154results about How to "Improve braking reliability" patented technology

A brake unit that allows the vehicle to evacuate safely in the event of brake failure while maintaining a braking performance. The brake unit is mounted on a vehicle together with a motor drive unit 2 to control brake force in accordance with a stroke of a brake pedal and a pedal force. Each brake system comprises: a stroke sensor; a pedal force sensor; a brake mechanism applying brake force to a driveshaft; a controller controlling the brake mechanism based on the stroke and the pedal force; and a powersource supplying electricity to the brake mechanism and the controller. The first controller 13 and the second controller support each other to control brake force.

A method for performing an emergency stop with an elevator and a safety arrangement of an elevator are disclosed. In the method, when an emergency stop criterion is fulfilled, the elevator car is driven with the electric motor of the hoisting machine to a stop with a given deceleration profile.

The invention discloses a rail train and a shaft box structure of the rail train. The shaft box structure comprises a shaft box body and a positioning joint installing base (112), a bearing installing cavity (1a) is formed in the shaft box body, the positioning joint installing base (112) is provided with an installing cavity used for installing a positioning joint, the longitudinal center line of the shaft box body is parallel to the longitudinal center face of the positioning joint installing base (112), and the longitudinal center face of the positioning joint installing base (112) deviates to the outer side relative to the longitudinal center face of the shaft box body. Accordingly, large space can be reserved for a brake clamp, and the brake clamp and a wheel pair are convenient to install and replace. Compared with the prior art, the shaft box structure is optimized, a brake clamp installing position has a larger available space, installation of relatively large brake clamps is facilitated, braking capacity is improved, and the performance of the whole train is improved. Besides, the positioning joint is installed close to the outer side so that the positioning joint can be easily installed and detached.

The invention provides an unmanned vehicle braking control system and method. The unmanned vehicle braking control system comprises an electric cylinder, a braking pipeline system, a data collection card, a controller, a decision making layer, a wheel speed sensor for detecting vehicle speed and an oil pressure meter for detecting braking pressure of the braking pipeline system, the data collection card is used for collecting data of the wheel speed sensor and the oil pressure meter, the decision making layer sends an expected vehicle speed signal to the controller, and the controller is used for collecting data transmitted by the decision making layer and data of the oil pressure meter. Braking effect controllable in braking force is accurately realized by collecting current vehicle speed and current braking pressure, comparing them with expected vehicle speed and expected braking pressure and controlling extension and contraction of the electric cylinder.

A brake fluid pressure control device controls brake fluid pressures through control of fluid pressure control valves operated in accordance with control signals from, for example, a computer. Signal lines for supplying control signals to control circuits controlling coils of linear valve devices for some wheels (e.g., front-left and rear-right wheels) are connected to a brake ECU by a connector, and signal lines for supplying control signals to the control circuits controlling coils of linear valve devices for other wheels (e.g., front-right and rear-left wheels) are connected to the brake ECU by a different connector. Thus, even if one of the connectors starts operating abnormally, it is possible to supply control signals via the signal lines connected by the other connector and control linear valve devices for some of the wheels (e.g., a pair of diagonally located wheels).

A reinforcement type electromagnetic mechanical brake is composed of a movable board, a disc spring, a fixing shell, a coil, a first support, a mandrel pushing rod, a first hinge pin assembly, a second hinge pin assembly, a swing arm, a first nut, a tightly-pulling rod, a second nut, a pair of first calipers, a first friction plate, a brake disc, a second friction plate, a third hinge pin assembly, a third friction plate, a pair of second calipers, a fourth friction plate, a pushing cylinder, a second support, a thrust ball, a thrust board, a locating bolt, a first pulling rod, a sleeve, a second pulling rod, a baffle ring, a bolt and an extruding board assembly. The reinforcement type electromagnetic mechanical brake has the advantages that cost is effectively saved, the installation space is saved, energy consumption is low, the response speed is high, repair is convenient, the structure is simple, cost is low, the braking torque can be rapidly improved through effective use of a force-amplifier, integrated control over an ABS, an EDB and the like can be achieved conveniently, brake temperature rise can be effectively reduced through the friction plates, the braking efficiency is improved, and the traveling safety and the braking reliability are improved.

The invention provides an anti-falling device and an anti-falling method. The anti-falling device comprises a guide rail, a self-locking device, a safety belt and the like, wherein the guide rail is provided with at least one clamping seat which protrudes the matrix surface of the guide rail, the upper end face of the clamping seat is a clamping face clamped and braked with a clamping block of the self-locking device, and the height of the clamping seat is gradually reduced from the clamping face of the upper end to the part of the lower end protruding the matrix of the guide rail; and the self-locking device comprises the clamping block and a body, wherein the clamping block is movably connected with the body through a rotating pin shaft, the clamping block is provided with a clamping head, the clamping block can rotate by using the rotating pin shaft as a center, and the clamping head extends out of the bottom surface of the body to realize locking braking with the clamping seat on the guide rail. The anti-falling device has better stress performance, and has safer and more reliable braking performance between the guide rail and the self-locking device; and by using the device and the method, normal action and overhauling operation of an operator are not affected at the same time of protecting the safety of the operator.

The invention discloses a brake-by-wire device for a driverless racing car. The brake-by-wire device for the driverless racing car comprises a brake motor, a reducer, a driving rocker arm, a right angle pulling rod and a driving pilling plate lifting lug, wherein the reducer is fixedly connected with an output shaft of the brake motor, and two baffles are arranged near the circumference of an output shaft of the reducer in an opposite mode; one end of the driving rocker arm is fixedly connected with the output shaft of the reducer, a circular through hole is formed in the upper end of the driving rocker arm, and two grooves are formed in the inner wall of the through hole along the circumference in an opposite mode; the baffles are matched with the grooves in an opposite mode; one end of the right angle pulling rod is hinged to the other end of the driving rocker arm; and one end of the driving pulling plate lifting lug is hinged to the other end of the right angle pulling rod, and theother end of the driving pilling plate lifting lug is hinged to the upper end of a brake pedal. According to the brake-by-wire device for the driverless racing car, under the premise of braking reliability, the brake and the unmanned brake do not interfere with each other.

The invention discloses a vehicle composite braking control method, device and system, as well as a vehicle composite braking controller. The method comprises the following steps: calculating to determine a total braking force needed by a vehicle, and calculating to determine exerted braking forces needed by various braking modes, respectively distributing the braking forces to the corresponding controller, and realizing vehicle braking by the controller in response to the distributed output braking forces. The method, device and system, as well as the controller are capable of solving problems that in the prior art, braking force response is slow, the efficiency is low and the reliability is poor, and have the advantages of better braking control efficiency, better reliability and the like.

The invention relates to a brake and power equipment. The brake comprises a first brake part, a second brake part and a drive device, wherein the first brake part is rotationally arranged around the center axis; the second brake part is non-rotationally arranged in the circumferential direction relative to the center axis; the drive device is used for driving the second brake part to reciprocate along the center axis to control the brake to be switched between a brake state and a non-brake state; an axial bulge extending axially along the center axis is arranged at one of the first brake part and the second brake part, and an accommodation space is formed in the other brake part; the axial bulge is located in the accommodation space and forms circumferential limit fit when the brake is in the brake state; when the brake is in the non-brake state, the axial bulge is separated from the accommodation space, so that circumferential limit fit is eliminated. According to the brake, a traditional structure that braking is realized through brake pads is eliminated, the service life of the brake is prolonged, and the safety and the reliability of the brake are improved.

A toggle-rod-boosted electromechanical brake consists of a brake disc, a caliper, a support, a first pin shaft assembly, a connecting component, a second pin shaft assembly, a first connecting rod, a third pin shaft assembly, a fourth pin shaft assembly, a second connecting rod, a fifth pin shaft assembly, a motor speed reducer assembly, a first friction plate, a second friction plate, a third connecting rod, a sixth pin shaft assembly, a ball screw assembly, a push cylinder and an opening cylinder sleeve. The toggle-rod-boosted electromechanical brake can effectively save cost and reduce the installing space, has the advantages of low energy consumption, high response speed, convenience in maintenance, simple structure, low cost and the like, can effectively use a boosting mechanism for rapidly increasing the braking torque, can conveniently implement ABS, EDB and other integrated control, and improves the traffic safety and the brake reliability.

The invention discloses an electronic mechanical brake, and belongs to the technical field of automobile braking. The electronic mechanical brake comprises a shell, a ball screw structure and a piston. A clamp is arranged on one side of the shell and comprises two clamping claws capable of oppositely moving; each of the two clamping claws is provided with a friction plate, the two friction platesare right opposite to each other, and a penetration cylinder hole is formed in the other side of the shell. The ball screw structure is arranged in the cylinder hole and comprises a screw, a nut and aplurality of steel balls, one end of the screw penetrates out of the cylinder hole and is in driving connection with an executer, the nut can movably sleeve the outer side wall of the screw in the length direction of the screw, two clamping and connecting tables are arranged on the outer side of the nut, and the multiple steel balls are arranged between the nut and the screw. The piston is arranged in the cylinder hole, one end of the piston is connected with one clamping claw, and the other end of the piston movably makes contact with the nut in the screw length direction. According to the provided electronic mechanical brake, the structure is simplified, the integral size is reduced, and the braking efficiency is improved.

The invention discloses an electronical control air pressure regulating valve for a commercial vehicle line control brake system and a control method thereof, and relates to the technical field of vehicle braking. The regulating valve comprises a motor, a valve body and a valve cover, the valve cover is installed at two ends of the valve body, the side wall of the valve body is provided with an air inlet, an air outlet and an exhaust port, the valve body internally comprises a power cavity, a displacement adjusting cavity and an air inlet cavity, a coupling, a screw and a screw sleeve are arranged in the power cavity, the screw sleeve is sleeved on the periphery of the screw, the coupling is connected with the screw and a rotating shaft of the motor; a micromicrowatt, a traction member andan ejector pin are arranged in the displacement adjusting cavity, the micromicrowatt is in contact with the screw sleeve, the traction member is respectively and elastically connected with the micromicrowatt and the ejector pin, a switch piston and a return spring are arranged in the air inlet cavity, the switch piston is in contact with the ejector pin, the switch piston is connected with the return spring, and the return spring is fixedly connected with the valve cover. The embodiment of the invention can solve the problem that the regulating valve in the prior art uses the gas as a mediumfor transmitting signals, and has asynchronized braking of each wheel, uncoordinated braking and small braking force.

A combined electronic mechanical brake is composed of a motor, a bracket, a speed reducer, a first clamp, a first friction plate, a second friction plate, a brake disc, a third friction plate, a second clamp, a fourth friction plate, a fixed bracket, a thrusting plate, a first ball bar, a sleeve, a second ball bar, a fixed bolt, a baffle ring, a thrusting ball, a screw rod, a nut, a first thrusting cylinder, a wear resistant sleeve, a second thrusting cylinder and a positioning bolt. When in use, the combined electronic mechanical brake can effectively reduce the motor power and save mounting space, has the advantages of low energy consumption, high response speed, convenience in maintenance, simplicity in structure, low cost and the like, can effectively utilize a force amplifying mechanism to quickly increase the braking torque, so as to conveniently realize ABS, EDB, and other integrated control, adopts multiple friction plates to effectively reduce the temperature rise during braking, increase the braking efficiency, and improve the driving safety and the braking reliability.