Aircraft draw bar

Abstract

The utility model discloses an airplane draw bar which comprises a handheld terminal, a control box, a lock catch head mechanism, a wheel type supporting mechanism, a swing adjusting mechanism, a folding driving mechanism, a length adjusting mechanism, a buffer connecting mechanism and a trailer connector. A slave controller of the handheld terminal of the airplane traction rod is in wireless communication with a master controller through a slave wireless communication module and a master communication module and sends a signal to the master controller, the master controller controls a swing adjusting mechanism, a folding driving mechanism, a length adjusting mechanism and a lock catch head mechanism to operate, and therefore remote electric control operation butt joint can be achieved; the swing adjusting mechanism is used for driving the length adjusting mechanism, the folding driving mechanism and the length adjusting mechanism to be matched, the lock catch head mechanism can be accurately locked to an aircraft landing gear, a trailer pulls a trailer connector, and the aircraft traction requirement is met; the trailer connector and the length adjusting mechanism are connected through the buffering connecting mechanism, the buffering effect is achieved, and therefore rigid impact is reduced.

Description

Technical Field

[0001] The utility model relates to a traction rod, in particular to an aircraft traction rod. Background Art

[0002] At present, the towing rod in the prior art has a simple structure. When docking with the aircraft, it needs to be moved and adjusted manually, which is not only inefficient but also requires a lot of manpower. In addition, during the towing process, since the existing towing rod structure is fixed, there will be a certain rigid impact due to the sudden change in speed at the beginning and end of the towing, which will pose a potential safety risk to both ends of the towing.

[0003] Therefore, it is necessary to design an aircraft towing rod that can be remotely electrically controlled to achieve rapid docking and has a certain buffering effect during the towing process, thereby reducing rigid impact. Utility Model Content

[0004] The utility model aims to provide an aircraft towing rod which can be electrically controlled and docked at a long distance and can reduce rigid impact.

[0005] Technical solution: The aircraft towing rod provided by the utility model includes a handheld terminal, a control box, a locking head mechanism, a wheeled support mechanism, a swing adjustment mechanism, a folding drive mechanism, a length adjustment mechanism, a buffer connection mechanism and a trailer connector;

[0006] The locking head mechanism is installed on one end of the length adjustment mechanism and is used to lock on the aircraft landing gear; the buffer connection mechanism is connected and installed between the other end of the length adjustment mechanism and the trailer connection head and is used for buffering, and the trailer connection head is used to be towed by the trailer; the middle part of the length adjustment mechanism is swing-mounted on the swing adjustment mechanism, and the swing adjustment mechanism drives the length adjustment mechanism to swing horizontally, and the length of the length adjustment mechanism is adjustable; the wheel support mechanism is installed on the swing adjustment mechanism and is used to provide mobile support for the swing adjustment mechanism; the two ends of the folding drive mechanism are respectively hinged on the wheel support mechanism and the length adjustment mechanism, and are used to adjust the angle between the length adjustment mechanism and the wheel support mechanism;

[0007] A main controller and a main wireless communication module electrically connected to the main controller are installed in the control box; the swing adjustment mechanism, the folding drive mechanism, the length adjustment mechanism and the locking head mechanism are all driven and controlled by the main controller; a slave controller and a slave wireless communication module electrically connected to the slave controller are arranged in the handheld terminal, and the slave wireless communication module communicates wirelessly with the main wireless communication module.

[0008] Furthermore, the handheld terminal includes a terminal housing, a key panel and a display screen; the slave controller and the slave wireless communication module are both located in the terminal housing; the key panel and the display screen are both mounted on the terminal housing and are electrically connected to the slave controller.

[0009] Furthermore, the length adjustment mechanism includes a supporting main tube, a length telescopic rod, a telescopic driving screw and a telescopic driving motor; one end of the length telescopic rod is inserted into the supporting main tube; a locking head mechanism is installed on the other end of the length telescopic rod; the telescopic driving screw is rotatably installed on the supporting main tube, and is used to drive the length telescopic rod to move telescopically along the supporting main tube; the telescopic driving motor is used to drive the telescopic driving screw to rotate, and is electrically connected to the main controller through the telescopic driving circuit.

[0010] Furthermore, the locking head mechanism includes a locking seat and a locking unit; the locking unit includes a locking drive motor, a locking drive screw and a locking pressure plate;

[0011] The lock seat is fixed on the length adjustment mechanism through a positioning plate; a lock slot is provided on the lock seat; a guide seat is provided on the lock seat; a locking pressure plate slides through the guide seat and is used to cooperate with the lock slot to lock the landing gear; the locking drive screw is rotatably installed on the positioning plate through a rotating seat and is used to drive the locking pressure plate to slide along the guide seat; the locking drive motor is used to drive the locking drive screw to rotate and is electrically connected to the main controller through the locking drive circuit; a camera electrically connected to the main controller is installed on the rotating seat through a vertical pole and is used to capture images at the lock slot.

[0012] Furthermore, the swing adjustment mechanism includes a bar seat, a swing drive screw, a swing sliding seat and a swing drive motor; the middle part of the length adjustment mechanism is hingedly mounted on the bar seat; the swing sliding seat is longitudinally slidably mounted on the bar seat; the swing drive screw is rotationally mounted on the bar seat, and is used to drive the swing sliding seat to move longitudinally; the swing drive motor is used to drive the swing drive screw to rotate, and is electrically connected to the main controller through the swing drive circuit; the wheel support mechanism is mounted on the swing sliding seat.

[0013] Furthermore, the wheeled support mechanism includes a main shaft, a support column and two support rollers; the main shaft is longitudinally fixed on the swing adjustment mechanism through the support column; and the two support rollers are rotatably installed on both ends of the main shaft.

[0014] Furthermore, the folding drive mechanism includes an electric telescopic rod; both ends of the electric telescopic rod are respectively hinged on the length adjustment mechanism and the wheel support mechanism, and are electrically connected to the main controller through the folding drive circuit.

[0015] Furthermore, the buffer connection mechanism includes a buffer connection tube, a buffer connection rod and a friction damper; one end of the buffer connection tube is fixed on the length adjustment mechanism; a guide hole is provided on the buffer connection tube; one end of the buffer connection rod is inserted into the guide hole; a friction hole with a diameter larger than the guide hole is coaxially provided in the middle of the guide hole; the friction damper is installed on the buffer connection rod, and is used to cooperate with the friction hole to provide friction damping for the buffer connection rod; the trailer connector is installed on the buffer connection rod.

[0016] Furthermore, the trailer connector includes a ball joint and a pin; a ball joint mounting seat is provided on the buffer connection mechanism; and the pin is mounted on the ball joint mounting seat through the ball joint.

[0017] Compared with the prior art, the utility model has the following beneficial effects: the slave controller of the handheld terminal communicates wirelessly with the main controller through the slave wireless communication module and the main communication module, sends a signal to the main controller, and the main controller controls the operation of the swing adjustment mechanism, the folding drive mechanism, the length adjustment mechanism and the locking head mechanism, so that the docking can be performed by remote electric control; the swing adjustment mechanism drives the length adjustment mechanism to swing horizontally, and the folding drive mechanism drives the length adjustment mechanism to swing up and down, and the length of the length adjustment mechanism is adjustable, so that the locking head mechanism can be accurately locked on the aircraft landing gear, and the trailer tows the trailer connector to meet the aircraft towing requirements; the buffer connection mechanism connects the trailer connector and the length adjustment mechanism to play a buffering role, thereby reducing rigid impact. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] Figure 1 It is a top view of the utility model;

[0019] Figure 2 It is the front view of the utility model;

[0020] Figure 3 It is a cross-sectional view of the buffer connecting pipe of the utility model;

[0021] Figure 4 It is a schematic diagram of the circuit structure of the utility model;

[0022] In the figure: 1. Support main pipe; 2. Buffer connecting pipe; 3. Length telescopic rod; 4. Positioning plate; 5. Lock seat; 6. Guide seat; 7. Locking pressure plate; 8. Locking notch; 9. Camera; 10. Locking drive motor; 11. Long strip hole; 12. Telescopic adjustment block; 13. Telescopic drive screw; 14. Telescopic drive motor; 15. Articulated seat; 16. Strip seat; 17. Main shaft; 18. Support roller; 19. Control box; 20. Buffer connecting rod; 21. Ball joint mounting seat; 22. Pin shaft; 23. Terminal housing; 24. Swing drive motor; 25. Swing sliding seat; 26. Swing drive screw; 27. Support column; 28. Electric telescopic rod; 29. ​​Vertical pole; 30. Guide limit groove; 31. Locking drive screw; 32. Guide hole; 33. Friction hole; 34. Annular baffle; 35. Friction ring; 36. Support compression spring. DETAILED DESCRIPTION

[0023] The technical solution of the utility model is described in detail below in conjunction with the accompanying drawings, but the protection scope of the utility model is not limited to the embodiments.

[0024] In the present invention, unless otherwise clearly specified and limited, the terms "installed", "connected", "connected", "fixed" and the like should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be directly connected or indirectly connected through an intermediate medium, it can be the internal connection of two elements or the interaction relationship between two elements. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0025] In the description of the present invention, it should be understood that the terms "left", "right", "front", "back", "up", "down", "top", "bottom", etc. indicating directions or positional relationships are based on the directions or positional relationships shown in the accompanying drawings, and are only simplified descriptions for the convenience of describing the present invention, and do not indicate or imply that the device or element referred to must have a specific direction, be constructed and operated in a specific direction, and therefore should not be understood as a limitation on the present invention.

[0026] Embodiment 1:

[0027] like Figure 1-4 As shown, the utility model provides an aircraft towing rod comprising: a handheld terminal, a control box 19, a locking head mechanism, a wheel support mechanism, a swing adjustment mechanism, a folding drive mechanism, a length adjustment mechanism, a buffer connection mechanism and a trailer connector;

[0028] The locking head mechanism is installed on the left end of the length adjustment mechanism and is used to lock on the aircraft landing gear; the buffer connection mechanism is connected and installed between the right end of the length adjustment mechanism and the trailer connection head for buffering, and the trailer connection head is used to be towed and pulled by the trailer; the middle part of the length adjustment mechanism is swing-mounted on the swing adjustment mechanism, and the swing adjustment mechanism drives the length adjustment mechanism to swing horizontally, and the length of the length adjustment mechanism is adjustable; the wheel support mechanism is installed on the swing adjustment mechanism and is used to provide mobile support for the swing adjustment mechanism and the length adjustment mechanism; the two ends of the folding drive mechanism are respectively hinged on the wheel support mechanism and the length adjustment mechanism, and are used to adjust the angle between the length adjustment mechanism and the wheel support mechanism, and can fold the wheel support mechanism when towing;

[0029] The control box 19 is installed on the length adjustment mechanism; a main controller and a main wireless communication module electrically connected to the main controller are installed in the control box 19; the swing adjustment mechanism, the folding drive mechanism, the length adjustment mechanism and the locking head mechanism are all driven and controlled by the main controller; a slave controller and a slave wireless communication module electrically connected to the slave controller are provided in the handheld terminal, and the slave wireless communication module communicates wirelessly with the main wireless communication module.

[0030] The slave controller of the handheld terminal communicates wirelessly with the main controller through the slave wireless communication module and the main communication module, and sends a signal to the main controller, which controls the operation of the swing adjustment mechanism, the folding drive mechanism, the length adjustment mechanism and the locking head mechanism, so that the docking can be operated electronically from a distance; the swing adjustment mechanism drives the length adjustment mechanism to swing horizontally, and the folding drive mechanism drives the length adjustment mechanism to swing up and down. The length of the length adjustment mechanism is adjustable, so that the locking head mechanism can be accurately locked on the aircraft landing gear, and the trailer tows the trailer connector to meet the aircraft towing requirements; the buffer connection mechanism connects the trailer connector and the length adjustment mechanism to play a buffering role, thereby reducing rigid impact.

[0031] Furthermore, the handheld terminal includes a terminal housing 23, a key panel and a display screen; the slave controller and the slave wireless communication module are both located in the terminal housing 23; the key panel and the display screen are both mounted on the terminal housing 23 and are both electrically connected to the slave controller. The key panel sends a signal to the main controller through the slave controller, thereby controlling the swing adjustment mechanism, the folding drive mechanism, the length adjustment mechanism and the buckle head mechanism.

[0032] Furthermore, the length adjustment mechanism includes a supporting main pipe 1, a telescopic length rod 3, a telescopic driving screw 13 and a telescopic driving motor 14; the right end of the telescopic length rod 3 is inserted into the left end of the supporting main pipe 1; the locking head mechanism is installed on the left end of the telescopic length rod 3; a long hole 11 is horizontally arranged on the supporting main pipe 1; a telescopic adjustment block 12 extending through the long hole 11 is arranged on the telescopic length rod 3; the telescopic driving screw 13 is rotatably installed on the supporting main pipe 1, and the thread is screwed through the telescopic adjustment block 12, which is used to drive the telescopic adjustment block 12 to move horizontally along the long hole 11; the telescopic driving motor 14 is used to drive the telescopic driving screw 13 to rotate, and is electrically connected to the main controller through the telescopic driving circuit.

[0033] The telescopic drive motor 14 drives the telescopic drive screw 13 to rotate under the control of the main controller, and the telescopic adjustment block 12 moves along the long hole 11, driving the length telescopic rod 3 to extend and retract along the supporting main pipe 1, thereby realizing the length adjustment of the length adjustment mechanism.

[0034] Furthermore, the locking head mechanism includes a locking seat 5 and a locking unit; the locking unit includes a locking drive motor 10, a locking drive screw 31 and a locking pressure plate 7;

[0035] The lock seat 5 is fixed to the left end of the length telescopic rod 3 through the positioning plate 4; a lock slot 8 is longitudinally arranged on the upper side of the lock seat 5; a guide seat 6 is arranged on the lock seat 5; a locking pressure plate 7 slides and laterally penetrates the guide seat 6, and is used to cooperate with the lock slot 8 to lock the landing gear; a locking drive threaded hole is arranged on the right side of the locking pressure plate 7; the locking drive motor 10 is installed on the positioning plate and is electrically connected to the main controller through the locking drive circuit; the locking drive screw 31 is rotatably installed on the positioning plate 4 through the rotating seat, and the right end is docked on the output shaft of the locking drive motor 10, and the left end is screwed on the locking drive threaded hole; guide limit grooves 30 are horizontally arranged on the front and rear side surfaces of the locking pressure plate 7, and a guide limit block that slides with the guide limit groove 30 is arranged on the guide seat 6; a vertical rod 29 is arranged on the rotating seat, and a camera 9 electrically connected to the main controller is installed on the upper end of the vertical rod 29, and the camera 9 is used to collect the image picture at the lock slot 8.

[0036] The locking drive motor 10 is used to drive the locking drive screw 31 to rotate under the control of the main controller, so that the locking pressure plate 7 slides along the guide seat 6. After the landing gear is buckled on the locking groove 8, the locking pressure plate 7 cooperates with the locking groove 8 to lock and buckle the landing gear, thereby realizing the buckling of the traction rod to the landing gear; the cooperation between the guide limit groove 30 and the guide limit block is used to realize the limiting guidance of the locking pressure plate 7 to prevent the locking pressure plate 7 from separating from the guide seat 6; the main controller transmits the image of the locking groove 8 captured by the camera 9 to the slave controller in real time through the main wireless communication module and the slave wireless communication module, and the display screen displays the image of the locking groove 8 under the control of the slave controller, thereby facilitating remote observation of whether the locking head mechanism is stably buckled on the aircraft landing gear.

[0037] Furthermore, the swing adjustment mechanism includes a bar seat 16, a swing drive screw 26, a swing sliding seat 25 and a swing drive motor 24; two articulated seats 15 are arranged on the upper side of the bar seat 16; the middle part of the supporting main pipe 1 is rotatably mounted on the two articulated seats 15; the swing sliding seat 25 is longitudinally slidably mounted on the bar seat 16; the swing drive screw 26 is rotatably mounted longitudinally on the bar seat 16, and is threadedly screwed through the swing sliding seat 25; the swing drive motor 24 is used to drive the swing drive screw 26 to rotate, and is electrically connected to the main controller through the swing drive circuit; the wheel support mechanism is mounted on the swing sliding seat 25.

[0038] The swing drive motor 24 drives the swing drive screw 26 to rotate under the control of the main controller, so that the swing sliding seat 25 slides along the strip seat 16, thereby causing an angular offset between the supporting main pipe 1 and the wheeled supporting mechanism to achieve horizontal swing adjustment of the length adjustment mechanism.

[0039] Furthermore, the wheeled support mechanism includes a main shaft 17, a support column 27 and two support rollers 18; the upper end of the support column 27 is fixed on the swing sliding seat 25; the main shaft 17 is longitudinally fixed on the lower end of the support column 27; and the two support rollers 18 are rotatably mounted on both ends of the main shaft 17. The support rollers 18 are supported on the ground to support the swing adjustment mechanism and the length adjustment mechanism during the movement.

[0040] Furthermore, the folding drive mechanism includes an electric telescopic rod 28; the upper end of the electric telescopic rod 28 is hinged on the right side of the supporting main pipe 1, and the lower end is hinged on the supporting column 27; the electric telescopic rod 28 is electrically connected to the main controller through the folding drive circuit. The electric telescopic rod 28 is extended and retracted under the control of the main controller to adjust the angle between the supporting column 27 and the supporting main pipe 1, so that the length adjustment mechanism can be adjusted up and down during the movement, and the wheeled support mechanism can be retracted during traction, so that the two supporting rollers 18 are off the ground to prevent the wheeled support mechanism from interfering with the traction process.

[0041] Furthermore, the buffer connection mechanism includes a buffer connection pipe 2, a buffer connection rod 20 and a friction damper; the friction damper includes a friction ring 35, two annular baffles 34 and two supporting compression springs 36;

[0042] The left end of the buffer connecting pipe 2 is coaxially fixed to the right end of the supporting main pipe 1; a guide hole 32 is coaxially arranged on the buffer connecting pipe 2; the left side of the buffer connecting rod 20 is inserted into the guide hole 32; a friction hole 33 with a diameter larger than the guide hole 32 is coaxially arranged in the middle of the guide hole 32; the friction ring 35 is sleeved on the buffer connecting rod 20, and the circumferential side surface is tightly pressed against the circumferential inner wall of the friction hole 33; two annular baffles 34 are coaxially fixed on the buffer connecting rod 20, and the two annular baffles 34 clamp the friction ring 35; two supporting compression springs 36 are both sleeved on the buffer connecting rod 20, and are elastically supported between the two annular baffles 34 and the end faces of the friction holes 33 on the corresponding sides; the trailer connector is installed on the right end of the buffer connecting rod 20.

[0043] The buffer connecting rod 20 moves along the guide hole 32 during the traction process, and the friction ring 35 moves under the clamping of the annular baffle 34 and generates friction with the hole wall of the friction hole 33, providing friction damping for the buffer connecting rod 20. The two supporting compression springs 36 can absorb the impact caused by the speed change during the traction process, and make the friction ring 35 slide repeatedly to accelerate the attenuation of the impact, thereby playing a buffering role and reducing the rigid impact.

[0044] Furthermore, the trailer connector includes a ball joint and a pin 22; a ball joint mounting seat 21 is provided on the extended end of the buffer connecting rod 20; the ball joint is mounted on the ball joint mounting seat 21; and the pin 22 is mounted on the ball joint.

[0045] The ball joint is used to allow the pin shaft 22 to swing on the ball joint mounting seat 21, so that when the trailer connector is towed by the trailer, it can adapt to the angle change of the length adjustment mechanism to ensure the stability of the towing.

[0046] In the aircraft towing rod provided by the utility model, the main controller and the slave controller both adopt the existing single-chip control module; the main wireless communication module and the slave wireless communication module both adopt the existing wireless communication module; the camera 9 adopts the existing camera; the display screen adopts the existing display screen; the key panel adopts the existing key panel; the locking drive motor 10, the telescopic drive motor 14, and the swing drive motor 24 all adopt the existing stepper motor, and the locking drive circuit, the telescopic drive circuit and the swing drive circuit respectively adopt the corresponding stepper motor drive circuit; the electric telescopic rod 28 adopts the existing electric telescopic rod, and the folding drive circuit adopts the corresponding electric telescopic rod drive circuit; the ball hinge adopts the existing ball hinge type reel coupling.

[0047] As described above, although the present invention has been shown and described with reference to specific preferred embodiments, it should not be interpreted as limiting the present invention itself. Various changes can be made to it in form and detail without departing from the spirit and scope of the present invention defined in the appended claims.

Claims

1. An aircraft towing rod, characterized in that: It comprises a handheld terminal, a control box (19), a locking head mechanism, a wheeled support mechanism, a swing adjustment mechanism, a folding drive mechanism, a length adjustment mechanism, a buffer connection mechanism and a trailer connection head; The locking head mechanism is installed on one end of the length adjustment mechanism and is used to lock on the aircraft landing gear; the buffer connection mechanism is connected and installed between the other end of the length adjustment mechanism and the trailer connection head and is used for buffering, and the trailer connection head is used to be towed by the trailer; the middle part of the length adjustment mechanism is swing-mounted on the swing adjustment mechanism, and the swing adjustment mechanism drives the length adjustment mechanism to swing horizontally, and the length of the length adjustment mechanism is adjustable; the wheel support mechanism is installed on the swing adjustment mechanism and is used to provide mobile support for the swing adjustment mechanism; the two ends of the folding drive mechanism are respectively hinged on the wheel support mechanism and the length adjustment mechanism, and are used to adjust the angle between the length adjustment mechanism and the wheel support mechanism; a main controller and a main wireless communication module electrically connected to the main controller are installed in the control box (19); the swing adjustment mechanism, the folding drive mechanism, the length adjustment mechanism and the locking head mechanism are all driven and controlled by the main controller; a slave controller and a slave wireless communication module electrically connected to the slave controller are arranged in the handheld terminal, and the slave wireless communication module communicates wirelessly with the main wireless communication module.

2. The aircraft tow bar according to claim 1, characterized in that: The handheld terminal comprises a terminal housing (23), a key panel and a display screen; the slave controller and the slave wireless communication module are both located in the terminal housing (23); the key panel and the display screen are both mounted on the terminal housing (23) and are both electrically connected to the slave controller.

3. The aircraft tow bar according to claim 1, characterized in that: The length adjustment mechanism comprises a supporting main pipe (1), a length telescopic rod (3), a telescopic driving screw rod (13) and a telescopic driving motor (14); one end of the length telescopic rod (3) is inserted into the supporting main pipe (1); a locking head mechanism is installed on the other end of the length telescopic rod (3); the telescopic driving screw rod (13) is rotatably installed on the supporting main pipe (1) and is used to drive the length telescopic rod (3) to telescopically move along the supporting main pipe (1); the telescopic driving motor (14) is used to drive the telescopic driving screw rod (13) to rotate and is electrically connected to a main controller via a telescopic driving circuit.

4. The aircraft tow bar according to claim 1, characterized in that: The locking head mechanism comprises a locking seat (5) and a locking unit; the locking unit comprises a locking drive motor (10), a locking drive screw (31) and a locking pressure plate (7); The locking seat (5) is fixed on the length adjustment mechanism through a positioning plate (4); a locking notch (8) is provided on the locking seat (5); a guide seat (6) is provided on the locking seat (5); a locking pressure plate (7) slides through the guide seat (6) and is used to lock the landing gear in cooperation with the locking notch (8); a locking drive screw (31) is rotatably mounted on the positioning plate (4) through a rotating seat and is used to drive the locking pressure plate (7) to slide along the guide seat (6); a locking drive motor (10) is used to drive the locking drive screw (31) to rotate and is electrically connected to a main controller through a locking drive circuit; a camera (9) electrically connected to the main controller is installed on the rotating seat through a vertical rod (29) and is used to collect an image at the locking notch (8).

5. The aircraft tow bar according to claim 1, characterized in that: The swing adjustment mechanism comprises a bar seat (16), a swing drive screw rod (26), a swing sliding seat (25) and a swing drive motor (24); the middle part of the length adjustment mechanism is hingedly mounted on the bar seat (16); the swing sliding seat (25) is longitudinally slidably mounted on the bar seat (16); the swing drive screw rod (26) is rotationally mounted on the bar seat (16) and is used to drive the swing sliding seat (25) to move longitudinally; the swing drive motor (24) is used to drive the swing drive screw rod (26) to rotate and is electrically connected to a main controller via a swing drive circuit; and a wheel support mechanism is mounted on the swing sliding seat (25).

6. The aircraft tow bar according to claim 1, characterized in that: The wheeled support mechanism comprises a main shaft (17), a support column (27) and two support rollers (18); the main shaft (17) is longitudinally fixed on the swing adjustment mechanism through the support column (27); and the two support rollers (18) are rotatably mounted on both ends of the main shaft (17).

7. The aircraft tow bar according to claim 1, characterized in that: The folding drive mechanism comprises an electric telescopic rod (28); two ends of the electric telescopic rod (28) are respectively hinged on the length adjustment mechanism and the wheel support mechanism, and are electrically connected to the main controller through the folding drive circuit.

8. The aircraft tow bar according to claim 1, characterized in that: The buffer connection mechanism comprises a buffer connection tube (2), a buffer connection rod (20) and a friction damper; one end of the buffer connection tube (2) is fixed on the length adjustment mechanism; a guide hole (32) is provided on the buffer connection tube (2); one end of the buffer connection rod (20) is inserted into the guide hole (32); a friction hole (33) having a diameter larger than that of the guide hole (32) is coaxially provided in the middle of the guide hole (32); the friction damper is installed on the buffer connection rod (20) and is used to cooperate with the friction hole (33) to provide friction damping for the buffer connection rod (20); and the trailer connector is installed on the buffer connection rod (20).

9. The aircraft tow bar according to claim 1, characterized in that: The trailer connector comprises a ball joint and a pin (22); a ball joint mounting seat (21) is arranged on the buffer connection mechanism; and the pin (22) is mounted on the ball joint mounting seat (21) through the ball joint.

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