WO2008025306A1 - Procédé pour surveiller un dispositif de transport, et dispositif servant à la mise en oeuvre de ce procédé - Google Patents
Procédé pour surveiller un dispositif de transport, et dispositif servant à la mise en oeuvre de ce procédé Download PDFInfo
- Publication number
- WO2008025306A1 WO2008025306A1 PCT/DE2006/001526 DE2006001526W WO2008025306A1 WO 2008025306 A1 WO2008025306 A1 WO 2008025306A1 DE 2006001526 W DE2006001526 W DE 2006001526W WO 2008025306 A1 WO2008025306 A1 WO 2008025306A1
- Authority
- WO
- WIPO (PCT)
- Prior art keywords
- belt
- value
- monitoring
- detected
- dancer
- 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 belt or a belt, as well as 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 belt circulating on supporting rollers or slideways, which serves as both a support and a traction device. It is often driven by frictional engagement of one or more drive rollers. Conveyor belts are often tensioned by means of so-called dancer rollers, which compensate for a fluctuating tension 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 an elongated material to be conveyed, for example a conveyor belt of a packaging machine, is prevented from completely tearing in the machine
- dancer roll is now replaced by two or more dancer rolls, which are arranged substantially axially one behind the other over the width of the elongated Guts.
- Each dancer roll is coupled with a rotary encoder for detecting the respective angular position.
- a phase shift of the encoder signals which corresponds to a temporal shift in the course of detected angular position values of one rotary encoder relative to the course of detected angular position values of the other rotary encoder, is calculated.
- a change in the phase position indicates a unilaterally starting tearing of the conveyor belt.
- the invention makes it possible to already detect a faulty condition of a conveyor before it leads to a significant disruption or failure of the conveyor. the device comes.
- An unplanned downtime, for example, of a packaging machine can thus often be avoided, and maintenance can be carried out, for example, in cyclic maintenance intervals, in which a repair or replacement of the conveyor belt can be carried out without further production losses. Since hardly any additional sensors are needed, the process can be retrofitted without major mechanical changes, even in the case of packaging machines already in use. In addition to replacing the dancer roll, it is essentially sufficient to supplement a control program of an electronic control of the packaging machine with corresponding program routines.
- a particularly simple evaluation that is insensitive to measurement noise is obtained if the moving average of the determined phase shifts is used as the characteristic variable of the self-adjusting profiles of the detected angular positions.
- 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.
- FIG. 1 shows a conveyor with a device for their monitoring
- Figure 2 is a plan view of two dancer rolls.
- two dancer rollers 5A and 5B of which only the front dancer roller 5A is visible in Figure 1, the tension of the conveyor belt 4 is set.
- Two springs, of which only the front spring 6 is visible in FIG. 1, exert a tensile force on the axes of rotation of the dancer rollers 5A and 5B.
- the dancer rollers 5A and 5B compensate with their strokes length changes of the conveyor belt 4 and ensure a constant tension of the belt 4.
- the respective angular position of the dancer rollers 5A and 5B is detected and transferred to an electronic evaluation device 8.
- the conveyor belt 4 may break. With conveyor belts, tearing often starts at the seam on one side of the belt. It leads to different strains of the two sides of the belt 4 and thus to deviations of the angular position, which is detected with the two encoders 7 and 9.
- courses of measured values of the angular position of the two dancer rollers 5A and 5B are stored in a memory 12 in the electronic evaluation unit 8 by means of a microcontroller 11.
- the phase shift is calculated and compared with a reference value, which is determined at startup of the conveyor belt 1, that is, in the new state of the conveyor belt 4, as the maximum occurring phase shift and in a Memory 13 has been deposited. If the deviation, that is the difference between the currently determined phase shift and the stored reference value, exceeds a predetermined threshold value, this indicates an impending error of the conveyor belt 4 and a corresponding warning is output as the 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.
- other characteristic quantities for the quantitative assessment of changes in the phase angle of the two courses are applicable to each other.
Landscapes
- Control Of Conveyors (AREA)
Abstract
Priority Applications (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
PCT/DE2006/001526 WO2008025306A1 (fr) | 2006-08-30 | 2006-08-30 | Procédé pour surveiller un dispositif de transport, et dispositif servant à la mise en oeuvre de ce procédé |
DE112006004116T DE112006004116A5 (de) | 2006-08-30 | 2006-08-30 | Verfahren zur Überwachung einer Fördereinrichtung sowie Einrichtung zur Durchführung des Verfahrens |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
PCT/DE2006/001526 WO2008025306A1 (fr) | 2006-08-30 | 2006-08-30 | Procédé pour surveiller un dispositif de transport, et dispositif servant à la mise en oeuvre de ce procédé |
Publications (1)
Publication Number | Publication Date |
---|---|
WO2008025306A1 true WO2008025306A1 (fr) | 2008-03-06 |
Family
ID=37671049
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
PCT/DE2006/001526 WO2008025306A1 (fr) | 2006-08-30 | 2006-08-30 | Procédé pour surveiller un dispositif de transport, et dispositif servant à la mise en oeuvre de ce procédé |
Country Status (2)
Country | Link |
---|---|
DE (1) | DE112006004116A5 (fr) |
WO (1) | WO2008025306A1 (fr) |
Families Citing this family (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
CN105883337B (zh) * | 2016-05-05 | 2018-03-13 | 安徽盛运重工机械有限责任公司 | 输送带跑偏检测急停装置 |
Citations (5)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE1225550B (de) * | 1965-12-28 | 1966-09-22 | Beteiligungs & Patentverw Gmbh | Vorrichtung zur Ermittlung von Aufreissschaeden in dem Gurt einer Foerderbandanlage |
US4347993A (en) * | 1979-11-06 | 1982-09-07 | W. J. Industries, Incorporated | Tension monitor means and system |
DE4011257A1 (de) * | 1990-04-05 | 1991-01-31 | Andreas Peter | Erfassungseinrichtung fuer laengsrisse in einem stetig foerdernden gurt eines foerderbandes sowie fuer schieflauf |
DE4130679A1 (de) * | 1991-09-14 | 1993-03-18 | Roland Man Druckmasch | Vorrichtung und verfahren zum verhindern von druckwerkschaeden |
JP2001151331A (ja) * | 1999-11-29 | 2001-06-05 | Anritsu Corp | プリント基板検査装置 |
-
2006
- 2006-08-30 DE DE112006004116T patent/DE112006004116A5/de not_active Withdrawn
- 2006-08-30 WO PCT/DE2006/001526 patent/WO2008025306A1/fr active Application Filing
Patent Citations (5)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE1225550B (de) * | 1965-12-28 | 1966-09-22 | Beteiligungs & Patentverw Gmbh | Vorrichtung zur Ermittlung von Aufreissschaeden in dem Gurt einer Foerderbandanlage |
US4347993A (en) * | 1979-11-06 | 1982-09-07 | W. J. Industries, Incorporated | Tension monitor means and system |
DE4011257A1 (de) * | 1990-04-05 | 1991-01-31 | Andreas Peter | Erfassungseinrichtung fuer laengsrisse in einem stetig foerdernden gurt eines foerderbandes sowie fuer schieflauf |
DE4130679A1 (de) * | 1991-09-14 | 1993-03-18 | Roland Man Druckmasch | Vorrichtung und verfahren zum verhindern von druckwerkschaeden |
JP2001151331A (ja) * | 1999-11-29 | 2001-06-05 | Anritsu Corp | プリント基板検査装置 |
Also Published As
Publication number | Publication date |
---|---|
DE112006004116A5 (de) | 2009-08-13 |
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