EP3407439B1 - Bloc de balais comportant un collecteur de poussière pour bagues collectrices - Google Patents

Bloc de balais comportant un collecteur de poussière pour bagues collectrices Download PDF

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Publication number
EP3407439B1
EP3407439B1 EP18174020.0A EP18174020A EP3407439B1 EP 3407439 B1 EP3407439 B1 EP 3407439B1 EP 18174020 A EP18174020 A EP 18174020A EP 3407439 B1 EP3407439 B1 EP 3407439B1
Authority
EP
European Patent Office
Prior art keywords
brush
dust
dust collector
brush holder
sleeve
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.)
Active
Application number
EP18174020.0A
Other languages
German (de)
English (en)
Other versions
EP3407439A1 (fr
Inventor
Christian Vogl
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.)
Schleifring GmbH
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Schleifring GmbH
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Filing date
Publication date
Application filed by Schleifring GmbH filed Critical Schleifring GmbH
Publication of EP3407439A1 publication Critical patent/EP3407439A1/fr
Application granted granted Critical
Publication of EP3407439B1 publication Critical patent/EP3407439B1/fr
Active legal-status Critical Current
Anticipated expiration legal-status Critical

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Classifications

    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01R—ELECTRICALLY-CONDUCTIVE CONNECTIONS; STRUCTURAL ASSOCIATIONS OF A PLURALITY OF MUTUALLY-INSULATED ELECTRICAL CONNECTING ELEMENTS; COUPLING DEVICES; CURRENT COLLECTORS
    • H01R39/00—Rotary current collectors, distributors or interrupters
    • H01R39/02—Details for dynamo electric machines
    • H01R39/46—Auxiliary means for improving current transfer, or for reducing or preventing sparking or arcing

Definitions

  • the invention relates to dust collectors for slipring brushes and brush holders, slipring brushes and brush holders with dust collectors and brush block for holding brushes with dust collectors for use in an electrical power transfer device like a slipring or rotary joint.
  • Sliprings are used to transfer electrical power between rotating parts of machines like wind power plants, CT scanners or electrical generators.
  • a brush mainly comprising of electrically conductive material like carbon is sliding on a rotating cylindrical track of conductive material. Common materials for such tracks are steel or brass.
  • US patent 8,829,761 B2 discloses a brush block contained within a duct. A forced air stream is generated through the duct by a fan and dust particles are collected in a filter. This embodiment is comparatively complex and expensive and is therefore preferably used in large brush blocks having a large number of brushes and comprising a large total mass of carbon material.
  • a universal motor having a dust protection cover is disclosed in EP 0971 473 A2 . This cover does not collect dust, but guides the dust within the airstream of the brush to a save area.
  • DE 195 43 383 A1 discloses a slipring with a dust collection device.
  • US 6,486,580 B1 discloses a generator with a brush holder. The bearing housing of the motor has a space for collecting dust.
  • the problem to be solved by the invention is to provide a simple and cost efficient means for collecting dust and debris from slip rings. Furthermore, maintenance should be easy and cost efficient.
  • a dust collector for slipring brushes or slipring brush holders comprises a body which may be made from an insulating material like a plastic material.
  • the dust collector forming at least one dust collection space formed by a dust collection rim.
  • the dust collector may have at least one attachment means for attaching the dust collector to a brush block or a brush holder sleeve.
  • the dust collection rim has a concave shape which simplifies holding dust.
  • the attachment means may be at least one clip or a pair of clips preferably to clip the dust collector to a brush holder and most preferably to the sleeve of a brush holder.
  • a first type may be for mounting at bottom positions of a slipring assembly having a circular collecting rim forming a collecting space which preferably encloses the brush holder, such that no dust can fall downwards along the dust holder.
  • Such a dust collector may have a concave shaped sidewall.
  • the sidewall may only cover a portion of the circumference of a brush holder like an arc segment of 180 degrees. It is preferred, if the dust collector forms an open channel parallel to the brush holder such that an airstream can pass along this channel.
  • a universal type may comprise a circular sidewall and a closed bottom, preferably at the area of the clips. This embodiment may be used at bottom positions, side positions and in-between. The disadvantage is the slightly higher space consumption.
  • the concave walls basically are arc-shaped, a cornered design having multiple corners will have the same effect and fall under the scope of the embodiments shown herein.
  • a dust collectors made from plastic material may be manufactured by 3D printing or injection molding. Plastic dust collectors are very flexible in their use, as they do not degrade insulation between parts. Alternatively, a dust collector may comprise metal.
  • At least one dust collector is attached to at least one brush holder for holding a brush.
  • multiple dust collectors may be connected together or even may be made of one piece. This will simplify removal and assembly for exchange and cleaning of the dust collectors. Most preferably only collectors belonging to brushes of the same sliding track are held together. This increases isolation between separate tracks.
  • dust collectors have ribs distributed over the dust collection surface to prevent dust to be sucked back. Also a rough surface of the dust collection surface is advantageous, especially if the dust collectors are for one time use.
  • the dust collectors may simply be removed (unplugged) from the brush holders or brush block. They may be cleaned or exchanged and assembled again.
  • the attachment of the dust collector to the brush holder or brush block might be by clip, bayonet or thread if removable, it might also be achieved by gluing, press fit, casting or 3D-printing if permanently attached.
  • carbon brushes relates to all kinds of brushes comprising at least a certain amount of carbon or graphite material.
  • Such brushes normally have a basically cuboid shape and do not form a wire, like a wire brush which normally comprises a metal.
  • a first dust collector 500 for side positions relative to a slipring is shown.
  • the collectors may be mounted in side positions as described later.
  • the collectors preferably are from an insulating material and most preferably from a plastic material.
  • the collectors have at least one holding means which may be a clip to hold the dust collector to a brush block or a brush holder sleeve 300.
  • the collectors have a preferably concave shaped wall 520 forming a collection space 510.
  • the collector may be attached to the brush block or brush holder sleeve such, that the collection space is sidewards and below the brush and may be open to the top such that it may collect dust falling from the brush towards ground.
  • the collecting space is radially oriented with respect to the longitudinal axis of a brush, preferably covering an angle of up to 180 degrees. It may cover any other suitable angle like 360 degrees or any fraction thereof.
  • the collector 500 may have at least one clip 540, 541 for holding the collector to the brush holder sleeve.
  • the sleeve may have a groove 330 for interfacing with the clip. It may allow holding the clip and therefore the dust collector for a long time in a stable and well defined position.
  • the clip may be held by spacers 550 to allow a larger distance of the wall 520 to the brush holder sleeve, which allows for a certain air flow to allow cooling of the brush holder and a larger collection capacity.
  • Figure 2 shows a sectional side view of the dust collector as in Fig. 1 .
  • Figure 3 shows a similar side view, but rotated about 90 degrees on a vertical axis.
  • ribs 530 are shown that act as dust traps to prevent dust to be sucked back.
  • the ribs may help to increase the stability of the dust collector.
  • Figure 4 shows a top view of the dust collector having an arc-shaped wall 520 forming a collection space.
  • a ring-shaped clip is shown, having two flexible end sections 540 and 541 which may interface with a holding groove of a brush holder sleeve.
  • the clip may also be used without holding groove.
  • FIG. 5 another embodiment of a dust collector 400 for bottom positions relative to a slipring is shown.
  • a dust collector 400 for bottom positions relative to a slipring is shown.
  • Such a collector has a rim 410 for collecting dust coming from a top side.
  • the collectors preferably are from an insulating material and most preferably from a plastic material.
  • the collectors have at least one holding means which is a ring - shaped clip (440, 441) according to claim 1 to hold the dust collector to a brush block or a brush holder sleeve.
  • the sleeve may have a groove 330 for interfacing with the clip.
  • the collector has a preferably ring shaped wall 420 forming a collection space by rim 410 which may be approximately concave.
  • the sidewall 430 may match to the outer contour of the sleeve and help fixing the dust collector to the sleeve. Preferably, it tightly encloses the sleeve, such that no dust may slide between the sleeve and the collector.
  • the collector may be attached to the brush block or brush holder sleeve 300 such, that the collection space is below the brush and open to the top and may collect dust falling from the brush towards ground.
  • the collecting space is axially oriented with respect to the longitudinal axis of a brush.
  • the brush may be located within an inner space 310 of the brush holder sleeve.
  • the sliding track is above the top of the sleeve.
  • Figure 6 shows a sectional side view of the collector as in Fig. 5 .
  • Figure 7 shows a similar side view, but rotated about 90 degrees on a vertical axis of the drawing.
  • a ring-shaped clip is shown, having two flexible end sections 440 and 441 which may interface with a holding groove of a brush holder sleeve.
  • the clip may also be used without holding groove.
  • a fully assembled brush holder is shown in a sectional view.
  • a carbon brush 360 is held within the brush holder sleeve 300.
  • the carbon brush 360 has a rectangular cross section.
  • the inner space 310 of the sleeve is adapted to the carbon brush and therefore, preferably has a rectangular cross section too.
  • a spring 350 presses the carbon brush out of the sleeve and towards a sliding track.
  • a locking cap 340 holds the spring and the brush within the sleeve. For exchanging the brush, the locking cap may be unscrewed and removed.
  • a brush block base 610 may provide means for holding the sleeve 300 together with the brush, the dust collector and other parts. The dust collector may also be directly attached to the brush block base, for example by means of a holding pin.
  • Figure 9 shows a section of a brush block having two brush holders held by a common brush block base 610.
  • a slipring module 100 with sliding tracks having a drum shape is shown. It may rotate about the axis 101 clockwise as shown by arrow 102. Basically, brushes and brush blocks may be arranged at any position. Here, four different positions are shown exemplarily. There are two side positions 201 and 203, a top position 204 and a bottom position 202.

Landscapes

  • Motor Or Generator Current Collectors (AREA)
  • Nozzles For Electric Vacuum Cleaners (AREA)

Claims (8)

  1. Collecteur de poussière (400, 500) pour des bagues collectrices comprenant un corps en un matériau isolant formant un espace de collecte (410, 510) et comprenant en outre au moins un moyen d'attache (440, 441, 540, 541) pour attacher le collecteur à un manchon de porte-balai, dans lequel un rebord de raccordement circulaire forme l'espace de collecte (410) ou une paroi de forme concave (520) forme l'espace de collecte (510),
    caractérisé en ce que
    l'au moins un moyen d'attache (440, 441, 540, 541) comprend une pince en forme de bague ayant deux sections d'extrémité flexibles qui établissent une interface avec le manchon de porte-balai.
  2. Collecteur de poussière selon la revendication 1,
    caractérisé en ce que
    la paroi de forme concave (520) forme un canal avec le manchon de porte-balai.
  3. Collecteur de poussière selon l'une quelconque des revendications précédentes,
    caractérisé en ce que
    le collecteur de poussière comprend un matériau plastique.
  4. Collecteur de poussière selon l'une quelconque des revendications précédentes,
    caractérisé en ce que
    l'espace de collecte comprend des nervures qui empêchent la poussière d'être aspirée en arrière.
  5. Porte-balai comprenant un manchon tubulaire cylindrique (300) maintenant un collecteur de poussière selon l'une quelconque des revendications précédentes.
  6. Porte-balai selon la revendication 5, ayant une rainure de maintien (330) pour la pince en forme de bague (440, 441, 540, 541) du collecteur de poussière.
  7. Bloc de balai de bague collectrice comprenant au moins un porte-balai de bague collectrice selon la revendication 5 ou 6, maintenu par une base de bloc de balai (610).
  8. Bague collectrice comprenant une gorge de coulissement et un bloc de balai de bague collectrice selon la revendication précédente.
EP18174020.0A 2017-05-26 2018-05-24 Bloc de balais comportant un collecteur de poussière pour bagues collectrices Active EP3407439B1 (fr)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
EP17173051 2017-05-26

Publications (2)

Publication Number Publication Date
EP3407439A1 EP3407439A1 (fr) 2018-11-28
EP3407439B1 true EP3407439B1 (fr) 2020-11-25

Family

ID=58778965

Family Applications (1)

Application Number Title Priority Date Filing Date
EP18174020.0A Active EP3407439B1 (fr) 2017-05-26 2018-05-24 Bloc de balais comportant un collecteur de poussière pour bagues collectrices

Country Status (3)

Country Link
EP (1) EP3407439B1 (fr)
CN (1) CN110663144B (fr)
WO (1) WO2018215602A1 (fr)

Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN111682384A (zh) * 2020-05-08 2020-09-18 黄科诚 一种动力集中式标准动车组接地装置
CN116571511B (zh) * 2023-07-14 2023-11-07 赛诺威盛科技(北京)股份有限公司 医疗影像设备的粉尘收集装置和方法及医疗影像设备

Family Cites Families (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE19543383B4 (de) * 1995-11-21 2005-10-27 Schleifring Und Apparatebau Gmbh Schleifkontaktvorrichtung
GB9814690D0 (en) * 1998-07-08 1998-09-02 Johnson Electric Sa Dust guard
US6486580B1 (en) * 2000-02-10 2002-11-26 Visteon Global Technologies, Inc. Bearing retainer assembly
US8829761B2 (en) 2006-11-14 2014-09-09 Schleifring Und Apparatebau Gmbh Sliding contact assembly with dust removal

Non-Patent Citations (1)

* Cited by examiner, † Cited by third party
Title
None *

Also Published As

Publication number Publication date
WO2018215602A1 (fr) 2018-11-29
EP3407439A1 (fr) 2018-11-28
CN110663144B (zh) 2021-08-06
CN110663144A (zh) 2020-01-07

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