Undercarriage hinge point deviation simulation device and undercarriage hinge point deviation simulation system

Abstract

The invention discloses an undercarriage hinge point deviation simulation device and system, and relates to the technical field of aircraft undercarriage testing, and the undercarriage hinge point deviation simulation device comprises a base frame and a plurality of adjusting modules; the multiple adjusting modules are all installed on the base frame, all the adjusting modules are used for being in transmission connection with undercarriage hinge points, and the different adjusting modules can drive the undercarriage hinge points to move in different directions and can fix the relative positions of the undercarriage hinge points. According to the undercarriage hinge point deviation simulation device and system provided by the invention, the test flexibility can be improved.

Description

Technical Field

[0001] The present invention relates to the technical field of aircraft landing gear testing, and particularly to a landing gear hinge point deviation simulation device and system. Background Art

[0002] The landing gear is an important part of an aircraft, usually used to support the movement of the aircraft on the ground or water surface, and plays a key role during takeoff and landing. The stability of the landing gear under impact loads is crucial for the movement or landing of the aircraft.

[0003] During the installation of some hinge joints of the existing landing gear, factors such as the deformation of the aircraft wing or assembly errors cause the installation position of the landing gear hinge point to deviate from the theoretical installation position. Therefore, it is necessary to test the stability of the landing gear under impact loads in the state of hinge point deviation. However, there is currently a lack of a simulation device that can adjust the deviation position of the landing gear hinge point in multiple directions during the test. Summary of the Invention

[0004] The purpose of the present invention is to provide a landing gear hinge point deviation simulation device and system to solve the problems existing in the above-mentioned prior art and improve the flexibility of the test.

[0005] To achieve the above purpose, the present invention provides the following solutions:

[0006] The present invention provides a landing gear hinge point deviation simulation device, including a base frame and a plurality of adjustment modules; the plurality of adjustment modules are all installed on the base frame, and each adjustment module is used for driving connection with the landing gear hinge point. Different adjustment modules can drive the landing gear hinge point to displace in different directions and can fix the position of the landing gear hinge point.

[0007] Preferably, each adjustment module includes a driving mechanism and a connecting seat. The driving mechanism is fixedly installed on the base frame, and the driving mechanism is in driving connection with the connecting seat. The connecting seat is used for connecting with the landing gear hinge point or the test bench; under the drive of the driving mechanism, the connecting seat and the base frame can have relative displacement.

[0008] Preferably, each of the driving mechanisms includes a driving part, a lead screw, a guiding assembly, a locking member, and a transmission seat. The two ends of the lead screw are rotatably connected to a support. The guiding assembly and the support are both fixedly connected to the base frame. The driving part is in transmission connection with one end of the lead screw. The transmission seat is sleeved outside the lead screw and is in threaded connection with the lead screw. The transmission seat is fixedly connected to the connecting seat, and the connecting seat is slidably connected to the guiding assembly. The driving part drives the lead screw to rotate relative to the support, and under the guidance of the guiding assembly, the transmission seat linearly moves along the axial direction of the lead screw, so as to be able to drive the connecting seat to have a relative displacement with respect to the base frame. And the locking member can be connected to the transmission seat to lock the relative position of the transmission seat and the lead screw, and further lock the relative position of the connecting seat and the base frame.

[0009] Preferably, the driving part is set as a hand wheel.

[0010] Preferably, each of the driving mechanisms further includes a monitoring component, and the monitoring component is used for monitoring the displacement information of the transmission seat.

[0011] Preferably, the guiding assembly includes guiding rods arranged on both sides of the lead screw. Both ends of each guiding rod are connected to a fixing seat, and the fixing seat is fixedly connected to the base frame. And at least one slider is slidably arranged on each guiding rod along its own length direction, and the slider is fixedly connected to the connecting seat.

[0012] Preferably, the locking member is set as a locking nut. The locking nut is sleeved outside the lead screw and is in threaded connection with the lead screw, and the locking nut can be pressed and fixed to the transmission seat.

[0013] Preferably, the number of the adjusting modules is set to two, and the two adjusting modules can drive the landing gear hinge point along the first direction and the second direction perpendicular to each other respectively.

[0014] Preferably, the base frame includes a first seat plate and a second seat plate arranged perpendicular to each other, and the two adjusting modules are respectively fixedly connected to the first seat plate and the second seat plate.

[0015] The present invention also provides a landing gear hinge point deviation simulation system, including a test bench and at least one landing gear hinge point deviation simulation device as described above. The landing gear hinge point deviation simulation device is arranged on the test bench and is used for connecting with the landing gear hinge point.

[0016] The present invention has achieved the following technical effects compared with the prior art:

[0017] The landing gear hinge point deviation simulation device and system provided by the present invention can drive the landing gear hinge point in different directions by arranging a plurality of adjustment modules on the base frame, displace and fix the landing gear hinge point, adjust and fix the deviation position of the landing gear hinge point in multiple directions, and improve the flexibility of the test for the landing gear hinge point deviation. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] In order to more clearly illustrate the technical solutions in the embodiments of the present invention or the prior art, the following will briefly introduce the drawings required for use in the embodiments. Obviously, the drawings in the following description are only some embodiments of the present invention. For those of ordinary skill in the art, without creative efforts, other drawings can also be obtained based on these drawings.

[0019] Figure 1 Schematic diagram of a landing gear hinge point deviation simulation device provided in Embodiment 1 of the present invention;

[0020] Figure 2 Schematic diagram of a structure of an adjustment module provided in Embodiment 1 of the present invention;

[0021] Figure 3 Middle cross-sectional view of an adjustment module provided in Embodiment 1 of the present invention;

[0022] Figure 4 Schematic diagram of the cooperation between the landing gear hinge point deviation simulation device and the landing gear provided in Embodiment 1 of the present invention.

[0023] In the figure: 100 - landing gear hinge point deviation simulation device; 1 - base frame; 11 - first seat plate; 12 - second seat plate; 2 - adjustment module; 21 - driving mechanism; 22 - connecting seat; 23 - driving part; 24 - lead screw; 25 - guiding component; 251 - guiding rod; 252 - fixed seat; 253 - slider; 26 - locking component; 27 - transmission seat; 28 - support; 3 - landing gear hinge point. DETAILED DESCRIPTION OF THE EMBODIMENTS

[0024] The following will clearly and completely describe the technical solutions in the embodiments of the present invention with reference to the drawings in the embodiments of the present invention. Obviously, the described embodiments are only some embodiments of the present invention, rather than all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those of ordinary skill in the art without creative efforts belong to the scope of protection of the present invention.

[0025] The purpose of the present invention is to provide a landing gear hinge point deviation simulation device and system to solve the problems existing in the above-mentioned prior art and improve the flexibility of the test.

[0026] To make the above objects, features, and advantages of the present invention more obvious and understandable, the present invention will be further described in detail below with reference to the accompanying drawings and specific embodiments.

[0027] Embodiment 1

[0028] This embodiment provides a landing gear hinge point deviation simulation device 100. Please refer to Figure 1 and Figure 4 , which includes a base frame 1 and a plurality of adjustment modules 2. The plurality of adjustment modules 2 are all installed on the base frame 1, and each adjustment module 2 is used for driving connection with the landing gear hinge point 3. Different adjustment modules 2 can drive the landing gear hinge point 3 to displace in different directions and can fix the position of the landing gear hinge point 3.

[0029] By arranging a plurality of adjustment modules 2 on the base frame 1, the plurality of adjustment modules 2 can drive the landing gear hinge point 3 in different directions, causing the landing gear hinge point 3 to displace and be fixed, and can adjust and fix the deviation position of the landing gear hinge point 3 in multiple directions, improving the flexibility of the deviation test for the landing gear hinge point 3.

[0030] In an alternative solution of this embodiment, preferably, please refer to Figure 2 and Figure 3 , each adjustment module 2 includes a driving mechanism 21 and a connecting seat 22. The driving mechanism 21 is fixedly installed on the base frame 1, and the driving mechanism 21 is in driving connection with the connecting seat 22. The connecting seat 22 is used for connecting with the landing gear hinge point 3 or the test bench. Under the drive of the driving mechanism 21, a relative displacement can occur between the connecting seat 22 and the base frame 1. Specifically, when the connecting seat 22 is directly connected to the landing gear hinge point 3, the driving mechanism 21 connected to the connecting seat 22 can directly drive the landing gear hinge point 3 to move in one direction through the connecting seat 22. If a connecting seat 22 is directly connected to the test bench, when the driving mechanism 21 where the connecting seat 22 is located acts, since the position of the test bench is fixed and the position of the connecting seat 22 is fixed, the driving mechanism 21 will move and be in driving connection with the landing gear hinge point 3 through the base frame 1, capable of driving the entire adjustment module 2 where the landing gear hinge point 3 is located to move, and further driving the landing gear hinge point 3 to deviate in another direction.

[0031] Furthermore, the connecting seat 22 can be detachably connected to a transmission plate through bolts, and the transmission plate is then connected to the landing gear hinge point 3.

[0032] In an alternative solution of this embodiment, preferably, each driving mechanism 21 includes a driving part 23, a lead screw 24, a guiding assembly 25, a locking member 26 and a transmission seat 27. The two ends of the lead screw 24 are rotatably connected to a support 28. The guiding assembly 25 and the support 28 are both fixedly connected to the base frame 1. The driving part 23 is in transmission connection with one end of the lead screw 24. Since the transmission seat 27 is sleeved outside the lead screw 24 and is in threaded connection with the lead screw 24, and the transmission seat 27 is fixedly connected to the connecting seat 22, and the connecting seat 22 is slidably connected to the guiding assembly 25. When the driving part 23 drives the lead screw 24 to rotate relative to the support 28, under the guidance of the guiding assembly 25, the whole connecting seat 22 will not rotate, enabling the transmission seat 27 to linearly move along the axial direction of the lead screw 24, so as to drive a relative displacement between the connecting seat 22 and the base frame 1. Through the transmission mode of the lead screw 24, the driving offset accuracy is guaranteed; and the locking member 26 can be connected to the transmission seat 27 to lock the relative position between the transmission seat 27 and the lead screw 24, and further lock the relative position between the connecting seat 22 and the base frame 1, which is used for high-stability displacement locking under working conditions with impact loads.

[0033] Specifically, the support 28 and the base frame 1, and the transmission seat 27 and the connecting seat 22 are both detachably fixedly connected by bolts. The two ends of the lead screw 24 are rotatably connected to the support 28 through bearings.

[0034] In an alternative solution of this embodiment, preferably, the driving part 23 is set as a handwheel; the displacement deviation of the landing gear hinge point 3 is manually and precisely adjusted through the handwheel.

[0035] In an alternative solution of this embodiment, preferably, each driving mechanism 21 further includes a monitoring component, which is used to monitor the displacement information of the transmission seat 27; by monitoring the displacement information, the displacement deviation information of the landing gear hinge point 3 can be accurately known; specifically, the monitoring component is set as a dial, which is used in cooperation with the handwheel. The cooperation mode among the dial, the handwheel and the lead screw 24 adopts a conventional mode. For example, the handwheel and the dial are coaxially fixedly arranged and are in coaxial transmission with the lead screw 24. The dial rotates synchronously with the handwheel, and the rotation angle or linear displacement is directly displayed through scale marks.

[0036] Specifically, the lead screw 24 can be selected as a trapezoidal lead screw with a diameter of 40 mm, a pitch of 6 mm, an adjustment accuracy of ±0.5 mm, and the minimum scale division value of the dial corresponding to 0.5 mm, supporting accurate positive / negative adjustment.

[0037] It should be noted that the driving part 23 is not limited to setting a handwheel for rotational driving. Other rotational driving components can also be set, such as the motor realizing the rotation of the lead screw 24 through electric control, as long as the rotational driving of the lead screw 24 can be realized. In addition, the driving mechanism 21 is not limited to the lead screw transmission combination mechanism described above. Other linear driving mechanisms can also be adopted, such as electric telescopic parts or hydraulic telescopic parts, as long as the linear driving of the connecting seat 22 can be realized.

[0038] In an alternative solution of this embodiment, preferably, the guiding assembly 25 includes guiding rods 251 arranged on both sides of the lead screw 24. Fixed seats 252 are connected to both ends of each guiding rod 251, and the fixed seats 252 are fixedly connected to the base frame 1. And at least one slider 253 is slidably arranged along the length direction of each guiding rod 251, and the slider 253 is fixedly connected to the connecting seat 22. The guiding rods 251 guide the sliding of the connecting seat 22 to prevent the connecting seat 22 from flipping. Among them, the fixed seat 252 is detachably fixedly connected to the base frame 1 through bolts. The slider 253 can be slidably connected to the guiding rod 251 by arranging bearings inside. The slider 253 is detachably fixedly connected to the connecting seat 22 through bolts. Two sliders 253 can be slidably arranged on each guiding rod 251 to improve the transmission stability of the connecting seat 22.

[0039] In an alternative solution of this embodiment, preferably, the locking component 26 is set as a locking nut. The locking nut is sleeved outside the lead screw 24 and is threadedly connected to the lead screw 24, and the locking nut can be tightly pressed and fixed to the transmission seat 27. Specifically, the locking component 26 is set as a double-nut locking piece, specifically adopting a double-nut structure with adjustable spacing. It is connected to the transmission seat 27 through a pre-tightening bolt, and can squeeze the two nuts to generate radial pressure, eliminate the thread clearance with the lead screw 24, and utilize the static friction force of the thread contact surface to resist the impact load and strengthen the locking performance, so as to achieve high-stability displacement locking under the impact load condition. When adjusting the displacement deviation of the landing gear hinge point 3, the locking component 26 and the transmission seat 27 can be initially connected through a pre-tightening bolt, so that the locking component 26 can move linearly following the transmission seat 27. When it is necessary to lock the position of the landing gear hinge point 3, tighten the pre-tightening bolt to apply a pre-tightening force, squeeze the two nuts to generate radial pressure, eliminate the thread clearance with the lead screw 24, and utilize the static friction force of the thread contact surface to resist the impact load and strengthen the locking performance, so as to lock the position of the landing gear hinge point 3.

[0040] In an alternative solution of this embodiment, preferably, the number of the adjustment modules 2 is set to two, and the two adjustment modules 2 can drive the landing gear hinge point 3 along the first direction and the second direction perpendicular to each other respectively. Specifically, please refer to Figure 4The first direction adjusted by the horizontally arranged adjustment module 2 is the heading of the aircraft, and the second direction adjusted by the vertically arranged adjustment module 2 is the vertical direction. By adjusting the deviation of the heading and the vertical direction, the deviation of the landing gear hinge point 3 can be flexibly adjusted.

[0041] Among the optional solutions of this embodiment, it is more preferred to refer to Figure 1 The base frame 1 includes a first seat plate 11 and a second seat plate 12 which are vertically arranged. The two adjustment modules 2 are respectively fixedly connected to the first seat plate 11 and the second seat plate 12. By arranging the vertically arranged first seat plate 11 and the second seat plate 12, the two adjustment modules 2 are orthogonally arranged on the base frame 1, so as to adjust the deviation of the landing gear hinge point 3 in the heading and vertical direction.

[0042] In the optional solution of this embodiment, it is more preferred that reinforcing ribs are fixedly provided between the inner sides of the first seat plate 11 and the second seat plate 12 to enhance the supporting stability of the base frame 1 .

[0043] Among the optional solutions of this embodiment, it is more preferred that the entire material of the landing gear hinge point deviation simulation device 100 provided in this embodiment can be made of stainless steel to ensure the service life.

[0044] Embodiment 2

[0045] The present embodiment provides a landing gear hinge point deviation simulation system, including a test bench and at least one landing gear hinge point deviation simulation device 100 as in the first embodiment, the landing gear hinge point deviation simulation device 100 is arranged on the test bench and is used to be connected to the landing gear hinge point 3; as for other structures of the landing gear hinge point deviation simulation system, conventional structures are adopted, which will not be described in detail here.

[0046] Specifically, the specific matching mode between the landing gear hinge point deviation simulation device 100 and the landing gear is determined according to actual needs, such as Figure 4 As shown, when two landing gear hinge points 3 are provided on the aircraft landing gear, correspondingly, two landing gear hinge point deviation simulation devices 100 need to be provided to be correspondingly connected to the two landing gear hinge points 3, wherein the two landing gear hinge points 3 are respectively connected to the vertical adjustment modules 2 of the two landing gear hinge point deviation simulation devices 100, and the vertical adjustment module 2 directly drives the landing gear hinge point 3 to deviate in the vertical direction. The heading adjustment module 2 can be directly fixedly connected to the test bench. When the heading driving mechanism 21 is actuated, since the position of the test bench is fixed and the position of the connecting seat 22 is fixed, the driving mechanism 21 will move and be connected to the landing gear hinge point 3 through the base frame 1, and can drive the base frame 1 to move, thereby driving the adjustment module 2 where the landing gear hinge point 3 is located to move as a whole, and then driving the landing gear hinge point 3 to deviate along the heading.

[0047] In actual application, the landing gear hinge point 3 can also be directly connected to the heading adjustment module 2, and the heading adjustment module 2 directly drives the landing gear hinge point 3 to deviate in heading; the vertical adjustment module 2 can be directly fixedly connected to the test bench, driving the heading adjustment module 2 where the landing gear hinge point 3 is located to move as a whole, and then driving the landing gear hinge point 3 to deviate in the vertical direction.

[0048] Specifically, the connection seat 22 can be detachably connected to a transmission plate by bolts, and the transmission plate is then connected to the test bench.

[0049] Correspondingly, when there is only one or more landing gear hinge points 3 on the aircraft landing gear, it is necessary to set the same number of landing gear hinge point deviation simulation devices 100 to be correspondingly connected to the landing gear hinge points 3.

[0050] The specific method of using the landing gear hinge point deviation simulation device 100 is as follows:

[0051] The landing gear hinge point 3 is connected to the connecting seat 22 of the vertical adjustment module 2. By rotating the hand wheel of the vertical adjustment module 2, the lead screw 24 is driven to rotate. With the cooperation of the guide assembly 25, the transmission seat 27 can move linearly along the axial direction of the lead screw 24, and the landing gear hinge point 3 is directly driven to move vertically through the connecting seat 22, so as to achieve precise vertical displacement adjustment of the landing gear hinge point 3; similarly, by rotating the hand wheel of the heading adjustment module 2, the lead screw 24 is driven to rotate. With the cooperation of the guide assembly 25, the transmission seat 27 can move linearly along the axial direction of the lead screw 24. Since the position of the test bench is fixed and the position of the connecting seat 22 is fixed, the driving mechanism 21 will move and be connected to the landing gear hinge point 3 through the base frame 1, so as to drive the base frame 1 to move, thereby driving the adjustment module 2 where the landing gear hinge point 3 is located to move as a whole, and then driving the landing gear hinge point 3 to deviate along the heading; after adjustment, the locking of the device can be completed by tightening the bolts between the locking component 26 and the transmission seat 27.

[0052] The present invention uses specific examples to illustrate the principles and implementation methods of the present invention. The above examples are only used to help understand the method and core ideas of the present invention. At the same time, for those skilled in the art, according to the ideas of the present invention, there will be changes in the specific implementation methods and application scope. In summary, the content of this specification should not be understood as limiting the present invention.

Claims

1. A landing gear hinge point deviation simulation device, characterized in that: Comprising: Base frame (1); A plurality of adjustment modules (2), all installed on the base frame (1), each adjustment module (2) is used for driving connection with the landing gear hinge point (3), different adjustment modules (2) can drive the landing gear hinge point (3) to displace in different directions, and can fix the position of the landing gear hinge point (3).

2. The landing gear hinge point deviation simulation device according to claim 1, wherein: Each adjustment module (2) includes a driving mechanism (21) and a connecting seat (22), the driving mechanism (21) is fixedly installed on the base frame (1), the driving mechanism (21) is in driving connection with the connecting seat (22), and the connecting seat (22) is used for connecting with the landing gear hinge point (3) or the test bench; under the drive of the driving mechanism (21), the connecting seat (22) and the base frame (1) can have relative displacement.

3. The landing gear hinge point deviation simulation device according to claim 2, characterized in that: Each driving mechanism (21) includes a driving part (23), a lead screw (24), a guiding component (25), a locking component (26) and a transmission seat (27), both ends of the lead screw (24) are rotatably connected with a support (28), the guiding component (25) and the support (28) are both fixedly connected to the base frame (1), the driving part (23) is in driving connection with one end of the lead screw (24), the transmission seat (27) is sleeved outside the lead screw (24) and is in threaded connection with the lead screw (24), the transmission seat (27) is fixedly connected with the connecting seat (22), and the connecting seat (22) is slidably connected to the guiding component (25); The driving part (23) drives the lead screw (24) to rotate relative to the support (28), and under the guidance of the guiding component (25), the transmission seat (27) moves linearly along the axial direction of the lead screw (24), so as to drive the connecting seat (22) and the base frame (1) to have relative displacement; and the locking component (26) can be connected with the transmission seat (27) to lock the relative position of the transmission seat (27) and the lead screw (24), and further lock the relative position of the connecting seat (22) and the base frame (1).

4. The landing gear hinge point deviation simulation device according to claim 3, wherein: The driving part (23) is set as a handwheel.

5. The landing gear hinge point deviation simulation device according to claim 4, characterized in that: Each driving mechanism (21) further includes a monitoring component, and the monitoring component is used for monitoring the displacement information of the transmission seat (27).

6. The landing gear hinge point deviation simulation device according to claim 3, characterized in that: The guiding component (25) includes guiding rods (251) arranged on both sides of the lead screw (24), both ends of each guiding rod (251) are connected with a fixing seat (252), and the fixing seat (252) is fixedly connected to the base frame (1); and at least one slider (253) is slidably arranged on each guiding rod (251) along its own length direction, and the slider (253) is fixedly connected with the connecting seat (22).

7. The landing gear hinge point deviation simulation device according to claim 3, characterized in that: The locking component (26) is set as a locking nut, the locking nut is sleeved outside the lead screw (24) and is in threaded connection with the lead screw (24), and the locking nut can be pressed and fixed on the transmission seat (27).

8. The landing gear hinge point deviation simulation device according to claim 1, characterized in that: The number of the adjusting modules (2) is set to two, and the two adjusting modules (2) can drive the landing gear hinge point (3) along mutually perpendicular first and second directions respectively.

9. The landing gear hinge point deviation simulation device according to claim 8, characterized in that: The base frame (1) includes a first base plate (11) and a second base plate (12) which are arranged perpendicular to each other, and the two adjusting modules (2) are respectively fixedly connected to the first base plate (11) and the second base plate (12).

10. A landing gear hinge point deviation simulation system, characterized in that: Comprising: A test bench; At least one landing gear hinge point deviation simulation device (100) as described in any one of claims 1-9, the landing gear hinge point deviation simulation device (100) is arranged on the test bench and is used for connecting with the landing gear hinge point (3).

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