SU1208234A1 - Apparatus for measuring relative displacements of floor and roof rock - Google Patents

Description

The invention relates to the mining industry, in particular, to devices for continuously recording measurements of relative displacements of roof rocks and soil, and can be used in measuring relative displacements of rocks in mining workings.

The purpose of the invention is to increase the reliability of the device and the accuracy of measurements by ensuring the contactless recording of the vector of movement of the roof frame.

FIG. 1 shows the device, a general view; Fig. 2 shows the connection circuit of the radiator (light source I) of the receiver (P), the polling unit (VO), the memory unit (BP) and the digital printing device (CPU),

A device for measuring the relative displacements of roof rocks and soil contains a bench mark 1 installed in the roof on which a telescopic tube 3 consisting of two parts (mobile and mobile) is suspended by means of a movable mount 2, for example: a measure made in the form of a ball joint. motionless). A ruler 4 is attached to the inner side of the fixed part of the telescopic tube 3, on which photosensitive elements are located (for example, photodiodes). At the upper end of the movable part of the telescopic tube, there is a sleeve 5 fixed with a side window 6. A light source 7 is installed inside the sleeve. A slider 8 is attached to the lower end of the movable part of the telescopic tube 3, which is made of two strips connected by ends at a right angle. At the free ends of the slider rails installed sources 9 of light and made slit holes 10, which are located on the lower side of the slide 8 at an angle of 90 to each other. The slider 8 under the action of the spring 11 is constantly pressed against the tablet 12 mounted on the frame 13 installed in the soil. The tablet 12 is made in the form of two rails connected by ends at a right angle. Photosensitive elements (for example, photodiodes) are located along the rails of the tablet.

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The left holes 10 and the slats of the plate 12 are mutually perpendicular.

To eliminate the impact of friction; Zun 8 on the slats of the tablet 1 2 on the deviation of the telescopic tube 3, its weight must significantly exceed the weight of the slide 8. To prevent rotation of the slide 8 around its axis, the slide 0 on the part of the telescopic tube 3 is made with a longitudinal protrusion 14.

The device works as follows.

The polling unit through certain

15 time intervals are surveyed all groups of photosensitive elements. Each photosensitive element has its own number; Thus, the position of the photosensitive element, from which the light signal is received, carries complete information about the offset of the reference 1 along the corresponding coordinate.

Vertical offset frames 1

25 and 13, relative to each other, cause the sleeve 5 to move relative to the ruler 4, while the light beam passing through the window 6 hits one of the photosensitive elements

30 of the group located on the ruler 4. The sequence number of the illuminated photo-sensitive element carries information about the magnitude of the vertical displacement.

At horizontal displacements of frames 1 and 13, the half 8 is moved relative to the tablet 12. The first ray of light, passing through each slit hole 10, hits one of the photosensitive elements of the slats of the tablet 12, perpendicular to this slit hole 10. The sequence number of the illuminated photosensitive item on each

., from the slats of the plate 12, recorded by the memory unit, carries information about the displacement along the corresponding coordinate in the horizontal plane.

The results of a survey of groups of photosensitive elements are recorded in a memory unit, about where they are output to a digital printing device or an electronic computer with plotting as necessary.

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Editor A. Ogar

Thebes.2

Compiled by G. Alekseeva

Tehred (O. Vashchigaina Proofreader G. Reshetnik

Order 214/42

Circulation 470

INSIGHTS of the USSR State Committee

for inventions and discoveries 113035, Moscow, Zh-35, Raushsk nab., 4/5

Filial PGS Patent, g, Uzhgorod, st. Design, 4.

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Claims (2)

1. DEVICE FOR MEASURING RELATIVE DISPLACEMENTS OF ROOF OF ROOF AND SOIL, containing a telescopic pipe mounted on the benchmark of the formation roof, the movable part of which is spring-loaded, a rack with a tablet mounted on the benchmark of the soil and a recording unit, characterized in that, in order to increase the reliability and accuracy measurements by providing non-contact registration of the movement vector of the roof reference, it is equipped with photosensitive elements connected to the recording unit, light sources, a slider and a sleeve with a shackle window, and the tablet and slider are made of each of the two rails connected by ends at right angles, while photosensitive elements are uniformly located along the rails of the tablet, slots are made on the free ends of the creeper rails, the first and second light sources are installed opposite them, and at one end of the movable a slider is fixed on the part of the telescopic pipe, 'and on the other a sleeve with a side window inside which a third light source is installed, and on the inner surface of the fixed part of the telescopic pipe evenly other photosensitive elements are located. 2. The device according to p. ^ Characterized in that the telescopic pipe is mounted on the roof reference articulated. >