Rain covers are also referred to as protective covers, color-coated steel covers, conveyor rain covers, conveyor dust covers, belt conveyor covers, and similar terms. These covers are primarily utilized in power plants, cement factories, steelworks, chemical plants, coal mines, ports, docks, mining enterprises, and similar industrial settings. Rain covers play a vital role in protecting both the transported cargo and the surrounding environment; during the conveying process, they significantly reduce material loss and waste while ensuring safer and more reliable operation of the conveyor belt. Furthermore, they effectively extend the service life of the conveyor system itself.

1. Styles

Rain covers are available in three main styles: fixed, openable, and those featuring observation windows. The observation-window style allows for clear visual monitoring of the cargo during transit and enables operators to verify that the conveyor belt is running normally. Additionally, there are “belt-deviation covers,” which provide rain and dust protection specifically for conveyors equipped with belt-deviation switches. The primary color options for these rain covers include marine blue, light gray, and red.

2. Advantages of Rain Covers
   Six Key Features

I. Among the four available forms of conveyor covers, both the fixed covers and the openable covers are fabricated from galvanized corrugated steel sheets or color-coated steel sheets. Typically, for every ten cover sections, a configuration of nine fixed covers and one openable cover is adopted; alternatively, the two types of covers may be arranged in an alternating pattern. During installation, the openable cover is positioned to overlap the two adjacent fixed covers on its left and right sides, with an overlap length equivalent to one or two corrugation pitches. It is crucial to ensure that the hinged side of the openable cover is positioned on the non-walkway side of the conveyor, while the side featuring the latch mechanism is positioned on the walkway side.

II. The structural framework (skeleton) for the fixed conveyor covers consists of connecting angle steel or Z-beams, the length of which corresponds precisely to the installation length of the conveyor cover section. These connecting angle steels or Z-beams are welded directly onto the channel beams or smaller angle steels located on both sides of the conveyor frame. In instances where supporting angle steels are required for additional reinforcement, these supports are first welded to the sides of the conveyor frame, after which the connecting angle steels or Z-beams are welded onto the supporting angle steels. III. Install the rain covers from one end of the conveyor frame to the other in a staggered (“pin”-shaped) pattern. During installation, standing on the rain covers is strictly prohibited; do not subject them to forceful impact or hammering.

IV. Secure the rain covers to the connecting angle steel or Z-beams using self-tapping screws, ensuring a minimum of four fastening points per cover sheet.

V. An inspection-type rain cover may be installed every 10 sheets to facilitate maintenance and visual inspection.

VI. Hinge-point covers are designed exclusively for use at the hinge points within the convex arc sections of the conveyor; conversely, belt-misalignment switch covers are specifically designed to enclose the misalignment switches. Both types are installed over the standard fixed rain covers.

2.1 Features of the Rain Covers

1. The rain cover sheets feature a “Model 900” small-corrugation profile; after accounting for overlaps, the effective coverage width reaches 900 mm.
2. These rain covers are suitable for conveyor belts ranging in width from B500 to B3000; custom-shaped rain covers can also be manufactured to meet specific client requirements.
3. The rain covers are fabricated from colored steel plate, galvanized steel plate, or stainless steel plate, with a material thickness ranging from 0.45 mm to 0.8 mm.
4. The effective coverage width of these rain covers exceeds that of comparable products in the industry by 40 mm to 60 mm.