A sweeper and its staggered double-seal structure

Abstract

This utility model discloses a sweeper and its staggered double-seal structure, including a garbage bin with upper and lower layers. A movable rear door and the upper end of a hydraulic cylinder are hinged to the upper part of the bin. A third hinge mounting ring is provided at the lower end of the hydraulic cylinder to cooperate with the outer side of the movable rear door, so that the lower end of the hydraulic cylinder is hinged to the middle of the outer side of the movable rear door. A vertically retractable locking pin is provided on the movable rear door, and a locking plate perpendicular to the closed state of the movable rear door is provided on the garbage bin. The movable rear door is locked by pushing the locking pin into the hole in the locking plate. Sealing rings are provided for the upper and lower layers of the garbage bin. This utility model provides a new locking structure and, through a double-seal and staggered structure, completely separates the upper and lower layers of the garbage bin structurally. This ensures that even if the upper layer leaks, it will not affect the lower layer, thereby improving the sealing effect.

Description

Technical Field

[0001] This utility model relates to the field of sweeper technology, specifically, to a sweeper and its staggered double-seal structure. Background Technology

[0002] Sanitation sweeper trucks, generally referring to road sweepers, washing sweepers, and vacuum trucks, are vehicles that collect road garbage using a combination of sweeping brushes and negative pressure suction, or purely negative pressure suction. Negative pressure suction uses a power unit to drive a high-pressure centrifugal fan, creating negative pressure and airflow at the suction device (hereinafter referred to as the suction nozzle). This allows the road garbage to reach its suspension velocity and be drawn off the road. After settling and filtration within the sweeper truck's body, the garbage is collected inside the body, while the clean airflow is discharged to the outside of the vehicle through the fan and the exhaust duct at the end.

[0003] The garbage bin of a sweeper is a garbage storage device. Due to the variety of garbage types, the garbage bin of a sweeper is generally a sealed structure. Since the garbage inside the garbage bin needs to be tipped over for unloading, the garbage bin usually has a movable rear door. The rear door and the garbage bin also need to be kept sealed. Otherwise, the negative pressure inside the bin cannot be guaranteed, which will also cause leakage problems.

[0004] Due to the different types of garbage and cleaning modes, sweeping vehicles can operate in various ways, such as dry sweeping, wet sweeping, and washing sweeping. The garbage can also be classified into different types, such as sewage, wet garbage, dry garbage, and dust.

[0005] Taking dry sweepers, vacuum sweepers, and all-season sweepers as examples, their garbage bins are usually designed with an upper and lower layer structure due to the types of garbage that are cleaned. The lower layer collects dust during dry operations, while the upper layer collects larger garbage. In addition, these two types of vehicles can also operate in wet conditions. During wet operations, the upper layer collects sewage and damp garbage, while the lower layer no longer collects garbage.

[0006] The above-mentioned three types of sweeping vehicles have a two-layer box design, with the lower box also connected to the dust removal equipment. During dry operation, since there is no water for dust suppression, the dust sucked up needs to be filtered by the dust removal equipment before it can be discharged into the atmosphere. Otherwise, it will cause secondary pollution. The dust removal equipment is usually not allowed to get wet or damp, otherwise it will affect its air permeability. Therefore, during wet operation, the water from the upper layer of garbage in the above three types of sweeping vehicles is not allowed to enter the lower box, otherwise it will cause damage to the dust removal equipment. Utility Model Content

[0007] The purpose of this utility model is to provide a sweeper and its staggered double-seal structure to solve the problem of water seepage from the upper layer to the lower layer in the prior art. The staggered double-seal structure effectively seals the upper and lower layers of the sweeper's layered garbage bins. It also provides a new locking structure to lock the movable rear door of the sweeper shell.

[0008] The present invention solves the above problems through the following technical solution:

[0009] A sweeper includes a garbage bin with upper and lower layers. The garbage bin is a rigid structure with a hinged movable rear door and the upper end of a hydraulic cylinder. The lower end of the hydraulic cylinder is provided with a third hinge mounting ring that cooperates with a hinge mounting part located at the center of the outer side of the movable rear door, so that the lower end of the hydraulic cylinder is hinged to the center of the outer side of the movable rear door. When the lower end of the hydraulic cylinder retracts, it pulls the movable rear door to open it away from the garbage bin, and vice versa. The movable rear door is provided with a vertically retractable locking pin. The garbage bin below the movable rear door is provided with a locking plate perpendicular to the closed state of the movable rear door. The movable rear door is locked by pushing the locking pin into the hole of the locking plate. Sealing rings are provided for the upper and lower layers of the garbage bin.

[0010] As a further improvement, the upper end of the movable rear door is provided with no less than two first hinge mounting rings that are hinged to the garbage bin; the upper end of the hydraulic cylinder is provided with no less than two second hinge mounting rings that are hinged to the garbage bin.

[0011] As a further improvement, the locking pin is actuated by a hydraulic cylinder.

[0012] As a further improvement, the hinged mounting component includes two mounting pieces arranged in pairs, and the mounting pieces have grooved waist-shaped holes. The two ends of the hinged connector are respectively installed in the two grooved waist-shaped holes so that the lower end of the hydraulic cylinder can be hingedly installed by passing the hinged connector through the third hinged mounting ring; and one end of the locking pin is connected to the hinged connector.

[0013] As a further improvement, a U-shaped connector is also installed on the hinge connector. The open end of the U-shaped connector is located on the left and right sides of the third hinge mounting ring, and the closed end of the U-shaped connector is connected to a locking pin, so that the upper end of the locking pin is hinged to the hydraulic cylinder. The hinge point can slide linearly in the grooved hole on the movable rear door, so that the locking pin is pushed into the hole of the lock plate by the hydraulic cylinder to lock the movable rear door.

[0014] As a further improvement, the angle between the side of the locking pin away from the trash can and the plane of the movable rear door in the closed state gradually increases from top to bottom, so that when the movable rear door is locked, it will be pressed down towards the trash can, ensuring that the movable rear door is in the closed state.

[0015] As a further improvement, a water drain pipe is provided on the movable rear door, and a water butterfly valve is provided on the water drain pipe.

[0016] As a further improvement, a rear door filter screen is provided on the inside of the movable rear door relative to the drain pipe.

[0017] As a further improvement, the movable rear door is also equipped with several transparent observation windows for observing the sewage level in the trash can.

[0018] Furthermore, this utility model also solves the above problems through the following technical solutions:

[0019] A staggered double-seal structure for a sweeper is located on the rear side of the movable rear door of the sweeper as described above. It includes sealing rings respectively provided for an upper layer and a lower layer of the garbage bin formed by the garbage bin. The sealing rings are respectively fitted onto the protrusion on the rear side of the movable rear door, and there is a gap between the two sealing rings. The upper layer and the lower layer of the garbage bin are stepped so that the sealing fronts formed by the two sealing rings are staggered.

[0020] Compared with the prior art, this utility model has the following advantages and beneficial effects:

[0021] (1) This utility model completely separates the upper and lower compartments of the garbage bin by means of double sealing and staggered structure. In this way, even if the upper layer leaks, it will not affect the lower layer, thereby improving the sealing effect.

[0022] (2) The present invention provides a new locking structure for locking a movable rear door, wherein the locking action and the closing of the movable rear door are completed synchronously by the same hydraulic cylinder, thereby improving the compatibility. Furthermore, this structure can further ensure the locking and sealing effect and improve the locking efficiency. Attached Figure Description

[0023] Figure 1 This is a side view of a sweeper according to the present invention;

[0024] Figure 2 This is a side view of a staggered double-seal structure for a sweeper according to the present invention;

[0025] Figure 3 This is a schematic diagram of the movable rear door of this utility model;

[0026] Figure 4 This is a schematic diagram of the inner structure of the movable rear door of this utility model.

[0027] Reference numerals: 1. Trash can; 2. Movable rear door; 3. Locking pin; 4. Hydraulic cylinder; 5. Locking plate; 6. Second sealing ring; 7. First sealing ring; 8. Transparent observation window of rear door; 9. Drain butterfly valve; 10. Rear door filter; 11. Sealing surface; A. Upper layer of trash can; B. Lower layer of trash can; C. First hinge point; D. Second hinge point; E. Third hinge point. Detailed Implementation

[0028] 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.

[0029] Example:

[0030] Combined with appendix Figure 1-4 As shown, a sweeper includes a garbage bin 1 with upper and lower layers. The garbage bin 1 is a rigid structure, and a movable rear door 2 and a hydraulic cylinder 4 are hinged to it. In this embodiment, the upper end of the movable rear door 2 is provided with at least two first hinge mounting rings that hinge with the garbage bin. The movable rear door 2 and the garbage bin 1 are hinged through a first hinge point C, so that the movable rear door 2 can rotate relative to the garbage bin around the first hinge point C. The upper end of the hydraulic cylinder 4 is provided with at least two second hinge mounting rings that hinge with the garbage bin. The hydraulic cylinder 4 and the garbage bin 1 are hinged through the second hinge point C. The hydraulic cylinder 4 is hinged at hinge point D so that it can rotate relative to the garbage bin around the second hinge point D with a certain amount of movement. The lower end of the hydraulic cylinder 4 is provided with a third hinge mounting ring that cooperates with the hinge mounting part provided on the outer middle of the movable rear door 2. The lower end of the hydraulic cylinder 4 and the garbage bin 1 are hinged at the third hinge point E so that the hydraulic cylinder 4 can rotate relative to the garbage bin around the third hinge point E. When the lower end of the hydraulic cylinder 4 retracts, it pulls the movable rear door 2 to open away from the garbage bin 1 around the first hinge point C, thereby opening the movable rear door 2; conversely, it closes the movable rear door 2.

[0031] To further ensure the stability of the movable rear door 2 in the closed state, a locking pin 3 that can extend and retract vertically is provided on the movable rear door 2; a locking plate 5 that is perpendicular to the movable rear door 2 in the closed state is provided on the trash can 1 located below the movable rear door 2. The movable rear door is locked by pushing the locking pin 3 into the hole of the locking plate 5.

[0032] Preferably, the locking pin is actuated by a hydraulic cylinder 4, with the following specific structure:

[0033] The hinged mounting component includes two paired mounting pieces, each with a grooved, waist-shaped hole. The two ends of the hinged connector are respectively installed within the two grooved, waist-shaped holes, allowing the hinged connector to pass through the third hinged mounting ring to hinge the lower end of the hydraulic cylinder 4. A U-shaped connector is also installed on the hinged connector. The open end of the U-shaped connector is located on the left and right sides of the third hinged mounting ring, and the closed end of the U-shaped connector is connected to a locking pin 3. The hydraulic cylinder 4 pushes the locking pin 3 into the hole of the lock plate 5, locking the movable rear door. The U-shaped connector is located between the two paired mounting pieces, restricting the movement direction of the locking pin 3. More preferably, the locking pin 3 is also provided with a limiting connecting piece, which is perpendicular to the movement direction of the locking pin 3 and abuts against the movable rear door 2 to ensure that the locking pin 3 can be accurately inserted into the hole of the lock plate 5.

[0034] This allows the upper end of the locking pin 3 to be hinged to the hydraulic cylinder 4, and the hinge point can slide linearly in the groove-shaped hole on the movable rear door 2. Preferably, the angle between the side of the locking pin 3 away from the garbage bin 1 and the plane of the movable rear door in the closed state gradually increases from top to bottom, so that when the movable rear door is locked, it will press the movable rear door 2 down towards the garbage bin 1, ensuring that the movable rear door 2 is in the closed state.

[0035] In an optional embodiment, a staggered double-seal structure for a sweeper is located behind the movable rear door 2. A first sealing ring 7 and a second sealing ring 6 are respectively provided for the upper layer A and lower layer B of the garbage bin. Figure 4 As shown, the first sealing ring 7 and the second sealing ring 6 are designed to be a full circumference and are respectively fitted onto the protrusion on the rear side of the movable rear door 2. When the locking pin 3 locks the movable rear door, the movable rear door 2 is pressed down towards the garbage bin 1, and the upper layer A and the lower layer B of the garbage bin are completely separated by the first sealing ring 7 and the second sealing ring 6, and the seal is tight.

[0036] Furthermore, there is a gap between the first sealing ring 7 and the second sealing ring 6, and the upper layer A and lower layer B of the garbage bin are stepped, so that the sealing surfaces formed by the second sealing ring 6 and the first sealing ring 7 are staggered. If water leaks between the first sealing ring 7 and its sealing surface 11 in the upper layer A of the garbage bin, the water will flow down from the staggered edge and will not enter the sealing surface 11 of the second sealing ring 6. By using a double-sealed and staggered structural design, the upper and lower layers of the garbage bin are completely structurally separated, so that even if the upper layer leaks, it will not affect the lower layer.

[0037] As a preferred option, refer to Figure 3The movable rear door 2 is equipped with a drain pipe and a drain butterfly valve 9. When the sewage level in the garbage bin 1 is too high for the vehicle to operate, the sewage will be discharged by opening the drain butterfly valve 9 on the movable rear door 2. Furthermore, a rear door filter screen 10 is located on the inside of the movable rear door 2, opposite the drain pipe. Because of the presence of the rear door filter screen 10, the sewage will be filtered before discharge, avoiding garbage contamination. The movable rear door 2 is also equipped with several transparent rear door observation windows 8, so that the height of the sewage in the garbage bin 1 can be observed through the transparent rear door observation windows 8.

[0038] Although the present invention has been described herein with reference to illustrative embodiments, the above embodiments are merely preferred embodiments of the present invention, and the implementation of the present invention is not limited to the above embodiments. It should be understood that those skilled in the art can design many other modifications and implementations, which will fall within the scope and spirit of the principles disclosed in this application.

Claims

1. A sweeper characterized by comprising: The device includes a two-tiered garbage bin with a rigid structure. A movable rear door and a hydraulic cylinder are hinged to the top of the bin. The lower end of the hydraulic cylinder has a third hinge mounting ring that mates with a hinge mounting piece located at the center of the outer side of the movable rear door, so that the lower end of the hydraulic cylinder is hinged to the center of the outer side of the movable rear door. When the lower end of the hydraulic cylinder retracts, it pulls the movable rear door to open it away from the garbage bin. The movable rear door is equipped with a retractable locking pin, and the trash can below the movable rear door is equipped with a locking plate perpendicular to the closed state of the movable rear door. The movable rear door is locked by pushing the locking pin into the hole of the locking plate. Sealing rings are provided for the upper and lower layers of the trash can.

2. The sweeper vehicle of claim 1, wherein The upper end of the movable rear door is provided with no less than two first hinge mounting rings that are hinged to the garbage bin; the upper end of the hydraulic cylinder is provided with no less than two second hinge mounting rings that are hinged to the garbage bin.

3. A sweeper according to claim 1, characterized in that, The locking pin is pushed by a hydraulic cylinder.

4. The sweeper vehicle of claim 3, wherein, The hinged mounting component includes two mounting pieces arranged in pairs, and the mounting pieces have grooved waist-shaped holes. The two ends of the hinged connector are respectively installed in the two grooved waist-shaped holes so that the lower end of the hydraulic cylinder can be hinged by passing the hinged connector through the third hinged mounting ring; and one end of the locking pin is connected to the hinged connector.

5. The sweeper vehicle of claim 4, wherein, The hinge connector is also equipped with a U-shaped connector. The open end of the U-shaped connector is located on the left and right sides of the third hinge mounting ring. The closed end of the U-shaped connector is connected to a locking pin, so that the upper end of the locking pin is hinged to the hydraulic cylinder. The hinge point can slide linearly in the grooved hole on the movable rear door, so that the locking pin can be pushed into the hole of the lock plate by the hydraulic cylinder to lock the movable rear door.

6. The cleaning vehicle of claim 1, wherein, The angle between the side of the locking pin away from the trash can and the plane of the movable rear door in the closed state gradually increases from top to bottom, so that when the movable rear door is locked, it will press the movable rear door down towards the trash can, ensuring that the movable rear door is in the closed state.

7. The cleaning vehicle according to any one of claims 1 to 6, characterized in that The movable rear door is equipped with a drain pipe, and a butterfly valve is installed on the drain pipe.

8. The sweeper vehicle of claim 7, wherein, A rear door filter is provided on the inside of the movable rear door, relative to the position of the drain pipe.

9. The cleaning vehicle of claim 7, wherein, The movable rear door is also equipped with several transparent observation windows for observing the sewage level in the trash can.

10. A staggered double-seal structure for a sweeper, located behind the movable rear door of a sweeper as described in any one of claims 1-9, characterized in that, This includes sealing rings set separately for the upper and lower layers of the trash can, with the sealing rings respectively fitted onto the protrusions on the rear side of the movable rear door, and a gap between the two sealing rings; the upper and lower layers of the trash can are stepped, so that the sealing surfaces formed by the two sealing rings are staggered.

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