Container framework structure

Abstract

The invention discloses a container skeleton structure, which belongs to the technical field of containers, and comprises twelve rectangular pipes and eight corner connecting pieces, and the twelve rectangular pipes enclose a rectangular frame structure; the eight corner connecting pieces are located at the eight vertexes of the frame structure correspondingly and used for fixedly connecting the three adjacent rectangular pipes. The designed corner connecting piece can be fixed from the interiors of the rectangular pipes, the three lock catch units can be inserted into the three adjacent rectangular pipes correspondingly, the inner protruding blocks at the ends of the rectangular pipes abut against the side wall of the base through the lock catch units, connection between the rectangular pipes and the base is achieved, and the plug pin piece serves as a supporting structure and can be inserted into the rectangular pipes; supporting is provided from the interiors of the rectangular pipes, it is guaranteed that the joints of the rectangular pipes and the base have enough supporting force, through the prefabricated corner connecting pieces and the rectangular pipes, rapid connection of the container framework can be conducted, and transportation of container accessories and assembly of a container are facilitated.

Description

Technical Field

[0001] The present invention relates to the technical field of containers, and particularly to a container frame structure. Background Art

[0002] Existing containers include four corner posts, upper and lower side beams, a plurality of bottom cross beams and a door lintel. A corrugated side wall plate is welded between the upper and lower side beams. During the processing, structures such as corner posts, side beams and bottom cross beams are all connected by welding. Although the strength and waterproofness of the welded containers can meet the requirements, the processing and manufacturing are cumbersome and the processing technology requirements are relatively high. At present, some large logistics vehicles adopt the structure of a skeleton vehicle plus a container body. Since the top of the container body is less stressed, assembled containers have also begun to be applied.

[0003] There are still some problems with existing assembled containers: the skeleton is usually connected by a large number of bolts, resulting in slow assembly. And the bolts usually penetrate the skeleton structure members horizontally, which also causes difficulties for the subsequent waterproof work of the whole container. Summary of the Invention

[0004] Aiming at the above-mentioned technical deficiencies, the purpose of the present invention is to provide a container frame structure. By designing corner connectors, the assembly efficiency is improved, and the rectangular tube is connected to the corner connector from the inside of the rectangular tube to avoid perforating the outer wall of the rectangular tube.

[0005] To solve the above technical problems, the present invention adopts the following technical solutions: The present invention provides a container frame structure, including: Twelve rectangular tubes, and the twelve rectangular tubes enclose a cuboid frame structure; Eight corner connectors, and the eight corner connectors are respectively located at the eight vertices of the frame structure for fixedly connecting three adjacent rectangular tubes; Wherein, the corner connector includes a base, three locking units and three plug pins respectively fixed on three side faces of the base. An inner convex block is arranged at the end of the rectangular tube, the plug pin is inserted into the end of the rectangular tube, and the locking unit presses the inner convex block against the side wall of the base from inside the rectangular tube.

[0006] Preferably, four inner convex blocks are fixed at the end of the rectangular tube, and the four inner convex blocks are respectively located in the middle of the four inner walls of the rectangular tube. A limiting hole penetrating along the length direction of the rectangular tube is opened on the inner convex block.

[0007] Preferably, the plug pin includes four support columns, and the four support columns respectively correspond to the four inner wall edges of the rectangular tube. The support columns are offset from the inner convex block. When the plug pin is inserted into the end of the rectangular tube, the inner convex block is located between two adjacent support columns.

[0008] Preferably, the locking unit includes: A locking rod, and a through hole for the locking rod to pass through is formed on the base. A sliding seat, a threaded hole matching with the locking rod is formed on the sliding seat, and four pushing blocks corresponding to the four support columns are fixed on the sliding seat. Wherein, two abutting mechanisms are arranged on the pushing block. When the sliding seat moves towards the plug-in member, the abutting mechanisms abut against the inner convex block.

[0009] Preferably, the abutting mechanism includes an abutting block. A first guiding inclined surface is formed at one end of the abutting block close to the support column. A support block is fixed on the side surface of the other end of the abutting block. A second guiding inclined surface is formed at one end of the support block away from the abutting block. The support block is slidably mounted on the pushing block. A third guiding inclined surface matching with the first guiding inclined surface is formed at one end of the support column close to the pushing block. A fourth guiding inclined surface matching with the second guiding inclined surface is formed on the pushing block. When the sliding seat moves towards the plug-in member, and the third guiding inclined surface and the fourth guiding inclined surface respectively abut against the first guiding inclined surface and the second guiding inclined surface, the abutting block and the support block move towards the adjacent pushing block, so that the abutting block faces the inner convex block.

[0010] Preferably, a sliding groove parallel to the fourth guiding inclined surface is formed on the pushing block. A sliding block slidably mounted in the sliding groove is fixed on the support block. A pushing wall matching with the end of the support block is formed on the pushing block. When the second guiding inclined surface slides to the end of the fourth guiding inclined surface, the end of the support block abuts against the pushing wall.

[0011] Preferably, the abutting blocks in the two corresponding abutting mechanisms on two adjacent pushing blocks cooperate to abut against the inner convex block and form the support for the two adjacent support columns.

[0012] Preferably, a limiting pin is fixed on the abutting block. A receiving groove for receiving the limiting pin is formed on the support column. A blind hole matching with the limiting pin is formed on the base. When the abutting block abuts against the inner convex block, the limiting pin passes through the limiting hole and is inserted into the blind hole.

[0013] Preferably, a hexagonal head is fixed at one end of the locking rod located inside the base. A sealing ring is sleeved on the locking rod between the hexagonal head and the side wall of the base.

[0014] Preferably, a sealing gasket is arranged between the base and the rectangular pipe.

[0015] The beneficial effects of the present invention are as follows: The container skeleton structure designed by the present invention adopts rectangular tubes as main supporting members, and realizes the connection between rectangular tubes through corner connectors to construct a rectangular container skeleton. The corner connectors designed by the present invention can be fixed from the inside of the rectangular tubes, and three locking units can be respectively inserted into three adjacent rectangular tubes. The inner protrusions at the ends of the rectangular tubes are pressed against the side walls of the base through the locking units to realize the connection between the rectangular tubes and the base. The latch member can be inserted into the rectangular tube as a supporting structure to provide support from the inside of the rectangular tube to ensure that the connection between the rectangular tube and the base has sufficient supporting force. The tube can be used for quick connection of the container frame, which is convenient for the transportation of container accessories and the assembly of the container. There is no need to perforate the outer wall of the rectangular tube, so the outer wall of the rectangular tube can be kept simple. The locking unit designed by the present invention includes a locking rod and a sliding seat. The sliding seat can be inserted into the rectangular tube. By rotating the locking rod, the sliding seat can be moved in the rectangular tube toward the inner convex block, and the designed clamping mechanism can be used to displace the clamping block. The clamping block can not only move between the support columns to form a support for the support columns and further enhance the strength of the support columns, but also can resist the inner convex block to prevent the rectangular tube from detaching from the support column, thereby ensuring the stability of the connection. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings required for use in the embodiments or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative work.

[0017] Figure 1 A three-dimensional diagram of the overall structure of a container skeleton structure provided by an embodiment of the present invention.

[0018] Figure 2 It is a schematic diagram of the connection between the corner connector of the present invention and three rectangular tubes.

[0019] Figure 3 It is a schematic diagram of the misalignment distribution of the push block and the inner protrusion block of the present invention.

[0020] Figure 4 It is a schematic diagram of the cooperation between the locking unit of the present invention and the support column in the initial state.

[0021] Figure 5 It is a top view of the corner connector of the present invention and the rectangular tube in a fixed state.

[0022] Figure 6 for Figure 5 Cross-sectional view at AA in the middle.

[0023] Figure 7 for Figure 6Partial enlarged view of part A

[0024] Figure 8 Schematic diagram of the cooperation between the latch unit of the present invention and the support column in the working state

[0025] Figure 9 Schematic diagram of the structure of the end of the rectangular tube of the present invention

[0026] Figure 10 Schematic diagram of the structure of the sliding seat of the present invention

[0027] Figure 11 Schematic diagram of the structure of the base and the plug-in member of the present invention

[0028] Explanation of reference numerals 1. Rectangular tube, 11. Inner convex block, 111. Limit hole, 2. Angle connecting piece, 21. Base, 211. Through hole, 212. Blind hole, 213. Sealing gasket, 22. Latch unit, 221. Locking rod, 2211. Hexagonal head, 2212. Sealing ring, 222. Sliding seat, 2221. Threaded hole, 2222. Pushing block, 22221. Protruding part, 223. Tightening block, 2231. First guiding inclined surface, 224. Supporting block, 2241. Second guiding inclined surface, 225. Fourth guiding inclined surface, 226. Chute, 227. Pushing wall, 228. Limit pin, 23. Plug-in member, 231. Support column, 2311. Third guiding inclined surface, 2312. Receiving groove, 2313. Inner groove, 3. Connecting plate, 4. Bracket, 5. Ground beam Detailed implementation manners

[0029] Next, the technical solutions in the embodiments of the present invention will be clearly and completely described in conjunction with the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only a part of the embodiments of the present invention, rather than all the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those of ordinary skill in the art without creative efforts shall fall within the protection scope of the present invention

[0030] Embodiment 1 As Figures 1 to 11 shown, Embodiment 1 of the present invention provides a container frame structure, including twelve rectangular tubes 1 and eight angle connecting pieces 2. The twelve rectangular tubes 1 enclose a cuboid frame structure, and the eight angle connecting pieces 2 are respectively located at the eight vertices of the frame structure. Each angle connecting piece 2 is responsible for fixedly connecting three adjacent rectangular tubes 1, and finally assembling into a container frame. As Figure 1As shown in the figure, a connecting plate 3 is also welded on the rectangular pipe 1 for connecting the side wall panel and the top panel of the container. Brackets 4 for installing the container sill 5 are welded on the two rectangular pipes 1 located below. The sill 5 is used to support the wooden floor of the container. The rectangular pipe 1 and the corner connector 2 designed in the present invention are prefabricated parts. When it is necessary to transport the container skeleton in batches, the rectangular pipe 1 and the corner connector 2 can be transported, and then assembled into a container skeleton with a frame structure when arriving at the destination, thus greatly reducing the space occupied during transportation and reducing the transportation cost.

[0031] As Figure 9 shown in the figure, four inner convex blocks 11 are welded at the end of the rectangular pipe 1 designed in the present invention. The inner convex blocks 11 are located inside the rectangular pipe 1. The four inner convex blocks 11 are respectively located in the middle of the four inner walls of the rectangular pipe 1, and installation spaces are left for the corner connectors 2 at the corners of the four inner walls of the rectangular pipe 1. A limiting hole 111 is also opened on the inner convex block 11, and the limiting hole 111 penetrates through the inner convex block 11 along the length direction of the rectangular pipe 1.

[0032] The corner connector 2 designed in the present invention includes a cuboid-shaped base 21, three locking units 22, and three plug-in members 23 respectively fixed on three adjacent sides of the base 21. Three relief grooves are opened on the three sides of the base 21 facing away from the plug-in members 23, which is convenient for adjusting the locking units 22.

[0033] As Figure 11 shown in the figure, each plug-in member 23 includes four support columns 231, and these four support columns 231 respectively correspond to the edges of the four inner walls of the rectangular pipe 1, so that the support columns 231 and the inner convex blocks 11 are arranged in a staggered manner. When the plug-in member 23 is inserted into the end of the rectangular pipe 1, the support columns 231 do not interfere with the inner convex blocks 11. At the same time, each inner convex block 11 is located between two adjacent support columns 231. And the three locking units 22 can also be staggered from the inner convex blocks 11 in the initial state, so the locking units 22 can be inserted into the rectangular pipe 1.

[0034] As Figure 4 and Figure 10 shown in the figure, the locking unit 22 designed in the present invention includes a locking rod 221 and a sliding seat 222. A through threaded hole 2221 is opened on the sliding seat 222, and threads matching the threaded hole 2221 are opened on the locking rod 221. A hexagonal head 2211 is fixed at one end of the locking rod 221, and a through hole 211 matching the locking rod 221 is opened on the base 21. The locking rod 221 can pass through the through hole 211, and the sliding seat 222 is sleeved on the locking rod 221. In the initial state, the sliding seat 222 is located on the side of the support column 231 away from the base 21, and the hexagonal head 2211 is located on the side of the base 21 away from the support column 231. When the hexagonal head 2211 is rotated, the locking rod 221 rotates and drives the sliding seat 222 to move in the rectangular pipe 1 towards the base 21.

[0035] Four push blocks 2222 corresponding to the four support columns 231 are fixed on the slide 222, and the push blocks 2222 are also staggered with the inner protrusions 11. Figure 3 As shown, the four push blocks 2222 and the slide seat 222 are offset from the inner protrusion 11 to facilitate insertion into the rectangular tube 1. Figure 10 As shown, each push block 2222 is provided with two abutting mechanisms, which are respectively located on the two sides of the push block 2222. The inner wall of one side of the rectangular tube 1 corresponds to two abutting mechanisms respectively located on the two push blocks 2222. When the slide 222 moves toward the base 21, the abutting mechanisms cooperate with the support column 231, gradually stagger the support column 231 and abut against the inner convex block 11, thereby fixing the rectangular tube 1 and the base 21.

[0036] like Figure 10 and Figure 11 As shown, the pressing mechanism specifically includes a pressing block 223, a support block 224 and a mounting groove provided on the push block 2222, wherein two slide grooves 226 are provided on the bottom of the mounting groove, and two sliders slidably installed in the slide grooves 226 are fixed at the bottom of the support block 224, so that the support block 224 is slidably installed in the mounting groove. The pressing block 223 is fixed to one side of the support block 224, and the pressing block 223 extends out of the range of the mounting groove. A first guiding slope 2231 is provided at one end of the pressing block 223 close to the support column 231, a second guiding slope 2241 is provided at one end of the support block 224 away from the pressing block 223, a fourth guiding slope 225 cooperating with the second guiding slope 2241 is provided on the groove wall of the mounting groove, and a third guiding slope 2311 cooperating with the first guiding slope 2231 is provided at one end of the support column 231 away from the base 21. The fourth guiding slope 225 is parallel to the slide groove 226. A push wall 227 connected to the fourth guide inclined surface 225 is further provided on the groove wall of the installation groove, and the push wall 227 is used to cooperate with the end of the support block 224.

[0037] like Figure 4 , Figure 8 , Figure 10 and Figure 11As shown, in the initial state, the first guiding inclined surface 2231 of the pressing block 223 abuts against the third guiding inclined surface 2311 of the supporting column 231, and the second guiding inclined surface 2241 of the supporting block 224 abuts against the fourth guiding inclined surface 225 on the pushing block 2222. When the sliding seat 222 gradually moves towards the base 21, the third guiding inclined surface 2311 and the fourth guiding inclined surface 225 respectively push the first guiding inclined surface 2231 and the second guiding inclined surface 2241, causing the supporting block 224 to move along the sliding groove 226. This makes the pressing block 223 gradually stagger from the supporting column 231 and move towards the adjacent pushing block 2222 until the second guiding inclined surface 2241 slides to the end of the fourth guiding inclined surface 225. At this time, the end of the supporting block 224 abuts against the pushing wall 227, while the pressing block 223 completely staggers from the supporting column 231, and one side wall of the pressing block 223 fits against one side wall of the supporting column 231. Two adjacent pressing blocks 223 on two adjacent pushing blocks 2222 will abut against each other and face the inner convex block 11. When the sliding seat 222 moves further, these two pressing blocks 223 finally abut against the inner convex block 11, and these two pressing blocks 223 form a support for two adjacent supporting columns 231, enabling the four supporting columns 231 and the eight pressing blocks 223 to enclose a rectangular frame structure, further enhancing the structural strength of the plug-in member 23. At the same time, the pressing block 223 can push the supporting column 231 towards the inner wall of the rectangular tube 1, making the supporting column 231 in interference fit with the inner wall of the rectangular tube 1, further enhancing the connection strength.

[0038] During use, as Figure 4 shown, the locking unit 22 can be first installed on the base 21 to make the sliding seat 222 away from the supporting column 231, then the rectangular tube 1 is sleeved on the sliding seat 222 and the supporting column 231. After that, the hexagonal head 2211 is rotated to make the base 21 move towards the supporting column 231 direction inside the rectangular tube 1. Finally, the pressing block 223 abuts against the inner convex block 11 and the side wall of the supporting column 231, realizing the stable connection between the base 21 and the rectangular tube 1 and completing the assembly of the container skeleton.

[0039] Embodiment Two: Based on Embodiment One, the present invention proposes Embodiment Two to further enhance the connection stability. As Figure 10 shown, a limit pin 228 is fixed on the pressing block 223. As Figure 11 shown, a receiving groove 2312 for receiving the limit pin 228 is provided on the side surface of the supporting column 231. As Figure 7 shown, a blind hole 212 cooperating with the limit pin 228 is provided on the base 21. When the pressing block 223 abuts against the inner convex block 11, two adjacent limit pins 228 respectively located on two pushing blocks 2222 jointly pass through the limit hole 111 on the inner convex block 11 and are inserted into the same blind hole 212. Figure 7When observed with reference to [the above], the clamping block 223 and the base 21 cooperate to form a lateral limit for the inner convex block 11, while the limit pin 228 forms a longitudinal limit for the inner convex block 11, further enhancing the connection strength between the rectangular tube 1 and the angle connecting seat. At the same time, a protruding portion 22221 is provided at one end of the pushing block 2222 close to the support column 231, and an inner groove 2313 is formed on the support column 231. When the clamping block 223 abuts against the inner convex block 11, the protruding portion 22221 can be inserted into the inner groove 2313 to enhance the connection between the pushing block 2222 and the support column 231.

[0040] Embodiment 3: Based on Embodiment 1 and Embodiment 2, the present invention further improves the container skeleton. As Figure 7 shown, a sealing ring 2212 is sleeved on the locking rod 221 between the hexagonal head 2211 and the side wall of the base 21. The sealing ring 2212 can prevent external water vapor from entering the rectangular tube 1 through the through hole 211 of the base 21. A sealing gasket 213 is further provided between the base 21 and the rectangular tube 1. The sealing gasket 213 sleeves the four support columns 231 to prevent external water vapor from entering the rectangular tube 1 at the connection between the rectangular tube 1 and the base 21. Through the above settings, it can effectively prevent rainwater and moisture from entering the interior of the rectangular tube 1, protect components such as the locking rod 221 and the support column 231, prevent internal rust, and extend the service life of the container skeleton.

[0041] Obviously, those skilled in the art can make various changes and modifications to the present invention without departing from the spirit and scope of the present invention. Thus, if these modifications and variations of the present invention fall within the scope of the claims of the present invention and their equivalent technologies, the present invention is also intended to include these modifications and variations.

Claims

1. A container frame structure, characterized in that, Including: Twelve rectangular tubes, and the twelve rectangular tubes enclose a cuboid frame structure; Eight corner connectors, and the eight corner connectors are respectively located at the eight vertices of the frame structure for fixedly connecting three adjacent rectangular tubes; Wherein, the corner connector includes a base, three locking units and three plug-in members respectively fixed on three side surfaces of the base. An inner convex block is arranged at the end of the rectangular tube. The plug-in member is inserted into the end of the rectangular tube, and the locking unit presses the inner convex block against the side wall of the base from inside the rectangular tube.

2. The container frame structure according to claim 1, characterized in that, Four inner convex blocks are fixed at the end of the rectangular tube, and the four inner convex blocks are respectively located in the middle of the four inner walls of the rectangular tube. A limiting hole penetrating along the length direction of the rectangular tube is opened on the inner convex block.

3. A container frame structure according to claim 2, characterized in that, The plug-in member includes four support columns, and the four support columns respectively correspond to the four inner wall edges of the rectangular tube. The support columns are misaligned with the inner convex blocks. When the plug-in member is inserted into the end of the rectangular tube, the inner convex block is located between two adjacent support columns.

4. A container frame structure according to claim 3, characterized in that, The locking unit includes: A locking rod, and a through hole for the locking rod to pass through is opened on the base; A sliding seat, a threaded hole matched with the locking rod is opened on the sliding seat, and four pushing blocks respectively corresponding to the four support columns are fixed on the sliding seat; Wherein, two pressing mechanisms are arranged on the pushing block. When the sliding seat moves towards the plug-in member, the pressing mechanisms press against the inner convex block.

5. A container frame structure according to claim 4, characterized in that, The pressing mechanism includes a pressing block. A first guiding inclined surface is opened at one end of the pressing block close to the support column. A supporting block is fixed on the side surface of the other end of the pressing block. A second guiding inclined surface is opened at one end of the supporting block far from the pressing block. The supporting block is slidably installed on the pushing block. A third guiding inclined surface matched with the first guiding inclined surface is opened at one end of the support column close to the pushing block. A fourth guiding inclined surface matched with the second guiding inclined surface is opened on the pushing block; when the sliding seat moves towards the plug-in member so that the third guiding inclined surface and the fourth guiding inclined surface respectively abut against the first guiding inclined surface and the second guiding inclined surface, the pressing block and the supporting block move towards the adjacent pushing block, so that the pressing block faces the inner convex block.

6. A container frame structure as claimed in claim 5, wherein, A chute parallel to the fourth guiding inclined surface is opened on the pushing block. A sliding block slidably installed in the chute is fixed on the supporting block. A pushing wall matched with the end of the supporting block is opened on the pushing block. When the second guiding inclined surface slides to the end of the fourth guiding inclined surface, the end of the supporting block abuts against the pushing wall.

7. The container frame structure according to claim 5, wherein The pressing blocks in the two corresponding pressing mechanisms on two adjacent pushing blocks cooperate to press against the inner convex block and form a support for two adjacent support columns.

8. A container frame structure according to claim 5, characterized in that, A limiting pin is fixed on the pressing block. A receiving groove for accommodating the limiting pin is opened on the support column. A blind hole matched with the limiting pin is opened on the base; when the pressing block abuts against the inner convex block, the limiting pin passes through the limiting hole and is inserted into the blind hole.

9. The container frame structure according to claim 4, characterized in that, A hexagonal head is fixed at one end of the locking rod located inside the base. A sealing ring is sleeved on the locking rod between the hexagonal head and the side wall of the base.

10. A container frame structure according to claim 1, characterized in that, A sealing gasket is arranged between the base and the rectangular tube.

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