AU2005201032A1 - Non-contact type conveyer belt sensing apparatus - Google Patents
Non-contact type conveyer belt sensing apparatus Download PDFInfo
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- AU2005201032A1 AU2005201032A1 AU2005201032A AU2005201032A AU2005201032A1 AU 2005201032 A1 AU2005201032 A1 AU 2005201032A1 AU 2005201032 A AU2005201032 A AU 2005201032A AU 2005201032 A AU2005201032 A AU 2005201032A AU 2005201032 A1 AU2005201032 A1 AU 2005201032A1
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- AU
- Australia
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- conveyer belt
- belt
- conveyer
- contact type
- sensing apparatus
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Description
AUSTRALIA
Patents Act 1990 HAN JIN ENGINEERING CO., LTD.
COMPLETE SPECIFICATION STANDARD PATENT Invention Title: Non-contact type conveyer belt sensing apparatus The following statement is a full description of this invention including the best method of performing it known to us:- SBACKGROUND OF THE INVENTION 00 Field of the Invention The present invention relates to a belt conveyer, and more particularly to, a noncontact type conveyer belt sensing apparatus that senses damage of a conveyer belt of a Sbelt conveyer, caused by cutting in a longitudinal or transverse direction, and stops the Soperation of the belt conveyer.
Description of the Related Art Generally, a belt conveyer has a structure in which an elliptical belt is hung on a driving pulley and a return pulley, its conveying side is supported by a conveying roller, and its return side is supported by a return roller.
Such a belt conveyer is mainly used to convey special raw materials. That is, the belt conveyer is used in sea and land transport lines from a freight compartment of a freight handling system to a desired place, and other facilities.
Particularly, if a conveying distance is long and a conveying direction has to be changed, the belt conveyer includes a plurality of belts not one belt. In this case, shuttle and chute are provided at each portion where the conveying direction is changed, so that conveying materials can be conveyed to other belt conveyers.
A general belt conveyer will be described with reference to the accompanying drawings.
As shown in FIG. 1, a belt conveyer 10 includes a conveyer belt 11 conveying articles, a driving pulley 12 and a return pulley 13 provided at both sides of the conveyer belt 11, a plurality of conveying rollers 14 and return rollers 16 preventing the conveyer belt 11 from sagging by supporting the lower portion of the conveyer belt 11, and a support structure 15 supporting the conveying rollers 14 at a predetermined height.
The conveying rollers 14 are sequentially provided between the driving pulley 12 and the return pulley 13 to prevent the conveyer belt 11 from sagging and smoothly rotate the conveyer belt 11. The return rollers 16 are provided below the conveyer belt 11.
The aforementioned belt conveyer, as shown in FIG. 2, has different positions and shapes depending on an empty state and a full state.
tn 3 In other words, in case that the belt conveyer 10 is operated in an empty state having no load, the lower portion of the conveyer belt 11 ascends at a height by means of its elasticity. In this case, both side ends of the conveyer belt 11 are moved to 00 the position On the other hand, in case that the belt conveyer 10 is operated in a full state full of load, the lower portion of the conveyer belt 11 descends at a height 'h' by means of weight given from the upper portion of the conveyer belt 11 by load of conveying materials. In this case, both side ends of the conveyer belt 11 are moved to Sthe position t The belt conveyer 10 used as above has several problems. If a sharp piece of iron fallen from the chute or an edge of rough stone is hit on the surface of the conveyer belt 11, the conveyer belt 11 may be damaged by cutting in a longitudinal direction in a short time. Cutting due to other reasons may damage the conveyer belt 11.
To avoid such damage, various methods have been developed and used.
However, the methods still have a problem in that life of a sensor becomes short due to its wear and burnout because the sensor or a part of the sensor is in contact with the conveyer belt 11.
Further, the sensor fails to sufficiently exert its function due to meander and the position difference of the conveyer belt caused when the conveyer belt 11 moves in an empty state or a full state. For this reason, a fatal problem occurs in that the sensor fails to sense a defect of the conveyer belt.
SUMMARY OF THE INVENTION Accordingly, the present invention is directed to a non-contact type conveyer belt sensing apparatus that substantially obviates one or more problems due to limitations and disadvantages of the related art.
An object of the present invention is to provide a non-contact type conveyer belt sensing apparatus that performs its sensing function regardless of dust particles generated from materials conveyed by a belt conveyer, or noise or harmful electromagnetic waves generated from other equipments.
Another object of the present invention is to provide a non-contact type conveyer belt sensing apparatus that senses whether a conveyer belt has a problem by identifying a cross-sectional length of the conveyer belt regardless of kinds of materials conveyed.
4 To achieve these objects and other advantages and in accordance with the purpose of the invention, as embodied and broadly described herein, in a belt conveyer including a driving pulley and a return pulley provided to rotate a conveyer belt along 00 Oan elliptical track, the conveyer belt having a plurality of iron cores in a longitudinal direction, and a plurality of conveying rollers provided below the conveyer belt to prevent the conveyer belt from sagging, a non-contact type conveyer belt sensing apparatus includes a sensing device provided at both side ends and the lower portion of the conveyer belt to sense motion and sagging of the conveyer and converting the sensed result into a signal, and a control device comparing an initially set value with the sensed value transmitted from the sensing device, operating the compared result, and determining whether the conveyer belt has a problem, to control the operation of the conveyer belt.
Preferably, the sensing device includes a pair of side sensors interposed between both side ends of the conveyer belt to sense the position of the side ends and a lower sensor positioned at the lower portion of the conveyer belt to sense sagging of the conveyer belt by measuring the height of the lower portion of the conveyer belt.
Preferably, the side sensors are non-contact type sensors.
Preferably, the control device includes a display receiving the signal of the sensing device to allow a user to identify the sensed state of each sensor and a control panel controlling the set state of the sensing device, and a controller controlling the operation of the belt conveyer by operating the set state of the control panel and the signals sensed by the respective sensors, calculating the cross-section length of the conveyer belt, and comparing the operated value with the calculated value.
It is to be understood that both the foregoing general description and the following detailed description of the present invention are exemplary and explanatory and are intended to provide further explanation of the invention as claimed.
BRIEF DESCRIPTION OF THE DRAWINGS The above aspects and features of the present invention will be more apparent by describing certain embodiments of the present invention with reference to the accompanying drawings, in which: FIG. 1 and FIG. 2 illustrate the operational states of a related art belt conveyer; FIG. 3 is a side view illustrating a non-contact type conveyer belt sensing apparatus according to the present invention; FIG. 4 is a front view illustrating side sensors of a non-contact type conveyer belt sensing apparatus according to the present invention; and SFIG. 5 illustrates a structure of a non-contact type conveyer belt sensing 00oO apparatus according to the present invention.
DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS SReference will now be made in detail to the preferred embodiments of the present invention, examples of which are illustrated in the accompanying drawings.
Wherever possible, the same reference numbers will be used throughout the drawings to refer to the same or like parts.
Referring to FIG. 3 to FIG. 5, in a belt conveyer 10 including a driving pulley 12 and a return pulley 13 provided to rotate a conveyer belt 11 along an elliptical track, the conveyer belt 11 having a plurality of iron cores in a longitudinal direction, and a plurality of conveying rollers 14 provided below the conveyer belt 11 to prevent the conveyer belt 11 from sagging, a non-contact type conveyer belt sensing apparatus according to the preset invention includes a sensing device 20 provided at both side ends 17 and the lower portion of the conveyer belt 11 to sense motion and sagging of the conveyer belt 11 and converting the sensed result into a signal, and a control device comparing an initially set value with the sensed value transmitted from the sensing device 20, operating the compared result, and determining whether the conveyer belt 11 has a problem, to control the operation of the conveyer belt 11.
Both side ends 17 of the conveyer belt 11 mean left and right sides of the conveyer belt 11, viewed from conveying materials.
As shown in FIG. 3 and FIG. 4, the belt conveyer 10 may include various peripheral elements to increase usefulness as a conveyer. Examples of the peripheral elements include the driving pulley 12 and the return pulley 13 rotating the conveyer belt 11 and a plurality of conveying rollers 14. Some of the peripheral elements may be omitted. Particularly, the conveying rollers 14 may be omitted if load of conveying materials is small.
Preferably, a piece of iron is inserted into the conveyer belt 11. The conveyer belt 11 is prepared with a rigid material of lightweight. The conveyer belt 11 has certain softness and downwardly sags if load is given thereto. Such sagging is sensed and corrected by the sensing device S6 As shown, the conveyer belt 11 is wound by the driving pulley 12 and the return pulley 13 and has rotational properties in an endless track type. The conveyer belt 11 is 00 sagged at a certain height between the driving pulley 12 and the return pulley 13 by O load of conveying materials. The conveyer belt 11 is prevented from being sagged by the conveying rollers 14.
M For more application, the sensing device 20 is provided at both side ends 17 and the lower portion of the conveyer belt 11 to sense motion and sagging of the conveyer belt 11 and convert the sensed result into a signal.
The sensing device 20 includes a pair of side sensors 30 interposed between both side ends 17 of the conveyer belt 11 to sense the position of both side ends 17 of the conveyer belt 11 and a lower sensor 50 provided at the lower portion of the conveyer belt 11 to sense sagging by measuring the height of the lower portion of the conveyer belt 11.
As described above, both side ends 17 are positioned above a main frame 17' that supports the conveyer belt 11 and mean left and right sides of the conveyer belt 11.
A support member 40 is provided at both side ends 17. The support member 40 is provided with a support rod 41 extended at a certain height and a rotational portion 42.
Each side sensor 30 is hinged on the rotational portion 42.
The support member 40 is provided at left and right sides of the conveyer belt 11 at a certain height. Preferably, the support member 40 is higher than the conveyer belt 11. Particularly, the support member 40 is provided to view an inclined side section 11' of the conveyer belt 11 sagged by load, with a certain distance.
The side sensors 30 are inclined at a certain angle to be parallel with the inclined side section 11' of the conveyer belt 11. Preferably, the side sensors 30 are inclined at a certain distance and a certain angle to sense a highest point and a lowest point of the side section 11' when the conveyer belt 11 moves.
The rotational portion 42 is to adjust the angle of the side sensors 30 and is rotated at a certain angle due to its hinge coupling properties to set the angle of the side sensors The lower sensor 50 is provided on the main frame 17'. Preferably, the lower sensor 50 is positioned at the center of the conveyer belt 11 in a width direction. The lower sensor 50 is to sense degree of sagging of the conveyer belt 11. To sense exact degree of sagging of the conveyer belt 11, it is important to select the position of the lower sensor 50. Therefore, the lower sensor 50 is positioned at the center of the tn 7
O
conveyer belt 11 in a width direction to be spaced apart from the lower portion of the conveyer belt 11 at the position lower than the lowest point of the conveyer belt.
The side sensors 30 and the lower sensor 50 of the sensing device 20 according
OO
to the present invention will be described in more detail.
First, a position sensor having a high sensing area is used as the side sensors and the lower sensor 50. Examples of the position sensor include a photoelectric sensor _based on light, a proximity sensor based on magnetic field or electric field, a (displacement sensor based on supersonic waves or light, and a visual sensor. The photoelectric sensor includes a light-transmitting type, a limited reflection type, a diffused reflection type, and a recurrent reflection type. The proximity sensor includes a high frequency oscillation type, a differential coil type, a magnetic type, and a capacitance type. The visual sensor senses images using a camera and illumination.
The side sensors 30 and the lower sensor 50 are connected with the control device 60 to identify the sensed position state of the conveyer belt 11.
The control device 60 includes a display 62 displaying the operational state of the conveyer belt 11 and a control panel 68 controlling the operational state of the conveyer belt 11. The control device 60 further includes a controller 66 transmitting the operational state of the conveyer belt 11 to the control panel 68 through the display 62 and receiving control commander of the control panel 68.
The control device 60 identifies the position state, height and sagging of the conveyer belt 11 sensed by the side sensors 30 and the lower sensor 50 and operates the position state to a secondary functional formula to calculate the length of an arc. Then, the calculated result is displayed in the display 62.
The control panel 68 identifies the height and the sagging state, motion state of the conveyer belt 11 displayed through the display 62. If it is sensed that the conveyer belt 11 moves beyond a predetermined operational range, the control panel 68 stops the conveyer belt 10 or informs a driver of the sensed result.
Next, the operation of the non-contact type conveyer belt sensing apparatus and its effect will be described in more detail.
First, if conveying materials (not shown) are arranged on conveyer belt 11, the belt conveyer 10 is operated. At this time, the inclined side section 11' of the conveyer belt 11 is recognized as an initial value by the side sensors 30, and the initial value is transmitted to the controller 66. Likewise, the lower sensor 50 recognizes the position state, the height state and the sagging state of the conveyer belt 11 on which 8
O
conveying materials are arranged, as an initial value and then transmits the initial value to the controller 66.
00 The conveyer belt 11 continues to operate, and the sensing device 20 senses that there is a problem. For example, if the conveyer belt 11 is sagged by weight of conveying materials or is cut by some reason and operated in a state that the cut portion is split or overlapped, the sensing device 20 senses such state and transmits the sensed _state to the controller 66.
The controller 66 compares the initial value with the changed state value of the 0conveyer belt 11 and operates the compared result so that the operated value is displayed in the display 62 to allow a user to view it.
Meanwhile, if the operated value is beyond the set operational range, the control panel 68 displays the result in the display 62 and controls the operation of the belt conveyer In other words, as will be apparent from the aforementioned description, the present invention is intended that the belt conveyer 10 is automatically controlled by the sensing device 20 and the control device 60 and at the same time the final result value is displayed to allow the user to recognize it, thereby leading a fully automated system in the industrial field.
Various modified examples can be made to the present invention. For example, the degree of sagging of the conveyer belt 11 may be reset depending on the state, i.e., material of the conveyer belt 11, the sate of conveying materials, and conveying speed to transmit the reset value to the control device 60, so that a fully automated conveying line can be achieved without stopping the conveying line.
As described above, the non-contact type conveyer belt sensing apparatus according to the present invention has the following advantages.
In the non-contact type conveyer belt sensing apparatus, a certain sensing function can be performed regardless of dust particles generated from materials conveyed by the belt conveyer or noise generated from other equipments. In addition, the non-contact type conveyer belt sensing apparatus senses whether the conveyer belt has a problem regardless of kinds of conveying materials and controls the sensed result, so that a fully automated system can be achieved in the industrial field.
The foregoing embodiment and advantages are merely exemplary and are not to be construed as limiting the present invention. The present teaching can be readily applied to other types of apparatuses. Also, the description of the embodiments of the tnt 9 present invention is intended to be illustrative, and not to limit the scope of the claims, and many alternatives, modifications, and variations will be apparent to those skilled in the art.
00 C0
Claims (4)
1. In a belt conveyer including a driving pulley and a return pulley provided to 00 0rotate a conveyer belt along an elliptical track, the conveyer belt having a plurality of iron cores in a longitudinal direction, and a plurality of conveying rollers provided C. below the conveyer belt to prevent the conveyer belt from sagging, a non-contact type Sconveyer belt sensing apparatus comprising: (a sensing device provided at both side ends and the lower portion of the conveyer belt to sense motion and sagging of the conveyer and converting the sensed result into a signal; and a control device comparing an initially set value with the sensed value transmitted from the sensing device, operating the compared result, and determining whether the conveyer belt has a problem, to control the operation of the conveyer belt.
2. The non-contact type conveyer belt sensing apparatus according to claim 1, wherein the sensing device includes a pair of side sensors interposed between both side ends of the conveyer belt to sense the position of the side ends and a lower sensor positioned at the lower portion of the conveyer belt to sense sagging of the conveyer belt by measuring the height of the lower portion of the conveyer belt.
3. The non-contact type conveyer belt sensing apparatus according to claim 2, wherein the side sensors are non-contact type sensors.
4. The non-contact type conveyer belt sensing apparatus according to claim 1, wherein the control device includes a display receiving the signal of the sensing device to allow a user to identify the sensed state of each sensor and a control panel controlling the set state of the sensing device, and a controller controlling the operation of the belt conveyer by operating the set state of the control panel and the signals sensed by the respective sensors, calculating a cross-section length of the conveyer belt, and comparing the operated value with the calculated value. DATED this 8th day of March 2005 HAN JIN ENGINEERING CO. LTD. Patent Attorneys for the Applicant: F.B. RICE CO.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| AU2005201032A AU2005201032A1 (en) | 2005-03-08 | 2005-03-08 | Non-contact type conveyer belt sensing apparatus |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| AU2005201032A AU2005201032A1 (en) | 2005-03-08 | 2005-03-08 | Non-contact type conveyer belt sensing apparatus |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| AU2005201032A1 true AU2005201032A1 (en) | 2006-09-28 |
Family
ID=37075400
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| AU2005201032A Abandoned AU2005201032A1 (en) | 2005-03-08 | 2005-03-08 | Non-contact type conveyer belt sensing apparatus |
Country Status (1)
| Country | Link |
|---|---|
| AU (1) | AU2005201032A1 (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113023293A (en) * | 2021-02-08 | 2021-06-25 | 精锐视觉智能科技（深圳）有限公司 | Inspection method, device, equipment and system for belt conveyor |
| CN113071882A (en) * | 2021-03-16 | 2021-07-06 | 江苏科比泰智能科技有限公司 | Multi-direction operating convenient belt conveyor fault detection protection system |
-
2005
- 2005-03-08 AU AU2005201032A patent/AU2005201032A1/en not_active Abandoned
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113023293A (en) * | 2021-02-08 | 2021-06-25 | 精锐视觉智能科技（深圳）有限公司 | Inspection method, device, equipment and system for belt conveyor |
| CN113071882A (en) * | 2021-03-16 | 2021-07-06 | 江苏科比泰智能科技有限公司 | Multi-direction operating convenient belt conveyor fault detection protection system |
| CN113071882B (en) * | 2021-03-16 | 2023-02-10 | 江苏科比泰智能科技有限公司 | Multi-direction operating convenient belt conveyor fault detection protection system |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| MK4 | Application lapsed section 142(2)(d) - no continuation fee paid for the application |