Power plants – Pressure fluid source and motor – Having condition responsive control in a system of...
Patent
1990-03-27
1992-01-07
Look, Edward K.
Power plants
Pressure fluid source and motor
Having condition responsive control in a system of...
60434, 60368, 60427, 60431, F16D 3102
Patent
active
050779737
DESCRIPTION:
BRIEF SUMMARY
TECHNICAL FIELD
The present invention relates to an apparatus for controlling a construction machine.
BACKGROUND ART
A conventional apparatus for controlling a construction machine is usually constructed such that control mode well adapted to the kind of operation to be performed is selected and instructed by actuating a plurality of switches arranged on an operation panel. The instructed control is executed by the actuation of the switches.
In practice, however, selection and instruction of a certain control mode adapted to the kind of operation being performed by actuation of the plural switches leads to a result that an operator bears a heavy burden. In addition, a control mode is often incorrectly selected, and as the kind of control mode increases, a danger of performing an incorrect operation increases correspondingly. Hence, an object of the present invention is to provide an apparatus for controlling a construction machine wherein the burden to be borne by an operator can be reduced and a danger of incorrectly selecting a control mode can be eliminated reliably.
DISCLOSURE OF THE INVENTION
To accomplish the above object, the present invention provides an apparatus for controlling a construction machine, wherein the apparatus includes operation selecting means for selecting a required operation from a plurality of kinds of basic operations to be performed by the construction machine, and means for selecting and instructing a control mode well adapted to the operation selected by the operation selecting means from the various kinds of control mode, based on the operation selected by the operation selecting means, whereby the content of control mode is well adapted to the automatically selected operation is derived merely by allowing an operator to select a required operation. According to the present invention, certain control modes well adapted to the selected operation are definitely specified. Consequently, the heavy burden to be borne by the operator can be reduced and an operation of incorrectly selecting various kinds of controls can be prevented.
BRIEF DESCRIPTION OF THE DRAWINGS
FIG. 1 is a block diagram which schematically illustrates an apparatus for controlling a construction machine in accordance with an embodiment of the present invention, FIG. 2 is a block diagram which schematically illustrates the structure of an operation panel for the apparatus in FIG. 1, FIG. 3 is a front view of the operation panel in FIG. 2 which shows a panel layout in detail, FIG. 4 is a sectional view of the operation panel taken in line A--A in FIG. 3, FIG. 5 is an explanatory view illustrating a processing to be performed in a soft mode, FIGS. 6 to 17 are a flowchart which illustrate a series of steps to be processed by a CPU shown in FIG. 1, respectively, FIG. 18 is a characteristic diagram illustrating a function to be accomplished by a governor, FIG. 19 is an explanatory view illustrating a function of separating hydraulic pumps from each other, FIG. 20 is a characteristic diagram illustrating a function to be accomplished by a torque variable control valve, and FIG. 21 shows a plurality of characteristic diagrams which illustrate a function to be accomplished out during each operation, respectively.
BEST MODE FOR CARRYING OUT THE INVENTION
Now, the present invention will be described in more details hereinafter with reference to the accompanying drawings.
FIG. 1 is a block diagram which schematically illustrates an apparatus for controlling a construction machine in the form of a power shovel 40 in accordance with an embodiment of the present invention. According to the embodiment of the present invention, the apparatus includes an operation panel OP which is constructed as shown in FIG. 2.
This operation panel OP has a panel layout as shown in FIG. 3. FIG. 4 is a sectional view of the operation panel OP taken in line A--A in FIG. 3. As shown in the drawings, the front surface of the operation panel OP is covered with a flexible sheet 1 made of synthetic resin. This sheet 1 has a light shiel
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Akushichi Shuki
Suzuki Mitsuru
Kabushiki Kaisha Komatsu Seisakusho
Look Edward K.
Mattingly Todd
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