CN220742823U - Automatic locking device for rear door of dump truck - Google Patents
Automatic locking device for rear door of dump truck Download PDFInfo
- Publication number
- CN220742823U CN220742823U CN202321270348.3U CN202321270348U CN220742823U CN 220742823 U CN220742823 U CN 220742823U CN 202321270348 U CN202321270348 U CN 202321270348U CN 220742823 U CN220742823 U CN 220742823U
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- Prior art keywords
- self
- pull rods
- rear door
- cargo box
- lock
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- 230000007246 mechanism Effects 0.000 claims abstract description 19
- 238000004519 manufacturing process Methods 0.000 abstract description 6
- 238000007789 sealing Methods 0.000 abstract description 5
- 230000009471 action Effects 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
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- Lock And Its Accessories (AREA)
Abstract
The utility model discloses an automatic locking device for a rear door of a dump truck, which comprises a plurality of self-locking pull rods, wherein one ends of the self-locking pull rods are hinged with a cargo box bottom plate, the other ends of the self-locking pull rods are hinged with a lock hook rotating mechanism, the lock hook rotating mechanism is connected with a plurality of lock hooks, the lock hook rotating mechanism is arranged on a truck frame, springs are respectively connected between each self-locking pull rod and the cargo box bottom plate, and when the cargo box is lifted, the self-locking pull rods move backwards under the tensile force of the springs to drive the lock hook rotating mechanism to rotate so as to enable the lock hooks to rotate to release the rear door of the cargo box; when the cargo box is not lifted, the self-locking pull rods move forwards to overcome the tensile force of the springs, and drive the latch hook rotating mechanism to rotate, so that the latch hooks rotate to lock the rear door of the cargo box. The automatic locking device for the rear door of the dump truck has the advantages of simple structural design, low dead weight, easy manufacture, low cost, convenient operation and good sealing effect.
Description
Technical Field
The utility model relates to the technical field of dumpers and dump semi-trailers, in particular to an automatic locking device for a rear door of a dumper.
Background
The existing dump truck container rear door is generally locked by two locks. The lockset adopts a chain tightening self-locking hook structure. The dead weight of the lockset is large, and the sealing effect of the rear door locked by adopting two locksets is relatively poor.
How to design an automatic locking device for the rear door of the dump truck, which can solve the technical problems, is a subject of intensive research by the inventor.
Disclosure of Invention
The utility model aims to provide an automatic locking device for a rear door of a dump truck, which has the advantages of simple structural design, low dead weight, easy manufacture, low cost, convenient operation and good sealing effect.
In order to achieve the above object, the technical solution of the present utility model is: the automatic locking device for the rear door of the dump truck comprises a plurality of self-locking pull rods, wherein one ends of the self-locking pull rods are hinged with a cargo box bottom plate, the other ends of the self-locking pull rods are hinged with a lock hook rotating mechanism, the lock hook rotating mechanism is connected with a plurality of lock hooks, the lock hook rotating mechanism is arranged on a frame, springs are respectively connected between the self-locking pull rods and the cargo box bottom plate, and when the cargo box is lifted, the self-locking pull rods move backwards under the tensile force of the springs to drive the lock hook rotating mechanism to rotate, so that the lock hooks rotate to loosen the rear door of the cargo box; when the cargo box is not lifted, the self-locking pull rods move forwards to overcome the tensile force of the springs, and drive the latch hook rotating mechanism to rotate, so that the latch hooks rotate to lock the rear door of the cargo box.
The utility model discloses an automatic locking device for a rear door of a dump truck, wherein a plurality of bottom plate hinging seats are arranged on a bottom plate of a cargo box, and one ends of a plurality of self-locking pull rods are respectively hinged to the bottom plate hinging seats through pin shafts.
The utility model discloses an automatic locking device for a rear door of a dump truck, wherein a bottom plate rotating arm is hinged to each bottom plate hinging seat through a pin shaft, and is contacted and pressed with a frame when a cargo box is not lifted, and separated from the frame when the cargo box is lifted.
The utility model discloses an automatic locking device for a rear door of a dump truck, wherein a lock hook rotating mechanism comprises a rear self-locking rotating shaft arranged on a frame, a plurality of rotating shaft rotating arms are connected to the rear self-locking rotating shaft, the other ends of a plurality of self-locking pull rods are hinged with one ends of a plurality of rotating shaft rotating arms at corresponding positions, the other ends of a plurality of rotating shaft rotating arms are connected with one ends of a plurality of rotating shaft adjusting pull rods, and the other ends of a plurality of rotating shaft adjusting pull rods are hinged with a plurality of lock hooks.
The utility model discloses an automatic locking device for a rear door of a dump truck, wherein a lock hook comprises a lock hook hinging seat arranged at the rear end of a frame, a hook part is hinged on the lock hook hinging seat through a pin shaft, and the other end of a rotating shaft adjusting pull rod is hinged with one end of the hook part.
The utility model discloses an automatic locking device for a rear door of a dump truck, wherein a hook part is L-shaped, and a pin shaft is arranged at the middle position of the hook part.
After the scheme is adopted, the automatic locking device for the rear door of the dump truck has the advantages of simple structural design, low dead weight, easiness in processing and manufacturing, low manufacturing cost, convenience in operation and good sealing effect, and the rear door of the cargo box is sealed by the plurality of lock hooks.
Drawings
FIG. 1 is a schematic view of the automatic locking device for the rear door of the dump truck in the structure when the rear door of a cargo box is locked;
FIG. 2 is a schematic view of the automatic locking device for the rear door of the dump truck according to the present utility model when the rear door of the cargo box is opened;
fig. 3 is a schematic structural view of an embodiment of the automatic locking device for the rear door of the dump truck for locking the rear door of the cargo box.
The utility model is further illustrated by the following examples in conjunction with the accompanying drawings.
Detailed Description
As shown in fig. 1 to 3, the automatic locking device for the rear door of the dump truck of the present utility model comprises a plurality of self-locking tie rods 1, in this embodiment, the number of the self-locking tie rods 1 is two, one ends of the two self-locking tie rods 1 are hinged with a cargo box bottom plate 2, specifically, two bottom plate hinging seats 3 are welded left and right at the front position of the lower surface of the cargo box bottom plate 2, and one ends of the two self-locking tie rods 1 are respectively hinged with the two bottom plate hinging seats 3 through pin shafts. The two bottom plate hinge bases 3 are respectively hinged with a bottom plate rotating arm 4 through a pin shaft, the bottom plate rotating arm 4 is contacted with and pressed against a cross beam 7 of the frame 6 when the container 5 is not lifted, and is separated from the cross beam 7 when the container 5 is lifted.
The other ends of the two self-locking pull rods 1 are hinged with a latch hook rotating mechanism. Referring to fig. 3, the latch hook rotating mechanism includes a rear self-locking rotating shaft 8 mounted on the frame 6, and the rear self-locking rotating shaft 8 and the cross beam 7 are parallel to each other. The rear self-locking rotating shaft 8 is connected with four rotating shaft rotating arms 9, and the other ends of the two self-locking pull rods 1 are hinged with one ends of the two rotating shaft rotating arms 9 at corresponding positions through pin shafts respectively. The rear parts of the two self-locking pull rods 1 are respectively connected with a tensioning spring 10, and the other end of the tensioning spring 10 is connected with the bottom surface of the cargo box bottom plate 2. The other ends of the four rotating shaft rotating arms 9 are respectively hinged with one ends of four rotating shaft adjusting pull rods 11 through pin shafts, and the other ends of the four rotating shaft adjusting pull rods 11 are respectively hinged with four lock hooks 12 through pin shafts.
The latch hook 12 comprises a latch hook hinging seat 13 arranged on the cross beam 7 at the rear end of the frame 6, a hook part 14 is hinged on the latch hook hinging seat 13 through a pin shaft, the hook part 14 is L-shaped, and the pin shaft is arranged at the middle position of the hook part 14. The other end of the rotating shaft adjusting pull rod 11 is hinged with the lower end of the hook part 14 through a pin shaft.
When the cargo box 5 is not lifted, the cargo box bottom plate 2 and the frame 6 are in a closed state, and the two bottom plate rotating arms 4 are contacted with and pressed against the upper surface of the cross beam 7 of the frame 6. The two self-locking pull rods 1 move forwards to overcome the tension of the tensioning springs 10, the self-locking pull rods 1 pull the rotating shaft rotating arm 9 to rotate, and the container rear door 15 is pressed tightly, so that the locking function of the self-dumping truck container rear door 15 is realized.
When the container 5 lifts, the container 5 is in an open state with the frame 6, the two bottom plate rotating arms 4 are separated from the cross beam 7, the two self-locking pull rods 1 move backwards under the action of the tension force of the tensioning springs 10, the two self-locking pull rods 1 pull the four rotating shaft rotating arms 9 and the self-locking rotating shaft 8 to integrally rotate, the rotating shaft adjusting pull rod 11 moves forwards to push the hook part 14 of the lock hook 12 to rotate, and the container back door 15 is loosened, so that the opening function of the dump truck container back door 15 is realized.
The automatic locking device for the rear door of the dump truck has the advantages of simple structural design, low dead weight, easiness in processing and manufacturing, low manufacturing cost, convenience in operation and good sealing effect, and the rear door 15 of the cargo box is sealed by the hook parts 14 of the four lock hooks 12.
The above examples are only illustrative of the preferred embodiments of the present utility model and are not intended to limit the scope of the present utility model, and various modifications and improvements made by those skilled in the art to the technical solutions of the present utility model should fall within the scope of protection defined by the claims of the present utility model without departing from the spirit of the design of the present utility model.
Claims (6)
1. The automatic locking device for the rear door of the dump truck is characterized by comprising a plurality of self-locking pull rods, wherein one ends of the self-locking pull rods are hinged with a cargo box bottom plate, the other ends of the self-locking pull rods are hinged with a lock hook rotating mechanism, the lock hook rotating mechanism is connected with a plurality of lock hooks, the lock hook rotating mechanism is arranged on a frame, springs are respectively connected between the self-locking pull rods and the cargo box bottom plate, and when the cargo box is lifted, the self-locking pull rods move backwards under the tensile force of the springs to drive the lock hook rotating mechanism to rotate, so that the lock hooks rotate to loosen the rear door of the cargo box; when the cargo box is not lifted, the self-locking pull rods move forwards to overcome the tensile force of the springs, and drive the latch hook rotating mechanism to rotate, so that the latch hooks rotate to lock the rear door of the cargo box.
2. The automatic locking device for the rear door of the dump truck according to claim 1, wherein a plurality of bottom plate hinging seats are arranged on the bottom plate of the cargo box, and one ends of the self-locking pull rods are respectively hinged on the plurality of bottom plate hinging seats through pin shafts.
3. The automatic locking device for the rear door of the dump truck according to claim 2, wherein each of the floor hinge bases is hinged with a floor rotating arm through a pin, and the floor rotating arm is contacted with and pressed against the frame when the cargo box is not lifted and separated from the frame when lifted.
4. The automatic locking device for the rear door of the dump truck according to claim 1, wherein the lock hook rotating mechanism comprises a rear self-locking rotating shaft arranged on the frame, a plurality of rotating shaft rotating arms are connected to the rear self-locking rotating shaft, the other ends of the self-locking pull rods are hinged to one ends of the rotating shaft rotating arms at corresponding positions, the other ends of the rotating shaft rotating arms are connected to one ends of a plurality of rotating shaft adjusting pull rods, and the other ends of the rotating shaft adjusting pull rods are hinged to the lock hooks.
5. The automatic locking device for the rear door of the dump truck according to claim 4, wherein the lock hook comprises a lock hook hinge seat arranged at the rear end of the truck frame, a hook part is hinged on the lock hook hinge seat through a pin shaft, and the other end of the rotating shaft adjusting pull rod is hinged with one end of the hook part.
6. The automatic locking device for a rear door of a dump truck according to claim 5, wherein the hook portion is L-shaped, and the pin is installed at a middle position of the hook portion.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202321270348.3U CN220742823U (en) | 2023-05-22 | 2023-05-22 | Automatic locking device for rear door of dump truck |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202321270348.3U CN220742823U (en) | 2023-05-22 | 2023-05-22 | Automatic locking device for rear door of dump truck |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN220742823U true CN220742823U (en) | 2024-04-09 |
Family
ID=90569725
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202321270348.3U Active CN220742823U (en) | 2023-05-22 | 2023-05-22 | Automatic locking device for rear door of dump truck |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN220742823U (en) |
-
2023
- 2023-05-22 CN CN202321270348.3U patent/CN220742823U/en active Active
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| GR01 | Patent grant | ||
| GR01 | Patent grant |