DD130567B1 - LEAD DEVICE FOR A FINAL FOERDERBAND - Google Patents

Description

198013

Guiding device for an endless conveyor belt

Field of application of the invention:

The invention relates to a guide device for an endless conveyor belt with a width / length ratio of 1.5 or greater, which is guided circumferentially between two in a support frame rigidly mounted and parallel pulleys without wrapping a steering roller, wherein the steering roller in position is arranged transversely to the conveyor belt on both edges of the conveyor belt engaging scanners for the band position to both sides, so that the steering roller counteracting an off-center run of the endless conveyor belt is pivotally.

Characteristic of the known technical solution:

Previously known is a device for the automatic alignment of conveyor belts according to DD-PS 201, in which an endless conveyor belt is aligned by horizontal pivoting of a deflecting roller in front of a deflection roller on a straight line. A control mechanism acting on the strip edges of the conveyor belt ensures the activation and deactivation of a power drive effecting the pivoting of the deflecting roller. The disadvantage here is that the partial looping of the deflecting roller used for the straight guide takes place in the compressed one. Construction of very short endless conveyor belts is not applicable.

198013

Furthermore, DE-PS 599 4-74- a device for automatically controlling the run of conveyor belts is known in which a guide roller with respect to the conveyor belt to be controlled is arranged longitudinally and transversely displaceable, wherein the displacement of this guide roller directly from the band edges over a lever system is initiated. The required for very short and wide endless conveyor belts large adjustment of the idler roller is here with respect $ tuf the necessary adjusting torque alone by changing leverages can not be solved. Also, the entire adjusting torque must be applied by the band itself, which is easy with long bands, since small changes in angle of the guide roller relative to the tape at a greater distance guide roller - pulley noticeable shifts in the conveyor belt result. For very short bands, however, enormous forces would have to be transmitted from the band edges to the Gleitsehübe that lead to the destruction of the band and therefore excrete as a viable path.

Object of the invention:

The invention aims to avoid tape damage and malfunctions on an endless conveyor belt of great width and short length by means of an automatic straight-line guide.

Explanation of the essence of the invention:

The invention has for its object to provide a guide device, which makes it possible to control an endless conveyor belt with a width / length ratio of 1.5 or greater without wrapping a castor so that the endless conveyor belt at least one strand steadily circulating in the same plane.

According to the invention the object is achieved in that in a conventional manner to a perpendicular to the conveyor belt level

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and laterally mounted on the support frame swivel castor a further swivel castor is associated axially parallel in a common bearing section and between the non-positively against each other acting castors a strand of the endless conveyor belt is continuously guided. This arrangement allows, for example, applied at the lower run of the endless conveyor belt, this without pivoting the pulleys and without Lenkrollenumschlingung each run. The surface of the upper run can also run correctly in one plane. A feature of the invention is also that the scanning device in a conventional manner consists of a control bar with position stops for both edges of the endless conveyor belt and parallel to the axes of the pulleys and transmission means for the control movement between the control bar and a control member for a servomotor ,

Finally, a feature of the invention is that the scanning device consists of position stops, each of which is arranged directly on each control member, wherein the control organs are actuated at eccentric running of the endless conveyor belt alternatively and are linked to a servomotor in the counteracting changing direction actuating unit ,

With the means described above, an automatic device for regulating the run of a wide but very short endless conveyor belt is realized. All deviations of the endless conveyor belt from the central position are detected by the position stops and transmitted to the control member, which adjusts an opposite position of the guide roller pair via the servo motor.

Embodiment:

Reference to a drawing, an embodiment of the invention is explained in more detail v / earth. Show it:

198013

1 shows a guide device on an endless conveyor belt in perspective view,

Pig. 2 shows a guide device on an endless conveyor belt according to FIG. 1 in plan view for illustrating the adjusting movement.

In an unillustrated support frame, an endless conveyor belt 1 is mounted on two pulleys 2 with mutually parallel axes · On a strand of the endless conveyor belt 1, preferably the lower strand, a pair of castors 3 »4- arranged around an axis 5 with its bearing section 51 is pivotally mounted. By means of a servomotor 6 is another bearing part 61 of the castor pair 3; 4 from a parallel position to the pulleys 2 in positions A and B pivotally. The servomotor б is supported when introducing the adjusting movements on the bearing part 61 against the support frame. In the support frame, a control bar 7 is also slidably mounted parallel to the pulleys 2. This control bar 7 has position stops 8a and 8b, which engage the edges of the endless conveyor belt. Furthermore, 10 transmission means 9 are arranged between the control bar 7 and a control member. This transmission means 9 ensure that the control member 10 is driven only at excessive deflection of the endless conveyor belt 1 to subsequently via the servomotor 6, a pivoting of the castor pair 3; 4- to initiate.

An arrangement in which the position stops 8a; 8b are arranged directly on each control member 10 (not shown). In this case, the control member 10 is linked to a servomotor б in counteracting changing direction of adjustment driving unit. Depending on the alternative start-up on one of the position stops 8a; 8b, the direction of adjustment of the servomotor б for the castor pair 3; 4- vice versa

 The control member 10 can be used as electrical, pneumatic

198013

or hydraulic assemblies designed seir or mixed but used.

A mixed version would be feasible with an electrical control device 10, z. B. circuits to which the position stops 8a; 8b and then indirectly actuate a pneumatic control valve for the alternative application of the servomotor 6 electromagnetically.

Functionality:

As soon as the endless conveyor belt on the two deflection rollers emanates from the central position, for example in the direction of the position stop 8a, the control bar 7 is displaced in the direction of the position stop 8a. The transmission means 9 cause, after a certain emigration path, the control of the control member 10, for example a pneumatic valve. The control member 10 then releases compressed air that the servomotor 6, the castor pair 3 »4- shifted to position A. During startup of the endless conveyor belt against the position stop 8b and upon displacement of the control strips 7 in the direction of this position stop 8b, the control member 10 is reversed. Thus, compressed air enters the servo motor 6, to the castor pair 3; 4- to move to position B.

The execution according to point 3 of Erfindungsananspr.es exhibits the same behavior.

On the upper run a pressure roller 11 may be arranged, which serves the burden of this strand and counteracts wrinkles.

Claims (3)

198013 claim for invention: 1. guide device for an endless conveyor belt with a BreitenVLängenverhältnis of 1.5 or greater, which is guided between two rigidly mounted in a support frame and parallel pulleys without wrapping a castor, the steering roller in position to the conveyor belt on both Arranged at the edges of the conveyor belt scanning devices for the band position querverschwenklich to both sides, such that the steering roller counteracting an off-center run of the endless conveyor belt, characterized in that in a conventional manner to a perpendicular to the conveyor belt level · and laterally on Supporting frame mounted, swivel castor (4) another steering roller (3) axially parallel in a common bearing part (51; 61) is assigned and between the non-positively against each other acting castors (3; 4) a strand of the endless conveyor belt (1) continuously is. 2 · guiding device according to point 1, characterized in that the scanning device in a conventional manner from a control bar (7) with position stops (8a and 8b) for both edges of the endless conveyor belt (1) and parallel to the axes of the deflection rollers (2) and transmission means (9 ) for the control movement between control bar (7) and a control member (10) for a servomotor (6). 3. guide device according to item 1, characterized in that the scanning device consists of position stops (8a; 8b), each of which is arranged directly on each control member, wherein the control members in eccentric running of the endless conveyor belt (1) alternatively actuated and to a servomotor (6) in counteracting changing direction actuating unit are linked. For this purpose ... * LS drawings!