A reversible aisle board and folding frame case having the same

Abstract

The utility model relates to the field of container, concretely is a kind of reversible passageway board, is set in the chassis platform of folding frame box, the passageway board is connected with the end beam body upside of the chassis platform by overturning hinge, and back is provided with collapsible triangular bracing. After overturning, the front of the passageway board is upwards and provides person walking, the utility model is set reversible passageway board in the inverted folding frame box end part, to realize that staff walks operation on chassis platform, and does not occupy the load space of chassis platform.

Description

Technical Field

[0001] This utility model relates to the field of containers, specifically a flip-up aisle panel and a folding frame box having the same. Background Technology

[0002] In an inverted folding frame container, the end frames are located below the underframe platform, requiring the container to be lifted for unfolding and folding. When several unfolded folding frame containers are lined up to load goods, the underframe platform, acting as a second-level loading platform, often requires workers to operate above it, but the loading space is limited, making it difficult for workers to move around. Utility Model Content

[0003] The purpose of this invention is to provide a foldable walkway panel and a folding frame box having the same, in order to solve the problems mentioned in the background art.

[0004] To achieve the above objectives, this utility model provides the following technical solution: A flip-up walkway is installed on the base platform of a folding frame box. The walkway is connected to the upper side of the end beam of the base platform via a flip hinge. The walkway has a folded state and an unfolded state: in the folded state, the front of the walkway is facing down and in contact with the base platform; in the unfolded state, the front of the walkway is facing up and is open to pedestrians, and a foldable triangular brace is provided on the back.

[0005] Preferably, the flip hinge includes a hinge base and a hinge plate. The hinge base is fixed to the upper side of the end beam, and the hinge plate is connected to the hinge base via hinge pins. The hinge pins are arranged along the width direction of the base platform. The passageway plate is fixed to the hinge plate and can be flipped 180 degrees via the flip hinge.

[0006] Preferably, the triangular brace includes a horizontal brace, a vertical brace, and an oblique brace. The horizontal brace is parallel to the length direction of the base platform and is fixed to the back of the passageway panel. The two ends of the vertical brace are respectively hinged to the ends of the horizontal brace and the oblique brace. The other end of the oblique brace is provided with a pin hole. The horizontal brace also has two sets of pin holes along its length direction. The end of the oblique brace can be fixed to different positions of the horizontal brace using pins to achieve storage and support.

[0007] Preferably, an end crossbeam and an end longitudinal beam are fixed to the outer side of the end beam body. The end crossbeam is located on the upper side of the end of the base frame platform, and the end longitudinal beam is perpendicular to the end crossbeam and located below it.

[0008] Preferably, a support pad is fixed on the end longitudinal beam, and a support block is fixed at the bottom end of the support pad. When the triangular support is raised and the passageway panel is unfolded, the back side of the vertical support is attached to the end cross beam and the support pad, and is located exactly above the support block.

[0009] Preferably, the back of the passageway panel is fixed with a back crossbeam and a back longitudinal beam. The back crossbeam is located at both sides of the passageway panel, and there are multiple back longitudinal beams, all of which are perpendicular to the back crossbeam. When the passageway panel is unfolded, the back crossbeam near the flip hinge falls above the end crossbeam.

[0010] Preferably, the triangular brace is disposed between two adjacent back longitudinal beams, and its surface does not exceed the surface height of the back longitudinal beams when stored.

[0011] Preferably, a locking assembly is provided between the front of the walkway panel and the end beam body, which can relatively fix the walkway panel and the base frame platform when the walkway panel is in the unfolded state.

[0012] Preferably, the locking assembly includes a fixed lug and a bolting lug, the fixed lug and the bolting lug being parallel to each other and both perpendicular to the walkway panel; the fixed lug is fixed to the upper side of the end beam and has a first locking hole; the bolting lug is fixed to the front side of the walkway panel and has a second locking hole and an unlocking hole along the length of the base platform; when the walkway panel is in the unfolded state, the second locking hole is opposite to the first locking hole, and the same locking pin can be passed through it.

[0013] This utility model also provides the following technical solutions: A folding frame box includes a base platform and end frames rotatably connected to both ends of the base platform, the end frames rotating in the space below the base platform; at least one end of the base platform is provided with the passageway panel.

[0014] Compared with the prior art, the beneficial effects of this utility model are as follows: 1. This utility model provides a flip-up walkway at the end of the inverted folding frame box, which allows workers to walk and work on the base platform without occupying the cargo space of the base platform.

[0015] 2. This utility model adds a support pad and a support block to the end of the box body, which not only works with the triangular brace to support the passageway panel, but also allows for the detection of the flatness of the passageway panel, greatly improving safety.

[0016] 3. This utility model adds a locking component between the aisle panel and the base platform to ensure that the aisle panel will not easily flip upwards. Attached Figure Description

[0017] Figure 1 This is a schematic diagram of the actual application of a conventional folding frame box; Figure 2 This is a schematic diagram of the unfolded state of the folding frame box of this utility model; Figure 3 This is a schematic diagram of the folded state of the folding frame box of this utility model; Figure 4 This is a schematic diagram illustrating the actual application of the folding frame box of this utility model; Figures 5 to 9 All Figure 2 Enlarged diagram of the corresponding part: Figure 5 This is a schematic diagram of the hinge device and surrounding structure in the folding frame box of this utility model; Figure 6 This is a schematic diagram of the corner post lock and surrounding structure in the folding frame box of this utility model; Figure 7 This is a schematic diagram of the automatic corner lock and surrounding structure in the folding frame box of this utility model; Figure 8 This is a schematic diagram of the middle frame and surrounding structure of the folding frame box of this utility model; Figure 9 This is a schematic diagram of the square pin assembly and surrounding structure of the folding frame box of this utility model; Figure 10 This is a structural schematic diagram of the caster assembly in the folding frame box of this utility model; Figure 11 This is a schematic diagram of the structure of the caster assembly in the folding frame box of this utility model after the torsion lock rotates; Figure 12 This is a structural diagram of the caster assembly in the folding frame box of this utility model when it is installed to the bottom corner piece; Figure 13 This is a schematic diagram of the structure of the folding frame box of this utility model, in which the caster assembly is stored on the opposite side of the corner posts; Figure 14 This is a schematic diagram of the structure near the end beam and passageway panel at the other end of the folding frame box of this utility model; Figure 15 This is a schematic diagram of the connection structure between the walkway slab and the base platform of this utility model; Figure 16 This is a structural schematic diagram of the walkway panel of this utility model (showing the back). Detailed Implementation

[0018] This utility model discloses a flip-up aisle panel and a folding frame box having the same. The flip-up aisle panel is the first subject matter to be protected by this utility model, and the folding frame box having the same is a scenario in which this subject matter is applied. The following is a detailed description of the specific embodiments of the folding frame box, wherein the aisle panel 8 is the first subject matter to be protected by this utility model.

[0019] See Figure 2 and Figure 3 The folding frame box embodiment of this utility model includes a base platform 1 and two sets of end frames 2. The two sets of end frames 2 are rotatably connected to two opposite ends of the base platform 1 via hinge devices 3. The hinge axis is along the width direction of the base platform 1, and the two sets of end frames 2 rotate relative to each other. The base platform 1 includes end beams 11, corner brackets 12, side beams 13, a bottom support assembly, and multiple steel floor panels 14. The end beams 11, side beams 13, and bottom support assembly form the frame of the base platform 1. The end beams 11 are located at the two ends of the bottom support assembly, the side beams 13 are located on the two sides of the bottom support assembly, and the steel floor panels 14 are laid on top of the bottom support assembly. The end beams 11 and side beams 13 are perpendicular to each other. The corner brackets 12 are fixed at the connection between the end beams 11 and side beams 13, and the upper surface of the corner brackets 12 is higher than the upper surfaces of the end beams 11, side beams 13, and steel floor panels 14.

[0020] End frame 2 includes two parallel corner posts 21, which are connected to the base platform 1 via hinge devices 3. (See attached image) Figure 5 The hinge device 3 is located below the corner piece 12 and includes an outer hinge, an inner hinge 32 and a rotating shaft. Both the outer hinge and the inner hinge 32 are parallel to the side beam 13. The outer hinge is fixed to the base platform 1 and is located below the corner piece 12. The inner hinge 32 is embedded in the end of the corner post 21 and fixed to the corner post 21. The outer hinge and the inner hinge 32 are connected by a rotating shaft, which is parallel to the width direction of the base platform 1.

[0021] The hinge device 3 also includes a back plate 34, which is fixed to the side of the outer hinge facing outwards. A corner plate 35 and a stacking block 36 are also fixed below the outer hinge. The corner plate 35 is perpendicular to the outer hinge, and the stacking block 36 is fixed to the lower surface of the corner plate 35 and located at the edge of the corner plate 35 along the length of the box. During the rotation of the corner post 21, when the corner post 21 rotates to be parallel to the base platform 1, the stacking block 36 limits the corner post 21 and the inner hinge 32.

[0022] Through the hinge device 3, this application achieves a horizontal height of end frame 2 lower than that of base platform 1, and the end frames 2 at both ends can rotate relative to each other in the space below base platform 1. Of the two ends of end frame 2, the end furthest from hinge device 3 is the free end. During rotation, end frame 2 has two extreme states: a folded state and an unfolded state. In the folded state, end frame 2 is parallel to base platform 1, and multiple folded frame boxes can be stacked and stored. In the unfolded state, end frame 2 is perpendicular to base platform 1, its free end contacts the ground, and supports base platform 1, using the ground as a first-level cargo platform and base platform 1 as a second-level cargo platform. (See reference...) Figure 4 .

[0023] The frame of the base platform 1 is also equipped with a forklift slot assembly 15, which facilitates the lifting of the base platform 1 or the handling of the entire folding frame container after insertion by a forklift. Therefore, in order to facilitate the handling of folding containers and the stacking and storage of multiple folding frame containers, this embodiment of the utility model also includes a corner lock 4 for locking the end frame 2 in the folded state. For the specific structure of the corner lock 4, please refer to [reference needed]. Figure 6 : Combination Figure 2 and Figure 3 The corner lock 4 is located on the side of the side beam 13 facing outwards from the box. The corner lock 4 includes a lock pin 41, a lock support plate 42, a lock transmission rod 43, a lock spring 44, and a lock handle 45. The lock support plate 42 has a U-shaped cross-section and is fixed upside down at the angle between the web and the lower wing of the side beam 13. The lock transmission rod 43 passes through the two opposite side walls of the lock support plate 42. The lock handle 45 and the lock pin 41 are respectively located at both ends of the lock transmission rod 43. Both the lock transmission rod 43 and the lock pin 41 are along the length of the base platform 1. The lock spring 44 is located inside the U-shaped space of the lock support plate 42 and is sleeved on the lock transmission rod 43. The position of the lock pin 41 can be adjusted laterally by operating the lock handle 45.

[0024] Two guide plates 131, arranged side-by-side along the length of the base platform 1, are also fixed on the side beam 13. Each guide plate 131 has a pin through-hole for the head lock pin 41 to pass through. The guide plates 131 provide support and guidance for the head lock pin 41 during lateral movement. (See reference...) Figure 7 The corner post 21 is provided with a corresponding latch sleeve 211, which is close to the free end of the corner post 21. When the corner post 21 is in the folded state, the head lock pin 41 can be inserted into the latch sleeve 211 to fix the end frame 2 and the base platform 1.

[0025] The above structure uses a headlock spring 44 to form a headlock pin 41 that can move laterally. However, it is only controlled by the headlock spring 44 and lacks stability. Therefore, to enhance the stability of the headlock pin 41, two slots 411 distributed along its length are provided on the upper side of the headlock pin 41. A retaining plate 132 is also provided on the side of the side beam 13 facing outward. The retaining plate 132 is hinged to the retaining plate seat 133, which is fixed to the side beam 13. The horizontal height of the retaining plate seat 133 is higher than the horizontal height of the headlock pin 41, allowing the other end of the retaining plate 132 to fall freely into the two slots 411 of the headlock pin 41. When the retaining plate 132 falls into different slots 411, it determines whether the end of the headlock pin 41 can be inserted into the pin sleeve 211.

[0026] Through the corner post lock 4, the side of the corner post 21 near the free end can be detachably connected to the base platform 1, so that the end frame 2 can be relatively fixed to the base platform 1 in the folded state, and can also be separated from the base platform 1 and freely rotate to the unfolded state under the action of gravity.

[0027] Since the rotation of end frame 2 is caused by gravity, to prevent the base platform 1 from being unable to be immediately locked with square pins after end frame 2 rotates to the unfolded state, thus avoiding potential safety hazards, this embodiment of the utility model provides an automatic corner lock 5 between the outer hinge and the corner post 21. This lock automatically locks the corner post 21 when end frame 2 rotates from the folded state to the unfolded state. For details, please refer to 8. Combination Figure 2 The outer hinge includes two parallel outer hinge plates 31, with an inner hinge 32 between them. An extension plate 33 is also provided below the outer hinge plate 31 on the outer side. The corner post automatic lock 5 includes an automatic locking groove 52 and an automatic locking pin 51. The automatic locking groove 52 is opened in the extension plate 33 and faces vertically downward. The automatic locking pin 51 is elastically disposed on the corner post 21 and located at the end of the corner post 21 that is fixed to the inner hinge 32. Its elastic movement direction is along the length direction of the corner post 21.

[0028] The corner post automatic lock 5 also includes a mounting plate 53 and a reset drive shaft 54. A mounting groove is provided on the side of the corner post 21 facing outwards, extending along the length of the corner post 21, and the end of the mounting groove facing the outer hinge has an opening. The mounting plate 53 is elongated and fixed to the corner post 21 in a way that fits the mounting groove. The mounting plate 53 has a U-shaped cross-section and a slope at the end away from the outer hinge, which slopes from the inside to the outside of the corner post 21 towards the end of the mounting plate 53.

[0029] The inner side of the mounting plate 53 is provided with a fixed plate 531 and a movable plate 532 that are parallel to each other. The fixed plate 531 is fixed to the corner post 21. The reset drive shaft 54 ​​passes through the fixed plate 531 and the movable plate 532, and an automatic locking pin 51 is fixed at the end near the outer hinge. The movable plate 532 is fixed to the reset drive shaft 54, and the movable plate 532 is closer to the automatic locking pin 51 than the fixed plate 531. A reset spring 55 is provided between the fixed plate 531 and the movable plate 532. The reset spring 55 is sleeved on the reset drive shaft 54, and its two ends are respectively abutted against the movable plate 532 and the fixed plate 531 by pads.

[0030] With the corner post automatic lock 5, during the rotation of the end frame 2 from the folded state to the unfolded state, the automatic locking pin 51 is squeezed and retracted by the extension plate 33. Once the end frame 2 rotates to the vertical base platform 1, the automatic locking pin 51 springs back into the automatic locking groove 52, thereby achieving timely locking.

[0031] To facilitate the reset of the corner post automatic lock 5, a steel wire rope 56 is threaded through the end of the reset drive shaft 54 ​​away from the outer hinge, and a fixing hook 533 is also provided on the inner side of the mounting plate 53. When the end frame 2 is locked in the unfolded state by the corner post automatic lock 5, the operator can stand on the ground and use a lever or similar tool to pull the steel wire rope 56 to the fixing hook 533. The steel wire rope 56 drives the automatic locking pin 51 to move down, causing the automatic locking pin 51 to disengage from the automatic locking groove 52. The fixing hook 533 allows the operator to keep pulling the steel wire rope 56, and also ensures that the end frame 2 is not affected by the corner post automatic lock 5 when it is being stored.

[0032] After the folding frame box of this utility model is unfolded, the end frame 2 provides support for the base platform 1. To ensure the stability of the end frame 2, this embodiment still follows the design of the conventional folding frame box - the end beam 11 of the base platform 1 is provided with a square pin 61, each set of hinge devices 3 corresponds to a square pin 61, and the inner hinge 32 and the outer hinge are provided with corresponding square pin holes. When the end frame 2 is in the unfolded state, the square pin 61 can be manually inserted into the square pin hole to fix the corner post 21.

[0033] In this invention, the base platform 1 is positioned at a height accessible to workers not on the ground. Therefore, this invention provides a square pin assembly 6 that differs from those used in conventional folding frame boxes. This square pin assembly 6 improves the method of operating the square pin 61. The square pin assembly 6 in this invention includes a square pin 61, a square pin drive shaft 62, a connecting rod 63, a lead screw 64, a lead screw nut 65, and a rotating hook 66. See details [link to documentation]. Figure 9 The two square pins 61 located at the same end of the base platform 1 are both connected to the same lead screw 64 through the connecting rod 63 and the lead screw nut 65: A lead screw 64 is positioned along the height of the base platform 1 at the center of the end beam 11. Both ends of the lead screw 64 are connected to bearings on the end beam 11, thus axially fixing the lead screw 64 to the end beam 11. Each square pin 61 has a square pin drive shaft 62 fixed to its end; that is, two square pin drive shafts 62 are located on the left and right sides of the lead screw 64, respectively. The square pin drive shafts 62 are positioned along the width of the base platform 1 and radially fixed to the end beam 11.

[0034] Two square pin rotating shafts 62 are each connected to the same lead screw nut 65 via a connecting rod 63. The lead screw nut 65 is threadedly connected to the lead screw 64, and the connecting rod 63 is inclined to the lead screw 64, with its two ends hinged to the lead screw nut 65 and the corresponding square pin drive shaft 62, respectively. A rotating hook 66 is fixed at the bottom of the lead screw 64, which is used to drive the lead screw 64 to rotate under the action of external force. The connecting rod 63 links the movement of the square pin 61 with the rotation of the lead screw 64. When the lead screw 64 rotates, the threaded structure drives the lead screw nut 65 to move up and down, which in turn drives that end of the connecting rod 63 to move up and down, and the other end to move left and right. The power for the left and right movement is transmitted to the square pin 61 by the square pin drive shaft 62, thereby controlling the square pin 61 to insert into or disengage from the square pin hole.

[0035] To enhance the structural stability between the square pin assembly 6 and the end beam 11, three end longitudinal beams 112 can be added at the connection between the end beam 11 and the lead screw 64 or the square pin drive shaft 62 as support seats for the fixed structure. A bearing seat connected to the lead screw 64 bearing is fixed on the middle end longitudinal beam 112, and sleeves 115 that slide with the square pin drive shaft 62 are fixed on the end longitudinal beams on both sides. The sleeves 115 guide and support the square pin drive shaft 62, effectively preventing deformation of the long square pin drive shaft 62.

[0036] This invention, by adding a lead screw 64 and a rotating hook 66 below it, converts the lateral movement of the square pin 61 into the rotation of the lead screw 64 around its axis. This allows workers on the ground to easily and conveniently operate the two square pins 61 by rotating the rotating hook 66 using a lever or similar tool. Simultaneously, the mating structure of the lead screw 64 and the lead screw nut 65 has a self-locking function, effectively preventing the square pins 61 from dislodging due to accidental impacts or bumps during use. Furthermore, in this embodiment, the two square pins 61 are connected to the same lead screw 64, and the transmission structure of the lead screw 64 to the square pins 61 is symmetrically designed, saving half the operation time and enabling simultaneous operation of the two square pins 61 located at the same end of the housing, thereby improving the efficiency of locking the end frame 2. Thus, both the square pin assembly 6 and the corner post automatic lock 5 provide a locking function for the end frame 2; the corner post automatic lock 5 provides initial locking, and the square pin assembly 6 provides secondary locking. The combination of these two enhances the support stability of the end frame 2.

[0037] The free end of the corner post 21 is fixed with a bottom corner piece 24. During the folding or unfolding of the end frame 2, the friction between the bottom corner piece 24 and the ground must be overcome, which not only damages the paint but also makes folding difficult. Therefore, in order to facilitate the folding and unfolding of the end frame 2, a detachable caster 74 can also be provided at the free end of the corner post 21 in this embodiment of the utility model to avoid the bottom corner piece 24 from making hard contact with the ground during the rotation of the end frame 2. Caster assembly 7 mates with base bracket 24, see below. Figure 10 and Figure 11 The caster assembly 7 includes a twist lock 71, a caster 74, a twist lock support plate 72, and a twist lock operating lever 73. The twist lock support plate 72 is fixed above the bracket of the caster 74. The locking lever of the twist lock 71 is perpendicular to the twist lock support plate 72 and rotatably connected to the center of the twist lock support plate 72. The locking head of the twist lock 71 and the caster 74 are located on opposite sides of the twist lock support plate 72. A twist lock support seat 75 protrudes from the side of the twist lock support plate 72 facing the locking head of the twist lock 71, and the locking lever of the twist lock 71 is hidden within the twist lock support seat 75. A flat slot is formed in the horizontal center of the twist lock support plate 72. The twist lock operating lever 73 is located in the slot and extends beyond the edge of the twist lock support plate 72. The twist lock operating lever 73 is perpendicular to and fixed to the locking lever of the twist lock 71, serving as a tool for rotating the twist lock 71.

[0038] When installing the caster assembly 7, the locking head of the twist lock 71 is inserted into the corner bracket 24 through the corner bracket hole. Then, the twist lock support 75 is inserted into the corner bracket hole. Finally, rotating the twist lock operating lever 73 will rotate the twist lock 71 to lock the caster assembly 7 to the corner bracket 24. (See reference...) Figure 12 At this point, one side of the twist lock support plate 72 is in direct contact with the bracket, and the other side is in direct contact with the bottom corner piece 24. Furthermore, the horizontal contour of the twist lock support plate 72 is the same as the outer contour of the plate surface directly contacting the bottom corner piece 24. To facilitate the storage of the casters 74, placement plates 212 are provided on opposite sides of the two corner posts 21, combined with… Figure 7 and Figure 13 The placement plate 212 has a hole in the middle, the size of which is the same as the corner hole of the bottom corner piece 24, so that the torsion lock 71 can be rotated and locked to the placement plate 212, thereby storing the caster 74 that is not in use in the placement plate 212.

[0039] In this embodiment, the presence of casters 74 prevents the bottom corner pieces 24 of the end frame 2 from making hard contact with the ground, thus avoiding damage to the frame paint and impacting the structure. Based on the above structure, the operation of unfolding or folding the end frame 2 is as follows: When end frame 2 needs to be unfolded, first release the locking pin 41 to detach end frame 2 from the base platform 1. Then, operate the forklift to lift the base platform 1 and slowly raise it. The caster 74 contacts the ground and gradually unfolds outward due to gravity until end frame 2 is upright. At the same time, the automatic locking pin 51 automatically inserts into the automatic locking slot 52. Then, use a tool to insert the square pin 61 at the end of the box to fix end frame 2. Finally, the caster 74 can be removed from the bottom corner piece 24 and stored inside end frame 2. The entire folding frame box is fully unfolded and landed.

[0040] When end frame 2 needs to be folded, first use a tool to release the lock between square pin 61 and automatic locking pin 51. Then, operate the forklift to lift the base platform 1. Then, install casters 74 on the bottom corner pieces 24 of end frame 2. Apply a force towards the inside of the box to end frame 2 at both ends to make end frame 2 fold appropriately into the box. Finally, the forklift slowly lowers, and end frame 2 will gradually fold inward until it is completely folded. Lock end frame 2 and base platform 1 with head lock pin 41.

[0041] The corner post 21 in this embodiment of the utility model can also be a telescopic structure. The telescopic corner post 21 includes a fixed corner post 21 and a movable corner post 21. One end of the fixed corner post 21 is connected to the base platform 1 by fixing it to the inner hinge 32. The other end of the fixed corner post 21 is provided with a movable corner post 21. Multiple adjustment holes are opened on both the movable corner post 21 and the fixed corner post 21. The length of the movable corner post 21 extending out or retracting into the fixed corner post 21 can be adjusted by adjusting the pin.

[0042] The retractable corner post 21 allows the height of the base platform 1 to be adjusted according to the extension length of the movable corner post 21. To simplify the structure and avoid reducing the strength of the corner post 21, the pin sleeve 211 in the corner post head lock 4 and the corner post automatic lock 5 are all located on the fixed corner post 21, while the bottom corner piece 24 must be fixed to the movable corner post 21. Therefore, the adjustment of the movable corner post 21 can be carried out when the end frame 2 is in the folded state, without being limited by the corner post head lock 4; when folding the end frame 2, there is no need to consider retracting the movable corner post 21 before folding.

[0043] Two end frame beams 22 are fixed between the corner posts 21 at the same end of the housing, respectively near the hinge device 3 and the free end of the end frame 2. A pull ring 23 is fixed at the middle of the end frame beam 22 near the free end. (See reference...) Figure 7 This is used to pull the end frame 2 outward. During the lifting process of the box, if the operation is smooth, the end frame 2 can reach a fully unfolded state by relying on a certain inertia. However, if it cannot be fully opened, the staff can use a pull rod or similar tool at the end of the box to hook the pull ring 23 and pull the end frame 2 outward to ensure that the end frame 2 opens smoothly.

[0044] When several unfolded folding crates are lined up to load goods, workers often need to operate on the base platform 1. In order not to affect the loading space, in this embodiment, a flip-up aisle panel 8 is provided at one end of the base platform 1. (See reference...) Figure 2 , Figures 14 to 16 The back of the walkway panel 8 is equipped with a support component. Through the structural design of flipping and supporting, the walkway panel 8 also has a folded state and an unfolded state: in the folded state, the front of the walkway panel 8 faces down and is in contact with the base platform 1; in the unfolded state, the front of the walkway panel 8 faces up and is open for people to walk on.

[0045] The passageway slab 8 is connected to the upper side of the end beam 11 of the base platform 1 via a flip hinge, see reference. Figure 15 The flip hinge includes a hinge base 81 and a hinge plate 82. The hinge base 81 is fixed to the upper side of the end beam 11, and the hinge plate 82 is connected to the hinge base 81 by hinge pins, which are arranged along the width direction of the base platform 1. The passageway plate 8 is fixed to the hinge plate 82 and can be flipped 180 degrees by the flip hinge. In the folded state, the front of the passageway plate 8 is in contact with the steel floor 14 of the base platform 1. After being flipped 180 degrees, it is in the unfolded state.

[0046] The front of the passageway slab 8 is a smooth plane, while the back is equipped with a crossbeam 83 and a longitudinal beam 84. (See reference...) Figure 14 and Figure 16 The back crossbeams 83 are located at the two side edges of the passageway slab 8, and multiple back longitudinal beams 84 are provided, all perpendicular to the back crossbeams 83. To provide support for the passageway slab 8, an end crossbeam 111 needs to be welded to the upper end of the end beam 11 on which the passageway slab 8 is located. When the passageway slab 8 is in the unfolded state, the back crossbeam 83 near the hinged side of the passageway slab 8 falls exactly above the end crossbeam 111. The support assembly is a foldable triangular brace, with two sets, respectively near the two ends of the passageway slab 8 and located in the middle of two adjacent back longitudinal beams 84.

[0047] The triangular brace includes a horizontal brace 851, a vertical brace 852, and a diagonal brace 853. The horizontal brace 851 is parallel to the length of the base platform 1 and is fixed to the back of the passageway panel 8. The two ends of the vertical brace 852 are hinged to the ends of the horizontal brace 851 and the diagonal brace 853, respectively. The other end of the diagonal brace 853 has a pin hole. The horizontal brace 851 also has two sets of pin holes along its length. Pins can be used to fix the end of the diagonal brace 853 to different positions on the horizontal brace 851 to achieve both storage and support. When folded, the vertical brace 852 and the diagonal brace 853 form a flat angle, both fitting snugly against the horizontal brace 851. The entire triangular brace is concealed between the back longitudinal beams 84 of the passageway panel 8. (See reference...) Figure 16Relative to the passageway slab 8, the surface of the triangular brace is not higher than the surface of the back longitudinal beam 84. When supported, the vertical brace 852 and the diagonal brace 853 form an acute angle, and the vertical brace 852 and the horizontal brace 851 form a right angle, forming a right-angled triangle structure. (See reference...) Figure 14 .

[0048] To facilitate the support of the triangular brace, a support plate 113 and a support block 114 can also be installed on the end beam 11: the support plate 113 is fixed to the end longitudinal beam 112, which is located below the end transverse beam 111, and the support block 114 is fixed to the bottom end of the support plate 113. When the triangular brace is raised and the passageway 8 is unfolded 180 degrees, the back side of the vertical support 852 is attached to the end transverse beam 111 and the support plate 113, and is located exactly above the support block 114.

[0049] Since the unfolding and folding of the walkway panel 8 are both performed on the base platform 1, operators can only operate from above the box. When the walkway panel 8 is unfolded, the supporting structure underneath is not visible, making it very difficult to place the walkway panel 8 flat. Therefore, through the above structural design, the triangular brace and the surrounding beams not only support the walkway panel 8 but also serve as a check: under normal circumstances, after the walkway panel 8 is unfolded, the triangular brace is located just above the support block 114; when the walkway panel 8 is subjected to excessive force, the vertical brace 852 and the support block 114 provide auxiliary support. When the vertical brace 852 cannot be lowered, it indicates that there is a problem with the flatness of the walkway panel 8, and the flatness of the walkway panel 8 needs to be checked in advance.

[0050] To enhance the stability of the walkway slab 8, in addition to the support provided by the triangular braces, it needs to be locked when the walkway slab 8 is in its unfolded state. This is achieved by installing locking components between the front of the walkway slab 8 and the end beam 11, thus relatively fixing the walkway slab 8 to the base platform 1. There are two sets of locking components, each set including one fixing lug 86 and two bolting lugs 87. (See attached document.) Figure 15 The fixed bracket 86 and the bolted bracket 87 are parallel to each other and both perpendicular to the passageway 8. The fixed bracket 86 is fixed to the upper side of the end beam 11 and has a first locking hole 861; the bolted bracket 87 is fixed to the front side of the passageway 8 and has a second locking hole 871 and an unlocking hole 872 along the length of the base platform 1.

[0051] When the passageway panel 8 is in the unfolded state, the fixing lug 86 is located between the two bolt lugs 87, and the second locking hole 871 is opposite to the first locking hole 861, allowing the same locking pin 88 to pass through. (See reference) Figure 15 The black locking pin 88 secures the fixed bracket 86 and the bolting bracket 87, thus locking the unfolded passageway panel 8. When the passageway panel 8 needs to be folded, pull out the locking pin 88 and insert it into the unlocking hole 872 of the bolting bracket 87. (See reference...) Figure 15 The red locking pin 88 is in the center. At this time, the connection between the fixing lug 86 and the bolt lug 87 is disconnected, and the passageway panel 8 can be folded towards the base platform 1. In order for the passageway panel 8 to fit against the steel floor 14, the steel floor 14 has a square hole 141 on the side near the passageway panel 8 to accommodate the bolt lug 87 and the hinge plate 82.

[0052] Based on the above structure: When the aisle panel 8 needs to be unfolded, first unfold the triangular support on the back and fix it with pins; then flip the aisle panel 8 outwards. Through the cooperation of the back beam, triangular support, end crossbeam 111, and end longitudinal beam 112 of the aisle panel 8, the upper surface of the aisle panel 8 is in a horizontal position; finally, pull out the locking pin 88 located in the unlocking hole 872 and insert it into the first locking hole 861 and the second locking hole 871 to lock the aisle panel 8 and prevent the aisle panel 8 from jumping upwards. When the platform needs to be folded, simply reverse the steps. When the folding frame box needs to be transported empty, flip the aisle panel 8 towards the base platform 1. The aisle panel 8 is attached to the steel floor 14 and will not exceed the outer contour of the box, so as not to affect stacking and transportation.

[0053] In summary, this utility model aims to innovatively utilize a conventional folding frame box. By connecting the inverted base platform 1 and the end frame 2 in a conventional manner, the end frame 2 supports the base platform 1, making the base platform 1 a two-layer cargo platform. The ground below the base platform 1 serves as the first-layer cargo platform, capable of accommodating small items, while the area above the base platform 1 can be used to place large items. Based on the base platform 1 serving as a two-layer cargo platform, this utility model not only provides structures such as corner lock 4, corner automatic lock 5, and end screw 64 to cooperate in supporting the base platform 1 with the end frame 2, but also provides casters 74 and aisle plates 8 to improve the practicality of the folding frame box.

[0054] Finally, it should be noted that the above description is only a preferred embodiment of the present utility model and is not intended to limit the present utility model. Although the present utility model has been described in detail with reference to the foregoing embodiments, those skilled in the art can still modify the technical solutions described in the foregoing embodiments or make equivalent substitutions for some of the technical features. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present utility model should be included within the protection scope of the present utility model.

Claims

1. A flip-up aisle panel, characterized in that: The bottom frame platform is set on the folding frame box; the passageway panel is connected to the upper side of the end beam of the bottom frame platform through a flip hinge; the passageway panel has a folded state and an unfolded state: in the folded state, the front of the passageway panel is facing down and in contact with the bottom frame platform; In its unfolded state, the walkway panel faces upwards and is open for pedestrians, while a foldable triangular support is provided on the back.

2. The passageway slab according to claim 1, characterized in that: The flip hinge includes a hinge base and a hinge plate. The hinge base is fixed to the upper side of the end beam. The hinge plate is connected to the hinge base by a hinge pin, which is arranged along the width direction of the base platform. The passageway plate is fixed to the hinge plate and can be flipped 180 degrees by the flip hinge.

3. The passageway slab according to claim 1, characterized in that: The triangular brace includes a horizontal brace, a vertical brace, and an oblique brace. The horizontal brace is parallel to the length of the base platform and is fixed to the back of the passageway panel. The two ends of the vertical brace are hinged to the ends of the horizontal brace and the oblique brace, respectively. The other end of the oblique brace is provided with a pin hole. The horizontal brace also has two sets of pin holes along its length. Pins can be used to fix the end of the oblique brace to different positions of the horizontal brace to achieve storage and support.

4. The passageway slab according to claim 3, characterized in that: An end crossbeam and an end longitudinal beam are fixed to the outside of the end beam body. The end crossbeam is located on the upper side of the end of the base frame platform, and the end longitudinal beam is perpendicular to the end crossbeam and located below it.

5. The passageway slab according to claim 4, characterized in that: A support pad is fixed on the end longitudinal beam, and a support block is fixed at the bottom end of the support pad. When the triangular brace is supported and the passageway panel is unfolded, the back side of the vertical support plate is attached to the end cross beam and the support pad, and is located exactly above the support block.

6. The passageway slab according to claim 4, characterized in that: The back of the passageway panel is fixed with a back crossbeam and a back longitudinal beam. The back crossbeam is located at both sides of the passageway panel, and there are multiple back longitudinal beams, all of which are perpendicular to the back crossbeam. When the passageway panel is unfolded, the back crossbeam near the flip hinge falls above the end crossbeam.

7. The passageway slab according to claim 6, characterized in that: The triangular brace is positioned between two adjacent longitudinal back beams, and its surface does not exceed the surface height of the longitudinal back beams when it is stowed.

8. The passageway slab according to claim 1, characterized in that: A locking assembly is provided between the front of the walkway panel and the end beam, which can relatively fix the walkway panel and the base platform when the walkway panel is in the unfolded state.

9. The passageway slab according to claim 8, characterized in that: The locking assembly includes a fixed lug and a bolting lug, which are parallel to each other and perpendicular to the walkway panel. The fixed lug is fixed to the upper side of the end beam and has a first locking hole. The bolting lug is fixed to the front side of the walkway panel and has a second locking hole and an unlocking hole along the length of the base platform. When the walkway panel is in the unfolded state, the second locking hole is opposite to the first locking hole, and the same locking pin can be passed through it.

10. A folding frame box, characterized in that: It includes a base platform and end frames rotatably connected to both ends of the base platform, the end frames rotating in the space below the base platform; at least one end of the base platform is provided with a walkway slab as described in any one of claims 1-9.

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