RU2514018C1 - Method to protect walls of mine skip against wear and device for its realisation - Google Patents

Abstract

FIELD: mining.

SUBSTANCE: invention relates to mining industry, in particular, to equipment for transportation of loose bulk materials, and may be used to protect of the inner surface of skip walls. The method to protect walls of a mine skip against wear includes placement of a protective coating from rubber-fabric material on the inner surface of the skip. The protective coating is installed tightly, in parallel to the bottom of the skip and the wall arranged opposite to the charging window, with formation of the closed space. Prior to charging the space is filled with compressed air, and a multi-section air cushion is created, air from which is released as the skip is filled with material. The device includes a protective coating and fastening elements. The protective coating is made in the form of a membrane. The membrane is divided by fastening elements into sections connected to each other by an air corridor. In the bottom of the skip there is a nozzle for supply of compressed air. The device is equipped with a guide with a spring and a bracket with a valve for supply of compressed air. The bracket is installed as capable of its displacement along the guide.

EFFECT: invention makes it possible to extend service life of a skip, to increase reliability of a device, to simplify protection process and to provide for reduction of material intensity and labour intensiveness during manufacturing.

3 cl, 6 dwg

Description

The invention relates to the mining industry, in particular to equipment for transporting bulk bulk materials, and can be used to protect the inner surface of mine skip hoists.

A known method of protecting the walls of a mine skip from wear, including the placement of a protective coating on the inner surface of the skip (see. Schedule of technological production processes during operation, maintenance, repair and commissioning of cargo hoisting installations with multi-rope hoisting machines on the skip shaft SS-3 of the Taimyrsky mine , RTP-017 / 2-2004, OJSC MMC Norilsk Nickel, publ. 2004).

The disadvantage of this method is the low reliability of protection of the inner surface of the skip from wear.

Closest to the claimed method is a method of protecting the walls of the mine skip from wear, including placing a protective coating on the inner surface of the skip (see the Instructions for the operation and maintenance of rotary skips of the mine of the Komsomolskaya SS, order number: 004/04 / 23.2 from 04/23/2004, OJSC MMC Norilsk Nickel, published on August 31, 2005).

The disadvantage of the prototype method is the complexity of installation and dismantling of the protective coating, made in the form of lining sheets, and their frequent replacement associated with rapid wear due to the absence of shock absorption during loading of the material, which reduces the reliability of protection of the inner surface of the skip.

Known skip installation for inclined lifting, equipped with an elastic element attached to the inner surface of the skip, and a fitting for supplying compressed air to the space between the bottom and the elastic element (see RF patent No. 2293702, IPC ⁹ В66В 17/08, 9/06, 15 / 00, published on February 20, 2007).

The disadvantage of this device is that the elastic element is located only in the bottom of the skip and is able to mitigate the destructive effect of the shock load only in this area, and the side surface remains unprotected. In addition, it performs the lining function to a lesser extent, and to a greater extent contributes to a better separation of the transported material from the bottom of the skip during unloading.

Known mine lifting vessel containing a frame and a body mounted on it, on the inner surface of the walls and bottom of which the lining is reinforced (see AS USSR No. 990629, IPC ³ В66В 17/08, publ. 23.01.1983). Moreover, this lining is made in relief with a variable thickness and is rigidly fixed on the inner surface of the skip.

The disadvantage of this device is the rigid fastening of the lining to the skip, which does not allow it to cushion under shock load. This leads to the destruction of the lining first, and then the skip body itself.

Closest to the claimed device is a lining containing elastic protective elements and elements of their fastening to the surface to be protected (see USSR patent No. 1836150, IPC ⁵ В02С 17/22, publ. 08.23.1993).

The disadvantage of the prototype device is the complexity of the design of the lining due to the presence of a large number of elements, the complexity in its manufacture, as this requires special equipment. In addition, such a lining is material-intensive due to the presence in its design of a significant amount of various materials.

The result of the proposed technical solution is to simplify the protection of the walls of the mine skip from wear, reduce cost and extend the life of the skip, as well as increase the reliability of the protection device, simplify its design and reduce material consumption.

The technical result is achieved by the fact that in the method of protecting the walls of the mine skip from wear, including placing a protective coating on the inner surface of the skip, according to the invention, the protective coating is made of rubber-fabric material and installed hermetically, parallel to the bottom of the skip and the wall opposite the loading window, with the formation closed space, while before loading the space is filled with compressed air and create a multi-section air cushion, the air from which leaves as apolneniya skip material.

The technical result is also achieved by a device for protecting the walls of the mine skip from wear, including a protective elastic coating and fasteners, in which according to the invention the protective elastic coating is made in the form of a membrane installed tightly on the inner surface of the skip parallel to the bottom and the wall opposite the loading window, and the membrane is divided by fasteners into sections interconnected by an air corridor, while a fitting for supplying compressed ozduha, and the device is further provided with a spring guide, a compressible when lowering the skip as its filling material, and disposed under the bottom bracket skip with a valve for compressed air supply, wherein the bracket is mounted movably along the guide.

Fasteners are made in the form of a plate with a chamfer or round rolled.

This technical solution will significantly extend the service life of the skip, increase the reliability of the device, simplify the protection process and ensure a reduction in material consumption and labor intensity in the manufacture.

The invention is illustrated by drawings, where:

figure 1 shows a longitudinal section of a mine skip;

figure 2 is a view A in figure 1;

figure 3 - valve for supplying compressed air in the "open" position at the moment of contact with the fitting at the bottom of the skip;

figure 4 - valve for supplying compressed air in the closed position until it touches the fitting at the bottom of the skip;

figure 5 - mounting the membrane to the walls and the bottom of the skip using a plate with a bevel;

figure 6 - fastening the membrane to the walls and the bottom of the skip using round rolled products.

A device for protecting the walls of the mine skip from wear includes a protective elastic coating made in the form of a membrane 1 and fasteners 2. The membrane 1 is installed hermetically on the inner surface of the skip 3 parallel to the bottom and the wall opposite the loading window. In this case, the membrane 1 is divided by fasteners 2 into sections interconnected by an air corridor (see figure 2). In the bottom of the skip 3 mounted fitting 4 for supplying compressed air. Under the skip bottom 3 there is a guide 5 with a spring 6, which is compressed when the skip is lowered as it is filled with material. Under the bottom of the skip 3, a bracket 7 is installed, equipped with a valve for supplying compressed air 8 and installed with the possibility of its movement along the guide 5 (see Figs. 3, 4). The fastening elements 2 are made in the form of a plate with a chamfer 9 (see figure 5) or round rolled 10 (see figure 6).

The method of protecting the walls of the mine skip from wear is carried out using the device as follows.

On the inner surface of the skip 3 with the help of fasteners 2, the membrane 1 is hermetically fixed and placed parallel to the bottom of the skip and the wall opposite the boot window. Moreover, the membrane 1 is made of rubber-fabric material, for example from a used conveyor belt. As a result, the membrane 1 forms an enclosed space in the form of a multi-section air cushion, the sections of which are connected by an air corridor with the inner surface of the skip 3. Before loading, the air cushion is filled with compressed air supplied from the line (not shown) through valve 8 and fitting 4.

Through the loading window, the material begins to fall into the skip. The shock load is first perceived by the upper section of the cushion, and from it part of the compressed air flows into the lower sections, which perceive the cargo flow next. Part of the compressed air from them flows into neighboring sections, including the upper one. Thus, part of the compressed air flows from section to section until the material fills the skip completely. In this case, the inner surface of the skip 3 does not wear out, since the air cushion prevents the impact of pieces of material when loading.

Skip as it fills with material compresses the spring 6 and falls down along the guide 5 under the action of its own weight. As a result, the bracket 7 is shifted along the guide 5 to the side, opening the hole of the fitting 4, the air from the pillow goes out, and it is completely deflated, making it possible to fill the entire internal space of the skip 3 with the material.

The use of a conveyor belt as a membrane 1, spent on a conveyor belt, will eliminate the cost of its acquisition and manufacture, which will significantly reduce the material consumption and laboriousness in the manufacture of the device. The implementation of the fasteners in the form of a plate with a chamfer or round rolling will prevent the cutting of the membrane 1 at the place of the bolt joint during inflation of the air cushion and loading of material, which, in turn, will extend the life of the device.

Using the proposed technical solution will allow, in comparison with the prototype, to increase the reliability of the device and simplify the protection of the inner surface of the skip, as well as significantly extend the life of the skip itself.

Claims (3)

1. The method of protecting the walls of the mine skip from wear, including placing a protective coating on the inner surface of the skip, characterized in that the protective coating is made of rubber-fabric material and set hermetically, parallel to the bottom of the skip and the wall located opposite the boot window, with the formation of a closed space, in this case, before loading, the space is filled with compressed air and a multi-section air cushion is created, the air from which leaves as the skip is filled with material. 2. A device for protecting the walls of the mine skip from wear, comprising a protective elastic coating and fasteners, characterized in that the protective elastic coating is made in the form of a membrane installed tightly on the inner surface of the skip parallel to the bottom and the wall opposite the boot window, the membrane being divided fasteners to sections connected by an air corridor, while a fitting for supplying compressed air is installed in the bottom of the skip, and the device is additionally equipped with with a spring, compressible under the skip bottom, and an arm located under the skip bottom with a valve for supplying compressed air, the arm being installed with the possibility of its movement along the guide. 3. The device according to p. 2, characterized in that the fasteners are made in the form of a plate with a chamfer or round rolled.

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