RU2391263C2 - Projector searching-illuminating system - Google Patents

Abstract

FIELD: illumination.

SUBSTANCE: invention relates to the field of lighting technology and may be used in installation onto transport means, preferably, helicopters, as board controlled source of light. System comprises upper body, azimuthal rotary part of rotary device equipped with azimuthal electric drive, and projector. Rotary device comprises inclined rotary part connected to azimuthal rotary part, in which projector is installed, as well as electric drive of inclined rotation. Axis of projector is installed with inclination relative to plane of rotation of inclined rotary part, and projector beam is moved along trajectory by mutually matched rotation of projector in azimuthal and inclined planes.

EFFECT: simplified design and improved aerodynamical properties of projector searching-lighting system.

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Description

The invention relates to the field of lighting engineering and can be used when installed on vehicles, mainly helicopters, as an onboard controlled light source.

Searchlights intended for aerial work should ensure the formation of high-intensity light radiation with a remote change in its solid angle and the rotation of the light beam in azimuth (left / right) and elevation (up / down).

Known searchlight mounted on a search and rescue seaplane containing a universal joint fork with two electric drives (SU 1762510 A1, MKI 7 B64D 47/04, publ. 10.11.2004). The disadvantage of this device is the lack of reliability of cable connections of the drive with the body of the searchlight.

Known floodlight system SX-16 Nightsun company Spectrolab (Operation and maintenance manual. Http // www.spectrolab.com). This floodlight system includes a floodlight and a swivel device. The body of the searchlight is made in the form of a cylinder, inside of which the components of the searchlight are placed, including a mechanism for changing focus (solid angle of the beam). The rotary device (cardan) is made in the form of a U-shaped plug with two electric drives (azimuth and elevation). The azimuthal electric drive is installed in the upper part of the cardan and provides mobility to the left / right. The angular electric drive is installed on one of the sides of the plug and ensures the movement of the searchlight up / down. However, the design solution of this searchlight system does not fully protect electric drives from climatic and wind influences.

Closest to the present invention in technical essence and the achieved result is a searchlight search and lighting system according to the patent of the Russian Federation for utility model No. 62895 (IPC B6D 47/04, publ. 15.05.2007), which implements increased protection of electric drives from external influences and improved aerodynamic properties of the rotary device with a searchlight due to the placement of electric drives inside the rotary device and giving it a streamlined shape. The disadvantage of this searchlight system is that the searchlight stands for the dimensions of the rotary device, that is, the searchlight system has an asymmetric shape, which reduces its aerodynamic properties and makes it difficult to control the rotation of the searchlight in flight.

The objective of the invention is to provide a searchlight search and lighting system that is resistant to external influences.

The technical result achieved by using the present invention is to simplify the design and improve the aerodynamic properties of the searchlight search and lighting system.

The problem is achieved with the achievement of the above technical result is solved by the fact that in the searchlight search and lighting system containing the upper housing, the azimuthal rotary part of the rotary device, equipped with an azimuthal electric drive, and the searchlight, the rotary device contains an inclined rotary part associated with the azimuthal rotary part, in which a searchlight and an inclined rotation electric drive are installed, while the axis of the searchlight is installed with an inclination relative to the inclined rotation plane the rotary part, and moving the searchlight beam along the trajectory is carried out by mutually coordinated rotation of the searchlight in the azimuthal and inclined planes.

The technical result is also achieved by the fact that:

azimuthal and inclined rotary parts of the rotary device have a single spherical shape;

the azimuthal electric drive is made in the form of a geared motor, on the output shaft of which a gear is mounted, which is meshed with a gear wheel, with which the azimuthal rotary part mounted in an axial-radial bearing is connected;

the electric drive of the inclined rotation is made in the form of a geared motor, on the output shaft of which a gear is mounted, which is meshed with the internal gear gear, to which the inclined rotary part mounted in the axial-radial bearing is connected;

gear motors of electric drives contain angle sensors;

the upper case is connected with the azimuthal rotary part with the help of shock absorbers.

The technical result is achieved by introducing into the device a rotary inclined rotary part and placing a searchlight inside it with an inclination relative to the inclined plane of rotation, which makes it possible to create a rotary spherical device with the best aerodynamic properties.

The invention is illustrated by drawings, which depict:

figure 1 is a vertical section of the searchlight system in the plane of the direction of the beam of the searchlight;

figure 2 - view of the searchlight system with the casing of the inclined rotary part;

figure 3 is a drawing explaining the geometry of the position of the beam of the spotlight during its oblique rotation.

Searchlight search and lighting system comprises a rotary device 1 with a searchlight 2. A rotary device 1 contains an azimuthal rotary part 3 equipped with an azimuthal electric drive 6. The azimuthal electric drive 6 is placed in the upper case 5 and can be made, for example, in the form of a geared motor 11, on the output shaft of which a gear 12 is mounted, which is in engagement with the gear 13, to which the azimuthal rotary part 3 is mounted, which is installed in the thrust radial bearing 14. Searchlight search and lighting system is attached to the fuselage of the helicopter from below using the upper case 5, which, if necessary, can be connected with the azimuthal rotary part using shock absorbers 8.

The inclined rotary part 4 is equipped with an electric drive 7 of inclined rotation, which can be performed, for example, in the form of a gear motor 15, on the output shaft of which a gear 16 is installed, which is engaged with the gear wheel 17 of the internal gearing, to which the inclined rotary part 4 is connected, installed in a thrust-radial bearing 18. Motor-reducers of electric drives contain internal or external sensors of rotation angles, the data of which are necessary for the formation of control voltages of electric drives.

The searchlight 2 is rigidly fixed inside the inclined rotary part 4 between the two guides 19 and 20. When using air cooling of the searchlight, the housing of the inclined rotary part can be equipped with an air filter 10.

The plane of rotation of the inclined rotary part is deployed (see FIG. 1) with respect to the vertical axis of the search and lighting system at an angle θH, and the searchlight axis is mounted with an inclination relative to the plane of rotation of the inclined rotary part at an angle θP. Depending on the area of use of the searchlight search and lighting system, the rotation angle θH of the rotation of the inclined plane of rotation can lie in the range from 0 to 90 °, and the angle of inclination of the searchlight relative to the inclined plane of rotation can be from 0 to 180 °. When placing a searchlight search and lighting system under the helicopter fuselage from below, simplification of control algorithms is provided at an angle θН = θП = 45 °. In this case, the headlight turning angles are practically ensured in the azimuthal plane up to 350 °, and in the elevation plane - up to 90 ° (down).

The beam is moved along the trajectory (see Fig. 3) by mutually coordinated rotation of the searchlight in the azimuthal and inclined planes using the azimuthal electric drive 6 and the oblique rotation electric drive 7. Figure 3 marked:

9 - the path of the beam during the rotation of the searchlight in an inclined plane;

L1 - the position of the beam at zero elevation angle;

L2 - position of the spotlight beam when turning the inclined rotary part;

β is the elevation angle of the spotlight beam;

α is the displacement of the spotlight beam in azimuth;

γ is the angle of rotation of the inclined rotary part.

To set the beam of the searchlight, for example at an elevation angle β, the searchlight is rotated by turning the inclined rotary part by an angle γ. In this case, at the same time, the spotlight beam will shift in azimuth by an angle α, which is compensated by turning the azimuthal rotary part 3 in the opposite direction.

The control voltage supplied to the electric drive 7 oblique rotation and the electric drive 6 azimuthal for the angle of rotation θH = θP = 45 ° is formed from the following relationships:

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The searchlight beam is moved in azimuth at a constant elevation angle by supplying a control voltage to the azimuthal electric drive 6.

Thus, the claimed searchlight search and lighting system with oblique rotation of the searchlight provides beam movement along a predetermined path when performing a device with a spherical rotary shape having the best aerodynamic properties.

Claims (6)

1. Searchlight search and lighting system, comprising an upper housing, an azimuthal rotary part of the rotary device equipped with an azimuthal electric drive, and a searchlight, characterized in that the rotary device contains an inclined rotary part connected to the azimuthal rotary part, in which the searchlight and the inclined rotation electric drive are installed, the axis of the spotlight is installed with an inclination relative to the plane of rotation of the inclined rotary part, and the movement of the spotlight beam along the path Mutually coordinated rotation of the searchlight in the azimuthal and inclined planes. 2. Searchlight search and lighting system according to claim 1, characterized in that the azimuthal and inclined rotary parts of the rotary device have a single spherical shape. 3. Searchlight search and lighting system according to claim 1, characterized in that the azimuthal electric drive is made in the form of a geared motor, on the output shaft of which a gear is installed, which is in mesh with a gear wheel, to which the azimuthal rotary part is installed, mounted in a thrust radial bearing. 4. The searchlight search and lighting system according to claim 1, characterized in that the inclined rotation electric drive is made in the form of a geared motor, on the output shaft of which is mounted a gear that is meshed with an internal gear to which an inclined rotary part is connected, installed in an angular contact ball bearing. 5. Searchlight search and lighting system according to claim 1, characterized in that the gear motors of the electric drives contain angle sensors. 6. Searchlight search and lighting system according to claim 1, characterized in that the upper housing is connected to the azimuthal rotary part using shock absorbers.

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