57results about How to "Reduced brake response time" patented technology

The notion of an easily retrofitable passive lighting-safety device designed to be generally installed into the existing rear lighting wiring-circuit of any motor-vehicle from motorcycles to cars and trucks, -so as to significantly boost a following driver's visualacuity cognition threshold of awareness regarding the state of a leading vehicle's sudden breaking procedure. The invention provides an intense quasi-precognitive white-light "flashback" alerting effect, preferably appearing (particularly under nighttime conditions) as a nearly subliminal approximate 100-200 / millisecond flashback of visually non-deacclimating "white-light", emanating from a vehicle's existing back-up lights (or integrated with the DOT high-center brake-light). The effect being to essentially arouse a following motorist's attention to the simultaneous light-up of the preceding vehicle's stoplights. Regardless as to how long braking action continues, the so called STOPWHITES TM only illuminate in flashback once for a brief instant per actuation of the brakes; -having served their sole purpose in attracting a following driver's attention to need for braking. A following driver being thus able to react substantially sooner than viewing conventional stoplights only; -thereby significantly shortening the braking response-time. Additionally, exemplary circuits teach wiring the preferably solid-state electrical-module with directional-signal lights, as well as the 4-Way / Emergency-flasher system.

A pressure control method for a brake cylinder of a magnetically levitated train comprises the steps that the error between an actual value of the brake cylinder pressure and a final target value of the brake cylinder is worked out and recorded as a target error; the error between the actual value of the brake cylinder pressure and a target value of the impulse limit of the brake cylinder is worked out and recorded as a transient error; a first threshold value and a second threshold value are set; when the target error is larger than the first threshold value, an inflating and deflating electromagnetic valve is opened normally; when the target error is larger than the second threshold value but smaller than the first threshold value, the open time of the inflating and deflating electromagnetic valve during one control cycle is adjusted according to the transient error and recorded as a rough adjusted duty ratio; when the target error is smaller than the second threshold value, the open time of the inflating and deflating electromagnetic valve during one control cycle is adjusted according to the transient error and recorded as a fine adjusted duty ratio; and the rough adjusted duty ratio is larger than the fine adjusted duty ratio. The method is conducted based on the target pressure and the impulse limit target, on the premise that the impulse limit target and the target pressure of the brake cylinder are met, more precise control can be achieved, the brake response time is shortened, the brake distance is decreased, and the steady-state performance of the brake cylinder is improved.

The invention discloses a trailer control valve which comprises a valve body with an inner cavity. A travel brake cavity, a large piston return cavity, a booster cavity, an air outlet cavity and a parking cavity are formed in the inner cavity of the valve body from top to bottom in sequence, an air inlet, an air supply opening, an air outlet, an exhaust port, a travel control opening and a parking control opening are communicated with the inner cavity of the valve body and are formed in the valve body, a pressure increasing valve, a pressure reducing valve and a pressure preparing valve which are communicated with one another are arranged on the valve body, the air inlet is communicated with an air cylinder of a motor tractor, the air supply opening is communicated with the air inlet through a throttling valve and outputs air pressure to an energy supply pipeline of a trailer, the air outlet is communicated with the air inlet through a combined valve, and the combined valve is a normally-closed valve and is controlled by the travel control opening / the parking control opening. Double-loop control of electric control signals and air control signals is adopted, the electrical control over the trailer control valve is achieved, the defect that in the traditional air pressure control process, due to the fact that the pipeline is long, air pressure signals are slow to transmit is overcome, and the vehicle brake response time is shortened.

The invention relates to an eddy current retarder device based on the magnetorheological effect. The eddy current retarder device comprises rotor discs, a stator assembly, a transmission shaft and magnetorheological fluid. The stator assembly comprises a bearing sleeve, stator shells and the like and is located in the middle, the two rotor discs are placed in the stator shells on the two sides of the stator assembly respectively, and gaps between the shells and the rotor discs are filled with the magnetorheological fluid. Eight excitation devices are respectively fixed to the inner side shell of the stator shells on the two sides. Through the structure, air gaps between rotors and a stator are replaced by the magnetorheological fluid with high magnetic permeability and low electrical conductivity, and therefore magnetic circuit magnetic resistance is reduced; meanwhile, under the magnetic field effect, the magnetorheological fluid is converted from Newtonian fluid with low viscosity into Bingham fluid with high shear yield stress. In the brake process, the brake torque generated by eddy currents and the brake torque generated by the magnetorheological fluid act at the same time. The eddy current retarder device with the structure has the advantages of being capable of saving energy and electricity, small in coil heating amount, large in brake torque, and good in brake torque controllability and low-speed performance.

The invention discloses an automobile EBS system based on a braking main valve. The automobile EBS system comprises an EBS electronic control unit, the braking main valve, a front shaft braking air chamber, a rear shaft braking air chamber, a first electromagnetic valve assembly, a second electromagnetic valve assembly, a first proportional relay valve, a second proportional relay valve, an electromagnetic valve, a wheel speed detection device and a pressure sensor assembly. The braking main valve is provided with a first loop air outlet and a second loop air outlet. The front shaft braking air chamber is sequentially connected with the first electromagnetic valve assembly, the first proportional relay valve, the electromagnetic valve, the pressure sensor and the second loop air outlet through a control pipeline. The rear shaft braking air chamber is sequentially connected with the second electromagnetic valve assembly, the second proportional relay valve and the first loop air outlet through a control pipeline. The EBS electronic control unit is electrically connected with the braking main valve, the first electromagnetic valve assembly, the second electromagnetic valve assembly, the first proportional relay valve, a second proportional relay valve, the electromagnetic valve, the wheel speed detection device and the pressure sensor assembly. The automobile EBS system is low in cost and enables the arrangement difficulty of a whole automobile to be reduced.

The invention relates to a multi-functional wet axle of a 5-10 T fork-lift truck. Service brakes of the drive axle are wet brakes; inner shells of the left brake and the right brake are provided with a first lubricating oil passage respectively; the first lubricating oil passages on the two sides are communicated with one ends of a right cooling oil pipe and a left cooling oil pipe respectively; the other ends of the right cooling oil pipe and the left cooling oil pipe are connected with a first port and a second port of a three-way pipe respectively; a cooling oil outlet pipe is arranged at the bottom of a drive axle shell corresponding to a main speed reducer assembly; a wheel hub body is provided with an oil drainage hole, a second lubricating oil passage and a third lubricating oil passage respectively; a third port of the three-way pipe and the cooling oil outlet pipe are communicated with an outlet and an inlet of a lubricating pump respectively; and thus, a forced circulatory lubrication system is formed. The service life of the wet axle is 3-5 times the service life of normal drum brakes, and the brake performance does not decline after the wet axle is used for more than three years; and the problem of insufficient engine power supply caused by large size of a hydraulic oil tank and additional arrangement of a cooling fan due to sharing of a cooling mechanism with a hoisting system is solved.

The invention particularly relates to a new energy vehicle brake sensing and pedal position active adjusting type pedal mechanism. The mechanism comprises a brake pedal, a brake rod, a pedal sensing simulator, a support and a push rod device, wherein the brake pedal is rotationally connected with one end of the brake rod through a stepping motor, and the other end of the brake rod is rotationally connected with the support; an angle sensor is arranged between the brake rod and the support, and a pre-induction sensor is arranged on the brake pedal; the pedal feeling simulator comprises a magnetorheological fluid damper and a spring damper, and the spring damper comprises a spring shell and a damping spring arranged in the spring shell; the magnetorheological fluid damper comprises a magnetorheological fluid shell, a damping piston, magnetorheological fluid and a coil, the damping piston, the magnetorheological fluid and the coil are arranged in the magnetorheological fluid shell, the damping piston moves front and back, the magnetorheological fluid shell is fixedly connected with the spring shell and the support, and a damping piston rod penetrates through the spring shell in a sliding mode and is rotationally connected with the brake rod; the damping piston rod is provided with a limiting piece for adjusting the pre-tightening force of the damping spring; the push rod device drives the support to move back and forth.

The invention relates to a four-drive running mechanism for a development machine, which is composed of two groups of track systems. Each group of track system mainly includes a track, a drive wheel, two guiding drive wheels and a wheel support saddle thereof, a tightener, a running bracket, drive power sources and a decelerator. The running mechanism is provided with four drive power sources to simultaneously drive the two guiding drive wheels and two back drive wheels to provide ultra-strong driving force for the development machine and simultaneously reduce the height of the gravity center of a chassis of the development machine, greatly improve the braking capacity and response speed of a running part and prolong the service life of the track.

The invention relates to the field of automobile brake systems, and discloses an air pressure EBS of a dangerous goods semi-trailer transport vehicle. The air pressure EBS comprises an EBS ECU, an automatic pressure regulating valve, a pressure differential meter, a front brake air chamber, an electric control brake master valve, a double-cavity brake air chamber, a wear sensor, a rotating speed sensor, a steering tire pressure sensor and an emergency cut-off valve control pipeline pressure sensor. The brake air chamber is sequentially connected with the automatic pressure regulating valve, the electric control brake main valve and an air tank through pneumatic pipelines, and the pressure differential meter is installed on the brake air chamber. A semi-trailer braking hand brake is independently and additionally arranged and used for controlling the braking force of the semi-trailer under the condition that EBS electronic control fails; aiming at the national requirements of the dangerous goods semi-trailer transport vehicle, the tire burst emergency safety device and the emergency cut-off valve are incorporated into the EBS monitoring range, and the air pressure EBS has importantsignificance for the safety improvement of the dangerous goods semi-trailer transport vehicle.

The invention discloses a brake clearance pre-filling control method, equipment, a storage medium and a device. The method comprises the steps that the current working state of a target vehicle is obtained; it is judged whether the current working state meets a brake clearance pre-filling triggering condition or not; and when the current working state meets the brake clearance pre-filling triggering condition, the brake system is pre-filled with brake pressure. When the current working state meets the brake clearance pre-filling triggering condition, the brake system is pre-filled with the brake pressure so as to reduce the air clearance between the brake disc and the brake friction plate, then if the brake pedal is treaded down again, the effective brake pressure can be generated immediately, and therefore, the braking response time and the time for achieving the target deceleration are shortened, when a driver conducts emergency braking, the air gap between the brake disc and the friction plate can be actively eliminated, the braking response time is shortened, and the purpose of improving the driving safety is achieved.

The invention relates to a drive-by-wire brake system with a redundancy function. The drive-by-wire brake system comprises a drive-by-wire brake in modular design, a brake pump shell, a liquid storage chamber, a first spring, a first piston assembly, a check ring, a rubber ring, a second spring, a second piston assembly, a brake pedal, an angle sensor and a controller; wherein the drive-by-wire brake comprises a brake disc, a left friction plate, a right friction plate, calipers, an electromagnetic coil, a cylinder body assembly, a brake pipeline, a hydraulic control unit, a brake piston, a magnetostriction rod and a wheel speed sensor. In the invention, the magnetostriction actuator is adopted as a power source of the electronic mechanical braking system, the energy accumulator device is adopted, the braking clearance can be rapidly eliminated, the braking response time is shortened, and high braking control precision and response frequency are achieved; thus, even if the electronic mechanical braking system fails, the vehicle can still be braked by means of a conventional hydraulic braking system, and the reliability is high; in addition, the braking distance can be effectively shortened, and the vehicle driving safety is improved.

The invention provides a testing device and testing method for an automatic pressure regulating valve of an electric control pneumatic braking system. The testing device comprises an air source, a pneumatic loop, a valve, a sensor, a signal processing unit and a control unit. The automatic pressure regulating valve is subjected to rack testing including function testing, static performance testing, dynamic performance testing, air tightness testing, leakage testing and braking force testing, so that high risk of real vehicle detection is avoided, the testing efficiency is improved, and the testing consistency is guaranteed. According to the invention, the automatic pressure regulating valve is checked before loading; the performance is improved by continuously modifying the parameters of the automatic pressure regulating valve through testing, so that the automatic pressure regulating valve meets the real-time, rapid, independent and accurate requirements required by the commercial vehicle electronic control pneumatic braking system, the braking response time of the commercial vehicle electronic control pneumatic braking system is shortened, and the reliability of the commercial vehicle electronic control pneumatic braking system is improved. Data of the automatic pressure regulating valve are collected and displayed in real time, and operation is convenient; detection processis high in automation degree.

The invention provides a drum type brake with an automatic and continuous adjustable gap. The drum type brake comprises a fixing plate, a right friction sheet, a return spring group, a lower brake cylinder assembly, a left friction sheet and an upper brake cylinder assembly, wherein the fixing plate is fixedly mounted on a vehicle axle; the upper brake cylinder assembly and the lower brake cylinder assembly are fixedly mounted on the fixed plate respectively; an upper buckle part of the right friction sheet is mounted in a right brake push cylinder notch on the upper brake cylinder assembly; and a lower buckle part of the right friction sheet is mounted in a right brake push cylinder notch on the lower brake cylinder assembly. According to the drum type brake with the automatic and continuous adjustable gap, the gap between a brake disc and a brake friction sheet of the drum type brake can be realized, and the gap between the brake disc and the brake friction sheet can be stable; and the brake responding time is shortened and the brake safety is improved.

The invention discloses a pedal-feeling simulator for a vehicle and the vehicle with the pedal-feeling simulator. The vehicle comprises a pedal, and the pedal-feeling simulator comprises a shell, a linear motor and an elastic part; and the linear motor comprises a motor primary part, a motor secondary part and a motor push rod, the motor primary part is fixed to the inner wall of the shell, the motor secondary part is arranged in the motor primary part, the motor secondary part is matched with the motor primary part so as to enable the motor secondary part to axially move relative to the motorprimary part, the motor secondary part sleeves the motor push rod to drive the motor push rod to move synchronously, the first end of the motor push rod extends out of the shell to be suitable for being connected with the pedal, and the elastic part is used for applying elastic force to the motor push rod. The pedal-feeling simulator for the vehicle is high in response speed, has a good braking effect, and meanwhile can provide a good 'brake feeling', especially a pedal braking feeling, for a driver.

The invention relates to a heavy truck electric control mechanical disc type brake, in particular to a disc type brake applicable to an electromechanical brake system (EMB). Two sliding pin floating clamp bodies are adopted in a braking clamp. According to a double-push-rod thrust executing mechanism, two ball screw pairs are used for converting the rotation motion into thrust for a friction plateduring braking, and meanwhile the thrust executing mechanism integrates the automatic braking gap adjusting function. A power distribution mechanism averagely distributes source power to the two ballscrew pairs, and the synchronous motion of double push rods is achieved. A planet speed reduction mechanism conducts deceleration and torsion increasing on the rotation motion, and a power output mechanism comprises a driving braking part and a parking braking part. The power distribution mechanism divides power into two parts input to the two ball screw pairs respectively, the ball screw pairs convert the rotating motion into the push rod linear motion, and accordingly the friction plate is pushed for braking. According to the heavy truck electric control mechanical disc type brake, the braking response time is shortened, a pipe line bundle is simplified, and the basic control object is provided for whole truck intelligence.

The invention discloses a high-speed multi-oil-path torque motor rotating table for a numerical control machine tool. The high-speed multi-oil-path torque motor rotating table is characterized in by comprising a workbench, a lubrication groove, a rotating seal ring, a bearing, a pneumatic clamping system, a sliding seat, a core shaft, an oil separating sleeve, a torque motor, an oil separating block and an oil separating plate, the lubrication groove is formed in the workbench, a rotating seal ring is arranged on the lubrication groove, a sliding seat is arranged at the lower portion of the workbench, the pneumatic clamping system is arranged above the sliding seat, the bearing is arranged above the pneumatic clamping system, the torque motor is arranged in the sliding seat, the oil separating sleeve is arranged in the torque motor, the core shaft is arranged in the oil separating sleeve, the oil separating block is arranged at the bottom of the sliding seat, and the oil separating plate is arranged below the oil separating block.

The invention discloses a floating caliper disc brake with a permanent magnet. The floating caliper disc brake comprises a brake caliper and a brake disc, wherein a first groove is formed in the brake caliper at one side of the brake disc; a fixed brake block is arranged on the brake caliper at the other side of the brake disc; a second groove is further formed at the first groove; the permanent magnet is arranged at the groove bottom of the second groove; an armature is arranged at the first groove; a clamping groove is formed in the side, facing the permanent magnet , of the armature; the other side of the armature is connected with a movable brake block; and an excitation coil is arranged in the clamping groove. With the adoption of the technical scheme, the following effects are realized: the armature and the permanent magnet respectively drive the movable brake block and the fixed brake block to move towards the brake disc simultaneously, on one hand, the phenomenon that the movable brake block and the fixed brake block are not close to the brake disc simultaneously to cause inconsistent abrasion in a traditional floating caliper disc brake is avoided, and on the other hand, the brake response time is shortened since the movable brake block and the fixed brake block are close to the brake disc simultaneously, therefore, the braking efficiency is improved.

The invention belongs to the technical field of automobiles, and discloses a braking device and an anti-lock braking system. The braking device comprises an ABS solenoid valve and a brake air chamber,the ABS solenoid valve comprises an air inlet and an exhaust port, and the air inlet and the exhaust port can be selectively opened and closed; the brake air chamber is arranged on the ABS solenoid valve, a vent is formed in the brake air chamber, and the vent can be respectively communicated with the air inlet and the exhaust port. The braking device forms the brake air chamber integrated with the ABS solenoid valve, has a compact overall structure, and is convenient to install and arrange. The braking response time is greatly reduced, and the braking performance is improved. In addition, when the braking is released, the remaining compressed gas in the braking air chamber can be discharged through the exhaust port at the fastest speed to quickly release the braking, and the decompression process of the ABS solenoid valve and the brake return time are greatly reduced, thereby reducing the rate at which a brake heats up and improving the performance of the ABS solenoid valve.

A pressure control method for a brake cylinder of a magnetically levitated train comprises the steps that the error between an actual value of the brake cylinder pressure and a final target value of the brake cylinder is worked out and recorded as a target error; the error between the actual value of the brake cylinder pressure and a target value of the impulse limit of the brake cylinder is worked out and recorded as a transient error; a first threshold value and a second threshold value are set; when the target error is larger than the first threshold value, an inflating and deflating electromagnetic valve is opened normally; when the target error is larger than the second threshold value but smaller than the first threshold value, the open time of the inflating and deflating electromagnetic valve during one control cycle is adjusted according to the transient error and recorded as a rough adjusted duty ratio; when the target error is smaller than the second threshold value, the open time of the inflating and deflating electromagnetic valve during one control cycle is adjusted according to the transient error and recorded as a fine adjusted duty ratio; and the rough adjusted duty ratio is larger than the fine adjusted duty ratio. The method is conducted based on the target pressure and the impulse limit target, on the premise that the impulse limit target and the target pressure of the brake cylinder are met, more precise control can be achieved, the brake response time is shortened, the brake distance is decreased, and the steady-state performance of the brake cylinder is improved.

The invention discloses a hydraulic brake device. The hydraulic brake device comprises two brake discs and a brake pad, the two brake discs are oppositely arranged and connected with each other, cavities are formed in the brake discs, and the two cavities are in communication with each other; mounting grooves are concavely formed in the surface, facing the other brake disc, of one brake disc, thetwo mounting grooves are oppositely formed and define a mounting space, brake bosses are convexly arranged on the bottom walls of the mounting grooves, the interiors of the brake bosses are in communication with the cavities, the two brake bosses are oppositely arranged, and oil filling holes communicated with the cavity are formed in any brake disc; the brake pad is arranged in the mounting spaceand located between the two brake bosses, the protruding ends of the brake bosses face the brake pad, and the surfaces, facing the brake pad, of the brake bosses can be close to or away from the brake pad so as to lock or release the brake pad. According to the hydraulic brake device, the braking force of the braking device is increased so as to shorten the braking response time.

The invention discloses a tread cleaning device. The tread cleaning device comprises a cylinder body, a first piston and a second piston, the first end of the first piston is in sealed sliding connection with the cylinder body, the first piston is sleeved with a first spring and a thrust sleeve, a through hole is formed in the first piston, and a movable block is embedded in the through hole. The second piston can penetrate through the first piston in a sealed and sliding mode, a second spring and a spring seat are arranged in the second piston, a second guide hole is formed in the second piston, the spring seat penetrates through the second guide hole and then is fixedly connected with the first piston, and a clamping groove is formed in the second piston. A radial hole is formed in the thrust sleeve, and a thrust piece is arranged in a cavity defined by the radial hole, the cylinder body and the second piston. The thrust piece can push the movable block to move after the second piston axially moves relative to the first piston, so that part of the movable block is clamped in the clamping groove. The tread cleaning device not only has a gap adjusting function, but also can ensure that the braking force change is small when the elongation of the piston is continuously increased.

The invention provides a hydraulic control air valve and an automobile brake control system, comprising a housing and a piston, the housing has a cavity, and the piston is slidably arranged in the cavity along the axial direction to divide the cavity into a first cavity chamber and the second chamber; the piston slides toward the second chamber as the pressure of the first chamber changes to have an initial position, a first position and a second position. When the piston is in the initial position, the first compensation hole communicates with the second In the second chamber, the brake air inlet is not connected to the brake air outlet; when the piston is in the first position, the piston cover seals the first compensation hole, and the brake air inlet is not connected to the brake air outlet; When the piston is in the second position, the piston cover seals the first compensation hole, and the air intake channel is connected with the brake air intake inlet and the brake air intake outlet. The scheme provided by the invention can realize the integration of clutch and brake of the automobile, achieve the effects of convenient operation and cost reduction, shorten the control pipeline, and reduce the braking response time.

The invention relates to an eddy current retarder device based on the magnetorheological effect. The eddy current retarder device comprises rotor discs, a stator assembly, a transmission shaft and magnetorheological fluid. The stator assembly comprises a bearing sleeve, stator shells and the like and is located in the middle, the two rotor discs are placed in the stator shells on the two sides of the stator assembly respectively, and gaps between the shells and the rotor discs are filled with the magnetorheological fluid. Eight excitation devices are respectively fixed to the inner side shell of the stator shells on the two sides. Through the structure, air gaps between rotors and a stator are replaced by the magnetorheological fluid with high magnetic permeability and low electrical conductivity, and therefore magnetic circuit magnetic resistance is reduced; meanwhile, under the magnetic field effect, the magnetorheological fluid is converted from Newtonian fluid with low viscosity into Bingham fluid with high shear yield stress. In the brake process, the brake torque generated by eddy currents and the brake torque generated by the magnetorheological fluid act at the same time. The eddy current retarder device with the structure has the advantages of being capable of saving energy and electricity, small in coil heating amount, large in brake torque, and good in brake torque controllability and low-speed performance.

The invention discloses a brake assembly suitable for a hub motor. The brake assembly is characterized by comprising an inner buckle type annular brake disc, opposite calipers and a hub motor shell, wherein the inner buckle type annular brake disc is provided with an inner brake disc body, an outer brake disc body and a connecting arm, the radial outer end of the inner brake disc body and the radial outer end of the outer brake disc body are connected through the connecting arm, the hub motor shell is connected with the outer brake disc body, the opposite calipers extend inwards in the radialdirection to form lugs used for being connected with a chassis component, the opposite calipers comprise a first caliper body and a second caliper body, the first caliper body is arranged on the innerside of the inner brake disc body, the second caliper body is arranged in a cavity between the inner brake disc body and the outer brake disc body, the first caliper body is provided with a first piston and a first friction plate, the second caliper body is provided with a second piston and a second friction plate, the first piston and the second piston are oppositely distributed on the inner side and the outer side of the inner brake disc body, and the second friction plate and the first friction plate cooperate with each other to clamp the inner brake disc body for braking, so that the stability of an opposite caliper assembly in the dynamic operation and braking process is kept.

The electromagnet brake comprises a shell, a movable core assembly arranged in the shell in a sliding mode, an electromagnetic coil arranged in the shell and arranged outside the movable core assembly in a sleeving mode, and an end cover arranged at the end of the shell, the movable core assembly comprises a movable core main body arranged in the shell in a sliding mode and a movable core guide rod arranged at the end of the movable core main body, and the movable core guide rod is connected with the movable core main body in a sliding mode. An end cover opening is formed in the end cover, one end of the movable core guide rod is fixedly connected with the movable core main body, the other end of the movable core guide rod penetrates through the end cover opening and extends out of the end cover, and a magnetic isolation sheet and a buffer gasket are further arranged between the movable core main body and the end cover. Compared with the prior art, the electromagnetic valve is simple in structure and convenient to operate, the impact influence between the movable core assembly and the end cover when the electromagnetic valve is started is reduced by arranging the magnetism isolating sheet and the buffering gasket, starting noise is reduced, and the service life of the device is prolonged; and through the arrangement of the magnetic isolation sheet, the influence of magnetic residue of the electromagnetic coil after power failure is reduced, the reset speed of the movable core assembly is increased, and the brake response time is shortened.

The invention discloses a pedal feel simulator for a vehicle and a vehicle having the same. The vehicle includes a pedal, the pedal feel simulator includes a casing, a linear motor, a first elastic member and a second elastic member, and the linear motor includes a motor primary, The motor secondary and the motor push rod, the motor secondary cooperates with the motor primary so that the motor secondary can move axially relative to the motor primary, the motor secondary drives the motor push rod to move synchronously, and the first end of the motor push rod protrudes out of the casing to fit It is connected with the pedal; the two ends of the first elastic part are matched with the inner wall of the shell and the second end of the motor push rod respectively; the second elastic part and the first elastic part are located on both sides of the primary axial direction of the motor, and the The two ends are fitted on the motor push rod and the motor primary respectively. According to the pedal feeling simulator for vehicles of the present invention, the response speed is fast, the braking effect is good, and at the same time, the driver can be provided with good "braking feeling", especially pedal braking feeling.

The invention relates to a brake-by-wire system with redundant functions, which includes a brake-by-wire brake with a modular design, a brake pump housing, a liquid storage chamber, a first spring, a first piston assembly, a retaining ring, and a rubber ring , a second spring, a second piston assembly, a brake pedal, an angle sensor, and a controller; the brake-by-wire brake includes a brake disc, a left friction plate, a right friction plate, a caliper, an electromagnetic coil, a cylinder assembly, a system dynamic pipeline, hydraulic control unit, brake piston, magnetostrictive rod, wheel speed sensor; the present invention uses a magnetostrictive actuator as the power source of the electromechanical braking system, and adopts an accumulator device to quickly eliminate braking The dynamic gap shortens the braking response time, and has high braking control accuracy and response frequency; even if the electromechanical braking system fails, the conventional hydraulic braking system can still be used to brake the vehicle, which has high reliability ; It can effectively shorten the braking distance and improve the driving safety of the vehicle.

The invention discloses a brake assembly suitable for hub motors, which is characterized in that it includes an inner buckle annular brake disc, a facing caliper and a hub motor housing, and the inner buckle annular brake disc has an inner brake The rotor, the outer brake disc and the connecting arm, the radially outer end of the inner brake disc and the radially outer end of the outer brake disc are connected through the connecting arm, the hub motor shell is connected with the outer brake disc, and the diameter of the opposing caliper There are lugs extending inward for connection with chassis components. The opposing caliper includes a first caliper body and a second caliper body. The first caliper body is arranged inside the inner brake disc, and the second caliper body is arranged on the inner brake disc In the cavity between the disc and the outer brake disc, the first caliper body is provided with the first piston and the first friction plate, the second caliper body is provided with the second piston and the second friction plate, the first piston and the second piston Opposed to the inner and outer sides of the inner brake disc, the second friction plate and the first friction plate cooperate with each other to clamp the inner brake disc for braking, maintaining the stability of the opposing caliper assembly during dynamic operation and braking .

The present invention provides an integrated braking system, which includes: an air source control module, a brake anti-skid module and a communication control module; the brake anti-skid module includes: a first brake anti-skid sub-module and a second brake anti-skid sub-module Modules, the first and second brake and anti-skid sub-modules work synchronously or asynchronously, and any brake and anti-skid sub-module selectively outputs an air source; the air source control module selectively controls the first brake and anti-skid sub-modules. air supply to the module and / or the second braking and anti-skid sub-module; the communication control module selectively communicates the first braking and anti-skid sub-module and the second braking and anti-skid sub-module. The invention changes the vehicle-controlled braking system into a rack-controlled braking system, that is, a rack-controlled integrated brake valve controls one bogie to replace an existing brake control unit to control two bogies of the same vehicle. When a failure occurs, only one bogie fails, reducing the impact on the vehicle and reducing the failure rate by 50%.

The invention discloses a pedal-feeling simulator for a vehicle and the vehicle with the pedal-feeling simulator. The vehicle comprises a pedal, and the pedal-feeling simulator comprises a shell, a linear motor, a first elastic part and a second electric part; and the linear motor comprises a motor primary part, a motor secondary part and a motor push rod, the motor secondary part is matched withthe motor primary part so that the motor secondary part can axially move relative to the motor primary part, the motor secondary part drives the motor push rod to move synchronously, the first end ofthe motor push rod extends out of the shell to be suitable for being connected with the pedal, the two ends of the first elastic part are matched with the inner wall of the shell and the second end ofthe motor push rod correspondingly, the second elastic part and the first elastic part are located on the two axial sides of the motor primary part, and the two ends of the second elastic part are matched with the motor pushing rod and the motor primary part. The pedal-feeling simulator for the vehicle is high in response speed, has the good braking effect, and meanwhile can provide the good 'braking feeling', especially a pedal braking feeling, for a driver.