WO2013187063A1

WO2013187063A1 - Belt conveyer device

Info

Publication number: WO2013187063A1
Application number: PCT/JP2013/003695
Authority: WO
Inventors: 邦俊鈴木
Original assignee: 横浜ゴム株式会社
Priority date: 2012-06-14
Filing date: 2013-06-12
Publication date: 2013-12-19
Also published as: AU2013275616B2; CN104334479A; JP2013256381A; AU2013275616A1; JP5939051B2; CN104334479B

Abstract

Provided is a belt conveyor device that is favorable in terms of stabilizing the movement of the conveyor belt and ensuring the durability of the edges of the conveyor belt. An analysis means (32) calculates the relative position, with respect to the conveyor belt (16), of a conveyance object (2) placed on the conveyor belt (16), on the basis of image information picked-up by an image pick-up device (image pick-up means) (22). A drive control means (34) controls a drive means (30) on the basis of the calculated relative position of the conveyance object (2), and thereby changes the orientation of a rocking plate (28). As a result, if the conveyance object (2) is displaced in the width direction of the conveyor belt (16), the conveyance object (2) is moved into the center of the conveyor belt (16).

Description

Belt conveyor equipment

The present invention relates to a belt conveyor device.

There is a belt conveyor device in which an endless conveyor belt is supported in a trough shape by a conveyor roller.
In such a belt conveyor apparatus, when a conveyed product is placed at a position deviated to one side from the center in the width direction of the conveyor belt, a force in a direction toward the other in the width direction is applied to the conveyor belt by the mass of the conveyed product. It acts and the conveyor belt shifts to the other side in the width direction.
When such a conveyor belt shift occurs, the conveyor belt meanders or is shifted in the width direction, so that it is impossible to stably convey the conveyed product.
Therefore, a centering device (adjusting roller) that detects the position of one edge in the width direction of the conveyor belt and suppresses the meandering of the conveyor belt by changing the direction of the conveyor roller based on the detection result. It has been proposed (see Patent Document 1).

JP-A-6-74306

However, the prior art has the following disadvantages because the direction of the conveyor roller is changed based on the detection result of the position of one edge in the width direction of the conveyor belt.
1) The endless conveyor belt is a joined portion in which end portions in the longitudinal direction are joined, and the width of the joined portion is narrower than the width of the portion of the conveyor belt excluding the joined portion. For this reason, in the prior art, the edge of the conveyor belt is misdetected as being displaced in the width direction at the joint, so the direction of the conveyor roller changes and the running of the conveyor belt becomes unstable.
2) Even when the edge of the conveyor belt is damaged, erroneous detection of the position of the edge in the width direction of the conveyor belt occurs similarly to 1), and the running of the conveyor belt becomes unstable.
3) By changing the direction of the conveyor roller, an excessive load is easily applied to the conveyor belt, which is disadvantageous in ensuring durability of the edge of the conveyor belt.
The present invention has been made in view of such circumstances, and provides a belt conveyor device that is advantageous in stabilizing the running of the conveyor belt and ensuring the durability of the edge of the conveyor belt. With the goal.

In order to achieve the above object, the present invention provides a belt conveyor device comprising an endlessly formed conveyor belt and a trough flora for supporting the conveyor belt in a trough shape, and a traveling direction of the conveyor belt. Relative position detection means for detecting a relative position of the transported object placed on the conveyor belt with respect to the conveyor belt in the orthogonal width direction, and the transport based on the detected relative position of the transported object. A transporting object moving means for moving the position of the object in the width direction.

According to the present invention, the direction of the conveyor roller is not changed based on the detection result of the position of one edge in the width direction of the conveyor belt, but the relative position of the conveyed product with respect to the conveyor belt in the width direction of the conveyor belt. And the position in the width direction of the transported object is moved based on the detection result. For this reason, there is no malfunction due to a change in the dimension of the conveyor belt in the width direction, which is advantageous in stabilizing the running of the conveyor belt. Further, since the direction of the conveyor roller is not changed, an excessive load is not applied to the conveyor belt, which is advantageous in ensuring the durability of the conveyor belt.

It is a lineblock diagram of belt conveyor device 10 concerning a 1st embodiment. It is a block diagram of belt conveyor device 10 concerning a 1st embodiment. It is AA sectional view taken on the line of FIG. (A)-(C) are top views which show the structure and operation | movement of the conveyed product moving mechanism 24. FIG. (A) is explanatory drawing which shows the state in which the conveyed product 2 deviated in the width direction of the conveyor belt 16, and (B) is the state which the conveyor belt 16 shifted | deviated to the width direction with the mass of the conveyed product 2. It is explanatory drawing shown. It is a block diagram of the belt conveyor apparatus 10 which concerns on 2nd Embodiment. It is a block diagram of the belt conveyor apparatus 10 which concerns on 2nd Embodiment. FIG. 7 is a cross-sectional view taken along the line AA in FIG. FIG. 7 is a cross-sectional view taken along the line AA in FIG. 6, and shows the measurement operation of the displacement sensors 36 A, 36 B, and 38 in a state where the conveyed product 2 is placed on the conveyor belt 16.

(First embodiment)
As shown in FIG. 1, the belt conveyor apparatus 10 is comprised including the drive pulley 12, the driven pulley 14, and the endless conveyor belt 16 hung around them.
The drive belt 12 is driven to rotate by a driving force supplied from a motor (not shown), so that the conveyor belt 16 travels between the drive pulley 12 and the driven pulley 14.
The upper part of the conveyor belt 16 is the outward path, the lower part is the return path, and a chute 18 for dropping the conveyed product 2 onto the conveyor belt 16 is provided in the upstream part of the outward path.
In addition, the conveyed product 2 is minerals, such as iron ore, coal, limestone, earth and sand, powder, etc., and is not specifically limited.

As shown in FIG. 3, in the forward path of the conveyor belt 16, a plurality of traflora 20 including a central roller 20A and

inclined rollers

20B and 20C on both sides are arranged at intervals in the running direction of the conveyor belt.
Therefore, in the outward path, the conveyor belt 16 is formed with a concave central belt portion 16A and

inclined belt portions

16B and 16C on both sides thereof. That is, the traflora 20 supports the conveyor belt 16 in a trough shape.

As shown in FIG. 1, the belt conveyor device 10 further includes an imaging device 22, a transported material moving mechanism 24, and a control device 26.
As shown in FIG. 3, the imaging device 22 captures the conveyor belt 16 portion and the transported object 2 that are located in the forward path from above the conveyor belt 16, generates image information, and supplies the image information to the control device 26. The imaging means of a claim is comprised.

As shown in FIGS. 4A to 4C, the transported article moving mechanism 24 includes a swing plate 28 and a driving means 30.
Two oscillating plates 28 are provided on the conveyor belt 16 such that both sides in the thickness direction are directed in the width direction of the conveyor belt 16 and spaced in the width direction of the conveyor belt 16.
These two rocking plates 28 are disposed above the

inclined rollers

20B and 20C (FIG. 3) on both sides.
Each swing plate 28 is supported so as to be swingable from above the conveyor belt 16 via a support shaft 31.

The driving means 30 swings the swinging plate 28 on the conveyor belt 16 so that the directions of both sides in the thickness direction are changed based on a control signal supplied from the control device 26.
The drive means 30 includes, on the side of the conveyor belt 16, an air cylinder 3002 that is a telescopic actuator having a base pivotally connected thereto, and a rod 3004 that connects between the ends of the two swing plates 28. It is configured. The piston rod 3002A and the rod 3004 of the air cylinder 3002 are pivotally attached.

As shown in FIG. 4A, when the transported object 2 is deviated to the left of the center in the width direction of the conveyor belt 16, the two swing plates are moved toward the downstream in the traveling direction by the driving means 30. When the direction changes so that 28 approaches the right direction, the conveyed product 2 is guided by the two swing plates 28 and moved to the center in the width direction of the conveyor belt 16.

As shown in FIG. 4B, when the transported object 2 is deviated to the right side from the center in the width direction of the conveyor belt 16, the two rocking plates are moved toward the downstream in the traveling direction by the driving means 30. When the direction is changed so that 28 approaches the left direction, the conveyed product 2 is guided by the two swing plates 28 and moved to the center in the width direction of the conveyor belt 16.

As shown in FIG. 4 (C), when the conveyed product 2 is located at the center in the width direction of the conveyor belt 16, the two swing plates 28 are parallel to the running direction of the conveyor belt 16 by the driving means 30. When the direction is changed, the conveyed product 2 passes between the two swing plates 28 and is conveyed in a state of being positioned at the center in the width direction of the conveyor belt 16.

The transporting object moving mechanism 24 is not limited to the one using the swing plate 28 and the driving means 30 described above, and any mechanism can be used as long as the transporting object 2 can be moved in the width direction of the conveyor belt 16. Various known mechanisms can be used.

As shown in FIG. 2, the control device 26 is configured by a microcomputer in which a CPU, a ROM that stores a control program, a RAM that provides a working area, an interface unit, and the like are connected by a bus. The interface unit is an interface between the imaging device 22 and the driving unit 30.
The CPU constitutes the analysis means 32 and the drive control means 34 by executing the control program.

The analysis unit 32 analyzes the image information supplied from the imaging device 22 to calculate the relative position of the transported object 2 placed on the conveyor belt 16 with respect to the conveyor belt 16 in the width direction of the conveyor belt 16. To do.
Therefore, in the present embodiment, the relative position detecting means for detecting the relative position of the transported object 2 placed on the conveyor belt 16 with respect to the conveyor belt 16 by the imaging device 22 (imaging means) and the analyzing means 32. Is configured.

The drive control unit 34 moves the position of the transported object 2 in the width direction by supplying a control signal to the drive unit 30 of the transported object moving mechanism 24 based on the detected relative position of the transported object 2. is there.
Therefore, in this embodiment, the transport object moving mechanism 24 and the drive control unit 34 move the transport object 2 in the width direction based on the detected relative position of the transport object 2. Is configured.

Next, the effect of the belt conveyor apparatus 10 is demonstrated.
First, with reference to FIG. 5, the case where the conveyed product 2 is mounted in the location shifted to one side of the width direction of the conveyor belt 16 is demonstrated.
As shown in FIG. 5 (A), the transported object 2 is placed at a position deviated to one side in the width direction of the conveyor belt 16 or is transported by vibration or force applied to the transported object 2 in the process of being transported. The object 2 may move from the center in the width direction of the conveyor belt 16 to a position deviated to one side.
In this case, as shown in FIG. 5B, a force acts on the conveyor belt 16 toward the other side in the width direction due to the weight of the conveyed product 2, and the conveyor belt 16 is shifted in the width direction.
When such a deviation of the conveyor belt 16 occurs, the conveyor belt 16 meanders or is shifted in the width direction, and the transported material 2 cannot be stably conveyed.

In the present embodiment, when the transported article 2 is placed on the conveyor belt 16 and the conveyor belt 16 travels, as shown in FIG. 3, it is based on image information captured by the imaging device 22 (imaging means). Thus, the analysis means 32 calculates the relative position of the conveyed product 2 placed on the conveyor belt 16 with respect to the conveyor belt 16 in the width direction of the conveyor belt 16.
The drive control means 34 controls the drive means 30 based on the calculated relative position of the transported article 2 to change the orientation of the swing plate 28 as shown in FIGS. 4 (A) and 4 (B). . When the calculated relative position of the transported object 2 is the center in the width direction of the conveyor belt 16, the swing plate 28 extends along the traveling direction as shown in FIG. State is maintained.
Thereby, when the transported object 2 is displaced in the width direction of the conveyor belt 16 as shown by a solid line in FIG. 3, the transported object 2 is at the center of the conveyor belt 16 as shown by a two-dot chain line in FIG. 3. Moved.
Accordingly, it is possible to stabilize the conveyance of the conveyed product 2 by the conveyor belt 16.
In this case, unlike the prior art, the direction of the conveyor roller (traflora 20) is not changed based on the detection result of the position of one edge of the conveyor belt 16 in the width direction. There is no malfunction due to dimensional variation, and this is more advantageous in stabilizing the running of the conveyor belt 16.
Further, since the direction of the conveyor roller (traflora 20) is not changed, an excessive load is not applied to the conveyor belt 16, which is advantageous in securing the durability of the conveyor belt 16.

In addition, the conveyed product 2 mounted on the conveyor belt 16 vibrates up and down each time it gets over the trafola 20. Such vibration causes the position of the transported object 2 in the width direction of the conveyor belt 16 to fluctuate. In particular, in a bent portion where the direction of the conveyor belt 16 changes in the vertical direction when the belt conveyor device 10 is viewed from the side, the transported material 2 is easily lifted in addition to the above-described vertical vibrations. The position of is more likely to fluctuate.
This embodiment is particularly advantageous in stabilizing the traveling of the conveyor belt 16 in the belt conveyor device 10 in which the position of the transported material 2 is likely to vary in the width direction.

(Second Embodiment)
Next, a second embodiment will be described.
The second embodiment is different from the first embodiment in that a plurality of displacement sensors are used as relative position detection means instead of the imaging device 22, and the other configuration is the first embodiment. It is the same.
In the following embodiments, the same parts and members as those in the first embodiment are denoted by the same reference numerals as those in the first embodiment, and the description thereof is omitted or simply described.

As shown in FIGS. 6 to 8, the belt conveyor device 10 includes a drive pulley 12, a driven pulley 14, a conveyor belt 16, a transported material moving mechanism 24, and a control device 26, as in the first embodiment. .
As shown in FIG. 8, the second embodiment includes first and second conveyor belt displacement sensors 36 A and 36 B and a plurality of conveyed object upper surface displacement sensors 38.

The first and second conveyor belt displacement sensors 36 A and 36 B detect positions at both ends in the width direction of the conveyor belt 16 with respect to a predetermined reference position as conveyor belt positions, and supply the detection results to the control device 26. It constitutes a conveyor belt position detecting means.

The plurality of transport object upper surface displacement sensors 38 detect the distance from the upper reference line L0 extending in parallel with the width direction above the conveyor belt 16 to the upper surface of the transport object 2 as the transport object upper surface position over the width direction. The detection result is supplied to the control means, and constitutes the conveyed object upper surface position detection means.
In the present embodiment, the plurality of transport object upper surface displacement sensors 38 are arranged at equal intervals along the width direction.

The control device 26 realizes the calculation means 40 and the drive control means 34 when the CPU executes the control program.

The calculating means 40 determines the conveyor belt 16 based on the conveyor belt position detected by the first and second conveyor

belt displacement sensors

36A, 36B and the conveyed object upper surface position detected by the plurality of conveyed object upper surface displacement sensors 38. The relative position of the transported object 2 placed on the conveyor belt 16 is calculated.

Therefore, in the second embodiment, the first and second conveyor

belt displacement sensors

36A and 36B (conveyor belt position detecting means), a plurality of conveyed object upper surface displacement sensors 38 (conveyed object upper surface position detecting means), and computation. The means 40 constitutes a relative position detecting means for detecting the relative position of the conveyed product 2 placed on the conveyor belt 16 with respect to the conveyor belt 16 in the width direction of the conveyor belt 16.

Similarly to the first embodiment, the drive control unit 34 supplies a control signal to the drive unit 30 of the transport object moving mechanism 24 based on the relative position of the transport object 2 detected by the relative position detection unit. Thus, the position in the width direction of the transported object 2 is moved.
Therefore, also in the second embodiment, the transport that moves the position of the transported object 2 in the width direction based on the detected relative position of the transported object 2 by the transported object moving mechanism 24 and the drive control means 34. An object moving means is configured.

Next, the effect of the belt conveyor apparatus 10 is demonstrated.
First, as shown in FIG. 8, the initial conveyor in the width direction of the conveyor belt 16 is detected by the first and second conveyor belt displacement sensors 36 A and 36 B in a state where the conveyed product 2 is not placed on the conveyor belt 16. The position of the belt 16 is detected, and the upper surface position of the conveyor belt 16 in the state where there is no transported material 2 is detected by a plurality of transported material upper surface displacement sensors 38 and registered in the calculation means 40.

Next, when the conveyed product 2 is placed on the conveyor belt 16 and the conveyor belt 16 travels, the conveyor in the width direction of the conveyor belt 16 detected by the first and second conveyor

belt displacement sensors

36A and 36B. The belt position and the transported object upper surface position detected by the plurality of transported object upper surface displacement sensors 38 are supplied to the calculation means 40.

The calculating means 40 compares the registered initial position of the conveyor belt 16 with the currently detected conveyor belt position, and detects the current position of the upper surface of the conveyor belt 16 in the absence of the transported object 2. Compare the upper surface position of the transported material. And the relative position of the conveyed product 2 is calculated based on the comparison result of a conveyor belt position, and the comparison result of a conveyed product upper surface position.

The drive control means 34 controls the drive means 30 based on the calculated relative position of the transported object 2 to change the direction of the swing plate 28 as in the first embodiment. Accordingly, when the transported object 2 is deviated in the width direction of the conveyor belt 16 as shown by a solid line in FIG. 9, the transported object 2 is moved to the center of the conveyor belt 16 as shown by a two-dot chain line. .

Therefore, in the second embodiment, as in the first embodiment, it is advantageous in securing the durability of the edge of the conveyor belt 16 while stabilizing the running of the conveyor belt 16.
In the second embodiment, since a relatively inexpensive displacement sensor is used in place of the imaging device 22 of the first embodiment, it is advantageous in reducing the cost.

2 ... Conveyed material, 10 ... Belt conveyor device, 12 ... Drive pulley, 14 ... Driven pulley, 16 ... Conveyor belt, 18 ... Chute, 20 ... Traflora, 20A ... Center roller, 20B, 20C: Inclined roller, 22: Imaging device, 24: Carrying object moving mechanism, 26: Control device, 28 ... Swing plate, 30 ... Driving means, 3002 ... Air cylinder, 3002A ... Piston rod , 3004... Rod, 31... Support shaft, 32... Analyzing means, 34... Drive control means, 36 A. First conveyor belt displacement sensor, 36 B. Carrying object upper surface displacement sensor, 40 ... calculating means.

Claims

A belt conveyor device comprising an endlessly formed conveyor belt and a trough flora that supports the conveyor belt in a trough shape,
A relative position detecting means for detecting a relative position of a transported object placed on the conveyor belt with respect to the conveyor belt in a width direction orthogonal to a traveling direction of the conveyor belt;
A transport object moving means for moving the position of the transport object in the width direction based on the relative position of the detected transport object;
A belt conveyor apparatus comprising:
The relative position detection means, imaging means for imaging the conveyor belt and the transported object from above the conveyor belt to generate image information;
Analyzing means for calculating a relative position of the transported object by analyzing the image information;
The belt conveyor apparatus according to claim 1.
The relative position detecting means includes
Conveyor belt position detecting means for detecting a position in the width direction of the conveyor belt with respect to a reference position as a conveyor belt position;
A transport object upper surface position detecting means for detecting a distance from an upper reference line extending in parallel with the width direction above the conveyor belt to an upper surface of the transport object as a transport object upper surface position over the width direction;
Calculating means for calculating a relative position of the transported object based on the detected conveyor belt position and the detected transported object upper surface position;
The belt conveyor apparatus according to claim 1.
The conveyor belt position detecting means includes first and second conveyor belt displacement sensors that detect positions of both ends in the width direction of the conveyor belt with respect to a predetermined reference position as the conveyor belt positions.
The transported object upper surface position detecting means is composed of a plurality of transported object upper surface displacement sensors arranged at equal intervals along the width direction of the conveyor belt.
The belt conveyor apparatus according to claim 3.
The transporting means includes a swing plate with both sides in the thickness direction facing the width direction of the conveyor belt on the conveyor belt, and a direction of both sides of the swing plate on the conveyor belt in the thickness direction. And drive means for swinging so as to change,
The belt conveyor device according to any one of claims 1 to 4, wherein