RU1804519C - Method of regulating tension of twisted members in the process of manufacturing ropes - Google Patents

Abstract

SUMMARY OF THE INVENTION: the length of simultaneously twisted elements in a concentric layer of a rope is controlled by individual meter counters, while the rope is twisted only with the same meter readings of all structural elements. The same meter readings and the combined end surfaces of all elements with a flat section of the cut rope made it possible to quantify the uniform tension of the elements being knitted. 1 s.p. f-ly, 1 ill.

Description

The invention relates to technical measurements, relates to controlling the tension of the elements to be twisted into one or more concentric layers of the rope and can be used mainly in the hardware industry in the production of steel ropes, as well as in other industries related to the manufacture of twisted products from hemp, sisal, cotton and other thread-like structural elements.

The aim of the invention is to increase the aggregate strength of the rope by ensuring equal lengths of the knitted elements, which will reduce or completely eliminate the difference between the aggregate and total strength of the wires, uniformly load all structural elements during operation of the ropes and thereby reduce the actual diameter of the rope, respectively, by 12- 25%, which ultimately will lead to a decrease in the size of lifting mechanisms or an increase in their carrying capacity.

The drawing shows a wiring diagram of two elements 4 and 8, reeled from coils 2 and 9, installed in the rotor of the basket machine, each of which, before twisting into rope 8, covers the measuring wheel of an individual meter 3 and 7, installed, for example, on shaft 1 of the cable machines between its front disc and calibrating dies 5.

Individual meter counters in the cable machine are provided for each element to be twisted and, together with all elements of the concentric layer, are selected with a similar measurement error.

In this case, the same length of all the counters will correspond to the same length of structural elements that are simultaneously twisted into a concentric layer or into adjacent concentric layers of the rope, which is equivalent to the fact that these structural elements will be twisted into a rope with the same micro-stresses of compression or tension over the cross section of the manufactured rope , which provides soel

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the location of the end surfaces of all elements with the cross-sectional plane of the cut rope.

Therefore, according to the readings of all the counters, at any moment of the twisting of the rope, it will be possible to detect a more strained or weakened element, since the readings of the counters of these elements will not coincide with the readings of the counters of other elements, which will make it possible to make the necessary adjustment of the braking forces of the coils with more tensioned or weakened elements in one direction or another.

In this case, meter counters can be mounted on a cable car, along the movement of the curled elements, in any convenient place for inspection.

The provided control over the equal length of the twisted elements makes it possible to simultaneously judge the uniform tension of all structural elements, if the end surfaces of all twisted elements in the rope are aligned with its cross-sectional plane.

Thus, the same readings of the meter counters and the combined end surfaces of all elements along the rope section made it possible to quantify the uniform tension of the elements being twisted and to ensure their equal length in any rope volume.

We will consider the implementation of the control method using the example of manufacturing a three-strand rope with a diameter of 17.0 mm of a 3 x 27 (3 + 9 + 15) construction according to GOST 3093-80, tuned to a conventional qno-lay.

After making a 5-10 m rope, the machine is stopped and the readings of all three meter counters are inspected, and with the same meter readings, the rope is continued to be twisted from elements of the same length.

If the said rope is cut, then the end surfaces of all three strands will be aligned with the plane of the cross-section of the rope. Suppose that when examining the counters, it turned out that the reading of one counter does not coincide with the same readings of the other two counters. This means that said element is either in a tightened or weakened state and requires additional adjustment of the braking forces of the coil.

After making the appropriate adjustment of the braking force of the coil with a weakened or tightened element, the machine is again switched on to lay the rope, and,

if at the next examination

all counters will match, car

include on the final lay of the rope.

In this case, the correct setting of the lay parameters and the correct readings of all the counters are additionally controlled by the cut section of the rope, with which the end surfaces of all elements must be combined.

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Claims (2)

1. A method of controlling the tension of the knitted elements in the manufacturing process of the rope, including comparing the lengths of the elements and adjusting them, distinguishing them also in order to increase the aggregate strength of the rope due to the weight. liver of equal lengths of stitched elements, each element covers the measuring wheel of an individual meter counter, and periodic comparison of the lengths of the elements with their correction is carried out according to the readings of the counters when the cable machine is stopped. 2. The method according to claim 1, characterized in that the relative deviation of the end surfaces of the elements from the sectional plane of the cut rope is determined from the finished rope.