GB1506005A – Brake system for a light rail vehicle
– Google Patents
GB1506005A – Brake system for a light rail vehicle
– Google Patents
Brake system for a light rail vehicle
Info
Publication number
GB1506005A
GB1506005A
GB18711/75A
GB1871175A
GB1506005A
GB 1506005 A
GB1506005 A
GB 1506005A
GB 18711/75 A
GB18711/75 A
GB 18711/75A
GB 1871175 A
GB1871175 A
GB 1871175A
GB 1506005 A
GB1506005 A
GB 1506005A
Authority
GB
United Kingdom
Prior art keywords
pressure
control
braking
motor
brake
Prior art date
1974-06-17
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
GB18711/75A
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.)
SPX Corp
Original Assignee
General Signal Corp
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.)
1974-06-17
Filing date
1975-05-05
Publication date
1978-04-05
1974-06-17
Priority claimed from US480441A
external-priority
patent/US3924902A/en
1975-05-05
Application filed by General Signal Corp
filed
Critical
General Signal Corp
1978-04-05
Publication of GB1506005A
publication
Critical
patent/GB1506005A/en
Status
Expired
legal-status
Critical
Current
Links
Espacenet
Global Dossier
Discuss
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
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
B60T13/66—Electrical control in fluid-pressure brake systems
B60T13/665—Electrical control in fluid-pressure brake systems the systems being specially adapted for transferring two or more command signals, e.g. railway systems
B—PERFORMING OPERATIONS; TRANSPORTING
B60—VEHICLES IN GENERAL
B60L—PROPULSION OF ELECTRICALLY-PROPELLED VEHICLES; SUPPLYING ELECTRIC POWER FOR AUXILIARY EQUIPMENT OF ELECTRICALLY-PROPELLED VEHICLES; ELECTRODYNAMIC BRAKE SYSTEMS FOR VEHICLES IN GENERAL; MAGNETIC SUSPENSION OR LEVITATION FOR VEHICLES; MONITORING OPERATING VARIABLES OF ELECTRICALLY-PROPELLED VEHICLES; ELECTRIC SAFETY DEVICES FOR ELECTRICALLY-PROPELLED VEHICLES
B60L15/00—Methods, circuits, or devices for controlling the traction-motor speed of electrically-propelled vehicles
B60L15/20—Methods, circuits, or devices for controlling the traction-motor speed of electrically-propelled vehicles for control of the vehicle or its driving motor to achieve a desired performance, e.g. speed, torque, programmed variation of speed
B60L15/2009—Methods, circuits, or devices for controlling the traction-motor speed of electrically-propelled vehicles for control of the vehicle or its driving motor to achieve a desired performance, e.g. speed, torque, programmed variation of speed for braking
B—PERFORMING OPERATIONS; TRANSPORTING
B60—VEHICLES IN GENERAL
B60L—PROPULSION OF ELECTRICALLY-PROPELLED VEHICLES; SUPPLYING ELECTRIC POWER FOR AUXILIARY EQUIPMENT OF ELECTRICALLY-PROPELLED VEHICLES; ELECTRODYNAMIC BRAKE SYSTEMS FOR VEHICLES IN GENERAL; MAGNETIC SUSPENSION OR LEVITATION FOR VEHICLES; MONITORING OPERATING VARIABLES OF ELECTRICALLY-PROPELLED VEHICLES; ELECTRIC SAFETY DEVICES FOR ELECTRICALLY-PROPELLED VEHICLES
B60L3/00—Electric devices on electrically-propelled vehicles for safety purposes; Monitoring operating variables, e.g. speed, deceleration or energy consumption
B60L3/0023—Detecting, eliminating, remedying or compensating for drive train abnormalities, e.g. failures within the drive train
B60L3/0076—Detecting, eliminating, remedying or compensating for drive train abnormalities, e.g. failures within the drive train relating to braking
B—PERFORMING OPERATIONS; TRANSPORTING
B60—VEHICLES IN GENERAL
B60L—PROPULSION OF ELECTRICALLY-PROPELLED VEHICLES; SUPPLYING ELECTRIC POWER FOR AUXILIARY EQUIPMENT OF ELECTRICALLY-PROPELLED VEHICLES; ELECTRODYNAMIC BRAKE SYSTEMS FOR VEHICLES IN GENERAL; MAGNETIC SUSPENSION OR LEVITATION FOR VEHICLES; MONITORING OPERATING VARIABLES OF ELECTRICALLY-PROPELLED VEHICLES; ELECTRIC SAFETY DEVICES FOR ELECTRICALLY-PROPELLED VEHICLES
B60L3/00—Electric devices on electrically-propelled vehicles for safety purposes; Monitoring operating variables, e.g. speed, deceleration or energy consumption
B60L3/10—Indicating wheel slip ; Correction of wheel slip
B60L3/102—Indicating wheel slip ; Correction of wheel slip of individual wheels
B—PERFORMING OPERATIONS; TRANSPORTING
B60—VEHICLES IN GENERAL
B60L—PROPULSION OF ELECTRICALLY-PROPELLED VEHICLES; SUPPLYING ELECTRIC POWER FOR AUXILIARY EQUIPMENT OF ELECTRICALLY-PROPELLED VEHICLES; ELECTRODYNAMIC BRAKE SYSTEMS FOR VEHICLES IN GENERAL; MAGNETIC SUSPENSION OR LEVITATION FOR VEHICLES; MONITORING OPERATING VARIABLES OF ELECTRICALLY-PROPELLED VEHICLES; ELECTRIC SAFETY DEVICES FOR ELECTRICALLY-PROPELLED VEHICLES
B60L7/00—Electrodynamic brake systems for vehicles in general
B60L7/10—Dynamic electric regenerative braking
B60L7/12—Dynamic electric regenerative braking for vehicles propelled by dc motors
B—PERFORMING OPERATIONS; TRANSPORTING
B60—VEHICLES IN GENERAL
B60L—PROPULSION OF ELECTRICALLY-PROPELLED VEHICLES; SUPPLYING ELECTRIC POWER FOR AUXILIARY EQUIPMENT OF ELECTRICALLY-PROPELLED VEHICLES; ELECTRODYNAMIC BRAKE SYSTEMS FOR VEHICLES IN GENERAL; MAGNETIC SUSPENSION OR LEVITATION FOR VEHICLES; MONITORING OPERATING VARIABLES OF ELECTRICALLY-PROPELLED VEHICLES; ELECTRIC SAFETY DEVICES FOR ELECTRICALLY-PROPELLED VEHICLES
B60L7/00—Electrodynamic brake systems for vehicles in general
B60L7/24—Electrodynamic brake systems for vehicles in general with additional mechanical or electromagnetic braking
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
B60T13/241—Differential pressure systems
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
B60T13/26—Compressed-air systems
B60T13/38—Brakes applied by springs or weights and released by compressed air
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
B60T13/58—Combined or convertible systems
B60T13/585—Combined or convertible systems comprising friction brakes and retarders
B60T13/586—Combined or convertible systems comprising friction brakes and retarders the retarders being of the electric type
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
B60T13/74—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 electrical assistance or drive
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
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
B60T8/32—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 a speed condition, e.g. acceleration or deceleration
B60T8/321—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 a speed condition, e.g. acceleration or deceleration deceleration
B60T8/3235—Systems specially adapted for rail vehicles
B—PERFORMING OPERATIONS; TRANSPORTING
B61—RAILWAYS
B61H—BRAKES OR OTHER RETARDING DEVICES SPECIALLY ADAPTED FOR RAIL VEHICLES; ARRANGEMENT OR DISPOSITION THEREOF IN RAIL VEHICLES
B61H5/00—Applications or arrangements of brakes with substantially radial braking surfaces pressed together in axial direction, e.g. disc brakes
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
F16D—COUPLINGS FOR TRANSMITTING ROTATION; CLUTCHES; BRAKES
F16D55/00—Brakes with substantially-radial braking surfaces pressed together in axial direction, e.g. disc brakes
F16D55/02—Brakes with substantially-radial braking surfaces pressed together in axial direction, e.g. disc brakes with axially-movable discs or pads pressed against axially-located rotating members
F16D55/22—Brakes with substantially-radial braking surfaces pressed together in axial direction, e.g. disc brakes with axially-movable discs or pads pressed against axially-located rotating members by clamping an axially-located rotating disc between movable braking members, e.g. movable brake discs or brake pads
F16D55/224—Brakes with substantially-radial braking surfaces pressed together in axial direction, e.g. disc brakes with axially-movable discs or pads pressed against axially-located rotating members by clamping an axially-located rotating disc between movable braking members, e.g. movable brake discs or brake pads with a common actuating member for the braking members
F16D55/2245—Brakes with substantially-radial braking surfaces pressed together in axial direction, e.g. disc brakes with axially-movable discs or pads pressed against axially-located rotating members by clamping an axially-located rotating disc between movable braking members, e.g. movable brake discs or brake pads with a common actuating member for the braking members in which the common actuating member acts on two levers carrying the braking members, e.g. tong-type brakes
B—PERFORMING OPERATIONS; TRANSPORTING
B60—VEHICLES IN GENERAL
B60L—PROPULSION OF ELECTRICALLY-PROPELLED VEHICLES; SUPPLYING ELECTRIC POWER FOR AUXILIARY EQUIPMENT OF ELECTRICALLY-PROPELLED VEHICLES; ELECTRODYNAMIC BRAKE SYSTEMS FOR VEHICLES IN GENERAL; MAGNETIC SUSPENSION OR LEVITATION FOR VEHICLES; MONITORING OPERATING VARIABLES OF ELECTRICALLY-PROPELLED VEHICLES; ELECTRIC SAFETY DEVICES FOR ELECTRICALLY-PROPELLED VEHICLES
B60L2200/00—Type of vehicles
B60L2200/26—Rail vehicles
B—PERFORMING OPERATIONS; TRANSPORTING
B60—VEHICLES IN GENERAL
B60L—PROPULSION OF ELECTRICALLY-PROPELLED VEHICLES; SUPPLYING ELECTRIC POWER FOR AUXILIARY EQUIPMENT OF ELECTRICALLY-PROPELLED VEHICLES; ELECTRODYNAMIC BRAKE SYSTEMS FOR VEHICLES IN GENERAL; MAGNETIC SUSPENSION OR LEVITATION FOR VEHICLES; MONITORING OPERATING VARIABLES OF ELECTRICALLY-PROPELLED VEHICLES; ELECTRIC SAFETY DEVICES FOR ELECTRICALLY-PROPELLED VEHICLES
B60L2240/00—Control parameters of input or output; Target parameters
B60L2240/10—Vehicle control parameters
B60L2240/12—Speed
B—PERFORMING OPERATIONS; TRANSPORTING
B60—VEHICLES IN GENERAL
B60L—PROPULSION OF ELECTRICALLY-PROPELLED VEHICLES; SUPPLYING ELECTRIC POWER FOR AUXILIARY EQUIPMENT OF ELECTRICALLY-PROPELLED VEHICLES; ELECTRODYNAMIC BRAKE SYSTEMS FOR VEHICLES IN GENERAL; MAGNETIC SUSPENSION OR LEVITATION FOR VEHICLES; MONITORING OPERATING VARIABLES OF ELECTRICALLY-PROPELLED VEHICLES; ELECTRIC SAFETY DEVICES FOR ELECTRICALLY-PROPELLED VEHICLES
B60L2240/00—Control parameters of input or output; Target parameters
B60L2240/40—Drive Train control parameters
B60L2240/42—Drive Train control parameters related to electric machines
B60L2240/423—Torque
B—PERFORMING OPERATIONS; TRANSPORTING
B60—VEHICLES IN GENERAL
B60L—PROPULSION OF ELECTRICALLY-PROPELLED VEHICLES; SUPPLYING ELECTRIC POWER FOR AUXILIARY EQUIPMENT OF ELECTRICALLY-PROPELLED VEHICLES; ELECTRODYNAMIC BRAKE SYSTEMS FOR VEHICLES IN GENERAL; MAGNETIC SUSPENSION OR LEVITATION FOR VEHICLES; MONITORING OPERATING VARIABLES OF ELECTRICALLY-PROPELLED VEHICLES; ELECTRIC SAFETY DEVICES FOR ELECTRICALLY-PROPELLED VEHICLES
B60L2240/00—Control parameters of input or output; Target parameters
B60L2240/40—Drive Train control parameters
B60L2240/46—Drive Train control parameters related to wheels
B60L2240/465—Slip
B—PERFORMING OPERATIONS; TRANSPORTING
B60—VEHICLES IN GENERAL
B60L—PROPULSION OF ELECTRICALLY-PROPELLED VEHICLES; SUPPLYING ELECTRIC POWER FOR AUXILIARY EQUIPMENT OF ELECTRICALLY-PROPELLED VEHICLES; ELECTRODYNAMIC BRAKE SYSTEMS FOR VEHICLES IN GENERAL; MAGNETIC SUSPENSION OR LEVITATION FOR VEHICLES; MONITORING OPERATING VARIABLES OF ELECTRICALLY-PROPELLED VEHICLES; ELECTRIC SAFETY DEVICES FOR ELECTRICALLY-PROPELLED VEHICLES
B60L2270/00—Problem solutions or means not otherwise provided for
B60L2270/10—Emission reduction
B60L2270/14—Emission reduction of noise
B60L2270/145—Structure borne vibrations
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
F16D—COUPLINGS FOR TRANSMITTING ROTATION; CLUTCHES; BRAKES
F16D2125/00—Components of actuators
F16D2125/02—Fluid-pressure mechanisms
F16D2125/026—Pressure-to-pressure converters, e.g. hydropneumatic
Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
Y02T—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO TRANSPORTATION
Y02T10/00—Road transport of goods or passengers
Y02T10/60—Other road transportation technologies with climate change mitigation effect
Y02T10/64—Electric machine technologies in electromobility
Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
Y02T—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO TRANSPORTATION
Y02T10/00—Road transport of goods or passengers
Y02T10/60—Other road transportation technologies with climate change mitigation effect
Y02T10/72—Electric energy management in electromobility
Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
Y02T—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO TRANSPORTATION
Y02T90/00—Enabling technologies or technologies with a potential or indirect contribution to GHG emissions mitigation
Y02T90/10—Technologies relating to charging of electric vehicles
Y02T90/16—Information or communication technologies improving the operation of electric vehicles
Abstract
1506005 Rail vehicle brakes; valves GENERAL SIGNAL CORP 5 May 1975 [17 June 1974] 18711/75 Headings F2F and F2V A braking system for an electrically driven rapid transit rail vehicle having driven and non- driven axles combines dynamic braking (where the drive motors act as generators so braking the axle) on the driven axles with friction braking on both driven and non-driven axles, the latter being controlled by load-responsive proportional braking where the braking effort is dependent on the weight of the vehicle, the system also including a parking brake, an emergency braking system, the latter having separate control and actuation from that of the main system, and an anti-skid system. Friction brake actuation (Fig. 7).-A first hydraulic motor 321 comprising piston 322 in housing 320 operates to apply pads 324 and 325 to disc 314 actuating the brake. A second hydraulic motor 327 comprising piston 326 normally operates to resist spring motor 325 but if there is a sufficient reduction in pressure in the space between piston 326 and rear wall 351, normally maintained by means of check valve 530 at the maximum pressure in hydraulic motor 321, caused by operation of the emergency or parking brake control by opening of magnet valve 301 to vent the pressure in the second fluid motor 327 so that spring motor 325 actuates the brake. Lead screw 359 comprises a mechanical slack adjusting means while hydraulic slack adjusting means 41 is also provided (Fig. 4, not shown). Wheel slip control (Fig. 1).-Wheel slip control 27 receives input signals from slip detection means and sends signals to dump valves 59, 60, 61 which temporarily de-activate the corresponding friction brake until slip ceases. The detection means detect differences in speed between axles and monitor angular acceleration when synchronous slip occurs. Dump valves (Fig. 5).-Dump valve 59 is opened by application of an electrical control signal to winding 270 surrounding armature 271 which is displaced to the right in Fig. 5, displacing spool 262 to the right to open communication between dump chamber 215b and air line 79 and when the electromagnet 270 is deenergized the spool is returned by spring 267. Control valves (Fig. 2).-Control valves 45 comprise four main components:-(i) Electrical torque motor 134 responding to signal variations in control line 19 and exerting a proportional torque on comparator shaft 137. (ii) A pneumatic torque motor 138 applies a torque to shaft 137 resisting that of motor 134, this torque decreasing linearly with the pressure applied to the friction brake system through output line 139a. (iii) Pressure transducer 140 driven by shaft 137 which controls the pressure in pilot passages 141 and 142 according to its angular position. (iv) Supply and exhaust valve assembly 143 regulating the input pressure from line 16a, in accordance with the pilot pressure in passages 141 and 142, to the output 17. The braking system as a whole (Fig. 1) is actuated by logical electronic signals from brake command control which are then converted to pneumatic signals by control valves 45 and 46 and are finally converted to hydraulic pressure signals at converters 38, 39, 40. The particular embodiment described discloses a three-car train of which only the end cars are powered and therefore the centre car has only friction brakes.
GB18711/75A
1974-06-17
1975-05-05
Brake system for a light rail vehicle
Expired
GB1506005A
(en)
Applications Claiming Priority (1)
Application Number
Priority Date
Filing Date
Title
US480441A
US3924902A
(en)
1973-08-31
1974-06-17
Braking system for a light rail vehicle
Publications (1)
Publication Number
Publication Date
GB1506005A
true
GB1506005A
(en)
1978-04-05
Family
ID=23907987
Family Applications (1)
Application Number
Title
Priority Date
Filing Date
GB18711/75A
Expired
GB1506005A
(en)
1974-06-17
1975-05-05
Brake system for a light rail vehicle
Country Status (6)
Country
Link
CA
(1)
CA1025029A
(en)
DE
(1)
DE2526522C3
(en)
FR
(1)
FR2330572A1
(en)
GB
(1)
GB1506005A
(en)
IT
(1)
IT1035939B
(en)
ZA
(1)
ZA752966B
(en)
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*
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江西工埠机械有限责任公司
Braking system for permanent magnet direct drive mechanism, control method and gate opening and closing mechanism
Family Cites Families (10)
* Cited by examiner, † Cited by third party
Publication number
Priority date
Publication date
Assignee
Title
FR619112A
(en)
*
1925-06-04
1927-03-26
Thomson Houston Comp Francaise
Improvements to braking systems, particularly applicable to electric traction trains
GB365069A
(en)
*
1930-10-06
1932-01-06
John Meredith Rubury
Improvements in control gear for hydraulically operated devices and particularly brakes for vehicles
US2317132A
(en)
*
1940-12-31
1943-04-20
Westinghouse Air Brake Co
Brake system
US2323413A
(en)
*
1941-11-21
1943-07-06
Gen Electric
Braking system
US3195309A
(en)
*
1963-03-08
1965-07-20
Bendix Corp
Brake mechanism
US3443842A
(en)
*
1966-10-27
1969-05-13
Westinghouse Air Brake Co
Automated control of railway brake equipment having dynamic and air braking
US3490814A
(en)
*
1967-07-28
1970-01-20
Westinghouse Air Brake Co
Electrically controlled fluid braking system for rapid transit cars
US3536361A
(en)
*
1969-03-14
1970-10-27
Gen Signal Corp
Blending scheme for current responsive railway brake
US3799297A
(en)
*
1971-01-21
1974-03-26
Honeywell Inc
Pneumatic brake system
US3845991A
(en)
*
1973-08-31
1974-11-05
Gen Signal Corp
Brake system for a light rail vehicle
1975
1975-02-19
CA
CA220,410A
patent/CA1025029A/en
not_active
Expired
1975-05-05
GB
GB18711/75A
patent/GB1506005A/en
not_active
Expired
1975-05-07
ZA
ZA00752966A
patent/ZA752966B/en
unknown
1975-06-04
IT
IT49903/75A
patent/IT1035939B/en
active
1975-06-13
DE
DE2526522A
patent/DE2526522C3/en
not_active
Expired
1975-06-17
FR
FR7518848A
patent/FR2330572A1/en
active
Granted
Cited By (14)
* Cited by examiner, † Cited by third party
Publication number
Priority date
Publication date
Assignee
Title
WO2006103636A3
(en)
*
2005-04-01
2007-02-15
Faiveley Transport Italia Spa
Braking system for a railway or tramway vehicle
WO2008092867A1
(en)
*
2007-02-02
2008-08-07
Siemens Aktiengesellschaft
Anti-wear brake management
WO2009056306A1
(en)
*
2007-11-02
2009-05-07
Knorr-Bremse Systeme für Schienenfahrzeuge GmbH
Valve arrangement for controlling a brake system of a parking brake system of a track vehicle
GB2529480B
(en)
*
2014-08-22
2020-11-04
Knorr Bremse Rail Systems Uk Ltd
Valve arrangement
GB2529480A
(en)
*
2014-08-22
2016-02-24
Knorr Bremse Rail Sys Uk Ltd
Valve arrangement
CN108146414A
(en)
*
2018-01-05
2018-06-12
瑞立集团瑞安汽车零部件有限公司
The electronic parking valve and control method of a kind of proportional output
WO2020048714A1
(en)
*
2018-09-07
2020-03-12
Knorr-Bremse Systeme für Schienenfahrzeuge GmbH
Distributed regulator structure for achieving optimised regulator properties and increased valve service life
CN112638729A
(en)
*
2018-09-07
2021-04-09
克诺尔轨道车辆系统有限公司
Distributed regulator architecture for achieving optimized regulator characteristics and improved valve life
JP2021535864A
(en)
*
2018-09-07
2021-12-23
クノル−ブレムゼ ジステーメ フューア シーネンファールツォイゲ ゲゼルシャフト ミット ベシュレンクテル ハフツングKnorr−Bremse Systeme fuer Schienenfahrzeuge GmbH
Distributed regulator structure to achieve optimized regulator characteristics and improved valve life
CN112572387A
(en)
*
2020-12-10
2021-03-30
浙江吉利控股集团有限公司
Brake control system of vehicle, vehicle and brake control method
CN112572387B
(en)
*
2020-12-10
2022-02-01
浙江吉利控股集团有限公司
Brake control system of vehicle, vehicle and brake control method
CN113173147A
(en)
*
2021-04-19
2021-07-27
郑州宇通重工有限公司
Hybrid brake system and hydraulic drive transportation equipment
CN113968204A
(en)
*
2021-10-09
2022-01-25
山东康健汽车配件科技股份有限公司
Automatically controlled auxiliary braking system of ABS relay valve
CN113968204B
(en)
*
2021-10-09
2022-11-04
山东康健汽车配件科技股份有限公司
Automatically controlled auxiliary braking system of ABS relay valve
Also Published As
Publication number
Publication date
DE2526522B2
(en)
1978-12-07
DE2526522A1
(en)
1975-12-18
FR2330572A1
(en)
1977-06-03
ZA752966B
(en)
1976-04-28
FR2330572B1
(en)
1980-05-09
DE2526522C3
(en)
1979-08-09
IT1035939B
(en)
1979-10-20
CA1025029A
(en)
1978-01-24
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Legal Events
Date
Code
Title
Description
1978-08-16
PS
Patent sealed
1988-12-29
PCNP
Patent ceased through non-payment of renewal fee
