Side-turning self-discharging type goods standardization circulation logistics carrier

Abstract

The invention relates to the technical field of circulating carriers, and discloses a rollover self-unloading type goods standardized circulating logistics carrier which comprises a logistics carrier body used for goods transportation, the logistics carrier body is a rectangular box body composed of a bottom frame and a frame installed on the periphery of the bottom frame, and the upper end face of the box body is open and used for bearing and transporting goods; a side frame door is arranged between two adjacent side frames of the box body, the upper end of the side frame door is rotatably connected with the upper ends of the two side frames through a rotating shaft, the lower end of the side frame door and the box body are detachably connected with a bottom frame through two sets of self-locking mechanisms, each self-locking mechanism comprises a connecting rod, and the connecting rods are rotatably connected with the bottom frame of the box body through a first support. And a lock catch is vertically and fixedly mounted at one end of the connecting rod. During unloading, the box body is inclined towards one side of the side frame door around the second bracket; the first chain is loosened, so that the connecting rod rotates under the action of gravity, and the lock catch is automatically separated from the side frame door; and the side frame door is automatically opened under the action of gravity.

Description

Technical Field

[0001] This invention relates to the field of circular transport vehicle technology, specifically to a side-tipping self-unloading standardized circular logistics vehicle for cargo. Background Technology

[0002] In the field of modern logistics and transportation, standardized and unitized vehicles (such as containers, crates, and palletized containers) have been widely used because they can effectively improve loading and unloading efficiency, protect goods, and facilitate multimodal transport. However, achieving fast and labor-saving unloading of bulk materials, bagged goods, or small standard parts has always been a challenge in the industry. Traditional fixed containers often require manual labor or auxiliary machinery (such as tilting platforms and conveyor belts) to remove goods from the top or side during unloading, which is not only inefficient and labor-intensive, but also prone to causing damage to goods or safety accidents during the tilting or retrieval process.

[0003] To overcome the aforementioned problems, various self-unloading logistics boxes have emerged in existing technologies. For example, some boxes are equipped with a bottom door that can be flipped over, allowing forklifts or other handling equipment to lift the box and let the goods flow out under gravity. However, unloading still requires manual dragging and lifting equipment assistance, which is not only inefficient and labor-intensive, but also prone to damage to goods due to improper human operation. This is especially true for bagged or bulk goods, where the unloading process is cumbersome and prone to leaving residue. Summary of the Invention

[0004] (a) Technical problems to be solved To address the shortcomings of existing technologies, this application provides a standardized circular logistics vehicle for side-tipping self-unloading cargo.

[0005] (II) Technical Solution To address the aforementioned issues, this application provides the following technical solution: a side-tipping self-unloading standardized circular logistics vehicle for cargo transportation, comprising a logistics vehicle for cargo transportation, wherein the logistics vehicle is a rectangular box consisting of a base frame and a frame installed around the base frame, and the upper surface of the box is open for carrying and transporting cargo. The box body is provided with a side frame door between the adjacent two side frames. The upper end of the side frame door is rotatably connected to the upper end of the two side frames through a pivot. The lower end of the side frame door is detachably connected to the box body and the bottom frame through two sets of self-locking mechanisms. The self-locking mechanism includes a connecting rod. The connecting rod is rotatably connected to the bottom frame of the box body through a first bracket. A buckle is vertically fixed at one end of the connecting rod for locking the side frame door to the bottom frame of the box body. Two sets of self-unloading mechanisms are fixedly installed at the bottom of the box frame along the central axis. The self-unloading mechanism includes a hollow square tube that is rotatably connected to the bottom of the box frame at one end through a second bracket. The other end of the hollow square tube is adapted to the steel fork on the forklift and is used by the forklift to move the box. The upper side of the other end of the hollow square tube is connected to the side frame corresponding to the side door through a locking component. The bottom of the square tube and the other end of the connecting rod are connected by a first chain, and one side of the square tube is fixedly connected to the bottom frame of the box by a second chain. During the loading, unloading and transportation of goods in the box, the other end of the square tube is locked to the box frame through a locking assembly, and the side frame door is locked to the bottom frame of the box through a latch. The first chain is in a taut state and the second chain is in a released state. When the goods in the box are unloaded through the side frame door, the other end of the square tube is separated from the box frame by a locking assembly. Pressure is applied to the other end of the square tube, causing the box to tilt around the second support towards the side frame door. The second chain is in a taut state under the weight of the goods inside the box, while the first chain is in a released state. The end of the connecting rod with the buckle rotates around the first support under the weight of gravity, causing the buckle to release from the side frame door and the bottom frame of the box. The side frame door rotates around the upper pivot under the weight of gravity, making its lower end open to the inside of the box. The goods are unloaded automatically while tilted.

[0006] (III) Beneficial Effects Compared with the prior art, this application provides a standardized circular logistics vehicle for side-tipping self-unloading cargo, which has the following beneficial effects: 1. This standardized, self-unloading, side-tipping cargo recycling vehicle tilts the container towards the side door around the second support during unloading. The first chain loosens, causing the connecting rod to rotate under gravity, automatically disengaging the latch from the side door. The side door then opens automatically under gravity. This not only ensures fast unloading but also eliminates the safety risks associated with manual operation beside the tilted container.

[0007] 2. This side-tipping self-unloading standardized circular logistics vehicle allows goods to slide down by gravity, making it suitable for bagged and bulk cargo. It eliminates the need for manual assistance, improves unloading efficiency, reduces labor intensity, and avoids cargo damage and personnel safety hazards associated with manual operation. 3. This side-tipping self-unloading standardized circular logistics vehicle features detachable wheels. For short distances, wheels can be installed for manual pushing, while for long distances, wheels can be removed for stable transportation. It is suitable for various logistics scenarios such as warehouse turnover, loading and positioning, long-distance transportation, and hoisting and transfer, solving the problem of weak adaptability of existing vehicles and improving the flexibility of logistics turnover.

[0008] 4. This side-tipping self-unloading standardized circular logistics carrier adopts a standardized rectangular structure for its container, which is suitable for standardized carrying of various types of goods and can be seamlessly connected with the existing circular logistics system. The components are simple in structure and low in manufacturing cost, which is convenient for mass production. At the same time, the stacking, handling and unloading processes are standardized, easy to operate and easy to promote, which can effectively promote the standardization and efficiency of the circular logistics link.

[0009] 5. This side-tipping self-unloading standardized circular logistics vehicle is equipped with a shock-absorbing component consisting of sleeves, sliding rods, and shock-absorbing springs. This component can buffer the instantaneous impact force generated by the tilting of the container and the sliding of the cargo during unloading, protect the second chain, the second support, and the overall structure of the container, and reduce wear on parts.

[0010] Additional aspects and advantages of this application will be set forth in part in the description which follows, and in part will be obvious from the description, or may be learned by practice of this application. Attached Figure Description

[0011] The above and / or additional aspects and advantages of this application will become apparent and readily understood from the description of the embodiments taken in conjunction with the following drawings, in which: Figure 1 This is one of the structural schematic diagrams of a side-tipping self-unloading standardized circular logistics vehicle for goods according to this application; Figure 2 This is the second structural schematic diagram of a standardized circular logistics vehicle for side-tipping self-unloading cargo according to this application; Figure 3 This is a structural schematic diagram of the unloading state of a side-tipping self-unloading standardized circular logistics vehicle for goods according to this application; Figure 4 This is a schematic diagram of the side structure of a standardized circular logistics vehicle for side-tipping self-unloading cargo according to this application; Figure 5 This is a schematic diagram of the structure of the tie rod of a side-tipping self-unloading standardized circular logistics vehicle for goods, as described in this application; Figure 6 For this application Figure 5 Enlarged structural diagram at point A; Figure 7 This is a schematic diagram of the locking mechanism of this application; Figure 8 For this application Figure 7 Enlarged structural diagram at point B; Figure 9 For this application Figure 7 Enlarged structural diagram at point C; Figure 10 This is a schematic diagram of the running wheels of a side-tipping self-unloading standardized circular logistics vehicle for goods, as described in this application. Figure 11This is a schematic diagram of the stacking state structure of a side-tipping self-unloading standardized circular logistics vehicle for goods, as described in this application.

[0012] Reference numerals: 1. Box body; 11. Side frame door; 12. Card plate; 13. Pull ring; 14. Base; 2. Connecting rod; 21. Lock; 22. First bracket; 3. First chain; 4. Square tube; 41. Second bracket; 42. Sleeve; 421. Slide rod; 422. Shock-absorbing spring; 5. Second chain; 6. Locking assembly; 61. Horizontal tube; 611. Mounting seat; 612. Rotating shaft; 613. Torsion spring; 62. Pull rod; 621. Locking block; 63. Locking platform; 64. Bolt; 65. Locking plate; 651. Slot; 7. Forklift; 8. Traveling wheel; 81. Traveling wheel mounting seat. Detailed Implementation

[0013] The technical solutions of the embodiments of this application will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of this application, and not all embodiments. Based on the embodiments of this application, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of this application.

[0014] The terms "first" and "second" in the specification and claims of this application may explicitly or implicitly include one or more of the features. In the description of this application, unless otherwise stated, "multiple" means two or more. Furthermore, "and / or" in the specification and claims indicates at least one of the connected objects, and the character " / " generally indicates that the preceding and following objects are in an "or" relationship.

[0015] In the description of this application, it should be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", "axial", "radial", "circumferential", etc., indicating the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings, are only for the convenience of describing this application and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of this application.

[0016] In the description of this application, it should be noted that, unless otherwise expressly specified and limited, the terms "installation," "connection," and "linking" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; and they can refer to the internal connection between two components. Those skilled in the art can understand the specific meaning of the above terms in this application based on the specific circumstances.

[0017] Please see Figures 1-11 This application provides a new technical solution: a side-tipping self-unloading standardized circular logistics vehicle for goods, including a logistics vehicle for transporting goods, wherein the logistics vehicle is a rectangular box 1 consisting of a bottom frame and a frame installed around the bottom frame, and the upper surface of the box 1 is open for carrying transported goods. A side frame door 11 is provided between the adjacent side frames of the box body 1. The upper end of the side frame door 11 is rotatably connected to the upper end of the side frames via a pivot. The lower end of the side frame door 11 is detachably connected to the box body 1 and the bottom frame via two sets of self-locking mechanisms. The self-locking mechanism includes a connecting rod 2. The connecting rod 2 is rotatably connected to the bottom frame of the box body 1 via a first bracket 22. A latch 21 is vertically fixed at one end of the connecting rod 2 for locking the side frame door 11 to the bottom frame of the box body 1. Two sets of self-unloading mechanisms are fixedly installed at the bottom of the bottom frame of the box 1 along the central axis. The self-unloading mechanism includes a hollow square tube 4 at one end that is rotatably connected to the bottom of the bottom frame of the box 1 via a second bracket 41. The other end of the hollow square tube 4 is adapted to the steel fork on the forklift 7, and the forklift 7 is used to drive the box 1 to move. The upper side of the other end of the hollow square tube 4 is connected to the side frame corresponding to the side frame door 11 via a locking assembly. The bottom of the square tube 4 and the other end of the connecting rod 2 are connected by the first chain 3, and one side of the square tube 4 is fixedly connected to the bottom frame of the box body 1 by the second chain 5. When loading, unloading and transporting goods in the container 1, the other end of the square tube 4 is locked to the frame of the container 1 through the locking assembly 6. The side frame door 11 is locked to the bottom frame of the container 1 through the buckle 21. The first chain 3 is in a taut state and the second chain 5 is in a released state. When the goods in the box 1 are unloaded through the side frame door 11, the other end of the square tube 4 is separated from the frame of the box 1 by the locking assembly. Pressure is applied to the other end of the square tube 4, causing the box 1 to tilt around the second support 41 towards the side frame door 11. The second chain 5 is in a taut state under the weight of the goods inside the box 1, and the first chain 3 is in a released state. The end of the connecting rod 2 with the buckle 21 is driven to rotate around the first support 22 under the weight of gravity, so that the buckle 21 is released from the side frame door 11 and the bottom frame of the box 1. The side frame door 11 rotates around the upper pivot under the weight of gravity, so that its lower end is in an open state with the inside of the box 1. The goods are unloaded by themselves in the tilted state.

[0018] In use, a standardized circular logistics vehicle for side-tipping self-unloading cargo is operated by a forklift. The forklift moves the container onto the transport vehicle. At this time, the free end of the square tube 4 is firmly locked to the container frame via a locking assembly. The side frame door 11 is locked by the latch 21 of the connecting rod 2. The first chain 3 is taut and stretched, while the second chain 5 is relaxed and drooping, forming a closed unit. Upon arrival at the destination, the forklift places the container in the unloading area, and the operator releases the locking assembly from the square tube 4. The forklift driver inserts the two steel forks into the square tubes 4 on both sides, applying pressure to the other end of the square tubes 4, causing the free end of the square tubes 4 to move downwards. This action forces the container 1 to tilt towards the side frame door 11, using the second support 41 as a fulcrum. During the tilting process, the first chain 3 connecting the square tube 4 and the connecting rod 2 gradually loosens, losing its tension on the short arm end of the connecting rod 2. Simultaneously, the shift in the center of gravity of the goods inside the container generates a torque, instantly straightening and tightening the second chain 5, stabilizing the tilted posture and providing cushioning. Under its own weight, the long arm end of link 2 (the end with the latch 21) immediately rotates downwards around the first support 22, causing the latch 21 to lift upwards, thus automatically releasing the lock on the lower edge of the side frame door 11. Once the lower edge of the side frame door 11 is unrestrained, it rotates outwards and downwards around the upper pivot under the lateral pressure of the goods and its own weight, forming a wide unloading port. As the tilt angle of the container increases, the bagged materials or bulk materials inside slide quickly out along the opened side frame door under gravity, completing the automatic unloading.

[0019] The container 1 has a standardized rectangular structure, which is suitable for the standardized carrying of various goods and provides a structural foundation for subsequent stacking and storage. The self-locking mechanism and the self-unloading mechanism are linked to achieve automatic unlocking and automatic opening and closing of the side frame door 11 during unloading. There is no need for manual opening and closing of the side frame door 11, which is convenient to operate and avoids the safety hazards caused by manual operation.

[0020] In some embodiments, the connecting rod 2 is rotatably connected to the bottom frame of the housing 1 via a first bracket 22. One end of the connecting rod with a latch 21 is longer than the other end, and the connecting rod 2 has an unequal arm design, with the latch 21 end being the longer arm and the end connected to the first chain 3 being the shorter arm. During unloading, when the first chain 3 loosens, the torque generated by the weight of the longer arm end (latch 21 end) is greater than the torque of the shorter arm end, allowing the connecting rod 2 to rotate in the direction of latch release.

[0021] In some embodiments, the locking assembly 6 includes a hollow horizontal tube 61 fixedly installed on two sets of square tubes 4. A mounting base 611 is fixedly installed on the horizontal tube 61. A pull rod 62 is rotatably connected to the mounting base 611 via a rotating shaft 612. A locking block 621 is fixedly installed on the side of the pull rod 62 near the frame of the housing 1. A locking platform 63 is fixedly installed on the frame of the housing 1 corresponding to the pull rod 62. In the locked state, the locking block 621 is engaged with the locking platform 63. By rotating the pull rod 62 around the rotating shaft 612, the locking block 621 can be released from the locking platform 63.

[0022] In transport mode, the latch 621 on the pull rod 62 hooks onto the locking platform 63 on the side of the box 1, firmly locking the free end of the square tube 4 to the box 1 to prevent it from shaking or accidentally opening during transport. Before unloading, simply pull or rotate the pull rod 62 manually or with the aid of tools to disengage the latch 621 from the locking platform 63 to release the lock on the square tube 4.

[0023] In some embodiments, a torsion spring 613 is sleeved on the rotating shaft 612. One end of the torsion spring 613 is fixedly connected to the mounting base 611, and the other end is fixedly connected to one side of the pull rod 62, for resetting the pull rod 62. The torsion spring 613 provides a resetting torque to the pull rod 62 towards the locked position. When the pull rod 62 is released after unlocking, the torsion spring 613 will automatically pull it back to its original position.

[0024] In some embodiments, the two pull rods 62 are connected by a connecting rod 63 to drive the two sets of self-unloading mechanisms to operate synchronously. The operator only needs to operate from one position to synchronously drive the two pull rods 62 to rotate via the connecting rod 63, achieving simultaneous unlocking or locking of the locking components on both sides. This improves operational efficiency and convenience, and also ensures synchronized force on both sides of the box, resulting in smoother operation.

[0025] In some embodiments, the frame of the housing 1 is rotatably connected to a locking plate 65 by bolts 64. The locking plate 65 is located on one side of the horizontal tube 61. A slot 651 is provided on the side of the locking plate 65 that contacts the hollow part of the horizontal tube 61. When locked, the locking plate 65 is engaged with one side of the horizontal tube 61 through the slot 651 for safety protection. During unloading, the locking plate 65 is first disengaged from one side of the horizontal tube 61. After the locking assembly 6 is locked, the locking plate 65 is rotated down so that its slot 651 engages with the side (or end) of the horizontal tube 61, and then fixed with bolts 64 or pins. In this way, even if the pull rod 62 is accidentally loosened, the locking plate 65 can prevent the horizontal tube 61 (along with the square tube 4) from moving, providing double protection. It provides secondary locking protection to prevent the lever 62 from rotating accidentally during transportation due to bumps and vibrations, thereby preventing the locking block 621 from disengaging from the locking platform 63 and the hollow square tube 4 from loosening, greatly improving transportation safety and preventing goods from falling. It also serves as a protection against accidental operation, requiring the locking plate 65 to be unlocked before the locking component 6 can be unlocked, preventing operators from accidentally touching the lever 62 and causing premature unloading, thus protecting the safety of personnel and goods.

[0026] In some embodiments, a sleeve 42 is fixedly installed on one side of the square tube 4, and a slide rod 421 is slidably connected inside the sleeve 42. A shock-absorbing spring 422 is sleeved on the slide rod 421. One end of the slide rod 421 is connected to the second chain 5, and the shock-absorbing spring 422 is located at the other end of the slide rod 421, which is used to realize shock absorption of the box 1 in the unloading state.

[0027] During unloading, the container 1 tilts around the second support 41. The weight of the cargo causes the container 1 to continue tilting. The second chain 5 is tightened and applies tension to the slide bar 421. The slide bar 421 slides away from the square tube 4 within the sleeve 42, simultaneously compressing the shock-absorbing spring 422. The shock-absorbing spring 422 generates a counter-force, buffering the sliding speed of the slide bar 421, and thus buffering the tilting speed of the container 1 and the impact force of the cargo. When the container 1 returns to its original position, the force of the shock-absorbing spring 422 is released, causing the slide bar 421 to return to its original position, and the second chain 5 returns to a relaxed state. This buffers the instantaneous impact force generated during the initial tilting of the container 1 and the sliding of the cargo, protecting the second chain 5, the second support 41, and the entire container structure, thus extending the service life of the equipment.

[0028] In some embodiments, bases 14 are provided around the bottom of the bottom frame of the box 1, and card plates 12 are provided around the top of the side frame of the box 1. The card plates 12 are inclined outwards, and the bases 14 can be placed on the card plates 12 to realize the stacking of multiple boxes 1. Pull rings 13 are fixedly installed on the outside of the side frame of the box 1 for lifting and moving the box 1.

[0029] During stacking, align the base 14 of the upper container 1 with the pallet 12 of the lower container 1 and slowly lower it. The pallet 12 provides limiting and support for the base 14, preventing the upper container 1 from slipping, thus enabling the stacking of multiple containers. The pull ring 13 is fixed to the outside of the container 1 frame and can be used with a crane hook. During hoisting, the hook is hung on the pull ring 13, and the crane can be started to move the entire container 1 without the need for a forklift 7, adapting to different handling scenarios. This achieves standardized stacking of multiple containers, saving storage and transportation space, improving space utilization, and meeting the large-scale storage needs of circular logistics. The inclined design of the pallet 12 facilitates quick alignment and placement of the base 14 during stacking, improving stacking efficiency. At the same time, it provides reliable limiting and prevents the containers from slipping during stacking, improving stacking safety.

[0030] In some embodiments, a pad 43 is fixedly installed at the bottom of the other end of the square tube 4, and the bottom of the pad 43 is at the same level as the bottom of the base 14. When the vehicle is placed on the ground or other flat surface, the pad 43 and the base 14 simultaneously contact the surface, jointly supporting the weight of the box 1 and the cargo.

[0031] In some embodiments, wheel mounting seats 81 are installed around the bottom of the base frame of the container 1. Wheels 8 are detachably mounted on the wheel mounting seats 81 for moving the container 1. When short-distance manual movement of the container is required (such as warehouse turnover or loading and positioning), the wheels 8 can be installed on the mounting seats 81, turning it into a large "handcart". For long-distance transportation or stacking, the wheels 8 can be removed and directly supported by the base 14.

[0032] In the description of this specification, the references to terms such as "one embodiment," "some embodiments," "illustrative embodiment," "example," "specific example," or "some examples," etc., indicate that a specific feature, structure, material, or characteristic described in connection with that embodiment or example is included in at least one embodiment or example of this application. In this specification, the illustrative expressions of the above terms do not necessarily refer to the same embodiment or example. Furthermore, the specific features, structures, materials, or characteristics described may be combined in any suitable manner in one or more embodiments or examples.

[0033] Although embodiments of this application have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and variations can be made to these embodiments without departing from the principles and spirit of this application, the scope of which is defined by the appended claims and their equivalents.

Claims

1. A standardized circular logistics vehicle for side-tipping self-unloading cargo, characterized in that, The invention includes a logistics vehicle for transporting goods, wherein the logistics vehicle is a rectangular box consisting of a base frame and a frame installed around the base frame, and the upper surface of the box is open for carrying and transporting goods. The box body is provided with a side frame door between the adjacent two side frames. The upper end of the side frame door is rotatably connected to the upper end of the two side frames through a pivot. The lower end of the side frame door is detachably connected to the box body and the bottom frame through two sets of self-locking mechanisms. The self-locking mechanism includes a connecting rod. The connecting rod is rotatably connected to the bottom frame of the box body through a first bracket. A buckle is vertically fixed at one end of the connecting rod for locking the side frame door to the bottom frame of the box body. Two sets of self-unloading mechanisms are fixedly installed at the bottom of the box frame along the central axis. The self-unloading mechanism includes a hollow square tube that is rotatably connected to the bottom of the box frame at one end through a second bracket. The other end of the hollow square tube is adapted to the steel fork on the forklift and is used by the forklift to move the box. The upper side of the other end of the hollow square tube is connected to the side frame corresponding to the side door through a locking component. The bottom of the square tube and the other end of the connecting rod are connected by a first chain, and one side of the square tube is fixedly connected to the bottom frame of the box by a second chain. During the loading, unloading and transportation of goods in the box, the other end of the square tube is locked to the box frame through a locking assembly, and the side frame door is locked to the bottom frame of the box through a latch. The first chain is in a taut state and the second chain is in a released state. When the goods in the box are unloaded through the side frame door, the other end of the square tube is separated from the box frame by a locking assembly. Pressure is applied to the other end of the square tube, causing the box to tilt around the second support towards the side frame door. The second chain is in a taut state under the weight of the goods inside the box, while the first chain is in a released state. The end of the connecting rod with the buckle rotates around the first support under the weight of gravity, causing the buckle to release from the side frame door and the bottom frame of the box. The side frame door rotates around the upper pivot under the weight of gravity, making its lower end open to the inside of the box. The goods are unloaded automatically while tilted.

2. The standardized circular logistics vehicle for side-tipping self-unloading cargo as described in claim 1, characterized in that, The connecting rod is rotatably connected to the bottom frame of the box via the first bracket. The length of the end with the buckle exceeds the length of the other end. The connecting rod has an unequal arm design, with the buckle end being the long arm and the end connected to the first chain being the short arm.

3. The standardized circular logistics vehicle for side-tipping self-unloading cargo as described in claim 1, characterized in that, The locking assembly includes a hollow horizontal tube fixedly installed on two sets of square tubes. A mounting base is fixedly installed on the horizontal tube. A pull rod is rotatably connected to the mounting base via a pivot. A locking block is fixedly installed on the side of the pull rod near the frame of the box. A locking platform is fixedly installed on the frame of the box corresponding to the pull rod. In the locked state, the locking block is engaged on the locking platform. By rotating the pull rod around the pivot, the locking block can be released from the locking platform.

4. The standardized circular logistics vehicle for side-tipping self-unloading cargo as described in claim 3, characterized in that, A torsion spring is sleeved on the rotating shaft. One end of the torsion spring is fixedly connected to the mounting base, and the other end is fixedly connected to one side of the pull rod, which is used to reset the pull rod.

5. A standardized circular logistics vehicle for side-tipping self-unloading cargo as described in claim 3, characterized in that, The two tie rods are connected by a connecting rod to drive the two sets of self-unloading mechanisms to work synchronously.

6. A standardized circular logistics vehicle for side-tipping self-unloading cargo as described in claim 3, characterized in that, The frame of the box is connected to a locking plate by bolts. The locking plate is located on one side of the horizontal tube. A slot is provided on the side of the locking plate that contacts the hollow part of the horizontal tube. When it is in the locked state, the locking plate is engaged with one side of the horizontal tube through the slot for safety protection. When unloading, the locking plate is first disengaged from one side of the horizontal tube.

7. A standardized circular logistics vehicle for side-tipping self-unloading cargo as described in claim 1, characterized in that, A sleeve is fixedly installed on one side of the square tube, and a sliding rod is slidably connected inside the sleeve. A shock-absorbing spring is sleeved on the sliding rod. One end of the sliding rod is connected to the second chain, and the shock-absorbing spring is located at the other end of the sliding rod, which is used to realize shock absorption of the box in the unloading state.

8. A standardized circular logistics vehicle for side-tipping self-unloading cargo as described in claim 1, characterized in that, The bottom of the box frame is provided with bases on all four sides, and the top of the box frame is provided with clips on all four sides. The clips are inclined outwards, and the bases can be placed on the clips to allow multiple boxes to be stacked. Pull rings are fixedly installed on the outer side of the box frame for lifting and moving the boxes.

9. A standardized circular logistics vehicle for side-tipping self-unloading cargo as described in claim 1, characterized in that, A pad is fixedly installed at the bottom of the other end of the square tube, and the bottom of the pad is at the same level as the bottom of the base.

10. A standardized circular logistics vehicle for side-tipping self-unloading cargo according to claim 1, characterized in that, The bottom frame of the box is equipped with wheel mounting bases around its perimeter. Wheels are detachably mounted on the wheel mounting bases to move the box.

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