tank container

Abstract

The application provides a tank container, which comprises a tank body and two end frames supporting two ends of the tank body respectively, and the end of the tank body is outwardly beyond the end frame. The tank container further comprises a protection assembly connected to the bottom corner of the end frame, the protection assembly outwardly protrudes from the end frame, and the protection assembly is higher than the lower surface of the bottom corner of the end frame. The protection assembly comprises a side protection pipe, an outer protection pipe and a bottom protection pipe. The side protection pipe is connected to the bottom corner of the end frame and extends along the length direction of the tank body; the outer protection pipe is obliquely connected to the corner column of the end frame and the side protection pipe; the bottom protection pipe has a first end and a second end, the first end is connected to the end lower beam of the end frame, the second end is connected to the bottom end of the outer protection pipe or the end of the side protection pipe or both the bottom end of the outer protection pipe and the end of the side protection pipe, and the bottom protection pipe downwardly beyonds the lower surface of the side protection pipe. The tank body is protected by the protection assembly which protrudes from the end frame and encloses the outside of the end of the tank body.

Description

TECHNICAL FIELD

[0001] The present application relates to the field of containers, in particular to a tank container. BACKGROUND

[0002] Tank containers are widely used in the logistics industry due to their versatility and high efficiency. Tank containers usually have a frame and a tank body. The tank body of an exchangeable tank container or a large-volume tank container exceeds the frame. During transportation and use, the tank body structure cannot be effectively protected, which cannot ensure the safety of the loaded goods. SUMMARY

[0003] The purpose of the present application is to provide a tank container to solve the problem that the frame cannot effectively protect the tank body in the prior art.

[0004] To solve the above technical problems, the present application provides a tank container, which comprises a tank body and two end frames supporting two ends of the tank body respectively, and the end of the tank body exceeds the end frame outwardly; the tank container further comprises a protection assembly connected to the bottom corner of the end frame, the protection assembly protrudes outwardly from the end frame, and the protection assembly is higher than the lower surface of the bottom corner of the end frame; the protection assembly comprises a side protection pipe connected to the bottom corner of the end frame and extending along the length direction of the tank body, an outer protection pipe obliquely connected to the corner column of the end frame and the side protection pipe, and a bottom protection pipe having a first end and a second end, the first end being connected to the end lower beam of the end frame, the second end being connected to the bottom end of the outer protection pipe or the end of the side protection pipe or both, and the bottom protection pipe exceeding the lower surface of the side protection pipe downwardly.

[0005] In one embodiment, the height interval between the lower surface of the side protection pipe and the lower surface of the bottom corner is 5-120mm.

[0006] In one embodiment, the first end is flush with the lower surface of the end lower beam or exceeds the lower surface of the end lower beam upwardly, and the second end exceeds the lower surface of the end lower beam downwardly.

[0007] In one embodiment, the height interval between the second end and the lower surface of the bottom corner is 5-30mm.

[0008] In one embodiment, the second end is connected to the bottom end of the outer protection pipe, a connecting short pipe is connected between the second end and the outer protection pipe, the connecting short pipe is connected below the outer protection pipe, and the lower surface of the connecting short pipe is flush with the lower surface of the bottom protection pipe.

[0009] In one of the embodiments, the second end connects the end of the side protection pipe, and a connecting short pipe is connected between the second end and the side protection pipe, the connecting short pipe is connected to the end of the side protection pipe, and the bottom of the connecting short pipe is connected to the top of the second end of the bottom protection pipe.

[0010] In one of the embodiments, the second end connects the end of the side protection pipe, and a connecting short pipe is connected between the second end and the side protection pipe, the connecting short pipe is connected to the end of the side protection pipe, and the bottom of the connecting short pipe is connected to the top of the second end of the bottom protection pipe.

[0011] In one of the embodiments, the bottom protection pipe is linear and forms a triangle with the end lower beam and the side protection pipe.

[0012] In one of the embodiments, the bottom protection pipe comprises a first pipe segment and a second pipe segment connected to each other, the first pipe segment extends outward along the length direction of the tank body, the second pipe segment extends along the width direction of the tank body, the first pipe segment is connected to the end lower beam, and the second pipe segment is connected to the bottom end of the outer protection pipe or / and the end of the side protection pipe.

[0013] In one of the embodiments, the side protection pipe is a square pipe or a circular pipe, the outer protection pipe is a square pipe or a circular pipe, and the bottom protection pipe is a square pipe or a circular pipe.

[0014] From the above technical solution, the advantages and positive effects of the present application are as follows:

[0015] The tank container of the present application comprises a tank body, an end frame and a protection assembly, the protection assembly protrudes out of the end frame and encloses the outside of the end of the tank body, and fully protects the tank body. The protection assembly is higher than the upper side of the lower surface of the end frame, that is, the bottom of the protection assembly is lifted relative to the end frame. By lifting the protection assembly, the damage of the protection assembly caused by the dislocation of the corner fittings of the end frame during the hoisting and stacking of the tank container is avoided. In the protection assembly, the lower surface of the bottom protection pipe is lower than the lower surface of the side protection pipe, that is, the bottom protection pipe is pressed down relative to the side protection pipe, and therefore the protection range of the protection assembly is expanded, and the bottom box valve and other components of the tank container are fully protected from damage during hoisting, transportation and use. BRIEF DESCRIPTION OF DRAWINGS

[0016] Figure 1 It is a front view of the first embodiment of the tank container of the present application;

[0017] Figure 2 It is a partial top view of the first embodiment of the tank container of the present application;

[0018] Figure 3 is a partial side view of the first embodiment of the tank container of the present application;

[0019] Figure 4 is a structural schematic view of the protection assembly in the first embodiment of the tank container of the present application;

[0020] Figure 5 is a structural schematic view of another scheme of the protection assembly in the first embodiment of the tank container of the present application;

[0021] Figure 6 is a front view of the second embodiment of the tank container of the present application;

[0022] Figure 7 is a partial top view of the second embodiment of the tank container of the present application;

[0023] Figure 8 is a partial side view of the second embodiment of the tank container of the present application.

[0024] Wherein, the reference signs are explained as follows: 1, tank container; 11, tank body; 12, end frame; 121, corner post; 122, end lower beam; 123, bottom corner piece; 124, reinforcing beam; 13, protection assembly; 131, side protection pipe; 132, outer protection pipe; 133, bottom protection pipe; 134, connecting short pipe; 3, ladder; 31, bottom horizontal rod.

[0025] 2, tank container; 21, tank body; 22, end frame; 221, corner post; 222, end lower beam; 223, bottom corner piece; 224, reinforcing beam; 23, protection assembly; 231, side protection pipe; 232, outer protection pipe; 233, bottom protection pipe; 2331, first pipe section; 2332, second pipe section; 234, connecting short pipe. DETAILED DESCRIPTION

[0026] The typical embodiments embodying the features and advantages of the present application will be described in detail in the following description. It should be understood that the present application can be practiced with various modifications and alterations within the scope thereof and such claims and embodiments thereof are not construed as limited to the description set forth herein but are to be accorded the full scope consistent with the principles of the present application as defined by the appended claims and their equivalents.

[0027] In order to further illustrate the principles and structure of the present application, the preferred embodiments of the present application will be described in detail in conjunction with the accompanying drawings.

[0028] First embodiment of the tank container

[0029] Referring to Figures 1-4 , the present embodiment provides a tank container 1, comprising a tank body 11, two end frames 12 respectively supporting two ends of the tank body 11 and a protection assembly 13.

[0030] The end of the tank body 11 extends outward beyond the end frame 12. Wherein, along the length direction of the tank body 11, the opposite direction of the two end frames 12 is the inner side, and the direction away from each other is the outer side. The following is no special description, the definition of the inner side and the outer side is consistent with this.

[0031] The end frame 12 includes an end upper beam, an end lower beam 122 and two mutually parallel corner columns 121, which are enclosed by two top corner pieces, two bottom corner pieces 123 to form a square frame structure. Wherein, the lower surface of the bottom corner piece 123 is lower than the lower surface of the end lower beam 122, therefore, the lower surface of the end frame 12 refers to the lower surface of the bottom corner piece 123.

[0032] Specifically, the top corner piece and the bottom corner piece 123 are provided with corner lock holes, which are used for hoisting, handling, fixing and stacking of the tank container 1.

[0033] The end upper beam is connected between the two top corner pieces, and the end lower beam 122 is connected between the two bottom corner pieces 123. Wherein, the end lower beam 122 can be split type, and the end lower beam 122 can also be integral type. The form of the end lower beam 122 is not limited here, and the end lower beam 122 connected between the two bottom corner pieces 123.

[0034] The end lower beam 122 and the corner column 121 are further provided with a reinforcing beam 124 for increasing the strength of the end frame 12. The reinforcing beam 124 is parallel to the end lower beam 122 and located above the end lower beam 122.

[0035] The corner column 121 is connected between the top corner piece and the bottom corner piece 123. Specifically, in the embodiment, the inner side of the corner column 121 is further provided with a recess to avoid the tank body 11, and further to let the two ends of the tank body 11 extend out of the end frame 12.

[0036] The protection assembly 13 is connected to the corner of the bottom of the end frame 12 and protrudes outward beyond the end frame 12 to enclose the outer side of the end of the tank body 11, and the protection assembly 13 is higher than the lower surface of the bottom corner piece 123, thereby protecting the tank body 11. In the embodiment, the two end frames 12 are connected with the protection assembly 13, and in other embodiments, one of the end frames 12 can also be connected with the protection assembly 13. For example, the end frame 12 located at the rear end is provided with the protection assembly 13, thereby protecting the part of the tank body 11 located at the rear end extending out of the end frame 12.

[0037] Specifically, the protection assemblies 13 at the two corners of each end frame 12 are symmetrically distributed about the transverse center line of the end frame 12. And the two protection assemblies 13 have a space therebetween, therefore, along the width direction of the tank container 1, the two protection assemblies 13 have a space therebetween, and the space can be provided with an operation box for loading and unloading materials.

[0038] Each protection assembly 13 comprises a side protection pipe 131, a bottom protection pipe 133, an outer protection pipe 132 and a connecting short pipe 134 connecting the bottom protection pipe 133 and the outer protection pipe 132.

[0039] The side protection pipe 131 is connected to the bottom of the end frame 12 and extends along the length direction of the tank body 11, i.e. one end of the side protection pipe 131 is connected to the bottom of the end frame 12 and the other end extends outward along the length direction of the tank body 11. In the embodiment, the extending direction of the side protection pipe 131 is parallel to the length direction of the tank body 11. In other embodiments, the side protection pipe 131 can also have a certain angle between the length direction of the tank body 11, i.e. the side protection pipe 131 extends slightly upward or slightly downward along the length direction of the tank body 11, etc. For example, the angle between the side protection pipe 131 and the horizontal plane is 0-10°.

[0040] Specifically, the lower surface of the side protection pipe 131 is above the lower surface of the bottom corner piece 123, i.e. the side protection pipe 131 is raised relative to the bottom of the end frame 12. Through the raised design of the side protection pipe 131, the damage of the side protection pipe 131 caused by the misalignment of the bottom corner piece 123 during the hoisting and stacking of the tank container 1 is avoided, thereby ensuring the safety of the side protection pipe 131.

[0041] The height interval between the lower surface of the side protection pipe 131 and the lower surface of the bottom corner piece 123 is 5-120 mm. Specifically, the side protection pipe 131 can be connected only with the corner column 121, at this time, the height interval between the lower surface of the side protection pipe 131 and the lower surface of the bottom corner piece 123 is maximum, i.e. 120 mm, because the height of the bottom corner piece 123 is about 120 mm, so the lower surface of the side protection pipe 131 is close to the upper surface of the bottom corner piece 123. The side protection pipe 131 can also be connected only with the bottom corner piece 123, at this time, the upper surface of the side protection pipe 131 is lower than the upper surface of the bottom corner piece 123 or flush. Referring to Figure 3 and Figure 4 In the embodiment, the side protection pipe 131 is connected with the bottom corner piece 123 and the corner column 121 at the same time, and the lower surface of the side protection pipe 131 is between the upper surface and the lower surface of the bottom corner piece 123.

[0042] In the embodiment, the side protection pipe 131 is a square pipe, and the material of the side protection pipe 131 is stainless steel. In other embodiments, the side protection pipe 131 can also be a round pipe, a combination of square pipe and round pipe. The material of the side protection pipe 131 can also be carbon steel, a combination of stainless steel and carbon steel.

[0043] Referring to Figure 3 and Figure 4The outer protection pipe 132 is connected to the corner post 121 and the side protection pipe 131 at an inclined angle. Specifically, the outer protection pipe 132 has a top end and a bottom end, the top end is connected to the corner post 121, and the bottom end is connected to the side protection pipe 131. In this embodiment, the top end is below the middle of the corner post 121 and extends downward at an inclined angle.

[0044] In this embodiment, the outer protection pipe 132 is a square pipe, and the material of the outer protection pipe 132 is stainless steel. In other embodiments, the outer protection pipe 132 can also be a round pipe, a combination of a square pipe and a round pipe. The material of the outer protection pipe 132 can also be carbon steel, a combination of stainless steel and carbon steel.

[0045] Continuing to refer to Figure 3 and Figure 4 , the bottom protection pipe 133 is connected to the end lower beam 122 and the bottom end of the outer protection pipe 132. Specifically, the bottom protection pipe 133 has a first end and a second end, the first end is connected to the end lower beam 122, and the second end is connected to the bottom end of the outer protection pipe 132. Among them, the lower surface of the first end is flush with the lower surface of the end lower beam 122, the lower surface of the second end protrudes downward beyond the lower surface of the end lower beam 122, and the second end is above the lower surface of the bottom corner piece 123, that is, the bottom protection pipe 133 is pressed downward relative to the side protection pipe 131, thereby expanding the protection range of the protection assembly 13 and fully ensuring that the bottom valve and other components of the tank container 1 are not damaged during hoisting and transportation and use.

[0046] Specifically, the height interval between the lower surface of the second end of the bottom protection pipe 133 and the lower surface of the bottom corner piece 123 is 5mm-30mm, so that the outwardly protruding part of the bottom protection pipe 133 has a certain height difference with the bottom corner piece 123, which ensures the safety of the bottom protection pipe 133 during hoisting and stacking of the tank container 1, and also has a height difference between the bottom protection pipe 133 and the side protection pipe 131, which ensures the safety of the protection assembly 13 and the protection range of the protection assembly 13.

[0047] In this embodiment, the bottom protection pipe 133 is in a straight line shape and forms a triangle with the end lower beam 122 and the side protection pipe 131. Specifically, in this embodiment, the bottom protection pipe 133 is a square pipe, and the material of the bottom protection pipe 133 is stainless steel. In other embodiments, the bottom protection pipe 133 can also be a round pipe, a combination of a square pipe and a round pipe. The material of the bottom protection pipe 133 can also be carbon steel, a combination of stainless steel and carbon steel.

[0048] The connecting short pipe 134 connects the second end of the bottom protection pipe 133 with the bottom end of the outer protection pipe 132, and increases the connecting strength between the two. Specifically, the connecting short pipe 134 is connected below the outer protection pipe 132, and the lower surface of the connecting short pipe 134 is flush with the lower surface of the bottom protection pipe 133. In this embodiment, the connecting short pipe 134 is square, and the outer end of the connecting short pipe 134 is also provided with a sealing plate, which seals the outer end of the connecting short pipe 134.

[0049] In another embodiment, referring to Figure 5 The tank container 1 is also provided with a ladder 3 at the rear end, which is used for personnel to climb to the top of the tank container 1 to work. The ladder 3 has two vertical poles and a plurality of horizontal poles connected vertically between the two vertical poles. Among them, the connecting end of the bottom horizontal pole 31 at the bottom is connected with the protection assembly 13. Specifically, the connecting end of the bottom horizontal pole 31 is connected with the end of the side protection pipe 131, the bottom end of the outer protection pipe 132, and the second end of the bottom protection pipe 133. The bottom protection pipe 133 is located below the bottom horizontal pole 31, the bottom end of the outer protection pipe 132 is located at the top of the bottom horizontal pole 31, and the side protection pipe 131 is located at the inner side of the bottom horizontal pole 31. With the above design, the side protection pipe 131 is raised, the bottom protection pipe 133 is lowered, the protection range of the protection assembly 13 is fully expanded, and at the same time, the damage of the protection assembly 13 caused by the misalignment of the bottom corner piece 123 when the tank container 1 is stacked is avoided.

[0050] Further, the bottom of the bottom horizontal pole 31 is also provided with a connecting short pipe 134, which connects the second end of the bottom protection pipe 133 with the bottom horizontal pole 31, and increases the strength of the protection assembly 13.

[0051] In other embodiments, each protection assembly 13 comprises a side protection pipe 131, a bottom protection pipe 133 and an outer protection pipe 132, i.e. the side protection pipe 131, the bottom protection pipe 133 and the outer protection pipe 132 are connected and fixed without the connecting short pipe 134. For example, the second end of the bottom protection pipe 133 is connected with the bottom end of the outer protection pipe 132, the end of the side protection pipe 131 is connected with the outer protection pipe 132, and the second end of the bottom protection pipe 133 is spaced apart from the end of the side protection pipe 131. With the above design, the stress concentration between the side protection pipe 131, the outer protection pipe 132 and the bottom protection pipe 133 is avoided. It is also possible that the bottom end of the outer protection pipe 132 is connected with the side protection pipe 131, the end of the side protection pipe 131 is connected with the second end of the bottom protection pipe 133, and the top of the bottom protection pipe 133 is tightly connected with the bottom of the side protection pipe 131, and the bottom end of the outer protection pipe 132 is spaced apart from the second end of the bottom protection pipe 133. It is also possible that the second end of the bottom protection pipe 133 is simultaneously connected with the end of the side protection pipe 131 and the bottom end of the outer protection pipe 132. For example, the end of the side protection pipe 131 is connected with the top of the bottom protection pipe 133, and the bottom end of the outer protection pipe 132 extends outwardly to be connected with the outer side of the bottom protection pipe 133.

[0052] Further, the connection between the side protection pipe 131, the bottom protection pipe 133 and the outer protection pipe 132 can be achieved by the connecting short pipe 134. For example, the connecting short pipe 134 is connected with the end of the side protection pipe 131, the top of the second end of the bottom protection pipe 133 is connected with the bottom of the connecting short pipe 134, and the bottom end of the outer protection pipe 132 is connected with the side protection pipe 131.

[0053] It is also possible that the top of the connecting short pipe 134 is connected with the bottom of the outer protection pipe 132, the inner side of the connecting short pipe 134 is connected with the end of the side protection pipe 131, and the bottom of the connecting short pipe 134 is connected with the top of the bottom protection pipe 133.

[0054] In the tank container 1, the protection assembly 13 and the end frame 12 can be detachably connected as needed, i.e. the side protection pipe 131, the outer protection pipe 132 and the bottom protection pipe 133 are all detachably connected, or they can be welded, i.e. the side protection pipe 131, the outer protection pipe 132 and the bottom protection pipe 133 are all welded, or one or two of them are welded and the remaining one is detachably connected. The side protection pipe 131, the outer protection pipe 132 and the bottom protection pipe 133 in the protection assembly 13 can also be all detachably connected, all welded, or a combination of welding and detachable connection.

[0055] Second embodiment of the tank container

[0056] Referring to Figures 6-8 The tank container 2 of the present embodiment is the same as the tank container of the first embodiment in that the tank container 2 comprises a tank body 21, two end frames 22 supporting two ends of the tank body 21 respectively, and a protection assembly 23.

[0057] The end frame 22 comprises an end upper beam, an end lower beam 222 and two corner columns 221 parallel to each other, which are enclosed by two top corner fittings and two bottom corner fittings 223 to form a square frame structure. A reinforcing beam 224 is arranged between the corner column 221 and the end lower beam 222 to increase the connection strength therebetween.

[0058] The protection assembly 23 comprises a side protection pipe 231, an outer protection pipe 232, a bottom protection pipe 233 and a connecting short pipe 234. The features of the tank container 2 of the present embodiment that are the same as those of the tank container of the first embodiment can be referred to the tank container of the first embodiment and will not be described in detail.

[0059] The difference between the present embodiment and the tank container of the first embodiment is that the bottom protection pipe 233 of the present embodiment comprises a first pipe section 2331 extending outwardly along the length direction of the tank body 21 and a second pipe section 2332 extending along the width direction of the tank body 21. The first pipe section 2331 is connected to the end lower beam 222, and the second pipe section 2332 is connected to the bottom end of the outer protection pipe 232. The second pipe section 2332 can also be connected to the end of the side protection pipe 231, or simultaneously connected to the bottom end of the outer protection pipe 232 and the end of the side protection pipe 231.

[0060] From the above technical solution, the advantages and positive effects of the present application are that:

[0061] The tank container of the present application comprises a tank body, an end frame and a protection assembly, the protection assembly protruding out of the end frame and enclosing the outside of the end of the tank body, thereby fully protecting the tank body. The protection assembly is higher than the upper surface of the lower surface of the end frame, i.e. the bottom of the protection assembly is raised relative to the end frame. By raising the protection assembly, the damage of the protection assembly caused by the dislocation of the corner fittings of the end frame during hoisting and stacking is avoided. In the protection assembly, the lower surface of the bottom protection pipe is lower than the lower surface of the side protection pipe, i.e. the bottom protection pipe is pressed down relative to the side protection pipe, thus expanding the protection range of the protection assembly and fully ensuring that the bottom valve and other components of the tank container are not damaged during hoisting, transportation and use.

[0062] While the application has been described with reference to several exemplary embodiments, it is to be understood that the use of other words or terminologies used herein is intended to convey a practical and conceptual understanding of the present application to others skilled in the art. As such, it is submitted that the foregoing description and examples have been apparent in terms of their structures and functions, and are susceptible to various changes without departing from the spirit or essence thereof. Consequently, it is respected that all equivalent variations and modifications are intended to be included within the scope of the appended claims and their equivalents.

Claims

1. A tank container, comprising a tank body and end frames supporting both ends of the tank body, wherein the ends of the tank body extend outward beyond the end frames; characterized in that, The tank container further includes a protective assembly connected to the bottom corner of the end frame, the protective assembly protruding outward from the end frame and being higher than the lower surface of the bottom corner piece of the end frame; the protective assembly includes: Side protective tubes are connected to the bottom corner of the end frame and extend along the length of the tank body; The external protective tube is obliquely connected to the corner post of the end frame and the side protective tube; and, The bottom protective tube has a first end and a second end. The first end is connected to the lower end beam of the end frame, and the second end is connected to the bottom end of the outer protective tube or to the end of the side protective tube or to both the bottom end of the outer protective tube and the end of the side protective tube. The bottom protective tube extends downward beyond the lower surface of the side protective tube. The first end is flush with or extends upward beyond the lower surface of the lower end beam. The second end is connected to the bottom end of the outer protective tube. A connecting short tube is connected between the second end and the outer protective tube. The connecting short tube is connected below the outer protective tube, and the lower surface of the connecting short tube is flush with the lower surface of the bottom protective tube.

2. A tank container, comprising a tank body and end frames supporting both ends of the tank body, wherein the ends of the tank body extend outward beyond the end frames; characterized in that, The tank container further includes a protective assembly connected to the bottom corner of the end frame, the protective assembly protruding outward from the end frame and being higher than the lower surface of the bottom corner piece of the end frame; the protective assembly includes: Side protective tubes are connected to the bottom corner of the end frame and extend along the length of the tank body; The external protective tube is obliquely connected to the corner post of the end frame and the side protective tube; and, The bottom protective tube has a first end and a second end. The first end is connected to the lower end beam of the end frame, and the second end is connected to the bottom end of the outer protective tube or to the end of the side protective tube or to both the bottom end of the outer protective tube and the end of the side protective tube. The bottom protective tube extends downward beyond the lower surface of the side protective tube. The first end is flush with or extends upward beyond the lower surface of the lower end beam. The second end is connected to the end of the side protective tube. A connecting short tube is connected between the second end and the side protective tube. The connecting short tube is connected to the end of the side protective tube, and the bottom of the connecting short tube is connected to the top of the second end of the bottom protective tube.

3. A tank container, comprising a tank body and end frames supporting both ends of the tank body, wherein the ends of the tank body extend outward beyond the end frames; characterized in that, The tank container further includes a protective assembly connected to the bottom corner of the end frame, the protective assembly protruding outward from the end frame and being higher than the lower surface of the bottom corner piece of the end frame; the protective assembly includes: Side protective tubes are connected to the bottom corner of the end frame and extend along the length of the tank body; The external protective tube is obliquely connected to the corner post of the end frame and the side protective tube; and, The bottom protective tube has a first end and a second end. The first end is connected to the lower end beam of the end frame, and the second end is connected to the bottom end of the outer protective tube or to the end of the side protective tube or to both the bottom end of the outer protective tube and the end of the side protective tube. The bottom protective tube extends downward beyond the lower surface of the side protective tube. The first end is flush with or extends upward beyond the lower surface of the lower end beam. The second end connects the bottom end of the outer protective tube and the end of the side protective tube. A connecting short tube connects the second end to the outer protective tube and the side protective tube. The top of the connecting short tube connects to the bottom of the outer protective tube, the inner side of the connecting short tube connects to the side protective tube, and the bottom of the connecting short tube connects to the bottom protective tube.

4. The tank container according to claim 1, 2 or 3, characterized in that, The height distance between the lower surface of the side protective tube and the lower surface of the bottom corner piece is 5 to 120 mm.

5. The tank container according to claim 1, 2 or 3, characterized in that, The second end extends downward beyond the lower surface of the lower beam.

6. The tank container according to claim 1, 2 or 3, characterized in that, The height distance between the second end and the lower surface of the bottom corner piece is 5 to 30 mm.

7. The tank container according to claim 1, 2 or 3, characterized in that, The bottom protective tube is straight and forms a triangle with the lower end beam and the side protective tube.

8. The tank container according to claim 1, 2 or 3, characterized in that, The bottom protective pipe includes a first pipe section and a second pipe section connected to each other. The first pipe section extends outward along the length direction of the tank body, and the second pipe section extends along the width direction of the tank body. The first pipe section is connected to the lower end beam, and the second pipe section is connected to the bottom end of the outer protective pipe and / or the end of the side protective pipe.

9. The tank container according to claim 1, 2 or 3, characterized in that, The side protective tube is a square tube or a round tube, the outer protective tube is a square tube or a round tube, and the bottom protective tube is a square tube or a round tube.

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