瑞典专利SE1000896A1 Scaffolding trolley

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专利摘要:
A trolley (1) for a scaffolding is cast in plastic or composite material. The trolley (1) has longitudinal reinforcement ribs. On the underside of the trolley (1), the reinforcing ribs have extensions which can be accommodated in recesses (2) on the upper side of the trolley (1). The recesses (2) have a single position that corresponds to the position of the pre-reinforcement ribs. The trolley (1) is thus easily stackable. Fig. 1
公开号:SE1000896A1
申请号:SE1000896
申请日:2010-09-03
公开日:2012-03-04
发明作者:Conny Renghammar；Tobias Josefsson
申请人:Octaflex Ab；
IPC主号:

专利说明:

10152025302Because the environment at the construction site means a large contamination of the trolleys, partlyclay, stone and gravel from the unfinished land around the building and partly cement,concrete and plaster originating from the construction itself, it is a problem that the traditionalthe trolleys are difficult to clean. The material is soft, and stones and the like can be easily wedgedfixed in openings between the boards included in the trolley. The wooden surface is also porous and isthus a surface where the hearths such as concrete easily get stuck. The traditional wooden trolleys arethus difficult to clean and when they have become too dirty they must be discarded, whichmeans that their lifespan is quite short.
While the wooden trolleys are being used and worn, wooden slips often come loose, which can damagethe construction workers when handling the trolleys.
Another problem is that the trolleys generally have a fairly anonymous appearance andtherefore are attractive for theft and sale in a secondary market.
In order to try to solve some of the problems to some extent, they have started to make plastic trawls.lar. An example of such a trolley, which can be considered as a nearby older technology,is WO2005 / 047621. This trolley, which due to its material may be assumed to be less sensitive toweather and wind, however, are not strong enough to be made entirely of plastic. Plasticmust be reinforced with embedded profiles, preferably of metal, leading to ahigher weight. The problem of high weight and consequent difficulties in handlingthe trolleys are thus not solved. The shown trolley also does not let water through itssurface layer, which means a risk of icing and slipping in winter.
TROUBLESHOOTINGIt is thus desired to provide a trolley which is both strong and easy to handle, and whichhas a long service life.
PROBLEM SOLVING1015202530The objective on which the invention is based is initially achievedindicated trolley is given the sign that the reinforcing ribs on the underside of the trolley have oneextensible in recesses with corresponding placement on the top of the trolley,so that the trolley becomes stackable.
COMPILATION OF DRAWING FIGURESThe invention will now be described on the basis of the accompanying drawings. On theseshows:1 g 1 a trolley according to the invention in a view straight from above;ﬁ g 2 the trolley according to ﬁ g 1 in perspective obliquely from below;3 g 3 a view straight from the side of the trolley according to the invention;4 g 4 a detailed view of a part of the recess in the trolley according to the invention;5 g 5 is a sectional view through one of the pre-reinforcement ribs included in the trolley;6 g 6 is a perspective view of a securing member included in the invention;ﬁ g 7 is a perspective view of the securing means in a mounted position; and8 g 8 a perspective view from below of the mounted securing means.
PREFERRED EMBODIMENTFigure 1 shows a trolley 1 according to the invention seen directly from above. Trolley 1 is made in oneplastic or composite material. In the preferred embodiment, the trolley 1 is made ofpolypropylene with a mixture of 20-25% glass ﬁ ber. This material is recyclableand may from the beginning also comprise recycled constituents in whole or in part. Trolley 1 is1015202530made of one and the same material, which also facilitates recycling. Trolleys 1can easily be given color already at the time of manufacture, and the owner's name can be embossed in a waywhich is difficult to obliterate.
The trolley 1 rests at its short sides 10 on transverse bars 25 in a scaffolding. Forfor this purpose, recesses 6 are arranged on the underside of the trolley 1 and through its side edges.
The surface of the trolley 1 is perforated with a large number of holes 3. These holes allow both rain andmelt water such as dirt and gravel drains away through the holes 3. The surface also has a quantityminor elevations 4 which have a friction-increasing and anti-slip effect.
A number of elongate ribs 5 extend over most of the length of the trolley 1 in itslongitudinal direction. The ribs 5 are visible on the upper side of the trolley 1 as recesses 2 with a shape whichcorresponds to the shape of the ribs 5.
Fig. 2 shows the trolley 1 obliquely from below. It can be seen here that the trolley is built up of a net-plant structure with downwardly open holes 7. Each of the holes 3 on the upper side has a counter-corresponding hole 7 on the underside of the trolley. Channels 11 extend from the holes 3 to the holes 7with side walls 15. Between the channels 11 which extend between the holes 3 of the trolley 1upper side and the holes 7 on the underside of the trolley 1 there are also further connecting walls 8delimiting upwardly closed, smaller channels 9. The network structure that builds onea large part of the trolley 1 is material-saving, because it is strong without the material thicknessmust be the same as the thickness of the trolley 1. The network structure therefore also meansthat the weight of the trolley is kept down.
The ribs 5 have a reinforcing function, to prevent deflection and breakage of the trolleyl. The ribs 5 are arcuate in their longitudinal direction, so that they have their greatest extent inheight in the middle of the trolley 1, where the need for reinforcement is greatest, because inthis point is at a maximum distance from any of the supports 25 atthe ends of the trolley 1. The largest increase on the ribs 5 also means the largest reinforcementagainst deflection and crime. Where the need for reinforcement is less, the ribs 5allowed to have a lower height.1015202530The ribs 5 are tower-walled in relation to the height of the trolley 1 and to their own extent.
In the width direction, the ribs 5 have a substantially wedge-shaped cross-section, so that their lowerportions are narrower than their upper portions. The wedge-shaped cross-section and the fact thatthe beams 5 are thin-walled, so that they are substantially hollow, means that the trolleys 1 are simplestackable, since the recesses 2 on the upper side of a trolley themselves contain the lower parton the ribs 5 on a trolley lying on top 1. The arcuate shape of the ribs 5 also means that the trolleyThe lamas are also lengthened in relation to each other.
In ﬁ g 2 it also appears that the trolley has a recess 6 at the respective short end 10. The recesses 6extends transversely to the longitudinal direction of the trolley 1 and has in the preferred embodiment oneapproximately semicircular or U-shaped cross-section, which may be complementary tothe cross section of the substantially horizontal bars 25 in the scaffolding. You canalso consider other cross-sectional shapes of the recesses 2, but the essential thing is that theythe rods 25 in the scaffolding are removable in the recesses 2.
In the corner areas of the trolley 1, near the short ends, the trolley 1 is narrower than its main oneand maximum width. The purpose of this narrowing is to make room for essentially verticalsbars, so-called spiers in the scaffolding. These approximately vertical bars are arrangedat regular intervals, so that with standardized dimensions there is room to arrangethe short sides of six trolleys 1 next to each other on the horizontal bars. Between each pairof adjacent trolleys 1, the free space at the ends becomes wider thanthe space between the walking surfaces of the trolleys l. If the space at the ends is sufficientwide to accommodate a vertical bar, the dimensioning of the trolleys l is such thatthe space between the walking surfaces is narrower than the maximum allowable spacebetween the trolleys l, according to current regulations 25 mm.
Along each long side of the trolley 1 is arranged an edge portion 24, the upper side of whichlies in the plane ﬁ ör the walking surface on the top of the trolley 1 The underside of the edge portion 24 has transversedry reinforcing ribs 26 with a curved failure so that a longitudinal, substantiallyhorizontal bar is removable below the edge portion 24, along the long side of the trolley. Suchbars occur at regular intervals in the scaffolding, usually adjacent tothe vertical bars. They are generally at about the same level as the transverse ones1015202530the bars 25 at the short ends 10 of the trolleys 10. The edge portions 24 of two adjacent trolleys 1can meet above the longitudinal horizontal bar, without anyone running asexceeds the maximum allowable dimension occurs.
In the area between the outer ends of the ribs 5 and the recesses 2, the length of the open channelsand the upwardly closed channels 9 have been varied so that, in certain zones, they have been shortened,while achieving sufficient strength. The purpose of the shortening of the channels insome zones are to achieve an additional material saving and thus also onefurther reduction of the weight of the trolley 1.
Figure 3 shows the trolley according to the invention seen straight from the side. Ribbomas can be seen in this ﬁ gur5 arc shape most clearly and it can be seen that the extent of the ribs 5 in height is greatest in the middlebelow the trolley 1, at the longest distance from its short ends 10. The height of the rib 5 decreasesgradually in the direction of the short ends 10 and the ribs 5 terminate a distance from the respectiveshort end, where special reinforcement of the trolley 1, with the dimensioning of the trolley 1 in itpreferred embodiment, is no longer necessary.
At the short ends 10 of the trolley 1, the recesses 6 are also visible in this ﬁ gur, where transverse bars inthe scaffolding is removable. As previously mentioned, the recesses are U-shaped orapproximately semicircular.The edge portion 24 and its reinforcing ribs 26 are also visible.
Fig. 4 shows a detail view directly from above of one of the recesses 2 on the upper side of the trolley 1. In Fig.4 shows the middle portion 12 of one of the recesses 2. In this area the recess 2 is widened, sothat it is possible to insert a hand into the recess, even if the hand is covered with oneglove, such as a work glove or a winter glove. It thus becomes possible touse this portion 12 of the recesses 2 as a handle when handling the trolleys 1, regardlessclimate and protective equipment. This means that the trolley 1 is particularly suitable foruse on a construction site even in winter.1015202530In addition to the recess 2 being widened to provide a handle 12, it can also be seen in Fig. 4 thatthe recess 2 is provided with a series of transverse partitions 13 at a distance from each other.
These partitions 13, which are located relatively close to the bottom of the recess 2, aim tostiffen the recess 2 and keep it open, even when the trolley 1, and thus the recess 2, is exposedfor lateral forces, which could otherwise compress the recess 2 and thusalso defining parts of the trolley 1. To make it possible to insert the lower partof the bar 5 on a first trolley in the recess 2 on a second trolley, raise it on the transverse onesthe walls 13 not higher than that in this situation they are free from, or just touching,the lower part of the rib 5 on the second trolley with its upper portions. This means inthe preferred embodiment of raising it on the transverse walls 13 does not become a limitation.factor for the trolleys 1 to be able to be stacked as space-saving as possible, ie thatthe protruding parts of the ribs 5, it must be possible to accommodate them completely in the recesses 2.
The spaces between adjacent pairs of the transverse walls 13 in the recess 2 are providedwith drain hole 14, to divert water from precipitation or cleaning.
In ﬁ g 4 the friction-increasing elevations 4, which are arranged on the upper part of the trolley 1, can also be seen.side around about half of the openings, preferably in octagonal formations, toprovide a non-slip protection.
Fig. 5 shows a section through the rib 5, substantially along a part of the line A-A in Fig. 1.
From the section it appears that the rib 5 is in principle thin-walled, which in the present casemeans that it is non-solid and that the walls are thin in relation to both the ribs 5total height and the height of the trolley 1. The thickness of the walls of the bar 5 is of the same sizeorder of play which satisfies the condition of the trolley 1 in general, which is an advantage from thefrom a point of view, where a reasonably homogeneous material thickness is preferred in an object whichto be manufactured.
The rib 5 tapers in a downward direction so that its outer shape in cross section is approximately wedged.fonnigt. This means, as previously mentioned, that the downwardly projecting portion of the bar5 is completely or for the most part insertable in the upwardly open recess 2 on a trolley 1, which1015202530is below, and the trolleys 1 are thus stackable on top of each other in a space-saving manner.way.
In ﬁ g 5 it is also seen that the walls 15 between the channels 11 taper in the downward direction and thatthe channels 11 are thereby expanded to a corresponding degree. This causes gravel, stones, concreteetc. which fall down through the upper holes 3 do not get stuck further down in the channel 1 1, becausethis is continuously expanded and gravity acts on the material that has passed throughholes 3. Thus, no significant amounts of dirt will accumulate in the ducts andthe cleaning of the trolley 1 becomes simple.Even if there is a risk of dirt accumulating in the recesses 2 in the ribs 5, acorresponding effect as for the holes 3 and the channels 11 to be obtained about the trolley 1 during cleaningturned upside down and possibly if water is supplied through the drainage holes 14.
Fig. 6 shows an anchoring or securing means 16 which is used for anchoring the trolley 1according to the invention at a scaffolding. The anchoring means 16 aims toanchor the pallet in the event of wind, etc., as normal operation of the trolley 1 does not really requireany special anchoring. The anchoring member 16 is in the form of a hook which extendsa piece around the substantially horizontal bar in the scaffolding, so thatthe trolley 1 cannot be lifted off the substantially horizontal bar in the scaffolding.ningen. The anchoring member 16 has a head 17. It is not possible to insert the anchoring member.the means 16 in any of the holes in the trolley 1, without special holes 18 for anchoringThe ring means 16 are arranged in the vicinity of the short side 10 of the trolley 1 and the recesses 6 for theessentially horizontal bars in the scaffolding. These special holes 18 forthe anchoring means 16 are designed so that the head 17 is sunk so that it lies in the trolley 1plan. On the underside of the head 17 there are arranged lugs 19, in order to releasablythe anchoring means 16 in relation to the trolley 1, in that the lugs 19 cooperate withcorresponding means in the edge of the hole 18 when rotating the anchoring means.
The head 17 also has a gripping means 20, so that the anchoring means 16 can be anchored anddetached from the intended hole 18, by insertion and rotation of the anchoringbody 16.1015202530The body 21 of the anchoring member 16 extends with a substantially straight portion 22 closesthead 17, to correspond to the length of the channel 11, i.e. the thickness of the trolley 1. At the body's 21outer end ﬁ there is a curved portion 23, which is intended to extend so that it reaches sufficientfar around the rod 25 to make it geometrically impossible for it to pass throughthe space formed between the outer end of the body 21 and the underside of the trolley 1.
The body 21 has a cross-sectional shape with four ﬂ axes, which in pairs form right angles betweenitself, ie the cross-sectional shape roughly corresponds to a plus sign. This means that anchoringthe ring means 16 on the one hand gets a smooth material thickness, which is a manufacturing advantageand secondly that the anchoring means 16 becomes strong.
Fig. 7 shows the anchoring or sealing member 16 mounted in one intended for this purposeholes, where it is possible to arrange lugs, behind which the snap means 19 are attachable.
We also see in the figure how the trolley 1 rests on a transverse bar 25 in the scaffoldingand that the rod is received in the recess 6. The recess 6 is quite deep, which means that the trolley 1even without the anchoring means 16 are securely arranged on the transverse bars25. The extent of the trolley 1 outside the bars 25, in the direction of the short ends 10, is as followssmall, that even if the trolley 1 was loaded at the edge, next to the short side, all suchloads, within reasonable limits, do not cause the trolley 1 to swing upwards around itthe nearest transverse bar 25, ie that the corresponding short end is lifted upwards.
The depth of the recess 6 also leads to the construction height of the trolley 1 above the transverse bar25 is minimized, which at the same time has the advantage of raising it for the railings mounted onstand, around trolleys 1, and which has an already Standardized height d, also sheepa sufficient height above the top of the trolley 1, ie complies with the prevailing rules onthe area.
Fig. 7 shows in principle a forming engagement between the transverse rod 25 and the recess 6,i.e. that the rod 25 almost completely fills the recess 6, but it is also possible touse the trolley 1 on rods that have other dimensions, provided that theserods are removable in the recess 6, ie they are not wider than the width of the recess 6.1015202510Fig. 8 shows the underside of the trolley 1, when it rests on a transverse bar 25, which isarranged in the scaffolding. The anchoring member 16 extends so far aroundthe bar 25 that it cannot be extended between the underside of the trolley and the anchoring means.
If the trolley is lifted upwards, the anchoring means 16 will abut against the rod 25 and onedownward force acts on the securing means, which keeps the securing means in position,ie the construction is self-locking. In ﬁ g 8, the cross section of the locking member is also clearly visible.
ALTERNATIVE EMBODIMENTSThe invention has now been described on the basis of a preferred embodiment whichshown in the drawings. It is of course possible to completely or partially modify the trolley 1according to the invention, in detail, while maintaining the general idea of invention. A wayto bring about such changes is, for example, the shape and size of the constituentsthe components, such as the channels 11, change. Another way is to change shape andsize of the ribs 5 and the corresponding recesses 2.
A particular embodiment of the anchoring member 16 comprises an octagonal head 17,which has snap fasteners on its underside. This alternative embodiment of anchoringthe member 16 is attached and released not by rotation but by snapping respectivelyloosening. The angular shape of the head 17 secures against rotation when mounted ina hole 18 with the corresponding forrn.
Further changes may also be made within the scope of the appended claims.

权利要求:
Claims (11)
[1]
Scaffolding trolley, cast in plastic or composite material, with longitudinal reinforcement ribs (5), characterized in that the reinforcement ribs (5) on the underside of the trolley (1) have an extension which can be accommodated in recesses (2) with corresponding placement on the upper side of the trolley (1), so that the trolley becomes stackable.
[2]
Trolley according to claim 1, characterized in that the recesses (2) have a shape which is substantially complementary to the outer contour of the reinforcing ribs (5).
[3]
Trolley according to Claim 1, characterized in that the reinforcing ribs (5) have a thin-walled, wedge-shaped cross-section.
[4]
Trolley according to one of Claims 1 to 3, characterized in that the reinforcing ribs (5) have an arcuate failure.
[5]
Trolley according to one of Claims 1 to 4, characterized in that recesses (6) are arranged at each end of the trolley (1) for receiving a bar in the scaffolding.
[6]
Trolley according to claim 5, characterized in that holes for securing means (16) are arranged in connection with the recesses (6) for securing the trolley (1) at the scaffolding.
[7]
Trolley according to one of Claims 1 to 6, characterized in that the trolley has narrower portions at its short ends for receiving an upright bar in a scaffolding.
[8]
Trolley according to one of Claims 1 to 7, characterized in that the trolley has edge portions along its long sides, the undersides of the edge portions being shaped to receive a longitudinal bar in a scaffold so that the edge portions (24) of two adjacent trolleys (1) meet.
[9]
Trolley according to one of Claims 1 to 7, characterized in that the upper side of the trolley (1) is perforated by a number of holes (3). 12
[10]
Trolley according to claim 9, characterized in that the holes (3) widen in the direction of the underside of the trolley (1).
[11]
Trolley according to one of Claims 1 to 10, characterized in that the recesses (2) have specially designed handles (12) for lifting the trolley (1).

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同族专利:

公开号 | 公开日

SE535254C2|2012-06-05|

引用文献:

公开号 | 申请日 | 公开日 | 申请人 | 专利标题

法律状态:

优先权:

申请号 | 申请日 | 专利标题

SE1000896A|SE535254C2|2010-09-03|2010-09-03|Scaffolding trolley|SE1000896A| SE535254C2|2010-09-03|2010-09-03|Scaffolding trolley|

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