Product Introduction
Stacker-reclaimers are widely used in the stacking and reclaiming of bulk materials (coal, ore, etc.). Stacker-reclaimers are mainly composed of steel structure,arm belt conveyor,tail car,luffing mechanism, slewing mechanism, trolley running mechanism, dust removal system, bucket wheel device, electrical equipment and other necessary safety and auxiliary facilities. Its arm can rotate, luff, and telescope, and the head rotates the bucket wheel to dig materials. According to its different functions, it can be divided into: stacker, bucket wheel reclaimer, bucket wheel stacker-reclaimer.
Main standards cited: GB/T14695-93 "Arm-type bucket wheel stacker-reclaimer type parameters", JB/T7326-94 "Bucket wheel stacker-reclaimer safety specifications", JB/T7328-94 "Bucket wheel stacker-reclaimer acceptance technical specifications", GB3811-2008 "Crane design specifications", GB6067-85 "Crane safety specifications".
Product Parameter
|
Type |
DQL450/600.25 |
DQL1000/1250.30 |
DQL1800/2000.35 |
DQL2500/3000.40 |
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|
Production Capacity |
Rated Productivity(t/h) |
Stacking |
600 |
1250 |
2000 |
3000 |
|
Reclaim |
450 |
1000 |
1800 |
2500 |
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|
Stacking Height (m) |
Above Rail |
10 |
11 |
12 |
12 |
|
|
Below Rail |
2 |
2 |
2 |
2 |
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|
Materials |
Type and Density (t/m3) |
0.85~1 |
0.85~1 |
0.85~1 |
0.85~1 |
|
|
(mm) |
0~300 |
0~300 |
0~300 |
0~300 |
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|
|
Track Distance |
(m) |
5 |
6 |
7 |
8 |
|
Base Distance |
6 |
7 |
7 |
9 |
||
|
Speed (m/min) |
Slow |
7 |
7 |
7 |
7 |
|
|
Fast |
30 |
30 |
30 |
30 |
||
|
Max.Wheel Load (kn) |
200 |
200 |
<250 |
≤250 |
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|
Recomm Rail |
P43/P50 |
P43/P50 |
QU80/QU100 |
QU80/QU100 |
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|
Power Supply |
6~10KV |
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Product Feature And Application
Feature of Stacker-Reclaimers
Efficient Continuous Operation: The integration of a boom conveyor and slewing mechanism enables seamless switching between stacking and reclaiming, significantly improving operational efficiency.
High Flexibility: The boom can rotate, luff, and telescopically extend, adapting to material piles of varying heights and angles for broad coverage.
Automated Control: Equipped with an intelligent control system, it supports remote operation, automatic positioning, and flow rate adjustment, minimizing manual intervention.
Robust Performance in Harsh Environments: Reinforced structural design with wind-resistant and dust-proof features ensures stable operation in high-dust, high-wind, and other challenging conditions.
Energy Efficiency and Environmental Protection: Utilizes low-energy drive systems, with select models incorporating spray dust suppression systems to reduce environmental pollution.
Application Fields of Stacker-Reclaimers
Thermal Power Plants: Used for coal stacking and reclaiming to ensure uninterrupted fuel supply for boilers.
Ports and Terminals: Handles bulk cargo such as iron ore, coal, and grain, enhancing port handling capacity.
Iron & Steel and Metallurgical Industries: Manages storage and transportation of raw materials like iron ore, coke, and limestone.
Coal Mines: Performs large-scale coal stacking, reclaiming, and blending operations in coal storage yards.
Building Materials and Chemical Sectors: Facilitates storage management of cement raw materials, fertilizers, aggregates, and other bulk commodities.
Product Details
Composition of stacker-reclaimer
I. Main Structure
1. Gantry Frame
Function: Serves as the supporting framework of the equipment, carrying the boom, drive systems, and other components to ensure overall stability and load-bearing capacity.
Components: Includes main beams, support legs, counterweights, etc. Some models adopt full-gantry or semi-gantry designs.
2. Boom
Function: The core component for mounting the conveyor, enabling material stacking and reclaiming coverage through telescoping, luffing, and slewing motions.
Types: Fixed boom or telescopic boom, with some models featuring bidirectional belts (dual-mode for stacking/reclaiming).
II. Motion and Drive Systems
1. Slewing Mechanism
Function: Drives the boom to rotate horizontally (typically 360°), expanding the working radius and precisely positioning the material pile.
Components: Slewing bearing, drive motors, gearboxes, and control systems.
2. Luffing Mechanism
Function: Adjusts the boom's elevation angle to accommodate material piles of varying heights, avoiding collisions with the ground or other equipment.
Implementation: Hydraulic cylinder drives or wire rope winch systems.
3. Travel Mechanism
Function: Drives the equipment along tracks or ground to cover the entire stockyard area.
Types: Rail-mounted (common in large stockyards) or crawler-type (suitable for flexible sites).
III. Material Handling System
1. Boom Conveyor
Function: Transports materials to the top of the pile during stacking and transfers materials from the pile to downstream conveyors via scrapers or bucket wheels during reclaiming.
Design Features: Bidirectional operation, with some models equipped with reversible belts or dual-belt configurations.
2. Reclaiming Device
Types:
Bucket Wheel Reclaimer: Excavates materials via a rotating bucket wheel, suitable for hard bulk materials (e.g., ores, coal).
Scraper Reclaimer: Uses scraper chains for layered reclaiming, ideal for loose materials (e.g., grains, fertilizers).
IV. Control and Safety Systems
1. Intelligent Control System
Function: Integrates PLCs, sensors, and automation software to enable stacking/reclaiming path planning, flow monitoring, fault diagnostics, and remote operation.
2. Safety Protection Devices
Components:
Limit Switches: Prevent the boom from exceeding rotational or luffing ranges.
3. Anti-Collision System: Monitors obstacles via LiDAR or cameras.
Wind Speed Monitor: Automatically locks the equipment during strong winds to prevent tipping.
V. Auxiliary Systems
1. Spray Dust Suppression System
Function: Sprays mist during stacking/reclaiming to reduce dust dispersion.
2. Lubrication System
Function: Automatically supplies lubricant to critical components (e.g., slewing bearings, gears) to extend service life.
Certification
Company Profile
Packaging&Shipping
Evaluation
FAQ
Q: What is the core reclaiming component of a stacker reclaimer? How does it work?
A: The core reclaiming component is the bucket wheel. It consists of the wheel body, buckets, and the bucket wheel drive unit. During operation, the drive unit rotates the wheel body. The buckets mounted on the wheel rim cut into the stockpile and dig material as they rotate. As each bucket rotates near the top of the wheel, the material is discharged by gravity, falls into a rear chute, and slides onto the boom conveyor for transport.
Q: What are the "Three Major Mechanisms" of a stacker reclaimer? What are their respective functions?
A: They are the Travel Mechanism, Slewing Mechanism, and Luffing Mechanism.
Travel Mechanism: Drives the entire machine to move longitudinally along ground rails, covering different stockpile rows or positions.
Slewing Mechanism: Drives the upper structure (including the boom) to rotate horizontally around a central axis, adjusting the lateral range of operation.
Luffing Mechanism: Raises or lowers the boom frame via wire ropes or hydraulic cylinders, changing the discharge or reclaiming height.
Q: Before operating the stacker reclaimer, what key inspections must the operator perform?
A: The operator must perform the following inspections: Confirm the travel rails are clear of obstacles and deformation; check that rail clamps or anchor devices are released; verify no personnel or foreign objects are near the boom conveyor and bucket wheel; test that limit switches for all mechanisms (travel, slewing, luffing) are functional; check hydraulic station oil level and pressure are normal; observe lubrication system oil levels are normal; confirm communication with the central control room is clear; inspect the cable reel status is normal. Any abnormalities must be noted in the inspection record and reported to maintenance personnel. Operation is prohibited until issues are resolved.
Q: During reclaiming, if the bucket wheel motor current remains excessively high or stalls, how should it be handled?
A: The following actions must be taken immediately: First, stop the feed motion (i.e., stop travel and slewing), and immediately stop the bucket wheel rotation. Then, raise the boom sufficiently to disengage the bucket wheel from the stockpile. Investigate whether the cause is excessive digging depth, encountering oversized foreign material, or stockpile collapse. If it is a material issue, clear any foreign objects or compacted material from the bucket wheel area. After resetting, resume operation with a shallower digging depth and closely monitor current changes. If the issue occurs frequently, shut down the machine and inspect the bucket wheel gearbox, bucket tooth wear, and other transmission components for abnormalities.
Q: The slewing bearing is a critical component. What should be noted in its daily maintenance?
A: Lubricating grease of the specified grade must be injected daily through the lubrication points until a small amount of new grease extrudes from the seal. Regularly check the lubrication condition of the gear ring meshing area. Listen for abnormal vibration or noise during slewing. Visually inspect the seal strips for integrity to prevent rainwater and dust from entering the raceway. Periodically check and tighten the connection bolts to the required torque. Using the slewing motion for forcible collision with or scraping against the stockpile is strictly prohibited.