JPS62116086U

JPS62116086U -

Info

Publication number: JPS62116086U
Application number: JP360986U
Authority: JP
Priority date: 1986-01-13
Filing date: 1986-01-13
Publication date: 1987-07-23

Description

[Brief explanation of the drawing]

図は本考案の実施例を示し、第１図はジブ張出
し状態の正面図、第２図は同状態の平面図、第３
図はジブツイスト状態、第４図はジブ格納状態の
各側面図、第５図はジブ基端部分の斜視図、第６
図は第４図―線拡大断面図である。１……ブーム、１３……ブーム側係合部材とし
ての係合レール、２……補助ジブ、２１……可動
ジブフツト、２２……固定ジブフツト、２４……
ジブ側係合部材としての係合片。 The figures show an embodiment of the present invention, in which Fig. 1 is a front view of the jib in an extended state, Fig. 2 is a plan view of the same state, and Fig. 3 is a front view of the jib in the extended state.
The figure shows the jib in the twisted state, Figure 4 is a side view of the jib in the retracted state, Figure 5 is a perspective view of the base end of the jib, and Figure 6 is a side view of the jib in the retracted state.
The figure is an enlarged sectional view taken along the line of FIG. DESCRIPTION OF SYMBOLS 1...Boom, 13...Engagement rail as a boom side engagement member, 2...Auxiliary jib, 21...Movable jib foot, 22...Fixed jib foot, 24...
An engagement piece as a jib side engagement member.

Claims

[Scope of utility model registration request]

A boom with boom point pins protruding from both left and right sides of the tip end, and an auxiliary jib that has jib feet on both left and right sides of the base end and is extended from the boom tip with the jib feet on both sides engaged with the boom point pins on both sides. One jib foot of the auxiliary jib is a movable jib foot that can rotate around its axis, and the other jib foot is a fixed jib foot. a hanging stage, a jib twisting stage in which the jib is twisted around the axis of the movable jib foot while the jib is suspended, and after this jib twisting, the jib is pulled toward the boom side around the boom point pin engaged by the movable jib foot. In a wheeled crane configured to be stored on the lateral side of the boom through a pulling stage, the jib twist is provided at the base end of the auxiliary jib and on the lateral side where the auxiliary jib is stored at the tip of the boom. Engaging members are respectively provided that can engage with each other in the state to prevent rotation of the auxiliary jib about the axis of the movable jib foot, and the engaged state of both engaging members is maintained until the end of the jib pulling stage. A storage device for an auxiliary jib in a wheeled crane, wherein at least one of the engaging members is formed in an arc shape centered on a boom point pin engaged with the movable jib foot.