DE1896668U - RING-SHAPED HOOK WITH AUTOMATIC SAFETY LOCK FOR LIFTING EQUIPMENT. - Google Patents

Description

PATENT LAWYERS
piPL.-ΙΝΘ, FRITZ THIELEKE DR.-INQ. RUDOLF DÖRING DR. JOACHIM FRIC

BRAUNSCHWEIG - MUNICH

Albert Koch, Strasbourg-Ieudorf (Bas-Rhin) France Aioerx λ ο » ₁₈ ^ _{Eoute du} p _ol yg _One

The invention relates to an annular hook with an automatic Safety lock for hoists,

The accidental unhooking of those suspended from the hook of a hoist Load can lead to numerous accidents, not only the destruction of the load and the material or the equipment on which it falls, but in particular sometimes very serious and even fatal injuries to people who are within reach of the falling load. The users of lifting equipment of all kinds must therefore be able to have hooks that have an 'unconditional guarantee against offer any risk of accidental unhooking of the load, learner these hooks must at the same time be so simple that they have required strong structure, in particular each sensitive part must be avoided, must also they be easy to operate and work practically automatically, and in addition, an incorrect attachment of the load must be impossible

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There are already numerous solutions to accomplish the above Conditions have been proposed, a large number of which meet the above requirements, for example by means of a safety tongue Fulfills. However, care must be taken that the attachment of the safety devices does not reduce the strength of the hook on the Attachment point reduced.

The invention proposes a new embodiment of such hooks with safety locking, which actually the The above conditions are sufficient, but also has the advantage that the loaded hook behaves like a ring.

For this we ^ the hook according to the invention with automatic security © locking essentially formed by an actual hook, which has approximately the shape of a U, and through a part which is in the shape of a duck's bill and forms a locking member provided with a handle which is pivotable about the axis of the shackle for attaching the hook and has an axis offset to the side of the handle, around which the fork-shaped end of one leg of the actual hook can be pivoted, the other of which is somewhat relative to the first '' diverging leg ends in a flattened part, which contains an elongated hole into which the front end of the locking member automatically under the action of the load occurs, so that the half-Hing forming hook behaves in the closed state like a chain link, which one offers absolute security against any risk of accidental unhooking of the suspended load.

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The invention is described below with reference to the drawing explained by way of example.

! ig. Fig. 1 is a side view of the ring-shaped according to the invention

Safety hook β
! ig. 2 is a section along the line II-II of FIG.

The annular hook with automatic safety lock is an actual H _a ken 1 is formed, which is about the! Orm of a U, with one leg in a fork 2 expires while the other somewhat diverging leg terminated by a flattened part 3 with a slot 4 wirdo Part 5 in the form of a duck's bill forms the locking link with a handle 6. This part 5 and the round iron forming the hook are made of forged stable »

The part 5 has a lug 7 with a hole for attachment on the axis 8 of the shackle 9 for attachment to the cable of the hoist, wherein a second hole 10 is provided, which offset from the hole of the projection 7 in the direction of the handle is and serves to accommodate the axis 11, around which the Hook 1 is pivotable. The tapered front end 12 of part 5 can engage in the angular hole 4 of the handle of the hook.

By lifting the handle 6 of the bar 5, the front end 12 is removed from the elongated hole 4, so that the load on the hook 1 can be attached or detached from it. When the Yorder end is reinserted into the elongated hole, the spreads out along the line II-II exerted tension on the axis 11 and on

the point of contact of the front end 12 with the upper S. of the elongated hole 4 is the opposite of the two lever arms a and b. The heavier the load, the stronger the hook will be and the Riegel.5 formed ring closed, whereby an unconditional Security against accidental unhooking by prying the front end of the hook on the upper end of the free leg of the U-shaped hook is achieved.

The above training thus offers at the same time an unconditional guarantee against accidental unhooking of the load, a simple structure ensuring the required strong training, particularly simple handling and an automatic safety effect, an incorrect attachment of the load is impossible. After all, the actual ^ -akeia behaves like a ring under load, which is known to be desirable in the case of heavy loads, since this avoids the deformations caused by compound loads, as occurs with the usual hooks, whereby an accidental opening of the bolt is completely excluded.

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Claims (1)

Claim to protection Ring-shaped hook with automatic safety lock for lifting equipment, characterized by an actual hook (1) in the form of a U and a Locking member forming part (5) in ^ orm of a duck's bill with a handle (6) which can be pivoted about the axis (8) of the shackle (9) for attachment to the cable and has an axis (10) which is displaced towards the side of the handle (6) with respect to its pivot axis, and about which the fork-shaped end (2) of one leg of the actual hook (1) is pivotable, the other of which is pivotable relative to the first slightly diverging leg in a flattened part (3) with an oblong hole (4) runs out into which under the action the load automatically the front end (12) of the locking member; (5) occurs.