JP3776517B2 - Outrigger overhang width confirmation device - Google Patents

Description

[0001]
BACKGROUND OF THE INVENTION
The present invention relates to an outrigger extension width confirmation device for a work machine in which outriggers are arranged on a vehicle in front, rear, left, and right, respectively, and the outriggers can be extended and stored by an operation device.
[0002]
[Prior art]
FIG. 4 shows an example of an aerial work vehicle as a work vehicle having an outrigger overhang width confirmation device. The aerial work vehicle is provided with a swivel base 43 that can turn freely on the vehicle unit 42, a telescopic boom 44 that can be raised and lowered on the swivel base 43, and a work base 45 that can swing freely at the tip of the telescopic boom 44. Provided.
[0003]
The operation device 41 of the outrigger 40 is installed on the vehicle portion 42, and the outrigger extension width confirmation device 53 is installed in the vicinity of the operation device 41. FIG. 5 shows a detailed view of the outrigger operation device 41 and the outrigger extension width confirmation device 53 as viewed from the direction A in FIG. The outrigger overhang confirmation device 53 has a display device 34 for displaying the outrigger overhang width.
[0004]
A safety device 52 is installed on the swivel base 43. In addition to the outrigger extension width signal, the safety device 52 is input with a turning angle signal, an undulation angle signal, a boom length signal, and a load signal. The safety device 52 calculates the load factor of the working state from the input signal and the stored data, and outputs an alarm or stop signal.
[0005]
FIG. 3 is a block diagram for explaining signal transmission related to the outrigger extension width confirmation device 53. The outrigger overhang width confirmation device 53 includes an outrigger overhang width detector 1 and an outrigger overhang width confirmation unit 54. A signal from the outrigger overhang width detector 1 is sent to the detection unit 31 in the outrigger overhang width confirmation unit 54. A signal is sent from the detection unit 31 to the display unit 34, and the display unit 34 displays the outrigger extension width. A signal is sent from the detection unit 31 to the transmission unit 32, and a signal is sent from the transmission unit 32 to the reception unit 21 inside the safety device 52 via the slip ring 4. A signal is sent from the reception unit 21 to the calculation unit 22, and the calculation of the load factor is performed in the calculation unit 22.
[0006]
The operator of the outrigger confirms the content of the outrigger extension width signal sent to the safety device 52 by checking the display on the display unit 34 inside the outrigger extension width confirmation unit 54 while operating the operating device 41. It can be done.
[0007]
[Problems to be solved by the invention]
However, even if there is an abnormality in the communication from the outrigger extension width confirmation device 53 to the safety device 52, the display of the display unit 34 does not change, so the operator of the outrigger cannot notice the abnormality. That is, even if the calculation unit 22 of the safety device 52 calculates the load factor of the working state with an erroneous outrigger extension width signal and outputs an erroneous alarm or stop signal, the outrigger operator does not know. There is no. This causes the following problems.
[0008]
1) When an overhang width signal larger than the actual outrigger overhang width is input, the safety device judges that the range is larger than the allowable load determined from the actual outrigger overhang width. May lead to serious accidents such as fall or damage.
2) When an overhang width signal smaller than the actual outrigger overhang width is input, the safety device will regulate in a range smaller than the allowable load determined from the actual outrigger overhang width, reducing the work range, The load capacity is also reduced, causing a reduction in work efficiency.
[0009]
The present invention has been made on the basis of the above situation, and can confirm whether or not the signal from the outrigger overhang detector 1 has been correctly recognized by the safety device 52. The object is to provide an apparatus.
[0010]
[Means for Solving the Problems]
In order to achieve the above object, the invention of the claims of the present application includes the following problem solving means.
[0011]
That is, the outrigger extension width confirmation device according to the first aspect of the present invention includes a safety device in which the outrigger extension state as a parameter for determining the performance of the work implement is input by a signal from the outrigger extension width detector. An outrigger extension width confirmation device used in a working machine, wherein the outrigger extension width detector is configured to display a detection result of an outrigger extension width detector on a display device provided in the vicinity of the outrigger operation device. the signal from the detector through the safety device so as to input to the display device, configured to display on the display device the overhang width of the outrigger safety device recognizes actual outrigger overhang at outrigger operation It is possible to compare whether or not the width and the outrigger extension width displayed on the display device match .
[0012]
The outrigger extension width signal recognized by the safety device with the above configuration is sent from the safety device to the outrigger extension width display device. As a result, according to the outrigger extension width confirmation device of the present invention, it is possible to perform the outrigger operation while confirming the outrigger extension width signal actually recognized by the safety device on the display unit.
[0013]
In addition, the outrigger extension width confirmation device of the invention of claim 2 includes a safety device that inputs an outrigger extension state as a parameter for determining the performance of the work implement by a signal from the outrigger extension width detector. In the outrigger overhang width confirmation device used in the working machine, a direct signal from the outrigger overhang width detector is compared with an outrigger overhang width signal recognized by the safety device obtained through the safety device. Comparing means and notifying means for notifying abnormality when both signals do not match are configured to automatically determine whether or not the safety device correctly recognizes the outrigger extension width .
[0014]
With the above configuration, the outrigger extension width signal recognized by the safety device is sent from the safety device to the outrigger extension width comparison calculation means, and at the same time, a direct signal from the outrigger extension width detector is sent. Then, the comparison calculation means compares the two signals and notifies the abnormality when the two signals do not match. As a result, according to the outrigger extension width confirmation device of the present invention, when there is an abnormality in the outrigger extension width signal actually recognized by the safety device, the operator of the outrigger can know the abnormality by notification.
[0015]
DETAILED DESCRIPTION OF THE INVENTION
In describing the embodiment of the present invention, the description will be given below with an example of an aerial work vehicle shown and described in FIG. Accordingly, the same reference numerals are used for portions common to the present invention and the conventional ones, and a detailed description thereof is omitted, and the following embodiments of the present invention are described.
[0016]
FIG. 1 and FIG. 2 are block diagrams illustrating signal transmission related to the outrigger extension width confirmation device according to the embodiment of the present invention.
[0017]
An outrigger extension width confirmation device according to an embodiment corresponding to the invention of claim 1 is configured as shown in FIG. 1, for example. The block diagram showing the signal transmission related to the outrigger extension width confirmation device is different in the signal transmission path to the display unit 34 as compared to the block diagram (FIG. 3) for explaining the prior art.
[0018]
Reference numeral 2 denotes a safety device, which is configured by adding a transmission unit 23 to the safety device 52 described in the prior art. 3A is an outrigger extension width confirmation unit, and is configured by adding a receiving unit 33 to the outrigger extension width confirmation unit 54 described in the prior art. Reference numeral 23 denotes a transmission unit, which receives the same signal as the signal sent from the reception unit 21 to the calculation unit 22 and outputs the same signal to the reception unit 33. A receiving unit 33 receives a signal transmitted from the transmitting unit 23 via the slip ring 4 and outputs the signal to the display unit 34. The display unit 34 displays the outrigger extension width based on the signal (outrigger extension width signal recognized by the safety device) sent from the reception unit 33.
[0019]
Since it is configured as described above, the outrigger extension width recognized by the safety device 2 can be displayed on the display device 34. Therefore, whether the safety device 2 correctly recognizes the outrigger extension by comparing whether or not the actual outrigger extension width matches the outrigger extension width displayed on the display device 34 during the outrigger extension operation. It is possible to confirm whether or not it is possible to work safely.
[0020]
An outrigger extension width confirmation device according to an embodiment corresponding to the invention of claim 2 is configured, for example, as shown in FIG. The block diagram for explaining the signal transmission related to the outrigger extension width checking device is the same as the block diagram (FIG. 1) for explaining the technique of claim 1 but the safety device 2 is the same. The width confirmation device 3 is different. 3B is an outrigger extension width confirmation unit, which is different from the outrigger extension width confirmation unit 3A shown and described in FIG. 1 in that the display unit 34 is not provided and a comparison operation unit 35 is added. . Reference numeral 35 denotes a comparison operation unit (corresponding to the comparison means of claim 2), which receives a signal from the detection unit 31 and a signal from the reception unit 33, and outputs a signal if the two signals do not match. It is like that. An informing means 5 comprises a warning light, a sound alarm, a stop device for stopping the operation of the work machine, etc., and operates upon receiving a signal from the comparison calculation unit 35 to notify the operator of the abnormality. .
[0021]
The embodiment of the present invention according to claim 2 configured as described above operates as follows. That is, the comparison calculation unit 35 determines whether or not the signal of the outrigger extension width recognized by the safety device 2 and the signal detected by the outrigger extension width detector 1 match. 5 can inform the operator that there is an abnormality. In particular, in this case, even if the operator does not check the actual outrigger extension width, it is possible to automatically determine whether or not the safety device 2 correctly recognizes the outrigger extension width. Can do.
[0022]
In this embodiment, the signal transmission via the slip ring between the outrigger overhang confirmation device 3 and the safety device 2 may of course be multiplex transmission.
[0023]
【The invention's effect】
Since it is configured and operates as described above, the outrigger extension width confirmation device of the present invention can determine whether or not the outrigger extension width recognized by the safety device matches the actual extension width. It will bring work, and the effect is great.
[Brief description of the drawings]
FIG. 1 is a block diagram for explaining signal transmission related to an outrigger extension width confirmation device according to a first aspect of the present invention;
FIG. 2 is a block diagram for explaining signal transmission related to an outrigger extension width confirmation device according to a second aspect of the present invention;
FIG. 3 is a block diagram for explaining signal transmission related to a conventional outrigger overhang width confirmation device;
FIG. 4 is an explanatory diagram of an example of an aerial work vehicle according to the invention.
FIG. 5 is a view taken in the direction of arrow A in FIG.
[Explanation of symbols]
DESCRIPTION OF SYMBOLS 1 Outrigger extension width | variety detector 2,52 Safety device 21,33 Reception part 22 Calculation part 23,32 Transmission part 3,53 Outrigger extension width confirmation apparatus 3A, 3B, 54 Outrigger extension width confirmation unit 31 Detection part 34 Display Part 35 comparison operation part 4 slip ring 40 outrigger 41 operating device 5 notification means

Claims (2)

An outrigger overhang width confirmation device used in a work machine including a safety device that inputs an outrigger overhang state as a parameter for determining the performance of the work machine with a signal from an outrigger overhang width detector, In what is configured to display the detection result of the outrigger extension width detector on a display device provided in the vicinity of the outrigger operation device,
The outrigger and the signal from the overhang width detector so as to input to the display device via the safety device, configured to display on the display device the overhang width of the outrigger safety device recognizes, during outrigger operation An outrigger overhang width confirmation device for a working machine, wherein an actual outrigger overhang width and an outrigger overhang width displayed on a display device can be compared . In the outrigger overhang width confirmation device used in the work machine provided with a safety device that inputs the outrigger overhang state as a parameter for determining the performance of the work machine with a signal from the outrigger overhang width detector,
Comparing means for comparing and calculating the direct signal from the outrigger extension width detector and the outrigger extension width signal recognized by the safety device obtained via the safety device, and an abnormality when both signals do not match An outrigger overhang width confirmation device for a working machine, comprising: an informing means for informing, and automatically determining whether the safety device correctly recognizes the outrigger overhang width.

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