Backward traction method and backward traction equipment for large transport plane

Abstract

The invention discloses a backward traction method and backward traction equipment for a large transport plane. The backward traction equipment comprises two tractors, an emergency traction steel cable, a traction rod and a computer. The computer is used for optimizing the overall weight of the airplane according to the current overall weight of the airplane and the traction force level which the traction equipment can reach, so that the overall weight of the airplane meets the traction requirement of the traction equipment; the two tractors are connected with main undercarriages on the two sides of the aircraft through emergency traction steel cables respectively, and the traction rod is connected with a nose undercarriage of the aircraft; a worker executing backward traction work on the airplane adopts backward traction equipment to pull the airplane to run to a normal runway position of an airport according to the backward traction method of the large transport plane provided by the invention; wherein in the process that the aircraft is dragged to run to the normal runway position of the airport, the aircraft is dragged through the two tractors, and the advancing direction of the aircraft is adjusted by adjusting the angle of the traction rod. According to the technical scheme provided by the invention, the problem that the large transport plane cannot be dragged to a normal plane runway in an existing plane traction mode due to the fact that plane wheels are caught in ground soil when the large transport plane rushes out of the runway accidentally is solved.

Description

Technical Field

[0001] The present invention relates to the field of but not limited to aircraft integrated support technology, and in particular to a backward traction method and backward traction equipment for a large transport aircraft. Background Art

[0002] Large transport aircraft generally refer to transport aircraft with a take-off weight of more than 100 tons. In the long-term use of large transport aircraft, it is inevitable that the aircraft will accidentally run off the runway due to mechanical failure, human factors and external emergencies. After the aircraft runs off the runway, due to the heavy weight of the aircraft and the insufficient strength of the ground soil, the aircraft wheels may sink into the ground soil.

[0003] When an aircraft runs off the runway, the traction equipment cannot be used on the soil that is not hard enough, and the required traction force is greatly increased compared to the normal runway. Therefore, the original normal aircraft traction method cannot tow the aircraft to the normal runway. Summary of the invention

[0004] Purpose of the present invention: In order to solve the above-mentioned technical problems, the embodiments of the present invention provide a backward towing method and backward towing equipment for a large transport aircraft, so as to solve the problem that the large transport aircraft accidentally runs off the runway and the existing aircraft towing method cannot tow the large transport aircraft to a normal aircraft runway because the wheels are sunk into the ground soil.

[0005] Technical solution of the present invention: In a first aspect, an embodiment of the present invention provides a backward traction method for a large transport aircraft, comprising:

[0006] S101, determining whether the weight of the entire aircraft meets the requirements for the use of the towing equipment; if so, executing S103; if not, executing S102;

[0007] S102. Take corresponding measures to reduce the overall weight of the aircraft according to the actual situation of the weight sources on board;

[0008] S103, determining whether the landing gear and tires of the aircraft are stuck in the pavement outside the runway; if so, executing S104; if not, executing S105;

[0009] S104. Take measures to pave the pavement on the aircraft traction route according to the actual situation of the landing gear and tires sinking into the ground;

[0010] S105. Use emergency towing cables to connect the two towing vehicles to the main landing gears on both sides of the aircraft;

[0011] S106, connecting the towing rod to the front landing gear of the aircraft;

[0012] S107, determining whether human power can drive the traction rod to deflect; if it is determined that it can be driven, executing S109, if it is determined that it cannot be driven, executing S108;

[0013] S108. Add a directional tractor to connect to the traction rod of the front landing gear;

[0014] S109, driving two tractors connected to the main landing gears on both sides to tow the aircraft to a predetermined position. During the towing process, the angle of the towing rod is adjusted by manpower or the steering tractor to adjust the direction of travel of the aircraft.

[0015] Optionally, in the backward traction method of a large transport aircraft as described above, S101 includes:

[0016] S11, calculating the current aircraft weight M according to the empty weight obtained by weighing the aircraft at the factory, the remaining fuel amount on board, and the weight of the loaded cargo;

[0017] S12, according to a general traction force calculation method, using the total weight M of the aircraft to calculate the traction force value range (f1, f2) required for towing the aircraft;

[0018] S13, judging whether the traction equipment used for backward traction meets the traction requirement according to the calculated traction force (f1, f2) required for traction of the aircraft; if not, proceeding to S102; if yes, proceeding to S103.

[0019] Optionally, in the above-mentioned backward towing method of a large transport aircraft, the corresponding measures taken in S102 to reduce the weight of the entire aircraft include at least one of the following:

[0020] 1) Unloading cargo from the aircraft;

[0021] 2) Release the fuel from the aircraft;

[0022] 3) Dismantle some of the onboard equipment on the aircraft; the removable onboard equipment includes: the onboard equipment that does not affect the aircraft towing work after dismantling.

[0023] Optionally, in the above-mentioned backward towing method for a large transport aircraft, according to the actual situation on site, the specific measures for laying the upper pavement of the aircraft towing route in S104 include at least one of the following:

[0024] 1) Use sand and gravel to fill the moist soil;

[0025] 2) Use vehicles or road rollers to compact the road surface on the traction line;

[0026] 3) For the road surface under and around the aircraft that cannot be compacted by vehicles or rollers, the hardness of the road surface is strengthened by laying steel plates on the gravel.

[0027] Optionally, in the backward traction method of a large transport aircraft as described above, S108 includes:

[0028] According to the on-site conditions around the road where the aircraft is located, the road on the driving route of the traction equipment in front of the aircraft is paved using the road paving method in step S104, so that the tractor can drive to the front of the aircraft and connect the tractor to the traction rod.

[0029] Optionally, in the backward traction method of a large transport aircraft as described above, S109 includes:

[0030] S91, a dedicated person is in charge of the towing aircraft, with an operator who is competent for wheel brakes in the cockpit, a security guard under the left and right wing tips and beside the front landing gear, and a security guard at the tail. The commander maintains contact with the security guard, cockpit operator and towing vehicle driver;

[0031] S92: During the towing process, the two towing vehicles connected to the emergency towing cable start synchronously and tow the aircraft at a constant speed to avoid obvious deviation in the speed or position of the two towing vehicles.

[0032] S93, use the towing rod to control the direction of the aircraft. If the front landing gear wheel deflects during towing, stop towing the aircraft, use manpower or a steering towing vehicle to drive the towing rod to adjust the angle so that the front landing gear wheel of the aircraft is straightened, and then continue to tow the aircraft;

[0033] S94, during the traction process, the traction speed shall not exceed 5km / h, and the traction process shall be slow and steady;

[0034] S95, tow the aircraft to the normal airport runway position.

[0035] Optionally, in the above-mentioned backward towing method for a large transport aircraft, in the process of towing the aircraft to move to a normal airport runway position in S95,

[0036] If an unexpected situation occurs, the towing work will be stopped immediately. The handling method is as follows: the drivers of the two towing vehicles will apply brakes to release the force of the emergency towing cable, and the aircraft will slowly stop under the action of ground friction. In an emergency, after the emergency towing cable releases the force, the cockpit operator will immediately apply the aircraft brakes.

[0037] After stopping the traction work under the accident, analyze the cause and take corresponding measures, and then restart the traction work. During the traction work, if the emergency traction steel cable breaks due to insufficient strength, replace the emergency traction steel cable with a stronger strength; if the traction force of the tractors on both sides is insufficient, replace the tractors with greater traction force.

[0038] In a second aspect, an embodiment of the present invention further provides a rearward traction device for a large transport aircraft, comprising: two traction vehicles, an emergency traction steel cable, a traction rod, and a computer;

[0039] The computer is used to optimize the whole weight of the aircraft according to the current whole weight of the aircraft and the traction force level that can be achieved by the traction equipment, so that the whole weight of the aircraft meets the traction requirements of the traction equipment;

[0040] The two tractors are connected to the main landing gears on both sides of the aircraft through emergency traction cables, and the traction rod is connected to the front landing gear of the aircraft;

[0041] The staff who perform the backward towing work on the aircraft use the backward towing equipment according to the backward towing method of a large transport aircraft as described in any one of the above to tow the aircraft to the normal runway position of the airport; wherein, in the process of towing the aircraft to the normal runway position of the airport, the aircraft is towed by two towing vehicles, and the direction of the aircraft is adjusted by adjusting the angle of the towing rod.

[0042] Optionally, the rearward traction device of the large transport aircraft as described above further comprises: a directional traction vehicle connected to the traction rod;

[0043] The direction tractor is used to drive the traction rod to deflect when human power cannot drive the traction rod to deflect, so as to adjust the traveling direction of the aircraft.

[0044] Optionally, the rearward traction equipment of the large transporter as described above further includes at least one of the following: sand and gravel, road roller, steel plate;

[0045] It is used to optimize the pavement strength on the route of aircraft and traction equipment according to the actual soil conditions of the road where the aircraft is stuck, through at least one of gravel filling, compacting the road surface with rollers, and laying steel plates, so that the pavement strength meets the driving requirements of the aircraft and traction equipment.

[0046] Beneficial effects of the present invention: In order to solve the problem of towing a large transport aircraft to an airport runway after it accidentally runs off the runway, an embodiment of the present invention provides a backward towing method and backward towing equipment for a large transport aircraft. In the embodiment of the present invention, a specific towing process is planned, and appropriate support equipment is selected to design a reasonable backward towing method and backward towing equipment for a large transport aircraft, thereby solving the problem of backward emergency towing of a large transport aircraft. The backward towing method is performed on a large transport aircraft using the backward towing equipment provided by the embodiment of the present invention, so that a large transport aircraft that accidentally runs off the runway can be safely and efficiently towed to a predetermined position, which can minimize damage to the aircraft and economic losses, and has a high engineering application value. BRIEF DESCRIPTION OF THE DRAWINGS

[0047] The accompanying drawings are used to provide a further understanding of the technical solution of the present invention and constitute a part of the specification. Together with the embodiments of the present application, they are used to explain the technical solution of the present invention and do not constitute a limitation on the technical solution of the present invention.

[0048] Figure 1 A schematic flow chart of a backward traction method for a large transport aircraft provided in an embodiment of the present invention;

[0049] Figure 2 A schematic diagram of a traction mode of a backward traction method for a large transport aircraft provided by an embodiment of the present invention;

[0050] Figure 3 for Figure 2 The illustrated embodiment provides a schematic diagram of the connection between the emergency traction cable and the main landing gear in the traction mode;

[0051] Figure 4 for Figure 2 The illustrated embodiment provides a schematic diagram of the connection between the towing bar and the front landing gear in the towing mode. DETAILED DESCRIPTION

[0052] In order to make the purpose, technical solution and advantages of the present invention more clear, the embodiments of the present invention will be described in detail with reference to the accompanying drawings. It should be noted that the embodiments and features in the embodiments of the present application can be combined with each other arbitrarily without conflict.

[0053] In view of the towing problem in the case where the aircraft runs off the runway as mentioned in the background technology, it is necessary to plan a reasonable backward towing operation process and corresponding towing equipment for emergency situations, so as to tow the aircraft to the parking space or hangar in the shortest time and at a lower economic cost so as to carry out subsequent maintenance work.

[0054] The embodiment of the present invention proposes a backward towing method and backward towing equipment for a large transport aircraft. By scientifically and reasonably designing the backward towing method of a large transport aircraft in an emergency situation, an economical and reasonable implementation plan is provided to achieve the purpose of reducing aircraft damage, reducing economic costs and improving towing efficiency.

[0055] The present invention provides the following specific embodiments which can be combined with each other. The same or similar concepts or processes may not be described in detail in some embodiments.

[0056] Example 1

[0057] Figure 1 A schematic flow chart of a backward traction method for a large transport aircraft provided by an embodiment of the present invention. The backward traction method for a large transport aircraft provided by an embodiment of the present invention comprises the following steps:.

[0058] Step 1, S101, determine whether the weight of the entire aircraft meets the requirements for the use of the towing equipment; if yes, execute S103, if not, execute S102;

[0059] S102. Take corresponding measures to reduce the overall weight of the aircraft according to the actual situation of the weight sources on board;

[0060] S103, determining whether the landing gear and tires of the aircraft are stuck in the pavement outside the runway; if so, executing S104; if not, executing S105;

[0061] S104. Take measures to pave the pavement on the aircraft traction route according to the actual situation of the landing gear and tires sinking into the ground;

[0062] S105. Use emergency towing cables to connect the two towing vehicles to the main landing gears on both sides of the aircraft;

[0063] S106, connecting the towing rod to the front landing gear of the aircraft;

[0064] S107, determining whether human power can drive the traction rod to deflect; if it is determined that it can be driven, executing S109, if it is determined that it cannot be driven, executing S108;

[0065] S108. Add a directional tractor to connect to the traction rod of the front landing gear;

[0066] S109, driving two tractors connected to the main landing gears on both sides to tow the aircraft to a predetermined position. During the towing process, the angle of the towing rod is adjusted by manpower or the steering tractor to adjust the direction of travel of the aircraft.

[0067] In an implementation of the embodiment of the present invention, determining whether the weight of the aircraft meets the use requirements of the towing equipment in the above S101 may specifically include:

[0068] S11, calculating the current aircraft weight M according to the empty weight obtained by weighing the aircraft at the factory, the remaining fuel amount on board, and the weight of the loaded cargo;

[0069] S12, according to a general traction force calculation method, using the total weight M of the aircraft to calculate the traction force value range (f1, f2) required for towing the aircraft;

[0070] S13, judging whether the traction equipment used for backward traction meets the traction requirement according to the calculated traction force (f1, f2) required for traction of the aircraft; if not, proceeding to S102; if yes, proceeding to S103.

[0071] In an implementation of the embodiment of the present invention, the measures taken in S102 to reduce the weight of the entire aircraft may include but are not limited to the following:

[0072] 1) Unloading cargo from the aircraft;

[0073] 2) Release the fuel from the aircraft;

[0074] 3) Dismantle some of the onboard equipment on the aircraft; the removable onboard equipment includes: the onboard equipment that does not affect the aircraft towing work after dismantling.

[0075] In an implementation of the embodiment of the present invention, the specific method of determining whether the landing gear and tires of the aircraft are stuck in the ground outside the runway in the above S103 may include:

[0076] Observe visually or by measurement whether the wheels and tires of the main landing gear and front landing gear on both sides of the aircraft are sunk into the pavement soil. If so, it indicates that the current pavement soil strength cannot support the aircraft and traction equipment to travel on the pavement, and measures need to be taken to pave the pavement, and go to S104. If not, the traction equipment can be used directly to tow the aircraft on the pavement, and go to S105.

[0077] In an implementation of the embodiment of the present invention, the specific measures for laying the pavement on the aircraft traction line in the above S104 may include but are not limited to the following methods:

[0078] 1) Use sand and gravel to fill the relatively moist soil;

[0079] 2) Use vehicles or road rollers to compact the road surface on the traction line;

[0080] 3) For the pavement under and around the aircraft that cannot be compacted by equipment, the pavement hardness is strengthened by laying steel plates on the sand and gravel.

[0081] In an implementation of the embodiment of the present invention, the above-mentioned S105 uses a traction cable to connect the two tractors to the main landing gear of the aircraft, which may specifically include:

[0082] Connect two emergency traction cables to the corresponding positions of the two main landing gears, and use two tractors to connect the other ends of the two emergency traction cables. Figure 2 and Figure 3 As shown, Figure 2 A schematic diagram of a traction mode of a backward traction method for a large transport aircraft provided by an embodiment of the present invention, Figure 3 for Figure 2 The illustrated embodiment provides a schematic diagram of the connection between the emergency traction cable and the main landing gear in the traction mode.

[0083] In an implementation of the embodiment of the present invention, the structure of connecting the towing rod and the front landing gear of the aircraft in the above S106 may be:

[0084] Use the towing rod provided with the aircraft to connect the towing rod to the towing connector of the front landing gear; Figure 4 As shown, Figure 2 The illustrated embodiment provides a schematic diagram of the connection between the towing bar and the front landing gear in the towing mode.

[0085] In an implementation of the embodiment of the present invention, determining whether human power can drive the traction rod to deflect in the above S107 may specifically include:

[0086] When the aircraft is stationary, according to the limitation of the operating space of the traction rod, use as much manpower as possible within the space limitation to drive the traction rod to deflect to the left and right sides of the aircraft, and judge whether the traction rod can be driven to deflect by manpower. If it cannot be driven, go to S108, if it can be driven, go to S109.

[0087] In an implementation of the embodiment of the present invention, the use of the directional tractor to connect with the front landing gear traction rod in S108 may specifically include:

[0088] According to the on-site conditions around the road where the aircraft is located, the road on the driving route of the traction equipment in front of the aircraft is paved using the road paving method in step S104, so that the tractor can drive to the front of the aircraft and connect the tractor to the traction rod.

[0089] In an implementation of the embodiment of the present invention, the driving of the tractor to tow the aircraft to a predetermined position in S109 may specifically include but is not limited to the following measures:

[0090] 1) A dedicated person shall command the towing aircraft. There must be an operator who is competent for wheel brakes in the cockpit. There must be a warning person accompanying under the left and right wing tips and beside the front landing gear. There should also be a warning person accompanying at the tail. The commander shall maintain good communication with the warning person, cockpit operator and towing vehicle driver;

[0091] 2) During the towing process, the two towing vehicles connected to the emergency towing cable should start synchronously and tow the aircraft at a constant speed as much as possible to avoid obvious deviation in the speed or position of the two towing vehicles;

[0092] 3) Use the towing rod to control the direction. If the front landing gear wheels deflect during towing, stop towing the aircraft, use manpower or a towing vehicle to drive the towing rod to straighten the front landing gear wheels, and then continue to tow the aircraft;

[0093] 4) During the traction process, the traction speed shall not exceed 5km / h, and the traction process shall be slow and steady;

[0094] 5) Tow the aircraft to the normal airport runway position.

[0095] 6) If an unexpected situation occurs during the towing process, the drivers of the two towing vehicles should take braking measures to unload the emergency towing cable and the aircraft will slowly stop under the action of ground friction. In an emergency, after the emergency towing cable is unloaded, the aircraft cockpit operator should immediately apply the aircraft brakes; in the event of an accident, the towing work should be stopped immediately, and the cause should be analyzed and effective measures taken before restarting the towing work.

[0096] Example 2

[0097] Based on the backward traction method of a large transport aircraft provided by the above embodiment of the present invention, the embodiment of the present invention further provides a backward traction device for a large transport aircraft, the backward traction device comprising: two traction vehicles, an emergency traction steel cable, a traction rod, and a computer;

[0098] The computer is used to optimize the whole weight of the aircraft according to the current whole weight of the aircraft and the traction force level that can be achieved by the traction equipment, so that the whole weight of the aircraft meets the traction requirements of the traction equipment;

[0099] The two tractors are connected to the main landing gears on both sides of the aircraft through emergency traction cables, and the traction rod is connected to the front landing gear of the aircraft;

[0100] The staff who perform the backward towing work on the aircraft uses the backward towing equipment according to the backward towing method for a large transport aircraft provided in any of the above-mentioned embodiments to tow the aircraft to the normal runway position of the airport; wherein, in the process of towing the aircraft to the normal runway position of the airport, the aircraft is towed by two towing vehicles, and the direction of travel of the aircraft is adjusted by adjusting the angle of the towing rod.

[0101] In an implementation of the embodiment of the present invention, the rearward traction equipment of the large transport aircraft may further include: a directional traction vehicle connected to the traction rod.

[0102] The direction tractor in this implementation is used to drive the traction rod to deflect when human power cannot drive the traction rod to deflect, so as to adjust the direction of travel of the aircraft.

[0103] In an implementation of the embodiment of the present invention, the rearward traction equipment of the large transport aircraft may further include at least one of the following: sand and gravel, road roller equipment, and steel plate;

[0104] It is used to optimize the pavement strength on the route of aircraft and traction equipment according to the actual soil conditions of the road where the aircraft is stuck, through at least one of gravel filling, compacting the road surface with rollers, and laying steel plates, so that the pavement strength meets the driving requirements of the aircraft and traction equipment.

[0105] In order to solve the problem of emergency backward towing of a large transport aircraft with a total takeoff weight of more than 100 tons to a predetermined position after it accidentally runs off the runway, an embodiment of the present invention provides a backward towing method and backward towing equipment for a large transport aircraft. In the embodiment of the present invention, a specific towing process is planned, and appropriate support equipment is selected to design a reasonable backward towing method and backward towing equipment for a large transport aircraft, thereby solving the problem of emergency backward towing of a large transport aircraft. The backward towing method performed on a large transport aircraft using the backward towing equipment provided by the embodiment of the present invention can safely and efficiently achieve the towing of a large transport aircraft that accidentally runs off the runway to a predetermined position, which can minimize damage to the aircraft and economic losses, and has high engineering application value.

[0106] Although the embodiments disclosed in the present invention are as above, the contents are only embodiments adopted to facilitate understanding of the present invention and are not intended to limit the present invention. Any technician in the field to which the present invention belongs can make any modifications and changes in the form and details of implementation without departing from the spirit and scope disclosed in the present invention, but the patent protection scope of the present invention shall still be subject to the scope defined in the attached claims.

Claims

1. A backward towing method for a large transport aircraft, characterized in that: include: S101, determining whether the weight of the entire aircraft meets the requirements for the use of the towing equipment; if so, executing S103; if not, executing S102; S102. Take corresponding measures to reduce the overall weight of the aircraft according to the actual situation of the weight sources on board; S103, determining whether the landing gear and tires of the aircraft are stuck in the pavement outside the runway; If the error is detected, S104 is executed; if the error is not detected, S105 is executed; S104. Take measures to pave the pavement on the aircraft traction route according to the actual situation of the landing gear and tires sinking into the ground; S105. Use emergency towing cables to connect the two towing vehicles to the main landing gears on both sides of the aircraft; S106, connecting the towing rod to the front landing gear of the aircraft; S107, determining whether human power can drive the traction rod to deflect; If it is determined that it can be driven, then S109 is executed; if it is determined that it cannot be driven, then S108 is executed; S108. Add a directional tractor to connect to the traction rod of the front landing gear; S109, driving two tractors connected to the main landing gears on both sides to tow the aircraft to a predetermined position. During the towing process, the angle of the towing rod is adjusted by manpower or the steering tractor to adjust the direction of travel of the aircraft.

2. The backward traction method of a large transport aircraft according to claim 1, characterized in that: The S101 includes: S11, calculating the current aircraft weight M according to the empty weight obtained by weighing the aircraft at the factory, the remaining fuel amount on board, and the weight of the loaded cargo; S12, according to a general traction force calculation method, using the total weight M of the aircraft to calculate the traction force value range (f1, f2) required for towing the aircraft; S13, judging whether the traction equipment used for backward traction meets the traction requirement according to the calculated traction force (f1, f2) required for traction of the aircraft; if not, proceeding to S102; if yes, proceeding to S103.

3. The backward traction method of a large transport aircraft according to claim 1, characterized in that: The corresponding measures taken in S102 to reduce the weight of the entire aircraft include at least one of the following: 1) Unloading cargo from the aircraft; 2) Release the fuel from the aircraft; 3) Dismantle some of the onboard equipment on the aircraft; the removable onboard equipment includes: the onboard equipment that does not affect the aircraft towing work after dismantling.

4. The backward traction method of a large transport aircraft according to claim 1, characterized in that: According to the actual situation on site, the specific measures for laying the upper pavement of the aircraft traction line in S104 include at least one of the following: 1) Use sand and gravel to fill the moist soil; 2) Use vehicles or road rollers to compact the road surface on the traction line; 3) For the road surface under and around the aircraft that cannot be compacted by vehicles or rollers, the hardness of the road surface is strengthened by laying steel plates on the gravel.

5. The backward towing method of a large transport aircraft according to claim 4, characterized in that: The S108 includes: According to the on-site conditions around the road where the aircraft is located, the road on the driving route of the traction equipment in front of the aircraft is paved using the road paving method in step S104, so that the tractor can drive to the front of the aircraft and connect the tractor to the traction rod.

6. The backward towing method of a large transport aircraft according to any one of claims 1 to 5, characterized in that: The S109 includes: S91, a dedicated person is in charge of the towing aircraft, with an operator who is competent for wheel brakes in the cockpit, a security guard under the left and right wing tips and beside the front landing gear, and a security guard at the tail. The commander maintains contact with the security guard, cockpit operator and towing vehicle driver; S92: During the towing process, the two towing vehicles connected to the emergency towing cable start synchronously and tow the aircraft at a constant speed to avoid obvious deviation in the speed or position of the two towing vehicles. S93, use the towing rod to control the direction of the aircraft. If the front landing gear wheel deflects during towing, stop towing the aircraft, use manpower or a steering towing vehicle to drive the towing rod to adjust the angle so that the front landing gear wheel of the aircraft is straightened, and then continue to tow the aircraft; S94, during the traction process, the traction speed shall not exceed 5km / h, and the traction process shall be slow and steady; S95, tow the aircraft to the normal airport runway position.

7. The backward towing method of a large transport aircraft according to claim 6, characterized in that: In the process of moving the towing aircraft to the normal airport runway position in S95, If an unexpected situation occurs, the towing work will be stopped immediately. The handling method is as follows: the drivers of the two towing vehicles will apply brakes to release the force of the emergency towing cable, and the aircraft will slowly stop under the action of ground friction. In an emergency, after the emergency towing cable releases the force, the cockpit operator will immediately apply the aircraft brakes. After stopping the traction work in an unexpected situation, analyzing the cause and taking corresponding measures, the traction work is restarted.

8. A rearward traction device for a large transport aircraft, characterized in that: include: two towing vehicles, emergency towing cables, tow bars, and computers; The computer is used to optimize the whole weight of the aircraft according to the current whole weight of the aircraft and the traction force level that can be achieved by the traction equipment, so that the whole weight of the aircraft meets the traction requirements of the traction equipment; The two tractors are connected to the main landing gears on both sides of the aircraft through emergency traction cables, and the traction rod is connected to the front landing gear of the aircraft; The staff who perform the backward towing work on the aircraft uses the backward towing equipment according to the backward towing method of the large transport aircraft as described in any one of claims 1 to 7 to tow the aircraft to the normal runway position of the airport; wherein, in the process of towing the aircraft to the normal runway position of the airport, the aircraft is towed by two towing vehicles, and the direction of travel of the aircraft is adjusted by adjusting the angle of the towing rod.

9. The rearward traction device for a large transport aircraft according to claim 8, characterized in that: Also includes: A directional tractor connected to the drawbar; The direction tractor is used to drive the traction rod to deflect when human power cannot drive the traction rod to deflect, so as to adjust the traveling direction of the aircraft.

10. The rearward traction device for a large transport aircraft according to claim 8, characterized in that: Also includes at least one of the following: sand, gravel, road rollers, steel plates; It is used to optimize the pavement strength on the route of aircraft and traction equipment according to the actual soil conditions of the road where the aircraft is stuck, through at least one of gravel filling, compacting the road surface with rollers, and laying steel plates, so that the pavement strength meets the driving requirements of the aircraft and traction equipment.

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