JPH10152867A - Operation pattern changeable monitor device for hydraulic excavator - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide an operation pattern changeable display panel for a hydraulic excavator, which displays an operation pattern where a manipulating direction of a control lever is indicated by an arrow, and a pattern of an operating machine and an operating direction this machine are indicated at the front end part of the arrow so as to prevent even either a beginner or a skilled person from careless misunderstanding, thereby it is possible to enable an operator to surely confirm the operation pattern in order to prevent occurrence of erroneous manipulation so as to surely prevent occurrence of a serious accident. SOLUTION: In an operation pattern changing monitor device for a hydraulic excavator, a plurality of operation pattern setting associative relationships between a manipulating direction of a control lever and operation of working machines are previously set up, and operation pattern display panels 13a to 13d for displaying the operation patterns are incorporated. In this case, the operation pattern display panels 13a to 13d display thereon the operating directions of the control levers 1a, 1b, and a pattern of a working machine c and an operating direction of the working machine (c) actuated by the control levers 1a, 1b are indicated at the front end of the arrow.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an operation pattern conversion monitor for a hydraulic excavator.

[0002]

2. Description of the Related Art As shown in FIG. 5, a hydraulic excavator includes a working machine c in front of an upper revolving structure b having a lower traveling structure a, and a boom d, an arm e, and a packet f. Articulated. Hydraulic cylinders d _1, e _1, which drive each working machine c
by f _1, the front and rear, performs as well as up and down swinging, excavation of earth and sand by pivoting the upper rotating body b by a hydraulic motor b _1, the loading operation. These operations are performed by two operation levers -1 shown in FIG.
a, 1b Done by These operation lever-1a,
1b Hydraulic cylinders d1 _, e1 _, f
₁ and the operating direction of the hydraulic motor b ₁ are determined,
For example, the operation pattern shown in FIG.
a, 1b As a result, the up and down movement of the boom d, the arm e
The work machine c performs eight operations of digging and dumping of the packet f, digging and dumping of the packet f, and turning left and right of the upper turning body b.

However, operation levers 1a and 1b The interlocking relationship between the operation direction of the work machine c and the eight operations of the work machine c, that is, the operation pattern differs depending on the manufacturer of the hydraulic excavator, and a plurality of operation patterns set in advance according to an operator's request or the like. You can freely select from the options. For example, in the prior art described in Japanese Utility Model Laid-Open Publication No. 63-116565, a controller outputs to a solenoid proportional valve and an operation pattern display in response to a command from a pattern changeover switch to select a selected operation. The work machine is operated by exciting the electromagnetic proportional valve by the pattern, and the selected operation pattern is displayed on the operation pattern display, so that the operator is displayed on the operation pattern display. The interlocking relationship between the operation direction of the operation lever and the operation of the work machine is identified by the arrow.

[0004]

[Problems to be Solved by the Invention]
In the related art disclosed in Japanese Patent Application Laid-Open No. 116565/1989, the interlocking relationship between the operation direction of the operation lever and the operation of the work implement is merely indicated by an arrow, and the type of the work implement indicated by the arrow is erroneously operated. Then there is a danger of a serious accident. For example, when the operator operates the operating lever with the intention of tilting the arm, if the upper revolving structure turns, a worker on the side or a work machine such as a bucket collides with an object, causing a serious accident. There was a problem that occurred.

The present invention has been made to solve the above-mentioned problems of the prior art, and displays an operation direction of an operation lever with an arrow on an operation pattern display panel in conjunction with conversion of an operation pattern. By displaying the figure of the working machine operated by the operation lever and the operation direction at the tip of the arrow, the operator can surely operate the operation pattern without being inadvertently mistaken not only by beginners but also by experts. The present invention provides an operation pattern display panel of a hydraulic excavator capable of reliably preventing a serious accident by recognizing the erroneous operation.

[0006]

In order to achieve the above object, the operation pattern switching device for a hydraulic excavator according to the first invention of the present application comprises an operation direction of an operation lever and an operation of a work machine. In an operation pattern conversion monitor of a hydraulic excavator having an operation pattern display panel for setting a plurality of operation patterns for setting an interlocking relationship with the operation pattern and displaying the operation patterns, The display panel has an operation lever.
Is displayed by an arrow, and the figure of the working machine operated by the operation lever and the operation direction are displayed at the tip of the arrow.

According to the first invention, the plurality of operation pattern display panels indicate the operation direction of the operation lever by an arrow, and the figure of the working machine operated by the operation lever and the figure at the tip of the arrow. Since the operation direction is displayed, even a skilled person or a beginner can identify the operation direction of the operation lever and the operation of the work machine in the selected specific operation pattern without being mistaken. Therefore, since the operator does not inadvertently mistakenly recognize the operation pattern, erroneous operation is prevented and a serious accident can be reliably prevented. In particular, even when the operator is changed or the conversion operation is carelessly performed, the operation pattern can be confirmed on the operation pattern display panel in which the graphic of the work implement and the operation direction thereof are indicated by arrows. In addition, since the predetermined operation patterns are arranged, there is an advantage that the operation pattern can be selected while looking at the operation pattern display panel.

In the operation pattern switching device for a hydraulic excavator according to the second invention of the present application, a plurality of operation patterns for setting an interlocking relationship between the operation direction of the operation lever and the operation of the work machine are set in advance, and In an operation pattern conversion monitoring device of a hydraulic excavator having an operation pattern display panel for displaying each operation pattern, the operation pattern display panel includes a figure of a work machine for each of a plurality of set operation patterns. The operation direction is indicated by an arrow.

According to the second aspect of the present invention, the plurality of operation pattern display panels are displayed by arrows indicating the working machine figures and their operating directions, so that not only skilled workers but also beginners are selected. The operation direction of the operation lever and the operation of the work machine in a specific operation pattern can be identified without being mistaken. Therefore, similarly to the first invention, erroneous operation is prevented, and a serious accident can be reliably prevented. In addition, there are the same functions and effects as the first invention.

The operation pattern switching device for a hydraulic excavator according to the third invention of the present application is characterized in that, in the first invention, the operation pattern display panels (13a to 13d) are identified by liquid crystal.

According to the third aspect, since the operation pattern display panel is a liquid crystal display, there is an effect that the identification is clear not only at night but also during the day.

An operation pattern switching device for a hydraulic excavator according to a fourth invention of the present application is characterized in that, in the first invention, the operation pattern display panel is identified by a lamp.

According to the fourth aspect of the present invention, since the operation pattern display panel displays a lamp, there is an effect that the identification is clear not only at night but also during the day.

[0014]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS An embodiment of an operation pattern conversion monitoring device for a hydraulic excavator according to the present invention will be described with reference to FIG.
4 will be described in detail with reference to FIGS.

An embodiment of the present invention will be described with reference to FIGS. FIG. 1 shows an operation pattern conversion monitoring device using an electric operation pattern switching device 3, and the electric operation pattern conversion device 3 is described in detail by the applicant of the present invention. 63-166511, the operation pattern conversion monitor device will be described again while giving an outline again. 1 and 2, reference numerals 1a and 1b denote operation levers composed of electric levers.
By tilting to the left and right, the displacement is first input to the operation pattern switching device 3 before being converted to an electric signal and output to the controller 2 for controlling the working machine. In the operation pattern switching device 3, when the operation pattern is converted into a desired operation pattern and output to the controller 2, each hydraulic actuator is operated by a command signal from the controller 2 in accordance with the operation of the front and rear operation levers 1a and 1b. 8a to 8d are controlled.

The control hydraulic circuit of the hydraulic actuators 8a to 8d will be schematically described with reference to the drawings. Each of the main passages 6a and 6b of the discharge hydraulic pressure of the two hydraulic pumps 5a and 5b driven by the engine 4 has a respective working machine actuator 8a to 8d.
Are provided with operation valves 7a to 7d. Of these operating valves 7a to 7d, 7a is an operating valve for the boom cylinder 8a, 7b is an operating valve for the arm cylinder 8b, 7c
Is an operation valve for the bucket cylinder 8c, and 7d is an operation valve for the swing motor 8d. Each of the operation valves including the electromagnetic pilot valves is controlled by a command signal from the controller 2.

FIG. 2 shows the operation pattern switching device 3.
This will be described below. The shaft 10 of the switching knob 9 has eight levers.
11 are attached, and when the operation pattern is converted, the signal circuit to the controller 2 is also changed at the same time. For example, the predetermined operation pattern when tilted to the right operation lever -1a on one side, the signal operation pattern - down switching device via the incoming A _1, A to A ₀ of 3 control -
Enters the La 2 A, the operation lever - stroke - turning command signal corresponding to the click from A ₀ Akuche - is output to one of the solenoid control valve 7d for data 8d and to the right turn. When tilting in the opposite direction, the signal operation pattern - down switching device via the incoming B _1, B 3 of B ₀ control - enters the La 2 B,
Operation lever - stroke - command signal corresponding to the click is the left pivot by switching circuit is outputted from the B ₀ to the other solenoid control valve 7d for pivoting actuator 8d. In the same manner, the other hydraulic actuators 8a, 8b, 8c are operated in accordance with the operating directions and lever strokes of the left and right operating levers 1a, 1b.

The switching knob 9 of the operation pattern switching device 3 is turned, and the lever 11 is moved so that A → A ₂ , B → B _2.
→ when in H ₂ switches the connection is converted to another operation pattern, further, be further converted into another operation pattern by changing the connection by the lever 11 in the same way. Each actuator control based on the operation pattern selected in this way is performed via the controller 2. in this way,
In the above-mentioned predetermined operation pattern, when the right operation lever-1a is tilted to one side, the turning motor 8d turns right. However, in other operation patterns, even when the right operation lever-1a is tilted in the same direction, the boom rise, descent, Arm tilt, dumb,
Alternatively, the mode is switched to one of the tilt and the dam of the bucket. Similarly, other than the tilting of the right operation lever-1a to one side, the operation of the work implement c is different from the predetermined operation pattern.

The conversion pattern monitoring device 12 selected by the operation pattern switching device 3 will be described. As shown in FIG. 1, in the present embodiment, the operation pattern monitor device 12 has a liquid crystal (LCD) operation pattern display panel 13 in which the first to fourth four types of operation patterns are respectively made into figures.
a to 13d are provided. Operation pattern display panel 13
a, when the right operation lever 1a is operated upward in the plane of the paper, the boom descends as shown in a; when the right operation lever 1a is operated downward in the plane of the paper, the boom rises as shown in b; When operated to the left, the bucket tilts as indicated by d. When the left operating lever 1b is operated upward in the plane of the paper, the upper revolving superstructure turns right as shown in e, when it is operated downward, the upper revolving superstructure turns left as shown in f, and when it is operated rightward, the arm as shown in g. When tilted and operated to the left, the arm dumps like h. Other operation pattern display panel 13
Since b to 13d are the same, the description is omitted.

On the operation pattern display panels 13a to 13d of these liquid crystals, four switches 14a to 14d corresponding to the operation patterns are arranged on the shaft 10 of the operation pattern switching device 3, as shown in FIG. Electric circuits 15a to 15
d is connected to the CPU 16 incorporated in the monitor device 12. When the operation pattern switching device 3 switches to a predetermined operation pattern by rotation of the operation pattern switching shaft 11, predetermined operation pattern switches 14a to 14d
Are connected to each other, input as an electrical signal to the CPU 16, output to the operation pattern display panels 13a to 13d corresponding to the selected operation pattern, and displayed on the liquid crystal.

FIG. 4 shows another embodiment of the operation pattern monitor device. The operation pattern monitor device 17 includes first to fourth operation pattern display boards 18a to 18d similar to the operation pattern monitor device 12. After being arranged, lamps 19a to 19d of these respective display panels are provided.
Each of these lamps 19a to 19d has an electric circuit 20a to 19d in which respective switches are provided on the shaft 10 of the switching knob 9 of the operation pattern switching device 3 in the same manner as in the above-described embodiment.
The specific display lamps 19a to 19d which are connected by 20d and correspond to each operation pattern selected by rotation switching of the switching knob are turned on and displayed.

Although an electric pattern switching device has been described as an embodiment of the operation pattern switching device 3 in the above-described operation pattern conversion monitor device, it is needless to say that a selector valve system or other means may be used. The output pattern output means for performing the operation pattern display panel 13 in conjunction with the pattern switching device 3 and identifying and displaying the output signal from another display panel is also set variously, and is not limited to the present embodiment.

[Brief description of the drawings]

FIG. 1 is an electro-hydraulic circuit diagram showing an embodiment of an operation pattern conversion monitor device according to the present invention.

FIG. 2 is a diagram showing details of an operation pattern switching device shown in FIG. 1;

FIG. 3 is a diagram showing a connection relationship between the operation pattern switching device shown in FIG. 1 and a monitor device.

FIG. 4 is a diagram showing another embodiment of the operation pattern conversion monitor device according to the present invention.

FIG. 5 is a schematic side view of a hydraulic excavator.

FIG. 6 is a schematic explanatory view showing an example of an operation pattern of an operation lever.

[Explanation of symbols]

 1a Right operation lever 1b Left operation lever 8a Foom cylinder 8b Arm cylinder 8c Bucket cylinder 8d Rotating motor 9 Operation pattern switching knob 10 Axis 11 Lever 12, 17 Operation pattern conversion monitor 13a to 13d, 18a to 18d Operation pattern display panel 14a to 14d Switch 15a to 15d, 20a to 20d Electric circuit 16 CPU 19a to 19d Lamp

Claims (4)

[Claims] An operation pattern display panel (1) for setting a plurality of operation patterns in advance to set an interlocking relationship between an operation direction of an operation lever and an operation of a work implement, and displaying the operation patterns.
3a to 13d), the operation pattern display panel (13a to 13d) displays the operation direction of the operation levers (1a, 1b) with arrows, and displays the operation directions of the arrows. An operation pattern conversion monitor device for a hydraulic excavator, wherein a graphic of a working machine (c) operated by the operating levers (1a, 1b) and an operating direction thereof are displayed at a tip portion. 2. An operation pattern display panel for previously setting a plurality of operation patterns for setting an interlocking relationship between an operation direction of an operation lever and an operation of a work machine, and displaying each of the operation patterns.
In the operation pattern conversion monitoring device for a hydraulic excavator having (13a to 13d), the operation pattern display panel (13a to 13d) has a figure of the work machine (c) and an An operation pattern conversion monitoring device for a hydraulic excavator, wherein an operation direction is indicated by an arrow. 3. The operation pattern conversion monitor of a hydraulic excavator according to claim 1, wherein the operation pattern display panels (13a to 13d) are identified by liquid crystal. 4. The operation pattern conversion monitor of a hydraulic excavator according to claim 1, wherein the operation pattern display panel is identified by a lamp.