JPS6172577U

JPS6172577U -

Info

Publication number: JPS6172577U
Application number: JP15430584U
Authority: JP
Priority date: 1984-10-15
Filing date: 1984-10-15
Publication date: 1986-05-17

Description

[Brief explanation of the drawing]

第１図は本考案に係るクレーンブーム操作装置
を備えたクレーン車両の斜視図、第２図は同平面
図、第３図は同側面図、第４図は動力部を搭載し
た場合のクレーン車両の側面図、第５図はアウト
リガ装置の配置説明図、第６図は同側面図、第７
図は同一部断面した底面図、第８図はクレーンブ
ームの側面図、第９図は油圧回路図、第１０図は
操作レバーの説明図である。３０は主ブーム起伏シリンダ、３３は主ブーム
構体、３４は補ブーム構体、４４は補ブーム起伏
シリンダ、５２，５３は主ブーム伸縮シリンダ、
５５，５６は補ブーム伸縮シリンダ。 Figure 1 is a perspective view of a crane vehicle equipped with a crane boom operating device according to the present invention, Figure 2 is a plan view of the same, Figure 3 is a side view of the same, and Figure 4 is a crane vehicle equipped with a power section. 5 is an explanatory diagram of the arrangement of the outrigger device, 6 is a side view of the same, 7 is a side view of
8 is a side view of the crane boom, FIG. 9 is a hydraulic circuit diagram, and FIG. 10 is an explanatory diagram of the operating lever. 30 is a main boom hoisting cylinder, 33 is a main boom structure, 34 is an auxiliary boom structure, 44 is an auxiliary boom hoisting cylinder, 52 and 53 are main boom telescopic cylinders,
55 and 56 are auxiliary boom telescoping cylinders.

Claims

[Scope of utility model registration request]

A boom telescoping operation valve 66 and a main boom telescoping cylinder 5 which are switched and operated by the boom telescoping lever 102
Pilot check valves 90, 91 are provided in the circuit connecting the boom telescopic operation valve 66 and the auxiliary boom telescopic cylinders 55, 56, and pilot check valves 73, 74 are provided in the circuit connecting the boom telescopic operation valve 66 and the auxiliary boom telescopic cylinders 55, 56. Pilot check valves 94 and 95 are provided in the circuit connecting the boom hoisting operation valve 67 switched and operated by the main boom hoisting cylinder 30 and the circuit connecting the boom hoisting operation valve 67 and the auxiliary boom hoisting cylinder 44. Pilot check valves 78 and 79 are provided on the discharge side of the pump 69.
Crane boom operation of a crane vehicle, characterized in that a main auxiliary switching valve 80 for opening and closing operation of the main auxiliary switching valve 80 is provided, and a main auxiliary switching switch 105 for switching operation of the main auxiliary switching valve 80 is provided on a boom telescoping lever 102. Device.