2394results about "Braking element arrangements" patented technology

Disclosed is a wheel cylinder and a drum brake having the same, in which the number of position as well as other elements accompanied with the piston may be reduced, resulting in reduced manufacturing cost.

The invention discloses a multi-parameter monitoring and intelligent early warning system and method for a mine car dry disc braking device. The system comprises a data processing module, and a high-temperature fiber grating sensor, a laser displacement sensor, a piezoelectric vibration sensor, an industrial camera and an early warning execution module which are in signal connection with the data processing module. The data processing module corrects and processes the acquired temperature signal, thickness signal, vibration frequency signal and surface image signal, judges the wear state of the current brake device according to the signal processing result, and judges whether to send an early warning signal to the early warning execution module or not according to the wear state; and the early warning execution module implements corresponding early warning action according to the early warning signal. According to the method, the problem of misjudgment caused by single parameter monitoring is effectively solved, and the fault recognition accuracy is remarkably improved through multi-dimensional data cross validation. Seamless connection from state monitoring to safety protection is achieved through a closed-loop control system. And the multi-sensor cooperative working mode can effectively ensure the detection precision.

A system is operable for controlling a force applied on a trailer being towed by a vehicle is described to a desired force Fd. The trailer has brakes and an optional motor for providing a propelling force to the trailer. A force sensor senses fore-aft forces between the vehicle and trailer at all times while the trailer is being towed. A controller receives signals from the force sensor and is operatively connected to the trailer brakes and the motor. The system controls the force between a towing vehicle and a trailer to the desired force Fd, by any one of: (a) operating the brakes to apply a braking force to the trailer; (b) activating the motor to apply a propelling force to the trailer; and (c) operating the brakes and activating the motor to apply both a braking and a propelling force to the trailer.

The invention is suitable for the technical field of automobile chassis, and provides an angle module system and a modular extensible chassis, and the angle module system adopts an unequal-length double-wishbone suspension and has good geometric kinematics characteristics. And the offset distance of the main pin is reasonably controlled through the design of steering knuckle parts. By adopting the angle module bracket, the efficient integration of the driving unit and the frame structure is realized, the number of connecting points of the angle module system and the chassis is reduced, and the serialization, integration and modularization of the chassis system are facilitated. A distributed main pin steering gear is adopted, and the geometrical shape design of upper and lower control arms of the suspension is matched, so that wheels have a larger turning angle range, and the maneuverability is improved. In addition, the modular extensible chassis adopts modular design, and the number of shafts can be flexibly configured according to carrying requirements.

A brake apparatus for a vehicle may include: a torque member having a pair of brake pads installed therein and spaced apart from each other, and configured to surround a brake disk; a caliper configured to cover the torque member, and having a gravitational center adjuster configured to adjust the position of a gravitational center toward the brake disk; a pair of guide rods configured to connect the torque member and the caliper, such that the caliper is slidably coupled to the torque member; and an actuator mounted on the caliper.

Provided is an electric drum brake system, including: an electric drum brake configured to be driven by an electric motor; a current sensor configured to detect a current input to the electric motor; and a controller configured to, when parking is released, determine a parking release time based on a temperature of the electric drum brake, and when a maintenance time reaches the determined parking release time, end a parking release operation by stopping the electric motor, the maintenance time being a period of time while a state where a motor current detected by the current sensor reaches a target current is maintained.

A vehicle control method and apparatus are provided, and relate to the field of electric vehicle technologies. The method includes: calculating a first energy recovery torque based on a first traveling parameter of a vehicle, where the first traveling parameter includes a yaw velocity; and controlling, based on the first energy recovery torque, the vehicle to perform energy recovery. The method helps ensure traveling safety of the vehicle and driving experience.

The utility model provides a wheel hub motor parking mechanism which comprises a base, a locking disc, a clamping jaw and a linear push-pull mechanism, and the base is fixed to the side, not rotating along with wheels, of a wheel hub motor; the locking disc is rotationally arranged in the base and fixed to a rotating shaft of the hub motor, the locking disc comprises a protruding block, and the protruding block deviates from the axis of the rotating shaft of the hub motor; the number of the clamping jaws is two, the opposite ends of the clamping jaws are hinged into the base, and the protruding block selectively abuts against one of the two clamping jaws. According to the hub motor parking mechanism, the locking disc and the clamping jaw are arranged, parking torque generated by traditional friction force is changed into a parking top block limiting mode to provide the parking torque, the parking torque is formed more easily, and after the forming mode of the parking torque is changed, the parking torque is not limited to the friction force between the brake disc and the parking mechanism any more; instead, depending on the yield limit of the material, larger parking torque is provided by fully utilizing structural characteristics and material characteristics, and the number of parts of the parking device is reduced.

The invention discloses an assembly type L-shaped transfer trolley, and relates to the field of transfer trolleys, the assembly type L-shaped transfer trolley comprises two traction transfer trolleys and two follow-up transfer trolleys, the two traction transfer trolleys and the two follow-up transfer trolleys are all provided with L-shaped assembly frames, and every two adjacent L-shaped assembly frames are movably assembled through a plurality of bolts; and supporting seats are mounted on the top sides of the two traction transfer trolleys and the two follow-up transfer trolleys. It needs to be explained that in the embodiment of the invention, when the traction transfer trolley moves, the transverse detection frame drives the sweeping brush to move, the road surface where the traction transfer trolley moves forwards is cleaned, and smooth transfer of equipment is guaranteed; when the road surface is uneven, the L-shaped pressing frame moves downwards to drive the brake sleeve to brake the multiple traction wheels, and the traction transfer trolley is suddenly stopped; in addition, through rotation of the auxiliary braking frame, the auxiliary braking frame rubs with the ground through a plurality of braking tooth blocks, the traction wheel is further helped to be braked, and the braking effect is guaranteed.

Trolley systems and associated rails and tracks may include trolleys having an integrated brake system that can be adapted to slow or stop the trolley based on various control inputs (internal or external). The track system may be formed from either or both of a series of tensioned cables or tracks that are interconnected with transition system and the trolleys, able to transition between track systems. The track system may be fitted with additional braking elements to govern motion of the trolley along a track system. Additionally, the track may be fitted with other elements that provide an external input into the trolley to modify the braking operation of the trolley.

An example braking control method is provided, including: obtaining a vehicle speed and a required braking force of a vehicle; determining a target braking force based on the vehicle speed and the required braking force; and determining a first execution braking force and a second execution braking force based on the target braking force, where the first execution braking force is provided through energy regeneration, and the second execution braking force is provided by a braking system. Further, a related apparatus is provided.

A method of controlling a vehicle with a plurality of motion actuators comprises: determining a longitudinal inclination and speed of the vehicle; selecting an uphill drive mode if the longitudinal inclination is greater than an inclination threshold and the absolute speed is less than a speed threshold, and otherwise selecting a regular drive mode; obtaining motion requests; in accordance with the selected drive mode, providing a solution to an optimization problem related to optimal control of the motion actuators in accordance with the obtained motion requests; and controlling the motion actuators in accordance with the solution to the optimization problem. The optimization problem is dependent on a control effectiveness matrix which is defined differently in the uphill drive mode and the regular drive mode.

A method for operating a vehicle brake system, wherein the brake system has at least one friction brake and at least one regenerative brake. A defined switching pattern is specified for switching between a self-cleaning operating mode for cleaning the friction brake and a normal operating mode of the brake system. The method includes determining information describing the state of the at least one friction brake, determining the state of the at least one friction brake from the information, determining whether the state satisfies a specific switching criterion, and, if the self-cleaning operating mode is to be activated according to the switching pattern and the state of the friction brake does not satisfy the switching criterion, suppressing activation of the self-cleaning operating mode and maintaining the normal operating mode.

The invention discloses a hydraulic automatic car arrester for a mining explosion-proof car, and relates to the technical field of mining safety equipment. The hydraulic automatic car arrester for the mining explosion-proof car comprises a car body, a car arresting assembly and a dismounting assembly, a T-shaped connecting plate is arranged on the car body, the car arresting assembly is located on the car body and comprises a pushing structure and a hinging structure, the pushing structure comprises an L-shaped connecting hook, an assembling block and an electric push rod, and the assembling block is connected with the L-shaped connecting hook. The free end of the electric push rod is fixedly connected with an assembling block, one end of the assembling block is fixedly connected with an L-shaped connecting hook, and the disassembling assembly is located on the car stopping assembly. The vehicle stopping device can be tightly attached to a tire to stop the wheel, the pushing structure pushes the vehicle stopping block to the wheel through the action of the electric push rod, it is ensured that the vehicle stopping block makes close contact with the surface of the tire, an effective obstacle is formed, the stopping effect can be improved, accidental movement of a vehicle is avoided, and therefore the safety of a mining area is guaranteed.

The invention discloses a driving and braking integrated electric wheel system with a multi-connecting-rod type braking function. A wheel unit, a planetary gear reducer, a multi-connecting-rod type braking system, a hub motor, a wheel support and an electromagnetic clutch are integrated. According to the system, the working state of a hub motor is controlled to be matched with an electromagnetic clutch to conduct multi-mode switching, the five working modes of driving, pure electric braking, composite braking, reversing braking and parking braking can be achieved, a gear ring structure is machined on the inner edge of a rim of a wheel unit, the utilization rate of the space in a wheel is increased, and the service life of the wheel unit is prolonged. Meanwhile, the hub motor serves as a multiplex power source for driving and braking work and is matched with a multi-connecting-rod transmission scheme adopted by the braking system, the driving and braking integrated function can be achieved, the energy utilization rate of the whole vehicle is improved, a conventional braking execution motor and a speed reducer thereof are omitted, sprung mass is greatly reduced, and the cost is reduced. The control performance and the driving smoothness of the whole vehicle can be improved, and great significance is achieved for high-integration and modularization research of the distributed driving technology.

A torque command calculation unit calculates a torque command value for a motor based on a required braking force commanded from an external source. A relationship between a motor torque and braking forces generated in the electric brakes has a hysteresis characteristic. When the torque increases, the braking force increases along a positive efficiency line, and when the torque decreases, the braking force decreases along an inverse efficiency line. A specific controller calculates a torque command value to bring an actual load closer to a load command value or to bring an actual position closer to a position command value. A control adjuster adjusts a parameter of a control calculation of the specific controller, or a parameter of a control calculation on an input side or on output side of the specific controller during increase operation, during decrease operation, or during transition between the increase operation and the decrease operation.

A brake system may include: a drum; a brake shoe including a frictional member applying frictional force to the drum; a motor moving the brake shoe; a force sensor detecting clamping force of the frictional member to the drum; and a controller electrically connected to the motor and the force sensor, and the controller may determine a first position of the frictional member to the drum at a braking force generation start time based on current applied to the motor or torque of the motor upon controlling the motor for braking, and control the motor so that an interval between the drum and the frictional member is adjusted based on the first position when the force sensor is in a failure state upon controlling the motor for releasing the braking.

A commercial vehicle having various GVWR configurations with a vehicle body with two or more axles, and a cab that does not pivot relative to the vehicle body, and a battery-electric-powered or hydrogen-electric-powered propulsion system. The vehicle has a center of gravity that is substantially lower, and a track width which is substantially narrower, than an articulating tractor-trailer combination with a trailer size comparable to the vehicle body of the present invention, providing substantially increased stability, and with all axles preferably being steerable E-axles, substantially improving the turning and trailing of the vehicle. Additional attributes are improved safety, increased payload weight and cubic capacity, higher productivity and lower maintenance costs. Many other advantages flow from this vehicle design.

A brake system having a brake control portion configured to control an electronic parking brake, wherein the brake control portion includes a release control portion configured to execute a release control in different modes based on a brake temperature that is a temperature of the electronic parking brake, the release control being for releasing the electronic parking brake.

The invention discloses a water-cooling and air-cooling combined heat dissipation type double-brake system and a brake control method, and the brake system comprises brake discs arranged corresponding to wheels; the two brake execution assemblies are arranged on the two sides of the brake disc correspondingly, each brake execution assembly is provided with a plurality of brake pad sets arranged in the circumferential direction of the brake disc, and the brake pad sets are driven by hydraulic assistance generated by a hydraulic booster to be pressed on the surface of the brake disc so as to execute the braking action; a heat dissipation air opening penetrating through the inside and the outside is formed in the brake execution assembly; the double-atomization assembly is borne by the brake execution assemblies and used for supplying wind power and atomized water into the brake execution assemblies; the double-atomization assembly comprises a mounting shell sleeve; the atomizing nozzle is connected with a high-pressure water pump; a high-speed fan; a temperature sensor; and a main controller. The braking force can be greatly increased, the braking effect is improved, heat dissipation is uniform, and the excellent heat dissipation effect is achieved.

The embodiment of the invention provides a vehicle aerodynamic resistance control method and device, a vehicle and a storage medium, the vehicle comprises air supply equipment and an empennage which are arranged at the tail, and the method comprises the steps that the vehicle speed and the tail static pressure of the vehicle are obtained, and the braking state of the vehicle is determined; judging whether the vehicle meets an aerodynamic resistance reduction condition or not according to the vehicle speed and the tail static pressure of the vehicle; according to the vehicle speed and the vehicle braking state, whether the vehicle meets the aerodynamic resistance increasing condition or not is judged; if the vehicle meets the aerodynamic resistance reduction control condition, air supply equipment and an empennage of the vehicle are adjusted to reduce the aerodynamic resistance of the vehicle; if the vehicle meets the control condition for increasing the aerodynamic resistance, the aerodynamic resistance of the vehicle is increased, so that the aerodynamic resistance of the vehicle can be controlled in real time by controlling the air supply equipment and the empennage mounted at the tail part of the vehicle, and the aerodynamic resistance is reduced when the vehicle runs at a high speed so as to improve the endurance; and when the vehicle is braked, the pneumatic resistance is increased to shorten the braking distance.

A brake system for a vehicle may include at least two hydraulic brake circuits, each having at least one hydraulically acting wheel brake, at least two pressure supply devices, each of which is driven by an electromotive drive, at least one valve assembly having valves for the wheel-individual adjustment of brake pressures and / or for separating the wheel brakes from, or connecting same to, a pressure supply device, at least one electronic control and regulating unit, one of which is a superordinate central control unit that controls individual control and regulating units of the components of the brake system, as well as at least one additional electric drive motor for at least one axle or wheel of the vehicle. The brake system may use the at least one pressure supply device and / or the at least one electric drive motor for controlling pressure in at least one wheel brake for steering interventions.

The invention relates to an ultrathin hub electric wheel with a speed reducer integrated in a low-speed drum brake, which comprises a cooling water channel, a motor, a drum brake, a planetary gear speed reducer, a hub, a hub bearing and an axle which are sequentially arranged from outside to inside in the radial direction and are positioned at the same axial position, the two ends of the cooling water channel are connected with an electric wheel outer shell and an electric wheel inner shell correspondingly, and the transmission path of driving force in the electric wheel is from the motor to the planetary gear reducer to the hub to the rim. Compared with the prior art, the axial space of the electric wheel assembly can be compressed to the maximum degree, layout of the speed reduction hub electric wheel assembly at the wheel end of a vehicle is facilitated, and the electric wheel assembly has the advantages of being highly integrated in space and compressed in the axial space limit.

A driving dynamics system for a vehicle may include at least one wheel brake for dissipative braking of a wheel of the vehicle; at least one braking unit associated with the at least one wheel brake and designed to generate a dissipative braking torque via the at least one wheel brake; at least one electric traction motor controllable to generate a regenerative braking torque for at least one wheel or axle of the vehicle; and a central control unit configured to control the at least one brake unit and the at least one electric traction motor for a braking function in combination such that a combined braking torque is generated by means of the at least one brake unit and the at least one electric traction motor. The braking function relates to simultaneous control of a basic braking torque and a controlled additional braking torque.

Braking system with: a hydraulic brake device for generating a friction braking force comprising a pedal (16), at least one brake caliper (21a - 21d) a main pressure generating device (200) with a main cylinder (212) and a piston (251) which pressurizes the main cylinder (212), a wheel pressure generating device (300) for generating a hydraulic pressure in the at least one brake caliper (21a - 21d); and a regenerative braking device (18) and a brake control device (100) for calculating a braking force distribution between friction brakes and regenerative braking, wherein the braking system is configured to adjust a total braking force (Ft) based on a pedal reaction force and a displacement amount of the piston (251) that pressurizes the master cylinder (212), or adjust the total braking force (Ft) based on the pedal reaction force and the generated hydraulic pressure in the at least one brake caliper (21a - 21d) to keep the total braking force (Ft) at a constant level when transitioning from regenerative braking to friction braking in response to a reduction in vehicle speed.

Aspects of the present invention relate to a wet disc brake for an off-highway vehicle comprising: a brake caliper a disc pack located within the brake caliper and arranged to locate on a vehicle shaft having a longitudinal axis extending in an inboard-outboard direction, the disc pack comprising: a plurality of counter discs arranged in series on the axis; and a plurality of friction discs arranged in series on the axis in an alternating arrangement with the counter discs, each friction disc comprising friction material and being configured to be rotatably fixed to the vehicle shaft; and a piston actuatable within the brake caliper during a brake operation to urge the friction material of the friction discs to engage the counter discs to slow the vehicle; and a contactless wear sensor assembly configured to measure the axial length of the disc pack.

The invention relates to the technical field of automobiles, in particular to an electronic mechanical brake clamping force estimation method and device, a controller, an automobile and a medium, and aims at solving the technical problems that an existing electronic mechanical brake with a built-in sensor is large in overall size, difficult to arrange and high in single piece cost. The method comprises the following steps: acquiring a motor rotation angle of the electronic mechanical brake; according to the motor rotation angle, the transmission element lead of the electronic mechanical brake and the transmission ratio of the transmission mechanism, the piston movement stroke of the electronic mechanical brake is determined; according to the movement stroke of the piston and a pre-calibrated target corresponding table, the first caliper clamping force of the electronic mechanical brake is determined; an estimated caliper clamping force for the electromechanical brake is determined based on the first caliper clamping force for the electromechanical brake.

The present invention relates to a method for controlling a braking system of an electric vehicle, comprising: determining a total requested brake strength (S1) of the braking system based at least on a brake request of the braking system and a vehicle driving speed of the electric vehicle; determining a brake strength of each brake mode of the braking system based at least on vehicle status information of the electric vehicle, the braking system having at least three brake modes, and the brake modes having a preset priority (S2; and if at most two brake modes are put into use, determining a requested brake force S3 of each brake mode based at least on the total requested brake strength and the priority of the brake mode. According to the present invention, it is possible to effectively suppress brake jitter in the brake process, improve the driving comfort of the vehicle, and simplify the control strategy for coordinating these brake modes, effectively reducing the hardware and software costs of a continuous brake coordinator for coordinating these brake modes.

The utility model relates to the technical field of automobiles, and provides a wheel and an electric automobile, the wheel comprises a hub, a hub motor, a planetary reduction mechanism and a mandrel, the hub comprises a rim and a spoke, and the hub motor and the planetary reduction mechanism are both located on the same side of the spoke; the hub motor comprises a motor shell, a motor stator and a rotor assembly, the motor stator is fixed in the motor shell, and the radial outer end of the rotor assembly corresponds to the motor stator; the planetary reducing mechanism comprises a planet carrier and a sun gear, the radial inner end of the rotor assembly is fixedly connected with the sun gear, and the planet carrier is fixedly connected with the spoke; the mandrel is fixed on a vehicle body, the motor shell is fixed on the mandrel, and the planet carrier, the sun gear and the rotor assembly are all rotationally installed on the mandrel. The acting force borne by the hub in the wheel is transmitted to the central spindle through the planetary speed reducing mechanism and then transmitted to a vehicle body through the central spindle, and the problem that a shell of a hub motor is prone to deformation is solved.