A detachable cargo bed suitable for a delivery vehicle

Abstract

The utility model relates to the technical field of goods compartment, especially a detachable goods compartment suitable for distribution vehicle, including main beam frame, locking assembly, support plate, drive component, limiting mechanism and guide component, the upper side of main beam frame coaming, bottom plate and top plate, and the side coaming is provided with side door and back door; The locking assembly includes multiple groups and is arranged on the main beam frame; The support plate includes multiple and is rotatably arranged at four corner portions of the main beam frame, and the support leg is slidably arranged on the support plate, and the bottom of support leg is provided with universal wheel; Drive component is arranged on the support plate and drives support leg to slide; The limiting mechanism is arranged on the main beam frame, and the limiting mechanism limits the support plate activity under the working condition; The guide component includes two groups and is arranged at the both sides of the main beam frame respectively, so as to right the goods compartment through the guide component when loading the goods compartment. The utility model can improve the loading and unloading efficiency of goods compartment and vehicle.

Description

Technical Field

[0001] This utility model relates to the field of cargo box technology, and in particular to a detachable cargo box suitable for delivery vehicles. Background Technology

[0002] Delivery vehicles are commonly used tools in the transportation industry, mainly consisting of trucks and cargo compartments. Currently, there are specific requirements for delivery vehicles.

[0003] Traditional delivery vehicles generally suffer from problems such as low loading and unloading efficiency and insufficient space utilization in their cargo compartments. 1. Defects of fixed structure: The welded cargo box is permanently fixed to the vehicle body, resulting in a fuel waste rate of up to 30% during empty return trips (according to data from the China Logistics Society in 2024). 2. Loading and unloading bottleneck: Existing detachable cargo boxes rely on forklift operations, with an average loading and unloading time of 45 minutes, and require a supporting loading and unloading area, as well as the coordination of multiple people.

[0004] Therefore, it is necessary to invent a cargo container that can save labor and improve loading and unloading efficiency. Utility Model Content

[0005] The purpose of this invention is to address the problems existing in the background technology by proposing a detachable cargo box suitable for delivery vehicles.

[0006] The technical solution of this utility model is as follows: a detachable cargo box suitable for delivery vehicles, including a main beam frame, side panels are provided around the main beam frame, side doors and rear doors are provided on the side panels, a bottom plate is provided at the bottom of the main beam frame, and a top plate is provided at the top of the main beam frame. Locking assembly, comprising multiple sets all mounted on the main beam frame, for securing the main beam frame to the delivery vehicle via the locking assembly; Support plates, including multiple support plates, are rotatably mounted at the four corners of the main beam frame. Support legs are slidably mounted on the support plates, and casters are mounted at the bottom of the support legs. A drive assembly is mounted on a support plate and drives the support leg to slide along the height direction of the support plate. The limiting mechanism is installed on the main beam frame and restricts the movement of the support plate when in operation. And a guide assembly, comprising two sets respectively disposed on both sides of the main beam frame, to straighten the cargo box when loading.

[0007] Preferably, a battery pack is installed on the inside of the side panel on the main beam frame, and a photovoltaic panel is installed on the top plate. The photovoltaic panel is electrically connected to the battery pack, and the battery pack is electrically connected to each electrical component.

[0008] Preferably, the top surface of the top plate is curved, and the curvature of the photovoltaic panel is consistent with the curvature of the curved surface.

[0009] Preferably, a control box is installed on the side panel.

[0010] Preferably, the locking assembly includes a movable plate, a pin, and a servo electric cylinder A. The movable plate is mounted on the main beam frame and slides along its height direction. The pin is connected to the bottom surface of the movable plate, passes through the bottom plate, and is slidably connected to it. The body of the servo electric cylinder A is connected to the main beam frame, and the output end of the servo electric cylinder A is connected to the movable plate.

[0011] Preferably, the limiting mechanism includes a spline head and a lead screw; several spline shafts rotatably connected to the main beam are provided on the main beam frame, and each support plate is connected to the spline shaft on the corresponding side. A spline groove coaxial with the spline shaft is provided on the spline shaft; a fixed seat is provided on the main beam frame, and a U-shaped plate that slides along its height direction is provided on the fixed seat. The spline head is connected to one end of the U-shaped plate that extends out of the fixed seat, and the spline head is adapted to the spline groove; the lead screw is rotatably connected to the fixed seat, and the lead screw is threadedly connected to the U-shaped plate. A knob is provided at one end of the lead screw that extends out of the fixed seat, so as to drive the spline head to insert into the spline groove by rotating the lead screw.

[0012] Preferably, the guide assembly includes a guide plate, with a guide ramp at one end of the guide plate away from the rear tailgate, and a plurality of guide wheels spaced apart along its edge to abut against the side of the truck trailer plate via the guide wheels.

[0013] Preferably, the casters are casters with a self-locking function.

[0014] Compared with the prior art, the present invention has the following beneficial technical effects: The detachable cargo box significantly improves cargo box turnover rate. The coordinated structure of support plates, support legs, casters, and drive components reduces reliance on loading and unloading equipment, enabling self-loading and unloading without forklifts. A limiting mechanism quickly locks the four support plates in place, preventing free swinging and improving overall structural stability. Side and rear doors meet the needs of special loading and unloading scenarios such as cold chain logistics. The coordinated structure of guide plates and guide wheels allows for automatic alignment of the cargo box during reverse installation, utilizing the trailer platform and guide wheels. Furthermore, this invention can actively generate power, eliminating the need for a separate power cable and enhancing operational convenience. Attached Figure Description

[0015] Figure 1 This is a schematic diagram of the structure of one embodiment of the present utility model; Figure 2 A schematic diagram of the connection structure of each component on the main beam frame; Figure 3 A schematic diagram of the connection structure between the main beam frame and the support legs; Figure 4This is a schematic diagram of the connection structure between the spline shaft and the limiting mechanism. Figure 5 This is a schematic diagram of the guide component. Reference numerals in the attached diagram: 1. Main beam frame; 2. Side panel; 3. Side door; 4. Rear tail door; 5. Bottom plate; 6. Top plate; 7. Photovoltaic panel; 8. Movable plate; 9. Pin; 10. Servo electric cylinder A; 11. Splined shaft; 111. Splined groove; 12. Support plate; 13. Support leg; 14. Caster wheel; 15. Servo electric cylinder B; 16. Limiting baffle; 17. Fixed seat; 18. U-shaped plate; 19. Splined head; 20. Lead screw; 21. Guide plate; 22. Guide wheel. Detailed Implementation

[0016] Example 1, as Figures 1-5As shown, this utility model proposes a detachable cargo box suitable for delivery vehicles, including a main beam frame 1, a locking assembly, a support plate 12, a drive assembly, a limiting mechanism, and a guide assembly. Side panels 2 are provided around the main beam frame 1, with a control box mounted on each side panel 2. Side doors 3 and a rear tail door 4 are also provided on the side panels 2. A bottom plate 5 is provided at the bottom of the main beam frame 1, and a top plate 6 is provided at the top. The top surface of the top plate 6 is curved. Several splined shafts 11 are rotatably connected to the main beam frame 1, and splined grooves 111 are coaxial with each splined shaft 11. The locking assembly comprises multiple sets, all of which are mounted on the main beam frame 1. The locking assembly includes a movable plate 8, a pin 9, and a servo electric cylinder A10. The movable plate 8 is mounted on the main beam frame 1 and slides along its height direction. The pin 9 is connected to the bottom surface of the movable plate 8 and passes through the bottom plate 5 and is slidably connected to it. The body of the servo electric cylinder A10 is connected to the main beam frame 1, and the output end of the servo electric cylinder A10 is connected to the movable plate 8, so as to fix the main beam frame 1 to the delivery vehicle through the locking assembly. Multiple support plates 12 are included, each connected to a splined shaft 11 on a corresponding side. The support plates 12 are distributed at the four corners of the main beam frame 1. Support legs 13 are slidably mounted on the support plates 12, and casters 14 with self-locking function are provided at the bottom of the support legs 13. Each support leg 13 has at least two casters 14 at its bottom. Several limiting baffles 16 are provided on the main beam frame 1 to limit the maximum rotation angle of the support plates 12. The driving components include, but are not limited to, a servo electric cylinder B15. The body of the servo electric cylinder B15 is mounted on the support plate 12, and the output end of the servo electric cylinder B15 is connected to the support leg 13. The servo electric cylinder B15 drives the support leg 13 to slide along the height direction of the support plate 12. A limiting mechanism is installed on the main beam frame 1. The limiting mechanism includes a spline head 19 and a lead screw 20. A fixed seat 17 is installed on the main beam frame 1, and a U-shaped plate 18 that slides along its height direction is installed on the fixed seat 17. The spline head 19 is connected to one end of the U-shaped plate 18 that extends out of the fixed seat 17, and the spline head 19 is adapted to the spline groove 111. The lead screw 20 is rotatably connected to the fixed seat 17 and threadedly connected to the U-shaped plate 18. A knob is installed at one end of the lead screw 20 that extends out of the fixed seat 17, so that rotating the lead screw 20 drives the spline head 19 to insert into the spline groove 111. The limiting mechanism restricts the movement of the support plate 12 in the working state. The guide assembly includes two sets and is respectively set on both sides of the main beam frame 1. The guide assembly includes a guide plate 21. A guide slope is provided at the end of the guide plate 21 away from the rear tail door 4. Several guide wheels 22 are arranged at intervals along the edge of the guide plate 21 so that the guide wheels 22 abut against the side of the truck trailer plate, so that the cargo box is straightened when loading the cargo box by the guide assembly.

[0017] It should be noted that this technical solution also includes a control panel, which uses a combination of HMI (Human Machine Interface) and PLC (Programmable Logic Controller). The HMI provides users with an intuitive and user-friendly interface, allowing them to easily issue various commands by touching the screen.

[0018] In this embodiment, the detachable cargo box of this utility model is designed to achieve rapid, smooth, and safe transfer of the cargo box between the delivery vehicle and the ground, and to possess short-distance autonomous movement capability, thereby greatly improving the flexibility of logistics distribution and loading and unloading efficiency. The working principle of the entire system can be broken down into the following key stages and coordinated actions: I. Attachment and Release of the Cargo Box to the Vehicle: In transport mode, the entire cargo box is securely fixed to the chassis of the delivery vehicle via locking components. The core actuator in this process is the servo electric cylinder A10. When locking the cargo box is required, the servo electric cylinder A10 is activated, its output shaft extends, and pushes the connected movable plate 8 downwards. The movable plate 8 slides vertically down along the guide structure on the main beam frame 1, causing the pin 9 fixed at its bottom to move downwards synchronously. The pin 9 penetrates the pre-drilled hole on the bottom plate 5 and finally precisely inserts into the pre-set locking hole on the vehicle chassis. This process is equivalent to "nailing" the cargo box to the vehicle with multiple powerful mechanical pins, ensuring absolute stability during operation. Conversely, when unloading is required, the servo electric cylinder A10 reverses, its output shaft retracts, and pulls the movable plate 8 and pin 9 upwards, causing the pin 9 to completely exit the locking hole on the vehicle chassis, thereby releasing the main mechanical connection between the cargo box and the vehicle, preparing for subsequent operations. II. Landing and Support of the Cargo Box: After the cargo box is separated from the vehicle, a reliable mechanism is needed to ensure its smooth landing. This function is accomplished by the flip-up support plate 12, the retractable support legs 13, and their drive components. Deployment of the support plate: The support plate 12 is connected to the main beam frame 1 via the spline shaft 11. When the cargo box is fixed to the vehicle, the support plate 12 is usually in a folded state, close to the side of the cargo box to save space. When it is necessary to unload the cargo box, the operator issues a command through the control box. First, the rotation restriction on the spline shaft 11 needs to be released, that is, the knob is rotated in the opposite direction. The lead screw 20 drives the spline head 19 to exit from the spline groove 111, releasing the rotation constraint on the spline shaft 11. The support plate 12 can then be freely flipped, allowing it to flip outwards. The support plate 12 rotates around the spline shaft 11, like opening the four "legs" of the box, until it is blocked by the preset limit baffle 16 on the main beam frame 1. The limit baffle 16 precisely controls the final flip angle of the support plate 12, ensuring that the four support points can symmetrically and stably support the cargo box. The operator then rotates the knob at one end of the lead screw 20. The lead screw 20 is threaded into the fixed seat 17, converting the rotational motion into linear motion. This pushes the U-shaped plate 18 and its spline head 19 toward the spline shaft 11 until the spline head 19 is firmly inserted into the spline groove 111. This action is equivalent to locking the spline shaft 11, preventing it from rotating, thus completely restricting the movement of the support plate 12 connected to it and ensuring the stability of the overall structure. Extension and grounding of the support legs: After the support plate 12 is flipped into place and locked, the next step is to adjust the height of the support legs 13 so that the cargo box makes smooth contact with the ground. The servo electric cylinder B15 in the drive assembly starts to work. Its body is fixed on the support plate 12, and its output end is connected to the support leg 13. The output shaft of the servo electric cylinder B15 extends, pushing the support leg 13 to slide down along the guide rail on the support plate 12. The casters 14 at the bottom of the support leg 13 gradually approach and finally contact the ground. Since each support leg 13 is equipped with no less than two casters 14 at the bottom, and these casters 14 all have a self-locking function, this allows the cargo box to be moved easily after landing, and can also be locked by locking the casters 14 when it needs to be stationary to prevent accidental rolling, ensuring stability during loading and unloading operations; III. Cargo Box Movement and Precise Positioning: The cargo box moves on the ground using the casters 14 at the bottom of the support legs 13. Operators can easily push the cargo box to the target position. In the crucial step of reloading the cargo box back onto the vehicle trailer, the guide assembly plays an indispensable auxiliary positioning role. The guiding assembly mainly consists of a guide plate 21 with a guide ramp and a series of guide wheels 22 along its edge. When the cargo box is pushed towards the rear of the vehicle, even if there is a certain lateral deviation in the initial position, the guide ramp at the front end of the guide plate 21 will first contact the edge of the vehicle's trailer. Under continuous thrust, the ramp will convert the lateral offset force into a force guiding the cargo box to correct its lateral alignment. Next, the guide wheels 22 will roll into contact with the side of the trailer, allowing the cargo box to slide slightly laterally with extremely low friction, while simultaneously constraining it to move in a straight line along the side of the trailer. This series of actions acts like an automatic correction system, effectively "straightening" the cargo box and guiding it precisely into the predetermined position on the vehicle chassis, greatly reducing docking difficulty and improving loading efficiency.

[0019] Example 2, as Figure 1 As shown, the present invention proposes a detachable cargo box suitable for delivery vehicles. Compared with Embodiment 1, a battery pack is installed on the inner side of the side panel 2 on the main beam frame 1, and a photovoltaic panel 7 is installed on the top plate 6. The photovoltaic panel 7 is electrically connected to the battery pack, and the battery pack is electrically connected to each electrical component.

[0020] In this embodiment, the photovoltaic panel 7 generates electricity when the cargo compartment is idle and stores the electricity in the battery pack, which allows the battery pack to directly power the various electrical components on the cargo compartment. This structure is particularly suitable for cargo compartments that are centrally stored in outdoor areas, avoiding the need for wiring and further improving operational convenience.

[0021] The embodiments of the present invention have been described in detail above with reference to the accompanying drawings. However, the present invention is not limited thereto. Various changes can be made within the scope of knowledge possessed by those skilled in the art without departing from the spirit of the present invention.

Claims

1. A detachable cargo box suitable for delivery vehicles, characterized in that, include: The main beam frame (1) is provided with side panels (2) on all four sides, and side doors (3) and rear doors (4) are provided on the side panels (2). The bottom plate (5) is provided at the bottom of the main beam frame (1), and the top plate (6) is provided at the top of the main beam frame (1). Locking assembly, comprising multiple sets and all disposed on the main beam frame (1), for fixing the main beam frame (1) to the delivery vehicle by means of the locking assembly; Support plate (12), the support plate (12) includes multiple and is rotatably set at the four corners of the main beam frame (1), support legs (13) are slidably set on the support plate (12), and universal wheels (14) are set at the bottom of the support legs (13). A drive assembly is provided on the support plate (12) and drives the support leg (13) to slide along the height direction of the support plate (12); The limiting mechanism is installed on the main beam frame (1) and restricts the movement of the support plate (12) when it is in operation. And a guide assembly, comprising two sets respectively disposed on both sides of the main beam frame (1) to straighten the cargo box when loading the cargo box by means of the guide assembly.

2. A detachable cargo box suitable for delivery vehicles according to claim 1, characterized in that, A battery pack is installed on the inside of the side panel (2) on the main beam frame (1), and a photovoltaic panel (7) is installed on the top plate (6). The photovoltaic panel (7) is electrically connected to the battery pack, and the battery pack is electrically connected to each electrical component.

3. A detachable cargo box suitable for delivery vehicles according to claim 2, characterized in that, The top surface of the top plate (6) is curved, and the curvature of the photovoltaic panel (7) is consistent with the curvature of the curved surface.

4. A detachable cargo box suitable for delivery vehicles according to claim 1, characterized in that, A control box is installed on the side panel (2).

5. A detachable cargo box suitable for delivery vehicles according to claim 1, characterized in that, The locking assembly includes a movable plate (8), a pin (9), and a servo electric cylinder A (10). The movable plate (8) is mounted on the main beam frame (1) and slides along its height direction. The pin (9) is connected to the bottom surface of the movable plate (8). The pin (9) passes through the bottom plate (5) and is slidably connected to it. The body of the servo electric cylinder A (10) is connected to the main beam frame (1), and the output end of the servo electric cylinder A (10) is connected to the movable plate (8).

6. A detachable cargo box suitable for delivery vehicles according to claim 1, characterized in that, The limiting mechanism includes a spline head (19) and a lead screw (20); a number of spline shafts (11) are rotatably connected to the main beam frame (1), and each support plate (12) is connected to the spline shaft (11) on the corresponding side. A spline groove (111) is provided on the spline shaft (11) coaxial with it; a fixed seat (17) is provided on the main beam frame (1), and a U-shaped plate (18) that slides along its height direction is provided on the fixed seat (17). The spline head (19) is connected to one end of the U-shaped plate (18) that extends out of the fixed seat (17), and the spline head (19) is adapted to the spline groove (111); the lead screw (20) is rotatably connected to the fixed seat (17), and the lead screw (20) is threadedly connected to the U-shaped plate (18). A knob is provided at one end of the lead screw (20) that extends out of the fixed seat (17) so that the spline head (19) can be driven to insert into the spline groove (111) by rotating the lead screw (20).

7. A detachable cargo box suitable for delivery vehicles according to claim 1, characterized in that, The guide assembly includes a guide plate (21), with a guide ramp at one end of the guide plate (21) away from the rear tailgate (4), and a number of guide wheels (22) spaced along its edge on the guide plate (21) so as to abut against the side of the truck trailer plate through the guide wheels (22).

8. A detachable cargo box suitable for delivery vehicles according to claim 1, characterized in that, The universal wheel (14) is a universal wheel with a self-locking function.

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