DE4440456C1 - Flash butt welding of permanent way rails - Google Patents

Flash butt welding of permanent way rails

Info

Publication number
DE4440456C1
DE4440456C1 DE4440456A DE4440456A DE4440456C1 DE 4440456 C1 DE4440456 C1 DE 4440456C1 DE 4440456 A DE4440456 A DE 4440456A DE 4440456 A DE4440456 A DE 4440456A DE 4440456 C1 DE4440456 C1 DE 4440456C1
Authority
DE
Germany
Prior art keywords
force
welding
rail
rails
measured
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.)
Expired - Fee Related
Application number
DE4440456A
Other languages
German (de)
Inventor
Manfred Papendick
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Stahlberg Roensch & Co KG GmbH
Original Assignee
Stahlberg Roensch & Co KG GmbH
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed by Stahlberg Roensch & Co KG GmbH filed Critical Stahlberg Roensch & Co KG GmbH
Priority to DE4440456A priority Critical patent/DE4440456C1/en
Application granted granted Critical
Publication of DE4440456C1 publication Critical patent/DE4440456C1/en
Anticipated expiration legal-status Critical
Expired - Fee Related legal-status Critical Current

Links

Classifications

    • BPERFORMING OPERATIONS; TRANSPORTING
    • B23MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
    • B23KSOLDERING OR UNSOLDERING; WELDING; CLADDING OR PLATING BY SOLDERING OR WELDING; CUTTING BY APPLYING HEAT LOCALLY, e.g. FLAME CUTTING; WORKING BY LASER BEAM
    • B23K11/00Resistance welding; Severing by resistance heating
    • B23K11/04Flash butt welding
    • EFIXED CONSTRUCTIONS
    • E01CONSTRUCTION OF ROADS, RAILWAYS, OR BRIDGES
    • E01BPERMANENT WAY; PERMANENT-WAY TOOLS; MACHINES FOR MAKING RAILWAYS OF ALL KINDS
    • E01B11/00Rail joints
    • E01B11/44Non-dismountable rail joints; Welded joints
    • E01B11/50Joints made by electric welding
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B23MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
    • B23KSOLDERING OR UNSOLDERING; WELDING; CLADDING OR PLATING BY SOLDERING OR WELDING; CUTTING BY APPLYING HEAT LOCALLY, e.g. FLAME CUTTING; WORKING BY LASER BEAM
    • B23K2101/00Articles made by soldering, welding or cutting
    • B23K2101/26Railway- or like rails

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Architecture (AREA)
  • Civil Engineering (AREA)
  • Structural Engineering (AREA)
  • Machines For Laying And Maintaining Railways (AREA)

Abstract

For flash butt welding of rails, in a permanent way, the draw presence required to draw the laid rail against the end of the previously-welded rail section is measured, and combined with the butting force. If the draw force exceeds a given value, the welding is interrupted and, if lower than a given value, the measured draw force is added to a preset butting force.

Description

Die Erfindung betrifft ein Verfahren gemäß Oberbegriff des Pa­ tentanspruchs 1.The invention relates to a method according to the preamble of Pa claim 1.

Aus der DE 37 06 316 ist ein Verfahren zum Abbrennstumpfschwei­ ßen von stumpf miteinander zu verbindenden Schienen bekannt, bei dem das jeweils anzuschweißende Schienenstück auf Rollen zuge­ führt wird, so daß keine wesentliche Zugkraft beim Annähern an den Schweißkopf zu überwinden ist. Auf diese Weise wird die für das Schweißen erforderliche Stauchkraft, die in der Regel bei 40 t bis 50 t liegt, durch die für das Heranziehen der Schiene erforderliche Zugkraft nicht wesentlich verringert.DE 37 06 316 describes a method for flash butt welding known from butt-jointed rails known which the rail piece to be welded on rolls leads, so that no significant traction when approaching the welding head has to be overcome. In this way, the for the welding required compressive force, which is usually at 40 t to 50 t is due to the use of the rail required traction is not significantly reduced.

Wenn Schienen jedoch nicht im Werk, sondern vor Ort im Gleis geschweißt werden sollen, dann sind wesentlich höhere Zugkräfte zum Heranführen der ausgelegten Schiene an den bereits ver­ schweißten Schienenstrang erforderlich, da das anzuschweißende Schienenstück nicht auf Rollen liegt, sondern in den Schienen­ lagern, also beispielsweise auf den Betonschwellen oder in den Rippenunterlagsplatten. Es müssen dann erhebliche Reibungskräfte überwunden werden, um ein derartiges Schienenstück während des Schweißprozesses zu ziehen. Diese Zugkräfte können mehr als 10 t ausmachen, insbesondere dann, wenn das Schienenstück verhältnis­ mäßig lang ist (etwa 120 m) und außerdem noch in einem Bogen liegt. Bei einer voreingestellten Stauchkraft von 40 t und einer aufzubringenden Zugkraft von beispielsweise 12 t würde sich die für das Schweißen zur Verfügung stehende Kraft demzufolge auf 28 t reduzieren, was für den Stauchvorgang beim Abbrenn­ stumpfschweißen zu wenig wäre.However, when rails are not in the factory, but on site in the track should be welded, then there are much higher tensile forces to bring the designed rail to the ver welded rail track required because the welded Rail piece is not on rollers, but in the rails store, for example on the concrete sleepers or in the Ribbed underlays. Then there must be considerable frictional forces be overcome to such a rail piece during the Welding process. These tensile forces can exceed 10 t make up, especially if the rail section is in proportion  is moderately long (about 120 m) and also in an arc lies. With a preset compression force of 40 t and one traction force of, for example, 12 t would be the available force for welding accordingly Reduce 28 t, what for the compression process when burning butt welding would be too little.

Es ist daher Aufgabe der Erfindung, die beim Stand der Technik auftretenden Nachteile zu vermeiden und ein verbessertes Ver­ fahren zum Abbrennstumpfschweißen im Gleis zu schaffen.It is therefore an object of the invention in the prior art to avoid disadvantages and an improved Ver drive to create flash butt welding in the track.

Zur Lösung dieser Aufgabe dienen die Merkmale des Patentan­ spruchs 1.The features of the patent serve to solve this problem saying 1.

Durch das Messen der für das Heranführen eines Schienenstücks aufzuwendenden Zugkraft läßt sich feststellen, ob nach der Her­ anführung der Schiene noch genügend Stauchkraft für die Schwei­ ßung zur Verfügung steht. Überschreitet die Zugkraft für das Heranführen des Schienenstücks einen vorgegebenen Wert, so wird die Schweißung unterbrochen. Bleibt die Zugkraft jedoch unter dem voreingestellten Wert, so wird die gemessene Zugkraft zu der voreingestellten Stauchkraft addiert und die Schweißmaschine kann stets mit konstanter Schweißkraft arbeiten.By measuring the for moving a piece of rail tractive effort can be determined whether after the Her the rail still has sufficient compressive strength for the weld ß is available. Exceeds the traction for that Approaching the rail section a predetermined value, so the weld was interrupted. However, the tractive force remains below the preset value, the measured tractive force becomes the preset upsetting force is added and the welding machine can always work with constant welding power.

Es sei beispielsweise angenommen, die zum Schweißen erforderli­ che Stauchkraft solle 40 t betragen. Wird nun beim Heranziehen der Schiene festgestellt, daß hierfür eine Zugkraft von 8 t er­ forderlich ist, so erhöht die Schweißmaschine die Stauchkraft auf 48 t, um neben der Kraft für das Heranführen der Schiene noch weitere 40 t für das Stauchen beim Abbrennstumpfschweißen zur Verfügung zu haben.For example, assume that the welding is required che compressive force should be 40 t. Will now when pulling up the rail found that for this a tensile force of 8 t is required, the welding machine increases the compressive force to 48 t, in addition to the power required to move the rail another 40 t for upsetting during flash butt welding To have available.

Die Messung der Zugkraft erfolgt auf an sich bekannte Weise, z. B. durch Ermittlung des Drucks an einer Hydraulikanlage. Der gemes­ sene Hydraulikdruck wird als elektrisches Signal an die Steue­ rung der Schweißmaschine geliefert und in deren Steuerung so umgewandelt, daß aus den gemessenen bzw. zum Stauchen erforder­ lichen Hydraulikdrücken die entsprechenden Kräfte bzw. Kraftsi­ gnale ermittelt werden.The tensile force is measured in a manner known per se, e.g. B. by determining the pressure on a hydraulic system. The measured This hydraulic pressure is sent to the control as an electrical signal tion of the welding machine and its controls  converted that required from the measured or for upsetting Lichen hydraulic pressures the corresponding forces or Kraftsi gnale be determined.

Claims (3)

1. Verfahren zum Abbrennstumpfschweißen von Schienen im Gleis, bei dem die Schienen gegeneinander gezogen und mit einem Schweißstrom versehen werden, so daß zwischen den angenäher­ ten Schienenenden ein Lichtbogen entsteht, der sie zum Schmelzen bringt, worauf die erweichten Schienenenden mit einer vorgegebenen Stauchkraft gegeneinander gedrückt wer­ den, dadurch gekennzeichnet, daß die zum Ziehen der im Gleis verlegten Schiene gegen das Ende des bereits verschweißten Schienenstrangs erforderliche Zugkraft gemessen und mit der Stauchkraft kombiniert wird.1. Method for flash butt welding of rails in the track, in which the rails are drawn against one another and provided with a welding current, so that an arc arises between the approximate rail ends, which causes them to melt, whereupon the softened rail ends are pressed against one another with a predetermined compressive force who the, characterized in that the pulling force required to pull the rail laid in the track against the end of the already welded rail track is measured and combined with the compression force. 2. Verfahren nach Anspruch 1, dadurch gekennzeichnet, daß bei einer Zugkraft, deren gemessener Wert höher als ein vorgege­ bener Wert ist, die Schweißung unterbrochen wird.2. The method according to claim 1, characterized in that at a pulling force whose measured value is higher than a given one is the value, the welding is interrupted. 3. Verfahren nach Anspruch 1, dadurch gekennzeichnet, daß bei einer kleineren Zugkraft als ein vorgegebener Wert die ge­ messene Zugkraft zu der voreingestellten Stauchkraft addiert wird.3. The method according to claim 1, characterized in that at a lower tensile force than a predetermined value measured tensile force added to the preset compressive force becomes.
DE4440456A 1994-11-02 1994-11-02 Flash butt welding of permanent way rails Expired - Fee Related DE4440456C1 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
DE4440456A DE4440456C1 (en) 1994-11-02 1994-11-02 Flash butt welding of permanent way rails

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DE4440456A DE4440456C1 (en) 1994-11-02 1994-11-02 Flash butt welding of permanent way rails

Publications (1)

Publication Number Publication Date
DE4440456C1 true DE4440456C1 (en) 1995-12-07

Family

ID=6533153

Family Applications (1)

Application Number Title Priority Date Filing Date
DE4440456A Expired - Fee Related DE4440456C1 (en) 1994-11-02 1994-11-02 Flash butt welding of permanent way rails

Country Status (1)

Country Link
DE (1) DE4440456C1 (en)

Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE3706316C2 (en) * 1987-02-27 1994-07-21 Stahlberg Roensch Gmbh & Co Kg Process for flash butt welding of parts to be butted together

Patent Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE3706316C2 (en) * 1987-02-27 1994-07-21 Stahlberg Roensch Gmbh & Co Kg Process for flash butt welding of parts to be butted together

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Legal Events

Date Code Title Description
8100 Publication of the examined application without publication of unexamined application
D1 Grant (no unexamined application published) patent law 81
8363 Opposition against the patent
8339 Ceased/non-payment of the annual fee