Conveyors: power-driven – Conveyor section – Flight means in conduit for lifting flowable solid material
Patent
1992-06-08
1994-06-07
Valenz, Joseph E.
Conveyors: power-driven
Conveyor section
Flight means in conduit for lifting flowable solid material
198731, 198733, B65G 1914
Patent
active
053181689
DESCRIPTION:
BRIEF SUMMARY
FIELD OF THE INVENTION
The invention pertains to a disc retarding conveyor.
BACKGROUND ART
The state of the art is that disc retarding conveyors move the carried, loose material by discs that are screwed or cast onto individual chain elements of the solid chain. Due to the meshing of the teeth into the diversion and drive stations of the individual chain elements, these disc retarding conveyors are very loud when in operation and have various other disadvantages. The disc retarding conveyor can be improved with a solid, smooth traction device, e.g., a steel cable. In this case, individual nodes and press-pieces are squashed onto the steel cable. Two half-dishes of one static plate, that have a common diameter surface, will be inverted over these press-pieces and screwed together. The static plates are driven by yokes cycling around a drive wheel; these yokes surround the traction rope and press against the surfaces of the static plates. High demands are placed on the uniformity of the distribution, so that the motive power is picked up and transferred uniformly over all static plates located in the cycle. Now, in case of a certain irregularity, the entire motive power will be transferred via only one static plate to the traction element, and acceleration jolts result. Therefore this type of disc retarding conveyor, which will only allow a small motive power, is susceptible to breaks in the wire cable, and is less suitable for control of the conveyor path.
Due to the use of additional, known tractive elements made of high-strength Aramid with a large alternating bending strength, the problem of fatigue breaks due to limited alternating bending strength of the steel cable tractive elements will indeed be eliminated, but the static plate mounting and [lack of] uniformity of the force application is not satisfactory.
SUMMARY OF THE INVENTION
Thus it is the task of this invention, by the use of, in particular, noncorrosive, preferably flexural-resistant traction elements, to create a disc retarding conveyor that does not have the stated disadvantages and that in addition, will allow a large force transfer. In addition, an essentially universal, versatile applicability, and also a simple assembly and interchangeability of the static plates is desirable.
BRIEF DESCRIPTION OF THE DRAWINGS
The figures show:
FIG. 1: A static plate, axial cross section;
FIG. 2: The same static plate, left-side view;
FIG. 3: An alternative design of a static plate, axial cross section;
FIG. 3A: An axial view of one half of the static plate of FIG. 3;
FIG. 3B: A view similar to the view of FIG. 3A, and showing the other half of the static plate of FIG. 3;
FIG. 4: A third design of a static disk, axial view;
FIG. 5: The same static disk as in FIG. 4, axial cross section along line V--V;
FIG. 6: A top view of a disc retarding conveyor in a diverter/drive station (view B as per FIG. 7);
FIG. 7: A side view of the same diverter/drive station (view A as per FIG. 6); and also
FIGS. 8a/b: A similar diverter/drive station as in FIGS. 6 and 7 with alternative designs of the drive forks and spoke elements.
DESCRIPTION OF PREFERRED EMBODIMENTS
This problem is solved by the fact that the static plates 1 are positioned in a plane 2 perpendicular to the axis 3 of the tractive element 4. They can be rotated concentrically to each other by means of circular, ring-like guide elements 5 and have a radial, horseshoe-like drilled hole 6, so that the plates are pushed singly onto the tractive elements and are locked to each other to prevent twisting, so that they cannot fall out of the tractive element again.
The drilled holes for the tractive elements are not formed in a straight line here, but rather are offset in the middle of the static plate by a small amount 7, e.g., 1 to 2 mm, at a diameter of the tractive element of 10 to 15 mm. When twisting the parts of the static plates against each other, the common drilled hole [lead] opening will be reduced in size due to its nonconcentric arrangement with respect to the rotational axis, so that
REFERENCES:
patent: 1321811 (1919-11-01), Dellenbach
patent: 2235991 (1941-03-01), Hapman
patent: 2476040 (1949-07-01), Hapman
patent: 2586538 (1952-02-01), Hapman
patent: 4890723 (1990-01-01), Debuisson et al.
Valenz Joseph E.
VSR Engineering GmbH Fordertechnik
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