Wheel Conveyor

The wheel conveyor is a material-handling device used in poultry slaughtering and processing plants. As defined by the terminology standard for livestock and poultry slaughtering equipment, it refers to a conveyor that conveys materials by means of wheels mounted on a frame. In poultry processing operations, this equipment is primarily responsible for receiving and transferring live poultry cages, conveying turnover boxes of cut poultry parts, and linking packaging and finished-product logistics. Its lightweight wheel structure, low sliding resistance for materials, and ease of washdown make it widely used for short-distance transfers between workstations in slaughterhouses.

Structural Features and Working Principle

A wheel conveyor consists of a frame, wheels (also referred to as skate wheels) mounted on the frame at defined intervals, and side guards. Wheels are typically cylindrical or barrel-shaped, made of stainless steel, engineering plastics (such as nylon or POM), or galvanized steel, with rolling bearings inside to reduce friction. Unlike roller conveyors, wheel conveyors feature wider wheel spacing and smaller wheel diameters, making them suitable for conveying items with flat, rigid bottoms such as poultry cages, turnover boxes, and trays. By drive type, they are classified as gravity wheel conveyors and powered wheel conveyors. Gravity wheel conveyors rely on manual pushing or inclined gravity flow, featuring a simple structure with no electrical components, and are commonly used in live poultry receiving areas and workstation buffer sections. Powered wheel conveyors drive wheels via chain or belt transmission, suited for longer-distance conveying integrated with automated production lines.

Typical Applications in Poultry Slaughtering

In poultry slaughtering operations, wheel conveyors appear at the following stages: the live poultry receiving area, where gravity wheel sections serve as buffer platforms for poultry cages unloaded from transport vehicles, allowing operators to push cages to the hanging station with less effort due to the rolling friction characteristics of the wheels; the cutting and trimming section, for transporting turnover boxes or trays holding cut poultry parts, with wheel gaps allowing washdown water and debris to fall through and maintain station hygiene; and the packaging and finished-product section, receiving weighed and packaged poultry cases for transfer to metal detection, labeling, or cold-storage entry points. Compared with belt conveyors, wheel conveyors handle rigid containers such as poultry cages and turnover boxes more smoothly, and the open structure facilitates routine washing and sanitizing in compliance with slaughterhouse hygiene requirements.

Selection and Hygienic Design Considerations

When procuring a wheel conveyor, confirm that wheels and frame surfaces in contact with materials are made of food-grade stainless steel or engineering plastics compliant with food-contact requirements. Wheel end bearings should preferably use sealed structures or plastic end caps to prevent washdown water and debris from entering and causing jamming. Wheel spacing should be determined by the bottom dimensions of conveyed items to ensure cages or boxes do not fall between wheels. For heavy-duty poultry cage wheel sections in the live receiving area, load capacity and axle impact resistance are key considerations; for cutting and packaging areas, wheel surface smoothness and cleaning accessibility should be prioritized. Equipment should comply with the general safety and hygiene requirements for conveying equipment specified in GB/T 42121-2022 Livestock and poultry slaughtering and processing equipment—Conveyor equipment for poultry slaughtering and processing. Routine maintenance should focus on checking wheel rotation freedom, confirming bearing seal condition, and removing residue from wheel surfaces, with flushing and sanitizing performed after each shift