23results about How to "Smooth braking" patented technology

The invention relates to an electro-mechanical brake caliper, a brake system and a vehicle. The electro-mechanical brake caliper comprises a caliper body, a brake disc and a brake disc, the brake pad is arranged on the caliper body; the driving module is arranged on the caliper body; the driving module comprises a driving part, a transmission mechanism, a first speed reducing mechanism, a second speed reducing mechanism, a first piston assembly and a second piston assembly; the driving part is in transmission connection with the first speed reducing mechanism and the second speed reducing mechanism through the transmission mechanism, the first speed reducing mechanism is in transmission connection with the first piston assembly, the second speed reducing mechanism is in transmission connection with the second piston assembly, and the first piston assembly and the second piston assembly can move in the first direction so as to abut against and drive the brake pad to move. The electronic mechanical brake caliper has good brake performance.

This application discloses an escalator anti-lock braking system and its operating method. The escalator anti-lock braking system includes a brake wheel, a braking mechanism, a closing spring, a brake coil, a variable resistance mechanism, an energy storage capacitor, a step speed sensor, and a controller. This application utilizes the brake coil to generate a repulsive magnetic force on the brake arm, thereby reducing the instantaneous braking force of the brake shoes on the brake wheel during braking, resulting in more uniform and smooth braking. The magnetic force of the brake coil can be adjusted by the controller, allowing for automatic adjustment based on actual conditions.

A double-rail tackle comprises a frame; the steering structure is movably arranged in the frame and is positioned at the central part; the brake structure is movably arranged in the frame and is positioned at the central part; the guide rail structure is movably arranged on the lower wall surface of the chassis and is positioned at the central part; the utility model relates to the technical field of recreational facilities, through the driving of the motor gear box assembly, the fluted disc is rotated, the frame is pushed to move, the whole frame is guided through the contact between the guide wheel and the guide rod, and meanwhile, the front wheel can synchronously rotate along with turning under the action of the linkage rod so as to adapt to turning, and when the vehicle is static, the front wheel is driven by the motor gear box assembly to rotate. The long brake block makes contact with the guide rod, the vehicle cannot move, the long brake block is far away from the guide rod by pushing the handle, the device normally slides at the moment, when braking is needed, the whole device is braked by pulling the handle, and when the speed sensor detects overspeed, the disc brake assembly is started, the brake disc is clamped, and the whole device is braked. The device can smoothly move on a track, the braking performance is good, intelligent braking can be achieved, and the safety of the tackle is greatly improved.

The application relates to a carbon / ceramic brake disc with wear resistance improved by silicon-chromium alloy synergistic modification and a preparation method thereof. The carbon / ceramic brake disc is prepared through key steps of preparing a carbon fiber preform, a carbon / carbon composite material, ceramic powder and a carbon / ceramic composite material, and the process is through gradient melting impregnation and segmented heat treatment process, thereby avoiding the composition segregation problem caused by the traditional silicon powder embedding melting impregnation method; the structured laying of the ceramic powder positively superimposes the capillary force in the brake disc and the furnace pressure; the ceramic production efficiency is increased by 30%, and the waste rate is reduced to below 1%. In the structure aspect, the porosity of the brake disc prepared by the application is reduced to 2%-3%; in the material composition aspect, the ceramic phase in the matrix is formed by Si-Cr-C three elements to form crystals, so that the wear resistance of the composite material is increased by three times; the brake disc prepared by the application has excellent wear resistance and friction performance, and is suitable for the aerospace field.

This invention provides a braking method and braking device for a brushless DC motor. The brushless DC motor includes multiple bridge arms, each bridge arm having an upper bridge arm switch and a lower bridge arm switch connected in series. The bridge arms are connected to a stator coil of the brushless DC motor through a node between the upper and lower bridge arm switches. The method includes: receiving a braking signal for braking the brushless DC motor; generating a first control signal in response to the braking signal to control all upper bridge arm switches to open or control all lower bridge arm switches to open; and generating a second control signal in response to the braking signal to control all lower bridge arm switches or all upper bridge arm switches not controlled by the first control signal to be turned on in a predetermined manner to generate a gradually increasing current in all bridge arms and all stator coils to brake the brushless DC motor.

The utility model discloses a big load outer rotor axle brake tractor, related to tractor technical field, including the casing body, the inside cooperation and installation of casing body have stator, the outside cooperation and installation of stator have rotor, then rotor is fixed on transmission shaft, transmission shaft is away from the one end cooperation and installation of stator have axle brake assembly and tractor wheel, wherein axle brake assembly still with outside fixed, then outside fixed in the outside of casing body, be equipped with controller in the top of casing body, when the magnetic core power off, brake spring will armature pop out quickly, armature top brake disc through the tooth cylinder along the gear shaft sliding, and make brake disc and friction disc close, realize transmission shaft brake under the action of friction, axle brake assembly direct action on the axle, relatively simple structure, the number of parts is less, the trouble point also reduces accordingly, and the reliability is higher, and the brake mode of axle brake assembly makes the braking process more stable, and the noise is smaller, is favorable to create the quiet living environment.

The invention relates to the technical field of ship crane braking, in particular to an electric ascender for hoisting, which comprises a support frame, a motor, a brake disc and a winch, a groove is formed in the outer side of the brake disc, mounting grooves are formed in the outer side of the brake disc and the inner side of the groove, and repulsion magnet pieces are arranged in the mounting grooves in the outer side of the brake disc. According to the electric ascender for lifting and hoisting, through the synergistic effect of the arranged hydraulic braking mechanism and magnetic braking, when the hydraulic driving arc-shaped plate drives the attraction magnet piece II to extrude the brake disc, the attraction magnet piece I is driven by the hydraulic driving arc-shaped plate, and the attraction magnet piece II is driven by the attraction magnet piece II to extrude the brake disc; the repelling magnet pieces and the attraction magnet pieces II on the outer side of the brake disc form repulsive force to assist braking, and the attraction magnet pieces I and the attraction magnet pieces II in the grooves form attraction force enhanced attachment, so that the problem of performance degradation of traditional braking in a severe environment is effectively solved, and stable braking under heavy load or complex working conditions is ensured.

The application relates to a kind of station driving type forklift auxiliary driving brake control methods, the station driving type forklift adopts drive wheel and load wheel common braking, the station driving type forklift auxiliary driving brake control method is: after detecting that forklift has brake operation, collection forklift actual running speed v1;When the ideal speed n2 of drive wheel of slip rate S=20% is calculated, the actual speed of drive wheel is adjusted to the ideal speed n2 of drive wheel by adjusting the brake torque of drive motor;When the ideal speed n3 of load wheel of slip rate S=20% is calculated, the actual speed of load wheel is adjusted to the ideal speed n3 of load wheel by adjusting the brake torque of load wheel brake.The application controls the slip rate of forklift at 20%, can effectively and controllable brake force is applied, avoid the problem that brake distance is relatively long caused by brake force application too small and the problem that wheel lock caused by brake force application too large.

The invention provides a dual-motor anti-backlash heavy-load numerical control rotary table, and belongs to the field of numerical control machine tools, the dual-motor anti-backlash heavy-load numerical control rotary table comprises a main base body, a base protection top block is fixedly connected to the top surface of the main base body through a horizontal bolt, and a working platform is horizontally arranged on the top surface of the base protection top block. The rotary table can accurately rotate and position according to a preset angle, and a high-precision machining reference is provided for a workpiece, so that the size precision and the shape precision of a machined part are remarkably improved, and the requirement for high-precision machining is met. For example, in the machining process of aerospace parts, the rotary table can ensure that the machining precision reaches the micron level for machining of some holes, contours and other characteristics with extremely high precision requirements, the quality and performance of the parts are effectively improved, overall workpiece machining can be more accurate and efficient, and the machining efficiency is improved. And multiple directions can be expanded to meet the machining requirement, the bearing capacity is greatly improved, and the range of the types of machined workpieces is further widened.

A pirate ship braking device comprises a foundation support, a braking frame is vertically installed on the foundation support through a power driving device, a vertical support is installed on the braking frame, a transverse support is installed on the vertical support, a braking groove used for being matched with a pirate ship in a braking mode is formed in the transverse support, and braking leather is arranged in the braking groove. The bottom of the vertical support is installed on the brake frame through a plurality of vertically-arranged vertical buffers, the two sides of the transverse support are fixedly connected with the vertical support through a plurality of transversely-arranged transverse buffers, a transverse sliding block is further arranged at the bottom of the transverse support, and a transverse sliding rail matched with the transverse sliding block is arranged on the vertical support. Vertical sliding rails are arranged on the two sides of the brake frame, and vertical sliding blocks vertically installed on the vertical sliding rails in a sliding mode are arranged on the two sides of the vertical support. The bearing is safe and reliable, friction loss and extra stress can be effectively reduced through the improved design, and the durability and reliability of the bearing can be improved.

The utility model discloses an intelligent anti-explosion pulling rope device which comprises a shell and a rotating disc. A handle is arranged on the shell, and an accommodating space is formed in the shell; the turntable is rotatably arranged in the accommodating space; a control circuit board, a brake lock catch, a torsion spring and a nickel-titanium wire are arranged in the shell; the brake lock catch is arranged beside the turntable in a back-and-forth swinging manner, and the torsional spring enables the brake lock catch to be far away from the turntable; the rotating speed and rule of the rotating disc are collected through the sensor, information is transmitted to the control circuit board, when the rotating speed reaches a set anti-explosion impact value, the nickel-titanium wire is powered on to deform and contract, the brake lock catch is pulled to conduct braking, the control circuit board enables the nickel-titanium wire to be powered off immediately after being powered on for a short time, and the nickel-titanium wire is cooled to recover deformation; and the brake lock catch restores to the original position again under the action of the torsion spring, the brake is stopped, the turntable can normally rotate again, the product is stable in brake, the anti-explosion impact value can be set as required, and the operation is very convenient.

The invention relates to the technical field of generator set assembly, in particular to split type assembly generator set equipment which comprises a split type assembly bottom plate and a driving sliding block, a stator fixing seat and a rotor fixing seat are each provided with a brake mechanism, and each brake mechanism comprises a folding air bag and a fixing plate. The stator fixing base and the rotor fixing base are connected with an air pump through ventilation pipes, the air pump is fixedly arranged on the driving sliding block or the stator driving sliding block, and after the air pump is started, the folding air bag is used for pushing the fixing plate outwards. When the air pump is started to inflate the folding air bag, the fixing plate can be quickly and effectively moved, the generator stator or the generator rotor can be conveniently placed, the braking process is stable, impact and abrasion possibly caused by a traditional braking mode are reduced, after inflation of the fixing plate is stopped, the fixing plate recovers to the original shape under the action of the spring, and the braking effect is good. And furthermore, the generator stator is clamped and fixed through the arc-shaped supporting plate and the stator guide supporting rod, so that the assembly efficiency is improved.

The utility model provides automobile brake assembly structure relates to brake assembly technical field, include: brake disc, the cooling hole that is equidistantly seted up with ring array shape is seted up on brake disc outer wall, cooling hole is circular hole shape structure, the cooling groove of cylindrical slot structure is seted up with one cooling groove in every cooling hole place on brake disc outer wall, the diameter of cooling groove is greater than the diameter of cooling hole. The utility model is in the heat dissipation performance aspect, the ring array cooling hole of brake disc outer wall cooperates the cooling groove of greater diameter, significantly promotes gas access efficiency, enhances the airflow cooling effect, the semicylindrical first auxiliary groove on its upper and lower end surface not only expands the heat dissipation area, still strengthens heat dissipation through increasing surface roughness, the arc second auxiliary groove and semicylindrical third auxiliary groove on the brake pad of the utility model further expand the heat dissipation area, under the synergistic effect of multiple structures, effectively reduce the temperature of brake disc and brake pad in the braking process, avoid the brake performance attenuation caused by high temperature.

The invention provides a multi-redundancy intelligent braking system for a heavy vehicle and a control scheme of the multi-redundancy intelligent braking system. The multi-redundancy intelligent braking system comprises a regenerative braking layer; a continuous retarding brake layer; a friction brake layer; the integrated control unit is connected with the regenerative braking layer, the continuous retarding braking layer and the friction braking layer, and when a driver braking request signal and a vehicle state signal are received, the integrated control unit sends corresponding instructions to all the braking layers according to a preset cooperative control strategy so as to distribute needed braking force. The three braking layers and the integrated control unit connected with the three braking layers are arranged, the three braking layers are mutually backed up, even if one layer (even two layers) fails, the system can still provide effective braking, and the braking safety and the braking stability are effectively improved.

The utility model discloses a kind of lightweight permanent magnet synchronous traction machine, it is related to traction machine technical field, including traction machine shell, stator and rotor are equipped in the inside of traction machine shell, wherein stator is fixed in the inside of traction machine shell;The rotor of the rotor traverses stator inside, and the both ends of rotor are respectively connected with traction machine shell and outer end plate by bearing cooperation;The outer end plate is fixed by bolt with traction machine shell;The rotor one end cooperation is installed with traction wheel, and the other end is equipped with shaft brake mechanism;The utility model, when traction machine is power failure, the magnetic field of magnetic yoke disappears, armature is forced under the top of spring cone-shaped brake disc and cone-shaped friction disc friction, to realize the shaft brake of rotor;This stop mode is directly acted on shaft, relatively simple structure, the number of parts is less, fault point also correspondingly reduces, and reliability is higher;And the braking mode of shaft brake assembly makes braking process more stable, noise is smaller, it is favorable to create quiet living environment.

This utility model relates to the field of speed reducer technology and discloses a traveling speed reducer, including a rear flange, an input shaft rotatably connected to the rear flange, a first-stage planetary reduction mechanism, a second-stage planetary reduction mechanism, a brake end cover, and a brake shaft rotatably connected to the brake end cover. The first-stage planetary reduction mechanism includes a first-stage sun gear, first-stage planet gears, a shaft disc, and a first-stage gear ring. The second-stage planetary reduction mechanism includes a second-stage sun gear, second-stage planet gears, a planet carrier, and a second-stage gear ring. A hub is fixedly connected to the outer side of the first-stage gear ring. This utility model is equipped with a brake shaft, which can be connected to an external brake for braking, thereby enabling the speed reducer to have a braking function. This can effectively reduce the impact during equipment start-up and shutdown, reduce component wear, extend equipment service life, and can also immediately stop the machinery in case of mechanical failure or motor malfunction, ensuring system safety and providing emergency stop capability, which can help achieve more precise motor control.

The utility model discloses a polyurethane tire with a symmetrical tread pattern structure, which relates to the field of tires, and comprises a tire body and tread patterns, the tread patterns are symmetrically distributed by taking the central axis of the tire as a symmetry axis, the tread patterns are composed of a plurality of independent pattern block units, each pattern block unit is of a rhombus structure, and the pattern block units are arranged on the tire body. According to the utility model, the tread patterns are symmetrically distributed by taking the central axis of the tire as the symmetry axis, so that the left side and the right side of the tire are uniformly stressed in the running process, and when a vehicle turns, changes lanes or runs in a straight line, the tread patterns are uniformly stressed; the left-right symmetrical pattern structure can ensure that the friction force between the tire and the ground is uniformly distributed, so that the problems of running off tracking, side slipping and the like caused by asymmetrical patterns are avoided, the running stability of a vehicle is improved, and a driver can more accurately control the running direction of the vehicle.

The present application relates to the technical field of braking of moving objects, and provides a multi-array embedded baffle type buffer, which comprises a buffer bottom plate and a plurality of baffle arrays arranged in the inner side of the buffer bottom plate and spaced along the length direction of the buffer bottom plate, each baffle array comprises a plurality of spaced baffles, and a gap is formed between two adjacent baffles in each baffle array; the inner wall of a launching cylinder has a plurality of cylinder wall grooves matched with the buffer bottom plate, and a plurality of buffer bottom plates are matched and installed in the corresponding cylinder wall grooves respectively; when the movable base moves towards the outlet of the launching cylinder at a certain speed, the movable base can hit the baffles, so that the baffles are plastically deformed, the multi-array embedded baffle type buffer is adopted, the occupied space is small, the baffles adopt a multi-array form, the required energy for bending deformation is small, and the low-impact braking effect on the movable base is realized.

The utility model belongs to the technical field of port mechanical equipment, and particularly relates to an anti-collision system for a shore and field bridge cart, which comprises a multi-line laser radar group arranged at four door legs of a shore bridge or a field bridge and used for detecting a track and surrounding obstacles; the laser range finder is matched with the multi-line laser radar group and assists in detecting the obstacle distance; the calculation unit is used for receiving and processing detection data of the multi-line laser radar group and the laser range finder and generating an early warning signal; and the control system controls the cart to slow down or stop according to the early warning signal. According to the utility model, the multi-line laser radar detects obstacles 7 m ahead of time and triggers deceleration, and triggers stop 5 m ahead of time, so that the traditional'braking after collision 'mode is thoroughly changed, 'hard-to-hard' physical contact is eliminated, and the structural damage of the crane body, the buffer rod and the obstacles is avoided.

This invention relates to the field of brake calipers and discloses a spring structure for the return of friction pads in disc brakes. The structure includes a support spring plate arranged laterally between an inner and outer friction pad. Both ends of the support spring plate are fixedly connected to support wings with elastic recovery capability. The support wings are axially oriented and include a central fixing portion and support ears formed on both sides of the fixing portion. The fixing portion and the support spring plate are fixedly connected. The support ears support the inner and outer friction pads respectively. Each support ear includes a first support opening at its end for supporting a back plate on which the friction pads are mounted. The first support opening is formed by a first limiting piece and a second limiting piece, which together form an "L" shape. The first limiting piece is used to fit against the inner surface of the back plate, and the second limiting piece is used to fit against the back side of the caliper. This return structure has advantages such as stable and reliable return, no vibration, and long service life.

The application relates to a vehicle electric control hydraulic brake booster device and belongs to the technical field of vehicle brake systems. A controller assembly is electrically connected with a motor assembly, a motor shaft of the motor assembly is interference riveted with a sun gear of a planetary reduction mechanism, the planetary reduction mechanism is assembled with a ball screw transmission mechanism, a brake master cylinder assembly is connected with the motor assembly, a positioning groove of a master cylinder body in the brake master cylinder assembly is connected with a rotation-limiting outer boss of a rotation-preventing sleeve in the ball screw transmission mechanism in a matched mode, a hydraulic sensor is installed at an output end of the master cylinder body, and a liquid storage tank assembly is fixedly connected with the brake master cylinder assembly. The device has the advantages that the structure is novel, compared with a conventional vacuum booster, the device can provide greater braking force by using the atmospheric pressure generated boost force, is suitable for vehicles with greater load; compared with a conventional air pressure brake booster device, the device occupies less space, is convenient to install, has small working noise, stable braking, low energy consumption, low manufacturing cost, is suitable for low-temperature working environments, and is suitable for a wide range of vehicle models.

The application discloses a composite buffer type low-damage brake performance enhancing device, which comprises a brake disc, a first brake assembly and a U-shaped block arranged on the brake disc, a blocking mechanism arranged on the U-shaped block, a driving mechanism arranged on the U-shaped block and a second brake assembly arranged on the driving mechanism, and the U-shaped block is inverted U-shaped; the second brake assembly comprises double-cylinder friction mechanisms and single-cylinder friction mechanisms which are simultaneously arranged on the output end of the driving mechanism, an E-shaped block is arranged on the double-cylinder friction mechanisms, and the lower middle part of the E-shaped block is slidably connected with the upper end of the single-cylinder friction mechanisms; the blocking mechanism is used for blocking the E-shaped block, so as to block the movement of the double-cylinder friction mechanisms and make the single-cylinder friction mechanisms be able to be compressed on both sides of the brake disc; air inlet mechanisms and air outlet mechanisms are arranged on the upper end of the E-shaped block, and a first air outlet groove for air outlet is arranged on the blocking mechanism. The application has the advantages of high-efficiency heat dissipation, adjustable composite brake mode, low abrasion and buffering and damping.

The utility model relates to a luggage trundle which comprises a trundle support and a trundle body, a trundle locking assembly on the trundle support comprises a driving component and a locking component, a pin tumbler containing hole is formed in the trundle support, and the locking component is a locking pin tumbler arranged in the pin tumbler containing hole. The driving component is configured to be a sliding block which is limited on the trundle support and slides in the longitudinal direction, a locking piece control face on the sliding block comprises a locking keeping face, a middle inclined face and an avoiding face, when the trundle locking assembly is in an unlocking state, the driving component slides to the avoiding face to correspond to the locking marble in position, and the locking marble can move to be separated from the annular locking part; when the trundle locking assembly is in a braking state, the driving component slides to the locking keeping face and corresponds to the locking marble in position, the locking marble is limited by the locking keeping face and is in braking fit with the annular locking part, and the middle inclined face of the sliding block can push the locking marble to move from the unlocking position to the locking position. The driving component is matched with an elastic reset element. The device has the advantages of simple assembly and reliable work.