An aircraft landing gear turning loading test device

Abstract

This invention provides an aircraft landing gear turning load test device. The device includes a frame and a turning base located at the bottom of the frame. The turning base has a detachable axle-fitting mounting seat corresponding to the landing gear's wheel axle. A column slide rail passes through a basket and connects to the frame. A screw motor's drive end is connected to the basket to drive the basket to vertically rise and fall along the column slide rail. The bottom of the basket has a detachable main slewing shaft support corresponding to the landing gear's main slewing shaft and a detachable strut support corresponding to the landing gear's struts. Based on the landing gear model to be tested, the corresponding axle-fitting mounting seat, main slewing shaft support, and strut support are selected. The axle-fitting mounting seat is installed on the turning base, and the main slewing shaft support and strut support are installed on the bottom of the basket. Then, based on the height of the landing gear to be tested, the screw motor is activated to raise and lower the basket to a suitable height, allowing turning load tests to be performed on different landing gears.

Description

Technical Field

[0001] This utility model belongs to the field of aircraft landing gear testing technology, specifically relating to an aircraft landing gear turning loading test device. Background Technology

[0002] The cornering load test of aircraft landing gear is an important verification test before an aircraft enters service. Its purpose is to verify that the landing gear's structural integrity meets design requirements when subjected to the enormous loads and torsional loads generated by ground cornering, ensuring flight safety. Figure 1 As shown, current turning load tests are typically conducted on specialized structural loading test equipment. The landing gear specimen 8 to be tested is mounted on a rigid device 01, which includes a wheel axle mounting base 9 simulating fuselage connection points such as the landing gear wheel axle, a main slewing shaft support 6 simulating the landing gear main slewing shaft, and a strut support 7 simulating the landing gear struts. The landing gear specimen 8 is rotated via a turning base 10 to simulate the landing gear load during aircraft turning, thus assessing the structural strength and fatigue life of the landing gear under design loads. Because different aircraft landing gears vary significantly in size and configuration, different rigid devices need to be fabricated for matching, resulting in limited versatility of the test equipment. Furthermore, the cost of manufacturing multiple different rigid devices is high, and they require considerable storage space. Utility Model Content

[0003] In view of this, the purpose of this utility model is to provide an aircraft landing gear turning load test device that can be matched with different models of aircraft landing gear to carry out turning load tests, and has the advantage of strong versatility.

[0004] The aircraft landing gear turning loading test device provided by this utility model includes a frame and a turning base disposed at the bottom of the frame. The turning base is provided with a wheel axle mating mounting seat corresponding to the wheel axle of the landing gear. It also includes a basket, a lead screw motor, and a column slide rail. The lead screw motor is disposed on the frame, and the column slide rail passes through the basket and is connected to the frame. The drive end of the lead screw motor is connected to the basket, driving the basket to move vertically up and down along the column slide rail. The bottom surface of the basket is provided with a main rotation shaft support corresponding to the main rotation shaft of the landing gear and a strut support corresponding to the strut of the landing gear. The main rotation shaft support is detachably connected to the basket. The strut support is detachably connected to the basket. The wheel axle mating mounting seat is detachably connected to the turning base.

[0005] When designing a turning loading device for different aircraft landing gears, select the corresponding wheel axle mounting bracket, main slewing shaft support, and strut support according to the model of the landing gear under test. Install the wheel axle mounting bracket onto the turning base at the bottom of the frame, and install the main slewing shaft support and strut support onto the bottom of the basket. Then, based on the height of the landing gear under test, start the screw motor to raise and lower the basket to a suitable height. Only one device is needed to perform turning loading tests on different landing gears.

[0006] Furthermore, the column slide rails are symmetrically distributed around the lead screw motor, ensuring that the suspended basket rises and falls smoothly along the column slide rails without deviating.

[0007] Furthermore, the drive end of the lead screw motor passes through the top surface of the frame and connects to the basket, and the apex of the column slide rail is located at the top of the frame. This design allows the entire internal space of the frame to be used for installing the landing gear under test, minimizing its size and reducing manufacturing costs.

[0008] Furthermore, several detachable counterweights are symmetrically distributed at the top of the basket. The specifications and quantity of these counterweights can be adjusted to match the load capacity of different aircraft landing gear models.

[0009] Furthermore, a displacement sensor is provided between the basket and the frame to check whether the distance between the basket and the frame is suitable for the size of the landing gear to be tested.

[0010] Furthermore, the turning base is equipped with an angle sensor to check whether the landing gear under test is installed in place.

[0011] This utility model has the following beneficial effects:

[0012] The aircraft landing gear turning load test device provided by this utility model can be adapted to different models and specifications of aircraft landing gear for turning load tests. It has strong versatility, avoids the need to manufacture multiple different test devices, reduces test costs, and reduces the space required to store test devices. Attached Figure Description

[0013] Figure 1 This is a schematic diagram of a conventional aircraft landing gear turning load test device.

[0014] Figure 2 This is an overall schematic diagram of the aircraft landing gear turning loading test device provided in some embodiments of this utility model.

[0015] Figure 3 This is a front view of an aircraft landing gear turning loading test device provided in some embodiments of this utility model.

[0016] Figure 4This is a left view of an aircraft landing gear turning loading test device provided in some embodiments of this utility model.

[0017] Figure 5 This is a partial schematic diagram of an aircraft landing gear turning loading test device provided in some embodiments of this utility model.

[0018] Explanation of reference numerals in the attached figures:

[0019] 01 Rigid device;

[0020] 1. Frame, 2. Screw motor, 3. Suspended basket, 4. Column slide rail, 5. Column slide rail mounting base, 6. Main slewing shaft support, 7. Support rod support, 8. Landing gear test piece, 9. Wheel and axle mating mounting base, 10. Turning base, 11. Displacement sensor. Detailed Implementation

[0021] To facilitate understanding of this utility model, a more comprehensive description of it will be provided below with reference to the accompanying drawings. The drawings show preferred embodiments of this utility model. It should be noted that, in the description of this utility model, unless otherwise explicitly specified and limited, the terms "set," "connect," and "install" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection. Those skilled in the art can understand the specific meaning of the above terms in this utility model according to the specific circumstances. When an element is referred to as being "fixed to" another element, it can be directly on the other element or there may be an intermediate element. When an element is considered to be "connected" to another element, it can be directly connected to the other element or there may be an intermediate element present. Conversely, when an element is referred to as being "directly on" another element, there is no intermediate element. In the description of this utility model, terms such as "inner," "outer," "upper," "lower," "top," and "bottom," which indicate direction or positional relationships, are based on the direction or positional relationships shown in the drawings. This is merely for ease of description and does not indicate or imply that the device or element must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of this utility model.

[0022] like Figure 2-5As shown, this utility model provides an aircraft landing gear turning loading test device, including a frame 1, a lead screw motor 2, a basket 3, column slide rails 4, and a turning base 10 set at the bottom of the frame 1. The turning base 10 is provided with axle mating mounting seats 9 corresponding to the wheel axles of the landing gear. The lead screw motor 2 is located on the top surface of the frame 1. Four column slide rails 4 pass through the basket 3 and are connected to the frame 1 through column slide rail mounting seats 5 near the four columns of the frame 1. The apex of the column slide rails 4 is located at the top of the frame 1 and is symmetrically distributed with the lead screw motor 2 as the center. The drive of the lead screw motor 2... The moving end passes through the top surface of the frame 1 and connects to the basket 3. Driven by the screw motor 2, the basket 3 rises and falls vertically along the column slide rail 4. Several detachable counterweights are symmetrically distributed on the top of the basket 3. The bottom surface of the basket 3 is provided with a main slewing shaft support 6 corresponding to the main slewing shaft of the landing gear and a strut support 7 corresponding to the strut of the landing gear. The main slewing shaft support 6 is detachably connected to the basket 3, the strut support 7 is detachably connected to the basket 3, and the wheel axle mating mounting seat 9 is detachably connected to the turning base. Optionally, a displacement sensor 11 is provided between the basket 3 and the frame 1, and an angle sensor is provided on the turning base 10.

[0023] According to the model of the landing gear test piece 8, select the corresponding wheel axle mounting base 9, main slewing shaft support 6 and strut support 7. Install the wheel axle mounting base 9 onto the turning base 10, and install the main slewing shaft support 6 and strut support 7 onto the bottom surface of the basket 3. Then, according to the height of the landing gear to be tested, start the screw motor 2 to raise and lower the basket 3 to a height suitable for the landing gear to be tested, so that turning load tests can be performed on different landing gears to be tested.

[0024] The technical features of the above embodiments can be combined in any way. For the sake of brevity, 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.

Claims

1. An aircraft landing gear corner loading test device, comprising a jig (1) and a corner base (10) arranged at the bottom of the jig (1), wherein the corner base (10) is provided with an axle matching mounting base (9) corresponding to the axle of the wheel of the landing gear, characterized in that, It also includes a basket (3), a lead screw motor (2), and a column slide rail (4). The lead screw motor (2) is located on the frame (1). The column slide rail (4) passes through the basket (3) and is connected to the frame (1). The drive end of the lead screw motor (2) is connected to the basket (3) to drive the basket (3) to rise and fall vertically along the column slide rail (4). The bottom surface of the basket (3) is provided with a main slewing shaft support (6) corresponding to the main slewing shaft of the landing gear and a strut support (7) corresponding to the strut of the landing gear. The main slewing shaft support (6) is detachably connected to the basket (3). The strut support (7) is detachably connected to the basket (3). The wheel axle mating mounting seat (9) is detachably connected to the turning base.

2. The aircraft landing gear turning loading test device according to claim 1, characterized in that, The column slide rail (4) is symmetrically distributed around the lead screw motor (2).

3. The aircraft landing gear turning loading test device according to claim 1, characterized in that, The drive end of the lead screw motor (2) passes through the top surface of the frame (1) and is connected to the basket (3). The apex of the column slide rail (4) is located at the top of the frame (1).

4. The aircraft landing gear turning loading test device according to claim 1, characterized in that, The top of the suspended basket (3) has several detachable counterweights symmetrically distributed.

5. The aircraft landing gear turning loading test device according to claim 1, characterized in that, A displacement sensor (11) is provided between the suspended basket (3) and the frame (1).

6. The aircraft landing gear turning loading test apparatus according to claim 1, characterized in that, An angle sensor is provided on the turning base (10).

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