An adjustable logistics shelf

Abstract

The application relates to the technical field of logistics shipment, in particular to an adjustable logistics shelf which comprises two oppositely arranged mounting frames, the mounting frame is a U-shaped frame composed of two spaced and oppositely arranged angle steels and a square rod connecting the end portions of the two angle steels, a plurality of layers of placing platforms are horizontally arranged between the two mounting frames, the placing platform is composed of a plurality of mutually detachably connected placing plates, the side wall of the placing plate is provided with a connecting structure, two placing plates are detachably connected through the connecting structure, accommodating grooves are formed at both ends of the end face of the placing plate, a connecting plate is rotatably arranged in the accommodating groove, the end portion of the connecting plate is hinged to the end wall of the accommodating groove, a mounting hole is formed in the plate face of the connecting plate, the mounting hole is communicated with the two plate faces of the connecting plate, a plurality of connecting holes are spaced apart from each other on the two surfaces of the angle steel of the mounting frame which are perpendicular to each other, the connecting plate is detachably connected with the mounting frame through the mounting hole and the connecting hole by using bolts and nuts, and the space utilization rate of the logistics center is improved.

Description

Technical Field

[0001] This application relates to the field of logistics and shipping technology, and in particular to an adjustable logistics rack. Background Technology

[0002] Currently, logistics shelves are used in logistics turnover centers to store logistics items.

[0003] The existing shelving consists of two opposing portal frames and multi-tiered storage panels positioned between the two frames, which are detachably connected to the frames by bolts and nuts.

[0004] The existing technical solutions mentioned above have the following drawbacks: the items circulating in the logistics center have different sizes, and fixed-area placement boards may have problems such as small boards not being able to hold large items due to insufficient load capacity, or large boards wasting space by placing small items. Utility Model Content

[0005] This application provides an adjustable logistics rack to improve the space utilization of logistics centers.

[0006] The above-mentioned technical objective of this application is achieved through the following technical solution:

[0007] An adjustable logistics rack includes two opposing mounting frames. Each mounting frame is a U-shaped frame composed of two spaced and opposite angle steels and a square rod connecting the ends of the two angle steels. A multi-level placement platform is horizontally arranged between the two mounting frames. Each placement platform consists of multiple detachably connected placement plates. The side walls of each placement plate are provided with a connecting structure, through which the two placement plates are detachably connected. Both ends of the end face of each placement plate have receiving grooves, within which a connecting plate is rotatably mounted. The end of the connecting plate is hinged to the end wall of the receiving groove. The surface of the connecting plate has mounting holes that connect the two surfaces of the connecting plate. The two perpendicular surfaces of the angle steels of the mounting frame are each provided with multiple connecting holes spaced apart. The connecting plate is detachably connected to the mounting frame via the mounting holes and connecting holes using bolts and nuts.

[0008] By adopting the above technical solution, and by setting up an installation frame and placement plates, multiple placement plates can be detachably connected to form a placement platform. The two ends of the placement plates accommodate connecting plates that are rotatably set in slots. The connecting plates are detachably connected to the angle steel surface of the installation frame through mounting holes using bolts and nuts. This allows the placement platform to be adjusted and installed between two installation frames. The area of ​​the placement platform can be adjusted by increasing or decreasing the number of placement plates, and the height of the placement platform can be adjusted by using different positions of the connecting holes, thereby adapting to the placement needs of logistics items of different volumes and improving the space utilization rate of the logistics transfer center.

[0009] Optionally, the connection structure includes a fixed base, a plug-in base, and a locking cylinder. The fixed base and the plug-in base are both L-shaped boxes. An arc-shaped mounting groove is machined on one side of the inner corner of the fixed base and the plug-in base. The locking cylinder is a semi-cylinder that is adapted to the arc-shaped mounting groove and is rotatably disposed in the arc-shaped mounting groove. The fixed bases and plug-in bases of two adjacent placement plates can be plugged into each other.

[0010] By adopting the above technical solution, and by setting a connection structure consisting of a fixed seat, a plug-in seat, and a locking cylinder, the fixed seats and plug-in seats of two adjacent placement plates can be plugged into each other to achieve a detachable connection between the placement plates. When the locking cylinder rotates, it can lock and fix the fixed seat and the plug-in seat, so that multiple placement plates can be stably combined into a placement platform. At the same time, it is convenient to disassemble or reassemble the placement plates as needed, and flexibly adjust the area of ​​the placement platform.

[0011] Optionally, the opposite sidewalls of the placement plate are respectively provided with a first mounting groove and a second mounting groove. The fixing seat is adapted to the first mounting groove and is located in the first mounting groove as a whole. The plug-in seat is composed of a first plug-in box and a second plug-in box. The second mounting groove is adapted to the second plug-in box. The second plug-in box is located in the second mounting groove, and the first plug-in box is located outside the placement plate.

[0012] By adopting the above technical solution, by opening a first mounting groove and a second mounting groove on the opposite side wall of the placement plate, the fixing seat is fully adapted to be located in the first mounting groove, the second plug box of the plug-in seat is adapted to be located in the second mounting groove, and the first plug box is located outside the placement plate. The fixing seat and the plug-in seat are embedded in the side wall of the placement plate, avoiding the connection structure from protruding from the surface of the placement plate and affecting the placement of items. At the same time, it ensures that the fixing seat and the plug-in seat are accurately positioned when connected, thereby improving the stability of the placement plate connection.

[0013] Optionally, the locking cylinder end face is provided with an arc-shaped hole, and an arc-shaped sliding block is fixedly connected to the side wall of the arc-shaped mounting groove. The arc-shaped sliding block is adapted to the arc-shaped hole and is slidably disposed in the arc-shaped hole.

[0014] By adopting the above technical solution and setting an arc-shaped sliding block that fits and slides within an arc-shaped hole, the rotation trajectory of the locking cylinder can be restricted by the cooperation between the arc-shaped sliding block and the arc-shaped hole when the locking cylinder rotates, so that the locking cylinder rotates smoothly. This ensures smooth operation when the fixed seat and the plug seat are connected or unlocked, and avoids deviation during the rotation of the locking cylinder.

[0015] Optionally, the arc-shaped mounting groove has a flared limiting hole on its wall. The connection structure also includes an unlocking plate and a spring. The unlocking plate passes through the limiting hole and is fixed to the peripheral wall of the locking cylinder. The spring is disposed in the fixed seat, with one end of the spring fixed to the inner wall of the fixed seat or the plug seat and the other end fixed to the surface of the unlocking plate.

[0016] By adopting the above technical solution, and by setting an unlocking plate and a spring, when the locking cylinder clamps the fixing seat and the plug seat, the spring is in a compressed state to provide elastic force to maintain the locking state, making the connection between multiple placement plates more stable. When unlocking is required, the unlocking plate is operated to drive the locking cylinder to rotate, making the unlocking operation of the connection structure faster and more convenient.

[0017] Optionally, the placement plate has an unlocking hole that connects to the receiving cavity, and the connection structure also includes an unlocking post. The end of the unlocking post passes through the unlocking hole and is fixedly connected to the end face of the unlocking plate. The unlocking post protrudes from the end face of the unlocking plate and away from the surface of the placement plate.

[0018] By adopting the above technical solution and setting the unlocking post, the unlocking plate can be directly driven to move by pressing or flicking the protruding unlocking post, thereby driving the locking cylinder to rotate, realizing the quick unlocking of the connection structure without the need for additional tools, which makes it convenient for operators to disassemble and adjust the placement plate.

[0019] Optionally, the connecting plate has a sliding hole on its end face away from the hinge point with the receiving groove, and a fixed post is slidably disposed in the sliding hole. The receiving groove has an insertion hole on its end wall away from the hinge point with the connecting plate that is adapted to the end of the fixed post. The end of the fixed post can be inserted into the insertion hole. A spring is disposed between the fixed post and the bottom of the sliding hole. One end of the spring is fixedly connected to the bottom of the sliding hole, and the other end is fixedly connected to the end face of the fixed post.

[0020] By adopting the above technical solution, and by setting a fixing column and a spring, when the connecting plate is stored in the receiving groove, the fixing column can be inserted into the insertion hole under the action of the spring force, and the connecting plate can be fixed in the receiving groove. This prevents the connecting plate from accidentally rotating out of the receiving groove during the movement of the placement plate or during use, and ensures the stability of the placement plate structure.

[0021] Optionally, the connecting plate has a connecting hole that communicates with the sliding hole. The connecting hole is spaced apart from the end face of the connecting plate. An operating rod is fixedly connected to the peripheral wall of the fixed column. The end of the operating rod passes through the connecting hole and is fixedly connected to the peripheral wall of the fixed column. The end of the operating rod away from the fixed column protrudes from the surface of the connecting plate.

[0022] By adopting the above technical solution and setting an operating lever, the fixed column can be moved by manually moving the protruding operating lever to slide within the sliding hole, easily realizing the operation of inserting or disengaging the fixed column from the insertion hole. This makes the switching of the connecting plate when storing and fixing or unfolding for use more convenient and quick, improving operational efficiency.

[0023] In summary, this application has the following technical effects:

[0024] 1. By setting up an installation frame and placement plates, multiple placement plates can be detachably connected to form a placement platform. The two ends of the placement plates accommodate connecting plates that are rotatably set in the slots. The connecting plates are detachably connected to the angle steel surface of the installation frame through the mounting holes and the connecting holes spaced apart by bolts and nuts. This allows the placement platform to be installed in an adjustable manner between two installation frames. The area of ​​the placement platform can be adjusted by increasing or decreasing the number of placement plates, and the height of the placement platform can be adjusted by using different positions of the connecting holes, thereby adapting to the placement needs of logistics items of different volumes and improving the space utilization rate of the logistics transfer center.

[0025] 2. By setting a fixed seat, a plug-in seat, and a locking cylinder, the fixed seats and plug-in seats of two adjacent placement plates can be plugged into each other to achieve a detachable connection between the placement plates. When the locking cylinder rotates, it can lock the fixed seat and plug-in seat in place, so that multiple placement plates can be stably combined into a placement platform. At the same time, it is easy to disassemble or reassemble the placement plates as needed, and flexibly adjust the size of the placement platform.

[0026] 3. By setting the unlocking post, the unlocking plate can be directly driven to move by pressing or flicking the protruding unlocking post, thereby driving the locking cylinder to rotate, realizing the quick unlocking of the connection structure without the need for additional tools, which makes it convenient for operators to disassemble and adjust the placement plate. Attached Figure Description

[0027] Figure 1 This is a structural diagram of the object of this application;

[0028] Figure 2 This is a structural diagram of the connecting plate of this application;

[0029] Figure 3 This is a structural diagram of the connection structure in this application.

[0030] Explanation of reference numerals in the attached drawings: 1. Shelf assembly; 11. Mounting frame; 111. Connecting hole; 12. Placement plate; 121. Receiving slot; 1211. Insertion hole; 122. First mounting slot; 123. Second mounting slot; 124. Receiving cavity; 13. Connecting plate; 131. Sliding hole; 132. Communicating hole; 133. Mounting hole; 14. Fixing post; 141. Operating lever; 2. Connecting structure; 21. Fixing base; 211. First fixing box; 212. Second fixing box; 22. Insertion base; 221. First insertion box; 222. Second insertion box; 23. Arc-shaped mounting slot; 24. Locking cylinder; 25. Arc-shaped hole; 26. Arc-shaped sliding block; 27. Limiting hole; 28. Unlocking plate; 29. ​​Unlocking post. Detailed Implementation

[0031] The present application will be further described in detail below with reference to the accompanying drawings.

[0032] This application discloses an adjustable logistics shelf, as shown in the embodiments below. Figure 1The logistics rack includes a rack component 1 and a connecting structure 2. The rack component 1 can adjust the area of ​​the logistics item placement platform to accommodate logistics items of different sizes and improve the space utilization of the turnover center. The connecting structure 2 is used to form the placement unit of the placement platform.

[0033] Reference Figure 1 The shelving assembly 1 includes two oppositely arranged mounting frames 11. Each mounting frame 11 consists of two vertically spaced angle steels and a square rod connecting the upper ends of the two angle steels. The two angle steels of the mounting frame 11 are arranged opposite each other, and the mounting frame 11 is U-shaped with the U-shaped opening facing vertically downward.

[0034] Combination Figure 1 and Figure 2 A multi-layer placement platform is provided between the two mounting frames 11. The placement platform consists of at least three placement units, each of which is a detachable placement plate 12 made of metal. Both ends of the placement plate 12 have strip-shaped receiving grooves 121, the length of which is parallel to the length of the end face of the placement plate 12. A connecting plate 13 is rotatably mounted within the receiving groove 121. The connecting plate 13 is adapted to the receiving groove 121 and can be housed within it. One end of the connecting plate 13 is hinged to the end wall of the receiving groove 121. The connecting plate 13 is used to mount the placement plate 12 onto the mounting frame 11.

[0035] Combination Figure 1 and Figure 2 A circular sliding hole 131 is provided on the end face of the connecting plate 13 away from the hinge point with the receiving groove 121. The long and short directions of the sliding hole 131 are parallel to the length direction of the connecting plate 13. A fixing post 14 is slidably disposed in the sliding hole 131. The fixing post 14 is a cylinder. An insertion hole 1211 adapted to the end of the fixing post 14 is provided on the end wall of the receiving groove 121 away from the hinge point with the connecting plate 13. The end of the fixing post 14 can be inserted into the insertion hole 1211. The fixing post 14 and the insertion hole 1211 can fix the connecting plate 13 in the receiving groove 121.

[0036] Combination Figure 1 and Figure 2A spring is installed at the bottom of the sliding hole 131. One end of the spring is fixed to the bottom of the sliding hole 131, and the other end is fixed to the end face of the fixed column 14. A strip-shaped connecting hole 132 is opened on the plate surface of the connecting plate 13 away from the bottom of the receiving groove 121, which connects to the sliding hole 131. The length direction of the connecting hole 132 is parallel to the length direction of the sliding hole 131, and the connecting hole 132 is spaced apart from the end face of the connecting plate 13. An operating rod 141 is fixed to the periphery of the fixed column 14. The end of the operating rod 141 passes through the connecting hole 132 and is fixed to the periphery of the fixed column 14. The operating rod 141 is close to the bottom of the sliding hole 131, and the end of the operating rod 141 away from the fixed column 14 protrudes from the plate surface of the connecting plate 13. The length direction of the operating rod 141 is perpendicular to the plate surface of the connecting plate 13. The operating rod 141 facilitates the operation of the fixed column 14 to fix the connecting plate 13.

[0037] Combination Figure 1 and Figure 2 The connecting plate 13 has mounting holes 133 on its surface. The mounting holes 133 are circular and connect the two surfaces of the connecting plate 13. The axis of the mounting holes 133 is perpendicular to the surface of the connecting plate 13. The mounting holes 133 are countersunk holes. The mounting holes 133, sliding holes 131, and connecting holes 132 are all spaced apart. The perpendicular surfaces of the angle steel of the mounting frame 11 have multiple connecting holes 111 along the length of the angle steel. The length of the connecting holes 111 is parallel to the length of the angle steel. The connecting holes 111 are oblong and evenly spaced. The connecting plate 13 is detachably connected to the mounting frame 11 by bolts and nuts. By using the connecting holes 111 at different heights, the distance between two adjacent placement platforms can be adjusted to accommodate logistics items of different volumes.

[0038] Combination Figure 1 and Figure 3The connecting structure 2 includes a fixed base 21, a plug-in base 22, a locking cylinder 24, an unlocking plate 28, a spring, and an arc-shaped sliding block 26. The fixed base 21 is composed of a first fixed box 211 and a second fixed box 212. The thickness of the first fixed box 211 is half the thickness of the second fixed box 212. The end face of the first fixed box 211 is fixed to the surface of the second fixed box 212, so that the side wall of the plug-in base 22 is L-shaped. The first fixed box 211 and the second fixed box 212 are connected. The connector 22 is composed of a first connector box 221 and a second connector box 222. The thickness of the first connector box 221 is half the thickness of the second connector box 222. The end face of the first connector box 221 is fixed to the surface of the second connector box 222, making the side wall of the connector 22 L-shaped. The first connector box 221 and the second connector box 222 are connected. The end face of the first connector box 221 away from the second connector box 222 is processed into a curved protruding chamfer, and the curved opening faces the second connector box 222. The second connector box 222 is consistent with the second fixing box 212. The L-shaped fixing seat 21 and the connector 22 are arranged opposite to each other. The L-shaped inner wall of the fixing seat 21 can fit against the L-shaped inner wall of the connector 22.

[0039] Combination Figure 1 and Figure 3 Each of the two opposing side walls of the placement plate 12 has two first mounting slots 122 and two second mounting slots 123. The two first mounting slots 122 are spaced apart, and their length direction is perpendicular to or adjacent to the side wall. The first mounting slot 122 is integrally adapted to the fixing base 21, and the fixing base 21 can be placed in the first mounting slot 122. The end face of the first fixing box 211 opposite to the second fixing box 212 is flush with the side wall or end face of the placement plate 12. The two second mounting slots 123 are spaced apart, and their second mounting slots 123 are adapted to the second plug-in box 222, which can be placed in the second mounting slot 123. The two placement plates 12 can be inserted into the first mounting slot 122 of the side wall or end face of the other placement plate 12 through the plug-in base 22 on the side wall or end face of one placement plate 12, and connected to the fixing base 21 in the first mounting slot 122.

[0040] Combination Figure 1 and Figure 3 The L-shaped inner surfaces of the first fixed box 211 and the first plug-in box 221 are both recessed inward to form an arc-shaped mounting groove 23. The length direction of the arc-shaped mounting groove 23 is perpendicular to the length direction of the placement plate 12. The groove walls at both ends of the arc-shaped mounting groove 23 are the boxes of the first fixed box 211 or the first plug-in box 221.

[0041] Combination Figure 1 and Figure 3The locking cylinder 24 is a semi-cylinder, which is adapted to and rotatably disposed in the arc-shaped mounting groove 23. The center of the semi-circular end face of the locking cylinder 24 coincides with the center of the arc-shaped mounting groove 23. The peripheral wall of the locking cylinder 24 fits against the groove wall of the arc-shaped mounting groove 23. A semi-annular arc-shaped hole 25 is provided on the end face of the locking cylinder 24. The center of the arc-shaped hole 25 coincides with the center of the semi-circular tangential surface of the locking cylinder 24. The arc-shaped hole 25 connects the two end faces of the locking cylinder 24. The arc-shaped sliding block 26 is fixed in the arc-shaped mounting groove 23. The two ends of the arc-shaped sliding block 26 are respectively fixed to the two end walls of the arc-shaped mounting groove 23. The arc-shaped sliding block 26 is adapted to and slidably disposed in the arc-shaped hole 25.

[0042] Combination Figure 1 and Figure 3 The unlocking plate 28 is a strip-shaped plate. The side wall of the unlocking plate 28 is fixedly connected to the peripheral wall of the locking cylinder 24. The arc-shaped mounting groove 23 has a flared limiting hole 27 that passes through the plug-in seat 22 or the fixing seat 21. The unlocking plate 28 passes through the limiting hole 27 into the plug-in seat 22 or the fixing seat 21. When the two placement plates 12 are connected through the plug-in seat 22 and the fixing seat 21, the plug-in seat 22 on the side away from the fixing seat 21 and the fixing seat 21 on the side away from the plug-in seat 22 both have flared receiving cavities 124 that are adapted to the unlocking plate 28. The bottom of the receiving cavity 124 is arc-shaped. One side wall of the unlocking plate 28 is located outside the plug-in seat 22, and the unlocking plate 28 can rotate in the receiving cavity 124. The spring is set in the plug-in seat 22. One end of the spring is fixedly connected to the inner wall of the plug-in seat 22, and the other end is fixedly connected to the plate surface of the unlocking plate 28.

[0043] Combination Figure 1 and Figure 3 The placement plate 12 has an arc-shaped unlocking hole on its surface, which connects the lower surface of the placement plate 12 and the receiving cavity 124. The connecting structure 2 also includes an unlocking post 29, the end face of which passes through the unlocking hole and slides within the unlocking hole. The end face of the unlocking post 29 is fixed to the side of the unlocking plate 28 away from the locking cylinder 24. The axis of the unlocking post 29 is perpendicular to the end face of the unlocking plate 28, and the end face of the unlocking post 29 away from the unlocking plate 28 protrudes from the lower surface of the placement plate 12.

[0044] Combination Figure 1 and Figure 3The plug-in bases 22 and fixed bases 21 on the end faces or side walls of the two placement plates 12 are compatible with each other and can be inserted and combined. In the natural state, the rectangular plane of the locking cylinder 24 is tilted. As the fixed base 21 and the plug-in base 22 approach each other, the end of the first plug-in box 221 away from the second plug-in box 222 contacts the rectangular plane of the locking cylinder 24 in the fixed base 21, so that the rectangular plane of the locking cylinder 24 slowly becomes flush with the surface of the first fixed base 21 box. The spring extends. When the rectangular planes of the locking cylinder 24 of the fixed base 21 and the plug-in base 22 are in contact with each other, so that the locking cylinder 24 of the fixed base 21 and the plug-in base 22 forms a complete cylinder, the spring contracts, so that the locking cylinder 24 rotates and the rectangular plane tilts. The peripheral wall of the locking cylinder 24 of the plug-in base 22 locks the wall of the arc-shaped mounting groove 23 of the fixed base 21, fixing the position of the fixed base 21 and the plug-in base 22. When unlocking, the toggle pin rotates the locking cylinder 24 via the unlocking plate 28. The rectangular plane of the locking cylinder 24 is flush with the surface of the first fixed box 211, and the fixed seat 21 and the plug seat 22 move away from each other to unlock.

[0045] Combination Figures 1 to 3 Multiple placement plates 12 can be combined into a single placement platform through the connecting structure 2, and installed between the mounting frames 11 through the connecting plate 13. The multiple placement plates 12 can be detachably connected through the connecting structure 2, which can adjust the area of ​​the placement platform. When dealing with logistics items of different volumes, different volumes of logistics items can be placed by changing the area of ​​the placement platform and the distance between two adjacent placement platforms, thereby improving the space utilization rate of the transfer center.

[0046] This specific embodiment is merely an explanation of this application and is not intended to limit it. After reading this specification, those skilled in the art can make modifications to this embodiment without contributing any inventive step, but such modifications are protected by patent law as long as they fall within the scope of the claims of this application.

Claims

1. An adjustable logistics rack, characterized in that: The system includes two opposing mounting frames (11), each mounting frame (11) being a U-shaped frame composed of two spaced and opposing angle steels and a square rod connecting the ends of the two angle steels. A multi-layered placement platform is horizontally arranged between the two mounting frames (11). Each placement platform consists of multiple detachably connected placement plates (12). A connecting structure (2) is provided on the sidewall of each placement plate (12), allowing the two placement plates (12) to be detachably connected via the connecting structure (2). Receiving grooves (11) are provided at both ends of the end face of each placement plate (12). 21) A connecting plate (13) is rotatably disposed inside the receiving groove (121). The end of the connecting plate (13) is hinged to the end wall of the receiving groove (121). The surface of the connecting plate (13) is provided with a mounting hole (133). The mounting hole (133) connects the two surfaces of the connecting plate (13). The two perpendicular surfaces of the angle steel of the mounting frame (11) are provided with multiple connecting holes (111) at intervals. The connecting plate (13) is detachably connected to the mounting frame (11) through the mounting hole (133) and the connecting hole (111) using bolts and nuts.

2. The adjustable logistics rack according to claim 1, characterized in that: The connection structure (2) includes a fixed base (21), a plug-in base (22), and a locking cylinder (24). The fixed base (21) and the plug-in base (22) are both L-shaped boxes. An arc-shaped mounting groove (23) is formed on one side of the inner corner of the fixed base (21) and the plug-in base (22). The locking cylinder (24) is a semi-cylinder. The locking cylinder (24) is adapted to the arc-shaped mounting groove (23) and is rotatably set in the arc-shaped mounting groove (23). The fixed base (21) and the plug-in base (22) of two adjacent placement plates (12) can be plugged into each other.

3. The adjustable logistics shelf according to claim 2, characterized in that: The opposite sidewalls of the placement plate (12) are respectively provided with a first mounting groove (122) and a second mounting groove (123). The fixing seat (21) is adapted to the first mounting groove (122) and is located in the first mounting groove (122). The plug-in seat (22) is composed of a first plug-in box (221) and a second plug-in box (222). The second mounting groove (123) is adapted to the second plug-in box (222). The second plug-in box (222) is located in the second mounting groove (123). The first plug-in box (221) is located outside the placement plate (12).

4. An adjustable logistics rack according to claim 2, characterized in that: The locking cylinder (24) has an arc-shaped hole (25) on its end face, and an arc-shaped sliding block (26) is fixed to the side wall of the arc-shaped mounting groove (23). The arc-shaped sliding block (26) is adapted to the arc-shaped hole (25) and is slidably disposed in the arc-shaped hole (25).

5. An adjustable logistics rack according to claim 4, characterized in that: The arc-shaped mounting groove (23) has a flared limiting hole (27) on its groove wall. The connecting structure (2) also includes an unlocking plate (28) and a spring. The unlocking plate (28) passes through the limiting hole (27) and is fixed to the peripheral wall of the locking cylinder (24). The spring is set in the fixed seat (21). One end of the spring is fixed to the inner wall of the fixed seat (21) or the plug seat (22), and the other end is fixed to the surface of the unlocking plate (28).

6. An adjustable logistics rack according to claim 5, characterized in that: The placement plate (12) has an unlocking hole that connects to the receiving cavity (124). The connecting structure (2) also includes an unlocking post (29). The end of the unlocking post (29) passes through the unlocking hole and is fixedly connected to the end face of the unlocking plate (28). The end face of the unlocking post (29) protrudes from the surface of the placement plate (12).

7. An adjustable logistics rack according to claim 1, characterized in that: The connecting plate (13) has a sliding hole (131) on its end face away from the hinge point with the receiving groove (121). A fixed post (14) is slidably disposed in the sliding hole (131). The receiving groove (121) has an insertion hole (1211) on its end wall away from the hinge point with the connecting plate (13) that is adapted to the end of the fixed post (14). The end of the fixed post (14) can be inserted into the insertion hole (1211). A spring is provided between the fixed post (14) and the bottom of the sliding hole (131). One end of the spring is fixedly connected to the bottom of the sliding hole (131), and the other end is fixedly connected to the end face of the fixed post (14).

8. An adjustable logistics rack according to claim 7, characterized in that: The connecting plate (13) has a connecting hole (132) that communicates with the sliding hole (131). The connecting hole (132) is spaced apart from the end face of the connecting plate (13). An operating rod (141) is fixedly connected to the periphery of the fixed column (14). The end of the operating rod (141) passes through the connecting hole (132) and is fixedly connected to the periphery of the fixed column (14). The end of the operating rod (141) away from the fixed column (14) protrudes from the surface of the connecting plate (13).

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