GB863827A - Improvements relating to variable load fluid pressure operated braking apparatus forvehicles, particularly railway vehicles - Google Patents

Improvements relating to variable load fluid pressure operated braking apparatus forvehicles, particularly railway vehicles

Info

Publication number
GB863827A
GB863827A GB1730158A GB1730158A GB863827A GB 863827 A GB863827 A GB 863827A GB 1730158 A GB1730158 A GB 1730158A GB 1730158 A GB1730158 A GB 1730158A GB 863827 A GB863827 A GB 863827A
Authority
GB
United Kingdom
Prior art keywords
stem
chamber
load
valve
train pipe
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
GB1730158A
Inventor
Jack Washbourn
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.)
Siemens Mobility Ltd
Original Assignee
Westinghouse Brake and Signal Co 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
Application filed by Westinghouse Brake and Signal Co Ltd filed Critical Westinghouse Brake and Signal Co Ltd
Publication of GB863827A publication Critical patent/GB863827A/en
Expired legal-status Critical Current

Links

Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B60—VEHICLES IN GENERAL
    • B60T—VEHICLE BRAKE CONTROL SYSTEMS OR PARTS THEREOF; BRAKE CONTROL SYSTEMS OR PARTS THEREOF, IN GENERAL; ARRANGEMENT OF BRAKING ELEMENTS ON VEHICLES IN GENERAL; PORTABLE DEVICES FOR PREVENTING UNWANTED MOVEMENT OF VEHICLES; VEHICLE MODIFICATIONS TO FACILITATE COOLING OF BRAKES
    • B60T8/00—Arrangements for adjusting wheel-braking force to meet varying vehicular or ground-surface conditions, e.g. limiting or varying distribution of braking force
    • B60T8/18—Arrangements for adjusting wheel-braking force to meet varying vehicular or ground-surface conditions, e.g. limiting or varying distribution of braking force responsive to vehicle weight or load, e.g. load distribution
    • B60T8/1812—Arrangements for adjusting wheel-braking force to meet varying vehicular or ground-surface conditions, e.g. limiting or varying distribution of braking force responsive to vehicle weight or load, e.g. load distribution characterised by the means for pressure reduction
    • B60T8/1831—Arrangements for adjusting wheel-braking force to meet varying vehicular or ground-surface conditions, e.g. limiting or varying distribution of braking force responsive to vehicle weight or load, e.g. load distribution characterised by the means for pressure reduction pressure reducing or limiting valves
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B60—VEHICLES IN GENERAL
    • B60T—VEHICLE BRAKE CONTROL SYSTEMS OR PARTS THEREOF; BRAKE CONTROL SYSTEMS OR PARTS THEREOF, IN GENERAL; ARRANGEMENT OF BRAKING ELEMENTS ON VEHICLES IN GENERAL; PORTABLE DEVICES FOR PREVENTING UNWANTED MOVEMENT OF VEHICLES; VEHICLE MODIFICATIONS TO FACILITATE COOLING OF BRAKES
    • B60T13/00—Transmitting braking action from initiating means to ultimate brake actuator with power assistance or drive; Brake systems incorporating such transmitting means, e.g. air-pressure brake systems
    • B60T13/10—Transmitting braking action from initiating means to ultimate brake actuator with power assistance or drive; Brake systems incorporating such transmitting means, e.g. air-pressure brake systems with fluid assistance, drive, or release
    • B60T13/24—Transmitting braking action from initiating means to ultimate brake actuator with power assistance or drive; Brake systems incorporating such transmitting means, e.g. air-pressure brake systems with fluid assistance, drive, or release the fluid being gaseous
    • B60T13/46—Vacuum systems
    • B60T13/465—Vacuum systems for railway vehicles
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B60—VEHICLES IN GENERAL
    • B60T—VEHICLE BRAKE CONTROL SYSTEMS OR PARTS THEREOF; BRAKE CONTROL SYSTEMS OR PARTS THEREOF, IN GENERAL; ARRANGEMENT OF BRAKING ELEMENTS ON VEHICLES IN GENERAL; PORTABLE DEVICES FOR PREVENTING UNWANTED MOVEMENT OF VEHICLES; VEHICLE MODIFICATIONS TO FACILITATE COOLING OF BRAKES
    • B60T8/00—Arrangements for adjusting wheel-braking force to meet varying vehicular or ground-surface conditions, e.g. limiting or varying distribution of braking force
    • B60T8/18—Arrangements for adjusting wheel-braking force to meet varying vehicular or ground-surface conditions, e.g. limiting or varying distribution of braking force responsive to vehicle weight or load, e.g. load distribution
    • B60T8/1893—Arrangements for adjusting wheel-braking force to meet varying vehicular or ground-surface conditions, e.g. limiting or varying distribution of braking force responsive to vehicle weight or load, e.g. load distribution especially adapted for railway vehicles

Landscapes

  • Engineering & Computer Science (AREA)
  • Transportation (AREA)
  • Mechanical Engineering (AREA)
  • Hydraulic Control Valves For Brake Systems (AREA)
  • Valves And Accessory Devices For Braking Systems (AREA)
  • Braking Arrangements (AREA)
  • Braking Systems And Boosters (AREA)

Abstract

863,827. Fluid pressure brakes. WESTING- HOUSE BRAKE & SIGNAL CO. Ltd. May 29, 1959 [May 30, 1958], No. 17301/58. Class 103 (1). An automatic control valve device, for variable load fluid pressure braking apparatus, particularly vacuum systems having empty and load brake cylinders, comprises a check valve 11 separating train pipe chamber 14 from a chamber 15 connected to the lower chamber of the load brake cylinder, and a diaphragm 16 separating chamber 19 connected to the upper chamber of the load brake cylinder, and an atmospheric chamber 20. The diaphragm 16 carries a sleeve 24 slidable on a post 25 fixed to a partition 22. A stem 28 is slidable in post 25 and partition 22 and abuts an adjustable bolt 31 of a piston 32 movable against spring 36 to an upper position by the vehicle load (partially acting on the piston) approximating to a predetermined value. The diaphragm 16, stem 28 and valve 11 are biased to the shown positions by springs 26, 33, 12 respectively. Balls 34, interposed between the outwardly flared end of sleeve 24 and stem 28, are biased downwardly by spring 35 on to the post 25. On charging of the braking apparatus, the lower chambers of the load brake cylinder is exhaused to the train pipe via valve 11 as is the upper chamber via the hollow end 29 of stem 28 and valve 11. When vacuum in the upper chamber reaches 6 inches of mercury, diaphragm 16 and sleeve 24 are moved up, the balls 34 wedging between sleeve 24 and stem 28 after the sleeve has moved a predetermined distance, to also raise stem 28. If the vehicle load is below the predetermined value, then when upward movement of diaphragm 16 is halted (by engagement with the valve casing) the end 28 is short of valve 11 so isolating the load brake cylinder from flow of air from the train pipe, the brake cylinder chambers remain connected via the hollow stem end 29. When the load is above the predetermined value, the stem 28 is raised by piston 32 before charging and when diaphragm 16 rises, the stem is moved further to open valve 11 to connect the train pipe to the lower chamber of the load brake cylinder. In a modification, the train pipe is connected to chamber 19 and hollow end 29 is modified to be connected to the upper chamber, a choke and small reservoir, arranged between the train pipe and chamber 19, preventing the device being changed from load to empty condition on emergency brake application when the train pipe is connected to atmosphere.
GB1730158A 1960-06-27 1958-05-30 Improvements relating to variable load fluid pressure operated braking apparatus forvehicles, particularly railway vehicles Expired GB863827A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GB2241560A GB923755A (en) 1960-06-27 1960-06-27 Improvements relating to variable load fluid pressure operated braking apparatus forvehicles, particularly railway vehicles

Publications (1)

Publication Number Publication Date
GB863827A true GB863827A (en) 1961-03-29

Family

ID=10179000

Family Applications (2)

Application Number Title Priority Date Filing Date
GB1730158A Expired GB863827A (en) 1960-06-27 1958-05-30 Improvements relating to variable load fluid pressure operated braking apparatus forvehicles, particularly railway vehicles
GB2241560A Expired GB923755A (en) 1960-06-27 1960-06-27 Improvements relating to variable load fluid pressure operated braking apparatus forvehicles, particularly railway vehicles

Family Applications After (1)

Application Number Title Priority Date Filing Date
GB2241560A Expired GB923755A (en) 1960-06-27 1960-06-27 Improvements relating to variable load fluid pressure operated braking apparatus forvehicles, particularly railway vehicles

Country Status (3)

Country Link
DE (1) DE1198404B (en)
GB (2) GB863827A (en)
NL (4) NL239593A (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN106428101A (en) * 2016-11-30 2017-02-22 中车齐齐哈尔车辆有限公司 Railway vehicle and weighing valve thereof

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB1557006A (en) * 1975-07-14 1979-12-05 Girling Ltd Vehicle load sensing arrangements

Family Cites Families (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE602842C (en) * 1931-01-21 1934-09-18 Freins Houplain Soc D Vacuum brake
DE702771C (en) * 1939-10-27 1941-02-15 Knorr Bremse Akt Ges Device for automatic control of the brake cylinder pressure according to the vehicle load

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN106428101A (en) * 2016-11-30 2017-02-22 中车齐齐哈尔车辆有限公司 Railway vehicle and weighing valve thereof

Also Published As

Publication number Publication date
NL265740A (en)
NL111751C (en)
NL106323C (en)
DE1198404B (en) 1965-08-12
NL239593A (en)
GB923755A (en) 1963-04-18

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