EP4204328A1 - Device for securing a shuttle, shuttle and shelf system - Google Patents
Device for securing a shuttle, shuttle and shelf systemInfo
- Publication number
- EP4204328A1 EP4204328A1 EP21772678.5A EP21772678A EP4204328A1 EP 4204328 A1 EP4204328 A1 EP 4204328A1 EP 21772678 A EP21772678 A EP 21772678A EP 4204328 A1 EP4204328 A1 EP 4204328A1
- Authority
- EP
- European Patent Office
- Prior art keywords
- shuttle
- retaining element
- retaining
- shelf
- area
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Withdrawn
Links
- 239000000969 carrier Substances 0.000 claims abstract description 19
- 230000000452 restraining effect Effects 0.000 description 19
- 238000012546 transfer Methods 0.000 description 14
- 230000032258 transport Effects 0.000 description 7
- 230000005484 gravity Effects 0.000 description 3
- 238000012423 maintenance Methods 0.000 description 3
- 230000004888 barrier function Effects 0.000 description 2
- 238000006073 displacement reaction Methods 0.000 description 2
- 238000009434 installation Methods 0.000 description 2
- 238000004519 manufacturing process Methods 0.000 description 2
- 230000036316 preload Effects 0.000 description 2
- 238000004873 anchoring Methods 0.000 description 1
- 239000000872 buffer Substances 0.000 description 1
- 230000015556 catabolic process Effects 0.000 description 1
- 238000010276 construction Methods 0.000 description 1
- 230000001419 dependent effect Effects 0.000 description 1
- 238000013461 design Methods 0.000 description 1
- 238000011161 development Methods 0.000 description 1
- 230000018109 developmental process Effects 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 230000005489 elastic deformation Effects 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 239000012530 fluid Substances 0.000 description 1
- 238000011990 functional testing Methods 0.000 description 1
- 238000007373 indentation Methods 0.000 description 1
- 230000008092 positive effect Effects 0.000 description 1
- 238000013024 troubleshooting Methods 0.000 description 1
Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
- B65G—TRANSPORT OR STORAGE DEVICES, e.g. CONVEYORS FOR LOADING OR TIPPING, SHOP CONVEYOR SYSTEMS OR PNEUMATIC TUBE CONVEYORS
- B65G1/00—Storing articles, individually or in orderly arrangement, in warehouses or magazines
- B65G1/02—Storage devices
- B65G1/04—Storage devices mechanical
- B65G1/0492—Storage devices mechanical with cars adapted to travel in storage aisles
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
- B65G—TRANSPORT OR STORAGE DEVICES, e.g. CONVEYORS FOR LOADING OR TIPPING, SHOP CONVEYOR SYSTEMS OR PNEUMATIC TUBE CONVEYORS
- B65G2207/00—Indexing codes relating to constructional details, configuration and additional features of a handling device, e.g. Conveyors
- B65G2207/28—Impact protection
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
- B65G—TRANSPORT OR STORAGE DEVICES, e.g. CONVEYORS FOR LOADING OR TIPPING, SHOP CONVEYOR SYSTEMS OR PNEUMATIC TUBE CONVEYORS
- B65G2207/00—Indexing codes relating to constructional details, configuration and additional features of a handling device, e.g. Conveyors
- B65G2207/40—Safety features of loads, equipment or persons
Definitions
- the invention relates to a device for securing a shuttle, a shuttle and a shelf system.
- the load carriers which are often in the form of boxes, are usually transported by a shuttle in a rack system, which is therefore also referred to as a shuttle warehouse.
- the shelving system comprises a plurality of shelves arranged next to one another, which in turn usually each comprise a plurality of levels. Aisles for at least one shuttle are arranged between each two shelves. This transports the load carrier to a shelf of the shelf assigned by the logistics system and stores it there or removes a load carrier from a shelf and transports it to a transfer area.
- This is usually arranged on one end of the rack and has elevators that transport the load carriers to the various levels of the rack.
- the transfer area can also be arranged at a different shelf position.
- the load carrier is transferred from the elevators to a transfer station of the shelf, which can be driven and/or non-driven. From the transfer station, the load carrier is taken over by the shuttle and then transported by it to the assigned shelf compartment. There the shuttle is positioned to the shelf and the load carrier is placed in the shelf.
- the shuttles reach speeds of up to 7 m/s.
- each level of a shuttle warehouse must be secured in such a way that a shuttle cannot leave the system unhindered in the event of a fault, such as a power failure. So far, this has been achieved using mechanical buffers at the ends of the Runways realized. These include a complex mechanical construction, such as switchable flaps and stops.
- the area of the rail required for this cannot be used in normal operation and takes up a significant amount of space in the shuttle system. This has the disadvantage that it cannot be used for shelves, i.e. as storage space.
- the object of the present invention is to provide a device, a shuttle and a shelving system which eliminates the disadvantages of the prior art described above.
- a device according to the invention for a racking system for load carriers to secure a shuttle before it leaves its rail at the end of an aisle of the racking system comprises a retaining element which, according to the invention, in turn comprises a flexible element.
- a restraining element is to be understood as an element which brakes the shuttle in the event of a backup in such a way that it remains in contact with the rail, for example with at least one axis.
- the retaining element is intended to ensure that the shuttle cannot fall off the shelf.
- a safety case occurs when the shuttle leaves the area of its travel rails permitted during operation and/or a control device loses control of the shuttle.
- Flexible elements such as ropes, chains or belts, have the advantage that, when subjected to tensile loads, they can absorb large forces and dissipate energy through elastic deformation.
- the force can be deflected in the direction of movement of the shuttle in a comparatively small space.
- further components of the device for absorbing this force and for dissipating the kinetic energy of the shuttle can be arranged in an installation space outside the rail of the shuttle.
- the unusable for storage The length of the shelf can be reduced or, to put it another way, the area of the shelf in which load carriers can be stored can be increased.
- the retaining element can be designed as a flexible element at least in the area of the aisle of the shuttle.
- the retaining element can be aligned in a plane perpendicular to the direction of movement of the shuttle. This can be, for example, an orientation from top to bottom, ie in the direction of gravity or parallel to the rail plane and perpendicular to the direction of movement of the shuttle. Of course, alignments at other angles to gravity and the plane of the rail are also conceivable.
- At least two retaining elements can come into contact with the shuttle in the event of a safety event.
- a second restraining element distributes the load on the shuttle and the risk of a single restraining element deviating to the side can be advantageously reduced.
- the second restraining element can be designed in such a way that it can brake the shuttle redundantly to the first restraining element, as a result of which safety can advantageously be increased.
- the retaining elements can cross each other. This can further reduce the risk of the retaining element, which is designed as a flexible element in the area of the aisles, deviating to the side.
- the retaining elements can be connected to one another. In this case, they can be connected, for example, at the crossing point of two retaining elements. In the case of several restraining elements, these can be designed as a net, which offers maximum protection against the shuttle falling down. Alternatively, a combination of at least two flexible elements of the restraining element arranged laterally on an aisle and designed as a rope and a rope or net stretched between the ropes is also conceivable.
- the retaining element can span at least one level of an aisle of the shelving system. Depending on the orientation of the restraining element, this can, for example, span the end of the aisle between two risers, similar to a railing. If the retaining elements are aligned from top to bottom, it makes sense to span several levels of the shelving system.
- the retaining element can span all levels of an aisle of the shelving system. This reduces the necessary number of anchoring points of the retaining element, which can have an advantageous effect on the complexity of the shelving system and thus on the manufacturing costs.
- the device can comprise an elastic element.
- the elastic element can be designed, for example, as a tension spring and can prestress the retaining element. Furthermore, the abrupt loading of the retaining element and the pliable element in the event of a belay can be alleviated by the elastic element.
- the flexible element can be lengthened over the elastic element, which means that it can simply be pushed to the side in the area of an aisle.
- the device can include a damper.
- the path covered by the damper can be increased using pulley kinematics compared to the deflection of the retaining element by the shuttle.
- the damper can be an elastomeric, fluid damper, or any other suitable type of damper.
- the device can include an active biasing unit.
- This can be designed as an actuator, for example.
- a light barrier or another suitable sensor can be used to ensure that the shuttle leaves the permitted area of the rail before it makes contact of the shuttle can be detected with the restraining element.
- the signal may be communicated to a controller that activates the active bias unit.
- the active preload unit can also be integrated in the damper and/or bridge the spring in the event of a safety event.
- the restraining element can be guided via guides in the area of the lanes.
- the guides may be in the form of lugs or hooks and may reduce movement perpendicular to the longitudinal extent of the retainer thereby ensuring that the retainer is in the correct position at all times.
- the guides can be used to move the retaining element in the direction of the shelves in the event of service, thereby freeing access to the aisle.
- the guide can be detachable or movable.
- the guides can be motor-driven, so that access to the aisle can be created via a control device.
- the guide can be arranged above and/or below the rail of the shuttle.
- the deflection of the retaining element in the direction of movement of the shuttle in the event of a backup can be reduced to the length between two guides.
- the direction of the energy is deflected at the guides, as a result of which the elastic component and/or the damper of the retaining element can be activated almost immediately after the retaining element has been deflected by the shuttle.
- the distance covered by the shuttle until it comes to a standstill can be advantageously reduced as a result.
- the retaining element can be designed to be circumferential.
- the retaining element can be guided over deflection rollers. These can in particular be designed in such a way that the retaining element is held securely and it is never possible for the retaining element to jump out of the deflection rollers.
- the pulleys can, for example, at the top end of the shelf and at the bottom of the shelf.
- the orientation of the deflection rollers can be such that the retaining element is deflected in a plane parallel to the end of the shelf.
- the elastic element and the damper can be arranged in an area next to the rail, ie not in an extension of the rail. This advantageously reduces the space required for the shelf in the direction of the aisle.
- the retaining element can be connected to an elevator of the shelving system.
- the restraining element can be connected to the elevator via an anchor, for example.
- One end of the restraining element is connected to a first anchorage and the other end of the restraining element, which is deflected, for example, via deflection rollers, is connected to a second anchorage with the elevator.
- the anchorages may be located on opposite sides of an elevator platform.
- a shuttle for a device as described can comprise at least one area for accommodating at least one retaining element.
- the area may comprise a simple indentation or recess for the retaining element.
- This can also be designed in such a way, for example, that the retaining element is clamped upon contact. In the event of an imminent crash of the shuttle, it can be held by the restraining element by clamping it.
- Such a mechanism can be designed, for example, similar to an emergency brake of a vertical elevator or a clamping of a gondola with the drive cable; the area can be designed in particular as a crumple zone.
- a crumple zone has the task of at least partially absorbing the energy of the impact, for example through deformation, and of minimizing or preventing damage to the load carriers and in particular to the components installed in the shuttle.
- the crumple zone can be designed in such a way that it can be easily replaced, so that the shuttle after a functional test can be used again. This eliminates the need to maintain additional shuttles in the event of a breakdown. At least the number of additional shuttles can be reduced to a minimum, which can have a positive effect on the manufacturing costs and operating costs of the shelving system.
- Figure 1 shows a schematic representation of a level of a shuttle warehouse in which the invention can be used
- FIG. 2 shows a perspective view from the front of a shuttle bearing
- FIG. 3 is a detailed view of the invention.
- FIG. 4 shows a further detailed view of the invention.
- FIG. 1 shows a top view of a section of a level of a storage system for small load carriers (load carriers) designed as a shuttle store 1, in which two shelves 3 of a shelf system 2 are shown.
- Small load carriers 12 usually have a base area of 400 ⁇ 600 millimeters and a maximum weight of 50 kg, with a maximum height of 600 mm.
- a shuttle 8 with a load handling device 10 transports a load carrier 12, which is designed as a box in the example shown, along the aisle 6.
- the load carriers 12 are transported in a transfer area on the front side of the shelves 3 by elevators 14, which transport the load carriers 12 to the individual levels of the Transport shelves 3, handed over to a transfer station 13, which can be designed driven or not driven.
- the load handling device 10 takes over the load carrier 12 from the transfer station 13 with the help of the shifting unit 20 and transports it to a shelf compartment 7 provided for storage in the shelves 3.
- the movement of the shuttle 8 in the aisle 6 is illustrated in the figure with a double arrow.
- the load carrier 12 is lifted from the load handling device 10 stored in one of the four possible positions in the shelf 7 in the example shown.
- the displacement unit 20 comprises a lifting device (not shown in the figure) for lifting the load carrier 12 and a horizontal drive designed as a telescopic drive 30 .
- the load handling device 10 including the lifting device is pushed into the shelf 7 by the telescopic drive 30 on support profiles 11 which are arranged on the risers 4 on each side of the shelf 7 .
- the load carrier 12 is raised by the lifting device in such a way that it hovers above the support profiles 11 at a distance of 1 mm to 25 mm.
- the load carrier 12 is lowered by the lifting device so that it comes to rest on the support profiles 11 .
- the support profiles 11 are designed in such a way that they are used both as a rail for the load-carrying means 10 and as a support for the load carrier 12 .
- the rail for the load handling device 10 and the support for the load carrier 12 can also be designed as two independent components.
- the device 50 with two retaining elements 51 is arranged at the end of the aisle 6 of the shelving system 2, which run perpendicular to the aisle 6 and parallel to the end of the shelving system in the plane of FIG. As will be explained in more detail in FIG. 2, these are fixed at anchor points (not shown in FIG. 1) and guided along the shelf system 2 over the individual levels via guides (also not shown in FIG. 1).
- a recess 54 for the retaining elements 51 is formed in the chassis 15 of the shuttle 8, which can safely accommodate them in the event of a backup, ie when the shuttle 8 leaves the area of the rails provided for operation.
- FIG. 2 shows a perspective view from the front of a shuttle bearing 1, in which different embodiments of the retaining element 51 are shown as examples.
- a first embodiment of the invention comprises two retaining elements 51 .1, which run parallel to one another on the front side of the shelving system 2 over several levels.
- the retaining element 51.1 comprises a flexible element designed as a rope 52, particularly in the area of the travel rail 9 and the shuttle 8.
- the retaining elements 51.1 are fixed to the anchor points 59.1 on the lower 58.1 and the middle cross brace 58.2 and are guided in the area of the aisle 6 with the shuttle 8, for example by guides 57.1, 57.2.
- each retaining element 51.1 runs through two guides 57.1, 57.2 in the area of the aisle.
- the guides 57.1, 57.2 can be arranged in such a way that an upper guide 57.2 of a lane 6 also corresponds to the lower guide 57.1 of the lane 6 above it.
- the guides 57.1, 57.2 can be designed as hooks or eyelets or the like.
- a variant of this embodiment of the retaining element 51 .1 is a single retaining element 51 .1 which is arranged in the middle between the shelves 3 in front of the aisle 6 . This variant is shown in broken lines in FIG. 2 and is also fastened to the anchor points 59.1 on the lower 58.1 and middle cross brace 58.2.
- a second embodiment of the retaining element 51.2 is also shown in dashed lines in Figure 2 and runs perpendicular to the first embodiment of the retaining element 51.1 and parallel to the front of the shelving system 3.
- the anchor points 59.2 are on the shelves 3, which are to the left and right of the aisle 6 are arranged fixed.
- the retaining element 51.2 which mainly consists of a flexible element designed as a belt 53, is arranged in the middle, or at the height of the center of gravity, of the shuttle 8 at the end of the shelving system 2 in front of the aisle 6. Due to the belt 53, the contact surface between the restraining element 51.2 and the shuttle 8 is larger than with one Rope. This reduces the risk of slipping off the shuttle 8, so that one retaining element 51.2 may be sufficient for certain applications.
- a third embodiment of the retaining element 51.3 is shown in the upper area of the shelf system 3 in FIG.
- the restraining element 51.3 comprises a net 56 made from several flexible elements, such as ropes 52. This is attached to anchor points 59.1 on the upper 58.3 and the middle cross brace 58.2.
- the net 56 can additionally be fixed at further anchor points 59.3 along the planes.
- the net 56 has the advantage that any load carriers 12 ejected from the shuttle 8 by the abrupt braking thereof are also stopped.
- FIG. 3 shows a detailed view of the invention, in which a shelving system 2 is shown with two circumferential retaining elements 51.4 designed as cables in the example shown.
- the shelving system 2 is limited to two elevators 14 and an aisle 6 with rails 9 and a shuttle 8 in the example shown.
- the cables 51.4 are arranged from top to bottom over several levels of the shelving system 2 and are guided by guides 57.
- the retaining element 51.4 is not held at the top and bottom of the shelf system via anchor points 59.1, but is deflected at the top and bottom of the shelves 3 via a deflection roller 60 in each case.
- the cable 51.4 is attached directly to anchor points 59.4 on the elevator platform 62 of the elevators 14, which are connected to the drives (not shown) of the elevator 14 via a connection 61.
- An elastic element designed as a spring 63, a damper 64 and an active pretensioning unit 65 are arranged between the elevator platforms 62 and the anchor points 59.4 of the cable 51.4.
- the spring 63 which is designed as a tension spring, can pretension the cable 51.4. Furthermore, the spring 63 can alleviate the abrupt loading of the rope 51.4, thereby reducing the loading on the anchor points 59.4.
- the spring 63 advantageously facilitates the pulling apart of the cables 51.4.
- the damper 64 dampens the movement of the rope 51.4 in the event of a belay and advantageously prevents an abrupt movement Stopping the rope 51.4, for example, at a stop.
- the active pretensioning unit 65 can pretension the rope 51.4 higher before the shuttle 8 impacts. As a result, the movement of the cable 51.4 by the shuttle 8 in the direction of travel of the shuttle 8 can be reduced.
- the active pretensioning unit 65 can be integrated in the damper 64 and/or bridge the spring 63 in the event of a belay in order to achieve an even more rigid connection between the cable 51.4 and the damper 64.
- FIG. 4 shows a further detailed view of the invention, in which the end of a shelf system 2 of a shuttle warehouse 1 is shown in a plan view.
- the rail 9 of the shuttle 8 up to the transfer stations 13 at the end of the shelves 3 is shown in FIG. 4 by a solid line. This represents the area of the rail 9 traveled over by the shuttle 8 during operation.
- the continuation of the rail 9 is shown in dashed lines in FIG. 4, with the left and the right side representing two different embodiments.
- the shuttle 8 only travels over this area in the event of a backup or if the shuttle 8 is to be taken out of the rack system 2 for maintenance purposes.
- a light barrier 66 is arranged at the interface of the two areas, which can detect when the shuttle 8 has left the area used during operation.
- the signal can be sent to a controller (not shown), which can trigger the active bias unit 65, for example.
- the left-hand side of FIG. 4 shows a first embodiment in which the elevator 14 is arranged in a plane parallel to the front of the shelving system 2 next to the transfer station 13. This is particularly advantageous if the shelf 3 is designed in such a way that it can accommodate at least 2, 3, 4, 5 or 6 load carriers 12 one behind the other.
- the lateral arrangement of the elevator 14 reduces the length of the shelf 3 or creates more space for load carriers 12 for a given length of the shuttle warehouse 1 .
- the load carriers 12 are transported from the drawer 14 via the transfer station 13 to the shuttle 8 according to the double arrows.
- the running rail 9 can be made shorter by the device 50 according to the invention with the retaining element 51, which is arranged over several levels along the front side of the shelf system 2, whereby further Space is saved.
- the right-hand side of FIG. 4 shows a second embodiment in which the elevator 14 is arranged in front of the transfer station 13 as an extension of the shelf 3 .
- the double arrows shown in FIG. 4 indicate the movement of the load carriers 12 from the elevator 14 via the transfer station 13 to the shuttle 8.
- the travel rail 9 can be continued to the front end of the elevator 14 without any disadvantages in terms of installation space.
- the retaining element 51 can be arranged either at the end of the travel rail 9, as on the left-hand side, or further in the direction of the shelves 3, which is illustrated by a retaining element 51 shown in dashed lines in FIG.
- This has the advantage that the braking distance of the shuttle 8 can be lengthened and the load on the shuttle 8 can thereby be advantageously reduced, as a result of which the risk of damage to the shuttle 8 is reduced.
- the shuttle 8 comprises recesses 54 for the retaining element 51 and a crumple zone 55.
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Warehouses Or Storage Devices (AREA)
Abstract
Description
Claims
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DE102020122390.0A DE102020122390A1 (en) | 2020-08-27 | 2020-08-27 | Device for securing a shuttle, shuttle and shelving system |
PCT/EP2021/073305 WO2022043277A1 (en) | 2020-08-27 | 2021-08-23 | Device for securing a shuttle, shuttle and shelf system |
Publications (1)
Publication Number | Publication Date |
---|---|
EP4204328A1 true EP4204328A1 (en) | 2023-07-05 |
Family
ID=77801647
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
EP21772678.5A Withdrawn EP4204328A1 (en) | 2020-08-27 | 2021-08-23 | Device for securing a shuttle, shuttle and shelf system |
Country Status (4)
Country | Link |
---|---|
US (1) | US20230219754A1 (en) |
EP (1) | EP4204328A1 (en) |
DE (1) | DE102020122390A1 (en) |
WO (1) | WO2022043277A1 (en) |
Family Cites Families (9)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
CH359607A (en) * | 1957-01-28 | 1962-01-15 | Baas Erwin | Device for braking aircraft when landing |
GB840540A (en) * | 1958-02-17 | 1960-07-06 | Willem Dekkers Van Zelm | Energy absorption unit |
GB1327372A (en) * | 1970-08-28 | 1973-08-22 | Mactaggart Scott | Aircraft arresting gear |
DE2249623A1 (en) | 1972-10-10 | 1974-04-25 | Ind Planungs Ges Mbh | WALK-IN HIGH-BAY WAREHOUSE |
MXPA03009050A (en) * | 2001-04-04 | 2004-08-13 | J Calleja Michael | Warehouse pallet-rack safety netting system. |
EP2025594A4 (en) * | 2006-05-11 | 2012-08-29 | Aerovision Vehiculos Aereos S L | Device and method for recovering unmanned airborne vehicles |
DE102008022323A1 (en) * | 2008-04-30 | 2009-11-12 | SSI Schäfer AG | Shuttle channel warehouse, shuttle station, shuttle and procedures for operating the shuttle channel warehouse |
DE102011000447A1 (en) | 2011-02-01 | 2012-08-02 | Dematic Accounting Services Gmbh | transport system |
US9545150B2 (en) | 2013-10-11 | 2017-01-17 | Steel King Industries, Inc. | Storage rack assembly with dual-rail truss-beam |
-
2020
- 2020-08-27 DE DE102020122390.0A patent/DE102020122390A1/en active Pending
-
2021
- 2021-08-23 EP EP21772678.5A patent/EP4204328A1/en not_active Withdrawn
- 2021-08-23 WO PCT/EP2021/073305 patent/WO2022043277A1/en unknown
-
2023
- 2023-02-27 US US18/114,618 patent/US20230219754A1/en active Pending
Also Published As
Publication number | Publication date |
---|---|
DE102020122390A1 (en) | 2022-03-03 |
US20230219754A1 (en) | 2023-07-13 |
WO2022043277A1 (en) | 2022-03-03 |
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