FR3109133A1 - Two-part sliding rail bucket - Google Patents

Abstract

The invention relates to a bucket comprising a frame, a bucket body mounted on the frame, a door pivotably mounted on the body of the bucket to temporarily close an open end, and a folding roof mounted slidably on at least a rail of the dumpster. According to the invention, the rail comprises a first part (20a) carried by one of the sides of the bucket body and a second part (20b) carried by a corresponding side of the door, the two parts thus being aligned when the door obstructs the open end of the body but separated when the door allows access to the interior of the body. FIGURE OF ABREGE: Fig. 3

Description

Two-part sliding rail skip

The invention relates to a skip provided with a roof that can slide along the skip thanks to at least one rail in two parts.

BACKGROUND OF THE INVENTION

It is known so-called "tipping body" skips for which it is necessary to tilt the body of the skip to dump the contents from the rear of the skip.

Usually, in this type of tipper, a fold-out tarp is installed on one side of the tipper body or at the front of the tipper body.

The user must then manually fold and unfold the tarpaulin, which is therefore impractical for everyday use.

OBJECT OF THE INVENTION

An object of the invention is to provide a dumpster with a folding roof which is easier to use.

With a view to achieving this object, there is proposed, according to the invention, a skip comprising a chassis, a skip body mounted on the chassis, a door pivotally mounted on the skip body to temporarily close an open end thereof , as well as a fold-out roof slidably mounted on at least one rail of the tipper, the rail comprising a first part carried by one of the sides of the tipper body and a second part carried by a corresponding side of the door, the two parts being thus aligned when the door obstructs the open end of the skip body but separated when the door allows access to the interior of the skip body.

In this way, the invention offers a foldable and sliding roof while making it possible to dedicate a part of the rail to the door and another part of the rail to the body of the dumpster, which facilitates the covering of the dumpster, the roof thus being able to slide the along the rail from the front of the body to the rear of the body.

Advantageously, it is thus possible to open and close the door of the skip even when the roof covers the door because the two rail parts can be temporarily separated.

Optionally the two parts are indexed into each other when the door is in the closed position.

Optionally one of the longitudinal ends of one of the parts comprises a portion fitting into a corresponding portion of a longitudinal end of the other of the parts.

Optionally at least one of the parts is mounted on the bucket by means of an adjustment support.

Optionally, the adjustment support makes it possible to modify a relative position between the part and the skip along an axis parallel to a longitudinal axis along which the skip body extends.

Optionally, the adjustment support makes it possible to modify a relative position between the part and the skip along an axis parallel to a transverse axis along which the door extends between two lateral sides of the skip.

Optionally, a junction between the two rail parts is located at the level of the pivot zone of the door relative to the tipper body.

Optionally, the roof comprises arches carrying a tarpaulin, the arches being fitted with carriages sliding along the rail, the bucket also comprising means for actuating the roof using at least one drive assembly cooperating with the carriages for unfolding or folding the roof, the bucket comprising means for guiding a link of the actuating assembly during the pivoting of the door relative to the bucket body.

Optionally, the guide means comprise at least one guide comprising a portion around which the link of the drive assembly wraps when the door pivots relative to the skip body.

Optionally the portion forms a pivot axis for the link of the drive assembly at the level of the junction zone between the two parts of the rail.

Optionally, the guide means comprise an upper guide comprising an upper portion around which an upper strand of the link of the drive assembly is wound during the pivoting of the door relative to the dumpster body and a lower guide comprising a lower portion around which wraps a lower strand of the link of the drive assembly during the pivoting of the door relative to the bucket body.

Optionally, the lower guide comprises a pin making it possible to form with the lower portion a closed frame through which the lower strand extends.

Optionally, the upper guide has a tab allowing the upper section to be encircled with the upper portion and the first part of the rail.

Optionally, the skip includes means for tensioning a roof tarpaulin.

Optionally, the roof comprises arches carrying a tarpaulin as well as at least one blade extending between two consecutive arches, being fixed at each of its ends to said arches.

Optionally the roof also comprises a membrane carried by the blade.

Of course, throughout this application, the terms "upper", "lower", "front", "rear" ... must be understood according to the position in service of the bucket, that is to say the position in which the bucket rests on the ground on which it is intended to roll. The terms "front", "rear" must therefore be understood according to the position of the tipper in service and the direction of advancement of the tipper on said ground in forward motion.

Other characteristics and advantages of the invention will become apparent on reading the following description of a particular non-limiting embodiment of the invention.

The invention will be better understood in the light of the following description with reference to the appended figures, including:

Figure 1 is a three-dimensional view of a rear portion of a bucket according to a particular embodiment of the invention, the door being in the closed position;

Figure 2 is a three-dimensional view of the rear portion of the bucket shown in Figure 1, the door being in the open position;

Figure 3 is a zoom on a junction area between two parts of a rail of the bucket shown in Figure 1;

FIG. 4 is a perspective view from below of the junction zone illustrated in FIG. 3 according to a first orientation;

FIG. 5 is a perspective view from below of the junction zone illustrated in FIG. 3 according to a second orientation;

FIG. 6 is a side view illustrating a first roof variant of the dumpster shown in FIG. 1;

FIG. 7 is a perspective view illustrating a second roof variant of the dumpster illustrated in FIG. 1;

Figure 8 is a perspective view illustrating a third roof variant of the dumpster shown in Figure 1.

DETAILED DESCRIPTION OF THE INVENTION

Referring to Figure 1, the dumpster according to a particular embodiment of the invention, generally designated at 1, is of the agricultural dump type.

The skip 1 comprises a frame 2 and a skip body 3 which is mounted here tilting on the frame 2 and which extends longitudinally along an axis X. The skip 1 is here connected to a tractor (not shown).

In particular, the tipper body 3 comprises a horizontal bottom extended laterally by two vertical lateral flanks, namely a left lateral flank 4 and a right lateral flank (when driving the tractor), as well as a vertical longitudinal flank, ie a longitudinal flank front 7. However, the skip body 3 is open at its rear portion.

The skip 1 according to the invention allows quick and easy expulsion of the contents of the skip 1 when the skip body 3 tilts relative to the frame 2 by means of a telescopic cylinder of the skip 1. The skip 1 is so here a so-called “tipping body” tipper.

Furthermore, the rear portion of the tipper body 3, which is open because it has no fixed rear vertical side, is in fact closed by a pivoting door 6 which is movable between a closed position where it covers the open rear portion of the tipper body 3 (as shown in Figure 1) and an open position where it allows access to the interior of the bucket 1 by said open rear portion (as shown in Figure 2).

This door 6 comprises here more particularly a rear panel which extends transversely (that is to say along an axis Y' orthogonal to the axis X) in the width of the skip body 3. This panel is oriented substantially vertically when the door 6 is closed, so as to close off the rear portion of the skip body 3, and it extends obliquely above the rear portion of the skip 1, when the door 6 is open.

This panel is carried by a left lateral flank 8 and a right lateral flank, which extend longitudinally parallel to the axis X, that is to say parallel to the direction of the lateral flanks 4 of the skip body 3 when the door is in its closed position. The left lateral flank 8 is thus pivotally mounted along an axis Y (parallel to the Y' axis) on the outer face of the left lateral flank 4 of the skip body 3, and, similarly, the right lateral flank is pivotally mounted along the Y axis on the outer face of the right side flank of the tipper body 3.

The skip 1 also includes a folding roof 9 to cover the skip body 3.

Said roof 9 comprises a tarpaulin (not shown here) and a plurality of hoops 14 integral with the tarpaulin. The hoops 14 and the tarpaulin are thus arranged so that when the tarpaulin is unfolded, the hoops 14 extend at regular intervals over the length of the tarpaulin (and therefore over the length of the bucket 1) and when the tarpaulin is folded , the cover forms an accordion and the arches 14 are joined.

Each hoop 14 comprises a central arc 15 for attachment to the tarpaulin, said central arc 15 extending above the bucket 3 and having two legs 16 at its ends, legs extending respectively along the one of the side flanks 4 of the bucket 3. At their free end, each leg 16 ends in a carriage 17.

According to a first variant illustrated in Figure 6, the roof 9 comprises at least one blade 5a extending between two successive arches 14. The blade 5a therefore extends longitudinally along the X axis.

The blade 5a advantageously facilitates the folding and deployment of the tarpaulin.

The blade 5a is preferably shaped so that when the roof 9 is completely unfolded, the blade 5a forms an arc of a circle between the two successive arches 14. In particular, blade 5a is then curved towards the sky.

Thanks to its upwardly convex shape, the blade 5a folds outwards from the skip 1 when the tarpaulin is folded, which pushes the tarpaulin upwards, thus preventing said tarpaulin from rubbing against the skip body 3 Folding and unfolding of the tarpaulin is thus made even easier.

Advantageously, the wear of the tarpaulin is also limited.

Preferably, the blade 5a is made of an elastically deformable material in order to be able to easily fold and unfold to follow the movements of the tarpaulin. For example, blade 5a is a flexible plastic blade.

In the present case, the roof 9 comprises at least one blade 5a extending between each set of two successive arches 14. Typically the blade 5a extends between the central arc 15 of a first hoop 14 and the central arc 15 of a second hoop 14 successive to the first hoop 14.

Preferably, the roof 9 comprises at least two blades 5a, 5b extending between two successive arches and preferably at least three blades 5a, 5b, 5c.

In the present case, the roof 9 comprises for each set of two successive arches 14, three strips 5a, 5b, 5c extending between said arches 14. Optionally, a first of the three strips 5a extends between the two centers of the arches central 15 of the two successive arches 14, a second of the three blades 5b extends between the two straight lateral ends of said central arches 15 (i.e. at the level of the zone where said central arches 15 connect to the corresponding straight legs 16) and a third of the three blades 5c extends between the two left lateral ends of said central arcs 15 (ie at the level of the connection zone of said central arcs 15 to the corresponding left legs 16).

Because the central arcs 15 are themselves in an arc of a circle, the first blade 5a is higher than the two other blades 5b, 5c which are themselves at the same height.

According to a second variant shown in Figure 7, in addition to the blades 5a, 5b, 5c, the roof 9 also comprises at least one membrane 10 (only part of which is referenced) associated with at least one of said blades. The membrane 10 thus extends substantially laterally between the two sides of the skip globally along the Y axis.

The membrane 10 is preferably shaped so that when the roof 9 is completely unfolded, the membrane 10 forms an arc of a circle. In particular, the membrane 10 is then curved towards the sky.

Thanks to its upwardly convex shape, the membrane 10 folds outwards from the skip 1 when the tarpaulin is folded, which pushes the tarpaulin upwards, thus preventing said tarpaulin from rubbing against the skip body. 3. This makes folding and unfolding the tarpaulin even easier.

Advantageously, the wear of the tarpaulin is also limited.

In addition, the risk of the tarpaulin presenting areas of water retention in the event of rain is limited.

Preferably, the membrane 10 is made of an elastically deformable material in order to be able to easily fold and unfold to follow the movements of the tarpaulin. For example, the membrane 10 is a strip of flexible plastic material.

In the present case, the roof 9 comprises a membrane 10 associated with each set of three blades 5a, 5b, 5c which are arranged between two consecutive arches 14.

Each membrane 10 thus extends above the bucket between its two lateral sides.

Optionally, each membrane 10 is secured to the different blades 5a, 5b, 5c of the same assembly at the level of the center of each of said blades 5a, 5b, 5c. For example, a membrane 10 is integral at its first end with the second blade 5b, at its second end with the third blade 5c and at its center with the first blade 5a of the set of blades considered.

Returning to Figures 1 to 3, each hoop 14 preferably includes a temporary attachment rod 18 from the left leg 16 to the left carriage 17 and a temporary attachment rod from the right leg to the right carriage. For example, each temporary attachment rod 18 is screwed at a first end to the carriage 17 concerned and at a second end to the leg 16 concerned.

In this way, it is relatively easy to adapt the height of the roof 9 to the height of the tipper body 3 simply by providing temporary attachment rods 18 of different heights.

This proves to be particularly interesting if an extension is present on the tipper body 3 and you wish to remove or change it: it is in fact possible to change only the temporary attachment rods 18 and not the entire roof. 9. This is also made possible by the fact that the carriages 17 are arranged on the skip body 3 and not directly on the extension, as well as rails slidably receiving the carriages 17.

Indeed, the various carriages 17 on the left side of the roof are slidably received in a left rail 19 of the dump body and the various carriages 17 on the right side of the roof are symmetrically slidably received in a right rail of the dump body.

The two rails 19 being identical, we will now endeavor to describe the left rail 19, the following description also applying to the right rail.

The left rail 19 comprises a first part 20a carried by the left side flank 4 of the skip body 3. The first part 20a is thus secured to the skip body 3.

The first part 20a extends from the front end of the left side wall 4 to the level of the pivot zone of the door 6 on the skip body 3. In the present case, the first part 20a comprises a first end longitudinal end arranged at the level of the front end of the left lateral flank 4 of the tipper body 3 and a second longitudinal end arranged at the level of the front end of the lateral flank 8 of the door 6.

Thus the first part 20a extends along the left side flank 4 of the skip body 3 over a short distance only along the left side flank 8 of the door 6. The first part 20a is however not carried by the door 6 and is therefore not integral in rotation with the door 6. In this way, the left side flank 8 of the door 6 is pivotally mounted on the second longitudinal end of the first part 20a along a hinge axis A parallel to the Y axis. As a variant, the first part 20a extends along the left side flank 8 of the door 6 without touching it.

It is noted that in all cases, as the rails are arranged outside the skip body 3 and the door 6, the door 6 pivots between the second longitudinal ends of the first parts 20a of the rails 19 along the axis A when the door 6 moves from its open position to its closed position.

The left rail 19 also comprises a second part 20b carried by the left side wall 8 corresponding to the door 6. The second part 20b is thus fixed to the door 6. In the present case, the second part 20b comprises a first longitudinal end arranged at the level of the front end of the left lateral flank 8 of the door 6 and a second longitudinal end arranged at the level of the rear end of the left lateral flank 8 of the door 6. Thus the second part 20b extends here only along the left side flank 8 of the door 6. The second part 20b is therefore not integral in rotation with the skip body 3.

The two rail parts 20a, 20b are also arranged so that when the door 6 is in its closed position the two rail parts 20a, 20b are aligned. In this position the two rail parts 20a, 20b thus extend over their entire length parallel to each other and to the axis X. The left rail 19 then runs over the entire cumulative length of the skip body 3 and door 6 between the front of the tipper body 3 and the rear of door 6.

The left carriages 17 of the roof 9 can then slide over the entire length of the left rail 19 either along the tipper body 3 or along the door 6.

On the other hand, each part of the rail being carried either by the bucket body 3 or by the door 6, when the door 6 comes to open to pass from its closed position to its open position, the two parts of the rail 20a, 20b will find themselves separated so that if the first part 20a still extends parallel to the X axis and has not moved with the opening of the door 6, the second part 20b extends inclined upwards relative to the first part 20a and to said axis X.

Note that the junction between the two parts of the rail 20a, 20b (when the door 6 is in the closed position) is in the same area of the bucket as the Y axis and the A axis.

Preferably, the two parts 20a, 20b of at least one of the two rails 19 are shaped so that they can be indexed to each other when the door 6 is in the closed position. This ensures that the two parts 20a, 20b are properly aligned with each other when the door 6 is in the closed position.

Typically the second longitudinal end of the first part 20a and the first longitudinal end of the second part 20b are provided, one with a male member and the other with a female member cooperating together to temporarily index said two parts 20a , 20b.

For example, the male component is an indexing lug that fits into a groove forming the female component. For example, the male member is carried by the first longitudinal end of the second part 20b and the female member by the second longitudinal end of the first part 20a.

It is noted that the indexing means are located (when the door 6 is in the closed position) in the same area of the bucket as the Y axis.

According to a particular embodiment, and with reference to Figures 4 and 5, at least one of the parts 20a, 20b of at least one of the rails 19 is secured to the element of the bucket carrying it (body of bucket 3 or door 6) via at least one adjustment support 21.

Thus it is possible to finely modify the relative position between the rail part in question and the element of the bucket 1 carrying it in order to ensure proper alignment of the two parts 20a, 20b of the same rail 19 (when the door 6 is closed).

Preferably, at least one of the parts 20a, 20b of at least one of the rails 19 is secured to the element of the bucket 1 carrying it (bucket body 3 or door 6) via at least two adjustment supports 21 each associated respectively with one of the longitudinal ends of said part.

Typically the adjustment support 21 comprises a base for fixing to the element of the bucket 1 considered (bucket body 3 or door 6) and a fixing plate to the corresponding rail part, the fixing plate being movable along at least a degree of freedom vis-à-vis the fixing base and the adjustment support further comprising a member for locking the fixing plate to the fixing base in order to temporarily eliminate said at least one degree of freedom once the alignment of the two rail parts 20a, 20b assured.

For example, the fixing base comprises at least one groove in which a lug of the fixing plate can slide, the locking member comprising one or more screws to fix the relative position of the lug in the groove.

Preferably, the two parts 20a, 20b of the same rail 19 are each secured to the bucket element 1 carrying them via at least one respective adjustment support 21. In the present case, the at least one adjustment support 21 associated with the first part 20a allows a relative movement between said first part 20a and the tipper body 3 different from the relative movement authorized by the adjustment support 21 associated with the second part. 20b between said second part 20b and door 6.

In a particular but non-limiting manner, the first part 20a is secured to the skip body 3 by at least one adjustment support 21 temporarily allowing a translation of the first part 20a vis-à-vis the skip body 3 along an axis parallel to the axis X (i.e. along the length of the bucket 1) and the second part 20b is secured to the door 6 by at least one adjustment support 21 temporarily allowing a translation of the first part 20a vis-à-vis screw of the bucket body 3 along an axis Z orthogonal to the axis X and to the axis Y (ie according to the height of the bucket 1).

We will now describe the actuating means of the roof 9 with reference to Figures 1, 2 and 3.

In particular, the actuating means are shaped so that the roof 9 unfolds from the front of the dumpster 1 to the rear of the dumpster 1 when the door 6 is in the closed position.

On the left side, the actuating means typically comprise a driven pinion arranged at the first longitudinal end of the first part 20a, a driving pinion 35 arranged at the second longitudinal end of the second part 20b, and a drive chain 36 wound around the driving pinion 35 and the driven pinion. In this way, the drive chain 36 comprises an upper strand 37a extending longitudinally above the rail 19, parallel to the left rail 19, and a lower strand 37b extending parallel to the lower strand 37a under the left rail 19 .

It is noted that the driven pinion is thus carried by the tipper body 3 while the driving pinion 35 is carried by the door 6.

Symmetrically, on the right side, the actuating means comprise a driven pinion arranged at a first longitudinal end of the first part, a driving pinion arranged at the second longitudinal end of the second part, and a coiled drive chain around the drive gear and the driven gear. In this way, the drive chain comprises an upper strand extending longitudinally above the rail, parallel to said rail, and a lower strand extending parallel to the upper strand under the rail. It is also noted that the driven pinion is thus carried by the tipper body 3 while the driving pinion is carried by the door 6.

Furthermore, each upper strand 37a is surrounded on the outside by the arches 14 and on the inside by the side of the bucket 1 on the associated side. On the other hand, none of the lower strands 37b is framed on the outside by the arches 14.

In particular, only the rear hoop 14' (i.e. the hoop closest to the rear of the bucket 1) is secured to the drive chains 36 via its two carriages 17.

Furthermore, the actuating means here comprise at least one link 38 connecting all the hoops 14 to each other. Preferably, the actuating means comprise at least two links 38 each connecting all the hoops 14 to each other, the two links 38 being identical.

Typically the actuating means comprise a right link connecting all the right sides of the hoops 14 to each other and a left link 38 connecting all the left sides of the hoops 14 to each other.

The right link and the left link 38 are identical and are for example a belt or a chain.

The straight link is attached here to all the straight carriages.

In service, when the two parts of the straight rail are aligned and the roof is unfolded, the straight link thus extends longitudinally parallel to the X axis and to the straight rail. Thus the straight link extends along the straight rail at the level of said rail. Typically the straight link extends along the rail in the middle of said rail.

The straight link is thus arranged between the upper strand and the lower strand. As for the straight rail, it is framed by the upper section and the lower section on the one hand and by the straight link and the right side of the tipper body or the door on the other.

Symmetrically the left link 38 is here secured to all the carriages 17 left.

In service, when the two parts 20a, 20b are aligned and the roof 9 is unfolded, the left link 38 thus extends longitudinally parallel to the axis X and to the left rail 19. Thus the left link 38 extends along the along the left rail 19 at said left rail 19. Typically the left link 38 extends along the left rail 19 in the middle of said rail.

The left link 38 is thus arranged between the upper strand 37a and the lower strand 37b. As for the left rail 19, it is framed by the upper strand 37a and the lower strand 37b on the one hand and by the left link 38 and the left side 4 of the skip body 3 and the left side 8 of the door 6 of somewhere else.

The actuating means also comprise a single motor (not visible here) for driving the two driving pinions 35 in rotation, the motor being for example arranged on the left side 4 of the bucket body 3. The motor here drives the left driving pinion 35 by a belt: the two driving pinions being integral in rotation by a common axis carrying the two driving pinions, the rotation of the left driving pinion 35 therefore causes a corresponding rotation of the right driving pinion. This ensures synchronization of the two sets of right and left chain pinion actuations.

Thus in service, when the motor is actuated, it rotates the two driving sprockets 35 which in turn drive the two drive chains 36. The rear arch 14' is then driven in translation in the direction of the door 6 and from the rear end of the tipper body 3. Due to the relative movement between the rear hoop 14' and the hoop 14 which is juxtaposed thereto, the right link portion connecting the two carriages 17 considered and the left link portion 38 connecting the two carriages 17 considered will gradually stretch: once stretched, the traction exerted will then also cause the sliding of the juxtaposed hoop. This will then cause tension again in the following portions of links 38 which will eventually cause the sliding of the arch 14 which follows and so on.

A progressive deployment of the roof 9 is therefore provoked.

To fold it, it suffices to reverse the direction of rotation of the driving pinions 35 which causes a translation of the rear hoop 14' in the direction of the front of the tipper body 3. The rear hoop 14' will end up come up against the juxtaposed hoop and will therefore push the juxtaposed hoop in the direction of the front of the tipper body 3, juxtaposed hoop which in turn ends up hitting the next hoop and so on.

This causes a gradual folding of the roof 9.

Advantageously, it thus turns out to be possible to swing the door 6 into the open position even when the roof 9 partially or totally covers the door 6 thanks to the possible temporary separation of the two parts 20a, 20b of each rail 19.

On the other hand, when the door 6 is no longer in the closed position, the two parts 20a, 20b of each rail 19 are no longer aligned. In addition, the drive chains 36 connecting the driving and driven sprockets 35 are no longer stretched because the driving and driven sprockets 35 are carried respectively by the door 6 and the bucket body 3. Consequently, if the door 6 n is not in the closed position, it is not possible to ask to unfold or fold the roof 9.

In order to ensure good sliding of the carriages 17 in the rails 19, despite the fact that the parts of the rails 20a, 20b unite and separate regularly, at least one of the rails comprises means for guiding the relative movement between its two rail parts 20a, 20b (i.e. in the present case means for guiding the rotation of the second part 20b relative to the first part 20a along the axis A). In the present case, each of the two rails 19 comprises means for guiding the relative movement between the two parts 20a, 20b relating to it, guiding means which are identical to each other. We will now describe the left guide means, it being understood that the following description also applies to the right guide means.

Referring to Figure 3, the guide means comprise at least one guide carried by the first part 20a. In the present case, the guide means comprise an upper guide 41 associated with the upper strand 37a and a lower guide 42 associated with the lower strand 37b, the lower guide 42 and the upper guide 41 both being carried by the first part 20a.

Furthermore, each guide 41, 42 comprises a portion 43, 44 around which the associated strand wraps when the door 6 is opened.

Consequently, the guides 41, 42 allow the drive chain 36 to maintain the same level of tension regardless of the relative position of the door 6 vis-à-vis the skip body 3.

Thus, the upper guide 41 and the lower guide 42 make it possible to accompany the rotation of the upper strand 37a and of the lower strand 37b, which facilitates the indexing of the two rail parts 20a, 20b between them when the door 6 closes. In particular, the guides 41, 42 act as a tensioner roller for the drive chain 36.

The upper guide 41 and the lower guide 42 are here both carried by the second longitudinal end of the first part 20a.

In this way the two guides 41, 42 are arranged at the level of the junction zone between the two rail parts 20a, 20b when the door is in the closed position i.e. at the level of the Y axis.

The two guides 41, 42 thus compensate for the modification of the length of the drive chain 36 during a relative movement between the door 6 and the skip body 3.

In particular, the two guides 41, 42 are arranged so that the portion 43 of the upper guide 41 is above the axis A and the portion 44 of the lower guide 42 below the said axis A. The portions 43 , 44 are thus arranged as close as possible to the pivoting of the two rail parts 20a, 20b between them with a portion 43 above the corresponding pivot axis A and the other portion 44 below.

In particular, the portion 44 of the lower guide 42 is arranged so as to form a hinge axis B for the lower strand 37b parallel to the axis A and at the same level as the axis A in the direction of the length of the bucket 1 (i.e. along the X axis). The portion 43 of the upper guide 41 is arranged so as to form an articulation axis C for the upper strand 37a which is parallel to the axis A and in front of said axis A in the direction of the length of the bucket (i.e. along the axis).

According to a particular embodiment, the lower guide 42 comprises a fixing plate 46 to the first part 20a, fixing plate 46 extending vertically in the direction of the ground. The portion 44, around which the lower strand 37b wraps when the door 6 is opened, extends normal to said fixing plate 46 towards the outside of the skip body 3 and at the level of a lower end of said fixing plate 46. Portion 44 comprises, for example, a horizontal slat 40 extended at each of its ends by two wings rising in the direction of roof 9.

Preferably, the lower guide 42 comprises a pin 47 provided with two legs 49 each fixed to the slat 40 as well as a bridge 48 connecting the two legs 49. Typically the two legs 49 extend parallel to each other and to the Z axis and extend normal to the slat 40 in the direction of the ground. The two legs 49 thus extend vertically while being separated from each other (difference considered along the Y axis). The bridge 48 extends horizontally between the two legs 49 and therefore extends parallel to the Y axis.

In this way the pin 47 forms with the lamella 40 a closed frame through which the lower strand 37b extends. In particular, the lower strand 37b is thus framed on the right and on the left by the two legs 49, above by the slat 40 and below by the bridge 48. This ensures that the lower strand 37b remains in position during movements. relative between the two parts 20a, 20b and the door opening 6.

According to a particular embodiment, the upper guide 41 comprises a fixing plate 50 to the first part 20a, fixing plate 50 extending vertically in the direction of the roof 9. The portion 43, around which the drive chain 36 when the door 6 is opened, extends normal to said fixing plate 50 towards the outside of the skip body 3 at the level of an upper end of said fixing plate 50. The portion 43 comprises for example an attachment flank to the fixing plate 50, an outer flank parallel to said attachment flank, a slat extending horizontally between the two flanks so as to form a bottom of said portion, the slat being extended at its rear end by a wing rising towards the roof, wing also extending between the two sides.

Preferably, the upper guide 41 includes a tongue 51 mounted on the portion 43. Typically the tongue 51 is carried by the outer side of said portion 43. In the rest position the tongue 51 thus extends vertically from the outer side in the direction of the floor. In this way the tab 51 forms with the lower face of the lamella an open frame through which the upper strand 37a extends. In particular, the upper strand 37a is thus framed on the right and on the left by the fixing plate 50 and the tab 51 and above by the lamella. Furthermore, the upper strand 37a is framed below by the rail 19 directly. This ensures that said strand 37a remains in position during relative movements between the two parts 20a, 20b.

Preferably, the tab 51 is pivotally mounted on the outer side around an axis parallel to the Y axis, an axis which here coincides with the C axis. In this way, if a hoop 14 sliding along the rail 19 comes level with the tab 51, the latter can pivot in order to disappear during the time that the hoop 14 spends at its level. The tab 51 thus forms a pawl that does not hinder the passage of the hoops 14 along the rail 19 while maintaining the upper strand 37a under the portion 43.

Of course, the invention is not limited to the embodiment described and variant embodiments can be added thereto without departing from the scope of the invention.

In particular, although here the tipper is a trailer, the tipper may be of another type. For example, the tipper may itself be motorized and, for example, be a dump truck.

Although here the drive of the roof is motorized, said drive may be manual. We can thus have the same means of actuation as those described by having a crank in place of the motor: it is directly the user by turning the crank that can drive the roof.

The training sets may be different from what has been described. Thus, although here the drive assemblies are pinion-chain assemblies, the assemblies may include wheels other than sprockets (such as pulleys, etc.) and other drive links than chains (such as belts, cables, straps, etc.)

Although here the first rail part extends partly along the door, the first rail part may only extend along the tipper body. Similarly, although here the second part of the rail extends only along the door, the second part of the rail may extend partly along the tipper body.

Although here the two rail parts include indexing means, the two rail parts may not include such means. Otherwise, it is possible to have indexing means different from those indicated and for example snap-fastening means in place of the interlocking means described.

Furthermore, although the first part and the second part of the rail is of a single section, it is possible to have the first part and/or the second part in at least two sections, preferably rigidly fixed together.

At least one of the parts of a rail can be rigidly fixed to the element of the tipper carrying it (tipper body or door) in place of a connection via an adjustment support. If the part is in at least two sections, it is possible to have one of the sections rigidly fixed to the bucket element and the other mounted on said element by at least one adjustment support. The support(s) may allow relative movements different from what has been indicated and for example a relative movement between the part of the rail and the element carrying it along an axis parallel to the Y axis.

The guides may be different from what has been indicated and for example be fixed to the tipper body and not to the first part of the rail.

The roof may be different from what has been indicated. Thus, although here the roof can be equipped with blade and/or membrane as means for tensioning the tarpaulin, the roof may not have such means or the means may be different from those described.

For example, as illustrated in FIG. 8, the tarpaulin tensioning means may comprise at least one tensioning link 61a (such as a cable, a strap, a belt) connected at a first end to the rear hoop 14' and at another end to a drum 60 of the means for tensioning the tarpaulin, drum 60 connected in rotation to the driven sprockets of the first longitudinal ends of the first parts 20a. Such a drum 60 is for example arranged at the front of the tipper body 3 and carried by a shaft 62 which also carries the two driven pulleys. In this way the shaft 62 like the drum 60 extend along an axis T which is here substantially parallel to the axis Y', the drum 60 being arranged between the two driven pulleys. The diameter of the drum 60 is shaped so as to maintain the tensioning link 61a at constant tension.

The tensioning link 61a is therefore not secured to any hoops 14 other than the last hoops 14'.

Said tensioning link 61a is for example arranged so as to be secured to the center of the last hoop 14' and to the center of the drum 60 (along the axis T). The tensioning link 61a thus extends substantially in the center of the roof 9 but under the tarpaulin.

Preferably, the tarpaulin tensioning means comprise three tensioning links 61a, 61b, 61c (such as a cable, a strap, a strap) each linked at a first end to the rear hoop 14' and at a second end to the drum 60. The diameter of the drum 60 is shaped so as to maintain the tensioning links 61a, 61b, 61c at constant tension.

The tensioning links 61a, 61b, 61c are therefore not secured to other arches 14 than the last arch 14'. Optionally, a first of the three links 61a extends substantially in the center of the arches, a second of the three links 61b extends between the right lateral ends of the arches and a third of the three links 61c extends between the left lateral ends of the arches . The various links 61a, 61b, 61c also extend under the tarpaulin.

When the roof unfolds (or folds up) over a certain length, the shaft 62 turns and therefore the drum 60 also: this causes the unwinding (or winding up) of a length of tensioning links 61a, 61b , 61c identical to the unfolded (or folded) roof length. The tensioning links 61a, 61b, 61c are thus stretched at the same time as the roof 9 does not unfold or fold up, which prevents the tarpaulin from rubbing against the skip body 3. This facilitates the folding and the deployment of the tarp. Advantageously, the wear of the tarpaulin is also limited. In addition, the risk of the tarpaulin presenting areas of water retention in the event of rain is limited.

Claims (16)

Dumpster comprising a chassis, a dumpster body (3) mounted on the chassis, a door (6) pivotally mounted on the dumpster body to temporarily close an open end thereof, as well as a foldable roof (9) mounted sliding on at least one rail (19) of the skip, the rail comprising a first part (20a) carried by one of the sides of the skip body and a second part (20b) carried by a corresponding side of the door, the two parts being thus aligned when the door obstructs the open end of the skip body but separated when the door allows access to the interior of the skip body. Tipper according to Claim 1, in which the two parts (20a, 20b) are indexed one into the other when the door is in the closed position. Tipper according to Claim 2, in which one of the longitudinal ends of one of the parts comprises a portion fitting into a corresponding portion of a longitudinal end of the other of the parts. Bucket according to one of the preceding claims, in which at least one of the parts is mounted on the bucket via an adjustment bracket (21). Skip according to claim 4, in which the adjustment support (21) makes it possible to modify a relative position between the part and the skip along an axis parallel to a longitudinal axis (X) along which the skip body extends. Bucket according to Claim 4, in which the adjustment support (21) makes it possible to modify a relative position between the rail part and the bucket (1) along an axis parallel to a transverse axis (Y) along which the door extends between two side walls of the dumpster. Bucket according to one of the preceding claims, in which a junction between the two parts (20a, 20b) is located at the level of the pivot zone of the door (6) relative to the bucket body (3). Skip according to one of the preceding claims, in which the roof (9) comprises arches carrying a tarpaulin, the arches (14) being provided with carriages (17) sliding along the rail, the skip further comprising means for actuation of the roof using at least one drive assembly cooperating with the carriages to unfold or fold the roof, the bucket comprising means for guiding a link of the actuation assembly during the pivoting of the door relative to the tipper body. Tipper according to Claim 8, in which the guide means comprise at least one guide (41, 42) comprising a portion (43, 44) around which the link of the drive assembly is wound during the pivoting of the door relative to the tipper body. Bucket according to Claim 9, in which the portion (43, 44) forms a pivot axis (B, C) for the link of the drive assembly at the level of the junction zone between the two parts of the rail. Bucket according to Claim 9 or Claim 10, in which the guide means comprise an upper guide (41) comprising an upper portion (43) around which is wound an upper strand (37a) of the link of the assembly of drive during pivoting of the door relative to the bucket body and a lower guide (42) comprising a lower portion (44) around which a lower strand (37b) of the link of the drive assembly is wound during pivoting of the door relative to the tipper body. Bucket according to claim 11, in which the lower guide (42) comprises a pin (47) making it possible to form with the lower portion a closed frame through which the lower strand extends. Tipper according to Claim 11 or Claim 12, in which the upper guide (41) comprises a tab (51) making it possible to encircle the upper strand with the upper portion and the first part of the rail. Tipper according to one of the preceding claims, comprising means for tensioning a tarpaulin of the roof. Tipper according to Claim 14, in which the roof (9) comprises arches (14) carrying the tarpaulin as well as at least one blade (5a) extending between two consecutive arches while being fixed at each of its ends to the said arches. Tipper according to Claim 15, in which the roof (9) also includes a membrane (10) carried by the blade.