JPH0196490U

JPH0196490U -

Info

Publication number: JPH0196490U
Application number: JP19068587U
Authority: JP
Priority date: 1987-12-17
Filing date: 1987-12-17
Publication date: 1989-06-27

Description

[Brief explanation of the drawing]

図面は本考案の実施例を示すもので、第１図は
側面図、第２図は平面図、第３図は左側のフート
部の詳細説明図、第４図は右側のフート部の詳細
説明図、第５図はフート部の平面図、第６図は格
納支持装置部の断面図、第７図はその平面図、第
８図は第６図の―線に沿う断面矢視図、第９
図は補助ジブの吊り下げ状態の側面図である。４は伸縮ブーム、４ａは支持ブーム、４ｃは先
端ブーム、７ａ，７ｂはフート支持ピン、８は補
助ジブ、８ａ，８ｂはフート部、１７はフツク、
１８は格納支持装置、２０は補助ジブ張り出し用
ウインチ、２１は支持ブラケツト、２３はツイス
トブラケツト、２４はツイスト支持。 The drawings show an embodiment of the present invention; FIG. 1 is a side view, FIG. 2 is a plan view, FIG. 3 is a detailed explanation of the left foot, and FIG. 4 is a detailed explanation of the right foot. 5 is a plan view of the foot section, FIG. 6 is a sectional view of the storage support device section, FIG. 7 is a plan view thereof, FIG. 8 is a sectional view taken along the line - in FIG. 9
The figure is a side view of the auxiliary jib in a suspended state. 4 is a telescopic boom, 4a is a support boom, 4c is a tip boom, 7a and 7b are foot support pins, 8 is an auxiliary jib, 8a and 8b are foot parts, 17 is a hook,
18 is a storage support device, 20 is a winch for extending the auxiliary jib, 21 is a support bracket, 23 is a twist bracket, and 24 is a twist support.

Claims

[Scope of utility model registration request]

Foot support pins 7a and 7b are protrudingly provided on both left and right sides of the tip of the tip boom 4c of the boom device 4, which is composed of a support boom 4a and a tip boom 4c that is extendable and retractable with respect to the support boom 4a. In an auxiliary jib device for a crane, in which the left and right foot parts 8a, 8b of an auxiliary jib 8 are fitted to the foot support pins 7a, 7b, and the auxiliary jib 8 is extended and fixed to the tip of the telescopic boom 4, the support boom 4a is fixed. A support bracket 21 is rotatably supported in the longitudinal direction of the support boom 4a on the side surface of the intermediate portion in the longitudinal direction; Storage support device 18 consisting of a twist bracket 23 that can be restrained in an upwardly rotated state.
In addition, a winch 20 for extending the auxiliary jib is provided at the base end of the support boom 4a, and foot portions 8a and 8b are provided on the lower surface of the longitudinally intermediate portion of the auxiliary jib 8.
A support part is provided that is rotatable in the longitudinal direction and detachably connected to the twist bracket 23 of the storage support device 18 in a state where the jib is facing forward. A connection part is provided to detachably connect the auxiliary jib 8 to the support boom 4a while the auxiliary jib 8 is connected to the twist bracket 23 in the upward movement state, and a wire rope of a winch 20 for extending the auxiliary jib is connected to the tip of the auxiliary jib 8. An auxiliary jib device for a crane, characterized in that it is provided with a hook 17.