US3723728A - Crossing frog with a movable frog point - Google Patents

Crossing frog with a movable frog point Download PDF

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Publication number
US3723728A
US3723728A US00102602A US3723728DA US3723728A US 3723728 A US3723728 A US 3723728A US 00102602 A US00102602 A US 00102602A US 3723728D A US3723728D A US 3723728DA US 3723728 A US3723728 A US 3723728A
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US
United States
Prior art keywords
plate
frog
point
frog point
improvement
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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
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US00102602A
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English (en)
Inventor
Hayn E Von
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.)
Butzbacher Weichenbau GmbH
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Butzbacher Weichenbau GmbH
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    • E—FIXED CONSTRUCTIONS
    • E01—CONSTRUCTION OF ROADS, RAILWAYS, OR BRIDGES
    • E01B—PERMANENT WAY; PERMANENT-WAY TOOLS; MACHINES FOR MAKING RAILWAYS OF ALL KINDS
    • E01B7/00—Switches; Crossings
    • E01B7/10—Frogs
    • E01B7/14—Frogs with movable parts

Definitions

  • U.S. Pat. No. 3,521,053 shows a crossing frog with a movable frog point which is moved by means of a driving mechanism, similar to that of railway switches, to alternately come into abutment with the stationary wing rails, and the point is locked in the contact position by means of a locking device similar to the clamp point-locking device of railway switches, wherein dovetail-shaped heads of both clamps of the locking device connected to the point are alternately received in a recess of a sliding drive rod of the driving mechanism (and are thus unlocked and coupled with the driving mechanism) or pressed behind the end of a lock box (and are thus locked).
  • both clamps of the point-locking device are directly joined to the base of the frog point. Under certain conditions, this can result in breakdowns, as the frog point on the one hand and the wing rails on the other hand are subject to longitudinal relative movements in opposite directions as a result of temperature expansion and contraction of the adjoining railway tracks, and these movements result in change of position of the clamps of the point-locking device in the lock boxes. This can result in jamming of the locking device, which must be prevented, and accordingly the lock boxes are manually re-adjusted in accordance with the season of the year in a manner which is known from clamp point-locking devices of the railway switches.
  • the base of the frog point is longitudinally displaceable in a special sliding plate, and the sliding plate is laterally movable with respect to the base plate of the locking device, and both clamps of the point-locking device are pivotably connected to the sliding plate.
  • the frog point is no longer rigidly connected to any parts of the point-locking device, but can freely move in the longitudinal direction of the rail in relation to the locking device, the jamming of the locking device as a result of temperature changes and corresponding movements of the rail is rendered impossible and the need for readjustment of the lock boxes is avoided.
  • the sliding plate is guided between front and rear abutments on the base plate, and the guiding surfaces of the sliding plate and those of the abutments are advantageously shaped so as to form a circular arc corresponding to the angular movement of the frog point during reverse movement of the point.
  • FIG. 1 is a top plan view of a clamp point-locking device with a corresponding portion of the frog point;
  • FIG. 2 is a transverse cross-section as taken along line II-ll of FIG. 1; the wing rails, which are omitted in FIG. 1, being shown.
  • FIGS. 1 and 2 show a crossing frog of a switch which comprises a frog point or middle block 23 which is laterally movable in FIG. 1, left and right, between fixed wing rails 21 and 22.
  • the wing rails are not shown in FIG. 1 for simplification purposes, these wing rails extending longitudinally of the frog point 23 as is conventional and shown .in FIG. 2 of U.S. Pat. No.
  • the frog point 23 is guided in a laterally movable sliding plate 24 such that the point 23 can be moved laterally by lateral movement of plate 24.
  • the frog point 23 is longitudinally movable in sliding plate 24 and consequently can undergo relative movement in opposite directions with respect to the wing rails due to temperature changes.
  • the plate 24 embraces the lower end of the point 23 as seen in FIG. 2 and the plate 24 is suspended from point 23 and requires no additional external support. It is to be understood that the point 23 is freely supported by point rails (not shown) which extend beyond point 23 and are secured at a remote location from point 23 whereby the frog point 23 can be shifted laterally about a center determined by the fixation of the point rails.
  • a reinforcement plate 25 is welded to the lower surface of the point 23 and serves to enlarge the lateral guiding surfaces and thus reduce the surface pressure in view of the high pressures applied to the point during the reversal process and at the time of instantaneous contact with the wing rails.
  • the point 23 is slidably supported on a frame-shaped base plate 26 of a locking device, which plate is rigidly connected to the railway ties 27 and 28.
  • the base plate 26 is provided with two abutment surfaces 29 and 30, between which the sliding plate 24 is supported for lateral movement in relation to the rails 21 and 22. Since the frog point 23 travels along a slightly arcuate path whose center is at the point of fixation of the point rails, the abutment surfaces 29, 30 and the corresponding side surfaces of plate 24 are curved to this arcuate path.
  • Opposed lock boxes 31 and 32 are arranged on the base plate 26, and a continuous sliding rod 33 of a driving mechanism (not shown) slidably and adjustably guided in the lock boxes.
  • Clamps 34 and 35 of the locking device are also adjustably and slidably guidedin the locking boxes 32.
  • the clamps 34 and 35 have outer ends of dovetail shape which may either extend into a recess of the sliding rod 33, as shown for the unlocked clamp 34 in FIG. 1, or they may become hooked behind the edge of the lock box, as shown for the locked clamp 35 at the lock box 32.
  • the clamps are pivotably connected to the sliding plate 24 at their inner ends, so that the clamps can undergo a pivotal movement during passage from the unlocked to the locked position and vice versa, as it is known from the clamp point-locking devices of railway switches and particularly as shown in FIG. 2 of U.S. Pat. No. 3,521,053.
  • the clamps can be directly connected to the sliding plate.
  • adapters 36 and 37 are interposed between respective inner ends of the clamps and the sliding plate as shown in FIG. 2.
  • the adapters are adjustably connected with the sliding plate 24 and pivotably connected to the respective clamps 34 and 35.
  • each adapter is provided with a fork-shaped end and with joint pins 38 and 39.
  • the joint pin 38 is smooth and secured against rotation by means of a longi udinal slot or key, and is retained against falling out by means of a cotter pin, whereas the joint pin 39 is provided with a hexagonal head and is screwed into the respective adapter and secured against loosening by means of a cotter pin in the head.
  • the bore in the clamp receiving the joint pin 38 is provided with a rubber bushing which is vulcanized between two metallic sleeves (not shown). The outer sleeve is press-fit in the clamp, whereas the inner sleeve is secured against rotation on the joint pin by means of a longitudinal slot and key arrangement.
  • This construction serves the purpose of holding the rubber bushing in the unlocked position (intermediate position) stressfree and to apply stress to the bushing in the locked position (contact position), so that a return torque is produced.
  • the ends of the clamps will be biased to enter the recesses of the rod 33,.and, for example, when the rod 33 is moved to the left in FIG. 1 head 35 will enter the recess of the rod and become unlocked from locking box 32.
  • the bore in the adapter receiving the joint pin 39 is provided with an eccentric bushing 41 which can be rotated after loosening of the joint pin 39 and thus permit fine adjustment of the distance between the head of the clamp and the point.
  • a key 42 is driven into the gap. in the fork of the adapter, and the key is secured in position by a metal plate 43 slanted on its both ends.
  • the rod 33 is driven to shift the point 23.
  • the plate 24 is locked in its rightmost position and the point 23 is in abutment with wing rail 22 as seen in FIG. 2.
  • the rod 33 is longitudinally displaced to the left in FIG.
  • the plate 24 serves as a ry, lon itudinal wing rails and is lockable by lock boxes in abu ment positions with the wing rails, an improvement comprising a plate suspended from the frog point and providing relative longitudinal movement therebetween, said plate being freely suspended from the frog point for movement in a lateral direction, said frog point having a base engaged in said plate for relative longitudinal displacement, means coupling the plate with the drive rod to shift the plate and the frog point therewith between the abutment positions with the wing rails and to lock said frog point in the abut-.
  • said coupling means including clamp members coupled to said plate for engaging the drive rod and the lock boxes, means guiding said plate in its movement in a lateral direction, said means guiding the plate comprising a base frame with abutment surfaces engaging said plate, the locking boxes being supported on the base frame, said frog point being adapted to travel in a lateral direction along a curved path, said abutment surfaces and plate being curved in correspondence with the curved path of travel of the frog point between the wing rails.
  • An improvement as claimed in claim 1 comprising means pivotably connecting the clamp members to said plate and providing adjustment of the length of projection of the clamp members from the plate.
  • said means pivotably connecting the clamp members to said plate comprises an adapter pivotably connected to each clamp member and a coupling adjustably securing the clamp member to said plate.
  • said coupling includes a fixable pivot connection between the plate and each clamp member, and an eccentric bushing in said pivot connection.
  • An improvement as claimed in claim 3 comprising means in the pivotable connection between the plate and clamp member for urging the clamp member towards the drive rod.

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Architecture (AREA)
  • Civil Engineering (AREA)
  • Structural Engineering (AREA)
  • Seats For Vehicles (AREA)
  • Chairs For Special Purposes, Such As Reclining Chairs (AREA)
  • Warehouses Or Storage Devices (AREA)
  • Load-Engaging Elements For Cranes (AREA)
  • Clamps And Clips (AREA)
  • Push-Button Switches (AREA)
  • Railway Tracks (AREA)
  • Pivots And Pivotal Connections (AREA)
  • Braking Arrangements (AREA)
US00102602A 1970-01-17 1970-12-30 Crossing frog with a movable frog point Expired - Lifetime US3723728A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DE2002025A DE2002025C3 (de) 1970-01-17 1970-01-17 Herzstück mit beweglicher Spitze

Publications (1)

Publication Number Publication Date
US3723728A true US3723728A (en) 1973-03-27

Family

ID=5759867

Family Applications (1)

Application Number Title Priority Date Filing Date
US00102602A Expired - Lifetime US3723728A (en) 1970-01-17 1970-12-30 Crossing frog with a movable frog point

Country Status (11)

Country Link
US (1) US3723728A (it)
BE (1) BE761532R (it)
DE (1) DE2002025C3 (it)
ES (1) ES385537A1 (it)
FI (1) FI58806C (it)
FR (1) FR2077186A6 (it)
GB (1) GB1330456A (it)
IT (1) IT976360B (it)
LU (1) LU62430A1 (it)
NL (1) NL7016434A (it)
SE (1) SE361504B (it)

Cited By (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3860205A (en) * 1971-12-28 1975-01-14 Elektro Thermit Gmbh Closing device for movable parts in railway frog and crossing areas
WO2004014709A1 (de) * 2002-08-13 2004-02-19 Vae Eisenbahnsysteme Gmbh Weichenantrieb für bewegliche herze
US20060034154A1 (en) * 2004-07-09 2006-02-16 Perry Carl A Rotary pulser for transmitting information to the surface from a drill string down hole in a well
US20130032675A1 (en) * 2010-04-09 2013-02-07 Amurrio Ferrocarril Y Equipos, S.A Locking device for crossings with movable frog point
CN110159090A (zh) * 2019-06-26 2019-08-23 桂林赛普电子科技有限公司 用于人工道岔扳手的智能锁装置及其使用方法
CN113668297A (zh) * 2021-08-16 2021-11-19 燕山大学 一种道岔系统
US11499420B2 (en) 2019-12-18 2022-11-15 Baker Hughes Oilfield Operations Llc Oscillating shear valve for mud pulse telemetry and operation thereof
US11753932B2 (en) 2020-06-02 2023-09-12 Baker Hughes Oilfield Operations Llc Angle-depending valve release unit for shear valve pulser

Families Citing this family (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE3828921C3 (de) * 1988-08-26 2000-10-26 Weichenbau Laeis Gmbh & Co Kg Verfahren zum Herstellen einer Weiche mit Herzstück mit federndbeweglicher Spitze sowie eine Weiche mit Herzstück
DE4305228A1 (de) * 1993-02-19 1994-08-25 Butzbacher Weichenbau Gmbh Herzstück
FR2847916B1 (fr) * 2002-12-03 2006-06-23 Cogifer Coeur de croisement a pointe mobile
GB2417510B (en) * 2004-08-31 2007-09-05 Balfour Beatty Plc Switch

Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3518423A (en) * 1967-02-17 1970-06-30 Oesterr Alpine Montan Crossing frogs for railway points
US3521053A (en) * 1968-06-10 1970-07-21 Pintsch Bamag Ag Crossing frogs for rails of railroad track and the like

Family Cites Families (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CH358825A (de) * 1958-05-09 1961-12-15 Stin Aufschneidbarer Spitzenverschluss an Eisenbahnweichen
CH372339A (de) * 1959-08-10 1963-10-15 Peddinghaus Carl Dan Kg Klammerspitzenverschluss für Weichenzungen
AT250433B (de) * 1964-09-15 1966-11-10 Oesterr Alpine Montan Weichenbetätigungsvorrichtung
DE1272951B (de) * 1966-12-21 1968-07-18 Kloeckner Werke Ag Einfaches Herzstueck mit schwenkbarer Herzstueckspitze

Patent Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3518423A (en) * 1967-02-17 1970-06-30 Oesterr Alpine Montan Crossing frogs for railway points
US3521053A (en) * 1968-06-10 1970-07-21 Pintsch Bamag Ag Crossing frogs for rails of railroad track and the like

Cited By (13)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3860205A (en) * 1971-12-28 1975-01-14 Elektro Thermit Gmbh Closing device for movable parts in railway frog and crossing areas
AU2003237561B2 (en) * 2002-08-13 2009-10-01 Vae Eisenbahnsysteme Gmbh Point machine for movable frogs
WO2004014709A1 (de) * 2002-08-13 2004-02-19 Vae Eisenbahnsysteme Gmbh Weichenantrieb für bewegliche herze
US20050269459A1 (en) * 2002-08-13 2005-12-08 Vae Gmbh Point machine for movable frogs
US7168663B2 (en) 2002-08-13 2007-01-30 Vae Eisenbahnsysteme Gmbh Point machine for movable frogs
CN100465037C (zh) * 2002-08-13 2009-03-04 Vae火车系统有限责任公司 用于活动辙叉的搬道岔传动装置
US20060034154A1 (en) * 2004-07-09 2006-02-16 Perry Carl A Rotary pulser for transmitting information to the surface from a drill string down hole in a well
US20130032675A1 (en) * 2010-04-09 2013-02-07 Amurrio Ferrocarril Y Equipos, S.A Locking device for crossings with movable frog point
US8672274B2 (en) * 2010-04-09 2014-03-18 Amurrio Ferrocarrily y Equipos, S.A. Locking device for crossings with movable frog point
CN110159090A (zh) * 2019-06-26 2019-08-23 桂林赛普电子科技有限公司 用于人工道岔扳手的智能锁装置及其使用方法
US11499420B2 (en) 2019-12-18 2022-11-15 Baker Hughes Oilfield Operations Llc Oscillating shear valve for mud pulse telemetry and operation thereof
US11753932B2 (en) 2020-06-02 2023-09-12 Baker Hughes Oilfield Operations Llc Angle-depending valve release unit for shear valve pulser
CN113668297A (zh) * 2021-08-16 2021-11-19 燕山大学 一种道岔系统

Also Published As

Publication number Publication date
FR2077186A6 (it) 1971-10-22
FI58806C (fi) 1981-04-10
DE2002025B2 (de) 1974-10-24
SE361504B (it) 1973-11-05
BE761532R (fr) 1971-06-16
IT976360B (it) 1974-08-20
DE2002025A1 (de) 1971-11-04
FI58806B (fi) 1980-12-31
LU62430A1 (it) 1971-08-04
DE2002025C3 (de) 1975-06-12
NL7016434A (it) 1971-07-20
GB1330456A (en) 1973-09-19
ES385537A1 (es) 1973-04-16

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