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.
Applicatiions
Case1
Case2
