CN211477610U

CN211477610U - Multifunctional gearbox testing device

Info

Publication number: CN211477610U
Application number: CN202020320190.6U
Authority: CN
Inventors: 于社章
Original assignee: Wuxi Dajinyi Technology Co ltd
Current assignee: Wuxi Dajinyi Technology Co ltd
Priority date: 2020-03-13
Filing date: 2020-03-13
Publication date: 2020-09-11
Anticipated expiration: 2030-03-13

Abstract

The utility model relates to a multifunctional gearbox testing device, which comprises a testing rack, wherein two ends of the testing rack are provided with a second loading mechanism, a first loading mechanism and a main driving mechanism, wherein the second loading mechanism, the first loading mechanism and the main driving mechanism can axially move to respectively simulate two front wheels of an automobile, and the output ends of the second loading mechanism, the first loading mechanism and the main driving mechanism can respectively extend out of the auxiliary clamping mechanism and the wallboard positioning mechanism to extend above the testing rack; after the gearbox is adjusted and positioned by the test bench, the gearbox is fixed by the auxiliary clasping mechanism or the wallboard positioning mechanism according to different types of machines and is mechanically connected with corresponding output; the vibration data acquisition mechanism is used for completing test data acquisition, so that the test operation that the same platform is used for testing different types of gearboxes is complete, the field is saved, and the efficiency and the equipment utilization rate are improved.

Description

Multifunctional gearbox testing device

Technical Field

The utility model belongs to the technical field of gearbox testing arrangement technique and specifically relates to a multi-functional gearbox testing arrangement.

Background

Current gearbox testing arrangement can only be applicable to the test of mixing dynamic gearbox or pure electric drive single type gearbox performance alone usually, and the compatibility is poor, and the degree of integrating of each module is low, leads to the test procedure loaded down with trivial details, and test operation test situation is complicated, is difficult for obtaining unified evaluation standard, and the uniformity that the product was evaluated promptly is poor, brings very big influence for off-line product quality and qualification rate.

SUMMERY OF THE UTILITY MODEL

The applicant aims at the defects in the prior art, provides a multifunctional gearbox testing device with a reasonable structure, is strong in compatibility, can be used for completing the online test of the process performance and the quality state of two gearboxes with different types of hybrid gearbox/pure electric drive by using one machine, is convenient to operate, is high in testing precision, and is favorable for improving the consistency of evaluation results.

The utility model discloses the technical scheme who adopts as follows:

a multifunctional gearbox testing device comprises a base assembly, wherein a testing bench is arranged in the middle of the base assembly, the base assemblies at two ends of the testing bench are provided with an auxiliary holding mechanism and a wallboard positioning mechanism which are mutually corresponding and used for fixing gearboxes of different types, one end of the base assembly is provided with a first load mechanism and a main drive mechanism which move along the axial direction, the output ends of the first load mechanism and the main drive mechanism can penetrate through the wallboard positioning mechanism and extend to the upper part of the testing bench, the other end of the base assembly is provided with a second load mechanism which moves along the axial direction, and the output end of the second load mechanism can also penetrate through the auxiliary holding mechanism and extend; after the gearbox is adjusted in position by the test bench, the gearbox is firmly fixed by the auxiliary enclasping mechanism or the wallboard positioning mechanism and is butted with an oil circuit and a circuit on the gearbox;

when the pure electric drive gearbox is tested, the first load mechanism and the second load mechanism respectively simulate two front wheels of an automobile and are respectively in mechanical connection with the gearbox; when the hybrid drive gearbox is tested, the main drive mechanism and the gearbox form mechanical connection to simulate the output of an automobile engine; and a vibration data acquisition mechanism is also arranged above the test bench.

As a further improvement of the above technical solution:

the structure of the test bench is as follows: the device comprises a bottom plate, wherein a group of first guide rails are arranged on the bottom plate, and a first mounting plate sliding along the first guide rails is mounted on the first guide rails; the two sides of the upper surface of the first mounting plate are symmetrically provided with mounting frames, the inner side of each mounting frame at each side is provided with a plurality of rollers in transmission connection along the length direction, and the rollers at the two sides are in synchronous transmission; a lifting frame assembly is arranged on the first mounting plate between the mounting frames on the two sides; the structure of the lifting frame assembly comprises a driving cylinder fixed in the middle of a first mounting plate, the top of a piston rod of the driving cylinder is connected with a lifting plate arranged parallel to the first mounting plate, vertical guide sleeves are arranged on the first mounting plate on the periphery of the driving cylinder, and the lifting plate moves up and down along the vertical guide sleeves through guide pillars arranged at four corners of the bottom surface of the lifting plate.

One end of the first mounting plate is provided with a blocking cylinder for stopping a transmission tray for supporting the gearbox, and an RFID sensor for reading and writing data of a tested piece is arranged beside the blocking cylinder; the other end of the first mounting plate is provided with a pushing cylinder, an output rod of the pushing cylinder is connected with a cross rod, two sides of the cross rod are respectively connected with a pushing block through a longitudinal rod, the two pushing blocks respectively slide along a section of second guide rail, and the two second guide rails are symmetrically arranged on two sides of the upper surface of the first mounting plate and are perpendicular to the arrangement direction of the first guide rails; limiting plates are arranged on two sides of the middle of the bottom surface of the lifting plate, and limiting stop blocks matched with the limiting plates are arranged on the first mounting plate.

The mounting bracket below of one side running roller wherein is equipped with by motor drive, with the running roller transmission be connected drive wheel, one end is equipped with the driving roller of connecting the running roller of a set of running roller of both sides between two mounting brackets, the running roller of both sides passes through driving roller synchronous drive.

The structure of the wallboard positioning mechanism comprises a positioning frame, wherein the positioning frame is of a U-shaped structure and comprises a front end plate and side wall plates vertically arranged on two sides of the front end plate; a front mounting plate is arranged on the outer surface of the front end plate, a raised positioning plate extends outwards from the middle of the front mounting plate, and two first mounting through holes are formed in the positioning plate and are respectively used for the output ends of the first load mechanism and the main drive mechanism to pass through; the four corners of the front mounting plate of the outer ring of the positioning plate are distributed with a hydraulic input source and three first pressure plate assemblies respectively connected with the hydraulic input source, and the tested gearbox is pressed tightly through the first pressure plate assemblies.

An air gap sensor is arranged on the front end plate beside the front mounting plate, and a hydraulic butt plate and a circuit butt plate are arranged on the lower side of the front end plate.

The structure of the first pressure plate assembly comprises a pressure plate, one end of the pressure plate is hinged with the head of the hydraulic telescopic rod through a first pin shaft, the middle of the pressure plate is hinged with one ends of two movable pins through a second pin shaft, and the other ends of the two movable pins are connected with two ends of a rotating shaft; the hydraulic telescopic rod is driven by a hydraulic input source, and the rotating shaft is driven to rotate by a rotating cylinder; the other end of the pressure plate is provided with a wedge-shaped inclined plane.

The auxiliary holding mechanism and the wallboard positioning mechanism are in the same form, and a second mounting through hole with the function corresponding to that of the first mounting through hole is formed in the auxiliary holding mechanism and is used for the output end of the second loading mechanism to penetrate through; the auxiliary holding mechanism is also provided with three second pressure plate assemblies corresponding to the first pressure plate assembly in function, and the three second pressure plate assemblies are distributed at three vertexes of a triangle; the auxiliary clasping mechanism moves towards the direction close to or far away from the wallboard positioning mechanism along a group of third guide rails arranged on the base component.

The second loading mechanism has the structure that: the second mounting plate moves towards or away from the wallboard positioning mechanism along a group of fourth guide rails arranged on the base assembly; and a second differential is fixedly arranged on the second mounting plate, and the output end of the second differential is connected with a second output shaft penetrating through the auxiliary holding mechanism through a coupler and a bearing device.

The structure of the main driving mechanism comprises a main driving motor, wherein an output end coupler and a bearing device of the main driving motor are connected with a main output shaft penetrating through the wallboard positioning mechanism; the first loading mechanism structurally comprises a third mounting plate, and the third mounting plate moves towards or away from the auxiliary clasping mechanism along a group of fifth guide rails arranged on the base assembly; the third mounting plate is provided with a first differential and a transmission shaft, two ends of the third mounting plate are connected with the output end of the first differential and a first output shaft penetrating through the wallboard positioning mechanism through universal joints respectively, and a bearing device is arranged between the universal joints and the first output shaft.

The vibration data acquisition mechanism has the structure that: including the installation frame, the installation frame both sides are installed the action cylinder through the installing support respectively, and action cylinder piston rod end is equipped with vibration sensor, still is equipped with position sensor on the installing support on one side of the action cylinder.

An installation housing containing sound absorption materials is arranged outside the testing device, and an electrical cabinet and a gearbox oil heat exchange and filtration system of a tested gearbox are arranged on the installation housing; and the bottom of the base component is provided with a damping anchor.

The utility model has the advantages as follows:

the utility model has compact and reasonable structure and convenient operation, the auxiliary holding mechanism and the wallboard positioning mechanism are correspondingly arranged, and are respectively suitable for the fixation of gearboxes of different types to realize hydraulic and electrical connection, the automobile engine is simulated through the main driving mechanism, two front wheels of an automobile are simulated through the first loading mechanism and the second loading mechanism, and the gearboxes, the first loading mechanism and the second loading mechanism which are firmly fixed through the auxiliary holding mechanism or the wallboard positioning mechanism are connected with the output shaft of the main driving mechanism at the same time, so that the transmission of rotating speed and torque is realized; the vibration data acquisition mechanism is used for completing test data acquisition, so that the test operation that the same platform is used for testing different types of gearboxes is complete, the field is saved, and the efficiency and the equipment utilization rate are improved.

Simultaneously the utility model discloses still have following advantage:

the test bench is used for realizing position adjustment and positioning before the gearbox is fixed, adjusting the horizontal position through the roller, adjusting the vertical height through the lifting frame assembly, stopping through the stopping cylinder, and is convenient to operate and high in positioning precision; the auxiliary clasping mechanism or the wallboard positioning mechanism can be selectively moved towards the direction according to different types; after the gearbox is adjusted and positioned by the test bench, the gearbox is fixed by the auxiliary clasping mechanism or the wallboard positioning mechanism according to different types of machines and is mechanically connected with corresponding output;

the auxiliary holding mechanism and the wallboard positioning mechanism are similar in structure, and the distribution position of the first pressure plate assembly and the distribution position of the second pressure plate assembly are different according to different gear box designs, so that the firm positioning of different gear boxes is met;

the vibration data acquisition mechanism collects vibration data and cylinder actions through the sensor to finish test data acquisition, and has high test precision and convenient operation;

whole testing arrangement adopts the whole mechanical design of integration, and all hardware equipment such as main drive mechanism, load mechanism, test rack, wallboard positioning mechanism, supplementary mechanism, vibration data acquisition mechanism of holding tightly all install on the integrated base subassembly of area location of high positioning accuracy, and there are a plurality of shock attenuation lower margins in its bottom to support, and can direct mount in the mill consolidate ground or install on concrete platform basis after the equipment targets in place, simple to operate.

Drawings

Fig. 1 is a schematic perspective view of the present invention.

Fig. 2 is a schematic structural diagram of the test bench of the present invention.

Fig. 3 is another view of fig. 2.

Fig. 4 is a schematic view of the mounting structure of the carriage assembly in the test rig.

Figure 5 the utility model discloses wallboard positioning machine's schematic structure diagram.

Fig. 6 is another view of fig. 5.

Fig. 7 is an enlarged view of a portion a in fig. 5.

Fig. 8 is a schematic structural view of the auxiliary clasping mechanism.

Fig. 9 is another view of fig. 1.

Fig. 10 is a schematic structural view of a second loading mechanism according to the present invention.

Fig. 11 is another view of fig. 9.

Fig. 12 is a schematic structural diagram of the loading mechanism of the present invention.

Fig. 13 is a schematic structural diagram of the vibration data acquisition mechanism of the present invention.

Fig. 14 is another perspective of fig. 13.

Fig. 15 is a schematic structural view of the testing device in fig. 1 after a safety cover is installed outside the testing device.

Wherein: 1. a base assembly; 2. a test bench; 3. a second loading mechanism; 4. an auxiliary clasping mechanism; 5. a vibration data acquisition mechanism; 6. a wallboard positioning mechanism; 7. a main drive mechanism; 8. a first loading mechanism; 9. a third guide rail; 10. a fourth guide rail; 11. a bearing device; 12. a coupling; 13. a fifth guide rail; 14. installing a housing; 15. a transmission oil heat exchange filtration system; 16. an electrical cabinet; 17. damping feet; 201. a base plate; 202. a first guide rail; 203. a first mounting plate; 204. a mounting frame; 205. a roller; 206. a driving roller; 207. a lifting plate; 208. a driving cylinder; 209. a blocking cylinder; 210. an RFID sensor; 211. a driving wheel; 212. a push cylinder; 213. a push block; 214. a cross bar; 215. a second guide rail; 216. a limit stop block; 217. a limiting plate; 218. a vertical guide sleeve; 301. a second differential mechanism; 304. a second mounting plate; 305. a second output shaft; 402. a second mounting through hole; 406. a second platen assembly; 501. a mounting frame; 502. an actuating cylinder; 503. a vibration sensor; 504. a position sensor; 505. mounting a bracket; 601. a side wall panel; 602. a first mounting through hole; 603. a front mounting plate; 604. a front end plate; 605. a hydraulic input source; 606. a first platen assembly; 607. positioning a plate; 608. a circuit docking plate; 609. a hydraulic butt plate; 610. an air gap sensor; 6065. pressing a plate; 6062. a first pin shaft; 6061. a hydraulic telescopic rod; 6063. a second pin shaft; 6064. a movable pin; 6066. a rotating shaft; 701. a main drive motor; 702. a main output shaft; 801. a first differential mechanism; 802. a third mounting plate; 803. a drive shaft; 804. a first output shaft; 805. a universal joint.

Detailed Description

The following describes embodiments of the present invention with reference to the drawings.

As shown in fig. 1, the multifunctional gearbox testing device of the embodiment includes a base assembly 1, a testing bench 2 is arranged in the middle of the base assembly 1, the base assemblies 1 at two ends of the testing bench 2 are provided with an auxiliary clasping mechanism 4 and a wall plate positioning mechanism 6 which are corresponding to each other and used for fixing gearboxes of different types, one end of the base assembly 1 is provided with a first load mechanism 8 and a main driving mechanism 7 which move along the axial direction, output ends of the first load mechanism 8 and the main driving mechanism 7 can penetrate through the wall plate positioning mechanism 6 and extend to the upper side of the testing bench 2, the other end of the base assembly 1 is provided with a second load mechanism 3 which moves along the axial direction, and an output end of the second load mechanism can also penetrate through; after the gearbox is adjusted in position through the test bench 2, the gearbox is firmly fixed by the auxiliary enclasping mechanism 4 or the wallboard positioning mechanism 6 and is in butt joint with an oil circuit and a circuit on the gearbox;

when the pure electric drive gearbox is tested, the first load mechanism 8 and the second load mechanism 3 respectively simulate two front wheels of an automobile and are respectively in mechanical connection with the gearbox; when the hybrid drive gearbox is tested, the load mechanism I8 and the load mechanism II 3 are used for respectively simulating two front wheels of an automobile, and the main drive mechanism 7 and the gearbox are mechanically connected to simulate the output of an automobile engine;

and a vibration data acquisition mechanism 5 is also arranged above the test bench 2.

As shown in fig. 2 to 4, the test stage 2 has a structure of: the device comprises a bottom plate 201, wherein a group of first guide rails 202 are arranged on the bottom plate 201, and a first mounting plate 203 sliding along the first guide rails 202 is mounted on the first guide rails 202; the two sides of the upper surface of the first mounting plate 203 are symmetrically provided with mounting frames 204, the inner side of each mounting frame 204 is provided with a plurality of rollers 205 which are in transmission connection along the length direction, and the rollers 205 at the two sides are in synchronous transmission;

a lifting frame assembly is arranged on the first mounting plate 203 between the mounting frames 204 at the two sides; the structure of the lifting frame assembly comprises a driving air cylinder 208 fixed in the middle of a first mounting plate 203, the top of a piston rod of the driving air cylinder is connected with a lifting plate 207 arranged parallel to the first mounting plate 203, vertical guide sleeves 218 are arranged on the first mounting plate 203 around the driving air cylinder 208, and the lifting plate 207 moves up and down along the vertical guide sleeves 218 through guide posts arranged at four corners of the bottom surface of the lifting plate 207.

A blocking cylinder 209 for stopping a conveying tray for supporting the gearbox is arranged at one end of the first mounting plate 203, and an RFID sensor 210 for reading and writing data of a tested piece is arranged beside the blocking cylinder; the other end of the first mounting plate 203 is provided with a pushing cylinder 212, the output rod of the pushing cylinder is connected with a cross rod 214, two sides of the cross rod 214 are respectively connected with a pushing block 213 through a longitudinal rod, the two pushing blocks 213 respectively slide along a section of second guide rail 215, and the two second guide rails 215 are symmetrically arranged on two sides of the upper surface of the first mounting plate 203 and are perpendicular to the arrangement direction of the first guide rail 202; limiting plates 217 are arranged on two sides of the middle of the bottom surface of the lifting plate 207, and a limiting stop 216 matched with the limiting plates 217 is arranged on the first mounting plate 203.

A driving wheel 211 which is driven by a motor and is in transmission connection with the rollers 205 is arranged below the mounting frame 204 of the roller 205 on one side, a driving roller 206 which is used for connecting a group of rollers 205 on two sides is arranged at one end between the two mounting frames 204, and the rollers 205 on two sides are in synchronous transmission through the driving roller 206.

As shown in fig. 5-7, the structure of the wall plate positioning mechanism 6 includes a positioning frame, which is a U-shaped structure and includes a front end plate 604 and side wall plates 601 vertically disposed at two sides of the front end plate 604; a front mounting plate 603 is arranged on the outer surface of the front end plate 604, a raised positioning plate 607 extends outwards from the middle of the front mounting plate 603, and two first mounting through holes 602 are formed in the positioning plate 607 and are respectively used for the output ends of the first load mechanism 8 and the main drive mechanism 7 to pass through; the four corners of the front mounting plate 603 of the outer ring of the positioning plate 607 are distributed with a hydraulic input source 605 and three first pressure plate assemblies 606 respectively connected with the hydraulic input source 605, and the measured gearbox is pressed tightly by the first pressure plate assemblies 606.

An air gap sensor 610 is arranged on the front end plate 604 beside the front mounting plate 603, and a hydraulic butt plate 609 and a circuit butt plate 608 are arranged on the lower side of the front end plate 604.

The structure of the first pressure plate component 606 comprises a pressure plate 6065, one end of the pressure plate 6065 is hinged with the head of a hydraulic telescopic rod 6061 through a first pin shaft 6062, the middle part of the pressure plate 6065 is hinged with one ends of two movable pins 6064 through a second pin shaft 6063, and the other ends of the two movable pins 6064 are connected with two ends of a rotating shaft 6066; the hydraulic telescopic rod 6061 is driven by a hydraulic input source 605, and the rotating shaft 6066 is driven by a rotating cylinder to rotate; the other end of the pressure plate 6065 has a wedge-shaped slope.

As shown in fig. 8, the auxiliary clasping mechanism 4 and the wall plate positioning mechanism 6 have the same form, and a second mounting through hole 402 corresponding to the first mounting through hole 602 in function is formed in the auxiliary clasping mechanism for the output end of the second loading mechanism 3 to pass through; the auxiliary clasping mechanism 4 is also provided with three second pressure plate assemblies 406 corresponding to the first pressure plate assembly 606 in function, and the three second pressure plate assemblies 406 are distributed at three vertexes of a triangle; the auxiliary clasping mechanism 4 moves along a set of third guide rails 9 arranged on the base assembly 1 in a direction to approach or depart from the wallboard positioning mechanism 6.

As shown in fig. 9 and 10, the second loading mechanism 3 has the following structure: the second mounting plate 304 is included, and the second mounting plate 304 moves towards or away from the wallboard positioning mechanism 6 along a group of fourth guide rails 10 arranged on the base assembly 1; a second differential 301 is fixedly mounted on the second mounting plate 304, and the output end of the second differential 301 is connected with a second output shaft 305 penetrating through the auxiliary clasping mechanism 4 through a coupler 12 and a bearing device 11.

As shown in fig. 11 and 12, the main driving mechanism 7 includes a main driving motor 701, an output end coupling 12 and a bearing device 11 of which are connected with a main output shaft 702 passing through the wall plate positioning mechanism 6; the first loading mechanism 8 structurally comprises a third mounting plate 802, and the third mounting plate 802 moves towards or away from the auxiliary clasping mechanism 4 along a group of fifth guide rails 13 arranged on the base assembly 1; the third mounting plate 802 is provided with a first differential 801 and a transmission shaft 803, two ends of the third mounting plate are respectively connected with the output end of the first differential 801 and a first output shaft 804 penetrating through the wall plate positioning mechanism 6 through a universal joint 805, and a bearing device 11 is arranged between the universal joint 805 and the first output shaft 804.

As shown in fig. 13 and 14, the vibration data acquisition mechanism 5 has the following structure: the device comprises a mounting frame 501, wherein action cylinders 502 are respectively mounted on two sides of the mounting frame 501 through mounting brackets 505, a vibration sensor 503 is arranged at the end part of a piston rod of each action cylinder 502, and a position sensor 504 is further arranged on the mounting bracket 505 beside the action cylinders 502.

As shown in fig. 15, an installation housing 14 containing sound-absorbing material is arranged outside the testing device, and an electrical cabinet 16 and a gearbox oil heat exchange and filtration system 15 of the tested gearbox are arranged on the installation housing 14; the bottom of the base component 1 is provided with a damping anchor 17.

In the implementation process of the utility model, the gearbox is tested by the test bench 2 and positioned before being fixed, the roller 205 is used for horizontally conveying the gearbox, the driving cylinder 208 drives the push block 213 to move through the cross rod 214, the horizontal position of the gearbox is adjusted in an auxiliary way, the lifting frame component is used for adjusting the vertical height after the horizontal position is adjusted in place, and the blocking cylinder 209 prevents the horizontal movement range from exceeding the limit; the RFID sensor 210 is used for reading and writing data of the tested piece;

when testing the A model, test bench 2 will be surveyed a jack-up, along first guide rail 202 toward supplementary 4 direction translations of mechanism of holding tightly, supplementary second clamp plate assembly 406 on the mechanism 4 of holding tightly adds holds, and test bench 2 whereabouts rises again after the test and will be surveyed a tak away. When testing the model B, the test bench 2 jacks up the tested piece, and translates the tested piece along the first guide rail 202 towards the wallboard positioning mechanism 6, so as to perform the same operation.

The auxiliary clasping mechanism 4 and the wall plate positioning mechanism 6 are basically the same in structure, and the distribution positions of the first pressure plate component 606 and the second pressure plate component 406 are different, so that the auxiliary clasping mechanism is suitable for firmly fixing A/B (pure electric drive/hybrid drive) gearboxes of different types;

the air gap sensor 610 is used for detecting whether the gearbox is attached in place or not, and after the gearbox is fixed well by the auxiliary enclasping mechanism 4 or the wallboard positioning mechanism 6;

the main driving mechanism 7, the load mechanism I8 and the load mechanism II 3 respectively simulate an automobile engine and two front wheels, output shafts of the main driving mechanism 7, the load mechanism I8 and the load mechanism II 3 are respectively in mechanical connection with a transmission, meanwhile, the auxiliary clasping mechanism 4 or the wall plate positioning mechanism 6 is used for realizing connection with an oil circuit and a circuit of a gearbox, a transmission shaft 803 on the load mechanism I8 is connected with a differential mechanism I801 and a first output shaft 804 through a universal joint 805, and the purpose is that the direction of rotating speed and torque is changed through the design due to the size of a motor;

the first loading mechanism 8 and the second loading mechanism 3 can be adjusted in position along the corresponding guide rails along the upper surface of the base assembly so as to be compatible with gearboxes with different sizes; when testing a pure electric drive gearbox, the main drive mechanism 7 is not mechanically connected with the gearbox, and when testing a hybrid drive gearbox, the main drive mechanism 7 is required to be mechanically connected with the gearbox.

The vibration data acquisition mechanism 5 is used for acquiring vibration data by pushing a vibration sensor 503 onto a measured piece by using an action cylinder 502, and the position sensor is used for detecting whether the distance meets a preset range.

The above description is for the purpose of explanation and not limitation of the invention, which is defined in the claims, and any modifications may be made within the scope of the invention.

Claims

1. The utility model provides a multi-functional gearbox testing arrangement which characterized in that: the test bench comprises a base assembly (1), wherein a test bench (2) is arranged in the middle of the base assembly (1), the base assemblies (1) at the two ends of the test bench (2) are provided with an auxiliary enclasping mechanism (4) and a wallboard positioning mechanism (6) which correspond to each other and are used for fixing gearboxes of different types, one end of the base assembly (1) is provided with a first load mechanism (8) and a main drive mechanism (7) which move along the axial direction, the output ends of the first load mechanism and the main drive mechanism can penetrate through the wallboard positioning mechanism (6) and extend to the upper part of the test bench (2), the other end of the base assembly (1) is provided with a second load mechanism (3) which moves along the axial direction, and the output end of the second load mechanism can also penetrate through; after the gearbox is adjusted in position through the test bench (2), the gearbox is firmly fixed by the auxiliary holding mechanism (4) or the wallboard positioning mechanism (6) and is in butt joint with an oil circuit and a circuit on the gearbox;

when the pure electric drive gearbox is tested, the first load mechanism (8) and the second load mechanism (3) respectively simulate two front wheels of an automobile and are respectively in mechanical connection with the gearbox; when testing the gearbox driven by hybrid, the main driving mechanism (7) is also utilized to form mechanical connection with the gearbox so as to simulate the output of an automobile engine; and a vibration data acquisition mechanism (5) is further installed above the test bench (2).

2. The multi-function transmission testing apparatus of claim 1, wherein: the structure of the test bench (2) is as follows: the device comprises a bottom plate (201), wherein a group of first guide rails (202) are arranged on the bottom plate (201), and a first mounting plate (203) sliding along the first guide rails (202) is mounted on the first guide rails (202);

the two sides of the upper surface of the first mounting plate (203) are symmetrically provided with mounting frames (204), the inner side of each mounting frame (204) at each side is provided with a plurality of rollers (205) in transmission connection along the length direction, and the rollers (205) at the two sides are in synchronous transmission; a lifting frame assembly is arranged on a first mounting plate (203) between the mounting frames (204) at the two sides;

the structure of the lifting frame assembly comprises a driving air cylinder (208) fixed in the middle of a first mounting plate (203), the top of a piston rod of the driving air cylinder is connected with a lifting plate (207) arranged parallel to the first mounting plate (203), vertical guide sleeves (218) are arranged on the first mounting plate (203) on the periphery of the driving air cylinder (208), and the lifting plate (207) moves up and down along the vertical guide sleeves (218) through guide pillars arranged at four corners of the bottom surface of the lifting plate.

3. The multi-function transmission testing apparatus of claim 2, wherein: a blocking cylinder (209) for stopping a conveying tray bearing the gearbox is arranged at one end of the first mounting plate (203), and an RFID sensor (210) for reading and writing data of a tested piece is arranged beside the first mounting plate; the other end of the first mounting plate (203) is provided with a pushing cylinder (212), an output rod of the pushing cylinder is connected with a cross rod (214), two sides of the cross rod (214) are respectively connected with a pushing block (213) through a longitudinal rod, the two pushing blocks (213) respectively slide along a section of second guide rail (215), and the two second guide rails (215) are symmetrically arranged on two sides of the upper surface of the first mounting plate (203) and are perpendicular to the arrangement direction of the first guide rail (202); limiting plates (217) are arranged on two sides of the middle of the bottom surface of the lifting plate (207), and limiting blocks (216) matched with the limiting plates (217) are arranged on the first mounting plate (203).

4. The multi-function transmission testing apparatus of claim 2, wherein: wherein mounting bracket (204) below of one side running roller (205) is equipped with by motor drive, with running roller (205) transmission connection's drive wheel (211), one end is equipped with between two mounting brackets (204) driving roller (206) of connecting a set of running roller (205) of both sides, running roller (205) of both sides pass through driving roller (206) synchronous transmission.

5. The multi-function transmission testing apparatus of claim 1, wherein: the structure of the wallboard positioning mechanism (6) comprises a positioning frame, wherein the positioning frame is of a U-shaped structure and comprises a front end plate (604) and side wall plates (601) vertically arranged on two sides of the front end plate (604);

a front mounting plate (603) is arranged on the outer surface of the front end plate (604), a raised positioning plate (607) extends outwards from the middle of the front mounting plate (603), and two first mounting through holes (602) are formed in the positioning plate (607) and are respectively used for the output ends of the first load mechanism (8) and the main drive mechanism (7) to pass through; a hydraulic input source (605) and three first pressure plate assemblies (606) which are respectively connected with the hydraulic input source (605) are distributed at four corners of a front mounting plate (603) on the outer ring of a positioning plate (607), and a tested gearbox is pressed tightly through the first pressure plate assemblies (606).

6. The multi-function transmission testing apparatus of claim 5, wherein: an air gap sensor (610) is arranged on a front end plate (604) beside the front mounting plate (603), and a hydraulic butt plate (609) and a circuit butt plate (608) are arranged on the lower side of the front end plate (604).

7. The multi-function transmission testing apparatus of claim 5, wherein: the structure of the first pressure plate assembly (606) comprises a pressure plate (6065), one end of the pressure plate (6065) is hinged to the head of a hydraulic telescopic rod (6061) through a first pin shaft (6062), the middle of the pressure plate (6065) is hinged to one ends of two movable pins (6064) through a second pin shaft (6063), and the other ends of the two movable pins (6064) are connected to two ends of a rotating shaft (6066);

the hydraulic telescopic rod (6061) is driven by a hydraulic input source (605), and the rotating shaft (6066) is driven by a rotating cylinder to rotate; the other end of the pressure plate (6065) is provided with a wedge-shaped inclined surface.

8. The multi-function transmission testing apparatus of claim 7, wherein: the auxiliary holding mechanism (4) and the wallboard positioning mechanism (6) are in the same form, and a second mounting through hole (402) corresponding to the first mounting through hole (602) in function is formed in the auxiliary holding mechanism, so that the output end of the second loading mechanism (3) can penetrate through the second mounting through hole; the auxiliary clasping mechanism (4) is also provided with three second pressure plate assemblies (406) which have functions corresponding to the first pressure plate assembly (606), and the three second pressure plate assemblies (406) are distributed at three vertexes of a triangle;

the auxiliary clasping mechanism (4) moves towards the direction close to or far away from the wallboard positioning mechanism (6) along a group of third guide rails (9) arranged on the base component (1).

9. The multi-function transmission testing apparatus of claim 1, wherein: the second loading mechanism (3) has the structure that: the wallboard positioning mechanism comprises a second mounting plate (304), wherein the second mounting plate (304) moves towards or away from the wallboard positioning mechanism (6) along a group of fourth guide rails (10) arranged on a base assembly (1); a second differential (301) is fixedly arranged on the second mounting plate (304), and the output end of the second differential is connected with a second output shaft (305) penetrating through the auxiliary holding mechanism (4) through a coupler (12) and a bearing device (11).

10. The multi-function transmission testing apparatus of claim 1, wherein: the structure of the main driving mechanism (7) comprises a main driving motor (701), and an output end coupler (12) and a bearing device (11) of the main driving motor are connected with a main output shaft (702) penetrating through the wall plate positioning mechanism (6);

the first loading mechanism (8) structurally comprises a third mounting plate (802), and the third mounting plate (802) moves towards or away from the auxiliary clasping mechanism (4) along a group of fifth guide rails (13) arranged on the base assembly (1); the third mounting plate (802) is provided with a first differential (801) and a transmission shaft (803), two ends of the third mounting plate are respectively connected with the output end of the first differential (801) and a first output shaft (804) penetrating through the wall plate positioning mechanism (6) through universal joints (805), and a bearing device (11) is arranged between the universal joints (805) and the first output shaft (804).

11. The multi-function transmission testing apparatus of claim 1, wherein: the structure of the vibration data acquisition mechanism (5) is as follows: the device comprises a mounting frame (501), wherein action cylinders (502) are mounted on two sides of the mounting frame (501) through mounting brackets (505), a vibration sensor (503) is arranged at the end part of a piston rod of each action cylinder (502), and a position sensor (504) is further arranged on the mounting bracket (505) beside the action cylinders (502).

12. The multi-function transmission testing apparatus of claim 1, wherein: an installation housing (14) containing sound-absorbing materials is arranged outside the testing device, and an electrical cabinet (16) and a gearbox oil heat exchange filtering system (15) of a tested gearbox are arranged on the installation housing (14); the bottom of the base component (1) is provided with a damping anchor (17).