JP2009091049A - Conveying device - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a conveying device capable of performing efficient conveying work with a simple constitution. <P>SOLUTION: This conveying device 1 is provided with a fixed conveying conveyor 6 installed on an installation surface 5 and a moving conveying conveyor 7 movably installed on the installation surface 5. During no work when an article W is not conveyed, the moving conveying conveyor 7 is mutually overlapped with the fixed conveying conveyor 6 in plane view. During a work when the article W is conveyed, the moving conveying conveyor 7 is projected from the fixed conveying conveyor 6, and the article W is transferred from the moving conveying conveyor 7 to the fixed conveying conveyor 6. The conveying device 1 is provided with a wheel guiding rail 70 for guiding wheels of the moving conveying conveyor 7. <P>COPYRIGHT: (C)2009,JPO&INPIT

Description

  The present invention relates to a transport apparatus including a fixed transport conveyor and a movable transport conveyor.

2. Description of the Related Art Conventionally, for example, as a transfer device used when unloading cargo from inside a container of a container car, for example, an extendable conveyor portion supported by vertical legs with wheels is provided, and a plurality of driving rollers are provided on the upper surface of the conveyor portion. Is known (see, for example, Patent Document 1).
JP 9-100011 A

  However, in the configuration in which the conveyor portion is expanded and contracted as in the above-described conventional conveying device, for example, there is a possibility that troublesome work and unloading work may not be performed efficiently for expanding and contracting the conveyor portion, and consideration is given to stable cargo transportation, etc. Then, the configuration may be complicated.

  The present invention has been made in view of these points, and an object of the present invention is to provide a transport apparatus that is simple in structure and capable of performing transport work efficiently.

  The transport apparatus according to claim 1 includes a fixed transport conveyor and a movable transport conveyor movable with respect to the fixed transport conveyor, and the movable transport conveyor is flat with the fixed transport conveyor during non-operation when the article is not transported. At the time of the work of overlapping each other and transporting the articles, the movable transport conveyor protrudes from the fixed transport conveyor, and the articles are transported by one of them and transferred to the other.

  The transport apparatus according to claim 2 is the transport apparatus according to claim 1, wherein the movable transport conveyor has a plurality of wheels at a lower end portion and includes a wheel guide rail for guiding the wheels.

  The conveying apparatus according to claim 3 is the conveying apparatus according to claim 1 or 2, wherein the movable conveying conveyor has a plurality of guide rollers, and the fixed conveying conveyor conveys a roller guide rail that guides the guide rollers. It has on both sides along.

  The conveying apparatus according to claim 4 is the conveying apparatus according to any one of claims 1 to 3, wherein the movable conveying conveyors are connected to each other so as to be rotatable around a horizontal connecting shaft. It is comprised by the some division | segmentation conveyor.

  The transfer device according to claim 5 is the transfer device according to any one of claims 1 to 4, wherein the movable transfer conveyor is provided on the conveyor main body, which is positioned so as to straddle the fixed transfer conveyor. And a non-drive type conveyance unit that conveys the article by its own weight.

  According to the first aspect of the present invention, the movable transport conveyor overlaps with the fixed transport conveyor in a plan view when the article is not transported, and the movable transport conveyor protrudes from the fixed transport conveyor when the article is transported. Since it is the structure which is conveyed by one side and transfers to the other, a structure is simple and can perform a conveyance operation | work efficiently.

  According to the invention which concerns on Claim 2, since the wheel of a mobile conveyance conveyor is guided by the wheel guide rail, a mobile conveyance conveyor can be moved smoothly.

  According to the invention which concerns on Claim 3, since a fixed conveyance conveyor has the roller guide rail which guides the guide roller of a movement conveyance conveyor on both sides along a conveyance direction, a movement conveyance conveyor can be moved smoothly.

  According to the invention which concerns on Claim 4, since a mobile conveyance conveyor is comprised in the some division | segmentation conveyor with which the adjacent things were mutually connected centering on the connection axis | shaft of a horizontal direction, it is comprised in the up-and-down level | step difference Etc. can be absorbed.

  According to the invention which concerns on Claim 5, a moving conveyance conveyor has the conveyor main-body part located so that a fixed conveyance conveyor may be straddled, and the non-drive-type conveyance part which is provided in a conveyor main-body part and conveys articles | goods with its own weight. Therefore, the configuration can be reliably simplified.

  An embodiment of the transfer apparatus of the present invention will be described with reference to FIGS.

  In the figure, reference numeral 1 denotes a conveying device, which is an unloading conveyor device used when unloading an article W, which is a cargo, from the container 3 of a container car 2, for example.

  As shown in FIG. 1 to FIG. 3, the transport device 1 includes a drive-type fixed transport conveyor 6 that is fixedly installed on a horizontal installation surface 5, and a fixed transport conveyor that is movably installed on the installation surface 5. 6, and a non-drive-type moving transfer conveyor 7 that is positioned so as to straddle the fixed transfer conveyor 6.

  The installation surface 5 is, for example, a floor surface in a building in a distribution center or the like.

  When the article W is not being conveyed, the entire moving conveyor 7 is positioned so as to cover the upper part of the fixed conveyor 6 and overlaps the fixed conveyor 6 in plan view (shown by a solid line in FIG. 1). State), and at the time of unloading work in which the articles W are transported by the two conveyors 6 and 7 connected to each other, the movable transport conveyor 7 projects from the end of the fixed transport conveyor 6 with a projecting amount corresponding to the work. 1, the article W in the container 3 is conveyed by one of the movable conveyors 7 and is transferred to the fixed conveyor 6 which is the other and sent out of the container 3 (in FIG. 1, two points). State indicated by a chain line).

  As shown in FIG. 6 and the like, the fixed conveyance conveyor 6 is a horizontal driving roller conveyor that conveys the article W in the horizontal conveyance direction by using a driving force output from a driving unit such as a motor. The fixed transport conveyor 6 has a pair of conveyor frames 11 which are formed in a longitudinal shape in the transport direction and are opposed to each other, and each conveyor frame 11 is supported by a plurality of legs 12 which are vertically long. A plurality of drive rollers 13 that rotate based on a driving force from a driving means such as a motor and transport the article W in the horizontal transport direction are rotatably disposed between the conveyor frames 11. A plurality of driving rollers 13 constitute one horizontal fixed conveyance surface 14 of the fixed conveyance conveyor 6.

  Further, the fixed transport conveyor 6 has a pair of roller guide rails 16 which are formed in a longitudinal shape in the transport direction and which are opposed to each other, on both sides along the transport direction. Each roller guide rail 16 is fixed to the upper outer surface of the leg 12 and is disposed along the conveyor frame 11 at a position near the lower portion of the conveyor frame 11. On the outer surface of each roller guide rail 16, a roller guide surface 17 is formed along the vertical surface.

  As shown in FIG. 5 and the like, the moving conveyance conveyor 7 is a downwardly inclined free roller conveyor that conveys the article W in the downwardly inclined conveyance direction by using the weight of the article W, for example. The movable conveyor 7 has a plurality of, for example, six divided parts that are adjacent to each other in the conveying direction and connected to each other so as to be rotatable in the vertical direction around a horizontal connecting shaft 20 orthogonal to the conveying direction. Consists of a conveyor 21. That is, for example, shaft support members 22 and 23 are attached to opposite ends of the divided conveyor 21 adjacent to each other in the transport direction, and the connecting shaft 20 is inserted into the shaft insertion holes 24 and 25 formed in the shaft support members 22 and 23. In addition, one of the adjacent divided conveyors 21 can be turned up and down around the connecting shaft 20 with respect to the other divided conveyor 21.

  The six division conveyors 21 are, for example, one head division conveyor 21a located at the conveyance start end of the moving conveyance conveyor 7, one tail division conveyor 21b located at the conveyance end of the conveyance conveyance conveyor 7, and movement conveyance The intermediate section of the conveyor 7 is composed of four intermediate divided conveyors 21c having the same structure and positioned between the leading divided conveyor 21a and the rear divided conveyor 21b.

  Each of the divided conveyors 21 constituting the movable conveyer 7 includes a carriage unit 26 that is a conveyor main body positioned so as to straddle the fixed conveyer 6, and the article W provided on the carriage unit 26 is lowered by its own weight. And a non-drive-type transport unit 27 that transports in an inclined transport direction.

  Here, the carriage part 26 of the head division conveyor 21a includes an inclined support frame 31 having a substantially rectangular outer shape in plan view, and four legs 32 in total on each of two sides supporting the support frame 31. A wheel 34 such as a caster is provided at the lower end of each leg 32 and rotates about a horizontal axis 33. The upper end of each leg 32 is connected to the four corners of the support frame 31. A shaft support member 23 is fixed to both sides of the end portion of the support frame 31 on the downstream side in the transport direction.

  The transport section 27 of the leading split conveyor 21a is formed in a longitudinal direction in the transport direction and is fixed on the support frame 31 and opposed to each other. The transport section 27 is rotatably disposed between the two conveyor frames 35. It has a plurality of free rollers 36 that are transported in its descending and sloping transport direction by its own weight. In addition, the conveyance start end part of the conveyance part 27 of the head division conveyor 21a protrudes from the edge part of a frame with a predetermined amount so that the space part 37 for an operator's ankle escape may be formed (refer FIG. 1).

  The carriage 26 of the intermediate conveyor 21c includes an inclined support frame 41 having a substantially rectangular outer shape in plan view, two legs 42 on each side supporting the support frame 41, and each leg. And a wheel 44 such as a caster which is provided at the lower end of 42 and rotates about a horizontal axis 43. The upper end of each leg 42 is connected to two corners on the downstream side of the support frame 41 in the transport direction. A shaft support member 22 is fixed to both sides of the end portion of the support frame 31 on the upstream side in the transport direction, and a shaft support member 23 is fixed to both sides of the end portion of the support frame 31 on the downstream side in the transport direction. In addition, a guide roller 46 such as a guide roller that rotates about a vertical axis 45 that is a vertical direction is attached to a facing surface that is an inner surface of each leg 42 via a support member 47. The guide roller 46 is guided by the roller guide surface 17 of the roller guide rail 16 of the fixed transport conveyor 6 and moves along the roller guide surface 17 while rotating.

  The conveyance section 27 of the intermediate divided conveyor 21c is formed in a longitudinal direction in the conveyance direction, and is fixed on the support frame 41 and opposed to each other. The conveyance section 27 is rotatably disposed between the two conveyor frames 48. It has a plurality of free rollers 49 that are transported in its downward weight in the downwardly inclined transport direction.

  Further, as shown in FIG. 4 and the like, the carriage section 26 of the rear division conveyor 21b includes an inclined support frame 51 having a substantially rectangular shape in plan view, and one on each side supporting the support frame 51. It has a total of two legs 52 and wheels 54 such as casters that are provided at the lower end of each leg 52 and rotate around a horizontal axis 53. The upper end of each leg 52 is connected to two corners on the downstream side of the support frame 51 in the transport direction. The shaft support members 22 are fixed to both sides of the upstream end of the support frame 51 in the transport direction. Further, a guide roller 56 such as a guide roller that rotates about a vertical axis 55 that is a vertical direction is attached to a facing surface that is an inner surface of each leg 52 via a support member 57. The guide roller 56 is guided by the roller guide surface 17 of the roller guide rail 16 of the fixed transport conveyor 6 and moves along the roller guide surface 17 while rotating. In addition, a projecting frame 59 projects from the end of the support frame 51 on the downstream side in the transport direction toward the downstream in the transport direction.

  The conveying section 27 of the rear divided conveyor 21b is formed in a longitudinal shape in the conveying direction, fixed on the support frame 51 and opposed to each other, and rotatably disposed between the two conveyor frames 61. It has a plurality of free rollers 62 that are transported in its descending and sloping transport direction by its own weight.

  Further, the transport section 27 of the rear dividing conveyor 21b has a downwardly inclined transfer chute 63 that is attached to the protruding frame 59 of the carriage section 26 and carries the article W onto the fixed transport surface 14 of the fixed transport conveyor 6. Yes. The transfer chute 63 has a plurality of free rollers 64 that are rotatably supported by a frame 65, and the transfer terminal portion, which is the lower end of the transfer chute 63, is moved from the chute 63 to the fixed transfer surface 14 by the article W. It is arranged near the upper position of the fixed conveyance surface 14 so as not to receive a large impact when changing. A plurality of free rollers 36, 49, 62, 64 constitute one moving conveyance surface 66 that is inclined downward on the moving conveyance conveyor 7.

  On the other hand, a pair of parallel wheel guide rails 70 for guiding the wheels 34, 44, 54 at the lower end of the mobile conveyor 7 are laid on the installation surface 5. It is installed on the installation surface 5. Each wheel guide rail 70 has a U-shaped cross section that opens upward, and includes a bottom plate portion 71 and side plate portions 72 provided upright on both sides of the bottom plate portion 71.

  Note that the length in the transport direction of the fixed transport conveyor 6 is longer than the length in the transport direction of the mobile transport conveyor 7, and the length in the transport direction of the mobile transport conveyor 7 and the length in the guide direction of the wheel guide rail 70 are approximately. The same.

  Next, the operation and the like of the transfer device 1 will be described.

  When the article W is not transported, the conveyors 6 and 7 are overlapped vertically so that the entire moving transport surface 66 of the mobile transport conveyor 7 is positioned above the fixed transport surface 14 of the fixed transport conveyor 6. In this state, the upstream end in the transport direction of the movable transport conveyor 7 and the upstream end in the transport direction of the fixed transport conveyor 6 are at substantially the same position.

  For example, when unloading the article W as cargo in the container 3 of the container car 2, the worker A pulls the mobile transport conveyor 7 manually to move the mobile transport conveyor 7 with respect to the fixed transport conveyor 6. Is moved along the wheel guide rail 70 toward the container vehicle 2 side by a desired amount, and the conveyance start end side of the movable conveyance surface 66 is introduced into the container 3.

  At this time, the plurality of wheels 34, 44, 54 of the mobile conveyor 7 are guided by the wheel guide rail 70, and the plurality of guide rollers 46, 56 of the mobile conveyor 7 are guided by the roller guide rail 16 of the fixed conveyor 6. Guided.

  Then, when the worker A puts the article W on the conveyance start end of the movable conveyance surface 66 of the movable conveyer 7 in the container 3, that is, on the leading division conveyor 21a, the article W is divided into the leading division conveyor 21a and the intermediate division conveyor. 21c and the rear division conveyor 21b are transferred to the fixed transfer surface 14 of the moving transfer conveyor 7, and then transferred to a predetermined position on the fixed transfer surface 14.

  When the worker A finishes unloading the predetermined number of articles W, the worker A again moves the movable conveyor 7 along the wheel guide rail 70 by a desired amount, and further moves the conveyance start end side of the movable conveyance surface 66 in the container 3. Introduce to the back side and continue unloading work.

  By repeating this, the amount of protrusion of the movable conveying conveyor 7 from the upstream end in the conveying direction of the fixed conveying conveyor 6 gradually increases, and when the unloading of all the articles W in the container 3 is completed, the worker A moves The conveyor 7 is moved along the wheel guide rail 70 to the original storage position, and the conveyors 6 and 7 are returned to the storage state where they overlap each other in plan view.

  As described above, according to the transport device 1, the moving transport conveyor 7 overlaps the fixed transport conveyor 6 in a plan view when the article W is not transported, and the mobile transport conveyor 7 is fixed to the fixed transport conveyor 6 when transporting the article W. Since the article W protrudes from the movable conveyor 7 and is transferred to the fixed conveyor 6, the configuration is simpler and more efficient than the conventional configuration in which the extendable and retractable conveyor portion is expanded and contracted. And space efficiency is good.

  Further, when the movable conveyor 7 moves relative to the fixed conveyor 6, the plurality of wheels 34, 44, 54 are guided by the wheel guide rail 70, and the plurality of guide rollers 46, 56 are the roller guide rails of the fixed conveyor 6. Since it is guided at 16, the moving conveyor 7 can be smoothly moved in a desired direction.

  In addition, since the mobile conveyor 7 is composed of a plurality of divided conveyors 21 that are adjacent to each other so as to be rotatable around a horizontal connecting shaft 20, they can absorb upper and lower steps, For example, the article W can be appropriately conveyed even if there is an upper and lower step between the installation surface 5 and the bottom surface in the container 3.

  In addition, the mobile conveyor 7 has a carriage 26 that is positioned so as to straddle the fixed conveyor 6 and a non-drive type conveyor 27 that is provided on the carriage 26 and conveys the article W by its own weight. Compared to a conventional configuration in which a possible conveyor portion is expanded or contracted, or a configuration in which a transport unit is driven, the configuration can be simplified and energy saving can be reliably achieved, and safety can be improved.

  In the above embodiment, the unloading conveyor device used when unloading the article W from the container 3 of the container car 2 has been described. However, when loading the article into the container 3 of the container car 2 It can also be applied to the loading conveyor device used.

  Further, the moving conveyor (upper conveyor) 7 is positioned above the fixed conveyor (lower conveyor) 6 and the conveyors 6 and 7 overlap each other in plan view. For example, the movable conveyor 7 May be positioned below the fixed conveying conveyor 6 so that the conveyors 6 and 7 overlap each other in plan view.

  Further, the legs 32, 42, and 52 of the moving and conveying conveyor 7 may be configured to be extendable and retractable so that the height position of the moving and conveying surface 66 can be adjusted.

  Further, in addition to the legs 42 of the intermediate division conveyor 21c and the legs 52 of the rear division conveyor 21b, the legs 32 of the leading division conveyor 21a may be provided with guide rollers guided by the roller guide rails 16, and the legs A configuration in which only one guide roller is provided in any one of 32, 42, and 52 may be used.

  Further, the mobile conveyor 7 may not have the wheels 34, 44, 54, and the lower end surface of the mobile conveyor 7 may slide on the wheel guide rail 70 along the wheel guide rail 70.

  The number of intermediate division conveyors 21c positioned between the leading division conveyor 21a and the rear division conveyor 21b is arbitrary, and is a desired number corresponding to the size of the container 3.

It is a side view of the conveying apparatus which concerns on one embodiment of this invention. It is a top view of a conveyance apparatus same as the above. It is sectional drawing of a conveyance apparatus same as the above. It is a side view of the tail division conveyor of a conveyance apparatus same as the above. It is a perspective view of the movement conveyance conveyor of a conveyance apparatus same as the above. It is a perspective view of the fixed conveyance conveyor of a conveyance apparatus same as the above.

Explanation of symbols

1 Conveying Device 6 Fixed Conveyor 7 Moving Conveyor
16 Roller guide rail
20 Connecting shaft
21 Split conveyor
26 Carriage part, which is the main part of the conveyor
27 Transport section
34, 44, 54 wheels
46, 56 Guide rollers
70 Wheel guide rail W Goods

Claims (5)

A fixed conveyor,
A movable conveyor that is movable relative to the fixed conveyor,
At the time of non-working that does not convey the article, the movable conveying conveyor overlaps the fixed conveying conveyor in plan view,
In the operation of transporting an article, the moving transport conveyor protrudes from the fixed transport conveyor, and the article is transported on either side and transferred to the other. The mobile conveyor has a plurality of wheels at the lower end,
The conveyance device according to claim 1, further comprising a wheel guide rail that guides the wheel. The moving conveyor has a plurality of guide rollers,
The transport apparatus according to claim 1, wherein the fixed transport conveyor has roller guide rails for guiding the guide rollers on both sides along the transport direction. The movable conveyor is composed of a plurality of divided conveyors in which adjacent ones are connected to each other so as to be rotatable around a horizontal connecting shaft. The conveying apparatus as described. Mobile conveyor is
A conveyor main body positioned so as to straddle the fixed conveyor,
The conveyance device according to any one of claims 1 to 4, further comprising: a non-drive type conveyance unit that is provided on the conveyor main body unit and conveys the article by its own weight.

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