673results about "Mechanical steering gears" patented technology

A steering assembly comprises: a steering rack configured to be linearly movable; a nut rotatably coupled to the steering rack, wherein the steering rack linearly moves in association with rotation of the nut; a bearing configured to support the rotation of the nut, the bearing comprising an outer race having a flanged part protruding from an outer surface of the outer race of the bearing; and a rack housing accommodating at least a portion of the steering rack, the nut, and the bearing, and having a groove recessed from an inner surface of the rack housing. The flanged part protruding from the outer surface of the outer race of the bearing is disposed in the groove recessed from the inner surface of the rack housing.

A method to control a steer-by-wire steering system for a road vehicle, the steer-by-wire steering system including a steering, a road wheel actuator to actuate road wheels via a rack, and a controller configured or programmed to include a position controller configured or programmed to calculate, based on an actual rack position and a rack position request, a target rack position for the road wheel actuator, the method including, in response to a requested rack speed being above a predefined maximum value, limiting the requested rack speed to a maximum rack speed value used by the position controller to calculate the target rack position for the road wheel actuator.

The invention relates to the technical field of automobile parts, in particular to a gap adjusting mechanism, a steering gear and an automobile. The gap adjusting mechanism is arranged in an installation cavity of a steering gear, a gear and a rack which are meshed with each other are further arranged in the installation cavity, the gap adjusting mechanism comprises an abutting structure and an adjusting structure, and the abutting structure is connected to the adjusting structure. Through the arranged adjusting structure, the position of the abutting structure relative to the gear is adjusted, then the gap between the gear and the rack is adjusted, and after adjustment is completed, when the automobile steering device steers and the rack moves in the length direction of the rack, due to the fact that the abutting structure can rotate around the axis of the abutting structure, the gap between the gear and the rack is adjusted. And rolling friction is generated between the abutting face and the face making contact with the rack, compared with traditional sliding friction, friction force is small, the abrasion degree of the surface (namely the abutting face) of the abutting structure is lower in long-term work, and friction abnormal noise is not prone to being generated.

A vehicle system includes a road wheel system having a road wheel actuator and at least one pinion angle sensor, and a control module. The control module is configured to receive a road wheel actuator command and a rack force, generate a model of the road wheel system based on the road wheel actuator command and the rack force, estimate, with a state observer, a steering pinion angle based on the generated model, the road wheel actuator command and the rack force, determine a validity of a steering pinion angle measured by the at least one pinion angle sensor based on the estimated steering pinion angle and a threshold, and in response to determining that the measured steering pinion angle is invalid, control a steering function of the vehicle based on the estimated steering pinion angle.

The invention discloses an air-ground power multiplexing hovercar adopting electric wheel angle modules. The air-ground power multiplexing hovercar integrates electric wheels, a suspension system, a steering system, a car body and a support system. The hovercar has the dual-mode function of a land mode and a flight mode, and switching between the land mode and the flight mode is completed through cooperative work of the electric wheels, the steering system and the support system. Wherein the electric wheels and the steering system both adopt high-integration power multiplexing design, that is, a land mode and a flight mode multiplex the same set of execution motor and planetary gear train, so that the problems that too many actuators are introduced due to switching of the flight mode and the dual modes, the light weight level is low due to miscellaneous equipment, and the power consumption is low are solved to a great extent. And the problem of low-efficiency carrying of invalid loads caused by two sets of independent power is solved. The electric wheel angle module of the hovercar adopts a modular design and is also suitable for four-wheel, six-wheel and other multi-axle vehicle frameworks, and proper electric wheel angle modules can be matched and mounted according to vehicle performance requirements.

The invention discloses a horizontal steering wheel with a walking mechanism and a steering mechanism, and belongs to the technical field of steering wheels. Comprising a support assembly, a spring shock absorber is rotationally installed on the support assembly, a fixing frame is rotationally installed at one end of the spring shock absorber, and a wheel assembly is installed on the fixing frame; an upper connecting rod frame is rotationally installed on the support assembly and rotationally connected with the fixing frame, and a lower connecting rod frame is rotationally installed on the support assembly and rotationally connected with the fixing frame. The support assembly is provided with a driving assembly used for controlling the wheel assembly to steer. The upper connecting rod frame and the lower connecting rod frame form a parallelogram guide structure, and the upper connecting rod frame and the lower connecting rod frame swing synchronously in the damping process or under the heavy-load eccentric load working condition, so that tires are kept perpendicular to the ground all the time, the situation that the ground contact area is reduced due to inclination is avoided, it is guaranteed that contact pressure between the tires and the ground is evenly distributed, local abrasion is reduced, and the service life of the tires is prolonged. And meanwhile, the stability in the carrying process is improved.

The invention discloses an assembling structure and method for a pure electric steering gear with double speed reducing mechanisms, and relates to the technical field of pure electric steering gear. According to the structure, a speed reducing shell and a motor controller are arranged on a steering gear shell, and a first-stage speed reducing mechanism composed of a small gear and a large gear is sequentially arranged in the speed reducing shell; one end of the worm is connected with the large gear through a transmission balance shaft, and a spring and a bearing are arranged in the transmission balance shaft to achieve radial elastic supporting and mechanical balance. The assembling method is carried out according to the sequence of the self-adaptive adjusting assembly, the worm, the transmission balance shaft, the speed reduction shell, the steering gear shell and the motor controller, and through a rotation test, the meshing clearance of the gear pair and the worm and gear pair is subjected to self-adaptive compensation by utilizing elastic deformation of a spring and a rubber element. Under the condition of a single motor, a large total transmission ratio and a large steering output torque are obtained, and meanwhile transmission stability, noise vibration performance and long-term use reliability are considered.

A steering drive for a steering axle of a steerable vehicle includes an electric motor with a motor shaft. A steering lever is rotatable about a pivot axis that is parallel to the electric motor. First and second planetary stages each have a sun gear, planet gears, and a planet carrier. The steering drive is configured such that a force flow runs from the first sun gear via the first planet gears to the first planet carrier. The force flow furthermore runs via the second sun gear and via the second planet gears to the second planet carrier, and furthermore runs to the steering lever. The steering drive has a spur gear stage and is configured such that a force flow from the motor shaft to the first sun gear runs via the spur gear stage. Also disclosed is a steering axle and an industrial truck.

The invention relates to the field of carrier steering control, in particular to a non-return transmission device for a carrier and a control system thereof.The non-return transmission device comprises a large bevel gear, a small bevel gear, a large straight tooth, a small straight tooth, a worm and a turbine which are sequentially meshed, the large bevel gear is fixed to an input shaft, the small straight tooth and the worm are coaxial, the turbine is fixed to an output shaft, and when the worm drives and the turbine drives, the large straight tooth and the small straight tooth are coaxial. Clockwise and anticlockwise rotation of the input shaft is transmitted to the output shaft; when running external force acts on the turbine through the output shaft to try to reversely drive the worm, force flow is cut off through the self-locking effect of the worm and the turbine, non-return of the output shaft relative to the input shaft is achieved, and hand beating and high-speed shimmy are weakened. The input shaft and the output shaft are coaxially arranged through a coaxial device, and the gears, the worm and the worm gear are installed in the shaft box. The control system is provided with an angular speed sensor, a temperature sensor, a vibration sensor, a working cycle number sensor and the like, signals are input into an electronic control unit, and state monitoring and fault early warning are carried out through the electronic control unit.

The utility model discloses a four-wheel three-motor wall-climbing robot. The device comprises a main body frame, a pair of driving wheels connected to the front part of the main body frame, and a pair of driven modules which are hinged to the rear part of the main body frame and comprise driven wheels, a connecting rod capable of moving in the axial direction under the action of a steering device is arranged on the main body frame; the two ends of the connecting rod are hinged to the driven module through connecting rods. A sliding rail is arranged on the main body frame, a sliding block matched with the sliding rail is arranged on the sliding rail, and a connecting rod is arranged on one side of the sliding block. The robot has the advantages that a plurality of motors and drivers are arranged, and the control cabin used for overall dispatching and coordination is arranged, so that when the robot steers, two methods of differential rotation of a driving wheel and steering of a rear wheel through a steering mechanism can be selected and matched, different solutions can be provided for different working environments, and the adaptability is high; steering is achieved through meshing of the gear and the rack and the hinged relation of the connecting rods, the structure is simple, and steering torque is small.

The invention relates to a worm gear (10) for an auxiliary drive, in particular for a steering gear of a motor vehicle, comprising the following features: - a worm (100) with helical teeth designed as globoid teeth or globoid-like teeth, - a worm wheel (200) meshing with the worm (100), - the teeth of the worm (100) have teeth (130) in at least one of its two axial edge regions (112, 114) with a tooth height (H2) that is lower than the height (H1) of the other teeth of the worm (100). The invention further relates to a worm for such a worm gear and a manufacturing method for such a worm.

A steering device (1) is provided with an inner tube (3), a drive unit (5), and an energy absorption unit (7). The inner tube (3) is provided in the steering column housing (9) so as to be movable with respect to the steering column housing (9). The drive section (5) is provided with an output section (11) and a main body section (13) provided to the steering column housing (9), and drives the inner tube (3) by means of the output section (11). The energy absorption unit (7) is unitized, is provided between the inner tube (3) and the drive unit (5), and is configured so as to absorb the impact force applied to the inner tube (3).

The invention relates to a telescopic steering engine assembly and a steering system, and relates to the technical field of vehicle steering engines. A telescopic steering gear assembly comprises an input gear and an output rack, the input rack is meshed with the output gear and can move in the axial direction under driving of the input gear, the telescopic steering gear assembly further comprises at least one telescopic pull rod, the telescopic pull rod is connected with the end of the output rack and can slide in the axial direction of the output rack, and the telescopic pull rod is connected with the end of the output rack and can slide in the axial direction of the output rack. A locking mechanism is installed at the end of the output rack and used for selectively locking or unlocking the telescopic pull rod and the output rack. A steering system comprises a wheel drive unit and a steering engine assembly, the telescopic pull rod is connected with a steering knuckle of the wheel drive unit, and the wheel drive unit is provided with a kingpin steering mechanism. The steering engine has the advantages that the movement stroke of the steering engine is controllable, and diversified steering modes can be flexibly switched.

This utility model discloses a mechanical steering gear for preventing abnormal noise. This utility model relates to the field of automotive parts technology. The mechanical steering gear for preventing abnormal noise includes a housing mechanism. The main body of the housing mechanism is a box structure with a one-way opening at the top. A positioning rod is fixedly connected inside the housing mechanism. The positioning rod is arranged longitudinally. This utility model effectively prevents dust from entering the interior through multiple sealing protections of components such as the housing mechanism, cover mechanism, insert plate assembly, plunger, and its sealing ring. This reduces wear caused by dust friction between the rack assembly and gear assembly, thereby reducing the possibility of abnormal noise. The reasonable design of components such as the positioning rod, connecting plate, and positioning pin ensures stable power transmission from the input shaft to the output rod, making tire steering reliable. On the other hand, the good sealing structure reduces component wear and extends the service life of the steering gear.

Steering device (1) for steering a vehicle, comprising: an extendable steering rod (2) comprising a first and a second coaxially aligned partial rod (6, 7), characterized in that the first partial rod (6) is at least partially hollow and the second partial rod (7) is arranged at least partially axially displaceable within the first partial rod (6), wherein the steering rod (2) can be coupled to each of its axial end faces (8, 9) with a wheel (24, 26) of the vehicle; a first non-self-locking actuator (3) configured to displace at least the first section rod (6) in the axial direction; and a second self-locking actuator (4) configured to displace the second section rod (7) relative to the first section rod (6) in an axial direction; and a locking device (5) which is designed to fix the first actuator (3) in a predetermined position.

The invention relates to a method for producing a tappet (2) for a steering device (1) of a motor vehicle, the guide section (11) of which is designed with a non-circular and / or polygonal contour (12) for sliding guidance in the longitudinal direction of a central longitudinal axis (13) of the tappet (2) and for preventing rotation about the central longitudinal axis (13) of the tappet (2), in that the guide section (11) is designed with a non-circular and / or polygonal contour (12). The contour (12) of the guide section (11) is produced in the provided blank by a single production step. In order to be able to achieve more diversified profiles when the profile (12) of the guide section (11) is produced by this single production step, the method is characterized in that the profile (12) of the guide section (11) is formed by semi-hot forming or cold roll forming.

A steering gear (100) and a vehicle. The steering gear comprises: a housing (1); a driving assembly (4); a movable member (2) and a rotary member (3), the movable member (2) being arranged on the housing (1), the movable member (2) being in transmission connection with the rotary member (3), and the driving assembly (4) being adapted to drive the rotary member (3) so as to cause the movable member (2) to move; a first bearing (21), the first bearing (21) being arranged between the movable member (2) and the housing (1); and a second bearing (31), the second bearing (31) being arranged between the rotary member (3) and the housing (1).

The steer-by-wire system may include: a first power pack including a first motor; a second power pack including a second motor; and a steering rack operably coupled to the first motor of the first power pack and the second motor of the second power pack, the steering rack configured to be linearly movable in response to rotation of at least one of the first motor and the second motor, a rotation ratio associated with the first motor and a rotation ratio associated with the second motor are different from each other. The steer-by-wire system may confirm the linear position of the steering rack using a cursor algorithm based on the position of the first motor and the position of the second motor.

The invention relates to a steering actuator (1) for a rear axle steering system of a motor vehicle, comprising a drive motor (10), a belt drive (20), a transmission (30), and a braking device (40), wherein the transmission (30) is configured to convert a rotary motion of the drive motor (10), which is fed into the transmission (30) via the belt drive (20), into a translational motion of a threaded spindle (31), wherein the belt drive (20) comprises a first pulley (21), a second pulley (22), and a belt (23) encircling them, wherein the braking device (40) is configured to brake the second pulley (22), and comprising a stationary housing (41) which at least partially accommodates at least one contact element (42), at least one electromagnet (43), and at least one spring element (44), wherein the at least one spring element (44) is configured toto apply a spring force to the at least one contact element (42) in order to decelerate the second pulley (22) in a de-energized state of the at least one electromagnet (43), wherein the at least one electromagnet (43) in an energized state is configured to displace the at least one contact element (42) against the spring force in order to release a rotation of the second pulley (22).

The utility model provides an intelligent inspection robot transmission system which comprises a steering engine assembly, a shock absorber assembly and a driving assembly, and a hub rotating support shaped like a Chinese character'wang 'is arranged between the driving assembly and the steering engine assembly and located on the front end side of the driving assembly. The shock absorber assembly is connected with the rear upper end of the hub rotating support shaped like the Chinese character'wang 'and the rear end side of the traveling assembly, a joint motor is adopted for a horizontal driving part of the steering engine assembly, and a servo motor is adopted for a front-back driving part of the traveling assembly. By adopting the mode that the joint motor controls the transmission system to steer and the spline is matched with and fixes the joint motor, steering integrated control is added, the transmission accuracy is improved, the risk that the joint motor is exposed and is prone to damage is reduced, the requirement for the space size of a chassis is reduced, the structure is more compact, and rapid mounting and dismounting are convenient; the steering engine assembly and the walking assembly are independently designed, so that the whole transmission system meets the national II-class anti-explosion requirement and the IP66 / 68 sealing grade requirement.

The utility model relates to the technical field of steering engines, in particular to a steering engine pressing block with an oil storage cavity, which comprises a pressing block body, an oil inlet arranged in the center of a boss at the upper end of the pressing block body, a central groove arranged in the center of an arc surface at the lower end of the pressing block body, and a plurality of oil outlets arranged on the arc surface at the lower end of the pressing block body. The pressing block body is internally provided with an oil storage cavity, the upper end of the oil storage cavity is communicated with the oil inlet, the lower portion of the oil storage cavity is divided into a plurality of oil distribution branches, the number of the oil distribution branches is the same as that of the oil outlets, and the end of each oil distribution branch is communicated with the corresponding oil outlet. Compared with the prior art, the oil storage cavity communicated with the oil inlet and the oil outlet is additionally arranged in the pressing block body, grease can be stored conveniently, meanwhile, the grease is evenly distributed on the contact face of the pressing block and a rack, the lubricating effect is better achieved, the friction characteristic between the pressing block and the rack is improved, the movement process of the rack is smoother, and the service life of the rack is prolonged. And pause in the movement process is avoided.

The invention relates to a steering gear (1) of an axle steering system of a motor vehicle, comprising an electric motor (2) coupled to the steering gear (1), which converts a rotary motion from a motor shaft (9) of the electric motor (2) into a linear, axial motion by means of a belt drive (4) and a threaded drive connected to an output shaft (3) of the steering gear (1), and the steering gear (1) comprises a belt drive (4) and, parallel and with backlash, a force-free rotating gear drive (5), wherein, after a backlash is bridged, triggered by a defect or failure of the belt drive (4), the drive is carried out via the gear drive (5).

A steering mechanism that steers a pair of front wheels (10) of an electric mobility vehicle, wherein the steering mechanism is capable of steering an inner wheel and an outer wheel such that a steering angle difference between an inner wheel steering angle and an outer wheel steering angle when the inner wheel steering angle is a second angle which is within a range of 90° or greater is at least five times the steering angle difference when the inner wheel steering angle is a first angle which is within a range of 40° to 45°, wherein the inner wheel steering angle is a steering angle of the inner wheel and the outer wheel steering angle is a steering angle of the outer wheel.

A cover for a worm wheel gear box for a steering system and an electric power steering system for a vehicle. The cover comprises a substantially disc or dome shaped cover body configured to cover an opening of the worm wheel gear box. The cover body includes an inner surface configured to face the worm wheel gear box and an opposite outer surface. The cover body includes a sealing portion formed on the inner surface and configured to sealingly engage an outer circumference of the opening of the worm wheel gear box. The cover body includes a first attachment means and a second attachment means for mounting the cover body to the worm wheel gear box. The first attachment means and the second attachment means are provided at substantially diametrically opposed positions of the cover body. The cover body includes a reinforcement structure reinforcing the cover body.

The invention discloses a high-integration driving unit with an active variable geometric positioning parameter function. The high-integration driving unit is mainly composed of a wheel assembly, a suspension system, a first actuator and a second actuator. The actuator is arranged on the upper control arm, so that the mechanical load borne by the actuating mechanism during working is effectively reduced. The interior of the actuator is driven by a self-locking mechanism, continuous energy consumption is not needed when positioning parameters are maintained, and the steady-state power consumption of the system is remarkably reduced. In the aspect of mechanism connection, through combined arrangement of kinematic pairs, accurate matching of the degree of freedom of movement of the mechanism is achieved, the problems of interference and movement uncertainty in the adjusting process are effectively solved, and the accuracy of action execution is ensured. The unit integrates the functions of steering, active variable camber, active variable kingpin caster angle and fault tolerance. Dynamic real-time adjustment of geometric parameters is achieved through the compact structural layout, the vehicle control limit and stability are improved, and meanwhile the space utilization rate and work reliability are extremely high.

The utility model discloses a novel distributed rear wheel steering actuating mechanism, which relates to the field of automobile steer-by-wire, aims to solve the problems of poor flexibility, safety redundancy and unreasonable spatial layout of the existing steering system, and adopts the technical scheme that the novel distributed rear wheel steering actuating mechanism comprises a main shell and a tail shell, the main shell is further provided with a motor controller assembly, and the motor controller assembly drives the ball screw assembly through a belt and a belt wheel. One end of the ball screw assembly corresponds to the position of the angle sensor body, and the other end of the ball screw assembly protrudes out of the main shell and is connected with the yoke; the main shell is further provided with an anti-overturning mechanism for limiting the ball screw assembly, distributed backward rotation is adopted, compared with centralized backward rotation, the distributed backward rotation has the larger steering freedom degree, the rear wheels can be independently controlled, the motor directly controls the wheels, the response speed is higher, the space utilization rate is high, and the distributed backward rotation mechanism is suitable for more complex and extreme road conditions.

The present application belongs to the technical field of vehicle steering, and particularly relates to a steering engine and a vehicle. The steering engine comprises a shell, a transmission assembly arranged in the shell, the transmission assembly comprising a movable member and a plurality of screw rods, the movable member being provided with a plurality of through screw holes, and each screw hole being provided with a corresponding screw rod, wherein one end of at least one screw rod extends out of the shell and is adapted to be in transmission connection with a driving mechanism to drive the movable member to move along the extension direction of the screw rod; and an output shaft arranged on the shell, the part of the output shaft in the shell being in engagement with the movable member and being adapted to rotate under the driving of the movable member. Through the technical scheme of the present application, the load capacity of the transmission assembly and the output torque of the output shaft can be increased by using one movable member in cooperation with a plurality of screw rods, the possibility of failure or failure in use is greatly reduced, a hydraulic power-assisted system is not required, the structure is relatively simple, the energy consumption is low, and the load requirement of medium and heavy vehicles can be met.

An electric vehicle is provided with: a drive device provided with an electric motor and a speed reducer that transmits rotation generated by the electric motor to a drive shaft; and a steering mechanism that controls a steering angle of the front wheel in accordance with an operation of the steering wheel. The battery is disposed between the driver's seat and the passenger seat across the front and back of the cab. The driving device is of a single-shaft structure and is arranged between the front wheels. The steering mechanism includes a transmission portion, a tie rod, an intermediate shaft, a kingpin, and a suspension arm. The tie rod is connected to the hub frame at a position forward of the kingpin relative to the vehicle. The intermediate shaft connects the steering wheel and the transmission unit through a side surface of the drive device in the vehicle width direction.