JP2649578B2 - Transfer device driven by linear motor - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION (Industrial Application Field) The present invention relates to a vehicle of a linear motor driven vehicle in which a secondary conductor of a linear motor is provided on a transport vehicle and a linear motor main body is provided on a traveling route side. The present invention relates to a method for driving an upper electric device.

(Conventional technology and its problems) In the above-described linear motor driven vehicle, an electric device which requires a power supply such as a work transfer means such as a conveyor or a running fork or a work clamp which is mainly operated while the vehicle is stopped is provided. When mounted, conventionally, as described in, for example, JP-A-55-150704, a power supply rail is laid on the traveling route side, and a current collecting means is provided on the transfer vehicle, and the transfer vehicle is provided from the ground side. It was configured to supply power to electrical devices on the vehicle.

In such a conventional configuration, although a transport vehicle driven and driven by a primary linear motor on the ground is used, a power supply system for the transport vehicle from the ground side is required, so equipment costs are high. However, the merits of driving the primary linear motor on the ground cannot be fully utilized.

In order to solve such problems, for example, Japanese Patent Laid-Open
No. 8266 and Japanese Utility Model Application No. 62-28515 (Japanese Utility Model Application Laid-open No. 63-138805).
No.), the induction coil corresponding to the linear motor body on the ground side is attached to the transport vehicle, and the electric device mounted on the transport vehicle is driven by the electric power induced by the induction coil. However, it is considered that the excitation is applied to the ground-side linear motor body to apply a propulsive force to the transporting vehicle and, at the same time, to induce an electromotive force in the induction coil, so that the vehicle is driven while the vehicle is running. However, the configuration is such that the electromotive force can be induced only in the induction coil in a state where the transport vehicle is stopped.

Therefore, in order to supply power to a driving motor such as a conveyor mounted on the transport vehicle in a state where the transport vehicle is stopped at a predetermined position, the battery is charged with electric power induced by the induction coil during traveling, When the vehicle is stopped, the electric device must be driven by the electric power from the battery, so that the equipment cost is high and the electric devices that can be used are also restricted.

(Means for Solving the Problems) It is an object of the present invention to provide a method for driving an on-vehicle electric device of a linear motor driven vehicle which can solve the above-mentioned conventional problems. If the means for achieving is indicated by the reference numerals of the embodiments described later, the transportation vehicle 1
A linear motor main body 8 is disposed at appropriate intervals in the traveling direction of the transporting vehicle 1 on the traveling route side of the vehicle, and the transporting vehicle 1 includes a secondary conductor 4 of a linear motor and an induction coil 9.
Are arranged at different positions in the running direction so as to face different linear motor bodies 8, respectively, and are provided with an electric device (motor 3) provided in the transporting vehicle 1 by an electromotive force induced by the induction coil 9. ), When the transport vehicle 1 stops at a predetermined position, only the linear motor body 8A facing the induction coil 9 is energized to be excited by the induction coil 9. The on-vehicle electric device (motor 3) is powered by the generated electromotive force.

(Embodiment) An embodiment of the present invention will be described below with reference to the accompanying drawings.

1 and 2, reference numeral 1 denotes a pallet-shaped transfer vehicle, which is a transfer roller conveyor 2 for transferring and transferring an object W in a lateral direction and a motor 3 for driving the transfer roller conveyor.
In addition, a secondary conductor 4 of a linear motor is provided at the center of the bottom surface over the entire length in the traveling direction. Reference numeral 5 denotes a traveling route of the transport vehicle 1, which includes two horizontal rows of supporting horizontal shaft rollers 6 for supporting the bottom surface of the transport vehicle 1, and a positioning vertical axis adjacent to the left and right sides of the transport vehicle 1. A roller 7 and a linear motor main body 8 facing the secondary conductor 4 of the linear motor at a predetermined interval are arranged at appropriate intervals in the direction of the traveling path.

When the transport vehicle 1 is stopped at a predetermined unloading position, the linear motor body 8 located immediately after (or immediately before) the transport vehicle 1 may be provided.
Is mounted with an induction coil 9 facing at a predetermined interval.

As shown in FIG. 3 and FIG.
Is a Y-connected three-phase induction coil 10 as is well known in the art.
r, 10s and 10t are fitted to the comb-shaped core 11 using slits 11a so that the coils partially overlap each other. The induction coil 9 also has the same structure as the linear motor body 8. Then, the Y-connected three-phase induction coils 12r, 12s,
12t is fitted and attached to the comb-shaped core 13 using the slit 13a so that the coils partially overlap each other. The induction coil 9 is connected to the driving motor 3 of the roller conveyor 2 for transferring the transferred object via the controller 14.

In the transport device configured as described above, by energizing and energizing the linear motor body 8 on the ground side, the linear motor body 8 and the secondary conductor 4 on the side of the transporting vehicle 1 facing the linear motor body 8 are conventionally known. A thrust in a predetermined direction acts on the transport vehicle 1 due to the magnetic action during the period, and the transport vehicle 1 travels in a predetermined direction at a predetermined speed.

It is well known that the transport vehicle 1 can be stopped at a predetermined unloading position by controlling the linear motor body 8, as shown in FIG. When the transport vehicle 1 stops at the wholesale position,
By energizing and energizing only a specific linear motor main body 8A facing the induction coil 9 on the transport vehicle 1 side,
Electromotive force is generated in the induction coil 9 on the secondary side by the electromagnetic induction between the linear motor main body 8A and the induction coil 9. Therefore, the induction coil 9 is used as a three-phase AC power supply,
The required electric power can be supplied to the motor 3 via the controller 14. In other words, the conveyed object transfer roller conveyor 2 is arbitrarily driven via the controller 14, and the conveyed object W is conveyed to the conveyed vehicle 1 by the roller conveyor 2 and the ground-side conveyor connected thereto. Can perform wholesale work.

Since the linear motor body 8A and the induction coil 9 correspond to the primary coil and the secondary coil of the transformer, the voltage generated in the induction coil 9 is the imprint voltage on the linear motor body 8A, the number of turns of the coil, and It is determined by the number of turns of the induction coil 9. Therefore, even if the conditions on the side of the linear motor main body 8A are determined, a necessary voltage can be extracted by adjusting the number of turns of the induction coil 9. Moreover, since the linear motor bodies 8, 8A are originally intended to propel the transport vehicle 1, they have a large output, and therefore, the roller conveyor 2 for transferring the transported object as shown in the embodiment is used. It is easy to obtain enough power to drive. The linear motor body 8A
May be exactly the same as the other linear motor body 8, but in some cases, the number of turns and the applied voltage may be changed from the other linear motor body 8 to generate the necessary electromotive force on the induction coil 9 side. It is also possible to configure so that

In the above embodiment, when the transport vehicle 1 is stopped at a predetermined position, the electric device (the transported object transfer roller conveyor 2) on the transport vehicle 1 is driven by the electromotive force induced in the induction coil 9. However, even when the transporting vehicle 1 is running, when the induction coil 9 faces the linear motor main body 8, an electromotive force is generated in the induction coil 9 by an electromagnetic induction action between the two, so that Depending on the electric device driven by the electromotive force, the electric device can be driven as necessary by the electromotive force induced in the induction coil 9 while the transportation vehicle 1 is traveling. In this case, as shown by a broken line in FIG. 3, the three-phase AC voltage induced in the induction coil 9 is converted into DC by the rectification / charging circuit 15 to charge the battery 16, and the battery 16 is stably charged. Can be configured to drive the electric device via the controller 17 by the DC voltage supplied to the power supply.

The electric device on the side of the transporting vehicle 1 may be any device such as a work clamp or an information management device such as a microcomputer, in addition to a transfer device such as the roller conveyor 2 for transferring a transferred object.

(Effects and Effects of the Invention) As described above, according to the on-vehicle electric device driving method of the linear motor driven vehicle of the present invention, when the transport vehicle stops at a predetermined position, only the linear motor main body that the induction coil faces is provided. Is energized to excite the transport vehicle without applying the thrust of the linear motor to the transport vehicle, so that power is supplied to the onboard electric device by the electromotive force induced in the induction coil. It is no longer necessary to provide a contact-type power supply system consisting of a power supply rail and current collecting means to supply electric equipment on the vehicle when the vehicle is in use, and only controls the specific linear motor body at the stop position of the transport vehicle. By using a part of the linear motor for vehicle propulsion (the main body of the linear motor on the ground side), the electric equipment of the stopped vehicle can be reliably fed and driven. And the cost can be greatly reduced.

[Brief description of the drawings]

FIG. 1 is a schematic side view of the transporting vehicle with travel guide means omitted, FIG. 2 is a schematic front view, FIG. 3 is a cross-sectional plan connection diagram illustrating a linear motor main body and an induction coil, and FIG. It is a vertical side view. DESCRIPTION OF SYMBOLS 1 ... Conveying vehicle, 2 ... Conveyed object transfer roller conveyor, 3 ... Motor, 4 ... Secondary conductor of linear motor, 5 ... Traveling path, 6 ... Supporting horizontal axis roller, 7
…… Vertical axis roller for positioning, 8,8A …… Linear motor body, 9 …… Induction coil, 10r, 10s, 10t, 12r, 12s, 12t
…… 3 phase induction coil, 11,13 …… Comb core, 14,17…
… Controller, 15… Rectifier / charging circuit, 16 …… Battery.

Claims (1)

(57) [Claims] 1. A linear motor body is disposed on a traveling route side of a transport vehicle at an appropriate interval in a traveling direction of the transport vehicle. The transport vehicle includes a secondary conductor of a linear motor, an induction coil, Are arranged in different positions in the traveling direction so as to face different linear motor bodies, respectively, and drive an electric device provided in the transporting vehicle with an electromotive force induced by the induction coil. In a motor-driven vehicle, when the transfer vehicle stops at a predetermined position, only the linear motor body facing the induction coil is energized and excited,
A method for driving an on-vehicle electric device of a linear motor driven vehicle, wherein power is supplied to an on-vehicle electric device by an electromotive force induced in the induction coil.