Container assembly with adjustable seesaw and mining dump truck
By designing a cargo box assembly with adjustable rocker, the problem that traditional cargo box structure cannot adapt to the transportation of different materials is solved, flexible switching of cargo box forms and improved transportation efficiency are achieved, and transportation safety and stability are ensured.
Patent Information
- Application Number
- CN202411888950.2
- Authority / Receiving Office
- CN · China
- Patent Type
- Applications(China)
- Current Assignee / Owner
- Filing Date
- 2024-12-20
- Publication Date
- 2025-02-18
AI Technical Summary
Traditional cargo boxes are fixed structures, which are difficult to adapt to the transportation of materials of different types and sizes. They are likely to cause the front wheel to leave the ground or the whole vehicle to overturn back during the unloading process, posing safety hazards.
A cargo box assembly with adjustable rocker is designed, and the flip angle of the rocker mechanism is adjusted through the rocker adjustment mechanism, so as to quickly switch between square cargo boxes and tail cargo boxes, and in different states through the tailgate locking mechanism. Lock or loosen the tailgate to ensure safe transportation of goods.
It realizes flexible switching of cargo box forms, adapts to a variety of transportation conditions, improves transportation efficiency and safety, reduces transportation costs, and improves unloading efficiency and the stability of the entire vehicle.
Smart Images
Figure CN119459493A_ABST
Abstract
Description
Technical Field
[0001] The present application relates to the technical field of dump trucks, and in particular to a cargo box assembly with an adjustable rocker and a mining dump truck. Background Art
[0002] The cargo box is an important load-bearing structural component on a dump truck. The cargo box of a dump truck is hinged to the frame. When the cargo needs to be unloaded, the hydraulic system or mechanical device of the dump truck will drive the cargo box to rise relative to the frame to ensure that the cargo can slide down smoothly. When loading cargo or driving the dump truck, the hydraulic system or mechanical device will lower the cargo box to a position parallel to the frame to ensure the stability and safety of the cargo box during loading and driving.
[0003] In the mining process, since the surface soil, overburden, ore and other materials that need to be processed have different particle sizes, densities and physical properties, choosing the right type of container is crucial to ensure the safety and efficiency of transportation. However, traditional containers are fixed structures, and stocking containers of different structures not only greatly increases the cost of use, but also seriously affects the construction efficiency when replacing containers.
[0004] On the other hand, traditional upturned-tail cargo boxes are used to transport large materials. Because the tail is upturned, when unloading goods, the goods often pile up at the tail, which can easily cause the front wheels to leave the ground or even the entire vehicle to overturn, posing a major safety hazard. Summary of the invention
[0005] In order to solve the technical problems existing in the prior art, the first aspect of the present application provides a cargo box assembly with an adjustable rocker, which includes a bottom plate and two side plates fixedly connected to the bottom plate; the rear end of the bottom plate is connected to a rocker mechanism, the front end of the rocker mechanism is hinged to the bottom plate, and the side plates are connected to a rocker adjustment mechanism, one end of the rocker adjustment mechanism is connected to the rocker mechanism, and is used to provide pulling force for the rocker mechanism and adjust the flipping angle of the rocker mechanism.
[0006] Furthermore, the rocker adjustment mechanism includes a positioning block and a chain I, a first rotating rod, a chain II, a second rotating rod and a pressure rod connected in sequence, wherein the end of the chain I away from the first rotating rod is hinged to the rocker mechanism, the first rotating rod and the second rotating rod are rotatably connected to the side plate, the pressure rod is slidably connected to the guide block fixed on the side plate, and the positioning block is located below the pressure rod to limit the moving distance of the pressure rod.
[0007] Furthermore, the first rotating rod and the second rotating rod are both V-shaped structures, including a hinged hole and two connecting rods hinged to the side plate, the upper end of the chain I is hinged to the right end of the first rotating rod, the left end of the first rotating rod is hinged to the right end of the chain II, the left end of the chain II is hinged to the left end of the second rotating rod, and the right end of the second rotating rod is hinged to the upper end of the pressure rod.
[0008] Furthermore, the cargo box assembly also includes a tailgate mechanism and a tailgate locking mechanism, the tailgate mechanism is a large tailgate, the top two sides of the large tailgate are respectively connected to the two side panels, the bottom of the large tailgate abuts against the rocker mechanism, and the tailgate locking mechanism is fixed to the rear end of the rocker mechanism, and is used to lock the large tailgate when the cargo box assembly is in a dropped state, and to release the large tailgate when the cargo box assembly is in a raised state.
[0009] Furthermore, the chain I is a long chain, and the chain I provides an upward pulling force for the rear end of the rocker mechanism, so that the rocker mechanism is in a horizontal state when the cargo box assembly is in a falling state.
[0010] Furthermore, the cargo box assembly also includes a tailgate mechanism and a tailgate locking mechanism, the tailgate mechanism is a small tailgate, the bottom of the small tailgate is hinged to the rear end of the rocker mechanism, the tailgate locking mechanism is fixed to the rear end of the rocker mechanism, and is used to lock the small tailgate when the cargo box assembly is in a dropped state so that the small tailgate is in a vertical state, and release the small tailgate when the cargo box assembly is in a raised state.
[0011] Furthermore, the chain I is a short chain, and the chain I provides an upward pulling force for the rear end of the rocker mechanism, so that when the cargo box assembly is in a falling state, the rocker mechanism is in an upward state.
[0012] Furthermore, the tailgate locking mechanism includes a chain III, a chain fixing seat, a tail hook and a tail hook seat, the chain fixing seat is fixed on the vehicle frame, the tail hook seat is fixed on the rocker mechanism, the tail hook is hinged to the tail hook seat, one end of the chain III is fixed on the chain fixing seat, and the other end is hinged to the tail hook.
[0013] Furthermore, a rocker plate limit seat for limiting the downward flipping angle of the rocker plate mechanism is provided on the bottom plate.
[0014] A second aspect of the present application provides a mining dump truck, comprising a frame and a cargo box assembly with an adjustable rocker as described in any one of the above items.
[0015] Compared with the prior art, the beneficial effects of this application are: 1. The cargo box assembly of the present application can change the flipping angle of the seesaw mechanism by adjusting the length of chain I, thereby realizing rapid switching between a square cargo box and a lifted-tail cargo box. At the same time, by configuring different tailgate mechanisms, various cargo box forms such as a square cargo box + a large tailgate, a square cargo box + a small tailgate, a lifted-tail cargo box + a small tailgate, and a lifted-tail cargo box can be realized; it can adapt to various transportation conditions to match materials of different types and sizes, thereby improving transportation efficiency and flexibility and saving transportation costs.
[0016] 2. During the rising process of the cargo box assembly of the present application, the seesaw mechanism can automatically realize the slow fall from the upward or horizontal state to the downward state through the seesaw adjustment mechanism, thereby improving the unloading efficiency and level, and preventing the front wheel from leaving the ground or even the whole vehicle from tipping over due to the accumulation of materials at the rear, greatly improving the safety and stability of the whole vehicle. During the falling process of the cargo box assembly, the seesaw mechanism can slowly rise from the downward state to the upward or horizontal state, so as to facilitate the subsequent loading, improve the carrying capacity of the cargo box assembly, and improve the transportation efficiency of the whole vehicle.
[0017] 3. The tailgate locking mechanism of the present application is fixed at the rear end of the rocker mechanism, which can lock the tailgate mechanism when the cargo box assembly is in a lowered state, and release the tailgate mechanism when the cargo box assembly is in a raised state, thereby greatly improving the safety of transportation and the efficiency of unloading. BRIEF DESCRIPTION OF THE DRAWINGS
[0018] Figure 1 This is a schematic diagram of the structure of the cargo box assembly of this application; Figure 2 A top view of the cargo box assembly of the present application; Figure 3 A bottom view of the cargo box assembly of the present application; Figure 4 A rear view of the cargo box assembly of the present application; Figure 5 This is a schematic diagram of the structure of the base plate of this application; Figure 6 This is a schematic diagram of the structure of the seesaw mechanism of the present application; Figure 7 This is a schematic diagram of the structure of the small tailgate of the present application; Figure 8 This is a structural schematic diagram of a cargo box assembly according to Embodiment 1 of the present application; Fig. 9 It is a front view of the cargo box assembly of the second embodiment of the present application; Fig.10 It is a front view of the cargo box assembly of the third embodiment of the present application; Fig.11 It is a front view of the cargo box assembly of the third embodiment of the present application; In the figure: 1. Cargo box assembly; 11. Bottom plate; 12. Side plate; 13. Front plate; 14. Hat brim; 15. Tail plate hinge seat; 16. Tail plate limit seat; 2. Rocker mechanism; 21. Frame connecting plate; 22. Chain connecting plate; 23. Small tailgate hinge seat; 24. Small tailgate limit seat; 3. Rocker adjustment mechanism; 31. Chain I; 32. Chain II; 33. First rotating rod; 34. Second rotating rod; 35. Press rod; 36. Guide block; 37. Positioning block; 38. Rotating shaft; 4. Tailgate locking mechanism; 41. Chain III; 42. Chain fixing seat; 43. Tail hook; 44. Tail hook seat; 5. Tailgate mechanism; 51. Large tailgate; 52. Small tailgate; 521. Rocker connecting plate; 522. Tail hook slot; 6. Frame. DETAILED DESCRIPTION
[0019] In order to facilitate the understanding of the present application, the technical solutions in the embodiments of the present application will be clearly and completely described below in conjunction with the drawings in the embodiments of the present application. Obviously, the described embodiments are only part of the embodiments of the present application, not all of the embodiments. Based on the embodiments in the present application, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of this application.
[0020] The present application is described in detail below. In the following paragraphs, different aspects of the embodiments are defined in more detail. Each aspect defined in this way can be combined with any other aspect or aspects, unless it is clearly stated that it cannot be combined. In particular, any feature that is considered to be preferred or advantageous can be combined with one or more other features that are considered to be preferred or advantageous.
[0021] The words "first", "second" and similar words used in this application do not indicate any order, quantity or importance, but are only used to distinguish different parts. The words "include" or "comprise" and similar words mean that the elements before the word include the elements listed after the word, and do not exclude the possibility of including other elements.
[0022] In the description of the present application, it should be understood that the terms "inside", "outside", "up", "down", "left" and "right" etc. indicating directions or positional relationships are based on the directions or positional relationships shown in the accompanying drawings and are only for the convenience of describing the present application. They do not indicate or imply that the device referred to must have a specific direction, be constructed and operated in a specific direction. Therefore, they should not be understood as limiting the scope of protection of the present application. Example
[0023] This embodiment discloses a cargo box assembly with an adjustable rocker plate, referring to Figures 1 to 4 As described, the rear part of the cargo box assembly 1 is hinged with the frame 6. When the cargo needs to be unloaded, the hydraulic system or mechanical device of the dump truck will drive the front part of the cargo box assembly 1 to rise relative to the frame 6 to ensure that the cargo can slide smoothly. When loading cargo or driving the dump truck, the hydraulic system or mechanical device will lower the cargo box assembly 1 to a position parallel to the frame 6 to ensure the stability and safety of the cargo box assembly 1 during loading and driving. The cargo box assembly 1 includes a bottom plate 11, two side plates 12, a front plate 13 and a brim 14. The two side plates 12 are respectively welded on both sides of the bottom plate 11, and the side plates 12 are perpendicular to the bottom plate 11. The front plate 13 is welded to the front ends of the bottom plate 11 and the two side plates 12, and the brim 14 is welded to the upper end of the front plate 13. In this embodiment, the length of the rear end of the side plate 12 is greater than the length of the bottom plate 11, and a gap is formed at the rear end of the cargo box assembly 1. A seesaw mechanism 2 is provided at the notch at the rear end of the cargo box assembly 1, and the front end of the seesaw mechanism 2 is hinged to the rear end of the bottom plate 11. A seesaw adjustment mechanism 3 is connected to the side plate 12, and the lower end of the seesaw adjustment mechanism 3 is connected to the seesaw mechanism 2 to provide tension for the seesaw mechanism 2 and adjust the flip angle of the seesaw mechanism 2.
[0024] Specifically, refer to Figure 5 to Figure 6 As described, a plurality of tailgate hinge seats 15 and a plurality of tailgate limit seats 16 are fixed to the rear end of the bottom plate 11. Preferably, the number of the tailgate hinge seats 15 is 3 and they are arranged at intervals along the bottom plate 11, and the number of the tailgate limit seats 16 is 4 and they are arranged at intervals along the bottom plate 11. The front end of the seesaw mechanism 2 is provided with a frame connecting plate 21 corresponding to the tailgate hinge seat 15, and the frame connecting plate 21 is hinged to the tailgate hinge seat 15 through an axle pin. Chain connecting plates 22 extending to the outside of the side plates 12 are respectively provided on both sides of the bottom of the seesaw mechanism 2, and a notch is provided on the top of the chain connecting plate 22 to prevent the side plates 12 from causing obstruction to the seesaw mechanism 2 when it turns around the tailgate hinge seat 15.
[0025] The seesaw adjustment mechanism 3 includes a chain I 31, a chain II 32, a first rotating rod 33, a second rotating rod 34, a pressure rod 35, a guide block 36 and a positioning block 37. The chain I 31, the first rotating rod 33, the chain II 32, the second rotating rod 34 and the pressure rod 35 are sequentially connected in transmission, and the end of the chain I 31 away from the first rotating rod 33 is hinged to the seesaw mechanism 2. The first rotating rod 33 and the second rotating rod 34 are rotatably connected to the side plate 12, and the first rotating rod 33 and the second rotating rod 34 are arranged side by side front and back. The guide block 36 is fixed below the second rotating rod 34 and a guide hole is provided in the guide block 36. The pressure rod 35 is arranged in the guide hole of the guide block 36 and is slidably connected thereto. The positioning block 37 is fixed on the frame 6 and extends below the pressure rod 35 to limit the moving distance of the pressure rod 35.
[0026] The first rotating rod 33 and the second rotating rod 34 are both V-shaped structures, including a hinged hole and two intersecting connecting rods hinged to the side plate 12, and the first rotating rod 33 and the second rotating rod 34 are rotatably fixed to the side plate 12 through a rotating shaft 38. The upper end of the chain I 31 is hinged to the right end of the first rotating rod 33, the left end of the first rotating rod 33 is hinged to the right end of the chain II 32, the left end of the chain II 32 is hinged to the left end of the second rotating rod 34, and the right end of the second rotating rod 34 is hinged to the upper end of the pressure rod 35.
[0027] When the cargo box assembly 1 falls to the preset position, the pressure rod 35 contacts and abuts against the positioning block 37. As the cargo box assembly 1 continues to fall, the positioning block 37 pushes the pressure rod 35 to move upward relative to the guide block 36. The pressure rod 35 pushes the second rotating rod 34 to rotate counterclockwise around the reaming hole, driving the chain II 32 to move forward, and then driving the chain I 31 to move upward, providing an upward pulling force for the seesaw mechanism 2 and driving the seesaw mechanism 2 to flip around the tail plate hinge seat 15 to a preset angle. Among them, the flipping angle of the seesaw mechanism 2 can be adjusted according to the length of the chain I 31. When the chain I 31 is a preset long chain, the seesaw mechanism 2 is in a horizontal state when the cargo box assembly 1 is in a falling state, that is, the angle between the seesaw mechanism 2 and the bottom plate 11 is 0°, and the cargo box assembly 1 is a square cargo box. When the chain I31 is a preset short chain, the seesaw mechanism 2 is in an upward state when the cargo box assembly 1 is in a falling state, and the cargo box assembly 1 is a tail-up cargo box. In this embodiment, in the upward state, the angle between the seesaw mechanism 2 and the bottom plate 11 is 3° to 30°, and preferably, the angle between the seesaw mechanism 2 and the bottom plate 11 is 9°, 12°, 15°, 18°, 21°, 24°, 27°.
[0028] The cargo box assembly 1 of this embodiment can achieve rapid switching between a square cargo box and a tail-end cargo box through the length of the chain Ⅰ31, so as to improve loading efficiency and reduce transportation costs.
[0029] When the cargo box assembly 1 is rising, refer to Figure 8 As described, under the action of the deadweight of the seesaw mechanism 2, the chain I 31 drives the first rotating rod 33 and the second rotating rod 34 to rotate clockwise, pushing the pressure rod 35 to move downward relative to the guide block 36. When the cargo box assembly 1 rises to the preset position, the pressure rod 35 is out of contact with the positioning block 37. When the seesaw mechanism 2 flips downward to abut against the tailgate limit seat 16, the seesaw mechanism 2 stops rotating. In this embodiment, when the seesaw mechanism 2 flips downward to abut against the tailgate limit seat 16, the seesaw mechanism 2 is in a downward tilting state. In this embodiment, in the downward tilting state, the angle between the seesaw mechanism 2 and the bottom plate 11 is -3° to -30°. Preferably, the angle between the seesaw mechanism 2 and the bottom plate 11 is -9°, -12°, -15°, -18°, -21°, -24°, or -27°.
[0030] During the rising process of the cargo box assembly 1 of this embodiment, the seesaw mechanism 2 can slowly fall from an upward or horizontal state to a downward state, thereby improving the unloading efficiency and level, and preventing the front wheel from leaving the ground or even the whole vehicle from tipping over due to the accumulation of materials at the rear, greatly improving the safety and stability of the whole vehicle. During the falling process of the cargo box assembly 1, the seesaw mechanism 2 can slowly rise from a downward state to an upward or horizontal state, so as to facilitate subsequent loading, improve the carrying capacity of the cargo box assembly 1, and improve the transportation efficiency of the whole vehicle. Example
[0031] Compared with Example 1, the main difference of this embodiment is that Figure 1 , Fig. 9 As described above, the cargo box assembly 1 further includes a tailgate mechanism 5 and a tailgate locking mechanism 4 .
[0032] In this embodiment, the tailgate mechanism 5 is a large tailgate 51, the top two sides of the large tailgate 51 are respectively hinged to the two side panels 12, and the bottom of the large tailgate 51 is in contact with the rocker mechanism 2. Specifically, a detachable hinge seat is provided on the top of the side panel 12, and the top of the large tailgate 51 is hinged to the hinge seat on the side panel 12 through a pin. The tailgate locking mechanism 4 is fixed to the rear end of the rocker mechanism 2, and is used to lock the large tailgate 51 when the cargo box assembly 1 is in a lowered state, and to release the large tailgate 51 when the cargo box assembly 1 is in a raised state.
[0033] The tailgate locking mechanism 4 includes a chain III 41, a chain fixing seat 42, a tail hook 43 and a tail hook seat 44. The chain fixing seat 42 is fixed to the frame 6 by bolts, and the tail hook seat 44 is welded and fixed to the rear end of the rocker mechanism 2. The lower end of the tail hook 43 is hinged to the tail hook seat 44 through an axle pin. One end of the chain III 41 is fixed to the chain fixing seat 42, and the other end is hinged to the middle of the tail hook 43. Specifically, the chain fixing seat 42 is located below the hinge point between the cargo box assembly 1 and the frame 6. When the cargo box assembly 1 falls to a horizontal state, the distance between the chain fixing seat 42 and the tail hook 43 is the longest, so that the chain III 41 is in a taut state. The chain III 41 provides a pulling force to the tail hook 43, so that the tail hook 43 rotates counterclockwise around the tail hook seat 44, and the upper end of the tail hook 43 abuts against the large tailgate 51, thereby locking the large tailgate 51 to prevent the cargo in the cargo box assembly 1 from falling. When the cargo box assembly 1 is in the ascending state, the distance between the chain fixing seat 42 and the tail hook 43 gradually shortens, and the tension provided by the chain III 41 to the tail hook 43 gradually disappears, thereby releasing the large tail gate 51. The cargo box assembly 1 of this embodiment can lock the large tail gate 51 when the cargo box assembly 1 is in the descending state for loading or transportation, and release the large tail gate 51 when the cargo box assembly 1 is in the ascending state for unloading. The transportation safety and unloading efficiency are greatly improved. Example
[0034] Compared with Example 2, reference Figure 1 , Fig.10 and Fig.11 The main difference of this embodiment is that the tailgate mechanism 5 is a small tailgate 52, and the bottom of the small tailgate 52 is hinged at the rear end of the rocker mechanism 2. Specifically, the rear end of the rocker mechanism 2 is fixed with a plurality of small tailgate hinge seats 23 and a plurality of small tailgate limit seats 24. Preferably, the number of the small tailgate hinge seats 23 is 3 and is arranged at intervals along the rocker mechanism 2, and the number of the small tailgate limit seats 24 is 4 and is arranged at intervals along the rocker mechanism 2. A rocker connecting plate 521 corresponding to the small tailgate hinge seat 23 is provided at the lower end of the small tailgate 52, and the rocker connecting plate 521 is hinged to the small tailgate hinge seat 23 through an axle pin. When the small tailgate 52 flips down to a preset angle under the action of its own gravity, the small tailgate limit seat 24 can abut against the small tailgate 52 to limit it from continuing to flip down.
[0035] The tailgate locking mechanism 4 is fixed to the rear end of the rocker mechanism 2, and is used to lock the small tailgate 52 when the cargo box assembly 1 is in a falling state, so that the small tailgate 52 is in a vertical state, and to release the small tailgate 52 when the cargo box assembly 1 is in a raised state. Specifically, the small tailgate 52 is also provided with a tail hook groove 522 corresponding to the tail hook 43. When the cargo box assembly 1 falls to a horizontal state, the chain III 41 provides a pulling force to the tail hook 43, and the upper end of the tail hook 43 abuts against the tail hook groove 522 on the small tailgate 52, thereby locking the small tailgate 52, so that the small tailgate 52 is in a vertical state to prevent the cargo in the cargo box assembly 1 from falling. When the cargo box assembly 1 is in an ascending state, the distance between the chain fixing seat 42 and the tail hook 43 gradually shortens, and the pulling force provided by the chain III 41 to the tail hook 43 gradually disappears, thereby releasing the small tailgate 52. The small tailgate 52 is flipped downward under the action of gravity to abut against the small tailgate limit seat 24. The tailgate locking mechanism 4 of this embodiment is fixed to the rear end of the rocker mechanism 2, and can lock the small tailgate 52 when the cargo box assembly 1 is in a lowered state for loading or transportation, and release the small tailgate 52 when the cargo box assembly 1 is in a raised state for unloading, which greatly improves the safety of transportation and the efficiency of unloading.
[0036] The above shows and describes the basic principles, main features and advantages of the present application. Those skilled in the art should understand that the present application is not limited by the above embodiments. The above embodiments and descriptions are only for explaining the principles of the present application. Without departing from the spirit and scope of the present application, the present application may have various changes and improvements, which fall within the scope of the present application to be protected. The scope of protection claimed in the present application is defined by the attached claims and their equivalents.
Claims
1. A cargo box assembly with an adjustable rocker, characterized in that: The cargo box assembly (1) comprises a bottom plate (11) and two side plates (12) fixedly connected to the bottom plate (11); the rear end of the bottom plate (11) is connected to a seesaw mechanism (2), the front end of the seesaw mechanism (2) is hinged to the bottom plate (11), and the side plates (12) are connected to a seesaw adjustment mechanism (3), one end of the seesaw adjustment mechanism (3) is connected to the seesaw mechanism (2) for providing a pulling force to the seesaw mechanism (2) and adjusting the flipping angle of the seesaw mechanism (2).
2. The cargo box assembly with adjustable rocker according to claim 1, characterized in that: The rocker adjustment mechanism (3) comprises a positioning block (37) and a chain I (31), a first rotating rod (33), a chain II (32), a second rotating rod (34) and a pressure rod (35) connected in sequence, wherein one end of the chain I (31) away from the first rotating rod (33) is hinged to the rocker mechanism (2), the first rotating rod (33) and the second rotating rod (34) are rotatably connected to the side plate (12), the pressure rod (35) is slidably connected to a guide block (36) fixed on the side plate (12), and the positioning block (37) is located below the pressure rod (35) to limit the moving distance of the pressure rod (35).
3. The cargo box assembly with adjustable rocker according to claim 2, characterized in that: The first rotating rod (33) and the second rotating rod (34) are both V-shaped structures, including a hinge hole hinged to the side plate (12) and two connecting rods, the upper end of the chain I (31) is hinged to the right end of the first rotating rod (33), the left end of the first rotating rod (33) is hinged to the right end of the chain II (32), the left end of the chain II (32) is hinged to the left end of the second rotating rod (34), and the right end of the second rotating rod (34) is hinged to the upper end of the pressure rod (35).
4. The cargo box assembly with adjustable rocker according to claim 2, characterized in that: The cargo box assembly (1) further comprises a tailgate mechanism (5) and a tailgate locking mechanism (4); the tailgate mechanism (5) is a large tailgate (51); the top two sides of the large tailgate (51) are respectively connected to the two side panels (12); the bottom of the large tailgate (51) is in contact with the rocker mechanism (2); the tailgate locking mechanism (4) is fixed to the rear end of the rocker mechanism (2) and is used to lock the large tailgate (51) when the cargo box assembly (1) is in a lowered state, and to release the large tailgate (51) when the cargo box assembly (1) is in a raised state.
5. The cargo box assembly with adjustable rocker according to claim 4, characterized in that: The chain I (31) is a long chain, and the chain I (31) provides an upward pulling force for the rear end of the seesaw mechanism (2), so that when the cargo box assembly (1) is in a falling state, the seesaw mechanism (2) is in a horizontal state.
6. The cargo box assembly with adjustable rocker according to claim 2, characterized in that: The cargo box assembly (1) further comprises a tailgate mechanism (5) and a tailgate locking mechanism (4); the tailgate mechanism (5) is a small tailgate (52); the bottom of the small tailgate (52) is hinged to the rear end of the rocker mechanism (2); the tailgate locking mechanism (4) is fixed to the rear end of the rocker mechanism (2) and is used to lock the small tailgate (52) when the cargo box assembly (1) is in a dropped state so that the small tailgate (52) is in a vertical state, and to release the small tailgate (52) when the cargo box assembly (1) is in a raised state.
7. The cargo box assembly with adjustable rocker according to claim 6, characterized in that: The chain I (31) is a short chain, and the chain I (31) provides an upward pulling force for the rear end of the seesaw mechanism (2), so that when the cargo box assembly (1) is in a falling state, the seesaw mechanism (2) is in an upward state.
8. The cargo box assembly with adjustable rocker according to claim 4 or 6, characterized in that: The tailgate locking mechanism (4) comprises a chain III (41), a chain fixing seat (42), a tail hook (43) and a tail hook seat (44); the chain fixing seat (42) is fixed on the vehicle frame 6; the tail hook seat (44) is fixed on the rocker mechanism (2); the tail hook (43) is hinged to the tail hook seat (44); one end of the chain III (41) is fixed on the chain fixing seat (42); and the other end is hinged to the tail hook (43).
9. The cargo box assembly with adjustable rocker according to claim 2, characterized in that: The bottom plate (11) is provided with a rocker plate limiting seat (16) for limiting the downward tilting angle of the rocker plate mechanism (2).
10. A mining dump truck, characterized in that: It comprises a vehicle frame (6) and a cargo box assembly with an adjustable rocker as claimed in any one of claims 1 to 9.