DE9416219U1 - Coax segment wipers - Google Patents

Description

FORDER TECHNIK GmbH

Company RIELA Fördertechnik GmbH Münsterstr.73, D-48469 Riesenbeck

" Coaxial segment stripper "

The innovation relates to a scraper device for cleaning conveyor belts of adhering conveyed material, in which the scraper segments (2) are located directly below the natural discharge parabola of the conveyed material on the deflection pulley (11) and can give way in the event of unevenness in the conveyor belt or overload.

Scraper devices of this type have already proven themselves to be extremely effective in terms of cleaning performance and space requirements at transfer points.

However, engagement positions of the scraper segments (2) of conventional scrapers and wear of these beyond a critical point have often led to damage to the conveyor belt in the past.

The innovation is based on the task of designing a scraper device of the type described above in such a way that adjustment work on the scraper device, even if carried out incorrectly, cannot lead to a change in the engagement position of the scraper segments (2) and thus to a risk of damage to the conveyor belt (12).

The function of a common zero stop (10) should also not be impaired by assigning different stripping pressures to individual stripping segments (2).

Furthermore, in addition to the common zero stop (10), an additional possibility is to be created to protect the conveyor belt (12) from damage caused by penetrating, excessively worn scraper segments (2).

In addition, the wear of the scraper segments (2) must be visualized to the conveyor belt operator at an early stage.

This problem underlying the innovation is solved by the teaching of the main claim and the subclaims.

In other words, the innovation proposes a stripping device that transfers the stripping pressure required for belt cleaning through torsion spring elements (4) arranged next to one another, coaxially in a hollow profile support (5) displaced on both sides of the stripper holders (8), via the lever arms (3) to the stripping segments (2), which in turn can be equipped with a wide variety of scraper strips (1) corresponding to the wear criteria of the material being conveyed.

RIEIfI Fördertechnik · Münsterstraße 73 _: &Oacgr;_&Ggr; 4446ßiesenbeqk -Phone 05454-7025 · Fax 05454-1441

FORDERTECHNIK GmbH

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The strength of the stripping pressure is achieved by rotating the hollow profile carrier (5) around its longitudinal axis by means of a pull lever (7).

Since each scraper segment (2) is equipped with its own torsion spring element (4), it can, on the one hand, give way in the event of a local overload or unevenness in the conveyor belt without the position of neighboring scraper segments (2) being changed. On the other hand, by screwing the lever arms (3) to the torsion spring elements (4) at an offset angle, it is possible to assign each scraper segment (2) its own individual scraper pressure, which is used, for example, in the event of varying levels of wear on the scraper segments (2).

To prevent the penetration of material into the hollow profile support (5), guide aprons (13) are attached to both sides of the lever arms (3).

Damage to the conveyor belt caused by excessively worn scraper segments (2) is primarily prevented by a common zero stop (10) which is attached to both sides of the scraper mounts (8) and limits the deflection of all lever arms (3) in the direction of the material being conveyed beyond a critical point.

A novel feature is the coaxial arrangement of the torsion spring elements (4) in a hollow profile carrier (5) that is open on the longitudinal side in order to prevent a change in the engagement position of the stripping segments when the stripping pressure is adjusted by rotating the hollow profile carrier (5).

The position of the torsion spring elements (4) is fixed by individual clamping plates (6), which enables easy dismantling of individual stripping units.

A novel feature is the angle-adjustable screw connection of the lever arms (3), concentric with the longitudinal axes of the hollow profile support (5) and those of the torsion spring elements (4), whereby the engagement position of the stripping segments (2) is maintained even if different stripping pressures are assigned to each of them.

What is new is that the function of a common zero stop (10) is retained without restriction even if different pressures are assigned to individual stripping segments (2).

This was also achieved by the coaxial arrangement of the hollow profile support (5), the torsion spring elements (4) and the screwing of the lever arms (3) to the torsion spring elements (4), whereby the individual lever arms (3) run parallel to one another with the same wear width of the stripping segments (2).

A common zero stop (10) can limit the deflection of the lever arms (3) on a line in order to achieve the same wear limit for all scraper segments (2).

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RIELD

Conveyor technology · Münsterstraße 73 · D*-*444J3 Rigsenbeok-Telephone·05454-7025 · Fax 05454-1441

RIEIf)

FORDER TECHNIK GmbH

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A new feature is a "wear indicator" (9) in the form of a contact block, which is installed directly below the scraper bar (1) and which, when the scraper segment (2) is worn, rests against the conveyor belt (12) over a large area, thereby delaying further wear of the scraper segments (2) up to the lever arm (3) and the resulting damage to the conveyor belt (12).

Since this "wear indicator" (9) is narrower than the scraper bar (1), strips of contaminants remain on the conveyor belt (12) to the side of the "wear indicator" (9), which allow the conveyor belt operator to visualize the wear of the scraper segments (2).

RIEIfI conveyor technology · Münsterstraße 73 ·:D'-i4;446 Rtes^pbe'dk

05454-7025 · Fax 05454-1441

Figure 1 Figure 2 Figure 3 Figure 4

Coax - segment scraper in section ·· ^; Coax - segment scraper in view with partial sections Coax - segment scraper with worn scraper segment Coax - segment scraper with different scraper pressure on 2 scraper segments

List of reference symbols 1 Scraper bar 2 Scraper segment 3 Lever arm 4 Torsion spring element 5 Hollow profile beams 6 Clamping plate 7 Pull lever 8th Scraper holder 9 Wear detector 10 Common zero stop 11 Deflection drum 12 Conveyor belt 13 Guide aprons

Claims (1)

Company RIELA Fördertechnik GmbH Münsterstr.73, D-48469 Riesenbeck " Koas- Segmentabstreifer "Protection claims 1.) Coaxial segment scraper for belt cleaning on conveyor belts on deflection pulleys (11) characterized by the coaxial arrangement of the hollow profile support (5) and the torsion spring elements (4). 1.1) Coaxial segment stripper according to claim 1, characterized in that the coaxial arrangement of the hollow profile carrier (5) and the torsion spring elements (4) ensures a constant engagement division of all stripping segments (2) in terms of position and angle with variable stripping pressure of the individual stripping segments (2). 1.2) Coaxial segment stripper according to claim 1 to 1.1, characterized in that the coaxial arrangement of the hollow profile support (5) and the torsion spring elements (4) ensures the function of the common zero stop (10) with variable stripping pressure of the stripping segments (2). 1.3) Coaxial segment stripper according to claim 1 to 1.2, characterized in that a "wear indicator" (9) mounted below the scraper bar (1) visualizes the wear of the scraper segments (2) due to residues of conveyed material on the belt. 1.4) Coaxial segment stripper according to claim 1 to 1.3, characterized in that by applying the wear indicator (9) over a large area to the conveyor belt, the wear rate of the scraper segments (2) is reduced to such an extent that additional time is created for maintenance work. -2- RIEtn Fördertechnik·Münsterstraße73· EP444.6Ri§sepTDeök _: -T<äefo^05454-7025· Fax05454-1441