Material or article handling – Land vehicle or boat tilting and lifting devices
Patent
1996-01-30
1997-09-30
Merritt, Karen B.
Material or article handling
Land vehicle or boat tilting and lifting devices
254 3B, 414778, B66F 722
Patent
active
056720432
DESCRIPTION:
BRIEF SUMMARY
BACKGROUND OF THE INVENTION
1. Field of the Invention
The invention relates to a lifting and swivelling apparatus for objects, in particular motor vehicles and the like, comprising substantially horizontally extending tie rods, a frame which can swivel about a substantially horizontal axis of the tie rods, and a lifting device which can swivel about a substantially horizontal axis of the tie rods and is connected to the frame in an articulated manner by means of a holding means which is displaceable along the lifting device, the holding means being designed to be displaceable along the lifting device and being lockable in position at any point desired, via an actuating device.
2. Description of the Prior Art
A lifting apparatus of this kind is known from EP-A 0 285 292. In that instance, it is used exclusively to tilt a vehicle, to which is attached a so-called "automobile cradle", in order to prevent manual tilting. Subsequently, the lifting apparatus is removed, and the automobile rests in the cradle.
The drawbacks in this apparatus are the absence of connecting means between the cradle and the lifting apparatus during the lifting operation, and the danger that the automobile will tilt back once the lifting apparatus has been removed.
A further tilting apparatus according to EP-A 0 410 013 overcomes these drawbacks but, in order to use the apparatus, the vehicle must be jacked up so that all wheels can be removed and corresponding parts of the apparatus can be mounted on the wheel mounts. This work outlay is justified for a total overhaul of the bottom plate, but not for an inspection.
SUMMARY OF THE INVENTION
The object of the invention is to provide an apparatus of the kind mentioned at the outset, which does not have the disadvantages of known apparatus, while being easy to operate and reliable during all stages of use.
According to the invention, this object is achieved in that the frame is a clamping frame which, on its side facing away from the lifting device, has a supporting frame which is curved substantially through 90.degree. and subsequently continues to extend rectilinearly, and in that fastening means are provided on the clamping frame for the purpose of locking the object to be tilted into position. It is for this reason that the frame is referred to as a clamping frame in the description and in the claims.
Accordingly, the invention relates in particular to a tilting apparatus for motor vehicles, trailers, freight cars, machines, and structural members, which is supported at four points and includes the clamping frame which can be swivelled into dead center by means of a lifting device which is connected to the frame in an articulated manner, in order to provide access, in a simple manner, to the underside of the object to be tilted for the purpose of carrying out maintenance, repair or assembly work. The apparatus preferably includes means via which the objects on which work is to be carried out, in so far as they are motor vehicles, can be driven into the tilting apparatus and locked in position on the clamping frame of the tilting apparatus by means of a clamping device, without necessitating the removal of the wheels, and can be brought, by a person with little expenditure of force, into a position as required to carry out work by means of a winch or a similar lifting device, wherein a means to prevent overtipping prevents any overturning. The return into the starting position is carried out by a return movement of the lifting device.
The safety device according to the invention takes into consideration that the different dimensions of the objects to be tilted, in particular motor vehicles, produce different tilting angles according to the different positions of their centers of gravity, which necessitates a variable tipping angle adjusting means to permit a reliable prevention of overtipping.
The tilting apparatus according to the invention is characterized, in particular, in that an adjustable means to prevent overtipping reliably prevents any danger of tipping over, and that it
REFERENCES:
patent: 2622746 (1952-12-01), Campling
patent: 4971511 (1990-11-01), Stevens et al.
patent: 5174711 (1992-12-01), Binder et al.
Krizek Janice L.
Kueffner Friedrich
Merritt Karen B.
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