CN110132585A

CN110132585A - A kind of Electric Motor Wheel multi-function test stand based on virtual instrument and sound state vertical loading device

Info

Publication number: CN110132585A
Application number: CN201910536584.7A
Authority: CN
Inventors: 杨坤; 王杰; 田昭贤; 王玉成; 李跃伟; 陈玉; 李敏; 李红旗; 韩博
Original assignee: Shandong University of Technology
Current assignee: Shandong University of Technology
Priority date: 2019-06-20
Filing date: 2019-06-20
Publication date: 2019-08-16
Anticipated expiration: 2039-06-20
Also published as: CN110132585B

Abstract

A kind of Electric Motor Wheel multi-function test stand based on virtual instrument and sound state vertical loading device includes rack main control module and test-bed；Rack main control module include: host computer, PXI real-time control system, for PXI real-time control system a model NI PXI-8512 CAN communication card and a model NI PXI-6221 data collecting card；The test-bed includes pedestal, sound state vertical load loading device, Electric Motor Wheel, Electric Motor Wheel controller, roller, torque and speed sensors, dynamometer machine, Dynamometer Control device, shaft coupling；The testing stand can the various load that are subject to during road driving of the electric wheeled Electricmotor car wheel of accurate simulation for exploitation Electric Motor Wheel and its performance can be tested experimental enviroment close to real vehicle is provided more particularly to vertical load suffered by accurate simulation Electric Motor Wheel.

Description

It is a kind of to be tried based on the Electric Motor Wheel of virtual instrument and sound state vertical loading device synthesis Test platform

Technical field

The present invention relates to electric vehicle engine bench test technologies, more particularly to one kind to be based on virtual instrument and sound state Plumb load The Electric Motor Wheel multi-function test stand of device.

Background technique

Engine bench test is applied in automobile and assembly development field more, in automotive development early period, passes through automobile bench test, energy The operating conditions such as starting, acceleration, climbing, braking of enough simulated automotives, precision as can close to real vehicle roadway experiment, then can be improved vehicle and The safety of component experiment, reduces the dependence to experimental site, reduces the cost of control system's development, can more effectively shorten out Send out the period.

Electric Motor Wheel electric vehicle is as a kind of novel electric vehicle, because eliminating speed changer, clutch, differential mechanism, semiaxis etc. Transmission parts, and vehicle transmission efficiency is improved, chassis structure is simplified, is one of the important directions of new-energy automobile development.

But Electric Motor Wheel electric vehicle also brings following problem while bringing above-mentioned advantage: using vehicle after Electric Motor Wheel Nonspring carried mass change greatly, therefore the variation of analysis of wheel vertical load is affected to electric wheeled whole electric vehicle performance, Can the variation that analysis of wheel vertical load in real vehicle driving process accurately be simulated also just become the key of Electric Motor Wheel testing stand exploitation.

Summary of the invention

Based on the above issues, the present invention proposes that a kind of Electric Motor Wheel based on virtual instrument and sound state vertical loading device is comprehensive Testing stand scheme is closed, which can be used for developing the electronic wheel system of verifying, can be improved Electric Motor Wheel electric vehicle and component is real The safety tested reduces the dependence to experimental site, reduces control system's development cost；The testing stand is by moving static vertical Load charger the vertical dynamic as caused by acceleration, deceleration and Uneven road can carry in accurate simulation vehicle traveling process Lotus variation can provide the environment close to real train test for test Electric Motor Wheel performance.

The present invention proposes a kind of Electric Motor Wheel multi-function test stand based on virtual instrument and sound state vertical loading device, the examination Platform is tested to be made of rack main control module and experimental stand.

Rack main control module is made of host computer and PXI real-time control system, and host computer passes through with PXI real-time control system TCP/IP network connection.

Host computer is ordinary PC, and LabVIEW software and Matlab/Simulink software are housed on host computer, upper There are pilot model, driving cycle model, the auto model, full-vehicle control built based on Matlab/Simulink software on machine Device model, vehicle running environment model, dynamometer machine load Controlling model and Electric Motor Wheel vertical load load Controlling model；Host computer It is the dll file that can be called by LabVIEW by above-mentioned model conversation, PXI real-time control system is downloaded to by TCP/IP network In, and the real time execution in PXI real-time control system.

The CAN communication card and a model NI of one model NI PXI-8512 are housed in PXI real-time control system The data collecting card of PXI-6221.

Experimental stand includes pedestal, Electric Motor Wheel, Electric Motor Wheel controller, roller, sound state vertical load loading device, dynamic Load loading motor controller, torque and speed sensors, dynamometer machine, Dynamometer Control device, V/F controller.

NI PXI-8512CAN communication card in PXI real-time control system is used to and Electric Motor Wheel controller structure in test-bed At CAN network；NI PXI-8512CAN communication card will be calculated a certain by entire car controller model in PXI real-time control system Electronic turbin generator target drive torque value is sent in CAN network, and is received by the Electric Motor Wheel controller in test-bed；Together When, Electric Motor Wheel controller is sent the motor status information such as electric current, voltage, temperature in CAN network by some cycles, correlation letter Breath is received by NI PXI-8512CAN communication card；In PXI real-time control system NI PXI-6221 data collecting card it is any all the way The dynamometer machine load calculated dynamometer machine load torque values of Controlling model are sent to the dynamometer machine control in test-bed by the channel DA Device processed；Electric Motor Wheel has been hung down with any DA output channel all the way in addition to the channel DA except above-mentioned in NI PXI-6221 data collecting card Dynamic load loading motor control is sent to the load load calculated dynamic load loading motor target moment values of Controlling model Device processed；The dynamometer machine tachometer value measured by torque and speed sensors is changed into frequency signal through V/F converter, passes through NI PXI- The dynamometer machine measured in any acquisition of counter channel all the way test-bed of 6221 data collecting cards by torque and speed sensors Tachometer value, and the tachometer value is passed into dynamometer machine load Controlling model；The dynamometer machine torque measured by torque and speed sensors Value is changed into frequency signal through V/F converter, by NI PXI-6221 data collecting card except it is above-mentioned used counter channel in addition to Any acquisition of counter channel all the way test-bed in the dynamometer machine torque value that is measured by torque and speed sensors, and by this turn Square value passes to dynamometer machine load Controlling model；By any acquisition of the channel AD all the way of NI PXI-6221 data collecting card by The Electric Motor Wheel static vertical load value that static vertical load pressure sensor exports in sound state vertical load loading device, and will It passes to Electric Motor Wheel vertical load load Controlling model；By having been led to AD in NI PXI-6221 data collecting card except above-mentioned Any acquisition of the channel AD all the way outside road is exported by dynamic vertical load pressure sensor in sound state vertical load loading device Electric Motor Wheel dynamic vertical load value, and pass it to Electric Motor Wheel vertical load load Controlling model.

Sound state vertical loading device is added by the first support frame, the second support frame, U-shaped frame, electronic wheel suspension system, static state It carries to set and be formed with dynamic loading device.

First support frame is by L-type mounting seat (1), first support arm of support frame (2), the first support frame support plate (6) It is formed with second support arm of support frame (16)；One the first support arm of support frame (2), first support frame support plate (6) He Yizhi The second support arm of support (16) is rectangular parallelepiped structure；The end A of one the first support arm of support frame (2) and L-type mounting seat (1) The face A is fixedly connected, and the end B of first support arm of support frame (2) is fixedly connected with the face B of the first support frame support plate (6), and one The first support arm of support (2) is vertical with the face B in the face A of L-type mounting seat (1) and the first support frame support plate (6) respectively；One The end A of the second support arm of support (16) is fixedly connected with the face A of L-type mounting seat (1), second support arm of support frame (16) The end B is fixedly connected with the face B of the first support frame support plate (6), second support arm of support frame (16) respectively with L-type mounting seat (1) face B in the face A and the first support frame support plate (6) is vertical；It is equipped between the face A and the face B of first support frame support plate (6) First support frame circular through hole (30), the axis of the first support frame circular through hole (30) respectively with the first support frame support plate (6) The face A and the face B it is vertical.

Second support frame is by two the first support arms of support frame (3), the second support frame support plate (5), two support frame second Brace (15), the first support arm of electronic wheel suspension system (22), the second support arm of electronic wheel suspension system (24), the first lifting lug (34), the second lifting lug (35), third lifting lug (36) and the 4th lifting lug (37) composition；Two the first support arms of support frame (3), second Support support plate (5), two the second support arms of support frame (15), the first support arm of electronic wheel suspension system (22) and Electric Motor Wheel suspension The second support arm of device (24) is rectangular parallelepiped structure；The end A of two the first support arms of support frame (3) and L-type mounting seat (1) The face A is fixedly connected, and the end B of two the first support arms of support frame (3) is fixedly connected with the face B of the second support frame support plate (5), and two The first support arm of support (3) is vertical with the face B in the face A of L-type mounting seat (1) and the second support frame support plate (5) respectively；Two The end A of the second support arm of support (15) is fixedly connected with the face A of L-type mounting seat (1), two the second support arms of support frame (15) The end B is fixedly connected with the face B of the second support frame support plate (5), two the second support arms of support frame (15) respectively with L-type mounting seat (1) face B in the face A and the second support frame support plate (5) is vertical；Two the first support arms of support frame (3) are parallel to a support frame One support arm (2), the second support frame support plate (5) are parallel to the first support frame support plate (6), two the second support arms of support frame (15) be parallel to second support arm of support frame (16), two the first support arms of support frame (3), the second support frame support plate (5) and The bracket of two the second support arms of support frame (15) composition is located at the inside of the first support frame；Electronic the first support arm of wheel suspension system (22) the end A is fixedly connected with the face A of L-type mounting seat (1), the end B of electronic the first support arm of wheel suspension system (22) and the The face B of two support frame support plates (5) is fixedly connected, and electronic the first support arm of wheel suspension system (22) is respectively perpendicular L-type installation bottom The seat face A of (1) and the face B of the second support frame support plate (5)；The end A of electronic the second support arm of wheel suspension system (24) and L-type are pacified The face A of dress pedestal (1) is fixedly connected, the end B of electronic the second support arm of wheel suspension system (24) and the second support frame support plate (5) The face B be fixedly connected, electronic the second support arm of wheel suspension system (24) be respectively perpendicular L-type mounting seat (1) the face A and second The face B of support support plate (5)；Two the first square through holes of support frame are equipped between the face A and the face B of second support frame support plate (5) (31), the second support frame round thread through-hole (32) and two the second square through holes of support frame (33), two support frames first are rectangular logical The center line in hole (31), the central axis of the second support frame round thread through-hole (32) and two the second square through holes of support frame (33) Center line be parallel to each other, and be each perpendicular to the face A and the face B of the second support frame support plate (5)；Electronic wheel suspension system first Third lifting lug (36) and the 4th lifting lug (37) are fixedly installed in brace (22), between third lifting lug (36) and the 4th lifting lug (37) Distance be equal to bearing plate first support transverse arm (46) thickness；It is fixedly mounted on electronic the second support arm of wheel suspension system (24) There are the first lifting lug (34) and the second lifting lug (35), the distance between the first lifting lug (34) and the second lifting lug (35) are equal to bearing plate the The thickness of two supports transverse arm (49)；On first lifting lug (34), the second lifting lug (35), third lifting lug (36) and the 4th lifting lug (37) Equipped with lifting lug hole (38).

Electronic wheel suspension system supports transverse arm (46) and bearing plate second to support transverse arm by bearing plate (25), bearing plate first (49) it forms；Bearing plate (25) is rectangular parallelepiped structure, and bearing plate (25) face A center is equipped with the first circular groove of bearing plate (27), the planar central position opposite with the face A is equipped with the second circular groove of bearing plate (51), the first circular groove of bearing plate (27) It overlaps with projection of the second circular groove of bearing plate (51) on front view, and the axis of the two is each perpendicular to bearing plate (25) face A is equipped with 6 between the first circular groove of bearing plate (27) and the second circular groove of bearing plate (52) and is uniformly distributed and axis The line bearing plate tapped through hole (43) parallel with two recess axis；Bearing plate (25) face C is equipped with the first square groove of bearing plate (41), the second square groove of bearing plate (42) and bearing plate third square groove (44), the first square groove of bearing plate (41) The center line of center line, the center line of the second square groove of bearing plate (42) and bearing plate third square groove (44) is mutually flat Row, and it is respectively perpendicular to the face C of bearing plate (25)；It is set between bearing plate (25) face B and the first square groove of bearing plate (41) There are one the second tapped through hole of square groove (40) of one the first tapped through hole of square groove (39) of bearing plate and bearing plate, bearing plate one The center line phase of one the second tapped through hole of square groove (40) of center line and bearing plate of the first tapped through hole of square groove (39) It is mutually parallel, and perpendicular to bearing plate (25) face B；In the plane opposite with bearing plate (25) face B and bearing plate third square groove (44) three the second tapped through hole of square groove of three the first tapped through hole of square groove (45) of bearing plate and bearing plate is equipped between (50), three the second tapped through hole of square groove of the center line of three the first tapped through hole of square groove (45) of bearing plate and bearing plate (50) center line is parallel to each other, and perpendicular to bearing plate (25) face B；Bearing plate first supports the end A of transverse arm (46) to be equipped with and holds Weight plate first supports transverse arm through-hole (47), the other end and bearing plate (25) that bearing plate first supports transverse arm (46) opposite with the end A The face A be fixedly connected, bearing plate first support transverse arm (46) it is vertical with the face A of bearing plate (25)；Bearing plate second supports transverse arm (49) the end A is equipped with bearing plate second and supports transverse arm through-hole (48), and bearing plate second supports transverse arm (49) another opposite with the end A End is fixedly connected with the face A of bearing plate (25), and bearing plate second supports transverse arm (49) vertical with the face A of bearing plate (25)；Load-bearing Plate first supports the end A of transverse arm (46) to be placed between third lifting lug (36) and the 4th lifting lug (37), and bearing plate first supports cross Arm through-hole (47) is aligned with the lifting lug hole in the lifting lug hole of third lifting lug (36) and the 4th lifting lug (37), and bearing plate first supports transverse arm (46) it is connected by a hinge with electronic the first support arm of wheel suspension system (22)；Bearing plate second supports the end A of transverse arm (49) to set Between the first lifting lug (34) and the second lifting lug (35), and bearing plate second supports transverse arm through-hole (48) and the first lifting lug (34) Lifting lug hole and the alignment of the lifting lug hole of the second lifting lug (35), bearing plate second support transverse arm (49) and electronic wheel suspension system second Brace (24) is connected by a hinge；Electric Motor Wheel fixing axle (65) end is put into the second circular groove of bearing plate on bearing plate (25) (51) in, 6 uniformly distributed and axis in Electric Motor Wheel fixing axle (65) are electronic with Electric Motor Wheel fixing axle (65) centerline parallel Wheel fixing axle threaded hole (64) is aligned with 6 bearing plate tapped through holes (43), is screwed into 6 by the first circular groove of bearing plate (27) Electric Motor Wheel fixing axle (65) is fixedly connected by the second bolt of root (29) with bearing plate (25).

U-shaped frame is by U-shaped frame first support bar (4), U-shaped frame second support bar (11) and U-shaped frame third support rod (14) group At；U-shaped frame first support bar (4), U-shaped frame second support bar (11) and U-shaped frame third support rod (14) are rectangular parallelepiped structure； The end B of U-shaped frame first support bar (4) is fixedly connected with the face B of U-shaped frame second support bar (11), and the two is mutually perpendicular to, U-shaped The end A of frame first support bar (4) is equipped with U-shaped the first threaded hole of frame (59) and the second threaded hole of U-shaped frame (60), U-shaped the first spiral shell of frame The center line of pit (59) and the center line of the second threaded hole of U-shaped frame (60) are parallel to each other and are parallel to U-shaped frame second support bar (11) the face A；The end B of U-shaped frame third support rod (14) is fixedly connected with the face B of U-shaped frame second support bar (11), and the two phase Mutually vertical, the end A of U-shaped frame third support rod (14) is equipped with the 4th threaded hole (63) of U-shaped frame third threaded hole (62) and U-shaped frame, U The center line of the 4th threaded hole (63) of center line and U-shaped frame of type frame third threaded hole (62) is parallel to each other and is parallel to U-shaped frame The face A of second support bar (11)；U-shaped frame second support bar (11) face A is equipped with U-shaped frame square groove (61), and U-shaped frame square is recessed The central axis of slot (61) is in U-shaped frame second support bar (11) face A；U-shaped frame first support bar (4) passes through the second support frame branch Two the first square through holes of support frame (31) on fagging (5) are packed into bearing plate third square groove (44), U-shaped frame first support bar (4) the second threaded hole of U-shaped frame (60) on is aligned with three the first tapped through hole of square groove (45) of bearing plate, first, U-shaped frame The first threaded hole of U-shaped frame (59) on strut (4) is aligned with three the second tapped through hole of square groove (50) of bearing plate, U-shaped frame One support rod (4) is fixedly connected with bearing plate (25) by two first bolts (28)；U-shaped frame third support rod (14) passes through the Two the second square through holes of support frame (33) in two support frame support plates (5) are packed into the first square groove of bearing plate (41), U-shaped frame U-shaped frame third threaded hole (62) on third support rod (14) is aligned with one the second tapped through hole of square groove (40) of bearing plate, U The 4th threaded hole (63) of U-shaped frame and one the first tapped through hole of square groove (39) of bearing plate on type frame third support rod (14) is right Together, U-shaped frame third support rod (14) is fixedly connected with bearing plate (25) by two first bolts (28).

Static loading device is by static loading device rotating handle (12), static loading device screw rod (13) and static vertical Load pressure sensor (26) composition；Static loading device rotating handle (12) and the fixed company of static loading device screw rod (13) It connects, static loading device screw rod (13) and the second support frame round thread through-hole (32) cooperate, static loading device screw rod (13) axis of axis and the second support frame round thread through-hole (32) overlaps, and static loading device screw rod (13) passes through Second support frame round thread through-hole (32) is vertically pressed in the top of static vertical load pressure sensor (26), and static vertical carries Lotus pressure sensor (26) is placed in the second square groove of bearing plate (42) of electronic wheel suspension system.

Dynamic loading device is by dynamic loading device motor (9), dynamic vertical load pressure sensor (10), dynamically load Device screw rod (23), dynamic loading device worm gear (53) and dynamic loading device worm screw (54) composition；Dynamic loading device worm gear (53) it cooperates with dynamic loading device worm screw (54)；The output shaft of motor (9) and dynamic loading device worm screw (54) are fixed Connection, the two axis are overlapped；Dynamic loading device worm gear (53) and the axis of dynamic loading device screw rod (23) overlap, and two Person is connected through a screw thread；It is round that dynamic loading device screw rod (23) passes through the first support frame in the first support frame support plate (6) Through-hole (30) is vertically pressed in the top of dynamic vertical load pressure sensor (10), and dynamic vertical load pressure sensor (10) is put It sets in the U-shaped frame square groove (61) above U-shaped frame second support bar (11).

A kind of beneficial effects of the present invention: Electric Motor Wheel compbined test based on virtual instrument and sound state vertical loading device Platform is capable of the vertical load of various running resistances and wheel of the simulated automotive during road driving, more particularly to for electricity The characteristics of driving wheel, due to wheel vertical load caused by acceleration, deceleration and Uneven road in accurate simulation vehicle traveling process Variation provides the test environment close to real train test for test Electric Motor Wheel performance；The present invention can be the exploitation of Electric Motor Wheel electric vehicle, A kind of integration test testing stand is provided, can be improved the safety of Electric Motor Wheel electric vehicle test, reduces the dependence to experimental site Property, reduces the cost of control system's development, and can effectively shorten the development cycle.

Detailed description of the invention

Fig. 1 is a kind of structure composition of Electric Motor Wheel multi-function test stand based on virtual instrument and sound state vertical loading device And operation principle schematic diagram.

Fig. 2 is Electric Motor Wheel sound state vertical loading device shaft side figure.

Fig. 3 is Electric Motor Wheel sound state vertical loading device front view.

Fig. 4 is Electric Motor Wheel sound state vertical loading device rearview.

Fig. 5 is Electric Motor Wheel sound state vertical loading device the first support frame shaft side figure.

Fig. 6 is Electric Motor Wheel sound state vertical loading device the first support frame front view.

Fig. 7 is Electric Motor Wheel sound state vertical loading device the first support frame side view.

Fig. 8 is Electric Motor Wheel sound state vertical loading device the second support frame shaft side figure.

Fig. 9 is Electric Motor Wheel sound state vertical loading device the second support frame front view.

Figure 10 is Electric Motor Wheel sound state vertical loading device the second support frame top view.

Figure 11 is electronic the first support arm of wheel suspension system of Electric Motor Wheel sound state vertical loading device or Electric Motor Wheel suspension dress Set the second support arm side view.

Figure 12 is Electric Motor Wheel sound state vertical loading device bearing plate shaft side figure.

Figure 13 is Electric Motor Wheel sound state vertical loading device bearing plate front view.

Figure 14 is Electric Motor Wheel sound state vertical loading device bearing plate top view.

Figure 15 is Electric Motor Wheel sound state vertical loading device bearing plate left side view.

Figure 16 is Electric Motor Wheel sound state vertical loading device bearing plate right side view.

Figure 17 is the shaft side figure after Electric Motor Wheel the second support frame of sound state vertical loading device and bearing plate installation.

Figure 18 is after the second support frame of Electric Motor Wheel sound state vertical loading device, bearing plate and static loading device are installed Shaft side figure.

Figure 19 is Electric Motor Wheel sound state vertical loading device dynamic loading device structure chart.

Figure 20 is Electric Motor Wheel sound state vertical loading device dynamic loading device transmission device shaft side figure.

Figure 21 is the U-shaped frame shaft side figure of Electric Motor Wheel sound state vertical loading device.

Figure 22 is the U-shaped frame front view of Electric Motor Wheel sound state vertical loading device.

Figure 23 is the U-shaped frame top view of Electric Motor Wheel sound state vertical loading device.

Figure 24 is the U-shaped frame left side view of Electric Motor Wheel sound state vertical loading device.

Figure 25 is the U-shaped frame right side view of Electric Motor Wheel sound state vertical loading device.

Figure 26 is Electric Motor Wheel sound state vertical loading device Electric Motor Wheel shaft side figure.

Figure 27 be Electric Motor Wheel sound state vertical loading device Electric Motor Wheel, bearing plate, static loading device and it is U-shaped it is rack-mounted match after Shaft side figure.

In figure: 1.L type mounting seat；2. first support arm of support frame；3. two the first support arms of support frame；4.U type frame First support bar；5. the second support frame support plate；6. the first support frame support plate；7. worm gear seal bucket；8. worm screw seals bucket；9. Dynamic loading device motor；10. dynamic vertical load pressure sensor；11.U type frame second support bar；12. static loading device Rotating handle；13. static loading device screw rod；14.U type frame third support rod；15. two the second support arms of support frame；16. one The second support arm of support；17. Electric Motor Wheel；18. roller；19. cylinder support axis；20. cylinder support plate；21. cylinder support axis axis It holds；22. electronic the first support arm of wheel suspension system；23. dynamic loading device screw rod；24. electronic wheel suspension system second supports Arm；25. bearing plate；26. static vertical load pressure sensor；27. the first circular groove of bearing plate；28. the first bolt；29. Second bolt；30. the first support frame circular through hole；31. two the first square through holes of support frame；32. the second support frame round thread Through-hole；33. two the second square through holes of support frame；34. the first lifting lug；35. the second lifting lug；36. third lifting lug；37. the 4th lifting lug； 38. lifting lug hole；39. one the first tapped through hole of square groove of bearing plate；40. one the second tapped through hole of square groove of bearing plate；41. The first square groove of bearing plate；42. the second square groove of bearing plate；43. bearing plate tapped through hole；44. bearing plate third square Groove；45. three the first tapped through hole of square groove of bearing plate；46. bearing plate first supports transverse arm；47. bearing plate first supports Transverse arm through-hole；48. bearing plate second supports transverse arm through-hole；49. bearing plate second supports transverse arm；50. three square groove of bearing plate Second tapped through hole；51. the second circular groove of bearing plate；52. shaft coupling；53. dynamic loading device worm gear；54. dynamically load Device worm screw；55. worm screw first bearing；56. worm screw second bearing；57. the first thrust bearing of worm gear；58. the second thrust of worm gear Bearing；The first threaded hole of 59.U type frame；The second threaded hole of 60.U type frame；61.U type frame square groove；62.U type frame third screw thread Hole；The 4th threaded hole of 63.U type frame；64. Electric Motor Wheel fixing axle threaded hole；65. Electric Motor Wheel fixing axle.

Specific embodiment

It is an object of that present invention to provide a kind of based on the comprehensive examination of the Electric Motor Wheel of virtual instrument and sound state vertical loading device Platform is tested, which is capable of the vertical load of various running resistances and wheel of the simulated automotive during road driving, especially It can be directed to the characteristics of Electric Motor Wheel, be hung down as caused by acceleration, deceleration and Uneven road in accurate simulation vehicle traveling process Change to dynamic load, the test environment close to real train test is provided for test Electric Motor Wheel performance, so that the peace of experiment can be improved Quan Xing is reduced to the dependence of experimental site, and can effectively shorten development cycle of Electric Motor Wheel and electric wheeled electric vehicle.

Technical solution of the present invention is described further with reference to the accompanying drawing.

A kind of Electric Motor Wheel multi-function test stand based on virtual instrument and sound state vertical loading device includes rack master control mould Block and test-bed；Rack main control module is made of host computer and PXI real-time control system, host computer and PXI real-time control system System is connected to the network by TCP/IP.

Host computer is ordinary PC, and LabVIEW software and Matlab/Simulink software are housed on host computer, are based on Matlab/Simulink software has built pilot model, driving cycle model, auto model, entire car controller in host computer Model, vehicle running environment model, dynamometer machine load Controlling model and Electric Motor Wheel vertical load stress model；Host computer will be above-mentioned Model conversation is the dll file that can be called by LabVIEW, is downloaded in PXI real-time control system by TCP/IP network, and Real time execution in PXI real-time control system；Host computer can realize following function: (1) based on the Matlab/Simulink of host computer Software builds pilot model, driving cycle model, auto model, entire car controller model, vehicle running environment model, measurement of power Machine loads Controlling model and Electric Motor Wheel vertical load stress model；(2) be converted into can by LabVIEW call dll file and under It is downloaded in the real-time control system based on PXI；(3) monitoring interface is built using the LabVIEW software in host computer, it is whole to monitor A test process and to target machine carry out real-time control.

The CAN communication card and a model NI of one model NI PXI-8512 are housed in PXI real-time control system The data collecting card of PXI-6221；PXI real-time control system includes cabinet, system controller and peripheral module；The cabinet is Entire PXI system provides firm modularized encapsulation structure；The system controller includes the PC components such as CPU, memory, at this The real time operating system LabVIEW-RT that LabVIEW is installed in the system controller of test platform, when controller works in RT mould When formula, PXI is become as a remote terminal, by Ethernet and can be equipped with the common computer of LabVIEW software and be communicated； The host computer and PXI real-time control system are monitored bench run process by TCP/IP progress data interaction；It is described PXI real-time control system implement function such as: (1) real time execution pilot model, driving cycle model, auto model, whole Vehicle controller model, vehicle running environment model, dynamometer machine load Controlling model and Electric Motor Wheel vertical load stress model；(2) Carrier of the PXI real-time control system as data collecting card, enables rack main control module to complete to control with test-bed The acquisition and transmission of signal between device and sensor；(3) real-time experimental data is sent to host computer by TCP/IP network.

The data collecting card of the model PXI-6221 simulation that has that 16 tunnels are single-ended or 8 roads are checked the mark in PXI real-time control system Measure input channel, 2 12, tunnel analog output channels, 24 railway digital amount channels and two 32 digit counters/timers；PXI is real When control system in the CAN communication card of model PXI-8512 be a high-speed controller local area network with Flexible Data Rate (CAN) interface is driven by NI-XNET and completes application development；PXI-8512 is very suitable to the application of high speed real-time operation, Such as hardware-in-loop simulation, rapid control prototyping, monitoring bus, automation control；The DMA engine of NI-XNET device drives makes CAN frame and signal can be transmitted without interrupting CPU between interface and user program by obtaining onboard processing device, to minimize message Delay, the model and application program for keeping the processing of host-processor having time complicated.

The model built in rack main control module is specifically described as follows:

Driving cycle model: defining the target travel speed of automobile, and the output of driving cycle is target vehicle speed；Driver's mould Type: in order to enable automobile, according to target speed is travelled, and establishes the PI controller model based on target vehicle speed and actual vehicle speed, vehicle The actual vehicle speed of model output and the difference of target vehicle speed are the inputs of pilot model, and the output of pilot model is to accelerate to step on Plate aperture, brake pedal aperture and steering wheel angle；The input of entire car controller model includes the acceleration of pilot model output Pedal opening, brake pedal aperture, the speed of auto model output, side slip angle, longitudinal acceleration, side acceleration, cross The information such as pivot angle speed, wheel slip；The torque of front left wheel drive is calculated in entire car controller model, front right wheel drive turns Square, the torque of rear left wheel drive, rear right wheel driving torque, and it is passed along auto model；It is defeated that auto model receives pilot model Steering wheel angle out, the output of entire car controller model four wheel driving torques, according to speed, mass center lateral deviation is calculated Angle, longitudinal acceleration, side acceleration, yaw velocity, wheel slip, wherein speed, side slip angle, longitudinal acceleration Degree, side acceleration, yaw velocity, wheel slip pass to entire car controller model, longitudinal acceleration, side acceleration Electric Motor Wheel vertical load stress model is passed to, speed, longitudinal acceleration pass to dynamometer machine load control module；Electric Motor Wheel is hung down Sound state Vertical loading is calculated according to longitudinal acceleration, side acceleration and relevant vehicle parameter in straight load stress model The dynamic load loading motor target torque of device；Dynamometer machine loads Controlling model according to speed, longitudinal acceleration and road slope Load torque needed for Dynamometer Control device is calculated in degree angle；Environmental model includes some road informations, as system is adhered on road surface Several and road grade angle etc., these road informations are passed to auto model by environmental model.

Vertical load stress model: in vehicle traveling process, analysis of wheel vertical load adds by automobile longitudinal acceleration, laterally The vertical load of the influence of speed, each wheel is calculated according to the following formula:

In above formula, m is complete vehicle quality,WithThe respectively longitudinal acceleration and side acceleration of vehicle, g are gravity acceleration Degree, h_gFor mass center terrain clearance, l_fFor the distance of mass center to front axle, l_rFor the distance of mass center to rear axle, L is wheelbase, and B is wheelspan, F_ziFor vertical force suffered by wheel (subscript 1,2,3,4 respectively indicate it is left front, right before, left back, right rear wheel), wherein m, g, h_g、 l_f、l_r, L, B be constant.

Known by above-mentioned formula, in the process of moving, due to automobile acceleration, deceleration and wheel load transfer caused by turning to makes automobile The vertical load for obtaining each wheel constantly changes, but in the case where providing driving cycle, the variation range of vertical load can be according to vehicle Longitudinal acceleration in travelingAnd side accelerationIt calculates；The vertical load of wheel in vehicle traveling process can be obtained Section [F_min,F_max]；Static load loading device in sound state vertical load loading device needs to be applied to hanging down for Electric Motor Wheel It is F to stress_min, remainder is then applied to by the dynamic load loading device in sound state vertical load loading device electronic Wheel.

Dynamometer machine load Controlling model: the resistance that automobile is subject to when driving on road include rolling resistance, air drag, Acceleration resistance (also often saying as inertia resistance) and grade resistance.

Rolling resistance equation:

F_f=mgf

Air drag equation:

Grade resistance equation:

F_i=mgsin α

Acceleration resistance equation:

Wherein: m is complete vehicle quality, and f is coefficient of rolling resistance, C_dFor coefficient of air resistance, A is front face area of automobile, and g is gravity Acceleration, u are speed of operation, and δ is correction coefficient of rotating mass, and α is the angle of gradient, f, C_d, A, g, δ be constant.

Known by above-mentioned equation, the resistance being subject in simulated automotive driving process, needs to calculate the Travel vehicle of vehicle in real time Speed, the angle of gradient and acceleration value；Since Electric Motor Wheel is pressed on roller by sound state vertical load loading device, so can be with electronic The rolling resistance in frictional force simulation real vehicle road driving between wheel and roller, acceleration resistance, air drag and grade resistance Then simulated by dynamometer machine.

Electric Motor Wheel is pressed on roller by sound state vertical load loading device, and one end of roller is turned by shaft coupling and revolving speed One end of square sensor connects, and the other end of torque and speed sensors passes through the output axis connection of shaft coupling and dynamometer machine；It is electronic Turbin generator controller and Dynamometer Control device control the torque of Electric Motor Wheel and dynamometer machine respectively.

It is a kind of to be introduced such as based on the Electric Motor Wheel multi-function test stand course of work of virtual instrument and sound state vertical loading device Under.

Before the test first by the driving cycle model built in host computer, pilot model, auto model, vehicle driving ring Border model, full-vehicle control model, Electric Motor Wheel vertical load stress model and dynamometer machine load Controlling model operation, calculating are travelling The minimum value of vertical load suffered by Electric Motor Wheel under operating condition, the value as pass through the screw rod (13) in rotation static loading device to electricity The static vertical force that driving wheel applies, measures the pressure value by static load pressure sensor (26), corresponding pressure value passes through The A/D input channel of NI PXI-6221 data collecting card is transmitted in PXI real-time control system in PXI real-time control system.

The driving cycle model, pilot model, vehicle mould that will be established on host computer Matlab/Simulink software Type, vehicle running environment model, entire car controller model, Electric Motor Wheel vertical load load Controlling model and dynamometer machine load control Model is compiled into real-time code by RTW and downloads in PXI real-time control system, and real time execution.

The auto model of PXI real-time control system real-time longitudinal acceleration during a certain operating condition downward driving by automobile It is sent to Electric Motor Wheel vertical load load Controlling model with side acceleration, speed of operation, the angle of gradient and acceleration value are sent Controlling model is loaded to dynamometer machine.

Electric Motor Wheel vertical load load Controlling model calculates should be applied to hanging down for Electric Motor Wheel by dynamic load loading device To loading force, by a DA output channel of PXI-6221 data collecting card in PXI real-time control system (in AO0~AO1 One channel) it is sent to the dynamic load loading motor controller of sound state vertical load loading device, dynamic load load electricity Machine controller controls dynamic loading device motor (9) rotation, and dynamic loading device motor (9) drives dynamic by shaft coupling (52) Loading device worm screw (54) rotation, dynamic loading device worm screw (54) drive dynamic loading device worm gear (53) to turn by tooth engagement It is dynamic, since dynamic loading device worm gear (53) has the first thrust bearing of worm gear (57) and the second thrust bearing of worm gear (58) up and down, So dynamic loading device worm gear (53) can only make rotating motion and dynamic loading device worm gear (53) inner hole is threadedly engaged Dynamic loading device screw rod (23) is moved up and down with the rotation of dynamic loading device worm gear (53), dynamic loading device screw rod (23) Bottom end be equipped with dynamic load pressure sensor (10), dynamic loading device screw rod (23) is by dynamic load pressure sensor (10) It is pressed in the U-shaped frame square groove (61) above U-shaped frame second support bar (11), for measuring hanging down for dynamic loading device application Xiang Li；Since U-shaped frame and bearing plate (25) are fixed with one by bolt, vertical force is applied to bearing plate by dynamic loading device (25) on.

The Electric Motor Wheel (17) being connected on bearing plate (25) is forced by static loading power and dynamically load in roller (18) On；The dynamic pressure value measured is passed through PXI-6221 data in PXI real-time control system by dynamic load pressure sensor (10) The A/D input channel of capture card sends back the load Controlling model of the vertical load in PXI real-time control system, and it is vertical to form dynamic The closed-loop control of loading force.

Dynamometer machine load Controlling model, which calculates dynamometer machine, needs running resistance to be simulated, passes through PXI real-time control system A DA output channel (channel in AO0~AO1) for middle PXI-6221 data collecting card is sent to Dynamometer Control device, Dynamometer Control device control dynamometer machine applies certain load torque.

Electric Motor Wheel controller forms CAN net in PXI-8512CAN communication card and test-bed in PXI real-time control system Network, the driving torque target value in PXI real-time control system based on the calculated a certain Electric Motor Wheel of entire car controller model are sent It onto CAN network, is received by Electric Motor Wheel controller in test-bed, Electric Motor Wheel device controls Electric Motor Wheel after receiving torque instruction Rotation, hub motor control device send the motor status information such as electric current, voltage, temperature in CAN network by some cycles, related Information is received by PXI-8512CAN communication card.

Torque and speed sensors measure the revolving speed and dtc signal of dynamometer machine, are converted into two-way frequency by V/F module Rate signal, and the two-way frequency signal measured (being all the way tach signal, be all the way dtc signal) is sent to PXI real-time control The counter channel (two channels CTR 0OUT and CTR 1OUT) of PXI-6221 data collecting card in system.

A kind of Electric Motor Wheel multi-function test stand based on virtual instrument and sound state vertical loading device can simulated automotive exist The vertical load power of various running resistances and wheel during road driving can be exploitation Electric Motor Wheel electric vehicle and test electricity The performance of driving wheel electric vehicle provides the environment close to real train test.

Claims

1. a kind of Electric Motor Wheel multi-function test stand based on virtual instrument and sound state vertical loading device, it is characterised in that: by platform Frame main control module and experimental stand composition；

Rack main control module is made of host computer and PXI real-time control system, and host computer and PXI real-time control system pass through TCP/ IP network connection；

Host computer is ordinary PC, LabVIEW software and Matlab/Simulink software is housed on host computer, on host computer There are pilot model, driving cycle model, auto model, the entire car controller mould built based on Matlab/Simulink software Type, vehicle running environment model, dynamometer machine load Controlling model and Electric Motor Wheel vertical load load Controlling model；Host computer will be upper Stating model conversation is the dll file that can be called by LabVIEW, is downloaded in PXI real-time control system by TCP/IP network, and The real time execution in PXI real-time control system；

The CAN communication card and a model NI PXI- of one model NI PXI-8512 are housed in PXI real-time control system 6221 data collecting card；

2. a kind of Electric Motor Wheel compbined test based on virtual instrument and sound state vertical loading device described in accordance with the claim 1 Platform, it is characterised in that: the NI PXI-8512 CAN communication card in PXI real-time control system is used to and Electric Motor Wheel in test-bed Controller forms CAN network；NI PXI-8512 CAN communication card will be by entire car controller model meter in PXI real-time control system The electronic turbin generator target drive torque value calculated is sent in CAN network, and is connect by the Electric Motor Wheel controller in test-bed It receives；Meanwhile Electric Motor Wheel controller is sent the motor status information such as electric current, voltage, temperature in CAN network by some cycles, Relevant information is clamped by NI PXI-8512 CAN communication and is received；NI PXI-6221 data collecting card in PXI real-time control system Arbitrarily the dynamometer machine load calculated dynamometer machine load torque values of Controlling model are sent in test-bed by the channel DA all the way Dynamometer Control device；In NI PXI-6221 data collecting card except it is above-mentioned used the channel DA in addition to any DA output channel all the way will The Electric Motor Wheel vertical load load calculated dynamic load loading motor target moment values of Controlling model are sent to dynamic load and add Carry electric machine controller；The dynamometer machine tachometer value measured by torque and speed sensors is converted to frequency signal through V/F converter, passes through It is measured in any acquisition of counter channel all the way test-bed of NI PXI-6221 data collecting card by torque and speed sensors Dynamometer machine tachometer value, and the tachometer value is passed into dynamometer machine load Controlling model；The measurement of power measured by torque and speed sensors Machine torque value is converted to frequency signal through V/F converter, by having used counter except above-mentioned in NI PXI-6221 data collecting card The dynamometer machine torque value measured in any acquisition of counter channel all the way test-bed outside channel by torque and speed sensors, and The torque value is passed into dynamometer machine load Controlling model；Pass through any channel AD all the way of NI PXI-6221 data collecting card The Electric Motor Wheel static vertical load that acquisition is exported by static vertical load pressure sensor in sound state vertical load loading device Value, and pass it to Electric Motor Wheel vertical load load Controlling model；By in NI PXI-6221 data collecting card except it is above-mentioned It is acquired with any channel AD all the way outside the channel AD and is sensed by dynamic vertical load pressure in sound state vertical load loading device The Electric Motor Wheel dynamic vertical load value of device output, and pass it to Electric Motor Wheel vertical load load Controlling model.

3. a kind of Electric Motor Wheel compbined test based on virtual instrument and sound state vertical loading device described in accordance with the claim 1 Platform, it is characterised in that: sound state vertical loading device by the first support frame, the second support frame, U-shaped frame, electronic wheel suspension system, Static loading device and dynamic loading device composition；

First support frame is by L-type mounting seat (1), first support arm of support frame (2), the first support frame support plate (6) and one The second support arm of support frame (16) composition；One the first support arm of support frame (2), the first support frame support plate (6) and a support frame Second support arm (16) is rectangular parallelepiped structure；The end A of one the first support arm of support frame (2) and the face A of L-type mounting seat (1) It is fixedly connected, the end B of first support arm of support frame (2) is fixedly connected with the face B of the first support frame support plate (6), a support The first support arm of frame (2) is vertical with the face B in the face A of L-type mounting seat (1) and the first support frame support plate (6) respectively；One support The end A of the second support arm of frame (16) is fixedly connected with the face A of L-type mounting seat (1), the B of second support arm of support frame (16) End be fixedly connected with the face B of the first support frame support plate (6), second support arm of support frame (16) respectively with L-type mounting seat (1) face B in the face A and the first support frame support plate (6) is vertical；It is equipped between the face A and the face B of first support frame support plate (6) First support frame circular through hole (30), the axis of the first support frame circular through hole (30) respectively with the first support frame support plate (6) The face A and the face B it is vertical；

Second support frame is by two the first support arms of support frame (3), the second support frame support plate (5), two the second support arms of support frame (15), electronic the first support arm of wheel suspension system (22), the second support arm of electronic wheel suspension system (24), the first lifting lug (34), Second lifting lug (35), third lifting lug (36) and the 4th lifting lug (37) composition；Two the first support arms of support frame (3), the second support frame Support plate (5), two the second support arms of support frame (15), the first support arm of electronic wheel suspension system (22) and electronic wheel suspension system Second support arm (24) is rectangular parallelepiped structure；The end A of two the first support arms of support frame (3) and the face A of L-type mounting seat (1) It is fixedly connected, the end B of two the first support arms of support frame (3) is fixedly connected with the face B of the second support frame support plate (5), two supports The first support arm of frame (3) is vertical with the face B in the face A of L-type mounting seat (1) and the second support frame support plate (5) respectively；Two supports The end A of the second support arm of frame (15) is fixedly connected with the face A of L-type mounting seat (1), the B of two the second support arms of support frame (15) End be fixedly connected with the face B of the second support frame support plate (5), two the second support arms of support frame (15) respectively with L-type mounting seat (1) face B in the face A and the second support frame support plate (5) is vertical；Two the first support arms of support frame (3) are parallel to a support frame One support arm (2), the second support frame support plate (5) are parallel to the first support frame support plate (6), two the second support arms of support frame (15) be parallel to second support arm of support frame (16), two the first support arms of support frame (3), the second support frame support plate (5) and The bracket of two the second support arms of support frame (15) composition is located at the inside of the first support frame；Electronic the first support arm of wheel suspension system (22) the end A is fixedly connected with the face A of L-type mounting seat (1), the end B of electronic the first support arm of wheel suspension system (22) and the The face B of two support frame support plates (5) is fixedly connected, and electronic the first support arm of wheel suspension system (22) is respectively perpendicular L-type installation bottom The seat face A of (1) and the face B of the second support frame support plate (5)；The end A of electronic the second support arm of wheel suspension system (24) and L-type are pacified The face A of dress pedestal (1) is fixedly connected, the end B of electronic the second support arm of wheel suspension system (24) and the second support frame support plate (5) The face B be fixedly connected, electronic the second support arm of wheel suspension system (24) be respectively perpendicular L-type mounting seat (1) the face A and second The face B of support support plate (5)；Two the first square through holes of support frame are equipped between the face A and the face B of second support frame support plate (5) (31), the second support frame round thread through-hole (32) and two the second square through holes of support frame (33), two support frames first are rectangular logical The center line in hole (31), the central axis of the second support frame round thread through-hole (32) and two the second square through holes of support frame (33) Center line be parallel to each other, and be each perpendicular to the face A and the face B of the second support frame support plate (5)；Electronic wheel suspension system first Third lifting lug (36) and the 4th lifting lug (37) are fixedly installed in brace (22), between third lifting lug (36) and the 4th lifting lug (37) Distance be equal to bearing plate first support transverse arm (46) thickness；It is fixedly mounted on electronic the second support arm of wheel suspension system (24) There are the first lifting lug (34) and the second lifting lug (35), the distance between the first lifting lug (34) and the second lifting lug (35) are equal to bearing plate the The thickness of two supports transverse arm (49)；On first lifting lug (34), the second lifting lug (35), third lifting lug (36) and the 4th lifting lug (37) Equipped with lifting lug hole (38)；

Electronic wheel suspension system supports transverse arm (46) and bearing plate second to support transverse arm (49) by bearing plate (25), bearing plate first Composition；Bearing plate (25) is rectangular parallelepiped structure, and bearing plate (25) face A center is equipped with the first circular groove of bearing plate (27), The planar central position opposite with the face A be equipped with the second circular groove of bearing plate (51), the first circular groove of bearing plate (27) with hold Projection of the second circular groove of weight plate (51) on front view overlaps, and the axis of the two is each perpendicular to bearing plate (25) A Face, between the first circular groove of bearing plate (27) and the second circular groove of bearing plate (52) be equipped with 6 be uniformly distributed and axis with The parallel bearing plate tapped through hole (43) of two recess axis；Bearing plate (25) face C be equipped with the first square groove of bearing plate (41), The second square groove of bearing plate (42) and bearing plate third square groove (44), the center of the first square groove of bearing plate (41) The center line of line, the center line of the second square groove of bearing plate (42) and bearing plate third square groove (44) is parallel to each other, and It is respectively perpendicular to the face C of bearing plate (25)；Load-bearing is equipped between bearing plate (25) face B and the first square groove of bearing plate (41) One the second tapped through hole of square groove (40) of one the first tapped through hole of square groove (39) of plate and bearing plate, bearing plate one are rectangular recessed The center line of one the second tapped through hole of square groove (40) of center line and bearing plate of the first tapped through hole of slot (39) is parallel to each other, And perpendicular to bearing plate (25) face B；Between the plane opposite with bearing plate (25) face B and bearing plate third square groove (44) Equipped with three the second tapped through hole of square groove (50) of three the first tapped through hole of square groove (45) of bearing plate and bearing plate, bearing plate The center line of three the second tapped through hole of square groove (50) of center line and bearing plate of three the first tapped through holes of square groove (45) It is parallel to each other, and perpendicular to bearing plate (25) face B；Bearing plate first supports the end A of transverse arm (46) to support equipped with bearing plate first Transverse arm through-hole (47), the face A of the other end and bearing plate (25) that bearing plate first supports transverse arm (46) opposite with the end A is fixed to be connected It connects, bearing plate first supports transverse arm (46) vertical with the face A of bearing plate (25)；Bearing plate second supports the end A of transverse arm (49) to set There is bearing plate second to support transverse arm through-hole (48), the other end and bearing plate that bearing plate second supports transverse arm (49) opposite with the end A (25) the face A is fixedly connected, and bearing plate second supports transverse arm (49) vertical with the face A of bearing plate (25)；Bearing plate first supports The end A of transverse arm (46) is placed between third lifting lug (36) and the 4th lifting lug (37), and bearing plate first supports transverse arm through-hole (47) Be aligned with the lifting lug hole in the lifting lug hole of third lifting lug (36) and the 4th lifting lug (37), bearing plate first support transverse arm (46) with it is electronic The first support arm of wheel suspension system (22) is connected by a hinge；Bearing plate second supports the end A of transverse arm (49) to be placed in the first lifting lug (34) between the second lifting lug (35), and bearing plate second supports the lifting lug hole and the of transverse arm through-hole (48) and the first lifting lug (34) The lifting lug hole of two lifting lugs (35) is aligned, and bearing plate second supports transverse arm (49) and electronic the second support arm of wheel suspension system (24) logical Cross hinge connection；Electric Motor Wheel fixing axle (65) end is put into the second circular groove of bearing plate (51) on bearing plate (25), electricity 6 in driving wheel fixing axle (65) are uniformly distributed and the Electric Motor Wheel fixing axle spiral shell of axis and Electric Motor Wheel fixing axle (65) centerline parallel Pit (64) is aligned with 6 bearing plate tapped through holes (43), is screwed into 6 second bolts by the first circular groove of bearing plate (27) (29), Electric Motor Wheel fixing axle (65) is fixedly connected with bearing plate (25)；

U-shaped frame is made of U-shaped frame first support bar (4), U-shaped frame second support bar (11) and U-shaped frame third support rod (14)；U Type frame first support bar (4), U-shaped frame second support bar (11) and U-shaped frame third support rod (14) are rectangular parallelepiped structure；It is U-shaped The end B of frame first support bar (4) is fixedly connected with the face B of U-shaped frame second support bar (11), and the two is mutually perpendicular to, U-shaped frame The end A of one support rod (4) is equipped with U-shaped the first threaded hole of frame (59) and the second threaded hole of U-shaped frame (60), U-shaped the first threaded hole of frame (59) center line of center line and the second threaded hole of U-shaped frame (60) is parallel to each other and is parallel to U-shaped frame second support bar (11) The face A；The end B of U-shaped frame third support rod (14) is fixedly connected with the face B of U-shaped frame second support bar (11), and the two is mutually hung down Directly, the end A of U-shaped frame third support rod (14) is equipped with the 4th threaded hole (63) of U-shaped frame third threaded hole (62) and U-shaped frame, U-shaped frame The center line of the 4th threaded hole (63) of center line and U-shaped frame of third threaded hole (62) is parallel to each other and is parallel to U-shaped frame second The face A of support rod (11)；U-shaped frame second support bar (11) face A is equipped with U-shaped frame square groove (61), U-shaped frame square groove (61) central axis is in U-shaped frame second support bar (11) face A；U-shaped frame first support bar (4) supports across the second support frame Two the first square through holes of support frame (31) on plate (5) are packed into bearing plate third square groove (44), U-shaped frame first support bar (4) the second threaded hole of U-shaped frame (60) on is aligned with three the first tapped through hole of square groove (45) of bearing plate, first, U-shaped frame The first threaded hole of U-shaped frame (59) on strut (4) is aligned with three the second tapped through hole of square groove (50) of bearing plate, U-shaped frame One support rod (4) is fixedly connected with bearing plate (25) by two first bolts (28)；U-shaped frame third support rod (14) passes through the Two the second square through holes of support frame (33) in two support frame support plates (5) are packed into the first square groove of bearing plate (41), U-shaped frame U-shaped frame third threaded hole (62) on third support rod (14) is aligned with one the second tapped through hole of square groove (40) of bearing plate, U The 4th threaded hole (63) of U-shaped frame and one the first tapped through hole of square groove (39) of bearing plate on type frame third support rod (14) is right Together, U-shaped frame third support rod (14) is fixedly connected with bearing plate (25) by two first bolts (28)；

Static loading device is by static loading device rotating handle (12), static loading device screw rod (13) and static vertical load Pressure sensor (26) composition；Static loading device rotating handle (12) is fixedly connected with static loading device screw rod (13), quiet State loading device screw rod (13) and the second support frame round thread through-hole (32) cooperate, static loading device screw rod (13) The axis of axis and the second support frame round thread through-hole (32) overlaps, and static loading device screw rod (13) passes through second Support round thread through-hole (32) is vertically pressed in the top of static vertical load pressure sensor (26), static vertical load pressure Sensor (26) is placed in the second square groove of bearing plate (42) of electronic wheel suspension system；

Dynamic loading device is by dynamic loading device motor (9), dynamic vertical load pressure sensor (10), dynamic loading device Screw rod (23), dynamic loading device worm gear (53) and dynamic loading device worm screw (54) composition；Dynamic loading device worm gear (53) It cooperates with dynamic loading device worm screw (54)；The output shaft of motor (9) is fixedly connected with dynamic loading device worm screw (54), The two axis is overlapped；Dynamic loading device worm gear (53) and the axis of dynamic loading device screw rod (23) overlap, and the two is logical Cross threaded connection；Dynamic loading device screw rod (23) passes through the first support frame circular through hole in the first support frame support plate (6) (30) it is vertically pressed in the top of dynamic vertical load pressure sensor (10), dynamic vertical load pressure sensor (10) is placed on In U-shaped frame square groove (61) above U-shaped frame second support bar (11).