Elevator – industrial lift truck – or stationary lift for vehicle – Stationary lift for roadway vehicle or required component... – Having specific drive means for support
Patent
1988-06-17
1988-06-14
Rolla, Joseph J.
Elevator, industrial lift truck, or stationary lift for vehicle
Stationary lift for roadway vehicle or required component...
Having specific drive means for support
187 9R, 254124, 414718, 414728, B66F 922, B66F 912
Patent
active
047505885
DESCRIPTION:
BRIEF SUMMARY
This invention relates to load-handling apparatus and is especially but not exclusively concerned with such apparatus for presenting missiles to the underside of the fuselage and the wings of an aircraft for attachment to missile mounting points thereon.
The problems involved in designing a load handling trolley include, inter alia, the requirement that the apparatus must be able easily and readily to engage and lift the missile off its transport racking, which is used to convey it from the armoury to the aircraft, the requirement that the apparatus must be able to present the missile in correct orientation to the aircraft, i.e. vertical approach of the horizontal missile to the underside of the fuselage, and a 45.degree. approach to the wing pylons, the requirement that the apparatus must be able to manoeuvre under the aircraft without risk of damage to the aircraft or undercarriage of same, and the requirement that the apparatus must be capable of presenting the missile to the wing pylon stations without interference or damage to a large diameter fuel tank supported on the wing pylon.
It is an object of the present invention to provide a load-handling apparatus which satisfies these requirements.
According to the present invention there is provided a load-handling apparatus comprising a low support frame, a pair of separate, side-by-side cranked support arms pivoted at one end on the support frame and hydraulically linked for synchronised vertical movement relative to the support frame about a horizontal axis, and load engaging means at the other end of each support arm.
Preferably the support frame is substantially U-shaped in plan view. It is preferably wheelmounted for ease of movement (castor wheels being preferred). It is preferably provided with brake means to immobilise it during a load lifting operation (a pair of floor brakes are preferred). Finally, it is preferably provided with at least one but probably two steering handles which may be detachable.
Each cranked support arm is double cranked so that in side elevation it has a stretched flat-bottomed V-configuration.
The support arms are preferably movable about a common horizontal pivot axis on the support frame by hydraulic actuating means, whereof the hydraulic fluid serves to couple the support arms together for synchronised movements.
Preferably, the hydraulic actuating means is a master hydraulic cylinder connecting the support frame and one support arm and a slave hydraulic cylinder connecting the support frame and the other support arm.
Preferably, each load engaging means is a support head carried by a slidable extension of each support arm and adapted partially to embrace a load.
Each support head is preferably of semioctagonal configuration with retaining straps.
Preferably each support arm and its extension is connected by a levelling or trimming hydraulic cylinder, which cylinders are independently adjustable to level or trim the disposition of the support heads for correct presentation of the load.
The cylinders (master, slave and levelling) are preferably connected to a self-contained pump and hydraulic fluid reservoir on the support frame by convenient piping which includes selector valves for delivering hydraulic fluid respectively to the master and slave cylinders and to the levelling cylinders when required.
The pump preferably has a pressure relief valve for cylinder retraction. The pump is preferably manually operable.
It is desirable to provide a facility for fine angular adjustment which, with the aforesaid horizontal trimming facility, allows for compensation of aircraft attitude variations. It is also desirable to have a horizontal traverse facility for fuel engagement of the missiles.
With this in mind, each support head preferably incorporates rolling means to permit rotational and/or longitudinal movements of the load relative to the support heads by an operator. In the case of a missile this may be necessary to permit correct alignment of the complementary mounting points on the missile and the aircraft.
The rolling
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Didsbury Engineering Company Limited
Pedersen Nils E.
Rolla Joseph J.
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