Multifunctional blowing and sucking machine

Abstract

The application provides a multifunctional blowing and sucking machine, which comprises a frame, a blowing and sucking mechanism and a handrail mechanism, the frame serves as a support and mounting carrier, and a power mechanism and a walking mechanism are arranged on the frame; the blowing and sucking mechanism is mounted on the frame and is used for sucking materials and discharging the materials from a discharge end, and a crushing assembly is arranged in the blowing and sucking mechanism; and the handrail mechanism is mounted on the end of the frame and is used for hand holding to control the walking direction of the frame. The multifunctional blowing and sucking machine has the advantages of compact structure, convenient assembly, realization of snow lifting, snow crushing, branch crushing or other ground cleaning operation, various functions, wide application range and scene, realization of automatic walking through the walking mechanism, labor saving in operation, convenient and fast assembly of each component, convenient transportation, small space occupation of the folding handrail mechanism in idle state, quick replacement of plugs or feeding pipes according to requirements through the buckle type structure, and satisfaction of different use requirements.

Description

Technical Field

[0001] This invention relates to a cleaning device, and more particularly to a multifunctional blower / vacuum cleaner. Background Technology

[0002] A leaf blower is an outdoor cleaning power tool primarily used for cleaning and collecting fallen leaves. It works by blowing leaves away from the ground or sucking them into a collection bag. Existing leaf blowers are limited in function, only capable of sucking and blowing leaves, thus restricting their application. Therefore, our company has developed a leaf blower that combines blowing and suction with snow removal and branch clipping functions, and can achieve automatic or semi-automatic feeding. Summary of the Invention

[0003] The technical problem to be solved by the present invention is to provide a multi-functional blower and suction machine that is compact in structure, easy to operate, and capable of blowing snow, crushing snow and breaking branches.

[0004] This invention provides a multifunctional blow-and-suction machine, comprising:

[0005] The frame 1 serves as a support and mounting carrier, and the frame 1 is equipped with a power mechanism and a walking mechanism.

[0006] A blowing and suction mechanism 2 is installed on the frame 1 and is used to suck up materials and discharge them from the discharge end. The blowing and suction mechanism is equipped with a crushing component.

[0007] Handrail mechanism 9 is installed at the end of the frame 1 and is used for hand grip to control the direction of the frame's movement.

[0008] Furthermore, the crushing component is a cutter 33 and / or an agitator 4.

[0009] Furthermore, the blowing and suction mechanism 2 includes a volute body, an impeller 3 is rotatably mounted inside the volute body, a cutter 33 is provided at the rear end of the impeller 3, a feed pipe 21 is provided on the rear end face of the volute body, and the outlet end of the feed pipe 21 is located on the rotation path of the cutter 33; an inlet for air intake or material intake is provided on the front end face of the volute body, and a discharge port 200a for material discharge is provided on the side wall of the volute body.

[0010] Furthermore, the stirring cage 4 includes an arc-shaped fixed tooth plate 41, at least two fixed tooth plates are arranged in parallel, and a gap is provided between two adjacent fixed tooth plates 41 to form a crushing area; the impeller 3 has a moving tooth plate 324 on its edge, and the crushing area is located on the movement path of the moving tooth plate 324.

[0011] Furthermore, a nozzle roller brush assembly is detachably installed on the inlet. The lower end of the nozzle roller brush assembly is provided with a first feed port 52. A roller brush 7 is rotatably installed on the first feed port 52. A second feed port 51 is provided on the side wall of the nozzle roller brush assembly. A baffle and a plug are detachably installed on the first feed port and the second feed port respectively, and one of the first feed port or the second feed port can be connected to the inlet.

[0012] Furthermore, the arcuate sidewall of the volute body includes a first arcuate surface 202a, a second arcuate surface 202b, a third arcuate surface 202c, and a fourth arcuate surface 202d connected in sequence. The discharge port is located between the first arcuate surface and the fourth arcuate surface. The centers of the first arcuate surface 202a, the second arcuate surface 202b, the third arcuate surface 202c, and the fourth arcuate surface 202d form a rectangular structure. The axis of the impeller 3 is coaxial with the second arcuate surface 202b.

[0013] Furthermore, the nozzle roller brush assembly includes a nozzle housing 5 and a transmission assembly 8. The nozzle housing 5 has an air cavity 500 formed inside. The rear side wall of the air cavity 500 is provided with a discharge port 50, which is connected to the inlet end of the blowing and suction mechanism 2. The bottom of the air cavity 500 is provided with a strip-shaped first feed port 52. The transmission assembly 8 is installed on the side wall of the nozzle housing 5. The output end of the transmission assembly 8 is connected to the roller brush 7 and is used to drive the roller brush 7 to rotate. The input end of the transmission assembly 8 is connected to the power mechanism.

[0014] Furthermore, the roller brush 7 includes a roller brush body and a main shaft sleeved on the roller brush body. The roller brush body includes roller brush seats 72 that are alternately sleeved on the main shaft. At least two mounting posts 722 are evenly distributed around the front end of the roller brush seat 72. A brush seat 73 is sleeved on the mounting post 722. The side wall of the brush seat 73 is provided with bristles. The rear end of the roller brush seat 72 is provided with a mounting hole 723 that allows the mounting post 722 on the rear roller brush seat 72 to be inserted and connected. The mounting hole 723 and the mounting post 722 are alternately arranged.

[0015] Furthermore, the transmission assembly 8 includes a housing 85 fixed to the side wall of the nozzle housing 5, a drive wheel and a driven wheel 86 rotatably mounted inside the housing 85, the driven wheel 86 being connected to the drive wheel via a belt 81, the driven wheel 86 being connected to the roller brush 7, and the drive wheel having a third connecting part for connecting to a power mechanism; the belt having a controllable tensioning assembly, which can control the tension of the belt to achieve engagement and disengagement between the drive wheel and the driven wheel.

[0016] Furthermore, the height of the nozzle roller brush assembly or the nozzle roller cutter assembly is adjustable.

[0017] This invention relates to a multi-functional blower / vacuum cleaner with a compact structure and easy assembly. It can perform snow blowing, snow and twig cleaning, or other ground cleaning operations, offering diverse functions and a wide range of applications. It features a walking mechanism for automatic movement, reducing operational effort. All components are detachable, facilitating quick and easy assembly and transportation. The foldable handle design minimizes space occupation when not in use. The snap-fit ​​structure allows for quick replacement of plugs or feed pipes to meet various usage requirements. Attached Figure Description

[0018] Figure 1 This is a schematic diagram of the structure of the multifunctional blow-and-suction machine of the present invention;

[0019] Figure 2 This is a schematic diagram of the blowing and suction mechanism of the multifunctional blowing and suction machine of the present invention;

[0020] Figure 3 This is a schematic diagram of the blowing and suction mechanism of the multifunctional blowing and suction machine of the present invention in one embodiment;

[0021] Figure 4 This is a schematic diagram of the blowing and suction mechanism of the multifunctional blowing and suction machine of the present invention, according to a second embodiment.

[0022] Figure 5 This is a schematic diagram of the volute of the multifunctional blow-suction machine of the present invention;

[0023] Figure 6 This is a schematic diagram of the internal structure of the volute of the multifunctional blow-suction machine of the present invention;

[0024] Figure 7 This is a cross-sectional view of the volute of the multifunctional blow-suction machine of the present invention;

[0025] Figure 8 This is a schematic diagram of the volute of the multifunctional blow-suction machine of the present invention;

[0026] Figure 9 This is a schematic diagram of the installation of the stirring cage of the multifunctional blowing and suction machine of the present invention;

[0027] Figure 10 This is a schematic diagram of the agitator cage of the multifunctional blow-suction machine of the present invention;

[0028] Figure 11 This is a schematic diagram of the agitator cage of the multifunctional blow-suction machine of the present invention from another angle;

[0029] Figure 12 This is a schematic diagram of the impeller structure of the multifunctional blow-suction machine of the present invention;

[0030] Figure 13This is a schematic diagram of the impeller of the multifunctional blow-suction machine of the present invention from another angle;

[0031] Figure 14 This is a front view of the impeller of the multifunctional blow-suction machine of the present invention;

[0032] Figure 15 This is an exploded structural diagram of the impeller of the multifunctional blow-suction machine of the present invention;

[0033] Figure 16 This is a schematic diagram of the impeller disk of the multifunctional blow-suction machine of the present invention;

[0034] Figure 17 This is a schematic diagram of the impeller blades of the multifunctional blow-suction machine of the present invention;

[0035] Figure 18 This is a schematic diagram of the blade structure of the multifunctional blow-suction machine of the present invention;

[0036] Figure 19 This is a schematic diagram of the bushing structure of the multifunctional blow-suction machine of the present invention;

[0037] Figure 20 This is a schematic diagram of the installation of the nozzle housing of the multifunctional blow-and-suction machine of the present invention;

[0038] Figure 21 This is a schematic diagram of the handrail mechanism of the multifunctional blow-suction machine of the present invention;

[0039] Figure 22 This is a schematic diagram of the pull rod structure of the handrail mechanism of the multifunctional blow-suction machine of the present invention;

[0040] Figure 23 for Figure 22 Enlarged view of section A in the middle;

[0041] Figure 24 This is a side view of the handrail mechanism of the multifunctional blow-suction machine of the present invention;

[0042] Figure 25 for Figure 24 Enlarged view of section B in the middle;

[0043] Figure 26 This is a schematic diagram of the folded state of the handrail mechanism of the multifunctional blow-suction machine of the present invention;

[0044] Figure 27 This is a schematic diagram of the air nozzle roller brush assembly of the multifunctional blower / vacuum machine of the present invention;

[0045] Figure 28 This is a schematic diagram of another state of the nozzle roller brush assembly of the multifunctional blower of the present invention;

[0046] Figure 29 This is a schematic diagram of the installation of the roller brush in the multifunctional blow-suction machine of the present invention;

[0047] Figure 30 This is a cross-sectional view of the nozzle roller brush assembly of the multifunctional blow-and-suction machine of the present invention;

[0048] Figure 31 This is a schematic diagram of another embodiment of the nozzle roller brush assembly of the multifunctional blow-and-suction machine of the present invention;

[0049] Figure 32 This is a schematic diagram of the transmission component of the nozzle roller brush assembly of the multifunctional blower of the present invention;

[0050] Figure 33 for Figure 32 Enlarged view of section C;

[0051] Figure 34 This is a schematic diagram of the quick-assembly assembly of the multifunctional blow-suction machine of the present invention;

[0052] Figure 35 This is a schematic diagram of the structure of the roller brush seat of the nozzle roller brush assembly of the multifunctional blower and suction machine of the present invention;

[0053] Figure 36 This is an exploded schematic diagram of the brush holder of the nozzle brush assembly of the multifunctional blower of the present invention;

[0054] Figure 37 This is a schematic diagram of the structure of the front cover of the nozzle roller brush assembly of the multifunctional blower of the present invention;

[0055] Figure 38 This is a schematic diagram of the structure of the roller brush seat body of the multifunctional blow-suction machine of the present invention;

[0056] Figure 39 This is a schematic diagram of the roller brush seat body of the multifunctional blow-suction machine of the present invention from another angle; Detailed Implementation

[0057] The embodiments of the present invention will now be described in detail with reference to the accompanying drawings.

[0058] See Figures 1-39 The present invention provides a multifunctional blow-vacuum machine, which includes a frame 1, a blow-vacuum mechanism 2 and a handrail mechanism 9;

[0059] The frame 1 serves as a support and mounting carrier for mounting other components. A power mechanism and a walking mechanism are provided on the frame 1. The power mechanism can be a diesel engine, a gasoline engine, or an electric motor. The walking mechanism includes wheels mounted at the bottom of the frame 1 and a transmission mechanism connected to the power mechanism. The blowing and suction mechanism 2 is mounted on the frame 1 and is used to suck up materials and discharge them from the discharge end. The blowing and suction mechanism is equipped with a crushing component, which consists of a blade 33 and a whirlpool 4. It can perform snow blowing, snow crushing, branch crushing, and other cleaning work.

[0060] A nozzle roller brush assembly is detachably installed on the inlet of the blowing and suction mechanism. A first feed port 52 is provided at the lower end of the nozzle roller brush assembly. A roller brush 7 is rotatably installed on the first feed port 52. The roller brush can realize auxiliary feeding. At the same time, a second feed port 51 is provided on the side wall of the nozzle roller brush assembly. A plug or feed hose 6 is detachably installed on the second feed port 51. Installing different components can meet different working conditions.

[0061] The handrail mechanism 9 is installed at the end of the frame 1 for hand support to control the direction of the frame's movement. The handrail mechanism 9 is equipped with a control component for controlling the walking mechanism and the blowing and suction mechanism. In this application, the handrail mechanism is foldable.

[0062] The height of the blowing and suction mechanism is adjustable. Specifically, a support wheel is provided at the bottom of the frame 1. The height distance between the support wheel and the frame is adjusted by an adjusting screw, thereby realizing the height adjustment of the blowing and suction mechanism.

[0063] The structure of each organization is described in detail below:

[0064] For the blowing and suction mechanism, please refer to [link / reference]. Figures 5-11 This device can crush ice, snow, and branches, and discharge the crushed material. It includes a volute body made of metal, specifically a volute base plate 201 and a volute cover bolted to the base plate 201. A working cavity 200 is formed within the volute body, and an impeller 3 is rotatably mounted within this cavity. A cutter 33 is located at the rear end of the impeller 3, specifically mounted on the impeller disk 31 of the impeller 3, and has high strength. There are at least two cutters 33 evenly distributed circumferentially, each with a cutting edge 331 facing the (rotational) direction of the impeller 3, and a gap between the cutting edge and the end face of the cutter 33 for crushing branches or ice. A feed pipe 21 is located at the rear end of the volute body; specifically, a feed hole 21 is located on the side wall of the volute base plate 201. 10. The feed pipe 21 is connected to the feed hole 210 and is used to allow ice or branches to enter. The feed pipe 21 is a funnel shape with a large inlet end and a small outlet end to facilitate feeding. In this embodiment, the feed pipe 21 is inclined. Specifically, there is an angle between the axis of the feed pipe 21 and the horizontal plane and the rear end face of the volute body to facilitate feeding operation. The outlet end of the feed pipe 21 is connected to the working chamber 200, and the outlet end of the feed pipe is located on the rotation path of the cutter 33. During the rotation of the impeller, the cutter 33 can crush the material fed from the feed pipe, such as branches and ice. An inlet is provided on the front end face of the volute body. The inlet is located on the volute cover and is used for air intake or material intake, such as snow intake during snowfall. The inlet is coaxial with the impeller 3. The side wall of the working chamber 200 is provided with a discharge port 200a for material discharge.

[0065] See Figure 8In this application, the arcuate sidewall of the volute body includes a first arcuate surface 202a, a second arcuate surface 202b, a third arcuate surface 202c, and a fourth arcuate surface 202d that are connected and tangent to each other in sequence. The discharge port is located between the first arcuate surface and the fourth arcuate surface. The center (axis) Oa of the first arcuate surface 202a, the center (axis) Ob of the second arcuate surface 202b, the center (axis) Oc of the third arcuate surface 202c, and the center (axis) Od of the fourth arcuate surface 202d form a rectangular structure, and the axis of the impeller 3 is coaxial with the second arcuate surface 202b.

[0066] To improve the crushing effect, in this embodiment, a stirring cage 4 for crushing is provided in the working chamber 200. The stirring cage 4 is arc-shaped and located between the impeller 3 and the discharge port 200a, and is located on the outer edge of the impeller. Specifically, the stirring cage 4 includes an arc-shaped fixed tooth plate 41, which is coaxial with the impeller 3. There are at least two fixed tooth plates 41, which are arranged parallel to each other along the axial direction of the impeller 3. In this embodiment, there are 4-6 fixed tooth plates 41. The central angle of the arc-shaped fixed tooth plate 41 is greater than or equal to 160 degrees and less than or equal to 300 degrees. Its large central angle can achieve high-efficiency crushing. The crushing effect is good. The blades are equidistantly arranged in the working chamber along the length of the impeller 3. There is a gap between two adjacent fixed tooth plates 41, forming a crushing zone. At the same time, a moving tooth plate 324 is provided on the edge (outer end) of the blade 32 of the impeller 3. The crushing zone is located on the movement path of the moving tooth plate 324. When the moving tooth plate 324 is in the crushing zone, there is a gap between the side wall of the moving tooth plate 324 and the fixed tooth plate. That is, the moving tooth plate is located at the center of two adjacent fixed tooth plates. The number of moving tooth plates is 3-5. The moving tooth plate and the fixed tooth plate can further crush the material, improving the crushing stability and reliability.

[0067] At least two mounting holes are provided on each fixed tooth plate. During assembly, the fixed tooth plate and the first bushing 42 are sequentially fitted onto the mounting shaft. The bushing is used to set the spacing between two adjacent fixed tooth plates, thereby realizing the assembly of the agitator.

[0068] The discharge port 200a is set upward, and a discharge assembly is installed on the discharge port. The discharge assembly includes a discharge pipe support 22 installed on the discharge port and a discharge pipe detachably installed on the discharge pipe support 22. The discharge pipe can be a rigid pipe or a flexible pipe. When it is a rigid pipe, it is L-shaped and can rotate to achieve quick adjustment of the discharge direction. The material discharged from the discharge port can be transported to the storage box or storage bag through the discharge pipe, or the material can be directly discharged to the outside.

[0069] This blowing and suction mechanism is equipped with a feed pipe and blades, enabling rapid crushing of ice and branches with high efficiency and effectiveness, while remaining safe and reliable. The inclined feed pipe facilitates feeding, improving efficiency and operator comfort. A stirring cage further crushes materials within the working chamber, enhancing crushing efficiency and effectiveness, preventing large pieces from accumulating, improving smooth operation, and avoiding jamming. A large-angle fixed-tooth plate structure increases the crushing area, further improving efficiency and effectiveness. The optimized design of the volute body reduces operating noise and increases airflow, providing strong suction and blowing power. An inlet at the front of the volute can be used for air or material intake, facilitating snow suction and dispersal operations. A detachable discharge pipe allows for selection of different pipes to meet specific needs, making installation and removal convenient and labor-saving.

[0070] Impeller, see Figures 12-19 It includes a circular impeller disk 31, with a fourth connecting part at the center of the impeller disk 31. The fourth connecting part is used to connect with the output shaft on the power mechanism and realize rotation. In this embodiment, a central hole 310 is opened in the center of the impeller disk 31, and a bushing 34 is provided in the central hole. The bushing has a stepped surface 341, which contacts the disk surface of the impeller disk 31 to realize axial positioning. Connecting holes 340 are provided through both ends of the bushing, and keyways are provided in the connecting holes. The bushing 34 is fixedly connected in the central hole and forms the fourth connecting part.

[0071] Blades are fixed on the front end surface of the impeller disk 31. There are at least two blades evenly distributed circumferentially. In this embodiment, there are five blades 32, and the surfaces of the blades are perpendicular to the surface of the impeller disk 31. A movable toothed plate 324 is provided at the outer end of the blade 32 (away from the center). The movable toothed plate 324 is a plate (sheet) structure, and its surface is parallel to the impeller disk 31. Located outside the impeller disk 31, the movable toothed plate 324 has a large centrifugal force when rotating at high speed, enabling it to break objects, such as ice and snow. It also has a certain thickness, typically 2mm-10mm, providing high structural strength and ensuring the breaking function. To improve reliability and increase crushing area, crushing effect and crushing efficiency, there are at least two moving toothed plates 324, which are arranged sequentially along the width direction of the blade 32. In this embodiment, there are at least three moving toothed plates 324, which are equidistantly arranged along the width direction of the blade 32, that is, the distance between two adjacent moving toothed plates is the same. There are mounting slot groups evenly distributed circumferentially on the impeller disk 31. Each mounting slot group includes at least two mounting slots 311. In this embodiment, the mounting slot is strip-shaped. At the same time, there are mounting protrusions 322 on the side wall of the blade 32 that correspond to the mounting slots 311. The mounting protrusions 322 are inserted into the mounting slots 311 and achieve positioning installation.

[0072] See Figure 17The blade 32 includes a blade body with a dividing groove that divides the blade body into a first blade 321 and a second blade 323. The first blade 321 is located on the side away from the impeller disk, i.e., on the outer side. The length of the first blade 321 is less than the length of the second blade 323. The second blade is bent to one side with a bending angle greater than or equal to 20 degrees and less than or equal to 30 degrees with the first blade. The second blade 323 extends radially outward to the outside of the impeller disk. A moving tooth plate 324 is installed at the outer end of the second blade 323. A hole 320 is provided at the root of the blade body.

[0073] See Figure 13 and Figure 18 A blade 33 is provided on the rear end surface of the impeller disk 31. In this embodiment, there are at least two blades 33, which are evenly distributed circumferentially. A blade 331 is provided on the side wall of the blade 33, which faces the forward direction of the impeller disk 31. A gap is provided between the blade 331 and the disk surface of the impeller disk 31 for crushing branches or ice. Specifically, a mounting hole 312 is provided on the disk surface of the impeller disk, and the blade is fixed to the mounting hole by bolts. The blade is a rectangular structure, preferably a plate-like structure with a certain thickness. In this embodiment, the thickness is 5mm-10mm. One side wall of the blade is beveled and forms a blade surface. The end of the blade surface forms a blade, which is located on the side away from the impeller disk.

[0074] The impeller features moving toothed plates at the blade tips, enabling it to crush snow or ice during rotation. Its high kinetic energy and excellent crushing effect are achieved through its multi-toothed plate structure, resulting in a large crushing area, high efficiency, and good effect. The double-blade structure further enhances the crushing effect while generating sufficient wind power, providing both high suction and high blowing force. Mounting slots on the impeller disk allow for rapid blade positioning and installation, improving assembly efficiency and precision, and ensuring good overall balance. Cutters on the back of the impeller disk enable the crushing of branches and ice.

[0075] The mounting structure of the nozzle roller brush assembly includes a working cavity formed within the volute body. The working cavity is cylindrical in shape, and an impeller is installed inside the working cavity. The axis of the impeller is parallel to the axis of the working cavity. An inlet is provided on the front side wall of the working cavity for feeding. The axis of the inlet is coaxial or parallel to the axis of the working cavity. In this embodiment, the ratio of the diameter of the inlet to the diameter (inner diameter) of the working cavity is 0.45-0.65. A nozzle fixing assembly is provided on the edge of the inlet, and the nozzle (roller brush assembly) is detachably installed on the nozzle fixing assembly.

[0076] Handrail mechanism 9, see reference Figures 21-26The handrail mechanism is foldable and includes a handrail body 91 and two support rods 97. Both the support rods 97 and the handrail body 91 are made of steel pipe. Specifically, the handrail body includes a horizontally arranged first rod 911. The two ends of the first rod 911 are bent forward to form a second rod 912. The ends of the second rod 912 are bent downward to form a connecting rod 913. The connecting rods at both ends are parallel to each other. A second connecting part 98 for connecting to the frame is provided at the lower end of the support rod 97. The second connecting part has a hole for the support rod to pass through and a mounting hole for connecting to the frame. The support rods 97 are parallel to each other. The upper end of the support rod 97 is bent outward to form a fourth rod, and the end of the fourth rod is bent upward to form a fifth rod. The fifth rods on the two support rods 97 are parallel to each other. This structure increases the width of the handrail and facilitates operation. A hinge part 95 is fixed to the side wall of the support rod 97. Specifically, the hinge part is installed on the fifth rod. In this embodiment, the hinge part 95 is U-shaped, and one end of its closed end is welded to the fifth rod. The connecting rod 913 is hinged to the hinge part 95 by a pin, and the plane formed by the connecting rod 913 and the support rod 97 is perpendicular to the rotation axis of the connecting rod 913. The connecting rod is located at the front or rear end of the support rod 97 so that it contacts the support rod when the handrail body is rotated to the expanded position, thus providing support. Preferably, the connecting rod is located at the front end of the support rod, and the support rod bears the force of the handrail body during use. At the same time, the upper end of the support rod 97 forms a support portion 971, which is used to contact the side wall of the connecting rod 913 and provide support for the connecting rod 913. In this embodiment, the upper end of the support rod 97 extends upward to form the support portion 971. A locking ring 96 is fitted on the connecting rod 913. The locking ring 96 can slide on the connecting rod, and when the connecting rod (handrail body) is in the expanded state, the locking ring 96 can be fitted into the support portion 971 to achieve locking and fixing between the connecting rod and the support rod. In this embodiment, the locking ring 96 is elliptical or racetrack-shaped (two U-shaped rings facing each other), and the locking ring is made of bent steel bars (steel bars).

[0077] To achieve better locking and fixation, increase the lever arm, and prevent the locking ring from getting too close to the hinge, in this embodiment, the distance L between the rotation axis of the connecting rod 913 and the side wall of the support rod 97 is greater than or equal to the radius of the connecting rod 913. This allows it to form a certain angle between the connecting rod and the support rod when unfolded. Preferably, when the connecting rod 913 contacts the support part 971 (when unfolded), the angle between the connecting rod 913 and the support part 971 is greater than or equal to 4 degrees and less than or equal to 7 degrees.

[0078] Meanwhile, on the handrail body, specifically, one or more pull rods 92 are rotatably mounted between the two second rods 912, see reference. Figure 22It is used to control different components. In this embodiment, it has two pull rods 92, one for controlling the air nozzle roller brush assembly and the other for controlling the walking mechanism. To facilitate operation and prevent interference, the pull rods have outwardly protruding actuating parts. The actuating parts on each pull rod are staggered to avoid impact during operation. The pull rods are made of bent steel pipes. The pull rods are provided with mounting holes 920 for installing steel wire ropes (brake cables). At the same time, a support plate is provided on the second rod body. The upper part has a hole for a steel wire rope to pass through, and an opening is provided on the side wall of the hole for the steel wire rope to be inserted into the hole. The outer tube of the steel wire rope contacts the support plate. When the pull rod is rotated, the inner rope of the steel wire rope is pulled to control the corresponding component. At the same time, a limiting rod 921 is provided at the end of the pull rod. The limiting rod 921 is used to contact the lower arm of the second rod 912 and to limit the rotation angle of the pull rod. A toggle switch 94 is provided on the handrail body to control the throttle opening and closing.

[0079] This handrail mechanism uses a locking ring to lock and fix the handrail, resulting in a compact structure, low manufacturing cost, ease of use, simple operation, and high strength. A support section is incorporated to increase the lever arm, enhancing the support force on the handrail body, reducing stress on the support rod during use, preventing compression deformation, improving overall structural stability, and extending service life. An angle is set between the support section and the connecting rod to control the lower limit position of the locking ring, increasing the lever arm in the opposite direction, thus improving structural stability and reliability. A pull rod is included to control other components of the blow-suction machine, making operation convenient and labor-saving.

[0080] For the nozzle roller brush assembly, please refer to [link / reference]. Figures 27-39 It is installed on the volute body of the blowing and suction mechanism, and can realize automatic and semi-automatic feeding to blow and suction snow or leaves, etc. It includes a nozzle housing 5, a roller brush 7 and a transmission component 8.

[0081] The nozzle housing 5 serves as a support and mounting carrier, connecting to the volute body. The nozzle housing 5 has a cavity (hollow cavity) formed within it, creating an air chamber 500. An opening is provided on the rear side wall of the air chamber 500, forming a discharge port 50. A first connecting part 53 is provided on the discharge port, connecting to the nozzle fixing assembly on the volute body. A strip-shaped opening is provided at the bottom of the air chamber 500, forming a first inlet 52. Specifically, the nozzle housing 5 includes a first housing with a cuboid structure. The lower end of the first housing is open, forming a long strip-shaped first inlet 52. The length direction of the first inlet 52 is perpendicular to the axis of the discharge port 50. The upper end of the first housing is curved backward and necked to form a second housing. Therefore, the nozzle housing 5 as a whole forms a T-shaped or trapezoidal structure that is wider at the lower end and narrower at the upper end. The discharge port 50 is located at the rear end of the second housing, facing backward. The discharge port 50 is configured as an inverted U-shaped structure, with its edges extending radially outward, that is, extending outward perpendicular to the axis of the discharge port 50, thus forming the first connecting part 53. Therefore, the first connecting part 53 is an inverted U-shaped structure with an overall thickness of 5mm-20mm. An annular groove is provided on the end face of the first connecting part 53, and a sealing gasket is installed in the annular groove to improve the sealing of the connection with the blower and thus improve the blowing and suction effect. In this embodiment, the included angle between the first inlet 52 and the discharge port 50 is greater than or equal to 75 degrees and less than or equal to 85 degrees, preferably 79 degrees-80 degrees. At the same time, an elastic scraper 57 is provided at the rear end of the first inlet 52. The elastic scraper 57 is made of rubber and is fixed to the rear side wall of the first housing to block leaves, snow or other debris from the ground, thereby improving the suction (cleaning) effect.

[0082] Another opening is provided on the side wall of the air cavity 500, forming a second feed inlet 51. In this embodiment, it is located between the first housing and the second housing and faces forward. A baffle is detachably installed on the first feed inlet 52, and a plug is detachably installed on the second feed inlet 51. Depending on the usage requirements, either the baffle or the plug can be installed, thereby connecting either the first or second feed inlet to the air cavity 500 to achieve different usage requirements. That is, a plug or a feed hose 6 is detachably installed on the second feed inlet 51, which can be selected according to different operating conditions. See reference. Figure 27The feed hose 6 includes a hose seat and a corrugated tube. The hose seat is cylindrical and includes a first tube body and a second tube body coaxially arranged. The diameter of the first tube body is larger than that of the second tube body. The corrugated tube is sleeved on the second tube body. A feed port 61 is provided at the end of the corrugated tube. The feed port is cylindrical and detachably sleeved on the end of the corrugated tube. The end of the feed port is beveled. At the same time, a hand grip 62 is fixed on the feed port. The hand grip is an L-shaped rod body for easy hand operation. Specifically, it includes a first rod body inclinedly connected to the feed port. The end of the first rod body is bent backward to form a second rod body. The angle between the first rod body and the feed port is 45-60 degrees, and the angle between the second rod body and the first rod body is 135-150 degrees. A rubber sleeve is provided at the root of the second rod body (near the end of the first rod body) for gripping. The end of the second rod body (away from the end of the first rod body) is also provided. The device is equipped with an arc-shaped support plate, which provides support for the elbow, making operation more convenient and effortless. When using the feed pipe, the hand holds the feed inlet to the target position, sucking in materials such as leaves and snow to clean the floor. The plug is used to seal the second feed inlet 51. The plug includes a cylindrical plug body with a sealed end. The plug body has a number of second locking holes evenly distributed on its side wall, the same number as the cylindrical protrusions. The structure of the second locking holes is the same as that of the first locking holes, so it will not be described in detail. When the plug is installed on the second feed inlet 51, the material can only enter from the lower first feed inlet. That is, when the second feed inlet is equipped with a feed pipe, the material can enter through the lower first feed inlet or through the feed pipe. When the second feed inlet is equipped with a plug, the material can only enter through the lower first feed inlet. These are suitable for different operating conditions.

[0083] A roller brush 7 is rotatably mounted on the first feed inlet 52. The axis of rotation of the roller brush 7 is parallel to the length direction of the first feed inlet 52. Bristles are provided on the side wall of the roller brush 7 to carry leaves or snow from the ground into the first feed inlet. (See reference...) Figure 32 , Figures 35-39The roller brush includes a roller brush body located inside the first feed inlet to prevent direct contact with hard objects on the ground, thus providing protection. Bristles are provided on the sidewalls of the roller brush body, extending beyond the first feed inlet during rotation. Shaft holes are passed through both ends of the roller brush body; the cross-section of these shaft holes is non-circular, but in this embodiment, it is a regular polygon, preferably a square. A main shaft, also square, is fitted inside the shaft holes to prevent radial slippage. A first connector is provided at the head of the main shaft, which connects to the connecting hole on the driven wheel of the transmission assembly for power input. A bearing is fitted at the tail of the main shaft, and the bearing is mounted on the nozzle housing 5 via a quick-release assembly. Specifically, the roller brush body includes roller brushes sequentially and alternately fitted on the main... The roller brush holder 72 on the shaft has shaft holes 720 at both ends, and the shaft holes 720 have the same cross-sectional shape as the main shaft. At least two mounting posts 722 are evenly distributed circumferentially at the front end of the roller brush holder 72. The axis of the mounting posts 722 is parallel to the axis of the shaft holes 720. A brush holder 73 is sleeved on the mounting posts 722. Brush bristles are provided on the sidewall of the brush holder 73. In this embodiment, the roller brush holder 72 includes a roller brush holder body, which is cylindrical. At least two mounting grooves 721 are evenly distributed circumferentially on the sidewall of the roller brush holder body, preferably two mounting grooves 721. The end of the mounting groove 721 extends axially forward and penetrates into the roller brush holder body. The cross-section of the mounting groove is triangular, and its two sidewalls form a triangular shape. A support surface is provided, and mounting posts 722 are set on the bottom surface of mounting groove 721. The cross-section of brush seat 73 is the same as the cross-sectional shape of mounting groove 721. Holes are provided at both ends of brush seat 73 to allow mounting posts 722 to pass through. Brush seat 73 is fitted onto mounting posts in mounting groove. The sidewall of brush seat 73 fits against the first support surface to achieve radial positioning installation. Brush bristles are provided on the sidewall of brush seat. A mounting hole 723 is provided at the rear end of roller brush seat 72 to allow the mounting post 722 on the rear roller brush seat 72 to be inserted, thereby achieving connection. The mounting hole 723 and mounting post 722 are staggered. In this embodiment, there are two mounting posts and two mounting holes, and the phase difference between the two is 90 degrees. After assembly, the phase difference between two adjacent roller brush seats is 90 degrees; it also includes a front cover 71, which is located at the front end of the roller brush seat 72 at the front end and can cover the brush seat. Specifically, the front cover 71 includes a circular front cover body, with a shaft hole 710 for the main shaft to pass through in the center of the front cover body. The edge of the shaft hole extends axially to form a fifth connecting part 711, and a pin hole 712 is provided on the fifth connecting part. The axis of the pin hole 712 is perpendicular to and intersects the axis of the shaft hole for fixing the main shaft. A pin is provided between the front cover body and the main shaft; a fixing sleeve is provided on the roller brush seat at the end. The fixing sleeve has a rectangular cross-section and a pin hole is also provided on the fixing sleeve.During assembly, the roller brush bodies are sequentially fitted onto the main shaft, with the included angle between two adjacent roller brush bodies being 90 degrees. The mounting posts on the roller brush bodies can be fitted into the mounting holes on the adjacent roller brush bodies to achieve interconnection and prevent misassembly. Then, the front cover and fixing sleeve are installed at both ends, and pins are inserted to complete the overall assembly. It can assemble roller brushes of different lengths according to different usage requirements. The overall assembly is convenient and labor-saving. The modular structure eliminates the need for multiple sets of molds, greatly reducing production costs.

[0084] Meanwhile, depending on different usage requirements, the air nozzle roller brush assembly at the feed inlet can be replaced with an air nozzle roller cutter assembly. (See reference...) Figure 31 The overall structure of the air nozzle roller cutter assembly is the same as that of the air nozzle roller brush assembly. The difference is that the front and lower ends of its housing are open to allow ice and other substances to enter. In addition, the air nozzle roller brush assembly is equipped with a roller brush, while the air nozzle roller cutter assembly is equipped with a roller cutter 58, which includes a main shaft and multiple spiral blades set on the side wall of the main shaft, for cleaning ice and snow on the road surface.

[0085] See Figure 34 The quick-installation assembly includes a mounting base 75, which is installed inside the nozzle housing 5 by bolts (screws). A semi-circular first mounting groove is formed on the mounting base. At the same time, a pressure block 76 is hinged to one end of the mounting base. A semi-circular second mounting groove is formed on the pressure block 76. A bearing mounting groove for installing a bearing is formed between the first mounting groove and the second mounting groove. A locking block 77 is hinged to the other end of the mounting base. A protrusion is provided on the locking block to form a first locking buckle 771. At the same time, a protrusion is also provided on the pressure block to form a second locking buckle 761. A torsion spring is provided on the locking block. The torsion spring causes the first locking buckle on the locking block 77 to tend to move towards the second locking buckle and press the first locking buckle against the second locking buckle, realizing the quick installation of the bearing (brush). The lever arm of the first locking buckle is smaller than that of the second locking buckle, and its locking force is large, reliable and stable.

[0086] The transmission assembly 8 is mounted on the side wall of the nozzle housing 5. The output end of the transmission assembly 8 is connected to the roller brush 7 to drive its rotation. The input end of the transmission assembly 8 is connected to the output shaft of the blow-dryer as the power input. (See also...) Figures 32-33The transmission assembly 8 includes a housing 85, a driving wheel, and a driven wheel 86. The housing 85 is fixed to the side wall of the nozzle housing 5. In this embodiment, the housing 85 has a rectangular structure with semi-circular ends. It is fixed to the end of the first housing, and one end is inclined upwards. The driving wheel and the driven wheel 86 are parallel to each other and rotatably mounted inside the housing 85. The driven wheel 86 is connected to the driving wheel by a belt 81. The driven wheel 86 is connected to the roller brush 7. A concave hole is formed at the center of the end of the driven wheel 86, which forms a connection hole. The cross-section has the same shape as the main shaft, allowing the end of the main shaft to be inserted and enabling quick assembly. A third connecting part is provided on the drive wheel for connection to the power output shaft of the blow-suction machine; this third connecting part is a shaft hole opened at the center of the drive wheel. The diameter of the drive wheel is larger than the diameter of the driven wheel. In this embodiment, a controllable tensioning assembly is also provided within the transmission assembly 8 to control the roller brush 7. Specifically, the controllable tensioning assembly includes a support frame 82 and a tensioning wheel 83, with the support frame 82 rotatably mounted within the housing 85. Furthermore, the rotation axis of the support frame 82 is parallel to the rotation axis of the drive wheel. The tension wheel 83 is rotatably mounted on the head of the support frame 82, and its rotation axis is parallel to that of the support frame 82. Simultaneously, an elastic component is provided within the housing, which causes the head of the support frame 82 to tend to move closer to the belt 81, and causes the tension wheel 83 to press against the belt 81, achieving tension. The tail of the support frame 82 extends outside the housing, and a pull cable is provided at the tail of the support frame 82 for pulling the support frame. Rotation causes the tensioner pulley to disengage from the belt, thus depriving the belt of tension and transmission power, achieving the clutch function. In this embodiment, the support frame is an L-shaped metal sheet with a compact structure, small installation space, and low manufacturing cost. The aforementioned pull cable is a brake cable. The support frame is installed at the lower end inside the housing. At the same time, a limiting block 84 is also provided at the lower end of the housing. A wire hole is opened on the limiting block to allow the inner wire of the brake cable to pass through, thereby realizing the operation of the support frame. The brake cable is connected to a pull rod on the handrail mechanism to realize clutch control.

[0087] The nozzle roller brush assembly features a compact, T-shaped or trapezoidal nozzle housing with minimal installation space, while simultaneously increasing the width of the bottom feed inlet, thus improving feeding efficiency. The overall 75-85 degree arc shape of the nozzle housing creates a 5-15 degree angle between the lower feed inlet and the ground, enhancing feeding reliability. A roller brush assists in feeding; combined with an elastic scraper at the rear of the brush, it guides material into the air chamber as the brush rotates, resulting in high feeding efficiency and effectiveness. The roller brush is installed on the nozzle housing via a quick-release assembly, making installation and removal convenient and labor-saving, facilitating maintenance, upkeep, and replacement. The modular structure of the roller brush ensures easy assembly, high connection strength, and the ability to assemble roller brushes of different lengths to meet various needs, significantly reducing production costs and broadening its applicability. It is also easy to assemble and use. Routine maintenance is required. The roller brush adopts an interlaced structure, which further improves feeding efficiency and reliability. A second feed port is provided, allowing for the installation of plugs or feed pipes as needed to meet different operating conditions. The feed port uses a quick-connect interface, enabling rapid installation and fixing of components without tools, with high installation strength and reliability. A controllable tensioning component is provided to automatically tension the belt, and a pull cable can be used to de-tension the tensioning wheel, achieving quick disengagement between the belt and the roller brush, meeting different operating conditions. Its structure is compact, requires little installation space, is simple to operate, and has low cost. A handheld part and an arc-shaped support plate are provided on the feed pipe, which can support the feed pipe with the elbow, making operation easier and preventing the feed pipe from swinging, thus improving operational reliability.

[0088] This invention relates to a multi-functional blower / vacuum cleaner with a compact structure and easy assembly. It can perform snow blowing, snow and twig cleaning, or other ground cleaning operations, offering diverse functions and a wide range of applications. It features a walking mechanism for automatic movement, reducing operational effort. All components are detachable, facilitating quick and easy assembly and transportation. The foldable handle design minimizes space occupation when not in use. The snap-fit ​​structure allows for quick replacement of plugs or feed pipes to meet various usage requirements.

[0089] The above description is only a preferred embodiment of the present invention. It should be noted that for those skilled in the art, several improvements and modifications can be made without departing from the technical principles of the present invention, and these improvements and modifications should also be considered within the scope of protection of the present invention.

Claims

1. A multi-functional blow-and-suction machine, characterized in that, include: The vehicle frame serves as a support and mounting carrier, and the vehicle frame is equipped with a power mechanism and a running mechanism. A blowing and suction mechanism, mounted on the frame, is used to suck up materials and discharge them from the outlet end. The blowing and suction mechanism is equipped with a crushing component. A handrail mechanism is installed at the end of the frame for hand gripping to control the direction of travel of the frame; The blowing and suction mechanism includes a volute body, an impeller rotatably mounted inside the volute body, a cutter at the rear end of the impeller, a feed pipe at the rear end face of the volute body, and an outlet end of the feed pipe located on the rotation path of the cutter. During the rotation of the impeller, the cutter can crush the material fed in from the feed pipe. The front end face of the volute body has an inlet for air intake or material intake, and the side wall of the volute body has a discharge port for material discharge. The volute body contains a stirring cage for crushing materials. The stirring cage is arc-shaped and located between the impeller and the discharge port, and at the outer edge of the impeller. The stirring cage includes an arc-shaped fixed tooth plate, which is coaxial with the impeller. There are at least two fixed tooth plates, which are arranged parallel to each other along the axis of the impeller. There is a gap between two adjacent fixed tooth plates to form a crushing zone. The edge of the impeller is provided with a moving tooth plate. The crushing zone is located on the movement path of the moving tooth plate, and further crushing can be achieved between the moving tooth plate and the fixed tooth plate.

2. The multifunctional blow-and-suction machine as described in claim 1, characterized in that: The inlet is detachably equipped with a nozzle roller brush assembly or a nozzle roller cutter assembly. The lower end of the nozzle roller brush assembly is provided with a first feed port, on which a roller brush is rotatably mounted. The side wall of the nozzle roller brush assembly is provided with a second feed port. The first feed port and the second feed port are respectively detachably equipped with baffles and plugs, and one of the first feed port or the second feed port can be connected to the inlet. The lower end and the front end of the nozzle roller cutter assembly are open for feeding, and a roller cutter is rotatably mounted inside the nozzle roller cutter assembly.

3. The multifunctional blow-and-suction machine as described in claim 1, characterized in that: The arc-shaped sidewall of the volute body includes a first arc-shaped surface, a second arc-shaped surface, a third arc-shaped surface, and a fourth arc-shaped surface connected in sequence. The discharge port is located between the first arc-shaped surface and the fourth arc-shaped surface. The centers of the first arc-shaped surface, the second arc-shaped surface, the third arc-shaped surface, and the fourth arc-shaped surface form a rectangular structure. The axis of the impeller is coaxial with the second arc-shaped surface.

4. The multifunctional blow-and-suction machine as described in claim 2, characterized in that: The nozzle roller brush assembly includes a nozzle housing and a transmission assembly. The nozzle housing has an air cavity formed inside, and the rear side wall of the air cavity has a discharge port that is connected to the inlet end of the blowing and suction mechanism. The bottom of the air cavity has a strip-shaped first inlet. The transmission assembly is installed on the side wall of the nozzle housing. The output end of the transmission assembly is connected to the roller brush and is used to drive the roller brush to rotate. The input end of the transmission assembly is connected to the power mechanism.

5. The multifunctional blow-and-suction machine as described in claim 2, characterized in that: The roller brush includes a roller brush body and a main shaft sleeved on the roller brush body. The roller brush body includes roller brush seats that are alternately sleeved on the main shaft. At least two mounting posts are evenly distributed around the front end of the roller brush seats. A brush seat is sleeved on the mounting post. The side wall of the brush seat is provided with bristles. The rear end of the roller brush seat is provided with a mounting hole that allows the mounting post on the rear roller brush seat to be inserted and connected. The mounting hole and the mounting post are alternately arranged.

6. The multifunctional blow-and-suction machine as described in claim 4, characterized in that: The transmission assembly includes a housing fixed to the side wall of the nozzle housing, a drive wheel and a driven wheel rotatably mounted inside the housing, the driven wheel and the drive wheel being connected by a belt, the driven wheel being connected to the roller brush, and the drive wheel being provided with a third connecting part for connecting to a power mechanism; the belt is provided with a controllable tensioning assembly, which can control the tension of the belt to achieve engagement and disengagement between the drive wheel and the driven wheel.

7. The multifunctional blow-and-suction machine as described in claim 2, characterized in that: The height of the nozzle roller brush assembly or nozzle roller cutter assembly is adjustable.

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