Safety protection device for rear door of garbage can
By installing protective mounting pins and guard bars between the garbage compartment and the rear door, and utilizing a low-position limiting structure to form rigid support, the safety problem of the garbage truck's rear door when closing is solved, reducing the occurrence of accidents.
Patent Information
- Application Number
- CN202520787665.5
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2025-04-24
- Publication Date
- 2026-03-03
- Estimated Expiration
- 2035-04-24
AI Technical Summary
During the unloading process of garbage trucks, the closing of the rear door can easily lead to accidents causing personal injury or death, and existing technologies lack effective safety protection measures.
A protective mounting pin, connecting sleeve, and protective rod are installed between the garbage compartment and the rear door. The low-position limiting structure ensures that the protective rod remains in a low position when the rear door is closed, forming a rigid support and preventing the rear door from closing directly.
It effectively prevents people from crowding at the back door, significantly reduces accidents and injuries during closure, provides a warning, and ensures the safe closure of the back door.
Smart Images
Figure CN223962662U_ABST
Abstract
Description
Technical Field
[0001] This utility model relates to the field of garbage truck technology, and in particular to a safety protection device for the rear door of a garbage compartment. Background Technology
[0002] The self-loading garbage truck uses a garbage container to hold the collected garbage, which is then transported to a designated location for unloading. During unloading, the rear door of the garbage container is opened, and the garbage is discharged by driving the container to tilt backward or by using an internal ejection mechanism. After unloading, the garbage container or internal ejection mechanism returns to its original position, closing the rear door. The opening and closing of the rear door is controlled by a hydraulic cylinder, and the operation is performed from the front cab. In actual operation, after the garbage is unloaded and the garbage container returns to its original position, the garbage at the unloading opening needs to be manually cleared to ensure the airtightness of the rear door after it is closed. Furthermore, it frequently happens that people inadvertently walk through the open rear door. Since the rear door is located in a blind spot in the cab, the operator in the cab cannot observe situations where people are between the rear door and the unloading opening. Therefore, when closing the rear door, a person may be crushed inside, and the powerful driving force of the hydraulic cylinder can lead to a serious injury or death. Therefore, safety during garbage dumping operations has become a key issue to address in the use of garbage trucks. Although relevant operating procedures have been established to regulate operations, violations are unavoidable in actual operations, thus the risk of injury or death due to the closing of the rear door has not been fundamentally eliminated. Therefore, a method with strict enforcement of the rear door's closure is needed to prevent such accidents. Utility Model Content
[0003] The technical problem to be solved by this utility model is to provide a safety protection device for the rear door of a garbage bin that effectively prevents people from being squeezed through the rear door and significantly reduces injuries and fatalities caused by the rear door closing.
[0004] To solve the above-mentioned technical problems, the technical solution of this utility model is: a safety protection device for the rear door of a garbage compartment, which is installed between the garbage compartment and the rear door, including a protective mounting pin fixedly installed on one side of the rear door, a connecting sleeve rotatably fitted on the protective mounting pin, a protective rod fixedly installed on the connecting sleeve, the protective rod being used to abut against the garbage compartment with its free end lower than the protective mounting pin, a low-position limiting structure fixedly installed on the rear door to limit the low-position of the protective rod; a protective position for the protective rod to abut against on the garbage compartment, and an abutment limiting structure located at the protective position on the garbage compartment.
[0005] As a preferred technical solution, the protective mounting pin includes an mounting section located outside the rear door and a reinforcing section located inside the rear door, and a reinforcing fixing structure is provided between the rear door and the reinforcing section.
[0006] As a preferred technical solution, the protective position is disposed on the rear end face of the garbage container, and the abutment limiting structure includes an abutment limiting plate fixedly disposed on the rear end face of the garbage container and located below the protective position, the abutment limiting plate being disposed obliquely to the rear and downward.
[0007] As a preferred technical solution, a support rib is fixedly provided between the lower side of the abutment limiting plate and the garbage container.
[0008] As a preferred technical solution, the garbage compartment or the rear door is provided with an anti-backward swing structure, which is used to prevent the protective rod from swinging backward.
[0009] As a preferred technical solution, the anti-backward swing structure includes an anti-backward swing baffle fixedly installed on the garbage container and located directly above the abutment limiting structure, the anti-backward swing baffle being arranged obliquely to the rear and downward.
[0010] Due to the adoption of the above technical solution, the safety protection device for the rear door of the garbage compartment is installed between the garbage compartment and the rear door. It includes a protective mounting pin fixedly installed on one side of the rear door, a connecting sleeve rotatably fitted onto the protective mounting pin, and a protective rod fixedly installed on the connecting sleeve. The protective rod is used to abut against the garbage compartment with its free end lower than the protective mounting pin. A low-position limiting structure is fixedly installed on the rear door to restrict the low-position posture of the protective rod. The garbage compartment has a protective position for the protective rod to abut against, and an abutment limiting structure is located at the protective position. When the rear door is opened, the protective rod swings downwards due to its own weight and is ultimately held in a low position by the limiting structure. During the closing process of the rear door, the free end of the protective rod ultimately abuts against the protective position, achieving the purpose of rigidly supporting the rear door and preventing it from closing completely. This effectively prevents people from being squeezed through the rear door, significantly reducing accidents and injuries caused by the rear door closing. Attached Figure Description
[0011] The following figures are intended only to illustrate and explain the present invention and do not limit the scope of the present invention. Wherein:
[0012] Figure 1 This is a schematic diagram of the structure of the rear door when it is closed according to an embodiment of this utility model;
[0013] Figure 2 yes Figure 1 A diagram showing the state of the back door after it is fully opened;
[0014] Figure 3 yes Figure 2 A diagram showing the protective bar against the garbage compartment during the closing process of the rear door.
[0015] Figure 4yes Figure 3 A schematic diagram of the AA structure.
[0016] In the diagram: 1-Garbage container; 2-Rear door; 21-Low-position limiting structure; 3-Protective installation pin; 31-Installation section; 32-Reinforcing section; 33-Reinforcing fixing structure; 4-Connecting sleeve; 5-Protective rod; 51-Protective position; 52-Abutting limiting plate; 53-Abutting support rib; 54-Anti-backward swing baffle. Detailed Implementation
[0017] The present invention will be further described below with reference to the accompanying drawings and embodiments. In the following detailed description, only certain exemplary embodiments of the present invention are described by way of illustration. Undoubtedly, those skilled in the art will recognize that various modifications can be made to the described embodiments without departing from the spirit and scope of the present invention. Therefore, the drawings and description are illustrative in nature and not intended to limit the scope of the claims.
[0018] like Figures 1 to 4 As shown, the safety protection device for the rear door of the garbage compartment is installed between the garbage compartment 1 and the rear door 2, including a protective mounting pin 3 fixedly installed on one side of the rear door 2. In this embodiment, the terms "front," "rear," "left," and "right" refer to the front, rear, left, and right positions of the garbage truck, for the purpose of more clearly explaining the structural principle. Here, "one side" refers to either the left or right side.
[0019] A connecting sleeve 4 is rotatably fitted onto the protective mounting pin 3. A protective rod 5 is fixedly mounted on the connecting sleeve 4. The protective rod 5 rotates around the protective mounting pin 3 via the connecting sleeve 4. The axial position of the connecting sleeve 4 is restricted by radially arranged cotter pins or screws on the protective mounting pin 3, thus enabling its rotational mounting.
[0020] The protective rod 5 is used to abut against the garbage compartment 1 with its free end lower than the protective mounting pin 3. A low-position limiting structure 21 is fixedly provided on the rear door 2 to restrict the low-position posture of the protective rod 5. After the rear door 2 is opened, the protective rod 5 swings downwards due to its own weight and eventually forms a low-position posture under the restriction of the low-position limiting structure 21. Therefore, when the rear door 2 is closed, the free end of the protective rod 5 can abut against the garbage compartment 1, forming rigid support. Wherein, the free end of the protective rod 5 is lower than the protective mounting pin 3 in its low-position posture, which prevents the protective rod 5 from swinging upwards due to the reverse support force of the garbage compartment 1, ensuring its reliable rigid support function. Preferably, the low-position limiting structure 21 restricts the low-position posture formed by the protective rod 5 along the rotational tangential direction of the rear door 2, to reduce the biased force on the protective rod 5 caused by the driving force of the rear door 2 closing, further ensuring the rigid support function of the protective rod 5. In this embodiment, the low-position limiting structure 21 can be implemented by using a stop bar or the like that fixedly welded to the rear.
[0021] Preferably, such as Figure 4 As shown, the protective mounting pin 3 includes a mounting section 31 located outside the rear door 2 and a reinforcing section 32 located inside the rear door 2. A reinforcing fixing structure 33 is provided between the rear door 2 and the reinforcing section 32. With this arrangement, compared to simply welding the protective mounting pin 3 to the outside of the rear door 2, where only the weld is stressed during rigid support, in this embodiment, the protective mounting pin 3 bears the supporting reaction force at two points connected to the rear door 2, and the weld is almost unstressed. Therefore, the protective mounting pin 3 can achieve ideal support strength and withstand the strong driving force of the rear door 2 drive cylinder. For existing rear doors 2 that mostly have a box-shaped structure, through holes can be machined inside and outside the box-shaped structure. After the protective mounting pin 3 passes through the above-mentioned through holes, welding can be performed inside and outside to achieve the above-mentioned internal and external connection. The through holes and welding inside constitute the reinforcing fixing structure 33. Of course, if the rear door 2 does not have a box-shaped structure, an ear plate can be additionally welded inside the rear door 2 to serve as the reinforcing fixing structure 33.
[0022] The garbage compartment 1 is provided with a protective position 51 for the protective rod 5 to abut against. A stop-limiting structure is provided at the protective position 51 on the garbage compartment 1 to ensure the reliability of the protective rod 5 when it abuts. In this embodiment, the protective position 51 is located on the rear end face of the garbage compartment 1, that is, the protective position 51 is formed by finding the position where the free end of the protective rod 5 abuts against the protective rod from the rear end face of the garbage compartment 1. Correspondingly, the stop-limiting structure includes a stop-limiting plate 52 fixedly disposed on the rear end face of the garbage compartment 1 and located below the protective position 51. The stop-limiting plate 52 is obliquely downward and backward. When the free end of the protective rod 5 is lower than the protective mounting pin 3, the stop-limiting plate 52 located below the protective position 51 can provide a limiting effect. The oblique downward and backward orientation of the stop-limiting plate 52 facilitates the smooth abutment of the free end of the protective rod 5 against the protective position 51 when the rear door 2 is closed.
[0023] Preferably, a support rib 53 is fixedly provided between the lower side of the abutment limiting plate 52 and the garbage container 1 to improve the support strength of the abutment limiting plate 52 when it is positioned on the limiting guard rod 5.
[0024] Preferably, the garbage compartment 1 or the rear door 2 is provided with an anti-sway structure to prevent the guard rod 5 from swinging backward. In this embodiment, the anti-sway structure includes an anti-sway baffle 54 fixedly mounted on the garbage compartment 1 and located directly above the abutment limiting structure. The anti-sway baffle 54 is angled downward and backward. Since the abutment limiting structure is located on the rear end face of the garbage compartment 1, and the anti-sway baffle 54 is also located on the rear end face of the garbage compartment 1, a groove-shaped structure is formed between the anti-sway baffle 54 and the rear end face of the garbage compartment 1. When the rear door 2 is fully closed, the free end of the guard rod 5 is within this groove-shaped structure and is not affected by driving bumps, maintaining a stable retraction posture.
[0025] In this embodiment, when the rear door 2 is closed, the free end of the protective rod 5 is positioned at the anti-backswing baffle 54. The restriction of the anti-backswing baffle 54 also causes the protective rod 5 to be in an upwardly angled posture. When the rear door 2 is opened, the protective rod 5 will swing downwards due to its own weight. Even if the protective rod 5 does not swing downwards smoothly due to partial jamming or frictional resistance, the restriction of the anti-backswing baffle 54 will still create a passive driving force to push the protective rod 5 and release the jamming and resistance, allowing the protective rod 5 to swing downwards smoothly. The protective rod 5 is finally in a low-position posture restricted by the low-position limiting structure 21.
[0026] When the rear door 2 closes, the protective rod 5 moves closer to the garbage compartment 1 along with the rear door 2, and the free end of the protective rod 5 finally abuts against the protective position 51, forming a rigid support. At this time, if there are people between the rear door 2 and the garbage compartment 1, the rigid support of the protective rod 5 can prevent further crowding into the rear door 2, which helps to significantly reduce the risk of injury or death when the rear door 2 closes. Of course, the metallic impact sound of the free end of the protective rod 5 abutting against the protective position 51 can also serve as a warning to people between the rear door 2 and the garbage compartment 1, allowing them to safely exit the space between the rear door 2 and the garbage compartment 1. Furthermore, regardless of whether the personnel were originally outside the rear door 2 and garbage compartment 1, or between the rear door 2 and garbage compartment 1, they can still be aware that the rear door 2 is closing. Therefore, the operator in the cab can be notified to open the rear door 2 to a certain degree. The operator then manually raises the protective rod 5 until its free end is higher than the protective mounting pin 3. The operator then notifies the operator in the cab to continue closing the rear door 2. After the free end of the protective rod 5 abuts against the rear end face of the garbage compartment 1, the operator releases the lifting of the protective rod 5. Under the driving force of the rear door 2 drive cylinder, the protective rod 5 continues to swing upward and is in the position of the anti-backswing baffle 54 when the rear door 2 is fully closed, achieving the retracted posture.
[0027] In the above process, this embodiment provides the protective mounting pin 3 and protective rod 5 on one side of the rear door 2. These structures provide safety protection while allowing a single person to easily lift the protective rod 5 on that side, ensuring the rear door 2 can be closed and enabling the protective rod 5 to retract during the closing process. Furthermore, this embodiment utilizes the existing basic structure of the garbage truck, facilitating direct modification and use on existing garbage trucks.
[0028] The foregoing has shown and described the basic principles, main features, and advantages of this utility model. Those skilled in the art should understand that this utility model is not limited to the above embodiments. The embodiments and descriptions in the specification are merely illustrative of the principles of this utility model. Various changes and modifications can be made to this utility model without departing from its spirit and scope, and all such changes and modifications fall within the scope of the claims. The scope of protection of this utility model is defined by the appended claims and their equivalents.
Claims
1. A safety protection device for the rear door of a garbage container, installed between the garbage container and the rear door, characterized in that: The device includes a protective mounting pin fixedly installed on one side of the rear door, a connecting sleeve rotatably fitted on the protective mounting pin, a protective rod fixedly installed on the connecting sleeve, the protective rod being used to abut against the garbage bin with its free end lower than the protective mounting pin, a low-position limiting structure fixedly installed on the rear door to restrict the low-position of the protective rod; a protective position for the protective rod to abut against on the garbage bin, and an abutment limiting structure located at the protective position on the garbage bin.
2. The safety protection device for the rear door of the garbage compartment as described in claim 1, characterized in that: The protective mounting pin includes a mounting section located outside the rear door and a reinforcing section located inside the rear door, and a reinforcing fixing structure is provided between the rear door and the reinforcing section.
3. The safety protection device for the rear door of the garbage compartment as described in claim 1, characterized in that: The protective position is located on the rear end face of the garbage container, and the abutment limiting structure includes an abutment limiting plate fixedly installed on the rear end face of the garbage container and located below the protective position, the abutment limiting plate being arranged obliquely to the rear and downward.
4. The safety protection device for the rear door of the garbage compartment as described in claim 3, characterized in that: A support rib is fixedly provided between the lower side of the abutment limiting plate and the garbage container.
5. The safety protection device for the rear door of the garbage compartment as described in claim 1, characterized in that: The garbage compartment or the rear door is equipped with an anti-backward swing structure, which is used to prevent the protective rod from swinging backward.
6. The safety protection device for the rear door of the garbage compartment as described in claim 5, characterized in that: The anti-backward swing structure includes an anti-backward swing baffle fixedly installed on the garbage container and located directly above the abutment limiting structure, the anti-backward swing baffle being arranged obliquely to the rear and downward.