CN111727821A

CN111727821A - Grass raker

Info

Publication number: CN111727821A
Application number: CN202010518001.0A
Authority: CN
Inventors: 卢茂龙; 李进威; 汪李明; 田琨
Original assignee: Zhejiang YAT Electrical Appliance Co Ltd
Current assignee: Zhejiang YAT Electrical Appliance Co Ltd
Priority date: 2020-06-09
Filing date: 2020-06-09
Publication date: 2020-10-02

Abstract

The invention discloses a grass raker, which belongs to the field of garden process equipment, reduces the noise of a motor and enhances the grass collecting capability, and comprises a chassis, the motor arranged in the chassis, a grass raking head driven by the motor and a grass collecting bag for collecting grass, wherein an air outlet pipe is connected at an opening of the motor, a silencing cavity is arranged on the chassis, the silencing cavity is provided with an air inlet and an air outlet, the air outlet pipe is communicated with the air inlet, and the air outlet faces to an inlet of the grass collecting bag so as to introduce air flowing out from the opening of the motor into the grass collecting bag. The motor produces air current and noise can enter into the amortization intracavity along blowing the pipe when rotating, and the noise is reduced, and the air current outflow can blow to grass collection bag, has improved grass collection ability. The embodiment of the invention can be applied to products such as mowers, harvesters and the like.

Description

Grass raker

[ technical field ] A method for producing a semiconductor device

The invention relates to the field of garden process equipment, in particular to a grass raking machine.

[ background of the invention ]

Dead grass and weeds in lawn bottom need regularly use the grass raker to comb, and the machine use in-process motor can produce a certain wind and make an uproar, and the higher rotational speed of motor design usually for reduce cost, the noise reduction method adopts usually: the packaging of the sound insulation material or the reduction of the rotating speed of the motor is realized, but part of the motor efficiency is lost, and the cost of the whole machine is increased; meanwhile, the grass raking machine on the market generally has the problem of low grass collecting efficiency.

[ summary of the invention ]

The invention aims to overcome the defects of the prior art and provide a grass raking machine which can reduce the noise of a motor and enhance the grass collecting capability.

In order to solve the technical problems, the invention adopts the following technical scheme:

the utility model provides a grass raker, includes the chassis, sets up motor in the chassis, by motor drive's grass raking head and the grass collection bag that is used for album grass, the opening part of motor is connected with the air-out pipe, be equipped with the amortization chamber on the chassis, the amortization chamber has air intake and air outlet, the air-out pipe with the air intake intercommunication, the air outlet orientation the entry of grass collection bag to introduce the wind that the motor opening part flows in the grass collection bag. The grass raking machine is internally provided with the silencing cavity, air flow and noise generated by the motor during rotation can enter the silencing cavity along the blowing pipe, and the noise is reduced in the silencing cavity, so that the noise transmitted to the outside is much smaller, and the purpose of reducing the noise is achieved; in addition, the motor can generate a large amount of heat in the rotating process, and the heat can also be dissipated along with the airflow, so that the temperature of the motor is reduced, and the heat dissipation of the motor is ensured; the amortization chamber has only an entry and an export, and the air current can only flow from the air outlet after entering into the amortization intracavity through the air intake, and the air current blows to album grass bag entry, can blow the weeds of piling up at album grass bag entrance to the depths of album grass bag, avoids album grass bag entrance weeds to pile up, has improved album grass ability.

Further, the sound-deadening chamber is enclosed by sound-insulating boards. The sound insulation board has a good noise reduction effect, and the noise reduction capability of the noise reduction cavity is enhanced.

Furthermore, the inner wall of the sound-deadening cavity and/or the outer surface of the sound-deadening plate and/or the periphery of the motor is/are provided with sound-deadening cotton. The silencing cotton has the capability of absorbing noise, and when the silencing cotton is arranged on the periphery of the motor, the noise emitted to the periphery by the motor is reduced, so that the generated noise is lower after the silencing effect of the silencing cavity; the noise reduction cotton arranged on the inner wall of the noise reduction cavity and the outer surface of the sound insulation board can enhance the noise reduction capability of the noise reduction cavity.

Furthermore, a plurality of air guide ribs are arranged on the inner wall of the silencing cavity. The air guide ribs can guide the flow direction of the air flow, so that the air flow entering the silencing cavity can flow along the guide of the air guide ribs, the loss generated by impact of the air flow and the inner wall of the silencing cavity is reduced, the air flow can be better utilized, and the grass collecting capacity is improved.

Furthermore, the multiple air guide ribs and the inner wall of the silencing cavity are integrally formed, and two side faces of each air guide rib are convex cambered surfaces. The material of wind-guiding muscle is unanimous with the amortization chamber, can be with the in-process of air current contact, noise absorbing, the ability of making an uproar falls in reinforcing amortization chamber to the convex arc face on the wind-guiding muscle can increase the air current velocity of flow through the wind-guiding muscle surface, thereby improves the velocity of flow of air current after the air outlet flows, so can strengthen the intensity of sweeping weeds, improve the grass collection ability.

Furthermore, the air outlet is provided with a plurality of air outlets and arranged at intervals along the length direction of the grass raking head, and the length of the sound attenuation cavity, the length of the grass raking head and the length of the inlet of the grass collecting bag are matched. The grass raking head rotates the in-process, can send into the entrance of collection grass bag with weeds, and the length of grass raking head matches with the entry length of collection grass bag to guarantee that collection grass bag can collect the weeds that the grass raking head was thrown away, the air current of a plurality of air outlets can cover the entry of whole collection grass bag, in order to improve collection grass ability, if change a plurality of air outlets into the notch that the entry length of one length and collection grass bag matches, then can reduce the velocity of flow of air current.

Further, the silencing cavity is located among the grass collecting bag, the motor and the grass raking head. The position between noise elimination chamber and the collection grass bag is nearer, can reduce the air current and blow to the loss of the in-process of collection grass bag, and the grass raking head also can produce the noise at the operation in-process, and some noises can pass the noise elimination chamber, obtains cutting down, also has some noises and can transmit motor department to the air current that produces along with the motor spreads into the noise elimination intracavity and obtains cutting down.

Further, the grass raking head includes the back shaft, the back shaft periphery sets up the multichannel skeleton along length direction interval, the multichannel skeleton is used for installing the harrow sword, is in on the skeleton the last twice side of back shaft length direction is the sector face. Under the drive of motor, back shaft and multichannel skeleton can rotate, and at the rotation in-process, the harrow sword can be thrown into the grass bag with subaerial weeds in, and the side of skeleton is the fan-shaped face, can produce great wind-force at the rotation in-process, can increase the distance that weeds were thrown away to reduce the piling up of weeds at the grass bag entrance.

Furthermore, a concave arc surface for connecting the two fan-shaped surfaces is arranged between every two adjacent frameworks. When the air current contacts the concave cambered surface along the fan-shaped surface, the air current can continuously flow to the fan-shaped surface on the other framework along the concave cambered surface, so that the loss of the air current in the flowing process can be reduced, and the wind power generated by the grass raking head is improved to enhance the grass collecting capability.

Furthermore, be equipped with in the grass collection bag and collect the grass chamber, the diapire in grass collection chamber is the inclined plane structure, the diapire height in grass collection chamber is to keeping away from the direction of harrow grass head reduces gradually. When weeds are thrown into the grass collecting cavity, the weeds which are piled up continuously move towards the inside of the grass collecting cavity under the action of gravity or because of instability, so that the problem that the weeds are piled up at the inlet of the grass collecting bag is solved.

These features and advantages of the present invention will be disclosed in more detail in the following detailed description and the accompanying drawings.

[ description of the drawings ]

The invention is further described below with reference to the accompanying drawings:

FIG. 1 is a schematic structural view of a grass raker according to an embodiment of the present invention;

FIG. 2 is a cross-sectional view A of a grass rake in an embodiment of the present invention;

FIG. 3 is a schematic view of a rake head according to an embodiment of the present invention;

FIG. 4 is a cross-sectional view B of a grass rake in an embodiment of the present invention;

FIG. 5 is a cross-sectional view C of a grass rake in an embodiment of the present invention;

fig. 6 is a cross-sectional view D of a grass raker in an embodiment of the present invention.

Reference numerals:

the air conditioner comprises a chassis 100, an air outlet guide pipe 110, a silencing cavity 120, an air inlet 121, an air outlet 122, silencing cotton 130 and air guide ribs 140;

a motor 200;

a grass raking head 300, a supporting shaft 310, a framework 320, a raking blade 330, a fan-shaped surface 340 and a concave arc surface 350;

grass collecting bag 400 and grass collecting cavity 410.

[ detailed description ] embodiments

The technical solutions of the embodiments of the present invention are explained and illustrated below with reference to the drawings of the embodiments of the present invention, but the following embodiments are only preferred embodiments of the present invention, and not all embodiments. Based on the embodiments in the implementation, other embodiments obtained by those skilled in the art without any creative effort belong to the protection scope of the present invention.

In the description of the present invention, it is to be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "clockwise", "counterclockwise", and the like, indicate orientations and positional relationships based on those shown in the drawings, and are used only for convenience of description and simplicity of description, and do not indicate or imply that the device or element being referred to must have a particular orientation, be constructed and operated in a particular orientation, and thus, are not to be considered as limiting the present invention.

Furthermore, the terms "first", "second" and "first" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include one or more of that feature. In the description of the present invention, unless otherwise specified, "a plurality" means two or more unless explicitly defined otherwise.

In the present invention, unless otherwise expressly specified or limited, the terms "mounted," "connected," "secured," and the like are to be construed broadly and can, for example, be fixedly connected, detachably connected, or integrally connected; can be mechanically or electrically connected; they may be connected directly or indirectly through intervening media, or they may be interconnected between two elements. The specific meanings of the above terms in the present invention can be understood by those skilled in the art according to specific situations.

In the present invention, unless otherwise expressly stated or limited, "above" or "below" a first feature means that the first and second features are in direct contact, or that the first and second features are not in direct contact but are in contact with each other via another feature therebetween. Also, the first feature being "on," "above" and "over" the second feature includes the first feature being directly on and obliquely above the second feature, or merely indicating that the first feature is at a higher level than the second feature. A first feature being "under," "below," and "beneath" a second feature includes the first feature being directly under and obliquely below the second feature, or simply meaning that the first feature is at a lesser elevation than the second feature.

Referring to fig. 1 to 3, the present embodiment provides a grass raking machine, including a chassis 100, a motor 200 disposed in the chassis 100, a grass raking head 300 driven by the motor 200, and a grass collecting bag 400 for collecting grass, an air outlet duct 110 is connected to an opening of the motor 200, a sound deadening chamber 120 is disposed on the chassis 100, the sound deadening chamber 120 has an air inlet 121 and an air outlet 122, the air outlet duct 110 is communicated with the air inlet 121, and the air outlet 122 faces an inlet of the grass collecting bag 400, so as to introduce air flowing out from the opening of the motor 200 into the grass collecting bag 400.

The grass raker is used for collecting weeds cut by the grass mower into the grass collecting bag 400, the grass raking head 300 is driven by the motor 200, the motor 200 can generate large noise in the rotating process and can influence the surrounding environment, in the embodiment, the noise of the motor 200 is weakened by arranging the silencing cavity 120 on the chassis 100, airflow and noise generated by the motor 200 in the rotating process can enter the silencing cavity 120 along the blowing pipe, the noise is reduced in the silencing cavity 120, and thus the noise transmitted to the outside is much smaller, so that the purpose of reducing the noise is realized.

Different from the mode that adopts the acoustic celotex board to surround motor 200 in order to reduce the noise of motor among the prior art, noise reduction treatment is introduced into amortization chamber 120 with the noise to this embodiment, and the air current can also take away the heat that motor 200 produced at the rotation in-process, has still reduced the temperature of motor 200 when weakening the motor 200 noise, and the heat dissipation of motor 200 has obtained the assurance, and the scheme among the prior art, although can weaken the noise, the heat dissipation problem of motor can't be solved.

In fig. 2, the arrow between the grass raking head 300 and the grass collecting bag 400 is the flow direction of the airflow generated when the grass raking head 300 rotates, and the arrow between the sound deadening chamber 120 and the grass collecting bag 400 is the flow direction of the airflow generated by the rotation of the motor 200 after flowing out from the sound deadening chamber 120.

In addition, the amortization chamber 120 only has an entry and an export, and the air current only can flow out from air outlet 122 after entering the amortization chamber 120 through air intake 121, and the air current blows to grass collection bag 400 entry, can blow the depths to grass collection bag 400 with piling up the weeds that gather at grass collection bag 400 entry, avoids grass collection bag 400 entry weeds to pile up, has improved the grass collection ability.

In order to improve the noise reduction capability of the sound-deadening chamber 120, the sound-deadening chamber 120 is surrounded by sound-deadening plates, and the sound-deadening plates themselves have a better noise reduction effect, so that the noise reduction capability of the sound-deadening chamber 120 surrounded by the sound-deadening plates can be further enhanced.

In the rotation process of the grass raking head 300, weeds can be sent to the inlet of the grass collecting bag 400, the length of the grass raking head 300 needs to be matched with the length of the inlet of the grass collecting bag 400 so as to ensure that the grass collecting bag 400 can collect the weeds thrown out by the grass raking head 300, the length of the silencing cavity 120 needs to be matched with the length of the inlet of the grass collecting bag 400, the air outlets 122 are provided with a plurality of air outlets 122 and arranged along the length of the silencing cavity 120, and the intervals among the air outlets 122 are close, so that the air flow of the air outlets 122 can cover the whole inlet of the grass collecting bag 400 so as to improve the grass collecting capacity; if the plurality of air outlets 122 are changed to be a slot with a length matching the length of the inlet of the grass-collecting bag 400, the flow rate of the air flow is reduced.

The grass raking head 300 comprises a supporting shaft 310, three frameworks 320 are arranged on the periphery of the supporting shaft 310, the frameworks 320 are used for mounting raking blades 330, the frameworks 320 are distributed in the length direction of the supporting shaft 310, and the intervals among the three frameworks 320 are the same, so that the supporting shaft 310 and the three frameworks 320 can rotate under the driving of the motor 200, and the raking blades 330 can throw weeds on the ground into the grass collecting bag 400 in the rotating process;

meanwhile, in the rotating process, the protruded frameworks 320 can generate air flow for pushing weeds, in order to increase wind power, two side surfaces of the frameworks 320 in the length direction of the supporting shaft 310 are fan-shaped surfaces 340, the supporting shaft 310 is also provided with concave arc surfaces 350, the concave arc surfaces 350 are used for connecting the fan-shaped surfaces 340 of two adjacent frameworks 320, and the side surfaces of the frameworks 320 are the fan-shaped surfaces 340, so that high wind power can be generated in the rotating process, after the air flow contacts the concave arc surfaces 350 along the fan-shaped surfaces 340, the air flow can continuously flow to the fan-shaped surface 340 of the other framework 320 along the concave arc surfaces 350, the loss of the air flow in the flowing process can be reduced, the wind power generated by the grass raking head 300 is improved to enhance the grass collecting capability, the distance for the weeds to be swung is increased, and the accumulation of the weeds at the inlets of.

Based on the above embodiments, in order to enhance the noise reduction capability of the sound attenuation chamber, referring to fig. 4, in an embodiment of the present invention, a sound attenuation cotton 130 is disposed in the sound attenuation chamber 120, the sound attenuation cotton 130 is attached to the inner wall of the sound attenuation chamber 120, and when the airflow flows into the sound attenuation chamber 120, the airflow can contact with the sound attenuation cotton 130, so that the noise in the transmission process can be reduced, and the noise transmitted to the outside can be greatly reduced by reducing the noise through the sound attenuation chamber 120. In addition, the periphery of the motor can be provided with silencing cotton, when the silencing cotton is arranged on the periphery of the motor, the noise emitted to the periphery by the motor is reduced, and thus, the generated noise is lower after the silencing effect of the silencing cavity; the noise reduction cotton can also be arranged on the outer surface of the sound insulation board to further improve the noise reduction effect.

Referring to fig. 4, in the process of flowing of the airflow in the muffling cavity 120, the airflow may contact with the inner wall of the muffling cavity 120 to generate impact, so as to reduce the speed of the airflow and reduce the flow rate of the airflow, and referring to fig. 5, in an embodiment of the present invention, a plurality of air guiding ribs 140 are disposed on the inner wall of the muffling cavity 120, and the air guiding ribs 140 can guide the flow direction of the airflow, so that the airflow entering the muffling cavity 120 can flow along the guiding of the air guiding ribs 140, thereby reducing the loss generated by the impact of the airflow with the inner wall of the muffling cavity 120, better utilizing the airflow, and improving the grass collecting capability.

The air guiding ribs 140 can be integrally formed with the inner wall of the silencing cavity 120, so that the air guiding ribs 140 and the inner wall of the silencing cavity 120 are made of sound insulation boards as same materials, and noise can be further reduced in the process that air flow contacts with the air guiding ribs 140, so that the noise reduction capability of the silencing cavity 120 is improved; the convex arc surface is established to the twice side of air guide rib 140, and the convex arc surface on the air guide rib 140 can increase the air current velocity of process air guide rib 140 surface to improve the velocity of flow from air outlet 122 outflow back air current, so can strengthen the intensity of sweeping weeds, improve the ability of gathering grass.

Based on the above embodiments, in order to further enhance the grass collecting capability of the grass raking machine, referring to fig. 6, in an embodiment of the present invention, the inner wall of the grass collecting cavity 410 in the grass collecting bag 400 is set to be a slope structure, the height of the bottom wall of the grass collecting cavity 410 is gradually reduced toward the direction away from the grass raking head 300, when weeds are thrown into the grass collecting cavity 410, the weeds which are continuously piled move toward the interior of the grass collecting cavity 410 under the action of gravity or because of instability, so as to improve the problem that the weeds are piled at the inlet of the grass collecting bag 400.

Based on the above embodiments, referring to fig. 2, 4, 5 and 6, in this embodiment, the position of the sound-deadening chamber 120 is specifically described, the sound-deadening chamber 120 is disposed between the grass-collecting bag 400, the motor 200 and the grass-raking head 300, and the position between the sound-deadening chamber 120 and the grass-collecting bag 400 is closer, so that the loss of the air flow blowing to the grass-collecting bag 400 can be reduced, the grass-raking head 300 can also generate noise during operation, part of the noise can pass through the sound-deadening chamber 120 to be reduced, and part of the noise can be transmitted to the motor 200 and can be reduced along with the air flow generated by the motor 200 entering the sound-deadening chamber 120.

The embodiment of the invention can be applied to products such as mowers, harvesters and the like.

While the invention has been described with reference to specific embodiments thereof, it will be understood by those skilled in the art that the invention is not limited thereto, and may be embodied in many different forms without departing from the spirit and scope of the invention as set forth in the following claims. Any modification which does not depart from the functional and structural principles of the present invention is intended to be included within the scope of the claims.

Claims

1. A grass raker comprises a chassis, a motor arranged in the chassis, a grass raking head driven by the motor and a grass collecting bag used for collecting grass, and is characterized in that: the opening part of the motor is connected with an air outlet guide pipe, the chassis is provided with a silencing cavity, the silencing cavity is provided with an air inlet and an air outlet, the air outlet guide pipe is communicated with the air inlet, and the air outlet faces to the inlet of the grass collecting bag so as to introduce air flowing out from the opening part of the motor into the grass collecting bag.

2. A grass raker as claimed in claim 1, wherein: the sound-deadening chamber is surrounded by sound-deadening plates.

3. A grass raker as claimed in claim 2, wherein: and silencing cotton is arranged on the inner wall of the silencing cavity and/or the outer surface of the sound insulation board and/or the periphery of the motor.

4. A grass raker as claimed in claim 2, wherein: and a plurality of air guide ribs are arranged on the inner wall of the silencing cavity.

5. A grass raker as claimed in claim 4, wherein: the multi-channel air guide ribs and the inner wall of the silencing cavity are integrally formed, and two side faces of each air guide rib are convex cambered surfaces.

6. A grass raker as claimed in any one of claims 1 to 5, wherein: the air outlet is equipped with a plurality ofly and follows harrow grass head length direction interval sets up, the length in amortization chamber the length of harrow grass head with the entry length of collection grass bag matches.

7. A grass raker as claimed in any one of claims 1 to 5, wherein: the sound attenuation cavity is positioned among the grass collecting bag, the motor and the grass raking head.

8. A grass raker as claimed in any one of claims 1 to 5, wherein: the grass raking head comprises a supporting shaft, a plurality of skeletons are arranged on the periphery of the supporting shaft at intervals along the length direction, the skeletons are used for installing raking knives and are arranged on the skeletons, and two side surfaces on the length direction of the supporting shaft are sector surfaces.

9. A grass raker as claimed in claim 8, wherein: and a concave cambered surface for connecting the two fan-shaped surfaces is arranged between every two adjacent frameworks.

10. A grass raker as claimed in any one of claims 1 to 5, wherein: the grass collecting bag is internally provided with a grass collecting cavity, the bottom wall of the grass collecting cavity is of an inclined plane structure, and the height of the bottom wall of the grass collecting cavity is gradually reduced towards the direction away from the grass raking head.