RU2297497C2 - Device for rock cutting, transportation and storage by means of cable drag scrapers - Google Patents

Abstract

FIELD: mining, particularly to excavate, transport and stack of barren rock and mineral at placer, marine (off-shore) and bedded deposits.

SUBSTANCE: device comprises scraper, movable trestle arranged between guy ropes with movable blocks. Device also has scraper winch with head and end ropes arranged on the movable trestle. The scraper winch includes two drums with head and end ropes arranged on the drums. The ropes pass over pulleys fastened to movable trestle top. Installed on movable trestle is tension winch provided with tension cable passing over pulley. The second end of tension cable is fastened to the movable trestle. The end rope of the scraper and the tension cable are correspondingly connected with guy ropes by means of blocks associated with movable blocks of guy ropes through collars.

EFFECT: decreased costs of device production, increased output and decreased rock mining costs.

2 dwg

Description

The invention relates to the field of mining and can be used in the extraction, transportation and storage of unproductive rocks and minerals in placer, marine (coastal) and reservoir deposits.

Known devices used in underground mining to deliver ore, mainly to ore passes (1). Known devices are used on the basis of two drum and three drum scraper winches in three scraping schemes: rectilinear, at an angle and radial. All these schemes are based on the stationary placement of winches and are designed to deliver ore to one point - to the ore pass. They are unsuitable for the development of rocks and their storage without involving other equipment.

A device is known for organizing scraper warehouses in coal, gravel and sand pits (2). In the known device, coal from the primary cone into which it is conveyed is distributed over the main stack by a scraper. The scraper winch is mounted on a trolley that can be moved along circular rail tracks.

The disadvantages of the known device are as follows. The area of operation of the scraper is limited to the sector from the coal unloading cone to the rail tracks. The scraper can only be used to transport previously processed breeds. Significant efforts are required for the development of rocks, the use of which will lead to the dumping of the cart on which the winch is mounted from the rail tracks.

Known scraper installation for the extraction and transportation of oil bitumen rocks (3). The known device is two running platforms with masts mounted on rail tracks that are laid on both sides of the developed section. Through the masts, two buckets are fixed by ropes, which, with the help of a winch, move on the surface of the rocks and fill up, then break away from the surface and move to the bunker mounted on one of the platforms, and are unloaded.

The disadvantages of the known device are as follows. In terms of mass, these two running platforms with masts are equal to or more than two cable excavators performing similar work. In order to compensate for the great efforts in the development of rocks, counterweights are installed on the platforms, which, in addition to weighting the design of the installation, make it unstable due to a shift in the center of gravity. In addition, this device requires expensive filling of tracks and laying of rail tracks, and the hopper into which the buckets are unloaded has a small capacity, therefore, this device does not solve the problem of storage of the developed rocks.

Known cable-scraper installation, adopted for the prototype, consisting of two movable support towers, a bucket with a traction rope and anchors with flexible extensions, which are attached rigidly to the anchors and with the help of blocks to the support towers. The traction rope is connected to the front walls of the bucket and, through the drive drum and the envelope block of the towers, is closed to the rear wall of the bucket, forming an endless rope (4).

The disadvantages of the known installation are as follows. The design, consisting of two support towers, is quite complex, has a large mass, the movement of two support towers along the front of the work is time-consuming. In many cases, the design with two supporting towers cannot be implemented in practice, for example, in swampy floodplains of rivers or in the development of coastal offshore fields.

The task to which the invention is directed is to reduce the cost of manufacturing the device, increase its productivity and reduce the cost of developing rocks. The problem can be solved by achieving a technical result, which consists in simplifying the device, increasing reliability, expanding the scope of application in mining technology of the simplest and lightest equipment to replace the currently used bulldozers, wheel scrapers and cable excavators, as well as the well-known cable-scrapers installations. They are often ineffective, especially when developing rocks with low bearing capacity, in flooded conditions, on viscous clay soils.

Bulldozers and wheel scrapers are heavy equipment, a large amount of energy is spent on moving its own mass and significant material costs are involved in maintaining it in working condition.

More efficient rope excavators also have the disadvantage that the radius of digging and unloading is limited by the length of the boom, and with its increase the design of the excavator becomes more complicated and heavier and its cost increases sharply.

Compared with the prototype, it is also possible to expand the scope of cable-scraper plants, reduce their cost and operating costs.

The specified technical result is achieved by the fact that in the known device for the development, movement and storage of rocks by rope scrapers, including a scraper, a movable flyover, a scraper winch with a head and tail ropes, installed on a movable flyover, installed on a movable flyover, according to the invention, a scraper winch It is made of double-drum, on the drums of which there are envelopes fixed at the top of the mobile flyover, pulleys, head and tail ropes, and on the front hydrochloric trestle mounted tensioning winch rope tensioning pulley envelope, a second end fixed to the movable trestle, the scraper and the tail rope tensioning rope tensioning winches respectively connected to cable stretch marks by units connected with the mobile units through the cable extensions clips.

The installation of a scraper winch and a tension winch on a platform of a mobile flyover with the transfer of their efforts through the pulleys increases the stability of the flyover. The use of the tensioning winch mechanism makes it easy to adjust the position of the flyover in the vertical and horizontal planes and to absorb dynamic loads transmitted from the scraper. All this increases the reliability, mobility and productivity of the device.

Comparative analysis shows that the proposed device is different from the prototype. This allows us to conclude that the claimed invention meets the criterion of "novelty."

To prove compliance of the claimed invention with the criterion of "inventive step", a comparison was made with other technical solutions known from the "prior art".

The inventive device for the development, movement and storage of rocks by rope scrapers meets the criterion of "inventive step", since the combination of its essential features allows to increase the technical capabilities of rope scrapers, expand their scope, which, in turn, will simplify the technology of mining and reduce their cost production, which does not follow explicitly from the prior art.

The invention is illustrated by drawings, where

figure 1 shows a General view of the device;

figure 2 is a section along aa.

The device, with the help of which the rocks are developed, moved and stored by a cable scraper, includes a flyover 1 with a platform 2 and its movement mechanism, a double-drum scraper winch 3 and a scraper 4, two cable braces 5 with movable blocks 6 and a tensioner winch 7.

On the platform 2 of the flyover 1, a double-drum scraper winch 3 is installed, a tensioning winch 7 and a mechanism for moving the flyover. The mechanism for moving the flyover is not shown in the drawing, since various mechanisms can be used to move the flyover 1. When working on unstable, viscous soils, for example, two options are preferable: a rather complicated walking mechanism like dragline excavators and the simplest one - flat sleds with a bend on both sides, moved with two winches.

At the top of the flyover 1 there are installed: a pulley of the head rope 8 of the scraper winch 3, a pulley of the tail rope 9 of the scraper winch 3 and a pulley of the tension rope 10.

On one of the drums of the scraper winch 3, a head rope 11 is fixed, which goes around the pulley of the head rope 8 of the scraper winch 3 and is connected to the harness 12 of the scraper 4. On the other drum of the scraper winch 3, the tail rope 13 of the scraper 4 is fastened, which goes around the pulley of the tail rope 9 and the block 14 at the cable tie 5 and attached to the rear wall of the scraper 4. Block 14 at the cable tie 5 and the movable block 6 are connected by a common clip 15.

A tension rope 16 is attached to the drum of the tensioning winch 7, which surrounds the pulley of the tensioning rope 10 and the block 14 at the cable stretch 5 and is fixed at the top of the overpass 1 from its opposite side. The block 14 at the cable tie 5 and the movable block 6 are also connected by a common clip 15, as on the opposite side of the flyover 1.

The device operates as follows.

On the work site outside the developed strip of rocks 17 and the planned dump of rocks 18, a mobile overpass 1 is installed. The design of the overpass 1 must be rigid and collapsible.

Rope stretch marks 5 are fixed outside the work site from its two sides. Rope stretch 5 can be attached to piles, immersed in the ground by driving or by drilling, as well as to the "carrion" or anchors. The length of the cable extensions 5 should be greater than the distance between the points of their attachment. The “slack” of the cable extensions 5 should be such that the movable blocks 6 can freely move synchronously while moving the overpass 1. The movable blocks 6 must be of a closed type, and ensure that the rope adheres to the block groove.

Before starting work, the ropes of the scraper winch 3 are passed through the corresponding pulleys and block and connected to the scraper 4. The rope of the tensioner winch 7 is also passed through the corresponding pulley and block and secured by the second end to the overpass 1.

The device is controlled remotely. After installation, all the ropes of the device are pulled, and the rocks are developed, moved and stored in the dump of 18 breeds with a scraper 4. In the process, all the ropes must be in tension. The tension of the head rope 11 moves the scraper 4 along the surface of the developed strip of rocks 17. In this case, the scraper 4 is filled with rock, moves to the dump of rocks 18 and unloaded. By pulling the tail rope 13, the scraper returns to the developed strip of rocks 17. The tension of the tail rope 13 also controls the angle of the scraper to the horizon when it moves from the developed strip of rocks 17 to the dump of 18 rocks. Work is underway. As work is completed at the approaches, overpass 1 gradually moves from one side of the site to the other. In this case, the scraper 4 is synchronously shifted along the strip of rocks 17 together with the trestle 1.

Information sources

1. Handbook of mining (underground work). Edited by Academician A.M. Terpigoreva and Ing. N.A. Yartseva. Book one. - M .: 1952. p. 850-854.

2. Sheshko E.E. Mining and transport machinery and equipment for open work. Textbook Manual for universities. - 3rd ed. supervisor and ext. - M .: Publishing house of the Moscow State Mining University, 2003, p.234-235.

3. Description of the invention to the copyright certificate of the USSR No. 1578268, class. E 02 F 3/54, 1990

4. Description of the invention to the copyright certificate of the USSR No. 1654466, cl. E 02 F 3/54, 1991

Claims (1)

A device for the development, movement and storage of rocks by cable scrapers, including a scraper, a movable flyover installed between the cable extensions with movable blocks, a scraper winch with a head and tail ropes located on the mobile flyover, characterized in that the scraper winch is double-drum, the envelopes of which are placed on the drums pulleys, head and tail ropes fixed at the top of the mobile overpass, and a tension winch with an envelope tension pulley is installed on the mobile overpass rope, the second end of which is mounted on a movable flyover, while the tail rope of the scraper and the tension rope of the tensioning winch are connected, respectively, with rope extensions by means of blocks connected to movable blocks of rope extensions through clips.

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