DE202013000611U1 - Addition of metals to the brake sand (Lokstreusand) - Google Patents

Addition of metals to the brake sand (Lokstreusand) Download PDF

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Publication number
DE202013000611U1
DE202013000611U1 DE201320000611 DE202013000611U DE202013000611U1 DE 202013000611 U1 DE202013000611 U1 DE 202013000611U1 DE 201320000611 DE201320000611 DE 201320000611 DE 202013000611 U DE202013000611 U DE 202013000611U DE 202013000611 U1 DE202013000611 U1 DE 202013000611U1
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Prior art keywords
sand
metals
lokstreusand
addition
density
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Expired - Lifetime
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DE201320000611
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German (de)
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Priority to DE201320000611 priority Critical patent/DE202013000611U1/en
Publication of DE202013000611U1 publication Critical patent/DE202013000611U1/en
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

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Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B60—VEHICLES IN GENERAL
    • B60T—VEHICLE BRAKE CONTROL SYSTEMS OR PARTS THEREOF; BRAKE CONTROL SYSTEMS OR PARTS THEREOF, IN GENERAL; ARRANGEMENT OF BRAKING ELEMENTS ON VEHICLES IN GENERAL; PORTABLE DEVICES FOR PREVENTING UNWANTED MOVEMENT OF VEHICLES; VEHICLE MODIFICATIONS TO FACILITATE COOLING OF BRAKES
    • B60T17/00—Component parts, details, or accessories of power brake systems not covered by groups B60T8/00, B60T13/00 or B60T15/00, or presenting other characteristic features
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B61—RAILWAYS
    • B61C—LOCOMOTIVES; MOTOR RAILCARS
    • B61C15/00—Maintaining or augmenting the starting or braking power by auxiliary devices and measures; Preventing wheel slippage; Controlling distribution of tractive effort between driving wheels
    • B61C15/08—Preventing wheel slippage
    • B61C15/10—Preventing wheel slippage by depositing sand or like friction increasing materials
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B60—VEHICLES IN GENERAL
    • B60B—VEHICLE WHEELS; CASTORS; AXLES FOR WHEELS OR CASTORS; INCREASING WHEEL ADHESION
    • B60B39/00—Increasing wheel adhesion
    • B60B39/02—Vehicle fittings for scattering or dispensing material in front of its wheels
    • B60B39/04—Vehicle fittings for scattering or dispensing material in front of its wheels the material being granular, e.g. sand

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  • Engineering & Computer Science (AREA)
  • Transportation (AREA)
  • Mechanical Engineering (AREA)
  • Braking Arrangements (AREA)

Abstract

Der Zusatz von Metallen zum Bremssand (Lokstreusand) ist dadurch gekennzeichnet, dass zur Aufrechterhaltung der elektrischen Leitfähigkeit zwischen Rad und Schiene dem Bremssand (Lokstreusand) Metalle zugesetzt werden können. Zur Vermeidung von Entmischungen bei der Füllung der Sandstreuer wie auch während des Fahrbetriebes werden zweckmäßigerweise Aluminium oder Aluminiumlegierungen mit einer Dichte, die der Dichte des Quarzes entspricht verwendet. Gleichzeitig ist es zur Verhinderung von Entmischungen erforderlich, dass die Körnung des Aluminiumgranulats dem des Bremssandes entspricht. Zweckmäßigerweise sollte der Metallzusatz zwischen 5–15 m %. betragen.The addition of metals to the brake sand (Lokstreusand) is characterized in that to maintain the electrical conductivity between the wheel and rail the brake sand (Lokstreusand) metals can be added. To avoid segregation during the filling of the sand spreader as well as during driving, it is expedient to use aluminum or aluminum alloys having a density which corresponds to the density of the quartz. At the same time it is necessary to prevent segregation that the grain size of the aluminum granules corresponds to that of the brake sand. Conveniently, the metal addition should be between 5 - 15m%. be.

Description

Das Sanden bei Schienenfahrzeugen erfolgt um die Reibung zwischen Rad und Schiene zu erhöhen. Insbesondere z. B. bei Nässe und hohen Zug- oder Bremskräften eignet sich das Sanden, um die Traktions- oder Bremswirkung zu verbessern.The sanding of rail vehicles takes place in order to increase the friction between wheel and rail. In particular z. B. when wet and high tensile or braking forces, the sanding is to improve the traction or braking effect.

In letzter Zeit wurde häufig über Probleme beim Sanden berichtet u. a. in
http://de.wikipedia.org/wiki/Sandstreuer
„dass bei niedriger Geschwindigkeit gestreuter Bremssand bei einzeln fahrenden Triebfahrzeugen eine isolierende Wirkung zwischen Rad und Schiene verursachen kann. Durch so entstandene fehlerhafte Gleisfreimeldungen an elektrischen Gleisstromkreisen kam es wiederholt zu Zusammenstößen. Das Eisenbahn-Bundesamt wies die Eisenbahnverkehrsunternehmen an, bei scheibengebremsten Triebfahrzeugen das Sanden bei Geschwindigkeiten von 25 km/h (oder weniger) zu vermeiden”.Lately, sanding problems have been reported frequently, including in
http://de.wikipedia.org/wiki/Sandstreuer
"Braking sand that is scattered at a low speed can cause an insulating effect between the wheel and the rail when the locomotive is driving individually. As a result of faulty track vacancies on electrical track circuits, there were repeated clashes. The Federal Railway Authority instructed the railway undertakings to avoid silting at speeds of 25 km / h (or less) on disc-braked locomotives. "

Es wurde gefunden, dass zur Aufrechterhaltung der elektrischen Leitfähigkeit zwischen Rad und Schiene dem Bremssand (Lokstreusand) Metalle zugesetzt werden können. Als möglich erscheinen Eisen- oder Stahlgranulat. Wegen der hohen Dichte von ca. 8 g/cm3 kann es jedoch bei der Füllung der Sandstreuer wie auch während des Fahrbetriebes zu Entmischungen kommen, so dass zweckmäßigerweise Aluminium oder Aluminiumlegierungen mit einer Dichte (wahre Dichte) von 2,7 g/cm3, die der Dichte des Quarzes von 2,65 g/cm3 entspricht. Eine weitere Voraussetzung für die Verhinderung von Entmischungen ist, dass die Körnung des Aluminiumgranulats dem des Bremssandes entspricht z. B. 0,71–1,6 mm gemäß BN 918 224 . Zweckmäßigerweise sollte der Metallzusatz zwischen 5–15 m % betragen.It has been found that, in order to maintain the electrical conductivity between wheel and rail, metals can be added to the brake sand (locomotive grit). As possible appear iron or steel granules. Due to the high density of about 8 g / cm 3 , however, segregation may occur during the filling of the sand spreaders as well as during driving, so that expediently aluminum or aluminum alloys with a density (true density) of 2.7 g / cm 3 , which corresponds to the density of the quartz of 2.65 g / cm 3 . Another requirement for the prevention of segregation is that the grain size of the aluminum granules corresponds to that of the brake sand z. B. 0.71-1.6 mm according to BN 918 224 , Conveniently, the metal addition should be between 5-15 m%.

ZITATE ENTHALTEN IN DER BESCHREIBUNG QUOTES INCLUDE IN THE DESCRIPTION

Diese Liste der vom Anmelder aufgeführten Dokumente wurde automatisiert erzeugt und ist ausschließlich zur besseren Information des Lesers aufgenommen. Die Liste ist nicht Bestandteil der deutschen Patent- bzw. Gebrauchsmusteranmeldung. Das DPMA übernimmt keinerlei Haftung für etwaige Fehler oder Auslassungen.This list of the documents listed by the applicant has been generated automatically and is included solely for the better information of the reader. The list is not part of the German patent or utility model application. The DPMA assumes no liability for any errors or omissions.

Zitierte Nicht-PatentliteraturCited non-patent literature

  • http://de.wikipedia.org/wiki/Sandstreuer [0002] http://en.wikipedia.org/wiki/Sandstreuer [0002]
  • BN 918 224 [0003] BN 918 224 [0003]

Claims (1)

Der Zusatz von Metallen zum Bremssand (Lokstreusand) ist dadurch gekennzeichnet, dass zur Aufrechterhaltung der elektrischen Leitfähigkeit zwischen Rad und Schiene dem Bremssand (Lokstreusand) Metalle zugesetzt werden können. Zur Vermeidung von Entmischungen bei der Füllung der Sandstreuer wie auch während des Fahrbetriebes werden zweckmäßigerweise Aluminium oder Aluminiumlegierungen mit einer Dichte, die der Dichte des Quarzes entspricht verwendet. Gleichzeitig ist es zur Verhinderung von Entmischungen erforderlich, dass die Körnung des Aluminiumgranulats dem des Bremssandes entspricht. Zweckmäßigerweise sollte der Metallzusatz zwischen 5–15 m %. betragen.The addition of metals to the brake sand (Lokstreusand) is characterized in that to maintain the electrical conductivity between the wheel and rail the brake sand (Lokstreusand) metals can be added. To avoid segregation during the filling of the sand spreader as well as during driving, it is expedient to use aluminum or aluminum alloys having a density which corresponds to the density of the quartz. At the same time it is necessary to prevent segregation that the grain size of the aluminum granules corresponds to that of the brake sand. Conveniently, the metal addition should be between 5-15 m%. be.
DE201320000611 2013-01-22 2013-01-22 Addition of metals to the brake sand (Lokstreusand) Expired - Lifetime DE202013000611U1 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
DE201320000611 DE202013000611U1 (en) 2013-01-22 2013-01-22 Addition of metals to the brake sand (Lokstreusand)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DE201320000611 DE202013000611U1 (en) 2013-01-22 2013-01-22 Addition of metals to the brake sand (Lokstreusand)

Publications (1)

Publication Number Publication Date
DE202013000611U1 true DE202013000611U1 (en) 2013-02-21

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DE201320000611 Expired - Lifetime DE202013000611U1 (en) 2013-01-22 2013-01-22 Addition of metals to the brake sand (Lokstreusand)

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DE (1) DE202013000611U1 (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2015052307A1 (en) * 2013-10-11 2015-04-16 Knorr-Bremse Systeme für Schienenfahrzeuge GmbH Output device for friction modifiers for a rail vehicle

Non-Patent Citations (2)

* Cited by examiner, † Cited by third party
Title
BN 918 224
http://de.wikipedia.org/wiki/Sandstreuer

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2015052307A1 (en) * 2013-10-11 2015-04-16 Knorr-Bremse Systeme für Schienenfahrzeuge GmbH Output device for friction modifiers for a rail vehicle

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R086 Non-binding declaration of licensing interest
R207 Utility model specification

Effective date: 20130418

R156 Lapse of ip right after 3 years