EP0376552B1 - Appareil de meulage de rails - Google Patents

Appareil de meulage de rails Download PDF

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Publication number
EP0376552B1
EP0376552B1 EP19890313086 EP89313086A EP0376552B1 EP 0376552 B1 EP0376552 B1 EP 0376552B1 EP 19890313086 EP19890313086 EP 19890313086 EP 89313086 A EP89313086 A EP 89313086A EP 0376552 B1 EP0376552 B1 EP 0376552B1
Authority
EP
European Patent Office
Prior art keywords
rail
grinding
rollers
frame
grinding apparatus
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 - Lifetime
Application number
EP19890313086
Other languages
German (de)
English (en)
Other versions
EP0376552A3 (fr
EP0376552A2 (fr
Inventor
Hirotsugu Oishibashi
Soji Fujimori
Muneyuki Ohara
Haruo Yokoyama
Akihiro Hosokawa
Kosuke Nagai
Hideshi Miyazaki
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.)
Railway Technical Research Institute
Sumikin Osaka Plant Co Ltd
Sumitomo Metal Technology Inc
Original Assignee
Railway Technical Research Institute
Sumikin Osaka Plant Co Ltd
Sumitomo Metal Technology Inc
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 Railway Technical Research Institute, Sumikin Osaka Plant Co Ltd, Sumitomo Metal Technology Inc filed Critical Railway Technical Research Institute
Publication of EP0376552A2 publication Critical patent/EP0376552A2/fr
Publication of EP0376552A3 publication Critical patent/EP0376552A3/fr
Application granted granted Critical
Publication of EP0376552B1 publication Critical patent/EP0376552B1/fr
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

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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
    • E01B31/12—Removing metal from rails, rail joints, or baseplates, e.g. for deburring welds, reconditioning worn rails
    • E01B31/17—Removing metal from rails, rail joints, or baseplates, e.g. for deburring welds, reconditioning worn rails by grinding
    • E01B31/175—Removing metal from rails, rail joints, or baseplates, e.g. for deburring welds, reconditioning worn rails by grinding using grinding belts

Definitions

  • This invention relates to a rail grinding apparatus for grinding the welded joints of railroad rails. More particularly, it relates to a rail grinding apparatus which does not require the exertion of any significant force by the operator of the apparatus.
  • FIG 1 is a side view of two rails 1 which have been connected by conventional butt welding
  • Figure 2 is a cross-sectional view taken along Line II-II of Figure 1.
  • a weld bead is formed around the entire periphery of the joint between the two rails 1.
  • the weld bead extends considerably above the surface of the rails 1, so it must be removed by grinding.
  • the weld bead is removed from the weld joint using a hand grinder.
  • a surface hand grinder is used to grind the top surface 12, while common hand grinders are used to grind the gage corner surfaces 13 and the upper lateral surfaces 14 of the rails 1. Two different types of grinders must be used. These grinders are hereunder collectively referred to merely as "hand grinders”.
  • the contact force between a hand grinder and the surface of the rails 1 must be exerted by the operator of the hand grinder.
  • hand grinding often produces irregularities in the surface of the rails 1, and it is difficult to obtain a finished surface having the required surface tolerance of -0.1 - +0.3 mm/m.
  • Hand grinding also produces an unpleasant shrill noise, which is objectionable from the standpoint of both the operator of the hand grinder and others working nearby.
  • a hand grinder generates vibrations which are not only fatiguing to an operator and prevent him from working for long periods but which also may cause the operator to develop medical problems, such as Raynaud's phenomenon.
  • Patent GB 817826 (see preamble of claim 1) describes a rail-grinding machine arranged to be supported on the rail surface by two sets of rollers mounted with their axes of rotation perpendicular to one another.
  • the rail grinding apparatus of the present invention which is defined in the appended claims, has a frame equipped with rolling support members, such as rollers or wheels, which support the frame while rolling along the surface of a rail.
  • a rotary grinding device such as a motor-driven grinding belt or a grinding wheel, is mounted on the frame such that the grinding device can grind the surface of a rail when the rolling support members are resting on the rail.
  • the rolling support member carries all or substantially all of the weight of the grinding apparatus, and the force of contact between the grinding device and the rail is produced by the weight of the grinding apparatus.
  • the grinding apparatus can be rolled along a rail by being lightly pushed by an operator, and the operator does not have to exert any significant force on the grinding apparatus during operation.
  • the grinding device may be surrounded by a guard which protects the operator and reduces the level of noise generated by the grinding apparatus.
  • Figure 1 is an elevation of a pair of railroad rails which have been connected by butt welding.
  • Figure 2 is a cross-sectional view taken along Line II-II of Figure 1.
  • Figure 3 is a perspective view of an embodiment of a rail grinding apparatus according to the present invention when grinding the top surface of a rail.
  • Figure 4 is an end view of the rail grinding apparatus of Figure 3 when grinding the gage corner surface of a rail.
  • Figure 5 is an end view of the rail grinding apparatus of Figure 3 when grinding the upper lateral surface of a rail.
  • Figure 3 illustrates this embodiment when grinding the top surface 12 of a rail 1.
  • the rail grinding apparatus which is indicated by reference numeral 2
  • Rotating support members in the form of first and second rollers 41 and 42 are rotatably mounted on the lower portions of the front end (the left end in Figure 3) and the rear end of the frame 3.
  • the first rollers 41 extend perpendicularly from the frame 3, while the second rollers 42 extend downwards in the plane of the frame 3.
  • the front end of the frame 3 includes an adjusting screw 31 which enables the height of the front end to be adjusted.
  • a rotary grinding device in the form of a grinding belt 23 is wrapped around a pair of pulleys 21 and 22 which are rotatably mounted on the frame 3.
  • the pulleys 21 and 22 extend perpendicularly from the frame 3 parallel to the first rollers 41.
  • the front pulley 22 is preferably made of an elastic material such as rubber so that the grinding belt 23 will be resiliently pressed against the rail 1 by the pulley 22.
  • the rear pulley 21 is rotated by an electric motor 24 which is mounted on the frame 3, and the rotation of the rear pulley 21 is transmitted to the front pulley 22 by the grinding belt 23.
  • the tension in the grinding belt 23 can be adjusted by a conventional tensioning mechanism 25 which is secured to the frame 3.
  • the motor 24 can be controlled by a switch box 7 which is incorporated into the upper portion of the frame 3.
  • the pulleys 21 and 22 and the grinding belt 23 are covered by a protective cover 5 which prevents clothing and other items from becoming caught in the pulleys 21 and 22 and also protects the operator from grinding sparks.
  • the cover 5 can also greatly reduce the level of noise which is generated by the grinding apparatus.
  • a guard plate 6 is secured to the underside of the protective cover 5 just to the rear of the rear pulley 21 to protect the rear rollers 41 and 42 from grinding sparks.
  • the force of contact between the grinding belt 23 and the rail 1 can be adjusted by the adjusting screw 31.
  • This force is provided by the weight of the grinding apparatus 2, which is constant, grinding can be performed with a uniform grinding force, so a uniform surface finish can be obtained.
  • the operator rolls the grinding apparatus 2 along the rail 1 to a welded joint.
  • the adjusting screw 31 is adjusted to produce a suitable contact force between the grinding belt 23 and the rail 1.
  • the operator then turns on the motor 24 to rotate the grinding belt 23. While the grinding belt 23 is turning, the operator may want to move the frame 3 in the lengthwise direction of the rail 1 back and forth over the joint.
  • the second rollers 42 act as guide rollers and help the operator to keep the grinding apparatus 2 atop the rail 1.
  • the weight of the grinding apparatus 2 is entirely supported by the first rollers 41 and the grinding force is provided by the weight of the grinding apparatus 2, the operator has to exert very little force on the grinding apparatus 2 and is not subjected to harmful vibrations.
  • the frame 3 When grinding the gage corner surfaces 13 of a rail 1, the frame 3 is tilted as shown in Figure 4 so that the first and second rollers 41 and 42 rest on the gage corner surfaces 13 on opposite sides of the rail 1. In this attitude, the motor 24 is turned on to grind the gage corner surface 13 on which the first roller 41 is resting. When it is desired to grind the gage corner surface 13 on the other side of the rail 1, the grinding apparatus 2 is repositioned so that the first rollers 41 rest on the other side.

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Architecture (AREA)
  • Civil Engineering (AREA)
  • Structural Engineering (AREA)
  • Machines For Laying And Maintaining Railways (AREA)
  • Finish Polishing, Edge Sharpening, And Grinding By Specific Grinding Devices (AREA)

Claims (5)

  1. Appareil de meulage de rails comprenant un dispositif de meulage rotatif (23), des rouleaux porteurs avant et arrière (41) disposés de façon à supporter le dispositif de meulage sur la surface de rail et des seconds rouleaux avant et arrière (42) montés de façon que leurs axes de rotation soient perpendiculaires à l'axe de rotation des rouleaux porteurs, caractérisé en ce que le dispositif de meulage et les rouleaux porteurs et les seconds rouleaux sont montés sur un bâti (3) s'étendant généralement perpendiculairement aux axes de rotation des rouleaux porteurs, les axes de rotation des seconds rouleaux sont fixés par rapport au bâti (3) de telle sorte que le bâti puisse être incliné le long de la surface latérale du rail en même temps que le dispositif de meulage, et il est prévu un moyen de réglage (31) pour ajuster la position d'un rouleau porteur par rapport au bâti, et pour régler par conséquent la hauteur du dispositif de meulage au-dessus du rail.
  2. Appareil de meulage de rails selon la revendication 1, dans lequel le moyen de réglage (31) est une vis de réglage pour régler la hauteur du rouleau porteur avant.
  3. Appareil de meulage de rails tel que revendiqué dans les revendications 1 et 2, dans lequel le dispositif de meulage rotatif comprend :
    - une paire de poulies (21, 22) qui sont montées de façon tournante dans le bâti (3) ;
    - une courroie de meulage (23) qui est enroulée autour des poulies (21, 22) ;
    - et un moteur (24) pour faire tourner les poulies.
  4. Appareil de meulage de rails tel que revendiqué dans une quelconque des revendications précédentes, comprenant en outre un protecteur anti-bruit (5) qui entoure le dispositif de meulage rotatif.
  5. Appareil de meulage de rails tel que revendiqué dans une quelconque des revendications 2 à 4, dans lequel une des poulies (21, 22) est formée d'un matériau élastique.
EP19890313086 1988-12-27 1989-12-14 Appareil de meulage de rails Expired - Lifetime EP0376552B1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
JP1988169592U JPH0621921Y2 (ja) 1988-12-27 1988-12-27 レール溶接部研削機
JP169592/88U 1988-12-27

Publications (3)

Publication Number Publication Date
EP0376552A2 EP0376552A2 (fr) 1990-07-04
EP0376552A3 EP0376552A3 (fr) 1991-02-27
EP0376552B1 true EP0376552B1 (fr) 1994-08-24

Family

ID=15889345

Family Applications (1)

Application Number Title Priority Date Filing Date
EP19890313086 Expired - Lifetime EP0376552B1 (fr) 1988-12-27 1989-12-14 Appareil de meulage de rails

Country Status (4)

Country Link
EP (1) EP0376552B1 (fr)
JP (1) JPH0621921Y2 (fr)
CA (1) CA1324887C (fr)
DE (1) DE68917706T2 (fr)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN111074702A (zh) * 2019-12-31 2020-04-28 北京交通大学 砂带式钢轨打磨作业控制系统及其打磨控制方法

Families Citing this family (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US6358140B1 (en) * 1999-10-29 2002-03-19 Fci Usa Inc. Railroad rail support for a grinder
JP2009215764A (ja) * 2008-03-10 2009-09-24 Railway Technical Res Inst レール削正装置、レール削正方法及びレール削正車
US9266211B2 (en) 2012-05-25 2016-02-23 Shiroki Corporation Method and apparatus for smoothing welded member
AT14054U1 (de) * 2013-12-03 2015-03-15 Plasser & Theurer Export Von Bahnbaumaschinen Gmbh Schleifaggregat zum Abschleifen einer Schiene
JP6810462B2 (ja) * 2018-01-19 2021-01-06 保線機器整備株式会社 レール削正装置

Family Cites Families (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2096424A (en) * 1935-02-26 1937-10-19 Keystone Grinder & Mfg Company Method and apparatus for grinding
GB817826A (en) * 1957-04-01 1959-08-06 Elektro Thermit Gmbh Grinding machines for the machining of rails true to profile
DE1154496B (de) * 1960-01-26 1963-09-19 Robel & Co G Von Hand verfahrbares Schienenschleifgeraet
US3417511A (en) * 1965-04-15 1968-12-24 Murphy Ind Inc G W Belt sander
JPS5511813U (fr) * 1978-07-05 1980-01-25
JPS57158404A (en) * 1981-03-27 1982-09-30 Japan National Railway Rail polishing machine

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN111074702A (zh) * 2019-12-31 2020-04-28 北京交通大学 砂带式钢轨打磨作业控制系统及其打磨控制方法

Also Published As

Publication number Publication date
JPH0289001U (fr) 1990-07-13
DE68917706T2 (de) 1994-12-22
EP0376552A3 (fr) 1991-02-27
EP0376552A2 (fr) 1990-07-04
CA1324887C (fr) 1993-12-07
JPH0621921Y2 (ja) 1994-06-08
DE68917706D1 (de) 1994-09-29

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