JPH07172753A - Ramp of overhead traveling car - Google Patents

Abstract

PURPOSE:To provide a ramp of an overhead traveling car that is able to convey even such an article as not formed with an engaged holding part as a corrugated cardboard case, without requiring any complex control in addition to simple construction. CONSTITUTION:A ramp 5 of an overhead traveling car 1 is composed of a horizontal lifter 26 being supported on a lifting belt 22 and an article bearer 28 hung from this horizontal lifter 26, while a truncated part 1 having such width as not come into contact with a belt conveyor even if the article bearer 28 comes down, is formed in this bearer 28.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an apparatus for delivering articles in a building such as a factory or a warehouse, and more specifically, a ceiling for traveling along rails arranged near the ceiling of the building to suspend and deliver articles. Regarding traveling vehicles.

[0002]

2. Description of the Related Art Conventionally, as an overhead traveling vehicle, there is known an overhead traveling vehicle including a traveling vehicle main body traveling along a rail arranged near the ceiling, and an elevating table provided so as to be vertically movable from the traveling vehicle main body. ing. The lifting platform is provided with a mechanism for gripping an article, and travels right above the article, lowers the lifting platform to grip the article, and then raises the lifting platform to the vicinity of the traveling vehicle body again and then travels. I was carrying it.

[0003]

However, the above-described conventional elevator of the overhead traveling vehicle has the following inconveniences. That is, since the lifting table is provided with the article gripping mechanism, the structure such as wiring for supplying electric power from the traveling vehicle main body to the lifting table and the control according to it are complicated. Further, the article gripping mechanism described above is capable of gripping something such as a bucket having an engaging portion on the peripheral edge, but cannot grip a article having no engaging gripping portion such as a simple cardboard case and cannot carry it. Was becoming.

[0004]

SUMMARY OF THE INVENTION In order to solve the above problems, the present invention is directed to a horizontal elevating body which supports an elevating table of an overhead traveling vehicle by a suspension belt, and is hung vertically from the horizontal elevating body. The article support is configured to have a notched portion having a width that does not come into contact with the transport conveyor even when the article support moves up and down.

[0005]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS An embodiment to which the present invention is applied will be described below with reference to the drawings. Reference numeral 1 denotes an overhead traveling vehicle used in the present invention, the traveling vehicle 1 being a rail 3 suspended from a ceiling 2.
It is composed of a traveling vehicle main body 4 that can travel along the traveling vehicle main body 4, and an elevating platform 5 that is located below the traveling vehicle main body 4 and can be lifted and lowered from the traveling vehicle main body 4.

The traveling vehicle main body 4 has drive wheels 6 and driven wheels 7 for traveling on the rail 3, and further has a traveling motor 8 for rotationally driving the drive wheels 6. In addition, a power supply device called a trolley (not shown) for supplying electric power to the traveling motor 8 and a lifting motor 9 described later is provided on the rail 3 side, and a current collector corresponding to the power supply device is provided on the overhead traveling vehicle 1 side. Is provided. In order to prevent the rolling of the overhead traveling vehicle 1 on the rail 3, a plurality of sets of guide rollers 13 that sandwich and roll the hanging portion 12 of the rail 3 are provided. Further, the position information of the overhead traveling vehicle 1 is obtained by passing through the passage blocking plate 14 suspended from the rail 3.
Is detected by the detector 15.

Next, a mechanism for lifting and lowering the lifting table 5 will be described. Drums 23 around which the suspension belts 22 are wound are attached near both ends of the horizontal shaft 21, and the horizontal shafts 21 are connected via timing belts 24 so as to rotate in synchronization with each other.
One horizontal shaft 21 is rotated by a lifting motor 9 via a belt 25 to wind and unwind the suspension belt 22. An encoder (not shown) is directly connected to the lift motor 9, detects the number of rotations of the lift motor 9, and detects the lift amount of the lift table 5 based on the value from the encoder. An elevating table 5 described below is fixed to the lower end of the suspension belt 22.

That is, the elevating table 5 includes a horizontal elevating body 26 to which the hanging belt 22 is fixed, four suspending rods 27 extending downward from the horizontal elevating body 26, and the suspending bar 27. A pair of article supports 2 suspended from the lower end of the holding rod 27.
8 and. The support 28 is connected and supported by two of the four suspension rods 27, which form a pair, and supports the bottom surfaces of the left and right ends of the article W to carry the article W. That is, as shown in FIG. 2, the article supporter 28 is separated into the left and right, that is, the separation distance (missing portion) 1 is in contact with the chain conveyor 36 of the carry-in / out station 31 described later even if the article supporter 28 moves up and down. The width is set so that it does not touch. Further, each article supporter 28 is provided with a bracket 30 in which a positioning guide hole 29 is formed in a vertical direction so as to project outward. The guide hole 29
Has a structure in which it is opened downward in a tapered shape in order to guide a guide pole 32 standing upright at a carry-in / out station 31 described later. Further, in the article supporter 28, as shown in FIGS. 2 and 3, the intervals between the bent portions 33 at the front and rear ends in the traveling direction of the article W are set to be slightly wider than the width of the article W to be conveyed. Therefore, in FIGS. 1 and 3, the deviation of the article W in the direction of the arrow A is regulated. Notches 34 formed in the article support 28
Is for guiding the article W mainly.

Next, the loading / unloading station 31 will be described. The loading / unloading station 31 is a roller conveyor 35.
It is composed of a pair of chain conveyors 36 which are transfer conveyors provided at the terminal end of the. The distance between the pair of chain conveyors 36 is set to be slightly smaller than the distance between the article supports 28 of the lifting table 5. That is, the lifting platform 5 of the overhead traveling vehicle 1 can be lowered without coming into contact with the chain conveyor 36. Further, in the loading / unloading station 31, guide poles 32 are erected on a base 38 which is an extension of the guide 37 of the roller conveyor 35, and the guide poles 32 are mounted on the bracket 30 of the article supporter 28. The lift 5 is positioned by penetrating the guide hole 29.

With the above-described structure, the overhead traveling vehicle 1 of the present invention transfers the article W to and from the loading / unloading station 31 by the operation described below. First, the overhead traveling vehicle 1 not transporting the article W is loaded into the loading / unloading station 31.
Stop right above. The stopped overhead traveling vehicle 1 drives the lifting motor 9 thereof, unwinds the suspension belt 22 of the drum 23, and lowers the lifting platform 5. The elevating table 5 is positioned by the guide poles 32 penetrating into the guide holes 29 provided in the bracket 30 while the elevating table 5 is descending. That is, during the penetration operation, since the lower surface of the guide hole 29 is opened downward in a tapered shape,
The guide pole 32 is inserted into the guide hole 29 while correcting a slight deviation in the front-rear direction and the left-right direction of the lift 5. Further, the elevating table 5 continues to descend, and the article supporter 28 descends from the article conveying surface of the chain conveyor 36 of the carry-in / out station 31 and comes into contact with the base 38, whereby the descending is completed. When the lowering of the lifting platform 5 is completed, the roller conveyor 35 and the chain conveyor 36 are driven together to bring the article W onto the carry-in / out station 31. When the article W reaches the position of the loading / unloading station 31, the lift motor 9 of the overhead traveling vehicle 1 is driven to rotate the rotating drum 23 in the direction in which the suspension belt 22 is wound up, and the lift table 5 starts to rise. The lift 5
During the ascending, the bearing surface of the article W becomes
To the article supporter 28 of the lifting table 5. Further, the ascending continues, the penetration state of the guide hole 29 and the guide pole 32 is released, and the highest position is reached. When the lifting of the lifting platform 5 is completed, the drive wheels 6 are rotated by the traveling motor 8 and the overhead traveling vehicle 1 starts traveling. Above loading / unloading station 31
Although the transfer of the article W to the overhead traveling vehicle 1 has been described above, the transfer operation of the article W from the overhead traveling vehicle 1 to the loading / unloading station 31 is substantially the reverse of the above-described operation, and thus the description thereof will be omitted.

In the above embodiment, the conveyor was explained as a chain conveyor, but the present invention is not limited to the above embodiment so that the same effect can be obtained with a roller conveyor, and it is appropriate within the scope of the invention. It goes without saying that modifications can be made.

[0012]

As is apparent from the above description, according to the lift of the overhead traveling vehicle according to the present invention, since a simple structure does not require complicated control, an engaging grip portion such as a cardboard case is formed. It is also possible to convey articles that have not been processed.

[Brief description of drawings]

FIG. 1 is a front view of an overhead traveling vehicle equipped with an elevator according to the present invention.

FIG. 2 is a side view of FIG.

FIG. 3 is a plan view of a lifting table and a loading / unloading station.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 Overhead traveling vehicle 5 Elevating platform 22 Suspending belt 26 Horizontal elevating body 28 Article support 31 Loading / unloading station 36 Transport conveyor (chain conveyor) l Missing part W Article

Claims (1)

[Claims] 1. An elevating table for an overhead traveling vehicle for delivering and receiving articles to and from a conveyor that constitutes a loading / unloading station, the elevating table being supported by a lifting belt, and a horizontal elevating body. It comprises an article support vertically extending from a horizontal elevating body, and the article support is formed with a notch having a width that does not come into contact with the conveyor even when the article support moves up and down. Lifting platform for overhead traveling vehicles.