Airplane wheel maintenance bracket

Abstract

The utility model discloses an aircraft wheel maintenance bracket which comprises a lower shell, an upper shell is fixedly connected to the outer wall of the upper side of the lower shell, a bearing frame is arranged in the upper shell in a sliding mode, a first two-way screw rod is rotatably arranged between the inner walls of the two sides of the bearing frame, and two symmetrically-distributed first moving blocks are arranged on the rod wall of the first two-way screw rod in a threaded and sleeved mode. Compared with the prior art, the airplane wheel maintenance bracket has the advantages that the universal wheels can extend out of the lower shell to support the lower shell to move when the airplane wheel maintenance bracket needs to be moved through the arranged moving assembly, and when the airplane wheel is maintained, the universal wheels can be retracted into the lower shell, so that the lower shell integrally touches the ground, the contact area between the lower shell and the ground is large, and the service life of the airplane wheel maintenance bracket is prolonged. The stability is improved; through the arranged lifting assembly, the bearing frame can ascend and descend, when the airplane wheel is disassembled, the bearing frame ascends, the airplane wheel is supported by the supporting plate, and in this way, the airplane wheel can be easily separated from the wheel shaft.

Description

Technical Field

[0001] The utility model relates to the technical field of aircraft wheel maintenance, and particularly relates to an aircraft wheel maintenance bracket. Background Technique

[0002] The wheel is an important part of the aircraft landing gear system and bears all the loads of the aircraft during parking, taxiing, takeoff and landing.

[0003] A Chinese patent with the publication number CN217649665U discloses an aircraft wheel maintenance bracket. The aircraft wheel is composed of an aircraft tire and an aircraft hub connected coaxially. The maintenance bracket includes an omnidirectional moving platform. On the omnidirectional moving platform, clamps located on both sides of the aircraft wheel are symmetrically arranged, and the lower curved surface of the aircraft tire contacts the limit block. The clamps are located on both sides of the limit block, and the limit block, the clamps and the omnidirectional moving platform are connected as a whole through a sliding lead screw and a guide rail. The clamps can clamp both sides of the aircraft tire by moving towards each other along the guide rail. On one side of the omnidirectional moving platform, a transmission steering mechanism is provided. The transmission steering mechanism includes a transmission rod with a handwheel, and a gear meshing with the sliding lead screw is arranged at the lower end of the transmission rod.

[0004] However, during the process of maintaining the wheel, the stability of the bracket is very important. Although the omnidirectional wheels are equipped with braking devices, the omnidirectional wheels are in point contact with the ground, and the contact area is small. During maintenance, due to the small stress area, the whole equipment is prone to slip. Moreover, when disassembling the wheel, the wheel presses on the limit block. In this way, there will be a downward pressure when the wheel is disengaged from the wheel axle, and it is not easy to pull out the bracket. Therefore, we propose a new aircraft wheel maintenance bracket. Content of the Utility Model

[0005] The main purpose of the utility model is to propose an aircraft wheel maintenance bracket, which can effectively solve the problems in the background technique.

[0006] To achieve the above object, the technical solution adopted by the present utility model is as follows: An aircraft wheel maintenance bracket, including a lower housing, an upper housing is fixedly connected to the outer wall on the upper side of the lower housing, a bearing bracket is slidably arranged in the upper housing, a first bidirectional screw is rotatably arranged between the inner walls on both sides of the bearing bracket, two symmetrically distributed first moving blocks are threadedly sleeved on the rod wall of the first bidirectional screw, a first worm gear is fixedly sleeved at one end of the first bidirectional screw, a first worm that meshes with the first worm gear is rotatably arranged on one side of the inner wall on the lower side of the bearing bracket, the upper end of the first worm passes through the upper side wall of the bearing bracket and is fixedly connected to a first hand wheel, an L-shaped connecting rod is fixedly connected to the upper side wall of the first moving block, a limiting block is fixedly connected to the other end of the L-shaped connecting rod, a support plate is fixedly connected between the inner walls on the front and rear sides of the bearing bracket, a support plate is fixedly connected to the upper side wall of the support plate, a moving component is arranged inside the lower housing, and a lifting component is arranged inside the upper housing.

[0007] As a further description of the above technical solution, the moving component includes a mounting plate, universal wheels, a screw, a sleeve, a second worm gear, a second worm and a motor. A mounting plate is slidably arranged between the inner walls on both sides of the lower housing. Universal wheels are installed at the four corners of the bottom wall of the mounting plate. A screw is rotatably connected to the center of the upper inner wall of the lower housing. A sleeve is threadedly sleeved on the outer side of the screw. The bottom wall of the sleeve is fixedly connected to the mounting plate. A second worm gear is fixedly sleeved at the upper end of the screw. A motor is installed on the outer wall at the rear side of the lower housing. The output shaft of the motor extends into the lower housing and is fixedly connected to a second worm that cooperates with the second worm gear. The front end of the second worm is rotatably connected to the front inner wall of the lower housing.

[0008] As a further description of the above technical solution, the lifting component includes a groove, a second bidirectional screw, a second hand wheel, a second moving block and a connecting rod. A groove is formed on the lower inner wall of the upper housing. Two symmetrically distributed second moving blocks are slidably arranged in the groove. A second bidirectional screw is rotatably connected to one side wall of the groove. The other end of the second bidirectional screw extends to the outside of the upper housing and is fixedly connected to a second hand wheel. Both of the second moving blocks are threadedly sleeved on the second bidirectional screw. A connecting rod is hinged to the upper side wall of the second moving block. The other end of the connecting rod is hinged to the bottom wall of the bearing bracket.

[0009] As a further description of the above technical solution, first guide rods are respectively fixedly connected between the inner walls on both sides of the bearing bracket and on the front and rear sides of the first bidirectional screw. The first moving block is slidably matched with the first guide rod.

[0010] As a further description of the above technical solution, second guide rods are slidably arranged on the inner walls on the front and rear sides of the lower housing. The other ends of the second guide rods are fixedly connected to the sleeve.

[0011] As a further description of the above technical solution, the two link rods are distributed in an inverted V shape.

[0012] As a further description of the above technical solution, the bottom wall of the lower housing is provided with an anti-slip pad.

[0013] Compared with the prior art, the utility model has the following beneficial effects:

[0014] 1. By providing the moving component, when it is necessary to move the device, the universal wheels extend out of the lower housing to support the lower housing for movement. When repairing the wheels, the universal wheels can be retracted into the lower housing, making the whole lower housing touch the ground, with a large contact area with the ground, thus improving the stability.

[0015] 2. By providing the lifting component, the bearing bracket can be lifted and lowered. When disassembling the wheels, the bearing bracket is raised, and the support plate holds the wheels. In this way, it will be easier to disengage the wheels from the axle. Description of the Drawings

[0016] Figure 1 is a schematic diagram of the overall structure of a wheel maintenance bracket for an aircraft of the utility model;

[0017] Figure 2 is a sectional view of the bearing bracket of a wheel maintenance bracket for an aircraft of the utility model;

[0018] Figure 3 is a sectional view of the lower housing of a wheel maintenance bracket for an aircraft of the utility model;

[0019] Figure 4 is a sectional view of the sleeve of a wheel maintenance bracket for an aircraft of the utility model;

[0020] Figure 5 is a schematic diagram of the structure of the lifting component of a wheel maintenance bracket for an aircraft of the utility model.

[0021] In the figure: 1, lower housing; 2, upper housing; 3, bearing bracket; 31, first bidirectional screw; 32, first moving block; 33, first worm gear; 34, first worm; 35, first handwheel; 36, L-shaped link rod; 37, limit block; 38, support plate; 39, support plate; 4, moving component; 5, lifting component; 41, mounting plate; 42, universal wheel; 43, screw; 44, sleeve; 45, second worm gear; 46, second worm; 47, motor; 51, groove; 52, second bidirectional screw; 53, second handwheel; 54, second moving block; 55, link rod; 310, first guide rod; 11, second guide rod. Detailed Embodiments

[0022] To make the technical means, creative features, and achieved objectives and effects of the present utility model easy to understand, the present utility model will be further described below in conjunction with specific embodiments.

[0023] In the description of the present utility model, it should be noted that the orientation or positional relationship indicated by the terms "upper", "lower", "inner", "outer", "front end", "rear end", "both ends", "one end", "the other end", etc. is based on the orientation or positional relationship shown in the drawings. It is only for the convenience of describing the present utility model and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of the present utility model. In addition, the terms "first" and "second" are only used for descriptive purposes and cannot be understood as indicating or implying relative importance.

[0024] In the description of the present utility model, it should be noted that unless otherwise clearly specified and limited, the terms "installed", "provided with", "connected", etc. should be understood in a broad sense. For example, "connected" can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be directly connected or indirectly connected through an intermediate medium, and it can be the communication inside two elements. For those of ordinary skill in the art, the specific meanings of the above terms in the present utility model can be understood according to specific circumstances.

[0025] Please refer to Figures 1-5, the present utility model provides a technical solution: an aircraft wheel maintenance bracket, including a lower housing 1, the bottom wall of the lower housing 1 is provided with an anti-slip pad to increase the friction with the ground. The upper outer wall of the lower housing 1 is fixedly connected with an upper housing 2. A bearing bracket 3 is slidably arranged in the upper housing 2. A first bidirectional screw 31 is rotatably arranged between the inner walls on both sides of the bearing bracket 3. Two symmetrically distributed first moving blocks 32 are threadedly sleeved on the rod wall of the first bidirectional screw 31. One end of the first bidirectional screw 31 is fixedly sleeved with a first worm gear 33. A first worm 34 meshing with the first worm gear 33 is rotatably arranged on one side of the inner wall of the lower side of the bearing bracket 3. The upper end of the first worm 34 passes through the upper side wall of the bearing bracket 3 and is fixedly connected with a first handwheel 35. The upper side wall of the first moving block 32 is fixedly connected with an L-shaped connecting rod 36. The other end of the L-shaped connecting rod 36 is fixedly connected with a limiting block 37. A support plate 38 is fixedly connected between the inner walls on the front and rear sides of the bearing bracket 3. The upper side wall of the support plate 38 is fixedly connected with a support plate 39, and the support plate 39 can support the bottom of the wheel. Rotating the first handwheel 35 can drive the first worm 34 to rotate. When the first worm 34 rotates, it can make the first worm gear 33 drive the first bidirectional screw 31 to rotate, so that the two first moving blocks 32 approach each other. During the approaching process, the two limiting blocks 37 clamp the wheel. After clamping the wheel, the device can be pulled to separate the wheel from the wheel axle, thus completing the disassembly of the wheel. Between the inner walls on both sides of the bearing bracket 3 and on the front and rear sides of the first bidirectional screw 31, first guide rods 310 are respectively fixedly connected. The first moving block 32 is slidably matched with the first guide rod 310, and the first guide rod 310 can guide and limit the first moving block 32.

[0026] A moving assembly 4 is provided inside the lower housing 1, and the moving assembly 4 includes a mounting plate 41, a universal wheel 42, a screw 43, a sleeve 44, a second worm gear 45, a second worm 46 and a motor 47. A mounting plate 41 is slidably provided between the inner walls on both sides of the lower housing 1, and universal wheels 42 are installed at the four corners of the bottom wall of the mounting plate 41. A screw 43 is rotatably connected to the center of the upper inner wall of the lower housing 1, and a sleeve 44 is provided on the outer thread of the screw 43. The bottom wall of the sleeve 44 is fixedly connected to the mounting plate 41, and a second worm gear 45 is fixedly provided on the upper end of the screw 43. A motor 47 is installed on the outer wall of the rear side of the lower housing 1, and the output shaft of the motor 47 extends into the lower housing 1 and is fixedly connected to a second worm gear matched with the second worm gear 45 46, the front end of the second worm 46 is rotatably connected to the front inner wall of the lower shell 1, and the output shaft of the motor 47 can drive the second worm 46 to rotate. When the second worm 46 rotates, the second worm wheel 45 can drive the screw 43 to rotate. When the screw 43 rotates, the sleeve 44 can move upward under the limit of the second guide rod 11. The upward movement of the sleeve 44 will drive the mounting plate 41 and the universal wheel 42 to move upward, so that the universal wheel 42 is retracted into the lower shell 1, so that the lower shell 1 is grounded as a whole, and the contact area with the ground is larger. It is not easy to slip under the force during maintenance, which improves stability. When it needs to move, the motor 47 is controlled to reverse. After transmission, the universal wheel 42 will extend out of the lower shell 1 and can be moved after it is propped up.

[0027] The upper shell 2 is provided with a lifting assembly 5 inside, and the lifting assembly 5 includes a groove 51, a second bidirectional screw 52, ​​a second hand wheel 53, a second moving block 54 and a connecting rod 55. The lower inner wall of the upper shell 2 is provided with a groove 51, and two symmetrically distributed second moving blocks 54 are slidably arranged in the groove 51. The second bidirectional screw 52 is rotatably connected to one side wall of the groove 51, and the other end of the second bidirectional screw 52 extends to the outside of the upper shell 2 and is fixedly connected to the second hand wheel 53. The two second moving blocks 54 are both screwed. The grooved sleeve is arranged on the second bidirectional screw 52, ​​and a connecting rod 55 is hinged on the upper side wall of the second movable block 54. The two connecting rods 55 are distributed in an inverted V shape. The other end of the connecting rod 55 is hinged to the bottom wall of the supporting bracket 3. The second hand wheel 53 is rotated to drive the second bidirectional screw 52 to rotate. When the second bidirectional screw 52 rotates, the two second movable blocks 54 can be brought closer to each other. Under the action of the connecting rod 55, the supporting bracket 3 rises upward, so that the support plate 39 supports the machine wheel. This method will be easier to make the machine wheel separate from the wheel axle.

[0028] A second guide rod 11 is slidably provided on the front and rear inner walls of the lower shell 1. The other end of the second guide rod 11 is fixedly connected to the sleeve 44. The second guide rod 11 can limit the sleeve 44 so that it cannot rotate and can only move up and down.

[0029] It should be noted that the present utility model is an aircraft wheel maintenance bracket. When in use, the device is moved to the side of the aircraft, the wheel is lifted by a jack, the nut fixing the wheel is removed using tools, and then the device is pushed under the wheel. Rotating the second handwheel 53 drives the second bidirectional screw 52 to rotate. When the second bidirectional screw 52 rotates, the two second moving blocks 54 can approach each other. Under the action of the connecting rod 55, the supporting bracket 3 rises, causing the supporting plate 39 to support the wheel. Then, rotating the first handwheel 35 drives the first worm 34 to rotate. When the first worm 34 rotates, the first worm gear 33 can drive the first bidirectional screw 31 to rotate, so that the two first moving blocks 32 approach each other. During the approaching process, the two limiting blocks 37 clamp the wheel. Then, the device is pulled to disengage the wheel from the wheel axle. Then, the second handwheel 53 is reversed. After transmission, the supporting bracket 3 descends and resets. Then, maintenance and repair of the wheel are carried out. Before maintenance, the output shaft of the motor 47 can drive the second worm 46 to rotate. When the second worm 46 rotates, the second worm gear 45 can drive the screw 43 to rotate. When the screw 43 rotates, the sleeve 44 can move upward under the limitation of the second guide rod 11. The upward movement of the sleeve 44 drives the mounting plate 41 and the universal wheel 42 to move upward, causing the universal wheel 42 to retract into the lower housing 1, making the whole lower housing 1 touch the ground, with a larger contact area with the ground, and it is not easy to slip during the force application in the maintenance process, improving the stability.

[0030] The above shows and describes the basic principles, main features and advantages of the present utility model. Those skilled in the art of this industry should understand that the present utility model is not limited by the above embodiments. What is described in the above embodiments and the specification only illustrates the principle of the present utility model. Without departing from the spirit and scope of the present utility model, the present utility model will have various changes and improvements, and these changes and improvements all fall within the scope of the present utility model claimed. The scope of protection claimed by the present utility model is defined by the appended claims and their equivalents.

Claims

1. An aircraft wheel maintenance bracket, comprising a lower housing (1), characterized in that: The upper shell (2) is fixedly connected to the upper outer wall of the lower shell (1), a support bracket (3) is slidably provided in the upper shell (2), a first bidirectional screw (31) is rotatably provided between the inner walls on both sides of the support bracket (3), two symmetrically distributed first moving blocks (32) are threadedly sleeved on the rod wall of the first bidirectional screw (31), a first worm gear (33) is fixedly sleeved on one end of the first bidirectional screw (31), a first worm gear (34) meshing with the first worm gear (33) is rotatably provided on one side of the lower inner wall of the support bracket (3), and the first The upper end of a worm (34) passes through the upper side wall of the support frame (3) and is fixedly connected to a first hand wheel (35); an L-shaped connecting rod (36) is fixedly connected to the upper side wall of the first moving block (32); the other end of the L-shaped connecting rod (36) is fixedly connected to a limiting block (37); a support plate (38) is fixedly connected between the front and rear inner walls of the support frame (3); a support plate (39) is fixedly connected to the upper side wall of the support plate (38); a moving assembly (4) is provided inside the lower shell (1); and a lifting assembly (5) is provided inside the upper shell (2).

2. The aircraft wheel maintenance bracket according to claim 1, characterized in that: The moving assembly (4) comprises a mounting plate (41), a universal wheel (42), a screw (43), a sleeve (44), a second worm wheel (45), a second worm (46) and a motor (47); a mounting plate (41) is slidably provided between the inner walls on both sides of the lower housing (1); universal wheels (42) are installed at four corners on the bottom wall of the mounting plate (41); a screw (43) is rotatably connected at the center of the upper inner wall of the lower housing (1); and the outer threaded sleeve of the screw (43) is A sleeve (44) is provided, the bottom wall of the sleeve (44) is fixedly connected to the mounting plate (41), the upper end of the screw rod (43) is fixedly sleeved with a second worm gear (45), a motor (47) is installed on the rear outer wall of the lower housing (1), the output shaft of the motor (47) extends into the lower housing (1) and is fixedly connected to a second worm (46) matched with the second worm gear (45), and the front end of the second worm (46) is rotatably connected to the front inner wall of the lower housing (1).

3. The aircraft wheel maintenance bracket according to claim 1, characterized in that: The lifting assembly (5) comprises a groove (51), a second bidirectional screw (52), a second hand wheel (53), a second moving block (54) and a connecting rod (55). The lower inner wall of the upper shell (2) is provided with a groove (51), and two symmetrically distributed second moving blocks (54) are slidably arranged in the groove (51). A second bidirectional screw (52) is rotatably connected to one side wall of the groove (51), and the other end of the second bidirectional screw (52) extends to the outside of the upper shell (2) and is fixedly connected to the second hand wheel (53). The two second moving blocks (54) are both threadedly sleeved on the second bidirectional screw (52), and a connecting rod (55) is hinged on the upper side wall of the second moving block (54), and the other end of the connecting rod (55) is hinged to the bottom wall of the supporting bracket (3).

4. The aircraft wheel maintenance bracket according to claim 1, characterized in that: A first guide rod (310) is fixedly connected between the inner walls of both sides of the support bracket (3) and located at the front and rear sides of the first bidirectional screw rod (31), and the first moving block (32) is slidably matched with the first guide rod (310).

5. The aircraft wheel maintenance bracket according to claim 2, characterized in that: A second guide rod (11) is slidably provided on both the front and rear inner walls of the lower shell (1), and the other end of the second guide rod (11) is fixedly connected to the sleeve (44).

6. The aircraft wheel maintenance bracket according to claim 3, characterized in that: The two connecting rods (55) are distributed in an inverted V shape.

7. The aircraft wheel maintenance bracket according to claim 1, characterized in that: The bottom wall of the lower shell (1) is provided with an anti-slip pad.

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