A container skeleton structure

Abstract

The present invention discloses a container skeleton structure, belonging to the field of container technology, comprising twelve rectangular tubes and eight corner connectors. The twelve rectangular tubes enclose a rectangular frame structure; the eight corner connectors are respectively located at the eight vertices of the frame structure and are used to fix and connect three adjacent rectangular tubes. The corner connectors designed in the present invention can be fixed from the inside of the rectangular tubes, and three locking units can be respectively inserted into the three adjacent rectangular tubes. The inner protrusions at the ends of the rectangular tubes are pressed against the side walls of the base by the locking units to achieve the connection between the rectangular tubes and the base. The latch member serves as a supporting structure and can be inserted into the rectangular tubes to provide support from the inside of the rectangular tubes to ensure that the connection between the rectangular tubes and the base has sufficient supporting force. By prefabricating the corner connectors and the rectangular tubes, the container skeleton can be quickly connected, facilitating the transportation of container accessories and the assembly of the container.

Description

Technical Field

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

[0002] Existing containers consist of four corner posts, upper and lower side beams, multiple bottom crossbeams, and a lintel. Corrugated sidewall panels are welded between the upper and lower side beams. During the manufacturing process, the corner posts, side beams, and bottom crossbeams are all welded together. While welded containers meet the required strength and waterproofing, the manufacturing process is cumbersome and requires high-quality manufacturing techniques. Some current large logistics vehicles use a skeleton truck with a container body. Because the top of the container body is less stressed, prefabricated containers are also gaining adoption.

[0003] There are still some problems with existing assembled containers: the frames are usually connected with a large number of bolts, which makes assembly slow, and the bolts usually penetrate the frame structure horizontally, which also makes the subsequent waterproofing of the entire container difficult. Summary of the Invention

[0004] In view of the above-mentioned technical deficiencies, the purpose of the present invention is to provide a container skeleton structure, which improves assembly efficiency by designing corner connectors, connects the rectangular tubes with the corner connectors from the inside of the rectangular tubes, and avoids perforating the outer walls of the rectangular tubes.

[0005] In order to solve the above technical problems, the present invention adopts the following technical solution: The present invention provides a container skeleton structure, comprising:

[0006] Twelve rectangular tubes, wherein the twelve rectangular tubes are surrounded by a rectangular frame structure;

[0007] Eight corner connectors, each located at eight vertices of the frame structure and used to securely connect three adjacent rectangular tubes;

[0008] Among them, the corner connector includes a base, three locking units and three latch parts respectively fixed on the three sides of the base. The end of the rectangular tube is provided with an inner protrusion, the latch part is inserted into the end of the rectangular tube, and the locking unit presses the inner protrusion against the side wall of the base from inside the rectangular tube.

[0009] Preferably, four inner convex blocks are fixed to the ends 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. The inner convex blocks are provided with limiting holes that pass through the length direction of the rectangular tube.

[0010] Preferably, the latch member includes four support columns, which respectively correspond to the four inner wall edges of the rectangular tube. The support columns are staggered with the inner protrusions. When the latch member is inserted into the end of the rectangular tube, the inner protrusion is located between two adjacent support columns.

[0011] Preferably, the locking unit comprises:

[0012] A locking rod, wherein the base is provided with a through hole for the locking rod to pass through;

[0013] A slide seat, wherein a threaded hole is provided on the slide seat for cooperating with the locking rod, and four push blocks corresponding to the four support columns are fixed on the slide seat;

[0014] Wherein, two pressing mechanisms are provided on the pushing block, and when the sliding seat moves toward the latch member, the pressing mechanisms press against the inner protrusion.

[0015] Preferably, the clamping mechanism includes a clamping block, the clamping block is provided with a first guide slope at one end close to the support column, a support block is fixed to the side surface of the other end of the clamping block, the support block is provided with a second guide slope at one end away from the clamping block, the support block is slidably mounted on the push block, the support column is provided with a third guide slope that cooperates with the first guide slope at one end close to the push block, and the push block is provided with a fourth guide slope that cooperates with the second guide slope; when the slide moves toward the latch member, so that the third guide slope and the fourth guide slope respectively abut against the first guide slope and the second guide slope, the clamping block and the support block move toward the adjacent push block, so that the clamping block faces the inner convex block.

[0016] Preferably, the push block is provided with a sliding groove parallel to the fourth guide inclined surface, the support block is fixed with a slider slidably installed in the sliding groove, and the push block is provided with a push wall that cooperates with the end of the support block. When the second guide inclined surface slides to the end of the fourth guide inclined surface, the end of the support block rests on the push wall.

[0017] Preferably, the pressing blocks in the two corresponding pressing mechanisms on the two adjacent push blocks cooperate to press against the inner protrusions and form support for the two adjacent support columns.

[0018] Preferably, a limit pin is fixed on the clamping block, a receiving groove for accommodating the limit pin is provided on the support column, and a blind hole cooperating with the limit pin is provided on the base; when the clamping block is pressed against the inner protrusion, the limit pin passes through the limit hole and is inserted into the blind hole.

[0019] Preferably, a hexagonal head is fixed to one end of the locking rod located in the base, and a sealing ring is sleeved on the locking rod between the hexagonal head and the side wall of the base.

[0020] Preferably, a sealing gasket is provided between the base and the rectangular tube.

[0021] The beneficial effects of the present invention are:

[0022] The container skeleton structure designed by the present invention adopts rectangular tubes as the main supporting parts, and the connection between the rectangular tubes is realized by the 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 tube, and the three locking units can be respectively inserted into the 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 tube 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, which keeps the outer wall of the rectangular tube simple. The locking unit designed by the present invention includes a locking rod and a slide seat. The slide seat can be inserted into the rectangular tube. By rotating the locking rod, the slide seat moves toward the inner protrusion in the rectangular tube, and the designed tightening mechanism is used to displace the tightening block. The tightening block can not only move between the support columns to form support for the support columns and further enhance the strength of the support columns, but also can press against the inner protrusion to prevent the rectangular tube from detaching from the support columns, thereby ensuring the stability of the connection. BRIEF DESCRIPTION OF THE DRAWINGS

[0023] In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the following briefly introduces the drawings required for use in the embodiments or the description of the prior art. 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 any creative work.

[0024] Figure 1 A three-dimensional diagram of the overall structure of a container skeleton structure provided by an embodiment of the present invention.

[0025] Figure 2 Schematic diagram of the connection between the corner connector and three rectangular tubes of the present invention.

[0026] Figure 3 Schematic diagram of the dislocation distribution of the push block and the inner protrusion block of the present invention.

[0027] Figure 4 Schematic diagram of the cooperation between the locking unit of the present invention and the support column in the initial state.

[0028] Figure 5 This is a top view of the corner connector of the present invention in a fixed state with the rectangular tube.

[0029] Figure 6 for Figure 5 Cross-sectional view at AA in the middle.

[0030] Figure 7 for Figure 6A partial enlarged view of point A in the middle.

[0031] Figure 8 This is a schematic diagram of the cooperation between the locking unit of the present invention and the support column in the working state.

[0032] Figure 9 It is a structural schematic diagram of the end portion of the rectangular tube of the present invention.

[0033] Figure 10 It is a structural schematic diagram of the slide seat of the present invention.

[0034] Figure 11 It is a structural schematic diagram of the base and the latch member of the present invention.

[0035] Description of reference numerals:

[0036] 1. Rectangular tube, 11. Inner convex block, 111. Limiting hole, 2. Corner connector, 21. Base, 211. Through hole, 212. Blind hole, 213. Sealing gasket, 22. Locking unit, 221. Locking rod, 2211. Hexagonal head, 2212. Sealing ring, 222. Sliding seat, 2221. Threaded hole, 2222. Push block, 22221. Protrusion, 223. Tightening block, 2231. First guide slope, 224. Support block, 2241. Second guide slope, 225. Fourth guide slope, 226. Slide, 227. Push wall, 228. Limiting pin, 23. Latch, 231. Support column, 2311. Third guide slope, 2312. Storage slot, 2313. Inner groove, 3. Connecting plate, 4. Bracket, 5. Ground beam. DETAILED DESCRIPTION

[0037] The following will clearly and completely describe the technical solutions in the embodiments of the present invention in conjunction with the accompanying drawings. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making creative efforts are within the scope of protection of the present invention.

[0038] Example 1:

[0039] like Figures 1 to 11 As shown, the first embodiment of the present invention provides a container skeleton structure, including twelve rectangular tubes 1 and eight corner connectors 2. The twelve rectangular tubes 1 form a rectangular frame structure, and the eight corner connectors 2 are respectively located at the eight vertices of the frame structure. Each corner connector 2 is responsible for fixing and connecting three adjacent rectangular tubes 1, and finally assembling into a container skeleton. Figure 1As shown, the rectangular tubes 1 are welded with connecting plates 3 for connecting the container's side walls and roof. Brackets 4 for mounting container floor beams 5 are welded to the two lower rectangular tubes 1. These floor beams 5 support the container's wooden floor. The rectangular tubes 1 and corner connectors 2 designed in this invention are prefabricated. When bulk container frames are needed, the rectangular tubes 1 and corner connectors 2 can be transported and then assembled into a frame structure upon arrival at the destination, significantly reducing shipping space and costs.

[0040] like Figure 9 As shown, the rectangular tube 1 of the present invention is welded with four inner protrusions 11 at the end. These protrusions 11 are located within the interior of the rectangular tube 1 and in the middle of the four inner walls of the rectangular tube 1. The four inner corners of the rectangular tube 1 provide mounting space for the corner connectors 2. The inner protrusions 11 are also provided with limiting holes 111 that extend through the inner protrusions 11 along the length of the rectangular tube 1.

[0041] The corner connector 2 of the present invention comprises a rectangular base 21, three locking units 22, and three latches 23 fixed to three adjacent sides of the base 21. The three sides of the base 21 facing away from the latches 23 are provided with clearance slots to facilitate adjustment of the locking units 22.

[0042] like Figure 11 As shown, each latch member 23 includes four support posts 231, which correspond to the four inner wall edges of the rectangular tube 1. Such support posts 231 are offset from the inner protrusions 11. When the latch member 23 is inserted into the end of the rectangular tube 1, the support posts 231 do not interfere with the inner protrusions 11. Furthermore, each inner protrusion 11 is positioned between two adjacent support posts 231. The three locking elements 22 are also initially offset from the inner protrusions 11, allowing the locking elements 22 to be inserted into the rectangular tube 1.

[0043] like Figure 4 and Figure 10 As shown, the locking unit 22 of the present invention includes a locking rod 221 and a slide 222. The slide 222 has a threaded hole 2221 extending therethrough, and the locking rod 221 has threads that mate with the threaded hole 2221. A hexagonal head 2211 is fixed to one end of the locking rod 221. The base 21 has a through hole 211 that mates with the locking rod 221, through which the locking rod 221 can pass. The slide 222 is sleeved onto the locking rod 221. In the initial state, the slide 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 slide 222 to move within the rectangular tube 1 toward the base 21.

[0044] 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, one located on each side of the push block 2222. The inner wall of one side of the rectangular tube 1 corresponds to the two abutting mechanisms 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 staggering the support column 231 and abutting the inner protrusion 11, thereby fixing the rectangular tube 1 to the base 21.

[0045] like Figure 10 and Figure 11 As shown, the abutting mechanism specifically includes a abutting block 223, a support block 224, and a mounting slot defined on the push block 2222. Two slides 226 are defined at the bottom of the mounting slot, and two sliders are fixed to the bottom of the support block 224, which slide in the slides 226. Thus, the support block 224 is slidably mounted in the mounting slot. The abutting block 223 is fixed to one side of the support block 224 and extends beyond the mounting slot. A first guide ramp 2231 is defined on the end of the abutting block 223 proximal to the support column 231, and a second guide ramp 2241 is defined on the end of the support block 224 distal to the abutting block 223. A fourth guide ramp 225 is defined on the wall of the mounting slot, which cooperates with the second guide ramp 2241. A third guide ramp 2311 is defined on the end of the support column 231 distal to the base 21, which cooperates with the first guide ramp 2231. The fourth guide ramp 225 is parallel to the slides 226. A push wall 227 connected to the fourth guide slope 225 is further provided on the groove wall of the installation groove. The push wall 227 is used to cooperate with the end of the support block 224.

[0046] like Figure 4 、 Figure 8 、 Figure 10 and Figure 11As shown, in the initial state, the first guide slope 2231 of the abutting block 223 abuts the third guide slope 2311 of the support column 231, and the second guide slope 2241 of the support block 224 abuts the fourth guide slope 225 of the push block 2222. As the slide 222 gradually moves toward the base 21, the third guide slope 2311 and the fourth guide slope 225 push the first guide slope 2231 and the second guide slope 2241, respectively, causing the support block 224 to move along the slide groove 226. This causes the abutting block 223 to gradually stagger away from the support column 231 and move toward the adjacent push block 2222 until the second guide slope 2241 slides to the end of the fourth guide slope 225. At this point, the end of the support block 224 abuts against the push wall 227, while the abutting block 223 is completely staggered away from the support column 231, with one sidewall of the abutting block 223 abutting against one sidewall of the support column 231. The two adjacent abutting blocks 223 on two adjacent push blocks 2222 abut against each other and face the inner protrusion 11. As the slide 222 moves further, the two abutting blocks 223 eventually abut against the inner protrusion 11. These two abutting blocks 223 support two adjacent support columns 231, forming a rectangular frame structure with four support columns 231 and eight abutting blocks 223, further enhancing the structural strength of the latch 23. Simultaneously, the abutting blocks 223 push the support columns 231 against the inner wall of the rectangular tube 1, creating an interference fit between the support columns 231 and the inner wall of the rectangular tube 1, further enhancing the strength of the connection.

[0047] When using, Figure 4 As shown, the locking unit 22 can be installed on the base 21 first, so that the slide 222 is away from the support column 231, and then the rectangular tube 1 is put on the slide 222 and the support column 231. After that, the hexagonal head 2211 is rotated to move the base 21 in the rectangular tube 1 toward the support column 231, and finally the tightening block 223 is pressed against the inner protrusion 11 and the side wall of the support column 231 to achieve a stable connection between the base 21 and the rectangular tube 1, and complete the assembly of the container frame.

[0048] Example 2:

[0049] Based on the first embodiment, the present invention proposes a second embodiment to further enhance the stability of the connection. Figure 10 As shown, a limit pin 228 is fixed on the pressing block 223. Figure 11 As shown, a receiving groove 2312 for accommodating the limiting pin 228 is provided on the side of the support column 231. Figure 7 As shown, the base 21 is provided with a blind hole 212 that cooperates with the limiting pin 228. When the pressing block 223 presses against the inner convex block 11, the two adjacent limiting pins 228 located on the two pushing blocks 2222 pass through the limiting hole 111 on the inner convex block 11 and are inserted into the same blind hole 212. Figure 7When viewed from the reference point, the abutment block 223 and the base 21 cooperate to form a lateral limit for the inner protrusion 11, while the limit pin 228 forms a longitudinal limit for the inner protrusion 11, further strengthening the connection strength between the rectangular tube 1 and the corner connector. Simultaneously, a protrusion 22221 is provided on the end of the push block 2222 near the support column 231, and an inner groove 2313 is provided on the support column 231. When the abutment block 223 abuts the inner protrusion 11, the protrusion 22221 can be inserted into the inner groove 2313, strengthening the connection between the push block 2222 and the support column 231.

[0050] Example 3:

[0051] Based on the first and second embodiments, the present invention further improves the container frame. Figure 7 As shown, a sealing ring 2212 is mounted on the locking rod 221 between the hexagonal head 2211 and the side wall of the base 21. The sealing ring 2212 prevents external moisture from entering the rectangular tube 1 through the through hole 211 of the base 21. A sealing gasket 213 is also disposed between the base 21 and the rectangular tube 1. The sealing gasket 213 encases the four support columns 231, preventing external moisture from entering the rectangular tube 1 through the connection between the rectangular tube 1 and the base 21. This arrangement effectively prevents rainwater and moisture from entering the interior of the rectangular tube 1, protects the locking rod 221 and support columns 231, and prevents internal rust, thereby extending the service life of the container frame.

[0052] Obviously, those skilled in the art may make various changes and modifications to the present invention without departing from the spirit and scope of the present invention. Thus, if such changes and modifications fall within the scope of the claims and their equivalents, the present invention is intended to include such changes and modifications.

Claims

1. A container skeleton structure, characterized in that: include: Twelve rectangular tubes, wherein the twelve rectangular tubes are surrounded by a rectangular frame structure; Eight corner connectors, each located at eight vertices of the frame structure and used to securely connect three adjacent rectangular tubes; The corner connector includes a base, three locking units, and three latches fixed to three sides of the base, respectively. An inner convex block is provided at the end of the rectangular tube. The latch is inserted into the end of the rectangular tube. The locking units press the inner convex block against the side wall of the base from inside the rectangular tube. Four inner convex blocks are fixed to the ends 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. The inner convex blocks are provided with limiting holes that pass through the length direction of the rectangular tube; The latch member includes four support columns, which correspond to the four inner wall edges of the rectangular tube respectively. The support columns are staggered with the inner protrusions. When the latch member is inserted into the end of the rectangular tube, the inner protrusion is located between two adjacent support columns.

2. A container skeleton structure according to claim 1, characterized in that: The locking unit comprises: A locking rod, wherein the base is provided with a through hole for the locking rod to pass through; A slide seat, wherein a threaded hole is provided on the slide seat for cooperating with the locking rod, and four push blocks corresponding to the four support columns are fixed on the slide seat; Wherein, two pressing mechanisms are provided on the pushing block, and when the sliding seat moves toward the latch member, the pressing mechanisms press against the inner protrusion.

3. A container skeleton structure according to claim 2, characterized in that: The clamping mechanism includes a clamping block, wherein the clamping block is provided with a first guide slope at one end close to the support column, and a support block is fixed to the side surface of the other end of the clamping block, and the support block is provided with a second guide slope at one end away from the clamping block. The support block is slidably mounted on the push block, and the support column is provided with a third guide slope that cooperates with the first guide slope at one end close to the push block, and the push block is provided with a fourth guide slope that cooperates with the second guide slope; when the slide moves toward the latch member, so that the third guide slope and the fourth guide slope respectively abut against the first guide slope and the second guide slope, the clamping block and the support block move toward the adjacent push block, so that the clamping block faces the inner convex block.

4. A container skeleton structure according to claim 3, characterized in that: The push block is provided with a sliding groove parallel to the fourth guide inclined surface, the support block is fixed with a slider slidably installed in the sliding groove, and the push block is provided with a push wall that cooperates with the end of the support block. When the second guide inclined surface slides to the end of the fourth guide inclined surface, the end of the support block rests on the push wall.

5. A container skeleton structure according to claim 3, characterized in that: The pressing blocks in the two corresponding pressing mechanisms on the two adjacent pushing blocks cooperate to press against the inner protrusions and form support for the two adjacent supporting columns.

6. A container skeleton structure according to claim 3, characterized in that: A limit pin is fixed on the clamping block, a receiving groove for accommodating the limit pin is provided on the support column, and a blind hole cooperating with the limit pin is provided on the base; when the clamping block is pressed against the inner protrusion, the limit pin passes through the limit hole and is inserted into the blind hole.

7. A container skeleton structure according to claim 2, characterized in that: A hexagonal head is fixed on one end of the locking rod located in the base, and a sealing ring is sleeved on the locking rod between the hexagonal head and the side wall of the base.

8. The container skeleton structure according to claim 1, characterized in that: A sealing gasket is provided between the base and the rectangular tube.

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