SU63894A1 - Device for controlling wire ropes - Google Patents

Description

The known devices for controlling wire ropes by changing their section and the presence of dangling wires are provided with pivotally secured spring-loaded arms sliding along the surface of the cable under investigation. These devices show a change in the thickness of the rope in only one longitudinal diametrical "plane of the rope.

By the present invention, said known devices are improved such that their resulting indication corresponds to variations in the thickness of the rope in two mutually perpendicular longitudinal diametral planes of the rope. This is achieved by the fact that two sliding levers are applied, covering the rope in pairs at a right angle to each other. In this case, each pair of sliding arms is kinematically associated with a common pointer, the resulting deviation of which is proportional to changes in rope thickness in two mutually perpendicular directions.

The drawing is a diagram of the proposed device.

The device consists of the first two pairs of rollers 2 rotating on

axis x arranged in pairs in the same vertical plane. One pair of rollers (in the right drawing) rotates on fixed axles 6. The other, diametrically opposite pair, rotates on axles that are the shoulder of lever 7. The end of lever 7 is contracted by the force of spring 8 with fixed axis 6. Thus, constant contact of the rollers with a controlled rope 1.

The lever 7 has the ability to rotate on the hinged support 10 and thus set in motion the entire system of unequal arms 11 up to and round 4 inclusive.

In the case of a smaller reduction in the diameter of the rope 1 in the horizontal plane (in this case), the pair of rollers 2 under the action of the spring 8 will move to the right (according to the drawing), thereby, by means of a system of levers, will lift the chu 4 upwards. With its curved end, T ha will raise the arrow 5, moving it along the scale 13 by the corresponding number of divisions.

A similar device is used to simultaneously control the diameter of the rope in a vertical plane.

Here, the lower rollers 3 are fixed, and the opposite rollers are pivotally connected to the unequal arm 12, the long end of which is connected to the hard arm 14, lifting the same arrow 5. The short end of the lever 12 is attracted by the force of the spring 9 to the fixed axis 6.

The scale 13, on which the sharp end of the arrow 5 moves, is graduated as a percentage of the diameter of the rope 1. Due to the transfer of movement from the rollers to the arrow with the help of unequal arms, the cost of dividing the scales can be accepted large enough. On the scale there is a latch 15, which rises with the tip of the arrow to the maximum angle of its lift and as a result of the presence of considerable friction (spring) remains on it evenly after the arrow returns to the zero position.

Against the mark of the maximum allowable diameter reduction by

An electric contact 16 is made at the bottom of the head, which closes with the sharp end of the arrow and activates the signal device.

Subject invention

A device for controlling wire ropes by changing their cross section and the presence of dangling wires with the help of pivotally secured spring-loaded levers sliding along the surface of the cable under investigation, characterized by the use of two pairs of sliding levers, pairwise covering the rope at right angles to each other, and intended for the help of the leverage system on one common pointer so that the resulting deflection of the latter is proportional to the change in the thickness of the rope in two mutually perpendicular directions.