Material or article handling – Land vehicle or boat tilting and lifting devices
Patent
1991-04-30
1993-08-24
Huppert, Michael S.
Material or article handling
Land vehicle or boat tilting and lifting devices
187 864, 187 845, B66F 722
Patent
active
052383610
DESCRIPTION:
BRIEF SUMMARY
The invention relates to a lifting and swiveling device for a motor vehicle, having a lifting device supported on the ground and a lifting arm which can be fastened on the side and bottom of the motor vehicle, can be vertically positioned and driven by a gear device which can be locked in arbitrary lifting positions.
It is known to engage a motor vehicle laterally by means of a vertically positionable lifting arm, one side of which is supported on the ground, and to raise and lower it by operating the lifting arm. However, in this case the unilateral lift is limited, because swiveling of the vehicle cannot be allowed to reach the point where it would topple over. For this reason mounting operations underneath the vehicle while it is in the lifted position can only be performed to a limited degree if there is no grease pit available.
It is the object of the invention to disclose a lifting and swiveling device for motor vehicles which is simply constructed and permits the swiveling of the vehicle by almost 90.degree. without the danger of toppling over.
This object is attained in that the lifting device has a lifting height corresponding to at least the maximum width of a vehicle, as well as a pair of swivel skids to be disposed on the vehicle opposite from the lifting device, each one consisting of a partial section approximately in the shape of a quarter circle with tangential projections, on which fastening and/or receiving devices are disposed on the inside of the circle, which are to be connected with supporting parts of the motor vehicle and the projections of which extend in the assembled state laterally upwards over the center of gravity of the motor vehicle.
The device is advantageously designed in such a way that it can be adapted to various vehicle widths and various wheel bases by means of telescopically fixable extensions.
Fastening of the device is advantageously made at the wheel hubs, since the wheel suspensions are designed for the loads occurring when the vehicle is swiveled. The fastenings at the wheel hubs are advantageously in the form of disks which can be matchingly bolted on and are releasably connected with the swivel skids.
The lifting device, which preferably is designed in the form of a lifting worm spindle, is advantageously supported with its lower end on a pair of rollers, which are connected with the ends of the swivel skids by means of a pulling connection, so that when the vehicle is lifted and swiveled the lifting device is at all times only slightly inclined and its lower part is pulled towards the vehicle during swiveling. Thus, the space for working on the underside of the vehicle remains relatively clear, flexing forces acting on the lifting device remain small and only minor lateral shearing forces are exerted on the vehicle.
The device can be applied to either side of the vehicle so that any area of the underside can be brought up to a convenient level.
The lifting device may be a hydraulic lift or a pneumatic lift as long as suitable driving means are available for it. Preferably a simple lifting worm spindle is used, which is operated from the top end via a bevel gear drive with a detent pin and a crank or preferably with a motor via a self-locking gear. In a preferred embodiment the connection between the gear and the motor is releasable and the motor connection is adapted to a commercially available drill, so that it can be clamped there.
For increased assurance against toppling over, a support is pivotably disposed between each one of the swivel skids, which extends vertically in the fully swiveled state and, in addition to the locked lifting device, prevents toppling of the vehicle.
The front and rear swivel skids are connected at their ends by means of an insertable connecting bar, so that the side of the motor vehicle to be swiveled down is protected during swiveling and conversely persons and objects are kept away from the side during swiveling. The connecting bar is disposed at such a level that the center of gravity of the vehicle is located at a considerab
REFERENCES:
patent: 1478256 (1923-12-01), Reid
patent: 1640293 (1927-08-01), Pitt
patent: 3674252 (1972-07-01), Crabtree
patent: 4579505 (1986-04-01), Lauritsen
patent: 4594048 (1986-06-01), Sipla
Huppert Michael S.
Morse Gregory A.
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