Abstract: A boarding bridge walking mechanism with a safety protection apparatus, the safety protection apparatus includes an inner retainer mechanism, an outer retainer mechanism, a connecting mechanism and an induction and control mechanism. The inner retainer mechanism includes an inner bracket and a first universal wheel. The outer retainer mechanism includes an outer bracket. The outer bracket is disposed on the outer circumference of the inner bracket, and a lower end of the outer bracket is lower than a lower end of the inner bracket. The connecting mechanism includes a first connecting component. The first connecting component is connected between the inner bracket and the outer bracket, such that the inner bracket is hinged with the outer bracket. The induction and control mechanism includes an induction unit.

Abstract: The present disclosure provides a safety protection apparatus of a boarding bridge walking mechanism, the safety protection apparatus includes an inner retainer mechanism, an outer retainer mechanism, a connecting mechanism and an induction and control mechanism. The inner retainer mechanism includes an inner bracket and a first universal wheel. The outer retainer mechanism includes an outer bracket. The outer bracket is disposed on the outer circumference of the inner bracket, and a lower end of the outer bracket is lower than a lower end of the inner bracket. The connecting mechanism includes a first connecting component. The first connecting component is connected between the inner bracket and the outer bracket, such that the inner bracket is hinged with the outer bracket. The induction and control mechanism includes an induction unit.

Abstract: The invention provides a new-style tonneau cover, wherein comprises a cover plate body matching the rear truck bed. The cover plate body is a three-layer structure, comprising an outer layer, an intermediate layer and an inner layer from the exterior to the interior. The outer layer is made of polyurethane foam mixed with glass fiber; the intermediate layer is made of polyurethane foam and the inner layer is made of resin; the density of polyurethane foam in the intermediate layer is lower than that in the outer layer; polyurethane foam is light in weight and high in specific strength. In this invention, the cover plate body is made of three different layers so that the cover is light in weight and high in strength, taking up less room of the rear truck bed, better for free opening and closing operation.

Abstract: The invention provides a new-style tonneau cover, wherein comprises a cover plate body matching the rear truck bed. The cover plate body is a three-layer structure, comprising an outer layer, an intermediate layer and an inner layer from the exterior to the interior. The outer layer is made of polyurethane foam mixed with glass fiber; the intermediate layer is made of polyurethane foam and the inner layer is made of resin; the density of polyurethane foam in the intermediate layer is lower than that in the outer layer; polyurethane foam is light in weight and high in specific strength. In this invention, the cover plate body is made of three different layers so that the cover is light in weight and high in strength, taking up less room of the rear truck bed, better for free opening and closing operation.

Abstract: The invention belongs to the field of automobile parts, in particular, to a tonneau cover installed on the notchback (pickup) for covering and closing the rear truck bed. The tonneau covers of current vehicles are either too thick or heavy so it influences the flexibility of opening and closing and its requirements to the actuating mechanism are high; its thickness is large; and it occupies more of the already limited room of rear truck bed. This invention provides a truck bed back cover which occupies less rear truck bed room and is strong in strength, flexible in opening and closing and excellent in operating performance. It consists of the cover plate body which matches with the rear truck bed and is made of base materials. The base material is glass fiber reinforced polyurethane. The cover plate body is provided with an integral structure framework. The framework makes the cover plate body form protruding arises on the surface of the side facing to the truck bed.

Abstract: The invention belongs to the field of automobile parts, in particular, to a tonneau cover installed on the notchback (pickup) for covering and closing the rear truck bed. The tonneau covers of current vehicles are either too thick or heavy so it influences the flexibility of opening and closing and its requirements to the actuating mechanism are high; its thickness is large; and it occupies more of the already limited room of rear truck bed. This invention provides a truck bed back cover which occupies less rear truck bed room and is strong in strength, flexible in opening and closing and excellent in operating performance. It consists of the cover plate body which matches with the rear truck bed and is made of base materials. The base material is glass fiber reinforced polyurethane. The cover plate body is provided with an integral structure framework. The framework makes the cover plate body form protruding arrises on the surface of the side facing to the truck bed.