287 results about "Tire rotation" patented technology

This tire state estimation method includes the following. (1) Disposing, on the inner side of a tire, at least one power generator that generates voltage in response to deformation of the tire. (2) Acquiring measurement data in a time series obtained by measuring, while the tire is rotating, the voltage and / or a physical quantity corresponding to the voltage. (3) Identifying a peak that repeatedly appears in the measurement data. (4) Identifying a value of the peak and / or an interval of the peak. (5) Estimating the state of the tire on the basis of the identified value and / or the identified interval. The power generator is provided with a first member and a second member. The first member and the second member are configured such that one is positively charged and the other is negatively charged in accordance with pressure applied to the first member and the second member.

A tire lock system prevents the movement of a trailer or vehicle once attached. A clamshell-style arms are attached to the inside and outside of a tire. Spikes on the arms are placed so that if the tire is rotated the spikes puncture the tire. The arms are reinforced and strengthen to prevent cutting, pulling, removal, or damage to the arms. The arms are held in place by a lock that is unique to each so that removal requires a special tool.

The invention belongs to the field of intelligent driving vehicle dynamics control, and discloses a three-axis vehicle fault-tolerant trajectory tracking method based on infinite time domain model predictive control, and the method comprises the steps: obtaining the current state feedback of a vehicle chassis in real time; acquiring the coordinate position of the current vehicle in real time; the method comprises the following steps: reading the speed and acceleration of a vehicle in an east-north-sky coordinate system through vehicle-mounted CAN (Controller Area Network) communication by utilizing differential positioning service fusing IMU (Inertial Measurement Unit) and GPS (Global Positioning System) of inertial navigation Modeling a vehicle dynamics model; establishing a tracking error model; establishing an optimization solution problem of steady-state reference; the generation of the reference quantity is described as an optimization solution problem; designing a trajectory tracking controller; the steering actuator controls output; the control quantity is obtained through the MPC optimization problem constructed in the sixth step, and the control quantity is the tire turning angle and is sent to a vehicle chassis through a CAN signal. According to the method, the potential relation can be mined, so that effective mapping to fault data is realized.

The invention relates to the technical field of steer-by-wire, in particular to a high-precision steer-by-wire mechanism of a composite mobile robot and a steering method thereof, the steering mechanism comprises a steering structure and a vehicle-mounted controller, and the steering structure comprises a left wheel set mechanism, a right wheel set mechanism and a steering mechanism. And the vehicle-mounted controller calculates the difference between the actual tire rotation angle and the theoretical rotation angle, and the optimized speed data processed by the optimization algorithm is fed back to the left wheel set mechanism, the right wheel set mechanism and the steering mechanism. By measuring the speed difference of the rear wheels, the actual steering angle of the wheels and the theoretical steering angle of the steering motor are calculated according to the mechanical characteristics of the steering system; a steering angle compensation mechanism and a wheel speed compensation mechanism are introduced, and the wheel speed and angle errors occurring in the steering process can be optimized through an algorithm; the dynamic errors are adjusted in real time through a motion compensation control algorithm, it is ensured that the speeds of the four wheels are accurately matched with the turning radius, and the precision of the steering process and the control stability of the vehicle are remarkably improved through the method.

The utility model discloses a tire burst device for automobile detection, and particularly relates to the technical field of tire burst devices, the tire burst device comprises a workbench, the rear part of the upper end of the workbench is fixedly connected with a feeding assembly, the middle part of the upper end of the workbench is slidably connected with a clamping device, and the right part of the clamping device is fixedly connected with a motor; a blasting assembly is slidably connected to the front portion of the upper end of the workbench. According to the tire burst device for automobile detection, the tire can be rolled to the lower portion of the clamping device in cooperation with the feeding assembly in the tire mounting process, the labor force of workers can be reduced, the carrying weight is reduced, similarly, the tires are rolled down through the feeding assembly in the tire discharging process, the carrying pressure of the workers is reduced, and the working efficiency is improved. In the experiment process, the device can be matched with a clamping device to drive the tire to rotate, the state of the tire in the driving process is simulated, the device can be matched with a motor to control the rotating speed of the tire, and therefore the state that the tire is exploded at different speeds is simulated, and the experiment range is expanded.

The invention belongs to the technical field of tire production equipment, and relates to an automatic tire trimmer which comprises a trimmer body, a tire feeding device is arranged on the tire feeding side of the trimmer body, a tire discharging device is arranged on the tire discharging side of the trimmer body, and the tire feeding device comprises a tire feeding frame and a tire clamping centering mechanism installed on the tire feeding frame. A tire horizontally conveyed by the conveying line enters the tire feeding device and then is adjusted to be in a vertical state, the tire clamping centering mechanism adjusts the center of the tire in the width direction to coincide with the center of the tire feeding side of the trimmer body, and a tire rotation driving assembly is further installed on the tire feeding frame. The product is reasonable and ingenious in structure, and the production efficiency and the effect of removing the adhesive edges of the adhesive tape are better; when the device is used, the device is better in adaptability to the actual situation on site, the in-out direction and the in-out height of the tire can be rapidly adapted by adjusting the installation position of the device, the equipment production period and the factory downtime can be effectively shortened, and economic benefits are effectively increased.

A method for determining tread remaining on a tire is provided in which first and second speed data of the vehicle is obtained, the second speed data being derived in part from measurement of a frequency of rotation of the tire. The first speed data is filtered to obtain filtered first speed data that is extracted over a first predefined speed limit, and the second speed data is filtered such that filtered second speed data is extracted over a second predefined speed limit. A ratio using the filtered first speed data and the filtered second speed data is calculated. Further, the method involves comparing the ratio to a tire model that links ratio to tread remaining in order to determine the tread remaining on the tire.

The invention relates to the technical field of vehicle illumination, in particular to a curve illumination configuration method, which comprises the following steps of: setting a relationship between a steering wheel rotation angle and a tire rotation angle, a motor extension (or shortening) amount and information of an illumination system in a parameter configuration table; the parameter configuration table downloaded in the controller is read, and the position of the lamp bead with the highest brightness in the lighting system is regulated and controlled according to the relation between the steering wheel rotation angle and the tire rotation angle. According to the method, different vehicle types are adapted to realize curve illumination configuration by only modifying the parameter configuration table, so that the development cycle and the time and labor cost of a project are greatly reduced.

The utility model discloses an angle module for traction and steering of a wheeled robot, which relates to the technical field of robot running parts, and comprises a vehicle body bracket and tires at four corner ends, a mounting shell is arranged above the tires, an angle module is arranged on the side of the tires, and the angle module comprises a traction module and a steering module. A traction motor in the traction module is connected with a traction rotating shaft through a speed reducer, a driving shaft and other parts to drive tires to rotate, and the axis of the traction driving shaft is coplanar with tire landing points; the steering module achieves steering through a steering motor and other components. The vehicle body support comprises a central framework, a bridge frame and modular bridges, one modular bridge is connected with the weeding module, and the other modular bridge is provided with a self-adaptive suspension and a suspension optical axis. The angle module solves the problems of power transmission, steering performance, structural stability and the like of an existing angle module, and has the advantages of being efficient, flexible, stable, universal, good in environmental adaptability and the like.

The invention relates to a method for adjusting an electronic sensor unit (10) in a vehicle tire (12) using an electronic data processing device, wherein the vehicle tire (12) comprises an electronic sensor unit (10) arranged below the tread on the inner layer (14) of the tire, comprising: i) an acceleration sensor, and ii) an electronic filter unit, with at least one cutoff frequency, comprising the method steps: a1) determining radius information of the sensor unit (10) during the rotation of the vehicle tire (12) using an electronic data processing device, wherein the radius information is the distance of the sensor unit (10) from the axis of rotation of the vehicle tire (12) in the radial direction,and b1) changing the cutoff frequency of the electronic filter unit as a function of the radius information using the electronic data processing device, and additionally or alternatively the process steps: a2) determining speed information during the rotation of the vehicle tire (12) using an electronic data processing device, wherein the speed information is the rotational speed of the vehicle tire, and b2) changing the cutoff frequency of the electronic filter unit as a function of the speed information using the electronic data processing device.

The invention discloses a distributed electrically-driven tire rotation energy collector in the field of energy collection devices, which comprises a mounting plate, one end face of the mounting plate is concavely provided with a mounting groove, and the center position of the mounting plate is provided with a shaft hole for an automobile shaft rod to pass through; the electromagnetic assemblies are embedded in the positions, on the outer side of the mounting groove, of the mounting plate in a divergent mode, and buffering pieces are arranged at the head ends and the tail ends of the electromagnetic assemblies; the piezoelectric assembly is arranged at the tail end of the electromagnetic assembly and the inner wall of the mounting groove; the loading cam is arranged in the mounting groove and fixedly connected to the automobile shaft rod, and a permanent magnet which is in homopolar repulsion with the electromagnetic assembly is arranged at the circle center end of the loading cam; the acquisition circuit module is electrically connected with the electromagnetic assembly and the piezoelectric assembly; the energy collection device has the beneficial effects that by arranging the sandwich type piezoelectric assembly and the electromagnetic assembly, three times of energy collection can be completed in one-time compression of the loading cam, the energy collection efficiency is greatly improved, the structure is compact, and the manufacturing cost is low.

A tire for running on rough terrain for which an intended tire rotational direction is specified, and which comprises a tread portion provided with crown blocks disposed on the tire equator. Each of the crown blocks comprises a V-shaped crown block main portion which bends convexly toward a circumferential direction opposite to the intended tire rotation direction, and only two crown fin portions projecting from the crown block main portion toward the above-said circumferential direction opposite to the intended tire rotation direction.

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 discloses a tire rotating speed control method, system and equipment of an electric boom and a medium, and belongs to the technical field of engineering machinery. The electric arm vehicle comprises a steering structure, a plurality of tires and a plurality of walking motors, the steering structure comprises a left steering seat, a right steering seat, a steering axle and a steering pull rod, the tires correspond to the walking motors one to one, and the tire rotating speed control method of the electric arm vehicle comprises the steps that the current steering angle of the electric arm vehicle is determined; generating motor rotating speed control information according to the relation between the current steering angle and the motor rotating speed; and controlling the walking motor to drive the tire to rotate according to the motor rotating speed control information. The tire rotating speed of the electric boom can be reasonably controlled, and the safety risk is reduced.

To provide a tire simulation method and a tire simulation device which can shorten a computation time of a crack progress.SOLUTION: The tire simulation method includes tire model acquisition step ST01 which acquires a tire model for analyzing a rolling state of a tire, tire model deformation calculation step ST02 which calculates deformation of the tire model equivalent to one lap of tire rolling when the tire is grounded, tire part model acquisition step ST03 which acquires a tire part model for analyzing a part of the tire model, tire part model deformation calculation step ST04 which calculates deformation of the tire part model on the basis of the deformation of the tire model, crack progress model generation step ST07 which generates a crack progress model which defines a base point of the crack on the tire part model and crack progress analysis step ST08 which analyzes crack progress by calculating the deformation of the crack progress model on the basis of the deformation of the tire part model.SELECTED DRAWING: Figure 2

A method for controlling the rolling resistance of a running tyre includes: manufacturing a tyre, installing the tyre on a rim, mounting a wheel on a vehicle. The tyre is manufactured by obtaining an external profile of the tyre that is asymmetric with respect to a middle line plane of the tyre and configured to generate, between the tyre rotating in rectilinear running and the ground, a lateral conicity force, conferring to the tyre the asymmetric external profile. The asymmetric external profile is obtained so as to control a resulting lateral force exchanged between the ground and the tyre and to limit a rolling resistance of the tyre running on rectilinear trajectory.

The application discloses a kind of subway tunnel inspection robot integrated positioning method and system, servo motor encoder is installed on inspection robot, inertial sensor, camera, RFID label, RFID receiver is installed on both sides of each platform of subway tunnel, multiple adjacent setting distance line marks are evenly provided on the line between every two platforms of subway tunnel, and the method is as follows: real-time acquisition tire rotation number of inspection robot, robot motion parameter, the tunnel image of shooting and the RFID platform signal fed back when inspection robot passes through platform;Further, line mark information and the pose information of robot are calculated and acquired;According to RFID platform signal, tire rotation number, line mark information and pose information, the integrated positioning of inspection robot is carried out, and position and pose information are output.The present application realizes efficient, accurate, implementable centimeter-level error positioning to inspection robot by establishing fusion identification rule and integrated positioning method.

The present disclosure provides a sensor device for monitoring a tire including a sensor that is mounted inside a tire and measuring a pressure and temperature inside the tire and an acceleration according to tire rotation, a memory that stores pressure data, temperature data, and acceleration data measured by the sensor, a processor that varies a transmission period of at least one of the pressure data, the temperature data, and the acceleration data based on the acceleration data, and a transmitter that transmits at least one of the pressure data, the temperature data, and the acceleration data according to the transmission period.

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.

A method is provided of applying a sound-absorbing material to an inner cavity of a pneumatic tire using a strip of sound-absorbing material provided on one side with an adhesive layer covered with a protective lining. A grip member integral to a recovery drum grasps an initial part of the protective lining whilst the recovery drum is at a first side of an applicator roller. The recovery drum is moved from the first side to a second side of the applicator roller, opposite the first side, such as to partially wind the strip of material around the applicator roller. The applicator roller presses the strip of material against the inner cavity of the tire whilst the tire is rotated, and the recovery drum is rotated synchronously with the tire to wind the protective lining around the recovery drum, step-by-step, as the protective lining is separated from the strip of material.

The invention discloses a rotary clamping device for repairing a waste tire, and relates to the technical field of tire recycling and reusing, the rotary clamping device comprises a support table, a bottom supporting mechanism, a top pressing mechanism and a clamping mechanism; the bracket table is provided with a mounting platform; the bottom supporting mechanism comprises a bottom driver and two bottom rollers, and the rollers are rotationally arranged on the mounting platform; the top pressing mechanism comprises a support plate, a lifting plate, a lifter, a pressing wheel and a pressing wheel driver; the supporting plate is fixed to the installation platform, and the lifter is installed on the supporting plate and drives the lifting plate to be close to or away from the bottom supporting mechanism. The pressing wheel driver is fixed on the lifting plate and drives the lower pressing wheel to rotate; the clamping mechanism comprises a clamping driver, a first clamping rod group and a second clamping rod group; the clamping driver is installed on the supporting plate, the supporting plate is provided with a through hole, the free ends of the two clamping rod sets can penetrate through the hole to extend to the side close to the bottom roller, and the driver drives the two rod sets to be close to or away from each other in a tire seam allowance. The tire rotating stability and the working efficiency are improved, and the labor intensity is reduced.

The invention relates to the technical field of automobile steering, in particular to a rear wheel steering system which comprises a parallel shaft steering assembly and a coaxial steering assembly which are used for controlling the rotation angle of a tire, the parallel shaft steering assembly and the coaxial steering assembly each comprise a shell, a movable end and a fixed end, and the movable ends and the fixed ends are arranged at the two ends of the shells correspondingly. The fixed end is fixedly connected with one end of the shell, the movable end is installed on a rear wheel steering knuckle, the parallel shaft steering assembly further comprises a first pushing assembly, the coaxial steering assembly further comprises a second pushing assembly, and the first pushing assembly and the second pushing assembly are both used for driving the movable end to do linear motion so as to adjust the steering angle of the rear wheel. The two steering motors can be controlled respectively to achieve independent operation of tires, the function of stabilizing a vehicle body under different road conditions is achieved, the risk of drifting or out-of-control of the vehicle is reduced, the vehicle can make accurate direction adjustment more easily during high-speed driving, and maneuverability and responsiveness of the vehicle are improved.

Provided is a tire having improved durability during high-speed travel. A tire having a pair of bead sections each having a bead filler extending from a bead core to the outside in the tire radial direction, and a bead support layer disposed on the outside of the bead filler in the tire rotation axis direction, the bead support layer being composed of a rubber composition (B), the tire having an outer diameter (mm) of Dt and an outer diameter (mm) of Dt, the outer diameter (mm) of Dt being smaller than the outer diameter (mm) of Dt being smaller than the outer diameter (mm) of Dt, and the outer diameter (mm) of Dt being smaller than the outer diameter (mm) of Dt being smaller than the outer diameter (mm) of Dt. When the loss tangent of the rubber composition (B) at 70 DEG C is 70 DEG C tan [delta] (B), Dt and 70 DEG C tan [delta] (B) satisfy the following formulae: (1) 70 DEG C tan [delta] (B) * Dt < = 110.0; (2) Dt < = 600.

The present invention provides a tire having improved combined performance in fuel economy, new wet grip performance, and worn wet grip performance. A tire is provided, comprising at least a first rubber layer constituting a tread surface, a second rubber layer radially inwardly adjacent to the first rubber layer, and a third rubber layer radially inwardly adjacent to the second rubber layer. The third rubber layer has a lower complex elastic modulus at 30°C than the first and second rubber layers, and the first rubber layer has a higher tan delta at 30°C than the second and third rubber layers. The tread includes land portions separated by a plurality of circumferential grooves extending continuously in the tire circumferential direction. In a tire meridian cross-section containing the tire's rotational axis, at least one of the land portions includes the third rubber layer formed bilaterally asymmetrically with respect to a normal line passing through the tire's widthwise center.

The utility model relates to the technical field of reversing mechanisms, and discloses a reversing mechanism for a monorail transport vehicle, a first brake rod is arranged on the outer wall of one side of the top of a second brake rod, a traction rod is arranged on the outer wall of the bottom, away from the first brake rod, of the second brake rod, bolts are rotatably connected to the inner walls of the two sides of the second brake rod, and one bolt penetrates through the first brake rod. The other bolt penetrates through the second brake rod and the traction rod, the outer walls of the two bolts are in threaded connection with nuts, and the two nuts are located on the lower surface of the connecting frame and the lower surface of the traction rod respectively. Due to the arrangement of the brake rods and the traction rods, when the rotating rod rotates rightwards, the rotating rod drives the traction rod to rotate together, the traction rod drives the brake rods II connected to the two sides to rotate rightwards, the two brake rods II drive the brake rods I connected together to rotate when rotating, and the two brake rods I drive the two connecting rods to rotate through bolts. And the clamping rod connected with the two connecting rods drives the other two connecting rods and the tire to rotate.

The invention discloses an automobile tire air leakage fault practical training platform, and relates to the technical field of automobile tire teaching, the automobile tire air leakage fault practical training platform comprises a replacement assembly on which a plurality of different types of tires are placed, each tire comprises a hub, the hub is also provided with an air inlet valve and an air outlet, and the air leakage state of the tire is simulated by controlling the closing of the air outlet. The rotating assembly locks the tire and drives the tire to rotate, presses the tire in the rotating process, simulates the working state of the tire under load, and comprises a simulation assembly for simulating the running road condition of the tire, a plurality of groups of different belts are arranged on the simulation assembly, and the running road condition of the tire is simulated through contact between the belts and the tire; personnel can directly observe the air leakage phenomenon of the tire in different states, and the impression of the personnel on the air leakage fault of the tire is deepened.

A rolling probe unit for ultrasonic inspection of railway tracks utilizes a wheel assembly comprising a fluid-filled tire that rolls along the track. During inspection, an ultrasonic transducer transmits an ultrasonic beam through the fluid and tire into the underlying track. The beam, reflected from track defects, returns to the transducer for detection and analysis for subsequent maintenance. The wheel assembly also includes an anti-rotation baffle to reduce fluid rotation with the tire and a pressure regulator to control the fluid pressure within the tire at various speeds.

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 application discloses a multi-module fusion vehicle state estimation model and a control method thereof, relates to the technical field of vehicle engineering and intelligent vehicle control, and comprises a tire force estimation module, a vehicle pose estimation module, an adhesion coefficient calculation module, a slip rate calculation module, a road surface friction coefficient identification module and a yaw angular acceleration calculation module; the tire force estimation module acquires four-wheel speeds, four-wheel driving torques, four-wheel braking torques, a vehicle speed, longitudinal acceleration, lateral acceleration, vertical acceleration, yaw angular velocity, pitch angular velocity and roll angular velocity, performs tire rotation dynamics calculation and axle load transfer calculation, and obtains longitudinal forces and vertical forces of each wheel. The application adopts a layered module architecture and multi-parameter fusion calculation, realizes accurate estimation of vehicle states, optimizes calculation logic and constraint mechanisms in different scenes through a working condition self-adaptive strategy, and improves overall estimation accuracy, system stability and engineering adaptation capability.