NL2011657A - Method and arrangement for determining an elongation state of a conveyor belt. - Google Patents

Method and arrangement for determining an elongation state of a conveyor belt. Download PDF

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Publication number
NL2011657A
NL2011657A NL2011657A NL2011657A NL2011657A NL 2011657 A NL2011657 A NL 2011657A NL 2011657 A NL2011657 A NL 2011657A NL 2011657 A NL2011657 A NL 2011657A NL 2011657 A NL2011657 A NL 2011657A
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NL
Netherlands
Prior art keywords
conveyor belt
recesses
distance
operating
conveyor
Prior art date
Application number
NL2011657A
Other languages
Dutch (nl)
Other versions
NL2011657C2 (en
Inventor
Heino Heitplatz
Original Assignee
Beumer Gmbh & Co Kg
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Beumer Gmbh & Co Kg filed Critical Beumer Gmbh & Co Kg
Publication of NL2011657A publication Critical patent/NL2011657A/en
Application granted granted Critical
Publication of NL2011657C2 publication Critical patent/NL2011657C2/en

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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
    • B65G15/00—Conveyors having endless load-conveying surfaces, i.e. belts and like continuous members, to which tractive effort is transmitted by means other than endless driving elements of similar configuration
    • B65G15/30—Belts or like endless load-carriers
    • B65G15/32—Belts or like endless load-carriers made of rubber or plastics
    • 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

Description

METHOD AND ARRANGEMENT FOR DETERMINING AN ELONGATION STATE OF A CONVEYOR BELT
The invention relates to a method for determining an elongation state of a conveyor belt of a belt conveyor apparatus, a conveyor belt for a belt conveyor apparatus and an arrangement for determining an elongation state of a conveyor belt of a belt conveyor apparatus.
Conveyor belts of belt conveyor apparatuses, especially webbing belts, which are used in continuous conveyors for example, require a defined degree of stretching in order to operate, so that, on the one hand, sufficient frictional contact between a drive cylinder and the conveyor belt is achieved and, on the other hand, unproblematic belt running can be ensured. If the belt is stretched too tightly, it gives rise to excessive forces, especially on drive and deflection cylinders and bearings, as a result of which the latter are damaged. Apart from that, stretching too tightly can damage the belt itself. Conversely, if the belt is not stretched tightly enough, this can cause excessive sagging or undesirably great slip in the belt.
The elongation state of a conveyor belt has to be checked at regular intervals and corrected if necessary. Measuring the elongation of the conveyor belt ought to be possible while the belt conveyor apparatus is in an operative state, since it may otherwise be necessary to relax the conveyor belt and then tension it again, which is time-consuming.
The object of the invention is therefore to improve a method and arrangement for determining an elongation state of a conveyor belt and a conveyor belt suitable for that purpose in such a way that it becomes possible, in a simple, quick, inexpensive and time-saving manner, to determine an elongation state of a conveyor belt without relaxing it first.
With regard to the method, the invention proposes that the conveyor belt should be subjected to a predefined initial longitudinal tension and, in that state, two recesses are introduced into the conveyor belt, proceeding from a conveying surface of the conveyor belt, which, seen in the longitudinal direction of the conveyor belt, are spaced apart from one another by a predefined initial distance, the conveyor belt is subjected to an operating longitudinal tension and in that state a mutual operating spacing of the recesses is determined, and an operating elongation of the conveyor belt is determined as a function of the initial spacing and the operating spacing.
The recesses are preferably introduced by punching.
It is possible for the recesses to be introduced (merely) over part of a local thickness of the conveyor belt, especially over at least 10 %, 25 % or 50 % of the thickness of the conveyor belt. Alternatively, it may be contemplated that the recesses are introduced so as to penetrate completely through the conveyor belt, or in other words in the form of holes.
The recesses may be introduced cylindrically and may be the same or different in diameter, especially having a diameter of 1 mm to 20 mm, especially 1 mm to 5 mm.
The recesses may be introduced with a rectangular or square cross-section, with a side length of the cross-section of 1 mm to 20 mm, especially 1 mm to 5 mm.
The recesses may either be introduced on a longitudinal central axis of the conveyor belt or on a parallel thereto, such as in a marginal region or even immediately adjacent to a longitudinal edge of the conveyor belt, and they may be introduced spaced apart from each other by a distance ranging between 10 cm and 10 m, especially 50 cm to 5 m.
In order to make it easier to find the recesses, it is possible to apply a locating mark adjacent to one or both recesses (in each case), especially as a mark on the conveyor belt which is coloured and/or reflecting and/or concentric to the recess.
If the recesses are introduced over part of a local thickness of the conveyor belt, it may be contemplated that a base of the recess is configured so as to be coloured or reflecting .
The object of the invention is further achieved by a conveyor belt for a belt conveyor apparatus wherein two recesses are introduced into the conveyor belt, proceeding from a conveying surface of the conveyor belt, which, at a predefined longitudinal tension of the conveyor belt, are spaced apart from one another by a predefined initial distance when seen in the longitudinal direction of the conveyor belt.
Finally, the problem underlying the invention is solved by an arrangement for determining an elongation state of a conveyor belt of a belt conveyor apparatus, comprising a conveyor belt in accordance with the invention, especially for carrying out the method of the invention, with a distance measuring device for detecting the operating spacing of the recesses.
The distance measuring device may operate optically or mechanically, wherein, in the latter case, it has two probe tips spaced apart mutually by a variable distance for mechanical engagement in the recesses.
The distance measuring device is preferably configured to be portable. It may include an evaluation unit which determines the operating elongation of the conveyor belt on the basis of a predefined initial spacing and a detected operating spacing.
The invention makes it possible for the elongation state and hence the operating longitudinal tension of a conveyor belt to be measured during uninterrupted operation of the conveyor belt, such as by optically detecting the operating spacing of the recesses, or, in the case of a conveyor belt standing still, by for example mechanically detecting the mutual spacing.
The invention will now be explained by describing a worked embodiment, reference being made to a drawing, in which - Fig. 1 shows a schematic longitudinal section view of a longitudinal portion of a conveyor belt in accordance with the invention, in which two recesses piercing the conveyor belt are introduced, and - Fig. 2 shows a view corresponding to Fig. 1 with recesses only partially penetrating the conveyor belt.
Fig. 1 shows a portion of a conveyor belt 2 in a longitudinal section view cut vertically to a conveying surface 4 of the conveyor belt 2, wherein a conveying direction 5 or longitudinal direction of the conveyor belt runs in the plane of the drawing.
Spaced apart mutually by a distance a, two recesses 6, 8 are introduced right through the conveyor belt, such as by punching. The recesses 6, 8 are preferably round in cross- section, but may also have a differently shaped cross-section, such as rectangular, square or otherwise polygonal. It may also be contemplated that the recesses do not extend completely through the conveyor belt 2, as Fig. 1 shows, but, proceeding from the conveying surface 4, only through part of the thickness of the conveyor belt D, such as through at least 10 %, 25 % or 50 % of D.
Fig. 2 shows an embodiment in which the recesses 6, 8 not only extend merely through part of the thickness of the conveyor belt D, but wherein a flat recess base 10 is provided in addition, which is inclined at an angle to the conveying surface 4, thus facilitating the introduction of the recess by punching.
For easier optical registration of a recess which does not run through the complete thickness of the belt, it may be expeditious to coat the recess base so as to be reflecting.
In the context of the invention,any appropriate degree of spacing may be used as the mutual spacing between the recesses, such as the distance between a centre line of one recess from a centre line of the other recess or, as may make sense in particular in the case of embodiments according to Fig. 2, a mutual distance from parts of the recesses which are easy to detect with measuring technology, in this case the mutual distance a' from opposing vertical surfaces of the two recesses.
When the conveyor belt is subjected to a predefined initial longitudinal tension acting in the longitudinal direction 5, the distance a or a' is an initial spacing, which, in the course of operating at an operating longitudinal tension, grows larger and becomes an operating spacing.
List of reference numerals 2 conveyor belt 4 conveying surface 5 conveying direction (longitudinal direction) 6, 8 recess 10 recess base a, a1 distance between 6, 8 D thickness (of 2)

Claims (13)

1. Werkwijze voor het bepalen van een uitgerekte toestand van een transportband (2) van een transportbandinrichting, met het kenmerk, dat de transportband (2) wordt onderworpen aan een voorafbepaalde initiële langsspanning en, in deze toestand, twee uitsparingen (6, 8) in de transportband (2) aangebracht worden, uitgaande vanaf een transportoppervlak (4) van de transportband (2), welke, gezien in de langsrichting (5) van de transportband (2), op afstand van elkaar zijn opgesteld met een vooraf bepaalde initiële afstand (a, a'), welke transportband wordt onderworpen aan een bedrijfs-langsspanning en in die toestand een onderlinge bedrijfsafstand van de uitsparingen (6, 8) wordt bepaald, en een bedrijfsuitrekking van de transportband (2) wordt bepaald als een functie van de initiële afstand (a, a') en de bedrijfsafstand.Method for determining an elongated state of a conveyor belt (2) of a conveyor belt device, characterized in that the conveyor belt (2) is subjected to a predetermined initial longitudinal tension and, in this state, two recesses (6, 8) are arranged in the conveyor belt (2), starting from a conveyor surface (4) of the conveyor belt (2), which, viewed in the longitudinal direction (5) of the conveyor belt (2), are spaced apart with a predetermined initial distance (a, a '), which conveyor belt is subjected to an operating longitudinal voltage and in that state a mutual operating distance of the recesses (6, 8) is determined, and an operating extension of the conveyor belt (2) is determined as a function of the initial distance (a, a ') and the operating distance. 2. Werkwijze volgens conclusie 1, met het kenmerk, dat de uitsparingen (6, 8) worden aangebracht over een deel van een lokale dikte van de transportband (D) , in het bijzonder over ten minste 10%, 25%, of 50% van de dikte van de transportband (D).Method according to claim 1, characterized in that the recesses (6, 8) are arranged over a part of a local thickness of the conveyor belt (D), in particular over at least 10%, 25%, or 50% of the thickness of the conveyor belt (D). 3. Werkwijze volgens conclusie 1, met het kenmerk, dat de uitsparingen (6, 8) zodanig zijn aangebracht, dat ze volledig door de transportband (2) penetreren.Method according to claim 1, characterized in that the recesses (6, 8) are arranged such that they penetrate completely through the conveyor belt (2). 4. Werkwijze volgens een der voorgaande conclusies, met het kenmerk, dat de uitsparingen (6, 8) cilindrisch zijn aangebracht en dezelfde diameter hebben, in het bijzonder een diameter van 1 mm tot 20 mm, in het bijzonder 1 mm tot 5 mm.Method according to one of the preceding claims, characterized in that the recesses (6, 8) are arranged cylindrically and have the same diameter, in particular a diameter of 1 mm to 20 mm, in particular 1 mm to 5 mm. 5. Werkwijze volgens een der voorgaande conclusies, met het kenmerk, dat de uitsparingen (6, 8) zijn aangebracht aan een longitudinale centrale as van de transportband (2) of aan een parallel daaraan.Method according to one of the preceding claims, characterized in that the recesses (6, 8) are arranged on a longitudinal central axis of the conveyor belt (2) or on a parallel thereof. 6. Werkwijze volgens een der voorgaande conclusies, met het kenmerk, dat de uitsparingen (6, 8) op afstand van elkaar zijn aangebracht met een afstand die ligt tussen 10 cm en 10 m, in het bijzonder 50 cm tot 5 m.Method according to one of the preceding claims, characterized in that the recesses (6, 8) are arranged at a distance from each other with a distance that lies between 10 cm and 10 m, in particular 50 cm to 5 m. 7. Werkwijze volgens een der voorgaande conclusies, met het kenmerk, dat een lokalisatiemerkteken is toegepast op de transportband (2) aangrenzend aan één of beide uitsparingen (6, 8) (in elk geval), in het bijzonder een gekleurd merkteken en/of een merkteken dat concentrisch ten opzichte van de uitsparing (6, 8) is aangebracht.Method according to one of the preceding claims, characterized in that a localization mark is applied to the conveyor belt (2) adjacent to one or both recesses (6, 8) (in each case), in particular a colored mark and / or a mark arranged concentrically with respect to the recess (6, 8). 8. Transportband (2) voor een transportband- inrichting, met het kenmerk, dat twee uitsparingen (6, 8) zijn aangebracht in de transportband, uitgaande vanaf een transportoppervlak (4) van de transportband (2), welke, gezien in de langsrichting (5) van de transportband (2), op afstand van elkaar zijn opgesteld met een vooraf bepaalde initiële afstand (a, a'),A conveyor belt (2) for a conveyor device, characterized in that two recesses (6, 8) are provided in the conveyor belt, starting from a conveyor surface (4) of the conveyor belt (2), which, viewed in the longitudinal direction (5) of the conveyor belt (2), are spaced apart with a predetermined initial distance (a, a '), 9. Samenstel voor het bepalen van een uitgerekte toestand van een transportband (2) van een transportbandinrichting, omvattende een transportband (2) volgens conclusie 8, voor het uitvoeren van de werkwijze volgens conclusie 1, met een afstandmeetinrichting voor het detecteren van de bedrijfsafstand van de uitsparingen (6, 8) .An assembly for determining a stretched state of a conveyor belt (2) of a conveyor belt device, comprising a conveyor belt (2) as claimed in claim 8, for performing the method as claimed in claim 1, with a distance measuring device for detecting the operating distance of the recesses (6, 8). 10. Samenstel volgens conclusie 9, met het kenmerk, dat de afstandmeetinrichting optisch werkzaam is.An assembly according to claim 9, characterized in that the distance measuring device is optically active. 11. Samenstel volgens conclusie 9, met het kenmerk, dat de afstandmeetinrichting mechanisch werkzaam is en twee meetkoppen heeft die met een onderlinge afstand ten opzichte van elkaar zijn opgesteld met een variabele afstand voor mechanisch aangrijpen in de uitsparingen (6, 8).An assembly according to claim 9, characterized in that the distance measuring device is mechanically active and has two measuring heads which are arranged at a mutual distance with respect to each other with a variable distance for mechanical engagement in the recesses (6, 8). 12. Samenstel volgens een der conclusies 9-11, met het kenmerk, dat de afstandmeetinrichting draagbaar uitgevoerd is.12. An assembly according to any one of claims 9-11, characterized in that the distance measuring device is of portable design. 13. Samenstel volgens een der conclusies 9-12, met het kenmerk, dat de afstandmeetinrichting een evaluatie-eenheid omvat, die een longitudinale bedrijfsspanning van de transportband (2) op basis van een vooraf bepaalde initiële afstand (a, a') en een gedetecteerde bedrijfsafstand bepaalt.An assembly according to any one of claims 9-12, characterized in that the distance measuring device comprises an evaluation unit which has a longitudinal operating tension of the conveyor belt (2) on the basis of a predetermined initial distance (a, a ') and a detected operating distance.
NL2011657A 2012-10-22 2013-10-22 Method and arrangement for determining an elongation state of a conveyor belt. NL2011657C2 (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE102012020677 2012-10-22
DE102012020677.1A DE102012020677B4 (en) 2012-10-22 2012-10-22 Method and arrangement for determining an elongation state of a conveyor belt

Publications (2)

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NL2011657A true NL2011657A (en) 2014-04-23
NL2011657C2 NL2011657C2 (en) 2014-11-24

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NL2011657A NL2011657C2 (en) 2012-10-22 2013-10-22 Method and arrangement for determining an elongation state of a conveyor belt.

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NL (1) NL2011657C2 (en)

Family Cites Families (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE2535525A1 (en) 1975-08-08 1977-02-17 Nippon Konbeya K K Expansion control for steel conveyor bands - has sensors, magnets and control system to generate alarm when expansion takes place
GB2281632B (en) 1993-09-02 1996-11-27 Czeslaw Golebiowski Measurement of parameters of elongate moving members
DE10116233A1 (en) 2001-04-02 2002-05-29 Forbo Int Sa Measurement of the elongation of a drive or conveyor belt caused by stretching using a CCD detector arrangement for measuring the relative position of reference markings with two linear sensor arrays
GB2377918B (en) 2001-07-24 2006-02-01 Renold Plc Chain elongation monitoring apparatus and method
JP2008143697A (en) 2006-12-13 2008-06-26 Shinko Electric Ind Co Ltd Belt conveyor device
US8285494B2 (en) 2009-10-20 2012-10-09 Tibor Vozner Conveyor chain monitoring system and method

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Publication number Publication date
DE102012020677B4 (en) 2020-07-02
NL2011657C2 (en) 2014-11-24
DE102012020677A1 (en) 2014-04-24

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HC Change of name(s) of proprietor(s)

Owner name: BEUMER GROUP GMBH & CO. KG; DE

Free format text: DETAILS ASSIGNMENT: CHANGE OF OWNER(S), CHANGE OF OWNER(S) NAME; FORMER OWNER NAME: BEUMER GMBH & CO. KG

Effective date: 20191115

MM Lapsed because of non-payment of the annual fee

Effective date: 20221101