Machine for electric fusion butt welding of rails

专利摘要:
Mobile machine (1) for the electric flash-butt welding of the two ends in the course or in the joint region (44) of a row of longitudinally aligned, laid rails (5) of a railway track (7), comprising a driving motor (10) mounted on a bogie frame (2) of the machine (1) which is supported by running-gear units (8, 38), a hydraulic pump apparatus (11), a generator (12), a travelling gear (8) and welding-process control device (14) and an electric flash-butt welding apparatus (15) which can be adjusted transversely and vertically by means of drives (25, 23) for the purpose of working the left or right rail section. The two halves of said apparatus, which can be moved relative to one another in the rail longitudinal direction by means of hydraulic cylinders, each have a pair of clamping and welding jaws which can be driven electrically/hydraulically and are connected by means of hydraulic clamping cylinders. In the welding apparatus (15) is integrated a hydraulically driveable weld-upset shearing device. The flash-butt welding apparatus (15) is assigned a rail-drawing or -displacing device (16) which is provided in the rail horizontal plane (65) for the comprehensive arrangement of the welding apparatus (15) and has two rail clamping-jaw pairs (47, 48) which are provided for acting on the rail end region (42, 43) adjoining immediately in front of and behind the welding apparatus (15) and are interconnected with and can be driven by a hydraulic cylinder/piston arrangement (46) which runs in the longitudinal direction of the device (16). <IMAGE>
公开号:SU1607684A3
申请号:SU4613132
申请日:1988-12-28
公开日:1990-11-15
发明作者:Тойрер Йозеф；Оеллерер Фридрих；Рудольф Грубер Леопольд
申请人:Франц Плассер Банбаумашинен-Индустригезельшафт Мбх (Фирма)；
IPC主号:

专利说明:

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The device for moving the rails 16 is moved and positioned symmetrically over the ends of the rails 42,43 to be connected, placed on the path 7. If the distance is both large, more than 5 cm, then use the device for moving the rails 16 without turning on the welding unit 15 and attracting the right end of the rail 43. The welding unit 15 is inserted into the annular unified unit of the device for moving the rails 16 and lowered onto the ends of the rails 42,43. After pressing both pairs of compression and welding
The invention relates to welding, in particular to equipment for electric wire welding. Melting of rails. The aim of the invention is to improve the quality of the weld due to the precise joining of the welded rails,
FIG. 1 shows a machine for electric butt-welding of rail joints of a laid path by flashing with a device for butt-welding with a device for moving rails, side view; Fig. 2 shows a part of a machine with an apparatus for butt welding by melting and a device for moving the rails in the working position above two weldable pieces of rails of one rail thread, a horizontal projection; . FIG. 3 shows a part of a machine made in accordance with the invention (the position of the welding unit and the device for moving the rails corresponds to FIG. 2), side view; FIG. 4 shows a flash butt welding unit with a device for moving the rails in the working position, which is enveloped, with an enlarged detail side view; Fig. 5 shows an assembly for butt, flash welding and a device for moving rails according to Fig. 4, a horizontal projection; Fig. 6 shows the welding unit together with the device for moving the rails in the longitudinal direction along arrow A in Fig. 5; in Fig. 7 a device for moving the rails together with the welding unit covered in the working
boats on the rail neck through powered clamping cylinders, the moving process is performed by choice and jointly by the welding unit 15 and the device for moving the rails 16 or only by one welding unit 15. Upon reaching the distance between the two ends of the rails 42,43, automatically controlled welding process. The ends of the rails are heated to the melting point, and then with a precipitating blow they are pressed together with great force. The resulting sva-. Rusty naplsh cut off. The welding unit 15 is raised. 10 hp ff, 8 sludge,

position according to the invention, side view; Fig. 8 shows a device for rails and a welding unit according to Fig. 7 with an electro-hydraulic connection scheme for joint control of the longitudinal movement of the rails by means of both halves of the welding unit and the device for moving the rails, horizontal projection.
Machine 1 for electrical butt-. This fusion welding consists of the chassis 2 located along the frame and the cab 3, is supported through track carts 4 on a track 7 consisting of rails (respectively, of two rail threads 5 and sleepers 6) and is moved along it by means of the chassis 8. Near with cab 3 having a control device 9, there is a drive motor 10, which, through an appropriate gear, drives a hydraulic pump unit 11, as well as a generator 12. The generator 12 is electrically connected to the cabinet of the generator 13 and the device 14 process control weld-. The flash butt welding unit 15 and the rail moving device 16 are provided on the wheel set 17 of the trailer 18 of the machine 1, the welding unit 15 is located on the central frame of the machine 19 of the trailer 18, having a hinged support in the form of a bridge, and moves along longitudinal and transverse guides 20,
51
21 along and across with help of hydrogog drives 22,23. The hydraulic drive 23 provided for lateral movement is made in the form of a hydraulic motor with a gear that engages with the toothed rack 24, which is located perpendicular to the extended axle of the machine. A hydraulic cylinder 25 is provided for moving in height, which is connected to the welding unit 15 via a suspension device 26. For connecting the welding unit 15 to the frame of code part 2, when moving to a new position, two detachable u-locks are provided: - 1-st rail (dashed middle position). The welding unit 15 is connected to the welding process control device 14 and the hydraulic pumping unit 11 via supply lines 27 and hydraulic lines 28.


This 15 in the horizontal plane is a rail device. The device 16 for moving rails is 25 more than the cross section with ow in the area of the cab 29 of the trailer 18 is equipped with a width b and a length of 1 formed by the control device 30 with a distance meter one from another, the maximum distance (about 70 cm) of the drive 31, moving as a hydraulic razkladchik, telescoping half-bodies 51.52 of the welding aggregate -, -. In practice, another preferred embodiment of a drive 32, arranged as a cable cutter, is located on the machine width b of the welding unit pivotally around the transverse direction 5–5 in weight of about 2.5 tons in a horizontal 33 drive 34 and using an adjacent rail It is approximately a benefit 35 for a suspension that moves 92.5 cm, and a length of 1 is approximately 162.5 cm with a cross, length and height. For Inner side in the open B device is the best fixation of the device 16 for the peg pads 16 for moving the rails with the weight of the moving rails when moving to about 650 kg when pressed on,. The first position (the stroke average position of the rail of the clamping pads is nastily) is connected via removable loops of approximately 107 cm, and the inner replica rods 36.37 with a protruding 0-in clear light L is approximately 172.5 see the frame of the undercarriage talley, srotvetstst- As shown in fig.Z, trailer
with a frame 19 of the trailer 18. The trailer 18 is a traveling trolley 38, designed as a pair of wheels, equipped with a lowering-with-on. sleepers and / or ballast gears — 39 driven hydraulic lift stand 40 for rail unloading, and When: needs and sleepers. Between the two traveling carriages 4 of the chassis frame 2, at least one lifting column 41 is provided, which is supported on the sleepers 6. The device 16 for moving the rails is located above the rail joint, formed by having two rail ends 42.43 apart from each other, namely, a joint gap 44, rail fasteners 45 are provided for detachable fastening of rails 5 with sleepers 6.
18, the machine 1 is supported through the two lifting supports on the sleepers 6 and, through additional auxiliary lifting supports 53, on the ballast prism. Due to this, the cart 38 is lifted above the track 7 and the right rail with its end 43 is freed from the trailer Bes 18. In this way, the right end of the rail 43 after release from the corresponding skinny rail ss 45 can be moved without delay, pushing nag- . :: tilting the left end of the rail 42 dl. rail joint welding. In the case of inconvenience for moving the left j end of the rail 42 with the help of a lifting support post 41 lowered onto the sleepers 6, it is also possible to raise the adjacent support rail.
55
The device 16 for moving the rails in the working position comprises a unit for butt welding by flashing in the horizontal plane of the rails. The device 16 for moving the rails has two pairs of clamping pads 46.47 for gripping the rail ends 42.43 located directly in front of and behind the welding unit, interconnected and driven through a hydraulic piston-cylinder device 48. The hydraulic piston-cylinder device 48 is ring-shaped Unified unit 49 of device 16 for moving rails has two parallel driving cylinders 50.
The device 16 for moving (in particular for shrinking) the rails has an internal cross section of width (in light) B and length (in light) L, which are to cover the welding aggregate-.
g
18, the machine 1 is supported through the two lifting supports on the sleepers 6 and, through additional auxiliary lifting supports 53, on the ballast prism. Due to this, the cart 38 is lifted above the track 7 and the right rail with its end 43 is freed from the trailer bes. 18. Thus, the right end of the rail 43, after being released from the corresponding skinny rail-sow fasteners 45, can be moved without delay, pushing nag- . :: tilting the left end of the rail 42 dl. rail joint welding. In the case of inconvenience for moving the left j end of the rail 42 with the help of a lifting support post 41 lowered onto the sleepers 6, it is also possible to raise the adjacent support rail.
five
welding unit 15 traveling carriage 4 MISHIN 1.
The device 16 for moving the rails in the longitudinal direction consists of electrically insulated and arranged one after the other symmetrically with respect to the longitudinal P. LINE symmetry of the device 16, parts of 5.55, which is 5 m and, taking into account the stroke length of the driving cylinders 50, can increase (preferably) 30 cm. A distance of about 1.5 m with piston rods 57 about half-rotated creates the possibility of unhindered non-contact switching of the aggregate 15 for butt welding.
The rye is connected by means of an electrode through which the distance between the space-insulating gasket 56 is provided with help in parallel with the bolt joint axle 68. The electrically insulating (slide) with the gasket 56 pressed on the shcha 56 is mounted on the clamping block 46 and the piston rod 57 of the drive cylinder 50 and is located perpendicular to the longitudinal axis of the pulling member 58 in the direction of compression and displacement. Both pairs of clamping blocks 46, 47 are mirrored one to the other, driven by cylinders 50 and piston rods 57 i. made in the form of a cranked device clamping levers 59. The latter consists of 46.47 clamping levers connected to the clamping pads, which are connected in the location area of a pair of clamping pads 46.47 through spacer bolts 60 to the connecting element 61. , 47 corresponds to approximately 1.4 m, | s Both drive cylinders are made with connections 69.70 for hydraulic actuation through flexible hydraulic oil lines 71, 72, which lead to the pumping unit of the machine 1.
Each half of the 51.52 welding unit is fitted with a pair of clamping and welding blocks 73.74, which are pressed to the rail neck through a hydraulic clamping cylinder 75. For pro-. Two hydraulic cylinders 76, located in the longitudinal direction of the rails, are provided towards each other in the longitudinal movement of both halves 51, 52 of the welding unit. Along with the longitudinal movement of both halves 51.52 of the welding unit (or one half to the other), the longitudinal movement of the clamping and welding pairs is also performed.
20
25
thirty
40
The ends of the clamping levers 62 opposite to each other, 62 pairs of clamping pads 46,47 in the right part 55 through the spacer bolt 63 are connected to the drive cylinder 50, and in the left part 54 through ..
Parental bolt 64 - with traction element 35 blocks 73,74 (or one pair to another. 58. clamping levers 62 through the coupling), together with clamped ends of the reel, the pore bolt 60 and element 61 are connected pivotally, and between the lower the connecting element 61 and the corresponding: with the clamping lever 62 is provided a fixing ring welded (preferably) with the lower connecting element 61.
Each of the rails 65 spaced perpendicularly to the horizontal plane 65 of the spacer bolts 60, 63, 64 is connected in the zone of the upper end with the plate 66, and in the zone of the lower end with removable cotter pin 67 Both located to the left and right of the rail of the hydraulic drive cylinder 50 hydraulic piston-cylinder device 48 are designed to jointly create a traction (shifting) force of more than 120 tons. The distance between the spacing 1:, 1 bolts 63.64 in the longitudinal direction of the axle 68 of compression (shifting) is now measure is approximately.
owls 42.43. A control device 77 attached to the welding unit 15 is provided for servicing the welding unit 15 and the device 16 for sliding the rails. A half 51 of the welding unit connected to the hydrocylin / lrom 76 51 is equipped with a hydraulic shearing device 78 for removing the welding welds formed after welding.
An element 61 is provided for transmitting very large forces above and below the rail 5, which connects opposite clamping legs 62c in transverse direction. The pair of rail clamp covers 46, 47 are welded to the lower sides of the clamping lever 62 (respectively, are filled with it from one piece ). Between the two clamping pads 46,47 and the rail neck are provided for better clamping fit and / and insulation. Transmission of compressive forces on a pair of rail clamping and welder50
1.5 m and taking into account the stroke length of the drive cylinders 50 can be increased (preferably) by 30 cm. A distance of about 1.5 m with piston rods 57 about half-way out creates the possibility of uninterrupted non-contact switching of the unit 15 for butt welding,
moreover, the distance between axes 68 of shaking (shifting) parallel to each other when pressed on
The neck rails of the pairs of clamping blocks 46.47 correspond to approximately 1.4 m. Both drive cylinders are made with connections 69.70 for hydraulic actuation through flexible hydraulic oil lines 71, 72 that lead to the pumping unit of the machine 1.
Each half of the 51.52 welding unit is fitted with a pair of clamping and welding blocks 73.74, which are pressed to the rail neck through a hydraulic clamping cylinder 75. For pro-. Two hydraulic cylinders 76, located in the longitudinal direction of the rails, are provided towards each other in the longitudinal movement of both halves 51, 52 of the welding unit. Along with the longitudinal movement of both halves 51.52 of the welding unit (or one half to the other), the longitudinal movement of the clamping and welding pairs is also performed.
..
73.74 pads (or one pair to each other) together with clamped ends
0
5 pads 73,74 (or one pair to each other) together with clamped ends of the relay
owls 42.43. A control device 77 attached to the welding unit 15 is provided for servicing the welding unit 15 and the device 16 for shifting the rails. A half 51 of the welding unit connected to hydrocylin / lrom 76 is equipped with a hydraulic shearing device 78 for removing 5 welding weld bars formed after welding.
Element 61 is provided for transmitting very large forces above and below the rail connecting transversely opposite clamping lugs 62c. A pair of rail clamping pads 46, 47 are welded to the underside of the clamping lever 62 (respectively, made from one piece). Between the two clamping pads 46, 47 and the rail neck are provided pads for better clamp fit and / or insulation. The transfer of compressive forces on a pair of rail clamping and welding:
0
73.74 through the vertically clamping cylinders 75 through the lever system in the welding unit 15 (not shown in detail),
Welding current through the wiring
79 is transferred to the ends of the rails 42,43. Hydraulic oil pipelines 71.72,
employees for actuation. both of the drive cylinders 50 and both of the hydraulic cylinders 76 are connected to a four-way three-position valve.
80 hydraulic control unit 81. From the valve valve 80 is laid hydraulic oil pipe 82 with reverse. W) 1M valve to the hydraulic valve 83 is proportional to the adjustment o
 The control unit 81 has a four-way two-way valve 84, branch 85, hydraulic oil line 86, which connects the inlet 82 and outlet 83 oil lines of the current regulating valve 83 to each other. The oil pipe 86 also has a two-stage control valve 87, which through hydraulic PI. The thawing oil line 88 (respectively, 28) is connected to the hydraulic pump unit 11. All of the valves in the control unit (80, 83, 84, 87) are controlled through the wiring 89 of the control device 77 located at the welding unit 15. It is connected to hydraulic oil line 90 for loading both clamping cylinders 75.
The machine works as follows. As soon as the machine, after moving, reaches the rail joint 44, which is to be welded, the fixing device 16 is removed for shifting the rails of the rod 36, 37, as well as holding the rail welding unit 15. The actuator 32, made in the form of a cable pull, is actuated by the device 16 for moving the rails together with the drives 31 and 34 across the machine until the device 16 is positioned symmetrically over the ends of the rails 42, 43 to be connected, In a suspended position after preliminary removal of the corresponding cotter pins 67, both lower connecting elements 61 are removed, then the device 16
for shifting the rails, turning on the actuator 34, is placed on track 7 (respectively, on the rail 5), with the outer spacer bolts 60 being placed in
,
P
five
20 25 0 -zs
Q
..
five
corresponding to the sleeper box. Then both removed connecting elements 61 between the sleepers 6 are guided under the rail 5 and pulled over the spacer bolts 60 again. Rail fasteners 45 of the right unloaded rail 5 are advantageously loosened during welding of the rail thread. If the distance between both ends of the rails 42.43 is very large, for example more than 5 cm, the device 16 is previously used for shifting the rails without switching on the welding unit 15 for tightening (respectively, shifting) the unloaded end of the rail 43 of the rail thread. For this purpose, the driving cylinders 50 are actuated so that the piston rods 57 are pushed as far forward as possible. In this case, the distance between the two pairs of clamping blocks 46.47 becomes the greatest. Both cylinders 50 are then actuated in the opposite direction, whereby the compressive levers 62 for pressing the pairs of rail clamping blocks 46.47 onto the rail journals are turned in the direction of the rail 5. After the turning movement is completed by further inserting the piston rods 57 into the drive cylinders 50 the right end of the rail 43 is attracted, as by lowering the lift stand 40, it is released from the track car 38 and the weight of the trailer 18, if the distance between the two ends of the rail (rail joint 44) is the process of pulling the rail is still too great, the process can be believed: as far as possible both pairs of clamping pads 46, 47 are stretching one against the other, by pulling the piston rods 57 out of the water cylinders 50, perform a new pull process (respectively , shifting) rails in the direction shown by the arrows 91,
You can also move, for example, the left end of the rail 42 along the arrow 92o. To do this, lower the lifting column 41 onto the sleepers and raise the track carriage 4 (relative to the path 7). The corresponding lean rail fasteners 45 of the left rail thread should be shifted. ed these released. Also, both ends of the rails 42,43 move towards each other when they are unloaded from the track carriage.
During the attraction of the rail line, the welding unit 15 with lead. Drives 22 and 23 are activated. an annular unified unit 49 of the device 16 for shifting the rails and lowered onto the ends of the rails, 43. After pressing both pairs of compression and welding 73.74 onto the rail neck, the clamping cylinders 75 are activated — the process of moving the welding unit 15 and the device 16 for shifting the rails or (optionally) only by one welding unit 15. For joint operation (2-way transmission and driving forces, both hydraulic chucks 76 of the welding unit and driving cylinders 50 of the device 16 are simultaneously driven rail over the common hydraulic oil line 70.71. The reciprocating movement is carried out in accordance with a given speed by the current control hydraulic valve 83. In this case, the electric analog signal generates a small flow corresponding to this signal (respectively, the amount of oil). hydraulic cylinders 76.50 are proportional to the volume of oil flow. If excessive forces are required when attracting very long rail threads, for example, several can be connected, - drive cylinders 50 parallel to the hydraulic cylinders 76 of the welding unit 15, and the thrust force is transmitted to the rails via an additional pair of rail clamping pads 46.47, Closed adjacent to the neck of the rail rail pair clamping pads 46.47 and a pair of clamping and welding pads 735 74 they form with compact hydraulic cylinders 50,76 a closed compact unit. At the same time, the different pistons of the cylinders move at the same speed, therefore it is sufficient to create the necessary total oil consumption through the control valve 83. Working area piston
cylinders .COORDING and effort from
piece cylinders 50576.
As soon as the distance between the two ends of the rails 42.43, which is necessary for welding, is reached, an automatically controlled welding process begins. At the same time, on a precisely controlled program (depending on the amount of current flowing), the ends of the rails 42, 43 slightly move
2 Q 25 DZ, 40 45
one relative to the other until warmed to melting point. At the end of the welding process, both ends of the rails (in the framework of the so-called slump / pressure stroke) are pressed together with great effort by connecting a control valve 87 with a high oil flow capacity. The welding weld that is formed at this time is cut off automatically by a cutter for welding directly after welding. After that, the welding unit 15 is lifted, the actuator 25 is actuated. Then the lower connecting elements 60.61 of the device 16 are removed to move the rails and, when the studs 66 are attached, the spacer bolts 63.64 lift the device 16 by means of; suspension attachments 35. Then, the lower connecting members 61 are again connected to the expansion bolts 60, and the machine 1, after raising the uprights 40, moves to the next rail track.
joint 44.

权利要求:
Claims (1)
[1]
The use of a device for moving rails will allow for accurate docking of rails and thereby improve the quality of welding. Invention Formula
1. An electric butt welding machine for flashing rails arranged in a row, containing track carts, a chassis frame mounted on them, equipped with a drive motor, a hydraulic pump unit, a generator, a running gear, a welding process control unit with a control unit, a cutter hydraulically driven welding naples, racks for lifting the frame with carts relative to the rails, a device for moving the rails and a butt welding machine It is made in the form of two halves installed with the possibility of moving in the longitudinal direction relative to each other by hydraulic cylinders and equipped with pairs of clamping and welding blocks, which, with the aim of improving the quality of the weld due to the precise joining of the weld rails 5, the device for moving the rails made in the form of two clamping units electrically isolated from each other, located
symmetrically relative to the transverse axis of the machine and equipped with displacement mechanisms located symmetrically relative to the longitudinal axis of the machine, the flash butt welding unit is installed with the possibility of insertion between the clamping nodes and between the mechanisms of their movement
2, Machine pop 1, characterized in that the mechanism for moving the units of the device for moving the rails is made in the form of a hydraulic cylinder-piston device with two driving cylinders.
3, machine popp. 1 and 2, differing in that the clamping units of the rail moving device are in the form of levers, hingedly connected and driving cylinders for both pairs of clamping devices of the rail moving device are connected to the hydraulic pump unit of the machine,
8. Machine according to claims 1-3, characterized in that the connection of the hydraulic cylinders of the butt welding machine and the driving cylinders of the rail transporting device with the hydraulic pumping unit is made in the form of flexible hydraulic oil lines.
15 9. The machine according to claims 1 and 2, about the fact that the unit for butt welding and the device for moving the rails are connected to the control device with the possibility of synchronized with the driving cylinders and the movement of clamping and welding
naschenny clamping pads.
4. The machine according to claims 1-3, characterized in that in the device for moving the rails the two clamping units 25 are insulated with insulating spacers.
5. The machine according to claims 1-4, characterized in that the insulating gaskets are perpendicular
axle of the power cylinders of the hydraulic device of the cylinder-piston device.
6. The machine according to claims 1-5, characterized in that on the chassis of the chassis mechanism installed device
pads of the butt fusion machine and both pairs of clamping pads of the device for moving the rails.
10. Machine on PP. 1.2 and 9.0 t of l and so that the driving cylinders of the device for moving rails and the hydraulic cylinders of the butt-welding unit are connected in parallel to the control unit of the control unit, while a four-way three-way valve is mounted in the control unit, a hydraulic current control valve, a four-way two-way valve connected to it, a valve for displacing in three mutually perpendicular pressure, and the four-way directions of the device n
with hydraulic oil line.
11. The machine according to claim 1, about t l and h a yu and so that the chassis frame is provided with an additional. . lifting stand.
to move the rails and made in the form of a system of hydraulic drives.
7. Machine according to claims 1 and 2, about t l and - dd that the hydraulic cylinders of the unit for butt welding
I
J + PP-4
.. LT - TC F
  frill-
.- DG: F {: ±
T
X-, CT -s3nii
barking and driving cylinders for both pairs of clamping pads of the rail moving device are connected to the hydraulic pumping unit of the machine,
8. Machine according to claims 1-3, characterized in that the connection of the hydraulic cylinders of the butt-welding unit and the driving cylinders of the rail-driving device with the hydraulic pumping unit is made in the form of flexible hydraulic oil lines.
9. Machine according to claims 1 and 2, about the fact that the unit for butt welding and the device for moving the rails are connected to the control device with the possibility of synchronous movement of clamping and welding
pads of the butt fusion machine and both pairs of clamping pads of the device for moving the rails.
10. Machine on PP. 1.2 and 9.0 t of l and so that the driving cylinders of the device for moving rails and the hydraulic cylinders of the butt-welding unit are connected in parallel to the control unit of the control unit, while a four-way three-way valve is mounted in the control unit, hydraulic current control valve, four-way, two-way valve connected to it, reFig valve. 2
22
.dax jlx /
, D5
-
1 N
5G.4g- ± a
57
FIG. four
19 Yu
, D5
fej
TO
7ffG 1-.
Z5
52
| .f- L
6S 50 70 48
FIG. five
FIG. 6
51
P t3 /; / T
Editor A.Makovska Tehred l.Serdyukova
Order 3556Discount 647Subscription
VNIIPI State Committee on Inventions and Discoveries at the State Committee on Science and Technology of the USSR, 113035, Moscow, Zh-35, 4/5 Raushsk Nab.
15
61
88
Fig.c
Proofreader S.Shevkun

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引用文献:

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公开号 | 申请日 | 公开日 | 申请人 | 专利标题

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RU2503526C2|2009-04-16|2014-01-10|Давиде ВАЙЯ|Rail welding head|AU517045B2|1977-07-08|1981-07-02|C. Delachaux SA|Aligning and setting gap between rails|

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CH654363A5|1983-07-05|1986-02-14|Rail Wel Inc|MACHINE FOR CORRECT POSITIONING AND BUTTON WELDING OF TWO END OF RAILS.|AT394960B|1990-06-15|1992-08-10|Plasser Bahnbaumasch Franz|MOBILE TORCH WELDING UNIT|

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DE59304608D1|1992-11-09|1997-01-09|Schlatter Ag|Flash butt welding machine|

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AT406969B|1996-01-18|2000-11-27|Plasser Bahnbaumasch Franz|MACHINE FOR CARRYING OUT RAIL WELDING|

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CN102296500B|2011-06-10|2013-10-02|北京环铁联合噪声控制科技有限公司|Arrangement fixture of track absorber|

法律状态:
2010-12-27| REG| Reference to a code of a succession state|Ref country code: RU Ref legal event code: MM4A Effective date: 20071229 |

优先权:

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申请号 | 申请日 | 专利标题

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EP19880890021|EP0326793B1|1988-02-01|1988-02-01|Apparatus for the electric butt-welding of the two reciprocally contacting ends in the gap region of a laid railway track|

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