JP2634044B2 - Magnetic levitation transfer device - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION [Industrial Application Field] The present invention relates to a magnetic levitation type transport device that transports articles and the like while traveling on a rail provided along a transport path while a trolley floats. About.

[Prior Art] FIGS. 3 and 4 are views showing an example of a conventional magnetic levitation type transport apparatus. In these figures, reference numeral 1 denotes a rail erected along the transport path, which is made of a hollow prismatic steel material and is horizontally supported by columns 2, 2,. Reference numeral 5 denotes a carriage that travels on the rail 1. The carriage 5 includes a levitation electromagnet 7 facing the lower surface of the rail 1,
A guide electromagnet 8 facing both sides of the rail 1 and a switch 9 are provided, and a rechargeable battery 10 is removably loaded. The levitation electromagnet 7 is
The truck is levitated by magnetically attracting the lower surface of the rail 1 and is connected to a battery 10 via a switch 9 and a current control circuit 11 as shown in FIG. The current control circuit 11 controls the excitation current supplied to the levitation electromagnets 7 from the battery 10 based on the detection signal of the gap sensor 12 for detecting the gap G ₁ between the lower surface of the levitation electromagnets 7 and the rail 1 in, the gap G ₁ is always controlling the excitation current to be constant. On the other hand, the guide electromagnet 8 regulates the displacement of the carriage 5 in the width direction by magnetically attracting both side surfaces of the rail 1, and as shown in FIG. 5, switches the switch 9 and the current control circuit 13. It is connected to the battery 10 via. The current control circuit 13 based on the detection signal of the gap sensor 14 for detecting a gap G ₂ between the two side surfaces of the guide electromagnet 8 and the rail 1 Battery
Controls the exciting current supplied to the guide electromagnet 8 to 10, the gap G ₂ is always controlling the excitation current to be constant. The gap sensors 12 and 14 are constituted by, for example, eddy current sensors. Also, rail 1
Primary coil of linear induction motor on top of
Are mounted at predetermined intervals, and the bogie 5 is provided with a secondary conductor 16 that is vertically opposed to the primary coil 15 with a gap therebetween. In addition, trolley 5
A positioning stop electromagnet 17 composed of an E-shaped core and a coil wound around the core is attached to the column 2 located at the station for positioning and stopping the electromagnet 17. An E-shaped secondary coil 18 facing the core with a gap therebetween is attached.

In such a configuration, the switch 9 is turned on,
When an exciting current is supplied from the battery 10 to the levitation electromagnet 7 and the guide electromagnet 8 via the current control circuits 11 and 13, the carriage 5 is moved above the rail 1 (in the direction of the arrow U shown in FIG. 3). Surface. On the other hand, when an alternating current is supplied to the primary coil 15 of the linear induction motor, a traveling magnetic field is generated on the primary coil 15 in the direction of arrow F shown in FIG. Each time it passes above, it is accelerated in the direction of arrow F, and in other sections it travels by inertia while slightly decelerating. As a result, the bogie 5 travels continuously while alternately repeating acceleration and coasting while floating. Next, when the carriage 5 is stopped at the station, the primary coil 15 in front of the station is excited in the opposite phase to generate a traveling magnetic field in the direction opposite to the arrow F, whereby the carriage 5 is sufficiently decelerated. Then, a DC exciting current is supplied to the electromagnet 17. Thereby, the bogie 5 stops positioning at a position where the E-shaped core of the electromagnet 17 and the secondary core 18 on the bogie 5 side are vertically opposed. Further, when the power of the battery 10 is consumed and the power sufficient to float the cart 5 is not generated, the battery 10 is replaced with another charged battery.

"Problems to be Solved by the Invention" In the above-described conventional magnetic levitation transfer device, a battery 10 is used as a power source for the levitation electromagnet 7 and the guide electromagnet 8, and the switch 9 is operated during conveyance. When the vehicle was turned on and the carriage 5 was constantly levitated, the traveling and the positioning were stopped. Because of this, the battery
10 high power consumption, short lifespan,
There was a problem that 10 had to be replaced frequently. Further, even when the carriage 5 is positioned and stopped on the station, in order to keep the carriage 5 floating, the displacement of the carriage 5 in the width direction is regulated by the guide electromagnets 8. There was also a problem that a sufficient holding force in the width direction of No. 5 could not be obtained. Thereby, for example, when the carriage 5 is stopped at the station and the loading / unloading of the luggage is automatically performed by the transfer apparatus, the carriage 5 is displaced in the width direction, and the automatic movement of the luggage by the transfer apparatus is caused. There was a case where the unloading operation was not performed smoothly.

The present invention has been made in view of the above circumstances, and minimizes the power consumption of a battery loaded on a truck,
Accordingly, it is an object of the present invention to provide a magnetic levitation transfer device that can reduce the number of times of battery replacement and can sufficiently secure a holding force in the width direction of the carriage on the station.

"Means for Solving the Problems" The present invention provides a truck running along the rail while providing a straight rail on the transport path, and a gap between the lower surface and both side surfaces of the rail. A magnetic levitation force generating means for detecting and magnetically attracting the lower surface and both side surfaces of the rail in accordance with the gap amount; and a battery for supplying power to the magnetic levitation force generation means. A magnetic levitation type transport device in which the carriage is floated from the rail by means, and the carriage is caused to travel by a thrust generating means comprising a primary side and a secondary side provided in a state facing the rail and the carriage, respectively. , A floodlight provided on an end of a traveling range of the bogie on the rail side, and projecting a light beam from the end toward a longitudinal direction of the rail; Control means for running or stopping the bogie by controlling the generating means, the control means for turning on or off the floodlight depending on whether or not the bogie has stopped at a desired stop position; and Switching means for connecting or disconnecting between the battery and the magnetic levitation generating means depending on whether or not the light emitted from the projector is received.

[Operation] Depending on whether or not light is emitted from the light emitter provided on the rail side, the connection between the battery in the bogie and the magnetic levitation force generating means is switched or cut off by the switching means. While the electric power of the battery is supplied to the magnetic levitation generating means and the bogie is levitated, during the period when the bogie is stopped, the power supply to the magnetic levitation force generating means can be stopped to be in a non-levitation state. Thus, the power consumption of the battery can be significantly reduced. In addition, when the bogie stops and is in a non-floating state, the bogie and the rail come into contact with each other, so that a sufficient holding force for restricting displacement of the bogie in the width direction can be obtained.

"Example" Hereinafter, an example of the present invention will be described with reference to the drawings.

FIG. 1 is a front view showing an external configuration of an embodiment of the present invention, and FIG. 2 is a block diagram showing an electrical configuration of the embodiment.

In FIG. 1, reference numeral 21 denotes a light emitter mounted on an end of the rail 1, and reference numeral 22 denotes a light mounted on the carriage 5, which receives light emitted from the light emitter 21 and opens and closes contacts according to the presence or absence of the light. It is a light-responsive switch. This light-responsive switch 22 is provided on the carriage 5 instead of the switch 9 shown in FIGS. 3 and 5, and is connected between the battery 10 and the current control circuits 11, 13 as shown in FIG. And floodlight 21
Only when light is received from the
10 and the current control circuits 11 and 13 are connected, and when light is no longer received from the projector 21, the contacts are opened and the battery 10
And the current control circuits 11, 13.

On the other hand, in FIG. 2, reference numerals 24, 24... Are provided at a plurality of positions on the rail 1, and each of the sensors detects the carriage 5, and is constituted by, for example, a reflection type photo sensor. twenty five
And the electromagnets for positioning so that the truck 5 accelerates, decelerates, or stops in a predetermined traveling pattern based on the detection signals supplied from the sensors 24, 24,. This is a control device that controls the excitation of 17 and at the same time controls the flickering of the projector 21. In this case, the control device 25 controls the light source while the carriage 5 is running.
After the illuminator 21 is kept turned on and the positioning electromagnet 17 is excited to stop the positioning of the carriage 5 at the station, the projector 21 is turned off.

Next, the operation of the magnetic levitation transfer device having the above-described configuration will be described.

First, the case where the cart 5 is running will be described.
In this case, the light emitter 21 is turned on and emits light, and the light emitted from the light emitter 21 reaches the light responsive switch 22,
As a result, the contact of the light responsive switch 22 is closed. As a result, when the carriage 5 is running, an exciting current is supplied from the battery 10 to the electromagnet 7 for levitation and the electromagnet 8 for guidance via the light-responsive switch 22 and the current control circuits 11 and 13, The trolley 5 has floated above the rail 1. In this state, under the control of the control circuit 25, the primary coils 15, 15,... Are sequentially excited, whereby the bogie 5 is traveling continuously while alternately repeating acceleration and coasting in a floating state. .

Next, the case where the carriage 5 is stopped on the station will be described. In this case, when the truck 5 sufficiently decelerated by the primary coil 15 in front of the station reaches the station, a DC exciting current is supplied to the electromagnet 17, whereby the E-shaped core of the electromagnet 17 , Trolley 5
The bogie 5 stops at a position where the secondary core 18 on the side faces up and down. At the same time, the light emitter 21 is turned off and no longer emits light, whereby the contact of the light responsive switch 22 is opened. As a result, when the carriage 5 is stopped at the station, the supply of the exciting current to the electromagnet 7 for floating and the electromagnet 8 for guidance is cut off, and the rollers (see FIG. 4) of the carriage 5 come into contact with the upper surface of the rail 1. Descend until you do.

As described above, in the above-described embodiment, the electric power of the battery 10 is supplied to the electromagnets 7 for guidance and the electromagnets 8 for guidance only during the period when the cart 5 is traveling, so that the cart 5 is levitated while the cart 5 is moved. During the suspension period, the power supply to the levitation electromagnet 7 and the guide electromagnet 8 is stopped so as to be in a non-floating state, so that the power consumption of the battery 10 can be significantly reduced. When the carriage 5 stops, the roller 20 of the carriage 5 and the rail 1 are in contact with each other, so that a sufficient holding force for restricting the displacement of the carriage 5 in the width direction is obtained.

[Effects of the Invention] As described above, the present invention has a construction in which a linear rail is erected on a transport path, and a bogie traveling along the rail has a gap between the lower surface and both side surfaces of the rail. Magnetic levitation force generating means for magnetically attracting the lower surface and both side surfaces of the rail in accordance with the gap amount, and a battery for supplying power to the magnetic levitation force generation means. A magnetic levitation type transport in which the bogie is floated from the rail by generating means, and the bogie is run by thrust generating means consisting of a primary side and a secondary side provided to face the rail and the bogie, respectively. In the apparatus, a light projector is provided on the rail side, at an end of a traveling range of the bogie, and emits a light beam from the end in a longitudinal direction of the rail, Control means for running or stopping the truck by controlling thrust generating means, wherein the control means turns on or off the light emitter depending on whether or not the truck has stopped at a desired stop position; and Switching means for connecting or disconnecting between the battery and the magnetic levitation generating means depending on whether or not the light emitted from the projector has been received, so that the bogie is stopped at a station or the like. During this period, the power supply to the magnetic levitation force generating means is stopped, and the bogie can be in a non-levitation state, thereby minimizing the power consumption of the battery loaded on the bogie and reducing the number of times of battery replacement. In addition, when the truck is stopped on a station or the like, it is possible to obtain a sufficient holding force in the width direction of the truck. Effect can be obtained. Also,
Since the floodlight is provided on the rail side and the switching means is operated by a light beam directed in the longitudinal direction of the rail, it is necessary to provide a plurality of stop positions for the carriage at a plurality of stop positions without providing a special device at each stop position. A command can be supplied to control the floating or landing, so that the number of projectors to be installed can be reduced, the cost can be reduced, and the labor required for maintenance can be reduced.

[Brief description of the drawings]

FIG. 1 is a front view showing an external configuration of an embodiment of the present invention,
FIG. 2 is a block diagram showing an electric configuration of the embodiment, and FIG.
FIG. 1 is a front view showing an external configuration of a conventional magnetic levitation type transport device. FIG. 4 is a cross-sectional view taken along line AA of FIG. 3. FIG. 5 is an electrical configuration of a truck of the conventional magnetic levitation type transport device. FIG. 1 ... rail, 5 ... trolley, 7 ... electromagnet for levitation, 8 ...
… Guide electromagnet, 10… Battery, 21 …… Floodlight, 22…
... Light-responsive switch (switching means).

Claims (1)

(57) [Claims] 1. A method according to claim 1, wherein a linear rail is provided on the transport path.
On a truck traveling along the rail, a magnetic levitation force is generated which detects a gap between the lower surface and both side surfaces of the rail and magnetically attracts the lower surface and both side surfaces of the rail according to the amount of the gap. Means and a battery for supplying power to the magnetic levitation generating means are provided, and the carriage is levitated from the rail by the magnetic levitation generating means, and provided in a state of facing the rail and the carriage, respectively. A magnetic levitation type transport device that causes the truck to travel by a thrust generating means including a primary side and a secondary side, wherein the rail is provided at an end of a traveling range of the truck, and a rail is provided from this end. And a control means for running or stopping the carriage by controlling the thrust generating means, Control means for turning on or off the light emitter according to whether or not the vehicle has stopped at a desired stop position; and the battery and the magnetic levitation force provided on the vehicle and depending on whether or not light emitted from the light emitter has been received. A magnetic levitation type transport device, comprising: switching means for connecting or disconnecting between the generating means.