199results about How to "Fast braking" patented technology

The utility model discloses a brake main shaft capable of braking stably, which relates to the technical field of brake main shafts and comprises a brake main shaft main body and a brake disc. The servo motor drives the supporting shaft and the gear to rotate reversely, the gear rotates reversely to drive the fluted disc, the connecting disc and the two sets of arc-shaped grooves to rotate forwards, the two sets of arc-shaped grooves rotate forwards to push the distance between the two sets of connecting shafts to be gradually shortened, and the two sets of connecting shafts move to drive the two sets of clamping brake pads to move. The two sets of clamping brake pads slide on the inner sides of the sliding grooves, the inner sides of the two sets of clamping brake pads gradually get close to the outer wall of the brake disc, the outer wall of the brake disc is braked through the two sets of clamping brake pads, so that the brake disc brakes the brake main shaft body, and the brake main shaft is stably braked through the clamping brake pads; through mechanical braking, the braking mechanism of the braking main shaft is simple in structure, reliable in action, large in braking torque, rapid in braking and convenient to maintain.

The utility model discloses a novel impulse turbine brake device which is characterized in that the center of a power generation rotating wheel disc is connected with a main shaft of a generator, a plurality of power generation water buckets are arranged around the power generation rotating wheel disc, an annular water distribution pipe is arranged on the outer sides of the power generation water buckets in the circumferential direction, and a plurality of power generation water spraying devices are arranged on the inner side of the annular water distribution pipe; a plurality of brake water buckets are arranged on the brake rotating wheel disc in a surrounding mode, a water pipe is arranged on one side of the end of the annular water distribution pipe, and a brake spray pipe is arranged at the tail end of the water pipe. When the power generation water turbine works, the braking water turbine shrinks in the concave cavity of the power generation rotating wheel disc, and power generation is not affected; when the power generation water wheel stops or breaks down, the brake shaft is controlled by the hydraulic operating mechanism to extend and drive the brake water turbine to enter a brake station, and the hydraulic needle valve on the brake spray pipe is opened, so that the impulse water turbine is quickly braked. The device effectively improves the braking efficiency and the operation stability of the impulse turbine, and is worthy of being vigorously popularized in future impulse power stations.

The invention provides a hydraulic transmission bulldozer reversing control method and a bulldozer, and belongs to the field of bulldozer control. According to the technical scheme, the hydraulic transmission bulldozer reversing control method comprises the steps that when the speed gear of a target driving gear is higher than the speed gear of a current driving gear, a direction gear is switched firstly, and then the speed gear is lifted to the speed gear of the target driving gear; when the speed gear of the target driving gear is lower than the speed gear of the current driving gear, the current speed gear is lowered to the speed gear of the target driving gear, the direction gear is kept unchanged at the moment, and then the direction gear is switched; and when the target gear speed gear is equal to the current gear speed gear, the direction gear is directly switched. According to the scheme, a driver only needs to directly conduct gear reversing operation, then the bulldozer conducts reversing automatically through gear judgment, the operation process is simplified, meanwhile, when the bulldozer conducts reversing at a low speed gear all the time, and gear shifting impact is reduced.

The invention discloses an anti-tilting pressure container tilter which comprises a base frame and a container bracket, supporting vertical frames are symmetrically and fixedly installed on the left side and the right side of the base frame, the upper ends of the supporting vertical frames are rotationally connected with the container bracket, a hydraulic pushing and lifting mechanism is installed on the side face of the base frame, holding devices are symmetrically installed on the container bracket, and side face guiding assemblies are symmetrically installed on the two sides of the base frame. A lower tight brake pressing plate and an upper tight brake pressing plate are arranged between the interlayer and the clamping plate. The hydraulic lifting mechanism drives the rotating arm to rotate by 90 degrees anticlockwise, the container bracket rotates by 90 degrees anticlockwise, the pressure container is arranged in the container bracket, then the pressure container is turned over from the transverse direction to the vertical direction, and the whole device is integrated and more flexible in practical application; the telescopic end is prevented from deviating due to overlarge stress; and certain safety is improved.

The utility model relates to the technical field of generator rotor detection, in particular to dynamic balance detection equipment for a generator rotor, which comprises a test platform provided with a transmission motor. A transmission shaft; the end portion of the transmission shaft is fixedly connected with a coupler, the test platform is provided with a rapid locking device, and the rapid locking device is provided with an auxiliary supporting device. According to the utility model, the effect of rapidly braking the transmission shaft is realized through the rapid locking device by utilizing the friction force of extrusion, so that the purpose of braking the generator rotor under inertia rotation is realized, an operator can conveniently and rapidly disassemble and replace the rotor after rapid locking and braking, the blanking speed of the detected rotor is improved, and the working efficiency is improved. Therefore, the purpose of improving the overall rotor detection rate is achieved, the rotor is temporarily supported through the auxiliary supporting device in the mounting or dismounting period, and the purpose of conveniently mounting and dismounting the rotor can be achieved.

The invention discloses a brake device for preventing fault inversion of an induced draft fan, and particularly relates to the technical field of braking, the brake device comprises a support, a sleeve frame, a concave frame and a peripheral synchronous embedded brake mechanism, and further comprises a lateral synchronous meshing brake mechanism and a timely proofreading detection assembly; wherein the peripheral synchronous embedded brake mechanism comprises a gear motor, a rotating shaft, a driving gear, a driven gear, a rotating ring, a linkage ring, a positioning ring, a brake wheel, a butt joint shaft, a plurality of anti-inversion grooves and a plurality of inclined sliding frames. According to the invention, the brake mechanism is synchronously embedded at the periphery, so that the brake wheel has the advantages of realizing embedded brake for a plurality of anti-inversion grooves outside the brake wheel, quickly performing brake and being better in brake timeliness, thereby solving the problem that once the torque force of shaft body inversion is greater than the brake friction force, the inversion is still generated, and the service life of the brake wheel is prolonged. Braking is difficult in time to achieve rapid anti-reverse braking, and the braking timeliness is poor.

The invention discloses a self-adaptive track sanding device and method for a complex curved surface. The device comprises a flange seat, a universal cross arranged at the front end of the flange seat, a motor body arranged in the universal cross, a brake ring and a polishing disc, wherein the brake ring and the polishing disc are arranged at the output end of the motor body; the universal cross is of a circular ring structure and is rotationally connected with the front end of the flange base through a first pin shaft, the upper portion of the motor body penetrates through the universal cross, and the motor body and the universal cross are rotationally connected through a second pin shaft. Connecting lines respectively formed by the first pin shaft and the second pin shaft are crossed, and the motor body realizes two-degree-of-freedom rotation through the first pin shaft and the second pin shaft. The motor body rotates through the universal cross to adjust the binding face between the grinding disc and the to-be-ground curved surface to achieve self-adaption to the to-be-ground curved surface, it can be guaranteed that the normal of the grinding disc coincides with the normal of the curved surface without precisely adjusting the posture and the positioning precision of a robot, and therefore the good grinding effect is obtained.

The invention relates to the technical field of steel backing stamping, and provides an open type inclinable punching machine and method for steel backing stamping, the open type inclinable punching machine for steel backing stamping comprises a punching machine frame, a stamping assembly, a stamping machine frame, a displacement assembly, a braking assembly, a mounting groove, a lifting seat, a position adjusting assembly and a fixing assembly, and the punching machine frame is provided with a material loading area and a stamping area; the material carrying area is located on the lower portion of the punching area, the punching assembly is installed in the punching area, the punching rack is fixedly installed in the punching area, the displacement assembly is installed on the punching rack, the brake assembly is installed on the punching rack, an installation groove is formed in the material carrying area, a lifting base is installed on the installation groove in a sliding mode, and the position adjusting assembly is installed on the punching rack. By means of the technical scheme, the problems that in the prior art, due to the fact that the distance between the upper die and the lower die is unreasonably adjusted, accurate matching between the upper die and the lower die is difficult, and a workpiece deforms are solved.

The utility model discloses a variable displacement piston pump with a compound control function, a control valve and an oil supplementing pump (8) are integrated on the variable displacement piston pump, a driving electromagnetic valve mechanism (3) is integrated on the control valve, the oil supplementing pump (8) is connected with a variable displacement cavity in the variable displacement piston pump through the driving electromagnetic valve mechanism (3), a switch valve mechanism (7) is arranged on a rear cover (20) of the variable displacement piston pump, and the switch valve mechanism (7) is connected with the control valve. A branch oil way is arranged in a rear cover (20) of the variable displacement piston pump, the branch oil way is provided with an oil inlet end and two oil outlet ends, the oil inlet end of the branch oil way is connected with an oil supplementing pump (8), the two oil outlet ends of the branch oil way are connected with an active electromagnetic valve mechanism (3) and a switch valve mechanism (7) respectively, and the switch valve mechanism (7) is connected with a shell cavity of the variable displacement piston pump. The utility model has the advantage of high safety.

The invention relates to an aircraft generator rotor braking device which comprises a hollow shaft of a generator, an elastic shaft assembly, a mounting shell assembly, an elastic rotation stopping assembly and an electromagnetic driving assembly. The output end of the electromagnetic driving assembly is connected with the limiting assembly, and the electromagnetic driving assembly is used for driving the limiting assembly to move so as to relieve limiting of the elastic rotation stopping assembly, so that the rotation stopping part of the elastic rotation stopping assembly enters a rotation stopping groove formed between the cam assembly and the inner wall of the concave cavity of the mounting shell assembly through the guide hole structure. And the hollow shaft stops rotating until the connecting disc assembly is broken. According to the invention, the quick braking of the high-rotating-speed rotor is ensured, so that the elastic shaft assembly is automatically separated from the engine accessory casing, the braking reliability is improved, and the possible secondary fault of the engine accessory casing is completely eradicated.

The invention discloses an earthquake-induced high-speed train derailment whole process state test simulation system. A vehicle-track-lower foundation structure model comprises a lower foundation structure model, a track system model and a vehicle model; the acceleration system is located at one end of the track system model; the braking system is located at the other end of the track system model; the earthquake simulation device is connected to the lower foundation structure model; the monitoring system comprises a vehicle-mounted monitoring subsystem and a trackside monitoring subsystem. And the data acquisition system is used for acquiring and processing monitoring data of the monitoring system. The method is used for solving the problem that in the prior art, accurate reproduction of the whole derailment process of the high-speed train under the earthquake condition and effective assessment of the damage of the post-earthquake track structure system cannot be achieved, and the purposes of accurate reproduction of the whole derailment process of the high-speed train induced by the earthquake and effective assessment of the damage of the post-earthquake track structure system are achieved.

The invention discloses a spent fuel loading device with an emergency function, and relates to the field of high-temperature gas cooled reactor loading and unloading, the spent fuel loading device with the emergency function comprises a main frame, a driving assembly and a loading tank, a welding process is adopted for joints on the main frame, and opening and closing of a loading tank cover are controlled through the driving assembly; and then the fuel is loaded and unloaded from the charging tank. The main frame is fixedly installed between a maintenance room floor and an operation room floor, is used as a mechanism foundation and comprises guide rails arranged on the surface of the main frame, the guide rails extend from top to bottom on the two sides of the main frame, an operation opening is formed in the maintenance room floor, and a movable opening is formed in the operation room floor. The driving assembly comprises a power piece arranged at the top of the main frame, a telescopic piece detachably connected with the power piece and a locking piece fixedly installed on the telescopic piece, the telescopic piece slides on the guide rail, and loading can be effectively achieved through a manual emergency means when a motor of the lifting mechanism breaks down.

The utility model discloses a scram mechanism of conveyer belt, including the casing, be equipped with speed sensor, solid-state relay, spacing subassembly and tumbler in the casing, the signal input end of speed sensor is electrically connected with tumbler, the signal output end of speed sensor is connected with the signal input end of solid-state relay, and the signal output end of speed sensor is connected with the signal input end of solid-state relay. The two ends of the rotating arm are connected with pull ropes, the ends, away from the rotating arm, of the pull ropes are connected with servo electric cylinders, the servo electric cylinders are provided with first tension sensor signal receivers, and the pull ropes are provided with tension sensors and rope tightening assemblies. According to the sudden stop mechanism, the pull rope is tightened, the sudden stop mechanism rapidly achieves sudden stop of the conveying belt through small changes of the pull force of the pull rope, the reaction speed is high, meanwhile, when one side of the pull rope is broken, the pull rope on the other side immediately and rapidly makes a response through changes of the pull force, sudden stop of the conveying belt is achieved, and reliability is improved.

The electromagnetic brake comprises a brake disc, an armature, a stator, an electromagnetic coil and a compressed spring, the stator is provided with a stator inner cavity, a stator protruding column protruding towards the direction close to the armature is arranged in the middle of the cavity wall of one side of the stator inner cavity, and the stator protruding column is provided with a protruding column through hole. The electromagnetic coil is arranged in the stator inner cavity and sleeved on the stator protruding column, the compression spring is sleeved outside the stator protruding column and located in a central through hole of the electromagnetic coil, an armature protruding ring is arranged in the middle of the surface of one side of the armature, part or all of the armature protruding ring is arranged in the protruding column through hole, and the armature and the brake disc are both located in the stator inner cavity. The electromagnetic force of the electromagnetic coil to the armature is increased on the premise that the volumes of the electromagnetic coil and the brake are not increased, the requirements of small volume and large magnetic force can be met at the same time, enough distance between the armature and the stator can be ensured, the armature and the brake disc can be thoroughly separated when the brake is released, and the service life of the brake is prolonged. And friction noise between the brake disc and the armature is eliminated.

The present invention relates to the field of motor structure, and in particular to a motor brake device and a motor with the device. The brake device comprises a fixed ring, a rotating cylinder, a connecting rod, a swing rod, a gear, a rack and an electromagnet. The fixed ring is connected and fixed to the rear end cover of the motor, and the fixed ring and the rotor of the motor are coaxial. A plurality of rotating cylinders are distributed around the circumference of the fixed ring, each rotating cylinder is sleeved outside the fixed ring, and each rotating cylinder is restricted to rotate only relative to the fixed ring through the connection of the connecting shaft. The connecting rod and the swing rod are used to connect two adjacent rotating cylinders, so that when one of the rotating cylinders rotates, each rotating cylinder can be driven to rotate in sequence through each connecting rod and the swing rod. When the motor is powered off, the electromagnet loses the magnetic force of adsorbing the rack at the same time, so that the spring pushes the rack to move and drives the gear to rotate while driving the rotating cylinder to rotate, and drives each swing rod to swing through each connecting rod, so that each swing rod swings until each brake pad presses against the rotor of the motor to achieve rapid braking.

A method for operating a drive unit of a machining tool, in which the drive unit has a brushless DC motor and an intermediate circuit connected upstream of the DC motor, in which the DC motor is controlled by a speed controller and operates at a nominal speed in an operating mode, and in which the intermediate circuit is connected upstream of the DC motor. The method has an operating mode of braking the DC motor to a braking speed below the nominal speed, wherein the DC motor is controlled in the braking mode with a reference variable based on an intermediate circuit voltage of an intermediate circuit.

The utility model discloses a composite type automobile brake pad structure which comprises a back plate and a brake pad body. The heat insulation plate is fixedly mounted on the back plate; the friction block is arranged on the side wall of the heat insulation plate in a sliding mode, and inclined grooves are symmetrically formed in the side wall of the friction block; the grinding block is arranged in the chute in a sliding manner; the connecting assembly at least comprises an elastic plate which is fixedly installed on the side wall of the heat insulation plate and fixedly connected to the grinding block. According to the composite type automobile brake pad structure, the contact area of the friction block and the brake disc is reduced through the inclined grooves formed in the side wall of the friction block, so that the contact area is reduced while an automobile decelerates, heat generated during friction is reduced, and deformation of a steel assembly in the friction block caused by heat accumulation is avoided; and dust adhered to the brake disc can be scraped through the formed inclined grooves, so that the braking effect is improved, heat generated by the brake pad during braking is reduced, the service life of the brake pad is prolonged, and traffic accidents caused by brake pad failure due to high temperature are effectively reduced.

The utility model discloses a safety brake device for a pneumatic motor, which comprises a motor, a connecting port is arranged above the motor, a mounting seat is arranged on the motor, a first brake pad and a second brake pad are arranged on the mounting seat, and the first brake pad and the second brake pad are respectively positioned on two sides of an output end of the motor. A cylinder barrel is arranged on the mounting seat, an air inlet and an air outlet are formed in the cylinder barrel, air entering the motor from the connecting port is reduced while the motor needs to be braked, air enters the cylinder barrel through the air inlet, and the pushing plug is assisted to slide until the pushing plug pushes the first brake pad to the output end of the motor; the pneumatic motor is braked at the same time from two aspects, the braking speed is increased, loss caused by friction between the output end of the motor and the brake pad is reduced, meanwhile, the second brake pad is used for assisting the first brake pad to brake the output end of the motor, the braking effect of the braking device is guaranteed, and braking failure is avoided.

This invention discloses a novel automotive brake clearance adjusting arm device, comprising an adjusting arm housing, a ratchet, a ratchet block, a forward adjusting rod, a reverse adjusting rod, a return spring, a push-opening structure, a forward large gear, and a forward small gear. The adjusting arm housing has a ratchet hole and a groove on its inner top. The ratchet is rotatably mounted in the ratchet hole and is driven by the camshaft. The reverse adjusting rod is rotatably connected inside the adjusting arm housing. The push-opening ratchet teeth are fixed on the reverse adjusting rod. The ratchet block has an elliptical hole, and the push-opening ratchet teeth are located within the elliptical hole. Multiple ratchet teeth are provided at the bottom of the ratchet block and mesh with the ratchet teeth of the ratchet. A groove is provided on the inner side of the adjusting arm housing, and the return spring is fixed within the groove, with its bottom end abutting against the ratchet block. The forward adjusting rod rotates inside the adjusting arm housing, and a forward small gear is connected to it. One end of the ratchet has a forward large gear, and the forward small gear is driven by the forward large gear.

The invention discloses an integrated self-locking braking system and method. The system comprises a motor assembly, a main shell, a transmission mechanism, a main cylinder and a liquid storage pot. The motor assembly comprises a motor and a motor control unit, and the motor control unit is integrated behind the motor; the transmission mechanism comprises a worm, a turbine, a turbine shaft and a main cylinder ejector rod, the worm and the turbine are meshed to form a worm and gear transmission pair, the turbine shaft, the main cylinder ejector rod and a ball form a ball screw transmission pair, and the turbine is fixedly matched with the turbine shaft; the main cylinder is fixedly connected with the main shell through bolts, a main cylinder piston is arranged in the main cylinder in a matched mode, the main cylinder piston is in sliding fit with a main cylinder body and is sealed through a sealing ring, a main cylinder high-pressure cavity is formed in the main cylinder piston, and the outer portion of the main cylinder piston makes contact with a main cylinder ejector rod. And the output torque of the motor pushes the piston of the main cylinder to telescopically move in the main cylinder through the worm and gear transmission pair and the ball screw transmission pair so as to generate and release brake pressure.

The monorail personnel transportation device for the coal mine tunnel comprises a rail assembly and a transportation vehicle advancing on the rail assembly, the transportation vehicle comprises a driving part, a cabin and a bearing trolley, the rail assembly comprises a rail, the driving part comprises a hydraulic motor and a friction wheel, the friction wheel can roll on the rail, and the cabin is arranged on the rail. Through driving of the hydraulic motor and friction wheels on the two sides, the running speed is increased, the driving force is larger, the gradeability is higher, running is more stable, a rail is clamped through a brake block of a brake assembly, rapid braking can be achieved, the transport capacity of a single train can be improved according to the needs of personnel through the modular marshalling design, and the situation that the train does not need to turn around to go back and forth is achieved through the two-way cockpit configuration; the air spring damping and rotation structure enables operation to be more stable, the track structure supports rapid extension, and the narrow fuselage design enables the device to be suitable for a complex narrow roadway network of a mine.

According to the hump type bidirectional slope ship lift, the slope ship lift is arranged according to the actual terrain, the operation efficiency of the slope ship lift is improved, and the operation energy consumption of the slope ship lift is reduced; the ship lift is a hump type dry and wet ship lift which is mainly suitable for natural slope terrains on the two sides of a high dam. The bidirectional inclined ship lift comprises an upstream inclined ship lift, a middle channel and a downstream inclined ship lift, the upstream slope ship lift and the downstream slope ship lift are connected through the middle channel; two ships can run in parallel at the same time in the middle channel. And balance weight units are arranged in the upstream inclined ship lift and the downstream inclined ship lift and are used for balancing the lifting force of the ship reception chamber.

The utility model discloses a medical lathe with automatic transfer function, including base, transfer mechanism and brake mechanism, its upper end is equipped with the liftable bed board, transfer mechanism: it includes moving plate, receiving roller, guide roller no. 1, guide roller no. The receiving rollers are arranged at the upper end and the lower end of the left side of the base correspondingly, the first guide roller is rotationally connected to the left side of the upper end of the base, the second guide roller is rotationally connected to the right end of the base, and the two receiving rollers are in transmission connection through the transfer belt. Through cooperation of the moving plate and the transfer belt, a patient can be transferred easily, stably and rapidly, the burden of medical staff is relieved, the safety of the patient is guaranteed, the two brake pads move relatively to make contact with the rotating shaft, huge friction force can be avoided, then the medical lathe is effectively braked, and the medical lathe is prevented from deviating in the transfer process.

The utility model discloses a hydraulic pressure test device for intelligent pressure vessel equipment, which comprises a rack and a human-computer interface touch screen, automatic brake mechanisms are fixed on two sides of the bottom of the rack, each automatic brake mechanism comprises a hydraulic telescopic cylinder, a thread installation clamping column and an anti-skid rubber supporting leg, a water storage tank is fixed in the rack, and a water pump is fixed in the water storage tank. And a fixed seat is welded on the rack. According to the utility model, the sound insulation protective cover, the sound pickup and the like are arranged, so that when the device is used, the sound pickup arranged on the sound insulation protective cover can be used for automatically monitoring sound generated in a water pressure test and then sending the sound to the human-computer interface touch screen, and the result of the water pressure test can be intuitively displayed after the result is calculated based on water sound analysis; and the sound insulation protective cover can effectively solve the interference of external environment noise on the sound pick-up, so that the test precision is improved.

This invention discloses an electric ball valve, a braking system, and a rail vehicle. The electric ball valve includes a ball valve unit and an actuator unit. The ball valve unit includes a valve body and a valve core disposed within the valve body. The valve body has a first valve port and a second valve port. The actuator unit includes a housing and a transmission assembly, at least one rotary energy storage assembly, and a control assembly disposed within the housing. The transmission assembly is connected to the valve core, and the control assembly is connected to the transmission assembly and is used to control the transmission assembly and the rotary energy storage assembly to drive the valve core to rotate and open, thereby connecting the first valve port and the second valve port. According to the electric ball valve provided by this invention, the control assembly controls the transmission assembly and the rotary energy storage assembly to drive the valve core to rotate and open to exhaust air via the transmission assembly, enabling rapid braking in response to exhaust air from the brake pipe.

The invention discloses a parking lot charging pile protection device, and relates to the technical field of charging piles, the parking lot charging pile protection device comprises a supporting table, and further comprises a stress structure, the stress structure comprises a stress belt, a winding roller, a rotating column and a rotating structure, and the winding roller and the rotating column are coaxially fixed; one end of the stress belt is rotationally installed on the table top of the supporting table through a rotating structure, and the other end of the stress belt is fixed to the roller face of the winding roller. Each damping assembly comprises a box body and a damping mechanism, a rotating hole is formed in one side of the box body, the rotating column is rotationally installed in the rotating hole, and the damping mechanisms are arranged in the box bodies and apply resistance to the rotating column; the shell is fixed to the bottom of the supporting table; and a jacking mechanism. Under the condition that the resistance is not enough, even if the automobile moves backwards excessively, the automobile cannot continue to retreat, and therefore the protection function is achieved.

The utility model discloses a liquid dye production container which comprises a barrel body, a cover plate and universal wheels, the cover plate is arranged on the barrel body in a covering mode, the universal wheels are arranged at the bottom of the barrel body, an installation strip is arranged on the side portion of the barrel body, an installation groove is formed in the installation strip, a handle is arranged in the installation groove, and the handle can be turned into the installation groove. A fixing block is arranged at the bottom of the barrel body, the fixing block is located on one side of the universal wheel, and when the handle enters the mounting groove, the fixing block abuts against the universal wheel to fix the universal wheel; the handle can be stored, and the universal wheels can be quickly braked.

The invention relates to a drive axle assembly structure of a wet brake system of a 5-12T forklift, and relates to the technical field of wet brake drive axles. Comprising an axle housing, a brake and a hub, and the brake adopts a wet brake to brake the hub; a brake gear ring is fixed to the side, close to the wet brake, of the hub and conducts friction braking through a friction pair in the wet brake, and then the hub is braked. And a rotating shaft lip-shaped sealing ring and a box type oil seal are arranged between the brake gear ring and the wet brake for double sealing. The wet brake is adopted, the installation sealing mode of the wet brake is designed, and the defects of a shoe type or caliper disc brake in the prior art in the aspects of sealing performance, stability, heat dissipation effect and anti-pollution capacity are overcome; and the structure and the material process of the transmission gear pair of the main speed reducer are optimized, so that the size and the weight are reduced while the strength is ensured.

The invention discloses an automobile brake system adapting to the treading strength of a brake pedal. Belongs to the technical field of automobile braking and comprises a current adjusting mechanism, an automobile conventional electro-hydraulic braking system, an automobile basic braking system and an oil energy recovery device. The defects of a traditional vacuum boosting system are overcome, the braking system is simple in structure and convenient to control, the current adjusting mechanism can efficiently control the opening degree of a valve port of the linear electromagnetic valve no matter an automobile braking pedal is in the braking implementation or braking release working condition, and real-time accurate adjustment of oil pressure in a braking pipeline is achieved; in the automobile braking process, the pressure of each wheel cylinder is independently adjusted in real time, the ground adhesive force is fully utilized, and the automobile braking effect and the braking safety and stability are improved; composite spiral springs are arranged in the front cavity and the rear cavity of the brake master cylinder, a brake pedal arm return spring is supplemented, a pedal stroke simulator in a conventional electro-hydraulic brake system can be replaced, the pedal foot feeling effect is more obvious, and driving safety is better facilitated.

The invention relates to the technical field of safety protection of industrial equipment, and particularly discloses an anti-falling device of a die-casting edge trimmer. The problem that a middle base of the edge casting and cutting machine falls off in the overhauling process is solved. Comprising a fixed base, an abutting plate, a push ring and a transmission connecting rod mechanism, the base comprises two semi-annular fixed shells which are detachably connected, and the two fixed shells can be jointly clamped and fixed to a guide column of the edge trimmer; an annular groove is formed in the top of the fixed shell, and the abutting plate is arranged in the annular groove in a sliding mode and can slide in the radial direction of the guide column; the push ring is arranged above the annular groove; the transmission connecting rod mechanism is arranged between the push ring and the abutting plate, and when the push ring is subjected to pressure of falling of the edge trimmer middle base, the transmission connecting rod mechanism drives the abutting plate to abut against and lock the guide column. According to the die-casting edge trimmer, the situation that the middle base falls in the overhauling process is reduced.