tank container

Abstract

The present invention discloses a tank container comprising a tank body and a frame. The tank body is connected to connecting rings at both ends. The frame surrounds the tank body and includes two end frames. The end frames are provided with a plurality of inclined support plates for connecting to the connecting rings. The inclined support plates are plate-shaped structures, and each of the inclined support plates is provided with an arc at the connection with the end frames. The end frames of the tank container of the present invention leave sufficient space for installing other accessories.

Description

Technical Field

[0001] The present invention relates to the field of large storage and transportation containers, and in particular to a tank container. Background Art

[0002] Tank containers are widely used for transporting liquid or gaseous cargo due to their economical, convenient, and environmentally friendly advantages. Tank containers typically consist of a tank body and a frame. The frame typically includes front and rear frames, each of which is equipped with a square tube structure that connects to the tank body. This square tube structure is thick and bulky, occupying a large space, leaving insufficient space at the ends of the frame, making it difficult to install other accessories. Summary of the Invention

[0003] In order to solve the problem in the related art that the square tube structures on the front and rear end frames occupy a large space and are inconvenient for installing other accessories, the present invention provides a tank container.

[0004] The present invention provides a tank container, comprising:

[0005] a tank body, with connecting rings connected at both ends;

[0006] A frame surrounds the tank body, and the frame includes two end frames. The end frames are provided with a plurality of inclined support plates for connecting with the connecting ring. The inclined support plates are plate-like structures, and a circular arc is provided at the connection between each inclined support plate and the end frame.

[0007] Optionally, the inclined support plate has an outer edge facing a corner of the end frame and an inner edge facing the center of the end frame, the arc is provided at the connection between the outer edge and the end frame, and the minimum distance between the outer edge and the inner edge and the connecting ring is not less than 20 mm.

[0008] Optionally, a circular arc is provided at the connection between the inner edge and the end frame.

[0009] Optionally, the angle of the circular arc is greater than or equal to 90 degrees, and the circular arc is recessed toward the bottom corner piece of the end frame to increase the area of ​​the connection between the inclined support plate and the end frame.

[0010] Optionally, the plurality of oblique support plates are located on the inner side of the end frame close to the transverse center plane of the frame, and the oblique support plates and the inner end surface of the end frame are located in the same plane.

[0011] Optionally, the end frame includes an end lower beam, an end upper beam and two corner columns, and the oblique support plate is connected between the end lower beam, the end upper beam and each of the corner columns;

[0012] The end frame located at the front end of the frame is the front end frame, and a front end connecting plate is provided in the middle position of the end upper beam, end lower beam and corner column of the front end frame. Each of the front end connecting plates is sequentially connected with each of the inclined support plates on the front end frame to form a ring, and each of the front end connecting plates and each of the inclined support plates on the front end frame is located in the same plane as the inner end surface of the front end frame;

[0013] The end frame located at the rear end of the frame is the rear end frame, and a rear end connecting plate is provided in the middle position of the end upper beam and the corner column of the rear end frame. Each of the rear end connecting plates is connected to each of the oblique support plates on the rear end frame in sequence, and each of the rear end connecting plates and each oblique support plate on the rear end frame is located in the same plane as the inner end surface of the rear end frame, and the two oblique support plates connected to the end lower beam of the rear end frame are spaced apart from each other to form a gap.

[0014] Optionally, the distance between the two oblique support plates connected to the end lower beam of the rear end frame is 500-900 mm, and the notch is located just above the bottom discharge notch of the rear end frame.

[0015] Optionally, the two oblique support plates connected to the end lower beam of the rear end beam are both provided with a reinforcement plate at the disconnected end.

[0016] Optionally, the frame also includes a bottom side beam and a top side beam connecting the two end frames, and a bottom diagonal brace is connected between the bottom side beam and the end lower beams of the two end frames, and the two ends of the bottom diagonal brace are respectively connected to the side of the bottom side beam toward the longitudinal center plane of the frame and the side of the end lower beam toward the longitudinal center plane of the frame.

[0017] Optionally, the connection between the bottom diagonal brace and the end lower beam is located at 1 / 5 to 1 / 4 of the length of the end lower beam, and an angle of 20 to 40 degrees is formed between the bottom diagonal brace and the bottom side beam.

[0018] Optionally, the bottom side beam of the frame is an I-beam or a square tube, and the distance between the bottom side beam of the frame and the bottom corner piece of the end frame is 12.5~120mm.

[0019] Optionally, the bottom side beam is an I-beam, and the bottom diagonal brace is connected to one end of the bottom side beam and is located in the middle of the web of the bottom side beam.

[0020] Optionally, avoidance grooves are respectively provided at both ends of the connection between the end lower beam of the end frame and the bottom corner piece of the end frame, and the depth of the avoidance grooves is 60-120 mm.

[0021] Optionally, a reinforcing plate is provided inside the corner column of the end frame, and the reinforcing plate is located on the longitudinal extension surface of the upper surface of the bottom side beam of the frame.

[0022] Optionally, a reinforcing plate is provided at the connection between the connecting ring and the corner column of the end frame, and the reinforcing plate is attached to the outer surface of the connecting ring.

[0023] Optionally, the reinforcement plate is connected to the corner column via a reinforcement block.

[0024] The technical solutions provided by the embodiments of the present invention may have the following beneficial effects:

[0025] The present invention provides an oblique support plate on the end frame as an oblique support. Compared with the traditional technology that uses square tubes as oblique supports, the oblique support plate of this solution, as a plate-like structure, occupies a small space itself, so that more space can be left in the end frame to install other components. In addition, a circular arc is provided at the connection between the oblique support plate and the end frame, which can reduce the stress generated at the connection between the oblique support plate and the end frame, thereby strengthening the connection strength between the oblique support plate and the end frame.

[0026] It should be understood that the foregoing general description and the following detailed description are exemplary only and are not restrictive of the invention. BRIEF DESCRIPTION OF THE DRAWINGS

[0027] The accompanying drawings, which are incorporated in and constitute a part of this specification, illustrate embodiments consistent with the invention and, together with the description, serve to explain the principles of the invention.

[0028] Figure 1 It is a schematic structural diagram of the tank container of the present invention.

[0029] Figure 2 It is a structural schematic diagram of the front end frame of the tank container of the present invention.

[0030] Figure 3 It is a schematic structural diagram of the rear end frame of the tank container of the present invention.

[0031] Figure 4 It is a side view schematic diagram of the front side of the tank container of the present invention.

[0032] Figure 5 It is a structural schematic diagram of the frame of the tank container of the present invention.

[0033] Figure 6 It is a side view of the rear side of the tank container of the present invention.

[0034] Figure 7 It is a schematic structural diagram of the frame of the tank container of the present invention at another angle.

[0035] Figure 8 It is a side view schematic diagram of the frame of the present invention in the longitudinal direction. DETAILED DESCRIPTION

[0036] In order to further illustrate the principle and structure of the present invention, preferred embodiments of the present invention will now be described in detail with reference to the accompanying drawings.

[0037] like Figure 1 , which is a schematic structural diagram of the tank container of the present invention. The tank container 100 comprises a frame 1 and a tank body 2. The frame 1 surrounds the tank body 2 to support the tank body 2 and facilitate its lifting and stacking. The tank body 2 is connected to the frame 1 at both ends via connecting rings 3. In one embodiment, the tank container 100 can be a standard 20-foot tank container. It is understood that the tank container 100 can also be a standard tank container of other volumes. The maximum load capacity of the tank container 100 is 39 tons.

[0038] The frame 1 includes two end frames 11, 12 and a top side beam 13 and a bottom side beam 14 connected between the two end frames 11, 12. It is understood that in other embodiments, the frame may also include only two end frames without the top side beam and the bottom side beam.

[0039] Combine Figure 2 and Figure 3 As shown, Figure 2 This is a schematic structural diagram of the front end frame of the tank container of the present invention. Figure 3 This is a schematic structural diagram of the rear end frame of the tank container of the present invention. The two end frames 11 and 12 of the frame 1 correspond to the front and rear end frames located at the front and rear ends of the frame 1, respectively. The end frame 11 includes an upper end beam 111, a lower end beam 113, and two parallel corner posts 112. The upper end beam 111, the lower end beam 113, and the two corner posts 112 are enclosed by top corner fittings 115 and bottom corner fittings 114 to form a square frame structure. A plurality of inclined support plates 15 are provided on the end frame 11, and are used to connect to the connecting ring 3 at the front end of the tank body 2. These inclined support plates 15 are located within the frame area of ​​the end frame 11, that is, they do not extend beyond the range of the respective frames of the end frame 11. The inclined support plates 15 are connected between the lower end beam 113, the upper end beam 111, and each corner post.

[0040] The inclined support plate 15 is a plate-like structure that can be bent toward the top corner fitting 115 or the bottom corner fitting 114 of the end frame 11. The inclined support plate 15 has an outer edge 151 facing a corner of the end frame 11 and an inner edge 152 facing the center of the end frame 11 (the intersection of the diagonals of the end frame 11). A circular arc 153 is formed at the junction of the outer edge 151 and the end frame 11. The angle of the arc 153 is greater than or equal to 90 degrees to reduce local stress at the junction. The arc 153 is recessed toward the bottom corner fitting 114 of the end frame 11, meaning that the center of the arc 153 is located on the side of the outer edge 151 facing the top corner fitting 115. This maximizes the area of ​​the connection between the inclined support plate 15 and the end frame 11, increasing connection strength and reducing stress. The inner edge 152 can form a right angle with the end frame 11. It is understood that in other embodiments, the connection between the inner edge 152 and the end frame 11 can also be set to an arc (such as Figure 6 shown).

[0041] Because the diagonal support plate is a plate-like structure, it occupies less space than conventional square tubes used as diagonal supports. This allows for more room within the end frame for installing other components, simplifies the end frame structure, and reduces the complexity of the welding process compared to square tubes. Furthermore, the arc at the connection between the diagonal support plate and the end frame reduces stress at the joint and strengthens the connection between the two.

[0042] Combine Figure 4 Figure 1 shows a schematic side view of the front side of a tank container according to the present invention. The shape of the outer edge 151 is determined based on the tank container's insulation profile, and its minimum distance S1 from the connecting ring 3 is no less than 20 mm. This ensures that the connecting ring 3 is connected to the sufficiently large inclined support plate 15, ensuring a secure and reliable connection between the connecting ring 3 and the inclined support plate 15. Correspondingly, the minimum distance S2 from the inner edge 152 to the connecting ring 3 is no less than 20 mm.

[0043] Further, combined Figure 5Figure 1 shows a schematic structural diagram of the tank container frame according to the present invention. Multiple inclined support plates 15 of the end frame 11 are located on the inner side of the end frame 11, near the transverse center plane P of the frame 1. This allows ample space within the end frame 11 (i.e., the space defined by the widths of the two corner posts, the upper end beam, and the lower end beam) for installing accessories, such as ladders and valves. Specifically, the multiple inclined support plates 15 are coplanar with the inner end surface of the end frame 11. The inner end surface of the end frame 11 is the plane of the inner end surfaces of the two corner posts 112, the upper end beam 111, and the lower end beam 112 facing the transverse center plane P of the frame 1. The inclined support plates 15 are located on the side of the end frame 11 near the transverse center plane P and coplanar with the inner end surface of the end frame 11. This not only leaves more space for installing accessories, but also ensures that each inclined support plate 15 connects to the connecting ring 3 in the same plane, ensuring a secure and reliable connection.

[0044] Further, combined Figure 2 As shown, a front connecting plate 16 is provided in the middle position of the end upper beam 111, the end lower beam 113 and the corner column 112 of the end frame 11, and each front connecting plate 16 is connected to each inclined support plate 15 in sequence to form a ring. When the outer diameter of the tank body 2 is small, the connecting ring 3 is connected to the inclined support plate 15 and the front connecting plate 16. In another embodiment, when the outer diameter of the tank body 2 is large, the connecting ring 3 is connected to the inclined support plate 15 and the corner column 113. In this case, the front connecting plate is not necessary. The front connecting plate 16 extends from the plane where the inner end surface of the end frame 11 is located to the inside of the frame of the end frame 11, and is located in the same plane as the inner end surface of the end frame 11. In this way, each front connecting plate 16 and each inclined support plate 15 are located in the same plane.

[0045] The structure of the rear end frame is similar to that of the front end frame (i.e., the end frame 11). Specifically, Figure 3 As shown, the end frame 12 (i.e., the rear end frame) comprises an upper end beam 121, a lower end beam 123, and two parallel corner posts 122. Together, the upper end beam 111, lower end beam 113, and two corner posts 112 form a square structure. Multiple inclined support plates 15 are provided on the end frame 12, which are used to connect to the connecting ring 3 at the rear end of the tank body 2. These inclined support plates 15 are located within the frame area of ​​the end frame 12, and are connected between the lower end beam 123, the upper end beam 121, and each corner post 122.

[0046] The structure of the inclined support plate 15 on the end frame 12 is similar to that of the inclined support plate 15 on the end frame 11. For example, an arc 153 is provided at the connection between the outer edge 151 of the inclined support plate 15 and the end frame 12. The angle of the arc 153 is greater than or equal to 90 degrees, and the connection between the inner edge 152 and the end frame 12 can be a right angle.

[0047] Moreover, the distance between the inner edge and the outer edge of the inclined support plate 15 on the end frame 12 and the connecting ring 3 is similar to that of the inclined support plate 15 on the end frame 11. Specifically, Figure 6 As shown in the figure, which is a side view of the rear side of the tank container according to the present invention, the shape of the outer edge 151 of the inclined support plate 15 of the end frame 12 is set according to the insulation profile of the tank container. The minimum distance S3 between the outer edge 151 and the connecting ring 3 is no less than 20 mm. This ensures that the connecting ring 3 is connected to the inclined support plate with a sufficiently large area, ensuring the firmness and reliability of the connection between the connecting ring 3 and the inclined support plate 15. Correspondingly, the minimum distance S4 between the inner edge 152 and the connecting ring 3 is no less than 20 mm.

[0048] The structure of the oblique support plate 15 on the end frame 12 is different from that of the oblique support plate 15 on the end frame 11 mainly in that Figure 3 As shown, the two inclined support plates 15 connected to the lower end beam 123 of the end frame 12 are spaced apart to form a gap 124. This gap 124 is located directly above the bottom discharge notch 125 of the end frame 12. The distance L1 between the two inclined support plates 15 is 500-900 mm. The two inclined support plates 15 are separated from each other, increasing the installation space for the rear end frame valve box, making it suitable for installing larger and wider valve boxes. The space between the two separated support plates is also large enough to facilitate manual operation.

[0049] The two oblique support plates 15 connected to the lower end beam 123 are both provided with a reinforcing plate 126 at the disconnected end. The bottom end of the reinforcing plate 126 is connected to the lower end beam 123 to strengthen the strength of the oblique support plates 15 at the disconnected portion.

[0050] Furthermore, a rear connecting plate 17 is provided midway between the end upper beam 121 and the corner post 112 of the end frame 12. Each rear connecting plate 17 is sequentially connected to each diagonal support plate 15. When the outer diameter of the tank body 2 is relatively small, the connecting ring 3 connecting the tank body 2 is connected to the diagonal support plates 15 and the rear connecting plate 17. In another embodiment, when the outer diameter of the tank body 2 is relatively large, the connecting ring 3 connecting the tank body 2 is connected to the diagonal support plates 15 and the corner post 123. Therefore, in this case, the rear connecting plate is not required.

[0051] Further, combined Figure 7 As shown, Figure 7This is a schematic structural diagram of the tank container frame of the present invention from another angle. The multiple inclined support plates 15 of the end frame 12 are located on the inner side of the end frame 12 near the transverse center plane P of the frame 1. This allows ample space within the interior of the end frame 12 (i.e., the space defined by the widths of the two corner posts, the upper end beam, and the lower end beam) for installing accessories, such as ladders and valves. Specifically, the multiple inclined support plates 15 extend from the plane of the inner end surface of the end frame 12 toward the center of the end frame 12 and lie in the same plane as the inner end surface of the end frame 12. The inner end surface of the end frame 12 is the plane of the inner end surfaces of the two corner posts 122, the upper end beam 121, and the lower end beam 112 facing the transverse center plane P of the frame 1. The inclined support plates 15 are located on the side of the end frame 12 near the transverse center plane P of the frame 1 and lie in the same plane as the inner end surface of the end frame 12. This not only leaves as much space as possible for installing accessories, but also ensures that each inclined support plate 15 connects to the connecting ring 3 in the same plane, ensuring a secure and reliable connection.

[0052] Furthermore, the rear connecting plate 17 extends from the plane of the inner end surface of the end frame 12 toward the center of the end frame 12 (the center of the inner end surface of the end frame 12). In other words, the rear connecting plate 17 and the inner end surface of the end frame 12 are coplanar. Thus, each rear connecting plate 17 and each oblique support plate 15 are coplanar. This ensures that each rear connecting plate 17 and each oblique support plate 15 are coplanarly connected to the connecting ring 3, ensuring a secure and reliable connection.

[0053] Continue to refer Figure 7A bottom diagonal brace 18 is connected between the end lower beam 123 of the end frame 12 and the two bottom side beams 14 of the frame 1. The two ends of the bottom diagonal brace 18 are respectively connected to the side portion 141 of the bottom side beam 14 facing the longitudinal center plane of the frame 1 (that is, the center plane along the length direction of the frame 1) and the side portion 1231 of the end lower beam 123 facing the longitudinal center plane of the frame 1. In one embodiment, the bottom side beam 14 is a square tube, and the bottom diagonal brace 18 is directly connected to one end of the bottom side beam 14 on the rectangular side of the square tube facing the longitudinal center plane of the frame 1. In one embodiment, the bottom side beam 14 is an I-beam, and the bottom diagonal brace 18 is connected to one end of the bottom side beam 14 at the middle position of the web of the I-beam, so as to control the torsion of the I-beam through the connection between the bottom diagonal brace 18 and the bottom side beam 14, thereby facilitating the transfer of load. The bottom side beam 14 is located above the bottom corner fitting 127, and the distance between the bottom side beam 14 and the bottom corner fitting 127 is 12.5 to 120 mm, which facilitates the load-bearing of the bottom side beam 14 and the bottom corner fitting 127. The connection between the bottom diagonal brace 18 and the end lower beam 123 is located at a point 1 / 5 to 1 / 4 of the length of the end lower beam 123 extending from the outer surface of the bottom corner fitting 127 of the end frame 12 to the center of the end lower beam 123. The bottom diagonal brace 18 forms an angle a with the bottom side beam 14, which is 20 to 40 degrees. Connecting the end lower beam 123 and the bottom side beam 14 through the bottom diagonal brace 18 reduces vibration and lateral swing of the bottom side beam 14, helping to reduce fatigue cracks that may occur at the interface between the bottom side beam 18 and the corner column 122. Furthermore, the connection between the end frame 12 and the bottom side beam 14 through the bottom diagonal brace 14 facilitates the load-bearing and force transmission of the entire frame 1.

[0054] Similarly, a bottom diagonal brace 18 is also connected between the lower end beam 113 of the end frame 11 and the two bottom side beams 14 of the frame 1. The location of the bottom diagonal brace 18 between the lower end beam 113 and the two bottom side beams 14 is the same as the location of the lower end beam 123 of the end frame 12 and the two bottom side beams 14, and will not be repeated here.

[0055] like Figure 2 As shown, escape slots 116 are provided at each end of the connection between the end lower beam 113 of the end frame 11 and the bottom corner fitting 114 of the end frame 11. This prevents the end lower beam 113 from colliding with the twist lock and being damaged during stacking or lifting. The depth of the escape slots 116 is 60-120 mm. Preferably, reinforcement blocks 117 are welded above the escape slots 116 to strengthen the end lower beam 113 at the slotted portion.

[0056] Similarly, if Figure 3 As shown, both ends of the end lower beam 123 of the end frame 12 are also provided with avoidance grooves 128 , and a reinforcement block 129 is also provided above the avoidance grooves 128 of the end lower beam 123 .

[0057] Further, in one embodiment, Figure 8The figure shows a side view of the frame of the present invention in the longitudinal direction. It should be noted that the longitudinal direction herein refers to the length of the frame, and the transverse direction (or horizontal direction) herein refers to the width of the frame. Reinforcement plates 101 are installed inside the corner posts 112 and 122 of the front and rear end frames. These reinforcement plates are located on an extension of the upper surface 142 of the bottom side beam 14. In other words, reinforcement plates 101 are located exactly at the junction of the bottom side beam 14 and the corner posts 112 (or 122), thereby strengthening the connection between the bottom side beam 14 and the corner posts 112 (or 122).

[0058] Furthermore, to strengthen the connection strength between the bottom side beam 14 and the corner column 112 (or corner column 122 ), a side support 102 may be provided between the corner column 112 (or corner column 122 ) and the bottom side beam 14 . The side support 102 may be a square tube, a triangular box, or a triangular rib.

[0059] Please refer to Figure 1 The connection ring 3 is connected to the head of the tank body 2 by overlapping or butting. The connection ring 3 is welded to the corner post 112 (or corner post 122). A reinforcement plate 22 is provided at the connection area between the connection ring 3 and the corner post 112 (or corner post 122). This reinforcement plate 22 is attached to the outer surface of the connection ring 3. This reinforcement plate 22 is connected to the corner post 112 (or corner post 122) via a reinforcement block 23 to strengthen the connection strength between the connection ring 3 and the frame 1. The reinforcement block 23 can be a triangular box or triangular rib.

[0060] The above are only preferred embodiments of the present invention and do not limit the scope of protection of the present invention. Any equivalent structural changes made using the contents of the present invention description and drawings are included in the scope of protection of the present invention.

Claims

1. A tank container, characterized in that: include: a tank body, with connecting rings connected at both ends; A frame, which surrounds the tank body, the frame including two end frames, each of which is provided with a plurality of inclined support plates for connecting to the connecting ring, the inclined support plates being a plate-shaped structure, and each of which is provided with an arc at the connection between the inclined support plates and the end frames; the plurality of inclined support plates are located on the inner side of the end frames close to the transverse center plane of the frame, and the inclined support plates and the inner end surfaces of the end frames are located in the same plane; The end frame includes an end lower beam, an end upper beam and two corner columns, and the oblique support plate is connected between the end lower beam, the end upper beam and each of the corner columns; The end frame located at the front end of the frame is the front end frame, and a front end connecting plate is provided in the middle position of the end upper beam, the end lower beam and the corner column of the front end frame. Each of the front end connecting plates and the inclined support plates on the front end frame are connected in sequence to form a ring, and each of the front end connecting plates and the inclined support plates on the front end frame are located in the same plane as the inner end surface of the front end frame; the connecting ring can simultaneously connect the front end frame, the front end connecting plate and the inclined support plate, and the formed connection surface is a ring; The end frame located at the rear end of the frame is the rear end frame, and a rear end connecting plate is provided at the middle position of the end upper beam and the corner column of the rear end frame. Each of the rear end connecting plates is connected to each of the oblique support plates on the rear end frame in sequence, and each of the rear end connecting plates and each oblique support plate on the rear end frame is located in the same plane as the inner end surface of the rear end frame.

2. The tank container according to claim 1, characterized in that: The inclined support plate has an outer edge facing a corner of the end frame and an inner edge facing the center of the end frame. The arc is provided at the connection between the outer edge and the end frame. The minimum distance between the outer edge and the inner edge and the connecting ring is not less than 20 mm.

3. The tank container according to claim 2, characterized in that: A circular arc is provided at the connection between the inner edge and the end frame.

4. The tank container according to claim 1, characterized in that: The angle of the circular arc is greater than or equal to 90 degrees, and the circular arc is recessed toward the bottom corner piece of the end frame, so as to increase the area of ​​the connection between the oblique support plate and the end frame.

5. The tank container according to claim 1, 2, 3 or 4, characterized in that: The two oblique support plates connected to the end lower beam of the rear end frame are spaced apart from each other to form a gap.

6. The tank container according to claim 5, characterized in that: The distance between the two oblique support plates connected to the end lower beam of the rear end frame is 500-900 mm, and the notch is just located above the bottom discharge notch of the rear end frame.

7. The tank container according to claim 6, characterized in that: The two oblique support plates connected to the end lower beams of the rear end frame are both provided with reinforcement plates at the disconnected ends.

8. The tank container according to claim 1, characterized in that: The frame also includes a bottom side beam and a top side beam connecting the two end frames, and a bottom diagonal brace is connected between the bottom side beam and the end lower beams of the two end frames, and the two ends of the bottom diagonal brace are respectively connected to the side of the bottom side beam facing the longitudinal center plane of the frame and the side of the end lower beam facing the longitudinal center plane of the frame.

9. The tank container according to claim 8, characterized in that: The connection point between the bottom diagonal brace and the end lower beam is located at 1 / 5 to 1 / 4 of the length of the end lower beam, and an angle of 20 to 40 degrees is formed between the bottom diagonal brace and the bottom side beam.

10. The tank container according to claim 9, characterized in that: The bottom side beam of the frame is an I-beam or a square tube, and the distance between the bottom side beam of the frame and the bottom corner piece of the end frame is 12.5~120mm.

11. The tank container according to claim 10, characterized in that: The bottom side beam is an I-beam, and the bottom diagonal brace is connected to one end of the bottom side beam and is located in the middle of the web of the bottom side beam.

12. The tank container according to claim 1, characterized in that: Both ends of the end lower beam of the end frame connected to the bottom corner piece of the end frame are respectively provided with avoidance grooves, and the depth of the avoidance grooves is 60~120mm.

13. The tank container according to claim 1, characterized in that: A reinforcing plate is provided inside the corner column of the end frame, and the reinforcing plate is located on the longitudinal extension surface of the upper surface of the bottom side beam of the frame.

14. The tank container according to claim 1, characterized in that: A reinforcing plate is provided at the connection between the connecting ring and the corner column of the end frame, and the reinforcing plate is attached to the outer surface of the connecting ring.

15. The tank container according to claim 14, characterized in that: The reinforcement plate is connected to the corner column via a reinforcement block.

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