JPH039388U

JPH039388U -

Info

Publication number: JPH039388U
Application number: JP6964389U
Authority: JP
Priority date: 1989-06-13
Filing date: 1989-06-13
Publication date: 1991-01-29
Anticipated expiration: 2004-04-27
Also published as: JPH0615969Y2

Description

[Brief explanation of drawings]

第１図は本考案の第１実施例を示すジブ格納状
態、第２図は同ジブ張出し時におけるジブ垂下工
程、第３図および第４図は同ジブツイスト工程、
第５図は同ジブ張出し完了状態をそれぞれ示す側
面図、第６図は第１図の一部拡大図、第７図は第
６図−線断面図、第８図は第３図−線拡
大断面図、第９図は本考案の第２実施例を示す第
６図相当図、第１０図は従来装置を示すジブ張出
し状態の側面図、第１１図は同一拡大図である。１……ブーム、２……ジブ、３……アクチユエ
ータとしての起伏シリンダ、１２……ブーム側ホ
ース、１５……ジブ側配管としてのジブ側チユー
ブ、１４……ホースガイド部材としてのホースガ
イドローラ、１９……同ガイドローラの取付部材
、２０……同部材を回転自在に支持する軸受、１
６……回転接手、１７……同接手のロータ、２４
……ホースガイド部材としてのガイドフレーム、
ｌ……ジブツイスト中心軸、ｍ，ｎ……ホースガ
イド部材の回転中心軸。 Fig. 1 shows the jib storage state showing the first embodiment of the present invention, Fig. 2 shows the jib hanging process when the jib is extended, Figs. 3 and 4 show the jib twisting process,
Figure 5 is a side view showing the jib fully extended, Figure 6 is a partially enlarged view of Figure 1, Figure 7 is a cross-sectional view taken from Figure 6, and Figure 8 is an enlarged view taken from Figure 3. 9 is a sectional view corresponding to FIG. 6 showing a second embodiment of the present invention, FIG. 10 is a side view of a conventional device in a jib extended state, and FIG. 11 is an enlarged view of the same. 1... Boom, 2... Jib, 3... Lifting cylinder as an actuator, 12... Boom side hose, 15... Jib side tube as jib side piping, 14... Hose guide roller as a hose guide member, 19...A mounting member for the guide roller, 20...A bearing that rotatably supports the same member, 1
6... Rotating joint, 17... Rotor of the same joint, 24
...Guide frame as a hose guide member,
l... Jib twist center axis, m, n... Rotation center axis of the hose guide member.

Claims

[Claims for Utility Model Registration] 1. A jib equipped with an actuator driven by hydraulic or pneumatic pressure is extended from the tip of the boom, and this jib is stored on one side of the boom when not in use, and when in use, the jib is A hanging process in which the left and right sides of the base end are connected to the boom tip and the boom hangs down from the boom tip using this connection point as a fulcrum, and from this hanging state around the axis in the length direction of the jib passing through the above connection point. It is extended to the tip of the boom through a twisting process in which it rotates, and a pulling process in which it is pulled up to the front of the boom centering on the connection point, and on the other hand,
Equipped with a jib in which the actuator and the drive source of the actuator are connected via a boom-side hose provided along the side of the boom where the jib is stored and jib-side piping provided along the jib. In the crane, a hose guide member for guiding the boom-side hose toward the jib-side piping is provided at a lower part of the jib when the jib is stored.
The boom-side hose that comes out of this hose guide member is attached to be rotatable about an axis that is parallel to the twist center axis of the jib, and the boom-side hose that comes out of this hose guide member connects to the rotation center axis of the hose guide member with a rotating joint to the jib-side piping. A piping device for a crane with a jib, characterized in that the piping device is rotatably connected around almost the same axis. 2. The piping device for a jib-equipped crane according to claim 1, wherein the hose guide member and the rotor of the rotary joint are connected so as to be integrally rotatable around the same axis.