106results about How to "Fast brake response" patented technology

The invention provides an electromechanical brake system based on an automobile bus. The electromechanical brake system based on the automobile bus comprises a brake signal input unit, a central control unit, a plurality of electric brake execution control units and a plurality of electric brakes, wherein the brake signal input unit is used for receiving brake signals and outputting the brake signals to the central control unit in real time; the central control unit is used for outputting multiple paths of brake motor target current signals to corresponding electric brake execution control units in real time according to the received brake signals; the electric brake execution control units are used for respectively driving and controlling corresponding electric brakes in real time according to the received brake motor target current signals; and the electric brakes are used for braking corresponding wheels. Correspondingly, the invention additionally provides an automobile with the brake system. The electromechanical brake system provided by the invention has the advantages of simple structure, small size, convenience in installation, low cost, quick brake response, good stability when used for braking , no pollution and the like.

The invention discloses a touch sense vibration control system and a method of an intelligent terminal. The system comprises a command generator, a filter, a touch sense driver and a linear resonance actuator. The command generator generates an initial command signal according to an input signal. The filter filters the initial command signal so as to allow the amplitude of a predetermined number of initial pulse of the filtered command signal to be greater than a set threshold and phase positions of a predetermined number of pulse at the end to be reversed; and the touch sense driver generates a driving signal for driving the actuator to vibrate according to the filtered command signal. According to the invention, the filter carries out filtering processing on the initial command signal generated by the command generator, so when follow-up generated driving signals are used for driving the actuator to vibrate, the actuator can rapidly make moving responses and braking responses. Thus, overlapping degree of front and back vibration events at a quite short interval in the time dimension is weakened; the degree of distinction of the front and back vibration events in the time dimension is increased; and expected vibration effects are ensured.

The invention relates to a modularized series joint of a collaborative robot. The modularized series joint comprises a joint shell as well as a hollow motor, a harmonic reducer, an input shaft, an output shaft, a torque sensor, a brake, an absolute value encoder and a driver which are arranged in the joint shell, wherein the harmonic reducer, the hollow motor, the brake, the absolute value encoder and the driver are sequentially connected to the input shaft in series. A joint structure disclosed by the invention is more compact in structure, low in cost, higher in safety and reliability, ingenious, modularized and integrated; a brake structure is simple, convenient to install, reliable in brake performance, and stable; a force feedback system is sensitive in performance, stable, and high in reliability; and in addition, central hole wiring is used for wiring and arrangement, so that wire arrangement is more reasonable, and the wiring is more convenient.

The invention relates to a brake control method based on driver brake intension recognition. The brake control method comprises the following steps: (1) judging the current brake intension of a driver through fuzzy reasoning according to a brake pedal opening value obtained by a brake pedal opening degree sensor and a vehicle running speed obtained by a vehicle speed sensor, and thus obtaining the representation value of the current brake intension; (2) obtaining a brake control command corresponding to the current brake intension according to the representation value of the current brake intension and the current brake pedal opening value and the vehicle speed of the vehicle, and carrying out corresponding brake actions. Compared with the prior art, the brake control method has the advantages of rapid response, high reliability and the like, the brake potential is developed, and the driving safety is improved.

The invention discloses a winch brake device which comprises a brake shaft, an outer brake cone plate, an inner brake cone plate, a brake hub, a spiral clutch mechanism and a brake coupling band, wherein the outer brake cone plate, the inner brake cone plate, the brake hub, the spiral clutch mechanism and the brake coupling band are arranged on the brake shaft; a brake drum is meshed with drum key teeth of the winch; the brake shaft drives the spiral clutch mechanism to separate; the outer brake cone plate and the inner brake cone plate respectively clamp the brake hub by the separating process of the spiral clutch mechanism; the outer brake cone plate and the inner brake cone plate are adopted to clamp the brake hub; and the brake hub and the cone plate are in conical contact, the area is larger, the friction force is increased, and brake is reliable. Compared with the existing conical drum tensioning brake, the brake hub is meshed with the drum key teeth of the winch, so the brake force loss is small, the brake response is effectively improved, and the brake performance of the winch is comprehensively improved.

The invention discloses an electronic control unit of an electromechanical braking system, which bases on CAN bus network communication. The electronic control unit comprises a CAN bus network, a major control node and four minor control nodes, wherein, the major control node receives signals sent by a travel route sensor of a brake pedal and four wheel speed sensors, and then generates a corresponding control signal which is sent to the CAN bus network; the minor control nodes receive own signals from the CAN bus network; the signals received by the minor control nodes go through certain processing and are sent to a braking motor; the braking motor then drives an executive mechanism to brake the wheel. The system of the invention can not only compensate for the defects that traditional hydraulic braking system has too long braking pipelines, excessive valve elements, braking hysteresis happening easily, long braking distance, environment contamination caused by braking liquid, and the like, but also maintain data communication with high efficiency and high reliability in a plurality of electronic control systems of automobiles, which has the function of integrating ABS, TCS, ESP, etc.

The invention belongs to the technical field of motor vehicle braking, particularly relates to a multi-functional braking system with declaration torque rising motion conversion mechanism and active adjusting. The purpose of the multi-functional braking system is to supply a system with compact structure, convenient arrangement and simple structure. The multi-functional braking system is characterized by further comprising a brake out shell (21), a brake pedal simulator, a brake master cylinder (3) and a conversion mechanism. By the multi-functional braking system with declaration torque rising motion conversion mechanism and active adjusting, a vacuum booster is canceled, the mechanical connection between the brake pedal and a liquid chamber is canceled, the total body mass is effectively reduced. The structure is compact and the arrangement is easy. The complexity in structure is highly decreased and cost is decreased. By using an electrical machine as the power source, that is connecting machinery with electric, the signal transmission is quick and braking response is quick. By adopting braking backups of mechanical structure, backup structure is allowed to intervene quickly to generate certain braking effect when electrical structure loses effect, and thereby driving safety is guaranteed.

The invention discloses an electric boost braking device which comprises a boost cylinder body, a foot bar assembly, a foot bar reset spring, an electric booster and a brake pump assembly. A brake pump ejector rod used for receiving braking force is arranged on the brake pump assembly. The electric booster comprises an electric power assembly and a boost sliding sleeve, wherein the boost sliding sleeve is slidably arranged in the boost cylinder body, and sliding driving force of the boost sliding sleeve is provided by the electric power assembly. The boost sliding sleeve is in ejection fit with the brake pump ejector rod. The foot bar reset spring is arranged in an axial through hole and elastically connected with the head end of the foot bar assembly in a resettable mode. In the process that the head end of the foot bar assembly slides towards the brake pump ejector rod in the axial direction, the head end of the foot bar assembly sequentially penetrates through a positioning pin through hole and the outer end of the axial through hole in the boost sliding sleeve and acts on the brake pump ejector rod in an ejecting mode. The electric boost braking device has the advantages that the structure arrangement is reasonable, and the foot car braking force and the electric boost braking force are decoupled by each other.

The invention discloses an automatic brake device and an automatic brake method of an automobile capstan. The device comprises a shaft cover, a brake shaft and a spiral clutch mechanism, wherein the spiral clutch mechanism comprises a cone brake part, a torsion spring and a convex lug plate; the brake shaft is provided with a single-row tapered roller bearing; the single-row tapered roller bearing is provided with a brake cone sleeve jointed with the cone brake part; the outer edge of the bake cone sleeve is provided with a spline which is meshed with an inner gear ring of a capstan winding drum. When a motor driving shaft rotates, the shaft cover makes clockwise rotation, the cone brake part is driven to rotate, and the torsion spring is extruded to move towards the left, so that the cone brake part is separated from the brake cone sleeve; when the motor driving shaft stops rotating, the cone brake part makes counterclockwise rotation to reset under the action of the torsion spring, the cone brake part move towards the right and is jointed and tightly held with the brake cone sleeve which runs at low speed, and the brake shaft stops rotating, so that the function of braking is reached. The device is simpler in structure, easy to operate, rapid in assembly, high in brake reliability, low in working temperature and long in service life.

The invention discloses a brake, a brake system and a vehicle. The brake comprises a drive motor, a conversion component, a wedge block component, brake pads and a brake disc, wherein the conversion component is suitable for converting rotation of the drive motor into rectilinear motion; the wedge block component comprises a first wedge block and a second wedge block, the wedge-shaped faces of thefirst wedge block and the second wedge block are oppositely arranged, and the first wedge block and the conversion component synchronously conduct rectilinear motion; the brake pads and the second wedge block synchronously move; and one part of the brake disc and the brake pads are oppositely arranged. Due to the adoption of the drive motor, a mechanical and electrical connecting mode makes the structure of the brake simple, mechanical connection is little, the weight and the size are small, a signal is transmitted quickly, a brake response is made quickly and sensitively, and quick braking can be achieved. In addition, the transmission efficiency is high due to the connecting mode, and energy can be effectively saved.

The invention relates to a disc brake and a vehicle. The disc brake comprises a brake caliper body, a first brake block, a driving braking unit and a parking braking unit, wherein the parking brakingunit comprises a parking motor, a parking screw rod mechanism, a lever mechanism and a push rod; the parking motor drives the push rod to axially move through the parking screw rod mechanism and the lever mechanism in sequence, so that the push rod is enabled to push the first brake block to move so as to compress the brake disc; and the lever mechanism is used for transmitting output force of theparking screw rod mechanism to the push rod. In the brake disclosed by the invention, the driving braking unit and the parking braking unit are arranged so that the brake can achieve two functions ofdriving braking and parking braking at the same time, the function integration level is high, the structure is compact, and the occupied space is small; and compared with hydraulic or pneumatic parking, the braking response is faster, and the safety is better; and in addition, by arranging the lever mechanism, the arrangement mode of all parts in the brake is more flexible, and the structure is more compact.

The invention discloses an electric automobile, and an electric automobile body stabilizing method and system. The electric automobile comprises a power battery, a super-capacitor and wheel side motors, wherein the super-capacitor is connected with the power battery and the wheel side motors are correspondingly arranged on wheels. The electric automobile body stabilizing method comprises the following steps of obtaining the electric quantity of the power battery after receiving a brake control instruction of the electric automobile; judging whether the electric quantity of the power battery isless than a preset electric quantity threshold or not; if the electric quantity of the power battery is larger than or equal to the preset electric quantity threshold, discharging the power battery by using the super-capacitor; and when the electric quantity of the power battery is less than the preset electric quantity threshold, carrying out feedback braking control on the wheel side motors. Therefore, by using the super-capacitor to discharge the power battery, the wheel side motors can provide feedback braking functions under any condition, a characteristic of rapid feedback braking responses of the motors is sufficiently utilized and a purpose of efficient and rapid braking is achieved.

The invention relates to a braking system, in particular to a braking system suitable for an articulated rubber wheel trolley bus with 3-5 carriages. The technical problems that in the prior art, a barking system cannot meet the braking demand of the articulated rubber wheel trolley bus with the 3-5 carriages is solved. The braking system suitable for the articulated rubber wheel trolley bus withthe 3-5 carriages comprises an air source and two braking units; each braking unit comprises a braking pedal; the braking pedals are arranged in cabs of the carriages at the two ends correspondingly;the braking units further comprise braking control parts and braking executing parts; the braking control parts comprise emergency braking triggering loops and braking controllers; the braking executing parts comprise steering shaft braking executing units and power shaft braking executing units; the braking units communicate with vehicle control units and pulling control units through buses; andthe braking units communicate through a bus.

The invention discloses an electric cylinder device with autonomous braking and parking braking functions. The electric cylinder device with the autonomous braking and parking braking functions comprises a main cylinder shell, a screw rod shell and a motor, wherein a piston is slidably arranged in the main cylinder shell; a first cavity D and a second cavity A are formed between the front end of the piston and the main cylinder shell as well as between the middle part of the piston and the main cylinder shell; an inner hole is formed in the middle of the back end of the piston; a compensatinghole C for communicating a liquid storage tank and the first cavity D, a liquid supply hole B for communicating the liquid storage tank and the second cavity A, and a liquid drainage hole E for communicating the first cavity D and a wheel brake are formed in the main cylinder shell; a packing cup is arranged on the front end surface of the piston; a screw rod pair and a planetary gear reduction mechanism are arranged in the screw rod shell; the front end of a screw rod stretches into the inner hole; a gap is left between the front end surface of the screw rod and the inner hole; and the motorprovides rotation power for the screw rod through the planetary gear reduction mechanism. The invention further discloses a braking system and a braking control method thereof. The braking system hasthe autonomous braking and parking braking functions, and is simple in structure, low in cost and fast in braking response.

The invention relates to a below-knee prosthesis with a power ankle. The below-knee prosthesis comprises a lower leg prosthesis, an ankle joint and a prosthesis foot plate, and is characterized in that: the ankle joint comprises two brackets which are arranged on the back top surface of the prosthesis foot plate; each bracket is connected with one side of a swinging frame through a revolving shaft; a speed reducer is arranged in the swinging frame; the top of a shell of the speed reducer is fixedly connected with the top of the swinging frame; one side of the swinging frame is connected with a motor; the output end of the motor is used for driving each stage of gear of the speed reducer to rotate; an output gear of the speed reducer is an incomplete gear; an output shaft of the incomplete gear is rotationally connected in the speed reducer, and is concentric with revolving shafts on the two brackets; the bottom end of the incomplete gear passes through a speed reducer shell, and is fixedly connected with the top surface of the prosthesis bottom plate; and the top of the swinging frame is fixedly connected with the bottom end of the lower leg prosthesis. The below-knee prosthesis can be widely applied to the production processes of human body prostheses and intelligent robot lower limbs.

The invention relates to the technical field of vehicle braking control systems and specifically provides a distributed braking system with a parking function and a method of pressure adjustment and control for the same. The system comprises a power source, a braking controller, a braking main cylinder, a main cylinder displacement sensor, a braking pedal, a pedal displacement sensor and an electric force assisting device, wherein the electric force assisting device, the main cylinder displacement sensor and the pedal displacement sensor are electrically connected to the braking controller respectively. The distributed composite braking system also comprises at least three electric cylinders, wherein the at least three electric cylinders are electrically connected to the braking controllerrespectively; the braking main cylinder is linked with the at least three electric cylinders by braking pipelines; and the electric cylinders are in one-to-one corresponding connection to wheel brakes with the same quantity on a vehicle, and a braking loop is formed by each of the electric cylinders and the corresponding wheel brake. The system and the method provided by the invention have the beneficial effects that control is flexible; braking responses are quick; and control precision of braking pressures is high, so the intelligent driving vehicle can run stably and reliability is high during braking.

The invention relates to a hybrid dual-loop brake system with various working modes, and a brake method. The hybrid dual-loop brake system comprises a manual brake loop and a brake-by-wire loop; the manual brake loop comprises a manual cylinder connected with a brake pedal, the manual cylinder is connected with a second electric cylinder through a brake pipeline, and the second electric cylinder is electrically connected with a brake controller and connected with a first brake set through a brake pipeline; and the brake-by-wire loop comprises a first electric cylinder connected with a second brake set, the brake controller connected with the first electric cylinder is connected with a pedal travel sensor, and the pedal travel sensor is connected with the manual cylinder. The hybrid dual-loop brake system and the brake method have the advantages that brake response is quick, the brake pedal sensing and brake direction stability is good, and the ground adhesion utilization rate is high;the system is simple in structure and low in cost; and the reliability is high, and the failure protection capacity is high.

The invention discloses an intelligent automobile composite line control braking system and a braking control method thereof. The braking system combines a mechanical electric control braking system with an integrated motor type electric control braking system and is independently controlled by an electronic control unit. An electromechanical braking (EMB) module consists of two brakes. An integrated motor type electric control braking IBS module consists of an integrated motor, a ball screw mechanism and a braking pressure generation unit. The ball screw mechanism is fixedly connected to theinterior of a rotor of the integrated motor, and the rotor transmits power to an output push rod of the braking pressure generation unit through the ball screw mechanism. Two inner cavities of a maincylinder of the braking pressure generation unit generate braking pressure under the push of the output push rod, and braking control over two braking wheel cylinders is achieved through electromagnetic valves. The mechanical electric control braking system is combined with the integrated motor type electric control braking system, the problems of a single braking system are solved to achieve rapid pressure generation and precise pressure control, and braking under multiple conditions can be achieved.

The invention discloses a one-way pressure-regulating quick release valve, which has the functions that: when high-pressure gas flows from an inlet of the one-way pressure-regulating quick release valve, the opening time and the outlet pressure of the one-way pressure-regulating quick release valve can be controlled by adjusting the opening pressure of a pressure-regulating valve core of the one-way pressure-regulating quick release valve; and when the high-pressure gas finishing work reversely backflows form an outlet of the one-way pressure-regulating quick release valve, the pressure-regulating valve core of the one-way pressure-regulating quick release valve is closed, a one-way valve core is opened and the high-pressure gas is quickly exhausted to the atmosphere from a quick release hole of the one-way pressure-regulating quick release valve. The one-way pressure-regulating quick release valve is especially suitable for an air-pressure brake pipeline system of an automobile; the one-way pressure-regulating quick release valve is arranged in the brake pipeline, the adjustment of brake forces of a left wheel and a right wheel is realized by adjusting the one-way pressure-regulating quick release valve, and thereby the brake deviation is effectively solved; meanwhile, the problems of non-uniformity in heating and wear of a brake and the like can be effectively solved, and thus the service life of the brake is effectively prolonged and the maintenance and repair times of the brake are reduced; the one-way pressure-regulating quick release valve has a quick release function, so that the one-way pressure-regulating quick release valve can replace a general quick release valve; and the one-way pressure-regulating quick release valve is arranged on a brake air chamber, so that the exhaust distance is shortened and shorter exhaust time and quicker brake response are obtained.

The invention relates to the technical field of grinding devices, in particular to a dustproof wall surface grinding machine. The dustproof wall surface grinding machine comprises a mounting base, wherein a rectangular groove is formed in the front end of the mounting base, a main shaft is rotationally mounted in the rectangular groove, a grinding disc is fixedly arranged on the main shaft, a connecting pipe is arranged in a driving cavity, a first fan is arranged in a round groove, a dust collecting cavity is further connected with a dust removing mechanism, and a driving mechanism is arranged in the driving cavity. When the machine works, a driving belt is tensioned through a tensioning wheel, so that a first gear and a second gear are meshed; a first tension spring is used for separating the first gear and the second gear so as to prevent a grinding disc from rotating due to the fact that a motor switch is driven by mistake; the grinding disc is attached to the wall surface, the grinding disc is driven to rotate through the driving mechanism, and the grinding efficiency is high; the rectangular groove covers the grinding area, so that dust is prevented from diffusing; and the dust in the rectangular groove is conveyed into the dust collecting cavity through the connecting pipe through the first fan, and enters the dust removal mechanism for dust removal so as to prevent thedust from scattering around.

The invention discloses an electric power-assisted brake device based on a variable-stiffness spring. The electric power-assisted brake device comprises a power-assisted cylinder, a foot bar assembly, a foot bar reset spring, an electric actuator and a brake pump assembly. A brake pump ejector rod for receiving braking force is arranged on the brake pump assembly, the electric actuator comprises an electric power assembly, a power-assisted sliding sleeve which is arranged inside the power-assisted cylinder in a sliding mode and provided with sliding driving force by the electric power assembly, the power-assisted sliding sleeve is in ejection fit with the brake pump ejector rod, the pedal reset spring is arranged in an axial through hole and is in elastic reset linkage with the head end of the foot bar assembly, and the head end of the foot bar assembly sequentially penetrates through a positioning pin through hole and the outer end of the axial through hole inside the power-assisted sliding sleeve and acts on the brake pump ejector rod in an ejection mode when sliding in the direction of the brake pump ejector rod axially. The electric power-assisted brake device has the advantages that the structural arrangement is reasonable, and foot bar brake force and electric power-assisted brake force are decoupled.

The invention discloses an EPB-based anti-lock system and an anti-lock method thereof. The EPB-based anti-lock system comprises an EPB controller, an automobile wheel speed signal source, an automobile storage battery power source, an EPB switch, a left EPB caliper and a right EPB caliper, wherein the automobile wheel speed signal source collects wheel speed signals of four wheels of an automobileand uploads the wheel speed signals to the EPB controller; the EPB controller calculates the locking degree of the rear wheel according to the wheel speed signal so as to judge the road surface condition; and the EPB controller executes a clamping force operation of the corresponding road surface on the left EPB caliper and the right EPB caliper according to different road surface conditions, andthe operation is repeated until the automobile is stopped. On the basis of an original EPB system, the anti-lock function during emergency braking is added, and the safety performance of an electronic parking system is improved.

The invention provides an electronic mechanical brake system which comprises a brake signal inputting unit, an EMB (electromechanical brake system) control unit, an EMB drive unit, and a plurality of electric brakes corresponding to a plurality of wheels respectively, wherein the signal inputting unit is used for generating brake signals and outputting the brake signals to the EMB control unit in real time; the EMB control unit is used for receiving the brake signals and outputting a plurality of paths of duty ratio signals to the EMB drive unit; the path number of the duty ratio signals is equal to that of the electric brakes; the EMB drive unit is used for receiving the duty ratio signals in real time and driving and controlling the plurality of electric brakes according to the duty ratio signals; and the plurality of electric brakes are respectively used for braking the corresponding wheels. Correspondingly, an automobile adopting the braking system is provided. The electronic mechanical brake system has the advantages of simple structure, small volume, convenience in installation, low cost, fast braking response, good braking stability, no pollution, and the like.

The invention relates to the technical field of an autonomous braking system, and concretely provides a time-sharing autonomous braking system with a failure labor backup function and a baking method.The time-sharing autonomous braking system comprises a power supply (9) and a braking controller (10) and also comprises a first electric cylinder (8a), a second electric cylinder (8b) and a labor cylinder; the first electric cylinder (8a) and the second electric cylinder (8b) are electrically connected with the braking controller; the labor cylinder is electrically connected with the first electric cylinder (8a) and the second electric cylinder (8b); the first electric cylinder (8a) and the second electric cylinder (8b) are respectively connected to two wheel brakes arranged on an automobileto form two braking loops; an electromagnetic valve is arranged between each wheel brake and the corresponding electric cylinder. The braking method provided by the invention comprises an autonomousbraking mode, a failure labor backup braking mode and a failure protection braking mode. The time-sharing autonomous braking system has the advantages that the structure is simple; the cost is low; the braking response is fast; the reliability is high; the failure protection capability is high; the braking control and the ABS function of single wheels can be realized.

The embodiment of the invention provides a braking method, a braking system and a vehicle, the braking method is used for the vehicle, the vehicle comprises wheels, an anti-lock module and an electronic parking braking module, and the braking method comprises the steps that the current braking demand value, the current wheel speed of the wheels and the activation state of the anti-lock module are obtained; wherein the current braking demand value is used for representing the acceleration required by the braking process; under the condition that the current braking demand value is larger than a first preset braking demand value, the auxiliary braking state of the electronic parking braking module is controlled according to the activation state of the anti-lock braking module; according to the current wheel speed, the locking trend of the wheel is determined; and according to the locking trend of the wheels and the activation state of the anti-locking module, the anti-locking braking state of the electronic parking braking module is controlled. In the embodiment of the invention, the dangerous working condition of wheel locking can be avoided while reliable braking of the vehicle is realized, and the braking safety of the vehicle is improved.

The invention discloses an electric jackstay which comprises an outer sleeve, an outer guide pipe, an inner guide pipe, a motor, a lead screw, a first connector and a second connector, wherein the motor and the outer guide pipe are arranged in the outer sleeve in the axial direction of the outer sleeve; the motor is connected with the lead screw; the inner guide pipe is in screw-thread fit with the lead screw; the inner guide pipe moves under guiding of the outer guide pipe; the inner guide pipe is in rotation stop fit with the outer guide pipe; the first connector and the second connector arearranged at two ends of the outer guide pipe separately; the first connector is fixed at the end part of the outer sleeve; the second connector is fixed at the end part of the inner guide pipe; and the motor is a coreless brushless motor. The electric jackstay is stable in working, unlikely to loss efficacy and long in service life, does not need an encoder to reduce the manufacturing cost, is high in efficiency, does not generate electric spark and can obtain a better electromagnetic interference inhibition effect.

The invention discloses a self-locking outer edge brake which comprises a braking force bearing support, a connecting rod, a braking arm and a jacking mechanism. One end of the connecting rod is rotatably connected with the braking force bearing support, and the other end of the connecting rod is rotatably connected with a mounting end of the braking arm. The jacking mechanism is located below the braking arm. The end face contour of a braking end of the braking arm is adaptive to a side face of a round disc to be braked. A friction plate is fixedly arranged on the end face of the braking end and is tightly attached to and fully covered on the end face of the braking end. When the braking arm is in a braking position, the friction plate is attached to the side face of the braking disc. The self-locking outer edge brake carries out braking to the cylindrical side face of the round disc to be braked like a side face of the braking disc of a coiling block and achieves the purposes of enabling the coiling block to brake, and stopping a heavy object to move. The self-locking outer edge brake is simple in structure, small in occupied space, fast in braking response, strong in braking performance, safe and reliable.

The invention relates to a device for controlling a braking arrangement on a heavy vehicle. The braking arrangement comprises a main brake, which includes braking devices (1a -f), for example disc brakes, that are each arranged to act on one of the vehicle wheels (2a-f). Furthermore, the braking arrangement comprises at least one auxiliary brake (3) and a brake control (10) with which the named main brake (1a-f) and auxiliary brake (3) are activated. When a driver activates the brake control (10), a control unit (9) in the arrangement is arranged to initiate activation of the main brakes (1a-f) and the auxiliary brake (3) and thus distributes the braking effect between these brakes in such a way that the braking effect requested by the driver is obtained in the shortest possible time and in such a way that the use of the brake devices (1a-f) of the main brake is minimised after an initial period. The invention relates to a braking system for a heavy vehicle, which comprises an arrangement described above.

The invention discloses a transmission device used for an impulse response spectrum testing stand. The impulse response spectrum testing stand comprises a stand body which comprises a stand seat, a door frame, a working stand surface and a transmission device; the transmission device comprises a pendulum bob component comprising a pendulum bob, a pendulum bob arm and a pendulum bob shaft; the transmission device also comprises a worm and gear deceleration motor which is fixedly connected and is opposite to the door frame; the pendulum bob shaft is in transmission connection with the worm and gear deceleration motor; a power output shaft of a worm and gear deceleration motor coaxially drives the pendulum bob shaft to rotate so as to lift the pendulum bob; the power output shaft and the pendulum bob shaft are in transmission connection through a tooth-embed clutch; and, furthermore, the transmission device also comprises a brake which is acting on the pendulum shaft. The invention simplifies the device structure, eliminates the post adjustment and provides convenience to post maintenance. Besides, the invention also has a self-locking function, can realize the power off protection and is safe and reliable.