110 results about "Unsprung mass" patented technology

The invention provides an OBD message analysis and attitude rendering method and system based on a vehicle dynamics model, and belongs to the field of vehicle electronics and control. The method comprises the steps that a message is analyzed through an OBD interface, and vehicle operation parameters are obtained; establishing a unified time base and carrying out resampling and synchronous processing on the data of each channel; constructing a fifteen-degree-of-freedom vehicle dynamics model comprising a vehicle body six-degree-of-freedom pose, a vehicle body angular velocity, a four-wheel rotation angular velocity and unsprung mass vertical displacement for state prediction; designing an observation function to map a model state to an OBD observation space, and adopting an observability enhancement strategy; predicting and observing data are fused by using a nonlinear filter, and abnormal observation gating is carried out based on a mahalanobis distance and an amplitude threshold value; compensating system time delay and adaptively adjusting observation noise; and performing three-dimensional real-time rendering on the attitude information. According to the method, high-precision and high-robustness vehicle attitude estimation can be realized only by depending on the OBD message, and the system cost is effectively reduced.

The invention relates to the technical field of control systems, and discloses a control system for a magneto-rheological semi-active suspension, comprising an acceleration sensor configured to collect vibration acceleration signals of sprung mass and unsprung mass of a vehicle; the displacement sensor is configured to monitor the dynamic deflection of the suspension; the gyroscope is configured to obtain attitude information of a pitch angle and a roll angle of the vehicle body; the vehicle speed sensor is configured to detect the vehicle running speed in real time; the binocular camera is configured to collect pavement environment image information; the magneto-rheological damper is configured to adjust the damping force according to the current of the electromagnetic coil; the MCU controller comprises a signal acquisition module, a control processing module, a current driving module and a current sampling module; the signal acquisition module is configured to convert a sensor signal into a physical quantity; the control processing module is configured to fuse multi-source information to calculate expected damping force; the current driving module is configured to output PWM driving current to the magnetorheological damper; and the current sampling module is configured to feed back an actual current value to realize closed-loop control.

The invention discloses a corner module assembly for an electric vehicle and the electric vehicle, and relates to the technical field of new energy automobiles. The angle module assembly comprises a wheel edge controller, a driving motor, a braking motor and a steering motor, the wheel edge controller comprises a shell, a control circuit and a driving circuit, and the control circuit is used for controlling the driving circuit to drive the driving motor, the braking motor and the steering motor; the surface of the shell comprises a plurality of communication interfaces, a power battery interface, a low-voltage battery interface and a plurality of current output interfaces. The driving circuit is used for receiving power supplied by a low-voltage battery through the low-voltage battery interface and supplying power to the steering motor and the brake motor through the plurality of current output interfaces; the driving circuit is further used for receiving high-voltage direct current output by the power battery through the power battery interface, converting the high-voltage direct current into first alternating current and then supplying power to the driving motor through the multiple current output interfaces. According to the scheme, the number of control chips is reduced, the unsprung mass is reduced, and the integration level and the economical efficiency are improved.

A wireless active suspension system with at least one wireless sensor coupled with at least one unsprung mass of a vehicle is disclosed. The system also includes at least one damper comprising an active valve, the damper being part of a vehicle suspension. The system additionally includes, at least one controller, the at least one controller in wireless communication with the at least one wireless sensor and the at least one damper, wherein the at least one controller receives the sensor data from the at least one wireless sensor and communicates an adjustment command to the active valve to modify a damping characteristic of the at least one damper.

The invention belongs to the field of vehicle under-actuated system control, and particularly relates to an active suspension control method based on a Wuka theory analysis kinetic model and a vehicle. The control method comprises the following steps: firstly, constructing an equivalent 1 / 4 suspension model of a vehicle; then, the roll angle, the pitch angle and the vertical displacement of the vehicle and the displacement of the unsprung mass in each wheel suspension serve as one degree of freedom, and a seven-degree-of-freedom whole vehicle dynamic model based on the active suspension is constructed and converted into a matrix form; then, taking the roll angle, the pitch angle and the vertical displacement following expectation as control targets, establishing a corresponding three-dimensional error equation and a constraint equation, and converting the constraint equation into a matrix form; and finally, designing a control strategy of the vehicle based on the constraint following error, and calculating a servo control force and an additional control force in combination with the real-time state of the vehicle so as to obtain an active control vector. According to the method, the pitching and roll coupling control effect of the vehicle can be remarkably improved, and the dynamic response speed and the control precision of the system are improved.

The invention relates to the technical field of vehicle mass measurement, in particular to a vehicle mass estimation method, device and equipment and a storage medium. The method comprises the steps that the effective bearing area of the air spring, the effective rigidity of the mechanical spring and the unsprung and compensation mass are obtained; collecting the current deviation height of the air spring and the current air pressure intensity in an air spring cavity through a sensor; calculating the first mass of the compressed air spring according to the effective bearing area, the current gas pressure and the gravitational acceleration; calculating a second mass of the compression mechanical spring according to the effective rigidity, the current offset height and the gravitational acceleration; and according to the first mass, the second mass, the unsprung mass and the compensation mass, the estimated whole vehicle mass is obtained. According to the invention, the technical effects of high precision, real-time performance, simple system integration and high environmental adaptability can be achieved when the mass of the whole vehicle is estimated.

The present invention belongs to the field of vehicle engineering technology, and specifically relates to a method for optimizing the rollover index of a multi-axle special vehicle. Step 1: Establish a dynamic model of a multi-axle special vehicle, and test the established multi-axle whole vehicle dynamic model; Step 2: Based on the multi-axle special vehicle dynamic model established in step 1, further establish a rollover dynamic model of the multi-axle special vehicle, and establish a rollover evaluation index LTR for the rollover dynamic model; Step 3: Establish an optimization method for the LTR transient value and warning threshold of step 2. Trucksim is used to establish a dynamic model of a multi-axle special vehicle whose dynamic characteristics are highly consistent with those of the actual vehicle. The influence of the roll moment of the sprung mass and the unsprung mass on the vertical load difference of the wheels on both sides, as well as the influence of vehicle speed and road environment changes on the rollover warning threshold are comprehensively considered. The calculation of LTR and LTR threshold is optimized, thereby improving the rollover warning accuracy of the special vehicle anti-rollover control.

Provided are a suspension system and an active force control method, relating to the technical field of suspensions. The suspension system comprises a first constant flow source (401), a second constant flow source (402), a first damping valve (403), a second damping valve (404), a shock absorber (405), and a liquid container (406). The shock absorber (405) comprises a first liquid cavity (4051) and a second liquid cavity (4052) separated by a piston. The first constant flow source (401) and the second constant flow source (402) are used for outputting liquid at a constant flow rate. The liquid container (406) is used for storing or replenishing liquid flowing in the system. An outlet of the first constant flow source (401) is connected to a first end of the first damping valve (403) and the first liquid cavity (4051). A second end of the first damping valve (403) is connected to the liquid container (406), and the liquid container (406) is connected to an inlet of the first constant flow source (401). An outlet of the second constant flow source (402) is connected to a first end of the second damping valve (404) and the second liquid cavity (4052). A second end of the second damping valve (404) is connected to the liquid container (406), and the liquid container (406) is connected to an inlet of the second constant flow source (402). A suspension system having a high operating bandwidth without additionally significantly increasing unsprung mass can be implemented.

A kind of truck wheel structure of rolling steel, including hub (1), spoke (2) and rim (3), it is characterized in that, wheel diameter is 840mm, the thickness of rim (3) is 60mm, the inner diameter of rim (3) is 720mm, the aperture of hub (1) is 210mm, overall weight is 314kg.The application increases the thickness of rim from 50mm of HESA wheel to 60mm under the premise of ensuring that the mass of wheel does not increase, which will not increase the unsprung mass, suitable for both 70t level truck, also can be used for 60t level truck.The relative HESA wheel of existing 70t level truck has the technical characteristics of high safety factor, light wheel weight, wide application range, and good application prospect.

This invention discloses a power unit for a flying car based on a hub motor, belonging to the field of flying cars. It integrates ground driving and aerial flight into a single power unit, switching modes through changes in operating conditions. The wheel-mounted motors drive the vehicle's motion, while the propeller motors drive the propellers via hub motors mounted on a support shaft. The wheels and propeller share a hollow support shaft for rotational support, and the telescopic hydraulic structure for wheel reversal is integrated with the shock-absorbing suspension structure. The overall design is compact, simplifying the power unit structure and effectively reducing the vehicle's unsprung mass.

The application belongs to the technical field of new energy vehicle dynamics control and energy management, and particularly relates to a power distribution method for a distributed drive vehicle in a variable-gradient transition working condition. First, a four-degree-of-freedom half-vehicle suspension dynamics model containing sprung mass vertical motion, pitching motion and front and rear unsprung mass vertical motion is constructed, Kalman filtering is used to fuse inertial measurement unit and suspension height sensor signals to observe front and rear axle dynamic normal loads in real time; based on the dynamic loads and a magic formula tire model, the upper limits of front and rear motor safe torques are calculated; finally, a hierarchical distribution strategy combining offline global efficiency optimization and online safety constraint compensation is used: an optimal driving mode table and an optimal distribution ratio table are generated offline, and after a reference torque is obtained by online table lookup, constraint checking and axle torque compensation are performed based on a dynamic safety boundary. The application realizes predictive slip control in a cross-gradient transient working condition, ensures driving stability and takes into account system efficiency in all working conditions.

The utility model provides a wheel structure and a vehicle. The wheel structure comprises a tire rim assembly and a hub motor shell which are coaxially arranged. The tire rim assembly comprises a body part and a plurality of mounting parts, the body part forms a first accommodating cavity, each mounting part protrudes out of the body part in the first accommodating cavity, and the plurality of mounting parts are arranged at intervals along the circumferential direction of the body part; at least part of the hub motor shell is arranged in the first containing cavity, the hub motor shell comprises a main body part and a plurality of protruding parts, and the protruding parts correspond to the mounting parts and are arranged in a protruding mode in the axial direction; the protruding parts are connected to the corresponding installation parts so as to connect the tire rim assembly and the hub motor shell. Compared with an existing design, the complex structure of a traditional spoke is reduced, the assembling process of a vehicle is simplified, the production cost and the maintenance difficulty are reduced, meanwhile, the overall weight and the unsprung mass of the wheel are reduced, and the controllability of the vehicle is effectively improved.

The embodiment of the invention relates to the technical field of vehicle intelligent sensing and control, and discloses a road condition recognition method and device and a vehicle, and the method comprises the steps: for at least one wheel of the vehicle, obtaining a first vertical speed signal and a second vertical speed signal corresponding to each wheel; the first vertical speed signal represents the vertical speed of the sprung mass at the corresponding wheel position, and the second vertical speed signal is used for representing the vertical speed of the unsprung mass at the corresponding wheel position; determining an obstacle recognition condition corresponding to each wheel according to the first vertical speed signal and the second vertical speed signal; and determining obstacle information identified by the vehicle according to the obstacle identification conditions of all the wheels. By applying the technical scheme of the invention, the real-time and accurate recognition of the obstacle crossing event of the vehicle can be realized by fusing the dynamic response characteristics of the sprung mass and the unsprung mass and combining the multi-level collaborative arbitration logic.

A surface compactor machine includes an unsprung mass including a cylindrical drum and a cylindrical spool disposed within the cylindrical drum, and a sprung mass rotationally coupled to the cylindrical spool. The sprung mass has a center of gravity that is lower than the center of gravity of the unsprung mass when the surface compactor machine is in a stationary position. The sprung mass includes a traction system that rotates the sprung mass relative to the cylindrical spool. When the traction system rotates the sprung mass relative to the cylindrical spool, the second center of gravity of the sprung mass is rotated out of vertical alignment with the first center of gravity of the unsprung mass, thereby imparting torque to the cylindrical spool that causes rotation of the cylindrical drum.

The invention provides a multi-gear heavy truck electric drive device and a heavy truck, and relates to the technical field of heavy trucks. The multi-gear heavy truck electric drive device comprises a motor stator, a motor rotor, a sun gear, a differential mechanism, a first half shaft, a second half shaft and a variable-speed rotating assembly. The first half shaft is in transmission connection with the second half shaft through a differential; the motor stator is sleeved with the motor rotor, and the motor rotor is hollow and arranged on the first half shaft in a sleeving mode. And the sun gear is connected with the motor rotor and is in transmission connection with the variable-speed rotating assembly. According to the coaxial integrated structure, the rotor cantilever layout of a traditional offset type three-gear electric drive axle is eliminated, bearing unbalance loading and shell stress concentration are reduced, the structural rigidity is enhanced, and the fatigue life is prolonged. Meanwhile, the power source is directly coupled to the output end of the differential mechanism through the planet carrier after being decelerated through the planet row, the gear stage number and meshing loss are reduced, the transmission efficiency and endurance are improved, the unsprung mass, the whole machine size and the assembly complexity are reduced, and high performance, high reliability and engineering manufacturability are considered.

The embodiment of the invention relates to the technical field of vehicles, and discloses a pit identification method and device, and the method comprises the steps: obtaining the vertical speed information of the sprung mass and the vertical speed information of the unsprung mass of each wheel of a vehicle; determining speed characteristic information of each wheel according to the vertical speed information of the sprung mass and the vertical speed information of the unsprung mass of each wheel; and according to the speed characteristic information of each wheel, determining a pit identification result of the vehicle. By applying the technical scheme of the invention, the problem of poor accuracy of pit identification in the prior art can be solved.

The utility model discloses a distributed driving and braking integrated fusion system and a vehicle, and relates to the technical field of electric automobiles, the distributed driving and braking integrated fusion system comprises at least two drivers, at least two brakes and at least two speed reducers; the at least two drivers are used for respectively driving one wheel to rotate; a brake shaft of each brake is connected with a driver, and the brake is used for braking the correspondingly connected driver; each speed reducer is arranged on a brake shaft of the corresponding brake in a sleeving mode, located between the corresponding brake and the corresponding driver in a sleeving mode and used for being connected with a wheel. According to the technical scheme, the unsprung mass of a vehicle can be reduced, the response speed of the vehicle is increased, dust environmental pollution of a brake is reduced, the heat dissipation effect of the brake is improved, the number and the size of parts of the whole vehicle are reduced, the space layout of the whole vehicle is better achieved, it is guaranteed that a half shaft between a wheel and a speed reducer has enough length, and the service life of the vehicle is prolonged. And the requirement for the large movement range of the wheel is met under extreme working conditions.

The invention relates to the technical field of new energy axles, in particular to a hydraulic expansion forming type light-weight new energy axle which comprises a main beam body, end connecting parts arranged at the two ends of the main beam body and a differential mechanism shell connecting base arranged in the middle of the main beam body. The main beam body comprises an outer-layer pipe wall and a lining sleeve arranged on the inner side of the outer-layer pipe wall. The lining sleeve sequentially comprises an A-section reinforcing area, B-section gradual transition areas located on the two sides of the A-section reinforcing area and a C-section non-reinforcing area located on the outer side of the B-section gradual transition areas in the axial direction. And the main beam body is provided with a controllable collapse triggering area in the C-section non-reinforced area. Compared with the prior art, the outer-layer pipe wall and the lining sleeve are laminated in the A-section reinforcing area adjacent to the differential shell connecting base, so that the bending resistance and torsion resistance of the section are improved, and the equivalent wall thickness is increased; and meanwhile, a lining sleeve is omitted and thinned in a C-section non-reinforced area far away from a key load transmission path, so that the material consumption is reduced, and the unsprung mass is reduced.

The application discloses a wheeled armored vehicle dynamics simulation platform and a construction method, equipment and medium thereof, relates to the field of wheeled armored vehicle simulation, and comprises the following steps: based on a Lagrange dynamics method, a dynamics model of a wheeled armored vehicle is constructed; the dynamics model of the wheeled armored vehicle comprises a sprung mass dynamics model, an unsprung mass dynamics model and a turret system dynamics model; and the dynamics model of the wheeled armored vehicle is iteratively simulated and solved to obtain a simulation result of the wheeled armored vehicle. The application improves the refinement degree of the construction of the dynamics model of the wheeled armored vehicle.

The present disclosure relates to a corner module arrangement comprising: a hub connected to a wheel; a body spaced apart from the hub; a first motor disposed within the main body; a second motor disposed within the body and spaced apart from the first motor; a driving member configured to be connected to the first motor and the hub and to provide a driving force to the wheel; and a steering member configured to be connected to the second motor and the hub and adjust a steering angle of the wheel. According to the corner module apparatus, since the main body and the first steering body are supported by the second steering body fixed to the vehicle body, the size of the unsprung mass is reduced, thereby ensuring improved ride comfort and durability.

The double-motor coaxial electric drive axle comprises two motors, two groups of planetary gears, a differential and half shafts assembled at left and right ends of the differential, the motors, the planetary gears, the differential and the half shafts are coaxially arranged, characterized in that the two groups of planetary gears are symmetrically arranged at left and right sides of the differential, left and right ends of a differential case of the differential are respectively connected with output ends of the planetary gears through clutches, the output end of one group of planetary gears is assembled with a differential lock assembly capable of locking the differential function of the differential, and the input end of each group of planetary gears is connected with a shaft end of one motor. The double-motor coaxial electric drive axle can reduce the axial size of the electric drive axle, reduce the unsprung mass, be compatible with more application vehicle models, balance the load dynamic distribution of the double motors, reduce the average energy consumption, improve the endurance mileage, improve the passing performance and improve the adaptability of the vehicle to complex road conditions.

An electronically controlled suspension system for a motor vehicle having a sprung mass, an unsprung mass, and a control arm attached between the sprung and unsprung masses, may include an active mass damper and a driver to control the active mass damper, wherein the active mass damper is mounted to the control arm such that a first force applied by the active mass damper to the unsprung mass through the control arm is a fraction of a total force applicable by the active mass damper and a second force applied by the active mass damper to the sprung mass through the control arm is a remaining fraction of the total force, wherein the fraction is defined by a ratio of a distance of the active mass damper from the one end of the control arm and a length of the control arm.

The wheel-side drive structure of a rigid dump truck for mining includes a gearbox, a wheel-end planetary gear set mounted on the wheel hub, and an MCU controller mounted on the rear of the gearbox. The gearbox comprises a motor unit controlled by the MCU controller, a planetary reduction assembly formed by at least two single-stage planetary gear sets connected in series, and a clutch assembly mounted on the gearbox housing and cooperating with the planetary reduction assembly. The motor unit is formed by at least two axial flux motors connected coaxially in series. The input end of the planetary reduction assembly is connected to the motor unit, and the output end is connected to the input end of the wheel-end planetary gear set. The planetary reduction assembly adjusts its speed ratio according to the control of the clutch assembly. This invention ensures independent control of wheel power, reduces unsprung mass, achieves multi-level torque output, adapts to power demands in high-load, multi-terrain scenarios, improves the coverage of the motor's high-efficiency range, enhances the vehicle's adaptability to various operating conditions, and improves the reliability of the wheel-side drive.

The invention relates to a vehicle and a steering module thereof, the steering module comprises a steering driving mechanism, a speed reducing mechanism and a transmission mechanism, at least one of the steering driving mechanism and the speed reducing mechanism is suitable for being mounted on a vehicle body, the transmission mechanism comprises a first connecting piece and a second connecting piece, and the first connecting piece and the second connecting piece are rotatably connected; the second connecting piece is suitable for being connected with a steering knuckle connected with a steering wheel, and the power output end of the steering driving mechanism is in transmission connection with the first connecting piece to drive the first connecting piece to rotate. By using the steering module, the unsprung mass of the vehicle can be reduced, the grounding performance of the steering wheel and the controllability of the vehicle can be improved, the stability of the steering module is improved, and therefore the comfort and the controllability of the vehicle can be improved.

The double-swing-arm steering and driving integrated angle module suspension device comprises a steering mechanism connected between a hub motor and a vehicle frame, and the steering mechanism comprises a steering motor, a speed reducer, an absolute value encoder and a steering knuckle; the speed reducer comprises a first-stage speed reduction assembly and a second-stage speed reduction assembly, the first-stage speed reduction assembly is a planetary speed reducer, and the second-stage speed reduction assembly comprises a shell and a worm and gear transmission mechanism arranged in the shell; an output shaft of the absolute value encoder is connected with the worm shaft; the steering knuckle is fixed with the worm wheel shaft, one side of the steering knuckle is connected with the frame through a damping mechanism, and the other side of the steering knuckle is connected with the hub motor through a brake mechanism; the steering mechanism and the double-swing-arm damping suspension mechanism are integrated on the hub motor, the chassis space is saved, the unsprung mass is reduced, and the steering mechanism can achieve independent steering torque and position control over each wheel through cooperation of a multi-stage speed reduction and torque rise structure composed of planetary speed reduction and worm gears and worms and an absolute value encoder.

This invention discloses a power unit for a flying car based on wheel-side motors, belonging to the field of flying cars. This power unit changes the traditional power unit layout of convertible flying cars, integrating the drive motor and reducer onto the frame to form a wheel-side motor drive mode. Power transmission between driving and flight modes is achieved through bidirectional output wheel-side motors and a set of gears that drive the propeller. The wheels and propeller share a hollow support shaft, with inner and outer bearings supporting the rotation of both. A telescopic damping mechanism switches between flight and driving modes and provides vibration damping in driving mode. This invention avoids the structural complexity and high unsprung mass problems associated with integrating drive motors, reducers, and clutches into the wheel system in existing technologies, resulting in a compact structure and low unsprung mass.

According to the full-vector drive-by-wire chassis steering device, the steering motor is arranged to drive the steering converter to further drive the steering pull rod to move, the steering pull rod is movably connected with the steering knuckle arm to finally drive the wheels to steer, compared with a traditional drive-by-wire chassis steering system, each wheel independently steers, and the problems that the steering angle is limited, and the steering efficiency is high are solved. Meanwhile, a steering motor is arranged in the middle of the chassis in a concentrated mode, the transverse size of the drive-by-wire chassis is reduced, the drive-by-wire chassis is suitable for operation of multiple scenes, in addition, an upper cross arm and a lower cross arm are connected with a whole vehicle frame, limitation of a drive-by-wire chassis angle module steering system is broken through, a steering device is transferred to the vehicle frame, and therefore the steering effect is improved. In conclusion, the drive-by-wire chassis has the advantages that independent steering of each wheel can be guaranteed, omni-directional driving of the drive-by-wire chassis can be achieved, the size is reduced, and the drive-by-wire chassis has the advantages of being high in practicability and wide in application range.

The utility model belongs to the technical field of automobile suspensions, and relates to a multi-connecting-rod independent integral axle composite suspension and a chassis, suspension assemblies are symmetrically installed at the two ends of a main axle, and each suspension assembly comprises an upper swing arm, a lower swing arm, a wheel center stand column, a direction pull rod and a shock absorber. The bottom of the wheel center stand column is in spherical hinge connection with the main axle and the girder through a lower swing arm and a rear dragging arm respectively, the top of the wheel center stand column is in spherical hinge connection with the main axle through an upper swing arm, the middle of the upper swing arm is rotationally connected with one end of an inner swing arm through a first pull rod, and the inner swing arm is connected with a shock absorber through a second pull rod. A sliding groove is formed in the main axle, the inner swing arm is fixedly connected with an inner swing arm connecting rod, and the inner swing arm connecting rod horizontally slides in the sliding groove in a limited mode. A pure mechanical structure is adopted to combine an independent suspension and an integral bridge suspension into a whole, the working modes of the independent suspension and the integral bridge suspension are switched according to the compression stroke of the suspension, the unsprung mass of a traditional hard bridge is reduced, and comfort and controllability are improved.

The present invention relates to the field of automobiles and discloses a two-stage suspension active heat dissipation wheel hub motor drive assembly, comprising: a planetary gearbox, a wheel component and an active heat dissipation fan, a first-stage in-wheel annular flexible suspension, a wheel hub motor, a brake assembly and a second-stage suspension; the first-stage in-wheel annular flexible suspension is arranged between the wheel component and the wheel hub motor, its outer side is connected to the wheel component, and its inner side is connected to the output side of the wheel hub motor; the wheel hub motor is arranged on the inner side of the first-stage in-wheel annular flexible suspension, and the wheel hub motor stator is connected to one end of the second-stage suspension through a steering knuckle; the present invention reduces the impact of road impact on the wheel hub motor by arranging a two-stage suspension, integrates the drive, steering and transmission systems between the two-stage suspension, reduces the unsprung mass of the vehicle, solves the problems of complex structure and poor integration of the wheel hub motor drive system, and improves the heat dissipation performance by arranging a heat dissipation fan for active heat dissipation.

The utility model provides a vehicle suspension system and a vehicle. The vehicle suspension system comprises an upper swing arm, a lower swing arm, a vibration reduction assembly and a steering knuckle used for installing a hub motor. The steering knuckle is rotationally connected between the upper swing arm and the lower swing arm; one end of the upper swing arm away from the steering knuckle and one end of the lower swing arm away from the steering knuckle are connected with an auxiliary frame; the upper end of the vibration reduction assembly is connected with the auxiliary frame, and the lower end of the vibration reduction assembly is rotationally installed on the lower swing arm. The vertical height and the overall installation size of the vehicle suspension system are reduced, meanwhile, the unsprung mass is reduced, the overall weight and the impact load of the vehicle suspension system are reduced, and the stability of a vehicle during running is improved.