JP2002308412A - Carriage conveying device - Google Patents

Abstract

PROBLEM TO BE SOLVED: To silently travel a carriage regardless of a main line route or a branch route of rails. SOLUTION: This carriage conveying device is furnished with the carriage 11, the rails 12 to travel the carriage 11 and plural driving wheels 95 to apply driving force to the carriage to travel the carriage 11 along the rails 12 by frictionally engaging with the carriage 11. The carriage 11 is constituted of two front and rear carries 21, 22 and a carriage main body 23 loaded on these front and rear carriers 21, 22. Each of the carriers 21, 22 is constituted of at least one of trolleys 31-34 traveling on the rail 12 and is free to rotate around a vertical shaft 62 against the carriage main body 23. The driving wheels 95 are arranged on required points along the main line route 81 and the two branch routes 83 of the rails 12.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a trolley transport device used for transporting a vehicle body on a trolley along a predetermined route in an automobile factory, for example, and relates to a main line and a branch line branched therefrom. The present invention relates to a carriage transport device having a line.

[0002]

2. Description of the Related Art As a bogie transport device of this type, a bogie, a rail for running the bogie, and a plurality of propulsion forces for causing the bogie to travel along the rail by frictionally engaging with the bogie are applied to the bogie. The driving wheel is provided, and the rail is composed of a main line path and a branch path branched from the main line path, driving wheels are arranged at required places on the main line path, and a chain conveyor is arranged along the branch line path. It is known that a chain conveyor includes a pair of endless chains arranged parallel to each other along a branch path, and a plurality of divided rails that are connected to the two chains and carry a truck. .

[0003]

In the above conventional apparatus, the bogie is propelled by the driving wheels on the main route, so that the bogie can be moved relatively quietly, but on the branch route, the bogie is driven by the chain conveyor. Therefore, a relatively loud sound is generated as the carriage moves.

[0004] A plurality of split rails lie on the branch path, and occupy a considerably large movable area. When a person approaches the movable area for maintenance of the conveyor or the like, the degree of danger is large.

[0005] Further, since the conveyor is driven so that a plurality of carts are placed on the divided rails and started and stopped at the same time, the chain may be extended or rattled.・ It is a factor that generates noise.

An object of the present invention is to provide a bogie transport device that allows a bogie to run quietly irrespective of a main route and a branch route.

[0007]

According to the present invention, there is provided a bogie transporting apparatus, wherein a bogie, a rail for running the bogie, and a propulsive force for frictionally engaging the bogie and running the bogie along the rail are applied to the bogie. And a plurality of drive wheels for driving the vehicle, wherein the bogie is constituted by two front and rear carriers and a bogie main body mounted on the front and rear carriers, and each carrier has at least one running on a rail. It is a trolley and is rotatable about a vertical axis with respect to the bogie main body, and the rail is used for changing the direction of the carrier whose center of rotation is located at the same distance as the center of rotation of both carriers on the main path. The front and rear turntables are divided into two front and rear branch paths that are branched from the main path. Drive wheels so desired locations on at least one of the branch path is one that is located.

In the truck transport device according to the present invention, the truck driven by the drive wheels on the main route is transferred to the branch route after the carrier is turned by the turntable, and the drive wheels are moved on the branch route. It is made to run by. Therefore, the carriage can be run quietly irrespective of the main route and the branch route.

Embodiments of the present invention will be described below with reference to the drawings.

In the following description, the front and rear refer to the left side as the front and the opposite side to the rear with reference to FIG. 1, and the left and right refer to the left and the right as viewed from the front. I do.

Referring to FIGS. 1 and 2, a cart 11 and
A running rail 12 for running the carriage 11 is shown.

The trolley 11 is composed of two front and rear first and second carriers 21 and 22, and a trolley main body 23 mounted on these two carriers 21 and 22. A car body W is mounted on the carriage body 23.

The first carrier 21 is composed of two front and rear trolleys 31 and 32 and a first connecting rod 41 extending between the two trolleys 31 and 32. The second carrier 22 includes two front and rear third and fourth trolleys 33 and 34, and a second connecting rod 42 extending between the two trolleys 33 and 34.

As shown in detail in FIG. 3, the first trolley 31 is provided with a pair of left and right vertical side plates 51 which are arranged opposite to each other at a predetermined interval, and is penetrated in the left and right directions below the both side plates 51. A pair of front and rear running rollers 53 attached to both ends of the front and rear horizontal roller shaft 52, and front and rear guide rollers 54 attached to the upper portions of both side plates 51 so as to be located above the roller shaft 52. ing. Second to fourth trolleys 32-34
Has the same structure as the first trolley 31. 2nd to 4th
The same reference numerals are assigned to the first trolley corresponding parts of the trolleys 32 to 34 for convenience.

The first connecting rod 41 is formed of a horizontal square pipe extending in the front-rear direction. A driven surface 61 is formed on the right side surface of the first connecting rod 41. At a position near both front and rear ends of the first connecting rod 41, the first connecting rod 41 is attached to the center of the first and second trolleys 31 and 32 in the front and rear direction by the front and rear vertical pins 6.
2, the first and second trolleys 31 and 32 are connected so as to be free to swing in the horizontal direction. 2nd connecting rod
42 is the same as the first connecting rod 41, and the third and fourth trolleys 33, 3
Connected to 4.

The second carrier 22 has the same structure as the first carrier 21. The portions corresponding to the first carrier of the second carrier 22 are denoted by the same reference numerals for convenience.

Referring to FIG. 4, at both front and rear ends of the bogie main body 23, the bogie main body 23 includes first and second connecting rods.
The first and second carriers 21 and 22 are connected to the intermediate portions of the front and rear directions 41 and 42 by front and rear trunnion joints 63 so that the first and second carriers 21 and 22 can swing freely in the horizontal and vertical directions.

FIG. 4 shows a carrier rotation stopping mechanism. That is, the carrier detent mechanism includes a square upper horizontal plate 64 fixed to the trunnion joint 63.
And a square-shaped lower horizontal plate fixed to the first connecting rod 41 so as to face the upper horizontal plate 64 at an interval downward.
65, a thrust ring 68 interposed between the upper horizontal plate 64 and the lower horizontal plate 65 and fitted to the vertical shaft portion of the trunnion joint 63, and an upper positioning projection 66 fixed to the lower surface of the upper horizontal plate 64, And a lower positioning projection 67 fixed to the upper surface of the lower horizontal plate 65.

Referring to FIG. 5, the upper positioning projection 66 and the lower positioning projection 67 have a square shape which substantially divides the upper horizontal plate 64 and the lower horizontal plate 65 on the outside of the thrust ring 68 into 180 degrees. They are located in quadrants with intervals.

As shown by black arrows in FIG. 5, when the lower positioning projection 67 is rotated 90 degrees clockwise together with the first carrier 21 with respect to the bogie main body 23, the upper positioning projection 66 is attached to the lower positioning projection 67. And the first carrier 21 cannot rotate any more.

Although not shown, the carrier detent mechanism is also provided on the second carrier 22. However, at least one of the first and second carriers 21 and 22 may have a carrier detent mechanism.

The rail 11 is composed of a pair of right and left U-shaped rail members 71 arranged so that the openings face each other. The rail member 71 has a lower flange 72 supporting the traveling roller 53 and an upper flange 73 sandwiching the guide roller 54.
have.

As shown in FIG.
Two turntables 81 are provided. With these turntables 81, the rail 11
It is defined as a main route 82 extending forward through 81 and two front and rear branch routes 83 extending rightward from both turntables 81 in parallel to each other. Main route 82 and both branch routes 83
There is a center of rotation of both turntables 81 at the intersection of. The distance between the rotation centers of both turntables 81 is equal to the distance between the horizontal swing centers of the first and second carriers.

On the upper surface of each turntable 81, a direction changing rail 84 extending through the center of rotation is provided. The structure of the direction changing rail 84 is the same as the structure of the traveling rail 11.

Referring to FIG. 2, at a plurality of locations along the main line route 82, main line traveling bogie driving devices 91 are arranged.
Referring to FIG. 6, a direction changing bogie driving device 92 is disposed on the upper surface of the turntable 81. Further, a plurality of branch traveling bogie drive devices 93 are arranged at a plurality of locations on both branch paths 83. However, the trolley drive 93
May be provided only in one of the two branch paths 83.

The arrangement pitch of the carriage driving device 91 for traveling on the main line is slightly smaller than the total length of the carriage 11, that is, the total length of the first and second connecting rods 41 and 42.
The arrangement pitch of the branch traveling bogie driving device 93 is slightly smaller than the length of each of the first and second connecting rods 41 and 42.

Referring again to FIG. 4, the carriage driving device 91 for traveling on the main road is pressed by the driven surface 61 and has an upward motor.
It comprises a drive wheel 95 fixed to an output shaft 94 and a rectangular cross-section cylindrical support 96 having a motor 101 on the front end face.

The rear end surface of the support 96 is fixed to the ground so that the right end of the drive wheel 95 enters the carrier moving path. The support 96 is provided with driving wheels for the carrier moving path.
It has the elastic force to move the right end of 95 back and forth. Drive wheel
The elastic force of the support 96 when the right end of the 95 is displaced from the carrier moving path, the first and second connecting rods 41 and 42 and the driving wheel 95 frictionally engage to move the carriage 11 along the rail 12. The propulsive force to travel is applied to the carriage 11.

The direction changing bogie drive unit 92 and the branch running bogie drive unit 93 have the same structure as the main line running bogie drive unit 91.

When the front end of the first connecting rod 41 reaches any one of the main line traveling bogie driving devices 91, the main line traveling bogie driving device 91 is activated, and the bogie 11 is moved a distance corresponding to the entire length thereof. Only sent forward. In this way, the carriage 11 is continuously driven by sequentially activating the main-line traveling carriage drive device 91.

With the direction changing rail 84 connected to the main line route 82, the bogie 11 is fed onto both the turntables 81. Then, both turntables 81 are rotated 90 degrees by means not shown. The two-way changing rail 84 is rotated together with the two turntables 81, and the bogie body 23 is rotated.
, The first and second carriers 21 and 22 are rotated together with the two-way changing rail 84. As a result, the two-way changing rail 84 is connected to the two branch paths 83.

When the direction changing bogie driving device 92 is activated, the bogie 11 is sent out from both the turntables 81, and the sent out bogie 11 is put on the both branch paths 83. Thereafter, as in the case of the main line traveling vehicle drive device 91, the branch traveling vehicle drive device 93 is sequentially activated, so that the vehicle 11 is transported on the branch route 83.

Next, various variations of the bogie will be described with reference to FIGS. In the following description, parts corresponding to the parts shown in FIGS.
The same reference numerals as in FIG. 6 are used.

FIG. 7 is a cart for transporting a car body W longer than the car body W placed on the cart 11 shown in FIG.
11 is shown.

This trolley, like the trolley shown in FIG. 1, is constituted by two front and rear first and second carriers 21 and 22, and a trolley main body 23 mounted on both carriers 21 and 22. .

The first and second carriers 21 and 22 correspond to FIG.
Has the same structure as the first and second carriers 21 and 22 shown in FIG. The bogie main body 23 is longer in the front-rear direction than the bogie main body 23 shown in FIG. As a result of the first and second carriers 21 and 22 being connected to both front and rear ends of the elongated bogie main body 23, a space is created between the first and second carriers 21 and 22. The bogie main body 23 is provided with a hanging spacer 101 so as to fill the space. On the right side surface of the spacer 101, an auxiliary driven surface 102 is provided which is flush with the driven surface 61 of the first and second connecting rods 41 and 42.

FIGS. 8 and 9 show a trolley 11 suitable for transporting a conveyed article W which is shorter than the car body W mounted on the trolley 11 shown in FIG.

This carriage 11 is also composed of two front and rear first and second carriers 21 and 22 and a carriage body 23 mounted on both carriers 21 and 22, similarly to the carriage 11 shown in FIG. Have been.

The first carrier 21 is constituted by a single first trolley 31, and is shorter than the first carrier 21 shown in FIG. The second carrier 22 is the second carrier shown in FIG.
It has the same structure as the carrier 22. However, the second carrier 22 is not provided with a carrier locking mechanism. The length of the bogie main body 23 in the front-rear direction is naturally shorter than that of the bogie main body 23 shown in FIG. A driven surface 111 that is flush with the driven surface 61 of the second connecting rod 42 is provided on the right side surface of the single first trolley 31.

Referring to FIG. 9, two front and rear turntables 81 are provided on the traveling rail 12, and the front turntable 81 has a small diameter as the first carrier 21 is shortened. The rear branch route 83 extends straight like the rear branch route 83 shown in FIG.
From the middle, it is bent so as to gradually approach the rear branch route, and the interval between the two branch routes 83 is narrowed. The direction changing bogie drive unit 92 is provided only on the rear turntable 81, and the branch traveling bogie drive unit 93 is provided only on the rear branch path 83.

In the carriage 11 sent out from both the turntables 81 to both the branch paths 83, only the second carrier 22 is driven by the branch traveling carriage drive unit 93, and the first carrier 21
Is pulled by the second carrier 22 so that the front branch path 83
Can be moved up. The second carrier 22 precedes the first carrier 21 by an amount corresponding to the narrowing of the front and rear branch paths 83, and the bogie main body 83 is moved forward and backward such that the rear end of the bogie main body 23 precedes the front end. It moves in a state inclined to the direction.

In FIG. 9, both branch paths 83 may be parallel as in the case shown in FIG. In this case, the second
The carrier 22 is preferably provided with a carrier locking mechanism. Conversely, in FIG. 6, both branch routes 83
As in the case shown in (1), the distance between the two may be narrowed. In that case, it is a matter of course that the first and second carriers 21 and 22 do not require a carrier locking mechanism.

FIG. 10 shows a trolley 11 which is smaller than the trolley shown in FIG.

The bogie 11 comprises two front and rear first and second carriers 21 and 22, and a bogie main body 23 mounted on these two carriers.

The first carrier 21 is constituted only by a single first trolley 31. The second carrier 22 is constituted by another fifth trolley 121 having a length 31 longer than that of the first trolley. Driven surfaces 122 and 123 are formed along upper right side edges of the first and fifth trolleys 31 and 121, respectively.

[0045]

According to the present invention, the bogie can run quietly irrespective of the main route and the branch route of the rail.

[Brief description of the drawings]

FIG. 1 is a side view of a carriage transport device according to the present invention.

FIG. 2 is a plan view of the same.

FIG. 3 is a transverse cross-sectional view taken along a line III-III in FIG. 1;

FIG. 4 is a transverse sectional view taken along the line IV-IV in FIG. 1;

FIG. 5 is a horizontal cross-sectional view taken along line VV of FIG. 4;

FIG. 6 is a plan view of a rail branch point of the apparatus.

FIG. 7 is a side view of another carriage transport device according to the present invention.

FIG. 8 is a side view of still another carriage transport device according to the present invention.

FIG. 9 is a plan view of a rail branch point of the bogie transport device shown in FIG. 8;

FIG. 10 is a side view of still another carriage transport device according to the present invention.

[Explanation of symbols]

 11 cart 12 rail 21, 22 carrier 23 board body 31-34 trolley 81 turntable 82 main line route 83 branch route 95 drive wheel

Claims (1)

[Claims] 1. A bogie 11, a rail 12 for running the bogie 11, and a plurality of drive wheels for applying a propulsive force to the bogie 11 by frictionally engaging the bogie 11 to run the bogie 11 along the rails 12. 95, and the cart 11 is composed of two front and rear carriers 2
1 and 22, and a bogie main body 23 mounted on the front and rear carriers 21 and 22.
2 comprises at least one trolley 31 running on rails 12
34, and is rotatable about a vertical axis 62 with respect to the bogie main body 23. The rail 12 has a main path 82 and a main path.
The two front and rear branch paths 83 branched from the main line path 81 via a carrier direction changing front and rear turntable 81 having a rotation center at a distance equal to the rotation centers of the two carriers 21 and 22 on the carrier 82. A bogie transport device in which drive wheels 95 are arranged at required locations on the main route 81 and drive wheels 95 are arranged at required locations on at least one of the two branch routes 83.