JP3219047B2 - Tracked bogie system - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a tracked truck system such as a linear carrier system, and more particularly to a branch of a running track.

[0002]

2. Description of the Related Art A tracked truck system such as a linear transport vehicle system is used for transporting articles in clean rooms, hospitals, factories, warehouses, and the like. In such a system, it is generally difficult to provide a branch. For example, a truck is branched using a turntable, or a truck is transported by a traverser and branched. However, in such a branch, it is necessary to once stop the carriage completely, and a shock may be applied to a conveyed article when getting on or off the turntable or the traverser, which is not suitable for conveying a fragile article such as a semiconductor substrate. .

[0003] FIG. 8 shows a branch taking a railway point as an example. A branch made up of the main path 2 and the branch path 3 is provided on the track 1 and guide rollers of the linear carrier are guided by the track side walls 4 and 5, and the branch rails 6 and 7 are operated as indicated by arrows in the figure to branch. Shall be. Then, a gap always occurs between both ends of the branch rails 6 and 7 and the side walls 4 and 5, and an impact is applied to the linear carrier at this portion. It is not suitable for transporting fragile items.

[0004]

SUMMARY OF THE INVENTION An object of the present invention is to diverge while running a track bogie and without a break in a guide surface for a guide roller between a branch rail and an inner surface of a side wall of the track. It is in. Additional objects of the present invention are:
The guide roller is always guided by either the inner surface of the track side wall or the branch rail. An additional object of the invention according to claim 2 is to eliminate wobble of a tracked truck at a branch.

[0005]

SUMMARY OF THE INVENTION The present invention relates to a system in which the left and right guide rollers of a tracked truck are guided by the inner surfaces of the left and right side walls of the track to travel. A branch rail for switching between the rails is provided in the track, and the contact surfaces of the left and right side walls with the guide rollers are partially cut out in the height direction, and the leading end and the rear end of the branch rail are cut out. , The front and rear ends of the branch rails are arranged to be superimposed on the left and right side walls in a vertical view.

[0006] Preferably, the center of the contact surface of the left and right side walls with the guide roller is cut out, and the leading and trailing ends of the branch rail are accommodated therein. Also preferably, on the upstream side of the branch,
A guide member for positioning the inside of the guide roller is provided (claim 2). The tracked truck is not limited to the linear carrier shown in the embodiment, but may be a general tracked truck.

[0007]

According to the present invention, the leading and trailing ends of the branch rail are superimposed on the left and right side walls of the track in a vertical view. For this reason, the branch rail and the side wall of the track intersect near the front end and the rear end, and the guide surface to the guide roller is not interrupted between them. Therefore, it is possible to diverge without impact while keeping the tracked truck running.

According to the present invention, the contact surface of the side wall with the guide roller is partially cut out in the height direction, and the leading end and the rear end of the branch rail are arranged so as to overlap with the cutout in a vertical view. For this reason, even when there is no branch rail, a portion other than the notch of the track side wall remains as a contact surface with the guide roller, and in a state where the branch rail is present, the tip of the branch rail is hidden in the side wall, so that the guide is guided by the side wall. Can be smoothly transitioned from the state of being guided by the branch rail to the state of being guided by the branch rail.

According to the second aspect of the present invention, a guide member is provided upstream of the branch, for example, immediately upstream of the branch to guide the inner surface of the guide roller. At the position of the guide member, the guide roller is guided on the outer surface by the raceway side wall and on the inner surface by the guide member. When the guide roller enters the branch, it can be smoothly branched without wobble.

[0010]

1 to 7 show an embodiment using a linear carrier system as an example, but a branch can also be formed in a general overhead traveling vehicle or the like. FIG. 1 shows a branch plane. The track 10 is branched into a main path 12 and a branch path 14, 15 and 17 are side walls on the main road side, 16 and 18 are side walls on the branch road side, and 19, 20, and 20.
Reference numerals 21 and 22 denote traveling surfaces of traveling wheels of the linear transport vehicle, a traveling surface 21 branches off from the traveling surface 19, and a traveling surface 22
Branch from 0.

Reference numeral 24 denotes a branch rail, which is indicated by a solid line and a chain line 2 in the figure.
In the state of a solid line that guides toward the branch road 14 side, the side wall 15 and the front end 26
The tip 26 overlaps the side wall 16 in a vertical view in a state of a chain line that guides the main path 12 side. 28 is the branch rail 2
4, a rear end 30 is a swing center, and the branch rail 24 is swung between a solid line and a chain line in the figure by a mechanism (not shown).
Switch branches. The rear end 28 overlaps the junction of the side walls 17 and 18 in a vertical view, and 32 is a guide member provided immediately upstream of the branch.

Referring to FIGS. 1 and 2 to explain the cross section of the track at the branch, the side walls 15 and 16 at the branch are connected to the upper side wall 35 and the upper side wall 35, which are in contact with the upper contact surfaces of the guide rollers 47 and 48 of the linear carrier. 38, and the upper and lower side walls 34, 37 in contact with the lower part of the grounding surface, and the notches 40,
The tip end 26 of the branch rail 24 is accommodated in 40 and comes into contact with the center of the contact surface of the guide rollers 47 and 48. 41-44
Are the guide surfaces of the upper side walls 35, 38 and the lower side walls 34, 37 for the guide rollers 47, 48.

Reference numeral 46 denotes a main body of the linear carrier, and the guide rollers 47 and 48 are mounted on the chassis, for example, four wheels per chassis, 49 and 50 are bearings, 51 and 52 are traveling wheels, and the traveling surface is Drive 19-22. 54
Is a ground-side (track-side) coil, 56 is a bogie-side conductor, and the linear carrier is accelerated or decelerated by a magnetic field from the coil 54 to run and stop, and 58 is for preventing dust from being generated from the track. Reference numeral 60 denotes an opening of the cover, from which the loading platform 62 is protruded from the linear carrier body 46 by, for example, bogie connection. The arrangement of the coil 54 and the like is arbitrary.

FIGS. 3 to 6 show the operation at the branch.
It is assumed that the road branches to the branch road 14 as shown by the solid line in FIG. Then, the switching of the guide from the side wall 15 to the branch rail 24 occurs at the point A in FIGS.
Of the branch rail 24, the guide surface 64 on the branch road side intersects with the guide surface of the side wall 15 at the point A, and between the two guide surfaces between the guide surfaces 64. There is no gap, and the guide roller 47 is always guided by one of the guide surfaces, and the linear transport vehicle does not experience a step between the branches. If the angle between the two guide surfaces is reduced in the vicinity of the point A, the two guide surfaces are almost smoothly continuous, and the guide can be switched to the branch rail 24 very smoothly. Reference numeral 66 denotes a positioning member for receiving and positioning the distal end 26 of the branch rail 24, and may not be provided.

FIGS. 5 and 6 show the role of the branch rail 24 when the linear carrier travels to the main road 12 side. Near the tip 26 of the branch rail 24, the guide surface 68 on the main road side is
Since the front end 26 is housed in the cutout portion 40, it intersects the guide surface of the side wall 16 at the point B, and if the angle of the two guide surfaces at the intersection B is reduced as in FIGS. The vehicle can run smoothly without any step between the surfaces and without any impact caused by a sudden change in the guide direction. 70 is a positioning member for the tip end 26 of the branch rail 24, and need not be provided.

Returning to FIGS. 1 and 2, the operation of the guide surfaces 41 to 44 will be described. When the linear carrier travels straight toward the main road 12, there is no branch rail 24 on the side wall 15, and the upper and lower portions of the ground surface of the guide roller 47 are guided by the guide surfaces 41 and 42. On the other hand, at this time, since the side wall 16 itself curves toward the branch path 14, the guide roller 48 travels while being guided by the branch rail 24 at the center of the ground contact surface. When the linear transport vehicle travels toward the branch road 14, the guide surface 4
3, 44 guide the upper and lower portions of the contact surface of the guide roller 48, and the branch rail 24 guides the center portion of the contact surface of the guide roller 47. In either case, a stable guide having high symmetry, and the notches 40, 40 are provided at the center in the height direction of the guide surfaces of the guide rollers 47, 48 of the side walls 15, 16 to achieve such a result. can get.

FIG. 7 shows the arrangement of the rear end 28 of the branch rail 24. Similarly to the above, the side walls 17 and 18 are notched vertically near the rear end 28, and the rear end 28 is housed therein, and swings around the swing center 30. The rear end 28 penetrates into the side walls 17 and 18 in a vertical view. For example, in the state of being guided to the main road 12 side of the chain line in FIG.
And the guide surface of the side wall 17 intersect at the intersection C. If the angle between the two guide surfaces is made small here, 2
Since the two guide surfaces are substantially smoothly continuous, the impact caused by the transition of the guide surfaces can be ignored, and there is no gap between the guide surfaces. Similarly, in the state of being guided to the branch road 14 side, the guide surface of the guide rail 24 and the guide surface of the side wall 18 have an intersection D
In the same manner, the angle between the two guide surfaces is reduced at this portion so that the two guide surfaces can be connected almost smoothly without any step or gap between the guide surfaces.

The operation of the guide member 32 will be described. Immediately before branching, the guide rollers 47 and 48 have outer walls 15 and 16 on the outside.
Thus, the inside is guided by the guide member 32, and the posture is reliably determined. Since the vehicle enters the branch in this posture, even if the guide surface is not smoothly connected between the side walls 15 and 16 and the branch rail 24 at the switching portion of the guide to the branch rail 24, the branch can be smoothly performed without wobbling. Can be.

In the embodiment, the side walls 15 and 16 are in contact with the entire surface of the ground surface of the guide rollers 47 and 48,
The ends of the branch rails 24 were accommodated by cutting out the portions 5 and 16. Further, in the embodiment, the notch portions 40, 40 provided substantially at the center of the contact surfaces of the guide rollers 47, 48 have the tip 26
The side walls 15 and 16 were divided into two parts up and down to accommodate
Only the upper part or only the lower part of the side walls 15, 16 may be cut out.

[Brief description of the drawings]

FIG. 1 is a plan view of a branch portion of a linear carrier system according to an embodiment.

FIG. 2 is a sectional view of a track and a linear carrier used in the embodiment.

FIG. 3 is a diagram showing accommodation of the tip of a branch rail on a main road side track in the embodiment.

FIG. 4 is a plan view showing a state in which an upper track is removed from FIG. 3;

FIG. 5 is a diagram showing accommodation of the tip of a branch rail in a branch road side track in the embodiment.

FIG. 6 is a plan view showing a state where an upper track is removed from FIG. 5;

FIG. 7 is a diagram showing the rear end of a branch rail accommodated in a track.

FIG. 8 is a plan view showing a branch in a conventional example.

[Explanation of symbols]

 1,10 track 2,12 main road 3,14 branch road 4,5 side wall 15,16,17,18 side wall 19,20,21,22 running surface 24 branch rail 26 front end 28 rear end 30 swing center 32 guide member 34, 37 Lower side wall 35, 38 Upper side wall 40, 40 Notch 41, 42, 43, 44 Guide surface 46 Linear carrier body 47, 48 Guide roller 49, 50 Bearing 51, 52 Running wheel 54 Coil 56 Truck side conductor 58 Track cover 60 Opening 62 Loading platform 64, 68 Guide surface 66, 70 Positioning member

──────────────────────────────────────────────────続 き Continued on the front page (58) Fields investigated (Int. Cl. ⁷ , DB name) B60L 13/03 B61B 13/00 B61B 13/06 E01B 25/00

Claims (2)

(57) [Claims] 1. A system in which left and right guide rollers of a tracked truck are guided and guided by inner surfaces of left and right side walls of a track, and wherein the tracked truck is switched between a state where it is guided to a main road side and a state where it is guided to a branch road side. And the contact surfaces of the left and right side walls with the guide rollers are partially cut out in the height direction, and the leading end and the rear end of the branch rail are arranged in the cutouts. The tracked bogie system is characterized in that the front and rear ends of the branch rails are arranged so as to overlap in the left and right side walls in a vertical view. 2. The tracked bogie system according to claim 1, wherein a guide member for positioning the inside of the guide roller is provided on the upstream side of the branch.