JPH0373351U

JPH0373351U -

Info

Publication number: JPH0373351U
Application number: JP13513589U
Authority: JP
Priority date: 1989-11-21
Filing date: 1989-11-21
Publication date: 1991-07-24
Anticipated expiration: 2004-11-21
Also published as: JPH0730824Y2

Description

[Brief explanation of the drawing]

図面は本考案の一実施例を示すもので、第１図
はマンホールの縦断面図、第２図は使用部品の分
解斜視図、第３図は足場装置の平面図、第４図は
同側面図、第５図はマンホールの横断面図である
。１０……マンホールを構成する縦孔、１１〜１
４……昇降用ステツプ、２０……足場装置、３０
……屑受袋、４０……載置板、４１，４２……分
割板、５０，６０……支持脚、７０……連結部材
、８０……調節部材、１３０，１３１……軟質ゴ
ム、１５０……落下防止装置。 The drawings show one embodiment of the present invention; Fig. 1 is a longitudinal cross-sectional view of a manhole, Fig. 2 is an exploded perspective view of used parts, Fig. 3 is a plan view of the scaffolding device, and Fig. 4 is a side view of the same. FIG. 5 is a cross-sectional view of the manhole. 10... Vertical hole that constitutes a manhole, 11-1
4... Lifting step, 20... Scaffolding device, 30
... Debris bag, 40 ... Placement plate, 41, 42 ... Division plate, 50, 60 ... Support leg, 70 ... Connection member, 80 ... Adjustment member, 130, 131 ... Soft rubber, 150 ...Fall prevention device.

Claims

[Claims for Utility Model Registration] (1) A removable scaffolding device that is fixed midway up the height of the vertical hole constituting the manhole by frictional resistance with the circular inner peripheral surface thereof, and the upper surface of this mounting plate. 1. A temporary scaffolding structure in a manhole, characterized in that the bottom is placed on a waste receiving bag, and the upper surface is opened circularly along the circular inner circumferential surface of the vertical hole. (2) Claim (1) characterized in that a circular mounting plate that conforms to the circular inner peripheral surface of the vertical hole of the manhole is arranged between the top surface of the mounting plate and the bottom of the waste receiving bag. Temporary scaffolding structure inside a manhole. (3) The scaffolding device is located between a pair of left and right supporting legs facing each other in a V-shape, one end of both supporting legs that approaches each other, and the other end of both supporting legs that are spaced apart from each other. a connecting member that connects the opening degree so as to be adjustable;
Claim (1) or (2), characterized in that the opening adjustment member is located between the other end portions of both support legs and connects the support legs so that the distance between them facing each other can be adjusted. Temporary scaffolding structure inside the manhole described. (4) Claim (3) characterized in that the lower surfaces of the ends of the supporting legs of the scaffolding device that are close to each other are placed and fixed on a step that projects into the vertical hole of the manhole. Temporary scaffolding structure inside a manhole. (5) The temporary scaffolding device in a manhole according to claim (4), characterized in that the scaffolding device is provided with a fall prevention device that hooks onto a step in the manhole. (6) Place the lower surfaces of one end of both supporting legs of the scaffold device that are close to each other on the step that protrudes into the vertical hole of the manhole, and place the other ends of both supporting legs that are separated from each other at the height of the manhole. 4. The temporary scaffold structure in a manhole according to claim 3, wherein the scaffold structure is tilted upward in the direction and fixed in the vertical hole of the manhole. (7) The mounting plate is composed of two semicircular divided plates, and the ends of the two divided plates are partially overlapped vertically on the upper surface of both support legs inclined in the height direction of the manhole. 7. The temporary scaffolding structure in a manhole according to claim 6, wherein the scaffolding structure is placed so as to be aligned with each other. (8) Claim (3) characterized in that an elastic material is fixed to each of the four ends of both support legs of the scaffolding device.
The temporary scaffolding structure in a manhole according to any one of (7) to (7). (9) Claims (3) to (8) characterized in that the lengths of both supporting legs of the scaffolding device are adjustable.
A temporary scaffolding structure in a manhole according to any one of the above. (10) Claim (3) characterized in that the mutually opposing ends of both supporting legs of the scaffolding device are respectively inclined in a V-shape in plan along the circular inner peripheral surface of the vertical hole of the manhole. ) - (9) The manhole scaffolding structure according to any one of (9). (11) Claim (6) characterized in that each end of both support legs of the scaffolding device is inclined in the height direction along the circular inner peripheral surface of the vertical hole of the manhole.
The temporary scaffolding structure in a manhole according to any one of (10) to (10).