JP2000255310A - Carrying device - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a carrying device equipped with an information transmitting device capable of accurately transmitting information in a non-contact state between a carrying good loading device and a carrier vehicle in the carrier vehicle carrying the carrying good loading device over the vehicle. SOLUTION: A light receiving unit 5 is mounted to a carrier vehicle 1, and a light emitting unit 6 is also mounted to a position corresponding to that of the light receiving unit 5 for a portal pallet acting as the carrying good loading device. A suspension signal from an emergency suspension switch 3 mounted to the portal pallet 2 and a contact detection bumper switch 4 can be transmitted in a noncontact state by way of the light emitting unit 6 and the light receiving unit 5.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a transport device having a transport vehicle for transporting a transport object loading device such as a portal pallet.

[0002]

2. Description of the Related Art A vehicle carrying a load carrying apparatus is used, for example, as a large-sized heavy article transporting vehicle carrying a portal pallet. In such a transport device, it is necessary to be able to transmit a signal between a transport object loading device such as a portal pallet and a transport vehicle.

[0003] That is, an emergency stop button, a contact detection bumper switch, or a working machine is installed in the transported article loading device, and when these buttons or switches are operated,
Alternatively, it is necessary to reliably transmit a signal between the transport vehicle and the transported article loading device when operating the work machine, to stop the transport vehicle, or to operate a necessary work machine.

In a conventional transport device, an electric contact is extended from a vehicle, and a signal line is connected to the electrical contact (actually disclosed as 2-31).
No. 323). The signal transmitted between the transported article loading device and the transport vehicle is generally low in voltage and current, and is susceptible to noise when a large electric contact is used, which has a problem in reliable information transmission.

[0005] In order to reliably transmit the signal between the conveyed article loading device and the conveyed vehicle, it is necessary to use a clip type or a needle-like contact, but the structure is complicated. Further, the receiving side had to be configured to be large so as to reliably receive the signal.

[0006]

SUMMARY OF THE INVENTION The present invention relates to a transporting apparatus having a transporting vehicle on which a transported article is mounted and transported, wherein information can be accurately transmitted without contact between the transported article loading apparatus and the transporting vehicle. An object of the present invention is to provide a carrier device provided with an information transmission device.

[0007]

SUMMARY OF THE INVENTION The present invention has been made in order to solve the above-mentioned problems in a transport apparatus having a transport vehicle for transporting a transport article loading device such as a portal pallet. Provided is a transport device including an information transmission device having a light transmitter installed on one side and a light receiver installed on the other opposite position. The light transmitter and the light receiver used in the present invention may be a transmission type photoelectric switch used for detecting the passage of an object.

[0008] In the transport apparatus of the present invention having the above-described configuration, information can be transmitted between the transported article loading apparatus and the transport vehicle by the light transmitter and the light receiver. Since it is performed without contact, it can be performed without being affected by external noise.

Further, since the information transmission in the transport device of the present invention is performed optically, there is no exposure to the outside such as electric terminals, and the maintenance is good and the stability is high. Therefore, signals from an emergency stop button, a contact detection bumper switch, and the like provided on the transported article loading device can be reliably transmitted to the transported vehicle.

In the transfer apparatus of the present invention, if a light transmitter capable of transmitting wide-angle light is employed as the light transmitter, the signal transmission can be reliably performed without being affected by the mounting accuracy between the transfer object loading apparatus and the transfer vehicle. It is preferable to be able to carry out.

As described above, in the transfer device of the present invention, the signal from the control signal generator such as the emergency stop button or the contact detection bumper switch is reliably transmitted between the transfer vehicle and the load device. be able to.

[0012]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS A transfer device according to an embodiment of the present invention will be described below with reference to FIGS. In the figure, 1 is a transport vehicle, 2 is a portal pallet as a transported article loading device, and the transport vehicle 1 runs under the portal pallet 2 by itself and lifts the portal pallet 2 with a lifter (not shown). Transport. Conveyed goods are loaded on the portal pallet 2 using a crane or the like.

Reference numeral 3 denotes an emergency stop switch mounted on the portal pallet 2, and reference numeral 4 denotes a contact detection bumper switch also mounted on the lower side of the portal pallet 2. The light receiving device 5 constituting one of the transmission type photoelectric switches is provided in the transport vehicle 1.
Is attached. On the other hand, at the position of the portal pallet 2 corresponding to the mounting position of the light receiver 5 when the portal pallet 2 is mounted on the transport vehicle 1, a light transmitter 6 constituting the other of the photoelectric switch is mounted.

The light transmitter is of a type that transmits a conical wide-angle light beam. Even if the position where the transport vehicle 1 places the portal pallet 2 is slightly shifted, the light transmitter 6 and the light transmitter 6 can be used. The light receiver 5 can form a photoelectric switch function.

The emergency stop switch 3, the contact detection bumper switch 4, the light transmitter 5 and the light receiver 6 are connected as shown in FIG. 3, and when any one of the emergency stop switch 3 and the contact bumper switch 4 is opened. The signal is transmitted from the light transmitter 5 to the light receiver 6 as an optical signal, and an emergency stop signal is transmitted from the light receiver 6.

As shown in FIG. 3, the photoelectric switch formed by the light transmitter 5 and the light receiver 6 is of a light-emitting type, and has an emergency stop button 3 or a contact detection bumper switch 4.
Turns off when is activated. Therefore, the traveling condition of the transport vehicle 1 is that the light receiver 6 receives the light, and the emergency stop button 3 is operated while the transport vehicle 1 is traveling, and the position of the portal pallet 2 is largely shifted. When the light is interrupted, the transport vehicle 1 stops running.

The illustrated transporting apparatus has the above-described configuration, and a non-contact information transmitting device having a photoelectric switch is incorporated between the transporting vehicle 1 and the portal pallet 2, so that the influence of external noise is exerted. And information can be transmitted between the two.

The light transmitter 6 is of a type that emits a wide-angle light beam. Even when the transport vehicle 1 is an unmanned transport vehicle, a signal is transmitted without being affected by the stopping accuracy of the transport vehicle 1. Can be transmitted.

As described above, the present invention has been specifically described based on the illustrated embodiments. However, the present invention is not limited to these embodiments, and specific structures within the scope of the present invention shown in the claims are set forth. Needless to say, various changes may be made to the configuration.

For example, in the above embodiment, the portal pallet 2
An emergency stop signal or the like is sent from the vehicle to the transport vehicle 1. Instead, or together with this, a light emitter is installed on the transport vehicle 1 and a light receiver is installed on the portal pallet 2 to be mounted on the portal pallet 2. A start / stop signal may be sent from the transport vehicle 1 to a working machine or the like.

[0021]

As described above, the present invention relates to a transporting apparatus having a transport vehicle for transporting a transported article loaded thereon, wherein the light transmitter installed on one of the transported article loading apparatus and the transported vehicle is connected to the other side. Provided is a transport device including an information transmission device having a light receiver installed at an opposing position.

In the transporting apparatus of the present invention, information can be transmitted optically and non-contactly between the transported article loading apparatus and the transporting vehicle by the light transmitter and the light receiver, and the information is affected by external noise. Absent.

In the transfer apparatus of the present invention, the light transmitter which can emit a wide-angle light is adopted, and the signal is transmitted without being affected by the placement accuracy between the transfer object loading apparatus and the transfer vehicle. Transmission can be performed reliably.

Thus, in the transport device of the present invention,
If a control signal generator such as an emergency stop button or a bumper switch for contact detection is provided on the load
The control signal from there can be reliably transmitted from the transport vehicle to the transport load device.

[Brief description of the drawings]

FIG. 1 is a perspective view of a transport device according to an embodiment of the present invention.

FIG. 2 is an end view of the transfer device shown in FIG. 1;

FIG. 3 is an explanatory diagram illustrating a configuration of the information transmission device illustrated in FIG. 1;

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 Conveyance vehicle 2 Gate type pallet 3 Emergency stop switch 4 Contact detection bumper switch 5 Light receiver 6 Light emitter

Claims (5)

[Claims] 1. A transport device having a transport vehicle for transporting a transported article loaded thereon, wherein a light transmitter is installed at one of the transported article loader and the transport vehicle, and a light receiver is installed at a position opposite to the other. A transport device comprising an information transmission device having: 2. The transport device according to claim 1, wherein the light transmitter is capable of transmitting light at a wide angle. 3. A control signal generator is attached to one of the transported article loading device and the transport vehicle, and a control signal from the control signal generator is transmitted to the light transmitter. 3. The transfer device according to claim 1, wherein: 4. The transport device according to claim 1, wherein the light transmitter is configured to be of a constant light emission type. 5. The transfer device according to claim 3, wherein the control signal generator is at least one of an emergency stop button and a bumper switch for contact detection.