CN220875121U

CN220875121U - Grass mowing machine

Info

Publication number: CN220875121U
Application number: CN202322678883.9U
Authority: CN
Inventors: 徐春初
Original assignee: Zhejiang Dazhou Garden Machinery Co ltd
Current assignee: Zhejiang Dazhou Garden Machinery Co ltd
Priority date: 2023-09-28
Filing date: 2023-09-28
Publication date: 2024-05-03
Anticipated expiration: 2033-09-28

Abstract

The utility model belongs to the technical field of weeding equipment, in particular to a grass trimmer, which comprises an operating lever and a base arranged at the bottom end of the operating lever, wherein a rotating shaft is arranged in the base in a rotating way, a cutting blade is sleeved on the rotating shaft, a protective cover is arranged on the base, a rotating piece sleeved on the rotating shaft is arranged between the cutting blade and the protective cover, and the rotating piece comprises a mounting piece sleeved on the rotating shaft and a cutting piece arranged at the periphery of the mounting piece and used for cutting weeds. The utility model can effectively prevent weeds from winding between the cutting blade and the protective cover, thereby preventing the weeds from influencing the rotation of the cutting blade and having good mowing effect.

Description

Grass mowing machine

Technical field:

The utility model belongs to the technical field of weeding equipment, and particularly relates to a grass trimmer.

The background technology is as follows:

The grass cutter is used for cutting weeds in paddy fields, lawns, gardens, pastures and the like, and is a handheld tool.

The prior grass trimmer, as shown in fig. 1, comprises an operating lever 1, a base 2 arranged at the bottom end of the operating lever 1, and a cutting blade 3 rotatably connected to the base 2, wherein a protective cover 4 is fixed on the base 2, and the diameter of the protective cover 4 is larger than that of the cutting blade 3. When the cutting blade 3 rotates to cut weeds, the protective cover 4 protects rice or trees around the weeds, and prevents the cutting blade 3 from cutting the rice or trees.

The grass trimmer has the following defects: during the cutting of weeds by the cutting blade 3, weeds can enter between the protective cover 4 and the cutting blade 3 and be wound in the gap, thereby influencing the rotation of the cutting blade 3 and consequently the mowing effect of the mower.

The invention comprises the following steps:

The utility model aims to provide a grass mower which can effectively prevent weeds from winding between a cutting blade and a protective cover, so that the weeds are prevented from affecting the rotation of the cutting blade, and the grass mowing effect is good.

The utility model is realized in the following way:

The utility model provides a grass cutting machine, includes the control lever and sets up the base in the control lever bottom, the rotation is equipped with the pivot in the base, the cover is equipped with cutting blade in the pivot, be equipped with the safety cover on the base, be equipped with the suit between cutting blade and the safety cover at epaxial rotatory piece of pivot, rotatory piece is including the suit in epaxial installation piece of pivot and the cutting piece that sets up in the installation piece periphery and be used for cutting weeds.

In the grass cutting machine described above, the mounting structure of the protective cover: the periphery of the base is provided with an installing seat, the protective cover is sleeved on the base, and a screw penetrates through the protective cover to be in threaded connection with the installing seat.

In the grass cutting machine, the cutting blade comprises a mounting plate sleeved on the rotating shaft, a connecting sheet arranged on the periphery of the mounting plate and a blade body arranged at the outer end of the connecting sheet, the connecting sheet inclines from the inner end to the outer end to the side far away from the protection cover, the cutting blade comprises a cutting blade I and a cutting blade II, the outer end of the cutting blade I is bent towards one side of the blade body, and the outer end of the cutting blade is bent towards one side of the protection cover.

In the grass mowing machine, the mounting plate, the connecting sheet and the blade body are of an integrated structure.

In the grass trimmer, the bending angle α of the outer end of the cutting blade is the same as the bending angle β of the outer end of the cutting blade, and the bending angle α of the outer end of the cutting blade and the bending angle β of the outer end of the cutting blade are 20 ° -40 °.

In the grass mowing machine, the first cutting piece and the second cutting piece are arranged at intervals and are uniformly distributed on the circumference.

In the grass cutting machine, the maximum outer diameter of the rotary blade is smaller than the maximum outer diameter of the cutting blade, the maximum diameters of the bending points of the first cutting blade and the second cutting blade are smaller than the minimum diameter of the blade body, and the minimum diameters of the bending points of the first cutting blade and the second cutting blade are larger than the maximum diameter of the mounting plate.

In the grass cutting machine, the mounting plate and the cutting plate are of an integrated structure, the mounting plate and the cutting plate are made of stainless steel or iron, and the thickness h is 0.8mm-1.2mm.

In the grass mowing machine, the outer pressing plate and the inner pressing plate are sleeved on the rotating shaft, and the cutting blade and the rotating piece are arranged between the outer pressing plate and the inner pressing plate and are fastened and connected through nuts which are in threaded connection with the outer end of the rotating shaft.

In the grass trimmer, the outer end of the inner pressing plate protrudes towards one side of the rotary piece to form a mounting boss, and the cutting blade and the mounting piece are sleeved on the mounting boss.

In the grass mowing machine, the inner pressing plate comprises a sleeving part sleeved on the rotating shaft and a pressing plate part arranged on the periphery of the sleeving part, a limiting groove is axially formed in an inner hole of the sleeving part, and a limiting projection matched with the limiting groove is arranged on the rotating shaft.

In the grass mowing machine, the limiting grooves are uniformly distributed on the circumference.

In the grass trimmer described above, the cutting blade and the rotary blade are disposed between the outer platen and the platen portion.

In the grass mowing machine, the outer side wall of the pressing plate portion extends to one side of the protective cover to form the assembly cylinder body, the assembly cylinder body is sleeved outside the base, a first through hole for the fixed shaft to pass through is formed in the assembly cylinder body, and a second through hole for the fixed shaft to pass through is formed in the base.

In the grass mowing machine, a bearing sleeved on the rotating shaft is arranged between the base and the rotating shaft, and the sleeved part is in interference limit with the bearing.

In the grass mowing machine, the sleeving part, the pressing plate part and the assembling cylinder body are of an integrated structure.

Compared with the prior art, the utility model has the outstanding advantages that:

1. according to the weeding machine, the rotary piece is arranged between the cutting blade and the protective cover, the cutting blade of the rotary piece cuts weeds between the cutting blade and the protective cover, the weeds are effectively prevented from being wound between the cutting blade and the protective cover, the weeds are prevented from affecting the rotation of the cutting blade, and the weeding effect is good;

2. The first outer end of the cutting blade is bent towards one side of the blade body, the second outer end of the cutting blade is bent towards one side of the protective cover, the cutting blade cuts weeds between the cutting blade and the rotating blade, and the second cutting blade cuts weeds between the rotating blade and the protective cover, namely the weeds between the cutting blade and the protective cover are better cut.

Description of the drawings:

FIG. 1 is a perspective view of the prior art;

FIG. 2 is a perspective view of the present utility model;

FIG. 3 is a cross-sectional view of the utility model without the lever;

FIG. 4 is a perspective view of a rotary blade of the present utility model;

Fig. 5 is an exploded view of the present utility model without the lever.

Reference numerals:

in fig. 1: 1. a joystick; 2. a base; 3. a cutting blade; 4. and a protective cover.

In fig. 2-5: 11. a joystick; 12. a base; 13. a rotating shaft; 14. a cutting blade; 14a, mounting plate; 14b, a connecting piece; 14c, a blade body; 15. a protective cover; 16. a rotary piece; 16a, mounting pieces; 16b, cutting the sheet; 16b1, cutting the first sheet; 16b2, cutting the second sheet; 17. an outer pressure plate; 18. an inner pressure plate; 18a, a sleeving part; 18b, a pressing plate part; 18c, assembling a cylinder; 19. a nut; 20. a mounting boss; 21. a limit groove; 22. a limit bump; 23. a first through hole; 24. a second through hole; 25. a mounting base; 26. and (5) a screw.

The specific embodiment is as follows:

The utility model is further described below with reference to the specific examples, see fig. 2-5:

The utility model provides a grass cutting machine, includes control lever 11 and sets up the base 12 in the bottom of control lever 11, the rotation of base 12 is equipped with pivot 13, the cover is equipped with cutting blade 14 on the pivot 13, be equipped with safety cover 15 on the base 12, be equipped with the rotary piece 16 of suit in pivot 13 between cutting blade 14 and the safety cover 15, rotary piece 16 includes the mounting piece 16a of suit in pivot 13 and sets up the cutting piece 16b that is used for cutting weeds at mounting piece 16a periphery.

The working principle of the utility model is as follows: as shown in fig. 2, 3 and 5, when the rotating shaft 13 rotates, the cutting blade 14 and the rotating blade 16 are driven to rotate together, the cutting blade 16b rotates to cut weeds between the cutting blade 14 and the protecting cover 15, and the weeds are effectively prevented from being wound between the cutting blade 14 and the protecting cover 15, so that the weeds are prevented from affecting the rotation of the cutting blade 14, and the mowing effect is good.

Mounting structure of the protection cover 15: as shown in fig. 3 and 5, the outer periphery of the base 12 is provided with a mounting seat 25, the protective cover 15 is sleeved on the base 12, and a screw 26 passes through the protective cover 15 and is screwed with the mounting seat 25.

Structure of the cutting blade 14 and the cutting blade 16 b: as shown in fig. 2-5, the cutting blade 14 includes a mounting plate 14a sleeved on the rotating shaft 13, a connecting piece 14b disposed on the periphery of the mounting plate 14a, and a blade body 14c disposed on the outer end of the connecting piece 14b, the connecting piece 14b is inclined from the inner end to the outer end toward the side away from the protective cover 15, the cutting blade 16b includes a first cutting blade 16b1 and a second cutting blade 16b2, the outer end of the first cutting blade 16b1 is bent toward the side of the blade body 14c, the outer end of the second cutting blade 16b2 is bent toward the side of the protective cover 15, the first cutting blade 16b1 cuts weeds between the cutting blade 14 and the rotating blade 16, and the second cutting blade 16b2 cuts weeds between the rotating blade 16 and the protective cover 15, i.e., better cuts weeds between the cutting blade 14 and the protective cover 15.

Further, the mounting plate 14a, the connecting piece 14b and the blade body 14c are integrally formed.

Preferably, the bending angle α of the outer end of the first cutting blade 16b1 is the same as the bending angle β of the outer end of the second cutting blade 16b2, and the bending angle α of the outer end of the first cutting blade 16b1 and the bending angle β of the outer end of the second cutting blade 16b2 are 20 ° to 40 °. In this embodiment, the bending angle α of the outer end of the first cutting blade 16b1 and the bending angle β of the outer end of the second cutting blade 16b2 are 30 °.

For better cutting effect, as shown in fig. 4, the first cutting blade 16b1 and the second cutting blade 16b2 are arranged at intervals and uniformly distributed circumferentially. In this embodiment, 3 cutting blades are uniformly distributed on the circumference of the first cutting blade 16b1, and 3 cutting blades are uniformly distributed on the circumference of the second cutting blade 16b 2.

Preferably, the maximum outer diameter of the rotary blade 16 is smaller than the maximum outer diameter of the cutting blade 14, the maximum diameter of the bending points of the first cutting blade 16b1 and the second cutting blade 16b2 is smaller than the minimum diameter of the blade body 14c, and the minimum diameter of the bending points of the first cutting blade 16b1 and the second cutting blade 16b2 is larger than the maximum diameter of the mounting plate 14 a.

In order to reduce the assembly steps, the mounting tab 16a and the cutting tab 16b are of unitary construction.

For better cutting effect, the material of the mounting piece 16a and the cutting piece 16b is stainless steel or iron, and the thickness h is 0.8mm-1.2mm. In this embodiment, the material of the mounting piece 16a and the cutting piece 16b is stainless steel or iron, and the thickness h is 1mm.

Mounting structure of the cutting blade 14 and the rotary blade 16: as shown in fig. 3 and 5, the rotating shaft 13 is sleeved with an outer pressing plate 17 and an inner pressing plate 18, and the cutting blade 14 and the rotating piece 16 are arranged between the outer pressing plate 17 and the inner pressing plate 18 and are fastened and connected by a nut 19 screwed at the outer end of the rotating shaft 13.

In order to radially limit the installation of the rotary blade 16 and the cutting blade 14, an installation boss 20 protrudes from the outer end of the inner pressing plate 18 to one side of the rotary blade 16, and the cutting blade 14 and the installation blade 16a are sleeved on the installation boss 20.

The structure of the inner platen 18: the inner pressure plate 18 comprises a sleeving part 18a sleeved on the rotating shaft 13 and a pressure plate part 18b arranged on the periphery of the sleeving part 18a, a limiting groove 21 is axially formed in an inner hole of the sleeving part 18a, a limiting projection 22 matched with the limiting groove 21 is arranged on the rotating shaft 13, the rotating shaft 13 drives the inner pressure plate 18 to rotate through the limiting projection 22 and the limiting groove 21, and the cutting blade 14 and the rotating blade 16 are driven to rotate better.

Further, the limit grooves 21 are uniformly distributed circumferentially. In this embodiment, 6 limit grooves 21 are uniformly distributed on the circumference.

Still further, the cutting blade 14 and the rotary blade 16 are disposed between the outer platen 17 and the platen portion 18 b.

In order to facilitate the installation of the nut 19, the outer side wall of the pressing plate portion 18b extends to the side of the protection cover 15 to form an assembling cylinder 18c, the assembling cylinder 18c is sleeved outside the base 12, a first through hole 23 for the passing of the fixing shaft is formed in the assembling cylinder 18c, and a second through hole 24 for the passing of the fixing shaft is formed in the base 12. During assembly, the fixing shaft is inserted into the second through hole 24 through the first through hole 23, the inner pressing plate 18 is fixed with the base 12, and the fixing shaft is pulled out after the nuts 19 are screwed. In this embodiment, the fixed shaft is a pin shaft.

The limiting structure of the inner pressing plate 18 is characterized in that a bearing sleeved on the rotating shaft 13 is arranged between the base 12 and the rotating shaft 13, and the sleeved part 18a is in interference limiting with the bearing.

In order to reduce the assembly steps, the sleeve portion 18a, the pressing plate portion 18b and the assembly cylinder 18c are integrally formed.

The above embodiment is only one of the preferred embodiments of the present utility model, and is not intended to limit the scope of the present utility model, therefore: all equivalent changes in shape, structure and principle of the utility model should be covered in the scope of protection of the utility model.

Claims

1. The utility model provides a grass cutting machine, includes control lever (11) and sets up base (12) in control lever (11) bottom, base (12) internal rotation is equipped with pivot (13), cover cutting blade (14) on pivot (13), be equipped with safety cover (15) on base (12), its characterized in that: a rotary piece (16) sleeved on the rotating shaft (13) is arranged between the cutting blade (14) and the protective cover (15), and the rotary piece (16) comprises a mounting piece (16 a) sleeved on the rotating shaft (13) and a cutting piece (16 b) arranged on the periphery of the mounting piece (16 a) and used for cutting weeds.

2. A lawnmower as claimed in claim 1, wherein: cutting blade (14) are including suit mounting panel (14 a) on pivot (13), set up connection piece (14 b) at mounting panel (14 a) periphery to and set up blade body (14 c) at connection piece (14 b) outer end, connection piece (14 b) are from inner to outer end to keeping away from safety cover (15) one side slope, cutting blade (16 b) are including cutting blade one (16 b 1) and cutting blade two (16 b 2), cutting blade one (16 b 1) outer end is buckled to blade body (14 c) one side, cutting blade two (16 b 2) outer end is buckled to safety cover (15) one side.

3. A lawnmower as claimed in claim 2, wherein: the bending angle of the outer end of the first cutting blade (16 b 1) is the same as that of the outer end of the second cutting blade (16 b 2), and the bending angle of the outer end of the first cutting blade (16 b 1) and that of the outer end of the second cutting blade (16 b 2) are 20-40 degrees.

4. A lawnmower as claimed in claim 2, wherein: the first cutting piece (16 b 1) and the second cutting piece (16 b 2) are arranged at intervals and are uniformly distributed on the circumference.

5. A lawnmower as claimed in claim 2, wherein: the maximum outer diameter of the rotary piece (16) is smaller than the maximum outer diameter of the cutting blade (14), the maximum diameter of the bending point of the first cutting piece (16 b 1) and the second cutting piece (16 b 2) is smaller than the minimum diameter of the blade body (14 c), and the minimum diameter of the bending point of the first cutting piece (16 b 1) and the second cutting piece (16 b 2) is larger than the maximum diameter of the mounting plate (14 a).

6. A lawnmower as claimed in claim 1, wherein: the mounting piece (16 a) and the cutting piece (16 b) are of an integrated structure, the mounting piece (16 a) and the cutting piece (16 b) are made of stainless steel or iron, and the thickness is 0.8mm-1.2mm.

7. A lawnmower as claimed in claim 1, wherein: the rotary shaft (13) is sleeved with an outer pressing plate (17) and an inner pressing plate (18), and the cutting blade (14) and the rotary piece (16) are arranged between the outer pressing plate (17) and the inner pressing plate (18) and are fastened and connected through nuts (19) which are in threaded connection with the outer end of the rotary shaft (13).

8. A lawnmower as claimed in claim 7, wherein: the outer end of the inner pressure plate (18) protrudes towards the rotary plate (16) and is provided with a mounting boss (20), and the cutting blade (14) and the mounting plate (16 a) are sleeved on the mounting boss (20).

9. A lawnmower as claimed in claim 7, wherein: the inner pressure plate (18) comprises a sleeving part (18 a) sleeved on the rotating shaft (13) and a pressure plate part (18 b) arranged on the periphery of the sleeving part (18 a), a limiting groove (21) is axially formed in an inner hole of the sleeving part (18 a), and a limiting lug (22) matched with the limiting groove (21) is arranged on the rotating shaft (13).

10. A lawnmower as claimed in claim 9 wherein: the outer side wall of the pressing plate part (18 b) extends to one side of the protective cover (15) to form an assembling cylinder body (18 c), the assembling cylinder body (18 c) is sleeved outside the base (12), a first through hole (23) for the fixed shaft to pass through is formed in the assembling cylinder body (18 c), and a second through hole (24) for the fixed shaft to pass through is formed in the base (12).