A hook-arm type solid waste truck cargo box locking structure

Abstract

This utility model discloses a locking structure for a hook-lift solid waste truck body, relating to the field of locking structure technology. It includes a truck body with a tailgate rotatably connected to its side. Symmetrically mounted round rods are installed on the side of the tailgate. A locking assembly is symmetrically arranged on the truck body. The locking assembly includes a control box mounted on the side of the truck body, a worm gear rotatably connected inside the control box, a rotating rod rotatably connected to the side of the truck body, a worm wheel and an arc-shaped rod mounted on the outer side of the rotating rod, a limiting plate mounted on the side of the arc-shaped rod, and a drive unit mounted on the truck body. The drive unit, when activated, drives the worm gear to rotate. When the worm gear rotates, it drives the rotating rod to rotate via the worm wheel. The rotating rod then drives the arc-shaped rod and the limiting plate to rotate, causing the limiting plate to lock against the outer side of the round rod. By setting up the locking assembly, the unidirectional self-locking characteristic of the worm wheel and worm gear assembly allows the limiting plate to maintain its position on the round rod through mechanical self-locking, preventing accidental opening of the tailgate and achieving stable locking of the tailgate and truck body.

Description

Technical Field

[0001] This utility model relates to the field of locking structure technology, and in particular to a hook-arm type solid waste truck body locking structure. Background Technology

[0002] Hooklift trucks, also known as detachable garbage trucks or crane trucks, are specialized transport vehicles equipped with hook-lift tipping mechanisms. They are mainly used for garbage collection and transfer in municipal sanitation, property management, and industrial and mining enterprises. The locking structure of the cargo compartment of a hooklift solid waste truck is usually composed of core components such as hooks and drive components. Its design focuses on achieving stable locking of the cargo compartment and safe transportation through mechanical linkage.

[0003] Conventional cargo box locking structures typically rely on a single locking method, such as hydraulic locking hooks, to secure the cargo box. The hydraulic system continuously supplies pressure to maintain the locking state. If the hydraulic rod malfunctions or the oil circuit leaks, the locking mechanism may automatically loosen, causing the cargo box to open unexpectedly. Therefore, a hook-lift type solid waste truck cargo box locking structure is proposed. Utility Model Content

[0004] The purpose of this utility model is to solve the shortcomings of the existing technology, which has a single locking method and may automatically release the locking mechanism if the hydraulic rod fails or the oil circuit leaks, resulting in the accidental opening of the truck body. Therefore, a hook-arm type solid waste truck body locking structure is proposed.

[0005] To achieve the above objectives, the present invention adopts the following technical solution: A hook-lift solid waste truck body locking structure includes a truck body with a tailgate rotatably connected to its side. Symmetrically mounted round rods are mounted on the side of the tailgate. A locking assembly is symmetrically arranged on the truck body. The locking assembly includes a control box mounted on the side of the truck body, a worm gear rotatably connected inside the control box, a rotating rod rotatably connected to the side of the truck body, a worm wheel and an arc-shaped rod mounted on the outer side of the rotating rod, a limiting plate mounted on the side of the arc-shaped rod, and a drive unit mounted on the truck body. The drive unit, when activated, drives the worm gear to rotate. When the worm gear rotates, it drives the rotating rod to rotate via the worm wheel. The rotation of the rotating rod drives the arc-shaped rod and the limiting plate to rotate, causing the limiting plate to engage with the outer side of the round rod for locking. The worm gear and worm assembly's one-way self-locking characteristic ensures that even if the hydraulic system fails and the hydraulic rod becomes unusable, the limiting plate can still mechanically lock the round rod, preventing the tailgate from opening accidentally. This achieves stable locking of the tailgate and the cargo compartment. A movable rod is movably connected to the inner side of the round rod, and a pressure plate is installed at the end of the movable rod. Square plates are symmetrically installed on the side of the cargo compartment, and the square plates are movably connected to the movable rod. When the limiting plate is locked on the outer side of the round rod, it presses the pressure plate and drives the movable rod to move and connect with the square plate. The movable rod moves automatically and locks with the square plate, forming a second mechanical fixation, providing double locking for the tailgate and the cargo compartment.

[0006] The above technical solution further includes: A circular plate is installed on the outer side of the movable rod, and a spring is installed on the side of the circular plate near the circular rod. The end of the spring away from the circular plate is fixedly connected to the circular rod.

[0007] A fixed rod is installed at the end of the movable rod away from the pressure plate. A fixed groove is provided on the side of the square plate near the movable rod. The fixed rod and the fixed groove are movably connected. The size of the opening of the fixed groove is adapted to the size of the fixed rod.

[0008] The pressure plate is positioned above the movement trajectory of the limiting plate, and the limiting plate will compress the pressure plate when it is stuck on the outside of the round rod.

[0009] The drive unit includes a hydraulic rod mounted on the side of the carriage, and a push plate is mounted on the output end of the hydraulic rod extending to the inside of the control box. After the hydraulic rod is activated, it pushes the push plate to move.

[0010] The drive unit also includes a rack mounted on the side of the push plate and a gear mounted on the outside of the worm. The gear meshes with the rack, and when the rack moves, it drives the worm to rotate through the gear.

[0011] When the pressure plate comes into contact with the round rod, the fixing rod is inserted into the inside of the square plate.

[0012] This utility model has the following beneficial effects: 1. In this utility model, by setting a locking component, the worm gear and worm assembly have a one-way self-locking characteristic. Even if the hydraulic system fails and the hydraulic rod cannot be used, the limiting plate can still maintain the limit of the round rod through mechanical self-locking, preventing the tailgate from opening accidentally, thereby achieving stable locking of the tailgate and the cargo compartment.

[0013] 2. In this utility model, when the limiting plate is stuck on the outside of the round rod, the movable rod moves automatically and locks with the square plate to form a second mechanical fixation, thus performing double locking work on the tailgate and the carriage. Attached Figure Description

[0014] Figure 1 This is a schematic diagram of the overall structure of a hook-arm type solid waste truck body locking structure proposed in this utility model. Figure 2 This is a schematic diagram of the overall side sectional structure of this utility model; Figure 3 for Figure 2 Enlarged schematic diagram of the structure at point A in the middle; Figure 4 for Figure 2 Enlarged schematic diagram of the structure at point B.

[0015] In the diagram: 1. Carriage; 2. Tailgate; 3. Control box; 4. Hydraulic rod; 5. Push plate; 6. Rack; 7. Gear; 8. Worm gear; 9. Rotating rod; 10. Worm wheel; 11. Arc rod; 12. Limiting plate; 13. Round rod; 14. Square plate; 15. Fixing groove; 16. Fixing rod; 17. Movable rod; 18. Circular plate; 19. Spring; 20. Pressure plate. Detailed Implementation

[0016] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0017] Example 1 like Figure 1 - Figure 4 As shown, this utility model proposes a hook-lift solid waste truck body locking structure, including a truck body 1. A tailgate 2 is rotatably connected to the side of the truck body 1. Round rods 13 are symmetrically installed on the side of the tailgate 2. Locking components are symmetrically arranged on the truck body 1. The locking components include a control box 3 installed on the side of the truck body 1, a worm gear 8 rotatably connected to the inside of the control box 3, a rotating rod 9 rotatably connected to the side of the truck body 1, a worm wheel 10 and an arc-shaped rod 11 respectively installed on the outside of the rotating rod 9, a limiting plate 12 installed on the side of the arc-shaped rod 11, and a drive unit installed on the truck body 1. When the drive unit is activated, it drives the worm gear 8 to rotate. When the worm gear 8 rotates, it drives the rotating rod 9 to rotate through the worm wheel 10. The rotation of the rotating rod 9 drives the arc-shaped rod 11 and the limiting plate 12 to rotate, so that the limiting plate 12 is locked on the outside of the round rod 13. By utilizing the one-way self-locking characteristic of the worm gear 10 and worm 8 assembly, even if the hydraulic system fails and the hydraulic rod 4 becomes unusable, the limiting plate 12 can still mechanically lock the round rod 13 to prevent the tailgate 2 from opening accidentally, thus achieving stable locking of the tailgate 2 and the cargo compartment 1. The inner side of the round rod 13 is movably connected to the movable rod 17, and the end of the movable rod 17 is equipped with a pressure plate 20. The side of the cargo compartment 1 is symmetrically equipped with square plates 14, which are movably connected to the movable rod 17. When the limiting plate 12 is locked on the outside of the round rod 13, it squeezes the pressure plate 20 and drives the movable rod 17 to move and connect with the square plate 14. The movable rod 17 moves automatically and locks with the square plate 14, forming a second mechanical fixation, thus performing double locking of the tailgate 2 and the cargo compartment 1.

[0018] The drive unit includes a hydraulic rod 4 mounted on the side of the carriage 1. The hydraulic rod 4 extends to the output end inside the control box 3 and is equipped with a push plate 5. After the hydraulic rod 4 is activated, it pushes the push plate 5 to move.

[0019] The drive unit also includes a rack 6 mounted on the side of the push plate 5 and a gear 7 mounted on the outside of the worm 8. The gear 7 meshes with the rack 6, and when the rack 6 moves, it drives the worm 8 to rotate through the gear 7.

[0020] In this embodiment, when it is necessary to lock the tailgate 2, the hydraulic rod 4 can be activated. The hydraulic rod 4 pushes the push plate 5 to move. When the push plate 5 moves, it drives the rack 6 to move. Since the push plate 5 is meshed with the gear 7, the rack 6 moves and drives the gear 7 to rotate. The rotation of the gear 7 drives the worm 8 to rotate. Since the worm 8 is meshed with the worm wheel 10, the rotation of the worm 8 drives the rotating rod 9 to rotate through the worm wheel 10. The rotation of the rotating rod 9 drives the arc rod 11 to rotate until the limiting plate 12 is locked on the outside of the round rod 13, limiting the round rod 13, thereby achieving the locking operation of the limiting plate 12. Furthermore, since the worm 8 and the worm wheel 10 have self-locking properties, when the hydraulic rod 4 fails or malfunctions, the arc rod 11 and the limiting plate 12 can always limit the round rod 13, thereby achieving the stable locking operation of the tailgate 2 and the carriage 1.

[0021] Example 2 like Figure 1 - Figure 4 As shown, based on Embodiment 1, a circular plate 18 is installed on the outer side of the movable rod 17, and a spring 19 is installed on the side of the circular plate 18 near the circular rod 13. The end of the spring 19 away from the circular plate 18 is fixedly connected to the circular rod 13.

[0022] A fixed rod 16 is installed at the end of the movable rod 17 away from the pressure plate 20. A fixed groove 15 is opened on the side of the square plate 14 near the movable rod 17. The fixed rod 16 is movably connected to the fixed groove 15. The size of the opening of the fixed groove 15 is adapted to the size of the fixed rod 16.

[0023] The pressure plate 20 is positioned above the movement trajectory of the limiting plate 12. When the limiting plate 12 is stuck on the outside of the round rod 13, it will squeeze the pressure plate 20.

[0024] When the pressure plate 20 comes into contact with the round rod 13, the fixing rod 16 is inserted into the inside of the square plate 14.

[0025] In this embodiment, when the limiting plate 12 is stuck on the outside of the round rod 13, it will squeeze the pressure plate 20, thereby driving the pressure plate 20 to move closer to the round rod 13, and at the same time driving the movable rod 17 to move. At this time, the round plate 18 stretches the spring 19, so that the spring 19 is in a stretched state. When the movable rod 17 moves, it drives the fixed rod 16 to insert into the fixed groove 15, thereby realizing the locking of the movable rod 17 and the square plate 14, and performing double locking work on the tailgate 2 and the carriage 1.

[0026] Although embodiments of the present 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 present invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. A locking structure for the cargo compartment of a hook-lift solid waste truck, comprising a cargo compartment (1), characterized in that, The side of the carriage (1) is rotatably connected to a tailgate (2). A round rod (13) is symmetrically installed on the side of the tailgate (2). A locking assembly is symmetrically arranged on the carriage (1). The locking assembly includes a control box (3) installed on the side of the carriage (1), a worm gear (8) rotatably connected inside the control box (3), a rotating rod (9) rotatably connected to the side of the carriage (1), a worm wheel (10) and an arc rod (11) respectively installed on the outside of the rotating rod (9), a limiting plate (12) installed on the side of the arc rod (11), and a drive unit set on the carriage (1). The drive unit starts to drive the worm gear (8) to rotate. When the worm gear (8) rotates, it passes through the worm wheel. The wheel (10) drives the rotating rod (9) to rotate. The rotation of the rotating rod (9) drives the arc rod (11) and the limiting plate (12) to rotate, so that the limiting plate (12) is locked on the outside of the round rod (13). The inner side of the round rod (13) is movably connected to the movable rod (17). The end of the movable rod (17) is equipped with a pressure plate (20). The side of the carriage (1) is symmetrically equipped with square plates (14). The square plates (14) are movably connected to the movable rod (17). When the limiting plate (12) is locked on the outside of the round rod (13), it squeezes the pressure plate (20) and drives the movable rod (17) to move and connect with the square plate (14).

2. The hook-arm type solid waste truck carriage locking structure according to claim 1, characterized in that, A circular plate (18) is installed on the outside of the movable rod (17). A spring (19) is installed on the side of the circular plate (18) near the circular rod (13). The end of the spring (19) away from the circular plate (18) is fixedly connected to the circular rod (13).

3. The hook-arm type solid waste truck carriage locking structure according to claim 2, characterized in that, A fixed rod (16) is installed at the end of the movable rod (17) away from the pressure plate (20). A fixed groove (15) is provided on the side of the square plate (14) near the movable rod (17). The fixed rod (16) and the fixed groove (15) are movably connected. The size of the opening of the fixed groove (15) is adapted to the size of the fixed rod (16).

4. The hook-lift solid waste truck body locking structure according to claim 3, characterized in that... The pressure plate (20) is positioned on the movement trajectory of the limiting plate (12).

5. The hook-lift solid waste truck body locking structure according to claim 1, characterized in that, The drive unit includes a hydraulic rod (4) mounted on the side of the carriage (1), and a push plate (5) is mounted on the output end of the hydraulic rod (4) extending to the inside of the control box (3).

6. The hook-lift solid waste truck body locking structure according to claim 5, characterized in that, The drive unit also includes a rack (6) mounted on the side of the push plate (5) and a gear (7) mounted on the outside of the worm (8), the gear (7) meshing with the rack (6).

7. The hook-lift solid waste truck body locking structure according to claim 3, characterized in that, When the pressure plate (20) comes into contact with the round rod (13), the fixing rod (16) is inserted into the inside of the square plate (14).

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