CH243985A - Electrical device for heating rail heads, rail webs and other track parts. - Google Patents
Electrical device for heating rail heads, rail webs and other track parts.Info
- Publication number
- CH243985A CH243985A CH243985DA CH243985A CH 243985 A CH243985 A CH 243985A CH 243985D A CH243985D A CH 243985DA CH 243985 A CH243985 A CH 243985A
- Authority
- CH
- Switzerland
- Prior art keywords
- rail
- radiator
- heated
- heating
- heater
- Prior art date
Links
- 238000010438 heat treatment Methods 0.000 title claims description 12
- 239000002184 metal Substances 0.000 claims description 5
- 230000005855 radiation Effects 0.000 claims description 3
- 239000011449 brick Substances 0.000 claims description 2
- 238000001816 cooling Methods 0.000 claims description 2
- 239000000463 material Substances 0.000 claims 3
- 230000001419 dependent effect Effects 0.000 claims 1
- 238000003466 welding Methods 0.000 description 7
- 238000010276 construction Methods 0.000 description 1
- 230000005611 electricity Effects 0.000 description 1
- 238000003303 reheating Methods 0.000 description 1
- 239000004575 stone Substances 0.000 description 1
Classifications
-
- E—FIXED CONSTRUCTIONS
- E01—CONSTRUCTION OF ROADS, RAILWAYS, OR BRIDGES
- E01B—PERMANENT WAY; PERMANENT-WAY TOOLS; MACHINES FOR MAKING RAILWAYS OF ALL KINDS
- E01B31/00—Working rails, sleepers, baseplates, or the like, in or on the line; Machines, tools, or auxiliary devices specially designed therefor
- E01B31/02—Working rail or other metal track components on the spot
- E01B31/18—Reconditioning or repairing worn or damaged parts on the spot, e.g. applying inlays, building-up rails by welding; Heating or cooling of parts on the spot, e.g. for reducing joint gaps, for hardening rails
-
- 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
- B23K11/002—Resistance welding; Severing by resistance heating specially adapted for particular articles or work
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Architecture (AREA)
- Civil Engineering (AREA)
- Structural Engineering (AREA)
- Machines For Laying And Maintaining Railways (AREA)
Description
Elektrische Einrichtung zum Anwärmen von Schienenköpfen, Schienenstegen und sonstigen Geleiseteilen. Im Geleisebau spielt bekanntlich das Schweissen von Schienenstössen und das Auf tragschweissen abgenützter Schienenkopfteile eine wichtige Rolle. Diese Schweissarbeiten werden heute fast ausnahmslos mittels elek trischer Schweissapparate durchgeführt. Teil weise zur Ermöglichung dieser Schweiss arbeiten, insbesondere aber zur Erhöhung der Qualität des Schweissens, werden die zu schweissenden Schienenteile vorgewärmt und zum Teil sogar nach durchgeführter Schwei ssung nachgewärmt. Bis jetzt wurde diese Vor- bezw. Nachwärmung meistens mittels eines Benzin- oder Ölbrenners bewerkstelligt.
Versuche mit elektrischen Anwärmegeräten haben aber gezeigt, dass, wenn diese eine geeignete Konstruktion aufweisen, eine viel gleichmässigere Erwärmung erzielt werden kann, als dies mit den bisherigen nichtelek trischen Anwärmern der Fall ist, wodurch die Qualität der Schweissung sichtbar ge hoben werden kann.
Gegenstand der Erfindung ist nunmehr eine elektrische Einrichtung zum Anwärmen von Schienenköpfen, Schienenstegen und son stigen Geleiseteilen, die erfindungsgemäss einen freistrahlenden elektrischen Heizkörper be sitzt, dessen Formgebung der Oberflächen- form des anzuwärmenden Schienenteils der art angepasst ist, dass beim Anwärmen der Strahlungsabstand zwischen Heizkörper und Wärmegut praktisch überall gleich gross ist.
An Hand der Zeichnung sind zwei Aus führungsbeispiele der Erfindung näher erläu tert, und zwar zeigt Fig. 1 einen Schienen stegwärmer und Fig. 2 einen Schienenkopf wärmer im Querschnitt, wobei die Heizkörper form dem bestimmten Verwendungszweck entsprechend angepasst ist.
In beiden Figuren bedeutet 1 der frei strahlende Heizkörper des Anwärmers, der als mäanderförmiger Bandheizkörper ausge bildet ist und in einem wärmeisolierenden, feuerfesten Stein 2 gehaltert ist. Dieser Stein 2, der bewirkt, dass die im Heizkörper 1 erzeugte Wärme auf das aufzuwärmende Schienen stück reflektiert und ein übermässiger Strah lungsverlust verhindert wird, ist von einem mit Traggriffen 4 versehenen Metallgehäuse 3 umfasst. Um zu verhindern, dass der Heiz körper 1 beim Anwärmen der Schiene 5 mit dieser in Berührung kommt, sind am Metall gehäuse 3 Vorsprünge 6 vorgesehen, die ge statten, den Wärmer so nahe als möglich an die Schiene heranzuschieben.
Der Anwärmer wird zweckmässigerweise vom Netz aus über einen Transformator mit Strom beliefert, wobei die Transformator spannung so niedrig gewählt wird, dass bei zufälliger Berührung des Apparates keine Gefahr für das Dienstpersonal entstehen kann. Um eine unzulässige Erwärmung der Klem menanschlüsse des Anwärmers zu verhindern, werden mit Vorteil in unmittelbarer Nähe derselben ausserhalb des Metallgehäuses Kühl fahnen auf den Zu- und Ableitungen des Heizkörpers angebracht. Ferner kann zum Schutz des Heizkörpers ein Zeitschaltwerk vorgesehen werden, das nach einer bestimm ten einstellbaren Zeit den Wärmer auto matisch abschaltet.
Electrical device for heating rail heads, rail webs and other track parts. It is well known that the welding of rail joints and the overlay welding of worn rail head parts play an important role in track construction. Nowadays, this welding work is carried out almost without exception using electrical welding equipment. In some cases, to enable this welding, but in particular to increase the quality of the welding, the rail parts to be welded are preheated and in some cases even reheated after the welding has been carried out. Until now, this was vorbezw. Reheating is usually done by means of a gasoline or oil burner.
Tests with electrical heating devices have shown, however, that if they have a suitable design, a much more even heating can be achieved than is the case with previous non-electrical heating devices, which means that the quality of the weld can be visibly increased.
The subject of the invention is now an electrical device for heating rail heads, rail webs and other track parts, which according to the invention has a radiant electric heater whose shape is adapted to the surface shape of the rail part to be heated so that the radiation distance between the heater and the heater is heated Warmth is the same size practically everywhere.
With reference to the drawing, two exemplary embodiments of the invention are explained in more detail, namely Fig. 1 shows a rail web warmer and Fig. 2 shows a rail head warmer in cross section, the radiator shape being adapted to the particular application.
In both figures, 1 means the radiating radiator of the heater, which is formed out as a meander-shaped band heater and is held in a heat-insulating, refractory brick 2. This stone 2, which has the effect that the heat generated in the radiator 1 is reflected onto the piece of rail to be warmed up and an excessive radiation loss is prevented, is encompassed by a metal housing 3 provided with carrying handles 4. In order to prevent the heating body 1 from coming into contact with the rail 5 when it is heated, 3 projections 6 are provided on the metal housing, which enable the warmer to be pushed as close as possible to the rail.
The heater is expediently supplied with electricity from the mains via a transformer, the transformer voltage being selected so low that there is no danger to the service personnel if the device is accidentally touched. In order to prevent inadmissible heating of the terminal connections of the heater, cooling flags are advantageously attached to the supply and discharge lines of the radiator in the immediate vicinity of the same outside the metal housing. Furthermore, a timer can be provided to protect the radiator, which automatically switches off the warmer after a certain adjustable time.
Claims (1)
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CH243985T | 1944-09-07 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CH243985A true CH243985A (en) | 1946-08-31 |
Family
ID=4463940
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CH243985D CH243985A (en) | 1944-09-07 | 1944-09-07 | Electrical device for heating rail heads, rail webs and other track parts. |
Country Status (1)
| Country | Link |
|---|---|
| CH (1) | CH243985A (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US3095492A (en) * | 1961-12-26 | 1963-06-25 | Northrop Corp | Controlled resistance spot heating device |
| US3991297A (en) * | 1975-02-27 | 1976-11-09 | Bell Telephone Laboratories, Incorporated | Electrically heated soldering device |
| US4412123A (en) * | 1980-05-09 | 1983-10-25 | Bell Telephone Laboratories, Incorporated | Laminated electric heat generating member for reflow soldering devices |
-
1944
- 1944-09-07 CH CH243985D patent/CH243985A/en unknown
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US3095492A (en) * | 1961-12-26 | 1963-06-25 | Northrop Corp | Controlled resistance spot heating device |
| US3991297A (en) * | 1975-02-27 | 1976-11-09 | Bell Telephone Laboratories, Incorporated | Electrically heated soldering device |
| US4081658A (en) * | 1975-02-27 | 1978-03-28 | Bell Telephone Laboratories, Incorporated | Electrically heated soldering device |
| US4412123A (en) * | 1980-05-09 | 1983-10-25 | Bell Telephone Laboratories, Incorporated | Laminated electric heat generating member for reflow soldering devices |
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