5411results about "Brake actuating mechanisms" 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 belongs to an electromechanical braking system in the technical field of vehicles, and discloses a driving and parking braking torque mutual coupling redundancy electromechanical braking system which comprises a brake assembly, an MGU and shell, a driving braking motor and gear reducing mechanism assembly, a gear system bearing support and an ECU controller assembly. The service braking gear reduction mechanism assembly comprises a service braking first-stage reduction gear train mounting mechanism, a second-stage reduction gear train mounting mechanism and a bearing, and the parking braking gear reduction mechanism assembly comprises a parking first-stage reduction worm and gear mechanism, a second-stage reduction worm and gear mechanism and a mounting bearing. The braking torque of the driving braking and the braking torque of the parking braking are mutually coupled, the two systems can share the braking output gear shaft assembly, the driving braking and the parking braking can be independently operated, and meanwhile the parking braking can assist the driving braking when needed. By means of the design, the safety and reliability of the braking system are improved.

The invention provides a normally-open large-flow switching electromagnetic valve and a hydraulic control unit of an automobile braking system. The electromagnetic valve comprises an electromagnetic coil, a valve shell, moving iron, a valve element, a small-flow valve seat and a large-flow valve seat. A containing space is formed in the valve shell, a valve element, a small-flow valve seat and a large-flow valve seat are sequentially arranged in the containing space from top to bottom, the valve element is connected with the moving iron, the electromagnetic coil is arranged around the moving iron and the valve shell, a first elastic piece is arranged between the valve element and the small-flow valve seat, and the small-flow valve seat is connected with the large-flow valve seat through a second elastic piece. When the electromagnetic coil is powered off, the valve element opens the small-flow opening, and the small-flow valve seat opens the large-flow opening, so that the electromagnetic valve is opened with large flow. When the electromagnetic coil is powered on, the valve element seals the small-flow opening, and the small-flow valve seat seals the large-flow opening, so that the electromagnetic valve is closed. The electromagnetic valve can meet the requirement that an oil inlet and an oil outlet of the electromagnetic valve are normally opened and keep high overflowing capacity, and therefore pressure can be rapidly regulated and controlled.

The invention provides a surrounding type numerical control rotary table intelligent braking system based on AI predictive control, and belongs to the technical field of intelligent manufacturing and numerical control. The problems that an existing numerical control rotary table braking system is lagged in response, lacks intelligent prediction and self-adaptive capacity, and is insufficient in control precision and attenuated in long-term performance are solved. The surrounding type numerical control rotary table intelligent brake system based on AI predictive control comprises a state acquisition module, an AI predictive module, a pressure control module, a surrounding type brake execution structure and a feedback correction module, an AI predictive mechanism and a self-correction feedback loop are introduced, intelligence, self-adaption and high responsiveness of brake control are achieved, and the brake control precision is improved. The positioning precision, the braking stability and the overall energy efficiency level of the numerical control rotary table are improved, and the numerical control rotary table has the advantages that the response speed is remarkably increased, the positioning precision is high, the self-adaptive capacity is high, the braking process is stable and the intelligent degree is high.

In particular, the invention relates to an electromechanical brake, a machine, a wear readjustment device and a method or procedure, whereby the electromechanical brake comprises an actuator, a transmission unit, a brake lining and a friction surface, the actuator which is moving in a limited actuator actuation range, the actuator which is executing a lining stroke over at least a portion of its actuator actuation range via the transmission unit, whereby the transmission unit has a non-linearity, i.e. a transference ratio which is not constant over at least part of the actuator operating range, and whereby the transference ratio of the transmission unit is selected and / or configured in such a way that at least two subsections with differently acting non-linearities are formed along the actuator operating range.

An electric brake for a wheel rotor having a brake pad includes a housing with a passage. A piston assembly in the passage includes a spindle and a piston. The spindle is rotatable to cause the piston to move axially relative to the brake pad. A drive assembly includes a motor. A gear train is connected to the motor and the spindle. A coupling mechanism is coupled to the gear train and has a first condition enabling torque transmission from the motor to the spindle to axially move the piston to apply braking force to the brake pad. The coupling mechanism has a second condition disabling torque transmission from the motor to the spindle is prevented which permits the piston to retract and reduce the braking force on the brake pad without stopping or reversing the motor.

A brake control device (1) controls a mechanical brake device (30) comprising: a booster mechanism; a pressing mechanism (31) that presses the booster mechanism by means of an output shaft that slides in response to rotation of a motor (32); and a biasing mechanism that applies force to the booster mechanism by means of a biasing member. The brake control device (1) comprises a drive driver (14) and a mechanism control unit (19). The drive driver (14) converts, in accordance with a target torque, electric power supplied from a power supply device (42) into electric power that is to be supplied to the motor (32), and outputs the converted electric power to the motor (32). The mechanism control unit (19) either permits or limits applying of force to the booster mechanism by the biasing mechanism provided to the mechanical brake device (30).

Provided is an electromechanical brake system comprising an actuator of an electromechanical brake operated by a motor, the electromechanical brake system including: a motor driving unit configured to drive the motor; and a control unit configured to be electrically connected to the motor driving unit, wherein the control unit is configured to: calculate a first rotation angle of a spindle in a brake apply mode of the electromechanical brake, calculate a second rotation angle of the spindle in a braking release mode of the electromechanical brake, and when a difference between the calculated first rotation angle and the calculated second rotation angle exists, control a notification device to notify a wear state of a brake pad.

The utility model relates to the technical field of brake air chambers, and provides a double-piston brake air chamber and a brake air chamber suite. The first side of the flange plate and the front cylinder cover define a traveling cavity, the second side of the flange plate and the rear cylinder cover define a parking cavity, a first air inlet and a second air inlet are formed in the periphery of the flange plate, and the first air inlet is connected with a first air inlet inclined pipe to form a first air channel communicating the outside of the brake air chamber with an inner cavity of the traveling cavity. The second air inlet is connected with a second air inlet inclined pipe to form a second air channel communicating the outer portion of the braking air chamber and the inner cavity of the parking cavity. According to the double-piston brake chamber, the overall structure of the double-piston brake chamber can be simplified, miniaturization of products is facilitated, completely symmetrical arrangement can be achieved, the universality of the flange plate is enhanced, and the overall use cost is reduced.

The invention relates to an electromechanical drum brake (10) for a motor vehicle. The electromechanical drum brake (10) comprises brake shoes (14) and an adjusting device (18) arranged between the brake shoes (14) and driven by a drive unit (38), by means of which the brake shoes (14) can be spread apart for braking. The adjusting device (18) is attached to a rear wall (22) of the drum brake (10), the rear wall (22) being designed to be elastic such that it permits movements at least to the extent of the expected out-of-roundness and eccentricity.

The invention relates to the technical field of crane lifting appliances, in particular to a lifting-angle-adjustable crane hanging bracket which comprises two I-shaped beams, the two I-shaped beams are parallel to each other, the peripheries of the two I-shaped beams are jointly connected with an annular guide block, an annular transfer hanging bracket is rotatably mounted on the periphery of the annular guide block, and the annular transfer hanging bracket is rotatably mounted on the periphery of the annular guide block. And a rotating part is arranged at one end between the two I-shaped beams. The annular transfer hanging bracket is driven by the rotating component to rotate along the periphery of the annular guide block, the angle of goods is adjusted, the flexibility and the use convenience of the lifting appliance are improved, after adjustment is completed, the brake disc is combined with the positioning disc, and under the friction force braking effect between the positioning disc and the brake disc, the goods can be conveyed to the lifting appliance. The connecting sleeve is braked on the periphery of the adjusting shaft rod, the braking effect on the adjusting shaft rod is achieved under the torsion limiting effect of the key groove and the driven key block, unnecessary rotation of the adjusting shaft rod in the using period is avoided, and the stability of cargo lifting can be guaranteed.

The utility model relates to the technical field of power split hybrid transmissions, in particular to an electromagnetic brake device for locking a generator shaft, which comprises a cylindrical brake sleeve seat capable of movably sleeving an input shaft of an engine, and an electromagnetic coil assembly mounting position, a push disc mounting position and a driven disc mounting position are arranged on the surface of the brake sleeve seat. The electromagnetic coil assembly mounting position is sleeved with an electromagnetic coil assembly, the driven disc mounting position is sleeved with a driven disc, and a push disc is movably arranged on the push disc mounting position; a disc spring is arranged on the side, facing the driven disc, of the push disc, and an iron core in the electromagnetic coil assembly can act on the push disc to enable the push disc to move towards the driven disc and be connected with the driven disc in a clamped mode. The outer end face of the driven disc is provided with an output disc capable of being connected with a generator shaft in a sleeved mode. Compared with other types of locking mechanisms, the electromagnetic braking device has the advantages that the change amount of the vehicle is small, the structure is simple and compact, the control logic is simple, and the control effect is good.

An electro-mechanical brake includes: a brake disc; a friction pad; a pressing unit configured to press the friction pad toward the brake disc; a motor supplying power to the pressing unit; a current sensor; a position sensor configured to measure a position of the pressing unit; and an initial position calculating unit calculating at least one of a home position or a contact point of the pressing unit, wherein the pressing unit is configured to pass through a first check point at which a first current is measured, and a second check point at which a second current greater than the first current is measured, and wherein the initial position calculating unit calculates at least one of the home position or the contact point based on the first current, the first check point, the second current, and the second check point.

The invention provides an axial magnetic flux motor driven RV speed reduction driving assembly which comprises an axial magnetic flux motor unit and an RV speed reducer unit which are connected, the axial magnetic flux motor unit and the RV speed reducer unit are integrated in a shell, the axial magnetic flux motor unit comprises a plurality of stators which are distributed in an annular mode, and the stators are connected with the axial magnetic flux motor unit. A stator is arranged on the rotor, a disc type rotor is arranged on each of the two sides of the stator, a plurality of torsion bars which are uniformly distributed in the circumferential direction are arranged on the rotor facing the side where the RV speed reducer unit is located, the torsion bars are connected with a sun gear of a planetary gear train of the RV speed reducer unit, and an output disc of the RV speed reducer unit is a power output end. The RV speed reduction driving assembly driven by the axial magnetic flux motor has the advantages of being large in starting torque, high in mechanical efficiency, compact in structure, high in overload capacity and the like.

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.

In some aspects, a speed reducer includes a housing; an inner gear supported in the housing and having an inner gear hole; an outer gear arranged in the inner gear hole, meshing with the inner gear, and having an outer gear hole; an eccentric wheel arranged in the outer gear hole and configured to drive the outer gear to revolve around a rotation axis of the eccentric wheel; a brake block arranged on the eccentric wheel to rotate together with the eccentric wheel and movable relative to the eccentric wheel between a braking position and a release position; an elastic member coupled to the eccentric wheel and the brake block and configured to press the brake block towards the braking position; a limit disc arranged in the housing and engaged with the housing and the outer gear; and a drive member coupled to the eccentric wheel.

The invention discloses an auxiliary braking device for a vertical lifting type gate, and belongs to the technical field of vertical lifting type gates. The vertical lifting type gate is arranged in the gate groove in a lifting mode, and the auxiliary braking device comprises a hydraulic separating type crane, a hydraulic separating type crane and a hydraulic separating type crane, and the hydraulic separating type crane is configured to be capable of applying transverse pressure to the vertical lifting type gate so that the vertical lifting type gate can abut against and be fixed to the gate groove; the electric pump is connected to the liquid inlet of the hydraulic separation type crane and is configured to supply hydraulic fluid to the liquid inlet of the hydraulic separation type crane by hydraulic pressure; the regulating valve is arranged on a pipeline for connecting a liquid inlet of the hydraulic separating crane and an outlet of the electric pump; the auxiliary braking device is configured to adjust the pressure level of hydraulic fluid in the hydraulic separating type crane by adjusting the opening degree of the adjusting valve so as to adjust the transverse pressure.

The invention discloses a piston assembly of a motor brake and an assembling process of the piston assembly, and relates to the technical field of motor brakes. Comprising a caliper shell, a caliper body assembly is installed on one side of the caliper shell, a power transmission unit assembly is detachably installed on the caliper body assembly, a positioning pin is arranged on the caliper body assembly, and a positioning hole matched with the positioning pin is formed in the power transmission unit assembly; the caliper body assembly of the caliper comprises a main support, a second support and a third support, wherein the main support is detachably installed on a caliper shell; the sleeve is detachably mounted on the inner side of the main bracket; the nut is connected into the sleeve in a sliding manner; and the ball screw assembly is connected into the nut through a thread. According to the invention, through arrangement of structures such as the caliper body assembly, torque transmission, clamping force transmission and stress support of parts are carried out in a highly integrated manner, installation and signal transmission of a force sensor in a very narrow space are realized, and the performance is reliable.

The utility model relates to the technical field of pneumatics, in particular to a double-locking pneumatic shaft lock structure which comprises a fixing seat, an end cover and a locked shaft. A clamping sleeve is arranged in the fixed seat, a guide sleeve is arranged in the end cover, and the outer wall of the locked shaft is sleeved with the guide sleeve and the clamping sleeve; the lock sleeve is sleeved on the outer wall of the guide sleeve through a steel ball, the locking piston is sleeved on the outer wall of the lock sleeve, and the locking piston is in a Z shape rotating by 90 degrees. And the side end of the locking piston is in contact connection with the end cover. Through precise matching of the guide sleeve, the clamping sleeve, the locking sleeve and the locking piston, stable locking of a locked shaft is achieved, the structure is compact, operation is stable, and the operation efficiency and safety of equipment are effectively improved; the inclined design of the outer wall of the jacket and the opposite inclination of the inner wall of the locking piston are matched with the action of the first spring and the second spring, so that a double-locking mechanism is formed, and the stability and the reliability of the shaft lock under complex working conditions are ensured.

The invention relates to a compact type running and parking integrated electronic mechanical braking mechanism, and belongs to the technical field of braking equipment. Comprising a mounting frame, a brake assembly and a brake caliper body assembly, and the brake assembly comprises a service brake unit and a parking brake unit; the service braking unit comprises a braking motor and a reduction gear set; the brake caliper body assembly is provided with a brake caliper body, the brake caliper body is slidably installed on the installation frame, and one end of the brake caliper body is connected with the power end of the brake motor through a reduction gear set. The parking braking unit comprises a parking motor, a ratchet wheel and a pawl; the ratchet wheel is connected with the reduction gear set, the pawl is connected with the power end of the parking motor, and a buffering piece is arranged between the pawl and the power end of the parking motor and used for forming flexible connection between the pawl and the power end of the parking motor when the ratchet wheel is locked by the pawl and fails. Flexible connection is formed between the pawl and the power end of the parking motor, the parking stability is improved, frictional wear between parts is reduced, and the service life of the mechanism is prolonged.

An electromechanical braking system with wear compensation and a vehicle. The electromechanical braking system includes a caliper body, two friction plates, a gain bridge, a stud, and a drive apparatus, the gain bridge, one friction plate, the other friction plate, and the stud are arranged sequentially, the gain bridge is configured to movably connect the caliper body and the one friction plate, and the stud is configured to drivingly connect the caliper body and the other friction plate; the drive apparatus is configured to: drive the gain bridge and the one friction plate, and drive the stud and the other friction plate; and the drive apparatus is further configured to drive, through a unidirectional torque limiting apparatus, the stud to rotate relative to the caliper body along an axis of the stud. The embodiments improve reliability of the electromechanical braking system.

The invention relates to the technical field of automobile brake control, in particular to a double-caliper automobile brake, symmetrical assembling equipment and an assembling method.The double-caliper automobile brake comprises a brake disc, two sets of hydraulic calipers are arranged on the brake disc, and each set of hydraulic calipers is connected with an oil pumping structure; the control box is connected with the oil pumping structure; the deflection plate is arranged in the control box, and the deflection plate can be matched with the oil pumping structure to drive the hydraulic calipers to act; the driving assembly is installed in the control box and connected with the deflection plate, and when a brake pedal is stepped down, the driving assembly can drive the deflection plate to act towards the oil pumping structure; and the switching assembly is connected with the driving assembly and the deflection plate, and the switching assembly can drive the deflection plate to deflect when one set of hydraulic calipers keeps the braking action for preset time, so that the two sets of hydraulic calipers alternately execute the braking action, and the high temperature of the braking system is avoided.

In some aspects, a transmission device with a reverse braking function includes a housing seat having a seat hole; a driven shaft rotatably and at least partially supported in the seat hole; a brake block arranged on the driven shaft and rotatable together with the driven shaft, the brake block being movable relative to the driven shaft between a braking position where the brake block abuts against the housing seat and a release position where the brake block is separated from the housing seat; an elastic member coupled to the driven shaft and the brake block and configured to press the brake block towards the braking position; and a drive member coupled to the driven shaft.

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 brake actuator (12) is described, particularly for an electromechanical vehicle brake (10), comprising an electric motor (32) for actuating the vehicle brake (10) and a locking assembly (36) for selectively locking an output shaft (38) of the electric motor (32) to form a parking brake function. The locking assembly (36) includes a locking lever (40) pivotably mounted between a locking position and a release position and a locking actuator (42) for pivoting the locking lever (40), wherein a locking tooth (44) is formed on the locking lever (40), which, in the locking position of the locking lever (40), engages with a gear coupled to the output shaft (38) of the electric motor (32).The locking tooth (44) has a locking geometry (61) on one tooth flank (60) and a lifting geometry (63) on an opposite tooth flank (62), which are designed such that when the electric motor (32) rotates in a first direction that increases the braking force, the locking lever (40) is lifted out of engagement with the gear by the rotation of the electric motor (32) against a spring force, and rotation of the electric motor (32) in an opposite direction that releases the braking force is blocked. A vehicle brake (10) is also specified.

An electro-mechanical brake includes a piston driven by a motor to push a brake pad toward a wheel disc. The brake also includes: a current detection unit for current flowing through the motor; a piston position detection unit; a map generating unit and a braking force value detection unit. When power is applied to the vehicle at start-up, the first map comprises data correlating current flowing through the motor, position of the piston, and braking force, the second map comprises data of is a map of the current flowing through the motor and a factor are converted into data with reference to the first state, and the factor is a ratio of the braking force to the current flowing through the motor. A braking force value detection detects braking force based on piston position, a current value in the motor, the first map, and the second map.

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.

A system and method for controlling a hydraulic fracturing pumping system is described herein. The method can include stopping an engine coupled to a hydraulic fracturing pumping system including at least one pump by supplying pressure from an accumulator to a hydraulic braking system including a brake. The method can also include starting the engine coupled to the hydraulic fracturing pumping system and releasing the brake.

The invention discloses an active lubrication brake cylinder for a railway wagon and the railway wagon, and relates to the field of railway wagon control systems.The active lubrication brake cylinder comprises a fixed gear ring arranged at the bottom of a spinning cylinder body, and a piston is arranged in the spinning cylinder body; the matching gear ring and the fixed gear ring are arranged in parallel, and the side, facing the fixed gear ring, of the matching gear ring is a convex tooth surface; the projection of the S-shaped spiral elastic pieces in the axial direction of the piston is in a circular arc shape, one ends of the S-shaped spiral elastic pieces are connected with the side, away from the fixed gear ring, of the matched gear ring, the S-shaped spiral elastic pieces are symmetrically arranged in the circumferential direction of the matched gear ring, and the other ends of the S-shaped spiral elastic pieces are connected with a base of the piston; the brake cylinder structure meets the modification of the existing brake cylinder, is simple in structure and low in modification cost, and also has good manufacturability and maintainability.