Novel lightweight airplane traction device

Abstract

The utility model discloses a novel lightweight airplane traction device which comprises a traction joint, the traction joint is fixedly connected with a first end of a traction main rod through a first flange plate and a bolt, a second end of the traction main rod is fixedly connected with a traction ring assembly through a second flange plate and a bolt, and a rod body of the traction main rod is provided with a walking device. According to the utility model, the whole body is detachable, the whole weight is reduced, the strength is enhanced, and the airplane traction equipment is more convenient to install or dismantle by workers. The traction rod is provided with a walking device, and the height of the traction connector and the traction ring assembly can be increased or decreased at any time. The traction connector is provided with a replaceable groove piece, front wheel undercarriage connecting shafts with different diameters can be achieved, and the universality of traction equipment is improved. The traction joint simulates and calculates the motion condition under the specified traction force in the design process, and when the tension of the tractor exceeds the load of the connecting shaft of the front wheel undercarriage, an operator is reminded in time through the breakage of the shear pin, so as to prevent further damage to fly-up and main-up.

Description

Technical Field

[0001] The utility model relates to the technical field of aircraft tractors, in particular to a novel lightweight aircraft tractor. Background Art

[0002] The existing rod towing equipment in my country is dedicated to special aircraft. The length of the towing rod is fixed, the overall weight is large, the operability is poor, and it is not convenient to adjust the height of the towing rod and the towing ring. In addition, the main material of the towing rod is carbon steel, which is time-consuming and laborious for workers to install and remove the towing rod. When carrying out rod towing, an important issue needs to be considered, that is, if the front landing gear of the aircraft cannot withstand the pulling force of the towing vehicle, the pulling force can only act on the main landing gear of the aircraft. If it is not discovered in time, it will inevitably damage the main landing gear of the aircraft, resulting in huge losses. Utility Model Content

[0003] In order to solve the technical problems mentioned in the background technology, the utility model provides a novel lightweight aircraft traction device.

[0004] The utility model provides the following technical solutions: a novel lightweight aircraft traction device, comprising a traction joint connected to a connecting shaft on a front landing gear of an aircraft; the traction joint is made of titanium alloy; the traction joint is fixedly connected to a first end of a traction main rod through a first flange and bolts; the traction main rod is made of carbon fiber material; the second end of the traction main rod is fixedly connected to a traction ring assembly through a second flange and bolts; the traction ring assembly is used to connect a tractor, which provides power to tow the aircraft to move; a walking device is arranged on the rod body of the traction main rod, which is used to raise or lower the height of the traction joint and the traction ring assembly.

[0005] Furthermore, the traction joint includes a joint body; the upper and lower surfaces of the joint body are connected to one end of the traction joint cover plate by a bolt assembly; the other end of the traction joint cover plate is fixed to the end of the first flange plate; one end of the traction connecting shaft of the joint body is provided with a first groove member that is adapted to the outer periphery of the connecting shaft; and a movable baffle assembly for closing the first groove member is provided on the joint body.

[0006] Furthermore, the bolt assembly includes a positioning pin for fixing the connection between the traction joint cover plate and the joint body, and a shear pin symmetrically arranged on both sides of the positioning pin for detecting whether the traction vehicle power exceeds the connection shaft load.

[0007] Furthermore, the movable baffle assembly includes a support frame, a control handle, a movable baffle and a handle limit pin; a horizontal slide groove is arranged in the middle of the support frame; the movable baffle is installed in the horizontal slide groove; the middle part of the control handle is movably connected to the support frame through a rotating shaft; the end of the control handle is movably connected to the end of the movable baffle; when the control handle is lifted or pressed down, the movable baffle moves back and forth in the horizontal slide groove to close or open the first groove body; a handle limit pin hole is arranged at one end of the support frame close to the control handle; the handle limit pin is passed through the handle limit pin hole to limit the control handle from sliding downward after being lifted.

[0008] Furthermore, a second groove member for adapting to connecting shafts of different sizes is also provided on the traction joint; the left and right sides of the second groove member are movably connected to the two ends of the support frame through adjustment arms and are located above the first groove member; the second groove member can fall completely into the first groove member.

[0009] Furthermore, a clamp assembly is also provided on the traction main rod; the clamp assembly includes a clamp clamp ring connected to the traction main rod; and a clamp handle for hand-holding is provided on the clamp clamp ring.

[0010] Furthermore, the walking device includes a walking bracket and a worm gear mechanism; the bottom end of the worm gear mechanism is connected to the traction main rod; the top end of the worm gear mechanism is connected to the walking bracket; and a pulley is installed at the bottom of the walking bracket.

[0011] Furthermore, the worm gear mechanism comprises a telescopic rod body which is telescopic and hollow, and a hand crank arranged on the outside of the telescopic rod body.

[0012] Furthermore, the traction ring assembly includes a fixing plate for connecting with the second flange, a fixing platform arranged on the fixing plate, and a ring body assembled on the fixing platform; the end of the ring body is connected to a buffer assembled in the fixing platform through a connecting rod.

[0013] Furthermore, an expansion rod is connected between the traction main rod and the traction ring assembly; and both ends of the expansion rod are respectively connected to the second flange and the fixing plate through a third flange.

[0014] Compared with the prior art, the utility model designs a new lightweight aircraft traction device. The traction device is detachable as a whole. The traction rod is made of carbon fiber as a whole, and the traction joint is made of titanium alloy, which reduces the overall weight and enhances the strength. It is more convenient for workers to install or disassemble aircraft traction equipment. A walking device is installed on the traction rod, which can raise or lower the height of the traction joint and the traction ring assembly at any time. The traction rod can be connected to an expansion rod to lengthen the rod body, which is suitable for working environments that require a long traction rod. The traction joint is designed with replaceable groove parts, which can realize different diameters of the front wheel landing gear connecting shaft, thereby improving the versatility of the traction equipment. During the design process, the traction joint simulates and calculates the movement under the specified traction force. When the pulling force of the tractor exceeds the load of the front wheel landing gear connecting shaft, the shear pin breaks to promptly remind the operator to prevent further damage to the main take-off. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] Figure 1 This is a schematic diagram of the overall structure of the novel lightweight aircraft traction device of the utility model;

[0016] Figure 2 It is a schematic diagram of the overall structure of the traction joint of the utility model;

[0017] Figure 3 It is a schematic diagram of the overall structure of the walking device of the utility model;

[0018] Figure 4 It is a schematic diagram of the overall structure of the traction ring assembly of the utility model.

[0019] in:

[0020] 1-traction joint, 2-traction main rod, 3-first flange, 4-second flange, 5-traction ring assembly, 6-traveling device, 7-second groove member, 8-hoop assembly, 9-expansion rod,

[0021] 10-rotating shaft, 11-joint body, 12-traction joint cover plate, 13-first groove member, 14-positioning pin, 15-shear pin, 16-support frame, 17-control handle, 18-movable baffle, 19-handle limit pin,

[0022] 51-fixed plate, 52-fixed platform, 53-ring body,

[0023] 61-travel bracket, 62-pulley, 63-worm gear mechanism,

[0024] 81-clamp clamp, 82-clamp handle. DETAILED DESCRIPTION

[0025] In order to facilitate those skilled in the art to understand the technical solution of the utility model, further description is now made with reference to the accompanying drawings. It should be understood that these descriptions are only exemplary and are not intended to limit the scope of the utility model.

[0026] In the following detailed description, for ease of explanation, many specific details are set forth to provide a comprehensive understanding of the embodiments of the present invention. However, it is apparent that one or more embodiments may be implemented without these specific details. In addition, in the following description, descriptions of known structures and technologies are omitted to avoid unnecessary confusion of the concepts of the present invention.

[0027] like Figure 1 The figure shows the overall structure of the novel lightweight aircraft traction device of the utility model, which includes a traction joint 1 connected to the connecting shaft on the front landing gear of the aircraft. The traction joint 1 is made of titanium alloy, light in weight and stable in structure. The traction joint 1 is fixedly connected to the first end of the traction main rod 2 through a first flange 3 and bolts. The traction main rod 2 is made of carbon fiber material. The second end of the traction main rod 2 is fixedly connected to the traction ring assembly 5 through a second flange 4 and bolts. The traction ring assembly 5 is used to connect to a tractor, which provides power to tow the aircraft. The rod body of the traction main rod 2 is provided with a walking device 6, which is used to raise or lower the height of the traction joint 1 and the traction ring assembly 5.

[0028] like Figure 2 As shown, the traction joint 1 includes a joint body 11, the upper and lower surfaces of the joint body 11 are connected to one end of the traction joint cover plate 12 by a bolt assembly, the other end of the traction joint cover plate 12 is fixed to the end of the first flange 3, and one end of the traction connection shaft of the joint body 1 is provided with a first groove member 13 adapted to the outer periphery of the connection shaft, and the connection shaft is engaged in the first groove member 13. A movable baffle assembly for closing the first groove member 13 is provided on the joint body 11. In specific implementation, the bolt assembly includes a positioning pin 14 for fixing the connection between the traction joint cover plate 12 and the joint body 11, and a shear pin 15 symmetrically arranged on both sides of the positioning pin 14 for detecting whether the traction vehicle power exceeds the connection shaft load. The load of the shear pin 15 is designed to be less than the load of the connection shaft. When the pulling force of the traction vehicle exceeds the load of the front wheel landing gear connection shaft, the shear pin will automatically break, resulting in a deviation between the traction joint 1 and the traction main rod 2, which plays a role in timely reminding the operator to prevent further damage to the main lift.

[0029] In this embodiment, the movable baffle assembly includes a support frame 16, a control handle 17, a movable baffle 18 and a handle stop pin 19. A horizontal slide groove is set in the middle of the support frame 16; the movable baffle 18 is installed in the horizontal slide groove, the middle of the control handle 17 is movably connected to the support frame 16 through the rotating shaft 10, and the end of the control handle 17 is movably connected to the end of the movable baffle 18. When the connecting shaft is installed in the first groove member 13, when the control handle 17 is lifted, the movable baffle 18 moves forward and backward in the horizontal slide groove to close the first groove body 13. When pressed down, the movable baffle 18 slides outward and the first groove body 13 is opened. A handle stop pin hole is set at one end of the support frame 16 close to the control handle 17, and the handle stop pin 19 is inserted into the handle stop pin hole to limit the control handle 17 from sliding downward after being lifted, so as to prevent the connecting shaft from slipping off. The traction joint is also provided with a second groove member 7 for adapting to connecting shafts of different sizes. The left and right sides of the second groove member 7 are movably connected to the two ends of the support frame 16 through adjustment arms and are located above the first groove member 13. The second groove member 7 can fall completely into the first groove member 13.

[0030] In addition, a clamp assembly 8 is provided on the traction main rod, and the clamp assembly 8 includes a clamp ring 81 connected to the traction main rod; a clamp handle 82 for hand-holding is provided on the clamp ring 81, which is convenient for the operator to hold the traction main rod 2.

[0031] like Figure 3 As shown, in this embodiment, the walking device 6 includes a walking bracket 61 and a worm gear mechanism 63. The bottom end of the worm gear mechanism is connected to the traction main rod 2, and the top end of the worm gear mechanism is connected to the walking bracket 61. A pulley 62 is installed at the bottom of the walking bracket 61 to facilitate traction and walking. The worm gear mechanism 63 includes a telescopic rod body with a telescopic length and a hollow and a hand crank disposed on the outside of the telescopic rod body. When the hand crank is turned, the telescopic rod will slide upward or downward to raise or lower the position of the traction joint and the traction ring assembly so that it can be fixed smoothly. After installation, the pulley 62 is lifted off the ground.

[0032] like Figure 4 As shown, in this embodiment, the traction ring assembly 5 includes a fixing plate 51 for connecting with the second flange 4, a fixing platform 52 arranged on the fixing plate 51, and a ring body 53 assembled on the fixing platform 52. The end of the ring body 53 is connected to a buffer assembled in the fixing platform 52 through a connecting rod. The buffer can be a spring or a disc spring. When connected to a tractor, the spring or disc spring can play a further buffering role to prevent hard pulling.

[0033] During specific implementation, in order to facilitate the extension of the traction main rod 2, an extension rod 9 is connected between the traction main rod 2 and the traction ring assembly 5; both ends of the extension rod 9 are respectively connected to the second flange 4 and the fixing plate 51 through the third flange.

[0034] In summary, the utility model designs a new type of lightweight aircraft traction device, the traction device is detachable as a whole, the traction rod is made of carbon fiber material as a whole, and the traction joint is made of titanium alloy material, so that the overall weight is reduced and the strength is enhanced, which makes it more convenient for workers to install or disassemble aircraft traction equipment. A walking device is installed on the traction rod, which can raise or lower the height of the traction joint and the traction ring assembly at any time. The traction rod can be connected to an expansion rod to lengthen the rod body, which is suitable for working environments that require a long traction rod. The traction joint is designed with replaceable groove parts, which can realize different diameters of the front wheel landing gear connecting shaft, thereby improving the versatility of the traction equipment. During the design process, the traction joint simulates and calculates the movement under the specified traction force. When the pulling force of the tractor exceeds the load of the front wheel landing gear connecting shaft, the shear pin breaks to promptly remind the operator to prevent further damage to the main take-off.

[0035] The above embodiments are merely descriptions of the preferred implementation modes of the present invention, and are not intended to limit the scope of the present invention. Without departing from the design spirit of the present invention, various modifications and improvements made to the technical solutions of the present invention by ordinary technicians in this field should fall within the protection scope determined by the claims of the present invention.

Claims

1. A novel lightweight aircraft traction device, characterized in that: The invention comprises a traction joint (1) connected to a connecting shaft on a front landing gear of an aircraft; the traction joint (1) is made of titanium alloy; the traction joint (1) is fixedly connected to a first end of a traction main rod (2) via a first flange (3) and bolts; the traction main rod (2) is made of carbon fiber material; the second end of the traction main rod (2) is fixedly connected to a traction ring assembly (5) via a second flange (4) and bolts; the traction ring assembly (5) is used to connect to a tractor, which provides power to tow the aircraft; the rod body of the traction main rod (2) is provided with a walking device (6) for raising or lowering the height of the traction joint (1) and the traction ring assembly (5).

2. The novel lightweight aircraft traction device according to claim 1 is characterized in that: The traction joint (1) comprises a joint body (11); the upper and lower surfaces of the joint body (11) are connected to one end of a traction joint cover plate (12) by means of a bolt assembly; the other end of the traction joint cover plate (12) is fixed to the end of a first flange (3); a first groove member (13) adapted to the outer circumference of the connection shaft is provided at one end of the traction connection shaft of the joint body (11); and a movable baffle assembly for closing the first groove member (13) is provided on the joint body (11).

3. The novel lightweight aircraft traction device according to claim 2 is characterized in that: The bolt assembly comprises a positioning pin (14) for fixing and connecting a traction joint cover plate (12) and a joint body (11), and a shear pin (15) symmetrically arranged on both sides of the positioning pin (14) for detecting whether the power of the traction vehicle exceeds the load of the connecting shaft.

4. The novel lightweight aircraft traction device according to claim 3 is characterized in that: The movable baffle assembly comprises a support frame (16), a control handle (17), a movable baffle (18) and a handle limit pin (19); a horizontal slide groove is arranged in the middle of the support frame (16); the movable baffle (18) is installed in the horizontal slide groove; the middle part of the control handle (17) is movably connected to the support frame (16) through a rotating shaft (10); the end of the control handle (17) is movably connected to the end of the movable baffle (18); when the control handle (17) is lifted up or pressed down, the movable baffle (18) moves forward and backward in the horizontal slide groove to close or open the first groove member (13); a handle limit pin hole is arranged at one end of the support frame (16) close to the control handle (17); the handle limit pin (19) is inserted into the handle limit pin hole to limit the control handle (17) from sliding downward after being lifted up.

5. The novel lightweight aircraft traction device according to claim 4 is characterized in that: The traction joint is also provided with a second groove member (7) for adapting to connecting shafts of different sizes; the left and right sides of the second groove member (7) are movably connected to the two ends of the support frame (16) through adjustment arms and are located above the first groove member (13); the second groove member (7) can completely fall into the first groove member (13).

6. The novel lightweight aircraft traction device according to claim 5 is characterized in that: A hoop assembly (8) is also provided on the traction main rod; the hoop assembly (8) comprises a hoop clamp (81) connected to the traction main rod; and a hoop handle (82) for hand-holding is provided on the hoop clamp (81).

7. The novel lightweight aircraft traction device according to claim 6 is characterized in that: The walking device (6) comprises a walking bracket (61) and a turbine worm gear mechanism (63); the bottom end of the turbine worm gear mechanism is connected to the traction main rod (2); the top end of the turbine worm gear mechanism is connected to the walking bracket (61); and a pulley (62) is installed at the bottom of the walking bracket (61).

8. The novel lightweight aircraft traction device according to claim 7 is characterized in that: The worm gear mechanism (63) comprises a telescopic rod body which is hollow and can be extended in length, and a hand crank arranged outside the telescopic rod body.

9. The novel lightweight aircraft traction device according to claim 8, characterized in that: The traction ring assembly (5) comprises a fixing plate (51) for connecting with a second flange (4), a fixing platform (52) arranged on the fixing plate (51), and a ring body (53) assembled on the fixing platform (52); the end of the ring body (53) is connected to a buffer component assembled in the fixing platform (52) via a connecting rod.

10. The novel lightweight aircraft traction device according to claim 9, characterized in that: An expansion rod (9) is connected between the traction main rod (2) and the traction ring assembly (5); two ends of the expansion rod (9) are respectively connected to the second flange (4) and the fixing plate (51) via a third flange.

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