JP2578113Y2 - Simulated display device for lifting allowable load of mobile crane with telescopic boom - Google Patents

Description

[Detailed description of the invention]

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a display device for simulating a lifting allowable load of a mobile crane having a telescopic boom.

[0002]

2. Description of the Related Art A mobile crane having a telescopic boom is
The crane work is performed while traveling to the work site.However, the amount of outrigger overhang, the operating posture of the telescopic boom, and the lifting load required or required at the destination work site are known in advance. However, since there was no way to know in advance whether such a crane operation was within the range of the capability of the mobile crane, there was a case where a lack of capability was first noticed when attempting to perform the crane operation at a work site. In this case, it is necessary to return the mobile crane from the work site to another mobile crane having a large return ability, which has caused a significant reduction in work efficiency.

[0003]

SUMMARY OF THE INVENTION The present invention is directed to an overrigger which is allowed or required at a work site of a moving destination.
If the operating position of the telescopic boom and the lifting load are known in advance, it is determined in advance whether such crane operation is within the capability of the mobile crane based on this information. It provides a simulation display of the allowable load of lifting of a mobile crane that can be verified (prior to moving), and aims to improve the work efficiency by eliminating the need to notice the lack of capability of the mobile crane at the work site for the first time. is there.

[0004]

In order to achieve the above-mentioned object, the present invention provides a simulation display device for a lifting allowable load of a mobile crane having a telescopic boom as follows. A simulated display device for a lifting allowable load used in a mobile crane having a swivel mounted on a vehicle having an outrigger capable of overhanging and a telescopic boom mounted on the swivel so as to be able to move up and down. Overhang information input means for manually inputting data on the amount of overhang, a pair of parameters for specifying the operating posture of the telescopic boom
Boom length input device to manually enter the length of the telescopic boom as
And manually enter the elevating angle or working radius of the telescopic boom.
A boom operating posture information input means comprising an elevation angle input device or a working radius input device, and an arithmetic means for receiving and processing the data from the overhang information inputting means and the boom operating posture information input means. , And a display for receiving and displaying a signal from the calculating means, wherein the calculating means is such that the overhang amount of the outrigger of the mobile crane is the overhang amount corresponding to the input of the overhang information input means, and The lifting allowable load of the mobile crane when the operating posture of the telescopic boom becomes the operating posture corresponding to the input of the boom operating posture information input means, the data from the overhang information input means and the boom operating posture information input means. And a signal for displaying a numerical value of the lifting allowable load related to the calculation on the display unit is output. And configured to, the indicator,
A simulation display device of a lifting allowable load of a mobile crane having a telescopic boom, wherein the lifting allowable load is numerically displayed.

[0005]

According to the present invention, there is provided a simulated display device for lifting allowable load of a mobile crane having a telescopic boom according to the present invention, which measures the amount of outrigger extension and the operating posture of the telescopic boom that are allowed or required at a moving work site. By manually inputting from the overhang information input means and the boom operating posture information input means, respectively, the lifting allowable load of the mobile crane is displayed in a comparable manner on the display, so the crane operator can determine the lifting allowable load and the displayed lifting allowable load. Thus, it is possible to compare the planned load to be lifted by the mobile crane. Therefore, it can be determined in advance whether or not the capacity of the mobile crane is insufficient.

[0006]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS FIG. 1 shows an embodiment of a simulated display device for lifting allowable load of a mobile crane having a telescopic boom according to the present invention .
2 will be described with reference to FIG . FIG. 2 shows a mobile crane equipped with the simulated display device of the present invention .
The telescopic boom 4 is attached to the swivel 3 so as to be able to move up and down. Reference numeral 4a denotes an up-and-down cylinder disposed between the swivel base 3 and the telescopic boom 4 at appropriate positions. The telescopic boom 4 is configured to be able to be driven to expand and contract by a telescopic cylinder ( not shown), and the swivel base 3 is configured to be able to be driven to rotate by an appropriate driving device. The outriggers 1a and 1b are attached to the front position of the vehicle 2 so as to project to the right and left of the vehicle, respectively. The outriggers 1c and 1d are attached to the rear position of the vehicle 2 so as to project to the right and left of the vehicle, respectively, so that they can touch the ground. Each outrigger 1a
The overhang amount of ~ 1d can be grounded with an arbitrary overhang amount depending on the installation location of the mobile crane.

FIG . 1 shows a simulated display device of a lifting allowable load provided in the mobile crane shown in FIG. 2 and described above. In FIG. 1 , reference numeral 5 denotes overhang information input means for manually inputting data relating to the amount of overhang of the outriggers 1a to 1d, and inputs whether the outriggers 1a to 1d are in the maximum overhang state or the minimum overhang state. Things. Reference numeral 6 denotes a boom operating posture information input unit for manually inputting data relating to a pair of parameters for specifying the operating posture of the telescopic boom 4. In this embodiment, the boom operating posture information input means 6 includes a boom length input device 6L for manually inputting the length L of the telescopic boom 4 as a pair of parameters for specifying the operating posture of the telescopic boom 4; While the elevation of Θ is configured with at Okoshiossha angle input unit 6Θ for manual input, as another example, undulating fulcrum telescopic boom 4 tip length L and the working radius of the telescopic boom 4 (telescopic boom 4 Horizontal distance to the part) R, angle of elevation of the telescopic boom 4
The data relating to a pair of parameters such as and a working radius R may be manually input. When these parameters are determined, the operating posture of the telescopic boom 4 is specified. Reference numeral 7 denotes scheduled load information input means for manually inputting data on a suspended load to be lifted by a mobile crane, that is, a scheduled load w.

[0008] Reference numeral 8 denotes the overhang information input means 5,
This is an arithmetic unit that receives data from the boom operating posture information input unit 6 and the planned load information input unit 7 and performs arithmetic processing. Reference numeral 9 denotes a display for receiving and displaying a signal from the calculating means 8. The calculating means 8 determines that the overhang amount of the outrigger of the mobile crane corresponds to the input of the overhang information input means (in the embodiment, all the outriggers 1a to 1d are in the maximum overhang state or the minimum overhang state). And the lifting allowable load W of the mobile crane when the operating posture of the telescopic boom 4 becomes the operating posture corresponding to the input of the boom operating posture information input means 6.
m is calculated on the basis of data from the overhang information input means 5 and the boom operating posture information input means 6, and the lifting allowable load Wm related to the calculation is numerically displayed on the display 9. Is output. Further, the arithmetic means 8 is configured to output a signal for numerically displaying the input data (scheduled load w) from the scheduled load information input means 7 on the display 9. The display unit numerically displays the lifting allowable load Wm and the planned load w according to the input of the planned load information input means 7 so as to be comparable.

The calculating means 8 calculates a lifting allowable load W
m is calculated based on the data from the overhang information input means 5 and the boom operating posture information input means 6 and a signal is output to display the result on the display 9. The means 8 includes a movable type for each combination of each boom length of the telescopic boom 4 and each elevation angle for each overhang state of the outriggers 1a to 1d (all outriggers 1a to 1d are at maximum overhang state and at minimum overhang state). A storage unit 10 for storing the allowable lifting load Wm of the crane is provided. Data from the overhang information input unit 5 and the boom operating posture information input unit 6 are indexed from the lifting allowable load group stored in the storage unit 10. The lifting allowable load Wm corresponding to the input data is read as a signal, and the read lifting allowable load Wm is displayed on the display 9.
The signal is output as a signal that can be displayed.

Next, the operation will be described. If the amount of outrigger overhang allowed or required at the work site, the operating position of the telescopic boom and the lifting load are known in advance,
It is verified beforehand (before actually performing the crane operation at the work site) whether the mobile crane equipped with the load state simulation display device shown in FIG. 1 and described above has sufficient ability to perform such a crane operation. When attempting to do so, the known information is manually input from the overhang information input means 5, the boom operating posture information input means 6, and the planned load information input means 7. Then, the calculating means 8 calculates on the basis of the information and outputs data of the lifting allowable load Wm and the planned load w to the display 9. Then, the lifting allowable load Wm and the planned load w are displayed on the display 9 in a comparable manner. Therefore, the crane operator can determine in advance whether or not the mobile crane satisfies the required crane operation by looking at the display on the display 9.

In the above embodiment, the planned load information input means 7 for manually inputting data on the planned load w to be lifted is provided, and the planned load w manually input to the planned load information input means 7 is provided. Is numerically displayed on the display 9 together with the allowable lifting load Wm. Of course, the planned load information input means 7 may be omitted and only the allowable lifting load Wm may be numerically displayed on the display 9. is there. In this case, by recognizing the magnitude relationship between the lifting allowable load Wm displayed on the display 9 and the planned load recognized by the crane operator, the capability of the mobile crane is sufficient for the planned crane operation.
It can be determined in advance whether or not.

Further, an embodiment in which some of the components of the simulation display device of the allowable lifting load according to the present invention are implemented by using the components of the safety device required to be equipped in the mobile crane will be described. deep. A mobile crane having a telescopic boom is equipped with a safety device as shown in FIG . This safety device is provided with overhang length detecting means 11a to 11d for detecting the overhang length of the outriggers 1a to 1d.
d, operating posture detecting means 12 for detecting a pair of parameters for determining the operating posture of the telescopic boom 4 (boom length detector 12a for detecting the boom length L of the telescopic boom 4, and detecting the elevation angle の of the telescopic boom 4) And an up-and-down cylinder 4a of the telescopic boom 4.
A moment detecting means 13 for detecting a load acting on the information processing means, a calculating means 14 for receiving and calculating a detection signal from each of these detecting means, and a display 15 for displaying a calculation result of the calculating means. The arithmetic means 14 is provided with the same storage unit 10 as the arithmetic means 8 of the present invention described above. Then, the calculating means 14 calculates the working radius calculating section 1
The work radius R is calculated and calculated (R = LcosΘ) by fetching the detection value of the operating posture detecting means 12 into 6. The work radius R, the boom length signal L from the operating posture detecting means 12, and the signal from the overhang length detecting means 11 are used as index signals to calculate the lifting allowable load Wm of the mobile crane in the working posture at that time. The lifting allowable load Wm according to the calculation is converted to the moment conversion unit 17.
In step (1), the work radius R calculated by the work radius calculation unit 16 is used to convert the allowable moment into a corresponding value Mm, and the allowable moment value Mm is compared with the actual moment M from the boom moment detector 13 by the comparing means 18. ing. The calculating means 14 displays M / Mm, which is the comparison result of the comparing means 18, on the display 15.

The simulation display device of the lifting allowable load of the mobile crane according to the present invention is a calculation device 14 and a display 15 of such a safety device (a safety device that generates the lifting allowable load W in the calculation device 14). Can be applied. In this case, as shown by a virtual line in FIG.
The index signal entered in the storage means 10 of the arithmetic means 14 of the safety device is inputted from the overhang information input means 5 and the boom operating posture information input means 6, and
The calculation as described in the embodiment of the present invention is performed in the calculation means 14 by inputting the information from the planned load information input means 7 to the calculation means 14, and the calculation result is displayed on the display 15. What should I do?

[0014]

[Effects of the Invention] The simulation display device of the lifting allowable load of the movable crane having the telescopic boom according to the present invention configured as described above is used for the extension amount of the outrigger which is allowed or required at the work site of the moving destination, and the operation of the telescopic boom. If the attitude and lifting load are known in advance, the information can be manually entered to determine whether such crane operation is within the capability of the mobile crane, and the lifting can be performed on the display.
Is displayed and the expected load
It is possible to immediately compare and recognize the magnitude relationship. Therefore,
Mobile crane capacity for planned crane operations
Since it can be verified in advance whether or not it is sufficient, it is effective in improving the ability of crane work.

[Brief description of the drawings]

FIG. 1 is an explanatory view of a simulation display device of a lifting allowable load of a mobile crane having a telescopic boom of the present invention.

FIG. 2 is an explanatory view of a mobile crane to which the simulation display device of a lifting allowable load according to the present invention is adopted.

FIG. 3 is an explanatory view of another embodiment of the present invention.

[Explanation of symbols]

1a to 1d Outrigger 2 Vehicle 3 Turning table 4 Telescopic boom 4a Raising and lowering cylinder 5 Overhang information input means 6 Boom operating posture information input means 7 Scheduled load information input means 8 Calculation means 9 Display

Claims (1)

(57) [Scope of request for utility model registration] A liftable load display device for use in a mobile crane having a swivel rotatably mounted on a vehicle having an outrigger that can be installed overhanging and a telescopic boom mounted on the swivel so as to be able to move up and down. Te, overhanging information input means for manually inputting data relating to the amount of projection of the outrigger, and a pair of parameters specifying the operation position of the telescopic boom
Boom length input device to manually input the length of the telescopic boom
Manually enter the angle or working radius of the telescopic boom.
Boom operating posture information input means comprising an elevation angle input device or a working radius input device; an arithmetic means for receiving and processing data from the overhang information input means and the boom operating posture information input means; and a signal from the arithmetic means And a display for receiving and displaying the overhang, wherein the calculating means is such that the overhang amount of the outrigger of the mobile crane is the overhang amount corresponding to the input of the overhang information input means, and the operating posture of the telescopic boom is The mobile crane is configured to calculate a lifting allowable load based on data from the overhang information input means and the boom operation attitude information input means when the operating posture corresponding to the input of the boom operation attitude information input means is attained. And outputs a signal for numerically displaying the lifting allowable load related to the calculation on the display unit. Cormorants constitutes the indicator, lifting the allowable load configured to numeric displays of mobile crane having a telescopic boom, characterized in that that lifting the allowable load of the simulated display.