Equipment Introduction
The mobile belt conveyor is a lightweight, continuous bulk material conveying device with its own wheels, free movement, and adjustable tilt and height. Based on a standard fixed belt conveyor, it integrates a walking mechanism and manual/hydraulic lifting supports. It requires no civil engineering foundation and can operate simply by plugging in electricity. Primarily designed for multi-point temporary transfers, truck loading and unloading, and flexible material loading in workshops, it is a versatile auxiliary conveying device for fertilizer plant stockpiles, temporary raw material transfers, and bagged fertilizer loading and unloading.
Core Advantages
- Movable: Standard configuration includes omnidirectional/solid tires, allowing for single-person operation and easy switching of work positions;
- Adjustable Height and Inclination: Freely adjustable within a 10°–22° tilt range, adaptable to trucks, silos, and varying feed inlets;
- Zero Construction Costs: No concrete foundation required; simply place the machine on-site for immediate operation;
- Multi-functional: Capable of conveying bulk granules, powdered raw materials, and bagged fertilizers. Optional anti-slip side belts prevent slippage of high-moisture fertilizers;
- Flexible Space Layout: Can be moved to a corner of a warehouse when not in use, without occupying a fixed workstation on the production line;
- Variable Frequency Dual-Speed Options: Two speed settings, suitable for bulk material conveying and bagged finished product transfer. Key differences between fixed and telescopic belt conveyors:
- Compared to fixed belt conveyors: They have wheels, are movable, have a conveying length ≤20m, and are only used for temporary transfers, not as a permanent process link in the production line;
- Compared to telescopic belt conveyors: They do not have nested telescopic frames, the overall length is fixed, and the unloading position is changed only by moving the entire machine. They are cheaper and have a simpler structure; telescopic conveyors are only used for bagged loading and unloading deep inside the vehicle, while mobile belt conveyors can handle both bulk and bagged loading in various scenarios.
Equipment Structure Composition
| Equipment Classification | Structural Parts / Special Modules | Function Description |
|---|---|---|
| Belt Conveyor Main Core Parts | Conveyor Belt | Flexible endless component for carrying materials. It is generally made of wear‑resistant rubber (bulk materials) or PVC/PU (packaged parts). Chevron pattern can be selected on the surface to improve anti‑skid performance for inclined conveying. |
| Drive Unit | Combination of motor, reducer and coupling to provide power for the whole machine. Power is usually 0.75‑15 kW, determined by load and length. | |
| Roller Group | Drive pulley (head driving), redirecting pulley (tail return). The surface is lagged to increase friction. | |
| Idler Group | Trough‑shaped carrying idlers support the load‑carrying belt, parallel return idlers support the return belt section. Buffer idlers are installed at feeding section to absorb material impact. | |
| Tensioning Device | Screw tensioner or counter‑weight tensioner, keeps proper belt tension and prevents slipping. | |
| Frame | Welded steel frame; light‑duty type uses aluminum profiles. Channel steel or square tube structure ensures overall rigidity. | |
| Mobile Conveyor Special Modules | Traveling Mechanism | Heavy‑duty inflatable tires or universal casters. Front wheels are directional and rear wheels are universal, convenient for pushing or towing movement on flat or rough ground. |
| Lifting Device | Manual screw lifting or hydraulic cylinder lifting, adjust conveying inclination and discharging height (common range:1.5‑6 m). | |
| Feed Hopper | Large‑capacity feed hopper with movable baffles to prevent material overflow. Some models are equipped with spiral blades for scattered material feeding. | |
| Support Legs | Telescopic support legs plus ground base plates. Lower and lock support legs during operation to avoid displacement during running. | |
| Protection Device | Side guide baffles, tail guardrail, emergency stop switch, belt guard cover to ensure operation safety. |
Working Principle
The mobile belt conveyor operates based on the principle of friction drive, similar to a conventional belt conveyor:
- Power Output: The motor’s speed is reduced and torque increased via a reducer, driving the head drive roller to rotate;
- Friction Traction: A tensioning device maintains sufficient positive pressure between the conveyor belt and the drive roller, generating friction to drive the belt continuously;
- Material Loading: Material is evenly fed onto the conveyor belt through the feed hopper, supported by trough rollers and moving synchronously with the belt;
- Unloading and Return: After reaching the head of the conveyor, material is unloaded by gravity; the empty belt is deflected back via the tail deflector roller, returning to the feed end for the next cycle.
Mobility Characteristics: Before operation, the equipment is pushed to the target position via the traveling mechanism, and the support legs are lowered and locked; the frame tilt angle (typically 10°–26°) is adjusted via the lifting device according to the height of the truck bed or hopper to achieve precise docking.
Application Scope
- Core Scenarios for Fertilizer Production Enterprises
1) Temporary Transfer of Raw Material Stockpiles: Transfer of outdoor manure and straw stockpiles to the feed inlets of crushers and mixers, eliminating the need for fixed conveyor belts;
2) Auxiliary Feeding of Production Lines: Temporary transfer of fine powder from screening and drying/cooling sections, adaptable to temporary production line modifications;
3) Loading and Unloading of Trucks in the Factory Area: Unloading of bulk raw materials into storage, and direct loading of bagged finished fertilizers onto trucks for transport;
4) Simple Fertilizer Production Workshops in Small-Scale Livestock Cooperatives: Replaces manual shoveling and transportation due to variable site conditions and frequent workstation adjustments;
- Other Industry Scenarios
Grain storage, feed processing plants, small construction site sand and gravel transfer, and temporary sorting and loading/unloading of agricultural supplies.
Target Audience and Selection Recommendations
- Core Target Audience
1) Grain Storage and Processing Enterprises: Grain depots, drying towers, and feed mills require seasonal, high-frequency bulk grain loading and unloading;
2) Sand and Gravel Aggregate and Mining Enterprises: Quarries and manufactured sand plants require temporary transportation that frequently relocates as mining operations progress;
3) Logistics and Warehousing Enterprises: E-commerce warehouses, express delivery distribution centers, and third-party logistics providers require flexible loading and unloading across multiple vehicle positions and vehicle types;
4) Construction Enterprises: Earthwork projects and demolition projects require material lifting equipment that can be quickly deployed in confined spaces;
5) Ports and Freight Forwarding Enterprises: Bulk cargo terminals and barge operation areas require mobile supplementary equipment that works in conjunction with fixed loading and unloading lines.
- Key Selection Considerations
| Consideration Dimension | Selection Suggestions |
|---|---|
| Material Characteristics | For bulk materials (grain, gravel): adopt trough‑shaped idlers + rubber chevron belt; For packaged goods: adopt flat belt + parallel idlers |
| Movement Frequency | Frequent site transfer: inflatable tires + towing chassis; Infrequent movement: universal casters + lightweight aluminum frame |
| Lifting Mode | Heavy‑duty / frequent lifting: hydraulic cylinder; Light‑duty / low‑cost: manual screw rod |
| Power Configuration | Places with mains power: electric motor (0.75‑15kW); Field operation without power: gasoline / diesel engine drive |
| Environmental Adaptability | Grain industry: galvanized / stainless steel material for anti‑corrosion; Mining industry: thickened wear‑resistant rubber belt and heavy‑duty steel frame |
Application Technology of Mobile Belt Conveyor in Fertilizer Production Line
Production Line Connection Logic: Complete Fertilizer Main Line: Raw Material Warehouse → Fixed Belt Conveyor → Crusher → Mixer → Granulator → Dryer → Cooler → Coating Machine → Screening → Finished Product Warehouse
Mobile Belt Conveyor Connection Points:
1) Raw Material Stockpile → Mobile Belt Conveyor → Crusher Inlet (Temporary feeding for outdoor composting, can be moved at any time);
2) Screening Fine Powder Outlet → Mobile Belt Conveyor → Front-end Mixer (Fine powder is recycled for re-granulation, temporary setup without civil engineering);
3) Packaging Machine Outlet → Mobile Belt Conveyor → Truck Cargo Box (Flexible loading of bagged fertilizer, adaptable to different vehicle types and parking locations).
Common Faults, Causes, and Standardized Solutions
| Fault Phenomenon | Root Causes | Professional Solutions |
|---|---|---|
| Continuous belt deviation | 1. Head‑tail pulleys are not parallel; 2. Material feeding is off‑center; 3. One‑side idler is stuck; 4. Brake slightly slips without locking the frame | 1. Adjust tail screw tensioner to correct pulleys; 2. Extend feed chute for centered feeding; 3. Replace stuck idler; 4. Fasten wheel brake and lower stabilizing support legs |
| Belt slipping, pulley idling | 1. Insufficient belt tension; 2. Pulley covered with material dust; 3. Excessive feeding rate | 1. Adjust tail screw to increase tension; 2. Stop machine and clean pulley surface; 3. Lower feeding speed for uniform material supply |
| Material sliding down at large inclination angle | Belt without anti‑slip pattern, worn‑smooth belt surface, inclination angle exceeds 22° | Replace chevron anti‑slip belt, lower lifting bracket to reduce inclination angle |
| Whole machine pushing stuck, difficult steering | Material blocks trapped inside traveling wheels, lack of wheel‑axle lubrication, worn/deflated tires | Clear debris inside wheel assembly, inject grease for wheel axle, replace damaged tires |
| Hydraulic lifting fails to raise / lower | Insufficient hydraulic oil, cylinder seal leakage, hydraulic pump failure | Replenish hydraulic oil, replace oil seal, repair hydraulic power unit |
| Heavy & stuck manual lifting screw rod | Screw rod surface corrosion, adhered material dust | Clean screw rod caking deposits, apply anti‑rust lubricating grease |
Mobile belt conveyors are an organic combination of stationary belt conveyors and motorized chassis. Their core competitive advantages lie in their simple structure, lack of foundation requirements, immediate usability, and adjustable height, filling the gap in flexible conveying between fixed conveyor lines and temporary work sites. In fields such as grain storage, mining, logistics loading and unloading, and construction, mobile belt conveyors have become indispensable motorized conveying equipment by reducing manual handling, shortening material transfer distances, and improving loading and unloading efficiency. When selecting a model, key considerations should be given to frame rigidity, lifting method, tire/wheelset configuration, and belt material to ensure the equipment maintains reliability and durability under both frequent movement and continuous operation.
