SU1461711A1 - Apparatus for monitoring breaking of conveyer belt - Google Patents

Abstract

The invention relates to conveyor construction and the mining industry, metallurgy, and construction. The purpose of the invention is to improve the reliability of the device and accelerate the detection of tape breaks. The device contains an electrical sensor in the form of a rotary frame (P) on the axes x 14 and 15. P consists of the upper magnetic core 4 with the primary 6 and secondary 7 windings. On the sides P, clamps 9 and 10 are fastened to the inserts 8 of a non-ferromagnetic material, the lower magnetic conductor W, the rod 11 with slots 12 and 13 for moving it vertically. Located P on the tape 16 in the same vertical plane with the lower rollers 5 and forms with them the magnetic conductor. The axes of rotation of the upper rollers are offset relative to their geometrical axes. When P is turned by waking, the magnetic flux is broken and the current of the secondary winding 7 gives a signal. A negligible amount of spillage does not change the position of P. In this case, the magnetic flux created by the primary winding 6 varies depending on the magnetic permeability of the spill. 1 3. p. F-crystals, 3 ill. SS

Description

Phage. 2

The invention relates to a conveyor construction for the mining industry, metallurgy, construction, and more specifically to devices for monitoring the condition of belt conveyors.

The purpose of the invention is to increase the reliability of the operation and accelerate the detection of tape breaks.

FIG. 1 shows a device for detecting a break in a conveyor belt, general view; in fig. 2 shows section A-A in FIG. one; in fig. 3 is a view B in FIG. 2

The device contains top roller electric

ten

With the conductive rod 11, the latter rotates the frame 3 and the increased air gap breaks the magnetic flux between the magnetic conductor with the rod 4 and the lower rollers. The secondary winding current, detected, for example, by an electrical contact microammeter through a rectifier, changes dramatically, and its contacts close the signal circuit or the disconnecting electric device.

With a small amount of spillage, when the frame 3 does not change its position, the magnetic flux created by the primary winding varies, depending on the magnetic permeability of the material of the pro-bearing with rollers 1 sensor located under the upper roller support. The rollers 1 are the upper rollers, spread out in front of the electric sensor. To reduce the magnetic resistance, the two edges of the gap in the gap are displaced in the gap, the lower edge of the magnetic core relative to their geometrical axis. The water bottom rod 11 is made by an electric sensor made in the form of a pv-contour of the cross section of the tape. An adjustable frame 3 of the magnetic core, an air gap pushes off through the middle rod 4 and is installed in one vertical of the vertical guides 12 and 13 of the plane with the lower rollers 5, the lower rod 11 clamps 9 and 10. forming the magnetic conductor with it. On the upper rod 4 of the swivel frame 3, there is a primary winding 6 and a secondary winding 7. On the sides of the frame 3, inserts 8 are made of non-ferromagnetic material, to which, by means of clamps 9 and 10, a bottom-conducting magnetic core 11 is attached, having vertical slots 12 and 13 to move

25

Since the magnetic flux intersects the air gap four times: between the side rod and the lower roller, between the lower roller and the lower rod, between the lower rod and the side rod, the changes in current values are more significant.

lower rod vertically. Frame 3 has rotation axes 14 and 15 that are shifted upwards relative to the center of gravity for a stable vertical position.

The upper roller carrier is located in front of the electric sensor in the direction of movement of the idle branch 16 of the conveyor belt.

The device works as follows.

When the tape is moving, for example, at a speed of 5 m / s, the frequency of oscillation of roller 1 with an offset axis 2 per second with a diameter

Claims (2)

1. A device for detecting a break in a conveyor belt, including an electric sensor and rollers mounted on the axis of rotation of the upper roller carriage placed in front of the electric sensor along the 35th movement of the idle branch of the belt located on the roller rollers of the lower roller carriage, in order to increase reliability and accelerating the detection of belt breaks, the electrical sensor is made in the form of 150 mm installed in one verolika, amounts to 10 tactical plane with the lower roller bearing with the formation of th frame of the rotary magnetic flux carrying material attached to its upper magnetic core rod present primary and WTO ribbons or destruction of the stitching by transverse-winding windings, while turning Swan per second. The oscillation of the tape causes the shaking and movement of the transported material and its penetration into the breaks. and longitudinal ruptures on the tape. The insertion of the tape leads to chipping from large pieces and the destruction of sticking in the tears of the tape. Forced spillage the frame has inserts located in its lower part from a non-ferromagnetic material and the lower magnetic conductor rod fixed on them, and the rollers of the upper roller-supports are made with shifted With the conductive rod 11, the latter rotates the frame 3 and the increased air gap breaks the magnetic flux between the magnetic conductor with the rod 4 and the lower rollers. The secondary winding current, detected, for example, by an electrical contact microammeter through a rectifier, changes dramatically, and its contacts close the signal circuit or the disconnecting electric device. With a small amount of spillage, when the frame 3 does not change its position, the magnetic flux created by the primary winding varies depending on the magnetic permeability of the spillage material. To reduce the magnetic resistance in the gap, the lower edge of the magnetoconductive bottom rod 11 is made along the transverse contour ribbon section. The air gap is adjusted by means of the vertical guides 12 and 13 of the lower rod 11 by clamps 9 and 10. Since the magnetic flux intersects the air gap four times: between the side rod and the lower roller, between the lower roller and the lower rod, between the lower rod and the side rod, the changes in current values are more significant. With the lower edge of the shank 11 of the cross-section of the cross-section of the ribbons of the gap, the rock guides 11 are clamped 9 Invention Formula about 1. A device for detecting a break in a conveyor belt, including an electric sensor and rollers mounted on the axis of rotation of the upper roller carriage placed in front of the electric sensor along the 35th movement of the idle branch of the belt located on the roller rollers of the lower roller carriage, in order to increase reliability and accelerating the detection of belt breaks, the electrical sensor is made as a roller mounted on the same ticker plane with the bottom roller frame and has non-ferromide inserts in its lower part agnitnogo material and attached to them the lower magnetically conductive rod, and the rollers of the upper roller supports are made with an idle belt occurs in the area in front of the 50 axis of rotation relative to their geometrical sensor. In order to eliminate foreign materials on the idler belt, rollers 1 with offset axes 2 are installed immediately after the tape turning section or after the driving drum. cic axes. 2. A device according to claim 1, characterized in that the lower magnetic core is fixed to the inserts by means of clamps located in vertical slots. When spilled into the air 55, made in the lower magnetic conductive the gap between the idler belt and the lower magical axes. 2. A device according to claim 1, characterized in that the lower magnetic core is fixed to the inserts by means of clamps located in vertical slots.  made in the lower magnetic conductor rod. Bu B rotated FIG. 3