CN221082053U

CN221082053U - Weeding device of handheld brush cutter

Info

Publication number: CN221082053U
Application number: CN202320820932.5U
Authority: CN
Inventors: 吴妮瑾
Original assignee: Individual
Current assignee: Individual
Priority date: 2023-04-13
Filing date: 2023-04-13
Publication date: 2024-06-07
Anticipated expiration: 2033-04-13

Abstract

The utility model belongs to the technical field of mowers, and discloses a handheld weeding device of a brush cutter, which comprises a brush cutter gear box and a brush cutter roller, wherein the brush cutter roller and the brush cutter gear box are connected in a spline connection mode, a cutter structure is arranged on the outer wall surface of the brush cutter roller, a protection structure is arranged on the outer wall surface of the brush cutter roller, a limit structure is sleeved on the outer wall surface of the cutter structure, and the brush cutter has various types including right-angle type, obtuse-angle toothed type, flail type and the like. The mowing knife has various installation modes, including an integral four-blade type, a split two-blade type and the like, and a user can select different installation modes according to different weed characteristics. The protective cover of the utility model adopts more durable materials to improve the protective capability. In addition, a protective layer is added to prevent the blade from being dangerous when it collides with the housing.

Description

Weeding device of handheld brush cutter

Technical Field

The utility model belongs to the technical field of mowers, and particularly relates to a weeding device of a handheld brush cutter.

Background

The brush cutter is divided into electric power and internal combustion power according to different power, and the internal combustion power is divided into a two-stroke gasoline engine and a four-stroke gasoline engine; according to different transmission modes, the transmission mode is divided into flexible shaft transmission and straight rod transmission. And the float type and the pump film type are separated according to the oil supply mode of the engine. The working head of the brush cutter has two types: the blade and the nylon head are good in working environment, and the blade is used when sundries such as stones and the like are not contained, otherwise, the nylon head is safer

Existing hand-held brush cutters are typically equipped with horizontally rotating blades for weeding, but these blades are difficult to effectively weed in the root growth area of the crop. Therefore, some solutions to this problem have been invented, such as adding blades rotating vertically to the blades or increasing the number of blades, but these solutions all have problems, such as increasing the cost, increasing the weight of the machine, increasing the complexity of the machine, etc., so that a handheld brush cutter weeding device is needed to solve the above problems.

Disclosure of utility model

The present utility model is directed to a weeding device for a hand-held brush cutter, which solves the problem that the prior hand-held brush cutter proposed in the prior art is usually provided with blades rotating horizontally for weeding, but the blades are difficult to effectively weed in the root growing area of crops. Thus, solutions to this problem have been devised, such as adding vertically rotating blades to the blades or increasing the number of blades, but these solutions all suffer from problems such as increased cost, increased machine weight, increased machine complexity.

In order to achieve the above purpose, the present utility model provides the following technical solutions: the utility model provides a handheld brush cutter weeding device, includes brush cutter gear box and brush cutter knife roller, brush cutter knife roller adopts spline connection mode to be connected with the brush cutter gear box, cutter structure is installed to the outer wall of knife roller, protective structure is installed to the outer wall of knife roller, limit structure is sleeved to cutter structure's outer wall.

Preferably, the cutter structure comprises: knife roller lugs and knives; the cutter roller support lugs are sleeved on the outer wall surface of the cutter roller of the mower, and the cutter is connected with the cutter roller support lugs through bolts.

Preferably, the protective structure comprises: two split plastic shields and two anti-collision inner shells; the two split type plastic shields are connected through an assembly positioning boss and are respectively sleeved on the outer wall surface of the mower knife roll, and the two anti-collision inner housings are respectively arranged on the inner wall surfaces of the two split type plastic shields.

Preferably, the limiting structure includes: bearing mounting bush, bearing and bearing gland; the bearing mounting bush is sleeved on the outer end face of the mower knife roll, the bearing is mounted on the inner wall face of the bearing mounting bush, and the bearing gland is mounted on the outer wall face of the bearing.

Preferably, the cutters may be divided into right angle type, obtuse angle toothed type, and flail type.

Preferably, the outer wall surfaces of the two anti-collision inner shells are optionally provided with a common anti-collision shield and a caster anti-collision shield.

Preferably, the inner wall surfaces of the two split plastic shields are respectively provided with structural reinforcing ribs.

Preferably, the outer wall surface of the mower knife roll and the optional sleeve are provided with an integral shield, and the inner wall surface of the integral shield is provided with a grass blocking retainer ring.

Compared with the prior art, the utility model has the beneficial effects that: the utility model relates to a weeding device of a handheld brush cutter.

1. The mowing knife has the patterns of right angles, obtuse angles with saw teeth, flail types and the like, and different knife patterns can be selected according to different application scenes. The installation modes of the mowing knife are an integral four-blade type, a split four-blade type and a split two-blade type, and different installation modes can be selected according to different weed characteristics.

2. The shield of the present utility model is made of a more durable material to enhance the shielding capability while adding a protective layer to prevent the risk of the blade striking the housing. The protective shell is made of lightweight materials, the weight of the machine can be reduced, the machine is easier to carry and operate, the protective cover is assembled into the protective cover of the cutting machine in the initial state of the protective cover, the split protective cover can be made into an integral protective cover in the further optimized state, grass blocking check rings are arranged on the left side and the right side of the protective cover simultaneously, the safety of the protective cover can be optimized, the reinforcing ribs with different numbers and patterns are added on the protective cover, the assembly mode of the integral protective cover is simpler, the application of parts is less, and the quality is more reliable.

Drawings

FIG. 1 is a schematic view of a split type plastic shield mowing tool;

FIG. 2 is a schematic view of the whole structure of the split plastic shield according to the present utility model;

FIG. 3 is an exploded view of the overall structure of the present utility model;

FIG. 4 is a schematic view of the overall structure of the unitary shield according to the present utility model;

FIG. 5 is a schematic view of a unitary shroud mowing knife assembly in accordance with the present utility model;

FIG. 6 is a schematic view of the overall structure of a conventional crash shield according to the present utility model;

FIG. 7 is a schematic view of the overall structure of the caster anti-collision shield according to the present utility model;

FIG. 8 is a schematic diagram of a mower blade with a caster anti-collision shield;

FIG. 9 is a schematic view of a knife roll according to the present utility model;

FIG. 10 is a schematic view of a knife roller lug pattern according to the present utility model;

FIG. 11 is a schematic view of a mowing knife pattern according to the present utility model;

FIG. 12 is a schematic view of a mowing knife mounting style in accordance with the present utility model;

FIG. 13 is a cross-sectional view of the overall structure of the present utility model;

FIG. 14 is a schematic view of the whole of the split plastic shield and inner crash shell according to the present utility model;

FIG. 15 is a schematic view of a split plastic shield according to the present utility model in semi-section;

FIG. 16 is a schematic view of a bearing mounting bushing and a bearing gland according to the present utility model;

FIG. 17 is a schematic view of a crash shield with lugs that can be fitted with casters in accordance with the present utility model;

Fig. 18 is a cross-sectional view of a unitary shield in accordance with the present utility model.

In the figure: 1. a gear box of the brush cutter; 2. a mower blade roll; 3. knife roller support lugs; 4. a cutter; 5. a split plastic shield; 6. an anti-collision inner shell; 7. a bearing mounting bushing; 8. a bearing; 9. a bearing gland; 10. right angle type; 11. obtuse angle type; 12. obtuse angle with saw teeth; 13. flail type; 14. a common anti-collision shield; 15. a castor anti-collision shield; 16. a unitary shield; 17. grass blocking check ring.

Detailed Description

The following description of the embodiments of the present utility model will be made clearly and completely with reference to the accompanying drawings, in which it is apparent that the embodiments described are only some embodiments of the present utility model, but not all embodiments. All other embodiments, which can be made by those skilled in the art based on the embodiments of the utility model without making any inventive effort, are intended to be within the scope of the utility model.

Referring to fig. 1-12, the present utility model provides a technical solution:

Embodiment 1, please refer to fig. 1-12, a handheld brush cutter weeding device, including brush cutter gear box 1 and brush cutter roller 2, brush cutter roller 2 adopts spline connection mode to connect with brush cutter gear box 1, and cutter structure is installed to the outer wall of brush cutter roller 2, and protection architecture is installed to the outer wall of brush cutter roller 2, and the outer wall cover of cutter structure is equipped with limit structure.

The cutter structure includes: knife roller lugs 3 and knives 4; the knife roller support lugs 3 are sleeved on the outer wall surface of the knife roller 2 of the mower, the knife 4 is connected with the knife roller support lugs 3 through bolts, and the knife 4 can be divided into a right-angle type 10, an obtuse-angle type 11, an obtuse-angle type 12 with saw teeth and a flail type 13.

In this embodiment, because the cutting characteristics of weeds are different, the mower knife roller 2 cooperates with different cutters 4 to work, so the knife roller support lug 3 pattern on the mower knife roller 2 can also be correspondingly changed, the cutters 4 are fixed on the mower knife roller 2 through bolts, and the cutters 4 are locked by adopting self-locking nuts and screws (the front sections of the screws are threaded, and the rear sections of the screws are polished rods), so that when the mower knife roller is in work, the cutters 4 can still swing back and forth (along with the working condition of the cutters 4 when mowing) under the condition of left and right locking.

Specifically, the mower blade roller 2 of the weeding device rotates along with the transmission of the gear box 1 of the brush cutter, meanwhile, the cutter 4 also rotates backwards along with the rotation of the mower blade roller 2, when the tip of the cutter 4 touches the ground on which weeds grow, the cutter 4 swings to cut the ground, weeds are cut, the initial state of the cutter roller lugs 3 is one group, the optimized state is two groups, the further optimized state is three groups, the installation mode of the cutter 4 is provided with an integral four-blade type, a split four-blade type and the like, the mode of the cutter 4 is provided with a right angle type 10, and mowing heights of the cutters are consistent; obtuse angle 11, its applicability is wide; the obtuse angle is provided with the saw tooth type 12, so that the cutting efficiency is high, and the cutter is not blocked; flail 13 has good grass cutting effect on shrubs and weeds which are difficult to cut.

Embodiment 2 referring to fig. 1 to 12, the protection structure includes: two split plastic shields 5 and two anti-collision inner shells 6; the two split type plastic shields 5 are connected by adopting an assembly positioning boss and are respectively sleeved on the outer wall surface of the mower knife roll 2, and the two anti-collision inner shells 6 are respectively arranged on the inner wall surfaces of the two split type plastic shields 5.

The limit structure comprises: a bearing mounting bush 7, a bearing 8 and a bearing gland 9; the bearing installation bush 7 is sleeved on the outer end face of the mower knife roll 2, the bearing 8 is installed on the inner wall face of the bearing installation bush 7, and the bearing gland 9 is installed on the outer wall face of the bearing 8.

The outer wall surfaces of the two anti-collision inner shells 6 are optionally provided with a common anti-collision shield 14 and a trundle anti-collision shield 15, the inner wall surfaces of the two split type plastic shields 5 are respectively provided with a structural reinforcing rib, the outer wall surfaces of the mower knife roll 2 and the integral shield 16 are optionally sleeved, the inner wall surfaces of the integral shield 16 are provided with grass blocking check rings 17, and proper gaps are ensured between the plastic shields and the mower knife roll 2 so that the mower knife roll 2 can flexibly rotate and simultaneously prevent weeds from being blocked by the mower knife roll 2 when the bearing 8 rotates during working.

In this embodiment, the protection architecture accessible installation rubber truckle is further optimized, and the stone striking of left and right directions is avoided to ordinary crashproof guard shield 14 and truckle crashproof guard shield 15, damages the guard shield, utilizes bearing gland 9 to push down bearing 8 and prevents that bearing 8 from outwards removing, damages mower knife roll 2, and bearing installation bush 7 is used for fixed bearing 8, and two crashproof inner shells 6 are the sheet metal component, and engineering plastics is selected to integral guard shield 16, and the strengthening rib in the guard shield can be according to operational environment design.

Specifically, the two split type plastic shields 5 are made of more durable materials so as to improve the protection capability, meanwhile, the two anti-collision inner shells 6 are added to prevent the danger when the blades collide with the outer shells, the two split type plastic shields 5 are made of lightweight materials, the weight of the machine can be reduced, the machine is easier to carry and operate, the split type shields can be made into integral shields in a further optimized state, grass blocking check rings 17 are arranged on the left side and the right side, rubber casters can be arranged in the further optimized state, the caster anti-collision shields 15 are formed, stone collision in the left direction and the right direction is avoided, the shields are damaged, meanwhile, the operation is convenient, the mowing device with casters moves quickly, the mowing device with casters is more flexible to use, reinforcing ribs with different numbers and patterns are added on the shields, the quality is more reliable is guaranteed, and the grass blocking check rings 17 can be arranged on the left side and the right side of the split type plastic shields 5 in the further optimized state.

The foregoing is only a preferred embodiment of the present utility model, but the scope of the present utility model is not limited thereto, and any person skilled in the art, who is within the scope of the present utility model, should make equivalent substitutions or modifications according to the technical scheme of the present utility model and the inventive concept thereof, and should be covered by the scope of the present utility model.

Claims

1. The weeding device of the handheld brush cutter comprises a brush cutter gear box (1) and a brush cutter roller (2), and is characterized in that the brush cutter roller (2) is connected with the brush cutter gear box (1) in a spline connection mode, a cutter structure is arranged on the outer wall surface of the brush cutter roller (2), a protection structure is arranged on the outer wall surface of the brush cutter roller (2), and a limiting structure is sleeved on the outer wall surface of the cutter structure;

the cutter structure comprises: a knife roller support lug (3) and a knife (4);

The cutter roller support lugs (3) are sleeved on the outer wall surface of the cutter roller (2) of the mower, and the cutters (4) are connected with the cutter roller support lugs (3) through bolts;

The cutter (4) can be divided into a right angle type (10), an obtuse angle type (11), an obtuse angle type (12) with saw teeth and flail type (13).

2. A handheld brush cutter weeding device according to claim 1, wherein the protective structure comprises: two split plastic shields (5) and two anti-collision inner shells (6);

The two split type plastic shields (5) are connected through assembling positioning bosses and are respectively sleeved on the outer wall surfaces of the mower knife roller (2), and the two anti-collision inner shells (6) are respectively arranged on the inner wall surfaces of the two split type plastic shields (5).

3. A handheld brush cutter weeding device according to claim 1, wherein the limit structure comprises: a bearing mounting bush (7), a bearing (8) and a bearing gland (9);

the bearing mounting bush (7) is sleeved on the outer end face of the mower knife roll (2), the bearing (8) is mounted on the inner wall face of the bearing mounting bush (7), and the bearing gland (9) is mounted on the outer wall face of the bearing (8).

4. A weeding device for hand-held brush cutter according to claim 2, wherein the outer wall surfaces of the two inner housings (6) are optionally provided with a common anti-collision shield (14) and a caster anti-collision shield (15).

5. A weeding device for a hand-held brush cutter according to claim 2, wherein the inner wall surfaces of the two split plastic shields (5) are respectively provided with structural reinforcing ribs.

6. A weeding device for a hand-held brush cutter according to claim 1, wherein the outer wall surface of the cutter roller (2) of the mower is optionally sleeved with an integral shield (16), and the inner wall surface of the integral shield (16) is provided with a grass blocking retainer ring (17).