An aircraft landing gear assembly including structural members coupled via a coupling including a bearing. The bearing has a body defining a first bearing surface arranged to contact a first counter-face of the coupling. The first bearing surface is defined by a first tubular layer of fibre reinforced polymer of a first type having an axis and containing synthetic fibres of a first type wound around and along the axis of the bearing. The bearing body further has a second tubular layer of fibre reinforced polymer of a second type containing synthetic fibres of a second type wound around and along the axis of the bearing.

A conveying roller, a conveyor device, and an inclined conveyor for objects. A conveying roller comes into contact with an object and moves the object, the conveying roller including: a core member and a plurality of blade-shaped pieces, the blade-shaped piece being elastically deformable and being provided around the core member.

A conveying roller, a conveyor device, and an inclined conveyor for objects. A conveying roller comes into contact with an object and moves the object, the conveying roller including: a core member and a plurality of blade-shaped pieces, the blade-shaped piece being elastically deformable and being provided around the core member.

A rolling member includes a rolling shaft; rolling wheels fixed to two ends of the rolling shaft, rolling surfaces of the rolling wheels being sleeved with flexible loops respectively; at least one first engagement structure provided on a rolling surface of each rolling wheel; at least one second engagement structure provided on a surface of each flexible loop facing toward the rolling surface of the rolling wheel; wherein the at least one first engagement structure engages with the at least one second engagement structure.

A rolling member includes a rolling shaft; rolling wheels fixed to two ends of the rolling shaft, rolling surfaces of the rolling wheels being sleeved with flexible loops respectively; at least one first engagement structure provided on a rolling surface of each rolling wheel; at least one second engagement structure provided on a surface of each flexible loop facing toward the rolling surface of the rolling wheel; wherein the at least one first engagement structure engages with the at least one second engagement structure.

The present disclosure provides a roller and a locking method thereof. The roller includes a main body, a first groove provided on an inner surface of the main body, and a first elastic component fitted with the first groove; wherein a through hole for receiving and fixing a shaft is provided on the first elastic component. The present disclosure can be used to lock shafts.

A transporter includes: a first conveyor to receive an object, the first conveyor to convey the object in a first direction; and a second conveyor to receive the object from the first conveyor and to convey the object, the second conveyor being movable in position in a second direction that crosses the first direction, the second direction being a substantially vertical direction.

A transporter includes: a first conveyor to receive an object, the first conveyor to convey the object in a first direction; and a second conveyor to receive the object from the first conveyor and to convey the object, the second conveyor being movable in position in a second direction that crosses the first direction, the second direction being a substantially vertical direction.

A conveying installation has a conveying belt and also has drums, loadbearing rollers and loadbearing frameworks. The conveying installation forms a material-conveying upper strand with a supply location for the conveying material and a mostly material-free lower strand. At least one drum and/or at least one loadbearing roller have/has a drum cover, which contains at least one layer composed of a foamed polymer mix.

A conveying installation has a conveying belt and also has drums, loadbearing rollers and loadbearing frameworks. The conveying installation forms a material-conveying upper strand with a supply location for the conveying material and a mostly material-free lower strand. At least one drum and/or at least one loadbearing roller have/has a drum cover, which contains at least one layer composed of a foamed polymer mix.