JPH10305997A - Forklift system using identification tag - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a forklift system that is able to easily carry out the wiring between a fork-lift bar antenna and a controller, and also to read data without reference to a pallet sense, besides used with such an identification tag as being favorable in terms of cost. SOLUTION: This forklift system is equipped with a pallet attached with an identification tag, and a fork lift 11 inserting two forks 18 and 19 into this pallet for supporting and conveying a load, and in this constitution, two fork- lifting bar antennas 21 and 21 are attached to one side or both frames 13 and 14 of both symmetrical front wheels installed in parallel with these forks 18 and 19, then a bar antenna for ID tag use is attached to a left or right side wall of the pallet. In addition, these fork-lift bar antennas 21, 21 and the ID tag bar antenna are set up in positions to be opposed with each other when both these forks 18 and 19 are inserted into the pallet.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a forklift system using an ID tag which is suitable for a cargo handling operation in which a pallet unit is used for a warehouse operation using a forklift.

[0002]

2. Description of the Related Art Hitherto, a forklift system using an ID tag has been proposed (for example, Japanese Patent Application Laid-Open No. 5-1 / 1993).
No. 55600).

[0003] This forklift system uses a wireless LA.
In the N system, an ID tag 52 is used as means for detecting a pallet number and a location number. That is, as shown in FIGS. 4 and 5, the ID tag bar antenna 5 of the ID tag 52 is
3 and a forklift bar antenna 57 is attached to the lower surface of a lift bracket 56 that moves the mast 55 up and down, and the ID tag bar antenna 53 and the forklift bar antenna 57 are parallel to each other along the width direction of the forklift. It has a fixed structure.

[0004]

As described above, in the conventional forklift system, the bar antenna 57 for forklift is mounted on the lower surface of the lift bracket 56, so that the bar antenna 57 for forklift moves up and down together with the fork 58. Become.

[0005] Therefore, there is a problem that the wiring between the forklift bar antenna 57 and a controller (not shown) mounted on the forklift is very troublesome, and there is a risk of disconnection.

[0006] In addition, the center digit 51a of the pallet 51 has an ID.
When the fork is inserted from the opposite side of the pallet 51 because the tag 52 is attached, the data of the ID tag 52 cannot be read because the forklift bar antenna 57 and the ID tag bar antenna 53 do not face each other. There was a problem. To solve this problem,
The ID tag 52 may be attached to the end opposite to the center girder 51a of the ID tag 52.
It is not preferable to use a plurality of ID tags 52 in order to increase the cost.

SUMMARY OF THE INVENTION The present invention has been made in order to solve such a problem. It is an object of the present invention to easily perform wiring between a bar antenna for a forklift and a controller and to read data regardless of a pallet direction. It is an object of the present invention to provide a forklift system using an ID tag that is possible and cost-effective.

[0008]

According to a first aspect of the present invention, there is provided a forklift system using an ID tag, comprising: a pallet to which an ID tag is attached; and a fork inserted into and supported by the pallet. A forklift bar antenna is mounted on one or both frames of the left and right front wheels provided in parallel with the fork, and an ID tag bar antenna is mounted on the left or right side wall of the pallet. It was done. That is, since the forklift bar antenna does not move up and down, wiring to the controller can be easily performed.

According to a second aspect of the present invention, there is provided a forklift system using the ID tag according to the first aspect, wherein the forklift bar antenna and the I-type bar antenna are connected to each other.
The D-tag bar antenna is arranged at a position facing the fork when the fork is inserted into the pallet. Thus, when the fork is inserted into the pallet, the forklift bar antenna and the ID tag bar antenna are closest to each other (the centers of the antennas are almost the same).
Therefore, data can be reliably read.

According to a third aspect of the present invention, there is provided a forklift system using an ID tag, wherein the bar antenna for the ID tag is provided on a left or right side wall of the pallet in the front-rear direction. Is provided at the center of the. Thus, the forklift bar antenna and the ID tag bar antenna always face each other, regardless of whether the fork is inserted from the front or the back of the pallet.

[0011]

Embodiments of the present invention will be described below with reference to the drawings. FIG. 1 is a perspective view of a forklift constituting a forklift system using an ID tag of the present invention, FIG. 2 is a perspective view of a pallet having an ID tag attached thereto, and FIG. FIG.

An ID tag 8 and an ID tag bar antenna 9 are mounted on the pallet 1 at the center of the left or right side wall 2 in the front-rear direction (indicated by an arrow P in FIG. 2). That is, the concave groove 3 is formed at the center of the side wall 2 in the front-rear direction, and the ID tag 8 and the ID tag bar antenna 9 are attached so as to fit into the concave groove 3.

In this embodiment, the forklift 11 is a forklift of a type on which an operator stands and rides. That is, the front wheel frames 13 and 14 are provided to protrude forward from the left and right ends of the lower front part of the vehicle body 12,
Forklift bar antennas 21 and 21 are attached to the front wheel frames 13 and 14, respectively.

A lift bracket 17 is attached to a pair of left and right masts 15 and 16 attached to the front surface of the vehicle body 12, and a pair of left and right forks 18 and 19 are attached to the lift bracket 17.

Forklift bar antennas 21 and 21
When the forks 18, 19 are inserted from the insertion holes 4, 4 (or 5, 5) between the girders of the pallet 1,
As shown in FIG. 3, the pallet 1 is attached so as to face the ID tag bar antenna 9 attached to the side wall 2.

Thus, even if the forks 18 and 19 are inserted from the insertion ports 4, 4 or 5 and 5 on either side of the pallet 1, the ID tag bar antenna 9 is mounted on the forklift attached to the right front wheel frame 14. Bar antenna 2
1 or one of the forklift bar antennas 21 attached to the left front wheel frame 13.

On the upper surface of the body 12, an onboard machine 22,
A controller 23 and a laser scanner 24 are provided, and a roof frame 20 extending upward from the vehicle body 12 is provided.
, A wireless device 25 is provided. The connection between the forklift bar antennas 21 and 21 and the controller 23 is as follows.
What is necessary is just to wire through the inside of the left and right front wheel frames 13 and 14 and the inside of the vehicle body 12. That is, since the mounting positions of the forklift bar antennas 21 and 21 are inside the fixed front wheel frames 13 and 14, there is no need to provide the wiring itself movably unlike a conventional forklift system. The forklift bar antenna 2
The connection portions to the controller 21 and the controller 23 are protected by elastic rubber or the like.

Although not shown, the on-board unit 12 includes a keyboard and a touch panel type screen unit.
The controller 23 reads / reads data from / to the ID tag 8.
It controls the lights. The laser scanner 24 is
It reads a bar code for shelf management (not shown).

Next, transmission and reception of data between the ID tag 8 attached to the pallet 1 and the controller 23 of the forklift 11 will be described. When the forks 18 and 19 are inserted into one of the insertion openings (for example, 4 and 4) of the pallet 1 and the pallet 1 is drawn to the lift bracket 17 side (ie, the driver's seat side), the pallet 1 is attached to the front wheel frame 14 of the forklift 11. The forklift bar antenna 21 and the ID tag bar antenna 9 attached to the pallet 1 approach and are parallel to each other. Thereby, the ID tag 8 is connected to the forklift bar antenna 21.
Is transmitted as power via the ID tag bar antenna 9 and the data information written therein is transmitted from the ID tag bar antenna 9. The transmission data is received by the forklift bar antenna 21, sent to the controller 23, and used for subsequent data processing.

[0020]

According to a first aspect of the present invention, there is provided a forklift system using an ID tag, comprising: a pallet having an ID tag attached thereto; and a forklift for inserting, supporting, and transporting the fork into the pallet. The forklift bar antenna does not move up and down because the forklift bar antenna is attached to one or both frames of the left and right front wheels provided in parallel and the ID tag bar antenna is attached to the left or right side wall of the pallet. Therefore, wiring with the controller can be easily performed, and there is no fear of disconnection due to vertical movement of the wiring.

In the forklift system using the ID tag according to the second aspect of the present invention, the bar antenna for the forklift and the bar antenna for the ID tag are arranged so as to face each other when the fork is inserted into the pallet.
When the fork is inserted into the pallet, the forklift bar antenna and the ID tag bar antenna come closest to each other (the centers of the antennas almost coincide with each other), so that the data can be reliably read.

Also, in the forklift system using the ID tag according to the third aspect of the present invention, the bar antenna for the ID tag is provided on the left or right side wall of the pallet at the center in the front-rear direction. Regardless of whether the fork is inserted from the front or the back of the pallet, the bar antenna for the forklift and the bar antenna for the ID tag always face each other, so that a wireless LAN system using the ID tag can be realized without reducing the efficiency of the cargo handling work.

[Brief description of the drawings]

FIG. 1 is a perspective view of a forklift constituting a forklift system using an ID tag of the present invention.

FIG. 2 is a perspective view of a pallet to which an ID tag constituting a forklift system using the ID tag of the present invention is attached.

FIG. 3 is a plan view showing a state where a fork is inserted into an insertion opening of a pallet.

FIG. 4 is a side view of a forklift and a pallet constituting a conventional forklift system.

FIG. 5 is a perspective view of a pallet constituting a conventional forklift system.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 Pallet 2 Side wall 8 ID tag 9 Bar antenna for ID tag 11 Forklift 13,14 Front wheel frame 18,19 Fork 21 Bar antenna for forklift

Claims (3)

[Claims] A pallet to which an ID tag is attached;
A forklift for inserting, supporting, and transporting the fork into the pallet, and a forklift bar antenna is attached to one or both of the left and right front wheels provided in parallel with the fork, and a left or right side wall of the pallet. A bar antenna for an ID tag is attached to the forklift system using the ID tag. 2. The forklift system using an ID tag according to claim 1, wherein the bar antenna for forklift and the bar antenna for ID tag are arranged at opposite positions when the fork is inserted into the pallet. . 3. The forklift system using an ID tag according to claim 2, wherein the ID tag bar antenna is provided at a central portion in a front-rear direction on a left or right side wall of the pallet.