JPH1159863A - Conveyer system - Google Patents

Abstract

PROBLEM TO BE SOLVED: To enable a forklift or the like to reciprocate safely and freely between adjacent regions partitioned by a conveyer in a plant, further with reconnection made possible in the conveyer. SOLUTION: In a conveyer system juxtaposing a right/left side conveying conveyer CR, CL separated from a fixed conveyer CF, a traverse conveyer 10 provided with a traversing wheel in order to traverse between the right/left side conveyers CR, CL is provided, a traverse reciprocation device reciprocating the traverse conveyer 10 between a position adjacent to the left side conveyer CL and a position adjacent to the right side conveyer CR is provided, an on/off getting conveyer 40, moved upward of the traverse conveyer 10 at rising up time with one end adjacent to the fixed conveyer CF the other end adjacent to the traverse conveyer 10 at lowering down time, is provided, and an on/off getting device is provided, which makes the on/off getting conveyer 40 get on/off between the upward of the traverse conveyer 10 and the fixed conveyer CF.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

TECHNICAL FIELD The present invention relates to a conveyor system. More specifically, the present invention relates to a conveyor system in which a conveyed item is conveyed to a desired place by a conveyor in a factory according to a conveying procedure according to a conveyor flow.

[0002]

2. Description of the Related Art A large number of conveyors are arranged vertically and horizontally in a factory in order to continuously transport conveyed goods such as raw materials, machine parts and luggage, thereby realizing a conveyor system in a mass production type industry. I have.

[0003]

However, in a factory having a conveyor system, the conveyor is provided near the floor in the factory. Therefore, the site in the factory is divided into several areas in plan view by the conveyor. For this reason, forklifts and the like move over the boundary line that separates adjacent areas, that is, over the conveyor,
There is a problem that it is not possible to move from one area to another area. In addition, installing the conveyor not near the floor but above the floor away from the floor so that a forklift can pass is not only expensive in installation cost, but also takes time and labor for maintenance. There is a problem that it is not realistic because the transported goods fall and are dangerous. Further, in the conveyor system, the objects to be transferred are not always sent to the same destination. That is, even if the transported objects are initially transported by the same conveyor, they are sent to different transport destinations. For this reason, a conveyor system capable of changing the connection of the conveyor is desired.

The present invention has been made in view of the above circumstances, and provides a conveyor system in which a forklift or the like can safely and freely reciprocate between adjacent areas partitioned by a conveyor in a factory, and the connection of the conveyor can be changed. With the goal.

[0005]

According to a first aspect of the present invention, there is provided a conveyor system in which a pair of fixed conveyors are provided apart from each other, wherein the first conveyor adjacent to one of the fixed conveyors and the first conveyor when ascending are provided. When moving down the conveyor, one end thereof is adjacent to the other fixed conveyor at the time of lowering, and the other end includes a second conveyor adjacent to the first conveyor. 3. The conveyor system of claim 2 wherein said second conveyor is raised to move above said first conveyor, and said second conveyor is lowered so that one end of said second conveyor is the other of said fixed conveyor. And a getting-on / off device that makes the other end adjacent to the first conveyor is provided. Claim 3
In a conveyor system in which a left conveyor is provided separately from a fixed conveyor, and a right conveyor is arranged in parallel with the left conveyor, the conveyor system moves between the left conveyor and the right conveyor. A first conveyor having a traversing wheel, and a position where the first conveyor is adjacent to the left-hand conveyor,
A traverse reciprocating device for reciprocating at a position adjacent to the right conveyor, and when moving up, moves above the first conveyor; when descending, one end is adjacent to the fixed conveyor, and the other end is connected to the first conveyor. It is characterized by comprising an adjacent second conveyor, and a getting-on / off device for getting on and off the second conveyor between above the first conveyor and the fixed conveyor. The conveyor system according to claim 4 is characterized in that a traversing wheel for traversing between the left conveyor and the right conveyor is attached to the second conveyor. 6. The conveyor system according to claim 5, wherein the elevating device is provided below the second conveyor, an elevating device for elevating and lowering the first conveyor, a horizontal storage rail attached to a side of the first conveyor. And a support wheel housed in the storage rail, and an advancing / retracting device for moving the support wheel forward and backward along the storage rail.

According to the conveyor system of the first aspect, when the second conveyor descends, the pair of distant fixed conveyors is connected by the first conveyor and the second conveyor. For this reason, the conveyed object can be bidirectionally conveyed between the pair of fixed conveyors. Also, when the second conveyor rises, the second conveyor moves above the first conveyor. Therefore, a passage is formed between one fixed conveyor and the first conveyor.

According to the conveyor system of the second aspect, when the second conveyor is lowered by the getting on / off device, the pair of distant fixed conveyors is connected by the first conveyor and the second conveyor. For this reason, it is possible to transport the transported object bidirectionally between the pair of fixed conveyors.
Further, when the second conveyor is raised by the getting on / off device, the second conveyor is moved above the first conveyor. Therefore, a passage is formed between one fixed conveyor and the first conveyor.

According to the conveyor system of the third aspect, when the second conveyor is lowered by the getting on / off device, the space between the fixed conveyor and the right conveying conveyor or the left conveying conveyor separated from each other becomes the first conveyor and the second conveyor. Connected by For this reason, it is possible to convey an object in both directions between the fixed conveyor and the right conveyor or the left conveyor. Further, when the second conveyor is raised by the getting on / off device, the second conveyor is moved above the first conveyor. For this reason, a passage is formed between the fixed conveyor and the right side conveyor or the left side conveyor. Moreover, since the first conveyor is provided with the traversing wheels, the first conveyor with the second conveyor being moved upward is reciprocated between the right-hand conveyor and the left-hand conveyor by the traverse reciprocating device. Can be done. When the second conveyor is lowered from above the first conveyor by the getting on / off device, the first conveyor and the second conveyor connect between the fixed conveyor and the right conveyor or the left conveyor that are separated from each other. Therefore, the connection of the conveyor can be changed.

According to the conveyor system of the present invention, the right and left reciprocating devices can keep the first conveyor and the second conveyor connected without moving the second conveyor above the first conveyor by the getting on / off device. It can reciprocate between the conveyor and the left conveyor. Therefore, the connection of the conveyor can be easily changed.

According to the conveyor system of claim 5,
The second conveyor is raised by the lifting device, and the support wheel of the second conveyor is raised to the height of the storage rail of the first conveyor. Then, the support wheel of the second conveyor is advanced by the advance / retreat device and can be stored in the storage rail of the first conveyor. Therefore, the second conveyor can be easily and safely moved above the first conveyor. Conversely, the support wheel of the second conveyor is retracted by the advance / retreat device,
Pull out from the storage rail of the first conveyor. And
The lifting device allows the second conveyor to be easily and safely lowered such that one end of the second conveyor is adjacent to the fixed conveyor and the other end is adjacent to the first conveyor.

[0011]

Next, embodiments of the present invention will be described with reference to the drawings. FIG. 1 is a schematic diagram of the conveyor system of the present embodiment. In the figure, reference symbol CF indicates a fixed conveyor. A pallet p is placed on the fixed conveyor CF, and a conveyed object T such as a stack of corrugated cardboard or a storage case or a storage bag in which products are stored is placed on the pallet p. And is sent by the fixed conveyor CF. This fixed conveyor CF
, A left conveyor CL is provided. Parallel to the left conveyor CL, the right conveyor CR
Is provided. The conveyor system of the present embodiment includes:
In the conveyor system arranged as described above, the traversing conveyor 10, the getting on / off conveyor 40, and the elevating device (not shown) are provided. The traversing conveyor 10 is claimed in claim 1
1 to 4, and the getting on / off conveyor 40 is a second conveyor according to claims 1 to 4. The transported object T is not particularly limited as long as it can be placed on the pallet p as well as the corrugated cardboard stack.

First, the traversing conveyor 10 will be described. FIG.
2 is a plan view of the traversing conveyor 10. FIG. As shown in FIG. 1, the traversing conveyor 10 includes a known conveyor 9A, and the traversing wheels 11 and the reciprocating device 3 are attached to the conveyor 9A.
0 and a pair of left and right storage rails 51, 51 are attached.

The known conveyor 9A will be briefly described. Reference numeral 1 indicates a conveyor frame. The plurality of conveyor frames 1 (four in the figure) are connected by a pair of front and rear beams 6,6. A shaft 2 is rotatably supported at the front end of each of the plurality of conveyor frames 1. A plurality of sprockets 3 are attached to the shaft 2 at positions corresponding to the conveyor frame 1 so as to be rotatable in a vertical plane. At the rear end of the conveyor frame 1, sprockets 4 are rotatably mounted at positions corresponding to the conveyor frame 1, respectively. A chain 5 is wound around a pair of front and rear sprockets 3 and 4 of each conveyor frame 1. The upper portion of the chain 5 runs above the conveyor frame 1. A driving sprocket is mounted at an appropriate position on the shaft 2. Reference numeral 5M denotes a transport motor, and a sprocket is attached to a rotation shaft of the transport motor 5M. A chain is wound between the sprocket of the transport motor 5M and the driving sprocket of the shaft 2. Therefore, when the transport motor 5M is driven, the shaft 2 rotates, and the front and rear sprockets 3 and 4 in all the conveyor frames 1 rotate. Therefore, all the chains 5 can travel in the front and rear directions above the conveyor frame 1. Therefore, the article T to be transported can be placed on the chain 5 and the article T can be transported in both directions.

FIG. 3 is a view taken along line III-III in FIG.
As shown in FIGS. 2-3, in each of the pair of front and rear beams 6, 6, a pair of left and right traversing wheels 11, 1
1 are all attached rotatably in the left-right direction in the vertical plane. A shaft 12 is connected between a pair of front and rear traversing wheels 11 on either the left or right (lower in FIG. 2). A sprocket 13 is attached to an appropriate position of the shaft 12. Reference numeral 11M indicates a traversing motor. A sprocket is attached to the rotation shaft of the traversing motor 11M, and a chain is wound between the sprocket and the sprocket 13. Therefore, when the traversing motor 11M is driven, the traversing wheels 11, 11 are rotated by the driving force. For this reason, the traversing conveyor 10 can be traversed in the left and right directions (in FIG. 2, the up and down directions).

Next, the reciprocating device 30 will be described. FIG. 4 is a view taken along the line IV-IV in FIG. As shown in FIGS.
A pair of upper and lower sprockets 31 and 32 are provided at a front portion of the horizontal conveyor 10 on a left and right center line so as to be rotatable in the front-rear direction in a vertical plane. At the rear of the traversing conveyor 10, a pair of upper and lower sprockets 33, 3
4 is provided so as to be rotatable in the front-rear direction in a vertical plane. At the center of the traversing conveyor 10, sprockets 35, 36, and 37 are provided rotatably in the front-rear direction in a vertical plane. The sprocket 36 among these sprockets 31 to 37 is attached to the rotating shaft of the forward / backward motor 38M. A chain 38 is wound around the sprockets 31 to 37. The chain 38 includes an on-off conveyor 40 described later.
The pins 49 are connected, but the details will be described later. As shown in the figure, it is preferable that the chain 38 be wound around the sprockets 35, 36, and 37 so as to increase the wrapping contact angle, because the driving force of the forward / backward motor 38M is efficiently transmitted.

On the conveyor frames 1, 1 on both sides of the conveyor 9A, horizontal storage rails 51, 51 are supported.
2, which will be described later.

Next, the getting on / off conveyor 40 will be described. FIG. 5 is a plan view of the conveyor 40, and FIG.
0 is a side view, and FIG. 7 is a sectional view taken along line VII-VII in FIG. As shown in FIGS. 5 to 7, the getting on / off conveyor 40 includes a known conveyor 9B, and the traversing wheels 44 are attached to the conveyor 9B.

The conveyor 9B will be described briefly. Reference numeral 1 indicates a conveyor frame. The plurality of conveyor frames 1 (four in the figure) are connected by three beams 6, 6, 6 at intervals in the front-rear direction. A shaft 2 is rotatably supported at the rear end of each of the plurality of conveyor frames 1. A plurality of sprockets 3 are attached to the shaft 2 at positions corresponding to the conveyor frame 1 so as to be rotatable in a vertical plane. At the front end of the conveyor frame 1, sprockets 4 are rotatably mounted at positions corresponding to the conveyor frame 1, respectively. A chain 5 is wound around a pair of front and rear sprockets 3 and 4 of each conveyor frame 1. The upper portion of the chain 5 runs above the conveyor frame 1.
A driving sprocket is mounted at an appropriate position on the shaft 2. Reference numeral 5M denotes a transport motor, and a sprocket is attached to a rotation shaft of the transport motor 5M. A chain is wound between the sprocket of the transport motor 5M and the driving sprocket of the shaft 2. Therefore, when the transport motor 5M is driven, the shaft 2 rotates, and the front and rear sprockets 3 and 4 in all the conveyor frames 1 rotate. Therefore, all the chains 5 can travel in the front and rear directions above the conveyor frame 1. Therefore, it is possible to place the article T on the chain 5 and to convey the article T in both directions.

Next, the traversing wheels 4 of the elevator 40
4 will be described. FIG. 11 is a sectional view taken along line XI-XI of FIG. As shown in FIGS.
A pair of traversing wheels 44, 44
Is mounted so as to be rotatable left and right in a vertical plane. A sprocket 45 is attached to the rotation shaft of each traversing wheel 44. Reference numeral 44M indicates a traversing motor. Two sprockets 43 are attached to the rotation shaft of the traversing motor 44M.
A chain 46 is wound between any one of the two sprockets 43 and one of the pair of sprockets 45. And the traversing motor 44M
A chain 46 is wound between the remaining sprocket 43 and the pair of remaining sprockets 45. Therefore, when the traversing motor 44M is driven, the traversing wheels 44, 44 can be driven. Therefore, the getting on / off conveyor 40 can be traversed right and left.

The foremost beam 6 of this getting on / off conveyor 40
, A pair of nose plates 47, 47 extending forward are attached at their base ends. This pair of nose plates 47,
A beam 48 is attached to the leading end of the bridge 47. A pin 49 is provided on the lower surface of the beam 48.
Is attached. The pin 49 is connected to a part of the reciprocating chain 38 of the reciprocating device 30. For this reason, the getting on / off conveyor 40 can be moved forward and backward by the forward / backward chain 38 of the forward / backward device 30, and the details will be described later.

The conveyor frames 1, 1 on both sides of the conveyor 9 are provided with three pairs of left and right arms 4 on the outside thereof at intervals along the longitudinal direction of the conveyor frame 1.
1, 41 are attached. A support wheel 42 is attached to the lower end of each arm 41 so as to be rotatable in the front-rear direction in a vertical plane.

Next, a description will be given of a lifting device of the elevator 40. The elevator of the elevator 40 includes a front elevator 50 provided at the rear of the traversing conveyor 10 and a rear elevator 6 attached to the rear of the elevator 40.
0.

First, the front lifting device 50 of the lifting device will be described. FIG. 8 is a schematic perspective view of the front lifting device 50, and FIG. 9 is a front view of the front lifting device 50. As shown in FIGS. 2, 8, and 9, as described above, the conveyor frames 1 and 1 on both sides of the traversing conveyor 10 have horizontal storage rails 5 respectively.
Reference numerals 1 and 51 are attached via a support 52. A pair of left and right front lifting devices 50, 50 are provided outside the rear ends of the pair of left and right storage rails 51, 51, respectively. In each front lifting device 50, a cylinder 55 is provided with its rod 55R facing downward.
A horizontal wheel mounting plate 56 is attached to the lower end of the vehicle. On the upper surface of the wheel mounting plate 56 of the cylinder 55, the support wheel 42 of the foremost arm 41 of the getting on / off conveyor 40 is mounted. Storage rail 5
A cut-out portion 51h is formed on the lower surface near the end of No. 1. The notched portion 51h is formed larger than the support wheel 42.

With this configuration, when the cylinder 55 of the front lifting device 50 is extended and contracted, the wheel mounting plate 5
The support wheel 42 mounted on 6 can be moved up and down. When the cylinder 55 is expanded and contracted, the front part of the getting-on / off conveyor 40 can be moved up and down. Therefore, as shown in FIG. 9, when the support wheel 42 is raised, the support wheel 42 can be lifted to the same height as the storage rail 51.

Next, the rear lifting device 60 of the lifting device will be described. FIG. 10 is a sectional view taken along line XX of FIG.
The rear lifting device 60 is shown, and the left side in the figure is in a shortened state,
The right side in the figure is the extended state. As shown in FIGS. 5, 6, and 10, at the rear portions of the conveyor frames 1 and 1 on both the left and right sides, outer cylinders 61T are attached with their openings facing downward via support plates (not shown). . The inner cylinder 61R is placed in the hollow portion of the outer cylinder 61T. Although not shown, a telescopic cylinder is interposed between the outer cylinder 61T and the inner cylinder 61R. A bearing 63 is attached to a lower portion of the inner cylinder 61R. A pair of front and rear wheels 62 are mounted on the bearing 63 so as to be rotatable in a vertical plane in the front-rear direction. Of course, each wheel 62 is in contact with the floor. Therefore, by expanding and contracting a cylinder (not shown),
Since the outer cylinder 61T can be moved up and down with respect to the inner cylinder 61R, the rear part of the getting-on / off conveyor 40 can be moved up and down.

Next, the operation and effect of the conveyor system of the present embodiment will be described. As shown in FIG. 1 again, the traversing conveyor 10 is placed adjacent to the left conveyor CL, and the getting on / off conveyor 40 is moved to a lowered position indicated by a broken line. Then, the space between the fixed conveyor CF and the left side conveyor CL that are separated from each other is set between the getting on / off conveyor 40 and the traversing conveyor 1.
Connected by 0. Therefore, the transported object T can be transported bidirectionally between the fixed conveyor CF and the left transport conveyor CL.

Next, the transport motor 5M of the traversing conveyor 10 and the transport motor 5M of the getting on / off conveyor 40 are stopped. Then, the rear elevating device 60 of the elevator 40
The cylinder (not shown) between the outer cylinder 61T and the inner cylinder 61R is extended, and the cylinder 55 of the front lifting device 50 of the elevator conveyor 40 is extended. Then, since the front and rear portions of the getting on / off conveyor 40 rise, the conveyor 40 rises while keeping the horizontal. Therefore, the support wheel 42 of the getting-on / off conveyor 40 passes through the notched portion 51h of the storage rail 51, and ascends to the height of the storage rail 51 as shown in FIG.

Next, as shown in FIGS. 2 and 4, when the forward / backward motor 38M of the forward / backward device 30 is driven, the sprocket 36 rotates. Therefore, the reciprocating chain 38
Runs clockwise in FIG. Therefore, the getting on / off conveyor 40 is pulled in the direction of the traversing conveyor 10 and moves forward. Then, as shown in FIGS. 9 and 10, the support wheel 42 of the getting-on / off conveyor 40 moves forward along the longitudinal direction of the storage rail 51 while remaining in the storage rail 51. As the getting on / off conveyor 40 moves forward, the support wheels 42
Enters the storage rail 51. As a result, the getting on / off conveyor 40 moves above the traversing conveyor 10. In this way, the getting on / off conveyor 40 can be easily moved above the traversing conveyor 10.

As described above, when the boarding / leaving conveyor 40 is moved above the traversing conveyor 10, the original place occupied by the traversing conveyor 10 becomes an effect that a forklift or the like can be freely reciprocated.

When closing the passage, the forward / backward motor 38M is reversed as shown in FIGS. Then
The reciprocating chain 38 runs counterclockwise in FIG. For this reason, the getting on / off conveyor 40 retreats. Boarding conveyor 40
The support wheels 42 of the storage rails 51 come out of the storage rails 51 one after another. Then, the advancing / retreating motor 38M is stopped at a position where the rear end of the getting on / off conveyor 40 is adjacent to the fixed conveyor CF. Next, the front lifting device 50 and the rear lifting device 60
With this, the conveyor 40 is lowered. Then, again, between the fixed conveyor CF and the left conveyor CL,
It is connected by the getting on / off conveyor 40 and the traversing conveyor 10.

Next, the change of the connection of the conveyor will be described.
There are a first connection switching method and a second connection switching method for changing the connection of the conveyor. First, the first connection changing method of changing the connection of the conveyor will be described. The traversing conveyor 10 is placed adjacent to the left conveyor CL, and the getting on / off conveyor 40 is moved to a lowered position indicated by a broken line. Then, the distant fixed conveyor CF and the left transport conveyor CL are connected by the getting on / off conveyor 40 and the traversing conveyor 10. Therefore, the transported object T can be transported bidirectionally between the fixed conveyor CF and the left transport conveyor CL.

The conveying motor 5M of the traversing conveyor 10
Then, the transport motor 5M of the getting on / off conveyor 40 is stopped. Then, the getting-on / off conveyor 40 is moved above the traversing conveyor 10 by the method described above.

Then, as shown in FIGS. 2 and 3, the traversing motor 11M of the traversing conveyor 10 is driven to rotate the traversing wheels 11. By the rotational drive of the traversing wheels 11, the traversing conveyor 10 traverses while the getting-on / off conveyor 40 is placed on the upper side. Traversing conveyor 10
Stops the traversing motor 11M at a position adjacent to one end of the right transport conveyor CR.

Next, as shown in FIGS. 2 and 4, the forward / backward motor 38M of the forward / backward device 30 is reversed. Then, the reciprocating chain 38 runs counterclockwise in FIG.
For this reason, the getting on / off conveyor 40 retreats. The support wheels 42 of the getting on / off conveyor 40 come out of the storage rails 51 one after another. Then, the advancing / retreating motor 38M is stopped at a position where one end of the getting on / off conveyor 40 is adjacent to the fixed conveyor CF. Next, the front lifting device 50 and the rear lifting device 60
With this, the conveyor 40 is lowered. Then, this time, the fixed conveyor CF and the right side conveyor CR are connected by the getting on / off conveyor 40 and the traversing conveyor 10. In other words, there is an effect that the connection of the conveyor can be easily changed. In addition, not only the connection of the conveyor from the left conveyor CL to the right conveyor CR, but also the connection of the conveyor from the right conveyor CR to the left conveyor CL can be easily performed.

Next, a second connection method for changing the connection of the conveyor will be described. Traversing conveyor 1 on left conveyor CL
When the conveyor 0 is moved to the lowered position indicated by the broken line with the 0s adjacent to each other, the fixed conveyor CF and the left conveyor CL that are separated from each other are connected by the elevator conveyor 40 and the traversing conveyor 10. Therefore, the transported object T can be transported bidirectionally between the fixed conveyor CF and the left transport conveyor CL.

The transport motor 5M of the traversing conveyor 10 and the transport motor 5M of the getting on / off conveyor 40 are stopped.
As shown in FIGS. 2 and 3, the traversing motor 11M of the traversing conveyor 10 is driven to rotationally drive the traversing wheels 11. Since the traversing conveyor 10 is provided with the traversing wheels 11 and the pedestrian conveyor 40 is provided with the traversing wheels 44, the rotation conveyor 11 drives the traversing conveyor 40 and the traversing conveyor 10 to traverse. . At a position where the traversing conveyor 10 is adjacent to one end of the right transport conveyor CR, the traversing motor 11M is stopped. As a result, the fixed conveyor CF and the right conveyor C
R, the getting on / off conveyor 40 and the traversing conveyor 10
Connected by In this way, an effect is obtained that the connection of the conveyor can be easily changed. In addition, not only the connection of the conveyor from the left conveyor CL to the right conveyor CR, but also the connection of the conveyor from the right conveyor CR to the left conveyor CL can be easily performed.

[0037]

According to the conveyor system of the first aspect,
A forklift or the like can safely and freely reciprocate between adjacent areas partitioned by the conveyor. According to the conveyor system of the second aspect, a forklift or the like can safely and freely reciprocate between adjacent areas partitioned by the conveyor. According to the conveyor system of the third aspect, a forklift or the like can safely and freely reciprocate between adjacent areas partitioned by the conveyor, and further, the connection of the conveyor can be changed. According to the conveyor system of the fourth aspect, the connection of the conveyor can be changed. According to the conveyor system of the fifth aspect, the second conveyor can be easily and safely moved above the first conveyor.
The conveyor can be easily and safely lowered with one end adjacent to the fixed conveyor and the other end adjacent to the first conveyor.

[Brief description of the drawings]

FIG. 1 is a schematic diagram of a conveyor system according to an embodiment.

FIG. 2 is a plan view of the traversing conveyor 10. FIG.

FIG. 3 is a view taken along line III-III in FIG. 2;

FIG. 4 is a view taken in the direction of arrows IV-IV in FIG. 2;

FIG. 5 is a plan view of the getting on / off conveyor 40.

6 is a side view of the getting on / off conveyor 40. FIG.

FIG. 7 is a sectional view taken along line VII-VII of FIG. 5;

8 is a schematic perspective view of the getting on / off device 50. FIG.

9 is a front view of the getting on / off device 50. FIG.

FIG. 10 is a sectional view taken along line XX of FIG. 5;

FIG. 11 is a sectional view taken along line XI-XI in FIG. 5;

[Explanation of symbols]

 REFERENCE SIGNS LIST 10 traversing conveyor 11 traversing wheels 30 getting on and off device 38 reciprocating chain 40 getting on and off conveyor 44 traversing wheels 50 front lifting device 60 rear lifting device

Claims (5)

[Claims] In a conveyor system provided with a pair of fixed conveyors separated from each other, a first conveyor adjacent to one of the fixed conveyors moves above the first conveyor when ascending and one end when descending. A conveyor system comprising a second conveyor adjacent to the other fixed conveyor and the other end adjacent to the first conveyor. 2. The method according to claim 1, wherein the second conveyor is raised to move the first conveyor.
An elevator device for moving the conveyor above and lowering the second conveyor so that one end of the second conveyor is adjacent to the other fixed conveyor and the other end is adjacent to the first conveyor is provided. The conveyor system according to claim 1, wherein: 3. A conveyor system comprising a pair of right and left conveyors, wherein a pair of fixed conveyors are provided apart from each other, and one of the fixed conveyors is juxtaposed to each other. A first conveyor provided with a traversing wheel for traversing the first conveyor, and a traverse reciprocating device for reciprocating the first conveyor between a position adjacent to the left conveyor and a position adjacent to the right conveyor. When ascending, it moves above the first conveyor, and when descending, a second conveyor having one end adjacent to the fixed conveyor and the other end adjacent to the first conveyor, and the second conveyor being connected to the first conveyor. A conveyor system comprising: a boarding / alighting device for getting on and off between a portion above a conveyor and the fixed conveyor. 4. The conveyor system according to claim 3, wherein a traversing wheel for traversing between the left conveyor and the right conveyor is attached to the second conveyor. 5. The elevator device, wherein the elevator device is provided below the second conveyor, an elevator device for lifting and lowering the first conveyor, a horizontal storage rail attached to a side portion of the first conveyor, 5. The conveyor system according to claim 2, further comprising a rotatable support wheel stored in the storage rail, and an advance / retreat device for moving the support wheel forward and backward along the storage rail.