HUE029714T2 - Plastic pallet with stiffening element - Google Patents

Description

FLMTîCPAÏiLET WITH STIFFENING ELEMENT

Field ef íifo iôwnîifoi

The invention mlateS: to a plastic pallet Slash a fället comprises a deck fur storage of objects to be transported, m paitttmlsr of goods, iá addition it comprises feet which ate formed projeclitig ftom a» underside 4$. the deck as well as runners which: are formed hi each case comieeting at least two fisét: Ha each other at their ttmfersidcs.

Stete öf Ute art

Plastic pallets are eseti predominantly for die transport of goods within a plsM pr between drfferent plants its well as for the display of goods iia sales spaces. They can be produced, for example, in iajectiort-moulding processes from polymers, recycled plastics or ntbtlnres thereof, wherein the «se of additives such as reinforcixig fibres is also possible. The deck can comprise a euatitmons, substantially closed loading surface; however, the loading surface can also be formed by a grid or ribbed stmeiore. The Deer is advantageous in particularm the tomspott or la the storage of goods to be cooled m :foe goods- to be transported na» then also be cooled from below,

On tile underside: Of the dechj i,effacing the 800¾ feet m(4 Tarosod projecting downwards. They servo, above alb to facilitate transport with vehicles, such: as for oaample fetik-iiii tracks, the forks of which can then poll into fog interspaces between: die feet, M the same wm, foe feet must also be capable of bearing foe weight of the pallet With the goods Stored on it without this resulting in material fatigue. A ircxpently encountered conilgufot ion proy ides eine: feet on foe underside of the deck, fe each ease font feet are placed at die coiners and a furfoer four feet are placed In foe centres of each of the edges. The ninth foot is usually arranged beneath the geometric centre of gravity of the deck or of foe loading surface. Depending on the sine of -the pallet, more or fewer feet can also M used. In the ease Ofhâifpsîîéis with foe difoehskins of 800 mm x 600 rum in: length and breadth, even six feet can be suliiéinál for example if these are of an appropriate size. The feet can be formed In emu piedc on the underside of she deck and pfodneed together in an iajeetion-aiouiding process; however, they pan also bo tnanafaetured separately and then, for example, screwed to the deck. In foe latter case, she material for the feet can be determined separately, for example a materia! can he chosen with, a higher impact msistärtoe than that of the material winch is used for the deck. fe the ease ofimplant hanspotr, foresmrgie in wafoltousos, very often roller and chain conveyers are also used in addition to industrial trunks such as fork-lift tracks or pallet trucks. In order to allow stable transport on the iatter transport means, plastic pallets designed for this purpose also comprise miniers w#ek are formed in each case connecting foe undersides of at least two feet to each ofoesr. In the case of a pallet or hälfe pallet with nine feet, three runners can be used for example! eáeh of wtrtoh runners connects three feet to each other. In fois ease thé nirfoers arc arranged pUfoUei to each ofoer; their fongifodihsi direction usually lies parallel to the narrower edge of the pallet but this is not absolutely prescribed, h is also possible to use perhseiric runners and runners which also omuieet foe feet to each other aiong foe longer edge of foe pallet with the result that, for example, six runners are used on the undersides; of She fees, like (he feet, the runners can be mMudWtufed |n one piece with the pallet; however, they cart also he pfpslueed; separately and then, tor exatupie, he seféwéd to the feet of the pallet, or glued or clipped onto the feet, |h order to obtain the greatest possible stability during transport of the loaded plastic pallets, when placed on foller conveyors; the pallets áré aligned stich that the rnnrters are oriented along the dksetinh of transport; in the case of chain conveyors on the other hand, the remuera are usually aligned ipäftsuef^ aspect to the direction supported with the ninnem on the chains.

When roller or chain; coavsyprs are used the rtmuers are therefore also exposed to a higher degree of wear,; Precisely in the ease of chain eonveyots the - as a mi«*wn - chains rest against the runners in the centre héiween twö ieet, Te, -wh«e thé greatest deHecttoh of the fttfttters is also to he expected m the ease of loaded pallets. This leads to rapid material Tatigne, fh thé ease éh roller conveyors, a larger distance between the individnai: rollers cart also lead to a rabiéi'· Ijä&da-Wpaafof loading· oísdw loot edges laelhg towardtr ihe iront ut the direction of transport sinee, because of thé defieetiorv, these «ο: longer lie at the level; of the transport plane foi nwsi h> the upper edges of the rollers, hut lie fcéiöw it with the result that thefbot edge humps aga>nst the next rollet dómig the forward movement.

Further materied loading arises when the pallets are stopped on the roller tw chain emtveyof ia transit or at thef ëtid of transitbefore they ate transported further or transported off by other transport stsass, whemitt, however the rollers or chains of the respective con^ytxpPns^i^fê'iôttxKate. Äs a mie, rölfgra and chins are műdé Írom steel and are thus harder than the plastic pallets or their fanners which are also tpanutaettifed from plastic. This leads. & particular in the case of chain conveyors, to inefeasétí material ahraston Which sigaiticanUy shortens the life of the runners. Tffhe pallets are hé, léét and runners are injected directly onto the deck, the hi& of the pallet Is thereby sigpifscatttly reduced since those plastics or plastic mixtures are usually used tor die production of one-piece plastic pallets With which a high impact resistance of the pallet can he set Such ptet}&8;ltave.®.J»te%w:i8bÄtl!BS!dfbfe8dei^ and are therefore to he classed as sod, which résulta ih;a stronger deflection of the mmisrti. If the rtemexs are worn out, the whole pallet has to be replaced.

However, as a rule ii is snore expensive to replace a whdle päilht: íhátf to replace only a pártfoereof ht order to minimize wear, n is proposed ut the state of the art f^agagtae^giitr:fo minutaire -Ötéimmer»-separately from a harder material. Such a pallet is described ín DE 50 208S DdB 2TTM, Here, the 'runners are connected to the paildf body detschÄy and etm be lelgehed from. the pallet body without a great use of feree as soon as a vertical three acts on the runners from above by means of pressure on the pallet. The runners can therefore be exchanged relatively easily, and they are áísé xnanndtotnred from a more âéxuralîy resistant jnaterM Shan the pallet body, for example from polypropylene with glass fibre content, However* r»âptëèdiw!t|t manufacture, the production of a paliéi with separate runners ts atotg expensive since several moulds must he provided with, she result that tiro production is associated with higher costs. In addition,: different material iniXltires must in' provided. of the miners is to provide rnetal reinforcements iu tits runners, This is, for example, the case in the applicant’s model CPP 726-M, wheresn there the metal remforeements serve in particular to increase the load capacity. The pallet is tnaxmihctnrcd in several parts; cite metal reibfomemems arc screwed to iSie t^tistlers and am not visible írom she outside. Changing the speed rPmforeëment is very laborious in the ease of this pallet, likewise the recycling, for which the metal reinforcement must be separated from the rest of the pallet, ht addition, although the metal reinforcement increases the rigidity of the runner, it dees not prevent the wear described above dóriiig transport on relier or chart? conveyors. A pallet with stability and loadihe&riog cépíibily :isi desetibéd lh WO 2007/019833

Af> There, the pallet ts manufactured from plastic and comprises on the underside individual feet, foot rails shade of sheet steel which connect feet arranged in KtxK8:i#;litäfeneä^:$^:^f:^fhm?i|pondmgiy arranged grooves. In cross section the too? rails have a u-shaped proliié on which spring demend are formed for a® positive connection to the pallet in the grooves, irt the inserted state they Finish flush with the underside of the feet.

Besmdpffen «f the ínvesdíon

The object of the invention is therefore ίο further dpvpfopá: plastic paliéi of the type described at the be|i«nmg to the effect that the deflection of the runners andllfoweître® them ixmi&imized.

This object is achieved m the case of a plastic pallet of the type described at the beginning in that at least otie giom e-shaped recess running in the longitudinal, direction of fee runner is formed on fee underside of at least one of the runners, wherein a siiffening element made of a materM with a Ihgjter modulus of elasticity than shat ot the material from, which th®:j^era-:;ap: moulded is fesebM Mo »· Hasf one· t««» The sti ffening eictnert; is fixed in die recess via fixing means.

Tire stlfífeaíag ëîemestt carts for example, he moulded bar-shaped with a polygonal cross seefid® and fill a? least a jsart Of dip gröpve in the lotigiiudiMi direction of the mmter, Mowever, for reasons of symmetry and stability it la adyatitagsous to fill the groove completely in an area which is located pmferabiy between the outer edges of two: comer feet of the pallet lying opposite each other, i.e. along the w-hole runner. The groove can ho open fioro end to end and at the ends, but it can als©îl»:t^k^fcÂ6:kng|#iîf«^ÎÆ«bëÔô» with the result shat the siiííening element is held in fes.itap«*:%'a:':^dtíyd*tetói^is*wsner in the fettgthtdimi direction of the groove. If Site rutmer extends over an area of more than two feet, for example over three feet, in principle severe! stiffening eiptnenbs can also be arrattgpd cöfisepnlively m the same or tu diffetent grooves, wherein each stiffening feienteht covers breach case im area beiwpea twofoef 'Whß& a mtáterlal with an appropriately high mmlufos of elasticity is used, the matetial use can he mbmÊSlíâ^L·É^^Ίtë^t. ifgr example, flatter ribbondfe PtifPbisg elctnpnlsimn also be used. The atTangempui of several sfllimmg clem parsllpl to each .»tluat on a unmet is also a possible vadabb likewise fee forinifeon of a groove taking ; up the whole width of the runner, in order to keep the wear and fear tmifbrmly low, such stíffottmg plemenfxare preferably loosed in each of foe: rutmerib and in the ease of spvpral runners whieh ore at fight angles to each other itt at least those runuefs which are parallel in hoc iliteetion; if necessary, however,idloeffee runners nan be provided with siiflening plemsmss wife the :resuli that in this case the orientatum of the pallet on roller or Pham conveyors is so longer irnporomt.

The fixing means for foxing the stiffening element in the repess can, for example,^comprise screws with which the·siiflening element is screwed: title the groove, with the result that it cannot fall out: ffom:underneath. The mechanical stress ta» these screw connections is, however, quite high because: as a rule a : slight deflection is case of loading despite the stiftaing, In a preferred embodiment, She fixing means in addition or altepóadvéiv tiie^iot« comprise at least one fug, which partially covers the at least one recess and fisses the stiffening element in the meess m a postfiyeToeking manner. Sachs lug can be taped parallel to the haseM standing surface of the runner, for example, in the form of an arc of a circle on the edge of the recess; it projeeis partially over the recess and prevents the stiffening element from falling out. it is advitixtageous for smaller logs to he districted mote or less anitamiy along both edges of the groove, also offset, with the result that as good as possibles hold is ensured.

The lugs can: be provided wish a certain elasticity winch makes it poSSthl« :10 lefödve the stifienmg: element for example by hand with the aid of a screwdriver by overcoming thé iota exerted by the hip because of the leverage of the screwdriver being applied to the edge of the groove. C^îÉf#ed with a screw connection, this makes it possible to changé: such a stiffening element more :piétí[y:, Should this he necessary, and in addition the mechanical stresses in the case of a deflection are tower than in the ease of a screw connection. la principle, with the bar-shaped or ribbou-like stiffening element --- wherein, in fitst ease of a ribbon-like design, the thickness of the ribbon is several millimetres as a rule - the deflection caii thready be minimized or even almost prevented with coreespondingiy thick Stiifeniag elements, if however, the stiffening elements are those made of metal, for example, the map of the whole pallet is thereby possibly increased by a not Inconsiderable amount if the stiffening demOÉs pú top thiék· C*n tb® other hand* stiffening efetnents which are too thin may possibly not: sufficiently prevent a d&fieetieu and thus more rapid wear.

In order to better distribute the forces acting on the runners or stiflemag elements of the pártapallet in particular when using rollers or cirais conveyors and in order further to minimize the deflection at least one stabilizing dement projecting feat the stifiemni tarnen! is therefore arranged on the sfifisniug éléisesi, which stabilising element is formed engaging is a corresponding holder which is formed by as opening on one of the feel In this way, the forces arising during transport on roller or chain conveyors which lead to deflection are also conducted in to the at least One stabilizing dement which, for its part, transmits them to the tat because the holder tamed in the foots Ser its part. Is bordered at least partially by walls or grid or ribbed structures eorfespondlßiiy serving as walls, which limits a displacement of the stabilizing element out of its resting position, i p- out of the position which the stabilizing element assumes in the case of an unloaded, undeileeied stiffening element. A displacement exceeding the play available to the stahtifeiug element in die holder is prevented by the walls of the holder.

Moreover, the stabilomig dement is formed projecting from die stiffening element at a prcdeiernituPtf angle and is connected to the stiffening element at a fixed angle. The latter means that the connection between the stiipulhg element and the stabilizing dement is 'thatitepitihtats a change in the angle between tirte stabilizing: element and the stiffening: element if fite stabilizing element engages in the holder at the foot hhd: ffi during transport for example on a chain conveyor, :the stíílening: element is so heavily loaded fey goods fPSthig on the pallet that it deflects. 1 n this way,, the deflection at the ends of'the sfifîening element can be mmimizOd .even further. This angular stability is determined an the one hand by the selection of eorresponding snaseriafs ami. depending on this, by the thickness of the stif fening element and the dimensions of the connection. The stabilizing element can, ta example, be welded to the stiffening: element, screwed: to: it: or it can also bp: formed on it in one piece, A detachable connection bctwecti the stabilizing element and: tho stiffening element: is also conceivahle: ip: that, ta exampie, plus are formed oil the stabilizing element with: which it is inserted into blind holes which are formed m foe stiffening element. 11c connection can be effected to fft accurately, with little clearance fît, or with intertetweAftolÉiMi-íiíte formed, for example, at ihe ends of foe stiffening element with the result that the pins engage in the stiffening dement along the hmgifodinaf direction thereof & connection which can foe deiachetl is this way has the advantep foat the stiffentng element can be replaced when it wears without the stabilizing dements also needing to he replaced.

In principle, the deflection is already reduced if speh a stabilising dement is attached only at one end öli foe Mlfoning element; however, such a stahifeing elentCnt iá preterabl y arranged at both ends of the stiffening dement since its deflection then oi^^t^hetrí<i33^' «β&amp; loading on the pallet and foe runners and thus also the went and tear thereof takes pfoee uniformly, Äfeo, foe: stabilising dements do not seeessanlx, hare to sit at the end of foestiffening dement; here, however, the leverage is greatest over the length of the stiffening element, in addition or alternatively it is possible to provide more than one stabilizing élément at: each end. for example twofoalfofomg dements per foot. If the pallet, feet end runners ate formed such that the :«apssrs.esii6fööfá^ :.%!«X!»th|itee 0Vfcr three feet, one of which is arranged approximately in foe centre of the runner, ©tte: or more stabilizing elements can also be arranged at this position of the central fesot in she stiflenmg élément .flfefoéöté are used in one ramjet, foe stabilitriag demente can also hate dimensions such ihat they eonnecifoess: stiffening elements.

Ihe at least one sfohtlidng element is preferably formal plate-shaped, wherein ihe hroad sides of the plhfo: fosgöudfoai direction of tire runners. In this way, as iarge as possible a surface sma eatt be obtained on :whiph foe: forces arising during the deflection are distributed, with fee result that the loading osr foe wails of the holder can be kept low. Tits holder can he designed in such a; way that, in the deflect iotwfree state or in the ease of a small dÄotio», foe broad side of foplafe-foaped stabilizing dement rests almost completely or, a wall surface. the design of the at least one stabilizing element as a plfoe-ahaped body is not essemiah other strncturns are also suitable for use as stdiilidog element, Thus, for exasfofo, foe stiffenia^eflasgent ittn^ti^ivrifevte:$febi^^g':'ele!n<tmt on it in one piece fen a strand of materia! of corresponding thickness in foe matmer of a ?>racket, he; foe stabilizing elements are moulded simpl|t%rbeft<Ji«ig' foe ends tapped at each end of the stiffening element. fo éter to better distribute the förne apphed hy foe at lernst one sfobilizfog element to the walls of the holder and to relieve the holder in particular of local pressure peaks it is advantageous to partially fill at least foe area of the holder in the feet with foam, i>e* infill it with a foam'material in whte||hc stabilizing dement is then supported. The foamed material, ior example polyurethane, can be chosen to have a Shore hardness in a forge range such that it is capable, in the ease of a deflection of the stiffening element which is in principle to be expected but is restricted by thé wal ls of foe holder, of attenuating a movement, of the stabilizing element out of its restih|: position in the area whom the stabilizing element has a certain play. The area of the groove-shaped recess can also be completely or partially filled with a plastic foam which can be composed, for example, such foal if assumes a durttbie cmtiicction to the material of the runners and foeifeet. hr this way, g: bed cap: fee: prödhCédífor the Siißenittg element with foe stabilizing elements which can serve not only ip attenuate a relative movement of the stiffening dcntejit with rttnoors of foe fent, but also to reduce foe meehanies! loading on the feet mrl mnnem by fois relate imvmmà by wkm of fois attenuation and finally sÉ© tö fedtíee noise emissions during ihe* usefof tbC: pallet. or fite totem#s^faeeä'.:öl:ihe:féefsip.also be tilled with foam, ht à pefotod Ombodhuetzi, the h.older for the at least one stabilising element is designed as an opening accessible bom the deck. In this case, the fixing means preferably comprise a connection which can be detached ftoixt th© dcok between the at least Ohs stabilizing element and the beider. This connect ton can be designed, for example» as: ä : snap'©n connection which comprises at least one projection formed: on tire holder, on which at least.one: engagement: boohformed on foe stabilizing element engages, with the result that the stabilizing element: id hxód ih; the holder in a pnsitlve-locldng manner. Two engagement books can be «seit for example.

The engagement hooks are expediently connectedTO the stabilizing element flexibly. wHt.'iie result that they can be pressed away: horn, the projections wiÉouf special aids, whereby tlw eonnection is detached. In place of a snap-on eonnectlotg ©User detachable connections can also be used, for example screw or plug connections. Connections which at® not readily detachable, such as an adhesive bond, are also conceivable altefnatives if the intended use should make a particularly strong connection necessary.

The stiffening element described previously and its combination with orte or more stabilizing elements is particularly suitable for plastic : pallets in which the deck, feet and% sutmers are formed in one piece, since in the ease of such pallets die same materia! is used for two or all; of the eompoitenta which .asm mio mpresents, however. only a compromise .for the individual components. The effect of the stiffening elemem is particularly clear here.

In a particularly preferred embodiment, the stiffening element comprises an overhang with respect to the standing surface-of-the runner in the recess of which it is inserted. Depending on the choice of material: for the stiffoning element, ft can in this way be controlled whether either the stiífomng element on the runner or the roiforS: Or chains of the eoitesponding conveyor arc exposed to greater wear and tear. Is order to keep foe wear rollers or chains, as low as: possible, the sttffomag element is preferably maimfictumd tom alumininm which, in combination, with steelj also has favourábl«i'öfoto.:yhaviöMí'forth®: use ©f conveyor belts. Fven an ovfohang of a few tenths of a millimetre is sufifeieot fo .substantially reduce the wear;, with tire material cost is kep t within ihnits. ft is understood thtit the totures mentioned above and,those yet to he explafoed beiow catrhe used not Only in:the stated epmhmatimis Imt also in other combinations or atone without departing torn the scope of the present invention,·

Brief description of the invention

The invetUion is explained in even more detail below by way of example with reference to the attached drawings which also disclose foamros essential to the invention. There are shown in:

Fig. Î a plastic pallet,

Fig, 2 a stiffening element with stabilizing elemmiis apghedthereon.

Fig, 3 a section of a^^ stiffening element and

Fig. 4 a eoöipäfisön of the bending behaviour of the sitifening element with and without stabilizing elements. í>ét»ifed description of the drawings in Figure 1 fifetof all íM stracfere of a typical piastte palim: I is shown ftmu the tmderside.Here, % fjlsstie pallet 1 pfece hnt it can also fee etasposéd of several pris, The plastie pallet;! comprises a deck 2 which is arranged ia Figure f oh the side of fee pallet feeing m^Éma- fe&amp;dfceerw*; Feetfe and 5 which project downwards from tfee deck 2 are formed 0» the mtderside 3 of the deck 2, The plastic pallót 1 shown hero, which can, fi» example, be a haif-paiiet w ith, the rneasHfeKtenis »f 80ö mm % 6ÖÖ mai or also a larger pallet with measurements such as e.g. 1200 e x gQQfrnm, has «ine feci 4. 5 ip total The feet 4 OH the longer sides of the pallet ate formed aarrower tbaa the ft#:#· which lie between theta; however, this design of the fer is not ahsolately prescribed, all of the feef eap jpai: as well he designed the same. In addition, the plastie pallet 1 has three runners ft wlrich in each case conned feme feci 4, 5 to each other and are arranged parallel to each other and to the narrower edges of tire pasdn pallet I, Ties is also to he nrtdersiotxl purely by way of the plastic pallet 1 ean alternatively er in addition also just as well comprise rentiers along the longer narrow side of the pallet, at right angles to fee runners 6 shown here.

At least one groove-shaped recess 7 Mating in the longitudinal direction of the runners 6 is ihrased On the underside of at least one of the runners € here on ail three runners d. In the case of the runners 6 shown here* in esel ease m provided whih is arranged centrally wiferespeet to die transverse axis of each of the runners, Tïowever, several: gtoovmshagad recesses can also he ihrmed orr orte runner 6, tor example two OH the tnargins of the mmtsr ot : feme; llton on the margins and in the cenim. ft is also possible in additton m design the whole underside of the nnutef 6 as a singlefecess 7 with fee resultfeat only the margins of the rannet 6 remain. A Stliemng element is irtserk-d in the at least one recess 7, Such a stiffening clement is moulded Troth- a mater-al which has a higher modulus of elasticity than the material from which the runner 6 is moulded. The stiffening element is fixed in the recess via fixing means.

Sue! a stiffening element ! is shown by way of example in f igum Sphere it is a bar-shaped efefeenh tor example also made (if a plastie or tnade of a metal such as, for example, alumfeiuTn. The stiffening element I cars, lor example, be fixed in thé formers 6 via screws, wherein, in the case of loading which can lead to a defleeiiÖn^''SfevUa::lf:lfeidn::ft.,PuÍÍktmiti8Ííy smaller degree than without stiffening element 11 - such connections can he so greatly meélmhiealiy átfessed that these connections are desiroyed in unfavourable efeeurnsitfeces· Morn advantageous are other, purely positive-looking connections, stich as can he achieved for example when lugs lying opposite each other at certain distances are moulded ffefe the plastic material of the pallet on thé outside of the groove-shaped recess 7, which lugs prevent the stiffening elements 3 from falling downwards when fife plastic pallet 1 Is standing upright.

In the example shown in Figures 1-3, tire siifienfegfeleniem is, however, not fixed in dm teem dMfefly ly auch fkitig means, but rather a stabilizing element 9 is hrmoged at each end of the stiffening dementi hi fdatlbh to Is longitudinal direction. Fach of fee stabilizing felem en is 9 is formed engaging in a contjspmfefeg holder 10 on one of the feet 4. The stabilizing eiefetfeiS 9 project front ihe stiffening dement I id ä pfedetennfesxi angle, here at a right angle. They afe fefrtfel plate-shaped, and their broad sides are itÜgtfel transverse to fee iongifediuai direction of the ruotfefe |hstidhof fee stiffening element H. in particular, the stabilizing demerits 9 are at fixed angles with respect to life: stiffening element I : the Ifeiders 10 wlfefe are formed as openings or indentations are bordered by walls which counteract artd restrict a displacement of this stabilizing element 9 out of its resting position, which can be caused, lor example, by loading the plastic pallet l with goods on a chain, conveyor. Because of the angular stability, on loading caused by deflection, the tingle between the stiffening elemen! 8 and Site stabilizing element V does oof change or changes only negligibly, also when the displacement of the stabilizing element 9 is limited by the walls of the holder 10. fti tins citigg the ftxrng means which serve to fix the stiffening element in the recess ? are advantageously not attached to or formed on the recess 7 ot s lse stiffening element 8 but comprise a cohdection ' betssfetSbÄ S&amp;M&amp;itg;' element« 9 and the holder 10. This connection Is advattiageously designed detaehsihie, with the: result that thçsstiflènmg: «lemeßt: 8: with the sttifoilixing elements :9 : attaefeetithereto cap foe replaced if «eeësSaiT, lor exantplé on wearing oui. In did example Shown, the fixing means comprise a snap-ossconnection, for which tiexifefe engagement hooks ft are timped « the stabilizing éléments 9- These engage with projections II fbrmed in tire besides- 10 ~ represented for example in Fig, 3 - with the result that the siabilixmg elements 9 am ixed m the holder itka^ fa the embodiment shown in Tig, 3y tl« holder 10 is designed as at) opening accessible from the deck 2, wsth the result that the connection eatt fee detached without further aids,

In su iter to improve Ihe hold of the stabilizing elements 9 and ot ihestiílfefemg element 8 in the holdere 10 or the recess 7 and írt otdet io heiter distribute the forces which can arise ditting a deflection locally and thereby to avoid local pressure peaks as well as in order to achieve: art additional biiethialîon of the displacement, the recess 7 artd the holders 19 can be partially filled with a plastic foam, tor exatuple with a polyurethane foam with a lower Shore hardness titan that of the material ^bis filling of the element 8 stabilizing elements 9 and the walls of the holders 10 with loam can also result in a reduction in tiré: noise pollution which could be caused fey a relative ßiovemept between stafeilMhg elemehls 9 and the naiaers 6 when the piastre pallet 1 is transported: fie connection between ffee stabilizing elements 9 and the stiffening element 8 is at a irked angle, i,e. on ioadtitg the strtiermrg element 8 which leads ro a deflection, the stabilizing elements 9 held in the holders 1Ö counteract such a deflection since the angle at which the stabilizing elements 9 project from the stiffening element 8 is kept almost constant, Because ihe displacement of the stahilizing eienrents 9 &amp; limited by tits wails of the holder 10 arid fedeause ike connection of the stabilizing elements 9 and thestiffening; elenmnt i: is: at a fixed angle, lire deflection is considerably reduced. The connection between the stabilizing elemem 9 and the stiffening dement 8 can he formed, for example, as a :ttte stabilizing elements 9 cat) also he formed in one piece on the stiffening ele«íétit%:É:ipelti^Wy preferred design which is particularly stable artd manages with less material compared with a one-piece manufacture consists in providing bhnd holes in each case at the ends of the stiffening elements 8 itt the longitudinal direction into which cores «ponding pins formed on the stabilizing elements 9 are plugged. This also makes it possible to replacethe stiffening element 8 irrespective of the state of wear of the stabilizing elements 9.

In Figure 4 the deflection of (fee stiffening element 8 is outlined by way of example, wherein in Figure 4a the deflection of a stiffening dement 8 without stabilizing elements 9 is shown and m Figure 4b the áefíeetiou is ámm ím a stiilktisg: element 8 with stafeilfeing elements: 9 with the same loading; The arrow symbolises in each case the loading caused by the cargo, The pallet is supported on a chain conveyor, the chads* of which ate syinboiiKcdby the triangles. in a partpilarly preferred dteigsrthapmt^ 7 and the stiffening element 8 inserted in the recess 7 htwe dieteasions such that the stÄtihig cfepeat 8 comprises an overhang with respect to a base ~ also referred to áyftpding smfitce -- of the rupee 6 ob whfch thedtpnpáönnstliy -rests ,a»d htto the recess 7 of which it la inserted. Iliis overhang Is prefembly a few tenths of a millimetre but can also he in tire range of millimetres. if, for example, aluminium is astsl as matériái for the stiffening element* the wear of the runners 6 made of plastic on roller or chain w^^^fe^ardMNÂrÉiô^jàihiaUons in which the rollers or chains ate rotating but the further transport of the plastic pallet I is; inlpëdëd, cun he signäßcaritiy reduced since by means of the overhang first ofailtPyiltePfe^^ is exposed to inereased wear. Only when this overhang has been stripped, for example by à continuons moymnenf of the Cham of a chain conveyor, is the runner 6 of the plastic pallet Í aiected, The lip ef such a plastic paliét lx in winch the rrnmeis piece ód ilie páliéh can be siipiificahtly incrented in tins way* ysithough ehoosiitg shffeuing elements -8 made of another maíerial winch is coniparahíe in terms of hardtsCSS ybth tbat of Éé chain or the rollers of the eorppsudhtg conveyor reduces the wear of the Mßtphg elemem § , the weal dp the conveying eoinponenia is increased, which as a rule is nm advantageous. in any case* when ihe stifienipg dleiliprit 8 is worn, ont, i.e. tiw ovethsnig has been rpueed removal 1er example by a chain conveyor* the plastic pallet 1 can he used further by replacing the stiffening eicrhem 8 and opitonally also the stabilizing elements 9. in the case of the snap-on mechanism presented; here, which represents only one of various pdSSibiHties for fixing, the replacement can be effected in a pahlsMhpdiy'iiM^^ by hand without large expense by pressing tte engagetaest hooks II towards each ether and subsequently pressing tire stabilizing eletnents 9 downwards out of the pallet. Tiw íiih ttf tire pallet is ferthee increased with little additional cost in that the stiffeaing element 8 cap he changed wlÉoöt special expense*

By using stiffening elements 8 and optionally staMiemg ekments 9 in the plastic pilot 1 deterihed previously, not only can the mechanical: loading On die rumters 6 tmd thus on Ihe pallet In the form of a deflection during transport on conveying etpgment ire reduced, but the Ule i>f such a plastic pllet ! can also be suhstantialiy extended.

EÏSPM REFERENCE NUMBERS 1 Plastic pallet 2 Deck 3 Underside ofthe deck 4 Foot 5 Foot 8 Runner 7 Recess 8 Stiffening element

Claims (6)

1. 9 Stabilizing clement H) Holder lî Engage tnenl hook 12 Projection Λΐΰ \N V Ml RAKODÓLAP MERE VlTÛEL EM ME L SZABADALMI ÍÓ^^ÓPi'píM !, Műanyag rakodólap ( 1}. amely elszállítandó tárgyak megtáma&amp;KtMfa fedél lemezt (¾ a fedéllemez (2) alsó oldalából (3) ki&amp;yülóan kialakított lábakat fek,5)., legalább két lábnak (-1, azok alsó oldalainál való csadskoztatására kialakított {alpaka! {6} tartalmaz,. azzal jeljemezv«, bogy * legalább-M ópík talp (fi) alsó oldalán, a talpak (6) hosszanti irányában terjedő legalább egy horony alaké mélyedés (?) van kiképezve, a legalább egy rnstyedésbe (7) a talpak (¾} anyagának ,:«tg«b^É®8^L«©átó^í^aáij nagyobb rugat-tnasságl tnoánhisszal rendelkezi van behelyezve, aboi a mersvitöelem (8) a mélyedésben (7) rögzltöéiemekkel van rögzítve, ,*·. legalább ep stabiHzálóefcm (°) van és a merevMelemhez (8) képest egy meghatározott szögben öí* rendezve és a merev kőelemhez izögbl/íosab csatlakoztatva, * a legalább egy »jahiliztHóeiofn (9) a lábak:f!) egyikében lévő 10 ) való kaROSö-- lódásra alkalmas,
2. 2, Az 1. Igénypont szerinti műanyag rakodólap pí? jellemezve. hogy a rögzisóelentek legalább agy olyan iklszögellést tartalmaznak, amely részben iSéífedi a:legalább egy mélyedést (7), valamint a
3. 3, Az 1, vagy 2. igénypont szerinti műanyag: rakodoktp (Íj, azzal jebetnePe, hogy a nterevítöeiöÉlPIlbM vagy szalágikialákitásé, és - egy-asgy siabilizálóelém Θ) van elrendezve a merevitöeiem (8) mindkét yépftéb:
4. 4, Az í-A. igénypontok bÉonslyike szerintiműanyag nikodolap :(1¾ azzal jellemezve., bogy a fogtálat (10) egy, a ledeiétnéz (Slíelöl elértiető nyílásként van kiképezve, és - adSgzítöeaskőzök a legalább egy stáMláálöetent'fl^is a ifoglnkt|l%:k03tôii5, a íedélleinez felól oldható kötést foglalnak magukba. S, A 4,. .mŐa&amp;yág rakodólap (l), »z**l jellemezve, hagy a kötés reieszelőkötéskétd: van kialakítva es legalább egy olyan. a foglalaton 00) kiképzeti fölét Π2) lartalmaz. amely egy, a legalább egy siablHzáióélemen (9) kiképzett kampó-alakú retesszel (1 í.s kapcsolódik oly módon, hogy a legalább egy stabílMktelem (9) afögiklaiban (1Ö) als.kzárö módon van rögzítve. A, ..Az 1-5. igénypontok bâmelyïke szefiöti műanyag rakodólap (1), azzal jellemezve, bogy a legalább egy stabiiizálőelent (9) lemez alakéra van kiképezve, úgy, hogy a szélesoldalai a talpak (6) hosszat# irányához képest keresztben Vánhák ekendezyb, % Az 1-6. igénypontok bármelyike szermii műanyag rakodólap (Π, azzal jellemezve, hogy a legalább egy stabihzálóekm (9) a nierevitbelemhez {&amp;} hegesztett, ragasztó- vagy csav arkötéssel van csatlakoz#* va, vagy a legalább égj stabilizálódom {^í és a tnereviíoeletn (S) egy darabban van kialakítva, vagy a legalább egv stabíiizáléeiern (9) a merev Itôdcmhez (S) oldható dugaszaié kőié;; tévé» van csatlakoz#* va.
5. 8. Az 1-7:, igénypontok bármelyike: szerimi műanyzg rsköíiéiap fl.),: azzal: jellemezve, hagy :égy,: a nterevitôelem ÇSJ: Ab# (6) kőzööt íizág:, és/vágy a:legalább egy stabilízákklem (9) és egy, a foglalatot (10) elhatároló fal kőzbíti: hézag adianyag: babbal van: feltöltve,
6. 9. Az jeHemezye, bogy a mélyedés ből;?} behelyezett mesevíibélem,0) a talp Ü aíapíéSületeMl abba mélyedésbe (7) nyúlik, amelyikbe be van helyezve. lö. Az 1-9. tgénypontök bármelyike szeíínb möaiiyag tákedölap (lj, azzal jellemezve, Itogy a merevítődéin {8} alumíniumból van.