WO2008025305A1 - Method for monitoring a conveyor device and facility for carrying out said method - Google Patents
Method for monitoring a conveyor device and facility for carrying out said method Download PDFInfo
- Publication number
- WO2008025305A1 WO2008025305A1 PCT/DE2006/001517 DE2006001517W WO2008025305A1 WO 2008025305 A1 WO2008025305 A1 WO 2008025305A1 DE 2006001517 W DE2006001517 W DE 2006001517W WO 2008025305 A1 WO2008025305 A1 WO 2008025305A1
- Authority
- WO
- WIPO (PCT)
- Prior art keywords
- dancer roll
- deflection
- value
- belt
- monitoring
- Prior art date
Links
Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
- B65G—TRANSPORT OR STORAGE DEVICES, e.g. CONVEYORS FOR LOADING OR TIPPING, SHOP CONVEYOR SYSTEMS OR PNEUMATIC TUBE CONVEYORS
- B65G43/00—Control devices, e.g. for safety, warning or fault-correcting
- B65G43/02—Control devices, e.g. for safety, warning or fault-correcting detecting dangerous physical condition of load carriers, e.g. for interrupting the drive in the event of overheating
Definitions
- the invention relates to a method for monitoring a device for continuously conveying an elongated product, for example a wire, a rope, a belt or a belt, and a device suitable for carrying out the method.
- conveyor belts are a fundamental design element. The most important element of a conveyor belt is the conveyor belt, an endless, circulating on idlers or slideways band that serves as a carrier and at the same time as a traction device. It is often driven by friction of one or more drive rollers. Conveyor belts are often stretched over so-called dancer rollers, which compensate for a fluctuating train with their lifting movement.
- the invention has for its object to provide a method and a device for monitoring a conveyor, which make it possible to issue an early warning for impending tearing of an elongated product to be conveyed, for example a conveyor belt, before the conveyor stops.
- the invention is based on the recognition that a conveyed elongate material, for example a conveyor belt of a packaging machine, already changes its mechanical properties, for example its elongation or its elastic properties, some time before tearing. This change can be evaluated by determining and evaluating the deflection of the dancer roll and advantageously deriving therefrom a diagnosis statement.
- a predictive maintenance it is made possible by the invention to already detect a faulty state of a conveyor before it comes to a significant failure or failure of the conveyor. An unplanned downtime, for example, of a packaging machine can thus be avoided and maintenance can be carried out, for example, in cyclic maintenance intervals in which a repair or an exchange of the conveyor belt can be made without further production failures. There are hardly any additional
- the frequency of vibrations in particular of the oscillations with maximum amplitude, can be determined on the basis of the course of the deflection of the dancer roll and used as a characteristic variable.
- a change in the elongation leads, for example, in a conveyor belt to a change in the rigidity and thus to a shift in the frequencies of the movements of the dancer roll. Based on this size can thus also be obtained a diagnosis of the condition of a conveyor belt.
- a comparison with a specimen-specific reference value is made possible in an advantageous manner when the reference value is determined and stored during the commissioning of the conveyor and thus in the good state. This can further improve the reliability of the diagnostic statement.
- Conveyor 1 with an endless, on two support rollers 2 and 3 circulating conveyor belt 4, as it is used for example in packaging machines, shown.
- a dancer roller 5 on which a tensile force is exerted with a spring 6, the tension of the conveyor belt 4 is adjusted.
- the dancer roller 5 compensates with its strokes length changes of the conveyor belt 4 and ensures a constant tension of the belt 4.
- the respective deflection of the dancer roller 5 is determined by a distance sensor 7 and passed to an electronic evaluation device 8.
- the tensile force exerted on the dancer roller 5 by the spring 6 can be detected by a force sensor 9 and reported to the electronic evaluation device 8, as shown in the figure by an arrow 10 marked with broken lines.
- this force acts approximately proportionally to the deflection of the dancer roll 5 and thus likewise represents a measured value representing the deflection of the dancer roll 5.
- the conveyor belt 4 can break. This tearing is preceded by an elongation of the conveyor belt 4, which can be detected and evaluated with the distance sensor 7 and / or the force sensor 9 with the aid of the electronic evaluation device 8.
- a course of measured values of the deflection of the dancer roller 5 is stored in a memory 12 in the electronic evaluation unit 8 by means of a microcontroller 11.
- the moving average value is calculated and compared with a reference value which was determined during the commissioning of the conveyor belt 1, that is to say when the conveyor belt 4 was new, and stored in a memory 13. If the deviation, that is, the difference between the current moving average and the stored reference value, a predetermined threshold exceeds, so this indicates an impending error of the conveyor belt 4 and it is issued a corresponding warning as a display signal 14.
- the threshold value is selected on the one hand such that the monitoring device does not react too sensitively, and on the other hand that errors are already detected before they occur. Furthermore, it can be deduced from the tendency of consecutively determined values of the moving average value whether a failure of the conveyor belt 1 is to be expected in the period until the next maintenance cycle or not. Unforeseen downtimes can therefore be largely avoided and thus the productivity of a packaging machine equipped with such a monitoring device can be increased.
Abstract
Description
Claims
Priority Applications (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
PCT/DE2006/001517 WO2008025305A1 (en) | 2006-08-30 | 2006-08-30 | Method for monitoring a conveyor device and facility for carrying out said method |
DE112006004106T DE112006004106A5 (en) | 2006-08-30 | 2006-08-30 | Method for monitoring a conveying device and device for carrying out the method |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
PCT/DE2006/001517 WO2008025305A1 (en) | 2006-08-30 | 2006-08-30 | Method for monitoring a conveyor device and facility for carrying out said method |
Publications (1)
Publication Number | Publication Date |
---|---|
WO2008025305A1 true WO2008025305A1 (en) | 2008-03-06 |
Family
ID=38006927
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
PCT/DE2006/001517 WO2008025305A1 (en) | 2006-08-30 | 2006-08-30 | Method for monitoring a conveyor device and facility for carrying out said method |
Country Status (2)
Country | Link |
---|---|
DE (1) | DE112006004106A5 (en) |
WO (1) | WO2008025305A1 (en) |
Cited By (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
CN102234021A (en) * | 2010-04-24 | 2011-11-09 | 徐州泰荣煤矿设备有限公司 | Intelligent anti-reversion protection device for steel rope dragging tape |
CN102259754A (en) * | 2011-04-15 | 2011-11-30 | 徐州华峰测控技术有限公司 | Broken belt catching device with acousto-optical alarm function |
Families Citing this family (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JP6926614B2 (en) * | 2017-04-14 | 2021-08-25 | 横浜ゴム株式会社 | Conveyor belt management system |
Citations (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE2221296A1 (en) * | 1972-04-29 | 1973-11-15 | Filip Kukuruzovitz | SECURITY FOR THE DRIVE OF CONVEYOR BELTS |
DE3131963A1 (en) * | 1981-08-13 | 1983-02-24 | Peter Lancier Maschinenbau-Hafenhütte GmbH & Co KG, 4400 Münster | Conveying system and running-roller monitoring system |
DE4011257A1 (en) * | 1990-04-05 | 1991-01-31 | Andreas Peter | Detector for longitudinal cracks in conveyor belts - has pressure drum to cause gapping of any crack and subsequent cessation of drive |
NL1020527C2 (en) * | 2002-05-03 | 2003-11-04 | Conway Exploitatie En Beheer B | Rising cupboard for bakery products, includes sensor device for detecting any backing up of conveyor chain in drive and tensioning unit for this chain |
-
2006
- 2006-08-30 DE DE112006004106T patent/DE112006004106A5/en not_active Withdrawn
- 2006-08-30 WO PCT/DE2006/001517 patent/WO2008025305A1/en active Application Filing
Patent Citations (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE2221296A1 (en) * | 1972-04-29 | 1973-11-15 | Filip Kukuruzovitz | SECURITY FOR THE DRIVE OF CONVEYOR BELTS |
DE3131963A1 (en) * | 1981-08-13 | 1983-02-24 | Peter Lancier Maschinenbau-Hafenhütte GmbH & Co KG, 4400 Münster | Conveying system and running-roller monitoring system |
DE4011257A1 (en) * | 1990-04-05 | 1991-01-31 | Andreas Peter | Detector for longitudinal cracks in conveyor belts - has pressure drum to cause gapping of any crack and subsequent cessation of drive |
NL1020527C2 (en) * | 2002-05-03 | 2003-11-04 | Conway Exploitatie En Beheer B | Rising cupboard for bakery products, includes sensor device for detecting any backing up of conveyor chain in drive and tensioning unit for this chain |
Cited By (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
CN102234021A (en) * | 2010-04-24 | 2011-11-09 | 徐州泰荣煤矿设备有限公司 | Intelligent anti-reversion protection device for steel rope dragging tape |
CN102259754A (en) * | 2011-04-15 | 2011-11-30 | 徐州华峰测控技术有限公司 | Broken belt catching device with acousto-optical alarm function |
Also Published As
Publication number | Publication date |
---|---|
DE112006004106A5 (en) | 2009-08-20 |
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