RU2292458C1 - Device for suspension of bridge during drilling of deep shafts - Google Patents

Abstract

FIELD: mining industry, namely, devices for suspension of bridges with drilling equipment positioned on the bridge during drilling of deep mine shafts, primarily by means of drilling and exploding method.

SUBSTANCE: device for suspension of bridge during drilling of deep shafts includes pulleys, winches, each one of which is connected to bridge by rope in suspension system of pulleys by means of hydro-cylinder held on bridge, rod hollow of which is connected to rod hollows of other hydro-cylinders for evening out stretching of ropes, device is also provided with beams, positioned above the bridge, with rigid mounting thereof in the shaft and possible remounting with deepening of shaft, while each beam is provided with pulleys, circled by ropes of suspension system of pulleys.

EFFECT: decreased weight of bridge suspension ropes in system of pulleys due to decreased length of ropes, possible drilling of deep mine shafts, increased operation reliability of mining equipment.

2 dwg

Description

The invention relates to the mining industry, and in particular to devices for hanging shelves with mining equipment located on a shelf when driving deep shaft shafts, mainly by a blasting method.

Known devices for suspension of the regiment when driving deep trunks from a review by A.M. Tsypkis, A.V. Vyshinsky, V.M. Dubrov "Driving winches for deep mine shafts", M .: NIIINFORMTYAZHMASH, 1966, pp. 11-15, 6 (prototype).

The device consists of a multi-storey shelf, pulleys, winches (single-drum or double-drum), connected to the shelf by a rope according to the multi-bladed suspension scheme, hydraulic cylinders at the free ends of the ropes, the same cavity of each of which is interconnected to equalize the tension of the ropes. A heavy tunneling shelf using the described device is suspended as follows.

The rope from the winch, enveloping the pulley on the pile, the pulley on a multi-storey shelf, is mounted on the under-pulley platform, and for alignment of the suspension ropes in the presence of double-drum winches with a double pulley suspension scheme, the free ends of the ropes are connected to hydraulic cylinders, the same cavities of each of which are interconnected.

When driving a barrel with a depth of 2000 m, a device is required for suspension of the shelf, taking into account the mining equipment located on it, equipped with a triple polyspast suspension. In this case, the rope length is at least 6500 m.

The known device cannot ensure the trouble-free operation of heavy mining equipment on a shelf suspended on ropes of such a length, and most importantly, the manufacture, transportation to the place of operation and winding on ropes of long ropes is a technically difficult, sometimes impossible task.

The technical task of the invention is to reduce the weight of the ropes of the suspension of the shelf according to the tackle scheme by reducing the length of the ropes, providing the possibility of penetration of deep shaft shafts, improving the reliability of mining equipment.

The problem is solved due to the fact that the device for suspension of the shelf when driving deep trunks, including pulleys, winches, each of which is connected to the shelf by a rope according to the tackle suspension circuit by means of a hydraulic cylinder mounted on the shelf, the rod cavity of which is connected to the rod cavities of other hydraulic cylinders for the alignment of the tension of the ropes, equipped with beams placed above the shelf, with their rigid fixing in the trunk and the ability to reinstall as the depths of the trunk, each beam is equipped with pulleys envelope polispastnoy suspension ropes.

The advantages of the invention and its design features are set forth below and are illustrated by drawings, where:

figure 1 schematically shows a device for suspension (option with two double-drum winches on triple sheaves);

figure 2 is the same, a top view.

The suspension device consists of a shelf 1 (a two-story shelf is shown in FIG. 1), pulleys: 2 - mounted on a tunneling head, 3 - mounted on a shelf 1, winches 4 connected to the shelf 1 by a rope 5 according to the tackle suspension scheme. At least two beams 6 are placed above the shelf 1, parallel to it, at some distance, the ends of which are in working condition, with the barrel deep, rigidly fixed to the walls of the barrel 7 using brackets 8 and anchors 9. The beams 6 can be reinstalled as the barrel deep 7. On the beams 6, additional pulleys are mounted 10. Thus, the ropes 5 extending from the winches 4 bend around the pulleys 2 installed on the head, the pulleys 3 installed on the shelf 1 and beyond, fasten around the additional pulleys 10 mounted on the beams 6 ends to mounted m hydraulic cylinders 1 on the shelf 11, filled with lubricant. To equalize the tension of the ropes 5, the rod cavities of the hydraulic cylinders 11 are interconnected into a single hydraulic system 12, equipped with a device that responds to excess of the nominal pressure in the system over the allowable limit and disables in this case the winch drive 4 of the shelf 1 suspension.

The device for hanging shelf 1 operates as follows.

The first section of the trunk, 500-600 m from the upper platform, is carried out using the known device for suspending shelf 1, while the length of the ropes 5 is about 1900 m. At this time, additional pulleys 10 and beams 6 are installed on the under-pin platform. Next, shelves 1 with mining tunneling equipment are installed on the bottom, to the walls of the barrel 7 using brackets 8 and anchors 9 are rigidly fixed at a certain distance, 30-40 m, from shelf 1 of the beam 6, on which additional pulleys are mounted 10. In this case, the ropes 5 round the pulleys 2, 3 and 10 according to the tackle scheme, as described above, and descend to the closures on the hydraulic cylinders 11 connected by the hydraulic system 12, fixed to the shelf. Shelves 1 are lifted by means of winches 4 and the process of sinking the trunk begins.

As follows from the description and drawing, instead of the three long branches of the rope 5, one remains (from the copra to the shelf 1), and the other two, due to the presence of beams 6 and additional pulleys 10, are short, which significantly reduces the total length of the ropes 5 of the suspension of the shelf 1.

As the trunk 7 deepens, the beams 6 with pulleys 10 can be reinstalled several times, while driving is carried out with one long and two short branches of ropes 5. The long branch of the rope 5 can also carry out the functions of a guide, for example, for a bucket.

For the sinking of the mine shaft 7 with a depth of 2 km using the described device for suspension of the regiment 1, it is enough to have a rope 2400 m long.

Therefore, the proposed device for suspension of the shelf provides the possibility of sinking deep shaft shafts, reduces the weight of the ropes by reducing their length, simplifies the task of manufacturing a rope of reduced length, its transportation to the place of operation and winding on winches, which increases the overall reliability of operation of mining equipment.

Claims (1)

A device for suspending a shelf when driving deep trunks, including pulleys, winches, each of which is connected to the shelf by a cable according to the tackle suspension circuit by means of a hydraulic cylinder mounted on the shelf, the rod cavity of which is connected to the rod cavities of other hydraulic cylinders to align the tension of the ropes, characterized in that the device is equipped with beams located above the shelf, with their rigid fixing in the barrel and the ability to reinstall as the barrel deepens, with each beam equipped with pulleys, og aemymi polispastnoy suspension ropes.

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