A logistics box for logistics and freight

Abstract

The present invention is applicable to the technical field of logistics boxes, and provides a logistics box for logistics freight, including a logistics box body, wherein the logistics box body is composed of side supports, a top support, a bottom plate, a side fence, a bottom support and a fixed slide rail, a clamping portion is arranged on one side of the bottom support, and also includes: a clamping mechanism and a non-return mechanism, the clamping mechanism includes a driving shaft, a first pulley, a toothed belt, a second pulley, a mounting shaft and a clamping plate, the clamping plate cooperates with the clamping portion, the driving shaft is connected to the non-return mechanism, and the upper and lower logistics boxes can be connected as a whole through the clamping mechanism to realize vertical stacking of the logistics boxes, which can not only reduce the space occupied by the logistics boxes and reduce the transportation cost of the logistics boxes, but also shorten the loading and unloading time of the logistics boxes and improve the loading and unloading efficiency of the logistics boxes, and the non-return mechanism can limit the rotation direction of the driving shaft to ensure the connection stability between multiple vertically stacked logistics boxes and improve the transportation quality and transportation safety of the logistics boxes.

Description

Technical Field

[0001] The present invention belongs to the technical field of logistics boxes, and in particular relates to a logistics box for logistics and freight transportation. Background Art

[0002] Logistics boxes, also known as turnover boxes, are widely used in machinery, automobiles, home appliances, light industry, electronics and other industries. They are acid-resistant, alkali-resistant, oil-resistant, non-toxic and odorless. They can be used to hold food, etc. They are easy to clean, with convenient parts turnover, neat stacking and easy management. Today, as logistics management is increasingly valued by the majority of companies, logistics boxes help complete the universalization and integrated management of logistics containers, and are essential for production and distribution companies to carry out modern logistics management.

[0003] The existing logistics box for logistics freight includes a logistics box body, the bottom end of the logistics box body is fixedly connected to two fixed seats, the fixed seats are rotatably connected to pulleys inside, and an expansion component is arranged inside the logistics box body. The expansion component is arranged to expand the box body and the moving rod. The cooperation between the two helps to slide the expansion box body inside the logistics box body, so that the expansion box body and the space inside the logistics box body are combined with each other, thereby achieving the effect of increasing the internal volume and being able to hold more goods.

[0004] Although existing logistics boxes can accommodate more goods by increasing their internal volume, they can only be stacked flat during transportation. This method not only seriously wastes valuable transportation space and leads to increased transportation costs, but also prolongs loading and unloading time, further increasing overall operating costs.

[0005] Therefore, in view of the above situation, there is an urgent need to develop a logistics box for logistics and freight transportation to overcome the shortcomings in current practical applications. Summary of the invention

[0006] In view of the deficiencies in the prior art, an embodiment of the present invention aims to provide a logistics box for logistics and freight transportation to solve the problems in the above-mentioned background technology.

[0007] To achieve the above object, the present invention provides the following technical solutions: A logistics box for logistics and freight transport, comprising a logistics box body, the logistics box body is composed of side supports, a top support, a bottom plate, a side fence, a bottom support and a fixed slide rail, the upper and lower ends of the side supports are respectively fixedly connected to the top support and the bottom plate, the side fence is located between the top support and the bottom plate, the fixed slide rail is symmetrically fixed to the bottom of the bottom plate, the front and rear ends of the fixed slide rail are symmetrically and slidably installed with the bottom support, the bottom of the bottom support is provided with a supporting portion, the top of the bottom support is provided with an installation cavity, one side of the bottom support is provided with a clamping portion, and further comprises: A clamping mechanism, the clamping mechanism comprises a driving shaft, a first pulley, a toothed belt, a second pulley, a mounting shaft and a clamping plate, the driving shaft is rotatably mounted in the mounting cavity and is horizontally slidably connected with the bottom support, a first pulley is horizontally slidably mounted on the driving shaft, the mounting shaft is rotatably mounted on one side of the bottom support and is located above the clamping portion, a clamping plate and a second pulley are fixed on the mounting shaft in sequence, the clamping plate and the clamping portion intermittently cooperate and complete the clamping of the top support, and the two ends of the toothed belt are respectively meshed with the first pulley and the second pulley; The driving shaft drives the pulley 1 to rotate counterclockwise, the pulley 1 drives the pulley 2 to rotate counterclockwise through the toothed belt, the pulley 2 drives the installation shaft to rotate counterclockwise, the installation shaft drives the inclined clamping plate to rotate in the direction close to the clamping part, the clamping plate clamps and fixes the top support on the bottom logistics box body by closely cooperating with the clamping part and realizes the vertical stacking of the logistics boxes; The anti-return mechanism is installed in the installation cavity, one end of the anti-return mechanism is horizontally slidably connected with the driving shaft, and the anti-return mechanism realizes unidirectional counterclockwise rotation of the driving shaft by limiting the driving shaft.

[0008] As a further technical solution of the present invention, the anti-return mechanism includes: A ratchet wheel is fixed on the driving shaft, and the outer wall of the ratchet wheel is provided with grooves distributed circumferentially; A mounting block fixed in the mounting cavity; A check block rotatably mounted on the mounting block, one end of the check block being matched with a groove on the outer wall of the ratchet, and a second spring being fixed between the bottom of one end of the check block and the mounting block; A pressing portion fixed to the other end of the check block.

[0009] As a further technical solution of the present invention, a connecting cavity is provided on the other side of the bottom support, a side sealing plate is fixed on one side of the connecting cavity, the side sealing plates on the left and right bottom supports are close to each other, and a first adjustment component is provided between the left and right bottom supports, the two ends of the first adjustment component are respectively connected to the side sealing plates on the left and right bottom supports, and the first adjustment component is used to change the distance between the left and right bottom supports.

[0010] As a further technical solution of the present invention, the first adjustment component includes: A connecting seat 1 fixed to the outside of the side sealing plate; A screw rod 1 fixed on a connecting seat 1, wherein the threads of the left and right screw rods 1 are in opposite directions; A screw sleeve 1 is located between the left and right bottom supports, and the two ends of the screw sleeve 1 are respectively threadedly connected to the two left and right distributed screw rods 1; A connecting sleeve fixed to the outside of the screw sleeve; The paddles are circumferentially distributed on the outer wall of the connecting sleeve.

[0011] As a further technical solution of the present invention, a second adjustment component and an elastic limiting mechanism are respectively arranged between the front and rear bottom supports, the second adjustment component is fixedly connected to the outer wall of the connecting cavity, the second adjustment component is used to adjust the distance between the front and rear bottom supports, the two ends of the elastic limiting mechanism are respectively installed in the two connecting cavities, and the elastic limiting mechanism is used to control the direction and stroke of movement of the two bottom supports in the same fixed slide rail.

[0012] As a further technical solution of the present invention, the second adjustment component includes: A second connection seat fixed outside the connection cavity; A fixing rod fixed to one side of the second connecting seat; Rotate the connecting rod installed on one end of the fixed rod; A screw sleeve 2 is located between the front and rear bottom supports, and the outer wall of the screw sleeve 2 is rotatably connected to the front and rear connecting rods; A second screw rod is fixed to the middle of the fixed slide rail, wherein the second screw rod is threadedly connected to the second screw sleeve; A handle fixed on one end of the screw rod.

[0013] As a further technical solution of the present invention, the elastic limiting mechanism includes: The two ends of the limit rods extend to the connection cavities of the left and right bottom supports respectively, and the limit rods are horizontally slidably connected to the connection cavities; A spring 1 is sleeved on the outer wall of the limiting rod, wherein the spring 1 is located between the left and right bottom supports and the two ends of the spring are respectively connected to the outer walls of the left and right connecting cavities.

[0014] Compared with the prior art, the present invention has the following beneficial effects: The clamping mechanism located above the bottom logistics box body can clamp and fix the top support located on the bottom logistics box body, so that the upper and lower logistics boxes can be connected as a whole to achieve vertical stacking of logistics boxes. This can not only reduce the space occupied by the logistics boxes during transportation, but also effectively expand the originally limited transportation space. Compared with the traditional flat placement, the vertical stacking method can improve the transportation efficiency of the logistics boxes, reduce the transportation cost of the logistics boxes, and facilitate loading and unloading. The loading and unloading operations of multiple logistics boxes can be completed at one time, shortening the loading and unloading time of the logistics boxes, greatly improving the loading and unloading efficiency of the logistics boxes, and improving the transportation efficiency of the entire logistics transportation chain; At the same time, the anti-return mechanism can limit the rotation direction of the drive shaft, so that even if the drive shaft is deflected by external force, it can only rotate counterclockwise and cannot rotate clockwise, ensuring the clamping quality of the clamping and top support of the clamping part, and significantly improving the connection stability between multiple vertically stacked logistics boxes. In actual transportation, even under bumpy road conditions, the connection between the logistics boxes is still firm and reliable, avoiding the risk of cargo damage due to shaking, and greatly improving the transportation quality and safety of the logistics boxes.

[0015] In order to more clearly illustrate the structural features and effects of the present invention, the present invention is described in detail below in conjunction with the accompanying drawings and specific embodiments. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 A schematic diagram of the structure of a logistics box for logistics freight provided in an embodiment of the present invention.

[0017] Figure 2 A bottom view of the structure of a logistics box for logistics freight provided in an embodiment of the present invention.

[0018] Figure 3 A schematic diagram of the structure of logistics boxes for logistics and freight in a vertically stacked state provided by an embodiment of the present invention.

[0019] Figure 4 for Figure 1 Structural explosion diagram of the main body of the material box.

[0020] Figure 5 for Figure 1 Schematic diagram of the structure after removing the main body of the logistics box.

[0021] Figure 6 for Figure 2 Structural style diagram after removing the main body of the logistics box.

[0022] Figure 7 for Figure 5 A magnified view of the midsole support structure.

[0023] Figure 8 for Figure 5 Enlarged view of the structure of the clamping mechanism and the anti-return mechanism.

[0024] Fig. 9 for Figure 6 Schematic diagram of the structure of the first adjustment component.

[0025] Fig.10 for Figure 6 Schematic diagram of the structure of the second adjustment component.

[0026] Figure numerals: 100-logistics box body, 110-side support, 120-top support, 130-bottom plate, 140-side fence, 200-bottom support, 210-support part, 220-clamping part, 230-installation cavity, 240-connection cavity, 250-side sealing plate, 300-clamping mechanism, 310-driving shaft, 320-pulley one, 330-toothed belt, 340-pulley two, 350-installation shaft, 360-clamping plate, 400-fixed slide rail, 500-first adjustment component, 51 0-connecting seat one, 520-screw rod one, 530-screw sleeve one, 540-connecting sleeve, 550-dial plate, 600-second adjustment component, 610-connecting seat two, 620-fixing rod, 630-connecting rod, 640-screw sleeve two, 650-screw rod two, 660-handle, 700-elastic limiting mechanism, 710-limiting rod, 720-spring one, 800-anti-return mechanism, 810-ratchet, 820-anti-return block, 830-mounting block, 840-pressing part, 850-spring two. DETAILED DESCRIPTION

[0027] In order to make the purpose, technical solution and advantages of the present invention more clearly understood, the present invention is further described in detail below in conjunction with the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are only used to explain the present invention and are not intended to limit the present invention.

[0028] The specific implementation of the present invention is described in detail below in conjunction with specific embodiments.

[0029] like Figures 1 to 8 As shown, a logistics box for logistics and freight provided as an embodiment of the present invention includes a logistics box body 100, and the logistics box body 100 is composed of a side support 110, a top support 120, a bottom plate 130, a side fence 140, a bottom support 200 and a fixed slide rail 400. The upper and lower ends of the side support 110 are fixedly connected to the top support 120 and the bottom plate 130 respectively, and the side fence 140 is located between the top support 120 and the bottom plate 130. The fixed slide rail 400 is symmetrically fixed to the bottom of the bottom plate 130, and the front and rear ends of the fixed slide rail 400 are A bottom support 200 is symmetrically and slidably installed, and a support portion 210 is provided at the bottom of the bottom support 200. The support portion 210 can suspend the logistics box body 100, which not only makes it convenient for mobile equipment such as a forklift to lift the logistics box body 100 and move it, but also prevents water or dust from the bottom from entering the logistics box body 100, thereby ensuring the storage quality of objects inside the logistics box body 100. The top of the bottom support 200 is provided with an installation cavity 230, and one side of the bottom support 200 is provided with a clamping portion 220, and also includes: The clamping mechanism 300 comprises a driving shaft 310, a pulley 1 320, a toothed belt 330, a pulley 2 340, a mounting shaft 350 and a clamping plate 360. The driving shaft 310 is rotatably mounted in the mounting cavity 230 and is horizontally slidably connected to the bottom support 200. The pulley 1 320 is horizontally slidably mounted on the driving shaft 310. The mounting shaft 350 is rotatably mounted on one side of the bottom support 200 and is located above the clamping portion 220. The clamping plate 360 ​​and the pulley 2 340 are fixed to the mounting shaft 350 in sequence. The clamping plate 360 ​​intermittently cooperates with the clamping portion 220 and completes the clamping of the top support 120. The two ends of the toothed belt 330 are respectively meshed with the pulley 1 320 and the pulley 2 340. A backflow prevention mechanism 800, wherein the backflow prevention mechanism 800 is installed in the installation cavity 230, and one end of the backflow prevention mechanism 800 is horizontally slidably connected to the drive shaft 310, and the backflow prevention mechanism 800 is used to limit the rotation direction of the drive shaft 310 so that it can only rotate counterclockwise; In the initial state, the installation direction of the clamping plate 360 ​​is inclined to the clamping portion 220, so that the space between the clamping plate 360 ​​and the clamping portion 220 is sufficient for the top support 120 to move in and out quickly and effectively, providing basic conditions for the subsequent vertical stacking of logistics boxes; When multiple logistics boxes need to be stacked vertically, the top support 120 on the logistics box body 100 at the bottom is accurately introduced between the clamping plate 360 ​​and the clamping part 220 at the bottom of the logistics box body 100 above it, and the driving shaft 310 drives the pulley 1 320 and the anti-return mechanism 800 to rotate counterclockwise at the same time. The pulley 1 320 drives the pulley 2 340 to rotate counterclockwise through the toothed belt 330, and the pulley 2 340 drives the installation shaft 350 to rotate counterclockwise. The installation shaft 350 drives the inclined clamping plate 360 ​​to rotate in the direction close to the clamping part 220. In this process, the clamping plate 360 ​​is tightly matched with the clamping part 220. The top support 120 located on the bottom logistics box body 100 can be clamped and fixed, so that the upper and lower logistics boxes can be connected as a whole, and the vertical stacking of logistics boxes can be realized. This can not only reduce the space occupied by the logistics boxes during transportation, but also effectively expand the originally limited transportation space. Compared with the traditional flat placement, the vertical stacking method can improve the transportation efficiency of the logistics boxes, reduce the transportation cost of the logistics boxes, and facilitate loading and unloading. The loading and unloading operations of multiple logistics boxes can be completed at one time, shortening the loading and unloading time of the logistics boxes, greatly improving the loading and unloading efficiency of the logistics boxes, and improving the transportation efficiency of the entire logistics transportation chain; At the same time, the anti-return mechanism 800 can limit the rotation direction of the drive shaft 310. After the clamping plate 360 ​​completes the clamping work on the top support 120, due to the restriction of the anti-return mechanism 800, the drive shaft 310 can only rotate counterclockwise even if it is deflected under the action of external force, and cannot rotate clockwise, thereby ensuring the clamping quality of the clamping and clamping part 220 on the top support 120, significantly improving the connection stability between multiple vertically stacked logistics boxes, and in actual transportation, even under bumpy road conditions, the connection between the logistics boxes is still firm and reliable, avoiding the risk of damage to goods due to shaking, and greatly improving the transportation quality and transportation safety of the logistics boxes.

[0030] In this embodiment, the support portion 210, the clamping portion 220 and the installation cavity 230 on the bottom support 200 are preferably manufactured by an integrated molding process, which can not only ensure the working quality of the clamping portion 220 and the support portion 210, but also reduce the installation time and manufacturing cost of the bottom support 200; The top support 120 preferably adopts a support structure composed of four support tubes, and the support tubes and the side supports 110 can be connected as a whole by screw locking.

[0031] like Figures 5 to 8 As shown, as a preferred embodiment of the present invention, the anti-return mechanism 800 includes a ratchet 810, a anti-return block 820, a mounting block 830, a pressing portion 840 and a second spring 850, the ratchet 810 is fixed on the drive shaft 310, the mounting block 830 is fixed in the mounting cavity 230, the anti-return block 820 is rotatably mounted on the mounting block 830, one end of the anti-return block 820 cooperates with the circumferentially distributed grooves on the outer wall of the ratchet 810, a second spring 850 is fixed between the bottom of one end of the anti-return block 820 and the mounting block 830, and the other end of the anti-return block 820 is fixed with a pressing portion 840.

[0032] In this embodiment, in the initial state, the second spring 850 can drive one end of the check block 820 to move downward by cooperating with the mounting block 830, so that the check block 820 is engaged with the groove on the ratchet 810. The check block 820 can limit the rotation direction of the drive shaft 310 by cooperating with the groove on the ratchet 810, so that the drive shaft 310 can only rotate counterclockwise even if it is deflected by an external force, and cannot rotate clockwise, thereby ensuring the clamping quality of the clamping and clamping part 220 on the top support 120, and significantly improving the connection stability between multiple vertically stacked logistics boxes; When the vertically stacked logistics boxes need to be disassembled, the pressing portion 840 presses the other end of the check block 820 downward, so that one end of the check block 820 moves upward. By moving upward, one end of the check block 820 can be separated from the ratchet 810, thereby releasing the restriction on the drive shaft 310 and making the drive shaft 310 in a free state; at this time, the drive shaft 310 rotates clockwise and drives the pulley 1 320 to rotate synchronously and in the same direction, and the pulley 1 320 drives the pulley 2 340 to rotate clockwise through the toothed belt 330, and the pulley 2 340 drives the splint 360 to rotate clockwise through the installation shaft 350, so that the splint 360 rotates in the direction away from the clamping part 220, and then the splint 360 rotates to the initial state. At this time, the space between the splint 360 and the clamping part 220 can meet the needs of the top support 120 to quickly and effectively enter and exit, thereby easily releasing the connection between the upper and lower logistics boxes, realizing the rapid disassembly of the vertically stacked logistics boxes, and facilitating the staff to quickly take the objects stored in the logistics boxes, thereby improving the practicality and convenience of the logistics boxes.

[0033] like Figures 5 to 10 As shown, as a preferred embodiment of the present invention, a connecting cavity 240 is provided on the other side of the bottom support 200, and a side sealing plate 250 is fixed on one side of the connecting cavity 240. The side sealing plates 250 on the left and right bottom supports 200 are close to each other, and a first adjustment component 500 is provided between the left and right bottom supports 200. The two ends of the first adjustment component 500 are respectively connected to the side sealing plates 250 on the left and right bottom supports 200. The first adjustment component 500 can change the distance between the left and right bottom supports 200, which can not only change the distance between the left and right bottom supports 200, but also can change the distance between the left and right bottom supports 200. The variable bottom support 200 increases the supporting area of ​​the logistics box body 100, ensuring the safety and stability of the logistics box. It can also facilitate the effective connection between the bottom support 200 and the top support 120 on the logistics box bodies 100 of different specifications, and facilitate the top supports 120 on the logistics box bodies 100 of different specifications to quickly and effectively enter and exit the space enclosed by the splint 360 and the clamping part 220, providing the basic conditions for the subsequent vertical stacking of logistics boxes, so that logistics boxes of different specifications can be effectively and quickly stacked vertically together, thereby expanding the applicability and convenience of the logistics box.

[0034] like Figures 5 to 10As shown, as a preferred embodiment of the present invention, the first adjustment component 500 includes a connecting seat 510, a screw 520, a screw sleeve 530, a connecting sleeve 540 and a shift plate 550, the connecting seat 510 is fixed to the outside of the side sealing plate 250, a screw 520 is fixed to the connecting seat 510, and the threads on the left and right screws 520 are in opposite directions, the screw sleeve 530 is located between the left and right bottom supports 200, and the two ends of the screw sleeve 530 are respectively threadedly connected to the left and right distributed screws 520, a connecting sleeve 540 is fixed to the outside of the screw sleeve 530, and the outer wall of the connecting sleeve 540 is circumferentially distributed with shift plates 550.

[0035] In this embodiment, the dial plate 550 is rotated by the connecting sleeve 540, and the connecting sleeve 540 drives the screw sleeve 530 to rotate. The screw sleeve 530 can drive the left and right side sealing plates 250 to move closer to or away from each other by cooperating with the connecting seat 510 and the screw rod 520. The left and right side sealing plates 250 drive their respective bottom supports 200 to move closer to or away from each other, thereby facilitating the effective connection between the bottom support 200 and the top support 120 on the logistics box body 100 of different specifications, and facilitating the top supports 120 on the logistics box body 100 of different specifications to quickly and effectively enter and exit the space enclosed by the clamping plate 360 ​​and the clamping part 220, providing the basic conditions for the subsequent vertical stacking of logistics boxes, so that logistics boxes of different specifications can be effectively stacked vertically together, thereby expanding the applicability and convenience of the logistics boxes.

[0036] In a preferred embodiment, the driving method of the paddle 550 can be manual rotation or electric drive, for example, a driving method in which a motor and a transmission structure are matched, and the motor drives the paddle 550 or the connecting sleeve 540 to rotate through the transmission structure.

[0037] like Figures 5 to 10As shown, as a preferred embodiment of the present invention, a second adjustment component 600 and an elastic limiting mechanism 700 are respectively provided between the front and rear bottom supports 200, and the second adjustment component 600 is fixedly connected to the outer wall of the connecting cavity 240. The second adjustment component 600 is used to adjust the distance between the front and rear bottom supports 200, which can not only change the supporting area of ​​the bottom support 200 on the logistics box body 100 to ensure the safety and stability of the logistics box, but also facilitate the top support 120 to quickly and effectively enter and exit the space enclosed by the clamping plate 360 ​​and the clamping portion 220, so as to provide a space for the rear The vertical stacking of the logistics boxes provides the basic conditions. The two ends of the elastic limiting mechanism 700 are respectively installed in the two connecting cavities 240. The elastic limiting mechanism 700 is used to control the direction and stroke of the two bottom supports 200 moving in the same fixed slide rail 400. It can not only avoid the two bottom supports 200 from being separated from the fixed slide rail 400, ensuring the connection stability between the bottom supports 200 and the fixed slide rail 400, but also can push the two bottom supports 200 at the same time, ensuring that the center of gravity position of the logistics box main body 100 remains unchanged, ensuring the stability and safety of the logistics box during transportation.

[0038] like Figures 5 to 10 As shown, as a preferred embodiment of the present invention, the second adjustment component 600 includes a connecting seat 610, a fixed rod 620, a connecting rod 630, a screw sleeve 640, a screw 650 and a turning handle 660. The connecting seat 610 is fixed to the outside of the connecting cavity 240, and a fixed rod 620 is fixed on one side of the connecting seat 610. A connecting rod 630 is rotatably installed on one end of the fixed rod 620. The front and rear connecting rods 630 are rotatably connected to the outer wall of the screw sleeve 640. The screw sleeve 640 is located between the front and rear bottom supports 200. The screw sleeve 640 is threadedly connected to the screw 650 installed in the middle of the fixed slide rail 400, and a turning handle 660 is fixed on one end of the screw 650.

[0039] In this embodiment, the turning handle 660 drives the screw rod 2 650 to rotate, and the screw rod 2 650 drives the screw sleeve 2 640 to move vertically. The screw sleeve 2 640 can drive the front and rear fixed rods 620 to move closer to or away from each other by vertical movement and cooperation with the connecting rod 630. The front and rear fixed rods 620 drive the front and rear bottom supports 200 to move away from or closer to each other in the fixed slide rail 400 through the connecting seat 2 610, thereby adjusting the distance between the front and rear bottom supports 200. This not only changes the supporting area of ​​the bottom support 200 for the logistics box body 100, ensuring the safety and stability of the logistics box, but also facilitates the top support 120 to quickly and effectively enter and exit the space enclosed by the splint 360 and the clamping portion 220, providing basic conditions for the subsequent vertical stacking of logistics boxes.

[0040] In a preferred embodiment, the handle 660 can be driven by manual rotation or by electric drive, for example, a motor and a transmission structure are used to drive the handle 660 or the screw rod 650 to rotate through the transmission structure.

[0041] like Figures 2 to 6 As shown, as a preferred embodiment of the present invention, the elastic limiting mechanism 700 includes a limiting rod 710 and a spring 720, and the two ends of the limiting rod 710 respectively extend into the connecting cavity 240 of the left and right bottom supports 200, and are horizontally slidably connected to the connecting cavity 240, and a spring 720 is sleeved on the outer wall of the limiting rod 710, and the spring 720 is located between the left and right bottom supports 200 and its two ends are respectively connected to the outer walls of the left and right installation cavities 230.

[0042] In this embodiment, the limit rod 710 can control the direction and stroke of the two bottom supports 200 in the same fixed slide rail 400 by means of horizontal sliding connection with the left and right connecting cavities 240, thereby preventing the two bottom supports 200 from being separated from the fixed slide rail 400 and ensuring the connection stability between the bottom supports 200 and the fixed slide rail 400. When the left and right bottom supports 200 are close to each other, the two bottom supports 200 can squeeze the spring 1 720 to put it in a force storage state. When the two bottom supports 200 are away from each other, the spring 1 720 releases the elastic force and pushes the two bottom supports 200 at the same time, ensuring that the center of gravity position of the logistics box body 100 remains unchanged, thereby ensuring the stability and safety of the logistics box during transportation.

[0043] In a preferred embodiment, a nut is threadedly installed on one end of the limiting rod 710 extending to the connecting cavity 240 , and the nut can control the moving stroke of the bottom support 200 so that it will not be separated from the fixed slide rail 400 .

[0044] The working principle of the present invention is: In the initial state, the installation direction of the clamping plate 360 ​​is inclined to the clamping portion 220, so that the space between the clamping plate 360 ​​and the clamping portion 220 is sufficient for the top support 120 to move in and out quickly and effectively, providing basic conditions for the subsequent vertical stacking of logistics boxes; When multiple logistics boxes need to be stacked vertically, the top support 120 on the logistics box body 100 at the bottom is accurately introduced between the clamping plate 360 ​​and the clamping part 220 at the bottom of the logistics box body 100 above it, and the driving shaft 310 drives the pulley 1 320 and the anti-return mechanism 800 to rotate counterclockwise at the same time. The pulley 1 320 drives the pulley 2 340 to rotate counterclockwise through the toothed belt 330, and the pulley 2 340 drives the installation shaft 350 to rotate counterclockwise. The installation shaft 350 drives the inclined clamping plate 360 ​​to rotate in the direction close to the clamping part 220. In this process, the clamping plate 360 0 Through close cooperation with the clamping part 220, the top support 120 located on the bottom logistics box body 100 can be clamped and fixed, so that the upper and lower logistics boxes can be connected as a whole, and the vertical stacking of the logistics boxes can be realized. This not only reduces the space occupied by the logistics boxes during transportation, but also effectively expands the originally limited transportation space. Compared with the traditional flat placement, the vertical stacking method can improve the transportation efficiency of the logistics boxes, reduce the transportation cost of the logistics boxes, and facilitate loading and unloading. The loading and unloading operations of multiple logistics boxes can be completed at one time, shortening the loading and unloading time of the logistics boxes; At the same time, the anti-return mechanism 800 can limit the rotation direction of the drive shaft 310. The second spring 850 can drive one end of the anti-return block 820 to move downward by cooperating with the mounting block 830, so that the anti-return block 820 is engaged with the groove on the ratchet 810. The anti-return block 820 can limit the rotation direction of the drive shaft 310 by cooperating with the groove on the ratchet 810, so that even if the drive shaft 310 is deflected by an external force, it can only rotate counterclockwise and cannot rotate clockwise, thereby ensuring the clamping quality of the clamping and clamping part 220 on the top support 120, and significantly improving the connection stability between multiple vertically stacked logistics boxes; When the vertically stacked logistics boxes need to be disassembled, the pressing portion 840 presses the other end of the check block 820 downward, so that one end of the check block 820 moves upward. By moving upward, one end of the check block 820 can be separated from the ratchet 810, thereby releasing the restriction on the drive shaft 310 and making the drive shaft 310 in a free state; at this time, the drive shaft 310 rotates clockwise and drives the pulley 1 320 to rotate synchronously and in the same direction, and the pulley 1 320 drives the pulley 2 340 clockwise through the toothed belt 330 The needle rotates, and the pulley 2 340 drives the clamping plate 360 ​​to rotate clockwise through the mounting shaft 350, so that the clamping plate 360 ​​rotates in the direction away from the clamping portion 220, and then the clamping plate 360 ​​rotates to the initial state. At this time, the space between the clamping plate 360 ​​and the clamping portion 220 can meet the requirements of the top support 120 to quickly and effectively enter and exit, thereby easily releasing the connection between the upper and lower logistics boxes, realizing the rapid disassembly of the vertically stacked logistics boxes, and facilitating the staff to quickly take the objects stored in the logistics boxes; The dial plate 550 is rotated by the connecting sleeve 540, and the connecting sleeve 540 drives the screw sleeve 530 to rotate. The screw sleeve 530 can drive the left and right side sealing plates 250 to move closer to or away from each other by cooperating with the connecting seat 510 and the screw rod 520. The left and right side sealing plates 250 drive their respective bottom supports 200 to move closer to or away from each other, thereby changing the convenience of the bottom support 200 and the top support 120 on the logistics box body 100 of different specifications to be effectively connected, and facilitating the top support 120 on the logistics box body 100 of different specifications to quickly and effectively enter and exit the space surrounded by the clamping plate 360 ​​and the clamping part 220, which provides the basic conditions for the subsequent vertical stacking of logistics boxes, so that logistics boxes of different specifications can be effectively stacked vertically together; The turning handle 660 drives the second screw rod 650 to rotate, and the second screw rod 650 drives the second screw sleeve 640 to move vertically. The second screw sleeve 640 can drive the front and rear fixed rods 620 to move closer to or away from each other through vertical movement and cooperation with the connecting rod 630. The front and rear fixed rods 620 drive the front and rear bottom supports 200 to move away from or closer to each other in the fixed slide rail 400 through the second connecting seat 610, thereby adjusting the distance between the front and rear bottom supports 200. This can not only change the supporting area of ​​the bottom support 200 on the logistics box body 100, ensuring the safety and stability of the logistics box, but also facilitate the top support 120 to quickly and effectively enter and exit the space surrounded by the clamping plate 360 ​​and the clamping part 220, providing basic conditions for the subsequent vertical stacking of logistics boxes. The limiting rod 710 can control the direction and stroke of the two bottom supports 200 in the same fixed slide rail 400 by horizontally slidingly connecting with the left and right connecting cavities 240, so as to prevent the two bottom supports 200 from being separated from the fixed slide rail 400, thereby ensuring the connection stability between the bottom supports 200 and the fixed slide rail 400. When the left and right bottom supports 200 are close to each other, the two bottom supports 200 can squeeze the spring 1 720 to put it in a force storage state. When the two bottom supports 200 are away from each other, the spring 1 720 releases the elastic force to push the two bottom supports 200 at the same time, thereby ensuring that the center of gravity of the logistics box body 100 remains unchanged. The above is the working principle of the logistics box for logistics freight.

[0045] The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. Any modifications, equivalent substitutions and improvements made within the spirit and principles of the present invention should be included in the protection scope of the present invention.

Claims

1. A logistics box for logistics and freight, comprising a logistics box body, the logistics box body is composed of side supports, a top support, a bottom plate, a side fence, a bottom support and a fixed slide rail, the upper and lower ends of the side supports are respectively fixedly connected to the top support and the bottom plate, the side fence is located between the top support and the bottom plate, the fixed slide rail is symmetrically fixed to the bottom of the bottom plate, the front and rear ends of the fixed slide rail are symmetrically and slidably installed with the bottom support, the bottom of the bottom support is provided with a supporting portion, the top of the bottom support is provided with an installation cavity, and one side of the bottom support is provided with a clamping portion, characterized in that Also includes: A clamping mechanism, the clamping mechanism comprises a driving shaft, a first pulley, a toothed belt, a second pulley, a mounting shaft and a clamping plate, the driving shaft is rotatably mounted in the mounting cavity and is horizontally slidably connected with the bottom support, a first pulley is horizontally slidably mounted on the driving shaft, the mounting shaft is rotatably mounted on one side of the bottom support and is located above the clamping portion, a clamping plate and a second pulley are fixed on the mounting shaft in sequence, the clamping plate and the clamping portion intermittently cooperate and complete the clamping of the top support, and the two ends of the toothed belt are respectively meshed with the first pulley and the second pulley; The driving shaft drives the pulley 1 to rotate counterclockwise, the pulley 1 drives the pulley 2 to rotate counterclockwise through the toothed belt, the pulley 2 drives the installation shaft to rotate counterclockwise, the installation shaft drives the inclined clamping plate to rotate in the direction close to the clamping part, the clamping plate clamps and fixes the top support on the bottom logistics box body by closely cooperating with the clamping part and realizes the vertical stacking of the logistics boxes; The anti-return mechanism is installed in the installation cavity, one end of the anti-return mechanism is horizontally slidably connected with the driving shaft, and the anti-return mechanism realizes unidirectional counterclockwise rotation of the driving shaft by limiting the driving shaft.

2. The logistics box for logistics and freight transportation according to claim 1 is characterized in that: The anti-return mechanism comprises: A ratchet wheel is fixed on the driving shaft, and the outer wall of the ratchet wheel is provided with grooves distributed circumferentially; A mounting block fixed in the mounting cavity; A check block rotatably mounted on the mounting block, one end of the check block being matched with a groove on the outer wall of the ratchet, and a second spring being fixed between the bottom of one end of the check block and the mounting block; A pressing portion fixed to the other end of the check block.

3. The logistics box for logistics and freight transportation according to claim 1 is characterized in that: A connecting cavity is provided on the other side of the bottom support, and a side sealing plate is fixed on one side of the connecting cavity. The side sealing plates on the left and right bottom supports are close to each other, and a first adjustment component is provided between the left and right bottom supports, and both ends of the first adjustment component are respectively connected to the side sealing plates on the left and right bottom supports, and the first adjustment component is used to change the distance between the left and right bottom supports.

4. The logistics box for logistics and freight transportation according to claim 3 is characterized in that: The first adjustment component comprises: A connecting seat 1 fixed to the outside of the side sealing plate; A screw rod 1 fixed on a connecting seat 1, wherein the threads of the left and right screw rods 1 are in opposite directions; A screw sleeve 1 is located between the left and right bottom supports, and the two ends of the screw sleeve 1 are respectively threadedly connected to the two left and right distributed screw rods 1; A connecting sleeve fixed to the outside of the screw sleeve; The paddles are circumferentially distributed on the outer wall of the connecting sleeve.

5. The logistics box for logistics and freight transportation according to claim 3 is characterized in that: A second adjustment component and an elastic limiting mechanism are respectively provided between the front and rear bottom supports. The second adjustment component is fixedly connected to the outer wall of the connecting cavity. The second adjustment component is used to adjust the distance between the front and rear bottom supports. The two ends of the elastic limiting mechanism are respectively installed in the two connecting cavities. The elastic limiting mechanism is used to control the direction and stroke of movement of the two bottom supports in the same fixed slide rail.

6. The logistics box for logistics and freight transportation according to claim 5 is characterized in that: The second adjustment component comprises: A second connection seat fixed outside the connection cavity; A fixing rod fixed to one side of the second connecting seat; Rotate the connecting rod installed on one end of the fixed rod; A screw sleeve 2 is located between the front and rear bottom supports, and the outer wall of the screw sleeve 2 is rotatably connected to the front and rear connecting rods; A second screw rod is fixed to the middle of the fixed slide rail, wherein the second screw rod is threadedly connected to the second screw sleeve; A handle fixed on one end of the screw rod.

7. The logistics box for logistics and freight transportation according to claim 5 is characterized in that: The elastic limiting mechanism comprises: The two ends of the limit rods extend to the connection cavities of the left and right bottom supports respectively, and the limit rods are horizontally slidably connected to the connection cavities; A spring 1 is sleeved on the outer wall of the limiting rod, wherein the spring 1 is located between the left and right bottom supports and the two ends of the spring are respectively connected to the outer walls of the left and right connecting cavities.

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