JPS6285771A - Towing tractor - Google Patents

Abstract

PURPOSE:To simply and securely tow an air plane by providing a self-propelled car body provided with a travelling mechanism and a steering mechanism and a weight lifting mechanism such as a lift mounted on the self-propelled car body and provided with a sucker on its upper end to abut against a belly of the air plane. CONSTITUTION:A main body to be 10 brought under the fuselage of an air plane 20 is constituted from a self-propelled car body 1 provided with a traveling mechanism and a steering mechanism and a weight lifting mechanism 2 such as a lift mounted on the self-propelled car body 1. And the self-propelled car body 1 is provided with a cab 4 and wheels 5. Also, the weight lifting mechanism 2 is provided with a sucker 3 abutting against the fuselage of the air plane 20. The self-propelled car body 1 in use is brought in and stopped at the rear side position of the air plane 20 adjacent to a front wheel 8 and then the weight lifting mechanism 2 is lifted to make its sucker 3 to abut against the fuselage of the air plane 20. Thus, the air plane 20, after being slightly lifted, is towed by the main body 10.

Description

DETAILED DESCRIPTION OF THE INVENTION Field of the Invention The present invention relates to a towing tractor, and more particularly to a towing tractor for towing an aircraft to a desired location within an airfield.
Regarding tractors.

Previous technology and its problems Patent No. 1,149,259, Japanese Patent Publication No. 57-43468
The publication describes a towing vehicle equipped with a vehicle body that carries the entire nose wheel of the aircraft and carries part of the weight of the aircraft.
The tractor has been announced. Since the towing tractor described in the above publication carries part of the weight of the airplane, it does not need to be equipped with ballast to generate sufficient friction between the wheels and the ground. Although this method reduces manufacturing costs and is extremely economical, since the legs of the airplane are loaded as they are, excessive force is applied to the front wheels during the loading process and during driving, which may cause damage. The present invention aims to solve this kind of problem occurring with the towing tractor of the above-mentioned patent and to improve the device of the above-mentioned patent.

OBJECT OF THE INVENTION The object of the present invention is to provide a small, quick and reliable vehicle that abuts against the belly of the aircraft body, slightly lifts it, and generates sufficient frictional force on the wheels by bearing part of the weight of the aircraft. Our objective is to provide economical towing tractors that operate efficiently.

The above objects of the present invention are to provide a self-propelled vehicle body equipped with a traveling mechanism and a control mechanism, and a lift or jack mounted on the vehicle body and having a suction cup attached to the upper end thereof to be brought into contact with the abdomen of an aircraft body. This is achieved by the towing tractor of the present invention, which consists of heavy machinery.

DESCRIPTION OF THE PREFERRED EMBODIMENTS The structure of the apparatus of the present invention will be described below with reference to an embodiment shown in the accompanying drawings.

As shown in FIG. 1, the device 10 of the present invention is carried under the body of an aircraft 200, and includes a self-propelled vehicle body 1 equipped with a traveling mechanism and a control mechanism, and a lift mounted on this vehicle body. 2
The lift 2 consists of a heavy equipment tank such as
It is equipped with a suction cup 3 that can be applied to the abdomen of the 00 aircraft. Although a Pandagraph type lift is shown, other types of lifts may be used as well as any suitable hydraulic jack.

As shown in Fig. 2, the suction cup 3 is made of a pliable rubber material, and the upper surface that comes into contact with the aircraft body has a large number of ridges 6, 6 arranged vertically and horizontally. It has a recess or chamber 7.

The vehicle body 1 includes a steering seat 4 at the left end, and a prime mover (not shown) connected to wheels 5.

As the position of use of the device 10 of the invention, the rear side adjacent to the front wheels 8 is chosen. Although the weight of the aircraft placed on the nose wheels 8 is approximately 10 parts of the total weight, the device 10 of the present invention located adjacent to the nose wheels 8 has a weight approximately equal to the weight placed on the nose wheels 8. It is thought that the weight will be reduced.
Ru.

When in use, the lift 2 is lowered to a low position, the vehicle body 1 is brought to the rear position adjacent to the front wheels 8, and the vehicle is parked.Then, the lift is raised and the suction cup 3 is placed on the abdomen of the vehicle body 2o.
When lifting the aircraft slightly, the suction cup 3 is attracted to the abdomen of the aircraft. When the aircraft has been lifted 5 to 10 meters, towing of the aircraft can begin using the device 1o of the present invention.

Effects of the Invention The effects of the present invention are that manufacturing costs can be significantly reduced and operating expenses can be reduced by using an extremely simple structure consisting of a vehicle body and a lift with a suction cup attached to the upper end. In addition, when in use, you can start towing the aircraft by bringing the vehicle under the aircraft, lifting the top end of the lift, applying the suction cup to the belly of the aircraft, and then lifting it slightly to start towing the aircraft. There are advantages to doing so. Furthermore, since the aircraft can be moved to the runway by towing, fuel consumption of the aircraft can be reduced.

4. Additional relations The present invention replaces the towing tractor described in Patent No. 1.149.259 that lifts the front wheels of an aircraft, and by lifting the belly of the aircraft body, the towing tractor lifts the front wheels of the aircraft. This is an improvement over the invention of the above patent in that it prevents the application of excessive stress.

[Brief explanation of drawings]

FIG. 1 is a side view showing the apparatus of the present invention, and FIG. 2 is a plan view showing the main parts of the apparatus of FIG. 1 Vehicle body 2 Lift 3 Suction cup 4 Driver seat 5 Wheel 6 Ridge 7 Recess 8 Front wheel 9 Rear wheel 10 Device 20 of the present invention
Aircraft + 2 Procedural Amendment (Method) % Formula % 1. Indication of the case Japanese Patent Application No. 60-218979 2. Name of the invention Towing Tractor 3. Person making the amendment Relationship to the case Patent Applicant Address Chiyoda, Tokyo 2-4-1 Marunouchi, Ward Name: K-74 Co., Ltd., Agent

Claims (1)

[Claims] A towing tractor consists of a self-propelled vehicle body equipped with a traveling mechanism and a steering mechanism, and a lifting mechanism such as a lift or jack that is mounted on the vehicle body and has a suction cup attached to the upper end that comes into contact with the belly of the aircraft body.