672 results about "Dynamometer" patented technology

The invention relates to the technical field of vehicle braking control, and discloses a vehicle braking control system based on a high-speed permanent magnet synchronous motor, which comprises a state sensing module, a braking force calculation module, a braking force control module and a braking force control module, the torque distribution module distributes the total braking torque into a predictable regenerative component and a precisely matched friction component, a deterministic regenerative braking force datum line is established, a braking system is converted into stable output control from passive response energy fluctuation, and linear mapping of pedal travel and deceleration is achieved; and meanwhile, by combining road bumping degree perception and model online correction, the output stability is kept under the complex working condition, and the technical problem that energy recovery and control quality in a hybrid braking system are difficult to consider at the same time is solved.

The invention relates to the technical field of electromagnetic compatibility testing, in particular to an electromagnetic compatibility testing device and method for the shaft current of a hub motor, and the device comprises a shielding chamber, a system master controller, a dynamometer, a hub motor tool and a testing system. A dynamometer, a hub motor tool and a test system are arranged in the shielding chamber; the hub motor tool is used for installing and fixing a hub motor to be tested. An output shaft is designed at the rotor end of the hub motor, and the hub motor is connected with the dynamometer through the output shaft. The test system is used for measuring the shaft current of the hub motor; the system master controller is used for controlling the wheel hub motor to operate under various working conditions and collecting shaft current under each working condition; and obtaining an electromagnetic compatibility test result according to the shaft current. The electromagnetic compatibility and reliability of the hub motor and the control system thereof can be improved.

A method of testing a vehicle includes positioning the vehicle on a dynamometer, operating a propulsion system to rotate drive wheels at a one or more predetermined speeds while actively adjusting a rotational position of a steering wheel to maintain straight vehicle travel on the dynamometer, measuring angle data of the steering wheel during the active adjusting of the rotational position of the steering wheel, checking the measured angle data to determine if it is outside a predetermined angular range, and outputting, in response to the angle data being outside the predetermined angular range, at least one of a repair ticket and a vehicle fault code.

The invention relates to a transmission shaft bench test device and method, and the device comprises a bumping sliding mechanism which comprises a pedestal, the pedestal is in sliding connection with a sliding platform through a sliding rail, and the pedestal is provided with a first actuator which drives the sliding platform to do reciprocating lifting motion in the length direction of the sliding rail; the side-tipping rotating mechanism comprises a side-tipping platform rotationally connected with the sliding platform through a rotating shaft, and a second actuator for driving the side-tipping platform to rotate around the rotating shaft is connected between the sliding platform and the side-tipping platform; the steering driving mechanism comprises a gearbox fixed on the roll platform, an input shaft of the gearbox is connected with a driving motor through a coupler, an output shaft of the gearbox is connected with a transmission shaft to be tested, and the transmission shaft to be tested is connected with a dynamometer. Performance and endurance tests of the transmission shaft under multiple working conditions can be simulated and detected more truly, and objectivity and accuracy of detection of the detected transmission shaft are improved.

According to the engine emission digital design system and method based on the virtual whole vehicle, the engine, the temperature control loop, the dynamometer and the emission analysis module are arranged on the bench subsystem, multiple circulation working conditions are pre-stored through the circulation working condition model in the control subsystem, and the main control model calls the target circulation working condition according to the design requirement; the driving control model simulates a vehicle driving state; obtaining a road resistance curve through a road resistance model; the engine compartment temperature control model controls the temperature control loop to realize temperature control; the engine working condition model controls the engine to work under the target engine working condition; the emission analysis module receives emission of an engine and analyzes emission components, and the master control model receives the emission components and judges whether the current emission of the engine reaches the standard or not. According to the scheme, engine emission design development under the condition that no physical whole vehicle exists can be achieved, the whole vehicle development period is greatly shortened, the development efficiency is improved, and the development cost is saved.

The invention discloses a posture-adjustable underwater vehicle propeller multifunctional testing device and method. In the device, a first guide mechanism and a second guide mechanism which are arranged in parallel extend in the first direction and are both arranged outside one side of the top surface of a water tank in the height direction; one end of the slider mechanism is in sliding fit with the first guide mechanism, and the other end of the slider mechanism is in sliding fit with the second guide mechanism; one end of the posture adjusting mechanism is fixed with a box body mounted on the sliding block mechanism; a first spring and a second spring are installed on the two sides of the box body in the first direction. The other end of the first spring and the other end of the second spring are provided with a first dynamometer and a second dynamometer. The propeller driving module and the other end of the attitude adjusting mechanism are fixed through a fixing piece; propellers are mounted at the output shaft ends of the propeller driving modules; the hydrophone is installed on the side, close to the propeller, of the propeller driving module. The device is simple in structure, convenient to operate and easy to machine and popularize, and compared with a common test system, the device can simulate propeller flow noise characteristics under different working conditions and different postures.

The invention discloses a B-axis power knife rest comprehensive performance test bench and method. The B-axis power knife rest comprehensive performance test bench comprises a base, a B-axis power knife rest, a simulation knife handle assembly, a knife rest mounting seat, an axial displacement table, a dynamometer assembly, an axial force loading assembly, a radial force loading assembly, a deformation measurement assembly, a temperature measurement assembly, a control system and a data acquisition system. The B-axis power tool rest is fixedly connected to the base through the tool rest installation base, the simulation tool handle is installed on the B-axis power tool rest, the axial displacement table is installed on the base, the power measuring assembly and the axial force loading assembly are coaxially combined and installed and then fixedly connected to an axial displacement table moving plate, and the radial force loading assembly and the deformation measuring assembly are installed on an axial displacement table fixing plate. The testing device is simple and compact in structure, large in loading force range and capable of supporting performance testing of B-axis power tool rests of various models, various stations and under multi-dimensional force loading; the test method is simple.

The invention provides a vehicle simulation test device and a vehicle simulation test method. The device comprises a first base, a second base and four dynamometers, the dynamometer comprises a lifting assembly, and a steering assembly, a roll assembly and a roller assembly which are arranged on the lifting assembly. The lifting assembly is used for lifting the steering assembly, the steering assembly is used for rotating the roll assembly, and the roll assembly is used for the roll roller assembly. Through the lifting assemblies which are arranged on the left side and the right side of the tested vehicle and have different heights and the side inclination angles of the side inclination assemblies which are adaptively adjusted according to the angles of the lifting assemblies on the left side and the right side of the tested vehicle, the driving conditions of the vehicle at the transverse gradient and wheel side inclination are simulated. Through the lifting assemblies which are arranged at the front end and the rear end of the tested vehicle and have different heights, the driving condition of the vehicle at the longitudinal slope is simulated; the roller assembly is driven through the steering assembly, and the driving condition of vehicle steering is simulated.

The invention discloses a composite board bonding strength detection device and detection method, and relates to the technical field of bonding strength detection. Comprising a base and a rack fixedly connected to the upper end of the base, first sliding grooves are formed in the inner side of the rack, a cross beam is fixedly connected between the first sliding grooves, a dynamometer is fixedly connected to the lower end of the cross beam, connecting bases are fixedly connected to the lower end of the dynamometer and the upper end of the base, and clamps are arranged at the ends, close to each other, of the connecting bases; the first-stage braking assembly is arranged in the first sliding groove, located between the upper end of the cross beam and the top of the rack and used for counteracting movement inertia of the cross beam; when instantaneous force is applied to the non-Newtonian fluid through the piston disc, the non-Newtonian fluid is rapidly gathered to form a rigid structure to improve the hardness, so that the displacement of the piston disc is prevented, the cross beam is prevented from continuously displacing when being subjected to inertia, the position fluctuation of the cross beam caused by inertia is reduced, the occurrence probability of overshoot reading and return stroke reading is reduced, and the accuracy of measurement is improved. And the accuracy of detection data is improved.

The invention discloses a clutch torque transmission characteristic dynamic test method, and relates to the field of clutch control, and the method comprises the steps: building a test bench, and separating a clutch, the transmission is put into a direct gear; presetting working condition parameters, wherein the working condition parameters comprise an output dynamometer target rotating speed N, an input dynamometer target rotating speed N and a clutch actuator target initial position P; obtaining a preset target torque loading strategy; according to the preset target torque loading strategy, the current position of a clutch actuator is controlled, a clutch friction pair is made to move relatively, and meanwhile test data are collected; acquiring a preset temperature threshold value; according to the test data, whether the clutch reaches a preset temperature threshold value or not is judged; if not, continuing to execute the preset target torque loading strategy; if yes, acquiring a target test position, and generating test data of the target test position; and preprocessing the test data according to the target test position test data, and generating an all-position test result.

The invention provides a multi-motor cooperative control system based on an open-source real-time operating system, and relates to the technical field of multi-motor control, the system calculates a target rotating speed through an upper computer controller, and ensures that a rotating speed instruction can be simultaneously sent to a plurality of dynamometers by using a real-time controller. By means of the EtherCAT high-speed communication protocol, the system can synchronously transmit instructions with extremely low delay, and it is guaranteed that all the drivers receive and execute the same operation instructions at the same moment. In addition, by setting consistent acceleration and deceleration time and PI control parameters of a speed loop and a current loop in the driver, the synchronism and response performance of the system are further optimized. The invention aims to realize high-precision synchronous operation.

A portable on-vehicle dynamometer comprises a containment chassis (2), a drum (3) rotatably housed in said containment chassis (2) to rotate around a load shaft (4), mechanical transmission means (5) adapted to connect said load shaft (4) to the hub of a wheel of the vehicle being measured to transfer the motion of the vehicle engine to said drum (3), wherein said mechanical transmission means (5) comprise a connection flange (6) provided with a central axis of rotation and suitable to be fixed stably but removably to the hub of the vehicle wheel, wherein said mechanical transmission means (5) further comprise a CV joint (7) adapted to connect said flange (6) with one end of said load shaft (4) and designed to allow mutual angular regulation between said load shaft (4) and the central rotation axis of said flange (6) with respect to at least one inclination plane.

The utility model discloses a stainless steel bar fixed-length cutting device, which relates to the technical field of cutting and comprises a lifting plate. A driving wheel is connected to a mounted bearing of the lifting plate in a matched mode, a rotating shaft of the driving wheel is connected with a second driving motor in a matched mode, and then a meter is arranged on one side of the driving wheel and fixed to the lifting plate through a bolt. A bearing frame is arranged on one side of the lifting plate, the bearing frame is arranged in a V shape, and a rotating roller is arranged on the inner side of the bearing frame; a laser cutting machine is arranged above the lifting plate; according to the laser cutting machine, the driving shaft of the second driving motor drives the transmission wheel to rotate, so that power is provided for a to-be-cut bar, the meter can meter the length and cut in a fixed-length mode, the bearing frame plays a role in bearing, the to-be-cut bar can be driven to rotate under rotation of the rotating roller, and circumferential cutting of the laser cutting machine is facilitated.

The invention relates to the technical field of suction cup testing, and discloses a ceramic suction cup suction testing device which comprises a suction cup, a testing piece, a testing box, a testing assembly, a reset assembly, a material changing assembly and a vacuum pump. The test assembly comprises a push-pull dynamometer and a power assembly, and the power assembly is used for driving the push-pull dynamometer to apply thrust to the test piece; the reset assembly comprises a reset plate, a first air cylinder, a guide plate and two limiting plates, the top of the guide plate is flush with the top of the suction cup, and a first sliding way is defined between the two limiting plates so as to guide the test piece; the material changing assembly comprises a discharging groove, a feeding cylinder and a discharging plate, the discharging groove is used for receiving the test piece, the top of the feeding cylinder is communicated with the outside of the test box, a discharging hole communicated with the discharging plate is formed in the bottom of the feeding cylinder, and the discharging plate is communicated with the first sliding way. The test piece can be pushed back to the suction cup again, the suction force of the suction cup can be repeatedly tested, the damaged test piece can be replaced, and the test accuracy can be improved.

The invention provides an engine in-the-loop semi-physical simulation test platform for a hybrid electric vehicle, which relates to the technical field of automobile engine testing and comprises a real-time virtual simulation platform and an engine transient test platform. The real-time virtual simulation platform comprises a driver model module, an energy management strategy module, a power assembly module, a vehicle dynamics module and an exhaust temperature control module. The driver model module carries out data calculation according to the output of the vehicle dynamics module, a vehicle dynamics model calculates a dynamics state threshold value, and energy management is carried out through the energy management strategy module; the engine transient test platform comprises an engine controller, a high-dynamic electric dynamometer, a dynamometer control system, an engine, a post-processing system, an emission detection system and a post-processing temperature control system. According to the platform, a real engine pedestal, a digital hybrid power whole vehicle model and a rapid prototype controller are deeply integrated, so that the model reusability is improved.

The utility model relates to a portable dynamometer torque calibration device, and belongs to the technical field of rack torque calibration. Comprising a force arm, one end of the force arm is fixedly connected to a dynamometer, the other end of the force arm is provided with a force value sensor, a force applying mechanism is arranged below the force value sensor and applies force to the force value sensor, and the force value sensor is used for detecting a torque value and then comparing the torque value with a torque value of the dynamometer. The force applying mechanism comprises a bottom plate, a fixed pulley is arranged on the bottom plate, a movable pulley is arranged at the bottom of the force value sensor, a supporting rod is arranged on the bottom plate, a force applying lever obliquely arranged downwards is hinged to the supporting rod, a chain is wound around the fixed pulley and the movable pulley, and one end of the chain is arranged at the front end of the force applying lever. And the other end of the chain is fixed on the bottom plate. According to the invention, when the force application mechanism is used for applying force, the force application is very labor-saving, the operation is convenient, time-saving and labor-saving, the quick calibration of the dynamometer torque on the rack site is realized, and the calibration efficiency is improved.

The present invention relates to the technical field of ultrasonic surface strengthening. Provided are a test device and test method for a track interference behavior in ultrasonic impact strengthening. The device comprises an object table, an X-Y-Z-axis motion control module and a workpiece rotation motion module being provided on the object table, and the workpiece rotation motion module being suitable for clamping a workpiece and driving the workpiece to rotate. The X-Y-Z-axis motion control module is connected to an ultrasonic impact strengthening execution module, an extending end of an air cylinder is connected to an ultrasonic transducer, and a booster is connected to the ultrasonic transducer so as to convert an input electric power into a mechanical power and enable same to act on the booster. A rolling head is connected to the tail end of the booster. A dynamometer is provided between the ultrasonic transducer and the booster for measuring a static pressure acting on the workpiece in real time, and feeding the static pressure back to a control system, such that the rolling head keeps a constant static pressure on the workpiece. The solution can improve the strengthening effect on surfaces of parts.

The invention relates to an electric drive system efficiency test compensation method, a storage medium and a program product, and relates to the technical field of new energy automobiles. The method is executed by a rack control system, and comprises the following steps: acquiring mechanical friction torque and friction mechanical power when a dynamometer idles; collecting the line resistance of a direct current bus between a power battery of the vehicle and a motor controller and the line resistance of a three-phase end line between a motor of the vehicle and the motor controller before the efficiency test; relevant parameters in the efficiency testing process are collected, wherein the relevant parameters comprise direct-current bus current, direct-current bus power, U-phase current, V-phase current, W-phase current, three-phase electric power, dynamometer rotating speed, dynamometer actual measurement torque and dynamometer mechanical power; according to the friction mechanical power, the line resistance of the direct current bus, the line resistance of the three-phase end line and related parameters, the efficiency compensation of the electric driving system is calculated, so that the accuracy of the efficiency test compensation calculation of the electric driving system is improved.

A new energy automobile driving motor comprehensive test device disclosed by the present invention comprises a test bench and a sliding frame fixedly installed on the upper surface of the test bench, the sliding frame is slidably connected with a transmission mechanism, the transmission mechanism is in engaged connection with a turntable mechanism, and the upper end of the turntable mechanism is fixedly connected with a driving motor. One side of the driving motor is fixedly connected with a pulling mechanism through a mounting frame, the driving motor is connected with a connecting mechanism in an inserted mode through a motor output shaft, the transmission mechanism comprises a sliding table, a transmission rod fixedly installed on the lower surface of the sliding table through a fixing block and a screw connected with the interior of the transmission rod in a meshed mode, and a spiral groove is formed in the outer surface of the transmission rod. The inner wall of the spiral groove is slidably connected with a sliding block. According to the invention, the driving cylinder and the contact strip are combined for use, so that the connection of the driving motor and the dynamometer can be quickly positioned, and the complex step of manual repeated positioning is avoided, thereby achieving the effect of high testing efficiency.

A cantilever type tension sensor with a probe structure relates to the technical field of force measuring structures and comprises a knife handle dynamometer, a knife head is detachably fixed at the head end of the knife handle dynamometer, a sensor signal leading-out wire is detachably fixed at the tail end of the knife handle dynamometer, and an elastomer beam is arranged on the knife handle dynamometer. And a metal resistance strain gauge connected with a sensor signal outgoing line is arranged on the elastomer beam. According to the utility model, the problem that the force value in the process cannot be detected and controlled in real time because the force value is controlled by the current of the motor or experience or displacement in the prior art is solved.

The application discloses an outboard motor testing system, which comprises a water tank, a supporting device for supporting the outboard motor above the water tank, two height adjusting mechanisms installed on the supporting frame, a turnover mechanism installed on the height adjusting mechanisms, a crossbeam installed between the two turnover mechanisms, a clamping device arranged in the water tank for clamping and fixing the testing end of the outboard motor, and a dynamometer arranged outside the water tank and connected with the propeller shaft of the outboard motor through a transmission shaft mechanism. The outboard motor testing system can improve the testing precision and efficiency.

The utility model provides an unwinding strength testing device, which relates to the technical field of unwinding strength testing and comprises a base, a fixing component is arranged at the top end of the base close to the front side, a testing component is arranged at the top end of the base close to the back side, and a first sliding groove is formed in the top end of the base close to the front side. A first sliding groove is formed in the top end of the base, a lead screw is arranged in the first sliding groove, a first sliding block is arranged at the position, extending to the top end of the first sliding groove, of the periphery of the lead screw, a second sliding groove is formed in the position, close to the back face, of the top end of the base, and a second sliding block is arranged in the second sliding groove; by using the lead screw, the first sliding block, the fixed frame, the second sliding block, the clamping seat and the spring dynamometer, the unrolling strength test can be simply and effectively performed, the mechanical mechanism is simple, the maintenance cost is greatly reduced, and the use requirements of small enterprises are effectively met.

The utility model discloses an automobile wire harness tensile test tool, and relates to the technical field of automobile production. The device comprises a workbench, the top of the workbench is fixedly connected with a limiting shell, and the interior of the limiting shell is fixedly connected with a dynamometer; a protection assembly is arranged at the bottom of the workbench and comprises vertical plates, the vertical plates are fixedly connected to the two sides of the bottom of the workbench, and a transmission motor is fixedly connected to one side of each vertical plate. Through work of a transmission motor, a first threaded rod can be driven to rotate, then a first threaded sleeve is driven to move, the first threaded sleeve drives a protection plate to move through a movable plate, meanwhile, the first threaded rod can drive a worm to rotate, the worm drives a worm gear to rotate, and therefore a second threaded rod rotates; and a second threaded rod can drive a second threaded sleeve to move, and the second threaded sleeve drives a transverse plate to move, so that the purpose of protecting a tester during a tensile test can be achieved.

The invention provides a device and a method for testing the shearing and compression performance of a helicopter engine damping part. The shearing performance testing device comprises a base (1), a fixed support (3), a stress application lead screw (4), a tension sensor (5), a dynamometer (6), a double-fork (7), an arc-shaped pulling plate (8), a mounting support (10), a dial indicator (11) and a magnetic base (12). The compression performance testing device comprises a base (1), a fixed support (3), a stress application lead screw (4), a tension sensor (5), a dynamometer (6), a mounting support (10), a dial indicator (11), a magnetic base (12), a single lug (13) and a square loading frame (14). Measurement of shear and compression deformation displacement of the engine damping member is realized, shear and compression performance of the engine damping member is verified, and the installed damping member is ensured to effectively prevent transmission of vibration waves and weaken harm of inertial impact to an engine. And the situation that the installation of the damping piece with substandard static performance affects the flight safety is avoided. The test cost is low, the operation is simple, the test efficiency is high, and the deformation displacement of the damping member can be visually reflected.

The invention relates to the technical field of motor testing, in particular to a permanent magnet synchronous motor testing device and a method thereof.The permanent magnet synchronous motor testing device comprises a testing table, a permanent magnet synchronous motor and a load dynamometer installed on the testing table, a transmission box is installed on the testing table through bolts, and a main spiral gear is rotationally connected to the inner side of the transmission box; a connecting shaft is fixedly connected between the side wall of the main spiral gear and the output end of the load dynamometer, a base is fixedly connected to the inner bottom end of the transmission case, and a rotating shaft is rotatably connected to the base in a penetrating mode. The to-be-tested permanent magnet synchronous motor is installed on the other side of the transmission case, and then after a previous permanent magnet synchronous motor is tested, rapid switching of the tested permanent magnet synchronous motor can be completed by controlling closing of the corresponding electromagnetic jaw clutch, so that the other motor can be installed and leveled during motor testing, and a large amount of installation time is saved.

The invention relates to the technical field of automobile power system testing, in particular to a dynamometer and HIL integrated finished automobile multi-working-condition automatic testing and calibrating system, which combines a dynamometer rack with a hardware-in-the-loop simulation technology, develops a dynamics scene model covering conventional and limiting working conditions, and improves the testing accuracy of the dynamometer rack and the hardware-in-the-loop simulation technology. The conversion and interaction of virtual and real signals are realized through road load simulation and energy consumption simulation; the dynamometer and HIL integrated whole vehicle multi-working-condition automatic test calibration system is composed of IO, DOE, automatic calibration, objective evaluation and other functional modules, can automatically execute test cases, complete parameter calibration and optimization analysis, and perform objective evaluation on test results, and can realize multi-working-condition test, reduce the dependence on real vehicle road test, improve the test efficiency and comprehensiveness, and reduce the test cost. The controller development period is shortened, and the cost is reduced.

The invention discloses a torque measurement calibration method for a high-power dynamometer, and the method comprises the following steps: a torque measurement calibration device for the high-power dynamometer and the high-power dynamometer are installed, and the torque measurement calibration device for the high-power dynamometer comprises a lever, a standard dynamometer, a hydraulic force application device, a display control terminal and an inclinometer, one end of the lever is connected with the high-power dynamometer, the other end of the lever is attached to a pressure head of the standard dynamometer, the standard dynamometer is connected with the hydraulic force application device, the hydraulic force application device is connected with the display control terminal, the display control terminal communicates with the standard dynamometer and the inclinometer, the inclinometer is arranged on the lever, and the pressure head of the standard dynamometer is a conical pressure head. The lever is provided with a conical force application hole matched with a standard dynamometer pressure head; determining a force application hole position of the torque measurement calibration device of the high-power dynamometer; zero setting is carried out on the high-power dynamometer indicating device; and determining the torque metering accuracy of the high-power dynamometer. The method has the advantages that the length of the force arm is accurate and constant, the error is small, and the operation is safe.

The invention relates to a torque sensor high-speed rotation temperature coupling dynamic calibration system and calibration method. The device comprises a rotary driving device; one end of the standard torque sensor is connected with the output end of the rotary driving device; according to the temperature loading device, a mechanical rotor of a to-be-tested torque sensor is rotationally connected to a temperature cabin, and one end of the mechanical rotor of the to-be-tested torque sensor is connected with the other end of the standard torque sensor. The torque loading device comprises a magnetorheological fluid coupler and a dynamometer, the magnetorheological fluid coupler comprises a magnetorheological fluid box body, a coupler rotor, a slip ring electricity leading device and a rotor excitation coil, one end of the coupler rotor is connected with the other end of the mechanical rotor, and the rotor excitation coil is powered by the slip ring electricity leading device; the slip ring electricity leading device comprises a slip ring electricity leading device rotor assembly and a slip ring electricity leading device stator assembly. The other end of the coupler rotor is connected to the dynamometer. And high-precision dynamic calibration under the conditions of high-speed rotation and wide temperature range is realized.

The embodiment of the invention provides a collaborative transportation method, a control system and a collaborative detection device, and belongs to the technical field of intelligent transportation. According to the invention, a function type and a function triggering mechanism of the collaborative transport vehicle are designed; determining deployment of a cooperative detection device and deployment of a sensor according to the position information of the vehicle, and obtaining deployment information; obtaining transportation monitoring data according to the deployment information; according to the transportation monitoring data, obtaining control adjustment reference value information; and according to the function category, the function triggering mechanism and the control adjustment reference value information, determining a control instruction of collaborative transportation. The cooperative detection device comprises a bearing disc, a rotating shaft, a shaft sleeve, a fixing plate, an anti-falling plate, a fixing bolt, a stop bolt and a spring dynamometer group. The method does not depend on wireless electronic communication, has no fleet scale upper limit, takes vehicle collaboration and cargo safety as the primary principle, and realizes cargo collaborative transportation through simple monomer rule design.

The invention relates to a four-wheel drive power assembly rack convenient for centering adjustment of a vehicle, and the rack comprises a test platform which is provided with a plurality of dynamometers, and the dynamometers are located at the two sides of the test platform respectively, and are used for connecting a tested vehicle front hub and a tested vehicle rear hub respectively; the lifting platform comprises a lifting mechanism which is fixed on the test platform and is used for lifting the tested vehicle to a set height, and a sliding plate platform which is located at the top of the lifting mechanism and is used for adjusting the position posture of the tested vehicle; and the supporting tool comprises whole vehicle supporting seats which are respectively fixed at the sides of the dynamometers, and the top of each whole vehicle supporting seat is connected with a transmission mechanism which connects the front hub of the tested vehicle or the rear hub of the tested vehicle with the dynamometers. The sliding plate platform can move back and forth, left and right and rotate relative to the lifting mechanism, so that the front hub of the tested vehicle and the rear hub of the tested vehicle are quickly connected with the dynamometer after the centering posture adjustment of the tested vehicle is completed.