FI58316B - BAERREM FOER LYFTANORDNING - Google Patents

Description

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Patent- och regiftentyrtisan AmMcm uthgd och utUkrifun publlcaratf 30.09.80 (32) (33) (31) Pyydetty «tuolk · *» * - Begird prlorltet 10.o8.76

Federal Republic of Germany-Förbundsrepubliken Tyskland (DE) P 2635879.2-22 (71) r, Hanf-Wolf "Wolf & Co., Stapenhorststr. 60, D-U800 Bielefeld 1,

Federal Republic of Germany-Förbundsrepubliken Tyskland (DE) (72) Gustav Horst Wolf, Giitersloh, Fritz Singenstroth, Gutersloh,

Federal Republic of Germany-Förbundsrepubliken Tyskland (DE) (7 * 0 Berggren Oy Ab (5 ^) Lifting strap - Bärrem för lyftanordning

The invention relates to a carrying strap for a lifting device, which consists of a hollow or double-sided textile product with an insert.

Such a woven textile carrying strap is known in the art (DT publication 1 781 347). The fabric of this carrier belt is relatively loosely woven. When a load is lifted by such a carrying strap, it undergoes stretching, which also causes oscillations, so that such a carrying strap does not allow the load to move very precisely.

In addition, a belt is used for tying packages or the like (U.S. Pat. No. 3,475,264), which must have a certain resilience in order to be securely attached to the package after tightening. The strap is made of plastic with limited elasticity and is reinforced with fiberglass. The fiberglass yarns settle in a sinusoidal shape when unloaded and are in a stretched position under normal operating load. The elasticity of the plastic material is so limited that although it allows the stretched position of the fiberglass yarns, in the stretched position of the reinforcements it is used up.

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In addition to the fact that loads cannot be lifted or moved by such belts without oscillations, they cannot be seen from the outside by the incipient rupture of the reinforcements. In these belt structures, a sudden rupture of the entire cross-section occurs.

The object of the invention is to further develop the carrying strap of lifting devices of the type mentioned at the beginning, so that it provides greater certainty so that damage can be detected during use, does not have to be stopped immediately and can be wound on small diameter drums due to its longitudinal flexibility.

According to the invention, this object is achieved in that longitudinally parallel metal wires, metal braids, metal ropes or high-strength fiber bundles are arranged in the unconnected spaces of the hollow or double-sided product and in that the hollow or double-sided product consists of dense fabric, knit or braid.

With the carrier belt according to the invention, the load can be lifted and transported without fluctuations in the carrier belt, which make it impossible to transport the load in a controlled manner and lower it to the desired destination.

The structure of the carrying strap according to the invention is such that even a clean textile part can support the permissible load with multiple certainty. If one or more metal inserts break due to overload, the lifting device can be continued for the time being. The rupture of the metal appendages, which has begun or has been going on for some time, can be easily detected from outside the carrier belt and monitored.

The double textile product surrounding the metal inserts consists of a dense fabric, knit or braid, so that the metal inserts or very strong bundles of fibers cannot be squeezed through it when the carrier belt is wound on the drum.

In addition, planar textile structures can be made into a braid, in which case braided yarns acting as binding yarns are drawn through the double fabric formed by the hollow braid.

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The planar textile structures can also be connected to each other by sewn binder yarns, whereby the stitches are arranged between two yarns, a bundle of fibers, a braid, a rope, etc., located in the inner part of the carrying strap.

The drawings show embodiments of the invention, which are explained in more detail below. In the drawings Fig. 1 is a perspective view of a part of the carrying strap, Fig. 2 shows a cross-section along the line II-II in Fig. 1, Fig. 3 shows a longitudinal section of the carrying strap according to Fig. 1, Fig. 4 shows a top view longitudinal meandering yarns or the like, Fig. 6 shows a cross-section of the carrying strap corresponding to Fig. 5, and Figs. 7 and 8 show cross-sections of the modified carrying straps.

The carrier belt 1 shown in Fig. 1 consists of two planar textile structures 2, 3, which are connected to each other by binding threads 4, 5 from the edge and the surface area.

Longitudinal yarns, bundles of fibers, braids or ropes 7 are arranged in the spaces 6 of the hollow or double-sided product without bonds.

It can be seen from Figures 4, 5 and 6 that the yarns, braids, ropes 8, etc. can also be meandering. In this case, the carrying strap is particularly elastic in the longitudinal direction.

As shown in Fig. 7, bundles formed by very strong, e.g. carbon, boron or aramid fibers, can also be arranged in the intermediate spaces 6 of the hollow or double-sided product. These fibers are indicated in Figure 7 by reference numeral 9.

Claims (8)

A carrying strap for a lifting device, which consists of a hollow or double-sided textile product with an insert, characterized in that longitudinally parallel metal wires, metal braids, metal ropes (7, 8) are arranged in the intermediate spaces (6) of the hollow or double-sided product. 9) or very strong bundles of fibers and that the hollow or double-sided product consists of dense fabric, knit or braid. Carrying strap according to Claim 1, characterized in that textile bonding warps (5) are arranged between two adjacent yarns, braids, ropes or high-strength bundles of fibers. Carrying strap according to Claim 1, characterized in that the textile braiding structures (2, 3) are connected to one another by sewn binder yarns, the stitches being arranged between two yarns, braids, ropes or bundles of fibers located inside the carrying strap. 5 5831 6 Carrying strap according to Claim 1, characterized in that the wires, braids, ropes or bundles are made as flat, oval or round elements. 4,58316 Fig. 8 shows a carrying strap in which a plurality of straight or meandering yarns, braids, ropes or the like are arranged in one or more layers in the intermediate spaces 6 of a double-sided or hollow product. Multilayer yarns, braids, ropes, etc. can be woven together as meandering or straight. The planar textile structures 2, 3 are preferably made of dense fabric, knit or braid, so that the metal yarns, braids, ropes or bundles of fibers placed in the intermediate spaces 6 cannot be squeezed through it when the carrier belt is wound on the drum. To prevent the carrying strap from twisting, braids or ropes arranged side by side in a hollow or double-sided product can be made alternately right-handed (Z) and left-handed (S). Yarns, braids, ropes or bundles can also be made into flat, oval or round elements and fit into the interior of a hollow or double-sided product. Carrying strap according to one of Claims 1 to 4, characterized in that the braids and ropes are made alternately with an S and a Z thread and are arranged side by side in a hollow or double-sided product. Carrying strap according to one of Claims 1 to 5, characterized in that the yarns, braids, ropes or fiber bundles are meandering. Carrying strap according to Claim 1, characterized in that a plurality of straight or meandering yarns, braids, ropes or bundles of fibers are arranged in one or more layers in the unconnected spaces. Carrying strap according to Claim 7, characterized in that the multilayer yarns, braids, ropes or fiber bundles are woven together in meandering or straight lines.