DE7826578U1 - Roller conveyor with upwardly open U-shaped supports - Google Patents

Description

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New description introduction, replaces the previous pages 2 to the end of page 4

/ Roller conveyor with U-shaped supports open at the top

The invention relates to a roller conveyor track with a U-shaped support that is open at the top and rollers arranged therein that are provided with IQ axles.

The French publication number 23 66 190 has disclosed a roller conveyor of the type mentioned above, in which smooth rollers are pressed into a U-shaped support that is open at the top by means of a snap fastener. Roller conveyors of this type cannot be used to transport freight or in foundries to transport cast parts, as mutual alignment of these rollers with snap fasteners is not possible on conveyors.

DE-AS 1 213 349 has disclosed a roller conveyor in which individual rollers are arranged between L-shaped legs and the rollers, which are provided with axles, are supported in guides. Aligning and tensioning these rollers, if they are to be driven, is not possible. As stated, however, in the case of roller conveyors, in particular, special effort is required to align such roller conveyors when handling freight when freight is to be transported over longer distances and when a smooth transition to another conveyor must take place at transfer points. In addition, each "flange roller rail" must be aligned within itself, i.e. from flange roller to flange roller, as well as to the other "flange roller rail", in order to ensure smooth

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Transport of damaged goods to be conveyed is to be avoided. Furthermore, with such an alignment, which can only be carried out with a very rough tolerance, point-like overloads occur between the underside of the goods to be conveyed and the associated flanged roller that supports this goods, which can lead to immediate wear and sudden destruction of the flanged roller, which is associated with a failure of the entire roller conveyor.

In addition, in such roller conveyors, if several such sections are arranged one behind the other, either all or at least a certain \

Percentage of the flanged rollers can be driven, which is generally done via a chain drive. Both the susceptibility of these drives to failure due to overloading and the risk of injury to operating personnel from such roller conveyors are well known. Up to now, no efforts have been made with regard to safety and, with regard to maintenance, it has been accepted that considerable downtime occurs when, in the event of a flanged roller or chain drive failure, the entire roller conveyor has to be re-measured in order to achieve precise alignment again. Based on the state of the art mentioned at the beginning, the invention is based on the task of further developing a roller conveyor with a U-shaped support open at the top and rollers arranged in it in such a way that it is possible to carry out chain tensioning without the risk of injury from drive elements such as chains and sprockets, without having to readjust the entire roller conveyor.

This object is achieved according to the invention by the characterizing features of claim 1. This ensures that the running surfaces of the flanged rollers in

remain at one level, even if a necessary I

tensioning of drive chains causes a displacement of the flange rollers against each other in the conveying direction. In addition, the increased

U-shaped support according to the invention also ensures that

the alignment of the wheel flanges is clearly maintained and thus tilting of the individual wheel flange rollers is

is clearly avoided, because the mechanical

IQ machining means that the axes of the flanged rollers are aligned at right angles to the U-shaped support. Another significant advantage is that the machined leg face is suitable for accommodating a cover device for the entire "roller conveyor rail".

An embodiment of the invention is protected in claim 2. Due to the arrangement of movable supports on the U-shaped support according to the invention, the roller conveyor track can be aligned evenly according to the machined leg ends even on completely uneven ground and even with a twisted support. This ensures that all flanged rollers are evenly loaded, especially when carrying heavy loads.

A still further embodiment of the invention is described in _t

Claim 3 is protected. In this embodiment of the invention, even if the flange rollers are displaced in or against the conveying direction, which is done by tensioning or re-tensioning the chains driving the flange rollers, the original alignment in relation to the flange and in relation to the running surfaces is not changed, so that a roller conveyor running in one plane can be constructed both in the conveying direction and transversely to it.

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If cover plates with cutouts for the flanged rollers are fitted to the front sides of the legs, a U-shaped channel is created which safely covers the chains and sprockets during operation of the system, so that no accidents can occur due to the drive units.

The original description follows from page 10 onwards.

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The invention is explained in more detail in the following drawing.

Show it:

_Fig . 1 shows a roller conveyor track with a flanged roller produced by the method according to the invention.

Fig. 2 is a view of a roller conveyor according to the invention in cooperation with other roller conveyors.

The same reference numerals are used in the figures for identical objects. According to Fig. 1, a U-shaped support 1 is milled on its inner sides 2, 3 of the legs along its entire length on surfaces 5, 6, so that a flange roller axis 4 can be moved as desired along the U-shaped support. At the same time, the front sides 7, 8 of the legs of the U-shaped support 1 are also milled flat along the entire length of the support. This creates a guide arrangement that works in two planes and in which each flange roller axis 4 can be guided, thanks to radially and axially extending flats 9, 10 on the flange roller axis 4. Since the tolerance of the radial and axial flats is kept within very narrow limits, this ensures that all rollers mounted on this support are clearly aligned with respect to the flange surface 11 and each roller surface 12.

Drive wheels 13, 14 are rotatably mounted on the flange roller axle 4 and are connected to a rotatably mounted flange roller 15. If, for example, the flange roller 15 is driven by a chain (not shown) which is connected between a motor (not shown) and the drive wheel 13 and another flange roller is driven by the chain (not shown) looped over the drive wheel 14, it is necessary to loosen the axle holder 1B, 17 in order to tension the chains in order to be able to move the flange roller axle 4 along the surfaces 5, 6 and 7, 8. Due to the mechanical processing of these surfaces and due to the

precisely tolerated machining of the surfaces 9, 10 on the

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Flange roller axle 4, even when moved, no change is caused in the height of the roller surface 12 or in the string position of the flange surface 11. This eliminates the previously necessary new adjustment.

j As shown in Fig. 2, the axle holders 16 and 17

Elongated holes n^fir, 19, which _are arranged parallel to the leg end face 7 or 8.

At the same time, a cover 20 is supported on the SchenkBlstimssite 7, &thgr;, which, as shown in section in Fig. 1,

covers the entire drive and only exposes the part of the flanged roller 15 required for the transport of freight.

Fig. 2 shows the interaction of several U-shaped supports 1 with the help of adjustable elements 22, 23. The U-shaped support 1 has a pair of adjustable elements 22, 23 so that the leg end faces 7 and 6 of all U-shaped supports 1 can be aligned to a level. As can be seen from Fig. 2, the foundation can have any surface; it would also be conceivable for the bottom surface 24 of the U-shaped supports 1 to have any contour, which is particularly the case with rolled supports.

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Claims (3)

no ·· · a n««t &bull; II) · · r · *<\t 8.100 D Roller conveyor with U-shaped supports open at the top Protection claims 1. Roller conveyor with a U-shaped support open at the top and rollers provided with axles arranged therein, characterized in that a) the rollers are designed as flanged rollers b) the axles of the flanged rollers have radially and axially extending flat surfaces at their ends ·" exhibit, c) the U-shaped support is milled flat on its inner sides and front sides of the legs over its entire length, so that a guide arrangement acting in two planes for the track 2" crown roller axles are created d) axle holders are provided for the flanged roller axles, with slots in the axles parallel to the horizontal of the U-shaped support. holders are attached.
25 2. Roller conveyor according to claim 1, characterized in that the U-shaped support has movable support elements for the alignment of the roller conveyor are provided.
30 3. Roller conveyor track according to claim 1 or 2, characterized in that the roller conveyor track is composed of several U-shaped supports with flanged rollers.