Gearbox performance test bench

Abstract

The utility model relates to gear box performance test technical field discloses gear box performance test test bench, this gear box performance test test bench includes drive motor, rotational speed torque appearance, speed increasing gear box and dynamometer, the output shaft of drive motor is used for with the input shaft of measured gear box detachably transmission connection, the input of rotational speed torque appearance is used for with the output shaft of measured gear box detachably transmission connection, the output of rotational speed torque appearance, speed increasing gear box and dynamometer transmission connection in proper order, and the dynamometer is equipped with temperature control flow channel, and the inlet end of temperature control flow channel is communicated with the output of laboratory temperature control system through first communication pipe, and the outlet end of temperature control flow channel is communicated with the input of laboratory temperature control system through second communication pipe, and first communication pipe is equipped with first switch valve. Can long time stable, reliable and efficient temperature regulation is carried out to dynamometer, need not external waterway, and can avoid setting up the problem of water tank space occupation and cost increase.

Description

Technical Field

[0001] This utility model relates to the field of gearbox performance testing technology, and in particular to a gearbox performance testing test bench. Background Technology

[0002] As one of the important basic components of mechanical equipment, gearboxes usually need to undergo performance testing before leaving the factory to ensure the pass rate and performance of the gearboxes.

[0003] A typical gearbox performance testing bench mainly consists of a drive motor, a tachometer / torque meter, an intermediate gearbox, and a dynamometer. The drive motor, the gearbox under test, the tachometer / torque meter, the intermediate gearbox, and the dynamometer are sequentially connected, enabling the testing of the gearbox's performance. However, gearbox performance testing benches typically require prolonged, uninterrupted high-power operation when testing gearboxes, thus placing high demands on the dynamometer's heat dissipation performance. Currently, one related technology uses a liquid-cooled water tank to cool the dynamometer, but the volume of the liquid-cooled water tank is relatively limited, and the heat dissipation effect and stability of the dynamometer need further improvement. Utility Model Content

[0004] The purpose of this invention is to provide a gearbox performance testing bench to solve the aforementioned problems existing in gearbox performance testing benches in related technologies.

[0005] A gearbox performance testing bench includes a drive motor, a speed and torque meter, a speed-increasing gearbox, and a dynamometer. The output shaft of the drive motor is detachably connected to the input shaft of the gearbox under test. The input end of the speed and torque meter is detachably connected to the output shaft of the gearbox under test. The output end of the speed and torque meter, the speed-increasing gearbox, and the dynamometer are sequentially connected.

[0006] The dynamometer is equipped with a temperature-controlled flow channel. The inlet end of the temperature-controlled flow channel is connected to the output end of the laboratory temperature control system through a first connecting pipe, and the outlet end of the temperature-controlled flow channel is connected to the input end of the laboratory temperature control system through a second connecting pipe. The first connecting pipe is equipped with a first switching valve.

[0007] As an optional solution for the aforementioned gearbox performance testing bench, the first connecting pipe is also equipped with a temperature detector, which is used to detect the temperature of the fluid inside the first connecting pipe.

[0008] As an optional solution for the aforementioned gearbox performance testing bench, the temperature detector is located downstream of the first switching valve.

[0009] As an optional solution for the aforementioned gearbox performance testing bench, the first connecting pipe is also equipped with a flow detector, which is used to detect the flow rate of the fluid in the first connecting pipe.

[0010] As an optional solution for the aforementioned gearbox performance testing bench, the flow detector is located downstream of the first switching valve.

[0011] As an optional solution for the aforementioned gearbox performance testing test bench, the gearbox performance testing test bench is also equipped with an alarm. The alarm is used to sound an alarm when the fluid temperature in the first connecting pipe is greater than a set temperature value, and also to sound an alarm when the fluid flow rate in the first connecting pipe is less than a set flow rate value.

[0012] As an optional solution for the aforementioned gearbox performance testing bench, the second connecting pipe is equipped with a second switching valve.

[0013] As an optional embodiment of the aforementioned gearbox performance testing bench, the output shaft of the drive motor is detachably connected to the input shaft of the gearbox under test via a first double-flange double-diaphragm elastic coupling; and / or,

[0014] The input end of the tachometer / torque meter is detachably connected to the output shaft of the gearbox being measured via a second double-flange double-diaphragm flexible coupling; and / or,

[0015] The output of the tachometer / torque meter is detachably connected to the input shaft of the speed-increasing gearbox via a third double-flange double-diaphragm flexible coupling; and / or,

[0016] The output shaft of the speed-increasing gearbox is connected to the input shaft of the dynamometer via a fourth double-flange double-diaphragm flexible coupling.

[0017] As an optional embodiment of the aforementioned gearbox performance testing bench, the gearbox performance testing bench further includes a support frame. The support frame has an installation space extending along a direction. The input shaft and output shaft of the gearbox under test are perpendicularly distributed. The housing of the drive motor is fixedly supported on the top of the support frame along the direction and is detachably connected to the input shaft of the gearbox under test within the installation space. The support frame is fixedly supported on the housing of the gearbox under test along the bottom of the direction. The direction is parallel to the axial direction of the input shaft of the gearbox under test.

[0018] As an optional solution for the aforementioned gearbox performance testing bench, the support frame is further provided with a through hole communicating with the installation space, the through hole being located between the top and bottom of the installation space along the orientation.

[0019] Beneficial effects:

[0020] This utility model provides a gearbox performance testing bench, which includes a drive motor, a tachometer / torque meter, a speed-increasing gearbox, and a dynamometer. The output shaft of the drive motor is detachably connected to the input shaft of the gearbox under test, and the input end of the tachometer / torque meter is detachably connected to the output shaft of the gearbox under test. The output end of the tachometer / torque meter, the speed-increasing gearbox, and the dynamometer are sequentially connected. The dynamometer is equipped with a temperature-controlled flow channel. The inlet end of the temperature-controlled flow channel is connected to the output end of the laboratory temperature control system through a first connecting pipe, and the outlet end of the temperature-controlled flow channel is connected to the input end of the laboratory temperature control system through a second connecting pipe. The first connecting pipe is equipped with a first switching valve.

[0021] When testing the gearbox under test, the input shaft of the gearbox is connected to the output shaft of the drive motor, and the output shaft of the gearbox is connected to the output end of the tachometer / torque meter. The drive motor is controlled to drive the gearbox under test to detect its working performance. A temperature-controlled flow channel is connected to the output end of the laboratory temperature control system via a first connecting pipe, and the outlet end of the temperature-controlled flow channel is connected to the input end of the laboratory temperature control system via a second connecting pipe. The first connecting pipe is equipped with a first switching valve. When the dynamometer needs temperature adjustment, the first switching valve is controlled to connect the output end of the laboratory temperature control system and the inlet port of the temperature-controlled flow channel. The fluid in the laboratory temperature control system is then transported to the temperature-controlled flow channel through the first connecting pipe, allowing the fluid passing through the laboratory temperature control system to directly regulate the temperature of the dynamometer. Compared to related technologies that use a liquid cooling tank, this method provides long-term, stable, reliable, and efficient temperature regulation of the dynamometer without the need for an external water circuit, and avoids the space occupation and increased cost associated with a liquid cooling tank. Attached Figure Description

[0022] Figure 1 A schematic diagram of the first part of the gearbox performance testing bench provided in this embodiment of the utility model;

[0023] Figure 2 A schematic diagram of the second part of the gearbox performance testing bench provided in this embodiment of the utility model;

[0024] Figure 3 A schematic diagram of the structure of the fourth double-flange double-diaphragm elastic coupling provided in this embodiment of the utility model;

[0025] Figure 4 A schematic diagram of the diaphragm structure of the fourth double-flange double-diaphragm elastic coupling provided in this embodiment of the utility model;

[0026] Figure 5 This is a schematic diagram of the third part of the gearbox performance testing bench provided in this embodiment of the utility model.

[0027] In the picture:

[0028] 100. The gearbox under test;

[0029] 1. Drive motor; 2. Speed ​​and torque meter; 3. Speed-increasing gearbox; 4. Dynamometer; 5. Laboratory temperature control system; 6. First connecting pipe; 7. Second connecting pipe; 8. First switching valve; 9. Temperature detector; 10. Flow detector; 11. Second switching valve; 12. Fourth double-flange double-diaphragm flexible coupling; 121. Diaphragm; 1211. Connecting hole; 13. Support platform; 14. Support frame; 141. Installation space; 142. Upper support plate; 143. Lower support plate; 144. Support column. Detailed Implementation

[0030] The technical solution of this utility model will now be clearly and completely described with reference to the accompanying drawings. Obviously, the described embodiments are only some, not all, of the embodiments of this utility model. Based on the embodiments of this utility model, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of this utility model.

[0031] In the description of this utility model, it should be noted that the terms "center," "upper," "lower," "left," "right," "vertical," "horizontal," "inner," and "outer," etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are used only for the convenience of describing this utility model and for simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this utility model. Furthermore, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance. The terms "first position" and "second position" refer to two different positions. Moreover, "above," "on top of," and "over" the first feature in relation to the second feature includes the first feature directly above and diagonally above the second feature, or simply indicates that the first feature is at a higher horizontal level than the second feature. "Below," "under," and "below" the first feature in relation to the second feature includes the first feature directly below and diagonally below the second feature, or simply indicates that the first feature is at a lower horizontal level than the second feature.

[0032] In the description of this utility model, it should be noted that, unless otherwise explicitly specified and limited, the terms "installation," "connection," and "joining" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; 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; and they can refer to the internal connection of two components. Those skilled in the art can understand the specific meaning of the above terms in this utility model based on the specific circumstances.

[0033] The embodiments of this utility model are described in detail below. Examples of these embodiments are shown in the accompanying drawings, wherein the same or similar reference numerals denote the same or similar elements or elements having the same or similar functions throughout. The embodiments described below with reference to the accompanying drawings are exemplary and are only used to explain this utility model, and should not be construed as limiting this utility model.

[0034] This utility model provides a gearbox performance testing bench, such as Figure 1 and Figure 2 As shown, the gearbox performance testing bench is used to test the performance of the gearbox 100 under test. The gearbox performance testing bench includes a drive motor 1, a tachometer / torque meter 2, a speed-increasing gearbox 3, and a dynamometer 4. The output shaft of the drive motor 1 is detachably connected to the input shaft of the gearbox 100 under test. The input end of the tachometer / torque meter 2 is detachably connected to the output shaft of the gearbox 100 under test. The output end of the tachometer / torque meter 2, the speed-increasing gearbox 3, and the dynamometer 4 are sequentially connected. The dynamometer 4 is equipped with a temperature-controlled flow channel. The inlet end of the temperature-controlled flow channel is connected to the output end of the laboratory temperature control system 5 through a first connecting pipe 6, and the outlet end of the temperature-controlled flow channel is connected to the input end of the laboratory temperature control system 5 through a second connecting pipe 7. The first connecting pipe 6 is equipped with a first switching valve 8.

[0035] When testing the gearbox 100 under test, the input shaft of the gearbox 100 under test is connected to the output shaft of the drive motor 1, and the output shaft of the gearbox 100 under test is connected to the output end of the speed and torque meter 2. The drive motor 1 is controlled to drive the gearbox 100 under test to run, so as to detect the working performance of the gearbox 100 under test. By setting the inlet end of the temperature-controlled flow channel to be connected to the output end of the laboratory temperature control system 5 through the first connecting pipe 6, and the outlet end of the temperature-controlled flow channel to be connected to the input end of the laboratory temperature control system 5 through the second connecting pipe 7, and the first connecting pipe 6 is equipped with a first switching valve 8, when the temperature of the dynamometer 4 needs to be adjusted, the first switching valve 8 is controlled to connect the output end of the laboratory temperature control system 5 and the inlet end of the temperature-controlled flow channel, so that the fluid in the laboratory temperature control system 5 is transported to the temperature-controlled flow channel through the first connecting pipe 6, so that the fluid passing through the laboratory temperature control system 5 directly regulates the temperature of the dynamometer 4. Compared with the liquid cooling water tank in related technologies, it can stably, reliably and efficiently regulate the temperature of the dynamometer 4 for a long time, without the need for an external water circuit, and avoids the problems of space occupation and increased cost of setting up a liquid cooling water tank.

[0036] Specifically, by connecting the speed-increasing gearbox 3 between the tachometer / torque meter 2 and the dynamometer 4, the dynamometer 4 can still normally detect the working performance of the gearbox 100 when it is running at low speed.

[0037] Specifically, the specific structures of the drive motor 1, the speed and torque meter 2, the speed-increasing gearbox 3, the dynamometer 4, and the laboratory temperature control system 5 are all existing technologies, and therefore will not be described in detail here.

[0038] Specifically, in this embodiment, as Figure 1 As shown, the gearbox performance testing bench includes a support platform 13, on which the speed-increasing gearbox 3 is supported. Preferably, the support platform 13 is a lifting support platform, allowing the height of the speed-increasing gearbox 3 to be adaptively adjusted according to the height of the input shaft of the dynamometer 4, thereby facilitating the transmission connection between the output shaft of the speed-increasing gearbox 3 and the input shaft of the dynamometer 4. The specific structure of the lifting support platform 13 is prior art and will not be described in detail here.

[0039] Optionally, in this embodiment, as Figure 2 As shown, the first connecting pipe 6 is also equipped with a temperature detector 9, which is used to detect the temperature of the fluid inside the first connecting pipe 6. This facilitates the control of the temperature of the fluid delivered to the temperature-controlled flow channel by the laboratory temperature control system 5 based on the detected temperature, thereby further improving the effect of long-term stable, reliable and efficient temperature regulation of the dynamometer 4.

[0040] In this embodiment, the temperature detector 9 is exemplaryly configured as a temperature sensor.

[0041] Further, optionally, in this embodiment, as Figure 2 As shown, the temperature detector 9 is located downstream of the first switching valve 8. This further improves the accuracy of controlling the temperature of the fluid delivered to the temperature-controlled flow channel by the laboratory temperature control system 5, thereby further enhancing the long-term, stable, reliable, and efficient temperature regulation of the dynamometer 4. In other embodiments, the temperature detector 9 may also be located upstream of the first switching valve 8.

[0042] Optionally, in this embodiment, as Figure 2 As shown, the first connecting pipe 6 is also equipped with a flow detector 10, which is used to detect the flow rate of the fluid in the first connecting pipe 6. This allows for adjustment of the output flow rate of the fluid from the laboratory temperature control system 5 based on the detected flow rate, thereby further improving the long-term, stable, reliable, and efficient temperature regulation of the dynamometer 4.

[0043] In this embodiment, the flow detector 10 is configured as a flow sensor.

[0044] Further, optionally, in this embodiment, as Figure 2 As shown, the flow detector 10 is located downstream of the first switching valve 8. In other embodiments, the flow detector 10 may also be located upstream of the first switching valve 8.

[0045] Optionally, in this embodiment, the gearbox performance testing bench is also equipped with an alarm. The alarm is used to sound an alarm when the fluid temperature in the first connecting pipe 6 exceeds a set temperature value, and also to sound an alarm when the fluid flow rate in the first connecting pipe 6 is less than a set flow rate value. This allows staff to promptly adjust the temperature and flow rate of the fluid output from the laboratory temperature control system 5. The set temperature value and set flow rate value are empirical values ​​obtained from numerous previous experiments.

[0046] In this embodiment, the alarm is exemplarily set as an audible and visual alarm.

[0047] Optionally, in this embodiment, as Figure 2 As shown, the second connecting pipe 7 is equipped with a second switching valve 11. When the gearbox performance test bench is not working, both the first switching valve 8 and the second switching valve 11 are in the off state, which can prevent fluid from flowing into the temperature control channel and causing energy consumption, and can effectively improve the stability and reliability of the laboratory temperature control system 5 in regulating the temperature of other equipment.

[0048] Optionally, the output shaft of the drive motor 1 is detachably connected to the input shaft of the gearbox 100 under test via a first double-flange double-diaphragm elastic coupling. This facilitates the connection between the output shaft of the drive motor 1 and the input shaft of the gearbox 100 under test; secondly, during high-speed operation, it ensures the reliability of the connection between the output shaft of the drive motor 1 and the input shaft of the gearbox 100 under test, and reduces the impact of vibration on the dynamometer 4. As an alternative, in this embodiment, the output shaft of the drive motor 1 and the input shaft of the gearbox 100 under test are exemplarily connected directly via two flanges. Specifically, one flange is fixedly fitted onto the output shaft of the drive motor 1, and the other flange is fixedly fitted onto the outer circumference of the input shaft of the gearbox 100 under test. The two flanges are fixedly connected by bolts and nuts.

[0049] Optionally, the input end of the tachometer / torque meter 2 is detachably connected to the output shaft of the gearbox 100 under test via a second double-flange double-diaphragm flexible coupling. This facilitates the connection between the input end of the tachometer / torque meter 2 and the output shaft of the gearbox 100 under test; secondly, during high-speed operation, it ensures the reliability of the connection between the input end of the tachometer / torque meter 2 and the output shaft of the gearbox 100 under test, and reduces the impact of vibration on the dynamometer 4. As an alternative, in this embodiment, the input end of the tachometer / torque meter 2 is exemplaryly connected to the output shaft of the gearbox 100 under test via two flanges.

[0050] Optionally, the output end of the tachometer / torque meter 2 is detachably connected to the input shaft of the speed-increasing gearbox 3 via a third double-flange double-diaphragm flexible coupling. This facilitates the connection between the output end of the tachometer / torque meter 2 and the input shaft of the speed-increasing gearbox 3; secondly, during high-speed operation, it ensures the reliability of the connection between the output end of the tachometer / torque meter 2 and the input shaft of the speed-increasing gearbox 3, and reduces the impact of vibration on the dynamometer 4. As an alternative, in this embodiment, the output end of the tachometer / torque meter 2 and the input shaft of the speed-increasing gearbox 3 are exemplarily connected via two flanges.

[0051] Optionally, in this embodiment, as Figure 1 and Figure 3 As shown, the output shaft of the speed-increasing gearbox 3 is connected to the input shaft of the dynamometer 4 via a fourth double-flange double-diaphragm flexible coupling 12. This facilitates the connection between the output shaft of the speed-increasing gearbox 3 and the input shaft of the dynamometer 4; secondly, during high-speed operation, it ensures the reliability of the connection between the output shaft of the speed-increasing gearbox 3 and the input shaft of the dynamometer 4, and reduces the impact of vibration on the dynamometer 4. Further, in this embodiment, as... Figure 1 , Figure 3 and Figure 4 As shown, the exemplary fourth double-flange double-diaphragm flexible coupling 12 has six connecting holes 1211 spaced apart along its circumference on the diaphragm 1211. The number of connecting holes 1211 can also be increased or decreased according to actual working conditions.

[0052] As an alternative, the output shaft of the speed-increasing gearbox 3 is connected to the input shaft of the dynamometer 4 via two flanges.

[0053] Specifically, the structure of the double-flange double-diaphragm flexible coupling is existing technology and will not be described in detail here.

[0054] In this embodiment, the gearbox 100 under test is exemplaryly configured as an escalator gearbox. The input shaft and the output shaft of the gearbox 100 under test are perpendicularly distributed.

[0055] Optionally, in this embodiment, as Figure 1 and Figure 5As shown, the gearbox performance testing bench also includes a support frame 14. The support frame 14 has an installation space 141 extending along a direction. The housing of the drive motor 1 is fixedly supported on the top of the support frame 14 along the direction and is detachably connected to the input shaft of the gearbox 100 under test within the installation space 141. The bottom of the support frame 14 is fixedly supported on the housing of the gearbox 100 under test, and the direction is parallel to the axial direction of the input shaft of the gearbox 100 under test. By setting the housing of the drive motor 1 to be fixedly supported on the top of the support frame 14 along the direction and the bottom of the support frame 14 to be fixedly supported on the housing of the gearbox 100 under test, the weight of the drive motor 1 can be effectively avoided from damaging the transmission components of the gearbox 100 under test, thereby ensuring the accuracy of the test.

[0056] Alternatively, in this embodiment, the support frame 14 is further provided with a through hole communicating with the mounting space 141, the through hole being oriented between the top and bottom of the mounting space 141. This facilitates observation of the reliability of the transmission connection between the output shaft of the test drive motor 1 and the input shaft of the gearbox 100 under test, and also reduces the weight of the support frame 14.

[0057] Specifically, in this embodiment, as Figure 1 and Figure 5 As shown, the exemplary support frame 14 includes an upper support plate 142, a lower support plate 143, and at least two support columns 144 connected between the upper support plate 142 and the lower support plate 143. The upper support plate 142, the lower support plate 143, and the at least two support columns 144 enclose an installation space 141. A through hole is formed between any two adjacent support columns 144. The housing of the drive motor 1 is fixedly supported on the upper support plate 142. The output shaft of the drive motor 1 passes through the upper support plate 142 along the orientation. The lower support plate 143 is fixedly supported on the housing of the gearbox 100 under test. The input shaft of the gearbox 100 under test passes through the lower support plate 143 along the orientation and is connected to the output shaft of the drive motor 1.

[0058] Obviously, the above embodiments of this utility model are merely examples for clearly illustrating the present utility model, and are not intended to limit the implementation of the present utility model. Those skilled in the art should understand that the scope of disclosure involved in this utility model is not limited to the technical solutions formed by specific combinations of the above-described technical features, but should also cover other technical solutions formed by arbitrary combinations of the above-described technical features or their equivalent features without departing from the above-described concept. For example, technical solutions formed by substituting the above-described features with (but not limited to) technical features with similar functions disclosed in this utility model. Any modifications, equivalent substitutions, and improvements made within the spirit and principles of this utility model should be included within the protection scope of the claims of this utility model.

Claims

1. A gearbox performance testing bench, characterized in that, The device includes a drive motor (1), a speed and torque meter (2), a speed-increasing gearbox (3), and a dynamometer (4). The output shaft of the drive motor (1) is detachably connected to the input shaft of the gearbox (100) under test. The input end of the speed and torque meter (2) is detachably connected to the output shaft of the gearbox (100) under test. The output end of the speed and torque meter (2), the speed-increasing gearbox (3), and the dynamometer (4) are sequentially connected. The dynamometer (4) is equipped with a temperature control channel. The inlet end of the temperature control channel is connected to the output end of the laboratory temperature control system (5) through a first connecting pipe (6). The outlet end of the temperature control channel is connected to the input end of the laboratory temperature control system (5) through a second connecting pipe (7). The first connecting pipe (6) is equipped with a first switching valve (8).

2. The gearbox performance testing bench according to claim 1, characterized in that, The first connecting pipe (6) is also provided with a temperature detector (9), which is used to detect the temperature of the fluid in the first connecting pipe (6).

3. The gearbox performance testing bench according to claim 2, characterized in that, The temperature detector (9) is located downstream of the first switching valve (8).

4. The gearbox performance testing bench according to claim 1, characterized in that, The first connecting pipe (6) is also provided with a flow detector (10), which is used to detect the flow rate of the fluid in the first connecting pipe (6).

5. The gearbox performance testing bench according to claim 4, characterized in that, The flow detector (10) is located downstream of the first switching valve (8).

6. The gearbox performance testing bench according to claim 1, characterized in that, The gearbox performance test bench is also equipped with an alarm. The alarm is used to sound an alarm when the fluid temperature in the first connecting pipe (6) is greater than the set temperature value, and to sound an alarm when the fluid flow rate in the first connecting pipe (6) is less than the set flow rate value.

7. The gearbox performance testing bench according to any one of claims 1-6, characterized in that, The second connecting pipe (7) is equipped with a second switching valve (11).

8. The gearbox performance testing bench according to any one of claims 1-6, characterized in that: The output shaft of the drive motor (1) is detachably connected to the input shaft of the gearbox (100) under test via a first double-flange double-diaphragm elastic coupling; and / or, The input end of the speed and torque meter (2) is detachably connected to the output shaft of the gearbox (100) under test via a second double-flange double-diaphragm elastic coupling; and / or, The output end of the tachometer (2) is detachably connected to the input shaft of the speed-increasing gearbox (3) via a third double-flange double-diaphragm flexible coupling; and / or, The output shaft of the speed-increasing gearbox (3) is connected to the input shaft of the dynamometer (4) via a fourth double-flange double-diaphragm elastic coupling (12).

9. The gearbox performance testing bench according to any one of claims 1-6, characterized in that, The gearbox performance test bench also includes a support frame (14), which has an installation space (141) extending along a direction. The input shaft and output shaft of the gearbox under test (100) are vertically distributed. The housing of the drive motor (1) is fixedly supported on the top of the support frame (14) along the direction and is detachably connected to the input shaft of the gearbox under test (100) within the installation space (141). The support frame (14) is fixedly supported on the housing of the gearbox under test (100) along the bottom of the direction. The direction is parallel to the axial direction of the input shaft of the gearbox under test (100).

10. The gearbox performance testing bench according to claim 9, characterized in that, The support frame (14) is also provided with a through hole communicating with the mounting space (141), the through hole being located between the top and bottom of the mounting space (141) along the orientation.

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