JP2009269698A - Cargo transfer device in automated warehouse - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a cargo transfer device in an automated warehouse, capable of power saving owing to a reduced weight of the cargo transfer device and of space saving in the automated warehouse. <P>SOLUTION: A cargo 4 includes a handle portion 4a at an end part on the side of a load-carrying platform 17; the cargo transfer device 13 includes a transfer member 19 having an engagement/disengagement portion 35 to be engaged with and disengaged from the handle portion 4a to transfer the cargo 4 between the load-carrying platform 17 and a cargo shelf 3 and a moving means 29 to slide the transfer member 19 in the loading direction of the cargo 4 on the load-carrying platform 17; the transfer member 19 is further provided with an engagement portion 30 to be engaged with the moving means 29, wherein, when the cargo 4 is transferred between the load-carrying platform 17 and the cargo shelf 3, a state of engagement of the engagement portion 30 with a part of the moving means 29 on the side of the cargo shelf 3 is released. <P>COPYRIGHT: (C)2010,JPO&amp;INPIT

Description

  The present invention relates to a load transfer device in an automatic warehouse in which a load is taken in and out using a stacker crane or the like at a target position of a plurality of load shelves.

  2. Description of the Related Art Conventionally, a load transfer device in an automatic warehouse of a stacker crane used in an automatic warehouse has a hook (engagement / disengagement part) as a handle (handle part) of a box when a box (load) is taken in and out of a load shelf. ) Is lifted from below, and the hook is moved by a chain (moving means) spanned between a pair of gears (rotating bodies) while the handle is held by the hook. There is one in which a box can be transferred from a cargo rack to a cargo bed by sliding it to the opposite end (see, for example, Patent Document 1).

Japanese Patent Laying-Open No. 2005-219834 (page 6, FIG. 3)

  However, in the load transfer device in the automatic warehouse described in Patent Document 1, the hook (engagement / disengagement portion) is a chain (moving) between a pair of gears (rotating bodies) provided at the front and rear ends of the upper base. In order to place the hook in a holding position where the hook (clamping part) of the box (load) can be held, and the hook is reduced in amount. Therefore, it is necessary to increase the arrangement range of the chain, and the chain must be arranged over the entire length of the movement range of the hook, and the weight of the load transfer device becomes heavy due to the weight of the chain. There is a problem that not only the power consumption required for the operation of the loading device is increased, but also the arrangement range of the chain is increased, and a large installation space is required for the load transfer device.

  The present invention has been made paying attention to such problems, and is an automatic warehouse that can save power by reducing the weight of a load transfer device and can also save space in an automatic warehouse. An object of the present invention is to provide a load transfer device.

In order to solve the above-mentioned problem, a load transfer device in an automatic warehouse according to claim 1 of the present invention,
A stacker crane mast that travels along the width direction of a plurality of stacks for storing loads is provided with a load bed that can be moved up and down, and between the load bed and the load rack for loading and unloading the load A load transfer device in an automatic warehouse for transferring the load,
The load includes a handle portion at an end on the loading platform side,
The load transfer device is:
A transfer member having an engagement / disengagement part that engages or disengages from the handle part in order to transfer the load between the cargo bed and the load shelf;
Moving means for slidingly moving the transfer member in the load transfer direction in the loading platform;
With
The transfer member further includes an engaging portion that is engaged with the moving means,
When the load is transferred between the loading platform and the loading shelf, the engagement state of a part of the loading portion on the loading shelf side in the engagement portion is released.
According to this feature, when the load is transferred between the loading platform and the load shelf using the engaging / disengaging portion of the transfer member, the load rack side portion of the engagement portion is released from the moving means, and the transfer is performed. Since the loading member can be pushed out to the load shelf side, the arrangement range of the moving means can be configured to be small by the amount that the transferring member protrudes. Not only can power consumption be reduced by reducing the power required for operation, but also the width of the stacker crane equipped with the load transfer device can be narrowed by reducing the arrangement range of the moving means. Can save space in an automated warehouse.

The load transfer apparatus in the automatic warehouse according to claim 2 of the present invention is the load transfer apparatus in the automatic warehouse according to claim 1,
In the engaging portion, a plurality of tooth portions engaged with the moving means are continuously provided in the load transfer direction, and when the load is transferred between the load bed and the load shelf, The engagement state of a part of the plurality of tooth portions with respect to the moving means is released.
According to this feature, when the transfer member slides in the load transfer direction, the engaging portion of the transfer member is engaged with the moving means by the plurality of tooth portions. It is possible to stably transfer the load between the loading platform and the loading shelf, and when the loading is transferred between the loading platform and the loading shelf, some of the teeth engage with the moving means. Even if the state is released, since the other tooth portions are engaged with the moving means, the engaged state between the engaging portion and the moving means can always be maintained.

The load transfer apparatus in the automatic warehouse according to claim 3 of the present invention is the load transfer apparatus in the automatic warehouse according to claim 1 or 2,
The moving means has an endless chain that is stretched between a pair of rotating bodies that are spaced apart from each other in the load transfer direction, and an engaging portion of the transfer member is engaged with the chain. When the load is transferred between the loading platform and the loading shelf, the rotating body is adapted to a part of the chain on the loading shelf side in the engagement portion. The engagement state is released.
According to this feature, when the load is transferred between the loading platform and the loading shelf, the chain is automatically detached from the engaging portion by the rotation of the rotating body, so that the simple configuration of the chain and the rotating body Thus, the transfer member can be smoothly projected to the load shelf side.

The load transfer apparatus in the automatic warehouse according to claim 4 of the present invention is the load transfer apparatus in the automatic warehouse according to claim 3,
A receiving member for holding the chain is provided between the pair of rotating bodies.
According to this feature, since the chain between the rotating bodies is held by the receiving member, it is possible to prevent the chain from being bent between the rotating bodies even when the chain is vibrated while the load transfer device is being driven. Therefore, the engagement state of the engagement portion of the transfer member with respect to the chain can be maintained.

The load transfer apparatus in the automatic warehouse according to claim 5 of the present invention is the load transfer apparatus in the automatic warehouse according to any one of claims 1 to 4,
The stacker crane is arranged between a pair of load shelves arranged opposite to each other, and in the transfer member, the engagement / disengagement portion has engagement / disengagement pieces at both ends in the load transfer direction. It has a U-shape, and the length of the engaging / disengaging part in the transfer direction is longer than the length of the engaging part in the transfer direction.
According to this feature, not only can the hook part be engaged and disengaged with a simple structure of an engaging / disengaging piece, but the engaging / disengaging part has a substantially U-shape having engaging / disengaging pieces at both ends. Thus, the load can be transferred from either of the pair of load shelves arranged opposite to each other by using the transfer member, and the length of the transfer direction of the engagement / disengagement portion is set to the transfer direction of the engagement portion. The arrangement range of the moving means can be reduced by an amount formed longer than the length of the moving means.

  BEST MODE FOR CARRYING OUT THE INVENTION The best mode for carrying out a load transfer device in an automatic warehouse according to the present invention will be described below based on examples.

  An embodiment of the present invention will be described with reference to the drawings. First, FIG. 1 is a side view showing a stacker crane and a cargo rack provided with a transfer device of the present invention, and FIG. 2 is a front view showing the stacker crane. FIG. 3 is a longitudinal side view showing the transfer device, FIG. 4 is an enlarged side view of the main part showing the engagement between the rack portion and the roller chain, and FIG. 5 is the transfer device in FIG. FIG. 6 is a plan view showing the transfer device, and FIG. 7 is a conceptual diagram showing a state where the transfer device has moved to the intended cargo rack. FIG. 9 is a conceptual diagram showing a state in which the transfer hook protrudes, FIG. 9 is a conceptual diagram showing a state in which the hook portion is engaged with the handle, and FIG. 10 shows a state in which the box is transferred to the slide plate. FIG. Hereinafter, the left side of the paper in FIGS. 1, 3, 4, and 6 to 9 is the front side (front side) of the load transfer device in the automatic warehouse, and the front side of the paper in FIGS. 2 and 5 is in the automatic warehouse. The front side (front side) of the load transfer device will be described, and the right side in FIG. 5 will be described as the right side of the transfer device 13.

  In recent years, safe deposit boxes and the like installed in stores such as banks have been automated, and various box transport devices for carrying out safe deposit boxes used by each user from unmanned automatic warehouses are available. It is used. Reference numeral 1 in FIG. 1 is a stacker crane for transporting a safe deposit box with an automated safe deposit box or the like.

  As shown in FIG. 1, a frame 2 assembled in a rectangular shape is arranged before and after the stacker crane 1. The frame 2 is provided with a plurality of stages of loading shelves 3. A box 4 as a load in this embodiment that is used as a safe is stored in the load shelf 3. The front and rear frames 2 are connected to each other by an upper frame 5 disposed at the upper portion, and a ceiling rail 6 extends in the left-right direction at the center of the upper frame 5, A floor rail 8 extending in the same direction as the ceiling rail 6 is extended.

  As shown in FIG. 2, the stacker crane 1 is provided with two masts 9 extending in the vertical direction between the ceiling rail 6 and the floor rail 8, and below the masts 9, 9, A carriage 10 that can run on the floor rail 8 is provided. By driving a running motor 11 on which the carriage 10 is provided, the stacker crane 1 is guided forward and backward by the ceiling rail 6 and the floor rail 8. It is possible to travel along the left-right width direction of the plurality of stages of shelves 3 arranged in the box.

  In addition, the left and right masts 9 of the stacker crane 1 are provided with a lifting unit 12 that can be moved up and down, and the lifting unit 12 is fixed to the left and right of the transfer device 13 of the present invention. The elevating unit 12 is connected to a chain 14 disposed along the mast 9, and by driving an elevating motor 15, the elevating unit 12 can be pulled up and down by the chain 14. . And while moving the stacker crane 1, by raising / lowering the raising / lowering part 12, the transfer apparatus 13 is carried out to the target loading shelf 3 among the multistage loading racks 3 arrange | positioned before and behind the stacker crane 1. Can be moved.

  As shown in FIGS. 3 and 5, the outer shape of the transfer device 13 has a housing 16 formed in a substantially U shape that is bent upward by bending the left and right sides of the plate body upward. The elevating unit 12 described above is fixed to the left and right side surfaces of the housing 16.

  Further, a pair of slide plates 17 and 17 serving as cargo beds in the present embodiment are provided in the front and rear direction on the left and right side surfaces in the housing 16, and between the slide plates 17 and 17 in the front and rear direction. An extended intermediate base 18 is disposed. Above the intermediate base 18, when the box 4 is transferred between the slide plates 17 and 17 and the cargo rack 3, the hands in the present embodiment are provided at both front and rear ends of the box 4. A transfer hook 19 is provided as a transfer member in the present embodiment that engages or disengages with the handle 4a as the hook.

  A guide 21 slidably guided on a rail 20 disposed at the upper end of the intermediate base 18 is fixed to a lower portion of the transfer hook 19. The guide 21 of the transfer hook 19 is fixed to the rail of the intermediate base 18. By moving on 20, the transfer hook 19 can be slid in the front-rear direction (load transfer direction).

  Further, a transfer motor 22 is provided on the left side surface of the intermediate base 18. The transfer motor 22 is connected to a sprocket 23 disposed on the right side surface of the intermediate base 18. The sprocket 23 is connected to the horizontal drive shaft of the transfer motor 22 and can be rotated in the vertical direction.

  A tension adjusting unit 24 is provided in front of and behind the sprocket 23 on the right side surface of the intermediate base 18. Gears 25 and 26 having long holes 24a and 24b that are long in the vertical direction are provided at the front portions of the front and rear tension adjusting portions 24, respectively. A horizontal axis is disposed in the long holes 24a and 24b of the gears 25 and 26, and the gears 25 and 26 are pivotally supported on the horizontal axis so that the gears 25 and 26 are rotatable in the vertical direction. The gears 25 and 26 are movable up and down.

  Furthermore, idlers 27 and 28 are rotatably provided at the front and rear portions of the left side surface of the intermediate base 18, respectively. These idlers 27 and 28 constitute a rotating body in the present embodiment, and are idler idlers 27 and 28 having no tooth portion on the circumference thereof. The two idlers 27 and 28 provided at the front and rear ends of the intermediate base 18, the two gears 25 and 26 provided at the tension adjusting unit 24, and the sprocket 23 have an endless shape as a chain in this embodiment. The roller chain 29 is stretched over.

  As shown in FIG. 4, the roller chain 29 is configured by alternately combining inner links 29a and outer links 29b and connecting them with pins 29c penetrating the rollers 29d. The roller chain 29 is driven to circulate between the idlers 27 and 28 when the sprocket 23 is driven by the transfer motor 22.

  Further, as shown in FIG. 3, in a state where the roller chain 29 is stretched over the gears 25 and 26, the idlers 27 and 28, and the sprocket 23, the gears 25 and 26 are moved up and down to be added to the roller chain 29. Tension can be adjusted. The above-described idlers 27 and 28, the transfer motor 22, the sprocket 23, and the roller chain 29 constitute moving means in this embodiment.

  As shown in FIGS. 5 and 6, on the right side of the guide 21 at the lower portion of the transfer hook 19, a rack portion 30 is provided as an engaging portion in the present embodiment. The transfer hook 19 is engaged with the roller chain 29 via the rack portion 30.

  When the sprocket 23 is rotated by driving the transfer motor 22, the transfer hook 19 connected to the roller chain 29 is slid in the front-rear direction via the rack portion 30 by the circulation drive of the roller chain 29. It is possible. Hereinafter, the driving direction of the transfer motor 22 when the transfer hook 19 is slid forward is referred to as normal rotation drive, and the drive direction of the transfer motor 22 when the transfer hook 19 is slid rearward is referred to as reverse rotation drive. explain.

  As shown in FIG. 4, a tooth portion 30 a is connected to the lower portion of the rack portion 30 in the front-rear direction (load transfer direction). These tooth portions 30a are inserted from above between the pins 29c and 29c adjacent to the front and rear of the roller chain 29, whereby the roller chain 29 and the rack portion 30 are engaged.

  Further, as shown in FIGS. 5 and 6, a metal plate 31 is fixed to the left side of the guide 21 at the lower part of the transfer hook 19. In order to detect the position of the plate 31, traveling sensors 32 and 33, which are magnetic sensors for detecting magnetic force, are arranged at the front and rear ends of the left side surface of the intermediate base 18.

  These travel sensors 32 and 33 are arranged to determine the front end portion and the rear end portion of the movement range of the transfer hook 19 in the front-rear direction. When a control circuit (not shown) drives the transfer motor 22 to move the transfer hook 19 forward or backward, the travel sensor 32 on the front end side or the travel sensor 33 on the rear end side detects the plate 31. The arrangement position of the transfer hook 19 can be grasped. For example, when the front end travel sensor 32 or the rear end travel sensor 33 detects the plate 31 and the control circuit (not shown) stops driving the transfer motor 22, the transfer hook 19 is moved. The loading hook 19 can be stopped at the position of the front end portion or the rear end portion of the moving range.

  As shown in FIG. 3, a receiving member 34 that holds the roller chain 29 is provided between the front and rear idlers 27, 28 of the intermediate base 18. The receiving member 34 is a substantially rod-like member that supports the roller chain 29 from below, and prevents the roller chain 29 from being bent between the idlers 27 and 28.

  As shown in FIG. 3, on the upper part of the transfer hook 19, a hook portion 35 is provided as an engagement / disengagement portion in this embodiment that can be engaged and disengaged with respect to the handle 4a of the box 4 from below. Yes. As shown in FIG. 4, the hook portion 35 has an engagement / disengagement piece 35a extending upward from the front end portion thereof, and an engagement / disengagement piece 35b extending upward from the rear end portion thereof. However, it is formed to have a substantially U-shape when viewed from the side.

  The front engagement / disengagement piece 35a can be engaged with the handle 4a on the rear side of the box 4 housed in the load shelf 3 on the front side of the transfer device 13, and the box 4 can be pulled out rearward. Further, the rear engagement / disengagement piece 35b can be engaged with the handle 4a on the front side of the box 4 housed in the load rack 3 on the rear side of the transfer device 13, and the box 4 can be pulled out to the front side. .

  As shown in FIG. 4, the length L2 from the front engaging / disengaging piece 35a to the rear engaging / disengaging piece 35b of the hook portion 35 is formed longer than the length L1 of the rack portion 30 in the front-rear direction. ing. Furthermore, the front-rear direction center portion of the hook portion 35 and the front-rear direction center portion of the rack portion 30 are at the same position, and the engagement / disengagement pieces 35a, 35b of the hook portion 35 are respectively located on the rack portion 30. It protrudes forward and backward from the front and rear ends.

  Further, as shown in FIGS. 3 and 5, vertical guides 37 a and 37 b are provided on the front side and the rear side of the intermediate base 18. The vertical guides 37a and 37b are provided with through holes 36 penetrating in the vertical direction. A vertical guide rod 38a inserted into the through hole 36 of the front vertical guide 37a is erected on the front portion of the bottom surface of the housing 16, and the rear side of the bottom surface of the housing 16 is on the rear side. A vertical guide bar 38b that is inserted into the through hole 36 of the vertical guide 37b is provided upright. The intermediate base 18 can slide up and down while being guided by the vertical guide bars 38a and 38b.

  As shown in FIGS. 3 and 6, a mounting plate 39 is disposed on the left side of the intermediate base 18 on the bottom surface of the housing 16, and an engagement / disengagement motor 40 is provided on the left side surface of the mounting plate 39. It has been. The engagement / disengagement motor 40 is connected to a sprocket 41 disposed on the right side surface of the mounting plate 39. The sprocket 41 is connected to the lateral drive shaft of the engagement / disengagement motor 40 and is rotatable in the vertical direction.

  Further, a synchronization gear 42 that has the same number of teeth as the sprocket 41 and meshes with the sprocket 41 is provided at the rear of the right side surface of the mounting plate 39. The intermediate base 18 is provided with a rack 43a on the front side of the sprocket 41 and the synchronization gear 42, and a rack 43b on the rear side, facing each other. The sprocket 41 is engaged with the rack 43a, and the synchronous gear 42 is engaged with the vertical direction 43b.

  By driving the engagement / disengagement motor 40, the sprocket 41 and the synchronous gear 42 rotate, and the intermediate base 18 provided with the racks 43a, 43b can be moved up and down along the vertical guide bars 38a, 38b. Yes. Hereinafter, the drive direction of the engagement / disengagement motor 40 when the intermediate base 18 is raised will be referred to as normal rotation drive, and the drive direction of the transfer motor 22 when the intermediate base 18 will be lowered will be assumed to be reverse rotation drive.

  As shown in FIG. 5, a metal plate 44 is fixed to the intermediate base 18. In order to detect the position of the plate 44, elevation sensors 45a and 45b for detecting the contact of the plate 44 are arranged above and below the plate 44.

  These elevating sensors 45a and 45b are arranged to determine the moving range of the elevating / lowering of the intermediate base 18. For example, a control circuit (not shown) drives the engagement / disengagement motor 40 to raise or lower the intermediate base 18. Then, the elevation sensors 45a and 45b detect the plate 44. When the control circuit (not shown) stops the driving of the engagement / disengagement motor 40 when either the upper or lower lift sensor 45a, 45b detects the plate 44, the intermediate base 18 is moved within the movement range. It can be stopped at the position of the upper end or the lower end.

  Next, the movement of the transfer device 13 when transferring the box 4 in the embodiment of the present invention will be described in detail with reference to FIGS. In addition, the transfer operation performed between the front load shelf 3 and the transfer device 13 will be described as an example.

  As shown in FIG. 7, the stacker crane 1 is moved and the elevators 12 and 12 arranged on the masts 9 and 9 are moved up and down to the loading rack 3 on which the target box 4 is placed. At this time, the transfer hook 19 is disposed between the front and rear idlers 27 and 28, and all the tooth portions 30 a of the rack portion 30 are engaged with the roller chain 29.

  When the transfer motor 22 is driven to rotate forward, the sprocket 23 rotates and the roller chain 29 is driven, so that the transfer hook 19 slides forward. At this time, the transfer hook 19 detects the plate 31 of the transfer hook 19 by the travel sensor 33, so that the front engaging / disengaging piece 35a is disposed below the handle 4a of the box 4 as shown in FIG. Stop at the position where

  Further, as shown in FIG. 8, in the rack portion 30, the tooth portion 30 a disposed on the front side of the center of the idler 27 is separated from the roller chain 29 by the rotation of the idler 27. That is, the rack part 30 is disengaged from the roller chain 29 on the front side of the center of the idler 27, and is engaged with the roller chain 29 on the rear side of the center of the idler 27. Therefore, the front engaging / disengaging piece 35a can protrude from the center of the idler 27 to the front side with a protruding length of the distance L3.

  Note that when the front side engaging / disengaging piece 35a is engaged with the handle 4a of the box 4 placed on the front side shelf 3, the side of the shelf 3 to be transferred in the rack portion 30, that is, the side. The engagement state with the roller chain 29 is released in order from the tooth portion 30a on the front side. Furthermore, when the rear engagement / disengagement piece 35b is engaged with the handle 4a of the box 4 placed on the rear load shelf 3, in the rack portion 30, on the load shelf 3 side to be transferred, That is, the engagement state with the roller chain 29 is released in order from the rear tooth portion 30a.

  As shown in FIG. 9, when the intermediate base 18 is raised by driving the engagement / removal motor 40 to rotate forward, the transfer hook 19 provided on the intermediate base 18 is also raised, and the engagement on the front side of the hook portion 35 is increased. The detached piece 35 a engages with the handle 4 a of the box 4. At this time, the lift sensor 45a defines the upper end of the moving range of the intermediate base 18 so that the front engaging / disengaging piece 35a stops rising at a height position where it completely engages with the handle 4a.

  Then, as shown in FIG. 10, by moving the transfer motor 22 in the reverse direction with the front engaging / disengaging piece 35a engaged with the handle 4a, the transfer hook 19 is slid back to the box. 4 is placed on the slide plates 17 and 17, and is transferred from the front loading rack 3 onto the transfer device 13. The reverse rotation of the transfer motor 22 at this time is performed so that the transfer hook 19 slides backwards over a predetermined movement distance. The reverse rotation of the transfer motor 22 is performed until at least the box 4 is completely placed on the slide plates 17 and 17.

  The box 4 on the slide plates 17, 17 is supported by the slide plates 17, 17 from both the left and right sides, and the transfer device 13 with the front engaging / disengaging piece 35 a engaged with the handle 4 a of the box 4. Therefore, the box 4 can be moved to the target position while being stabilized.

  Further, when the box 4 is transferred from the transfer device 13 to the front load shelf 3, as shown in FIG. 10, the box 4 is transferred from the state where it is placed on the slide plates 17 and 17. The transfer hook 19 is slid forward by driving the motor 22 to rotate forward. At this time, the box 4 can be pushed toward the front side by the front engagement / disengagement piece 35a, and the box 4 can be stored in the front load shelf 3.

  Then, as shown in FIG. 9, the intermediate base 18 is lowered by driving the engagement / disengagement motor 40 in the reverse direction while the engagement / disengagement piece 35 a on the front side is engaged with the handle 4 a. At this time, since the lift sensor 45b defines the lower end of the vertical range of movement of the intermediate base 18, the front engagement / disengagement piece 35a stops descending at a height where it completely separates from the handle 4a.

  As shown in FIG. 8, after the front engaging / disengaging piece 35a is completely detached from the handle 4a, the transfer motor 22 is reversely rotated so that the transfer hook 19 slides backward at a predetermined moving distance. Drive. Then, as shown in FIG. 7, the transfer hook 19 is disposed between the idlers 27 and 28.

  The box 4 placed on the slide plates 17 and 17 is engaged by engaging the engaging / disengaging piece 35a on the front side of the transfer hook 19 with the handle 4a on the rear side of the box 4 from the loading shelf 3 on the front side. When storing in the rear loading rack 3, the transfer hook 19 is lowered to disengage the engaging / disengaging piece 35 a on the front side of the transfer hook 19 from the handle 4 a on the rear side of the box 4. The hook 19 is moved to the front side and then lifted to engage the engagement / disengagement piece 35b on the rear side of the transfer hook 19 with the handle 4a on the front side of the box 4, and the transfer hook 19 is moved to the rear side as it is. To move the box 4 to the rear side, and the box 4 may be stored in the rear rack 3.

  As described above, according to the transfer device 13 as an embodiment of the present invention, the box 4 is transferred between the slide plates 17 and 17 and the loading rack 3 by using the hook portion 35 of the transfer hook 19. In doing so, the portion of the rack portion 30 on the side of the load shelf 3 is released from the roller chain 29, and the transfer hook 19 can be pushed out to the load shelf 3 side, so that only the amount that the transfer hook 19 protrudes, The arrangement range of the roller chain 29 can be reduced, and the roller chain 29 can be reduced in weight to reduce the power required for the operation of the transfer device 13 to save power. By narrowing the arrangement range, the passage width of the stacker crane 1 between the front and rear loading shelves 3 and 3 can be narrowed, and the space of the automatic warehouse can be saved.

  Further, when the transfer hook 19 slides in the front-rear direction (load transfer direction), the rack portion 30 of the transfer hook 19 is engaged with the roller chain 29 by the plurality of tooth portions 30a. The box 4 can be stably transferred between the slide plates 17, 17 and the cargo rack 3 using the transfer hook 19, and the box 4 can be moved between the slide plates 17, 17 and the cargo rack 3. When transferring, even if the engagement state of some of the tooth portions 30a with the roller chain 29 is released, the other tooth portions 30a are engaged with the roller chain 29. Therefore, the rack portion 30 and the roller chain 29 The engagement state with can always be maintained.

  Further, an endless roller chain 29 is stretched between a pair of idlers 27 and 28 that are spaced apart from each other in the front-rear direction, so that the box 4 is placed between the slide plates 17 and 17 and the load shelf 3. When the idler 27, 28 is moved, the roller chain 29 is naturally detached from the rack portion 30 by the rotation of the idlers 27, 28, so that the transfer hook 19 is loaded with a simple configuration of the roller chain 29 and the idlers 27, 28. It can be smoothly projected to the shelf 3 side.

  In addition, since a receiving member 34 for holding the roller chain 29 is provided between the idlers 27 and 28, the roller chain 29 between the idlers 27 and 28 is held by the receiving member 34. Even if the roller chain 29 is vibrated while the device 13 is being driven, it is possible to prevent the roller chain 29 from being bent between the idlers 27 and 28, and the transfer hook 19 engages the rack portion 30 with the roller chain 29. Can be maintained.

  Further, the stacker crane 1 is disposed between a pair of load shelves 3 and 3 disposed to face each other, and the hook portion 35 has a substantially U shape having engagement / disengagement pieces 35a and 35b at both ends in the front-rear direction. Since the length of the hook portion 35 in the front-rear direction is longer than the length of the rack portion 30 in the front-rear direction, the handle 4a can be engaged and disengaged with a simple structure of the engagement / disengagement pieces 35a, 35b. In addition, the hook portion 35 has a substantially U-shape having engagement / disengagement pieces 35a and 35b at both ends, so that it can be seen from either of the pair of loading shelves 3 and 3 that are opposed to each other. The arrangement range of the roller chain 29 can be transferred by using the transfer hook 19 and the length of the hook part 35 in the front-rear direction is longer than the length of the rack part 30 in the front-rear direction. Can be made smaller That.

  Although the embodiments of the present invention have been described with reference to the drawings, the specific configuration is not limited to these embodiments, and modifications and additions within the scope of the present invention are included in the present invention. It is.

  For example, in the above-described embodiment, the hook portion 35 is formed in a substantially U shape having engagement / disengagement pieces 35a and 35b extending upward from both ends in the front-rear direction in a side view, and the handle 4a of the box 4 is downward The engaging / disengaging pieces 35a, 35b may be engageable with the handle 4a from above, or the engaging / disengaging pieces 35a, 35b may be engageable with the handle 4a from the left-right direction (horizontal direction). Good.

  Moreover, in the said Example, the hook part 35 is formed in the substantially U shape which has the engagement / disconnection piece 35a, 35b extended toward the upper direction from the both ends of the front-back direction in the side view, and the handle 4a of the box 4 is downward The handle 4a of the box 4 is made of a metal that can be magnetized, and electromagnets are provided at both front and rear ends of the hook portion 35, so that the box 4 is placed between the transfer device 13 and the loading shelf 3. When the transfer is performed, the hook portion 35 is magnetically attached to the handle 4a of the box 4 by energizing the electromagnet, and the box 4 is transferred with the hook portion 35 and the handle 4a being magnetically attached. Also good.

  Further, in the embodiment, the tooth portion 30a engaged with the roller chain 29 is provided in the front-rear direction of the rack portion 30, and when the box 4 is transferred between the transfer device 13 and the load shelf 3, Although the engagement state of the tooth portion 30a on the load shelf 3 side with the roller chain 29 is partially released, the roller chain 29 is made of a metal that can be magnetized, and the magnets are arranged in the front-rear direction of the rack portion 30. By providing, when the box 4 is transferred between the transfer device 13 and the load shelf 3, the magnetized state of the roller chain 29 is partially released from the load shelf 3 side of the rack portion 30. Also good.

  Moreover, in the said Example, although the transfer apparatus 13 of this invention was applied to the stacker crane in a safe deposit box, this invention is not limited to this, The transfer which transfers loads other than a safe deposit box. You may apply to an apparatus.

It is a side view which shows the stacker crane provided with the transfer apparatus of this invention, and a load shelf. It is a front view which shows a stacker crane. It is a vertical side view which shows a transfer apparatus. It is a principal part enlarged side view which shows engagement of a rack part and a roller chain. It is AA sectional drawing which shows the transfer apparatus in FIG. It is a top view which shows a transfer apparatus. It is a conceptual diagram which shows the state which the transfer apparatus moved to the intended load shelf. It is a conceptual diagram which shows the state which the transfer hook protruded. It is a conceptual diagram which shows the state which the hook part engaged with the handle. It is a conceptual diagram which shows the state which transferred the box to the slide board.

Explanation of symbols

1 Stacker crane 3 Loading shelf 4 Box (load)
4a Handle (Handle)
9 Mast 13 Transfer device 16 Housing 17 Slide plate (loading platform)
18 Intermediate base 19 Transfer hook (transfer member)
22 Transfer motor (moving means)
23 Sprocket (moving means)
27, 28 idler (moving means, rotating body)
29 Roller chain (moving means, chain)
30 Rack part (engagement part)
30a Tooth part 34 Receiving member 35 Hook part (engagement / disengagement part)
35a, 35b Engaging / disconnecting pieces

Claims (5)

A stacker crane mast that travels along the width direction of a plurality of stacks for storing loads is provided with a load bed that can be moved up and down, and between the load bed and the load rack for loading and unloading the load A load transfer device in an automatic warehouse for transferring the load,
The load includes a handle portion at an end on the loading platform side,
The load transfer device is:
A transfer member having an engagement / disengagement part that engages or disengages from the handle part in order to transfer the load between the cargo bed and the load shelf;
Moving means for slidingly moving the transfer member in the load transfer direction in the loading platform;
With
The transfer member further includes an engaging portion that is engaged with the moving means,
When the load is transferred between the loading platform and the loading shelf, an engagement state with respect to the moving means of a part of the loading shelf side in the engagement portion is released. Load transfer equipment.   In the engaging portion, a plurality of tooth portions engaged with the moving means are continuously provided in the load transfer direction, and when the load is transferred between the load bed and the load shelf, 2. The load transfer device in an automatic warehouse according to claim 1, wherein an engagement state of a part of the plurality of tooth portions with respect to the moving means is released.   The moving means has an endless chain that is stretched between a pair of rotating bodies that are spaced apart from each other in the load transfer direction, and an engaging portion of the transfer member is engaged with the chain. When the load is transferred between the loading platform and the loading shelf, the rotating body is adapted to a part of the chain on the loading shelf side in the engagement portion. The load transfer device in an automatic warehouse according to claim 1 or 2, wherein the engaged state is released.   The load transfer device in an automatic warehouse according to claim 3, wherein a receiving member for holding the chain is provided between the pair of rotating bodies.   The stacker crane is disposed between a pair of load shelves disposed opposite to each other, and in the transfer member, the engagement / disengagement portion has engagement / disengagement pieces at both ends in the load transfer direction. 5. The device according to claim 1, wherein the length of the engagement / disengagement portion in the transfer direction is longer than the length of the engagement portion in the transfer direction. The load transfer equipment in the automatic warehouse described in 1.

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