1237results about "Mechanical steering gears" patented technology

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 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.

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.

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.

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.

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.

A vehicle suspension system includes a support member coupled to a vehicle body, a shock absorber connecting the support member and the vehicle body and absorbing the road surface impact, a steering section pivotably mounted on the support member, and an in-wheel motor section coupled to the steering section in an interworking manner and mounted on a wheel to provide driving force.

The utility model relates to the technical field of full-vector drive-by-wire chassis, in particular to a full-vector drive-by-wire chassis steering device. Comprising a dual-redundancy full-vector drive-by-wire steering gear and a dual-wishbone independent suspension mechanism, the dual-redundancy full-vector drive-by-wire steering gear comprises a steering gear body, the steering gear body is provided with a gear mechanism, a turbine worm mechanism, a rack mechanism and a rack output shaft tube, and the gear mechanism and the turbine worm mechanism are arranged in a parallel structure. The turbine worm mechanism comprises a turbine and a worm, and the gear mechanisms on the two sides are correspondingly connected with steering motors respectively; the double-wishbone independent suspension mechanism is of a bilateral symmetry structure and comprises an upper wishbone, a lower wishbone, a full vector steering knuckle, a shock absorber, a suspension parameter adjusting device, a balance rod and a steering knuckle arm. According to the utility model, the independent steering of each wheel at a low speed can be ensured, and the stability, the safety and the reliability of the vehicle during high-speed driving can also be ensured.

The rear wheel electric power steering gear assembly comprises a shell, a linear reciprocating motion mechanism and an electric drive assembly, a first containing cavity and a second containing cavity are formed in the shell, and the first containing cavity is formed in the first direction and externally penetrates through the first containing cavity to form two shaft holes; the second accommodating cavity is annularly arranged and communicated with the circumferential direction of the first accommodating cavity; the linear reciprocating motion mechanism comprises a nut, a rolling bearing assembly, a threaded rod and two transmission shafts, and the two transmission shafts are slidably connected to the two shaft holes respectively; the nut is supported in the second containing cavity through the rolling bearing assembly. The threaded rod penetrates through the first containing cavity and the second containing cavity, one end of the threaded rod is connected with a transmission shaft, and the other end of the threaded rod penetrates through the nut and is connected with the other transmission shaft. The threaded rod is in threaded engagement with the nut, and the thread is configured to be a trapezoidal thread; the driving end of the electric driving assembly extends into the second containing cavity from the outside of the shell to be in transmission connection with the nut so as to drive the nut to rotate forwards or backwards. According to the invention, steering assistance can be provided for the rear wheels, and mechanical self-locking is realized.

Steer-by-wire steering system for a motor vehicle, comprising a housing (22, 122), a spindle (24, 124) with an external thread and a spindle nut (150) with an internal thread which is rotatably mounted in the housing (22, 122) in a fixed manner, wherein the external thread and the internal thread form a movement thread for the axial displacement of the spindle (24, 124) relative to the housing (22, 122) when the spindle nut (150) is rotated, wherein the spindle (24, 124) is mounted in an axially sliding manner relative to the housing (22, 122) at least indirectly by means of a bearing sleeve (170) at least in the region of one of its ends (124e). The invention is characterized in that a rigid bearing relative to the housing (22, 122) is provided by means of a first plain bearing (180) and a flexible bearing is provided by means of at least one further plain bearing (185), wherein the further plain bearing (185) is arranged between the first plain bearing (180) and the spindle nut (150) and has a lower radial rigidity than the first plain bearing (180).

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 provides a steering system and an electric vehicle, and is applied to the technical field of electric vehicles. The steering system comprises a steering motor, a transmission mechanism, a lead screw, a steering controller and an angle sensor, a motor shaft of the steering motor is in transmission connection with the transmission mechanism, the steering motor is used for driving the lead screw to drive wheels of the electric vehicle to steer after the rotating speed is reduced through the transmission mechanism, and the transmission mechanism comprises a plurality of gears. The multiple gears comprise an input gear and an output gear, the input gear is in transmission connection with the motor shaft, the lead screw is sleeved with the output gear, the output gear is in transmission connection with the lead screw, and the angle sensor is used for detecting the rotation angle of the output gear; an angle signal from the angle sensor is received, and the rotating speed or torque output by the steering motor is controlled according to the rotating angle, indicated by the angle signal, of the output gear. Therefore, the control precision of the steering system is improved.

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.