Heavy electric drive axle full-automatic lubrication test bench supporting simulation of multiple working conditions

Abstract

The utility model discloses a heavy electric drive axle full-automatic lubrication test bench supporting simulation of multiple working conditions, which comprises a lifting driving module, a rotation driving module, a support base, a lower cross beam arranged at the top of the support base, a rotation platform arranged on the lower cross beam and an upper cross beam arranged on the rotation platform, an axle bearing piece is mounted at the top of the upper cross beam; the lower cross beam is horizontally arranged and hinged to the supporting base, and the upper cross beam is parallel to the lower cross beam; the lifting driving module is arranged below the lower cross beam, the upper end of the lifting driving module is connected with the lower cross beam, and the rotating driving module is arranged below the lower cross beam and connected with the bottom of the rotating platform; the lifting driving module drives the lower cross beam to swing left and right; the rotary driving module drives the rotary platform to rotate; the heavy truck electric drive axle lubrication test bench is specially used for heavy truck electric drive axle lubrication tests, can fully automatically simulate pitching, left and right roll and composite working conditions, and effectively simulates vehicle uphill and downhill, turning and other complex driving conditions.

Description

Technical Field

[0001] This utility model relates to the field of truck drive axles, and in particular to a fully automatic lubrication test bench for heavy-duty electric drive axles that supports simulation of multiple working conditions. Background Technology

[0002] With increasing global emphasis on environmental protection and energy efficiency, electric trucks and driverless truck technologies are gradually becoming important development trends in the logistics and transportation sector. As pioneers of this transformation, the performance and reliability of the core power unit of electric heavy-duty trucks—the electric drive axle—directly affect the overall vehicle's operating efficiency and safety. To ensure that electric heavy-duty trucks perform well in practical applications, rigorous testing and verification of the electric drive axle are crucial. Bench testing, as an efficient and controllable testing method, plays a vital role in the research and verification process of electric drive axles.

[0003] Among the many bench tests conducted on electric drive bridges, the lubrication bench test is particularly crucial. This test aims to comprehensively evaluate key indicators of the electric drive bridge, such as dynamic sealing performance, temperature rise performance, stability under high-temperature environments, and fatigue life. These performance indicators not only relate to the operating efficiency of the electric drive bridge but also directly affect its service life and safety. Therefore, through the lubrication bench test, potential design defects can be identified and resolved in a timely manner, providing data support for the optimized design of the electric drive bridge.

[0004] However, accurately simulating the various working conditions of the electric drive axle in actual road driving places extremely high demands on the design of the test bench. In particular, when simulating complex road conditions such as going uphill and downhill and turning, the axle will produce dynamic changes such as pitching forward and backward and tilting left and right. These changes pose a severe challenge to the lubrication system of the electric drive axle. Therefore, designing a test bench system that can realistically reflect these working conditions has become the key to achieving efficient lubrication testing.

[0005] However, most of the axle bench verification test equipment currently on the market is designed for traditional mechanical axles and has not fully considered the special characteristics of electric drive axles, especially the needs of lubrication testing. Traditional benches often lack the ability to accurately simulate the dynamic working conditions of electric drive axles and cannot effectively evaluate the lubrication performance of electric drive axles under complex working conditions, thus limiting their application value in the research and development of electric heavy trucks.

[0006] In summary, existing axle test bench equipment is significantly inadequate for adapting to lubrication testing of electric drive axles. To meet the demand of the electric heavy-duty truck industry for high-performance electric drive axles, it is particularly urgent to develop an advanced test bench system that can simulate real road conditions and focus on verifying the lubrication performance of electric drive axles. Utility Model Content

[0007] The main objective of this invention is to provide a fully automatic lubrication test bench for heavy-duty electric drive axles that supports simulation of multiple working conditions, thereby solving all or one of the aforementioned problems in the prior art.

[0008] To solve the above-mentioned technical problems, one technical solution adopted by this utility model is: to provide a fully automatic lubrication test bench for heavy-duty electric drive vehicle axles that supports simulation of multiple working conditions, comprising:

[0009] The vehicle includes a lifting drive module, a rotating drive module, a support base, a lower crossbeam movably mounted on the top of the support base, a rotating platform movably mounted on the lower crossbeam, and an upper crossbeam mounted on the rotating platform. Axle support components are installed on both sides of the top of the upper crossbeam.

[0010] The lower crossbeam is horizontally arranged, and both ends of the lower crossbeam are respectively hinged to the support base. The upper crossbeam is arranged parallel to the lower crossbeam.

[0011] The lifting drive module is located below the lower crossbeam, and the upper end of the lifting drive module is connected to one side of the lower crossbeam. The lifting drive module is used to drive the lower crossbeam to swing left and right around the support base as the central axis.

[0012] The rotation drive module is located below the lower crossbeam and corresponds to the position of the rotating platform. The upper end of the rotation drive module passes through the lower crossbeam and connects to the bottom of the rotating platform. The rotation drive module is used to drive the rotating platform to perform rotation.

[0013] As an improved solution, the support base includes: a pair of uprights;

[0014] The two columns are symmetrical to each other and are both vertically arranged. There is a distance between the two columns, and a female hinge is installed on the top of each column.

[0015] As an improved solution, the lower crossbeam includes: a first crossbeam;

[0016] The first crossbeam is horizontally positioned above the two columns, with both ends of the first crossbeam resting on the tops of the two columns respectively;

[0017] The lower surface of the first crossbeam is provided with sub-hinges at positions corresponding to the female hinge, and the sub-hinges correspond one-to-one with the female hinges, and the sub-hinges and the female hinges are hinged to each other;

[0018] The lifting drive module is located below the first crossbeam and on one side of the first crossbeam.

[0019] A horizontally arranged second connector is connected to the first crossbeam. The second connector is configured to correspond to the lifting drive module, and the lower surface of the second connector is connected to the upper end of the lifting drive module.

[0020] As an improved solution, the lower crossbeam further includes: a second crossbeam;

[0021] The second connector is the second crossbeam, which is arranged perpendicular to the first crossbeam in the horizontal direction;

[0022] The second crossbeam is located at the center of the first crossbeam. The second crossbeam and the first crossbeam are integrally formed. The second crossbeam is flush with the first crossbeam and the second crossbeam and the first crossbeam form a cross shape.

[0023] As an improved solution, a vertically arranged connecting plate is connected to the bottom of one end of the second crossbeam, and the upper end of the lifting drive module is connected to one side of the connecting plate.

[0024] As an improved solution, the rotary platform includes: a bearing and a support flange;

[0025] A through hole is provided at the center of the lower crossbeam, and the bearing seat is horizontally installed on the upper surface of the lower crossbeam corresponding to the through hole;

[0026] The support flange is horizontally and rotatably mounted inside the bearing seat, and the upper surface of the support flange is higher than the bearing seat. The support flange and the bearing seat are coaxially arranged.

[0027] As an improved solution, the upper crossbeam is arranged parallel to the second crossbeam on the supporting flange;

[0028] The center of the upper crossbeam, the center of the rotating platform, the center of the lower crossbeam, and the through hole are all provided correspondingly to each other;

[0029] The two axle support members are respectively disposed on the upper surfaces of both ends of the upper crossbeam.

[0030] As an improved solution, each of the aforementioned axle support components includes: a vertical portion and a horizontal portion;

[0031] The vertical part is vertically disposed on the upper surface of the upper crossbeam, the horizontal part is horizontally disposed on the upper surface of the vertical part, and the top of the horizontal part is provided with an alignment and mounting groove matching the axle structure.

[0032] As an improved solution, the rotary drive module includes: a first telescopic driver and a vertical axis;

[0033] The vertical shaft is vertically positioned below the lower crossbeam and corresponding to the position of the through hole. The top end of the vertical shaft is connected to the bottom of the support flange via a universal joint that passes through the through hole. The bottom end of the vertical shaft is connected to a horizontally positioned rotating base, which is positioned higher than the bottom end of the column.

[0034] The first telescopic driver is parallel to the upper crossbeam and horizontally disposed on one side of the rotating base, and the telescopic end of the first telescopic driver is connected to one side of the rotating base; the vertical axis is disposed at the center of the rotating base, and the first telescopic driver is used to drive the rotating base to rotate around the vertical axis as the central axis.

[0035] As an improved solution, the lifting drive module includes: a second telescopic drive and a support frame;

[0036] The support frame is positioned on one side below the second crossbeam, and the second telescopic driver is vertically installed on the support frame and positioned corresponding to the connecting plate. The telescopic end of the second telescopic driver is connected to one side of the connecting plate.

[0037] The beneficial effects of this utility model are:

[0038] This invention serves as a dedicated lubrication test bench for heavy-duty truck electric drive axles. It can automatically simulate pitch, lateral tilt, and combined operating conditions, supporting 360-degree rotation and multi-angle locking of the electric drive axle, effectively simulating complex driving conditions such as uphill and downhill driving and turning. By accurately simulating actual operating conditions, this test bench shortens the development cycle of electric drive axles, reduces costs, and improves product quality and reliability. Furthermore, it can reproduce faults such as overheating and poor lubrication during road tests, helping designers and developers pinpoint problems. This invention comprehensively utilizes a screw jack and a rotating platform structure to achieve multiple motion functions such as rotation and tilting of the bench, ensuring the smooth completion of lubrication tests for the electric drive axle under various simulated operating conditions. It overcomes the shortcomings of existing technologies and has high application value. Attached Figure Description

[0039] Figure 1 This is a three-dimensional structural schematic diagram of a fully automatic lubrication test bench for heavy-duty electric drive vehicle axles that supports simulation of multiple working conditions, according to an embodiment of this utility model.

[0040] Figure 2 This is a three-dimensional structural diagram of a fully automatic lubrication test bench for heavy-duty electric drive axles that supports simulation of multiple working conditions, as shown in another perspective in this utility model embodiment.

[0041] Figure 3 This is a three-dimensional structural diagram of a fully automatic lubrication test bench for heavy-duty electric drive axles that supports simulation of multiple working conditions, as shown in another perspective in this utility model embodiment.

[0042] Figure 4 This is a top view of a fully automatic lubrication test bench for heavy-duty electric drive axles that supports simulation of multiple working conditions, as described in this utility model embodiment.

[0043] Figure 5 This is a side view of a fully automatic lubrication test bench for heavy-duty electric drive axles that supports simulation of multiple working conditions, as described in this utility model embodiment.

[0044] Figure 6 This is a side view of the structure of a fully automatic lubrication test bench for heavy-duty electric drive axles that supports simulation of multiple working conditions, as described in this utility model embodiment, from another perspective.

[0045] The components in the attached diagram are labeled as follows:

[0046] 1. Column; 2. Rotating platform; 3. Upper crossbeam; 4. Female hinge; 5. First crossbeam; 6. Sub-hinge; 7. Second crossbeam; 8. Connecting plate; 9. Shaft seat; 10. Support flange; 11. Vertical part; 12. Horizontal part; 13. Alignment mounting slot; 14. First telescopic actuator; 15. Vertical shaft; 16. Rotating base; 17. Second telescopic actuator; 18. Support frame; 19. Arc-shaped connecting plate; 20. Bolt holes; 21. Positioning stud. Detailed Implementation

[0047] The preferred embodiments of the present invention will now be described in detail with reference to the accompanying drawings, so that the advantages and features of the present invention can be more easily understood by those skilled in the art, thereby making a clearer and more definite definition of the scope of protection of the present invention.

[0048] In the description of this utility model, it should be understood that the terms "center", "longitudinal", "transverse", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", "axial", "radial", "circumferential", etc., indicating the orientation or positional relationship are based on the orientation or positional relationship shown in the accompanying drawings, and are only for the convenience of describing this utility model and simplifying the description, and are not intended to indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of this utility model.

[0049] Furthermore, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of indicated technical features. Thus, a feature defined as "first" or "second" may explicitly or implicitly include at least one of that feature. In the description of this utility model, "a plurality of" means at least two, such as two, three, etc., unless otherwise explicitly specified.

[0050] In this utility model, unless otherwise explicitly specified and limited, the terms "installation," "connection," "joining," and "fixing," etc., should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral part; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; they can refer to the internal communication of two components or the interaction between two components, unless otherwise explicitly limited. Those skilled in the art can understand the specific meaning of the above terms in this utility model according to the specific circumstances.

[0051] In this utility model, unless otherwise explicitly specified and limited, "above" or "below" the second feature can mean that the first feature is in direct contact with the second feature, or that the first feature is in indirect contact with the second feature through an intermediate medium. Furthermore, "above," "on top of," and "over" the second feature can mean that the first feature is directly above or diagonally above the second feature, or simply that the first feature is at a higher horizontal level than the second feature. "Below," "below," and "under" the second feature can mean that the first feature is directly below or diagonally below the second feature, or simply that the first feature is at a lower horizontal level than the second feature.

[0052] It should be noted that when an element is referred to as being "fixed to" or "set on" another element, it can be directly on the other element or there may be an intervening element. When an element is considered to be "connected to" another element, it can be directly connected to the other element or there may be an intervening element. The terms "vertical," "horizontal," "upper," "lower," "left," "right," and similar expressions used herein are for illustrative purposes only and do not represent the only embodiments.

[0053] Please see Figures 1-6 The embodiments of this utility model include:

[0054] A fully automated lubrication test bench for heavy-duty electric drive vehicle axles that supports simulation of multiple operating conditions includes:

[0055] The system includes a lifting drive module, a rotating drive module, a support base, a lower crossbeam movably mounted on the top of the support base, a rotating platform 2 movably mounted on the lower crossbeam, and an upper crossbeam 3 mounted on the rotating platform 2. Axle support components are mounted on both sides of the top of the upper crossbeam 3. Each axle support component includes a vertical part 11 and a horizontal part 12. The vertical part 11 is vertically mounted on the upper surface of the upper crossbeam 3, and the horizontal part 12 is horizontally mounted on the upper surface of the vertical part 11. The top of the horizontal part 12 has a matching mounting groove 13 that matches the axle structure. The two axle support components can stably support the heavy-duty electric drive axle to be tested.

[0056] The lower crossbeam is horizontally positioned, with both ends hinged to the support base. The upper crossbeam 3 is parallel to the lower crossbeam. The lifting drive module is positioned below the lower crossbeam, with its upper end connected to one side of the lower crossbeam. The lifting drive module drives the lower crossbeam to swing left and right around the support base, thereby causing the upper crossbeam 3 to tilt left and right, simulating a tilting condition for the heavy-duty electric drive axle placed on the two axle supports. The rotation drive module is positioned below the lower crossbeam and corresponds to the position of the rotating platform 2. Its upper end passes through the lower crossbeam and connects to the bottom of the rotating platform 2. The rotation drive module drives the rotating platform 2 to rotate, thereby achieving a 360-degree rotation of the upper crossbeam 3. After the upper crossbeam 3 rotates 180 degrees, the lifting drive module drives the lower crossbeam to swing left and right, simulating the forward and backward tilting condition of the axle. In this embodiment, the tilt angle is determined according to specific requirements and the stroke of the lifting drive module.

[0057] In one embodiment, the support base includes: a pair of columns 1; the two columns 1 are symmetrical to each other and are both vertically arranged, a distance is provided between the two columns 1, and a female hinge 4 is installed on the top of each of the two columns 1; the two columns 1 can provide stable support for the device.

[0058] In one embodiment, the lower crossbeam includes: a first crossbeam 5 and a second crossbeam 7; the first crossbeam 5 is horizontally positioned above the two columns 1, with both ends of the first crossbeam 5 resting on the tops of the two columns 1 respectively; the lower surface of the first crossbeam 5 is provided with sub-hinges 6 at positions corresponding to the female hinge 4, the sub-hinges 6 corresponding one-to-one with the female hinge 4, and the sub-hinges 6 and the female hinge 4 are hinged to each other, with the sub-hinges 6 inserted into the grooves of the female hinge 4; the lifting drive module is positioned below the first crossbeam 5 and located on one side of the first crossbeam 5; the second crossbeam 7 is positioned corresponding to the lifting drive module, and the lower surface of the second crossbeam 7 is aligned with the female hinge 4. The upper end of the lifting drive module is connected to the second crossbeam 7, which is perpendicular to the first crossbeam 5 in the horizontal direction. The second crossbeam 7 is located at the center of the first crossbeam 5. In a preferred embodiment, the second crossbeam 7 and the first crossbeam 5 are integrally formed, with the upper surface of the second crossbeam 7 flush with the upper surface of the first crossbeam 5, and the second crossbeam 7 and the first crossbeam 5 forming a "cross" shape. A vertically arranged connecting plate 8 is connected to the bottom of one end of the second crossbeam 7, and the upper end of the lifting drive module is connected to one side of the connecting plate 8. In order to maintain better stability and support, an arc-shaped connecting plate 19 connecting the two is also provided at the corner between the first crossbeam 5 and the second crossbeam 7.

[0059] In one embodiment, the rotating platform 2 includes: a bearing seat 9 and a support flange 10; a through hole is provided at the center of the lower crossbeam, the bearing seat 9 has a hollowed-out design at its center, and the bearing seat 9 is horizontally installed on the upper surface of the lower crossbeam corresponding to the through hole; the support flange 10 is horizontally and rotatably installed in the bearing seat 9, and the upper surface of the support flange 10 is higher than the bearing seat 9, and the support flange 10 is coaxially arranged with the bearing seat 9; in practical applications, the bearing seat 9 can also be a fixed flange with a hollowed-out center and a bearing at its center, and the support flange 10 is rotatably connected to the fixed flange through its bearing; the upper crossbeam 3 is arranged parallel to the second crossbeam 7 on the support flange 10; the center of the upper crossbeam 3, the center of the rotating platform 2, The center of the lower crossbeam and the through hole are respectively provided at each other; the two axle support members are respectively provided on the upper surfaces of both ends of the upper crossbeam 3; in addition, in order to provide a more stable locking function, bolt holes 20 are provided on both sides of the end of the upper crossbeam 3, and positioning studs 21 are provided on the first crossbeam 5 and the second crossbeam 7 of the lower crossbeam at the positions corresponding to the bolt holes 20. The top of the positioning studs 21 is set lower than the bolt holes 20. When the upper crossbeam 3 rotates to a certain position, the corresponding bolt holes 20 and positioning studs 21 are fixed by fixing screws to improve the fixing effect; it should be noted that during the use or operation of this device, the bolt holes 20 and positioning studs 21 are separated and not fixed to prevent movement interference. The figure is only for fixing illustration and does not represent the movement state of this device.

[0060] In one embodiment, the rotary drive module includes: a first telescopic actuator 14 and a vertical shaft 15; to avoid interfering with the rotation of the upper crossbeam 3, the vertical shaft 15 is vertically positioned below the lower crossbeam and corresponding to the position of the through hole. The top end of the vertical shaft 15 is connected to the bottom of the support flange 10 via a universal joint passing through the through hole. The bottom end of the vertical shaft 15 is connected to a horizontally positioned rotating base 16, which is positioned higher than the lower end of the column 1. The universal joint has a structure similar to a sub-hinged member 6, and the through hole is sized to accommodate the universal joint. The bottom of the universal joint extends to the same or similar height as the bottom of the sub-hinged member 6. The first telescopic actuator 14... 4. Parallel to the upper crossbeam 3 and horizontally arranged on one side of the rotating base 16, the telescopic end of the first telescopic driver 14 is connected to one side of the rotating base 16; the vertical shaft 15 is located at the center of the rotating base 16, and the first telescopic driver 14 is used to drive the rotating base 16 to rotate around the vertical shaft 15 as the central axis; when the first telescopic driver 14 is working, it drives the rotating base 16 to rotate, which in turn drives the vertical shaft 15 to rotate, and then the vertical shaft 15 drives the support flange 10 to rotate, and finally drives the upper crossbeam 3 to rotate; during rotation, the first telescopic driver 14 has a self-locking function, and when it stops moving, it locks the rotation position of the upper crossbeam 3.

[0061] In one embodiment, the lifting drive module includes: a second telescopic actuator 17 and a support frame 18; the support frame 18 is positioned on one side below the second crossbeam 7, the second telescopic actuator 17 is vertically mounted on the support frame 18 and positioned corresponding to the connecting plate 8, and the telescopic end of the second telescopic actuator 17 is connected to one side of the connecting plate 8; the structure of the second telescopic actuator 17 is the same as that of the first telescopic actuator, and the second telescopic actuator 17 also has a self-locking function, which limits the swing angle of the lower crossbeam.

[0062] The above description is merely an embodiment of this utility model and does not limit the patent scope of this utility model. Any equivalent structure made using the contents of this utility model specification and drawings, or directly or indirectly applied to other related technical fields, are similarly included within the patent protection scope of this utility model.

Claims

1. A fully automatic lubrication test bench for heavy-duty electric drive vehicle axles that supports simulation of multiple working conditions, characterized in that, include: The lifting drive module, the rotating drive module, the support base, the lower crossbeam movably disposed on the top of the support base, the rotating platform (2) movably mounted on the lower crossbeam, and the upper crossbeam (3) mounted on the rotating platform (2), with axle support components installed on both sides of the top of the upper crossbeam (3). The lower crossbeam is horizontally arranged, and both ends of the lower crossbeam are respectively hinged to the support base. The upper crossbeam (3) is arranged parallel to the lower crossbeam. The lifting drive module is located below the lower crossbeam, and the upper end of the lifting drive module is connected to one side of the lower crossbeam. The lifting drive module is used to drive the lower crossbeam to swing left and right around the support base as the central axis. The rotation drive module is located below the lower crossbeam and at the position corresponding to the rotation platform (2). The upper end of the rotation drive module passes through the lower crossbeam and is connected to the bottom of the rotation platform (2). The rotation drive module is used to drive the rotation platform (2) to perform rotation.

2. The fully automatic lubrication test bench for heavy-duty electric drive vehicle axles supporting simulated multi-condition operation as described in claim 1, characterized in that: The support base includes: a pair of columns (1); The two columns (1) are symmetrical to each other and are both vertically arranged. There is a distance between the two columns (1), and the top of each column (1) is equipped with a female hinge (4).

3. The fully automatic lubrication test bench for heavy-duty electric drive vehicle axles supporting simulated multi-condition operation as described in claim 2, characterized in that: The lower crossbeam includes: a first crossbeam (5); The first crossbeam (5) is horizontally positioned above the two columns (1), and both ends of the first crossbeam (5) are respectively placed on the top of the two columns (1); The lower surface of the first crossbeam (5) is provided with a sub-hinged member (6) at the position corresponding to the mother hinge member (4). The sub-hinged members (6) correspond one-to-one with the mother hinge member (4), and the sub-hinged members (6) and the mother hinge member (4) are hinged to each other. The lifting drive module is located below the first crossbeam (5) and on one side of the first crossbeam (5); A second connecting member is horizontally connected to the first crossbeam (5). The second connecting member is configured to correspond to the lifting drive module, and the lower surface of the second connecting member is connected to the upper end of the lifting drive module.

4. The fully automatic lubrication test bench for heavy-duty electric drive axles supporting simulated multi-condition operation as described in claim 3, characterized in that: The lower crossbeam also includes: a second crossbeam (7); The second connecting member is the second crossbeam (7), which is set perpendicular to the first crossbeam (5) in the horizontal direction; The second crossbeam (7) is located at the center of the first crossbeam (5). The second crossbeam (7) and the first crossbeam (5) are integrally formed. The second crossbeam (7) is flush with the first crossbeam (5). The second crossbeam (7) and the first crossbeam (5) are in a cross shape.

5. The fully automatic lubrication test bench for heavy-duty electric drive vehicle axles supporting simulated multi-condition operation as described in claim 4, characterized in that: The bottom of one end of the second crossbeam (7) is connected to a vertically arranged connecting plate (8), and the upper end of the lifting drive module is connected to one side of the connecting plate (8).

6. The fully automatic lubrication test bench for heavy-duty electric drive vehicle axles supporting simulated multi-condition operation as described in claim 5, characterized in that: The rotating platform (2) includes: a bearing (9) and a support flange (10); A through hole is provided at the center of the lower crossbeam, and the bearing seat (9) is horizontally installed on the upper surface of the lower crossbeam corresponding to the through hole; The support flange (10) is horizontally and rotatably installed in the bearing seat (9), and the upper surface of the support flange (10) is set higher than the bearing seat (9). The support flange (10) and the bearing seat (9) are coaxially arranged.

7. The fully automatic lubrication test bench for heavy-duty electric drive vehicle axles supporting simulated multi-working-condition testing as described in claim 6, characterized in that: The upper crossbeam (3) is arranged parallel to the second crossbeam (7) on the supporting flange (10); The center of the upper crossbeam (3), the center of the rotating platform (2), the center of the lower crossbeam, and the through hole are all provided correspondingly to each other; The two axle support members are respectively disposed on the upper surfaces of the two ends of the upper crossbeam (3).

8. The fully automatic lubrication test bench for heavy-duty electric drive axles supporting simulated multi-condition operation as described in claim 7, characterized in that: Each of the aforementioned axle support components includes: a vertical portion (11) and a horizontal portion (12). The vertical part (11) is vertically disposed on the upper surface of the upper crossbeam (3), the horizontal part (12) is horizontally disposed on the upper surface of the vertical part (11), and the top of the horizontal part (12) is provided with a matching mounting groove (13) for the axle structure.

9. The fully automatic lubrication test bench for heavy-duty electric drive axles supporting simulated multi-condition operation as described in claim 6, characterized in that: The rotary drive module includes: a first telescopic driver (14) and a vertical axis (15). The vertical shaft (15) is vertically arranged below the lower crossbeam and corresponds to the position of the through hole. The top end of the vertical shaft (15) is connected to the bottom of the support flange (10) through a universal joint that passes through the through hole. The bottom end of the vertical shaft (15) is connected to a horizontally arranged rotating base (16). The rotating base (16) is arranged higher than the lower end of the column (1). The first telescopic driver (14) is parallel to the upper crossbeam (3) and horizontally disposed on one side of the rotating base (16). The telescopic end of the first telescopic driver (14) is connected to one side of the rotating base (16). The vertical shaft (15) is disposed at the center of the rotating base (16). The first telescopic driver (14) is used to drive the rotating base (16) to rotate around the vertical shaft (15) as the central axis.

10. The fully automatic lubrication test bench for heavy-duty electric drive axles supporting simulated multi-condition operation as described in claim 6, characterized in that: The lifting drive module includes: a second telescopic driver (17) and a support frame (18). The support frame (18) is positioned on one side below the second crossbeam (7). The second telescopic driver (17) is vertically installed on the support frame (18) and is positioned corresponding to the connecting plate (8). The telescopic end of the second telescopic driver (17) is connected to one side of the connecting plate (8).

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