Global Patent Index - EP 0524661 A1

EP 0524661 A1 19930127 - Rail grinding machine.

Title (en)

Rail grinding machine.

Title (de)

Schienenschleifmaschine.

Title (fr)

Machine de meulage de rails.

Publication

EP 0524661 A1 19930127 (EN)

Application

EP 92116283 A 19881014

Priority

  • EP 92116283 A 19881014
  • US 10954287 A 19871016

Abstract (en)

A rail grinding machine (20) especially designed for grinding railroad track rails (34) at railroad track switches and road crossings. Railroad switches and road crossings present particular problems to the rail grinding process. Gaps are necessarily presented in the railroad switches to permit the wheels of a railroad car to cross over one or the other of a set of rails in the switch and at least one of the set of rails in a switch will be curved. An additional problem presented at road crossings as well as at railroad switches is the presence of obstructions close to the railroad. The grinding machine includes an articulated grinding module supporting undercarriage (26) suspended from the grinding machine main frame (22). The undercarriage includes a unique suspension system that allows for lateral shifting and pivoting of the undercarriage independently of the grinding machine main frame. Grinding operations are controlled by sensing the supply pressure of the constant flow hydraulic fluid used to power the individual grinding modules (158), and positioning the grinding modules in grinding abutment with the rails as a function of the supply pressure. <IMAGE>

IPC 1-7

E01B 31/17

IPC 8 full level

E01B 31/17 (2006.01)

CPC (source: EP)

E01B 31/17 (2013.01)

Citation (applicant)

GB 2056345 A 19810318 - PLASSER BAHNBAUMASCH FRANZ

Citation (search report)

Designated contracting state (EPC)

AT BE CH DE FR GB IT LI LU NL SE

DOCDB simple family (publication)

EP 0524661 A1 19930127

DOCDB simple family (application)

EP 92116283 A 19881014