Fold line type large-opening-degree sliding side door

Abstract

The invention discloses a fold line type large-opening-degree sliding side door, which belongs to the technical field of railway transportation. The fold line type large-opening-degree sliding side door comprises a door body and a matched vehicle body door frame, wherein the door body is of a hollow structure. The outline of the cross section of the upper side portion of the door body is in a foldline shape, and the lower side portion of the door body protrudes outwards. The fold line type large-opening-degree sliding side door also comprises an upper pulley device and a lower pulley device arranged on the two sides of the door body respectively. The door body is driven by the upper pulley device and the lower pulley device to do opening and closing motion in the longitudinal direction ofthe vehicle body door frame. The limiting device and the supporting device are arranged on the door body, and the longitudinal movement and the transverse movement of the door body are limited through the limiting device and the supporting device respectively, so that the purposes of improving the opening degree of the door of the rail wagon, improving the loading and unloading efficiency of goods and meanwhile, conducting lightweight design on the door to improve the operation convenience of the door are achieved.

Description

technical field [0001] The invention belongs to the technical field of railway transportation, and in particular relates to a zigzag type large-opening sliding side door. Background technique [0002] my country's P66K and P70A boxcars with movable side walls use steel plug doors and sliding doors to form movable side walls. Each door is about 3.5m long. m. For the railway box car undertaking the railway express business, the larger the opening of the door hole, the larger the loading and unloading operation area, and the higher the loading and unloading efficiency. [0003] For the current railway wagons, if we want to continue to increase the size of the door hole, we need to increase the length or width of the door accordingly. Due to the high density of steel, the door will be very heavy after the size is increased, and it is inconvenient to open and close. Therefore, it is necessary to study A door with a larger size and a relatively light weight, which is used to incr...

AI Technical Summary

Problems solved by technology

[0003] For the current railway wagons, if we want to continue to increase the size of the door hole, we need to increase the length or width of the door accordingly. Due to the high density of steel, the door will be very heavy after the size is increased, and it is inconvenient to open and close. Therefore, it is necessary to study A door with a larger size and relatively light weight, which is used to increase the door opening of the movable side wall car and improve the loading and unloading efficiency of cargo

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