32results about How to "Large braking force" patented technology

The invention relates to a compact type running and parking integrated electronic mechanical braking mechanism, and belongs to the technical field of braking equipment. Comprising a mounting frame, a brake assembly and a brake caliper body assembly, and the brake assembly comprises a service brake unit and a parking brake unit; the service braking unit comprises a braking motor and a reduction gear set; the brake caliper body assembly is provided with a brake caliper body, the brake caliper body is slidably installed on the installation frame, and one end of the brake caliper body is connected with the power end of the brake motor through a reduction gear set. The parking braking unit comprises a parking motor, a ratchet wheel and a pawl; the ratchet wheel is connected with the reduction gear set, the pawl is connected with the power end of the parking motor, and a buffering piece is arranged between the pawl and the power end of the parking motor and used for forming flexible connection between the pawl and the power end of the parking motor when the ratchet wheel is locked by the pawl and fails. Flexible connection is formed between the pawl and the power end of the parking motor, the parking stability is improved, frictional wear between parts is reduced, and the service life of the mechanism is prolonged.

The application discloses a brake disc brake, a brake system and a brake disc brake / loosen brake method, relates to the technical field of oil drilling equipment, and comprises a clamp body assembly with a brake gap, brake blocks are arranged on the two side walls of the brake gap, at least one brake block piston block is present, each piston block is in sliding connection with a piston hole in the clamp body assembly; the middle part of the piston block is provided with an annular boss, a first sealing structure is arranged between the outer side wall of the annular boss and the inner wall of the piston hole, and the two ends of the piston block are respectively provided with a third sealing structure and a second sealing structure between the piston hole; the piston hole space between the first sealing structure and the second sealing structure is a brake oil cavity, and the piston hole space between the first sealing structure and the third sealing structure is a loosen brake oil cavity. The application changes the original mode in which only the elastic force of a butterfly spring is used as a braking force, and utilizes hydraulic oil to make the braking force of the brake larger, so that the development demand of equipment large-scale and heavy-load can be met.

The invention provides a pressure relief type pushing device and a braking system, and relates to the field of braking, the pressure relief type pushing device comprises a shell, the interior of the shell is divided into a first cavity and a second cavity through a partition plate, the first cavity and the second cavity are used for containing a hydraulic medium, and the partition plate is provided with a circulation opening used for communicating the first cavity with the second cavity; the hydraulic pump is used for driving a hydraulic medium to flow into the second cavity from the first cavity; the driving assembly is partially located in the second cavity and used for being driven by the hydraulic medium to move in the direction away from the partition plate. The reset piece is located in the second cavity, makes contact with the driving assembly and is used for driving the driving assembly to move in the direction close to the partition plate; the part, extending out of the second cavity, of the driving assembly is used for driving a braking structure of the braking device to generate braking force, the braking force is reduced in the state that the driving assembly moves in the direction away from the partition plate, and the braking force is increased in the state that the driving assembly moves in the direction close to the partition plate. The braking system is simple in structure and high in braking reliability.

The present invention discloses a dual-motor magnetorheological fluid brake device, comprising a housing and an axle, wherein the housing is surrounded by front and rear bottom plates and side plates to form a cylindrical working chamber, wherein the axle passes through the front and rear bottom plates and is arranged in the working chamber, wherein the axle is connected to the front and rear bottom plates respectively through bearings, wherein a sealing cylinder is arranged in the working chamber, wherein the inner surfaces of the front and rear bottom plates are provided with two annular protrusions, wherein the left and right ends of the sealing cylinder are respectively clamped in the inner annular protrusions of the front and rear bottom plates, and after being assembled with the front and rear bottom plates, a sealing chamber for containing magnetorheological fluid is formed; wherein a brake disc and two groups of magnetic conductive modules are arranged in the sealing chamber, wherein the magnetic conductive modules are respectively arranged on the bearings of the front and rear bottom plates and rotate coaxially with the axle; wherein the brake disc is arranged on the axle and is located between the two groups of magnetic conductive modules and rotates coaxially with the axle. The present invention utilizes the instantaneous solidification characteristics of the magnetorheological fluid after being magnetized to wrap the brake disc and apply braking force, which will greatly reduce the degree of wear on the workpiece and extend the service life of the product.

The present invention discloses a wheelchair motor, including a motor shaft, a first end cover, a second end cover, a wheel hub, a stator group, a magnetic steel and a brake unit, wherein the brake unit includes a connecting seat, a moving plate, a stator, a friction plate, a resistance spring, a magnetic brake seat, a temperature sensor for monitoring the internal temperature of the motor and a Hall element for monitoring the distance between the moving plate and the magnetic brake seat and the rotation speed of the friction plate during braking. A polygonal boss ring is provided at one end of the connecting seat; the friction plate is plugged into the polygonal boss ring and is located between the moving and stator plates, and the stator is connected to one axial end of the magnetic brake seat with an axial interval L. The temperature sensor and the Hall element are respectively arranged on the silicon steel sheet turns of the stator group and on the magnetic brake seat. The advantages are: large braking force and good braking response, and the internal state of the motor is monitored to make it in good operating state and increase its service life. The placement of the sensor element is cleverly designed to ensure the accuracy of the collected signal without affecting the overall structure; the structure of the whole vehicle is optimized and beautiful.

The application provides a kind of based on hydraulic drive's braider broken wire detection and brake protection device, belongs to braider technical field;Solve the problem that braider in prior art does not have broken wire detection function and brake protection function;Its technical scheme is that a kind of based on hydraulic drive's braider broken wire detection and brake protection device, including spindle, dial, transmission sprocket, chain, hydraulic motor base and hydraulic motor, still include centrifugal force deceleration mechanism and multi-plate clutch, hydraulic motor and multi-plate clutch are connected by shaft coupling, centrifugal force deceleration mechanism and multi-plate clutch are provided with intermediate gear and bevel gear, deceleration disc is arranged in centrifugal force deceleration mechanism, deceleration disc and intermediate gear and sprocket synchronous rotation, hydraulic motor base two sides are also provided with hydraulic cylinder;The beneficial effects of the application are that the problem that braider in prior art does not have broken wire detection function and brake protection function is overcome.

The present invention discloses a forklift active braking control method based on power shift transmission, comprising the following steps: step 1: obtaining forklift state parameters, if the current state of the forklift is an active braking state, performing step 2; step 2: inputting a current speed signal of the forklift, and obtaining duty ratio parameters that are impact-free and can produce a maximum braking force at the current speed, and outputting proportional solenoid valve control parameters of the transmission according to the obtained duty ratio parameters; step 3: using the proportional solenoid valve control parameters to control the proportional solenoid valve of the transmission to take action, and controlling the forklift power system to output a driving force opposite to a current movement direction of the forklift to drive the forklift to actively brake; step 4: exiting the active braking of the forklift when the forklift speed is detected to be zero. The active safe braking function is realized through clutch active braking, which can reduce the wear and tear of the original braking system of the vehicle and extend its service life. The vehicle clutch adopts a wet clutch, which has excellent heat dissipation effect, long service life and easy replacement.

The application belongs to the technical field of eddy current braking system, and particularly relates to a permanent magnetic eddy current brake. The technical scheme is as follows: a permanent magnetic eddy current brake comprises a metal brake plate unit and a brake magnet unit, the brake magnet unit comprises a permanent magnet array, and the permanent magnet array is arranged close to the metal brake plate unit; as viewed from the metal brake plate unit to the permanent magnet array, the magnet poles of the magnets on the right side of the permanent magnet array are deflected in a clockwise direction relative to the magnet poles of the magnets on the left side, and the deflection angle is less than 180 DEG. The application provides a permanent magnetic eddy current brake capable of improving the utilization rate of magnets.

The utility model discloses a kind of thin permanent magnet brake, including by flange, armature, inner magnetic pole, permanent magnet, magnetic shell coaxial setting composition brake body, the flange is equipped with pre-stretching elastic element between armature, the elastic element continuously pulls armature and moves to flange direction;Permanent magnet and coil are equipped with magnetic shell, the coil diameter is greater than permanent magnet diameter, the permanent magnet is placed inside coil;The permanent magnet is also fixedly connected inner magnetic pole, the inner magnetic pole, permanent magnet, magnetic shell form accommodating groove, the coil is equipped in accommodating groove, the inner magnetic pole and magnetic shell are equipped with at least one gap. The utility model does not destroy the appearance size of brake geometric body, can greatly compress brake thickness, output brake force is big, and performance is more stable.

The utility model discloses a lightweight HST power chassis special for hilly and mountainous areas, and relates to the technical field of agricultural machinery, and the scheme is that the lightweight HST power chassis special for the hilly and mountainous areas comprises a brake assembly, a power assembly and a power assembly, a chassis body; an engine, a clutch, a transfer case, an HST hydrostatic driving device and a driving rear axle are mounted on the chassis body, the engine is in transmission connection with the clutch, the clutch is in transmission connection with the transfer case, the transfer case is in transmission connection with the HST hydrostatic driving device, and the HST hydrostatic driving device is in transmission connection with the driving rear axle; the bearing base is mounted at the bottom end of the chassis body; the transmission assembly is mounted on the bearing base; the driving motor is mounted on the chassis body, and the driving motor is connected with the transmission assembly; auxiliary braking force can be applied to the vehicle, and the vehicle sliding phenomenon caused when the vehicle is parked on a large-gradient or wet and slippery road surface is avoided.

The invention discloses a belt-type oil pumping unit load-off safety protection device, and relates to a belt-type oil pumping unit load-off safety protection device, the belt-type oil pumping unit load-off safety protection device comprises a balance box, a frame, a brake block, a friction plate, a straightening wheel and a spring, a balance box is inserted into the frame, wedge grooves are symmetrically provided on both sides of the balance box, and two concave cavities are symmetrically provided on both sides of the balance box, brake blocks are clamped inside the two wedge grooves, and the two brake blocks are fixedly connected to the friction plate on one side adjacent to the frame by screws, in addition to utilizing the balance box and the frame, the invention only adds springs, brake blocks and friction plates, and does not have a complicated connecting rod transmission mechanism, thereby avoiding the problems of torque transmission and movement flexibility due to many parts, many hinge points, and easy rust at the hinges, so as to achieve the protection device with the characteristics of simple structure, flexible movement and higher braking efficiency.

The present invention provides a planetary roller force transmission mechanism and electric brake device with easy friction rolling and clearance compensation, which solves the problems that the existing electronic mechanical brake system screw and nut are easy to fail to achieve rolling friction, the processing accuracy requirement is high, the screw is easy to slip, and the working noise increases. The mechanism includes a hollow input shaft, a planetary carrier, an output shaft, an expansion ring and N planetary roller assemblies, each planetary roller assembly includes a planetary shaft and a planetary roller; the planetary carrier is arranged in the hollow input shaft; the N planetary shafts are arranged on the planetary carrier along the circumferential direction, and there is a radial gap between the planetary shaft and the planetary carrier; the hollow input shaft is provided with an internal thread or an internal annular convex groove, and the planetary roller is provided with a matching external thread or an external annular convex groove; two expansion rings are respectively located on the outer side of the two end surfaces of the planetary carrier, each expansion ring is formed by N inwardly opening outer rings and N outwardly opening inner rings staggered and connected end to end, and the ends of the N planetary shafts are respectively clamped in the N inner rings of the expansion ring; the output shaft is arranged at the front of the planetary carrier.

The invention discloses an electric vehicle dragging torque control method and device and a storage medium, and the method comprises the steps: building the oil pressure of a hydraulic braking system when a vehicle speed threshold value is met, enabling the hydraulic braking system and a DTC to work cooperatively so as to generate expected braking force, and when the vehicle is recognized to step from a low-adhesion road condition to a high-adhesion road condition, controlling the hydraulic braking system to work cooperatively. The braking force is gradually smaller than that of a hydraulic braking system; and the braking force of electric braking is correspondingly increased. According to the invention, sufficient braking force can be obtained when the vehicle enters the high-pressure vehicle, the kinetic energy of the vehicle can be fully recovered, and the energy efficiency of the vehicle is improved.

The present invention relates to a variable lever ratio brake pedal, and belongs to the technical field of automobile brake systems. The variable lever ratio brake pedal of the present invention comprises a pedal bracket, a first-stage pedal arm, a second-stage pedal arm, a T-shaped pin, a guide block and a brittle gasket. When the booster fails, the variable lever ratio brake pedal of the present invention automatically adjusts the lever ratio according to the design values ​​of the first-stage pedal arm and the second-stage pedal arm, thereby increasing the braking force, shortening the braking distance and reducing safety hazards. Moreover, the brake pedal of the present invention adopts a purely mechanical trigger structure, which is simple and reliable in structure, and can be used repeatedly after replacing the brittle gasket.

The present invention belongs to the technical field of brake actuators, and specifically relates to an oil-electric hybrid brake device. The brake device includes a caliper frame and a caliper body slidably connected to the caliper frame; the caliper body has a jaw that can accommodate a brake disc; friction plates are provided on the caliper body and on both sides of the jaw, respectively recorded as the first friction plate and the second friction plate, and a hydraulic drive device and an electric drive device are relatively provided on the caliper frame and on both sides of the caliper body; the hydraulic drive device can push the first friction plate to move in the direction close to the second friction plate, and the electric drive device can push the second friction plate to move in the direction close to the first friction plate. The present invention not only shortens the braking response time, but also improves the braking force, effectively solving the defect that the traditional EPB braking response speed and braking force cannot be taken into account at the same time. At the same time, the present invention has the dual functions of service braking and parking braking, and has the advantages of good braking stability and less space occupation.

The utility model belongs to the technical field of unmanned plane, concretely relates to an unmanned plane brake wheel, including fork arm, wheel shaft, wheel hub, tyre, bottom cover, brake drum, brake shoe and rocker, the utility model discloses a brake component is integrated in the wheel cavity of wheel hub, has reduced the volume and weight of overall structure, meets the requirement of unmanned plane to light weight and compact structure, has improved the flight performance and endurance of unmanned plane, again adopts the brake mode of brake shoe and brake drum friction, can provide greater braking force, ensures that unmanned plane can stop rapidly and effectively when needing to brake, and realizes the transmission of brake line tension to brake shoe action through rocker, rotating rod and other components, and its structure is simple, transmission efficiency is high, reduces the possibility of energy loss and fault occurrence, and is easy to maintain and overhaul, reduces use cost.

A kind of intelligent commercial vehicle light truck front axle, including front axle and knuckle rotationally arranged at the outer end of front axle, the outer portion of the rotating shaft of knuckle is supported with front hub by bearing unit, and the outer end of front hub is fixed with brake disc, knuckle is provided with brake caliper corresponding with the inner side of brake disc, the upper and lower knuckle pins of front axle are respectively provided, the upper and lower knuckle support sleeves of the inner side of knuckle are respectively sleeved on corresponding knuckle pin, and the upper and lower knuckle support sleeves and knuckle pin are respectively provided with thrust bearing, the inner side of front hub is fixed with gear ring, the side of knuckle close to gear ring is fixed with intelligent sensor, the detection end of intelligent sensor is opposite to gear ring, and forms response gap.The utility model intelligent sensor and gear ring opposite movement form waveform signal, and through identifying different waveform signal, vehicle controller can automatically identify vehicle actual operating state.

The invention belongs to the technical field of wind power generation equipment, and particularly relates to an electro-hydraulic brake device of a yaw system of a large wind turbine. The invention provides an electro-hydraulic brake device for a yaw system of a large-scale wind turbine, and aims to solve the problem that a brake device applied to a yaw system of a wind driven generator in the prior art is complex in structure and not easy to maintain. An electro-hydraulic brake device of a yaw system of a large wind turbine comprises an electromagnetic valve component and a brake disc body component, the brake disc body component comprises a brake disc body, an oil cavity is formed in the brake disc body, a piston is connected in the oil cavity in a sliding mode, a brake pad is installed on the piston through a rod piece, and the brake pad is located outside the oil cavity; the scheme that the hydraulic oil pressure is increased through electromagnetic valve driving, and then the hydraulic pressure drives the brake device to be started is adopted, namely, the electro-hydraulic joint control scheme. The problems of system complexity and response delay of a hydraulic system can be solved, enough driving force can be provided, and a normally-closed brake system can be rapidly started.

The application relates to the electric drive technology field of new energy vehicles, in particular to a differential protection method and device, an electric vehicle and a storage medium, wherein the method comprises the following steps: acquiring the output torque of a driving motor in the electric vehicle; if the output torque is in a preset torque interval, activating the differential protection function of the differential and / or the gravity control system of the electric vehicle, wherein the execution priorities of the gravity control system and the differential protection function are different; reducing the output torque of the driving motor by using the differential protection function and / or the gravity control system, so as to reduce the speed difference between the half shafts in the differential, until the speed difference is less than a first preset value. Thus, the problem that the differential is prone to failure and the vehicle is prone to failure due to long-time wear and tear of the differential exceeding the design boundary in the prior art is solved, the service life of the electric vehicle is reduced, and the user experience is poor.

The embodiment of the invention provides a braking energy recovery method and device, a storage medium and an operation machine. The method comprises the steps that the first braking state of a hydraulic braking pedal and the second braking state of an electric braking pedal are obtained; determining a braking type of the working machine; when the braking type is determined to be hydraulic braking, controlling the working machine to enter a hydraulic braking mode; the first opening degree of the hydraulic brake pedal and the operation speed of the operation machine are obtained; when the first opening degree is larger than or equal to the first threshold value and the operation speed is larger than the preset speed, the operation machine is controlled to enter the electric braking mode; determining a first negative torque value generated by the walking motor in the hydraulic braking mode and the electric braking mode; determining a first electric energy feedback value which can be fed back to the power battery when the operation machine decelerates under the braking type; the electric energy of the first electric energy feedback value is recycled to the power battery, the electric braking mode is started when the operation machine is in the hydraulic braking mode, braking force is increased, and the energy recycling efficiency is improved.

The invention discloses an electromagnetic drive-by-wire brake control system of an electric agricultural machine. The electromagnetic drive-by-wire brake control system comprises a hub brake disc, an elastic clamp body, an electromagnetic coil, an electromagnet and a brake friction plate. The elastic clamp body comprises cantilevers which are used for clamping a hub brake disc and have elasticity on the left side and the right side, the cantilevers which have elasticity on the left side and the right side are connected with each other, the electromagnets are installed on the cantilevers which have elasticity on the left side and the right side of the elastic clamp body, the electromagnetic coils are installed on the electromagnets, and the brake friction plates are installed on the electromagnets. The electromagnetic coil controls elastic deformation of the elastic clamp body, so that the elastic cantilevers on the left side and the right side of the elastic clamp body attract each other or repel each other, and the hub brake disc brakes or relieves braking. The braking force is increased, the braking distance and time are reduced, the power, the target speed and the braking distance and time can be accurately controlled, the structure is ingenious, and safety, reliability and sensitivity are good.

The invention relates to the technical field of automatic parking, in particular to an automatic parking brake control system and method.The automatic parking brake control system comprises a driving motor, a motor control module, a wheel speed acquisition module, a data operation module, a positioning module, a planning and decision module, a brake control module and a hydraulic brake system; on the basis of a traditional hydraulic braking system, motor torque and wheel speed parameters are read through a motor control module and a wheel speed acquisition module, vehicle running parameters are obtained through a data operation module, and then expected braking force and deceleration are given by a planning and decision module in combination with a positioning module and sent to a braking control module; and the brake control module controls the hydraulic brake system to realize automatic parking of the vehicle. According to the invention, monitoring of vehicle load data and deceleration is added, and automatic parking of the vehicle is controlled by combining the planning and decision module and the brake control module with specific data, so that the cost is low, and the parking efficiency and precision are obviously improved.

The utility model relates to the field of brakes, and discloses a dry-type fixed caliper which comprises a caliper body, a brake driving mechanism drives a brake block to brake, a first mounting cavity is formed in the outer end face of the first caliper body, a second mounting cavity is formed in the inner side end face of the first caliper body, and the brake driving mechanism comprises a driving motor and a transmission mechanism. The driving motor is mounted in the second mounting cavity, the transmission mechanism is mounted in the first mounting cavity, the driving motor is connected with the transmission mechanism to drive the transmission mechanism to move, and the transmission mechanism drives the brake block to axially move; a top cover is arranged at the upper end of the mounting cavity I, and the transmission mechanism is mounted in a space formed by the top cover and the mounting cavity II; the transmission mechanism comprises a driving shaft and further comprises a guide cavity, the guide cavity is located around the second installation cavity, the axes of the guide cavity are parallel, the guide cavity extends from the outer end to the jaw direction, the driving shaft can act on the brake block through the guide cavity, and the brake caliper has the advantages of being compact in structure and reliable in braking force and cannot affect existing vehicle design.

The utility model discloses a flat type permanent magnet brake which comprises a brake body formed by coaxially arranging an outer flange, an armature, an inner flange, an inner magnetic pole, a permanent magnet and a magnetic shell, a pre-stretched elastic element is arranged between the outer flange and the armature, and the elastic element continuously pulls the armature to move towards the outer flange; a containing groove is formed in the magnetic shell, a permanent magnet and a coil are arranged in the containing groove, the diameter of the permanent magnet is larger than that of the coil, and the permanent magnet is arranged on the outer side of the coil; the permanent magnet is further fixedly connected with an inner magnetic pole, an inner flange is further arranged on the containing groove, the containing groove forms a closed space through the inner flange, the inner magnetic pole and the permanent magnet, the closed space is provided with at least one gap, and the coil is arranged in the closed space. The overall dimension of the geometry of the brake is not damaged, the thickness of the brake can be greatly reduced, the output braking force is large, and the performance is more stable.

The utility model discloses a braking system capable of being used for multiple combinations, a braking platform is installed on the vertical upper portion of a braking platform in parallel through a pair of rotating shafts which are vertically arranged, the pair of rotating shafts are respectively provided with a braking rocker arm, and the pair of braking rocker arms are located between the braking platform and the braking platform and can rotate around the rotating shafts. The transverse right ends of the pair of brake rocker arms are rotationally connected with air cylinder contacts arranged at the two longitudinal ends of the same air cylinder in a one-to-one correspondence mode, and a longitudinally-arranged reset spring is further installed between the pair of brake rocker arms. The transverse left ends of the pair of brake rocker arms are each rotationally provided with a brake block, the pair of brake blocks are used for clamping a brake flywheel, and the brake flywheel is installed on a rotating shaft which is longitudinally arranged. According to the brake system, a plurality of brake systems can be arranged on a single shaft, and a plurality of brake systems can also be arranged on a plurality of shafts, so that the arrangement is flexible and diversified; by means of flexible arrangement, flexible control can be achieved, and multiple functions such as parking braking, rapid braking and parking braking are achieved under multiple control strategies.

The utility model discloses a spring controller of an elevator braking device, and relates to the technical field of elevator braking devices. The elevator braking device comprises an outer box and further comprises a braking part which is installed in the outer box and used for transmitting braking force into an elevator. The number of the locking parts is two, and the two locking parts are both arranged in the braking part; the number of the extrusion parts is two, and the two extrusion parts are both located in the braking part; wherein the two locking parts are used for generating braking force, and the two extrusion parts are used for assisting the two locking parts to operate, so that the two locking parts generate larger braking force. By arranging the locking part, the problems that in the using process of a spring controller of an existing elevator braking device, the braking time is long, a braking spring needs to be compressed gradually, the braking spring is difficult to generate large enough elastic force in a short time, and the braking response speed is affected are solved.

The utility model discloses a hydraulic brake system structure which comprises a support assembly, an adjusting mechanism, a brake switch, a multi-friction-plate wet brake, a hand brake operating lever assembly, an energy accumulator and two brake pumps. The two brake pumps are fixed to the support assembly through bolts. The adjusting mechanism can move back and forth on the support assembly. A pedal plate on the support assembly moves, and brake oil in a piston extrusion pipeline in a brake pump flows to a left multi-friction-plate wet brake and a right multi-friction-plate wet brake which are arranged on an input transmission shaft of a planetary mechanism in a rear axle shell through a brake switch; the hose and the hard conduit are connected between the brake pump and the brake switch; the hose and the hard conduit are connected between the brake switch and the wet brake. According to the utility model, large braking force and good accurate braking performance can be exerted under the action of relatively small braking pedal force; a satisfactory man-machine engineering state is achieved by adjusting the support assembly for fixing the pedal to move back and forth; the number of parts is reduced, and cost is reduced.

The present invention provides a motor with a braking function, comprising a stator assembly and a rotor assembly, wherein the stator assembly comprises a stator core with mounting slots, and a stator coil arranged in the mounting slots, and further comprises a first braking module, wherein the first braking module comprises an eddy current conductor assembly arranged in each of the mounting slots, and a permanent magnet assembly sleeved outside the rotor assembly, wherein the eddy current conductor assembly comprises a first eddy current conductor and a first magnetic conductive back plate, wherein the first eddy current conductor is arranged at the opening end of the mounting slot, and the first magnetic conductive back plate is located in the magnetic conductive area between the first eddy current conductor and the stator coil; the permanent magnet assembly is arranged relative to the first eddy current conductor at the corresponding position. The present invention has the advantages of realizing the driving and braking buffering functions at the same time on the basis of the original motor size.

This invention discloses a dual electromechanical braking device and its control method for automotive braking. The braking device includes a drive motor, an external gear ring, a reduction and torque amplification device, an electromagnetic power supply, an electromagnet A, a permanent magnet A, a first braking execution module, a second braking execution module, a first clamping mechanism, a second clamping mechanism, a first friction pad, a second friction pad, a brake disc, a bearing, a parking device, a displacement detection device, and a brake wear detection device. This invention uses two sets of braking devices to apply double braking to the brake disc, resulting in shorter braking time, better braking effect, and effectively improved safety performance. This invention also provides a control method for the braking process, including control methods for normal mode, emergency braking mode, and parking mode. During braking, if the braking device fails due to power failure, the detection device will promptly issue a safety alarm to the driver and immediately activate the other braking device for emergency braking, achieving backup braking.