RU2298511C2 - Device for securing the equipment on aircraft floor - Google Patents

Abstract

FIELD: aeronautical engineering; devices for securing the aircraft equipment.

SUBSTANCE: proposed device includes rail built in aircraft floor and provided with several radial seats made at definite pitch along rail slot; device is also provided with bracket with mushroom cones rigidly secured on it; heads of these mushroom cones are received by rail slot; device has retainer and clamp embracing the retainer, bracket and rail. Retainer is made in form of cylinder provided with slot; retainer is located in recess of bracket and its inner surfaces rest against surface of bracket recess, thus preventing it from motion; its outer surface rests against cylindrical surface of rail radial seats. Clamp embracing the retainer, bracket and rail is connected with retainer and bracket by means of bolt joint mounted after mushroom cone.

EFFECT: enhanced operating characteristics, strength and reliability of joint.

3 dwg

Description

The present invention relates to the field of aviation technology, namely, devices for fastening and fixing aircraft equipment (seats, containers, partitions).

A device is known for attaching a passenger seat to the floor (see the Technical Maintenance Manual for the TU-204-200 aircraft. Section 25. Tourist class passenger seat. Description and operation 025.21.04., P.1, 3, fig. 1, ed. A.N. Tupoleva, 10.25.93.), Comprising a housing with supporting elements having protrusions for interacting with a profile rail of the floor made with holes in the upper part, as well as a locking assembly in the form of a bolt with a movable bar having grooves that are mounted on the supporting elements of the housing.

The specified device has low operational reliability, because to fix the chair on the rails of the floor, after installing the supporting elements of both supports of the chair with the protrusions in the holes of the rails, push the chair forward 1/2 of the holes in the rails of the floor. In this case, in the case of non-synchronous movement of the chair supports forward, it is possible to skew the supporting elements and bite their protrusions in the grooves of the floor rails.

A device for securing cargo is also known (see RF patent No. 1823372, class B64D 11/06, B64D 9/00, published in bulletin No. 17 of 06/20/96,) containing a housing with an eye and a threaded socket, t- shaped protrusions; cut-outs installed in the lower part of the casing and interacting with the profile longitudinal guide rail of the floor, while cutouts are made on the sides of the movable cover, and the stops interacting with the shelves of the profile longitudinal guide rail in the lower part.

In this device, the joining part is attached to the rail using pins 6, one of which is attached to the joining part, and the other to the movable plate / plate. The known device has low operational reliability, does not withstand dynamic load up to 16G, since the profile shelves are not pulled together by a bracket and at the indicated loads they diverge.

Also known is a prototype easy-disconnect seat mount assembly on an aircraft (see RF patent No. 2182102 B64D 11/06), containing a rail embedded in the floor with a number of radius sockets, an arm with fungi rigidly fixed on it, the heads of which are placed in the rail groove, and latch. At the same time, the seat attachment unit is equipped with a spring and a ball placed in a blind hole in the housing, which is sunk into the upper recess of the stopper by the action of the spring.

A disadvantage of the known devices is the insufficiently high bond strength at high loads.

The objective of the invention is to improve performance, ensuring the strength and reliability of the connection at high loads through the use of simple parts, ease of connection and selection of technological backlash when fixing parts.

The problem is solved due to the fact that in the device for fastening equipment to the floor of the aircraft, containing a rail embedded in the floor with a series of radius sockets placed with a certain step along the groove of the rail, an arm with fungi rigidly fixed on it, the heads of which are placed in the groove of the rail , and the latch, according to the invention, a bracket is provided covering the latch, bracket and rail, the latch is made in the form of a cylinder having a slot, is placed in a recess made in the bracket, and is supported by its internal surfaces to the surface of the recess of the bracket, preventing its movement, and the outer cylindrical surface into the cylindrical surface of the radius sockets of the rail, while the bracket covering the latch, bracket and rail is connected to the latch and bracket by a bolt connection located behind the fungus.

Thus, the bracket covers both the side surfaces of the rail and is rigidly fastened with a latch, and the latch, in turn, covers the bracket and, thanks to the slot in it, the entire assembly is pulled together with a bolt, while the fungus is in the area of the bracket.

The essence of the invention is illustrated by drawings, where:

figure 1 shows a General view of the mounting device;

figure 2 is a section along aa of figure 1; figure 3 is a cross section along BB figure 2

A device for attaching equipment to the floor of the aircraft contains a rail 1 embedded in the floor with a number of radius sockets 2 placed with a certain step along the groove 3. On the bracket 4, fungi 5 are rigidly fixed, the heads of which are placed in the groove of the rail. A recess is made in the bracket, in which a retainer 6 is installed in the form of a cylinder having a slot.

The bracket 9 covers the bracket 4, the retainer 6 and the rail 2 and is connected to the retainer and the bracket by a bolt connection 10 located behind the fungus.

To fix an item of equipment, for example, an arm to the rail of the floor of the aircraft, it is necessary to introduce the heads of the fungi 5 into the grooves of the rail and slide the bracket by half a step of the holes in the rail to engage the heads of these fungi with the rail. After the shift, in half a step, a latch 6 is installed, which fixes the necessary position of the fungi by crimping the holes in the profile with the outer surfaces, thereby choosing backlash, and at the same time contacts its internal surfaces with cutouts in the bracket, which prevents it from moving. A female bracket 9 is installed from above and the latch, bracket and bracket are pulled together by bolt connection 10, forming a single unit.

As a result, we obtain a backlash-free connection of the bracket and retainer to the rail, essentially rigid, not deformed, including the opening of rail shelves with the bracket coming out of engagement, and capable of breaking only due to the strength properties of the material.

Claims (1)

A device for attaching equipment to the floor of an aircraft, comprising a rail embedded in the floor with a series of radius sockets located at a certain step along the rail groove, an arm with fungi rigidly fixed thereon, the heads of which are located in the rail groove, and a latch, characterized in that it contains the bracket covering the retainer, the bracket and the rail, the retainer is made in the form of a cylinder having a slot, is placed in a recess made in the bracket, and is rested with its internal surfaces in the surface of the bracket recess, p preventing its movement, and the outer cylindrical surface into the cylindrical surface of the radius sockets of the rail, while the bracket covering the latch, bracket and rail is connected to the latch and bracket by a bolt connection located behind the fungus.

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