RU2770956C1 - Mechanism for opening and locking handlebars with two folding sections - Google Patents

Abstract

FIELD: aviation.

SUBSTANCE: invention relates to the field of aircrafts, namely to folding aerodynamic surfaces, mechanisms for their opening and locking. A mechanism for opening and locking handlebars with two folding sections contains a compression spring with a support part located in a root part of the handlebar, and a connecting cable fixed with one end in the main folding section and with the other end in the support part, with balls fixed at ends of the cable. Moreover, the supporting part is made in the form of a support cup, and a hole with a slot for a ball with a cable is formed in the main folding section. At the same time, a plate torsion is installed inside the folding axis of the main section, and a bar torsion is installed to open the end section of the handlebar. In this case, the connecting cable is placed with the circumference of the axis of a pivot connection of the root part and the main section.

EFFECT: advantage of the presented structure is the presence of a locking mechanism, which contains spring-loaded clamps installed in vertical and horizontal holes of folding sections of handlebars, which ensures the immobility of aerodynamic surfaces of an aircraft in a working position, which is one of main parameters affecting the maintenance of a given flight path.

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Description

The field of technology to which the invention belongs.

The invention relates to the field of aircraft (LA), namely to foldable aerodynamic surfaces, mechanisms for their disclosure and locking.

The level of technology.

Known invention "Folding steering wheel of a guided missile"
(see patent RU 2365866 C1, IPC F42B 10/14, F42B 15/00 published 08/27/2009), selected as an analogue.

The folding missile rudder contains a root part of the rudder fixed on the output shaft of the drive, a rotary part of the rudder with conical protrusions and a mechanism for opening the rudder. The mechanism contains a spring-loaded pusher located in the drive output shaft. The rotary part of the rudder is mounted on two axle shafts located in the root part of the rudder perpendicular to the specified shaft on both sides of it. In addition, a blind slot is made in the steering part of the steering wheel along the axis of the drive output shaft, and the pusher is installed with the possibility of its movement under the action of the compression spring outward along the axis of the drive shaft. At the outer end of the pusher, a tapered groove is made, oriented along the longitudinal axis of the rocket. A plate is installed across the tapered groove at the end of the pusher, which interacts with the rotary part of the steering wheel.

The rudder is opened as follows (an option for launching a rocket from a transport and launch container).

When leaving the container, the rotary part of the rudder is no longer kept from turning by the walls of the transport and launch container, and under the action of a compression spring through the pusher plate, the rotary part begins to turn around the axle shafts, as a result of which it is set to a vertical position. After that, the pusher, continuing its movement outward along the axis of the shaft, wedges the lower part on the root part of the steering wheel with its tapered groove.

The disadvantages of analog are:

- the use of a compression spring as the only opening element, which limits the use of aircraft in conditions of increased aerodynamic loads;

- the rotary part of the folding missile rudder has one folding axis, which does not always ensure the placement of the aircraft in the launch container of acceptable dimensions, which in turn limits the number of aircraft placed on the launcher.

- in the proposed design of the folding missile rudder, the possibility of unlocking the aerodynamic surface for installation in a transport and launch container is not presented.

Also known is the invention "A mechanism for opening rudders and wings with one or more folding sections" (see patent RU 2037133 C1, IPC F42B 10/14, published on 06/09/1995, the patent has lost its effect), which is closest to the proposed invention and selected as prototype.

The mechanism consists of one or more folding sections pivotally connected on the axles, contains a compression spring with a support part, placed in the root part of the rudder or wing, and a connecting element in the form of a cable attached at one end to the support part, the other - to the peripheral section. In this case, the cable goes around all the axes of the hinged joints of the folding sections. The cable fastening unit is made in the form of balls attached to its ends and placed in the support part made in the form of a cup, as well as in the hole with a slot formed in the peripheral folding section.

Prototype Disadvantages:

- the use of a compression spring as the only opening element, which limits the use of aircraft in conditions of increased aerodynamic loads;

- reduced reliability due to the double kink of the connecting cable, the presence of a groove on the middle folding section and the reduced energy reserve of the compression spring to open the peripheral section of the rudder or wing

- the lack of a mechanism for fixing the rudders or wings in the open (working) position, as a result of which the immobility of the aerodynamic surfaces of the aircraft in the working position is not ensured, which is one of the main parameters affecting the maintenance of a given flight path.

The proposed technical solution eliminates the above disadvantages.

Disclosure of the essence of the invention.

The technical result, which eliminates the above disadvantages, is that the mechanism for opening and locking the rudders with two folding sections, containing a compression spring with a support part located in the root part of the rudder, and a connecting cable fixed at one end in the main folding section and the other the end in the support part, with the balls fixed at the ends of the cable, the support part being made in the form of a support cup, and in the main folding section there is a hole with a slot for the ball with the cable. A lamellar torsion bar is installed inside the folding axis of the main section, and a torsion bar of circular cross section (bar) is installed to open the end section of the steering wheel, while the connecting cable is placed around the pivot joint axis of the root part and the main section.

The lamellar torsion bar is structurally made in the form of a package of thin-sheet plates made of spring steel, installed inside the tube, which acts as a torsion bar body and the axis of rotation of the main section of the steering wheel. The use of a plate torsion bar as one of the opening elements of the main section of the rudder makes it possible to obtain large twist angles, which provides a large opening moment at the final angle of rotation of the main section of the rudder. The bar torsion bar is made in the form of a spring steel rod, installed in the hole of the end section of the rudder, which makes it possible to obtain a large opening moment of the section at a small angle of rotation.

In addition, the claimed design contains spring-loaded latches installed in the vertical and horizontal holes of the folding sections of the steering wheel. In two clamps of the main section and in one end section, a thread is made for a technological device that allows unblocking the folding sections of the rudders by compressing the spring. The clamps are held in the body of the folding section with the help of technological stoppers through small diameter holes. A cylindrical hole is made in one of the clamps of the end section; in this case, unlocking occurs by crushing with a technological device. The proposed release option does not require additional technological holes in the sections of the steering wheel to transfer the structure to the folded position, which provides better aerodynamic characteristics, prevents external factors from affecting the internal parts of the mechanism, as a result, the reliability of the steering wheel increases.

Brief description of the drawings.

The invention is illustrated in the drawings. On FIG. 1 shows the placement of the mechanism for opening and locking the steering wheel in the operating position of the steering wheel, FIG. 2 shows a cross-section of the steering wheel in the working and folded position, in Fig. 3 - the position of the technological stop of the main section with the steering wheel folded.

The mechanism for opening and locking the rudders with two folding sections includes: the root part 1; compression spring 2; cable 3; balls 4 and 5; folding axis 6; tubes 7 and 8; cup 9; main section 10; end section 11; roller 12; lamellar torsion bar 13; bushings 14, 21, 23; clamps 15, 16, 24; springs 17, 18, 19; bar torsion bar 20; knobs 22, 25; insert 26.

Implementation of the invention.

When the aircraft is in the transport and launch container, the rudder sections 10,11 are held in the folded position by the inner surface of the container. After the aircraft leaves the transport and launch container, the process of opening the rudders begins. Under the action of the compression spring 2, the cup 9 moves along the root part 1. In this case, the ball 4, located in the cup 9, pulls the cable 3, and the main section 10 under the influence of a torque around the folding axis 6 and tube 7, created by the compression spring 2 and the plate torsion 13, moves from the folded position to the working position. The ball 5 is the seal of the cable 3 in the main section 10. The end section 11 goes into working position under the action of the torque generated by the bar torsion bar 20 around the axis of the tube 8 and the axis of the bar torsion bar 20 installed in the sections of the steering wheel with the help of a knob 22. Into the vertical hole the main section 10 has a latch 24, a spring 18 and a sleeve 21, which serves to install a spring-loaded latch. After installing the latch 15, the spring 17 and the folding axis 6, a bushing 14 is installed in the horizontal holes of the main section 10 to fix the knob 25, which is the supporting surface for the spring 17. A bushing 23 with a conical hole for the latch 16 is installed in the upper horizontal hole of the main section 10. the moment when the folding sections 10, 11 occupy the working position, the latches 15, 24 under the action of the springs 17 and 18 lock the main section 10, and the latches 15 and 16 lock the end section 11 under the action of the spring 19. A roller 12 is installed in the body of the root part 1, in which a groove for the cable is made, when the main section of the steering wheel 10 is opened, the roller rotates freely in the hole of the root part 1, allowing the cable to take a certain position in the body of the steering wheel, while minimizing friction and biting of the cable, reducing possible loss of torque. The insert 26 is the bearing surface of the compression spring 2 and limits the spatial movement of the cable in the steering wheel body.

Claims (3)

1. A mechanism for opening and locking rudders with two folding sections, containing a compression spring with a support part located in the root part of the steering wheel, and a connecting cable fixed at one end in the main folding section and the other end in the support part, with balls attached to the ends of the cable, moreover, the supporting part is made in the form of a support cup, and in the main folding section a hole is formed with a slot for a ball with a cable, characterized in that a plate torsion bar is installed inside the folding axis of the main section, and a bar torsion bar is installed to open the end section of the steering wheel, while the connecting cable placed around the axis of the swivel of the root part and the main section. 2. The mechanism for opening and locking the rudders with two folding sections according to claim 1, characterized in that the locking mechanism contains spring-loaded latches installed in the vertical and horizontal holes of the folding sections of the rudders. 3. The mechanism for opening and locking the rudders with two folding sections according to claim 2, characterized in that the proposed design of the mechanism provides for the possibility of unlocking the folding sections of the rudders and holding the latches through small-diameter holes using technological stoppers.

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