GB1130823A - Vehicles having load-dependent braking apparatus - Google Patents

Vehicles having load-dependent braking apparatus

Info

Publication number
GB1130823A
GB1130823A GB268066A GB268066A GB1130823A GB 1130823 A GB1130823 A GB 1130823A GB 268066 A GB268066 A GB 268066A GB 268066 A GB268066 A GB 268066A GB 1130823 A GB1130823 A GB 1130823A
Authority
GB
United Kingdom
Prior art keywords
valve
pressure
axle
loaded
lightest
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
GB268066A
Inventor
Cyril John Stone
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
Priority to GB268066A priority Critical patent/GB1130823A/en
Priority to FR90052A priority patent/FR1507519A/en
Publication of GB1130823A publication Critical patent/GB1130823A/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
    • B60T8/1837—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 load-detecting arrangements
    • B60T8/1856—Arrangements for detecting suspension spring load
    • B60T8/1862—Arrangements for detecting suspension spring load comprising sensors of the type providing a fluid output signal representing the load on the vehicle suspension
    • 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
    • B60T8/1837—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 load-detecting arrangements
    • B60T8/1856—Arrangements for detecting suspension spring load
    • B60T8/1868—Arrangements for detecting suspension spring load comprising sensors of the type providing a mechanical output signal representing the load on the vehicle suspension
    • 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)

Abstract

1,130,823. Fluid-pressure brakes. WEST- ; INGHOUSE BRAKE & SIGNAL CO. Ltd. 8 Dec., 1966 [20 Jan., 1966], No. 2680/66. Heading F2F. In a compressed-air braking system for a rail vehicle load-responsive valves 5, 6 associated respectively with axles 1, 2 of the vehicle are of the self-lapping type adapted to give an output pressure between zero and the input pressure in accordance with axle load, and the valves are arranged in series with one another and with a supply reservoir 18 such that the final output at 22, used to modify the braking of the vehicle, is dependent solely on the effect of the valve associated with the lightest-loaded axle. Each valve comprises a diaphragm system 8 which responds to the degree of deflection of the respective axle spring 3 or 4 and also to pressure at outlet 16 to control the movement of exhaust tube 10, which together with spring- loaded inlet valve 12 constitutes a self-lapping valve assembly, whereby a balance between spring deflection and outlet pressure is achieved in all circumstances in the case of valve 5, and in the case of valve 6 is maintained only when axle 2 is the lightest-loaded axle, in which case pressure is progressively reduced in stages by the two valves. When axle 1 is the lightest loaded, all pressure reduction takes place in the valve 5 and valve 6 remains open. The reduced pressure at 22 is fed to a cylinder 24 where it acts on a spring-loaded piston 25 so as to determine the position of a roller 31 carried by a lever 29 pivoted at 30, the roller acting as a fulcrum for a lever 32 through which a control force, obtained from a brake pipe 40 via the usual relay/emergency valve 37 and a pressureresponsive diaphragm, is transmitted to the movable exhaust tube 47 of a self-lapping valve 47, 48, 50 controlling supply of air from the reservoir 18 to brake cylinder 46. As a result, the control force on the self-lapping valve 47, 48, 50 is determined by a combination of brake pipe pressure and loading of the lightest-loaded axle and is continuously variable in accordance with both factors. Alternatively, the arrangement may be modified so that only two variations of braking effort in accordance with load are possible, e.g. by incorporating toggle mechanism between the piston 25 and the roller 31 which would snap over at a predetermined final output pressure at 22 to move the roller 31 from one to the other of two positions.
GB268066A 1966-01-20 1966-01-20 Vehicles having load-dependent braking apparatus Expired GB1130823A (en)

Priority Applications (2)

Application Number Priority Date Filing Date Title
GB268066A GB1130823A (en) 1966-01-20 1966-01-20 Vehicles having load-dependent braking apparatus
FR90052A FR1507519A (en) 1966-01-20 1967-01-05 Vehicle fitted with a braking device acting according to the load

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GB268066A GB1130823A (en) 1966-01-20 1966-01-20 Vehicles having load-dependent braking apparatus

Publications (1)

Publication Number Publication Date
GB1130823A true GB1130823A (en) 1968-10-16

Family

ID=9743887

Family Applications (1)

Application Number Title Priority Date Filing Date
GB268066A Expired GB1130823A (en) 1966-01-20 1966-01-20 Vehicles having load-dependent braking apparatus

Country Status (2)

Country Link
FR (1) FR1507519A (en)
GB (1) GB1130823A (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0193357A1 (en) * 1985-02-22 1986-09-03 LUCAS INDUSTRIES public limited company Brake pressure control valve

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN113335244B (en) * 2021-07-01 2022-05-03 中车制动系统有限公司 Device and method for adjusting empty and heavy vehicle valves of railway vehicle and brake control device

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0193357A1 (en) * 1985-02-22 1986-09-03 LUCAS INDUSTRIES public limited company Brake pressure control valve

Also Published As

Publication number Publication date
FR1507519A (en) 1967-12-29

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