RU2742841C2 - Duplicated hinge assembly - Google Patents

Abstract

FIELD: aviation.SUBSTANCE: invention relates to aircraft engineering, particularly, to design of duplicated hinge system of aircraft control systems with hollow bolt and duplicating bolt inserted into hollow bolt coaxially with hollow bolt. Duplicated hinged joint (14) comprises a hinge link with spherical bearing (13) and apple (12) of the bearing, holder (4) of the assembly, coaxial hollow bolt (1) and backup bolt (2) with threaded fastener, washer (8) and crown nut (9) with cotter pin. Duplicating bolt (2) is restricted from displacement relative to hollow bolt (1) by groove modified to dimensions of head of duplicating bolt (2). Hollow bolt (1) is restricted from displacement relative to holder (4) of the assembly by means of collar of hollow bolt contacting protrusion-support of holder (4) of assembly. Mutual movement of hollow bolt (1) relative to duplicating bolt (2) is limited by the fixation method. In order to fix duplicating bolt (2) in lugs (6) of hollow bolt (1) there are holes for retainer-limiter (7) limiting movement of duplicating bolt (2).EFFECT: this design has minimum possible weight and dimensions with simultaneous increase of hinge assembly reliability.1 cl, 6 dwg

Description

FIELD OF TECHNOLOGY

The invention relates to aeronautical engineering, in particular to structural elements of duplicated hinge joints of control systems for wing mechanization of an aircraft.

PRIOR ART

From the prior art there is a well-known classical articulated joint of the assembly, consisting of the holder of the assembly, the articulated link - the rocker, connected by a bolt. As part of the hinge link, there is a structural element relative to which the link itself rotates with a conventionally fixed cage. This type of connection does not provide the principle of safety of the hinge joint in case of destruction of the elements of the hinge assembly, in particular the bolt. See “Design and Flight Operation. Aircraft L-410 UVP "A.I. Kovalev, M .: Iz-vo "Transport", 1988, pp. 20-23, p. 3.3 "Control of wing mechanization", fig. 19, 20, 21.

At present, to solve the problem of safe destruction by the method of duplicating the elements of the hinge unit, a duplicated hinge unit is used, in which the bolt consists of a hollow bolt, inside which a duplicate bolt is located. The bearing apple is fixedly mounted on the hollow bolt. See RF patent No. 2196705 IPC В64С 5/02.

The existing site has several disadvantages:

a) the technological complexity of manufacturing a duplicated hinge assembly caused by a large number of fasteners used in it.

b) large overall dimensions, which do not allow its use in the limited spaces of the mechanisms, where the requirement to ensure the gaps between the links of the mechanisms of the aircraft control systems is important.

c) the possibility of movement, including rotation, of the backup bolt relative to the hollow bolt, which leads to the destruction of the structure.

d) the possibility of joint movement and / or rotation of the hollow bolt and the backup bolt relative to the bearing apple, which leads to the destruction of the structure.

DISCLOSURE OF THE INVENTION

The technical result of the claimed invention is to improve the reliability and simplify the design of the duplicated hinge assembly of the aircraft wing mechanization control system by reducing the number of elements of the articulated assembly and the dimensions of the assembly, as well as eliminating the possibility of movement, for example, rotation of the duplicated articulated assembly in the cage of the assembly in order to avoid friction of bolts and clips against each other.

The claimed redundant hinge unit contains a hinge link, a cage, a hollow head bolt and coaxial with it, located inside the hollow bolt, a duplicate bolt, as well as a spherical bearing with an apple of a spherical bearing. The head of the hollow bolt is made in the form of an annular bead with two flats. A flared collar is located at one end of the hollow bolt, and the opposite end of the hollow bolt has a groove formed by the two lugs of the hollow bolt and located between the two lugs. Mounting holes are made in the lugs for the installation of a stop-stop for the movement of a backup bolt, for example, a cotter pin or other device designed to prevent movement of structural parts relative to each other. The duplicate bolt is aligned with the hollow bolt within the hollow bolt. Duplicating bolt, made with a profiled head corresponding to the groove width of the hollow bolt. The flat side of the hollow bolt in order to prevent the hollow bolt from moving, for example, rotation of the hollow bolt relative to the hinge unit yoke, rests against the protrusion of the hinge unit yoke, profiled on the outer side of the hinge unit yoke.

The solution to the problem of lightening the structure, reducing the weight of the structure and increasing the reliability of the structure is ensured by the fact that a duplicated hinge unit containing a hinge link, a cage, a hollow bolt and a duplicate bolt is made in such a way that a hollow bolt with a flange equipped with flats at one end and a groove on the other, a duplicate bolt is inserted coaxially, which is fixed relative to the hollow bolt by a stopper-limiter of the duplicate bolt movement. The stop-stop of movement, made, in particular, in the form of a cotter pin, is installed in the holes of the lugs of the groove and contacts the head of the duplicate bolt, modified to the size of the groove. In addition, the backup bolt is connected to the hollow bolt by a threaded connection, and the stop-protrusion made on the cage of the hinge assembly, in contact with the flange of the hollow bolt, prevents the hollow bolt from moving. The spherical bearing apple is fixedly mounted on the hollow bolt.

To facilitate assembly, eliminate technological gaps of the hinge assembly, as well as eliminate the occurrence of bending moments in the cage of the assembly when the structure is connected with hollow and backup bolts, the structure is equipped with a sliding sleeve.

The sliding sleeve, during assembly, eliminates axial clearances during assembly and operation of the joint, including the hollow bolt and the backup bolt. The sliding bush ensures that the bearing apple is pressed against one of the ring lugs of the assembly and eliminates the possibility of bending moments of the ring lugs contacting the ball of the spherical bearing of the pivot link.

The sliding sleeve ensures that the spherical assembly is pressed against the cage eye of the assembly without the stress of bending of the cage eye in the direction of the coaxial axes of the hollow and backup bolts due to the absence of tightening of the eyes with the hollow bolt and the backup bolt.

For additional fixation of the main hollow bolt and the backup bolt relative to each other, these bolts are connected to each other by means of threaded fasteners locked with a cotter pin located at one end of the backup bolt, and a stop-stop located simultaneously at the other end of the hollow and backup bolt.

DESCRIPTION OF DRAWINGS

The claimed invention is illustrated by the drawings shown in FIG. 1-6.

FIG. 1 is a cross-section of a duplicated hinge assembly.

сечения дублированного шарнирного узла; вид слева.FIG. 2 - isometric

sections of the duplicated hinge joint; left view.

сечения дублированного шарнирного узла; вид справа.FIG. 3 - isometric

sections of the duplicated hinge joint; right view.

дублированного шарнирного узла; вид справа.FIG. 4 - isometric

duplicated hinge assembly; right view.

FIG. 5 is a view A of the duplicated hinge assembly.

FIG. 6 - view B on the duplicated hinge assembly. Where:

pos. 1 - hollow bolt;

pos. 2 - a backup bolt;

pos. 3 - joint link of the assembly;

pos. 4 - knot holder;

pos. 5 - ledge-stop;

pos. 6 - lugs of a hollow bolt;

pos. 7 - stopper-limiter;

pos. 8 - washer;

pos. 9 - castellated nut;

pos. 10 - sliding sleeve;

pos. 11 - cotter pin;

pos. 12 - apple of a spherical bearing;

pos. 13 - spherical bearing;

pos. 14 - duplicated hinge assembly.

CARRYING OUT THE INVENTION

The invention is illustrated by an example of its implementation with reference to the accompanying drawings.

As shown in FIG. 1 duplicated hinge unit (14) contains a hollow bolt (1), a duplicate bolt (2) coaxial with a hollow bolt (1), a hinge link of the unit (3), a yoke of the unit (4). The pivot link of the unit (3) and the yoke of the unit (4) are connected to each other by means of a hollow bolt (1), into which a duplicate bolt (2) is inserted coaxially with it. The pivot link of the assembly (3) includes a spherical bearing (13) containing the bearing apple (12).

As shown in FIG. 6, the hollow bolt (1) is fixed against movement relative to the cage by means of the flats of the rim of the hollow bolt in contact with the stop-stop (5) of the cage of the assembly (4).

As shown in FIG. 5, the duplicating bolt (2) is secured against movement relative to the hollow bolt (1) using a groove consisting of two lugs (6) of the hollow bolt (1). The holes made in the lugs of the groove of the hollow bolt (1) are used to install a stopper-limiter (7), preventing the duplicating bolt (2) from falling out.

To fix the unit in a given position, a washer (8) and a castellated nut (9) are installed on the backup bolt (2), which pulls the joint link of the unit (3), the hollow bolt (1) and the backup (2) along the sliding sleeve (10) bolt. The nut is secured against turning with a locking cotter pin (11).

справа и

слева, а на Фиг. 4 - изометрия дублированного шарнирного узла вид

справа.FIG. 2 and 3, isometric views of the duplicated hinge assembly are shown in section in the views

right and

on the left, and in FIG. 4 - isometric view of the duplicated hinge assembly

on right.

The use of the invention makes it possible to increase the reliability and reduce accidents and catastrophes by increasing the safety of aircraft flights by duplicating the vital elements of the aircraft structure, namely the structural elements of the duplicated hinge nodes of the wing mechanization control systems. Duplication of the hinge unit allows, when a hollow bolt is destroyed, the work of the hinge unit to be performed in full and in the required volume to the duplicate bolt.

Claims (2)

1. A duplicated pivot assembly containing a pivot link with a spherical bearing and bearing apple, a yoke of the assembly, a coaxial hollow bolt and a duplicate bolt with threaded fasteners, a washer and a castellated nut with a cotter pin, characterized in that the hollow bolt contains a flange at one end and a groove with with lugs at the opposite end, the side is made with a flat, and the yoke of the unit contacts the apple of the spherical bearing and contains a stop-step contacting the flat on one side, and is equipped with a sliding sleeve on the other side, the sliding sleeve contacts the inner surface of the cage of the unit and the spherical apple bearing, and the backup bolt is equipped with a profiled head corresponding to the groove width of the hollow bolt lugs, the profiled head contacts the sliding sleeve, while the backup bolt is fixed relative to the hollow bolt with a stop-stop installed in the main bolt groove lugs. 2. The duplicated hinge assembly according to claim 1, characterized in that the hollow and the duplicate bolt are additionally secured from movement by means of a threaded fastener with a washer located at one end of the duplicate bolt and a stopper-stop located at the other end of the hollow and duplicate bolt.

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