RU2692392C1 - Bottom-hole scraper conveyor - Google Patents

Abstract

FIELD: mining.SUBSTANCE: invention relates to mining industry, in particular to downhole scraper conveyors, with traction transporting chain of closed vertical plane. Face-to-face scraper conveyor includes drive, scanters with bottom and base, guide for chains with scrapers, at that bottom and base are connected to each other by means of trapezoidal cross-section element and inclined wall, and guide is T-shaped and is located between chains, links of which are attached to scrapers by shaped planks. At that, guide, in its cross section, is of spherical shape, scraper is concaved to direction of movement of conveyor chains and dismountable, includes a shaped plate made as an integral part of the guide bushing, in the fixing grooves of which the right and left plowshares are connected, connected to the shaped plank and chains by the bolt joint.EFFECT: improved stability of scrapers position and degree of filling, chutes of chutes, reliability and efficiency of conveyor, easier assembly, dismantling of traction scraper chain and possibility of adjustment of linear chutes of conveyor along soil of bed.1 cl, 4 dwg

Description

The invention relates to the field of the mining industry, in particular to the bottomhole scraper conveyors with a chain closed in a horizontal plane.

Known scraper conveyor (certificate of authorship SU №481706, publ. 08/25/1975), which includes a panning, in the middle part of which is installed a guide for traction chain with scrapers, while the guide is made of separate elements that are installed at a distance from one another .

The disadvantages of this device are the complexity of the design of the connection node of the guide with the traction chain, the impossibility of forming a rational section of the flow of cargo on the conveyor, which leads to a decrease in its performance.

Known downhole scraper conveyor (copyright certificate SU №600311, publ. 03/30/1978), including a horizontally closed traction body with contour scrapers, pan with guides, loading hatches, lemheobraznymi sidewalls and racks-fairing, with the guides mounted on racks - fairing between loading hatches.

The disadvantages of the device are the imbalance of the loads on the scrapers, the impossibility of loading large pieces due to the limited size of the loading window of the conveyor, large energy losses due to friction, which leads to low reliability and performance.

Known mobile scraper conveyor (inventor's certificate SU №300635, publ. 04/07/1971), including linear sections with pan, traction chains with scrapers and shifting jacks, while the pan is equipped with a guide located along the axis, in the slots of which are located the ridges of the scrapers.

The disadvantages of the device are the increased energy costs of friction in the grooves of the guide, the instability of the position of the scrapers, which leads to a decrease in the reliability of the operation of the conveyor, the impossibility of forming a rational cross section of the load flow on the conveyor.

Known downhole conveyor (author's certificate SU №415387, publ. 11/15/1974), including the frame, the working and idle branches of the vertical double-chain traction body with scrapers - plowshares, while the frame is equipped with a T-shaped in cross-section guide, on which the scrapers are installed -leafs, with one idle chain located between the horizontal rollers interacting with it, and the other on vertical rollers.

The disadvantages of the device are cantilever installation of scrapers and, as a result, the imbalance of the loads, the complexity of the design of the traction-transporting chain.

Known scraper bottomhole conveyor (inventor's certificate SU No. 451863, published. 11/30/1974), adopted for the prototype, including a drive, pan with bottom and base, guide for chains with scrapers, while the bottom and base are interconnected by means of a trapezoidal transverse the cross section of the element and the inclined wall, and the guide is made T-shaped and is located between the chains, the links of which are attached to the scrapers by shaped curls.

The disadvantages of the device are not able to ensure the formation of a rational form of the cross section of the flow of cargo on the conveyor, which leads to a decrease in its performance,

The technical result of the invention is to improve the stability of the position of the scrapers and the degree of filling, the chute of the pan, the reliability and performance of the conveyor, ease of installation, disassembly of the traction scraper chain and the ability to control the linear pan of the conveyor on the soil of the formation.

The technical result is achieved by the fact that the guide, in its transverse section, is spherical in shape, the scraper is made concave to the direction of movement of the conveyor chains and collapsible, includes a figured bar, made in one piece with the guide sleeve, in the fixing grooves of which the right and left pins are installed, connected to the figured bar and chain bolted

Scraper bottomhole conveyor is illustrated by the following figures:

FIG. 1 - conveyor (in cross section);

FIG. 2 - conveyor (in plan);

FIG. 3 - figured plank (top view);

FIG. 4 - figured plank (front view), where:

1 - frontal share;

2 - inclined wall;

3 - left ploughshare;

4 - bolted connection;

5 - chain;

6 - figured plank;

7 - guide;

8 - bottom;

9 - right plowshare;

10 - reshtak;

11 - locking groove.

Scraper bottomhole conveyor, including the drive (in Figs. 1, 2, 3 is not shown), panholes 10 with bottom 8 and base, guide 7 for chains 5 with scrapers. The bottom 8 and the base are interconnected by means of a trapezoidal cross-section of the element-frontal plowshare 1 and the inclined wall 2, and the guide is made T-shaped and is located between the chains 5, the links of which are attached to the scrapers by shaped curls 6. The scraper is made concave to the direction of movement of the chains 5 conveyor and collapsible, includes figured strap 6, made in one piece with the guide sleeve 7, in fixing grooves 11 of which are installed right 9 and left 3 pins, connected with figured strap 6 and chains 5 bolt compound 4.

Works pipeline as follows. When the conveyor drive is turned on, the driving force is transmitted by drive sprockets to the traction member, made by chains 5 with scrapers. Chains move with support figured strips 6 on the spherical guide 7, transport the right weight 9 and left 3 ploughshares dragging a mountain mass on the bottoms of 8 racks of the conveyor 10. While the front plowshare 1 and the inclined wall 2 increase the width of the pan 10, the possibility of increasing the degree of filling of the pan of the pan, and hence the performance of the conveyor. The arcuate shape of the scrapers contributes to the formation of a rational cross-section of the coal flow on the conveyor by shifting the load to the axial line of the pan, provides the centering of the coal flow and the balance of displacement forces acting on the scrapers and traction chains. As a result, soil stripping is improved, the volume of rock mass at the bottom of the breast is reduced, and the efforts to convey the conveyor to the bottom are reduced.

Technical and economic efficiency of the technical solution is to increase the productivity of the conveyor by increasing the degree of filling of the pan by forming a rational cross-section of the coal flow on the conveyor, increasing the reliability of the conveyor as a result of centering the coal flow on the conveyor and the balance of displacement forces acting on the scrapers and hauling chains. also the stability of the position of the scrapers resting on the guides with the spherical shape of their cross section.

Claims (1)

Downhole scraper conveyor, including the drive, pan with bottom and base, guide for chains with scrapers, while the bottom and base are interconnected by means of a trapezoidal cross-sectional element and an inclined wall, and the guide is made T-shaped and is located between the chains, the links of which attached to scrapers with curly straps, characterized in that the guide, in its transverse section, is spherical in shape, the scraper is made concave to the direction of movement of the conveyor chains and collapsible, including t contoured strip formed integrally with the guide sleeve in the locking groove which are installed right and left plowshares connected to the shaped bar and bolted connections.

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