Fall prevention structure for cable laying support materials

Abstract

This reduces the time and effort required for inspection work to prevent cable support materials installed inside tunnels from falling. [Solution] The cable laying support material (1) includes a mounting part (11) that is attached to a wall surface (2) and a support part (12) that stands horizontally against the wall surface and supports the cable (3) when attached to the wall surface. The mounting part of the cable laying support material (1) is pressed against the wall surface by a first bolt (4) that extends from the wall surface through the mounting part and through a groove (13) that extends in the longitudinal direction of the mounting part, a first nut (6) that is screwed onto the first bolt, and a retaining plate (7) that is placed between the mounting part and the first nut. A guide member (9) is pressed against the wall surface by a second bolt (5) that extends from a position lower than the position from which the first bolt extends on the wall surface and through the groove of the mounting part, and a second nut (8) that is screwed onto the second bolt, thereby restricting the movement of the mounting part in the width direction and away from the wall surface, while allowing the movement of the mounting part in the longitudinal direction.

Claims

1. A cable laying support material comprising a mounting portion that is attached to a wall surface and a support portion that, when attached to the wall surface, stands horizontally relative to the wall surface and supports the cable, wherein the mounting portion of the cable laying support material is pressed against the wall surface by a first bolt extending from the wall surface through a groove that passes through the mounting portion and extends in the longitudinal direction of the mounting portion, a first nut that is screwed onto the first bolt, and a retaining plate positioned between the mounting portion and the first nut. A fall prevention structure characterized by a second bolt extending from a position lower than the position from which the first bolt extends on the wall surface and passing through a groove in the mounting portion, and a second nut screwed onto the second bolt, thereby pressing a guide member against the wall surface that restricts movement of the mounting portion in the width direction and away from the wall surface, while allowing movement of the mounting portion in the longitudinal direction.

2. The fall prevention structure according to claim 1, wherein the guide member has a pair of side plates that stand upright relative to the wall when pressed against the wall, and a top plate that spans the pair of side plates, the pair of side plates are arranged in a state in contact with the longitudinal edge of the mounting portion, and the top plate is positioned above the mounting portion.

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