Conveyors: power-driven – Conveyor section – Endless conveyor
Patent
1996-05-22
1998-04-28
Krizek, Janice L.
Conveyors: power-driven
Conveyor section
Endless conveyor
198840, B65G 3916
Patent
active
057433780
DESCRIPTION:
BRIEF SUMMARY
The present invention concerns a device for stabilizing the conveyor belt in a self-adjusting belt steering assembly.
There are several known designs for self-adjusting belt steering assemblies. Belt assemblies of this kind have the guide rollers for the conveyor belt mounted on a plate which is rotatable about a shaft. On the plate there is mounted an arm with a transverse stay to which are attached side rollers or side guides which run along the edge of the belt.
The guide rollers or side rollers follow the edge of the conveyor belt. In the event of a lateral misalignment of the conveyor belt the misalignment will be transferred to the supporting rollers which are rotated in a direction which causes the belt to return to its normal position.
In DE 174 491 there is disclosed a device in connection with conveyor belts in order to correct for lateral misalignments which occur during operation and thus return the belt to its normal position. A set of supporting rollers for the conveyor belt is mounted on a plate which is rotatably attached to the base. On the rotatable plate there is mounted an arm with a transverse stay. The arm may be jointed. On the transverse stay there are attached guide rollers which run along the edge of the conveyor belt. The guide rollers follow the edge of the conveyor belt and in the event of a lateral misalignment of the belt, the arm will transfer the displacement and rotate the supporting rollers in a direction which causes the conveyor belt to return to its normal position. In the event of a lateral misalignment the axes of the supporting rollers will be tilted in relation to the direction of travel of the conveyor belt and this oblique position causes the conveyor belt to be returned to its normal position.
When the conveyor belt travels in the direction from the guide rollers towards the supporting rollers, there is a direct transfer between the rollers by means of the arm with the transverse stay where the side rollers are attached.
When the conveyor belt travels in the direction from the supporting rollers towards the guide rollers, it is necessary to use a divided arm with a joint in order for the supporting rollers to be rotated in the correct direction when a lateral misalignment occurs.
It has been shown that known belt training idlers have a tendency to wandering and misalignment especially when there is uneven loading or uneven weight distribution on the conveyor belt, thus causing wear along its edges. The misalignment can be so severe that the conveyor belt can run off the rollers, thus causing a breakdown.
The object of the present invention is to avoid the above-mentioned drawbacks.
A belt training idler which causes less wear on the conveyor belt, thus obtaining an extension of its wear life, will represent a substantial financial gain since the costs of a conveyor belt are normally extremely high. In addition an improvement in the operating conditions, thus avoiding breakdowns, will represent greater efficiency and reduced maintenance expenses.
The surprising discovery has been made that a belt training idler's stability and tendency to misalignment are considerably improved when the side rollers or side guides are kept in a perpendicular position on the conveyor belt.
According to the invention this problem is solved by employing a stay which ensures that the side rollers are kept in as perpendicular a position as possible on the conveyor belt regardless of lateral movement and loading, and which is characterized by those features which are presented in the patent claims.
The invention will now be explained in more detail with reference to drawings which illustrate an embodiment of a belt training idler with the device, only the principles of the invention being illustrated. FIGS. 1-4 show a belt training idler according to the invention. The same references are used in all figures.
FIGS. 1 and 2 are a sectional elevation and a side view respectively of a belt training idler, where the belt moves from the guide rollers towards the supporting rollers.
FIGS. 3 a
REFERENCES:
patent: 1217412 (1917-02-01), Chaplin
patent: 2160057 (1939-05-01), Carus et al.
patent: 3058574 (1962-10-01), Gianukos
patent: 3368665 (1968-02-01), Jinkins
patent: 4506782 (1985-03-01), Jeanneret et al.
patent: 5609241 (1997-03-01), Shaw
Gaarden Kjell Arne
Hovst.o slashed. Kenneth
AS Techno Track
Krizek Janice L.
LandOfFree
Device for stabilizing the conveyor belt in a self-adjusting bel does not yet have a rating. At this time, there are no reviews or comments for this patent.
If you have personal experience with Device for stabilizing the conveyor belt in a self-adjusting bel, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Device for stabilizing the conveyor belt in a self-adjusting bel will most certainly appreciate the feedback.
Profile ID: LFUS-PAI-O-1525070