Quick dragging structure for aircraft undercarriage

Abstract

The utility model discloses a quick dragging structure for an aircraft undercarriage, and relates to the technical field of quick dragging, the quick dragging structure comprises a dragging vehicle, a lifting mechanism is arranged on the left side of the dragging vehicle, and a clamping mechanism is arranged on the left side of the dragging vehicle. At the moment, a handle can be rotated, then the handle drives worms on the two sides to rotate, then the worms drive worm wheels to rotate, at the moment, the worm wheels drive threaded rods on the inner wall to rotate, then the threaded rods on the two sides start to rotate, adjusting blocks on the outer surfaces of the threaded rods start to move, and at the moment, the adjusting blocks slide on the surface of a rotating shaft; and then, the handle is rotated to adjust the adjusting block to a proper position, so that the device can adapt to undercarriages with different heights, the stable connection is ensured, the stress distribution can be optimized, the damage of parts is reduced, and the device can be flexibly adjusted when meeting complex terrains and parking posture changes.

Description

Technical Field

[0001] This utility model belongs to the field of rapid towing technology, and in particular relates to a rapid towing structure for aircraft landing gear. Background Technology

[0002] A rapid towing structure for aircraft landing gear is of great significance in airport ground operations. It can effectively protect aircraft and surrounding facilities, greatly reduce aircraft ground dwell time, improve airport operational efficiency, and make flight turnaround smoother. It is an indispensable key piece of equipment for modern airports.

[0003] If the clamps of the aircraft landing gear quick towing device cannot be raised or lowered, it may be difficult to adapt to landing gears of different heights, resulting in significant limitations. This could lead to unstable connections, loosening or even detachment during towing, endangering aircraft safety. Furthermore, it is impossible to flexibly adjust the height of the stress point according to the landing gear structure and towing requirements, which could easily cause uneven stress on the landing gear and accelerate component wear and damage. Therefore, we provide a quick towing structure for aircraft landing gear. Utility Model Content

[0004] The purpose of this utility model is to provide a quick-towing structure for aircraft landing gear. By rotating the threaded rod, the adjusting block can be adjusted up and down. This solves the problem that if the clamp of the existing quick-towing device for aircraft landing gear cannot be raised or lowered, it may be difficult to adapt to landing gears of different heights, which is extremely limited and may lead to unstable connection, loosening or even falling off during the towing process.

[0005] To solve the above-mentioned technical problems, this utility model is achieved through the following technical solution:

[0006] This utility model is a rapid towing structure for aircraft landing gear, including a towing vehicle, a lifting mechanism and a clamping mechanism on the left side of the towing vehicle;

[0007] The lifting mechanism includes a hydraulic housing, the inner wall of which is fixedly connected to the outer wall of the towing vehicle. A shock-absorbing spring is fitted on the outer surface of the hydraulic housing. A base is fixedly connected to the end of the outer wall of the shock-absorbing spring away from the towing vehicle. A hydraulic disc is slidably connected to the inner wall of the hydraulic housing. A hydraulic hole is opened inside the hydraulic disc. A hydraulic rod is fixedly connected to the outer wall of the hydraulic disc. The outer wall of the hydraulic rod is fixedly connected to the inner wall of the base. A fixing block is fixedly connected to the top of the base. A worm gear is rotatably connected inside the fixing block. A handle is fixedly connected to the outer surface of the worm gear. A threaded rod is fixedly connected to the top of the base. A worm wheel is rotatably connected to the outer surface of the threaded rod and meshes with the worm gear. A limit rod is fixedly connected to the top of the base. A top plate is rotatably connected to the top of the threaded rod. A caster wheel is fixedly connected to the bottom of the base. The limit rod can limit the adjustment block when it rotates on the surface of the threaded rod.

[0008] Furthermore, there are two hydraulic housings, two shock-absorbing springs, and two threaded rods. The bottom of the top plate is fixedly connected to the top of the limiting rod. The shock-absorbing springs can effectively reduce vibration and improve the stability of the equipment.

[0009] Furthermore, the clamping mechanism includes an adjusting block, the inner wall of which is threadedly connected to the outer surface of the threaded rod. By rotating the adjusting block on the surface of the threaded rod, the position of the clamping mechanism can be adjusted.

[0010] Furthermore, the inner wall of the adjusting block is slidably connected to the outer surface of the limiting rod, and a motor is fixedly connected to the outer wall of the adjusting block. The bottom output shaft of the motor is fixedly connected to a rotating shaft through a coupling, and the motor can drive the rotating shaft to rotate.

[0011] Furthermore, a gear is fixedly connected to the outer surface of the rotating shaft, and a groove is provided on the inner wall of the adjusting block. A sliding groove is provided inside the groove, which can limit the position of the rack.

[0012] Furthermore, a rack is slidably connected to the inner wall of the sliding groove. There are two racks in total. The rack meshes with a gear. A limit block is fixedly connected to the outer wall of the rack. The rack can drive the limit block to move.

[0013] Furthermore, there are two limiting blocks. A clamping plate is fixedly connected to the outer wall of the limiting block, and a limiting plate is fixedly connected to the inner wall of the groove. The landing gear can be connected and clamped through the clamping plate.

[0014] Furthermore, a limiting groove is formed on the inner wall of the limiting plate, and a limiting block is slidably connected to the inner wall of the limiting groove. The limiting groove can limit the limiting block, thereby limiting the clamping block.

[0015] This utility model has the following beneficial effects:

[0016] 1. This utility model, by setting a threaded rod, allows for adjustment of the clamping mechanism position. Turning the handle rotates the worm gears on both sides, which in turn rotate the worm wheel. The worm wheel then rotates the threaded rod on the inner wall, causing the threaded rods on both sides to rotate. Simultaneously, the adjusting block on the outer surface of the threaded rod begins to move, sliding on the rotating shaft surface to achieve a limit position. Then, simply turning the handle adjusts the adjusting block to the appropriate position. This allows for adaptation to landing gears of different heights, ensuring a stable connection, optimizing force distribution, reducing component damage, and flexibly adjusting to complex terrain and changing parking postures. It reduces operational difficulty, significantly improves towing efficiency, and facilitates smooth ground operations.

[0017] 2. This utility model, by incorporating a rack and pinion mechanism, allows for seamless connection of the landing gear. When the device is to connect to the landing gear, the motor is activated, driving a rotating shaft. This shaft, in turn, rotates a surface gear, which in turn moves the top and bottom racks. The racks then slide within a sliding groove, simultaneously moving two side limit blocks. These limit blocks slide within their respective grooves, and subsequently, they move clamping plates towards the center of the adjusting block, firmly clamping the landing gear before towing begins. This significantly reduces ground handling preparation time, enabling faster flight transfers, improving airport operational efficiency, reducing aircraft dwell time on the ground, mitigating flight delays caused by connection delays, and enhancing the timeliness and reliability of air transport.

[0018] Of course, any product implementing this utility model does not necessarily need to achieve all of the advantages described above at the same time. Attached Figure Description

[0019] To more clearly illustrate the technical solutions of the embodiments of this utility model, the accompanying drawings used in the description of the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0020] Figure 1 This is a schematic diagram of the overall structure of this utility model;

[0021] Figure 2 This utility model Figure 1 Enlarged structural diagram of section A in the middle;

[0022] Figure 3 This is a cross-sectional view of the shock-absorbing spring of this utility model;

[0023] Figure 4 This is a schematic diagram of the adjusting block structure of this utility model;

[0024] Figure 5 This is a cross-sectional view of the adjusting block of this utility model.

[0025] The attached diagram lists the components represented by each number as follows:

[0026] 1. Lifting mechanism; 101. Towing vehicle; 102. Base; 103. Fixing block one; 104. Handle; 105. Worm gear; 106. Threaded rod; 107. Worm wheel; 108. Limiting rod; 109. Caster wheel; 110. Shock-absorbing spring; 111. Top plate; 112. Hydraulic housing; 113. Hydraulic disc; 114. Hydraulic rod; 115. Hydraulic hole; 2. Clamping mechanism; 201. Adjusting block; 202. Motor; 203. Groove; 204. Limiting plate; 205. Limiting slot; 206. Limiting block; 207. Clamping plate; 208. Rotating shaft; 209. Gear; 210. Rack; 211. Sliding groove. Detailed Implementation

[0027] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the scope of protection of the present utility model.

[0028] Please see Figure 1-5 As shown, this utility model is a quick towing structure for aircraft landing gear, including a towing vehicle 101, a lifting mechanism 1 on the left side of the towing vehicle 101, and a clamping mechanism 2 on the left side of the towing vehicle 101.

[0029] The lifting mechanism 1 includes a hydraulic housing 112, the inner wall of which is fixedly connected to the outer wall of the towing vehicle 101. A shock-absorbing spring 110 is fitted on the outer surface of the hydraulic housing 112. The shock-absorbing spring 110 absorbs the vibration generated during the movement of the towing vehicle 101. A base 102 is fixedly connected to the end of the outer wall of the shock-absorbing spring 110 away from the towing vehicle 101. A hydraulic disc 113 is slidably connected to the inner wall of the hydraulic housing 112. A hydraulic hole 115 is opened inside the hydraulic disc 113. A hydraulic rod 114 is fixedly connected to the outer wall of the hydraulic disc 113. The hydraulic rod 114 can... When the tow truck 101 brakes suddenly or encounters a strong bump, the base 102 compresses the shock-absorbing spring 110, which then presses against the hydraulic rod 114. The hydraulic rod 114 then presses against the hydraulic disc 113, which slides within the hydraulic housing 112 filled with hydraulic oil. Hydraulic oil is then slowly pumped from right to left through the hydraulic port 115, effectively absorbing the vibration. The outer wall of the hydraulic rod 114 is fixedly connected to the inner wall of the base 102. A fixing block 103 is fixedly connected to the top of the base 102, and the fixing block 103 rotates internally. A worm gear 105 is connected to the base 102. Rotating the handle 104 rotates the worm gear 105, which in turn rotates the worm wheel 107, thereby rotating the threaded rod 106. The handle 104 is fixedly connected to the outer surface of the worm gear 105. The threaded rod 106 is fixedly connected to the top of the base 102. Rotating the threaded rod 106 moves the adjusting block 201, thus adjusting the height of the clamping mechanism 2. The worm wheel 107 is rotatably connected to the outer surface of the threaded rod 106, meshing with the worm gear 105. A limit rod 108 is fixedly connected to the top of the base 102. The limit rod 108 can limit the adjustment block 201, making it move horizontally in a straight line. The top of the threaded rod 106 is rotatably connected to the top plate 111. The bottom of the base 102 is fixedly connected to the universal wheel 109. The universal wheel 109 can drive the base 102 to move in conjunction with the towing vehicle 101. There are two hydraulic housings 112, two shock-absorbing springs 110, and two threaded rods 106. The bottom of the top plate 111 is fixedly connected to the top of the limit rod 108. The clamping mechanism 2 includes an adjustment block 201. The inner wall of the adjustment block 201 is threadedly connected to the outer surface of the threaded rod 106.

[0030] The inner wall of the adjusting block 201 is slidably connected to the outer surface of the limiting rod 108. A motor 202 is fixedly connected to the outer wall of the adjusting block 201. The motor 202 can drive the rotating shaft 208 to rotate, and then the rotating shaft 208 can drive the gear 209 to rotate, thereby driving the racks on both sides to move. The bottom output shaft of the motor 202 is fixedly connected to the rotating shaft 208 through a coupling. The gear 209 is fixedly connected to the outer surface of the rotating shaft 208. A groove 203 is provided on the inner wall of the adjusting block 201. A sliding groove 211 is provided inside the groove 203. A rack 210 is slidably connected to the inner wall of the sliding groove 211. The rack 210 slides in the sliding groove 211, which can limit its movement. There are two racks 210. The rack 210 meshes with the gear 209. A limiting block 206 is fixedly connected to the outer wall of the rack 210.

[0031] Two limit blocks 206 are provided. When the limit blocks 206 move, they slide in the limit grooves 205 to limit the clamping plate 207, so that it moves horizontally in a straight line and clamps the landing gear. The clamping plate 207 is fixedly connected to the outer wall of the limit block 206, and the limit plate 204 is fixedly connected to the inner wall of the groove 203. The limit groove 205 is opened in the inner wall of the limit plate 204, and the limit block 206 is slidably connected to the inner wall of the limit groove 205.

[0032] One specific application of this embodiment is:

[0033] When the position of clamping mechanism 2 needs to be adjusted, handle 104 can be turned. Handle 104 will then drive the worm gears 105 on both sides to rotate, which in turn drives the worm wheel 107 to rotate. The worm wheel 107 will then drive the threaded rod 106 on the inner wall to rotate, and the threaded rods 106 on both sides will start to rotate. Then the adjusting block 201 on the outer surface of the threaded rod 106 will start to move. At this time, the adjusting block 201 will slide on the surface of the rotating shaft 208 to complete the limit. Then, simply turn the handle to adjust the adjusting block 201 to the appropriate position. When encountering bumps during the dragging process, the shock-absorbing spring 110 will be compressed to effectively absorb the shock. When the equipment encounters sudden braking, the shock-absorbing spring 110 will be compressed, and then the base 102 will press down the hydraulic rod 114. At this time, the hydraulic rod 114 will drive the hydraulic plate 113. The device slides within the hydraulic housing 112, and the hydraulic holes 115 inside the hydraulic disc 113 slowly deliver hydraulic oil from the right side to the left side, thus counteracting the vibration. When the device is to connect the landing gear, the motor 202 can be started. The motor 202 will then drive the rotating shaft 208 to rotate, which in turn drives the gear 209 on the surface to rotate. The gear 209 will then drive the racks 210 at the top and bottom to move. The racks 210 will then begin to slide in the sliding groove 211, and at the same time, the racks 210 will drive the limit blocks 206 on both sides to move. At this time, the limit blocks 206 will slide in the limit groove 205, and then the limit blocks 206 on both sides will drive the clamping plates 207 to move. The clamping plates 207 on both sides will then move towards the center point of the adjusting block 201 until the landing gear is firmly clamped, and then the towing can begin.

[0034] In the description of this specification, references to terms such as "an embodiment," "example," "specific example," etc., indicate that a specific feature, structure, material, or characteristic described in connection with that embodiment or example is included in at least one embodiment or example of the present invention. In this specification, the illustrative expressions of the above terms do not necessarily refer to the same embodiment or example. Furthermore, the specific features, structures, materials, or characteristics described may be combined in any suitable manner in one or more embodiments or examples.

[0035] The preferred embodiments of this utility model disclosed above are merely illustrative of the present utility model. These preferred embodiments do not exhaustively describe all details, nor do they limit the present utility model to the specific implementations described. Clearly, many modifications and variations can be made based on the content of this specification. This specification selects and specifically describes these embodiments to better explain the principles and practical applications of the present utility model, thereby enabling those skilled in the art to better understand and utilize it. This utility model is limited only by the claims and their full scope and equivalents.

Claims

1. A rapid towing structure for aircraft landing gear, comprising a towing vehicle (101), characterized in that: The towing vehicle (101) is provided with a lifting mechanism (1) on the left side and a clamping mechanism (2) on the left side of the towing vehicle (101); The lifting mechanism (1) includes a hydraulic housing (112), the inner wall of which is fixedly connected to the outer wall of the towing vehicle (101). A shock-absorbing spring (110) is sleeved on the outer surface of the hydraulic housing (112). A base (102) is fixedly connected to the end of the outer wall of the shock-absorbing spring (110) away from the towing vehicle (101). A hydraulic disc (113) is slidably connected to the inner wall of the hydraulic housing (112). A hydraulic hole (115) is opened inside the hydraulic disc (113). A hydraulic rod (114) is fixedly connected to the outer wall of the hydraulic disc (113). The outer wall of the hydraulic rod (114) is fixedly connected to the inner wall of the base (102). A fixing block (103) is fixedly connected to the top of the base (102). A worm gear (105) is rotatably connected inside the fixing block (103). A handle (104) is fixedly connected to the outer surface of the worm gear (105). A threaded rod (106) is fixedly connected to the top of the base (102). A worm wheel (107) is rotatably connected to the outer surface of the threaded rod (106). The worm wheel (107) meshes with the worm gear (105). A limit rod (108) is fixedly connected to the top of the base (102). A top plate (111) is rotatably connected to the top of the threaded rod (106). A caster wheel (109) is fixedly connected to the bottom of the base (102).

2. The rapid towing structure for aircraft landing gear according to claim 1, characterized in that, Two hydraulic housings (112) are provided, two shock-absorbing springs (110) are provided, two threaded rods (106) are provided, and the bottom of the top plate (111) is fixedly connected to the top of the limiting rod (108).

3. The rapid towing structure for aircraft landing gear according to claim 2, characterized in that, The clamping mechanism (2) includes an adjusting block (201), the inner wall of which is threadedly connected to the outer surface of the threaded rod (106).

4. A quick-transfer structure for aircraft landing gear according to claim 3, characterized in that, The inner wall of the adjusting block (201) is slidably connected to the outer surface of the limiting rod (108), and a motor (202) is fixedly connected to the outer wall of the adjusting block (201). The bottom output shaft of the motor (202) is fixedly connected to a rotating shaft (208) through a coupling.

5. A quick-transfer structure for aircraft landing gear according to claim 4, characterized in that, A gear (209) is fixedly connected to the outer surface of the rotating shaft (208), and a groove (203) is provided on the inner wall of the adjusting block (201), and a sliding groove (211) is provided inside the groove (203).

6. A quick-transfer structure for aircraft landing gear according to claim 5, characterized in that, The inner wall of the sliding groove (211) is slidably connected with a rack (210), and there are two racks (210). The racks (210) mesh with the gears (209), and the outer wall of the racks (210) is fixedly connected with a limit block (206).

7. A quick-detour structure for aircraft landing gear according to claim 6, characterized in that, Two limiting blocks (206) are provided. A clamping plate (207) is fixedly connected to the outer wall of the limiting block (206), and a limiting plate (204) is fixedly connected to the inner wall of the groove (203).

8. A quick-detach structure for aircraft landing gear according to claim 7, characterized in that, The inner wall of the limiting plate (204) is provided with a limiting groove (205), and the inner wall of the limiting groove (205) is slidably connected to a limiting block (206).

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