JP2018184282A - Transfer system - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a transfer system which simultaneously transfers plural loads, and transfers a larger cargo than the plural cargoes.SOLUTION: A transfer system 100 of this invention comprises a plurality of transfer devices 110 arranged side by side in the right and left direction, and the transfer devices have a pair of engaging members 104 which is disposed side by side in the right and left direction that is perpendicular to the transfer direction within the horizontal plane. The transfer system 100 includes a control device for transferring a first cargo 211 having a predetermined right and left length that is a length in the right and left direction by means of the pair of engaging members 104 provided in the transfer device 110, and transferring a second cargo 212 which has a right and left length longer than that of the first cargo 211 by means of 2 outer engaging members 141 located outside in the adjacent transfer devices 110.SELECTED DRAWING: Figure 5

Description

  The present invention relates to a transfer system that can transfer a load to and from a load holding unit that holds the load.

  In an automatic warehouse comprising a storage shelf having a plurality of luggage holding portions arranged vertically and horizontally, and a stacker crane capable of transporting the luggage along the storage shelf, between the storage shelf and the stacker crane In some cases, a transfer device for transferring loads may be attached to the stacker crane. In some cases, a package is transferred between a station having a package holding unit for temporarily holding the package and an automatic guided vehicle provided with a transfer device.

  For example, as described in Patent Literature 1, there is a case where a transfer system including two transfer devices is attached to a lifting platform that moves up and down along a mast of a stacker crane.

JP-A-2006-155659

  However, in a conventional transfer system including a plurality of transfer devices, the size of a load that can be transferred is limited by the size of one transfer device, and a load larger than that cannot be transferred. Has a problem.

  The present invention has been made in view of the above problems, and provides a transfer system that includes a plurality of transfer devices, and that can transfer a large load larger than the size of the transfer device. It is aimed.

  In order to achieve the above object, a transfer system according to one of the inventions of the present application includes a transfer device provided with a pair of engaging members arranged side by side in a horizontal direction orthogonal to the transfer direction in a horizontal plane. A plurality of transfer systems arranged side by side in a direction, using a pair of engaging members provided in the transfer device to transfer a first load having a predetermined left and right length that is a length in the left and right direction; The transfer device is provided with a control device for transferring a second load having a longer left and right length than the first load using two engaging members located on the outside.

  According to this, it is possible to transfer the first luggage having a shorter left and right length than the left and right length of the transfer device, and it is possible to transfer a second luggage having a left and right length longer than the left and right length of the first luggage. it can. Accordingly, when the control device is switched, a plurality of types of left and right long packages including the first package and the second package can be transferred. It is also possible to transfer two first packages at the same time.

  Further, the pair of engaging members provided in the transfer device each have a first protrusion protruding inward, and the two engaging members positioned outside in the two transfer devices are the first You may have the 2nd processus | protrusion which protrudes inside at the front-end | tip rather than a processus | protrusion.

  According to this, even in the transfer device that integrally projects the inner engagement member and the outer engagement member, the control device determines the protrusion amount of the engagement member when transferring the second load. It is possible to cope with the transfer of two types of packages, the first package and the second package, by simply shortening the package.

  In addition, the protruding length of the second protrusion may be shorter than the protruding length of the first protrusion provided in the engagement member including the second protrusion.

  According to this, when the first protrusion is engaged with the front side of the first load, it is possible to avoid the second protrusion from interfering with the first load. It is possible to switch between two types of packages.

  Here, the “front side” means a side close to the transfer system when a load including the first load and the second load is held outside the transfer system. In the same case, the side far from the transfer system may be referred to as the “back side”.

  Moreover, you may further provide the raising / lowering apparatus which can raise / lower the engaging member located inside in the two said transfer apparatuses relatively upward or downward rather than the said engaging member located outside.

  According to this, since the inner engagement member can pass under or above the second load held in the transfer system, the second load can be transferred in any direction in the transport direction. It becomes possible.

  The transfer device further includes a mounting member having a width corresponding to the left and right length of the first load and having a groove extending in the transfer direction, and is located outside the two transfer devices. You may each provide the guide extended in the transfer direction above the said groove | channel near the inner side of two said engaging members.

  According to this, the first container and the second container can be transferred in a stable state, and the first container and the second container held in the transfer system are stabilized. Can be held.

  It should be noted that execution of a program corresponding to each process executed by the control device also corresponds to the implementation of the present invention. Of course, implementing the recording medium in which the program is recorded also corresponds to the implementation of the present invention.

  According to the present invention, it is possible to switch and transfer a first luggage and a second luggage having different left and right lengths in one transfer system.

FIG. 1 is a perspective view showing an automatic warehouse equipped with a transfer system. FIG. 2 is a perspective view showing the first luggage to be transferred. FIG. 3 is a perspective view showing a second load that is a transfer target. FIG. 4 is a perspective view showing a transfer apparatus on which the transfer system is mounted. FIG. 5 is a perspective view showing the transfer system together with the lifting platform. FIG. 6 is a plan view showing the transfer system together with the first load from above. FIG. 7 is a plan view showing the transfer system together with the second load from above. FIG. 8 is a side view showing the inner engagement member and the placement member arranged at the upper end position by the lifting device together with the first load. FIG. 9 is a side view showing the inner engagement member and the placement member arranged at the lower end position by the lifting device together with the second load. FIG. 10 is a block diagram showing the configuration of the transfer system. FIG. 11 is a plan view showing a state where the first load is transferred. FIG. 12 is a plan view showing a state where the second load is transferred. FIG. 13 is a perspective view showing another example of the second luggage.

  Next, an embodiment of a transfer system according to the present invention will be described with reference to the drawings. The following embodiment is merely an example of the transfer system according to the present invention. Accordingly, the scope of the present invention is defined by the wording of the claims with reference to the following embodiments, and is not limited to the following embodiments. Therefore, among the constituent elements in the following embodiments, constituent elements that are not described in the independent claims indicating the highest concept of the present invention are not necessarily required to achieve the object of the present invention. It will be described as constituting a preferred form.

  Also, the drawings are schematic diagrams in which emphasis, omission, and ratio adjustment are performed as appropriate to show the present invention, and may differ from actual shapes, positional relationships, and ratios.

(Embodiment)
FIG. 1 is a perspective view showing an automatic warehouse equipped with a transfer system.

  As shown in the figure, the automatic warehouse 200 automatically stores the luggage 201 including the first luggage 211, the second luggage 212, etc. carried from the outside, and automatically takes out the stored luggage 201. This is equipment that can be carried out, and includes a storage shelf 202, a transfer device 203, and a transfer system 100. In addition, although the storage shelf 202 is arrange | positioned at the both sides of the conveying apparatus 203, illustration of one side is abbreviate | omitted.

  FIG. 2 is a perspective view showing the first luggage to be transferred.

  In the case of the present embodiment, the first luggage 211 is a container that can accommodate a plurality of relatively small articles such as medicines, medical instruments, and daily necessities, and is orthogonal to the transfer direction (X-axis direction in the figure). First flanges 213 projecting in the left-right direction are provided on both end surfaces (front side and back side). The first flange 213 is a portion that engages with a protrusion (described later) of the engaging member 104 when being transferred by the transfer device 110.

  FIG. 3 is a perspective view showing a second load that is a transfer target.

  In the case of the present embodiment, the second luggage 212 is a container that can accommodate an article larger than the first luggage 211, and the left-right length that is the length in the left-right direction is the left-right length of the first luggage 211. It is more than twice. Similarly to the first luggage 211, the second luggage 212 is provided with second flanges 214 projecting in the left-right direction on both end surfaces (front side and back side) orthogonal to the transfer direction. Similar to the first flange 213, the second flange 214 is a portion that engages with a protrusion (described later) of the engagement member 104 when being transferred by the transfer device 110.

  The storage shelf 202 is a facility having storage units for storing the luggage 201 arranged in the vertical direction (Z-axis direction in the drawing) and the horizontal direction (Y-axis direction in the drawing). In the case of the present embodiment, the storage shelf 202 includes a plurality of rectangular plate-like shelf plates 221 that extend in the horizontal direction in the horizontal plane, and the luggage 201 is placed at a predetermined position on the shelf plate 221. Placed. Therefore, the storage unit that stores one piece of luggage 201 is an abstract concept that changes the position and size of the storage shelf 202 instead of a fixed shape.

  Note that the structure of the storage shelf 202 is not particularly limited, and there are a plurality of cantilevers, a loader 201 that is placed on two adjacent cantilevers, a loader 201 is suspended, and a loader 201 is suspended and stored. A structure can be adopted.

  FIG. 4 is a perspective view showing a transfer apparatus on which the transfer system is mounted.

  As shown in the figure, the transport device 203 transports a load 201 such as the first load 211 in the vertical direction (Z-axis direction in the figure) and the left-right direction (Y-axis direction in the figure) along the storage shelf 202. This is a so-called stacker crane. In the case of the present embodiment, the transfer device 203 includes a carriage 231, a mast 232, and a lifting platform 233, to which the transfer system 100 is attached.

  The carriage 231 travels along a horizontal guide member (not shown) such as a rail provided on at least one of the floor and the ceiling, and horizontally guides the mast 232 extending in the vertical direction (Z-axis direction in the figure). A device that moves along a member. In the case of the present embodiment, the carriage 231 has a drive source 230 and two masts 232 attached to both ends in the left-right direction (Y-axis direction in the figure). The driving source 230 provided in the carriage 231 also generates a driving force for raising and lowering the lifting platform 233 that moves up and down along the mast 232.

  The mast 232 is a long structural member for guiding the lifting platform 233 that moves up and down in the vertical direction, and extends in the vertical direction along the storage shelf 202. In the case of the present embodiment, two masts 232 are attached to the carriage 231 in a parallel state, and the lifting platform 233 is slidably held between the two masts 232 in a bridged state.

  The shape of the mast 232 is not particularly limited, and may be a hollow member such as a square pipe. Also, the structure of the mast 232 is optional, and a pulley (not shown) for guiding a part of a suspension member that is connected to the lifting platform 233 and transmits a driving force that moves up and down is inserted into a hollow portion of the mast 232. Or the like may be attached to the end of the mast 232. Further, the mast 232 may be an assembly of a plurality of structures to which a lifting rail or the like that engages with the lifting platform 233 and guides the lifting of the lifting platform 233 is attached.

  The lifting platform 233 is a structural member that is guided by the mast 232 and moves up and down in the vertical direction (Z-axis direction in the drawing). The lifting platform 233 is a member that holds the transfer system 100 and is attached to each of the masts 232 erected on both ends of the carriage 231 in the left-right direction (Y-axis direction in the drawing) so as to be lifted in a bridged state. The transfer system 100 can be moved up and down by moving up and down with respect to the mast 232.

  FIG. 5 is a perspective view showing the transfer system together with the lifting platform.

  As shown in the figure, the transfer system 100 is a system in which a plurality of transfer devices 110 are arranged side by side, and the operation of the transfer device 110 is controlled by a control device 106. In the case of the present embodiment, the transfer system 100 is arranged side by side in a horizontal direction (Y-axis direction in the drawing) orthogonal to the transfer direction (X-axis direction in the drawing) in a horizontal plane (XY plane in the drawing). Two transfer devices 110 are provided. In the case of the present embodiment, the two transfer devices 110 have the same function except that the arrangement relationship of the members is a mirror image relationship, and common portions are denoted by common reference numerals. In some cases, one explanation is omitted.

  FIG. 6 is a plan view showing the transfer system together with the first load from above.

  FIG. 7 is a plan view showing the transfer system together with the second load from above.

  As shown in the figure, the transfer device 110 includes a pair of engaging members 104 arranged in the left-right direction, an outer engaging member 141, an inner engaging member 142, and a mounting member 143. . In addition, although the transfer apparatus 110 is provided with the drive mechanism, drive source, etc. which drive the engaging member 104, these illustration is abbreviate | omitted.

  The engaging member 104 has advanced to a position where it engages with the load 201 in the transfer direction, and can move backward, and can move in the left-right direction to reduce the distance between the engaging members 104, It is a member that can be widened. A mechanism for reciprocating the engagement member 104 in the transfer direction and a mechanism for moving the engagement member 104 in the left-right direction are not particularly limited. For example, a mechanism for moving the engagement member 104 back and forth in the transfer direction is fixed to the mounting member 143. In addition, a mechanism that moves in and out by a linear guide that extends in the transfer direction, a mechanism that moves in and out by a telescopic structure, and the like can be exemplified.

  In the case of the present embodiment, the transfer device 110 includes rails 154 that guide the engaging member 104 in the transfer direction. Further, the transfer device 110 includes an opening / closing mechanism 112 (see FIG. 10) that narrows and widens the distance between the pair of engaging members 104 by moving the rail 154 in the left-right direction.

  In the case of the present embodiment, a first protrusion 151 that engages with the first luggage 211 or the second luggage 212, a second protrusion 152, and a third protrusion 153 are provided at the tip of the engaging member 104. Is provided.

  The first protrusion 151 is a portion that protrudes inward in the left-right direction from the engagement member 104 in the transfer device 110, and is a first flange 213 that protrudes in the left-right direction on the front side surface portion of the first luggage 211. This is a part for engaging the back side surface and pulling the first luggage 211 from the storage shelf 202 or the like to the transfer device 110.

  In the case of the present embodiment, the first protrusions 151 are provided at both ends of each engaging member 104. Thereby, the load 201 can be transferred between the storage shelf 202 arranged on either side of the transfer direction.

  The third protrusion 153 is a portion that protrudes in the same direction as the first protrusion 151 more centrally than the first protrusion 151 of the engaging member 104 in the transfer direction. The third protrusion 153 is a portion that engages with the front side surface of the first flange 213 of the first load 211 and pushes out the first load 211 from the transfer device 110. Similar to the first protrusion 151, the third protrusion 153 is provided at each end of each engagement member 104.

  The second protrusion 152 is a portion provided on the outer engagement member 141, which is the two engagement members 104 positioned on the outer side in the transfer device 110 arranged adjacent to each other in the left-right direction, and is more than the first protrusion 151. It is the part attached to the tip side. The second protrusions 152 protrude in the same direction as the first protrusions 151 and are provided at both ends of the outer engagement member 141, respectively. The second protrusion 152 is a portion for engaging the back side surface of the second flange 214 protruding in the left-right direction on the front side surface portion of the second luggage 212 and pulling the second luggage 212 from the storage shelf 202 or the like.

  In this embodiment, the protruding length of the second protrusion 152 is shorter than the protruding length of the first protrusion 151 provided on the outer engagement member 141. As a result, when pulling the first luggage 211 from the storage shelf 202 using the first protrusion 151, the second protrusion 152 does not interfere with the side surface of the first luggage 211 and the first protrusion 151 is moved to the back of the first flange 213. It can be engaged with the side surface (see FIG. 11).

  FIG. 8 is a side view showing the inner engagement member and the placement member arranged at the upper end position by the lifting device together with the first load.

  FIG. 9 is a side view showing the inner engagement member and the placement member arranged at the lower end position by the lifting device together with the second load.

  The placement member 143 is a member that holds the luggage 201 drawn into the transfer device 110. In the case of the present embodiment, the placement member 143 is a plate-like member that holds the luggage 201 in a loaded state, and has a width corresponding to the left and right length of the first luggage 211 and extends in the transfer direction. A groove 144 is provided. By providing the groove 144 in the mounting member 143 in this manner, the posture of the first luggage 211 when the first luggage 211 is drawn from the storage shelf 202 and pushed out to the storage shelf 202 can be stabilized.

  Further, in the case of the present embodiment, a guide 145 of a ridge extending in the transfer direction (X-axis direction in the drawing) is provided on the outer edge of the mounting member 143 included in each adjacent transfer device 110. ing. The widths of the two guides 145 correspond to the left and right length of the second luggage 212, and the posture of the second luggage 212 is stabilized when the second luggage 212 is transferred.

  As described above, the second load 212 can be held on the mounting member 143 above the first load 211 by the groove 144 provided in the mounting member 143. That is, as shown in FIGS. 8 and 9, the bottom surface of the second luggage 212 can be disposed below the bottom surface of the first luggage 211 with respect to the engaging member 104. Therefore, when the inner engagement member 142 described later is passed under the second load 212, the amount of lowering of the inner engagement member 142 can be reduced.

  The lifting device 105 is a device that can lift and lower the inner engagement member 142 of the adjacent transfer device 110 with respect to the mounting member 143. In the case of the present embodiment, the inner engagement members 142 of the adjacent transfer devices 110 can be integrally moved up and down relative to the outer engagement member 141 as a unit.

  The lifting device 105 lifts and lowers the inner engagement member 142 away from the second load 212 when passing the inner engagement member 142 with respect to the second load 212 held by the two placement members 143. It is a device that realizes the operation.

  FIG. 10 is a block diagram showing the configuration of the transfer system.

  As shown in the figure, the control device 106 is connected to a plurality of transfer devices 110 included in the transfer system 100, and includes a retracting mechanism 111 and an opening / closing mechanism 112 of the engaging member 104 included in the transfer device 110. It is a device that controls and controls the lifting device 105. The control device 106 is, for example, at least one of a device that executes each process and a hardware circuit that executes each process when the microprocessor operates in accordance with instructions included in a computer program stored in the storage device. It is an apparatus provided with. Note that the control device 106 may control the operation of the transport device 203.

  In the case of the present embodiment, as shown in FIG. 11, the control device 106 moves the pair of engagement members 104 included in the transfer device 110 back and forth in the transfer direction, and the engagement member 104. By controlling the opening / closing mechanism 112 that opens and closes, it is possible to perform control to transfer the first luggage 211 to and from the storage shelf 202.

  Specifically, when the first luggage 211 is pulled into the transfer device 110 from the storage shelf 202, the control device 106 moves the transfer system 100 to a predetermined position, and then the control device 106 sets the first protrusion 151. Until the first flange 213 is exceeded, the retracting mechanism 111 is operated to project the pair of engaging members 104 to a position where the pair of engaging members 104 can be engaged with the first load 211 (see FIG. 11). Specifically, the first protrusion 151 arranged on the first luggage 211 side is projected until it exceeds the first flange 213 arranged on the transfer device 110 side. Next, the control device 106 operates the opening / closing mechanism 112 to narrow the interval between the pair of engaging members 104 until the first protrusion 151 comes to a position where it engages with the first flange 213. Next, the control device 106 operates the retracting mechanism 111 to retract the pair of engaging members 104 until the first load 211 is held by the placement member 143. Thus, the first luggage 211 is transferred from the storage shelf 202 to the transfer device 110.

  Further, when the first load 211 is pushed out from the transfer device 110 to the storage shelf 202, the control device 106 exceeds the third protrusion 153 disposed on the push-out side of the first flange 213 located on the opposite side to the push-out direction. The pair of engaging members 104 are moved by operating the retracting mechanism 111. Next, the control device 106 operates the opening / closing mechanism 112 to narrow the gap between the pair of engaging members 104 until the first flange 213 is located between the first protrusion 151 and the third protrusion 153. Next, the control device 106 operates the retracting mechanism 111 until the first luggage 211 is held on the storage shelf 202 and causes the pair of engaging members 104 to project. As described above, the first luggage 211 is transferred from the transfer device 110 to the storage shelf 202.

  Further, as shown in FIG. 12, the control device 106 can perform control to transfer the second load 212 using the outer engagement member 141 of the adjacent transfer device 110.

  Specifically, when the second package 212 is pulled into the transfer system 100 from the storage shelf 202, the control device 106 moves the transfer system 100 to a predetermined position and then the control device 106 moves the second package 212. The pair of engaging members 104 of the adjacent transfer device 110 are protruded by operating the retracting mechanism 111 until the second protrusion 152 arranged on the side exceeds the second flange 214 arranged on the transfer device 110 side. (See FIG. 12). In the case of the present embodiment, the retracting mechanism 111 is a mechanism that moves the pair of engaging members 104 at the same time. However, since the second protrusion 152 is disposed at the tip of the first protrusion 151, the inner engagement is performed. Even if the member 142 and the outer engagement member 141 protrude integrally, the first protrusion 151 of the inner engagement member 142 does not interfere with the front side surface of the second luggage 212.

  Next, the control device 106 operates the opening / closing mechanism 112 to narrow the interval between the outer engagement members 141 until the second protrusion 152 comes to a position where it engages with the second flange 214. In the case of the present embodiment, the opening / closing mechanism 112 is a mechanism that simultaneously opens and closes the pair of engaging members 104, and therefore the inner engaging member 142 that does not contribute to the transfer of the second luggage 212 also moves.

  Next, the control device 106 operates the retracting mechanism 111 until the second load 212 is held by the adjacent placement member 143 to retract the pair of engaging members 104 together. Thus, the second luggage 212 is transferred from the storage shelf 202 to the transfer device 110.

  Further, when the second load 212 is pushed out from the transfer device 110 to the storage shelf 202, the control device 106 controls the lifting device 105 so that the inner engagement member 142 is disposed at a position where it does not interfere with the second load 212. Next, the pair of engaging members 104 are moved by operating the withdrawing / retracting mechanism 111 until the first protrusion 151 disposed on the side for pushing out the first flange 213 located on the side opposite to the pushing direction is exceeded. Next, the control device 106 operates the opening / closing mechanism 112 to narrow the interval between the pair of engaging members 104 until the first protrusion 151 of the outer engaging member 141 comes to a position where it engages with the second flange 214. Next, the control device 106 operates the retracting mechanism 111 until the second luggage 212 is held on the storage shelf 202 to cause the pair of engaging members 104 to integrally project. Thus, the second luggage 212 is transferred from the transfer device 110 to the storage shelf 202.

  According to the automatic warehouse 200 equipped with the transfer system 100 described above, it is possible to switch and transfer the relatively small first luggage 211 and the second luggage 212 whose left and right length is twice or more that of the first luggage 211. it can. In addition, two first packages 211 can be transferred simultaneously.

  Accordingly, it is possible to diversify the types of luggage 201 to be stored and transferred while improving the efficiency of conveyance in the automatic warehouse 200.

  Specifically, since it is possible to deal with various sizes of containers as the luggage 201, the automatic warehouse 200 can flexibly deal with the number and size of articles that can be accommodated in the containers.

  In addition, this invention is not limited to the said embodiment. For example, another embodiment realized by arbitrarily combining the components described in this specification and excluding some of the components may be used as an embodiment of the present invention. In addition, the present invention includes modifications obtained by making various modifications conceivable by those skilled in the art without departing from the gist of the present invention, that is, the meaning described in the claims. It is.

  For example, in the embodiment, the transfer system 100 in which the protrusion is engaged with the flange provided in the luggage 201 is illustrated, but the transfer method is not limited to this, and a flat engagement member is used. It is also possible to use the one that is pressed against both sides of the luggage 201 and is transferred with the luggage 201 sandwiched therebetween.

  Further, the case where the protrusions are provided at both ends of each engaging member 104 has been described, but the protrusions may be provided only on one side.

  In addition, the protrusion length of the second protrusion 152 has been described as being shorter than the first protrusion 151. However, when the first luggage 211 has a recessed portion that avoids interference with the second protrusion 152, the protrusion length You can make it the same.

  In addition, the pair of engagement members 104 provided in the transfer device 110 has been described as being integrally retracted, but the pair of engagements such as moving only the outer engagement member 141 without moving the inner engagement member 142. The member 104 may be operated separately.

  In addition, the second protrusion 152 disposed on the front end side of the first protrusion 151 has been described, but the second load 212 and the inner engagement member 142 may be moved by, for example, lowering the inner engagement member 142 by the lifting device 105. In order to prevent interference, the second load 212 may be transferred by the first protrusion 151 without providing the second protrusion 152.

  Furthermore, as shown in FIG. 13, when transferring the second load 212 having a groove-shaped or recessed interference-avoiding space 220 that avoids the inner engagement member 142 at the lower portion, the inner engagement member 142 is The second luggage 212 may be transferred by the first protrusion 151 without being lifted or lowered.

  Further, the transfer system 100 may include three or more transfer devices 110. Further, in this case, not only the second load 212 is transferred using the adjacent transfer device 110 but also the transfer device 110 that is not adjacent, that is, the transfer device sandwiching one or more transfer devices 110. 110 may be used to transfer the third load 201 having a width wider than that of the second load 212.

  The present invention can be used for a transport vehicle such as a stacker crane used in an automatic warehouse for automatically storing, managing, carrying in and out a lot of packages, a station for receiving packages from a transport vehicle, and the like.

100 Transfer System 104 Engagement Member 105 Elevating Device 106 Control Device 110 Transfer Device 111 Ejection Mechanism 112 Opening / Closing Mechanism 141 Outer Engagement Member 142 Inner Engagement Member 143 Placement Member 144 Groove 145 Guide 151 First Protrusion 152 Second Protrusion 153 Third protrusion 200 Automatic warehouse 201 Luggage 202 Storage shelf 203 Transport device 211 First luggage 212 Second luggage 213 First flange 214 Second flange 220 Interference avoidance space 221 Shelf plate 230 Drive source 231 Car 232 Mast 233 Lifting platform

Claims (5)

A transfer system comprising a plurality of transfer devices arranged in a horizontal direction in a horizontal plane and arranged in a horizontal direction perpendicular to the transfer direction.
Using the pair of engaging members provided in the transfer device, the first load having a predetermined left-right length that is the length in the left-right direction is transferred, and the two above-mentioned two located on the two transfer devices A transfer system comprising a control device for transferring a second load having a longer left and right length than the first load using an engagement member. The pair of engaging members provided in the transfer device each have a first protrusion protruding inward,
2. The transfer system according to claim 1, wherein the two engaging members positioned outside in the two transfer devices include a second protrusion protruding inward at a tip end of the first protrusion. The transfer system according to claim 2, wherein a protruding length of the second protrusion is shorter than a protruding length of the first protrusion provided in the engagement member including the second protrusion. 4. The lifting device according to claim 1, further comprising a lifting device capable of moving the engagement member positioned on the inner side of the two transfer devices upward or downward relative to the engagement member positioned on the outer side. The transfer system described in Crab. The transfer device further includes a mounting member having a groove having a width corresponding to the left and right length of the first load and extending in the transfer direction,
5. The transfer according to claim 1, further comprising guides extending in a transfer direction above the groove in the vicinity of the inside of the two engaging members positioned outside in the two transfer devices. System.

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