CN108137226A - Base frames for shipping containers - Google Patents

Abstract

The invention relates to a base frame (1) for a shipping container, comprising a front end (2) and a rear end (3) separated by a bolster (4), the front end of the base frame (1) comprising a pair of bottom side rails or beams (7) and a pair of gooseneck rails or beams (9) positioned in the longitudinal direction of the container, the rear end (3) of the base frame (1) extending from a sill (61) to the bolster (4), wherein the gooseneck rails (9) extend continuously from a front sill (6) to the bolster (4), and a plurality of arcs (51) extend continuously from the bottom side rails (7) in one side of the front end of the base frame (1) to the bottom side rails (7) in the opposite side of the front end of the base frame (1).

Description

Base frames for shipping containers

technical field

The present invention relates to a base frame for a shipping container comprising a front end and a rear end separated by a bolster, the front end of the base frame comprising a pair of bottom side rails or beams and a pair of goosenecks positioned in the longitudinal direction of the container Track or beam, the rear end of the base frame extends from the sill to the bolster.

Background technique

Shipping containers typically include a pair of side walls, a rear end, a front end, a roof, a floor, and a base frame. The base frame comprises two longitudinal bottom side rails and a plurality of parallel bottom cross-members on which a base plate is placed and secured to such cross-members by means of fastening means. At the end of the floor and in the base frame arranged in the front end of the container, a heavier-than-normal cross-member forms one end of the so-called gooseneck area of the container. This heavier cross member is commonly referred to as a bolster. The bolster forms a transition between the floor in the main portion of the container and the floor in the gooseneck portion of the container. The floor in the gooseneck portion or front end of the container covers the area from the bolsters to the front panel of the container and from one side of the container to the other. In the gooseneck section there is also a cross member called a cantilever, but here the cross member extends laterally from the bottom side track to the gooseneck track. The gooseneck is usually provided with two parallel gooseneck tracks extending from the front of the container to the bolster. Below the base plate and between the gooseneck tracks is formed a channel, called the gooseneck channel.

The most commonly used dry container floor material is hardwood which has become a scarce resource. Thus, there is a need to find or develop alternative bedplate systems that can meet the mechanical requirements set forth by the ISO standard.

Most of these alternative floor systems include multiple profiles or strips that are brought together to form the floor.

For example, prior art floor construction uses three different sizes of wooden floor. A large floor with dimensions L x W (length x width) 2400 mm x 1160 mm may be used from the door end of the container to the bolster. Since the distance from the door end of the container to the bolster is typically 8588 mm, only three base plates with the above dimensions can be arranged side by side in pairs (the internal width of the base plate in a container is 2 x 1160 mm), leaving a distance to the bolster 1388mm clearance. Thus, it is necessary to provide a pair of bottom plates having dimensions of L×W1388mm×1160mm to complete the bottom plate arrangement from the sill to the bolster.

On each side of the gooseneck formed by the two gooseneck rails extending from the front of the container to the bolsters, a third size wooden floor is used, with steel plates fastened to the gooseneck rails. The dimensions of these base plates are L x W 1626mm x 636mm. These base plates are fastened to outrigger beams extending from the bottom side rails to the gooseneck rails.

Goosenecks can also be manufactured in a curved style where the track and floor are formed from plates and bent into panels.

The above-mentioned dimensions of the base plate prevent adequate use of the modular system, since the length or width of the two regions cannot be divided from each other.

ISO containers, and in particular the gooseneck area, are defined by criteria set by ISO. The relatively heavy gooseneck thus opens up the need for alternative design methods that meet the above-mentioned challenges due to ISO constraints on physical dimensions that fit within the chassis design and keep the permanent placement of the gooseneck floor within prescribed limits.

Prior art chassis elements exhibit a chassis dimension in the area of the cantilever beam that differs from the modules of the rest of the chassis element. The same applies to the second size base plate used between the sill and the bolster.

Contents of the invention

It is an object of the present invention to provide a base frame having sufficient strength and flexibility to use a floor system in which the floor elements can be arranged as modular floor elements.

By providing the gooseneck end of the container with steel covering the length from the bolster to the front sill (the front end of the container) and the width from the bottom side rail in one side of the container to the bottom side rail in the other side of the container floor, and at the same time change the position of the bolster so that the distance from the sill at the rear end of the container to the bolster is the full length of the wooden floor and half the length of the module, thus reducing the need for several different sized floors.

This is also possible by changing the position of the bolster as described above, and at the same time completely changing the base- and floor design of the area from the bolster to the front panel to include the entire steel structure. Therefore, the only system component required is a system covering the area from the sill to the bolster. Thereby, the need for a traditional cantilever beam floor is eliminated, and it is achieved that modules of common dimensions can be used with wooden floors, eg 2400mm full length of the module. This simultaneously shortens the required length of the full length of the floor panel to 8400mm, or in the case of a plywood floor the length is reduced to 3 x 2400mm + 1 x 1200mm compared to the original 11940mm, or in the case of a plywood floor the original length 3×2400mm+1×1388mm+2×1626mm. Formation of baseplate type forms of reduced dimensions from 3D to 2D, where one is half the size of the other.

Another example of a common board length is a plywood base board having dimensions Length x Width: 2440mm x 1220mm.

Thereby it is possible to provide a base frame having sufficient strength and flexibility to use a floor system in which the floor elements can be provided as modular floor elements and reduce the need for hardwood flooring.

By introducing a universal gooseneck design from the container's bolster to the front panel, flexibility is added for the use of various floor systems from sill to bolster.

Some other advantages gained by the invention are that the number of cantilever and gooseneck sections is practically halved compared to standard designs, and the layout will preferably have several long welding cycles, making it suitable for automated welding.

The long and closed profile makes the system more suitable for surface treatment.

The consumption of wood for the floor is reduced, and thus also the use of fungicides and insecticides.

Furthermore, the amount of sealant in the area of the floor is significantly reduced.

This is accomplished by the gooseneck track extending continuously from the front sill to the bolster and the plurality of arcs extending continuously from the bottom side track in one side of the front end of the base frame to the bottom side in the opposite side of the front end of the base frame track.

In a base frame embodiment, the arc is secured to the underside of a steel floor in the front end of the base frame, and the gooseneck track is secured to the spine or top of the arc.

In an embodiment of the base frame, the arc is fixed to the underside of the steel floor in the front end of the base frame, and the gooseneck track is provided with a cutout substantially corresponding to the shape of the arc.

In an embodiment of the base frame, the gooseneck track is secured to the arc by welding.

In an embodiment, the base frame comprises a pair of gooseneck rails or beams extending from the front sill/front end of the container to the bolster. Two gooseneck tracks form a gooseneck channel. Between the gooseneck tracks in the gooseneck channel there are a plurality of cross members in the form of arcs of reduced height compared to known outriggers/cross members. At each side of the gooseneck channel there are also arcs between the gooseneck track and the bottom side track of reduced height compared to known outriggers/cross members. Here, the arcs disposed between the bottom side rail and the gooseneck rail may be aligned longitudinally across the full length of the base frame to facilitate welding to the steel floor, but this is not required.

In an alternative embodiment, for the arc arranged at the end of the gooseneck channel facing the front sill of the base frame, as compared to the arc arranged in the end of the gooseneck channel facing the bolster, The distance between the arcs is greater.

In an alternative embodiment, the arc is arranged to extend continuously from the bottom side rail in one side of the base frame to the bottom side rail at the opposite side.

In an alternative embodiment, a cantilever beam is provided between the bottom side track and the cantilever beam track, and a cantilever beam is provided between the cantilever beam track and the gooseneck track.

The gooseneck track can then be placed and welded to the spine or top of the arc, or the gooseneck track can be provided with a cutout that substantially corresponds to the shape of the arc, leaving enough room so that the gooseneck track can be aligned with the gooseneck The steel base plate in and in contact with the profile of the arc. When the gooseneck rails are welded to such a floor frame, a base frame with high strength and rigidity is achieved while at the same time keeping the weight low compared to prior art base frames.

In this embodiment, the gooseneck track may be a half-form supported by a plurality of gussets arranged on the spine of the arc or below the floor in a direction perpendicular to the open side of the gooseneck track.

In an embodiment of the base frame, the bolster is provided with a shelf portion arranged at a distance from the sill to support the end of the floor, the distance being the full length of the floor and half the length of the module.

The shelf portion includes a substantially horizontal support portion on which the end of the floor can rest. Substantially horizontal means between -5 degrees and 5 degrees relative to horizontal.

The shelf portion also includes a docking portion. The abutment portion forms a kind of stop to which the bottom plate can abut. The docking portion is substantially vertical. Substantially vertical means between 85 and 95 degrees relative to horizontal.

In an alternative embodiment, the shelf portion is formed by the end of a steel floor of the gooseneck portion of the container, the steel floor comprising a steel plate provided with the shelf portion, the steel floor and thereby the shelf portion fastened to the bolster And supported by bolsters.

In an alternative embodiment, the shelf portion is formed from an L-shaped profile fastened to and supported by a plurality of bolster gussets distributed along the length of the bolster.

In an alternative embodiment, the bulkhead portion is formed by a bolster.

In an alternative embodiment, the shelf portion is supported by a plurality of bolster gussets.

In an alternative embodiment, the shelf portion is formed from an L-shaped profile fastened to a plurality of gussets supporting the bolster.

In an alternative embodiment, the steel floor is provided with a nose in the form of a slightly downwardly sloping end of the floor facing the rear end of the container. The downward inclination of the nose is in the interval comprised between 1° and 10° relative to the base plate. In an embodiment, the inclination of the nose is 4°.

The beveled portion of the nose provides for the abutment of the edge of the nose with the base plate and makes it possible to compensate for variations in the thickness of different base plates. Furthermore, the sloping portion of the nose provides a ramp that makes it easier to pass over the floor at the rear of the container and the steel floor in the gooseneck portion or the steel floor at the front end of the container when manipulating the cargo to be transported within the container. The transition between the base plates.

In embodiments, the nose is chamfered to avoid cargo binding on slopes and to make cleaning easier.

In an alternative embodiment, the floor in the rear of the container abuts the steel floor above the bolster such that the heights of the floor and the surface of the steel floor are substantially aligned.

In an alternative embodiment, the steel floor is fully welded to the bottom side rail and to the front sill.

The base frame of the gooseneck portion of the container can be provided in different configurations, generally reducing or eliminating the need for a wooden floor in the outrigger area.

In one embodiment, the base frame comprises a pair of gooseneck rails or beams extending from the front panel/front end of the container to the bolster. Two gooseneck tracks form a channel called a gooseneck channel. Between the gooseneck rails in the gooseneck channel there are cross members called arcs of reduced height compared to known outriggers/cross members. At each side of the gooseneck channel, outrigger tracks are arranged between the gooseneck track and the bottom side track. This would form a sufficiently strong structure with only a few cross members in the form of cantilever beams, and possibly only one cantilever beam at each side of the base frame and extending from the bottom side track to the cantilever track, and the There is one outrigger at each side extending from the outrigger track to the gooseneck track.

When provided with an all steel floor, the structure is sufficiently strong even though the size of the base frame is reduced compared to previously known base frames for containers.

In another embodiment, the base frame includes a pair of gooseneck rails or beams extending from the front panel/front end of the container to the bolster. Two gooseneck tracks form a gooseneck channel. Between the gooseneck rails in the gooseneck channel there are provided a plurality of cross members in the form of arcs of reduced height compared to known outriggers. At each side of the gooseneck channel, a plurality of cantilever beams are provided between the gooseneck track and the bottom side track. In order to save material but still provide sufficient strength to the cantilever beam section, the cantilever beam can be shaped as an L-shaped profile or similar. The cantilever beam can also form a closed profile with the base plate.

Thereby, it is possible to manufacture a base frame for a shipping container in which the floor type can be easily configured.

Other embodiments and advantages are disclosed in the following description and claims.

Description of drawings

The invention will now be more fully described below, by way of example only, with reference to the accompanying drawings, in which:

Figure 1 schematically shows a prior art container floor inside a container seen from above;

Figure 2 schematically shows a longitudinal cut cut through the container, close to the side of the container;

Figure 3 schematically shows a perspective bottom view of the base frame of the front part of the container;

Fig. 4 schematically shows a sectional view along the line D-D in Fig. 3;

Figure 5 schematically shows a side view of the base frame, bolsters and floor for the front end of the container;

Fig. 6 schematically shows a cross-sectional cutout of the bolster region shown in the circle of Fig. 5;

Figure 7 schematically shows a cross-sectional cut of an embodiment of the bolster region;

Figure 8 schematically shows a cross-sectional cut of another embodiment of the bolster region;

Figure 9 schematically illustrates a perspective bottom view of an embodiment of the base frame of the front of the container;

Figure 10 schematically shows a sectional view along line D-D in Figure 9;

Figure 11 schematically illustrates a perspective bottom view of an embodiment of the base frame of the front of the container; and

FIG. 12 schematically shows a cross-sectional view along line D-D in FIG. 11 .

Detailed ways

A convenient embodiment of the invention will now be described.

A shipping container related to the prior art comprises a pair of side walls, a front end 2, a rear end 3, a top cover, bottom panels A, Q, R, T and a base frame 1 . The base frame 1 comprises two longitudinal bottom side rails 7 and a plurality of parallel bottom cross-members on which a base plate is placed and to which the base plate is secured by fastening means. At the end of the floor R, T and in the base frame 1 arranged in the front end 2 of the container, a heavier than normal cross member 4 forms one end of the so called gooseneck region T, R of the container. This heavier cross member is commonly referred to as bolster 4 . The bolster 4 forms a transition between the floor Q in the main part of the container and the floors R, T in the gooseneck part of the container. The floor in the gooseneck portion or front end 2 of the container covers the area from the bolster 4 to the front panel or sill 6 of the container and from one side of the container to the other. In the gooseneck section there is also a cross member called a cantilever, but here the cross member extends laterally from the bottom side rail 7 to the gooseneck rail. The gooseneck is usually provided with two parallel gooseneck tracks extending from the front of the container to the bolster 4 . Below the base plate and between the gooseneck tracks is formed a channel, called the gooseneck channel.

Such conventional 40ft (12192mm) dry containers with goosenecks may require the following floor dimensions:

Cantilever beam area (R+R at each side of T): L x W: 3252mm x 636mm

Rear end from threshold to bolster (3×A+Q): L×W: 8588mm×2320mm

This indicates that the floor element used to cover the cantilever beam area is not a module of the floor element used to cover the rest of the floor in the shipping container. Common dimensions for such elements are usually length x width: 2400mm x 1160mm.

The floor area in a prior art 40ft (12192mm) dry container as shown in Figure 1 would then be covered by a floor with six standard panels A having L x W: 2400mm x 1160mm; Two base plates Q cut in the size of × W: 1388 mm × 1160 mm; and four base plates R for the cantilever beam area, each cut in the size of L × W: 1626 mm × 636 mm. The area above the gooseneck track and the gooseneck channel is covered by a sheet metal T.

Another example of a common board length is plywood with dimensions length x width: 2440mm x 1220mm.

The invention relates to a base frame 1 for a shipping container, such a container is shown in Figure 2, wherein the container is cut longitudinally close to one side wall so that the floor can be seen. The base frame 1 comprises a front end 2 and a rear end 3 separated by a bolster 4; and a pair of bottom side rails or beams 7 extending at each side from the front end 2 to the rear end 3 at the bottom of the container. The base frame 1 comprises in the rear end 3 to the bolster 4 a plurality of parallel bottom cross members 5 on which the base plates A, B are placed and fixed to the cross members 5 by fastening means. The cross member 5 supports the bottom panels A, B to reduce downward depression of the bottom panels. The cross member 5 is welded to the bottom side rail 7 .

In the front end 2, the base frame 1 including the bottom side rail 7 also includes a front sill 6 forming the front end of the base frame 1; and a pair of gooseneck rails or beams 9 positioned in the longitudinal direction of the container, oriented parallel to the bottom side Track 7. One or more floor elements C, 11 are fastened to the gooseneck track 9 .

FIG. 3 shows the base frame 1 from the bottom side, which shows the bottom side structure of the front end of the base frame 1 .

The base frame 1 includes a pair of gooseneck rails 9 extending from the front sill 6 to the bolster 4 . Two gooseneck rails 9 form a gooseneck channel 8 . Between the gooseneck rails 9 in the gooseneck channel 8 there are cross members in the form of arcs 51 which have a reduced height compared to known outriggers/cross members. Between the gooseneck track 9 and the bottom side track 7 at each side of the gooseneck channel 8 there are also arcs 51 of reduced height compared to known outriggers/cross members.

The arc 51 can be arranged between the underside rail 7 and the gooseneck rail 9 and between the gooseneck rail 9 arranged in the gooseneck channel 8 .

In another embodiment, the arcs 51 may be aligned longitudinally across the full length of the base frame to facilitate welding to the steel floor, although this is not a requirement. The arc 51 may extend from one bottom side rail 7 to the other bottom side rail 7 in the full length direction. The gooseneck track 9 may then be arranged and welded to the spine (or top) of the arc 51, or the gooseneck track 9 may be provided with a cutout substantially corresponding to the shape of the arc 51, thereby leaving enough space for the gooseneck The neck rail 9 can be in contact with the steel base plate 11 in the gooseneck and with the profile of the arc 51 . The gooseneck track 9 may be welded to the steel base plate 11 and the arc 51 , or the gooseneck track 9 may be welded to the arc 51 only.

When the gooseneck rails 9 are welded to such a floor frame, a base frame 1 of high strength and rigidity is achieved while at the same time keeping the weight low compared to prior art base frames.

The structure can be further strengthened by providing the gooseneck track 9 with a plurality of gussets 53, wherein the gussets 53 are welded to the gooseneck track 9 and to the bottom surface of the base plate 11, or to the gooseneck track 9 and to the Top/ridge of arc 51 .

In FIG. 4 , a sectional view along line D-D in FIG. 3 is shown.

In the embodiment of the gooseneck end of the container as shown in FIG. 5 , a floor 11 in the form of a steel floor is arranged on the gooseneck track 9 and is further supported by the outrigger track 10 and extends from the front sill 6 to the bolster 4 Cover the gooseneck end of the container. The bottom plate 11 is fastened to the bolster 4 and the end of the bottom plate 11 facing the rear end 3 of the container is provided with a shelf portion 12 as shown in FIG. The threshold 61 at the rear end of the container is at a distance that is the full length of the floor A and half the length of the modules.

The shelf portion 12 comprises a substantially horizontal support portion 13 on which the end of the bottom plate B rests. Substantially horizontal means between -5 degrees and 5 degrees relative to horizontal.

The shelf portion 12 also includes a docking portion 14 . The abutment portion 14 forms a kind of stop to which the bottom plate B can abut. The docking portion 14 is substantially vertical. Substantially vertical means between 85 and 95 degrees relative to horizontal.

The base plate 11 and shelf portion 12 are supported and stabilized by a plurality of bolster gussets 15 distributed along the length of the bolster 4 from one side of the base frame 1 to the other. Base plate 11 and shelf portion 12 may be fastened to gusset 15 by welding or other suitable fastening means.

The gussets 15 are formed from plates and are fastened to the bolster 4, preferably by welding, in order to reinforce the bolster profile.

In an alternative embodiment as shown in FIG. 7 , the shelf portion 12 is formed from an L-shaped profile fastened to and supported by a plurality of bolster gussets 15 distributed along the length of the bolster 4 . The bolster 4 can be formed from an L-shaped steel profile, wherein the height of one of the legs of the L substantially corresponds to the height of the gooseneck rail 9 .

The back of the L of the bolster is welded to the gooseneck track 9 as well as the outrigger track 10 if the outrigger track 10 is required.

A bolster gusset 15 is arranged in the L in the bolster 4, and a cutout is made in the gusset 15 at the top corner of the gusset 15 facing away from the bolster 4, so that the gusset 15 can support the A steel base plate 11 or a shelf portion 12 formed from an L-shaped steel profile.

In an embodiment where the shelf portion 12 is provided by an L-profile, the steel floor 11 may be provided with a kind of nose 17 in the form of a slightly downwardly sloping end of the floor 11 facing the rear end 3 of the container. . The downward inclination of the nose 17 is in the interval comprised between 1° and 10° relative to the base plate 11 . In an embodiment, the inclination of the nose 17 is 4°.

The nose 17 extends from where it abuts with the floor 11 and is supported by the abutment portion 14 of the shelf portion 12 as shown in FIG. 7 and towards the rear end 3 of the container. The nose portion 17 is formed such that its length is sufficient to cover the gap between the bottom plate B and the abutment portion 14 of the shelf portion 12 and further extends from the edge of the bottom plate B by a certain distance. The nose portion 17 is preferably no longer than the support portion 13 of the shelf portion 12 seen in the longitudinal or transverse direction of the container.

The bevel of the nose 17 provides for the abutment of the edge of the nose 17 with the bottom plate B and makes it possible to compensate for deviations in the thickness of different bottom plates B.

In an embodiment, the nose 17 is chamfered to avoid cargo binding on slopes and to make cleaning easier.

In an alternative embodiment, the floor B in the rear of the container abuts the steel floor 11 above the bolster 4 such that the heights of the floor B and the surface of the steel floor 11 are substantially aligned.

The purpose of having a gap between the base plate B and the abutment portion 14 of the shelf portion 12 is to absorb longitudinal tolerances due to dimensional tolerances of the plates and related to the material expansion properties of the base plate B.

In one embodiment, the gap between the bottom plate B and the docking portion 14 is provided with an elastic member 16, such as a foam block or capable of compensating for the longitudinal extension of the bottom plate B in the rear of the container (from the bolster 4 of the container). Another flexible material shape to the rear end 3).

In other embodiments, the shelf portion 12 is formed by the bolster 4, as shown in FIG. 8 . Here the bolster 4 is formed to have an L-shaped lower portion and an L-shaped upper portion. The L-shaped upper portion forms a shelf portion 12, wherein the support portion 13 of the shelf portion is substantially parallel to the base portion of the L in the L-shaped lower portion of the bolster 4, and the abutment portion 14 is substantially parallel to the upright portion of the L in the L-shaped lower portion. up parallel. The bolster profile 4 is preferably formed as one part. The largest opening of the profile faces the gooseneck rail 9 . If it is desired to increase the strength of the bolster 4 , the bolster profile 4 may be provided with a plurality of gussets 15 distributed along the length of the bolster 4 and located within the bolster profile 4 .

In this embodiment, the gap between the bottom plate B and the abutment portion 14 is also provided with an elastic member 16, for example a foam block or capable of compensating for the longitudinal extension of the bottom plate B in the rear of the container (from the bolster of the container). 4 to the rear end 3) another flexible material shape.

In an alternative embodiment of the gooseneck end of the container, a floor 11 in the form of a steel floor is arranged on the gooseneck rail 9 .

In another embodiment as shown in FIG. 9 , the base frame 1 comprises a gooseneck track 9 extending from the front end (sill) 6 of the container to the bolster 4 . Two gooseneck rails 9 form a channel 8 called a gooseneck channel. Between the gooseneck rails 9 in the gooseneck channel 8 there are provided a plurality of cross members, called arcs 51 , of reduced height compared to known arcs. At each side of the gooseneck channel 8 , outrigger rails 10 are arranged between the gooseneck rail 9 and the bottom side rail 7 , said outrigger rails 10 being substantially parallel to the gooseneck rail and the bottom side rail 7 . This would form a sufficiently strong structure with only a few cross members in the form of outrigger beams 52 and possibly only one outrigger beam 52 at each side of the base frame 1 and extending from the bottom side track 7 to the outrigger track 10 , and there is one outrigger 52 extending from the outrigger track 10 to the gooseneck track 9 at each side of the base frame 1 .

In FIG. 10 , a sectional view along line D-D in FIG. 9 is shown.

In another embodiment, as shown in FIG. 11 , the base frame 1 comprises a pair of gooseneck rails 9 extending from the front sill 6 of the container to the bolster 4 . Two gooseneck rails 9 form a gooseneck channel 8 .

Between the gooseneck rails 9 in the gooseneck channel 8 there are provided a plurality of cross members in the form of arcs 51 of reduced height compared to known cantilever beams or cross members. At each side of the gooseneck channel 8 a plurality of cantilever beams 52 are arranged between the gooseneck track 9 and the bottom side track 7 .

In order to save material but still provide sufficient strength to the cantilever beam portion, the cantilever beam 52 may be shaped as an L-shaped piece or similar. The outrigger 52 can also form a closed profile with the base plate 11 . The bottom plate 11 here forms one side of the profiled part.

In all embodiments of the gooseneck end of the base frame 1 the arcs 51 may be arranged at non-uniform distances from each other. In the direction along the length of the container, the distance between the arcs 51 can decrease with the distance from the front sill 6, in such a way that the greater the distance between the arcs 51 and the front sill 6, the greater the distance to the lower sill. The distance of an arc 51 becomes smaller until the bolster 4 is reached.

The same applies to the cantilever beam 52 in the embodiment shown in FIG. 11 .

In FIG. 12 , a sectional view along line D-D in FIG. 11 is shown.

The steel floor 11 may be fully welded to the bottom side rail 7 and front sill 6, or it may be tack welded. The bottom plate 11 can also be riveted or fastened by other mechanical means.

The floor 11 is then sealed with sealant or foam tape to cover the gap between the gooseneck steel floor 11 and the bottom side rail 7 and front sill 6 .

Claims (12)

1. A base frame for a shipping container comprising a front end and a rear end separated by a bolster, the front end of the base frame comprising a pair of bottom side rails or beams positioned in the longitudinal direction of the container and a For gooseneck tracks or beams, the rear end of the base frame extends from the threshold to the bolster, characterized in that the gooseneck track (9) extends continuously from the front sill (6) to the bolster (4 ), and a plurality of arcs (51) continuously extend from the bottom side rail (7) in one side of the front end of the base frame (1) to the bottom in the opposite side of the front end of the base frame (1). Side rails (7). 2. Base frame according to claim 1, characterized in that the arcs are fixed to the underside of a steel floor (11) in the front end of the base frame (1), and the gooseneck track (9) Secured to the ridge or top of the arc (51). 3. The base frame according to claim 1, characterized in that the arc is fixed to the bottom surface of a steel floor (11) in the front end of the base frame (1), and the gooseneck track (9) A cutout substantially corresponding to the shape of said arc (51) is provided. 4. Base frame according to claim 2 or 3, characterized in that the gooseneck rail (9) is fixed to the arc (51 ) by welding. 5. The base frame according to claim 1 or 2 or 3 or 4, characterized in that the bolster (4) is provided with a shelf portion (12) arranged at a distance from the The threshold (61) is at a distance to support the ends of the base plates (A, B), said distance being a module of the full length (A) and half the length (B) of the base plate (A). 6. Base frame according to claim 5, characterized in that the shelf portion (12) is formed by the end of the steel floor (11) of the gooseneck portion (C) of the container (1). 7. Base frame according to claim 5, characterized in that the shelf portion (12) is formed by the bolster (4). 8. Base frame according to claim 5 or 6 or 7, characterized in that the shelf portion (12) is supported by a plurality of bolster gussets (15). 9. Base frame according to claim 5, characterized in that the shelf portion (12) is formed by an L-shaped profile fastened to the corners supporting the bolster (4) Support plate (15). 10. The base frame according to claim 5 or 7 or 9, characterized in that, the steel bottom plate (11) is provided with a slight direction towards the rear end (3) of the bottom plate (11) facing the container. Nose (17) in the form of a downwardly inclined end with an inclination in the interval comprised between 1° and 10° relative to said base plate (11). 11. Base frame according to one or more of claims 5 to 10, characterized in that said steel floor (11) is fully welded to said bottom side rails (7) and fully welded to the front sill (6). 12. Base frame according to one or more of claims 1 to 11, characterized in that, with the arc-shaped (51), for the arc (51) arranged at the end of the gooseneck channel (8) facing the front sill (6) of the base frame (1), the arc (51) The distance between is larger.