CN113548017A - Electric braking system of railway vehicle - Google Patents
Electric braking system of railway vehicle Download PDFInfo
- Publication number
- CN113548017A CN113548017A CN202110812848.4A CN202110812848A CN113548017A CN 113548017 A CN113548017 A CN 113548017A CN 202110812848 A CN202110812848 A CN 202110812848A CN 113548017 A CN113548017 A CN 113548017A
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- China
- Prior art keywords
- brake
- braking
- cylinder
- motor
- wheel
- 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.)
- Pending
Links
- 238000000034 method Methods 0.000 claims description 6
- 230000008569 process Effects 0.000 claims description 6
- 239000000446 fuel Substances 0.000 claims 1
- 238000012544 monitoring process Methods 0.000 claims 1
- 238000005299 abrasion Methods 0.000 abstract description 8
- 230000009471 action Effects 0.000 abstract description 6
- 238000012423 maintenance Methods 0.000 abstract description 4
- 230000002035 prolonged effect Effects 0.000 abstract description 3
- 230000003068 static effect Effects 0.000 abstract description 3
- 239000003921 oil Substances 0.000 description 24
- 230000000694 effects Effects 0.000 description 4
- 239000010720 hydraulic oil Substances 0.000 description 2
- 230000007246 mechanism Effects 0.000 description 2
- 230000006978 adaptation Effects 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000007789 sealing Methods 0.000 description 1
Images
Classifications
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- 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
- B60T1/00—Arrangements of braking elements, i.e. of those parts where braking effect occurs specially for vehicles
- B60T1/02—Arrangements of braking elements, i.e. of those parts where braking effect occurs specially for vehicles acting by retarding wheels
- B60T1/06—Arrangements of braking elements, i.e. of those parts where braking effect occurs specially for vehicles acting by retarding wheels acting otherwise than on tread, e.g. employing rim, drum, disc, or transmission or on double wheels
- B60T1/062—Arrangements of braking elements, i.e. of those parts where braking effect occurs specially for vehicles acting by retarding wheels acting otherwise than on tread, e.g. employing rim, drum, disc, or transmission or on double wheels acting on transmission parts
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- 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
- B60T13/745—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 acting on a hydraulic system, e.g. a master cylinder
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- 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
- B60T17/22—Devices for monitoring or checking brake systems; Signal devices
- B60T17/228—Devices for monitoring or checking brake systems; Signal devices for railway vehicles
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B61—RAILWAYS
- B61H—BRAKES OR OTHER RETARDING DEVICES SPECIALLY ADAPTED FOR RAIL VEHICLES; ARRANGEMENT OR DISPOSITION THEREOF IN RAIL VEHICLES
- B61H11/00—Applications or arrangements of braking or retarding apparatus not otherwise provided for; Combinations of apparatus of different kinds or types
- B61H11/06—Applications or arrangements of braking or retarding apparatus not otherwise provided for; Combinations of apparatus of different kinds or types of hydrostatic, hydrodynamic, or aerodynamic brakes
- B61H11/08—Applications or arrangements of braking or retarding apparatus not otherwise provided for; Combinations of apparatus of different kinds or types of hydrostatic, hydrodynamic, or aerodynamic brakes comprising a pump or the like circulating fluid, braking being effected by throttling of the circulation
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Transportation (AREA)
- Physics & Mathematics (AREA)
- Fluid Mechanics (AREA)
- Regulating Braking Force (AREA)
Abstract
The invention discloses an electric braking system of a railway vehicle, which comprises a motor controller, a braking motor, an oil pump, a braking cylinder and braking calipers, wherein the braking cylinder is connected with the motor controller; the motor controller is in signal control connection with a brake motor, the brake motor is in driving connection with an oil pump, the oil pump is in oil supply connection with a brake cylinder through a one-way valve, the brake cylinder is in driving connection with brake calipers, and the brake calipers are in brake connection with wheel shafts of the rail vehicle; the wheel shaft of the rail vehicle is braked by the brake calipers, so that extra abrasion caused by braking of wheels is avoided, and the maintenance cost of the rail vehicle is reduced; when the wheel is judged to be in a locked state under the action of the brake calipers, the output pressure of the brake cylinder to the brake calipers is cut off or reduced, so that the wheel shaft and the wheel are separated from the locked state, the sliding friction of the wheel to the track can be changed into static friction, the braking efficiency is improved, the braking distance is shortened, meanwhile, the abrasion action of the wheel is further reduced, and the service life is prolonged.
Description
Technical Field
The invention relates to the technical field of rail vehicle braking, in particular to an electric braking system of a rail vehicle.
Background
The brakes of the prior railway vehicles have various forms, some brakes brake on wheel rims, and other brakes use caliper brakes similar to automobile disc brake on two side surfaces of wheels of a bogie wheel pair; however, these structures all have a common feature, and no matter what the structure of the brake of the rail vehicle is, the braking power is derived from compressed air; compressed air is usually stored in an air storage tank of each compartment, the parking brake is released by using the compressed air as power, and once the compressed air leaks or the air pressure of the compressed air is insufficient, the problem that the parking brake cannot be released occurs; meanwhile, the wheels are locked by the brake during emergency braking, so that sliding friction is generated between the wheels and the track, the friction force is reduced, the braking effect is poor, and the frequent sliding friction aggravates the abrasion of the wheels, so that the maintenance cost is increased and the running safety of the vehicle is reduced.
Disclosure of Invention
The purpose of the invention is as follows: in order to overcome the defects in the prior art, the invention provides the electric braking system of the railway vehicle, which can effectively reduce the abrasion of wheels and simultaneously improve the braking efficiency and the running stability.
The technical scheme is as follows: in order to achieve the purpose, the electric braking system of the railway vehicle comprises a motor controller, a braking motor, an oil pump, a brake cylinder and brake calipers; the motor controller is in signal control connection with the brake motor, the brake motor is in driving connection with the oil pump, the oil pump is in oil supply connection with the brake cylinder through the one-way valve, the brake cylinder is in driving connection with the brake calipers, and the brake calipers are in brake connection with wheel shafts of the rail vehicles.
Further, the wheel cylinder is connected to the brake caliper in a driving mode through a rotating speed control system, the rotating speed control system monitors the rotating speed of the wheel shaft through a speed sensor, when the rotating speed of the wheel shaft monitored by the speed sensor is lower than a set value in the process of braking the railway vehicle, the rotating speed control system cuts off or reduces the output pressure of the wheel cylinder to the brake caliper, and when the rotating speed of the wheel shaft recovers to reach the set value, the rotating speed control system recovers the output pressure of the wheel cylinder to the brake caliper.
Further, the brake cylinder is provided with a pressure sensor; the pressure sensor signal is connected to the motor controller, when the railway vehicle is in a parking state, when the pressure sensor monitors that the output pressure of the brake cylinder to the brake caliper is lower than a set value, the pressure sensor sends a signal to the motor controller, the motor controller controls the brake motor to be started, the oil pump supplies oil to the brake cylinder, and when the output pressure of the brake caliper reaches the set value, the motor controller controls the brake motor to be closed.
Further, the wheel cylinder is connected to the oil pump through an oil return valve.
Further, the oil pump is provided with an oil storage pot.
Has the advantages that: the rail vehicle electric braking system can effectively reduce the abrasion of wheels, and simultaneously improve the braking efficiency and the running stability, and comprises the following technical effects:
1) the wheel shaft of the rail vehicle is braked by the brake calipers, so that extra abrasion caused by braking of wheels is avoided, and the maintenance cost of the rail vehicle is reduced;
2) the braking condition of the wheel is detected through the rotating speed control system, when the wheel is judged to be in a locking state under the action of the brake caliper, the output pressure of the brake cylinder to the brake caliper is cut off or reduced, so that the wheel shaft and the wheel are separated from the locking state, and the sliding friction of the wheel to a track can be changed into static friction in the braking process, so that the braking efficiency is improved, the braking distance is shortened, meanwhile, the abrasion action on the wheel is further reduced, and the service life is prolonged;
3) when the pressure sensor monitors that the output pressure is lower than the effective value, the brake motor can work again, and the oil pressure is increased to the brake cylinder, so that the brake caliper is restored to the effective output pressure, and the rail vehicle is ensured to be kept stable when being parked;
4) when the brake mechanism is released from a fault, the oil return valve can be manually opened to perform hydraulic oil backflow pressure relief on the brake cylinder, so that the brake effect of the vehicle can be quickly released, and the running stability is improved.
Drawings
FIG. 1 is a block diagram of the present invention.
Detailed Description
The present invention will be further described with reference to the accompanying drawings.
As shown in the attached figure 1: an electric braking system of a railway vehicle comprises a motor controller 1, a braking motor 11, an oil pump 12, a brake cylinder 13 and a brake caliper 2; the motor controller 1 is connected with a brake motor 11 in a signal control mode, the brake motor 11 is connected with an oil pump 12 in a driving mode, the oil pump 12 is connected with a brake cylinder 13 in an oil supply mode through a one-way valve 121, the brake cylinder 13 is connected with a brake caliper 2 in a driving mode, and the brake caliper 2 is connected with a wheel shaft of a railway vehicle in a braking mode; through braking calliper 2 to rail vehicle's shaft braking, avoided leading to producing extra wearing and tearing to wheel braking, reduced rail vehicle's maintenance cost.
The wheel axle rotating speed control system 21 monitors the rotating speed of the wheel axle, when the rotating speed of the wheel axle monitored by the speed sensor is lower than a set value in the process of braking the railway vehicle, the rotating speed control system 21 cuts off or reduces the output pressure of the wheel axle rotating speed control system 13 to the brake caliper 2, and when the rotating speed of the wheel axle recovers to reach the set value, the rotating speed control system 21 recovers the output pressure of the wheel axle rotating speed control system 13 to the brake caliper 2; the rotating speed control system 21 detects the braking condition of the wheel, when the wheel is judged to be in a locking state under the action of the brake caliper 2, the output pressure of the brake cylinder 13 to the brake caliper 2 is cut off or reduced, so that the wheel shaft and the wheel are separated from the locking state, and in the braking process, the sliding friction of the wheel to a track can be changed into static friction, so that the braking efficiency is improved, the braking distance is shortened, meanwhile, the abrasion action of the wheel is further reduced, and the service life is prolonged.
The brake cylinder 13 is provided with a pressure sensor 22; the pressure sensor 22 is in signal connection with the motor controller 1, when the pressure sensor 22 monitors that the output pressure of the brake cylinder 13 to the brake caliper 2 is lower than a set value in a parking state of the railway vehicle, the pressure sensor 22 sends a signal to the motor controller 1, the motor controller 1 controls the brake motor 11 to be started, the oil pump 12 supplies oil to the brake cylinder 13, and when the output pressure of the brake caliper 2 reaches the set value, the motor controller 1 controls the brake motor 11 to be closed; in the parking state, the output pressure of the brake caliper 2 can still be kept within a certain range within the effective time by means of the self-sealing performance of the brake cylinder 13, when the pressure sensor 22 monitors that the output pressure is lower than the effective value, the brake motor 11 can work again, the oil pressure is added to the brake cylinder 13, the brake caliper 2 is enabled to recover to the effective output pressure, and therefore the rail vehicle is guaranteed to be kept stable in the parking process.
The brake cylinder 13 is connected to the oil pump 12 through an oil return valve 131; when the brake mechanism is released from a fault, the oil return valve 131 can be manually opened to perform hydraulic oil backflow pressure relief on the brake cylinder 13, so that the brake effect of the vehicle can be quickly released, and the running stability is improved.
The oil pump 12 is provided with an oil storage pot 122.
The above description is only of the preferred embodiments of the present invention, and it should be noted that: it will be apparent to those skilled in the art that various modifications and adaptations can be made without departing from the principles of the invention and these are intended to be within the scope of the invention.
Claims (5)
1. An electric brake system for a rail vehicle, characterized by: the brake system comprises a motor controller (1), a brake motor (11), an oil pump (12), a brake cylinder (13) and brake calipers (2); the brake system is characterized in that the motor controller (1) is connected to the brake motor (11) in a signal control mode, the brake motor (11) is connected to the oil pump (12) in a driving mode, the oil pump (12) is connected to the brake cylinder (13) in an oil supply mode through the one-way valve (121), the brake cylinder (13) is connected to the brake caliper (2) in a driving mode, and the brake caliper (2) is connected to a wheel shaft of a railway vehicle in a braking mode.
2. A railway vehicle electric brake system as claimed in claim 1, wherein: the brake cylinder (13) is connected to the brake caliper (2) through a rotating speed control system (21) in a driving mode, the rotating speed control system (21) monitors the rotating speed of a wheel shaft through a speed sensor, in the process of braking of a railway vehicle, when the rotating speed of the wheel shaft monitored by the speed sensor is lower than a set value, the rotating speed control system (21) cuts off or reduces the output pressure of the brake cylinder (13) to the brake caliper (2), and when the rotating speed of the wheel shaft recovers to reach the set value, the rotating speed control system (21) recovers the output pressure of the brake cylinder (13) to the brake caliper (2).
3. A railway vehicle electric brake system as claimed in claim 1, wherein: the brake cylinder (13) is provided with a pressure sensor (22); pressure sensor (22) signal connection is in motor controller (1), and under rail vehicle was in the parking state, when pressure sensor (22) monitoring braking wheel cylinder (13) was less than the setting value to brake caliper (2) output pressure, pressure sensor (22) are to motor controller (1) signal, motor controller (1) control start brake motor (11), make oil pump (12) are to braking wheel cylinder (13) fuel feeding, work as when brake caliper (2) output pressure reaches the setting value, motor controller (1) control is closed brake motor (11).
4. A railway vehicle electric brake system as claimed in claim 1, wherein: the brake cylinder (13) is connected to the oil pump (12) through an oil return valve (131).
5. A railway vehicle electric brake system as claimed in claim 1, wherein: the oil pump (12) is provided with an oil storage pot (122).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202110812848.4A CN113548017A (en) | 2021-07-19 | 2021-07-19 | Electric braking system of railway vehicle |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202110812848.4A CN113548017A (en) | 2021-07-19 | 2021-07-19 | Electric braking system of railway vehicle |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN113548017A true CN113548017A (en) | 2021-10-26 |
Family
ID=78131993
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202110812848.4A Pending CN113548017A (en) | 2021-07-19 | 2021-07-19 | Electric braking system of railway vehicle |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN113548017A (en) |
Citations (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US5259667A (en) * | 1990-11-29 | 1993-11-09 | Mazda Motor Corporation | Anti-skid brake system for an automotive vehicle |
| KR20140009811A (en) * | 2012-07-13 | 2014-01-23 | 한국철도기술연구원 | Method and system for braking a railway vehicle |
| CN104401443A (en) * | 2014-11-27 | 2015-03-11 | 浙江春风动力股份有限公司 | Anti-lock braking system of motorcycle |
| CN107218258A (en) * | 2017-06-30 | 2017-09-29 | 南京中车浦镇海泰制动设备有限公司 | A kind of urban track traffic use for brake system hydraulic control unit |
| CN109835318A (en) * | 2017-11-24 | 2019-06-04 | 常州中车铁马科技实业有限公司 | Rail traffic vehicles hydraulic brake system and its control method |
| CN109878483A (en) * | 2019-03-14 | 2019-06-14 | 嘉兴市钧萍轨道交通科技有限公司 | A kind of rail traffic vehicles auxiliary relief device and brake fluid system |
| CN111071286A (en) * | 2018-10-19 | 2020-04-28 | 中车唐山机车车辆有限公司 | Micro-rail vehicle and braking system and braking method thereof |
| CN111775918A (en) * | 2020-07-15 | 2020-10-16 | 哈尔滨哈铁装备制造有限公司 | Hydraulic braking system of road-rail dual-purpose vehicle |
| CN217835601U (en) * | 2021-07-19 | 2022-11-18 | 艾德斯汽车电机无锡有限公司 | Electric braking system of railway vehicle |
-
2021
- 2021-07-19 CN CN202110812848.4A patent/CN113548017A/en active Pending
Patent Citations (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US5259667A (en) * | 1990-11-29 | 1993-11-09 | Mazda Motor Corporation | Anti-skid brake system for an automotive vehicle |
| KR20140009811A (en) * | 2012-07-13 | 2014-01-23 | 한국철도기술연구원 | Method and system for braking a railway vehicle |
| CN104401443A (en) * | 2014-11-27 | 2015-03-11 | 浙江春风动力股份有限公司 | Anti-lock braking system of motorcycle |
| CN107218258A (en) * | 2017-06-30 | 2017-09-29 | 南京中车浦镇海泰制动设备有限公司 | A kind of urban track traffic use for brake system hydraulic control unit |
| CN109835318A (en) * | 2017-11-24 | 2019-06-04 | 常州中车铁马科技实业有限公司 | Rail traffic vehicles hydraulic brake system and its control method |
| CN111071286A (en) * | 2018-10-19 | 2020-04-28 | 中车唐山机车车辆有限公司 | Micro-rail vehicle and braking system and braking method thereof |
| CN109878483A (en) * | 2019-03-14 | 2019-06-14 | 嘉兴市钧萍轨道交通科技有限公司 | A kind of rail traffic vehicles auxiliary relief device and brake fluid system |
| CN111775918A (en) * | 2020-07-15 | 2020-10-16 | 哈尔滨哈铁装备制造有限公司 | Hydraulic braking system of road-rail dual-purpose vehicle |
| CN217835601U (en) * | 2021-07-19 | 2022-11-18 | 艾德斯汽车电机无锡有限公司 | Electric braking system of railway vehicle |
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