EP0765837A1 - Dispositif de levage mobile - Google Patents

Dispositif de levage mobile Download PDF

Info

Publication number
EP0765837A1
EP0765837A1 EP96202682A EP96202682A EP0765837A1 EP 0765837 A1 EP0765837 A1 EP 0765837A1 EP 96202682 A EP96202682 A EP 96202682A EP 96202682 A EP96202682 A EP 96202682A EP 0765837 A1 EP0765837 A1 EP 0765837A1
Authority
EP
European Patent Office
Prior art keywords
lifting
lifting device
drive
steering
frame
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
Application number
EP96202682A
Other languages
German (de)
English (en)
Other versions
EP0765837B1 (fr
Inventor
Hermanus Ursinus
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Reiniging en Reststoffen Bedrijf BV
Original Assignee
Reiniging en Reststoffen Bedrijf BV
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed by Reiniging en Reststoffen Bedrijf BV filed Critical Reiniging en Reststoffen Bedrijf BV
Publication of EP0765837A1 publication Critical patent/EP0765837A1/fr
Application granted granted Critical
Publication of EP0765837B1 publication Critical patent/EP0765837B1/fr
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

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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
    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61G—TRANSPORT, PERSONAL CONVEYANCES, OR ACCOMMODATION SPECIALLY ADAPTED FOR PATIENTS OR DISABLED PERSONS; OPERATING TABLES OR CHAIRS; CHAIRS FOR DENTISTRY; FUNERAL DEVICES
    • A61G7/00—Beds specially adapted for nursing; Devices for lifting patients or disabled persons
    • A61G7/08—Apparatus for transporting beds

Definitions

  • the invention relates to a mobile lifting device for moving objects which are movable on wheels.
  • the invention also relates to a device for moving a person seated on a chair.
  • Devices for moving relatively heavy objects comprising a mobile frame and a lifting device mounted thereon, are known.
  • the known devices frequently comprise an arm which can be introduced under an object to be moved, after which said arm is raised mechanically or hydraulically so that the object in its entirety comes away from the ground.
  • the device, together with the object is then moved to the desired position, during which operation the wheels of the lifted object are not effective.
  • the disadvantage of the known devices is that these have to have a lifting device with a relatively long stroke in order to raise the objects to be moved off the ground.
  • the lifting mechanism has to be of relatively powerful construction in order to raise the heavy objects in their entirety.
  • One aim of the present invention is to provide a lifting device with which relatively heavy objects can be moved in a simple manner.
  • a further aim of the invention is to provide a lifting device which is relatively small and easy to operate and with which relatively heavy objects can be transported quietly with little effort.
  • a mobile lifting device characterised in that the lifting device comprises:
  • the parts of the object to be moved which are located close to the lifting unit can be raised over a relatively small distance, whilst the wheel or the wheels of the object which are located some distance away from the lifting unit remain in contact with the ground.
  • the object to be moved is brought into a position where on one side it rests on one or more of its own wheels and on the other side it rests on the steerable lifting and pulling device, as a result of which the object can be moved in a simple manner and manoeuvred into a desired position.
  • the object to be moved can be, for example, a hospital bed which is mounted on four wheels.
  • Beds of this type are heavy and in general difficult to manoeuvre, despite the fact that the beds are provided with swivel castors.
  • the lifting device according to the invention By using the lifting device according to the invention, two wheels of the bed are raised from the ground and thus rendered inoperative. As a result, the bed can be moved in a simple manner by moving it on its rear wheels and it can be manoeuvred into the correct position without unnecessary effort.
  • the lifting device according to the invention it would be possible to dispense with two wheels per hospital bed.
  • the device according to the invention is also suitable for moving objects other than beds, such as, for example, containers, having two or more wheels.
  • the invention also relates to a lifting device of the abovementioned type in which the lifting unit is constructed as a coupling element and an attachment which is detachably connected to the coupling element without the use of tools.
  • the coupling element can, for example, comprise one or more pins over which the attachment, such as, for example, a claw-shaped element or a supporting element of some other shape which is provided with matching sleeves, can be slid.
  • the invention also relates to a mobile lifting device for moving a person seated on a chair, characterised in that the device comprises:
  • the mobile lifting device can be moved beneath a chair, after which the lifting unit is made to engage on the underside of the seat.
  • the chair is raised a number of centimetres from the floor, after which the chair and the person seated thereon can be moved in a simple manner.
  • the lifting unit is preferably provided with a footrest to support the feet of a person seated on the lifted chair. This prevents the feet of the person coming into contact with the floor when the chair is moved and the person can be moved with a small stroke of the lifting unit.
  • the lifting and pulling device comprises three wheels, the steering wheel being located on a perpendicular bisector of the axle of the drive wheels.
  • the steering wheel can be operated by lateral movement of the steering rod. In this way a very small turning circle of the device can be obtained.
  • the steering wheel is pivotably connected to the frame and the steering rod is rigidly connected to the frame.
  • the vertical arm of the lifting device is connected to two parallel drive arms, an upper drive arm of which is hingeably connected to a horizontally movable drive element.
  • a second end of the lower drive arm is hingeably connected to the frame of the lifting device.
  • the lifting device comprises a switch for interrupting the drive for the drive wheels.
  • the switch is actuated when the steering arm is in a furthest vertical position.
  • the steering arm is connected to the frame via a resilient element which pulls said steering arm into the vertical position as soon as the steering rod is released by an operator.
  • the handle of the steering rod can have a push-bar switch located close to the centre of the handle. It may happen that when the lifting device is in motion the steering rod becomes trapped below the waist of the operator and can no longer be brought into the vertical position and thus the device can no longer be switched off. In this case the lifting device is immediately deactivated by means of the push-bar switch on the handle of the steering rod.
  • both the drive for the wheels and the drive for the lifting unit are electric and the device is provided with a rechargeable battery, preferably 4 rechargeable batteries.
  • a number of attachments are provided which can be attached to the lifting unit to engage on different objects. No tools are needed to connect the attachments.
  • the attachments By using the attachments, a large number of different objects, such as mobile beds, mobile containers, food trolleys, order trucks in warehouses, sterilisation trolleys, chairs, mobile pallets and the like, can be moved by a single lifting device according to the invention.
  • an attachment with a support wheel it is also possible to move objects which themselves do not have any wheels.
  • Figure 1 shows a mobile lifting device 1 comprising a frame 3 having two drive wheels 4 and a steering wheel 6.
  • a steering rod 7 is connected to the frame 3 and has a handle 11.
  • a lifting unit 13 with, for example, a claw-shaped element 14 is located at the front of the lifting device 1.
  • the claw-shaped element 14 can be brought into contact with, for example, the frame of a hospital bed 2 mounted on wheels 17, 17'.
  • the lifting unit 13 comprises a lifting surface 15, a pulling surface 16 and a pushing surface 18.
  • the lifting unit 13 can be moved up and down by operating the handle 11.
  • the lifting device 1 is moved under the frame of the bed 2 with the lifting unit 13 in a lowest position, in which position said unit is at a distance of about at least 5 cm away from the floor 9.
  • the lifting surface 15 is then brought into contact with the frame of the bed 2 and the frame is raised a few centimetres from the ground. As a result the front wheels 17' are raised from the floor 9, whilst the rear wheels 17 remain resting on the floor.
  • the wheels of the lifting device are electrically driven to move forward or in reverse by operation of the handle 11 by an operator 10. This causes the pushing surface 18 or the pulling surface 16 to come into contact with the frame of the bed 2 and said bed is moved over the floor 9, easily steerable in the forward or reverse direction.
  • the effort required on the part of the operator 10 for this operation is restricted to steering of the bed as it is pulled along, which steering can be effected by lateral movement of the steering rod 7.
  • the lifting unit 13 is moved downwards so that the frame of the bed comes free from the claw-shaped element 14.
  • the lifting device is then moved away from under the bed.
  • One embodiment of the lifting device 1 is approximately 70 cm long, 40 cm wide (the width direction is perpendicular to the plane of the drawing in Figure 1) and has a maximum height of about 30 cm. In a preferred embodiment, the stroke of the lifting unit 13 is about 11.5 cm.
  • the drive wheels 4 of the lifting device 1 are driven by two electric motors, which are powered by a battery, with battery charger, incorporated in the lifting device. A maximum speed of about 5 km per hour can be reached, with a maximum pulling force of about 750 kg.
  • the lifting unit 13 can also have, for example, two vertical pins with a rectangular, circular or polygonal cross-section. Using these pins various attachments can be connected which are provided with sleeves which fit over the pins and which can be slid over the pins in a simple manner.
  • the lifting unit 13 is likewise driven by an electrically powered drive unit with which a load of up to 400 kg can be lifted over a distance of between 10 cm and 50 cm. In many cases it is possible to move the objects mounted on wheels which have to be moved by moving the lifting unit 13 just a few centimetres.
  • FIG. 2 shows a side view of an embodiment of the lifting device according to the invention.
  • the lifting device 1 comprises two drive wheels 4 which are rotatable about an axle 26 which is located perpendicular to the plane of the drawing, which axle 26 is rotatably mounted in a bearing 19.
  • a steering wheel 6 is located on the perpendicular bisector of the axle 26.
  • the steering wheel 6 is connected to the frame 3 such that it is rotatable about a vertical shaft and can be operated by moving steering rod 7 in a direction which is perpendicular to the plane of the drawing in Figure 2.
  • Each of the wheels 4 and 5 is driven by an electric motor 36, 36'.
  • the motors 36, 36' are 24 V DC motors which are continuously variable and move the lifting device at a maximum speed of 5 km/h.
  • Each motor 36, 36' is equipped with a planetary reduction mechanism, so that the speed can be adjusted to a low speed range for manoeuvring the lifting device by the operator and can be adjusted to the high speed range for moving the lifting device.
  • the motors 36, 36' are powered by a battery set 45.
  • the battery set 45 comprises four 12 V batteries rated at 18 A hours.
  • Motors 36, 36' drive the wheels 4 and 5 in a forward or reverse direction over the floor 9 in response to rotation of a handle 11 by the operator in a direction away from the operator or towards the operator.
  • the claw-shaped element 14 of the lifting unit 13 comprises a vertical arm 31 which is connected at two hinge points 34, 34' to an upper drive arm 33 and a lower drive arm 32.
  • the lifting unit 13 can be constructed as one or more flattened vertical tubes over which a separate attachment, such as a claw-shaped element, can be placed. This is shown diagrammatically in Figure 6.
  • One end of the upper drive arm 33 is hingeably connected at a hinge point 30' to electric lifting motor 40.
  • the lower drive arm 32 is connected to the frame 3 at hinge point 30.
  • a rod 46 By sliding out a rod 46, the claw-shaped element 14 is moved downward into a position which is indicated by a broken line.
  • a rear of the lifting motor 40 is connected at a hinge point 47 so that the position of the lifting motor can vary when the rod 46 slides out. In this way a powerful vertical lifting movement can be obtained with a relatively short horizontal stroke of the lifting motor 40.
  • a suitable lifting motor 40 is a 24 V DC motor with a permanent magnet, such as is manufactured by LINAK under model number Model LA28.
  • One end of the steering rod 7 is connected to a gas spring 38 so that the steering rod is pulled into a vertical position by the gas spring. When it reaches this position the steering rod 7 actuates a switch 37 which interrupts the power supply to the motors 36, 36'. As a result, the lifting device 1 is not able to move on its own after the steering rod 7 has been released by an operator.
  • a control panel 8 is located on the handle 11 of the steering rod 7. Control buttons for moving the lifting unit 13 are accommodated on this panel.
  • a push-bar switch 39 is accommodated on an operator side of the control panel 8, which push-bar switch 39 extends over virtually the entire width, located transverse to the plane of the drawing, of the control panel 8 (about 20 cm). Pressing push-bar switch 39 interrupts the power supply from the battery 45 to the motors 36, 36'. This prevents the operator from becoming trapped by the control rod 7 of the moving lifting device when the lifting device 1 is reversing.
  • the lifting device 1 is covered by a plastic protective cover 20, for example a cover made of ABS-APDF material.
  • FIG 3 shows a top view of the lifting device 1 in Figure 2.
  • the motors 36, 36' are connected via a chain to the axle 26.
  • a battery charger 29 and a control box 49 are accommodated on either side of the lifting motor 40.
  • the control box 49 contains a 24 V electronic voltage control, a 30 A thermal fuse for each motor 36, 36' and a 5 A thermal fuse for the lifting motor 40.
  • Figure 4 shows a mobile lifting device in which a detachable attachment 52 has been placed in the claw-shaped elements 14 of the lifting unit 13.
  • the attachment 52 comprises two parallel arms 54, only one arm of which is visible in the side view in Figure 4, which arms can be brought into contact with an underside of a chair. In this way a chair and the person seated thereon can be lifted from the ground and transported. During transportation, the feet of the person seated on the chair rest on the footrest 25 of the attachment 52.
  • Figures 5 and 6 show a separate attachment 52, which can have a number of different shapes, for attachment to the lifting unit 13, without tools being required for this.
  • the lifting device can be adapted to different geometries of objects to be moved, which objects can be mobile pallets, food trolleys, linen trolleys, waste containers, sterilisation trolleys, order trucks in warehouses, etc.
  • Figure 7 shows an attachment 52 which has an extendable support wheel 55.
  • the support wheel 55 allows relatively heavy objects to be transported on two arms 54, only one arm of which is visible in the side view in Figure 7, which objects do not have any wheels permanently attached to such an object.
  • the support wheel 55 acts as a running wheel for the objects and prevents the lifting device from tipping forwards when lifting and moving the objects.
  • the wheel 55 is mounted in a sleeve 56 and can slide therein in the vertical direction.
  • a steel cable 58 is attached to a top of the wheel suspension 57 and drops down in a vertical channel which extends over the entire length of the sleeve 56.
  • the cable 58 is fed via a guide 61 to a bracket 59 which is attached to a front of the frame 3.
  • the cable end 60 is attached to the arms 54.

Landscapes

  • Life Sciences & Earth Sciences (AREA)
  • Engineering & Computer Science (AREA)
  • Geology (AREA)
  • Mechanical Engineering (AREA)
  • Structural Engineering (AREA)
  • Handcart (AREA)
EP19960202682 1995-09-26 1996-09-25 Dispositif de levage mobile Expired - Lifetime EP0765837B1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
NL1001294 1995-09-26
NL1001294A NL1001294C2 (nl) 1995-09-26 1995-09-26 Verrijdbare hefinrichting.

Publications (2)

Publication Number Publication Date
EP0765837A1 true EP0765837A1 (fr) 1997-04-02
EP0765837B1 EP0765837B1 (fr) 2002-08-21

Family

ID=19761631

Family Applications (1)

Application Number Title Priority Date Filing Date
EP19960202682 Expired - Lifetime EP0765837B1 (fr) 1995-09-26 1996-09-25 Dispositif de levage mobile

Country Status (4)

Country Link
EP (1) EP0765837B1 (fr)
DE (1) DE69623089T2 (fr)
DK (1) DK0765837T3 (fr)
NL (1) NL1001294C2 (fr)

Cited By (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP1350705A2 (fr) * 2002-04-04 2003-10-08 Mastermover International Limited Dispositif de transfert de charge
WO2006066321A1 (fr) * 2004-12-24 2006-06-29 Reapan Pty Limited Dispositif de levage
EP2039336A3 (fr) * 2007-09-06 2009-06-03 Holdingselskabet MKR Finans ApS Système de transport avec une unité d'entraînement
NL1034846C2 (nl) * 2007-12-20 2009-06-23 Jan-Hein Van Drogenbroek Hefinrichting voor stoelen.
GB2495484A (en) * 2011-10-07 2013-04-17 Ferno Uk Ltd Portable auxiliary drive unit for a wheeled load
US20140299826A1 (en) * 2011-10-12 2014-10-09 Austech & Design Pty Ltd. Lifting and Transporting Device Including Front Load Supporting Castors and Associated Linkage System
US9913771B2 (en) 2011-06-17 2018-03-13 Austech & Design Pty Ltd Lifting and transporting device for wheeled objects including hospital beds

Citations (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2543308A (en) * 1945-11-13 1951-02-27 Wolf Edward Portable jack
US2568827A (en) * 1949-12-16 1951-09-25 American Hydraulics Inc Wheeled bumper jack
DE897805C (de) * 1948-05-07 1953-11-23 Curt Erik Simon Wennberg Elektrokarren
US3417833A (en) * 1966-09-28 1968-12-24 Thomas J. Mcrae Apparatus for pushing vehicles
CH533570A (fr) * 1971-09-22 1973-02-15 Mattille & Fils S A A Dispositif pour manoeuvrer des engins de transport, notamment des semi-remorques
US3724586A (en) * 1970-05-04 1973-04-03 Lansing Bagnall Ltd Pedestrian operated industrial trucks
US4721429A (en) * 1984-12-24 1988-01-26 Kawasaki Jukogyo Kabushiki Kaisha Traversing apparatus for long and heavy article
DE8810335U1 (de) * 1988-08-16 1989-03-23 Joos, Dieter, 7057 Leutenbach Kfz-Rangierheber mit elektro-motorischem Fahrantrieb (handgeführt).

Patent Citations (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2543308A (en) * 1945-11-13 1951-02-27 Wolf Edward Portable jack
DE897805C (de) * 1948-05-07 1953-11-23 Curt Erik Simon Wennberg Elektrokarren
US2568827A (en) * 1949-12-16 1951-09-25 American Hydraulics Inc Wheeled bumper jack
US3417833A (en) * 1966-09-28 1968-12-24 Thomas J. Mcrae Apparatus for pushing vehicles
US3724586A (en) * 1970-05-04 1973-04-03 Lansing Bagnall Ltd Pedestrian operated industrial trucks
CH533570A (fr) * 1971-09-22 1973-02-15 Mattille & Fils S A A Dispositif pour manoeuvrer des engins de transport, notamment des semi-remorques
US4721429A (en) * 1984-12-24 1988-01-26 Kawasaki Jukogyo Kabushiki Kaisha Traversing apparatus for long and heavy article
DE8810335U1 (de) * 1988-08-16 1989-03-23 Joos, Dieter, 7057 Leutenbach Kfz-Rangierheber mit elektro-motorischem Fahrantrieb (handgeführt).

Cited By (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP1350705A2 (fr) * 2002-04-04 2003-10-08 Mastermover International Limited Dispositif de transfert de charge
EP1350705A3 (fr) * 2002-04-04 2004-06-09 Mastermover International Limited Dispositif de transfert de charge
WO2006066321A1 (fr) * 2004-12-24 2006-06-29 Reapan Pty Limited Dispositif de levage
EP2039336A3 (fr) * 2007-09-06 2009-06-03 Holdingselskabet MKR Finans ApS Système de transport avec une unité d'entraînement
NL1034846C2 (nl) * 2007-12-20 2009-06-23 Jan-Hein Van Drogenbroek Hefinrichting voor stoelen.
US9913771B2 (en) 2011-06-17 2018-03-13 Austech & Design Pty Ltd Lifting and transporting device for wheeled objects including hospital beds
GB2495484A (en) * 2011-10-07 2013-04-17 Ferno Uk Ltd Portable auxiliary drive unit for a wheeled load
US20140299826A1 (en) * 2011-10-12 2014-10-09 Austech & Design Pty Ltd. Lifting and Transporting Device Including Front Load Supporting Castors and Associated Linkage System
US9919906B2 (en) * 2011-10-12 2018-03-20 Austech & Design Pty Ltd Lifting and transporting device including front load supporting castors and associated linkage system

Also Published As

Publication number Publication date
NL1001294C2 (nl) 1997-03-28
DK0765837T3 (da) 2002-12-23
DE69623089T2 (de) 2003-05-08
EP0765837B1 (fr) 2002-08-21
DE69623089D1 (de) 2002-09-26

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