JP2000006796A - Track carriage system - Google Patents

Abstract

PROBLEM TO BE SOLVED: To reduce the rail installation cost and to change the advancing direction of a carriage without changing the direction of the whole carriage by changing the direction of a drive wheel. SOLUTION: A carriage entering from the left upper side is stopped on a traverser 50, for example. When rotating rails 51, 52 are rotated CW at a right angle, only units 6, 8 are rotated by 90 deg. while the carriage itself is not rotated. Rotating rails 53, 54 are rotated CCW by 90 deg.. When the drive wheel unit 6 is driven, the units 6, 8 are temporarily guided by two fixed rails 56, 57 and advanced to the center section of the rotating rails 53, 54. When the rotating rails 53, 54 are rotated at a right angle, only the units 6, 8 are rotated by 90 deg. while the direction of the carriage is not changed, and the advancing direction of the carriage is changed by 90 deg.. When the drive wheel 6 is driven, the carriage is advanced to the right upper side, and the advancing direction is changed.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a monorail ground traveling type tracked truck system, and more particularly to a traverser thereof.

[0002]

2. Description of the Related Art FIG. 13 shows a layout of a tracked bogie system in a conventional example. Numeral 40 denotes two rails. For example, a plurality of automatic warehouse units 30 are arranged on one side of the loop, and conveyors 36 and 42 are arranged on the other side, and a carriage 41 conveys articles therebetween. The layout of this system is determined by the turning radius of the bogie 41, and the rail 40 protrudes from the area where the automatic warehouse unit 30 is disposed to the left and right by a length substantially corresponding to the turning radius. Further, between the upper part and the lower part of the loop of the rail 40, a useless space determined by the turning radius of the bogie 41 is required.
As described above, the larger the turning radius of the truck 41, the more wasteful space is required, which lowers the utilization rate of the floor area of a factory or a warehouse, and increases the construction cost of the building. Apart from this, the use of two rails is disadvantageous also in terms of laying costs.

[0003] Next, a traverser for changing the direction of the bogie is also known in the prior art. This is a type in which the bogie is mounted on a turntable to change the direction of the entire bogie, and is therefore large. Equipment needed.

[0004]

SUMMARY OF THE INVENTION An object of the present invention is to change the traveling direction of a bogie only by changing the direction of driving wheels and the like without changing the rail installation cost and changing the direction of the entire bogie. is there. An additional problem with the invention of claims 2 and 3 is that
The object is to prevent a driven wheel from hindering a turn. An additional object of the present invention is to provide a traverser that allows a bogie to bend without wobbling, and that can easily change the direction even with such a bogie.

[0005]

According to a first aspect of the present invention, a rail is laid on a floor surface, and a drive wheel guided by the rail is horizontally rotatably mounted on one side of a bottom surface of a vehicle body of a bogie.
A driven wheel traveling on the floor is horizontally rotatably mounted on the other side of the bottom of the bogie body, and a part of the rail is used as a rotatable rail. A tracked bogie system characterized in that the direction is changed. Preferably, the rail is configured to be able to retreat from the trajectory of the driven wheel at a turning position in the bogie traveling direction. More preferably, the driven wheels are arranged so as to be displaced from the drive wheels in the longitudinal direction of the bogie. Preferably, another horizontally rotatable wheel guided by the rail is provided at the front and rear positions of the driving wheel, and the rotating rail is separated into two for the driving wheel and the other wheel. Provide.

[0006]

The operation and effect of the first aspect of the invention will be described. According to the first aspect of the present invention, since a monorail may be used, material costs, installation costs, transportation costs, and the like of the rail are reduced. On the other hand, the bogie is supported by the driving wheels and the driven wheels on the other side, so that articles can be stably conveyed.
Here, one side of the cart is guided by the rail, and the other side is provided with horizontally rotatable driven wheels, so that the turning radius of the cart can be reduced. In particular, since the rail is offset to one side of the bogie, the bogie of the bogie to the outside of the rail at a curve can be reduced.

According to the first aspect of the present invention, a traverser is further provided by providing a turning rail, and the direction of the drive wheel unit is changed by turning the turning rail to change the traveling direction without turning the bogie itself. Can be. Therefore, the traveling direction can be changed without rotating the entire bogie,
The traveling direction of the bogie can be changed very easily.

According to the second aspect of the present invention, the rail can be retracted from the trajectory of the driven wheel at the traverser. For this reason, the bogie can take various traveling routes such as going straight and turning at right angles, and the layout of the traveling route becomes easy.
Here, if the positions of the driven wheels on the other side of the bogie in the front-rear direction of the bogie are shifted from the positions of the drive wheels, it becomes easy to change the traveling direction of the bogie to a right angle. That is, if the drive wheel and the other side driven wheel occupy the same position in the front-back direction of the bogie, the other side driven wheel will be located on the rail when the direction of the drive wheel is changed by 90 degrees. Become. Here, if the driven wheels on the other side are shifted from the drive wheels in the longitudinal direction of the bogie, the traveling direction of the bogie can be easily changed to a right angle.

[0009] Preferably, besides the drive wheels, other horizontally rotatable wheels such as drive wheels or driven wheels are provided on one side of the bottom surface of the vehicle body. In the traverser, two rotating rails are provided corresponding to each of the driving wheel and the other wheels. With this configuration, the traveling direction can be changed only by rotating the rotating rail without rotating the bogie itself.

[0010] More preferably, the driven wheels are provided in a pair along the longitudinal direction of the bogie, and the interval between them is shorter than the interval between the drive wheel and the other wheels. In this case, not only can the traveling direction of the bogie be easily changed to a right angle by the traverser, but also in other curves of the rail,
The bogie can be easily swung without wobbling the bogie and with a small protrusion from the rail.

[0011]

DESCRIPTION OF THE PREFERRED EMBODIMENTS An embodiment will be described with reference to FIGS.

[0012]

[Dolly] FIG. 1 shows a main part of the trolley 2. A drive wheel unit 6 and a driven wheel unit 8 are provided at a lower part of a bottom surface of the body 4 on one side of a center line along a forward direction of the body 4. A line connecting these is made parallel to the outer periphery of the side surface of the vehicle body 4. A pair of caster wheels 10 and 11 are provided on the other side of the bottom of the vehicle body 4.
Place. The axles of the caster wheels 10 and 11 are rotatable in a horizontal plane, and the axles of the drive wheel unit 6 and the driven wheel unit 8 are rotatable in a horizontal plane. Reference numeral 12 denotes a rail, 14 denotes a power supply line attached to the rail 12, and 16 denotes a floor surface on which the rail 12 is installed.

FIGS. 2 and 3 show the drive wheel unit 6.
Reference numeral 20 denotes a drive wheel, 22 denotes a traveling motor for rotating the drive wheel 20, and 21 denotes, for example, four guide rollers, which guide the drive wheel 20 by sandwiching the rail 12 from the left and right. These components are attached to a bracket 24, and the entire drive wheel unit 6 is attached to the vehicle body 4 at an attachment portion 26 so as to be pivotable in a horizontal plane.

FIG. 4 shows the structure of the driven wheel unit 8.
The driven wheel unit 8 is configured in the same manner as the drive wheel unit 6 except that the traveling motor 6 is not provided and a terminal (not shown) for contacting the power supply line 14 is provided instead. Then, the driven wheel 27 is guided by the rail 12 by, for example, four guide rollers 21. And mounting part 2
6, the driven wheel unit 8 is mounted so as to be pivotable in a horizontal plane.

FIG. 5 shows a traveling locus of the bogie 2 of the embodiment on a curve. For comparison, FIG. 6 shows that the rail 12 is disposed at the center of the bogie 3 and is run on the rail 12 using the units 6 and 8, and a pair of caster wheels 10 and
11 shows a locus in a comparative example provided with No. 11. In the embodiment of FIG. 5, the two units 6, 8 are guided by the rail 12, and the other side of the carriage 2 is supported by the caster wheels 10, 11. As a result, the carriage 2 is supported at four points, irrespective of the monorail, and articles can be stably conveyed. In addition, the drive wheel unit 6 and the driven wheel unit 8 are monorails.
Is rotatable in a horizontal plane, and the other side is supported by the caster wheels 10 and 11, so that the direction of the bogie can be rapidly changed and the turning radius can be reduced. Up to this point, the embodiment and the comparative example are common.

In the embodiment, since the units 6 and 8 are on one side of the bogie 2, the outer periphery of the side surface of the body 4 on the unit 6 and 8 side is constantly kept parallel to the line connecting the units 6 and 8. In the resulting curve, the outer periphery of the vehicle body is parallel to the tangent to the rail 12 at the midpoint of the units 6,8. Therefore, as shown in FIG. 5, the area where the vehicle body protrudes outside from the rail 12 on the curve is small. Next, when the curvature of the rail 12 is the same, as is apparent from a comparison between FIG.
Has a smaller turning radius. For this reason, the tracked bogie system can be made compact. Here, the caster wheels 10, 1
Looking at the movement of the outer periphery of the side surface of the bogie 2 on the side where 1 is provided, a point occurs where this position hardly moves in the curve. This point is shown as F in FIG. The meaning of this will be described with reference to FIG.

FIG. 7 shows the relationship between the positions of the caster wheels 10, 11 and the locus on the curve. The locus passing through A in FIG. 7 is a case where the caster wheels 10 are arranged in parallel with the drive wheel unit 6, and the caster wheels 10 show a complicated locus in a curve. The locus passing through B in FIG. 7 is a modified example in which only one caster wheel is arranged at the center on the other side in the vehicle body length direction. The locus of the caster wheels in this case is a simple one concentric with the rail 12,
Even if the vehicle body 4 turns at the center of the curve, the caster wheels hardly move, and a point G is generated in which only the rotation in the axle direction in the horizontal plane is required as the direction of the vehicle body changes. In this position, the caster wheel B hardly rotates, and a twisting motion with respect to the floor is likely to occur.

As is clear from FIG. 7, the smaller the distance between the caster wheels 10 and 11 is, the simpler the locus on the curve is, and the smaller the turn can be made. On the other hand, if one caster wheel is provided at the center of the vehicle body in the front-rear direction, twisting is likely to occur at the center of the curve. Therefore, a pair of caster wheels 10, 11 are provided on the other side of the vehicle body 4,
If the inter-wheel distance between them is shorter than the inter-wheel distance between the driving wheel unit 6 and the driven wheel unit 8, the trajectory on the curve is smoothed, and the wear of the caster wheels 10, 11 and the floor surface is reduced. In addition, dust generation can be reduced. The distance between the wheels is the distance between the ground points of the wheels.

FIG. 8 shows a pair of caster wheels 10 and 11.
5 shows a trajectory in a modified example in which only one drive wheel unit 6 is provided at the center of one side of the vehicle body. In this case, the vehicle body 4 is supported at three points and stable traveling is possible, but the vehicle body sways on a curve, and the vehicle body 4 protrudes largely outside the rail 12. The point at which the vehicle body largely protrudes from the rail 12 is shown as a point H in FIG. The reason why the vehicle body protrudes from the rail 12 is that, in the embodiment shown in FIG.
In the modification of FIG. 8, there is a position where the outer periphery of the side surface of the vehicle body 4 is not parallel to the rail 12.
This is to protrude greatly from 2 to the outside.

As is clear from FIGS. 5 to 8, in the embodiment, stable running is possible even on the monorail, the turning radius on the curve is small, the turning can be made almost at a right angle, and the caster wheels 10, 11 are twisted. Does not occur. Furthermore, the area where the vehicle body 4 protrudes from the rail 12 on the curve is small, and the interference range of the bogie 2 is narrow. Rail 12 for these
Can be reduced, and a compact layout can be achieved.

[0021]

[Traverser] The traverser of the embodiment and its operation will be described with reference to FIGS. In FIG. 9, 50 is a traverser, 51, 52, 53, and 54 are rotating rails. The rotating rails 51 and 53 are for rotating the driven wheel unit 8, and are rotating rails 52 and 54. Is for rotating the drive wheel unit 6. 56,5
7 is a fixed rail, 58 and 59 are car stops. Also I
Is the locus of the caster wheel 11, and J is the caster wheel 1.
It is a locus of 0.

In the traverser 50, for example, the truck 2 entering from the upper left side of the figure is stopped on the traverser. At this time, the drive wheel unit 6 is on the rotating rail 52, and the driven wheel unit 8 is It's above. The caster wheels 10 and 11 are located between the fixed rails 56 and 57 because the interval between the wheels is shorter than the interval between the wheels of the units 6 and 8.

When the rotating rails 51 and 52 are rotated clockwise in the figure, for example, at right angles, the carriage 2 itself does not rotate, and only the units 6 and 8 rotate 90 degrees. At this time, the position of the caster wheels 10, 11 does not change, and the units 6,
The direction is slightly changed by the vibration caused by the rotation of No. 8.
Next, the rotating rails 53 and 54 are moved, for example, 9 times counterclockwise in the figure.
Rotate 0 degrees. At this time, the caster wheels 10, 11 do not collide with any of the rotating rails 53, 54. When the drive wheel unit 6 is driven from here, the drive wheel unit 6 temporarily advances while being guided by the two fixed rails 56 and 57, and the units 6 and 8 advance to the center of the rotating rails 53 and 54. From this state, the rotating rails 53 and 54 are rotated, for example, at right angles. Then, the direction of the carriage 2 does not change, only the units 6 and 8 rotate by 90 degrees, and the traveling direction of the carriage 2 is 90 degrees.
Will be changed. In addition, the slight vibration at this time slightly changes the directions of the caster wheels 10 and 11. When the drive wheels 6 are driven from this state, the traveling vehicle 2 moves to the upper right side in the figure.

The caster wheels 10 and 11 are required to rotate twice at substantially right angles. However, since the directions of the casters 10 and 11 are slightly changed by the vibration when the units 6 and 8 are rotated beforehand, the wheels 10 and 11 are twisted. Without turning the axle in a new direction.

In the embodiment, as shown in FIG.
The traveling direction can be rotated by 90 degrees only by rotating the units 6 and 8 without rotating itself. Further, the caster wheels 10 and 11 can be prevented from obstructing the rotation. Here, the relatively long turning rail 53 is used to retreat from the running locus of the caster wheels 10, 11, but the fixed rail 56 is made a longer rotatable rail, and the running locus I, 11 of the caster wheels 10, 11 is moved. From J,
You may make it evacuate.

FIG. 10 shows a traverser 60 according to a first modification.
Is shown. In this modified example, the carriage 2 can move straighter downward in the figure than the traverser 60.
In the case of the traverser 50 shown in FIG. 9, the obstacle is that the fixed rail 57 moves on the caster wheels 10,
11 and collide. Therefore, in the traverser 60 of FIG. 10, a turning rail 61 whose turning center is eccentric from the longitudinal center of the rail is used. Reference numeral 15 denotes a new power supply line equivalent to the power supply line 14.

FIG. 11 shows a traverser 70 for turning the carriage 2 90 degrees instead of 180 degrees.
The traverser 70 itself is similar to the traverser 60 of FIG. 10, and two new rails 12, 12 are laid on the right side of the rotating rails 53, 61 in the drawing.

FIG. 12 shows a layout of the tracked bogie system according to the embodiment. 30 is an automatic warehouse unit, 31 is a rack, 33 and 34 are loading / unloading stations, 35
Is a track for running a stacker crane or the like. In the tracked bogie system, the bogie 2 is run using the main lines 73 and 74, and a loop 72 is formed using a part of the main line 73. One of the loops 72 includes the loading / unloading station 33 of the automatic warehouse unit 30,
On the other side, a conveyor 36 for connecting to a truck yard or the like is arranged. For example, the traverser 60 shown in FIG. 10 is used for the connection between the main lines 73 and 74. The device 75 is used. The branching / merging device 75 includes a pair of movable rails, one of which translates and the other of which pivots. When one of the translation rails is moved forward, the carriage 2 goes straight. On the other hand, retreat the translation rail,
When the turning rail is turned so as to connect the main line 73 to the upper side of the branch 72, it is possible to branch from the main line 73 to the upper side of the loop 72 and to merge from the upper side of the loop 72 to the main line 73.

In the embodiment, if only the drive wheel unit 6 and the driven wheel unit 8 are rotated without rotating the entire truck 2, the traveling direction of the truck 2 can be changed. Further, by providing the rotating rails 53 and 61, both the right angle change in the traveling direction of the bogie and the straight traveling can be performed. Further, when the distance between the caster wheels 10 and 11 is shorter than the distance between the units 6 and 8, it is easy to change the direction of the carriage 2 at right angles.

[Brief description of the drawings]

FIG. 1 is a plan view of a main part of a bogie in a track bogie system according to an embodiment.

FIG. 2 is a side view of a main part of the bogie in the embodiment.

FIG. 3 is a plan view of a main part of a bogie driving wheel in the embodiment.

FIG. 4 is a plan view of a main part of a rail-side driven wheel portion of the bogie in the embodiment.

FIG. 5 is a plan view showing an interference range of a bogie at a curve in the embodiment.

FIG. 6 is a plan view showing an interference range of a bogie at a curve in a conventional example.

FIG. 7 is a plan view showing a relationship between a caster wheel position and a locus in the embodiment.

FIG. 8 is a plan view showing a wobble of the vehicle body when the rail-side driven wheels are eliminated in the embodiment.

FIG. 9 is a plan view showing a traverser in the embodiment.

FIG. 10 is a plan view showing a traverser in a modified example.

FIG. 11 is a plan view showing a traverser according to a second modification.

FIG. 12 is a plan view showing a layout of the tracked truck system according to the embodiment.

FIG. 13 is a plan view showing a layout of a conventional example.

[Explanation of symbols]

 2 cart 4 body 6 drive wheel unit 8 driven wheel unit 10, 11 caster wheel 12 rail 14 power supply line 16 floor surface 20 drive wheel 21 guide roller 22 running motor 24 bracket 26 mounting part 27 driven wheel 30 automatic warehouse unit 31, 32 rack 33,34 Entry / exit station 35 Track 36,37 Conveyor 50,60,70 Traverser 51-54,61 Rotating rail 56,57,62 Fixed rail 58,59 Car stop 72 Loop 73,74 Main line 75 Branching / merging device

Claims (4)

[Claims] 1. A rail is laid on a floor surface, and a drive wheel guided by the rail is horizontally rotatably mounted on one side of a bottom surface of a bogie, and on another side of a bottom surface of the bogie body, A driven wheel traveling on the floor is horizontally rotatably mounted, and a part of the rail is used as a rotating rail, so that the direction of movement of the bogie is changed by the rotation of the rotating rail. Tracked bogie system. 2. The tracked bogie system according to claim 1, wherein the rail is configured to be retractable from the trajectory of the driven wheel at a turning position in the bogie traveling direction. 3. The tracked bogie system according to claim 2, wherein the driven wheels are arranged so as to be displaced from the drive wheels in the longitudinal direction of the bogie. 4. A horizontally rotatable other wheel guided by the rail is provided at front and rear positions of the driving wheel, and the rotating rail is separated into a driving wheel and another wheel. The tracked bogie system according to any one of claims 1 to 3, wherein two are provided.