Leveling device for construction equipment and assembly of construction equipment carrying such a device

Abstract

The invention relates to a leveling device for construction equipment (30). The device comprises a frame (31) having a main blade (20) with a lower end configured to level a surface by its lower end. It is notable in that the main blade (20) is mounted on the frame (31) by at least two movable supports (21) in vertical translation. On each side of the main blade (20) is positioned a skid (22). Each skid (22) is configured to be in contact with the ground. Each skid (22) is height-adjustable relative to the main blade (20). Figure for the abstract: Fig. 1

Description

Title of the invention: Leveling device for construction equipment and assembly of a construction vehicle carrying such a device. Technical field of the invention

[0001] The present invention relates to a leveling device for construction equipment and to an assembly of construction equipment carrying such a device. It is particularly applicable to construction and public works. This type of device is used to prepare and level ground surfaces in the context of various construction, development, renovation, and maintenance operations.

[0002] Here are some specific examples of the application area of ​​a leveling device for construction equipment:

[0003] The leveling device is used to prepare surfaces before the application of asphalt, bituminous coatings, or other construction materials. It makes it possible to create flat, uniform, and high-quality surfaces, ensuring the safety and durability of road infrastructure.

[0004] In residential, commercial or industrial construction projects, the leveling device is used to prepare the land by leveling the areas where buildings will be erected, adjusting slopes and eliminating irregularities. It also serves as the finishing layer.

[0005] The leveling device is essential for earthworks, whether for the creation of construction platforms, the preparation of foundations or the development of storage areas.

[0006] In municipal infrastructure improvement projects, the leveling device is used to repair, renovate or create new roads, sidewalks, bike paths, trenches, and other urban developments.

[0007] In more complex projects such as the construction of airports, seaports or civil engineering projects, the leveling device is used to prepare landing surfaces, quays and other necessary facilities.

[0008] In addition to the initial construction, the leveling device is also used for the regular maintenance of existing infrastructure, by repairing damaged surfaces or restoring the flatness of roads and land. Previous technique

[0009] In the field of soil and road preparation prior to paving, it is widely recognized that manual work predominates. This approach is particularly common for narrow roads and lanes, as well as for hard-to-reach areas characterized by slopes and configurations complex topographic conditions. Traditional specialized machines prove cumbersome and unwieldy in these specific conditions, limiting their effectiveness.

[0010] Existing techniques essentially consist of manual methods involving the transport of materials using wheelbarrows or similar equipment, followed by approximate manual leveling. While common, these methods suffer from several major drawbacks. They are time-consuming, require a significant workforce, and lead to considerably longer construction times. These durations are often incompatible with changing weather conditions and the economic imperatives of project completion.

[0011] Due to the physically demanding nature of these tasks, operators quickly experience fatigue, leading to pervasive safety concerns. The often arduous working conditions can also make it difficult to recruit personnel for these positions, exacerbating the existing challenges on construction sites. Presentation of the invention

[0012] The present invention aims to remedy these drawbacks with a completely innovative approach.

[0013] More specifically, the invention aims to provide a multi-articulated leveling device adaptable to several types of road and several site configurations.

[0014] In particular, an objective of the invention is to provide such a technique which can be adapted to common carrier vehicles such as mini loaders or construction equipment while avoiding any complex adjustments.

[0015] These objectives, as well as others that will appear subsequently, are achieved, according to a first aspect, using a leveling device for construction equipment. The device comprises a frame having a main blade with a lower end configured to level a surface from its lower end. It is notable in that the main blade is mounted on the frame by at least two supports that move vertically. On each side of the main blade is positioned a skid. Each skid is configured to be in contact with the ground, and each skid is adjustable in height relative to the main blade.

[0016] Each skid is height-adjustable independently of the main blade, allowing the latter to move up or down relative to the base of the skids. The skids, thus positioned, serve as a reference for the leveling height. The weight of the device is then entirely distributed over the two skids, which have a shape that allows the device to remain on the ground and to contain the materials in front of and on the side of the main blade. A locking system using sliding pins in holes allows the frame to be locked in relation to the main blade if desired.

[0017] Thanks to these provisions, the leveling device makes it possible to adjust and level the materials in front of the machine in different site configurations.

[0018] In one embodiment, the base of each skid is positioned on the ground at the same height as, or lower than, the base of the leveling blade. In this configuration, the leveling blade allows for surface leveling or the spreading of a chosen thickness of material.

[0019] The leveling device handles slopes, meaning it can adjust the material level according to the terrain's incline. This is particularly useful for working on sloping ground and ensuring uniform leveling despite topographical variations.

[0020] In one embodiment, a caster is connected to the skate and is adjustable in height relative to the skate. Each skate has a caster that is adjustable in height relative to the base of the skate. This caster, positioned at a height lower than the base of the skate, allows the entire device to glide more easily and avoids marking the surface, for example, when it is made of asphalt or concrete.

[0021] In one embodiment, the adjustable height of each skate is independent of the height adjustment of the wheels.

[0022] The wheel rests on a curb located on one side of the device. This same curb serves as a level reference for the base of the leveling blade, which is located at a positive or negative height relative to the upper base of the curb.

[0023] According to one embodiment, the pads are positioned higher than the base of the leveling blade, which then allows a thickness of material to be removed. This thickness, and therefore this layer of material removed, corresponds to the difference in height between the lower base of the pads and the lower base of the leveling blade.

[0024] Thanks to these features, the leveling device allows for reduced construction times. The mechanization of operations significantly limits the need for tedious manual interventions, thus reducing the physical strain on operators. This improves their comfort and can also help attract and retain workers in a field where recruitment is often difficult.

[0025] In one embodiment, it includes a first lateral flap fixed on one side of the frame, the first lateral flap includes a first wear blade having a lower end and configured to level a surface by its lower end.

[0026] In one embodiment, the first lateral flap is movable in vertical translation relative to the main blade.

[0027] In one embodiment, the first lateral flap is movable in rotation with respect to a vertical axis of the main blade.

[0028] In one embodiment, the first lateral flap is movable in rotation with respect to a horizontal axis of the main blade.

[0029] In one embodiment, the first side panel includes a movable part in rectilinear translation configured to increase the width of the first side panel.

[0030] The first side panel comprises a main part and a sliding part (movable part). This first side panel has a first wear blade at its lower end configured to level a surface. The sliding part has a second wear blade at its lower end configured to level a surface.

[0031] In one embodiment, it comprises a second lateral flap fixed to the first lateral flap, the second lateral flap comprises a second wear blade having a lower end and configured to level a surface by its lower end, the second lateral flap is movable in rotation with respect to a vertical axis of the first lateral flap.

[0032] In one variant, the second flap is removable. It is held in place by pins and is easily removable.

[0033] In one embodiment, the device allows for leveling surfaces located on the side of the main blade. These same surfaces may have varying widths and inclinations, and may be located at negative or positive heights relative to the base of the skid located on the same side.

[0034] For example, we can level inside a trench, or we can level a surface located behind and lower than a curb on the side of the device. We can also level finishing layers on surfaces such as sidewalks, cycle paths, and road shoulders...

[0035] Thanks to these features, the leveling device allows for a significantly reduced construction time. The mechanization of leveling operations eliminates the need for time-consuming manual interventions, thus accelerating the surface preparation process.

[0036] By eliminating or significantly reducing manual and physically demanding tasks, the leveling device helps to reduce the physical strain on operators. This improves their comfort and can also help to attract and retain workers in an area experiencing a labor shortage.

[0037] In summary, the described leveling device offers advantages in terms of ease of use, precision, efficiency, reduction of construction time, quality of finishes and reduction of strain for operators.

[0038] Construction equipment includes, for example, a mini-loader, a wheel loader, a backhoe loader, a bulldozer, an excavator, an agricultural tractor, a dump truck with tipping bed, a compactor (steamroller) with leveling equipment, a scraper, a mini-excavator, a crane truck, a tracked excavator...

[0039] These construction machines can be adapted by integrating a leveling device to improve their ability to prepare and level ground surfaces. The addition of such a device can allow for more precise and faster execution of leveling operations, thus improving the overall efficiency of construction and public works projects.

[0040] The invention is advantageously implemented according to the embodiments and variants set out below, which are to be considered individually or according to any technically operative combination.

[0041] In one embodiment, the rotational mobility of the first lateral flap relative to the main blade is achieved by a first cylinder of the first lateral flap and the rotational mobility of the second lateral flap relative to the first lateral flap is achieved by a second cylinder of the second lateral flap.

[0042] Each translational or rotational movement is achieved by the action of a hydraulic cylinder. The vertical translational movement of the wheel relative to the skid is achieved manually by the action of a crank. All of these hydraulic functions are controlled by a control box with buttons located in the cab of the carrier vehicle.

[0043] In one embodiment, each movable support corresponds to axes, such as rods, fixed to the frame with respect to the main blade, each axis is housed in oblong through openings of the main blade.

[0044] In one embodiment, it further comprises a bucket shell mounted on the main blade, said bucket shell having an open position and a closed position.

[0045] The removable shell is attached to the main blade and positioned between the two skids. This shell consists of a main panel on the lower part, two side panels, and fastening and movement components. The entire device, thus equipped, allows for scraping, leveling, loading, transporting, and dumping materials. In the loading position (closed position) and during material transport, the sides are parallel to the skids and the bottom is perpendicular to the main blade. In the dumping position (open position), the sides remain parallel to the skids and the bottom becomes parallel to the main blade.

[0046] In one embodiment, it further comprises a rotating brush mounted on the main blade. The entire device thus equipped makes it possible to scrape, level, and sweep the surface located in front of the main blade.

[0047] According to a second aspect, the present invention relates to an assembly of a construction machine carrying such a device.

[0048] The advantages, purposes and particular characteristics of this assembly being similar to those of the leveling device which is the subject of the present invention, they are not recalled here. Brief description of the figures

[0049] Other advantages, purposes and features of the present invention will become apparent from the following description, given for explanatory purposes only and not as a limitation, with reference to the accompanying drawings, in which:

[0050] Fig. 1 represents a perspective view with a construction machine and a leveling device according to an example of an embodiment of the present invention;

[0051] Fig. 2 represents a perspective and cross-sectional view of the leveling device;

[0052] Figure 3 shows a perspective view of the leveling device with the first side panel and the second side panel in a position;

[0053] Fig. 4 represents a perspective view of the leveling device with the first side flap and the second side flap in another position;

[0054] Fig. 5 represents another perspective view of the leveling device with the first lateral flap and the second lateral flap;

[0055] Fig. 6 represents another perspective view of the leveling device with the first lateral flap and the second lateral flap;

[0056] Fig. 7 represents a view where the inside of the leveling device's pad is visible;

[0057] Fig. 8 represents a perspective view of the leveling device with a positive offset and with the second element of the first flap in the open position;

[0058] Fig. 9 represents a rear view of the leveling device with the second element of the first flap in the open position;

[0059] Fig. 10 represents a perspective view of the leveling device with a negative offset;

[0060] Fig. 11 represents a construction machine with the leveling device and a brush;

[0061] Fig. 12 represents the entire device equipped with the shell in the closed position.

[0062] Fig. 13 represents the entire device equipped with the shell in the open position.

[0063] In the description and claims, to clarify the description and claims, the longitudinal, transverse and vertical terminology will be adopted without limitation with reference to the conventional X, Y, Z trihedron. Description of the implementation methods

[0064] Fig. 1 shows a perspective view with a construction vehicle 30 and a leveling device.

[0065] The frame 31 serves as a solid base for the operation of the leveling device and includes a separate main blade 20. This main blade 20 has a specially configured lower end and constitutes the central element responsible for leveling the surface. The main blade 20 is designed so that it can be positioned in such a way that its lower end can be in direct contact with the surface to be leveled.

[0066] This embodiment is distinguished by the use of two movable supports mounted on either side of the main blade 20. These movable supports are designed to allow vertical translational movement. They ensure stabilization and precise guidance of the main blade 20 when it is in operation. This movable support design provides optimal flexibility to the device, allowing height adjustment of the main blade 20 to adapt to different terrain conditions and specific leveling requirements.

[0067] Each side of the main blade 20 is equipped with a skid 22. These skids 22, configured to be in direct contact with the ground, play an essential role in maintaining the stability of the device during the leveling process. Each skid 22 is designed to be height-adjustable relative to the main blade 20. This adjustment mechanism allows for precise control of the distance between the skids 22 and the main blade 20, thus ensuring uniform leveling even on uneven surfaces.

[0068] The design of the main blade 20 is perfectly aligned with the requirements of the leveling device and the construction equipment 30 for which it is intended. It incorporates secure fastening mechanisms and suitable articulation points to ensure a stable connection with the construction equipment 30, thus enabling precise and efficient handling during leveling operations.

[0069] In this embodiment, the main blade 20 has a special geometry that allows for optimal contact with the surface to be leveled. This geometry is designed to minimize the effects of wear and abrasion while ensuring uniform and precise leveling. Furthermore, the blade design incorporates adjustment features that allow the depth and angle of the blade to be adjusted according to specific leveling requirements.

[0070] The main blade 20 is provided with a lower end having an interchangeable part, specially designed to cope with the wear inherent in repeated leveling operations.

[0071] The main blade 20 of the device is carefully designed to accommodate this interchangeable part. This part is positioned at the lower end of the main blade 20, which is subject to increased wear due to its direct contact with the surface of the ground to be leveled. The design allows this part to be changed without requiring major modifications to the main blade 20.

[0072] The interchangeable part is made from wear- and abrasion-resistant materials, suitable for the rigors of construction sites. It can be configured as easily replaceable parts, such as wear plates or specific tips. This modular design allows the operator to remove the worn part and replace it with a new one without having to replace the entire main blade 20.

[0073] The implementation of this interchangeable part provides the device with several significant advantages. It extends the service life of the main blade 20 by specifically targeting the areas most prone to wear. Furthermore, it reduces maintenance costs by avoiding frequent replacement of the entire blade.

[0074] Fig. 2 shows a perspective and cross-sectional view of the leveling device.

[0075] The main blade 20 is mounted on the frame 31 by at least two movable supports 21 in vertical translation. The main blade 20 is floating relative to the ground.

[0076] Each movable support 21 corresponds to axes fixed to the frame with respect to the main blade 20. The axes are housed in straight guides of the frame. In this example, the straight guides are oblong through-holes.

[0077] In one variant, there are two movable supports 21 on each side of the main blade 20.

[0078] In another variant shown in the figures below, the two movable supports 21 are doubled on each side. In this case, on each side, there is a movable support 21 one below the other.

[0079] In one embodiment, an axle is inserted behind the main blade and allows the movable support 21 to be locked. According to this example, the axle is inserted inside straight guides of the frame 31.

[0080] This figure shows a wheel 23, which is mounted adjustable in height relative to the skate and the main blade 20. The wheel 23 is inside the skate 22.

[0081] This wheel 23 gives the device substantial advantages in terms of leveling accuracy and adaptability to varying terrain conditions.

[0082] In this embodiment, each skate 22 of the device is equipped with a wheel 23. This wheel 23 is carefully connected to the skate 22 by a slide, thus allowing an adjustable degree of freedom.

[0083] The ability to adjust the height of each wheel 23 relative to the skid 22 and the main blade 20 optimizes surface leveling. This height adjustment mechanism offers unprecedented flexibility, allowing the operator to adjust the position of the wheel 23 according to the specific characteristics of the terrain and leveling requirements.

[0084] The height-adjustable skid 22 and wheel 23 offer several important advantages. They ensure optimal contact with the ground, regardless of the topography and terrain. This guarantees uniform, high-quality leveling, even on uneven surfaces. The ability to adjust the height of each skid 22 and wheel 23 also provides great adaptability, allowing the device to be quickly adjusted to variations in terrain and required leveling specifications.

[0085] Naturally, the invention is described above by way of example. It is understood that a person skilled in the art is able to carry out different embodiments of the invention without departing from the scope of the invention.

[0086] Figures 3 and 4 show two perspective views of the leveling device with the first lateral flap 24 and the second lateral flap 25.

[0087] This embodiment highlights the installation of two distinct lateral flaps: the first lateral flap 24 and the second lateral flap 25. Each lateral flap is designed for independent rotation around a specific vertical axis, thus contributing to the extension of the total width of the main blade 20 and to the optimization of the leveling process.

[0088] The first side flap 24 is designed to be movable in rotation about a vertical axis of the main blade 20. This first side flap 24 is positioned to allow lateral extension of the main blade 20, thus increasing the effective width of the leveling device. This independent rotation of the first side flap 24 allows the width of the device to be quickly adapted to the specific leveling requirements and the dimensions of the work area.

[0089] The second side flap 25 is also designed to be movable in rotation about a vertical axis, but this time, this axis is located on the first side flap 24. This mechanism allows the second side flap 25 to rotate around the first side flap 24, thus offering even greater flexibility in adjusting the width of the leveling device. The rotation of the second side flap 25 helps to optimize the lateral coverage of the main blade 20, thereby adapting the device to specific terrain conditions and leveling requirements.

[0090] When the two side flaps are positioned in a certain configuration, they help to extend the width of the main blade 20, thus creating a wider and more efficient leveling surface. This innovative design makes it possible to achieve faster and more precise leveling, while minimizing the number of passes required over the surface to be treated.

[0091] Each rotation is possible from an angle of 0 to 90°. The angle of the second flap relative to the first flap is between 0 and 150°.

[0092] Figures 5 and 6 show another perspective view of the leveling device with the first side flap 24 and the second side flap 25.

[0093] This embodiment highlights the use of rotating movable side flaps, each controlled by a double-acting hydraulic cylinder, thus allowing precise adjustment of the leveling configuration.

[0094] The leveling device includes a first lateral flap 24 which is capable of rotating around a vertical axis of a first double-acting hydraulic cylinder 26. This hydraulic cylinder controls the rotation of the first lateral flap 24, thus allowing for rapid adjustment of the working width of the main blade 20 according to the specific needs of the worksite.

[0095] Next, the second lateral flap 25 is positioned to be mobile in rotation relative to a vertical axis located on the first lateral flap 24. This movement is made possible by means of a second double-acting hydraulic cylinder 27 of the second lateral flap 25. This second hydraulic cylinder 27 allows adjustment of the angle and position of the second lateral flap 25, which contributes to optimal lateral coverage and precise adaptation to the characteristics of the terrain.

[0096] The use of double-acting hydraulic cylinders to control the side flaps offers several advantages. It allows for precise and independent control of each side flap, facilitating real-time adjustments based on site conditions. Furthermore, the hydraulic technology ensures a rapid response and smooth operation of the side flaps, thus improving overall leveling efficiency.

[0097] Figure 7 shows a view where the inside of the leveling device's pad is visible.

[0098] A through hole is visible, allowing the wheel to pass through. The wheel is fixed to the pad and adjustable in height relative to it.

[0099] Figures 8 and 9 show a perspective view and a rear view of the leveling device.

[0100] In [Fig. 8] or [Fig. 9], the sliding portion of the first side panel 24 is visible. This sliding portion increases the width of the first side panel 24. The entire first side panel consists of a first panel 24a and a first element 24b. In one example, the sliding portion is substantially equal to the width of the first side panel 24.

[0101] It is also visible on [Fig.8] that the first lateral flap has descended relative to the principle blade 20, this shows the great flexibility of inclination and sliding of the different parts.

[0102] Each of the first side flap 24 or the second side flap 25 is designed to provide a positive or negative offset, which allows the horizontal position of the leveling device to be adjusted.

[0103] Fig. 10 shows a perspective view of the leveling device with a negative offset.

[0104] The first side flap 24 is designed to allow for positive or negative offset. This means that it can be moved laterally relative to the main blade 20, either outwards at a positive angle (positive offset) of approximately 12°, or at a negative angle (negative offset) of approximately 12°. This lateral movement of the first side flap 24 allows the horizontal position of the leveling device relative to the construction equipment to be adjusted, thus providing adaptability to ground conditions and specific leveling requirements.

[0105] Similarly, the second side flap 25 is also designed to allow for positive or negative offset. It can be moved laterally relative to the first side flap 24, thus providing an additional possibility for horizontal adjustment of the device. This feature makes it possible to maximize the lateral coverage of the leveling device and to achieve more precise leveling over a larger area.

[0106] By combining the positive and negative offsets of the two lateral flaps, the leveling device can be positioned to reach areas that are difficult to access or to adapt to variations in the topography of the terrain.

[0107] Fig. 11 shows a construction machine with a leveling device and a rotating brush.

[0108] In one embodiment of the invention, the leveling device comprises a rotating brush 28 or an articulated sweeper. This sweeper is mounted on the main blade by means of two axes fixed in an upper position, allowing multidirectional sweeping movement.

[0109] A skate 22 is visible and the second flap 25 is folded down.

[0110] The addition of the articulated sweeper on the main blade facilitates quick and efficient site cleanup. Thanks to its articulated design, the sweeper can adapt precisely and flexibly to uneven terrain.

[0111] In the same way as the main blade, the sweeper follows the contours of the terrain, thus ensuring thorough cleaning even in areas where the topography is irregular.

[0112] The leveling device, in this embodiment, therefore offers a significant advantage in terms of site cleanup. It makes it possible to keep work areas clean and clear, while considerably reducing the time required for cleaning. The increased efficiency resulting from the use of the articulated sweeper helps to improve the overall efficiency of the work process on the construction site.

[0113] In an alternative, not shown, a horizontal arm with a vertically adjustable free-rotating wheel is attached to the main blade. This device provides an additional reference and leveling support.

[0114] Figures 12 and 13 represent the entire device equipped with the shell in the closed and open positions.

[0115] Part of the hull is open in pivot connection with the main blade and actuated by a cylinder fixed to the main blade 20.

[0116] In one embodiment, the leveling device has the main blade equipped with a portion similar to a bucket shell 29, specially designed for transporting materials. This portion, incorporated into the main blade, provides additional functionality to the device, thus enabling efficient and practical handling of materials on the construction site.

[0117] The addition of this bucket shell-type part 29 brings significant advantages to the surface preparation and construction work process. This feature allows materials to be delivered to the areas where they are needed very quickly. The operator can load the bucket shell part 29 with the appropriate materials and transport them directly to the areas to be treated. This approach considerably reduces the time required to supply the necessary materials, thus increasing the efficiency of operations.

[0118] Furthermore, this same bucket-type portion 29 also allows for the efficient removal of excess materials. When there is excess material in certain areas, the operator can load it into the bucket-type portion 29 and quickly remove it from the site, thus avoiding unnecessary accumulations and helping to maintain order and cleanliness.

[0119] The combination of the main blade with this bucket-type portion 29 gives the device increased versatility and utility on the job site. By providing a practical and quick method for transporting materials, this feature improves productivity while reducing potential delays related to the availability of the necessary materials.

[0120] It is emphasized that all features, as they are apparent to a person skilled in the art from this description, the drawings and the accompanying claims, even if specifically described only in relation to other specific features, both individually and in any combinations, may be combined with other features or groups of features disclosed herein, insofar as this has not been expressly excluded or that technical circumstances make such combinations impossible or meaningless.

[0121] List of reference signs [Tables 1] References Designations 20 Main blade 21 Moving support 22 Skid 23 Wheel 24 First side flap 24a First flap 24b Moving part 25 Second side flap 26 First side flap cylinder 27 Second side flap cylinder 28 Rotary brush 29 Bucket shell 30 Construction equipment 31 Frame

Claims

Demands

1. Leveling device for construction equipment (30), the device comprises a frame (31) having a main blade (20) having a lower end and configured to level a surface by its lower end, characterized in that the main blade (20) is mounted on the frame (31) by at least two movable supports (21) in vertical translation, on each side of the main blade (20) is positioned a pad (22), each pad (22) is configured to be in contact with the ground;Each skate (22) is height-adjustable relative to the main blade (20), a first side flap (24) fixed to one side of the frame (31), the first side flap (24) has a first wear blade having a lower end and configured to level a surface by its lower end, a second side flap (25) fixed to the first side flap (24), the second side flap (25) has a second wear blade having a lower end and configured to level a surface by its lower end, the second side flap (25) is rotationally movable relative to a vertical axis of the first side flap (24).

2. Device according to claim 1, in which a wheel (23) is connected to the skate (22) and adjustable in height relative to the skate (22).

3. Device according to claim 2, wherein the adjustable height of each skate (22) is independent of the height adjustment of the wheels (23).

4. Device according to claim 1, wherein the first lateral flap (24) is movable in vertical translation relative to a vertical axis of the main blade (20).

5. Device according to claim 1, wherein the first lateral flap (24) is movable in rotation with respect to a vertical axis of main blade (20).

6. Device according to claim 1, wherein the first lateral flap (24) is rotationally movable with respect to a horizontal axis of the main blade (20).

7. Device according to claim 1, wherein the first side flap (24) has a movable part (24b) in rectilinear translation configured to increase the width of the first side flap (24).

8. Device according to claim 1, wherein the rotational mobility of the first lateral flap (24) relative to the main blade (20) is

9.

10.

11.

12. the rotational mobility of the second lateral flap (25) relative to the first lateral flap (24) is achieved by a first cylinder (26) of the first lateral flap (24) and the rotational mobility of the second lateral flap (25) relative to the first lateral flap (24) is achieved by a second cylinder (27) of the second lateral flap (25). Device according to claim 1, wherein each movable support (21) corresponds to axes, such as rods, fixed to the frame (31) with respect to the main blade (20), each axis is housed in oblong through openings of the main blade (20). A device according to claim 1, wherein it further comprises a bucket shell (29) mounted on the main blade, said bucket shell (29) having an open position and a closed position. A device according to claim 1, wherein it further comprises a rotating brush (28) mounted on the main blade. Assembly of a construction machine (30) carrying a device according to one of the preceding claims.

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