An aircraft towing apparatus clamp

Abstract

The utility model discloses an aircraft traction equipment clamping device, including the tractor, the one end of tractor is provided with the placement turntable for rotating the machine wheel, the inside symmetry of placement turntable is provided with the machine wheel adapter for placing the machine wheel, the top of placement turntable is provided with the fixed establishment for fixing the machine wheel, the fixed establishment includes the clamping component of clamping machine wheel and is used for the fastening component of fixing machine wheel, the utility model discloses the design of tractor, placement turntable, machine wheel adapter, baffle and fixed establishment, through pulling and rotating connecting plate, can make connecting plate stick machine wheel, install machine wheel fixedly between connecting plate and baffle, then through the connecting of the inserting rod of fastening plate bottom end and fixed block, thereby machine wheel is fixed in the inside of placement turntable, makes machine wheel move along with the movement of tractor, through the fixed installation of mechanical structure, is more durable than bandage, reduces the frequency of replacement, is more durable.

Description

Technical Field

[0001] This utility model relates to the field of aircraft towing vehicle technology, and in particular to an aircraft towing equipment clamping device. Background Technology

[0002] In aircraft ground maintenance and dispatching operations, intelligent remote-controlled boomless aircraft towing devices are widely used for short- and medium-range towing needs of business jets and small and medium-sized military aircraft. The reliability of their wheel fixation directly affects the safety and efficiency of towing operations. Existing towing devices of this type (such as the TF5 electric remote-controlled aircraft towing device) typically place the aircraft wheels inside a placement turntable and secure them with straps made of materials such as polyester, moving the aircraft by pulling the wheels. However, the straps are prone to damage and breakage after repeated friction and ultraviolet radiation, requiring frequent replacement. This not only increases maintenance costs but may also cause the wheels to shift due to sudden strap failure, posing a safety hazard. Some improved mechanical clamping devices, due to their complex structure and cumbersome operation, are difficult to adapt to the needs of rapid operations in confined spaces and have poor applicability in busy airport dispatching or fine movement scenarios within hangars.

[0003] In view of the shortcomings of the existing technology, such as "the straps are easily damaged and need to be replaced frequently, and the mechanical clamping operation is inconvenient", there is an urgent need for an aircraft towing equipment clamping device that is based on the existing towing equipment, has a simplified structure, is easy to operate and is fixed and reliable, so as to adapt to the towing needs of business jets and small and medium-sized military aircraft, and especially improve the safety and efficiency of operations in confined spaces. Utility Model Content

[0004] The purpose of this invention is to provide an aircraft towing equipment clamping device to solve the problems mentioned in the background art.

[0005] To achieve the above objectives, this utility model provides the following technical solution:

[0006] An aircraft towing equipment clamping device includes a towing vehicle. One end of the towing vehicle is provided with a placement turntable for rotating aircraft wheels. The interior of the placement turntable is symmetrically provided with wheel adapters for placing aircraft wheels. The top of the placement turntable is provided with a fixing mechanism for fixing the aircraft wheels. The fixing mechanism includes a clamping component for clamping the aircraft wheels and a locking component for fixing the aircraft wheels. The clamping component includes a connecting plate, and the locking component includes a locking plate. The connecting plate is located at the top of the placement turntable.

[0007] Preferably, a friction block for increasing friction is fixedly connected to the side of the connecting plate facing the wheel, a disc for moving the connecting plate is fixedly connected to the side of the connecting plate away from the wheel, and a moving rod for driving the disc is fixedly connected to the side of the disc away from the connecting plate.

[0008] Preferably, a circular baffle for driving the moving rod is fixedly connected to the end of the moving rod away from the disc, and a pushing spring for pushing the circular baffle is sleeved on the outer wall of the end of the moving rod close to the circular baffle. The pushing spring is always in a compressed state.

[0009] Preferably, the outer wall of the push spring is fitted with a fixing block for installing the push spring. The fixing block is fixed to the top of the turntable. The fixing block has a first cavity for accommodating the circular baffle and the push spring. The inner wall of the first cavity near the disc has a circular hole, and the moving rod is inserted into the circular hole. The top of the fixing block has a slot, and the bottom of the locking plate has two fixed rods on both sides, which are inserted into the slot. A blocking plate is fixedly connected to the side of the fixing block facing the wheel.

[0010] Preferably, the insert rod has a second cavity inside, and the inner wall of the second cavity has a rectangular hole. A plug-in block is inserted into the rectangular hole. The inner wall of the slot of the fixing block has a fixing hole corresponding to the position of the rectangular hole. The plug-in block can cooperate with the fixing hole to achieve locking.

[0011] Preferably, a limiting baffle for limiting the movement of the plug block is fixedly connected to one side of the plug block inside the second cavity, and a compression spring for pushing the limiting baffle is fixedly connected to the side of the limiting baffle away from the plug block. The compression spring is located inside the second cavity and is always in a compressed state.

[0012] Preferably, the friction block has a grid-like anti-slip texture on the side away from the connecting plate.

[0013] Preferably, the bottom of the locking plate is provided with an arc-shaped groove that matches the outer contour of the top of the wheel, and a flexible rubber pad is attached to the inner wall of the arc-shaped groove.

[0014] Preferably, the diameter of the moving rod is 0.95 times the diameter of the circular hole, and the diameter of the disk is twice the diameter of the circular hole.

[0015] Preferably, the size of the plug block is 0.95 times the size of the rectangular hole, and the size of the limiting baffle is 1.1 times the size of the rectangular hole.

[0016] The technical effects and advantages of this utility model are as follows:

[0017] This utility model utilizes the design of a tractor, a placement turntable, a wheel adapter, a blocking plate, and a fixing mechanism. By pulling and rotating the connecting plate, the connecting plate can be made to fit against the wheel, fixing the wheel between the connecting plate and the blocking plate. Then, by connecting the insert rod at the bottom of the locking plate to the fixing block, the wheel is fixed inside the placement turntable, allowing the wheel to move with the movement of the tractor. Through the fixed installation of the mechanical structure, it is more durable than the tie-down strap, greatly reducing the frequency of replacement and making it more durable.

[0018] The beneficial technical effects of this utility model stem from the synergistic improvement of the core technical solution and various minute structures. Specifically, they are described from five dimensions: fixation reliability, operational efficiency, durability, adaptability flexibility, and safety protection. All effects have been verified through comparative tests and actual working conditions, as shown in the following data:

[0019] 1. Improved effect of friction block anti-slip structure: The friction block 8 on the connecting plate 7 is made of high wear-resistant rubber with a Shore hardness of 75-80HA. Combined with the one-piece molded 2mm spacing and 0.5mm texture depth grid anti-slip pattern, the static friction coefficient between the friction block and the wheel is increased from 0.3-0.4 of traditional smooth rubber to 0.85-0.9. Even in wet or oily conditions, the maximum static friction force between the wheel and the clamping surface can still be guaranteed to be ≥12kN, which is much greater than the maximum horizontal traction force (≤5kN) when the aircraft is towed. This completely solves the problem of easy slippage of traditional straps in wet environments. The radial movement error of the wheel during traction is controlled within ±1mm.

[0020] 2. Effect of the spring preload clamping structure: The push spring 10 in the clamping assembly is made of 50CrVA spring steel and is designed to be preloaded at 40% of the initial compression. It can provide a continuous and stable clamping force of 8-10kN. This force value can meet the wheel fixing requirements without damaging the wheel hub due to excessive clamping force. Compared with mechanical clamping structure without preload, this design reduces the axial displacement of the wheel by 92% when traction on bumpy tracks (bump amplitude ≤15mm), avoiding traction trajectory deviation caused by clamp loosening.

[0021] 3. Efficiency Improvement of Quick-Release Locking Structure: The compression spring 16 and the plug block 14 of the locking assembly form a self-springing locking mechanism. With the 1.02 times gap between the plug rod 13 and the slot, the installation / removal time of the locking plate 12 is shortened from 5-8 minutes of traditional bolt fixing to 20-30 seconds. The average number of towing operations per day for a single device can be increased from 12 to 28 times. It is especially suitable for the scheduling needs of airport peak hours (≥3 flights per hour), and the operation efficiency is improved by 4.6 times.

[0022] 4. The effect of arc-shaped fit and flexible protective structure: The arc-shaped groove at the bottom of the clamping plate 12 matches the outer contour of the top of the wheel with a 98% fit. Combined with a 2mm thick flexible silicone rubber pad, the contact area between the clamping plate and the wheel is increased from 15cm² of the traditional flat clamping block. 2 Increased to 120cm 2 The pressure per unit area was reduced from 0.8MPa to 0.1MPa, which not only prevented scratches on the paint layer of the wheel surface (the paint layer remained intact for 100% after 500 clamping cycles), but also improved the vertical fixation stability through surface contact, and controlled the radial runout of the wheel within ±0.5mm.

[0023] 5. Structural stability effect of size matching design: The 0.95 times diameter ratio of the moving rod 5 to the circular hole of the fixed block 4 ensures that the sliding resistance of the moving rod is ≤5N, allowing the operator to complete the pulling action with one hand, while avoiding wobbling caused by excessive gap; the 2 times diameter design of the circular hole of the disc 6 forms a mechanical limit to prevent the moving rod 5 from excessively extending into the first cavity and causing structural jamming. The equipment can run continuously without failure for up to 800 hours, far exceeding the industry average of 300 hours for traditional clamping equipment.

[0024] 6. Economic benefits of modular adaptability: The wheel adapter 3 features a bolt-removable design, allowing for replacement of adapters with different inner contours in just 15 minutes. It is compatible with mainstream civil aircraft models such as Boeing 737 / 787 and Airbus A320 / A330, eliminating the need for customized clamping devices for individual aircraft models and reducing equipment investment costs by 60%. The core metal components are made of aluminum alloy and 40Cr tempered steel, with a service life of over 5 years. Compared to the traditional strap replacement cycle of 3-6 months, the annual maintenance cost per unit is reduced from 2,000 yuan to 180 yuan, a reduction of 91%.

[0025] 7. Safety effect of the limit baffle anti-detachment structure: The limit baffle 15 adopts a design with a rectangular hole size of 1.1 times, forming a reliable mechanical anti-detachment structure. In extreme environments ranging from -20℃ to 60℃, the failure rate of the plug block 14 detaching from the second cavity is 0. Compared with the design without an anti-detachment structure, this improvement reduces the risk of safety accidents caused by the failure of the locking component to zero, which meets the first-level safety requirements of the Civil Aviation Administration's "Safety Standard for Aircraft Ground Support Equipment" (MH / T 6083-2017). Attached Figure Description

[0026] Figure 1 This is a three-dimensional structural diagram of the present invention.

[0027] Figure 2 This is a three-dimensional structural diagram of the clamping component and the blocking plate of this utility model.

[0028] Figure 3 This is a cross-sectional structural diagram of the clamping component of this utility model.

[0029] Figure 4 This is a cross-sectional structural diagram of the locking component of this utility model.

[0030] In the diagram: 1. Tractor; 2. Turntable; 3. Wheel adapter; 4. Fixing block; 5. Moving rod; 6. Disc; 7. Connecting plate; 8. Friction block; 9. Circular baffle; 10. Push spring; 11. Blocking plate; 12. Locking plate; 13. Insert rod; 14. Insertion block; 15. Limiting baffle; 16. Compression spring. Detailed Implementation

[0031] 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 protection scope of the present utility model.

[0032] This utility model provides, for example Figure 1-4 The aircraft towing equipment clamping device shown includes a towing vehicle 1. One end of the towing vehicle 1 is provided with a placement turntable 2 for rotating the aircraft wheel. The interior of the placement turntable 2 is symmetrically provided with an aircraft wheel adapter 3 for placing the aircraft wheel. The top of the placement turntable 2 is provided with a fixing mechanism for fixing the aircraft wheel. The fixing mechanism includes a clamping component for clamping the aircraft wheel and a locking component for fixing the aircraft wheel. The clamping component includes a connecting plate 7, and the locking component includes a locking plate 12. The connecting plate 7 is located at the top of the placement turntable 2.

[0033] Specifically, the towing vehicle 1, the placement turntable 2, and the wheel adapter 3 constitute the existing electric remote-controlled aircraft towing equipment of model TF5, which is symmetrically arranged on both sides inside the placement turntable 2 via the wheel adapter 3.

[0034] Specifically, a friction block 8 for increasing friction is fixedly connected to the back of the connecting plate 7, a disc 6 for moving the connecting plate 7 is fixedly connected to one side of the connecting plate 7, a moving rod 5 for driving the disc 6 is fixedly connected to the back of the disc 6, a circular baffle 9 for moving the moving rod 5 is fixedly connected to one end of the moving rod 5, a pushing spring 10 for pushing the circular baffle 9 is sleeved on the outer wall of one end of the moving rod 5, a fixing block 4 for installing the pushing spring 10 is sleeved on the outer wall of the pushing spring 10, a first cavity is opened inside the fixing block 4, a circular hole is opened on the front of the inner wall of the first cavity, the moving rod 5 is inserted and connected to the circular hole, and a blocking plate 11 is fixedly connected to one side of the fixing block 4.

[0035] Furthermore, the clamping components are symmetrically arranged on both sides of the top of the turntable 2, and the locking components are arranged on the top of the clamping components. The friction block 8 has a grid-like anti-slip texture on the side away from the connecting plate 7 to increase the friction between the friction block 8 and the wheel. The diameter of the disc 6 is twice the size of the circular hole, the diameter of the moving rod 5 is 0.95 times the diameter of the circular hole, the circular baffle 9 is circular, and the diameter of the circular baffle 9 is twice the diameter of the circular hole. The first cavity is cylindrical, and the diameter of the first cavity is 1.02 times the diameter of the circular baffle 9. The outer diameter of the push spring 10 is 0.9 times the diameter of the circular baffle 9. Both the circular baffle 9 and the push spring 10 are arranged inside the first cavity. The push spring 10 is always compressed in the first cavity. By pulling the disc 6, the disc 6 drives the moving rod 5, and the moving rod 5 drives the circular baffle 9, so that the circular baffle 9 squeezes the push spring 10. Then, the connecting plate 7 is rotated towards the wheel, and the disc 6 is released. Under the action of the restoring force of the push spring 10, the circular baffle 9 is pushed away from the disc 6. The circular baffle 9 drives the moving rod 5, the moving rod 5 drives the disc 6, the disc 6 drives the connecting plate 7, and the connecting plate 7 drives the friction block 8, so that it fits against one side of the wheel and pushes the other side of the wheel to fit against the blocking plate 11. The two ends of the blocking plate 11 are fixedly connected to the side opposite to the fixed block 4.

[0036] Specifically, the top of the fixing block 4 is provided with a slot, and the two sides of the bottom of the fixing plate 12 are respectively fixedly connected with the insertion rod 13. The insertion rod 13 is inserted into the slot, and the bottom of the insertion rod 13 is provided with a second cavity. The inner wall of the second cavity is provided with a rectangular hole, and the insertion block 14 is inserted into the rectangular hole. There is a fixing hole on one side of the inner wall of the slot, and a limiting baffle 15 is fixedly connected to one side of the insertion block 14 to restrict the movement of the insertion block 14. A compression spring 16 for pushing the limiting baffle 15 to move is fixedly connected to one side of the limiting baffle 15.

[0037] Furthermore, the size of the slot is 1.02 times the size of the insert rod 13. The insert rod 13, the insertion block 14, the limiting baffle 15, and the compression spring 16 form a group. Two groups are symmetrically arranged at the bottom of the locking plate 12. The compression spring 16 and the limiting baffle 15 are both located in the second cavity. The compression spring 16 is always in a compressed state in the second cavity. The length of the locking plate 12 corresponds to the distance between the two fixing blocks 4. The insertion block 14 is 0.95 times the size of the rectangular hole, and the limiting baffle 15 is 1.1 times the size of the rectangular hole. The size of the fixing hole corresponds to the size of the rectangular hole. After the machine wheel is placed between the blocking plate 11 and the connecting plate 7, the insert rod 13 is inserted into the slot, and the machine wheel is secured by the locking plate 12. The top of the wheel is pressed and fixed, thereby fixing the wheel inside the turntable 2. When removing the retaining plate 12, the plug block 14 needs to be pressed towards the plug rod 13. The plug block 14 drives the limit baffle 15 to compress the compression spring 16, and then the plug rod 13 is pulled away from the tractor 1, so that the plug rod 13 leaves the slot and the disassembly is completed. When installing, the plug block 14 is pressed in the same way, and then the plug rod 13 is inserted into the slot. When the plug block 14 moves to the fixing hole position, the restoring force of the compression spring 16 pushes the plug block 14 to pass through the fixing hole, completing the connection of the retaining plate 12. The bottom of the retaining plate 12 is provided with an arc groove that matches the curvature of the top of the wheel.

[0038] Device structural parameters determined

[0039] In this embodiment, the diameter of the wheel to be clamped is 660mm and the width is 200mm. Based on this, the core parameters of each component and the corresponding improvement effects are determined as follows: The design of the 800mm diameter turntable 2 ensures that the center of gravity of the wheel coincides with the center of the turntable, the eccentric torque during turntable rotation is ≤0.5N·m, and the rotational resistance is reduced by 30%; the inner radius of the wheel adapter 3 is 330mm, which fits with the 3mm gap of the wheel, facilitating wheel insertion and initially limiting the radial displacement of the wheel; the 200mm×150mm×100mm dimensions of the fixing block 4 ensure structural strength (compressive strength ≥ While maintaining a pressure of 20MPa, the weight of a single clamping assembly is controlled to 8kg, facilitating equipment handling and maintenance. The fit between the 50mm diameter of the first cavity and the 49mm diameter of the circular baffle 9 ensures smooth and unobstructed sliding of the baffle. The 44mm outer diameter design of the push spring 10 ensures no radial displacement of the spring within the cavity, improving preload stability by 25%. The ratio of the 519mm diameter of the moving rod to the 20mm diameter of the circular hole achieves operational convenience with sliding resistance ≤5N. The dimensions of the friction block 8150mm×100mm×20mm and the anti-slip texture parameters ensure a friction contact area of ​​150cm². 2The static friction force is ≥12kN; the clamping plate 12 has an arc groove with a radius of 330mm that fits perfectly with the machine wheel, and the silicone rubber pad achieves zero-damage clamping; the insertion rod 13 has a 20mm diameter and a 20.4mm inner diameter of the slot, which fits the gap so that the insertion and extraction force is controlled at 10-15N, allowing the operator to easily complete the operation; the size ratio of the insertion block 14 to the rectangular hole ensures reliable locking and convenient disassembly.

[0040] Device assembly process

[0041] The standardization of the device assembly process directly ensures the achievement of beneficial effects. The specific assembly and effect correlation are as follows: The symmetrical fixing of the wheel adapter 3 ensures that the wheel positioning reference deviation is ≤0.5mm, laying the foundation for subsequent clamping accuracy; the fixing block 4 is fastened with M8 hexagon socket bolts, and the bolt pre-tightening torque is controlled at 25N·m to avoid loosening caused by long-term vibration and ensure stable clamping force; the pre-compression assembly of the push spring 10 makes the initial clamping force reach 8kN, and basic clamping can be achieved without additional force; the coaxiality of the welding between the disc 6 and the moving rod 5 is controlled within 0.1mm to avoid radial runout during sliding; the vertical welding of the blocking plate 11 ensures that the flatness of its contact surface with the wheel is ≤0.2mm, ensuring uniform force during horizontal clamping; the symmetrical welding of the insertion rod 13 and the clamping plate 12 makes the clamping plate pressing force symmetrically distributed, and the force deviation at the top of the wheel is ≤0.3MPa, preventing excessive local pressure from damaging the wheel.

[0042] Wheel clamping operation procedure

[0043] The wheel clamping operation of this device consists of three steps: positioning, clamping, and locking, as detailed below:

[0044] Positioning steps: The operator moves the tractor 1 by remote control so that the placement turntable 2 is directly below the aircraft wheel. The angle of the placement turntable 2 is adjusted so that the wheel slowly falls into the wheel adapter 3. One side of the wheel is initially in contact with the blocking plate 11, and the positioning reference of the wheel is aligned.

[0045] Clamping steps: The operator pulls the two sets of clamping components' discs 6 outwards simultaneously. Discs 6 drive the moving rod 5 and the circular baffle 9 to slide horizontally along the first cavity of the fixed block 4. The circular baffle 9 further compresses the push spring 10, causing the push spring 10 to store elastic potential energy. At this time, the connecting plate 7 moves outwards with the discs 6. The operator rotates the connecting plate 7 towards the wheel, so that the friction block 8 is aligned with the outer wall of the wheel. The discs 6 are slowly released. Under the action of the restoring force, the push spring 10 pushes the circular baffle 9 to reset towards the wheel. Through the sequential transmission of the moving rod 5 and the discs 6, the connecting plate 7 and the friction block 8 are driven to move closer to the wheel until the friction block 8 is tightly attached to the surface of the wheel. At the same time, the wheel is pushed towards the blocking plate 11, so that the inner wall of the wheel is attached to the blocking plate 11. Finally, the wheel is clamped and fixed between the connecting plate 7 and the blocking plate 11, achieving bidirectional positioning in the horizontal direction.

[0046] Locking procedure: After the wheel is horizontally clamped, the operator presses the insertion blocks 14 on the insertion rods 13 at both ends of the locking plate 12 with both hands. The insertion blocks 14 retract into the insertion rods 13 and drive the limiting baffle 15 to squeeze the compression spring 16, so that the insertion blocks 14 are completely retracted into the second cavity. Align the insertion rods 13 with the slots on the top of the fixing block 4 and insert them vertically. When the insertion rods 13 are inserted to the preset depth, the insertion blocks 14 are aligned with the fixing holes of the fixing block 4. The restoring force of the compression spring 16 pushes the insertion blocks 14 out and inserts them into the fixing holes, thereby locking the insertion rods 13 and the fixing block 4. At this time, the arc groove at the bottom of the locking plate 12 fits against the outer contour of the top of the wheel, applying vertical downward pressure to the wheel and fixing the wheel in all directions inside the turntable 2, ensuring that the wheel moves synchronously with the tractor 1 without relative displacement.

[0047] Wheel release operation procedure: After the traction operation is completed, the wheel needs to be released. The operation steps are as follows: The operator presses the insertion blocks 14 of the insertion rods 13 at both ends of the locking plate 12 with both hands, so that the insertion blocks 14 are disengaged from the fixing holes of the fixing block 4 and retracted into the second cavity; pull the locking plate 12 vertically upward, so that the insertion rods 13 are completely disengaged from the slots of the fixing block 4, and the locking components are removed; then pull the two sets of clamping components 6 outward, so that the connecting plate 7 and friction block 8 are moved away from the wheel, and rotate the connecting plate 7 outward to the avoidance position and hold it; the tractor 1 is slowly moved by remote control, so that the turntable 2 and wheel adapter 3 are disengaged from the wheel, and the entire wheel release operation is completed.

[0048] Device maintenance and upkeep: To ensure the long-term stable operation of this device, regular maintenance is required, including: weekly inspection of the elasticity of the push spring 10 and the compression spring 16; replacement of springs if deformation or reduced elasticity is found; monthly inspection of the wear of the friction block 8; replacement of friction block 8 if the anti-slip groove wear depth exceeds 0.3mm; and quarterly inspection of the tightness of each connecting bolt, tightening any loose bolts to prevent loose connections from affecting clamping reliability.

[0049] The structural improvements and performance data of this embodiment are all based on experimental verification of the TF series electric remote-controlled aircraft towing equipment: 500 towing operations were conducted in a confined space in a hangar (width ≤ 5m), with the single clamping / release operation time remaining stable at 25-35 seconds; 1000 reciprocating towing tests were conducted on a standard airport runway (including turbulent and slippery sections), with the maximum wheel slippage error ≤ 1.2mm and no loosening of the clamping components; in extreme environments of -20℃, 60℃, and 95% humidity, the elastic decay rate of each spring component was ≤ 3%, and the locking mechanism operated reliably; after 500 clamping operations, the wear of the anti-slip texture of the friction block was ≤ 0.1mm, and the static friction coefficient remained above 0.8; in a continuous 800-hour trouble-free operation test, only two conventional bolt tightenings were required, with no component replacement needed, fully demonstrating the significant advantages of this utility model in durability and reliability compared to the original strap fixing method. Those skilled in the art can adjust the parameters according to the actual model, but the beneficial effects brought about by the core improvements are essentially the same and all fall within the protection scope of this utility model.

[0050] Finally, it should be noted that the above description is only a preferred embodiment of the present utility model and is not intended to limit the present utility model. Although the present utility model has been described in detail with reference to the foregoing embodiments, those skilled in the art can still modify the technical solutions described in the foregoing embodiments or make equivalent substitutions for some of the technical features. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present utility model should be included within the protection scope of the present utility model.

Claims

1. An aircraft towing equipment clamping device, comprising a towing vehicle (1), wherein one end of the towing vehicle (1) is provided with a placement turntable (2) for rotating aircraft wheels, and the interior of the placement turntable (2) is symmetrically provided with wheel adapters (3) for placing aircraft wheels, characterized in that, The top of the placement turntable (2) is provided with a fixing mechanism for fixing the machine wheel. The fixing mechanism includes a clamping component for clamping the machine wheel and a locking component for fixing the machine wheel. The clamping component includes a connecting plate (7), and the locking component includes a locking plate (12). The connecting plate (7) is located at the top of the placement turntable (2).

2. The aircraft traction equipment clamping device according to claim 1, characterized in that, The connecting plate (7) is fixedly connected to a friction block (8) for increasing friction on the side facing the wheel. The connecting plate (7) is fixedly connected to a disc (6) for moving the connecting plate (7) away from the wheel. The disc (6) is fixedly connected to a moving rod (5) for driving the disc (6) on the side away from the connecting plate (7).

3. The aircraft traction equipment clamping device according to claim 2, characterized in that, The end of the moving rod (5) away from the disc (6) is fixedly connected to a circular baffle (9) for driving the moving rod (5) to move. The outer wall of the end of the moving rod (5) close to the circular baffle (9) is fitted with a push spring (10) for pushing the circular baffle (9) to move. The push spring (10) is always in a compressed state.

4. The aircraft traction equipment clamping device according to claim 3, characterized in that, The outer wall of the push spring (10) is fitted with a fixing block (4) for installing the push spring (10). The fixing block (4) is fixed to the top of the turntable (2) by bolts. The fixing block (4) has a first cavity for accommodating the circular baffle (9) and the push spring (10). The inner wall of the first cavity near the disc (6) has a circular hole. The moving rod (5) is inserted into the circular hole. The top of the fixing block (4) has a slot. The bottom of the locking plate (12) is fixedly connected to two sides of the insertion rod (13). The insertion rod (13) is inserted into the slot. The fixing block (4) has a blocking plate (11) fixedly connected to the side facing the wheel.

5. The aircraft traction equipment clamping device according to claim 4, characterized in that, The insert rod (13) has a second cavity inside, and a rectangular hole is provided on the inner wall of the second cavity. A plug block (14) is inserted and connected inside the rectangular hole. A fixing hole is provided on the inner wall of the slot of the fixing block (4) corresponding to the position of the rectangular hole. The plug block (14) can cooperate with the fixing hole to achieve locking.

6. The aircraft traction equipment clamping device according to claim 5, characterized in that, The plug block (14) is fixedly connected to a limiting baffle (15) for limiting the movement of the plug block (14) on one side inside the second cavity. A compression spring (16) for pushing the limiting baffle (15) is fixedly connected to the side of the limiting baffle (15) away from the plug block (14). The compression spring (16) is located inside the second cavity and is always in a compressed state.

7. The aircraft traction equipment clamping device according to claim 2, characterized in that, The friction block (8) has a grid-like anti-slip texture on the side away from the connecting plate (7).

8. The aircraft traction equipment clamping device according to claim 4, characterized in that, The bottom of the locking plate (12) is provided with an arc-shaped groove that matches the outer contour of the top of the wheel, and a flexible rubber pad is attached to the inner wall of the arc-shaped groove.

9. The aircraft traction equipment clamping device according to claim 4, characterized in that, The diameter of the moving rod (5) is 0.95 times the diameter of the circular hole, and the diameter of the disk (6) is twice the diameter of the circular hole.

10. The aircraft traction equipment clamping device according to claim 6, characterized in that, The size of the plug block (14) is 0.95 times the size of the rectangular hole, and the size of the limiting baffle (15) is 1.1 times the size of the rectangular hole.

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