Suction nozzle assembly and sweeper truck

Abstract

The invention relates to a suction nozzle assembly and a sweeping machine. The suction nozzle assembly and the sweeping machine are used for solving the technical problem that waste is prone to being wound into a smashing mechanism. The suction nozzle assembly comprises a suction nozzle body and a crushing mechanism, the suction nozzle body comprises a negative pressure cavity with the bottom attached to the ground and an adsorption pipeline communicated with the negative pressure cavity, an opening allowing waste to enter is formed in the front side of the negative pressure cavity, the adsorption pipeline can provide negative pressure for the negative pressure cavity, and the crushing mechanism comprises a crushing cutter assembly capable of rotating relative to the suction nozzle body. The rotating shaft is arranged on the front side of the adsorption pipeline and above the negative pressure cavity, the lower end of the rotating shaft can enter the negative pressure cavity through a first avoiding opening in the top wall of the negative pressure cavity, and the rear end of the rotating shaft can enter the adsorption pipeline through a second avoiding opening in the side wall of the adsorption pipeline; the smashing mechanism further comprises a first partition plate and a second partition plate which cover the first receding opening and the second receding opening respectively, the first partition plate and the second partition plate are provided with slits for the ends of the smashing cutter assembly to pass through respectively, and the slits in the two partition plates are connected.

Description

Technical Field

[0001] The present disclosure relates to the technical field of road sweepers, and in particular to a suction nozzle assembly and a road sweeper. Background Art

[0002] At present, the wastes that need to be cleaned on the road include small-sized pieces of paper, sand, cigarette butts, etc., as well as large-sized branches, leaves, ropes, cloth strips, plastic bags, etc., which need to be crushed. Therefore, in the related art, a crushing mechanism is usually provided on the suction nozzle of the road sweeper to crush the large-sized branches, leaves, etc. before the wastes enter the adsorption pipe, so as to avoid the wastes from clogging the adsorption pipe.

[0003] However, when the pulverizing mechanism pulverizes waste with a certain degree of flexibility, such as ropes, cloth strips, and plastic bags, this type of waste is easily entangled in the tool blades and rotating shaft of the pulverizing mechanism, which not only affects the pulverization of this type of waste by the pulverizing mechanism, but also causes deformation of the tool blades and even causes the tool rotating shaft to get stuck. Summary of the invention

[0004] The purpose of the present disclosure is to provide a suction nozzle assembly and a road sweeper to solve the technical problem that waste is easily entangled in a pulverizing mechanism.

[0005] In order to achieve the above-mentioned purpose, the present disclosure provides a suction nozzle assembly, including: a suction nozzle body, including a negative pressure chamber with a bottom attached to the ground and an adsorption pipe connected to the negative pressure chamber, the front side of the negative pressure chamber is provided with an opening for waste to enter, the adsorption pipe can provide negative pressure for the negative pressure chamber, and a crushing mechanism, including a crushing tool assembly rotatable relative to the suction nozzle body, the rotating shaft of the crushing tool assembly is arranged on the front side of the adsorption pipe and is arranged above the negative pressure chamber, the lower end of the crushing tool assembly can enter the negative pressure chamber through a first avoidance opening on the top wall of the negative pressure chamber, and the rear end of the crushing tool assembly can enter the adsorption pipe through a second avoidance opening on the side wall of the adsorption pipe, the crushing mechanism also includes a first partition covering the first avoidance opening and a second partition covering the second avoidance opening, the first partition and the second partition are respectively provided with slits for the end of the crushing tool assembly to pass through, and the rear end of the slit of the first partition is connected to the lower end of the slit of the second partition.

[0006] Optionally, the crushing mechanism also includes a cover shell, which is fixedly connected to the top of the suction nozzle body to form a space for accommodating the crushing tool assembly around the outer surface of the suction nozzle body, the rotating shaft is rotatably connected to the cover shell, the first partition plate is arranged in the lower end opening of the cover shell, and the second partition plate is arranged in the rear side opening of the cover shell.

[0007] Optionally, the crushing tool assembly also includes a blade fixedly connected to the rotating shaft, the blade extends radially along the rotating shaft, and the blade can pass through the slit during the rotation of the rotating shaft. The crushing tool assembly includes multiple groups of blades, each group of blades includes multiple blades, and the multiple groups of blades are evenly spaced along the central axis of the rotating shaft. Multiple blades in the same group of blades are arranged in an array around the central axis of the rotating shaft.

[0008] Optionally, the first partition is provided with a plurality of slits extending in parallel, and the plurality of slits on the first partition are evenly spaced and arranged along the central axis direction of the rotating shaft to correspond one-to-one to the positions of the plurality of groups of blades, and the second partition is provided with a plurality of slits extending in parallel, and the plurality of slits on the second partition are evenly spaced and arranged along the central axis direction of the rotating shaft to correspond one-to-one to the positions of the plurality of groups of blades.

[0009] Optionally, the distance between the outer surface of the blade and the inner wall of the slit is 1 mm to 3 mm.

[0010] Optionally, the first partition is constructed as a flat plate structure to form a portion of the top wall of the negative pressure chamber, and the second partition is constructed as an arc-shaped plate structure protruding toward the outside of the adsorption pipe to form a portion of the side wall of the adsorption pipe.

[0011] Optionally, the nozzle body further comprises a front baffle which is flippably connected to the upper edge of the opening, and the front baffle can adjust the size of the opening.

[0012] Optionally, the nozzle body includes a top plate, a first driving member is connected to the top plate, and an output end of the first driving member is rotatably connected to the front baffle to drive the front baffle to flip upward or downward.

[0013] Optionally, a guide structure is provided in the negative pressure chamber, and the guide structure can guide the waste in the negative pressure chamber to the bottom of the adsorption pipe. The guide structure includes a V-shaped guide plate, the upper end of the V-shaped guide plate is connected to the top wall of the negative pressure chamber, and the lower end of the V-shaped guide plate is attached to the ground. The V-shaped guide plate extends from the rear side of the adsorption pipe to the opening, the tip of the V-shaped guide plate is arranged on the rear side of the adsorption pipe, and the opening end of the V-shaped guide plate faces the opening.

[0014] On the basis of the above technical solution, the present disclosure also provides a road sweeper, including the suction nozzle assembly in the above technical solution.

[0015] Through the above technical solution, the suction nozzle assembly provided by the present disclosure includes a suction nozzle body and a crushing mechanism, the rotating shaft of the crushing tool assembly is arranged on the front side of the adsorption pipe and arranged above the negative pressure chamber, the lower end of the crushing tool assembly can enter the negative pressure chamber through the first avoidance port to crush the waste entering the negative pressure chamber through the opening, and the rear end of the crushing tool assembly can enter the adsorption pipe through the second avoidance port to winch the crushed waste into the adsorption pipe, thereby accelerating the discharge of the waste. The first partition at the first avoidance port and the second partition at the second avoidance port can not only make the crushing tool assembly contact with the waste through the slit thereon to crush the waste, but also prevent the waste from being entangled with the crushing tool assembly, and the slit can also cooperate with the crushing tool assembly to cut the long strips of flexible waste, thereby improving the crushing efficiency of the waste. In addition, the first partition and the second partition can also guide the airflow in the negative pressure chamber and the adsorption pipe to improve the airflow transportation efficiency of the waste. The road sweeper provided by the present disclosure has the same technical effect as the suction nozzle assembly in the above technical solution, and in order to avoid unnecessary repetition, it will not be described here.

[0016] Other features and advantages of the present disclosure will be described in detail in the following detailed description. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] The accompanying drawings are used to provide a further understanding of the present disclosure and constitute a part of the specification. Together with the following specific embodiments, they are used to explain the present disclosure but do not constitute a limitation of the present disclosure. In the accompanying drawings: Figure 1 is a front cross-sectional view of a nozzle assembly in a specific embodiment of the present disclosure; Figure 2 is a top cross-sectional view of a nozzle assembly in a specific embodiment of the present disclosure; Figure 3 It is a structural schematic diagram of a crushing mechanism in a specific embodiment of the present disclosure; Figure 4 yes Figure 3 A top-down perspective view of Figure 5 yes Figure 3 Left perspective view of Figure 6 yes Figure 1 A left perspective view of the nozzle body without the adsorption pipe, wherein the front baffle is in an upwardly flipped state; Figure 7 It is a structural schematic diagram of the flow guide structure assembled in the negative pressure chamber in a specific embodiment of the present disclosure.

[0018] Description of Reference Numerals 1-nozzle body, 10-negative pressure chamber, 11-adsorption pipe, 12-opening, 13-first avoidance port, 14-second avoidance port, 15-front baffle, 16-top plate, 17-first driving member, 18-guiding structure, 181-V-shaped guide plate, 2-crushing mechanism, 20-crushing tool assembly, 201-blade, 202-tool rotating shaft, 21-first partition, 22-second partition, 23-slit, 24-cover, 25-second driving member. DETAILED DESCRIPTION

[0019] The specific implementation of the present disclosure is described in detail below in conjunction with the accompanying drawings. It should be understood that the specific implementation described herein is only used to illustrate and explain the present disclosure, and is not used to limit the present disclosure.

[0020] In the present disclosure, unless otherwise stated, the directional words used, such as "upper and lower" generally refer to the upper and lower parts of the suction nozzle assembly in normal use, "inside and outside" refer to the inside and outside relative to the contour of the corresponding parts themselves, "front and back" refer to the front and back of the road sweeper in normal driving state, and "upstream and downstream" refer to the upstream and downstream along the direction of airflow flow, that is, the airflow flows from upstream to downstream. Corresponding to the specific embodiment of the present disclosure, under the suction of the adsorption pipe, the airflow enters the negative pressure chamber from the opening and flows backward into the adsorption pipe. The terms "first", "second", etc. used in the present disclosure are to distinguish one element from another and do not have order and importance. In addition, when the following description refers to the drawings, unless otherwise indicated, the same numbers in different drawings represent the same or similar elements.

[0021] In order to achieve the above-mentioned object, the present disclosure provides a suction nozzle assembly, which can be used in the following road sweeper. Figures 1 to 6 As shown, the suction nozzle assembly may include a suction nozzle body 1 and a crushing mechanism 2. The suction nozzle body 1 may include a negative pressure chamber 10 with a bottom attached to the ground and an adsorption pipe 11 in fluid communication with the negative pressure chamber 10. An opening 12 for waste to enter may be provided at the front side of the negative pressure chamber 10. The adsorption pipe 11 may provide negative pressure for the negative pressure chamber 10. When the road sweeper moves forward, waste on the road surface may enter the negative pressure chamber 10 from the opening 12 under the forward action of the road sweeper and the suction of the adsorption pipe 11, and move toward the adsorption pipe 11.

[0022] The crushing mechanism 2 may include a crushing tool assembly 20 rotatable relative to the suction nozzle body 1, and the rotating shaft 202 of the crushing tool assembly 20 may be arranged at the front side of the adsorption pipe 11 and arranged above the negative pressure chamber 10, that is, the crushing tool assembly 20 as a whole may be arranged upstream of the adsorption pipe 11 along the airflow direction, so that the waste is crushed by the crushing tool assembly 20 before entering the adsorption pipe 11. Based on the opening 12 being arranged at the front side of the negative pressure chamber 10, the airflow in the negative pressure chamber 10 flows from front to back, therefore, most of the structure of the crushing tool assembly 20 is actually arranged at the front side of the adsorption pipe 11, and only the rear end part of the crushing tool assembly 20 enters the adsorption pipe 11. The lower end of the crushing tool assembly 20 can enter the negative pressure chamber 10 through the first avoidance opening 13 on the top wall of the negative pressure chamber 10 to contact with the waste, and the rear end of the crushing tool assembly 20 can enter the adsorption pipe 11 through the second avoidance opening 14 on the side wall of the adsorption pipe 11 to improve the efficiency of the crushed waste being hoisted into the adsorption pipe 11. The crushing mechanism 2 may also include a first partition 21 covering the first avoidance opening 13 and a second partition 22 covering the second avoidance opening 14. The first partition 21 and the second partition 22 may be respectively provided with a slit 23 for the end of the crushing tool assembly 20 to pass through. The rear end of the slit 23 on the first partition 21 may be connected to the lower end of the slit 23 on the second partition 22, so that the end of the crushing tool assembly 20 can smoothly enter the adsorption pipe 11 from the negative pressure chamber 10.

[0023] Through the above technical solution, the suction nozzle assembly provided by the present disclosure includes a suction nozzle body 1 and a crushing mechanism 2, the rotating shaft 202 of the crushing tool assembly 20 is arranged on the front side of the suction pipe 11 and arranged above the negative pressure chamber 10 of the suction nozzle body 1, the lower end of the crushing tool assembly 20 can enter the negative pressure chamber 10 through the first avoidance port 13 to crush the waste entering the negative pressure chamber 10 through the opening 12, and the rear end of the crushing tool assembly 20 can enter the suction pipe 11 through the second avoidance port 14 to winch the crushed waste into the suction pipe 11, thereby accelerating the discharge of the waste. The first partition 21 at the first avoidance port 13 and the second partition 22 at the second avoidance port 14 can not only make the crushing tool assembly 20 contact with the waste through the slit 23 thereon to crush the waste, but also prevent the waste from being entangled on the crushing tool assembly 20, and the slit 23 can also cooperate with the crushing tool assembly 20 to cut the flexible long strip of waste, thereby improving the crushing efficiency of the waste. In addition, the first partition plate 21 and the second partition plate 22 can also guide the airflow in the negative pressure chamber 10 and the adsorption pipe 11, thereby improving the efficiency of the airflow in conveying waste.

[0024] In order to avoid the crushing tool assembly 20 being exposed to the outside, refer to Figure 3As shown, the crushing mechanism 2 may further include a cover shell 24, which may be fixedly connected to the suction nozzle body 1 to surround the outer surface of the suction nozzle body 1 to form a space for accommodating the crushing tool assembly 20, and the rotating shaft 202 may be rotatably connected to the cover shell 24. Specifically, the suction nozzle body 1 may include a top plate 16, which may be used as the top wall of the negative pressure chamber 10, the first avoidance opening 13 may be opened on the top plate 16, and the adsorption pipe 11 may also be arranged on the top plate 16, and the cover shell 24, the top plate 16 and the adsorption pipe 11 may enclose a space for accommodating the crushing tool assembly 20. In addition, the cover shell 24 may be provided with a lower end opening at a position corresponding to the first avoidance opening 13, and the first partition plate 21 may be arranged in the lower end opening, and the cover shell 24 may be provided with a rear side opening at a position corresponding to the second avoidance opening 14, and the second partition plate 22 may be arranged in the rear side opening.

[0025] In the actual manufacturing process, as an option, the rear opening of the cover shell 24 can be fixedly connected to the tube wall of the adsorption pipe 11, the lower end opening of the cover shell 24 can be fixedly connected to the top plate 16, the first partition 21 can be covered in the above lower end opening, and the second partition 22 can be covered in the above rear opening, that is, the outer contour of the first partition 21 is located on the inner side of the inner contour of the above lower end opening, and the outer contour of the second partition 22 is located on the inner side of the inner contour of the above rear opening. Among them, the cover shell 24, the top plate 16 and the adsorption pipe 11 can be formed in one piece.

[0026] As another option, the edge of the first partition 21 can be fixedly connected to the lower opening of the cover shell 24, and the edge of the second partition 22 can be fixedly connected to the rear opening of the cover shell 24, that is, the first partition 21, the second partition 22 and the cover shell 24 surround and form a space for accommodating the crushing tool assembly 20. By fixing the first partition 21, the second partition 22 and the cover shell 24, and accommodating the crushing tool assembly 20 in the space formed by the above three, the crushing mechanism 2 can be installed on the suction nozzle body 1 as a complete module. This can improve the assembly efficiency and facilitate the inspection and maintenance of the crushing mechanism 2.

[0027] Among them, reference Figure 4 As shown, the first partition plate 21 can be constructed as a flat plate structure, so as to be used as a part of the top wall of the negative pressure chamber 10 after being installed in the first avoidance port 13, so as to avoid the flow field in the negative pressure chamber 10 being affected and reducing the efficiency of conveying waste. Figure 1 As shown, the second partition 22 can be constructed as an arc-shaped plate structure protruding toward the outside of the adsorption pipe 11, so that it can be used as a part of the side wall of the adsorption pipe 11 after being installed in the second avoidance port 14, thereby avoiding that the gas flow field in the adsorption pipe 11 is affected and the waste transportation efficiency is reduced.

[0028] refer to Figures 1 to 5 As shown, the crushing tool assembly 20 may further include a blade 201 fixedly connected to the rotating shaft 202, the blade 201 may extend radially along the rotating shaft 202, and the blade 201 may pass through the slit 23 and enter the negative pressure chamber 10 and the adsorption pipe 11 during the rotation of the rotating shaft 202. By providing the first partition 21 and the second partition 22, the rotating shaft 202 can be separated from the negative pressure chamber 10 and the adsorption pipe 11, thereby preventing waste from being entangled on the rotating shaft 202.

[0029] In order to drive the rotating shaft 202 to rotate, refer to Figure 4 and Figure 5 As shown, a second driving member 25 may be further provided on the cover shell 24 to drive the rotating shaft 202 to rotate. The second driving member 25 may be a hydraulic motor.

[0030] In order to improve the crushing efficiency of the crushing tool assembly 20 on the waste, refer to Figure 1 , Figure 2 , Figure 4 as well as Figure 5 As shown, the crushing tool assembly 20 may include multiple groups of blades 201, each group of blades 201 includes multiple blades 201, and the multiple groups of blades 201 can be evenly spaced and arranged along the central axis direction of the rotating shaft 202 to increase the crushing width and hoisting width of the crushing tool assembly 20 along the central axis direction of the rotating shaft 202. Multiple blades 201 in the same group of blades 201 can be arranged in an array around the central axis of the rotating shaft 202 to increase the crushing speed of the waste.

[0031] Accordingly, refer to Figure 4 As shown, the first partition plate 21 may be provided with a plurality of slits 23 extending in parallel, and the plurality of slits 23 on the first partition plate 21 may be evenly spaced and arranged along the central axis direction of the rotating shaft 202 to correspond one-to-one with the positions of the plurality of blade groups 201, that is, each blade group 201 corresponds to a slit 23 of the first partition plate 21, and during the rotation of the rotating shaft 202, the plurality of blades 201 in the blade group 201 pass through the slits 23 in sequence. Figure 1 As shown, the second partition 22 may also be provided with a plurality of slits 23 extending in parallel, and the plurality of slits 23 on the second partition 22 may also be evenly spaced apart along the central axis direction of the rotating shaft 202 to correspond one-to-one with the positions of the plurality of groups of blades 201, that is, each group of blades 201 corresponds to a slit 23 of the second partition 22, and during the rotation of the rotating shaft 202, the plurality of blades 201 in the group of blades 201 pass through the slit 23 in sequence.

[0032] It should be noted that the length of the slit 23 is related to the position of the rotating shaft 202 and the length of the blade 201 , and the length of the slit 23 is suitable for the blade 201 to smoothly pass through the first partition plate 21 and the second partition plate 22 .

[0033] In order to ensure the cutting effect of the blade 201 and the slit 23 on the waste, when the blade 201 passes through the slit 23, the distance between the outer surface of the blade 201 and the inner wall of the slit 23 can be 1 mm to 3 mm, preferably 2 mm, so that the blade 201 and the slit 23 cooperate to have a sufficiently large cutting force acting on the waste.

[0034] When the road sweeper is moving forward normally and the suction nozzle assembly is working normally, under the adsorption effect of the adsorption pipe 11, negative pressure is formed in the negative pressure chamber 10, and the waste on the road surface can enter the negative pressure chamber 10 through the opening 12 and contact the lower end of the crushing tool assembly 20. Figure 3 In the direction of the drawing, the rotating shaft 202 can rotate clockwise, so that the crushing tool assembly 20 can roll the waste into the adsorption pipe 11 during the rotation process. More specifically, as the rotating shaft 202 rotates, the end of the blade 201 (i.e., the end away from the rotating shaft 202) first passes through the slit 23 on the first partition 21 to contact the waste in the negative pressure chamber 10, and then the end of the blade 201 drives the waste to move toward the adsorption pipe 11 until the end of the blade 201 passes through the slit 23 on the second partition 22 to roll the waste into the adsorption pipe 11. At this time, smaller-sized sheet waste in the waste can be separated from the blade 201 under the action of the second partition 22 after entering the adsorption pipe 11, so that it can be directly sucked into the garbage collection box on the sweeper, while long strips of waste with a certain degree of flexibility, such as ropes, cloth strips, plastic bags, etc. in the waste are mostly hung on the blade 201 and cannot be separated from the blade 201. When the blade 201 rotates from the adsorption pipe 11 toward the cover 24, that is, when the blade 201 is pulled out of the adsorption pipe 11 through the slit 23 on the second partition 22, the above-mentioned long strips of waste will be cut and separated from the blade 201, and then sucked into the garbage collection box.

[0035] From the above description of the dynamic working process of the suction nozzle assembly, it can be seen that the first partition 21 and the second partition 22 can not only prevent the waste from entering the cover 24 and entangled with the rotating shaft 202, but also cooperate with the slit 23 to cut the long strips of waste, thereby improving the crushing efficiency and transportation efficiency of the waste.

[0036] In order to avoid clogging of the opening 12 when there is a lot of waste, refer to Figure 2 and Figure 6As shown, the nozzle body 1 may further include a front baffle 15 flippably connected to the upper edge of the opening 12, and the front baffle 15 can adjust the size of the opening 12. When there is less waste on the ground, the front baffle 15 can flip downward to partially cover the opening 12, thereby reducing the size of the opening 12 and increasing the air flow speed of the opening 12. When there is more waste on the ground, the front baffle 15 can flip upward to increase the size of the opening 12, making it easier for waste to flow into the negative pressure chamber 10, thereby preventing waste from blocking the opening 12.

[0037] In order to realize the reversible connection between the front baffle 15 and the upper edge of the opening 12, refer to Figure 1 , Figure 2 as well as Figure 6 As shown, the nozzle body 1 may include a top plate 16, to which a first driving member 17 may be connected, and an output end of the first driving member 17 may be rotatably connected to the front baffle 15 to drive the front baffle 15 to flip upward or downward.

[0038] Specifically, refer to Figure 6 As shown, the first driving member 17 can be a cylinder, the cylinder seat of the cylinder can be rotatably connected to the top plate 16, and the piston of the cylinder can be rotatably connected to the front baffle 15. When the piston retracts into the cylinder seat, it can drive the front baffle 15 to flip upward, and when the piston extends from the cylinder seat, it can drive the front baffle 15 to flip downward.

[0039] In order to make the waste entering the negative pressure chamber 10 flow toward the adsorption pipe 11, refer to Figure 7 As shown, a guide structure 18 may be provided in the negative pressure chamber 10 , and the guide structure 18 can guide the waste in the negative pressure chamber 10 to the bottom of the adsorption pipe 11 .

[0040] In the specific embodiments of the present disclosure, reference is made to Figure 7 As shown, the guide structure 18 may include a V-shaped guide plate 181, the upper end of the V-shaped guide plate 181 is connected to the top wall of the negative pressure chamber 10, the lower end of the V-shaped guide plate 181 is attached to the ground, the V-shaped guide plate 181 may extend from the rear side of the adsorption pipe 11 to the opening 12, the tip of the V-shaped guide plate 181 may be arranged at the rear side of the adsorption pipe 11, and the open end of the V-shaped guide plate 181 may face the opening 12. That is, the V-shaped guide plate 181 can separate a V-shaped cavity in the negative pressure chamber 10, the open end of the V-shaped cavity faces the opening 12, the lower end opening of the adsorption pipe 11 may be located in the V-shaped cavity, and located in front of the tip of the V-shaped cavity, the first avoidance port 13 may be located on the top wall of the V-shaped cavity (that is, the first avoidance port 13 is arranged on the portion of the top plate 16 located in the V-shaped cavity), and located in front of the lower end opening of the adsorption pipe 11, for details, please refer to Figure 7 ,Although Figure 7The first avoidance opening 13 is not actually shown in the figure, but the first avoidance opening 13 can be located above the adsorption pipe 11 in the direction of the drawing. After the waste enters the negative pressure chamber 10, it moves backward with the airflow. When the waste contacts the V-shaped guide plate 181, it can gather toward the tip of the V-shaped guide plate 181. During the gathering process, the waste can be crushed by the crushing tool assembly 20 first, and then enter the adsorption pipe 11.

[0041] On the basis of the above technical solution, the present disclosure also provides a road sweeper, including the suction nozzle assembly in the above technical solution.

[0042] Through the above technical solution, the road sweeper provided by the present invention has the same technical effect as the suction nozzle assembly in the above technical solution, and in order to avoid unnecessary repetition, it will not be described here.

[0043] The preferred embodiments of the present disclosure are described in detail above in conjunction with the accompanying drawings; however, the present disclosure is not limited to the specific details in the above embodiments. Within the technical concept of the present disclosure, a variety of simple modifications can be made to the technical solution of the present disclosure, and these simple modifications all fall within the protection scope of the present disclosure.

[0044] It should also be noted that the various specific technical features described in the above specific embodiments can be combined in any suitable manner without contradiction. In order to avoid unnecessary repetition, the present disclosure will not further describe various possible combinations.

[0045] In addition, various embodiments of the present disclosure may be arbitrarily combined, and as long as they do not violate the concept of the present disclosure, they should also be regarded as the contents disclosed by the present disclosure.

Claims

1. A nozzle assembly, characterized in that: include: The suction nozzle body comprises a negative pressure chamber whose bottom is attached to the ground and an adsorption pipe connected to the negative pressure chamber, wherein an opening for waste to enter is arranged at the front side of the negative pressure chamber, and the adsorption pipe can provide negative pressure for the negative pressure chamber, and The crushing mechanism includes a crushing tool assembly rotatable relative to the suction nozzle body, the rotating shaft of the crushing tool assembly is arranged on the front side of the adsorption pipe and above the negative pressure chamber, the lower end of the crushing tool assembly can enter the negative pressure chamber through a first avoidance port on the top wall of the negative pressure chamber, and the rear end of the crushing tool assembly can enter the adsorption pipe through a second avoidance port on the side wall of the adsorption pipe. The crushing mechanism also includes a first partition covering the first avoidance port and a second partition covering the second avoidance port. The first partition and the second partition are respectively provided with slits for the end of the crushing tool assembly to pass through, and the rear end of the slit of the first partition is connected to the lower end of the slit of the second partition.

2. The nozzle assembly according to claim 1, characterized in that: The pulverizing mechanism further comprises a cover shell, which is fixedly connected to the suction nozzle body to surround the outer surface of the suction nozzle body to form a space for accommodating the pulverizing tool assembly, and the rotating shaft is rotatably connected to the cover shell. The first partition plate is arranged in the lower end opening of the casing, and the second partition plate is arranged in the rear side opening of the casing.

3. The nozzle assembly according to claim 2, characterized in that: The crushing tool assembly further comprises a blade fixedly connected to the rotating shaft, the blade extending in the radial direction of the rotating shaft, and the blade being able to pass through the slit during the rotation of the rotating shaft, the crushing tool assembly comprises a plurality of groups of the blades, each group of the blades comprising a plurality of the blades, The plurality of blades are evenly spaced and arranged along the central axis of the rotating shaft. A plurality of blades in the same blade group are arranged in an array around the central axis of the rotating shaft.

4. The nozzle assembly according to claim 3, characterized in that: The first partition is provided with a plurality of slits extending in parallel, and the plurality of slits on the first partition are evenly spaced and arranged along the central axis direction of the rotating shaft to correspond one by one to the positions of the plurality of blade groups. The second partition plate is provided with a plurality of slits extending in parallel, and the plurality of slits on the second partition plate are evenly spaced and arranged along the central axis direction of the rotating shaft to correspond one-to-one to the positions of the plurality of groups of blades.

5. The nozzle assembly according to claim 3, characterized in that: The distance between the outer surface of the blade and the inner wall of the slit is 1 mm to 3 mm.

6. The nozzle assembly according to claim 1, characterized in that: The first partition is constructed as a flat plate structure to form a part of the top wall of the negative pressure chamber. The second partition plate is configured as an arc-shaped plate structure protruding toward the outside of the adsorption pipe to form a part of the side wall of the adsorption pipe.

7. The nozzle assembly according to claim 1, characterized in that: The nozzle body further comprises a front baffle which is flipably connected to the upper edge of the opening, and the front baffle can adjust the size of the opening.

8. The nozzle assembly according to claim 7, characterized in that: The nozzle body comprises a top plate, a first driving member is connected to the top plate, and an output end of the first driving member is rotatably connected to the front baffle to drive the front baffle to flip upward or downward.

9. The nozzle assembly according to claim 1, characterized in that: The negative pressure chamber is provided with a guide structure, which can guide the waste in the negative pressure chamber to the bottom of the adsorption pipe, and the guide structure includes a V-shaped guide plate, the upper end of the V-shaped guide plate is connected to the top wall of the negative pressure chamber, and the lower end of the V-shaped guide plate is attached to the ground. The V-shaped guide plate extends from the rear side of the adsorption pipe to the opening, the tip of the V-shaped guide plate is arranged on the rear side of the adsorption pipe, and the opening end of the V-shaped guide plate faces the opening.

10. A road sweeper, characterized in that: A nozzle assembly comprising any one of claims 1 to 9.

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