A swing angle type wheel edge reducer performance detection test bench and test method

Abstract

The present application relates to the technical field of mechanical transmission performance test, and especially relates to a swing angle type wheel edge reducer performance test testbed and a test method, the testbed comprises a sliding mechanism with a sliding plate and a slide rail assembly suitable for sliding of the sliding plate, a driving piece connected with the sliding plate, a test assembly and a sensor group, the test assembly comprises test swing angle type wheel edge reducers and accompanying test swing angle type wheel edge reducers symmetrically arranged on both sides of the sliding mechanism, a first rotation speed torque sensor and a second rotation speed torque sensor connected with the two reducers through a first telescopic transmission shaft respectively, a speed regulating motor and a loading motor connected with the two rotation speed torque sensors respectively, the two reducers are connected with the sliding plate through a second telescopic transmission shaft, the driving piece drives the two reducers to rotate, and the sensor group is used for monitoring performance parameters of the two reducers, the testbed is symmetrically distributed, and the simulation of actual working conditions of the swing angle type wheel edge reducer is realized by using the second telescopic transmission shaft and the sliding mechanism.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of mechanical transmission performance test, and in particular to a swing angle type wheel edge reducer performance test test bench and test method. BACKGROUND

[0002] The wheel edge reducer is the last stage of the vehicle walking system, and the swing angle type wheel edge reducer is different from other types of vehicle wheel edge reducers. The biggest feature is that it has a ball cage universal joint, that is, it has a steering function. Due to the high transmission density and complex structure of the wheel edge reducer itself, in order to ensure the reliability of the transmission, simulation test analysis needs to be carried out according to the structure characteristics and actual working conditions of the swing angle type wheel edge reducer.

[0003] At present, the known test bench cannot simulate the actual running state of the swing angle type wheel edge reducer, and cannot test the steering function. The biggest technical feature of the swing angle type wheel edge reducer is the steering function, which is an important guarantee for completing the performance test and mechanical power determination of the swing angle type wheel edge reducer. SUMMARY

[0004] In order to solve the above technical problems, the present application provides a swing angle type wheel edge reducer performance test test bench and test method which can simulate the actual working state of the swing angle type wheel edge reducer.

[0005] The first aspect of the present application provides a swing angle type wheel edge reducer performance test test bench, comprising:

[0006] A sliding mechanism, the sliding mechanism comprises a sliding plate and a slide rail assembly, the sliding plate is adapted to move along the extension direction of the slide rail assembly;

[0007] A driving member, the driving member is connected with the sliding plate;

[0008] A test assembly, the test assembly comprises a test wheel edge reducer, a test wheel edge reducer, a first speed torque sensor, a second speed torque sensor, a speed regulating motor and a loading motor, the test wheel edge reducer and the test wheel edge reducer are symmetrically arranged on both sides of the sliding mechanism, and are connected with the sliding plate through a second telescopic transmission shaft, and the high speed input end thereof is connected with the first speed torque sensor and the second speed torque sensor through a first telescopic transmission shaft, respectively, the speed regulating motor is connected with the first speed torque sensor, and the loading motor is connected with the second speed torque sensor, the driving member is driven to drive the sliding plate to move along the extension direction of the slide rail assembly, and the second telescopic transmission shaft is driven to rotate, so as to drive the planetary gear of the test wheel edge reducer and the test wheel edge reducer to rotate;

[0009] A sensor group is arranged on the test wheel side reducer and the test wheel side reducer respectively to monitor the performance parameters of the test wheel side reducer and the test wheel side reducer.

[0010] Optionally, the sliding plate comprises a connecting plate and an ear seat, the upper surface of the connecting plate is provided with a bearing seat, the second telescopic transmission shaft is connected with the bearing seat, and the ear seat is arranged on the upper surface of the sliding plate.

[0011] Optionally, the sliding rail assembly comprises a sliding rail and a sliding block, the sliding block is adapted to move along the extension direction of the sliding rail, and the sliding plate is connected with the sliding block.

[0012] Optionally, the sensor group comprises a high-speed level vibration acceleration sensor, a temperature sensor and a planetary level vibration acceleration sensor to monitor the vibration data of the test wheel side reducer and the test wheel side reducer and the temperature of the internal planetary lubricating oil thereof respectively.

[0013] The specifications and installation positions of the temperature sensors arranged inside the test wheel side reducer and the test wheel side reducer are the same, and the temperature, grade and oil amount of the lubricating oil used by the test wheel side reducer and the test wheel side reducer are the same.

[0014] Optionally, two temperature sensors are arranged on the test swing angle type wheel side reducer and the test swing angle type wheel side reducer respectively, and the two temperature sensors are arranged on the high-speed level and the low-speed level of the test swing angle type wheel side reducer and the test swing angle type wheel side reducer respectively.

[0015] Optionally, the test wheel side reducer and the test wheel side reducer are the same in structure and specification, and both comprise the same internal gears, bearings and connecting pieces.

[0016] Optionally, the telescopic amount of the second telescopic transmission shaft is adapted to the rotation of the test wheel side reducer and the test wheel side reducer to the maximum angle position.

[0017] The stroke of the driving member and the length of the sliding rail assembly are adapted to the reciprocating motion of the sliding plate.

[0018] The second aspect of the present application provides a test method of a swing angle type wheel side reducer performance test bench, which is completed based on the swing angle type wheel side reducer performance test bench of any of the above embodiments, and comprises the following steps:

[0019] S1, starting the speed regulating motor for trial operation, the speed reaches the rated speed, and the operation is ensured to be normal;

[0020] S2, the driving member adopts a relay or a magnetic induction or an encoder control stroke, simulating the rotation angle speed of the test swing angle type wheel edge reducer under the operating condition;

[0021] S3, sequentially performing the no-load test, the efficiency test, the temperature rise test, the overload test and the overspeed test;

[0022] S4, the rotational speed and the torque of the first rotational speed torque sensor are monitored in real time, when the relative error is greater than a set value, the speed regulating motor and the loading motor are real-time regulated and controlled;

[0023] S5, the relevant data are recorded and saved in the process of the stage test, the torque value collected by the first rotational speed torque sensor is T1, the rotational speed value is n1, the torque value collected by the second rotational speed torque sensor is T2, the rotational speed value is n2, the above data are each collected more than or equal to three groups, the average value of the collected data is obtained, and the working efficiency of the test wheel edge reducer is:

[0024]

[0025] S6, the sensor group collects the acceleration response signal of the test wheel edge reducer, analyzes the signal data, obtains the frequency domain response signal of the test wheel edge reducer, and completes the dynamic performance quality evaluation of the test wheel edge reducer;

[0026] S7, the sensor group collects the lubricating oil temperature of the test wheel edge reducer, and obtains a trend graph of the lubricating oil temperature affected by time and power factor.

[0027] The technical scheme provided by the embodiment of the application has the following beneficial effects compared with the prior art:

[0028] The embodiment of the present application provides a swing angle type wheel edge reducer performance detection test bench and a test method, the swing angle type wheel edge reducer performance detection test bench is symmetrical in the center of a sliding mechanism, test swing angle type wheel edge reducers and test swing angle type wheel edge reducers are connected with the sliding plate structure through the second telescopic transmission shaft, the sliding plate can be driven to reciprocate on the slide rail assembly through the driving driving part, so that the second telescopic transmission shaft connected with the sliding plate is driven to rotate, so that the test swing angle type wheel edge reducer and the test swing angle type wheel edge reducer are driven to rotate, the actual state of simulating the swing angle type wheel edge reducer is realized, the test bench is symmetrically distributed, power transmission is realized through the first telescopic transmission shaft and the second telescopic transmission shaft, the assembly process is simplified, and the working efficiency is improved, the actual working condition of the swing angle type wheel edge reducer is simulated by using the second telescopic transmission shaft and the sliding mechanism, the performance parameters of the test swing angle type wheel edge reducer and the test swing angle type wheel edge reducer are monitored through the sensor group, the real-time monitoring of various data in the test is realized, the rotational speed and the torque of the power source input are corrected in time according to the data feedback, the data fluctuation deviation existing in the test process is compensated, and the accuracy of the test data is improved. BRIEF DESCRIPTION OF DRAWINGS

[0029] The drawings incorporated into the specification and constituting a part of the specification show embodiments consistent with the present application and, together with the specification, serve to explain the principles of the present application.

[0030] In order to more clearly illustrate the technical solutions in the embodiments of the present application or the prior art, the drawings needed to be used in the embodiments or the prior art description will be briefly introduced as follows, and obviously, other drawings can be obtained by those skilled in the art without creative labor.

[0031] Figure 1 The structural schematic diagram of the swing angle type wheel edge reducer performance detection test bench described in the embodiment of the present application;

[0032] Figure 2 The structural schematic diagram of the sliding mechanism described in the embodiment of the present application;

[0033] Figure 3 The sectional view of the sliding mechanism described in the embodiment of the present application;

[0034] Figure 4 The structural schematic diagram of the swing angle type wheel edge reducer performance detection test bench reaching the first limit position described in the embodiment of the present application;

[0035] Figure 5 The structural schematic diagram of the swing angle type wheel edge reducer performance detection test bench reaching the second limit position described in the embodiment of the present application.

[0036] Wherein, 1, speed regulating motor; 2, speed regulating motor support; 3, connecting disc; 4, first rotating speed torque sensor; 5, rotating speed torque sensor support; 6, first telescopic transmission shaft; 7, test swing angle type wheel edge reducer; 8, swing angle type wheel edge reducer support; 9, high speed stage vibration acceleration sensor; 10, temperature sensor; 11, planetary stage vibration acceleration sensor; 12, loading motor; 13, loading motor support; 14, second rotating speed torque sensor; 15, accompanying test swing angle type wheel edge reducer; 16, bearing seat; 17, bearing seat support; 18, sliding mechanism; 19, second telescopic transmission shaft; 20, driving member; 21, driving member support; 22, sliding plate; 2201, lug seat; 2202, connecting plate; 2203, threaded hole; 2204, first counterbore; 23, sliding rail assembly; 2301, second counterbore; 2302, sliding rail; 2303, sliding block. DETAILED DESCRIPTION

[0037] In order to more clearly understand the above-mentioned purposes, features and advantages of the present application, the schemes of the present application will be further described below. It should be noted that the embodiments of the present application and the features in the embodiments can be combined with each other without conflict.

[0038] In the following description, a lot of specific details are set forth in order to facilitate a thorough understanding of the present application, but the present application can also be implemented in other different ways from those described herein; obviously, the embodiments in the specification are only some of the embodiments of the present application, not all the embodiments.

[0039] Reference Figures 1 to 5 As shown in the drawings, the first aspect of the present embodiment provides a swing angle type wheel edge reducer performance detection test bench, which comprises a sliding mechanism, a driving member 20, a test assembly and a sensor group.

[0040] The sliding mechanism includes a sliding plate 22 and a slide rail assembly 23. The sliding plate 22 is adapted to move along the extension direction of the slide rail assembly 23. The driving component 20 is connected to the sliding plate 22. The test assembly includes a test swing angle wheel-side reducer 7, a test swing angle wheel-side reducer 15, a first speed and torque sensor 4, a second speed and torque sensor 14, a speed regulating motor 1, and a loading motor 12. The test swing angle wheel-side reducer 7 and the test swing angle wheel-side reducer 15 are symmetrically arranged on both sides of the sliding mechanism and are both connected to the sliding plate 22 through a second telescopic transmission shaft 19. Their high-speed input ends are respectively connected to the first telescopic transmission shaft 6 and the first... The speed and torque sensor 4 is connected to the second speed and torque sensor 14. The speed regulating motor 1 is connected to the first speed and torque sensor 4. The loading motor 12 is connected to the second speed and torque sensor 14. The driving drive component 20 drives the sliding plate 22 to move along the extension direction of the slide rail assembly 23, thereby driving the second telescopic transmission shaft 19 to rotate, so as to drive the planetary-like rotation of the test swing angle wheel-side reducer 7 and the auxiliary swing angle wheel-side reducer 15. The sensor group is respectively set on the test swing angle wheel-side reducer 7 and the auxiliary swing angle wheel-side reducer 15 to monitor the performance parameters of the test swing angle wheel-side reducer 7 and the auxiliary swing angle wheel-side reducer 15.

[0041] Specifically, refer to Figure 1 and Figure 2 As shown, the test swing-angle wheel-side reducer 7 and the auxiliary swing-angle wheel-side reducer 15 are symmetrically distributed around the sliding mechanism, and their high-speed stage end faces are connected to the swing-angle wheel-side reducer bracket 8. The first speed and torque sensor 4 and the second speed and torque sensor 14 are both fixed through the speed and torque sensor bracket 5. The first speed and torque sensor 4 and the speed regulating motor 1, as well as the second speed and torque sensor 14 and the loading motor 12, are connected through the connecting plate 3. The speed regulating motor 1 is fixed through the speed regulating motor bracket 2, and the loading motor 12 is fixed through the loading motor bracket 13. The driving component 20 can drive the sliding plate 22 to reciprocate on the slide rail assembly 23, thereby driving the second telescopic transmission shaft 19 connected to the sliding plate 22 to rotate, so as to drive the sliding plate 22 to rotate. The planetary-level rotation of the test swing-angle wheel-side reducer 7 and the accompanying swing-angle wheel-side reducer 15 simulates the actual turning state of the swing-angle wheel-side reducer. The performance parameters of the test and accompanying swing-angle wheel-side reducers 7 and 15 are monitored by a sensor array, enabling real-time monitoring of various data during the test. Simultaneously, the speed and torque input to the power source are promptly corrected based on data feedback, compensating for data fluctuations and improving the accuracy of the test data. This test bench is symmetrically distributed, and power transmission is achieved through the first telescopic drive shaft 6 and the second telescopic drive shaft 19, simplifying the assembly process and improving work efficiency. The second telescopic drive shaft 19 and the sliding mechanism simulate the actual working conditions of the swing-angle wheel-side reducer.

[0042] Furthermore, refer to Figure 2 and Figure 3 As shown, the sliding plate 22 includes a connecting plate 2202 and an ear seat 2201. A bearing seat 16 is provided on the upper surface of the connecting plate 2202. The second telescopic transmission shaft 19 is connected to the bearing seat 16. The ear seat 2201 is provided on the upper surface of the sliding plate 22. The driving member 20 is connected to the ear seat 2201. The slide rail assembly 23 includes a slide rail 2302 and a slider 2303. The slider 2303 is adapted to move along the extension direction of the slide rail 2302. The sliding plate 22 is connected to the slider 2303. Specifically, the driving component 20 is an electric push rod. Of course, the driving component 20 can also be other components with telescopic function. The connecting plate 2202 has a threaded hole 2203. The bearing seat 16 is connected to the connecting plate 2202 by screws passing through the threaded hole 2203. The connecting plate 2202 has a first countersunk hole 2204. The connecting plate 2202 is connected to the slider 2303 by screws passing through the first countersunk hole 2204. The slide rail 2302 has a second countersunk hole 2301. The slide rail 2302 is fixedly connected to the bearing seat bracket 17 by screws passing through the second countersunk hole 2301. One end of the driving component 20 is fixed to the driving component bracket 21, and the other end is connected to the ear seat 2201 to drive the connecting plate 2202 to reciprocate along the extension direction of the slide rail 2302, thereby causing the bearing seat 16 to reciprocate along the extension direction of the slide rail 2302, so as to drive the second telescopic transmission shafts 19 on both sides to rotate.

[0043] Reference Figure 1 As shown, the sensor group includes a high-speed vibration acceleration sensor 9, a temperature sensor 10, and a planetary vibration acceleration sensor 11 to monitor the vibration data and internal planetary lubricating oil temperature of the test pendulum wheel-side reducer 7 and the auxiliary pendulum wheel-side reducer 15, respectively. The specifications and installation positions of the temperature sensors 10 inside the test pendulum wheel-side reducer 7 and the auxiliary pendulum wheel-side reducer 15 are the same. The temperature, grade, and quantity of the lubricating oil used in the test pendulum wheel-side reducer 7 and the auxiliary pendulum wheel-side reducer 15 are also the same. Specifically, the data collected by the sensor group can reflect the test status in a timely manner, but data fluctuations often occur during the test. These data collection points will affect the detection accuracy. Therefore, the speed and torque data collected by the first speed and torque sensor 4 are judged for deviation. If the deviation between the actual collected data and the theoretical data at a certain moment is greater than the deviation limit, the speed regulating motor 1 and the loading motor 12 are adjusted in time to achieve dynamic control of the data and improve the accuracy of the detection results.

[0044] Two temperature sensors 10 are arranged on the test swing angle wheel side reducer 7 and the test swing angle wheel side reducer 15 respectively, and the two temperature sensors 10 are arranged on the high-speed stage and the low-speed stage of the test swing angle wheel side reducer 7 and the test swing angle wheel side reducer 15 respectively. Specifically, the space inside the cavity of the high-speed stage and the low-speed stage of the wheel side reducer is small, so that the temperature difference of the cavity of the high-speed stage and the low-speed stage is large. By arranging the temperature sensor 10 on the high-speed stage and the low-speed stage of the wheel side reducer respectively, the oil temperature in the cavity of the high-speed stage and the low-speed stage can be monitored, and the occurrence of oil seal damage, oil leakage, gear gluing and the like due to overheating of the oil temperature during the test can be prevented.

[0045] In some embodiments, the test swing angle wheel side reducer 7 and the test swing angle wheel side reducer 15 have the same structure and specifications, and include the same internal gears, bearings and connecting pieces. By connecting the second telescopic transmission shaft 19 symmetrically distributed, the test swing angle wheel side reducer 7 and the test swing angle wheel side reducer 15 are realized to rotate synchronously and at the same speed.

[0046] In other embodiments, the telescopic amount of the second telescopic transmission shaft 19 is suitable for the test swing angle wheel side reducer 7 and the test swing angle wheel side reducer 15 to rotate to the maximum angular position, the stroke of the driving member 20 and the length of the slide rail assembly 23 are suitable for the sliding plate 22 to make reciprocating motion. Specifically, during the design of the test bench, appropriate second telescopic transmission shaft 19, driving member 20 and slide rail assembly 23 need to be selected. The telescopic amount of the second telescopic transmission shaft 19 can satisfy the first limit position and the second limit position (such as shown in Figure 4 and Figure 5 Since one end of each of the two second telescopic transmission shafts 19 is connected with the bearing seat 16, in order to ensure that the telescopic amount of the second telescopic transmission shaft 19 meets the condition, the bearing seat 16 should be able to make reciprocating motion on the slide rail 2302, so the stroke of the driving member 20 and the length of the slide rail 2302 should both meet the condition that the bearing seat 16 makes reciprocating motion, thereby ensuring that the test swing angle wheel side reducer 7 and the test swing angle wheel side reducer 15 can rotate to the limit position.

[0047] The second aspect of the present application provides a test method of a swing angle wheel side reducer performance test bench, which is completed based on the swing angle wheel side reducer performance test bench of any one of the above embodiments, and includes the following steps:

[0048] S1, starting the speed regulation motor 1 to perform test running, and ensuring normal operation when the rotation speed reaches the rated rotation speed;

[0049] S2, the driving member 20 adopts a relay or a magnetic induction or an encoder to control the stroke, and simulates the angular velocity under the operating condition of the test swing angle wheel side reducer 7.

[0050] S3, sequentially carrying out no-load test, efficiency test, temperature rise test, overload test and overspeed test, the no-load test refers to testing the test swing angle type wheel side reducer 7 according to the rated speed of the test swing angle type wheel side reducer 7 without load, observing whether there is obvious abnormal sound in the test process, usually rotating for 1 hour in forward and reverse directions, the efficiency test refers to loading step by step according to 25%, 50%, 75% and 100% of the rated power, the time is usually 60 min, the oil temperature is controlled below 90 DEG C, the temperature rise test is carried out under the rated power, the test time has no limit, the requirement is that the temperature rise in 1 hour cannot change more than 2 DEG C, that is, reaching thermal equilibrium, the overload test refers to testing according to 125% of the rated load, the overspeed test refers to testing according to 130% of the rated speed, of course, when testing, the oil temperature cannot exceed 90 DEG C, the reducer runs smoothly without obvious abnormal sound, the reducer noise value is lower than 80 dB (A), the connecting pieces and fasteners are not allowed to be loose, and there is no oil leakage phenomenon at each sealing and jointing position;

[0051] S4, the rotational speed and torque of the first rotational speed torque sensor 4 are monitored in real time, and when the relative error is greater than a set value, the speed regulating motor 1 and the loading motor 12 are adjusted in real time;

[0052] S5, the relevant data are recorded and saved at regular time during the stage test, the torque value collected by the first rotational speed torque sensor 4 is T1, the rotational speed value is n1, the torque value collected by the second rotational speed torque sensor 14 is T2, and the rotational speed value is n2, more than or equal to three groups of data are collected each time, the average value of the collected data is taken, and the working efficiency of the test swing angle type wheel side reducer 7 is obtained as follows:

[0053]

[0054] S6, the sensor group collects the acceleration response signal of the test swing angle type wheel side reducer 7, analyzes the signal data, obtains the frequency domain response signal of the test swing angle type wheel side reducer 7, and completes the dynamic performance quality evaluation of the test swing angle type wheel side reducer 7;

[0055] S7, the sensor group collects the lubricating oil temperature of the test swing angle type wheel side reducer 7, and obtains the trend graph of the lubricating oil temperature affected by time and power factor.

[0056] It has to be noted that, in the present document, the terms "first", "second", etc. merely serve the purpose of distinguishing between two entities or operations, without necessarily requiring or implying any actual relationship or order between these entities or operations. Moreover, the terms "comprising", "containing" or any other transitional term, do not exclude other elements or steps, but merely specify the presence of the stated elements or steps. The term "consisting of" is intended to mean an exclusive listing, such that the process, method, article, or apparatus includes only the listed elements, and no other elements. The term "including" or "comprising" an element is intended to mean that there is no exclusion of further unspecified elements which can be additional to or alternatively to the listed elements.

[0057] The foregoing is considered as illustrative only of the principles of the application. Numerous modifications and changes will readily occur to those skilled in the art, and the generic principles defined herein can be applied to other embodiments without departing from the spirit or scope of the application. Accordingly, the scope of the application is intended to be defined only as set forth in the claims.

Claims

1. A performance test bench for a swing-arm wheel-reduction gear, characterized in that it comprises: The test device comprises: a sliding mechanism comprising a sliding plate (22) and a sliding rail assembly (23), the sliding plate (22) being adapted to move along the extension direction of the sliding rail assembly (23); a driving member (20) connected with the sliding plate (22); a test assembly comprising a test swing-angle hub reducer (7), a test swing-angle hub reducer (15), a first rotation speed and torque sensor (4), a second rotation speed and torque sensor (14), a speed regulating motor (1) and a loading motor (12), the test swing-angle hub reducer (7) and the test swing-angle hub reducer (15) being symmetrically arranged on both sides of the sliding mechanism and connected with the sliding plate (22) through a second telescopic transmission shaft (19), and the high-speed input ends of the test swing-angle hub reducer (7) and the test swing-angle hub reducer (15) being connected with the first rotation speed and torque sensor (4) and the second rotation speed and torque sensor (14) through a first telescopic transmission shaft (6), respectively, the speed regulating motor (1) being connected with the first rotation speed and torque sensor (4), and the loading motor (12) being connected with the second rotation speed and torque sensor (14), the driving member (20) driving the sliding plate (22) to move along the extension direction of the sliding rail assembly (23) and driving the second telescopic transmission shaft (19) to rotate so as to drive the planetary gear of the test swing-angle hub reducer (7) and the test swing-angle hub reducer (15) to rotate; a sensor group arranged on the test swing-angle hub reducer (7) and the test swing-angle hub reducer (15) to monitor the performance parameters of the test swing-angle hub reducer (7) and the test swing-angle hub reducer (15).

2. The performance test bench for swing-arm hub reduction according to claim 1, characterized in that, The sliding plate (22) comprises a connecting plate (2202) and an ear seat (2201), the upper surface of the connecting plate (2202) is provided with a bearing seat (16), the second telescopic transmission shaft (19) is connected with the bearing seat (16), and the ear seat (2201) is arranged on the upper surface of the sliding plate (22), and the driving member (20) is connected with the ear seat (2201).

3. The performance test bench for swing-arm hub reduction according to claim 2, characterized in that, The sliding rail assembly (23) comprises a sliding rail (2302) and a sliding block (2303), the sliding block (2303) is adapted to move along the extension direction of the sliding rail (2302), and the sliding plate (22) is connected with the sliding block (2303).

4. The performance test bench for swing-arm hub reduction according to claim 1, characterized in that, The sensor group comprises a high-speed vibration acceleration sensor (9), a temperature sensor (10) and a planetary gear vibration acceleration sensor (11) to monitor the vibration data of the test swing-angle hub reducer (7) and the test swing-angle hub reducer (15) and the temperature of the lubricating oil in the planetary gear thereof, respectively. The specifications and installation positions of the temperature sensors (10) arranged in the test swing-angle hub reducer (7) and the test swing-angle hub reducer (15) are the same, and the temperature, grade and oil amount of the lubricating oil used by the test swing-angle hub reducer (7) and the test swing-angle hub reducer (15) are the same.

5. The performance test bench for swing-arm hub reduction according to claim 4, characterized in that, Two temperature sensors (10) are arranged on the test swing angle wheel hub reducer (7) and the test swing angle wheel hub reducer (15) respectively, and the two temperature sensors (10) are arranged on the high-speed stage and the low-speed stage of the test swing angle wheel hub reducer (7) and the test swing angle wheel hub reducer (15) respectively.

6. The performance test bench for swing-arm hub reduction according to claim 1, wherein, The test swing angle wheel hub reducer (7) and the test swing angle wheel hub reducer (15) are the same in structure and specification, and comprise the same internal gear, bearing and connecting piece.

7. The performance test bench for swing-arm hub reduction according to claim 1, wherein, The telescopic amount of the second telescopic transmission shaft (19) is suitable for the test swing angle wheel hub reducer (7) and the test swing angle wheel hub reducer (15) to rotate to the maximum angle position. The stroke of the driving member (20) and the length of the slide rail assembly (23) are suitable for the reciprocating motion of the sliding plate (22).

8. A test method for a swing-arm wheel-reduction performance test bench, based on the swing-arm wheel-reduction performance test bench according to any one of claims 1 to 7, characterized in that, The method comprises the following steps: S1, starting the speed regulation motor (1) for trial operation, and ensuring normal operation when the speed reaches the rated speed; S2, the driving member (20) adopts a relay or a magnetic induction or an encoder to control the stroke, and simulates the angular speed under the operating condition of the test swing angle wheel hub reducer (7); S3, sequentially performing no-load test, efficiency test, temperature rise test, overload test and overspeed test; S4, monitoring the speed and torque of the first speed and torque sensor (4) in real time, and adjusting the speed regulation motor (1) and the loading motor (12) in real time when the relative error is greater than the set value; S5, recording and saving the relevant data in the stage test process, the torque value collected by the first speed and torque sensor (4) is T1, the speed value is n1, the torque value collected by the second speed and torque sensor (14) is T2, and the speed value is n2, more than or equal to three groups of data are collected each time, and the average value of the collected data is taken to obtain the working efficiency of the test swing angle wheel hub reducer (7): S6, the sensor group collects the acceleration response signal of the test swing angle wheel hub reducer (7), analyzes the signal data, obtains the frequency domain response signal of the test swing angle wheel hub reducer (7), and completes the dynamic performance quality evaluation of the test swing angle wheel hub reducer (7); S7, the sensor group collects the lubricating oil temperature of the test swing angle wheel hub reducer (7), and obtains a trend chart of the lubricating oil temperature affected by time and power factor.

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