32results about How to "Effective braking" patented technology

The invention belongs to the technical field of brake pad materials, and aims to solve the problems that the friction coefficient of an existing organic-based brake pad is unstable, so that brake failure is likely to occur, the driving safety is affected, the operation cost is increased due to frequent replacement of the brake pad, and normal operation of rail transit is affected. Therefore, the invention provides the organic track brake pad material with the high friction coefficient and the preparation method thereof. The material comprises 20-30% of thermosetting phenolic resin, 8-15% of bismaleimide resin, 8-12% of polyimide resin, 6-10% of high-strength carbon fiber, 6-10% of aramid fiber, 4-8% of basalt fiber, 3-6% of graphite, 2-5% of molybdenum disulfide, 3-6% of copper fiber, 2-5% of silicon carbide particles, 3-6% of barium sulfate, 2-4% of aluminum oxide, 2-4% of talcum powder, 2.5-5% of a curing agent and 1.5-3.5% of other auxiliaries. The friction performance of the organic track brake pad material is improved under the condition that other performance of the organic track brake pad material is not reduced, the defect of the friction performance of an existing brake pad material is effectively overcome, and reliable guarantee is provided for high-performance safe operation of track traffic.

The application discloses a kind of electric fork truck with double brake switch brake system and its fault detection method, including brake pedal mechanism, brake switch one, brake switch two, VCU controller, instrument and brake signal lamp, brake switch one obtains the trigger point of brake pedal signal in brake pedal mechanism is set at brake pedal at initial position, brake switch two obtains the trigger point of brake pedal signal in brake pedal mechanism is set at preset position in brake pedal stroke And the signal trigger point position of brake switch one is different.The application is provided with two groups of brake switches, can ensure that when one brake switch is damaged, the vehicle realizes effective braking, ensures safety, and utilizes two brake switch trigger positions, judges the working state of two brake switches according to motor feedback brake deceleration rate signal, so that maintenance personnel can judge fault type and position, and carry out rapid repair.

The invention relates to a special brake wheel system for anti-skid of automobiles, which is characterized in that: a piston sleeve rotating shaft is fixed on a vehicle body and is located above and behind the rear wheel of the vehicle; a shaft sleeve is provided on the top of the piston sleeve and matched with the piston sleeve rotating shaft; three parallel holes are provided at the bottom as piston body cavities; the piston sleeve rotates around the piston sleeve rotating shaft; the piston body is connected with three parallel electromagnet columns at the bottom; a brake wheel bracket is matched with the brake wheel bracket rotating shaft, the piston body shaft and the brake wheel shaft; a pair of brake calipers are provided on the brake wheel bracket, and the brake caliper electromagnet coil is located in the brake wheel bracket crossbeam of the brake wheel bracket; when the vehicle brakes and the ABS is started, the brake wheel and the ground are in a sliding state, and the downward pressure is increased at the same time, and the small spikes on the brake wheel pierce into the ground ice, which can brake in time and effectively, and effectively prevent the ice surface from sliding and causing accidents.

The utility model relates to a drum brake of a bicycle, a wheel assembly and the bicycle. The drum brake has a braking state and a non-braking state and comprises a drum brake disc arranged on a wheel of the bicycle and provided with a first side and a second side which are opposite to each other; the brake rocker arm is rotatably arranged on the first side of the drum brake disc and faces upwards; the leading shoe is rotatably arranged on the second side of the drum brake disc; the slave shoe is rotatably arranged on the second side of the drum brake disc; the cam is arranged on the second side of the drum brake disc and connected with the brake rocker arm, the cam comprises a first matching surface and a second matching surface which are deviated from each other, in a non-brake state, the first matching surface is in contact with the leading shoe, the second matching surface is in contact with the trailing shoe, and a first distance is formed between the first matching surface and a rotating shaft of the cam; and a second distance is formed between the second matching surface and the rotating shaft of the cam, and the first distance is greater than the second distance, so that the leading shoe is contacted with a lining on a wheel earlier than the trailing shoe in a braking state.

The invention relates to the technical field of tower crane obstacle avoidance, and particularly discloses a tower crane automatic obstacle avoidance system which comprises a positioning module, an obstacle monitoring module, a PLC control module, an electric control and brake module and a feedback module. The positioning module monitors the movement track and angle change of the tower crane boom in real time; the obstacle monitoring module monitors the surrounding environment of the tower crane in real time through a laser radar and an ultrasonic sensor; the PLC control module is used for receiving real-time data and analyzing the current position, angle and surrounding environment of the tower crane; the electric control and brake module is used for monitoring real-time data from the positioning module and the obstacle monitoring module and rapidly cutting off the power of the rotary motor when the tower crane enters a dangerous area; and the feedback module allows an operator to carry out manual intervention in an emergency through a foot switch function. According to the invention, potential safety hazards caused by human errors are reduced, and the safety of the tower crane in operation in a complex environment is ensured.

The utility model discloses an anti-galloping device for an overhead man-riding device, aims to solve the problem that a rope clip cannot be clamped and fixed in time when the overhead man-riding device breaks down, and belongs to the technical field of overhead man-riding devices. The lower ends of a pair of passenger spacing hanging brackets are connected with riding wheel hanging brackets, passenger spacing riding wheels are rotationally installed below the pair of riding wheel hanging brackets, steel wire ropes are erected on the upper sides of the passenger spacing riding wheels, and an overspeed sensor riding wheel is rotationally installed on one side of one riding wheel hanging bracket through a sensor installation frame. The overspeed sensor riding wheel is erected on the upper side of the steel wire rope, a rotating speed sensor is installed on the sensor installation frame, the other riding wheel hanging bracket is connected with an anti-galloping band-type brake device in a sliding mode, a buffering device is installed between the other riding wheel hanging bracket and the anti-galloping band-type brake device, and a signal line of the rotating speed sensor and a power line of the anti-galloping band-type brake device are jointly connected with a mining flameproof and intrinsic safety type controller. And the mining flame-proof and intrinsic safety type controller is connected with a comprehensive protection device through a signal line.

The invention discloses an active safety elevator with a traction main machine monitoring system, which belongs to the technical field of elevators. The elevator comprises a shaft and a machine room at the top of the shaft, wherein a car and a counterweight are arranged in the shaft, and a traction main machine, a guide wheel, a first end rope head plate and a terminal rope head plate are arranged in the machine room. A braking mechanism is arranged in the traction main machine, and an elastic reset mechanism and an electromagnetic control structure are arranged in the braking mechanism, so that the action of the braking mechanism can be implemented by the elastic force of the elastic reset mechanism. At this time, the elastic reset mechanism is mainly used to apply elastic force to the brake block, so that the brake block contacts with the brake ring to generate friction, and no energy is consumed for braking. At the same time, a repulsive force can be generated by energizing the first electromagnet and the second electromagnet, so that the brake block is affected by the combined action of the elastic force and the electromagnetic force, and the friction between the brake block and the brake ring is greater, so as to achieve the effect of efficient braking. The elevator has two braking modes, so as to ensure the braking stability of the traction main machine.

The utility model provides a kind of wheel hub motor electric brake and electromagnetic brake assembly, including first shell and second shell, first shell is installed below wheel hub motor, second shell is installed below first shell;Wheel hub motor one end is clamped in first shell, wheel hub motor below is provided with clamping block and first brake disc, clamping block below is provided with fixed block, fixed groove is set up on first brake disc, fixed block is clamped in fixed groove, first brake disc below is equipped with pressure plate;Second shell is clamped in support sleeve, support sleeve below is provided with fan blade, top is provided with brake assembly, rotation block and connecting block are provided in support sleeve.The component is through brake assembly, realizes the brake operation to wheel hub motor, improves brake effect, makes vehicle travel safer;Through fan blade, can accelerate heat dissipation, reduce brake assembly heat accumulation, so that component performance is more stable.

The utility model discloses a restraining device for an interventional operation, which comprises a mattress body, a restraint device and a fixing device. A plurality of positioning holes are formed in two sides of the trunk part; the restraining rail comprises a rail body, the rail body is arranged on the trunk part in a sleeving mode, and the rail body extends in the length direction of the trunk part; the track body is provided with a through hole for the trunk part to pass through, the top wall of the through hole extends upwards to form a bearing part, and the bottom wall of the through hole extends downwards to form a clamping part for clamping an operating bed; and the binding belts are slidably connected to the bearing part through sliding connecting pieces, the number of the binding belts is multiple, and the binding belts correspond to the multiple positioning holes. The utility model has the advantages of simple structure and reasonable design. A patient can be kept on the interventional operation bed in a stable braking state, the operation efficiency is improved, and the operation risk is reduced. The restraining device for the interventional operation can also be used for transferring a patient after an operation.

The utility model relates to the technical field of railway transportation equipment and safety, and particularly discloses an external brake device of a track inspection tester, which comprises a supporting mechanism, the supporting mechanism comprises a supporting assembly, and a clamping assembly, a braking assembly and a driving assembly are installed on the supporting assembly. The supporting assembly and the clamping assembly are combined and fixed to a train track inspection vehicle, and the driving assembly is rotationally clamped and embedded in the supporting assembly and drives the brake assembly to abut against a train track. The torsion spring drives the connecting shaft rod to rotate, so that the brake pad is far away from a train track, and normal running of a train is guaranteed; when braking is needed, an operator only needs to rotate the handle, the first push block can be pushed to move through the second push block, then the brake pad abuts against a train track, and rapid and effective braking is achieved. In addition, a first spring in the brake assembly can drive a first push block to be away from a second fixing plate after braking, so that a brake pad leaves a rail in time, and excessive abrasion is avoided.

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 a medical protection frame with four wheel positioning and brake function, including bottom plate, the top fixedly connected with four vertical pipes of bottom plate, the top of bottom plate is provided with fixed plate and top plate, the fixed plate and top plate all are set up on four vertical pipes and with its fixed connection, the bottom of bottom plate is inserted with four and its sliding connection's support rod, four the bottom of support rod all is installed with universal wheel, the fixed plate is inserted with four and its fixed connection's electric push rod no.

The utility model belongs to the technical field of walking aids, and particularly relates to a postoperative recovery walking aid which comprises a walking aid body and two front universal wheels, the bottom end of the walking aid body is fixedly connected with two U-shaped supporting frames, rear walking wheels are arranged in the two U-shaped supporting frames, the two sides of each rear walking wheel are fixedly connected with connecting shafts, and the connecting shafts are connected with the front universal wheels. The side walls of the two connecting shafts are both fixedly connected with rotating carrying discs, one ends of the two connecting shafts are both rotationally connected with fixing covers, and the inner wall of the groove is fixedly connected with a meshing ring. A meshing tooth block is limited through a meshing tooth ring, so that the meshing tooth block can drive a rotating carrying disc, a connecting shaft and a rear action wheel to conduct emergency braking, the situation that the device advances too fast, and consequently the legs of a patient are difficult to follow up is reduced, the situation that the patient falls down during exercise is reduced, and the traction force of an elastic pull rope on the meshing tooth block is adjusted, so that the patient can take exercise conveniently. And therefore, the device can be effectively braked at different speeds per hour.

The utility model provides a frozen meat cutting device. The frozen meat cutting device comprises a rack, a cutting assembly and an emergency stop assembly, the rack comprises a machine body and a machine head, the machine body is provided with a cutting table top, and the machine head is connected with the machine body and located above the cutting table top; the cutting assembly comprises a power element, a driving wheel, a driven wheel and a band saw, the power element is arranged in the machine body, the driving wheel is in transmission connection with the power element, the driven wheel is arranged in the machine head, and the band saw is connected with the driving wheel and the driven wheel; the emergency stop assembly comprises a detection assembly and a brake assembly, the detection assembly is installed on the machine head and faces the intersection of the cutting table top and the band saw, the detection assembly is connected with the power element and the brake assembly, the brake assembly is installed in the machine body and connected with the detection assembly, and the brake assembly comprises a brake rod; the brake rod is used for being inserted into the brake hole to brake the band saw when the detection assembly detects the signal. According to the emergency stop device, braking is faster and more effective during emergency stop, the safety can be improved, and fool-proof is effectively achieved.

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 vehicle braking system comprises a braking controller, a main cylinder, a braking pedal, a braking state detection module, a pedal feeling simulation module and a pressure supply module, the main cylinder comprises a main cylinder first cavity and a main cylinder second cavity which are arranged in series, and the pedal feeling simulation module is arranged in the main cylinder first cavity; the brake pedal is connected with a telescopic rod of a second cavity of the main cylinder, a piston of a first cavity of the main cylinder is provided with a channel for circulation of brake fluid, and the brake state detection module is used for generating first brake information based on the detected brake state of the brake pedal; the brake controller is used for sending a first brake instruction to the pressure supply module based on the first brake information; the pedal feeling simulation module is used for generating pedal simulation information based on the brake state and sending the pedal simulation information to the brake pedal; the pedal simulation information enables the brake pedal to generate feedback force; the pressure supply module is used for building pressure for vehicle braking based on the first braking instruction. The hydraulic transmission device has the effects of high response speed, direct hydraulic transmission and the like.

This invention discloses a vehicle braking control method, apparatus, storage medium, processor, and electronic device. The method includes: acquiring target control state information corresponding to a target vehicle, wherein the target control state information represents the adaptive cruise control state and deceleration request information of the target vehicle; determining, based on the target control state information, that the target vehicle is in a target operating condition, and acquiring braking state information of the target vehicle, wherein the target operating condition is an adaptive cruise deceleration condition; and performing braking control on the target vehicle based on the braking state information. This invention solves the technical problem of low vehicle stability caused by vehicle braking control methods in related technologies.

The utility model relates to the technical field of solar energy production equipment, in particular to a transmission device for solar energy production equipment, which is provided with a driver and a corresponding lifting mechanism to effectively brake, avoid movement in a non-control state and improve stability. Comprising a solar energy production equipment frame, a driving shaft, a synchronous gear, a driving motor, a speed reducer, a driving gear, a connecting frame, a lifting motor, a threaded rod, a threaded pipe, a clamping plate, a sliding strip and a restraining sleeve, the top end of the solar energy production equipment frame is connected with the bottom end of the speed reducer, and the output end of the driving motor is connected with the input end of the speed reducer; the inner side of the upper portion of the solar energy production equipment frame is rotationally connected with a driving shaft, the output end of a lifting motor is connected with the bottom end of a threaded rod, the outer wall of the threaded rod is in threaded connection with the inner wall of a threaded pipe, and the top end of the threaded pipe is connected with the middle of the bottom end of a clamping plate. The left and right sides of the connecting frame are respectively connected with a group of constraint sleeves; the sliding strips are in sliding connection with the inner sides of the constraint sleeves on the same side.

The utility model discloses a laser slitting device for film label printing, and relates to the technical field of slitting devices. The laser slitting device for film label printing comprises a conveying assembly, rotating shafts rotationally arranged on the inner walls of the two sides of a fixing frame and rotating rollers fixedly arranged on the outer surfaces of the rotating shafts. And the slitting assembly comprises sliding rods fixedly arranged on the inner walls of the two sides of the fixing frame and a plurality of sliding plates arranged on the outer surfaces of the sliding rods in a sliding mode, and laser cutting heads are arranged on the upper surfaces of the sliding plates. By means of the slitting assembly, when the slitting device is used for slitting a PET film, the purpose of accurately controlling the width of a cut strip-shaped film can be achieved, a plurality of strip-shaped target films can be cut at a time, practicability is high, and by arranging the positioning assembly, after the sliding plate is moved to the designated position, the positioning assembly can be used for positioning the strip-shaped target films. And effective braking of the sliding plate can be achieved, and therefore the stability of the laser cutting head in the cutting process is effectively guaranteed.

The invention discloses a hub speed reducer and a mine truck, and relates to the technical field of engineering machinery, the hub speed reducer comprises a brake mechanism, a first-stage planetary transmission mechanism and a second-stage planetary transmission mechanism which are in transmission connection in sequence, and the first-stage planetary transmission mechanism and the second-stage planetary transmission mechanism are arranged on the two sides of a truck body structure; the second-stage planetary transmission mechanism is connected with the hub; the braking mechanism is used for generating braking, and the braking is transmitted to the hub through the first-stage planetary transmission mechanism and the second-stage planetary transmission mechanism in sequence, so that braking of the hub is achieved. According to the invention, a huge braking force can be generated on the hub through a smaller braking torque and a torque increasing effect of gear transmission.

The elevator multiple emergency braking structure comprises a base and a machine frame, hydraulic drivers are fixedly connected to the left side face and the right side face of the machine frame, two limiting sliding grooves are formed in the inner wall of the machine frame, two limiting sliding blocks are connected to the inner wall of each limiting sliding groove in a sliding mode, and the limiting sliding blocks are connected to the left side face and the right side face of the machine frame in a sliding mode. The front face of each limiting sliding block is fixedly connected with a brake mounting base. According to the device, the two brake mounting seats are driven by the hydraulic driver and matched with the limiting sliding grooves and the limiting sliding blocks, so that the two brake discs drive the brake non-slip mats to make contact with the elevator lifting control wheel, it can be ensured that enough friction force is generated between the brake discs and the elevator lifting control wheel in the braking process, and therefore rapid and effective braking of an elevator is achieved; when a fault occurs, an alarm can be given to security and protection management personnel through the communication module and the communication adapter, so that the time from fault occurrence to response obtaining is greatly shortened, and the security and protection management personnel can take countermeasures as soon as possible.

The invention discloses a vital communication line high-density polyethylene pipe laying system and method, and the method comprises the following steps: S1, conveying a high-density polyethylene pipe and a pipeline unreeling frame to a construction site, detaching a strapping tape on the polyethylene pipe, and finding the end of the polyethylene pipe; s2, an operation site is arranged, the unwinding frames are kept at proper intervals, and it is ensured that the polyethylene pipe is discharged from a disc and enters a ditch; s3, the end of the polyethylene pipe is connected with pipe guiding equipment, and the movement track and speed are controlled through cooperation of a remote controller and micro-control directional drilling equipment, so that the pipe guiding equipment runs from one end of the basic pipeline to the other end of the basic pipeline or a designated position; and S4, comprehensive quality inspection is conducted after construction is completed. The pipes are discharged and dragged from the side face of the shaft disc, so that the preparatory work that the pipes are pulled out of the discharging pipe disc and then unfolded is reduced, and possible secondary pipe carrying is reduced.

The embodiment of the invention discloses a braking method and device for a drive-by-wire chassis of an unmanned vehicle, electronic equipment and a storage medium, and relates to the technical field of automatic driving. The method comprises the following steps: receiving a target remote control message sent by mobile equipment through a drive-by-wire chassis controller, determining a remote control instruction matched with the target remote control message, and starting timing; when timing reaches a first set time threshold value, if a next target remote control message sent by the mobile equipment is not received, controlling a drive-by-wire chassis of the unmanned vehicle to enter a braking mode, and sending a braking instruction message to the mobile equipment; and in response to a continuous receiving instruction of the first remote control message and the second remote control message, releasing the braking mode, and continuing to execute the operation of receiving the target remote control message sent by the mobile device. According to the scheme of the embodiment of the invention, the problem that the drive-by-wire chassis of the unmanned vehicle cannot receive the instruction sent by the mobile equipment in time in the scene that emergency braking is needed is solved, and the safety risk is reduced.

The invention discloses an onboard electric hydraulic braking system and method. The normal electric brake driver is connected with a piston A of the hydraulic brake driver, the piston A divides the hydraulic brake driver into an air cavity A and a hydraulic oil cavity A, the hydraulic oil cavity A is connected with the differential brake actuator, and the differential brake actuator is connected with the left brake actuator and the right brake actuator. Pistons F and pistons G of the left brake actuator and the right brake actuator are correspondingly connected with the movable brake pads A and B; the left brake actuator is divided into a hydraulic oil cavity E and an air cavity E through a piston F, and the right brake actuator is divided into a hydraulic oil cavity F and an air cavity F through a piston G; the interior of the differential brake actuator is divided into a left cavity and a right cavity through a piston D; the left cavity is divided into an air cavity C and a hydraulic oil cavity C through a piston C, and the right cavity is divided into an air cavity D and a hydraulic oil cavity D through a piston E; the air cavity C and the air cavity D are close to a piston D, and the piston D is driven by a differential brake electric actuator; the hydraulic oil cavity A is respectively communicated with the hydraulic oil cavities C and D; and the hydraulic oil cavities C and D are respectively communicated with the hydraulic oil cavities E and F. The device has the characteristics of simple structure, high reliability and high safety.

The utility model relates to punch press technical field discloses a brake structure of punch press, include: the upper portion of fuselage is equipped with crankshaft, and the upper portion of fuselage is equipped with the installation guide pillar, flywheel is through bearing cover and is equipped on the crankshaft, and the clutch disc is set up in the right side of flywheel, and the clutch disc has hollow installation shaft, and the disc body is installed on flywheel through fastener, and the disc body and the right side end surface of clutch disc are in abutment, and the piston is covered and is equipped on the installation shaft, and the circumference edge of piston is equipped with the off brake pad, and the off brake pad and the clutch disc between are equipped with elastic part, and the brake disc is covered and is equipped on the crank, and the lug connected with the installation guide pillar is equipped on the brake disc. The utility model reduces the component quantity for fixing the brake disc, reduces the installation cost and production cost, and simultaneously, the symmetrical installation guide pillar improves the stability of braking process and realizes the uniform stress of mechanical parts.

The utility model discloses a controllable parking device with a wear-resistant patch, which is mainly used at the tail part of a railway marshalling yard. The controllable parking device with the wear-resistant paste comprises a parking device body, a rail bearing plate is fixedly connected to the upper surface of the parking device body, a braking rail is arranged on the upper surface of the rail bearing plate in an attached mode, a strip-shaped hole is formed in the braking rail, a fixing bolt is arranged on the inner wall of the strip-shaped hole in an attached mode, and a first threaded hole is formed in the rail bearing plate. According to the controllable parking device disclosed by the utility model, through the matching of the stop block, the U-shaped wear-resistant paste, the trapezoidal groove, the trapezoidal cushion block, the second threaded hole, the double-thread screw rod, the bearing, the connecting plate and the rotating block, a user can adjust the position of the brake rail on the controllable parking device according to the wear degree of the brake rail and the fatigue degree of a brake spring on the parking device main body; and the abraded brake rail can still effectively brake the wheels, so that the service life of the brake rail of the controllable parking device is effectively prolonged.

The invention relates to a braking control method for a vehicle, and the method comprises the steps: receiving a first signal from an automatic driving system, and enabling the first signal to indicate that the automatic driving system requests to stop the vehicle; determining a stop expectation of the vehicle based on the first signal and an actual speed of the vehicle; and when it is determined that the stop is expected to be 'true', calculating an anti-back-slip braking force Fxroll during the period of receiving the first signal, the anti-back-slip braking force Fxroll being determined at least according to a propulsive force Fxprop of the vehicle, an actual braking force Fxbrakeact of the vehicle and a gradient, so that the vehicle can be completely braked on different ramps. The application also relates to a computer program product and a domain controller.

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 relates to the technical field of restraint clothes covers, in particular to a child oral examination restraint clothes cover which comprises a supporting plate used for supporting the back of a child. The wearing assembly comprises a semi-cylindrical strait-jacket fixedly arranged on the front surface of the supporting plate; and the restraining assembly comprises three groups of fixing belts which are arranged on the surface of the semi-cylindrical restraining clothes at equal intervals and a fixing frame which is fixedly arranged on the back surface of the supporting plate. By means of the wearing assembly and the restraining assembly, in the actual use process of the child strait-jacket, rolling of the two fixing belts can be achieved by rotating a rotating disc, and therefore the fixing belts can tighten the semi-cylindrical strait-jacket, the semi-cylindrical strait-jacket can effectively fix the body of a child to the supporting plate, and the child can be more conveniently and rapidly strained. And only one head of the child is exposed to the outside, and the arms of the child are positioned inside the semi-cylindrical strait-jacket, so that the arms and the upper body of the child can be effectively fixed, and normal examination is ensured.

The invention relates to the technical field of electric braking systems, and discloses a trailer retarder with an auxiliary driving function, the trailer retarder comprises a retarder shell, a transmission shaft and a retarder rotor set, the retarder rotor set comprises a first rotor, a magnetic shield and a second rotor, and a first permanent magnet and a second permanent magnet are attached to the outer side and the inner side of the retarder rotor set respectively; a first stator is arranged on the inner side of the retarder shell, a second stator is fixed to the retarder shell through bolts, the magnetic isolation sleeve is provided with protrusions and grooves, the protrusions of the magnetic isolation sleeve are embedded into the grooves of the first rotor, the protrusions of the second rotor are embedded into the grooves of the magnetic isolation sleeve, an inner stator is arranged outside the transmission shaft, and a stator winding is wound on the inner stator. In the starting or accelerating running process, alternating current is introduced into the stator winding, the auxiliary driving function can be achieved, the output torque of the transmission shaft is increased, and extra driving torque is provided for the trailer, so that the trailer can be started and accelerated more quickly and more stably, and the running performance is improved.