Aluminum alloy box body for new energy truck

Abstract

The application relates to the aluminum alloy processing technical field and discloses a new energy truck aluminum alloy box body, which comprises a detachable truck box frame, the truck box frame comprises aluminum alloy side plates spliced through supports, triangular irons are arranged at the corner positions of the supports, rotatable inner frames are arranged on the aluminum alloy side plates, a traction assembly for driving the inner frames to rotate is further arranged in the truck box frame, the traction assembly comprises matched extension plates and rollers, and a sliding cylinder is slidably arranged on a vertical column; the truck box frame further comprises a bottom plate, a limiting assembly for fixing the inner frames is arranged on the periphery of the bottom plate, the limiting assembly comprises a limiting pin sleeved in a limiting cylinder, a limiting spring and a limiting rope are connected to the bottom end of the limiting pin, the other end of the limiting rope penetrates through the limiting cylinder and is connected to a cylinder, a suspension spring is arranged on the sliding cylinder, and the roller is not in contact with the extension plate when the inner frame is in a vertical state. Compared with the prior art, the application solves the problems such as low truck box unloading efficiency.

Description

An aluminum alloy box for new energy trucks Technical Field

[0001] This invention relates to the field of aluminum alloy processing technology, specifically to an aluminum alloy box body for new energy trucks. Background Technology

[0002] The cargo box is a crucial component of a truck, serving as a key structure for cargo transportation. It is widely used in logistics and express delivery, supermarkets, and factories. The cargo box of a van is typically constructed by welding or hinged together a floor, left and right side panels, front panel, rear panel, and roof. Common van models include minivans, medium-sized vans, and large container vans. To reduce the overall weight distribution of the cargo box, aluminum alloy materials are increasingly being used.

[0003] In the prior art, Chinese patent document CN214524098U discloses a universal box body for a liftable van. Logistics workers manually control the lifting drive mechanism to achieve the vertical movement of the upper box relative to the lower box. By changing the rated volume of the box body, it meets the transfer needs of different sized vans. The box roof curtain mechanism includes an aluminum alloy track, a waterproof sheet, a front fixed crossbeam for the box roof curtain, a roof crossbar bearing bracket, and a roof crossbar. The box roof curtain folds and opens flexibly on the aluminum alloy track via the roof crossbar, facilitating the lifting and unloading of heavy items. However, in… In actual use, side doors still need to be installed on the side walls of the cargo box to facilitate loading and unloading of goods. Although installing side doors makes it easier to pick up and put down goods, they still need to be opened manually during actual operation. This not only wastes time, but also may cause injury to personnel due to the tilting of goods inside the cargo box. In addition, when the existing cargo boxes are installed by splicing, the corners of the splicing are not reinforced, and the strength of the cargo box needs to be improved. Therefore, this application discloses an aluminum alloy box body for new energy trucks to meet the convenient use requirements of new energy truck cargo boxes. Summary of the Invention

[0004] (a) Technical problems to be solved

[0005] To address the shortcomings of existing technologies, this invention provides an aluminum alloy cargo box for new energy trucks, which has advantages such as rapid loading and unloading of goods, and solves a series of problems such as low loading and unloading efficiency of truck cargo boxes.

[0006] (II) Technical Solution

[0007] To achieve the above objectives, the present invention provides the following technical solution: an aluminum alloy cargo box for a new energy truck, comprising a detachable cargo box frame, the cargo box frame comprising vertical aluminum alloy side plates spliced ​​together by multiple brackets around its perimeter, with the same triangular iron clamped at the corner positions of three adjacent brackets, wherein each of the two aluminum alloy side plates is provided with a rotatable inner frame, and the cargo box frame is further provided with a traction assembly for driving the inner frame to rotate, the traction assembly comprising a matching extension plate and rollers, and a slide cylinder slidably clamped on a vertical column, the rollers being connected to the slide cylinder. The traction assembly further includes a traction steel cable connected to the slide cylinder, the other end of which is connected to the cylinder; the cargo box frame further includes a base plate installed at the bottom of the plurality of brackets, and a limiting assembly for fixing the inner frame is provided around the base plate. The limiting assembly includes a limiting pin sleeved in a limiting cylinder, the bottom end of which is connected to a limiting spring and a limiting rope, the other end of which passes through the limiting cylinder and is connected to the cylinder, and the slide cylinder is provided with a suspension spring. When the inner frame is in a vertical state, the roller does not contact the extension plate.

[0008] Preferably, the brackets are arranged at the four corners of the base plate, and the brackets are provided with slots. The aluminum alloy side plates are slidably locked in the corresponding slots, and a bottom frame is installed at the bottom of the base plate.

[0009] Preferably, the cargo box frame further includes an aluminum alloy top plate installed on the top of the plurality of brackets. The aluminum alloy top plate is snapped into the corresponding slot, and the aluminum alloy top plate is provided with a plurality of protrusions arranged in a zigzag pattern. The bottom of the aluminum alloy top plate is provided with a support rod, and the two ends of the support rod are attached to the bracket on the corresponding side.

[0010] Preferably, hinges are installed on both sides of the aluminum alloy side plates, the top of the inner frame is connected to the corresponding hinge, a side skirt is installed on the side wall of the bottom frame, the side skirt is provided with a groove, the inner frame is in contact with one side inner wall of the groove in a vertical state, and the side skirt and the bottom of the corresponding side of the inner frame are provided with multiple sets of threaded holes in corresponding positions.

[0011] Preferably, the extension plate is fixedly installed on one side of the inner wall of the inner frame, and a plurality of evenly distributed reinforcing ribs are provided between the extension plate and the inner frame. The two ends of the vertical column are respectively connected to the bottom plate and the aluminum alloy top plate, and the vertical column is arranged at the four corners of the cargo box frame.

[0012] Preferably, the vertical column is hollow and has a vertical guide groove. A guide protrusion is fixedly connected to the inner wall of the slide cylinder. The guide protrusion is slidably engaged in the corresponding vertical guide groove. The roller is rotatably mounted on the slide cylinder and located above the extension plate.

[0013] Preferably, the bottom end of the slide is fixedly connected to a coaxially arranged fixed plate, one end of a plurality of traction steel cables at the same relative position is connected to the corresponding fixed plate, and the other end of the plurality of traction steel cables passes through the vertical column and extends into the vertical column. One end of the traction steel cables is fixedly connected to the telescopic end of the cylinder.

[0014] Preferably, a fixing plate is fixedly sleeved at the top of the vertical column, the suspension spring is sleeved on the corresponding vertical column, and the two ends of the suspension spring are respectively connected to the top of the corresponding fixing plate and the top of the slide cylinder.

[0015] Preferably, the limiting cylinder is installed on the corresponding side skirt, the limiting pin is slidably sleeved in the corresponding limiting cylinder, the bottom end of the limiting cylinder is also provided with a round hole, one end of the limiting rope is fixedly connected to the corresponding limiting pin, the other end of the limiting rope passes through the corresponding round hole and is connected to the telescopic end of the cylinder, and the two ends of the limiting spring are respectively connected to the bottom end of the limiting pin and the bottom side wall of the corresponding limiting cylinder.

[0016] Preferably, both the aluminum alloy side plate and the inner frame are provided with a plurality of evenly distributed hollow grooves, and the hollow grooves are further provided with reinforcing ribs for improving the support strength of the aluminum alloy side plate or the inner frame.

[0017] (III) Beneficial Effects

[0018] Compared with the prior art, the present invention provides an aluminum alloy box body for new energy trucks, which has the following beneficial effects:

[0019] 1. This new energy truck uses an aluminum alloy box body. By controlling the operation of the cylinder, its telescopic end retracts, thereby pulling multiple traction steel cables to move. Then, the sliding cylinders at the four corners are pulled downward under the guidance of the vertical guide groove until the rollers contact the extension plate on the same side. With the continuous movement of the traction steel cables, the sliding cylinders drive the rollers to continue to move downward, thereby causing the extension plate to drive the inner frame on the corresponding side to rotate around the corresponding hinge axis, completing the synchronous unfolding of the inner frames on both sides. Compared with the traditional method of installing side doors, it can not only realize the rapid unfolding of the cargo box and facilitate loading and unloading of goods, but also prevent injury to the handling personnel caused by the tipping of goods in the cargo box, thus improving the safety of the cargo box. Similarly, in this application, the inner frame can be rotated and installed on the aluminum alloy side plate at the rear of the cargo box instead of the tail door, and a similar steel cable traction method can be used to simultaneously unfold the three sides of the cargo box. Of course, one end of the traction steel cable can also be connected to the tail door position, so that while unfolding the tail door, the other side walls of the cargo box can also be unfolded simultaneously through the linkage of the traction steel cable, improving the loading and unloading efficiency of goods.

[0020] 2. The aluminum alloy box of this new energy truck uses the tension of the suspension spring to make the slide cylinder drive the corresponding roller to be above the extension plate on the same side and there is a gap between them. When the cylinder runs, the limit rope and the traction steel cable move synchronously, which causes the limit pin to slide down first into the corresponding limit cylinder. At this time, the limit spring is compressed and stored. When the limit pin is fully inserted into the limit cylinder, the fixing effect on the inner frame is released. Then, the roller contacts the extension plate and continues to roll and squeeze, driving the inner frame on the corresponding side to rotate. In this way, the overall sealing and stability of the cargo box can be improved while keeping the inner frame vertical, and the cargo box can be stably unfolded, which improves the practicality of the entire truck cargo box.

[0021] 3. The aluminum alloy box body of this new energy truck reduces the overall weight of the inner frame by setting hollow aluminum alloy side panels. Combined with the reinforcing ribs on the extension plate, the torque on the inner frame when the extension plate rotates is reduced, thus reducing the load on the cylinder. The reinforcing ribs also improve the overall strength of the aluminum alloy side panels, providing better support and protection in the event of a cargo box rollover or other dangerous situations. Attached Figure Description

[0022] Figure 1 is a first-view three-dimensional structural schematic diagram of the present invention;

[0023] Figure 2 is a schematic diagram of the three-dimensional structure of the present invention from a second perspective.

[0024] Figure 3 is a three-dimensional structural diagram of the present invention with the aluminum alloy top plate removed;

[0025] Figure 4 is a three-dimensional structural diagram of the present invention with the aluminum alloy top plate and tailgate removed;

[0026] Figure 5 is an enlarged structural schematic diagram of point A in Figure 4 of the present invention;

[0027] Figure 6 is a three-dimensional structural diagram of the cargo box frame of the present invention;

[0028] Figure 7 is a schematic diagram of the three-dimensional structure of some aluminum alloy side plates of the present invention.

[0029] In the diagram: 1. Bracket; 2. Triangle iron; 3. Base frame; 4. Aluminum alloy side plate; 5. Aluminum alloy top plate; 6. Support rod; 7. Inner frame; 8. Hinge; 9. Side skirt; 10. Extension plate; 11. Reinforcing rib; 12. Vertical column; 13. Vertical guide groove; 14. Slide cylinder; 15. Roller; 16. Fixing plate; 17. Traction cable; 18. Cylinder; 19. Suspension spring; 20. Limiting cylinder; 21. Limiting pin; 22. Hollow groove; 23. Reinforcing rib. Detailed Implementation

[0030] The technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0031] As described in the background section, there are shortcomings in the existing technology. In order to solve the above-mentioned technical problems, this application proposes an aluminum alloy box body for new energy trucks.

[0032] In a typical embodiment of this application, as shown in Figures 1-7, an aluminum alloy box body for a new energy truck includes a detachable cargo box frame. The cargo box frame includes vertical aluminum alloy side plates 4 spliced ​​around its perimeter by multiple brackets 1. A common triangular iron 2 is engaged at the corner positions of three adjacent brackets 1. Rotatable inner frames 7 are provided on both sides of the aluminum alloy side plates 4. A traction assembly for driving the inner frames 7 to rotate is also provided inside the cargo box frame. The traction assembly includes a matching extension plate 10 and rollers 15, as well as a sliding locking mechanism. The slide cylinder 14 is mounted on the vertical column 12, and the roller 15 is connected to the slide cylinder 14. The traction assembly also includes a traction steel cable 17 connected to the slide cylinder 14, and the other end of the traction steel cable 17 is connected to the cylinder 18. The cargo box frame also includes a base plate installed at the bottom of multiple brackets 1. The periphery of the base plate is provided with a limiting assembly for fixing the inner frame 7. The limiting assembly includes a limiting pin 21 sleeved in the limiting cylinder 20. The bottom end of the limiting pin 21 is connected to a limiting spring and a limiting rope. The other end of the limiting rope passes through the limiting cylinder 20 and is connected to the cylinder 18. 8. The slide cylinder 14 is equipped with a suspension spring 19. When the inner frame 7 is in a vertical state, the roller 15 does not contact the extension plate 10. When assembling the entire truck cargo box, first install the brackets 1 at multiple positions, then slide the aluminum alloy side plate 4 on the corresponding side onto the corresponding bracket 1, and finally engage the triangular iron 2 at the corner with the ends of the three adjacent brackets 1. In this way, not only can the truck cargo box be quickly assembled and convenient to use, but the connection strength of the entire truck cargo box can also be strengthened by the fixing effect of the triangular iron 2. In addition, when loading and unloading goods, by controlling the operation of the traction component, the inner frames 7 on both sides are rotated synchronously, thereby making it easier to pick up and put down goods. While improving the convenience, it can also effectively avoid the accidental injury caused by the tipping of goods in the cargo box when the traditional side door setting method is opened. In addition, by setting a limit component that runs sequentially with the traction component, it can fix the inner frame 7 and aluminum alloy side plate 4 when the cargo box is kept in a "closed" state, and can also simultaneously take into account the flipping operation of the inner frame 7.

[0033] As a preferred embodiment of this invention, referring to Figures 1-4, the bracket 1 is arranged at the four corners of the base plate, and the bracket 1 has slots. The aluminum alloy side plates 4 are slidably locked in the corresponding slots. The bottom frame 3 is installed at the bottom of the base plate. The cargo box frame also includes an aluminum alloy top plate 5 installed on the top of multiple brackets 1. The aluminum alloy top plate 5 is locked in the corresponding slots, and the aluminum alloy top plate 5 has multiple protrusions arranged in a zigzag pattern. The bottom of the aluminum alloy top plate 5 is provided with a support rod 6, and the two ends of the support rod 6 are connected to the bracket 1 on the corresponding side. By using aluminum alloy side plates 4 and aluminum alloy top plates 5, the overall weight of the truck cargo box is reduced. Compared with the traditional flat top plate structure, the aluminum alloy top plate 5 with an overall zigzag pattern improves the support strength of the top plate and can provide a stronger support and protection effect for the cargo box when it overturns.

[0034] As a preferred embodiment of this invention, referring to Figures 4-6, hinges 8 are installed on both sides of the aluminum alloy side plates 4. The top of the inner frame 7 is connected to the corresponding hinge 8. Side skirts 9 are also installed on the side walls of the bottom frame 3. The side skirts 9 have grooves. When the inner frame 7 is vertical, it fits against one side of the inner wall of the groove. The bottom ends of the side skirts 9 and the corresponding side inner frame 7 are provided with multiple sets of threaded holes in corresponding positions. By setting the threaded holes, the inner frame 7 can be completely fixed by bolts. It is used in conjunction with the tailgate at the rear of the cargo box, which not only meets the needs of daily use, but also improves the overall strength of the cargo box. The extension plate 10 is fixedly installed on one side of the inner wall of the inner frame 7. Furthermore, multiple evenly distributed reinforcing ribs 11 are provided between the extension plate 10 and the inner frame 7. The two ends of the vertical column 12 are respectively connected to the bottom plate and the aluminum alloy top plate 5, and the vertical column 12 is arranged at the four corners of the cargo box frame. The vertical column 12 is hollow and has a vertical guide groove 13. A guide protrusion is fixedly connected to the inner wall of the slide cylinder 14. The guide protrusion is slidably locked in the corresponding vertical guide groove 13. The roller 15 is rotatably mounted on the slide cylinder 14 and located above the extension plate 10. A coaxially arranged fixed plate 16 is fixedly connected to the bottom end of the slide cylinder 14. One end of multiple traction steel cables 17 at the same relative position is connected to the corresponding fixed plate 16. On the fixed plate 16, the other ends of multiple traction cables 17 all pass through the vertical column 12 and extend into the vertical column 12. One end of each traction cable 17 is fixedly connected to the telescopic end of the cylinder 18. When rapid loading and unloading of goods is required, the cylinder 18 is controlled to operate, causing its telescopic end to retract, thereby pulling multiple traction cables 17 to move. Then, the sliding cylinders 14 at the four corners are pulled downward under the guidance of the vertical guide groove 13 until the rollers 15 contact the extension plate 10 on the same side. With the continuous movement of the traction cables 17, the sliding cylinders 14 drive the rollers 15 to continue to move downward, thereby causing the extension plate 10 to drive the inner frame 7 on the corresponding side to rotate around the corresponding hinge 8, completing the process. The inner frames 7 on both sides unfold simultaneously. Compared with the traditional method of installing side doors, this not only enables the cargo box to unfold quickly and facilitates loading and unloading of goods, but also prevents injury to handling personnel caused by the cargo box tipping over, thus improving the safety of the cargo box. Similarly, in this application, the inner frames 7 can be rotated and installed on the aluminum alloy side plates 4 at the rear of the cargo box to replace the tail door, and a similar steel cable traction method can be used to unfold the three sides of the cargo box simultaneously. Of course, one end of the traction steel cable 17 can also be connected to the tail door position. In this way, while unfolding the tail door, the other side walls of the cargo box can also be unfolded simultaneously through the linkage of the traction steel cable 17, thereby improving the loading and unloading efficiency of goods.

[0035] As a preferred embodiment of this invention, referring to Figures 3-6, a fixing plate is fixedly sleeved at the top of the vertical column 12, a suspension spring 19 is sleeved on the corresponding vertical column 12, and the two ends of the suspension spring 19 are respectively connected to the corresponding fixing plate and the top of the slide cylinder 14. The limiting cylinder 20 is installed on the corresponding side skirt 9, the limiting pin 21 is slidably sleeved in the corresponding limiting cylinder 20, and a round hole is opened at the bottom end of the limiting cylinder 20. One end of the limiting rope is fixedly connected to the corresponding limiting pin 21, and the other end of the limiting rope passes through the corresponding round hole and is connected to the telescopic end of the cylinder 18. The two ends of the limiting spring are respectively connected to the bottom end of the limiting pin 21 and the bottom side wall of the corresponding limiting cylinder 20. In the natural state, the limiting pin 21 extending outside the limiting cylinder 20 controls the movement of the cylinder. The inner frame 7 on the same side is limited. Through the tension of the suspension spring 19, the slide cylinder 14 drives the corresponding roller 15 to be above the extension plate 10 on the same side and there is a gap between them. When the cylinder 18 runs, the limiting rope and the traction steel cable 17 move synchronously, so that the limiting pin 21 slides down into the corresponding limiting cylinder 20 first. At this time, the limiting spring is compressed and stored. When the limiting pin 21 is completely inside the limiting cylinder 20, the fixing effect on the inner frame 7 is released. Then, the roller 15 contacts the extension plate 10 and continues to roll and squeeze, driving the inner frame 7 on the corresponding side to rotate. In this way, the overall sealing and stability of the cargo box can be improved while the inner frame 7 is kept vertical, and the cargo box can be stably unfolded, improving the practicality of the entire truck cargo box.

[0036] As a preferred embodiment of this invention, referring to Figure 7, multiple evenly distributed hollow grooves 22 are provided on both the aluminum alloy side plate 4 and the inner frame 7. The hollow grooves 22 are also provided with reinforcing ribs 23 to improve the support strength of the aluminum alloy side plate 4 or the inner frame 7. By setting the aluminum alloy side plate 4 in a hollow state, the overall weight of the inner frame 7 is reduced. In conjunction with the reinforcing ribs 11 on the extension plate 10, the torque received by the extension plate 10 when it drives the inner frame 7 to rotate is reduced, thus reducing the load on the cylinder 18. The reinforcing ribs 23 improve the overall strength of the aluminum alloy side plate 4, providing better support and protection in the event of a dangerous situation such as the cargo box tipping over.

[0037] The working principle of this invention is as follows: When rapid loading and unloading of goods is required, the control cylinder 18 is activated, causing its telescopic end to retract. This, in turn, pulls multiple traction cables 17 to move, which in turn pulls the sliding cylinders 14 at the four corners downwards under the guidance of the vertical guide grooves 13, until the rollers 15 contact the extension plates 10 on the same side. With the continuous movement of the traction cables 17, the sliding cylinders 14 drive the rollers 15 to continue moving downwards, thereby causing the extension plates 10 to drive the corresponding inner frames 7 to rotate around the corresponding hinges 8, completing the synchronous unfolding of the inner frames 7 on both sides. Compared with the traditional method of installing side doors, this method not only achieves... The quick unfolding of the cargo box facilitates loading and unloading of goods and prevents injury to handling personnel from the tipping of goods inside the box, thus improving the safety of the cargo box. Similarly, in this application, the inner frame 7 can be rotated and installed on the aluminum alloy side plate 4 at the rear of the cargo box to replace the tail door, and a similar steel cable traction method can be used to unfold the three sides of the cargo box simultaneously. Of course, one end of the traction steel cable 17 can also be connected to the tail door position, so that while unfolding the tail door, the other side walls of the cargo box can also be unfolded simultaneously through the linkage of the traction steel cable 17, thereby improving the loading and unloading efficiency of goods.

[0038] In its natural state, the inner frame 7 on the same side is limited by the limiting pin 21 extending outside the limiting cylinder 20. The tension of the suspension spring 19 causes the slide cylinder 14 to drive the corresponding roller 15 to be positioned above the extension plate 10 on the same side and to have a gap between them. When the cylinder 18 is running, the limiting rope and the traction cable 17 move synchronously, causing the limiting pin 21 to slide down into the corresponding limiting cylinder 20 first. At this time, the limiting spring is compressed and stored. When the limiting pin 21 is fully inserted into the limiting cylinder 20, the fixing effect on the inner frame 7 is released. Then, the roller 15 contacts the extension plate 10 and continues to roll and squeeze, causing the inner frame 7 on the corresponding side to rotate. In this way, the overall sealing and stability of the cargo box can be improved while the inner frame 7 is kept vertical, and the cargo box can be stably unfolded, improving the practicality of the entire truck cargo box.

[0039] Although embodiments of the invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. An aluminum alloy box body for a new energy freight vehicle, characterized in that: The container includes a detachable cargo box frame, which comprises vertical aluminum alloy side plates (4) spliced ​​together by multiple brackets (1) around its perimeter. The corner positions of three adjacent brackets (1) are each fitted with the same triangular iron (2). Each of the two aluminum alloy side plates (4) is provided with a rotatable inner frame (7). The cargo box frame is also provided with a traction assembly for driving the inner frame (7) to rotate. The traction assembly includes a matching extension plate (10) and rollers (15), as well as a slide cylinder (14) slidably mounted on a vertical column (12). The rollers (15) are connected to the slide cylinder (14). The traction assembly also includes a traction steel rod connected to the slide cylinder (14). The other end of the traction cable (17) is connected to the cylinder (18); the cargo box frame also includes a base plate installed at the bottom of the multiple brackets (1), the periphery of the base plate is provided with a limiting component for fixing the inner frame (7), the limiting component includes a limiting pin (21) sleeved in the limiting cylinder (20), the bottom end of the limiting pin (21) is connected to a limiting spring and a limiting rope, the other end of the limiting rope passes through the limiting cylinder (20) and is connected to the cylinder (18), and the slide cylinder (14) is provided with a suspension spring (19), when the inner frame (7) is in a vertical state, the roller (15) does not contact the extension plate (10).

2. The aluminum alloy box body for a new energy freight vehicle according to claim 1, characterized in that: The bracket (1) is arranged at the four corners of the base plate, and the bracket (1) is provided with a slot. The aluminum alloy side plates (4) are respectively slidably locked in the corresponding slots. The bottom frame (3) is installed at the bottom of the base plate.

3. The aluminum alloy box body for a new energy freight vehicle according to claim 2, characterized in that: The cargo box frame also includes an aluminum alloy top plate (5) installed on the top of multiple brackets (1). The aluminum alloy top plate (5) is fitted into the corresponding slot, and the aluminum alloy top plate (5) is provided with multiple protrusions arranged in a zigzag pattern. The bottom of the aluminum alloy top plate (5) is provided with a support rod (6), and the two ends of the support rod (6) are attached to the bracket (1) on the corresponding side.

4. The aluminum alloy box body for a new energy truck according to claim 3, characterized in that: Hinges (8) are installed on both sides of the aluminum alloy side plates (4). The top of the inner frame (7) is connected to the corresponding hinge (8). A side skirt (9) is also installed on the side wall of the bottom frame (3). A groove is provided on the side skirt (9). The inner frame (7) is in vertical position and fits against the inner wall of one side of the groove. The side skirt (9) and the bottom of the corresponding side inner frame (7) are provided with multiple sets of threaded holes with corresponding positions.

5. The aluminum alloy box body for a new energy truck according to claim 4, characterized in that: The extension plate (10) is fixedly installed on one side of the inner wall of the inner frame (7), and a plurality of evenly distributed reinforcing ribs (11) are provided between the extension plate (10) and the inner frame (7). The two ends of the vertical column (12) are respectively connected to the bottom plate and the aluminum alloy top plate (5), and the vertical column (12) is arranged at the four corners of the cargo box frame.

6. The aluminum alloy box body for a new energy freight vehicle according to claim 5, characterized in that: The vertical column (12) is hollow and a vertical guide groove (13) is provided on the vertical column (12). A guide protrusion is fixedly connected to the inner wall of the slide cylinder (14). The guide protrusion is slidably engaged in the corresponding vertical guide groove (13). The roller (15) is rotatably mounted on the slide cylinder (14) and located above the extension plate (10).

7. The aluminum alloy box body for a new energy freight vehicle according to claim 6, characterized in that: The bottom end of the slide cylinder (14) is fixedly connected to a coaxially arranged fixed plate (16). One end of a plurality of traction steel cables (17) at the same relative position is connected to the corresponding fixed plate (16), and the other end of the plurality of traction steel cables (17) passes through the vertical column (12) and extends into the vertical column (12). One end of the traction steel cables (17) is fixedly connected to the telescopic end of the cylinder (18).

8. The aluminum alloy box body for a new energy freight vehicle according to claim 7, characterized in that: The top of the vertical column (12) is also fixedly fitted with a fixing plate, and the suspension spring (19) is fitted on the corresponding vertical column (12), and the two ends of the suspension spring (19) are respectively connected to the top of the corresponding fixing plate and the top of the slide cylinder (14).

9. The aluminum alloy box body for a new energy freight vehicle according to claim 7, characterized in that: The limiting cylinder (20) is installed on the corresponding side skirt (9), the limiting pin (21) is slidably sleeved in the corresponding limiting cylinder (20), the bottom end of the limiting cylinder (20) is also provided with a round hole, one end of the limiting rope is fixedly connected to the corresponding limiting pin (21), the other end of the limiting rope passes through the corresponding round hole and is connected to the telescopic end of the cylinder (18), and the two ends of the limiting spring are respectively connected to the bottom end of the limiting pin (21) and the bottom side wall of the corresponding limiting cylinder (20).

10. The aluminum alloy box body for a new energy freight vehicle according to claim 5, characterized in that: Multiple evenly distributed hollow grooves (22) are provided on the aluminum alloy side plate (4) and the inner frame (7). The hollow grooves (22) are also provided with reinforcing ribs (23) to improve the support strength of the aluminum alloy side plate (4) or the inner frame (7).

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