JPH07277699A - Fork lift control system for wireless lan - Google Patents

Abstract

PURPOSE:To control maintenance and inspection for each fork lift truck in a lump by providing a center side terminal equipment with a data processing means which prepares maintenance data for controlling each fork lift truck in a lump based on the various kinds of inspection information transmitted from each fork lift terminal equipment. CONSTITUTION:An on-vehicle terminal equipment 12 is made up of a CPU 23 acting based on a specified program, a memory storing the various kinds of data and the like, an interface 15 for communication to which an on-vehicle antenna 10 is connected, a key board 16 for inputting data and the like, a display 17 on which direction data for receiving and shipping and the like are indicated, an interface 18 for the aforesaid display, means requiring the various kinds of inspection information, and with an interface 19 to which the aforesaid means are connected and the like. As the means requiring the various kinds of inspection information, there are a battery capacity detection means 20, a brake shoe abrasion condition detecting means 21, a motor brush abrasion condition detecting means 22, a brake oil quantity detection means 23 and the like.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a wireless LAN forklift management system for transmitting and receiving data relating to loading and unloading between a center-side terminal and a forklift vehicle for charging and unloading a battery of the forklift vehicle. The present invention relates to a technology for inspecting and managing the state and mechanism for traveling operation.

[0002]

2. Description of the Related Art Conventionally, in this type of wireless LAN system, when a plurality of forklift trucks are used for loading and unloading of luggage, in order to prevent a decrease in work amount, the battery charge state of each vehicle and running operation are routinely carried out. It is necessary to maintain and inspect the mechanism of, for example, the brake shoes and manage them.

[0003]

However, for a large number of forklift trucks, the charging condition of the battery and the worn condition of the brake shoes for stopping the traveling on a daily basis,
Checking and managing many inspection points such as the hydraulic system for lifting the fork requires manpower, and it is not easy to definitely inspect and manage, and if there is an inspection error,
The start of work was delayed by the time required for the maintenance, which was a cause of lower work efficiency. The present invention has been made in order to solve the above-mentioned problems, and transmits various inspection information of a forklift truck to a terminal on the center side, and a forklift for a wireless LAN capable of collectively managing maintenance and inspection. The purpose is to provide a management system.

[0004]

In order to achieve the above object, the present invention wirelessly transmits and receives data relating to loading and unloading between a center side terminal and a terminal mounted on a plurality of forklift trucks. In a forklift management system for a wireless LAN that carries out loading and unloading operations, a forklift terminal has an inspection means for inspecting the charge state of the battery of the forklift vehicle and the state of the mechanism necessary for stopping the fork and fork operation, and this inspection means The center side terminal has maintenance means for collectively managing each forklift truck based on the various check information transmitted from the forklift terminal. Is provided with a data processing means.

[0005]

According to the wireless LAN forklift management system having the above structure, the forklift terminal checks the state of charge of the battery of the forklift vehicle and the state of the mechanism necessary for the fork operation by the checking means, The various inspection information obtained by this is transmitted to the center-side terminal device by a transmission means. In the terminal on the center side, the data processing means creates maintenance data for collectively managing each forklift truck based on various inspection information transmitted from the forklift terminal.

[0006]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS An embodiment of the present invention will be described below with reference to the drawings. FIG. 1 shows the overall configuration of a wireless LAN forklift management system. On the office side, there are a LAN control device 1 (center side terminal) for registering and managing data for loading and unloading of luggage and maintenance data for forklift trucks, and a printer 2 for printing and outputting luggage management information, error messages, and the maintenance data. Is installed. Further, in a warehouse (not shown), a rack (not shown) for loading luggage 3 to be loaded and unloaded is provided, and a forklift truck 5 moves around the warehouse to carry the luggage 3 and carry out loading and unloading work on the rack. .

The LAN control device 1 in the office is connected to the wireless terminal 6 in the warehouse by a line, and the LAN control device 1
The forklift truck 5 and the forklift truck 5 are the antenna 9 of the wireless terminal 6.
Via the antenna 10 of the on-board terminal 12, which will be described later, wirelessly receives and sends data in and out, and the forklift vehicle 5
Transmits various inspection information of the forklift truck 5 to the LAN control device 1. The LAN control device 1 has a function of totaling work result data of the forklift trucks 5 based on various received data, and creating a maintenance data for collectively managing the forklift trucks. Then, it is possible to activate the LAN control device 1 from the keyboard 1a to issue a leaving instruction, and to display the display 1b.
It is possible to display a forklift truck operation status inquiry or the like on the screen. From the printer 2, total daily / monthly work records 2
It is possible to print out a, a delivery instruction list 2b, a forklift truck maintenance data 2c, and the like.

FIG. 2 shows an on-board terminal 1 of a forklift truck 5.
2 shows the configuration. The on-board terminal 12 includes a CPU 13 that operates according to a predetermined program, a memory 14 that stores various data, a communication interface (I / O) 15 for communication to which the on-board antenna 10 is connected, and data. A keyboard 16 for inputting, etc., a display 17 for displaying entry / exit instruction data and the like, an interface (I / O) 18 for displaying the same, a device for obtaining various inspection information of the following forklift truck 5, and the like. Is connected to an interface (I / O) 19 and the like. As a device for obtaining various inspection information, a battery capacity detecting device 20, a brake shoe wear state detecting device 21, a motor brush wear state detecting device 22, which detects a state of each mechanism for stopping traveling or fork operation, The brake oil amount detection device 23 and the like are included.

In the above structure, the loading and unloading work of the luggage by the forklift truck 5 is performed by appropriately operating the forklift truck 5 while the operator sees the loading and unloading data transmitted from the LAN control device 1 and displayed on the display 17. . When the worker finishes the instructed work, he / she operates the keyboard 17 to input the work record data and gives an instruction to send the work result data. In this way, this information is transmitted to the LAN control device 1, and the warehousing / discharging information is collectively managed.

Regarding various inspection information of the forklift truck 5, the inspection information from each of the devices 20 to 23 is read by the CPU 13 and transmitted from the antenna 10 via the communication I / O 15 according to a transmission instruction. This information is received by the wireless terminal 6 from the antenna 9 and further transmitted to the LAN control device 1. The LAN control device 1 can create maintenance data for each forklift truck based on the transmitted inspection information, display the maintenance data on the display 1b, and print out the printer 2 as necessary.
Further, each inspection information can be displayed on the display 17 on the forklift truck 5 side.

FIG. 3 shows an example of a menu that can be processed by the LAN control device 1. Display this menu on display 1b
Detailed contents can be viewed by displaying the above and selecting the desired menu. The contents of the on-board unit maintenance 30 in this menu are the maintenance data for each of the above-mentioned forklift trucks. This on-board unit maintenance 30 enables collective management of a plurality of forklift trucks 5. Thus, it is possible to prevent a decrease in work amount due to safety management and insufficient battery charge. In addition, LA
The N control device 1 compares each inspection information with a normal value at the time of creating the maintenance data of the onboard equipment maintenance 30, and displays a warning if there is an abnormality or prints out on the printer 2. By doing so, it becomes possible to carry out an automatic inspection collectively for a plurality of forklift trucks 5. In addition, it has a function of storing the failure history in the memory of the LAN control device 1 and calling it for maintenance and inspection, and automatically performing supplementary charging by the worker before work after a long vacation. It can also be done.

FIG. 4 shows an on-board terminal 1 of a forklift truck 5.
2 shows an example of a menu that can be processed in 2. The detailed contents can be viewed by displaying this menu on the display 17 and selecting the desired menu. Of this menu, the self-diagnosis menu 3 is added to the maintenance / inspection 32 menu.
4 and a self-diagnosis result transmission menu 36. This self-diagnosis menu 34 is obtained from various inspection information by the above-mentioned devices 20 to 23. The self-diagnosis result transmission menu 36 shows the self-diagnosis result in the LAN control device. It is for sending to 1. In the inspection information displayed on the self-diagnosis menu 34, the inspection value is compared with the specified normal value,
If there is an abnormality, a warning may be displayed. FIG. 5 shows a display example of the on-board unit maintenance 30 of FIG. In this example, as a forklift safety information monitor, the display screen 17a displays, for each forklift vehicle, the inspection date, next inspection date, charge status, fuse, battery level, brake oil, overload, and quality of inspection data such as brake shoes. To be done. By viewing this display, the forklift trucks can be collectively maintained and inspected, and efficient driving work can be performed.

The present invention is not limited to the configuration of the above embodiment, and various modifications can be made. For example, the medium for exchanging data between the LAN control device 1 and the onboard terminal 12 is not limited to wireless, An IC card or the like may be used. In this case, an IC card may be mounted on the on-board terminal 12 during the loading / unloading work, and loading / unloading data may be written in the IC card at any time, and the IC card may be passed to the LAN control device 1 after the loading / unloading work. The "transmission means" described in the claims includes a case of passing data in such a manner. Also,
In the above, the case where the operator operates the keyboard 16 to input the work result data performed by the forklift truck 5 has been described. However, a barcode is provided on the loading / unloading rack and a reader for reading the barcode is used as the forklift truck 5. It is installed in the car and the data related to loading and unloading is automatically displayed on the car terminal 1.
2 may be input.

[0014]

As described above, according to the wireless LAN forklift management system of the present invention, the charging states of the batteries of a plurality of forklift trucks, the worn states of the brake shoes and the motor brushes required for the traveling stop operation, The inspection information of the hydraulic system of each part required for fork operation is transmitted from the forklift terminal to the terminal on the center side, and maintenance data for collective management can be quickly and quickly
It can be created accurately and easily. Therefore, battery charging, maintenance inspection, and repair of the forklift truck can be appropriately performed, safety management can also be appropriately performed, and it is possible to reduce the inability of the forklift truck to operate during the working hours, and improve the efficiency of the loading / unloading work. Furthermore, it is possible to easily create an operating schedule of a forklift truck, etc., which enables efficient work management.

[Brief description of drawings]

FIG. 1 is an overall configuration diagram of a wireless LAN forklift management system according to an embodiment of the present invention.

FIG. 2 is a block diagram of an on-board terminal in the system.

FIG. 3 is a diagram showing an example of a menu that can be processed by the LAN control device of the same system.

FIG. 4 is a diagram showing an example of a menu that can be processed by the onboard terminal of the system.

FIG. 5 is a diagram showing a display example of onboard equipment maintenance.

[Explanation of symbols]

 1 LAN control device (terminal device on the center side) 2c Forklift car maintenance data 5 Forklift car 12 On-board terminal device 20 Battery capacity detection device 21 Brake shoe wear state detection device 22 Motor brush wear state detection device 23 Brake oil amount detection device

Claims (1)

[Claims] 1. A wireless LAN forklift management system for wirelessly transmitting and receiving data relating to warehousing and unloading between a center-side terminal and a terminal mounted on a plurality of forklift trucks, the forklift management system comprising: The terminal device is an inspection means for inspecting the state of charge of the battery of the forklift truck and the state of the mechanism required for traveling stop and fork operation, and transmission means for transmitting various inspection information obtained by this inspection means to the center side terminal device. The center side terminal is equipped with data processing means for creating maintenance data for collectively managing each forklift truck based on various inspection information transmitted from the forklift terminal. Forklift management system for LAN.