Aircraft traction auxiliary device and use method

Abstract

The present invention relates to the technical field of airport ground special equipment, and discloses an aircraft towing auxiliary device and a method of use, including a movable T-shaped base platform for supporting an auxiliary lifting platform and a main lifting platform; the auxiliary lifting platform is used to realize the vertical lifting of the aircraft wheel axle; the main lifting platform can move along the axis of the wheel and realize the independent vertical lifting of the left and right tires of the front wheel of the aircraft; and the automatic control platform is used to realize the automatic control of the entire device. The present invention can realize wheel lifting and towing operations for the towing of small and medium-sized aircraft, avoiding the waste of resources caused by the dispatch of traditional tractors; compared with traditional tractors, the present invention can adapt to the working condition of a single-sided tire blowout through the wheel lifting plate frame that can be independently controlled on both sides, which is more practical and suitable for wide promotion and use.

Description

Technical Field

[0001] The invention belongs to the technical field of airport ground special equipment, and in particular relates to an aircraft traction auxiliary device and a use method thereof. Background Art

[0002] The rapid development of the civil aviation transportation industry has led to a significant increase in the number of operating aircraft. The increase in the number of routes and flight density has put forward higher requirements on airport ground support facilities. Especially in the case of a high frequency of small-scale emergencies, the occupation of the runway will seriously affect the flight plans of other flights. How to quickly respond to small-scale accidents and quickly and efficiently transfer faulty aircraft plays a key role in ensuring the order and normal operation of the airport ground. At present, for accidents such as small and medium-sized aircraft running off the runway and the breaking of the landing gear, the aircraft is usually supported by a lifting airbag, such as patent CN 211310696 U, and then the aircraft is transferred by using a lifting crane, a tractor trailer and other transport tools; the front wheel of the aircraft is lifted by the wheel holding device of the aircraft tractor and towed to the destination, such as the wheel holding device disclosed in CN 106742031 B and CN 104002986 A, the front wheel of the aircraft is lifted by hydraulic drive, towed to a designated maintenance location, the wheel is lowered, the tractor is away from the aircraft, and then the aircraft wheel is inspected, repaired or replaced by the aircraft wheel maintenance lifting device disclosed in CN 108751038 A. However, aircraft tractors are expensive, costing about RMB 1 million per unit. In 2008, the towbarless aircraft tractors introduced by my country for the Airbus A380 even cost as much as RMB 11 million per unit. With the increase in flights, the scheduling of aircraft tractors has become tight. If they are arranged to perform lifting and towing operations on small aircraft for a long time, it will cause a waste of resources. The operation of the tractor requires full-time maintenance personnel, which requires a high level of operation. The wheel-holding mechanism of the aircraft tractor has a small space and can only perform lifting and towing operations on the wheels. There is no operating space for further maintenance of the tires. In addition, special aircraft wheel maintenance and lifting equipment is used, which makes some simple wheel maintenance work complicated and wastes resources.

[0003] Secondly, aircraft tractors have a large lifting capacity. For the ground transfer of small and medium-sized aircraft, the use of aircraft tractors will waste resources, making the towing and transfer work arrangements for medium and large aircraft more compact, reducing the time and space tolerance, and not utilizing the ground support equipment dispatch at airports with multiple aircraft types, flights and high passenger density, which is not conducive to improving the airport operation efficiency during periods of heavy workload;

[0004] Thirdly, for the wheel maintenance needs of small and medium-sized aircraft, the use of a fixed lifting device is not convenient for the transfer of the aircraft's position, and the aircraft tractor is not convenient for wheel maintenance operations because the space around the wheel is greatly reduced after lifting the wheel, which is limited by its working range. An automatic aircraft lifting device proposed in CN202110942096.3 has the characteristics of simple operation, low cost, and convenient wheel maintenance. However, its lifting plate frame is an integral whole and cannot well meet the working conditions of a single-sided wheel blowout, which limits its scope of use to a certain extent; and the entire lifting plate frame is a cantilever beam structure, and stress is easily concentrated during the lifting process, which requires a high strength for the lifting mechanism, increasing the manufacturing difficulty and cost. Summary of the invention

[0005] In order to solve the above technical problems, the basic concept of the technical solution adopted by the present invention is:

[0006] An aircraft traction auxiliary device comprises a movable T-shaped base platform for supporting an auxiliary lifting platform and a main lifting platform; the auxiliary lifting platform is used to realize vertical lifting of the aircraft wheel axle; the main lifting platform can move along the wheel axis direction and realize independent vertical lifting of the left and right tires of the aircraft front wheel; and an automatic control platform is used to realize automatic control of the entire device.

[0007] As a preferred technical solution, the movable T-shaped base platform mainly includes a base and a translation base fixed at one end of the base, universal wheels are fixed on the base and the bottom of the translation base, and two horizontally aligned translation slides are slidably connected to the upper part of the translation base, and a main lifting platform is fixed on each translation slide.

[0008] As a preferred technical solution, a servo motor is fixed at one end of the translation base, and a translation screw is fixed at the driving end of the servo motor. The translation screw is arranged in the middle of the inner cavity of the translation base, half of the translation screw is left-handed thread and half is right-handed thread, and the translation screw is threadedly engaged with and passes through the middle position of the bottom of the two translation slides.

[0009] As a preferred technical solution, the main lifting platform mainly includes a lifting plate frame installed on the upper part of the translation slide, a lifting stepper motor is fixed on the upper part of the lifting plate frame, a lifting screw is fixed on the driving end of the lifting stepper motor, and the lifting screw is arranged in the middle of the lifting plate frame; a lifting slide is slidably connected to the lifting plate frame, and the lifting screw is threaded and passes through the middle of the lifting slide; a lifting arm is arranged on the front side of each lifting slide; the lifting arm includes a horizontal main bearing plate, and a rear baffle and a front baffle with adjustable spacing are respectively arranged on both sides of the main bearing plate, and the lifting slide is fixedly connected to the main bearing plate by a Z-shaped plate.

[0010] As a preferred technical solution, the auxiliary lifting platform is located in the gap between the two main bearing plates, and includes a scissors frame for lifting the wheel axle, a wheel axle lifting surface and a second electric push rod. The scissors frame is fixed to the base by bottom bolts, and the upper end of the scissors frame is connected to the wheel axle lifting surface, which is used to fit the contact surface of the front landing gear wheel axle to increase stability during the lifting process; a second displacement sensor is installed in the middle of one side of the bottom of the scissors frame, and the bottom of the second electric push rod is movably hinged to the upper part of the base.

[0011] As a preferred technical solution, a baffle stepper motor is arranged in the middle of the upper end of the main bearing plate, a screw rod is fixed to the driving end of the baffle stepper motor, the screw rod thread is screwed through the bottom of the front baffle, the bottom of the front baffle is slidably connected to the main bearing plate, and a pressure sensor is arranged in the middle position of the upper part of the main bearing plate.

[0012] As a preferred technical solution, an electric push rod assembly is provided at one end of the main load-bearing plate away from the lifting slide, and the electric push rod assembly mainly includes an electric push rod base plate and a first electric push rod vertically fixed upward on the upper part of the electric push rod base plate, and an electric push rod mounting plate is fixed at the upper end of the first electric push rod; the electric push rod mounting plate is connected to the main load-bearing plate through an L-shaped plate, so that the vertical movement of the main lifting platform is realized through the joint action of the first electric push rod and the lifting screw; a first displacement sensor is installed between the L-shaped plate and the electric push rod base plate.

[0013] As a preferred technical solution, the automatic control platform includes a human-computer interaction interface, a first displacement sensor, a second displacement sensor, a pressure sensor, a controller, a lifting stepper motor, a servo motor, a baffle stepper motor, a first electric push rod, and a second electric push rod; the human-computer interaction interface is fixed between the auxiliary lifting platform and the main lifting platform.

[0014] As a preferred technical solution, a handle mounting seat is provided at one end of the upper portion of the base close to the lifting screw, and a traction rod is movably hinged at the upper end of the handle mounting seat.

[0015] The present invention also discloses a method for using the aircraft traction auxiliary device, comprising the following steps:

[0016] S1. The maintenance staff connects the towing rod of the aircraft towing auxiliary device to the rear of a light power unit such as a small vehicle, or manually pulls it to the work area to carry out the next step of the lifting process;

[0017] S2. Turn on the servo motor to make the two translation slides drive their respective lifting plate frames and main bearing plates to separate to both sides. The separation distance of the two main bearing plates must be greater than the maximum width between the outer sides of the two wheels, so that the maintenance personnel can push the aircraft traction auxiliary device to make the auxiliary lifting platform enter directly under the wheel axle;

[0018] S3. The wheel axle lifting surface on the upper end of the auxiliary lifting platform is aligned with the axle of the wheel, and the second electric push rod of the auxiliary lifting platform is controlled to move to lift the scissor frame, so that the wheel axle lifting surface moves vertically upward until it contacts the wheel axle, and continues to lift vertically upward, so that the wheel is off the ground and raised to a height exceeding the lowest height of the main bearing plate of the main lifting platform and then maintained;

[0019] S4, by controlling the servo motor, the two translation slides and the lifting plate frame and the main load-bearing plate fixed thereon move toward the direction of the wheels, until the main load-bearing plates move to just below the wheels on both sides, and the translation slides stop moving and remain;

[0020] S5. Simultaneously start the first electric push rod and the lifting stepper motors of the two main lifting platforms to lift the main bearing plate until it contacts the bottom of the wheel, start the baffle stepper motor to move the front baffle toward the wheel under the action of the lead screw until the front and rear baffles fix the wheel, automatically or manually insert the latch on the wheel, continue lifting until the lifting load of the two wheels reaches a specified value, then stop lifting, or according to needs, until the wheel is lifted to a specified height;

[0021] S6. After completing the automatic wheel lifting operation, wait for the maintenance personnel to further operate the aircraft through the aircraft traction auxiliary device.

[0022] Compared with the prior art, the present invention has the following beneficial effects:

[0023] The present invention is proposed to address the deficiencies of current airport ground support facilities in handling small aircraft accidents and ground transfer of small and medium-sized aircraft. The aircraft traction auxiliary device of the present invention can be used as a multi-purpose special ground support equipment for airports, and is applied to small aircraft accidents to replace traditional lifting airbags to lift the wheels and then transfer them in time. The left and right independent lifting can be applied to the condition of a single-sided tire blowout. Each lifting plate frame has two lifting points, which makes the lifting more stable. At the same time, it can be applied to the ground transfer and wheel maintenance of small and medium-sized aircraft, reducing the complexity of the types of special equipment at airports, reducing the operating costs of airport ground facilities, and improving the efficiency of airport ground support work. The present invention has a large expansion and modification space and a wide range of application scenarios.

[0024] Specific:

[0025] (1) For towing of small and medium-sized aircraft, it can realize wheel lifting and towing operations, avoiding the waste of resources caused by deploying traditional towing vehicles;

[0026] (2) Compared with the conventional tractor, the present invention can adapt to the working condition of a single-side tire blowout by using the independently controlled lifting arms and wheel lifting arms on both sides;

[0027] (3) The present invention is equipped with an automatic control platform, which can realize automatic lifting;

[0028] (4) The present invention is equipped with multiple sensors to measure and feedback lifting data to ensure safe and stable operation;

[0029] (5) The opening and closing of the two sets of lifting arms of the present invention are adapted to the wheel tracks of various small and medium-sized aircraft, and have strong adaptability;

[0030] (6) The present invention provides a large operating space for maintenance personnel, is simple to operate, and is convenient for maintenance work;

[0031] The specific implementation modes of the present invention are further described in detail below in conjunction with the accompanying drawings. BRIEF DESCRIPTION OF THE DRAWINGS

[0032] In the attached picture:

[0033] Figure 1 is a three-dimensional diagram of a three-dimensional aircraft towing auxiliary device constructed according to one embodiment of the present invention;

[0034] Figure 2 is in accordance with Figure 1 Schematic diagram of the T-shaped base platform of the lifting device;

[0035] Figure 3 is in accordance with Figure 1 A schematic diagram of the auxiliary lifting platform in FIG.

[0036] Figure 4 is in accordance with Figure 1 Schematic diagram of the main lifting platform in FIG.

[0037] Figure 5 is in accordance with Figure 4 Schematic diagram of the main lifting platform (without the electric push rod assembly);

[0038] Figure 6 is in accordance with Figure 4 Schematic diagram of the lifting arm in FIG.

[0039] Figure 7 is in accordance with Figure 4 Schematic diagram of the lifting screw of the main lifting platform;

[0040] Figure 8 is in accordance with Figure 4 Schematic diagram of the electric push rod of the main lifting platform;

[0041] Fig. 9 is in accordance with Figure 1 A schematic diagram of a control panel of a lifting device;

[0042] Fig.10 Yes, according to Figure 1 Schematic diagram of the tow bar of the lifting device in FIG.

[0043] In the figure: 1-lifting screw; 101-lifting stepper motor; 102-lifting slide; 103-lifting plate frame; 2-translation screw; 201-translation slide; 202-servo motor; 203-translation base; 3-lifting arm; 301-rear baffle; 302-main bearing plate; 303-front baffle; 304-baffle stepper motor; 4-universal wheel; 5-electric push rod assembly; 501-first electric push rod; 502-electric push rod mounting plate; 6-scissor frame; 601-second electric push rod; 602-machine wheel axle lifting surface; 7-machine wheel; 8-control panel; 801-first displacement sensor; 802-second displacement sensor; 803-pressure sensor; 9-traction rod; 901-handle mounting seat; 10-Z-type plate; 11-L-type plate; 12-electric push rod bottom plate; 13-base; 14-human-computer interaction interface. DETAILED DESCRIPTION

[0044] In order to make the purpose, technical solutions and advantages of the embodiments of the present invention clearer, the technical solutions in the embodiments will be clearly and completely described below in conjunction with the drawings in the embodiments of the present invention. The following embodiments are used to illustrate the present invention.

[0045] like Figures 1 to 3 As shown, an aircraft traction auxiliary device includes a movable T-shaped base platform for supporting an auxiliary lifting platform and a main lifting platform; the auxiliary lifting platform is used to realize vertical lifting of the aircraft wheel axle; the main lifting platform can move along the axis direction of the wheel and realize the fixation of the wheel and the independent vertical lifting of the left and right tires of the aircraft wheel; and the automatic control platform is used to realize automatic control of the entire device.

[0046] like Figures 1 to 10As shown, the movable T-shaped base platform mainly includes a base 13 and a translation base 203 fixed at one end of the base 13. Universal wheels 4 are fixed at the four corners of the bottom of the base 13 and the translation base 203. Two horizontally aligned translation slides 201 are slidably connected to the upper part of the translation base 203; a servo motor 202 is fixed at one end of the translation base 203, and a translation screw 2 is fixed at the driving end of the servo motor 202. The translation screw 2 is arranged in the middle of the inner cavity of the translation base 203. The translation screw 2 is a bidirectional screw, half of which is a left-handed thread and the other half is a right-handed thread. The translation screw 2 is threadedly screwed and penetrates the middle position of the bottom of the two translation slides 201. The servo motor 202 is a forward and reverse motor, so it can drive the translation screw 2 to rotate forward and reverse, and then drive the two translation slides 201 to move closer or farther from each other. A set of main lifting platforms is fixed on each translation slide 201. The servo motor 202 is connected to the translation screw 2 through a coupling, and the position of the translation slide 201 is controlled by controlling the rotation of the servo motor 202. Other existing technologies can also be used, such as arranging the servo motor 202 in the middle of the bidirectional screw and driving the bidirectional screw to rotate through a transmission mechanism such as a gear, a pulley, and a chain, so as to ensure that the entire main lifting platform is in a suitable position.

[0047] like Figures 1 to 10As shown, the main lifting platform mainly includes a lifting plate frame 103 installed on the upper part of the translation slide 201, a lifting stepping motor 101 is fixed on the upper part of the lifting plate frame 103, a lifting screw 1 is fixed on the driving end of the lifting stepping motor 101, and the lifting screw 1 is arranged in the middle of the lifting plate frame 103, a lifting slide 102 is slidably connected to the lifting plate frame 103, and the lifting screw thread is screwed through the middle of the lifting slide 102; a lifting arm 3 is arranged on the front side of each lifting slide 102; the lifting arm 3 is a cantilever structure, including a horizontal main load-bearing plate 302, a main The rear baffle 301 and the front baffle 303 are respectively arranged on both sides of the bearing plate 302; the lifting slide 102 and the main bearing plate 302 are fixedly connected by the Z-shaped plate 10, or are fixedly connected by welding or bolting; a baffle stepper motor 304 is arranged in the middle of the upper end of the main bearing plate 302, and a screw rod is fixed to the driving end of the baffle stepper motor 304, and the screw rod is threaded and penetrates the bottom of the front baffle 303, and the bottom of the front baffle 303 is slidably connected to the main bearing plate 302, and a pressure sensor 803 is arranged in the middle position of the upper part of the main bearing plate 302. The main bearing plate can be a steel plate, a profile, etc., the rear baffle 301 is fixed on the main bearing plate 302, and the front baffle 303 can be adjusted to open and close by a motor or manually, and can be suitable for wheels of different diameters. The main lifting platform can be driven to move simultaneously by controlling the left and right movement of the two translation slides 201 to adapt to aircraft wheels of different widths, and the two sets of lifting arms have independent lifting functions, which can be applied to abnormal conditions of the left and right tires of the front wheels of the aircraft, such as damage or blowout of one of the tires. The pressure sensor is used to measure the wheel pressure borne by the two lifting arms. Through the control algorithm, the lifting force of the left and right wheels can be consistent during the lifting process, and the coordinated lifting of the left and right lifting arms can be achieved. In addition, the force signal fed back by the pressure sensor can be combined to achieve the load distribution of the total axle load of the front wheels of the aircraft on the auxiliary lifting platform and the left and right wheel lifting arms of the main lifting platform, so as to avoid damage caused by stress concentration in the structure.

[0048] like Figures 1 to 10 As shown, in a specific embodiment, the auxiliary lifting platform is located in the gap between the two main bearing plates, and mainly includes a scissor frame 6 for lifting the wheel axle, a wheel axle lifting surface 602 and a second electric push rod 601. The scissor frame 6 is fixed to the base 13 by bottom bolts. The wheel axle lifting surface 602 connected to the upper end of the scissor frame 6 is used to fit the contact surface of the front landing gear wheel axle to increase the stability during the lifting process. A second displacement sensor 802 is installed in the middle of one side of the bottom of the scissor frame 6, and the bottom of the second electric push rod 601 is movably hinged to the upper part of the base 13. In this setting, the telescopic movement of the scissor frame is realized by the second electric push rod, and the vertical movement of the contact surface is realized by the telescopic movement of the scissor frame 6.

[0049] like Figures 1 to 10As shown, further, an electric push rod assembly is arranged at one end of the main bearing plate 302 away from the lifting slide 102. The electric push rod assembly mainly includes an electric push rod bottom plate 12 and a first electric push rod 501 vertically fixed to the upper part of the electric push rod bottom plate 12. An electric push rod mounting plate 502 is fixed to the upper end of the first electric push rod 501. The electric push rod mounting plate 502 is riveted to the main bearing plate through an L-shaped plate, so that the vertical movement of the main lifting platform is achieved through the joint action of the first electric push rod 501 and the lifting screw 1. A first displacement sensor 801 is installed between the L-shaped plate and the electric push rod bottom plate. Through the coordinated control of the lifting stepper motor 101 and the first electric push rod, the synchronous lifting of the front and rear ends of the main bearing plate is achieved, which can improve the stress distribution of the main bearing plate during the lifting process. The upper end of the first electric push rod can be connected to the L-shaped plate through a flexible connection with greater rigidity to avoid motion interference caused by synchronous lifting errors.

[0050] A handle mounting seat 901 is provided at the upper part of the upper part of the base 13 near one end of the lifting screw 1, and a traction rod 9 is movably hinged at the upper end of the handle mounting seat 901. A through hole is provided on the handle mounting seat 901, and the handle mounting seat 901 is fixedly connected to the bottom plate of the lifting device by bolts. The end of the traction rod 9 also has a through hole with the same diameter as the handle mounting seat 901, and the two through holes are connected together by bolts. The lifting arms on both sides can move from both sides to the center through the bottom ball screw or slide rail, and the lifting arms move to accurately contact the bottom of the machine wheel. The lifting arms on both sides can be controlled by the lower computer to realize the synchronous movement and lifting of the first electric push rod and the lifting screw, and can realize synchronous and stable lifting of the machine wheel. Under working conditions such as a single machine wheel puncture, asynchronous and stable lifting can be achieved through the pressure sensor 803. The first and second displacement sensors provide real-time feedback on the lifting heights on both sides. In the case of height differences, the lifting speed on one side is adjusted to achieve synchronous lifting adjustment.

[0051] The automatic control platform includes a human-machine interaction interface 14, a first displacement sensor, a second displacement sensor, a pressure sensor, a controller, a lifting stepper motor, a servo motor, a baffle stepper motor, a first electric push rod, and a second electric push rod; all of the above components can be purchased; in this setting, a human-machine interaction interface is fixed between the auxiliary lifting platform and the main lifting platform, and the human-machine interaction interface can display the real-time signal data of each displacement and force sensor related to the auxiliary lifting platform and the left and right lifting arms of the main lifting platform. When the displacement and load exceed the limit value, it has early warning and automatic protection functions such as alarm in the form of voice but not limited to, motion stop, etc., and also has control buttons to facilitate the control operation of the maintenance personnel.

[0052] Preferably, universal wheels 4 are fixedly mounted at the four corners of the bottom of the electric push rod base plate 12. All universal wheels of the present invention are equipped with brake switches to ensure the safe parking of the aircraft traction auxiliary device.

[0053] The present invention also discloses a method for using the aircraft traction auxiliary device, which specifically comprises the following steps:

[0054] S1, the maintenance staff connects the traction rod 9 of the aircraft traction auxiliary device to the rear of a light power device such as a small vehicle, or manually pulls it to the working area to carry out the next step of the lifting process;

[0055] S2. Turn on the servo motor 202, so that the two translation slides 201 drive their respective lifting plate frames 103 and the main bearing plates 302 to separate to both sides. The separation distance of the two main bearing plates 302 must be greater than the maximum width between the outer sides of the two wheels, so that the maintenance personnel can push the aircraft traction auxiliary device to make the auxiliary lifting platform enter directly under the wheel axle;

[0056] S3, the wheel axle lifting surface 602 on the upper end of the auxiliary lifting platform is aligned with the axle of the wheel 7, and the second electric push rod 601 of the auxiliary lifting platform is controlled to move to lift the scissor frame 6, so that the wheel axle lifting surface 602 moves vertically upward until it contacts the wheel axle, and continues to lift vertically upward, so that the wheel is off the ground and raised to a height exceeding the lowest height of the main bearing plate 302 of the main lifting platform and then maintained;

[0057] S4, by controlling the servo motor 202, the two translation slides 201 and the lifting plate frame 103 and the main bearing plate 302 fixed thereon move toward the direction of the wheels, until the main bearing plate 302 moves to the bottom of the wheels on both sides respectively, and the translation slides 201 stop and keep moving;

[0058] S5. Simultaneously start the first electric push rod 501 and the lifting stepper motors 101 of the two main lifting platforms to lift the main bearing plate 302 until it contacts the bottom of the wheel, stop lifting and maintain the height; start the baffle stepper motor 304 to move the front baffle 303 toward the wheel under the action of the lead screw until the front and rear baffles fix the wheel, automatically or manually insert the latch on the wheel, continue lifting until the lifting load of the two wheels reaches a specified value, then stop lifting, or according to needs, until the wheel is lifted to a specified height;

[0059] S6. The lifting process can be controlled through the human-machine interface or manual buttons. The lifting process status can be displayed on the human-machine interface. If there is an alarm such as limit or over-limit, the lifting process can be automatically stopped. After completing the automatic lifting operation of the wheels, wait for the maintenance personnel to tow the aircraft or perform maintenance operations through the aircraft towing auxiliary device.

[0060] The above shows and describes the basic principles and main features of the present invention and the advantages of the present invention. It should be understood by those skilled in the art that the present invention is not limited to the above embodiments. The above embodiments and descriptions are only for explaining the principles of the present invention. Without departing from the spirit and scope of the present invention, the present invention may have various changes and improvements, which fall within the scope of the present invention to be protected. The scope of protection of the present invention is defined by the attached claims and their equivalents.

Claims

1. An aircraft traction auxiliary device, characterized in that: It includes a movable T-shaped base platform for supporting the auxiliary lifting platform and the main lifting platform; the auxiliary lifting platform is used to realize the vertical lifting of the aircraft wheel axle; the main lifting platform can move along the axis of the wheel and realize the independent vertical lifting of the left and right tires of the aircraft wheel; the automatic control platform is used to realize the automatic control of the entire device; The main lifting platform mainly comprises a lifting plate frame (103) installed on the upper part of the translation slide (201), a lifting stepper motor (101) is fixed on the upper part of the lifting plate frame (103), a lifting screw (1) is fixed on the driving end of the lifting stepper motor (101), and the lifting screw (1) is arranged in the lifting plate frame (103); a lifting slide (102) is slidably connected to the lifting plate frame (103), and the lifting screw is threadedly screwed through the lifting slide (102); a lifting arm (3) is arranged on the front side of each lifting slide (102); the lifting arm (3) comprises a horizontal main bearing plate (302), and a rear baffle (301) and a front baffle (303) with adjustable spacing are respectively arranged on both sides of the main bearing plate, and the lifting slide (102) is fixedly connected to the main bearing plate (302) through a Z-shaped plate (10); An electric push rod assembly is arranged at one end of the main bearing plate (302) away from the lifting slide (102), and the electric push rod assembly mainly comprises an electric push rod base plate (12) and a first electric push rod (501) vertically fixed to the upper part of the electric push rod base plate (12), and an electric push rod mounting plate (502) is fixed to the upper end of the first electric push rod (501); the electric push rod mounting plate (502) is connected to the main bearing plate (302) through an L-shaped plate, so that the vertical movement of the main lifting platform is realized through the joint action of the first electric push rod (501) and the lifting screw (1); a first displacement sensor (801) is installed between the L-shaped plate and the electric push rod base plate; The auxiliary lifting platform is located in the gap between the two main bearing plates (302), and includes a scissor frame (6) for wheel lifting, a wheel axle lifting surface (602) and a second electric push rod (601); the scissor frame (6) is fixed to the base (13) by bottom bolts, and the upper end of the scissor frame (6) is connected to the wheel axle lifting surface (602) for fitting the contact surface of the front landing gear wheel axle to increase stability during the lifting process; a second displacement sensor (802) is installed in the middle of one side of the bottom of the scissor frame (6), and the bottom of the second electric push rod (601) is movably hinged to the upper part of the base (13).

2. The aircraft traction auxiliary device according to claim 1, characterized in that: The movable T-shaped base platform mainly comprises a base (13) and a translation base (203) fixed at one end of the base (13); universal wheels (4) are fixed at the bottom of the base (13) and the translation base (203); the upper part of the translation base (203) is slidably connected to two horizontally aligned translation slides (201); and each translation slide (201) is fixed with a set of main lifting platforms.

3. The aircraft traction auxiliary device according to claim 2, characterized in that: A servo motor (202) is fixed to one end of the translation base (203), a translation screw (2) is fixed to the driving end of the servo motor (202), the translation screw (2) is arranged in the middle of the inner cavity of the translation base (203), half of the translation screw (2) is a left-handed thread and the other half is a right-handed thread, and the translation screw (2) is threadedly engaged with and penetrates the middle position of the bottom of the two translation slides (201).

4. The aircraft traction auxiliary device according to claim 1, characterized in that: A baffle stepper motor (304) is arranged at the middle of the upper end of the main bearing plate (302), a screw rod is fixed to the driving end of the baffle stepper motor (304), the screw rod is threadedly screwed through the bottom of the front baffle plate (303), the bottom of the front baffle plate (303) is slidably connected to the main bearing plate (302), and a pressure sensor (803) is arranged on the main bearing plate (302).

5. The aircraft traction auxiliary device according to claim 1, characterized in that: The automatic control platform comprises a human-machine interaction interface (14), a first displacement sensor (801), a second displacement sensor (802), a pressure sensor (803), a controller, a lifting stepping motor (101), a servo motor (202), a baffle stepping motor (304), a first electric push rod (501), and a second electric push rod (601).

6. The aircraft traction auxiliary device according to claim 2, characterized in that: A handle mounting seat (901) is provided at one end of the upper part of the base (13) close to the lifting screw (1), and a traction rod (9) is movably hinged at the upper end of the handle mounting seat (901).

7. The method for using the aircraft traction auxiliary device according to claim 6, characterized in that: The steps include: S1, the maintenance staff connects the traction rod (9) of the aircraft traction auxiliary device to the rear of a light power device such as a small vehicle, or manually pulls it to the work area to carry out the next step of the lifting process; S2, turning on the servo motor (202), so that the two translation slides (201) drive the respective lifting plate frames (103) and the main bearing plates (302) to separate to the two sides, and the separation distance of the two main bearing plates (302) needs to be greater than the maximum width between the outer sides of the two wheels, so that the maintenance personnel can push the aircraft traction auxiliary device to make the auxiliary lifting platform enter directly under the wheel axle; S3, the wheel axle lifting surface (602) on the upper end of the auxiliary lifting platform is aligned with the axle of the wheel (7), and the second electric push rod (601) of the auxiliary lifting platform is controlled to move to lift the scissor frame (6), so that the wheel axle lifting surface (602) moves vertically upward until it contacts the wheel axle, and continues to lift vertically upward, so that the wheel is off the ground and raised to a height exceeding the lowest height of the main bearing plate (302) of the main lifting platform and then maintained; S4, by controlling the servo motor (202), the two translation slides (201) and the lifting plate frame (103) and the main load-bearing plate (302) fixed thereon move in the direction of the wheels, until the main load-bearing plate (302) moves to the position directly below the wheels on both sides, and the translation slides (201) stop moving and remain in this position; S5, simultaneously starting the first electric push rod (501) and the lifting stepper motors (101) of the two main lifting platforms, so that the main bearing plate (302) is lifted until it contacts the bottom of the wheel, and then the lifting is stopped and the height is maintained; starting the baffle stepper motor (304), so that the front baffle (303) moves toward the wheel under the action of the lead screw until the front and rear baffles fix the wheel, and the pin is automatically or manually inserted into the wheel, and the lifting is continued until the lifting load of the two wheels reaches a specified value, and then the lifting is stopped, or the wheel is lifted to a specified height as required; S6. After completing the automatic wheel lifting operation, wait for the maintenance personnel to further operate the aircraft through the aircraft traction auxiliary device.

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