157 results about "Toe" patented technology

To provide a brake control method for a four-wheel independent steering vehicle capable of reducing a shock when stopping the vehicle so as to safely secure braking force.SOLUTION: There is disclosed a brake control method for a four-wheel independent steering vehicle. The method comprises the steps of: when the vehicle is decelerating in response to a braking operation by the driver of the vehicle, determining, by an ECU 10, whether or not a vehicle speed measured by a vehicle speed sensor 20 has become equal to or less than a predetermined value, for example; and when determining that the vehicle speed has become equal to or less than the predetermined value, reducing, by a brake system 30, braking force of each of four wheels of the vehicle; and causing, by the ECU 10, front wheels of four wheels to toe in or toe out by a predetermined angle with respect to respective tire angles of the respective four wheels during deceleration, of the vehicle, and rear wheels to toe out or toe in by a predetermined angle. These steps can reduce shock at a time of stopping the vehicle, as well as, safely secure the braking force by controlling the tire angles of the respective wheels.SELECTED DRAWING: Figure 1

Sensor assemblies and systems comprise a housing configured to accommodate an electrical sensor device therein, mechanically retain the same, and provide a protective surrounding thereto. The housing may include display indicia relating to some aspect of the sensor assembly. The electrical sensor device include electrical components useful for the purpose of monitoring and transmitting desired data relating to operating parameters / conditions of the dynamic article that the sensor assembly is attached with, e.g., a vehicle tire. The data is transmitted wirelessly from the electrical sensor device. The housing is removably attached with a retaining member that is also attached with the dynamic article. A receiver external from the dynamic article receives the data for the purpose of determine such operating parameter / or conditions, when the dynamic article is a vehicle tire, as tire tread depth, tire pressure, vehicle camber and toe alignment variations, and tire / vehicle location, which may be stored.

The invention provides a redundant braking method and system based on an automatic wheel intelligent traveling chassis, and belongs to the field of vehicle braking. When braking of a single wheel of the vehicle fails, braking force distribution is conducted on the remaining wheels, and when the braking strength is large, the stability of the vehicle is guaranteed through the driving four-wheel steering system. When the wheels on the two different sides fail to brake, the required braking force is averagely distributed, so that the braking force on the two sides is equal, and the stability of the vehicle is ensured. When two or three wheels on the same side fail to brake, the braking force is guaranteed through the remaining wheels, and the stability of the vehicle is guaranteed through the driving four-wheel steering system. When braking of the four wheels all fails, the front wheel toe-in angle and the rear wheel toe-in angle are increased, the side slip angle of a vehicle tire is changed, the lateral force of the tire is increased, the longitudinal force of the vehicle is provided through the lateral force of the wheels, the stability of the vehicle is guaranteed, and the vehicle is braked. The method can effectively cope with different vehicle failure conditions, coordinates braking steering and vehicle stability control, and prevents the vehicle from being out of control.

An over actuated system capable of controlling wheel parameters, such as speed (e.g., by torque and braking), steering angles, caster angles, camber angles, and toe angles, of wheels in an associated vehicle. The system may determine the associated vehicle is in a rollover state and adjust wheel parameters to prevent vehicle rollover. Additionally, the system may determine a driving state and dynamically adjust wheel parameters to optimize driving, including, for example, cornering and parking. Such a system may also dynamically detect wheel misalignment and provide alignment and / or corrective driving solutions. Further, by utilizing degenerate solutions for driving, the system may also estimate tire-surface parameterization data for various road surfaces and make such estimates available for other vehicles via a network.

The invention discloses a vehicle chassis comprehensive detection system and method based on a visual detection method. The system comprises a Bluetooth sensor and a signal receiver to realize wheel positioning, an inclination angle sensor and a weight measuring instrument compensate angle inclination and center-of-gravity shift caused by ground inclination, parameters of a wheel toe-in angle, a camber angle, a kingpin inclination angle and a kingpin caster angle in a static state of a vehicle are visually detected, and accurate wheel positioning parameters are obtained after correction and compensation. The system does not need frame type shooting, wheel positioning measurement can be independently completed, the system structure is simple, the equipment cost is remarkably reduced, complex environmental factors such as uneven ground and dynamic inclination of a vehicle can be effectively handled, a stable and accurate positioning solution is provided, and the system is widely applied to positioning of most wheels.

The invention belongs to the technical field of vehicle four-wheel positioning detection, and particularly relates to a vision-based four-wheel positioning real-time attitude detection device, system and method, and the specific method comprises the steps: carrying out the calibration of a coordinate system, defining the coordinate system of a calibration frame on a test platform, enabling each calibration plate on the calibration frame to correspond to one test device, and carrying out the calibration of the calibration frame; calibrating to obtain a conversion matrix; a vehicle is driven to a test platform, then wheels are driven to rotate, synchronous test equipment starts measurement, toe-in direction angles, inner and outer inclination angles and wheel centers of tires are finally calculated through camera image acquisition, calculation and coordinate conversion, and results of the four wheels are synchronously uploaded to a control storage terminal. And controlling the storage terminal to obtain result information at each moment through post-processing calculation, displaying the result information on an interface in real time and storing the result information in a database. According to the invention, the vehicle is not damaged, dynamic real-time measurement can be realized, and the result is more accurate.

A suspension unit for suspending a wheel and tire assembly from a vehicle frame includes a hanger, a control arm, a spindle assembly, a jounce spring, a rebound spring, a camber adjustment mechanism, and a toe adjustment mechanism. The spindle assembly is connected to an upper wall top surface of the control arm at an upper wall terminal end. The jounce spring is positioned between the upper wall top surface and a top wall bottom surface of the hanger. The rebound spring is positioned between a forward wall outer surface of the control arm and a front wall inner surface of the hanger. A mounting bolt connects the control arm to the hanger. The camber adjustment mechanism is configured to change a first position of a mounting bolt first end of the mounting bolt along a y-axis relative to a second position of a mounting bolt second end along the y-axis. The toe adjustment mechanism is configured to change a third position of the mounting bolt first end or the mounting bolt second end along an x-axis relative to a fourth position of an opposing mounting bolt end along the x-axis.

Method for adjusting a headlight (11) in a vehicle (10) having a wheel with a known toe angle, characterized by the following features: - a laser (13) is mounted in a holder on the hub of the wheel, - the recording is designed depending on the track angle in such a way that the laser (13) is directed parallel to the driving axis of the vehicle (10), - a light collecting box is aligned perpendicular to the laser (13) and thus parallel to the travel axis and - the headlight (11) is adjusted using the light collecting box.

The utility model relates to the technical field of automobile manufacturing, in particular to a device for controlling camber assembly errors of automobile front wheels, which comprises a brake attaching plate (1). One end of the brake attaching plate (1) is connected with a brake (2), and the other end of the brake attaching plate (1) is connected with a rotating arm (3); a shock absorber limiting plate assembly is arranged on the rotating arm (3); a shock absorber (4) is connected in the shock absorber limiting plate assembly; the brake attaching plate can achieve stable fixing of the brake. The shock absorber limiting plate assembly can achieve fixation of the shock absorber. The mounting positions of the rotating arm and the brake attaching plate can be adjusted; according to the device, the assembly position between the shock absorber and the brake can be adjusted and fixed, so that the assembly precision of front wheel camber can be ensured; and meanwhile, the device is simple in structure and use, and the production cost is greatly reduced.

The present invention provides a tire capable of suppressing uneven wear such as heel-toe wear. A tire has a tread portion (2). The tread portion (2) includes: a first shoulder land portion (11) including a first tread end (T1) and a first shoulder circumferential groove (6) adjacent to the first shoulder land portion (11) on the axially inner side of the tire and extending continuously in the tire circumferential direction. A plurality of first shoulder transverse grooves (16) are provided on the first shoulder land portion (11), extending from the first shoulder circumferential grooves (6) and traversing the first tread end (T1). The first shoulder transverse grooves (16) have a pair of first groove walls (17). A pair of first chamfered portions (18) are provided on the pair of first groove walls (17), extending from the first shoulder circumferential grooves (6) to a position beyond the first tread end (T1).

The invention relates to a method for the combined actuation of a plow brake and a drive / operation brake, in which a steered right wheel (108) and a steered left wheel (108) of the vehicle (100) are steered at opposite toe angles (110) in order to decelerate the vehicle (100) in the event of a low speed (106), and the steered right wheel (108) and the steered left wheel (108) are steered at opposite toe angles (110) in order to decelerate the vehicle (100) in the event of a low speed (106). In order to compensate for a pitching movement (122) of the vehicle caused by deceleration at least in proportion by means of a vertical movement (120) due to oppositely steered wheels (108).

System and method for a computer vision technique for contactless measurement of vehicle toe are disclosed herein. The method includes capturing with a stereo camera an image containing a vehicle's wheel, segmenting the image, determining a suitable circular component of the wheel and computing the angle of the wheel relative to the camera and, subsequently, to the body of the vehicle. The method includes repeating the process for a plurality of wheels and computing the toe angle of the vehicle based on the obtained results.

Pneumatic tire (1) that can be mounted on a predetermined rim tapered by 15°, wherein the pneumatic tire (1) comprises the following: a pair of bead sections (20) arranged on each side of a tire equatorial plane (CL) in a tire transverse direction; a tire bead core (21) provided in each pair of bead sections (20); a carcass (6) which is supported by the pair of tire bead cores (21), wherein the carcass (6) comprises a carcass body part (61) and a carcass refold section (62) formed by the carcass (6) which refolds back on the tire bead core (21); a steel cord reinforcement layer (35) arranged on an outer surface of the carcass (6) which is folded back on the tire bead core (21), and a bead rubber layer (K) wherein at least one section thereof is arranged between the carcass body part (61) and the carcass refolding section (62);wherein, when the pneumatic tire (1) is not mounted on the specified rim, a distance (A) from a second line segment (J) to a third line segment (F) is 4 mm to 8 mm, wherein a first line segment (D) passing through an outermost projection point of the tire bead core (21) in the transverse direction of the tire and parallel to a longest side of the tire bead core (21), a side (P) of a bead base section (26) closer to a bead heel (27), which is a section of the bead section that comes into contact with the specified rim, a curved line (G) of a tire outer surface (40), which is a section of the bead section that is arranged outwards in the transverse direction of the tire from the bead base section (26), a first intersection (H) of the side (P) and the curved line (G), the second line segment (J) passing through the first intersection (H) runs and is perpendicular to the first line segment (D), and the third PS:SI:hm ; Line segment (F) passing through the projection point (E) and perpendicular to the first line segment (D) are specified. wherein the ratio R2 / R1 is from 0.935 to 0.975, where R2 is a tire radius at a bead toe (28) of the bead base section (26) and R1 is a tire radius at the bead heel (27), and wherein the ratio R1 / R3 is from 0.985 to 0.995, where R3 is a tire radius at the tire bead core (21) and R1 is the tire radius at the bead heel (27).

The utility model relates to the technical field of toe guard strength testing equipment, and discloses elevator toe guard impact strength testing equipment, which comprises a supporting seat, a bearing plate and a strength tester main body, a rubber bump is fixedly arranged at the upper end of a shock pad, a buffer spring is fixedly arranged between a reinforcing frame and the bottom of the supporting seat, and the bearing plate is fixedly arranged on the supporting seat. According to the strength tester, the reinforcing frame is arranged at the bottom of the supporting seat, meanwhile, the shock pad is arranged between the supporting seat and the bearing plate, and the rubber convex blocks are uniformly distributed on the shock pad, so that part of vibration energy can be further effectively absorbed and dispersed; and finally, a screw block moves back and forth along the inner wall of a sliding rail, and meanwhile, a strength tester main body on a mounting seat is driven to horizontally move in the other direction, so that the strength tester main body can carry out strength testing on different parts of the toe guard, and the accuracy of detection data is improved.

The utility model relates to the technical field of road field all-terrain off-road vehicle tire structures, and discloses a road field all-terrain off-road vehicle tire structure which comprises a tire body and a reinforcing mechanism, the reinforcing mechanism comprises an airtight layer, a bead steel wire and a stretch-proof layer, the airtight layer is fixedly connected with a double-layer steel wire belt ply through a tire body cord fabric layer, and the double-layer steel wire belt ply is fixedly connected with the bead steel wire and the stretch-proof layer. By arranging the reinforcing mechanism, the strength of the ground contact surface of the tire body can be improved through the airtight layer, the tire body cord fabric layer, the double-layer steel wire belt ply and the covering primer layer, vibration between the tire shoulder and the road surface is reduced through the tire shoulder damping layer, and the tire bead steel wire is matched with the toe opening to prevent the inner tire from being abraded by the rim and prevent silt from entering the tire; meanwhile, the effect of sealing compressed gas can be achieved, damage caused by contact between the side face of the tire of the highway and field all-terrain off-road vehicle and hard objects on the road surface during driving is reduced through the stretch-proof layer, the high-temperature-resistant layer and the reinforcing layer on the two sides of the tread, and the service life of the highway and field all-terrain off-road vehicle is prolonged.

A tire disassembling machine includes a rotary cutting mechanism for cutting the tire sidewall and toe, a driving mechanism for driving the rotary cutting mechanism to move linearly, a pneumatic tensioning mechanism for tightening the tire toe, a rotary connecting rod mechanism, a sidewall clamping mechanism, a sidewall pushing mechanism and a toe pushing mechanism. Compared with the prior art, the present invention has the advantages of separating the tire top, sidewall and toe at one time.

The disclosure relates to the technical field of vehicles, and particularly provides a multi-link independent suspension for a vehicle that includes a subframe and a steering knuckle. In order to solve the problem of reduced adjustment efficiency caused by mutual restraining of linkages of an existing multi-link independent suspension when a camber angle is adjusted, the multi-link independent suspension includes a spring control arm that is configured to adjust a camber angle of a wheel center. The multi-link independent suspension also includes a front upper control arm and a rear upper control arm. A central axis of the front upper control arm intersects with a central axis of the rear upper control arm at a Q point, and the Q point has the same coordinate as the wheel center in an X direction; and a motion centerline between the front upper control arm and the rear upper control arm coincides with a projection of a central axis of the spring control arm on an XY plane, so that a movement of the spring control arm has no effect on an upper control arm system when the camber angle is being adjusted. The steering knuckle only rotates about an X axis so as to drive a tire to rotate about the X axis, so that a camber angle of the tire can be adjusted without changing a toe-in angle, thereby reducing the number of affected linkages and simplifying the adjustment in the camber angle of the tire.

The application provides a vehicle suspension adjustment control method, a vehicle suspension adjustment control system and a vehicle. The vehicle suspension adjustment control method comprises the following steps: obtaining a matching interval of toe angle and camber angle of a vehicle configured in advance, and a priority corresponding to the matching interval, the priority comprising a highest priority, a lowest priority and a plurality of intermediate priorities between the highest priority and the lowest priority; adjusting the toe angle and the camber angle according to the matching interval corresponding to the highest priority; if the toe angle and the camber angle cannot be adjusted to the matching interval corresponding to the highest priority, adjusting the toe angle and the camber angle according to the matching interval corresponding to the next priority of the highest priority; if the toe angle and the camber angle cannot be adjusted to the matching interval corresponding to the next priority of the highest priority, the priorities are sequentially deduced from high to low. According to the matching interval and the priority, the toe angle and the camber angle of the vehicle can be automatically adjusted, and the toe angle and the camber angle can be reasonably matched as much as possible, so that the performance of the vehicle can be improved.

The invention relates to the field of vehicles, in particular to a vehicle toe-in angle and camber angle adjusting method and related equipment. The method comprises the following steps: determining a first control arm and a second control arm from a plurality of candidate control arms; wherein the candidate control arm is used for adjusting a camber angle and a toe-in angle of a wheel; the adjusting slope of the first control arm is a positive value, the adjusting slope of the second control arm is a negative value, and the adjusting slope is the ratio of a camber angle change value caused by the length change of the control arms to a toe-in angle change value; measuring a toe-in angle value and a camber angle value of the wheel; establishing a coordinate system by taking the toe angle as a horizontal coordinate and the camber angle as a vertical coordinate, and dividing the coordinate system into a plurality of adjustment areas according to the adjustment slope of the first control arm and the adjustment slope of the second control arm; and adjusting the toe-in angle and the camber angle of the wheel by adjusting the first control arm and / or the second control arm according to the adjusting areas of the toe-in angle value and the camber angle value in the coordinate system.

To provide a pneumatic tire which suppresses increase in heel-and-toe wear while suppressing generation of shoulder drop wear.SOLUTION: A pneumatic tire 1 comprises: a shoulder land 20 of which at least a tire axil direction outer end is partitioned in a tire circumferential direction; a first recess 31 at a center in a tire circumferential direction of a shoulder outside surface 22; a second recess 32 of the shoulder outside surface 22 that is shallower than the first recess 31 on one side in the tire circumferential direction with respect to the first recess 31; and a third recess 33 of the shoulder outside surface 22 that is shallower than the first recess 31 on the other side in the tire circumferential direction with respect to the first recess 31. Outer diameter ends 31a, 32a, 33a of the first to third recesses 31, 32, 33 are positioned in a first tire radial direction range X1 up to 3.0 mm on a tire radial direction inner side from a chamfer 25 when the shoulder land 20 has the chamfer 25, or from the tire axial direction outer end of a shoulder ground plane 21 when the shoulder land 20 does not have a chamfer.SELECTED DRAWING: Figure 3

The utility model relates to the technical field of whole truck testing, and discloses a floating disc for truck positioning testing. Comprising a floating plate, and multiple sets of fixing supports are arranged below the floating plate; through the X-direction floating base, the Y-direction floating base with the sliding device and the floating plate with the Z-direction rotating support, the front axle, toe-in or camber angle adjustment is not affected by stress, the detection precision is ensured, and when the floating disc is not affected by stress in the adjustment process, the front axle, toe-in or camber angle adjustment is not affected by stress, and the detection precision is ensured. The actual state of the front axle, the toe-in or the camber angle of the truck can be reflected more accurately, so that technicians can know the performance of a suspension system and a steering system of the truck more accurately, and more targeted adjustment and optimization can be carried out.

An active wheel carrier system and method are provided. The active wheel carrier system includes, in one example, a constant velocity (CV) joint, a wheel hub coupled to the CV joint and including a set of hub bearings, a hub carrier inner race coupled to the set of bearings, a hub carrier outer race, multiple roller elements interposed between the hub carrier inner race and the hub carrier outer race, a control swivel coupled to the hub carrier inner race, a camber-angle drive configured to independently rotate the hub carrier inner race about a first axis, and a toe-angle drive configured to independently rotate the hub carrier inner race about a second axis that is distinct from the first axis.

Apparatuses and systems for monitoring wheel alignment and / or for controlling vehicle suspension settings to adjust alignment. Described herein are alignment monitoring apparatuses for determining wheel alignment (e.g., camber, castor and / or toe). Also described herein are alignment adjusting or control apparatuses for adjusting one or more of camber, caster and / or toe.

The invention discloses a vehicle, a control method, device and system of the vehicle, a storage medium and a controller, and the control method of the vehicle comprises the steps that in response to a braking request, whether the vehicle meets a braking stability function activation condition or not is judged according to the vehicle speed, the steering wheel rotating angle and the wheel speed of the vehicle; if yes, a first target toe-in angle and a second target toe-in angle are obtained according to the vehicle speed and the depth of a brake pedal of the vehicle, and the first target toe-in angle and the second target toe-in angle are equal in size and are symmetrical relative to the center line of the whole vehicle; and controlling a left rear wheel of the vehicle to rotate to the first target toe-in angle, and controlling a right rear wheel of the vehicle to rotate to the second target toe-in angle. According to the method, the stability of the vehicle in the linear braking direction can be enhanced, and tiny vibration and bumping on the road surface during braking can be reduced.

The utility model relates to a steering system (1) of a motor vehicle, in which a linear steering actuator (5) is hinged on a pair of steerable wheels (71, 72) of an axle (4) through two toe-in pull rods (61, 62) which are rigidly coupled along a control direction, in which a first wheel (71) is steered by a first toe-in pull rod (61) through movement along the control direction (B), and a second wheel (72) is steered by a second toe-in pull rod (62) through movement along the control direction (B). The second wheel (72) is steered by a second toe-in tie rod (62) by a movement in the actuation direction (B), the length of at least one toe-in tie rod (61, 62) being adjusted by means of a toe-in actuator (8) integrated into the toe-in tie rod (61, 62). In order to realize toe-in adjustment with lower cost and lower weight, the utility model provides that in order to carry out toe-in adjustment, a first wheel (71) is directly adjusted through a steering actuator (5), and a second wheel (72) is adjusted through the sum of the adjustment of the steering actuator (5) and the adjustment of a toe-in actuator (8) integrated into a second toe-in pull rod (62).

Counter-steering motor vehicle rear axle (1), in which, under the action of a lateral force (F) on a wheel (R) on the outside of the curve and fastened to a wheel carrier (3), a rotational movement of the wheel carrier (3) about a virtual axis (A) in the direction of a toe-in (γ) occurs, wherein the virtual axis (A), when projected onto a plane extending in the vehicle's longitudinal direction, is inclined at an angle (α) at ​​least in the direction of travel (FR), characterized in that the virtual axis (A) runs below a wheel center point (M) and has an intersection point (6) with a wheel contact plane (E), which, viewed in the direction of travel (FR), lies behind a wheel contact point (5), wherein the wheel carrier (3) is connected to an axle body (2) extending transversely to the vehicle's longitudinal direction, wherein the wheel carrier (3), in a view in the longitudinal extension of the axle body (2), is provided with at least one belt-like connection around the axle body (2) extending material thickening (30),which has at least two material weakenings (31a, 31b) transversely to its longitudinal extent, of which a front material weakening (31a) is higher than a rear material weakening (31b) when viewed in the direction of travel (FR) and measured from the wheel contact plane (E).

1. The name of the design product: eccentric rubber sleeve (automobile chassis). 2. The use of the design product: the design product is used to change the automobile swing arm by adjusting the eccentric cam in the rubber sleeve, so as to push the wheel to realize the change of the wheel camber angle or toe angle and other geometric angles. 3. The design points of the design product: in shape. 4. The picture or photo that best shows the design points: combination state diagram 1.

This invention relates to the field of steer-by-wire technology, and more particularly to a steer-by-wire control method and redundant braking device compatible with braking function. The control method includes the following steps: S1: Obtain vehicle current operating status information and braking demand information. S2: If the longitudinal braking force provided by the failed wheel does not meet the braking expectation. S3: Obtain the lateral force of the failed wheel based on the current wheel load, the previous moment's wheel angle of the failed wheel, and the tire slip angle information. S4: Solve for the minimum wheel angle of the failed wheel. S5: Construct an optimization objective function and set constraints to calculate the target wheel angles. S6: Send the target wheel angles to the steering actuators of each wheel to achieve toe-in braking control under braking failure conditions. The advantage of this invention is that it fully utilizes the four-wheel independent steering and large-angle steering capabilities of the corner module vehicle, reconstructs the vehicle's braking capability through steering control, and improves the system redundancy utilization rate.

The utility model provides a robot chassis which is applied to an anti-explosion robot and comprises a frame, a wheel assembly and a steering assembly. The hub motors are adopted to provide driving force and form the four wheels, the steering assemblies are arranged between the wheel assemblies and the frame, an independent suspension structure and the frame are designed in a relatively split mode, meanwhile, the frame is provided with the adjusting part, and the adjusting part is arranged on the frame. The adjusting part can adjust the relative position of the frame and the swing arm so as to adjust the toe-in angle or the camber angle of the hub motor. According to the robot chassis, the gravity center of the robot chassis can be lowered, the structure can be simplified, and the weight of the chassis can be reduced on the premise that the same passing capacity and function are guaranteed through the scheme that the independent suspension structure and the frame are relatively split. The toe-in angle or the camber angle of the hub motor is adjusted by adjusting the relative position of the frame and the swing arm through the adjusting part arranged on the frame, accurate positioning of four wheels is guaranteed more easily, and the machining cost and difficulty are greatly reduced.

The application discloses a matching method for camber and toe angle of a vehicle wheel, which comprises the influence of ground vertical reaction force on tire cornering characteristics when the wheel is cambered. When the wheel is cambered, an equivalent camber cornering force is applied to the tire in the direction opposite to the camber direction of the wheel. When the wheel is straightly driven, the wheel is cambered, but the tire cornering angle is zero because the wheel is constrained by the vehicle body. When the wheel is straightly driven and the camber angle is zero, the ground generates a lateral force on the wheel. When the toe angle is equal to the tire cornering angle caused by the camber, the lateral force can be eliminated. The ideal matching relationship between the camber angle and the toe angle of the wheel is derived based on the influence of the wheel camber on the tire cornering characteristics. The formula is simple in form, convenient to use, and contains various factors influencing the correct matching relationship between the camber angle and the toe angle of the wheel, and is more scientific and reasonable.