JPH0117895B2 - - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention relates to a belt conveyor type magnetic adsorption traveling body device, and in particular, a traveling body equipped with a magnet (field) coupled to a flexible member is connected to a magnetic material belt that is continuously driven. This invention relates to an improved traveling body device that magnetically attracts and moves following a magnetic belt (hereinafter referred to as a magnetic belt).

The applicant is Japanese Patent Application No. 51-47880 (Special Publication No. 55-20901)
A pedestal equipped with a field is moved along a multi-stage belt conveyor line equipped with a magnetic belt using magnetic attraction force to follow the circumferential movement of the magnetic belt to create a desired speed pattern on the belt conveyor line in any section. proposed an integrator for a continuous wheel feeder in which the pedestal was moved continuously.
51-100647 (Special Publication No. 57-15021) and others have proposed a continuous transportation device suitable for an urban transportation system using a similar principle. These are all examples of a traveling body device that moves a traveling body along a belt conveyor by utilizing the magnetic attraction between the field of the traveling body and the magnetic belt of a continuously driven belt conveyor. The magnetic coupling between the field and the magnetic belt has a large influence on the driving characteristics of the traveling body.

This invention ensures the above-mentioned magnetic coupling at any point along the line, and also ensures strong magnetic coupling even when the running body turns at the end of the belt conveyor, thereby preventing shocks to the running body field throughout the entire line. It is an object of the present invention to provide a belt conveyor type magnetic adsorption traveling body device which can be driven smoothly with little friction.

That is, the belt conveyor type magnetic adsorption traveling body device of the present invention has a concave curved surface equivalent to the outer circumferential curved surface of the later-described driving wheels and idler wheels arranged side by side with their axes facing the belt width direction, and the concave curved surface is the outer circumferential surface of the two wheels. A magnetic belt conveyor consisting of a magnetic belt formed by connecting multiple bars made of magnetic material that are magnetically attracted by surface contact with each other using universal joints to form an endless belt, and running the magnetic belt between a pair of drive wheels and idle wheels. unit, and a field device in which the field magnets are connected to each other in a row by a flexible member with a binder and arranged in parallel at a pitch corresponding to the arrangement pitch of the magnetic material bars. a field device (hereinafter referred to as the field device) consisting of a running body and attached to the magnetic belt and the flexible member;
By applying a magnetic attraction force between the conveyor belt and the conveyor belt, the traveling body is moved to follow the circumferential movement of the magnetic belt along a conveyor line formed by connecting the magnetic belt conveyor units in the longitudinal direction. It is possible to easily increase the magnetic coupling between the field device, the magnetic belt, and at least the outer peripheral surface of the drive wheel anywhere on the conveyor line, and to reduce the slippage between the magnetic belt and both wheels. Since the problem can be eliminated, the following movement and the power transfer between the magnetic belt and the outer circumferential surface of the drive wheel are ensured.

This invention will be described in detail with reference to the drawings of the embodiments.
In the figure, a magnetic belt conveyor unit 1 arranged along a desired running line has a belt made of magnetic material, that is, a magnetic belt 3, stretched between a pair of driving wheels 2a and idler wheels 2b arranged in parallel with an interval. One drive wheel 2a is driven by a prime mover, and the other drive wheel 2b is an idle wheel.
a. The magnetic belt 3 is made to revolve around the idler ring 2b. The conveyor units 1 are installed in series along the running line, but the connection between the units is limited to Japanese Patent Application No. 51-47880.
20901), in which the drive wheels have a compound wheel structure, and each unit is coaxially connected, or, as disclosed in Japanese Patent Application No. 51-69276 (Japanese Patent Publication No. 55-20906), each unit is lined up at intervals. For example, a method where a belt is hung between end wheels to form a series of lines.
Either is fine.

As shown in FIG. 2, the magnetic belt conveyor unit according to the present invention has a magnetic belt 3 in which bars 4 made of magnetic material extending in the width direction are connected in parallel in the belt length direction at predetermined intervals. It has an endless track configuration in which each bar made of magnetic material is connected by a universal joint 5. By making the bottom surface of each magnetic bar 4 of the magnetic belt 3 in contact with the outer peripheral surfaces of the drive wheel 2a and idler wheel 2b into a concave surface 4' having the same curvature as the outer peripheral curved surface of the two wheels, as shown exaggeratedly in FIG. , each magnetic material bar of the magnetic belt makes surface contact with the outer circumferential surface of the drive wheel rather than line contact, and magnetically attracts it, minimizing slippage between the drive wheel and the magnetic belt, resulting in even better transmission of rotational force from the drive wheel. become. In this case, each bar 4 made of magnetic material is connected by a universal joint, so that it can bend freely as a belt when going around the drive wheel.
As shown in Fig. 1, it revolves between both drive wheels. Incidentally, since the magnetic belt has a chain shape, the drive wheel may be formed into a sprocket shape by attaching teeth that engage between the magnetic bars to the drive wheel. As shown in FIGS. 1 and 2, the above-mentioned circulating magnetic belt 3 is provided with rows corresponding to each bar 4 made of magnetic material, one row at a time, or every predetermined number of bars, in order to strengthen the magnetic coupling. It is desirable to have the field 6 formed along the structure, and the magnetic attraction between the two causes the field to follow the circumference of the magnetic belt. That is, the field 6 consists of a plurality of extending rows of field magnets 7 connected in the same direction to the bar 4 made of magnetic material by a flexible member, and each row of field magnets 7 is connected to a flexible coupling member 8. The unit is integrated into a pedestal or a vehicle (not shown) on which cargo and passengers ride, and the vehicle is supported by its wheels on a travel guideway attached to the unit and moves by attracting the magnetic field to the magnetic belt. It is something. In FIG. 2, a state in which the field 6 is tightened from unit 1' to the next belt 1 is shown, and both units 1', -20901), units 1' are arranged to rotate independently of each other.
The driving wheel 2a' of the unit 1 and the idler wheel 2b of the unit 1 are connected to form a series of conveyor lines, and the field 6 is driven from the unit 1', which is driven in the direction of arrow A in the figure, at the same speed or at different speeds. The robot then transfers to unit 1, which is being moved, and continues to move in the direction of arrow B in the figure. Each column field magnet 7 of the field magnet 6 is placed on each bar made of magnetic material of the magnetic belt, and each column field magnet 7 is composed of a plurality of multi-pole divided field magnets 9 divided in the width direction as shown in the figure. The magnetic field is assumed to equalize the magnetic attraction force acting between each row of magnetic material bars 4 and each row of field magnets 7 occupying the corresponding positions in the field width direction.

Drive wheel 2a and third wheel shown on the right side of FIG.
The drive wheel 2a shown in the figure is located at the end of the conveyor line, and at such a line end, the field 6 follows the magnetic belt 3 that rotates along the outer periphery of the drive wheel and rotates in the same way. However, in the illustrated example, the line runs backwards along the lower magnetic belt.

In this case, the outer peripheral surface of the driving wheel at the end of the line is made of a magnetic material or a magnet 10, and the magnetic flux from the field interlinks with the magnet 10 as well as the magnetic belt, so that there is no magnetic material between the driving wheel and the magnetic belt. Allow the suction force to work. It is preferable to do the same with the idler. For example, when the magnetic belt rotates from top to bottom or from bottom to top at the end of the line as shown in the figure, when the field is located at the bottom, the magnetic material is A force that tends to cause the bar to separate from the outer circumferential surface of the driving wheel and idler wheel acts, but this is compensated for by the electromagnetic outer circumferential surface of the driving wheel or the magnetic adsorption force between the magnet and the bar 4 made of magnetic material and the outer circumferential surface of the driving wheel. The sliding between the magnetic belt driving wheels is minimized so that the driving force due to the surface friction force is maintained between the contact with the surface. This electromagnetic or magnetic layer 10
Providing the magnetic belt on the outer layer of the drive wheel is effective even when the magnetic belt revolves in a horizontal plane, for example, as in the previously proposed Japanese Patent Application No. 51-100647 (Japanese Patent Publication No. 57-15021). A centripetal force that cancels the centrifugal force acting on the field when the field rotates at the end face of the line can be obtained by the magnetic attraction force of the field by the magnetic material or the magnet 10.

In addition, at the connection point between units in the line, for example, as shown in FIG.
The field 6 is transferred from the magnetic belt 3' of the next stage unit 1 to the magnetic belt 3 of the next stage unit 1, and at this time, the speeds of both units are made different to accelerate the field in positive and negative directions, but the end face of the field is on the surface of the magnetic belt. When moving by adhering to the unit 1',
1, wear due to slip occurs between the field end face and the surface of the magnetic material bar of the magnetic belt.
That is, in FIG. 4a, the magnetic field 7 that moves while adhering to each magnetic material bar 4' of the magnetic belt 3' of the unit 1' is attached to the magnetic belt of the unit 1 which is rotating at a faster speed than the magnetic belt 3' of the unit 1'. When moving onto each magnetic bar 4 of No. 3, the magnetic bar 4 is attached from behind to the column field 7, which has moved by adhering to the magnetic bar 4' on the drive wheel at the connecting portion of both units. It enters the lower part of the row field magnet while slipping with the catch-up field end face, and as the field moves, the row field magnet 7 moves to the magnetic material bar 4 as shown in FIG. 4b, and the magnetic material bar 4' It is left behind while slipping with the end face, thereby completing the transition between the units of the column field 7. At this time, as shown in Fig. 4a and b, by giving the front edge shoulder of each magnetic material bar an appropriate curved surface, the magnetic material bar is By smoothing the contact of the leading edge against the field end face, and by giving the shoulder of the leading edge at the lower end of each row field a suitable curved surface, the magnetic material is smoother when the row field overtakes the magnetic material bar. This softens the contact with the trailing edge of the manufactured bar, thereby preventing the occurrence of impact on the field when passing between units, and reducing wear on both. Furthermore, forming the lower end of each row of field magnets into a wear allowance portion 11 made of a magnetic material softer than the bar made of magnetic material also prevents the wear and tear of the magnetic belt, which is more difficult to repair than the field magnet. It is effective in preventing If a bar made of magnetic material is easier to repair, then the lower end of the magnetic material bar may be made of a softer magnetic material or magnet than the lower end of the field. Just make it hard.

As described above, in the present invention, a magnetic belt is constructed by juxtaposing bars made of magnetic material, divided into magnetic circuits, and each bar made of magnetic material is connected to this by a corresponding flexible member. Since the multi-polar field divided in the width direction is magnetically attracted, the magnetic field 6 does not attract locally or increase the magnetic resistance as in the case where the magnetic field is not divided as shown in Fig. 2B. As shown in Figure 2A, there are six pairs of N-S1
The magnetic pole faces of the pair (attracted to the magnetic material pieces) are dispersedly attracted to the magnetic material pieces, and the magnetic circuit passing through each pair of magnetic material pieces is short as shown, and the magnetic resistance is small.

In addition, the magnetic adsorption surface with the magnetic material piece becomes larger,
Consistent with the effects of increasing the magnetic flux density passing through the magnetic material pieces that affect the attraction force, and increasing the amount of magnetic flux, the magnetic attraction force of the field magnet to the magnetic belt becomes uniform, resulting in a stable attraction force. Therefore, stable driving can be performed.

Furthermore, since the bottom of the bar made of magnetic material is provided with a concave curved surface with the same curvature as the outer circumferential surface of the drive wheel and idler wheel, the drive wheel revolves in full contact with the outer circumference of the electromagnetic or magnetized wheel, thereby reducing the noise from the drive wheel. Rotational force is transmitted well. Note that the concave curved bottom surface of the bar made of magnetic material is not limited to this embodiment.

[Brief explanation of drawings]

FIG. 1 is a front view showing the basic configuration of an embodiment of the present invention, FIG. 2 is a perspective view of the main parts, FIG. 2A is an explanatory diagram of the magnetic circuit in a multipolar field,
Figure B is an explanatory diagram of a magnetic circuit in a unipolar field.
FIG. 3 is an enlarged front view of the main part, and FIGS. 4a and 4b are explanatory views of the operation of the magnetic belt and the field at the transition portion, respectively. 1... Belt conveyor unit, 2a, 2b...
... Drive wheel, 3 ... Magnetic belt, 4 ... Bar made of magnetic material, 5 ... Universal joint, 6 ... Field, 7 ... Row field, 8 ... Coupling member, 9 ... Division field, 10...
Magnetic material or magnet.

Claims (1)

[Claims] 1. A magnetic belt formed by connecting a plurality of bars made of magnetic material arranged side by side with their axes facing in the belt width direction and forming an endless belt with a universal joint between a pair of drive wheels and idle wheels. A magnetic belt conveyor unit is constructed by extending the magnetic belt conveyor unit around the bar, and a field device is constructed by connecting field magnets in rows with flexible members and arranging them in parallel so as to achieve the desired magnetic coupling to the magnetic material bar. By applying a magnetic attraction force between the magnetic belt and the field device, the conveyor unit can be moved along a conveyor line formed by connecting the conveyor units in the longitudinal direction. The traveling body is moved to follow the circumferential movement of the magnetic belt, and at least the outer peripheral surface of the driving wheel of the pair of driving wheels and idlers is formed of a magnetic material or a magnet, and the bottom surface of the bar made of magnetic material is It has a concave curved surface that is in full contact with the outer circumferential surface of the driving wheel and has a curvature equivalent to that of the outer circumferential surface of the driving wheel, and each of the column-shaped fields of the field device further comprises a plurality of small field magnets in each column. Belt conveyor type magnetic adsorption traveling body device. 2. The belt conveyor type magnetic adsorption traveling body device according to claim 1, characterized in that the front end shoulder portion of the upper surface of the bar made of magnetic material is chamfered. 3. The belt conveyor type magnetic adsorption traveling body device according to claim 1, wherein the front edge shoulder of the lower end face of the magnetic pole of the field is chamfered. 4. The belt conveyor type magnetic attraction traveling body device according to claim 1, wherein either the lower end of the magnetic pole of the field or the bar made of magnetic material is made of a softer magnetic material than the other. .