EP3431775A1 - Fixation d'une barre de fixation pour une grille de protection de ventilateur - Google Patents

Fixation d'une barre de fixation pour une grille de protection de ventilateur Download PDF

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Publication number
EP3431775A1
EP3431775A1 EP18184048.9A EP18184048A EP3431775A1 EP 3431775 A1 EP3431775 A1 EP 3431775A1 EP 18184048 A EP18184048 A EP 18184048A EP 3431775 A1 EP3431775 A1 EP 3431775A1
Authority
EP
European Patent Office
Prior art keywords
fastening
leg
fastening device
clamping
region
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
Application number
EP18184048.9A
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German (de)
English (en)
Other versions
EP3431775B1 (fr
Inventor
Michael Eccarius
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.)
Ebm Papst Mulfingen GmbH and Co KG
Original Assignee
Ebm Papst Mulfingen GmbH and 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 Ebm Papst Mulfingen GmbH and Co KG filed Critical Ebm Papst Mulfingen GmbH and Co KG
Publication of EP3431775A1 publication Critical patent/EP3431775A1/fr
Application granted granted Critical
Publication of EP3431775B1 publication Critical patent/EP3431775B1/fr
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Classifications

    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
    • F04D—NON-POSITIVE-DISPLACEMENT PUMPS
    • F04D29/00—Details, component parts, or accessories
    • F04D29/70—Suction grids; Strainers; Dust separation; Cleaning
    • F04D29/701—Suction grids; Strainers; Dust separation; Cleaning especially adapted for elastic fluid pumps
    • F04D29/703—Suction grids; Strainers; Dust separation; Cleaning especially adapted for elastic fluid pumps specially for fans, e.g. fan guards
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
    • F04D—NON-POSITIVE-DISPLACEMENT PUMPS
    • F04D29/00—Details, component parts, or accessories
    • F04D29/60—Mounting; Assembling; Disassembling
    • F04D29/64—Mounting; Assembling; Disassembling of axial pumps
    • F04D29/644—Mounting; Assembling; Disassembling of axial pumps especially adapted for elastic fluid pumps
    • F04D29/646—Mounting or removal of fans
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F05—INDEXING SCHEMES RELATING TO ENGINES OR PUMPS IN VARIOUS SUBCLASSES OF CLASSES F01-F04
    • F05D—INDEXING SCHEME FOR ASPECTS RELATING TO NON-POSITIVE-DISPLACEMENT MACHINES OR ENGINES, GAS-TURBINES OR JET-PROPULSION PLANTS
    • F05D2260/00—Function
    • F05D2260/30—Retaining components in desired mutual position
    • F05D2260/31—Retaining bolts or nuts

Definitions

  • the invention relates to a fastening device of a fastening strut for a fan guard and a fan guard with at least one attachment strut and such a fastening device.
  • Fan guards are used, for example, with axial fans as shock protection. They typically include a plurality of concentric, radially spaced bars. In addition, the fan guards are often formed three-dimensional, with its radial edge portion is formed by mainly axially spaced grid bars. Also mutually radially and axially spaced bars may be provided to form oblique courses.
  • the bars of the fan guards are fixed together fixed position and stabilized.
  • the fan guards are attached to the fan or fan motor via the ends of the mounting braces.
  • a disadvantage of known solutions is in particular the not always sufficient avoidance of lateral force loads and often one-piece or cohesively realized fasteners on or in protective grid elements such as supporting struts.
  • the invention is based on the object of improving the attachment of a protective grid and / or increasing the fatigue strength properties of the fasteners required for this purpose.
  • a fastening device for fastening a fastening strut for a fan guard, which has at least one extending in a longitudinal direction of the first leg, which is designed to overlap a plurality of bars of the fan guard, wherein the at least one first leg has a free longitudinal end, and in the area the free longitudinal end of the at least first leg, the fastening device is arranged.
  • the fastening device comprises a first fastening sleeve and at least one second fastening sleeve, which cooperate in such a way that at least one clamping area receiving at least the first leg is supported.
  • the clamping region is bounded by at least one first collar provided on one of the fastening sleeves.
  • an embodiment of the fastening device is characterized in that the at least two fastening sleeves are axially braced both against each other and with respect to the leg for fixing the protective grid.
  • the at least two fastening sleeves can be braced by a screw connection.
  • At least one of the fastening sleeves has a conical section directed in the axial direction, so that a normal force Fn acts on the at least one leg when the fastening sleeves are clamped to one another as a result of the axial movement.
  • an embodiment comprises that in the clamping state after fixing by at least one shoulder of the collar and at least one conical region in the clamping area for receiving the at least one leg, a normal force Fn and an axial force Fax acting on the at least one leg.
  • the clamping region is dimensioned undersized with respect to the leg, so that in the attached state, a clamping connection is formed.
  • an embodiment is included, which is characterized in that the clamping area relative to the leg is dimensioned so strongly undersized, so that at least one of the elemental materials of the leg or one of the fastening sleeves is at least partially claimed in the field of plastic and / or elastic-plastic flow.
  • a clamping force Fsp for clamping and / or clamping is realized by a screw connection.
  • the fastening device is also directed to embodiments in which the fastening strut has a second leg extending in the longitudinal direction substantially parallel to the first leg. Both legs are arranged in the clamping area and are held by the fastening device.
  • the fastening strut has a second leg extending in the longitudinal direction substantially parallel to the first leg, wherein the first and the second leg are integrally formed in a hairpin shape and an open end of the hairpin shape determines the free longitudinal end.
  • the "hairpin shape” is defined as two U-shaped at least substantially parallel legs, which is closed on one side by a substantially circular transition, so that a U-shape is formed, wherein the respective leg length and curvature of the transition are variable. It is preferred the fastening device arranged in the transverse direction between the first and second leg. The free longitudinal end of the mounting strut is stabilized by the arrangement of the fastening device between the two legs, allows a higher snapshot at the attachment point of the fan guard and ensures an increased life during operation.
  • first and / or the second leg have a substantially round cross-sectional shape.
  • the fastening element In the region of the free longitudinal end of the fastening strut, the fastening element is arranged such that it terminates flush with the free longitudinal end of the leg (s).
  • the invention further comprises a fan guard with at least one, preferably a plurality of, above-described attachment struts and a corresponding number of attachment devices on each of the attachment struts.
  • a fan guard has a plurality of bars, which are overlapped by the at least one attachment strut.
  • the free longitudinal end of the mounting strut and the fastener disposed thereon protrude radially inwardly from the region of the grid bars and provide a connection point to the fan or fan motor.
  • a fan guard 50 is shown with a plurality of circumferential bars 3 in a perspective view.
  • the fan guard 50 has four attachment struts 31 for mounting on a fan, between which shorter one-sided reinforcing struts 30 are arranged, each seen in the radial direction.
  • the fastening struts 1 overlap all grid bars 3 and have at their radially inner portions in each case the free longitudinal end.
  • Each of the attachment struts 31 is formed by two legs 11, 12 which extend in a hairpin shape.
  • the respectively closed U-shaped section protrudes radially beyond the fan guard grille 50 and in each case offers a connection point.
  • the shape of the attachment struts 31 is adapted to the course of the bars 3, so that the attachment struts 1 have an outer substantially vertically extending, an adjoining radially extending, an adjoining oblique portion.
  • the oblique section is adjoined by the free longitudinal section, in which the fastening struts 31 run straight in the radial direction.
  • the fastening device 13 is provided in each case, which also in the Figures 2 and 3 is shown in more detail.
  • Each fastening device 13 comprises according to FIG. 2 and 3 two interlocking fastening sleeves 14, 15, which together form the clamping region 19, within which the leg ends of the legs 11, 12 are inserted are.
  • On the first mounting sleeve 14 is a vertical axial web 16, on the second mounting sleeve 15 a directed in the axial direction conical portion 56 in the form of a lateral abutment leg for the legs 11, 12 is formed.
  • Both fastening sleeves 14, 15 each have a leg 11, 12 completely overlapping collar 24, 25, which axially bound the clamping area 19.
  • the fastening sleeves 14, 15 generate in the mutually braced state in the clamping region 19 such axial clamping force Fsp, which is sufficient that both the required clamping forces of the clamping portion 19 and the aufappelbaren transverse forces (perpendicular to the axial clamping force) on the real occurring transverse forces Fq.
  • transverse forces are absorbed by the collar 24 of the fastening sleeve 14.
  • the fastening device 13 is flush with the free longitudinal end of the round cross-section legs 11, 12 from.

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Structures Of Non-Positive Displacement Pumps (AREA)
EP18184048.9A 2017-07-19 2018-07-17 Fixation d'une barre de fixation pour une grille de protection de ventilateur Active EP3431775B1 (fr)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DE102017116287.9A DE102017116287A1 (de) 2017-07-19 2017-07-19 Befestigung einer Befestigungsstrebe für ein Lüfterschutzgitter

Publications (2)

Publication Number Publication Date
EP3431775A1 true EP3431775A1 (fr) 2019-01-23
EP3431775B1 EP3431775B1 (fr) 2024-02-14

Family

ID=62981136

Family Applications (1)

Application Number Title Priority Date Filing Date
EP18184048.9A Active EP3431775B1 (fr) 2017-07-19 2018-07-17 Fixation d'une barre de fixation pour une grille de protection de ventilateur

Country Status (2)

Country Link
EP (1) EP3431775B1 (fr)
DE (1) DE102017116287A1 (fr)

Citations (10)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB601222A (en) * 1944-10-04 1948-04-30 Berkeley & Young Ltd Improvements in, or relating to, electric fans
DE3311660C2 (fr) 1983-03-30 1990-07-12 Siemens Ag, 1000 Berlin Und 8000 Muenchen, De
US5271588A (en) * 1992-07-17 1993-12-21 General Electric Company Multi-piece tube clamp
DE29900923U1 (de) 1999-01-20 2000-07-06 Mulfingen Elektrobau Ebm Anordnung zur schwingungsisolierenden Halterung eines Elektromotors
DE10111397A1 (de) * 2001-03-09 2002-09-12 Ebm Werke Gmbh & Co Kg Schutzgitter für Ventilatoren
WO2008037023A1 (fr) * 2006-09-28 2008-04-03 Black Adda Pty Ltd Collier de fixation pour une paire d'organes allongés
DE202009010930U1 (de) * 2009-08-14 2009-11-26 Tiemann Schutz-Systeme Gmbh Befestigung für Gitterzäune
DE102011121025A1 (de) * 2011-08-18 2013-02-21 Ziehl-Abegg Ag Motoraufhängung für Ventilatoren, vorzugsweise Axialventilatoren, sowie Verfahren zur Herstellung eines Lüftungsgitters einer solchen Motoraufhängung
DE202016103323U1 (de) 2016-06-23 2016-07-06 Ebm-Papst Mulfingen Gmbh & Co. Kg Befestigungsstrebe für ein Lüfterschutzgitter
DE102015004019A1 (de) * 2015-03-26 2016-09-29 Uwe Stadtmüller Schutzgitter; Verfahren zur Herstellung eines Schutzgitters für Lüfter

Patent Citations (10)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB601222A (en) * 1944-10-04 1948-04-30 Berkeley & Young Ltd Improvements in, or relating to, electric fans
DE3311660C2 (fr) 1983-03-30 1990-07-12 Siemens Ag, 1000 Berlin Und 8000 Muenchen, De
US5271588A (en) * 1992-07-17 1993-12-21 General Electric Company Multi-piece tube clamp
DE29900923U1 (de) 1999-01-20 2000-07-06 Mulfingen Elektrobau Ebm Anordnung zur schwingungsisolierenden Halterung eines Elektromotors
DE10111397A1 (de) * 2001-03-09 2002-09-12 Ebm Werke Gmbh & Co Kg Schutzgitter für Ventilatoren
WO2008037023A1 (fr) * 2006-09-28 2008-04-03 Black Adda Pty Ltd Collier de fixation pour une paire d'organes allongés
DE202009010930U1 (de) * 2009-08-14 2009-11-26 Tiemann Schutz-Systeme Gmbh Befestigung für Gitterzäune
DE102011121025A1 (de) * 2011-08-18 2013-02-21 Ziehl-Abegg Ag Motoraufhängung für Ventilatoren, vorzugsweise Axialventilatoren, sowie Verfahren zur Herstellung eines Lüftungsgitters einer solchen Motoraufhängung
DE102015004019A1 (de) * 2015-03-26 2016-09-29 Uwe Stadtmüller Schutzgitter; Verfahren zur Herstellung eines Schutzgitters für Lüfter
DE202016103323U1 (de) 2016-06-23 2016-07-06 Ebm-Papst Mulfingen Gmbh & Co. Kg Befestigungsstrebe für ein Lüfterschutzgitter

Also Published As

Publication number Publication date
DE102017116287A1 (de) 2019-01-24
EP3431775B1 (fr) 2024-02-14

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