WO2017214689A1

WO2017214689A1 - Side wall with folding plates

Info

Publication number: WO2017214689A1
Application number: PCT/BE2017/000029
Authority: WO
Inventors: Erik Ronny Felix Rogiers
Original assignee: Versus Invest Bvba
Priority date: 2016-06-17
Filing date: 2017-06-16
Publication date: 2017-12-21
Also published as: CN109311374B; PT3471983T; JP7076436B2; KR20190020673A; PL3471983T3; CN109311374A; BE1024301B1; BE1024301A1; AU2017285712B2; HUE056020T2; JP2019527165A; AU2017285712A1; KR102499561B1; EP3471983B1; EP3471983A1; ES2887649T3

Abstract

System for attaching a tarpaulin for the purpose of closing a side of a loading space, which system comprises an upper support beam and a lower support beam, which system further comprises a plurality of upright supporting beams which each comprise an upper carriage and a lower carriage such that the upright supporting beams are connected via the carriages to the support beams and are movable in the longitudinal direction relative to the support beams, which plurality of upright supporting beams are provided for the purpose of connecting to the tarpaulin so that the tarpaulin can be opened and closed by moving the upright supporting beams, wherein the system further comprises folding plates which each comprise a substantially central fold zone and two peripheral pivot zones, wherein the folding plates mutually connect adjacent upright supporting beams in a manner such that the peripheral pivot zones of each folding plate extend against an outer side of a respective supporting beam and at a distance from the edge of this outer side.

Description

ί

S¾k wall wit lb! pl&im l¾e k*«($ks raktes to ¾ system for suspending a tarpaulin ¾ the pntpose of clos n a side of a l ading space. Such stt^ n i n sysems typieaily comprise a support beam provided with rails k whaeh wheels of cariages caa mU_* The tarpaulin is aspettd d imm t ese carriages.

Le¾-Jkg spaces enclosed by load containers, to .fseticalar artik had c i&i m situated os trucks, sad/or tmks, must comply with isfectemiaed mm sm oater dimensions. These outer dimension are often imp ^ by law. The loading space, which 1$ the space eilestiveiy available kshie the load coataiiier, is limited by th*se prescribed maximum dimensions, Sides of sack loading spaces are ot½« closed ff with a &r »«Kn whieh can be slid open in otxlet to thus p v de aeeess to the loading space vk &e respective side, i» order to obtain sn& imum oading space the tarpaulin is attached So aa outermost |«srip eral edge of the load eoatsitser.

The tarpauiitx is typically snspeaded directly r indirectl from carriages whic ess roll over tracks in rails present k a support beam. The carriages bear the tarpaulin nd are themselve supported by $j su ort bears. The ca ia es atkw s ng o en of the targaal by rollkg the carriages over the rails to one end of the support beam ia the longitudinal direction of the support beam_* When he tatpaala is opesed the wheels oll ver the tracks- k the rails, whereby the resistance to opening of the tarpaulin is mim iseil The known u e si n system for tarp¾tlins are preferably o timise here ia order to prevent the possibility of the carriages j&nnn g when the !&rpaulis is slid opm. Wheels could jam particularly when an operator attempts to slide the tarpaulin open too quickly or too roughly.

When a container with a elosk arpaul has to be loaded or unload d k a logistics ea^iroar e st the time pressure 1$ often very considerable, whereby these closing tarpaulins are substantially always opeaed quickly aad roughly. Another example i when a trucks provided wit a loading space with side wall closed by a tarpaulin, wholly or partially blocks a street k order to make a §ivery to or pick something «p from a shop_* tbr instance i a city cent e, and the tarpatdiu will also be substantially always opened quickly and rougldy.

W 2 70S 39$ describes a system for attaching a tarpaulin for the p a ose of elosiag a side, wherein the carnages arc tbrme wit a lu ality of sets of wheels which are oriented relative to each oilier aad relative to the support bmm of the system sueh that the tarpaulin can be opeaed aad closed is a reliable sp nner nd wit osithe systetn Jautttsing, Even situations where the tarpaai is opened o closed ojaic y and/or roughly the wheel will mom ia a correct a¾armer tekti to the support beams, EP 270S 395 also explicitly describes art emb dia^e¾t wher«ia the system fo closing a si e of a loading space is y ided with a lower support beam and %vh¾ m υφ &τ support beam, and wl¾ereia upriglit supporting beams extead horweet) the lower arid, the 8 ?per stipport beam and are co&aeeted Hh xt via e¾>eetb'eiy lower carriages md p^st carriages. The tarpaulin i eotmeote fa to the upright stmportiag b . As advantage of sueh a eoprlguratiou. is that h¾ tarpaulm is guided by carriages at the to of the side as ell as at the bottom &ίύ& side md is also eosrieoted ίό the loadiag space via these aamages.

A imber ad an ag relates to the securmg of caatfc*.1» tise closed state the upright su port lag beams form together wis th lower aad the upper support beams a framework which cm absorb Mgh lateral forces without: t¾© tafpatdm .«v«e hemg lo ded sueh tb& a eargo caa be held to the loadiag space. The upright sapp r ag hesras eau haiher fuactioo as eosneetioa posts to whieh goods ear* be eoaaeeted is the loadmg s ace so that their p s oa is fixed.

It is m&ed m this coutext that systems exist whersm the mrpaalia is connected o ly via m tsffer sap ort beam aud hswta m wnd e of the tar aoito is eom¾eeied via t ching taea&s, sueh as uekles,, to a lower u ort beam when the side wall is closed. In order to opeo a tarpauli« with the latter confi rati n the hackle* are first usiastessd such tba the bottom part of the tatpaaiia is no kmge eimuect d to the losdiag space,, i r which the ta^au iu eaa thea be slid open,

ϊ¾& present vesitioa relates articaiariy to a system ibr attaching a tarpan! fo me purpose of elosisg a side of a leading space with as upper support beam att l w support beaas_s herem pright sa portiag beams extend betweea me lower md the apper support beams aad are connected via e ecti e carriages to im support heams^ aad whereto the t^allu is o etskie to the upright supporting beams,

it is m object of the iavetttktts to improve the operation of the system for suspesdlttg a tar aalm tor the purpo e of closing a side of a loading space.

The invention provides for this purpose a system for attackin a iarpaalte for the purpose of closing a side of a loading space, which system comprises an upper support beam aad a lower support bea situated at the height of lespectively an apper side and a lowe side of the toadtag space, which system further com ises a plurality of upright support mg beams which each comprise aa apper carriage compat ible w¾¾ the upper support: beam ami a kwe carriage compatible wtt&tfee lower support beam sueh. that the ap ight supporting beams are eonseeted via the eat iages to toe mp$ett b rid at¾ movable m the loogkudmal direction teMm> to the support boatas, which platality of uprigh sapportiag beams w& p ovided tor tke ptrrpose of coaaectirjg to the tarpaul a so t t the tarpaulin eas be opesed aad closed by moviug tise upright so poriiag heatns, cbaraeterfeed is that toe syst m iurther copipriscs ioldiag plates whie arc preterahiy aaafaetured irora plastic aad each eotuprise a s¾hstaatsally ceatrai pivot ¾oae aad two peripheral pivot ¾©aes_» w ^e a the feM g laten utaslly «om$eet adjaeettt updfht s«ppi rtmg »e¾ais kt a matraer sueh that at least urn of the peripheral pivot t of eac fbidiag plate extemis agaiast a¾ outer side of a tt^peetive sa > odiag beats and at a disutaee frota the edge of this otaer side. I s the sysletn for attaching a tarpaulin according to the invention folding plates are rovided between adjacent upright sa ixjri beams. The folding pktes are mounted .here against the f gh sa postasg h m such that the foldin plates m told is only ose dsreetimt This m the direct txHise¾ae»ce ofposstetfeg a peripheral pivot z ts ag inst a» outer side of the upright su p r ing beam and at. * distance f m. the edge* thereof- The i t and a portion of the folding piste located at the pivot ssone, is .hereby mounted agains the oyter side of the upright s ppcatia beam. This has the result that the foldmg plate c nn t told IR the direction of di interior of the loading space b&e&use at least one peripheral hinge Is blocked in this folding dir ction because it. lies against the outer side o the upright support wait ¾e t ldisg plate will as a result h ve to fold is a direction away i m die l adin spac so that dorf ng op*ning of the system all folding plates will casslsteatly fold sway from the loading space. When, a ta paui is attached to the upright supporiisg beams, this tarpaulin will tteefoit be folded eotjsistes y by the folding plates to a concertina form oriented outwardly of the loading spaee. ^'i tis p eversts the tarpaulin folding inward when being slid of»e& & is noted here that the tarpaitiln is fiatfeer aot pmvide with, mxiimsy m ® or mechanisms for bringing about outward folding of the tarpaulin. T h is ecause the folding plates, & m particular the mounting of t¾s folding plates srelatlve to th upright su or ing beams according to the in ntio , have the direct c nse uence that the tar uliu is ferced to fold outward c nsistentl and correctly in concertina form even without auxiliary mesas o additional mechanisms.

The system for attaching a tarpaulin for elosisg a side of a tarpaulin for the purpose of closing a side of a loading space according to the invention has two surprising advantages. A first surprising advantage relates to construction of the system. During msstruciion of a loading space, I» particular a side of a loading s ace, the tarpaulin w ill typically be mounted as last, or one of the last elements. Because folding plates are provided betwee upright supporting beams* the upright supporting beams are already mounted relati ve to each other with a pt¾deteu»i«ed iat«rmedlat spacing before the tarpaulin is monnted. in the system according to the mvention the tarpaulin no longer ibrms the oal conn ction between adjacent upright supporting beams. This allows the system according to the i eution to be preeoufsguted, manipulated and tested without mounting t¾e tarpaulin. T¾is is found in pnsctice to be a surprising advantage of the invention.

A second surprising advantage results whm a loading space is used which is provided with a system for closing a side of a loading space as^ording to the mventkm, particularly in situation In which the side wall is closed and wherein the loading space is loaded or unloaded in direction substantially parallel to the closed side wait In such situations collisions with the ttpright supporting beam eas occur, wherein die direction of the collision extends is large pari: m the direction of the side wait Such a collision is caused for insianee when a pallet is driven into a loading space iu a direction substantially parallel to the side watt and wherein the pallet or for ift track mm®$ too close t fee s de wall and makes contact with, a suppor ing bearm ba upright m_$p®nitig be ms are provided so as to move in tfes loBgirtaimal direction wek that th upright supporting hearas do s t absorb & force_* or hardl so_* and tend rath r to also ds lace i& a situation where the tarpaulin

beams to each ether, fee fed force of the collision will have to be absorbed by the tarpaulin, lit pme iee there will be regular tearing of the tarpaulin as a mal of such collisi n to the sys em according to the fcmasl os not oaly will the tarpaulin connect adjacent upright supporting beams, bat plastic folding plates will also e&tend between these s«ppommg feesms. Tests have surprisingly revealed ha the plastic folding plate can absorb a part of the energy of the collision such feat the a p «l½ has considerably km of a tendency to tear. The folding plates are manufactured tea. p!astki, hieh is apt nly mexpeasive bat which also has good sheek~ahsorblng properties. More specifically, th elasticity and hardness of plastic folding plates is found to be optimal in ^ hia energy from a collision as desenbed above nd in thereby redaelag the forces as the dtrpauila resulting from the colhsioa. The above advantages demonstrate thai a system for closing a side o a loading space according to the isve ioa is simple to construct and has an mpro ed operation.

The folding plates preferably extead between the upright supporting beams at the location of lowe w of the saptasrimg beams,, and the folding plates are elongate, whet dn the peripheral p o ssone is located at opposite kmgiiadiaal eads. When the folding plates extend between the supporting beams in a lower xone thereof, the folding plates will farther be able to fac ion s impact strip, wfeei tn goods can strike against the folding plates daring loading and unloading ithout direst coeiact being made with the tarpaukn. Tests h t¾rther shown that the above described effect of abs lving collisions Is implemented to greatest: aad optimal exteat when the folding p es located la a lower zone. Tests have denwnstrated namely that the greatest absorption of collisions is usually la this lower zo e. The folding plates ate p*«£era !y eloapte here and extend with their leagfe direction is the direction of the upper and lower support beams. The peripheral pivot m are then formed at opposite lom*if»dinai ends an le against the outer side of the upright su rt wall.

The lower z ne is preferably located above a loading floor of the loading space and a a maximum height relative to the losdisg floor of 0.5 as, preferably 0.3 m, ref rably 0,2 m< Tests haw shown that when the ieldmg plates are placed above the loading: floor and at a maximum height of 0,5 , preferably 0>3 m_:, trtore preferably 02 ni, the folding plates will gukfe fee tarpaulin optimally into concertina form and will be able to function optimally as elements for absor ng shocks resulting from collisions.

The ibkling plates ate preferably mounted between adjacent npright supporting beams so that each er pheral pivot ¾eae exteads against art eater side of a respective supporting beam and at a distance from the edge of fee outer side. Each peripheral hinge of each folding plate is blocked hers agaisst ptvotiag to as mterlor of the loading s aes. A reliable operati a of the folding plates can hereby be gaasaatse , wherein the folding plates move oat std relative to the loadin space md thus guide the tx v&n. This m vement is psraafced witho t he Mag lates aavmg to s port atemg their MI length with t&Btr ianer side agamst & s rt beast,

The upright s ^o ing beams are preferably of ^xokfal crrKss-see i n sach that tie outer side of the sa fK?rimg beam is wider than ie isasr side of the su ponlag beam. Because of the tmp js idai eros8*seetiksa of the upright supporting heasa there is m£f & space on the outer side of the supporting beam to meuat wo pe iplersi pivot em of t foldlag plates, ach exteadlsg i a different dksciloa. The tmpezoidai shape will further have the result that, hen as object collides wit th upright suppottlag torn ia a < ¼ed ¾ sul^t t l ai¾lM to the side wall as described above, the object will sl de off the trapezoid l shape ia the direction, of the laterior of the ioadlag space. The tispsasidal upright supfxmm bea^s m tmMm m with the folding plates attached agaias the supportisg be x® will hereby iunctioa as uard rail for goods whieh are moved along m&'ot agaiast the stde wdl_* is order to fcsep these goods the leadin space. The Impact of the eof iisioa Is ftu he miaaafe«d ia that objects are guided by the commutation of Mdisg plate and trapezoidal upright mppmiing b n to the laterior of the loading space.

Bach folding plate is preferably formed so that a stiff plate part e eads la each ease between the central pivot worn and eseh of the two peripheral pivot wesrn_* B cause the sti f plate parts are provided between central diag parts aad peripheral pivot parts, the plates are optiaihsed for pshhig a tat aalia it a eooeetttna shape. T¾e s iff plate parts prevent the foldin plate, arid thereb also the ta paulin being olded at locations and ia detections whieh ate ot optimal.

Each folding plate preferably has a straightened j^itlo , aad the stiff plate part has a ihiekeaed portion which, is¾ the straightened pcssitiop. of the foldi&g plate, Is oriented la the dlteetloa of the interior of the loading space. The thickened portion raore preferably rests agaiast the edge of the upright s«pportlag beam, By ha viog the thiekeaed portlaa extend toward an laterior of the !oadiag space the impact sarl&ee o f me fa in plate, ie. the surface w ith whieh goods located ia the loading spaee firs collide, is offse iaward sach that the function of the folding plate as guard rail for goods is luriher optimised, Wh this thickened portion rests agaiast the edge of the upright support watt the loactioa of guard rail can be further optimised ia that as object which scrapes agaiast a folding plate can guided to a upright support isg beam where the object can be pushed further ia the direetioa of the laterior of the loadog space, I¾l$ latter Is brought about partiealarly by the trapezoidal upright support: wall.

At least two foldlag plates are preferably moan d hetweea adjacent upright supporting b , wherein a !rsi foldai pla e is positioned in the to¾ mm aad whet^at a seeoad folding plate oaltloaed ia the upper half of the upright supportiag besms. The folding of the tarpaulin Is better coatrolied by providiag two folding plates la upright supporting beajas, anag construction of saeh a sfcte wall the s stem wll ftstimd have a higher stahlh^'ty, particularly when he larpaalin is ml yet attached t© the upright a ^isg beams.

The upper support beam is eferably provided with aa upper rail w^'hkh ettteads ia ie»g£iad¾S8l ditectloa attd whercla t&e sppot carrages o the aptlgi sajpportlag m are p vid d, so as to be golded fa the losgitadmal direction by the u per ml, sad wher«ia the lower weqfljteft bears is provided with a lower rail hich extesds la feo tadiual dtreoikat aad aet¾avthe lower carriages of the u ight suprKMtusg beams are provided so as to e oded is the k>agitudisal direetiou by the lower rait The carriages aad the fails are ^iersb!y ?{istrce4 here as deseribed is Ef 270S 3$S. BP 2 ^'70S 395 is preeabi fae pt tsd herein by way of refereaee for the description of the tail aad the am es .

The upright sis riag beams .sse eierably provided with abachiag mess which are cm ible with the ibldiag plates so thai the ibldiag tes cart be eosseeied to the s igM supportlag beams. The attaching saeaas here &fm y cotaprise a slo aad the tbldiag plates ^erbly a s≠ a thickened pm rn oa either side, tMs such that the ibldiag pistes am engage with their thickeaed ottim. is the slot by aseaas of a mm ki tfee lotigaatiutal dim^tioa of the upright supporting beams. hen the fokfiag plates are ee aeeted via attaching means, preieraby a ski and a lekesed ρο^ί &, to the upright $ap$x>rtiugmm, asseatMy aad maia$eaa»ee or repar of the system is simple. It is note here that, when other mesas are emnected to the t&rpaa!ia ia orde to fold the tarpaalla ia the eorree direction, these meass are typie&liy very difficult repkee, ia the preferred conSgur&t K of the mmtkm the Ibklat plates eaa he replaced wlthoa the tarpaalla having to be detached md wit t upright supostiug beams havia to be disassembled.

The veatkm further relates to a trailer of a track rovdd with a system according to the ipvestioa. The luvmiksa further relates to a wagon for a trsia wherein at least one side wail is provided with s iers aeeoaiiag to the iaveaboa.

The mvestioa will sow be further described oa the basis of an exemplary embodimeai; shown la the dewin ,

la the drawing::

figure I shows a ttailer ihr a track_* a side wall of which is provide with a system aeeerdlag to aa emhodimeat of the iavestk?a;

figure 2 shows a er ss-secltoa of aa upright ssppottmg beasts with ibldiag laes ia straighierjed state;

flpre .3 shows erss-seetioa of aa apight sapp rtlag beam with ibldiag plate hi folded state; attd

figure 4 sbmvs aa accessory with roldiag kte.

The sarae or similar eleraeats are deslgaated is the drawing with the s&tae refsa^{^}eace aai&erals,

A fol hsg piste is defiaed la the con xt of this -descripl km as m eloagate plate with a plurality of fold aad«r pivot e s» t at the plate, as seea in its ea rrei , Is deiprmable b beiag folded aador i^e between, a fet straightened position asd asecomt folded positi n The ord " feld ig *» fokli&g plale is sot intended to lasit ifee scope of the word bat .asfisrs o»ly to a preferre enihodtmeat of the mveatioa. Pivot m defiaeti as a which allows rotation of two st¾S«r parts relative to each ether. A pivot can e forteed la. drfi½e»t ways, for instance by

«ei«¾ectmgt«m rts v¾ « shrt Tbe preferred erai^tmeat in fite foeaiieo is a fold ¾oa¾ wfe®(*t8 a plate part, which is thea related, to as the told soe, allows rotation, of tw stiffer parts relati ve to each oiser tbreygh. deteaat t o. "t¾e advantage o a plying a fold ¾one as pivot ¾ess» is tha this allows th foding plate to e asaaafactered as singe piece- lie ½ws*t_0» elates to a ssem for suspending a tarpaaiar for t¾e purpose of cl sing a side of a loading spaee, Loadiag space I is _d¾aat>ly defiaed tem by a load ^taiaaf 2, is particular a a*obile load container.. The mobile ksad container shown is i sre 1 as a trailer of a ttscfc, Saeh mobile loa cottlaiaers 2 are typically used t© feaaspart goods, ¾ w ill he a ren that the ¾vmlii¾a ..is s t oaly applicable to traika of trucks, hut also to railway wagons, trneks witn fixedly instructe load 0D»tataer ami farther m ile load cofttaiaers with loadin spaces i r traas ortisg goods.

Such load ecmcasaeis typically h v¾ dimeastoas which are limited by law, 1» Belgtoas for instance m outer & am with a maximum width of 2.55 thus impose ffae a m*

refrigerated Meatalaer of a task These imp sed mnaxaa outer diaieasioss affect the auixra&an loading space a the load w&temec. hi order to maximize this loadlag spac the wall of the ksad!ag space is prelerahly formed en m outermost peripheral edge of the load container. Beaiiag support eleaieats with which, the load container is constructed and whic have a cress* section larger and thicker than the wall of the loading spaee are therefore preferably loeated inside ths wall so that m pari, or only a small part, of these eletuents protrudes outside the wall, The oue dimns ns are fa this way defined substantially by the wall of the loa ing apace, ihis masl the t avaiiahfe ia tlie !oadi«g $paee>

The wall is preferably formed by a taspauJIa 3. A tarpa im 3 typicall lias a small thiekaess and will therefore be saitahle as wall of a load eoaaitter 2 for closin a loadiag s ee t since it takes u little !oadkg space L A tatpeulia 3 fertiuar has the advantage that it Is exI e ^d, mvt ed It is attached via a saltable suspeasion systea?, caa be ashed away to oae side, as iliastrsited ia f gere 1₅ whetela tarpaulin 3 has been poshed partiahy to a leil-haod side of theipsir,

Figaro I shows a trailer wherein tarpaufia 3 is snspeaded via a suspeasioa systeat with carriages aad s«port bem, herem tbe mxpp ems are located on the underside as welt as oa the upper side. Figure 1 shows on the left-hand side of the trailer the suspension system without tarpaulin, first with straightened folding plates, then with folded folding plates, and in addition the figure shows a part of the suspension system with tarpaulin 3. In figure 1 the upper support beam is designated with reference numeral 5 and the lower support beam is designated with reference numeral 4. Upright supporting beams 6 extend between the lower and upper support beams 4, 5. These upright supporting beams 6 comprise on their underside respective lower carriages 7 which are compatible with lower support beam 4. On the upper side the upright supporting beams 6 comprise upper carriages 8 which are compatible with the upper support beam. The tarpaulin is then connected to upright supporting beams 6 such that the side wall of the loading space can be closed off with the tarpaulin.

Making use of an upper support beam 5 and a lower support beam 4 has the advantage that the tarpaulin is held fixedly both at the top and bottom both in the closed position and the open position as well as during opening and closing, and so cannot move away from the loading space. This is particularly important in the ease of trucks which are used in urban areas for loading and unloading goods. If such a truck were to have only an upper support beam, and the tarpaulin hangs downward from this upper support beam without being held fixedly at the bottom, the tarpaulin could move away from the loading space at the bottom and thereby damage surrounding objects such as cars and buildings, or injure people. This is prevented in the system of the invention by attaching the tarpaulin not only to an upper support beam 5, but also to a lower support beam 4. The system according to the invention is further found to be considerably less labour-intensive during opening and closing than similar systems without lower support beam.

Lower support beam 4 is provided with rails and lower carriages 7 are provided with wheels which are compatible with these rails such that lower carriages 7 can travel in the rails in a longitudinal direction 9 of support beam 4. Upper support beam 5 likewise comprises rails and upper carriages 8 comprise wheels which are compatible with these rails such that upper carriages 8 can also travel in the rails in a longitudinal direction 9 of upper support beam 5. Because upright supporting beams 6 extend between lower carriages 7 and upper carriages 8, upright supporting beams 6 can move in the longitudinal direction 9, this usually being substantially perpendicularly of the longitudinal direction of supporting beams 6. By moving upright supporting beams 6 in the direction of one end of the side wall of loading space I the tarpaulin 3 can be slid open in order to provide access to loading space 1. As the skilled person will appreciate, tarpaulin 3 can also be closed in the same manner.

Further elements, such as a door 10, can extend between upper support beam 5 and lower support beam 4. in the context of the system for attaching a tarpaulin 3 for closing the side of a loading space 1 a door 10 is defined as an upright supporting beam 6 which, in addition to holding the tarpaulin, has an additional functionality. Door 10 of figure 1 has the further function of aebJag the tarpaulin m a side to a up sght edge of loading space L Sack & door described is B:E 2012/ 19 which, is m«orpomte<i h«r ½ for the 4s$cdj*das of oo 10. A similar door 10 fcsn h provided m the mi dle of the s de wall In order to impst extra sttrrdiness to t e sys em.

Fold ng plates 11 _> 12 a

At least one_* sad preferabl two folding plates a te nttmntsd between each, of the adjacent upright supjmrtmg beams 6. A first fokimg plate 11 i s reletahly ruonnted here la a lower w of n right $¾ppot lag b am hile a seeoad foldlag plate 12 is ^fembiy ro ided Its m upper half of the ¾ ifbt supporting beam, more preferably be ee a half and three quarters of the height of upright st »fthigbeant &

X» flgute 1 the foidmg plates in She k> «r ssone ar designated with reference uimteral 11 and the folding plates in, tise upper zone are desi na ed with t$$em stum rs! 12, wherein rise foldin plates which ate m She straightesed state are u^ieaSed witltent f rdser des gnsisoa and whe ein the dmg plates wmeh are in the folded state comprise m accent slie the ret½esee n net&l A bldla plate 11» 12 is shows, eosisistestly I» the figu between eac h of the adjacent upright supportmg beams & Sys&est can however also be constructed in practice liereiu folding plates intentitmally do no exte¾d between p e rmined upig t su rting beams. A door 1 could ibr iastaoce be positioned for fnnctsoual reasons close to a first a righi suptjortisg heatn 6, wherein door 10 Is connected only via tarpanll 3 to the first npright supporting beam b. A dkg plate xmM then sot extern! between door 10 md tlrst upright supporting beam 6, and wherein thelrst upright suppoiilug beam t> will Ham be connected via fcddlng plates to a furthe supporting beast 6, The invention Is tberefbre no limited to a system in whicb all npright supporting beams 6 are w esfa to each other by means of folding plates. According to She invention the majority of adjacent npright sttpportmg besms 6 are efe ably eom¾ecte to each other by e s of folding plates 11 , 12, The ts tuuer of combi g She folding plate to tbe upright supportlag beam ill be farther elucidated with reierence to figures 2 , 3 an 4.

Figure 2 shows a eross-sectioa of two jaee i npright supporting beams 6 between which a folding plate 1 1 ejcteuds. Folding plate 11 of figure 2 is shown m the straightened state. This is the state wMea i tdmg plate 11 takes when the side wall is closed. R fe nce numeral 13 indicates the outer side of the loading space and ret¾renee numeral 14 indicates the interior of the loading space. Upright supporting beams 6 have a substantiall trapezoidal cross-section and are pref e bly formed sytTtiuetrteaily, Upright supportmg beams * have an nter side which is considerably wider than the inner side, whe eby as seen in cross-seetion tbe side ails o supporting beams ό taper toward oae another in the direction of the interior of the loadin space, The effect hereof Is that, when an object collides with upright supportiag beam as tsdleated with arrow 23, bec use of the shape of upright aupporting beam 6 this object is pushed toward ike tntesw 14 of the im&s$ space- Opright snpportm beam « hereb fusetioas as gnard rail S r objects which threaten to move out of the loading space.

Folding plate 11 is elongate and typically manufactured from plastic, preferably by means of injection moulding. When they are mounted and the suspension system is in the closed state, the folding plates extend substantially parallel to lower support beam 4 and upper support beam 5.

Each folding plate 11 has a central pivot zone 15 and two peripheral pivot zones 16, wherein a stiff plate part 17 extends between each peripheral pivot zone 16 and central pivot zone 15. Folding plates 1 1 further have attaching means 18 at the location of peripheral pivot parts 16. According to a first embodiment, peripheral pivot parts 16 here allow folding plate 11 to pivot between attaching means 18 and the stiff plate parts 17. A pivot zone is then provided adjacently of the thickened portion to allow the folding plate to pivot between the stiff plate part 17 and the thickened portion. Attaching means 18 are preferably formed as thickened portions which are provided so as to engage in a slot 19. Slot 1 can be provided directly in upright supporting beams 6 such that folding plates 11 engage directly in the slot of upright supporting beams 6. Upright supporting beams 6 can alternatively be provided with a cavity in which an accessory 27 is mounted as described below with reference to figure 4, which accessory 27 then comprises the slots 19 for mounting folding plates 11. In an alternative embodiment of peripheral pivot parts 16 the thickened portion and slot fulfil both the pivoting function and the attaching function, wherein the folding plate is not folded but is connected hingedly to the upright support wall.

Each folding plate 11 extends between adjacent upright supporting beams 6. At the position of upright supporting beam 6 each folding plate 11 is connected thereto in a manner such that peripheral pivot zone 16 lies against the outer side of the upright supporting beam at a distance from the edge of this outer side. This distance is indicated in figure 2 with arrow a. This distance a creates an overlap between the outer side of upright supporting beam 6 and stiff plate part 17. It will be apparent here from the figures that the stiff plate part is not only the thickened portion, but that the plate can also have an increased stiffness adjacently of the thickened portion relative to the fold zones and/or hinges. This overlap a has the result that an inward oriented folding direction, indicated in figure 2 with arrow 25, is blocked. The direct consequence of the overlap a is that , when upright supporting beams 6 are moved toward each other in order to open the side wall, folding plate i 1 cannot do otherwise than fold toward the outer side 13. This guarantees correct operation of folding plate 11. An overlap a is necessary here at least at only one peripheral end of folding plate 1 L An overlap a is however preferably provided at both peripheral ends of folding plate 11.

As the skilled person will appreciate, pivot zones 15, 16 can be formed in different ways. The central pivot zone is preferably formed as a fold zone as shown in Figure 1 which is formed in Ω shape wherein folding plate 11 has a thickness at fold zone 15 which allows folding of the folding plate. The use of an Ω-shaped central fold zone has the further advantage that the Ω will fkuctloa a$ ήα$ w&en the folding plate is loaded .la the fongitadinal directlom Wtuss object 20 makes a coiMdmg movement 21 sad collides with upright siipptsrtisg beam Isd-katsd th arro 23, a force in ihe longitudinal direction will be absorbed ^'by folding plsie 11, The shape is particularly suitable for absorbing msk aa impact. A straigh piece- of pla material wi h a hickness allowing the plate to fold co«ld however also be provided as fold ¾st_e. The eh¾siieity of folding plate i 1 will here still be able, tkstgh less optimally, to absorb a fercc caused by a collision 21. FoMmg plate 11 has a tmekuess, width aad lerigd At the fol 20H. s 15_» 16 h&th the thieteess of the plate and tbe width of the pkts eaa e modi6ed so as to obtalo optimal dfug properties, in figure 2 the peripheral ivo mm are showa as sa &taatially linear fold tm which allow relatively tight folding of the plate,

Tbe stiff plate parts 1? are preferably formed at least gsrt ly fey a. thickening of the plate, This thieken portion is Irs additi n preferably oriented toward an in £¾or o f the loading space when the t¾kb«g plate is mounted, The t ckettmg of stiff plate parts 17 toward tbe inter r .1 has the re ult that, when as object 20 mabes a co idiftg movement 21, object 20 will, collide with plate 11 m the isiaer side of stiff plate p 1 ?_♦ as indicated with arrow 22. Because stiff lute p 17 is thickeoed toward e iastde, further movement of tbe object will have tbe result that tbe object collides with tbe t apezoidal upright supporting beam 6 as abdicated with arrow 23, whereby the combi ati n of foidisg plate 1 ! ami trapesoidal upright sa portiag bears functions as guard rail for objects 20. Forces remitti g from tbe coilisiori of bje t 20 with olding plate 11 and/or ¾sprig supporting beam eaa be absorbed considerably better bete than in existing suspertsiou systems for a iarpsulin 3.

Foidiag plates 11 are p efe l formed w th a eoatrastitig colour such tlsat a eesoa loading or unloading the loading space has m improved view of tbe side of tbe loading spaee> When s upright supporting beam Is situated m the s stem between two djacent upright sappoJ &tg beams, wo ioldlrsg plates ! are preferably connected to the ou er side of upright sapporting beam e. This is also iU strated in figure . The fhl lug plates are preferably mounted as closely as possible to each other is order to ximize the overlap a which de ine the dlstaa.ee betwee the peripheral pi vot i the edge of the outer side of uprigh support wall 6, Such a maximization allows pivot ¾oae lb to be jformed less tightly, or in other wor s to be made wider, thus educing tbe Impac of f ldbg m plastic fbldi g plate 1 .1. Lower folding plates 11 are preferably placed at the same height relative to lower support beam 4 such that a force In the loogttud!nai direetioR is transmitted balanced ma»aer irom tie me foldiag plate to tbe o ber. Tbe u per fbldmg plates are preferably also placed at tbe same height for the same reason.

Figure 3 sho s the same cross»aeetioa as figure 2, but wbereln folding plate 11 is In a folded state. By mo ¾ wpright sapportmg b∞ 6 as shown la Upre 2 toward each other in loogitudma! dh^cti s 9 Ihe iblding plate 11 will be Ibrced to fold as shewn i ore S. This is beca se dlsg in the folding ira&foR as indicated wit straw 23 m figure 2 is blocked by the o tte a, Siiirpkte parts 17 will therefore ihkl in an out ard d&ectkm, also indicated m ¾ar¾ 3 wftfc sw 24. Tajpauiio 3 (pot shows m iigures 2 and 3) typically has & considerabl greater i¾xibillty ami f eedom of mov ment relative to χφά ί supporting beams δ tfeaa folding plates ! I and 12. When the tarpaulin is connected to upright supporting beams 6 and folding plates i I and 12 are provided etwe n adjacent upright s&ppofciag beams $, fo ding pktos ! L 2 ill push the tarpaulin » an optimal eo«eertiri& ike stat . In this optimal coBCestte j-iike state each fold of the tarpaulin extending between iw adj&eeot upright s p rting beams o extend in the direction of the outer side 13 of the loading space so that no str oti at can occur in the interior of the loading s ce. Ibis guarantees a proper p rat n of the suspsmsios $$&*m for closing a side ^'wall of loading space by mesas of a tarpasdis. t i noted here that it is sot me yte conacet tarpahlin 3 t olding plates .1.1 _> 2.

Figure 4 shows m &rnm? 27 which is adapted for mounting i¾ slot of as upright supporting beam 6. The accessory comprises two slots 19 which arc provided on one side, in the figure the n per side, with, a further htcision snob that th folding plate can be pushed with thickened portion via the iscision into the slot The folding, plate cars preferably be rrjonnted in slot 19 by xmm of a mou ting movemeat 2$ la the feag&ydiaai h¾etio¾ of n right supporting beam &. This allows folding plates to be moustet! and detached whbout special tools and without the upright supporting beams havkig to be disassem led. A folding plate with a defect in a system as described above can simply be pushed ith its thickened portion 8 out of slot 19, after which a new folding plate can be ushed into slot 19. The skilled persoa will appreciate that iffered shapes and s ixes of thickene portions can be applied to cot eet a peripheral en of folding plate 11 to upt ght supporting wail 6.

The skilled person will appreciate <m the basis of the above description thai the invention c be embodied di Terent ways and on the basis of different principles. The invention is not limited to the above described embodimems> The above described embodiment md th* figures ajc purely illustrative and servo only to incre se anderstandmg of the wwextii . The invention will sot tberd ns be limited to the etn diments described herein, but i$ d fined is the cfe m

Claims

1.3

Claims t System for attachtag a tarpaulin lor the purpose of closiug a side of a loadhrg space_* whic $ysto. comprises u e support beam and a lo er wppact hsm situated at the heigh of 5 e^m etive an upper side md a o er s de of the loading space, which system further eoraprise a plurality of upright supporiag eams which each comprise an upper carriage oompatibfe with the upper support beat» aad a lower earriage eoiispatibie with dre lower support beats such that the vp&$fct p&tmg heams are coaneeted via the carriages to the support beams atid are movable is the long itsd al direesi s relative t the sup rt bea , which lurality of upright su o in 0 beams are pro vhied for the purp se of eouuec ta to the tatpauhu s that the tarpaulin eas be opened and closed b i vmg. sprigbi ssppori g beams, characterized m that the s tem further eossprises i i«¾»g plates which each comprise a subsh iiaily central pivot %om asd two peripheral pivo xose , wherein the disg plates mwtoally e sitect adjac nt trpright s ottin eams in a m x such that at least ose of die peripheral pivot zoaes of each ioMmg plate extendsS against m outer side of a respeetive s¾ po mg beam and at a distance tern the edg o f this outer side.

2 , System for attaching a tarpauiis as cl imed in date 1 , xvhereis the fo dmg plates are imnufectutcd fern piastre.

3. System tor attaching a tarpaulin as claimed is class 1 or 2, wherein d e folding plates0 extend between the upright su porting at the l cation of a lower mm of the wg b m_* d wherein tbe t ldisg plates are ekmgate, wherem fee peripheral pivot e are located

4. System &r attaching a tarpaulin as claime is class 3, wherein the lower sooe is located above lo dmg floor of the ioadisg space and at a a?dmum height relative to the loa ing floor of5 QJ s^etrs, preferably 0.3 ssetre, mote prefemhly 0,2 metre.

5. System for attaching a tarpaulin as claimed is my of the foregoisg eiaims_* wherei the i idmg pistes are mounted beiwees adjacent upright supporting m so that each peripheral pivo ¾oue extends against an outer side of a respective s ipporisg beam and at a distasee from the edge of this outer side.

D b\ System tor attaching a t»|*88im as claimed is ny of the foregoing claims, wherein the u right sspporthig beams are of rapesssidal cross-seeties such that dre outer side of the supportiag h m is vider tha m. xw side of the supporting heasL

7. System for attaching a tarpauim as claimed m asy of the ioregol&g claims,, wherei each folding plate is forrsed so that a stiff plate part: exten in each case be ees the centra! pivot mm5 and each of the two pettpbera! pivot ¾o nes ,

§. S ste for aiiachisg a tarpaulrs as elsimeil i» cMm 7, wherein each folding plate has a straightened position and a

U¾s stiff plate part has a tMckened portoa which, ia t e straigliieiied osiion of the foktmg plate, is oriented ta the dieeeiS a of the interior of 0» loading

9. System i r a ching a tar &ulm as claimed m claim wherei the tmcfcsRed porta* $ ests against the edge of t e upright s&pportisg beam,

10. System for attaching a tarpaulin as claimed in any of the fk $afa$ claims asd claim 3 or 4, whsrekt at least tw %Mto% pistes are io ttnted betwesstadjaeeai ¾pright su oting beams, whereia a first of the at l ast two foidsag plates is positioned in the lower Kone ami wherein a seeoad of the at least o tbldm plates is positioned in m upper half of the upright ^ i&sdi

It) beams,

I ί . System for attaching a tarpaulin as claimed in my of the foregoing elates, wherein the up er st ost beam is rovi e with an u p r rai which estesds In a le^gittidi&al diteetios, w rein, the upper carriages of the uri ht sapxstt«g beatns are provided s as t be i»ided m me lojigltttditml directios fey the npper rail, d wherein the lower su p rt tern is ovided with a 1 S lower ail wlac extends la lon itu n l direetiou, %vherei« the lower carnages of the eprig&t su orting beams are provided so as to he guided in the i ^tu t&t direction by the lower rai.

12, System for attaching a tarpanlk as claimed in am/ of the toregoiog c t s, whetoin. the upright supporting te» ae provided with attaching me $ whlefe are compatible wl the folding plates so thai the folding plates c be connect d to die upright stmpordag beams,

0 13. System tor attaching a tarpa lm as classed la claim 11 , wherein the attac ug mean comprise a slot and ereio the fbldiftg pistes com ise a toicketed portlsa «a either side, this such that the foldiag plates can engage with their t etceaed portio m the slot by meaas of a mowment itt the k>ngit«diaa1 direetios of the upright supporing b ams,

14< Trailer for a truck* at least one side wall of which is rovided with a system s claimed 5 to an of the foregoing cl im

15» Wagon for a train* at least one side wall of whch is provided with a system as claimed in my of the claims 1-12.