79 results about "Tire rotation" patented technology

The toy car comprises a car frame, a car head and front tires, the front tires are rotationally connected with the car frame through pin shafts, the car head comprises an upper jaw part, a lower jaw part, a first transmission assembly, a second transmission assembly and a huff-puff assembly, the upper jaw part and the lower jaw part are rotationally connected with the car frame through pin shafts respectively, and the first transmission assembly and the second transmission assembly are rotationally connected with the car frame through pin shafts respectively. The first transmission assembly is used for controlling the lower jaw part to be opened and closed through rotation of the front tires, the second transmission assembly is used for controlling the upper jaw part to be opened and closed through rotation of the front tires, and the huff and puff assembly is located between the upper jaw part and the lower jaw part and used for huff and puff of the trolley. Through the synchronous transmission effect of the first gear, the second gear, the third gear, the transmission block and the transmission plate, the toy car can continuously and synchronously carry out handling of the trolley, and compared with a transmission handling toy, the functionality is higher, and the entertainment is higher.

The invention provides a tire appearance defect detection system and method, and relates to the technical field of industrial automatic detection. The method comprises the following steps: automatically guiding and centralizing a horizontal incoming tire into a vertical posture, centering and then accelerating conveying; guiding the tire to enable the tire to be accurately positioned at a detection station; the tire is inserted from the inner sides of an upper tire opening and a lower tire opening of the tire, clamped, lifted away, suspended and fixed, then the tire side is radially expanded to form an annular detection channel, and the tire is driven to rotate at a constant speed; image acquisition of the inner cavity and the outer surface is synchronously carried out in the tire rotation period; and releasing and pushing out the tire after the detection is completed. The system is formed by sequentially connecting a tire guide-in centering device, a transition mechanism, a detection station device, a tire expander, a tire inner / outer detection device and a push-out mechanism. The full-automatic tire appearance detection device realizes full automation of tire appearance detection from feeding, positioning, expansion, rotation, image acquisition to blanking, improves the production takt and the internal and external detection precision through an internal nondestructive clamping expansion and synchronous rotation detection technology, and realizes automatic tire detection.

The present invention provides a tire dimension measuring device and a tire dimension measuring system that can measure the tread radius of a tire with high precision. [Solution] A tire dimension measuring device 1. It includes a tire holder 2 for holding a tire T in a vertical position with the tire rotation axis Tc horizontal, and a non-contact displacement meter 3 for measuring at least the tread radius of the tire T held by the tire holder 2. The non-contact displacement meter 3 further includes a mover for moving the held tire in the tire radial direction and / or tire axial direction, and measures the tire outer diameter and / or tire total width.

The utility model provides extruding device of tire processing belongs to mechanical engineering technical field, including bearing mechanism, including bottom plate, fixed plate of fixed installation in bottom plate outer surface, material box of setting in bottom plate outer surface, and the material box intercommunication's discharge pipe, and the spray head of discharge pipe intercommunication, the fixed mechanism includes the fixed frame of fixed installation in bottom plate outer surface, sets up in fixed frame one side and is used for the orientation subassembly of tire positioning, and the drive subassembly of tire rotation. The utility model discloses through the mutual cooperation of orientation subassembly and drive subassembly, has realized the automatic positioning of different specifications tire, stable clamping and even rubberizing, the first motor cooperation thread bar and internal thread block in orientation subassembly, can automatically adjust the roller spacing, can adapt to a variety of tire size, and drive subassembly makes the rotation of limiting block through second motor, makes tire steady rotation, ensures the evenness of rubberizing and operation stability, has improved tire extruding efficiency and product quality.

The present disclosure generally relates to an apparatus for forming a foam layer structure onto an inner wall of a vehicle tire's body, comprising: a foaming machine (200) having a nozzle (210 or 210') for selectively discharging a foamable composite; a tire rotating device (100) having a base (110), a support (120) arranged relative to the base (110) to be selectively rotatable about a first rotational axis between the base (110) and the support (120), a bracket (130) arranged on the support (120) to be selectively rotatable about a second rotational axis between the support (120) and the bracket (130), and at least three claws (140) installed on the bracket (130) for releasably clamping a body of a vehicle tire (600) on the bracket (130) such that the central axis of the body of the vehicle tire (600) clamped by the claws (140) is coaxial with the second rotational axis, at least one of the tire rotating device (100) and the foaming machine (200) is movable to enable the nozzle (210 or 210') to be at least partially located in a hollow space surrounded by the body of the vehicle tire (600), wherein during and / or after application of the foamable composite on an inner wall of the body of the vehicle tire (600), the bracket (130) is driven to selectively rotate about the second rotational axis and / or the base (110) can be driven to selectively rotate about the first rotational axis, the first rotational axis is not coplanar with and at a right angle relative to the second rotational axis, and the foam layer structure is formed after the foamable composite is self-foamed and cured. The present disclosure also relates to a vehicle tire manufacturing system and a vehicle tire.

The application discloses an automatic speed measurement method based on a TPMS with a magnetometer and a tire pressure detection system. Single-axis magnetic field intensity located on a tire surface is sampled according to a preset sampling interval. A plurality of continuous peak points are obtained according to a sampling value and based on the same sampling interval. A tire rotation period is obtained based on the number of sampling points between the plurality of continuous peak points and the sampling interval, so as to calculate the speed of a current vehicle. The automatic speed measurement method can detect a motion state at different speeds, effectively avoids the problems of an accelerometer range and precision, has a lower cost than the accelerometer, and has a higher stability than the accelerometer.

The utility model provides a portable support frame for power transformation engineering construction, which relates to the technical field of power transformation engineering construction, and comprises known telegraph poles for line erection, two arc-shaped plates and a hanger plate, the two arc-shaped plates are respectively arranged on two adjacent telegraph poles, and the hanger plate is arranged on the two adjacent telegraph poles. The lifting plate is arranged between the two arc-shaped plates and used for lifting a cable, a clamping block is detachably arranged on one side of each arc-shaped plate, the clamping blocks coincide with the center axes of the arc-shaped plates, and a plurality of electric wheels in rolling connection with the surface of the telegraph pole are installed on the inner walls of the clamping blocks and the inner walls of the arc-shaped plates. Electric wheel tires in the arc-shaped plate and the clamping block rotate and roll along the surface of the telegraph pole, the arc-shaped plate and the clamping block are driven to climb to a certain height along the surface of the telegraph pole, an electric capstan at the bottom of an insertion block on the arc-shaped plate can be used for pulling and lifting a lifting plate, and cable supporting at any falling height is achieved through the lifting plate.

This provides a tire characteristic measurement method that can quickly measure the axial force when a tire crosses an obstacle at various speeds. [Solution] The tire characteristics measurement method includes: step S1 of mounting a tire T on a tire rotation shaft 4 of a tire testing machine 1 equipped with a drum 2 having a running surface S on which a first projection 3 is provided; acquisition step S2 of rotating the drum 2 continuously for multiple rotations to run the tire T on the running surface S and acquiring time-series data of the force acting on the tire rotation shaft 4 when the tire T crosses over the first projection 3 in each of the multiple rotations, wherein the rotation speed of the drum 2 when the tire T crosses over the first projection 3 is different in each rotation; and calculation step S3 of calculating force tire running speed series data based on the force time-series data.

The utility model discloses a flight power supply device for emergency rescue. The flight power supply device comprises a flight mechanism, a traveling mechanism and a power generation module, the flight mechanism comprises a propeller and a first power source for controlling the propeller to rotate, and the propeller is mounted at the top of the power generation module; the traveling mechanism comprises all-terrain tires and a second power source controlling the all-terrain tires to rotate, and the all-terrain tires are arranged at the bottom of the power generation module. According to the technical scheme, the flying mechanism is used for driving the traveling mechanism to fly, and the traveling mechanism can move on the ground, so that the power generation module can cross complex terrains to meet the moving requirement.

The invention provides a vehicle tire rotation angle estimation method. The method comprises the steps that the yaw angle rate of a vehicle is calculated according to combined navigation course information of the vehicle; calculating an absolute rotation angle of a vehicle tire based on a yaw angle rate of the vehicle through a vehicle kinematic model; performing gap processing on the initial encoder data of the vehicle to obtain target encoder data of the vehicle, calculating an initial encoder rate of the vehicle based on the target encoder data of the vehicle, and performing delay processing on the initial encoder rate of the vehicle to obtain a target encoder rate of the vehicle; estimating a second vehicle tire rotation angle through a Kalman filtering algorithm based on the absolute rotation angle of the vehicle tire and the target encoder rate of the vehicle; and according to the running speed of the vehicle and the actually measured turning angle of the vehicle, the first vehicle tire turning angle or the second vehicle tire turning angle is selected and output as the target vehicle tire turning angle. The accurate and high-stability vehicle tire rotation angle is obtained by combining the tire rotation angle calculated based on the course angular rate and the tire rotation angle calculated based on the encoder.

A motorized wheel assembly is provided herein. The motorized wheel assembly comprises an in-hub motor comprising a stator and a rotor. A shaft is connected to the stator of the in-hub motor. The motorized wheel assembly further comprises a hub, attached to and configured to rotate with the rotor. The hub is disposed about the shaft and the in-hub brake system. The wheel assembly further includes a tire disposed about the hub. The motorized wheel assembly further comprise an in-hub brake system positioned about the shaft. The in-hub brake system comprises a biasing system, an actuator plate, a brake plate, and a brake pad system. The biasing system is configured to bias the actuator plate to the engaged position to cause the brake pad system to apply a force to the brake plate to prevent rotation of the hub and the tire.

The present application relates to the technical field of vehicles, and discloses a motor torque zero-crossing control method and device, a vehicle, electronic equipment and a medium. The method controls the motor to sequentially output a first direction torque and a second direction torque when the vehicle is in a continuous high-speed sliding state, so that the gear moves on different sides of the teeth. The motor rotor angular velocity and the vehicle tire rotation angular velocity in this process are collected, the transmission system gap is determined, and the target torque gradient correction value is matched to determine the current torque zero-crossing gradient of the vehicle, thereby performing torque zero-crossing control on the motor of the vehicle. The current torque zero-crossing gradient is corrected during vehicle driving, and the determination and correction of the current torque zero-crossing gradient are personalized for each vehicle, thereby improving the adaptability of the current torque zero-crossing gradient, the smoothness of the power system output torque, and the user experience.

The application relates to a large-view-field tire full-circumferential groove depth measuring method based on line structured light, and relates to the field of tire pattern measurement. The application is aimed at solving the problems of low efficiency, great influence of human factors and incapability of automation of the existing tire pattern depth detection method. In the process of rotation of the measured tire, the application collects continuous line laser images on the surface of the tire, generates a depth map by using the line laser images, positions all main grooves on the surface of the measured tire by using the depth map, and calculates the depth of each main groove according to the position of each main groove. The large-view-field tire full-circumferential groove depth measuring method based on line structured light can automatically find the position of the tire and calculate the depth of the tire pattern by driving control of a visual sensor, can quickly find the position of the tire, and can calculate the depth of the main grooves of the tire full circle.

This utility model provides an anti-skid structure for a car tire cover, including a cover body and a friction band fixedly connected to the outer wall of the cover body. A restraint band is connected to the outer wall of the cover body, and a friction-increasing plate is connected to the inner wall of the cover body. Two to five sets of friction-increasing plates are evenly distributed along the inner wall of the cover body. Anti-skid components for increasing the friction between the cover body and the ground are connected to the outer wall of the friction-increasing plates. Friction-increasing components for preventing tire rotation are also connected to the outer wall of the cover body. Evenly distributed grooves are formed on the outer wall of the cover body, and cleaning components for preventing the accumulation of impurities in the grooves are connected to the sidewalls of the grooves. The friction-increasing plates facilitate improved fixation between the tire and the cover body, increasing vehicle safety during driving. The cleaning plates help prevent impurities from accumulating on the outside of the cover body, thus improving the anti-skid performance of the cover body.

AV passenger access systems and methods for providing access to an interior of a passenger pod or body of the AV that is otherwise connected to a power platform. As part of a passenger access operation, a surface of a slidable door of the passenger pod is brought into contact with a tire of the platform. The tire is then rotated by a motor, causing the door to slide or move between an opened position and a closed position. In some embodiments, one or more components of a suspension system of the AV is utilized to effect tire-to-door contact. In some embodiments, the passenger access systems and method of the present disclosure leverage safe exit architecture and strategies (and vice-versa), operating to move one or more of the slidable doors via wheel contact, but without unlocking the body from the platform.

An airless tire coupled to a rim is disclosed. The airless tire includes a contact portion that extends along the circumferential direction of the tire and has a predetermined width, at least a portion of which contacts the ground when the tire rotates, a coupling portion that is coupled to the rim, side portions that are formed extending from both sides of the contact portion along the tire surface to the coupling portion, and a plurality of side grooves that are arranged radially with respect to the center of rotation of the tire and are formed as recesses in the side portions. The airless tire is lightweight, has low rolling resistance, has excellent heat dissipation due to increased surface area, and can reduce air resistance by improving the airflow along the side of the tire during driving.

The invention discloses a test model device and a test method for the wear rate of a road soil matrix. The device comprises a model box, a motor, tires, a vertical rod, a soil storage device, a grid, a scraper blade, an overturning motor, a soil suction fan, a cross rod, an adjusting knob, a soil suction bag, a soil matrix model and a model bottom plate. The soil matrix model is composed of a frame and a filled and compacted soil body. The transverse rod and the vertical rod are used for fixing the tire and keeping the tire to run back and forth along a fixed track, the tire is driven by the motor to rotate, and the turning motor can enable the rotating device to advance along the surface of a soil foundation and continue to advance in the turning direction when encountering the edge of a model; and the soil suction fan is arranged at the top of the soil suction bag. The device can be used for carrying out abrasion tests under the conditions of various soil foundation projects and various friction device working conditions (tire rotating speeds and tire contact areas), fills the blank of domestic road soil foundation abrasion tests, does not need to depend on too much manpower, is relatively high in efficiency and precision, and has important field test significance.

The utility model relates to spraying device technical field discloses a kind of tire inner wall spraying device, including operation platform and carousel, the bottom of first motor is fixedly connected with threaded rod, one end of threaded rod is threadedly connected with threaded seat, the side of threaded seat is fixedly connected with connecting block, the one end of connecting block is fixedly connected with lifting rod, the bottom of lifting rod is fixedly connected with spray head, the bottom of operation platform is provided with second motor, the top of second motor is fixedly connected with rotating shaft, the top of rotating shaft is fixedly connected with first gear, one end of first gear is engagedly connected with second gear, by starting first motor and driving threaded rod rotation, threaded rod will drive threaded seat, connecting block, lifting rod and spray head to move downwards, make spray head aim at tire inner wall, second motor is started again, second motor will drive rotating shaft, first gear and second gear rotation, make carousel drive tire rotation at uniform speed, so that it is convenient for spray head to spray evenly on tire inner wall.

To provide a tire having improved durability during high-speed traveling.SOLUTION: A tire comprising a pair of bead portions, each of the bead portions comprising a bead filler extending from a bead core outward in a tire radial direction, and a bead support layer disposed outward of the bead filler in a tire rotational axis direction, the bead support layer being formed of a rubber composition (B), wherein Dt and 70 °C. tan δ (B) satisfy the following formula: 70 °C. tan δ (B) * Dt ≤ 110.0 (1) Dt ≤ 600 (2) SELECTED DRAWING: None

An AV includes at least one memory and at least one processor coupled to the memory, configured to execute the stored instructions to perform the following: receive inputs from one or more acoustic sensors positioned at one or more locations on the AV, with the sensors capturing audio signals associated with AV operation in its surrounding environment. The AV processes these inputs to identify audio signals generated by specific components of the AV. The AV processes the inputs to isolate distinct sound patterns to determine if they are indicative of an anomaly associated with a component failure. The AV analyzes these audio signals to detect periodic sound patterns related to tire rotation, assessing the frequency and amplitude of these patterns to identify a specific tire exhibiting an anomaly. In response to detecting a tire anomaly, the AV initiates a corrective action by the AV to address the detected issue.

The utility model discloses a vehicle stopping net which comprises a high-performance fiber braided rope net which comprises a first boundary line corresponding to the side, close to a vehicle body, of a wheel ground plane and a second boundary line corresponding to the side, away from the vehicle body, of the wheel ground plane. A first rope net area is defined by the first boundary line and the second boundary line; the resistance component is distributed in the first rope net area and connected with the high-performance fiber woven rope net; the deceleration device is used for assisting vehicle deceleration; the energy absorption parts are distributed near the second boundary line; the traction force absorbing device is used for absorbing the axial traction force borne by the high-performance fiber braided rope net after the wheel is locked; the anchoring parts are distributed on the edge of the high-performance fiber braided rope net; after the vehicle stopping net is released, the anchoring part is tightly attached to the wheel, the first rope net area of the high-performance fiber woven rope net wraps the ground contact face of the wheel, other areas are partially or completely hinged into an axle along with rotation of a tire, and the vehicle is forced to stop. And the flexible braking of the vehicle is realized.

Provided is a tire capable of having a reduced electric resistance while suppressing an increase in mass and an increase in fitting pressure. The length Lt between a tire central plane CL and an end 22a of a tie rubber 22 and the length Li between the tire central plane CL and an end 21a of an inner liner 21 satisfy the relationship Lt<Li. The end 21a of the inner liner 21 is located inward of an outermost part 11c of a bead core 11 in the tire width direction. The end 22a of the tie rubber 22 is located inward of a radially outermost part 11a of the bead core 11 in the tire radial direction. The distance Rtg of the end 22a of the tie rubber 22 and the distance Rrc of a rim cushion inside outermost part Rwi both from the tire rotation axis satisfy the relationship Rtg<Rrc. The relationship between a lap amount LAP [mm] between the tie rubber 22 and a rim cushion 30 and the thickness Gi [mm] of the inner liner 21 is in the range of 0.0075≤Gi / LAP≤1.5. The tie rubber 22 and the rim cushion 30 have a volume resistivity of less than 1×10^8 [Ω·cm].

The present invention ensures steering stability and reduces rolling resistance while suppressing any increase in electric resistance. The length Lt from a tire equatorial plane CL to an end part 22a of a tie rubber 22 along the periphery and the length Li from the tire equatorial plane CL to an end part 21a of an inner liner 21 satisfy the relationship Lt < Li. The distance Rtg of the end part 22a of the tie rubber 22 from the tire rotation axis, the distance Rf1 of a bead filler outside end part 14a, and the distance Rrc of a rim cushion outside outermost part Rwo satisfy the relationship Rf1 ≤ Rtg < Rrc. The tie rubber 22 has a volume resistivity of less than 1×10^8 (Ω•cm).

The invention relates to the technical field of automobile control, and discloses a four-wheel steering vehicle fault-tolerant control method, which comprises the following steps: constructing a vehicle two-degree-of-freedom dynamic model; real-time data in the vehicle running process are collected, and a vehicle state estimation value is obtained through an unscented Kalman algorithm; constructing a residual reference model to obtain a residual sequence, and determining a fault sensor by using the residual sequence; and the vehicle state estimation value is used as the input of a reinforcement learning model-free control algorithm, and tire rotation angle control in the vehicle operation process is adjusted in real time. According to the method, the vehicle kinetic equation is used as a network regular constraint term, the accuracy and reliability of residual calculation are remarkably improved, rapid and accurate fault positioning is achieved through matching analysis of the residual sequence and the preset fault vector table, meanwhile, rapid self-adaption and control law optimization of a dynamic environment are achieved through reinforcement learning without a model, and the method is suitable for large-scale popularization and application. And the fault-tolerant performance and the control stability of the system are improved.

The disclosure concerns a method for detecting detachment of a sensor mounted on an inner face or layer of a tire of a vehicle, comprising acquiring data related to at least one information item provided by said sensor, and detecting a detachment of the sensor based on the acquired data. In particular, the acquired data is related to radial acceleration outside tire's footprint or to tire footprint length defined as the ratio between footprint contact time and tire revolution time. If the acquired data is related to the radial acceleration outside tire's footprint, detecting includes detecting whether the sensor is attached to the inner face / layer of the tire or detached therefrom by comparing changes in radial acceleration sign with a predefined threshold. If the acquired data is related to the tire footprint length, detecting includes detecting based on the tire footprint length whether: the sensor is within its cupholder with the latter being detached from the inner face / layer of the tire, or the sensor is outside the cupholder and completely free, or the sensor is within the cupholder with the latter being properly attached to the inner face / layer of the tire.

To provide a device for measuring the depth of a tire rotation direction main groove (circumferential main groove) formed on a tread surface of a tire removed from a vehicle.SOLUTION: Line laser light 100 is irradiated to at least two different places of a tread surface of a tire 40, picked-up images of the line laser light 100 are respectively acquired, light cutting line coordinates being coordinates of the images of the line laser light 100 are detected about each of the picked-up images, groove depths formed on the tread surface are calculated from the respective light cutting line coordinates on the basis of a triangulation method, and the calculated groove depths are respectively determined as the depths of rotation direction grooves 41 with grooves whose rotation direction coordinates of the groove depths approximately coincide respectively regarded as the rotation direction main grooves 41.SELECTED DRAWING: Figure 3

The invention relates to the technical field of tire balance test benches, in particular to a multi-working-condition tire balance test bench which comprises a supporting column and a first base, the supporting column is rotationally installed on the first base, and a tire is installed at the front end of the supporting column; the device further comprises a driving device, a pressure device, a collection sensor, a second base, a barrel and an air pump, the collection sensor is installed between the first base and the supporting column, the first base is installed on the driving device, and the driving device is used for providing power for rotation of the supporting column and driving the first base to move and adjust. The cylinder is rotationally mounted on the second base, the air pump is mounted on the outer side wall of the second base, and the power input end of the air pump is concentrically connected with the cylinder; a balance test is carried out on a tire under load rotation, the linkage effect that the larger the tire rotation load is, the larger the extrusion force on the tire is, the real effect of the balance test for simulating extrusion deformation of the tire under the actual load bearing working condition is improved, and the comprehensiveness of the tire multi-working-condition test is improved.

The utility model discloses an inflatable polyurethane tire with a high-strength composite structure, which relates to the technical field of polyurethane tires and comprises a tire body, the tire body is divided into a tire tread part and a tire sidewall part, the tire sidewall part of the tire body is provided with support teeth which are uniformly distributed at intervals, the inner wall of the tire body is provided with a heat dissipation layer, and the heat dissipation layer is arranged on the tire tread part. The two sides of the heat dissipation layer penetrate through gaps of the supporting teeth to form heat dissipation teeth, the reinforcing layer is arranged between the heat dissipation layer and the tread part of the tire body, the tire body, the heat dissipation layer and the reinforcing layer are connected into a whole through the vulcanization technology, function division is achieved through a composite layered structure, the wear resistance of polyurethane materials is reserved, and the service life of the tire is prolonged. The heat-sensitive defect of the material is overcome through the synergistic effect of the heat dissipation layer and the reinforcing layer, a heat dissipation channel surrounding the tire in the circumferential direction is formed by the heat dissipation layer extending structure in the tire side area, and when the tire runs to generate heat, the heat is rapidly conducted to the outer side of the tire through the heat dissipation tooth part of the heat dissipation layer; and active heat dissipation is realized by matching with airflow generated by tire rotation.