Wheel-holding traction device of rodless aircraft tractor

Abstract

The utility model relates to the technical field of wheel holding traction, and discloses a rodless type aircraft tractor wheel holding traction device which comprises a moving mechanism and a wheel holding mechanism, the wheel holding mechanism is movably connected to the top of the moving mechanism, the wheel holding mechanism comprises a driving unit and a limiting unit, the driving unit is movably connected to the interior of the moving mechanism, and the limiting unit is movably connected to the interior of the moving mechanism. And the limiting unit is movably connected to the interior of the moving mechanism. According to the rodless type aircraft tractor holding wheel traction device, fine adjustment of the holding frames is achieved through the hydraulic device, accurate butt joint of the holding frames and aircraft rollers is guaranteed, additional loads caused by position deviation are avoided, and therefore the structural safety of a nose landing gear of an aircraft is protected; the rodless tractor can ensure accurate butt joint with the aircraft rollers, stable and accurate traction operation is achieved, adjustment can be conveniently conducted according to the rollers with different diameters, and the flexibility is high.

Description

Technical Field

[0001] The utility model relates to the technical field of wheel-holding traction, in particular to a wheel-holding traction device for a rodless aircraft tractor. Background Art

[0002] At present, before entering the take-off runway, the aircraft must taxi for a long distance, and the taxiing of the aircraft relies on the air reverse thrust generated by the jet engine, so the fuel consumption is too large. Therefore, considering the economic cost, a tractor is usually used to move before entering the take-off runway. Moreover, all aircraft fly forward most of the time during their flight, which means that they do not need the reverse gear function at all, so military experts do not have to make such a change deliberately, because this function may also affect the structure of the aircraft, so most aircraft do not have a reverse gear, which further illustrates the importance of the tractor. According to the different traction methods, tractors are usually divided into two categories: with-bar type and without-bar type. However, with-bar tractors have the disadvantages of having to be equipped with a traction bar that matches the aircraft model, a large turning radius, difficult to operate, and high fuel consumption. In contrast, without-bar tractors have the advantages of low operating costs, simple and efficient operation, etc.

[0003] The prior art discloses a rodless aircraft tractor wheel-holding traction device with application number: 202123227844.4. It includes a vehicle body, a base turntable, a movable base, a base assist support assembly, a movable base hydraulic cylinder, a bottom lifting clamp, a bottom lifting hydraulic cylinder and a multi-stage hydraulic clamp device; the above utility model has the following effects: through the cooperation of the movable base, the bottom lifting clamp and the multi-stage hydraulic clamp device, the aircraft wheels are lifted and clamped, so that the aircraft can run synchronously with the tractor without starting the jet engine, and complete forward, turning and reverse movements. The movement process is stable and accurate, which greatly reduces the working time, saves manpower and greatly improves the work efficiency. By using part of the mass of the aircraft to increase the friction between the wheel and the ground, fuel consumption is reduced, and the service life is extended. At the same time, the intermediate link of the traction rod is reduced, making the movement process of the aircraft easier to control and greatly improving the work efficiency. In addition, the device has a reasonable structural design, is easy to use, safe and reliable.

[0004] However, the existing technology still has the following shortcomings. First, when the above device is used, the aircraft roller is limited by flipping and locking. However, the limiting range of the above device is relatively limited, and the limiting range cannot be adjusted according to rollers of different diameters. Therefore, when used with rollers of different diameters, the limiting range cannot be stable. Utility Model Content

[0005] The utility model aims to provide a rodless aircraft tractor wheel-holding traction device to solve the problems raised in the above-mentioned background technology.

[0006] To achieve the above-mentioned purpose, the utility model provides the following technical solution: a rodless aircraft tractor wheel-holding traction device, comprising a moving mechanism and a wheel-holding mechanism, wherein the wheel-holding mechanism is movably connected to the top of the moving mechanism.

[0007] The wheel-holding mechanism comprises a driving unit and a limiting unit, wherein the driving unit is movably connected to the interior of the moving mechanism, and the limiting unit is movably connected to the interior of the moving mechanism.

[0008] Preferably, the moving mechanism consists of a frame, a driving groove, a limiting groove, a roller and a connecting head. The driving groove is fixedly opened inside the frame, the limiting groove is opened on the side of the frame, the roller is rotatably connected to the side of the frame, and the connecting head is fixedly connected to the side away from the limiting groove, playing the main role of bearing and moving.

[0009] Preferably, the driving unit is composed of a first hydraulic push rod, a connecting shaft, a first limit plate, a second hydraulic push rod and a lifting plate, the first hydraulic push rod is movably connected to the inside of the driving groove, the connecting shaft is rotatably connected to the inside of the limit groove, the first limit plate is rotatably connected to the surface of the connecting shaft, the second hydraulic push rod is movably connected to the inside of the driving groove, and the lifting plate is rotatably connected to the inside of the limit groove, playing the main role of driving the limit.

[0010] Preferably, the limiting unit consists of an opening and closing shaft, a block, a limiting door plate, a pad, a buckle, a third hydraulic push rod and a second limiting plate, the opening and closing shaft is rotatably connected to the side of the limiting groove, the block is movably connected to the side of the limiting groove, the limiting door plate is rotatably connected to the surface of the opening and closing shaft, the pad is fixedly connected to the inner side of the limiting door plate, the buckle is fixedly connected to the side of the limiting door plate away from the closing shaft, the third hydraulic push rod is movably connected to the top of the limiting door plate, and the second limiting plate is rotatably connected to the other end of the third hydraulic push rod and the inner side of the limiting door plate, which plays a major limiting role.

[0011] Preferably, the first limit plate is rotatably connected to the output end of the first hydraulic push rod, the lifting plate is rotatably connected to the output end of the second hydraulic push rod, and the second limit plate is rotatably connected to the output end of the third hydraulic push rod, and is driven hydraulically and conveniently adjusted.

[0012] Preferably, the first limiting plate and the second limiting plate are designed to face each other, so that when the limiting door panel is closed, the front and rear ends of the aircraft roller can be tightly clamped and limited by the first limiting plate and the second limiting plate.

[0013] Preferably, anti-slip bars are provided on the tops of the first limiting plate and the second limiting plate to improve the stability of the limiting.

[0014] Compared with the prior art, the beneficial effects of the utility model are:

[0015] The rodless aircraft tractor wheel-holding traction device achieves fine adjustment of the clamping frame through a hydraulic device, ensuring precise docking with the aircraft roller, avoiding additional loads caused by position deviation, and thus protecting the structural safety of the aircraft's front landing gear.

[0016] The wheel-holding traction device of the rodless aircraft tractor can ensure accurate docking with the aircraft roller through the precise clamping of two clamping frames, thereby achieving stable and accurate traction operations, and can be easily adjusted according to rollers of different diameters, with high flexibility. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 This is a schematic diagram of the appearance structure of the utility model;

[0018] Figure 2 This is a schematic diagram of the internal structure of the limit groove of the utility model;

[0019] Figure 3 This is a schematic diagram of the expanded structure of the limited door panel of the utility model;

[0020] Figure 4 It is a schematic diagram of the holding and limiting structure of the utility model.

[0021] In the figure: 1. moving mechanism; 101. frame; 102. driving groove; 103. limiting groove; 104. roller; 105. connector; 2. wheel holding mechanism; 201. first hydraulic push rod; 202. connecting shaft; 203. first limiting plate; 204. second hydraulic push rod; 205. lifting plate; 211. opening and closing shaft; 212. block; 213. limiting door plate; 214. pad; 215. buckle; 216. third hydraulic push rod; 217. second limiting plate. DETAILED DESCRIPTION

[0022] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0023] See also Figure 1-4 The utility model provides the following technical solutions: a rodless aircraft tractor wheel-holding traction device, comprising a moving mechanism 1 and a wheel-holding mechanism 2, wherein the wheel-holding mechanism 2 is movably connected to the top of the moving mechanism 1.

[0024] The wheel-holding mechanism 2 includes a driving unit and a limiting unit. The driving unit is movably connected to the interior of the moving mechanism 1 , and the limiting unit is movably connected to the interior of the moving mechanism 1 .

[0025] The moving mechanism 1 consists of a frame 101, a driving groove 102, a limiting groove 103, a roller 104 and a connecting head 105. The driving groove 102 is fixedly opened inside the frame 101, the limiting groove 103 is opened on the side of the frame 101, the roller 104 is rotatably connected to the side of the frame 101, and the connecting head 105 is fixedly connected to the side away from the limiting groove 103, playing the main role of bearing and moving.

[0026] The driving unit is composed of a first hydraulic push rod 201, a connecting shaft 202, a first limiting plate 203, a second hydraulic push rod 204 and a lifting plate 205. The first hydraulic push rod 201 is movably connected to the inside of the driving groove 102, the connecting shaft 202 is rotatably connected to the inside of the limiting groove 103, the first limiting plate 203 is rotatably connected to the surface of the connecting shaft 202, the first limiting plate 203 is rotatably connected to the output end of the first hydraulic push rod 201, and the tops of the first limiting plate 203 and the second limiting plate 217 are provided with anti-slip bars to improve the stability of the limiting, the lifting plate 205 is rotatably connected to the output end of the second hydraulic push rod 204, the second limiting plate 217 is rotatably connected to the output end of the third hydraulic push rod 216, and is driven hydraulically and is convenient for adjustment. The second hydraulic push rod 204 is movably connected to the inside of the driving groove 102, and the lifting plate 205 is rotatably connected to the inside of the limiting groove 103, which plays the main role of driving the limiting, and the limiting unit is composed of an opening and closing The rotating shaft 211, the block 212, the limiting door plate 213, the pad 214, the buckle 215, the third hydraulic push rod 216 and the second limiting plate 217 are composed of the opening and closing rotating shaft 211, the opening and closing rotating shaft 211 is rotatably connected to the side of the limiting groove 103, the block 212 is movably connected to the side of the limiting groove 103, the limiting door plate 213 is rotatably connected to the surface of the opening and closing rotating shaft 211, the pad 214 is fixedly connected to the inner side of the limiting door plate 213, and the buckle 215 is fixedly connected to the limiting door plate 213 away from the inner side. On one side of the opening and closing shaft 211, the third hydraulic push rod 216 is movably connected to the top of the limiting door plate 213, and the second limiting plate 217 is rotatably connected to the other end of the third hydraulic push rod 216 and the inner side of the limiting door plate 213. The first limiting plate 203 and the second limiting plate 217 are designed to be opposite to each other, so that when the limiting door plate 213 is closed, the front and rear ends of the aircraft roller can be clamped and limited by the first limiting plate 203 and the second limiting plate 217, thereby playing a major limiting role.

[0027] When in use, the tractor is moved to the aircraft roller, the limiting door panel 213 is unfolded, and the roller is docked through the limiting groove 103. After docking, the limiting door panel 213 is closed, and the first hydraulic push rod 201, the second hydraulic push rod 204 and the third hydraulic push rod 216 are driven to drive the respective limiting structures to clamp the aircraft roller and limit it.

[0028] Although the embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the present invention, and that the scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. A wheel-holding traction device for a rodless aircraft tractor, comprising a moving mechanism (1) and a wheel-holding mechanism (2), characterized in that: The wheel holding mechanism (2) is movably connected to the top of the moving mechanism (1); The wheel-holding mechanism (2) comprises a driving unit and a limiting unit, the driving unit being movably connected to the interior of the moving mechanism (1), and the limiting unit being movably connected to the interior of the moving mechanism (1); The moving mechanism (1) is composed of a vehicle frame (101), a driving slot (102), a limiting slot (103), a roller (104) and a connector (105); the driving slot (102) is fixedly opened inside the vehicle frame (101); the limiting slot (103) is opened on a side of the vehicle frame (101); the roller (104) is rotatably connected to the side of the vehicle frame (101); and the connector (105) is fixedly connected to a side away from the limiting slot (103); The driving unit is composed of a first hydraulic push rod (201), a connecting shaft (202), a first limiting plate (203), a second hydraulic push rod (204) and a lifting plate (205); the first hydraulic push rod (201) is movably connected to the inside of the driving groove (102); the connecting shaft (202) is rotationally connected to the inside of the limiting groove (103); the first limiting plate (203) is rotationally connected to the surface of the connecting shaft (202); the second hydraulic push rod (204) is movably connected to the inside of the driving groove (102); and the lifting plate (205) is rotationally connected to the inside of the limiting groove (103); The limiting unit is composed of an opening and closing rotating shaft (211), a clamping block (212), a limiting door plate (213), a pad (214), a buckle (215), a third hydraulic push rod (216) and a second limiting plate (217); the opening and closing rotating shaft (211) is rotatably connected to a side of the limiting groove (103); the clamping block (212) is movably connected to a side of the limiting groove (103); and the limiting door plate (213) is rotatably connected to the opening and closing rotating shaft ( The backing plate (214) is fixedly connected to the inner side of the limiting door plate (213), the buckle (215) is fixedly connected to the side of the limiting door plate (213) away from the joint rotating shaft (211), the third hydraulic push rod (216) is movably connected to the top of the limiting door plate (213), and the second limiting plate (217) is rotatably connected to the other end of the third hydraulic push rod (216) and the inner side of the limiting door plate (213).

2. A rodless aircraft tractor wheel-holding traction device according to claim 1, characterized in that: The first limit plate (203) is rotatably connected to the output end of the first hydraulic push rod (201), the lifting plate (205) is rotatably connected to the output end of the second hydraulic push rod (204), and the second limit plate (217) is rotatably connected to the output end of the third hydraulic push rod (216).

3. A rodless aircraft tractor wheel-holding traction device according to claim 2, characterized in that: The first limiting plate (203) and the second limiting plate (217) are designed to be opposite to each other.

4. A rodless aircraft tractor wheel-holding traction device according to claim 3, characterized in that: Anti-slip bars are provided on the tops of the first limiting plate (203) and the second limiting plate (217).

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