RU128522U1 - MOBILE ROLL RATTER - Google Patents

Abstract

A mobile roll screen comprising a frame mounted on a caterpillar chassis, on which means of processing the rock material are mounted, made with the possibility of its separation into fractions and directing the bedding product to the conveyor for feeding to the blade and moving the screening material to a conveyor placed under the classification means for feeding into another a blade, as well as a power plant for powering the drives of the working equipment and the caterpillar chassis, characterized in that the frame is made frame and on the frame a hopper for filling the rock material supplied to the rock material processing means, made in the form of at least one two-stage roller screen made in the form of two sections inclined in the downward direction with rolls located between the inclined side walls, is placed at its upper part from its end with wear-resistant lining and made in the form of a set of disk-shaped eccentrics, the tops of which on each roll are exposed along a helical line to move the overboard product in handling to the side walls and moving this product towards the conveyor to discharge the cleaned rock material into the dump, while the conveyor located under the two-stage roller screen is in communication with the side remote conveyor for delivering the screening product to another dump, and the power plant is used to power the drives of the working equipment and the caterpillar chassis is located on the frame frame next to the hopper and is made with the possibility of manual control, located in a separate cabinet, or remote control

Description

The utility model relates to general mechanical engineering and relates to the construction of a mobile roll screen, used mainly in quarries for the classification of stone. It can also be used for sorting products in the enrichment of coal, ore, building materials, in the electric power industry, chemical industry, and other industries. In the framework of this utility model, a roll screen is considered that provides highly efficient sorting of contaminated rocks by separating rocks of up to 1800 mm in size from small material up to 50 mm in size and difficult to separate contaminants: soil, clay, sludge, lime.

One of the directions for increasing the efficiency of coal mining enterprises is improving product quality and expanding the range through partial or complete processing of mineral resources. Therefore, more and more mines and opencasts are equipping their production with processing complexes. However, the disadvantages inherent in traditional crushing technology (on stationary jaw, cone and roll crushers), classification (on low-frequency high-amplitude screens) and transportation (by belt conveyors) reduce the efficiency of creating such industries.

Known mobile crushing and screening complex, including a frame on which a feeder, crusher and conveyor are installed, characterized in that the conveyor is made in the form of a scraper classifier with working and idle branches spaced apart in a vertical plane from each other, while at the bottom of the scraper class of the conveyor in certain areas, trapezoidal slots are made, located at an angle to the direction of movement of the scraper chain of the conveyor, the scrapers of which are transverse in trapezoidal shape, and under each slit-like classification section, estruses were installed to divert the flow of sorted bulk material, for example coal (RU 2082507, publ. 06/27/1997).

The disadvantage of this complex is its lack of effectiveness, associated with the low intensity of the process of separating the coarse fraction from the fine and from pollution.

This utility model is aimed at achieving a technical result, which consists in increasing operational efficiency by providing an autonomous mode of operation, the ability to remotely control the complex and its modes, and introducing a new design scheme for sequentially located screens with individual characteristics of impact on the rock.

The specified technical result is achieved in that in a mobile roll screen containing a frame mounted on a caterpillar chassis, on which there are mounted means for processing rock material, made with the possibility of its separation into fractions and directing the screen product to the conveyor for feeding to the blade and moving the screening product to the placed under the classification tool, a conveyor for feeding into another dump, as well as a power plant for powering the drives of the working equipment and tracked chassis, the frame is frame and on the upper part of the frame there is a hopper for filling the rock material supplied to the rock material processing means, made in the form of at least one two-stage roller screen made in the form of two sections arranged obliquely in the downward direction rolls placed between inclined side walls with wear-resistant lining and made in the form of a set of disk-shaped eccentrics, the vertices of which on each roll are set along a helix for the placement of the screening product in the direction of the side walls and moving this product in the direction of the conveyor to discharge the cleaned rock material into the dump, while the conveyor located under the two-stage roller screen is in communication with the side remote conveyor for delivering the screening product to another dump, and the power plant for feeding drives of working equipment and caterpillar chassis placed on a frame frame next to the hopper and made with the possibility of manual control, placed in a separate cafe, or a remote control.

These features are significant and are interconnected with the formation of a stable set of essential features sufficient to obtain the desired technical result.

The present utility model is illustrated by a specific example of execution, which, however, is not the only possible one, but clearly demonstrates the possibility of achieving the required technical result.

Figure 1 is a side view of a mobile roll screen;

figure 2 is the same as in figure 1, a top view.

This utility model considers the design of a mobile roll screen for mining processing of rocks by separating the lumpy component of the rocks from the fine material of contamination. The main advantage of roll screens in this mobile unit is that, if a sorting limit of 50 to 150 mm is necessary, starting material containing large pieces can be loaded (maximum face length from 1000 to 1600 mm, depending on the size of the screen).

The mobile roll screen comprises a frame mounted on the caterpillar chassis, on which the means of processing the rock material are mounted, made with the possibility of its separation into fractions and directing the screen product to the conveyor for feeding to the blade and moving the screening product to a conveyor placed under the classification means for feeding to another dump . The frame is made of frame and on the upper part of the frame there is a hopper for filling the rock material supplied to the rock material processing means, made in the form of at least one two-stage roller screen made in the form of two sections arranged obliquely in the downward direction rolls placed between inclined side walls with wear-resistant lining and made in the form of a set of disk-shaped eccentrics, the vertices of which on each roll are set along a helix for the placement of the screening product in the direction of the side walls and moving this product in the direction of the conveyor to discharge the cleaned rock material into the dump. The conveyor located under the two-stage roller screen is in communication with the side remote conveyor for delivering the screening product to another dump. And the power plant for powering the drives of the working equipment and the caterpillar chassis is located on the frame frame next to the hopper and is made with the possibility of manual control, located in a separate cabinet, or remote control.

The following is a specific implementation of the mobile installation.

A mobile roll screen on a tracked chassis 1 with a diesel-electric drive 2 (a diesel-electric drive unit is located at the end of the machine next to the hopper) (Figs. 1 and 2) consists of two two-stage roll screens 3 and 4, as well as various transport elements. The feed material is fed directly to the coarse grading plant through a loading hopper 5, which is provided for these purposes. Coarse grading plant, as standard, sorts the material into fractions: the side conveyor 6 delivers the screening product to the blade, the screening product passes through roller screens 3 and 4 and the plate feeder 7 is sent to the dump.

The mobile roll screen is made as follows. The machine rests on the ground by means of a caterpillar chassis 1, made with a hydraulic actuator. A frame frame 8 is based on the tracked chassis 1, on which a hopper 5 is sequentially placed for backfilling rock or other solid material (backfilling is carried out by an excavator or other means). Then, on the frame 8, the first two-stage roller screen 3 and the second two-stage roller screen 4 are mounted in cascade. Each such two-stage screen consists of two roll sections displaced in level (height). Each such section is made up of a set of stacked rolls arranged in series rotationally from an electric drive, made up of identical circular disk eccentrics or cams of wear-resistant steel, displaced along the shaft axis relative to each other. In this case, the eccentrics are displaced one with respect to the adjacent ones so that the vertices of the eccentrics form a helix along the longitudinal axis of the shaft. Such a shaft is prefabricated and can be easily disassembled into individual parts if it is necessary to replace one of the eccentrics. Two two-stage roll screens 3 and 4 form four sections of the cascade, directed from the top down at a given angle, at which pieces of rock move freely when the screening zone at the last stage is released. In principle, execution is possible when only one two-stage roller screen 3 or 4 is used or each of such screens consists of one cascade. Each screen is a section with side inclined walls on which a wear-resistant lining is fixed (removable fastening, it is possible to dismantle individual lining panels in order to replace its worn parts). During the screening, the material is intensively mixed, shaken (especially contaminated moves back and forth), while being freed from contaminants and sorted. This contributes to the screw surface of the location of the eccentrics. When the rolls rotate, the rock makes diagonal movements towards the side walls, falling onto which it again falls onto the rolls.

As the rock passes through the screening, small fractions and dirt fall through the rolls down and fall on the collecting conveyor 9, which delivers the screening product to the side belt conveyor 6 of the belt type. From this conveyor, the feed product is fed into a separate dump or into the body of a transport carrier (for example, a dump truck).

From the last cascade of two two-stage roll screens 3 and 4, the pieces of cleaned rock are fed to the plate feeder 7 in the form of a belt type conveyor with hooks that allow the rock to move upward for pouring into the dump. An additional folding frame can be connected to the plate feeder in node 10

The chassis is a supporting frame profile (frame frame 8) with integrated mounts for a diesel generator, hydraulic unit, roller screens, plate feeder, assembly conveyor, side conveyor and hopper. In self-propelled (on tracked chassis) and semi-mobile (on runners) machine versions, a spatial frame diagram of the frame structure is used, which can significantly reduce the weight of the sorting unit as a whole and facilitate the layout solution of units and assemblies, which provides easy access to all mechanisms for service.

Roller screens are located in the center of the sorting device. The material passes through the corner and round discs mounted on the rolls, and either is transported further through the rolls, or falls into the gap between the corner and round discs. At the same time, roller screens have the ability to “clean” the feed material. This means that conglomerate structures break up, and the fine material is separated from the large rock fragments. In the design of the machine, guide boxes are absent. At the same time, the material does not crumble during the sorting process, which is especially important for coal.

The cascade arrangement of 2 to 5 roll sections in one machine forces incoming material to roll, increasing the cleaning effect, with each shaft including elliptical plates that allow you to sort materials with an even higher percentage of sticky impurities and moisture. The distance between the plates is one of the parameters that governs the class of the under-sieve sorting product. Due to the software control of the movement of the rollers, the greatest effect is achieved when separating difficultly sorted materials due to the possibility of smooth adjustment of speed, stop and reverse on each stage separately.

In a mobile roll screen, there is no need for a feeder, since the material is fed directly to the first cascade of the roller screen. Thus, the overall dimensions of the installation and its energy consumption are reduced, which is most important for self-propelled (on tracked chassis) and semi-mobile (on runners) equipment versions.

The plate feeder 7 is a particularly powerful conveyor serving for the delivery of the screen product (face length reaches up to 1200 mm) to the blade for the screen product. The lateral remote conveyor 6 delivers the feed product to the side dump. During transportation, the lateral remote conveyor is dismantled from the mobile roller screen on a caterpillar track (or folds) and transported separately.

The caterpillar chassis is designed for a maximum speed of 1 km / h. The device has a cable remote control or a radio remote control (optional). The diesel generator is equipped with a Deutz 4-cylinder diesel engine, various built-in and attached devices, as well as the Mess Alte generator, and serves to produce the necessary electric energy for consumers. The hydraulic system is equipped with an electric motor with a capacity of 75 kW (economical electric drive is designed to operate from an external network), a hydraulic pump, a hydraulic oil tank with a capacity of 10 l, various built-in and attached devices and a hydraulic distributor.

The control cabinet 11 with electrical / control is located on the left side at the rear. You can control and manage all functions from it. Using the radio remote control (option), it is possible to conveniently control the device, for example, from a loading excavator. Electric control is used to control the entire mobile installation. The following basic control options are possible:

- through the control cabinet of the installation (all functions and parameters are available);

- using a portable radio remote control (only the most important functions are available, parameters cannot be configured).

The condition for the operation of the installation is the included power supply from the diesel generator. There are four modes that can be used only individually: 1. Driving mode, 2. Operating mode, 3. Repair mode and 4. Emergency driving mode (in case of failure of the PLC-based control system) (software).

In cases 1-3, the electrical control system is constantly working. Modes 1 and 2 are selected using the mode switch either on the control cabinet or using the radio remote control. Mode 3 is selected using the key switch on the control cabinet. In case of operation in mode 4, the control system does not work. The choice of mode 4 is carried out by means of a mode switch and a key switch located on the front side of the control cabinet. Only specially trained personnel are allowed to switch to this mode.

In driving mode, the hydraulic unit with electric drive and both hydraulic traction motors are controlled. The control is carried out either through the radio remote control (option), or through a control cable specially connected to the control cabinet. In operation mode, the following power units are used: lateral remote conveyor, prefabricated conveyor, plate feeder, secondary roller screen, primary cascade roller screen and secondary primary roller screen. They are controlled according to specified programs either through a portable radio remote control, or directly from the control cabinet. The side remote conveyor, prefabricated conveyor, plate feeder has only one rotation speed and one direction of rotation. The speed and direction of rotation of the roller screens, as well as the response time, can be changed. There are 5 programs to choose from. As parameters, the frequency (rotation speed) of electric motors of roll screens and the rotation time in the direction of “FORWARD” and “BACK” are set, and the directions of rotation “FORWARD” and “BACK” are constantly changing each other Secondary roll screen, primary roll screen 2 and primary Roll screen 1 is controlled simultaneously using the same parameter settings. At a certain level of difficulty in the progress of roll screens (determining the motor current), the direction of rotation is automatically reversed.

The parameter “duration of rotation in one direction (FORWARD or BACK)”, as well as other parameters, the operator can freely choose within the control system based on PLC (software). The frequency (speed of rotation) of the roll screen drives can be separately configured in the control cabinet with a frequency converter. When switching from the operating mode to the driving mode, the control system provides the idle transition of individual units, and then the warning system (optical and acoustic) is launched. When switching from driving mode to operating mode, the control system ensures that the warning system (optical and acoustic) is launched, and then the units are idled in a given sequence and direction in accordance with the selected program.

When choosing the repair mode, the units can be individually or simultaneously turned on or off manually using the rotary switch located in the control cabinet. At the same time, the radio control does not work. The emergency mode of movement is intended solely to evacuate the installation from the danger zone in the event of an emergency, for example, if the PLC-based control system is out of order. The installation is controlled by levers located on the proportional valves of the hydraulic system.

One of the distinctive features of mobile roll roar is its complete autonomy and the ability to move on a tracked track (or on runners), inside the quarry. It takes less than two hours to bring equipment from the transport position to the working one and vice versa. The machine is highly economical

Through the use of the Ecodrive hybrid drive, which saves costs and minimizes air emissions. The drive reduces the power consumption of installations whose peak powers are significantly higher than the parameters of the main operating mode. While traditional drives are based on one of the types (hydraulic or electric), the Ecodrive hybrid drive provides a more profitable option for energy consumption, saving up to 70% in fuel consumption. The saving effect is achieved by the fact that at peak capacities (for example, at startup) the drive combination is activated, which serves as a kind of “buffer” for a sharp jump in energy consumption and serves as reliable protection of drive mechanisms during overloads. In addition to the hybrid drive, all installations can operate from public utility networks.

The mobile roll screen does not require a crane for installation; it is put into operation in the shortest possible time and moves freely around the site. Radio control of the movement and selection of standard work programs is performed by the excavator or loader driver. Installation and dismantling of the installation is carried out using its own on-board hydraulics. All belt conveyors can be designed so that they remain in the installation during transportation, and therefore no lifting mechanisms are required to transfer the equipment.

When cleaning the rock from clay impurities, the properties of the material supplied for further processing improve, in which there remains a minimum of “polluting” components. The material on the screen is intensively mixed, shaken (especially contaminated moves back and forth), while freed from contamination and sorted. This contributes to the helical surface of the rolls formed by discs made of wear-resistant steel. The cleaning effect is created by the feed rolls and is set by standard or user-defined control programs. The roar also allows screening of dumps to highlight useful components and feed them for further processing. The plant can be used for pre-sorting heavily contaminated rock mass, for example, as a feeder before a mobile or stationary crushing plant. The design of the screen provides the processing of both highly abrasive and limestone rocks and coal.

Claims (1)

A mobile roll screen comprising a frame mounted on a caterpillar chassis, on which means of processing the rock material are mounted, made with the possibility of its separation into fractions and directing the bedding product to the conveyor for feeding to the blade and moving the screening material to a conveyor placed under the classification means for feeding into another a blade, as well as a power plant for powering the drives of the working equipment and the caterpillar chassis, characterized in that the frame is made frame and on the frame a hopper for filling the rock material supplied to the rock material processing means, made in the form of at least one two-stage roller screen made in the form of two sections inclined in the downward direction with rolls located between the inclined side walls, is placed at its upper part from its end with wear-resistant lining and made in the form of a set of disk-shaped eccentrics, the tops of which on each roll are exposed along a helical line to move the overboard product in handling to the side walls and moving this product towards the conveyor to discharge the cleaned rock material into the dump, while the conveyor located under the two-stage roller screen is in communication with the side remote conveyor for delivering the screening product to another dump, and the power plant is used to power the drives of the working equipment and the caterpillar chassis is located on the frame frame next to the hopper and is made with the possibility of manual control, located in a separate cabinet, or remote control I am.

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