769 results about "Parking brake" patented technology

An apparatus for a brake drum having a drum brake assembly with first and second brake shoes includes a motor and a planetary gear train for receiving torque from the motor and having an output gear. A ball ramp assembly receives torque from the output gear and has ends aligned with the respective first and second brake shoes. The motor is actuatable for lengthening the ball ramp assembly to move the brake shoes and apply braking force to the brake drum. A bi-stable locking mechanism selectively locks the planetary gear train to apply a parking brake to the brake drum.

The invention discloses a redundant braking control method of an automatic driving vehicle and a storage medium, which are applied to a vehicle control unit. According to the method, when it is detected that an automatic driving module, anti-collision early warning or remote monitoring triggers a braking demand, the target deceleration is calculated in combination with the vehicle speed and the obstacle distance. By collecting the actual acceleration, the parking air chamber air pressure and the motor torque, the total braking force is estimated, the electronic parking braking force is separated out, and then the road adhesion coefficient is calculated. And in the redundant braking mode, according to the target deceleration, the attachment condition and the capacity upper limit of the two systems, performance indexes including deceleration deviation and a parking penalty term are constructed, and the target motor deceleration and the target electronic parking deceleration are obtained through joint distribution. And finally, the target parking deceleration is converted into target air pressure through the deceleration air pressure mapping table containing the online correction amount, the air pressure is adjusted through closed-loop control, and accurate and stable redundant service braking is achieved.

The utility model discloses a double-cylinder EPB (electronic parking brake). The brake comprises a driving mechanism assembly, a shell assembly, a transmission mechanism assembly, a friction plate assembly and a bracket assembly, the driving mechanism assembly comprises a motor and a reduction gear box, and the driving mechanism assembly outputs motor torque through two output ends; the shell assembly serves as an external structure of the brake and accommodates and fixes internal mechanical components. The transmission mechanism assembly comprises two transmission mechanisms which convert motor torque output by the two output ends of the driving mechanism assembly into axial motion to drive a piston to move. The friction plate assemblies comprise an inner friction plate assembly and an outer friction plate assembly which are driven by the piston to clamp the brake disc; the support assembly is connected with the shell assembly through bolts, fixes and supports the brake, and guides and limits path movement of a piston and a friction plate in the braking process.

The invention relates to a driving system for a hybrid tractor, which comprises an engine, a generator, a front motor and a rear motor, and the engine is in transmission connection with a PTO (Power Take Off); the front axle input shaft is in transmission connection with the front motor and the normally-combined clutch input shaft, a normally-combined clutch is arranged on the normally-combined clutch input shaft, a parking brake is arranged on the normally-combined clutch input shaft, and the parking brake is connected with the rear axle. An input shaft of the normally-combined clutch is in transmission connection with a small cone shaft, a mode switching clutch is arranged on the small cone shaft, the small cone shaft is in transmission connection with the input shaft of the normally-combined clutch and a rear motor, and one end of a sun wheel shaft is connected with a rear wheel through a planetary gear mechanism. And a service brake is arranged on the sun wheel shaft. The normally-combined clutch input shaft, the normally-combined clutch and the transmission mechanism are arranged between the front axle and the rear axle, so that the four-wheel braking function is achieved.

The electromagnet for the EMB parking braking device comprises an electromagnet assembly, a ratchet wheel, a pawl and a pin shaft rolling wheel assembly, the electromagnet assembly comprises a shell and a push rod, the push rod is arranged in the shell in the axial direction, the front end of the push rod is connected with a U-shaped connecting piece, the pin shaft rolling wheel assembly comprises a first pin shaft, and a rolling wheel is arranged on the first pin shaft; the rolling wheel can rotate around the axis of the first pin shaft, a kidney-shaped through hole is formed in the pawl, the first pin shaft penetrates through the kidney-shaped through hole, the rolling wheel is located in the kidney-shaped through hole, the two ends of the first pin shaft are connected to the U-shaped connecting piece, and the rolling wheel can roll in the kidney-shaped through hole in the length direction of the kidney-shaped through hole. The U-shaped connecting piece is hinged to the pawl through the pin shaft rolling wheel assembly. One end of the pawl close to the pin roll roller assembly can be meshed with the ratchet wheel, and the other end is rotationally connected to the shell through a second pin roll. Lateral component force generated by the pawl on the push rod can be eliminated through rotation of the roller, so that deformation of the push rod is avoided, and smooth movement of the pawl is guaranteed.

The invention provides a vehicle braking control method and system and electronic equipment, and relates to the field of vehicle braking control. According to the method, when a hydraulic braking system and a wheel speed sensor fail at the same time, vehicle state information can be obtained through an inertial sensor of a vehicle; and an accurate braking instruction is generated to control the parking brake to carry out emergency braking on the vehicle, so that the potential safety hazard that the parking brake cannot be controlled through an electronic hand brake to carry out emergency braking on the vehicle when a hydraulic braking system and a wheel speed sensor simultaneously fail in the prior art is solved.

The invention discloses parking release equipment and a parking release method of an electronic parking brake system. The system comprises a main control module, a parking release module and a parking release module, the main control module is electrically connected with the relay module through the H-bridge module, the relay module is electrically connected with the parking motor, and the H-bridge module performs rotation control on the parking motor; the main control module is also directly and electrically connected with the relay module to execute start-stop control; an over-current detection module is electrically connected between the main control module and the H-bridge module and between the main control module and the relay module; the power management module takes power from the vehicle-mounted storage battery or the cigarette lighter interface; the input module is electrically connected with the main control module for inputting a control instruction. Therefore, when the electronic parking brake system is locked due to a fault, one end of the electronic parking brake system is directly powered from a vehicle-mounted storage battery or a cigar lighter interface of the vehicle, and the other end of the electronic parking brake system is connected into the parking motor to supply power to execute driving control, so that the motor controllably rotates forwards / reversely / stops, the parking state can be relieved without intervention of a vehicle machine, external equipment is not needed, and meanwhile, the parking motor is not damaged.

The disclosure relates to a method for operating an electropneumatic parking brake module for an electronically controllable pneumatic brake system for a vehicle, in particular a commercial vehicle, having a supply port for receiving a supply pressure, at least one parking brake port for the connection of at least one parking brake cylinder, a main valve assembly which receives the supply pressure and is configured to output a spring brake pressure at the parking brake port in dependence on a control pressure, and a pilot valve assembly which receives the supply pressure and is to provide the control pressure, wherein the pilot valve assembly has a bistable valve which can be switched between a first air admission position and a second air release position, and a control unit for providing first and second switch signals to the pilot valve assembly.

A brake control system for a vehicle includes electropneumatic modules that control fluid pressure to brake actuators for wheel brakes to apply and release service and parking brakes. A parking brake controller (i) determines whether the parking brake is in an applied state or a released state, (ii) whether a speed of the vehicle meets a predetermined condition relative to a predetermined speed and (iii) whether a command to move the service brake to an applied state has been issued by a service brake controller. When conditions (i), (ii) and (iii) are present, the controller identifies an absence of communication on a communications bus indicative of a failure in the service brake controller and / or the communications bus and thereafter generates a control signal configured to cause to move the parking brake from the released state to an applied state.

A safety system for a towing vehicle and a towed object including a towing vehicle coupling, a towed vehicle connection point that is engageable with the towing vehicle coupling, a coupling lock that is movable between a locked and unlocked positions, a lock sensor that is operative to detect whether the coupling lock is in the locked or unlocked position, a brake system that is moveable between a brake system engaged position and a brake system disengaged position, a controller, wherein the controller is in operative connection with the lock sensor and the brake system, and wherein the controller is operative to receive signals from the lock sensor, wherein in response to a signal from the lock sensor indicating the coupling lock is in the locked position, the controller is operative to enable the brake system to be in the disengaged position through manipulation of manual parking brake valve.

Implementations of a drum to disc brake adapter may comprise a first plurality of mounting lobes surrounding a central opening, the first plurality of mounting lobes located in a first plane on a first side of the adapter and a second plurality of mounting lobes surrounding the central opening, the second plurality of mounting lobes located in a second plane on a second side of the adapter, the second plane parallel to the first plane. The first plurality of mounting lobes is configured to interface with an axle housing and the second plurality of mounting lobes is configured to interface with a disc brake assembly. Each mounting lobe of the first and second pluralities of mounting lobes comprises an opening therethrough. The adapter is configured to preserve use of the emergency or parking brake of a vehicle.

According to an aspect, there is provided an elevator parking brake comprising brake pads configured to provide a braking force against a guide rail in a loading and unloading situation of an elevator car; and at least one sensor. The elevator parking brake is configured to allow a predetermined amount of movement within the elevator parking brake in the loading and unloading situation of the elevator car, and the at least one sensor is configured to provide at least one indication associated with the movement within the elevator parking brake in the loading and unloading situation of the elevator car.

A method of controlling an electro-mechanical brake device, includes: switching a central electronic control unit (ECU) to an awake mode based on a wake-up signal; transmitting a signal such that a wheel ECU is switched from a sleep mode to the awake mode; when a braking input is detected, supplying a current to a motor mounted on an electro-mechanical brake (EMB) using current control to generate a braking force; when a parking braking force is less than a required braking force, controlling the wheel ECU to release the parking braking force and generate the required braking force, and when the parking braking force is greater than or equal to the required braking force, releasing the parking braking force and maintaining the braking force generated in a wheel; when the braking force reaches the required braking force or the braking force is maintained, switching the current control to position control.

The utility model relates to the field of brake chambers, in particular to a novel Y-shaped sealing ring piston type brake chamber which comprises a service brake chamber and a parking brake chamber, the parking brake chamber is provided with a piston and a piston rod, the piston is arranged in the parking brake chamber in a sliding mode, the piston rod is connected to the left side of the piston, and the Y-shaped sealing ring is arranged on the right side of the piston. A first groove is annularly formed in the outer portion of the right side of the piston, a Y-shaped sealing ring is arranged in the first groove, a sealing lip of the Y-shaped sealing ring is arranged in the mode that the outside is low and the inside is high, a second groove located at the right end of the first groove is annularly formed in the piston, and a sealing ring is arranged in the second groove. According to the design that the lips of the Y-shaped sealing ring on the outer side of the piston of the parking braking air chamber are low outside and high inside, stress distribution is changed, the lips on the inner side are tightly attached to the wall of the air chamber under pressure, inward turning deformation caused by uneven stress is reduced, and the service life of the sealing ring is prolonged.

A work machine system includes: a machine main body to which a work implement is attached; a travel unit that causes the machine main body to travel; an inclination sensor that senses a degree of inclination of the machine main body; an operator presence sensor that senses presence of an operator; a parking brake that brakes the travel unit; an operation device that receives an operation of activating the parking brake; and a controller that performs, when the operation device does not receive the operation, control to prevent the parking brake from being forgotten to be applied, on conditions that the presence of the operator is not sensed and the machine main body is inclined.

A braking apparatus for a vehicle is disclosed herein. According to an embodiment of the present disclosure, a braking apparatus for a vehicle is provided, the apparatus including: a front wheel braking unit configured to brake a front wheel of the vehicle; a rear wheel braking unit configured to brake a rear wheel of the vehicle using an electro-mechanical brake; a main control unit configured to control the front wheel braking unit using hydraulic pressure and to transfer a braking command to the rear wheel braking unit; and an auxiliary control unit configured to enable redundancy control of the rear wheel braking unit, wherein the front wheel braking unit further comprises at least one electronic parking brake caliper disposed on the front wheel, and wherein the electronic parking brake caliper is connected to the auxiliary control unit and controlled by the redundancy control unit.

The invention relates to a pressure plate and a pressure plate device for a brake actuating mechanism, a service brake actuating mechanism, a parking brake actuating mechanism, a brake assembly and a vehicle. Specifically, the invention relates to a pressure plate (100) for a brake actuator, the pressure plate (100) for a brake actuator comprising a base section (102) and a peripheral radial wall (104) extending from the base section in a longitudinal direction (L). A peripheral rim (106) is disposed on a distal end (108) of the peripheral radial wall for connection to a non-pressure plate of an actuator. An inlet port (110) is provided for receiving a pressurized fluid (CA). A central opening (112) is arranged on the base section and is configured to receive a pressure rod of the spring brake unit. The connecting element (114) is configured to mate with a corresponding mating connecting element of a cover configured to seal and close the central opening, and to mate with a corresponding mating connecting element of the spring braking unit such that a pressure rod of the spring braking unit is aligned with the central opening.

The utility model relates to a hydraulic hand brake valve which comprises the following components: a valve body which comprises an oil inlet, an oil return port and an oil outlet; the valve element is provided with an oil way groove, and the oil way groove is connected with the oil return opening and the oil inlet; the balance spring is used for adjusting movement of the valve element and keeping the pressure of the oil outlet; when the valve element descends, the oil inlet and the oil return opening are disconnected, and the pressure of the oil outlet is increased. And when the pressure of the oil outlet and the compression amount of the balance spring are in a balanced state, the parking braking force required by the target vehicle is achieved. According to the hydraulic hand brake valve, the oil inlet, the oil return port and the oil outlet are formed, the balance spring is introduced, the internal structure of the hydraulic hand brake valve is simplified, the number of parts is reduced, meanwhile, the overall dimension is effectively controlled, the production cost of the hydraulic hand brake valve is reduced, and the assembly efficiency of the hydraulic hand brake valve is improved. And meanwhile, the hydraulic hand brake valve can be more suitable for the spatial layout requirement of the light truck.

The application provides a half-toothed worm electromechanical brake and method, relates to the brake technical field, and the brake comprises a linear and rotary motion conversion assembly, a piston, a brake caliper, a brake shoe, a half-toothed worm, an output worm gear, a parking drive unit and a service brake unit, the parking drive unit and the half-toothed worm are matched, the service brake unit and the output worm gear are matched, and the half-toothed worm and the output worm gear are matched, so that the integrated configuration design with the service brake and the parking brake quick switching capability is realized, the structure has high integration degree, is stable and reliable in long-term use, has high meshing transmission precision, and the technical problems of the existing electromechanical brake, such as complex structure, poor long-term use stability and poor precision, are solved.

The invention discloses a brake-by-wire booster pressure control method, electronic equipment and a vehicle, and belongs to the technical field of vehicles. The method comprises the following steps: determining the braking demand pressure of a driver according to a pedal travel sensor signal, a driving mode signal and a current vehicle speed; determining an external brake demand pressure according to the external brake request signal; determining comfortable parking brake pressure according to the current vehicle speed and the current deceleration; brake pressure needed by the ramp is determined according to the gradient sensor signal and the wheel speed sensor signal; acquiring an anti-lock control pressure; determining a braking mode according to the current vehicle speed; and brake pressure output is determined according to the brake demand pressure of the driver, the external brake demand pressure, the comfortable parking brake pressure, the brake pressure needed by the ramp, the anti-lock control pressure and the brake mode. By formulating pressure decision logic and integrating multi-source requests, a coordination mechanism of'maximum value demand and minimum value constraint security 'is proposed for the first time, and system response is ensured to be safe and accurate.

1. The name of the design product: parking device (with canopy). 2. The use of the design product: for parking device. 3. The design features of the design product: in shape. 4. The picture or photo that best indicates the design features: perspective view 1.

This application discloses a vehicle gear control method, device, equipment, and storage medium, belonging to the field of vehicle technology. The method controls the vehicle to park via an electronic parking brake system when shifting from a non-parking gear to a parking gear, and releases the vehicle from parking via the same electronic parking brake system when shifting from a parking gear to a non-parking gear. Therefore, this method eliminates the parking gear locking mechanism, using an electronic parking brake system instead. The electronic parking brake system is activated during shifts between parking and non-parking gears, thus reducing vehicle costs while still enabling parking functionality in the parking gear position.

1. The name of the design product: parking device (without canopy). 2. The use of the design product: for parking device. 3. The design points of the design product: in shape. 4. The picture or photo that best indicates the design points: perspective view 1.

The utility model discloses a parking braking mechanism of an electronic mechanical braking system, which is characterized in that a motor is arranged on a supporting shell, and a motor gear and a ratchet wheel are assembled on an output shaft of the motor; the pawl fixing shaft is installed on the supporting shell and used for supporting the pawl. One end of the pawl is assembled on the electromagnet assembly, and the other end is assembled on the pawl fixing shaft and matched with the ratchet wheel; during service braking, the electromagnet assembly is powered on and closed to generate electromagnetic force, the middle shaft of the electromagnet assembly is pushed to eject the pawl upwards, and the ratchet wheel and the pawl are separated; during parking braking, the electromagnet assembly is powered off and has no electromagnetic force, the middle shaft of the electromagnet assembly returns, the pawl installed at one end automatically resets along with the middle shaft, the pawl is clamped in the ratchet wheel groove to lock the mechanism, the motor gear is prevented from overturning, and the parking function is achieved.

A motor drive circuit comprising: a first motor (111) and a second motor (112) for releasing or actuating a parking brake applied to different wheels (101, 103, 105, 107); and a first ECU (10) and a second ECU (20) for controlling the drive of the first motor (111) and the second motor (112), respectively, wherein the second ECU (20) is prevented from interfering with the drive of the first motor (111) and the second motor (112), while the first ECU (10) drives the first motor (111) and the second motor (112), and controls the drive of the first motor (111) and the second motor (112) only when an anomaly is present in the first ECU (10), and the first ECU (10) has the following features: a first MCU (11) for confirming a release or actuation state of an electronic parking brake; a first control device (12) for outputting a switching control signal according to the control of the first MCU (11); a first power supply device (13) which is switched according to a switching control signal from the first control device (12) to change the direction of a current and to supply the first motor (111) and the second motor (112) with the current respectively; and a first selection device (15) for selectively supplying the first motor (111) and the second motor (112) with the current from the first power supply device (13), or for controlling the supply of the first power supply device (13) with a current from a battery (BAT).

The application discloses a vehicle deceleration braking method, comprising the following steps: sending braking request information to an electronic parking brake system; in response to the received braking request information, sending a deceleration braking signal to an electronic brake booster through the electronic parking brake system; in response to the received deceleration braking signal, activating an electronic control deceleration function by using the electronic brake booster, and actively pressurizing a brake pipeline of the vehicle by using the electronic brake booster through a preset braking execution mode, so that the vehicle realizes deceleration braking. The vehicle deceleration braking method provided by the application can realize the electronic control deceleration function and achieve the purpose of safe deceleration parking on a vehicle without a vehicle body electronic stability control system, only by using the electronic parking brake system and the electronic brake booster.

The utility model discloses an explosion-proof diesel engine trackless rubber-tyred vehicle door opening brake protection device which comprises a door opening control valve, a parking brake, a booster pump, a control valve and a safety control device, and the door opening control valve is connected with the safety control device, the booster pump, the control valve and the parking brake through a brake pressure pipeline. Through the fixing mechanism with unique design, the opening process of the cover is greatly simplified, an operator only needs to pull the sliding block upwards to enable the first clamping block to be separated from the first clamping groove, then pulls the side plate outwards to enable the second clamping block to be separated from the second clamping groove, and then the cover can be taken down; and then internal parts of the door opening control valve can be maintained, a wide operation space is provided for maintenance and overhaul of the internal parts such as the door position feeler lever, the clamping ring and the control valve element, and compared with the prior art, the maintenance time is remarkably shortened, the labor cost is reduced, and the equipment maintenance efficiency is greatly improved.

The invention discloses a parking braking mechanism of an electronic mechanical braking system. The parking braking mechanism comprises a valve block (1), a flange plate (2), a speed reducing mechanism module (3), a hydraulic cylinder body module (4), a simulator cylinder body (5), an ECU controller (6), a driving motor module (7) and a liquid storage tank (8). According to the parking braking mechanism of the electronic mechanical braking system, modular design is adopted, the machining difficulty of a single assembly is greatly reduced, the process assemblability is optimized, the assembly flexibility of a production line is improved, and the assembly process is simpler and more reliable.

A brake system for a commercial vehicle, the vehicle comprising at least one front axle and at least one rear axle, the brake system comprising a redundant electro-pneumatic service brake system and an electro-pneumatic parking brake system, at least one axle being equipped with electro-pneumatic means comprising redundant electrical and / or electronic means, the control circuit is configured to control two independent electro-pneumatic circuits. At least one axle is equipped with a two-channel electro-pneumatic device with redundant electrical / electronic devices configured to control two separate pneumatic circuits, one of which is configured to control one or more service brake actuators associated with the at least one axle, and the other one of which is configured to control one or more service brake actuators associated with the at least one axle. The other circuit is configured to control one or more parking brake actuators associated therewith. The two-channel electro-pneumatic device includes a redundant axle module including a single-channel electro-pneumatic regulator and a single-channel electronic parking brake module, forming an integrated redundant electronic service brake control unit and an integrated electronic parking brake control unit.