KR850001598B1 - Belt torsion prevention device - Google Patents

Abstract

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Description

Belt torsion prevention device

1 is a schematic side view of a conventional tubular belt conveyor.

2 is an enlarged cross-sectional front view in the direction of line II-II in FIG. 1;

3 is an enlarged plan view taken along line III-III in FIG. 1;

4 is an enlarged plan view of an exemplary embodiment of the present invention, in which a traveling path of the tubular belt is shown by a dotted line.

5 is a longitudinal cross-sectional view taken along the line IV-XV in FIG.

* Explanation of symbols for main parts of the drawings

67: bracket 68: calibration roller support

68a: base plate 68b: side plate

68c: fixed lever part 69: vertical axis pin

70: calibration roller 71: slot

72: solenoid valve 72a: working rod

73: vertical axis pin 74: axis arm

75: support arm 76: horizontal pin

77: coil spring 78: detection roller support

78a: base plate for detection roller 78b: side plate for detection roller

79: detection roller 80: micro switch

The present invention relates to an apparatus for preventing a tubular belt from torsion for use in a tubular belt conveyor.

Tubular belt conveyors have already been developed which contain flexible tubular circulation belts for completely enclosing substances such as powders, granules and broken masses in the tubular belt (1) and for transporting and lifting them in any direction and at any height. .

Examples of such conventional tubular belt conveyors are shown in FIGS. 1, 2 and 3. The flexible tubular circulation belt 1 is made of a flexible and elastic material, such as rubber, or of some soft plastic material, or a similar material. This flexible tubular circulation belt is interposed between the top drive roller (2) and the bottom drive roller (3), and forms a tubular shape by the belt being rolled up around the axis of the normal drive roller, which forms the tubular belt. The inner and outer surfaces overlap each other along the length of the. These tubular circulating belts are unfolded and exposed once they begin to descend to the opposite side of the curled circulating belt at an inclined angle.

The tubular circulation belt (1) has a plurality of supporting frames arranged on a right angle plate (5) installed at a suitable distance between two rollers, that is, the upper roller (2) and the lower roller (3) along the moving path of the belt (1). SUPPORT frame 4 is appropriately supported. Inside the support frame 4, two chambers are divided into partition plates 4c, as shown in FIG. 2, that is, an upper chamber 4a and a lower chamber 4b. The conveying passage 1a of the tubular circulation belt 1 is given through the upper chamber 4a, and the return passage 1b is given through the lower chamber 4b. Each of the upper chamber 4a and the lower chamber 4b of the support frame 4 has a plurality of support rollers 6 radially, which are in contact with the tubular circulation belt 1. The support roller (6) makes the shape of the tubular circulation belt (1) in the tubular shape and continues to support the tubular shape.

As shown in FIG. 3, the tubular circulation belt 1 unfolded from the lower roller 3 is supported by guide rollers 7 and 8 which support the bottom and both sides of the tubular circulation belt 1. As a result, it is gradually rolled up into a tubular shape. In this process, mixtures such as powder, pellets and broken mass supplied from the funnel 9 located directly above the lower roller 3 are wrapped and fed into the belt.

Both ends of the tubular circulating belt 1 overlap each other a little so as to completely surround the dripping material 10, and then the upper side of the support frame 4 along the conveying passage 1a of the tubular circulating belt 1 Is moved through 4a). The belt 1 continues to be supported in a tubular shape by the support roller 6 in the upper chamber 4a during the movement. In this process, since the overlapping portions of both ends of the belt are maintained up to the top of the belt, there is no danger that the material completely enclosed in the tubular circulation belt 1 will leak out of the belt 1.

The tubular circulation belt 1 is gradually unfolded by a belt unfolding structure (not shown) having the same structure as the belt bending structure as shown in FIG. 3 near the top drive roller 2. The unfolded tubular circulation belt 1 rotates around the top drive roller 2, and the loaded material 10 is transferred from the tubular circulation belt 1 to a receiver 11 located at the top end.

Thereafter, the tubular circulation belt 1 is moved downward along the return passage 1b. Unfolded tubular circulation belt (1) is gradually rounded by the phenomenon of being rolled up with the help of the guide roller to become a tubular again. The tubular circulation belt 1 passes through the lower end 4b of the support frame 4, wherein the tubular circulation belt 1 is tubularly shaped by the support roller 6 on the lower side 4b side. At the lower end of the tubular circulation belt (1), both end surfaces of the belt overlap. The tubular circulation belt 1 is gradually expanded by another guide roller, and the unrolled tubular circulation belt 1 is returned to the lower roller 3 again. In this way, the tubular belt conveyor carries the dripping material.

Belt conveyors of this kind are sometimes used over long distances of hundreds of meters. In the case where the distance between the upper roller 2 and the lower roller 3 is considerably far, the tubular circulation belt 1 is often twisted around the belt axis due to the following causes.

(a) Long-term use results in partial deformation of the mechanical parts and other parts.

(b) When the position of the support rollers is scattered

(c) When there is an error in accuracy in manufacturing the support rollers and the parts supporting the support rollers;

(d) there is partial wear or deformation in the support roller;

(e) When there is nonuniformity in thickness, elasticity, strength, etc. of flexible tubular circulation belt

In particular, when twisted in the transport passage (1a) of the tubular circulation belt (1), the dripping material (10) enclosed in the tubular circulation belt is counted out, and excessive force is applied to the tubular circulation belt (1) and the driving motor. It accelerates abrasion and finally causes parts to break.

It is an object of the present invention to provide a simple, stable and reliable device that prevents torsion of a flexible tubular circulation belt that eliminates irrationality from the various factors described above.

According to the present invention, a flexible tubular belt is interposed between the first and second rollers, which are located at a certain distance from each other, in a device for preventing the flexible tubular belt from torsion for use in a tubular belt conveyor, and on the tubular belt. In this tubular form, the belt moving between the two rollers is supported by a set of support rollers, the support rollers being arranged radially around the circumference of the belt in contact with it. When the tubular belt is twisted in the right or left direction, the first and second solenoids of the calibration rollers installed in the support rollers are pivotally mounted on the support frame when the tubular belt is twisted in the right or left direction. A solenoid valve is actuated by the detection roller And it has a correction roller characterized by an improved apparatus capable of changing the angle of the spanning correction rollers in an inclined state on a plane orthogonal with respect to the direction in which the tubular belt by the correcting means so as to change to the right and to the left.

DETAILED DESCRIPTION Hereinafter, the same parts will be described with the same numbers in the drawings.

4 and 5 show an embodiment according to the present invention, which is applied to the conventional belt conveyor of FIGS. 1, 2, and 3.

The bracket 67 is connected to the partition plate 4c of the support frame 4 and extends backward by a certain length. The U-shaped straightening roller 68 extends in a direction perpendicular to the base plate 68a at the end of the base plate 68a and the base plate 68a extending in a direction substantially perpendicular to the moving direction of the belt 1. There is a pair of side plates 68b. This calibration roller support 68 is attached to the center of the bracket plate 68a so that it can rotate in the center of the bracket 67 by the vertical turning pin 69 so that it may rotate in the bracket 67. As shown in FIG. The side plate 68b rotatably supports the calibration roller 70 in contact with the traveling path 1a of the tubular belt 1. The fixed lever portion 68c is connected to the lower end of the base plate 68a (see FIG. 13), and the other end of the fixed lever portion has a pair of slots 71 extending in the axial direction of the calibration roller. .

The pair of solenoid valves 72 are formed with an actuating rod 72a provided on one upper end surface of the bracket 67 in a symmetrical manner in FIG. 4 with respect to the fixed lever portion 68c, and a free end of the actuating rod 72a. Is connected to the free end of the fixed lever portion 68c by a vertical pivot pin in their slot.

The pivot arm 74 is provided so as to be rotated by the vertical axis pin 73 at the center front end of the lower surface of the bracket 67. The support arm 75 is connected to the upper end of the pivot arm 74 by a horizontal pin 76 so as to rotate. The support arm 75 is supported upward by the coil spring 77 to fit the horizontal pin 76.

The U-shaped detection roller support 78 has a pair of side plates extending from the ends of the base plate 78a and the base plate 78a by a predetermined length in a direction perpendicular to the base plate 78a. There is (78b). The side plate 78b supports the rotation of the detection roller 78 rolled by the tubular belt 1 along the conveying direction of the tubular belt 1, and the other end of the free end of the support arm 75 is rotatable. It is fixed to the rear part. A pair of micro switches 80 for operating the solenoid valve 72 are provided on the rear side of the pedestal 67 on both sides of the support arm 75.

When the traveling path 1a of the tubular belt 1 is twisted clockwise with respect to the conveying direction of the tubular belt 1, the support arm 75 together with the detection roller 79 is connected to the tubular belt 1 It is moved clockwise relative to the conveying direction, ie upward in FIG. Then, the micro switch 80 located upward in FIG. 4 is operated by the support arm 75. As a result, the rear solenoid valve 72 is actuated by the micro switch 80, the actuating rod 72a is pulled out, and the calibration roller support 68 together with the calibration roller 70 has a vertical axis pin in FIG. (69) Rotate clockwise around. Thus, the straightening roller 70 provides a torsional force to the tubular belt 1 counterclockwise with respect to the conveying direction of the tubular belt 1, so that the passage passage 1a of the tubular belt 1 is already explained. Automatically cancels or eliminates torsion When twisted counterclockwise with respect to the traveling passageway of the belt 1 of the tubular belt 1, the twist of the tubular belt 1 is also automatically canceled or eliminated in exactly the same manner as already described.

Claims (1)

Among the devices for preventing flexible tubular belts from torsion for use in tubular belt conveyors, the flexible tubular belts (1) span between the first and second rollers (2, 3), which are located at a distance from each other. On (2, 3) the tubular belt (1) is unfolded, and the belt moving between the two rollers in this tubular form is supported by a set of support rollers, and the support rollers circumscribe the circumference of the belt in contact with it. A device for preventing twisting, which is arranged radially and is installed to rotate about the support frame, when the tubular belt (1) is twisted in the right or left direction, pivotally to the support frame (4). The first and second solenoid valves of the angle of the calibration roller 70 installed on the equipped calibration roller support 68 are detected. To change the angle of the calibration roller 70 in an inclined state on a plane orthogonal to the traveling direction of the tubular belt 1 by means of a calibration means adapted to change the calibration roller 70 right and left. Belt torsion preventing device, characterized in that.

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