Conveyors: power-driven – Conveyor section – Endless conveyor
Patent
1980-12-20
1983-01-04
Love, John J.
Conveyors: power-driven
Conveyor section
Endless conveyor
192 487, 192 71, 192 93C, 198817, B65G 2300
Patent
active
043669000
DESCRIPTION:
BRIEF SUMMARY
The present invention relates to a belt conveyor.
Such a belt conveyor, which is used for numerous purposes in the building trade, for instance, generally has an endless belt of a certain width corresponding to the articles to be conveyed. It runs around a number of rollers journalled in two robust side pieces. Due to this construction the size and weight of the conveyor often does not correspond to the weight of the goods to be conveyed. This is particularly disadvantageous if the conveyor is to be used in several different working sites, as in the building industry, for instance.
A considerably lighter construction is achieved according to the present invention since the belt is divided into two parallel belts running one on each side of a central body. It may thus be assumed that the conveyor will be sufficiently steady if it is capable of carrying the load for which it is intended. The weight of the conveyor can thus be kept so low that it can easily be moved and erected ready for work by one or at most two men.
In the drawings:
FIG. 1 is a side schematic elevation broken away in part showing a conveyor according to the invention;
FIG. 2 is a top plan view partly in section and with parts broken away of the conveyor;
FIG. 3 is a sectional view of a coupling shown in FIG. 2;
FIG. 4 is an electrical circuit schematic for the conveyor; and
FIG. 5 is a modification of the support rollers shown in FIG. 2.
FIG. 1 shows the conveyor seen from the side and for the sake of clarity the figure has been broken apart and shortened. The Figure thus falls into three sections, namely the ends 1 and 3 and the central part 2. Within these sections the various components have been designated by index A, B, C and so on. The conveyor is built up around the central frame or body I which consists of three parts which can be pushed into each other telescopically in order to facilitate transportation from one erection site to another. In extended position the three parts are locked to each other by means of pins or bolts 2B.
As can also be seen in FIG. 2, the two parallel belts 1E pass over guide rollers 1F and 3L at the ends of the conveyor. In order to tension the belts the guide roller 1F, which is not driven, is arranged on a bracket 1G located on a tube 1B passing into the body I. By means of a sindle 1D with screw-threading which screws into a nut 1C in the body, the bracket 1G can be moved in either direction. Other brackets 2C with support rollers 2A for the upper sections of the belts are provided at suitable intervals along the body. A number of pushers 3H are also provided on the belts 1E in order to push the load units along. These pushers may be in the form of extremely simple rubber studs or the like. The belts may consist of strong, relatively narrow strips of nylon, for instance, having a width of five to ten centimeters.
The belts are driven by the guide rollers 3L at the righthand end of FIG. 1. These guide rollers are in turn driven by a motor 3G with suitable gear ratio. The guide rollers are located on the driving shaft 3K from the motor but can turn freely on this on ball-bearings 3M. They are driven individually by one of the clutches 3B in a clutch coupling, the other part of which is in a cylindrical core 3A on the guide roller 3L. The principle can be seen more clearly in FIG. 3 which shows an axial view of the coupling.
As is clear from FIGS. 2 and 3 the core 3A is cut to form a number of teeth between which the dogs 3B can engage. The dogs are located on a transverse arm on the drive shaft 3K. Furthermore, the dogs 3B are placed in relation to each other and in relation to the pitch of the teeth in the core 3A in such a way that no more than one of the dogs can engage at a time between these teeth. A spring 3J between the dogs presses them apart and in between the teeth.
The clutch couplings are controlled by double-action electro-magnet 3C, circular discs 3D being provided at the ends of its armature. When the armature is driven in one direction or the other, one of these discs will actuate nibs on
REFERENCES:
patent: 2164535 (1939-07-01), McBride
patent: 2203573 (1940-06-01), Krause
patent: 2920751 (1960-01-01), Krupp et al.
patent: 2932381 (1960-04-01), Kihnilutt et al.
patent: 2965217 (1960-12-01), Dommann
patent: 3552546 (1971-01-01), Rath
patent: 3757924 (1973-09-01), Yakubek
Love John J.
Watts Douglas D.
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