Large Angle Belt Conveyor
Large-angle belt conveyors are the core equipment for continuous conveying of bulk materials at large angles, and are widely used in industries such as mining, metallurgy, coal, power, ports, chemicals, building materials, and grain. Given that this equipment typically operates continuously around the clock under heavy loads—and features conveying paths comprising horizontal, inclined, and convex/concave transition sections—adherence to proper operating procedures and the quality of maintenance directly impact the equipment's service life, operational safety, and the continuous, stable operation of the production line.
Structural composition of the equipment
From the perspective of operation and maintenance, large-angle belt conveyors can be divided into the following functional modules: (I) Conveyor belt module: including corrugated sidewall conveyor belt (base belt, sidewall, cross partition). This is the core component and also the one most prone to wear.
(II) Drive and Transmission Module: Includes the Y-series electric motor, ZJ-type shaft-mounted gear reducer, wedge-type backstop, drive pulley (rubber-lagged or smooth), and bend pulley.
(III) Support and Idler Module: Includes the tail tensioning device, tail hold-down device, intermediate frame, idler sets (upper flat impact idlers, parallel upper idlers, dual-roll lower idlers, self-aligning idlers, etc.), and head hold-down device.
(IV) Cleaning and Safety Module: Includes the head cleaner, return-side cleaner, belt mistracking alarm device, and bi-directional pull-cord switch.
(V) Frame Module: Includes the upper horizontal section, lower horizontal section, inclined section, convex curved section, and concave curved section frames, as well as the intermediate frame supports.
Application scope of the equipment
Steep-angle belt conveyors are widely used across various industries requiring the steep-angle elevation of materials, including coal, chemicals, building materials, metallurgy, electric power, light industry, grain handling, ports, and shipping.
Types of usable raw materials
Steep-angle belt conveyors are suitable for transporting various bulk materials with a bulk density of 0.5–2.5 t/m³, including crushed stone, limestone, coal, sand, clay, sintered sand powder, wood chips, and grain. The operating temperature range is -25°C to +40°C.
The working principle of the equipment
The operating principle of the steep-angle belt conveyor is essentially the same as that of a standard belt conveyor. Its distinctive feature lies in the use of a conveyor belt equipped with corrugated sidewalls and transverse cleats. The corrugated sidewalls, transverse cleats, and the base belt form "box-like" compartments for conveying materials, thereby enabling steep-angle transport.
Equipment operating instructions
(I) Pre-start Preparation: Conduct a comprehensive inspection before operation. Ensure that all fastening bolts and assembly bolts are secure. Verify that the conveyor belt is undamaged and the side skirts are free of cracks. Confirm that the gearbox oil level is within the specified range. Ensure that safety devices—such as the backstop, belt-drift alarm, and bi-directional pull-cord switches—are in good working order. Proceed with a test run only after manually rotating the mechanism (inching) and confirming the absence of abnormalities.
(II) Startup Sequence: Start the discharge equipment first, followed by the steep-angle belt conveyor. The conveyor must be started under no-load conditions; strictly adhere to the principle of "start without load, stop without load."
(III) Operational Monitoring: Ensure uniform material feeding during operation to avoid overloading. Monitor the conveyor belt for smooth operation and check for belt drift or slippage. Inspect lubrication and temperature rise across all equipment components. Opening protective guards or maintenance hatches during normal operation is strictly prohibited. Control the installation levelness error of the drive unit to within 0.5 mm.
(IV) Shutdown Procedure: Stop the material feed first. Press the stop button only after all material has been fully discharged from the conveyor belt. Stopping the conveyor while under load is strictly prohibited.
