DK169895B1

DK169895B1 - scaffolding Dragons

Info

Publication number: DK169895B1
Application number: DK034391A
Authority: DK
Inventors: Torsten Johansson
Original assignee: Haki Ab
Priority date: 1990-05-25
Filing date: 1991-02-27
Publication date: 1995-03-27
Also published as: NO176621B; NO910715L; NO176621C; DK34391D0; NO910715D0; SE9001886L; SE9001886D0; SE469085B; DK34391A

Description

DK 169895 B1DK 169895 B1

Den foreliggende opfindelse angår en belastningsoptagende drager til byggestilladser og lignende, hvor drageren i sine endeområder er forsynet med momentoptagende afstivning.BACKGROUND OF THE INVENTION The present invention relates to a load-lifting scaffold for construction scaffolds and the like, in which the carrier is provided in its end regions with torque-absorbing bracing.

Et byggestillads af denne art består i princippet af lodrette 5 rundholter samt vandrette dragere. Dette gitterværk komplementeres derefter med bomlag, sikkerhedsrækværk, vej fastgørelse, stiger osv. for at danne et byggestillads.A building scaffold of this kind consists in principle of vertical 5 round holes as well as horizontal supports. This grid is then supplemented with boom layers, safety railings, road attachment, ladders, etc. to form a construction scaffold.

Fra CH-A-409.346 kendes en kostbar og kompliceret drager, som er opbygget af både en yderdrager og en inderdrager med et 10 deraf følgende stort materialeforbrug.From CH-A-409,346 a costly and complicated carrier is known which is made up of both an outer carrier and an inner carrier with a consequent large consumption of material.

Fra CH-A-542.973 kendes en drager, som består af et rør med et afstivningselement i den ene eller begge ender. Afstivningselementet er dannet ved, at den ene eller begge ender af røret går over i et U-formet profil. Selve enden af afstivningsele-15 mentet danner den stive del af en klokobling til fastgørelse af drageren. Når den som rør udformede lukkede profil af drageren ved enderne går over til en U-formet profil, som jo er åben, medfører dette naturligvis en forringelse af dragerens evne til at optage en lodret belastning.From CH-A-542,973 a carrier is known which consists of a pipe with a stiffening element at one or both ends. The stiffening element is formed by the one or both ends of the tube passing into a U-shaped profile. The very end of the stiffening element forms the rigid part of a bell coupling for attaching the carrier. Of course, when the closed-profile profile of the carrier at the ends switches to a U-shaped profile which is open, this naturally leads to a deterioration of the carrier's ability to absorb a vertical load.

20 Desuden kendes en anordning ved et bygningsstillads fra SE-B-349.089, som har samme ansøger, som den foreliggende opfindelse. Ansøgeren har her til stilladset udnyttet en teknik, som indebærer, at dragerne hægtes fast og låses ved rundholterne. De belastninger, som et stillads skulle kunne modstå, 25 bestemmes i Sverige af Arbejdersikkerhedsstyrelsen, hvor der tages hensyn til, hvilket formål stilladset skal anvendes til.In addition, a device is known at a building scaffold from SE-B-349,089 having the same applicant as the present invention. The applicant has used a scaffold for this purpose, which means that the kites are fastened and locked at the round holes. The loads that a scaffold could withstand 25 are determined in Sweden by the National Board of Occupational Safety and Health, which takes into account the purpose for which the scaffold is to be used.

For at opfylde disse krav har det tidligere været normalt, at dragerne udgøres af to vandrette rør med tværstag imellem, mens de for korte dragere, som ikke udsættes for alt for store 30 belastninger, har kunnet udgøres af et vandret rør.In order to meet these requirements, it has been customary in the past for the kites to be made up of two horizontal pipes with cross bars between them, while for short porters, which are not subjected to excessive loads, could have been made up of a horizontal pipe.

Når stilladset er monteret og det begynder at blive belastet, såsom af arbejdere og deres værktøj samt forskellige typer af DK 169895 B1 2 materialer, må hver separat drager optage en del af den totale 1 belastning på stilladset. Udover at optage belastningen virker dragerne afstivende i stilladssystemet. v I og med at den separate drager må optage en belastning, som 5 almindeligvis betyder en fordelt belastning langs dens længde, opstår der ved området af dens fastgørelse til rundholterne en momentpåvirkning, som må optages, for at der ikke skal opstå knæk eller bøjninger i stilladset.When the scaffold is mounted and it starts to be loaded, such as by workers and their tools as well as different types of DK 169895 B1 2 materials, each separate carrier must take part of the total 1 load on the scaffold. In addition to picking up the load, the dragons work rigidly in the scaffolding system. Since the separate carrier must take up a load, which generally means a distributed load along its length, a torque effect arises in the area of its attachment to the round holes, which must be absorbed so that no cracks or bends occur scaffolding.

Dette moment må således optages af dragerens endeområder.This torque must thus be absorbed by the end regions of the carrier.

10 Formålet med opfindelsen er således med simplere og billigere fremstilling og med mindre materialeforbrug at tilvejebringe en stilladsdrager, som har samme eller bedre belastningsoptagende egenskaber, end de stilladsdragere, som der for tiden anvendes.The object of the invention is thus to provide, with simpler and less expensive manufacture and with less material consumption, a scaffold carrier having the same or better load-bearing properties than the scaffold carriers currently used.

15 Stilladsdrageren ifølge den foreliggende opfindelse er ejendommelig ved de i den kendetegnende del af krav 1 angivne træk.The scaffold carrier according to the present invention is characterized by the features specified in the characterizing part of claim 1.

Den færdige drager har derved forstærkningsområder ved begge dragerenderne, som gør, at en større belastning kan optages, 20 end hvis rørets ender, som udgør hoveddelen af drageren, ikke omformes. Ved forstærkningsdelens omformning til dråbeforms-lignende tværsnit, hvor dråbens spids slutter an mod staget, optages momentkræfterne forårsaget af dragerens belastning bedre takket være, at der opnås en materialeforstærkning i 25 lodret plan parallelt med staget. Forstærkningsdelen udgør en integreret del af røret, hvilket gør, at fremstillingen af stilladsdrageren bliver enklere og dermed billigere sammenlignet med, hvis specielle dele fastgøres på dragerenderne med henblik på forstærkning. * 30 Opfindelsen forklares nedenfor under henvisning til tegningen, i hvor DK 169895 B1 3 fig. 1 viser fra siden en del af stilladsdrageren, og fig. 2 et tværsnit langs linien II-II i fig. 1.The finished carrier thereby has reinforcing regions at both carrier ends which allow a greater load to be absorbed than if the ends of the tube which make up the body of the carrier are not reshaped. By transforming the reinforcing member into droplet-like cross sections where the tip of the drop joins the rod, the torque forces caused by the load of the carrier are better absorbed thanks to a vertical reinforcement of material parallel to the rod. The reinforcing member forms an integral part of the tube, which makes the manufacture of the scaffold carrier simpler and thus cheaper compared to if special parts are attached to the carrier ends for reinforcement. The invention is explained below with reference to the drawing, in which DK 169895 B1 3 FIG. 1 is a side view of a portion of the scaffold carrier; and FIG. 2 is a cross-sectional view taken along line II-II of FIG. First

Den i fig. 1 viste del af en vandret stilladsdrager 1 har fastkrogningselement til fastgørelse på lodrette rundholter 5 (ikke vist). Selv om der kun er vist dragerens l ene ende, er det underforstået, at dragerens anden ende har samme udformning men dog spejlvendt, hvorfor vi har valgt udelukkende at vise og beskrive denne ene ende. Dragerens ender er stukkede over et værktøj for at danne en afstivningsdel 4. Til fastgø-10 relse af drageren 1 i de lodrette rundholter findes der to hager 2 på bjælkeenden, hvor den øvre sidder på afstivningssde-len 4, mens den nedre sidder på et stag 5, og hvilke hager passer i tilsvarende udtagninger på rundholten. For at sikre fastgørelsen findes der også en låseklap 3, som er vridbart 15 lejret på staget 5.The FIG. 1 of a horizontal scaffold carrier 1 has a hooking element for attachment to vertical round holder 5 (not shown). Although only one end of the carrier is shown, it is understood that the other end of the carrier has the same design but is mirrored, which is why we have chosen to only show and describe this one end. The ends of the carrier are knitted over a tool to form a support member 4. To secure the carrier 1 to the vertical round holes, two hooks 2 are provided on the beam end, the upper one being on the support part 4 while the lower one is on a support member. rod 5, and which hooks fit into corresponding recesses on the round cavity. To secure the attachment, there is also a locking tab 3 which is pivotally mounted on the stay 5.

Ved fremstillingen af drageren stukkes rørenden først over et specielt værktøj til den i tværsnit omtrent har dråbeform, som vist i fig. 2. Derefter svejses staget 5 med låseklappen 3 samt den nedre hage 2 fast på den stukkede rørende. Den øvre 20 hage 2 svejses direkte fast på afstivningsdelen 4.In the manufacture of the carrier, the pipe end is first knitted over a special tool until it has a cross-sectional shape approximately in shape, as shown in FIG. 2. Then the rod 5 is welded with the locking flap 3 as well as the lower hook 2 to the broken pipe. The upper 20 hook 2 is welded directly to the stiffener 4.

Den færdige drager har derved forstærkningsområder 4 ved begge dragerenderne, som gør, at en større belastning kan optages, end hvis rørets ender, som udgør hoveddelen af drageren, ikke omformes. Ved forstærkningsdelens omformning til dråbe-25 formslignende tværsnit, hvor dråbens spids slutter an mod staget 5, optages momentkræfterne forårsaget af dragerens belastning bedre takket være, at der opnås en materialeforstærkning i lodret plan parallelt med staget. Forstærkningsdelen udgør en integreret del af røret, hvilket gør, at frem-30 stillingen af stilladsdrageren bliver enklere og dermed billigere sammenlignet med, hvis specielle dele fastgøres på dragerenderne med henblik på forstærkning.The finished carrier thereby has reinforcing regions 4 at both of the carrier ends which allow a greater load to be absorbed than if the ends of the pipe, which constitute the main part of the carrier, are not reshaped. By transforming the reinforcing member into droplet-like cross-sections where the tip of the drop joins the rod 5, the torque forces caused by the load of the carrier are better absorbed thanks to a vertical plane material reinforcement parallel to the rod. The reinforcing member forms an integral part of the tube, which makes the production of the scaffold carrier simpler and thus cheaper compared to if special parts are attached to the carrier ends for reinforcement.

Claims

DK 169895 B1 y Kits for building scaffolding or the like comprising a horizontal elongated member (1) with a fastener at each end, and the elongated member (1) being mainly a circular cross-sectional tube, characterized by torque receiving braces ( 4) at the ends of the element (1), which struts have a drop-like cross-section with the point directed vertically downwards, whereby a vertical downward-facing 10 rod (5) joins the tip of the droplet-like cross-section along the entire length of the support (4), and where two hooks (2) ) is attached to each of the short ends of the dragon.