JPS6418091U

JPS6418091U -

Info

Publication number: JPS6418091U
Application number: JP11300187U
Authority: JP
Priority date: 1987-07-22
Filing date: 1987-07-22
Publication date: 1989-01-30

Description

[Brief explanation of the drawing]

第１図は本考案の実施例を示す補助シーブ装置
使用状態の縦断側面図、第２図は第１図―線
断面図、第３図は同装置格納状態の縦断側面図、
第４図は第３図―線断面図、第５図はアイド
ラシーブの枚数が増加した場合の第２図相当図、
第６図は同第４図相当図、第７図は従来構造を示
す第１図相当図、第８図は第７図仮想線状態の平
面図である。１……ブーム、１１……ブームポイントシーブ
ブロツク、１４……枢軸、３……補巻用アイドラ
シーブ、６……補助シーブ装置、６１……シーブ
ブラケツト、６２……補助シーブ、６３……ボス
、７……格納時固定機構、７１，７２……同機構
を構成する雌ねじ部材、７３，７４……同ボルト
、７５，７６……同当て金。 Fig. 1 is a vertical sectional side view of the auxiliary sheave device in use, showing an embodiment of the present invention, Fig. 2 is a sectional view taken along the line of Fig. 1, and Fig. 3 is a vertical sectional side view of the same device in the stored state.
Figure 4 is a sectional view taken along the line of Figure 3, Figure 5 is a diagram equivalent to Figure 2 when the number of idler sheaves is increased,
6 is a diagram corresponding to FIG. 4, FIG. 7 is a diagram corresponding to FIG. 1 showing a conventional structure, and FIG. 8 is a plan view of the state shown in the imaginary line shown in FIG. 1... Boom, 11... Boom point sheave block, 14... Axis, 3... Idler sheave for auxiliary winding, 6... Auxiliary sheave device, 61... Sheave bracket, 62... Auxiliary sheave, 63... Boss , 7...Fixing mechanism during storage, 71, 72...Femally threaded member constituting the mechanism, 73, 74...The same bolt, 75, 76...The same pad.

Claims

[Scope of utility model registration request]

A boom point sheave block is provided at the tip, and within this boom point sheave block, an auxiliary hoisting idler sheave through which the auxiliary hoisting rope is passed is provided, and it consists of a sheave bracket and an auxiliary sheave attached to this sheave bracket. In a crane boom in which an auxiliary sheave device is attached to the boom point sheave block, a cylindrical boss is fixed to the proximal end of the sheave bracket in the auxiliary sheave device, a pivot is fixed horizontally to the boom point sheave block, and the above-mentioned The boss is rotatably and axially movably fitted to this pivot, allowing the auxiliary sheave device to move up and down relative to the boom point sheave block between the lower position when working and the upper position when retracted. and the auxiliary sheave is installed so as to be movable in the left and right direction between a working position where the auxiliary sheave is aligned with the idler sheave for auxiliary hoisting in a straight line in plan view and a storage position where the position is shifted left and right. a storage fixing mechanism for fixing the auxiliary sheave device at the upper position and the storage position on the point sheave block;
A mounting structure for an auxiliary sheave device in a crane boom, characterized in that a working fixing mechanism is provided for fixing the auxiliary sheave device at the lower position and the working position.