Transport box for transporting finished parts

Abstract

The invention comprises a transport box for transporting prefabricated parts and for mounting on the chassis of a commercial vehicle, wherein a loading area of ​​the transport box extends on the chassis in a longitudinal and a lateral direction of the commercial vehicle and the transport box has at least two parallel outer edges. According to the invention, the transport box is divided orthogonally to the two parallel outer edges into at least a first segment and a second segment, wherein the two segments can be slid relative to each other via a linear guide along the parallel outer edges, thereby allowing the size of the loading area to be adapted to a prefabricated part.

Description

[0001] Transport box for transporting finished parts and chassis of a commercial vehicle, wherein a loading area of ​​the transport box extends on the chassis in a longitudinal and a lateral direction of the commercial vehicle and the transport box has at least two parallel outer edges.

[0002] When transporting goods of all kinds, it is essential to ensure adequate load securing. Besides protecting the goods themselves, this is crucial for ensuring road safety and preventing potential hazards during transport. Load securing has been a widely discussed topic for years, and its relevance is now indispensable, particularly due to legal regulations for commercial vehicles.

[0003] Various securing mechanisms are used for securing cargo during the transport of bulky goods, and especially when transporting finished parts. These can include, for example, lashing straps, chain hoists, or various wedging methods to secure the goods on the loading platform. In addition to these securing mechanisms, goods can also be secured by using a loading platform adapted to the shape of the specific goods, ensuring the cargo is held securely by a precisely fitting platform. For liquids or bulk goods, such load securing can be achieved relatively easily using at least partially closed tanks and other containers.While most solid goods can be transported in containers or other standardized transport receptacles, the transport of bulky goods or large prefabricated parts usually requires specially adapted transport containers, loading platforms, or transport vehicles. For various types of goods, and especially prefabricated parts, appropriate transport crates are also used, which are usually arranged on the loading platform of a truck and are suitable for transporting the aforementioned goods. For example, document DE29707713U1 discloses a transport pallet for sheet-like heavy goods, which is suitable for transporting prefabricated parts and whose size can be adapted to various loading platforms of transport vehicles. Document WO9318934A1 discloses a transport rack for a commercial vehicle.Documents EP0691241A1, DE20117881U1 and US2019 / 225417A1 reveal further transport racks and transport containers.

[0004] Besides load securing, the size of the vehicle, including its cargo, is particularly important when transporting bulky goods and heavy haulage, as these usually exceed the size standards of normal freight transport and are therefore subject to special regulations. This is especially true for the transport of prefabricated parts on inclined loaders. Wooden crates are typically used for transporting prefabricated parts on inclined loaders. While these protect the goods from environmental influences, they are expensive to manufacture and retain their full size even when empty. It would be advantageous if the transport container could be adjusted in size to the goods being transported, thus enabling the precise transport of prefabricated parts manufactured in different sizes.It would be particularly advantageous if a transport vehicle were smaller when empty than when actually carrying cargo, so that it could potentially travel without escort vehicles or additional requirements. Transport containers whose size can be adjusted would be especially useful, as they could be adapted to the size of the cargo during transport and then reduced in size for the return journey.

[0005] It is therefore the object of the present invention to provide a transport container for bulky goods and finished parts which is adjustable in size so that it can be adapted to the goods to be transported, can be adjusted to the smallest possible size when empty and protects the transported goods from environmental influences.

[0006] This problem is solved by a transport box for transporting finished parts, and a chassis of a commercial vehicle according to claim 1. The dependent claims relate to advantageous embodiments.

[0007] According to the invention, the transport box is divided orthogonally to the two parallel outer edges into at least a first segment and a second segment, wherein the two segments can be slid towards each other via a linear guide along the parallel outer edges and thereby the size of the loading area can be adapted to a finished part.

[0008] Preferably, the transport crate is suitable for transporting prefabricated components that can be precisely arranged within it. The term "prefabricated components" refers to all conceivable goods that can be transported in the crate. Prefabricated components could, for example, be bearings for wind turbines or similar manufactured parts that are transported as finished products. Such prefabricated components usually require protection from moisture during transport, making appropriate protection essential.

[0009] A suitable transport box is preferably used when transporting prefabricated parts on inclined loaders, whereby the transport box is transported at an angle to a road surface and the width of the transport vehicle can be individually adapted to a prefabricated part by both the inclination and the width adjustment of the transport box.

[0010] According to the invention, the transport box is square. Two opposing outer edges are arranged parallel to each other. Preferably, there is a right angle at the corners, giving the transport box a rectangular shape.

[0011] Preferably, a change in the size of the transport box also results in a change in the size of the loading area, wherein the loading area is preferably divided into a loading area of ​​the first segment and a loading area of ​​the second segment, and the two segments overlap at least partially. A change in the size of the transport box causes the loading areas of the two segments to shift relative to each other, so that the area in which the loading areas of the first and second segments overlap becomes larger or smaller.

[0012] The prefabricated components transported in the transport crate may rest directly on the loading platform inside the crate. It is conceivable that an additional layer exists between the loading platform and the prefabricated components for protection and / or insulation. Preferably, plastic sheets are used between the prefabricated component and the loading platform, but it is also conceivable that various other materials could be used.

[0013] Preferably, the two parallel outer edges are also subdivided into a section of the first segment and a section of the second segment. Preferably, the outer edges of the two sections also overlap, with the area in which the outer edges overlap increasing or decreasing as the size of the transport box changes.

[0014] According to at least one further embodiment, the transport box is divided parallel to its longitudinal direction and centrally with respect to its width, so that the two segments are of equal size. However, it is also conceivable that the two segments are not of equal size, and thus the transport box is divided in any desired ratio between the two segments.

[0015] It is also conceivable that the transport box is divided into at least two segments parallel to its width.

[0016] It is also conceivable that the transport box is divided into more than two segments, whereby, when the size of the transport box changes, the segments shift relative to each other and preferably also into each other.

[0017] According to at least one further embodiment, the segments are slidable relative to each other along the width direction, thereby allowing the size of the transport box to be changed in the width direction. Preferably, the size of the loading area changes accordingly. Accordingly, the two outer edges, which run parallel to each other, are also preferably arranged parallel to the width direction.

[0018] It is conceivable that if the transport box is divided along its width, the segments can be slid relative to each other along their length, thereby allowing the size of the transport box to be changed in the longitudinal direction. This also preferably results in the two parallel outer edges of the transport box being arranged parallel to the longitudinal direction.

[0019] The outer edges, arranged parallel to each other, are preferably always parallel to the direction in which the segments of the transport box can be slid relative to each other. Therefore, the outer edges are preferably arranged parallel to the width direction.

[0020] According to at least one further embodiment, the two segments are connected to each other via at least one hydraulic cylinder, which is arranged parallel to the linear guide. Preferably, the segments are connected to each other by two hydraulic cylinders.

[0021] The hydraulic cylinders are preferably attached to the segments in such a way that the segments move relative to each other when the hydraulic cylinders extend or retract. This allows the size of the transport box to be adjusted by actuating the hydraulic cylinders.

[0022] The hydraulic cylinders are preferably connected to a hydraulic pump, whereby actuation of the pump results in the hydraulic cylinder being extended or retracted.

[0023] Preferably, the pump is manually operated, but it is also conceivable that the pump is operated by a motor. Preferably, the pump is operated by an electric motor, in which case it is conceivable that the pump can be controlled from a driver's cab.

[0024] The hydraulic pump is preferably mounted on the loading platform so that it is positioned next to or inside the prefabricated component being transported. The size of the transport box is preferably adjusted before loading with a prefabricated component. However, it is also conceivable that the size of the transport box is adjusted after loading with the prefabricated component, preferably by at least partially clamping and thus locking the prefabricated component in place.

[0025] According to at least one further embodiment, the linear guide runs parallel to the width direction and consists of at least two support profiles lying next to each other in the longitudinal direction on the first segment and of at least two square profiles lying next to each other in the longitudinal direction on the second segment.

[0026] Preferably, different support profiles can be used on both the first and the second segment, wherein the support profiles of the first and second segments preferably interlock in such a way that the movement of the two segments relative to each other is restricted in all degrees of freedom, except in the direction of the linear guide.

[0027] For the linear guide, T-beams, H-beams, U-beams, or similar support profiles can be used.

[0028] According to at least one further embodiment, a square profile runs between two parallel support profiles as the segments are displaced relative to each other. Preferably, the adjacent support profiles form a guide profile into which the square profile can be inserted, at least partially, along the sliding direction of the two segments relative to each other. Preferably, the two adjacent support profiles lock the inserted square profiles in all degrees of freedom, except for the translational degree of freedom, which runs parallel to the sliding direction of the segments relative to each other.

[0029] According to at least one further embodiment, the segments are locked in their movement relative to each other by at least one locking element, which is guided along a vertical direction of the commercial vehicle through at least the loading platform of the first segment and the square profiles of the second segment.

[0030] Preferably, this allows for a stepless adjustment of the transport box size. First, the size of the transport box is adjusted by moving the segments relative to each other using the hydraulic cylinders, and then a locking element is guided through the loading platform and the square profile underneath. Preferably, after the locking element is inserted, the square profile of the second segment is also locked in the translational sliding direction between the support profiles of the first segment. Preferably, the first and second segments are thus locked relative to each other in all degrees of freedom.

[0031] The transport box's stepless size adjustment allows it to be adapted to different sized finished parts.

[0032] Preferably, several square profiles are arranged side-by-side on the second segment, and support profiles on the first segment, perpendicular to the direction of movement. It is conceivable that a locking element is provided for each square profile.

[0033] Preferably, the locking element is designed as a locking bolt. However, it is also conceivable that the locking mechanism is designed as a different type of pin, spring latch, or similar device suitable for locking the segments in their movement relative to each other.

[0034] According to at least one further embodiment, the finished parts are designed as hollow cylinders and rest on the loading platform with their circular side. Preferably, the axis of rotation of the hollow cylinders thus runs parallel to the vertical direction.

[0035] The prefabricated components are arranged on the loading platform of the transport crate in such a way that they are secured against movement in at least the lateral and longitudinal directions by fastening elements. Preferably, the prefabricated components are also secured against movement in the vertical direction by the fastening elements. This secures the prefabricated components, especially against vertical movement during transport over uneven roads.

[0036] Preferably, the finished parts are secured by the fastening elements both from inside and outside the hollow cylinder.

[0037] According to at least one further embodiment, the size of the transport box can be adapted for diameters of the finished parts shaped as hollow cylinders between 4000mm and 5300mm.

[0038] The height of the finished parts, which are shaped as hollow cylinders, in the vertical direction Z is preferably 500mm to 550mm, resulting in a ring-shaped form for the finished parts.

[0039] It is possible to transport prefabricated parts shaped as hollow cylinders with different wall thicknesses in the transport box.

[0040] According to at least one further embodiment, fastening elements are arranged on the loading platform which restrict the freedom of movement of at least one finished part on the loading platform in the lateral and longitudinal directions by clamping the finished part and thus serve as load securing during transport.

[0041] Preferably, the fastening elements are welded to the loading platform and thus rigidly connected to it. It is conceivable that the fastening elements incorporate a lever mechanism, the actuation of which locks the finished parts in their position on the loading platform.

[0042] According to at least one further embodiment, at least one suspension element is attached to the loading platform, via which the transport box can be lifted vertically by a crane or other lifting mechanism.

[0043] Preferably, several suspension elements are attached to the loading platform, which are shaped as eyelets so that a hook, a rope, or a similar element can be inserted into them for fastening.

[0044] Preferably, the suspension elements are welded to the loading platform and thus rigidly connected to it.

[0045] According to at least one further embodiment, the transport box is arranged to tilt on the chassis, so that the loading area can pivot with respect to a pivot axis running parallel to the longitudinal direction.

[0046] Preferably, the transport box rests on a pivotable part of the chassis, so that the pivotable part of the chassis can pivot even without the transport box, but when a transport box rests on the pivotable part, it pivots along with it.

[0047] Preferably, the transport box is arranged to pivot between the width and height directions. It is conceivable that this pivoting is achieved by extending a hydraulic cylinder, which lifts the pivotable part of the chassis at least on one side and thus pivots it about the pivot axis.

[0048] According to at least one further embodiment, during transport the transport box (2) is pivoted with respect to the pivot axis (A) and thus runs obliquely to the vertical direction (Z) and horizontal direction (Y).

[0049] Preferably, the overall width of the vehicle is reduced by the swiveling transport box, thus reducing the impact on other road traffic.

[0050] Preferably, the transport box is swivelled so that, in the direction of travel, it protrudes higher on the left side than on the right side.

[0051] The transport box can be covered with a tarpaulin, which can be adapted to the size of the transport box.

[0052] According to the invention, the tarpaulin cover is attached to one end of the transport box in the width direction and rolled up at the opposite end via a winding mechanism, making the tarpaulin cover adaptable to the size of the transport box.

[0053] Preferably, the cover is large enough to precisely fit the transport crate in its largest possible state. The cover can then be at least partially rolled up by the winding mechanism if the segments of the transport crate are moved relative to each other, thus changing the crate's size. This demonstrates that the winding mechanism can roll up the cover at least as far as the segments can be moved relative to each other. Preferably, the cover can be completely rolled up by the winding mechanism so that the cover is neatly stowed and protected from damage during loading and unloading of the transport crate.

[0054] Preferably, the cover is variable in its extent in the direction in which the segments of the transport box can slide relative to each other. According to the design of the transport box, the cover is therefore variable in the width direction, while it has a constant extent in the length direction.

[0055] Preferably, the transport crate has at least one support for the tarpaulin, preferably in the form of a pole attached along the longitudinal direction to an upper edge of the transport crate, on which the tarpaulin rests. This prevents the tarpaulin from sinking into the transport crate and thus also prevents puddles from forming on the tarpaulin due to rain. Preferably, at least two such supporting poles are attached to the transport crate.

[0056] According to at least one further embodiment, the tarpaulin completely covers the transport box and thus protects the finished parts from environmental influences such as moisture, sunlight, or similar.

[0057] Further objectives, advantages, features, and applications of the present invention will become apparent from the following description of exemplary embodiments with reference to the drawings. All features described and / or illustrated, individually or in any meaningful combination, constitute the subject matter of the present invention, even independently of their compilation in the claims or their cross-references.

[0058] They show: Fig. 1: A transport crate with a prefabricated part in the smallest adjustable size. Fig. 2: A transport crate with a prefabricated part in the largest adjustable size. Fig. 3: A transport crate with separate views of the segments. Fig. 4a: A transport crate in three different sizes from a rear view. Fig. 5: A transport crate on a chassis in a flat and tilted view. Fig. 6a: A transport crate from a side view and a sectional view.

[0059] The Figures 1 to 3 Figure 2 shows a transport box 2 from a top view, wherein the transport box 2 extends in the longitudinal direction X and the lateral direction Y, and the parallel outer edges 5 of the transport box 2 are arranged parallel to the lateral direction Y.

[0060] From the top view, the position of the fastening elements 11 on the loading platform 4 is particularly evident; these are preferably arranged at both ends of the transport box 2 with respect to the lateral direction Y. As a result, the fastening elements 11 also move relative to each other when the first segment 2a and the second segment 2b move relative to each other.

[0061] Furthermore, the arrangement of the suspension elements 12 is shown, wherein each of the two segments 2a and 2b preferably has two suspension elements 12. The transport box 2 can therefore preferably be suspended via the four suspension elements 12 and thus lifted by a crane or similar lifting device.

[0062] It is conceivable that the suspension elements 12 can also be attached to at least one of the fastening elements 11 and that these can therefore be used both as fastening element 11 for the finished part 16 and as suspension element 12 for lifting the transport box 2.

[0063] Furthermore, the arrangement of the hydraulic pump 17 on the loading platform is shown, which is preferably located on the loading platform 4 in the area of ​​the second segment 2b. Preferably, the areas of the hydraulic cylinders 7 with all hydraulic connections are also attached to the second segment 2b.

[0064] The hydraulic cylinders 7 are arranged in their longitudinal direction parallel to the parallel outer edges 5 of the transport box, so that when the hydraulic cylinders are actuated, the transport box 2 is enlarged or reduced in the width direction Y.

[0065] Preferably, all components with hydraulic connections are arranged on the same segment 2a or 2b, so that no hydraulic lines need to be lengthened or shortened when segments 2a and 2b are moved relative to each other, and therefore no flexible sections of the hydraulic lines are necessary.

[0066] When the transport box 2 is adjusted in the width direction Y, the two segments 2a and 2b can be locked in their relative position by the locking elements 8. The locking elements 8 are preferably pushed simultaneously through the loading surface 4 in the area of ​​the first segment 2a and the square profiles 6b of the second segment 2b.

[0067] In the Figure 2 and 3 The holes in the loading area 4 of the first segment 2a are shown, through which the securing element 8 is passed and which are arranged next to each other in the width direction Y.

[0068] In Figure 3 The corresponding holes in the square profiles 6b are visible, through which the securing elements 8 are also passed. Preferably, each square profile 6b has only one hole, while the loading platform 4 has a plurality of holes.

[0069] In Figure 1 The transport box 2 is shown in its smallest possible dimension, whereby the two segments 2a and 2b overlap at least partially in this state, and thus the transport box 2 has the smallest possible dimension in the width direction Y. The transport box 2 is therefore adapted in the width direction Y to the smallest possible prefabricated part 16 to be transported, which is locked in position by the fastening elements 11. The transport box 2 can only be adapted to the prefabricated part 16 in the width direction Y, and thus in the longitudinal direction X the prefabricated part 16 does not rest against the outer edges 5 of the transport box.

[0070] In Figure 2 The transport crate 2 is shown in its maximum possible size, with segments 2a and 2b preferably not overlapping, or only minimally overlapping, and arranged directly next to each other in the width direction Y. Minimal overlap of segments 2a and 2b is conceivable to seal the crate and protect the finished part 16 from environmental influences. The transport crate 2 is thus adapted in the width direction Y to the largest possible finished part 16 to be transported, which is secured in its position by the fastening elements 11. In contrast to Figure 2 fills the finished part 16 in Figure 3 The transport box 2 is completely filled in both the width direction Y and the length direction X.

[0071] The Figure 1 and 2The winding mechanism 10 is shown, by which the cover of the transport box 2 can be adjusted along the width direction Y to the respective size of the transport box 2. The tensioning elements 18 are also shown, by which the cover 9 is stretched over the box after the size has been adjusted.

[0072] In the Figures 4a to 4c and 5 Transport box 2 is shown from your rear view. In the Figures 4a to 4c Transport box 2 is shown in different states, with in Figure 4a The transport box 2 is divided into the two segments 2a and 2b, in Figure 4b which shows the transport box 2 in its maximum possible extension size, and in Figure 4c in its minimum extension size.

[0073] In Figure 4aThe two segments 2a and 2b of the transport box 2 are shown separately, with the segments 2a and 2b arranged side by side in the lateral direction Y such that, when moved towards each other, the square profiles 6b are arranged in the longitudinal direction X between the support profiles 6a, thus making the transport box 2 assemblable, as shown in the Figures 4b and 4c The representation of transport box 2 is analogous to the representation in Figure 3 , however from a different perspective, which points to a plane spanned by the height direction Z and the latitude direction Y.

[0074] Figure 4aFigure 1 shows that the first segment 2a, in addition to the support profiles 6a, preferably comprises the winding mechanism 10 and the tensioning elements 18 for the cover 9, as well as two suspension elements 12, of which only one is visible due to perspective. The second segment 2b, in addition to the square profiles 6b, preferably also comprises the securing elements 8, as well as the hydraulic components, which include the hydraulic pump 17, the hydraulic cylinders 7 and corresponding hydraulic lines (not shown), and which are preferably arranged on the loading platform 4. Furthermore, the second segment 2b preferably also comprises two suspension elements 12, of which again only one is visible due to perspective.

[0075] Figure 4bFigure 1 shows that the locking element 8 is guided at least partially along the vertical direction Z through the square profile 6b. Preferably, the locking element 8 has a thickening so that it can only be partially inserted into the square profile (6b) and thus does not slide completely through it.

[0076] Figure 4b shows a transport box 2 analogous to the state of the transport box from Figure 2 from the rear view. Figure 4bThis shows the maximum possible state of the transport box 2, in which it can load the finished parts 16 of the maximum possible size. The hydraulic cylinders 7 are preferably attached to segments 2a and 2b at the same locations where the suspension elements 12 are attached. Preferably, the hydraulic cylinders 7 are fully extended to accommodate the largest possible finished part 16 in the transport box 2. In this position, the hydraulic cylinders 7 have their maximum extension in the lateral direction Y.

[0077] Figure 4c shows a transport box 2 analogous to the state of the transport box from Figure 1 from the rear view. Figure 4b This shows the smallest possible state of the transport box 2 in which these finished parts 16 can be loaded with the smallest possible size. Preferably, in this state of the transport box 2, the hydraulic cylinders 7 are fully retracted and have the smallest possible extension in the lateral direction Y.

[0078] Figure 5 Figure 1 shows a transport box 2 from a rear view, showing the transport box 2 once in a horizontal orientation and once pivoted with respect to the pivot axis A. The horizontal orientation, in which the loading surface 4 is aligned parallel to the width direction Y, corresponds to the position of the transport box 2 in which it can be lifted from the chassis 3 of the commercial vehicle via the suspension elements 12.

[0079] Figure 5Figure 2 shows the transport box 2 and the chassis 3 of a commercial vehicle on which the transport box 2 is mounted. At least part of the chassis 3a is pivotable about the pivot axis A. The pivotable part of the chassis 3a is connected to the fixed part of the chassis 3a via a hydraulic cylinder 7a and the pivot axis A. When the hydraulic cylinder 7a extends, it pivots the pivotable part of the chassis 3a about the pivot axis A. Since the transport box 2 is mounted on the pivotable part of the chassis 3a, it pivots along with it when the hydraulic cylinder 7a is actuated.

[0080] Preferably, the transport box 2 pivots in the lateral direction Y (preferably in the direction of travel to the right side) of the commercial vehicle 1. Preferably, the pivoted state of the transport box 2 corresponds to a transport state in which the transport box alone, or containing a corresponding finished part 16, is transported.

[0081] It is conceivable that the transport box 2 is mounted on the pivotable part of the chassis 3a and that the transport box 2 can be unloaded from the chassis 3, 3a by a movement in the lateral direction Y. Preferably, this is also possible with a crane or similar lifting mechanism which can at least partially lift the box at the suspension elements 12.

[0082] The Figures 6a and 6b show a transport box 2 in a side view, where in Figure 6a a view of the exterior of transport crate 2 and in Figure 6b A sectional view is shown from the same perspective.

[0083] In Figure 6a The winding mechanism 10 of the cover 9 and the tensioning elements 18 for the cover 9 are shown in particular. The winding mechanism 10 preferably consists of a rod 19 extending along the longitudinal direction X of the transport box, which is rotatable and attached to the transport box 2 parallel to the longitudinal direction X.

[0084] Preferably, the cover tarpaulin 9 can be wound up by rotating the rod 19 around its own axis of rotation, which runs parallel to the longitudinal direction, and thus adapted to the size of the transport box 2.

[0085] Once the tarpaulin 9 is rolled up, it can be tensioned using the tensioning elements 18. The tensioning elements 18 are preferably designed as strap tensioners, which tension a strap attached to the tarpaulin 9, thereby also tensioning the tarpaulin 9. Preferably, at least three tensioning elements 18 are attached to the transport box.

[0086] Figure 6bFigure 1 shows a sectional view of the transport box, revealing the arrangement of the square profiles 6b between the support profiles 6a at the lower end of the transport box 2 with respect to the vertical direction Z. Preferably, several arrangements of support profiles 6a and square profiles 6b are attached to the transport box 2 along the longitudinal direction X, with all support profiles 6a and square profiles 6b together forming the linear guide 6. Preferably, a securing element 8 is guided through the loading surface 4, the support profiles 6a, and the square profiles 6b for each associated support profile 6a and square profile 6b. Reference symbol list

[0087] 1 Commercial vehicle 2 Transport box 2a First segment of the transport box 2b Second segment of the transport box 3 Chassis of the commercial vehicle 3a Swiveling part of the chassis 4 Loading platform 5 Outer edges 6 Linear guide 6a Support profiles 6b Square profiles 7 Hydraulic cylinder 7a Hydraulic cylinder of the chassis 8 Securing element 9 Tarpaulin 10 Winding mechanism 11 Fastening elements 12 Suspension element 16 Finished parts 17 Hydraulic pump 18 Tensioning elements 19 Rod of winding mechanism XLanxious direction Ybroad direction ZHelevative direction ASwivel axis with respect to which the transport box can swivel.

Claims

1. A transport box (2) for transporting prefabricated parts and a chassis (3) of a commercial vehicle (1) on which the transport box (2) is mounted, wherein a loading surface (4) of the transport box (2) extends on the chassis (3) in a longitudinal direction (X) and a transverse direction (Y) of the commercial vehicle, wherein at least a portion of the chassis (3a) is arranged to pivot about a pivot axis (A) and the pivotable portion of the chassis (3a) is connected to the fixed part of the chassis (3) via a hydraulic cylinder (7a) and the pivot axis (A) to the fixed part of the chassis (3), wherein, when the hydraulic cylinder (7a) is extended, it is designed such that it pivots the pivotable part of the chassis (3a) about the pivot axis (A), wherein the transport box (2) is of rectangular design and two opposite outer edges (5) are arranged parallel to one another and there is a right angle at the corners and the transport box (2) has a rectangular shape, wherein the transport box (2) is arranged on the swivelling part of the chassis (3a), whereby it can swivel along with the chassis when the hydraulic cylinder (7a) is actuated, wherein the transport box (2) is divided orthogonally to the two parallel outer edges (5) into at least a first segment (2a) and a second segment (2b), and the two segments (2a, 2b) can be slid relative to one another along the parallel outer edges (5) via a linear guide (6), wherein the size of the loading area (4) can be adapted to a prefabricated element (16).

2. Transport box (2) and chassis (3) according to claim 1, characterised in that the transport box (2) is divided parallel to the longitudinal direction (X) and centrally with respect to the width direction Y, so that the two segments (2a, 2b) are of equal size.

3. Transport box (2) and chassis (3) according to at least one of the preceding claims, characterised in that the segments (2a, 2b) are slidable relative to one another along the width direction (Y), whereby the size of the transport box (2) in the width direction (Y) can be varied.

4. Transport box (2) and chassis (3) according to at least one of the preceding claims, characterised in that the two segments (2a, 2b) are connected to one another via the at least one hydraulic cylinder (7), which is arranged parallel to the linear guide (6).

5. Transport box (2) and chassis (3) according to at least one of the preceding claims, characterised in that the linear guide (6) runs parallel to the width direction (Y), the first segment (2a) consists of at least two carrier profiles (6a) arranged side by side in the longitudinal direction (X), and the second segment (2b) consists of at least two square profiles (6b) arranged side by side in the longitudinal direction (X).

6. Transport box (2) and chassis (3) according to claim 5, characterised in that when the segments (2a, 2b) are moved relative to one another, a square profile (6b) runs between two support profiles (6a) arranged parallel to one another.

7. Transport box (2) and chassis (3) according to at least one of the preceding claims, characterised in that the segments (2a, 2b) are locked in their movement relative to one another by at least one locking element (8), which is guided along a height direction Z of the commercial vehicle (1) through at least the loading area (4) of the first segment (2a) and the square profiles (6b) of the second segment (2b).

8. Transport box (2) and chassis (3) according to at least one of the preceding claims, characterised in that the prefabricated parts (16) are designed as hollow cylinders and rest with their circular side on the loading area (4).

9. Transport box (2) and chassis (3) according to claim 8, characterised in that the size of the transport box (2) is adjustable for diameters of the prefabricated parts (16) formed as hollow cylinders between 4000 mm and 5300 mm.

10. Transport box (2) and chassis (3) according to at least one of the preceding claims, characterised in that fastening elements (11) are arranged on the loading surface (4), which restrict the freedom of movement of at least one precast element (16) on the loading surface (4) in the width direction (Y) and length direction (X) by clamping the precast element (16) and thus serve to secure the load during transport.

11. Transport box (2) and chassis (3) according to at least one of the preceding claims, characterised in that at least three suspension elements (12) are mounted on the loading surface (4), via which the transport box (2) can be lifted in the height direction (Z) by a crane or other lifting mechanism.

12. Transport box (2) and chassis (3) according to at least one of the preceding claims, characterised in that the transport box (2) is arranged on the chassis (3) in a tiltable manner, such that the loading surface (4) can be pivoted about a pivot axis (A) extending parallel to the longitudinal direction (X).

13. Transport box (2) and chassis (3) according to at least one of the preceding claims, characterised in that the transport box (2) and chassis (3) are designed such that, during transport, the transport box (2) is pivoted about the pivot axis (A) and thus runs at an angle to the height direction (Z) and width direction (Y).

14. Transport box (2) and chassis (3) according to at least one of the preceding claims, characterised in that the transport crate can be covered with a tarpaulin, wherein the tarpaulin (9) is secured at one end of the transport crate (2) in the width direction Y and is rolled up at the opposite end via a winding mechanism (10), whereby the tarpaulin (9) can be adjusted to the size of the transport crate (2).

15. Transport box (2) and chassis (3) according to claim 14, characterised in that the cover sheet (9) is designed such that it completely covers the transport box (2) and thereby protects the prefabricated parts (16) from environmental influences such as moisture, sunlight or the like.

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