Fold line-type multifunctional door post for truck body

Abstract

The invention discloses a fold line-type multifunctional door post for a truck body. The door post is arranged in the transverse center of the truck body, is used for connecting a roof and a underframe, is conformal to the truck body design limit outline and is of a broken-line-shaped structure; the door post is formed by welding an inner door post, an outer door post, a sealing plate and a baffleplate; wherein the inner door post and the outer door post are buckled and welded to form a plate folding and pressing outward-turning type cold bending groove structure, folded edges between the twosides of the inner door post and the outer door post are welded and reinforced through sealing plates, the baffle plate is vertically welded to the center of the sealing plate, and E-shaped grooves in the two sides of the cross section of the door post are formed. The door post makes full use of the side limit space of the vehicle; vehicle volume is increased, the transverse end face is in a Chinese character Ju shape, the structural space is fully facilitated, the width of the cross section of the door post is large, the height is small, the occupied space in the vehicle is small, the bending resistance is good, the bearing capacity is high, the E-shaped groove and the side door are matched to have the flow guide function, rainwater on the roof can be drained conveniently, and safety andreliability are achieved.

Description

technical field [0001] The invention belongs to the technical field of railway vehicle mechanical design, in particular to the technical field of railway vehicle body structure design, in particular to a broken-line multifunctional doorpost structure constituting the railway vehicle structure. Background technique [0002] my country's P66K and P70A movable side wall boxcars use a C-shaped section with a section width of about 200 mm as a straight channel steel as the door post, which is placed on the middle floor of the car body to support the roof. The height of the door post directly determines the roof. When there is an error in the height of the door post, it will cause difficulties in the assembly of the roof or even rework. When designing a box car with side-opening door and movable side wall with larger volume and larger door opening, it is necessary to use a kind of outline that is close to and basically parallel to the upper limit of the rolling stock, has good manu...

AI Technical Summary

Problems solved by technology

[0002] my country's P66K and P70A movable side wall boxcars use a C-shaped section with a section width of about 200 mm as a straight channel steel as the door post, which is placed on the middle floor of the car body to support the roof. The height of the door post directly determines the roof. When there is an error in the height of the doorpost, it will cause difficulty in roof assembly or even rework

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