Leaf sweeping equipment

Abstract

This utility model provides a leaf sweeping device with a paddle plate, belonging to the field of sweeping equipment. It includes a walking mechanism and a housing with a cavity structure. The housing has an inlet at the bottom and an outlet at the rear. In operation, the inlet is close to the ground as a suction port. A storage structure is connected to the outlet and has a breathable mesh. A paddle plate is disposed in the inner cavity of the housing and is rotatably connected to the housing via a rotating shaft, which is connected to a power unit. In operation, the inlet is close to the ground as a suction port. The paddle plate rotates with the shaft, creating a pressure difference between the inner cavity of the housing and the inlet. This creates a centrifugal force that throws the material sucked in at the inlet towards the outlet, providing the power for the material to be sucked in through the inlet. This pre-adsorption power allows for the adsorption of leaves with a relatively small airflow, reducing dust.

Description

Technical Field

[0001] This utility model relates to the field of cleaning equipment technology, specifically to a leaf sweeping device with a paddle plate. Background Technology

[0002] In urban sanitation and cleaning work, sweeping up leaves, scraps of paper, etc. is a common task. Currently, the main method of machine sweeping is to use street sweepers, which generally have the following problems: The current sweeper method uses a suction port close to the ground to suck the leaves into the storage box under the action of a negative pressure fan. At the same time, a filter is installed in the suction pipe to filter the leaves and avoid excessive dust. In the existing technology, the negative pressure fan is connected to the middle or rear of the suction pipe.

[0003] Given this situation, existing technologies require a certain airflow to achieve negative pressure adsorption of leaves through the suction head. Insufficient airflow affects the adsorption effect, while high airflow, although effective at adsorbing leaves, easily causes lightweight materials like leaves or paper to adhere to and coat the filter element during operation. Even backflushing or tapping the filter element doesn't easily dislodge these materials, significantly reducing the airflow at the negative pressure adsorption port. This results in decreased suction power, impaired leaf adsorption, and poorer sweeping performance, necessitating frequent shutdowns to clean the filter element and impacting work efficiency. While eliminating the filter element structure avoids the negative impact of leaves coating the filter element under high airflow, high-volume negative pressure adsorption leads to severe dust generation problems.

[0004] Given the numerous problems associated with machine cleaning, it is well known that even in some large cities, leaf removal in cities still relies on manual labor, which is labor-intensive and inefficient.

[0005] Therefore, the technical problem to be solved in this application is how to overcome the contradictions in the above-mentioned technical issues, so as to ensure the cleaning effect of leaves while avoiding serious dust problems. Utility Model Content

[0006] This utility model addresses the aforementioned problems in the prior art by providing a paddle-type leaf sweeping device. By setting a paddle structure at a specific position, the use of a filter cartridge is avoided, achieving both good leaf sweeping effect and preventing serious dust generation.

[0007] The technical solution of this utility model to solve the above-mentioned technical problems is as follows: A leaf sweeping device with a lever, which can be a hand-held or ride-on type, includes a walking mechanism, characterized in that it further includes...

[0008] The housing has a cavity structure, with an inlet at the bottom communicating with the inner cavity and an outlet at the rear communicating with the inner cavity. The inlet is close to the ground as a suction port when in operation.

[0009] A storage structure is connected to the outlet, and the storage mechanism has a breathable mesh.

[0010] The baffle is installed in the inner cavity of the housing. The baffle is rotatably connected to the housing via a rotating shaft, which is connected to the power unit that drives its rotation. The baffle rotates with the rotating shaft to create a pressure difference between the inner cavity of the housing and the inlet, and at the same time, it creates a centrifugal force that throws the cleaning material sucked in through the inlet toward the outlet.

[0011] Furthermore, the inner cavity of the housing has a circular cross-section to accommodate the rotation trajectory of the dial plate along the rotating shaft, and the outlet is located in the tangential direction of the housing.

[0012] Alternatively, there may be two housings arranged side by side, intersecting each other with an inner cavity cross-section in the shape of an "8", sharing the same outlet at the intersection and connected to the feed pipe.

[0013] Furthermore, the dial or a portion thereof forms a predetermined angle with the horizontal plane.

[0014] In one embodiment of this utility model, the lever is a strip-shaped plate structure with its side edges bent upward to form an inclined surface.

[0015] In one embodiment of this utility model, the dial plate is an inclined plate structure.

[0016] In another embodiment of this utility model, the side edge of the dial is twisted upward at a predetermined angle.

[0017] Furthermore, a preset distance is maintained between the bottom end of the dial plate and the inlet.

[0018] Furthermore, the housing is connected to the walking mechanism via a lifting mechanism, which is used to adjust the height of the inlet relative to the ground.

[0019] Furthermore, the leaf sweeping device also includes a secondary sweeping brush located on the front side of the frame, specifically a disc-type sweeping brush, which is connected to the housing via a liftable bracket.

[0020] The beneficial effects of this utility model are as follows: This utility model has a housing with an inner cavity, with an inlet at the bottom serving as a suction port. A rotatable baffle structure is located in the inner cavity of the housing, above and near the inlet. In the working state, the inlet is close to the ground as the suction port. The baffle rotates with the shaft, creating a pressure difference between the inner cavity of the housing and the inlet. At the same time, it generates a centrifugal force that throws the cleaned material sucked in at the inlet toward the outlet, which serves as the driving force for the material sucked in through the inlet, thus forming a pre-adsorption power. Under this working principle, it is possible to complete the adsorption of leaves with a relatively small air volume. That is, compared with the existing technology, the required air volume is greatly reduced while achieving the same leaf adsorption effect. Not only can it achieve a good leaf cleaning effect, but it also eliminates the need for a filter element. The reduction in the air volume required for adsorption also greatly reduces the serious dust problem caused by large-volume adsorption. Attached Figure Description

[0021] Figure 1 This is a schematic diagram of the main structure of Embodiment 1 of this utility model;

[0022] Figure 2 yes Figure 1 A schematic diagram of the cross-sectional structure;

[0023] Figure 3 This is a top view of Embodiment 1 of the present invention.

[0024] Figure 4 This is a bottom view of the structure of Embodiment 1 of this utility model;

[0025] Figure 5 This is a cross-sectional structural schematic diagram of Embodiment 1 of this utility model;

[0026] Figure 6 This is a schematic diagram of the connection structure between the lever plate and the power unit in Embodiment 1 of this utility model;

[0027] Figure 7 , Figure 8 This is a schematic diagram of the dial structure in other embodiments of the present invention;

[0028] Figure 9 , Figure 10 This is a schematic diagram of the connection structure between the walking mechanism and the lifting mechanism in Embodiment 1 of this utility model;

[0029] Figure 11 This is a cross-sectional view of the control lever in Embodiment 1 of this utility model;

[0030] Figure 12 This is a three-dimensional structural schematic diagram of Embodiment 2 of this utility model;

[0031] Figure 13 This is a schematic diagram of the main structure of Embodiment 2 of this utility model;

[0032] Figure 14 This is a top view of Embodiment 2 of the present invention;

[0033] Figure 15 This is a bottom view of the structure of Embodiment 2 of this utility model;

[0034] Figure 16 This is a cross-sectional structural schematic diagram of Embodiment 2 of this utility model;

[0035] In the diagram: 1. Frame, 21. Handrail, 22. Driver's seat, 3. Housing, 31. Inlet, 32. Outlet, 33. Guide pipe, 4. Storage mechanism, 41. Mesh, 5. Limiting wheel, 6. Power unit, 61. Shaft, 7. Paddle plate, 71. Inclined surface, 8. Disc cleaning brush, 81. Four-link lifting bracket, 91. Traveling wheel, 911. Front wheel, 912. Rear wheel, 92. Axle, 101. Control lever, 102. Linkage, 103. Front wheel frame, 104. Rear wheel frame, 105. Adjusting plate, 106. Connecting plate, 107. Push rod, 108. Elastic element, 109. Fastener, 110. Connector, 111. Hinge seat, 112. Slot. Detailed Implementation

[0036] The principles and features of this utility model are described below. The embodiments given are only used to explain this utility model and are not intended to limit the scope of this utility model.

[0037] Example 1

[0038] like Figures 1-6 As shown, the leaf sweeping device of this embodiment is a hand-held type, which includes a walking mechanism and a handrail 21 disposed on the rear side of the frame 1. The walking mechanism of this embodiment is a walking wheel 91, including a front wheel 911 and a rear wheel 912. The leaf sweeping device of this embodiment also includes:

[0039] The housing 3 has a cavity structure, with an inlet 31 at the bottom communicating with the inner cavity and an outlet 32 ​​at the rear communicating with the inner cavity. The inlet 31 is close to the ground as a suction port when in operation.

[0040] The storage mechanism 4 is connected to the outlet 32. In this embodiment, the storage mechanism 4 is a storage bag with a breathable mesh 41, i.e., a mesh bag structure. In other embodiments, a storage box structure with a breathable mesh 41 on the side wall can also be used.

[0041] The power unit 6 is located above the housing 3. The output shaft of the power unit 6 is connected to the rotating shaft 61 and extends into the inner cavity of the housing 3 through the top. The power unit 6 can adopt existing technology structures such as gasoline engine, drive motor or hydraulic motor.

[0042] The baffle plate 7 is set in the inner cavity of the housing 3. The bottom end of the baffle plate 7 is left with a preset distance from the inlet 31. The baffle plate 7 is fixedly connected to the rotating shaft 61 along the same axis. The baffle plate 7 rotates with the rotating shaft 61 to form a pressure difference between the inner cavity of the housing 3 and the inlet 31. At the same time, it forms a centrifugal force that throws the sucked-in cleaning material toward the outlet 32, which has a binding effect on the leaves and can effectively complete the cleaning and collection of the leaves.

[0043] The leaf-sweeping device in this embodiment does not include a dust filter structure installed on the air intake passage.

[0044] In operation, this embodiment differs from existing technologies that use a negative pressure fan connected to the middle or rear section of the suction duct as the power source for leaf adsorption. Instead, it uses a rotatable baffle 7 located inside the casing, above and near the inlet, as the power source for material suction, meaning the suction power is pre-positioned. In operation, the inlet 31 is close to the ground as the suction port. The baffle 7 rotates with the shaft 61, creating a pressure difference between the casing cavity and the inlet, specifically a micro-pressure difference. This micro-pressure difference is sufficient to draw the cleaned material into the inlet, and combined with the movement of the baffle 7, it creates a centrifugal force that throws the cleaned material towards the outlet 32, entraining the leaves and ultimately throwing them to the outlet 32, where they enter the storage mechanism 4. This not only allows for the smooth cleaning and collection of broad leaves such as sycamore leaves and narrow leaves such as willow leaves into the storage mechanism 4, but also requires only a small airflow at the inlet to complete leaf adsorption. Furthermore, without using a filter, the reduced airflow required for adsorption significantly reduces the severe dust problem associated with high-volume adsorption.

[0045] In the above embodiments, in addition to the above-mentioned throwing function, the deflector also has the function of crushing leaves, so that the leaves can enter the storage mechanism 4 after being crushed, avoiding the accumulation of larger leaves in the storage mechanism 4. The crushed leaves are more conducive to the storage mechanism 4 storing more materials and extending the cleaning cycle of the storage mechanism 4.

[0046] Practice has shown that the leaf sweeping device using the paddle plate in this embodiment can achieve a good cleaning effect on leaves on the road surface, and there is no need to set up a filter structure. There is only slight dust at the four storage mechanisms, which is a significant improvement compared with the prior art.

[0047] In this embodiment, see Figure 3 and Figure 4 As shown, the inner cavity cross-section (horizontal section) of the housing 3 is circular to accommodate the rotation trajectory of the paddle plate 7 with the rotating shaft 61, and an outlet 32 ​​is provided in the tangential direction of the housing 3 so that the paddle plate 7 can directly deliver the material to the outlet 32.

[0048] In this embodiment, the dial 7 is a strip-shaped structure, see... Figure 6As shown, its side edge bends upward to form an inclined surface 71. Specifically, one side edge at one end bends upward to form an inclined surface 71, and the other side edge at the other end bends upward to form an inclined surface 71. This inclined surface makes the side edge of the deflector 7 form a certain angle with the horizontal plane. As the deflector 7 rotates with the rotating shaft 61, a pressure difference is formed between the inner cavity of the housing 3 and the inlet 31 at the deflector 7, which generates an upward suction force. At the same time, combined with the movement of the deflector 7, a centrifugal force is generated to throw the sucked-in cleaning material toward the outlet 32, and finally the leaves enter the storage mechanism 4 through the outlet 32.

[0049] Besides the strip-shaped plate structure, in other embodiments, the lever 7 can also be configured as an inclined plate structure or a curved plate structure, see [reference needed]. Figure 7 and Figure 8 As shown, the middle part of the baffle plate 7 is fixedly connected to the rotating shaft 61 via a mounting base. Utilizing the baffle plate 7's inclined plate or curved plate structure, the side edge of the baffle plate 7 forms a certain angle with the horizontal plane. As the baffle plate 7 rotates with the rotating shaft 61, a pressure difference is generated between the inner cavity of the housing 3 and the inlet 31 at the baffle plate 7, thus generating an upward suction force. Simultaneously, the movement of the baffle plate 7 creates a centrifugal force that throws the sucked-in cleaning material towards the outlet 32, ultimately allowing the leaves to enter the storage mechanism 4 through the outlet 32.

[0050] In the above embodiments, different toggle structures are exemplified respectively. The entire or part of the toggle is at a certain angle to the horizontal plane, thereby creating a pressure difference between the inner cavity of the housing 3 and the inlet 31 when the toggle rotates with the shaft. However, this is not a limitation on the protection scope of this utility model. Any toggle structure that can create a pressure difference between the inner cavity of the housing 3 and the inlet 31 when rotating, thereby generating an upward suction effect, falls within the protection scope of this utility model.

[0051] Based on the above embodiments, in a preferred embodiment of this utility model, to adjust the height of the inlet 31 relative to the ground, the housing 3 is fixed to the frame 1. The frame 1 is connected to the walking mechanism through a lifting mechanism and controlled by a control lever 101. Specifically, as shown in the attached drawings, the two front wheels 911 are connected by a front wheel frame 103, and the two rear wheels 912 are connected by a rear wheel frame 104. The lower end of the control lever 101 is hinged to a hinge seat 111 fixed to the frame 1. The lifting mechanism includes a connecting rod 102, which is movably connected to the control lever 101. The connecting rod 102 is connected to the front wheels 911 and the rear wheels 912 through the front wheel frame 103 and the rear wheel frame 104, respectively. Both the front wheel frame 103 and the rear wheel frame 104 include an adjusting plate 105, a connecting plate 106, and a connecting member 110. The adjusting plate 105 and the connecting plate 106 are connected by the connecting member 110. In this embodiment, the connecting member 110 is a rod structure. The outer sides of the adjusting plate 105 and the connecting plate 106 of the front wheel frame 103 are rotatably connected to the two front wheels 911 via axles 92, respectively. The outer sides of the adjusting plate 105 and the connecting plate 106 of the rear wheel frame 104 are rotatably connected to the two rear wheels 912 via axles 92, respectively. The connecting rod 102 is hinged to the two adjusting plates 105. The frame 1 is connected by a connecting rod. The component 110 is rotatably connected to the adjusting plate 105, and the frame 1 and the connecting component 110 are fixed relative to each other in the vertical direction. In this embodiment, the adjusting plate 105 is configured as a crank arm structure. The lines connecting the three connection points of the adjusting plate 105 corresponding to the connecting rod 102, the traveling wheel and the connecting component 110 form a triangle. Under the drive of the control lever 1, the connecting rod 102 can drive the two adjusting plates 105 to rotate around the connecting component 110 to adjust the height of the frame 1 relative to the traveling wheel, that is, to adjust the height of the inlet 31 relative to the ground. The control lever 1 is also connected to a first limiting component for limiting its rotation relative to the frame 1.

[0052] During operation, pushing the control lever 101 forward moves the connecting rod 102 forward, which in turn causes the front wheel frame 103 and the rear wheel frame 104 to rotate around the two connecting parts 110. Since the two sets of wheels are always in contact with the ground, during the rotation, the connecting parts 110, along with the machine frame 1 and the housing 3, are lifted as a whole, and the inlet 31 moves away from the ground, facilitating the relocation of the entire machine. Conversely, operating the control lever 101 in the opposite direction adjusts the housing 3 to fall with the frame 1, causing the inlet 31 to move closer to the ground.

[0053] In one specific embodiment, the first limiting member is a locking member 109 fixed on the control lever 101. The hinge seat 111 is provided with a slot 112 for locking the locking member 109. Different slots 112 can be set according to specific adjustment requirements, and the slots 112 of different positions are arranged along the control lever 101 around its rotation direction with the hinge seat 111. Specifically, the locking member 109 is a locking block structure, which protrudes outward from the outer wall of the control lever 101 and is slidably connected to the control lever 101. Inside the control lever 101, on the lower side of the locking member 109, is an elastic member 108 for driving the locking member 109 toward the slot. The elastic member 108 can specifically be a spring structure. The locking member 109 is fixedly connected to a push rod 107, which is axially arranged inside the control lever 101 and has its end protruding outward from the control lever 101. In its natural state, the locking device 109 is engaged in the slot 112 by the force of the spring, which restricts the rotation of the control lever 101. When it is necessary to operate the control lever 101 to rotate around the hinge seat 111, the push rod 107 is pressed down to make the locking device 109 disengage from the slot 112.

[0054] Based on the above embodiments, in a preferred embodiment of this utility model, the lever-type leaf sweeping device further includes a disc-type sweeping brush 8 disposed on the front side of the frame 1. Specifically, it is a disc brush located on the outer front side of the frame 1. The number of disc brushes can be designed as one, or one on each side, depending on actual needs. The function of the disc brush is twofold: first, to clean leaves near the roadside that are inconvenient for the main unit to reach; and second, to concentrate the leaves towards the center in front of the inlet 31 so that the leaves fall into the suction range of the inlet 31. Preferably, the disc-type sweeping brush 8 can be configured to be height-adjustable, lowered during operation and raised during relocation; specifically, it is connected to the frame 1 via a liftable bracket, such as... Figure 1 As shown, the disc cleaning brush 8 is connected to the frame 1 via a four-bar linkage lifting bracket 81.

[0055] Example 2

[0056] The leaf-sweeping device of this embodiment is basically the same as that of Embodiment 1, except that this embodiment is a ride-on model, which includes a walking mechanism, a driver's seat 22 connected to the frame 1, and a control mechanism located in front of the driver's seat 22. See Figures 12-16 .

[0057] To expand the working area, two housings can be provided, arranged side by side, intersecting each other with an "8"-shaped cross-section of the inner cavity. They share a common outlet at the intersection and are connected to the feed guide pipe 33. Similarly, this equipment does not include a dust collector filter structure installed in the suction passage.

[0058] To adjust the height of the inlet 31 relative to the ground, the lifting adjustment example of the housing 3 in this embodiment is as follows: The housing 3 is located below the frame 1. A front connecting rod is hinged to the front side of the housing 3. A front connecting rod seat is fixedly connected to the front end of the front connecting rod 1. The front connecting rod seat is hinged to the frame 1. Rear connecting rods are hinged to the upper left and right sides of the rear of the housing 3. The front end of the rear connecting rod is hinged to the outer side of the frame 1. The main body of the rear connecting rod is hinged to the housing 3. A rear tie rod is hinged to the rear of the rear connecting rod. The rear end of the rear tie rod is hinged to the articulated tie rod. The main body of the articulated tie rod is hinged to the frame 1. A control lever 101 is also hinged above the articulated tie rod. The control lever 101 is located beside the driver's seat 22. The rear connecting rod, rear tie rod, and articulated tie rod are all symmetrical structures, that is, one is provided on each of the left and right sides of the frame 1. The articulated tie rods on the left and right sides are connected as one unit and share the same articulation axis to be hinged to the frame 1. Pulling the control lever causes the articulated tie rod to rotate around its hinge axis with the frame 1, thereby pulling the rear tie rod hinged to the articulated tie rod. The rear tie rod then pulls the rear connecting rod, causing the housing 3 to rise and fall, enabling the housing 3 to be quickly raised for rapid site transfer. In addition, the control lever 101 is also equipped with a locking block 1, which cooperates with the locking seat 1. After the height of the housing 3 is adjusted, the control lever 101 is limited to maintain the stability of the housing 3. The locking block is fixed to the control lever, and the locking seat is fixed to the frame 1. The locking seat has different locking slots in the adjustment direction of the control lever. The locking block engaging different locking slots represents different heights of the housing 3.

[0059] In addition, to prevent the inlet 31 from being adjusted too close to the ground, limit wheels 5 can be installed at the bottom of the front and rear sides of the housing 3 to control the lowering limit.

[0060] Comparative Example 1

[0061] The leaf-sweeping device in this comparative example is basically the same as that in Example 1, except that the storage mechanism 4 in this comparative example is a meshless design, and the air inlet of the storage mechanism 4 is connected to the outlet 32 ​​of the housing 3. A dust filter element (existing technology) is installed at the air outlet of the storage mechanism, and the output side of the dust filter element is open to the atmosphere. The operating parameters of the power unit are also the same as those in Example 1.

[0062] The experimental results showed that when the power unit was started, the suction at the inlet 31 of the casing 3 was insufficient to suck up leaves, resulting in serious leaf spillage, meaning that it could not effectively absorb and clean leaves from the road surface.

[0063] Comparative Example 2

[0064] The leaf-sweeping device in this comparative example is basically the same as that in Example 1, except that the baffle structure is installed inside the housing 3 near the outlet 32. The baffle is connected to the power unit through a transmission component, and the operating parameters of the power unit are also the same as those in Example 1.

[0065] The experimental results showed that when the power unit was started, the suction at the inlet 31 of the casing 3 was insufficient to suck up leaves, resulting in serious leaf spillage, meaning that it could not effectively absorb and clean leaves from the road surface.

Claims

1. A leaf-sweeping device with a paddle wheel, comprising a walking mechanism, characterized in that, Also includes The housing (3) has a cavity structure, with an inlet (31) at the bottom that communicates with the inner cavity and an outlet (32) at the rear that communicates with the inner cavity. The inlet (31) is close to the ground as a suction port when it is in operation. A storage mechanism (4) is connected to the outlet (32), and the storage mechanism (4) has a breathable mesh. The paddle (7) is set in the inner cavity of the housing (3). The paddle (7) is rotatably connected to the housing (3) via a rotating shaft (61). The rotating shaft is connected to the power unit (6) used to drive its rotation. The paddle (7) rotates with the rotating shaft to form a pressure difference between the inner cavity of the housing (3) and the inlet (31), and at the same time forms a centrifugal throwing force that throws the cleaning material sucked in through the inlet (31) toward the outlet (32).

2. The leaf-sweeping device with a paddle plate according to claim 1, characterized in that, The inner cavity of the housing (3) has a circular cross-section to accommodate the rotation trajectory of the dial (7) along the rotating shaft (61), and the outlet (32) is located in the tangential direction of the housing (3).

3. The leaf sweeping device with a paddle plate according to claim 1, characterized in that, There are two housings (3), and the two housings (3) are arranged left and right. The two housings (3) intersect and the cross-section of the inner cavity is "8". The two housings share the same outlet (32) at the intersection and are connected to the guide pipe (33).

4. The leaf-sweeping device with a paddle plate according to any one of claims 1-3, characterized in that, The dial (7) or a portion thereof forms a preset angle with the horizontal plane.

5. The leaf-sweeping device with a paddle plate according to claim 4, characterized in that, The lever (7) is a strip plate structure, with its side edge bent upward to form an inclined surface (71).

6. The leaf sweeping device with a paddle plate according to claim 4, characterized in that, The dial plate (7) has an inclined plate structure.

7. The leaf-sweeping device with a paddle plate according to claim 4, characterized in that, The side edge of the dial (7) is twisted upward at a preset angle.

8. The leaf sweeping device with a paddle plate according to any one of claims 1-3, characterized in that, The housing (3) is connected to the walking mechanism via a lifting mechanism, which is used to adjust the height of the inlet (31) relative to the ground.

9. The leaf-sweeping device with a paddle plate according to any one of claims 1-3, characterized in that, It also includes a disc cleaning brush (8) located on the front side of the housing (3).

10. The leaf sweeping device with a paddle plate according to claim 9, characterized in that, The disc cleaning brush (8) is connected to the housing (3) via a liftable bracket.

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