JP3289030B2 - Control device for forklift - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a forklift used in a loading area having different maximum traveling speeds and maximum lifts, and can be automatically changed by the forklift itself without any operation by a driver. The present invention relates to a forklift control device for reducing a burden on a driver.

[0002]

2. Description of the Related Art Conventionally, when a forklift is used at a cargo handling place where the maximum traveling speed and the maximum lift are different, a sign is provided at the different place, and a setting change provided on a vehicle body when the driver looks at the sign. It was changed by operating the switch.

[0003]

Conventionally, as described above, a driver operates a setting change switch while looking at a sign provided at a loading / unloading place having a different maximum traveling speed or maximum lift. However, when there are many cargo handling places having different maximum traveling speeds and maximum lifts, the operation is cumbersome, and there is a problem that the cargo handling efficiency is reduced.

[0004]

SUMMARY OF THE INVENTION The present invention relates to a forklift used at a cargo handling site having different maximum traveling speeds and maximum lifts. An information transmitting means for issuing a command signal for changing a set value is arranged, and an information receiving means for receiving a command signal from the information transmitting and providing means, and a maximum speed and a maximum height are set by the command signal from the information receiving means. The above-mentioned problem has been solved by providing a control means for changing the value on the vehicle body of the forklift.

[0005]

The forklift provided with the information receiving means is located in the vicinity of the place where the information transmission giving means for issuing the command signal for changing the set values of the maximum speed and the maximum lift for each place where the maximum speed and the maximum lift are different is provided. At the time of passing, a command signal from the information transmitting / receiving means is transmitted to the control means via the information receiving means, so that the operation is performed only within the maximum speed or the maximum height at the place.

[0006]

DESCRIPTION OF THE PREFERRED EMBODIMENTS An embodiment of the present invention will be described below with reference to FIGS. 1 to 3. FIG. 1 shows a forklift used in the present invention.
In particular, a description will be given of a reach type forklift as an example. 1 is a reach-type forklift, 2 is a vehicle body of the reach-type forklift 1, 3 is a mast erected in front of the vehicle body 2, 4
Is a fork that moves up and down along the mast 3 and 5 is a car body 2
, A straddle arm formed on both the left and right sides, 6 is a road wheel rotatably mounted on the straddle arm 5, 7 is a drive wheel disposed below the vehicle body 2, and 8 is provided on the vehicle body 2 Information receiving means.

FIG. 2 illustrates a warehouse as an example of a cargo handling place using the forklift of the present invention, which has different maximum traveling speeds and maximum lifts. The warehouse 9 has a different interior ceiling height and passage width. There are other warehouses.
Reference numeral 10 denotes an entrance of the warehouse 9 provided with information transmission means 12 on a vertical inner wall 11 of the entrance 10;
The information content is the maximum speed and maximum lift.

Now, a bar code is used as the information transmission / providing means 12, and a bar code reading means is used as the information receiving means 8. Other signal sources such as radio waves and magnetism can also be used.

When a reach-type forklift equipped with a bar code reading means as the information receiving means 8 approaches the entrance 10 of the warehouse 9, the bar code of the information transmission means 12 fixed to the vertical inner wall 11 of the entrance 10 The bar code reading means reads the information (step S
1) If there is a barcode input in step S1, it is determined whether or not the maximum speed needs to be changed (step S2). If a change is required, no data change is made (step S3), and conversely If it is not necessary, the process proceeds to the next step to determine whether or not the maximum lift data exists (step S).
4) If the change is required, the maximum lift data is not changed (step S5). If the change is not required, the process proceeds to the next step to determine whether the rack data has been changed (step S6). If the data needs to be changed, the rack data is not changed (step S7), and if no data needs to be changed, the process is completed.

[0010]

As described above, according to the present invention, in a forklift used in a cargo handling place having different maximum traveling speeds and maximum lifts, the maximum speed and the maximum lift are set for each place where the maximum speed and the maximum lift are different. An information transmission providing means for issuing a command signal for changing the set value of the information transmission means and an information receiving means for receiving a command signal from the information transmission providing means; Since the control means for changing the set value is provided in the body of the forklift, the forklift itself can automatically change them without operating the driver one by one, and the burden on the driver can be reduced. Moreover, the efficiency of cargo handling has been improved.

[Brief description of the drawings]

FIG. 1 is a perspective view of a forklift used in the present invention.

FIG. 2 shows a perspective view of a warehouse entrance used in the present invention.

FIG. 3 shows a flowchart of the present invention.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 Reach type forklift 2 Body 3 Mast 8 Information receiving means 9 Warehouse 12 Information transmission giving means

Claims (4)

(57) [Claims] In a forklift used at a cargo handling location having different maximum running speeds and maximum lifts, a command signal for changing a set value of the maximum speed and the maximum lift for each location where the maximum speed and the maximum lift are different is provided. An information receiving means for receiving the command signal from the information transmitting means, and a control means for changing the set values of the maximum speed and the maximum lift by the command signal from the information receiving means. A forklift control device provided on a forklift body. 2. The forklift control device according to claim 1, wherein said information transmission means is a bar code, and said information receiving means is a bar code reading means. 3. A forklift control device according to claim 1, wherein said information transmitting means is a magnetic signal, and said information receiving means is a magnetic signal reading means. 4. A forklift control device according to claim 1, wherein said information transmission means is a radio signal, and said information receiving means is a radio signal receiving means.