JP3852994B2 - Work status display device for work equipment - Google Patents

Description

[0001]
BACKGROUND OF THE INVENTION
The present invention relates to a work status display device for a working machine.
[0002]
[Prior art]
As this type of work machine, there are a crane car, an aerial work vehicle, a digging pillar car, and the like. As shown in FIG. 4, the crane vehicle A has a swivel 2 disposed on a vehicle 1 so as to be turnable, and a telescopic boom 3 is disposed on the swivel 2 so as to be able to move up and down. The telescopic boom 3 is configured such that an intermediate boom 5 is inserted into the base boom 4 and a front boom 6 is sequentially inserted into the intermediate boom 5 so that the telescopic boom 3 can be expanded and contracted by an appropriate telescopic device. Thus, the telescopic boom 3 can be driven up and down with respect to the swivel base 2. A winch 8 is disposed on the swivel base 2, and a wire rope 9 fed out from the winch 8 passes through a sheave disposed at the distal end portion of the telescopic boom 3, and the hook 10 is suspended from the distal end portion of the telescopic boom 3. Yes. The driver's seat 11 arranged on the swivel base 2 extends and retracts the telescopic boom 3, undulates and turns, and the telescopic operation lever 12, the hoisting operation lever 13, the turning operation lever 14, and the winch operation lever 15 ( The hoisting operation lever 13, the turning operation lever 14, and the winch operation lever 15 are not shown.) By operating the operation levers 12, 13, 14, and 15, the load suspended from the hook 10 is appropriately positioned. The crane can be operated by moving it to.
[0003]
By the way, the driver's seat 11 of such a crane vehicle is provided with a work state display device 16 for displaying the work state of the crane vehicle. As shown in FIG. 5, the work state display device 16 includes detectors 17 for detecting the operation states of the crane vehicles driven by the plurality of operation levers 12, 13, 14, and 15, and the detectors. 17 is provided with a work state calculation device 18 that receives a signal from 17 and calculates a plurality of work states of the crane truck, and a display 19 that displays the calculation results.
[0004]
That is, the detectors 17 that detect the operation state of the crane vehicle include, for example, a boom length detector 20 that detects the boom length of the telescopic boom 3, and a hoisting angle detector 21 that detects the hoisting angle of the telescopic boom 3. , A turning angle detector 22 for detecting the turning angle of the turntable 2 (the turning angle of the telescopic boom 3), a rope feed amount detector 23 for detecting the feed amount of the wire rope 9 fed from the winch 8, and a telescopic boom tip. A detector such as a multiplying detector 24 of the fiber rope 9 wound between the sheave and the hook 10 and a load detector 25 for detecting a load acting on the hoisting cylinder 7 is applicable. In addition to the above, an overhang width detector for detecting the outrigger width of the outrigger if necessary, a jib length detector for detecting the length and undulation angle of the joint jib added to the tip of the telescopic boom 3, and a jib undulation angle detector, etc. There is a detector.
[0005]
The work state calculation device 18 receives signals from the detectors 17 and, for example, boom length, undulation angle, work radius, lift, rated load, actual load, load factor, jib length, jib undulation angle, current turning The angle, limit turning angle, margin turning angle, etc. are calculated and obtained.
[0006]
The display 19 displays the calculation results obtained by the operation state calculation device 18 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 lift is 29, the rated load is 30, the actual load is 31, the load factor is 32, and the jib length is 34. The jib undulation angle is displayed as 35, the current turning angle as 36, the limit turning angle as 37, and the marginal turning angle as 38. The load factor is displayed at 33 even with a bar meter.
[0007]
When carrying out crane work with a crane vehicle provided with such a work state display device 16, the crane operator looks at the work state display device 16 and confirms the work state.
[0008]
[Problems to be solved by the invention]
However, as shown in FIG. 6, since many items representing the working state are displayed on the display 19 at a time, the size of each display is reduced, and special attention should be paid in relation to the operation of the operator. It is troublesome for the operator to operate while confirming the display of items that need to confirm the work state, and the crane operation while observing the work state is obscured.
An object of the present invention is to provide a work state display device for a working machine that solves the above-described problems.
[0009]
[Means for Solving the Problems]
In order to achieve the above object, the working status display device for a working machine according to the present invention includes a detector for detecting an operating state of the working machine driven by a plurality of operation levers, and a signal from each detector. In a work state calculation device that receives and calculates a plurality of work states of the work machine, and a work state display device of the work machine that includes a display that displays the calculation result,
An operation detector that detects that at least a specific operation lever is operated among the plurality of operation levers, and the identification among the calculation results calculated by the work state calculation device in response to a detection signal from the operation detector And a display selection device for selecting only the calculation result of the work state related to the operation and displaying the selected calculation result on the display.
[0010]
DETAILED DESCRIPTION OF THE INVENTION
Hereinafter, embodiments of the present invention will be described with reference to FIGS. Note that reference numerals 1 to 15 and reference numerals 17 to 38 illustrated and described with reference to FIGS. 4 to 6 in the prior art are the same in the following description and will not be described in detail. 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 an elevation operation detector that detects that the elevation operation lever 13 has been raised, and 41b is an elevation operation detector that detects that the elevation operation lever 13 has been lowered. 42a is a right turn operation detector that detects that the turn operation lever 14 is turned right, and 42b is a left turn operation detector that detects that the turn operation lever 14 is turned left. 43a is a winch hoisting operation detector that detects that the winch operating lever 15 has been hoisted, and 43b is a winch lowering operation detector that detects that the winch operating lever 15 has been lowered.
[0011]
44 is a work state display device, which is different in that a display selection device 45 described below is added to the work state display device 16 described in the prior art in addition to the operation detector. . Reference numeral 45 denotes a display selection device, which includes a display selector 46 and a display image storage unit 47. The display selector 46 receives a signal from the specific operation detector, selects a calculation result of the work state related to the specific operation from the calculation results from the work state calculation device 18, and selects the selected calculation result A display image for displaying only the image is selected from the display image memory 47 and the selected calculation result is displayed on the display 19.
[0012]
For example, when the winch operation lever 15 is wound up, the display selector 46 of the display selection device 45 receives a signal from the winch winding operation detector 43a, and outputs the calculation results of the rated load and the actual load from the work state calculation device 18. Then, an image that displays only the rated load and the actual load is selected from the display image memory 47, and a signal is output to the display unit 19 so that the rated load and the actual load are displayed on the image. The display 19 receives a signal from the display selection device 45 and displays the value of the rated load and the actual load on an image that displays only the rated load and the actual load as shown in FIG.
[0013]
Therefore, it is necessary to check the display of the rated load and actual load that need to be checked with particular care in connection with the winch hoisting operation. There is nothing. Moreover, since only the rated load and the actual load are displayed without displaying many items representing the work status at a time, the size of each display can be increased, and the display contents can be monitored more centrally. It is.
[0014]
When a right turn operation is performed or when 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 receives a signal from the work state calculation device 18. Select the calculation result of the current turning angle, limit turning angle, and marginal turning angle, select an image that displays only the current turning angle, limit turning angle, and margin turning angle from the display image memory 47, and display the current turning on the image. A signal is output to the display 19 to display the angle, the limit turning angle, and the marginal turning angle. The display 19 receives a signal from the display selection device 45, and displays the current turning angle, the limit turning angle, and the margin turning on the image that displays only the current turning angle, the limit turning angle, and the margin turning angle as shown in FIG. Displays the angle value.
[0015]
Therefore, it is necessary to check the current turning angle, the limit turning angle, and the marginal turning angle that need to be checked with particular care in connection with the right turn operation or the left turn operation. The crane operation with caution is not left behind. Moreover, since only the current turning angle, limit turning angle, and marginal turning angle are displayed without displaying many items representing the work status at a time, the size of each display can be increased, and the display contents can be further increased. It can be monitored centrally.
[0016]
Note that the present invention is not limited to the above-described embodiment, and receives a detection signal from an operation detector that detects this operation even when another operation is performed, and among the calculation results from the work state calculation device, You may make it display only the calculation result which selected the calculation result of the working state relevant to operation, and was selected on the said indicator. That is, when the signal from the extension operation detector 40a is received, only the boom length of the telescopic boom 3 is displayed, and when the signal from the reduction operation detector 40b is received, only the height of the suspended load is displayed. You may make it make it. Further, when a signal is received from the raising operation detector 41a, only the head height and the marginal height with respect to the head limit are displayed. When a signal is received from the falling operation detector 41b, only the load factor is displayed. You may make it do. For other control levers, a detector that detects that the control lever has been operated is provided, and when a signal is received from the detector, the work status related to the operation is similarly displayed. It is only necessary to display it.
[0017]
In the above embodiment, the calculation result of the work state related to one operation is displayed in relation to one operation, but the work state related to the plurality of operations is also performed when a plurality of operations are performed simultaneously. The calculation result can be displayed in the same manner. For example, a case where the winding operation of the winch operation lever and the raising operation of the raising / lowering operation lever are simultaneously operated will be described. When these two operations are performed simultaneously, when the suspended load on the ground is to be lifted, it is often operated 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 this bending increases the working radius, and the suspended load is separated from the ground. In some cases, two operations are simultaneously performed to lift the suspended load while correcting the suspended load so that it does not move in the increasing direction of the working radius. Therefore, when a signal is simultaneously received from the winding operation detector for the winch operation lever and the raising operation detector for the hoisting operation lever, the working radius is added to the display in addition to the rated load and the actual load shown in FIG. You may make it display.
[0018]
On the other hand, when the suspended load is lowered to the ground, the working radius decreases, so even when a signal is received simultaneously from the winch operation lever lowering operation detector and the hoisting operation lever falling operation detector, the display In addition to the rated load and actual load shown in FIG. 2, the working radius may be added and displayed.
[0019]
Furthermore, when the suspended load is moved horizontally, the hoisting operation and the winch operation or the telescopic operation and the winch operation are performed simultaneously. Therefore, when a signal is simultaneously received from the tilting operation detector of the hoisting operation lever and the hoisting operation detector of the winch operating lever, or simultaneously from the hoisting operation detector of the hoisting operation lever and the lowering operation detector of the winch operating lever. When the 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 telescopic operation lever extension operation detector and winch operation lever lowering operation detector, or the telescopic operation lever reduction operation detector and winch operation lever When a signal is simultaneously received from the hoisting operation detector, the height of the suspended load may be displayed on the display.
[0020]
The above describes the operation when the height and working radius are made constant with respect to the suspended load in accordance with the winch operation, but when applied to a work machine such as an aerial work vehicle, the tip of the telescopic boom The operation is performed so that the height and the working radius are constant. That is, when a signal is simultaneously received from the raising / lowering operation detector of the hoisting operation lever and the reduction operation detector of the telescopic operation lever, or simultaneously from the raising operation detector of the hoisting operation lever and the extension operation detector of the telescopic operation lever. When the signal is received, the working radius may be displayed on the display. Also, when signals are simultaneously received from the raising / lowering operation detector of the hoisting operation lever and the contraction operation detector of the telescopic operation lever, or simultaneously from the tilting operation detector of the hoisting operation lever and the extension operation detector of the telescopic operation lever. When receiving, the height of the head may be displayed on the display.
[0021]
If the operation detector is arranged on each operation lever as described above to display the work state related to the operation, the time shown in FIG. It is only necessary to arrange a switch for selecting whether to display or not to select the display.
Further, when displaying the work state related to the operation, the display related to the operation may be displayed with a short delay when the operation lever is neutral. In this case, when the operation is shifted to another operation, a delay is not provided and a display related to the other operation may be displayed.
[0022]
【The invention's effect】
Since the working state display device of the working machine of the present invention configured and operated as described above displays only the working state related to the operation on the display, the crane operation while observing the working state is obscured. There is nothing. Moreover, since only the work status related to the operation is displayed without displaying many items representing the work status at a time, the size of each display can be enlarged, and the display contents can be further concentrated and monitored. It can be done.
[Brief description of the drawings]
FIG. 1 is an explanatory diagram for explaining a working state display device for a working machine according to the present invention.
FIG. 2 is an explanatory diagram for explaining a working status display device for a working machine according to the present invention, and is an explanatory diagram for explaining one form of contents displayed on a display when the present invention is applied.
FIG. 3 is an explanatory diagram for explaining a working status display device for a working machine according to the present invention, and is an explanatory diagram for explaining another embodiment of the contents displayed on the display when the present invention is applied.
FIG. 4 is an explanatory diagram illustrating a crane vehicle as a work machine.
FIG. 5 is an explanatory diagram for explaining a work status display device of a conventional work machine.
FIG. 6 is an explanatory diagram for explaining the contents displayed on a display by a work status display device of a conventional work machine.
[Explanation of symbols]
12 Operation lever (Extension / retraction operation lever)
13 Operation lever (undulation control lever)
14 Operation lever (turning operation lever)
15 Operation lever (winch operation lever)
DESCRIPTION OF SYMBOLS 18 Work condition calculating device 19 Display 20 Length detector 21 Relief angle detector 22 Turning angle detector 23 Rope length detector 24 Multiplier detector 25 Load detector 44 Work condition display device 45 Display selection device

Claims (1)

Each detector that detects the operating state of each work machine driven by a plurality of operation levers, a work state calculation device that receives a signal from each detector and calculates a plurality of work states of the work machine, and a calculation result In the working status display device of the working machine equipped with a display for displaying
An operation detector that detects that at least a specific operation lever is operated among the plurality of operation levers, and the identification among the calculation results calculated by the work state calculation device in response to a detection signal from the operation detector A work state display device for a working machine, comprising: a display selection device that selects a calculation result of a work state related to the operation and displays only the selected calculation result on the display.

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