774results about How to "Achieve braking" patented technology

The invention belongs to the field of civil aviation logistics application, and particularly relates to a tilting pan type high-speed automatic baggage sorting machine capable of realizing high-speed automatic baggage sorting; the tilting pan type high-speed automatic baggage sorting machine comprises a track, a carrying trolley, an electric tipping device and a tray, wherein the carrying trolley is arranged on the track; the electric tipping device is arranged on the carrying trolley; and the tray is arranged on the electric tipping device. The tilting pan type high-speed automatic baggage sorting machine has the advantages that the machine has the sorting efficiency of 5000-10000 bags per hour according to the different airport scales, and the machine has the sorting way of pouring the bags into a slide way by turning over the tray, so that the bags are hardly damaged. Compared with the prior art, the tilting pan type high-speed automatic baggage sorting machine has the characteristics of being high in reliability and sorting efficiency, less in damage to baggage, and the like; and after being slightly improved, the tilting pan type high-speed automatic baggage sorting machine can be also used for the fields such as postal service sorting, tobacco sorting, aviation logistics and the like, thus having wider application scope.

The invention provides an electromechanical brake system based on an automobile bus. The electromechanical brake system based on the automobile bus comprises a brake signal input unit, a central control unit, a plurality of electric brake execution control units and a plurality of electric brakes, wherein the brake signal input unit is used for receiving brake signals and outputting the brake signals to the central control unit in real time; the central control unit is used for outputting multiple paths of brake motor target current signals to corresponding electric brake execution control units in real time according to the received brake signals; the electric brake execution control units are used for respectively driving and controlling corresponding electric brakes in real time according to the received brake motor target current signals; and the electric brakes are used for braking corresponding wheels. Correspondingly, the invention additionally provides an automobile with the brake system. The electromechanical brake system provided by the invention has the advantages of simple structure, small size, convenience in installation, low cost, quick brake response, good stability when used for braking , no pollution and the like.

The invention provides an electrically-driven speed change device for vehicles. The electrically-driven speed change device comprises a motor and a transmission mechanism, wherein the transmission mechanism comprises an input shaft, a speed change mechanism, an intermediate shaft, a retarding mechanism and an output shaft; the motor comprises a stator and a rotor; the rotor is connected with the input shaft; the input shaft is connected to the intermediate shaft by the speed change mechanism; the intermediate shaft is connected to the output shaft by the reducing mechanism; the speed change mechanism comprises a parallel shaft gear set and a synchronizer, and realizes gear shifting by the synchronizer. By the electrically-driven speed change device for the vehicles, a clutch is saved, namely the gear shifting can be realized conveniently by the synchronizer, and two-gear transmission and multi-gear transmission are easy to realize; and reverse gear can be realized conveniently by controlling the motor appropriately, so an idle pulley for realizing transmission reversing in common vehicles is saved, the cost is saved effectively, and a structure is simplified.

The invention provides a hydraulic control system. The system comprises a load sensitive variable pump, a shuttle valve, a braking system and a radiating system integrated with the braking system, wherein the load sensitive variable pump is respectively connected with the braking system and the radiating system; the braking system and the radiating system are connected with the shuttle valve; and the shuttle valve is connected with a load sensitive control oil port of the load sensitive variable pump. The hydraulic control system comprises the braking system and the radiating system integrated with the braking system, so that an engineering machine can be radiated and braked simultaneously; and compared with the conventional independent braking system and radiating system, the two integrated systems have the advantages of compact structure layout and the like.

The present invention relates to preventing, warning and intelligent controlling technology of automobile end collision and is used in preventing automobile end collision accident. The intelligent control system adopts integral detecting, analysis, processing and control structure mode, and includes signal acquisition part comprising Doppler ranging radar, vehicle speed and braking sensor; central system processor part; display and alarm part; and control and executing part comprising engine fuel supplying and braking unit. The central system processor unit has integrated signal modulation, input buffering, sampling and holding and many other functions, and is provided with conversion switch for changing between the 'overtaking mode' and 'city area running mode'. The present invention may be installed in various kinds of automobile without altering influencing the outer appearance and electric lines of the automobile.

The invention belongs to the technical field of braking devices, and particularly relates to a braking device for a gauge-changeable bogie. The braking device comprises a braking lifting seat and a braking clamp mounting seat, the braking lifting seat comprises a sliding joint, the braking clamp mounting seat comprises a sliding connector, and the sliding joint and the sliding connector form an axial sliding pair. The invention aims to provide a braking device for the gauge-changeable bogie to solve the problem that the gauge-changeable bogie cannot adopt a wheel disc braking mode, and the braking device can move along with a wheel disc braking disc on a wheel, so that wheel disc braking of the gauge-changeable bogie is achieved. Railway transportation of a 'silk road economic belt' is implemented, the problem of non-uniform railway gauges needs to be solved, and axial adjustment of a shaft disc braking device of the gauge-changeable bogie is an important link, so that design of a shaft disc braking mode of changeable rail gauges has quite important and profound significance.

Provided is a permanent magnet electromagnetic composite disc type eddy current braking device. The device comprises two magnet discs, a metal disc, and a transmission shaft, the two magnet discs are fixed on static equipment in parallel, the metal disc is fixed on the transmission shaft and arranged between the two magnet discs in parallel, the metal disc and the two magnet discs are also coaxially installed, the transmission shaft is supported on the two magnet discs via bearings, each magnet disc is provided with m composite magnetic poles formed by permanent magnets and electromagnets along the circumference (m is an even number), the m composite magnetic poles on the two magnet discs are opposite in pairs in the axis direction, and the magnetic field at the position of the metal disc between the two magnet discs is changed via the adjustment of the current and direction of electromagnet coils. When the metal disc and the magnet discs generate relative movement, eddy current is generated in the metal disc, interaction is generated, and rapid braking between the metal disc and the transmission shaft and moving bodies connected with the metal disc is realized. The braking device is applicable to rapid braking of high-speed moving bodies.

The invention relates to equipment for automatically and accurately repairing wavy abrasions to a subway corner rail. The equipment comprises a trolley, a driving assembly and a control assembly, wherein the trolley travels on the subway corner rail; a positioning assembly for fixing the trolley on the rail, a laser distance measuring sensor (10) for detecting the wavy abrasions to the subway corner rail and a grinding assembly (8) for repairing the wavy abrasions to the subway corner rail are arranged on the trolley; the driving assembly drives the grinding assembly (8) to move in an X-axis direction, a Y-axis direction and a Z-axis direction respectively. Compared with the prior art, the equipment takes a storage battery as power, can accurately repair the wavy abrasions to the subway corner rail for a designated position and can perform reshaping simply and repeatedly; the grinding assembly can move in the rail direction and in the radial direction of the rail and can rise and fall accurately, and an included angle formed by a grinding wheel and the rail can be adjusted. The equipment has the advantages of simplicity in operation, high working efficiency, convenience in mounting and transportation, low operation cost, high grinding accuracy and the like.

The invention relates to a planet carrier and a processing technology. The planet carrier body comprises two planet carried members which are separate individuals. The two planet carrier members form the planet carrier body through connection and are detachable connected; since the two planet carrier members are fixedly connected through bolts, the two planet carrier members are convenient for disassembly and assembly, and can be respectively processed and then be connected through the bolts, one of the planet carrier members can be fixedly connected with gears, the other planer carrier member is provided with a sleeve supporting part on which transmission parts such as gears are arranged so as to lead the planet carrier to achieve more driving functions; and one of the planet carrier members is provided with ratchet gear teeth which can be matched with other parts to achieve the brake of the planer carrier. The invention has the advantages of easy process, high processing precision and simple processing technology.

The invention aims to provide an electronic parking brake system which can be controlled simply and reliably and has a control method of an assistant hill starting function. The electronic parking brake system comprises a control unit and a brake motor which is controlled by the control unit and the signal input end of the control unit is connected with a throttle opening sensor, a clutch sensor, an engine rotating speed sensor, a current sensor of the brake motor, a hand brake switch and a hill start switch; the brake motor drives a turbine worm to rotate through a driving mechanism; the turbine worm is sleeved with a screw rod, and the end part of the screw rod is fixed with a friction plate. The electronic parking brake system has the advantages of greatly reducing the operational difficulty of a driver and improving the driving and operating comfort and convenience, along with low cost, simple structure, reliable control method, basic function of the traditional hand brake and assistant hill start function.

The invention discloses a suspension type elevator anti-falling device. The suspension type elevator anti-falling device comprises control devices and anti-falling mechanisms, all of which are arranged at the top of an elevator car. The two control devices and the two anti-falling mechanisms are arranged in a one-to-one correspondence mode. The control devices comprise weight loss switches and executing mechanisms. The weight loss switches control the anti-falling mechanisms through the executing mechanisms, so that hooks of the anti-falling mechanisms are hooked on stoppers to achieve the anti-falling function of the elevator car. A mechanical detection control device mode is adopted, the weight loss switches on the elevator car are turned on and off according to the weight loss state generated by over-speed descent of the elevator car, braking of the anti-falling device is achieved, the anti-falling device is high in detection speed and reliable in fault detection, the working performance of the anti-falling device can be remarkably improved, the anti-falling device can be automatically started and stopped, the anti-falling automation degree is high, and the anti-falling performance of the elevator is reliable.

The embodiment of the invention provides a vehicle control method and control device and a vehicle. The control method includes the steps that the vehicle control device obtains the current opening degree value of a pedal of the vehicle; the control device determines the section where the pedal is located according to the current opening degree value and the opening degree threshold value of the pedal, specifically, the pedal can be located in the braking section or the driving section, the braking section is used for controlling the vehicle to brake, the driving section is used for controlling driving of the vehicle, the opening degree threshold value is determined by the number input by a driver or determined in a self-learning way on the basis of the driving habit of the driver; and the control device controls the vehicle to brake when determining that the pedal is located in the braking section, or the control device controls driving of the vehicle when determining that the pedal is located in the driving section. According to the vehicle control method and control device and the vehicle, control over driving and braking of the vehicle is achieved with one pedal, and control complexity of the vehicle is reduced.

The invention relates to the technical field of agricultural machines, in particular to a wet clutch power output device and a tractor. The wet clutch power output device comprises a clutch hub, a middle hub, a first piston, a pressing disc, a clutch assembly and a brake assembly; hydraulic oil enters a piston cavity through an oil inlet hole, the first piston is pushed to extrude the clutch assembly, a clutch is engaged, a power input shaft drives the clutch hub to jointly rotate synchronously through the clutch assembly, and when the hydraulic oil is drained, the first piston is reset, at the moment, the first piston does not extrude the clutch assembly, and the clutch is disengaged; when the clutch is disengaged, the hydraulic oil pushes the second piston to extrude the brake assembly, the clutch hub is braked, brake of the power output system can be achieved, the phenomenon that after the clutch is disengaged, the power output shaft continuously rotates under the inertia effect is avoided, accident risks are reduced, and safety is improved.

The invention discloses a micro-motion function and hydraulic brake control system of a wheeled dozer, and belongs to the field of wheeled dozers. The micro-motion function and hydraulic brake control system comprises an oil tank, an oil suction filter, a gear pump, a high-pressure filter, a prefilling valve, a micro-motion oil cylinder, a left pedal valve, a pressure switch, a brake valve set, a right pedal valve, a shuttle valve set, a rear axle brake, a front axle brake and a parking brake. Through the left pedal valve (micro-motion function pedal valve), a driver can effectively control tire drive force by combining the condition that the tire drive force ranges from 0 percent to 100 percent, wheel slipping is avoided, tire abrasion is reduced, and therefore engine power can be effectively utilized, oil consumption can be reduced, and circulating speed can be improved. According to the micro-motion function, the tire drive force is effectively controlled, meanwhile, emergency braking can be achieved through a service brake, and the reliability and running safety of a brake system are obviously increased. Main elements of the control system are integrated on the brake valve set, pipe connection is simplified greatly, and pipe arrangement is more reasonable.

The invention discloses a wheeled crane and a hydraulic oil cooling system and control method thereof. The disclosed cooling system comprises a radiator, a power part driving the radiator, a detection part, a control part and an execution part, wherein the detection part is used for detecting the temperature of hydraulic oil; the control part receives a temperature signal of the hydraulic oil, compares the temperature with the preset temperature, and generates a control signal according to the comparison information; and the execution part controls the power part to work or stop according to the control signal. By the coordinated operation of the detection part, the control part and the execution part, the radiator can be automatically started or stopped, so as to enable the temperature of the hydraulic oil to be always maintained in the preset temperature range, reduce the possibility of super high temperature, simultaneously prolong the service life of the hydraulic elements of the system and give play to the optimum heat dissipation function of the cooling system. At the same time, the start or stop of the radiator can be automatically controlled, thus the work of operators can be reduced, the dependence of the system safety on the manual operation can be reduced and the safe reliability of the system can be improved.

The invention discloses an elevator anti-falling device. The elevator anti-falling device comprises an anti-falling part and a control device. The control device comprises an actuator assembly installed on an elevator car and a centrifugal jaw clutch installed on the actuator assembly, a driven gear of the centrifugal jaw clutch is connected with an execution connecting rod assembly, and the execution connecting rod assembly is connected with the anti-falling part. A steel wire rope is wound on the actuator assembly, and the two ends of the steel wire rope are connected with the top and the bottom of an elevator shaft. The mode of mechanical detection control devices is adopted in the elevator anti-falling device of the structure, the falling speed of an elevator is detected by using the rotation speed of the centrifugal jaw clutch installed on the car, braking of the anti-falling device is realized, the anti-falling device is accurate in detection speed and has a few detection faults, the working performance of the anti-falling device can be obviously improved and the safety of operation of the elevator is improved.

In a two-stroke opposed-piston engine, a ported cylinder with a pair of opposed pistons is equipped with a decompression port including a valve and a passage with an opening through the cylinder wall that is located between the cylinder's intake and exhaust ports. The decompression port enables the release of compressed air from the cylinder after the intake and exhaust ports are closed. The valve controls airflow through the passage, and is opened to permit compressed air to be released from the cylinder through the passage, and closed to retain compressed air in the cylinder. Engine braking is supported by release of compressed air through the decompression port into an exhaust channel when the pistons are at or near top dead center positions as the cycle transitions from the intake / compression stroke to the power / exhaust stroke. Compression release from the cylinder via the decompression port after intake and exhaust, port closure can also support other engine operations.

The invention discloses a multi-power distribution mode mechanical and hydraulic composite transmission device. The multi-power distribution mode mechanical and hydraulic composite transmission devicecomprises an input shaft, a flow dividing mechanism, a mechanical transmission assembly, a hydraulic transmission assembly and an output shaft; the input shaft is connected with the mechanical transmission assembly and the hydraulic transmission assembly which are connected with each other in parallel through the flow dividing mechanism; the mechanical transmission assembly and the hydraulic transmission assembly are connected with the output shaft simultaneously; and three types of transmission such as pure hydraulic transmission, mechanical and hydraulic composite transmission and pure mechanical transmission are realized through combined switching among gear-shifting components. The multi-power distribution mode mechanical and hydraulic composite transmission device has the following beneficial effects: multiple gears are optional, multiple power distribution modes can be provided according to complicated operation working conditions, and the transmission property of the mechanicaltransmission and the stepless speed-regulating property of the hydraulic transmission can be completely utilized, so that the operation efficiency, the power property and the economical property of vehicles are improved. A mechanical gear shifting device can realize engine braking by a one-way clutch, and the service life can be prolonged by uniformly using each gear-shifting component.

To provide adjustable braking equipment capable of delaying or holding according to the operating state of an elevator installation and responding in a quick and gentle mode, and to provide a method for braking and holding an elevator cage. The elevator installation is provided with the elevator cage vertically moving within guide tracks 9. The braking equipment 13 comprises at least two brake units 14. Each brake unit is provided with a normal force regulator 16 setting a normal force FNcorresponding to a normal force value determined by a brake control unit 15, and / or the brake unit comprises a locking device which locks the brake unit into a set braking position and preferably maintains the set braking position. This solution permits a gentle braking or holding of the elevator cage in low energy requirement.

The invention relates to an electromagnetic controllable mechanical brake parking device which comprises action arms, an action arm installation seat, cylindrical compression springs, electromagnetic iron components and abrasion pieces. Two action arms are respectively connected on an upper end and a lower end of the action arm installation seat in a rotation mode, the cylindrical compression springs are arranged between the two action arms, two ends of each cylindrical compression spring are connected with the action arms on the upper side and the lower side respectively, the electromagnetic iron components are arranged inside the cylindrical compression springs and connected with the action arms on the upper side and the lower side, and two abrasion pieces are respectively arranged at the other end of each action arm. Compared with the prior art, electricity amount of the electromagnetic iron components is controlled to control frictional force among the abrasion pieces and a steel rail so as to achieve braking or parking of a vehicle, the abrasion pieces are compressed on the steel rail, most thermal load is born by the steel rail, the position of the vehicle is continuously moved, heat generated by the braking is rapidly dissipated on the steel rail, and the electromagnetic controllable mechanical brake parking device is suitable for being used for continuously-implemented brake of the vehicle on long-distance downhill.

The invention relates to a swinging arm type electric lifting wire pay-off device. The device comprises a lower frame at bottom, wherein a transversely movable supporting plate is arranged in the lower frame, and an upper frame is arranged above the lower frame; the upper frame is a U-shaped structure composed of one transverse square tube and two vertical square tubes which are connected together, and the lower frame is provided with a pivot bracket; the upper end of the pivot bracket is hinged with the middle part of the upper frame, and an up-and-down rotating device for driving the end of the upper frame to lift is arranged between the transverse square tube of the upper frame and the lower frame; one vertical square tube of the upper frame is provided with a main shaft, the front end of the main shaft is provided with a fixed tip cone, the main shaft is connected with a wire pay-off tension device and provided with an electromagnetic brake, and the other vertical square tube of the upper frame is provided with a movable tip cone and a manual rotating disk for driving the movable tip cone to stretch at a corresponding position of the main shaft; a rotary drum is arranged over the upper frame, and the rotary drum is connected with the upper frame through a bracket. The swinging arm type electric lifting wire pay-off device is suitable for paying off the wire for a wire coil.

The invention belongs to the technical field of hybrid electric vehicles, and particularly relates to a hybrid electric vehicle using a super-capacitor accessory power system. The hybrid electric vehicle using the super-capacitor accessory power system adopts parallel-connection power assembly structural style. A power system is composed of a power source system, a motor and an engine. The power source system is composed of a super-capacitor die set and a power source control system. The super-capacitor die set is connected with the motor through a direct-current (DC) / alternating current (AC) module. The super-capacitor die set is composed of super capacitor monomers with the number of 100-200 in a series-connection mode. The power resource control system transmits signals through a controller area network (CAN) trunk. A control unit provides a hybrid power solution for a vehicle according to different collecting values of sensor and vehicle requirements.

The invention discloses an electric brake booster for an automobile. The electric brake booster comprises a shell and further comprises a jacking rod assembly and a pushing rod assembly which are mounted in the shell; the pushing rod assembly comprises a pushing rod, one end of the pushing rod is connected with a pedal, and the other end of the pushing rod and the jacking rod assembly have a decoupling gap; and the jacking rod assembly comprises a jacking rod, one end of the jacking rod is connected with a driving mechanism, and the other end of the jacking rod is connected with a main cylinder piston. When a driver steps on the pedal, the driving mechanism receives a signal to drive the jacking rod to push the main cylinder piston to achieve braking, meanwhile the pushing rod makes linearmotion under pushing of the pedal, and the pushing rod does not jack the jacking rod assembly because the pushing rod and the jacking rod assembly have the decoupling gap; and when an electric control system loses efficacy, the driving mechanism is not started, after the pedal drives the pushing rod to eliminate the decoupling gap, the pushing rod jacks the jacking rod assembly, the main cylinderpiston is pushed by the force generated by stepping of the driver on the pedal, and thus braking under the electric control failure situation is achieved.

The invention relates to the field of medical equipment, in particular to a multifunctional electric bed comprising a bed head, guard bars, an angle-adjustable bed faceplate and an underframe which are mutually matched. The guard bars include tail guard bars, middle guard bars and head guard bars, the underframe comprises a bottom cover and a steel underframe body, lifting uprights are symmetrically arranged at front and rear ends of the underframe, a first inclination component and a second inclination component which are used for adjusting inclination angle of an upper bed frame are arranged on the lifting uprights, and a first rotating component and a second rotating component are correspondingly arranged on the first inclination component and the second inclination component respectively; upright bottom supports, castors and brake pedals are symmetrically arranged at two ends of the steel underframe body, mounting positions of the upright button supports correspond to those of the lifting uprights, and the upright bottom supports are connected with the steel underframe body and the lifting uprights through fixing components. By the multifunctional electric bed, difficulties of patients in turning over, sitting up, lying on the side and relieving themselves are solved, and labor intensity and burden of nursing personnel are relieved.

The invention relates to a fault-tolerant control system which comprises a main MCU (Microprogrammed Control Unit), a slave MCU and a switching control device, wherein the main MCU is connected with the switching control device, the slave MCU is connected with the switching control device, and the switching control device is used for switching a power supply between the main MCU and the slave MCU when the main MCU has a fault. When the main MCU has a fault, the power supply is switched to the slave MCU, and the slave MCU is used for controlling a vehicle brake system, therefore, the fault-tolerant function of a linear control brake system is realized and the safety, and the reliability of vehicles are improved.

The invention discloses a brake cylinder of a hydraulic brake device of a railway vehicle. The brake cylinder comprises a shell component, a disk spring assembly, an indicator assembly, a piston assembly, a push rod assembly and an end cover assembly. The push rod assembly, the piston assembly, the disk spring assembly and the indicator assembly are sequentially installed in a cylindrical hole inside the shell component from front to back, wherein the cylindrical hole is provided with a step, and the axis of the push rod assembly, the axis of the piston assembly, the axis of the disk spring assembly, and the axis of the indicator assembly are the same as the main axis of the shell component. The end cover assembly is installed on the cylindrical step at the front end of the shell component, and the axis of the end cover assembly is the same as the main axis of the shell component. Brake clearances can be automatically compensated by multiple threads. Compared with an existing brake cylinder, the brake cylinder is simple in structure, convenient to machine and assemble, few in movable parts, and high in reliability, has the friction plate and brake disc abrasion monitoring function and the automatic compensation mechanism running real-time monitoring function, and can remotely monitor the working state of the brake cylinder in real time. Manual brake loosening and adjustment can be achieved on the scene through a manual mechanical brake loosening device, and operation is conveniently and quickly conducted.

The invention discloses a pressure-adjustable type steering wheel brake system. An outer layer of a steering wheel is coated with an integral pressure area cavity, a pressure sensor is arranged in the pressure area cavity and is fixedly arranged at the proper position of the steering wheel, and a pressure sensor is arranged in a pressure area, and is used for converting a pressure signal into an electric signal and transmitting the electric signal to a control module; the electric signal is processed by the control module to form a driving force signal, so as to control the force of a driving device; the driving device is connected with an original brake device of an automobile to complete braking. The pressure-adjustable type steering wheel brake system has the advantages that the influence to the brake effect by the pressing force on the pressure area cavity at any position of the steering wheel by both hands of a user can be adjusted and set according to different users, so that the personalized use experience is outstanding; the pressure cavity at the exterior of the steering wheel can perform certain function of a safety air bag, so that the striking injury to a driver by the steering wheel is reduced when an accident occurs.

The invention particularly relates to an emergency braking device for an elevator, and solves the existing problem of safety accidents caused by falling of the elevator under emergency circumstances. The emergency braking device for the elevator comprises braking blocks which are arranged on cylindrical guide rails in a penetrating manner, wherein braking friction plates are arranged in each braking block, the back parts of the braking friction plates are connected with pistons, and a speed sensor and an acceleration sensor are also arranged in each braking block; two rows of fixing plates are arranged on the outer side of the back of an elevator car, a conductive plate is arranged between the two rows of the fixing plates, multiple groups of permanent magnets with opposite polarities are arranged on the inner sides of the two rows of the fixing plates, and an induction coil is arranged in the conductive plate; a main controller is arranged at the top of the elevator car; a hydraulic pump is arranged at the bottom of the elevator car, and the hydraulic pump is connected to the pistons through a hydraulic pipeline; the main controller is connected to all the conductive plate, the hydraulic pump, the speed sensor and the acceleration sensor, and the conductive plate is also connected with the hydraulic pump. The emergency braking device disclosed by the invention has the advantages of simple structure, high safety and effectiveness, and on the premise that the normal operation of the elevator is not influenced, the situation that the elevator is braked under the emergency circumstances such as power failure and the like can be realized.

The invention relates to a chassis assembly structure with four wheels capable of conducting independent driving and independent steering and a control method. The chassis assembly structure comprisesa chassis and the four wheels of an electric vehicle. The inner side faces of hubs of the four wheels are each provided with an independent driving mechanism and an independent steering mechanism, and the four independent steering mechanisms are fixed to the four corners of the chassis correspondingly. Steering motor steering reducer assemblies of the independent steering mechanisms are fixed tothe chassis, and output shafts of steering reducers are connected with the axes of rotating discs. Lower control arms are connected with the steering motor steering reducer assemblies and steering knuckles, and the two ends of connecting rods are connected with the rotating discs and the steering knuckles through ball head screws correspondingly. Vertical columns sleeved with spring dampers are mounted on the steering knuckles, and the upper ends of the vertical columns are connected with a vehicle body of the electric vehicle. The four wheels of the electric vehicle are independently controlled by the independent driving mechanisms and the independent steering mechanisms which are mounted on the inner side faces of the hubs of the four wheels correspondingly. The vehicle driving modes arediversified, steering flexibility is good, and the handling stability and reliability of the vehicle are improved.

The invention discloses a cleaning device for grain processing. The device comprises a base plate, a plurality of universal wheels are arranged at the bottom of the base plate, braking mechanisms arearranged on the universal wheels, a water storage tank is arranged on the top of the base plate, the water storage tank is internally provided with a first filtering mechanism and a second filtering mechanism, the top of the water storage tank is provided with a screening box, a cleaning box, a delivering mechanism and a drying box, the top of the base plate is provided with a collecting box and aconnecting plate, the top of the screening box is provided with a feeding port, the screening box is internally and cooperatively provided with a first vibrating screening net and a second vibratingscreening net which are movably connected, a draught fan is arranged on one side of the outer wall of the screening box, a dust collecting chamber is formed in the outer wall of the screening box, a water storage plate is arranged on the top of the cleaning box, the bottom of the water storage plate is provided with a plurality of nozzles, a water delivery pipe is arranged on the top of the waterstorage tank, and a water pump is arranged on the water delivery pipe. The device is convenient and fast to use, screening can be conducted on grains before cleaning is conducted, drying can be conducted on the grains, and circulation water can be fully filtered to prevent secondary pollution caused by the circulation water on the grains.