JPH10157984A - Work condition display device for work machine - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide each detector respectively detecting a work condition of a work machine driven by a plurality of operating levers, work condition arithmetic device receiving a signal from each detector to calculate a plurality of the work conditions of the work machine, and a display device displaying an arithmetic result, lessen a size of individual display when many work conditions are displayed at a time in the display device, prevent troublesome operation while watching a display necessary for taking care relating to operation, and prevent roughing of the operation. SOLUTION: A device comprises an operation detector detecting at least a specific operating lever operated of a plurality of operating levers and a display selecting device 45, of an arithmetic result calculated by the work condition arithmetic device 18 by receiving a detection signal from the operation detector, selecting the arithmetic result related to the specific operation to display only the selected arithmetic result in a display device 19.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a work status display device for a working machine.

[0002]

2. Description of the Related Art There are a crane truck, a high-place truck, a digging column truck and the like as a working machine of this kind. In the following description, a crane truck will be described as an example. As shown in FIG. 4, the crane truck A has a swivel 2 on a vehicle 1 and a telescopic boom 3 on the swivel 2 so as to be able to move up and down. The telescopic boom 3 is configured such that the intermediate boom 5 is inserted into the base boom 4, the leading boom 6 is inserted into the intermediate boom 5, and the telescopic boom is extended and contracted by an appropriate telescopic device.
Is arranged so that the telescopic boom 3 can be driven up and down with respect to the swivel 2. The winch 8 is arranged on the swivel 2, and the wire rope 9 extended from the winch 8 passes through the sheave arranged at the tip of the telescopic boom 3, and the hook 10 is hung from the tip of the telescopic boom 3. I have. A driver's seat 11 arranged on the swivel base 2 has a telescopic operation lever 12, a telescopic operation lever 12, a raising / lowering operation lever 13, a turning operation lever 14, and a winch operation lever 15 for expanding / contracting, raising / lowering, and turning the winch 8 up / down. The raising / lowering operation lever 13, the turning operation lever 14, and the winch operation lever 15 are not shown.)
By manipulating 14 and 15, the suspended load suspended on the hook 10 is moved to an appropriate position to perform the crane operation.

[0003] By the way, the driver's seat 1 of such a crane truck is used.
1 is provided with a work state display device 16 for displaying the work state of the crane truck. As shown in FIG. 5, the work status display device 16 is provided with the plurality of operation levers 12, 1 and 2.
Detectors 17 for detecting the operating states of the crane trucks driven by 3, 4, 15 respectively;
The work condition calculating device 18 calculates a plurality of work conditions of the crane truck by receiving a signal from the device 7, and a display 19 for displaying the calculation result.

That is, each of the detectors 17 for detecting the operation state of the crane truck includes, for example, a boom length detector 20 for detecting the boom length of the telescopic boom 3, and an undulation angle for detecting the undulation angle of the telescopic boom 3. Detector 21, turning angle detector 2 for detecting the turning angle of turning table 2 (turning angle of telescopic boom 3)
2. A rope feeding amount detector 23 for detecting the feeding amount of the wire rope 9 fed from the winch 8, a hook number detector 24 of the fire rope 9 wound between the sheave at the end of the telescopic boom and the hook 10, a undulating cylinder. 7 corresponds to a detector such as a load detector 25 for detecting a load acting on the load 7. In addition to the above, an overhang width detector for detecting the overhang width of the outrigger as necessary, a jib length detector for detecting the length and the undulation angle of the joint jib added to the tip of the telescopic boom 3, and a jib undulation angle detector, etc. There are detectors.

The work state calculating device 18 receives signals from the detectors 17 and receives, for example, a boom length, an undulation angle, a work radius, a head, a rated load, an actual load, a load factor, a jib length,
Jib hoisting angle, current turning angle, limit turning angle, margin turning angle, etc. are calculated and obtained.

[0006] In the display 19, the work state computing device 1
The calculation results obtained by the calculation in step 8 are displayed on the screen as shown in FIG. That is, the boom length is 26,
The undulation angle is 27, the working radius is 28, the head is 29, the rated load is 30, the actual load is 31, the load factor is 32,
The jib length is 34, the jib hoisting angle is 35, the current turning angle is 36, the limit turning angle is 37, and the margin turning angle is 3
Numerals 8 are displayed numerically. The load factor is displayed on the bar 33 with a bar meter.

When performing a crane operation with a crane truck equipped with such a work state display device 16, an operator of the crane operates while checking the work state by looking at the work state display device 16.

[0008]

However, as shown in FIG. 6, since a large number of items indicating the work status are displayed on the display 19 at a time, the size of each display is reduced, and the operator's view is reduced. Operators who need to pay particular attention to the operation and check the operation status while checking the display of the items become cumbersome for the operator, and crane operation while paying attention to the operation status becomes sparse. Met. SUMMARY OF THE INVENTION It is an object of the present invention to provide a work state display device for a working machine which has solved the above-mentioned problems.

[0009]

In order to achieve the above object, a working state display device for a working machine according to the present invention includes a detector for detecting an operating state of a working machine driven by a plurality of operating levers. A work state calculation device that receives a signal from each of the detectors and calculates a plurality of work states of the work machine;
And a work state display device of a work machine having a display for displaying a calculation result, wherein an operation detector for detecting that at least a specific operation lever of the plurality of operation levers has been operated, and A display selection device that selects a calculation result of a work state related to the specific operation from calculation results calculated by the work state calculation device in response to the detection signal and displays only the selected calculation result on the display; It is characterized by having.

[0010]

DESCRIPTION OF THE PREFERRED EMBODIMENTS Embodiments of the present invention will be described below with reference to FIGS. In addition, FIG.
6 to 17 and 17 to 17 shown and described in FIG.
Reference numeral 38 is the same in the following description, and the detailed description is omitted. Reference numeral 40a denotes an extension operation detector that detects that the extension operation lever 12 has been extended, and reference numeral 40b denotes a reduction operation detector that detects that the extension operation lever 12 has been reduced. 41a is
A raising operation detector 41 detects that the raising / lowering operation lever 13 has been raised, and 41b is a lowering operation detector that detects that the raising / lowering operation lever 13 has been lowered. Reference numeral 42a denotes a right turning operation detector for detecting that the turning operation lever 14 has been turned right, and reference numeral 42b denotes a left turning operation detector for detecting that the turning operation lever 14 has been turned left. 43a is the winch operation lever 15
Is a winch hoisting operation detector for detecting that a winch operation has been performed, and 43b is a winch lowering operation detector for detecting that a winch operation lever 15 has been operated for lowering.

Reference numeral 44 denotes a work status display device, which is different from the work status display device 16 described in the prior art in that a display selection device 45 described below is added in addition to the operation detector. doing. Reference numeral 45 denotes a display selection device, which comprises a display selector 46 and a display image storage 47. The display selector 46 receives a signal from the specific operation detector, selects a calculation result of a work state related to the specific operation from calculation results from the work state calculation device 18, and selects the selected calculation result. A display image for displaying only the selected operation is selected from the display image storage 47, and the selected operation result is displayed on the display 19.

For example, when the winch operation lever 15 is lifted, the display selector 4 of the display selection device 45 is operated.
6 receives a signal from the winch hoisting operation detector 43a, selects a calculation result of the rated load and the actual load from the work state calculating device 18, and displays an image displaying only the rated load and the actual load from the display image storage 47. Then, a signal is output to the display 19 so as to display the rated load and the actual load on the image. The display 19 receives the signal from the display selection device 45 and displays the values of the rated load and the actual load on an image displaying only the rated load and the actual load as shown in FIG.

Therefore, the user operates while checking the display of the rated load and the actual load, which need to be checked with particular care in connection with the winch winding operation to check the working state.
The crane operation while paying attention to the work state will not be neglected. Moreover, since only the rated load and the actual load are displayed without displaying many items indicating the work status at one time, the size of each display can be increased, and the display contents can be monitored more centrally. It is.

When a right turn operation or a left turn operation is performed, the display selector 46 of the display selection device 45 receives a signal from the right turn operation detector 42a or the left turn operation detector 42b and calculates a work state. The current turning angle from device 18;
The calculation results of the limit turning angle and the margin turning angle are selected, and an image that displays only the current turning angle, the limit turning angle, and the margin turning angle is selected from the display image storage 47, and the current turning angle and the limit turning are displayed on the image. A signal is output to the display 19 so as to display the angle and the margin turning angle. On the display 19,
In response to the signal from the display selection device 45, the values of the current turning angle, the limit turning angle, and the margin turning angle are displayed on an image displaying only the current turning angle, the limit turning angle, and the margin turning angle as shown in FIG. I do.

Therefore, the operator operates while confirming the display of the current turning angle, the limit turning angle, and the margin turning angle, for which it is necessary to check the work state with particular attention in relation to the right turning operation or the left turning operation. However, the crane operation while paying attention to the working state will not be neglected. Moreover, since only the current turning angle, the limit turning angle, and the margin turning angle are displayed without displaying many items indicating the working state at one time, the size of each display can be increased, and the display content can be further increased. It can be monitored in a concentrated manner.

The present invention is not limited to the above-described embodiment, but receives a detection signal from an operation detector for detecting another operation even when another operation is performed, and calculates the operation result from the work state operation device. The operation result of the work state related to the operation may be selected and only the selected operation result may be displayed on the display. That is, when a signal from the extension operation detector 40a is received, only the boom length of the telescopic boom 3 is displayed, and when a signal from the reduction operation detector 40b is received, only the height of the suspended load is displayed. You may make it do. Furthermore, when a signal from the raising operation detector 41a is received, only the head and the margin of the head limit are displayed, and when a signal from the falling operation detector 41b is received, only the load factor is displayed. You may make it. For those with other operation levers, a detector is provided to detect that the operation lever has been operated, and when a signal from the detector is received, the work state related to the operation is similarly changed. What is necessary is just to display it.

Further, in the above-described embodiment, the operation result of the operation state related to one operation is displayed in relation to one operation. The same operation can be performed by displaying the calculation result of the work state to be performed. For example, a case will be described in which the operation of raising the winch operation lever and the operation of raising the elevation operation lever are simultaneously performed. When these two operations are performed at the same time, when lifting a suspended load on the ground, the operation is often performed when the working radius is increased to prevent the suspended load from being lifted. That is, when the suspended load is lifted only by the operation of lifting the winch operation lever, when the load of the suspended load acts on the telescopic boom, the telescopic boom bends, and the bending increases the working radius, so that the suspended load is separated from the ground. Sometimes, two operations are performed simultaneously to lift the suspended load while correcting so that the suspended load does not move in the increasing direction of the working radius. Therefore, when signals are simultaneously received from the lifting operation detector of the winch operation lever and the raising operation detector of the raising / lowering operation lever, the indicator is caused to add a working radius in addition to the rated load and the actual load shown in FIG. It may be displayed.

Conversely, when the lifted load is lowered onto the ground, the working radius is reduced. Therefore, when signals are simultaneously received from the lowering operation detector of the winch operation lever and the lowering operation detector of the up / down operation lever. The working radius may be additionally displayed on the display in addition to the rated load and the actual load shown in FIG.

Further, when the suspended load is moved horizontally, the raising / lowering operation and the winch operation or the expansion / contraction operation and the winch operation are performed simultaneously. Therefore, when signals are received simultaneously from the undulation operation detector of the up / down operation lever and the raising operation detector of the winch operation lever, or simultaneously from the raising operation detector of the undulation operation lever and the lowering operation detector of the winch operation lever. When a signal is received, the height of the suspended load may be displayed on the display. In the case of telescopic operation and winch operation, when signals are simultaneously received from the extension operation detector of the telescopic operation lever and the lowering operation detector of the winch operation lever, or the contraction operation detector of the telescopic operation lever and the winch operation lever are detected. The height of the suspended load may be displayed on the display when a signal is simultaneously received from the lifting operation detector.

The above description has been made for the case where the height and the working radius of the suspended load are made constant in accordance with the winch operation. An operation for keeping the height and the working radius constant with respect to the tip of the boom is performed. That is, when signals are received simultaneously from the undulation operation detector of the up / down operation lever and the reduction operation detector of the expansion / contraction operation lever, or simultaneously from the up / down operation detector of the undulation operation lever and the extension operation detector of the telescopic operation lever. The working radius may be displayed on a display when a signal is received. Also, when a signal is received simultaneously from the raising operation detector of the raising / lowering operation lever and the reduction operation detector of the telescopic operation lever, or simultaneously from the falling operation detector of the raising / lowering operation lever and the extension operation detector of the telescopic operation lever. When the information is received, the head height may be displayed on the display.

By arranging the operation detector on each operation lever and displaying the work state related to the operation as described above, there is no need to display the display shown in FIG. A switch for selecting whether or not to display the information related to (1) may be arranged, and the switch may be selected by this switch. Further, when the operation state related to the operation is displayed, the display related to the operation may be displayed with a short delay when the operation lever is neutralized. In this case, when the operation is shifted to another operation, a delay related to the other operation may be displayed without providing a delay.

[0022]

The working state display device for a working machine according to the present invention which is constructed and operates as described above displays only the working state related to the operation on the display. Operations are not sparse. Moreover, since only the work status related to the operation is displayed without displaying many items indicating the work status at once, the size of each display can be increased, and the display contents can be monitored more centrally. You can do it.

[Brief description of the drawings]

FIG. 1 is an explanatory diagram illustrating a work state display device of a work machine according to the present invention.

FIG. 2 is an explanatory diagram illustrating a work state display device of a work machine according to the present invention, and is an explanatory diagram illustrating one mode of contents displayed on a display device when the present invention is applied.

FIG. 3 is an explanatory diagram illustrating a work state display device of a working machine according to the present invention, and is an explanatory diagram illustrating another mode of contents displayed on a display device when the present invention is applied.

FIG. 4 is an explanatory diagram illustrating a crane truck as a working machine.

FIG. 5 is an explanatory view illustrating a conventional work state display device of a work machine.

FIG. 6 is an explanatory diagram for explaining the contents displayed on a display device by a conventional work state display device of a work machine.

[Explanation of symbols]

 Reference Signs List 12 operation lever (expansion operation lever) 13 operation lever (up / down operation lever) 14 operation lever (turn operation lever) 15 operation lever (winch operation lever) 18 work state calculation device 19 display 20 length detector 21 undulation angle detector 22 Turn Angle Detector 23 Rope Length Detector 24 Hook Detector 25 Load Detector 44 Work Status Display Device 45 Display Selection Device

Claims (1)

[Claims] 1. A detector for detecting an operation state of a work implement driven by a plurality of operation levers, and a work state calculation for calculating a plurality of work states of the work implement in response to signals from the detectors. An apparatus, and a work state display device of a work implement including a display for displaying a calculation result, comprising: an operation detector for detecting that at least a specific operation lever of the plurality of operation levers is operated; and the operation detector. A display selecting device that selects a calculation result of a work state related to the specific operation from among calculation results calculated by the work state calculation device in response to a detection signal from and displays only the selected calculation result on the display; A work state display device for a work machine, comprising: