1386results about "Vehicle tyre testing" patented technology

The invention discloses a tire wear diagnosis method, device and equipment and a storage medium, and the method comprises the steps: generating a tire wear calculation model based on obtained key factors affecting tire wear, wherein the key factors comprise vehicle driving mileage, historical driving road condition information, driving habits, vehicle tire pressure and four-wheel positioning information; and calculating a current tire wear coefficient according to the tire wear calculation model, and diagnosing tire wear by using the current tire wear coefficient. The abnormal condition of tire wear can be effectively identified, a terminal client is reminded of the tire wear state of the vehicle, and the use safety of the vehicle tire is ensured.

A disclosed leaky coaxial resonant sensor system and methods. In use, the system includes at least one split-ring resonator (SRR) embedded within a material of the component. The at least one SRR is formed from a composite material. Additionally, the at least one SRR is configured to resonate at a first frequency in response to an interrogation signal from a leaky coaxial cable antenna. In some aspects, each SRR may resonate at a first frequency in response to an electromagnetic ping when the composite material is in a first state, and may resonate at a second frequency in response to the electromagnetic ping when the composite material is in a second state. A resonant frequency of the composite material may be based on physical characteristics of the composite material.

A vehicle component balancing robot apparatus, system and method for on vehicle balancing of one or more of a tire, a wheel, bearings, brake components, and vehicle components that impart vibrations to the vehicle. The apparatus includes a frame arranged so as to connect with the vehicle. A robot of the apparatus moves relative to the frame, and is configured so that the move, relative to the frame, resolves a predetermined location of a tire-wheel assembly relative to a reference frame of the robot. The robot has at least one end effector arranged to interface the tire-wheel assembly and the robot moves the at least one end effector to other predetermined locations on a wheel rim of the tire-wheel assembly, determined based on resolution of the predetermined location of the tire-wheel assembly relative to the reference frame.

A vehicle component balancing robot apparatus, system and method for on vehicle balancing of one or more of a tire, a wheel, bearings, brake components, and vehicle components that impart vibrations to the vehicle. The apparatus includes a frame arranged so as to connect with the vehicle. A robot of the apparatus moves relative to the frame, and is configured so that the move, relative to the frame, resolves a predetermined location of a tire-wheel assembly relative to a reference frame of the robot. The robot has at least one end effector arranged to interface the tire-wheel assembly and the robot moves the at least one end effector to other predetermined locations on a wheel rim of the tire-wheel assembly, determined based on resolution of the predetermined location of the tire-wheel assembly relative to the reference frame.

The invention discloses a tire performance testing method and device. The method comprises the following steps: acquiring the initial depth and the post-grinding depth of each pattern groove on the tread of a target tire before and after grinding, and the initial temperature and the post-grinding temperature of each pattern block before and after grinding; determining an initial groove depth uniformity parameter, an initial temperature uniformity parameter, an after-grinding groove depth uniformity parameter and an after-grinding temperature uniformity parameter of the tread of the target tire before and after grinding based on the parameters; according to the initial groove depth uniformity parameter, the initial temperature uniformity parameter, the ground groove depth uniformity parameter and the ground temperature uniformity parameter, whether grinding of the target tire is qualified or not is evaluated; and if the grinding is qualified, testing the performance of the ground target tire. The technical problem that the accuracy of the performance test result of the polished tire is poor as the wear condition of the tread cannot be really reflected only according to the depth of the pattern groove is solved.

An apparatus for measuring performance and contact characteristics between a vehicle test wheel (10) and a ground (20), comprising: a motorized test cart (100) configured to move at a specified speed along a guideway (30) attached to the ground (20); a support (200) for the test wheel (10); and a mechanism (300) mounted between the test cart and the support (200) and configured to hold the support so that the test wheel (10) can roll on the ground (20) with the movement of the test cart along the guideway (30); and allow a movement of the support (200) relative to the ground (20) so that the test wheel (10) can be raised relative to the ground (20) or lowered until it contacts the ground; a thrust actuator (310) configured to apply a thrust force (320) between the test cart (100) and the support (200) and cause the support (200) to move toward the ground (20) through the mechanism (300) and to keep the test wheel (10) in contact with the ground (20) so that the wheel exerts a contact force (220) against the ground (20). The mechanism (300) is mounted between the test cart (100) and the support (200) so that the support (200) is cantilevered from the test cart (100) and the test wheel (10) is external laterally from the test cart (100); said test cart (100) comprises transport wheels (110, 120) mounted to make direct contact with the ground without contacting the guideway (30) and on which the test cart (100) rests; the test cart comprises a plurality of sliding constraints (130,140) between the test cart (100) and the guideway (30) configured to counterbalance the test cart (100) relative to the guideway (30) during the application of the thrust force (320) by the thrust actuator (310) and to isolate the application of the contact force (11) from ground contact reactions of the transport wheels (110, 120).

The invention relates to the technical field of noise measurement systems, in particular to a noise measurement system for a new energy tire, which comprises a tire positioning and driving unit, a sensor unit, a data acquisition and synchronization unit, a data processing unit, a data analysis unit and a man-machine interaction and display unit, the tire positioning and driving unit simulates different loads, different speeds and different road conditions of a tire by using a rack type tire positioning device, and drives the tire to rotate by using a brushless mute motor, so that a high-speed rotating effect without introducing extra mechanical noise is realized; the sensor unit is arranged on the two sides of the tire and at the position close to the ground through an acoustic sensor free field type condenser microphone array, is fixed to the suspension support through an acceleration sensor and is used for collecting vibration signals; the running states of the tire under different loads, speeds and road conditions are accurately simulated, noise data of the tire under various actual working conditions are obtained, and the measurement result is closer to the real situation.

The utility model discloses an indoor tire road noise testing device, which comprises a sound insulation box body, a slope table, a tire driving system and a noise acquisition system, the sound insulation box body is of a closed structure. The slope table is arranged in the sound insulation box body, the slope table is provided with a slope adjusting device, the slope adjusting device is used for adjusting the slope angle of the slope table, and the slope of the slope table is used for placing a pavement test piece; the tire driving system comprises a driving assembly and a tire fixer, the tire fixer is rotatably mounted at the output end of the driving assembly, the tire fixer is arranged in the sound insulation box body and is used for mounting a test tire, and the driving assembly is used for driving the tire fixer to move to drive the test tire to impact the pavement test piece; the noise acquisition system is used for acquiring sound data in the sound insulation box body. The slope table is used for simulating the actual road surface condition, the noise condition of the designed road surface can be tested in the design stage, the actual effect is effectively guaranteed, and the problem that low-noise road surface design is difficult to verify in the design stage is solved.

The invention relates to the technical field of wheel performance testing, in particular to a laboratory testing method and system for representing the gripping performance of tire tread rubber on a wetland epoxy floor. According to the method, a thin water film of 10-100 microns is stably maintained on a representative epoxy substrate through online thickness measurement and closed-loop film control, a mu-slip rate curve is obtained at the slip rate of 0.1-10%, mu 0, mu max, delta mu and mu 10% are extracted and are subjected to in-situ fusion with British pendulum BPN under the same substrate and the same film thickness, and a wetland epoxy comprehensive grip index (WEGI) is formed. According to the method, the repeatability under the thin water film working condition and the comparability between laboratories are remarkably improved; embodiments show that the introduction of a small amount of LSBR and fine cutting grooves can synchronously improve [mu] max and BPN, while the repeatability of uncontrolled film, non-representative substrate or real vehicle test is poor. The method is suitable for rapid optimization of a new energy automobile tire tread formula.

Provided is a method, etc., for estimating uneven tire wear. This tire state estimation method involves: obtaining an image which includes both ends of the tread of a target tire, and captures said tread from the front in a manner such that said tread is continuous in a prescribed direction; inputting the obtained image into a trained first machine learning model; and deriving an output from the trained first machine learning model. Therein, the output of the trained first machine learning model corresponds to the estimation results for the uneven wear of the target tire.

The invention relates to the technical field of tire detection, in particular to a method for identifying abnormal vibration of a tire through color difference of an automobile tire tread, which comprises the following steps: generating a point cloud picture; generating a first tire surface height point cloud picture at the first rotating speed; generating a first visual point cloud picture and determining an abnormal vibration level; dividing detection intervals, wherein n detection point sets are configured in each detection interval; generating a second tire surface height point cloud picture at a second rotating speed; reducing the rotating speed of the tire at a preset rate, calculating a stability score, and judging whether the stability of the detection device meets requirements or not; and in response to the satisfaction, rendering the tire surface to generate a second visual point cloud picture, and determining an abnormal vibration level. According to the method, the height difference of the tire surface height at each detection point position is calculated, and the tire surface is rendered according to the height difference and the preset color matching mechanism, so that the vibration condition caused by the tire surface height can be intuitively and visually displayed.

A control device and a method for estimating a driving range for a vehicle. The method comprises, based on available driving energy for the vehicle, estimating distance to empty taking into account an estimated variation in rolling resistance of the vehicle, wherein said estimated variation in rolling resistance of the vehicle is determined using a predetermined transient rolling resistance model into which transient tire temperature effects on rolling resistance are incorporated.

The invention discloses a coating type puncture device for tire sealing performance testing, and relates to the technical field of tire testing, the coating type puncture device comprises a base, one side of the base is fixedly connected with a vertical plate, the upper surface of the base is fixedly provided with a mounting block, and the interior of the mounting block is rotatably connected with a driving shaft; one end of the driving shaft extends to the outer side of the mounting block and is fixedly connected with the output end of the driving motor, the other end of the driving shaft is provided with a test tire, the test tire is connected with the driving shaft through a locking piece, the test device further comprises a rotating mechanism and a moving mechanism, the rotating mechanism is arranged on the side, close to the vertical plate, of the test tire, and the moving mechanism is arranged on the vertical plate. And the moving mechanism is arranged above the test tire. The device can automatically puncture and pull out a nail, can accurately control the puncture position, depth and angle, and highly simulates the condition that a tire is punctured by a sharp object in actual driving, so that the test result is more suitable for a real scene, manual participation steps are reduced, and the test safety is enhanced.

A method for estimating lateral force includes receiving vehicle data. The vehicle includes a plurality of tires. The method further includes using a bicycle model to determine first lateral forces at each of the plurality of tires of the vehicle, using a double-track model to determine second lateral forces at each of the plurality of tires of the vehicle, fusing the first lateral forces determined using the bicycle model and the second lateral forces using the double-track model to determine third lateral forces at each of the plurality of tires of the vehicle, and controlling an actuator of the vehicle using the third lateral forces at each of the plurality of tires of the vehicle.

The invention relates to a tire static rigidity test bench, which comprises a bottom plate, a vertical lifting mechanism, a rotary supporting mechanism, a lateral movement mechanism and an outward inclination mechanism, and is characterized in that the bottom plate is provided with a tire mounting base, the tire mounting base is provided with a tire mounting mechanism, and the tire mounting mechanism is used for mounting a wheel; the vertical lifting mechanism is mounted on one side of the base, the vertical lifting mechanism is located below the tire mounting mechanism, and the vertical lifting mechanism is provided with a vertical displacement sensor; the rotary supporting mechanism is mounted on the vertical lifting mechanism, and the rotary supporting mechanism is provided with a rotation angle sensor; the lateral movement mechanism is installed on the rotary supporting mechanism and provided with a lateral movement sensor. The outward inclination mechanism is mounted on the lateral movement mechanism and is provided with an outward inclination angle sensor; the tire static rigidity test bench further comprises a six-component sensor used for being installed on a hub of a wheel.

The invention provides an internal detection sensor and a tire inner cavity appearance detection system, and belongs to the field of industrial automatic visual detection. The internal inspection sensor comprises a laser emitting unit and an image collecting unit, and can project an annular laser beam with the covering angle not smaller than 340 degrees and collect an inner wall image. The system comprises the sensor, an industrial robot and a tire expander. The industrial robot sends the sensor to a tire internal channel opened by a tire expander; when the tire expander drives the tire to rotate, the static sensor can perform 360-degree panoramic image acquisition on the rotating inner wall.

The invention discloses a tire high-speed uniformity dynamic test method, device and equipment under multi-axis excitation, and relates to the technical field of vehicles. The tire high-speed uniformity dynamic test method under multi-axis excitation comprises the steps that a tire is installed on a test bed with a rotary drum, the test bed is controlled to apply lateral excitation to the tire according to multiple lateral displacements, a high-speed uniformity dynamic test is carried out, and a first test result is obtained; according to the plurality of longitudinal slip rates, controlling the test bed to apply longitudinal excitation to the tire and perform high-speed uniformity dynamic test to obtain a second test result; according to a plurality of composite parameters obtained by combining a plurality of lateral displacements and a plurality of longitudinal slip rates in pairs, controlling the test bed to apply composite excitation to the tire and perform high-speed uniformity dynamic test to obtain a third test result; and summarizing the three test results to obtain a high-speed uniformity dynamic test result of the tire. According to the method, the high-speed uniformity performance of the tire under the complex working condition can be evaluated more comprehensively.

The invention relates to the technical field of test equipment, in particular to a tire puncture resistance automatic simulation test machine and a test method thereof. The device comprises an objective table, a protective cover and a device body, the objective table comprises an objective plate and a vertical support, the protective cover is installed on the vertical support, and the device body covers the interior of the protective cover; a transparent observation window is arranged at the lower part of the protective cover; the device body comprises a driving module, a puncturing module, a fastening module and a detection module which are sequentially arranged from top to bottom. Full-process automation is achieved through the control box, the driving electric cylinder is controlled to move, key data such as pressure and displacement are collected in real time, a puncture force-displacement curve graph is formed, the puncture resistance of the tire is quantitatively evaluated, the mechanical parameter collection error is smaller than or equal to + / -3.0%, and the working efficiency is effectively improved by 50%; and a plurality of device bodies can be placed in the protective cover, so that batch tests of different batches and different dynamic parameters are realized, and diversified test requirements are met.

The invention relates to the technical field of tire detection, and discloses a tire antiskid performance detection device for a new energy automobile, the tire antiskid performance detection device comprises a bottom plate, a moving plate, a lifting adjusting mechanism, a tire control mechanism and a tire cleaning mechanism, a fixed seat of a concave structure is fixedly arranged near the front end in the bottom plate in a penetrating manner, and an antiskid test seat is fixedly distributed at the upper end of the moving plate; the rear end of the movable plate is connected with a test mode switching driving structure; the lifting adjusting mechanisms are fixedly arranged at the front end and the rear end of the top of the bottom plate, the tire control mechanism is fixedly arranged between the upper ends of the lifting adjusting mechanisms and comprises a tire driving mechanism and a tire angle adjusting mechanism, and the tire cleaning mechanism is arranged at the side end of the tire control mechanism and extends downwards to the side of the tire angle adjusting mechanism. Accurate driving and angle adjustment of the tire can be realized, the requirements of different test scenes are met, different test modes are conveniently switched, the test efficiency is improved, and the operation difficulty is reduced.

The invention relates to the technical field of tire resistance detection, in particular to an automobile tire resistance dynamic detection device and a use method.The automobile tire resistance dynamic detection device comprises a tire mounting table, a support, a center shaft and a roller, a detected tire is mounted on one side of the tire mounting table, the roller is mounted on one side of the tire, and the roller is fixedly connected with the center shaft through a connecting frame; the center shaft is installed at the upper end of the support, and a surface friction adjusting mechanism is installed in the roller. The surface friction force adjusting mechanism comprises an adjusting rod, a control unit is installed in the adjusting rod, the end, close to the center point of the roller, of the adjusting rod is fixedly connected with the elastic ring, a driven ring is installed in the adjusting rod, and a positioning unit is installed on the outer side of the driven ring. According to the tire resistance testing device, the driving resistance of the tire on road surfaces with different friction coefficients can be simulated, the accuracy of tire resistance testing data can be further improved, and the testing process can be realized only by rotating the button cap, so that the testing is relatively convenient.

The invention provides a tire noise testing system, which relates to the technical field of vehicle testing and comprises a base, a driving box is arranged at the top end of the base, the top end of the driving box is fixedly connected with a turntable through a rotating shaft, a tire fixing mechanism is arranged on the turntable, and a simulated road surface mounting mechanism is further arranged at one end of the base. According to the device, tires of different specifications and sizes are clamped and fixed by arranging the tire fixing mechanism, then the simulated road surface plate is moved to be in contact with the tires through the simulated road surface mounting mechanism, then the tires are rotated through the driving box, and finally the tires are rotated by rotating the tires. And noise is collected and tested during rotation. In the prior art, a rotary drum method is high in measurement cost, is influenced by a site, and is inaccurate in measurement data; the technical problems of high cost of measuring equipment, high requirement on a test road section, large external influence and limited test equipment in the prior art are solved.

Sensor modules mountable on a wheel are described with methods of use. A sensor module for a wheel includes a base module mountable to a rim. The sensor module further includes a first set of piezoelectric sensors coupled to the base module at a first side and a second set of piezoelectric sensors coupled to the base module at a second side. A method includes receiving a first force from a tire on a piezoelectric sensor mounted on a rim, the force resulting from an inflation of the tire and causing a first strain on the sensor. The method further includes receiving a second force on the sensor corresponding to a deformation of the tire due to surface contact, where the second force causes a second strain. The method also includes generating wheel data from electrical signals produced by the sensor; and transmitting the wheel data to a remote device.

The invention relates to the technical field of tire detection, in particular to a tire puncture resistance detection device and a use method thereof. The tire puncture resistance detection device comprises a portal frame, a tire mounting mechanism, a puncture mechanism and a driving mechanism for driving the puncture mechanism to move up and down are arranged on the portal frame from bottom to top, the puncture mechanism comprises a needle head and a closed needle cylinder, and a central air hole communicated with the needle cylinder is axially formed in the needle head. A rotating ring is rotationally arranged on the outer side wall of the needle cylinder, a plurality of rectangular blades deviating from the axis of the needle cylinder are arranged on the circumference of the outer side wall of the rotating ring at equal intervals, an annular groove communicated with the needle cylinder in a sealed mode is formed in the inner side wall of the rotating ring, and exhaust holes communicated with the annular groove are horizontally formed in the blades. The puncture resistance of the tire can be rapidly judged, the tire is easy to install, and the service life of equipment is long.

The invention relates to a method for monitoring the condition of vehicle tires (10), comprising an electronic condition assessment device (12) comprising an electronic data processing device with a storage unit, comprising the method steps: a) detecting a surface topography for at least one profile section of the vehicle tire (10) with an optical detection unit (12), wherein the optical detection unit comprises an optical image acquisition device (14) and a projection device (16) configured to project a pattern onto the profile section, wherein the electronic data processing device is configured to calculate a three-dimensional representation of the profile section of the vehicle tire (10) from the image of the pattern detected by the optical detection unit on the profile section.b) Acquiring one or more tire parameters of the vehicle tire (10) with one or more electronic acquisition units (18) of the condition assessment device (12), and c) Outputting the surface topography of the vehicle tire (10) or profile condition information derived therefrom and the one or more tire parameters of the vehicle tire (10) via an output unit (20) of the condition assessment device (12).

A hydroplaning detection system includes a processor in communication with a communication system and a warning module in communication with the processor. The warning module receives data from vehicle-based sensors and generates an expected slip, a grip utilization, a drag force, and a calculated slip. The warning module receives data from a tire sensor unit and determines a confidence level by comparing the generated drag force to an expected drag. The warning module includes a hydroplaning detection logic that receives the expected slip, the grip utilization, the drag force, the calculated slip, and the confidence level and generates a hydroplaning detection warning and a warning confidence level. The warning module communicates the warning and the warning confidence level to at least one of a vehicle control system and an operator of the vehicle for action by the vehicle control system or the vehicle operator.

A method for calculating the wear rate of a tire implemented on a computer, comprising providing an aggregation of residual tread depth (RTD) evaluations based at least in part on data obtained from at least one sensor attached to at least one tire of a vehicle, generating a mathematical model for the wear rate of the tire based at least in part on the provided aggregation of RTD evaluations, and calculating the wear rate of the tire based at least in part on the generated mathematical model for the wear rate of the tire.

The utility model discloses a wheel tire assembly drop impact test device, and belongs to the technical field of vehicle part tests. The device comprises a supporting structure, a lifting structure and a falling structure. The supporting structure is used for supporting the lifting structure and the falling structure; the lifting structure is used for driving the falling structure to move in the vertical direction and disconnecting the lifting structure and the falling structure under the condition that a falling signal is received, so that the falling structure falls down; the falling structure is used for connecting a wheel tire assembly to be tested and driving the wheel tire assembly to fall down. According to the device, the lifting and falling of the wheel tire assembly are realized through the lifting structure, and the test requirement of the reliability of the wheel tire assembly is met.

The utility model discloses a tire wear resistance detection device, which comprises a workbench, the top of the workbench is fixedly connected with a fixed plate, one side of the fixed plate is fixedly connected with a first motor, the output end of the first motor is fixedly connected with a rotating shaft, the outer side of the rotating shaft is circular and is fixedly connected with a second electric push rod, and the second electric push rod is fixedly connected with a second electric push rod. A top plate is fixedly connected to the output end of the second electric push rod, second sliding grooves are symmetrically formed in one side of the interior of the workbench, two-way threaded rods are rotationally connected into the second sliding grooves, the second electric push rod is started to push the top plate to make contact with the inner side of the tire, and the position of the top plate is conveniently adjusted; the tires of different specifications and sizes are supported and fixed through the detection device, the application range and practicability of the detection device are improved, the multiple second electric push rods and the multiple top plates are arranged, abrasion resistance detection can be conducted on the multiple tires at the same time, operation is easy and fast, friction pads are convenient to install and replace, and therefore the working efficiency is improved.

A retreadability determination method includes a step (S1) of acquiring a state characteristic value, indicating a state of the tire, to be used in a first determination and a second determination, a step (S2) of executing the first determination, and a step (S9) of executing the second determination in a case in which it is determined in the first determination that the tire can be retreaded. The first determination is one of a chemical degradation state determination using a residual durability of the base tire calculated based on a chemical change in rubber material of the tire and a physical degradation state determination using a residual durability of the base tire calculated based on a state of physical damage to the tire, and the second determination is the other of the chemical degradation state determination and the physical degradation state determination.

A system for measuring a tread of a tire can include a nonmagnetic layer, a frame, and a housing. The nonmagnetic layer can provide a drive-over surface adapted to receive the tire thereon including the tread to be measured. The frame can have a magnet and a magnetic sensor coupled thereto. The housing can include a cavity therein. The frame with the magnet and the magnetic sensor can be mounted in the cavity. The nonmagnetic layer can be provided on the housing and on the frame.