frame rail clamping cylinder (33) the lower end connection transformer (34) of quiet frame (32) on, transformer (34) the lower end connection
Electrode (35), quiet frame (32) are while install the first quiet frame oil cylinder (36) and the second quiet frame oil cylinder (37) of horizontal direction, first is quiet
The first quiet frame strut (38) and the second quiet frame strut (39) are installed in frame oil cylinder (36) and the second quiet frame oil cylinder (37) front end, and first is quiet
The quiet frame strut (38) of frame oil cylinder (36) start first carries out the motion of horizontal direction, second the second quiet frame of quiet frame oil cylinder (37) start
Strut (39) carries out the motion of horizontal direction.
7. the fixed flash welder equipment of track flat car according to claim 5, it is characterised in that the flash welder
(3) moving frame (31) top and bottom on are separately installed with the first moving frame clamping cylinder (40) and the second moving frame folder of vertical direction
Locking oil cylinder (41), the first moving frame clamping cylinder (40) and the second moving frame clamping cylinder (41) respectively with Top electrode (42) and bottom electrode
(43) it is connected；Moving frame (31) the right and left is separately installed with moving frame oil cylinder (44) and moving frame strut (45).
8. the method for the fixed flash welder equipment of track flat car according to any one in claim 1-7, it is special
Levy and be,
First one steel rail (2) front end passes through the flat car (1) equipped with symmetrical flash welder (3), warp by right with certain speed to left
The regulation for carrying out horizontal direction to rail into track to track device (11) is crossed, subsequently into the first rail locating rack (12), the first rail
Locating rack (12) treats welding steel rail (2) and carries out Primary Location；
Rail (2) is by the moving frame (31) and quiet frame (32) of flash welder (3), into the second rail locating rack (14), rail (2)
Through the support of hydraulic station (13), and go out track to track device (15), gone forward side by side by going out track to track device (15) centering regulation rail (2)
Enter decelerator (16), treat that the first one steel rail (2) rear end enters the quiet frame (32) of flash welder (3), decelerator (16) passes through oil cylinder
(17) rail (2) speed is reduced to zero by start ratio wheel (18)；
By the clamping cylinder (33) and electrode (35) installed in quiet frame (32) upper end by the first one steel rail (2) front end vertical orientations
It is fixed；
First quiet frame oil cylinder (36) and the second quiet frame oil cylinder (37) are quiet by the first coupled quiet frame strut (38) and second
Frame strut (39) is fixed to the first one steel rail (2) front end level orientation；
Second one steel rail front end is positioned by entering the first rail after entering the regulation of track to track device (11) horizontal direction from right to left
Frame (12), the first rail locating rack (12) carries out primary contraposition to the second one steel rail front end and adjusted, and the second one steel rail front end enters
Flash welder (3) moving frame (31), in relaxed state.
9. the method for the fixed flash welder equipment of track flat car according to claim 8, it is characterised in that
The rack (22) on welding machine gear (20) and slide rail (21) is driven to engage by the hydraulic motor (19) of flash welder bottom,
Drive flash welder (3) to carry out flash welder (3) the primary of level orientation along slide rail (21) to adjust, by entering track to track device
(11) and the first rail locating rack (12) to the second one steel rail carry out level orientation sub-adjusting；
First moving frame clamping cylinder (40) and the second moving frame clamping cylinder (41), which move up and down, realizes the second one steel rail and first
The centering of rail vertical orientations；The oil cylinder (44) for the level orientation being left and right symmetrically arranged by moving frame and strut (45) thereon are real
The centering of existing second one steel rail and the first one steel rail level orientation；
After centering is regulated, flash welder (3) is powered, and the moving frame (31) for clamping rail is gradually leaned on towards quiet frame (32) axial movement
Closely, and gradually make moving frame end rail and quiet frame end rail mutually micro- pick-up current by and form flash of light, pass through flash of light and heating
Rail-end heat penetration increases, and moving frame (31) is close progressively to be accelerated, and rail burns aggravation, and latter stage is burnt in rail flash, moves
Frame (31) close to speed increase, two one steel rail end contacts and extrude form weld seam；
The rail of welding fabrication is pushed away in upset oil cylinder (46) start that moving frame end and quiet frame end are in clamped condition, moving frame (31)
Convex knife (47) is axially moved and turns down the overlap at welding point position, completes whole rail flash welding overall process.
10. the method for the fixed flash welder equipment of track flat car according to claim 8, it is characterised in that
The flash welder that flat car opposite side is symmetrically installed is while be done in the same fashion rail centering regulation, and rail centering is complete
Cheng Hou, can start side welding machine and rail is welded, other side has completed centering after the completion of the rail welding of side
Rail is welded；
Wherein, two fixed flash welders being symmetrically installed share a set of electric power system, hydraulic pressure and cooling system, power supply, liquid
Pressure and cooling system.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710464761.6A CN107116292B (en) | 2017-06-19 | 2017-06-19 | Fixed flash welding machine equipment of track flatbed |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710464761.6A CN107116292B (en) | 2017-06-19 | 2017-06-19 | Fixed flash welding machine equipment of track flatbed |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN107116292A true CN107116292A (en) | 2017-09-01 |
| CN107116292B CN107116292B (en) | 2022-11-29 |
Family
ID=59719087
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201710464761.6A Active CN107116292B (en) | 2017-06-19 | 2017-06-19 | Fixed flash welding machine equipment of track flatbed |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN107116292B (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111570988A (en) * | 2020-06-16 | 2020-08-25 | 中铁宝桥集团有限公司 | Tramcar turnout flash welding inverted welding device and method |
Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US3518398A (en) * | 1966-10-28 | 1970-06-30 | Schlatter Ag | Butt-welding device for billets |
| CN1876306A (en) * | 2006-07-18 | 2006-12-13 | 铁道科学研究院金属及化学研究所 | Flash welding machine for fixed steel rail |
| RU71581U1 (en) * | 2007-12-13 | 2008-03-20 | Владимир Иванович Дедюх | RADIATOR Fusion Butt Welding Machine |
| RU2007146001A (en) * | 2007-12-13 | 2009-06-20 | Владимир Иванович Дедюх (UA) | RADIATOR Fusion Butt Welding Machine |
| CN102049602A (en) * | 2010-12-03 | 2011-05-11 | 中国铁道科学研究院金属及化学研究所 | Steel rail flash welding machine and container type steel rail flash welding equipment |
| CN205576656U (en) * | 2016-03-15 | 2016-09-14 | 中交二公局铁路工程有限公司 | Rail that bridge floor railway was laid welds rail production line |
| CN207057819U (en) * | 2017-06-19 | 2018-03-02 | 中国铁道科学研究院金属及化学研究所 | A kind of fixed flash welder equipment of track flat car |
-
2017
- 2017-06-19 CN CN201710464761.6A patent/CN107116292B/en active Active
Patent Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US3518398A (en) * | 1966-10-28 | 1970-06-30 | Schlatter Ag | Butt-welding device for billets |
| CN1876306A (en) * | 2006-07-18 | 2006-12-13 | 铁道科学研究院金属及化学研究所 | Flash welding machine for fixed steel rail |
| RU71581U1 (en) * | 2007-12-13 | 2008-03-20 | Владимир Иванович Дедюх | RADIATOR Fusion Butt Welding Machine |
| RU2007146001A (en) * | 2007-12-13 | 2009-06-20 | Владимир Иванович Дедюх (UA) | RADIATOR Fusion Butt Welding Machine |
| CN102049602A (en) * | 2010-12-03 | 2011-05-11 | 中国铁道科学研究院金属及化学研究所 | Steel rail flash welding machine and container type steel rail flash welding equipment |
| CN205576656U (en) * | 2016-03-15 | 2016-09-14 | 中交二公局铁路工程有限公司 | Rail that bridge floor railway was laid welds rail production line |
| CN207057819U (en) * | 2017-06-19 | 2018-03-02 | 中国铁道科学研究院金属及化学研究所 | A kind of fixed flash welder equipment of track flat car |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111570988A (en) * | 2020-06-16 | 2020-08-25 | 中铁宝桥集团有限公司 | Tramcar turnout flash welding inverted welding device and method |
| CN111570988B (en) * | 2020-06-16 | 2023-12-05 | 中铁宝桥集团有限公司 | Tramcar turnout flash welding method |
Also Published As
| Publication number | Publication date |
|---|---|
| CN107116292B (en) | 2022-11-29 |
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