Shipping container

Abstract

The present invention relates to a shipping container. By making improvements on its structure: to add longitudinal members in the base frame, and/or to increase the wave height D between the wave crest and wave trough of the corrugated plate of the side panels, and/or to adopt steel plate in the floor, on the premise of passing ISO test, it provides a container which is lighter in tare weight, less in material consumed and lower in production cost.

What is claimed is:  
     
         1 . A shipping container, comprising a pair of side walls, a rear end, a front end, a roof, a floor and a base frame; said base frame further comprising two longitudinal bottom side rails and numbers of parallel bottom cross members, wherein said base frame further includes at least one longitudinal member, said longitudinal member is in parallel with said bottom side rails, and connected with at least two of the bottom cross members.  
     
     
         2 . A shipping container, comprising a pair of side walls, a rear end, a front end, a roof, a floor and a base frame; said base frame further comprising two longitudinal bottom side rails and numbers of parallel bottom cross members, wherein said floor is made up of corrugated steel floor.  
     
     
         3 . A shipping container, comprising a pair of side walls, a rear end, a front end, a roof, a floor and a base frame; the cross section of said side walls is a corrugated structure made up by a number of identical wave crests, slopes and wave troughs, wherein the wave height D between said wave crest and wave trough is 36<D≦54 mm.  
     
     
         4 . A shipping container according to any of claims  1 - 3 , wherein said base frame may include at least two longitudinal members.  
     
     
         5 . A shipping container according to  claim 4 , wherein the space between two longitudinal members is no longer than 600 mm.  
     
     
         6 . A shipping container according to  claim 5 , wherein the space between two longitudinal members is no longer than 300 mm.  
     
     
         7 . A shipping container according to  claim 6 , wherein the space between two longitudinal members is no longer than 180 mm.  
     
     
         8 . A shipping container according to any of claims  1 - 3 , wherein some slots with openings are made on the bottom cross members in regular interval, the entire longitudinal members pass through said slots and be welded to the bottom cross members.  
     
     
         9 . A shipping container according to any of claims  1 - 3 , wherein the longitudinal members are disconnected and then welded to the bottom cross members.  
     
     
         10 . A shipping container according to any of claims  1 - 3 , wherein said longitudinal members may be distributed non continuously.  
     
     
         11 . A shipping container according to  claim 10 , wherein said longitudinal members are shorter than said bottom side rails, and only distributed within partial area of the entire base frame.  
     
     
         12 . A shipping container according to any one of claims  1 - 3 , wherein said base frame may further include supporting beams tilted installed at the corner of the cross made up by the longitudinal members and the bottom cross members.  
     
     
         13 . A shipping container according to  claim 12 , wherein the cross section area of said bottom cross members is larger than that of the longitudinal members.  
     
     
         14 . A shipping container according to any one of claim  1 - 3 , wherein only one end of said bottom cross member is connected with said bottom side rail, the other end is connected with said longitudinal member.  
     
     
         15 . A shipping container according to any one of claims  1 - 3 , wherein said floor is made up of corrugated steel floor which is directly paved on said bottom cross members, and welded to the external side of the bottom cross members, constituting an integral rigid structure.  
     
     
         16 . A shipping container according to  claim 15 , wherein said bottom cross members may be made of steel bars of C-shape cross sectional form.  
     
     
         17 . A shipping container according to  claim 15 , wherein the cross sectional form of the bottom cross members is L-shaped, at the edge of the bottom cross member, there installed many convex teeth matching with the concave grooves of the corrugated floor, helping the bottom cross members to be welded to the corrugated steel floor.  
     
     
         18 . A shipping container according to  claim 15 , wherein there are non metallic stuffing filled within all the grooves of the corrugated steel floor.  
     
     
         19 . A shipping container according to  claim 18 , wherein said non metallic stuffing may be made of wood, or foam, or plastics.  
     
     
         20 . A shipping container according to  claim 15 , wherein thin plate is paved on the corrugated steel floor.  
     
     
         21 . A shipping container according to  claim 20 , wherein said thin plate may be made of thin wooden plate, composite plate or steel plate.  
     
     
         22 . A shipping container according to  claim 15 , wherein said non metallic stuffing is filled within some of the grooves of the corrugated steel floor.  
     
     
         23 . A shipping container according to  claim 22 , wherein the grooves with non metallic stuffing filled in are in a certain proportion to the grooves without non metallic stuffing filled in.  
     
     
         24 . A shipping container according to  claim 22 , wherein the grooves with non metallic stuffing filled in are not in a certain proportion to the grooves without non metallic stuffing filled in.  
     
     
         25 . A shipping container according to  claim 18  or  22 , wherein the non metallic stuffing filled in the grooves of the corrugated steel floor is continuously distributed along the grooves.  
     
     
         26  A shipping container according to  claim 18  or  22 , wherein the non metallic stuffing filled in the grooves of the corrugated steel floor is incontinuously distributed along the grooves.  
     
     
         27 . A shipping container according to  claim 18  or  22 , wherein said corrugated steel floor may be continuous, the non metallic stuffing completely filled in the grooves of the corrugated steel floor.  
     
     
         28 . A shipping container according to  claim 18  or  22 , wherein said corrugated steel floor is disconnected at the position where the non metallic stuffing is filled, said non metallic stuffing is held within a concavity which is formed by two adjacent disconnected corrugated floors and has an opening at its bottom.  
     
     
         29 . A shipping container according to  claim 15 , wherein the wavelength of each corrugation of the steel floor is not equal to each other, and said non metallic stuffing is filled in the wider grooves.  
     
     
         30 . A shipping container according to  claim 15 , wherein the wavelength of each corrugation of the corrugated steel floor is equal to each other.  
     
     
         31 . A shipping container according to any one of claims  1 - 3 , wherein the thickness of said side panel is 0.8 0.2 mm.  
     
     
         32 . A shipping container according to any one of claims  1 - 3 , wherein the length I of said slope projection on said wave trough plane is 0≦I≦25 mm.  
     
     
         33 . A shipping container according to any one of claims  3  or  31  or  32 , wherein the wave height D between said wave crest and wave trough is 38 mm, the length I of said slope projection on said wave trough plane is 15 mm.  
     
     
         34 . A shipping container according to any one of claims  3  or  31  or  32 , wherein the wave height D between said wave crest and wave trough is 45 mm, the length I of said slope projection on said wave trough plane is 12 mm.  
     
     
         35 . A shipping container according to any one of claims  1 - 3 , wherein said bottom cross members, longitudinal members and support beams can be made of steel bars whose cross section can be L-shape, I-shape, T-shape, U-shape, C-shape or square shape.  
     
     
         36 . A shipping container according to  claim 1  or  claim 35  or any one of claims  4 - 9 , wherein said floor is made of steel plate.  
     
     
         37 . A shipping container according to  claim 36 , wherein the thickness of said floor is no thicker than 4 mm.