EP0457754B1 - Weichenantrieb - Google Patents

Weichenantrieb Download PDF

Info

Publication number
EP0457754B1
EP0457754B1 EP19910890102 EP91890102A EP0457754B1 EP 0457754 B1 EP0457754 B1 EP 0457754B1 EP 19910890102 EP19910890102 EP 19910890102 EP 91890102 A EP91890102 A EP 91890102A EP 0457754 B1 EP0457754 B1 EP 0457754B1
Authority
EP
European Patent Office
Prior art keywords
bolt
switch drive
railway switch
roller
housing
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
EP19910890102
Other languages
German (de)
English (en)
French (fr)
Other versions
EP0457754A3 (en
EP0457754A2 (de
Inventor
Peter Frece
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.)
Alcatel Lucent Austria AG
Original Assignee
Alcatel Austria AG
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 Alcatel Austria AG filed Critical Alcatel Austria AG
Publication of EP0457754A2 publication Critical patent/EP0457754A2/de
Publication of EP0457754A3 publication Critical patent/EP0457754A3/de
Application granted granted Critical
Publication of EP0457754B1 publication Critical patent/EP0457754B1/de
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

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Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B61—RAILWAYS
    • B61L—GUIDING RAILWAY TRAFFIC; ENSURING THE SAFETY OF RAILWAY TRAFFIC
    • B61L5/00—Local operating mechanisms for points or track-mounted scotch-blocks; Visible or audible signals; Local operating mechanisms for visible or audible signals
    • B61L5/10—Locking mechanisms for points; Means for indicating the setting of points

Definitions

  • the invention relates to a switch drive for railway systems, in which the switch tongues are fixed with monitoring rods in the end positions, and the power transmission from the drive unit to the push rod takes place via a non-positively engaging roller in a trough, the roller being guided in a housing slidably arranged on the push rod is and is held by a locking bolt in the trough.
  • Switch machines of this type are known, for example, from DE-AS 19 52 824 and 26 06 664.
  • the locking bolt is pressed against the roller by means of a spring, usually a plate spring, which in turn establishes the non-positive connection with the push rod (FIG. 1).
  • the non-positive connection has the task of making the switch movable. If the switch is opened, a force occurs on the remote switch tongue that lies above the holding force of the non-positive connection and moves the push rod into the other end position (FIG. 2). Since the housing is fixed in the drive housing via a rocker, the push rod pushes the roller out of the recess against the force of the spring and thus unlocks the non-positive connection.
  • the spring force can be adjusted accordingly using a threaded washer.
  • DE-AS 19 52 824 it is proposed to replace the spring and the roller when used as a non-retractable switch, by a suitably designed bolt rigidly connected to the spring housing, whereby the non-positive connection between the push rod and the spring housing is replaced by a positive connection.
  • this device has the disadvantage that the entire spring housing must be replaced when converting.
  • test bars are used, which engage in recesses in the push rods.
  • the recesses have bevelled continuations, so that the test bars are completely lifted out during the opening process.
  • the cutouts in the push rods are only partially chamfered. If the test bar reaches the end of the partially chamfered recess, no further movement is possible and the drive remains locked by the test bar.
  • the disadvantage here is that depending on the use, the push rods must be different, which must already be taken into account during manufacture.
  • the second solution provides for an optional latch that can be used to limit the upward movement of the roll. This maintains the non-positive connection, the test bar is not fully lifted and the entire drive remains locked. This solution also has the disadvantage that the conversion from open to non-openable takes place on a part that is difficult to access.
  • This object is achieved in that the locking bolt is locked at its end facing away from the roller by means of a rigid locking device attached to the housing.
  • a locking device at the upper end of the housing is easily accessible and can, if necessary, be replaced in a simple manner by preloaded springs, and can thus be opened.
  • the locking device has a predetermined breaking point.
  • a predetermined breaking point can be dimensioned according to the desired requirements. It distinguishes a switch equipped with it from the retractable switch in that it cannot be reset. It cannot be driven on again until the predetermined breaking point has been repaired or renewed.
  • the locking device contains a threaded washer which can be screwed into the housing and has a bore concentric with the bolt, the diameter of which is larger than the outer diameter of the bolt, and a shear washer with a predetermined breaking strength which is clamped between the bolt and the threaded washer.
  • the bolt When opening, the bolt is pierced by the shear washer.
  • This predetermined breaking point can be replaced in a simple manner after unscrewing the threaded washer.
  • shear washers of different thickness and / or of different material By using shear washers of different thickness and / or of different material, the breaking strength and thus the unlocking force can be adjusted.
  • the point machine By simply removing the rigid locking device and inserting a spring between the bolt and the threaded washer, the point machine can be set up to be retractable.
  • the controls are easily accessible.
  • a further development of the invention provides that the locking disc is secured against rotation by means of a locking screw. This prevents an undefined distance between the bolt and the shear washer from unintentionally rotating the threaded washer.
  • the securing screw can be sealed and thus protected against the intentional turning of the threaded washer or replacement of the shear washer.
  • Fig. 1 shows a non-positive connection of the push rod and housing according to the prior art.
  • Fig. 2 the same device is shown unlocked after an opening operation.
  • Fig. 3 shows the improved device according to the present invention and Fig. 4 the same device in the opened state.
  • the known arrangement of a non-positive connection between the push rod 1 and the spring housing 4 consists of a roller 3 which is pressed into a trough 2 by means of bolts 5.
  • the contact pressure is generated with a spring 6, which acts on the bolt 5, and can be adjusted accordingly with the threaded washer 7.
  • Fig. 3 shows the device according to the invention, in which the spring is merely replaced by a locking device which consists of a threaded washer 9 and a shear washer 8.
  • the bolt 5 has no path of movement here, but is clamped by the shear washer 8 and the threaded washer 9 screwed into it in a form-fitting manner.
  • the second threaded washer 7 serves here only as a guide and can be screwed into the thread length in any position.
  • the threaded washer is secured non-rotatably by means of a sealing screw 11.
  • the eyelet 12 on the sealing screw 11 offers the possibility of attaching a wire seal and thus protecting the device against misuse.
  • two sealing screws are used at an angle of approximately 90 ° to one another and sealed together with a single sealing wire.
  • Fig. 4 shows the device according to the invention in the opening state.
  • the push rod is pulled to the left.
  • the roller is lifted out of the trough and pressed against the bolt 5.
  • the bolt 5 breaks through the shear washer 8, whereby the non-positive connection is unlocked. Since there is no prestressed return spring, the device can only be brought into operation again by opening the protective cap 10, unscrewing the threaded washer 9, replacing the destroyed shear washer 8 with a new one and inserting the threaded washer 9.

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Train Traffic Observation, Control, And Security (AREA)
  • Railway Tracks (AREA)
  • Mechanisms For Operating Contacts (AREA)
  • Transmissions By Endless Flexible Members (AREA)
  • Transmission Devices (AREA)
  • Driving Mechanisms And Operating Circuits Of Arc-Extinguishing High-Tension Switches (AREA)
EP19910890102 1990-05-14 1991-05-13 Weichenantrieb Expired - Lifetime EP0457754B1 (de)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
AT1057/90 1990-05-14
AT105790A AT393250B (de) 1990-05-14 1990-05-14 Weichenantrieb

Publications (3)

Publication Number Publication Date
EP0457754A2 EP0457754A2 (de) 1991-11-21
EP0457754A3 EP0457754A3 (en) 1993-04-21
EP0457754B1 true EP0457754B1 (de) 1994-09-28

Family

ID=3505653

Family Applications (1)

Application Number Title Priority Date Filing Date
EP19910890102 Expired - Lifetime EP0457754B1 (de) 1990-05-14 1991-05-13 Weichenantrieb

Country Status (9)

Country Link
EP (1) EP0457754B1 (da)
AT (1) AT393250B (da)
CZ (1) CZ279514B6 (da)
DE (1) DE59103079D1 (da)
DK (1) DK0457754T3 (da)
ES (1) ES2064982T3 (da)
HU (1) HU215423B (da)
PL (1) PL164324B1 (da)
SK (1) SK278855B6 (da)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN1299941C (zh) * 2004-10-10 2007-02-14 北京交通大学 一种轮轨道岔转辙机动作状态监测方法和实现***

Families Citing this family (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
SI9300651A (en) * 1992-12-17 1994-06-30 Voest Alpine Eisenbahnsysteme Device for bolding movable parts of railway switches
AT400239B (de) * 1993-09-16 1995-11-27 Alcatel Austria Ag Auffahrbarer weichenantrieb
EP3147174B1 (en) * 2015-09-25 2019-12-11 Alstom Ferroviaria S.P.A. Apparatus for operating a switch of a railway track and associated switch

Family Cites Families (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE487600C (de) * 1929-12-11 Ver Eisenbahn Signalwerke G M Aufschneidkupplung

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN1299941C (zh) * 2004-10-10 2007-02-14 北京交通大学 一种轮轨道岔转辙机动作状态监测方法和实现***

Also Published As

Publication number Publication date
DK0457754T3 (da) 1994-11-14
PL164324B1 (pl) 1994-07-29
SK278855B6 (sk) 1998-04-08
EP0457754A3 (en) 1993-04-21
ES2064982T3 (es) 1995-02-01
ATA105790A (de) 1991-02-15
EP0457754A2 (de) 1991-11-21
HU215423B (hu) 1998-12-28
DE59103079D1 (de) 1994-11-03
AT393250B (de) 1991-09-10
HUT57296A (en) 1991-11-28
CS9101401A2 (en) 1991-12-17
CZ279514B6 (cs) 1995-05-17

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