EP1345803B1 - Agencements d'actionneurs - Google Patents

Agencements d'actionneurs Download PDF

Info

Publication number
EP1345803B1
EP1345803B1 EP01271302A EP01271302A EP1345803B1 EP 1345803 B1 EP1345803 B1 EP 1345803B1 EP 01271302 A EP01271302 A EP 01271302A EP 01271302 A EP01271302 A EP 01271302A EP 1345803 B1 EP1345803 B1 EP 1345803B1
Authority
EP
European Patent Office
Prior art keywords
actuator
sliders
arrangement according
actuation
rods
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
EP01271302A
Other languages
German (de)
English (en)
Other versions
EP1345803A1 (fr
Inventor
Anthony Roger Davies
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.)
SPX International Ltd
Original Assignee
General Signal UK Ltd
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
Priority claimed from GB0031023A external-priority patent/GB0031023D0/en
Priority claimed from GB0102061A external-priority patent/GB0102061D0/en
Application filed by General Signal UK Ltd filed Critical General Signal UK Ltd
Publication of EP1345803A1 publication Critical patent/EP1345803A1/fr
Application granted granted Critical
Publication of EP1345803B1 publication Critical patent/EP1345803B1/fr
Priority to CY20081100364T priority Critical patent/CY1107378T1/el
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

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Classifications

    • BPERFORMING OPERATIONS; TRANSPORTING
    • B61RAILWAYS
    • B61LGUIDING RAILWAY TRAFFIC; ENSURING THE SAFETY OF RAILWAY TRAFFIC
    • B61L5/00Local operating mechanisms for points or track-mounted scotch-blocks; Visible or audible signals; Local operating mechanisms for visible or audible signals
    • B61L5/06Electric devices for operating points or scotch-blocks, e.g. using electromotive driving means
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B61RAILWAYS
    • B61LGUIDING RAILWAY TRAFFIC; ENSURING THE SAFETY OF RAILWAY TRAFFIC
    • B61L5/00Local operating mechanisms for points or track-mounted scotch-blocks; Visible or audible signals; Local operating mechanisms for visible or audible signals
    • B61L5/04Fluid-pressure devices for operating points or scotch-blocks
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B61RAILWAYS
    • B61LGUIDING RAILWAY TRAFFIC; ENSURING THE SAFETY OF RAILWAY TRAFFIC
    • B61L5/00Local operating mechanisms for points or track-mounted scotch-blocks; Visible or audible signals; Local operating mechanisms for visible or audible signals
    • B61L5/10Locking mechanisms for points; Means for indicating the setting of points

Definitions

  • This invention relates to actuator arrangements.
  • a main drive actuator bears against the switch rail close to its free end or toe and acts to push this against the side of the fixed stock rail.
  • the main drive actuator usually includes some form of clamp or latch that positively locks the switch rail against the stock rail. This ensures that the switch rail is held in the correct position even if the force applied by the actuator itself should fall.
  • Such an actuator of a railway switch is disclosed in FR 753077 or FR 2 536 030 .
  • EP-0480303 provides an operating device for railway switches, particularly for high speed lines, comprising one or more switching actuators.
  • an actuator arrangement for moving first and second members, the two members being interconnected with one another by a linkage extending between them, the arrangement including a first actuator arranged to bear against one of the movable members and a locking mechanism coupled with the first actuator, characterised in that there is a second actuator arranged to bear against the other of the movable members and in that the first actuator is configured so that actuation of the first actuator causes both movable members to move in a first direction only and the second actuator is configured so that actuation of the second actuator causes both movable members to move in a second, opposite direction only, the locking mechanism being arranged to allow free movement in the first or second direction caused by actuation of the first or second actuator respectively but to prevent movement in the first or second direction when not caused by actuation of the respective actuator.
  • the actuator arrangement is preferably a hydraulic actuator.
  • the locking mechanism preferably includes two rods movable along their lengths and having respective sliders movable along a channel, the sliders being arranged to apply an outward locking force on walls of the channel when one rod is pushed towards the other.
  • the sliders may have cooperating inclined faces.
  • the first and second members are preferably switch rails.
  • the actuator arrangement is located between a pair of fixed stock rails 1 and 2 and a pair of movable members in the form of switch rails 3 and 4 extending between the stock rails.
  • the switch rails 3 and 4 are linked together by a linkage or stretcher bar 5 extending laterally between the rails.
  • the actuator arrangement includes two conventional hydraulic actuator cylinders 6 and 7 fixed at their bases 8 and 9 to a sleeper 10, or other fixed structure, and extending laterally outwardly in line with one another.
  • the cylinders 6 and 7 are driven by hydraulic fluid from a conventional supply indicated generally by the numeral 11.
  • the pistons 12 and 13 of the cylinders 6 and 7 each support a respective bracket 14 and 15 the outer face of which carries a respective insulating nylon brush 16 and 17.
  • the bushes 16 and 17 bear against the inside faces 18 and 19 of respective switch rails 3 and 4 so that the switch rails can be pushed outwardly by actuation of the appropriate actuator.
  • the actuators 6 and 7 only make an abutting contact with the switch rails 3 and 4, enabling them to be pushed out, and are not attached with the switch rails.
  • the brackets 14 and 15 also support opposite ends of two locking mechanisms 20 and 21 of identical construction.
  • Each locking mechanism 20 and 21 includes a first laterally-extending rod 22 connected at one end with left-hand bracket 14 by a pair of nuts 23.
  • the opposite end of the rod 22 extends about half way across the gap between the two brackets 14 and 15 and carries a slider or wedge 24 having an outer face 25 extending parallel with the rod 22 and an inner face 26 inclined to the axis at an angle of about 30°.
  • the slider 24 may carry a roller 27, as shown in Figure 2 .
  • the locking mechanisms 20 and 21 also include a second laterally-extending rod 28 extending inwardly from the opposite bracket 15. This rod 28 has its outer, right-hand end secured with the bracket 15 by a pair of nuts 29 and its inner, left-hand end carries a second slider wedge 30 shaped to cooperate with the first slider 24.
  • the second slider 30 has an outer face 31 extending parallel with the rod 28 and an inner face 32 inclined parallel with the face 26 of the first slider 24.
  • the two rods 22 and 28 extend in a fixed channel 34 in the sleeper 10 having facing sides 35 against which slide the outer faces 25 and 31 of the two sliders 24 and 30.
  • a pump 40 in the supply unit 11 is operated to that fluid is supplied to the left-hand actuator 6, thereby causing its piston 12 to extend, pushing out its bracket 14 and hence pushing the switch rail 3 against the side of the stock rail 1.
  • the stretcher bar 5 pulls the right-hand switch rail 4 to the left.
  • the inside surface 19 of the right-hand switch rail 4 bears against the bush 17 on the bracket 15 and pushes in the piston 13 so that fluid in the cylinder 7 flows back to the supply unit 11.
  • the two switch rails 3 and 4 therefore, both move over to the left as a pair.
  • the pump 40 is then turned off and a pilot-operated check valve 41 locks the left-hand actuator 6 in this position by preventing flow of fluid out of the actuator until the valve is opened.
  • the locking mechanisms 20 and 21 prevent any movement of the switch rails 3 and 4 to the right as a result of leakage of fluid from the actuator 6. Movement of the switch rail 3 to the right will move the rod 22 slightly inwardly so that the inclined surface 26 of its slider 24 slides along the inclined surface 32 on the slider 30 of the other rod 28. This causes the two sliders 24 and 30 to exert an outward locking force on the surfaces 35 of the channel 34, so that the two sliders wedge or jam with one another.
  • the right-hand rod 28 will not be displaced as a result of movement of the right-hand switch rail 4 to the right because the bracket 15 supporting the rod is not attached to the rail.
  • the switch rails 3 and 4 will remain in the left-hand position until the supply unit 11 supplies fluid to move the piston 13 of the right-hand actuator 7 to the right. This moves the rod 28 and its slider 30 out of jamming engagement with the other slider 24..
  • the roller 27 of the slider 24 reduces friction between the two inclined surfaces 26 and 32 so that these can slide freely over one another.
  • the inclined surfaces 26 and 32 could be provided with a low friction by other means, such as by a suitable coating.
  • the outer surfaces 25 and 31 of the sliders 24 and 30 are given a higher coefficient of friction with the surfaces 35 of the channel 34, such as by roughening, so that they do not slide along the channel when jammed locked.
  • the rods 50 and 51 support a respective slider in the form of a clutch plate 52 and 53 with facing surfaces 54 and 55 having profiled recesses 56 and 57 engaging an eccentric cam 58.
  • the cam 58 is rotatable about an axis transverse to the rods 50 and 51 and is shaped such that a pushing movement of one rod towards the other causes rotation of the cam in a sense tending to force the two clutch plates 52 and 53 outwardly against the walls 59 of the channel 60 in which they slide.
  • Figure 4 shows a locking mechanism having two rods 70 and 71 displaced laterally with respect to one another and having their ends interconnected by a pivoted linkage 72 extending at an angle to the rods.
  • the rods 70 and 71 each have a high friction bearing surface 73 on their outer faces so that movement of the rods longitudinally towards one another causes them to be pushed laterally apart into locking contact with the walls 74 of the channel 75 in which they slide.
  • Figure 5 shows a locking mechanism similar to that of Figures 1 and 2 except that the sliders 124 and 130 have been modified each to have a hook portion 224 and 230 respectively at their ends, directed inwardly of the channel 134 towards one another.
  • a roller 127 is located between opposed faces 126 and 132 of the sliders 124 and 130. It can be seen that, when either rod 122 or 128 is moved axially towards the other it will cause the roller 127 to roll along the surfaces 126 and 132 on the sliders 124 and 130, thereby applying a lateral force pushing them outwardly of the channel 134 and locking the rods in position.
  • the actuator need not be hydraulic but could, for example, be electromechanical or pneumatic.

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Actuator (AREA)
  • Train Traffic Observation, Control, And Security (AREA)
  • Mechanical Control Devices (AREA)
  • Vehicle Body Suspensions (AREA)
  • Manipulator (AREA)
  • Electrophonic Musical Instruments (AREA)
  • Measuring Pulse, Heart Rate, Blood Pressure Or Blood Flow (AREA)
  • Lock And Its Accessories (AREA)
  • Pinball Game Machines (AREA)

Claims (8)

  1. Agencement d'actionneurs pour déplacer des premier et second éléments (3, 4), les deux éléments (3, 4) étant interconnectés l'un avec l'autre par un membre intermédiaire (5) s'étendant entre eux, l'agencement comprenant un premier actionneur (6) configuré pour s'appuyer contre l'un des éléments déplaçables (3) et un mécanisme de verrouillage (20, 21) couplé au premier actionneur (6), caractérisé en ce qu'il y a un second actionneur (7) configuré pour s'appuyer contre l'autre des éléments déplaçables (4) et en ce que le premier actionneur est configuré de sorte que l'actionnement du premier actionneur (6) amène les deux éléments déplaçables (3, 4) à se déplacer seulement dans une première direction et le second actionneur est configuré de sorte que l'actionnement du second actionneur (7) amène les deux éléments déplaçables (3, 4) à se déplacer seulement dans une seconde direction opposée, le mécanisme de verrouillage (20, 21) étant configuré pour permettre un déplacement libre dans la première ou la seconde direction, provoqué par l'actionnement du premier ou du second actionneur (6, 7) respectivement mais pour empêcher le déplacement dans la première ou la seconde direction lorsqu'il n'est pas provoqué par l'actionnement de l'actionneur respectif (6, 7).
  2. Agencement d'actionneurs selon la revendication 1, dans lequel le mécanisme de verrouillage (20, 21) comprend deux tiges (22, 28) déplaçables sur leurs longueurs et ayant des coulisseaux respectifs (24, 30) déplaçables le long d'une rainure (34), les coulisseaux (24, 30) étant configurés pour appliquer une force de verrouillage vers l'extérieur sur les parois de la rainure (34) lorsqu'une tige (22, 28) est poussée vers l'autre.
  3. Agencement d'actionneurs selon la revendication 2, dans lequel les coulisseaux (24, 30) présentent des faces inclinées coopérantes (26, 32).
  4. Agencement d'actionneurs selon la revendication 2, dans lequel les coulisseaux (24, 30) définissent des surfaces inclinées opposées (26, 32) et un galet (27) est prévu entre les faces inclinées des coulisseaux.
  5. Agencement d'actionneurs selon la revendication 4, dans lequel une partie en forme de crochet (224, 230) est prévue à l'extrémité distante de chaque coulisseau (124, 130), les crochets étant configurés pour s'engager avec le galet (127) lorsque l'une ou l'autre tige (122, 128) est éloignée de l'autre.
  6. Agencement d'actionneurs selon la revendication 3, dans lequel un revêtement à faible friction est prévu sur chacune des faces inclinées coopérantes des coulisseaux.
  7. Agencement d'actionneurs selon la revendication 2, dans lequel les coulisseaux présentent des surfaces en regard (54, 55), chacune définissant un évidement profilé (56, 57) et une came excentrique (58) est située entre les surfaces en regard des coulisseaux, chaque extrémité de celle-ci étant en engagement avec l'un desdits évidements profilés (56, 57) respectifs, la came excentrique (58) étant mobile en rotation autour d'un axe s'étendant transversalement aux tiges.
  8. Agencement d'actionneurs selon la revendication 1, dans lequel le mécanisme de verrouillage comprend deux tiges (70, 71) déplaçables sur leurs longueurs dans une rainure (75), les extrémités des tiges (70, 71) étant interconnectées par un membre intermédiaire pivotant (72), les tiges et le membre intermédiaire étant configurés pour appliquer une force de verrouillage vers l'extérieur sur les parois de la rainure (75) lorsqu'une tige est poussée vers l'autre.
EP01271302A 2000-12-19 2001-12-17 Agencements d'actionneurs Expired - Lifetime EP1345803B1 (fr)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CY20081100364T CY1107378T1 (el) 2000-12-19 2008-03-31 Διαταξεις ενεργοποιητου

Applications Claiming Priority (5)

Application Number Priority Date Filing Date Title
GB0031023A GB0031023D0 (en) 2000-12-19 2000-12-19 Actuator arrangements
GB0031023 2000-12-19
GB0102061 2001-01-24
GB0102061A GB0102061D0 (en) 2001-01-24 2001-01-24 Actuator arrangements
PCT/GB2001/005557 WO2002049902A1 (fr) 2000-12-19 2001-12-17 Agencements d'actionneurs

Publications (2)

Publication Number Publication Date
EP1345803A1 EP1345803A1 (fr) 2003-09-24
EP1345803B1 true EP1345803B1 (fr) 2008-02-13

Family

ID=26245452

Family Applications (1)

Application Number Title Priority Date Filing Date
EP01271302A Expired - Lifetime EP1345803B1 (fr) 2000-12-19 2001-12-17 Agencements d'actionneurs

Country Status (10)

Country Link
EP (1) EP1345803B1 (fr)
CN (1) CN1209262C (fr)
AT (1) ATE385936T1 (fr)
AU (1) AU2002222231A1 (fr)
CY (1) CY1107378T1 (fr)
DE (1) DE60132813T2 (fr)
DK (1) DK1345803T3 (fr)
ES (1) ES2300306T3 (fr)
PT (1) PT1345803E (fr)
WO (1) WO2002049902A1 (fr)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US8684318B2 (en) 2010-09-16 2014-04-01 Spx International Limited Mechanical lock

Families Citing this family (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN102358327B (zh) * 2011-09-16 2013-11-06 南南铝业股份有限公司 一种遥控式自动扳道机
JP6050798B2 (ja) * 2014-10-10 2016-12-21 住友ゴム工業株式会社 ゴムストリップの製造装置
FR3059621B1 (fr) * 2016-12-01 2019-07-12 Vossloh Cogifer Mecanisme de deplacement et blocage en position d'au moins une aiguille de rail

Family Cites Families (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR753077A (fr) * 1933-03-24 1933-10-06 Commande d'aiguillage
FR49259E (fr) * 1937-09-07 1939-02-16 Commande d'aiguillage
FR2536030B1 (fr) * 1982-11-16 1986-10-03 Elan Verin electrique, utilisable notamment pour la commande des aiguilles mobiles d'un aiguillage de voie ferree

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US8684318B2 (en) 2010-09-16 2014-04-01 Spx International Limited Mechanical lock

Also Published As

Publication number Publication date
PT1345803E (pt) 2008-05-13
DK1345803T3 (da) 2008-06-16
CN1487893A (zh) 2004-04-07
CN1209262C (zh) 2005-07-06
DE60132813T2 (de) 2009-02-12
WO2002049902A1 (fr) 2002-06-27
ES2300306T3 (es) 2008-06-16
AU2002222231A1 (en) 2002-07-01
ATE385936T1 (de) 2008-03-15
EP1345803A1 (fr) 2003-09-24
CY1107378T1 (el) 2012-12-19
DE60132813D1 (de) 2008-03-27

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