DE3313969A1 - Tension belt, especially a flat belt or conveyor belt - Google Patents

Abstract

In the case of these belts having longitudinally-running steel cords as strength carriers, it is intended to form eyes at the belt ends by means of thin steel cords, which eyes enclose connecting pins and are vulcanised-in with their ends which are guided back in the region of the longitudinally-running steel cords parallel thereto in the belt body. These ends may be arranged between, but also underneath or above, or above and underneath the longitudinally-running steel cords and, at the same time, also form flat layers. Eye formations are thus achieved which have great strength but do not lead to a thickening of the belts at the ends.

Description

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Guinni-Jäger KU GmbH. £ Cie in 3ooo Hanover

Train ^ urt, esp. Flat belt or conveyor belt

The invention relates to a tension belt, but in particular to a flat belt or a conveyor belt a belt, which consists essentially of rubber or the like. As a longitudinal reinforcement several longitudinally extending Reinforcements, especially steel cables, and at its end one or more for receiving ' of a pen or the like. Serving eyelets.

With these belts there is a difficulty in forming with the eyelets whenever the longitudinal reinforcement supports have a comparatively large diameter; men and for this reason have only one rings flexural deformability. Under these conditions, it is not possible to use these strength reinforcers :: u Usen su bend, which of course could represent a simple technical solution.

The invention is essentially based on the object In belts of the above type, they must be formed in such a way that they are used with comparatively thick strength straps small ucen can be formed without having to accept thickening in the outer area.

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In order to achieve this object, according to the invention, the eyelets are essential to the reinforcement supports formed thinner reinforcement inserts, "their extending back into the belt body can be found in the area of the ends of the are vulcanized into the belt body.

For these reinforcement inserts, thin steel cables or high-strength plastic threads or -Geil used, which you can easily bend into a U-shape in order to be able to form the desired eyelets. the The legs of this U are then vulcanized into the belt body between the reinforcements - mostly thick steel cables, it goes without saying that the strength of the thick strength supports accordingly many thin ropes or the like must be used. So it may be necessary to use a thick steel cable to assign four or five thin ropes, but these offer the great advantage that small eyelets are selected without having to increase the belt or belt thickness in the eyelet area To achieve distribution of the thin reinforcing inserts, od in the eyelet area for receiving the pins. uses drilled rigid inserts that are fitted with a multitude of grooves into which the thin reinforcement inserts are then inserted. It thus becomes an orderly, precise one Laying and arrangement of the thin ropes od. Like. Allows, but at the same time also ensures that a pin is inserted and a desired eye diameter can be adhered to.

It is also important that the actual strength members with a thick diameter are used to form the aforementioned eyelets can all be cut to length with a straight cut. So it doesn't need a special one

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Preparation or, confection · the already difficult to handle Reinforcements.

Further details of the invention are based on the Drawing explained in which embodiments of the invention are shown.

Show it

1 shows an end section of a flat belt in plan view, specifically in a sectional illustration,

FIG. 2 shows the end section according to FIG. 1 in cross section,

3 shows the connection point of a flat belt or conveyor belt in a top view,

4 shows an insert for forming an eyelet in cross section _y

Fig. 5 shows an end section of a shoulder strap in plan view and

Fig. 6-9 © in a further embodiment.

The flat belt according to FIGS. 1 and 2 consists essentially of rubber; he has to reinforce his lengthways serving, parallel steel cables 1, which are arranged approximately in the neutral plane of the flat belt are. Three steel cables 1, which are firmly attached by vulcanization, thus form the longitudinal reinforcement; It goes without saying, however, that further steel cables, .1 in parallel and in one position can be located. All these steel cables 1 end at the same level or in one to Flat belt transverse plane (made by a severing cut). _ 4 _

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Around this flat belt with other construction elements in'b. but one flat belt end with the associated other To be able to connect the end, an eyelet is formed at the end, which has a transverse bore 2. In these Cross hole 2 can be a connecting pin, e.g. of the type '-. of a bolt 3 can be inserted to this e.g. a U-f. To be able to attach rmigen connecting body 4

In this way, on the one hand, a high connection strength can be achieved and on the other hand, there is no thickening at the end of the belt is required, thin steel cables 5 are used, which around an approximately tubular, rigid insert 6, e.g. are made of tough plastic. These inserts 6 have a multiplicity of circumferential grooves 7 to accommodate the thin steel cables 5. Each steel cable 5 is assigned a circumferential groove 7, namely as follows that the steel cables 5 are evenly distributed over the length of the inserts 6. The ends 8 of these steel cables 5 are in turn evenly distributed over the spaces 9 located between the steel cable 1 and approximately in the Arranged level in the belt body, which is determined by the steel cables 1.

It goes without saying that all parts 6, 5 and 1 are firmly embedded in the rubber and the connection between these Parts among each other are carried out exclusively through the rubber that surrounds them.

The one in Pig. 1 arrangement can be part of an arrangement according to Pig. 2 or apply analogously there, where ^K e then arises in connector which has nested rows of nozzles with a connecting pin.

According to Fig. 2, the free end of the belt or the like.

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still be passed with a protruding nose 1o, which can engage in a correspondingly shaped depression or recess of the other end in order to also bring about a form fit. These additional measures can seal the connection point or have other effects, but these precautions are preferably only desired in those applications in which two ends are z _o ß. are to be connected to each other by conveyor belts or flat belts.

The invention also allows the use of inserts 11 which are approximately teardrop-shaped in cross section, in order to achieve favorable stress on the steel cables 5 in the outer area. For these inserts 11 there is also the possibility of using approximately rectangular pins 13, which are to be arranged with their longer side surfaces in the direction of pull of the belts ₀

6 shows a partial plan view of a conveyor belt connection, which is not articulated and seamlessly interlocking end parts with corresponding rectangular projections and has correspondingly shaped recesses into which the projections engage.

Fig. 7 is a section along the line VII - VII of Fig. 6, FIG. 8 shows a section along the line VIII-VIII from FIG. 9, and FIG. 9 shows a section along the line IX-IX from FIG.

In contrast to the connections and loops according to FIG. 1 up to 5 no stakes are made here. JWlra rather only a rectangular pin in the form of a high-strength flat iron, which is also designated here with 13. Under With a thin rubber layer in between, the thinner steel ropes 5 are guided around this flat iron 13, to be precise close to close in such a way that the ends 8 are in approximately flat layers 15 above and below the steel cables 1

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are arranged. In order to produce the cross-sectional image which is favorable in terms of strength according to FIG. 7, a pin is used used, the wall thickness of which corresponds practically to the diameter of the steel cables 1.

From Pig. 6 it can also be seen that all steel cables 1 are parallel to the side edges of the pins ends and the projections at the Porderbandenden only contain sections of the thin steel cables 5 and the pins 13.

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Claims (1)

- jr- Expectations i. Essentially made of rubber and the like, tension belt, especially flat belts or conveyor belts, with parallel, longitudinal strength straps, especially steel cables, and one or more eyelets at one or both ends, with the linear eyelets serving to accommodate connecting pins , characterized in that the eyelets are formed by reinforcement inserts (5) that are considerably thinner and more flexible than the reinforcement elements, the ends (8) of which extend back into the belt body and are vulcanized into the belt body in the region of the ends of the reinforcement elements (1). - 2. Belt according to claim 1, characterized in that the reinforcing inserts (5) stiff inserts (6) enclose, which have a bore (2) for receiving the connecting pins and several grooves (7) for Have inserting the reinforcement inserts. 3. Belt according to claim 2, characterized in that the inserts (6) have an approximately teardrop-shaped Have cross-section. 4. Belt according to claim 1, characterized in that the connecting pins have an elongated cross section have, with the longer cross-sectional axis of these connecting pins in the longitudinal direction of the belt extends. ORIGINAL INSPECTED - ä - 5. Belt according to claim 1, characterized in that the returned ends (ϊ ^{:) are} approximately in the plane that is determined by the reinforcement (1). 6. Belt according to claim 1, characterized in that at the end of the belt one or mottled nose-like protrusions (io) are provided, which corresponding recesses at the other end of the belt (with which the first belt end is connected should be assigned). 7. Belt according to claim 1, characterized in that a Pestigkeitsräger (1) about three to six reinforcement inserts are assigned. 8. Belt according to claim 2, characterized in that a groove (7) is provided for each reinforcing insert (5) is. 9. Belt according to claim 1, 'characterized in that the reinforcement inserts (5) are evenly distributed over the length of the inserts. 1o. Belt according to Claim 1, characterized in that the reinforcing inserts (5) are laid in a substantially U-shape. _x - 9 -ORIGINAL INLSPECTED COPY 11. Belt according to claim 1, characterized in that the ends (8) are essentially in layers, esp. are arranged in level layers that are above and below the reinforcement supports (1) 12. Belt according to claim 1, characterized in that the height or wall thickness of the for insertion into the Eyelet serving connecting pins at least substantially corresponds to the diameter of the reinforcement (1). 13. Belt according to claim 1, 4 and 12, characterized in that ' that the reinforcement inserts (5), if necessary. A thin intermediate layer of rubber or the like. Apart from are immediately adjacent to the connecting pin. 14. Belt according to claim 1, characterized in that the ends (end faces) of the steel cables or reinforcements are arranged at an equal distance from the connecting pins. 15. Belt according to claim 1, characterized in that at the belt connection point the projections of one end of the belt seamlessly into the recesses of the other Engage the end of the belt (Fig. 6).