Abstract:
The invention relates to a storage shelf system ( 10 ) for storing storage goods, comprising at least one service opening ( 18 ) for introducing and for removing storage goods, at least one revolving storage shelf unit ( 20, 30 ) having a plurality of storage locations and at least one storage shelf unit ( 40 ) which has at least one shelving column having storage locations disposed one above the other. The invention further relates to a transfer device ( 60 ) for transporting the storage goods ( 12 ) from a storage location in the storage shelf unit ( 40 ) to a storage location in the revolving storage shelf unit ( 20, 30 ) and vice versa.

Description:
The invention relates to a storage shelf system for storing storage goods, comprising at least one service opening for depositing and removing storage goods. 
     BACKGROUND OF THE INVENTION 
     In principle, various types of storage shelf units are known. The suitable type of storage shelf unit is selected depending on the storage goods to be stored and the space available for accommodating the storage shelf units. A quick access to the storage goods without any great loss of time is supposed to be possible. Particularly in the case of high-rise storage units, the large dimensions of the storage shelf units can result in long travel times for storage and retrieval. 
     On the one hand, storage shelf units are known that follow the paternoster principle, which is also frequently referred to as the circulation principle. Moreover, storage shelf units are known which comprise two opposite shelving columns and a transport shaft situated between them, with a rack conveyor traveling up and down in the transport shaft and delivering the storage goods to the storage locations or removing them from the storage locations. These storage shelf units are often referred to as storage lift or vertical storage shelf unit. 
     Depending on the storage space requirements and the number of storage goods to be stored, several of such storage shelf units are set up, standing side-by-side, in order to form a storage system. Generally, every storage shelf unit has a service opening. 
     A storage system comprising three storage lifts is known from DE 203 05 773 U1, wherein the storage lifts each have a service opening and these service openings surround a work surface on at least three sides. Every storage lift comprises opposing shelving columns, a central transport shaft and a conveying unit that can be moved within this transport shaft. 
     However, it has proved disadvantageous that a lot of storage space is lost due to the arrangement of one service opening, respectively, in each of the storage lifts. Moreover, a lot of storage capacity is lost also due to a transport shaft with an associated rack conveyor being provided in each of the storage lifts. Furthermore, in the event that three deposited storage goods items are required, of which each storage goods item is located in a different storage shelf unit, the operator has to operate each storage shelf unit and remove the storage goods item individually from each service opening. Thus, the handling of several storage shelf units and an increased amount of time is required. 
     SUMMARY OF THE INVENTION 
     The invention is based on the object of proposing a storage shelf system with which acceptable access times for depositing and retrieving the storage goods, as comprehensive a utilization of space with a lot of storage capacity and, at the same time, ease of operation is obtained. 
     In order to achieve this object, a storage shelf system for storing storage goods is provided which comprises at least one service opening for depositing and removing storage goods, at least one revolving storage shelf unit with several storage locations, and at least one storage shelf unit which has at least one shelving column with storage locations disposed one above the other. Moreover, at least one transfer device is provided for transporting the storage goods from a storage location of the storage shelf unit to a storage location of the revolving storage shelf unit and vice versa. 
     Within the context of the present application, the “storage shelf unit” is preferably understood to be a shelving column which provides a plurality of storage locations situated one above the other. Each of these storage locations can accommodate, in particular, a storage goods carrier with the storage goods located thereon. Moreover, several shelving columns can be positioned side-by-side in order to form a shelving row. The storage shelf unit can also be referred to as storage lift or vertical storage shelf unit. 
     Where the present application refers to a storage goods carrier, this term can be replaced by or supplemented with the storage goods to be transported. Furthermore, the storage goods can relate to a single storage goods element or a combination of several storage goods elements. Preferably, the storage goods to be deposited and retrieved are transported and stored by means of storage goods carriers. 
     At first, the storage shelf system according to the invention is based on the idea of combining different types of storage shelf units in an overall system, so that there is a good utilization of space with short access times and an interconnection of the different storage shelf units and thus an exchange of storage goods between the storage shelf units is possible. This interconnection makes it possible, for example, that storage goods, which at first are stored in a storage location of the revolving storage shelf unit, can be deposited in a storage location of the storage shelf unit after processing. Moreover, storage goods can also be relocated within the overall system without being delivered to the service opening. For example, storage goods from the region of the revolving storage shelf unit can be relocated or re-sorted into the region of the storage shelf unit and vice versa. 
     The at least one transfer device is preferably also configured and adapted to transport or move the storage goods from a storage location of the storage shelf unit onto the transfer device and thence to a storage location of the revolving storage shelf unit or into the service opening. Furthermore, the transfer device is configured and adapted to transport or move the storage goods from a storage location of the revolving storage shelf unit onto the transfer device and thence to a storage location of the storage shelf unit or into the service opening. The reverse movements are also supposed to be carried out. 
     Protection is sought for advantageous embodiments of the storage shelf system according to the invention in the dependent claims. 
     In a preferred embodiment, a transport shaft, in which the transfer device can be moved in the vertical and/or horizontal direction, is provided between the at least one revolving storage shelf unit and the at least one storage shelf unit. Preferably, the storage shelf system is configured as a high-rise storage unit, with the transport shaft preferably being disposed in the vertical direction and/or preferably approximately centrally in the system. In this manner, it is advantageously possible to quickly deliver the storage goods from a storage location of the revolving storage shelf unit to the service opening of the storage shelf system and/or from a storage location of the storage shelf unit to the service opening by means of the transfer device, which can be moved within the transport shaft. Thus, an efficient storage shelf system can be provided with a high degree of utilization of the available space for storing the storage goods. 
     In a preferred embodiment, the transfer device comprises a vertical conveyor, preferably in the form of a platform, wherein the storage goods can be moved in the vertical direction by means of the vertical conveyor. Preferably, the vertical conveyor comprises a platform and a driving means, which moves the platform in the vertical direction. 
     Furthermore, the transfer device can comprise at least one horizontal conveyor, with which the storage goods can be moved in the horizontal direction. Furthermore, it can be provided that the horizontal conveyor is supported on the vertical conveyor. Preferably, the horizontal conveyor can be displaced in the horizontal direction relative to the vertical conveyor. In this way, a transport of the storage goods can take place in the vertical direction and, at the same time, in the horizontal direction. Where reference is made within the context of this application to a horizontal direction, this can mean a first horizontal direction or a second horizontal direction of the horizontal plane. 
     The transfer device, the horizontal conveyor and/or the vertical conveyor can be configured, for example, as a gripping unit and/or a pulling unit. 
     For example, in order to deliver several storage goods from different storage locations of the service opening or vice versa simultaneously or at least with an overlap in time, several transfer devices can also be provided in the transport shaft. Furthermore, an individual transfer device can also comprise several vertical conveyors and/or horizontal conveyors. 
     In another preferred embodiment, the transfer device, preferably the horizontal conveyor, comprises at least one transfer unit to convey the storage goods from a storage location of the revolving storage shelf unit onto the transfer device and from a storage location of the storage shelf unit onto the transfer device, and from the transfer device into the service opening. 
     Furthermore, the revolving storage shelf unit can comprise a driving means on which a carrying assembly for retaining a storage goods carrier is held by means of a carrying unit. 
     All of the aforementioned driving means preferably comprise at least one chain drive and/or gear drive. 
     In a preferred embodiment, the respective carrying assembly is firmly mounted on the associated carrying unit and serves for retaining or receiving a storage goods carrier. Moreover, the respective carrying assembly can be detachably mounted on the associated carrying unit and can serve for retaining the storage goods carrier. In this case, a plug-in connection can be used, for example. 
     Preferably, the shelving column comprises carrier supports that are situated one above the other and spaced from one another, which are disposed in pairs on opposing side walls of the shelving column in order to form a storage location for the storage goods and/or the storage goods carriers. 
     In order to form storage locations that are situated one above the other, the storage shelf unit preferably comprises pairs of carrier supports. These carrier supports can be attached to vertical side walls. 
     Advantageously, the carrier supports are provided on the side walls in a grid-like manner. By defining a certain grid dimension and storing this grid in a control unit of the transfer device, a storage location that is sufficient for a certain storage goods height can be allocated, particularly in connection with a height measuring device. Advantageously, the carrier supports are pressed into the side walls in a meandering fashion. In particular, the side walls are produced from steel sheet and can be welded to vertical shelving posts. In addition or alternatively, the carrier supports can comprise grooves into which the support webs of the storage goods carrier can be inserted and from which they can be extracted. Such support webs can be attached to the side walls of the storage goods carriers. 
     In a preferred embodiment, shelving posts are provided for retaining the side walls of the storage shelf system, for guiding the transfer device in the vertical direction, for supporting the storage shelf unit and/or for supporting the revolving storage shelf unit. 
     The shelving posts can be arranged in such a way in the region of the transport shaft that the transfer device, particularly the vertical conveyor, is guided on the shelving posts by means of wheels or rollers. For example, the shelving posts can be provided with guide rails in which the wheels or rollers are guided. Furthermore, it may be provided that a shelving post or several shelving posts are provided both for supporting at least one storage shelf unit or shelving column, as well as for forming the transport shaft with the guide and support for the transfer device. 
     Predefined storage shelf system units can be provided as modules for the storage shelf system, which, depending on the available space, are then optionally set up side-by-side in order to create a modular system. The modular units set up side-by-side can each function as an individual unit or can be interconnected amongst each other, particularly via the transfer device and/or the transport shaft. In this case, the following embodiments have proved to be particularly advantageous: 
     In a preferred embodiment, at least two storage shelf units, at least one revolving storage shelf unit and at least one transfer device are provided. In a first variant of this embodiment, preferably two storage shelf units, one revolving storage shelf unit and two transfer devices are included. In another variant, two storage shelf units, two revolving storage shelf units and one transfer device can be provided. 
     Preferably, the revolving storage shelf unit comprises at least one transfer region via which the storage goods can be fed from the revolving storage shelf unit to the transfer device and vice versa. 
     This transfer region can be formed in the upper returning region, in the lower returning region, and/or in a region between the upper and lower returning regions of the revolving storage shelf unit. 
     In other words, the revolving storage shelf unit and the transfer device can be configured and adapted in such a way that the transfer of the storage goods by means of the transfer device between the revolving storage shelf unit and the storage shelf unit takes place in the region of the upper and/or lower returning region of the revolving storage shelf unit. Furthermore, the revolving storage shelf unit and the transfer device can be configured and adapted in such a way that the transfer of the storage goods by means of the transfer device between the revolving storage shelf unit and the storage shelf unit takes place in a region between the upper and/or lower returning regions of the revolving storage shelf unit. 
     In a preferred further development, a buffer region can preferably be provided in which a transfer device and/or storage goods or a storage goods carrier can be stored temporarily. The storage goods or the storage goods carrier can then be delivered to the service opening or to a storage location later. The buffer region can preferably be disposed in the storage shelf unit, preferably above or underneath the service opening. Furthermore, if several transfer devices are used in the transport shaft, for example, one of the transfer devices can be parked in the buffer region. 
     The storage shelf system can comprise only one or also several service openings, which proves to be advantageous particularly if the waiting times and/or access times are to be reduced as far as possible. A height measuring device for detecting the height of the storage goods can be provided in the region of the at least one service opening. Such a height measuring device can determine the number of the height units necessary for storing the storage goods. 
    
    
     
       BRIEF DESCRIPTION OF THE DRAWING FIGURES 
       The invention is explained in more detail below with reference to the drawings. The Figures schematically show: 
         FIG. 1  a perspective view of the first embodiment of the storage shelf system according to the invention; 
         FIG. 2  a top view of the storage shelf system according to  FIG. 1 ; 
         FIG. 3  a side view of the storage shelf system according the arrow III to  FIG. 1 ; 
         FIG. 4  a cross section according to the line IV-IV in  FIG. 2 ; 
         FIG. 5  a cross section through the side walls of the storage shelf unit; 
         FIG. 6  a perspective view of the second embodiment of the storage shelf system according to the invention; 
         FIG. 7  a horizontal section through the second embodiment according to  FIG. 6 ; 
         FIG. 8  a horizontal section through a third embodiment of the storage shelf system according to the invention, and 
         FIG. 9  a perspective schematic representation of the transfer device used in  FIG. 8 . 
     
    
    
     DETAILED DESCRIPTION 
       FIG. 1  shows in a perspective view the schematic structure of a first embodiment of the storage shelf system  10  according to the invention for the storage of storage goods  12 . The storage shelf system  10  comprises two revolving storage shelf units  20  and two storage shelf units  40  and a service opening  18  for depositing and removing storage goods  12 . 
       FIG. 2  shows a top view of the storage shelf system  10  according to  FIG. 1 .  FIG. 3  further shows a side view from the outside onto the storage shelf system  10  in the region of the revolving storage shelf unit  20 , with the outer wall  14  being depicted in a partial section. A plurality of storage goods  12  is shown in the regions of the revolving storage shelf units  20  in a purely schematic manner in  FIGS. 1 to 3 . Preferably, the storage goods  12  to be deposited and retrieved are transported and stored by means of storage goods carriers. Therefore, where the description of the Figures refers to storage goods  12 , this term can be replaced by or supplemented with the respective storage goods carrier. Furthermore, the storage goods  12  can relate to a single storage goods element or a combination of several storage goods elements. Furthermore, the driving means and the carrying means for the revolving storage shelf units  20  are not shown in  FIG. 1  for better reproducibility. 
     The two storage shelf units  40  are respectively formed by a shelving column with storage locations disposed one above the other. Relative to the service opening  18 , one storage shelf unit  40  is disposed in the front region and one storage shelf unit  40  in the rear region of the storage shelf system  10 . In order to form the storage locations lying one above the other for the storage goods  12  in the region of the storage shelf units  40 , each of the storage shelf units  40  comprises pairs of carrier supports  44 . These carrier supports  44  are disposed on opposing side walls  42  of the storage shelf units  40 . 
     Several shelving posts  16  are provided in order to support the storage shelf units  40  and for attaching the side walls  42 . As is apparent from  FIG. 1 , further shelving posts  16  are provided also in the region of the revolving storage shelf units  20 , in order to support the revolving storage shelf units  20  and the storage shelf system  10  as a whole, and to attach a peripheral outer wall  14 . 
     As can be seen particularly from  FIG. 5 , the carrier supports  44  are provided on the side walls  42  of the storage shelf units  40  in a grid-like manner. The carrier supports  44  are preferably pressed into the side walls  42  in a meandering fashion. In particular, the side walls  42  are produced from steel sheet and can be welded to the vertical shelving posts  16 . 
     As can be seen from  FIGS. 1 and 2 , in particular, viewed in a first horizontal direction X, a transport shaft  50  is provided between the storage shelf units  40  which extends in the vertical direction Z. Furthermore, viewed in a second horizontal direction Y, this transport shaft  50  is provided between the two revolving storage shelf units  20  and thus, on the whole, approximately in the center of the storage shelf system  10 . 
     A transfer device  60  is provided in the transport shaft  50 , by means of which the storage goods  12  or the storage goods carrier can be transported from a storage shelf unit  40  to a revolving storage shelf unit  20  and vice versa. Furthermore, the transfer device  60  is configured to transport or move the storage goods  12  from the respective storage location of a storage shelf unit  40  or a revolving storage shelf unit  20  onto the transfer device  60  and thence into a different storage location within the storage shelf system  10  and/or into the region of the service opening  18 . Of course, all of the aforementioned movements are also possible in the reverse direction. The possible horizontal movements are marked with double arrows in  FIG. 2 . Furthermore, the storage goods  12  can be conveyed in the transport shaft  50  in the vertical direction Z by means of the transfer device  60 . 
     The transfer device  60  is apparent, in particular, from  FIGS. 2 and 4 , and comprises a vertical conveyor  70 , by means of which the storage goods can be moved in the vertical direction Z, and at least one horizontal conveyor, by means of which the storage goods can be moved in the first horizontal direction X and/or in the second horizontal direction Y. The vertical conveyor  70  is configured as a platform  74 . A chain drive  72  can preferably be provided as a driving means for vertical movement within the transport shaft  50 . 
     Preferably, several gripping units are provided as horizontal conveyors, which can move the storage goods  12  or the storage goods carrier in the direction of the first horizontal direction X and/or of the second horizontal direction Y, as is also made clear by the double arrows in  FIG. 2 . Storage goods  12  situated in the revolving storage shelf unit  20  can be pulled onto the transfer device  60  by means of these gripping units. From there, the storage goods  12  can be moved in the vertical direction Z in the transport shaft  50  by means of the vertical conveyor  70 , and then, for example, pushed into a free storage location of one of the storage shelf units  40 . Alternatively, the storage goods  12  can be conveyed from the transfer device  60  into the service opening  18  by means of the horizontal conveyor, particularly one or more gripping units, so that the operator is able to remove the storage goods  12 . Furthermore, the transfer device  60  with its horizontal conveyor and its vertical conveyor  70  is configured in such a way that storage goods  12  can be pulled out from a storage location of one of the storage shelf units  40  and onto the transfer device  60  and then into the service opening  18  or into a free storage location of the other or of the same storage shelf unit  40 . 
       FIG. 3  shows a side view of the revolving storage shelf unit  20  according to the arrow III in  FIG. 1 . In this case, the driving means for generating a revolving movement and several carrying means  26  for retaining the storage goods  12  or storage goods carriers are depicted schematically. The driving means comprise a chain drive  24  with an upper return pulley  25  and a lower return pulley  25 . The chain is driven in such a way that the storage goods  12  revolve in the vertical direction in accordance with the paternoster principle and are returned in the region of the upper return pulley  25  as well as in the region of the lower return pulley  25 . An upper returning region  21  is located in the region of the upper return pulley  25 , and a lower returning region  22  is located in the region of the lower return pulley  25 . A possible circulating direction is marked with arrows in  FIG. 3 . The circulation can also take place in the reverse direction. 
     Several carrying means  26  for retaining the storage goods carriers are provided on the chain drive  24 . Each carrying means  26  comprises a carrying unit  27  which comprises at least one, preferably several, in particular two or four carrying arms  29 , in order to be able to hold a carrying assembly  28 , the storage goods carrier and/or the storage goods  12 . At their respective ends, the carrying arms  29  are attached in an articulated manner to the chain and the carrying assembly  28 , so that the semi-circular returning movements in the upper returning region  21  and in the lower returning region  22  can take place. Furthermore, a guide rail can be provided for guiding the ends of the carrying arms  29  on the side of the storage goods (not shown). In the first embodiment of the storage shelf system  10 , it is provided that the transfer of the storage goods  12  between the revolving storage shelf unit  20  and the storage shelf unit  40  takes place in the upper returning region  21  or in the lower returning region  22  by means of the above-mentioned gripping units of the horizontal conveyor of the transfer device  60 . 
     In a first variant of the above-mentioned carrying means  26 , the respective carrying assembly  28  is firmly mounted on the associated carrying unit  27  and serves for retaining the storage goods carrier. Preferably, this carrying assembly  28  is permanently firmly attached to the carrying arms  28 . In a second variant, the respective carrying assembly  28  is detachably mounted on the associated carrying unit  27 , i.e. the carrying arms  29 . For example, the carrying assembly  28  can be detachably mounted by means of a plug-in connection. 
     Preferably, the shelving posts  16  disposed in  FIG. 1  in the corner regions of the transport shaft  50  comprise guide means in order to enable a vertical guidance of the transfer device  60 , particularly of the vertical conveyor  70 , in the vertical direction Z. For this purpose, it can be provided, in particular, that the vertical conveyor  70  is equipped with guide rollers guided in vertical guide rails along the shelving posts  16 . 
       FIG. 6  shows in a perspective view the schematic structure of a second embodiment of the storage shelf system  10  according to the invention for the storage of storage goods  12 . The storage shelf system  10  comprises a revolving storage shelf unit  30  and two storage shelf units  40  with one service opening  18  each for depositing and removing storage goods  12 . However, only a single service opening  18  can also be provided. In a schematic representation,  FIG. 7  shows a horizontal section through this second embodiment according to  FIG. 6 , with the horizontal section extending at the level of the service openings  18 . In the front region of the storage shelf system  10 , the two storage shelf units  40  are arranged side-by-side. With regard to their structure, these storage shelf units  40  correspond to the front storage shelf unit  40  of the first embodiment according to  FIG. 1 . Thus, these storage shelf units  40  comprise carrier supports  44  provided in pairs and respectively disposed on the side walls  42 , for forming storage locations situated one above the other. 
     A revolving storage shelf unit  30  which extends along the horizontal direction X is provided in the rear region of the storage shelf system  10 . In principle and with regard to its schematic structure, this revolving storage shelf unit  30  corresponds to the two revolving storage shelf units  20  of the first embodiment (see  FIGS. 1 to 3 ). Thus, reference may be made at first to the above explanations. In contrast to the first embodiment, two transfer devices  60  are provided in the second embodiment according to  FIGS. 6 ,  7 , which are each configured in the same way as the transfer device  60  explained above with regard to the first embodiment according to  FIG. 1 . The measures for guiding the two transfer devices  60  in the transport shaft  50  by means of guide rails attached to the shelving posts are configured and adapted accordingly. Another difference to first embodiment is that in the second embodiment, the storage goods carriers are removed by means of the transfer device(s)  60  from a storage location of the revolving storage shelf unit  30  and conveyed onto the transfer device  60 , not in the region of an upper or lower returning region, but in a central region between the upper and lower returning regions. This is apparent from the double arrows in the horizontal direction Y in  FIG. 7 . The removed storage goods  12  can then be moved by means of the transfer device  60  in the vertical direction Z in the transport shaft  50  and deposited in a storage location of the storage shelf unit  40  above or underneath the service opening  18 . From the transfer device  60 , the storage goods  12  can be pushed into the service opening  18 . 
     In a development of the second embodiment according to  FIGS. 6 ,  7 , it can be provided that the two transfer devices  60  are additionally configured in such a way that a transfer of the storage goods and/or of the storage goods carrier from the one transfer device  60  onto the other transfer device  60  and vice versa in the horizontal direction X is possible. 
       FIG. 8  shows a horizontal, schematic section through a third embodiment of the storage shelf system  10  according to the invention, with the horizontal section extending at the level of the service opening  18 . In the front region of the storage shelf system  10 , two storage shelf units  40  are arranged side-by-side, which each comprise a service opening  18 . However, only a single service opening  18  can also be provided. In contrast to the second embodiment according to  FIGS. 6 ,  7 , only one transfer device  60  is provided in the transport shaft  50  in the third embodiment, which is also shown schematically in a perspective view in  FIG. 9 . This transfer device  60  comprises as a vertical conveyor  70  a lifting platform which is preferably formed by two spaced-apart, parallel carrier beams  76  (also see  FIG. 9 ). The horizontal conveyor  80  is movably mounted on the vertical conveyor  70 , particularly on the two carrier beams  76 , is supported by it and can be moved relative to the vertical conveyor  70  in the first horizontal direction X. 
     This horizontal conveyor  80 , like the horizontal conveyor discussed above with respect to the first embodiment, furthermore comprises at least one gripping unit for moving the storage goods carriers from the transfer device  60  into a storage location of the storage shelf unit  40  or into a storage location of the revolving storage shelf unit  30  or into one of the service openings  18 , and in each case vice versa. In the process, one gripping unit or several gripping units, for example, can be used for this horizontal movement of the storage goods carriers into the storage location and out from the storage location in the first horizontal direction X and/or in the second horizontal direction Y. 
     Moreover, combinations of the individual revolving storage shelf units  20  or  30  with the storage shelf units  40  and the various transfer devices  60  are also possible. Furthermore, based on the embodiments discussed above, predefined storage shelf system units can be provided as modules, which, depending on the available space, are then optionally set up side-by-side in order to create a modular system. These modular units, which are set up side-by-side, can then function as individual units, for example with one service opening each, or can be interconnected amongst each other, particularly via one or more transfer devices  60  and/or one or more transport shafts  50 . For example, the embodiments shown in  FIGS. 7 and 8  can each form such a modular unit, so that several such modular units can then be arranged side-by-side, particularly along the horizontal direction X, in order to form a storage shelf system. In particular in the embodiment according to  FIG. 8 , a common transport shaft  50  can be provided in which only one transfer device  60  is used. 
     The above-described embodiments of the storage shelf system  10  are characterized, in particular, in that the loss of storage capacity is minimized by arranging a central, in particular centrally disposed, transport shaft  50  together with the transfer device  60 . Moreover, an interconnection of different types of storage shelf units is accomplished, so that it is no longer necessary to operate each individual shelf and remove the storage goods respectively placed in the service opening  18  individually. These leads to a reduction of the time required. On the whole, a good utilization of space with a lot of storage capacity and, at the same time, ease of operation is obtained, preferably with only a single operator. 
     
       
         
               
             
               
               
             
           
               
                   
               
               
                 List of Reference Symbols 
               
               
                   
               
             
             
               
                   
               
             
          
           
               
                 10 
                 Storage shelf system 
               
               
                 12 
                 Storage goods 
               
               
                 14 
                 Outer wall 
               
               
                 16 
                 Shelving post 
               
               
                 18 
                 Service opening 
               
               
                 20 
                 Revolving storage shelf unit 
               
               
                 21 
                 Returning region 
               
               
                 22 
                 Returning region 
               
               
                 24 
                 Chain drive 
               
               
                 25 
                 Return pulley 
               
               
                 26 
                 Carrying means 
               
               
                 27 
                 Carrying unit 
               
               
                 28 
                 Carrying assembly 
               
               
                 29 
                 Carrying arm 
               
               
                 30 
                 Revolving storage shelf unit 
               
               
                 40 
                 Storage shelf unit 
               
               
                 42 
                 Side wall 
               
               
                 44 
                 Carrier support 
               
               
                 50 
                 Transport shaft 
               
               
                 60 
                 Transfer device 
               
               
                 70 
                 Vertical conveyor 
               
               
                 72 
                 Chain drive 
               
               
                 74 
                 Platform 
               
               
                 76 
                 Carrier beam 
               
               
                 80 
                 Horizontal conveyor 
               
               
                 X 
                 First horizontal direction 
               
               
                 Y 
                 Second horizontal direction 
               
               
                 Z 
                 Vertical direction