Self-locking mechanism for preventing manual latch hook on rear door of dumper from falling off

Abstract

The self-locking mechanism comprises the manual lock hook, an anti-springboard, a manual lock hook stop pin and a lock hook lock plate, one end of the manual lock hook is hinged to the anti-springboard, the other end of the manual lock hook is rotatably connected to the manual lock hook stop pin in a hung mode, one end of the anti-springboard is fixedly connected to a stand column of the rear door of the dumper, and the other end of the anti-springboard is fixedly connected to the stand column of the rear door of the dumper. One end of the manual lock hook is arranged on a vertical column of the rear door of the dumper, the other end of the manual lock hook is freely suspended above the manual lock hook stop pin, the manual lock hook stop pin is fixedly connected to the rear door of the dumper, the lock hook lock plate is installed on the vertical column of the rear door of the dumper in a swinging mode, and the lock hook lock plate can be downwards pressed open by the manual lock hook to enable the manual lock hook to be hung on the manual lock hook stop pin. And the manual lock hook can be locked after being hung on the manual lock hook stop pin, so that the manual lock hook cannot be ejected upwards to be separated from the manual lock hook stop pin. The utility model has the advantages that the structure is compact, simple and durable, and the practicability is good; and the manual lock hook can be locked, so that the manual lock hook cannot automatically bounce out of a locking state.

Description

Technical Field

[0001] The utility model relates to the technical field of locking rear doors of dump trucks, in particular to a self-locking mechanism for preventing a manual locking hook of a rear door of a dump truck from falling off. Background Art

[0002] In the prior art, the manual locking hook of the rear door of a dump truck is easily caused to slide open due to road bumps and the squeezing of cargo during vehicle driving, causing the manual locking hook to lose its locking effect, resulting in a gap between the rear door and the car body, thereby causing material leakage. Utility Model Content

[0003] The utility model aims to provide a self-locking mechanism for preventing a manual lock hook of a rear door of a dump truck from falling off, so as to solve the technical problems existing in the background technology.

[0004] In order to achieve the above purpose, the technical solution adopted by the utility model is as follows:

[0005] The lock hook lock plate can be pressed downward by the manual lock hook to make the manual lock hook be hung on the manual lock hook stop pin, and the manual lock hook can be locked after the manual lock hook is hung on the manual lock hook stop pin, so that the manual lock hook cannot pop up and escape from the manual lock hook stop pin.

[0006] Furthermore, the manual locking hook is hinged on the anti-jump board through a manual locking hook pin.

[0007] Furthermore, the lock hook lock plate is swingably mounted on the rear side surface of the rear door pillar of the dump truck through the lock hook lock plate pin.

[0008] Furthermore, the lock hook lock plate includes a lock hook lock plate body, the upper end of the lock hook lock plate body is rotatably connected to the rear side of the rear door pillar of the dump truck through a lock hook lock plate pin, and the lower end is freely swingably arranged on the rear side of the rear door pillar of the dump truck.

[0009] Furthermore, a boss is provided at one end of the lock hook lock plate body facing the anti-jump plate, and the boss rotates downward and upward together with the lock hook lock plate body, and is used to press the lock hook lock plate open during the manual lock hook locking process so that the manual lock hook is hooked on the manual lock hook stop pin, and to lock the manual lock hook after the manual lock hook is locked, so that the manual lock hook cannot pop up and disengage from the manual lock hook stop pin.

[0010] Furthermore, an inverted L-shaped opening is provided below the boss, and the inverted L-shaped opening is used to pass an anti-jump board and limit the downward and upward rotation angles of the boss.

[0011] Compared with the prior art, the advantages of the utility model are as follows: 1) compact structure, simple and durable, good practicality; 2) can lock the manual lock hook, so that the manual lock hook cannot bounce out of the locked state by itself, effectively avoiding the problem of gap leakage caused by failure of the manual lock hook between the rear door and the car body. BRIEF DESCRIPTION OF THE DRAWINGS

[0012] In order to more clearly illustrate the technical solution in this embodiment, the following is a brief introduction to the drawings required for use in the description of the embodiment. Obviously, the drawings described below are only some embodiments of the utility model. For ordinary technicians in this field, other drawings can be obtained based on these drawings without creative work.

[0013] Figure 1 It is a specific application embodiment of the utility model for the self-locking mechanism of the manual lock hook of the rear door of the dump truck to prevent it from falling off;

[0014] Figure 2 yes Figure 1 Enlarged view of point A in the middle;

[0015] Figure 3 yes Figure 1 A left view of a specific application embodiment;

[0016] Figure 4 yes Figure 3 Enlarged view of point B in the middle;

[0017] Figure 5 yes Figure 1 A rear view of a specific application embodiment;

[0018] Figure 6 yes Figure 5 Enlarged view of point C in the middle;

[0019] Figure 7 is based on Figure 6 The self-locking mechanism used to prevent the manual lock hook of the rear door of the dump truck from falling off is in the use state before the lock hook lock plate is locked;

[0020] Figure 8 is based on Figure 6 The self-locking mechanism used to prevent the manual lock hook of the rear door of the dump truck from falling off is in the use state of the lock hook lock plate in the locking process;

[0021] Fig. 9 is based on Figure 6 The self-locking mechanism used for preventing the manual lock hook of the rear door of the dump truck from falling off is in the second use state when the lock hook lock plate is in the locking process;

[0022] Fig.10 is based on Figure 6 The self-locking mechanism used to prevent the manual lock hook of the rear door of the dump truck from falling off is in the use state after the lock hook lock plate is locked;

[0023] Fig.11 It is a structural schematic diagram of a lock hook and a lock plate;

[0024] Explanation of the reference numerals in the accompanying drawings: 1. Manual lock hook; 2. Manual lock hook pin; 3. Anti-jump board; 4. Manual lock hook stop pin; 5. Lock hook lock plate; 51. Lock hook lock plate body; 52. Boss; 53. Inverted L-shaped opening; 6. Lock hook lock plate pin 7. Dump truck rear door pillar; 8. Dump truck rear door. DETAILED DESCRIPTION

[0025] In order to make the technical means, creative features, objectives and effects achieved by the present invention easy to understand, the following further describes how the present invention is implemented in conjunction with the accompanying drawings and specific implementation methods.

[0026] See also Figures 1 to 10 , which is a specific application embodiment of a self-locking mechanism for preventing a manual lock hook from falling off on a rear door of a dump truck provided by the utility model, comprising a manual lock hook 1, an anti-jumping plate 3, a manual lock hook stop pin 4 and a lock hook lock plate 5; wherein, one end of the manual lock hook 1 is hinged on the anti-jumping plate 3, and the other end is rotatably hung on the manual lock hook stop pin 4, one end of the anti-jumping plate 3 is fixedly connected to a rear door column 7 of the dump truck, and the other end is freely suspended above the manual lock hook stop pin 4 and is connected to the rear door of the dump truck. 8 is parallel, the manual lock hook stop pin 4 is fixedly connected to the rear door 8 of the dump truck, the lock hook lock plate 5 can be swingably installed on the rear door column 7 of the dump truck, and is located on the side of the anti-jump plate 3 facing the rear door 8 of the dump truck, the lock hook lock plate 5 can be pressed downward by the manual lock hook 1, so that the manual lock hook 1 can be hung on the manual lock hook stop pin 4, and the manual lock hook 1 can be locked after the manual lock hook 1 is hung on the manual lock hook stop pin 4, so that the manual lock hook 1 cannot pop up and disengage from the manual lock hook stop pin 4.

[0027] Specifically, as a preferred example of the utility model: the manual lock hook 1 is hinged on the anti-jumping board 3 through the manual lock hook pin 2; wherein, one end of the manual lock hook pin 2 is fixed to the anti-jumping board 3 by welding, and the other end is passed through the manual lock hook 1, and the manual lock hook 1 and the manual lock hook pin 2 are rotationally matched and connected.

[0028] Specifically, as a preferred example of the present invention: the lock hook lock plate 5 is swingably mounted on the rear side of the dump truck rear door pillar 7 through the lock hook lock plate pin 6. Further, in this preferred example, refer to Fig.11 The lock hook lock plate 5 includes a lock hook lock plate body 51, the upper end of the lock hook lock plate body 51 is rotatably connected to the rear side of the rear door pillar 7 of the dump truck through the lock hook lock plate pin 6, and the lower end is freely swingable and arranged on the rear side of the rear door pillar 7 of the dump truck; when in use, the upper end of the lock hook lock plate body 51 can rotate around the lock hook lock plate pin 6, and the lower end can swing back and forth left and right with the rotation of the upper end.

[0029] Furthermore, in the above preferred embodiment, a boss 52 is provided at one end of the lock hook lock plate body 51 facing the anti-jump plate 3, and the boss 52 can rotate downward and upward together with the lock hook lock plate body 51, and is used to press the lock hook lock plate 5 open during the locking process of the manual lock hook 1, so that the manual lock hook 1 is hooked on the manual lock hook stop pin 4, see Figure 8 and Fig. 9 , and after the manual lock hook 1 is locked, the manual lock hook 1 is locked, so that the manual lock hook 1 cannot pop up and disengage from the manual lock hook stop pin 4, see Fig.10 .

[0030] Furthermore, in the above preferred embodiment, an inverted L-shaped opening 53 is provided below the boss 52, and the inverted L-shaped opening 53 is used to pass the anti-jump board 3 and limit the downward and upward rotation angles of the boss 52. When the boss 52 rotates downward to abut against the upper end of the anti-jump board 3 (i.e., the upper inner wall of the inverted L-shaped opening 53 abuts against the upper end of the anti-jump board 3), refer to Figure 8 and Fig. 9 At this time, the boss 52 can no longer continue to rotate downward. This is the maximum angle that the boss 52 can rotate downward. At this time, the lock hook lock plate 5 will not block the manual lock hook 1. At this time, the manual lock hook 1 can smoothly pass over the lock hook lock plate 5 and be hooked to the manual lock hook stop pin 4, so that the rear door is locked by the manual lock hook 1. When the manual lock hook 1 is locked, the lower end of the lock hook lock plate 5 will rotate towards the anti-jump board 3 under the action of gravity until it encounters the anti-jump board 3. When the lower end of the lock hook lock plate 5 rotates towards the anti-jump board 3, the boss 52 will rotate upward synchronously until the lower end of the lock hook lock plate 5 encounters the anti-jump board 3 and stops rotating. See Fig.10 At this time, the boss 52 can rotate upward to the maximum angle. At this time, the lock hook lock plate 5 will form a self-locking structure with the manual lock hook 1 and the anti-jump plate 3, locking the manual lock hook 1 so that the manual lock hook 1 cannot bounce out of the locked state by itself.

[0031] The innovation of the utility model is that: by utilizing the gravity reset effect, during the locking process of the manual lock hook 1, the manual lock hook 1 will first press the lock plate 5 open, so that the manual lock hook 1 can be smoothly hooked to the manual lock hook stop pin 4, so that the rear door 8 is locked by the manual lock hook 1. Figures 7 to 9 After the manual lock hook 1 is hooked to the manual lock hook stop pin 4, the lock plate 5 will return to its original position under the action of its own gravity. Fig.10 At this time, the manual lock hook 1 will form a self-locking structure together with the lock plate 5 and the anti-jump board 3 to lock the manual lock hook 1, so that the manual lock hook 1 cannot bounce out of the locked state by itself. Because after the manual lock hook 1 is locked, the lock plate 5 will return to its original position, and the manual lock hook 1 will be blocked by the lock plate 5. If the manual lock hook 1 wants to move upward, it must bypass the upper end of the lock plate 5, but the lower end of the lock plate 5 will be blocked by the anti-jump board 3, so that the upper end of the lock plate 5 cannot avoid the manual lock hook 1, so that the manual lock hook 1 cannot bounce out of the locked state by itself, and the manual lock hook 1 cannot bounce out by itself after being locked.

[0032] Finally, it should be noted that the above description is only an embodiment of the present utility model, and does not limit the patent scope of the present utility model. Any equivalent structure or equivalent process transformation made using the contents of the present utility model specification and drawings, or directly or indirectly used in other related technical fields, are also included in the patent protection scope of the present utility model.

Claims

1. A self-locking mechanism for preventing the manual lock hook of the rear door of a dump truck from falling off, characterized in that: The invention comprises a manual lock hook (1), an anti-jumping plate (3), a manual lock hook stop pin (4) and a lock hook locking plate (5); one end of the manual lock hook (1) is hinged on the anti-jumping plate (3), and the other end is rotatably hung on the manual lock hook stop pin (4); one end of the anti-jumping plate (3) is fixedly connected to a rear door column (7) of a dump truck, and the other end is freely suspended above the manual lock hook stop pin (4) and parallel to the rear door (8) of the dump truck; the manual lock hook stop pin (4) is fixedly connected to the rear door (8) of the dump truck. The lock hook lock plate (5) is swingably mounted on the rear door pillar (7) of the dump truck and is located on the side of the anti-jump plate (3) facing the rear door (8) of the dump truck. The lock hook lock plate (5) can be pressed downward by the manual lock hook (1) so that the manual lock hook (1) is hooked on the manual lock hook stop pin (4). After the manual lock hook (1) is hooked on the manual lock hook stop pin (4), the manual lock hook (1) can be locked so that the manual lock hook (1) cannot pop up and escape from the manual lock hook stop pin (4).

2. The self-locking mechanism for preventing the manual lock hook of the rear door of a dump truck from falling off according to claim 1, characterized in that: The manual lock hook (1) is hinged on the anti-jump board (3) via a manual lock hook pin (2).

3. The self-locking mechanism for preventing the manual lock hook of the rear door of a dump truck from falling off according to claim 1, characterized in that: The lock hook lock plate (5) is swingably mounted on the rear side surface of the rear door pillar (7) of the dump truck via a lock hook lock plate pin (6).

4. The self-locking mechanism for preventing the manual lock hook of the rear door of a dump truck from falling off according to claim 3 is characterized in that: The lock hook lock plate (5) comprises a lock hook lock plate body (51), the upper end of the lock hook lock plate body (51) is rotatably connected to the rear side of the dump truck rear door pillar (7) through a lock hook lock plate pin (6), and the lower end is freely swingably arranged on the rear side of the dump truck rear door pillar (7).

5. The self-locking mechanism for preventing the manual lock hook of the rear door of a dump truck from falling off according to claim 4 is characterized in that: A boss (52) is provided at one end of the lock hook lock plate body (51) facing the anti-jump plate (3). The boss (52) can rotate downward and upward together with the lock hook lock plate body (51) and is used to press open the lock hook lock plate (5) during the locking process of the manual lock hook (1) so that the manual lock hook (1) is hooked onto the manual lock hook stop pin (4), and to lock the manual lock hook (1) after the manual lock hook (1) is locked so that the manual lock hook (1) cannot pop up and escape from the manual lock hook stop pin (4).

6. The self-locking mechanism for preventing the manual lock hook of the rear door of a dump truck from falling off according to claim 5, characterized in that: An inverted L-shaped opening (53) is provided below the boss (52), and the inverted L-shaped opening (53) is used to pass the anti-jump board (3) and limit the downward and upward rotation angles of the boss (52).

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