A suction nozzle assembly for sanitation vehicle

Abstract

The invention discloses a suction nozzle assembly for a sanitation vehicle, which belongs to the technical field of road cleaning, and comprises an upper cover plate, a front baffle plate, a rear baffle plate and a side baffle plate. Two grid plates are arranged on the front baffle plate, and the adjacent ends of the two grid plates are inclined toward the suction nozzle cavity. An introduction groove is arranged between the two grid plates; vibration plates are respectively arranged on the inner side walls of the two grid plates; when the rear wheel of the invention rotates with the rotating rod, the dial wheel presses the side wall of the dial groove, and the sliding rod pulls the vibration plate to move through a pull rope and a connecting plate, and the lower end of the vibration plate rotates toward the inside of the suction nozzle cavity. After the dial wheel rotates out of the dial groove, the first spring presses the vibration plate to reset, and the vibration plate reset generates vibration, so that the guide plate generates vibration, which is beneficial to guiding large-particle garbage; when the lower end of the vibration plate rotates toward the inside of the suction nozzle cavity, the suction nozzle cavity is relatively reduced, and the reset of the vibration plate also causes the space in the suction nozzle cavity to become larger instantly, thereby changing the internal pressure, generating disturbed airflow, and further enhancing the dust collection effect.

Description

Technical Field

[0001] The invention relates to a suction nozzle assembly for a sanitation vehicle, belonging to the technical field of road cleaning. Background Art

[0002] In the prior art, vacuuming equipment, especially vacuuming systems for sanitation vehicles, often face the challenges of difficulty in effectively guiding large particles of garbage and incomplete adsorption of fine dust when dealing with complex and changeable ground environments. Traditional vacuuming systems often rely on a single suction force to collect garbage, but when dealing with large particles of garbage such as gravel and fallen leaves, there is a lack of an effective guiding mechanism, which causes garbage to easily accumulate at the suction nozzle (the front air intake channel is easily blocked by large particles of garbage), affecting the vacuuming efficiency. At the same time, for fine dust and particulate matter that is close to the ground or hidden in gaps, traditional suction often has difficulty penetrating deeply, and the vacuuming effect is limited. Therefore, a suction nozzle assembly for sanitation vehicles is proposed. Summary of the invention

[0003] The object of the present invention is to provide a suction nozzle assembly for a sanitation vehicle to solve the problems raised in the above background technology.

[0004] In order to achieve the above-mentioned purpose, the present invention adopts the following technical scheme: a suction nozzle assembly for a sanitation vehicle, comprising an upper cover plate, a front baffle plate, a rear baffle plate and a side baffle plate, wherein the upper cover plate, the front baffle plate, the rear baffle plate and the side baffle plate together enclose a suction nozzle cavity with an open lower end, an exhaust pipe for sucking the gas inside the suction nozzle cavity is fixed on the upper surface of the upper cover plate, a front air intake channel for sucking air from the front end into the suction nozzle cavity is formed between the front baffle plate and the ground, and the front baffle plate is provided with:

[0005] Two grid plates, the two grid plates are symmetrically arranged on the front baffle plate, and the adjacent ends of the two grid plates are inclined toward the suction nozzle cavity, so as to gather large particles of garbage toward the middle of the front baffle plate;

[0006] An introduction slot, which is arranged between the two grid plates and is used to introduce large particles of garbage into the interior of the suction nozzle cavity;

[0007] Two vibration plates, the two vibration plates are respectively located on the inner side walls of the two grid plates, and a plurality of vibration columns are evenly arranged on the front surface of the vibration plates;

[0008] Wherein, the front surfaces of the two grid plates are both provided with guide plates, and each vibration column passes through the grid holes of the grid plates and contacts with the back side of the guide plates.

[0009] Preferably, the upper end of the vibration plate is hinged on the grid plate, and a first bolt is provided at the lower end of the vibration plate. The threaded end of the first bolt passes through the vibration plate and is meshedly connected to the grid plate. A first spring for pressing the vibration plate toward the grid plate is sleeved on the first bolt.

[0010] Preferably, both sides of the rear wheel of the nozzle assembly are connected to a rotating rod in a coaxial manner, and the side walls of the two rotating rods are provided with a dial wheel;

[0011] A connecting plate is provided on the back of the vibration plate;

[0012] The rear baffle is located on both sides of the rear wheel and is symmetrically slidably connected with a sliding rod, one end of the sliding rod extends into the suction nozzle cavity and is connected to the connecting plate on the same side through a pull rope, and the other end of the sliding rod is provided with a pull groove, and the pull wheel cyclically presses the side wall of the pull groove.

[0013] Preferably, a guide wheel for guiding the pull rope is provided inside the suction nozzle cavity.

[0014] Preferably, the rear surface of the vibration plate is fixedly connected to a fixed frame, the connecting plate is slidably connected to the fixed frame, and the rear surface of the vibration plate, the fixed frame and the connecting plate together form an air cavity;

[0015] The connecting plate is provided with a plurality of second bolts, the threaded ends of the second bolts penetrate the connecting plate and are meshedly connected to the rear surface of the vibration plate, and the second bolts are sleeved with a second spring for pressing the connecting plate toward the fixed frame;

[0016] Each vibrating column has an air passage in communication with the air cavity, and the air passage is in communication with the front air intake passage;

[0017] When the connecting plate slides toward the vibration plate, the gas in the air cavity can be blown out from the air passage toward the front air inlet passage, and the direction of the gas blown out from the air passage is directly toward the ground.

[0018] Preferably, a movable frame is provided on the connecting plate, the inner contour of the movable frame is matched with the outer contour of the fixed frame, and the movable frame is slidably connected to the fixed frame.

[0019] Preferably, one end of the exhaust pipe located in the suction nozzle cavity is fixedly sleeved with a frustum, the large circular end surface of the frustum is fixed on the top wall of the suction nozzle cavity, and the side of the frustum is evenly distributed with guide rods for spirally guiding the gas.

[0020] Preferably, an adjustment plate for adjusting the size of the introduction groove is slidably connected to the introduction groove, and a third bolt for locking the adjustment plate is also provided on the side wall of the introduction groove.

[0021] Compared with existing technologies:

[0022] The first spring presses the vibration plate to reset the vibration plate, and the vibration plate reset generates vibration, causing the guide plate to vibrate, which is beneficial to guiding large particles of garbage; and when the lower end of the vibration plate rotates toward the inside of the suction nozzle cavity, the suction nozzle cavity is relatively reduced. During the resetting process of the vibration plate, the first spring instantly resets the vibration plate. The resetting of the vibration plate also causes the space in the suction nozzle cavity to instantly increase, thereby changing the internal pressure and generating disturbed airflow, which further enhances the dust suction effect. This continuous cyclic impact and airflow disturbance ensure that the suction nozzle assembly always maintains an efficient garbage collection capability during the moving process.

[0023] 2. Under the joint action of the cone and the guide rod of the present invention, the gas and particulate matter are accelerated and spirally rise along the exhaust pipe. At the same time, the guide plate on the front baffle guides large particles of garbage to the inlet groove. When these large particles of garbage reach the vicinity of the cone with the air flow, they will also be affected by the spiral guide, and will be accelerated and more easily sucked into the exhaust pipe. The accelerated and concentrated gas and particulate matter are efficiently transported to the suction assembly of the sanitation vehicle through the exhaust pipe, completing the dust collection process, so that the sanitation vehicle can maintain excellent cleaning performance when dealing with complex ground environments. BRIEF DESCRIPTION OF THE DRAWINGS

[0024] Figure 1 It is a schematic diagram of the structure of the present invention.

[0025] Figure 2 It is an overall bottom view of the present invention.

[0026] Figure 3 For the present invention Figure 2 Enlarged view of point A.

[0027] Figure 4 It is a schematic diagram of the structure of the vibration plate, rotating rod, sliding rod and pull rope of the present invention.

[0028] Figure 5 It is an exploded view of the vibration plate and the connecting plate of the present invention.

[0029] Figure 6 It is a schematic diagram of the overall bottom structure of the present invention.

[0030] Figure 7 It is a cross-sectional view of the vibration plate, fixed frame, connecting plate and movable frame of the present invention.

[0031] Figure 8 It is an exploded view of the front baffle, grid plate and vibration plate of the present invention.

[0032] Fig. 9For the present invention Figure 4 Enlarged view of point B.

[0033] Fig.10 For the present invention Figure 6 Enlarged view of point C.

[0034] In the figure:

[0035] 1. upper cover plate, 2. front baffle plate, 201. grid plate, 202. inlet groove, 3. rear baffle plate, 4. side baffle plate;

[0036] 5. Air extraction pipe;

[0037] 6. vibration plate, 601, vibration column, 602, fixed frame, 603, airway;

[0038] 7. guide plate, 8. first bolt, 9. first spring;

[0039] 10. rear wheel, 11. rotating rod, 12. dial wheel, 13. sliding rod, 1301. dial slot;

[0040] 14. Connecting plate, 1401. Movable frame;

[0041] 15. Pull rope, 16. Guide wheel;

[0042] 17. second bolt, 18. second spring;

[0043] 19. Cone, 20. Guide rod;

[0044] 21. third bolt, 22. adjustment plate;

[0045] 23. Side wheels. DETAILED DESCRIPTION

[0046] The present invention is described below with specific embodiments, but they are not intended to be limiting of the invention.

[0047] Embodiment 1

[0048] like Figure 1-Figure 10 As shown, in this embodiment, a suction nozzle assembly for a sanitation vehicle is provided, including an upper cover plate 1, a front baffle plate 2, a rear baffle plate 3 and a side baffle plate 4, as shown in FIG. Figure 1As shown, a rear wheel 10 is provided on the rear baffle 3, and side wheels 23 are provided on the two side baffles 4. One rear wheel 10 and two side wheels 23 support the suction nozzle assembly. The upper cover plate 1, the front baffle plate 2, the rear baffle plate 3 and the side baffle plates 4 together form a suction nozzle cavity with an open lower end. An exhaust pipe 5 for sucking the gas inside the suction nozzle cavity is fixed to the upper surface of the upper cover plate 1. A rear end air intake channel for sucking air into the suction nozzle cavity from the rear end is formed between the rear baffle plate 3 and the ground, a side air intake channel for sucking air into the suction nozzle cavity from the side is formed between the side baffle plate 4 and the ground, and a front end air intake channel for sucking air into the suction nozzle cavity from the front end is formed between the front baffle plate 2 and the ground. Two grid plates 201 are provided on the front baffle plate 2. The two grid plates 201 are symmetrically arranged on the front baffle plate 2, and the adjacent ends of the two grid plates 201 are inclined toward the suction nozzle cavity, which are used to suck large particles. The large-particle garbage converges toward the middle of the front baffle 2; an introduction groove 202 is arranged between the two grid plates 201 for introducing the large-particle garbage into the interior of the suction nozzle cavity, and one end of the suction pipe 5 inserted into the suction nozzle cavity is located directly behind the introduction groove 202. As the suction nozzle assembly moves forward, the large-particle garbage introduced into the suction nozzle cavity from the introduction groove 202 will be directly below the suction pipe 5, and an adjustment plate 22 for adjusting the size of the introduction groove 202 is slidably connected to the introduction groove 202, and a third bolt 21 for locking the adjustment plate 22 is also arranged on the side wall of the introduction groove 202; vibration plates 6 are respectively arranged on the inner side walls of the two grid plates 201, and a plurality of vibration columns 601 are evenly arranged on the front surface of the vibration plate 6; wherein, guide plates 7 are arranged on the front surfaces of the two grid plates 201, and each vibration column 601 passes through the grid hole of the grid plate 201 and contacts with the back side of the guide plate 7.

[0049] When in use, the suction nozzle assembly is installed on the sanitation vehicle, the upper end of the suction pipe 5 is connected to the suction assembly on the sanitation vehicle, the rear wheel 10 and the two side wheels 23 support the suction nozzle assembly on the ground, and the suction assembly on the sanitation vehicle uses the suction pipe 5 to suck the gas in the suction nozzle cavity to achieve the adsorption of garbage on the ground directly below the suction nozzle cavity.

[0050] As the sanitation vehicle moves forward, the suction nozzle assembly moves forward on the ground, and the large particles of garbage in front of the suction nozzle assembly will abut against the guide plate 7 set on the front baffle 2. After being guided by the guide plate 7, the large particles of garbage are guided to the position of the introduction slot 202, causing the large particles of garbage to enter the suction nozzle cavity from the introduction slot 202. The suction nozzle assembly moves forward, and the large particles of garbage introduced into the suction nozzle cavity from the introduction slot 202 will be directly below the exhaust pipe 5. The suction force at this position is greater than that at other positions of the suction nozzle cavity, which can better suck out large particles of garbage and improve the dust collection efficiency.

[0051] The upper end of the vibration plate 6 is hinged on the grid plate 201, and a through hole is opened at the lower end of the vibration plate 6. A first bolt 8 is arranged in the through hole at the lower end of the vibration plate 6. The aperture of the through hole is larger than the outer diameter of the first bolt 8. When the vibration plate 6 rotates on the grid plate 201 (a small rotation, for example, a rotation angle of 5°), the first bolt 8 will not interfere with its rotation. The threaded end of the first bolt 8 passes through the vibration plate 6 and is meshedly connected to the grid plate 201. A first spring 9 is sleeved on the first bolt 8. One end of the first spring 9 rests on the large head end face of the first bolt 8, and the other end of the first spring 9 rests on the rear surface of the vibration plate 6. The first spring 9 is used to press the vibration plate 6 toward the grid plate 201.

[0052] like Figure 4 , Figure 2 As shown, in order to drive the vibration plate 6 to vibrate on the grid plate 201, a rotating rod 11 is connected to both sides of the rear wheel 10 of the suction nozzle assembly in a coaxial manner, and a dial wheel 12 is provided on the side walls of the two rotating rods 11; a connecting plate 14 is provided on the back of the vibration plate 6; the rear baffle 3 is located on both sides of the rear wheel 10 and is symmetrically slidably connected with a sliding rod 13, one end of the sliding rod 13 extends into the suction nozzle cavity and is connected to the connecting plate 14 on the same side through a pull rope 15, and the other end of the sliding rod 13 is provided with a dial groove 1301.

[0053] As the sanitation vehicle moves forward on the ground with the nozzle assembly, the rear wheel 10 moves along the rotating rod 11. Figure 4 The dial wheel 12 rotates in the direction of the arrow shown. During the rotation, the dial wheel 12 rotates around the rotating rod 11. When the dial wheel 12 rotates into the inside of the dial groove 1301, the dial wheel 12 will press the side wall of the dial groove 1301, causing the slide bar 13 to slide on the rear baffle 3. During the sliding process, the slide bar 13 pulls the vibration plate 6 to move through the pull rope 15 and the connecting plate 14. At this time, the lower end of the vibration plate 6 compresses the first spring 9 and rotates toward the inside of the suction nozzle cavity. As the rotating rod 11 continues to rotate, the dial wheel 12 will rotate out of the dial groove 1301. At this time, the pressing effect of the dial wheel 12 on the side wall of the dial groove 1301 is eliminated, and the first spring 9 will press the vibration plate 6 to reset. During the resetting process of the vibration plate 6, vibration is generated, and the vibration column 601 hits the guide plate 7, causing the guide plate 7 to vibrate, which is then beneficial to the guidance of large particles of garbage.

[0054] As the rear wheel 10 and the rotating rod 11 continue to rotate, the thumbwheel 12 can cyclically rotate into the thumb slot 1301 and cyclically press the side wall of the thumb slot 1301, thereby generating a continuous cyclic impact.

[0055] In addition, when the lower end of the vibration plate 6 rotates toward the inside of the suction nozzle cavity, the suction nozzle cavity is relatively reduced. During the resetting process of the vibration plate 6, the first spring 9 instantly resets the vibration plate 6. The resetting of the vibration plate 6 also causes the space in the suction nozzle cavity to instantly expand, thereby changing the internal pressure and generating disturbed airflow, further enhancing the dust collection effect. This continuous cyclic impact and airflow disturbance ensures that the suction nozzle assembly always maintains efficient garbage collection capabilities during the movement.

[0056] A guide wheel 16 for guiding the pull rope 15 is provided inside the suction nozzle cavity. Figure 2 As shown, there are two guide wheels 16, and the two guide wheels 16 guide the pull rope 15 on the same side respectively. Through the guiding effect of the guide wheels 16, the pulling direction of the pull rope 15 on the connecting plate 14 is perpendicular to the plane of the grid plate 201 on the same side.

[0057] Embodiment 2

[0058] like Figure 5 , Figure 7 As shown, on the basis of embodiment 1, in order to improve the dust collection efficiency of the front-end air intake passage, the rear surface of the vibration plate 6 is fixedly connected to a fixed frame 602, and the connecting plate 14 is slidably connected to the fixed frame 602. The rear surface of the vibration plate 6, the fixed frame 602 and the connecting plate 14 together form an air cavity.

[0059] A plurality of second bolts 17 are provided on the connecting plate 14, and the threaded ends of the second bolts 17 penetrate the connecting plate 14 and mesh with the rear surface of the vibration plate 6. A second spring 18 for pressing the connecting plate 14 toward the fixed frame 602 is sleeved on the second bolt 17. The second bolt 17 not only fixes the connecting plate 14 and the vibration plate 6, but also always presses the connecting plate 14 toward the fixed frame 602 through the elastic force of the second spring 18. The elastic coefficient of the first spring 9 is greater than that of the second spring 18. When the connecting plate 14 is pulled by the pull rope 15, the connecting plate 14 first compresses the second spring 18 and slides a certain distance, and then the connecting plate 14 can pull the vibration plate 6 together, and the vibration plate 6 compresses the first spring 9.

[0060] An air channel 603 communicating with the air cavity is provided inside each vibration column 601 , and the air channel 603 is communicated with the front air inlet channel.

[0061] When the connecting plate 14 slides toward the vibration plate 6 , the gas in the air cavity can be blown out from the air passage 603 toward the front air inlet channel, and the direction of the gas blown out from the air passage 603 is directly facing the ground.

[0062] The connecting plate 14 is provided with a movable frame 1401, the connecting plate 14 and the movable frame 1401 are integrally formed, the inner contour of the movable frame 1401 is adapted to the outer contour of the fixed frame 602, and the movable frame 1401 is slidably connected to the fixed frame 602, as shown in FIG. Figure 7 As shown, after the movable frame 1401 is added, when the connecting plate 14 moves away from the fixed frame 602, the movable frame 1401 moves on the fixed frame 602, thereby increasing the air cavity. At the same time, the fixed frame 602 and the movable frame 1401 are connected in a coordinated manner, so that the air cavity is always in a closed state (except for being connected to the outside through the airway 603).

[0063] When the pull rope 15 pulls the connecting plate 14 to move away from the vibration plate 6, the volume of the air cavity increases;

[0064] When the connecting plate 14 is pressed and slid toward the vibration plate 6 by the second spring 18, the air cavity is compressed, and the gas in the air cavity is squeezed out and ejected along the airway, blowing directly to the ground. This ejected airflow forms a vertical intersection with the airflow in the suction nozzle cavity sucked into the front air inlet channel. When the two airflows converge in the suction nozzle cavity, a downward inclined flow trend will be generated.

[0065] This inclined flow trend greatly enhances the front air intake channel's ability to absorb ground garbage, especially those fine dust and particles that were originally difficult to suck up. They are now more easily driven by this combined force into the suction nozzle cavity and eventually collected by the vacuum cleaner.

[0066] Embodiment 3

[0067] like Figure 2 , Figure 6 As shown, on the basis of the first embodiment, in order to increase the gas flow rate at the connection between the exhaust pipe 5 and the suction nozzle cavity, thereby improving the dust collection efficiency, the exhaust pipe 5 is located in the suction nozzle cavity. One end is fixedly sleeved with a frustum 19, and the large circular end face of the frustum 19 is fixed on the top wall of the suction nozzle cavity, ensuring the sealing and stability of the exhaust pipe 5 connected to the suction nozzle cavity. The side of the frustum 19 is evenly distributed with guide rods 20 for spirally guiding the gas.

[0068] The guide rod 20 can guide the gas entering the range of the cone 19 in a spiral manner. When the gas converges from the various air inlet channels (front end, rear end, and side) of the suction nozzle cavity to the vicinity of the cone 19, the guide rod 20 will guide the gas to rise along the spiral path, forming a rotating upward airflow; this spiral guidance not only increases the path length of the gas during the rising process, so that the gas can be more fully accelerated in a limited space, but also gives the gas a certain centrifugal force through the rotational motion. This centrifugal force helps to gather the fine dust and particulate matter in the suction nozzle cavity to the center, that is, to the entrance direction of the suction pipe 5.

[0069] Working process:

[0070] As the sanitation vehicle drives the nozzle assembly forward, the garbage and dust on the ground are sucked into the nozzle cavity. Under the joint action of the cone 19 and the guide rod 20, these gases and particles are accelerated and spiral upward along the suction pipe. At the same time, the guide plate 7 on the front baffle 2 guides the large particles of garbage to the inlet groove 202. When these large particles of garbage arrive near the cone 19 with the air flow, they will also be affected by the spiral guide, accelerated and more easily sucked into the suction pipe 5.

[0071] Finally, the accelerated and concentrated gas and particulate matter are efficiently transported to the suction assembly of the sanitation vehicle through the exhaust pipe 5, completing the dust collection process; allowing the sanitation vehicle to maintain excellent cleaning performance when dealing with complex ground environments.

[0072] Finally, it should be noted that the above embodiments are only used to illustrate rather than limit the technical solutions of the present invention. Although the present invention has been described in detail with reference to the above embodiments, those skilled in the art should understand that the present invention can still be modified or replaced by equivalents. Any modification or partial replacement that does not depart from the spirit and scope of the present invention should be included in the scope of the claims of the present invention.

Claims

1. A suction nozzle assembly for a sanitation vehicle, comprising an upper cover plate (1), a front baffle plate (2), a rear baffle plate (3) and a side baffle plate (4), wherein the upper cover plate (1), the front baffle plate (2), the rear baffle plate (3) and the side baffle plate (4) together form a suction nozzle cavity with an open lower end, and an exhaust pipe (5) for extracting gas inside the suction nozzle cavity is fixed on the upper surface of the upper cover plate (1), characterized in that: A front air intake passage for intake of air from the front end into the suction nozzle cavity is formed between the front baffle plate (2) and the ground, and the front baffle plate (2) is provided with: Two grid plates (201), the two grid plates (201) being symmetrically arranged on the front baffle plate (2), and the adjacent ends of the two grid plates (201) being inclined toward the suction nozzle cavity, so as to gather large particles of garbage toward the middle of the front baffle plate (2); An introduction groove (202), the introduction groove (202) being arranged between the two grid plates (201) and being used to introduce large particles of garbage into the interior of the suction nozzle cavity; Two vibration plates (6), the two vibration plates (6) being respectively located on the inner side walls of the two grid plates (201), and a plurality of vibration columns (601) being evenly arranged on the front surface of the vibration plates (6); Wherein, the front surfaces of the two grid plates (201) are each provided with a guide plate (7), and each vibration column (601) passes through a grid hole of the grid plate (201) and contacts the back surface of the guide plate (7); The upper end of the vibration plate (6) is hinged on the grid plate (201), and the lower end of the vibration plate (6) is provided with a first bolt (8), the threaded end of the first bolt (8) penetrates the vibration plate (6) and is meshedly connected to the grid plate (201), and the first bolt (8) is sleeved with a first spring (9) for pressing the vibration plate (6) toward the grid plate (201); A rotating rod (11) is coaxially connected to both sides of the rear wheel (10) of the nozzle assembly, and a thumbwheel (12) is disposed on the side walls of the two rotating rods (11); A connecting plate (14) is provided on the back of the vibration plate (6); The rear baffle (3) is symmetrically slidably connected to a slide bar (13) on both sides of the rear wheel (10); one end of the slide bar (13) extends into the suction nozzle cavity and is connected to the connecting plate (14) on the same side via a pull rope (15); the other end of the slide bar (13) is provided with a push groove (1301); the push wheel (12) cyclically presses the side wall of the push groove (1301).

2. The suction nozzle assembly for a sanitation vehicle according to claim 1, characterized in that: A guide wheel (16) for guiding the pull rope (15) is arranged inside the suction nozzle cavity.

3. The suction nozzle assembly for a sanitation vehicle according to claim 1, characterized in that: The rear surface of the vibration plate (6) is fixedly connected to a fixed frame (602), the connecting plate (14) is slidably connected to the fixed frame (602), and the rear surface of the vibration plate (6), the fixed frame (602) and the connecting plate (14) together form an air cavity; A plurality of second bolts (17) are provided on the connecting plate (14), the threaded ends of the second bolts (17) penetrate the connecting plate (14) and are meshedly connected to the rear surface of the vibration plate (6), and a second spring (18) for pressing the connecting plate (14) toward the fixed frame (602) is sleeved on the second bolts (17); Each vibration column (601) is provided with an air channel (603) in communication with the air cavity, and the air channel (603) is in communication with the front air intake channel; When the connecting plate (14) slides towards the vibration plate (6), the gas in the air cavity can be blown out from the air passage (603) towards the front air inlet channel, and the direction of the gas blown out from the air passage (603) is directly facing the ground.

4. The suction nozzle assembly for a sanitation vehicle according to claim 3, characterized in that: A movable frame (1401) is provided on the connecting plate (14); the inner contour of the movable frame (1401) is adapted to the outer contour of the fixed frame (602), and the movable frame (1401) is slidably connected to the fixed frame (602).

5. The suction nozzle assembly for a sanitation vehicle according to claim 1, characterized in that: One end of the air extraction pipe (5) located in the suction nozzle cavity is fixedly sleeved with a frustum (19), the large circular end surface of the frustum (19) is fixed on the top wall of the suction nozzle cavity, and the side surface of the frustum (19) is evenly distributed with guide rods (20) for spirally guiding gas.

6. The suction nozzle assembly for a sanitation vehicle according to claim 5, characterized in that: An adjustment plate (22) for adjusting the size of the introduction groove (202) is slidably connected to the introduction groove (202), and a third bolt (21) for locking the adjustment plate (22) is also provided on the side wall of the introduction groove (202).

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