CN212160021U - General loading test system for electromagnetic compatibility of power systems of commercial vehicle and passenger vehicle - Google Patents

Abstract

The utility model discloses a general load test system of commercial car and passenger car driving system electromagnetic compatibility, including test bench main part, anechoic chamber, shielding control room, shielding anechoic chamber, the test bench main part includes dynamometer, dynamometer base, through-wall axle, step-up gear box, frock steelframe, frock base, through-wall axle passes through insulating elastic coupling and connects step-up gear box, the low-speed axle of step-up gear box is used for the electromagnetic compatibility load test of commercial car driving system and passenger car power assembly, the high-speed axle is used for the electromagnetic compatibility load test of passenger car motor; the anechoic chamber comprises wave-absorbing wedge, antenna, shielding data acquisition box, test table and grounding copper bar. The utility model discloses can realize commercial car and passenger car driving system's electromagnetic compatibility loading test, can solve traditional test bench simultaneously and can not satisfy commercial car driving system and passenger car power assembly's low-speed big moment of torsion loading test and passenger car motor high-speed loading test simultaneously.

Description

General loading test system for electromagnetic compatibility of power systems of commercial vehicle and passenger vehicle

Technical Field

The utility model relates to a general loading test system of commercial car and passenger car driving system electromagnetic compatibility, concretely relates to commercial car and passenger car driving system electromagnetic compatibility loading test bench.

Background

In the electromagnetic compatibility loading test of the traditional commercial vehicle and passenger vehicle power system, the loading test rotating speed of the commercial vehicle motor is required to be not lower than 4500rpm, the loading test rotating speed of the commercial vehicle electric assembly is as low as 2000rpm, but the torque is as high as 4500 Nm. The loading test of the passenger car motor requires a higher rotating speed which is up to 20000rpm and a torque which is as low as about 500Nm, and the loading test of the passenger car electric assembly requires a rotating speed of 3000rpm and a torque of about 1500 Nm. Under the test requirement of large torque, the transmission shaft is required to be large, and under the condition that the linear speed of the bearing is relatively fixed, the limit speed of the transmission shaft is reduced, namely the loading test requirement of high speed and large torque is difficult to realize simultaneously. The traditional solution is to set two test benches to respectively realize corresponding test requirements, even sometimes three test benches are needed to respectively realize the loading test of high-speed small torque, medium-speed medium torque and low-speed large torque, the manufacturing cost is high, the occupied field is large, and meanwhile, the workload of later maintenance test is greatly increased.

SUMMERY OF THE UTILITY MODEL

An object of the utility model is to provide a general load test system of commercial car and passenger car driving system electromagnetic compatibility can solve traditional test bench and can not satisfy the load test to the medium rotational speed of commercial car motor, the load test of the electronic assembly low-speed big moment of torsion of commercial car right and the load test to the high-speed little moment of torsion of passenger car motor, the load test of the medium rotational speed of the electronic assembly of passenger car simultaneously.

The purpose of the utility model can be realized by the following technical scheme:

the utility model provides a general loading test system of commercial car and passenger car driving system electromagnetic compatibility, includes test bench main part, anechoic chamber, shielding control room, shielding anechoic chamber, the test bench main part includes dynamometer machine and removes base, dynamometer machine upper base and dynamometer machine lower base, the power of dynamometer machine is passed to by the test piece motor through wall axle, step-up gear box, the motor is installed on the frock steelframe, the frock steelframe is installed on the base, the dynamometer machine is installed on removing the mount pad, it installs on dynamometer machine upper base to remove the mount pad, is provided with the guide way between the two, allows to remove the mount pad on axial slip, on dynamometer machine upper base arranges dynamometer machine lower base in, installs insulating shock attenuation leveling block between the two, insulating shock pad is installed to the dynamometer machine base, stalling mechanism is installed to the output shaft of dynamometer machine, The device comprises a torque sensor, an insulating elastic coupling, a wall penetrating shaft, a darkroom shielding wall body, a speed-up gear box, a tool steel frame, a T-shaped groove, a vibration damping pad, a lubricating and cooling oil tank, a tool upper base, a tool lower base, a tool shaft, a vibration damping pad, a T-shaped groove and a vibration damping pad, wherein the torque sensor and the insulating elastic coupling are arranged on the tool steel frame, the tool upper base is arranged on the tool steel frame, the wall penetrating shaft is arranged on the darkroom shielding wall body, one side of the wall penetrating shaft is fixed on the upper base, when the tested piece is a commercial vehicle power system or a passenger vehicle electric assembly, a ball cage coupler is mounted on a large-torque output shaft of the speed-increasing gear box and connected with the tested piece, an upper tooling base is arranged on a lower tooling base, an insulating damping leveling block is also mounted between the upper tooling base and the lower tooling base, and an insulating damping cushion and a shielding cushion block are mounted below the lower tooling base; considering the low rotating speed and other use conditions of the wall-penetrating transmission shaft pair, the wall-penetrating shaft can adopt a transmission scheme of a non-metal shaft, such as a carbon fiber long shaft and a glass fiber long shaft, and the dynamometer and the tool steel frame can be arranged on a single-layer base;

the anechoic chamber comprises wave-absorbing wedge points, an antenna, a shielding type data acquisition box, a test table and a grounding copper bar, wherein the wave-absorbing wedge points are installed on a shielding metal wall of the anechoic chamber, the test table is connected with the shielding metal wall through the grounding copper bar, a tested motor controller is placed on the test table, the motor controller is connected with a motor through a tested cable, the antenna faces the motor controller, the motor and the tested cable, and the shielding type data acquisition box is installed below an elevated floor and used for acquiring vibration and temperature signals of a wall-penetrating shaft, vibration and temperature signals of a speed-up gear box and vibration signals of a tool steel frame;

the shielding anechoic chamber comprises a battery simulator, a data acquisition cabinet, a frequency converter and a cooler, wherein the frequency converter provides electric energy for the dynamometer, the cooler provides circulating cooling liquid for the dynamometer and the motor, the battery simulator provides electric energy for the motor through a motor controller, and the data acquisition cabinet acquires signals of vibration, temperature and rotating speed of the dynamometer, torque and rotating speed signals of a torque sensor, vibration and temperature signals of a wall-penetrating shaft, flow, pressure, temperature and the like of the cooler and integrates signals transmitted by a shielding type data acquisition box;

the shielding control room comprises a receiver, a main control console and a work control cabinet, wherein the receiver receives antenna signals in the anechoic chamber and transmits the antenna signals to the main control console, and the work control cabinet receives related signals of the motor controller and signals of the data acquisition cabinet and transmits the signals to the main control console.

Preferably, the bottom of the speed-increasing gear box is provided with an insulating shock pad and is arranged on a tool steel frame.

Preferably, the speed-increasing gear box is provided with an oil tank for lubricating and cooling and is arranged on the lower base of the tool.

Preferably, the upper base of the tool is provided with a T-shaped groove, and a tested piece support is installed on the upper base of the tool.

Preferably as above-mentioned scheme, when being passenger car motor by the test piece, the high-speed output shaft of increasing gear installs the frock axle and connects the motor that awaits measuring, the motor passes through the frock dish and installs on the frock steelframe after the transition, when being commercial car driving system or passenger car electric assembly by the test piece, the big moment of torsion output shaft installation ball cage coupling of increasing gear low-speed connects by the test piece, it is fixed by being supported by the test piece support by the test piece.

Preferably, the middle of the mounting plate for mounting the tested piece on the tool steel frame is provided with a reinforcing rib.

Preferably, the through-wall shaft can adopt a transmission scheme of a non-metal shaft, such as a carbon fiber long shaft and a glass fiber long shaft, and the dynamometer and the tooling steel frame can be arranged on a single-layer base.

The utility model has the advantages that: insulating shock pad is installed to the step-up gear box bottom to install on the frock steelframe, insulating shock pad is made by special insulating shock-absorbing material, can guarantee to be insulating between step-up gear box and the frock steelframe, prevents electromagnetic interference, effectively attenuates step-up gear box's vibration simultaneously. The speed-increasing gear box is installed on the tool steel frame, the perpendicularity and the coaxiality of the centering hole of the tested piece on the installation surfaces of the output shaft of the speed-increasing gear box and the tested piece installed on the tool steel frame are well adjusted, a kit with strong integrity is formed, and later maintenance is facilitated.

The speed increasing gear box is provided with an oil tank for lubricating and cooling, is arranged on the lower base of the tool and is embedded into the upper base of the tool, so that the occupied space is reduced.

The upper base of the tool is provided with a T-shaped groove, and the upper base is provided with a tested piece support, so that the tool can adapt to tested pieces with different sizes and shapes.

When the tested piece is a passenger car motor, the tool shaft is installed on the high-speed output shaft of the speed-increasing gearbox and connected with the motor to be tested, the motor is installed on the tool disc firstly, then the motor is installed on the tool steel frame, a centering hole matched with the tool disc is formed in the installation surface of the tool steel frame, the verticality and the coaxiality of the centering hole and the high-speed output shaft of the speed-increasing gearbox are adjusted well, and the tested piece can be conveniently installed and centered in the later period; when being commercial car driving system or passenger car electric assembly by the test piece, the big moment of torsion output shaft installation ball cage shaft coupling of acceleration gear box low-speed is connected by the test piece, by the test piece by being supported by the test piece support fixed, by the test piece support mounting on the T type groove of base on the frock, simplify the centering, easy to assemble can adapt to polytype by the test piece.

Install step-up gear on the frock steelframe, lead to the installation of frock steelframe to be strengthened by the mounting panel span of test piece, rigidity is less, and natural frequency is lower, consequently sets up the strengthening rib at the middle part, can effectively improve the rigidity of frock steelframe, reduces the vibration.

The rotational speed of considering through-wall transmission shaft is lower, consequently can adopt the transmission scheme of nonmetal through-wall axle, like carbon fiber through-wall axle and glass fiber through-wall axle, considers under other in service conditions, dynamometer machine and frock steelframe can install on the individual layer base.

Drawings

In order to facilitate understanding for those skilled in the art, the present invention will be further described with reference to the accompanying drawings.

FIG. 1 is an overall layout of the present invention;

FIG. 2 is a schematic view of the overall structure of the main body of the test bed of the present invention;

FIG. 3 is a front view of the main body of the test bed of the present invention;

FIG. 4 is a right side view of the main body of the test bed of the present invention;

FIG. 5 is a left side view of the main body of the test bed of the present invention;

FIG. 6 is a top view of the main body of the test bed of the present invention mounted with a passenger car motor;

FIG. 7 is a top view of the electric assembly mounted on the main body of the test bed of the present invention;

FIG. 8 is a schematic structural view of the test bed main body of the present invention adopting a non-metal through-wall shaft scheme;

FIG. 9 is a schematic structural view of the test bed body of the present invention adopting a single-layer base solution;

in the figure: 1. a test bed main body; 2. an anechoic chamber; 3. shielding the control room; 4. shielding the anechoic chamber; 5. a dynamometer; 6. moving the mounting seat; 7. a dynamometer upper base; 8. a dynamometer lower base; 9. a locked-rotor mechanism; 10. a torque sensor; 11. an insulating elastic coupling; 12. a wall penetrating shaft; 13. a speed-increasing gear box; 14. a tooling shaft; 15. a steel frame is assembled; 16. a tooling plate; 17. an electric motor; 18. a tested piece bracket; 19. an oil tank; 20. a base is arranged on the tool; 21. an insulating damping leveling block; 22. a lower base of the tool; 23. an insulating shock pad; 24. shielding the cushion block; 25. reinforcing ribs; 26. a ball cage coupler; 27. an electric assembly; 28. a non-metallic through-wall shaft; 29. a through-wall shaft waveguide support; 30. a dynamometer single-layer base; 31. a single-layer base of the tool; 32. a receiver; 33. a main console; 34. a work control cabinet; 35. a battery simulator; 36. a data acquisition cabinet; 37. a frequency converter; 38. a cooling machine; 39. wave-absorbing splitting; 40. a tested cable; 41. an antenna; 42. a shielded data collection box; 43. a motor controller; 44. a test table; 45. and a grounding copper bar.

Detailed Description

The technical solution of the present invention will be described clearly and completely with reference to the following embodiments, and it should be understood that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by a person of ordinary skill in the art without creative efforts belong to the protection scope of the present invention.

Referring to fig. 1-9, a universal loading test system for electromagnetic compatibility of a power system of a commercial vehicle and a passenger vehicle comprises a test bed main body 1, an anechoic chamber 2, a shielding control chamber 3 and a shielding anechoic chamber 4, wherein the test bed main body 1 comprises a dynamometer 5, a movable mounting seat 6, an upper dynamometer base 7 and a lower dynamometer base 8, the power of the dynamometer 5 is transmitted to a tested motor 17 through a wall shaft 12 and a step-up gear box 13, the motor 17 is mounted on a tooling steel frame 15, the tooling steel frame is mounted on an upper tooling base 20, the dynamometer 5 is mounted on the movable mounting seat 6, the movable mounting seat 6 is mounted on the upper dynamometer base 7, a guide groove is arranged between the two to allow the movable mounting seat 6 to slide in the axial direction, the upper dynamometer base 7 is arranged on the lower dynamometer base 8, an insulating leveling block 21 is mounted between the two, and an insulating damping cushion 23 is mounted on the lower dynamometer base 8, the output shaft of the dynamometer 5 is provided with a locked rotor mechanism 9, a torque sensor 10 and an insulating elastic coupling 11, the locked rotor mechanism is connected with a wall penetrating shaft 12, the wall penetrating shaft 12 penetrates through and is connected with a darkroom shielding wall, one side of the darkroom shielding wall is fixed on a dynamometer upper base 7 outside a darkroom, the other side of the darkroom shielding wall is fixed on a tooling upper base 20 inside the darkroom, insulating shock-absorbing pads 23 are respectively arranged between the wall penetrating shaft 12 and the dynamometer upper base 7 as well as between the tooling upper base 20, the wall penetrating shaft 12 is connected with a speed-up gear box 13 through the insulating elastic coupling 11, the speed-up gear box 13 is arranged on a tooling steel frame 15, an insulating shock-absorbing pad 23 is arranged between the wall penetrating shaft 12 and the dynamometer upper base 7 as well as between the tooling upper base 20, an oil tank 19 for lubricating and cooling of the speed-up gear box 13 is arranged on a tooling lower base 22, the middle part of a tool steel frame 14 is provided with a reinforcing rib, the tool steel frame 14 is installed on an upper tool base 20, a T-shaped groove is formed in the upper tool base 20 and is provided with a tested piece support 18, when the tested piece is a commercial vehicle power system or a passenger vehicle electric assembly, a high-torque output shaft of a speed-increasing gear box 13 is provided with a ball cage coupler and connected with the tested piece, the upper tool base 20 is arranged on a lower tool base 22, an insulating damping leveling block 21 is also installed between the upper tool base and the lower tool base 22, and an insulating damping cushion 25 and a shielding cushion block 24 are installed below the lower tool base 22; considering the low rotating speed and other use conditions of the wall-through transmission shaft pair, the wall-through shaft 12 can adopt a transmission scheme of a non-metal shaft, such as a carbon fiber long shaft and a glass fiber long shaft, and the dynamometer 5 and the tooling steel frame 15 can be arranged on a single-layer base;

the anechoic chamber 2 comprises a wave-absorbing wedge 39, an antenna 41, a shielding type data acquisition box 42, a test table 44 and a grounding copper bar 45, wherein the wave-absorbing wedge 39 is installed on a shielding metal wall of the anechoic chamber 2, the test table 44 is connected with the shielding metal wall through the grounding copper bar 45, a tested motor controller 43 is placed on the test table 44, the motor controller 43 is connected with the motor 17 through a tested cable 40, the antenna 41 faces the motor controller 43, the motor 17 and the tested cable 40, and the shielding type data acquisition box 42 is installed under an overhead floor and used for acquiring vibration and temperature signals of a wall-penetrating shaft 12, vibration and temperature signals of the speed-up gear box 13 and vibration signals of the tool steel frame 15;

the shielding anechoic chamber 4 comprises a battery simulator 35, a data acquisition cabinet 36, a frequency converter 37 and a cooler 38, wherein the frequency converter 37 provides electric energy for the dynamometer 5, the cooler 38 provides circulating cooling liquid for the dynamometer 5 and the motor 17, the battery simulator 35 provides electric energy for the motor 17 through a motor controller 43, and the data acquisition cabinet 36 acquires signals of vibration, temperature and rotating speed of the dynamometer 5, torque and rotating speed signals of the torque sensor 10, vibration and temperature signals of the through-wall shaft 12, flow, pressure, temperature and the like of the cooler 38 and integrates signals transmitted by a shielding type data acquisition box 42;

the shielding control room 3 comprises a receiver 32, a main console 33 and an industrial control cabinet 34, wherein the receiver 32 receives signals of an antenna 41 in the anechoic chamber 2 and transmits the signals to the main console 33, and the industrial control cabinet 34 receives related signals of a motor controller 43 and signals of a data acquisition cabinet 36 and transmits the signals to the main console 33.

Insulating shock pad 23 is installed to step-up gear 13 bottom to install on frock steelframe 15, insulating shock pad 23 is made by special insulating shock-absorbing material, can guarantee to be insulating between step-up gear 13 and the frock steelframe 15, prevents electromagnetic interference, effectively attenuates step-up gear 13's vibration simultaneously. The speed-increasing gear box 13 is installed on the tool steel frame 15, the perpendicularity and the coaxiality of the centering hole of the tested piece on the output shaft of the speed-increasing gear box 13 and the installation surface of the tested piece on the tool steel frame 15 are well adjusted, so that a kit with high integrity is formed, and later maintenance is facilitated.

The speed increasing gear box 13 is provided with an oil tank 19 for lubricating and cooling, and is arranged on a lower base 22 of the tool and embedded into an upper base 20 of the tool, so that the occupied space is reduced.

The upper base 20 of the tool is provided with a T-shaped groove, and a tested piece support 18 is arranged on the upper base, so that the tool can adapt to tested pieces with different sizes and shapes.

When the tested piece is a passenger car motor 17 (as shown in fig. 6), the tool shaft 14 is installed on the high-speed output shaft of the speed-increasing gear box 13 and is connected with the motor 17 to be tested, the motor 17 is installed on the tool disc 16 firstly, then the tool disc is installed on the tool steel frame 15, a centering hole matched with the tool disc 16 is arranged on the installation surface of the tool steel frame 15, the perpendicularity and the coaxiality of the centering hole and the high-speed output shaft of the speed-increasing gear box 13 are adjusted well, and the later-period mounting centering by the tested piece; when the tested piece is a commercial vehicle power system or a passenger vehicle electric assembly 27 (as shown in fig. 7), the low-speed large-torque output shaft of the speed-increasing gear box 13 is provided with the ball cage coupler 26 and connected with the tested piece, the tested piece is supported and fixed by the tested piece support 18, and the tested piece support 18 is arranged on a T-shaped groove of the tool upper base 20, so that the centering is simplified, the installation is convenient, and the device can adapt to various tested pieces.

Install step-up gear 13 on the frock steelframe 15, lead to the installation of frock steelframe 15 to be strengthened by the mounting panel span of test piece, rigidity is less, and natural frequency is lower, consequently sets up strengthening rib 25 at the middle part, can effectively improve frock steelframe 15's rigidity, reduces the vibration.

Considering that the rotating speed of the through-wall transmission shaft is low, a transmission scheme (such as a carbon fiber through-wall shaft and a glass fiber through-wall shaft) of the nonmetal through-wall shaft 28 can be adopted (such as fig. 7), when the nonmetal through-wall shaft 28 is adopted, a through-wall shaft waveguide support 29 is arranged below the nonmetal through-wall shaft 28, considering other use conditions, the dynamometer 5 can be installed on a dynamometer single-layer base 30, and the tooling steel frame 15 can be installed on a tooling single-layer base 31 as shown in fig. 8.

The preferred embodiments of the present invention disclosed above are intended only to help illustrate the present invention. The preferred embodiments are not intended to be exhaustive or to limit the invention to the precise embodiments disclosed. Obviously, many modifications and variations are possible in light of the above teaching. The embodiments were chosen and described in order to best explain the principles of the invention and its practical applications, to thereby enable others skilled in the art to best understand the invention for and utilize the invention. The present invention is limited only by the claims and their full scope and equivalents.

Claims (7)

1. The utility model provides a general load test system of commercial car and passenger car driving system electromagnetic compatibility, includes test bench main part (1), anechoic chamber (2), shielding control room (3), shielding anechoic chamber (4), test bench main part (1) is base (7) and base (8) under dynamometer machine on dynamometer machine (5) and removal mount pad (6), dynamometer machine, and the power of dynamometer machine (5) is passed to by test piece motor (17) through wearing wall axle (12), step-up gear box (13), and motor (17) are installed on frock steelframe (15), and install on frock last base (20), its characterized in that: the dynamometer (5) is arranged on a movable mounting seat (6), the movable mounting seat (6) is arranged on a dynamometer upper base (7), a guide groove is arranged between the movable mounting seat (6) and the dynamometer upper base (7), the movable mounting seat (6) slides on the dynamometer upper base (7), the dynamometer upper base (7) is arranged on a dynamometer lower base (8), an insulating damping leveling block (21) is arranged between the dynamometer upper base (7) and the dynamometer lower base (8), an insulating damping cushion (23) is arranged on the dynamometer lower base (8), an output shaft of the dynamometer (5) is sequentially connected with a blocking mechanism (9), a torque sensor (10), an insulating elastic coupling (11) and a wall penetrating shaft (12), the wall penetrating shaft (12) penetrates through and is connected with a darkroom shielding wall, one side of the wall penetrating shaft (12) is fixed on the dynamometer upper base (7) outside the darkroom, the other side of a wall penetrating shaft (12) is fixed on an upper fixture base (20) in a darkroom, insulating shock-absorbing pads (23) are respectively arranged between the wall penetrating shaft (12) and an upper fixture base (7) of a dynamometer and between the wall penetrating shaft and the upper fixture base (20), the wall penetrating shaft (12) is connected with a speed-up gearbox (13) through an insulating elastic coupling (11), the speed-up gearbox (13) is arranged on a fixture steel frame (15), the insulating shock-absorbing pads (23) are arranged between the speed-up gearbox (13) and the fixture steel frame (15), an oil tank (19) for lubricating and cooling, which is arranged on the speed-up gearbox (13), is arranged on a lower fixture base (22), a high-speed output shaft of the speed-up gearbox (13) is connected with a motor (17) to be tested through a fixture shaft (14), the motor (17) is arranged on the fixture steel frame (15) after being transited through a fixture disc (16), the fixture steel frame (15) is arranged on a fixture upper base (20), a T-shaped groove is formed in the fixture upper base (20), and a tested piece support (18) for a commercial vehicle power system or a passenger vehicle electric assembly (27) is arranged;

when being commercial car driving system or passenger car electric assembly (27) by the test piece, step-up gear box (13) big moment of torsion output shaft installation ball cage shaft coupling is connected by the test piece, and on base (20) were arranged in frock lower base (22) on the frock, also installed insulating shock attenuation leveling block (21) between base (20) and the frock lower base (22) on the frock, installed insulating shock pad (23) and shielding cushion (24) under frock lower base (22).

2. The electromagnetic compatibility universal loading test system for the power system of the commercial vehicle and the passenger vehicle as claimed in claim 1, wherein the anechoic chamber (2) comprises a wave-absorbing wedge (39), an antenna (41), a shielding type data acquisition box (42), a test table (44) and a grounding copper bar (45), the wave-absorbing wedge (39) is installed on a shielding metal wall of the anechoic chamber (2), the test table (44) is connected with the shielding metal wall through the grounding copper bar (45), a tested motor controller (43) is placed on the test table (44), the motor controller (43) is connected with the motor (17) through a tested cable (40), the antenna (41) faces the motor controller (43), the motor (17) and the tested cable (40), and the shielding type data acquisition box (42) is installed under an overhead floor and used for acquiring vibration and temperature signals of the wall-penetrating shaft (12), Vibration and temperature signals of the speed-increasing gear box (13) and vibration signals of the tool steel frame (15).

3. The universal loading test system for electromagnetic compatibility of power systems of commercial vehicles and passenger vehicles according to claim 1, the shielding sound-deadening chamber (4) is characterized by comprising a battery simulator (35), a data acquisition cabinet (36), a frequency converter (37) and a cooling machine (38), wherein the frequency converter (37) provides electric energy for the dynamometer (5), the cooling machine (38) provides circulating cooling liquid for the dynamometer (5) and the motor (17), the battery simulator (35) provides electric energy for the motor (17) through a motor controller (43), and the data acquisition cabinet (36) acquires vibration, temperature and rotating speed signals of the dynamometer (5), torque and rotating speed signals of a torque sensor (10), vibration and temperature signals of a wall penetrating shaft (12) and flow, pressure and temperature signals of the cooling machine (38) and integrates signals transmitted by a shielding type data acquisition box (42).

4. The electromagnetic compatibility universal loading test system for the power system of the commercial vehicle and the passenger vehicle is characterized in that the shielding control room (3) comprises a receiver (32), a main control console (33) and an industrial control cabinet (34), wherein the receiver (32) receives signals of an antenna (41) in the anechoic chamber (2) and transmits the signals to the main control console (33), and the industrial control cabinet (34) receives related signals of a motor controller (43), signals of a data acquisition cabinet (36) and transmits the signals to the main control console (33).

5. The universal loading test system for electromagnetic compatibility of power systems of commercial vehicles and passenger vehicles according to claim 1, characterized in that an insulating shock pad (23) positioned on a tool steel frame (15) is installed at the bottom of the speed-increasing gear box (13).

6. The electromagnetic compatibility universal loading test system for the power system of the commercial vehicle and the passenger vehicle as claimed in claim 1, characterized in that when the tested piece is a motor (17) of the passenger vehicle, the high-speed output shaft of the step-up gear box (13) is provided with a tool shaft (14) and connected with the motor (17) to be tested, and the motor (17) is arranged on a tool steel frame (15) after being transited through a tool disc (16); when the tested piece is a power system of a commercial vehicle or an electric assembly (27) of a passenger vehicle, a high-torque output shaft of the speed-increasing gear box (13) is provided with the ball cage coupling (26) and connected with the tested piece, and the tested piece is arranged on the tested piece bracket (18) and supported and fixed by the tested piece bracket (18).

7. The electromagnetic compatibility universal loading test system for the power system of the commercial vehicle and the passenger vehicle as claimed in claim 1, characterized in that for a test with a low rotating speed, when the wall penetrating shaft (12) adopts a non-metal wall penetrating shaft (28), a wall penetrating shaft waveguide bracket (29) is arranged below the non-metal wall penetrating shaft (28); for the test with high ground flatness and low leveling requirement, the dynamometer (5) is installed on a dynamometer single-layer base (30) below the dynamometer, and the tooling steel frame (15) is installed on a tooling single-layer base (31) below the dynamometer.

Images