JP2838679B2 - Conveyor equipment - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a conveyor device for transporting loose objects between a pair of belts, and more particularly to a conveyor device having an improved function of detecting abnormalities such as spillage and meandering of a belt.

[0002]

2. Description of the Related Art In a conveyor device for transporting bulk materials such as coal and grains between a pair of belts vertically or steeply, the transport cross-section formed between the pair of belts depends on the physical properties of the bulk materials. If the transport cross section is larger than the appropriate transport cross-sectional shape, it may cause spillage of the load, meandering of the belt leading to derailing, and the like. In view of this, a conveyor device has been proposed (Japanese Utility Model Laid-Open No. 3-21016) in which means for measuring the amount of deformation of the belt is provided in the middle of the conveying path, and the conveyor is conveyed while constantly monitoring the conveying amount of the loose objects based on the measured values. ing.

[0003]

However, in the above-mentioned conveyor device, the actual conveying cross-sectional shape of the belt and the occurrence of the meandering of the belt cannot be known only by monitoring the conveying amount of the bulk material. It is impossible to determine in real time whether or not an article is being properly transported.

It is an object of the present invention to provide a conveyor device having a function of displaying the actual transport cross-sectional shape of a belt on a display and displaying an abnormal display when the actual transport cross-sectional shape deviates from the proper transport cross-sectional shape.

Another object of the present invention is to provide a conveyor device capable of detecting belt meandering in real time.

[0006]

SUMMARY OF THE INVENTION The present invention is directed to a conveyor apparatus for transporting a bulk material between a trough side belt and a seal side belt, wherein at least a portion where the trough side belt and the seal side belt overlap is provided. Deformation amount measuring means provided at one measurement point and measuring the deformation amount of the seal side belt at a plurality of points, and conveyance amount measurement provided at the receiving side of the bulk material and measuring the bulk amount of the bulk material Means,
An operation of calculating an actual transport cross-sectional shape formed between the trough-side belt and the seal-side belt at the measurement point based on the measured deformation amount, and calculating the measurement point from the measured transport amount. And performing an operation of determining an appropriate transport cross-sectional shape in the overlapped display of the actual transport cross-sectional shape and the appropriate transport cross-sectional shape on a display. An operation management control unit for displaying an abnormality when the sectional shape is different from the sectional shape is provided.

[0007] The operation management control unit uses a storage device in which the correspondence between the measured transport amount and the appropriate transport cross-sectional shape at the measurement point is stored in advance, and the appropriate transport cross-section at the measurement point is used. The shape is determined.

Further, the deformation amount measuring means is provided at a plurality of measuring points, and the operation management control unit stores
It stores a correspondence relationship between the measured transport amount different for each measurement point and an appropriate transport cross-sectional shape at the measurement point, and enables an overlap display on the display to be switched and displayed for each of the plurality of measurement points. It is characterized by having been done.

On the other hand, the carry amount measuring means measures the carry amount from detection signals from the weight detecting means for detecting the weight of the bulk material to be carried and the speed detecting means for detecting the carrying speed.

It is preferable that a belt meandering measuring means for measuring a belt meandering state is further provided at the measurement point.

The belt meandering measuring means includes a first detector for detecting a widthwise deviation of the trough-side belt and a second detector for detecting a widthwise deviation of the seal-side belt. The operation management control unit includes, for the seal side belt, a storage device that stores in advance a correspondence relationship between the measured transport amount and an appropriate shift amount in the width direction of the seal side belt at the measurement point. To measure the meandering state of the belt.

[0012]

Embodiments of the present invention will be described below with reference to the drawings. FIG. 1 shows a schematic configuration of a conveyor device to which the present invention is applied. Briefly,
The bulk material received from the receiving chute 10 is sandwiched between the trough-side belt 11 and the seal-side belt 12 and transported to the transport destination chute 13. In the transport path, while restricting the positions of the trough side belt 11 and the seal side belt 12,
Many rollers 1 that guide the belt and define the transport path
4, 15 are arranged. A plurality of rollers 16 and 17 having functions of guiding and driving the belt are also arranged on the return path of the trough side belt 11 and the seal side belt 12. In the return path, a roller 1 with a sword for adjusting the slack state of the trough side belt 11 and the seal side belt 12 is also provided.
8 and 19 are provided. The trough-side belt 11 and the seal-side belt 12 are overlapped with each other at a position 21 on the receiving side and separated at a position 22 on the transfer destination side.

In the present embodiment, the deformation measuring devices 31, 32, 3 are provided at three positions where the trough-side belt 11 and the seal-side belt 12 are overlapped, that is, at a vertical portion of the transport path.
3 and belt meandering measuring devices 41, 42 and 43, and a belt scale 45 is provided on the trough side belt 11 on the receiving side. The belt scale 45 includes a weight detector such as a load cell for detecting the weight of the bulk material on the trough side belt 11 and a speed detector (neither is shown) for detecting the transport speed of the trough side belt 11. Based on the obtained weight and speed, the transport amount of the bulk material per unit time is calculated.

The deformation measuring device 31 will be described with reference to FIGS. A trough carrier frame 51 is provided on the conveyor frame 50. A roller (corresponding to the roller 14 in FIG. 1) having a set of three rollers 14-1, 14-2, and 14-2 for guiding the trough-side belt 11 and a seal-side belt 12 are provided on the trough carrier frame 51. A roller (corresponding to the roller 15 in FIG. 1), which is a set of two ear pressing rollers 15-1 for holding both sides, is attached. The roller 14-2 is inclined with respect to the roller 14-1, so that a space for accommodating the loose objects 52 can be formed in the trough side belt 11. The trough-side belt 11 does not deform even if the transport amount of the bulk material changes, and the seal-side belt 12 deforms according to the transport amount of the bulk material 52. It is for this reason that the seal side belt 12 is pressed only by the ear pressing rollers 15-1 on both sides.

The deformation measuring device 31 has a plurality of movable contact needles 31-1 arranged horizontally at the measuring point. The contact needle 31-1 is attached to the trough carrier frame 5.
1 can be freely moved in and out of the support portion 31-2 attached to
The tip of the contact needle 31-1 moves according to the deformation of the seal side belt 12, and the movement amount is measured as the deformation amount of the seal side belt 12. Since the plurality of contact needles 31-1 are arranged at equal intervals in the horizontal direction, that is, in the width direction of the seal-side belt 12, the seal-side belt 1
2 is measured over the width direction. In other words, the space formed between the virtual connection line connecting the tips of the plurality of contact needles 31-1 and the trough-side belt 11 whose shape does not change can be measured as the actual transport cross-sectional shape.

FIG. 4 shows a state when a plurality of contact needles 31-1 in the deformation measuring device 31 are unloaded (FIG. A) and a state when a load is applied (FIG. B). When no load is applied, the seal-side belt 12 is in close contact with and overlaps the trough-side belt 11, and all the contact needles 31-1 have a movement amount of zero. At the time of load, the seal-side belt 12
Bulges or shrinks and deforms, and the larger the amount of deformation, the larger the amount of movement of the contact needle 31-1. Contact needle 31
The movement amount of -1 is converted into an electric signal and sent to an operation management control unit (not shown). In the operation management control unit, each contact needle 3
A plurality of contact needles 31- based on the electric signal from
The actual transport cross-sectional shape formed between the virtual connection line connecting the front ends of the first and the trough-side belt 11 is calculated. The operation management unit displays the calculated actual transport cross-sectional shape on a display (not shown).

The operation management control unit also includes a belt scale 4
An appropriate transport cross-sectional shape is stored in advance in a built-in storage device in relation to the transported amount of the bulk material measured in step 5. That is, a plurality of ranges are set for the assumed transport amount, and the plurality of appropriate transport cross-sectional shapes are stored in advance in a one-to-one correspondence between the plurality of ranges and the appropriate transport cross-sectional shapes.

The correspondence between the amount of bulk material transported and the appropriate transport cross-sectional shape differs depending on the height of the measuring point on the belt conveyor. This is because, due to gravity, the higher the position of the measurement point, the smaller the appropriate transport cross-sectional shape. Therefore, the operation management control unit sets, for each of the deformation amount measuring devices 31, 32, and 33,
Information indicating the correspondence between the transport amount measured by the belt scale 45 and the appropriate transport cross-sectional shape is stored in a storage device in advance. Then, the transport cross-sectional shape at three measurement points is periodically switched and displayed on the display. From this, it is possible to grasp on which side of the transport path having a certain length the abnormality may occur.

When the transport amount, which is the belt scale 45, is measured, the operation management controller reads out the appropriate transport cross-sectional shape from the storage device and displays it on the display. The actual transport cross-sectional shape calculated by the signal is displayed so as to overlap with the appropriate transport cross-sectional shape. FIG. 5 shows a display example on a display. In the figure,
The solid line indicates the appropriate transport cross section, and the dashed line indicates the actual transport cross section. The operation management control unit calculates and compares the area of the displayed appropriate transport cross-sectional shape with the area of the actual transport cross-sectional shape, and determines that the area of the actual transport cross-sectional shape is smaller than the area of the appropriate transport cross-sectional shape. If the value deviates by only the value or the cross-sectional shape is different, it is determined that there is a possibility of spillage or belt meandering, etc.
Stop the conveyor operation.

On the display, in addition to the transport cross-sectional shape as described above, information on the transport amount, the power and current of the motor used in the transport system, the load spill amount described later, and the belt meandering are displayed. In addition to the above-mentioned display, a printer for printing out various information is provided, and daily operation management information is recorded.

The operation management control section also calculates the transport amount of bulk materials from each of the actual transport cross-sectional shapes calculated based on the detection signals from the three deformation amount measuring devices 31 to 33, and calculates the average value thereof. Is calculated. Then, the average transport amount is compared with the transport amount measured by the belt scale 45, and if the average transport amount is smaller, the difference is calculated as the load spill amount.

Next, the belt meandering measuring device will be described with reference to FIG. The belt meandering measuring device is a first detector 41 that detects a displacement of the trough side belt 11 in the width direction.
-1 and a second detector 41-2 for detecting the displacement of the seal-side belt 12 in the width direction. The first and second detectors 41-1 and 41-2 may be of the same type as the contact needle type of the deformation amount measuring device described above, and are provided at positions on one side of the respective belts and opposite to each other. It should be noted that if they are slightly shifted, they can be provided on the same side.

The position of the trough side belt 11 in the width direction does not change in a normal state. In other words, when the trough side belt 11 is shifted in the width direction, it is detected as the meandering of the trough side belt 11 by the first detector 41-1. On the other hand, FIG.
As can be understood from (b), the position of the side is changed by expanding or contracting according to the transport amount of the bulk material 52. This means that the meandering of the seal-side belt 12 cannot be detected only by the second detector 41-2.

Therefore, in the operation management control section, the correspondence between the transport amount at each measurement point and the appropriate shift amount to be detected by the second detector is stored in the storage device in advance. . And the deformation amount measuring devices 31 to 33
When the transport amount at each measurement point is calculated from the detection signal, an appropriate shift amount corresponding to the calculated amount is read from the storage device, and is compared with the actual shift amount detected by the second detector. As a result of the comparison, if the actual shift amount is larger than the appropriate shift amount, the operation management control unit determines that meandering has occurred in the seal-side belt 12, and the difference between the two, that is, the meandering amount is If it exceeds a certain value, an alarm is generated or the conveyor device is stopped. As described above, in the present invention,
In addition to displaying the transported state of the bulk material in the form of a transport cross section, the meandering state of the trough-side belt and the seal-side belt can also be detected.

[0025]

As described above, according to the present invention, not only the transport amount is calculated, the transport state of at least one location on the transport path is calculated as the transport cross-sectional shape, but also the meandering state of the belt is detected. In addition, the power and current values of the belt driving unit can be continuously measured and displayed on a display for total operation monitoring.
As a result, the following effects can be expected in the conveyor device according to the present invention.

A. Driving in accordance with the physical properties of various bulk materials becomes possible.

B. The operating state such as the conveying state and the meandering state of the belt can be grasped remotely.

C. Since continuous recording by a printer is possible, it can be stored as daily operation management information.

[Brief description of the drawings]

FIG. 1 is a diagram for explaining a schematic configuration of a conveyor device to which the present invention is applied.

FIG. 2 is an enlarged view of a portion A in FIG. 1;

FIG. 3 is a view of the part of FIG. 2 viewed from the direction of arrow B.

FIG. 4 is a diagram for explaining a deformation measuring device used in the present invention.

FIG. 5 is a diagram showing an example of display display according to the present invention.

FIG. 6 is a diagram for explaining a belt meandering measuring device used in the present invention.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 10 Receiving chute 11 Trough side belt 12 Seal side belt 13 Destination chute 14, 15, 16, 17 Roller 31, 32, 33 Deformation measuring device 31-1 Contact needle 31-2 Supporting part 41, 42, 43 Belt meandering Measuring device 41-1 First detector 41-2 Second detector 52 Bulk material

────────────────────────────────────────────────── ─── Continuation of the front page (56) References JP-A-7-277473 (JP, A) JP-A-6-329223 (JP, A) JP-A-3-21016 (JP, U) (58) Survey Field (Int.Cl. ⁶ , DB name) B65G 15/18 B65G 43/02

Claims (6)

(57) [Claims] 1. A conveyor device for transporting a loose object between a trough side belt and a seal side belt, wherein the trough side belt and the seal side belt are provided at at least one measurement point where they overlap. Deformation amount measuring means for measuring the deformation amount of the seal-side belt at a plurality of points; conveying amount measuring means provided on the receiving side of the bulk material for measuring the bulk amount of the bulk material; and the measured deformation An operation of calculating an actual transport cross-sectional shape formed between the trough-side belt and the seal-side belt at the measurement point based on an amount, and an appropriate transport cross-section at the measurement point from the measured transport amount. Performing the operation of determining the shape, and displaying the actual transport cross-sectional shape and the appropriate transport cross-sectional shape on the display in an overlapped manner; A conveyor device comprising: an operation management control unit for performing an abnormal display when a surface shape is different from the appropriate transport cross-sectional shape. 2. The conveyor device according to claim 1, wherein
The operation management control unit uses a storage device that stores in advance the correspondence between the measured transport amount and the appropriate transport cross-sectional shape at the measurement point, and performs a determination operation of the appropriate transport cross-sectional shape at the measurement point. A conveyor device characterized by performing: 3. The conveyor device according to claim 2, wherein
The deformation amount measurement means is provided at a plurality of measurement points, the operation management control unit, the storage device, the measured transport amount different for each measurement point and the appropriate transport cross-sectional shape at the measurement point A conveyor device, wherein a correspondence relationship is stored, and an overlap display on the display can be switched and displayed for each of the plurality of measurement points. 4. The conveyor device according to claim 1, wherein said conveyance amount measuring means detects a weight of the bulk material being conveyed, and a speed detection means for detecting a conveyance speed thereof. A conveyor device for measuring a conveyance amount from a detection signal from a means. 5. The conveyor device according to claim 1, further comprising a belt meandering measuring means for measuring a meandering state of the belt at the measurement point. 6. The conveyor device according to claim 5, wherein
The belt meandering measurement unit includes a first detector that detects a displacement of the trough-side belt in a width direction, and a second detector that detects a displacement of the seal-side belt in a width direction, The operation management control unit uses a storage device that stores in advance a correspondence relationship between the measured transport amount and the appropriate shift amount in the width direction of the seal side belt at the measurement point for the seal side belt, A conveyor device for measuring a meandering state of a belt.