A two-stage locking device for a garbage can tail door

Abstract

The utility model discloses a kind of garbage can tail door secondary locking device, its composition includes box, fixedly installed fixed hinge and the rotary hinge connected with fixed hinge in the top of box tail, rotary hinge is fixedly connected together with tail door, the two sides of the box and tail door are respectively provided with primary locking device, the bottom of the box and tail door is provided with secondary locking device, the contact surface of the box and tail door is fixedly provided with rubber pad.The utility model is provided with secondary locking device in the bottom of box and tail door, can better carry out secondary locking to tail door, prevent the intermittent between box and tail door, prevent the leakage of garbage or sewage, avoid to cause secondary pollution of environment.

Description

Technical Field

[0001] This utility model relates to the field of garbage trucks, and in particular to a two-stage locking device for the tailgate of a garbage bin. Background Technology

[0002] Existing garbage truck tailgates typically have opening, closing, and locking devices on both sides of the tailgate and the container. Generally, two locking hooks are installed on the side wall to lock the tailgate to the container. However, in actual use, because the locking devices are all located on the sides, after a long period of use, the tailgate and the bottom of the container cannot be locked properly, and gaps will appear between the tailgate and the container. Sometimes garbage or sewage will leak out from the gaps, causing secondary pollution to the environment. Summary of the Invention

[0003] To solve the above problems, the technical solution of this utility model is: a two-stage locking device for the tail door of a garbage bin, which includes a bin body, a fixed hinge and a rotating hinge connected to the fixed hinge are fixedly installed at the top of the tail of the bin body, the rotating hinge is fixedly connected to the tail door, a primary locking device is provided on both sides of the bin body and the tail door, a secondary locking device is provided at the bottom of the bin body and the tail door, and a rubber pad is fixedly provided on the contact surface of the bin body and the tail door;

[0004] The primary locking device includes an opening cylinder hinged to the tailgate, the other end of the opening cylinder being hinged to a locking hook, the locking hook being mounted on the side wall of the box via a rotating shaft, and a locking shaft being provided on the tailgate to cooperate with the locking hook.

[0005] The secondary locking device includes a cylinder seat fixedly installed at the bottom of the box body. A locking cylinder is horizontally fixedly installed on the cylinder seat. Both ends of the locking cylinder are respectively hinged to the second locking hook. The second locking hook is installed at the bottom of the box body through the second rotating shaft. The bottom of the tailgate is provided with the second locking shaft that cooperates with the second locking hook.

[0006] In order to limit the stroke of the opening cylinder and prevent it from damaging the locking shaft by excessive stroke, a limit shaft is provided on the side wall of the housing, and an extension end that cooperates with the limit shaft is provided on the locking hook.

[0007] The beneficial effects of this utility model are:

[0008] 1. This design incorporates a two-stage locking device at the bottom of the container and the tailgate, which can better lock the tailgate in place, preventing gaps between the container and the tailgate, preventing leakage of garbage or sewage, and avoiding secondary pollution to the environment.

[0009] 2. This design also includes a limit shaft, which can effectively limit the retraction stroke of the opening cylinder, preventing excessive retraction stroke from damaging the locking hook and locking shaft, and extending their service life. Attached Figure Description

[0010] To more clearly illustrate the technical solutions in the embodiments of this utility model or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0011] Figure 1 This is a schematic diagram of the structure of the first-stage locking device of this utility model;

[0012] Figure 2 This is a schematic diagram of the two-stage locking device of this utility model.

[0013] In the diagram: 1. Fixed hinge; 2. Rotary hinge; 3. Tailgate; 4. Locking hook 1; 5. Locking shaft 1; 6. Rotary shaft 1; 7. Limiting shaft; 8. Opening cylinder; 9. Locking hook 2; 10. Locking shaft 2; 11. Rotary shaft 2; 12. Rubber pad; 13. Locking cylinder; 14. Box body; 15. Cylinder seat. Detailed Implementation

[0014] 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.

[0015] exist Figures 1 to 2 Among them, a two-stage locking device for the tail door of a garbage bin is provided, comprising a bin body 14, a fixed hinge 1 and a rotating hinge 2 connected to the fixed hinge 1 are fixedly installed at the top of the tail of the bin body 14, the rotating hinge 2 is fixedly connected to the tail door 3, a primary locking device is provided on both sides of the bin body 14 and the tail door 3, a secondary locking device is provided at the bottom of the bin body 14 and the tail door 3, and a rubber pad 12 is fixedly provided on the contact surface of the bin body 14 and the tail door 3;

[0016] The primary locking device includes an opening cylinder 8 hinged to the tailgate 3. The other end of the opening cylinder 8 is hinged to a locking hook 4. The locking hook 4 is mounted on the side wall of the box body 14 via a rotating shaft 6. The tailgate 3 is provided with a locking shaft 5 that cooperates with the locking hook 4.

[0017] The secondary locking device includes a cylinder seat 15 fixedly installed at the bottom of the housing 14. A locking cylinder 13 is horizontally fixedly installed on the cylinder seat 15. Both ends of the locking cylinder 13 are respectively hinged to the locking hook 9. The locking hook 9 is installed at the bottom of the housing 14 through a rotating shaft 11. The bottom of the tailgate 3 is provided with a locking shaft 10 that cooperates with the locking hook 9.

[0018] Furthermore, a limiting shaft 7 is provided on the side wall of the housing 14, and an extension end that cooperates with the limiting shaft 7 is provided on the locking hook 4.

[0019] When the tailgate 3 needs to be opened for loading and unloading garbage, the locking cylinder 13 extends 1, pushing the locking hook 2 9 to rotate around the rotating shaft 2 11, and the locking hook 2 9 disengages from the locking shaft 2 10; the piston end of the opening cylinder 8 begins to extend, driving the locking hook 1 4 to rotate counterclockwise around the rotating shaft 1 6. At this time, the locking hook 1 4 disengages from the locking shaft 1 5, and the opening cylinder 8 continues to extend, opening the tailgate 3. The stroke of the opening cylinder 8 can be adjusted as needed, thereby effectively controlling the size of the tailgate opening angle.

[0020] When the tailgate 3 needs to be locked and closed, the hydraulic cylinder 8 is retracted, pulling the tailgate 3 to close. At the same time, the locking hook 4 is pulled to rotate clockwise around the rotating shaft 6. When the tailgate 3 is closed, the locking hook 4 simultaneously hooks the locking shaft 5, locking the tailgate 3. The locking cylinder 13 is retracted until the locking hook 10 hooks the locking shaft 10, performing a secondary locking of the tailgate.

[0021] In the description of this utility model, it should be understood that the terms "bottom", "one end", "top", "middle", "other end", "upper", "side", "inner", etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the drawings, and are only for the convenience of describing this utility model and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of this utility model.

[0022] 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 two-stage locking device for the tail door of a garbage bin, comprising a bin body (14), wherein a fixed hinge (1) and a rotating hinge (2) connected to the fixed hinge (1) are fixedly installed on the top of the tail of the bin body (14), and the rotating hinge (2) is fixedly connected to the tail door (3), characterized in that: The box (14) and the tailgate (3) are respectively provided with a first-level locking device on both sides, and the box (14) and the tailgate (3) are provided with a second-level locking device at the bottom. A rubber pad (12) is fixedly provided on the contact surface of the box (14) and the tailgate (3). The first-level locking device includes an opening cylinder (8) hinged to the tailgate (3), the other end of the opening cylinder (8) is hinged to a locking hook (4), the locking hook (4) is mounted on the side wall of the box (14) via a rotating shaft (6), and the tailgate (3) is provided with a locking shaft (5) that cooperates with the locking hook (4). The secondary locking device includes a cylinder seat (15) fixedly installed at the bottom of the housing (14). A locking cylinder (13) is horizontally fixedly installed on the cylinder seat (15). The two ends of the locking cylinder (13) are respectively hinged to the locking hook (9). The locking hook (9) is installed at the bottom of the housing (14) through the rotating shaft (11). The bottom of the tailgate (3) is provided with a locking shaft (10) that cooperates with the locking hook (9).

2. The two-stage locking device for the tailgate of a garbage bin according to claim 1, characterized in that: The side wall of the housing (14) is provided with a limiting shaft (7), and the locking hook (4) is provided with an extension end that cooperates with the limiting shaft (7).

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