Combined type road sweeper

Abstract

The combined road sweeper comprises a vehicle body, the vehicle body comprises a compartment, a storage box is arranged at the bottom of the compartment, a top falling opening communicated with the storage box is formed in the inner bottom face of the compartment, and top rails are arranged on the portions, located on the two sides of the top falling opening, of the inner bottom face of the compartment; the cleaning trolley moves on the top rail; the device further comprises two connecting inclined rails. The sweeping trolley comprises a sweeping chassis, a bottom cavity, a top cavity, a fan and a fan motor; the sweeping trolley can be used for sweeping independently of the trolley body, garbage temporarily stored in the bottom cavity is automatically thrown into the storage box on the trolley body after entering the trolley body, the automation intensity is high, the sweeping efficiency is greatly improved, the sweeping trolley is small in size and high in flexibility, work in the narrow and complex environment is successfully achieved, and meanwhile the sweeping trolley is convenient to use. As the vehicle body does not need to move frequently, the energy consumption and the operation time are reduced, and the cleaning efficiency is further improved.

Description

Technical Field

[0001] The present invention relates to the technical field of environmental sanitation equipment, and specifically relates to a combined road sweeper. Background Art

[0002] At present, most of the common garbage sweepers on the market adopt fixed cleaning devices. Generally, the hoses and brush heads of these devices are directly installed on the vehicle, and the road is cleaned while the vehicle is moving.

[0003] However, although the above common garbage sweepers are more suitable for cleaning wide roads, in narrow and complex environments such as narrow alleys and crowded blocks, due to the large size of the vehicle, the flexibility is limited, so it is difficult to operate efficiently. In addition, the sweeper must move frequently to cover the entire operation area, increasing energy consumption and operation time, which is not conducive to energy conservation and environmental protection and the cleaning efficiency is low.

[0004] Therefore, a combined road sweeper is proposed, which can not only work in narrow and complex areas, but also reduce energy consumption while improving the cleaning efficiency. Summary of the Invention

[0005] The purpose of the present invention is to provide a combined road sweeper to solve the problems raised in the above background art.

[0006] To achieve the above purpose, the present invention provides the following technical solution: A combined road sweeper includes a vehicle body, the vehicle body includes a carriage, a storage tank is arranged at the bottom of the carriage, a top drop port communicating with the storage tank is opened on the inner bottom surface of the carriage, and top rails are arranged on both sides of the inner bottom surface of the carriage at the top drop port.

[0007] It also includes a cleaning trolley that moves on the top rails.

[0008] It also includes two connecting inclined rails for docking the two top rails to allow the cleaning trolley to move out of the carriage along the top rails and the connecting inclined rails.

[0009] The cleaning trolley includes a cleaning chassis, a bottom cavity, a top cavity, a blower and a blower motor.

[0010] The inside of the bottom cavity is used for temporarily storing garbage, the top cavity is used to prevent blockage, the blower is used to provide suction, and the blower motor provides the power required by the blower.

[0011] Preferably, a through hole is formed at the center of the bottom surface of the cleaning chassis. A supporting ring is arranged at the edge of the through hole on the bottom surface of the cleaning chassis. A bottom gear is rotatably connected to the supporting ring. A lower through hole is formed in the bottom gear. An inner sleeve ring is arranged at the edge of the through hole on the top surface of the cleaning chassis. An upper through hole is formed in the top surface of the cleaning chassis. One of the two top rails is fixedly connected with a strip-shaped tooth through a connecting block on the side close to the top dropping port. When the cleaning trolley moves on the top rail, the strip-shaped tooth meshes with the bottom gear, causing the bottom gear to rotate, so that the lower through hole and the upper through hole gradually coincide, and the upper through hole is opened.

[0012] Preferably, a top filter screen is arranged at the top of the inner side wall of the bottom cavity. A hollow frustum is fixedly connected to the bottom of the inner side wall of the bottom cavity through a plurality of connecting rods. An automatic locking mechanism is arranged at the top of the hollow frustum.

[0013] Preferably, the automatic locking mechanism includes a top cone, a middle through pipe, and a bottom elastic sheet. The top cone is arranged at the top of the middle through pipe. A plurality of dust inlet holes are formed in the side wall of the bottom elastic sheet. The bottom elastic sheet is arranged at the bottom of the middle through pipe.

[0014] Preferably, the top cavity is arranged at the top of the bottom cavity. The air inlet of the blower faces downward and is located at the top of the top cavity. A bottom filter screen is arranged on the inner side wall of the air inlet of the blower. The bottom surface of the bottom filter screen is rotatably connected with a central rotating shaft and a connecting shaft. A blocking disc is fixedly connected to the bottom end of the central rotating shaft. A central gear is sleeved on the central rotating shaft. A wind blade and a side gear are arranged on the connecting shaft. A top through hole is formed in the blocking disc.

[0015] Preferably, the central rotating shaft is arranged at the center of the bottom filter screen. There are two connecting shafts. The side gear meshes with the central gear. The top through hole is located in the area projected onto the blocking disc during one rotation of the wind blade around the central rotating shaft.

[0016] Preferably, a driving assembly is arranged at the top edge of the cleaning chassis, which is used to drive the cleaning trolley to move and supply electric energy to the blower motor to start the blower. The air outlet of the blower is located on its outer side wall.

[0017] Preferably, bottom wheels are arranged at the bottom of the cleaning chassis for the movement of the cleaning trolley. The carriage further includes a rear baffle for closing the carriage.

[0018] Preferably, the bottom of the hollow frustum is sleeved on the inner sleeve ring. The bottom cavity is located on the top surface of the cleaning chassis and inside the driving assembly.

[0019] Preferably, bottom brush hairs are arranged on the bottom surface of the supporting ring. Anti-blocking brush hairs are arranged on the bottom surface of the blocking disc. The anti-blocking brush hairs rotate in contact with the top filter screen.

[0020] Compared with the prior art, the beneficial effects of the present invention are as follows:

[0021] 1. This combined road sweeper utilizes the fact that the cleaning trolley can clean independently of the vehicle body, and when it enters the vehicle body, it automatically throws the garbage temporarily stored in the bottom cavity into the storage box on the vehicle body. It has a high degree of automation, greatly improves the cleaning efficiency. Also, because the cleaning trolley is small in size and highly flexible, it can successfully operate in narrow and complex environments. At the same time, since the vehicle body does not need to move frequently, energy consumption and operation time are reduced, thereby further improving the cleaning efficiency.

[0022] 2. This combined road sweeper utilizes the setting of the automatic locking mechanism on the cleaning trolley, successfully achieving the automatic closing of the hollow frustum, avoiding the leakage of garbage in the bottom cavity from the hollow frustum, and greatly improving the cleaning efficiency of the cleaning trolley. At the same time, by using the rotation of the baffle plate, a certain area on the top filter screen is intermittently used, effectively avoiding blockage at the top filter screen, greatly improving the use stability of the cleaning trolley, and ultimately improving the cleaning efficiency of the cleaning trolley. The structure is simple but ingenious, with an obvious anti-blocking effect, and uses gas flow as the power source, which is more energy-saving. BRIEF DESCRIPTION OF THE DRAWINGS

[0023] The above and / or additional aspects and advantages of the present invention will become apparent and be readily understood from the following description of the embodiments in conjunction with the accompanying drawings. Obviously, the drawings in the following description are only some embodiments of the present invention, and those of ordinary skill in the art can also obtain other drawings based on these drawings without creative efforts. Among them:

[0024] Figure 1 It is a cross-sectional view of the cleaning trolley in a combined road sweeper;

[0025] Figure 2 It is a schematic diagram of the internal structure of the cleaning trolley in a combined road sweeper;

[0026] Figure 3 It is a connection diagram of the strip teeth and the bottom gear in a combined road sweeper;

[0027] Figure 4 It is a connection diagram of the supporting ring and the bottom brush bristles in a combined road sweeper;

[0028] Figure 5 It is a schematic diagram of the structure of the inner sleeve ring in a combined road sweeper;

[0029] Figure 6 It is an assembly diagram of the vehicle body and the cleaning trolley in a combined road sweeper;

[0030] Figure 7 It is a schematic diagram of the structure of the storage box in a combined road sweeper;

[0031] Figure 8 It is a schematic assembly view of the vehicle body and the cleaning trolley in a combined road sweeper from another perspective;

[0032] Figure 9 is Figure 8 an enlarged schematic view of part A in

[0033] In the figure: 1. Vehicle body; 101. Storage box; 102. Compartment; 103. Rear baffle; 104. Connecting inclined rail; 105. Top drop port; 106. Top rail; 107. Strip teeth; 108. Connecting block; 2. Cleaning chassis; 201. Driving assembly; 202. Bottom gear; 203. Lower through port; 204. Supporting ring; 205. Bottom brush; 206. Inner sleeve ring; 207. Upper through port; 3. Bottom cavity; 301. Top filter screen; 302. Hollow frustum; 303. Automatic locking mechanism; 304. Connecting rod; 4. Fan; 401. Bottom filter screen; 5. Fan motor; 6. Top cavity; 601. Central rotating shaft; 602. Central gear; 603. Baffle plate; 604. Top through port; 7. Wind blade; 701. Side gear; 702. Connecting shaft; 8. Top cone; 801. Middle through pipe; 802. Bottom elastic sheet; 803. Dust inlet. Detailed implementation manners

[0034] Next, the technical solutions in the embodiments of the present invention will be clearly and completely described in conjunction with the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only a part of the embodiments of the present invention, rather than all the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those of ordinary skill in the art without creative efforts shall fall within the protection scope of the present invention.

[0035] In the description of the present invention, it should be understood that the orientation or positional relationship indicated by terms such as up, down, front, back, left, right, etc. is the orientation or positional relationship based on the orientation or positional relationship shown in the drawings, and is only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and thus should not be construed as a limitation to the present invention.

[0036] In the description of the present invention, the meaning of several is one or more, the meaning of multiple is more than two, greater than, less than, exceeding, etc. are understood as not including the present number, and above, below, within, etc. are understood as including the present number. If there is a description of first and second, it is only for the purpose of distinguishing technical features and cannot be understood as indicating or implying relative importance or implicitly indicating the quantity of the indicated technical features or implicitly indicating the sequence relationship of the indicated technical features.

[0037] Refer to Figures 1-9As shown in the figure, the present invention provides a technical solution for a combined road sweeper:

[0038] A combined road sweeper includes a vehicle body 1, the vehicle body 1 includes a carriage 102, a storage box 101 is arranged at the bottom of the carriage 102, a top drop opening 105 communicating with the storage box 101 is opened on the inner bottom surface of the carriage 102, and top rails 106 are arranged on both sides of the inner bottom surface of the carriage 102 at the top drop opening 105.

[0039] This combined road sweeper further includes a cleaning trolley that moves on the top rails 106.

[0040] This combined road sweeper further includes two connecting inclined rails 104 for docking the two top rails 106, so that the cleaning trolley can move out of the carriage 102 along the top rails 106 and the connecting inclined rails 104.

[0041] Refer to Figure 6 As shown in the figure, multiple cleaning trolleys can be provided. For the sake of clear display in the figure, only one cleaning trolley is shown on the vehicle body 1. When multiple cleaning trolleys are provided, they are smaller in volume, and the top rails 106, connecting inclined rails 104, top drop openings 105, etc. adapted to them are all arranged accordingly.

[0042] The cleaning trolley includes a cleaning chassis 2, a bottom cavity 3, a top cavity 6, a blower 4 and a blower motor 5. Among them, the blower 4 and the blower motor 5 are both prior arts and will not be elaborated here.

[0043] Among them, the inside of the bottom cavity 3 is used for temporarily storing garbage, the top cavity 6 is used to prevent blockage, the blower 4 is used to provide suction, and the blower motor 5 provides the power required by the blower 4.

[0044] Refer to Figures 1-9 As shown in the figure, in an optional embodiment: a through hole is opened at the center of the bottom surface of the cleaning chassis 2, a supporting ring 204 is arranged at the edge of the through hole on the bottom surface of the cleaning chassis 2, a bottom gear 202 is rotatably connected to the supporting ring 204, a lower through hole 203 is opened on the bottom gear 202, an inner sleeve ring 206 is arranged at the edge of the through hole on the top surface of the cleaning chassis 2, an upper through hole 207 is opened on the top surface of the cleaning chassis 2, a bar-shaped tooth 107 is fixedly connected to one side of one of the two top rails 106 close to the top drop opening 105 through a connecting block 108. When the cleaning trolley moves on the top rail 106, the bar-shaped tooth 107 meshes with the bottom gear 202, causing the bottom gear 202 to rotate, so that the lower through hole 203 and the upper through hole 207 gradually coincide, opening the upper through hole 207.

[0045] Refer to Figure 1 and Figure 2As shown, in an alternative embodiment: a top filter screen 301 is provided at the top of the inner sidewall of the bottom cavity 3, and a hollow frustum 302 is fixedly connected to the bottom of the inner sidewall of the bottom cavity 3 by a plurality of connecting rods 304. An automatic locking mechanism 303 is provided at the top of the hollow frustum 302.

[0046] Referring to Figure 2 As shown, in an alternative embodiment: the automatic locking mechanism 303 includes a top cone 8, a through tube 801, and a bottom elastic sheet 802. The top cone 8 is provided at the top of the through tube 801. A plurality of dust inlet openings 803 are formed in the sidewall of the bottom elastic sheet 802. The bottom elastic sheet 802 is provided at the bottom of the through tube 801.

[0047] Referring to Figure 1 As shown, in an alternative embodiment: the top cavity 6 is provided at the top of the bottom cavity 3. The air inlet of the blower 4 is arranged downward and is located at the top of the top cavity 6. A bottom filter screen 401 is provided on the inner sidewall of the air inlet of the blower 4. A central rotating shaft 601 and a connecting shaft 702 are rotatably connected to the bottom surface of the bottom filter screen 401. A blocking disk 603 is fixedly connected to the bottom end of the central rotating shaft 601. A central gear 602 is sleeved on the central rotating shaft 601. Wind blades 7 and side gears 701 are provided on the connecting shaft 702. A top through opening 604 is formed in the blocking disk 603.

[0048] Among them, it should be added that the central rotating shaft 601 is provided at the center of the bottom filter screen 401. There are two connecting shafts 702. The side gear 701 meshes with the central gear 602. The top through opening 604 is located within the area projected onto the blocking disk 603 during the rotation of the wind blades 7 around the central rotating shaft 601 for one week.

[0049] Referring to Figure 1 As described, a driving assembly 201 is provided at the top edge of the cleaning chassis 2, which is used to drive the cleaning trolley to move and supply electric energy to the blower motor 5 to start the blower 4. The air outlet of the blower 4 is located on its outer sidewall.

[0050] Referring to Figures 4-7 As shown, in an alternative embodiment: bottom wheels are provided at the bottom of the cleaning chassis 2 for the movement of the cleaning trolley. The carriage 102 further includes a rear baffle 103 for closing the carriage 102.

[0051] Among them, it should be added that the bottom of the hollow frustum 302 is sleeved on the inner sleeve ring 206, and the bottom cavity 3 is located on the top surface of the cleaning chassis 2 and within the driving assembly 201.

[0052] Referring to Figure 1 As shown, in an alternative embodiment: bottom bristles 205 are provided on the bottom surface of the supporting ring 204, and anti-clogging bristles are provided on the bottom surface of the blocking disk 603. The anti-clogging bristles are in contact with the top filter screen 301 and rotate.

[0053] This combined road sweeper utilizes the fact that the cleaning trolley can clean independently of the vehicle body 1, and when it enters the vehicle body 1, it automatically throws the garbage temporarily stored in the bottom cavity 3 into the storage box 101 on the vehicle body 1. It has a high degree of automation, greatly improving the cleaning efficiency. Also, because the cleaning trolley is small in size and highly flexible, it has successfully achieved operation in narrow and complex environments. At the same time, since the vehicle body 1 does not need to move frequently, energy consumption and operation time are reduced, thus further improving the cleaning efficiency.

[0054] This combined road sweeper utilizes the setting of the automatic locking mechanism 303 on the cleaning trolley, successfully achieving the automatic closing of the hollow frustum 302, avoiding the leakage of garbage in the bottom cavity 3 from the hollow frustum 302, greatly improving the cleaning efficiency of the cleaning trolley. At the same time, by using the rotation of the baffle 603, a certain area on the top filter screen 301 is intermittently used, effectively avoiding blockage at the top filter screen 301, greatly improving the use stability of the cleaning trolley, and ultimately improving the cleaning efficiency of the cleaning trolley. The structural setting is simple but delicate, with an obvious anti-blocking effect, and using gas flow as the power source is more energy-efficient.

[0055] Now, the working principle of this combined road sweeper is described through its working process: When using this combined road sweeper, drive the vehicle body 1 to a suitable area to be cleaned and then stop. Pull out the rear baffle 103 from the tail of the carriage 102, and dock the two connecting inclined rails 104 with the two top rails 106. Start the cleaning trolley through the drive assembly 201. The cleaning trolley will disengage from the carriage 102 on the top rail 106 and the connecting inclined rail 104. At this time, the lower through-hole 203 and the upper through-hole 207 do not coincide, so that the bottom of the bottom cavity 3 is closed and can be used to temporarily store garbage. It should be noted that the garbage includes small particle debris, etc. After the cleaning trolley moves to the area to be cleaned through the drive assembly 201, start the fan motor 5, so that the fan 4 starts to work. The fan 4 sucks air from its air inlet, and the garbage below the hollow frustum 302 will be sucked into the bottom cavity 3 through the automatic locking mechanism 303. Now, the suction process is described in detail:

[0056] Due to the air extraction of the fan 4, the garbage is sucked from the hollow frustum 302 into the middle through pipe 801, and enters the bottom cavity 3 from the dust inlet 803. After being filtered and blocked by the top filter screen 301, it is stored in the bottom cavity 3. During this process, since the bottom elastic piece 802 is elastic, when the fan 4 starts to extract air, the automatic locking mechanism 303 moves upward, so that the dust inlet 803 extends into the bottom cavity 3, and the garbage will enter the bottom cavity 3 through the dust inlet 803. At this time, since the bottom elastic piece 802 moves upward following the automatic locking mechanism 303, it contacts and bends with the inner wall of the hollow frustum 302, accumulating elastic potential energy. When the fan 4 stops extracting air, under the dual action of the self-gravity of the automatic locking mechanism 303 and the elastic potential energy of the bottom elastic piece 802, the automatic locking mechanism 303 will quickly return to the initial position, that is, the top cone 8 fits on the top of the hollow frustum 302 located in the bottom cavity 3, thus avoiding the leakage of the garbage in the bottom cavity 3 and further reducing the cleaning effect. It should be noted that the conical surface design of the hollow frustum 302 and the top cone 8 is to facilitate the garbage to fall from it, which is beneficial to the transfer of the garbage from the bottom cavity 3 to the outside.

[0057] Furthermore, after the garbage sucked into the bottom cavity 3 is filtered and blocked by the top filter screen 301, it is easy to form a blockage on the top filter screen 301, thus affecting the normal operation of the road sweeper. For this reason, this road sweeper, through the settings of the top cavity 6, the central rotating shaft 601, the fan blades 7, etc., not only prevents the blockage of the top filter screen 301, but also is beneficial to the collection of the garbage, and has a high degree of automation. Now, this process will be elaborated in detail:

[0058] Due to the blockage of the baffle plate 603, the gas extracted from the bottom cavity 3 can only enter the top cavity 6 through the top through port 604, then enter the fan 4 through the bottom filter screen 401 and be discharged from the air outlet of the fan 4. During this process, since the gas jets out from the top through port 604, and the fan blades 7 are close to the top through port 604, the connecting shaft 702 starts to rotate. Since the central gear 602 and the side gear 701 are meshed, the central gear 602 starts to rotate. Driven by the central rotating shaft 601, the baffle plate 603 starts to rotate. The rotation of the baffle plate 603 makes different areas of the top filter screen 301 intermittently bear the role of filtering and blocking. Without the upward driving of the gas, the garbage not directly below the top through port 604 will fall under its own gravity and will not accumulate on the top filter screen 301, thus avoiding the blockage of the top filter screen 301. The anti-blocking brush hairs arranged on the bottom surface of the baffle plate 603 will further clean the top filter screen 301 to assist the garbage to fall, thus further avoiding the blockage of the top filter screen 301.

[0059] After the cleaning cart finishes cleaning, it will return and enter the carriage 102 through the connecting inclined rail 104 and the top rail 106. During this process, the strip teeth 107 will mesh with the bottom gear 202. Thus, during the movement of the cleaning cart into the carriage 102, the bottom gear 202 starts to rotate, so that the lower through port 203 gradually coincides with the upper through port 207. Furthermore, the garbage temporarily stored in the bottom cavity 3 will fall into the storage box 101 through the upper through port 207, the lower through port 203 and the top dropping port 105 under the action of gravity, completing the transfer of the garbage. At this time, the cleaning cart can repeat the above operations. After cleaning the area to be cleaned, the garbage is uniformly stored in the storage box 101.

[0060] Although the embodiments of the present invention have been shown and described, it will be understood by those of ordinary skill in the art that various changes, modifications, substitutions and variations can be made to these embodiments without departing from the principles and spirit of the present invention. The scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. A combined road sweeper, comprising a vehicle body (1), wherein the vehicle body (1) comprises a vehicle compartment (102), characterized in that: A storage box (101) is arranged at the bottom of the carriage (102), a top opening (105) connected to the storage box (101) is opened on the inner bottom surface of the carriage (102), and top rails (106) are arranged on both sides of the top opening (105) on the inner bottom surface of the carriage (102); Also included is a cleaning trolley, which moves on the top rail (106); It also includes two connecting inclined rails (104) for connecting the two top rails (106) so that the cleaning vehicle can be moved out of the carriage (102) along the top rails (106) and the connecting inclined rails (104); The cleaning vehicle comprises a cleaning chassis (2), a bottom cavity (3), a top cavity (6), a fan (4) and a fan motor (5); The interior of the bottom cavity (3) is used for temporarily storing garbage, the top cavity (6) is used to prevent clogging, the fan (4) is used to provide suction, and the fan motor (5) provides the power required by the fan (4).

2. A combined road sweeper according to claim 1, characterized in that: A through hole is provided at the center of the bottom surface of the cleaning chassis (2); a supporting ring (204) is provided on the bottom surface of the cleaning chassis (2) at the edge of the through hole; the supporting ring (204) is rotatably connected to a bottom gear (202); a lower through hole (203) is provided on the bottom gear (202); an inner sleeve ring (206) is provided on the top surface of the cleaning chassis (2) at the edge of the through hole; an upper A through opening (207), one of the two top rails (106) is fixedly connected with a bar-shaped tooth (107) on one side close to the top drop opening (105) through a connecting block (108), and when the cleaning trolley moves on the top rail (106), the bar-shaped tooth (107) meshes with the bottom gear (202), causing the bottom gear (202) to rotate, thereby causing the lower through opening (203) and the upper through opening (207) to gradually overlap, thereby opening the upper through opening (207).

3. A combined road sweeper according to claim 2, characterized in that: A top filter (301) is provided at the top of the inner wall of the bottom cavity (3), a hollow frustum (302) is fixedly connected to the bottom of the inner wall of the bottom cavity (3) via a plurality of connecting rods (304), and an automatic locking mechanism (303) is provided at the top of the hollow frustum (302).

4. A combined road sweeper according to claim 3, characterized in that: The automatic locking mechanism (303) comprises a top cone (8), a middle through tube (801), and a bottom spring sheet (802); the top cone (8) is arranged at the top of the middle through tube (801); a plurality of dust inlets (803) are provided on the side wall of the bottom spring sheet (802); and the bottom spring sheet (802) is arranged at the bottom of the middle through tube (801).

5. A combined road sweeper according to claim 4, characterized in that: The top cavity (6) is arranged at the top of the bottom cavity (3); the air inlet of the fan (4) is arranged downward and is located at the top of the top cavity (6); the inner wall of the air inlet of the fan (4) is provided with a bottom filter (401); the bottom surface of the bottom filter (401) is rotatably connected to a central rotating shaft (601) and a connecting shaft (702); the bottom end of the central rotating shaft (601) is fixedly connected to a baffle (603); a central gear (602) is sleeved on the central rotating shaft (601); a fan blade (7) and a side gear (701) are provided on the connecting shaft (702); and a top through hole (604) is opened on the baffle (603).

6. A combined road sweeper according to claim 5, characterized in that: The central rotating shaft (601) is arranged at the center of the bottom filter (401), two connecting shafts (702) are arranged, the side gears (701) are meshed with the central gear (602), and the top opening (604) is located in the area projected onto the baffle (603) during the fan blade (7) rotates around the central rotating shaft (601) for one circle.

7. A combined road sweeper according to claim 6, characterized in that: A driving assembly (201) is provided at the top edge of the cleaning chassis (2) for driving the cleaning trolley to move and providing electric energy to the fan motor (5) to start the fan (4); the air outlet of the fan (4) is located at the outer side wall thereof.

8. A combined road sweeper according to claim 7, characterized in that: The bottom of the cleaning chassis (2) is provided with bottom wheels for moving the cleaning trolley, and the carriage (102) also includes a rear baffle (103) for closing the carriage (102).

9. A combined road sweeper according to claim 8, characterized in that: The bottom of the hollow cone (302) is sleeved on the inner ring (206), and the bottom cavity (3) is located on the top surface of the cleaning chassis (2) and inside the driving assembly (201).

10. A combined road sweeper according to claim 9, characterized in that: The bottom surface of the support ring (204) is provided with bottom brush bristles (205), and the bottom surface of the baffle plate (603) is provided with anti-clogging bristles, and the anti-clogging bristles rotate in contact with the top filter screen (301).

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