JPH06171503A - Rail running vehicle - Google Patents

Abstract

PURPOSE:To allow a vehicle to run stably on a guide rail of mono-rail type in its curving part. CONSTITUTION:A front 3a and a rear guide unit 3b are installed on the undersurface of a running body 1 traveling along a guide rail 2. and a left pair of and a right pair of guide rollers 7a, 7b, 7c, 7d, 9a, 9b, 9c, 9d are rotatably furnished on swing arms arranged at a certain interval in the advancing direction on these guide units 3a, 3b and the left and right side faces of the guide rail 2 are pinched. Therein each swing arm is supported with horizontal rotatability by a shaft having the vertical axis in the center in width direction of the vertical plate 2b of the rail 2.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to the structure of a traveling vehicle in an unmanned conveyance system or the like that travels along a guide rail laid in a factory or the like.

[0002]

2. Description of the Related Art When a pair of front and rear guide units each including a set of traveling wheels and guide rollers are horizontally rotatably mounted on the lower surface of a traveling machine body of a traveling vehicle of this type. , Fact fair 1-27
As disclosed in Japanese Patent No. 492, each guide unit is provided with traveling wheels at both ends of an axle that is horizontally arranged at right angles to the traveling direction while straddling over a guide rail, and a center is provided on the upper surface of the left and right center of the axle. A plate is provided, and the axle is configured to horizontally rotate about the center plate. The front and rear sides of the axle are left and right via a swingable arm and a link mechanism. A means for urging the pair of guide rollers so as to be sandwiched between the left and right side surfaces of the guide rail is provided.

With such a configuration, the pair of left and right guide rollers guides curved leftward or rightward in plan view, even if the laying accuracy of the guide rails and the accuracy of the lateral widths of the guide rails themselves are poor. Although it is possible to press and hold the left and right side surfaces of the rail independently of each other, there is a problem that the structure for that purpose becomes extremely complicated. It is an object of the present invention to solve this problem and provide a traveling vehicle that can travel stably on a turning portion.

[0004]

In order to achieve the above object, the present invention provides a guide unit arranged on the lower surface of a traveling body traveling along a guide rail for sandwiching the left and right side surfaces of the guide rail. In a railroad traveling vehicle in which a pair of left and right guide rollers are appropriately arranged in the traveling direction,
The pair of left and right guide rollers is rotatably supported by a swing arm, and the swing arm is rotatable about a vertical axis with respect to the guide unit on a substantially horizontal center line between the left and right side surfaces of the guide rail. It is configured to be pivotally supported.

[0005]

DESCRIPTION OF THE PREFERRED EMBODIMENTS Next, an embodiment of the present invention will be described. Reference numeral 1 is a traveling machine body of a traveling vehicle which is mounted on a guide rail 2 having a substantially I-shaped cross section, and reference numerals 3a and 3b are the same as those described above. A pair of front and rear guide units arranged on the lower surface of the traveling machine body 1, and the machine frame 10 of one of the guide units 3a receives power from a drive motor 4 capable of rotating in the forward and reverse directions via a transmission mechanism 5 to drive traveling wheels. 6, and the traveling wheels 6 roll on the upper surface plate 2a of the guide rail 2. In the machine frame of the front guide unit 3a, four guide rollers 7a, 7b,
7c and 7d are provided so as to sandwich the left and right side surfaces of the vertical plate 2b of the guide rail 2. The machine frame 11 of the rear guide unit 3b is provided with an idler traveling wheel 8 that rolls on the upper surface plate 2a of the guide rail 2 and the guide rail 2
Guide rollers 9a, 9 sandwiching the left and right side surfaces of the vertical plate 2b of
b, 9c and 9d are provided.

The structure of these guide rollers will be described in more detail. As shown in FIG.
1. A rotary support shaft 13 is attached to the tip end of the horizontal arms 12, 12 which are fixed to the upper and lower flanges of the first bolt with bolts in a plan view.
The swinging arm 14 is horizontally rotatably attached via the above, and the guide rollers are rotatably attached to both ends of each swinging arm 14. At this time, as shown in FIG. 4, the position in plan view of the rotary support shaft 13 that rotatably supports the swing arms 14 is approximately the thickness (H1) of the vertical plate 2b of the guide rail 2. A pair of guide rollers 7a on both left and right sides, which are set so as to be in the central position and are sandwiched,
The distance between opposing outer peripheral surfaces such as 7b is set to be substantially equal to the distance of the thickness (H1) of the vertical plate 2b.

The front guide unit 3a is horizontally rotatably connected to the front portion of the traveling machine body 1 in the traveling direction via the machine frame 10 and the shaft supporting portion 15, and the rear guide unit 3b is connected to the front guide unit 3a. Through the machine frame 11 and the shaft supporting portion 16, the traveling machine body 1 is horizontally rotatably connected to a rear portion in the traveling direction. The shaft support portions 15 and 16 have a width dimension (2 L
It is assumed that the vehicle 1 is on the left-right centerline 18 of the traveling vehicle body 1) (see FIG. 3). In other words, the front guide unit 3a
Is a pair of left and right guide rollers 7a, 7b at the front portion thereof.
It is possible to rotate horizontally with respect to the traveling machine body 1 around the vertical axis of the shaft support portion 15 located in front of the guide unit 3b in the rear portion, and the guide unit 3b in the rear portion is located behind the pair of left and right guide rollers 9c, 9d in the rearward portion. It is capable of rotating horizontally with respect to the traveling machine body 1 around the vertical axis of the shaft support portion 16 located.

On the upper surface of the traveling machine body 1, there is provided a conveyor roller 17 having a built-in drive motor capable of carrying the luggage W and transporting the luggage W laterally with respect to the traveling direction.
Reference numeral 19 is a stopper for preventing the luggage W from falling sideways, and the stopper 19 is vertically movable by an actuator such as an electromagnetic solenoid (not shown). Also,
When forming a U-shaped or L-shaped traveling path in a plan view with a combination of a straight portion and a curved portion, a straight portion having a certain length is integrally formed at both ends of the guide rail 2 of the curved portion. However, by connecting this straight portion and the end portion of the other linear guide rail 2 to each other, the rigidity of the guide rail of the curved portion is increased, and since the two guide rails are connected by the straight portion, The work is extremely easy and the connection accuracy can be improved.

With this configuration, when the traveling machine body 1 travels along the guide rail 2 that curves to the left, for example, in plan view, as shown in FIG. 3, the shaft support portions 15, 16 at the left and right centers of the traveling machine body 1 are used. Since the front and rear guide units 3a and 3b rotate horizontally around the
Since most of a and 3b are deviated to the outside of the turning from the left and right center line 18 of the traveling machine body 1, the respective guide units 3a and 3b.
guide roller 7c, 7d and guide roller 9 in FIG.
The portions where c and 9d sandwich the left and right side surfaces of the guide rail 2 are largely outside the turning radius with respect to the left and right center line 18 of the traveling body 1, and can efficiently support the centrifugal force due to the turning of the traveling vehicle. Therefore, it is possible to effectively prevent the traveling machine body 1 from tilting downward toward the outside of the turn.

In each of the guide units 3a and 3b, a pair of left and right guide rollers are provided on the vertical plate 2 of the guide rail 2.
Since it is attached to the swing arm 14 that horizontally rotates about the vertical axis of the rotation support shaft 13 located substantially in the center of the width direction of b, the distance between the opposing outer peripheral surfaces of the pair of left and right guide rollers is vertical. Even when set to be equal to the widthwise dimension of the plate 2b, the opposing outer peripheral surfaces of the left and right guide rollers are curved leftward or rightward in a plan view of the vertical plate 2b of the guide rail 2. Always contact the right and left side surfaces at almost right angles without any gaps, and no twisting will occur between both guide rollers.

Particularly, in one guide unit, a pair of left and right guide rollers, which are appropriately spaced apart in the front and rear in the traveling direction, are individually attached to a swingable arm that can be horizontally rotated. The twisting of the unit does not occur, and the turning section can be stably driven. In the present invention, the pivot portions 15 and 16 of the guide units 3a and 3b with respect to the traveling machine body 1 are set at the front-rear intermediate positions between the pair of left and right front guide rollers and the pair of left and right rear guide rollers in the traveling direction. You can do it. Further, the traveling wheels 6 and 8 may be configured to be in contact with the ground or the like on the left and right sides of the guide rail 2.

[0012]

As described above in detail, according to the present invention, the pair of left and right guide rollers on the front side and the pair of left and right guide rollers on the rear side in the traveling direction of one guide unit are independent of each other. Since it is attached to a swing arm that can be horizontally rotated with the guide rail, since the center axis of rotation of the swing arm is on the substantially horizontal center line between the left and right side surfaces of the guide rail, Since the abutting surfaces of the opposing outer peripheral surfaces of the pair of sandwiched guide rollers are always substantially at right angles to the side surfaces, both the left and right guide rollers, whether they are straight sections or swivel sections of the guide track, are left and right of the guide track. Can follow both sides smoothly. As a result, an unnecessary twisting action does not occur on both the guide rollers, the swing arm, and by extension, the guide unit, and there is an effect that the swivel portion can travel stably.

The structure therefor is also a very simple structure in which the pair of left and right guide rollers are rotatably attached to the swing arm and the rotation center position of the swing arm is set to a predetermined position. Therefore, the manufacturing cost can be reduced.

[Brief description of drawings]

FIG. 1 is a side view of a traveling vehicle.

FIG. 2 is a front view taken along the line II-II of FIG.

FIG. 3 is a plan view of a traveling vehicle.

FIG. 4 is an enlarged plan view of an essential part taken along the line IV-IV of FIG.

[Explanation of symbols]

 1 traveling machine body 2 guide rail 2b vertical plate 3a, 3b guide unit 6, 8 traveling wheel 7a, 7b, 7c, 7d guide roller 9a, 9b, 9c, 9d guide roller 10, 11 machine frame 12 horizontal arm 13 turning spindle 14 Swing arm 15, 16 Shaft support

Claims (1)

[Claims] 1. A pair of left and right guide rollers for sandwiching the left and right side surfaces of the guide rail are provided in a guide unit arranged on the lower surface of a traveling body that travels along the guide rail, and are appropriately arranged in the traveling direction. In the rail running vehicle
The pair of left and right guide rollers is rotatably supported by a swing arm, and the swing arm is rotatable about a vertical axis with respect to the guide unit on a substantially horizontal center line between the left and right side surfaces of the guide rail. A railroad traveling vehicle characterized by being configured to be pivotally supported on.