Dragging test device for electric wheels

Abstract

The utility model relates to the technical field of electric wheel tests, in particular to a twin-dragging test device for electric wheels. The twin-drag test device for the electric wheels comprises a first support assembly, a second support assembly and a connecting assembly, wherein the first support assembly is used for mounting a first electric wheel; the second support assembly is arranged opposite to the first support assembly and used for installing a second electric wheel. After the second electric wheel is installed on the second support assembly, the second electric wheel and the first electric wheel are coaxially arranged in a back-to-back mode. After the first electric wheel is installed on the first support assembly and the second electric wheel is installed on the second support assembly, the connecting assembly is used for connecting the first electric wheel and the second electric wheel. According to the utility model, the first electric wheel drives the second electric wheel to operate so as to simulate the working state of the electric wheel under the actual working condition load, so that a worker can conveniently carry out effective test verification and improvement on the electric wheel according to the problems of the first electric wheel and the second electric wheel in the test operation process.

Description

Technical Field

[0001] The utility model relates to the technical field of electric wheel testing, in particular to a towing test device for electric wheels. Background Art

[0002] At present, electric wheel dump trucks have played a huge role in major mines due to their superior transportation performance as a means of transport for large-tonnage mining dump trucks. Therefore, the demand for core components of electric wheel vehicles is increasing and urgent, so the actual working condition verification of core components has received widespread attention. However, existing electric wheel manufacturers lack the conditions for actual working condition verification of electric wheels, resulting in common problems such as long troubleshooting cycle, difficult maintenance, and failure to find the root cause when electric wheels fail in the market.

[0003] Therefore, a test device that can verify the electric wheel according to actual working conditions needs to be studied urgently. Utility Model Content

[0004] The utility model aims to solve at least one of the technical problems existing in the prior art or related technology.

[0005] To this end, the utility model provides a towing test device for electric wheels, which can drive the second electric wheel to operate through the first electric wheel to simulate the working state of the electric wheels under actual working conditions and loads, thereby facilitating the staff to effectively test and verify and improve the electric wheels according to problems that arise between the first electric wheel and the second electric wheel during the test operation.

[0006] According to the utility model, a towing test device for electric wheels is provided, comprising:

[0007] A first bracket assembly, used for mounting a first electric wheel;

[0008] A second bracket assembly is arranged opposite to the first bracket assembly and is used to mount the second electric wheel; after the second electric wheel is mounted on the second bracket assembly, the second electric wheel and the first electric wheel are coaxial and arranged opposite to each other;

[0009] The connecting component is used to connect the first electric wheel and the second electric wheel after the first electric wheel is installed on the first bracket assembly and the second electric wheel is installed on the second bracket assembly.

[0010] Optionally, the first bracket assembly includes a first bracket member and a first mounting plate; the first bracket member is used to support the first mounting plate; the first mounting plate is provided with a first through hole; after the input end of the first electric wheel passes through the first through hole, the first electric wheel is connected to the first mounting plate.

[0011] Optionally, the first bracket member includes:

[0012] A first connecting plate, used for connecting to the test bench;

[0013] First side plates, two first side plates are arranged opposite to each other on the first connecting plate;

[0014] The first mounting plate is vertically arranged on the first connecting plate, and two oppositely arranged sides of the first mounting plate are respectively connected to a first side plate.

[0015] Optionally, a first groove is formed on both first side panels, the first groove is vertically arranged relative to the first connecting plate, and the first groove is used to cooperate with and plug into a side portion of the first mounting plate to fix the first mounting plate between the two first side panels.

[0016] Optionally, the second bracket assembly includes a second bracket member and a second mounting plate; the second bracket member is used to support the second mounting plate; the second mounting plate is provided with a second through hole, and the axes of the second through hole and the first through hole are located on the same straight line; after the output end of the second electric wheel passes through the second through hole, the second electric wheel is connected to the second mounting plate.

[0017] Optionally, the second bracket member includes:

[0018] A second connecting plate, used for connecting to the test bench;

[0019] Second side plates, two second side plates are arranged oppositely on the second connecting plate;

[0020] The second mounting plate is vertically arranged on the second connecting plate, and two oppositely arranged sides of the second mounting plate are respectively connected to a second side plate.

[0021] Optionally, the second connecting plate can be connected to the test bench with adjustable position so that after the second electric wheel is connected to the second mounting, the distance between the input end of the second electric wheel and the output end of the first electric wheel is a preset distance.

[0022] Optionally, the connection component includes:

[0023] A first flange connected to an output end of the first electric wheel;

[0024] A second flange connected to an input end of the second electric wheel;

[0025] The pin shaft assembly comprises a plurality of pin shafts distributed along the circumference of the first flange, and the plurality of pin shafts are used to connect the first flange and the second flange so that the first flange and the second flange are coaxially arranged.

[0026] Optionally, the connection component further includes:

[0027] A pressure plate assembly is connected to both sides of the first flange and the second flange. The pressure plate assembly includes at least two pressure plates. The at least two pressure plates are arranged in sequence along the circumference of the first flange or the second flange, and the at least two pressure plates are against the pin shafts located at the corresponding positions of the first flange or the second flange.

[0028] Optionally, a controller is further included, which is electrically connected to the input end of the first electric wheel and is used to control at least one of the torque, power and rotation speed of the first electric wheel.

[0029] One of the above technical solutions has at least the following advantages or beneficial effects:

[0030] For a towing test device for electric wheels in an embodiment of the utility model, the first electric wheel is installed on the first bracket assembly, and the second electric wheel is installed on the second bracket assembly, so that the second electric wheel and the first electric wheel are coaxial and arranged back to back, and then the first electric wheel and the second electric wheel are connected by a connecting assembly to achieve a back-to-back connection between the first electric wheel and the second electric wheel, that is, the second electric wheel is driven by the first electric wheel to operate to simulate the working state of the electric wheel under actual working load, so as to facilitate the staff to conduct effective test verification and improvement of the electric wheels according to the problems encountered in the test operation of the first electric wheel and the second electric wheel, so as to greatly reduce the failure rate of the improved electric wheels in the market, which has a guiding significance for the improvement and application of the electric wheels. BRIEF DESCRIPTION OF THE DRAWINGS

[0031] Figure 1 A schematic structural diagram of a towing test device for electric wheels according to an embodiment of the utility model is shown;

[0032] Figure 2 A top view of a towing test device for electric wheels according to an embodiment of the utility model is shown.

[0033] [Description of Reference Numerals]

[0034] 1. First bracket assembly, 101. First bracket member, 102. First mounting plate, 1011. First connecting plate, 1012. First side plate, 1013. First groove;

[0035] 2. second bracket assembly, 201. second bracket member, 202. second mounting plate, 2011. second connecting plate, 2012. second side plate, 2013. first groove;

[0036] 3. Connecting assembly, 301, first flange, 302, second flange, 303, pin shaft, 304, pressing plate;

[0037] 4. first electric wheel, 401, first motor, 402, first annular member;

[0038] 5. second electric wheel, 501. second annular member, 502. second motor;

[0039] 6. Bolt assembly. DETAILED DESCRIPTION

[0040] In order to better explain the present invention and facilitate understanding, the present invention is described in detail below through specific implementation modes in conjunction with the accompanying drawings.

[0041] With the rapid development of industries such as coal and rock mining, the development of its transportation tools has also become increasingly updated and mature. In recent years, electric wheel dump trucks have played a huge role in major mines with their superior transportation performance, but due to the slow development of electric wheel vehicles in localization, technical indicators are difficult to meet the requirements, and my country's main electric wheel vehicles mainly rely on imports. Therefore, the high price of complete machines and spare parts, shortage of spare parts, and difficulty in maintenance are the key constraints for my country's mines to reduce transportation costs.

[0042] The demand for localization of key components of electric wheels is increasing and urgent, so the actual working condition verification of core components in the factory is an indispensable technical verification. However, existing domestic electric wheel manufacturers lack the conditions for actual working condition verification. When failures occur in the market, the solution cycle is long, spare parts are in short supply, maintenance is difficult, and the root cause cannot be found.

[0043] In order to solve at least one of the technical problems existing in the prior art or related technology, the utility model provides a towing test device for electric wheels, by installing a first electric wheel on a first bracket assembly, and installing a second electric wheel on a second bracket assembly, so that the second electric wheel and the first electric wheel are coaxial and arranged back to back, and then the first electric wheel and the second electric wheel are connected by a connecting assembly to achieve a back-to-back connection between the first electric wheel and the second electric wheel, that is, the second electric wheel is driven by the first electric wheel to operate to simulate the working state of the electric wheel under actual working load, so as to facilitate the staff to effectively test and verify and improve the electric wheels according to the problems encountered in the test operation of the first electric wheel and the second electric wheel, so as to greatly reduce the failure rate of the improved electric wheel in the market, which has a guiding significance for the improvement and application of the electric wheel.

[0044] The following describes a towing test device for electric wheels according to some embodiments of the present utility model with reference to the accompanying drawings.

[0045] See also Figure 1 and Figure 2An embodiment of the utility model provides a towing test device for electric wheels, the test device comprising a first bracket assembly 1, a second bracket assembly 2 and a connecting assembly 3, the first bracket assembly 1 is used to install a first electric wheel 4; the second bracket assembly 2 is arranged opposite to the first bracket assembly 1, and the second bracket assembly 2 is used to install a second electric wheel 5; after the second electric wheel 5 is installed on the second bracket assembly 2, the second electric wheel 5 and the first electric wheel 4 are coaxial and arranged opposite to each other; after the first electric wheel 4 is installed on the first bracket assembly 1 and the second electric wheel 5 is installed on the second bracket assembly 2, the connecting assembly 3 is used to connect the first electric wheel 4 and the second electric wheel 5.

[0046] It should be noted that the first bracket assembly 1 and the second bracket assembly 2 are both arranged on the test bench; after the first electric wheel 4 is installed on the first bracket assembly 1 and the second electric wheel 5 is installed on the second bracket assembly 2, the output end of the first electric wheel 4 is close to the input end of the second electric wheel 5, so that after the first electric wheel 4 and the second electric wheel 5 are connected through the connecting assembly 3, the preset parameters corresponding to the torque, power and speed are input to the input end of the first electric wheel 4, and transmitted to the input end of the second electric wheel 5 through the output end of the first electric wheel 4 and the connecting assembly 3, so as to drive the operation of the second electric wheel 5, and realize the simulation of the working state of the first electric wheel 4 and the second electric wheel 5 at the preset parameters corresponding to the torque, power and speed. Among them, inputting the preset parameters corresponding to the torque, power and speed to the input end of the first electric wheel 4 can be understood as inputting the preset parameters to the first motor 401 of the first electric wheel 4, and the first motor 401 of the first electric wheel 4, as a power source, transmits the preset parameters to the input end of the second electric wheel 5, and the preset parameters can be the load of the first electric wheel 4 under actual working conditions, and the load includes at least one of the torque, power and speed. Here, the second motor 502 is provided inside the second electric wheel 5, the first electric wheel 4 can be a main test electric wheel, and the second electric wheel 5 can be a companion test electric wheel.

[0047] In this embodiment, the first electric wheel 4 is installed on the first bracket assembly 1, and the second electric wheel 5 is installed on the second bracket assembly 2, so that the second electric wheel 5 and the first electric wheel 4 are coaxial and arranged back to back, and then the first electric wheel 4 and the second electric wheel 5 are connected by the connecting assembly 3 to achieve a back-to-back connection between the first electric wheel 4 and the second electric wheel 5, that is, the second electric wheel 5 is driven by the first electric wheel 4 to simulate the working state of the electric wheel under the actual working load, so as to facilitate the staff to conduct effective test verification and improvement of the electric wheel according to the problems (such as oil leakage) of the first electric wheel 4 and the second electric wheel 5 during the test operation, so as to greatly reduce the failure rate of the improved electric wheel in the market, which has a guiding significance for the improvement and application of the electric wheel.

[0048] In some possible embodiments, the first bracket assembly 1 includes a first bracket member 101 and a first mounting plate 102; the first bracket member 101 is used to support the first mounting plate 102; the first mounting plate 102 is provided with a first through hole; after the input end of the first electric wheel 4 passes through the first through hole, the first electric wheel 4 is connected to the first mounting plate 102.

[0049] It should be noted that the bottom of the first bracket member 101 is connected to the test bench; the radius of the first through hole is slightly larger than the radius of the first electric wheel 4 .

[0050] Here, a first annular member 402 is provided on the first electric wheel 4 and is coaxially arranged with the first electric wheel 4. A first connecting hole is opened on the first annular member 402. After the input end of the first electric wheel 4 passes through the first through hole, the first annular member 402 can be abutted against the first mounting plate 102, and then the first electric wheel 4 can be installed on the first mounting plate 102 by the cooperation of the bolt assembly 6 and the first connecting hole.

[0051] In this embodiment, by passing the input end of the first electric wheel 4 through the first through hole and then fixing the first electric wheel 4 on the first mounting plate 102, the first electric wheel 4 can be supported with the cooperation of the first mounting plate 102 and the first bracket member 101. The first bracket assembly 1 is not only simple in structure, but also convenient for the staff to install the first electric wheel 4 on the first bracket assembly 1.

[0052] In some possible embodiments, the first bracket member 101 includes a first connecting plate 1011 and a first side plate 1012, the first connecting plate 1011 is used to connect to the test bench; two first side plates 1012 are relatively arranged on the first connecting plate 1011; the first mounting plate 102 is vertically arranged on the first connecting plate 1011, and the opposite sides of the first mounting plate 102 are respectively connected to a first side plate 1012.

[0053] Here, the first connecting plate 1011 can be detachably connected to the test bench via the bolt assembly 6 .

[0054] It should be noted that the two first side panels 1012 are vertically arranged relative to the first connecting plate 1011, so that after the opposite sides of the first mounting plate 102 are respectively connected to a first side panel 1012, the first mounting plate 102 can be vertically arranged on the first connecting plate 1011.

[0055] Furthermore, a first groove 1013 is formed on each of the two first side panels 1012 . The first groove 1013 is vertically arranged relative to the first connecting plate 1011 . The first groove 1013 is used to cooperate with and plug into a side portion of the first mounting plate 102 so that the first mounting plate 102 is fixed between the two first side panels 1012 .

[0056] Here, two first grooves 1013 are respectively opened on the opposite surfaces of the two first side plates 1012, and the top end of each first groove 1013 is located at the top of the first side plate 1012 opposite thereto, so that the two side portions of the first connecting plate 1011 can be correspondingly inserted into the two first grooves 1013, thereby facilitating the first mounting plate 102 to be installed on the two first side plates 1012 by cooperating with the two first grooves 1013.

[0057] In some possible embodiments, the second bracket assembly 2 includes a second bracket member 201 and a second mounting plate 202; the second bracket member 201 is used to support the second mounting plate 202; the second mounting plate 202 is provided with a second through hole, and the axes of the second through hole and the first through hole are located on the same straight line; after the output end of the second electric wheel 5 passes through the second through hole, the second electric wheel 5 is connected to the second mounting plate 202.

[0058] It should be noted that the bottom of the second bracket member 201 is connected to the test bench; the radius of the second through hole is slightly larger than the radius of the second electric wheel 5 .

[0059] Here, a second annular member 501 coaxially arranged with the second electric wheel 5 is provided on the second electric wheel 5, and a second connecting hole is opened on the second annular member 501. After the input end of the second electric wheel 5 passes through the second through hole, the second annular member 501 can be abutted against the second mounting plate 202, and then the second electric wheel 5 can be installed on the second mounting plate 202 by cooperating with the bolt assembly 6 and the second connecting hole.

[0060] In this embodiment, the second electric wheel 5 is fixed on the second mounting plate 202 after the input end of the second electric wheel 5 passes through the second through hole. Since the axes of the second through hole and the first through hole are located on the same straight line, the second electric wheel 5 installed on the second mounting plate 202 and the first electric wheel 4 installed on the first mounting plate 102 are coaxially arranged, so that the second electric wheel 5 and the first electric wheel 4 can be coaxially arranged and back-to-back.

[0061] Furthermore, the second bracket member 201 includes a second connecting plate 2011 and a second side plate 2012, the second connecting plate 2011 is used to connect to the test bench; the two second side plates 2012 are relatively arranged on the second connecting plate 2011; the second mounting plate 202 is vertically arranged on the second connecting plate 2011, and the two relatively arranged sides of the second mounting plate 202 are respectively connected to a second side plate 2012.

[0062] Here, the second connecting plate 2011 can be detachably connected to the test bench by a bolt assembly 6, and the second mounting plate 202 can be fixed between the two second side plates 2012 in an adjustable manner, so that the second electric wheel 5 can be adjusted to be coaxially arranged with the first electric wheel 4 by adjusting the position of the second mounting plate 202 between the two second side plates 2012.

[0063] Among them, the two second side plates 2012 are each provided with a second groove 2013, which is vertically arranged relative to the second connecting plate 2011. The second groove 2013 is used to cooperate with a side portion of the second mounting plate 202 to fix the second mounting plate 202 between the two second side plates 2012.

[0064] It should be noted that the two second side panels 2012 are vertically arranged relative to the second connecting plate 2011, so that after the two oppositely arranged sides of the second mounting plate 202 are respectively connected to a second side panel 2012, the second mounting plate 202 can be vertically arranged on the first connecting plate 1011. The second mounting plate 202 can be detachably connected to the two second side panels 2012.

[0065] When the second electric wheel 5 is installed on the second bracket assembly 2, the second electric wheel 5 and the second mounting plate 202 can be connected first, and then the second mounting plate 202 can be fixed on the second bracket member 201 to complete the fixation of the second electric wheel 5 on the second bracket assembly 2.

[0066] Furthermore, the second connecting plate 2011 can be connected to the test bench by adjusting its position so that after the second electric wheel 5 is connected to the second mounting plate 202, the distance between the input end of the second electric wheel 5 and the output end of the first electric wheel 4 is a preset distance.

[0067] Here, a plurality of distributed bolt connection holes are provided on the test bench, so that the second connection plate 2011 can be connected to the test bench in an adjustable position through the cooperation between the bolt assembly 6 and the bolt connection holes.

[0068] In this embodiment, by connecting the second connecting plate 2011 to the test bench in a positionally adjustable manner, the distance between the input end of the second electric wheel 5 fixed on the second bracket assembly 2 and the output end of the first electric wheel 4 fixed on the first bracket assembly 1 is made to be a preset distance, which makes it convenient for the connecting assembly 3 to connect the output end of the first electric wheel 4 and the input end of the second electric wheel 5.

[0069] In some possible embodiments, the connecting assembly 3 includes a first flange 301, a second flange 302 and a pin assembly, the first flange 301 is connected to the output end of the first electric wheel 4; the second flange 302 is connected to the input end of the second electric wheel 5; the pin assembly includes a plurality of pins 303 distributed circumferentially along the first flange 301, and the plurality of pins 303 are used to connect the first flange 301 and the second flange 302 so that the first flange 301 and the second flange 302 are coaxially arranged.

[0070] It should be noted that the shapes of the first flange 301 and the second flange 302 may be the same, that is, the outer edge radii of the first flange 301 and the second flange 302 are the same.

[0071] Here, the first flange 301 and the second flange 302 are both provided with a plurality of pin shaft 303 connecting holes. After the first electric wheel 4 is installed on the first bracket assembly 1 and the second electric wheel 5 is installed on the second bracket assembly 2, the pin shaft 303 connecting holes on the first flange 301 and the pin shaft 303 connecting holes on the second flange 302 correspond one to one, so that after the pin shaft 303 passes through the pin shaft 303 connecting holes on the first flange 301 and the pin shaft 303 connecting holes on the second flange 302, the first flange 301 and the second flange 302 are connected.

[0072] Furthermore, the connecting assembly 3 also includes a pressure plate assembly, and a pressure plate assembly is connected to both sides of the first flange 301 and the second flange 302. The pressure plate assembly includes at least two pressure plates 304, and the at least two pressure plates 304 are arranged in sequence along the circumference of the first flange 301 or the second flange 302, and at least two pressure plates 304 are both against the pin shaft 303 located at the corresponding position of the first flange 301 or the second flange 302.

[0073] In this embodiment, at least two pressing plates 304 abut against the pin shaft 303 located at the corresponding position of the first flange 301 or the second flange 302 to limit the axial position of the pin shaft 303 and prevent the pin shaft 303 from falling out.

[0074] In some possible embodiments, the test device further includes a controller, which is electrically connected to an input end of the first electric wheel 4 , and is used to control at least one of the torque, power and rotation speed of the first electric wheel 4 .

[0075] Here, the first motor 401 of the first electric wheel 4 is controlled by a controller so that the torque, power and rotation speed of the first electric wheel 4 are preset parameters, which can facilitate the operation and control of the first electric wheel 4 by the staff.

[0076] In the description of the present utility model, it should be understood that the terms "first" and "second" are used for descriptive purposes only and should not be understood as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Therefore, a feature defined as "first" or "second" may explicitly or implicitly include one or more of the features. In the description of the present utility model, the meaning of "plurality" is two or more, unless otherwise clearly and specifically defined.

[0077] In the present invention, unless otherwise clearly specified and limited, the terms "install", "connect", "connect", "fix" and the like should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection or an indirect connection through an intermediate medium; it can be the internal connection of two elements or the interaction relationship between two elements. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0078] In the present utility model, unless otherwise clearly specified and limited, when a first feature is “on” or “below” a second feature, it may be that the first and second features are in direct contact, or the first and second features are in indirect contact through an intermediate medium. Moreover, when a first feature is “above”, “above” or “above” a second feature, it may be that the first feature is directly above or obliquely above the second feature, or it may simply mean that the first feature is higher in level than the second feature. When a first feature is “below”, “below” or “below” a second feature, it may be that the first feature is directly below or obliquely below the second feature, or it may simply mean that the first feature is lower in level than the second feature.

[0079] In the description of this specification, the description of the terms "one embodiment", "some embodiments", "embodiment", "exemplary embodiment", "example", "specific example" or "some examples" etc. means that the specific features, structures, materials or characteristics described in conjunction with the embodiment or example are included in at least one embodiment or example of the utility model. In this specification, the schematic representations of the above terms do not necessarily refer to the same embodiment or example. Moreover, the specific features, structures, materials or characteristics described may be combined in any one or more embodiments or examples in a suitable manner. In addition, those skilled in the art may combine and combine the different embodiments or examples described in this specification and the features of the different embodiments or examples, unless they are contradictory.

[0080] Although the embodiments of the present invention have been shown and described above, it can be understood that the above embodiments are illustrative and cannot be understood as limitations of the present invention. Ordinary technicians in the field can change, modify, replace and modify the above embodiments within the scope of the present invention.

Claims

1. A towing test device for electric wheels, characterized in that: include: A first bracket assembly, used for mounting a first electric wheel; A second bracket assembly, arranged opposite to the first bracket assembly and used for mounting a second electric wheel; After the second electric wheel is mounted on the second bracket assembly, the second electric wheel and the first electric wheel are coaxial and arranged opposite to each other; A connecting assembly is used to connect the first electric wheel and the second electric wheel after the first electric wheel is installed on the first bracket assembly and the second electric wheel is installed on the second bracket assembly.

2. The towing test device for electric wheels according to claim 1, characterized in that: The first bracket assembly includes a first bracket member and a first mounting plate; the first bracket member is used to support the first mounting plate; the first mounting plate is provided with a first through hole; after the input end of the first electric wheel passes through the first through hole, the first electric wheel is connected to the first mounting plate.

3. The towing test device for electric wheels according to claim 2, characterized in that: The first bracket member comprises: A first connecting plate, used for connecting to the test bench; A first side plate, two of the first side plates are arranged opposite to each other on the first connecting plate; The first mounting plate is vertically arranged on the first connecting plate, and two oppositely arranged sides of the first mounting plate are respectively connected to one of the first side plates.

4. The towing test device for electric wheels according to claim 3, characterized in that: The two first side panels are each provided with a first groove, the first groove being vertically arranged relative to the first connecting plate, and the first groove being used for mating with a side portion of the first mounting plate so as to fix the first mounting plate between the two first side panels.

5. The towing test device for electric wheels according to claim 2, characterized in that: The second bracket assembly includes a second bracket member and a second mounting plate; the second bracket member is used to support the second mounting plate; the second mounting plate is provided with a second through hole, and the axes of the second through hole and the first through hole are located on the same straight line; after the output end of the second electric wheel passes through the second through hole, the second electric wheel is connected to the second mounting plate.

6. The towing test device for electric wheels according to claim 5, characterized in that: The second bracket member comprises: A second connecting plate, used for connecting with the test bench; A second side plate, two of the second side plates are arranged opposite to each other on the second connecting plate; The second mounting plate is vertically arranged on the second connecting plate, and two oppositely arranged sides of the second mounting plate are respectively connected to one of the second side plates.

7. The towing test device for electric wheels according to claim 6, characterized in that: The second connecting plate can be connected to the test bench in an adjustable position so that after the second electric wheel is connected to the second mounting, the distance between the input end of the second electric wheel and the output end of the first electric wheel is a preset distance.

8. The towing test device for electric wheels according to claim 1, characterized in that: The connection component comprises: A first flange connected to an output end of the first electric wheel; A second flange connected to an input end of the second electric wheel; The pin assembly comprises a plurality of pins distributed along the circumference of the first flange, wherein the plurality of pins are used to connect the first flange and the second flange so that the first flange and the second flange are coaxially arranged.

9. The towing test device for electric wheels according to claim 8, characterized in that: The connection component also includes: A pressure plate assembly, wherein the first flange and the second flange are connected to each other on both sides facing away from each other, and the pressure plate assembly includes at least two pressure plates, and at least two of the pressure plates are arranged in sequence along the circumference of the first flange or the second flange, and at least two of the pressure plates are abutted against the pin shaft located at the corresponding position of the first flange or the second flange.

10. The towing test device for electric wheels according to any one of claims 1 to 9, characterized in that: It also includes a controller, which is electrically connected to the input end of the first electric wheel and is used to control at least one of the torque, power and rotation speed of the first electric wheel.

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