RU2119015C1 - Mobile quarry screening plant - Google Patents

Abstract

FIELD: mining machinery and equipment. SUBSTANCE: plant relates to machinery intended for opencast operations. It is used for high-capacity screening of coal in conditions of open coal quarries. Mounted on turnable frame of mobile screening plant are following components: running gear, receiving conveyor, screen. Connected to screen through intermediate conveyors are distributing hoppers, feeders with containers which are adjacent in their upper part to distributing hopper and to mechanism for opening of container cover. In their lower part they are adjacent to weighing scale. Also installed on frame of plant are load-lifting mechanism, conveyor for carrying run-of-mine coal and undersize material, and operator's cabin. Receiving conveyor is adjacent to receiving hopper, it is mounted on rotating circle and provided with isolating plough. EFFECT: higher efficiency. 1 cl, 4 dwg

Description

 The invention relates to machines for open cast mining, and more particularly to mining units for sorting minerals, in particular coal.

 Self-propelled sorting is known, consisting of three movable screens located one above the other, mounted on a common frame, for dividing the initial inert material (aggregate stone) into three classes by size and highlighting the waste rock, and all its equipment and drives from the quarry shaft are mounted on a car with a trailer [1].

 The disadvantage of this sorting is its low productivity due to the strict dependence on the particle size distribution used for sorting the rock mass, which for productive sorting should contain equal amounts (by size) of material loaded into the trolleys, in addition, loading into the trolleys leads to further overloads, due to which grade deteriorates and therefore is poorly applicable for work on coal mines.

 Closest to the proposed invention is a quarry unit for the selective extraction of minerals, comprising a loader with a built-in conveyor, an arrow with a receiving conveyor mounted on a rotary platform, a running gear, transfer conveyors, control hydraulic cylinders and a drive, and it is equipped with a U-shaped frame, which is on top has guides and a lever movably mounted in them, while the U-shaped frame is pivotally connected to the loader with its ends, and the guides are connected by one additional tion of the hydraulic cylinder with the lever, and the other - with loading, while the career unit is mounted on a turntable sorting mechanism and the associated transfer conveyor hopper with mixing mechanisms fossil. Bunkers with fossil mixing mechanisms are mounted on the chassis [2].

 The well-known quarry unit is designed for sorting and processing ores, has a small capacity due to the presence of bunkers with mixing mechanisms and is not applicable for working on coal mines for sorting and shipment of high-quality coal.

 The present invention solves the problem of high-performance sorting of coal in the conditions of coal mines.

 This is achieved by the fact that a mobile mobile sorting unit comprising running equipment with a drive mounted on the frame, a receiving conveyor, a screen and associated transfer conveyor hoppers, the frame is rotatable and feeders with conveyors placed on them are additionally placed on the frame coupled in the upper part with hoppers and a mechanism for opening the lid of the container, and in the lower part with weights, while the frame also has a lifting mechanism that conveyor belt for transporting raw coal and under-sieve material associated with a rotary hopper-distributor, operator's cabin. The receiving conveyor is paired with the receiving hopper, mounted on a turntable and equipped with a plow-separator. Transfer conveyors with hoppers are rotary.

 In FIG. 1 shows a mobile quarry sorting unit; in FIG. 2 - the same, top view; in FIG. 3 is a view A of FIG. 2; in FIG. 4 is a view of the feeders of a mobile quarry sorting unit.

 The mobile quarry sorting unit contains running equipment 1 with a drive 2, a frame 3, on which a turntable 4 with an upper platform 5 is placed. A receiving hopper 6 is mounted on the platform 5, coupled by a conveyor 7 to a distribution hopper 8 (Fig. 3). The conveyor 7 is equipped with a plow-separator 9, under which a screen 10 is installed, connected, in turn, with a conveyor 11 of high-grade coal of one class mounted on a rotary semicircle 12 with a hopper-distributor 13, as well as a conveyor 14 (Fig. 1) of high-quality coal the second class, coupled with the conveyor 15 on the rotary semicircle 16 with the hopper-distributor 17, and the reversing conveyor 18 of the under-sieve material, paired with the conveyor 19 (Fig. 2) on the rotary semicircle 20 with the hopper-distributor 21. On the upper platform 5, in the zone distribution hoppers feeders 22, feeders 22 are placed on which containers 23 are installed. The feeders are equipped with weighing equipment 24 in the lower part, and the mechanism for opening and closing the container lid 25 (Fig. 1). In addition, on the platform 5 there is a slewing crane 26, an operator’s cabin 27, a compressor 28 and a tray 29 of raw coal (Fig. 3).

Career mobile sorting unit (KMSA) works as follows. KMSA works in the technological chain with a mining excavator, moving along with it on a ledge with the help of running equipment 1 (Fig. 1, 3) with drive 2 (Fig. 2) on the frame 3 (Fig. 1, 3). At the same time, KMSA by means of a turntable 4 (Fig. 1, 3) rotates the upper platform 5 with 180 ^° equipment installed on it and can work with an excavator on a ledge in both directions of the formation development front without turns, which expands the possibilities of using KMSA in coal cuts.

 The operator, controlling the IMSA from the cab 27 (Fig. 1, 2), orientates the receiving hopper 6 under the conveyor of the unloading console of the mining excavator (not shown). The produced raw coal through the receiving hopper 6 enters the conveyor 7, where the operator, using the plow separator 9 (Fig. 2), and also, based on the orders for high-quality coal and the properties of the extracted fuel, sends part of the raw coal for sorting into a screen 10, and the rest with the help of the tray 29 (Fig. 3) and the hopper 8 (Fig. 3) is shipped to the vehicle. Rumble 10 divides the raw coal into three classes of fineness with obtaining high-grade coal of two classes and under-sieve material (coal fines). Varietal coal of one class enters the conveyor 11 (Fig. 1, 2) from the screen 10 into the distribution hopper 13 (Fig. 2, 4), where it is loaded into containers 23 (Fig. 1, 2, 4). Varietal coal of another class of fineness comes from the screen 10 (Fig. 1) by conveyor 14 (Fig. 1) to the conveyor 15 (Fig. 1, 2) and then through the hopper the distributor 17 (Fig. 1,2) into the containers. The under-sieve material from the screen 10 (Fig. 1) first enters the reversing conveyor 18 (Fig. 1), and then is loaded onto the conveyor 19 (Fig. 2) and loaded through containers through the hopper 21 (Fig. 2), into containers. For loading high-quality coal and fines in containers of larger capacity, conveyors 11, 15 and 19 (Fig. 2) are made with the possibility of rotation on a semicircle 12, 16 and 20 (Fig. 2), respectively.

 In the case when there are no orders for coal fines, the reverse conveyor 18 (Fig. 1) is turned on in the opposite direction. In this case, coal fines from the conveyor 18 (Fig. 1) falls on the conveyor 7 (Fig. 1, 3) and, together with the raw coal, is shipped through the hopper-distributor 8 (Fig. 3) to the vehicles.

 The loader, working on a ledge with KMSA, delivers empty conveyors 23 to KMSA and installs them on feeders 22 (Fig. 4), then removes the filled container and transports it to the vehicle. Feeders 22 (Fig. 4) are installed on both sides of the hopper-dispenser to ensure uninterrupted operation of the KMSA. They feed the container into the loading zone, for example, under the distribution hopper 13 (FIG. 4), onto the scales 24 (FIG. 4, 2). In this case, the mechanism 25 (Fig. 1) automatically opens the lid of the container. High-quality coal is loaded from the hopper into the container. Filling the container controls the weighing equipment 24, which when filling the container gives a signal to close the valve of the hopper-distributor 13 and the mechanism 25 (Fig. 1) closing the lid of the container. The loader removes the filled container, and at this time the container is loading, standing on the other side of the distribution hopper. To remove loaded containers on the ledge soil, and in some cases loading empty containers on the KMSA, and filled containers on the vehicle, a crane 26 is installed on the KMSA (Fig. 1, 2, 3). Compressor 28 provides the operation of KMSA mechanisms with a pneumatic drive.

 The use of a mobile mobile sorting unit solves the problem of high-performance coal sorting directly during the loading of raw coal, in conditions of coal mines.

Sources of information
1. USSR author's certificate N 82421, cl. B 07 B 1/28, 1947.

 2. USSR author's certificate N 1076548, cl. B 02 F 7/02, 1984.0

Claims (2)

 1. A mobile quarry sorting unit, comprising traveling equipment with a drive mounted on a frame, a receiving conveyor, a screen and associated hopper distributors, characterized in that the frame is rotatable and feeders with containers placed on them are additionally placed on the frame coupled in the upper part with the hopper-distributor and the mechanism for opening the lid of the container, and in the lower part with weights, moreover, the lifting mechanism and the conveyor are also mounted on the frame sportirovaniya raw coal and undersize material associated with a rotary distributor hopper, operator's cab, wherein the receiving conveyor is associated with the receiving hopper, mounted on a turntable and provided with a plow-separator.  2. The unit according to claim 1, characterized in that the transfer conveyors with hoppers are made rotary.

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