Conveyors: power-driven – Conveyor section – Endless conveyor
Patent
1984-08-01
1986-10-07
Valenza, Joseph E.
Conveyors: power-driven
Conveyor section
Endless conveyor
198833, 198845, B65G 1560
Patent
active
046154345
DESCRIPTION:
BRIEF SUMMARY
CROSS REFERENCE TO RELATED APPLICATION
The present application is a national phase application corresponding to the International Application PCT/EP82/00258 filed Dec. 8, 1982.
FIELD OF THE INVENTION
The invention relates to a conveying equipment with an endless conveyor belt of rubber or of a similar material, which is guided over carrying pulleys via endless running elements provided in its marginal areas.
OBJECT OF THE INVENTION
It is the object of the invention to provide a conveyor where endless running elements have to be replaced only after very extended periods of time and wherein the replacement of the running elements or of sections thereof can be carried out with reduced time consumption.
SUMMARY OF THE INVENTION
This object is attained in accordance with the invention in that each running element consists of carrying elements attached to the conveyor belt and of at least one cable whereby the cable presents no rigid connection with the conveyor belt or with the carrying element attached to the conveyor belt.
The traction power required for driving the conveyor belt, in the case of the conveying equipment according to the invention, is transmitted mainly through the conveyor belt itself or through tension-resistant inserts imbedded in it, such as cables, cord, textures or the like.
Since the running elements do not have to transmit traction force, the cable of the running elements requires only a reduced cross section and consequently the rest of the cross section serves only for abrasion-resistance, so that the material of the running elements can be selected correspondingly in an optimal way. Consequently, the running elements have a large wear section and besides are subject only to reduce wear due to optimal material selection, so that the running elements last for a very long time and therefore have to be replaced only at relatively long time intervals. The replacement of a running element or of a portion thereof is facilitated by the fact that the running element or the portion of the running element resting on the carrying pulley is not firmly connected to the conveyor belt. Furthermore, only a minor effort is required to make the new running elements endless, i.e. to join the ends of the new section of the running element to the remaining part of the running element, because the connection area or connection areas essentially need only be compression-resistant and not traction-resistant. Another advantage of the invention consists in that the running elements can be suited to any desired conveyor belt.
Advantageously, each cable is provided with a surrounding casing. Each running element can have two cables. The return disks for the cable are mounted in the area of the driving and return pulley, respectively, of the conveyor belt. Each cable may be divided into several endless sections independent with regard to each other, whereby each section has its separate return disks.
Both cables can be connected with the conveyor belt via mounting supports bolted to the conveyor belt. The mounting supports have a round cross section and can be rotatably attached to the conveyor belt.
The cables can be attached to the conveyor belt with the aid of hooks, whereby the marginal area of the conveyor belt has holes and the hooks engage therein. The drive or return pulley for the conveyor belt has a recess of shape and dimensions selected to offer enough room to the running element. Furthermore, a driving traction force can be exerted on the conveyor belt as well as on the cables carrying the conveyor belt.
The latter enables a forced guidance of the conveyor belt with very reduced losses due to friction. Such a forced guidance of the conveyor belt is required for instance in the case of adjustments to differences in elevation and in the case of adjustments to curves.
BRIEF DESCRIPTION OF THE DRAWING
Several embodiments of the invention are represented in the drawing, in which:
FIG. 1 is a cross-sectional view of a portion of the conveyor showing the right-hand marginal area of the conveyor
REFERENCES:
patent: 826312 (1906-07-01), Catlin
patent: 2751065 (1956-06-01), Thomson
patent: 2838164 (1958-06-01), Duncan
patent: 3381799 (1968-05-01), Havelka
patent: 3637091 (1972-01-01), Mickelson
patent: 3869574 (1975-03-01), Kume
patent: 4249653 (1981-02-01), Kufferath-Kassner
Dubno Herbert
Holmes Jonathan D.
Ross Karl F.
Valenza Joseph E.
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