JPH0719219U - Stacker crane communication device - Google Patents

Abstract

(57) [Summary] [Purpose] Even when three or more cranes travel on a single route, work instructions should be given to each crane without fail. [Structure] A plurality of cranes 1, 2, 3 traveling on one path, and a transmitter 10 for sending a work instruction signal to a crane 1 at the end of the cranes 1, 2, 3 are provided. Each crane 1, 2, 3 is provided with a communication device 10 that sends a work instruction signal to an adjacent crane, searches for a work instruction for its own crane, and executes the work given by its own crane. A control unit is provided.

Description

[Detailed description of the device]

[0001]

[Industrial applications]

 The present invention relates to a stacker crane communication device. Particularly, in a system in which a plurality of stacker cranes travel on one route, the present invention relates to a communication device of a stacker crane that can give a work instruction to each stacker crane reliably.

[0002]

[Prior art]

 FIG. 2 is a schematic plan view for explaining a communication device of a conventional stacker crane.

In FIG. 1, R is a traveling rail laid on the floor of the building, and two stacker cranes 1 and 2 travel along the traveling rail R. Reference numerals 5 and 6 are transmitters provided at traveling ends R1 and R2 of the traveling rail R. The transmitter 5 gives a work instruction to the stacker crane 1, and the transmitter 6 gives a work instruction to the stacker crane 2. Each stacker crane 1, 2 has a receiver (not shown) for receiving work instructions from the transmitters 5, 6. Incidentally, T1 and T2 are rack shelves installed on both sides of the traveling rail R so as to face each other.

In such a system, work instructions are individually given to the stacker cranes 1 and 2 from the transmitters 5 and 6, and the stacker cranes 1 and 2 are loaded and unloaded based on the work instructions. It is designed to work.

[0005]

[Problems to be solved by the device]

 The above-mentioned conventional stacker crane communication device was suitable for traveling up to two cranes on one route, but when traveling more than three cranes on one route, Had such a problem.

That is, as shown in FIG. 3, when the three stacker cranes 1, 2, 3 are arranged on the traveling rail R, the three cranes are arranged on the traveling rail R in a straight line. Therefore, there is a problem that the work instruction is not transmitted to the middle crane 3.

An object of the present invention is to solve the above-mentioned problems and to reliably give a work instruction to each crane even when traveling three or more cranes on one route. It is to provide a communication device for a stacker crane.

[0008]

[Means for Solving the Problems]

 In order to achieve the above-mentioned object, the present invention comprises a plurality of cranes traveling on one route and a transmitter for sending a work instruction signal to one of these cranes at the end, and each crane is provided with Has a communication unit that sends a work instruction signal to the adjacent crane, and a control unit that searches the work instruction for the own crane and executes the work given to the own crane. did.

[0009]

[Operation effect]

 Since the present invention has the above-mentioned configuration, it has the following operational effects.

The work instruction is given to each crane as follows. First, the transmitter sends work instructions to the crane at the end of the multiple cranes. Since each crane is equipped with a communication device that sends a work order signal to an adjacent crane, it is possible to send work order signals from the crane at the end to the next crane in sequence. Become.

Since each crane is provided with a control unit that searches for a work instruction for its own crane and executes the work given to its own crane, each crane is assigned to its own crane. Do this if there is a work order.

Therefore, according to the crane communication device of the present invention, there is an effect that a work instruction can be reliably given to each crane even when three or more cranes travel on one path.

[0013]

【Example】

 Embodiments of the present invention will be described below with reference to the drawings.

FIG. 1 is a schematic plan view for explaining an embodiment of a communication device for a crane according to the present invention. The same parts as those in the conventional example are designated by the same reference numerals.

In this embodiment, three stacker cranes 1, 2, 3 are arranged on one path.

In the figure, 10 is a transmitter provided at the traveling end R1 of the route, and is adapted to give a work instruction to the end crane 1 out of the three stacker cranes 1, 2 and 3. ing. The transmitter 10 is connected to a higher-level computer (not shown) and is capable of sending a work instruction for each crane by one transmission according to an instruction from this computer. The work instruction signal sent from the transmitter 10 includes identification information so that the cranes 1, 2 and 3 can identify which crane the work instruction is directed to.

Reference numerals 21, 22 and 23 are communication devices provided in the cranes 1, 2 and 3, respectively, and are adapted to send a work instruction signal to the adjacent cranes. Therefore, the work instruction signal first given to the crane 1 is sequentially sent from the crane 1 to the crane 3 and from the crane 3 to the crane 2 by the communication devices 21, 22, and 23.

Reference numerals 31, 32, and 33 are CPUs as control units mounted on the respective cranes 1, 2, and 3, and use the identification information included in the work instruction signal to issue a work instruction to the own crane. It searches, and if there is a work order given to its own crane, it is made to carry out that work.

When a work instruction is given to the own crane during the work of the crane, the CPUs 31, 32, 33 store the instruction and sequentially execute it after the work is completed. .

Next, the operation of the communication device of the stacker crane having the above configuration will be described.

First, a work instruction is given from the transmitter 10 to the end crane 1 by an instruction from a computer (not shown). Since each crane 1, 2, 3 is provided with a communication device 21, 22, 23 for sending a work instruction signal to an adjacent crane, from the end crane 1 to the adjacent crane 3, Signals for operating instructions are sequentially sent from the crane 3 to the adjacent crane 2.

Since each crane 1, 2, 3 is provided with a control unit 31, 32, 33 that searches for a work instruction for its own crane and executes the work given to its own crane, Cranes 1, 2 and 3 execute the work instructions given to their own cranes, if any.

Therefore, according to the crane communication device of the present embodiment, even when three or more cranes travel on one route, work instructions can be given to each crane 1, 2, 3 without fail. You can

Moreover, only one transmitter 10 needs to be provided at the traveling end, and the crane system can be simplified as compared with the conventional one.

Although one embodiment of the present invention has been described above, the present invention is not limited to the above embodiment, and various modifications can be appropriately made.

For example, the communication device 10 may be provided at the traveling end R2 to give a work instruction to the crane 3.

Further, although the number of cranes is three in the above embodiment, the same effect as that of the above embodiment can be obtained when two or four or more cranes are arranged on the route.

[Brief description of drawings]

FIG. 1 is a schematic plan view for explaining an embodiment of a communication device of a stacker / stacker crane according to the present invention.

FIG. 2 is a schematic plan view for explaining a communication device of a conventional stacker crane.

FIG. 3 is a schematic plan view when three stacker cranes are arranged on the route.

[Explanation of symbols]

 1,2,3 Stacker crane 10 Transmitter 21,22,23 Communication device 31,32,33 CPU

Claims (1)

[Scope of utility model registration request] 1. A plurality of cranes traveling on one route, and a transmitter for sending a work instruction signal to a crane at an end of the cranes, the cranes being adjacent to each other. A communication device for a stacker crane, characterized in that it is provided with a communication device that sends a work instruction signal to the .