EP4238394A1 - Potentialausgleich eines bewegten seiles einer seilgezogenen fördereinrichtung - Google Patents
Potentialausgleich eines bewegten seiles einer seilgezogenen fördereinrichtungInfo
- Publication number
- EP4238394A1 EP4238394A1 EP21801077.5A EP21801077A EP4238394A1 EP 4238394 A1 EP4238394 A1 EP 4238394A1 EP 21801077 A EP21801077 A EP 21801077A EP 4238394 A1 EP4238394 A1 EP 4238394A1
- Authority
- EP
- European Patent Office
- Prior art keywords
- cable
- potential
- electrically conductive
- moving
- bristle
- 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.)
- Granted
Links
- 239000004033 plastic Substances 0.000 claims abstract description 14
- 239000004020 conductor Substances 0.000 claims description 11
- 238000010438 heat treatment Methods 0.000 claims description 3
- 229910000831 Steel Inorganic materials 0.000 description 5
- 239000010959 steel Substances 0.000 description 5
- RYGMFSIKBFXOCR-UHFFFAOYSA-N Copper Chemical compound [Cu] RYGMFSIKBFXOCR-UHFFFAOYSA-N 0.000 description 2
- 229910052802 copper Inorganic materials 0.000 description 2
- 239000010949 copper Substances 0.000 description 2
- 239000002184 metal Substances 0.000 description 2
- 229910052751 metal Inorganic materials 0.000 description 2
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 description 1
- 229910052799 carbon Inorganic materials 0.000 description 1
- 230000008878 coupling Effects 0.000 description 1
- 238000010168 coupling process Methods 0.000 description 1
- 238000005859 coupling reaction Methods 0.000 description 1
- 230000005684 electric field Effects 0.000 description 1
- 238000007786 electrostatic charging Methods 0.000 description 1
- 230000007613 environmental effect Effects 0.000 description 1
- 238000005461 lubrication Methods 0.000 description 1
- 239000000203 mixture Substances 0.000 description 1
- 239000007787 solid Substances 0.000 description 1
Classifications
-
- H—ELECTRICITY
- H05—ELECTRIC TECHNIQUES NOT OTHERWISE PROVIDED FOR
- H05F—STATIC ELECTRICITY; NATURALLY-OCCURRING ELECTRICITY
- H05F3/00—Carrying-off electrostatic charges
- H05F3/02—Carrying-off electrostatic charges by means of earthing connections
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B61—RAILWAYS
- B61B—RAILWAY SYSTEMS; EQUIPMENT THEREFOR NOT OTHERWISE PROVIDED FOR
- B61B12/00—Component parts, details or accessories not provided for in groups B61B7/00 - B61B11/00
Definitions
- the present invention relates to an arrangement for equipotential bonding of a moving cable of a cable-pulled conveyor device with a defined electrical reference potential of the cable-pulled conveyor device.
- Cable-drawn conveyors such as cable cars, elevators, etc.
- cables usually made of steel or a combination of steel and plastic, to transport a conveyor unit, e.g. cable car, usually between two or more cable car stations.
- a cable of the cable-pulled conveying device can be designed as a supporting cable and can be tightly stretched between two points, for example two cable car stations.
- a cable of the cable-pulled conveying device can also be designed as a conveying cable and can be moved, either running back and forth or rotating.
- a rope in the form of a hoisting rope for example, the cable car vehicles or an elevator car are moved, either by the hoisting units being firmly or releasably clamped to the rope or by the hoisting units being pulled through the rope.
- ropes must be electrically grounded in order to safely dissipate any electrical charge on the rope, for example due to electrostatic charging, lightning strikes, coupling of electrical currents through electrical fields, etc.
- the rope can also become electrically charged if the rope itself is not designed to be electrically conductive.
- a potential equalization to a defined reference potential, for example earth is easy to implement because the cable can be securely contacted, for example by means of contact clamps.
- equipotential bonding is difficult because the moving rope must have safe and permanent electrical contact for equipotential bonding.
- cable pulleys for example deflection pulleys of a circulating cable in a cable car station, or cable pulleys, for example a pulley battery
- electrically conductive contact elements such as metal plates or pins, were used on the running surface of a cable pulley or pulley, or the running surface itself was designed to be electrically conductive, e.g. in the form of a cable pulley lining or a rubber pulley, for example in the form of an electrically conductive plastic.
- the electrical contacting of the conductive elements of the running surface was made via the bearing of the sheave or sheave.
- the cable makes electrically conductive contact with the conductive elements of the cable pulley or cable pulley.
- the disadvantage of this solution can be seen in the fact that such electrical contact elements wear out quickly on the running surface and are often readjusted need to maintain contact with the rope. Electrically conductive rubber pulleys or sheave linings lose their electrical conductivity with age and must therefore also be replaced frequently.
- grounding pulleys that are in contact with the moving cable and run along with the cable.
- the electrical contacting of the grounding rollers is made via the bearing of the grounding roller.
- Designs are known as brush rollers with copper brushes on the circumference of the grounding roller or full rollers with an electrically conductive running surface. Solid rollers have a high running noise. Brush rolls wear out very quickly.
- the surface of the rope can be damaged by the brush of the brush roller, especially with steel and plastic ropes.
- a more serious disadvantage of such grounding pulleys is that the bearing of the grounding pulley begins to become electrically insulating from a certain cable speed due to the bearing lubrication, with the result that the grounding function can no longer be guaranteed.
- a potential equalization unit with at least one brush body and with at least one electrically conductive contact bristle made of electrically conductive plastic arranged therein, the potential equalization unit being arranged relative to the moving cable in order to achieve potential equalization between the at least one electrically conductive contact bristle and to enable the moving cable and the at least one electrically conductive contact bristle is electrically conductively connected to at least one potential point with the electrical reference potential.
- the equipotential bonding unit only needs to be arranged in such a way that equipotential bonding is possible.
- the contact bristles are connected to a potential point of the cable-pulled conveying device in order to establish potential equalization. This can be done directly via the contact bristles or via the brush body. An electric one can also do this Conductors are used, whereby the connection to the potential point can be simplified.
- the at least one contact bristle is advantageously designed to be elastic and the potential equalization unit is arranged relative to the moving cable in such a way that the at least one elastic and electrically conductive contact bristle makes electrical contact with the moving cable. Due to the elastic, conductive contact bristles, the equipotential bonding unit does not have to be actively pressed against the cable. This reduces the mechanical stress on the equipotential bonding unit and the cable. Apart from that, no pressing mechanism is required. However, the equipotential bonding unit can also be arranged relative to the moving rope in such a way that the at least one electrically conductive contact bristle is arranged at a distance from the rope.
- the equipotential bonding unit is advantageously arranged in such a way that the tip of the at least one contact bristle, or the entire brush pile, faces the cable.
- the equipotential bonding takes place through electrical flashover between the cable and contact bristle as soon as the electrical potential difference is large enough. A certain electrical potential of the cable is accepted and the potential equalization only takes place when this is exceeded.
- the potential equalization unit is arranged on a holder with which the potential equalization unit is fastened in the cable-pulled conveying device and with which the potential equalization unit can be adjusted relative to the holder in order to position the potential equalization unit relatively to be able to adjust to the rope.
- FIGS. 1 to 4 show advantageous configurations of the invention by way of example, schematically and not restrictively. while showing
- FIG. 1 shows a potential equalization unit according to the invention on a holder
- FIG. 2 shows an arrangement of the potential equalization unit in a rope-pulled conveyor
- FIG. 4 a cable with plastic inserts.
- the potential equalization unit 1 for moving cables of a cable-pulled conveying device, as shown in FIG.
- a brush pile made of a large number of elastic contact bristles 3 made of electrically conductive plastic arranged next to one another is provided.
- At least one Contact bristle 3 is arranged in brush body 2 . If there are several contact bristles 3, several brush bodies 2 can also be provided.
- the brush body 2 is preferably designed to be elongated in the direction of the moving cable, particularly in the case of a brush pile. "Longitudinally stretched" here means that the extension of the brush body 2 in the direction of movement of the moving cable is greater than transversely thereto.
- the at least one electrically conductive contact bristle 3 can be electrically contacted.
- an electrical conductor 4 is arranged on the brush body 2, for example screwed on as in FIG.
- the brush body 2, in which the at least one contact bristle 3 is arranged can be made of an electrically conductive material, such as metal or electrically conductive plastic. In this way, the at least one contact bristle 3 can also be electrically contacted via the brush body 2 .
- the electrical conductor 4 for contacting the contact bristle 3 via the brush body 2 can be arranged on the brush body 2 .
- several electrical conductors 4 can also be provided.
- the potential equalization unit 1 can be arranged on a holder 5, preferably exchangeable, with which the potential equalization unit 1 can be attached to a component of the cable-pulled conveyor.
- the at least one brush body 2 can be arranged on the holder 5 .
- the potential equalization unit 1 can be arranged in the area of a moving cable 10 by means of the holder 5, so that the electrical potential equalization with the potential equalization unit 1 is made possible.
- the at least one contact bristle 3 can make electrical contact with the cable 10, as shown in FIG.
- the component of the cable conveyor device on which the equipotential bonding unit 1 is arranged can be a stationary component, for example part of a stationary structure (for example a cable car station) of the cable conveyor device.
- the component can also be a moving component of the cable-pulled conveying device, such as a cable car or an elevator car.
- a relative movement between the cable 10 and the equipotential bonding unit 1 may or may not be provided.
- an electrical connection is provided between the moving component and the equipotential bonding unit 1 thereon and the potential point 14 of the cable-pulled conveyor device, for example by means of sliding contacts.
- the cable-drawn conveyor is a cable car
- cable car vehicles are often disconnected from the cable 10 in the cable car station.
- the equipotential bonding unit 1 which is arranged outside the cable car station on the cable car vehicle, is separated from the cable car vehicle in the cable car station and remains on the rope 10.
- a relative movement between the cable 10 and the equipotential bonding unit 1 can also be provided.
- the equipotential bonding unit 1 can also be arranged so that it can be adjusted relative to the holder 5 (as indicated by the double arrows in FIG. 2) in order to be able to align the equipotential bonding unit 1 relative to the cable 10 when in use. Any adjustability in space, both linear and rotary, can be provided. However, the equipotential bonding unit 1 can also be fixed (but preferably exchangeable) on the holder 5 .
- the equipotential bonding unit 1, and thus also the at least one brush body 2 with the at least one contact bristle 3, can be arranged stationary relative to the moving cable 10.
- the equipotential bonding unit 1 can also be movably arranged in the cable-pulled conveyor device, for example on a moving component of the cable-pulled conveyor device.
- the at least one contact bristle 3 is arranged facing the cable 10 .
- the distance between the at least one brush body 2 or the at least one contact bristle 3 and the cable 10 can be selected so that the at least one elastic contact bristle 3 nestles against the cable 10 in order to establish good electrical contact.
- the at least one contact bristle 3 it is not absolutely necessary for the at least one contact bristle 3 to touch the cable 10 in order to establish a potential equalization to a reference potential.
- the distance between the brush body 2 and the cable 10 can also be chosen so that there is no contact between the at least one contact bristle 3 or the bristle pile and the cable 10 .
- the at least one elastic contact bristle 3 would not have to be elastic either.
- equipotential bonding would occur when the potential difference between the potential point with reference potential and the cable 10 becomes so large that an electrical flashover occurs between the cable 10 and the at least one contact bristle 3 .
- the equipotential bonding unit 1 Because of the elastic contact bristle 3, it is also not necessary for the equipotential bonding unit 1 to be pressed against the cable 10, for example by means of a spring or another pressing mechanism.
- the equipotential bonding unit 1 thus preferably does not include any moving components and can therefore be constructed very simply.
- the grounding brush 1 can therefore also be used in particular with a cable 10 made of steel and plastic, as shown for example in FIG. 4, or only made of plastic.
- the rope 10 shown comprises a rope core 13 (made of steel and/or plastic), several strands 11 consisting of individual wires, and inserts 12 made of plastic, which are twisted to form the rope 10 .
- the inserts 12 made of plastic are not damaged on the surface by a potential equalization unit 1 according to the invention.
- the electrical conductor 4 can connect the at least one electrically conductive contact bristle 3, for example via the brush body 2, to a potential point 14 with a defined electrical reference potential, with the reference potential being ground or any other electrical potential.
- a potential point 14 can be, for example, any component of the cable-pulled conveyor device that is at reference potential (e.g. grounded), for example in a cable car station. If the at least one contact bristle 3 is electrically conductively connected to the at least one brush body 2, then the brush body 2 can also be arranged directly on a component of the cable-pulled conveyor device that is at the reference potential.
- the equipotential bonding unit 1 can be arranged at any position in the area of the cable 10 .
- the equipotential bonding unit 1 is preferably arranged in such a way that the at least one contact bristle 3 is aligned from top to bottom and preferably rests against the cable 10 . In this way, in particular with a brush pile, it can be achieved that dirt cannot accumulate so easily between the contact bristles 3 .
- Possible advantageous positions of the equipotential bonding unit 1 in the area of the cable 10 are shown in FIG.
- a heating device (not shown) can also be provided on the potential equalization unit 1 in order to counteract icing of the potential equalization unit 1 , in particular the at least one contact bristle 3 .
- This is particularly advantageous for a cable-pulled conveyor that is exposed to the external environmental conditions exposed, such as a cable car.
- the heating device can be designed electrically, for example.
Landscapes
- Engineering & Computer Science (AREA)
- Transportation (AREA)
- Mechanical Engineering (AREA)
- Elimination Of Static Electricity (AREA)
Abstract
Description
Claims
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
ATA50927/2020A AT524407A1 (de) | 2020-10-27 | 2020-10-27 | Potentialausgleich eines bewegten Seiles einer seilgezogenen Fördereinrichtung |
PCT/EP2021/079563 WO2022090166A1 (de) | 2020-10-27 | 2021-10-25 | Potentialausgleich eines bewegten seiles einer seilgezogenen fördereinrichtung |
Publications (2)
Publication Number | Publication Date |
---|---|
EP4238394A1 true EP4238394A1 (de) | 2023-09-06 |
EP4238394B1 EP4238394B1 (de) | 2024-02-21 |
Family
ID=78463479
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
EP21801077.5A Active EP4238394B1 (de) | 2020-10-27 | 2021-10-25 | Potentialausgleich eines bewegten seiles einer seilgezogenen fördereinrichtung |
Country Status (5)
Country | Link |
---|---|
EP (1) | EP4238394B1 (de) |
JP (1) | JP7536363B2 (de) |
AT (1) | AT524407A1 (de) |
ES (1) | ES2976041T3 (de) |
WO (1) | WO2022090166A1 (de) |
Family Cites Families (7)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS6085080U (ja) * | 1983-11-18 | 1985-06-12 | 株式会社 明輝電機製作所 | 可動的索条の接地機構 |
US5010441A (en) * | 1990-01-24 | 1991-04-23 | Xerox Corporation | Grounding brush |
US7528513B2 (en) * | 2005-08-17 | 2009-05-05 | Illinois Tool Works Inc. | Shaft current control brush assembly with drainage |
JP6085080B2 (ja) | 2011-06-27 | 2017-02-22 | 株式会社野村総合研究所 | Fxシステム用セキュリティ診断支援装置、およびfxシステム用セキュリティ診断支援方法 |
US9799988B2 (en) * | 2015-05-01 | 2017-10-24 | Illinois Tool Works Inc. | Apparatus for establishing an electrical contact with a target surface |
WO2017109901A1 (ja) | 2015-12-24 | 2017-06-29 | 堺ディスプレイプロダクト株式会社 | 除電ブラシ、除電装置及び除電方法 |
FR3063199B1 (fr) | 2017-02-17 | 2021-12-03 | Mersen France Amiens Sas | Dispositif de mise a la terre d'un cable appartenant a un systeme de transport par cable |
-
2020
- 2020-10-27 AT ATA50927/2020A patent/AT524407A1/de unknown
-
2021
- 2021-10-25 EP EP21801077.5A patent/EP4238394B1/de active Active
- 2021-10-25 JP JP2023519580A patent/JP7536363B2/ja active Active
- 2021-10-25 ES ES21801077T patent/ES2976041T3/es active Active
- 2021-10-25 WO PCT/EP2021/079563 patent/WO2022090166A1/de active Application Filing
Also Published As
Publication number | Publication date |
---|---|
AT524407A1 (de) | 2022-05-15 |
ES2976041T3 (es) | 2024-07-22 |
WO2022090166A1 (de) | 2022-05-05 |
JP2023553242A (ja) | 2023-12-21 |
EP4238394B1 (de) | 2024-02-21 |
JP7536363B2 (ja) | 2024-08-20 |
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