A three-axis position adjustable landing gear upper lock pin fixing base device

Abstract

The present invention discloses a landing gear upper lock pin fixing base device with adjustable three-axis positions. The upper lock pin and the upper lock pin seat are rigidly connected, the mounting ring and the upper lock pin seat pressure plate are rigidly connected, and the toothed plate is arranged between the upper lock pin seat pin seat platform and the upper lock pin seat pressure plate; by adjusting the relative engagement position of the toothed plate and the upper lock pin seat pressure plate, the relative position of the upper lock pin seat and the mounting ring in the X direction is changed; by adjusting the number of first adjustment gaskets sandwiched between the upper lock pin seat and the mounting ring, the relative position of the upper lock pin seat and the mounting ring in the Y direction is changed; by adjusting the number of second adjustment gaskets sandwiched between the upper lock pin seat and the mounting ring, the relative position of the upper lock pin seat and the mounting ring in the Y direction is changed. This improves the reliability of landing gear locking and solves the defect that the traditional landing gear upper lock pin fixing and installation device can only achieve position adjustment in two directions and cannot accurately adjust the position of the landing gear upper lock pin.

Description

Technical Field

[0001] The present invention relates to the technical field of landing gears, in particular to a landing gear upper lock pin fixing base device with adjustable three-axis positions. Background Art

[0002] The landing gear uplock secures the landing gear strut in the retracted position, supporting the landing gear mass loads under various flight conditions. Some aircraft experience greater acceleration, longer vibration duration, and higher vibration levels, placing even higher demands on the uplock's reliable locking. The mounting position of the landing gear uplock pin must be adjustable in all three axes to compensate for design, process, and operational variations, ensuring reliable locking between the uplock and the pin.

[0003] At present, the most widely used landing gear upper lock structure is the hook-and-ring upper lock. The upper lock mechanism rigidly connected to the aircraft cabin has a lock hook that can be opened and closed. An upper lock pin is installed on the landing gear structure. The upper lock pin is aligned with the upper lock hook along the landing gear retraction movement trajectory and is hooked by the lock hook as the landing gear is retracted. When the landing gear is retracted, the landing gear upper lock remains locked to ensure that the spatial position of the landing gear in the aircraft cabin is stable when the aircraft is overloaded in all directions; during the landing phase of the aircraft, the landing gear upper lock needs to be opened before lowering the landing gear, the upper lock hook moves and releases the upper lock pin, and after the upper lock pin disengages the lock hook, the landing gear enters the upper lock unlocked state and begins to deploy.

[0004] In response to the more severe vibration conditions of the landing gear, the installation position of the landing gear upper locking pin needs to be adjusted in the XYZ directions. Summary of the Invention

[0005] The present invention provides a three-axis position-adjustable landing gear upper lock pin fixing base device, which serves as compensation for design, process and usage deformation, improves the reliability of landing gear locking, and solves the defect that traditional landing gear upper lock pin fixing installation devices can only achieve position adjustment in two directions and cannot accurately adjust the position of the landing gear upper lock pin.

[0006] In a first aspect, a three-axis position-adjustable landing gear upper lock pin fixing base device is provided, comprising an upper lock pin, an upper lock pin seat, a mounting ring, a second adjustment shim, a toothed plate, a shim bracket, a first adjustment shim, and an upper lock pin seat pressure plate;

[0007] The upper lock pin and the upper lock pin seat are rigidly connected, the mounting ring and the upper lock pin seat pressure plate are rigidly connected, the upper lock pin seat includes a pin seat platform, the pin seat platform is located between the upper lock pin seat pressure plate and the mounting ring, and the pin seat platform is parallel to the XZ plane;

[0008] The toothed plate is arranged between the upper lock pin seat platform and the upper lock pin seat pressure plate, and is fixed relative to the upper lock pin seat platform in the X direction; the upper lock pin seat pressure plate has a first tooth structure on the side facing the toothed plate, and the toothed plate has a second tooth structure on the side facing the upper lock pin seat pressure plate; the first tooth structure and the second tooth structure are meshed with each other; the tooth units of the first tooth structure and the second tooth structure both extend in the Z direction, and the plurality of tooth units are arranged in the X direction; the relative position of the upper lock pin seat and the mounting ring in the X direction is changed by adjusting the relative meshing position of the first tooth structure and the second tooth structure;

[0009] By adjusting the number of first adjustment washers sandwiched between the upper lock pin seat and the mounting ring, the first adjustment washers are perpendicular to the Y direction, thereby changing the relative position of the upper lock pin seat and the mounting ring in the Y direction;

[0010] By adjusting the number of second adjustment washers sandwiched between the upper lock pin seat and the mounting ring, the second adjustment washers are perpendicular to the Z direction, and the relative positions of the upper lock pin seat and the mounting ring in the Y direction are changed.

[0011] In combination with the first aspect, in certain implementations of the first aspect, the upper lock pin seat and the toothed plate are fixed in the X direction through a tenon structure; wherein, the pin seat platform of the upper lock pin seat has two slots, and the two slots are arranged on both sides of the pin seat platform of the upper lock pin seat along the X direction; the toothed plate has two protrusions, and the two protrusions are arranged on both sides of the toothed plate along the X direction; the two protrusions of the toothed plate are respectively inserted into the two slots of the upper lock pin seat.

[0012] In combination with the first aspect, in certain implementations of the first aspect, the upper lock pin seat also includes two pin seat arms located on both sides of the pin seat platform; the pin seat arms are parallel to the XY plane; the two pin seat arms have through holes on the side away from the pin seat platform; the upper lock pin is aligned with the through holes on the two pin seat arms of the upper lock pin seat, and passes through the lock pin fixing bolt to achieve a rigid connection between the upper lock pin and the upper lock pin seat in the three directions of XYZ.

[0013] In conjunction with the first aspect, in certain implementations of the first aspect, the upper lock pin seat pressure plate is in an I-shape, including a center beam and two protruding beams arranged on both sides of the center beam; the upper lock pin seat pressure plate passes through the upper lock pin seat so that the center beam of the upper lock pin seat pressure plate is located above the upper lock pin seat, and the two pin seat arms of the upper lock pin seat are both sandwiched between the two protruding beams on both sides of the center beam of the lock pin seat pressure plate;

[0014] The mounting ring includes an annular body and two top connecting arms; the two top connecting arms are both located above the annular body, and between the two top connecting arms, the annular body forms a mounting platform that is relatively parallel to the upper lock pin seat platform;

[0015] The center beam of the upper lock pin seat pressure plate has a through hole, and the through hole of the upper lock pin seat pressure plate center beam is arranged opposite to the through hole of the top connecting arm of the mounting ring, and is arranged opposite to the through hole of the upper lock pin seat pin seat arm close to the pin seat platform; by passing through the lock pin seat fixing bolt, the upper lock pin seat pressure plate and the mounting ring are rigidly connected in the three directions of XYZ; wherein, the upper lock pin seat pin seat arm is clamped between the center beam of the upper lock pin seat pressure plate and the top connecting arm of the mounting ring; the upper lock pin seat pin seat platform is clamped between the center beam of the upper lock pin seat pressure plate and the mounting platform of the mounting ring.

[0016] In combination with the first aspect, in certain implementations of the first aspect, in the Y direction, a first adjustment gasket is arranged between the upper lock pin seat pin seat platform and the upper lock pin seat pressure plate center beam, and between the upper lock pin seat pin seat platform and the mounting ring mounting platform; the total number of the first adjustment gaskets is fixed; and the distance between the upper lock pin seat and the mounting ring in the Y direction is adjusted by adjusting the number of the first adjustment gaskets between the upper lock pin seat pin seat platform and the mounting ring mounting platform.

[0017] In combination with the first aspect, in certain implementations of the first aspect, a gasket bracket is provided on the side of the mounting ring mounting platform facing the upper lock pin seat pin seat platform; the mounting ring is in contact with the gasket bracket in the Y direction; the upper lock pin seat pin seat platform is located between the toothed plate and the gasket bracket; the position of the upper lock pin seat and the mounting ring in the Y-axis direction is adjusted by increasing or decreasing the number of first adjustment gaskets between the toothed plate and the upper lock pin seat, and between the gasket bracket and the upper lock pin seat, thereby achieving position adjustment of the upper lock pin and the mounting ring in the Y-axis direction; the center beam of the upper lock pin seat pressure plate presses the upper lock pin seat, the toothed plate and the gasket bracket to the mounting ring through the first adjustment gasket.

[0018] In combination with the first aspect, in certain implementations of the first aspect, in the Z direction, a second adjustment gasket is provided between the first pin seat arm of the upper lock pin seat and the first top connecting arm of the mounting ring, and between the second pin seat arm of the upper lock pin seat and the second top connecting arm of the mounting ring; the total number of second adjustment gaskets is fixed; by adjusting the number of second adjustment gaskets between the first pin seat arm of the upper lock pin seat and the first top connecting arm of the mounting ring, and the number of second adjustment gaskets between the second pin seat arm of the upper lock pin seat and the second top connecting arm of the mounting ring, the relative position of the upper lock pin seat and the mounting ring in the Z direction is changed, thereby realizing position adjustment of the upper lock pin and the mounting ring in the Z-axis direction; the lock pin seat fixing bolt passes through the upper lock pin seat, the mounting ring, the upper lock pin seat pressure plate and the second adjustment gasket and is locked.

[0019] In combination with the first aspect, in certain implementations of the first aspect, a backup gasket is provided between the first pin seat arm of the upper lock pin seat and the center beam of the upper lock pin seat pressure plate, and / or between the second pin seat arm of the upper lock pin seat and the center beam of the upper lock pin seat pressure plate; the backup gasket serves as a locking gasket between the upper lock pin seat and the upper lock pin seat pressure plate; when the Z-direction adjustment amount between the mounting ring and the upper lock pin seat is greater than the total thickness of the second adjustment gasket, the backup gasket is taken out and placed between the mounting ring and the upper lock pin seat to supplement the Z-direction adjustment amount.

[0020] In combination with the first aspect, in certain implementations of the first aspect, the device is installed on the landing gear; the device is aligned with the upper lock hook along the landing gear retraction movement trajectory, and is hooked by the upper lock hook as the landing gear is retracted, thereby reliably fixing the landing gear.

[0021] In a second aspect, a landing gear assembly is provided, comprising a landing gear upper lock pin fixing base device with adjustable three-axis positions as described in any one of the implementations of the first aspect above, and an upper lock hook and a landing gear, wherein the device is mounted on the landing gear; the device is aligned with the upper lock hook along the landing gear retraction motion trajectory, and is hooked by the upper lock hook as the landing gear is retracted, thereby reliably fixing the landing gear.

[0022] Compared with the prior art, the solution provided by the present invention includes at least the following beneficial technical effects:

[0023] The present invention employs shims for position adjustment between the upper lock pin base and the toothed plate in the Y-axis direction, and between the upper lock pin seat pressure plate and the upper lock pin seat in the Z-axis direction, achieving rigidity, a simple structure, and low manufacturing costs. In the X-axis direction, position adjustment is achieved by replacing the meshing teeth of the toothed plate and the upper lock pin seat pressure plate. This allows for independent adjustment of the landing gear upper lock pin position in the X, Y, and Z directions, improving the upper lock pin structure's ability to compensate for structural deformation and enhancing the reliability of the landing gear upper lock device under severe vibration conditions. By adjusting the component assembly sequence and aligning the toothed profile, fine adjustment of the upper lock pin position in the X, Y, and Z directions is achieved, improving the landing gear upper lock's ability to compensate for design, process, and operational deformation. BRIEF DESCRIPTION OF THE DRAWINGS

[0024] Figure 1 This is a diagram showing the working principle of a hook and ring type upper lock.

[0025] Figure 2 This is the exploded and assembled diagram of the upper locking pin fixing base device of the landing gear with adjustable three-axis position.

[0026] Figure 3 Schematic diagram of X-direction adjustment and fixation.

[0027] Figure 4Schematic diagram of Y-direction adjustment and fixation.

[0028] Figure 5 Schematic diagram of Z-direction adjustment and fixation.

[0029] Explanation of the accompanying drawings: 1. Upper lock pin, 2. Lock pin fixing bolt, 3. Upper lock pin seat, 4. Lock pin seat fixing bolt, 5. Mounting ring, 6. Second adjusting gasket, 7. Toothed plate, 8. Gasket bracket, 9. First adjusting gasket, 10. Upper lock pin seat pressure plate. DETAILED DESCRIPTION

[0030] The present invention will be described in further detail below with reference to the accompanying drawings and specific embodiments.

[0031] The invention provides a landing gear upper lock pin fixing base device with adjustable three-axis positions. Figure 1 The application scenario of the upper locking pin fixing base device is shown. Figure 1 The dashed line shows the uplock locked, while the solid line shows the uplock unlocked. The uplock pin mounting base assembly is mounted on the landing gear. The uplock hook is secured to the nacelle via the uplock-nacelle connection point. The uplock pin mounting base assembly aligns with the uplock hook along the landing gear retraction trajectory and is engaged by the uplock hook as the landing gear retracts, reliably securing the landing gear.

[0032] Figure 2 The figure shows a landing gear upper lock pin fixing base device with three-axis adjustable position, including an upper lock pin 1, a lock pin fixing bolt 2, an upper lock pin seat 3, a lock pin seat fixing bolt 4, a mounting ring 5, a second adjustment gasket 6, a toothed plate 7, a gasket bracket 8, a first adjustment gasket 9, and an upper lock pin seat pressure plate 10. Figure 2 The assembly diagram in FIG. 1 shows the structure of the upper lock pin seat pressure plate 10 after being cut open by 1 / 4.

[0033] The upper lock pin holder 3 includes a pin holder platform and two pin holder arms located on either side of the pin holder platform. The pin holder platform can be parallel to the XZ plane. The pin holder arms can be parallel to the XY plane. Both pin holder arms have through-holes on the side facing away from the pin holder platform. The upper lock pin 1 aligns with the through-holes in the two pin holder arms of the upper lock pin holder 3 and passes through the lock pin fixing bolt 2, thus achieving a rigid connection between the upper lock pin 1 and the upper lock pin holder 3 in all three directions.

[0034] The upper lock pin seat pressure plate 10 is I-shaped and includes a center beam and two protruding beams disposed on either side of the center beam. The upper lock pin seat pressure plate 10 passes through the upper lock pin seat 3, so that the center beam of the upper lock pin seat pressure plate 10 is located above the upper lock pin seat 3. The two pin seat arms of the upper lock pin seat 3 are sandwiched between the two protruding beams on either side of the center beam of the lock pin seat pressure plate 10. The mounting ring 5 (for mounting the piston rod) includes an annular body and two top connecting arms. The two top connecting arms are both located above the annular body, and between the two top connecting arms, the annular body forms a mounting platform arranged relatively parallel to the pin seat platform of the upper lock pin seat 3.

[0035] The center beam of the upper lock pin seat pressure plate 10 has a through hole, which is positioned opposite the through hole of the top connecting arm of the mounting ring 5 and opposite the through hole of the upper lock pin seat 3 pin seat arm near the pin seat platform. By passing through the lock pin seat fixing bolt 4, the upper lock pin seat pressure plate 10 and the mounting ring 5 are rigidly connected in all three directions: X, Y, and Z. The upper lock pin seat 3 pin seat arm is clamped between the center beam of the upper lock pin seat pressure plate 10 and the top connecting arm of the mounting ring 5. The upper lock pin seat 3 pin seat platform is clamped between the center beam of the upper lock pin seat pressure plate 10 and the mounting platform of the mounting ring 5.

[0036] Adjustment between the upper lock pin seat 3 and the upper lock pin seat pressure plate 10 in the X-direction is achieved via the toothed plate 7. The pin seat platform of the upper lock pin seat 3 has two slots, arranged on either side of the pin seat platform along the X-direction. Correspondingly, the toothed plate 7 has two protrusions, arranged on either side of the toothed plate 7 along the X-direction. The two protrusions of the toothed plate 7 respectively insert into the two slots of the upper lock pin seat 3. A tenon structure secures the upper lock pin seat 3 and the toothed plate 7 in the X-direction.

[0037] The toothed plate 7 is arranged between the pin seat platform of the upper lock pin seat 3 and the center beam of the upper lock pin seat pressure plate 10. The center beam of the upper lock pin seat pressure plate 10 has a first tooth structure on the side facing the toothed plate 7, and the toothed plate 7 has a second tooth structure on the side facing the upper lock pin seat pressure plate 10. The first tooth structure and the second tooth structure are meshed with each other. The tooth units of the first tooth structure and the tooth units of the second tooth structure both extend along the Z direction, and multiple tooth units are arranged along the X direction. Therefore, in the X direction, the lower part of the upper lock pin seat pressure plate 10 can be meshed with the toothed plate 7 through teeth. By replacing the meshing teeth of the toothed plate 7 and the upper lock pin seat pressure plate 10, the position adjustment in the x-axis direction between the mounting ring 5 and the upper lock pin seat 3 can be achieved, and then the position adjustment of the mounting ring 5 and the upper lock pin 1 in the X direction can be achieved, and the adjustment effect is as follows: Figure 3 Indicated by the dotted line.

[0038] like Figure 4As shown, in the Y direction, first adjustment shims 9 can be installed between the pin seat platform of the upper lock pin seat 3 and the center beam of the upper lock pin seat pressure plate 10, as well as between the pin seat platform of the upper lock pin seat 3 and the mounting platform of the mounting ring 5. The total number of first adjustment shims 9 can be relatively fixed, so the distance from the center beam of the upper lock pin seat pressure plate 10 to the mounting platform of the mounting ring 5 can be relatively fixed. By increasing the number of first adjustment shims 9 between the pin seat platform of the upper lock pin seat 3 and the mounting platform of the mounting ring 5, that is, reducing the number of first adjustment shims 9 between the pin seat platform of the upper lock pin seat 3 and the center beam of the upper lock pin seat pressure plate 10, the distance between the upper lock pin seat 3 and the mounting ring 5 in the Y direction can be increased. By reducing the number of first adjustment shims 9 between the pin seat platform of the upper lock pin seat 3 and the mounting platform of the mounting ring 5, that is, increasing the number of first adjustment shims 9 between the pin seat platform of the upper lock pin seat 3 and the center beam of the upper lock pin seat pressure plate 10, the distance between the upper lock pin seat 3 and the mounting ring 5 in the Y direction can be reduced.

[0039] In some embodiments, a shim bracket 8 may be provided on the side of the mounting platform of the mounting ring 5 facing the pin seat platform of the upper lock pin seat 3. The mounting ring 5 and the shim bracket 8 are in contact with each other in the Y direction. The pin seat platform of the upper lock pin seat 3 is located between the toothed plate 7 and the shim bracket 8. By increasing or decreasing the number of first adjustment shims 9 between the toothed plate 7 and the upper lock pin seat 3, and between the shim bracket 8 and the upper lock pin seat 3, the position adjustment of the upper lock pin seat 3 and the mounting ring 5 in the Y-axis direction can be achieved, thereby achieving the position adjustment of the upper lock pin 1 and the mounting ring 5 in the Y-axis direction. The center beam of the upper lock pin seat pressure plate 10 presses the upper lock pin seat 3, the toothed plate 7 and the shim bracket 8 against the mounting ring 5 through the first adjustment shim 9.

[0040] like Figure 5 As shown, in the Z direction, second adjustment washers 6 can be disposed between the first retaining arm of the upper lock pin seat 3 and the first top connecting arm of the mounting ring 5, and between the second retaining arm of the upper lock pin seat 3 and the second top connecting arm of the mounting ring 5. The total number of second adjustment washers 6 can be relatively fixed. By increasing / decreasing the number of second adjustment washers 6 between the first retaining arm of the upper lock pin seat 3 and the first top connecting arm of the mounting ring 5, that is, decreasing / increasing the number of second adjustment washers 6 between the second retaining arm of the upper lock pin seat 3 and the second top connecting arm of the mounting ring 5, the relative position of the upper lock pin seat 3 and the mounting ring 5 in the Z direction can be changed.

[0041] The Z-axis position adjustment of the upper lock pin seat 3 and the mounting ring 5 is achieved by replacing the position of the second adjustment washer 6 between the mounting ring 5 and the upper lock pin seat 3, ultimately achieving the Z-axis position adjustment of the upper lock pin 1 and the mounting ring 5. The lock pin seat fixing bolt 4 passes through the upper lock pin seat 3, the mounting ring 5, the upper lock pin seat pressure plate 10, and the second adjustment washer 6 and is tightened.

[0042] In some embodiments, a backup shim may be provided between the first pin holder arm of the upper lock pin holder 3 and the center beam of the upper lock pin holder pressure plate 10, and / or between the second pin holder arm of the upper lock pin holder 3 and the center beam of the upper lock pin holder pressure plate 10. This backup shim can serve as a locking shim between the upper lock pin holder 3 and the upper lock pin holder pressure plate 10. When the Z-axis adjustment between the mounting ring 5 and the upper lock pin holder 3 is large, this backup shim can be removed and placed between the mounting ring 5 and the upper lock pin holder 3 to supplement the Z-axis adjustment.

[0043] Although the present invention is disclosed above in terms of preferred embodiments, it is not intended to limit the present invention. Any person skilled in the art may make possible changes and modifications without departing from the spirit and scope of the present invention. Therefore, the scope of protection of the present invention shall be based on the scope defined by the claims of the present invention.

Claims

1. A landing gear upper lock pin fixing base device with three-axis adjustable position, characterized in that: It comprises an upper lock pin (1), an upper lock pin seat (3), a mounting ring (5), a second adjustment gasket (6), a toothed plate (7), a gasket bracket (8), a first adjustment gasket (9), and an upper lock pin seat pressure plate (10); The upper lock pin (1) and the upper lock pin seat (3) are rigidly connected, the mounting ring (5) and the upper lock pin seat pressure plate (10) are rigidly connected, the upper lock pin seat (3) includes a pin seat platform, the pin seat platform is located between the upper lock pin seat pressure plate (10) and the mounting ring (5), and the pin seat platform is parallel to the XZ plane; The toothed plate (7) is arranged between the upper lock pin seat (3) pin seat platform and the upper lock pin seat pressure plate (10), and is fixed relative to the upper lock pin seat (3) pin seat platform in the X direction; the upper lock pin seat pressure plate (10) has a first tooth structure on the side facing the toothed plate (7), and the toothed plate (7) has a second tooth structure on the side facing the upper lock pin seat pressure plate (10); the first tooth structure and the second tooth structure are meshed with each other; the tooth units of the first tooth structure and the tooth units of the second tooth structure both extend in the Z direction, and the plurality of tooth units are arranged in the X direction; by adjusting the relative meshing position of the first tooth structure and the second tooth structure, the relative position of the upper lock pin seat (3) and the mounting ring (5) in the X direction is changed; By adjusting the number of first adjustment washers (9) sandwiched between the upper lock pin seat (3) and the mounting ring (5), the first adjustment washers (9) are perpendicular to the Y direction, thereby changing the relative positions of the upper lock pin seat (3) and the mounting ring (5) in the Y direction; By adjusting the number of second adjustment gaskets (6) sandwiched between the upper lock pin seat (3) and the mounting ring (5), the second adjustment gaskets (6) are perpendicular to the Z direction, thereby changing the relative position of the upper lock pin seat (3) and the mounting ring (5) in the Y direction.

2. The device according to claim 1, characterized in that The upper lock pin seat (3) and the toothed plate (7) are fixed in the X direction by a tenon structure; wherein the pin seat platform of the upper lock pin seat (3) has two slots, and the two slots are arranged on both sides of the pin seat platform of the upper lock pin seat (3) along the X direction; the toothed plate (7) has two protrusions, and the two protrusions are arranged on both sides of the toothed plate (7) along the X direction; the two protrusions of the toothed plate (7) are respectively inserted into the two slots of the upper lock pin seat (3).

3. The device according to claim 1 or 2, characterized in that The upper lock pin seat (3) also includes two pin seat arms located on both sides of the pin seat platform; the pin seat arms are parallel to the XY plane; the two pin seat arms have through holes on the side away from the pin seat platform; the upper lock pin (1) is aligned with the through holes on the two pin seat arms of the upper lock pin seat (3) and passes through the lock pin fixing bolt (2) to achieve a rigid connection between the upper lock pin (1) and the upper lock pin seat (3) in the three directions of X, Y, and Z.

4. The device according to claim 3, characterized in that The upper lock pin seat pressure plate (10) is in an I-shape and includes a center beam and two protruding beams arranged on both sides of the center beam; the upper lock pin seat pressure plate (10) passes through the upper lock pin seat (3) so that the center beam of the upper lock pin seat pressure plate (10) is located above the upper lock pin seat (3), and the two pin seat arms of the upper lock pin seat (3) are both sandwiched between the two protruding beams on both sides of the center beam of the lock pin seat pressure plate (10); The mounting ring (5) comprises an annular body and two top connecting arms; the two top connecting arms are both located above the annular body, and between the two top connecting arms, the annular body forms a mounting platform arranged relatively parallel to the pin seat platform of the upper lock pin seat (3); The center beam of the upper lock pin seat pressure plate (10) has a through hole, and the through hole of the upper lock pin seat pressure plate (10) is arranged opposite to the through hole of the top connecting arm of the mounting ring (5), and is arranged opposite to the through hole of the upper lock pin seat (3) pin seat arm close to the pin seat platform; by passing through the lock pin seat fixing bolt (4), the upper lock pin seat pressure plate (10) and the mounting ring (5) are rigidly connected in the three directions of XYZ; wherein, the upper lock pin seat (3) pin seat arm is clamped between the center beam of the upper lock pin seat pressure plate (10) and the top connecting arm of the mounting ring (5); and the upper lock pin seat (3) pin seat platform is clamped between the center beam of the upper lock pin seat pressure plate (10) and the mounting platform of the mounting ring (5).

5. The device according to claim 4, characterized in that In the Y direction, a first adjusting gasket (9) is provided between the upper lock pin seat (3) pin seat platform and the upper lock pin seat pressure plate (10) center beam, and between the upper lock pin seat (3) pin seat platform and the mounting ring (5) mounting platform; the total number of the first adjusting gaskets (9) is fixed; and the distance between the upper lock pin seat (3) and the mounting ring (5) in the Y direction is adjusted by adjusting the number of the first adjusting gaskets (9) between the upper lock pin seat (3) pin seat platform and the mounting ring (5) mounting platform.

6. The device according to claim 5, characterized in that The mounting ring (5) mounting platform is provided with a gasket bracket (8) on one side facing the pin seat platform of the upper lock pin seat (3); the mounting ring (5) and the gasket bracket (8) are in contact with each other in the Y direction; the pin seat platform of the upper lock pin seat (3) is located between the toothed plate (7) and the gasket bracket (8); by increasing or decreasing the number of first adjusting gaskets (9) between the toothed plate (7) and the upper lock pin seat (3), and between the gasket bracket (8) and the upper lock pin seat (3), the position adjustment of the upper lock pin seat (3) and the mounting ring (5) in the Y-axis direction is achieved, thereby achieving the position adjustment of the upper lock pin (1) and the mounting ring (5) in the Y-axis direction; the center beam of the upper lock pin seat pressing plate (10) presses the upper lock pin seat (3), the toothed plate (7) and the gasket bracket (8) to the mounting ring (5) through the first adjusting gasket (9).

7. The device according to claim 4, characterized in that In the Z direction, a second adjusting gasket (6) is provided between the first pin seat arm of the upper lock pin seat (3) and the first top connecting arm of the mounting ring (5), and between the second pin seat arm of the upper lock pin seat (3) and the second top connecting arm of the mounting ring (5); the total number of the second adjusting gaskets (6) is fixed; by adjusting the number of the second adjusting gaskets (6) between the first pin seat arm of the upper lock pin seat (3) and the first top connecting arm of the mounting ring (5), and the number of the second adjusting gaskets (6) between the second pin seat arm of the upper lock pin seat (3) and the second top connecting arm of the mounting ring (5), the relative position of the upper lock pin seat (3) and the mounting ring (5) in the Z direction is changed, thereby realizing the position adjustment of the upper lock pin (1) and the mounting ring (5) in the Z axis direction; the lock pin seat fixing bolt (4) passes through the upper lock pin seat (3), the mounting ring (5), the upper lock pin seat pressure plate (10) and the second adjusting gasket (6) and is locked.

8. The device according to claim 4, characterized in that A backup gasket is provided between the first pin seat arm of the upper lock pin seat (3) and the center beam of the upper lock pin seat pressure plate (10), and / or between the second pin seat arm of the upper lock pin seat (3) and the center beam of the upper lock pin seat pressure plate (10); the backup gasket serves as a locking gasket between the upper lock pin seat (3) and the upper lock pin seat pressure plate (10); when the Z-direction adjustment amount between the mounting ring (5) and the upper lock pin seat (3) is greater than the total thickness of the second adjustment gasket (6), the backup gasket is taken out and placed between the mounting ring (5) and the upper lock pin seat (3) to supplement the Z-direction adjustment amount.

9. The device according to claim 1, characterized in that The device is installed on the landing gear; the device is aligned with the upper lock hook along the landing gear retraction movement trajectory, and is hooked by the upper lock hook as the landing gear retracts, thereby reliably fixing the landing gear.

10. A landing gear assembly, characterized in that: The landing gear assembly includes a three-axis position adjustable landing gear upper lock pin fixing base device as described in any one of claims 1 to 9, and also includes an upper lock hook and a landing gear, and the device is installed on the landing gear; the device is aligned with the upper lock hook along the landing gear retraction movement trajectory, and is hooked by the upper lock hook as the landing gear is retracted, thereby reliably fixing the landing gear.

Images