Rotary blade assembly for brush cutter

Abstract

The utility model discloses a rotary blade assembly for a brush cutter, and belongs to the technical field of greening maintenance. A rotary blade assembly for a brush cutter comprises a tool rest and further comprises at least two sets of blades which are installed on the tool rest and symmetrically distributed along the transverse axis of the tool rest. The positioning piece is arranged on the knife rest and used for enabling the two sets of blades to abut against the knife rest, and the plane where the two sets of blades are located intersects with the plane where the knife rest is located; according to the grass trimmer, grass and small shrubs can be rapidly cut through matching of the cutter handle and the cutting edge, the cutter handle is movably connected through the bolt and the nut, so that the blade can move backwards instead of hard collision when touching hard objects such as stones, the buffering protection function is achieved, the blade is not prone to breakage, normal grass trimming operation is guaranteed, and the grass trimmer is convenient to use. The use cost of the brush cutter can be reduced, and the grass mowing efficiency is improved.

Description

TECHNICAL FIELD

[0001] The utility model relates to afforesting maintenance technical field especially, it relates to a rotary blade assembly for brush cutter. BACKGROUND

[0002] The brush cutter is also called as the weeding machine, the grass cutter and so on, is mainly used for pruning the lawn, removes the weed and the shrub etc, it has the extensive application in the afforesting maintenance in the field such as gardens, agriculture and public greenbelt management, wherein, the cutting member of brush cutter is one of its core components, is mainly used for cutting the grass and small shrub efficiently.

[0003] The current brush cutter can drive the cutting member to rotate through the rotating mechanism in the use process, and the commonly used cutting member is the grass rope or blade, and the grass rope or blade can cut the grass and small shrub.

[0004] However, in the actual use process, since the grass rope is relatively soft, the grass rope is easy to break during cutting, and since the hard objects such as stones are easy to appear under the grass, and the cutting by the blade is also easy to appear the broken condition, not only the use cost of the brush cutter is increased, but also the grass cutting efficiency is reduced, therefore, in order to solve the above problems, the rotary blade assembly for brush cutter is provided. UTILITY MODEL CONTENTS

[0005] The utility model aims at solving the problems in the prior art that the cutting member of the brush cutter is easy to be damaged, not only increases the use cost of the brush cutter, but also reduces the grass cutting efficiency, and provides the rotary blade assembly for brush cutter.

[0006] In order to achieve the above object, the utility model adopts the following technical scheme:

[0007] A rotary blade assembly for brush cutter, comprising a knife holder, further comprising: at least two groups of blades, which are installed on the knife holder, wherein the two groups of blades are symmetrically distributed along the transverse axis of the knife holder; a positioning member provided on the knife holder, wherein the positioning member is used for abutting the two groups of blades on the knife holder, and the plane where the two groups of blades are located intersects the plane where the knife holder is located.

[0008] In order to cut the grass and small shrub, preferably, the blade comprises a blade handle, an inclined blade edge is arranged on the blade handle, the blade edge is integrally formed with the blade handle, and the plane where the blade edge is located intersects the plane where the blade handle is located.

[0009] In order to improve the grass cutting efficiency, further, the angle between the blade handle and the blade edge is 130°-150°.

[0010] In order to ensure the use effect of the blade, further, the material of the blade handle and the blade edge is metal.

[0011] In order to flexibly disassemble the blade, preferably, the positioning member comprises a bolt, positioning holes are formed on the tool holder and the tool shank, and the bolt passes through the positioning holes and is threadedly connected with a nut.

[0012] In order to conveniently install the blade assembly on the brush cutter, preferably, an installation hole is formed through the tool holder, and the installation hole has a diameter of 20-30 mm.

[0013] Compared with the prior art, the utility model provides a rotary blade assembly for brush cutter, which has the following beneficial effects:

[0014] 1、The rotary blade assembly for brush cutter, through the cooperation of the tool shank and the tool edge, can quickly cut grass and small shrubs, and the articulated connection of the tool shank by the bolt and the nut enables the blade to move backward when encountering hard objects such as stones instead of hard collision, thereby achieving the effect of buffer protection, preventing the blade from being broken, reducing the replacement frequency of the blade, ensuring the normal operation of grass cutting, reducing the use cost of the brush cutter, and improving the grass cutting efficiency.

[0015] 2、The rotary blade assembly for brush cutter, through the design of the forked type of the upper and lower two groups of blades, can greatly increase the range area of grass cutting, can cut down low grass, has a fast grass cutting speed, and the tool holder is not easy to be entangled with grass, so that the worker can cut grass more quickly and conveniently, thereby further improving the grass cutting efficiency, saving manpower and saving fuel consumption.

[0016] The parts not involved in the device are the same as or can be realized by the prior art, and the utility model solves the problem that the cutting member of the brush cutter is easily damaged in the prior art, which not only increases the use cost of the brush cutter, but also reduces the grass cutting efficiency. BRIEF DESCRIPTION OF DRAWINGS

[0017] Figure 1 The utility model provides a kind of rotary blade assembly for brush cutter's axonometric structure schematic view;

[0018] Figure 2 The utility model provides a kind of rotary blade assembly for brush cutter's explosion view;

[0019] Figure 3 The utility model provides a kind of rotary blade assembly for brush cutter's plan view structure schematic view;

[0020] Figure 4 The utility model provides a kind of rotary blade assembly for brush cutter's front view structure schematic view.

[0021] In the drawing: 1, tool holder;2, tool shank;3, tool edge;4, bolt;41, nut;42, positioning hole;5, installation hole. DETAILED DESCRIPTION

[0022] The technical solutions in the embodiments of the utility model will be apparently and completely described below with reference to the drawings in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, rather than all the embodiments.

[0023] In the description of the utility model, it needs to be understood that the terms "upper", "lower", "front", "rear", "left", "right", "top", "bottom", "inner", "outer" and the like indicate the orientation or positional relationship shown in the drawings, and are only for the convenience of describing the utility model and simplifying the description, and therefore cannot be understood as limiting the utility model in a specific orientation, structure and operation.

[0024] Embodiment:

[0025] With reference to Figures 1-4 The utility model embodiment provides a rotary blade assembly for brush cutter, including tool rest 1, still include: at least two groups of blade, all install on tool rest 1, and every two blades are a group, simultaneously blade can also be designed into four groups or multiple groups, and the blade assembly of two groups of blade design is taken as an example, wherein, two groups of blade are symmetrically distributed along the transverse axis of tool rest 1, and the steel material selected for tool handle 2 and blade edge 3, blade is preferably treated, tool rest selects ordinary steel material, it has the advantages of high strength, good corrosion resistance, can ensure the use effect of blade, positioning member is arranged on tool rest 1, wherein, positioning member is used to press two groups of blade to tool rest 1, and the plane where two groups of blade are located intersects with the plane where tool rest 1 is located, and installation hole 5 is set up on tool rest 1, and the hole diameter of installation hole 5 is 20mm-30mm, and the hole diameter of installation hole 5 is preferably 25mm in the blade assembly, for installing blade assembly on the rotary mechanism of brush cutter.

[0026] Specifically, in use, through the setting of tool rest 1 and blade, the fast cutting of grass and small shrubs can be carried out, and through the hinged connection of positioning member to blade, the blade can move backward when encountering hard objects such as stones, instead of hard collision, thereby realizing the buffering protection effect, preventing the blade from being broken, reducing the replacement frequency of blade, ensuring the normal operation of grass cutting, reducing the use cost of brush cutter, improving the grass cutting efficiency, through the divergent design of the upper and lower two groups of blades, the range area of grass cutting can be greatly increased, the grass can be cut down, the grass cutting speed is fast, the tool rest 1 is not easy to be entangled with grass, the worker is more convenient during the grass cutting process, thereby further improving the grass cutting efficiency, saving manpower and saving fuel consumption.

[0027] The blade comprises a blade handle 2, and a blade edge 3 is arranged on the blade handle 2 in an inclined manner, the blade edge 3 is integrally formed with the blade handle 2, a plane where the blade edge 3 is located intersects with a plane where the blade handle 2 is located, and an included angle between the blade handle 2 and the blade edge 3 is 130°-150°, and the angle is preferably 143° in the blade assembly.

[0028] In addition, screws can be installed in the holes on both sides of the blade handle 2 to prevent the blade handle 2 from rotating too much and being easily stuck in the machine head.

[0029] Specifically, the cooperation of the blade handle 2 and the blade edge 3 can cut grass and small shrubs, and can also expand the grass cutting range of the blade, thereby improving the grass cutting efficiency.

[0030] The positioning member comprises a bolt 4, and positioning holes 42 are formed in the blade holder 1 and the blade handle 2, and the bolt 4 passes through the positioning holes 42 and is threadedly connected with a nut 41.

[0031] Specifically, the bolt 4, the nut 41 and the positioning holes 42 can abut the blade handle 2 against the surface of the blade holder 1, thereby achieving flexible disassembly and assembly of the blade, and the bolt 4 and the nut 41 are connected in a hinged manner, so that the blade can move backward when it hits hard objects such as stones, instead of hard collision, thereby achieving the effect of buffer protection and ensuring that the blade is not easily broken.

[0032] Working principle: the rotary blade assembly of the brush cutting machine can quickly cut grass and small shrubs through the cooperation of the blade handle 2 and the blade edge 3 during use, and the bolt 4 and the nut 41 are connected to the blade handle 2 in a hinged manner, so that the blade can move backward when it hits hard objects such as stones, instead of hard collision, thereby achieving the effect of buffer protection and making the blade not easily broken, reducing the replacement frequency of the blade and ensuring the normal operation of the grass cutting work, which not only reduces the use cost of the brush cutting machine, but also improves the grass cutting efficiency.

[0033] In addition, the two sets of blades are designed in a diverging manner during use, which can greatly increase the range of grass cutting, can cut down low grass, and has a fast grass cutting speed, so that the blade holder 1 is not easy to be entangled with grass, and the worker can cut grass more quickly and conveniently, thereby further improving the grass cutting efficiency, saving manpower and saving fuel consumption.

[0034] The above is only a preferred specific embodiment of the present application, but the protection scope of the present application is not limited thereto, and any skilled person in the art can make equivalent replacement or change according to the technical scheme and the inventive concept of the present application within the technical range disclosed by the present application, which should be covered within the protection scope of the present application.

Claims

1. A rotating blade assembly for a brush cutter comprising a blade carrier (1), characterized in that, Also include: At least two groups of blades, each mounted on the tool rest (1), Wherein, two groups of blades along the transverse axis of the tool rest (1) symmetry distribution; Positioning member provided on the tool rest (1), Wherein, the positioning member for two groups of blades to resist to the tool rest (1), and the plane of two groups of blades and the plane of tool rest (1) intersect.

2. A rotating blade assembly for a brush cutter as claimed in claim 1, wherein The blade includes a handle (2), the handle (2) is provided with a blade edge (3) inclinedly, the blade edge (3) and the handle (2) are integrally formed, the plane of the blade edge (3) and the plane of the handle (2) intersect.

3. A rotating blade assembly for a brush cutter as claimed in claim 2, wherein The angle of the inner angle between the handle (2) and the blade (3) is 130°-150°.

4. A rotating blade assembly for a brush cutter as claimed in claim 2, wherein The material of the handle (2) and the blade (3) is metal.

5. A rotating blade assembly for a brush cutter as claimed in claim 1, wherein The positioning member includes a bolt (4), the tool rest (1) and the handle (2) are provided with a positioning hole (42), the bolt (4) passes through the positioning hole (42) and is threadedly connected with a nut (41).

6. A rotating blade assembly for a brush cutter as claimed in claim 1, wherein The mounting hole (5) is provided on the tool rest (1), and the hole diameter of the mounting hole (5) is 20mm-30mm.

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