663 results about "Rolling resistance" patented technology

A wheel assembly to be coupled to a hub of a vehicle may include an inner rim to be coupled to the hub of the vehicle and an outer rim surrounding the inner rim. The wheel assembly may also include gas springs operatively coupled between the inner rim and the outer rim to provide a gas suspension for relative movement between the inner rim and the outer rim. Each of the gas springs may have a controllable gas pressure. The wheel assembly also includes a wheel rotational position sensor, a vehicle operator control input interface, and a controller configured to control the gas pressure in each of the gas springs in a pattern in response to the wheel rotational position sensor and vehicle operator control input interface to assist in one of overcoming a rolling resistance of the wheel and a braking of the wheel.

The invention discloses a wheel deviation resistance energy consumption monitoring method and device based on a new energy automobile, belongs to the technical field of tires of new energy automobiles, and aims to solve the problems that online monitoring is difficult to realize in the running process of an existing wheel deviation resistance monitoring method of the new energy automobile, and the energy consumption is low. And extra energy consumption caused by wheel deviation resistance is also easy to influence the prediction of the remaining mileage. The method comprises the steps that tire three-dimensional modeling sensing based on linear driving is conducted on the wheel running state of the new energy automobile, and abnormal wheel deviation tires of the new energy automobile are determined; according to geometric characteristics and mechanical characteristics between the tread and the ground, performing characteristic parameter calculation processing on the tread ground contact plane graph under an extrusion area to obtain an abnormal wheel deviation parameter of the abnormal wheel deviation tire; global contact coupling rigidity calculation is carried out on the abnormal wheel deviation parameters, and the tire stress of the abnormal wheel deviation tire is determined; and inputting the tire stress into the tire rolling resistance model to obtain the tire rolling resistance of the tire with abnormal wheel deviation.

The invention discloses a complex terrain-oriented tracked vehicle energy efficiency optimization path planning method and system, and the method comprises the steps: firstly constructing a joint energy consumption model on a rasterized three-dimensional terrain, and superposing the straight rolling resistance, gradient and steering equivalent resistance moment energy consumption to obtain node cost; then, under the framework of a weighted A * function, the product of Euclidean distance and energy consumption rate is used as a heuristic function, and rapid rough search is achieved; halton sampling is carried out on the coarse path nodes, an environment vector is calculated based on the distance between a sample and the center and the gradient difference, offsets are carried out, impassable samples are removed, secondary search is carried out after a probability road network is reconstructed, and the local path quality is improved; and finally, smoothing the broken line by using a three-dimensional fourth-order B spline, eliminating the conflict with the impassable area by densifying nodes, and outputting an executable track with continuous curvature. Simulation shows that compared with A *, Dijkstra and PRM algorithms in complex terrains, the method saves energy by 5.2%-12% on average, and the energy saving performance of the tracked vehicle is achieved.

The invention discloses a low-resistance and high-wear-resistance tire rubber composition as well as a preparation method and application thereof, and belongs to the technical field of rubber materials. The tire rubber composition comprises the following raw materials in parts by weight: 50-70 parts of natural rubber NR, 30-50 parts of solution polymerized styrene-butadiene rubber SSBR, 40-60 parts of modified white carbon black, 3-5 parts of zinc oxide, 1-2 parts of stearic acid, 1-3 parts of an anti-aging agent 6PPD and 2.5-3.5 parts of a vulcanization system. The prepared tire rubber material has the advantages that the rolling resistance is obviously reduced, the wear resistance is improved, the energy consumption is effectively reduced, and the requirements of new energy automobiles on high-performance tires are met. Through three-step modification treatment, the white carbon black is uniformly dispersed in a rubber matrix, and the interface bonding is firm, so that the prepared tire can reduce the rolling resistance of the tire using the tread rubber, and the tread rubber has higher wear resistance, tensile strength and elongation at break, and accords with the development direction of new energy automobiles in the future.

The invention relates to the technical field of tire simulation design, in particular to a method and system for obtaining an actual material distribution diagram of a tire and a computer program product. According to the method, the outer contour and the material distribution diagram are accurately matched by scanning the outer contour of an actual tire, combining with the material distribution diagram of the section of the tire and adopting smooth processing and affine transformation technologies. The method comprises the specific steps of scanning the outer contour of a tire, drawing a material distribution diagram, smoothing the contour, selecting and equally dividing a mapping curve, calculating an affine transformation matrix, dividing the material distribution diagram into a plurality of small areas, and executing affine transformation on the small areas to generate an actual material distribution diagram. According to the method, the simulation precision is remarkably improved, the correction time is shortened, and the method is suitable for various tire models and complex structures. The material distribution map generated by the method can provide accurate data support for performance optimization of tire rolling resistance, stress analysis and the like, and has wide application value.

The invention relates to the technical field of tire processing, in particular to a pattern and rolling resistance simulation evaluation method and system for a rubber engineering tire. The method comprises the following steps: acquiring tire pattern parameters; building a finite element model of tire-road surface contact according to the tire pattern parameters; according to the finite element model, determining deformation distribution, longitudinal tensile strain, grounding pressure distribution and pavement contact rigidity of the tire in the rolling process; and determining a rolling resistance evaluation value according to the deformation distribution, the longitudinal tensile strain, the grounding pressure distribution and the pavement contact rigidity. And rapid parameterization iteration is supported, and modeling errors caused by non-uniform geometric feature description are avoided. And the simulation accuracy and repeatability are ensured. The influence of the pattern structure on the rolling process is reflected, and a foundation is laid for a rolling resistance evaluation value. Quantitative evaluation of the tire rolling resistance is realized, data-driven design optimization is supported, and the simulation efficiency is improved.

The invention provides a low-rolling-resistance and high-wet-grabbing pneumatic radial tire, which belongs to the technical field of tires, and comprises a tread and a circumferential groove extending along the circumferential direction of the tread, the contour between the highest point of the tread and the end point of one side of the tread is sequentially divided into a first arc section, a second arc section, a third arc section and a fourth arc section, the radius TR1 of the first section of arc, the radius TR2 of the second section of arc, the radius TR3 of the third section of arc and the radius TR4 of the fourth section of arc meet the following relation: TR1: TR2: TR3: TR4 = 2.3: 1.9: 1.6: 1; the number of the circumferential grooves is five, the five circumferential grooves sequentially comprise a central water-drop-shaped pattern groove, two pattern grooves close to the center and two shoulder water-drop-shaped pattern grooves from the center to the two sides of the tread, and the central water-drop-shaped pattern groove and the shoulder water-drop-shaped pattern grooves are grooves which are self-closed in a loading state; according to the invention, the tire structure design, the pattern design and the formula design are optimized, so that the tire has the ultimate durability, low rolling resistance and full-life-cycle high-wet-grip performance at the same time.

The invention relates to a low-rolling-resistance pneumatic tire, and the low-rolling-resistance pneumatic tire is provided with a tread, and a circumferential groove is formed in the tread; each circumferential groove is provided with a notch groove, a thin groove and a water storage groove which are sequentially formed from the tire surface to the interior of the tire body; the maximum widths of the notch groove, the thin groove and the water storage tank in the axial direction of the tire are marked as W1, W2 and W3 respectively, and at least W2lt is met; w1 and W2lt; w3. According to the low-rolling-resistance pneumatic tire, the three-section groove design of the notches, the thin grooves and the water storage grooves is adopted in the radial direction of the tire through the central circumferential groove, and parameters such as the width, the depth and the repeated spacing are reasonably configured for the three-section groove design, so that it is ensured that the tire has excellent wet land performance, low-rolling-resistance performance and stone clamping prevention performance.

The invention relates to the technical field of tire rubber manufacturing, and discloses an EV tire tread rubber composition adapting to low temperature and a mixing method thereof. According to the invention, the high-vinyl solution polymerized styrene-butadiene rubber A, the low-glass transition temperature solution polymerized styrene-butadiene rubber B and the lithium-series cis-butadiene are matched to form a rubber substrate, and the high-dispersion white carbon black, the bio-based filling oil and the high-proportion wet-skid-resistant resin are matched, so that the matching amount of various raw materials is strictly controlled; and the rolling resistance of the tire at low temperature is effectively reduced while the gripping performance of the tire is ensured.

The invention provides a light, high-strength and low-rolling-resistance tire for a new energy automobile and a preparation method of the light, high-strength and low-rolling-resistance tire, and relates to the technical field of tires. The light, high-strength and low-rolling-resistance tire for the new energy automobile comprises a tread and a sidewall, wherein the tread and the sidewall are both composed of tread rubber comprising the following components: low-epoxy-degree epoxidized solution polymerized styrene-butadiene rubber with the epoxy degree of 6.5-8.4%, high-epoxy-degree epoxidized solution polymerized styrene-butadiene rubber with the epoxy degree of 21.2-23.7%, natural rubber, carbon black, white carbon black and a rubber additive. By optimizing the formula of the tread rubber, the lightweight of the tire is realized, the rolling resistance of the tire is effectively reduced, the strength and aging resistance of the tire are improved, and the service life of the tire is prolonged.

The invention relates to the technical field of road testing, in particular to an asphalt mixture and tire interactive loading type rolling resistance accurate testing device and a testing method thereof. The method specifically comprises the following steps: step 1, determining a loading load of a loading assembly, a rotating speed of a torque control assembly, and test parameters of asphalt mixture test pieces and test tires of corresponding types; 2, adjusting equipment according to a measurement mode according to a measurement requirement, wherein the measurement mode is divided into an overall rolling resistance test and a local rolling resistance test; 3, acquiring image data and test data after the asphalt mixture test piece and the test tire are tested, calculating rolling resistance, and obtaining final rolling resistance test data through an overall rolling resistance test and a local rolling resistance test; the resistance testing device has the beneficial effects that the resistance of the asphalt mixture test piece and the rolling resistance testing assembly can be measured, so that the error of the resistance coefficient between the tested tire and the asphalt mixture test piece obtained through measurement is reduced.

A system and method of operating a vehicle includes determining a condition of the vehicle, changing a camber of at least one tire in response to the condition and changing a contact patch from a first portion of the at least one tire from a first portion to a second portion. The first portion has different rolling characteristics from the first portion.

A two-wheeled vehicle pneumatic tire having a tread, a tire carcass, tire sidewalls, and two bead regions with a bead protective strip. The tire carcass is formed from a first carcass inlay and a second carcass inlay. The second carcass inlay is arranged radially inwardly of the first carcass inlay, and extends from a crown region (17) of the two-wheeled vehicle pneumatic tire and terminates at a second carcass inlay end under the bead protective strip. The two-wheeled vehicle pneumatic tire provides improved puncture protection whilst maintaining good rolling resistance. This is achieved in that the first carcass inlay is guided with a first carcass inlay turn-up over the particular tire sidewall as far as under the tread to a first carcass inlay end, and terminates there at the first carcass inlay end.

The invention discloses a low-rolling-resistance and high-abrasion truck radial tire, and relates to the technical field of tire design, the truck radial tire comprises a tire body, a tread, a tire body, a sidewall, a tire bead, a belted layer, a steel wire ring and apex, the relation of the outer contour of the tire body is h / D > = 1.2% and < = 5.2%, the radial height difference between the end point of the outer contour of the tread and the middle point of the outer contour of the tread is h, and the width of the tire body is 0.5 mm. The vertical distance from the widest end point position in the belted layer to the grounding contour is D, the relationship of the inner contour of the tire body is (Gs-h) / Gc is greater than or equal to 0.98 and less than or equal to 1.02, the vertical distance from the end point of the outer contour of the tread to the inner contour is Gs, and the vertical distance from the midpoint of the outer contour of the tread to the inner contour is Gc. The design scheme of the low-rolling-resistance and high-abrasion truck radial tire is obtained by starting from key design elements of the tire and considering the relation between the rolling resistance and the abrasion of the tire, more fuel oil can be saved, and the abrasion mileage is longer.

The invention provides a preset time tracking control method based on a vehicle model, and aims to improve the response rate under the condition of vehicle following, reduce the problem of'ghost vehicle 'under the condition of vehicle following, and improve the traffic efficiency. On the basis that air resistance, ramp resistance and rolling resistance borne by the following vehicle in the vehicle following process are considered, the preset time control theory and vehicle tracking control are combined, and the controller is designed to achieve tracking control over the vehicle within the safe vehicle distance. The controller needs to meet two requirements of tracking stability and position tracking error convergence, that is, in the vehicle tracking control process, it needs to be guaranteed that a stable relation exists between the motion state of a following vehicle and the motion state of a front vehicle; namely, the following vehicle should keep the speed consistent with that of the front vehicle within the preset time so as to ensure safe vehicle distance driving, meanwhile, the position tracking error of the rear vehicle is converged to a field near zero within the preset time, and it is ensured that the rear vehicle accurately follows the front vehicle.

To provide a pneumatic tire which can balance improvement of wandering performance with suppressing of rolling resistance.SOLUTION: A tread 30 of a pneumatic tire comprises: a tread surface 36 which contacts with a road surface; and a belt 31 which is embedded in the tread 30. A land 70 of the tread surface 36 includes a shoulder land 72 which is arranged at an end part of the tread surface 36 in a tire axial direction. A major groove 80 of the tread surface 36 includes a second major groove 82 as a shoulder major groove which is adjacent to the shoulder land 72 at an inner side in the tire axial direction. The shoulder land 72 includes a plurality of slits 77 which are extended in a direction crossing the tire circumferential direction and arrayed in the tire circumferential direction. When ground width of the tread surface 36 is C and width of the belt 31 is B, a ratio B / C is 105% or more and 110% or less at the time of 70% load of the maximum load based on the tire standard JATMA. An end 77a of the slit 77 at an inner side in the tire axial direction is not communicated with the second major groove 82 and is terminated in the shoulder land 72.SELECTED DRAWING: Figure 2

A system for controlling a machine includes a machine configured to travel down a slope, the machine having a braking system, a sensor configured to generate a signal that indicates travel speed of the machine or a weight of the machine, and a controller. The controller is configured to receive the travel speed signal, estimate a rolling resistance of the machine, the rolling resistance being affected by a surface on which the machine travels, update the rolling resistance of the machine over time, and set an amount of braking based on the signal and the rolling resistance estimate.

The invention relates to the technical field of low-carbon microalloyed steel production, in particular to a high-efficiency rolled thin L450M pipeline steel plate and a manufacturing method thereof, the steel comprises the following chemical components in percentage by weight: 0.05%-0.07% of C, 0.10%-0.25% of Si, 1.45%-1.55% of Mn, less than or equal to 0.020% of P, less than or equal to 0.015% of S, 0.05%-0.06% of V, 0.05%-0.10% of Cr, 0.008%-0.020% of Ti, 0.015%-0.04% of Al, 0.005%-0.009% of N and the balance of Fe and inevitable impurities, and the total amount of impurity elements is less than 0.05%; the production process of the steel plate comprises the steps of molten steel smelting, external refining and degassing, continuous casting, casting blank heating, controlled rolling, controlled cooling and air cooling to the room temperature. The method is used for manufacturing the high-strength L450M hot-rolled steel plate for the oil pipeline with the thickness specification being 9-15 mm and the pipe diameter being phi 914 mm or below, the problems that the steel plate rolling efficiency is low, the rolling resistance is large, the steel plate performance uniformity and the plate shape are not easy to control and the like are solved, and the steel plate has the advantages of being low in cost, high in strength and toughness, high in strength, excellent in low-temperature toughness and the like.

A sensor arrangement is disclosed for determining upcoming operating conditions of a wheel of a vehicle. The sensor arrangement comprises at least one temperature sensor configured to be mounted in vicinity of the wheel. The at least one temperature sensor is configured to measure a ground surface temperature of a portion of the ground surface to be traveled by the wheel, and a tire temperature of the outer surface of a tire of the wheel. A computer system is also disclosed. The computer system comprises processing circuitry configured to receive measurement data from the sensor arrangement, and to predict an upcoming rolling resistance and / or an upcoming tire-ground friction based on the measurement data. Corresponding operating conditions determination system, vehicle, computer-implemented method, computer program product, and non-transitory computer-readable storage medium are also disclosed.

The invention discloses a method for increasing the sidewall turn-up height in a building process of an all-steel radial tire, which comprises the following steps of: acquiring multi-source data such as temperature, pressure and angle in a turn-up process through an infrared temperature sensor, a pressure sensor and the like; and constructing a multiple linear regression model, a machine learning model and a hybrid model fused with the physical principle, analyzing the relationship between the process parameters and the anti-package height, and performing verification and optimization. According to model output parameters, a servo motor is used for accurately controlling the downward pressing angle and pressure of a reverse wrapping pressing roller, and production is executed in cooperation with an auxiliary supporting ring and a sectional type reverse wrapping technology; meanwhile, the turn-up height is detected in real time through an intelligent monitoring system, and parameters are automatically adjusted when the turn-up height does not reach the standard. According to the method, precise regulation and control of the tire sidewall turn-up height are achieved, compared with a traditional process, the product percent of pass is increased to 95% or above from 85%, the production efficiency is improved by 20%-30%, the tire structure stability is effectively enhanced, the rolling resistance and the tire burst risk are reduced, and intelligent upgrading of tire manufacturing is promoted.

The invention discloses a tire material modulus determination method and device. The method comprises the steps that a two-dimensional material distribution diagram of a tire is obtained, a two-dimensional finite element tire model is constructed based on the two-dimensional material distribution diagram, and then a three-dimensional finite element tire model is constructed; the circulation process is as follows: first modulus distribution data of the current circulation are taken, and second modulus distribution data are obtained through amplification by a preset multiple; the first modulus distribution data and the second modulus distribution data are substituted into the three-dimensional model for steady-state rolling simulation, and a first simulation result and a second simulation result are obtained; determining deformation index distribution data of the tire according to the two simulation results; if the deformation index does not meet the preset condition, correcting the first modulus distribution data according to a preset adjustment rule, and applying the first modulus distribution data to the next cycle; and if a preset condition is met, ending circulation, and outputting final first modulus distribution data. The technical problems of low durability and high rolling resistance of the tire caused by unreasonable configuration of the modulus of the tire material in the tire production process are solved.

The invention belongs to the technical field of rubber, and particularly relates to a rubber composition, a preparation method thereof and a TBR tire using the rubber composition. The rubber composition is prepared from the following components in parts by mass: 100 parts of diene rubber, 0.2 to 1.5 parts of hydrazide compound, 0.2 to 1.5 parts of tetrazine compound multifunctional modifier, 0 to 30 parts of liquid rubber, 20 to 120 parts of reinforcing filler, 1 to 10 parts of silane coupling agent, vulcanization accelerator, vulcanizing agent, antioxidant, vulcanization activator, resin and plasticizer. The rolling resistance and heat generation of the TBR all-steel tire can be obviously reduced, and meanwhile, the cutting resistance and tear resistance of the tire are improved.

The invention discloses a friction plate modeling method of a braking system and a related device, and relates to the technical field of vehicle dynamics, the first braking state of the braking system at the current moment is determined; and under the condition that the first braking state is the locked state, based on the assumption that the connection relation is the spring damping system, the first friction torque between the friction plate model and the wheel model is calculated, and the first friction torque is the first braking torque of the braking system in the locked state. When the wheel is locked, the static friction force of the friction plate is approximately equal to the rolling resistance of the wheel, and the friction plate and the wheel are not absolutely rigid, so that the friction plate slightly deforms under stress, and the static friction force of the friction plate fluctuates up and down under the resistance of the wheel but does not suddenly change; according to the application, during modeling, a spring damping system is used between the friction plate model and the wheel model to achieve a similar effect, so that the brake torque under a vehicle locking state can be accurately simulated, and great help can be provided for a brake control system algorithm simulation test.

The invention relates to the technical field of road load testing, in particular to an automobile road load testing method and system. The method comprises the steps that a wind tunnel test environment is arranged, in the wind tunnel test environment, wheels of a to-be-tested vehicle are arranged on a wheel driving unit, a vehicle body is connected with a six-component force measuring balance through a vehicle skirt restraint system, and the vehicle skirt restraint system adopts a floating mode; airflow is controlled to blow through the surface of the vehicle, the central belt simulates ground motion, and the central belt and the wheel driving unit are synchronous with wind speed; the to-be-tested vehicle moves at each reference vehicle speed; after each reference vehicle speed is stable, determining the aerodynamic resistance of the to-be-measured vehicle at each reference vehicle speed based on a balance force transducer; meanwhile, based on the wheel driving unit, the rolling resistance of the wheel is determined; and determining the road load of the to-be-tested vehicle according to the rolling resistance and the aerodynamic resistance. According to the invention, the road load can be obtained more accurately, efficiently and quickly.

The invention relates to the technical field of tire manufacturing, and discloses a low-rolling-resistance truck radial tire which comprises a tread, a sidewall, a belted layer, a tire body, a steel wire ring and steel wire wrapping cloth, the outer contour of the tread is of an arc-shaped structure on a tire interface, the arc length of the tread is L, the arc length L adopts the design of two sections of tangent arcs, and the arc length L is larger than the arc length L; the tread is provided with three pattern grooves which divide the tread into four same pattern blocks, the three pattern grooves are composed of two conventional open type longitudinal grooves and a Y-shaped longitudinal groove in the longitudinal direction, and the Y-shaped longitudinal groove is located between the two open type longitudinal grooves. According to the truck radial tire with the low rolling resistance, by optimizing the structural design, the pattern design and the formula design of the tire, the tire has the ultra-low rolling resistance performance, and meanwhile eccentric wear and different wear can be effectively reduced.

The invention provides an elastic damping wheel set and a carrier. The elastic damping wheel set comprises an elastic seat, the elastic seat comprises an outer pipe and an inner pipe, the outer pipe and the inner pipe are integrally connected through a plurality of spokes, and a hollow hole is formed between every two adjacent spokes; the wheel body is coaxially provided with a shaft assembly, the shaft assembly penetrates through the inner pipe and is assembled with the inner wall of the inner pipe, and the wheel body has the rotational degree of freedom relative to the elastic seat; and the supporting arm is connected with the outer wall of the outer pipe, and the supporting arm can be assembled to a carrier. The elastic seat does not rotate, the wheel body rotates, the elastic seat participates in elastic buffering, and the wheel body participates in rolling. Therefore, the wheel has the advantages of elastic buffering and low rolling resistance at the same time, and the elastic buffering can cope with vibration of the wheel body in all directions.

The invention relates to the technical field of tire rubber manufacturing, and discloses a tread rubber composition containing modified liquid rubber. According to the rubber composition, solution polymerized styrene-butadiene rubber and butadiene rubber are used as rubber substrates to construct a rubber system, and high-specific-surface-area white carbon black (BET is greater than or equal to 180m / g) is also added into the rubber system. The modified liquid rubber is added into the rubber system. The modified liquid rubber is prepared by melting and grafting unsaturated regenerated liquid rubber and maleic anhydride in the presence of a free radical initiator, and waste tire resources are effectively utilized. The modified liquid rubber can be used as a wetting agent, a coupling agent and a cross-linking active matter in the tread rubber composition at the same time, can effectively improve the dispersibility of the white carbon black, enhance the interface bonding force of the white carbon black and the rubber composition, weaken the Payne effect and enhance the wear resistance of the rubber composition, and does not affect the rolling resistance and wet skid resistance of the rubber composition. And the low-energy-consumption requirement of a new energy automobile is met.

The invention discloses a low-noise and low-rolling-resistance tire tread and a preparation method thereof, and relates to the technical field of tire production, the low-noise and low-rolling-resistance tire tread comprises a supporting layer and multiphase composite tread rubber; the multiphase composite tread rubber comprises a continuous phase matrix, white carbon black with a two-phase structure, functionalized multiwalled carbon nanotubes, a disilane coupling agent, dynamic crosslinking thermoplastic elastomer particles, zinc oxide, stearic acid, an anti-aging agent, an accelerant and sulfur, and good wear resistance and mechanical strength are kept while the rolling resistance and driving noise of a tire are remarkably reduced.

The invention provides a high-performance tire tread material as well as a preparation method and application thereof. The high-performance tire tread material is prepared from the following raw materials: functionalized solution polymerized styrene-butadiene rubber, epoxidized rubber, filler, an activating agent, an anti-aging agent, a plasticizer, an accelerant and a vulcanizing agent. The composition comprises the following components in parts by weight: 50-95 parts of functionalized solution polymerized styrene-butadiene rubber based on the total weight of the functionalized solution polymerized styrene-butadiene rubber and the epoxidized rubber being 100 parts; 5-50 parts by weight of epoxidized rubber; the functional group of the functionalized solution polymerized styrene-butadiene rubber is at least one of siloxane group, amido, carboxyl, ester group, hydroxyl, acylamino, sulfur-containing group and perfluoroalkyl. The prepared high-performance tire tread material can be used for preparing green tire treads, has lower rolling resistance and heat generation and higher elongation at break, and improves wet skid resistance and wear resistance.

The invention relates to a vehicle driving device, and belongs to the field of transportation tools. A driving device of an existing vehicle has many defects such as large rolling resistance, large wind resistance, large occupied space of wheels, small effective space of the vehicle, serious safety problems caused by tire burst when the vehicle runs at a high speed and the like. The vehicle driving device is composed of two sets of devices arranged on the left side and the right side of a vehicle respectively, each set of device is provided with a plurality of loading wheels which are connected to a vehicle body and make contact with the ground through elastic components, and each loading wheel is connected with a chain wheel or a belt wheel or a gear or other similar components. A driving gear or / and a driven gear is / are connected with the power output end, and one or more chains or belts or toothed belts or other similar components are / is / are connected with chain wheels or belt wheels or gears on the loading wheels. Through the design, the defects in the prior art can be overcome.