JPS63315739A - Operation panel of construction machine - Google Patents

Abstract

PURPOSE:To eliminate maloperation by using a system in which a control mode suitable for selected operation is indicated from various control modes when operating an operation mode-selecting switch to select and indicate basic operation kinds of construction machines. CONSTITUTION:At a time when the key switch of a power shovel is turned on, or when a power source is closed, early-period setting process for setting the most standard operation mode for power shovel is made by CPU 11. By pushing a switch position-displaying mark 21 of operation mode, a push-button switch 41 on the back side or operation mode-selecting switch is turned on. In this case, CPU 11 serves to select and indicate a control mode suitable for a selected operation by the switch from among various control modes. The maloperation of control modes can thus be prevented.

Description

DETAILED DESCRIPTION OF THE INVENTION [Field of Industrial Application] The present invention relates to an improvement of a control panel applied to a construction machine.

[Conventional technology]

The operation panel of the construction machine is provided with different switches for instructing various control modes, and the operator selects and instructs the control mode suitable for the type of work by operating these switches.

[Problem that the invention seeks to solve]

However, it is a heavy burden for the operator to select and instruct the control mode suitable for the type of work by operating a number of switches.In addition, the operator often makes a mistake in selecting the control mode, and there is a risk of this erroneous operation. It increases as the number of control modes increases.

[Means for solving problems]

An object of the present invention is to solve such conventional problems, and therefore, the present invention provides a work mode selection switch for selecting and instructing the basic work type of the construction machine; Means is provided for selecting and instructing a control mode suitable for the type of work selected by the switch from among various control modes when the switch is operated.

[Effect]

According to the present invention, a control mode suitable for the type of work is specified based on the selection operation of the type of work using the work mode selection switch.

〔Example〕

Hereinafter, the present invention will be described in detail with reference to the drawings.

FIG. 1 shows an embodiment of a control panel according to the present invention applied to a power shovel.

Figure 2 shows the panel layout, and Figure 3 shows the A of Figure 2.
As shown in the cross-sectional views taken along line -A, the operation panel according to this embodiment has a flexible sheet made of synthetic resin stretched over the panel surface. This sheet 1 has a light-shielding property, and switch position display marks 2 -
2. Lighting+11 The display mark 3, the character mark, and the pattern mark are provided with translucency.

Sheet 1 at each location marked with marks 2, ~2.1
On the back side of the sheet 1, pushbutton switches 4, to 4□1 are arranged, respectively, and light emitting diodes 5 are arranged on the back side of the sheet 1 at each location where the mark 3 is attached. A liquid crystal display 6 is disposed on the panel L side.

Inside the casing 7, an illumination lamp 8 for illuminating each of the above-mentioned translucent marks from the back side of the sheet 1, and an illumination lamp 9 for illuminating the LFK product indicator 6 from the back side are provided. ing.

Each of the push button switches 1 to 4.1 is of a type that is turned on only when pressed, and is turned on by pressing the marks 21 to 211 to bend the sheet 1. The following Table 1 lists the operation items for these switches, ~411, and the contents instructed by their operations. "Heavy excavation" indicates the basic work type of power excavators, among which "straightening" indicates earth leveling work, and "
"Fine operation" means the slight operation of the work equipment.

Furthermore, power modes "S", rLJ, and rHJ are control modes that instruct the engine output and the output ratio of the hydraulic pump when the engine output is set to 100. Note that the output ratio of the pump 1- is, for example, 84100
%, L-60%, 5-50! □It is 16.

Further, auto deceleration means a control mode in which the engine speed is reduced to a preset low speed when the operator returns the work equipment control lever to the neutral position.

In addition, the soft mode is a control mode in which when the work equipment control lever is returned to the neutral position, the flow to the hydraulic actuator of the work equipment is not instantaneously cut off, but is gradually decreased by θ■ shown in Fig. 4. It means.

The priority mode is a control mode that instructs which of the boom cylinder, arm cylinder, and swing motor of the power shovel should be increased (0) to increase the plow supply amount.

Note that "swivel lock" means to lock the two-part revolving structure of the power shovel, and "fan" means a warm IA Ia fan.

Signals 81 to "II" shown in FIG.
is applied to both the hydraulic controller 13 and the engine controller (electronic governor) 14, the signal S3 is applied to the engine controller 14, and the signals 84 to S7 are applied to the hydraulic controller 13, respectively. Signals S SS and S1o are also applied to the buzzer 15, fan 16 and wiper 17, respectively, and signal S1 is applied to the illumination lamps 8.9 and lights (headlights, work lights) 18.

Note that the signals S, S2, 6, S9, S1o, and S11 are each composed of one summer bit,
The instruction content is displayed by a combination of the logic levels of each bit.

Here, the hydraulic controller 13 and engine controller 14 will be briefly explained.

Hydraulic controller 13 and engine controller (
The electronic governor) 14 controls the hydraulic pump so that the output of the hydraulic pump and the engine output are suitable for the work modes "excavation", "straightening", "fine operation", and "cutting 1b11" based on the signal Sl. and fuel injection pump, respectively. Also, based on the signal S2, the modes rHJ, rs
The engine is controlled so that an engine output corresponding to J and rLJ is obtained, and the hydraulic pump is controlled so that the pump output with respect to the engine output at this time is limited in the above mode.

Furthermore, when the engine controller 14 instructs the signal S1 or auto deceleration "ON" and a lever sensor (not shown) detects the neutral state of the work equipment operating lever, the engine speed is reduced to a preset low speed. Control the fuel injection pump so that it is lowered.

Further, the hydraulic controller 13 executes the soft mode processing shown in FIG. 4 when the signal S4 indicates the soft mode "ON", and when the signal S5 indicates the speeds rLOJ and rHIJ, respectively. The hydraulic motor for travel is controlled so that the travel speed is low and high.

Historically, this hydraulic controller 13 controls the flow rate adjustment means so that the amount of control oil for any one of the boom cylinder, arm cylinder, and swing hydraulic motor is increased based on the signal S6, and the signal S7 controls the swing lock. 1, the locking means of the revolving body is partially controlled.

5 to 16 show the processing procedure of CPU II.

In the CPUI 1, first, when the power is turned on, that is, when the key switch of the excavator is turned on, an initial setting process for setting the most standard operation mode of the excavator is executed (step] 00). . That is, the process of setting the work mode to "excavation" by setting the content of the work mode counter to 1, the process of setting the content of the power mode counter to 1 and setting the power mode to "S", and the process of setting the auto deceleration flag to "H". and setting the auto deceleration mode to rONJ and setting the soft mode flag to “L”.
“A process of setting the soft mode set to rOFFJ,
Processing to set the driving speed flag to "L" and the driving speed mode to rLOJ, processing to set the priority mode to "Standard" by setting the contents of the priority mode counter to 0, and turning by setting the turning lock flag to "L#". There is a process to set the lock instruction to rOFFJ, a process to set the buzzer cancel flag to "L" and set the buzzer cancel instruction to rOFFJ, and a process to set the fan flag to "L" and set the fan instruction to "0FFJ". , processing to set the content of the wiper counter to 0 and the content of the instruction regarding the wiper to rOFFJ, and processing to set the content of the lighting/light counter to 0 and the content of the instruction regarding the lighting/light to ``rOFF''. Executed as initial setting processing.

After the initial setting process described above, the CPU 1 sequentially determines whether or not the push button switches 4.4...4 have been turned on (steps 101, 102...111).

If it is determined in step 101 that the switch 41 is turned on, the work mode process shown in FIG. 6 is executed, and then the procedure moves to step 102.

In the operating procedure shown in FIG. 6, first, the process of setting the soft mode flag to "L" and setting the soft mode to rOFFJ is executed (step 120), and then the process of adding 1 to the contents of the work mode counter is executed. (Step 12
1). Then, it is determined whether the content of the work mode counter is 4, 1, and 2 (steps 122, 123, and 12).
4) If the content of the counter is neither 4.1 nor 2, that is, 3, the process of setting the work mode to "fine operation" and setting the power mode rLJ by setting the power mode counter to 2. This process and the process of setting the auto-deceleration flag to "L" and setting the auto-deceleration mode to rOFFJ are executed.

Also, in step]22, the content of the work mode counter is 4.
If it is determined that this is the case, the content of the work mode counter is set to 0 (step 126), and the work mode is changed to "
The process of setting the power mode to "heavy excavation", the process of setting the power mode counter to 0 and setting the power mode to rHJ, and the process of setting the auto deceleration flag to "H" and turning the auto deceleration mode to "ON" are executed. (step 127).

Furthermore, in step 123, the content of the work mode counter becomes 1.
If it is determined that Processing for turning the decel mode "ON" is executed (step 128).

Furthermore, if it is determined in step 124 that the content of the work mode counter is 2, the process of setting the work mode to "straightening" and setting the content of the power mode counter to 1 is performed.
and set the power mode to rSJ, and set the auto deceleration flag to "L" and set the auto deceleration mode to rOF.
Each process to make FJ is executed (step 12
9).

The above processing is organized as shown in the table below.

During heavy excavation work, it is necessary to maximize the power of the engine, so it is desirable to set the power mode to rHJ. If the power mode is set to rHJ, the noise and fuel consumption during non-operation will increase, so it is necessary to turn on the auto deceleration to reduce the engine speed. Further, during heavy excavation, soft mode processing is not required, and it is desirable that the priority mode be in the "standard" state in -L to perform the work efficiently.

Therefore, the combination of instructions for power mode, auto deceleration, soft mode, and priority mode shown in column A of the above table is optimal for heavy excavation, and in this embodiment, the work mode switch 14 is When the excavation mode is selected, the combination of the two instructions is automatically set.

The combinations of instruction contents shown in columns B, C, and D of the table above are also selected to suit the respective operations of "excavation,""straightening," and "micro LX production," and these combinations The alignment is also automatically set simply by operating the switch 41.

The contents of columns A to D in the above table correspond to the signals ss and s, respectively.
%S and S. Commanded by 1 ゝ 2
3 4 As a result, the engine or hydraulic actuator is controlled to be in a state suitable for each work mode.

As shown in Table 2, the power mode for both "excavation" and "straightening" is "S", but in this example, the engine output is changed for each work mode, so the power mode for excavation and straightening is "S". The engine output and pump output when doing this will be different from those when the repair work is involved.

Furthermore, when "correction" and "fine operation" are selected, the auto deceleration is set to rOFFJ mode, and this is for the following reason. That is, when performing straightening work or work requiring fine manipulation, the work implement operating lever is frequently returned to the neutral position. Therefore, if the engine speed is lowered by auto-deceleration each time, there will be an inconvenience that smooth work will not be possible.

When the switch 41 is turned on as shown in
Power mode, auto deceleration mode, soft mode and priority mode are set to suit the type of work, but these modes can be changed arbitrarily by turning on switches 4.4.4 and 46. .

That is, in step 102 shown in FIG.
2 ON Fi! When it is determined that the CPU 11 is running, the content of the power mode counter of the CPU 11 is incremented by 1, as shown in FIG. 7 (step 130).

Next, it is determined whether the content of the counter is 3 or not and whether it is 1 (steps 131 and 132), and if both of the determination results are No, that is, the content of the power mode counter is 2, power mode rLJ is instructed.

Further, if it is determined in step 131 that the content of the power mode counter is 3, the content of the counter is 0.
(step 134), power mode rHJ
is instructed, and if it is determined in step 132 that the content of the counter is 1, the power mode "
"S" is instructed. According to this procedure, the power mode is changed every time the power mode switch 42 is operated.

In addition, as noted in "2" (this power mode "S", rLJ
and rHJ are the contents of the power mode counter 1, respectively.
, 2 and 0.

On the other hand, if it is determined in step 103 in FIG. 5 that the auto deceleration switch 43 is turned on, the auto deceleration flag is inverted (step 40) as shown in FIG. It is determined whether or not the signal is "H" (step 141). If it is determined that the signal is not "H", auto deceleration rOFFJ is instructed (step 142), and if it is determined that the signal is "H", auto decel roNJ is instructed.

Therefore, the switch 43 is in the auto deceleration "ON" state.
When “auto deceleration rOFF” is operated, the switch 43 is turned OFF in the auto deceleration rOFFJ state.
When Nm is produced, auto decel "ON" is instructed.

Next, if it is determined in step 104 in FIG. 5 that the soft mode switch 44 has been turned on, steps 150 to 153, which are similar to steps 140 to 143 in FIG. 8, are executed as shown in FIG. , which causes switch 44
The soft mode is changed every time is turned on.

Further, if it is determined in step 106 shown in FIG. 5 that the priority mode switch 46 has been turned on, 1 is added to the contents of the priority mode counter (step 170), as shown in FIG. It is determined whether the contents of the counter are 4, 1, and 2 (steps 171, 172 and 173), and if the results of these determinations are NO, then That is, when the content of the priority mode counter is 3, "turn" is instructed.

If it is determined in step 171 that the content of the counter is 4, the content of the counter is set to 0 (step 175), and then the priority mode "standard" is designated (step 176).

Further, if it is determined in step 172 that the content of the counter is 1, the priority mode "boom" is instructed (step 177), and if the content of the counter is determined to be 2 in step 173, the priority mode is The mode "arm" is indicated (step 178).

As mentioned above, the priority modes "Standard", "Boom", "
``Arm'' and ``Swiveling'' correspond to the contents 0, 1.2, and 3 of the priority mode counter, respectively. and,
Any priority mode can be designated by changing the contents of this counter by operating the switch 4G.

Note that steps 105, 107 and 1 in FIG.
10, 12 and 13.
As shown in the figure, steps 160-163, 180-183 and 190-19 are based on steps 140-143 in FIG.
3 are executed respectively.

Also, steps 109, 110 and 1 in FIG.
If it is determined in step 11 that the fan switch 4, wiper switch 410, and illumination/light switch 411 have been turned on, the process goes to steps 130 to 136 in FIG. 7, as shown in FIGS. 14, 15, and 16. Followed steps 200~
206.210-216 and 220-226 are executed, respectively.

Note that the CPU II performs the initial setting process 10 shown in FIG.
0 and the processing results shown in FIGS. 6 to 16 are displayed.

That is, for example, when "heavy excavation" of the work modes is instructed, the position is displayed at the position of the character mark (1r! excavation) shown in FIG. 2 via one display drive circuit shown in FIG. The light emitting diode 5 is turned on. This results in
The operator can visually confirm that the current (+:, r city excavation) mode is instructed.

Furthermore, the CPU 1 inputs output signals from sensors 201 to 20° that detect engine water temperature, fuel oil pressure, etc., and displays the detection results of these sensors and the above detection results via a display drive circuit 19. It also functions to display information on the liquid crystal display 6.

〔Effect of the invention〕

According to the present invention, when the work mode selection switch is operated, a control mode suitable for the work type 1 selected by the switch is instructed. Therefore, it is possible to save the effort of operating a large number of control mode instruction switches every time the type of work changes, and it is possible to prevent 21 control mode instructions.

[Brief explanation of drawings]

FIG. 1 is a block diagram showing an embodiment of the operation panel according to the present invention, FIG. 2 is a diagram illustrating the panel layout of the operation panel, FIG. 3 is a sectional view taken along line A-A in FIG. Figure 4 is an explanatory diagram of soft mode processing, Figures 5 to 16
Each figure is a flowchart showing the processing procedure of the CPU shown in FIG. 2, ~2.1...Switch position display mark, 3...
Lighting display mark, 41-4□1...Push button switch, 5
...Light emitting diode, 11...CPU. 13... Hydraulic controller, 14... Engine controller. A] Fig. 2 Fig. 3 Fig. 9 Fig. 10 Invasion t-p' processing Fig. 11 Fig. 14 Type open/lye l-processing

Claims (1)

[Scope of Claims] An operation panel for instructing various control modes of construction machinery using different switches, comprising: a work mode selection switch for selecting and instructing basic work types of the construction machine; and this work mode selection switch. 1. An operation panel for a construction machine, comprising means for selecting and instructing a control mode suitable for the type of work selected by the switch from among the various control modes when the switch is operated.