101results about How to "Light steering" patented technology

The invention provides a steer-by-wire system and a stability control method thereof. The steer-by-wire system comprises a steering wheel module, a front wheel steering module and an ECU electronic control unit, wherein the ECU electronic control unit comprises a variable transmission ratio controller, a fuzzy self-adaptive PID controller and a full state feedback controller. The stability control method is as follows: the variable transmission ratio controller calculates an ideal transmission ratio at the moment according to a steering wheel rotation angle signal and a vehicle speed signal, to obtain an ideal front wheel rotation angle at the moment; the full state feedback controller of an automobile calculates a compensation rotation angle of front wheels according to a yaw rate signal and a lateral acceleration signal of the automobile, to realize the outer ring control of the steer-by-wire system; and finally the fuzzy self-adaptive PID controller is designed, to realize the inner ring control of the steer-by-wire system. The operating stability of the automobile is effectively improved through the coordinated control of inner and outer rings of the steer-by-wire system.

The invention belongs to the field of plant protection machinery and discloses a full-hydraulic multifunctional integrated machine for applying pesticide and fertilizer to farmland. The full-hydraulic multifunctional integrated machine for applying pesticide and fertilizer to farmland consists of a driving cab, an electric sliding block, an engine hydraulic power unit, a frame, a steering mechanism, a driving mechanism, a pitch-variable oil cylinder, a ground clearance regulating oil cylinder, a pesticide spraying and fertilizer applying system and a lifting system. The full-hydraulic multifunctional integrated machine is driven by hydraulic pressure; the whole machine is simplified in structure; the driving mechanism is high in reliability and stability; treading tracks of the front and rear tires are superposed, so that damage of the tires during operation and steering to crops is reduced; in addition, lightness, flexibility and accuracy in steering are realized. Meanwhile, the working efficiency of the full-hydraulic multifunctional integrated machine is high; the heights of the chassis, driving cab and pesticide spraying rod as well as the wheel track can be adjusted; the full-hydraulic multifunctional integrated machine is suitable for operation managements of field pesticide and fertilizer application under the national conditions of diversified plots of China.

The invention provides an electric power-assisted steering system of an electric vehicle. The electric power-assisted steering system comprises an electric power-assisted steering controller, a power-assisted electromotor, an electromagnetic clutch, a speed changer and a torque sensor which is arranged on an input shaft of a steering gear of the electric vehicle, wherein an input end of the speed changer is connected with a steering wheel of the electric vehicle by an input shaft; an output end of the speed changer is connected with a cardan joint by an output shaft; the cardan joint is also connected with a wheel gear which is meshed with a rack; the rack is connected with wheels of the electric vehicle; the power-assisted electromotor is connected with the electromagnetic clutch which is also connected with the speed changer; an output signal of the torque sensor, an output signal of a vehicle speed sensor of the electric vehicle and an output signal of a revolution speed transducer of a driving motor of the electric vehicle are respectively connected with an input end of the electric power-assisted steering controller; and an output end of the electric power-assisted steering controller is respectively connected with the power-assisted electromotor and the electromagnetic clutch.

The invention discloses an all-wheel drive walking mechanism of a biomimetic six-wheeled leg and aims to solve the problem that a plurality of sensors and complex control logic are adopted by the prior art. The all-wheel drive walking mechanism of the biomimetic six-wheeled leg comprises a front automobile frame, a back automobile frame, a middle freedom degree junction device, wheel legs and driving combination bodies. The wheel legs are a front left wheel leg, a middle left wheel leg, a back left wheel leg, a back right wheel leg, a middle right wheel leg and a front right wheel leg, and the driving combination bodies are a front left driving combination body, a middle left driving combination body, a back left driving combination body, a back right driving combination body, a middle right driving combination body and a front right driving combination body. The middle freedom degree junction device is installed on the middle position of a front base plate of the back automobile frame, the back end of the front automobile frame is connected with the front end of the back automobile frame in a rotating mode, and the front left driving combination body and the front right driving combination body are installed on the left position and the right position in front of the front automobile frame and are connected with the two front wheel legs, and the middle left driving combination body, the back left driving combination body, the back right driving combination body and the middle right driving combination body are installed on four corners of the back automobile frame and are connected with the other wheel legs.

The invention relates to a novel front axle steering knuckle assembly device. The front axle steering knuckle assembly device comprises a steering knuckle, a steering knuckle frame, a needle roller bearing structure and a steering knuckle thrust bearing, wherein the steering knuckle frame is connected to one end of the steering knuckle; a steering knuckle sleeve is connected to the other end of the steering knuckle; the needle roller bearing structure and the steering knuckle thrust bearing are arranged between the steering knuckle and the steering knuckle frame; and the steering knuckle is in rolling connection with the steering knuckle frame. According to the novel front axle steering knuckle assembly device disclosed by the invention, the installation problem of pneumatic braking components is solved, and a steering knuckle main pin and the steering knuckle frame of the newly designed steering knuckle assembly are connected through the needle roller bearing, and sliding lubricationof the steering part is changed into rolling lubrication so as to reduce the vehicle steering force, therefore the vehicle has the advantage of lightness for steering.

The invention belongs to the field of steering power-assisted equipment, and particularly relates to an electrically-driven hydraulic power-assisted steering system. The system comprises a hydraulic pump, a motor for controlling the hydraulic pump, and a reducer connected with the motor, and is characterized in that the system further comprises a lithium cell for controlling the motor, a storage battery supplying power for the lithium cell, and an electric control system, wherein the electric control system forms a first control circuit with the lithium cell, the motor and the hydraulic pump. The electrically-driven hydraulic power-assisted steering system can provide corresponding assisted power according to the power-assisted requirement of a vehicle, improve the vehicle steering controllability effectively and save the energy consumption.

Disclosed is a multifunctional trail-type potato combine harvester. The multifunctional trail-type potato combine harvester is characterized by comprising a harvesting machine frame [1], a digging shovel [4], a lifting conveyer belt [7], a separation machine frame [59], a stretchy connector [36], a vertical elevator [37], a three-item plug board sliding channel bucket [38], a sub machine box [46], an externally-hanging folding conveyer belt [39], a potato collection box [31], a diesel engine [23], a gear pump [24], a distributor [18], a hydraulic motor [33] and the like. The multifunctional trail-type potato combine harvester is used for harvesting potatoes, and meanwhile most stone impurities on the surface layer of farmland can be picked out; manual work is saved, mechanical operation is achieved, and the working efficiency is high; the function is complete. By means of the multifunctional trail-type potato combine harvester, the functions of digging, impurity separating, impurity collecting, potato classifying, bagging, side-output truck loading joint operation, placing and stacking and the like can be achieved at one time, and thus one harvester can achieve multiple purposes. When being not used for harvesting potatoes, the multifunctional trail-type potato combine harvester can be used for conducting the soil sanitation operation alone before spring sowing and after autumn harvest. Independent power output can be achieved. After entering the harvester, the potatoes can not make contact with a chain, and therefore the defects that the length of the chain is increased so that soil leakage can happen and the chain is forcibly vibrated by an eccentric gear so that potato skin can be damaged are overcome.

The invention belongs to the field of electric vehicle arranging, and provides an electric vehicle arranging structure which ingeniously solves the problems that battery arranging is hard, temperature is not even, the battery can easily catch a fire when being collided, the whole vehicle is not reasonable in arrangement, and cost is high. A battery pack (2) is arranged in a center channel (3) in the front-back longitudinal direction of a whole vehicle (1), movable joints (5) are arranged between battery pack bodies (4), and a gear switch (6), a hand brake (7), an emergency stop switch (8) and a balancing, temperature-controlling and liquid level display device of the battery pack (2) are arranged on the center channel (3). The two ends of the battery pack (2) are respectively provided with an electric control part (19), a direct-current convertor (20) and a mechanical buffer (21). The electric vehicle arranging structure is used for electric sightseeing vehicle, scooters, cars and the like, the whole vehicle is compact in arrangement, and a large space is saved; the axle load ratio can be easily adjusted; battery temperatures are consistent, and batteries are more safe when being collided; cost of the vehicle body and wiring harnesses is lowered; starting driving force is strong, and steering is flexible; electric energy can be saved when the vehicle passes through an uneven road face; the electric vehicle arranging structure is scientific, convenient to operate and more attractive.

The invention discloses an automobile spoiler with the adjustable height. The automobile spoiler comprises an automobile tail base and a spoiler body. A fixing base is arranged above the left portion of the automobile tail base and fixed to the automobile tail base. A hinge shaft is arranged on the fixing base. An automobile speed inductor is arranged in the automobile tail base. A line bank is arranged above the right portion of the automobile speed inductor. A cushion base is arranged above the right portion of the automobile tail base and fixed to the automobile tail base. A hydraulic stand column is arranged in the cushion base and fixed to the cushion base. The hydraulic stand column is provided with a hydraulic rod. The spoiler body is located above the automobile tail base. The left lower end of the spoiler body is hinged to the fixing base. A hinging base is arranged in the spoiler body and hinged to the hydraulic rod. The automobile spoiler with the adjustable height is simple in structure, the height is convenient to adjust, installing is convenient, the anti-impact strength and the bending strength of the spoiler body of the automobile spoiler are large, and the heat resistance of the spoiler body of the automobile spoiler is high.

The invention relates to an automobile hydraulic power-driven assisted steering system, comprising a hydraulic pump and a motor which drives the hydraulic pump, wherein the oil inlet of the hydraulic pump is connected with an oil storage tank, the oil outlet of the hydraulic pump is connected with an energy storing device by virtue of a check valve, the energy storing device is connected with a steering assisted cylinder, and the steering assisted cylinder is connected with the oil storage tank. The automobile hydraulic power-driven assisted steering system provided by the invention remains a steering actuating mechanism on the traditional automobile, only a hydraulic system is changed, low-speed righting capability of an automobile is good, and reasonable control is adopted, thus the entire system has the characteristics of light steering at low speed and stable steering at high speed, a one-way hydraulic valve is closed after a motor stops working, the hydraulic pump can be effectively protected, and service lives of key parts of the system can be prolonged. A power source of the motor adopts a vehicle-mounted low-voltage system for providing energy, thus the automobile hydraulic power-driven assisted steering system provided by the invention is applicable to all the vehicles.

The invention relates to a lane guidance method for a vehicle, in particular for a commercial vehicle. The vehicle is equipped with a direction control system which actively performs direction control. The vehicle moves inside a lane of a predetermined track which is predetermined on the basis of detected lane parameters. According to the invention, the direction control system respectively summates the predetermined track or detects at least one specified track parameter as a track real value and compares the track real value with at least one predetermined track reference value. When there is a deviation between the track real value and the track reference value, the predetermined track is changed to make the wheels of the vehicle basically travel inside the tracks (2,3) of the lane. An independent claim is also included for a tracking system for executing the method.

The invention discloses an electric fork-lift truck steering device which comprises a steering wheel, a steering column, a cardan joint, a steering actuating device, a carframe and a shift wheel, wherein the steering column is arranged below the steering wheel and is connected with the steering wheel. The cardan joint is arranged below the steering column and is connected with the steering column. The steering actuating device is connected with the cardan joint. The carframe is connected with the steering actuating device. The shift wheel is arranged on the carframe. The steering actuating device comprises a chain wheel mechanism and the steering wheel, wherein the horizontally arranged steering is connected with the cardan joint through the chain whell mechanism. The carframe comprises a vertical part and a horizontal part, wherein the horizontal part is connected with the bottom end of the vertical part. The top end of the vertical part of the carframe is fixedly connected with the end face of the steering wheel. The horizontal part of the carframe is provided with the shift wheel. The electric fork-lift truck steering device has the advantages of being simple in structure, convenient to operate and low in cost. In the process of steering, a driver can adjust angles of the shift wheel by constantly steering the steering wheel according to factors such as road surface bending changes and speed changes to maintain steering tracks which a driver wants to reach, and therefore the electric fork-lift truck steering device is reliable in steering, and low in stoppage rate and the like.

The invention provides an electric and electric control combined hydraulic power steering system. The electric and electric control combined hydraulic power steering system comprises a steering control unit, a hydraulic power pipeline and a steering oil pump which is arranged on the hydraulic power pipeline; an electromagnetic valve is also arranged on the hydraulic power pipeline; a steering motor drives the steering oil pump; the steering control unit is connected with the electromagnetic valve and the steering motor; and the steering control unit is used for controlling the steering motor to drive the steering oil pump when the electromagnetic valve is invalid. Under normal circumstances, the electric and electric control combined hydraulic power steering system works in an electric control mode; and if the electric control mode is invalid, the electric control mode is switched into an electric mode. According to the electric and electric control combined hydraulic power steering system, the problems that the fatigue level during rapid steering is increased and the steering comfort is reduced under a situation that the existing electric control hydraulic power steering system isswitched into a common hydraulic power steering system when an electric control device is invalid are effectively solved; and meanwhile, the problem that an electric hydraulic power steering system cannot often work within a rotation speed range corresponding to high efficiency is solved.

The invention discloses an unmanned aerial vehicle operation path planning method and device, an unmanned aerial vehicle and a medium. The method comprises the steps of determining concave points on the boundary of an operation area, generating segmentation lines passing through the concave points in the operation direction so as to segment the operation area into a plurality of sub-areas, planning operation paths of the sub-areas, when it is determined that the two adjacent sub-areas taking the concave point as the common vertex and having no common boundary meet a preset merging condition, merging the operation paths close to the concave point in the two adjacent sub-areas, and performing global optimization on the merged operation paths and the operation paths of the other sub-areas toobtain the operation paths of the operation regions. The detour frequency and the steering frequency of the unmanned aerial vehicle when the unmanned aerial vehicle encounters the concave points are reduced, the non-operation distance and the steering of the unmanned aerial vehicle are reduced, the operation distance of the unmanned aerial vehicle is increased, the operable time and the operable area of the unmanned aerial vehicle are further increased, the number of globally optimized operation paths is reduced, the calculation amount is reduced, and the efficiency of obtaining the optimal operation path is improved.

The invention relates to a special vehicle for bridge erection and transportation for highways, railways, intercity light rails and the like, and an economically affordable and efficient design method of an engineering bridge transport vehicle. The vehicle at least comprises a front vehicle, a rear vehicle, working devices, a steering system, a transmission system, a hanging system, an anti-overturn bridge, a brake system, an anti-overturn bridge connecting seat, a frame, an operation platform and a connecting piece thereof, and is characterized in that the front vehicle and the rear vehicle are respectively connected with the front part and the rear part of the same bridge via respective working devices, the operation platform is provided with a two-way operation system, and the driver can drive the vehicle forwards or reversely according to different needs so as to make the vehicle driven out of a roadbed quickly after unloading the bridge. The invention can fully meet the technology of bridge transportation construction.

The invention discloses a hydraulic system of a wide-body dump truck. The hydraulic system is characterized by consisting of a hydraulic oil tank, an engine, a power steering pump, a high pressure filter, a reversing valve, an energy accumulator, a cooling pipeline, a steering gear, a steering actuation cylinder, a gearbox PTO, a lifting pump, an oil return filter, a lifting cylinder, an air control reversing valve and a connecting pipeline; the power steering pump is connected with the engine, and the lifting pump is connected to the gearbox PTO through a transmission shaft; the power steering pump is connected to the reversing valve after passing through the high pressure filter; two oil passages are formed after passing through the reversing valve, one oil passage is connected to the energy accumulator and the steering gear to supply oil to a steering system, and the other oil passage is connected with the air control reversing valve after passing through the cooling pipeline and supplies oil to a hydraulic lifting system; and emergency steering is realized, the safety is improved, the oil temperature of the hydraulic system is significantly reduced, and the cleanliness of the hydraulic oil is improved.

The invention relates to a steering system for a five-axle heavy duty car. The forward-rotation output shaft of a right angle gear box is connected with the input end of a front steering gear through the transmission shaft of a first front axle, the output end of the front steering gear is hinged with the middle part of a driving arm, the lower end of the driving arm is connected with a steering arm on a first wheel hub through the longitudinal tie of a first front axle, the upper end of the driving arm is connected with the upper end of an oscillating arm through the upper tie rod of a second front axle, the middle part of the oscillating arm is hinged on a longitudinal beam, and the lower end of the oscillating arm is connected with a steering arm on a second wheel hub through the longitudinal tie of a second front axle; after being decelerated, the backward-rotation output shaft of the right angle gear box is connected with the input end of a rear steering gear through a transmission shaft mechanism, and the output end of the rear steering gear is connected with a steering arm on a fifth wheel hub through the longitudinal tie of a fifth axle. The transmission part of the steering system is under very small stress, the flexibility and the reliability of steering can be guaranteed, the operation is labor saving, and the steering system has the advantages of simple structure, easy assembly, light overall weight, low consumption of materials and low production cost.

The invention relates to the technical field of steering equipment for vehicles, and provides a circulating ball type electric power steering gear which comprises a mechanical steering gear, a speed reducer, an integrated motor controller and a sensor. The mechanical steering gear is provided with a steering gear shell and a steering screw, and the speed reducer is provided with a speed reducer shell. The steering gear shell and the speed reducer shell are fixed in a detachable connection mode. A steering input shaft and a worm wheel shaft are arranged in the speed reducer and are flexibly connected through an elastic torsion bar; and a sensor is arranged at the joint of the input end of the steering input shaft and the output end of the worm wheel shaft. The Hela torque sensor capable ofoutputting a torque signal and a corner signal at the same time is adopted, induction is more sensitive, and the signals are more stable and reliable.

The invention provides a pressure-impacting centrifugal dehumidifier with a guiding and adsorbing device. The pressure-impacting centrifugal dehumidifier comprises an air inlet box, a fan, an air outlet pipe, an air guide hood, an air delivery conduit and a steam exhaust chamber, and is characterized in that the air guide hood is composed of an inner guide pipe, an outer guide pipe, inner guide sheets, outer guide sheets and an outer cover, the top ends of the inner guide pipe and the outer guide pipe are connected together by a break-angle-shaped circular ring, six inner guide sheets arranged in the radial direction are arranged in the inner guide pipe to form six longitudinal guide channels, six longitudinal outer guide sheets are uniformly arranged on the outer side of the outer guide pipe, the outer cover is arranged above the inner guide pipe and the outer guide pipe and outside the outer guide pipe through the intersection position of an inverted-cone-shaped guide body and the inner guide sheets at the center of the inner guide pipe, the bottom end of the inner guide pipe is connected with an air outlet pipe of the fan, and the bottom end of the outer guide pipe is connected with the bottom surface of the steam exhaust chamber. The pressure-impacting centrifugal dehumidifier overcomes the defects that the existing pressure-impacting centrifugal dehumidifier has high eddy and turbulent losses and large air leakage quantity of a steam exhaust opening, and therefore, the using quality is improved.

The invention relates to a hydrostatic drive high-speed transplanter chassis. An engine provides a power source for a two-way plunger variable pump and an auxiliary gear pump. The two-way plunger variable pump is connected with a two-stage variable traveling transplant motor through a closed circuit and provides power for a parking brake control valve. An output shaft of the two-stage variable traveling transplant motor is connected with a mechanical transfer case, and the mechanical transfer case transmits power to an inter-axle differential and transplant mechanism speed change and power separation boxes. The transplant mechanism speed change and power separation boxes are connected with a transplant drive mechanism, the power separation box determines whether a transplant mechanism works or not, and the transplant mechanism speed change box adjusts the transplant plant spacing according to different transmission ratios. The output end of the auxiliary gear pump is connected with a flow distribution valve. The flow distribution valve distributes oil liquid to a high-speed electromagnetic reversing valve and a profiling mechanism control valve, the high-speed electromagnetic reversing valve and a steering gear control a steering oil cylinder, the profiling mechanism control valve controls a profiling mechanism oil cylinder, and a transplant mechanism lifting oil cylinder is controlled by a transplant mechanism lifting control valve.

The invention discloses a tennis ball picking-up and transporting vehicle. The tennis ball picking-up and transporting vehicle comprises a guide wheel, walking wheels and a frame, wherein the frame is provided with a lower ball storage box and an upper ball storage box; the frame comprises vertical connecting rods and a horizontal connecting rod; a connecting shaft is arranged in front of the bottom horizontal connecting rod, and is connected with the front vertical connecting rod; the walking wheels are connected with both sides of the connecting shaft; a picking-up rotating wheel is arranged between two walking wheels, and is fixedly connected with the connecting shaft; a picked tennis ball is respectively matched with picking-up end surfaces of two adjacent picking-up rotating wheels; the distance between the end surfaces of the adjacent picking-up rotating wheels is smaller than the outer-circle diameter of the tennis ball in a free state; a first supporting rod is arranged between two vertical connecting rods, and is connected with an upper baffle plate; a lower guide plate is arranged on the bottom horizontal connecting rod. The tennis ball picking-up and transporting vehicle is reliable in transmission and convenient to produce, assemble and adjust, reduces the picking-up and transporting workload of personnel picking up the balls, and improves the picking-up efficiency, thereby being especially applicable to occasions with larger scale and more users.

The invention discloses an automobile front axle steering knuckle and front axle connecting mechanism. The mechanism comprises a steering knuckle and a front axle which are connected through a masterpin, and is characterized in that an upper cylindrical bore and lower cylindrical bore of the steering knuckle are respectively in interference fit with a tapered roller bearing and a roller pin bearing, the tapered roller bearing and the roller pin bearing are in transition fit, the upper cylindrical bore is internally provided with a first limiting device cooperating with the tapered roller bearing and axially limiting the master pin, a master pin bore of the front axle is internally provided with a second limiting device matched with the surface of the master pin, and the second limiting device limits the master pin axially and radially through the axial acting force of the first limiting device on the master pin. The automobile front axle steering knuckle and front axle connecting mechanism has the advantages that the tapered roller bearing not only can bear the axial force, but also can bear the radial force, the bearing capacity is large, and the looseness is not easy; the masterpin and the lower end of the steering knuckle are connected through the roller pin bearing, and the steering is light and convenient.

The invention relates to a manual hydraulic carrier for logistics. The manual hydraulic carrier includes a frame, a wheel frame and a hydraulic cylinder, the frame includes two parallel crossing feet,lifting devices are arranged at one ends of the crossing feet, the lifting devices are provided with supporting wheels, the wheel frame is located at the end, away from the supporting wheels, of theframe, and the wheel rack is rotatably connected with steering wheels; the hydraulic cylinder is vertically arranged on the wheel frame, the upper end of the hydraulic cylinder is connected to the frame, two supporting devices are symmetrically arranged at the end, away from the supporting wheels, of the frame, and each supporting device includes a side eccentric wheel, lifting rods and a drivingassembly; and the lifting rods are obliquely arranged, the side eccentric wheels are installed at the lower ends of the lifting rods, the side eccentric wheels are of the same height as the supportingwheels, the frame is provided with two guiding holes, the two guiding holes internally correspond to the lifting rods correspondingly, the two guiding holes are arranged in an inverted V shape, and the driving assemblies are installed on the frame and connected with the lifting rods. The manual hydraulic carrier for logistics has the effect of great stability.

The invention discloses a self-lifting tennis ball picking and transporting vehicle. The vehicle comprises a guide wheel, two traveling wheels, a frame and a tennis ball lifting device, wherein the tennis ball lifting device is connected with the frame; the upper part of the frame is provided with a ball storage box; the frame comprises vertical connecting rods and a bottom horizontal connecting rod; a connecting shaft is arranged on the front side of the bottom horizontal connecting rod; the two ends of the connecting shaft are connected with the vertical connecting rods on the two sides of the front side through the connecting seat; the traveling wheels are connected with the two sides of the connecting shaft; ball picking rotating wheels are uniformly distributed between the two traveling wheels and are fixedly connected with the connecting shaft; a picked tennis ball is matched with ball picking end faces of two adjacent ball picking rotating wheels respectively; the distance of the ball picking end faces of the two adjacent ball picking rotating wheels is smaller than the outer circle diameter in a free state of the tennis ball; the external diameter of the ball picking rotating wheel is smaller than the external diameter of the traveling wheels. According to the vehicle, automatic ball picking can be realized, and the ball picking efficiency is improved; the vehicle is particularly suitable for being used at large-sized tennis courts and on occasions of more users.

The invention provides an electric bypass valve device. The electric bypass valve device comprises a first valve body, a second valve body, a rotating shaft and a stepper motor, wherein two oil way holes are formed in the first valve body; and an oil control disk is placed between the second valve body and the first valve body, and is provided with two comma-shaped oil holes. The stepper motor drives the oil control disk to rotate through the rotating shaft according to a control signal to change the valve opening overlap area between the two comma-shaped oil holes and the two oil way holes of the first valve body so as to change the oil flow of a bypass oil way, so that a power steering gear outputs different steering assisting powers as required when a vehicle is steered under the working condition of different vehicle speeds. The device can realize the adjustment of the assisting powers of the power steering gear along with the speeds, can output different assisting power characteristic curves to enhance the driver hand feel in high-speed driving, has the advantages of simple structure, lower cost and easy control, and improves the control stability and safety in vehicle driving.

The invention discloses a green wave signal control method in a bus system area. The green wave signal control method in the bus system area comprises the steps of: firstly, dividing routes in the area into transverse routes and lengthways routes; then calculating a regular timing scheme by using a Webster signal timing method; determining a key period based on an average delay time which is taken by a bus to stop at bus stops for loading and unloading passengers and an average time length which is taken for passing through crossings; converting the delay time to a spatial distance; determining a virtual road network and gridding the area; alternately arranging transverse periods and lengthways periods of each grid cell; adjusting signals by using a mathematic solution way to guarantee bus green waves; and finally determining a first bus time, a last bus time and a departure interval based on a signal period and a change rule. Through signal coordination control and bus scheduling in the area, the control method provided by the invention, has the advantages of guaranteeing bus green wave passing in the whole region, reducing delay of the bus system and improving service level of the bus system.

The invention relates to a method and a device for producing staple fibers. According to the invention, in a first process step, a tow from molten filament strands is produced and deposited in a tow can. In a second process step, the tows of a plurality of tow cans of a can creel are withdrawn, treated and cut to give staple fibers. In order to reduce the interruption times between the first process step and the second process step, the tow, in the first process step, is deposited directly into the tow can retained in the can creel, and the tow cans of the can creel are filled one after the other.

The invention relates to a light path deflecting optical fiber strain sensor based on an optical fiber LP21 mode, comprising a bendable and twistable substrate, a light spot detector and at least one group of optical fiber light spot generating and sensing devices, wherein each optical fiber light spot generating and sensing device comprises a light source, a mode selector and an optical fiber based on the optical fiber LP21 mode; the optical fiber comprises an incident part, a sensing part and an emergent part; the sensing part comprises a sensing part input end connected with the incident part of the optical fiber and a sensing part output end connected with the emergent part of the optical fiber; the sensing part input end and the sensing part output end are cambered; the incident part is divided into two segments in contact with each other, and the emergent part is also divided into two segments in contact with each other; the sensing part is divided into two segments and the sensing part input end and the sensing part output end are separated from each other; and the two segments of the emergent part are connected through an optical fiber convolution part, thereby realizing the convolution and deflection of the light path.

The invention discloses an electric power steering mechanism which comprises an operating mechanism used for operating steering and a steering mechanism connected to wheels, and the operating mechanism is connected with the steering mechanism through an electric power steering gear. The mechanism further comprises a controller, a vehicle speed sensor and a torque sensor, wherein the vehicle speedsensor is used for detecting the rotating speed of wheels, the torque sensor is used for detecting external force torque borne by the operating mechanism, and the controller is in signal connection with the electric power-assisted steering gear, the vehicle speed sensor and the torque sensor. When the external force torque is larger than A, the electric power-assisted steering gear provides power-assisted torque for the steering mechanism, and the power-assisted torque is in negative correlation with the rotating speed of the wheels. The electric power-assisted steering gear is installed between the operating mechanism and the steering mechanism, does not occupy the space of a cab and is convenient to install and arrange. And the power-assisted torque provided by the electric power-assisted steering gear is negatively related to the rotating speed of the wheels, that is, the power-assisted value provided by the electric power-assisted steering gear is reduced along with the increase ofthe vehicle speed, so that the operation safety is ensured while the convenience in operation is ensured.

The invention discloses a steering device for controlling a front wheel of a motor tricycle. The steering device comprises a front fork and a steering column, wherein the front fork comprises a left fork leg, a right fork leg and a bottom plate, the left and right fork legs are parallel to each other, and the bottom plate is used for connecting the left and right fork legs; and a first end of the steering column is connected with a steering wheel. A gravity bearing component is installed on the bottom plate, a gear box is installed on the gravity bearing component, a D-shaped toothed ring, an external gear and a spindle are arranged inside the gear box, the D-shaped toothed ring and the external gear are installed in the gear box through supports, the spindle is connected with the D-shaped toothed ring, a U-shaped hollow part is arranged on the inner side of the D-shaped toothed ring, teeth meshed with the external gear are arranged on the inner surface of an arc-shaped part of the D-shaped toothed ring, the external gear is arranged in the hollow part and meshed with the teeth of the D-shaped toothed ring, and the external gear is connected with a second end of the steering column. Compared with existing steering devices for front wheels, the steering device has the advantages of lightness and convenience in steering, large bearing capacity, convenience in installation and maintenance, large steering angle of the front wheel and the like.