EP1470983A1 - Weichenregler - Google Patents

Weichenregler Download PDF

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Publication number
EP1470983A1
EP1470983A1 EP20040075987 EP04075987A EP1470983A1 EP 1470983 A1 EP1470983 A1 EP 1470983A1 EP 20040075987 EP20040075987 EP 20040075987 EP 04075987 A EP04075987 A EP 04075987A EP 1470983 A1 EP1470983 A1 EP 1470983A1
Authority
EP
European Patent Office
Prior art keywords
hook
moving rods
driving member
switch
point regulator
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.)
Withdrawn
Application number
EP20040075987
Other languages
English (en)
French (fr)
Inventor
Petrus Josef Schouten
Hendrik Jan Budel
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.)
Vialis NMA Railway Signalling BV
Original Assignee
Vialis NMA Railway Signalling BV
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 Vialis NMA Railway Signalling BV filed Critical Vialis NMA Railway Signalling BV
Publication of EP1470983A1 publication Critical patent/EP1470983A1/de
Withdrawn legal-status Critical Current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
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B61—RAILWAYS
    • B61L—GUIDING RAILWAY TRAFFIC; ENSURING THE SAFETY OF RAILWAY TRAFFIC
    • B61L11/00—Operation of points from the vehicle or by the passage of the vehicle
    • B61L11/02—Operation of points from the vehicle or by the passage of the vehicle using mechanical interaction between vehicle and track
    • B61L11/04—Trailable point locks
    • 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
    • B61L5/107—Locking mechanisms for points; Means for indicating the setting of points electrical control of points position

Definitions

  • the invention relates to a point regulator for driving the two tongues of a railway switch between two switch positions, at least comprising two moving rods connected to the respective tongues, which move said tongues, and a driving mechanism for said moving rods, as well as locking means for locking the moving rods in positions corresponding to the switch positions of the tongues.
  • Such a point regulator is used for moving railway switches forming part of a railway system for track vehicles (trains, trams, underground railway cars or the like) to and fro between the two switch positions thereof.
  • a point regulator usually also comprises control rods, which can check whether the switch is correctly positioned in either one of its two switch positions.
  • Switches may be used for diverting a track vehicle from a main line to a branch line, for example. If the switch is in the position in which the track vehicle can be diverted to the branch line, but a track vehicle on the main line approaches the switch from the opposite direction, the switch is occasionally "trailed".
  • the driving mechanism of some known point regulators therefore comprises parts that will break when a specific force is exceeded and thus allow the movement of the moving rods without the driving mechanism being activated or the tongues and the point regulator being damaged or the track vehicle being derailed.
  • a drawback of this solution is that when a switch is trailed in this manner, at least the broken parts need to be replaced or repaired.
  • Some other known point regulators can be trailed in reverse direction, to be true, but the features being used therein (such as a spring-mounted open tongue) have specific drawbacks.
  • the present invention provides a point regulator of the kind referred to in the introduction, wherein the driving mechanism comprises a driving member that can move to and fro in the direction of movement of the moving rods, which driving member can be selectively connected to the moving rods by means of a connecting member, in such a manner that, starting from the switch positions,
  • the aforesaid selective connection between the driving member and the moving rods by means of a connecting member can be obtained in an advantageous manner in that the connecting member is provided with two hooks, which are each movable between an engaging position, in which they are in engagement with the driving member, and a release position, in which they are out of engagement with the driving member, wherein each of the hooks can only transmit a force between the driving member and the moving rods in one direction in the engaging position, the direction of one hook being opposed to the direction of the other hook, and wherein said hooks are driven in such a manner that in each of the two switch positions it is the hook in the engaging position that, starting from the respective switch position, can transmit a driving force from the driving member to the moving rods, whilst the other hook is in the release position in that case.
  • the hook which is in its engaging position in a respective position of the switch, is capable of transmitting a movement of the driving member to the moving rods. Said transmission involves the transmission of a force in a specific direction between the driving member and the moving rods. Once the other switch position is reached, the hook takes up its release position. If the moving rods would subsequently be moved while the switch is being trailed, a force of opposite sense would be exerted, which force could only be transmitted by the hook, which is in its release position in the aforesaid switch position, however. In this way the moving rods can be moved without the driving member moving in the same direction. Once the other switch position has been reached, the situation is reversed, with the aforesaid hook being moved to its engaging position again and the other hook reaching its release position.
  • the locking means In order to enable movement of the hooks between their engaging position and their release position, it is preferable in another embodiment of the point regulator according to the invention for the locking means to mate with the hooks for the purpose of placing the hooks into the engaging position or into the release position thereof.
  • the locking means consist of two locking pins that are movable in a direction substantially transversely to the direction of movement of the moving rods, which locking pins interlock in the two switch positions with locking recesses or the like formed in the moving rods, and which move a corresponding hook to its release position in said interlocked position.
  • locking pins may also interlock with control rods that may be used.
  • the control rods may also be provided with locking recesses or the like in that case, which recesses can mate with corresponding locking cams or the like on the locking pins in the two switch positions.
  • locking means are preferably used for retaining a hook in the release position thereof when said hook has been released by the corresponding locking pin and the driving member and the moving rods are disconnected from each other and are being moved with respect to each other.
  • the hook in question must not be moved to the engaging position until the driving member and the moving rods have reached their interconnected, mating position again, so that normal operation of the railway switch becomes possible again.
  • the locking means can be activated and deactivated by mating with the driving member.
  • the locking means consist of two pivoted catches that mate with a respective hook, which catches can engage a curved track of the driving member with a first end and mate directly or indirectly with a corresponding hook with an opposite second end so as to retain said hook in the release position.
  • the locking means (which may consist of locking pins, for example) are capable of mating with the hooks for placing said hooks into the engaging position or into the release position thereof.
  • the connecting member consists of a sliding plate supporting the hooks, which is in essence connected to the moving rods but which can move to a limited extent with respect to said moving rods in the direction of movement thereof, the relative movement of the sliding plate and the moving rods being used for unlocking the locking means.
  • the sliding plate Upon movement of the driving member from one switch position, the sliding plate will first make a limited movement relative to the moving rods, which relative movement will result in the locking means moving to an unlocked position. Only after said unlocking has taken place will the sliding plate and the moving rods no longer be able to move relative to each other and will the driving member carry the moving rods along in the desired direction.
  • a constructional solution for linking the movement of the sliding plate with respect to the moving rods and the movement of the locking means is provided in a simple manner if the sliding plate and the locking means comprise mating curved means for effecting the unlocking of the locking means.
  • a constructional solution within this framework is to provide the sliding plate with curved tracks and to provide the locking means with follow-on rollers that mate with said curved tracks.
  • the two tongues When a railway switch is trailed by a passing track vehicle, as explained in the foregoing, the two tongues generally do not move synchronically at first, but one of the tongues will generally start its movement before the other tongue.
  • the two moving rods are preferably interconnected, which connection is broken when a specific force is exceeded.
  • a part of a railway system comprising two rails 1 and 2 is shown.
  • Two tongues 3 and 4 can be driven between two positions by a point regulator 5.
  • the tongue 3 In the position of the tongue that is shown in Fig. 1, the tongue 3 is the so-called closed tongue, whilst the opposite tongue 4 is the open tongue.
  • the tongue 4 In another position of the switch (e.g. see Fig. 2F), the tongue 4 is the closed tongue and the tongue 3 is the open tongue.
  • the tongues 3 and 4 are provided with tongue attachments 6 and 7. Moving rods 8 and 9 forming part of the point regulator 5 are connected to said tongue attachments.
  • the tongues 3 and 4 additionally have secondary tongue attachments 6' and 7', to which so-called control rods 11, 12 are connected.
  • the control rods 11, 12 are intended to mate with locking pins 13 and 14, which in turn mate with switch assemblies 15 and 16. In the switch position that is shown in Fig.
  • the left-hand locking pin 13 may take up a position (for example as a result of the mating interaction between the projections formed on the locking pin and recesses formed in the control rods 11, 12) such that a recess 13' formed in said locking pin 13 mates with the switch assembly 15, in such a manner that the latter confirms a correct position of the switch.
  • the same thing happens as a result of the mating interaction between the control rods 11, 12, the right-hand locking pin 14 and the switch assembly 16.
  • the locking pins 13, 14 are also provided with locking heads 17, 18, which are intended to mate with locking recesses 19, 20 in the moving rods 8 and 9, respectively. Again in the position that is shown in Fig. 1, the locking head 17 of the left-hand locking pin 13 engages in the locking recess 19 of the left-hand moving rod 8, thus securing the aforesaid position of the switch (and the corresponding positions of the tongues).
  • the point regulator 5 also comprises a driving member 21, in the form of a nut that is fixed to a driven screw shaft 22 in the illustrated embodiment.
  • the nut 21 can be moved to and fro in Fig. 1 by rotating the screw shaft 22 by means of a motor 23.
  • a connecting member 24 is driven in the same direction, in a manner yet to be described hereinafter, which connecting member in turn causes the moving rods 8 and 9 to move in the same direction.
  • the moving rods 8 and 9 will likewise move to the right and the tongue 4 will come to abut against the associated rail 2, whilst the opposite tongue 3 will be moved away from the associated rail 1.
  • Two hooks 25, 26, which are pivot-mounted to the connecting member 24 by means of a pivot 27, provide the connection between the nut 21 and the connecting member 24.
  • the connecting member 24 is provided with a recess 28 at its upper side, in which two shoulders 29 and 30 of the moving rods 8 and 9 engage.
  • the combined width of the shoulders 29 and 30 is smaller than the total width of the recess 28. The reason for this will become apparent hereinafter.
  • Fig. 2a shows the starting position, which corresponds to Fig. 1.
  • the right-hand hook 26 is in an engaging position, in which said hook engages a shoulder 31 of the nut 21.
  • Rotation of the screw shaft 22 causes the nut 21 to move to the right, with the shoulder 31 carrying along the connecting member 24 via the hook 26.
  • the start of said movement is shown in Fig. 2b. Because the width of the recess 28 (see Fig. 1) allows limited movement of the connecting member 24 with respect to the moving rods 8, 9, said moving rods 8 and 9 will initially remain stationary, also because the locking pin 13 is still in a locked position (with the locking heads 17 present in the locking recess 19).
  • An ascending curved track 32 is formed in the connecting member 24, which can mate with a follow-on roller 33 mounted on the left-hand locking pin 13.
  • the follow-on roller 33 is moved upwards along the curved track 32, causing the locking head 17 to move out of the locking recess 19 of the left-hand moving rod 8. This process is nearly complete in Fig. 2b.
  • Fig. 2e shows a position in which the right-hand tongue 4 has practically reached the associated rail 2.
  • Fig. 2f the right-hand tongue abuts against the associated rail 2, and the co-operation between a follow-on roller 34 connected to the right-hand locking pin 14 and a second curved track 35 of the connecting member 24 causes the right-hand locking pin 14 move downwards to a locked position, in which the locking head 18 of the locking pin 14 engages in the locking recess 20 of the moving rod 9.
  • the switch is now locked in the new position.
  • the left-hand locking hook 25 and the left-hand locking pin 13 mate (an example of such mating interaction will be explained hereinafter with reference to Figs. 4 and 5).
  • the left-hand locking hook 25 occupies a release position (such that movement of the connecting member 24 will not lead to the hook 25 in question engaging the corresponding shoulder 36 of the nut 21 in said release position) in this position of the switch as a result of said mating interaction.
  • Fig. 3a shows a situation which corresponds to the situation that is shown in Fig. 1 and Fig. 2a.
  • the left-hand hook 25 is in a release position, in which it cannot mate with the shoulder 36 of the nut 21.
  • a force is exerted on the right-hand tongue 4, which is thus forced to move in the direction of the associated rail 2.
  • the moving rod 9 is likewise moved to the right.
  • the moving rod 8 is still locked in position by the locking pin 13 and cannot move in the same direction, therefore.
  • connection 10 between the moving rods 8 and 9 will be released when a specific force is exceeded, so that initially only the moving rod 9 moves to the right.
  • This situation is shown in Fig. 3b.
  • the left-hand locking pin 13 engages in the right-hand control rod 12 with some play, which control rod can thus move to the right already as well as a result of said trailing of the switch, before the locking pin 13 has reached its unlocked position (the same applies in the other position of the switch, of course with regard to the right-hand locking pin 14 and the left-hand control rod 11.
  • the moving rod carries along the connecting member 24 to the right with its shoulder 30. Since the hook 25 is in its lifted release position, the hook can pass the stationary nut 21. The width of the recess 28 in the nut 21 allows movement of the connecting member 24, whilst the moving rod 8 initially remains stationary.
  • the curved track 32 thereof causes the follow-on roller 33 and the locking pin 13 to move upwards to the unlocked position.
  • Fig. 3 shows the situation just before said unlocked position is reached.
  • the right-hand tongue 4 is the first tongue that substantially reaches its new position (Fig. 3e), after which the built-up velocity of the moving rod 8 and the tongue 4 causes the other tongue 3 to move further to the right as well until the moving rods 8 and 9 have taken up their original positions relative to each other again, in which position the connection 10 between the two moving rods 8 and 9 is restored (Fig. 3f). After this, or just before this, the locking head 18 of the right-hand locking pin 14 enters the locking recess 20 of the right-hand moving rod 9, the switch having reached its new position, in which position it is locked.
  • a tension in the tongue 3 i.e. a force to the left which the tongue 3 exerts on the moving rods 8 as a result of its tendency to return to its neutral position, the tongue 3 behaving like a leaf spring
  • a neutral position corresponds to the closed position or, if said trailing of the switch takes place slowly and the maximum distance (the thickness of the wheel flange of a passing track vehicle) over which the track vehicle can drive the tongue does not provide sufficient energy
  • the connection may not be restored, so that said restoring of the connection will have to take place during restoration of a normal situation as will be described in more detail hereinafter.
  • the nut 21 To restore a normal situation, the nut 21 must be moved to the right by driving the screw shaft 22 to the right until the hooks 25, 26 and the nut 21 can mate again.
  • the hooks 25 and 26 are pivot-mounted on a pin 27, which is fixed to the connecting member 24.
  • Each hook actuating element 37, 38 supports a pin 41, which engages in an elongated slot 42 in each hook 25, 26.
  • the two hook actuating elements 37, 38 are loaded by a tension spring 43 in the direction of a rotated position as occupied by the right-hand hook actuating element 38 in Fig. 4.
  • rotation of a hook actuating element 37, 38 about its respective pivot 39, 40 results in rotation of the hook 25, 26 about the pin 27.
  • two catches 44 and 45 are furthermore used, which catches can rotate about pivots 46 and 47, which are likewise fixed to the connecting member 24.
  • the catches are interconnected by a tension spring 48, which attempts to rotate the left-hand catch 44 in clockwise direction about the associated pivot and which attempts to rotate the right-hand catch 45 in anti-clockwise direction about the associated pivot 47.
  • a tension spring 48 which attempts to rotate the left-hand catch 44 in clockwise direction about the associated pivot and which attempts to rotate the right-hand catch 45 in anti-clockwise direction about the associated pivot 47.
  • a tension spring 48 which attempts to rotate the left-hand catch 44 in clockwise direction about the associated pivot and which attempts to rotate the right-hand catch 45 in anti-clockwise direction about the associated pivot 47.
  • a curved member 49 which can mate with the catches 44 and 45.
  • the curved member 49 will rotate the left-hand catch 44 in anti-clockwise direction, seen in Fig.
  • a position of a hook actuating element as shown in Fig. 4 for the right-hand hook actuating element 38 is very reliable and not sensitive to outside influences, because the force exerted on the right-hand hook 26 cannot result in rotation of the right-hand hook actuating element 38, since the transmission of the forces between the elongated slot 42 in question and the pin 41 takes place in a direction substantially through the pivot 40 of the right-hand hook actuating element 38. It is highly improbable, therefore, that external shocks or vibrations will lead to the hook 26 unintentionally becoming detached from the shoulder 31 as a result of rotating in upward direction. The same applies to the left-hand hook 25, of course, when said hook is in the position in which it engages the left-hand shoulder 36 of the nut 21.
  • Fig. 5a shows a position which corresponds to the position that is shown in Fig. 4 and Fig. 1.
  • the locking pin 13 that is shown in Fig. 1 is in its locked position, so that the follow-on roller 33 thereof has rotated the hook actuating element 37, and thus the left-hand hook 25, to the release position in the manner described above.
  • the right-hand moving rod 9 will in the first place exert a force to the right on the connecting member 24.
  • Fig. 5b shows, the connecting member 24 has slightly moved to the right already, and the hook 25 has already passed the shoulder 36.
  • the follow-on roller 33 has released the hook actuating element 37, but rotation of said element is not possible because the hook 25 now rests on the upper side of the nut 21 past the shoulder 36.
  • the right-hand hook actuating element 38 and the right-hand hook 26 remain in their original position.
  • the nut 21 with the shoulder 31 can move past the hook 25 during resetting (sees Fig. 5e), after which the curved member 49 will eventually engage the catch 44 and release the hook actuating element 37, which subsequently will pivot under the influence of the force exerted by the tension spring 43, causing the left-hand hook 25 to rotate upwards.
  • the left-hand hook 25 can mate with the left-hand shoulder 36 of the nut 21 again in that case.
  • Fig. 5d and Fig. 5 show a position of the connecting member 24 that substantially corresponds to the fully trailed position of the switch, i.e. a position in which, referring to Fig. 3f, the right-hand tongue 4 has come to abut against the associated rail 2.
  • the right-hand locking pin 14 will move to the locked position, in which the follow-on roller 34 thereof has moved downwards along the curved track 34 of the connecting member 24 and will engage the right-hand hook actuating element 38 so as to rotate said element against the force of the tension spring 43, during which movement the right-hand hook 26 will also be pivoted about the pivot 27.
  • the nut 21 has been reset as well (fully moved to the right in Fig. 5e)
  • a situation that is the mirror image of the situation in Fig. 5a is eventually obtained.

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  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Train Traffic Observation, Control, And Security (AREA)
EP20040075987 2003-03-31 2004-03-31 Weichenregler Withdrawn EP1470983A1 (de)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
NL1023064 2003-03-31
NL1023064A NL1023064C2 (nl) 2003-03-31 2003-03-31 Wisselsteller.

Publications (1)

Publication Number Publication Date
EP1470983A1 true EP1470983A1 (de) 2004-10-27

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ID=32960319

Family Applications (1)

Application Number Title Priority Date Filing Date
EP20040075987 Withdrawn EP1470983A1 (de) 2003-03-31 2004-03-31 Weichenregler

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EP (1) EP1470983A1 (de)
NL (1) NL1023064C2 (de)

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2006125716A1 (de) * 2005-05-27 2006-11-30 Metall- Und Kunststoffwaren Erzeugungsgesellschaft M.B.H. Antriebssystem für eine schienenweiche
EP1762454A1 (de) * 2005-09-13 2007-03-14 Schwihag Gesellschaft für Eisenbahnoberbau mbH Vorrichtung in einem Weichenstellsystem zum mechanischen Verriegeln einer Weichenzunge
WO2007054038A1 (en) * 2005-11-08 2007-05-18 Dt Vyhybkárna A Mostárna A.S. Lock mechanism

Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB1535002A (en) * 1976-02-19 1978-12-06 Int Standard Electric Corp Switch machine with internal locking
DE2928194B1 (de) * 1979-07-12 1980-10-16 Siemens Ag Weichenantrieb
US6270041B1 (en) * 1997-05-30 2001-08-07 Hanning & Kahl Gmbh & Co. Method for locking moveable point sections

Patent Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB1535002A (en) * 1976-02-19 1978-12-06 Int Standard Electric Corp Switch machine with internal locking
DE2928194B1 (de) * 1979-07-12 1980-10-16 Siemens Ag Weichenantrieb
US6270041B1 (en) * 1997-05-30 2001-08-07 Hanning & Kahl Gmbh & Co. Method for locking moveable point sections

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2006125716A1 (de) * 2005-05-27 2006-11-30 Metall- Und Kunststoffwaren Erzeugungsgesellschaft M.B.H. Antriebssystem für eine schienenweiche
AU2006251241B2 (en) * 2005-05-27 2010-11-25 Voestalpine Signaling Zeltweg Gmbh Drive system for a rail switch
EP1762454A1 (de) * 2005-09-13 2007-03-14 Schwihag Gesellschaft für Eisenbahnoberbau mbH Vorrichtung in einem Weichenstellsystem zum mechanischen Verriegeln einer Weichenzunge
WO2007054038A1 (en) * 2005-11-08 2007-05-18 Dt Vyhybkárna A Mostárna A.S. Lock mechanism

Also Published As

Publication number Publication date
NL1023064C2 (nl) 2004-10-01

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