There are several types of transportation belts commonly used for moving goods and materials. Some of the main types include:

1. Conveyor belts: These are continuous moving belts that are often made of rubber or fabric. They are used in industries such as mining, manufacturing, and logistics to transport items from one location to another. Conveyor belts can be flat or have a variety of special designs, such as cleats or ribbed surfaces, to assist with moving specific types of materials. 2. Timing belts: These belts have teeth on the inner surface that engage with corresponding teeth on gears or pulleys. Timing belts are commonly used in engines and machinery to synchronize the rotation of different components. They are essential for precise timing and smooth operation. 3. V-belts: These belts have a trapezoidal cross-section and are commonly used in power transmission systems. V-belts transmit power and torque between two rotating shafts by wedging into the groove of a V-shaped pulley. They are widely used in applications such as engines, pumps, and HVAC systems. 4. Flat belts: As the name suggests, these belts have a flat, rectangular cross-section. They are commonly made of materials such as rubber, leather, or fabric. Flat belts are used for power transmission in various industries like textiles, printing, woodworking, and packaging. 5. Round belts: Round belts are typically made of elastic materials like rubber or polyurethane. They form a continuous loop and are commonly used in applications that require a flexible and lightweight belt for transferring rotary motion, such as in machinery, exercise equipment, and conveyors. 6. Ribbed belts: Also known as multi-V belts, ribbed belts have a longitudinally ribbed surface resembling multiple V-shaped grooves. They provide high traction and are often used in applications where power needs to be transferred efficiently, such as automotive engines, appliances, and industrial machinery. These are just a few examples of transportation belts, and there are other specialized types available for specific applications, depending on the requirements of the industry or machinery in use.