EP0450543B1 - Bauteil mit Elementen zur Strömungswiderstandsverminderung - Google Patents

Bauteil mit Elementen zur Strömungswiderstandsverminderung Download PDF

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Publication number
EP0450543B1
EP0450543B1 EP91105144A EP91105144A EP0450543B1 EP 0450543 B1 EP0450543 B1 EP 0450543B1 EP 91105144 A EP91105144 A EP 91105144A EP 91105144 A EP91105144 A EP 91105144A EP 0450543 B1 EP0450543 B1 EP 0450543B1
Authority
EP
European Patent Office
Prior art keywords
guide surfaces
edges
member according
profile
flow
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.)
Expired - Lifetime
Application number
EP91105144A
Other languages
German (de)
English (en)
French (fr)
Other versions
EP0450543A1 (de
Inventor
Dieter Bauer
Christoph Eiwan
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.)
TAX ImbH
Original Assignee
TAX ImbH
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Filing date
Publication date
Application filed by TAX ImbH filed Critical TAX ImbH
Publication of EP0450543A1 publication Critical patent/EP0450543A1/de
Application granted granted Critical
Publication of EP0450543B1 publication Critical patent/EP0450543B1/de
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

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Classifications

    • E—FIXED CONSTRUCTIONS
    • E01—CONSTRUCTION OF ROADS, RAILWAYS, OR BRIDGES
    • E01D—CONSTRUCTION OF BRIDGES, ELEVATED ROADWAYS OR VIADUCTS; ASSEMBLY OF BRIDGES
    • E01D19/00—Structural or constructional details of bridges
    • E01D19/02—Piers; Abutments ; Protecting same against drifting ice
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B66—HOISTING; LIFTING; HAULING
    • B66C—CRANES; LOAD-ENGAGING ELEMENTS OR DEVICES FOR CRANES, CAPSTANS, WINCHES, OR TACKLES
    • B66C13/00—Other constructional features or details
    • B66C13/52—Details of compartments for driving engines or motors or of operator's stands or cabins
    • B66C13/54—Operator's stands or cabins
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B66—HOISTING; LIFTING; HAULING
    • B66C—CRANES; LOAD-ENGAGING ELEMENTS OR DEVICES FOR CRANES, CAPSTANS, WINCHES, OR TACKLES
    • B66C6/00—Girders, or track-supporting structures, specially adapted for cranes
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F15—FLUID-PRESSURE ACTUATORS; HYDRAULICS OR PNEUMATICS IN GENERAL
    • F15D—FLUID DYNAMICS, i.e. METHODS OR MEANS FOR INFLUENCING THE FLOW OF GASES OR LIQUIDS
    • F15D1/00—Influencing flow of fluids
    • F15D1/10—Influencing flow of fluids around bodies of solid material

Definitions

  • the invention relates to a box-shaped component with a polygonal box profile according to the preamble of claim 1.
  • box-shaped components have a large drag coefficient because of their unfavorable flow and therefore a relatively high flow resistance.
  • the bridge can therefore be optimized for these two flow directions.
  • it is clad on its lateral end faces with an approximately wedge-shaped profile, which is only aerodynamic, but not structural.
  • a guide surface is assigned to each of the two upper transition surfaces between the profiles and the road.
  • the transition surfaces are continuous surface transitions that the flow can easily follow.
  • the guiding surfaces have the task of improving the laminarity of the flow in the area close to the roadway and thus reducing the incidence of fluttering. They do not have a flow control function.
  • the guide surfaces run only to the highest apex, so that a part of the guide surface that is particularly important for a possible guiding function and extends beyond the apex is missing.
  • edges of the component exposed to a possible flow are each provided with guide surfaces running along these edges, which have a profile encompassing the edges and are arranged at a distance from the component walls. These guide surfaces have the effect that the flow in the critical area of the edges is kept largely turbulence-free, so that the dead water and vortex zone in the outflow area is narrow and the resistance therefore remains relatively low.
  • the profile of the guide surfaces is essentially evenly curved and runs approximately parallel to the wall surfaces forming the respective edge of the component.
  • the guide surfaces are assigned to all edges exposed to a possible flow, and they improve the flow around these edges in the manner described.
  • the profiles of the guide surfaces can be quarter-circle profiles; these are therefore particularly suitable for the cladding of edges which are formed by walls at right angles to one another.
  • Quarter-circle profiles of this type can be produced in a particularly advantageous manner from sections of longitudinally divided tubes.
  • Such tubes are standard components that are common in many sizes; slitting is possible in a simple and inexpensive manner with relatively simple technical facilities.
  • the guide surfaces are fastened to the respective components via connecting struts detachably connected to the guide surfaces on the one hand and / or the components on the other hand.
  • the longitudinal edges 3a to 3d of the profile beam 2 are each assigned guide surfaces 4a to 4d.
  • the guide surfaces 4a to 4d each have a quarter circle profile which comprises the associated longitudinal edges of the profile carrier 2, the end edges of the quarter circle profile each running parallel to the wall surfaces of the profile carrier 2 forming the assigned longitudinal edges.
  • a portion 6 of the flow lines runs outside the guide surfaces, which have the effect of rounded edges for these flow lines 6 and therefore form a relatively low resistance.
  • Another part 8 of the streamlines occurs between the two flow-side guide surfaces 4a, 4b and divides into two streams 10, 12, which flow between the flow-side guide surfaces 4a, 4b and the associated wall sections of the profile support 2 and then from the flow-side guide surfaces 4c , 4d are taken up again and passed around the rear edges 3c, 3d of the profile carrier 2 in the flow direction.
  • the streams 10, 12 combine again with the streams identified by the streamlines 6.
  • FIG. 2 shows the arrangement according to FIG. 1 with a modified flow directed towards an edge 3b of the profiled beam 2.
  • the guide surface 4b assigned to the edge 3b of the profiled beam 2 that is exposed to the flow acts like a rounded edge that divides the flow into two inner streams 14, 16 with little resistance, which are divided by the two outer guide surfaces 4a, 4c are guided with low resistance around the associated edges 3a, 3c to the outflow zone, where they reunite with the outer streams identified by the streamlines 18.
  • Fig. 3 shows a perspective view of a profile beam 2 with a rectangular box profile, the four longitudinal edges 3 of the profile beam 2 each having guide surfaces 4 with a quarter circle profile.
  • the guide surfaces 4 are each connected to the walls of the profile beam 2 via connecting struts 20.
  • the connecting struts 20 are detachably connected to the guide surfaces 4 and / or the profile support 2 in a manner known per se and therefore not shown in detail, for example by screws, so that the guide surfaces e.g. can be attached or removed even after assembly of the structure formed from the supports.
  • Fig. 4 shows a profile carrier 22 with a triangular box profile.
  • the two front edges 26, 28 in the direction of flow 24 are each assigned guide surfaces 30, 32, which also include the assigned edges again in such a way that their inlet and outlet edges run parallel to the walls forming the edges 26, 28 of the profiled support 22.
  • the rear edge 34 in the direction of flow 24 has no guide surfaces, since it itself represents a shape that is favorable for the outflow.
  • An arrangement according to FIG. 4 is suitable, for example, for carriers which are preferably exposed to a constant flow direction 24.
  • An application example is a bridge support or the like standing in a river.
  • FIG. 5 shows a driver's cab 36 for a high crane which is exposed to high wind speeds.
  • Guide surfaces 38 are arranged which act in horizontal wind directions as described with reference to FIGS. 1 and 2.
  • the edges delimiting the ceiling wall of the driver's cab 36 are correspondingly assigned guide surfaces 40, the edges delimiting the bottom wall guide surfaces 42.
  • the guide surfaces assigned to rectangular edges can be produced from tube profiles quartered in the longitudinal direction.

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Architecture (AREA)
  • Civil Engineering (AREA)
  • Structural Engineering (AREA)
  • Physics & Mathematics (AREA)
  • Fluid Mechanics (AREA)
  • General Engineering & Computer Science (AREA)
  • Bridges Or Land Bridges (AREA)
  • Extrusion Moulding Of Plastics Or The Like (AREA)
  • Jib Cranes (AREA)
EP91105144A 1990-04-02 1991-04-02 Bauteil mit Elementen zur Strömungswiderstandsverminderung Expired - Lifetime EP0450543B1 (de)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE9003816U 1990-04-02
DE9003816U DE9003816U1 (ko) 1990-04-02 1990-04-02

Publications (2)

Publication Number Publication Date
EP0450543A1 EP0450543A1 (de) 1991-10-09
EP0450543B1 true EP0450543B1 (de) 1995-11-02

Family

ID=6852557

Family Applications (1)

Application Number Title Priority Date Filing Date
EP91105144A Expired - Lifetime EP0450543B1 (de) 1990-04-02 1991-04-02 Bauteil mit Elementen zur Strömungswiderstandsverminderung

Country Status (3)

Country Link
EP (1) EP0450543B1 (ko)
JP (1) JPH0650312A (ko)
DE (2) DE9003816U1 (ko)

Families Citing this family (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
SE501257C2 (sv) * 1993-05-26 1994-12-19 Vattenfall Utveckling Ab Anordning vid bropelare
KR100591423B1 (ko) * 1997-07-15 2006-06-21 가부시키가이샤 고마쓰 세이사쿠쇼 버킷식 굴삭기의 부움 및 그 제조방법
JP2001118731A (ja) 1999-10-19 2001-04-27 Murata Mfg Co Ltd チップ型複合電子部品およびその製造方法
JP3800540B2 (ja) 2003-01-31 2006-07-26 Ｔｄｋ株式会社 インダクタンス素子の製造方法と積層電子部品と積層電子部品モジュ−ルとこれらの製造方法
CN102187408B (zh) 2008-10-30 2015-01-14 株式会社村田制作所 电子部件
WO2019193755A1 (ja) * 2018-04-06 2019-10-10 三菱電機株式会社 空気調和機

Family Cites Families (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE12288C (de) * K. WEISS in München, Schillerstr. 33/0 Eiserne, auch als Eisbrecher wirkende Panzer für Brückenpfeiler
DE1926248A1 (de) * 1969-05-22 1970-12-03 Augsburg Nuernberg Ag Zweignie Kranbruecken- oder Foerderbandtraeger in Vollwandbauweise
NL7501866A (nl) * 1975-02-18 1976-08-20 Tno Cilindervormig lichaam voorzien van middelen om trillingen als gevolg van dwarse aanstroming door een fluidum tegen te gaan.
DE8202119U1 (de) * 1982-01-26 1982-10-28 Schlick, Werner, 1000 Berlin Stroemungs-leitfluegel
GB2162610B (en) * 1984-08-02 1987-12-16 Thomas Henderson Regulation of response of bodies to a fluid flow
NL8500903A (nl) * 1985-03-27 1986-10-16 Rsv Gusto Eng Bv Pootconstructie voor een hefeiland omvattende een aantal met elkaar verbonden randstijlen.
IT1188328B (it) * 1986-02-05 1988-01-07 Stretto Di Messina Spa Struttura di ponte sospeso con mezzi di smorzamento dei fenomeni di flutter
NL8703078A (nl) * 1987-12-18 1989-07-17 Casparus Wilhelmus De Waal Profiel voor ruimtelijke konstruktie.

Also Published As

Publication number Publication date
EP0450543A1 (de) 1991-10-09
DE9003816U1 (ko) 1991-08-01
JPH0650312A (ja) 1994-02-22
DE59106790D1 (de) 1995-12-07

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