DE8007993U1 - FORK-SHAPED SUPPORT CONSTRUCTION - Google Patents

Description

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Henkelstrasse 67 MPMk ¹ PI WCZaL

4000 Düsseldorf, March 20, 1980 ^ patents

Boron / C

e Registration D 6133

"Fork-shaped support structure"

The invention relates to a fork-shaped support structure with in the area of the connecting fork prongs Fork bridge attached, approximately in the middle of the fork extending support arm for attaching the load hook a hoist or the like.

The supporting structure is thus somewhat in contrast to the Case designed to hang freely with the prongs of a forklift truck. It is used primarily for transport and emptying flexible bulk containers with an individual weight of the order of magnitude up to about 1000 kg. The containers can be of the supporting structure by inserting the fork prongs in corresponding z. B. added loops provided on top of the container will.

Often the containers or containers have a closure in the manner of a hose valve on the underside and must use lifting equipment from the

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Patent application HENKEL KGaA | D 6133 2 ZR-FE / Patents S;

called type to be lifted above the feed openings before the valve can be opened. If the fork-shaped, freely hanging harness used does not have counterweights, depending on the weight or degree of filling of the attached container off-center Load distributions result, so that in a hoist suspended supporting structure can incline. The hanging straps of the container are in such cases Unevenly loaded and experience has shown that most of the textile materials are overstressed and tear. at The use of balancing weights on such constructions increases the construction effort and makes the device more unwieldy.

The invention is based on the object of the fork-shaped, freely hanging support structure mentioned at the beginning without the aid of counterweights to constructively train so that the fork prongs are independent of the The weight of an attached container is always kept in a prescribed, in particular approximately horizontal, position will. The solution according to the invention consists in the fork-shaped support structure with itself approximately in the center of the fork extending, for attaching the load hook or the like serving support arm in that at the end of the support arm provided for the application of the load-bearing capacity, a designed for hanging in the load hook, around an approximately horizontal axis against a spring force comparable to the maximum load to be absorbed an approximately horizontal in an approximately vertical end position pivotable lever is attached. Preferably a

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Patent application "HENKELKGaA

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only support arm that engages centrally on the fork bridge intended.

The invention thus essentially relates to a fork-shaped steel structure with a central support arm, which is to be hung in the load hook of a hoist using a swiveling lever. The construction is advantageous designed so that the pivot lever by a linkage and one or more compression or tension springs in the unloaded state in its one end position and when loaded

/ | 0 load or increasing degree of filling from the one end position pivots around a fulcrum to another end position. The other end position corresponds to the maximum load. The pivot lever is preferably essentially in the minimally loaded or unloaded end position in the horizontal, while it is about its approximately horizontally extending lever axis at maximum load should be able to pivot approximately into the vertical position.

The invention thus achieves that the to the lever Attacking load capacity with increasing load relative to the support arm and thus to the entire support structure is shifted so that despite the wandering with the mass of the container. Center of gravity of the fork and container existing, free-hanging Gesaratsystem the fork is held horizontally. So you can say that the force application point through the lever according to the invention is adjusted relative to the system center of gravity so that the fork prongs are independent of the size of the load - in particular even if the load changes - always stay in a horizontal position.

Patent application HENKEL KGaA

D 6133 * ZR-FE / patents

Further details of the invention are explained on the basis of the schematic representation of an exemplary embodiment. Show it:

Pig. 1 a known supporting structure with a suspended Container; and

Pig. 2 shows a perspective drawing of the principle of the arrangement according to the invention.

According to Pig. 1 is a flexible container or container 1 with the help of loops 2 on the fork prongs 3 a Suspended support structure. The fork tines 3 are connected to one another via a fork bridge 4, whereby extends from the fork bridge from a support structure of support arms 5 in the area above the center of the fork. At the end of the support arms provided for the application of the load-bearing force, which is the one in the illustrated embodiment is again designed as a bridge, for example, the load hook 6 of a hoist engages. The corresponding The point of application of the hook 6 is essentially to be arranged so that the fork is at maximum load does not tilt to the horizontal. The hook 6 therefore engages almost exactly above the center.

Since supporting structures according to Pig. 1 for lifting loads of up to a thousand kilograms must be designed, is a correspondingly massive construction of the individual spars and the connection of Support arm 5 for fork prongs 3 required. This in turn creates a certain weight asymmetry in the supporting structure or the harness itself, d. H. Swivel in the unloaded or lightly loaded state

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Patent application HENKEL KGaA _D S ₁₅₃ J 5 ZR-FE / Patents

the tips of the fork prongs 3 upwards, while the fork bridge 4 is pulled downwards by its weight. To prevent the tabs 2 from slipping on the fork tines 3> corresponding risk of damage to the container 1 and / or difficult manageability of the overall arrangement avoid, counterweights can be attached to the supporting structure in this way; that the construction too without a suspended container is balanced in such a way that the forks 3 when hanging the arrangement in run roughly horizontally. Such counterweights are expensive to manufacture and to handle bothersome because of the weight and the bulkiness.

Fig. 2 shows the principle of a support structure according to the invention, in which the fork prongs 3 are roughly the same as in the device according to FIG. 1 via a fork bridge 4 with one another are connected to one unit. At the fork bridge now engages a single support arm 7, whose for the attack of the load capacity provided end piece 8 not directly but via a lever 9 with the Load hook 6 is connected.

The lever 9 according to the invention is about an approximately horizontal Shaft 10 pivotally mounted on the free end of the support arm 7 and against one with the maximum load to be absorbed roughly comparable spring force from an approximately horizontal end position at an angle W into an approximately vertical one Pivotable end position. In the horizontal end position, the lever 9 can, for example, approximately parallel to the plane ^ egg-fork tines 3 lie while he is in the vertical End position approximately perpendicular to the level of the fork prongs 3

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can stand. The spring force can be given by one or more tension or compression springs 10, which between one or the other arm of the lever 9 and the support arm 7 act.

In one embodiment, the lever 9 is rotatably arranged around the shaft 10 on the support arm 7. At full Container - for example, reference number 1 of Figure 1, the lever 9 rotates into the vertical position in which so the angle W can have the value of about 90 °.

In this pivoting end position of the lever 9, the springs • 11 are loaded to the maximum, for example stretched. To operate The springs 11 can have a special linkage and corresponding bolts for fixing the springs will. With decreasing weight of the suspended container, the springs 11 pull the lever 9 in the sense of a Reduction of the angle W back. By this relative movement of the force application point 12 of the lever 9 in relation on the area spanned by the fork prongs 3, it is achieved that the force always depends on the load engages approximately at the center of gravity of the overall system, in such a way that the device or the fork prongs 3 always remain in a horizontal position. By pivoting the lever 9 from the position with a large angle W in the position with a small angle W it is taken into account that the weight of the supporting structure when the filled container 1 is suspended itself plays a minimal role, while with the (almost) empty container 1 the weights of the supporting structure and containers can be of the same order of magnitude, so that the weight asymmetry the support structure is unfavorable without the suspension according to the invention, by inclining the fork prongs 3, would affect.

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Patent application HENKEL KGaA D 6133 9 ZR-FE / Patents List of reference symbols

1 = container

2 = tabs

3 = fork prongs 4 = fork bridge

5 = support arms

6 = load hook

7 = support arm

8 = end piece

9 = lever

'= Wave = spring = force application point

Claims (3)

• · t «II • · II) I. Patent application HENKEL KGaA ZR-FE / patents D 6133 7 "Fork-shaped support structure" Expectations Ί. Fork-shaped support structure with attached in the area of the fork bridge connecting the fork prongs, extending approximately into the middle of the fork support arm for attaching the load hook of a hoist or \ 'the like, characterized in that the for the ξ - The end (8) of the support arm intended to attack the load-bearing capacity? 10 ^ m an approximately horizontal axis (10) against one with the p. maximum load to be absorbed comparable spring force (11) is attached from an approximately horizontal in an approximately vertical end position pivotable lever (9). 2. Support structure according to claim 1, characterized in that that the pivoting of the lever (9) counteracting spring force (11) of a load to be suspended (1) is adapted so that the approximately vertical end position ι, the lever (9) of the maximum load and the approximately horizontal The end position corresponds to the minimum load or relief. 3. Support structure according to claim 1 or 2, characterized in that that the spring force (11) acting on one or the other lever arm with the help of a linkage Tension or compression springs (11), in particular by two springs, are formed. /8th t Il I Patent application HENKEL KGaA D 6133 9 ZR-FE / Patents Support structure according to one or more of the claims 1 to 3, characterized in that the force application point through the pivotable lever (9) is adjusted relative to the system focus so that the fork prongs (3) regardless of the size of the Load (1) - especially when the load changes - are always arranged approximately horizontally. Sd 230 03.02.80