JPH0465290U - - Google Patents

Description

[Brief explanation of drawings]

FIG. 1 is an explanatory diagram of the mobile crane operating device of the present invention. FIG. 2 is an explanatory diagram of a mobile crane, and FIG. 3 is an explanatory diagram of a conventional mobile crane operating device. Telescopic boom...1, Lifting block...2, Lifting cylinder...3, Telescopic cylinder...4, Winch motor...5, Swing motor...6, Hoisting control valve...7, Telescopic control valve...8, Winch Control valve...9, Swing control valve...10, Manual input section...
11. Arithmetic processing unit... 12. Lifting drive direction designation switch... 13. Telescopic drive direction designation switch...
14. Winch drive direction designation switch...15.
Swing drive direction designation switch...16, switching amount signal generation means...17.

Claims (1)

[Scope of Claim for Utility Model Registration] A hoisting block 2 is suspended from the tip of a telescopic boom 1 that can be freely undulated and rotated, and the hoisting movement, telescopic movement, and turning movement of the telescoping boom 1 and the hoisting and hoisting movement of the hoisting block 2 are controlled. Valve 7, telescopic control valve 8
, an operating device for a mobile crane, in particular, a mobile crane operating device configured to perform hoisting control by a hoisting cylinder 3, a telescopic cylinder 4, a winch motor 5, and a swing motor 6, which are driven and controlled by a winch control valve 9 and a swing control valve 10. A luffing drive direction designating switch 13 outputs a signal designating the switching direction of the valve 7, a telescopic drive direction designation switch 14 outputs a signal designating the switching direction of the telescopic control valve 8, and a telescopic drive direction designation switch 14 designates the switching direction of the winch control valve 9. A winch drive direction designation switch 15 that outputs a signal, a swing drive direction designation switch 16 that outputs a signal that designates the switching direction of the swing control valve 10, and a common switch that outputs a signal related to the operation amount of each control valve 7 to 10. a manual input section 11 having a switching amount signal generating means 17; and an arithmetic processing device 12 for receiving and processing the output signal of the manual input section 11 and outputting an operation signal to each of the control valves. The arithmetic processing unit 12 receives the output signals from the direction designation switches 13 to 16 of the manual input section 11 and the switching amount signal generation means 17, and controls the control valve corresponding to the direction designation switch to be operated. In an apparatus configured to output an operation signal to a corresponding control valve to switch an amount related to the output signal of the switching amount signal generating means 17 in a specified direction, the arithmetic processing unit 12 controls the expansion/contraction drive direction of the manual input section 11. When a telescopic boom extension signal (or reduction signal) is received from the designation switch 14 and a winch lowering signal (or winch hoisting signal) is received from the winch drive direction designation switch 15, the In order to keep the distance constant regardless of whether the telescopic boom 1 is extended (or retracted), an operation signal instructing the switching amount of the telescopic control valve 8 in the extension direction (or retraction direction) and a winding of the winch control valve 9 are provided. A mobile crane characterized in that an operation signal instructing a switching amount in a lowering direction (or a hoisting direction) is calculated using a signal from a switching amount signal generating means 17 of the manual input section 11. Operating device.