CN217835601U - Electric braking system of railway vehicle - Google Patents
Electric braking system of railway vehicle Download PDFInfo
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- CN217835601U CN217835601U CN202121637970.4U CN202121637970U CN217835601U CN 217835601 U CN217835601 U CN 217835601U CN 202121637970 U CN202121637970 U CN 202121637970U CN 217835601 U CN217835601 U CN 217835601U
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Abstract
The utility model discloses a rail vehicle electric braking system, which comprises a motor controller, a brake motor, an oil pump, a brake cylinder and brake calipers; 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 utility model relates to a rail vehicle braking technical field especially relates to a rail vehicle electric brake system.
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 the wheels and the track generate sliding friction, on one hand, the friction force is reduced, the braking effect is poor, on the other hand, the frequent sliding friction can aggravate the abrasion of the wheels, and the maintenance cost is increased and the running safety of the vehicle is reduced.
SUMMERY OF THE UTILITY MODEL
Utility model purpose: in order to overcome the not enough that exists among the prior art, the utility model provides a rail vehicle electric braking system can effectively reduce the wearing and tearing of wheel, improves the stability of braking efficiency and operation simultaneously.
The technical scheme is as follows: in order to achieve the above object, the utility model discloses a rail vehicle electric brake system, including motor controller, brake motor, oil pump, brake cylinder and brake caliper; the motor controller signal control is connected in brake motor, brake motor drive is connected in the oil pump, the oil pump passes through the check valve fuel feeding and connects in the brake wheel cylinder, brake wheel cylinder drive is connected in brake caliper, brake caliper braking is connected in rail vehicle's shaft.
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 utility model discloses a rail vehicle electric braking system can effectively reduce the wearing and tearing of wheel, improves the stability of braking efficiency and operation simultaneously, including but not limited to following technological effect:
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 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 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 of 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 structural 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 manner, the brake motor 11 is connected with an oil pump 12 in a driving manner, the oil pump 12 is connected with a brake cylinder 13 in an oil supply manner through a one-way valve 121, the brake cylinder 13 is connected with a brake caliper 2 in a driving manner, and the brake caliper 2 is connected with a wheel shaft of a railway vehicle in a braking manner; 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 a preferred embodiment of the present invention, and it should be noted that: for those skilled in the art, without departing from the principle of the present invention, a plurality of modifications and decorations can be made, and these modifications and decorations should also be regarded as the protection scope of the present invention.
Claims (5)
1. A rail vehicle electric brake system, 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 rail vehicle electric brake system according to claim 1, characterized in that: 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 rail vehicle electric brake system according to claim 1, characterized in that: 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 |
|---|---|---|---|
| CN202121637970.4U CN217835601U (en) | 2021-07-19 | 2021-07-19 | Electric braking system of railway vehicle |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202121637970.4U CN217835601U (en) | 2021-07-19 | 2021-07-19 | Electric braking system of railway vehicle |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN217835601U true CN217835601U (en) | 2022-11-18 |
Family
ID=84009551
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202121637970.4U Active CN217835601U (en) | 2021-07-19 | 2021-07-19 | Electric braking system of railway vehicle |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN217835601U (en) |
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2021
- 2021-07-19 CN CN202121637970.4U patent/CN217835601U/en active Active
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