Light airplane draw bar with overload protection function

Abstract

The utility model relates to the technical field of airplane draw bars, in particular to a light airplane draw bar with an overload protection function, which comprises a bar piece fixedly connected onto a tractor; the motor is fixedly connected to the upper section of the rod piece; the upper section of the rod piece is rotationally connected with the T-shaped rod; the gears are fixedly connected to all the T-shaped rods; the upper section of the rod piece is rotationally connected with the inner gear ring; the connecting blocks are connected to the interiors of the two sections of the rod piece; and the spring is fixedly connected between the two connecting blocks. According to the utility model, the T-shaped rod is connected with the rod piece and can actively rotate to loosen the connection of the rod piece under an ultimate load, so that the automatic cutting-off of the device is realized, and the stress is buffered by the spring, so that the damage to an airplane caused by direct breakage of the device is avoided; the effects of improving the use safety of the traction rod and guaranteeing the safety of an airplane are achieved.

Description

Technical Field

[0001] The utility model relates to the technical field of aircraft towing rods, in particular to a light aircraft towing rod with an overload protection function. Background Art

[0002] As a crucial connection between the aircraft towing vehicle and the aircraft, the aircraft towbar is designed to ensure stable and efficient power transmission during towing operations. However, existing towbars often break when subjected to loads exceeding their designed capacity. This sudden breakage releases immense impact force, potentially causing unforeseen damage to the aircraft structure and threatening the overall safety of the aircraft.

[0003] Therefore, it is necessary to design a light aircraft tow bar with an overload protection function to improve the safety of the tow bar. Utility Model Content

[0004] In view of the defects of the existing technology, the utility model proposes a light aircraft towing bar with an overload protection function, aiming to improve the safety of the towing bar and ensure the safety of the aircraft.

[0005] The technical solution of the utility model is: a light aircraft towing rod with an overload protection function, comprising: a rod member, the rod member is fixedly connected to a towing vehicle, one of the two ends of the rod member is connected to the towing vehicle, and the other end is provided with a hook for connecting to an aircraft, and the rod member is composed of two sections;

[0006] A sensor is fixedly connected to the hook of the rod;

[0007] A motor is fixedly connected to the upper section of the rod, and the motor is electrically connected to the controller of the sensor;

[0008] A T-bar, wherein the upper section of the rod is rotatably connected to a T-bar, and at least three T-bars are provided. The output end of the motor is fixed to one of the T-bars. A slot is provided on the lower section of the rod, and the T-head of the T-bar can pass through the slot and abut against it. When the T-bar rotates, the T-head can move in the slot;

[0009] Gears, each of the T-bars is fixedly connected with a gear;

[0010] An inner gear ring is rotatably connected to the upper segment of the rod, and the inner gear ring is meshed with each gear;

[0011] Connecting blocks, with connecting blocks connected to both sections of the rod;

[0012] A spring is fixedly connected between the two connecting blocks.

[0013] Preferably, the connecting block in the upper section of the rod is fixedly connected in the section of the rod; further comprising a guide rail, the lower section of the rod is fixedly connected with the guide rail, and the connecting block in the lower section of the rod is slidably connected to the guide rail;

[0014] A handwheel is connected to the external thread of the lower section of the rod. The handwheel passes through the lower section of the rod and is rotatably connected to the connecting block inside the lower section of the rod.

[0015] Preferably, an anti-slip sleeve is further included, and the handwheel is fixedly connected to the outside of the handwheel.

[0016] Preferably, a display screen is further included. The rod is fixedly connected to the display screen, and the display screen is electrically connected to the controller of the sensor.

[0017] Preferably, a lighting lamp is further included, and a lighting lamp is fixedly connected to the hook position on the end of the rod.

[0018] Preferably, it further includes an adjusting caster, and the end of the rod away from the tractor is fixedly connected to the adjusting caster, and the adjusting caster can be extended and retracted to change the height.

[0019] Beneficial effects of the utility model:

[0020] The utility model is provided with a T-bar connecting the rods, and when the limit load is reached, the T-bar can actively rotate to loosen the connection with the rods, thereby achieving the automatic cutting of the utility model, and switching to the spring to buffer the force, thereby preventing the utility model from directly breaking and causing damage to the aircraft, thereby improving the safety of the tow bar and ensuring the safety of the aircraft. The utility model achieves the effect of adjusting the buffering capacity of the utility model by providing a movable connecting block to change the force required for the spring to deform, making the utility model suitable for different situations. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] Figure 1 It is a schematic diagram of the three-dimensional structure of the utility model.

[0022] Figure 2 It is a cross-sectional view of the internal structure of the utility model.

[0023] Figure 3 This is a schematic diagram of the connection structure of the handwheel, spring and connecting block of the utility model.

[0024] Figure 4 It is a schematic diagram of the three-dimensional structure of the utility model after being broken.

[0025] Description of the accompanying drawings: 1_tractor, 2_rod, 3_sensor, 4_motor, 5_gear, 6_inner gear ring, 7_T-bar, 8_spring, 9_guide rail, 10_handwheel, 11_anti-slip sleeve, 12_display, 13_light, 14_adjustable castor, 15_connecting block. DETAILED DESCRIPTION

[0026] The present invention will be further described below with reference to the accompanying drawings and specific embodiments.

[0027] Example: A light aircraft tow bar with overload protection function, combined with Figures 1-4 As shown, it includes: a rod 2, which is fixedly connected to the tractor 1, with its lower end connected to the tractor 1, and its upper end is provided with a hook for connecting the aircraft, and the rod 2 is composed of two segments; a sensor 3, a sensor 3 is fixedly installed on the hook of the rod 2, and the sensor 3 is used to sense the force on the traction rod; a motor 4, a motor 4 is fixedly installed on the upper segment of the rod 2, the motor 4 is electrically connected to the controller of the sensor 3, and the motor 4 is controlled by the sensor 3; a T-bar 7, a T-bar 7 is rotatably installed on the upper segment of the rod 2, and a total of four T-bars 7 are provided, the output end of the motor 4 is fixed to one of the T-bars 7, and four slots are provided on the lower segment of the rod 2 , the position of each insertion slot corresponds to each T-bar 7 one by one, and the T-head of each T-bar 7 can pass through each insertion slot and abut against it, thereby connecting the two segments of the rod 2 together. After each T-bar 7 is rotated, its T-head can move in each insertion slot, releasing the connection between the T-bar 7 and the two segments of the rod 2; gear 5, a gear 5 is fixedly installed on each T-bar 7; inner gear ring 6, an inner gear ring 6 is rotatably installed on the upper segment of the rod 2, and the inner gear ring 6 is engaged with each gear 5 to control the synchronous rotation of all T-bars 7; connecting block 15, a connecting block 15 is provided at both ends of the rod 2; spring 8, a spring 8 is fixedly installed between the two connecting blocks 15.

[0028] When using the towing bar to tow an aircraft, the towing vehicle 1 is driven close to the aircraft, and the hook of the rod 2 is hooked on the aircraft, and the towing vehicle 1 can be driven to tow the aircraft. During the towing process, when the load on the towing bar exceeds the carrying capacity of the towing bar, the force sensed by the sensor 3 will exceed the value preset on the sensor 3 in advance. At this time, the controller of the sensor 3 controls the motor 4 to start, and then controls the T-bar 7 to rotate. Figure 4 As shown, the T-head of the T-bar 7 is passed through the slot of the lower segment of the rod 2, so that the two segments of the rod 2 can be separated, and the spring 8 is stretched to buffer the force on the towing rod, thereby avoiding damage to the aircraft caused by the breakage of the rod 2, thereby achieving the effect of improving the safety of the use of the towing rod and ensuring the safety of the aircraft.

[0029] Combine Figure 1-Figure 3As shown, the connecting block 15 in the upper section of the rod 2 is fixedly installed in the section of the rod 2, and also includes a guide rail 9, the guide rail 9 is fixedly installed inside the lower section of the rod 2, and the connecting block 15 in the lower section of the rod 2 is slidably installed on the guide rail 9; a handwheel 10, the external thread of the lower section of the rod 2 is installed with a handwheel 10, the handwheel 10 passes through the lower section of the rod 2, and is rotatably connected to the connecting block 15 therein.

[0030] By turning the hand wheel 10 and moving it up and down relative to the lower section of the rod 2, the connecting block 15 in the lower section of the rod 2 can be controlled to move up and down, thereby controlling the deformation of the spring 8 and changing the force required for the deformation of the spring 8, thereby achieving the effect of adjusting the buffering capacity of the traction rod, so that the traction rod can be applied to different situations.

[0031] Combine Figure 1-Figure 2 As shown, the hand wheel 10 further includes an anti-slip cover 11, which is fixedly mounted on the outside of the hand wheel 10. The anti-slip cover 11 increases the friction of the hand wheel 10 so that the user can rotate the hand wheel 10 more easily.

[0032] Combine Figure 1 As shown, a display screen 12 is also included. The display screen 12 is fixedly mounted on the rod 2 and is electrically connected to the controller of the sensor 3 for displaying the force data sensed by the sensor 3. The display screen 12 can facilitate the user to control the use of the traction bar.

[0033] Combine Figure 1 As shown, a lighting lamp 13 is also included, and a lighting lamp 13 is fixedly installed at the hook position of the rod 2. The lighting lamp 13 can provide lighting when the towing bar is connected to the aircraft, making the use of the towing bar convenient.

[0034] Combine Figure 1 As shown, the tractor bar 2 further includes an adjusting caster 14, which is fixedly mounted on the end of the rod 2 away from the tractor 1. The adjusting caster 14 can be extended and retracted to change the height. The adjusting caster 14 can support the tractor bar and facilitate movement of the tractor bar when it is not connected to the aircraft.

[0035] The technical principles of the embodiments of the present invention have been described above in conjunction with specific embodiments. These descriptions are intended solely to explain the principles of the embodiments of the present invention and should not be construed in any way as limiting the scope of protection of the embodiments of the present invention. Based on the explanations herein, those skilled in the art will be able to conceive of other specific implementations of the embodiments of the present invention without inventive effort, and these implementations will fall within the scope of protection of the embodiments of the present invention.

Claims

1. A light aircraft tow bar with overload protection function, characterized by: include: The rod (2) is fixedly connected to the tractor (1), and one of its two ends is connected to the tractor (1). A hook for connecting to an aircraft is provided on the other end, and the rod (2) is composed of two sections; A sensor (3), wherein the hook of the rod (2) is fixedly connected with the sensor (3), and the sensor (3) is used to sense the force applied to the traction rod; A motor (4), the upper section of the rod (2) is fixedly connected to the motor (4), and the motor (4) is electrically connected to the controller of the sensor (3); A T-shaped rod (7) is rotatably connected to the upper section of the rod (2), and at least three T-shaped rods (7) are provided. The output end of the motor (4) is fixed to one of the T-shaped rods (7). A slot is provided on the lower section of the rod (2). The T-shaped head of the T-shaped rod (7) can pass through the slot and abut against it, connecting the two sections of the rod (2). After the T-shaped rod (7) is rotated, its T-shaped head can move in the slot, releasing the connection between the two sections of the rod (2) by the T-shaped rod (7); Gear (5), each of the T-shaped rods (7) is fixedly connected with a gear (5); An inner gear ring (6) is rotatably connected to the upper segment of the rod (2), and the inner gear ring (6) is meshed with each gear (5) to control the synchronous rotation of all T-shaped rods (7); A connecting block (15), wherein both sections of the rod (2) are connected with a connecting block (15); A spring (8) is fixedly connected between the two connecting blocks (15).

2. A light aircraft tow bar with overload protection function as claimed in claim 1, characterized in that: The connecting block (15) in the upper section of the rod (2) is fixedly connected in the section of the rod (2); and further comprises a guide rail (9), the guide rail (9) being fixedly connected in the lower section of the rod (2), and the connecting block (15) in the lower section of the rod (2) being slidably connected to the guide rail (9); The hand wheel (10) is connected to the outer thread of the lower section of the rod (2) by a hand wheel (10), and the hand wheel (10) passes through the lower section of the rod (2) and is rotatably connected to the connecting block (15) inside the lower section.

3. A light aircraft tow bar with overload protection function as claimed in claim 2, characterized in that: It also includes an anti-slip sleeve (11), and the hand wheel (10) is fixedly connected to the anti-slip sleeve (11).

4. A light aircraft tow bar with overload protection function as claimed in claim 3, characterized in that: It also includes a display screen (12), the rod (2) is fixedly connected to the display screen (12), and the display screen (12) is electrically connected to the controller of the sensor (3) to display the force data sensed by the sensor (3).

5. The light aircraft tow bar with overload protection function according to claim 4, characterized in that: It also includes a lighting lamp (13), and the lighting lamp (13) is fixedly connected to the hook position on the end of the rod (2).

6. The light aircraft tow bar with overload protection function according to claim 5, characterized in that: It also includes an adjusting caster (14). The end of the rod (2) away from the tractor (1) is fixedly connected with the adjusting caster (14), and the adjusting caster (14) can be extended and retracted to change the height.

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