Aviation tail thrust clutch system lubrication and cooling performance test verification system

Abstract

The present invention provides a lubrication and cooling performance test verification system for an aviation tail thrust clutch system, including a motor drive module, a lubrication and control module, a flow measurement module and a temperature measurement module, which are used to test an aviation wet clutch to be tested. The present invention can regulate different speeds, different loads, different working states and flow inputs, measure the flow of incoming and returning lubricating oil, measure the return oil temperature, so as to conduct comparative tests, etc., and also conduct comparative analysis with simulation results to verify the correctness of the simulation method; the lubrication design is based on axial oil supply, considering the lubrication of the entire system including internal and external spline pairs, multi-plate friction pairs, and bearings, which can ensure that key components are lubricated, which is closer to actual needs, and is designed as a circulating oil circuit, which can reduce oil waste during the test process and save costs. Therefore, it provides better test conditions for the study of lubrication and cooling performance of aviation tail thrust clutch systems.

Description

Technical Field

[0001] The invention relates to the technical field of aviation performance testing, and in particular to a lubrication and cooling performance testing and verification system for an aviation tail thrust clutch system. Background Art

[0002] The friction clutch has high power transmission and high speed, and has become the core component of the high-power active control tail thrust transmission system in aviation. In the helicopter's speed transmission system, the use of friction clutch can also reduce the helicopter's flight noise, improve the maneuverability, increase the endurance, and ensure the safety and reliability of flight. At present, most helicopter speed transmission systems use the engagement and separation of friction clutches to achieve speed change output. The power between the input shaft and the output shaft is transmitted through the friction pair formed by several pairs of steel plates and friction plates. The friction clutch transmits power through friction torque during operation. The relative sliding of the master and slave ends of the friction pair will generate a lot of heat and be absorbed by the friction pair. If the heat cannot be taken away by the cooling system in time, it will cause the temperature of the dual steel plate and the friction plate to be too high and the stress to be too large, causing the dual steel plate to be warped by heat, and the friction plate material to wear abnormally or even fall off, and other friction pair failure phenomena, which have a huge impact on the working performance of the entire system. For the problems of heat dissipation difficulties and reduced cooling performance caused by insufficient lubrication of the tail thrust clutch system under high power conditions, it is necessary to design a suitable lubrication scheme and verify it through lubrication and cooling tests on the test platform, so as to transform the tail thrust clutch system and improve the system performance. Summary of the invention

[0003] The purpose of the present invention is to address the deficiencies in the above-mentioned background technology and to provide a verification system that can test the lubrication and cooling performance of an aviation wet clutch system at different speeds, different output powers, and different engagement times, perform flow measurement and temperature measurement on the system, and compare and analyze the flow and temperature changes measured in the test with the simulation results.

[0004] In order to achieve the above-mentioned object, the present invention provides an aviation tail thrust clutch system lubrication and cooling performance test verification system, including a motor drive module, a lubrication and control module, a flow measurement module and a temperature measurement module, for testing an aviation wet clutch to be tested;

[0005] The motor drive module includes a drive motor, a load motor, a coupling and a speed torque sensor, wherein the drive motor is connected to the corresponding speed torque sensor and the input shaft of the aviation wet clutch to be tested through a corresponding coupling, and the load motor is connected to the corresponding speed torque sensor and the output shaft of the aviation wet clutch to be tested through a corresponding coupling;

[0006] The lubrication and control module includes a hydraulic station, an external oil circuit, a rotary oil feed assembly and an axial oil circuit, the axial oil circuit includes a first internal oil circuit and a second internal oil circuit provided on the output shaft, the hydraulic station is connected to the rotary oil feed assembly through the external oil circuit, the rotary oil feed assembly is connected to the first internal oil circuit and the second internal oil circuit of the output shaft respectively, the lubricating oil in the first internal oil circuit is released through the first oil outlet holes arranged in a row of external splines of the output shaft to lubricate the multi-plate friction pair and the internal and external spline pair of the aviation wet clutch to be tested, the lubricating oil in the second internal oil circuit is released through the second oil outlet hole of the output shaft to lubricate the internal bearing and enter the piston cavity of the aviation wet clutch to be tested, push the piston in the piston cavity to move, and make the dual steel plate engage with the friction plate;

[0007] The flow measurement module includes a plurality of flow meters, which are arranged on the external oil circuit and are used to measure the input and output flows;

[0008] The temperature measurement module includes a plurality of temperature sensors, and the temperature sensors are used to measure the lubricating oil temperature of the aviation wet clutch to be tested.

[0009] Furthermore, the motor drive module also includes a base, the drive motor, the load motor, and the speed torque sensor are all supported by a bracket, and the bracket is connected to the base by bolts, and the installation position can be adjusted.

[0010] Furthermore, the rotary lubricating oil feeding assembly includes a stator and a rotor, the stator is fixedly arranged, the rotor is sleeved on the output shaft and rotates synchronously with the output shaft, the rotor is rotationally connected to the stator, the stator is provided with an oil filling hole, and the rotor is provided with a through hole inside for connecting the corresponding oil filling hole with the first internal oil circuit or the second internal oil circuit.

[0011] Furthermore, a sealing ring is provided at the gap between the rotor and the stator, and at the gap between the rotor and the output shaft.

[0012] Furthermore, the output shaft includes an inner shaft, an intermediate shaft and an outer shaft, the outer surfaces of the inner shaft and the intermediate shaft are provided with oil grooves distributed along the axial direction, the oil grooves on the intermediate shaft and the inner surface of the outer shaft constitute the first internal oil circuit, and the oil grooves on the inner shaft and the inner surface of the intermediate shaft constitute the second internal oil circuit.

[0013] Furthermore, the inner shaft, the intermediate shaft and the outer shaft of the output shaft are axially positioned by corresponding shaft shoulders and radially positioned by bolts.

[0014] Furthermore, a first bearing is arranged between the inner shaft and the housing of the aviation wet clutch to be tested, the input shaft is connected to a second bearing, the outer shaft is connected to a third bearing, the bearing seats of the second bearing and the third bearing are opened and equipped with bearing nozzles, and the bearing nozzles are connected to the hydraulic station through the external oil circuit.

[0015] Furthermore, the lubrication and control module also includes a collecting box, which is arranged outside the aviation wet clutch to be tested and is used to collect lubricating oil. An oil return hole is opened at the bottom of the collecting box, and the oil return hole is connected to the external oil circuit; an oil filter is also arranged at the position of the oil return hole.

[0016] Furthermore, the flow meter is arranged on the external oil circuit connected to the two oil filling holes of the rotary lubricating oil feeding assembly, and is arranged on the external oil circuit connected to the oil return hole.

[0017] Furthermore, a measuring end of the temperature sensor is inserted into the interior of the collecting box for measuring the temperature of the lubricating oil collected in the collecting box.

[0018] The above scheme of the present invention has the following beneficial effects:

[0019] The aviation tail thrust clutch system lubrication and cooling performance test verification system provided by the present invention can perform regulation and control of different speeds, different loads, different working states and flow inputs, measure the flow of incoming and returning lubricating oil, measure the return oil temperature, perform comparative tests, etc., and also perform comparative analysis with simulation results to verify the correctness of the simulation method;

[0020] The lubrication design of the present invention is based on the axial oil supply to consider the lubrication of the entire system including the internal and external spline pairs, multi-plate friction pairs, and bearings, which can ensure that all key components are lubricated and is closer to actual needs. At the same time, it is designed as a circulating oil circuit, which can reduce the waste of oil during the test and save costs;

[0021] The main components of the present invention are supported on the base by a bracket, and are movable in two directions. At the same time, different specifications of the aviation wet clutch (or other types of clutch) to be tested can be easily replaced, and good position compensation is provided;

[0022] The data in the present invention are basically measured by electronic sensors, which makes the test data more accurate and improves the degree of automation. At the same time, the collection box (which can be made of transparent material) can visually see the internal lubricating oil accumulation, which is convenient for adjusting the input flow rate and the return oil pump power;

[0023] When the present invention is tested, the operation is relatively simple, less manpower is required, and the test task can be completed by manual operation of a single person; the computer control center has the functions of data collection, analysis, start and stop of the test, and clutch working state control, and can realize active control, and the operation is simple, and the flexibility of adjusting the test variables is high, which can meet different test requirements, which provides better test conditions for the study of lubrication and cooling performance of aviation tail thrust clutch system, thereby providing help for researchers to design and improve the structure of the lubrication system;

[0024] Other beneficial effects of the present invention will be described in detail in the subsequent specific implementation section. BRIEF DESCRIPTION OF THE DRAWINGS

[0025] Figure 1 It is a schematic diagram of the overall structure of the present invention;

[0026] Figure 2 It is a schematic diagram of the motor drive module of the present invention;

[0027] Figure 3 It is a schematic diagram of the lubrication and control module of the present invention and the aviation wet clutch to be tested;

[0028] Figure 4 It is a schematic diagram of the connection of the hydraulic station in the lubrication and control module of the present invention;

[0029] Figure 5 It is a schematic diagram of the flow measurement module of the present invention.

[0030] [Description of Reference Numerals]

[0031] 10-motor drive module; 11-drive motor; 12-load motor; 13-coupling; 14-speed torque sensor; 15-base; 16-bracket; 20-lubrication and control module; 21-stator; 22-rotor; 23-oil filling hole; 24-sealing ring; 25-bearing nozzle; 26-collection box; 27-oil return hole; 28-hydraulic station; 30-flow measurement module; 31-flowmeter; 40-temperature measurement module; 41-temperature sensor; 50-aviation wet clutch to be tested; 51-input shaft; 52-output shaft; 53-multi-plate friction pair; 54-piston; 55-inner shaft; 56-intermediate shaft; 57-outer shaft; 58-first bearing; 59-second bearing; 510-third bearing; 60-computer control center. DETAILED DESCRIPTION

[0032] In order to make the technical problems, technical solutions and advantages to be solved by the present invention clearer, the following will be described in detail with reference to the accompanying drawings and specific embodiments. Obviously, the described embodiments are part of the embodiments of the present invention, rather than all of the embodiments. Based on the embodiments in the present invention, all other embodiments obtained by ordinary technicians in this field without making creative work are within the scope of protection of the present invention. In addition, the technical features involved in the different embodiments of the present invention described below can be combined with each other as long as they do not conflict with each other.

[0033] In the description of the present invention, it should be noted that the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer", etc., indicating the orientation or positional relationship, are based on the orientation or positional relationship shown in the drawings, and are only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as limiting the present invention. In addition, the terms "first", "second", and "third" are used for descriptive purposes only, and cannot be understood as indicating or implying relative importance.

[0034] In the description of the present invention, it should be noted that, unless otherwise clearly specified and limited, the terms "installation", "connection" and "connection" should be understood in a broad sense, for example, it can be a locking 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, or it can be the internal communication of two components. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0035] like Figure 1 As shown, an embodiment of the present invention provides an aviation tail thrust clutch system lubrication and cooling performance test verification system. Compared with the currently common automotive clutch lubrication and cooling performance test platform, it has fewer verifiable lubrication and cooling performance influencing factors and does not have the function of systematic lubrication and cooling performance testing. This system can realize system lubrication and cooling performance test verification based on the axial oil supply lubrication method, and comparative study of lubrication and cooling performance under variable lubrication parameters / operating parameters.

[0036] Specifically, the system includes a motor drive module 10, a lubrication and control module 20, a flow measurement module 30 and a temperature measurement module 40. Figure 2As shown, the motor drive module 10 includes a drive motor 11, a load motor 12, an elastic pin-type coupling 13 and a speed torque sensor 14. In this embodiment, the drive motor 11 adjusts the speed (adjustable speed ≥ 4000rpm) through a V20 frequency converter, and the shaft of the drive motor 11 is connected to the speed torque sensor 14, and the speed and torque of the input end are accurately measured through the speed torque sensor 14. The speed torque sensor 14 is connected to the input shaft 51 of the aviation wet clutch 50 to be tested through the coupling 13. At the output shaft 52 of the aviation wet clutch 50 to be tested, the load motor 12 is connected to the output shaft 52 of the aviation wet clutch 50 to be tested using the same coupling 13-speed torque sensor 14-coupling 13 layout. Therefore, a form is formed in which the drive motor 11 is input and the load motor 12 is loaded, and the input and output speeds and torque are measured respectively through the corresponding speed torque sensor 14.

[0037] Among them, the motor drive module 10 also includes a base 15, and the base 15 is in the form of a T-slot, so that the brackets 16 of the drive motor 11, the load motor 12, and the speed torque sensor 14 can be adjusted to a suitable installation position, and then fixed by bolts. It should be noted that the bracket 16 can have different height specifications so that the installation height of the drive motor 11, the load motor 12, and the speed torque sensor 14 is appropriate and remains horizontal during the test. Therefore, in this embodiment, the motor drive module 10 has good flexibility and can be applied to the design of different inputs and outputs and the performance test verification of different wet clutch systems to a certain extent.

[0038] At the same time Figure 3 , Figure 4 As shown, in this embodiment, the lubrication and control module 20 is associated with the aviation wet clutch 50 to be tested, and includes a hydraulic station 28, an external oil circuit (including hydraulic components), a rotary lubricating oil feed assembly, and an axial oil circuit. The lubrication and control module 20 adopts the axial oil circuit oil supply method and is divided into two branches, the first branch is used to lubricate the multi-plate friction pair 53 and the internal and external spline pair of the aviation wet clutch 50 to be tested, and the second branch is used to realize the hydraulic control of the piston 54 and the oil injection lubrication of the internal bearing.

[0039] Specifically, for the first branch, the lubricating oil is input from the rotating lubricating oil feeding assembly to the output shaft 52, and then passes through the first internal oil circuit of the output shaft 52, and is released through the first oil outlet holes arranged in a row of external splines of the output shaft 52, so as to achieve lubrication of the multi-plate friction pair 53 and the internal and external spline pair of the aviation wet clutch 50 to be tested, such as Figure 3 The second branch inputs lubricating oil with a specific pressure, passes through the second internal oil circuit of the output shaft 52, and is finally released from the second oil outlet hole of the output shaft 52, as shown in FIG. Figure 3As shown in the solid line oil circuit B, while lubricating the internal bearing, it can also enter the piston chamber of the aviation wet clutch 50 to be tested, thereby pushing the piston 54 in the piston chamber to move, so that the dual steel plate and the friction plate engage. When the pressure in the piston chamber decreases, the piston 54 can gradually reset under the action of the reset spring, and the dual steel plate and the friction plate disengage. Therefore, the engagement and disengagement working state of the aviation wet clutch 50 to be tested can be controlled.

[0040] As a preferred embodiment, the rotary lubricating oil feeding assembly in this embodiment includes a stator 21 and a rotor 22. Among them, the stator 21 is also fixedly connected to the matching bracket 16 by bolts, and the bracket 16 is fixedly connected to the base 15 by bolts. The rotor 22 is sleeved on the output shaft 52 and rotates synchronously with the output shaft 52. The rotor 22 is rotationally connected to the stator 21. The stator 21 is provided with an oil filling hole 23, and a through hole is provided inside the rotor 22 for connecting the oil filling hole 23 with the first internal oil circuit or the second internal oil circuit of the output shaft 52. It can also be regarded as that an oil chamber is provided inside the rotor 22. During the rotation of the rotor 22, the oil filling hole 23 of the stator 21 inputs lubricating oil, and the lubricating oil enters the oil chamber and then enters the first internal oil circuit or the second internal oil circuit of the output shaft 52.

[0041] In this embodiment, in order to prevent the lubricating oil from leaking from the gap between the rotor 22 and the stator 21, and the gap between the rotor 22 and the output shaft 52, two sets of sealing rings 24 are provided. At the same time, the two sets of sealing rings 24 also seal the gap between the two oil chambers to prevent the flow between them from affecting the test accuracy.

[0042] In this embodiment, in order to avoid machining a narrow and long special-shaped hole oil circuit in the shaft, the output shaft 52 adopts a separate design, including an inner shaft 55, an intermediate shaft 56 and an outer shaft 57, and the outer surfaces of the inner shaft 55 and the intermediate shaft 56 are milled to form oil grooves distributed along the axial direction. Among them, the axial positioning between different shafts from the inside to the outside is performed by corresponding shaft shoulders, and the radial positioning is performed by bolts, so as to ensure the consistency of the internal oil circuit and not change with the rotation. Specifically, the oil groove on the intermediate shaft 56 and the inner surface of the outer shaft 57 form a first internal oil circuit, which is connected to the corresponding oil cavity of the rotor 22 through the oil inlet hole on the outer shaft 57, and is released at the other end through the first oil outlet hole in a row of external splines. The oil groove on the inner shaft 55 and the inner surface of the intermediate shaft 56 form a second internal oil circuit, which is connected to the corresponding oil cavity of the rotor 22 through another oil inlet hole on the outer shaft 57 and the corresponding oil inlet hole on the intermediate shaft 56, and is released at the other end through the second oil outlet hole. The consistency of the internal oil circuit is ensured when the rotor 22, the outer shaft 57, the intermediate shaft 56, and the inner shaft 55 rotate synchronously.

[0043] Among them, a first bearing 58 is arranged between the inner shaft 55 of the output shaft 52 and the housing of the aviation wet clutch 50 to be tested, and part of the lubricating oil released by the second oil outlet can flow into the position of the first bearing 58 for lubrication. At the same time, the input shaft 51 of the aviation wet clutch 50 to be tested is also provided with a second bearing 59, and the outer shaft 57 of the output shaft 52 is provided with a third bearing 510, and the second bearing 59 and the third bearing 510 are both connected to the base 15 through the bracket 16. For the lubrication of the second bearing 59 and the third bearing 510, the bearing nozzle 25 is extended into the inside of the bearing for oil spray lubrication through the hole in the top of the bearing seat.

[0044] In this embodiment, the lubrication and control module 20 also includes a collection box 26, which is arranged outside the entire aviation wet clutch 50 to be tested, and is used to collect the lubricating oil and export it through the oil return hole 27 opened at the bottom of the collection box 26. It should be noted that the lubricating oil of the multi-plate friction pair 53, the internal and external spline pair, the internal bearing, and the piston cavity can all fall into the collection box 26 for collection, and a circulating oil circuit is formed through the collection box 26 and the oil return hole 27, thereby reducing the waste of lubricating oil during the test and saving costs. In addition, considering that impurities such as wear debris of the multi-plate friction pair 53 will exist in the lubricating oil collected by the collection box 26, an oil filter is also provided at the position of the oil return hole 27, so as to filter the lubricating oil to be recovered to avoid affecting the lubrication performance of the next cycle.

[0045] In this embodiment, the hydraulic station 28 is provided with hydraulic components such as an oil pump, a pressure sensor, a hydraulic solenoid valve, and an in-line check valve. The hydraulic station 28 is connected to the oil filling hole 23 on the stator 21 and the bearing nozzles 25 on the second bearing 59 and the third bearing 510 through an external oil circuit. At the same time, the hydraulic station 28 is connected to the oil return hole 27 through an external oil circuit. Figure 4 The solid line in the middle is the oil inlet circuit, and the dotted line is the oil return circuit.

[0046] At the same time Figure 5 As shown, in this embodiment, the flow measurement module 30 includes a plurality of flow meters 31 and flow valves. Taking the DN15 electromagnetic flow meter 31 as an example, the flow meter 31 is arranged on the oil inlet circuit connected to the two oil filling holes 23 of the rotary lubricating oil feed assembly, and is used to measure the flow rate of the lubricating oil input to the aviation wet clutch 50 to be tested. At the same time, a flow meter 31 is also arranged on the return oil circuit, which is used to measure the flow rate of the recovered lubricating oil (output of the aviation wet clutch 50 to be tested). According to the input and output flow rates, the fluidity and lubrication effect of the lubricating oil in the aviation wet clutch 50 to be tested can be evaluated. The flow valve is arranged in the hydraulic station 28, which is used to control the overall input lubricating oil flow rate within a reasonable range.

[0047] In this embodiment, the temperature measurement module 40 mainly measures the temperature through a thermocouple temperature sensor 41. The measuring end of the temperature sensor 41 is inserted into the collection box 26 to measure the temperature of the lubricating oil, thereby measuring the return oil temperature, which indirectly reflects the temperature rise of the multi-plate friction pair 53, a key heat-generating component. Among them, the data of the temperature sensor 41 is transmitted to the data collection module, and then connected to the computer control center 60, reflecting the real-time return oil temperature. In addition, the temperature measurement module 40 also includes a cooling exchanger arranged in the hydraulic station 28, and the cooling exchanger is used to control the temperature of the lubricating oil input to the aviation wet clutch 50 to be tested to be constant.

[0048] As described above, the aviation tail thrust clutch system lubrication and cooling performance test verification system provided in this embodiment can perform regulation at different speeds, different loads, different working conditions and flow inputs, measure the flow of the incoming and returning lubricating oil, measure the return oil temperature to perform comparative tests, etc., and also perform comparative analysis with the simulation results to verify the correctness of the simulation method.

[0049] Based on the same inventive concept, this embodiment also provides a method for testing and verifying the lubrication and cooling performance of an aviation tail thrust clutch system, comprising the following steps:

[0050] S1, according to the test requirements, complete the installation and debugging of various components to ensure that the data transmitted by each sensor is normal and the hydraulic part is sealed intact without oil leakage;

[0051] S2, start the hydraulic station 28, set the low pressure, use the oil pump to deliver the lubricating oil into the aviation wet clutch 50 to be tested, so that the aviation wet clutch 50 to be tested has a certain amount of lubricating oil, and when the collection box has a certain amount of lubricating oil accumulated, start the oil return;

[0052] S3, start the drive motor 11, adjust the frequency converter to reach the speed required for the test, and record the data of each sensor;

[0053] S4, increase the oil pressure of the oil inlet circuit, the piston 54 pushes the dual steel plate to engage with the friction plate, the clutch enters the low-power engagement working state, and after the engagement is completed, gradually enters the high-power torque transmission state, and the data changes of each sensor in the two processes are recorded;

[0054] S5, lowering the oil pressure of the oil inlet circuit and reducing the lubricating oil flow input, so that the clutch enters the disengagement state. After the disengagement is completed, the data changes of each sensor in this stage are recorded;

[0055] S6, changing the speed, torque, flow input size and engagement time, and repeating steps S4 to S5;

[0056] S7, turning off the driving motor 11, waiting for the system to completely stop, processing the sensor data and images obtained from the test, and obtaining the test results.

[0057] The method provided in this embodiment has the same inventive concept and beneficial effects as the aforementioned system, and will not be described in detail here.

[0058] The technical features of the above embodiments may be arbitrarily combined. To make the description concise, not all possible combinations of the technical features in the above embodiments are described. However, as long as there is no contradiction in the combination of these technical features, they should be considered to be within the scope of this specification.

[0059] The above embodiments only express several implementation methods of the present application, and the descriptions thereof are relatively specific and detailed, but they cannot be understood as limiting the scope of the application. It should be pointed out that, for a person of ordinary skill in the art, several variations and improvements can be made without departing from the concept of the present application, and these all belong to the protection scope of the present application. Therefore, the protection scope of the present application shall be subject to the attached claims.

Claims

1. An aviation tail thrust clutch system lubrication and cooling performance test verification system, characterized in that: It includes a motor drive module, a lubrication and control module, a flow measurement module and a temperature measurement module, and is used to test the aviation wet clutch to be tested; The motor drive module includes a drive motor, a load motor, a coupling and a speed torque sensor, wherein the drive motor is connected to the corresponding speed torque sensor and the input shaft of the aviation wet clutch to be tested through a corresponding coupling, and the load motor is connected to the corresponding speed torque sensor and the output shaft of the aviation wet clutch to be tested through a corresponding coupling; The lubrication and control module includes a hydraulic station, an external oil circuit, a rotary oil feed assembly and an axial oil circuit, the axial oil circuit includes a first internal oil circuit and a second internal oil circuit provided on the output shaft, the hydraulic station is connected to the rotary oil feed assembly through the external oil circuit, the rotary oil feed assembly is connected to the first internal oil circuit and the second internal oil circuit of the output shaft respectively, the lubricating oil in the first internal oil circuit is released through the first oil outlet holes arranged in a row of external splines of the output shaft to lubricate the multi-plate friction pair and the internal and external spline pair of the aviation wet clutch to be tested, the lubricating oil in the second internal oil circuit is released through the second oil outlet hole of the output shaft to lubricate the internal bearing and enter the piston cavity of the aviation wet clutch to be tested, push the piston in the piston cavity to move, and make the dual steel plate engage with the friction plate; The flow measurement module includes a plurality of flow meters, which are arranged on the external oil circuit and are used to measure the input and output flows; The temperature measurement module includes a plurality of temperature sensors, and the temperature sensors are used to measure the lubricating oil temperature of the aviation wet clutch to be tested; The rotary lubricating oil feeding assembly comprises a stator and a rotor, wherein the stator is fixedly arranged, the rotor is sleeved on the output shaft and rotates synchronously with the output shaft, the rotor is rotationally connected with the stator, the stator is provided with an oil filling hole, and the rotor is provided with a through hole inside for connecting the corresponding oil filling hole with the first internal oil circuit or the second internal oil circuit; The output shaft comprises an inner shaft, an intermediate shaft and an outer shaft. The outer surfaces of the inner shaft and the intermediate shaft are provided with oil grooves distributed along the axial direction. The oil grooves on the intermediate shaft and the inner surface of the outer shaft constitute the first internal oil circuit. The oil grooves on the intermediate shaft are communicated with the corresponding oil chambers of the rotor through the oil inlet holes on the outer shaft. The oil grooves on the inner shaft and the inner surface of the intermediate shaft constitute the second internal oil circuit. The oil grooves on the inner shaft are communicated with the corresponding oil chambers of the rotor through another oil inlet hole on the outer shaft and the corresponding oil inlet holes on the intermediate shaft. The inner shaft, the intermediate shaft and the outer shaft of the output shaft are axially positioned by corresponding shaft shoulders and radially positioned by bolts.

2. The aviation tail thrust clutch system lubrication and cooling performance test verification system according to claim 1, characterized in that: The motor drive module also includes a base, and the drive motor, the load motor, and the speed torque sensor are all supported by a bracket. The bracket is connected to the base by bolts, and the installation position can be adjusted.

3. The aviation tail thrust clutch system lubrication and cooling performance test verification system according to claim 1, characterized in that: The gap between the rotor and the stator, and the gap between the rotor and the output shaft are both provided with sealing rings.

4. The aviation tail thrust clutch system lubrication and cooling performance test verification system according to claim 1, characterized in that: A first bearing is arranged between the inner shaft and the housing of the aviation wet clutch to be tested, the input shaft is connected to a second bearing, the outer shaft is connected to a third bearing, the bearing seats of the second bearing and the third bearing are opened and provided with bearing nozzles, and the bearing nozzles are connected to the hydraulic station through the external oil circuit.

5. The aviation tail thrust clutch system lubrication and cooling performance test verification system according to claim 1, characterized in that: The lubrication and control module also includes a collection box, which is arranged outside the aviation wet clutch to be tested and is used to collect lubricating oil. An oil return hole is opened at the bottom of the collection box, and the oil return hole is connected to the external oil circuit; an oil filter is also arranged at the position of the oil return hole.

6. The aviation tail thrust clutch system lubrication and cooling performance test verification system according to claim 5, characterized in that: The flow meter is arranged on the external oil circuit connected to the two oil filling holes of the rotary lubricating oil feeding assembly, and is arranged on the external oil circuit connected to the oil return hole.

7. The aviation tail thrust clutch system lubrication and cooling performance test verification system according to claim 5, characterized in that: The measuring end of the temperature sensor is inserted into the interior of the collecting box and is used to measure the temperature of the lubricating oil collected in the collecting box.

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