JPH0439880Y2 - - Google Patents

Description

[Detailed explanation of the idea] [Industrial application field]

This invention relates to an improvement of a cargo handling/loading weight monitoring device that can automatically measure the amount of cargo loaded in a bucket during cargo handling using a bucket loader or the like.

[Conventional technology]

For example, as a cargo handling/loading weight monitoring device,
- In the loading machine work control device of No. 21637,
A configuration is disclosed in which the elevation angle of an arm and the lifting force of a hydraulic cylinder of a shovel bucket cart can be detected, and the load amount of the shovel bucket cart can be weighed and displayed. However, in the above configuration, only the amount of load inside the shovel bucket cart is calculated, so the amount loaded into the shovel bucket cart can be calculated or integrated, but it is not possible to load a certain amount onto the transporter to avoid overloading. Can not. In other words, since the maximum loading weight of the transporter is predetermined, there is a risk of overloading if the shovel bucket is simply added up each time the shovel bucket is loaded. The overload must be removed and discharged to the specified load capacity. If the shovel bucket mentioned above is used to scoop the load from the carrier's loading platform, a large load will be placed on the carrier, causing damage to the vehicle, shaking, or overturning. There are drawbacks such as an unstable state. Further, there is a drawback that the cargo piled up on the platform collapses and scatters near the transporter.

[Problem that the invention attempts to solve]

This idea was devised as a result of intensive research in view of the above circumstances, and its main problem was to calculate the weight of the cargo to be handled in the bucket, and to determine the loading capacity of the transporter that loads it. It is determined whether or not loading will result in overloading, and if it is overloaded, the overloaded cargo of the transporter is discharged from the bucket before loading onto the transporter, and the appropriate amount of cargo is transferred to the transporter. We have developed a loading/unloading weight monitoring device that prevents overloading by loading the cargo into the container, and also allows checking from the outside by making it possible to check the loaded weight not only on the loading machine side but also on the transporting machine side when making the above judgment. It is about providing.

[Means to solve the problem]

In order to achieve the above-mentioned problems, this invention is installed in a loading machine such as a loader, and automatically measures the weight of the cargo in the bucket and calculates the weight loaded onto the transport machine. The arithmetic processing means for determining whether or not the load exceeds a preset loading capacity of the transporter is equipped with an external input means and an external display means capable of inputting an identification number, a loaded weight, and a driver's code number of the transporter. In the cargo handling/loading weight monitoring device, (A) the arithmetic processing means has (a) a loading amount calculation means for calculating an integrated value of the loading weight loaded onto the transporter by a bucket; Calculate the remaining loading amount, which is the difference between the preset appropriate loading amount and the cumulative value of the loaded weight loaded on the transporter, and calculate the remaining loading amount and the amount of cargo scooped into the bucket. (b) has an overloading determination means that compares the weight of the cargo to be handled in the bucket and determines whether or not the weight of the cargo to be handled in the bucket is greater than the remaining loading amount; has a first external display means for displaying whether or not the loader is overloaded than the remaining loading amount; The following technical measures are taken: (c) having a recording device that records the data input by the external input means together with the loaded weight.

[Effect]

The weight of the loaded cargo in the bucket of the loading machine is automatically measured and the cumulative value is calculated each time it is loaded into the transporter, so the remaining amount of cargo to be loaded is calculated from the difference with the preset loading capacity of the transporter. can do. When the overload determining means determines that loading the cargo in the bucket onto the transporter will result in overloading, the first external display means notifies the operator of the loading machine. Therefore, the operator discharges the cargo in the bucket, reloads it into the bucket, automatically measures it, and if it is displayed as appropriate, the operator executes the loading. Never. Further, the weight of the cargo in the bucket that has been measured is added by the loading amount calculation means. This loaded weight or remaining loaded amount is displayed on the outside of the loading machine on the second external display means, so that it can be monitored by an external worker such as on the transporter side. Further, the loaded weight etc. thus loaded are recorded in the recording device together with the data inputted by the external input means, and can be used as data for work management.

【Example】

Preferred embodiments of this invention will be described below with reference to the drawings. The bucket loader 1 illustrated as an example of a cargo handling/loading machine in FIG. 1 includes a bucket 3 at the tip of a lift arm 2,
It has a well-known configuration including a lift cylinder 4 that drives the bucket up and down. The loader 1 is equipped with the cargo handling/loading weight monitoring device of this invention. The loading/unloading weight monitoring device includes a position sensor 5 consisting of a limit switch etc. for detecting the height position of the bucket 3, and a strong gauge etc. installed in the hydraulic system of the lift cylinder 4 to detect the hydraulic pressure of the cylinder. pressure sensor 6. These sensors 5 and 6 convert their detection values into electrical signals and output them to the microcomputer 7. The computer 7 has a system configuration including a sensor input mechanism 8, an arithmetic processing means 9, an output device drive mechanism 11, and a power supply mechanism 12. The arithmetic processing means, so-called microprocessor (hereinafter referred to as CPU) 9 converts the electrical signals inputted from each sensor 5, 6 through the input mechanism 8 of that system into a load, thereby converting the electric signal into a load. 3
Read and calculate the actual cargo handling weight. at the same time,
The read weight is compared with a preset maximum loading capacity of a transporter, for example, a dump truck T as shown in FIG. That is, the CPU 9 includes a bucket load measuring means 9A that automatically measures the weight of the cargo being handled in the bucket 3.
and loading amount calculation means 9B that adds (integrates) the weight loaded onto the dump truck T by the bucket truck 3.
and an overload determining means 9C for determining whether or not the cargo in the bucket 3 will be overloaded when loaded onto the dump truck T. Here, the overloading determination means 9C subtracts the integrated value of the loaded weight that has already been loaded from the maximum loading capacity of the dump truck T to obtain the remaining loading amount, and the weight of the unloaded cargo that has been scooped into the bucket 3 and measured. It is determined whether loading the cargo in the bucket 3 onto the dump truck T will result in overloading or not by comparing the remaining loading amount. In this CPU 9, an external input means 19 is connected to the input side via a programmable interface 18, and a data recording printer 2 is connected to the output side via the interface 20.
4 is connected. The external input means 19 in the illustrated example consists of a keyboard, and inputs information such as the vehicle identification number and driver code number of a transporter, for example, a dump truck T, customer name, cargo name, etc.
Setting and program control of various data such as loading weight (dump loading amount), specific gravity and moisture content of cargo handling, calling necessary data during cargo handling work and at the end of the work, etc., and transmitting the called data to the printer 24. Have it printed out. In this case, the keyboard 19 has numbers as well as
Although it is possible to install alphanumeric symbols or other symbols with function keys for calling functions, it is preferable to use only numeric symbols from the viewpoint of ease of operation in the field. In this case, vehicle identification number, driver code number,
Customer names, programs, etc. can all be identified using coded numbers. On the other hand, the output device drive mechanism 11 includes an internal display 13A serving as a first external display means for displaying the cargo handling measurement weight value based on the calculation result of the CPU 9;
An external display 13B serving as external display means is linked. The internal display 13A includes loading status display lamps 15 to 1 of the weight display section 14, as shown in more detail in FIG.
7 and is installed in the driver's seat of the loader 1, etc. In addition, the loader operator is able to instantly check the total loaded weight, remaining loaded amount, etc. for the dump truck T during the cargo handling process, as will be described later. The external display 13B is much larger than the internal display 13A, and is installed outside the loader 1.
By digitally displaying the loaded weight using a signal from the CPU 9, the truck operator etc. can easily check the loaded weight even from a distance. In the internal display 13A, the lamps 15 to
17 is an overload determining means 9 for cargo handling in the bucket 3
A red lamp 15 as an example of an overload external display means that is activated when it is determined that the load is appropriate in C.
It consists of a green lamp 16 indicating an example of an appropriate external display means that is activated when it is determined that the load is appropriate, and a yellow lamp 17 that is an example of an insufficient external display means that is activated when it is determined that the load is still insufficient. . A flowchart of the system configuration as described above is shown in FIG. That is, the system is started by turning on the power switch. Next, all system initial settings and dump load capacity settings are performed using the keyboard 19. By initializing the system in this case, the customer name, vehicle identification number, driver code number, cargo handling product name, cargo handling specific gravity and moisture content ratio, and other programs are set. On the other hand, the dump truck T
This means setting in advance the maximum loading capacity or the tonnage of cargo to be loaded within that range. In this case, the allowable range setting switch 19 is used to previously set the allowable error range of the total loading amount for the dump truck T within the range of, for example, ±0.1t to 0.9t. With this setting, the total weight of the cargo to be loaded onto the dump truck is read in advance by the microcomputer 7, and the remaining amount to be loaded is displayed on the weight display section 14 of the output device 13. This is the remaining loading amount displayed in the flowchart. At this point, the vehicle is still waiting for loader loading. In this state, when the reset switch is turned on and the load bucket 3 starts loading, the amount of cargo in the bucket is automatically measured. That is, when the bucket truck 3 loaded with cargo such as earth and sand is lifted up and the bucket truck is displaced to a height at which the cargo can be loaded onto the dump truck T, the position sensor such as a limit switch that is pushed by the lift arm 2 or the like changes the height position. Detected at 5. At the detected height position, bucket 3
The pressure sensor 6 detects the hydraulic pressure applied to the lift cylinder 4 while supporting the load inside the lift cylinder 4 . The height of the bucket 3 and the oil pressure of the lift cylinder 4 have a certain correlation with the amount of cargo inside the bucket. From the correlation, if the oil pressure value of the lift cylinder 4 at a specific extension point is detected,
From the detected value, the actual load amount in the bucket can be instantly determined even during cargo handling work. Based on such a principle, the weight of the cargo to be handled in the bucket is calculated by the bucket load measuring means 9A of the CPU 9. This load becomes the measured weight of the load in the bucket cart loaded onto the dump truck T. The measured weight value is digitally displayed in tonnage on the weight display section 14 of the internal display 13A and on the external display 13B. This is the weight display in terms of loaded weight in the flowchart. In this way, the cargo in the bucket cart 3 is loaded onto the dump truck T, and each time the loading is repeated, the total loading amount calculation in the flowchart is calculated.
This is executed by the loading amount calculation means 9B of the CPU 9. The total loaded weight value of the calculation result is displayed on the weight display 14 of the internal display 13A and the external display 13B each time.
and is printed out by the printer 24. At the same time, the overload determining means 9C of the CPU 9 compares the total loaded weight of the calculation result with a preset maximum loaded amount of the dump truck T to determine the remaining loaded amount. As a result, the overload determining means 9C determines whether the cargo handling in the bucket 3 is "overloaded,""appropriate," or "insufficient." That is, if the maximum loading capacity of the truck T is not reached even when the cargo in the bucket cart that is being loaded is repeatedly loaded onto the dump truck T, the yellow lamp 17 for indicating insufficient loading on the internal display 13A flashes. Therefore, as long as the yellow lamp 17 is flashing, the loader operator can smoothly repeat the loading operation onto the dump truck T without interrupting the loading operation. As a result of this repeated operation, if the cargo in the bucket is of appropriate weight just before the loading onto the dump truck T is completed, the green lamp 16 flashes. In this case, by directly loading the contents of the bucket onto the dump truck T, the actual total loading weight on the truck becomes an appropriate total loading weight that matches the maximum loading amount within an allowable range. Eventually, the loading operation is completed, so by performing the termination process at that point, the system of this invention returns to the initial setting state again in the flowchart. However, if the cargo handling in the bucket immediately before the end of loading is determined to be overloaded, the red lamp 15 for indicating overload flashes to instruct the discharge of the cargo in the bucket. In this case, overloading of the dump truck T by the loader 1 can be prevented by the loader operator discharging the cargo in the bucket according to the instructions. At the same time, cargo handling corresponding to the remaining loading amount at that time is loaded onto the bucket 3 again, and when the overloading determination means determines that the loading weight is appropriate and the green lamp 16 blinks, it is confirmed that the loaded weight is appropriate. By loading the cargo in the bucket cart 3 onto the dump truck T, the weight of the cargo in the bucket cart 3 is accumulated by the loading amount calculation means 9B, and the total weight loaded onto the truck becomes the appropriate amount for loading. The work is finished. In the above embodiment, the weight value displayed on the weight display 14 of the internal display 13A may be either the remaining loading amount or the additional loading weight. The settings can be made by selecting a program using the keyboard 19. In the case of the remaining loading amount, the CPU 9 displays the answer weight value obtained by subtracting the cargo handling weight in the bucket from the maximum loading capacity of the dump truck T, and from then on, each time loading into the dump truck T is repeated, the weight value is displayed. The answer weight value obtained by subtracting the cargo handling weight in the bucket from the displayed weight value may be displayed and printed out each time. Therefore, in this case, the loader operator can immediately check the remaining loading amount simply by reading the weight display value on the marking section 14. On the other hand, in the case of additional loading weight, dump truck T
Each time loading is repeated, the weight of cargo in the bucket is added to the display, so there is an advantage that the weight loaded onto the truck can be accurately grasped at all times during the loading process. Note that the above system can also be used as a simple arithmetic machine (calculator) by adding an appropriate program.

[Effect of the idea]

As described above, in this invention, it is determined whether or not the cargo being scooped into a bucket and loaded onto a transporter will be overloaded before loading, so it is possible to prevent the transporter from becoming overloaded. can. Therefore, since the loading machine can always load the appropriate amount onto the transporter, there is no harm to the transporter than in the past, where once the cargo is loaded onto the transporter, it is scooped up with a bucket and then discharged. This is extremely useful as it can prevent the cargo from dissipating. This loading amount is recorded together with the data input by the external input means, so it can be used for work management. In addition, external display means are provided inside and outside the loading machine, so that the operator of the loading machine can prevent overloading and easily load the appropriate amount. Further, outside the loading machine, a dump truck operator or the like can see the loaded weight or remaining amount and confirm the loading operation.

[Brief explanation of the drawing]

The drawings show a preferred embodiment of the cargo handling/loading weight monitoring device of this invention; FIG. 1 is a system block diagram, FIG. 2 is a front view of the internal display, and FIG. 3 is a system flowchart. 1...bucket loader, 3...bucket, 5,
6...Sensor, 9...Arithmetic processing means, 13A...
Internal display, 13B...External display, 19...Keyboard, 24...Printer, T...Dump truck.

Claims (1)

[Scope of Claim for Utility Model Registration] A device installed in a loading machine such as a loader that automatically measures the weight of the cargo in the bucket and calculates the weight loaded onto the transporter, and also calculates the weight loaded onto the transporter. A cargo handling/loading weight monitor equipped with an external input means and an external display means that can input the identification number of the transporter, the loaded weight, and the driver's code number to the arithmetic processing means that determines whether the load exceeds a preset load capacity. In the device, the arithmetic processing means includes a loading amount calculating means for calculating the cumulative value of the loaded weight loaded onto the transporter by the bucket, and a preset appropriate loading amount of the transporter and the amount loaded onto the transporter. Calculate the remaining loading amount which is the difference between the cumulative value of the loaded weight and compare the remaining loading amount with the weight of the cargo scooped into the bucket. an overload determination means for determining whether the weight of the cargo being handled in the bucket is greater than the remaining loading amount; a display means, a second external display means provided outside the loading machine to numerically display the accumulated loaded weight or remaining loaded amount, and record the data inputted by the external input means together with the loaded weight. A loading/unloading weight monitoring device comprising: a recording device for monitoring cargo handling/loading weight;