1616results about "Mechanical steering gears" patented technology

An electric power steering assembly comprises a housing with a cylindrical section, wherein an inner wall of the cylindrical section defines a first groove and a second groove extending in an axial direction, the first and second grooves having inwardly tapered walls. A ball screw is arranged in the housing, extending in the axial direction and defining a radially extending through-hole with a first and a second end. A ball nut is arranged in the housing and surrounds the ball screw and is configured to rotate with respect to the housing. A first anti-rotation pin is located in the first end of the through-hole, a second anti-rotation pin is located in the second end of the through-hole, and a spring is arranged between the anti-rotation pins.The spring is configured to pre-tension the first and second anti-rotation pins in a radially outward direction towards the first and second grooves, respectively.

An independent steering apparatus includes a wheel of a vehicle, a knuckle integrally fixed to the wheel, a steering driving part configured to generate steering driving force, a deceleration part connected to an output shaft of the steering driving part and configured to transmit the steering driving force, and a deceleration part housing having the deceleration part located therein. In particular, the steering driving part is integrally fixed to the deceleration part housing, and the deceleration part housing is integrally fixed to the knuckle. The steering driving force generated by the steering driving part is transmitted to the deceleration part housing through the deceleration part, thereby rotating the knuckle.

A foldable vehicle may include a chassis comprising a static support, a dynamic chassis frame that includes at least two substantially opposite frame parts and a folding mechanism for decreasing or increasing a distance between the at least two substantially opposite frame parts across a lateral axis of the vehicle between a folded state and an unfolded state; and a controller to control the folding mechanism.

The invention relates to a chassis structure of a vehicle based on corner modules and a control system, the chassis structure of the vehicle comprises the corner modules corresponding to four wheels of the vehicle respectively, in each corner module, a wheel side motor driving assembly is used for directly driving the wheel corresponding to the corner module, and the wheel side motor driving assembly is used for directly driving the wheel corresponding to the corner module. The 90-degree two-way steering execution system is used for driving wheels corresponding to the angle module to realize positive and negative 90-degree steering; the wheel side motor driving assembly and the 90-degree bidirectional steering execution system are separately arranged; the suspension and supporting structure is used for keeping geometric stability of the suspension when the wheels corresponding to the angle modules steer and buffering road impact. The electronic mechanical braking unit is used for achieving braking of wheels corresponding to the angle modules. In this way, synchronous control over steering, driving, vibration reduction and braking of the vehicle in different running modes can be achieved through cooperative work of the angle modules in the wheels of the vehicle, and a vehicle chassis has higher flexibility and more scene adaptability in the running process of the vehicle.

The steering angle module comprises a wheel mechanism, the wheel mechanism comprises a hub motor and a wheel assembly in transmission connection with the hub motor, the hub motor comprises a stator and a rotor arranged on the periphery of the stator, and the wheel assembly is fixedly connected with the rotor; the brake mechanism comprises an annular brake disc fixedly connected with the rotor and a brake caliper fixedly connected with the stator; the steering mechanism comprises a steering knuckle and a steering assembly, the lower portion of the steering knuckle is fixed to the stator, the upper end of the steering knuckle extends to the axial outer side of the wheel assembly and is in transmission connection with the steering assembly, and an included angle is formed between the steering axis of the steering assembly and the vertical direction; the suspension mechanism comprises an upper swing arm and a lower swing arm, one end of the upper swing arm is rotationally connected with the frame, the other end of the upper swing arm is spherically hinged to the upper end of the steering assembly, and one end of the lower swing arm is rotationally connected with the frame, and the other end of the lower swing arm is spherically hinged to the steering knuckle. According to the steering angle module and the steering system with the steering angle module, the flexibility of the vehicle can be improved, and the high-speed steering running stability and safety of the vehicle are improved.

The invention relates to a planetary gear (10) for a planetary transmission (1), wherein a gear ring (12) of the planetary gear (10) has such elasticity that the gear ring (12) of the planetary gear (10) is designed to be radially spring-loaded simultaneously by a ring gear (14) and a sun gear (16), wherein the gear ring (12) of the planetary gear (10) is designed to form a double-flank contact with the ring gear (14) and the sun gear (16) in response to the radial spring-loading. The invention further relates to a steering gear for a steering system of a motor vehicle.

The invention relates to the technical field of vehicles, and discloses a drive-by-wire steering gear, a steering control method and a vehicle, the drive-by-wire steering gear comprises a shell, a steering assembly, a self-locking assembly and a controller, the self-locking assembly is connected to the shell and arranged on the peripheral side of the steering assembly, and the self-locking assembly has a locking state and an unlocking state. During application, in the normal driving process, the self-locking assembly can be kept in the unlocking state, the steering assembly is driven to move and can drive the steering wheel to steer, if a fault occurs, the controller controls the self-locking assembly to be switched into the locking state according to a fault signal, and therefore the current position of the steering assembly is locked when the fault occurs; the problem that the steering wheel swings back and forth due to continuous movement of the steering assembly is prevented, and the stability and safety of the vehicle are improved.

An independent steering device for a vehicle wheel comprises: a steering knuckle provided with a first upper coupling portion and a second upper coupling portion at an upper portion and a lower coupling portion at a lower portion; a first actuator rotatably coupled to the first upper coupling portion; a second actuator positioned adjacent to the first actuator and rotatably coupled to the second upper coupling portion; and a lower link rotatably coupled to the lower coupling portion. The lower coupling portion may be disposed below the center of the steering knuckle between the first upper coupling portion and the second upper coupling portion.

The invention relates to a drive device (6) for a steering device (5) for steering a first steerable wheel (2) and a second steerable wheel (3) of a motor vehicle (1), which form a left wheel and a right wheel of the motor vehicle (1), - with a housing (7) for fastening the drive device (6) to the motor vehicle (1), - with a first steering rod (11) which can be coupled to the first steerable wheel (2) for steering the first steerable wheel (2) and which is axially adjustable in the housing (7) and arranged in a rotationally fixed manner with respect to the housing (7), - with a second steering rod (13) which can be coupled to the second steerable wheel (3) for steering the second steerable wheel (3), - with a main actuator (15) for axially adjusting the first steering rod (11) relative to the housing (7), which is arranged in a fixed position on the housing (7), - with a sliding sleeve (16) which is axially adjustable in the housing (7) and arranged in a rotationally fixed manner relative to the housing (7) and which is axially fixedly coupled to the first steering rod (11) and rotatably relative thereto, - with an additional actuator (41) for rotatingly adjusting the sliding sleeve (16) relative to the housing (7), which is arranged in a fixed position on the housing (7), - wherein the second handlebar (13) is coupled to the first handlebar (11) in a rotationally fixed manner and axially adjustable relative thereto and coaxially passes through the sliding sleeve (16) and is drive-coupled to the sliding sleeve (16) in such a way that a rotational adjustment of the sliding sleeve (16) relative to the housing (7) produces an axial adjustment of the second handlebar (13) relative to the sliding sleeve (16).

A spindle drive for a vehicle steering gear, including a spindle having an external thread and a spindle nut having an internal thread being guided on the external thread. One of the spindle and spindle nut is rotatable and produces a corresponding translational movement of the other. The other of the spindle and spindle nut is guided via a plain bearing along the axis of rotation relative to a fixed structural part. The plain bearing is formed between sliding surfaces of a first and second bearing part, the first being provided on the other of the spindle and spindle nut and the second being provided on the fixed structural part. One of the first and second bearing parts is designed as an elevation, the other being designed as a recess. The recess surrounds the elevation on both sides in a rotational direction.

A steer-by-wire system for a vehicle includes a rack moveable in an axial direction and defining a groove extending in the axial direction of the rack. The system also includes a housing surrounding at least a portion of the rack. The system further includes an anti-rotation device disposed proximate an outer surface of the rack at the mounting location of the rack and within the housing, the anti-rotation device comprising a bearing seated within the groove of the rack. The system yet further includes a delash bearing assembly in contact with the rack to radially bias the rack to a desired position.

This electric power steering device (20) comprises a motor (22B), a speed reducer (22C), and a steering gear box (22A). The steering gear box has an input shaft (61) and a first housing (41). The speed reducer has first to fourth gears (51-54), a second housing (42), and a third housing (43). The first gear is coupled to a motor shaft (22B1) and rotates about a first axis (O1), the second gear and the third gear are coaxially coupled and rotate about a second axis (O2), and the fourth gear is coupled to an axial end of the input shaft and rotates about a third axis (O3). The relative positions of the first axis (O1) and the third axis (O3) are determined by attaching the motor (22B) and the first housing (41) to the second housing (42) from the same attachment direction in the axial direction of the input shaft.

The embodiments relates to a steering control device and method. Specifically, a steering control device according to the embodiments may include a first steering control module receiving a steering angle of a steering wheel from a steering angle sensor, calculating a position of a rack corresponding to the steering angle, and transmitting the position of the rack to a road wheel actuator (RWA) and a second steering control module to which a control right for the first steering control module is transferred when the first steering control module is determined to have a failure.

The invention relates to the technical field of vehicle steering, and provides a steering system and a gap adjusting structure, and the gap adjusting structure comprises a structure body with a mounting hole, and an elastic piece and an elastic buffer piece which are arranged on the structure body. The mounting hole is used for mounting a rotating supporting piece arranged on the worm, the elastic piece and the elastic buffer piece are arranged in the mounting hole and abut against the rotating supporting piece, and under the elastic action of the elastic piece, the worm keeps meshed with the worm gear. According to the gap adjusting structure, the elastic piece and the buffer piece are arranged on the structure body, the elastic piece and the buffer piece abut against the rotating supporting piece, and under the elastic effect of the elastic piece, the worm keeps meshing with the worm gear, so that the elastic piece continuously exerts elastic force, and therefore the gap adjusting effect is achieved. Therefore, the worm and the worm gear can be always kept in an abutting state to keep a stable meshing relationship, and the clearance is compensated in real time, so that the operation reliability and accuracy of a steering system can be improved.

A front frame assembly for a motor vehicle includes a suspension attachment structure comprising an attachment portion fixable to a bodywork cell defining a passenger compartment of the motor vehicle, one or more attachment elements fixed with respect to the suspension attachment structure and configured to permit a coupling of a suspension of the motor vehicle to the attachment portion, and a steering box comprising a steering tie rod for steering a wheel hub of the motor vehicle, a tubular casing extending along a first straight axis, and a transmission element coupled to the steering tie rod and to the tubular casing in an axially movable manner along the first axis inside the casing, wherein the tubular casing is rigidly fixed to the suspension attachment structure.

The present embodiments may provide a steer-by-wire steering apparatus which enables a driver to use a function for controlling an automobile, such as automatic parking, lane keeping, driving assistance according to a road surface condition, steering-vibration damping, or autonomous driving control, to improve the driver's convenience, and allows removal of hydraulic pressure-related components to prevent consumption of engine power by the components and thus can satisfy the high power and rigidity required for a steering device of a commercial vehicle.

The utility model provides a mining dump truck steering mechanism which comprises a front axle steering assembly and a hydraulic system and further comprises a rear wheel steering assembly arranged on a rear axle, the rear wheel steering assembly comprises a rear steering knuckle and a rear steering driving mechanism, and the rear steering driving mechanism is hinged to the rear steering knuckle. The two ends of the rear axle are connected with the rear knuckle through a steering fork, and a transmission universal shaft in power connection with the rear axle driving shaft and the rear brake drum is arranged in the middle of the steering fork. The rear steering driving mechanism serves as a power source for steering of the rear wheels, the transmission universal shaft penetrating through one end of the steering fork and connected with the rear axle driving shaft through the spline is arranged in the middle of the steering fork, connected with the rear brake drum, of the rear axle, and the steering function is added while transmission is achieved. The rear steering driving mechanism is hinged to the rear steering knuckle, so that steering of the rear wheels is achieved instead of rotation of the rear axle, abrasion of the rear wheels during steering can be greatly reduced, and the service life of tires is prolonged.

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.

Steering wheel unit (1) for an electromechanical steering system of a motor vehicle (10), comprising: - a force generating means for applying a mechanical feedback force to a steering wheel (4) about a current steering and / or driving condition to the driver, characterized in that the force generating means comprises two steering shaft nuts (21a, 21b) arranged axially adjustably on an external threaded section of a steering wheel shaft (3), two flanges (22a, 22b), a first and a second elastic element (23a, 23b), wherein each of the steering shaft nuts (21a, 21b) engages with one of the flanges (22a, 22b), wherein the flanges (22a, 22b) are arranged axially adjustable around a first flange shaft (24a) and a second flange shaft (24b), and wherein the first elastic element (23a) is arranged on the first flange shaft (24a) and the second elastic element (23b) is arranged on the second flange shaft (24b), and the elastic elements (23a, 23b) are deformable by axial movement of the flanges (22a, 22b), and wherein the force generating means applies force to the steering wheel shaft (3) in such a way that with increasing adjustment of the steering wheel (4) deviating from straight-ahead travel, an increasing restoring force can be generated on the steering wheel (4) for feedback of a wheel angle-related steering state to the driver.

The invention relates to the field of vehicles, and provides a steering angle limiting assembly applied to steer-by-wire, a steer-by-wire system and a vehicle. The steering angle limiting assembly applied to the steer-by-wire comprises a connecting sleeve, at least one circular ring body and a fixing piece, wherein the periphery of the connecting sleeve is sequentially sleeved with the at least one circular ring body in the axial direction. The at least one circular ring body sequentially sleeves the periphery of the connecting sleeve in the axial direction, a clamping part is arranged at the first end of the connecting sleeve, a fixing piece is arranged at the second end of the connecting sleeve, and the fixing piece is provided with a limiting part. The first end face and the second end face, opposite in the axial direction, of each circular ring body are each provided with a protruding part formed in the axial direction in a protruding mode, the protruding part of the first end face is used for being in limiting fit with the clamping part or the protruding part on the second end face of one adjacent circular ring body in the circumferential direction, and the protruding part of the second end face is in limiting fit with the limiting part in the circumferential direction. Installation of the connecting sleeve and the rotating shaft and assembly of the connecting sleeve, the circular ring body and the fixing piece are all simple and easy to operate. The connecting sleeve, the circular ring body and the fixing piece are easy to machine and low in cost.

The utility model relates to the technical field of automobile steering, and discloses a multi-stage gear type all-electric power steering device which comprises a control module and a power steering module. The control module comprises at least two steering control units which are connected with each other through SPI (Serial Peripheral Interface) signals; the power-assisted steering module comprises a power-assisted motor, a gear transmission mechanism, a planetary gear mechanism, a worm and gear mechanism, a shell, an input shaft and an output shaft, the power-assisted motor is arranged on the shell, the gear transmission mechanism, the planetary gear mechanism and the worm and gear mechanism are arranged in the shell, and the power-assisted motor is in transmission connection with the gear transmission mechanism; the planetary gear mechanism is connected with the gear transmission mechanism, and the worm and gear mechanism is connected with the planetary gear mechanism. The multi-stage gear type all-electric power steering device solves the limitation of an existing electric power steering device in the application field of commercial vehicles, and the pure electric steering device which is efficient, energy-saving, light and convenient in steering and good in controllability can be provided for passenger and goods commercial vehicles.

The utility model discloses a worm gear and worm clearance compensation mechanism of an electric power steering system, which comprises a shell, a worm and a worm gear are arranged in the shell, the worm is meshed with the worm gear, a ring sleeve is arranged in one axial end of a worm mounting cavity, a cavity is arranged in the ring sleeve, and the worm gear and the worm gear are meshed with each other. One end of the worm extends into the cavity and is matched with the ring sleeve through a bearing arranged on the outer side of the worm in a sleeving mode, an installation hole is formed in the position, corresponding to the bearing, of the side wall of the ring sleeve in the radial direction, a hole cavity is formed in the position, corresponding to the installation hole, of the shell, an adjusting bolt arranged in the axial direction of the installation hole is installed in the hole cavity, and an ejector block is installed at the end of the adjusting bolt. The first end of the ejecting block penetrates through the hole cavity and the mounting hole to abut against the bearing, the block-shaped elastic body is arranged between the second end of the ejecting block and the adjusting bolt, the ejecting block is supported and ejected outwards by arranging the block-shaped elastic body supporting stably, and therefore the ejecting block cannot rebound to impact the adjusting bolt when subjected to large impact, and the service life of the ejecting block is prolonged. The problem that noise is generated under the extreme working condition is solved.

The invention provides a steering control device and a vehicle steering assembly. The steering control device comprises an inner rotor motor, a steering wheel, a display panel, a transmission shaft and a connecting bearing. The inner rotor motor comprises a motor rotating shaft, a central rotor and a stator, the central rotor sleeves the motor rotating shaft and is in transmission connection with the motor rotating shaft, and the stator sleeves the central rotor. And the transmission shaft is in transmission connection with the motor rotating shaft. The display panel is connected to the upper end of the motor rotating shaft through a connecting bearing, the steering wheel is in transmission connection with the center rotor, and the rotor and the steering wheel form a rotating assembly rotating relative to the stator. According to the technical scheme, it can be ensured that the display panel keeps the fixed orientation in the rotating process of the steering wheel, so that information readability and operation safety are improved.

A steering drive includes an electric motor with a motor shaft and a steering lever rotatable about a pivot axis. A first planetary stage has a first sun gear, first planet gears, a first ring gear, and a first planet carrier. A final planetary stage has a final sun gear, final planet gears, a final ring gear, and a final planet carrier. A force flow runs from the motor shaft to the first sun gear, and from the first sun gear via the first planet gears to the first planet carrier and to the first ring gear. The force flow runs via the final sun gear and via the final planet gears to the final ring gear, runs from the first ring gear and from the final ring gear to the steering lever, and runs via a first sun gear shaft from the electric motor to the first sun gear.

The utility model discloses a planet multiple steering mechanism which comprises a gearbox body provided with an output shaft, a planet carrier and a planet wheel, an inner gear ring and an outer gear ring are arranged on the outer wall of the gearbox body, and the inner gear ring and the outer gear ring drive the output shaft to rotate and output torque. A first wet clutch bag capable of locking the planet carrier and the output shaft and a second wet clutch bag capable of fixing the planet carrier are arranged in the gearbox body. The rear end of the gearbox body is provided with a lubricating oil port used for injecting oil into the first wet clutch pack and the second wet clutch pack, a first high-pressure oil hole used for injecting oil into the first piston corresponding to the first wet clutch pack and a second high-pressure oil hole used for injecting oil into the second piston corresponding to the second wet clutch pack. The driving method comprises a two-drive mode, a non-multiple four-drive mode and a multiple four-drive mode and can be used for a tractor gearbox and a tractor steering drive axle, front wheel multiple is provided when a tractor steers, and small-radius steering is achieved.

A driving module for vehicle and a power supply structure are configured to include a driving system and a braking system provided with an in-wheel motor and an EMB-based brake inside a rim of a tire, a suspension system in which a suspension support shaft serves as a rotational central axis of the rim, and a steering system provided on an upper portion of the suspension system, in which the steering system includes a first steering member provided between the suspension system and a body, and a second steering member which is positioned at an inner side of the first steering member and of which lower portion is linked with the suspension system.

The invention relates to an automobile rear wheel steering gear with a stage locking mechanism, which is an executing mechanism for rear wheel steering, and belongs to the technical field of vehicle steering. The rear wheel steering gear with the step locking mechanism is compact in structure and ingenious in design, the transmission mechanism of the rear wheel steering gear adopts a high-efficiency ball nut assembly transmission scheme, the problems that an existing conventional rear wheel steering gear is low in transmission efficiency, prone to abrasion and heating and the like are solved, meanwhile, in order to make up the characteristic that the rear wheel steering gear cannot be mechanically self-locked, the step locking mechanism is additionally arranged, and the transmission efficiency is improved. After the steering gear is powered off, the shaft core of the electromagnet extends out to prevent the large belt wheel from rotating, so that the axial movement of the ball screw is inhibited, the rear wheels are in a locked state in the straight driving process of the vehicle, and the axial movement of the steering gear, deflection of the vehicle body and influence on driving safety caused by road impact are avoided. The transmission efficiency is improved, the driving safety is ensured, and the automobile rear wheel steering gear is a novel automobile rear wheel steering gear scheme with a stage locking mechanism.

The invention relates to the technical field of straddle carriers, and provides an all-wheel steering system and a straddle carrier. The all-wheel steering system comprises a main frame, a left advancing mechanism and a right advancing mechanism; the left advancing mechanism comprises a left frame, a left front wheel frame, a left rear wheel frame, a left front wheel and a left rear wheel; the right advancing mechanism comprises a right frame, a right front wheel frame, a right rear wheel frame, a right front wheel and a right rear wheel; the steering hydraulic system comprises a hydraulic steering gear, a left front hydraulic cylinder, a left rear hydraulic cylinder, a right front hydraulic cylinder and a right rear hydraulic cylinder, the left front hydraulic cylinder is in transmission connection with the left front wheel frame, the left rear hydraulic cylinder is in transmission connection with the left rear wheel frame, the right front hydraulic cylinder is in transmission connection with the right front wheel frame, and the right rear hydraulic cylinder is in transmission connection with the right rear wheel frame; the hydraulic steering gear is used for supplying and returning oil to the left front hydraulic cylinder, the left rear hydraulic cylinder, the right front hydraulic cylinder and the right rear hydraulic cylinder; the all-wheel steering system has the advantages that the cost is low, and the reliability is high.