Apparatus for correcting upward deformation of large member of stainless steel car roof

Abstract

The utility model provides an apparatus for correcting upwarp deformation of a large member of a stainless steel car roof, being characterized in that, it has a crossbeam, end support columns, a middle support column, an arc-shaped positioning body, crossbeam pull rings, a thin steel taut strap, and tighteners. The end support columns, crossbeam, and middle support column constitute a supporting part, the arc-shaped positioning body having the same arc shape as an inner arc of the large member of the stainless steel car roof is arranged on the middle support column. The thin steel taut strap covers an exterior contour surface of the large member of the stainless steel car roof, and is connected via the tightener to the crossbeam pull rings respectively fixed at two ends of the crossbeam.

Claims

1. An apparatus for correcting upwarp deformation of a large member of a stainless steel car roof, the apparatus comprising a crossbeam, end support columns, a middle support column, an arc-shaped positioning body, crossbeam pull rings, a thin steel taut strap, and tighteners, the end support columns, the crossbeam, and the middle support column constituting a supporting part, the arc-shaped positioning body being configured to support an arc inner surface of the large member and having the same arc shape as an inner arc of the large member of the stainless steel car roof and being arranged on the middle support column, the thin steel taut strap configured to cover an exterior contour surface of the large member of the stainless steel car roof, and being connected via the tighteners to the crossbeam pull rings respectively fixed at two ends of the crossbeam, and the apparatus further comprises support blocks respectively mounted on upper portions of the end support columns to support side beams of the large member of the stainless steel car roof located at either end of the large member.

2. The apparatus for correcting upwarp deformation of a large member of a stainless steel car roof according to claim 1, further comprising wood blocks each configured to be disposed between a corresponding one of the side beams of the large member of the stainless steel car roof and the thin steel taut strap to prevent compression deformation.

Description

BRIEF DESCRIPTION OF THE DRAWINGS

(1) FIG. 1 is a diagram showing a whole structure of the apparatus for correcting upwarp deformation of a large member of a stainless steel car roof, under working state, according to the present utility model.

DETAILED DESCRIPTION OF PREFERRED EMBODIMENTS

(2) With reference to FIG. 1, a crossbeam 1 is fixed onto the ground, and end support columns 2, a middle support column 3 and crossbeam pull rings 7 are welded and fixed on the crossbeam 1. Support blocks 4 are respectively mounted on upper portions of the end support columns 2 to support side beams 12 located at end of a large member 11 of a stainless steel car roof. An arc-shaped positioning body 5, having the same arc shape as an inner arc of the large member 11 of the stainless steel car roof, is mounted on an upper portion of the middle support column 3 so as to support an arc inner surface of the large member 11 of the stainless steel car roof. The arc-shaped positioning body 5 and the middle support column 3 are clamped by using a clip block 6 and fixed by using bolts. A circular hole is formed in the surface of the arc-shaped positioning body 5 to reduce weight thereof. The large member 11 of the stainless steel car roof is placed on the arc-shaped positioning body 5 and the support blocks 4, the thin steel taut strap 8 covers an exterior contour surface of the large member 11 of the stainless steel car roof, and wood blocks 10 underlay the side beams 12 of the large member 11 of the stainless steel car roof to prevent compression deformation. Hooks of the tightener 9 (corresponding to a chain block) are used to hook the thin steel taut strap 8 and the crossbeam pull rings 7, and a pull-down force is generated by moving reciprocally an operation lever of the tightener 9 so as to pull the thin steel taut strap downwardly. Since the pull-down force causes a portion of the large member 11 of the stainless steel car roof that has upwardly warped and deformed to be displaced downwardly, until the portion of the large member 11 of the stainless steel car roof that has upwardly warped and deformed fits in with the arc-shaped positioning body 5, thereby achieving accurate restoration of sizes such as the arc shape of the car roof and the car width while achieving correction of deformation.