HRP20020436A2

HRP20020436A2 - Shelving

Info

Publication number: HRP20020436A2
Application number: HR20020436A
Authority: HR
Inventors: Ulrich Bohnacker
Original assignee: Tegometall Int Ag
Priority date: 2000-09-21
Filing date: 2002-05-20
Publication date: 2004-02-29
Also published as: DE10046947A1; WO2002024030A1; UY26940A1; CN1400875A; BG106844A; JP2004508864A; PL354255A1; BR0107233A; MXPA02004995A; IL149215A0; JP4370094B2; CN1189121C; WO2002024030B1; ECSP024256A; HK1053959A1; RU2003107680A; EP1322202A1; YU36502A; HUP0204004A2; ZA200203251B

Description

Izum se odnosi na konstrukcijske elemente za police (konstrukcijski elementi polica), posebno na stupove ili poprečne križne grede za čelične police. The invention relates to structural elements for shelves (structural elements of shelves), especially to columns or transverse cross beams for steel shelves.

Obične police sadržavaju sklop od vertikalnih stupova (mosnice) i križnih horizontalnih greda (spojne grede) i nosivih okvira ili drugih greda koje nose ploče ili police za skladištenje roba. Ordinary shelves contain an assembly of vertical columns (bridges) and cross horizontal beams (connecting beams) and load-bearing frames or other beams that support panels or shelves for storing goods.

Za stupove, dijagonalne poprečne grede i druge grede takvih polica koriste se konstrukcijski elementi raznih profila. Izraz “profil” se ovdje niže koristi za određivanje oblika konstrukcijskog elementa u području poprečnog presjeka okomitog na dužinu elementa. Structural elements of various profiles are used for columns, diagonal transverse beams and other beams of such shelves. The term "profile" is used here below to define the shape of a structural element in the cross-sectional area perpendicular to the length of the element.

Takvi konstrukcijski elementi mogu biti proizvedeni iz plosnatog valjanog metalnog lima, koji je oblikovan valjanjem (kontinuirano savijanje pomoću valjaka), s namjerom da bi se oblikovao konstrukcijski element željenog profila. Profil je jednak duž cijele dužine konstrukcijskog elementa. Jedan primjer za oblikovanje konstrukcijskog elementa valjanjem iz metalnog lima je otkriven u EP-A-O 715 974. Such structural elements can be produced from a flat rolled metal sheet, which is shaped by rolling (continuous bending using rollers), with the intention of forming a structural element of the desired profile. The profile is the same along the entire length of the structural element. One example for the roll forming of a structural element from sheet metal is disclosed in EP-A-0 715 974.

Veliki broj pokušaja optimiranja efikasnosti upotrebe materijala i mogućnosti nošenja tereta ovakvih konstrukcijskih elemenata opisan je u literaturi. Na primjer, DE-A-24 59 421 otkriva dvostruki T-profil koji se upotrebljava kao križno stavljena greda u čeličnim policama. Ovaj profil ima paralelnu gornju i donju prirubnicu, koje su spojene poveznim dijelom. On je oblikovan od jednog metalnog lima na takav način da se gornje i donje prirubnice, koje su relativno jako napregnute, sastoje od dva sloja metalnog lima, dok se povezni dio, koji je relativno malo napregnut, sastoji od samo jednog sloja metalnog lima. Dva sloja metalnog lima gornjih i donjih prirubnica dobiveni su, svaki od njih, savijanjem jednostrukog metalnog lima. DE-A-24 21 918 prikazuje sličan element koji ima odvojenu traku metalnog lima umetnutu između dva sloja svake gornje i donje prirubnice, da bi time bio dodatno pojačan konstrukcijski element. Daljnji konstrukcijski elementi za police, koji su načinjeni od jednoslojnog ili višeslojnog metalnog lima, prikazani su u DE-C-26 28 537 i DE-A-30 02 401. A large number of attempts to optimize the efficiency of the use of materials and the ability to carry the load of such structural elements are described in the literature. For example, DE-A-24 59 421 discloses a double T-profile used as a cross-beam in steel shelves. This profile has parallel upper and lower flanges, which are connected by a connecting part. It is formed from a single metal sheet in such a way that the upper and lower flanges, which are relatively highly stressed, consist of two layers of sheet metal, while the connecting part, which is relatively lightly stressed, consists of only one layer of sheet metal. The two layers of sheet metal of the upper and lower flanges were obtained, each of them, by bending a single sheet of metal. DE-A-24 21 918 shows a similar element having a separate strip of sheet metal inserted between the two layers of each upper and lower flange, to thereby further strengthen the structural element. Further structural elements for shelves, which are made of single-layer or multi-layer metal sheet, are shown in DE-C-26 28 537 and DE-A-30 02 401.

Nasuprot gore navedenim dokumentima, koji otkrivaju proizvodnju profila s dijelovima koji imaju različitu čvrstoću zbog upotrebe različitog broja slojeva metalnog lima, WO 00/29138 otkriva postupak za proizvodnju konstrukcijskog elementa polazeći od metalnog lima koji ima pojedine dijelove različitih debljina. Metalni lim je dobiven zavarivanjem dvije trake od tanjeg metalnog lima po uzdužnim rubovima trake debljeg metalnog lima. Dvije tanje trake se tada saviju tako da se dobije U-profil s tanjim nogama i debljim poveznim dijelom. Profil je jednak duž cijele dužine elementa. DE-C-195 25 347 i WO 99/05380 otkrivaju čelični konstrukcijski element za upotrebu kod automobilskog tijela ili kod zgrada, koji ima na sebi navarene ploče za pojačanje. Onaj koji je otkriven u WO 99/05380 je ispunjen betonom. In contrast to the above-mentioned documents, which disclose the production of profiles with parts having different strength due to the use of a different number of metal sheet layers, WO 00/29138 discloses a process for the production of a structural element starting from a metal sheet having individual parts of different thicknesses. The metal sheet is obtained by welding two strips of thinner metal sheet along the longitudinal edges of the strip of thicker metal sheet. The two thinner strips are then bent to form a U-profile with thinner legs and a thicker connecting part. The profile is the same along the entire length of the element. DE-C-195 25 347 and WO 99/05380 disclose a steel structural element for use in an automobile body or in buildings, having reinforcement plates welded thereon. The one disclosed in WO 99/05380 is filled with concrete.

Cilj izuma je osigurati konstrukcijski element za police, koji je povoljan po cijeni, s optimiranom upotrebom materijala i optimiranim mogućnostima nošenja tereta. Daljnji cilj je osiguranje postupka proizvodnje za takav konstrukcijski element za police. The aim of the invention is to provide a structural element for shelves, which is favorable in price, with optimized use of materials and optimized load-carrying capabilities. A further goal is to provide a manufacturing process for such a structural element for shelves.

Ovi ciljevi su riješeni konstrukcijskim elementom za police prema patentnom zahtjevu 1 i postupkom prema patentnom zahtjevu 9. These goals are solved by the structural element for shelves according to patent claim 1 and the process according to patent claim 9.

Kod optimiranja konstrukcijskih elemenata za police u stanju tehnike, pažnja je bila posvećena uglavnom optimiranju profila, koji je bio održavan jednak duž cijele dužine elementa. Izum se pak temelji na ideji da se dopuštaju različiti profili za različite dijelove u uzdužnom smjeru konstrukcijskog elementa za police. Kod toga se uzima u obzir to, što različiti uzdužni dijelovi konstrukcijskog elementa za police nose različite terete. Na primjer, svaki pojedini dio stupa police nosi samo teret polica iznad njega, i na taj način se smanjuje teret od dna prema vrhu. When optimizing structural elements for shelves in the state of the art, attention was paid mainly to optimizing the profile, which was kept equal along the entire length of the element. The invention is based on the idea that different profiles are allowed for different parts in the longitudinal direction of the structural element for shelves. This takes into account the fact that different longitudinal parts of the structural element for shelves carry different loads. For example, each individual section of a shelf column carries only the load of the shelves above it, thus reducing the load from the bottom to the top.

Konstrukcijski element za police ima profilnu gredu. Različiti poprečni presjeci profila konstrukcijskog elementa za police dobiveni su pomoću trake za pojačanje koja pojačava profilnu gredu i pruža se po dužini, ali samo po jednom njenom dijelu, a ne po cijeloj dužini profilne grede ili konstrukcijskog elementa za police. To rezultira također efikasnijom upotrebom materijala. The structural element for the shelves has a profile beam. Different cross-sections of the profile of the structural element for shelves are obtained by means of a reinforcing strip that reinforces the profile beam and extends along its length, but only along one part of it, and not along the entire length of the profile beam or structural element for shelves. This also results in a more efficient use of materials.

Traka za pojačanje može biti oblikovana tako da je integralno spojena s profilnom gredom. Povoljno je pak što su obje odvojeni komadi od limenog materijala, koji se za vrijeme proizvodnje konstrukcijskog elementa za police, zajednički dovode i spajaju jedan s drugim. The reinforcing strip can be shaped so that it is integrally connected to the profile beam. It is advantageous that both are separate pieces of sheet material, which are brought together and connected to each other during the production of the structural element for the shelves.

Premda je polica za vrijeme isporuke i transporta obično rastavljena i slaže se samo na konačnom odredištu radi uštede volumena u transportu, njena velika težina može uzrokovati troškove prijevoza, koji prelaze troškove proizvodnje. Efikasna upotreba materijala u skladu s izumom smanjuje težinu police u odnosu na njene mogućnosti nošenja tereta i tako smanjuje troškove proizvodnje i transporta. Although the shelf is usually disassembled during delivery and transport and is only stacked at the final destination to save volume in transport, its heavy weight can cause transport costs that exceed production costs. Efficient use of materials in accordance with the invention reduces the weight of the shelf in relation to its load-carrying capabilities and thus reduces production and transportation costs.

Ovisni patentni zahtjevi su usmjereni na povoljna ostvarenja izuma. Dependent patent claims are directed to beneficial embodiments of the invention.

Ovisni patentni zahtjevi 2 do 4 se odnose na povoljne načine međusobnog spajanja trake za pojačanje i profilne grede. Dependent patent claims 2 to 4 relate to advantageous ways of mutually connecting the reinforcing strip and the profile beam.

Ostvarenje u skladu s patentnim zahtjevom 5 ima naročitu prednost u tome, što traka za pojačanje nema utjecaj na izgled police. The embodiment according to patent claim 5 has the particular advantage that the reinforcing tape does not affect the appearance of the shelf.

Patentni zahtjevi 6 do 8 se odnose, posebnije, na ostvarenja konstrukcijskih elemenata za police, koji uključuju efikasno korištenje materijala s velikim mogućnostima nošenja tereta. Patent claims 6 to 8 refer, more specifically, to realizations of structural elements for shelves, which include the efficient use of materials with great load-carrying capabilities.

Patentni zahtjevi 9 do 13 se odnose na štedljive postupke za proizvodnju konstrukcijskih elemenata za police, koji su u skladu s izumom. Patent claims 9 to 13 relate to economical processes for the production of structural elements for shelves, which are in accordance with the invention.

Povoljna ostvarenja izuma će sada biti opisana povezano s crtežima, gdje Advantageous embodiments of the invention will now be described in connection with the drawings, wherein

Slika 1 prikazuje policu za teške terete, Figure 1 shows a heavy duty shelf,

Slike 2 i 3 prikazuju shematsko predstavljanje dva različita uređaja za proizvodnju konstrukcijskih elemenata za police, i Figures 2 and 3 show a schematic representation of two different devices for the production of structural elements for shelves, i

Slika 4 prikazuje poprečnu križnu gredu. Figure 4 shows a transverse cross beam.

Polica za teške terete, koja je prikazana na slici 1, obuhvaća vertikalne stupove 1, koji su međusobno spojeni horizontalnim poprečnim križnim gredama 2 te horizontalnim i dijagonalnim poveznim potpornjima 4. Korisne površine polica 3 i upuštene prečke 5, koje se koriste za odlaganje robe, oslanjaju se na poprečne križne grede 2. Bazna ploča 9 je navarena na donju plohu svakog stupa 1. Vezna ploča 10 je navarena na svaku bočnu stranu svake poprečne križne grede 2 i ima kuke (nisu prikazane) za zahvaćanje s rupama (nisu prikazane) na stupovima 1. Stupovi 1, poprečne križne grede 2, povezni potpornji 4 i upuštene prečke 5 su razni konstrukcijski elementi za police, koji su načinjeni od čelika. Svaki dio stupa za police 1 nosi dio tereta na polici, koji se nalazi iznad njega. Na taj način opterećenje teretom na stup 1 raste od vrha do dna stupa. Ovaj porast opterećenja je uzet u obzir kod profila stupa 1. The shelf for heavy loads, which is shown in Figure 1, includes vertical columns 1, which are connected to each other by horizontal transverse cross beams 2 and horizontal and diagonal connecting supports 4. The useful surfaces of the shelves 3 and recessed crossbars 5, which are used for storing goods, they rest on the transverse cross beams 2. A base plate 9 is welded to the lower surface of each column 1. A connecting plate 10 is welded to each side of each transverse cross beam 2 and has hooks (not shown) for engagement with holes (not shown) on columns 1. Columns 1, transverse cross beams 2, connecting supports 4 and recessed crossbars 5 are various structural elements for the shelves, which are made of steel. Each part of the shelf column 1 carries part of the load on the shelf, which is located above it. In this way, the load on pillar 1 increases from the top to the bottom of the pillar. This increase in load is taken into account in the profile of column 1.

Slika 1 također prikazuje profil stupa 1 u poprečnom presjeku okomito na dužinu stupa u dva položaja. Stup 1 obuhvaća profilnu gredu 11 koja se proteže duž njegove cijele dužine. Profilna greda je načinjena valjanjem od metalnog lima i ima isti šuplji profil duž svoje cijele dužine. Šuplji profil nije potpuno zatvoren, budući da svaki stup 1 ima prorez 8 duž cijele dužine stupa, s tim da su stupovi 1 okrenuti jedan prema drugome duž uže strane police. Povezni potpornji su zahvaćeni u proreze 8 i u njima su učvršćeni zavarivanjem ili vijčanim spojem. Figure 1 also shows the profile of pillar 1 in a cross-section perpendicular to the length of the pillar in two positions. Column 1 includes a profile beam 11 that extends along its entire length. The profile beam is made by rolling from sheet metal and has the same hollow profile along its entire length. The hollow profile is not completely closed, since each post 1 has a slot 8 along the entire length of the post, with the posts 1 facing each other along the narrow side of the shelf. The connecting supports are caught in slots 8 and fixed in them by welding or screwing.

Profil u gornjem dijelu 6 svakog stupa je isključivo definiran profilom grede 11. Donji dio 7 stupa 1, pak sadržava dvije dodatne trake za pojačanje 12, koje se protežu duž stupa i učvršćene su na dvije suprotne unutarnje stijene profilne grede 11. Učvršćenje može biti načinjeno zavarivanjem, vijčanim spojem, oblaganjem, zakivanjem ili drugim poznatim ili nepoznatim postupcima. The profile in the upper part 6 of each column is exclusively defined by the profile of the beam 11. The lower part 7 of the column 1, on the other hand, contains two additional reinforcing strips 12, which extend along the column and are fixed on two opposite inner walls of the profile beam 11. The fastening can be made by welding, bolting, cladding, riveting or other known or unknown procedures.

Trake za pojačanje 12 su stavljene na one unutarnje stijene profilne grede 11, koje su okomite na stijenu na kojoj je prorez 8. Dakle, one pojačavaju stup 1 protiv savijanja u ravnini prednje strane ili stražnje strane police, to jest u ravnini poprečnih križnih greda 2. Ovo pojačanje je važno, jer, osim uskih bočnih strana police, ove prednje i stražnje strane nemaju uopće ili imaju samo nekoliko dijagonalnih potpornja, budući da bi ovi ometali pristup policama. Nadalje, poprečne križne grede 2 često nisu suviše kruto zahvaćene u stupovima 1 i tako je njihova sposobnost da podupiru stupove ograničena. Reinforcement strips 12 are placed on those inner walls of the profile beam 11, which are perpendicular to the wall on which there is a slot 8. Thus, they strengthen the column 1 against bending in the plane of the front or back of the shelf, that is, in the plane of the transverse cross beams 2 .This reinforcement is important, because, apart from the narrow sides of the shelf, these front and back sides do not have any or only a few diagonal supports, since these would hinder access to the shelves. Furthermore, the transverse cross beams 2 are often not too rigidly engaged in the columns 1 and thus their ability to support the columns is limited.

U predmetnom ostvarenju, gornji dio, koji je bez traka za pojačanje 12, proteže se preko 4/5 ili više, a donji dio 7 ima trake za pojačanje 12, koje se protežu od bazne ploče 9 preko oko 1/5 ili manje, dužine stupa police. Kod polica za teške terete, koje su visoke 12 m ili više, trake za pojačanje imaju dužinu do oko 2,5 m. In the present embodiment, the upper part, which is without reinforcement strips 12, extends over 4/5 or more, and the lower part 7 has reinforcement strips 12, which extend from the base plate 9 over about 1/5 or less, of the length shelves. For heavy duty shelves, which are 12 m high or more, the reinforcing strips have a length of up to about 2.5 m.

Slika 2 prikazuje shematsko predstavljanje uređaja za proizvodnju stupova 1. Također je prikazan presjek profila, onako kako je oblikovan u raznim fazama proizvodnog postupka. Uređaj obuhvaća stroj za ravnanje 21, u kojemu je svitak 22 prvog metalnog lima 23, i dva svitka, jedan 24, od kojega je vidljiv samo drugi metalni lim 25. Stroj za ravnanje 21 odmata metalne limove 23, 25 sa svitaka 22, 24, ravna ih i odvodi ih, paralelne jednog s drugim, u istom smjeru. Figure 2 shows a schematic representation of the device for the production of columns 1. Also shown is a section of the profile, as it is formed in various stages of the production process. The device comprises a straightening machine 21, in which the roll 22 of the first metal sheet 23, and two rolls, one 24, of which only the second metal sheet 25 is visible. The straightening machine 21 unrolls the metal sheets 23, 25 from the rolls 22, 24, straightens them and leads them, parallel to each other, in the same direction.

Uređaj nadalje obuhvaća sredstvo za spajanje i oblikovanje valjanjem 26, u kojemu su pojedinačne odrezane trake drugog metalnog lima 25 spojene na prvi metalni lim 23 zavarivanjem ili zakivanjem. Prije ili nakon izrade spoja, prvi metalni lim 23 se oblikuje valjanjem, tako da dobiva profil profilne grede 11. The device further comprises means for joining and forming by rolling 26, in which the individual cut strips of the second metal sheet 25 are joined to the first metal sheet 23 by welding or riveting. Before or after making the connection, the first metal sheet 23 is shaped by rolling, so that it gets the profile of the profile beam 11.

Sredstvo za rezanje 27 reže prvi metalni lim 23 na komade koji imaju dužinu stupa 1, koji je duži nego traka drugog metalnog lima 25, koja je u nju učvršćena. Sredstvo za probijanje otvora 28 (nije prikazano) probija otvore u prvom metalnom limu 23 za zahvaćanje poprečnih križnih greda 2 i za učvršćenje poveznih potpornja 4 vijčanim spajanjem. Eventualno, bazna ploča 9 (slika 1) je navarena na jedan kraj komada dobivenog spajanjem prvog i drugog metalnog lima 23, 25, pri čemu su krajevi prvog i drugog metalnog lima 23, 25 zaravnani. Na stupovima, koji su tako proizvedeni, prvi metalni lim 23 oblikuje profilnu gredu 11, a dvije trake drugog metalnog lima 25 oblikuju trake za pojačanje. The cutting means 27 cuts the first metal sheet 23 into pieces having the length of the post 1, which is longer than the strip of the second metal sheet 25, which is fixed to it. A hole punching means 28 (not shown) punches holes in the first metal sheet 23 for engaging the transverse cross beams 2 and for fixing the connecting supports 4 by screw connection. Eventually, the base plate 9 (Figure 1) is welded to one end of the piece obtained by joining the first and second metal sheets 23, 25, whereby the ends of the first and second metal sheets 23, 25 are aligned. On the columns, which are produced in this way, the first metal sheet 23 forms the profile beam 11, and the two strips of the second metal sheet 25 form the reinforcing strips.

Slika 3 prikazuje modifikaciju uređaja iz slike 2. Ova modifikacija obuhvaća dva različita stroja za ravnanje 31, 32, koji dovode prvi metalni lima 23 i drugi metalni lim 25 iz suprotnih smjerova. Kao i u ostvarenju iz slike 2, metalni limovi 23, 25 su odmotani s odgovarajućih svitaka 22, 24 i izravnani su. Sredstvo za oblikovanje valjanjem i sredstvo za rezanje 33 predviđeni su da daju prvom metalnom limu 23 profil profilne grede 11, režu ga na dužinu stupa 1 i otpremaju u sredstvo za spajanje 34. Sredstvo za spajanje 34 se snabdijeva iz suprotnih smjerova s dvije paralelne trake drugog metalnog lima 25. Ove trake se s prednje strane umeću u profilnu gredu 11, koja je načinjena od prvog metalnog lima 23, i odrezane su na manju dužinu nego što je profilna greda 11, i uz pomoć sredstva za spajanje 34 oblikuju trake za pojačanje 12. Trake za pojačanje su učvršćene na međusobno suprotne unutarnje strane profilne grede 11 zavarivanjem ili zakivanjem. Figure 3 shows a modification of the device from Figure 2. This modification comprises two different straightening machines 31, 32, which supply the first metal sheet 23 and the second metal sheet 25 from opposite directions. As in the embodiment of Figure 2, the metal sheets 23, 25 are unwound from the respective rolls 22, 24 and are flattened. The rolling forming means and the cutting means 33 are provided to give the first metal sheet 23 the profile of the profile beam 11, cut it to the length of the post 1 and send it to the connecting means 34. The connecting means 34 is supplied from opposite directions by two parallel strips of the second metal sheet 25. These strips are inserted from the front side into the profile beam 11, which is made of the first metal sheet 23, and are cut to a smaller length than the profile beam 11, and with the help of the connecting means 34 they form reinforcement strips 12 The reinforcing strips are fixed to the mutually opposite inner sides of the profile beam 11 by welding or riveting.

Budući da su trake za pojačanje 12 kraće nego profilne grede 11, dio 7 stupa sadržava trake za pojačanje, dok je drugi dio 6 bez traka za pojačanje. Since the reinforcing strips 12 are shorter than the profile beams 11, part 7 of the column contains reinforcing strips, while the other part 6 is without reinforcing strips.

Slika 4 prikazuje pogled sa strane na poprečnu križnu gredu 2, dok još vezne ploče 10 nisu navarene na svoja dva kraja. Također su prikazani poprečni presjeci duž linija A-A i B-B. Slično stupu 1, poprečna križna greda 2 sadržava profilnu gredu 41 i traku za pojačanje 42. Profilna greda 41 se pruža duž cijele dužine poprečne križne grede 2 i ima pravokutan šuplji profil u poprečnom presjeku okomitom na njen uzdužni smjer. Šuplji profil nije potpuno zatvoren. Naime, donja strana profilne grede 41 obuhvaća prorez 43. Figure 4 shows a side view of the transverse cross beam 2, while the connecting plates 10 have not yet been welded to their two ends. Cross sections along lines A-A and B-B are also shown. Similar to column 1, the transverse cross beam 2 comprises a profile beam 41 and a reinforcing strip 42. The profile beam 41 extends along the entire length of the transverse cross beam 2 and has a rectangular hollow profile in cross-section perpendicular to its longitudinal direction. The hollow profile is not completely closed. Namely, the lower side of the profile beam 41 includes the slot 43.

Traka za pojačanje 42 smještena je na dno unutar profilne grede 41, gdje pokriva prorez 43. Traka za pojačanje je navarena na prorez 43 profilne grede 41 i prilikom upotrebe nosi dio tereta križne grede 2. Dužina trake za pojačanje je oko 1/5 dužine križne grede 2. Svaki od susjednih krajnjih dijelova 45, koji ima 2/5 dužine križne grade 2, ne sadržava trake za pojačanje. Nadalje trake za pojačanje ipak mogu osigurati na krajnjim dijelovima križne grede 2 povećanje krutosti spoja na spojnoj ploči 10 i time na stupu 1. The reinforcement strip 42 is located at the bottom inside the profile beam 41, where it covers the slot 43. The reinforcement strip is welded to the slot 43 of the profile beam 41 and, when in use, carries part of the load of the cross beam 2. The length of the reinforcement strip is about 1/5 of the length of the cross beams 2. Each of the adjacent end parts 45, which is 2/5 of the length of the cross beam 2, does not contain reinforcement strips. Furthermore, the reinforcing strips can still ensure, at the end parts of the cross beam 2, an increase in the stiffness of the connection on the connecting plate 10 and thus on the column 1.

Uređaj na slikama 2 i 3 može također biti upotrijebljen za proizvodnju poprečnih križnih greda 2, pri čemu je potreban samo jedan svitak za snabdijevanje drugog metalnog lima. The device in figures 2 and 3 can also be used for the production of transverse cross beams 2, where only one roll is required to supply the second metal sheet.

U gore opisanim ostvarenjima stupa 1 i poprečnih križnih grada 2, traka za pojačanje 12, 42 je načinjena odvojeno od limenog materijala profilne grede 11, 41 i učvršćena je na svojoj plosnatoj strani na profilnu gredu. I prvi i drugi materijal lima 23, 25 imaju isti sastav metala i debljinu, a razlikuju se samo po svojoj širini. Ipak se mogu upotrijebiti također i različiti materijali i/ili različite debljine. Također je razumno proizvoditi trake za pojačanje integralno s profilnom gredom savijanjem dijela lima profilne grede prema traci za pojačanje, koja je u njemu smještena. In the above-described embodiments of the column 1 and the transverse cross bars 2, the reinforcing strip 12, 42 is made separately from the sheet material of the profile beam 11, 41 and is fixed on its flat side to the profile beam. Both the first and second sheet material 23, 25 have the same metal composition and thickness, and differ only in their width. However, different materials and/or different thicknesses can also be used. It is also reasonable to produce the reinforcement strips integrally with the profile beam by bending part of the sheet of the profile beam towards the reinforcement strip, which is located in it.

Također i drugi konstrukcijski elementi koji se koriste u policama, takvi kao povezni potpornji 4 i upuštene grede 5, mogu imati konstrukciju prikazanu na slici 4. Poželjno je da se profilna greda pruža preko cijele dužine konstrukcijskog elementa za police, dok se traka za pojačanje pruža duž 1/20 ili 1/10 do 1/5 ili 1/2 dužine konstrukcijskog elementa police ili profilne grede. Na taj način, budući da se traka za pojačanje ne pruža po cijeloj dužini, nego se samo stavlja gdje je teret najveći, može biti postignuta velika čvrstoća uz relativno malu težinu. Profilna greda je šuplja, izuzev što uključuje traku za pojačanje ili trake za pojačanje. I profilna greda ima uzdužni prorez, to jest ima otvoren profil koji olakšava proizvodnju pomoću oblikovanja valjanjem. Police za teške terete, koje sadržavaju konstrukcijske elemente za police u skladu s izumom, mogu tipično nositi 50% veće terete nego konvencionalne police koje imaju jednaku težinu. Also, other structural elements used in the shelves, such as connecting supports 4 and recessed beams 5, can have the construction shown in Figure 4. It is preferable that the profile beam extends over the entire length of the structural element for the shelves, while the reinforcement strip extends along 1/20 or 1/10 to 1/5 or 1/2 of the length of the structural element of the shelf or profile beam. In this way, since the reinforcing tape does not extend along the entire length, but is only placed where the load is greatest, high strength can be achieved with relatively low weight. The profile beam is hollow, unless it includes a reinforcing strip or strips. And the profile beam has a longitudinal slot, that is, it has an open profile that facilitates production by means of roll forming. Heavy duty racks incorporating rack construction elements in accordance with the invention can typically carry 50% greater loads than conventional racks of equal weight.

Claims

1. Column of the shelf, characterized by the fact that it includes: longitudinal hollow profile beam (11) formed from the first sheet material (23) and a pair of reinforcing strips (12) formed from another sheet material (25), each having a shorter length than the profile beam (11) and mounted on the inner opposite surfaces of the profile beam (11, 41) along the lower part (7) ) steps in to reinforce it.

2. Transverse cross beam for shelves, characterized by the fact that it includes: longitudinal hollow profile beam (11) formed from the first sheet material (23) and a reinforcing strip (42), which is formed from another sheet material (25), which has a shorter length than the profile beam (41) and is mounted on the inner surface of the profile beam (11, 41) along the central part (44) of the cross beam for reinforcements of the same.

3. Shelf column or cross beam according to claim 1 or 2, characterized in that the reinforcing strip (12, 42) is connected to the profile beam (11, 41) by means of a known fixture.

4. Shelf column or cross beam according to claim 1 or 2, characterized in that the reinforcing strip (12, 42) is connected to the profile beam (11, 41) by riveting.

5. Shelf column or cross beam according to claim 1 or 2, characterized in that the reinforcing strip (12, 42) is welded to the profile beam (11, 41).

6. Shelf column or cross beam in accordance with any of claims 1 to 5, characterized in that the first and second sheet materials are first and second metal sheets, respectively.

7. A process for the production of a shelf column or a cross beam (1, 2) in accordance with any of claims 1 to 6, characterized in that it contains the following steps: delivery of the first sheet material (23), supplying the reinforcing strip (12, 42) of the second sheet material (25) parallel to the first sheet material, and forming the first sheet material into a profile beam (11), whereby the reinforcement strip (12) is delivered in a shorter length than the profile beam (11) and is fixed to the profile beam.

8. The method according to claim 7, characterized in that the reinforcing strip (12) is first cut to length and then attached to the first sheet material (23), which is then formed into a profile beam (11).

9. The method according to patent claim 7, characterized in that the first sheet material (23) is first formed into a profile beam (11) and is then connected to the reinforcing strip (12), which is cut to length.

10. The method according to any one of patent claims 7 to 9, characterized in that the delivery of the first and second sheet materials (23, 25) is carried out in the same direction.

11. The method according to any one of patent claims 7 to 10, characterized in that the supply of the first and second sheet materials (23, 25) is carried out in the opposite direction.