CN218343470U - High-speed magnetic levitation electromechanical braking system - Google Patents
High-speed magnetic levitation electromechanical braking system Download PDFInfo
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- CN218343470U CN218343470U CN202222174477.4U CN202222174477U CN218343470U CN 218343470 U CN218343470 U CN 218343470U CN 202222174477 U CN202222174477 U CN 202222174477U CN 218343470 U CN218343470 U CN 218343470U
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Abstract
The utility model relates to the technical field of vehicle braking systems, in particular to a high-speed magnetic levitation electromechanical braking system, which comprises an electromechanical braking control module, wherein the electromechanical braking control module comprises a braking microcomputer control unit, a motor driving unit and a standby power supply unit; the electromechanical friction braking device comprises four electromechanical brake cylinders, four sets of connecting rod assemblies and two sets of wearing plates; electromechanical friction brake device is controlled to electromechanical braking control module, its advantage lies in: the eddy current braking system effectively avoids a plurality of limitations of eddy current braking under the high-speed condition, and compared with eddy current braking, the electromechanical friction braking system of the high-speed maglev train has the advantages of reducing weight and reducing energy consumption.
Description
Technical Field
The utility model relates to a vehicle braking system technical field is a high-speed magnetic levitation electromechanical braking system particularly.
Background
The reliability and safety of the brake during the running of the high-speed maglev train are particularly important, the brake is a safety line for the operation of the train, and the brake device is an important component of a brake system. The high-speed maglev train is gradually matured and put into use after long-term development, and meanwhile, more and more rigorous researches are also provided aiming at the braking technology of the high-speed maglev train, and the electrically excited eddy current braking magnet which is put into use at present realizes safe braking by utilizing the controllability of the magnet, but has the following defects: (1) The consumed electric energy is large, and the electric energy must be absorbed from a vehicle body power grid; (2) The brake rail generates extremely high heat, and the stability of a line is influenced in a brake dense section; (3) The induced electromagnetic field generated during eddy current braking affects track communication to some extent.
For a high-speed maglev train, along with the improvement of the speed, the adaptability of the eddy current braking technology is also reduced, and under the high-speed condition, the electric power for eddy current braking is increased, the redundancy of a storage battery is overhigh, so that the system weight is overlarge; a large amount of heat is generated in the braking process, and the service time of eddy current braking under the high-speed condition is limited in order to maintain the stability of a line; the braking force characteristics are greatly influenced by the speed, the braking rate in a full speed range is unbalanced, and a train cannot be stopped only by eddy current braking.
SUMMERY OF THE UTILITY MODEL
The utility model aims to convert into mechanical action through the electric energy and produce friction braking force, effectively avoided a great deal of limitation of eddy current braking under the high-speed condition to compare in eddy current braking, high-speed maglev train electromechanical friction braking system has the advantage that lightens weight and reduce the energy consumption.
In order to achieve the above object, a high-speed magnetic levitation electromechanical braking system is designed, comprising: the electromechanical brake control module comprises a brake microcomputer control unit, a motor driving unit and a standby power supply unit; the electromechanical friction braking device comprises four electromechanical brake cylinders, four sets of connecting rod assemblies and two sets of wearing plates; the electromechanical brake control module controls an electromechanical friction brake device.
The utility model discloses still have following preferred technical scheme:
1. the electromechanical brake control module and the train are communicated by adopting Ethernet and hard wire signals, the vehicle Ethernet is adopted for communication under the conventional condition, and the backup of communication is carried out through the hard wire signals under the emergency condition.
2. The standby power supply unit comprises a battery or a battery pack and a power supply management module, realizes the self-management of the charging and discharging of the battery, is provided with a communication interface with the brake microcomputer control unit, receives a control signal and feeds back a state signal.
3. The electromechanical brake cylinder is internally provided with a displacement screw, a locking clutch, a force transmission clutch, a motor component, a speed reducer and a thrust screw, one end of the motor component is connected with the speed reducer to amplify torque, the other end of the speed reducer is connected with the thrust screw to convert rotary motion into translational motion so as to realize high thrust, the other end of the motor component is connected with the displacement screw through the force transmission clutch and the locking clutch, quick clearance elimination is realized when clearance elimination is realized through quick displacement, and the displacement screw is disconnected and locked through the force transmission clutch and the locking clutch after the clearance elimination.
Compared with the prior art, the utility model, its advantage lies in: effectively avoided eddy current braking a great deal of limitations under the high-speed condition to compare in eddy current braking, high-speed maglev train electromechanical friction braking system has the advantage of weight reduction and reduction energy consumption, specifically as follows:
1. the structure is compact, the volume is small, the weight is light, and each vehicle reduces about 200kg relative to eddy current braking;
2. the response is fast;
3. the control performance is good, the precision is high, and the stability and the consistency in the braking process are good;
4. the brake system is easy to maintain, high in brake force redundancy, and good in reliability and fault safety;
5. low energy consumption, cleanness and environmental protection.
Drawings
FIG. 1 is a schematic diagram of the high-speed magnetic levitation electromechanical brake system of the present invention;
FIG. 2 is a schematic structural view of the electromechanical friction braking device of the present invention;
FIG. 3 is a schematic view of the structure of the brake cylinder of the present invention;
in the figure: 1-a brake microcomputer control unit, 2-an electromechanical brake control module, 3-a motor drive unit, 4-a standby power supply unit, 5-an electromechanical brake cylinder, 6-an electromechanical friction brake device, 7-a connecting rod assembly, 8-a wearing plate, 9-a displacement screw, 10-a pressure sensor, 11-a locking clutch, 12-a force transmission clutch, 13-a rotary transformer, 14-a motor assembly, 15-a speed reducer and 16-a thrust screw.
Detailed Description
The present invention will be further described with reference to the accompanying drawings, and the structure and principle of the present invention will be apparent to those skilled in the art. It should be understood that the specific embodiments described herein are merely illustrative of the invention and are not intended to limit the invention.
As shown in fig. 1, the utility model provides a high-speed magnetic levitation electromechanical braking system includes electromechanical braking control module 2 and electromechanical friction brake device 6, electromechanical braking control module 2 includes braking microcomputer control unit 1, motor drive unit 3 and reserve power supply unit 4, electromechanical friction brake device 6 includes four electromechanical brake jar 5 and other mechanical structure constitution.
The brake microcomputer control unit 1 comprises a microprocessor, a power supply, a digital input/output module, an analog input/output module, a relay, a CAN module, a vehicle Ethernet module and other modules, and has the functions of collecting, receiving, transmitting, processing, storing, feeding back and the like of relevant signals.
The brake microcomputer control unit 1 receives an instruction signal given by a driver or an automatic driving system and acquires a braking force signal required by a train from a vehicle and a train bus; the electromechanical braking force required by the cylinders is calculated and distributed, and a braking control signal is transmitted to the motor drive unit 3.
The motor driving unit 3 comprises a common control unit and an emergency control unit, is provided with a CAN bus interface and a hard wire interface, receives a control signal of the braking microcomputer control unit 1 to control the action of a motor braking cylinder, and has the functions of braking, relieving, stage braking relieving and the like.
The brake microcomputer control unit 1 dynamically calculates the magnitude of the needed electromechanical braking force according to the magnitude of the electric braking force, matches the electric braking force with the electromechanical braking force, distributes the braking force of different electromechanical brake cylinders 5 in the electromechanical brake unit, and controls the braking force output by the electromechanical friction brake device 6 to be variable in the braking process through the electromechanical brake control unit.
The electromechanical brake control module 2 is powered by the train under normal conditions, and is automatically switched to be powered by the standby power supply unit 4 under emergency conditions; the electromechanical friction braking device 6 is powered by the electromechanical braking control module 2.
When a certain electric cylinder cannot output enough braking force, the electromechanical brake control module 2 can increase the braking force of other electromechanical brake cylinders 5, so that the brake system can provide enough braking force.
The electromechanical brake control module 2 limits the change rate of the motor current of the electromechanical friction brake device 6, so that the change of the electromechanical brake force meets the requirement of train impact limitation.
The electromechanical friction brake device 6 comprises 4 sets of electromechanical brake cylinders 5, 4 sets of link rods 7 and 2 sets of wear plates 8. The electromechanical brake cylinder 5 is internally provided with a lead screw 9, a clutch 11, a clutch 12, a motor assembly 14, a speed reducer 15 and a lead screw 16, one end of the motor assembly 14 is connected with the speed reducer to amplify torque, the other end of the speed reducer is connected with the lead screw 16 (hereinafter referred to as a thrust lead screw 16) to convert rotary motion into translational motion to realize high thrust, the other end of the motor assembly 14 is connected with the lead screw 9 (hereinafter referred to as a displacement lead screw 9) through the clutch 12 and the clutch 11, rapid clearance elimination is realized through rapid displacement when clearance elimination is realized, the displacement lead screw 9 is disconnected and locked through the matching action of the clutch 12 and the clutch 11 after clearance elimination, the clutch 12 is responsible for power transmission (hereinafter referred to as a force transmission clutch 12), and the other clutch 11 is responsible for locking the action of the lead screw 9 (hereinafter referred to as a locking clutch 11). The drive unit also includes a pressure sensor 10 and a rotary transformer 13.
Two ends of the electromechanical brake cylinder 5 are divided into a thrust end and a displacement end, the displacement end is used for rapidly eliminating a gap, the thrust end generates high thrust to realize a braking effect, and the two ends are controlled to move by matching of an electric cylinder inner clutch and a motor.
When the microcomputer control unit 1 receives a braking signal, the microcomputer control unit 1 controls the power transmission clutch 12 to be switched on and switched off, the locking clutch 11 is switched off and separated, so that the displacement screw 9 can rotate along with the motor assembly 14, and meanwhile, a pushing instruction of the electromechanical brake cylinder 5 is output to the motor driving unit 3, the motor driving unit 3 converts the instruction signal into a voltage and current signal and outputs the voltage and current signal to the motor assembly 14 of the electromechanical brake cylinder 5, so that the voltage and current signal is converted into a voltage and current signal which is pushed out simultaneously by the thrust screw 16 and the displacement screw 9 at two ends of the electromechanical brake cylinder 5, and the linkage assembly 7 is driven to move, so that the wearing plate 8 is clamped, when the microcomputer control unit 1 receives data of the pressure sensor 10 and exceeds a set threshold value, the gap of the electromechanical brake device 6 is eliminated, the microcomputer control unit 1 controls the locking clutch 11 to be switched on and switched off, so that the displacement screw 9 is locked, the microcomputer control unit 1 is converted into a force closed-loop control state, the instruction signal output to the motor driving unit 3 calculates through the received data of the pressure sensor 10, the motor driving unit 3 converts the voltage and current signal into a voltage and current signal to control the motor assembly 14 to rotate, converts the thrust screw 16, converts the thrust force into a clamping force to control state, and accurately control the wearing of the linkage assembly 8 through the wearing plate 8.
When the microcomputer brake unit 1 receives the release signal, the microcomputer control unit 1 keeps the locking clutch 11 powered on and closed, the force transmission clutch 12 is powered off and separated, meanwhile, an electromechanical brake cylinder 5 retraction instruction is output to the motor drive unit 3, the motor drive unit 3 converts the instruction signal into a voltage current signal and outputs the voltage current signal to the electromechanical brake cylinder 5 motor assembly 14, the motor assembly 14 rotates and converts the voltage current signal into a thrust lead screw 16 of the electromechanical brake cylinder 5 to retract, the thrust force is reduced, the connecting rod assembly 7 is driven to move, the wearing plate 8 is loosened, when the microcomputer control unit 1 receives data of the pressure sensor 10 and is lower than a set threshold value, the clamping force of the electromechanical brake device 6 is eliminated, the microcomputer control unit 1 converts the microcomputer control unit into a displacement closed-loop control state, the force transmission clutch 12 is controlled to be powered on and closed, and the locking clutch 11 is powered off and separated, the displacement screw 9 can rotate along with the motor assembly 14, meanwhile, a retraction instruction of the electromechanical brake cylinder 5 is output to the motor driving unit 3, the motor driving unit 3 converts an instruction signal into a voltage current signal and outputs the voltage current signal to the electromechanical brake cylinder 5 and the motor assembly 14, the motor assembly 14 rotates and converts the voltage current signal into a thrust screw 16 and a retraction instruction of the displacement screw at two ends of the electromechanical brake cylinder 5, the connecting rod assembly 7 is driven to move, the wearing plate 8 is loosened, displacement closed-loop control is achieved by the microcomputer control unit 1 through collection of signals of the rotary transformer 13 in the process, when the displacement reaches a target value, namely, the gap of the wearing plate 8 reaches the target value, the microcomputer control unit 1 outputs a stop instruction signal to the motor driving unit 3, the electromechanical brake cylinder 5 stops moving, and the electromechanical friction braking device 6 stops moving.
Claims (4)
1. A high-speed magnetic levitation electromechanical braking system, characterized by comprising:
the electromechanical brake control module comprises a brake microcomputer control unit, a motor driving unit and a standby power supply unit;
the electromechanical friction braking device comprises four electromechanical brake cylinders, four sets of connecting rod assemblies and two sets of wearing plates;
the electromechanical brake control module controls an electromechanical friction brake device.
2. A high speed magnetic levitation electromechanical brake system as recited in claim 1, wherein: the electromechanical brake control module and the train are communicated by Ethernet and hard wire signals.
3. A high speed magnetic levitation electromechanical brake system as recited in claim 1, wherein: the standby power supply unit comprises a battery or a battery pack and a power supply management module, realizes the self-management of battery charging and discharging, is provided with a communication interface with the brake microcomputer control unit, receives a control signal and feeds back a state signal.
4. A high speed magnetic levitation electromechanical brake system as recited in claim 1, wherein: the electromechanical brake cylinder is internally provided with a displacement screw rod, a locking clutch, a force transmission clutch, a motor assembly, a speed reducer and a thrust screw rod, one end of the motor assembly is connected with the speed reducer to amplify torque, the other end of the speed reducer is connected with the thrust screw rod to convert rotary motion into translational motion so as to realize high thrust, the other end of the motor assembly is connected with the displacement screw rod through the force transmission clutch and the locking clutch, quick clearance elimination is realized when clearance elimination is realized through quick displacement, and the displacement screw rod is disconnected and locked through the force transmission clutch and the locking clutch after the clearance elimination.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202222174477.4U CN218343470U (en) | 2022-08-18 | 2022-08-18 | High-speed magnetic levitation electromechanical braking system |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202222174477.4U CN218343470U (en) | 2022-08-18 | 2022-08-18 | High-speed magnetic levitation electromechanical braking system |
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| Publication Number | Publication Date |
|---|---|
| CN218343470U true CN218343470U (en) | 2023-01-20 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202222174477.4U Active CN218343470U (en) | 2022-08-18 | 2022-08-18 | High-speed magnetic levitation electromechanical braking system |
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| Country | Link |
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| CN (1) | CN218343470U (en) |
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- 2022-08-18 CN CN202222174477.4U patent/CN218343470U/en active Active
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| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| CB03 | Change of inventor or designer information |
Inventor after: Ma Tianhe Inventor before: Ni Ming Inventor before: Ma Tianhe Inventor before: Tian Chun Inventor before: Wu Mengling Inventor before: Zhang Chao Inventor before: Cao Jiawei Inventor before: Wang Guozhuang |
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| CB03 | Change of inventor or designer information | ||
| TR01 | Transfer of patent right |
Effective date of registration: 20240116 Address after: 200092 Siping Road 1239, Shanghai, Yangpu District Patentee after: Ma Tianhe Address before: Room 101L, 1st Floor, No. 98, Guokang Road, Yangpu District, Shanghai 200092 Patentee before: Bereker (Shanghai) Rail Transit Technology Co.,Ltd. |
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| TR01 | Transfer of patent right |