JPH0537945Y2 - - Google Patents

Description

[Detailed Description of the Invention] Industrial Application Field The present invention relates to a linear motor type conveyance device having front and rear carriers each having a front wheel and a rear wheel and traveling on a monorail using a linear motor as a drive source.

Conventional technology and its problems Conventionally, as shown in FIG.
Front and rear carriers 14 ₁ and 14 ₂ having front and rear wheels 12 and 13, respectively, run on the top using a linear motor 17 as a drive source, and convey objects (not shown).

The linear motor 17 is composed of, for example, a primary armature 15 provided on the front and rear carrier sides and a secondary conductor 16 provided on the monorail 11 side. A pair of horizontally pivotable connecting means 18 and 19, respectively.
It is provided opposite to the rail between the front and rear carriers via.

However, in such a linear motor type conveyance device 10, the connecting means 18 and 19 do not have a structure that allows rotation in a vertical plane (that is, tilting in the front and back direction), so the front and rear carriers 14 ₁ and 14 ₂ are not connected to the rail 1.
When traveling on an inclined (rising or descending) part within the vertical plane of 1, the front and rear carriers 14 ₁ , 14 ₂
The problem is that it cannot be bent in the front-rear direction, which hinders smooth running.

In addition, the linear motor 17 can obtain a large thrust by reducing the gap S between the primary armature 15 and the secondary conductor 16, but in reality, the front and rear carriers 14
When _{1,14 2} travels on a slope in a vertical plane,
In order to avoid the primary side armature 15 coming into contact with this inclined portion, the gap S is made large. For this reason, there is also the problem that sufficient thrust cannot be obtained.

Means for Solving the Problems The present invention is a linear motor type conveyance device in which a primary side or a secondary side of the linear motor is provided between front and rear carriers each having front and rear wheels that use a linear motor as a drive source and run on a rail. wherein the front and rear carriers and the primary side or secondary side of the linear motor are connected via a connecting means that is rotatable in a vertical plane, and the primary side or secondary side is supported by elastic means, and A configuration in which rollers are provided on the inclined portion of the rail in the vertical plane, or rollers are provided on the primary side or the secondary side,
This solves the above problem.

Function For example, assume that the primary side of a linear motor is provided between the front and rear carriers, and the secondary side is provided on the rail side.

When the front and rear carriers travel on an inclined part of the monorail in the vertical plane, the front and rear carriers can turn (bend) in the vertical plane at the connecting means, so that they can pass along the inclined part.

At this time, even if the primary side comes into contact with the inclined portion of the rail, the primary side can escape due to the elastic support means, and the running of the front and rear carriers will not be hindered. Therefore, the gap between the primary side and the secondary side of the linear motor can be reduced, and the linear motor can obtain a large thrust.

Further, the frictional resistance caused by the contact is reduced by the inclined portion of the rail or the roller provided on the primary side or secondary side of the carrier,
The front and rear carriers allow for smooth running.

Embodiments Hereinafter, embodiments of the present invention will be described based on the drawings.

The linear motor type conveying device 30 shown in FIGS. 1 to 5 uses a linear motor 31 as a driving source to run front and rear carriers 32 ₁ and 32 ₂ to convey objects (not shown).

The front and rear carriers 32 ₁ , 32 ₂ have a front frame 35 equipped with a front wheel 34 running on the inner side 33a of a rail 33 having a U-shaped cross section, and a rear frame 37 equipped with a rear wheel 36, which are connected to each other by a first connecting means. 40, 40 and
It is connected to the horizontal frame 38 via second connecting means 41, 41.

The front and rear frames 35 and 37 each include four upper side rollers 42 that sandwich the inner and outer surfaces of the rail 33, four lower side rollers 43, and two lower guides that can come into contact with the lower surface of the rail. A roller 44 is provided.

An electromagnetic brake 45 is provided near the rear wheel 36.

The first connecting means 40, 40 allow rotation in a vertical plane, and are respectively connected to the front and rear frames 3.
5 and 37, and a horizontal pin 52 that is pivoted horizontally so as to pass between a pair of connecting members 51 and 51 provided on the support plate 50.

The second connecting means 41, 41 allow rotation in a horizontal plane, and have vertical pins 53, 53 provided perpendicularly on both sides of the horizontal pin 52, and U-shaped portions of the vertical pins 53, 53, respectively. and a horizontal rotation member 54 which is pivotally connected to and rotates horizontally.

The horizontal pin 52 and the vertical pin 53 are connected to the front and rear wheels 3.
A cross-shaped cross member 5 located directly below 4 and 36
5 (see FIG. 2), respectively.

Four elastic support means 56, 56, 56, 56, which support the primary armature 60, which will be described later, are attached to L-shaped support plates 57, 57 provided on the side surface of the horizontal frame 38 in parallel with the rail 33, respectively. The vertical support shafts 59, 59 and the spring 5 loosely fitted to the support shaft 59
It consists of 8. The support shaft 59 is supported by the horizontal rotation member 54 so as to be vertically movable.

The linear motor 31 includes a primary armature 60 provided on the horizontal frame 38, and a secondary conductor 61 made of a non-magnetic material such as aluminum provided on the lower surface of the rail 33 made of a magnetic material such as iron. It is made up of. Note that the rail 33 itself may be a secondary conductor. Alternatively, the secondary side may be constructed by laminating a secondary side conductor 61 made of a magnetic material such as iron and a non-magnetic material such as aluminum on the rail 33 made of a non-magnetic material such as aluminum to form a sanderch structure. .

Power is supplied to the primary armature 60 by a current collector 62 provided on the rear frame 37 that is connected to the inner surface 3 of the rail 33.
Trolley rail 63 laid in the longitudinal direction of 3a
It is done in contact with.

The running speed or running distance of the front and rear carriers 32 ₁ , 32 ₂ is detected by an encoder 64 provided on the front frame 35 facing the front wheels 34 .

Travel control of the front and rear carriers 32 ₁ , 32 ₂ is performed by control panels 66 , 66 provided at both ends of a pipe 65 having a rectangular cross section attached to the horizontal turning members 54 , 54 .

A curved portion 6 in the vertical plane that is the boundary between the uphill sloped portion 75 and the horizontal portion 69 of the rail 33
A plurality of rollers 72 are provided on both side surfaces 33b, 33b (FIGS. 3, 4, and 5) of the roller 7.

Next, the operation will be explained.

The primary armature 60, which receives electric power from the trolley rail 63, generates thrust between it and the secondary conductor 61, causing the front and rear carriers 32 ₁ and 32 ₂ to travel in the direction of arrow A in FIGS. 1 and 3.

As shown in FIG. 3, when the front and rear carriers 32 ₁ and 32 ₂ reach the curved portion 67 in the vertical plane of the rail 33, the front and rear frames 35 and 37 are guided by the lower guide rollers 44 and 44, and the third As shown in the figure, it is inclined along a curved portion 67 and bent in the front-rear direction with respect to the horizontal pivot member 54 about the horizontal pin 52 . That is, the front and rear frames 35, 37
is bent in the front-back direction with respect to the horizontal frame 38.

At this time,. The primary armature 60 is the secondary conductor 6
1, but it contacts the roller 72 and escapes against each spring 58 of the four elastic support means 56, so it passes through the curved portion 67 while contacting each roller 72.

Similarly, when the front and rear carriers 32 ₁ and 32 ₂ pass through a curved portion 67 in the vertical plane that is the boundary between the inclined portion 75 and the horizontal portion 69 in FIG. 5, the primary armature 60 contacts the roller 72. (imaginary line) and escapes against the spring 58. Of course, the maximum displacement amount in this case is made to be within the range of the amount that can be escaped by elastically deforming the spring 58.

As a result, when the front and rear carriers 32 ₁ , 32 ₂ travel along the curved portion 67, the front and rear carriers 32 ₁ , 32 2
32 ₂ is bent in the front-rear direction along the curved portion 67 at the first connecting means 40, 40, so it can run smoothly.

Furthermore, even in a structure in which the primary armature 60 is sufficiently close to the secondary conductor 61, at the curved portion 67, the elastic support means 56 allows the primary armature 60 to
The contact resistance is reduced by the rollers 72, and the running of the front and rear carriers 32 ₁ and 32 ₂ is not hindered.

In addition, like the roller 72' in FIGS. 6 and 7,
The aforementioned rollers may be supported on the primary armature 60 side by brackets 73, 73 provided on the support plates 57, 57. In this case, the roller 72' contacts horizontal protrusions 74, 74 provided on the side surfaces 33b, 33b of the rail 33.

In addition, the front and rear carriers 32 ₁ and 32 ₂ are the rails 33
When traveling on a curved part in the horizontal plane (for example, the part "68" in FIG. 11), the front and rear frames 35 and 37 are moved by the upper and lower guide rollers 42 and
The direction is regulated in the tangential direction of this curved part by the guidance of the vertical pins 53, 5 with respect to the horizontal frame 38.
Bend horizontally around 3. That is, the front and rear carriers 32 ₁ , 32 ₂ are horizontally bent at the second connecting means 41 , 41 and run smoothly along the curved portion 68 .

Next, the linear motor type conveying device 70 shown in FIGS. 8 to 11 has second connecting means 81, 81 provided inside the first connecting means 80, 80.

Components different from those in the embodiment shown in FIGS. 1 to 5 will be described with different reference numerals.

The first connecting means 80, 80 allow rotation within a vertical plane, and are respectively connected to the front and rear frames 35,
A support plate 90 provided in 37 and this support plate 90
It is composed of a horizontal pin 92 that is pivoted horizontally so as to pass over a pair of connecting members 91, 91 provided in the , and a vertical pivot 95 that is pivoted to the horizontal pin 92.

The horizontal pins 92, 92 are located directly below the front and rear wheels 34, 36.

The second connecting means 81, 81 allow rotation in a horizontal plane, and each of the second connecting means 81, 81 allows the vertical rotation member 95
It is composed of a vertical pin 93 provided perpendicularly to the vertical pin 93, and a horizontal pivot member 94 whose U-shaped portion is pivotally connected to the vertical pin 93 and supports the horizontal frame 38.

The distance L ₁ between the vertical pins 93, 93 is set shorter than the distance L ₂ between the horizontal pins 92, 92.

Next, the operation will be explained.

When the front and rear carriers 32 ₁ and 32 ₂ reach the curved portion 67 in the vertical plane of the rail 33, the front and rear frames 35 and 37 move toward the guide roller 4 on the lower surface.
4 and 44 along the curved portion 67, and is bent relative to the vertical pivot member 95 about the horizontal pin 92. That is, the front and rear frames 35,
37 is bent relative to the horizontal frame 38.

At this time, the primary armature 60 is connected to the secondary conductor 61
However, as shown in FIG. 10, it comes into contact with the roller 72 and escapes against each spring 58 of the four elastic support means 56, so the curved portion in the vertical plane while contacting each roller 72 67 will be passed.

As a result, the primary armature 60 is supported by the elastic support means 5
6, the front and rear carriers 32 ₁ and 32 ₂ are bent in the front and rear direction at the first connecting means 80 and 80 and run along a curved portion 67.

Also, as shown in FIG. 11, the front and rear carriers 32 ₁ ,
32 ₂ approaches the curved portion 68 in the horizontal plane of the traveling rail 33 in the direction of arrow B, the front and rear frames 35, 37 move against the upper and lower side rollers 42, 4.
3, the direction is regulated by the tangential part of the curved part 68, and the horizontal turning member 94 is rotated around the vertical pin 93.
bend horizontally. That is, the front and rear carriers 32 ₁ ,
32 ₂ is horizontally bent at the second connecting means 81,81.

As a result, the primary armature 60, which is provided between the tips of the vertically rotating members 95, 95 that are oriented in the tangential direction together with the front and rear frames 35, 37, always has its center as the point of contact with the curved portion 68, and is oriented in the tangential direction. Since it moves along the secondary conductor 61 while changing direction, the front and rear carriers 3
Run 2 ₁ and 32 ₂ .

The embodiment shown in FIGS. 8 to 11 has a curved portion 68 in the horizontal plane compared to the embodiment shown in FIGS. 1 to 5.
Even if the curve is steep, the primary armature 60 reliably faces the secondary conductor 61, so the thrust does not decrease.

Incidentally, friction can be reduced by connecting each vertical pin and horizontal pin of each embodiment to each connecting member via a metal bearing (not shown).

Further, although the monorail transport device described above is a suspension type, it may be a straddle type.

Furthermore, although the primary armature is provided on the trolley and the secondary conductor is provided on the rail, this relationship may be reversed.

Effects of the Invention As described above, according to the linear motor conveyance device of the present invention, the front and rear carriers can run smoothly even if the rail has a curved portion in the vertical plane. Furthermore, since linear motor drive does not depend on the adhesive resistance of the wheels, it is possible to run at large inclination angles.

Therefore, the rails can be laid freely, and the layout of the conveyance system becomes easy.

Furthermore, even if the primary armature comes into contact with the rail at a curved portion in the vertical plane, the primary armature can escape due to the elastic support means, so the primary armature It can be brought sufficiently close to the secondary conductor and sufficient thrust can be obtained.

And the curved part in the vertical plane, or
By providing rollers on the primary or secondary side of the carrier, the contact resistance between the primary or secondary side and the rail is reduced, allowing the front and rear carriers to run smoothly.

[Brief explanation of the drawing]

Figures 1 to 11 show embodiments of the present invention, of which Figure 1 is a front view of the first embodiment, a sectional view taken along arrow 1-1 in Figure 2, and Figure 2 is a view of the first embodiment. Fig. 3 is a schematic front view of the front and rear carriers running on an inclined section, and Fig. 4 is a sectional view taken along arrow 2-2 of Fig. 3.
-4 arrow sectional view, Figure 5 is a schematic front view of the front and rear carriers running on the slope, Figure 6 is a front view of the roller mounting structure different from Figures 3 and 4, and Figure 7 The figure is a sectional view taken along the line 7-7 in FIG. 6.
Figures 8 to 11 show the second embodiment, in which:
Figure 8 is a front view, and a sectional view taken along the arrow 8-8 in Figure 9.
Figure 9 is a sectional view taken along arrows 9-9 in Figure 8, Figure 10 is a schematic front view of the front and rear carriers traveling on an inclined section, and Figure 11 is a schematic front view of the front and rear carriers traveling on a curved section in a horizontal plane. FIG. FIG. 12 is a schematic front view of a conventional example. 30, 70...Linear motor type conveyance device, 31
... Linear motor, 32 ₁ , 32 ₂ ... Front and rear carriers, 33 ... Rail (monorail), 34 ... Front wheel, 36 ... Rear wheel, 40, 80 ... Connection means, 5
6...Elastic support means, 60...Primary side armature (primary side), 61...Secondary side conductor (secondary side), 67...
Curved portion (slanted portion), 72, 72'...Roller.

Claims (1)

[Scope of Claim for Utility Model Registration] (1) A linear motor type conveyance device in which the primary side or secondary side of the linear motor is provided between front and rear carriers each equipped with front and rear wheels that use a linear motor as a drive source and run on rails. The front and rear carriers and the primary side or secondary side of the linear motor are connected via a connecting means that is rotatable in a vertical plane, and the primary side or secondary side is supported by an elastic support means, and A linear motor type conveyance device, characterized in that a roller is provided on an inclined portion of the rail in a vertical plane. (2) In a linear motor type conveyance device in which a primary side or a secondary side of the linear motor is provided between front and rear carriers each having front and rear wheels running on a rail using a linear motor as a drive source, the front and rear carriers and the linear The primary side or the secondary side of the motor is connected via a rotatable connecting means in a vertical plane, the primary side or the secondary side is supported by an elastic support means, and the primary side or the secondary side is A linear motor type conveyance device characterized by being equipped with rollers.