Title:
ACTION LIMITING DEVICE FOR MOBILE CRANE
Document Type and Number:
Japanese Patent JP3073307
Kind Code:
B2
Abstract:
PURPOSE: To eliminate a feeling of uneasiness given to an operator by providing a limit display part, which displays a restriction for whether it is by an upper limit or by a lower limit when boom related action, reaching a limit value, is restricted, in a display part for representing a boom rough figure as viewed by side surface.
CONSTITUTION: In a mobile crane, various actuators are controlled by a driving control unit 10 to provide an action limiting device for limiting a boom movable attitude within a permissible movable range. In this action limiting device, detecting signals of a boom length detector 11a and an elevation angle detector 11b are compared with input signals of a boom length limit value input part 12a and a boom elevation angle limit value input part 12b, in an arithmetic part 13, to stop action of a boom in accordance with this comparing result. The actual value related to a boom movable attitude is displayed in value display parts 14c, 14d, in a display part 14, and also displaying a restriction for whether it is by an upper or lower limit, when boom related action is restricted by reaching a limit value, in limit display parts 15 to 18.
Inventors:
Hisashi Kushida
Application Number:
JP8956292A
Publication Date:
August 07, 2000
Filing Date:
March 13, 1992
Export Citation:
Assignee:
Tadano Co., Ltd.
International Classes:
B66C13/46; B66C23/88; (IPC1-7): B66C23/88; B66C13/46
Domestic Patent References:
| JP57175694A | ||||
| JP63196494A | ||||
| JP58192886U | ||||
| JP3130291U | ||||
| JP5823883U | ||||
| JP58192885U |