EP4444650A1 - Hebe- und transportvorrichtung - Google Patents
Hebe- und transportvorrichtungInfo
- Publication number
- EP4444650A1 EP4444650A1 EP22817607.9A EP22817607A EP4444650A1 EP 4444650 A1 EP4444650 A1 EP 4444650A1 EP 22817607 A EP22817607 A EP 22817607A EP 4444650 A1 EP4444650 A1 EP 4444650A1
- Authority
- EP
- European Patent Office
- Prior art keywords
- lifting
- transporting device
- chassis
- recess
- base
- 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- Withdrawn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
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
- B66F5/00—Mobile jacks of the garage type mounted on wheels or rollers
- B66F5/02—Mobile jacks of the garage type mounted on wheels or rollers with mechanical lifting gear
Definitions
- the present invention relates to a lifting and transporting device for lifting and transporting heavy loads, in particular for towing driverless transport vehicles, also referred to as AGO (autonomous guided vehicle) or AGO (autonomous guided cart).
- AGO autonomous guided vehicle
- AGO autonomous guided cart
- a lifting device which can be slid under an automobile and spread apart vertically in order to lift it is known from GB 2 144 099 B1. Rollers attached to the device allow the lifted load to be transported. However, non-steerable rollers limit possible travel directions of the device to a limited angular range on both sides of a longitudinal direction. Transverse movement is not possible, nor would it be desirable because of the risk of the lifting device tipping over.
- AGCs are used to maneuver non-powered barrows by driving under them, docking onto them from below and transmitting propulsion to the barrow through the engagement thus created.
- an AGC In order to provide the traction necessary to propel a heavy cart, an AGC generally has a mass of similar magnitude to that of a loaded cart to be towed.
- the AGC In order to fit under the carts, the AGC generally has a low-profile design with low ground clearance. Both make towing an AGC difficult in the event of a breakdown.
- the ground clearance of the AGCs is typically too low to be able to slide a device of the type known from GB 2 144 099 B1 underneath and to be able to tow the AGC with its help.
- An object of the present invention is to provide a lifting and transporting device that enables loads with low ground clearance to be transported easily and safely.
- the object is achieved in that in a lifting and transporting device with a chassis, which is supported by several rollers, and a base that can be moved vertically against the chassis for lifting an object to be transported, the chassis is viewed from above one to one side has an open recess and the base engages in the recess.
- the base can therefore be lowered close to the ground without being restricted by the chassis in order to reach under the load to be picked up and then lift it; this only has to be suitably shaped in order to engage in the recess and to be able to reach the base.
- the rollers do not have to be driven under the load to be picked up, they can have a diameter that is not limited by the ground clearance of the load. A larger diameter of the rollers makes it easier to overcome unevenness in the floor and thus enables even, low-vibration transport with little effort.
- a lowest position of the bed at which a load can be received and from which it can be lifted is preferably lower than the crests of the rollers, preferably lower than the axes of the rollers.
- the pad can rest on the ground in its lowest position.
- the base can be attached to a first arm of a two-armed lever, and an expandable element can engage the chassis and a second arm of the lever to move the second arm downwards press.
- the ground clearance of the chassis is not limited by the need to be able to drive under the load, this can be so large that the expandable element can be accommodated between an underside of the chassis and the second arm.
- the expandable element may conveniently comprise a scissor mechanism.
- the two arms meet at an obtuse angle at a pivot axis of the lever.
- this allows the pivot axis to be mounted at the height of the chassis, which simplifies the structure of the device, since no bearing is required for the pivot axis that projects downwards from the chassis; on the other hand, the carrying capacity of the lever can be increased in a simple manner by means of a strut which, together with the two arms of the lever connected by it, forms a triangle.
- the pivot axis can run through the corner of the triangle opposite the strut.
- the chassis may have two side members extending on opposite sides of the recess and a cross member connecting the side members.
- the pivot axis then runs preferably at the height of the cross member between the two.
- the latching projection can expediently be a tongue which is cut free from the second wall panel and is connected in one piece to the second wall panel at an upper end.
- At least two of the rollers should be attached to the opposite ends of the longitudinal beams from the cross member, so that the load, in order to be able to be taken up by the base, has to pass a line connecting the two rollers. This ensures the stability of the device even when the load is raised.
- At least one pin protruding from an upper side of the base can move into a complementary recess in the load when it is lifted and thus ensure that the load is firmly seated on the base even during transport.
- the top side on an opposite side to an open side of the recess can be replaced by a be level limited.
- Step and peg can be adapted to the load to be carried, in that when the load hits the step, the peg is under the recess.
- At least one of its rollers should be pivotable about a vertical axis; preferably all rollers are pivotable.
- a circle in which the roller is inscribed when rotating about the vertical axis should not overlap the recess so that a load engaging the recess cannot affect the rotation of the roller and hence the steerability of the device.
- FIG. 1 shows a plan view of a lifting and transporting device according to the invention and a front part of an AGC to be towed;
- FIG. 2 shows a cross section through the lifting and transport device along the line II-II from FIG. 1,
- FIG. 3 shows a cross-section analogous to FIG. 2 after the AGC has been raised.
- FIG. 1 shows a plan view of a lifting and transporting device 1 for towing an AGC 2, only a front part of which is visible in FIG.
- the AGC 2 has a flat, roughly cuboid housing with a width d1.
- the lifting and transporting device 1 has a chassis 3, which essentially consists of three struts, a cross member 4 and two longitudinal members 5, typically C-section steel beams.
- the cross member 4 connects the front ends 6 of the side members 5.
- the distance between the two side members 5 is slightly larger than d1, so that a recess 8 open to a rear side 7 of the chassis 3 is wide enough to pass between the side members 5 accommodate a front part of the AGC 2.
- a circle 13 describes the path that a point of the roller 12 that is furthest away from the axis 11 describes when pivoting about the axis 11 .
- the circles 13 do not overlap with the recess 8, so that the rollers 12 can also pivot freely about their axis 11 when the AGC 2 fills the recess 8.
- a drawbar 14 is rigidly connected to the chassis 3 .
- the rigid connection allows a user not only to pull the lifting and transport device 1 straight or around a curve by pulling, but also to rotate it in place by applying torque to the drawbar 14 .
- a pivot axis 15 extends parallel to the cross member 4 between the longitudinal members 5.
- the pivot axis 15 being anchored to the longitudinal members 5 in a rotationally fixed manner, e.g. welded, it can contribute to the rigidity of the chassis 3.
- a sleeve 16 is rotatably mounted on the pivot axis 15 . Since the freedom of movement of the sleeve 16 required for the lifting process described below is low, it can be prevented from uncontrolled movements in the longitudinal direction of the pivot axis 15 by designing the pivot axis 15 as a threaded spindle and the sleeve 16 as a nut meshing with the thread of the threaded spindle is.
- the arm 17 extends rearwardly into the recess 8 and carries a coupling 19 at its rear end.
- the coupling 19 is essentially L-shaped in cross section, with a plate-shaped base 20 that supports the horizontal leg of the L and a step 21 adjacent a front edge of the pad 20 forming the vertical leg.
- the pad carries two upstanding pegs 22, each at a distance d2 from the adjacent longeron 5 and a distance e from the step 21.
- the expandable element 24 is a scissor mechanism with four rods 25 connected at their ends by joints, a rod 26 extending in the transverse direction of the chassis 3, which has two mutually mirror-inverted threaded sections, and with nuts on two diametrically opposed lateral joints which, meshing with one of the threaded portions respectively, can be moved towards or away from each other by rotation of the rod.
- the arms 17, 18 are connected to one another by a strut 27 to form a triangle.
- the strut 27 extends below the pivot axis 15.
- the distance between the upper and lower links of the scissor mechanism is minimal and the distance between the coupling 19 and the floor 28 is negligible.
- the tip of the pin 22 is slightly lower than an underside 29 of the AGC 2, so that when the AGC 2 engages in the recess 8, the pad 20 can indent under the underside 29 until a front edge 30 of the AGC 2 abuts the step 21 . Since the transversal position of the AGC 2 is fixed by the engagement between the two side members 5, each pin 22 then lies exactly under and engages a recess 31 in the underside 29 when the coupling 19 is raised. In the raised position of FIG. 3 , the front part of the AGC 2 is raised so far that its motorized front wheels 32 have lost contact with the ground 28 . Only rear wheels 33, which are not motorized and can therefore be rotated easily, still touch the ground 28. The AGC 2 can now be towed.
Landscapes
- Life Sciences & Earth Sciences (AREA)
- Engineering & Computer Science (AREA)
- Geology (AREA)
- Mechanical Engineering (AREA)
- Structural Engineering (AREA)
- Handcart (AREA)
Abstract
Description
Claims
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| DE102021213992.2A DE102021213992A1 (de) | 2021-12-08 | 2021-12-08 | Hebe- und Transportvorrichtung |
| PCT/EP2022/081577 WO2023104426A1 (de) | 2021-12-08 | 2022-11-11 | Hebe- und transportvorrichtung |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| EP4444650A1 true EP4444650A1 (de) | 2024-10-16 |
Family
ID=84387824
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| EP22817607.9A Withdrawn EP4444650A1 (de) | 2021-12-08 | 2022-11-11 | Hebe- und transportvorrichtung |
Country Status (3)
| Country | Link |
|---|---|
| EP (1) | EP4444650A1 (de) |
| DE (1) | DE102021213992A1 (de) |
| WO (1) | WO2023104426A1 (de) |
Family Cites Families (13)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US2454840A (en) * | 1946-10-02 | 1948-11-30 | Warren W Ryan | Fighter airplane bomb lift |
| US4118010A (en) * | 1978-01-09 | 1978-10-03 | Hanscom Russell C | Multi-purpose lifting and mounting assembly |
| GB2144099B (en) | 1983-07-27 | 1986-08-20 | Michael Hung | Mechanical gear lifting jack |
| DE3801855A1 (de) | 1987-01-23 | 1988-09-08 | Heck Gert | Schleppfahrzeug zum manoevrieren von flugzeugen |
| DE4129407C2 (de) | 1991-09-04 | 1995-07-06 | Gutehoffnungshuette Man | Schleppfahrzeug ohne Schleppstange zum Bugsieren von Flugzeugen |
| DE4317237A1 (de) | 1992-05-22 | 1993-11-25 | Tru Hitch Inc Torrington | Lastwagen-Abschlepp-Ausleger |
| DE4415405C3 (de) | 1994-05-02 | 2001-02-15 | Goldhofer Fahrzeugwerk | Schleppfahrzeug zum Manövrieren von Flugzeugen |
| US5722810A (en) | 1995-11-07 | 1998-03-03 | Jerr-Dan Corporation | Over-center locking mechanism for tow truck wheel-lift or the like |
| FR2803799B1 (fr) | 2000-01-17 | 2002-03-15 | Christian Tortellier | Chariot de manutention, du type permettant de lever et supporter au moins une roue de vehicule |
| US6455869B1 (en) * | 2002-01-07 | 2002-09-24 | Robert L. Cook | Motorcycle wheel lift |
| DE102011080857A1 (de) * | 2010-12-21 | 2012-06-21 | Roland Fritz | Transportanhänger |
| DE102012100247B4 (de) | 2012-01-12 | 2019-05-02 | Krauss-Maffei Wegmann Gmbh & Co. Kg | Abschleppbrille für ein Abschleppfahrzeug und Verfahren zum Abschleppen eines Fahrzeugs |
| US11364944B2 (en) * | 2019-06-25 | 2022-06-21 | Gondola Skate Moving Systems Inc. | Modular gondola moving systems and methods |
-
2021
- 2021-12-08 DE DE102021213992.2A patent/DE102021213992A1/de active Pending
-
2022
- 2022-11-11 WO PCT/EP2022/081577 patent/WO2023104426A1/de not_active Ceased
- 2022-11-11 EP EP22817607.9A patent/EP4444650A1/de not_active Withdrawn
Also Published As
| Publication number | Publication date |
|---|---|
| DE102021213992A1 (de) | 2023-06-15 |
| WO2023104426A1 (de) | 2023-06-15 |
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Legal Events
| Date | Code | Title | Description |
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| STAA | Information on the status of an ep patent application or granted ep patent |
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| PUAI | Public reference made under article 153(3) epc to a published international application that has entered the european phase |
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| STAA | Information on the status of an ep patent application or granted ep patent |
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| 18D | Application deemed to be withdrawn |
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