Universal lateral wheel hub loading device for aircraft landing gear dummy wheel

Abstract

The utility model discloses a general lateral wheel hub loading device for airplane landing gear dummy wheel, including dummy wheel, wheel hub disc connecting piece, single lug connecting piece, double lug connecting piece and actuator who are connected in proper order along the axial direction, the actuator is directly applied load through double lug connecting piece, single lug connecting piece, wheel hub disc connecting piece at the wheel hub of dummy wheel. The force line position of this loading device does not deviate, and lateral force is directly applied to load at the wheel hub position of dummy wheel, and there is no directional component force when the front landing gear dummy wheel lateral working condition is compressed and loaded. The neutral plane of the loading device coincides with the neutral plane of the dummy wheel, ensuring that the load loading point is at the center position of the dummy wheel. The loading device simplifies the lateral device of the dummy wheel, improves the assembly efficiency, and ensures that the size of the partial dummy wheel can be universal to this device.

Description

Technical Field

[0001] This utility model relates to the field of aircraft landing gear technology, specifically to a universal lateral wheel center loading device for aircraft landing gear dummy wheels. Background Technology

[0002] Existing lateral loading force application devices for aircraft landing gear dummy wheels mainly use double-ear connectors at both ends of the positive and negative headings to laterally transfer and connect steel plates. A pin connects the steel plate to the double-ear connector through the center hole, and the tail of the double-ear connector is threaded to a sensor at the front end of the actuator. Loading force is applied in this manner. This device has the following technical problems: ① The dummy wheel suffers from a misaligned force line, is prone to instability, and requires high overall strength. In a real aircraft landing gear wheel, the lateral force point should be at the wheel center. Existing devices use double-ear connectors extending from the outermost edge of the wheel's yaw direction to laterally transfer it to the center of the steel plate. This shifts the original force point on the outer surface of the dummy wheel to the double-ear connectors at both ends of the yaw direction. This shift in yaw direction, by the wheel radius, differs from the actual force distribution on an aircraft landing gear wheel. Furthermore, the dummy wheel is prone to actuator instability when subjected to yaw pressure after the transfer. Since the dummy landing gear wheel is subjected to both yaw and lateral forces at both ends of the yaw direction, all dummy wheels require high overall strength and must not exhibit plastic deformation or compressive stress. ② High precision is required in manufacturing and assembly technology. Even slight errors in the flatness of the double lugs at both ends and the steel plate will cause the applied force to be off-center from the dummy wheel, differing from the actual stress on the aircraft landing gear wheels and resulting in inaccurate test data. It is essential that the neutral surface of the assembled adapter steel plate coincides with the horizontal neutral surface of the dummy wheel to ensure that the transfer load point is at the center of the dummy wheel. ③ The adapter is complicated to assemble, has low installation efficiency and poor versatility. The adapter needs to be equipped with two double lugs and one side adapter steel plate. Because the size of the dummy wheel is different in each test, the double lugs and side adapter plate need to be remade to ensure that they can be connected with the loading point of the dummy wheel. Utility Model Content

[0003] To address all or part of the technical problems in the prior art, this utility model provides a universal lateral wheel center loading device for aircraft landing gear dummy wheels. The force line of this loading device does not deviate, and it directly applies lateral force to the wheel center of the dummy wheel. When the nose landing gear dummy wheel is under lateral compression loading, there is no directional component force. The neutral plane of the loading device coincides with the neutral plane of the dummy wheel, ensuring that the load application point is at the center of the dummy wheel. This loading device simplifies the lateral assembly of the dummy wheel, improves assembly efficiency, and ensures that some dummy wheel sizes can be universally accommodated by this device.

[0004] The technical solution provided by this utility model is as follows: A universal lateral wheel center loading device for aircraft landing gear dummy wheels, characterized by: The device includes a dummy wheel, a wheel center disc connector, a single-ear connector, a double-ear connector, and an actuator connected sequentially along the axial direction. The actuator directly applies a load to the center of the dummy wheel through the double-ear connector, the single-ear connector, and the wheel center disc connector.

[0005] Furthermore, one end of the actuator is connected to a tension / compression sensor, the end of the tension / compression sensor away from the actuator is connected to the double-ear connector, and the other end of the actuator is connected to a mounting plate.

[0006] Furthermore, the wheel center disc connector is provided with a plurality of first screw holes and second screw holes from the outside to the inside. A connecting bolt is provided in the first screw hole. The wheel center disc connector is connected to the dummy wheel through the plurality of connecting bolts. The wheel center disc connector is connected to the single ear connector through the plurality of second screw holes.

[0007] Furthermore, the single-ear connector includes a base and a connecting plate. The base and the connecting plate form a T-shaped structure. The connecting plate is provided with a second through hole. The base is provided with a third screw hole corresponding to the position of the second screw hole. Fixing bolts are inserted into the second screw hole and the third screw hole. A connecting pin for fixing the double-ear connector is inserted into the second through hole.

[0008] Furthermore, the end of the double-ear connector is provided with a groove that is adapted to the connecting plate, and a third through hole is provided on both sides of the groove. The connecting plate is engaged in the groove, and the connecting pin passes through the third through hole.

[0009] Furthermore, the center of the wheel disc connector, the center of the second through hole, and the center of the hinge hole on the actuator hinge seat are all located in the same horizontal plane.

[0010] Furthermore, the wheel center disc connector is provided with a plurality of first through holes.

[0011] Furthermore, the dummy wheel is provided with a vertical loading connection point, a yaw loading connection point, and a ground loading connection point.

[0012] Compared with the prior art, the beneficial effects of this utility model are: (1) Solve the problem of rotational instability of the actuator under lateral pressure loading in the original device. The actual lateral loading point of the original device is at the outermost two ends of the dummy wheel's heading, while the actual lateral force of the aircraft landing gear wheel is at the wheel center. The original device simulates the actual force conditions of the aircraft dummy wheel. However, during the calibration test of this device, the actuator directly applies the load at the center of the wheel center through the double-ear connector, which is the same as the actual force position of the aircraft dummy wheel. A large number of loads can be applied at the wheel center, avoiding the situation of insufficient strength of the transfer device. This fills the technical gap of directly applying loads to the side plate of the dummy wheel. This device can not only realize the loading of a large number of loads on the wheel center, but also solve the instability problem caused by the force line deviation of the original device, reducing the test risk. (2) It has strong versatility and can ensure that the universal lateral wheel center loading device for dummy wheels with diameters within a certain range is universal. As long as the mounting hole of the wheel center disc connector can be assembled on the outer side plate of the dummy wheel, the wheel center disc connector and the single ear connector can be used as universal standard parts. When loading the new machine, it is only necessary to drill holes on the outer side plate of the dummy wheel to connect this device for testing. (3) Thirdly, it significantly improves efficiency, and the assembly process is simple during the test; and the device is fixed by bolts only, without the need for leveling measures. Attached Figure Description Figure 1 This is a schematic diagram of the universal lateral wheel center loading device for aircraft landing gear dummy wheels in this embodiment of the present invention; Figure 2 for Figure 1 Sectional view along the AA direction; Figure 3 A schematic diagram of the structure of the wheel-center disc connector in this embodiment of the present invention; Figure 4 for Figure 3 A cross-sectional view along the AA direction; Figure 5 for Figure 3 The view along direction B; Figure 6 This is a schematic diagram of the structure of the single-ear connector in an embodiment of the present utility model. Figure 1 ; Figure 7 This is a schematic diagram of the structure of the single-ear connector in an embodiment of the present utility model. Figure 2 ; Figure 8 This is a schematic diagram of the actuator in an embodiment of the present invention; Figure 9 This is a schematic diagram of the tensile and compressive sensor in an embodiment of this utility model.

[0013] The attached figures are labeled as follows: 1-Dummy wheel, 2-Wheel center disc connector, 201-First screw hole, 202-Second screw hole, 203-First through hole, 3-Single ear connector, 301-Base, 302-Connecting plate, 303-Second through hole, 304-Third screw hole, 4-Double ear connector, 5-Tension / compression sensor, 6-Locking ring, 7-Actuator, 8-Actuator hinge seat, 9-Mounting plate, 10-Vertical loading connection point, 11-Yaw loading connection point, 12-Grounding loading connection point, 13-Fixing bolt, 14-Connecting pin, 15-Connecting bolt. Detailed Implementation

[0014] To make the objectives, technical solutions, and advantages of the embodiments of this application clearer, the technical solutions of the embodiments of this application will be clearly and completely described below with reference to the accompanying drawings. Obviously, the embodiments described below are only some embodiments of this application, not all embodiments. The components of the embodiments of this application described and shown in the accompanying drawings can generally be arranged and designed in various different configurations. Therefore, the detailed description of the embodiments of this application provided below with reference to the accompanying drawings is intended merely to illustrate selected embodiments of this application and is not intended to limit the scope of protection claimed by this application. All other embodiments obtained by those skilled in the art based on the embodiments of this application without inventive effort are within the scope of protection of this application.

[0015] It should be understood that in the description of the embodiments of this utility model, the terms "center," "longitudinal," "lateral," "length," "width," "thickness," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," "outer," "clockwise," and "counterclockwise," etc., indicating the orientation or positional relationship, are based on the orientation or positional relationship shown in the accompanying drawings. They are only for the convenience of describing the embodiments of this utility model and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on the embodiments of this utility model. Furthermore, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of indicated technical features. Thus, features defined with "first" and "second" may explicitly or implicitly include one or more of the stated features. In the description of the embodiments of this utility model, "a plurality of" means two or more, unless otherwise explicitly specified.

[0016] In the description of the embodiments of this utility model, it should be noted that, unless otherwise explicitly specified and limited, the terms "set," "install," "connect," and "link" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection, an electrical connection, or a connection that allows for mutual communication; they can refer to a direct connection or an indirect connection through an intermediate medium; they can refer to the internal communication of two components or the interaction between two components. Those skilled in the art can understand the specific meaning of the above terms in the embodiments of this utility model according to the specific circumstances.

[0017] like Figure 1 As shown, this utility model provides a universal lateral wheel center loading device for aircraft landing gear dummy wheels. The device includes a dummy wheel 1, a wheel center disc connector 2, a single-ear connector 3, a double-ear connector 4, and an actuator 7 connected sequentially along the axial direction. The actuator 7 directly applies a load to the wheel center of the dummy wheel 1 through the double-ear connector 4, the single-ear connector 3, and the wheel center disc connector 2. The axial direction mentioned here mainly refers to the axis of the actuator 7. During calibration testing, the actuator 7 applies a radial load to the connection point of the single-ear connector 3 of this wheel center loading device through the double-ear connector 4. The wheel center disc connector 2, the single-ear connector 3, and the actuator 7 can all be used as universal standard parts. For the new type of loading, only a hole needs to be drilled in the outer side plate of the dummy wheel 1 to connect this device for testing. Optionally, a tension / compression sensor 5 is provided at the connection end between the actuator 7 and the double-ear connector 4, and a mounting plate 9 is connected to the other end of the actuator 7. Specifically, the actuator 7 and the dual-ear connector 4 are connected via a tension / compression sensor 5, the structure of which is as follows: Figure 9 As shown. The actuator 7 has an external thread on its left end, and the tension / compression sensor 5 is connected to the actuator 7 via the thread on its right end. To better connect the tension / compression sensor 5, actuator 7, and double-ear connector 4, a locking ring 6 can be used for auxiliary fixation. The left end of the tension / compression sensor 5 and the right end of the double-ear connector 4 can also be connected via the locking ring 6. The right end of the actuator 7 is connected to the mounting plate 9 via the actuator hinge seat 8. The structure of the actuator 7 is as follows. Figure 8 As shown.

[0018] Optionally, the wheel center disc connector 2 is provided with multiple first screw holes 201 and second screw holes 202 from the outside to the inside. A connecting bolt 15 is provided in the first screw hole 201. The wheel center disc connector 2 is connected to the dummy wheel 1 through multiple connecting bolts 15. The wheel center disc connector 2 is connected to the single ear connector 3 through multiple second screw holes 202.

[0019] like Figure 3As shown, the wheel center disc connector 2 is provided with multiple first screw holes 201 and second screw holes 202. Both the first screw holes 201 and second screw holes 202 are arranged horizontally. To ensure uniform force distribution on the wheel center disc connector 2, the first screw holes 201 and second screw holes 202 can be arranged symmetrically, or as needed. A screw hole corresponding to the first screw hole 201 is provided on the outer side plate of the dummy wheel 1 for inserting connecting bolts 15 to connect the wheel center disc connector 2 and the dummy wheel 1. The second screw hole 202 is used to connect the single-ear connector 3.

[0020] like Figure 6 , Figure 7 As shown, the single-ear connector 3 includes a base 301 and a connecting plate 302. The connecting plate 302 is located in the middle of the base 301, and the base 301 and the connecting plate 302 form a T-shaped structure. The connecting plate 302 is provided with a second through hole 303, and the base 301 is provided with a third screw hole 304 corresponding to the position of the second screw hole 202. Fixing bolts 13 are inserted into the second screw hole 202 and the third screw hole 304, and a connecting pin 14 for fixing the double-ear connector 4 is inserted into the second through hole 303.

[0021] Optionally, one end of the double-ear connector 4 is provided with a groove that fits the connecting plate 302, and a third through hole is provided on both sides of the groove. The connecting plate 302 is locked in the groove, and the connecting pin 14 passes through the third through hole. The other end of the double-ear connector 4 is connected to the tension and compression sensor 5, and the other side of the actuator 7 is connected to the mounting plate 9 through the actuator hinge seat 8.

[0022] like Figure 1 As shown, the center of the wheel disc connector 2, the center of the second through hole 303, and the center of the circular hole on the actuator hinge seat 8 at the connection between the actuator 7 and the mounting plate 9 are all located in the same horizontal plane.

[0023] Optionally, the wheel center disc connector 2 is provided with multiple first through holes 203.

[0024] like Figure 4 As shown, the wheel center disc connector 2 is designed as a hollow platform structure that protrudes to the right in the middle, and multiple first through holes 203 are provided on the main body side wall of the wheel center disc connector 2. Figure 4 for Figure 3 The view along the AA direction in the middle. Figure 5 for Figure 3 The view along direction B. In this embodiment, Figure 3 The wheel center disc connector 2 shown has 5 first screw holes 201, 4 second screw holes 202 and 4 first through holes 203. The first through holes 203 and the corresponding second screw holes 202 are arranged along the radial direction of the wheel center disc connector 2. The first screw holes 201 in the horizontal direction form a 45° angle with the nearest first through hole 203.

[0025] like Figure 1 As shown, the dummy wheel 1 is also provided with at least a vertical loading connection point 10, a yaw loading connection point 11, and a ground loading connection point 12, so as to connect with the landing gear.

[0026] It should be noted that the dummy wheel 1, the wheel center disc connector 2, the single-ear connector 3, the double-ear connector 4, and the actuator 7 are not only arranged along the axial direction of the universal lateral wheel center loading device, but also coaxially arranged with the dummy wheel 1, the wheel center disc connector 2, the tension and compression sensor 5, and the actuator 7.

[0027] The universal lateral wheel center loading device provided by this utility model has the following advantages: (1) It solves the problem of rotational instability of the actuator under lateral pressure loading in the original device. The actual lateral loading point of the original device is at the outermost two ends of the dummy wheel's heading, while the lateral force of the aircraft landing gear wheel is at the wheel center. The original device simulates the actual force conditions of the aircraft dummy wheel. However, during the calibration test of this device, the actuator directly applies the load at the center of the wheel center through the double-ear connector, which is the same as the actual force position of the aircraft dummy wheel. A large number of loads can be applied at the wheel center, avoiding situations such as insufficient strength of the transfer device. It fills the technical gap of directly applying loads to the side plate of the dummy wheel. This device can not only realize the loading of a large number of loads on the wheel center, but also solve the instability problem caused by the force line deviation of the original device, reducing the test risk. (2) It has strong versatility and can ensure that the universal lateral wheel center loading device for dummy wheels with diameters within a certain range is universal. As long as the mounting hole of the wheel center disc connector can be assembled on the outer side plate of the dummy wheel, the wheel center disc connector and the single ear connector can be used as universal standard parts. When loading the new machine, it is only necessary to drill holes on the outer side plate of the dummy wheel to connect this device for testing. (3) Thirdly, it significantly improves efficiency, and the assembly process is simple during the test; and the device is fixed by bolts only, without the need for leveling measures. The above description is merely a specific embodiment of this application, but the scope of protection of this application is not limited thereto. Any changes or substitutions within the technical scope disclosed in this application should be included within the scope of protection of this application. Therefore, the scope of protection of this application should be determined by the scope of the claims.

Claims

1. A universal lateral wheel center loading device for aircraft landing gear dummy wheels, characterized in that: The device includes a dummy wheel, a wheel center disc connector, a single-ear connector, a double-ear connector, and an actuator connected sequentially along the axial direction. The actuator directly applies a load to the center of the dummy wheel through the double-ear connector, the single-ear connector, and the wheel center disc connector.

2. The universal lateral wheel center loading device for aircraft landing gear dummy wheels according to claim 1, characterized in that: One end of the actuator is connected to a tension / compression sensor, the end of the tension / compression sensor away from the actuator is connected to the double-ear connector, and the other end of the actuator is connected to a mounting plate.

3. The universal lateral wheel center loading device for aircraft landing gear dummy wheels according to claim 2, characterized in that: The wheel center disc connector is provided with a plurality of first screw holes and second screw holes from the outside to the inside. A connecting bolt is provided in the first screw hole. The wheel center disc connector is connected to the dummy wheel through the plurality of connecting bolts. The wheel center disc connector is connected to the single ear connector through the plurality of second screw holes.

4. The universal lateral wheel center loading device for aircraft landing gear dummy wheels according to claim 3, characterized in that: The single-ear connector includes a base and a connecting plate. The base and the connecting plate form a T-shaped structure. The connecting plate is provided with a second through hole. The base is provided with a third screw hole corresponding to the position of the second screw hole. Fixing bolts are inserted into the second screw hole and the third screw hole. A connecting pin for fixing the double-ear connector is inserted into the second through hole.

5. The universal lateral wheel center loading device for aircraft landing gear dummy wheels according to claim 4, characterized in that: The end of the double-ear connector is provided with a groove that is adapted to the connecting plate. A third through hole is provided on both sides of the groove. The connecting plate is engaged in the groove, and the connecting pin passes through the third through hole.

6. The universal lateral wheel center loading device for aircraft landing gear dummy wheels according to claim 5, characterized in that: The center of the wheel disc connector, the center of the second through hole, and the center of the circular hole on the actuator hinge seat are all located in the same horizontal plane.

7. The universal lateral wheel center loading device for aircraft landing gear dummy wheels according to any one of claims 3-6, characterized in that: The wheel center disc connector is provided with multiple first through holes.

8. The universal lateral wheel center loading device for aircraft landing gear dummy wheels according to claim 2, characterized in that: The dummy wheel is equipped with a vertical loading connection point, a yaw loading connection point, and a ground loading connection point.

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