JPS6067326A - Propulsion device of article transport device - Google Patents

Abstract

PURPOSE:To improve the efficiency of a thrust for a carrier by using magnetic field generated by a solenoid coil disposed on the periphery of a track of a document transport device and electromagnetic force of a permanent magnet mounted on a carrier as a thrust for the carrier, and exciting the solenoid coil to apply a thrust to the carrier. CONSTITUTION:A track-side propulsion device 1 comprises a solenoid coil 2, a tubular frame 3, a carrier guide 4, a sensor 5 and a support device 6 for supporting a carrier guide and a track. When a carrier 7 is moved by force, the polarity of the excited solenoid coils 2-1, 2-2 to the polarity of a permanent magnet 8 is controlled to be a thrust for the carrier 7. When the carrier 7 is moved by inertial, the solenoid coil 2 is released by a switching circuit so that an induced current is not generated by the permanent magnet 8. In case of braking the carrier 7, the solenoid coil 2 is short-circuited by the switching circuit to apply solenoid brake to the permanent magnet 8.

Description

DETAILED DESCRIPTION OF THE INVENTION [Technical Field to which the Invention Pertains] The present invention relates to 11) a propulsion device for an article conveyance system used as a propulsion means for a conveyance vehicle of a similar conveyance system.

[Prior art and its problems] Conventionally, belt conveyors, air, and single-sided linear induction motors are most often used as means for conveying items such as lower 1'' in article conveyance systems.For example, belt conveyors In the pneumatic method, ■The speed is slow. ■The entire body is sent at the same speed. In the pneumatic method, ■The noise is large.

■Compared to the capacity of an air pump, it is conveyed in one system■°
The amount of species is small.

Furthermore, in the single-sided linear induction motor system,
■A floating blade occurs. ■-Since the next volume is necessary and cheap, the entire trajectory becomes dog-like. ■-Efficiency decreases because power is obtained by the moving magnetic field generated by the next winding bond.

There were other drawbacks.

In particular, the document transport system must be able to transport Category A1 documents quietly and inexpensively to each destination within the building in a short period of time.

For this reason, it has been desired that the conveyance means be high speed, energy saving, space saving, and low noise.

[Object of the invention] This invention improves the drawbacks of the conventional device described above.
The aim is to provide a high-speed, energy-saving, space-saving, and low-noise propulsion device.

[Summary of the Invention] This invention is based on a magnetic field generated when a magnetic flux at the center of a coil around a track of an article conveyance system causes current to flow through a plurality of electromagnetic coils near a conveyance vehicle of the conveyance system, and The electromagnetic force acting between a magnetic field generating device, such as a permanent magnet, attached to a conveyance vehicle is used as the propulsion force for the conveyance vehicle, and an electromagnetic force located at a position where the propulsive force is applied to the conveyance vehicle This is a propulsion device for an article conveyance system that is achieved by exciting only the coil.

[Effects of the Invention] According to the present invention, the magnetic poles generated in the excited electromagnetic coil and the magnetic poles of the magnetic field generator of the carrier vehicle are aligned in a line in the traveling direction of the carrier vehicle and face each other. Compared to a linear induction motor where the magnetic pole created by the secondary winding and the magnetic pole generated in the secondary conductor face each other perpendicularly to the traveling direction of the transport vehicle, the transport vehicle can be moved more efficiently. Propulsion can be obtained.

In fact, thrust can be obtained by energizing only the electromagnetic coils near the magnetic field generator of the transport vehicle, so power can be saved by not feeding power to other electromagnetic coils.

Further, according to the present invention, since the orbit is surrounded by electromagnetic coils, the volume of the entire orbit can be reduced.

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

In FIG. 1, a track-side propulsion device of a document transport system according to one embodiment of the present invention is indicated generally at 1.

The track side propulsion device II'i, the electromagnetic coil 2, the tube-shaped frame 3, the carrier guide 4, the sensor 5. It is constructed with a transport vehicle guide support/track support device 6 as the main component.

In addition, when the conveyance vehicle 7 moves along the trajectory of the conveyance system by receiving thrust from the electromagnetic coil 2, the polarity of the electromagnetic coil and the polarity of the permanent magnet 8 attached to the conveyance vehicle 7 as a magnetic field generator are also determined. The polarity is shown in Figure 2.

In this embodiment, the excitation current of the electromagnetic coil 2 is
The control method shown in FIG. 3 is determined by inputting the position and speed signals of the transport vehicle 7 detected by the controller.

In this embodiment, (1) When the transport vehicle 7 moves, the polarity of the excited electromagnetic coils 2-1 and 2-2 is as shown in FIG. The repulsion and attraction between the electromagnetic poles are controlled so that they become the driving force for the transport vehicle 7.

(2) When the transport vehicle 7 coasts, the electromagnetic coil 2 is opened by the switching circuit 9 and controlled so that no induced current is generated by the permanent magnet 8.

(2) When braking the transport vehicle 7, the electromagnetic coil 2 is short-circuited by the switching circuit 9, and the permanent magnet 8 is controlled to apply an electromagnetic brake.

■When applying sudden braking to the guided vehicle 7, the polarity of the excited electromagnetic coil 2 is different from the polarity of the permanent magnet 8 of the guided vehicle 7. controlled so that

Note that the present invention is not limited to the above-mentioned embodiments, and can be implemented with various modifications without changing the gist. ,
It may be other than the above embodiments.

In addition, in the above embodiment, the dual guide mechanism of the transport vehicle is comprised of rails and wheels, but it may be any other means that has the function of supporting and guiding the transport vehicle.

Furthermore, the above embodiments do not limit the number of transport vehicles that travel on the track of the document transport system.

In addition, - in the above embodiment, the electromagnetic coil 2 and the carrier guide 4 are connected by the chive-shaped frame 3 and the track support device 6
However, other means may be used as long as the purpose is to support and fix the electromagnetic coil 2 and the carrier guide 4.

In addition, in the above embodiment, the magnetic coil orbit size is 1.
The present invention does not prescribe the length or position of the track of the article conveyance system, and the electromagnetic coil can be installed in one or more sections along the entire length of the track of the article conveyance system.

Furthermore, the electromagnetic coils can also be arranged one above the other, as shown in FIG. 4, especially to obtain thrust or reverse thrust.

In addition, although the shape of the electromagnetic coil is ring-shaped in the embodiments mentioned above, it may have any shape, such as a rectangle, within the scope of the claims.

In the above embodiment, a sensor is used to detect the position and speed of the transport vehicle, but any detection means may be used as long as the purpose is not changed.

[Brief explanation of the drawing]

FIG. 1 is a schematic partially cutaway perspective view showing an embodiment of the track-side propulsion device according to the present invention, and FIG. 2 is a schematic partially cutaway perspective view showing an embodiment of the propulsion device according to the present invention. A schematic cross-sectional view taken along a vertical plane passing through the center of the frame 3,
Fig. 3 is a block diagram showing one embodiment of the method for controlling the propulsion device according to the present invention, and Fig. 4 shows another embodiment of the method for picking up the electromagnetic coil 2. This is a schematic cross-sectional view taken along a vertical plane passing through the center of Car guide, 5. Sensor, 6. Transport vehicle guide support and track support device, 7. Transport vehicle, 8. Permanent magnet. 9...Switching circuit, 10...Transported vehicle guided mechanism, II/wheels, 12...Position and speed detection, 1
3... Driving pattern, 14... Calculator, 15...
・Excited coil command and electromagnetic coil polarity command, 16・
... Excitation current value command, 17... Power amplifier, j8.
... Power supply agent Patent attorney Noriyuki Chika (and 1 other person) Figure 1 Figure 2 Figure 3 Figure 4 +: <+

Claims (1)

[Claims] A track consisting of one or more guides and a support mechanism for this guide, and this track? In a propulsion device for an article conveyance system, which includes a conveyance vehicle having a guided mechanism capable of traveling at a speed as a component of the system,
an electromagnetic coil (7) installed around the track so that the magnetic flux at the center of the coil is parallel to the traveling direction of the carrier;
1. A propulsion device for an article transport system, characterized in that the transport vehicle is driven by electromagnetic force generated between the transport vehicle and a magnetic field generator 6 attached to the transport vehicle.