A kind of horizontal stabilizer actuator friction disc wear performance test device and method

Abstract

This invention discloses a test apparatus and method for the wear performance of a friction disc of a horizontal stabilizer actuator. The upper drive component and lower support component are aligned and installed via guide rods and guide cylinders, and are mounted on a horizontal stabilizer actuator performance test bench. A gearbox, torque meter, and upper friction block are sequentially mounted on the bottom of the upper top plate of the upper drive component. An oil bath and a lower friction block fixedly placed in the oil bath are fixedly mounted on the top of the lower bottom plate of the lower support component. The output shaft of the gearbox is connected to a drive motor, which drives the output shaft of the gearbox to move. A temperature sensor is placed in the oil bath, and a controller is electrically connected to the drive motor, torque meter, and temperature sensor. This invention solves the problems of high test costs, difficulty in conveniently measuring wear, and difficulty in comparing multiple sets of different loads using different test pieces in existing friction disc wear performance tests.

Description

Technical Field

[0001] This invention relates to, but is not limited to, the field of testing equipment and technology, and particularly to a test apparatus and method for the wear performance of a friction disc of a horizontal stabilizer actuator. Background Technology

[0002] Horizontal stabilizer actuators are typically mounted vertically at the tail of an aircraft to drive the horizontal stabilizer's rotation, achieving longitudinal aerodynamic torque trim. The anti-reverse mechanism is mounted on the horizontal stabilizer actuator, and the friction disc is a key component of this mechanism. During operation, the relative rotation between the friction disc and the lead screw flange generates frictional torque. This relative rotation causes wear and alters the friction coefficient of the friction disc. Because horizontal stabilizer actuators have a long service life and are difficult to remove for maintenance, the anti-reverse mechanism must possess excellent wear resistance to meet friction performance requirements throughout its entire lifespan.

[0003] Currently, wear performance tests on the friction disc are usually conducted directly on the products of horizontal stabilizer actuators. However, conducting wear performance tests directly on the products is extremely costly, makes it difficult to conveniently measure the amount of wear, and makes it difficult to replace the test pieces to conduct comparative studies on multiple sets of different loads. Summary of the Invention

[0004] The purpose of this invention is to provide a test apparatus and method for the wear performance of friction discs of horizontal stabilizer actuators, thereby solving the problems of existing wear performance tests for friction discs of horizontal stabilizer actuators, which are conducted directly on the product, resulting in extremely high test costs, difficulty in conveniently measuring wear, and difficulty in replacing test pieces for comparative studies of multiple sets of different loads.

[0005] The technical solution of the present invention: The present invention provides a test device for the wear performance of a friction disc of a horizontal stabilizer actuator, comprising: an upper driving component 1, a lower support component 2, a controller 3, and a temperature sensor 304;

[0006] Among them, the upper drive component 1 and the lower support component 2 are installed in alignment with 4 guide rods 201 and 4 corresponding guide cylinders 110, and the overall installation structure of the upper drive component 1 and the lower support component 2 is installed on the horizontal stabilizer actuator performance test bench by upper and lower pins.

[0007] The upper drive component 1 has a gearbox, a torque meter 109, and an upper friction block 112 installed sequentially from top to bottom on the bottom end face of the upper top plate 104. The lower support component 2 has an oil tank 203 and a lower friction block 202 fixedly placed in the oil tank 203 fixedly installed on the top end face of the lower bottom plate 204. The output shaft 106 of the gearbox of the upper drive component 1 is connected to the drive motor 116, which drives the gearbox output shaft 106 to move, thereby driving the upper friction block 112 to move and place it in the oil tank 203.

[0008] The temperature sensor 304 is placed in the oil sump 204 to record the temperature of the lubricating oil during the test.

[0009] The controller 3 is electrically connected to the drive motor 116, the torque meter 109, and the temperature sensor 304, respectively. During the wear performance test of the friction disc, the controller controls the drive motor 116 to move so as to drive the upper friction block 112 to move downward, thereby applying pressure to the lower friction block 202 and the upper friction block 112. The controller also collects the test data from the torque meter 109 and the temperature sensor 304 in real time, and processes, displays, stores, and exports the test data.

[0010] Optionally, in the wear performance testing device for the friction disc of the horizontal stabilizer actuator as described above, the upper drive component 1 includes: two upper connectors 101, an upper top plate 104, an output shaft 106, an upper coupling 107, a torque meter 109, four guide cylinders 110, a lower coupling 111, an upper friction block 112, a torque meter mounting base 114, a clamping plate 115, a drive motor 116, a lower gearbox housing 118, and an upper gearbox housing 119;

[0011] Among them, two parallel upper connectors 101 are respectively vertically installed on the top end face of the upper top plate 104 by screws. Each of the four corners of the upper top plate 104 is provided with a threaded hole for fixed connection with the top screw of the four guide cylinders 110. The bottom ends of the four guide cylinders 110 are fixedly connected to the four guide rods 201 at the corresponding positions in the lower support component 2.

[0012] The upper gearbox housing 119 and the lower gearbox housing 118 are arranged opposite to each other, and the gearbox is installed in the formed mounting cavity. The upper gearbox housing 119 is installed on the bottom end face of the upper top plate 104 by screws. The output shaft 106 of the gearbox is connected to the torque meter 109 located below it through the upper coupling 107. The torque meter 109 is connected to the upper friction block 112 located below it through the lower coupling 111.

[0013] The torque meter 109 is mounted on the torque meter mounting base 114 by screws. The torque meter mounting base 114 is fixedly connected to the two guide cylinders 110 by a clamping plate 115. The drive motor 116 is mounted on the bottom side of the lower gearbox housing 118 by screws. The input gear assembly 121 and the output shaft of the drive motor 116 inside the gearbox are connected by a pair of internal and external splines. The drive motor 116 has a built-in speed sensor for transmitting the speed of the drive motor to the controller 3.

[0014] Optionally, in the wear performance testing apparatus for the friction disc of the horizontal stabilizer actuator as described above,

[0015] The gearbox is externally connected by screws to an upper gearbox housing 119 and a lower gearbox housing 118 that are arranged opposite to each other.

[0016] The gearbox is equipped with a gearbox input gear assembly 121, a second-stage gear assembly 122, a third-stage gear assembly 123, and an output gear assembly 126 that mesh sequentially. The shafts in each gear assembly are installed inside the gearbox through bearings and mesh with each other to form a three-stage reduction spur gear system.

[0017] The input gear assembly 121 is connected to the output shaft of the drive motor 116. The output shaft 106 in the output gear assembly 126 is configured as a stepped shaft structure. Its upper end is installed in the upper gearbox housing 119 through a deep groove ball bearing 124 and a flat thrust bearing 125, and its lower end is installed in the lower gearbox housing 118 through a flat thrust bearing 125 and a deep groove ball bearing 124.

[0018] Optionally, in the wear performance testing apparatus for the friction disc of the horizontal stabilizer actuator as described above,

[0019] The top end of the upper friction block 112 is configured as a round shaft structure, and its top end is connected to the torque meter 109 through the lower coupling 111.

[0020] The hardness, material, and outer diameter of the lower end face of the upper friction block 112 are set according to the actual situation of the friction disc in the horizontal stabilizer actuator under test.

[0021] Optionally, in the wear performance test device for the friction disc of the horizontal stabilizer actuator as described above, the lower support component 2 includes: 4 guide rods 201, lower friction block 202, oil tank 203, lower base plate 204, and 2 lower joints 205.

[0022] Among them, two parallel lower connectors 205 are respectively vertically installed on the bottom end face of the lower base plate 204 by screws. Each of the four corners of the lower base plate 204 is provided with a threaded hole for fixed connection with the bottom screw of the four guide rods 201 in a one-to-one correspondence. The bottom ends of the four guide cylinders 110 are fixedly connected to the four guide rods 201 at the corresponding positions in the lower support component 2.

[0023] The lower base plate 204 has a square boss in the middle, and there is a mounting groove in the center of the square boss. The mounting groove is used to support the oil tank 203, and the bottom boss of the oil tank 203 is embedded in the mounting groove, and the rotation of the oil tank 203 is restricted.

[0024] The lower friction block 202 is fixedly installed in the oil tank 203, and the temperature sensor 304 is placed in the oil tank 203 to record the temperature of the lubricating oil during the test.

[0025] Optionally, in the wear performance testing apparatus for the friction disc of the horizontal stabilizer actuator as described above,

[0026] A circular boss is provided inside the oil tank 203, and a spline is formed around the circumference of the circular boss; the depth of the oil tank 203 ensures that the tested friction disc is completely immersed in the oil after being filled with lubricating oil and no liquid splashes out of the oil tank.

[0027] The bottom of the lower friction block 202 is provided with an internal spline hole, which can be placed on the spline of the circular boss inside the oil tank 203; and the hardness, material and outer diameter of the upper end face of the lower friction block 202 are set according to the actual situation of the friction disc of the horizontal stabilizer actuator to be tested.

[0028] Optionally, in the wear performance testing apparatus for the friction disc of the horizontal stabilizer actuator as described above,

[0029] The oil tank 203 of the wear performance testing device is a replaceable oil tank, and the inner diameter of the oil tank is set according to the inner diameter of the housing used to install the friction disc in the horizontal stabilizer actuator.

[0030] Optionally, in the wear performance testing apparatus for the friction disc of the horizontal stabilizer actuator as described above,

[0031] In the wear performance testing device, the upper connector 101 in the upper driving component 1 and the lower connector 205 in the lower support component 2 are both configured as double-ear structures.

[0032] Furthermore, the upper connector 101 and the lower connector 205 are configured according to the actual connector size of the horizontal stabilizer actuator.

[0033] Optionally, in the wear performance testing device for the friction disc of the horizontal stabilizer actuator as described above, the controller 3 includes: a data acquisition card 301, an industrial computer 302, and a motor driver 303;

[0034] The data acquisition card 301 is connected to the temperature sensor 304 and the torque meter 109 respectively, and is used to collect the data of the temperature sensor 304 and the torque meter 109 in real time, demodulate them and transmit them to the industrial control computer 302 for data display.

[0035] The motor driver 303 is used to control the drive motor 116 to rotate at the required speed and to feed back the actual speed of the motor to the industrial control computer 302.

[0036] The industrial control computer 302 has built-in control software, which provides a human-machine interface for test personnel to perform various test operations, including: test start, test stop, test interruption, test process recording, test speed and test time setting; it is also used to display the actual test speed curve, the actual test friction torque, and record and export data in real time.

[0037] This invention provides a method for testing the wear performance of a friction disc of a horizontal stabilizer actuator, characterized in that the wear performance testing method is performed using the wear performance testing apparatus for the friction disc of a horizontal stabilizer actuator as described in any one of claims 1 to 9, and the wear performance testing method includes:

[0038] S1: Install the wear performance testing device on the corresponding horizontal stabilizer actuator performance testing platform, and move the crossbeam of the horizontal stabilizer actuator performance testing platform to ensure that there is enough operating space in the wear performance testing device;

[0039] S2: The test friction plate and the test friction moving plate are mounted on the wear performance testing device;

[0040] S3: Pour the actual lubricating oil used by the horizontal stabilizer actuator into the oil sump;

[0041] S4: Operate the horizontal stabilizer actuator performance test bench, put the test friction plate and the test friction moving plate together and apply the corresponding compressive force;

[0042] S5: Control the drive motor through the controller, set the speed and running time of the drive motor, and then start the motor; automatically monitor and record the friction torque of the torque meter and the temperature in the oil sump through the controller;

[0043] S6: After the motor has run for the set time, the motor will stop automatically; operate the horizontal stabilizer actuator performance test bench to disengage the test friction stationary plate and the test friction moving plate;

[0044] S7: Disassemble the test friction stationary plate and the test friction moving plate, and test the amount of wear;

[0045] S8: Change the lubricating oil;

[0046] S9: Replace the test friction stationary plate and the test friction moving plate;

[0047] S10: Repeat the experiments in S3-S5.

[0048] The beneficial effects of this invention: This invention provides a test apparatus and method for the wear performance of a friction disc of a horizontal stabilizer actuator, specifically a highly realistic and easily replaceable wear performance test apparatus for a horizontal stabilizer actuator friction disc. This wear performance test apparatus and corresponding test method can conduct wear performance tests of the friction disc of a horizontal stabilizer actuator under various loads on an existing horizontal stabilizer actuator performance test bench. On the one hand, it can simultaneously simulate the adhesive wear and abrasive wear of the friction disc during the test, thereby providing a highly realistic test of the wear performance of the friction disc under different working conditions. On the other hand, it allows for convenient disassembly of the tested friction disc after the test for friction measurement and replacement with a new tested friction disc. Furthermore, the technical solution of this invention avoids the need to build a new test bench and loading system, thereby reducing test costs and offering advantages such as high realism, easy replacement, and low cost. Specifically, the technical solution of this invention has the following beneficial effects:

[0049] 1) The technical solution of this invention can make the installation method of the friction disc of the tested horizontal stabilizer actuator the same as the actual situation, so as to test the wear performance of the friction disc under the combined action of abrasive wear and adhesive wear;

[0050] 2) The technical solution of this invention allows for easy replacement of the tested friction disc and lubricating oil simply by separating the upper drive component and the lower support component after each test;

[0051] 3) The technical solution of this invention can realize the loading system of the wear performance test bench shared by the horizontal stabilizer actuator, thereby reducing the construction cost of the wear performance test device. Attached Figure Description

[0052] The accompanying drawings are provided to further understand the technical solutions of the present invention and constitute a part of the specification. They are used together with the embodiments of this application to explain the technical solutions of the present invention and do not constitute a limitation on the technical solutions of the present invention.

[0053] Figure 1 A schematic diagram of the structure of a wear performance testing device for a friction disc of a horizontal stabilizer actuator provided in an embodiment of the present invention;

[0054] Figure 2 for Figure 1 A schematic diagram of the upper drive component in the wear performance testing device for the friction disc of the horizontal stabilizer actuator provided in the embodiment shown;

[0055] Figure 3 for Figure 2 A schematic diagram of the gearbox structure in the upper drive component provided in the embodiment shown;

[0056] Figure 4 for Figure 1 A schematic diagram of the lower support component in the wear performance testing device for the friction disc of a horizontal stabilizer actuator provided in the embodiment shown;

[0057] Figure 5 for Figure 4 A schematic diagram of the oil tank structure in the lower support component provided in the embodiment shown;

[0058] Figure 6 for Figure 1 The schematic diagram shows the structure of the controller in the wear performance testing device for the friction disc of the horizontal stabilizer actuator provided in the embodiment shown.

[0059] Explanation of reference numerals in the attached figures:

[0060] 101—Upper connector, 104—Upper top plate, 106—Output shaft, 107—Upper coupling, 109—Torque meter, 110—Guide cylinder, 111—Lower coupling, 112—Upper friction block, 114—Torque meter mounting base, 115—Clamping plate, 116—Motor, 118—Lower gearbox housing, 119—Upper gearbox housing;

[0061] 121—Input gear assembly, 122—Secondary gear assembly, 123—Third-stage gear assembly, 124—Deep groove ball bearing, 125—Flat thrust bearing, 126—Output gear assembly;

[0062] 201—Guide rod, 202—Lower friction block, 203—Oil tank, 204—Lower base plate, 205—Lower connector;

[0063] 301—Data acquisition card, 302—Industrial control computer, 303—Motor driver, 304—Temperature sensor. Detailed Implementation

[0064] To make the objectives, technical solutions, and advantages of the present invention clearer, the embodiments of the present invention will be described in detail below with reference to the accompanying drawings. It should be noted that, unless otherwise specified, the embodiments and features described in this application can be arbitrarily combined with each other.

[0065] As explained in the background section, horizontal stabilizer actuators are typically mounted vertically at the tail of an aircraft to drive the horizontal stabilizer to rotate and achieve longitudinal aerodynamic torque trim. During operation, the anti-reverse mechanism mounted on the horizontal stabilizer experiences wear on its friction disc, leading to a change in the friction coefficient of the disc.

[0066] To address the aforementioned situation, a wear performance test of the friction disc of the horizontal stabilizer actuator is required. A search revealed that horizontal stabilizer actuators are typically installed vertically on aircraft. Patent CN111855184A discloses a friction performance testing device that places the friction disc under test vertically with its axis horizontal, conducting friction performance tests on the vertically placed disc. This is entirely different from the actual aircraft installation method of horizontal stabilizer actuators.

[0067] In actual horizontal stabilizer actuators, the horizontally mounted friction disc causes abrasive particles generated during relative friction to remain within the friction surface, resulting in abrasive wear and adhesive wear. However, in the friction performance testing device described in patent CN111855184A, the abrasive particles generated during the wear process of the friction disc fall off the friction surface under the influence of gravity. Therefore, the wear observed in the test is only adhesive wear, which differs from that in actual products, making it impossible to conduct wear performance tests that accurately reflect the actual product.

[0068] Clearly, the current practice of directly conducting wear performance tests on the friction discs of horizontal stabilizer actuators is extremely costly, makes it difficult to conveniently measure wear, and hinders comparative studies using multiple test pieces under different loads. Therefore, finding a convenient, high-fidelity, and low-cost method for conducting wear performance tests on the friction discs of horizontal stabilizer actuators is a problem urgently needing to be solved by those skilled in the art.

[0069] To address the above-mentioned needs, embodiments of the present invention provide a test apparatus and method for the wear performance of a friction disc of a horizontal stabilizer actuator.

[0070] The present invention provides the following specific embodiments, which can be combined with each other. For the same or similar concepts or processes, they may not be described again in some embodiments.

[0071] Figure 1 This is a schematic diagram of a test device for the wear performance of a friction disc of a horizontal stabilizer actuator, provided as an embodiment of the present invention. Figure 1 As shown in the figure, an embodiment of the present invention provides a test device for the wear performance of a friction disc of a horizontal stabilizer actuator, comprising: an upper drive component 1, a lower support component 2, a controller 3, and a temperature sensor 304.

[0072] like Figure 1As shown, the upper drive component 1 and the lower support component 2 are aligned and installed by four guide rods 201 and four corresponding guide cylinders 110. Then, the overall installation structure of the upper drive component 1 and the lower support component 2 is installed on the horizontal stabilizer actuator performance test bench by the upper and lower pins.

[0073] like Figure 1 As shown, the gearbox, torque meter 109, and upper friction block 112 are sequentially mounted from top to bottom on the bottom end face of the upper top plate 104 of the upper drive component 1. An oil sump 203 and a lower friction block 202 fixedly placed in the oil sump 203 are fixedly mounted on the top end face of the lower bottom plate 204 of the lower support component 2. The output shaft 106 of the gearbox of the upper drive component 1 is connected to a drive motor 116, which drives the gearbox output shaft 106 to move, thereby moving the upper friction block 112 and placing it in the oil sump 203. A temperature sensor 304 is placed in the oil sump 204 to record the temperature of the lubricating oil during the test.

[0074] In this embodiment of the invention, the controller 3 is electrically connected to the drive motor 116, the torque meter 109, and the temperature sensor 304, respectively. During the wear performance test of the friction disc, the controller 3 controls the drive motor 116 to move so as to drive the upper friction block 112 to move downward, thereby applying pressure to the lower friction block 202 and the upper friction block 112. The controller also collects the test data from the torque meter 109 and the temperature sensor 304 in real time, and performs the processing, display, storage, and export of the test data.

[0075] The wear performance testing device for the friction disc of a horizontal stabilizer actuator provided in this invention involves installing the test friction disc horizontally, strictly following the internal installation direction of the horizontal stabilizer actuator to which it is applied. Under this horizontal installation configuration, the abrasive particles generated by the test friction disc during the wear process can remain on the friction surface, just as in actual conditions. This ensures that both adhesive wear during operation and abrasive wear caused by abrasive particles can be simulated throughout the entire wear process, thus realistically reflecting the wear condition of the friction disc during the operation of the horizontal stabilizer actuator.

[0076] like Figure 2 As shown, Figure 1 The illustrated embodiment provides a schematic diagram of the upper drive component in the wear performance testing device for the friction disc of a horizontal stabilizer actuator; as shown. Figure 3 As shown, Figure 2 A schematic diagram of the gearbox structure in the upper drive component provided in the illustrated embodiment.

[0077] In one implementation of an embodiment of the present invention, referring to... Figure 2 and Figure 3As shown, the upper drive component 1 in this embodiment of the invention includes: two upper connectors 101, an upper top plate 104, an output shaft 106, an upper coupling 107, a torque meter 109, four guide cylinders 110, a lower coupling 111, an upper friction block 112, a torque meter mounting base 114, a clamping plate 115, a drive motor 116, a lower gearbox housing 118, and an upper gearbox housing 119.

[0078] The lug shape and bore diameter of the upper connector 101 in the upper drive component 1 are consistent with the upper connector of the horizontal stabilizer actuator used in the friction disc under test, ensuring that the upper drive component 1 can be installed on the upper connector seat of the actuator performance test bench using the upper pin of the horizontal stabilizer actuator. The upper connector 101 is installed on the upper top plate 104 by a suitable number of screws. Each of the four corners of the upper top plate 104 is provided with a threaded hole, through which the top screws of four guide cylinders 110 are screwed, and the bottom ends of these four guide cylinders 110 are fixedly connected to the four guide rods 201 at corresponding positions in the lower support component 2.

[0079] In this embodiment of the invention, the upper gearbox housing 119 and the lower gearbox housing 118 are arranged opposite to each other, and the gearbox is installed in the formed mounting cavity, such as... Figure 3 As shown. The upper gearbox housing 119 is mounted on the bottom end face of the upper top plate 104 with a suitable number of screws. The output shaft 106 of the gearbox is connected to a torque meter 109 located below it via an upper coupling 107. The torque meter 109 is connected to an upper friction block 112 located below it via a lower coupling 111. Additionally, the torque meter 109 is mounted on a torque meter mounting base 114 with screws. The torque meter mounting base 114 is fixedly connected to two guide cylinders 110 via a clamping plate 115. The drive motor 116 is mounted on the bottom side of one side of the lower gearbox housing 118 with screws. The input gear assembly 121 inside the gearbox and the output shaft of the drive motor 116 are connected by a pair of internal and external splines. The drive motor 116 has a built-in speed sensor, which is electrically connected to the controller 3 and can transmit the drive motor speed to the controller 3.

[0080] In specific implementations, such as Figure 2 As shown, in this embodiment of the invention, the top of the upper friction block 112 is configured as a round shaft structure, and its top is connected to the torque meter 109 via the lower coupling 111. In addition, the hardness, material, and outer diameter of the lower end face of the upper friction block 112 are designed according to the actual situation of the friction disc of the horizontal stabilizer actuator under test.

[0081] In this implementation method, such as Figure 3As shown, the gearbox is externally connected to an upper gearbox housing 119 and a lower gearbox housing 118 by screws. Inside the gearbox are sequentially meshed input gear assembly 121, secondary gear assembly 122, tertiary gear assembly 123, and output gear assembly 126. The shafts in each gear assembly are mounted inside the gearbox via bearings, meshing to form a three-stage reduction spur gear system. The input gear assembly 121 is connected to the output shaft of the drive motor 116. The output shaft 106 in the output gear assembly 126 is a stepped shaft structure, with its upper end mounted in the upper gearbox housing 119 via a deep groove ball bearing 124 and a planar thrust bearing 125, and its lower end mounted in the lower gearbox housing 118 via a planar thrust bearing 125 and a deep groove ball bearing 124.

[0082] It should be noted that the deep groove ball bearing 124 used to mount the output shaft 106 is used for rotational support, and the flat thrust bearing 125 is used to withstand the axial thrust during the wear test.

[0083] like Figure 4 As shown, Figure 1 The illustrated embodiment provides a schematic diagram of the lower support component in the wear performance testing device for the friction disc of a horizontal stabilizer actuator; as shown. Figure 5 As shown, Figure 4 The illustrated embodiment provides a schematic diagram of the oil tank structure in the lower support component.

[0084] In one implementation of an embodiment of the present invention, referring to... Figure 4 and Figure 5 As shown, the lower support component 2 in this embodiment of the invention includes: 4 guide rods 201, a lower friction block 202, an oil tank 203, a lower base plate 204, and 2 lower connectors 205.

[0085] It should be noted that, in this embodiment of the invention, the shape and diameter of the lug of the lower connector 201 are consistent with the lower connector of the horizontal stabilizer actuator used on the friction disc to be tested, ensuring that the lower pin of the horizontal stabilizer actuator can be used to install it on the lower connector of the actuator performance test bench.

[0086] like Figure 4 As shown, the installation structure of the lower support component 2 is as follows: two parallel lower connectors 201 are respectively installed on the bottom end face of the lower base plate 204 by screws. Each of the four corners of the lower base plate 204 has a threaded hole for screwing in the guide rod 201. Correspondingly, the lower part of the four guide rods 201 is designed with external threads, which are screwed into the threaded holes at the four corners of the lower base plate 204.

[0087] In this implementation, a square boss is provided in the middle of the lower base plate 204. A mounting groove is located in the center of this square boss. The shape of this mounting groove can be square, pentagonal, or other shapes. The shape of this mounting groove matches the boss structure at the bottom of the oil sump, supporting the oil sump 203. Correspondingly, a boss structure is provided at the bottom of the oil sump 203. This boss structure is also square, pentagonal, or other shapes, and is used to fit into the mounting groove of the central boss of the lower base plate 204, thus ensuring that the oil sump 203 does not rotate. In addition, the lower friction block 202 is fixedly connected to the oil sump 203, and the temperature sensor 304 is placed in the oil sump 203 in a suitable manner to record the temperature of the lubricating oil during the test.

[0088] In specific implementation, a circular boss is provided inside the oil tank 203, and the circumference of the circular boss forms a spline. The depth of the oil tank 203 ensures that after being filled with lubricating oil, the tested friction disc is completely immersed in the oil without any liquid splashing out of the oil tank. Correspondingly, the bottom of the lower friction block 202 is provided with an internal spline hole, which can be inserted into the spline of the circular boss inside the oil tank 203.

[0089] It should be noted that the hardness, material, and outer diameter of the upper end face of the lower friction block 202 in this embodiment of the invention are set according to the actual situation of the friction disc of the horizontal stabilizer actuator to be tested.

[0090] Preferably, the oil tank 203 in this embodiment of the invention is a replaceable oil tank, which can be replaced according to the size of the friction disc under test, thereby conducting wear performance tests on different friction discs under test. In addition, the inner diameter of the oil tank is set according to the inner diameter of the housing used to install the friction disc in the horizontal stabilizer actuator; in practical applications, the inner diameter of the oil tank 203 is consistent with the inner diameter of the anti-reverse housing of the friction disc under test, that is, the anti-reverse housing can be simulated by the size of the oil tank 203, thereby ensuring that the flow of lubricating oil inside the oil tank 203 under the action of rotation and stirring is close to the flow of lubricating oil in the actual horizontal stabilizer actuator, thereby ensuring that the lubrication characteristics and abrasive particle motion characteristics on the friction disc surface in the wear performance test device are close to the actual situation.

[0091] It should be noted that in this embodiment of the invention, the upper connector 101 in the upper drive component 1 and the lower connector 205 in the lower support component 2 are both configured as double-ear structures. The upper connector 101 and the lower connector 205 are set according to the actual connector size of the horizontal stabilizer actuator, thereby ensuring that the wear performance testing device can be installed on the horizontal stabilizer actuator performance test bench in a simulated installation form, thus facilitating loading, avoiding the need to build a new loading system, and greatly reducing the test cost of wear performance testing.

[0092] Figure 6 for Figure 1The schematic diagram shows the structure of the controller in the wear performance testing device for the friction disc of the horizontal stabilizer actuator provided in the embodiment shown.

[0093] In one implementation of this invention, such as Figure 6 As shown, controller 3 mainly includes a data acquisition card 301, an industrial computer 302, and a motor driver 303. In this implementation, the data acquisition card 301 is connected to the temperature sensor 304 and the torque meter 109, respectively, to acquire data from the temperature sensor 304 and the torque meter 109, demodulate the data, and transmit it to the industrial computer 302 for data display. The motor driver 303 can control the drive motor 116 to rotate at the required speed and feed back the actual motor speed to the industrial computer 302. The industrial computer 302 has built-in control software, providing a human-machine interface for test personnel to perform functions such as test start, test stop, test interruption, test process recording, test speed and time setting, display of actual test speed curve, display of actual test friction torque, data recording, and data export.

[0094] It should be noted that, in the wear performance testing device for the friction disc of the horizontal stabilizer actuator provided in this embodiment of the invention, the upper friction test piece (i.e., the upper friction block 112) and the lower friction test piece (the lower friction block 202) can be detached from each other and removed from the testing device. This allows for quick installation and replacement of the friction disc under test, avoiding the complicated disassembly and assembly required when conducting friction disc tests on a real horizontal stabilizer actuator, and greatly shortening the test preparation time.

[0095] The wear performance testing device for the friction disc of a horizontal stabilizer actuator provided in this invention is specifically a highly realistic and easily replaceable wear performance testing device for the friction disc of a horizontal stabilizer actuator. This wear performance testing device and corresponding testing method can conduct wear performance tests of the friction disc of a horizontal stabilizer actuator under various loads on an existing horizontal stabilizer actuator performance testing platform. On the one hand, it can simultaneously simulate the adhesive wear and abrasive wear of the friction disc during the test, thereby testing the wear performance of the friction disc under different working conditions with high realism. On the other hand, it also allows for convenient disassembly of the tested friction disc for friction measurement and replacement with a new tested friction disc after the test. Furthermore, the technical solution of this invention avoids the need to build a new testing platform and loading system, thereby reducing testing costs and offering advantages such as high realism, easy replacement, and low cost. Specifically, the technical solution of this invention has the following beneficial effects:

[0096] 1) The technical solution of this invention can make the installation method of the friction disc of the tested horizontal stabilizer actuator the same as the actual situation, so as to test the wear performance of the friction disc under the combined action of abrasive wear and adhesive wear;

[0097] 2) The technical solution of this invention allows for easy replacement of the tested friction disc and lubricating oil simply by separating the upper drive component and the lower support component after each test;

[0098] 3) The technical solution of this invention can realize the loading system of the wear performance test bench shared by the horizontal stabilizer actuator, thereby reducing the construction cost of the wear performance test device.

[0099] Based on the wear performance testing apparatus for the friction disc of a horizontal stabilizer actuator provided in the above embodiments of the present invention, the present invention also provides a wear performance testing method for the friction disc of a horizontal stabilizer actuator. This wear performance testing method is performed using the wear performance testing apparatus for the friction disc of a horizontal stabilizer actuator provided in any of the above embodiments of the present invention, and includes the following implementation steps:

[0100] S1: Install the upper drive component and lower support component of the wear performance testing device on the actuator performance testing table, and move the crossbeam of the actuator performance testing table to ensure that there is enough operating space in the wear performance testing device;

[0101] S2: The test friction fixed plate (i.e., the lower friction block, used to simulate a ratchet) and the test friction moving plate (i.e., the upper friction block, used to simulate the test friction plate) are installed on the wear performance testing device;

[0102] In the specific implementation of this step, the lead screw flange is always fixedly connected to the friction disc. Under the load condition of the actuator, the lead screw drives the friction disc to rotate. Due to the action of the pawl on the ratchet, the ratchet does not rotate, and relative rotational friction is formed between the friction disc and the ratchet.

[0103] S3: Inject the lubricating oil actually used by the horizontal stabilizer actuator into the oil sump;

[0104] S4: Operate the horizontal stabilizer actuator performance test bench, place the test friction plate and the test friction moving plate together in the oil bath, and apply the required compressive force;

[0105] S5: Set the motor speed and running time on the controller, and then start the motor; at the same time, the controller automatically monitors and records the friction torque of the torque meter and the temperature in the oil sump;

[0106] S6: After the motor has run for the set time, the motor will stop automatically; operate the horizontal stabilizer actuator performance test bench to disengage the test friction stationary plate and the test friction moving plate;

[0107] S7: Disassemble the test friction plate and the test friction moving plate, and use other measuring instruments to detect the wear;

[0108] S8: Change the lubricating oil;

[0109] S9: Replace the test friction stationary plate and the test friction moving plate;

[0110] S10: Repeat the experiments in S3-S5.

[0111] While the embodiments disclosed in this invention are as described above, they are merely illustrative of the embodiments to facilitate understanding of the invention and are not intended to limit the invention. Any person skilled in the art to which this invention pertains may make any modifications and variations in the form and details of the implementation without departing from the spirit and scope disclosed herein; however, the scope of patent protection for this invention shall still be determined by the scope defined in the appended claims.

Claims

1. A test device for the wear performance of a friction disc of a horizontal stabilizer actuator, characterized in that, include: The upper drive component (1), the lower support component (2), the controller (3), and the temperature sensor (304) are included. The upper drive component (1) and the lower support component (2) are aligned and installed through the four guide rods (201) in the lower support component (2) and the four guide cylinders (110) in the corresponding upper drive component (1). The upper and lower pins of the horizontal stabilizer actuator are respectively engaged with the upper connector at the top of the upper drive component (1) and the lower connector at the bottom of the lower support component (2) to install the overall installation structure consisting of the upper drive component (1) and the lower support component (2) on the horizontal stabilizer actuator performance test bench. The upper and lower pins of the horizontal stabilizer actuator respectively install the upper drive component (1) and the lower support component (2) on the upper connector seat and the lower connector seat of the horizontal stabilizer actuator performance test bench. The upper and lower connectors are set according to the actual connector size of the horizontal stabilizer actuator. The upper drive component (1) has a gearbox, a torque meter (109), and an upper friction block (112) installed sequentially from top to bottom on the bottom end face of the upper top plate (104). The lower support component (2) has an oil tank (203) and a lower friction block (202) fixedly placed in the oil tank (203) on the top end face of the lower bottom plate (204). The hardness, material, and outer diameter of the lower end face of the upper friction block (112) are set according to the actual situation of the friction disc in the horizontal stabilizer actuator under test. The lower friction block (202) The hardness, material and outer diameter of the upper end face of 02) are set according to the actual situation of the friction plate of the horizontal stabilizer actuator to be tested; the output shaft (106) of the gearbox of the upper drive component (1) is connected to the drive motor (116) for driving the gearbox output shaft (106) to move through the drive motor (116), thereby driving the torque meter (109) connected to the gearbox output shaft (106) to rotate, and finally driving the upper friction block (112) connected to the torque meter (109) to rotate in the oil sump (203); The temperature sensor (304) is placed in the oil sump (203) to record the temperature of the lubricating oil during the test; The controller (3) is electrically connected to the drive motor (116), torque meter (109) and temperature sensor (304) respectively. During the wear performance test of the friction disc, the controller (3) controls the drive motor (116) to move so as to drive the upper friction block (112) to rotate, thereby forming relative rotational friction between the upper friction block (112) and the lower friction block (202). The controller also collects the test data of the torque meter (109) and temperature sensor (304) in real time and performs test data processing, display, storage and export. During the test, the horizontal stabilizer actuator performance test bench can be used to place the upper friction block (112) and the lower friction block (202) in an oil bath (203) with the two sides in contact, and apply the pressure required for friction.

2. The wear performance testing device for the friction disc of a horizontal stabilizer actuator according to claim 1, characterized in that, The upper drive component (1) includes: two upper connectors (101), an upper top plate (104), an output shaft (106), an upper coupling (107), a torque meter (109), four guide cylinders (110), a lower coupling (111), an upper friction block (112), a torque meter mounting base (114), a clamping plate (115), a drive motor (116), a lower gearbox housing (118), and an upper gearbox housing (119); Among them, two parallel upper connectors (101) are respectively installed vertically on the top end face of the upper top plate (104) by screws. Each of the four corners of the upper top plate (104) is provided with a threaded hole for fixed connection with the top screws of the four guide cylinders (110) in a one-to-one correspondence. The bottom ends of the four guide cylinders (110) are sleeved with the four guide rods (201) in the corresponding positions in the lower support component (2). The mounting cavity formed by the upper gearbox housing (119) and the lower gearbox housing (118) arranged opposite to each other serves as a gearbox. The gear is installed inside the gearbox. The upper gearbox housing (119) is installed on the bottom end face of the upper top plate (104) by screws. The output shaft (106) of the gearbox is connected to the torque meter (109) located below it through the upper coupling (107). The torque meter (109) is connected to the upper friction block (112) located below it through the lower coupling (111). The torque meter (109) is mounted on the torque meter mounting base (114) by screws. The torque meter mounting base (114) is fixedly connected to the two guide cylinders (110) by clamps (115). The drive motor (116) is mounted on the bottom side of the lower gearbox housing (118) by screws. The input gear assembly (121) in the gearbox and the output shaft of the drive motor (116) are connected by a pair of internal and external splines. The drive motor (116) has a built-in speed sensor for uploading the speed of the drive motor to the controller (3).

3. The wear performance testing device for the friction disc of a horizontal stabilizer actuator according to claim 2, characterized in that, The gearbox exterior is formed by connecting an upper gearbox housing (119) and a lower gearbox housing (118) that are arranged opposite to each other by screws; The gearbox is equipped with an input gear assembly (121), a second-stage gear assembly (122), a third-stage gear assembly (123), and an output gear assembly (126) that mesh sequentially. The shafts in each gear assembly are installed inside the gearbox through bearings and mesh with each other to form a three-stage reduction spur gear system. The input gear assembly (121) is connected to the output shaft of the drive motor (116), and the output shaft of the output gear assembly (126) serves as the output shaft (106) of the gearbox and is configured as a stepped shaft structure. Its upper end is installed in the upper gearbox housing (119) through a deep groove ball bearing (124) and a flat thrust bearing (125), and its lower end is installed in the lower gearbox housing (118) through a flat thrust bearing (125) and a deep groove ball bearing (124).

4. The wear performance testing device for the friction disc of a horizontal stabilizer actuator according to claim 2, characterized in that, The top end of the upper friction block (112) is configured as a round shaft structure, and its top end is connected to the torque meter (109) through the lower coupling (111).

5. The wear performance testing device for the friction disc of a horizontal stabilizer actuator according to claim 1, characterized in that, The lower support component (2) includes: 4 guide rods (201), lower friction block (202), oil tank (203), lower base plate (204), and 2 lower connectors (205); Among them, two parallel lower connectors (205) are respectively installed vertically on the bottom end face of the lower base plate (204) by screws. Each of the four corners of the lower base plate (204) is provided with a threaded hole for fixed connection with the bottom screw of the four guide rods (201) in a one-to-one correspondence. The bottom ends of the four guide cylinders (110) are sleeved with the four guide rods (201) in the corresponding positions in the lower support component (2). The bottom plate (204) has a square boss in the middle, and there is a mounting groove in the center of the square boss. The mounting groove is used to support the oil tank (203), and the bottom boss of the oil tank (203) is embedded in the mounting groove, and the rotation of the oil tank (203) is restricted. The lower friction block (202) is fixedly installed in the oil sump (203), and the temperature sensor (304) is placed in the oil sump (203) to record the temperature of the lubricating oil during the test.

6. The wear performance testing device for the friction disc of a horizontal stabilizer actuator according to claim 5, characterized in that, A circular boss is provided in the oil tank (203), and a spline is formed around the circumference of the circular boss; the depth of the oil tank (203) ensures that the tested friction disc is fully immersed in the oil after being filled with lubricating oil and no liquid splashes out of the oil tank. The bottom of the lower friction block (202) is provided with an internal spline hole, which can be placed on the spline of the circular boss inside the oil tank (203).

7. The wear performance testing device for the friction disc of a horizontal stabilizer actuator according to claim 6, characterized in that, The oil tank (203) of the wear performance testing device is configured as a replaceable oil tank, and the inner diameter of the oil tank is set according to the inner diameter of the housing used to install the friction disc in the horizontal stabilizer actuator.

8. The wear performance testing apparatus for the friction disc of a horizontal stabilizer actuator according to any one of claims 1 to 7, characterized in that, In the wear performance testing device, the upper connector (101) in the upper drive component (1) and the lower connector (205) in the lower support component (2) are both configured as double-ear structures.

9. The test apparatus for the wear performance of the friction disc of the horizontal stabilizer actuator according to any one of claims 1 to 7, wherein the controller (3) comprises: Data acquisition card (301), industrial computer (302), and motor driver (303); The data acquisition card (301) is connected to the temperature sensor (304) and the torque meter (109) respectively, and is used to collect the data of the temperature sensor (304) and the torque meter (109) in real time, demodulate it and transmit it to the industrial control computer (302) for data display; The motor driver (303) is used to control the drive motor (116) to rotate at the required speed and to feed back the actual speed of the motor to the industrial control computer (302); The industrial control computer (302) has built-in control software, which provides a human-machine interface for test personnel to perform various test operations, including: test start, test stop, test interruption, test process recording, test speed and test time setting; it is also used to display the actual test speed curve, the actual test friction torque, and the recording and export of data in real time.

10. A method for testing the wear performance of a friction disc in a horizontal stabilizer actuator, characterized in that, The wear performance test method is performed using the wear performance test apparatus for the friction disc of the horizontal stabilizer actuator as described in any one of claims 1 to 9, wherein the wear performance test method includes: S1: Install the wear performance testing device on the corresponding horizontal stabilizer actuator performance testing platform, and move the crossbeam of the horizontal stabilizer actuator performance testing platform to ensure that there is enough operating space in the wear performance testing device; S2: The test friction plate and the test friction moving plate are mounted on the wear performance testing device; S3: Pour the actual lubricating oil used by the horizontal stabilizer actuator into the oil sump; S4: Operate the horizontal stabilizer actuator performance test bench, put the test friction plate and the test friction moving plate together and apply the corresponding compressive force; S5: Control the drive motor through the controller, set the speed and running time of the drive motor, and then drive the motor; automatically monitor and record the friction torque of the torque meter and the temperature in the oil sump through the controller; S6: After the drive motor has run for the set time, the drive motor will stop automatically; manipulate the horizontal stabilizer actuator performance test bench to disengage the test friction stationary plate and the test friction moving plate; S7: Disassemble the test friction stationary plate and the test friction moving plate, and test the amount of wear; S8: Change the lubricating oil; S9: Replace the test friction stationary plate and the test friction moving plate; S10: Repeat the experiments in S3-S5.

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