DE478255C - Rail brake magnet with flat iron shoes - Google Patents

Rail brake magnet with flat iron shoes

Info

Publication number
DE478255C
DE478255C DEM104007D DEM0104007D DE478255C DE 478255 C DE478255 C DE 478255C DE M104007 D DEM104007 D DE M104007D DE M0104007 D DEM0104007 D DE M0104007D DE 478255 C DE478255 C DE 478255C
Authority
DE
Germany
Prior art keywords
flat iron
rail brake
brake magnet
iron shoes
shoes
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
Application number
DEM104007D
Other languages
German (de)
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.)
Individual
Original Assignee
Individual
Publication date
Priority to DEM104007D priority Critical patent/DE478255C/en
Application granted granted Critical
Publication of DE478255C publication Critical patent/DE478255C/en
Expired legal-status Critical Current

Links

Classifications

    • BPERFORMING OPERATIONS; TRANSPORTING
    • B61RAILWAYS
    • B61HBRAKES OR OTHER RETARDING DEVICES SPECIALLY ADAPTED FOR RAIL VEHICLES; ARRANGEMENT OR DISPOSITION THEREOF IN RAIL VEHICLES
    • B61H7/00Brakes with braking members co-operating with the track
    • B61H7/02Scotch blocks, skids, or like track-engaging shoes
    • B61H7/04Scotch blocks, skids, or like track-engaging shoes attached to railway vehicles
    • B61H7/06Skids
    • B61H7/08Skids electromagnetically operated

Landscapes

  • Physics & Mathematics (AREA)
  • Electromagnetism (AREA)
  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Dynamo-Electric Clutches, Dynamo-Electric Brakes (AREA)

Description

Die Schleifstücke oder Polstücke der Schienenbremsmagnete, die im nachfolgenden der Kürze halber als Schuhe bezeichnet werden, werden bei der heutigen modernen Bauart aus Flacheisen hergestellt, weil so der Verbrauch und Ersatz dieser Teile am billigsten werden. Die Verwendung von solchen Flacheisenstücken bedingte bisher, daß der übrige Magnetkörper aus Stahlguß angefertigt wurde, weil nur bei einer bestimmten Formung des Magnetkörpers eine leichte Befestigung der Flacheisenschuhe möglich war. So sind alle von den verschiedenen Firmen hergestellten Schienenbremsmagnete aus Stahlguß, sobald sie Flacheisenschuhe besitzen. Nur einige wenige Magnete mit Flacheisenschuhen haben im Gegensatz dazu einen schmiedeeisernen Magnetkörper; dieser ist aber dann aus mindestens drei einzelnen Stücken zusammengeschraubt. Da nun wegen des magnetischen Flusses alle Fugen sehr genau gearbeitet sein müssen, bedingt ein solcher schmiedeeiserner Magnetkörper, der aus mehreren Teilen zusammengesetzt as ist, verhältnismäßig hohe Lohnaufwendungen, so daß solche Magnete teurer werden als Stahlgußmagnete.The contact strips or pole pieces of the rail brake magnets, which are described below to be referred to as shoes for brevity, are modern in today's world Type made of flat iron, because this is the cheapest way to use and replace these parts will. The use of such flat iron pieces has previously required that the rest of the magnet body be made of cast steel was, because only with a certain shape of the magnet body an easy attachment the flat iron shoes was possible. All rail brake magnets manufactured by the various companies are made of cast steel, as soon as they own flat iron shoes. Just a few magnets with flat iron shoes in contrast, have a wrought iron magnetic body; but this is then made up of at least three individual ones Pieces screwed together. Since all joints must be worked very precisely because of the magnetic flux, conditionally such a wrought iron magnetic body, which is composed of several parts As is, relatively high wages, so that such magnets are more expensive than Cast steel magnets.

Die Verwendung von Schmiedeeisen statt des Stahlgusses würde aber verschiedene Vorteile bieten. Vom technischen Standpunkt z. B. schon deswegen, weil der Guß leicht porös ausfällt, wodurch die Festigkeit gewisser Teile leidet, welche einer mechanischen Beanspruchung ausgesetzt sind, wie z. B. die Anschläge für die Mitnehmer. Ebenso leidet unter der Porosität der magnetische Querschnitt. Ein weiterer technischer Vorteil des Schmiedeeisens wäre, daß es sich leicht fräsen läßt, während der Stahlguß in dieser Beziehung dadurch große Störungen verursacht, daß immer wieder harte Stellen im Guß vorhanden sind, bei denen der Fräser ausbricht. Während man also Schmiedeeisen für diese Zwecke fräsen könnte, kann man den Stahlguß nur hobeln, was teurer ist. Ein Hauptnachteil des Stahlgusses ist aber vom Fabrikationsstandpunkt aus, daß man für jede Type ein bestimmtes Modell vorrätig haben muß und im Falle einer Bestellung auf die Anlieferung der Modellabgüsse warten muß, was für die Lieferzeit bei jeder Bestellung einen Verlust von mindestens ι Monat bedeutet.The use of wrought iron instead of cast steel would be different Offer advantages. From the technical point of view e.g. B. because the cast is slightly porous, which increases the strength certain parts which are exposed to mechanical stress suffers, such as z. B. the stops for the driver. Magnetic porosity also suffers from porosity Cross-section. Another technical advantage of wrought iron would be that it can can be easily milled, while the cast steel in this respect causes great disturbances causes that there are always hard spots in the cast where the cutter breaks out. So while you could mill wrought iron for this purpose, you can only plane the cast steel, which is more expensive. A major disadvantage of cast steel, however, from the manufacturing point of view, is that it is necessary for each type must have a certain model in stock and in the case of an order Have to wait for the delivery of the model casts, which for the delivery time for each Order means a loss of at least ι month.

Alle die oben aufgezählten Nachteile werden vermieden, wenn man ein SpezialprofU walzen läßt nach der als Querschnitt 1, 1' in der Abbildung dargestellten Form. Man hat dann ein porenfreies, in allen Querschnitten verläßliches einheitliches Material für alle Typen, das man leicht lagern kann und das sich sehr leicht fräsen oder auf genauen Querschnitt fertigziehen läßt, so daß auch die Bearbeitungskosten viel geringer werden. Bei Bestellungen braucht man nur die für die jeweilige Type notwendige Länge von diesem SpezialprofU abzuschneiden und gewinnt dadurch an der Lieferzeit.All of the disadvantages listed above are avoided if a special profile is rolled according to the shape shown as cross-section 1, 1 'in the figure. You then have a pore-free, uniform material, reliable in all cross-sections, for all types, which can be easily stored and which can be milled or finished to a precise cross-section very easily, so that the machining costs are also much lower. When ordering, you only need to cut off the length necessary for the respective type from this special profile and thus gain in delivery time.

In der Abbildung bedeutet 1 und 1' das Spezialprofil, 2 und 2' die Flacheisenschuhe und 3 den Magnetkern, der aus einem Vierkanteisen stück geschnitten wird.In the figure, 1 and 1 'mean that Special profile, 2 and 2 'the flat iron shoes and 3 the magnetic core, which is made from a square iron piece is cut.

Claims (1)

Patentanspruch:Claim: Schienenbremsmagnet mit Flacheisenschuhen, dadurch gekennzeichnet, daß die beiden Wangen des Magnetkörpers nicht aus Stahlguß hergestellt werden, sondern in einem Stück als Spezialprofil gewalzt werden.Rail brake magnet with flat iron shoes, characterized in that the both cheeks of the magnet body are not made of cast steel, but rolled in one piece as a special profile. Hierzu ι Blatt ZeichnungenFor this purpose ι sheet of drawings
DEM104007D Rail brake magnet with flat iron shoes Expired DE478255C (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
DEM104007D DE478255C (en) Rail brake magnet with flat iron shoes

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DEM104007D DE478255C (en) Rail brake magnet with flat iron shoes

Publications (1)

Publication Number Publication Date
DE478255C true DE478255C (en) 1929-06-20

Family

ID=7325281

Family Applications (1)

Application Number Title Priority Date Filing Date
DEM104007D Expired DE478255C (en) Rail brake magnet with flat iron shoes

Country Status (1)

Country Link
DE (1) DE478255C (en)

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