FR2381646A1 - Failsafe braking system for train - has safety catch on hold-off brakes to release them only on full braking - Google Patents

Failsafe braking system for train - has safety catch on hold-off brakes to release them only on full braking

Info

Publication number
FR2381646A1
FR2381646A1 FR7805514A FR7805514A FR2381646A1 FR 2381646 A1 FR2381646 A1 FR 2381646A1 FR 7805514 A FR7805514 A FR 7805514A FR 7805514 A FR7805514 A FR 7805514A FR 2381646 A1 FR2381646 A1 FR 2381646A1
Authority
FR
France
Prior art keywords
hold
brakes
train
brake
failsafe
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.)
Granted
Application number
FR7805514A
Other languages
French (fr)
Other versions
FR2381646B1 (en
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.)
Knorr Bremse AG
Original Assignee
Knorr Bremse AG
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 Knorr Bremse AG filed Critical Knorr Bremse AG
Publication of FR2381646A1 publication Critical patent/FR2381646A1/en
Application granted granted Critical
Publication of FR2381646B1 publication Critical patent/FR2381646B1/fr
Granted 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
    • B60T17/00—Component parts, details, or accessories of power brake systems not covered by groups B60T8/00, B60T13/00 or B60T15/00, or presenting other characteristic features
    • B60T17/18—Safety devices; Monitoring
    • 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
    • B60T17/00—Component parts, details, or accessories of power brake systems not covered by groups B60T8/00, B60T13/00 or B60T15/00, or presenting other characteristic features
    • B60T17/08—Brake cylinders other than ultimate actuators
    • B60T17/083—Combination of service brake actuators with spring loaded brake actuators
    • 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
    • B60T17/00—Component parts, details, or accessories of power brake systems not covered by groups B60T8/00, B60T13/00 or B60T15/00, or presenting other characteristic features
    • B60T17/08—Brake cylinders other than ultimate actuators
    • B60T17/085—Spring loaded brake actuators
    • B60T17/086—Spring loaded brake actuators with emergency release device
    • 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
    • B60T17/00—Component parts, details, or accessories of power brake systems not covered by groups B60T8/00, B60T13/00 or B60T15/00, or presenting other characteristic features
    • B60T17/08—Brake cylinders other than ultimate actuators
    • B60T17/16—Locking of brake cylinders

Landscapes

  • Engineering & Computer Science (AREA)
  • Transportation (AREA)
  • Mechanical Engineering (AREA)
  • Braking Arrangements (AREA)
  • Braking Systems And Boosters (AREA)

Abstract

The train pneumatic brakes are fitted with spring hold off brake cylinders which are held off by the brake supply pressure. Safety catches are provided to hold the hold off brakes in a safe setting to prevent their application during fluctuations in the brake pressure. The catches are released when the brake cylinders are under pressure. The failsafe interlock is improved by only having the catches released when the full brake pressure is applied e.g. to stop the train. In this case the train is stopped with the normal brakes. Subsequent loss of brake pressure, while stationary, brings the hold off brakes into play.
FR7805514A 1977-02-28 1978-02-27 Failsafe braking system for train - has safety catch on hold-off brakes to release them only on full braking Granted FR2381646A1 (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DE19772708629 DE2708629A1 (en) 1977-02-28 1977-02-28 PRESSURE BRAKE DEVICE, IN PARTICULAR FOR RAIL VEHICLES

Publications (2)

Publication Number Publication Date
FR2381646A1 true FR2381646A1 (en) 1978-09-22
FR2381646B1 FR2381646B1 (en) 1983-03-18

Family

ID=6002364

Family Applications (1)

Application Number Title Priority Date Filing Date
FR7805514A Granted FR2381646A1 (en) 1977-02-28 1978-02-27 Failsafe braking system for train - has safety catch on hold-off brakes to release them only on full braking

Country Status (2)

Country Link
DE (1) DE2708629A1 (en)
FR (1) FR2381646A1 (en)

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2523911A1 (en) * 1982-03-25 1983-09-30 Sab Safety device for railway brakes - has ram to release brake cylinder spring on rupture of pipe from auxiliary reservoir.
EP0268183A2 (en) * 1986-11-19 1988-05-25 Knorr Brake Holding Corporation Parking brake system for railway vehicles
US4978178A (en) * 1989-06-09 1990-12-18 General Signal Corporation Automatic self-resetting parking brake

Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB2033514B (en) * 1978-10-10 1982-09-15 Massey Ferguson Perkins Ltd Braking system for the control of fail-safe brakes
DE19502927A1 (en) * 1995-01-31 1996-08-01 Teves Gmbh Alfred Combined service and parking brake

Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2133621A1 (en) * 1971-04-16 1972-12-01 Bendix Corp
FR2211082A5 (en) * 1972-12-15 1974-07-12 Bromsregulator Svenska Ab
FR2259288A1 (en) * 1974-01-30 1975-08-22 Bromsregulator Svenska Ab
FR2305643A1 (en) * 1975-03-27 1976-10-22 Wabco Westinghouse Brake cylinder forming part of brake release unit - has two parts of release unit working together via reversible screw thread

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2133621A1 (en) * 1971-04-16 1972-12-01 Bendix Corp
FR2211082A5 (en) * 1972-12-15 1974-07-12 Bromsregulator Svenska Ab
FR2259288A1 (en) * 1974-01-30 1975-08-22 Bromsregulator Svenska Ab
FR2305643A1 (en) * 1975-03-27 1976-10-22 Wabco Westinghouse Brake cylinder forming part of brake release unit - has two parts of release unit working together via reversible screw thread

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2523911A1 (en) * 1982-03-25 1983-09-30 Sab Safety device for railway brakes - has ram to release brake cylinder spring on rupture of pipe from auxiliary reservoir.
EP0268183A2 (en) * 1986-11-19 1988-05-25 Knorr Brake Holding Corporation Parking brake system for railway vehicles
EP0268183A3 (en) * 1986-11-19 1990-05-02 Knorr Brake Holding Corporation Parking brake system for railway vehicles
US4978178A (en) * 1989-06-09 1990-12-18 General Signal Corporation Automatic self-resetting parking brake

Also Published As

Publication number Publication date
FR2381646B1 (en) 1983-03-18
DE2708629A1 (en) 1978-08-31

Similar Documents

Publication Publication Date Title
ES8206272A1 (en) Emergency brake for presses
SE7401174L (en)
EP0183616A3 (en) Elevator brake and safety
ES391293A1 (en) Disc brake with actuating means and manually releasable adjusting means
GB1285158A (en) Manual release mechanism for emergency and parking brake systems
JPS5547941A (en) Stoppage brake gear
FR2381646A1 (en) Failsafe braking system for train - has safety catch on hold-off brakes to release them only on full braking
ES468060A1 (en) Hydraulic vehicle brake system
FR2238617A1 (en) Pneumatic handbrake for lorry and trailer - with one of three settings unstable to only brake the lorry
ES461880A1 (en) Brake-force distributor for dual-circuit brake systems
ES278814A1 (en) Fluid brake system including a mechanical lock
GB1033118A (en) Improvements in or relating to brake systems
FR2456647A1 (en) Fail=safe hydraulic trailer brake - has standby reservoir on trailer for brakes actuation when normal supply fails
JPS5760923A (en) Method of controlling braking force at starting on upward slope
FR2322036A1 (en) Master brake cylinder with stepped bore - and two different sizes of floating piston for fail safe braking
FR2420463A1 (en) Trailer brake using hydraulic servo on towing unit - has pressure limiter to prevent excessive braking and locking
ES256956A1 (en) Improvements relating to railway vehicle braking systems
ES454406A2 (en) Disc brake
GB1364861A (en) Disc brakes
FR2401811A1 (en) Servo control for trailer brakes - has direct operation from master cylinder with control pressure inversely proportional to servo pressure to allow fine control
FR2336598A1 (en) Vehicle disc brakes with differential control - has mechanical link to brake front wheels through reaction of rear brakes
GB750999A (en) Improvements relating to fluid pressure braking systems
FR2235034A1 (en) Safety brake for a cableway - has support cable and actuating cable with spring loaded brake jaws for main cable
FR2366968A1 (en) Failsafe control for air-brakes - has spring-loaded hold-off brakes which are automatically applied if pressure fails
FR2348837A2 (en) Fail safe protection for train brakes - has time delay operated protection when brakes vented by failure of line

Legal Events

Date Code Title Description
ST Notification of lapse