4609results about "Actuators" 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 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.

An electronic control clutch structure of an actuator device having a driver, a cam, a clutch wheel, and a transmission wheel is provided. The cam is connected to the driver, is driven by thereof, and includes a first actuating portion and a second actuating portion. The clutch wheel is connected to the rotating draft, rotates with thereof, and is arranged atop on the cam. The cam operatively actuates the clutch wheel. The transmission wheel is connected to the rotating draft. The clutch wheel and the transmission wheel are in a detached state when the clutch wheel is located on the first actuating portion. The clutch wheel and the transmission wheel are in an embedded state when the clutch wheel is located on the second actuating portion. The electronic control clutch structure may adapt uneven areas in the grass to perform weeding work according to the terrain changes of the grassland.

An electromechanical brake system (10) includes a first energy supply apparatus (20) and a second energy supply apparatus (21), a first system control device (30) and a second system control device (31), a plurality of electromechanical brake actuator devices (41), and a first plurality and a second plurality of electronic brake control systems (40a, 40b). Each of the electronic brake control systems is set up to control one of the electromechanical brake actuator devices. The first energy supply apparatus is connected to the first system control device and to each of the first electronic brake control systems, and the second energy supply apparatus is connected to the second system control device and to each of the second electronic brake control systems. A further control device (32, 47) may be connected to at least one of the first electronic brake control systems or one of the second electronic brake control systems.

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.

In some aspects, a speed reducer includes an inner gear having an inner gear hole; an outer gear having an outer gear hole, arranged in the inner gear hole and meshing with the inner gear; an eccentric wheel rotatably supported in the outer gear hole, the outer gear being driven by the eccentric wheel to revolve around the rotation axis of the eccentric wheel while rotating around its own axis; a brake block arranged on the eccentric wheel to rotate together with the eccentric wheel, the brake block being 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; and a drive member coupled to the eccentric wheel, a rotation axis of the drive member being coaxial with the rotation axis of the eccentric wheel.

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.

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.

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.

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.

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 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.

The invention discloses an electromagnetic disc brake with a gap automatic compensation function, and relates to the technical field of electromagnetic disc brakes, the electromagnetic disc brake comprises a mounting base and a connecting shell, one side of the mounting base is provided with a shell, an electromagnet is mounted in the mounting base, one side of the electromagnet is provided with an armature, and the armature is connected with the shell. One side of the armature is connected with multiple sets of reset springs, and one end of each reset spring is fixed to the inner side of the shell. According to the electromagnetic disc brake with the gap automatic compensation function, the gap between the armature and the electromagnet can be detected through the microswitch, and when the gap exceeds the range, the thin hydraulic cylinder can be started to drive the hydraulic plunger head to push the armature to move, so that the gap between the armature and the electromagnet returns to normal, and compensation is completed; the sealing mechanism can prevent external dust from making contact with the armature and other components, so that the braking effect is kept, and the heat dissipation mechanism can dissipate heat of the braked components.

The application provides a normally open large-flow switching electromagnetic valve and a hydraulic control unit of an automobile brake system. The electromagnetic valve comprises an electromagnetic coil, a valve shell, a moving iron, a valve core, a small-flow valve seat and a large-flow valve seat. An accommodating space is formed in the valve shell. The valve core, the small-flow valve seat and the large-flow valve seat are sequentially arranged in the accommodating space from top to bottom. The valve core is connected with the moving iron, and the electromagnetic coil is arranged around the moving iron and the valve shell. A first elastic member is arranged between the valve core and the small-flow valve seat. The small-flow valve seat and the large-flow valve seat are connected through a second elastic member. When the electromagnetic coil is powered off, the valve core opens a small-flow port, and the small-flow valve seat opens a large-flow port, so that the electromagnetic valve is opened with large flow. When the electromagnetic coil is powered on, the valve core closes the small-flow port, and the small-flow valve seat closes the large-flow port, so that the electromagnetic valve is closed. The application can satisfy the normally open and large-flow capacity of the electromagnetic valve, so as to realize rapid pressure regulation.

Disclosed herein are an electro-mechanical brake system and a controlling method thereof. The electro-mechanical brake system according to the present embodiment includes a driving part including a motor configured to generate a driving force and a brake pad configured to brake a vehicle or release braking by moving forward and backward with respect to a disc by the motor, a sensor part including a first sensor configured to output a signal corresponding to a stroke of the motor, a second sensor configured to output a signal corresponding to a force applied from the disc to the brake pad, and a third sensor configured to output a signal corresponding to an active brake condition of the vehicle, a controller configured to estimate and update a contact point between the disc and the brake pad, whenever a braking input of the brake pad or release thereof occurs.

A grease filling method for a ball screw device includes the steps of covering an outer periphery of a screw shaft protruding from one end portion of a nut with a covering member, supplying grease to a portion between a nut inner peripheral surface on one end portion side of the nut and the screw shaft, inserting the protruding screw shaft into a nut inner side while being covered with the covering member, bringing a tip of the covering member in an insertion direction closer to an end portion of an infinite circulation path on the one end portion side of the nut, and sending the grease supplied to the nut inner side to a region of the infinite circulation path, pulling out the covering member together with the screw shaft from the one end portion of the nut, and taking out the covering member from the screw shaft.

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 control method is for a braking system that includes an electronically controlled mechanical brake with a first motor and a second motor. The method includes detecting a pedal stroke and determining a total required braking torque based on a pedal stroke / total braking torque curve, distributing the total braking torque to the first motor and the second motor to determine a target torque for the first motor and a target torque for the second motor, and driving the first motor and the second motor to operate based on the target torques. The method further includes monitoring an operating current and a rotational speed of the first motor and the second motor, and using motor characteristic curves of the first motor and the second motor to calculate a first computed output torque and a second computed output torque.

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 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 discloses a carbon-ceramic brake disc of a gradient composite structure, the carbon-ceramic brake disc is composed of a porous carbon-ceramic matrix and a gradient composite coating arranged on the surface of the porous carbon-ceramic matrix, the gradient composite coating is composed of a transition layer and a surface layer, the transition layer is a gradient Cf / SiC layer, and the surface layer is a gradient Cf / SiC layer. The carbon-ceramic brake disc comprises a carbon-ceramic base body, a transition layer and a surface layer, the transition layer is arranged on the surface of the carbon-ceramic base body, the volume fraction of carbon fibers in the transition layer is progressively decreased in a gradient mode from inside to outside, the volume fraction of SiC is progressively increased in a gradient mode from inside to outside, and the surface layer is a SiC / ZrB2 composite layer. The gradient composite coating is arranged on the surface of the carbon-ceramic base body, and the volume fraction of the carbon fibers in the inner layer is progressively decreased in a gradient mode from inside to outside; therefore, the difference of interlayer thermal expansion coefficients is greatly reduced, the cracking risk of the surface layer and the matrix is reduced, the surface layer has ultrahigh-temperature protection capability, the interface thermal stress of the carbon-ceramic brake disc provided by the invention is reduced by 62%, and the ultrahigh-temperature service life is prolonged by more than 3 times.

The utility model discloses a double-diaphragm disc type brake chamber which comprises a front cover assembly, a middle body assembly and a cylinder body assembly. A push rod disc assembly is arranged between the front cover assembly and the middle body assembly, a first leather film is arranged between the push rod disc assembly and the middle body assembly, a dustproof sleeve is fixedly arranged on the front cover assembly and arranged on the outer side of the push rod disc assembly in a sleeving mode, and the cylinder body assembly comprises a second leather film, an aluminum release disc, a cylinder body and a release bolt. According to the double-diaphragm disc type brake chamber, due to the fact that the sealing assembly is arranged, hard friction between the tappet rod and the inner hole of the middle body is reduced, the service life of a product is prolonged, meanwhile, the tappet rod and the tappet rod disc are connected in a riveting pressing mode, the assembling technology is simplified, the assembling cost is reduced, and the potential risk that screws are loosened due to the fact that thread glue is not coated is avoided; center positioning of the release disc is increased through the parking cavity leather film, and damage to the release disc and the spring due to the fact that the leather film and the release disc are not positioned in the prior art when the parking cavity works is reduced.

A brake pad retainer arrangement for holding a brake pad in position relative to a disc in a disc brake. The arrangement comprises an elongated retainer bracket arranged to extend transversely over the disc and the brake pad, wherein the retainer bracket is spring loaded to press against a rim portion of the brake pad. The retainer bracket is also arranged to engage the rim portion at an angle, thereby biasing the brake pad in a direction away from the disc.

The utility model discloses a locking device of an actuating system and the actuating system. The locking device of the actuating system comprises a locking part attached to the rotating part and provided with at least one locking protrusion; the driving component comprises a motor, an elastic element and a transmission element driven by the motor; the braking component is arranged between the locking component and the transmission element in a lever form; in the braking state, the transmission element is switched to the locking position, and the braking component keeps stopping of the locking protrusion under the action of the elastic element. In the release state, the transmission element is switched to the unlocking position, and the brake component is pushed by the transmission element to be kept at the position separated from the locking protrusion. The actuating system comprises an actuating motor, a gear transmission mechanism and a rotary output component, and one of the actuating motor, the gear transmission mechanism and the rotary output component is provided with the locking device of any scheme. The phase speed is higher, and the braking or releasing state is kept without continuous power supply.

The invention relates to the technical field of brake pads, in particular to a brake pad capable of reducing abrasion of a brake disc and a preparation technology thereof.The brake pad comprises, by weight, 20%-32% of reinforcing fibers, 12%-18% of a binder, 22%-34% of a friction regulator and 24%-38% of filler and functional additives, the reinforced fibers are at least one of titanium carbide coated carbon fibers, steel fibers and aluminum silicate ceramic fibers. According to the invention, the reinforced fibers construct a high-strength heat conduction network, and heat is quickly dispersed to reduce thermal stress concentration; the binder ensures the structural stability at high temperature; the friction regulator optimizes a friction coefficient curve through the synergistic effect of lubrication and friction increasing, and high-temperature fluctuation is avoided; the filler and the functional additive enhance the heat absorption and buffering capability, and adjust pores to relieve thermal shock. All the components have a synergistic effect, so that hot cracks of the brake disc can be reduced, and the crack resistance and the brake stability under extreme working conditions are improved.

Apparatus (1) for the heat treatment of articles, comprising a longitudinal casing (2), a convection tunnel furnace (3) positioned longitudinally within the casing (2) comprising a circuit for the production and forced circulation of hot air through said furnace (3), a plurality of stackable trays (4) where the articles can be housed, a conveyor (50) configured to transport at least one row of stacks of the stackable trays (4) through the furnace (3), a first thermal stabilization chamber (51) for the stacks of trays (4) with the articles to be treated communicating with an entrance door (31) of the furnace (3) and a second thermal stabilization chamber (52) for the stacks of trays (4) with the treated articles communicating with an exit door (32) of the furnace (3), comprising means for forced air suction (200) at least from the second thermal stabilization chamber (52) and means for recovery and introduction (210) of the suctioned air inside the furnace (3).

A lever assembly for a wheelchair having a wheel lock system with two wheel lock assemblies. Each wheel lock assembly including a wheel lock and an actuator with an actuation cable that controllably moves a lock-pin between a locking and an unlocking position relative to the wheelchair wheels. The lever assembly has a body and a lever, with the body attached to the wheelchair and both actuation cables, and the lever attached to and controlling both actuation cables to manipulate the lock-pins to engage or disengage the wheelchair wheels. The lever is adapted for use by disabled occupants.