JPH08217208A - Crane for carrying-in/out work - Google Patents

Abstract

PURPOSE: To eliminate signal lines and power lines between a lifting device and an on machine control panel by installing one optical transmission device on the lifting device side of a carne for carrying-in and out and one optical transmission device on the body side respectively, mounting a battery onto the lifting device, and a charging device for the battery on the body side. CONSTITUTION: This crane for carrying-in/out work, which conducts running and lifting between a carrying in/out station and a carrying in/out rack, and receives and delivers a load 6 with a fork device 5, is provided with an optical transmission device 8a mounted on the side of a liftable load base 4 and an optical transmission device 8b mounted on the crane body side. A battery 9 for supplying power to the fork device 5 and various detecting means is mounted onto the load base 4, and a charging device 10 is mounted on the body side. By transmitting control signals from an on machine control panel 7 and signals to the on-machine control panel 7 side from the load base 4 through the optical transmission devices 8a, 8b, it is possible to eliminate conventional cable bearing wiring.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a loading / unloading crane for use in an automated warehouse, that is, a crane equipped with an elevating device having a loading / unloading station or a means for transferring a load to / from a shelf.

[0002]

2. Description of the Related Art In the conventional loading / unloading crane, when the loading platform moves up and down along the guide rails of the loading platform,
Generally, a wiring cable for receiving control signals and electric power from the onboard control panel side is moved up and down together with the loading platform. In this method, since the connecting cable is repeatedly bent every time the loading platform is moved up and down, the service life of the cable is inevitably limited, and the cause of failure and the need for maintenance replacement occur.

[0003]

In the case of this conventional crane for loading and unloading work, both the supply of electric power to the loading platform that moves up and down and the transmission of signals to and from the onboard control panel are performed by the connected cables. The cable is supplied and transmitted, and the cable is repeatedly bent in the cable carrier. Therefore, in this method, in addition to the problem of the service life of the cable, a cable bear or the like is required, which is an obstacle to speeding up and noise reduction.

An object of the present invention is to eliminate a cable for supplying electric power to a loading platform that moves up and down, a cable for signal transmission, and a cable bear for accommodating these cables and moving them up and down.

[0005]

According to the construction method of the present invention, the cable connected to the ascending and descending loading platform is unnecessary for both signal and power lines.

That is, the means for receiving and delivering the baggage delivery control signal using the fork and the fork and the fork, and the means for transmitting the detection signals from the various detector means to the onboard control panel side are:
On the loading platform that moves up and down and on the fixed side that does not move up and down,
By providing the optical transmission device, it is possible to carry out information transmission when necessary.

Further, a battery is mounted on the loading platform for power supply to the fork motor power source of the fork device and various detector means mounted on the loading platform which moves up and down, and power supply to the optical transmission device and the controller for the loading platform. In addition, by providing the receiving side of the charging device capable of charging the battery when necessary to the loading platform side and the supplying side to the fixed side, the power supply by the cable is unnecessary.

When a plurality of loading / unloading stations having different elevation heights are prepared, the cycle time can be lengthened by preparing a plurality of charging device supply sides corresponding to the station positions. In addition, the charging time can be all except when the luggage is being transferred to and from the shelf and the bed is being moved to the shelf.

[0009]

[Function] In the automatic warehouse equipment, since the loading / unloading crane is a device for transferring luggage between the loading / unloading station and the shelf, the function of moving between the target loading / unloading station and the shelf, that is, A function to move the loading / unloading crane to the rack address direction, and an elevating function to move the loading / unloading crane to the height of the loading / unloading station and the shelf for the purpose of loading, and the loading / unloading station and the shelf. From the crane to the loading and unloading crane, and conversely to unload the luggage from the crane to the loading and unloading station and the shelves, and whether the cargo loaded on the crane bed is normal Various detecting means such as a detecting means for checking and a fork position detecting means of the fork device are required. Among these, the function to move the entire loading / unloading crane in the rack address direction and the loading platform in the loading / unloading station and shelf steps,
The function of moving up and down is provided on the main body of the crane for loading and unloading work, but the fork device for loading and unloading luggage from the loading platform and various detector means do not move up and down. It is necessary to prepare for the repeated loading platform side. Conventionally, the cargo bed side and the crane body side were connected by a dedicated cable to achieve signal transmission and power supply, but with this method, the cable is inevitably stored in a cable bear and repeatedly bent. If it is possible to perform work such as cable replacement due to the life of the crane, a construction method of a crane for loading and unloading work that does not use cables is required. On the contrary,
In the case of the configuration method according to the present invention, by installing an optical transmission device on each of the bed side that moves up and down and the body side that does not move up and down, the on / off control signals of the fork motor output from the onboard control panel are loaded. It becomes possible to take in the sensor output signals of various detector means mounted on the loading platform from the loading platform side to the onboard control panel side while being transmitted to the loading platform side.

Further, for the power supply for the fork motor of the fork device and the power supply to various detector means mounted on the platform that moves up and down, and for the power supply to the above-mentioned optical transmission device and the controller provided for the platform. In addition, it is not necessary to provide a power supply by cable connection in order to equip the luggage carrier with a dedicated battery and to equip the luggage carrier side and the main body side with a charging device capable of charging the battery when necessary. There is.

[0011]

An embodiment of the present invention will be described below with reference to FIG. In FIG. 1, 1 is a loading / unloading work crane, 2 is a traveling rail for moving the loading / unloading work crane 1 in the direction of the address of the shelf, and 3 is an elevating device of the loading / unloading work crane in the shelf direction. A post that also uses an elevating guide required for raising and lowering, 4 is a loading platform for loading and hoisting a load, and 5 is a fork device for carrying the load between a loading / unloading station and a shelf, 6 is a load loaded by the fork device 5, 7 is an on-board control panel mounted on the loading / unloading crane 1, 8a is an optical transmission device attached to the loading platform 4 side, and 8b is the main body of the loading / unloading crane. An optical transmission device mounted on the side, a battery 9 for supplying power to the fork device 5 mounted on the bed and various detector means, and a charging device 10 for charging the battery 9. With this configuration, control signals from the onboard control panel 7 and signals from the loading platform 4 to the onboard control panel 7 side can be transmitted by the optical transmission devices 8a and 8b, and the fork motor and various detections can be performed. Since the battery 9 is provided for the power supply required by the device means and the like, the cable bear wiring, which is conventionally connected between the onboard control panel 7 and each device mounted on the loading platform, is unnecessary. It becomes possible.

Since the battery 9 has a charging function, it does not need to be replaced due to a voltage drop, and can always be charged by the charging device 10 when it can be charged.

Next, the difference between the method of constructing the crane for loading and unloading work according to the present invention and the conventional method will be described with reference to FIGS. FIG. 2 shows an example of a conventional configuration, which is an onboard control panel 7
And various detector means 1 mounted on the bed
Signal transmission and power supply between the 1 and the fork motor 12 are performed by a dedicated cable wired in the cable bear. On the other hand, FIG. 3 shows a construction method in the present invention. The on / off control of the fork motor 12 and the switching of the rotation direction are performed by transmitting a control signal from the control controller 15 of the on-board control panel 7 by means of an optical transmission device using the optical transmission devices 8b and 8a.
The fork motor 1 is transmitted to the upper controller 13 by the instruction command fetched by the controller 13.
This is possible by switching the switching circuit 14 of No. 2.

Various status signals detected by various detector means are converted into transmission data by the controller 13 and then taken into the onboard control panel 7 by the optical transmission means using 8a and 8b. It is used for checking the lifting position of the loading platform 4 and for checking the loading form abnormality of the load loaded on the fork by the fork device 5.

The power required by each device mounted on the luggage carrier 4 can be supplied by the battery 9.
Moreover, the battery 9 can be charged by using the charging device 10.

Next, an example of the operation of the loading / unloading crane 1 in the construction method of the present invention will be described. When an industrial instruction such as warehousing or warehousing is issued from the host controller to the loading / unloading work crane 1, the traveling controller and the lifting device are instructed by the crane controller 15 installed in the onboard control panel 7. The crane is unloaded and is moved to the loading / unloading station for work, or to the target shelf in the rack, and the loading platform 4 for transferring luggage is moved up and down to the stop position for loading and unloading, and is put in standby. . The controller 1 on the bed 4 side from the controller 15 of the crane via the optical transmission devices 8b and 8a at the timing when the bed arrives at the target position.
3, a control signal is transmitted to the load control device 3, and finally, the motor control of the fork device for loading or unloading the load is performed, and the load is loaded on the loading platform 4 or the loading / unloading station is loaded from the loading platform 4. Alternatively, it is possible to load the luggage on the shelf. Further, the battery 9 mounted on the loading platform 4 is an optical transmission device 8a always mounted on the loading platform 4, a loading platform side controller 13, various detector means 11,
Power is supplied to the fork motor and to the switching circuit 14. This battery 9 can be charged by the charging device 10 provided on the main body side of the loading / unloading crane 1. The charging device 10 is attached to the loading / unloading station in accordance with the height at which the cargo bed 4 can deliver and receive the luggage, so that the luggage can be delivered to and from the loading / unloading station and the traveling of the crane. In the state, the battery 9 can be continuously charged, and the charging is interrupted only when the luggage carrier 4 transfers the luggage to and from the shelf. In the standby state where there is no work instruction to the crane, the loading platform 4 is stopped at the height of the loading / unloading station so that the charging device 10
Since it can be charged by the battery 9,
Since charging can be performed during a time period that is half or more of the operating time of the loading / unloading crane 1, it is not necessary to particularly lengthen the cycle time of the loading / unloading crane 1.

[0017]

According to the present invention, one optical transmission device is provided on the lifting device side of the loading / unloading crane and one optical transmission device is provided on the main body side, and a battery for supplying power required for the lifting device is provided. In addition to the provision of a battery charging device on the main body side, it is possible to eliminate the signal line and power line between the lifting device and the onboard control panel on the main body side. Is also effective in reducing the noise during the ascending / descending operation.

According to the construction method of the present invention, by eliminating the cable, it is not necessary to take measures against the problem of interference between the cable and the luggage stored in the shelf. Since the assembling work can be simplified, the assembling adjustment period of the stacker crane can be shortened.

[Brief description of drawings]

FIG. 1 is an explanatory view of a method of constructing a crane for loading and unloading work.

FIG. 2 is an explanatory diagram of a conventional control configuration of a loading / unloading crane.

FIG. 3 is an explanatory diagram of a control configuration of the present invention for a loading / unloading crane.

[Explanation of symbols]

7 ... On-board control panel, 8a, 8b ... Optical transmission device, 9 ... Battery, 10 ... Charging device, 11 ... Detector, 12 ... Fork motor, 13 ... Controller, 14 ... Switching circuit.

Claims (1)

[Claims] 1. A loading / unloading work crane that travels and moves up and down between a loading / unloading station and a loading / unloading shelf, and transfers a load by a fork mechanism, to a motor of a fork device mounted on a lifting device. It is equipped with photoelectric transmission device means for inputting and outputting control signals and sensor capture signals from various detector means with the on-board control panel side of the loading and unloading work crane, and is necessary for fork motor drive and various detectors. By providing a battery for supplying power and a charging device for the battery, fork operation and lifting / lowering operation of the lifting device can be performed without using the signal line and power line between the lifting device and the onboard control panel. A crane for loading and unloading work characterized by being controllable.