JPS6214100U

JPS6214100U -

Info

Publication number: JPS6214100U
Application number: JP10482485U
Authority: JP
Priority date: 1985-07-11
Filing date: 1985-07-11
Publication date: 1987-01-28
Also published as: JPH0430320Y2

Description

[Brief explanation of the drawing]

第１図は使用状態の側面図、第２図はその正面
図、第３図は第１図線における縦断面図で分
離状態を示す、第４図は一部切欠正面図、第５図
は巻揚状態の正面説明図、第６図は一部の斜面図
である。１…ドラム、２…リブ、３…ブレーキシユー、
４…ブレーキドラム、５…回転円板、６…支軸、
７…ハンドル、８…ラチエツトホイール、９…ブ
ラケツト、１０…操作レバー、１１…爪、１２，
１３…ピン、１４，１５…バネ、１６…ストツパ
。 Figure 1 is a side view of the state in use, Figure 2 is its front view, Figure 3 is a vertical sectional view taken along the line of Figure 1 and shows the separated state, Figure 4 is a partially cutaway front view, and Figure 5 is a front view. A front explanatory view of the hoisting state, and FIG. 6 is a partial slope view. 1...drum, 2...rib, 3...brake shoe,
4... Brake drum, 5... Rotating disc, 6... Support shaft,
7...Handle, 8...Ratchet wheel, 9...Bracket, 10...Operation lever, 11...Claw, 12,
13...pin, 14,15...spring, 16...stopper.

Claims

[Claims for Utility Model Registration] 1. A cable B connected to a telescopic ladder A, and a cable B connected to the telescopic ladder A.
In this ladder lifting device, a plurality of ribs 2 co-rotating with the drum 1 are provided radially at intervals, and a brake seat is installed between each of the ribs 2. A ladder lifting/lowering device characterized in that a brake drum 4 is fixedly disposed to suppress movement of the brake shoe 3 which moves toward the outer circumference due to centrifugal force due to the rotation of the rib 2. 2. The scope of the utility model registration claim, in which the ribs 2 are radially protruding from the rotary disk 5 as partition walls and attached to the drum 1, and form a plurality of fan-shaped space portions 2'. The ladder lifting device according to item 1. 3. The brake shoe 3 is made of a fan-shaped metal plate, and a plurality of plates are stacked between the ribs 2, 2, and the arc circumferential surface of the metal plate can be brought into contact with and separated from the cylindrical brake drum. A ladder lifting device according to claim 1 or 2, which is installed in a utility model. 4. The brake drum 4 is constituted by a case formed of a cylindrical wall, and has a support shaft 6 rotatably equipped with the winding drum 1 in the center thereof, and a rib 2 with the brake shoe 3 is fitted inside the case. A ladder lifting device according to any one of claims 1 to 3 of the claims 1 to 3, which is registered as a utility model.