CN118176916A - Brush cutter head - Google Patents
Brush cutter head Download PDFInfo
- Publication number
- CN118176916A CN118176916A CN202410623712.2A CN202410623712A CN118176916A CN 118176916 A CN118176916 A CN 118176916A CN 202410623712 A CN202410623712 A CN 202410623712A CN 118176916 A CN118176916 A CN 118176916A
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- CN
- China
- Prior art keywords
- blade
- protection
- radiation
- brush cutter
- shaft
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Pending
Links
- 230000005855 radiation Effects 0.000 claims abstract description 36
- 230000001681 protective effect Effects 0.000 claims abstract description 28
- 210000004907 gland Anatomy 0.000 claims description 6
- 241000196324 Embryophyta Species 0.000 abstract description 7
- 238000012423 maintenance Methods 0.000 description 3
- 238000013461 design Methods 0.000 description 2
- 238000009966 trimming Methods 0.000 description 2
- 244000025254 Cannabis sativa Species 0.000 description 1
- 239000004677 Nylon Substances 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000005540 biological transmission Effects 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 238000009434 installation Methods 0.000 description 1
- 230000007774 longterm Effects 0.000 description 1
- 238000000034 method Methods 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 229920001778 nylon Polymers 0.000 description 1
- 238000013138 pruning Methods 0.000 description 1
- 238000012216 screening Methods 0.000 description 1
- 238000006467 substitution reaction Methods 0.000 description 1
Landscapes
- Harvester Elements (AREA)
Abstract
The brush cutter head comprises a shaft connecting part connected with the gear head, a blade is arranged below the shaft connecting part, the upper part of the shaft connecting part is connected with the gear head, the gear head is connected with an operating rod, and a protective disc is arranged between the blade and the shaft connecting part; the outer edge of the protection disc is provided with radiation strips, outer end strip bodies of the radiation strips all tend to the outer side of the blade to bend and extend to form a protection area at the periphery of the blade rotary cutting area, and an outer end gap between the radiation strips in the protection area is used for an operation object to enter the blade rotary cutting area. The invention adopts the protection disc, the outer ends of which bend towards the outer sides of the blades to form the protection areas, so that the radiation strips of the protection areas of the trees are blocked outside the blade rotary cutting areas when the trees are rotary-cut, the trees are not damaged, and the outer end gaps between the radiation strips of the protection areas can be used for allowing the weeds, shrubs and branch tree forks to enter the blade rotary cutting areas and be rotary-cut by the blades, thereby having ingenious structure, improving the garden working efficiency and reducing the corresponding operation cost.
Description
Technical Field
The invention relates to a machine head of a garden machine, in particular to a machine head of a brush cutter, and belongs to the technical field of IPC A01D.
Background
In garden maintenance work, the brush cutter is an indispensable tool, and can efficiently trim and clean the brush, and keep the environment clean and beautiful. The working head of the brush cutter is designed variously to adapt to different operation demands. The working heads of the strip-shaped blades and the disc-shaped blades are widely used due to the efficient cutting capability, and the working heads of the nylon wires are suitable for environments with complex terrains and obstacles so as to ensure the safety of operation.
However, the existing brush cutter still has some problems in practical application. For example, when working with a working head having a bar or disk blade, it is often difficult for an operator to precisely control the machine, especially when the operator needs to cut around the tree to trim the weeds or shrubs around the tree, and it is easy for the working head to touch the tree while trimming to cut the tree by mistake, thereby affecting the growth thereof. In addition, some tree roots can grow up some little bifurcation, some joint parts on the tree body can also produce some little branches, when being close to the part of the tree with bifurcation or branch, the strip blade or the disk blade really has difficulty in guaranteeing to prune the cutting and guarantee not to cut the tree simultaneously. And some shrubs or trees are very flexible, the strip-shaped blades or the disc-shaped blades cannot cut off the shrubs or trees at one time when being trimmed, so that the branches of the shrubs or trees are inclined, and the branches of the shrubs or trees can rebound after the working head does not exert force any more, so that the grass cutting head is subjected to external force, the control of a user on the grip of the brush cutter is greatly influenced, the areas cannot be effectively cleaned, and the problems not only influence the efficiency of garden work, but also increase the maintenance cost.
Disclosure of Invention
The invention aims to solve the problem that the existing brush cutter is used for removing weeds, shrubs or branches of trees which are close to the trees except the trees when the existing brush cutter is close to the trees without damaging the tree bodies, and provides a brush cutter head with protective measures, which is easier to cut the branches of the shrubs or the trees.
The technical scheme for solving the problems is as follows:
The brush cutter aircraft nose, the aircraft nose includes the axle that links to each other with the gear head and links to each other, and the blade is installed to axle below that links to each other with the gear head to axle even portion top, and the gear head links to each other with the action bars again, its characterized in that: a protective disc is arranged between the blade and the shaft connecting part; the outer edge of the protection disc is provided with radiation strips, outer end strip bodies of the radiation strips all tend to the outer side of the blade to bend and extend to form a protection area at the periphery of the blade rotary cutting area, and an outer end gap between the radiation strips in the protection area is used for an operation object to enter the blade rotary cutting area.
Preferably, the projection of the inner end gap between the inner ends of the radiation strips is positioned in the blade rotary cutting area, and the inner end gap is communicated with the outer end gap positioned in the protection area to form a limit operation area for an operation object to lean in.
Preferably, a chain or rope for preventing the protective disc from rotating is also connected between the gear head and the protective disc, one end of the chain is fixed on the side edge of the gear head, and the other end of the chain is fixed on the protective disc.
Preferably, a partial housing body extends over the housing of the gear head to the protective disk and the protective disk is fastened to the extended partial housing body.
Preferably, the shaft connecting part comprises a main shaft sleeve which is connected with a shaft cap in a shaft groove of the end part of the main shaft for rotating the blade and is locked at the outer side of the end part of the main shaft, a protective disc and a snap spring behind the bearing are sequentially arranged on the shaft pin at the other end of the main shaft, a gland which is used for shielding the bearing and the snap spring and is connected with the protective disc at the inner bottom is arranged at the outer side of the bearing and the snap spring, the shaft pin part of the main shaft, which is exposed out of the gland, is sleeved with the blade, and finally is sleeved with a self-locking nut to lock the blade on the shaft pin of the main shaft.
Preferably, the radiation strip is a flat narrow edge strip, and the gap size of the protection area formed at the outer end of the radiation strip is equal to the width of the radiation strip.
The beneficial effects of the invention are as follows:
Compared with the prior art, the protective disc with the radiation strips is adopted, the outer ends of the radiation strips bend towards the outer sides of the blades to form the protective area, so that the radiation strips of the protected area are blocked outside the blade rotary cutting area when the weeds, shrubs and branches around the trees are cut, the trees cannot be damaged, the outer end gaps between the radiation strips in the protective area can be used for the weeds, shrubs and branch forks to enter the blade rotary cutting area to be cut by the blades, the structure is ingenious, the screening can be realized through the intervals of the radiation strips, workers can work the surrounding areas of the trees in a wide way during operation, the garden work efficiency is obviously improved, and the corresponding operation cost is also reduced.
Drawings
In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings used in the description of the embodiments or the prior art will be briefly described below. Like elements or portions are generally identified by like reference numerals throughout the several figures. In the drawings, elements or portions thereof are not necessarily drawn to scale.
FIG. 1 is a schematic diagram of the structure of the present invention;
FIG. 2 is a schematic view of the structure of FIG. 1 at another angle;
fig. 3 is an exploded view of the structure of fig. 1.
Detailed Description
The invention is further described in detail below with reference to the accompanying drawings.
Embodiments of the technical scheme of the present invention will be described in detail below with reference to the accompanying drawings. The following examples are merely illustrative of the present invention in that numerous specific details are set forth in order to provide a more thorough understanding of the present invention. However, it will be apparent to one skilled in the art that the present invention may be practiced without one or more of these specific details. In these examples, some technical features known in the art have not been described in order to avoid obscuring the present invention.
It should be understood that the present invention may be embodied in various forms and should not be construed as limited to the embodiments set forth herein, but rather as an example, without limiting the scope of the invention.
In addition, it is noted that unless otherwise indicated, technical or scientific terms used herein should be given the ordinary meaning as understood by one of ordinary skill in the art to which this application pertains.
Referring to fig. 1 to 3, as a key component of a brush cutter for a garden maintenance tool, the brush cutter is designed to improve the working efficiency and ensure the working installation, and comprises a shaft connecting part 2 connected with a gear head 1, a blade 3 is accurately abutted and installed below the shaft connecting part 2, the upper part of the shaft connecting part 2 is connected with the gear head 1, and the gear head 1 is connected with an operating rod (not shown) to transmit the force synchronization of an operator, so that the brush cutter is accurately controlled.
In order to protect trees and shrubs from unnecessary damage during the pruning process, a protective tray 4 is particularly incorporated into the design of the handpiece. A protective disc 4 is arranged between the blade 3 and the shaft connecting part 2; the outer edge of the protection disc 4 is provided with radiation strips 41, the outer end strip bodies 42 of the radiation strips 41 bend towards the outer side of the blade 3 to form a protection area B at the periphery of the blade rotary cutting area A, and the outer end gaps 43 between the radiation strips 41 of the protection area B are used for an operation object to enter the blade rotary cutting area A. In this protection area B, the design requirement of the outer end gap 43 between the radiation strips 41 is that the straight line connecting the two sides of the gap 43 cannot fall into the blade whirling area a, and in this range, the gap can be maximally set to allow the operation object to smoothly enter the blade whirling area a, and at the same time, the operation safety can be ensured.
Prior to implementation, blade 3 is typically preferably selected as a strip blade. Of course, a discshaped blade may be used, but the discshaped blade cannot be used because of the protective disc 4 when further trimming the branches extending from the sides of the tree to the root of the branches. If a strip-shaped blade is selected, after the redundant branches are cut in a rotating mode, when the root of the branches needs to be further trimmed, the whole machine head angle is perpendicular to the root of the branches, namely, the blade rotation cutting area A is perpendicular to the root of the branches, then the operating rod is controlled to touch the root of the branches in a mode of pressing down in a plurality of times of light touch, and therefore, the part of the root of the branches, which is exposed out, can enter the blade rotation cutting area A from the lower opening area of the blade feeding rotation cutting area A to be trimmed by the blade rotation cutting.
In practice, the radiation strips 41 provided on the outer periphery of the protective disk 4 may be provided only on the work running surface of the handpiece. In addition, the protective disk is preferably fixed and not rotated during operation, so that the operation objects can smoothly enter when the machine head caters for weeds, shrubs and tree branches.
Further, as an improvement of the present invention, an inner end gap 45 between inner ends 44 of the radiation bars 41 is projected in the blade whirling region a, and the inner end gap 45 communicates with an outer end gap 43 in the protection region B to form a limit working region 43-45 for a working object to lean on.
In this embodiment, the limiting operation areas 43-45 can clamp weeds, shrubs, tree branches and the like, when the blade 3 in the blade rotary cutting area a rotates to the area, the inner ends of the radiation strips 41 on two sides of the limiting operation areas 43-45 and the side edges of the radiation strips 41 on the outer ends are limited, and when the blade 3 can be rotary cut to the surface of an operation object, the operation object cannot incline along with the rotary cutting force of the blade 3, so that the blade 3 can conveniently and smoothly cut the operation object in rotary cutting mode.
Further, as an improvement of the invention, a chain 5 or a rope for preventing the protection disk 4 from rotating is connected between the gear head 1 and the protection disk 4, and one end of the chain 5 or the rope is fixed on the side edge of the gear head 1, and the other end is fixed on the protection disk 4.
In this embodiment, if the gear head 1 adopts a conventional structure, from the market or self-made, after the gear head 1 is provided with the protection disc 4, the protection disc 4 can rotate along with the transmission of the gear head 1 during operation, and the protection disc 4 can be conveniently positioned to provide a pulling force through the arrangement of the chain 5, so that the gear head has strength which is not broken due to the influence of external force, and the long-term connection between the two is ensured.
Further, as an improvement of the present invention, a part of the housing body is extended onto the shield plate 4 on the housing of the gear head 1 and the shield plate 4 is fixed to the extended part of the housing body.
In the embodiment, the cover body is connected with the protection disc 4, the inside of the gear head 1 is driven to the blade 3, and the purpose that the protection disc 4 is not in moving fit with the rotary cutting area A of the blade 3 can be well achieved.
Further, as an improvement of the invention, the shaft connecting part 2 comprises a main shaft sleeve 23 which is deeply connected with a shaft cap 22 in a shaft groove at the end part of a main shaft 21 for rotating the blade 3 and is locked at the outer side of the end part of the main shaft 21, a protective disc 4 and a snap spring 7 behind the bearing 6 are sequentially arranged on a shaft pin 211 at the other end of the main shaft 21, a gland 8 which shields the bearing 6 and the snap spring 7 at the inner bottom and is connected with the protective disc 4 is arranged at the outer side of the bearing 6 and the snap spring 7, the shaft pin part of the main shaft, which is exposed out of the gland 8, is sleeved with the blade 3, and finally is sleeved with a self-locking nut 9 to lock the blade 3 on the shaft pin 211.
In the present embodiment, the spindle pin 211 is connected to the driving pin of the gear head 1 in the end slot of the spindle 21 to receive the driving rotational force, and the blade 3 is mounted on the spindle pin 211, so that the gear head 1 can indirectly drive the blade 3 to rotate. Since the bearing 6 is provided, the rotation of the blade 3 is not affected by the guard disk 4 even if the rotation thereof is restricted by an external force during operation.
Further, as an improvement of the present invention, the radiation strip 41 is a flat narrow edge strip, and the size of the gap 43 of the protection area formed at the outer end of the radiation strip 41 is equal to the width of the radiation strip 41.
In the embodiment, the safety performance for the handpiece is also better when the gap 43 is relatively wide for radiation 41. Of course with the exception of some other special cases.
Finally, it should be noted that: the above embodiments are only for illustrating the technical solution of the present invention, and not for limiting the same; although the invention has been described in detail with reference to the foregoing embodiments, it will be understood by those of ordinary skill in the art that: the technical scheme described in the foregoing embodiments can be modified or some or all of the technical features thereof can be replaced by equivalents; such modifications and substitutions do not depart from the spirit of the invention, and are intended to be included within the scope of the appended claims and description.
Claims (6)
1. The brush cutter aircraft nose, the aircraft nose includes the axle that links to each other with the gear head and links to each other, and the blade is installed to axle below that links to each other with the gear head to axle even portion top, and the gear head links to each other with the action bars again, its characterized in that: a protective disc is arranged between the blade and the shaft connecting part; the outer edge of the protection disc is provided with radiation strips, outer end strip bodies of the radiation strips all tend to the outer side of the blade to bend and extend to form a protection area at the periphery of the blade rotary cutting area, and an outer end gap between the radiation strips in the protection area is used for an operation object to enter the blade rotary cutting area.
2. A brush cutter head according to claim 1, wherein: the projection of the inner end gap between the inner ends of the radiation strips is positioned in the blade rotary cutting area, and the inner end gap is communicated with the outer end gap positioned in the protection area to form a limit operation area for an operation object to lean in.
3. A brush cutter head according to claim 1, wherein: a chain or rope for preventing the protective disc from rotating is also connected between the gear head and the protective disc, one end of the chain is fixed on the side edge of the gear head, and the other end of the chain is fixed on the protective disc.
4. A brush cutter head according to claim 1, wherein: a partial cover body extends out of the gear head cover to the protective disk and the protective disk is fixed on the extended partial cover body.
5. A brush cutter head according to claim 1, wherein: the shaft connecting part comprises a main shaft sleeve which is connected with a shaft cap in a shaft groove at the end part of the main shaft and used for enabling the blade to rotate, the outer side of the end part of the main shaft is locked, a protective disc and a snap spring behind the bearing are sequentially arranged on the shaft pin at the other end of the main shaft, a gland which is used for shielding the bearing and the snap spring and is connected with the protective disc at the inner bottom is further arranged at the outer side of the bearing and the snap spring, the shaft pin part of the main shaft, which is exposed out of the gland, is sleeved with the blade, and finally a self-locking nut is sleeved on the shaft pin of the main shaft to lock the blade on the shaft pin of the main shaft.
6. A brush cutter head according to claim 1, wherein: the radiation strip is a flat narrow edge strip, and the size of a gap of a protection area formed at the outer end of the radiation strip is equal to the width of the radiation strip.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202410623712.2A CN118176916A (en) | 2024-05-20 | 2024-05-20 | Brush cutter head |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202410623712.2A CN118176916A (en) | 2024-05-20 | 2024-05-20 | Brush cutter head |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN118176916A true CN118176916A (en) | 2024-06-14 |
Family
ID=91393408
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202410623712.2A Pending CN118176916A (en) | 2024-05-20 | 2024-05-20 | Brush cutter head |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN118176916A (en) |
-
2024
- 2024-05-20 CN CN202410623712.2A patent/CN118176916A/en active Pending
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| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination |