RU2487062C1 - Method of aircraft evacuation - Google Patents

Abstract

FIELD: aircraft engineering.

SUBSTANCE: proposed method is based on using trolley composed of bearing frame 1 and moving frame 3 coupled with tractor 1. Aircraft front led is automatically gripped and locked by gripping mechanism 6 composed of clip with automatic lock arranged at said moving frame 3. Aircraft is lifted by worm drive hinged to bearing frame 1 at two pints that actuates helical rod 7 by power takeoff box via gimbal joint 5.

EFFECT: aircraft evacuation with failed pneumatic roller and in absence of front leg wheel.

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Description

The invention relates to ground handling of aircraft.

A known method of evacuating aircraft [RU No. 2294863, IPC B64F 1/22, published. 03/10/2007, bull. No. 7], based on the use of a tractor, on the frame of which a cargo platform and a lifting mechanism in the form of power cylinders are installed, characterized in that the cargo platform with a telescopic guide is made to rotate in a horizontal plane and is installed in the area of the supporting perimeter of the tractor, which allows for uniform and adjustable additional loading of driving wheels of the tractor to create maximum traction on the adhesion of the wheels to the supporting surface. The disadvantages of this method are the use of tractors of heavy lifting capacity, design complexity.

Another method is known [RU No. 2194652, IPC B64F 1/22, published. 12/20/2002, bull. No. 35], based on the use of a tractor with a carrier, carrying a gripper at the end, interacting with the front desk of the aircraft. The disadvantages of this method is the use of complex electrical units when towing an aircraft, their dimensions and weight.

Also known is a method of evacuating aircraft [RU No. 2172707, IPC B64F 1/22, published. 08/27/2001, bull. No. 24], based on the use of a tractor equipped with a hydraulic system that includes a hydraulic power cylinder for loading the drive wheels of the tractor with the mass of the aircraft in its front pillar.

Closest to the claimed method is a method of evacuating and towing aircraft using a trolley made in the form of a supporting frame coupled to a tractor [RU No. 2316454, IPC B64F 1/22, published. 2008, bull. No. 24]. The disadvantage of this method is the inability to evacuate an aircraft with a failed pneumatic skating rink and an absent front wheel wheel.

The technical result, which is achieved by the proposed method, is to reduce the weight attributable to the front pillar of the aircraft when lifting the fuselage of the aircraft, the ability to evacuate it when rolling out onto the ground with the wheels of the front pillar immersed in the ground, as well as with a broken pneumatic roller and the absence of the front pillar wheel chassis.

The specified technical result is achieved by the fact that in this method of evacuating aircraft, a trolley made in the form of a supporting frame is used, on which a worm gearbox is pivotally mounted at two points, operating from the power take-off via a cardan gear and moving in the vertical plane of the moving frame through a screw shaft , which, in turn, is attached to the gripping mechanism, made in the form of a bracket with a locking device for automatic fixation.

The inventive method of evacuation is carried out using the device shown in figure 1, is a side view; figure 2 is a front view.

One of the options for implementing this method is the evacuation of an aircraft using a trolley made in the form of a supporting frame on which a moving frame is mounted, which is lifted due to the efforts of the worm gear.

Figure 1 shows a General view of the evacuation of the aircraft, including the following elements: tractor 1, bearing frame 2, movable frame 3, worm gear 4, cardan gear 5, gripping mechanism 6, screw rod 7.

Figure 2 shows a device for evacuating aircraft, comprising the following elements: a supporting frame 2, a movable frame 3, a worm gear 4, a gripping mechanism 6, a screw rod 7.

The proposed method for the evacuation of aircraft is implemented using a device that contains: a supporting frame 2 that performs the function of the power base of the structure; a movable frame 3 with a gripping mechanism 6, consisting of a bracket with a locking device for automatic fixation, designed to fix the front pillar of the aircraft; worm gear 4, designed to lift the front pillar of the aircraft; cardan gear 5, designed to transmit torque to the worm gear from the power take-off; screw rod 7, designed to move in the vertical plane of the movable frame. In this case, the standard tow truck 1 performs the function of the tow truck.

The proposed method with a device for evacuation is industrially applicable, since for its implementation, devices and materials used in the aviation industry are used.

Ensuring the evacuation of the aircraft is as follows. Before evacuation or towing, the tractor driver drives up to the aircraft so that the trolley is strictly under the fuselage of the aircraft, then the aircraft technician captures and fixes the front pillar of the aircraft using the capture mechanism. After the front strut is fixed, the tractor driver, on command, raises the frame due to the work of the screw shaft from the worm gear. The gearbox is driven by turning on the power take-off and transmitting torque to the cardan gear, which drives the worm gear. Thereby, the front strut of the aircraft rises above the supporting surface and at the same time the loading of the drive wheels of the tractor, improving its traction and coupling qualities.

Claims (1)

A method of evacuating aircraft based on the use of a trolley made in the form of a supporting frame and a movable frame coupled to a tractor, characterized in that the front pillar of the aircraft is automatically captured and fixed using a locking mechanism made in the form of a bracket with an automatic locking device and fixed on a movable frame, the aircraft is lifted using a worm gear that is pivotally mounted on a supporting frame at two points, which drives the helical rod with a box tbora power through the driveline.

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