63results about "Railway braking systems" patented technology

The invention discloses a rack rail trapped rail vehicle and a driving part and a driving assembly thereof. The rack rail trapped rail vehicle comprises a driving disc support; the driving disc assembly is installed on the driving disc support and used for being in meshing transmission with a rack on the rack rail; the driving part is connected with the driving disc assembly and used for driving the pin shaft wheel on the driving disc assembly to rotate; the wheel swing frame assemblies are arranged on the two sides of the lower portion of the driving disc support, and rolling wheels used for being matched with the special-shaped rails on the two sides of the rack rail are arranged on the wheel swing frame assemblies; the first braking device is arranged on the driving disc support and used for clamping the driving disc assembly to achieve working braking of the locomotive; the second braking device is arranged on the wheel swing frame assembly and used for clamping the special-shaped rail to achieve emergency braking of the locomotive; and the speed limiting device is mounted on the driving disc bracket, triggers the first braking device to act when the speed of the locomotive reaches a first preset speed threshold value, and triggers the second braking device to act when the speed detected by the speed limiting device is still greater than zero after the first braking device brakes.

The invention discloses a motor train unit full-electric-drive friction braking system which comprises an electric-drive friction device and a braking control device, the electric-drive friction device is provided with a driving unit, a braking motor, a transmission mechanism, a braking force executing mechanism, an energy storage spring and a locking unit, the energy storage spring has the trend of pushing the transmission mechanism to the braking direction so as to implement emergency braking and can be reversely pushed back to the energy storage position by the transmission mechanism, and the locking unit is connected with a vehicle emergency braking hard wire, receives a control signal of the driving unit and is used for locking or releasing the energy storage spring. When the vehicle emergency braking hard wire loses power and the braking control device breaks down, the locking unit releases the energy storage spring, and the electric drive friction device conducts emergency braking. When the vehicle emergency braking hard wire is electrified, the braking control device has no fault, and the energy storage spring is located at the energy storage position, the locking unit locks the energy storage spring, so that no acting force is generated between the energy storage spring and the transmission mechanism.

The invention discloses a control method for stable operation of a heavy-load combined train. The method is applied to the heavy-load combined train formed by connecting at least two traction locomotives and at least one dragged vehicle in series, and comprises the following steps: when the ramp type of the heavy-load combined train running on the current line is a preset type, before or simultaneously adjusting the working state of an air braking device to be a relieving state, adjusting the working state of the air braking device to be the relieving state; controlling the power braking device of the master control locomotive to increase the power braking force, and increasing the power braking force by the power braking device of the slave control locomotive; when the working state is adjusted to be a relieving state, the initial relieving moment is determined, when the accumulative relieving duration reaches the preset first duration, the power braking force of the power braking device of the master control locomotive is adjusted and reduced, and the power braking force of the power braking device of the slave control locomotive is adjusted and reduced; changes of hook pulling force and hook pressing force of the middle slave control locomotive are reduced, the longitudinal force of the train is controlled within an evaluation index range, and the running safety and stability of the train are improved.

The utility model relates to a multi-mode linkage braking system of a high-speed train, and belongs to the technical field of friction braking. The utility model discloses a multi-mode linkage braking system for a high-speed train. The multi-mode linkage braking system comprises a tread braking unit, a wheel disc braking unit and two axle disc braking units, wherein the tread braking unit and the wheel disc braking unit are arranged on the two sides of a train wheel pair; a shaft disc brake unit is arranged in a form of one-shaft symmetrical double discs. Meanwhile, the tread brake unit is arranged on one side of the axle disc brake cylinder, the wheel disc brake unit is arranged on the opposite side of the tread brake unit, and the wheel track friction increasing mechanism is integrated into the tread brake mechanism, so that space complementation is achieved, and the space is utilized to the maximum extent. According to the utility model, various technologies such as tread braking, wheel disc braking and axle disc braking are combined, and the intelligent control unit is supplemented, so that the braking system can adaptively adjust the braking force according to different working conditions, and high-efficiency braking of a high-speed train under complex and emergency conditions is realized.

The utility model discloses an air-electric interlocking control device, relates to the technical field of brakes, and overcomes the obvious defect that an existing air-electric interlocking control device cannot provide bypass emergency braking pressure required by emergency braking for a whole vehicle. Due to the limitation, the risk of failure of the whole braking system caused by a single fault is increased, and the technical problem that the reliability and the safety of the braking system are insufficient is solved. Comprising an air-electricity interlocking control module. The air-electric interlocking control module comprises a brake cylinder switching valve, a brake cylinder switching electromagnetic valve, an emergency pressurization switching valve, an emergency pressurization electromagnetic valve, a pressure reducing valve, a brake cylinder two-way valve and a cock set. Wherein the brake cylinder switching electromagnetic valve and the brake cylinder switching valve are connected in series, and the brake cylinder switching valve, the brake cylinder two-way valve, the emergency pressurization switching valve and the pressure reducing valve are sequentially connected in series; by means of the design, bypass emergency braking pressure can be provided for emergency braking of the whole vehicle, and redundancy of a braking system is increased.

The invention discloses a new energy locomotive braking reconnection system and a control method thereof. The reconnection system comprises a leading locomotive and an auxiliary locomotive. The leading locomotive is connected with the auxiliary locomotive through a train network cable; the leading locomotive and the auxiliary locomotive are the same in structure and each comprise a brake controller, a train microcomputer system and a brake control module. The brake control module comprises a brake control unit and a brake cylinder control unit; the brake control unit is respectively connected with the brake controller, the train microcomputer system and the brake cylinder control unit; and the train microcomputer system in the leading locomotive is connected with the train microcomputer system in the supplementary locomotive through a train network cable. According to the invention, synchronous and accurate control of air brake reconnection control, hybrid brake reconnection control and brake reconnection of the new energy locomotive is realized.

The present invention discloses an energy-absorbing and anti-collision device for a maglev train and the maglev train. The device comprises: an installation box for installation on the front of the maglev train; a housing connected to the installation box; a detection element disposed in the housing for detecting whether there is an obstacle in front of the maglev train; an electromagnetic device comprising an electromagnet disposed in the housing and a power supply connected to the electromagnet, the power supply for providing a unidirectional current to the electromagnet; and a reversing device disposed in the housing and connected between the electromagnet and the power supply for periodically changing the direction of the current flowing through the electromagnet so that the magnetic poles of the electromagnet align with the magnetic poles of the electromagnet corresponding to the frontmost rail electromagnet on the train track on which the maglev train is running. The reversing device periodically changes the direction of the current flowing through the electromagnet so that the magnetic poles of the electromagnet align with the magnetic poles of the electromagnet corresponding to the frontmost rail electromagnet on the train track on which the maglev train is running. By utilizing the principle that magnets with like poles repel each other, the maglev train is decelerated, thereby providing the driver with a longer reaction time.

The invention discloses an underground equipment train self-moving controller system based on a wireless technology. The underground equipment train self-moving controller system comprises an electro-hydraulic control device, a wireless signal acquisition device, a driving device, a wireless remote control system and a sound-light alarm device. The system monitors clamping, braking and pushing states of a train in real time through a wireless pressure sensor and a distance measuring sensor, and intelligent self-moving operation of the train and a track is achieved in combination with a logical algorithm. And the controller adopts Ethernet communication and can be externally connected with a mining camera, so that video signal transmission and real-time equipment monitoring are realized. The design of the wireless sensor greatly reduces the installation difficulty, improves the installation flexibility, and reduces the cable dependence and the system power consumption. The warning lamp is integrated with a wireless communication module, does not need to be additionally provided with a wireless receiving module, and has the functions of sound-light alarm and remote control. The whole self-moving process achieves full-automatic operation through logic control and real-time data feedback, manual intervention is not needed, the device adapts to the complex underground environment, and the operation efficiency and safety are remarkably improved.

The invention discloses a vehicle-mounted maintenance terminal and system for an urban rail braking system, and relates to the technical field of rail transit, the vehicle-mounted maintenance terminal comprises a box body, a power supply assembly and a main control assembly, the power supply assembly and the main control assembly are arranged in the box body, and the main control assembly comprises a central processing unit and a CAN communication module connected with the central processing unit; the CAN bus data acquisition module is used for acquiring CAN bus data of an urban rail braking system; the box body is provided with a window for the CAN communication module to set a terminal resistor. The power supply assembly comprises a power failure detection module which is used for detecting an input power supply in real time and sending a power failure detection signal to the central processing unit when it is determined that the input power supply is abnormal, so that the central processing unit stores various working data within the power failure protection time. The terminal resistor setting window is arranged, the box body does not need to be disassembled, two paths of CAN bus terminal resistors can be flexibly arranged, various brake platform requirements are met, vehicle distributed arrangement is met, and meanwhile the integrity and effectiveness of data can be guaranteed.

A method for managing braking in a degraded adhesion condition is described, comprising the steps of: - setting a target deceleration value (Dobb) that allows the train to reach a zero traveling speed in a target stopping distance (Disobb); - applying a non-degraded braking force (Fnd), the value of which allows the target deceleration value (Dobb) to be obtained; - verifying the presence of a degraded adhesion condition; - if no degraded adhesion condition is detected, maintaining the application of the non-degraded braking force (Fnd); - if a degraded adhesion condition is detected: - by means of sliding control means, ensuring that the braking means apply a degraded braking force (Fd); - activating recovery means arranged to positively influence the train deceleration; - determining a compensation deceleration value (Dcomp); - applying a compensation braking force by means of at least one braking means and / or recovery means, so that the train reaches a zero traveling speed within the target stopping distance (Disobb).

The invention provides a hydraulic braking system for a rail trailer and a working method of the hydraulic braking system, and the hydraulic braking system comprises a position sensing module which is used for sensing the position and the speed of the trailer in real time and generating different levels of braking signals; the central processing module is in communication connection with the position sensing module and is used for monitoring the brake signals of different levels and generating brake instructions of different levels based on the brake signals of different levels; and the instruction execution module is in communication connection with the central processing module and is used for executing corresponding braking operations based on the braking instructions of different levels. The safety, reliability, maintainability and operation efficiency of the rail trailer braking system are comprehensively improved through systematized architecture design, a software and hardware combined safety strategy, redundant integration of key components and a graded collaborative braking process.

The embodiments of the present application disclose an anti-collision method and apparatus for trains in a cooperative formation. The anti-collision method includes: determining whether it is necessary to control the current train to brake; determining whether a real-time distance between the current train and a previous adjacent train in the same formation as the current train is greater than a preset minimum safety distance; controlling, under a condition that the real-time distance is less than the preset minimum safety distance, the current train to perform electromagnetic braking; and calculating, under a condition that the real-time distance is greater than the preset minimum safety distance, a real-time safety distance between the current train and the previous adjacent train, and controlling, under a condition that the real-time distance is less than the real-time safety distance, the current train to brake.

The application discloses an emergency brake relief device and method of a motor train unit and the motor train unit. The device comprises a gas circuit device and a circuit device. The gas circuit device comprises an emergency exhaust button located at a head car of the motor train unit, a conversion cutoff plug door, a wind charging module, a wind supply cutoff plug door, a distribution valve module located at each vehicle of the motor train unit, and a train pipe. When the conversion cutoff plug door is conducted, the train pipe supplies wind to the distribution valve module, so that each vehicle enters an indirect air brake mode. The circuit device comprises a safety loop bypass switch and an emergency exhaust switch. The safety loop bypass switch bypasses the safety loop in the case that the safety loop cannot be relieved, so as to relieve the emergency brake of the motor train unit. In the case that the safety loop is bypassed and the wind supply cutoff plug door is conducted, the emergency exhaust button sends an emergency brake instruction to a BP rescue conversion device through the emergency exhaust switch, so that the motor train unit is braked in an emergency mode. The scheme can relieve the emergency brake caused by continuous power failure of the safety loop, and improves the rescue efficiency.

The application provides a train sanding control method and a vehicle. The method comprises the following steps: calculating wheel set deceleration and wheel set deceleration differential value in real time during train braking; when the anti-skid activation signal is set in N1 periods, controlling the sanding device to sand at a first sanding pressure; when the wheel set deceleration meets a preset condition in N1 periods, generating an adaptive sanding control instruction according to the wheel set deceleration and the wheel set deceleration differential value, and controlling the sanding device to sand adaptively according to the adaptive sanding control instruction; in the adaptive sanding control process, acquiring train wheel-rail friction and target braking force in real time; adjusting the adaptive sanding control instruction according to the train wheel-rail friction and the target braking force, and controlling the sanding device to sand by using the adjusted sanding control instruction. The application can accurately sand, quickly restore wheel-rail adhesion, and reduce the sanding amount.

The present invention discloses a rail transit vehicle and regenerative braking control method and system. The method comprises obtaining the maximum regenerative braking power of a locomotive and the power of an onboard braking resistor; obtaining the maximum allowable charging current and maximum allowable charging voltage of an onboard energy storage device in real time; calculating the maximum rechargeable power request value of the onboard energy storage device in real time based on the maximum allowable charging current and maximum allowable charging voltage; and controlling the electric braking force and regenerative braking power of the locomotive based on the calculated maximum rechargeable power request value, the maximum regenerative braking power, the power of the onboard braking resistor, and a driver controller level signal. The present invention adjusts the regenerative braking power of the locomotive in real time based on the real-time maximum rechargeable power request value of the energy storage device, thereby ensuring the dynamic balance of the locomotive's regenerative braking power.

The invention discloses a dual-connection heat dissipation type steel backing for high-speed rail braking, and relates to the technical field of high-speed rail braking steel backing, the dual-connection heat dissipation type steel backing comprises a heat dissipation steel backing and a heat dissipation assembly, and the heat dissipation assembly is arranged at the top end of the outer wall of the heat dissipation steel backing; the heat dissipation assembly comprises seven heat dissipation blocks, and six heat dissipation channels are formed between every two adjacent heat dissipation blocks. By installing the heat dissipation assembly, efficient dredging of heat generated by friction in the braking process and high-temperature protection of a bolt connecting part are achieved, instant high temperature transmitted by a friction material is rapidly diffused through the heat dissipation block and the heat dissipation channel, meanwhile, the working temperature of a bolt is controlled to be 150 DEG C or below, and connection failure caused by high-temperature deformation is avoided.

The present disclosure relates to the technical field of vehicle brake control, and provides a parking brake release circuit, a vehicle and a railway vehicle. The parking brake release circuit comprises: at least one motor interface, a first end of the at least one motor interface being used for connecting at least one parking brake motor, the motor interface and the parking brake motor corresponding to each other; a power supply interface, a first end of the power supply interface being used for connecting a vehicle-mounted power supply; a switch, a first end of the switch being connected to a second end of the at least one motor interface, and a second end of the switch being connected to a second end of the power supply interface; the switch being used for turning on or turning off a power supply circuit of the vehicle-mounted power supply to the at least one parking brake motor, wherein the power supply circuit is used for driving the parking brake motor to perform brake release, and turning on or turning off of the switch is controlled by any controller in the vehicle except an electronic parking controller or is manually controlled. In the case of failure of the electronic parking controller, the parking brake is quickly released, and the brake release is quickly performed.

The utility model discloses a rail transit brake sleeve structure which comprises a first sleeve and a second sleeve, the first sleeve and the second sleeve are respectively matched with two ends of a connecting pipe in an inserted mode, and outer threads are respectively arranged on the peripheral walls of one ends, close to the connecting pipe, of the first sleeve and the second sleeve. Connecting pieces are arranged between the first sleeve and the connecting pipe and between the second sleeve and the connecting pipe respectively, each connecting piece comprises a first threaded sleeve in threaded connection with the first sleeve or the second sleeve, first sliding sleeves are fixedly arranged at the ends, away from the connecting pipe, of the first threaded sleeves respectively, and the outer diameter of the first sliding sleeves is smaller than that of the first threaded sleeves. The inner circumferential wall of the first sliding sleeve is in clearance fit with the outer circumferential wall of the first sleeve or the second sleeve, and a locking mechanism used for being detachably connected with the connecting pipe is arranged on the first sliding sleeve. According to the utility model, the adaptive adjustment of the overall length of the brake sleeve structure can be realized, and the overall structural strength of the brake sleeve structure can be effectively ensured.

The utility model discloses a linear motor driven air rail coal transport vehicle suitable for an I-beam, an air rail transport system and a coal loading and unloading system, the transport vehicle comprises a bogie and a vehicle body, the bogie is connected with the vehicle body through a central suspension device; the vehicle body runs on the overhead I-beam track through the bogie; the bogie comprises a framework, two wheel pair assemblies, a linear motor and a braking device used for braking the wheel pair assemblies, the framework is of a U-shaped structure with an upward opening, and the two wheel pair assemblies are symmetrically arranged on the two sides of the opening of the framework; the linear motor is arranged on the framework, and the two wheel set assemblies are located above the linear motor. A stator is arranged at the bottom of the overhead I-shaped beam track, a rotor is arranged on the framework, and the vehicle body is driven to walk in the direction of the overhead I-shaped beam track through the mutual coupling effect between the rotor and a stator coil. The air rail coal transport vehicle is driven by the short stator linear motor, is not limited by adhesion of the steel wheels and the rail, and can realize climbing on a large ramp.

This invention discloses a method and system for predicting brake failure in rail vehicles. The method includes: determining whether the pressure value of the first brake cylinder of the rail vehicle meets a set pressure condition; if so, determining the response time of the braking device after the brake release command is issued based on the operating data of the rail vehicle within a sampling period; and determining the predicted information of brake failure based on the response time of the braking device. The method for predicting brake failure provided by this invention can monitor and predict brake failure faults in real time and layer by layer, minimizing missed and false alarms. Through continuous monitoring of brake failure faults, the braking status of rail vehicles can be better monitored and predicted in advance, effectively reducing the risk of braking failures and improving operational safety and reliability.

The utility model discloses a monorail crane safety protection device which comprises a protection frame and a hanging bracket assembled on the top of the protection frame, a box body is fixedly installed in the protection frame, an observation screen plate is fixedly installed on the front face of the box body, a traction seat is fixedly installed on the back of the protection frame through an installation seat, and a traction rod is fixedly installed on the traction seat. The utility model relates to the technical field of monorail cranes. According to the safety protection device for the monorail crane, through cooperation between the box body and the protection frame, the protection frame can reinforce the exterior of the box body, the situation that the box body is sunken and deformed when expanding is avoided or reduced, and therefore the safety of workers in the box body is improved; according to the anti-falling monorail crane, the anti-falling treatment can be carried out when the monorail crane derails, the safety of the monorail crane during operation is improved, the braking vane can be used for braking and decelerating when the monorail crane derails, and the safety of the monorail crane after derailing is ensured.

A control system and a control method receive, process and exchange information relating to at least one slip-protection system and a unit for outputting adhesion-optimizing material, such as sand, in a rail vehicle.

The invention describes a method for the computer-implemented control of an electrodynamic or electropneumatic braking system of a rail vehicle with a control loop. The braking system comprises an actuator assigned to at least one wheel of the rail vehicle, wherein the control loop, during operation of the rail vehicle, processes a requested target frictional contact (ftarget) at a current time step k between the wheel and a rail and outputs a time-discrete target braking quantity (Mk+1) at a subsequent time step k + 1, which is supplied to the braking system as an input variable.At each time step k, a braking force change (ΔMk) is determined from one or more time steps during the operation of the rail vehicle from the requested target frictional contact (fsoll), a currently utilized actual frictional contact (fist,k) and its derivative (ḟist,k), and a derivative of a current slip (ṡk), which is superimposed on the current braking quantity (Mk).

The invention discloses a linear motor driven air rail coal transport vehicle suitable for an I-beam, an air rail transport system and a coal loading and unloading system. The transport vehicle comprises a bogie and a vehicle body, and the bogie is connected with the vehicle body through a central suspension device; the vehicle body runs on the overhead I-beam track through the bogie; the bogie comprises a framework, two wheel pair assemblies, a linear motor and a braking device used for braking the wheel pair assemblies, the framework is of a U-shaped structure with an upward opening, and the two wheel pair assemblies are symmetrically arranged on the two sides of the opening of the framework; the linear motor is arranged on the framework, and the two wheel set assemblies are located above the linear motor. A stator is arranged at the bottom of the overhead I-shaped beam track, a rotor coupled with the stator is arranged on the framework, and the vehicle body is driven to walk in the direction of the overhead I-shaped beam track through the mutual coupling effect between the rotor and a stator coil. The aerial rail coal transport vehicle is driven by the linear motor, is not limited by adhesion of steel wheels and rails, and can realize large-ramp climbing.

The present invention relates to the field of train braking technology, and provides a braking control system and method for a long-formation heavy-load train. The braking control system of the long-formation heavy-load train includes: a braking signal control device, a wireless communication module and a braking output device installed on each vehicle, the braking output device including a braking control module and an inclination detection sensor electrically connected to the braking control module, a vehicle braking module and a weight detection device; the braking control module is communicatively connected to the braking signal control device via a wireless communication module, and the brake cylinder pressure is adjusted according to parameters such as braking deceleration instructions, inclination angle data and vehicle weight, which is conducive to more accurate adjustment of the braking force of each vehicle, thereby ensuring that the braking deceleration of each vehicle tends to be consistent, which is conducive to reducing the longitudinal impact force of the train, and thus ensuring the safety and braking effect of the vehicle.

A slot device for high-speed train drag-control is provided, including a left slot and a right slot symmetrically arranged with respect to a center plane of a body of a train. The left slot and the right slot are symmetrically arranged on two inner side surfaces of a head of the train. Each of the left slot and the right slot includes a slot inlet and a slot outlet. The slot inlet is arranged in a region on a side of a nose tip of the train, and the slot outlet is arranged in a flat section region on a top of the head of the train. This slot device utilizes aerodynamic principles to design two symmetrical slot configurations. This slot device increases train drag and reduces braking distance. With a simple control method, it meets the need for short-distance braking during high-speed operation of the train.

The invention discloses a maglev train braking system and a control method, the maglev train braking system comprises a braking control system, an electric braking module and a landing braking module, the electric braking module and the landing braking module are connected with the braking control system, and the braking control system is used for distributing braking force requirements to the electric braking module and the landing braking module; the parking brake module comprises a suspension control system, an electromagnet and a vertical skid which are connected in sequence; the suspension control system is connected with the brake control system and used for obtaining the parking braking force requirement from the brake control system, the suspension force is adjusted by controlling the current of the electromagnet, and the size of the parking braking force is adjusted. The suspension force is adjusted by controlling the current of the electromagnet, and the braking force of the vehicle falling is adjusted, so that the braking force requirement can be met without a hydraulic braking system, the weight, the equipment and the cost are greatly reduced, the chassis space is increased, the maintenance space is increased, and convenience and rapidness are achieved.

The application discloses a hydraulic power device of a high-speed train landing and taking-off brake system and particularly relates to the field of high-speed trains. The hydraulic power device comprises an oil source sub-system, the oil source sub-system comprises an oil tank, the oil tank is connected with an oil outlet pipeline and an oil return pipeline respectively, the oil outlet pipeline is sequentially provided with an oil source treatment unit and an oil source conveying unit, the oil source conveying unit is connected with a brake sub-system and a landing and taking-off sub-system through a shunt unit, the brake sub-system comprises a first check valve, a first electromagnetic on-off valve, a first pressure reducing valve and a pressure reducing control unit which are sequentially arranged, the landing and taking-off sub-system comprises a second check valve, a third electromagnetic on-off valve, a second pressure reducing valve, a three-position four-way reversing valve and a first safety valve which are sequentially connected, and the three-position four-way reversing valve is connected with the oil return pipeline. Based on the device, landing gear, brake system control and hydraulic system monitoring can be simultaneously realized.

A disc-shaped permanent magnet eddy current braking device comprising an axle (70), a brake disc (10) mounted on the axle (70), and a permanent magnet eddy current braking device located on one side of the brake disc (10). The permanent magnet eddy current braking device includes an outer ring permanent magnet assembly (30) and an inner ring permanent magnet assembly (40). The outer ring permanent magnet assembly (30) comprises several outer ring permanent magnets (31) uniformly distributed circumferentially, with the S-poles and N-poles of the outer ring permanent magnets (31) arranged sequentially and alternately. The inner ring permanent magnet assembly (40) comprises several inner ring permanent magnets (41) which are uniformly distributed in the circumferential direction, wherein the S-poles and N-poles of the inner ring permanent magnets (41) are arranged sequentially and alternately.The inner ring permanent magnet assembly (40) is rotatable for controlling a braking force by changing the phase of the inner ring permanent magnets (41) relative to the outer ring permanent magnet assembly (30). The device uses the permanent magnets to generate a magnetic field to prevent rotation of the brake disc and employs a drive motor to control a stator to rotate, thereby activating and deactivating an eddy current and the braking force, thus replacing friction braking and reducing wear on the friction pairs.

The invention discloses an intelligent parking braking system for a railway wagon, relates to the technical field of railway wagon braking, and solves the technical problems that in the prior art, parking scenes and the abrasion condition of parking brake pads are not accurately considered, so that potential safety hazards exist in parking braking, and the parking effect is poor. The theoretical required torque is calculated according to the road surface gradient; calculating the wear degree of the brake pad according to the brake pad parameters; calculating an actual demand torque according to the theoretical demand torque and the wear degree of the brake pad, and then generating a brake current; the corresponding motor is adjusted according to the braking current; an alarm signal is generated according to the wear degree of the brake pad, the required torque required for braking of the truck is calculated in real time, corresponding braking torque is distributed to a plurality of braking drives of the truck in a self-adaptive mode, and the wear condition of the brake pad is dynamically calculated by considering the inconsistency of damage to the brake pad caused by the truck under different braking conditions, so that the braking effect of the truck is improved.