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Audited Supplier Heavy-duty stacking and reclaiming system for circular stockyard
Circular gantry scraper stacker and reclaimer is mainly used in building materials, coal, metallurgy, electric power, port, and other industries, and is mostly used to stack limestone or coal and other bulk materials. The cantilever of the stacker is equipped with a belt conveyor, which passes through the steel structure grid roof of the circular stockyard from the belt conveyor on the trestle, and the input materials complete the ring conical stacking through the belt conveyor on the cantilever of the stacker; The reclaimer completes the reclaiming work via three linking processes: traveling system, luffing system, and scraper system. The scraper reclaimer scrapes the materials into the conical hopper under the central column along the slope of the pile and outputs the materials through the vibrating feeder and underground belt conveyor.
Feature
| product | Stacking and Reclaiming System |
| painting | INTERNATIONAL |
| color | green |
| capacity | 1500 t/h |
| character | heavy duty |
| advantage | robust design |
| benefit | low maintenance |
| material handling | coal or limestone |
Main components of circular stacker and reclaimer
1. Stacking steel structure, cantilever belt conveyor
The cantilever stacker takes the central column as the center, one end is the belt conveyor with cantilever steel structure, and the other end is the counterweight box. The middle stacking slewing part is connected with the central column by slewing bearing, and the stacker can rotate by meshing the pinion on the slewing driver with the gear on the central column. The materials entering the circular stockyard are unloaded at the head of the cantilever belt conveyor and directly stacked to the stockyard. The stacker rotates at a certain angle for slope stacking until it is stacked into an annular pile.
There are two main structural types of cantilever stacker, cantilever fixed type and cantilever luffing type.
Comparison of the two types of stackers:
2. King column and slewing mechanism of circular stacker and reclaimer
The king column of the stacker reclaimer is located in the center of the circular stockyard. It is an important component of the stacker reclaimer. It not only bears the load of the main components and the input trestle but also is the installation center of the components. Therefore, its manufacturing and installation process requirements are very high. It is made of steel plate rolled into a cylindrical shape and welded and assembled. The utility model is provided with a stacking steel structure, a rolling bearing for the stacking rotary part, and a cable drag connecting various equipment components
3. Gantry stacker
The gantry scraper reclaimer is mainly composed of gantry, traveling mechanism, reclaiming luffing mechanism, and scraper reclaimer. The gantry is the main component of the rotation, luffing, and load support of the scraper reclaimer. The scraper reclaimer is set under the gantry. The luffing mechanism adopts mechanical winch-type, and one end of the gantry is connected with the central column by a roller bearing, The other end is supported on the circular track on the upper part of the stockyard retaining wall, and the rotation of the reclaimer is driven by the traveling wheel on the circular track. The gantry reclaimer has a robust structure, and most of the weight of the gantry is borne by the retaining wall, which significantly improves the stress state of the central column and makes the operation more reliable.
4. Reclaimer luffing mechanism:
The luffing mechanism is composed of a driving device, drum assembly, double steel wire rope, and pitching electrical detection and control system. The luffing operation of the scraper reclaimer is completed through the pitching mechanism, to achieve the purpose of layered reclaiming.
The luffing mechanism uses double steel wire rope single winding, and the balance mechanism is adopted at the intersection of the two steel wire ropes to ensure that the stress of the left and right steel wire ropes is balanced and the work is safer.
The driving device of the luffing mechanism is mechanically driven by frequency conversion and speed regulation to accurately control the amplitude variation, to control the change of the reclaiming amount. To ensure the safety and accurate and reliable positioning of the pitching mechanism, the driving device adopts a double braking system
5. Scraper reclaimer
(1) The scraper reclaimer adopts a sprocket to drive the roller chain, and then the roller chain drives the scraper to reclaim. This method has large traction, small linear resistance, and durability. It is a reclaiming method integrating reclaiming and transportation.
(2)The scraper is fixed on the double chain mechanism, and the sprocket is driven by the motor at the rear for circular movement. The scraper scrapes the materials at the lower part of the stacker into the conical hopper at the lower part of the king column.
6. Hydraulic system
The hydraulic system of stacker reclaimer mainly includes stacker luffing hydraulic system, scraper chain tensioning hydraulic system, and belt conveyor manual tensioning hydraulic system
The luffing control hydraulic system is composed of a main pump motor unit, control valve unit, oil cylinder, oil tank assembly, hydraulic accessories, and hydraulic pipelines. The pipeline of the luffing cylinder is equipped with a pipeline rupture safety valve and a safety valve group.
The tensioning cylinder control hydraulic system is composed of a pump motor group, control valve group, accumulator, oil cylinder, oil tank assembly, hydraulic accessories, and hydraulic pipelines. The tension of the tensioning cylinder can be adjusted by the corresponding pressure-reducing valve.
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