SE535989C3 - - Google Patents
Info
- Publication number
- SE535989C3 SE535989C3 SE535989DA SE535989C3 SE 535989 C3 SE535989 C3 SE 535989C3 SE 535989D A SE535989D A SE 535989DA SE 535989 C3 SE535989 C3 SE 535989C3
- Authority
- SE
- Sweden
- Prior art keywords
- post
- thickness
- weld
- joint
- posts
- Prior art date
Links
Classifications
-
- E—FIXED CONSTRUCTIONS
- E01—CONSTRUCTION OF ROADS, RAILWAYS, OR BRIDGES
- E01F—ADDITIONAL WORK, SUCH AS EQUIPPING ROADS OR THE CONSTRUCTION OF PLATFORMS, HELICOPTER LANDING STAGES, SIGNS, SNOW FENCES, OR THE LIKE
- E01F9/00—Arrangement of road signs or traffic signals; Arrangements for enforcing caution
- E01F9/60—Upright bodies, e.g. marker posts or bollards; Supports for road signs
- E01F9/623—Upright bodies, e.g. marker posts or bollards; Supports for road signs characterised by form or by structural features, e.g. for enabling displacement or deflection
- E01F9/631—Upright bodies, e.g. marker posts or bollards; Supports for road signs characterised by form or by structural features, e.g. for enabling displacement or deflection specially adapted for breaking, disengaging, collapsing or permanently deforming when deflected or displaced, e.g. by vehicle impact
- E01F9/635—Upright bodies, e.g. marker posts or bollards; Supports for road signs characterised by form or by structural features, e.g. for enabling displacement or deflection specially adapted for breaking, disengaging, collapsing or permanently deforming when deflected or displaced, e.g. by vehicle impact by shearing or tearing, e.g. having weakened zones
Landscapes
- Engineering & Computer Science (AREA)
- Architecture (AREA)
- Civil Engineering (AREA)
- Structural Engineering (AREA)
- Road Signs Or Road Markings (AREA)
Description
535 883 2 Figur 1 visar en lyktstolpe sammansatt av flera avsmalnande plåtar 11-14 som medför att stolpen blir koniskt avsmalnande uppåt. Plåtarna kan vara plana, men kan också ha längsgående veck 15,16. Plåtarna är hopfogade med längsgående svetsade skarvar 17-20. Figur 2 visar skarven 17 i förstoring. De motstående plåtarnas 11,12 kanter har avfasningar 21,22 så att kanternas anliggningsylor blir mindre än plåttjockleken och är hopsvetsade, företrädesvis med lasersvetsning, så att stumsvetsarnas 23 tjocklek tvärs plåten blir mindre än plåttjockleken. Svetsarna täcker således inte hela plåttjockleken. 535 883 2 Figure 1 shows a lamp post composed of several tapered plates 11-14 which causes the post to taper conically upwards. The plates can be flat, but can also have longitudinal folds 15,16. The plates are joined with longitudinally welded joints 17-20. Figure 2 shows the joint 17 in magnification. The edges of the opposite plates 11,12 have chamfers 21,22 so that the abutment axes of the edges become smaller than the plate thickness and are welded together, preferably with laser welding, so that the thickness of the butt welds 23 across the plate becomes less than the plate thickness. The welds thus do not cover the entire sheet metal thickness.
De bör högst täcka °/. av plåttjocklekemdvs ha en tjocklek t, mindre än V. av plåttjockleken t2 och de utgör därmed försvagningar som lätt brister om de direkt påkörs och tillåter att stolpen att plattas till och vika sig på önskat sätt men svetsarna är tillräckligt starka för att inte utgöra försvagningar mot vindkrafier.They should not exceed ° /. of sheet metal thicknessvdvs have a thickness t, less than V. of sheet metal thickness t2 and they thus constitute weakenings which easily break if they are hit directly and allow the post to flatten and fold in the desired manner but the welds are strong enough not to be wind turbines.
Figur 3 visar en stolpe som är rullformad av ett stycke så att den har endast en längsgående skarv 24 som är utförd på det sätt som beskrivits med hänvisning till figur 2. Stolpen har rullformats i tunn plåt med plåttjocklek av 1-2 mm, exv 1,5 mm, och den har ett antal områden 25 med förstyvande veck med trefaldig plåt på det sätt som beskrivits i WO 2008/127168 till vilken hänvisas. De förstyvade områdena 25 är starka mot vindkrafter men tillåter stolpen att plattas till vid krockbelastning. Om stolpen har polygonal tvärsektion kan lämpligen förstyvningarna 25 utföras som hörn såsom visas, men stolpen kan alternativt ha cirkulär tvärsektion.Figure 3 shows a post which is roll-shaped in one piece so that it has only a longitudinal joint 24 which is made in the manner described with reference to fi figure 2. The post has been roll-formed in thin sheet metal with sheet metal thickness of 1-2 mm, e.g. , 5 mm, and it has a number of areas 25 with stiffening folds with triple sheet metal in the manner described in WO 2008/127168 to which reference is made. The stiffened areas 25 are strong against wind forces but allow the post to flatten in the event of a collision load. If the post has a polygonal cross-section, the stiffeners 25 can suitably be designed as corners as shown, but the post can alternatively have a circular cross-section.
De mot vindkrafter förstyvade hörnen deformeras lättare vid krockbelastning än de övriga hörnen i polygontvärsnittet och skarven 24 kan lämpligen utföras i ett av de mot vindkrafter förstyvade hörnen. Lyktstolpar enligt figur 3 ska placeras utmed vägen så att skarven 24 blir riktad mot trafiken.The corners stiffened against wind forces are more easily deformed under impact load than the other corners in the polygon cross section and the joint 24 can suitably be made in one of the corners stiffened against wind forces. Lampposts according to figure 3 shall be placed along the road so that the joint 24 is directed towards the traffic.
Stolpar enligt figur 1 har så många skarvar att de inte nödvändigtvis behöver positioneras med en skarv direkt mot trafiken. Det blir alltid en eller två av skarvarna som är riktade mot trafiken oavsett stolparnas vridläge i förhållande till trafiken. En rullforrnad stolpe enligt figur 3 kan även rullformas i flera delar och liksom exemplet i figur 1 ha flera längsgående svetsar.Posts according to figure 1 have so many joints that they do not necessarily need to be positioned with a joint directly against the track. There will always be one or two of the joints that are directed towards the traffic, regardless of the rotational position of the posts in relation to the traffic. A roll-shaped post according to Figure 3 can also be rolled into several parts and, like the example in Figure 1, have longitudinal welds.
Claims (9)
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
SE535989T |
Publications (1)
Publication Number | Publication Date |
---|---|
SE535989C3 true SE535989C3 (en) | 2013-05-21 |
Family
ID=48444754
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
SE535989D SE535989C3 (en) |
Country Status (1)
Country | Link |
---|---|
SE (1) | SE535989C3 (en) |
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0
- SE SE535989D patent/SE535989C3/sv unknown
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