DK168226B1 - Stand with break joint for erection of roadsigns - Google Patents
Stand with break joint for erection of roadsigns Download PDFInfo
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- DK168226B1 DK168226B1 DK38791A DK38791A DK168226B1 DK 168226 B1 DK168226 B1 DK 168226B1 DK 38791 A DK38791 A DK 38791A DK 38791 A DK38791 A DK 38791A DK 168226 B1 DK168226 B1 DK 168226B1
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- DK
- Denmark
- Prior art keywords
- stand
- leg
- foundation
- node
- collision
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- Road Signs Or Road Markings (AREA)
- Refuge Islands, Traffic Blockers, Or Guard Fence (AREA)
Description
DK 168226 B1DK 168226 B1
Opfindelsen angår en stander til opsætning af vejvisningstavler og færdselstavler fortrinsvis ved siden af kørebanen og af den art, hvor der ved anvendelse af brudled på standeren opnåes, at afmærkningen i tilfælde af påkørsel frembyder en reduceret fare 5 for trafikanterne.BACKGROUND OF THE INVENTION 1. Field of the Invention The invention relates to a stand for setting up road signs and traffic signs, preferably adjacent to the roadway and of the kind where using the rope joints on the stand is achieved that the marking presents a reduced danger to road users in the event of a collision.
Ved den nuværende opsætning af vejtavler ved siden af kørebanen anvendes normalt en opsætning på stålstandere, der enten kan være RHS-standere, IPE-standere eller rørgitterstandere og - for 10 de mindre vejtavlers vedkommende - et eller to lodrette jernrør.In the current set-up of road signs next to the roadway, a set-up is usually used for steel stands, which can be either RHS stands, IPE stands or pipe grilles and - for the smaller road boards - one or two vertical iron pipes.
Disse standertyper er enten gravet ned i jorden i passende dybde eller fastboltet på betonfundamenter i jordoverfladen. Den sidstnævnte fasgørelsesmetode anvendes ved opsætning af alle større 15 tavler. Se figur 1.These standard types are either dug into the soil at appropriate depth or bolted to concrete foundations in the soil surface. The latter method of fastening is used in the setting up of all major boards. See Figure 1.
Alle disse standertyper frembyder en - større eller mindre - risiko for trafikanterne ved en eventuel påkørsel. For at formindske denne risiko er der hidtil anvendt følgende metoder: 20 a) opsætning af autoværn mellem kørebanen og standerne. Metoden er ret bekostelig, og autoværnet frembyder iøvrigt i sig selv en påkørselsrisiko, selv om følgerne normalt vil være mindre alvorlige end ved påkørsel af de store standere, b) konstruktion af specielle rørmaster med relativt tynde vægge 25 konstrueret således, at væggene forholdsvis let bryder sammen ved den særlige påvirkning, de får ved en påkørsel. Sådanne master er ret dyre at fremstille, og de er derfor ikke hidtil blevet anvendt i forbindelse med opsætning af vejtavler ved siden af kørebanen.All of these standard types present a - greater or lesser - risk to road users in the event of a collision. To mitigate this risk, the following methods have so far been used: The method is quite expensive, and the auto guard also presents a risk of collision per se, although the consequences will usually be less severe than the collision of the large stands; b) construction of special pipe masts with relatively thin walls 25 designed to break the walls relatively easily together by the special impact they get on a collision. Such masts are quite expensive to manufacture, and so have not been used so far in connection with road sign setup next to the roadway.
30 c) forsyning af standerne med såkaldte brudled, d.v.s. normalt to punkter på standeren, hvor denne vil kunne give efter, når den bliver påkørt.C) supplying the stands with so-called fracture joints, i.e. usually two points on the stand where this will be able to yield when it is hit.
Standere med brudled er kendt fra US. patentskrift 4.278.228 og 35 er desuden af Vejdirektoratet i Danmark i en del tilfælde anvendt til standerkonstruktioner med RHS-standere og IPE-standere til vejtavler med fladearealer på 5 - 6 m2 eller mere.Breast joints are known from the US. In addition, patents 4,278,228 and 35 have been used by the Danish Road Directorate in Denmark in some cases for standard designs with RHS stands and IPE stands for road boards with area of 5 - 6 m2 or more.
DK 168226 B1 2DK 168226 B1 2
Idet det bemærkes, at US.patent 4,278.228 og Vejdirektoratets konstruktioner iike principielt adskiller sig fra hinanden, gives i det følgende en beskrivelse af Vejdirektoratets konstruktion, der også redegør for manglerne ved denne konstruktion.Noting that U.S. Patent 4,278,228 and the Road Directorate's structures are in principle different from each other, the following is a description of the Road Directorate's construction, which also explains the shortcomings of this construction.
:5 RHS-standernes og IPE-standernes brudled i Vejdirektoratets konstruktion består af to detailler, se figur 2:: 5 The fracture joints of the RHS and IPE stands in the Road Directorate's construction consist of two parts, see Figure 2
Umiddelbart under vejtavlens underkant - i ca 2,5 m højde over jorden og fundamentet - har standeren en spalte, der danner en del-10 vis overskæring af standeren forfra. Denne overskæring er på standerens forside samlet igen med en laskeplade, der er fastspændt med momentnøgle, så der er en forud bestemt friktion mellem laskeplade og standerforkant, der medfører, at sammenspændingen svigter, når standerens nederste del ved en påkørsel bøjes bagud med en vis 15 kraft.Immediately below the bottom of the weighing board - at about 2.5 m height above the ground and the foundation - the stand has a slot which forms a partial cut of the stand from the front. This cut is assembled on the front of the stand again with a wrench fastened with torque wrench, so that there is a predetermined friction between the weld plate and the stand leading which causes the clamp to fail when the lower part of the stand is bent backwards by a certain 15 power.
Bagudbøjningen af den nederste del af standeren er muliggjort ved, at standeren forneden er fastspændt til betonfundamentet med et system af bolte og fundamentplader med opslidsede boltehuller, således at en passende kraft (påkørselskraften) forfra mod standeren 20 skubber standeren ud af indgreb med fundamentet, hvorefter den fortsatte kraft fra påkørslen bøjer standeren bagud og opad samtidig med, at sammenspændingen i det øverste led brydes.The backward deflection of the lower part of the stand is made possible by the lower part of the stand being clamped to the concrete foundation with a system of bolts and foundation plates with slotted bolt holes, so that an appropriate force (the impact force) from the front towards the stand 20 pushes the stand out of engagement with the foundation, after which the continued force from the impact bends the stand backwards and upwards while breaking the tension in the upper link.
Den ovenfor beskrevne konstruktion giver ganske vist en stander,.The construction described above provides a stand.
25 som er mindre farlig at påkøre end den massive stander uden brudled, men konstruktionen har den ulempe, at de vindkræfter, der påvirker tavlefladen, kan få det øverste led til at bryde sammen, så at tavlefladen vælter bagover i stormvejr. - Den i US. patent nr. 4.278.228 beskrevne konstruktion vil på samme måde kunne bryde sam-30 men. - Og, hvis man vil sikre sig mod et sådant sammenbrud på grund af storm, skal man - især på større tavler - sammenspænde det øverste led med så kraftigt et moment, at brudleddets virkning overfor påkørsel til gengæld bliver meget tvivlsom.25 which is less dangerous to collide than the massive stand without rupture joints, but the construction has the disadvantage that the wind forces affecting the board surface can cause the top joint to collapse, causing the board surface to fall backwards in stormy weather. - The one in the US. Patent No. 4,278,228 can similarly break apart. - And, if you want to safeguard against such a collapse due to storm, - especially on larger boards - you have to tighten the upper link with such a powerful moment that the impact of the fracture on collision in turn becomes very questionable.
35 En anden ulempe ved den af Vejdirektoratet anvendte konstruktion er, at boltene i det øverste brudled skal spændes meget omhyggeligt med momentnøgle, og at denne sammenspænding skal kontrolleres med jævne mellemrum, da boltespændingen kan ændre sig på grund af vibrationer i tavlekonstruktionen. Dette betyder selvsagt en forøgel-40 se af vedligeholdelsesudgifterne for tavlen.35 Another disadvantage of the construction used by the Road Directorate is that the bolts in the upper fracture joint must be tightened very carefully with a torque wrench, and that this tension must be checked at regular intervals as the bolt tension can change due to vibrations in the panel structure. Of course, this means an increase in the maintenance costs of the board.
DK 168226 Bl 3 I stedet for de nævnte RHS-standere og IPE-standere anvendes som allerede nævnt også rørgitterstandere· Disse rørgitterstandere er i den hidtil anvendte form, se figur 1, ikke særlig påkørselsvenlige, da de har vandrette afstivninger forneden mellem forreste 5 og bageste standerben, så at der ved en påkørsel skal ske en bukning af den ret stive gitterkonstruktion og en løsrivelse af begge standerben samtidigt fra fundamentet, hvilket kræver en ikke ubetydelig påkørselsenergi.DK 168226 Bl 3 Instead of the mentioned RHS stands and IPE stands, as already mentioned, pipe grilles are also used. · These pipe grilles are in the form used so far, see Figure 1, not very impact-friendly, as they have horizontal stiffeners between the front 5 and 5. rear stand legs, so that when a collision occurs, the rather rigid lattice construction must be bent and a detachment of both stand legs simultaneously from the foundation, which requires a not insignificant collision energy.
10 Det særlige, der opnåes ved standerkonstruktionen iflg. opfindelsen, er, at gitterstanderen, når den er fastspændt på fundamentet, er i stand til at optage de vindkræfter, der virker på tavlen, og samtidig let kan løsrives fra sit fundament og bukkes væk af et påkørende køretøj.10 The particular obtained by the standard construction according to. The invention is that the grid stand, when clamped to the foundation, is capable of absorbing the wind forces acting on the board, and at the same time can easily be detached from its foundation and buckled away by a moving vehicle.
1515
Dette opnåes ifølge opfindelsen ved en stander af den indledningsvis nævnte art, der er ejendommelig ved det i den kendetegnende del af krav 1 angivne.This is achieved according to the invention by a stand of the kind mentioned in the introduction, which is characterized by the characterizing part of claim 1.
Ved en påkørsel skubbes det forreste standerben ud af sin fundament- 20 forbindelse, og det forholdsvis tynde rør, standerbenet består af, bukkes lige under knudepunktet ved tavlens underkant uden at yde synderlig modstand mod påkørslen.In a collision, the front stand leg is pushed out of its foundation joint, and the relatively thin tube of the stand leg is bent just below the junction at the bottom of the board without providing any particular resistance to the collision.
Er påkørslen så kraftig, at køretøjet fortsætter og rammer skråstiveren og det bageste standerben, vil gitterstanderen efter fjernel- 25 sen af det forreste standerben være svækket så meget, at den svage skråstiverforbindelse let rives af, og det bageste standerben skubbes ud af sin fundamentforbindelse, og skråstiver og standerben vil evt. blive bukket bagud og opad uden at yde større modstand.If the collision is so strong that the vehicle continues to hit the inclined strut and the rear upright leg, after the removal of the front upright leg, the grating stand will be weakened so much that the weak oblique strut joint is easily torn off and the rear upright leg pushed out of its foundation joint, and oblique struts and stand legs may. be bent backwards and upwards without providing greater resistance.
30 En ikke uvæsentlig reduktion af de kræfter, der opstår ved påkørslen, opnåes ved, at påvirkningen er opdelt i to dele - bruddet af det forreste og derefter bruddet af det bageste ben - med en lille tidsforskel, der bevirker en formindskelse af påvirkningen på køretøj og passagerer.30 A not insignificant reduction in the forces exerted by the impact is achieved by the impact being divided into two parts - the fracture of the front and then the fracture of the rear leg - with a small difference in time causing a reduction in the impact on the vehicle. and passengers.
I en særlig udførelsesform kan knudepunktet mellem forreste standerben og stiverne ved tavlens underkant - i stedet for at være udført som en svejsesamling, der forudsætter, at der sker en bøjning af 35 DK 168226 Bl 4 forreste standerben ved påkørsel - være udført således, at forreste standerben er fastgjort i knudepunktet med en bolt, hvorved modstanden mod, at benet bøjes bagud ved påkørslen, vil blive yderligere formindsket. Det skønnes dog, at denne mere komplice-5 rede konstruktion i de fleste tilfælde vil vise sig upåkrævet.In a particular embodiment, the junction between the front stand legs and the struts at the bottom of the board - instead of being designed as a welding joint which assumes that a bend of the front stand legs at impact - can be designed so that the front stand legs are fixed at the junction with a bolt, thereby reducing the resistance to the leg bending backwards at the impact. However, it is estimated that this more complicated construction will in most cases prove to be unnecessary.
En udførelse af opfindelsen er nærmere beskrevet i.det følgende, idet der på tegningerne er vist: fig. 1. de mest gængse hidtil anvendte standere til vejtavler 10 (uden brudled) fig. 2. de af Vejdirektoratet anvendte standere med brudled, som i princip virker ligesom de US. patent nr. 4.278.228 beskrevne.An embodiment of the invention is further described in the following, with reference to the drawings: FIG. 1. the most commonly used stands for road boards 10 (without fracture) fig. 2. the stands used by the Road Directorate with fracture joints, which basically work like the US. U.S. Patent No. 4,278,228.
fig. 3. rørgitterstander ifølge opfindelsen.FIG. 3. pipe grilles according to the invention.
15 fig. 4. detail visende fundamentplade og forskydningsbrudled.FIG. 4. detail showing foundation plate and shear fracture joint.
fig. 5. detail visende alternativ udførelse af knudepunkt (3).FIG. 5. detail showing alternative execution of node (3).
på figur 3 er vist en stander iflg. opfindelsen med ophængt vejtavle, der ses i snit (7). Standeren, der er fremstillet af stål-20 rør, består af et lodret forreste standerben (1) og et skråt stillet bageste standerben (5). De to standeben, der foroven er svejset sammen, er i tavlehøjde afstivet indbyrdes med vandrette stivere, hvis antal vil afhænge af tavlehøjden. Ved den nederste vandrette stiver ved tavlens underkant - normalt i ca 2,5 m høj-25 de over kørebanen af hensyn til trafikanternes frie udsyn til tavlerne - er der ført en skråstiver (4) fra knudepunktet (3) på forreste standerben ned til bageste standerben (5) ved dettes fundamentplade (6). De nederste ca 2,5 m af forreste standerben (1) er således uafstivet i forhold til resten af gitterkonstruk-30 tionen og er fikseret ved sin fastspænding til fundamentet med fundamentpladen (2), der er udformet på en - iøvrigt allerede kendt - måde som et forskydningsbrudleds-fundament, der tillader det forreste standerben at løsrives og bøjes bagud ved en eventuel påkørsel. Se iøvrigt detailtegning, figur 4.Figure 3 shows a stand according to. the invention with suspended road sign seen in section (7). The stand, made of steel 20 tubes, consists of a vertical front stand (1) and an oblique rear stand (5). The two stand legs welded together at the top of the board are stiffened at horizontal height with horizontal struts, the number of which will depend on the height of the board. At the lower horizontal strut at the bottom of the board - usually about 2.5 m high above the carriageway for the free view of the road users - a slanting strut (4) has been moved from the junction (3) on the front stand leg to the rear stand leg (5) at its base plate (6). Thus, the lower about 2.5 m of the front stand (1) is non-stiffened with respect to the rest of the grid structure and is fixed by its clamping to the foundation with the foundation plate (2), which is formed in a manner - otherwise already known - as a shear fracture joint that allows the front stand leg to be detached and bent backward in the event of a collision. See also detail drawing, figure 4.
3535
Fundamentpladen (6) for det bageste standerben (5) er udformet som et forskydningsbrudleds-fundament på samme måde som forreste bens fundamentplade, kun med den forskel, der følger af, at skråstiveren (4) er sammensvejset med standerben (5) umiddelbart over fundamentpladen.The base plate (6) of the rear upright leg (5) is formed as a shear fracture joint in the same way as the base leg of the anterior leg, only with the difference that the oblique strut (4) is welded to the upright leg (5) immediately above the foundation plate. .
5 DK 168226 B1 På figur 5 er vist en alternativ udførelse af det på figur 3 viste knudepunkt (3). Ved denne konstruktion opnås, at forbindelsen mellem nederste del af det forreste standerben og resten af gitterkonstruktionen bliver endnu mere fleksibel, så standerbenet 5 lettere bøjes bagud ved påkørsel.5 DK 168226 B1 Figure 5 shows an alternative embodiment of the node (3) shown in Figure 3. In this construction, the connection between the lower part of the front stand leg and the rest of the grid structure is made even more flexible, so that the stand leg 5 is more easily bent backwards on impact.
Claims (3)
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DK38791A DK168226B1 (en) | 1991-03-05 | 1991-03-05 | Stand with break joint for erection of roadsigns |
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DK38791A DK168226B1 (en) | 1991-03-05 | 1991-03-05 | Stand with break joint for erection of roadsigns |
DK38791 | 1991-03-05 |
Publications (3)
Publication Number | Publication Date |
---|---|
DK38791D0 DK38791D0 (en) | 1991-03-05 |
DK38791A DK38791A (en) | 1992-09-06 |
DK168226B1 true DK168226B1 (en) | 1994-02-28 |
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Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
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DK38791A DK168226B1 (en) | 1991-03-05 | 1991-03-05 | Stand with break joint for erection of roadsigns |
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DK (1) | DK168226B1 (en) |
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
WO2006031126A1 (en) * | 2004-09-16 | 2006-03-23 | Juralco As | Collision-safe frame for large traffic gantries |
-
1991
- 1991-03-05 DK DK38791A patent/DK168226B1/en not_active IP Right Cessation
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
WO2006031126A1 (en) * | 2004-09-16 | 2006-03-23 | Juralco As | Collision-safe frame for large traffic gantries |
Also Published As
Publication number | Publication date |
---|---|
DK38791D0 (en) | 1991-03-05 |
DK38791A (en) | 1992-09-06 |
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B1 | Patent granted (law 1993) | ||
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