A freezing spiral net chain structure includes a plurality of chain links successively arranged in a travelling direction of a rail. Transmission teeth are arranged at inner ends of the chain links. Engagement teeth are arranged at two sides of the chain links. The engagement teeth of the adjacent chain links are engaged with each other. Axial holes are disposed between the mutually engaged engagement teeth. Rotary shafts are inserted into the axial holes. A metal piece is connected between outer ends of every two adjacent rotary shafts. The metal piece may bear a load from an outer-end spiral net, and since a coefficient of expansion of metal is smaller than that of plastic, deformation between the adjacent rotary shafts as a result of cold shrinking is reduced. The metal piece is different from the rotary shafts of the plastic spiral conveying net chain in terms of pitch.

A freezing spiral net chain structure includes a plurality of chain links successively arranged in a travelling direction of a rail. Transmission teeth are arranged at inner ends of the chain links. Engagement teeth are arranged at two sides of the chain links. The engagement teeth of the adjacent chain links are engaged with each other. Axial holes are disposed between the mutually engaged engagement teeth. Rotary shafts are inserted into the axial holes. A metal piece is connected between outer ends of every two adjacent rotary shafts. The metal piece may bear a load from an outer-end spiral net, and since a coefficient of expansion of metal is smaller than that of plastic, deformation between the adjacent rotary shafts as a result of cold shrinking is reduced. The metal piece is different from the rotary shafts of the plastic spiral conveying net chain in terms of pitch.

A belting connection for attaching a first end and a second end of belting. The belting has a thickness. The belting connection mechanism includes a first stepped region, a second stepped region and a first fastener. The first stepped region is proximate the first end. The first stepped region has a first aperture formed therein. The first stepped region has a first thickness. The second stepped region is proximate the second end. The second stepped region has a second aperture formed therein. The second stepped region has a second thickness. The first fastener extends through the first aperture and the second aperture to attach the first end to the second end. The first stepped region at least partially overlaps the second stepped region when the first end is attached to the second end. When the first end is attached to the second end, the first stepped region and the second stepped region have a combined thickness that is no greater than the thickness of the belting.

A vehicle production assembly includes a discontinuous conveyor system to support a vehicle. The conveyor system includes a first side conveyor chain, a second side conveyor chain, and a plurality of middle conveyor chains longitudinally spaced between the first and second conveyor chains. The conveyor chains can be mechanically synchronized with a single motor.

A vehicle production assembly line includes a conveyor system to support a vehicle. The conveyor system includes a first side conveyor chain, a second side conveyor chain, and a middle conveyor chain positioned between the first side conveyor chain and the second side conveyor chain. The first side conveyor chain, the second side conveyor chain, and the middle conveyor chain are laterally aligned with each other and can be mechanically synchronized with a single motor.

A belting connection for attaching a first end and a second end of belting. The belting has a thickness. The belting connection mechanism includes a first stepped region, a second stepped region and a first fastener. The first stepped region is proximate the first end. The first stepped region has a first aperture formed therein. The first stepped region has a first thickness. The second stepped region is proximate the second end. The second stepped region has a second aperture formed therein. The second stepped region has a second thickness. The first fastener extends through the first aperture and the second aperture to attach the first end to the second end. The first stepped region at least partially overlaps the second stepped region when the first end is attached to the second end. When the first end is attached to the second end, the first stepped region and the second stepped region have a combined thickness that is no greater than the thickness of the belting.

A conveyor system for controlling two conveyor belts with a single motor including a belt link for removing material from between the run and the return portions of a conveyor belt moving along a first trajectory.

A vehicle production assembly line includes a conveyor system to support a vehicle. The conveyor system includes a first side conveyor chain, a second side conveyor chain, and a middle conveyor chain positioned between the first side conveyor chain and the second side conveyor chain. The first side conveyor chain, the second side conveyor chain, and the middle conveyor chain are laterally aligned with each other and can be mechanically synchronized with a single motor.

A vehicle production assembly includes a discontinuous conveyor system to support a vehicle. The conveyor system includes a first side conveyor chain, a second side conveyor chain, and a plurality of middle conveyor chains longitudinally spaced between the first and second conveyor chains. The conveyor chains can be mechanically synchronized with a single motor.