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Conveyor and manufacture method thereof

A manufacturing method and conveyor technology, which is applied in the field of conveyors, can solve problems such as difficulty in forming, achieve the effect of suppressing torsion, and improve the effect of suppressing torsion

Active Publication Date: 2012-01-11
HITACHI LTD
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  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

In the case of roll forming, with respect to all surfaces of the steel that can be constrained by the roll, when the object to be bent is an L-shaped steel, when the object to be bent is a hollow-shaped steel, unless a mandrel, etc. is used Otherwise, it will be restricted only from the outer surface, and it will be difficult to obtain correct forming

Method used

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  • Conveyor and manufacture method thereof
  • Conveyor and manufacture method thereof
  • Conveyor and manufacture method thereof

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Embodiment Construction

[0051] Hereinafter, the embodiment of the conveyor of this invention and its manufacturing method is demonstrated in detail based on drawing. figure 1 The structure of the usual escalator 1 is shown. exist figure 1 Among them, (a) is a diagram showing the overall structure, and (b) is an enlarged diagram of a part of (a), that is, a staircase.

[0052] exist figure 1 Among them, as shown in (a), along the escalator 1, there is a large framework called a frame 21 supporting the structure of the escalator 1. When using the electric power supplied from the control panel 2 to drive the motor (not shown), then by The drive gear 3 rotated by the motor pulls the steps 4 to make the steps 4 run on the step running track 5 . The stair running track 5 is arranged circularly along the escalator 1 , so the steps 4 circulate because they run on the stair running track 5 . The structure of the ladder running track 5 includes: the outbound side track 51 on which the stairs 41 on the side...

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Abstract

The invention provides a conveyor and a manufacture method thereof, so that soft roll forming is realized, the bending machining with restraints only from the outer side is achieved without generation of torsion, in-plane corrugation and in-plane buckling, and therefore a curve part of a stepped operating track for a conveyor is small in weight and highly precise in shape. The curve part of the stepped operating track is formed by a stepped operating track (5C) with at least one of a short side and a long side having a hollow structure, thereby realizing that the weight of the conveyor is small. The wall of the hollow structure is provided with an opening part (17), which is mounted to a frame (21) via through bolts (22) at appropriate intervals. A roller for preparing the curve part of the stepped operating track with the hollow structure is made in such a shape as to prohibit the deformation which is caused by concentration of stress generated by corners of the stepped operation track during the bending machining.

Description

technical field [0001] The present invention relates to a conveyor provided with a stepped running track for circulating steps and a method for manufacturing the same. Background technique [0002] Conveyors such as escalators have a large skeleton called a frame, and have a structure in which steps circulate around the frame. The steps circulate on the stair running track, and the stair running track is formed by a straight line part and a curved line part. [0003] The curved portion of the conventional stairway running track is made of L-shaped steel (for example, refer to Patent Document 1). Stretch bending is usually used as the production method of the curved part of the ladder running track. [0004] Several forming methods can be considered as the bending forming method of the L-shaped section steel. In the case of roll forming, with respect to all surfaces of the steel that can be constrained by the rolls, when the object to be bent is an L-shaped steel, when the...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B66B23/00B21C23/00B21D5/08
Inventor 村里有纪牧山高大上野恵尉五味雅志宇津宫博文
Owner HITACHI LTD
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