Folding container

Abstract

The utility model discloses a folding container, including the roof, the chassis, the door end, the front end, left side wall and right side wall, six settings can be enclosed and form the cuboid containing space, the folding container still includes end portion turnover unit, connecting rod mechanism and hinge unit, and this folding container sets up through including the structure of three being folded or unfolded. The folding container can be folded as a whole, and the load-bearing structure such as corner column, end beam does not need to break down and fold.

Description

TECHNICAL FIELD

[0001] The utility model relates to a container, especially a folding container. BACKGROUND

[0002] At present, the structure of the existing folding container is mostly side wall centering folding or end wall centering folding, which needs to process the whole container bearing part in a segmented manner, thus greatly affecting the bearing capacity of the container and requiring higher strength material, resulting in a high overall weight of the container. SUMMARY

[0003] The utility model discloses a folding container which can be folded as a whole, i.e. the door end, front end and side wall are lowered as a whole, without breaking the key bearing structures such as corner column and end beam, thus ensuring the bearing performance of the container.

[0004] The utility model discloses the following technical scheme to realize the above-mentioned purpose.

[0005] The utility model provides a folding container, including box top, chassis, door end, front end, left side wall and right side wall, six set up can enclose and form the containing space of cuboid, wherein, left side wall and right side wall relative parallel setting, door end and front end relative parallel setting, box top and chassis relative parallel setting, and box top is located in the upper of chassis, the four corner positions of box top are provided with top corner piece respectively, and the four corner positions of chassis are provided with bottom corner piece respectively, still include end part turnover unit, connecting rod mechanism and hinge unit, the folding container is set up as being folded or unfolded through including the structure of three,

[0006] Part of the hinge unit is connected with the bottom side beam of the chassis, and the other part is connected with the left side wall or the right side wall; the hinge unit includes a hinge pin; both the left side wall and the right side wall are arranged to rotate towards the inside of the containing space or reverse rotation with the hinge pin as the center;

[0007] Two edges of the box top extending along the length direction are respectively provided with guide rails, and the guide rails are provided with guide rail grooves;

[0008] The connecting rod mechanism includes a connecting rod and a pulley, one end of the connecting rod is rotatably connected with the top corner piece, and the other end is rotatably connected with the pulley through a connecting part; the pulley is arranged to be able to slide in the guide rail groove;

[0009] Part of the end turnover unit is connected with the bottom side beam of the chassis, and the other part is connected with the door end or the front end; the end turnover unit includes a rotating shaft; both the door end and the front end are arranged to rotate towards the inside of the containing space or reverse rotation with the rotating shaft as the center. In this way, the door end, the front end and the side wall can be lowered and folded as a whole.

[0010] This invention, through the design of the end-flipping unit, linkage mechanism, and guide rail groove, facilitates the lifting or lowering of the box top, thereby enabling the folding of the door end and front end. The hinge unit further facilitates the folding of the left and right side walls.

[0011] The folding container of this invention also uses fixed pulleys, top rope loops, ropes and cranes to assist in folding or unfolding.

[0012] This utility model's container can be unfolded when cargo needs to be transported and folded when empty, thereby reducing its footprint. In this utility model, the frame material for the top, bottom frame, front end, and door end can be high-strength, atmospheric corrosion-resistant Q450NQR1 steel plate; the left side wall, right side wall, and door panel can be made of 6-series aluminum alloy. This achieves weight reduction while ensuring load-bearing capacity. The container of this utility model has the same external dimensions as a standard 20-foot container when unfolded; when folded, its height is 595-600mm, approximately one-quarter of its unfolded size.

[0013] In this invention, the reverse rotation is the rotation from the folded state to the unfolded state.

[0014] According to the folding container of this utility model, preferably, the hinge unit is configured as multiple units; each hinge unit includes two hinge bodies, two hinge bases, and a hinge pin; the two hinge bodies are arranged relatively parallel to each other and connected by a hinge connecting plate; the hinge bodies have an L-shaped flat plate structure; the hinge bodies are connected to the bottom crossbeam of the left or right side wall through a reinforcing plate; the hinge bases are connected to the bottom side beam of the base frame; the hinge bases have a square structure; the hinge bodies are configured to be rotatably connected to the hinge bases through the hinge pin. This ensures stability during folding and facilitates the folding of the side walls.

[0015] Along the length of the base frame, the hinge unit and the third locking unit are alternately arranged.

[0016] According to the folding container of this utility model, preferably, the end flipping unit further includes a bearing bush and a bearing bush fixing plate; there are two bearing bush fixing plates, which are arranged parallel to each other and connected to the bottom side beam of the base frame; the bearing bush is disposed between the two bearing bush fixing plates; the bearing bush is matched with the rotating shaft and is configured for the rotating shaft to be inserted; the rotating shaft is connected to the front end sealing plate or the door end sealing plate. This ensures the structural stability of the door end and front end when folded, and also facilitates the folding of the door end and front end.

[0017] In this invention, the end flipping unit includes a front flipping unit and a door flipping unit, both of which have the same structure.

[0018] The folding container according to this utility model preferably further includes stiffening plates, a portion of which is connected to one of the bearing fixing plates, and another portion is connected to the bottom side beam of the underframe; in the unfolded state of the container, the stiffening plates are located above the bearings. This is beneficial to the structural stability of the end flipping unit.

[0019] The folding container according to this utility model preferably further includes a plurality of fixed pulleys, which are respectively disposed in the grooves of the corrugations on the left side wall and the right side wall, and are disposed near the top of the container.

[0020] The folding container according to this utility model preferably further includes a top rope loop, which is disposed on the side beam of the top of the container; the top rope loop is correspondingly disposed with the fixed pulley. This facilitates the folding of the auxiliary sidewalls.

[0021] According to the folding container of this utility model, preferably, it further includes a first locking unit, which is configured as a plurality of units; the first locking unit is connected to the top corner piece and is configured to lock the door end or front end to the top of the container by means of a first fixing pin.

[0022] According to the folding container of this utility model, preferably, it further includes a second locking unit, which is configured to be multiple; the second locking unit is connected to the bottom corner piece and is configured to lock the door end or front end to the base frame by a second fixing pin.

[0023] According to one embodiment of this utility model, the first locking unit includes a first fixing plate and a first fixing pin. The first fixing plate is connected to the top corner piece, and the first fixing pin can pass through the first fixing plate and the front end (or door end) in sequence. The second locking unit includes a second fixing plate and a second fixing pin. The second fixing plate is connected to the bottom corner piece, and the second fixing pin can pass through the second fixing plate and the front end (or door end) in sequence. This quick-connect locking structure is beneficial for improving efficiency and ensuring the strength of the container.

[0024] The folding container according to this utility model preferably further includes a third locking unit, which is configured in multiple ways as follows:

[0025] (1) A portion of the third locking unit is connected to the left wall or the right wall respectively, and another portion is connected to the base frame, which is configured to lock the left wall or the right wall to the base frame when the container is unfolded.

[0026] (2) A portion of the third locking unit is connected to the left wall or the right wall respectively, and another portion is connected to the top of the container, which is configured to lock the left wall or the right wall and the top of the container when the container is unfolded.

[0027] According to one embodiment of this utility model, the third locking unit includes a fixing block, a mounting block, a screw, a limiting nut, a connecting shaft, a first reinforcing plate, and a second reinforcing plate. Two mounting blocks are arranged parallel to each other and are fitted onto the connecting shaft. One end of the screw has a collar fitted onto the connecting shaft, and the other end of the screw has an external thread. The limiting nut has an internal thread and matches the screw. The fixing block is positioned above the mounting blocks; the fixing block and the mounting blocks are not connected but can be fitted together or separated. The fixing block has a fixing block groove for the screw to pass through. The limiting nut confines the screw within the fixing block groove, allowing the fixing block and the mounting block to fit together. The first reinforcing plate is connected to one side of the fixing block and can be welded together. The second reinforcing plate is connected to one side of the mounting block and can be welded together. Both the first and second reinforcing plates are located on the same side of the screw.

[0028] When the third locking unit is used to lock the side wall to the top of the box, the first reinforcing plate is connected to the side beam of the top of the box and can be welded together. The first reinforcing plate is a rectangular flat plate structure. The second reinforcing plate is connected to the cross beam on the side wall (specifically the cross beam on the left side wall or the cross beam on the right side wall) and can be welded together. The cross section of the second reinforcing plate is L-shaped and can be a reinforcing angle aluminum.

[0029] When the third locking unit is used to lock the side wall to the base frame, the first reinforcing plate is connected to the bottom beam of the side wall (specifically the bottom beam of the left side wall or the bottom beam of the right side wall) and can be welded together. The first reinforcing plate is a rectangular flat plate structure. The second reinforcing plate is connected to the bottom side beam and can be welded together. The second reinforcing plate is a rectangular flat plate structure.

[0030] The folding container according to this utility model preferably further includes sealing strips and rain eaves structures; the sealing strips are respectively disposed between the door end frame and the door leaf, between the left or right wall and the base frame, and between the left or right wall and the container roof; the rain eaves structures are respectively disposed on the upper side of the door leaf, and at the overlap of the left or right wall and the side beam of the container roof. This facilitates the sealing of the container.

[0031] This utility model's folding container can be folded downwards as a whole during hoisting, with the ends and side walls lowered as a whole, while key load-bearing structures such as corner posts and end beams remain intact. This results in excellent performance in terms of container deployment and folding time, operational efficiency, structural strength, and folding volume compression efficiency. Furthermore, this utility model employs a quick-connect locking mechanism, ensuring secure connections between the side walls and the top and bottom frame, the front end or door end and the top, and the front end or door end and the bottom frame, ensuring overall load-bearing capacity meets container requirements. In addition, due to the numerous overlapping and folding joints in the folding container, this utility model uses a rain gutter structure and sealing strips for multiple layers of sealing, enhancing sealing performance and preventing rainwater leakage. Attached Figure Description

[0032] Figure 1 This is a schematic diagram of a foldable container of this utility model in its unfolded state.

[0033] Figure 2 for Figure 1 A diagram from another perspective.

[0034] Figure 3 This is a schematic diagram of the internal structure of the container of this utility model.

[0035] Figure 4 This is a schematic diagram showing the relative positions of the hinge unit, the bottom side beam, and the left side wall of this utility model.

[0036] Figure 5 for Figure 4 A three-dimensional schematic diagram.

[0037] Figure 6 This is a schematic diagram of the linkage mechanism of this utility model.

[0038] Figure 7 This is a schematic diagram showing the relative positions of the front-end flipping unit, the front end, and the base frame in the end flipping unit of this utility model.

[0039] Figure 8-1 This is a schematic diagram showing the relative positions of the first locking unit, the top corner piece, and the front end of this utility model.

[0040] Figure 8-2 This is a schematic diagram of the structure of the first fixing plate of the first locking unit of this utility model.

[0041] Figure 8-3 This is a schematic diagram of the structure of the first fixing pin of the first locking unit of this utility model.

[0042] Figure 9-1 This is a schematic diagram showing the relative positions of the second locking unit, the bottom corner piece, and the front end of this utility model.

[0043] Figure 9-2This is a schematic diagram of the structure of the second fixing plate of the second locking unit of this utility model.

[0044] Figure 10 This is a schematic diagram showing the relative positions of the fixed pulley and the top rope ring of the box in this utility model.

[0045] Figure 11-1 This is a schematic diagram of the structure of a third locking unit of this utility model.

[0046] Figure 11-2 This is a schematic diagram of another third locking unit of this utility model.

[0047] Figure 11-3 for Figure 11-1 A schematic diagram of a third locking unit used to lock the side wall and the top of the box.

[0048] Figure 11-4 for Figure 11-2 A schematic diagram of another third locking unit used to lock the sidewall to the base frame.

[0049] Figure 12 This is a schematic diagram of the folding container of this utility model during the folding process.

[0050] Figure 13 This is a schematic diagram of the folding container of this utility model after it has been folded.

[0051] Figure 14 This is a schematic diagram of the first locking unit and the second locking unit of this utility model in the folded state of the container.

[0052] Figure 15 This is a schematic diagram showing the stacking of multiple foldable containers of this utility model in a folded state.

[0053] Figure 16 This is a schematic diagram illustrating the sealing between the door leaf and the door end frame of this utility model using a sealing strip.

[0054] The annotations in the attached figures are explained as follows:

[0055] 1-Top of box, 13-Top corner piece, 2-Base frame, 23-Bottom side beam, 24-Bottom corner piece, 3-Left side wall, 32-Left side wall bottom crossbeam, 4-Right side wall, 5-Front end, 52-Front end plate, 53-Front end vertical beam, 531-First vertical beam hole, 532-Second vertical beam hole, 6-Door end;

[0056] 123-Guide rail groove; 12-Linkage mechanism, 121-Linkage rod, 122-Pulley, 124-Connecting bolt, 125-Connecting rod fixing plate; 22-Hinge unit, 221-Hinge body, 2211-Hinge connecting plate; 222-Hinge base, 223-Hinge pin, 224-Reinforcing plate; 51-Front-end flipping unit, 511-Rotating shaft, 512-Bearing bush, 513-Firming plate, 514-Bearing bush fixing plate, 61-Door end flipping unit;

[0057] 11-First locking unit, 111-First fixing plate, 1111-First hole, 1112-First arc-shaped piece, 1113-First groove, 112-First fixing pin, 1121-Stop protrusion, 1122-First ring; 21-Second locking unit, 211-Second fixing plate, 2111-Second hole, 2112-Third hole, 2113-Second arc-shaped piece, 2114-Second groove, 212-Second fixing pin ; 31-Third locking unit, 311-Fixing block, 3111-Fixing block groove, 312-Mounting block, 313-Screw, 314-Limit nut, 315-Connecting shaft, 316-First reinforcing plate, 3171-Reinforcing plate A, 3172-Reinforcing plate B; 100-Top rope ring, 101-Top side beam, 300-Fixed pulley; 504-Sealing adhesive, 503-Rivet, 501-Sealing strip, 502-Pressure strip;

[0058] 301 - Horizontal beam on the side wall; 302 - Horizontal beam at the bottom of the side wall. Detailed Implementation

[0059] The present invention will be further described below with reference to specific embodiments, but the scope of protection of the present invention is not limited thereto.

[0060] Example 1

[0061] like Figures 1 to 3 As shown, the folding container of this utility model includes a top 1, a base frame 2, a left side wall 3, a right side wall 4, a front end 5, and a door end 6. These six components can be enclosed to form a cuboid-shaped storage space. The left side wall 3 and right side wall 4 are arranged parallel to each other, the door end 6 and front end 5 are arranged parallel to each other, and the top 1 and base frame 2 are arranged parallel to each other, with the top 1 located above the base frame 2. The folding container also includes an end-flipping unit, a linkage mechanism 12, and a hinge unit 22. The folding container is configured to be folded or unfolded through a structure comprising these three components.

[0062] The base frame 2 has bottom side beams 23 arranged along its length, with two bottom side beams 23 located on both sides of the base frame 2.

[0063] like Figures 3 to 5As shown, multiple hinge units 22 are configured. The hinge units 22 and the third locking unit 31 are alternately arranged along the length of the base frame 2. Some of these hinge units 22 are connected to one bottom side beam 23 and the left side wall 3 of the base frame 2, respectively. Other hinge units 22 are connected to another bottom side beam 23 and the right side wall 4 of the base frame 2, respectively. That is, both the left side wall 3 and the right side wall 4 can rotate inwards or in the opposite direction through the hinge units 22. Specifically, when the container is in the unfolded state, the left side wall 3 and the right side wall 4 rotate inwards into the storage space (i.e., from a position perpendicular to the base frame 2 to a position close to or substantially parallel to the base frame 2), causing the left side wall 3 and the right side wall 4 to fold; when the container is in the folded state, the left side wall 3 and the right side wall 4 rotate in the opposite direction (i.e., from a position close to or substantially parallel to the base frame 2 to a position perpendicular to the base frame 2), causing the left side wall 3 and the right side wall 4 to unfold.

[0064] The left wall 3 has a left wall bottom beam 32, and the right wall 4 has a right wall bottom beam. Both the left wall bottom beam 32 and the right wall bottom beam belong to the side wall bottom beam 302.

[0065] like Figure 5 As shown, each hinge unit 22 includes two hinge bodies 221, two hinge bases 222, a hinge pin 223, and a reinforcing plate 224. The two hinge bodies 221 are arranged parallel to each other and connected by a hinge connecting plate 2211. The hinge bodies 221 have an L-shaped flat structure. The hinge bodies 221 are connected to the left or right wall bottom beam 32 via the reinforcing plate 224 and can be welded together. The reinforcing plate 224 has an L-shaped structure and can be a reinforcing angle aluminum. The hinge bases 222 are connected to the bottom side beams 23 of the base frame 2 and can be welded together. The hinge bases 222 have a square, flat structure. The hinge bodies 221 are rotatably connected to the hinge bases 222 via the hinge pin 223, meaning the hinge bodies 221 can rotate around the hinge pin 223.

[0066] The hinge unit 22 connected to the left wall 3 and the right wall 4 has a different installation height, which allows the left wall 3 and the right wall 4 to fold inward in sequence.

[0067] like Figure 3 and Figure 6 As shown, guide rails are provided on the two edges of the top of the box 1 along its length, and the guide rails are provided with guide rail grooves 123. Figure 6 The connection relationship between the linkage mechanism 12 and the gate end 6 is shown.

[0068] like Figure 3As shown, four linkage mechanisms 12 are provided. The four linkage mechanisms 12 are located at the four corners of the container. Each linkage mechanism 12 includes a connecting rod 121, a pulley 122, a connecting bolt 124, and a connecting rod fixing plate 125. One end of the connecting rod 121 is rotatably connected to the corner piece 13 of the door end 6 (or front end 5) via the connecting bolt 124, and the other end is rotatably connected to the pulley 122 via a connecting part (in this embodiment, the connecting part is the connecting bolt 124). The pulley 122 can slide within the guide rail groove 123, that is, move along the length direction of the guide rail groove 123.

[0069] A connecting rod fixing plate 125 can be provided at the connection of the top corner piece 13 to strengthen the connection between the connecting rod 121 and the top corner piece 13.

[0070] When folding the container, first fold the right side wall 4 and the left side wall 3, then fold the top 1. When the top 1 folds downward toward the base frame 2, the door end 6 and the front end 5 are folded simultaneously through the cooperation of the linkage mechanism 12 and the guide rail groove 123.

[0071] like Figure 1 , Figure 2 and Figure 7 As shown, one part of the end-flipping unit is connected to the bottom side beam 23 of the base frame 2, and the other part is connected to the door end 6 (or front end 5). Both the door end 6 and the front end 5 can rotate inward or in the opposite direction towards the receiving space via the end-flipping unit. The end-flipping unit includes a front end flipping unit 51 and a door end flipping unit 61. The front end flipping unit 51 and the door end flipping unit 61 have the same structure.

[0072] Both the door end 6 and the front end 5 are equipped with sealing plates. The sealing plate of the front end 5 is the front sealing plate 52.

[0073] like Figure 7 As shown, the end-flipping unit is illustrated using the front-end flipping unit 51 as an example. The front-end flipping unit 51 includes a rotating shaft 511, a bearing bush 512, a bearing bush fixing plate 514, and a stiffening plate 513. There are two bearing bush fixing plates 514, arranged parallel to each other, and the bearing bush fixing plates 514 are horizontal (in the unfolded state of the container). The bearing bush fixing plates 514 are connected to the bottom side beam 23 of the underframe 2. The bearing bush 512 is positioned between the two bearing bush fixing plates 514 and has a cylindrical structure. A portion of the stiffening plate 513 is connected to one of the bearing bush fixing plates 514, and the other portion is connected to the bottom side beam 23 of the underframe 2. The stiffening plate 513 is located above the bearing bush 512. The bearing bush 512 matches the rotating shaft 511 for insertion. The rotating shaft 511 can rotate within the bearing bush 512. Figure 7The pivot 511 is shown connected to the front end plate 52. The front end 5 can rotate about the pivot 511 toward the interior of the receiving space or in the opposite direction. The flipping principle of the door end 6 is the same as that of the front end 5, and will not be described in detail here.

[0074] like Figure 10 As shown, the collapsible container also includes multiple fixed pulleys 300 and multiple top rope loops 100. The fixed pulleys 300 and top rope loops 100 assist in folding or unfolding the container. The fixed pulleys 300 are located in the grooves of the corrugations of the left side wall 3 and the right side wall 4, close to the top of the container 1. The top rope loops 100 are located on the side beams of the top of the container 1 (same as the side beam 101), corresponding to the fixed pulleys 300. This allows ropes to pass through the top rope loops 100 and the fixed pulleys 300, thereby applying external force to the left side wall 3 and the right side wall 4 by pulling the ropes, making them easier to fold or unfold. One end of the rope is tied to the top rope loop 100, and the other end is held by the operator.

[0075] In this invention, the folding container further includes a first locking unit 11, a second locking unit 21, and a third locking unit 31. The first locking unit 11 is used to lock the top 1 of the container with the door end 6 and the front end 5 after the container is unfolded. The second locking unit 21 is used to lock the base frame 2 with the door end 6 and the front end 5. The third locking unit is used to lock the left side wall 3, the right side wall 4 with the top 1 of the container, and the left side wall 3, the right side wall 4 with the base frame 2.

[0076] like Figure 1 , Figure 2 , Figure 3 , Figure 8-1 As shown, a portion of the first locking unit 11 is connected to the top corner piece 13, which locks the door end 6 (or front end 5) to the top of the box 1 via the first fixing pin 112. Specifically, as... Figure 8-1 , Figure 8-2 and Figure 8-3As shown, the first locking unit 11 includes a first fixing plate 111 and a first fixing pin 112. The first fixing plate 111 includes a first fixing plate body, which is a rectangular flat plate structure with a first hole 1111 and a first arc-shaped piece 1112. The first hole 1111 is for the insertion of the first fixing pin 112. The first hole 1111 is a circular hole. In use, a first groove 1113 is provided at the top of the first hole 1111, and the first groove 1113 communicates with the first hole 1111. The first arc-shaped piece 1112 is located below the first hole 1111, and the center of the arc of the first arc-shaped piece 1112 is close to the central axis of the first hole 1111. The first fixing pin 112 includes a first fixing pin body, which is a cylindrical structure. A stop protrusion 1121 and a first ring 1122 are provided on the first fixing pin body. The stop protrusion 1121 matches the first groove 1113. The first ring 1122 is rotatably disposed on the first fixing pin body. Figure 8-1 As shown, taking the locking between the front end 5 and the top 1 of the container as an example, the front end 5 is provided with a front vertical beam 53. The front vertical beam 53 is provided with a first vertical beam hole 531 (pin hole), and in the unfolded state of the container, the central axis of the first vertical beam hole 531 extends horizontally. The first fixing plate 111 is vertically connected to the top corner piece 13, and the first fixing plate 111 is located on the outside of the front end 5. When it is necessary to lock the top 1 of the container and the front end 5, the first fixing pin 112 is passed through the first hole 1111 and the first vertical beam hole 531 in sequence, the stop protrusion 1121 is embedded in the first groove 1113, and the first ring 1122 is fastened to the outer periphery of the first arc-shaped piece 1112, thus achieving the locking between the front end 5 and the top 1 of the container. When it is necessary to fold the top 1 of the container, the first fixing pin 112 is pulled out, and the top 1 of the container and the front end 5 are no longer locked. The locking principle between the top 1 of the container and the door end 6 is basically the same as the locking principle between the top 1 of the container and the front end 5, and will not be described in detail here.

[0077] like Figure 1 , Figure 2 and Figure 9-1 As shown, a portion of the second locking unit 21 is connected to the bottom corner piece 24, which locks the door end 6 (or front end 5) to the base frame 2 via the second fixing pin 212. Specifically, as... Figure 9-1 , Figure 9-2 As shown, the second locking unit 21 includes a second fixing plate 211 and a second fixing pin 212.

[0078] The second fixing plate 211 includes a body A and a body B; the outer contour of body B is a cuboid structure, and the outer contour of body A is similar to that of body B. In use, body A is located below body B, the thickness of body A is greater than the thickness of body B, the top surface of body A and the front surface of body B form a right angle, and the back surfaces of body A and body B are coplanar (within a plane). Figure 9-2(From a certain perspective); the back of body A has a recess with a trapezoidal cross-section. Body B has a second hole 2111, and body A has a third hole 2112. A second groove 2114 is provided at the top of the third hole 2112, and the second groove 2114 is connected to the third hole 2112. Both holes are circular. A second arc-shaped piece 2113 is provided below the third hole 2112. The center of the arc of the second arc-shaped piece 2113 is close to the central axis of the third hole 2112.

[0079] The structure of the second fixing pin 212 is the same as that of the first fixing pin 112. The second fixing pin 212 includes a second fixing pin body, on which a stop pin (with the same structure as the stop protrusion 1121) and a second ring (with the same structure as the first ring 1122) are provided. The stop pin matches the second groove 2114. The second ring can be fastened to the outer periphery of the second arc-shaped piece 2113. The locking between the front end 5 and the base frame 2 is described as an example. A second vertical beam hole 532 is provided below the front vertical beam 53. In the unfolded state, as... Figure 9-1 As shown, the central axis of the second vertical beam hole 532 extends horizontally. When it is necessary to lock the base frame 2 and the front end 5, the second fixing pin 212 is passed through the third hole 2112 and the second vertical beam hole 532 in sequence, the stop pin is embedded in the second groove 2114, and the second ring is fastened to the outer periphery of the second arc-shaped piece 2113, thereby completing the locking. When it is necessary to fold the front end 5, the second fixing pin 212 is pulled out, and the base frame 2 and the front end 5 are no longer locked. The locking principle between the base frame 2 and the door end 6 is the same as the locking principle between the base frame 2 and the front end, and will not be described again here.

[0080] like Figure 14 As shown, when the container is folded, the second locking unit 21 and the first locking unit 11 can be used together to lock the top 1 of the container to the base frame 2.

[0081] like Figure 3 , Figure 11-3 , Figure 11-4 As shown, there are multiple third locking units 31. Some of these third locking units 31 are connected to the left wall 3 and the base frame 2, respectively, while others are connected to the right wall 4 and the base frame, respectively. Some of these third locking units 31 are connected to the left wall 3 and the top of the box 1, respectively, while others are connected to the right wall 4 and the top of the box 1, respectively, thereby locking the left wall 3, the right wall 4 and the base frame 2, and locking the left wall 3, the right wall 4 and the top of the box 1, respectively.

[0082] Specifically, such as Figure 11-1 , Figure 11-2As shown, the third locking unit 31 includes a fixing block 311, a mounting block 312, a screw 313, a limiting nut 314, a connecting shaft 315, a first reinforcing plate 316, and a second reinforcing plate. The second reinforcing plate has two structural forms: one is an L-shaped reinforcing plate A3171, and the other is a rectangular flat plate B3172. The first reinforcing plate 316 is a rectangular flat plate.

[0083] Two mounting blocks 312 are arranged parallel to each other and both are fitted onto the connecting shaft 315. Specifically, the mounting block 312 has a cuboid structure with a circular hole in its center for the connecting shaft 315 to pass through. One end of the connecting shaft 315 is a fixed end, and the other end is a free end with threads. A positioning nut is provided on the free end of the connecting shaft 315 to limit the position of the mounting block 312.

[0084] One end of the screw 313 is provided with a collar, which can be rotatably fitted onto the connecting shaft 315 and is located between the two mounting blocks 312. The other end of the screw 313 is provided with an external thread.

[0085] The fixing block 311 and the mounting block 312 are not connected, but can be fitted together or separated. The fixing block 311 is provided with a fixing block groove 3111. The fixing block 311 includes a fixing block body, the outer contour of which is similar to a cuboid structure. The fixing block groove 3111 includes a groove C and a groove D. The groove C has three openings: openings at both ends and a middle opening. The cross-section of the openings at both ends is similar to a U-shape. The cross-section of the middle opening is rectangular. The groove D is located at one end of the opening of the groove C (i.e., formed on the basis of the groove C). The cross-section of the groove D is similar to a circle, and the diameter of the groove D is larger than the diameter of the arc of the groove C. The groove D can allow at least a portion of the limiting nut 314 to be screwed in.

[0086] The limiting nut 314 has an internal thread that matches the external thread of the screw 313. The screw 313 can pass through the groove 3111 of the fixing block. The limiting nut 314 can limit the screw 313 within the groove 3111 of the fixing block and make the fixing block 311 and the mounting block 312 fit together. The limiting nut 314 is a wing nut.

[0087] The first reinforcing plate 316 is connected to one side of the fixing block 311 (i.e., the side opposite to the middle opening of the groove C). The second reinforcing plate is connected to one side of the mounting block 312. Both the second reinforcing plate and the first reinforcing plate 316 are located on the same side of the screw 313. When the cross-section of the second reinforcing plate is L-shaped (i.e., reinforcing plate A3171), it consists of a horizontal plate and a vertical plate connected vertically. The vertical plate is connected to the mounting block 312, and the horizontal plate is located below the first reinforcing plate 316. When the second reinforcing plate is a rectangular flat plate B3172, the reinforcing plate B3172 is connected to the corresponding side of the mounting block 312.

[0088] like Figure 11-3 As shown, the first reinforcing plate 316, on the side away from the fixing block 311, is connected to the side beam 101 of the container top and can be welded together. The second reinforcing plate (i.e., reinforcing plate A3171) is connected to the cross beam 301 on the side wall and can be welded together. In the unfolded state of the container, the screw 313 is turned into the groove 3111 of the fixing block, and then the limiting nut 314 is used to limit the screw 313 within the groove 3111 of the fixing block. At this time, the fixing block 311 and the mounting block 312 are in contact, thereby locking the side wall (left side wall 3 or right side wall 4) to the container top 1.

[0089] like Figure 11-4 As shown, the first reinforcing plate 316, on the side away from the fixing block 311, is connected to the bottom crossbeam 302 of the side wall (the bottom crossbeam 32 of the left wall or the bottom crossbeam of the right wall) and can be welded together. The second reinforcing plate (i.e., reinforcing plate B 3172), on the side away from the mounting block, is connected to the bottom side beam 23 and can be welded together. In the unfolded state of the container, the screw 313 is turned into the groove 3111 of the fixing block, and then the limiting nut 314 is used to limit the screw 313 within the groove 3111 of the fixing block. At this time, the fixing block 311 and the mounting block 312 are in contact, thereby locking the side wall (the left wall 3 or the right wall 4) to the base frame 2.

[0090] When the container needs to be folded, the limit nut 314 is loosened, and the screw 313 can rotate freely and leave the groove of the fixing block 3111. The fixing block 311 and the mounting block 312 move away from each other, so the side wall (including the left side wall 3 and the right side wall 4) is no longer locked to the base frame 2, and the side wall is no longer locked to the container top 1, thereby folding the side wall and container top 1 onto the base frame 2.

[0091] The collapsible container also includes sealing strips and a rain shield structure. When the collapsible container is in the unfolded state, the door panels are sealed to the door end frames by the sealing strips, such as... Figure 16As shown, the sealing is achieved through the combined use of sealant 504, rivets 503, sealing strips 501, and pressure strips 502. A rain eaves structure is added to the upper side of the door leaf to enhance rainproof performance. The rain eaves structure can be L-shaped in cross-section. The side walls (including the left side wall 3 and the right side wall 4) are designed with an overlapping structure at the joints with both ends. A sealing strip with a large deformation capacity is adhered to the contact surface, and when the side wall is lifted, the sealing strip is pressed tightly for sealing.

[0092] The junction between the side wall and the bottom side beam 23 adopts a rain eaves structure, which is made of bent board material. This prevents rainwater from directly washing away the sealed gaps and causing leakage. At the same time, sealing strips are affixed to the gaps for sealing. The junction between the side wall and the upper side beam of the box roof 1 (which has the same meaning as the box roof side beam 101) is designed with a rain eaves structure. The upper side beam covers the upper part of the side wall, and a sealing strip is installed on the contact surface.

[0093] Example 2 - Method of folding

[0094] The following describes a method for folding the foldable container as described in Example 1, including the following steps:

[0095] 1-1) When the folding container is in the unfolded state, that is, when the container needs to be folded, pass the rope through the fixed pulley 300 of the right side wall 4 and the corresponding top rope loop 100. Then open the third locking unit 31. Through the cooperation of the fixed pulley 300 and the top rope loop 100, the right side wall 4 rotates into the receiving space with the hinge pin 223 of the hinge unit 22 as the center until the right side wall 4 rotates from a position perpendicular to the base frame 2 to a position against the base frame 2. Then release the rope.

[0096] 1-2) Then open the third locking unit 31 of the left wall 3, and rotate the left wall 3 from the position perpendicular to the base frame 2 to the position against the right wall 4 in the same way as the right wall 4.

[0097] 1-3) Open the first locking unit 11 and the second locking unit 12. Use the crane's spreader to lift the container top 1, causing the connecting rod 121 to rotate the front end 5 and the door end 6 around the pivot 511 of the end flipping unit into the receiving space until they reach their maximum rotation angle. Then, lower the spreader, causing the container top 1, front end 5, and door end 6 to fold inward synchronously until front end 5 and door end 6 rotate to a position close to the left side wall 3. The container top 1 then descends to a position close to front end 5 and door end 6, completing the container folding. (Refer to...) Figure 12 , Figure 13 As shown.

[0098] It may also include the following steps: such as Figure 14As shown, after the container is folded, the top 1 and the base frame 2 are locked together by the first locking unit 11 and the second locking unit 21. The first fixing pin 112 passes through the first hole 1111 and the second hole 2111 in sequence.

[0099] It may also include the following steps: such as Figure 15 As shown, the folded containers are lifted using a spreader and stacked on top of other folded containers.

[0100] Example 3 - Method of unfolding

[0101] The following describes a method for unfolding the container in the folded state in Example 2, including the following steps:

[0102] 2-1) When the container is in the folded state, the first locking unit 11 and the second locking unit 12 are opened, and the container top 1 is lifted to a predetermined height using the crane's spreader. This causes the front end 5 and the door end 6 to rotate to their maximum angle around the pivot 511 of the end flipping unit via the linkage mechanism 12. Then, the operator pushes the front end 5 and the door end 6 to flip outward until they are perpendicular to the base frame 2. The operator then holds the position of the front end 5 and the door end 6 until the container top 1 is lowered to a predetermined position. The first locking unit 11 then locks the front end 5 and the door end 6 to the container top 1. The second locking unit 21 then locks the front end 5 and the door end 6 to the base frame 2.

[0103] 2-2) Then the rope is passed through the fixed pulley 300 of the right wall 4 and the corresponding top rope loop 100. The rope is pulled so that the right wall 4 rotates outward about the hinge pin 223 of the hinge unit 22 until it rotates to a position perpendicular to the base frame 2. Then the right wall 4 is locked to the base frame 2 by the third locking unit 31; and the right wall 4 is locked to the top of the box 1.

[0104] 2-3) Following the method of unfolding the right side wall 4, unfold the left side wall 3 and lock the left side wall 3 to the base frame 2 through the third locking unit 31; and lock the left side wall 3 to the top of the container 1, thereby completing the unfolding of the container.

[0105] This utility model is not limited to the above-described embodiments. Any modifications, improvements, or substitutions that can be conceived by those skilled in the art without departing from the essential content of this utility model fall within the scope of this utility model.

Claims

1. A collapsible container, comprising a top, a base frame, a door, a front end, a left side wall, and a right side wall, the six components of which are configured to enclose and form a rectangular prism-shaped storage space, wherein... The left and right walls are arranged parallel to each other, the door end and the front end are arranged parallel to each other, and the top and bottom frame are arranged parallel to each other, with the top of the box located above the bottom frame; corner brackets are provided at the four corners of the top of the box, and corner brackets are provided at the four corners of the bottom frame; its characteristic is that... It also includes an end-flipping unit, a linkage mechanism, and a hinge unit, and the folding container is configured to be folded or unfolded by a structure including these three components; One part of the hinge unit is connected to the bottom side beam of the base frame, and the other part is connected to the left side wall or the right side wall; the hinge unit includes a hinge pin; both the left side wall and the right side wall are configured to be able to rotate inward or in the opposite direction about the hinge pin as the center of the receiving space; The top of the box is provided with guide rails on its two edges extending along its length, and the guide rails are provided with guide rail grooves; The linkage mechanism includes a connecting rod and a pulley. One end of the connecting rod is rotatably connected to the corner piece, and the other end is rotatably connected to the pulley through a connecting part. The pulley is configured to slide within the guide rail groove. One part of the end-flipping unit is connected to the bottom side beam of the base frame, and the other part is connected to the door end or the front end; the end-flipping unit includes a pivot; both the door end and the front end are configured to be able to rotate inward or in the opposite direction about the accommodating space with the pivot as the center.

2. The folding container according to claim 1, characterized in that, The hinge unit is configured as multiple units; each hinge unit includes two hinge bodies, two hinge bases, and one hinge pin; the two hinge bodies are arranged relatively parallel to each other and connected by a hinge connecting plate; the hinge bodies have an L-shaped flat plate structure; the hinge bodies are connected to the bottom beam of the left or right wall through a reinforcing plate; the hinge bases are connected to the bottom side beam of the base frame; the hinge bases have a square structure; the hinge bodies are configured to be rotatably connected to the hinge bases through the hinge pin.

3. The folding container according to claim 1, characterized in that, The end flipping unit also includes a bearing and a bearing fixing plate; there are two bearing fixing plates, which are arranged parallel to each other and connected to the bottom side beam of the base frame; the bearing is disposed between the two bearing fixing plates; the bearing matches the rotating shaft and is configured for the rotating shaft to be inserted; the rotating shaft is connected to the front sealing plate or the door sealing plate.

4. The folding container according to claim 3, characterized in that, It also includes stiffening plates, a portion of which is connected to one of the bearing fixing plates and another portion is connected to the bottom side beam of the underframe; in the unfolded state of the container, the stiffening plates are located above the bearings.

5. The folding container according to claim 1, characterized in that, It also includes multiple fixed pulleys, which are respectively set in the grooves of the corrugations on the left wall and the right wall, and are located near the top of the box.

6. The folding container according to claim 5, characterized in that, It also includes a top rope loop, which is set on the side beam of the top of the box; the top rope loop is correspondingly set with the fixed pulley.

7. The folding container according to claim 1, characterized in that, It also includes a first locking unit, which is configured to be multiple; the first locking unit is connected to the top corner piece and is configured to lock the door end or front end to the top of the box by means of a first fixing pin.

8. The folding container according to claim 7, characterized in that, It also includes a second locking unit, which is configured to be multiple; the second locking unit is connected to the bottom corner piece and is configured to lock the door end or front end to the base frame by means of a second fixing pin.

9. The folding container according to claim 8, characterized in that, It also includes a third locking unit, which is configured in multiple ways as follows: (1) A portion of the third locking unit is connected to the left wall or the right wall respectively, and another portion is connected to the base frame, which is configured to lock the left wall or the right wall to the base frame when the container is unfolded. (2) A portion of the third locking unit is connected to the left wall or the right wall respectively, and another portion is connected to the top of the container, which is configured to lock the left wall or the right wall and the top of the container when the container is unfolded.

10. The folding container according to claim 1, characterized in that, It also includes sealing strips and rain eaves structures; the sealing strips are respectively set between the door end frame and the door leaf, between the left or right wall and the base frame, and between the left or right wall and the top of the box; the rain eaves structures are respectively set on the upper side of the door leaf, and at the overlap of the left or right wall and the side beam of the top of the box.

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