Platform vehicle movable between a loading position and a transport position.

Abstract

Vehicle (1) comprising wheels (10) connected to a structure (11), two fixed rails (13) extending in a longitudinal direction (X), a platform (2) capable of receiving loads (3), movable relative to the structure (10) by sliding along the fixed rails (13) via sliding plates (21, 22) cooperating with said fixed rails (13), between a transport position between the wheels (10), and a loading position in which said platform (2) rests on the ground (S). The fixed rails (13) each comprise a middle segment arranged above one of the wheels (10), a rear segment arranged in a rear extension of the middle segment and forming a downward slope from the middle segment and a front segment arranged in a front extension of the middle segment and forming a downward slope from the middle segment. Figure for the abstract: Fig. 1

Description

Title of the invention: Vehicle with a platform movable between a loading position and a transport position.

[0001] The invention relates to a vehicle comprising a platform movable between a loading position located on the ground and a transport position allowing the vehicle to move the load.

[0002] It is known to produce vehicles comprising a platform that is movable between a transport position in which the platform is arranged on the vehicle between the wheels of the vehicle, and a loading position in which the platform has slid out of the vehicle, onto the ground. The transport position makes it possible to move the platform with its load without touching the ground by moving the vehicle. The loading position makes it possible to load loads onto the platform, or to unload them, by providing a loading surface close to the ground.

[0003] For example, document EP0299006 describes a trailer comprising a structure on which two wheels are fixed, the wheels being on each side of the structure. A platform moves between a position in which it is on the structure, between the wheels of the trailer, and a loading position in which the platform is on the ground, in longitudinal alignment with the trailer. The trailer comprises two straight rails, extending longitudinally of the trailer in the space between the wheels, on which the platform slides. To move from the transport position to the loading position, the structure of the trailer tilts so that one of its ends touches the ground, allowing the platform to be easily moved between the loading position and the transport position.

[0004] The disadvantage of such a solution is that the width of the loading platform is reduced because the rails on which the platform slides are between the wheels. In addition, if the loads protrude from the platform laterally, they risk being blocked by the presence of the wheels.

[0005] The objective of the invention is to overcome these drawbacks. In particular, one of the aims of the invention is to propose a vehicle allowing the use of a movable platform which can be in the space between the wheels when it is on the vehicle in the transport position, while offering a significant width.

[0006] This object is achieved according to the invention, thanks to a vehicle comprising wheels connected to a structure, arranged parallel and spaced apart from each other in a direction transverse to the vehicle, allowing movement of said vehicle in a direction longitudinal to the vehicle, two fixed sliding rails spaced apart from each other in the transverse direction and fixed to the structure, the rails extending in a longitudinal general direction of the vehicle, a platform capable of receiving loads, the platform being movable relative to the structure by sliding at least in the longitudinal direction along the fixed rails, via sliding plates cooperating with the fixed rails, between a transport position in which the platform is on the vehicle, above the structure and between the wheels, and a loading position in which said platform rests on the ground outside the structure, in the extension of said structure in the longitudinal direction, the vehicle being remarkable in that the fixed rails each comprise a middle segment arranged above one of the wheels,a rear segment arranged in a rearward extension of the middle segment and forming a downward slope from the middle segment towards a rearward direction and a front segment arranged in a frontward extension of the middle segment and forming a downward slope from the middle segment in a frontward direction opposite to the rearward direction.

[0007] Thus advantageously, the tray can be very wide because the rails are above the wheels and not between the wheels, and the sliding makes it possible to pass above the wheels with sliding plates arranged laterally to the tray and not under the tray. In addition, this design makes it possible to have a tray lower than the middle segment when it is in the transport position by passing between the rails, in particular by placing the plates so as to cooperate respectively with the front segments and the rear segments when the tray is in this transport position, for example by placing the plates near the front and rear ends of the tray.Indeed, the front and rear segments being descended from the middle segment, in the transport position, the plates arranged at the front of the platform cooperate with the front segments and the plates arranged at the rear of the platform with the rear segments, in a position where they are lower than the middle segments. The platform is then lower than the middle segment. Finally, another advantage is that the height of the platform relative to the wheels can be adapted so that an object protruding laterally from the platform does not come into contact with the wheel by choosing an adequate spacing between the plates arranged at the front and the plates arranged at the rear of the platform.

[0008] In a particular embodiment of the invention, the fixed rails are curved with a center of curvature on the side of the ground on which the vehicle rests.

[0009] Thus advantageously, the curved shape allows a regular movement of the plate during its sliding, without a sudden change of direction due to the absence of an angle in the path of the fixed rails.

[0010] Alternatively, the radius of curvature of the fixed rails is an arc of a circle.

[0011] In another embodiment of the invention, the vehicle comprises two movable rails moving between a deployed position in which they are each in the extension of the fixed rails, arranged so as to form a ramp between the rear ends of the fixed rails and the ground, the tray sliding along these movable rails, and a stowed position in which they are outside the extension of the fixed rails.

[0012] Thus advantageously, the movable rails allow the platform to slide from its transport position to its loading position in which it is entirely on the ground, without having to modify the position of the structure and the fixed rails relative to the ground.

[0013] In another embodiment of the invention, each of the movable rails is fixed respectively via a rotational articulation to one of the rear ends of each of the fixed rails, the articulation being arranged so as to allow rotation along an axis parallel to the transverse direction, the movable rails passing from the deployed position to the stowed position by rotation around the articulation in the opposite direction from the ground.

[0014] Thus advantageously, the time required to move the platform between the loading position and the transport position is reduced, the only manipulation being to move the movable rails to the deployed position by rotation around the axis, the movable rails being placed in the extension of the fixed rails in this deployed position. In addition, the movement of the platform between its loading position on the ground and its transport position on the fixed rails is facilitated, the movable rails making it possible to guide the platform between its position on the ground and its position on the fixed rails.

[0015] In another embodiment of the invention, the movable rails are curved in the opposite direction to the fixed rails when said movable rails are in the deployed position. That is to say, in the deployed position, the center of curvature of each of the movable rails is oriented in the opposite direction to the ground.

[0016] This arrangement advantageously allows the tray to have a slight slope when it begins to slide on the movable rails from its loading position, and to gradually increase the slope without jolts until the tray slides on the fixed rails. For example, the movable rails are curved along an arc of a circle.

[0017] In another embodiment of the invention, the tray is rectangular in shape and comprises on each of its longitudinal edges two sliding plates, each sliding plate comprising a sliding wheel projecting from the longitudinal edge of the tray so as to cooperate with one of the fixed rails and / or associated movable rails when the tray moves between the transport position and the loading position, each sliding wheel projecting under the tray so as to roll on the ground when the tray is in the loading position.

[0018] Thus advantageously, the same sliding wheels allow the tray to slide on the fixed and mobile rails, as well as the movement of the tray on the ground when it approaches its loading position. The longitudinal edges are the edges of the tray extending in the longitudinal direction X of the vehicle when the tray is in the transport position.

[0019] In another embodiment of the invention, each sliding wheel is arranged near each of the ends of the longitudinal edges of the plate.

[0020] Thus advantageously, by placing the sliding wheels located on the same edge of the platform furthest from each other in the longitudinal direction, it is possible to lower the height of the platform relative to the ground when said platform is in the transport position. When heavy loads are placed on the platform, the lower position of the platform in the transport position makes it possible to obtain a low center of gravity of the vehicle with the loads on the platform.

[0021] In another embodiment of the invention, each of the sliding plates comprises a sliding interface, preferably in the form of a sliding wheel, cooperating with each of the fixed and / or movable rails so as to allow the plate to slide relative to said rails, and an adjustment device connecting each of the sliding interfaces to the plate, the adjustment device being capable of modifying the distance between the sliding interfaces and the plate at least in a direction perpendicular to the plate.

[0022] The direction perpendicular to the platform corresponds to the vertical direction when the platform is in the transport position on the vehicle.

[0023] Thus advantageously, the height of the platform relative to the fixed rails can be modified during movement between the loading position and the transport position, in particular when the loads placed on the platform extend laterally from the platform, i.e. in the transverse direction, in order to avoid any interference between these loads and the fixed and / or mobile rails.

[0024] Furthermore, when the tray is in the loading position, with sliding wheels in contact with the ground, the adjustment device allows the tray to be lowered as low as possible, such as until it is in contact with the ground, in order to allow loading of an object onto the tray, such as a vehicle, with the lowest possible height step between the face of the tray receiving the objects and the ground.

[0025] In another embodiment of the invention, each adjustment device comprises an oscillating arm each connecting one of the sliding interfaces to the plate, each of the arms pivoting around an axis of rotation parallel to the transverse direction of the vehicle, so as to modify the distance between the sliding interfaces and the plate in the vertical direction by rotation of said arms.

[0026] In another embodiment of the invention, the vehicle is a trailer.

[0027] The invention will be better understood upon reading the following description, given solely by way of example and made with reference to the attached drawings, in which:

[0028] [Fig-1] represents a perspective view of a vehicle according to the invention with a tray in a transport position, in a first embodiment.

[0029] [Fig.2] represents a vehicle similar to that of [Fig.l] with the platform in loading position.

[0030] [Fig.3] represents a side view of the vehicle of [Fig.2] with the platform in a transport position and vehicles loaded on the platform, and movable rails in the stowed position.

[0031] [Fig.4] represents a side view of the vehicle of [Fig.2] with the platform in a transport position and mobile rails in the deployed position.

[0032] [Fig.5] represents a perspective view of the vehicle of [Fig.2] with the platform in a position between the transport position and the loading position, with the tray not resting on the ground.

[0033] [Fig.6] represents a perspective view of the vehicle of [Fig.2] with the platform in a position between the transport position and the loading position, with part of the tray resting on the ground.

[0034] [Fig.7] represents a perspective view of the vehicle of [Fig.2] with the platform in the loading position.

[0035] [Fig.8] represents a perspective view of the vehicle according to the invention with the tray in a transport position, in a second embodiment.

[0036] [Fig.9] represents a perspective view of the vehicle of [Fig.8] with the platform resting on the ground in a raised position relative to the ground.

[0037] [Fig. 10] represents a perspective view of the vehicle of [Fig.8] with the platform in the loading position, in the lowered position relative to the ground.

[0038] The drawings are schematic representations to facilitate understanding of the invention. The components are not necessarily shown to scale. The same references correspond to the same components from one figure to another.

[0039] The X axis represents the longitudinal direction of the vehicle, the Y axis the transverse direction and the Z axis the vertical direction. The forward, backward, up, down directions are taken in the vehicle's frame of reference.

[0040] Figures 1 to 9 illustrate a vehicle according to the invention forming a trailer capable of being coupled to a motor vehicle.

[0041] As illustrated in [Fig.l] and 2, the vehicle 1 comprises wheels 10 connected to a structure 11. The wheels are arranged parallel and spaced apart from each other in a direction transverse Y to the vehicle 1, allowing movement of the vehicle 1 in a longitudinal direction X to the vehicle. In the figures, the trailer 1 comprises two pairs of wheels 10 side by side, on each of its lateral sides, and the two wheels 10 forming each pair are aligned with respect to the longitudinal direction X. Alternatively, the trailer comprises a different number of wheels 10, for example a single wheel 10 on each of its sides.

[0042] The trailer 1 further comprises two fixed sliding rails 13 spaced apart from each other in the transverse direction Y and fixed to the structure 11. The rails extend mainly in the general longitudinal direction X of the vehicle, that is to say the direction of which comprises a component mainly along the longitudinal axis X.

[0043] The trailer 1 comprises a platform 2 capable of receiving loads 3. The platform 2 is movable relative to the structure 11 by sliding in the longitudinal direction X along the fixed rails 13, via sliding plates 21, 22 cooperating with the fixed rails 13. The platform 2 slides between a transport position in which the platform 2 is on the vehicle 1, above the structure 11 and between the wheels 10, as illustrated in [Fig.l] and 3, and a loading position in which the platform 2 rests on the ground S outside the structure 11, in the extension of said structure 11 in the longitudinal direction X. The structure comprises an arrow 110 at the end of which is arranged a system to allow it to be coupled to a motor vehicle and to be towed.

[0044] The fixed rails 13 each comprise a middle segment arranged above one of the wheels 10, a rear segment arranged in a rear extension of the middle segment and forming a downward slope from the middle segment towards a rear direction and a front segment arranged in a front extension of the middle segment and forming a downward slope from the middle segment in a front direction opposite to the rear direction. In other words, following the path of the rail from the rear of the trailer 1 towards the front, in the longitudinal direction X, the fixed rails 13 each have a rear segment with a slope rising above the wheels 10 to the middle segment, then the middle segment arranged above the wheels 10, and finally the front segment with a downward slope from the middle segment.For example, the fixed rails 13 have a front end and a rear end each located at the height of the wheels 10, for example approximately at the level of the axis of the wheels 10, or lower than the axis of the wheels 10.

[0045] In the figures, the fixed rails 13 are curved with a center of curvature on the side of the ground S on which the vehicle 1 rests. In other words, the fixed rails 13 are curved upwards to pass over the wheels 10. For example, the curvature of the fixed rails 13 is an arc of a circle, that is to say that the radius of curvature of the fixed rails 13 is constant.

[0046] The trailer 1 further comprises two movable rails 14 moving between a deployed position in which said movable rails 14 are each in the extension of the fixed rails 13, as illustrated in [Fig.l], and a stowed position in which they are outside the extension of the fixed rails 13, as illustrated in [Fig.3]. In the deployed position, the movable rails 14 are arranged so as to form a ramp between the rear ends of the fixed rails 13 and the ground S, and so as to allow the sliding of the platform 2 along these movable rails 14, until it is in the loading position on the ground S, as shown in [Fig.7].

[0047] The stowed position is for example a position in which the movable rails 14 are arranged essentially vertically, at the rear ends of the fixed rails 13, as shown in [Fig. 4]. For example, each of the movable rails 14 is fixed via a rotating articulation 15 to the rear end of each of the fixed rails 13. The articulation 15 is arranged so as to allow rotation along an axis parallel to the transverse direction Y, the movable rails 14 passing from the deployed position to the stowed position by rotation around the articulation 15 in the opposite direction of the ground S. The movement of the movable rails 14 between the stowed position and the deployed position is for example obtained using a motorized articulation or a mechanism comprising one or more jacks, not shown in the figures.

[0048] As illustrated in the embodiments of the various figures, the movable rails 14 are curved in the opposite direction to the fixed rails 13 when said movable rails 14 are in the deployed position. In other words, in the deployed position, the center of curvature of the curve of each of the movable rails 14 is oriented in the opposite direction to the ground. For example, the radius of curvature of the movable rails 14 is constant, the curvature of the movable rails 14 then forming an arc of a circle.

[0049] In a variant, the curvature of the movable rails 14 is arranged so that the tangent of this curvature at the end of the movable rails 14 touching the ground S, when these movable rails 14 are in the deployed position, forms with the ground S an angle of less than 10 degrees, or even less than 5 degrees. Then, this angle increases as the two rails approach each other. At the junction between the fixed rails 13 and the movable rails 14, the tangent of each of the two fixed rails 13 is for example aligned with the tangent of each of the movable rails 14, or even with an angle between these two tangents of less than 10 degrees, or even less than 5 degrees.

[0050] As illustrated in the figures, the platform 2 is for example rectangular in shape. It comprises on each of these longitudinal edges, or also called lateral edges, two sliding plates 21, 22. The longitudinal edges extend in the longitudinal direction X of the trailer when the platform 2 is in the transport position. Each sliding plate 21, 22 comprises a sliding wheel 210, 220 projecting from the longitudinal edge of the platform 2 so as to cooperate with the fixed rail 13 and / or the movable rail 14 which is associated with it when the platform 2 moves between the transport position and the loading position. Each sliding wheel 210, 220 projects under the platform 2 so as to roll on the ground S when the platform 2 is in the loading position. In other words, the sliding wheels 210, 220 allow both the sliding of the tray 2 along the fixed rails 13 and / or mobile rails 14, in rolling on said rails 3, 4, and moving the tray 2 on the floor S by rolling directly on the floor S.

[0051] Figures 3 to 7 illustrate the trailer 1 with different positions of the platform 2. In Figures 3 and 4, the platform 2 is in the transport position: the sliding plates 21, 22 are in contact with the fixed rails 13, longitudinally on either side of the wheels 10 of the trailer 1, the points of contact with the fixed rails 13 being lower than the part of the fixed rails 13 located above the wheels 10 of the trailer. That is to say that the sliding plates 21, 22 are respectively in contact with the front and rear segments of the fixed rails 13. In [Fig. 3], when the platform 2 is in the transport position, the movable rails 14 are in a stowed position in which said movable rails 14 are placed vertically behind the platform 2. In this stowed position, the movable rails 14 make it possible to create a barrier preventing the platform 2 from moving backwards, outside the trailer 1. In [Fig.3], the platform 2 is in the transport position and the mobile rails 14 are positioned deployed in the extension of the fixed rails 13: the mobile rails 14 form in this deployed position a ramp between the fixed rails 13 and the ground S.

[0052] [Fig. 5] illustrates a first intermediate position of the tray 2 in its movement between its transport position and its loading position, in which the movable rails 14 are in the deployed position and the tray 2 has moved backwards, with sliding plates 21, called rear sliding plates 21, in contact with the movable rails 14, and the other sliding plates 22 called front sliding plates 22, in contact with the fixed rails 13. The front sliding plates 22 are arranged towards the front of the tray 2, and the rear sliding plates 21 are arranged towards the rear of the tray 2.

[0053] [Fig. 6] illustrates a second intermediate position of the platform 2 in its movement between its transport position and its loading position, in which the platform 2 has moved further towards the rear of the trailer compared to the first intermediate position. The rear sliding plates 21 of the platform 2 are in contact with the ground S. In the case of rear sliding plates 21 with sliding wheels 210, the sliding wheels 210 are in contact with the ground S and roll on the ground S, facilitating the movement of the platform 2 on the ground. The front sliding plates 220 cooperate with the movable rails 14.

[0054] [Fig. 7] illustrates the platform 2 in the loading position, in which the platform 2 slides until the front sliding plates 22 are at the end of the movable rails 14 located against the ground, or entirely on the ground, that is to say outside the movable rails 14 in the extension thereof, and outside the structure 11. In this position, the platform 2 is as close as possible to the ground S and allows easy unloading or loading of load 100 onto the platform 2. For example, an access ramp 3 is installed on a longitudinal edge of the platform 2 to allow loading or unloading of a vehicle to be loaded 100. The vehicle to be loaded 100 is for example a short vehicle, less than 3 meters, or a motorcycle.

[0055] In Figures 2 to 7, the sliding wheels 210, 220 are arranged at a distance from the ends of the longitudinal edges of the platform 2, i.e. the front or rear edge of the platform 2 connecting the longitudinal edges together. For example, the distance between one of the sliding wheels 210, 220 and the end of the nearest longitudinal edge of the platform 2 is between 10% and 25% of the total length of the longitudinal edge X. In [Fig.l], the sliding wheels 210, 220 are arranged at the ends of the longitudinal edges of the platform 2, allowing a position of the platform 2 on the trailer 1 lower than in the embodiment of [Fig.2]. But the position of the platform 2 relative to the ground S in the loading position remains the same.That is to say that the platform 2 comprises a loading surface capable of receiving loads to be transported, such as vehicles 100, the loading surface being at the same height from the ground S along the vertical axis Z when the platform 2 is in the loading position.

[0056] Figures 8 to 10 illustrate an alternative embodiment of the vehicle 1 according to the invention in which the vehicle 1 is also a trailer 1, but the sliding plates 21, 22 each comprise an adjustment device 211, 221 connecting each of the sliding interfaces 210, 220 to the platform 2. The adjustment devices 211, 221 are arranged so as to allow the distance between the sliding interfaces 210, 220 and the platform 2 to be modified at least in a direction perpendicular to the platform 2, i.e. in the vertical direction Z when the platform 2 is in the transport position.

[0057] In the embodiment of Figures 8 to 10, each adjustment device 211, 221 of each of the sliding plates 21, 22 comprises an oscillating arm 211, 221 each connecting one of the sliding interfaces 210, 220 to the plate 2. Each of the arms 211, 221 pivots about an axis of rotation parallel to the transverse direction Y of the vehicle 1, so as to modify the distance between the sliding interfaces 210, 220 and the plate 2 in the vertical direction Z by rotation of said arms 211, 221. The axes of rotation of the arms 211, 221 are arranged against the plate 2, fixed to the plate 2.

[0058] In the embodiment of these figures 8 to 10, the sliding interfaces 210, 220 are sliding wheels 210, 220, located at the ends of the arms 211, 221 opposite the axes of rotation of said arms 211, 221. The use of sliding wheels 210, 220 makes it possible to facilitate the lifting and lowering of the platform 2 by reducing the friction with the fixed sliding rails, the movable rails 14 and / or the ground S during the rotation of the arms 221, 221, depending on the position of the platform 2.

[0059] For example, as illustrated in Figures 8 to 10, the front sliding plates 22 comprise front arms 221 on each lateral side of the plate 2, at the front end of said plate 2. These front arms 221 are connected together by a front rotation axis 223. Similarly, the rear sliding plates 21 comprise rear arms 211 on each lateral side of the plate 2, at the rear end of said plate 2. These rear arms 221 are connected together by a rear rotation axis 213.

[0060] In Figures 8 and 9, the arms 221 and 211 are in the raised position, that is to say they extend vertically, in the direction X, towards the ground S relative to the platform 2, so as to increase the height of the platform relative to the ground S when the platform 2 rests on the ground S by the sliding wheels 210, 220, as illustrated in [Fig.9], or relative to the fixed rails 13 when the platform 2 is in the transport position, as illustrated in [Fig.8].

[0061] In [Fig. 10], the platform 2 rests on the ground S and the arms 211, 221 are arranged parallel to the platform 2, in a lowered position. That is to say that the arms 211, 221 are pivoted by approximately 90° relative to the previous raised position. The front arms 221 extend forward, the rear arms 211 backward. In other words, in the lowered position, the front 221 and rear 211 arms extend substantially in the longitudinal direction X but in the opposite direction. In this lowered position of the arms 211, 221, the plate 2 is arranged lower than in the raised position of the arms 211, 221. The movement of the arms 211, 221 can be carried out by an electric motor or a jack acting on each of the rotation axes 213, 223.

[0062] The presence of this adjustment device makes it possible to modify the height of the platform 2. Thus, when the platform 2 is in the loading position, its height relative to the ground can be reduced in order to facilitate the loading of load 100, such as for example one or more vehicles. And in the transport position or during movement from the loading position to the transport position, the raised position makes it possible to avoid contact between these loads 100 and the fixed rails 13 if said loads protrude laterally from the platform 2, by raising the height of the platform 2.

[0063] [Fig. 8] thus illustrates the tray 2 in the transport position with the arms 211, 221 in the raised position. The movable arms 211, 221 are illustrated in the stowed position, extending vertically behind the fixed rails 13. In this stowed position, the movable rails 14 are in contact with the rear sliding wheels 210, blocking their movement towards the rear. In [Fig. 9], the tray 2 is in the loading position, with the arms 211, 221 in the raised position. In [Fig. 10], the tray 2 is in the loading position, with the arms 211, 221 in the lowered position.

[0064] In an alternative embodiment, illustrated in Figures 8 to 10, the tray 2 comprises complementary wheels 222 coming into contact with the ground when the tray 2 is in the loading position. For example, these complementary wheels 222 are arranged at the same ends of the arms 221 as the sliding wheels 220, co axial to the sliding wheels 220, but of larger diameter than said sliding wheels 220, so as to come into contact with the ground S without the sliding wheels 220 touching the ground S. This arrangement makes it possible to protect the sliding wheels 220 from wear with a more abrasive ground surface than the fixed rails 13 and mobile rails 14, and to facilitate the ascent of the sliding wheels 220 onto the mobile rails 14 from the loading position, the difference in diameter between the sliding wheels 220 and the complementary wheels 222 making it possible to compensate for the excess thickness of the mobile rails 14 when they are deployed, in contact with the ground.

[0065] The vehicle illustrated in the figures is a trailer 1. Alternatively, the vehicle is a motor vehicle, such as a truck, the fixed rails being arranged so as to pass over the rear wheels of said motor vehicle.

[0066] In these different variants, a motorized means, not shown, for moving the platform between the transport position and the loading position may be provided. For example, a winch fixed to the structure, in front of the platform, comprises a cable connected to the platform: winding the cable onto the winch allows the platform to be moved from its loading position to the transport position, by pulling on the platform. Conversely, the movement from the transport position to the loading position is achieved by unwinding the cable by the winch, thus holding the platform and controlling its movement towards the transport position. For example, the movement of the platform is caused by gravity. Other motorized means known to those skilled in the art may be applied as a variant.

Claims

Claims

1. Vehicle (1) comprising wheels (10) connected to a structure (11), arranged parallel and spaced apart from each other in a direction transverse (Y) to the vehicle (1), allowing movement of said vehicle (1) in a longitudinal direction (X) to the vehicle, two fixed sliding rails (13) spaced apart from each other in the transverse direction (Y) and fixed to the structure (11), the rails extending in a general longitudinal direction (X) to the vehicle, a platform (2) capable of receiving loads (3), the platform (2) being movable relative to the structure (10) by sliding at least in the longitudinal direction (X) along the fixed rails (13), via sliding plates (21, 22) cooperating with the fixed rails (13), between a transport position in which the platform (2) is on the vehicle (1), above the structure (11) and between the wheels (10),and a loading position in which said platform (2) rests on the ground (S) outside the structure (11), in the extension of said structure (11) in the longitudinal direction (X), the vehicle being characterized in that the fixed rails (13) each comprise a middle segment arranged above one of the wheels (10), a rear segment arranged in a rear extension of the middle segment and forming a downward slope from the middle segment towards a rear direction and a front segment arranged in a front extension of the middle segment and forming a downward slope from the middle segment in a front direction opposite to the rear direction.,

2. Vehicle (1) according to the preceding claim, the fixed rails (13) of which are curved with a center of curvature on the side of the ground (S) on which the vehicle (1) rests.

3. Vehicle (1) according to one of the preceding claims, comprising two movable rails (14) moving between a deployed position in which they are each in the extension of the fixed rails (13), arranged so as to form a ramp between the rear ends of the fixed rails (13) and the ground (S), the platform (2) sliding along these movable rails (14), and a stowed position in which they are outside the extension of the fixed rails (13).

4. Vehicle (1) according to the preceding claim, each of the movable rails (14) of which is fixed via a hinge (15) in rotation respectively to one of the rear ends of each of the fixed rails (13), the hinge (15) being arranged so as to allow rotation along an axis parallel to the transverse direction (Y), the movable rails (14) passing from the deployed position to the stowed position by rotation around the articulation (15) in the opposite direction from the ground (S).

5. Vehicle (1) according to the preceding claim combined with claim 2, the movable rails (14) of which are curved in the opposite direction to the fixed rails (13) when said movable rails (14) are in the deployed position.

6. Vehicle (1) according to one of the preceding claims, the platform (2) of which is rectangular in shape and comprises on each of its longitudinal edges two sliding plates (21, 22), each sliding plate (21, 22) comprising a sliding wheel (210, 220) projecting from the longitudinal edge of the platform (2) so as to cooperate with one of the fixed rails (13) and / or movable rails (14) associated when the platform (2) moves between the transport position and the loading position, each sliding wheel projecting under the platform (2) so as to roll on the ground (S) when the platform (2) is in the loading position.

7. Vehicle (1) according to the preceding claim, each sliding wheel (210, 220) of which is arranged close to each of the ends of the longitudinal edges of the platform (2).

8. Vehicle (1) according to one of the preceding claims combined with claim 6, each of the sliding plates (21, 22) comprising a sliding interface (210, 220), preferably in the form of a sliding wheel (210, 220), cooperating with each of the fixed (13) and / or movable (14) rails so as to allow the sliding of the platform (2) relative to said rails (13, 14), and an adjustment device (211, 221) connecting each of the sliding interfaces (210, 220) to the platform (2), the adjustment device (211, 221) being capable of modifying the distance between the sliding interfaces (210, 220) and the platform (2) at least in a direction perpendicular to the platform (2).

9. Vehicle (1) according to claim 8, each adjustment device (211, 221) of which comprises an oscillating arm (211, 221) each connecting one of the sliding interfaces (210, 220) to the plate (2), each of the arms (211, 221) pivoting about an axis of rotation parallel to the transverse direction (Y) of the vehicle (1), so as to modify the distance between the sliding interfaces (210, 220) and the plate (2) in the vertical direction (Z) by rotation of said arms (211, 221).

10. Vehicle (1) according to one of the preceding claims, characterized in that the vehicle (1) is a trailer

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