GB1374477A - Cushioning arrangement for railroad cars - Google Patents

Cushioning arrangement for railroad cars

Info

Publication number
GB1374477A
GB1374477A GB5072371A GB5072371A GB1374477A GB 1374477 A GB1374477 A GB 1374477A GB 5072371 A GB5072371 A GB 5072371A GB 5072371 A GB5072371 A GB 5072371A GB 1374477 A GB1374477 A GB 1374477A
Authority
GB
United Kingdom
Prior art keywords
piston
impacts
shock absorber
valve element
buff
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
Application number
GB5072371A
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.)
Cardwell Westinghouse Co
Original Assignee
Cardwell Westinghouse Co
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 Cardwell Westinghouse Co filed Critical Cardwell Westinghouse Co
Publication of GB1374477A publication Critical patent/GB1374477A/en
Expired legal-status Critical Current

Links

Classifications

    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16F—SPRINGS; SHOCK-ABSORBERS; MEANS FOR DAMPING VIBRATION
    • F16F13/00—Units comprising springs of the non-fluid type as well as vibration-dampers, shock-absorbers, or fluid springs
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B61—RAILWAYS
    • B61G—COUPLINGS; DRAUGHT AND BUFFING APPLIANCES
    • B61G9/00—Draw-gear
    • B61G9/12—Continuous draw-gear combined with buffing appliances, e.g. incorporated in a centre sill
    • B61G9/16—Continuous draw-gear combined with buffing appliances, e.g. incorporated in a centre sill with fluid springs or fluid shock-absorbers; Combinations thereof
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16F—SPRINGS; SHOCK-ABSORBERS; MEANS FOR DAMPING VIBRATION
    • F16F9/00—Springs, vibration-dampers, shock-absorbers, or similarly-constructed movement-dampers using a fluid or the equivalent as damping medium
    • F16F9/10—Springs, vibration-dampers, shock-absorbers, or similarly-constructed movement-dampers using a fluid or the equivalent as damping medium using liquid only; using a fluid of which the nature is immaterial
    • F16F9/14—Devices with one or more members, e.g. pistons, vanes, moving to and fro in chambers and using throttling effect
    • F16F9/16—Devices with one or more members, e.g. pistons, vanes, moving to and fro in chambers and using throttling effect involving only straight-line movement of the effective parts
    • F16F9/18—Devices with one or more members, e.g. pistons, vanes, moving to and fro in chambers and using throttling effect involving only straight-line movement of the effective parts with a closed cylinder and a piston separating two or more working spaces therein
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16F—SPRINGS; SHOCK-ABSORBERS; MEANS FOR DAMPING VIBRATION
    • F16F9/00—Springs, vibration-dampers, shock-absorbers, or similarly-constructed movement-dampers using a fluid or the equivalent as damping medium
    • F16F9/32—Details
    • F16F9/34—Special valve constructions; Shape or construction of throttling passages
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16F—SPRINGS; SHOCK-ABSORBERS; MEANS FOR DAMPING VIBRATION
    • F16F2230/00—Purpose; Design features
    • F16F2230/10—Enclosure elements, e.g. for protection

Landscapes

  • Engineering & Computer Science (AREA)
  • General Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Fluid-Damping Devices (AREA)
  • Actuator (AREA)

Abstract

1374477 Vehicle buff and draw gear CARDWELL WESTINGHOUSE CO 1 Nov 1971 [20 Nov 1970] 50723/71 Heading B7T [Also in Division F2] Buff and draw gear for a railway vehicle coupling comprises rubber pads 52, 54 (Fig. 1), a coil spring 62, and a double-acting hydraulic piston-cylinder shock absorber (Fig. 8). A flow path from one side of the piston 32 of the shock absorber to the other comprises a throttle, formed by a metering rod 86 co-operating with an orifice 82, in series with a spring-biased valve element 262 which opens in response to a certain pressure difference across the piston to open the flow path. Thus, on impacts in buff, a doubleacting check valve 70, communicating with a flexible-walled reservoir 76, closes and there is no flow across the piston until the pressure in front of the piston builds up and displaces the valve element 262 against its spring 266 to uncover passages 84. Should an abnormal pressure build up a pressure relief valve 72 opens. On impacts in draft, when the pressure builds up, the flow is along passages 84, past the opened valve element 262 and through the orifice 82 metered by the rod 86. Draft impacts are cushioned by the rubber pads 52, 54 acting in parallel with the hydraulic shock absorber. When impacts in either direction have lessened, the valve element 262 closes the passages 84 and the shock absorber is urged back to its neutral position by the coil spring 62 or the rubber pads 52, 54, depending on the direction of movement, liquid seeping past the piston 32 to accommodate the changes in volume of the cylinder chambers.
GB5072371A 1970-11-20 1971-11-01 Cushioning arrangement for railroad cars Expired GB1374477A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
US9138370A 1970-11-20 1970-11-20

Publications (1)

Publication Number Publication Date
GB1374477A true GB1374477A (en) 1974-11-20

Family

ID=22227490

Family Applications (1)

Application Number Title Priority Date Filing Date
GB5072371A Expired GB1374477A (en) 1970-11-20 1971-11-01 Cushioning arrangement for railroad cars

Country Status (10)

Country Link
US (1) US3713546A (en)
AU (1) AU442210B2 (en)
BE (1) BE775584A (en)
BR (1) BR7007717D0 (en)
CA (1) CA944316A (en)
DE (1) DE2157316A1 (en)
FR (1) FR2114910A5 (en)
GB (1) GB1374477A (en)
IT (1) IT941214B (en)
ZA (1) ZA717383B (en)

Families Citing this family (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4122923A (en) * 1977-07-11 1978-10-31 Ace Controls, Inc. Adjustable hydraulic shock absorber
US4601461A (en) * 1984-05-14 1986-07-22 Keystone Industries Inc. Lading protection device
US4787486A (en) * 1986-06-19 1988-11-29 Pneumo Abex Corporation Landing gear mechanism including controlled instroke and rebound damping and stroke overload protection
JP2011194968A (en) * 2010-03-18 2011-10-06 Kawasaki Heavy Ind Ltd Holding structure of coupler adapter for railcar
CN103307192A (en) * 2013-06-19 2013-09-18 江苏振龙减震器有限公司 Rear motorcycle shock absorber with internal spring and external spring
CN109050569B (en) * 2018-09-30 2023-12-22 西南交通大学 Multistage energy absorbing device of rail vehicle

Also Published As

Publication number Publication date
FR2114910A5 (en) 1972-06-30
CA944316A (en) 1974-03-26
AU442210B2 (en) 1973-11-15
US3713546A (en) 1973-01-30
BE775584A (en) 1972-03-16
AU3529671A (en) 1973-06-21
DE2157316A1 (en) 1972-05-31
IT941214B (en) 1973-03-01
ZA717383B (en) 1972-07-26
BR7007717D0 (en) 1973-03-01

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Legal Events

Date Code Title Description
PS Patent sealed [section 19, patents act 1949]
PCNP Patent ceased through non-payment of renewal fee