JP2004043133A - Pipe conveyor belt overlap detection device - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a detection device for folding and overlapping of a belt of a pipe conveyor capable of immediately detecting that the width end part of the conveying belt is wound around the pulley in folded and overlapped state, avoiding the generation of meandering and twisting of the conveying belt by the promptly performing an appropriate treatment, and preventing the conveying belt from damaging. <P>SOLUTION: The detection device for folding and overlapping of the belt of the pipe conveyor is constituted so that it rounds the endless conveying belt in the shape of a pipe and conveys the conveyed article putting it into the conveying belt rounded in the shape of the pipe. It is equipped with a detector 11 operating according to the thickness of the conveying belt 1 hung around the pulley 3. <P>COPYRIGHT: (C)2004,JPO

Description

[0001]
TECHNICAL FIELD OF THE INVENTION
TECHNICAL FIELD The present invention relates to an apparatus for detecting a belt overlap of a pipe conveyor.
[0002]
[Prior art]
BACKGROUND ART Conventionally, there has been known a pipe conveyor configured to round an endless conveyor belt into a pipe shape by a guide member, and to convey an object to be conveyed such as coal inside the conveyor belt rounded into the pipe shape. .
[0003]
3 to 6 show an example of a conventional pipe conveyor. As shown in FIG. 3, a conveyor belt 1 is provided between a pulley 2 disposed at a front side and a pulley 3 disposed at a rear side. The pulley 2 is wrapped endlessly and circulates in the direction of the arrow by rotating the front pulley 2 by a driving device (not shown). In most of the upper forward path and the lower return path, the transport belt 1. A pipe portion 5 in which both side edges 1a in the width direction are brought close to each other by a guide frame 4 as a guide member and finally polymerized and rounded into a pipe shape, and the pipe-like state is maintained by a shape retaining frame 7. Is formed.
[0004]
As shown in FIGS. 3 and 4, a chute 6 for dropping a conveyed object such as coal onto the conveyor belt 1 is provided upstream of the pipe section 5 on the outward path. A load receiving chute 10 for receiving a conveyed object conveyed by the conveyer belt 1 is provided in the vicinity of 2.
[0005]
A plurality of the guide frames 4 are provided between the pulley 3 and the pipe 5 disposed at the rear and between the pipe 5 and the pulley 2 disposed at the front, respectively (in the example of the figure, the guide frames 4a and 4b are provided). (Two each before and after). The guide frame 4 is provided at right angles to the traveling direction of the conveyor belt 1 in the pipe section 5 and is divided into two upper and lower stages as shown in FIG. 5, and the upper stage is in contact with the outer surface of the conveyor belt 1. A plurality (three in the illustrated example) of rotating guide rollers 8 are provided along the width direction of the transport belt 1. These guide rollers 8 are arranged so as to gradually round the transport belt 1 in a transition region where the transport belt 1 is changed from a flat plate shape to a pipe shape. Specifically, the three guide rollers 8 are arranged so that their axes are located on a plane orthogonal to the running direction (longitudinal direction) of the transport belt 1 in the pipe portion 5, and are positioned upward on the upper side. It is arranged in an opening dish shape or U-shape, and on the lower side, it is arranged vertically symmetrically with the upper side. Therefore, in the guide frame 4 on the side of the pulley 3 arranged rearward, the upper guide roller 8 guides the transport belt 1 so as to be round. Similarly, in the guide frame 4 on the pulley 2 side disposed in front, the upper guide roller 8 guides the transport belt 1 so as to expand.
[0006]
Further, the shape retaining frame 7 is also provided orthogonal to the traveling direction of the conveyor belt 1 in the pipe portion 5, and is divided into two upper and lower stages as shown in FIG. ) Are annularly arranged. That is, the shape retaining roller 9 is also arranged such that its axis is located on a plane orthogonal to the traveling direction of the transport belt 1. Then, as the transport belt 1 passes through the inside of the plurality of ring-shaped rollers 9 arranged in an annular shape, the roller 9 rotates in contact with the outer surface of the belt 1 to prevent the belt 1 from unfolding. The pipe-like state of the conveyor belt 1 is maintained.
[0007]
In the pipe conveyor as described above, the conveyor belt 1 fed from below to above along the pulley 3 arranged rearward moves the upper stages of the two guide frames 4a and 4b in the transition region from the flat plate to the pipe. As it passes, it is gradually rounded into a pipe shape, and while being rounded, the transported object dropped from the chute 6 is wrapped inside as shown in FIG. In the pipe portion 5, the shape is maintained by passing through the upper stages of the plurality of shape retaining frames 7, and in the transition region from the pipe shape to the flat plate shape, the shape passes through the upper stages of the two guide frames 4a and 4b. As a result, the conveyed object is loaded into the load receiving chute 10 while being gradually developed into a flat plate shape and being fed downward from above along the pulley 2 arranged in front, and thereafter, the two guide frames 4a and 4b. After being passed through the lower stage, it is again rounded into a pipe shape, and after passing through the lower stage of each shape-retaining frame 7, it is deployed stepwise through the lower stages of the two guide frames 4 a and 4 b and arranged rearward. It circulates to the pulley 3.
[0008]
Thereby, the conveyed object such as coal can be surely conveyed without scattering the dust or the like, and there is no fear that the fine particles and the like of the conveyed object adhered to the conveying belt 1 fall on the return path.
[0009]
[Problems to be solved by the invention]
However, in the pipe conveyor as described above, if the conveyor belt 1 has a tendency to curl due to long-term use, the conveyor belt 1 does not return to a flat shape, but its width end is folded and overlapped with the pulleys 2 and 3. If the conveyor belt 1 is left as it is, the right and left balance of the conveyor belt 1 wrapped around the pulleys 2 and 3 may be lost and meandering may occur. In an extreme case, the conveyor belt 1 may be completely twisted. In some cases, the function as a conveyor is not fulfilled, and a great deal of time and effort is required for recovery, and the transport belt 1 may be damaged.
[0010]
In view of such circumstances, the present invention can immediately detect that the width end of the conveyor belt is folded and wound on the pulley, and by taking appropriate measures as soon as possible, the meandering and twisting of the conveyor belt can be prevented. An object of the present invention is to provide an apparatus for detecting a belt break and overlap of a pipe conveyor, which can avoid occurrence of the belt and prevent damage to the conveyor belt.
[0011]
[Means for Solving the Problems]
The present invention is an endless conveyor belt rounded into a pipe shape, a belt folding detection device of a pipe conveyor configured to convey an object to be transported inside the pipe-shaped rolled conveyor belt,
The present invention relates to a belt conveyor belt overlap detecting device, comprising a detector which operates according to the thickness of a transport belt wound around a pulley.
[0012]
According to the above means, the following effects can be obtained.
[0013]
When the width end portion of the conveyor belt is folded and wound around the pulley, the thickness of the conveyor belt stretched around the pulley becomes thicker, and the detector operates to detect that an abnormality has occurred. It is possible to immediately take appropriate measures such as stopping the operation of the conveyor, correcting the curl of the conveyor belt and re-attaching the conveyor belt to the pulleys. It is possible to avoid collapse and meandering, and to completely twist the transport belt, thereby reducing the time and effort required for recovery and eliminating the risk of damage to the transport belt.
[0014]
In the belt overlap detection device of the pipe conveyor, a rod-shaped body that is disposed in parallel with the pulley and that is displaced in the belt advancing direction when the conveyor belt approaches the pulley in a state where the thickness of the conveyor belt is increased due to the folding overlap, The detector can be constituted by a limit switch that is activated by the displacement of the rod.
[0015]
BEST MODE FOR CARRYING OUT THE INVENTION
Hereinafter, embodiments of the present invention will be described with reference to the drawings.
[0016]
FIGS. 1 and 2 show an example of an embodiment of the present invention. In the drawings, portions denoted by the same reference numerals as those in FIGS. 3 to 6 represent the same components, and the basic configuration is shown in FIGS. This embodiment is similar to the conventional one shown in FIG. 6, but is characterized by a detector 11 which operates according to the thickness of the conveyor belt 1 wound around the pulley 3, as shown in FIG. The point is to have.
[0017]
The detector 11 is disposed in parallel with the pulley 3, and has a rod-shaped body 12 that is displaced in the belt advancing direction when the conveyor belt 1 approaches the pulley 3 in a state where the thickness of the conveyor belt 1 is increased due to folding and overlapping. And a limit switch 13 that is activated by the displacement of the switch 12.
[0018]
In the illustrated example, the rod-shaped body 12 is attached to a support shaft 15 supported by a fixed bracket 14 so as to extend in parallel with the rotation axis of the pulley 3 via a support arm 16, and the transport is thickened by folding. Only when pushed by the belt 1, it swings as shown by a phantom line in FIG. 1, and at this time, an operating rod that extends from the support shaft 15 in a direction substantially perpendicular to the support arm 16. 17 pushes down the switch rod 18 of the limit switch 13 so that the limit switch 13 is operated.
[0019]
Next, the operation of the illustrated example will be described.
[0020]
In a normal state in which the transport belt 1 is not folded, the rod 12 of the detector 11 is held without being pushed by the transport belt 1 as shown in a solid line in FIG. The support arm 16 and the operating rod 17 do not swing, and the limit switch 13 does not operate.
[0021]
However, as shown in FIG. 2B, when the width end portion of the transport belt 1 is folded and wound around the pulley 3, the thickness of the transport belt 1 wound around the pulley 3 increases, 2B, the rod 12 of the detector 11 is pushed by the conveyor belt 1, the support arm 16 and the operating rod 17 swing, and the switch rod 18 of the limit switch 13 Is pressed down to operate, and it is detected that an abnormality has occurred.
[0022]
For this reason, it is possible to immediately take an appropriate action such as stopping the operation of the pipe conveyor, correcting the curl of the transport belt 1 and re-attaching the pulley 3, and thereby the belt is wound around the pulley 3. The right and left balance of the transport belt 1 is prevented from being lost and meandering, and the transport belt 1 is prevented from being completely twisted, requiring less labor and time for restoration, and the transport belt 1 being damaged. No more worries.
[0023]
In this way, it is possible to immediately detect that the width end portion of the transport belt 1 is folded and wound around the pulley 3, and to perform appropriate measures as soon as possible to avoid the meandering and twisting of the transport belt 1. In addition, the transport belt 1 can be prevented from being damaged.
[0024]
It should be noted that the belt fold detection device of the pipe conveyor according to the present invention is not limited to the illustrated example described above, and it is needless to say that various changes can be made without departing from the gist of the present invention. .
[0025]
【The invention's effect】
As described above, according to the belt fold detection device for a pipe conveyor of the present invention, it is possible to immediately detect that the width end of the conveyor belt is folded and wrapped around the pulley, and to take appropriate measures immediately. By doing so, it is possible to avoid the occurrence of meandering and twisting of the transport belt and to achieve an excellent effect of preventing damage to the transport belt.
[Brief description of the drawings]
FIG. 1 is an enlarged side view of a main part of an example of an embodiment of the present invention.
FIGS. 2A and 2B are views taken along the line II-II of FIG. 1, wherein FIG. 2A is a view showing a normal state in which the transport belt is not folded, and FIG. 2B is a view in which the transport belt is folded. It is a figure showing the state at the time of the abnormal which is.
FIG. 3 is a side view showing an example of a conventional pipe conveyor.
FIG. 4 is a view taken in the direction of arrows IV-IV in FIG. 3;
FIG. 5 is a view taken in the direction of arrows VV in FIG. 3;
FIG. 6 is a view taken in the direction of arrows VI-VI in FIG. 3;
[Explanation of symbols]
1 Conveyor belt 2 Pulley 3 Pulley 11 Detector 12 Rod 13 Limit switch

Claims (2)

An endless transport belt is rolled into a pipe shape, and a belt conveyor belt overlap detecting device configured to transport an object to be transported inside the transport belt rolled into the pipe shape,
An apparatus for detecting the folding of a belt on a pipe conveyor, comprising a detector that operates according to the thickness of a conveyor belt wound around a pulley. Detected from a rod that is arranged parallel to the pulley and that is displaced in the belt advancing direction when it reaches the pulley in a state where the thickness of the conveyor belt is increased due to folding and overlapping, and a limit switch that is activated by the displacement of the rod. 2. The apparatus according to claim 1, wherein the belt fold detection device comprises a container.

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