EP3746737A1 - Wear indicator for sheet metal construction - Google Patents
Wear indicator for sheet metal constructionInfo
- Publication number
- EP3746737A1 EP3746737A1 EP19702559.6A EP19702559A EP3746737A1 EP 3746737 A1 EP3746737 A1 EP 3746737A1 EP 19702559 A EP19702559 A EP 19702559A EP 3746737 A1 EP3746737 A1 EP 3746737A1
- Authority
- EP
- European Patent Office
- Prior art keywords
- sheet metal
- wear
- metal construction
- indicator
- wear indicator
- Prior art date
- Legal status (The legal status 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 status listed.)
- Pending
Links
Classifications
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01B—MEASURING LENGTH, THICKNESS OR SIMILAR LINEAR DIMENSIONS; MEASURING ANGLES; MEASURING AREAS; MEASURING IRREGULARITIES OF SURFACES OR CONTOURS
- G01B7/00—Measuring arrangements characterised by the use of electric or magnetic techniques
- G01B7/02—Measuring arrangements characterised by the use of electric or magnetic techniques for measuring length, width or thickness
- G01B7/06—Measuring arrangements characterised by the use of electric or magnetic techniques for measuring length, width or thickness for measuring thickness
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N27/00—Investigating or analysing materials by the use of electric, electrochemical, or magnetic means
- G01N27/02—Investigating or analysing materials by the use of electric, electrochemical, or magnetic means by investigating impedance
- G01N27/04—Investigating or analysing materials by the use of electric, electrochemical, or magnetic means by investigating impedance by investigating resistance
Definitions
- the invention relates to a wear indicator for an abrasive claimed sheet metal construction, comprising at least one filler body and at least one provided within the filler body indicator body.
- Abrasively stressed sheet metal structures are used in a wide variety of technical areas.
- corresponding sheet metal constructions can be used in example for pouring bulk material or for lining bulk and / or suction containers. Due to the mechanical wear occurring during their use, a larger wall thickness is usually provided for the corresponding construction than would actually be necessary taking into account the actual mechanical load. This ensures that the construction remains viable or usable even in the event of uncontrolled or excessive wear. At some point in the life of the sheet metal construction, the limit is reached below which their static strength can no longer be guaranteed safely. After this time, damage or perforation of the sheet metal construction as well as possibly of neighboring components can occur. These damages can occur in particular during operation or during use of the sheet metal construction. They make it necessary to at least occasionally check the sheet metal structure for damage, to replace damaged components if necessary, and to eliminate the contamination caused by the damage.
- the wear indicator is intended for an abrasive-stressed sheet metal construction.
- the abrasive stress can be defined as any stress or damage to the sheet metal construction which is caused by components moving relative to the sheet metal construction, such as, for example, mechanical components, bulk material, waste material or, in particular, waste.
- the term of sheet metal construction is to be interpreted broadly and may include any components, in particular metallic or at least partially made of plastic, which may be designed to be flat at least in sections.
- the sheet metal construction can be an integrally manufactured component of a higher-level device such as, for example, a waste collection vehicle.
- the wear indicator comprises at least one filler body and at least one indicator body provided within the filler body.
- two indicator bodies can be arranged one behind the other in a filling body.
- an advance warning and additionally a signal for the decommissioning of the body can be generated.
- the filler body may occupy a volume within the sheet metal construction or be and / or the indicator body may be at least partially disposed within the packing.
- the indicator body may alternatively or additionally be arranged at least partially outside the filling body.
- the filler is to be storable at least partially within a passage or a recess of the sheet metal structure.
- the filler comprises a potting compound.
- This potting compound can, for example, be poured into the passage or recess of the sheet metal construction in a liquid form for the purpose of setting the wear indicator and cured therein.
- the indicator body can be introduced in the liquid state of the potting compound in this, after which the potting compound can be cured and thus fixed the indicator body safely and / or at a defined position within the sheet metal structure.
- the filler body can be made flush with the sheet metal construction and in particular flat on at least one side.
- the indi cator body comprises at least one wire which is guided in particular by the Medkör per.
- the indicator body can also consist of the wire.
- the wire may of course comprise a different Ummante- of the packing and / or be performed, for example, U-shaped through the packing. The two legs of the U-shaped wire can enter or leave the same on the flat side of the filling body.
- a bore can also be subsequently added to an already completed or used part of a sheet metal construction, for example, a waste collection vehicle subsequently. This makes it possible to easily retrofit a wear indicator on an existing device.
- the indicator body it is conceivable for the indicator body to be arranged farther from the side exposed to wear as a side of the sheet metal construction facing it. Due to the complaint of the Indian body of the wear area of the sheet metal construction, a range of permissible wear can be defined in a simple manner. Only when this area has worn out, the then exposed indicator body can indicate the now not permissible degree of wear. Further details of this can be found in the figure described below.
- the indicator body is inserted only as far into the passage or recess, as the wear of the sheet metal construction may act or occur maximum. Due to the precisely defined depth of the indicator body, it is possible to define a tolerable wear and to allow an indication of the wear by the indicator body only when the wear exceeds a tolerable, defined level.
- the filler is an electrically non-conductive body such as a polymer resin.
- the indicator body is coupled to a voltage source and / or to an evaluation unit.
- the components mentioned may themselves be part of the wear indicator. If the indicator body is damaged, its electrical resistance can be changed This change, in turn, can be recorded using the example voltage source. Based on such resistance change, the presence of undesirable abrasion can be detected.
- the evaluation unit the changed resistance of the indicator body can be ascertained and this event can be transmitted, for example, to an on-board computer of a waste collection vehicle.
- the evaluation unit may also be the on-board computer itself.
- the invention is further directed to a sheet metal construction with at least one wear indicator according to one of claims 1 to 8, wherein the sheet metal construction is designed to be part of an abrasive claimed portion of a device.
- the invention is also directed to a refuse collection vehicle having at least one wear indicator according to any one of claims 1-8.
- the single FIGURE 1 shows a schematic arrangement of a wear indicator according to the invention, in which a filler 1 is formed within a passage of a sheet metal construction.
- the filler body 1 may be flush with the flat sides of the sheet metal construction and accommodate an indicator body 2, which may be guided, for example, in a U-shape within the filler body 1.
- the indicator body 2 may for example be designed as a wire whose two ends are arranged on one side of the filling body 1.
- the sheet metal construction may also comprise a plurality of bores or recesses into which an electrically conductive wire or a plurality of different electrically conductive wires of the side facing away from the abrasive wear of the sheet metal construction introduced and by a filling body 1, for example, from casting agent are fixed.
- the wire or the wires can additionally be designed with an insulation which separates the conductive core of the wire from the filling body 1.
- the indicator body 2 may be arranged at a position of the sheet metal construction, which is subject to experience or design increased wear compared to other locations of the sheet metal construction. As a result, it can be easily ensured that a relevant wear indicator or a few wear indicators allow a relevant monitoring of the wear to be realized.
- the implementation or recess can also be referred to as a blind hole or as a through hole. If there is a passage, then the wire or indicator body 2 can only be inserted as far as the wear of the sheet metal construction may have maximum effect.
- Both ends of the indicator body 2 can be coupled to a monitoring arrangement or to an evaluation unit which is set up to continuously or temporarily conduct current through the indicator body 2 during operation of the wear indicator.
- the sheet metal construction for example, be part of a refuse collection vehicle, which is claimed abrasive in their use.
- the indicator body 2 is either exposed or with the sheet metal structure conductively connected, which can lead to a short circuit. It is also conceivable that the indicator body 2 is separated by the wear, so that no or almost no current can flow through the indicator body 2. In both cases, the deviation from the desired or normal current flow through the indicator body 2 offers the possibility of detecting a change in state and indicating that it is reaching the wear limit of the sheet metal construction.
Abstract
Description
Claims
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DE202018100481.6U DE202018100481U1 (en) | 2018-01-29 | 2018-01-29 | Wear indicator for sheet metal construction |
PCT/EP2019/052063 WO2019145551A1 (en) | 2018-01-29 | 2019-01-29 | Wear indicator for sheet metal construction |
Publications (1)
Publication Number | Publication Date |
---|---|
EP3746737A1 true EP3746737A1 (en) | 2020-12-09 |
Family
ID=65268925
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
EP19702559.6A Pending EP3746737A1 (en) | 2018-01-29 | 2019-01-29 | Wear indicator for sheet metal construction |
Country Status (4)
Country | Link |
---|---|
EP (1) | EP3746737A1 (en) |
AU (1) | AU2019211187A1 (en) |
DE (1) | DE202018100481U1 (en) |
WO (1) | WO2019145551A1 (en) |
Family Cites Families (6)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS59127934U (en) * | 1983-02-15 | 1984-08-28 | 松下電器産業株式会社 | Wear degree and temperature detection device |
DE4006616A1 (en) * | 1990-03-02 | 1991-09-05 | Perrot Bremse Gmbh Deutsche | BRAKE PAD WEAR INDICATOR |
US6615639B1 (en) * | 1992-02-25 | 2003-09-09 | Ralph Heinzen | Self monitoring static seal |
US20090223083A1 (en) * | 2008-03-07 | 2009-09-10 | Pacific Bearing Company | Bearing including sensor and drying drum including same |
DE102014110383A1 (en) * | 2014-04-01 | 2015-10-01 | Becker Marine Systems Gmbh & Co. Kg | Bearing for supporting a shaft, in particular a rudder stock, electronic bearing clearance measuring device, rudder comprising a bearing for supporting a shaft and method for measuring a wear of a bearing for supporting a shaft |
CN205957895U (en) * | 2016-08-29 | 2017-02-15 | 希弗特科技(北京)有限公司 | Novel welt wearing and tearing thickness check and warning device |
-
2018
- 2018-01-29 DE DE202018100481.6U patent/DE202018100481U1/en active Active
-
2019
- 2019-01-29 WO PCT/EP2019/052063 patent/WO2019145551A1/en unknown
- 2019-01-29 EP EP19702559.6A patent/EP3746737A1/en active Pending
- 2019-01-29 AU AU2019211187A patent/AU2019211187A1/en not_active Abandoned
Also Published As
Publication number | Publication date |
---|---|
AU2019211187A1 (en) | 2020-09-17 |
WO2019145551A1 (en) | 2019-08-01 |
DE202018100481U1 (en) | 2019-04-30 |
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Legal Events
Date | Code | Title | Description |
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17P | Request for examination filed |
Effective date: 20200827 |
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DAV | Request for validation of the european patent (deleted) | ||
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17Q | First examination report despatched |
Effective date: 20221123 |
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P01 | Opt-out of the competence of the unified patent court (upc) registered |
Effective date: 20230602 |