EP3776820A1 - Dispositif de dérivation - Google Patents

Dispositif de dérivation

Info

Publication number
EP3776820A1
EP3776820A1 EP19715408.1A EP19715408A EP3776820A1 EP 3776820 A1 EP3776820 A1 EP 3776820A1 EP 19715408 A EP19715408 A EP 19715408A EP 3776820 A1 EP3776820 A1 EP 3776820A1
Authority
EP
European Patent Office
Prior art keywords
switch
receiving means
contact
contact strand
strand
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
Application number
EP19715408.1A
Other languages
German (de)
English (en)
Inventor
Helmut Roesser
Peter Hoelscher
Robert Noe' Castellanos
Juergen Spies
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Schunk Transit Systems GmbH Germany
Original Assignee
Schunk Transit Systems GmbH Germany
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 Schunk Transit Systems GmbH Germany filed Critical Schunk Transit Systems GmbH Germany
Publication of EP3776820A1 publication Critical patent/EP3776820A1/fr
Pending legal-status Critical Current

Links

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
    • H—ELECTRICITY
    • H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02K—DYNAMO-ELECTRIC MACHINES
    • H02K11/00—Structural association of dynamo-electric machines with electric components or with devices for shielding, monitoring or protection
    • H02K11/40—Structural association with grounding devices
    • H—ELECTRICITY
    • H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02K—DYNAMO-ELECTRIC MACHINES
    • H02K2213/00—Specific aspects, not otherwise provided for and not covered by codes H02K2201/00 - H02K2211/00
    • H02K2213/03—Machines characterised by numerical values, ranges, mathematical expressions or similar information

Definitions

  • the invention relates to a discharge device for discharging electrostatic charge from a shaft. Furthermore, the invention relates to a device comprising a shaft and a discharge device.
  • Discharge devices can be used to dissipate electrostatic charge due to frictional effects or external influences such as lightning strikes.
  • discharge devices can also be used to dissipate electrical shear charge of motor shafts of electric motors, which may arise in particular to three-phase motors as a result of a change-induced electrical current.
  • An object of the invention is to provide a discharge device with which the achievement of defined wear of the contact strand of the discharge device can be detected in a timely manner.
  • the discharge device for dissipating electrostatic charge from a shaft has a frame holder with a first leg and a second leg and a contact strand for forming a contact surface with the shaft, wherein a first end of the contact strand is clamped to the first leg and a second end of the contact strand is slidably mounted on the second leg. Furthermore, the discharge device has a receiving means arranged on the frame holder, wherein the second end of the contact strand projects at least partially into the receiving means.
  • the Ablei processing device on a receiving means or in the contact strand arranged switch, in particular reed switch, which is adapted to be activated due to a displacement of at least partially protruding into thewavemit tel second end of the contact strand.
  • the switch is a reed switch or a reed contact.
  • the switch can also be designed as a reed sensor.
  • the reed switch preferably has ferromagnetic switching tongues which can move toward one another or away from one another when the magnetic field acts from the outside. This provides a reliable, hermetically sealed switching element with small size for fast Kunststoffvor courses.
  • "Activate” can be understood as closing or opening the switch, in particular the reed switch. In other words, it follows when closing the switch, a change from an open position to a closed position, whereas when you open the switch, a change from a shooting position to an open position. This causes wear of the contact strand whose displacement. In other words, the switch is set up to be activated as a result of wear caused by Ver of the contact strand displacement desselbigen.
  • the contact strand is tangential to a contact circumference of the shaft in the frame holder can be arranged.
  • a contact surface can be formed.
  • the contact strand is designed as a strand or cord.
  • the clamped at the first end of the contact strand on the first leg end can be understood as a fixed clamping or as a fixed bearing.
  • the displaceably mounted on the second leg second end of the con tact strand can be understood as a floating bearing.
  • a magnetic field generated by the magnetic field relative to the switch is designed to be displaced.
  • a magnetic field generated by the magnetic field region can be displaced relative to the switch.
  • a magnet may be arranged at the second end or in the region of the second end.
  • the second end may also be at least partially closed by the magnet. Due to the wear of the contact strand, the magnetic region of the contact strand may move away from the switch, resulting in opening of the switch. In other words, a magnetic field removing the switch opens the switch. This happens in particular when the switch is located in the direction of displacement of the second end of the contact strand below the second end of the contact strand.
  • the magnetic region of the contact strand may also move toward the switch, resulting in closure of the switch.
  • a magnetic field approaching the switch closes the switch. This happens in particular when the switch is located in the direction of displacement of the second end of the contact strand above the second end of the contact strand. It is also advantageous if, in an arrangement of the switch in the
  • the receiving means has a magnetic region.
  • the switch is designed to be displaceable in relation to a magnetic field generated by the magnetic region.
  • the second end of the contact strand may be displaced relative to a magnetic field generated by the magnetic field.
  • a magnet may be arranged in the receiving means for this purpose.
  • the switch can be arranged in the region of the second end of the contact strand projecting at least partially into the receiving means.
  • the switch may also move toward the magnetic region, resulting in closure of the switch.
  • a magnetic field approaching the switch closes the switch. This happens in particular when the magnetic region is located in the direction of displacement of the second end of the contact strand above the contact strand.
  • the discharge device has an optical or acoustic means which is connected to the switch and which is in particular arranged to be triggered as a result of an activation of the switch.
  • the agent can be triggered in the open state of the switch who the. Alternatively, the agent can be triggered in the closed state of the switch.
  • the means may emit an optical, visual or audible signal.
  • the optical means may be a light source, in particular a light bulb or an LED.
  • the acoustic means may be a loudspeaker.
  • the contact strand may be guided at the second end through an opening of the second's angle of the frame holder.
  • the opening is formed as a slot.
  • the second end of the contact strand in Aufnah meffen relative to the longitudinal extent of the second leg verlager bar.
  • a relative displacement or relative displacement of the second end of the contact strand to the receiving means executable. It is advantageous if the contact strand rests in a starting position on a first side of the opening of the second leg and rests in the end position on one of the first side opposite the second side of the opening of the leg. Under the initial position can be understood a position of the contact strand, in which the con tact strand is wear-free.
  • An end position of the contact strand can be understood to be a position in which the contact strand has such wear phenomena that the contact strand and / or the discharge device has to be changed.
  • the switch is set up to be activated as a result of Redukti on the original cross-sectional area of the contact strand to foundeds least 50%. This makes it easy to determine when the original cross-sectional area has been reduced to at least half. Due to the geometric configuration, ie the shape of the opening or the slot, the displacement of the second end can be set in a simple manner.
  • the receiving means is arranged on the outside on the second leg of the frame holder. This allows a space, in particular cavity, for guiding or displacing the second end of the contact strand in the receiving means to simple
  • the receiving means may be attached by means of fastening means on the second leg.
  • the receiving means at least partially surrounds the frame holder.
  • the receiving means can be connected to the frame holder in a simple manner.
  • the switch is glued or pressed in the receiving means.
  • a firm connection of the switch in Aufnah mesch can be achieved in a simple manner.
  • the switch is glued in the contact strand, pressed or interwoven. As a result, a firm connection of the switch in or within the contact strand can be achieved in a simple manner.
  • the discharge device has a means which is adapted to apply a force to the frame holder in the direction of the shaft.
  • the means is designed as a tension or compression spring.
  • the device has a shaft and a discharge device, as described above.
  • FIG. 1 a perspective view of a Ab effetseinrich device
  • FIG. 2 shows the discharge device from FIG. 2 in a longitudinal view in contact with a shaft
  • FIG. 1 a perspective view of a Ab effetseinrich device
  • FIG. 3 shows a detail B of the discharge device from FIG. 2;
  • Fig. 1 shows a discharge device 1 comprising a strictlyhal ter 2, a contact strand 6, which is arranged on the frame holder 2 and a receiving means 10.
  • the discharge device 1 is used for dissipation of electrostatic charge from a shaft 20th
  • the discharge device 1 has the frame holder 2 with a first leg 3 and a second leg 4 and the contact strand 6 for forming a contact surface with the shaft 20.
  • a first end 7 of the contact strand 6 is at the first Leg 3 firmly clamped.
  • a second end 8 of the contact strand 6 is slidably mounted on the second leg 4.
  • the second end 8 of the contact strand 6 protrudes at least partially into the receiving means 10.
  • the discharge device 1 has a switch arranged in the receiving means 10, which is designed as a reed switch 12.
  • the reed switch 12 is set up to be activated as a result of a displacement of the at least partially protruding into the receiving means 10, the second end 8 of the contact strand 6.
  • the displacement results from the wear of the contact strand 2.
  • the second end 8 of the contact strand 2 correspondingly moves with respect to the receiving means 10 and thus with respect to the reed switch 12.
  • the reed switch 12 is present in the direction of displacement of the second end 8 of the contact strand 6 below the second end 8 of the contact strand 6 in the receiving means 10 is arranged.
  • the contact strand 6 is arranged tangentially to a contact circumference of the shaft 20 in the frame holder 2. In this case, a contact surface is formed in a contact position of the contact strand 6 between this and the contact circumference of the shaft 20.
  • the contact strand 6 is formed as a strand and has a fiber arrangement of a multiplicity of carbon fibers. Alternatively, the contact strand 6 can be formed as a cord.
  • stiffener which are formed as stiffening plates 15, 16.
  • the first end 7 of the contact strand 6 is assigned a cable guide 17. Further, the second end 8 of the contact strand 6 is arranged on the reed switch 12 cable guide 18 forms out.
  • the contact strand 6 is guided at the second end 7 at least partially by the second leg 4 of the frame holder 2 in the receiving means 10.
  • the receiving means 10 is on the outside of the second leg. 4 the frame holder 2 is arranged. In this case, the receiving means 10 surrounds the frame holder 2 at least partially.
  • the discharge device 1 has an optical or acoustic means 13 connected to the reed switch 12.
  • the means 13 is arranged to be triggered as a result of an activation of the reed switch 12.
  • a detail B of Fig. 2 is shown.
  • the second end 8 of the contact strand 6 is guided through an opening 5 of the second leg 4 of the frame holder 2.
  • the second end 8 protrudes, at least in sections, into a cavity 1 1 of the receiving means 10.
  • the second end 8 projecting partially into the receiving means 10 is magnetically formed.
  • a magnet 9 is arranged on the front side at the second end 8 of the contact strand 6.
  • the reed switch 12 is glued or pressed in the receiving means 10. Due to the wear of the contact strand 6, the magnetic second end 8 of the contact strand 6 may move away from the reed switch 12, i. be displaced, which leads to an opening of the switch 12. In other words, the magnetic field removing from the reed switch 12 opens the reed switch 12. As a result, the reed switch 12 is triggered or activated.
  • a visual or audible signal can be generated by means of the means 13 shown in FIG.
  • This signal provides the operating personnel that, for example, a reduction of the original cross-sectional area of the contact strand is reduced to at least 50%.
  • a change of the discharge device 1 or a change of the contact strand 6 of the discharge device 1 can be initiated.
  • FIG. 4 shows the section AA from FIG. 2.
  • the second end 8 of the contact strand 6 is connected through an opening 5 of the second th leg 4 of the frame holder 2 out.
  • the opening 5 is formed as a slot. As a result, a vertical displacement of the second end 8 of the contact strand 6 can be achieved.
  • the second end 8 abuts against a first side of the opening 5 of the second leg 4 which is designed as a slot. In this position, there is no wear on the contact strand 6.
  • the contact strand 6 is displaced in such a way that it bears against a second side of the opening 5 of the second leg 4, which is opposite the first side (not shown).
  • the contact strand 6 has signs of wear that make a change of the contact strand 6 and the Ab effetseinrich device 1 required.
  • the displacement of the second end 8 within the Publ tion 5 can be set in a simple manner.
  • a means can vorgese hen, which is adapted to apply the frame holder 2 in the direction of the shaft 20 with a tensile or compressive force.
  • This means is for example designed as a tension spring which can engage the frame carrier 2.

Landscapes

  • Engineering & Computer Science (AREA)
  • Power Engineering (AREA)
  • Push-Button Switches (AREA)
  • Elimination Of Static Electricity (AREA)

Abstract

La présente invention concerne un dispositif de dérivation (1) pour dériver une charge électrostatique d'un arbre (20). Ledit dispositif de dérivation comprend : un support de cadre (2) ayant une première branche (3) et une seconde branche (4) et une tige de contact (6) pour former une surface de contact avec l'arbre (20), une première extrémité (7) de la tige de contact (6) étant tendue au niveau de la première branche (3) et une seconde extrémité (8) de la tige de contact (6) étant logée de manière à pouvoir coulisser au niveau de la seconde branche (4) ; un moyen de logement (10) disposé au niveau du support de cadre (2), la seconde extrémité (8) de la tige de contact (6) faisant saillie au moins en partie dans le moyen de logement (10) ou dans un interrupteur, disposé dans le moyen de réception (10) ou dans la tige de contact (6), en particulier un interrupteur Reed (12), qui est conçu pour être activé suite à un déplacement de la seconde extrémité (8) de la tige de contact (6) faisant saillie au moins en partie dans le moyen de logement (10).
EP19715408.1A 2018-03-27 2019-03-20 Dispositif de dérivation Pending EP3776820A1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE102018107260.0A DE102018107260B3 (de) 2018-03-27 2018-03-27 Ableitungseinrichtung
PCT/EP2019/056977 WO2019185420A1 (fr) 2018-03-27 2019-03-20 Dispositif de dérivation

Publications (1)

Publication Number Publication Date
EP3776820A1 true EP3776820A1 (fr) 2021-02-17

Family

ID=66041431

Family Applications (1)

Application Number Title Priority Date Filing Date
EP19715408.1A Pending EP3776820A1 (fr) 2018-03-27 2019-03-20 Dispositif de dérivation

Country Status (6)

Country Link
US (1) US11678427B2 (fr)
EP (1) EP3776820A1 (fr)
AU (1) AU2019245806A1 (fr)
BR (1) BR112020019584A2 (fr)
DE (1) DE102018107260B3 (fr)
WO (1) WO2019185420A1 (fr)

Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP4154361A1 (fr) * 2020-05-20 2023-03-29 Schunk Transit Systems GmbH Dispositif de décharge
WO2023202775A1 (fr) 2022-04-21 2023-10-26 Schunk Transit Systems Gmbh Dispositif de dissipation et procédé de dissipation de courants électriques

Family Cites Families (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS57122650A (en) 1981-01-23 1982-07-30 Toshiba Corp Axis of rotation earthing device
US4739208A (en) * 1986-11-13 1988-04-19 General Electric Company Brush assembly including brush wear detector
US7242297B2 (en) * 2005-02-16 2007-07-10 Vogt William R Alarm sensor
US9441692B2 (en) * 2008-03-11 2016-09-13 Honeywell International Inc. Proximity sensor for brake wear detection
DE202011106899U1 (de) 2011-10-19 2011-11-10 Schunk Bahn- Und Industrietechnik Gmbh Ableitungseinrichtung
JP6071784B2 (ja) 2013-07-10 2017-02-01 株式会社東芝 軸接地装置
CN204103677U (zh) 2014-10-17 2015-01-14 大连宜顺机电有限公司 接地装置
DE102015206520A1 (de) 2015-04-13 2016-10-13 Schunk Bahn- Und Industrietechnik Gmbh Ableitungseinrichtung

Also Published As

Publication number Publication date
AU2019245806A1 (en) 2020-10-01
DE102018107260B3 (de) 2019-05-23
US11678427B2 (en) 2023-06-13
BR112020019584A2 (pt) 2021-01-05
WO2019185420A1 (fr) 2019-10-03
US20210168922A1 (en) 2021-06-03

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