67results about How to "Reduce steering effort" patented technology

The circular ball type electric booster steering device has, except screw, nut, gear sector, steel ball and other mechanical parts, torque sensor, boosting motor, decelerating mechanism, electronic controller unit, etc. The electronic controller unit determines the target current of the motor based on the steering disc torque and the vehicle speed to complete the feedback tracking control of the motor current. The decelerating mechanism has input connected to the motor and output connected to the screw or gear sector shaft in the circular ball steering unit. The present invention has saving in energy, provides proper power force fitting different running conditions, and has less parts, light weight, compact structure and high automation.

The invention discloses a vehicle steer-by-wire device with a redundant mechanism, and a control method of the vehicle steer-by-wire device. The vehicle steer-by-wire device comprises a steering manipulation mechanism, a steering execution mechanism, a first clutch device and a controller; the first clutch device is arranged at the rear end of a steering coil column, and used for connecting or disconnecting the steering manipulation mechanism and the steering execution mechanism; the controller controls the steering manipulation mechanism and the steering execution mechanism; and the steeringexecution mechanism comprises a main motor, a rack assisted steering transmission mechanism connected with the main motor, an auxiliary motor, and a pinion electric assistance transmission mechanism connected with the auxiliary motor. Through mechanical disconnecting of the steering execution mechanism and the steering manipulation mechanism, and redundant design of the steering execution mechanism, the reliability of a steering system for high-grade automatic driving is improved, and high-safety design of the steer-by-wire system is achieved.

The invention relates to the field of electromechanical systems and motor vehicle application, and in particularly relates to a 5-ton-class circulating ball type dual-mode electric power steering device. The electric power steering device comprises a steering device housing assembly, an input shaft and screw assembly, a sector shaft assembly, a supporting base assembly, a turbine, a worm, an inner end cap assembly, a rotating angle and torque sensor, an outer end cap assembly, a plum connecting sleeve assembly and a motor assembly. A motor serves as a power source; power is transmitted to the input shaft and screw assembly via a worm gear and the worm, and the input shaft and screw assembly outputs torque and angle displacement via a sector shaft. The 5-ton-class circulating ball type dual-mode electric power steering device has two control modes of angle (position) and torque (assisting power).

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.

During impact of an opening solid-material bullet, a slightly concave or substantially blunt-nosed nose structure of at most 1.2× caliber is provided to such a bullet by mushrooming to generate a blast wave. The bullet opens to a size that is 1.1 to 1.15× caliber. The mushrooming is achieved by arranging on the nose of the bullet a cavity that is in the direction of the center axis of the bullet and has a substantially even-sized diameter.

In a wheel guide arrangement of a steered motor vehicle wheel which has control arms and a steering knuckle, and wherein the steering knuckle includes a reception structure for a wheel mount and also connecting areas for the mounting of stubs of ball joints connected to the wheel control arms, the connecting areas are disposed at different distances from the wheel axis and the ball joints are arranged between the connecting areas and the wheel axis of rotation, that is, above the connecting areas.

The invention provides a security and protection robot. A front wheel steering and back wheel driving structure manner is adopted, a multi-sensor data fusion positioning method is used for motion, a vehicle frame, a front wheel assembly, a back wheel assembly and a steering mechanism are included, the front wheel assembly and the back wheel assembly are supported to the front end and the back endof the vehicle frame correspondingly, and the steering mechanism is installed on the lower surface of the vehicle frame. According to a steering chassis, position allocation of front and back wheels and a steering device meets the ackerman corner principle, it can be guaranteed that all wheels do pure rolling during steering, the steering force is reduced, and the motor power is reduced; and meanwhile, a binocular camera, a laser radar and a differential GPS are used in cooperation, and more accurate outdoor positioning information is provided.

The invention relates to an automobile steering assistant-control system and a control method and in particular relates to an electric drive pusher type steering system controlled by coupling force and displacement and a control method. The moment output end of a driving mechanism, connected with a steering motor, is connected with a worm crankpin steering gear through an output shaft; a steering rocker arm on the worm crankpin steering gear is used for controlling a steering knuckle arm; the steering knuckle arm is connected with a steering trapezium rod; an assistant motor is connected with and drives a speed reducing mechanism; the speed reducing mechanism drives an electric drive pusher; and the assistant motor is controlled by an ECU (Electronic Control Unit). The steering assistant-control system provides appropriate assistance under various driving conditions to reduce disturbance caused by an uneven road surface to the steering system, improves steering characteristics of an automobile, decreases the steering operation force of the automobile traveling at a low speed, enhances the steering stability of the automobile traveling at a high speed to further enhance the driving safety of the automobile and meets the requirements of different using objects by setting different steering hand power characteristics.

A steering device of a power-driven child vehicle comprises a steering wheel, a steering rod, a planet gear reducer, a steering front fork and wheels. The steering wheel is connected with the planet gear reducer through the steering rod, speed reduction and torque increase of input of the steering wheel are achieved through the planet gear reducer, and the steering front fork is driven to drive the wheels to perform steering. By setting a transmission ratio of the planet gear reducer, torque required by the steering wheel when the wheels perform steering can be reduced effectively, and steering difficulty is reduced. By means of the steering device, control force during steering of the child vehicle can be reduced, use difficulty of the child vehicle is reduced, the rotation angle of the steering wheel during steering can be enlarged effectively, and playability of the child vehicle is improved.

The invention discloses a control method of an electro-hydraulic type power-assisted steering system. The system comprises a motor, an energy accumulator, a hydraulic pump, an oil storage groove, a steering valve, a steering power-assisted cylinder and a control unit and the like, wherein a look-up table for data of the threshold value range of oil pressure of the energy accumulator is preset in the storage of the controller, and the data the threshold value range of oil pressure of the energy accumulator corresponds to the size of the needed assisting steering power calculated according to parameters such as the speed and the steering torque and the like of a vehicle; when the steering occurs, the control unit obtains the upper and lower limit threshold value of the oil pressure of the needed energy accumulator by acquiring signals such as the speed and the steering torque and the like of the current vehicle and inquiring in the look-up table. In the control method, the corresponding size of the assisting power can be provided according to the driving condition and the current assisting power need of the vehicle, the controllability of the vehicle in steering is effectively improved and the energy consumption is saved.

The invention provides a power steering device. The device comprises a housing assembly (1), an input shaft and screw assembly (2), a toothed fan shaft assembly (3), a corner torque sensor (8), and a motor assembly (11), wherein the corner torque sensor is axially connected with an input shaft and a screw shaft by rotating the input shaft forward or backward through a steering wheel; according to the state information (such as a vehicle speed, a turning radius and a road surface inclination) of a travelling vehicle and vehicle structure characteristics (such as a tread, a wheel base and weight), at different speeds, a system dynamically predicts and analyzes to obtain the maximum angle alpha0 permitted by the steering wheel under the assumption that a vehicle is in a critical state of rollover or sideslip; when a driver controls the vehicle over the time of the maximum angle, the system drives a motor to increase a steering resistance reversely and rapidly and prevent the steering wheel from turning, thereby effectively avoiding the rollover or sideslip of the vehicle when the driver controls the vehicle. The power steering device can intelligently calculate the maximum angle permitted by the steering wheel, thereby improving the safety degree of the steering device.

The invention discloses a vehicle steering mechanism. The mechanism is composed of a steering handle, an electric power steering system, a fixed clamp, a frame, a universal joint, a lever, a connecting rod, a pull rod, a front fork and wheels. The steering mechanism adopts the electric power steering system and the structure of the lever, the connecting rod and the pull rod, reduces the steering force, achieves the steering transmission ratio of 1:1, the steering operation is convenient, flexible, labor-saving and comfortable, and the mechanism has the advantages of safety, energy saving and environmental protection and is suitable for steering transmission for all types of vehicles.

The invention provides a gear sector shaft assembly (3) of an electric power steering device. The gear sector shaft assembly comprises a gear sector shaft (31), a gear sector shaft side cover plate (32), a gear sector shaft adjusting pin (33), a gear sector shaft adjusting nut (34), a gear sector shaft screw plug (35) and a roller pin bearing (36). The invention provides a heavy circulating ball type dual-mode electric power steering device. A large deceleration ratio mechanism and a corner torque sensor replace a rotary valve structure of the circulating ball type dual-mode electric power steering device; conversion from hydraulic transmission to intelligent electric transmission is achieved when extra space is not increased; and compared with a circulating ball type hydraulic power steering device of the same volume, power demand can be reduced by 30% and output maximum torque can be improved by 5%. Compared with the prior art, the excellent effects of the gear sector shaft are that overall strength is improved and strong impact vibration bearing capacity is achieved; reliable use is provided; a gap can be conveniently adjusted; vehicle linear driving stability can be improved and great driving feeling can be guaranteed; the design of the gear sector side cover plate (7) enables convenient link with the an electric circulating ball steering machine total housing; and the gear sector side cover plate can be easily processed, requires low cost and is suitable for batch production.

Provided is a cap for a handwheel that opens and closes a valve, capable of being readily attached to the handwheel without requiring a large space around the handwheel. The cap has easily switchable two working modes: One is a co-rotation mode where the cap is capable of rotating with the handwheel and the other is an independent rotation mode where the cap is capable of rotating independently of the handwheel. The cap has an internal casing to be securely fitted to the handwheel; an external casing being rotatable around its axis and having the internal casing in an interior thereof; a clutch for connecting the external casing with the internal casing and for disconnecting the former from the latter; and a maintaining member for keeping the external casing rotatable independently of the internal casing when they are disconnected by the clutch.

The invention provides a housing assembly of an electric power steering device and a device of same. The housing assembly comprises a first installation cavity, a second installation cavity and a third installation cavity, wherein the first installation is arranged along a horizontal direction and a non-through cavity; the second installation cavity is a non-through cavity; the third installation cavity is a through cavity; the first installation cavity communicates with the second installation cavity; the first installation cavity communicates with the third installation cavity; and the second installation cavity does not communicate with the third installation cavity. The housing has great overall strength and can stand complicate shock and vibration and has reliable use; the housing assembly has great technology property and is easy to process and form; low cost is required, so the housing assembly is suitable for batch production and has high integrating degree and great assembling performance; and the housing assembly is applied to the steering device.

The invention relates to a motor vehicle having an axle bracket with at least two longitudinal members 13, 14 oriented at least approximately in the longitudinal direction of the vehicle and at leastone crossmember 11, 12 connecting said longitudinal members, which longitudinal members and crossmember describe a first constructional unit 1, which axle bracket 10, in addition to an at least partially articulated support for wheel-guiding links, is provided for receiving an electric motor drive unit 30 for the vehicle. In addition to the members 11, 12, 13, 14 describing the first constructional unit 1, two further longitudinal members 23, 24 and a further crossmember 22 connecting said further longitudinal members are provided in the form of a second constructional unit 2 which, in the installed state of the axle bracket, is located below or above the first constructional unit 1, as viewed in the vertical direction, in a vehicle standing horizontally, and is connected releasably to thefirst constructional unit 1, wherein at least one of the plurality of wheel-guiding links provided is supported in an at least partially articulated manner on each constructional unit on each side ofthe vehicle.

The invention discloses a front wheel steering chassis of a security robot. By adopting the steering chassis of a structure, during steering, all wheels make pure rolling, steering force is reduced, and thus motor power is reduced; and a damping mechanism is arranged, so that during obstacle crossing of the robot, a vehicle body is stable, and vibration is small. The front wheel steering chassis comprises a vehicle frame, a front wheel assembly, a rear wheel assembly and a steering mechanism. The front wheel assembly and the rear wheel assembly are supported at the front end and the rear end of the vehicle frame correspondingly, and the steering mechanism is mounted on the lower surface of the vehicle frame. Position arrangement of the front and rear wheels and a steering gear in the frontwheel steering chassis conforms to the Ackerman angle theory, it can be guaranteed that during steering, all the wheels make pure rolling, the steering force is reduced, and thus the motor power is reduced.

The invention relates to an axle suspension device comprising a vehicle axle with an axle housing 1; and at least one vertical suspension arm which extends vertically along the vehicle at each end part region of the vehicle axle and at identical height utilizing hinged at one end of the first hinge portion 12 and axle or axle housing 1 of a connecting member at the other longitudinal end of the cantilever hinged on a frame having a first joint; triangular cantilever 3, which utilizes hinged at one end thereof a second hinge axle located in the center of the two parts 1, two triangular cantilever pull rod 42 extends separately from the first hinge portion 12 at a different height from the second hinge portion in a plane and can use its hinge portion away from the second end portion of the frame 2 is hinged on. The second triangle cantilever hinge portion 3 is disposed below the two vertically uppermost region of the axle housing 1, and a first hinge portion 12 provided in the vertical direction than the second hinge portion 2 higher altitudes.

The invention relates to a central steering type independent suspension suitable for serving as an independent suspension of a commercial vehicle. The suspension comprises a spring, a thrust bearing, a hollow section steel structure, two upper cross arms, a steering knuckle and two lower cross arms, wherein the hollow section steel structure is arranged on the steering knuckle; an air spring is connected with the hollow section steel structure through the thrust spring; when the position of the spring is set, the axis of the spring is connected with a ground imprinting center through a tire; the outer ends of the upper cross arms are connected with the hollow section steel structure through spherical hinges; the outer ends of the two lower cross arms are connected to the steering knuckle through spherical hinges; the inner ends of the upper cross arms and the lower cross arms are connected to a car frame through spherical hinges. The suspension is simple and reasonable in structure; a swing arm on the suspension is flexibly arranged in height, the lateral force on a ball pin of the swing arm is small, the road feel is good, the steering force and the impact force transmitted to a steering wheel are small, and the aligning torque required for wheels in a low-speed state can be reasonably provided.

The invention provides a power steering device of an intelligent computing motor target torque. The power steering device comprises a housing assembly (1), an input and screw rod assembly (2), a gear sector shaft assembly (3), a corner torque sensor (8) and a motor assembly (11). When an input shaft is rotated forwardly or backwardly by a steering wheel, the input shaft is connected with a screw rod shaft by an elastic torsion bar and a certain angle is formed between the input shaft and the screw rod shaft, the screw rod shaft can coaxially rotate with the input shaft as the screw rod shaft and the input shaft reach an angular displacement banking limit; the corner torque sensor shaft is axially connected with the input shaft and the screw rod shaft; and the control system computes a target torque of the motor assembly via collecting an output torque value of the corner torque sensor, and drives the motor assembly to output an assisting torque via a torque control mode. The target torque of the motor assembly can be intelligently computed and the motor assembly can be driven to output the assisting torque via the torque control mode, so intelligence degree of the steering device can be improved.

Regulating apparatus for a descender comprises a spool 40, a line 48 wound upon the spool 40 to be drawn off during a descent and a fan 44 or similar brake operative upon the spool to limit its speed of forward rotation and hence the rate of descent. The inertial retarding effect of the moment of inertia of the spool 40 is overcome by an electric motor 42 arranged to accelerate the spool 40 during an initial part of the descent. A free-wheeling tether 50 for the line 48 prevents overrun of the spool 40 from picking up the line 48 at the end of a descent. The motor 42 may be run in reverse to rewind the line 48 after a descent.

The invention discloses an active steering system based on an angle driver, and belongs to the technical field of automobile steering. The angle driver comprises a first input shaft, a driving bevel gear, a driven bevel gear and an output shaft. The driving steering system is characterized in that on the basis of the angle driver, the driving steering system further comprises a decelerating motor,a second input shaft and double rows of planetary gears; one end of the first input shaft is coaxially connected with a steering wheel, and the other end of the first input shaft is coaxially fixedlyconnected with the driving bevel gear; the driven bevel gear meshes with the driving bevel gear, and is coaxially fixedly connected to a planetary bracket of the double rows of planetary gears; an output shaft of the decelerating motor is coaxially and fixedly connected with a sun wheel of the double rows of planetary gears by the second input shaft; and the other sun wheel is coaxially and fixedly connected with an electric powering steering gear mounted on a connecting rod between two wheels of an automobile by the output shaft. The active steering function can be achieved on the basis of the angle driver, and the driving ratio can be adjusted by controlling rotation of the decelerating motor.

The invention relates to a patient transfer device suitable for people unable to move freely. A first supporting plate, a second supporting plate and a third supporting plate can be divided into a first supporting area and a second supporting area which are capable of rotating relatively, the lying posture of people unable to move freely can be switched into a turnover posture, and the gravity center of people unable to move freely can be driven to move along a second direction, so that the vertical distance between the projection of the gravity center of people unable to move freely in a direction approximately perpendicular to the ground and the axis of a roller along a second direction can be switched from a state smaller than a set threshold value into a state larger than the set threshold value. In a first use form, the width of the roller along the second direction can be larger than that of a bottom plate, and the width of the roller is decreased when the roller is switched fromthe first use form into a second use form, so that the vertical distance can be switched from the state larger than the set threshold value to the state smaller than the set threshold value accordingto the mode that the axis moves along the second direction.

The invention provides a vehicle steering gear power-assisted steering mechanism. The power-assisted steering mechanism comprises a steering gear, steering tie rods, a left expansion sheath, a right expansion sheath and a power-assisted air pipe. The steering gear comprises a protective cover, a rack, a gear and spherical heads. The gear is connected with a steering disk. The rack comprises an engaging tooth part and a limiting part which are arranged from left to right. The engaging tooth part is engaged with the gear. The gear and the engaging tooth part are covered with the protective cover. The left and right ends of the rack are provided with the spherical heads. Steering balls are fixed to the ends of the steering tie rods. The steering balls are mounted in the spherical heads. The left expansion sheath and the right expansion sheath are mounted at the left and right ends of the rack correspondingly. Fixing rings are mounted on the steering tie rods. the two ends of the left expansion sheath are in sealing connection with the corresponding fixing ring and the protective cover correspondingly. The two ends of the right expansion sheath are in sealing connection with the limiting part of the rack and the corresponding fixing ring correspondingly. The two ends of the power-assisted air pipe communicate with the left expansion sheath and the right expansion sheath correspondingly. Through the vehicle steering gear power-assisted steering mechanism, the problems that the steering disk is hard to steer and the using comfort degree is low are solved.

A lever for a drive-by-wire system installed in a vehicle, may include a lever body that is rotatably mounted on a console surface of the vehicle, and an acceleration lever and a steering roller that are installed in the lever body, such that it is possible to control a change of a gear shift stage, acceleration, and a change of a proceeding direction of the vehicle in a unified manner, and there is no risk of erroneous manipulations of an accelerator pedal and a brake pedal, and acceleration and a proceeding direction may be changed using a finger, thereby improving performance in manipulating the vehicle.

The invention provides an electric power steering input shaft and screw assembly (2). The input shaft and screw assembly (2) comprises a first cylindrical pin (21), an input shaft (22), an elastic torsion bar (23), a needle bearing (24), a second cylindrical pin (25), a screw shaft (26), a steel ball drive pipe (27), a press plate of the drive pipe (28) and a steering nut (29). Provided is an input shaft and screw device and electric power steering thereof which have a high strength and a high reliability.

The invention discloses a new-energy automobile hydraulic detection system. The system is characterized in that the system comprises a controller, a voice module, a state detection module and a hydraulic power assisting module, the voice module, the state detection module and the hydraulic power assisting module are connected with the controller, the hydraulic power assisting module comprises an oil tank, a high-pressure oil outflow pipe, a braking control pump, a motor driver, a motor, a speed reduction mechanism, a low-pressure oil return pipe, a steering control pump, a steering gear and afilter, the oil tank is connected with the high-pressure oil outflow pipe, the steering control pump and the braking control pump are connected with the high-pressure oil outflow pipe and sequentiallyconnected with the low-pressure oil return pipe, the braking control pump, the motor driver, the motor and the speed reduction mechanism, the steering control pump is connected with the steering gear, the low-pressure oil return pipe, the filter and the oil tank are sequentially connected, an automobile steering assisting system reduces steering strength of a driver and enhances controllability,automobile traveling is assisted, and vehicle accidents are reduced.

The invention discloses a hydraulic booster type power monitoring system for a new energy vehicle. The hydraulic booster type power monitoring system for the new energy vehicle is characterized by comprising a hydraulic power assisted module, a state detection module, a protection module, a fuel cell control center and a vehicle total controller; the protection module, the hydraulic power assistedmodule, the state detection module and the vehicle total controller are correspondingly connected with the fuel cell control center; the fuel cell control center comprises an A / D converter, a DSP unit, a CAN unit and a driving circuit; the A / D converter, the CAN unit and the driving circuit are correspondingly connected with the DSP unit; and the DSP unit is connected with the vehicle total controller through the CAN unit. Safety measures widely applied to the field of vehicles only have several indirect assistant effects at present; a vehicle steering power system reduces driver steering force and enhances the controllability; and the hydraulic booster type power monitoring system for the new energy vehicle directly has an assistant effect on vehicle running so that vehicle accidents arereduced.