CN220457937U - Centrifugal grass mowing head - Google Patents

Abstract

The utility model discloses a centrifugal grass cutting head, which comprises a rotary table, a grass cutting blade, a rotating shaft piece and a cutter handle, wherein the grass cutting blade is rotatably arranged at a position, close to the edge of the rotary table, of the rotary table; the circumference of the rotating shaft piece is provided with a circle of rotating groove, the width of the communicating part of the quick assembly hole and the rotating shaft hole is larger than that of the rotating shaft piece at the rotating groove, and the part of the grass cutting blade provided with the rotating shaft hole is rotatably arranged on the rotating groove of the rotating shaft piece. Through improving the structure of the epaxial grass cutting blade of beating grass for the fast-assembling hole, the pivot hole at the handle of a knife position of grass cutting blade form a big or small calabash hole design, rely on the fast-assembling hole to overlap earlier on pivot spare when installing grass cutting blade, transversely pull the blade again with the rotation groove position extrusion of pivot spare in the pivot hole, accomplish the installation of grass cutting blade, the carousel rotates and throws away the difficult release of blade outwards under centrifugal force effect during the use, and the dismouting of grass cutting blade after the improvement is more efficient, does not need to rely on extra fastener and appurtenance.

Description

Centrifugal grass mowing head

Technical Field

The utility model relates to the technical field of garden tools of grass cutters, in particular to a centrifugal grass cutting head.

Background

Grass cutters are widely used for lawn mowing as a garden tool. The front end of the grass trimmer is provided with a grass trimmer, and when the grass trimmer is started to work, the grass trimmer is controlled by a driving motor to rotate at a high speed, so that a grass trimmer rope or a grass trimmer blade arranged on the grass trimmer is driven to centrifugally rotate to realize a grass trimming function.

Because the grass blades on the grass cutting head are easily worn during use, they often need to be replaced. In the prior art, the grass cutting blade is complex to assemble on the grass cutting head, most of grass cutting blades need to be matched with a fastener and an auxiliary tool to operate, and the assembly and disassembly are inconvenient and the efficiency is low.

Disclosure of Invention

The utility model aims to solve at least one of the technical problems in the related art to a certain extent, and in view of the problems, the utility model provides a centrifugal grass cutting head which comprises a rotary table and a grass cutting blade, wherein the grass cutting blade is rotatably arranged at a position, close to the edge of the rotary table, and further comprises a rotating shaft piece arranged on the rotary table; the grass cutting blade is characterized in that a circle of rotating groove is formed in the circumference of the rotating shaft piece, the width of the communicating part of the quick assembly hole and the rotating shaft hole is larger than that of the rotating shaft piece at the position of the rotating groove, and the part of the grass cutting blade provided with the rotating shaft hole is rotatably arranged on the rotating groove of the rotating shaft piece.

Compared with the prior art, the technical scheme of the utility model has the following advantages: through improving the structure of the epaxial grass cutting blade of beating grass for the fast-assembling hole, the pivot hole at the handle of a knife position of grass cutting blade form a big or small calabash hole design, rely on the fast-assembling hole to overlap earlier on pivot spare when installing grass cutting blade, transversely pull the blade again with the rotation groove position extrusion of pivot spare in the pivot hole, accomplish the installation of grass cutting blade, the carousel rotates and throws away the difficult release of blade outwards under centrifugal force effect during the use, and the dismouting of grass cutting blade after the improvement is more efficient, does not need to rely on extra fastener and appurtenance.

Further, a limiting stop bar protruding out of the top surface of the rotary table is arranged along the edge of the rotary table, and the limiting stop bar is higher than the rotation plane of the grass cutting blade and used for limiting the rotation angle of the grass cutting blade.

Further, two groups of grass cutting blades and matched rotating shaft parts are oppositely arranged on the rotary table, two limiting barrier strips are oppositely arranged on the rotary table, and the grass cutting blades are arranged between the two limiting barrier strips.

Further, the lower end of the rotating shaft piece is provided with a plug-in post, the rotating disc is provided with a plug-in hole which penetrates through and is matched with the plug-in post in shape, and the plug-in post is fixed on the plug-in hole.

Further, the grass mowing machine also comprises a blade wheel disc coaxially fixed with the rotary disc, wherein the blade wheel disc is fixed on one side of the rotary disc, which is away from the grass mowing blade, and a plurality of evenly distributed radiating blades are arranged on one side of the blade wheel disc, which is away from the rotary disc.

Further, the middle part of one side of carousel that deviates from grass cutting blade is equipped with the draw-in groove, the middle part coaxial being provided with the axle sleeve in blade rim plate, the bottom downwardly extending of axle sleeve and chucking are in the draw-in groove.

Further, the motor shaft sleeve further comprises a connecting shaft piece fixed in the shaft sleeve, and a connecting shaft hole for being directly connected with a motor shaft of the driving motor is arranged on the central axis of the connecting shaft piece.

Additional aspects and advantages of the utility model will be set forth in part in the description which follows, and in part will be obvious from the description, or may be learned by practice of the utility model.

Drawings

In order to more clearly illustrate the technical solutions of the embodiments of the present utility model, the drawings required for the description of the embodiments will be briefly described below, and it is apparent that the drawings in the following description are only some embodiments of the present utility model, and other drawings may be obtained according to these drawings without inventive effort for a person skilled in the art.

FIG. 1 is a first orientation block diagram of the centrifugal grass cutting head of the present utility model.

FIG. 2 is a second orientation block diagram of the centrifugal mowing head of the present utility model.

FIG. 3 is a third orientation block diagram of the centrifugal grass cutting head of the present utility model.

Fig. 4 is a cross-sectional view taken along line AA of fig. 3.

FIG. 5 is a schematic view of an exploded construction of the turntable, shaft member and grass blades of the present utility model.

Wherein, the reference numerals are as follows: 100. carousel, 101, spacing blend stop, 102, spliced eye, 200, grass cutting blade, 201, fast-assembling hole, 202, pivot hole, 300, pivot spare, 301, rotation groove, 302, spliced pole, 400, blade rim plate, 401, radiator-fan, 402, axle sleeve, 500, shaft piece, 501, shaft hole.

Detailed Description

Embodiments of the present utility model are described in detail below, examples of which are illustrated in the accompanying drawings, wherein like or similar reference numerals refer to like or similar elements or elements having like or similar functions throughout. The embodiments described below by referring to the drawings are illustrative and intended to explain the present utility model and should not be construed as limiting the utility model.

Examples

Referring to fig. 1 and 2, the utility model provides a centrifugal grass cutting head, which comprises a rotary table 100 and a grass cutting blade 200, wherein the grass cutting blade 200 is rotatably arranged at a position of the rotary table 100, which is close to the edge of the rotary table 100, and further comprises a rotating shaft piece 300 arranged on the rotary table 100, a knife handle part of the grass cutting blade 200 is provided with a fast-assembling hole 201 and a rotating shaft hole 202 which penetrate and are communicated with each other, the aperture of the fast-assembling hole 201 is not smaller than the diameter of the rotating shaft piece 300, and the aperture of the rotating shaft hole 202 is smaller than the diameter of the rotating shaft piece 300; the circumference of the rotating shaft piece 300 is provided with a circle of rotating groove 301, the width of the communicating part of the quick assembly hole 201 and the rotating shaft hole 202 is larger than the width of the rotating shaft piece at the rotating groove 301, and the part of the grass cutting blade 200 provided with the rotating shaft hole 202 is rotatably arranged on the rotating groove 301 of the rotating shaft piece 300.

In this embodiment, by improving the structure of the grass mowing blade 200 on the grass mowing head, the quick-mounting hole 201 and the rotating shaft hole 202 on the handle portion of the grass mowing blade 200 form a big-small gourd hole design, when the grass mowing blade 200 is mounted, the quick-mounting hole 201 is sleeved on the rotating shaft piece 300, then the rotating groove 301 of the rotating shaft piece 300 is pushed into the rotating shaft hole 202 by transversely pulling the blade, the mounting of the grass mowing blade 200 is completed, when the grass mowing blade 200 is used, the rotating disc rotates, the blade is thrown outwards under the action of centrifugal force and is not easy to be separated, the improved grass mowing blade 200 is more efficient to mount and dismount, and no additional fasteners and auxiliary tools are needed to be relied on. One of the grass cutting blade 200 and the shaft 300 may be a plastic member, etc., and may be deformed and restored.

As an example, in this embodiment, a limiting stop bar 101 protruding from the top surface of the turntable is provided along the edge of the turntable 100, and the limiting stop bar 101 is higher than the rotation plane of the grass cutting blade 200, so as to limit the rotation angle and the movement area of the grass cutting blade 200. Preferably, two sets of grass cutting blades 200 and two sets of matched rotating shaft members 300 are oppositely arranged on the rotary table 100, so that grass cutting efficiency can be improved, two limiting stop bars 101 are oppositely arranged on the rotary table 100, the grass cutting blades 200 are arranged between the two limiting stop bars 101, and no matter the blades rotate clockwise or anticlockwise, the grass cutting blades are limited by the end parts of one of the limiting stop bars 101.

The structural design of the rotating shaft 300 also affects the dismounting efficiency, in this embodiment, the lower end of the rotating shaft 300 is provided with a plugging column 302, the turntable 100 is provided with a plugging hole 102 penetrating through and matching with the shape of the plugging column 302, the plugging column 302 is fixed on the plugging hole 102, wherein the rotating shaft 300 can be a plastic piece and is fixed on the plugging hole 102 through interference fit, in addition, the plugging column 302 can be made into a non-cylindrical special structure in shape, and the rotating shaft cannot rotate and cannot be easily released after being fixed.

Further, the grass cutting head further comprises a blade wheel disc 400 coaxially fixed with the rotary disc 100, the blade wheel disc 400 is fixed on one side of the rotary disc 100, which is away from the grass cutting blade 200, and a plurality of evenly distributed heat dissipation blades 401 are arranged on one side of the blade wheel disc 400, which is away from the rotary disc 100. When the grass mowing head is driven by the driving motor to work, the blade wheel disc 400 rotates along with the turntable in the same direction, and air cooling and heat dissipation can be performed on the motor part by reverse disturbance air flow.

The blade wheel disc 400 is connected with the turntable 100 through fastening screws, so as to enhance the connection stability of the blade wheel disc 400 and the turntable 100, in this embodiment, a clamping groove is further formed in the middle of one side, away from the grass mowing blade 200, of the turntable 100, a shaft sleeve 402 is coaxially arranged in the middle of the blade wheel disc 400, and the bottom end of the shaft sleeve 402 extends downwards and is clamped in the clamping groove.

Further, the grass mowing head further comprises a connecting shaft piece 500 fixed in the shaft sleeve 402, a connecting shaft hole 501 for directly connecting with a motor shaft of the driving motor is arranged on the central axis of the connecting shaft piece 500, and the grass mowing head can be connected with the motor shaft in an interference fit mode.

In the present utility model, unless explicitly specified and limited otherwise, the terms "mounted," "connected," "secured," and the like are to be construed broadly, and may be, for example, fixedly connected, detachably connected, or integrally formed; can be directly connected or indirectly connected through an intermediate medium, and can be communicated with the inside of two elements or the interaction relationship of the two elements. The specific meaning of the above terms in the present utility model can be understood by those of ordinary skill in the art according to the specific circumstances.

While embodiments of the present utility model have been shown and described above, it will be understood that the above embodiments are illustrative and not to be construed as limiting the utility model, and that variations, modifications, alternatives and variations may be made to the above embodiments by one of ordinary skill in the art within the scope of the utility model.

Various alterations and modifications will no doubt become apparent to those skilled in the art after having read the above description. Therefore, the appended claims should be construed to cover all such variations and modifications as fall within the true spirit and scope of the utility model. Any and all equivalents and alternatives falling within the scope of the claims are intended to be embraced therein.

Claims (7)

1. The utility model provides a centrifugal grass-mowing head, includes carousel (100) and grass-mowing blade (200), grass-mowing blade (200) rotate and install carousel (100) be close to the position at carousel (100) edge, its characterized in that: the grass cutting knife also comprises a rotating shaft piece (300) arranged on the turntable (100), wherein a knife handle part of the grass cutting knife blade (200) is provided with a fast-assembling hole (201) and a rotating shaft hole (202) which penetrate through and are communicated with each other, the aperture of the fast-assembling hole (201) is not smaller than the diameter of the rotating shaft piece (300), and the aperture of the rotating shaft hole (202) is smaller than the diameter of the rotating shaft piece (300); the grass cutting blade is characterized in that a circle of rotating groove (301) is formed in the circumference of the rotating shaft piece (300), the width of the communicating part of the quick assembly hole (201) and the rotating shaft hole (202) is larger than that of the rotating shaft piece (300) at the position of the rotating groove (301), and the part of the grass cutting blade (200) provided with the rotating shaft hole (202) is rotatably arranged on the rotating groove (301) of the rotating shaft piece (300).

2. A centrifugal grass cutting head as claimed in claim 1, wherein: and a limiting stop bar (101) protruding out of the top surface of the turntable (100) is arranged along the edge part of the turntable (100), and the limiting stop bar (101) is higher than the rotating plane of the grass cutting blade (200) and is used for limiting the rotating angle of the grass cutting blade (200).

3. A centrifugal grass cutting head as claimed in claim 2, wherein: two groups of grass cutting blades (200) and matched rotating shaft parts (300) are oppositely arranged on the rotary table (100), two limiting baffle strips (101) are oppositely arranged on the rotary table (100), and the grass cutting blades (200) are arranged between the two limiting baffle strips (101).

4. A centrifugal grass cutting head as claimed in claim 1, wherein: the lower extreme of pivot spare (300) is equipped with spliced pole (302), be equipped with on carousel (100) run through with spliced pole (302) shape looks adaptation spliced pole (102), spliced pole (302) are fixed on spliced pole (102).

5. A centrifugal grass cutting head as claimed in claim 1, wherein: still include with the coaxial fixed blade rim plate (400) of carousel (100), blade rim plate (400) are fixed in the one side that deviates from grass cutting blade (200) of carousel (100), the one side that deviates from carousel (100) of blade rim plate (400) is equipped with a plurality of evenly distributed's radiator blade (401).

6. A centrifugal grass cutting head as claimed in claim 5, wherein: the middle part of one side of carousel (100) that deviates from grass blade (200) is equipped with the draw-in groove, the middle part of blade rim plate (400) is coaxial to be provided with axle sleeve (402), the bottom downwardly extending of axle sleeve (402) and chucking are in the draw-in groove.

7. A centrifugal grass cutting head as claimed in claim 6, wherein: the motor is characterized by further comprising a connecting shaft piece (500) fixed in the shaft sleeve (402), wherein a connecting shaft hole (501) for being directly connected with a motor shaft of the driving motor is arranged on the central axis of the connecting shaft piece (500).