EP0332798B1 - Emergency stop device, particularly designed for trains and the like - Google Patents

Emergency stop device, particularly designed for trains and the like Download PDF

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Publication number
EP0332798B1
EP0332798B1 EP88830451A EP88830451A EP0332798B1 EP 0332798 B1 EP0332798 B1 EP 0332798B1 EP 88830451 A EP88830451 A EP 88830451A EP 88830451 A EP88830451 A EP 88830451A EP 0332798 B1 EP0332798 B1 EP 0332798B1
Authority
EP
European Patent Office
Prior art keywords
stop device
emergency stop
frame
train
brakes
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
EP88830451A
Other languages
German (de)
English (en)
French (fr)
Other versions
EP0332798A1 (en
Inventor
Renzo Medeot
Lorenzo Bossan
Corrado Vendramin
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.)
FIP Industriale SpA
Original Assignee
FIP Industriale SpA
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 FIP Industriale SpA filed Critical FIP Industriale SpA
Priority to AT88830451T priority Critical patent/ATE71590T1/de
Publication of EP0332798A1 publication Critical patent/EP0332798A1/en
Application granted granted Critical
Publication of EP0332798B1 publication Critical patent/EP0332798B1/en
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

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Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B61—RAILWAYS
    • B61K—AUXILIARY EQUIPMENT SPECIALLY ADAPTED FOR RAILWAYS, NOT OTHERWISE PROVIDED FOR
    • B61K7/00—Railway stops fixed to permanent way; Track brakes or retarding apparatus fixed to permanent way; Sand tracks or the like
    • B61K7/16—Positive railway stops
    • B61K7/18—Buffer stops
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B61—RAILWAYS
    • B61G—COUPLINGS; DRAUGHT AND BUFFING APPLIANCES
    • B61G11/00—Buffers
    • B61G11/14—Buffers absorbing shocks by mechanical friction action; Combinations of mechanical shock-absorbers and springs

Definitions

  • the present invention relates to an emergency stop device, which has been particularly designed for stopping trains and the like.
  • the task of the present invention is to overcome the above mentioned drawbacks, by providing a train emergency stop device which is able of absorbing or dissipating all of the kinetic energy of the train, so as to reduce to a minimum possible damages to persons in the case of an erroneous braking operation.
  • a main object of the present invention is to provide such a train emergency, stop device which is able of automatically operating while providing a gradual braking effect and which, moreover, can be easily reset to its starting conditions.
  • Another object of the present invention is to provide such a train emergency stop device which is very reliable in operation and, moreover, can be constructed starting from easily available elements and materials.
  • the train emergency stop device has been specifically designed for absorbing or dissipating, by friction, the kinetic energy of a train or the like to be stopped.
  • said kinetic energy is absorbed by applying a force opposite to the movement direction and acting for a given displacement, and said energy corresponds to: where F is the average force which, in the case of the device according to the invention, has an essentially plastic evolution characteristic and substantially corresponds to the F max .
  • the train emergency stop device comprises a wheeled frame, overally indicated at the reference number 1, which is provided with wheels 3 for displacement on the railroad rails 4, and with anti-raising pads 5 acting on the intrados 6 of the rail head in order to balance the tilting moment occurring as the train impacts against the stop device.
  • a pair of buffers indicated at 10, which are preloaded by an inert gas having a resilient type of characteristic curve; as shown, said buffers consist of a central or main body 11 which, at the bottom thereof, is provided with a buffer plate 12 and, at the rear thereof, defines a chamber 13 filled with a pressurized inert gas (see Figure 4).
  • the central body 11 is tightly slidingly housed in the inside of a cylinder 14, closed by a bottom member 15 provided with an axial ridge or projection 16 susceptible to be tight coupled to the chamber 13.
  • annular chamber 18 filled with oil, and adapted to preserve against wear the tightness gaskets 19 operating between said central body 11, cylinder 14 and axial projection 16.
  • the oil chamber 18 is so shaped, at its end portion, to prevent said central body and bottom member 15 from impacting one against the other during the terminal portion of the stroke.
  • the chamber 13 and the gas preloading pressure are so designed as to provide a resilient type of strain-deformation characteristic curve, having the desired stiffness.
  • the chambers 13 communicate with one another through a coupling duct 20.
  • the wheeled frame 1 rotatably supports a rotatable drum 21 which, preferably at an intermedie portion thereof, is formed with a seat or recess 22 for housing a high strength rope 23 which is wound on said drum by overlying coils, said rope 23 being anchored, at one end thereof, at 25, to the ground.
  • engaging seats or recesses 30 adapted for engaging with a plurality of band brakes 31 which, in cross-section, have a friction surface and a supporting surface.
  • Said band brakes at their front ends, are anchored to a fixed point of the wheeled frame whereas, at the other ends thereof, after winding in the respective engaging seats, they are coupled to levers 40 of suitable linkages coupled to an adjustable torque limiting system adapted to operate after the starting of the carriage, as it will become more apparent hereinafter.
  • a driving gear wheel 41 coaxial with the rotatable drum 21, there is provided a driving gear wheel 41, thereon is entrained a chain 42 also entrained on a gear wheel 43 keyed on a shaft 44 thereon there are arranged torque restraining or limiting devices 45 of known type.
  • Each said torque restraining device 45 through a transmission chain 46, is coupled to the lever 40 articulated at a middle point thereof and coupled, at the other end thereof, to the respective band brake.
  • the braking system will transmit to the rotatable drum a constant braking torque, for the overall duration of its movement.
  • the steel rope as above mentioned, is wound by overlaying coils: thus, during the operation, the ratio of the constant braking force diameter and the rope winding diameter will change between a maximum diameter and a minimum diameter; thus, a progressive stop action will be provided, with an increasing value from the starting time to the end time.
  • the buffers will be deformed: according to the invention, the stroke and reaction force of said buffers are designed according to a characteristic curve able of causing the wheeled frame to be brought to the train speed in a gradual manner thereby preventing great inertial reaction forces from being generated at the start of the braking operation.
  • the rope is un-wound and the rotatable drum rotated, in a gradual manner, since the rope is anchored with respect to the rotatable drum.
  • the rotatable drum will not be engaged by the band brakes as far as its rotating speed does not reach, from the rest status, the condition or speed corresponding to the impact speed of a train.
  • the band brakes are actuated for gradually braking and stopping the train.

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Braking Arrangements (AREA)
  • Train Traffic Observation, Control, And Security (AREA)
  • Output Control And Ontrol Of Special Type Engine (AREA)
  • Control Of Vehicles With Linear Motors And Vehicles That Are Magnetically Levitated (AREA)
EP88830451A 1988-03-18 1988-10-26 Emergency stop device, particularly designed for trains and the like Expired - Lifetime EP0332798B1 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
AT88830451T ATE71590T1 (de) 1988-03-18 1988-10-26 Notstop-prellbock, insbesondere fuer eisenbahnen.

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
IT8819857A IT1216159B (it) 1988-03-18 1988-03-18 Dispositivo di arresto d'emergenza, particolarmente studiato per convogli ferroviari.
IT1985788 1988-03-18

Publications (2)

Publication Number Publication Date
EP0332798A1 EP0332798A1 (en) 1989-09-20
EP0332798B1 true EP0332798B1 (en) 1992-01-15

Family

ID=11161840

Family Applications (1)

Application Number Title Priority Date Filing Date
EP88830451A Expired - Lifetime EP0332798B1 (en) 1988-03-18 1988-10-26 Emergency stop device, particularly designed for trains and the like

Country Status (5)

Country Link
EP (1) EP0332798B1 (it)
AT (1) ATE71590T1 (it)
DE (1) DE3867835D1 (it)
ES (1) ES2029349T3 (it)
IT (1) IT1216159B (it)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE10008781A1 (de) * 2000-02-18 2001-09-06 Schuesler Plan Ingenieurgesell Anpralldämpfer

Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN103273944B (zh) * 2013-06-06 2016-10-26 枣庄矿业集团中兴建安工程有限公司 斜巷上变坡防跑车安全闭锁装置
CN112810659A (zh) * 2021-03-05 2021-05-18 华洋通信科技股份有限公司 一种适用于煤矿的物联网装置及使用方法

Family Cites Families (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE182373C (it) *
DE550164C (de) * 1931-05-06 1932-05-09 Schwaebische Huettenwerke Gmbh Gleitender Bremsprellbock
DE807949C (de) * 1950-03-26 1951-07-09 Krauss Maffei Ag Puffereinrichtung fuer Schienenfahrzeuge, insbesondere Huelsenpuffer
GB900220A (en) * 1958-01-22 1962-07-04 Meboe Ltd Improvements in or relating to hydraulic buffers or drawgear
FR2073485B1 (it) * 1969-12-20 1976-03-19 Bergens Mekaniske Ver St
FR2581608B1 (fr) * 1985-05-13 1988-09-30 Mecaneral Heurtoir amortisseur pour le freinage de vehicules se deplacant sur une voie de guidage

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE10008781A1 (de) * 2000-02-18 2001-09-06 Schuesler Plan Ingenieurgesell Anpralldämpfer
DE10008781C2 (de) * 2000-02-18 2002-05-29 Schuesler Plan Ingenieurgesell Anpralldämpfer

Also Published As

Publication number Publication date
EP0332798A1 (en) 1989-09-20
IT1216159B (it) 1990-02-22
ES2029349T3 (es) 1992-08-01
ATE71590T1 (de) 1992-02-15
IT8819857A0 (it) 1988-03-18
DE3867835D1 (de) 1992-02-27

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