JPH0446848B2 - - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION [Technical Field of the Invention] The present invention relates to a magnetic belt in a magnetic continuous transportation system used for the transportation of cargo and passengers.

[Prior art]

BACKGROUND ART In order to respond to transportation demands that are diversifying year by year, a magnetic continuous transportation system used for transporting cargo and passengers has been researched and proposed as a new transportation system.

In this magnetic continuous conveyance system, as shown in a perspective view of a part of the outline in Fig. 1, magnetic belt conveyor units B are arranged at a predetermined interval between traveling paths A laid in parallel. On the other hand, an electromagnet D is attached to a vehicle C traveling on the traveling path A, and the magnetic belt Ba of the magnetic belt conveyor unit B is driven in a desired direction at a desired speed by a drive motor Bb. At the same time, the electromagnet D of the vehicle C is energized and attracted to the magnetic belt Ba, and the vehicle C is caused to travel by the attraction force between the electromagnet D and the magnetic belt Ba.

By the way, the magnetic belt Ba used in the above-mentioned continuous magnetic transport system has conventionally been used, for example, as disclosed in Japanese Patent Application Laid-Open No. 113172/1983, which has an attracted surface that is attracted by a magnetic field or the like. A plurality of magnetic materials are arranged and attached to the belt body at appropriate intervals so that they intersect with the moving direction of the belt body made of flexible material and the attracting surface of the magnetic materials is exposed. There are known magnetic belts.

In this magnetic belt, the magnetic material is fixed to the belt body with a headed fastener such as a rivet or bolt, or the magnetic material is buried in the belt body with the surface to be attracted to it exposed. It is fixed by vulcanization adhesive.

However, this magnetic belt had the following problems.

(a) Since the magnetic material is mechanically fixed to the belt body using headed fasteners such as rivets or bolts, metal fatigue may occur in the headed fasteners due to vibrations when the magnetic belt runs. There was a problem in that the headed fastener was destroyed and the magnetic belt was damaged early.

(b) In the case of a magnetic belt in which a magnetic material is embedded in the belt body and vulcanized and bonded, when the magnetic belt bends, stress is generated at the boundary between the magnetic material and the belt body due to the elongation on the surface side. There was a problem in that concentration occurred, destroying the adhesive interface and causing the magnetic material to be removed early.

(c) Since a large attraction reaction force (traction force) is applied to the magnetic material to attract vehicles, etc., the surface of the belt body that comes into contact with the magnetic belt conveyor unit drive wheel wears quickly, causing the magnetic belt to flap while running. This causes problems such as cracks and breaks as well as cracks and breaks, resulting in poor durability.This, combined with the above-mentioned method of attaching the magnetic material, makes it difficult to use the magnetic material for a long time.

Furthermore, in Japanese Patent Application Laid-Open No. 57-85712, reinforcing core materials are arranged in parallel at predetermined intervals along the longitudinal direction on one surface of a belt made of an elastomer, and reinforcing core materials are arranged in parallel at predetermined intervals along the longitudinal direction of the belt made of elastomer. Magnetic material pieces are arranged side by side at predetermined intervals across the direction, and the belt and reinforcing core material are held and fixed from above and below by a pressing piece and the magnetic material pieces, so that the magnetic material pieces are exposed. A magnetic belt is disclosed in which other parts are coated with an elastomer in a predetermined shape.

The surface of this magnetic belt coated with elastomer has a continuous uneven shape, that is, a toothed belt shape, and is adapted to mesh with a gear-shaped drive wheel of a magnetic belt conveyor unit.

However, even with this magnetic belt, there were the following problems.

(a) Since the magnetic material piece is fixed to the belt by the presser piece fitted to the tip of the integrally provided fastening protrusion member, as mentioned above, the magnetic material piece is fixed to the belt by the vibration when the magnetic belt runs. There was a problem in that fatigue occurred and the holding piece was destroyed, causing the single magnetic belt to break at an early stage.

(b) Since the magnetic material piece is heavy, centrifugal force causes it to
In addition, when the belt stretches due to a large attraction reaction force (traction force) acting on the magnetic material pieces to attract vehicles, etc., the pitch between the convex parts of the belt becomes irregular, and the gear-like shape of the magnetic belt conveyor unit It is more likely to cause poor engagement with the drive wheel,
There was a problem that the driving force could not be transmitted to the magnetic belt.

[Purpose of the invention]

This invention was devised in view of these conventional problems, and is capable of firmly holding the magnetic member to the belt body, being able to be used for a long time, having excellent durability, and ensuring that the driving force is reliably transmitted. The object of the present invention is to provide a magnetic belt that is resistant to water.

[Structure of the invention]

In order to achieve the above object, the present invention includes a belt main body made of a flexible material, and a magnetic member provided in the width direction of the belt main body at a predetermined interval along the longitudinal direction of the outer peripheral surface of the belt main body. In the magnetic belt, the belt main body includes a plurality of V-belt parts forming a plurality of V-shaped grooves along the longitudinal direction of the inner circumferential surface thereof, and a center part in the width direction and a center part in the width direction. It has a center reinforcing layer and a side reinforcing layer respectively buried in the side portions,
The magnetic member consists of a magnetic attraction part exposed along the width direction of the belt body, and a buried part buried in the belt body on both sides of the magnetic attraction part, and both buried parts serve as side reinforcements of the belt body. The gist is that the center reinforcing layer is fixed by a locking member embedded in the inner circumferential side of the layer and embedded in the inner circumferential side of the center reinforcing layer.

[Embodiments of the invention]

Hereinafter, the present invention will be specifically described by way of examples with reference to the drawings.

FIGS. 2 to 7 show magnetic belts in the magnetic continuous transport system according to each embodiment of the present invention, FIG. 2 is a partial plan view of the first embodiment, and FIG. 4 is a perspective view of a notched portion showing the reinforcing layer of the first embodiment, FIG. 5 is an enlarged sectional view of the second embodiment, and FIG. 6 is a cutout portion showing the third embodiment. The perspective view and FIG. 7 are partially cutaway side views of the third embodiment.

In the figure, E is a magnetic belt in an embodiment of the present invention, and this belt body 1
magnetic members 2 in the width direction at intervals in the longitudinal direction of 0;
0 are arranged in a row, and a reinforcing layer 30 is embedded inside, and the magnetic member 20 has an embedded part 21 in the belt main body 10 on both sides thereof, and
The reinforcing layer 30 is composed of a center reinforcing layer 30a that reinforces the belt body 10, and side reinforcing layers 30b that reinforce each embedded portion 21 of the magnetic member 20 in the belt body 10.

To further explain this structure, the belt main body 10 is made of a flexible material such as rubber, and has V-belts continuous in the longitudinal direction at regular intervals in the width direction on its inner circumferential surface 10a. Part 11
are integrally formed.

In each of the embodiments, the V-belt portions 11 are arranged in four strips at equal intervals, and cover the entire inner circumferential surface 10a of the belt body 10, including each V-belt portion 11. A cover cloth 11a made of plain woven cotton cloth and rubber is provided, and this cover cloth 11a allows each V
This prevents the belt portion 11 from cracking, and also makes it possible to obtain an appropriate frictional force with the pulley of the drive motor when driving the magnetic belt E.

As described above, in this embodiment, a plurality of V-belt sections 11 are provided on the inner circumferential surface 10a of the belt main body 10.
By providing this, a frictional force for driving the present magnetic belt E is obtained, so that the shape of each V-belt portion 11 can be reduced in size. As a result, it is not only possible to secure a large traction force, but also to reduce the bending rigidity of the magnetic belt E, making it possible to reduce the diameter of the pulley.Furthermore, it is possible to reduce heat generation of the belt during driving, resulting in increased durability. can be significantly improved.

Further, as shown in FIGS. 2, 6, and 7, on the outer circumferential surface 10b of the belt body 10 described above, each magnetic field is arranged in a row in the width direction at regular intervals in the longitudinal direction of the belt body 10. As shown in the drawings, the member 20 is a strip-shaped iron piece with required length, width, and height dimensions, and the magnetic adsorption portion 22 is exposed along the width direction of the belt body 10.
and embedded portions 21 embedded in the belt body 10 on both sides of the magnetic adsorption portion 22, respectively.

The attachment of each magnetic member 20 to the belt body 10 is shown in FIGS. 3, 5, 6, and 7.
As shown in the figure, both the buried portions 21 are buried in the belt body 10, and the upper surface side of the both buried portions 21, that is, the outer circumferential surface 10b of the belt body 10.
By arranging the side reinforcing layer 30b on the side over the entire circumference of the belt main body 10, both buried portions 2
1 is firmly held on the belt body 10, and as shown in FIGS. 3 and 6, both buried portions 2 are
1 are fastened to each other by a string-like locking member 40 made of a rubberized blind cord (about 4 cords), and the magnetic member 20 is firmly attached to the belt body 10 in conjunction with a center reinforcing layer 30a to be described later. There is.

Therefore, even when a large traction force and centrifugal force are applied to each magnetic member 20 when the vehicle is running, there is no fear that the magnetic member 20 will separate from the belt body 10.

Further, as described above, the string-shaped locking member 40 works in conjunction with the center reinforcing layer 30a to prevent the magnetic member 20 from separating from the belt body 10 during operation of the magnetic belt E, and furthermore, This has the effect of firmly fixing each magnetic member 20 so that it can maintain a predetermined position during manufacturing of the present magnetic belt E, that is, during molding and vulcanization.

Further, as described above, since the magnetic members 20 are arranged in a row in the width direction at regular intervals in the longitudinal direction of the belt main body 10, the magnetic belt E is subjected to a bending action on the pulley during operation. At this time, the bending stress of the magnetic belt E can be minimized. As a result, the bending rigidity of the present magnetic belt E can be reduced, and the diameter of the pulley can be reduced.

Next, the reinforcing layer 30 will be explained. As shown in FIGS. 3 to 6, this reinforcing layer 30 is located and buried directly under the magnetic attraction part 22 of each magnetic member 20 described above, and is mainly used for belts. Main body 10
As described above, the center reinforcing layer 30a is embedded in the upper surface side of both the left and right buried portions 21 of each magnetic member 20, that is, on the outer circumferential surface 10b side of the belt main body 10, and is embedded in the center reinforcing layer 30a for reinforcing each magnetic member 20 in the belt main body 10. and a side reinforcing layer 30b for holding.

This center reinforcing layer 30a and side reinforcing layer 30
As shown in detail in FIG. 4, the reinforcing layer 30 consists of reinforcing cords 31a arranged at intervals in the width direction of the belt body 10, and a rubber compound 31b having good adhesion to the cords. On the outer peripheral surface of the main reinforcing layer 31 formed by calender coating,
To cover this, a breaker layer 32 formed by calender-coating a rubber compound 32b is integrally attached to reinforcing cords 32a arranged in a blind-like manner.

The main reinforcing layer 31 mentioned above is formed to have a thickness of about 5 mm in this embodiment, and the reinforcing cords 31a are made of steel cords with a diameter of 2.8 mm and a tensile strength of 800 kg per piece. ing.

However, it is of course possible to use a synthetic resin cord such as a polyester cord, a nylon cord, or an aromatic polyamide cord (trade name of aromatic polyamide fiber: Kevlar) as the reinforcing cord 31a.

Further, the breaker layer 32 is formed to have a thickness of about 1 mm in this embodiment, and the reinforcing cord 32a
840D/2, 40 pieces/50mm nylon cord (polyester cord, textile cord, etc. may also be used) is used, and this reinforcing cord 3
The cord angle (crossing angle) of the reinforcing cord 2a with respect to the reinforcing cord 31a is set at 45 to 70 degrees.

This breaker layer 32 is a main reinforcing layer 31 constituting the reinforcing layer 30 when manufacturing the magnetic belt E.
The reinforcing cords 31a of the main reinforcing layer 31 function as a stabilizing layer to prevent them from being disturbed by external forces, etc., and furthermore, the reinforcing cords 31 constituting the main reinforcing layer 31 are
The rubber compound 31b has the effect of acting as a buffer band to prevent separation between the rubber compound 31b and the rubber compound 31b. Therefore, low load,
When used under low stress, it is not necessary to use the breaker layer 32.

Next, the second aspect of the present invention shown in the enlarged sectional view of FIG.
A magnetic belt according to an embodiment will be explained.

The main structure of the magnetic belt E of this second embodiment is the same as that of the magnetic belt of the first embodiment shown in FIGS. 2 and 3, so a detailed explanation will be omitted here. The structural features of the second embodiment are as follows. That is, among the V-belt parts 11 formed on the inner circumferential surface 10a of the belt body 10 so as to be continuous in the longitudinal direction at regular intervals in the width direction of the belt body 10, at both ends in the width direction of the belt body 10. Each located V-belt portion 11s is connected to both buried portions 21 of the magnetic member 20.
This is a point placed in a position facing the .

In this way, each V-belt section 11 located at both ends in the width direction of the belt main body 10 among the V-belt sections 11
By arranging s to face both buried portions 21 of the magnetic member 20, when the present magnetic belt is in operation, the vicinity of both buried portions 21 of the magnetic member 20 is connected to the pulley of the drive motor that drives the present magnetic belt. In addition, it is possible to significantly reduce the stress received from the above-mentioned pulleys, and to reduce the interference of both buried portions 21 of the magnetic member 20 with the pulley, thereby significantly improving the durability of the vicinity of both buried portions 21 of the magnetic member 20. Furthermore, it is possible to reduce noise.

Next, a magnetic belt according to a third embodiment of the present invention shown in FIGS. 6 and 7 will be described.

The main structure of the magnetic belt E of this third embodiment is the same as that of the magnetic belt of the first embodiment shown in FIGS. 2 and 3, so a detailed explanation will be omitted here. The structural features of the third embodiment are as follows. That is, on the inner circumferential side of each V-belt section 11 formed continuously in the longitudinal direction at constant intervals in the width direction of the belt body 10 on the inner circumferential surface 10a of the belt body 10, there are provided gaps in the longitudinal direction. This is because the recessed portion 12 is formed and arranged at a certain angle.

Furthermore, the formation position of each recess 12 is made to match the position of the space between each of the adjacent magnetic members 20. In other words, the center of each convex portion 12a formed between each concave portion 12 and each magnetic member 2
It is made to coincide with the center of 0.

In this way, since the recesses 12 are formed on the inner peripheral side of each V-belt section 11 at intervals in the longitudinal direction, when the magnetic belt E is subjected to a bending action on the pulley during operation, the magnetic belt The bending stress of E can be further reduced. As a result, the bending rigidity of the magnetic belt E can be reduced, and the diameter of the pulley can be further reduced.

〔Effect of the invention〕

As described above, the present invention includes a belt main body made of a flexible material, including a plurality of V-belt parts forming a plurality of V-shaped grooves along the longitudinal direction of the inner peripheral surface thereof,
and a center reinforcing layer and a side reinforcing layer embedded in a center portion and a side portion in the width direction, respectively, and the width direction of the belt main body is spaced at a predetermined interval along the longitudinal direction of the outer peripheral surface of the belt main body. The magnetic member integrally provided in the belt body consists of a magnetic attraction part exposed along the width direction of the belt body, and a buried part buried in the belt body on both sides of the magnetic attraction part. , is embedded in the inner circumferential side of the side reinforcing layer of the belt main body, and is fixed by a locking member embedded in the inner circumferential side of the center reinforcing layer, so that the following effects can be achieved. be.

(a) Since the belt main body is formed so that its inner peripheral surface has a plurality of V-belt structures along the longitudinal direction, the contact area with the drive wheel of the magnetic belt conveyor unit is increased, and wedge-shaped contact is achieved. Therefore, the drive from the drive wheels can be reliably transmitted, a large tractive force can be ensured, and heat generation of the belt during driving can be reduced, so that durability can be greatly improved.

(b) The buried parts formed on both sides of the magnetic member are buried in the inner circumferential side of the side reinforcing layer, and are connected to the locking member embedded in the inner circumferential side of the center reinforcing layer, thereby reducing vibration during driving. The magnetic member is firmly held to the belt body without being easily damaged by the traction force of the vehicle, the centrifugal force, etc., and there is no fear that the magnetic member will come off, so it can be used for a long time.

(c) The reinforcing layer is composed of a center reinforcing layer that reinforces the belt body and a side reinforcing layer that reinforces each part of the magnetic member embedded in the belt body, so the center reinforcing layer ensures that the belt body is On the one hand, both embedded portions of the magnetic member can be firmly held in the belt body by the side reinforcing layer.

[Brief explanation of the drawing]

Fig. 1 is a perspective explanatory diagram showing an overview of the magnetic continuous transport system, Fig. 2 is a partial plan view showing the magnetic belt of the first embodiment, Fig. 3 is an enlarged sectional view taken along the line XX in Fig. 2, FIG. 4 is a perspective view of a cutout portion showing the reinforcing layer of the first embodiment, FIG. 5 is an enlarged sectional view of the magnetic belt of the second embodiment, and FIG. 6 is a cutout portion showing the magnetic belt of the third embodiment. The perspective view and FIG. 7 are partially cutaway side views of the third embodiment. 10... Belt main body, 10a... Inner circumferential surface of the belt main body, 10b... Outer circumferential surface of the belt main body, 11...
... V belt part, 20 ... Magnetic member, 21 ... Buried part, 22 ... Magnetic adsorption part, 30 ... Reinforcement layer, 30
a...Center reinforcing layer, 30b...Side reinforcing layer, 40...Lock member.

Claims (1)

[Claims] 1. A belt body made of a flexible material and magnetic members provided in the width direction of the belt body at predetermined intervals along the longitudinal direction of the outer peripheral surface of the belt body. In the magnetic belt, the belt body includes a plurality of V-belt portions forming a plurality of V-shaped grooves along the longitudinal direction of the inner peripheral surface thereof, and a center portion and a side portion in the width direction. A center reinforcing layer and a side reinforcing layer are respectively embedded in the belt body, and the magnetic member includes a magnetic attraction part exposed along the width direction of the belt body and embedded in the belt body on both sides of the magnetic attraction part. and a buried portion, both buried portions being buried in the inner circumferential side of the side reinforcing layer of the belt body and fixed by a locking member buried in the inner circumferential side of the center reinforcing layer. magnetic belt.