EP3914552A1 - Lagerfahrzeug mit raupenantrieb - Google Patents
Lagerfahrzeug mit raupenantriebInfo
- Publication number
- EP3914552A1 EP3914552A1 EP21701950.4A EP21701950A EP3914552A1 EP 3914552 A1 EP3914552 A1 EP 3914552A1 EP 21701950 A EP21701950 A EP 21701950A EP 3914552 A1 EP3914552 A1 EP 3914552A1
- Authority
- EP
- European Patent Office
- Prior art keywords
- drive
- storage vehicle
- guide rail
- engagement elements
- belt
- 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.)
- Granted
Links
- 238000003860 storage Methods 0.000 claims description 55
- 229920002635 polyurethane Polymers 0.000 claims description 6
- 239000004814 polyurethane Substances 0.000 claims description 6
- 239000013013 elastic material Substances 0.000 claims description 5
- 238000003825 pressing Methods 0.000 claims description 3
- 235000004443 Ricinus communis Nutrition 0.000 claims 1
- 230000001133 acceleration Effects 0.000 abstract description 8
- 230000005540 biological transmission Effects 0.000 description 6
- 238000012423 maintenance Methods 0.000 description 4
- 239000004744 fabric Substances 0.000 description 3
- 239000000463 material Substances 0.000 description 3
- 229920001971 elastomer Polymers 0.000 description 2
- 239000004033 plastic Substances 0.000 description 2
- 229920003023 plastic Polymers 0.000 description 2
- 239000000969 carrier Substances 0.000 description 1
- 238000009434 installation Methods 0.000 description 1
- 238000005461 lubrication Methods 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B66—HOISTING; LIFTING; HAULING
- B66F—HOISTING, LIFTING, HAULING OR PUSHING, NOT OTHERWISE PROVIDED FOR, e.g. DEVICES WHICH APPLY A LIFTING OR PUSHING FORCE DIRECTLY TO THE SURFACE OF A LOAD
- B66F9/00—Devices for lifting or lowering bulky or heavy goods for loading or unloading purposes
- B66F9/06—Devices for lifting or lowering bulky or heavy goods for loading or unloading purposes movable, with their loads, on wheels or the like, e.g. fork-lift trucks
- B66F9/07—Floor-to-roof stacking devices, e.g. "stacker cranes", "retrievers"
- B66F9/072—Travelling gear therefor
Definitions
- the invention relates to a drive for vehicles that are used in warehouses, such as storage and retrieval units for storing and retrieving articles in / from shelf warehouses.
- Such storage and retrieval units take over the loading and unloading of goods from a high-bay warehouse, for example.
- the storage and retrieval unit drives to the respective storage locations in the rack warehouse and removes or loads the respective goods.
- the performance i.e. the throughput of goods of such a rack warehouse, depends critically on the speed and in particular the possible maximum acceleration of the storage and retrieval machines or other storage vehicles. In particular for vehicles with a high dead weight or high payloads, this places high demands on the drive technology of the storage vehicles.
- the weight of the vehicle With the friction wheel drive, the weight of the vehicle generates the contact pressure between the drive wheel and the road. As a result of the friction between the drive wheel and the roadway, this contact force can be used to generate a feed force from the drive wheel to the roadway in order to accelerate the vehicle.
- the magnitude of the amount of acceleration or deceleration depends accordingly on the coefficient of friction between the drive wheel and the road surface. Due to the frictional connection between the friction wheel and the roadway (similar to a motor vehicle on the road), only relatively small torques can be transmitted and thus only comparatively low accelerations or decelerations can be achieved.
- the rack and pinion drive With the rack and pinion drive, a rack is installed over the entire length of the vehicle's travel path. With the aid of a drive gear (pinion) that engages in the rack and is connected to the chassis of the storage vehicle, the rotational movement of the driven gear is converted into a translational movement. With the rack and pinion drive, high torques can be transmitted and therefore high accelerations and decelerations can be achieved. However, the high maintenance costs (lubrication) and the great noise generation as well as the comparatively high installation costs are disadvantageous.
- the present invention is therefore based on the object of proposing a drive concept for a warehouse vehicle that enables high acceleration and deceleration values with low maintenance and assembly costs for the drive elements.
- the object is achieved by the storage vehicle according to the invention, described in claim 1, which can be moved along a guide rail provided with engagement elements and has a chassis and a drive unit connected to the chassis.
- the drive unit has a drive wheel coupled to a drive motor with circumferential engagement elements, an endless drive belt provided with engagement elements, and a steering roller arrangement for guiding the endless drive belt, which is designed in such a way that the endless drive belt for driving the storage vehicle with both the drive wheel and can be brought into engagement with the engagement elements of the guide rail.
- the engaging elements or teeth of the endless drive belt mesh over a greater distance with the engaging elements of the guide rail, as are the engaging elements of the drive wheel with those of the endless drive belt.
- the driving force is therefore distributed to a plurality of pairs of engaging elements, respectively.
- the drive according to the invention thus enables high acceleration and deceleration values in both directions of movement, even with large loads, and thus high performance of the storage vehicle with, at the same time, low maintenance costs and low noise generation.
- the endless drive belt is preferably guided around the drive wheel and the steering roller arrangement in an omega geometry in such a way that the engagement elements on the same side of the endless drive belt engage both with the drive wheel and with the guide rail provided with engagement elements.
- the omega geometry enables a "compact" design of the drive.
- the steering roller arrangement preferably comprises two guide-rail-side deflection rollers and two deflection rollers facing away from the guide rail, wherein one or more of the deflection rollers can be designed as a tensioning roller for tensioning the endless drive belt.
- the drive unit can have pressure elements, preferably pressure rollers, for pressing the endless drive belt onto the guide rail provided with engagement elements.
- the endless drive belt can be made of elastic material such as plastic or rubber material, preferably made of polyurethane. The use of an NFC fabric can further reduce noise development.
- the storage vehicle preferably has guide rollers to maintain a defined distance between the drive unit and the guide rail.
- the drive unit can have one or more drive motors that are coupled to the axle of the drive wheel via a belt drive.
- the belt drive can have a step-up or step-down ratio by choosing a suitable diameter of the belt wheels and thus serve as a gear. As a result, a gear flanged to the drive motor can be dispensed with, as a result of which considerable weight can be saved.
- the drive motor can be arranged separately from the drive unit.
- the chassis of the storage vehicle preferably has a chassis and one or more running wheels.
- the invention further relates to a storage vehicle system having a guide rail provided with engagement elements and a storage vehicle according to the invention that can be moved along the guide rail.
- the engagement elements of the guide rail can be formed by toothed belts attached to them.
- the toothed belts can be made from elastic material, preferably from polyurethane.
- NFC fabric can be used to reduce noise development.
- the toothed belts are preferably fixed to the guide rail at certain intervals.
- the invention also relates to bearings which have one or more storage vehicle systems according to the invention, the guide rails being arranged in the longitudinal and / or transverse direction or also in the vertical direction according to a direction of movement of the respective storage vehicle.
- FIG. 1 shows a schematic perspective illustration of a first exemplary embodiment of the chassis of a storage vehicle according to the invention without a drive element;
- FIG. 2 shows a schematic horizontal sectional view of the drive element of the first exemplary embodiment of the storage vehicle according to the invention
- FIG. 3 shows a schematic perspective illustration of the drive element according to FIG. 2;
- FIG. 4 shows a schematic detailed illustration of the drive element according to FIG. 2;
- FIG. 5 shows a schematic horizontal sectional view of the drive element of a second exemplary embodiment of the storage vehicle according to the invention
- FIG. 6 shows a schematic perspective illustration of the drive element according to FIG. 5;
- FIG. 7 shows a schematic perspective illustration of the drive element of a third exemplary embodiment of the storage vehicle according to the invention.
- FIG. 1A shows a schematic perspective illustration of the chassis 50 of the exemplary embodiment of a storage vehicle according to the invention.
- the storage vehicle can perform any functions within a warehouse and have corresponding structures and handling elements that are not shown here and are independent of the invention.
- the storage vehicle can be used as a rack vehicle for loading and unloading goods from a high-bay warehouse or as a cross conveyor for connecting different conveyor technology elements such as roller or belt conveyors.
- the invention relates to the drive of the storage vehicle, which storage vehicle can fulfill a wide variety of functions.
- Wheel carriers which contain running wheels 30, are mounted on both sides of the chassis 50 of the exemplary embodiment shown in FIG. 1. These are used to guide the warehouse vehicle through the rack aisle. However, other wheel arrangements are also possible.
- the guide rail 40 is also shown, which is arranged in a stationary manner in the storage building and defines the travel path of the storage vehicle.
- a toothed belt 42 is provided on the guide rail 40 Engaging elements (teeth) 43 (see. Fig. 4) attached.
- the toothed belt 42 is preferably made of an elastic material such as a plastic or rubber material, in particular of polyurethane, and is fixed to the guide rail 40 at certain intervals and forms a fixed unit with it. This unit is preferably mounted over the entire length of the aisle / track of the warehouse and can be attached to the floor by means of a rail foot or the like.
- the toothed belt 42 fixed on a guide rail 40 has the further advantage of significantly lower assembly costs, since several toothed rack elements mounted one behind the other have to be aligned very precisely with one another, which means a high production effort. This effort is not necessary when using a toothed belt.
- FIG. 2 shows a schematic horizontal sectional view
- FIG. 3 shows a perspective view of the drive unit 20, which accelerates and drives the storage vehicle on the route.
- part of the chassis support 51 and one of the running wheels 30 can be seen.
- the engaging elements (teeth) of an endless drive belt 25 engage in the toothed belt 42, which in the exemplary embodiment shown has an omega geometry around an arrangement of deflection rollers 22, 24, 24a and a drive wheel or drive pulley also provided with engaging elements (teeth) 21 is performed.
- the toothed side of the endless drive belt 25 is inserted into the toothed belt 42.
- One or more deflection pulleys are movably designed as tension pulley (s) 24a for setting a suitable tension of the endless drive belt 25.
- the drive wheel 21 is coupled to an electric motor or another suitable drive unit. Due to the omega geometry, the engagement elements of the drive wheel 21 are in engagement with the engagement elements of the endless drive belt 25 over a considerable part of the circumference of the drive wheel 21, so that good power transmission from the drive wheel 21 to the endless drive belt 25 is guaranteed with little maintenance effort .
- the drive unit 20 is preferably firmly connected to the chassis support 51 of the storage vehicle and can be detached from it by dismantling various components.
- a guide roller 27 which is particularly visible in FIGS. 3 and 4
- the drive unit 20 is held at a constant distance from the chassis beam 51, so that a good engagement of the engagement elements of the endless drive belt 25 in the corresponding engagement elements of the toothed belt 42 is possible is.
- pressure rollers 28 are provided, which are used for the Force transmission required contact pressure of the endless drive belt 25 on the toothed belt 42 ensures.
- the power transmission from the endless drive belt 25 to the toothed belt 42 is distributed to a plurality of pairs of engagement elements, so that the force and thus the wear on the individual engagement element is reduced.
- noise-reducing materials such as polyurethane and NFC fabric can also be used for both the drive wheel 21, the endless drive belt 25 and the toothed belt 42.
- the toothed belt 42 introduces the force via the guide rail 40 and the floor connection into the ground.
- Figures 5 and 6 show a second embodiment of the drive unit 20 of the storage vehicle according to the invention.
- the mode of operation of the second exemplary embodiment essentially corresponds to that of the first exemplary embodiment, but is characterized by a particularly compact design.
- FIG. 7 in turn shows a third exemplary embodiment of the drive unit 20 of the storage vehicle according to the invention, which is based on the second exemplary embodiment, but differs therefrom in that two drive motors 60 are attached directly to the drive unit.
- the drive force is transmitted from the motors 60 via belt drives 29 to the drive shaft of the drive wheel 21.
- a suitable transmission or reduction can be selected between the drive motors 60 and the drive wheel 21.
- the belt drive can also serve as a transmission, which means that a heavy and voluminous motor transmission can be omitted.
- the storage vehicle according to the invention thus enables high accelerations and decelerations in both directions of movement, even with large loads, and thus an increase in the performance of the associated bearing.
- the storage vehicle can be moved along the shelf aisle of a shelf storage facility or as a cross conveyor transverse to the shelf aisle direction or to connect different conveyor technology elements such as roller or belt conveyors.
- the drive according to the invention can also be used to drive vertical conveyors.
Landscapes
- Engineering & Computer Science (AREA)
- Transportation (AREA)
- Structural Engineering (AREA)
- Civil Engineering (AREA)
- Life Sciences & Earth Sciences (AREA)
- Geology (AREA)
- Mechanical Engineering (AREA)
- Warehouses Or Storage Devices (AREA)
- Transmission Devices (AREA)
Abstract
Description
Claims
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DE102020102828.8A DE102020102828A1 (de) | 2020-02-04 | 2020-02-04 | Raupenantrieb für Lagerfahrzeug |
PCT/EP2021/051258 WO2021156062A1 (de) | 2020-02-04 | 2021-01-21 | Lagerfahrzeug mit raupenantrieb |
Publications (2)
Publication Number | Publication Date |
---|---|
EP3914552A1 true EP3914552A1 (de) | 2021-12-01 |
EP3914552B1 EP3914552B1 (de) | 2022-11-02 |
Family
ID=74285458
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
EP21701950.4A Active EP3914552B1 (de) | 2020-02-04 | 2021-01-21 | Lagerfahrzeug mit raupenantrieb |
Country Status (8)
Country | Link |
---|---|
US (1) | US20230059295A1 (de) |
EP (1) | EP3914552B1 (de) |
AU (1) | AU2021215788B2 (de) |
CA (1) | CA3163368A1 (de) |
DE (1) | DE102020102828A1 (de) |
ES (1) | ES2936308T3 (de) |
FI (1) | FI3914552T3 (de) |
WO (1) | WO2021156062A1 (de) |
Family Cites Families (10)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE2540252A1 (de) | 1975-09-10 | 1977-03-17 | Adolf Theobald | Einrichtung zum lagern von palettierten, sowie flaechen- und stabfoermigen teilen |
DE3813897A1 (de) | 1988-04-21 | 1989-11-09 | Mannesmann Ag | Arbeitsgeraet |
DE9304210U1 (de) * | 1993-03-20 | 1993-06-17 | C. Haushahn Automationssysteme GmbH, 7000 Stuttgart | Regalbediengerät |
US5452774A (en) * | 1993-10-25 | 1995-09-26 | Davis; Link H. | Endless roller chain drive with interlocking traction rail |
DE10216014B4 (de) | 2002-04-11 | 2006-04-27 | Knapp Logistik Automation Ges.M.B.H. | Verfahrbares Regalbediengerät vorzugsweise in einer Kommissionieranlage |
JP2006193271A (ja) * | 2005-01-13 | 2006-07-27 | Shin Meiwa Ind Co Ltd | コンベヤクレーン及びコンベヤクレーン装置 |
JP4538735B2 (ja) * | 2005-03-25 | 2010-09-08 | 株式会社ダイフク | リフト装置 |
AT507334B1 (de) | 2008-09-08 | 2012-04-15 | Swisslog Evomatic Gmbh | Regalbediengerät |
CN106217410B (zh) | 2016-08-25 | 2018-06-19 | 宁波朝平智能科技有限公司 | 用于全自动密集架存储库取盒机械手的节移轴 |
ES2875750T3 (es) | 2018-07-09 | 2021-11-11 | Jungheinrich Ag | Dispositivo de transporte |
-
2020
- 2020-02-04 DE DE102020102828.8A patent/DE102020102828A1/de active Pending
-
2021
- 2021-01-21 AU AU2021215788A patent/AU2021215788B2/en active Active
- 2021-01-21 EP EP21701950.4A patent/EP3914552B1/de active Active
- 2021-01-21 CA CA3163368A patent/CA3163368A1/en active Pending
- 2021-01-21 ES ES21701950T patent/ES2936308T3/es active Active
- 2021-01-21 FI FIEP21701950.4T patent/FI3914552T3/fi active
- 2021-01-21 WO PCT/EP2021/051258 patent/WO2021156062A1/de unknown
- 2021-01-21 US US17/759,936 patent/US20230059295A1/en active Pending
Also Published As
Publication number | Publication date |
---|---|
CA3163368A1 (en) | 2021-08-12 |
FI3914552T3 (fi) | 2023-01-31 |
EP3914552B1 (de) | 2022-11-02 |
AU2021215788A1 (en) | 2022-07-21 |
ES2936308T3 (es) | 2023-03-16 |
AU2021215788B2 (en) | 2024-11-21 |
DE102020102828A1 (de) | 2021-08-05 |
US20230059295A1 (en) | 2023-02-23 |
WO2021156062A1 (de) | 2021-08-12 |
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