Anti-winding mowing saw blade
By designing a protective cover and a guide grass-separating component on the lawnmower blade, the problem of weed entanglement is solved, ensuring stable rotation of the saw blade and improving mowing efficiency and work results.
Patent Information
- Application Number
- CN202520272536.2
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2025-02-20
- Publication Date
- 2025-12-05
- Estimated Expiration
- 2035-02-20
AI Technical Summary
During the mowing process, existing lawnmower blades often cause the cut grass to become entangled at the connection between the blade disc and the motor shaft, resulting in reduced blade disc rotation force and affecting mowing efficiency.
A protective cover structure was designed, including a fixed shell and a protective shell, with a guide weed separating component and a V-shaped protective plate. The guide block and arrow structure guide the weeds to prevent entanglement, and the limiting hole and limiting post ensure stable rotation of the saw blade. At the same time, the blade tilting design reduces the probability of weed contact.
It effectively prevents weeds from getting tangled, protects the saw blade from high-speed rotation, improves mowing efficiency, avoids the increased pressure from secondary cutting, and enhances work efficiency.
Smart Images
Figure CN223626417U_ABST
Abstract
Description
TECHNICAL FIELD
[0001] The utility model belongs to the technical field of grass cutting saw blade, especially relates to a kind of anti-winding grass cutting saw blade. BACKGROUND
[0002] The grass cutting blade is a disc-shaped saw blade with a mounting hole in the center, which is installed on a grass cutter and cuts weeds by rotating.
[0003] However, the existing grass cutting saw blade is prone to winding the weeds cut off at the connection between the cutter head and the motor shaft during grass cutting, which increases the pressure on the cutter head and reduces the rotation force of the cutter head, thereby affecting the grass cutting effect and the work efficiency. UTILITY MODEL CONTENT
[0004] The utility model aims at providing a kind of anti-winding grass cutting saw blade to solve the technical problems proposed in the background art.
[0005] To achieve the above object, the specific technical scheme of the utility model is as follows: an anti-winding grass cutting saw blade includes a saw blade body and a protective cover located outside the saw blade body, the protective cover is fixedly connected with the grass cutter, the saw blade body is fixedly connected with the motor shaft of the grass cutter, the protective cover includes a fixed shell and a protective shell, the fixed shell and the protective shell are fixedly connected by screws, one side between the fixed shell and the protective shell forms a grass cutting opening, and an accommodating cavity is formed inside the fixed shell and the protective shell, the saw blade body is located in the accommodating cavity, rotating shafts are rotatably connected to the middle parts of the opposite sides of the fixed shell and the protective shell through bearings, a protective plate is arranged on one side of the rotating shafts and located in the middle part of the grass cutting opening, a plurality of equally spaced guide grass separating assemblies are arranged on one side of the fixed shell and the protective shell, the saw blade body includes a cutter head, and four blades are arranged on the side wall of the cutter head in circumferential array.
[0006] Preferably, the surface of the fixed shell and the protective shell is provided with a first perforation in the center, and four fixed holes are arranged on the surface of the fixed shell in circumferential array around the first perforation.
[0007] Preferably, a plurality of orderly arranged connecting holes are arranged on the surface edge of the fixed shell and the protective shell, and a folded edge is arranged on the upper surface edge of the protective shell, and the upper surface of the folded edge is in contact with the bottom of the fixed shell.
[0008] Preferably, the surface of the rotating shaft is provided with a plurality of limiting holes arranged in a circumferential array, the upper and lower sides of the cutter head are provided with limiting columns corresponding to the limiting holes, the limiting columns are matched with the limiting holes in size, and the surface of the rotating shaft is provided with a second through hole at the middle part.
[0009] Preferably, the protective plate is of a V-shaped structure, and the size of the V-shaped opening of the protective plate is greater than the outer diameter of the rotating shaft.
[0010] Preferably, the guiding and separating assembly comprises an extension rod, and the end of the extension rod is provided with two symmetrically arranged guiding blocks, and the guiding blocks and the extension rod form an arrow structure.
[0011] Preferably, the middle part of the surface of the cutter head is provided with a mounting hole, and the end of the blade away from the cutter head is provided in a downwardly inclined structure.
[0012] The anti-winding grass cutting saw blade has the following advantages.
[0013] 1. The extension rod and the guiding block are matched, so that the weeds can be guided, supported and separated before cutting, the phenomenon of grass winding can be effectively avoided, the high-speed rotation of the saw blade body is protected, the V-shaped protective plate is arranged, the cut weeds are guided to both sides during cutting, the phenomenon that the rotation force of the saw blade body is reduced due to the winding of the weeds on the shaft and the cutting of the weeds is affected is prevented, the secondary cutting caused by the falling of the cut weeds to increase the pressure on the cutter head is avoided, and the working efficiency is greatly improved.
[0014] 2. The mounting hole is arranged, so that the cutter head can be fixedly connected with the motor shaft of the grass cutting machine, the end of the blade away from the cutter head is inclined downward, so that the probability of contact between the weeds and the cutter head during cutting can be reduced, and the phenomenon of grass winding is further avoided. BRIEF DESCRIPTION OF DRAWINGS
[0015] In order to more clearly illustrate the technical scheme of the embodiments of the present application, the following will briefly introduce the drawings needed to be used in the embodiments. It should be understood that the following drawings only show some embodiments of the present application, and should not be regarded as a limitation to the scope. For those skilled in the art, other related drawings can also be obtained without creative labor.
[0016] Figure 1 It is a schematic diagram of the overall structure of the present application.
[0017] Figure 2 It is an exploded view of Figure 1
[0018] Figure 3 The utility model discloses a fixed shell and cutter head's exploded view.
[0019] Marked explanation in drawing: 1, fixed shell, 2, protective shell, 3, extension rod, 4, guide block, 5, mowing mouth, 6, fixed hole, 7, cutter head, 8, blade, 9, flanging, 10, rotating shaft, 11, second perforation, 12, protective plate, 13, limiting hole, 14, limiting column, 15, first perforation, 16, mounting hole, 17, connecting hole. DETAILED DESCRIPTION
[0020] Hereinafter, only certain exemplary embodiments are simply described. As those skilled in the art can recognize, the described embodiments can be modified in various different ways without departing from the spirit or scope of the embodiments of the utility model. Therefore, the drawings and the description are considered to be exemplary in nature rather than limiting.
[0021] In the description of the embodiments of the utility model, it is understood that the orientation or positional relationship indicated by the terms "length", "vertical", "horizontal", "top", "bottom" and the like is based on the orientation or positional relationship shown in the drawings, and is only for the convenience of describing the embodiments of the utility model and simplifying the description, and therefore cannot be understood as indicating or implying that the indicated device or element must have a particular orientation, be constructed and operated in a particular orientation, and therefore cannot be understood as a limitation on the embodiments of the utility model.
[0022] In addition, the terms "first", "second" are only for the purpose of description, and cannot be understood as indicating or implying relative importance or implicitly indicating the number of the indicated technical features. Therefore, the features limited by "first", "second" can explicitly or implicitly include one or more of the features. In the description of the embodiments of the utility model, the meaning of "multiple" is two or more, unless otherwise specifically limited.
[0023] In the embodiments of the utility model, unless otherwise specifically defined and limited, the terms "mounting", "connection", "connection", "fixing" and the like should be understood in a broad sense, for example, can be fixedly connected, or can be detachably connected, or integrated; can be mechanically connected, or electrically connected, or communicated; can be directly connected, or indirectly connected through an intermediate medium, can be the communication or interaction relationship between two elements. For those skilled in the art, the specific meaning of the above terms in the embodiments of the utility model can be understood according to the specific circumstances.
[0024] The disclosure below provides many different embodiments or examples for implementing various implementations of the present application. In order to simplify the disclosure of the present application, the components and settings of specific examples are described below. Of course, they are only examples and the purpose is not to limit the present application. In addition, the present application can refer to the same reference numerals and / or reference letters in different examples, and such repetition is for the purpose of simplification and clarity, which does not indicate the relationship between the various embodiments and / or settings discussed.
[0025] In order to better understand the purpose, structure and function of the present application, the present application will be further described in detail below in combination with the drawings.
[0026] As shown in Figures 1-3 The present application is a kind of anti-winding grass saw blade, including saw blade body and the protective cover located in the outer side of saw blade body, protective cover and grass trimmer fixed connection, saw blade body and grass trimmer motor shaft fixed connection, protective cover includes fixed shell 1 and protective shell 2, the surface of fixed shell 1 and protective shell 2 is all provided with the first perforation 15, the surface of fixed shell 1 is provided with four fixed holes 6 that are circumferentially arrayed at the periphery of first perforation 15, the diameter of first perforation 15 is greater than the diameter of grass trimmer motor shaft, so that motor shaft can easily penetrate protective cover, will not cause interference to the rotation of motor shaft, by the setting of fixed hole 6, fixed shell 1 can be fixedly connected with grass trimmer by screw.The fixed shell 1 and protective shell 2 are fixedly connected by screw, the surface edge of fixed shell 1 and protective shell 2 is all provided with a plurality of orderly distributed connecting holes 17, and the upper surface edge of protective shell 2 is provided with folding edge 9, the upper surface of folding edge 9 is in contact with the bottom of fixed shell 1, when installing the grass saw blade, first, fixed shell 1 is fixedly connected with grass trimmer, then saw blade body is connected with fixed shell 1 and fixed on grass trimmer motor shaft, finally, protective shell 2 is covered on the other side of saw blade body, at this time, the folding edge 9 of protective shell 2 will be in contact with the surface of fixed shell 1, and fixed shell and protective shell 2 are fixedly connected by screw, at this time, saw blade body can rotate freely in fixed shell 1 and protective shell 2 along with motor shaft.
[0027] The fixed shell 1 and the protective shell 2 are formed with a mowing opening 5 on one side, and an accommodating cavity is formed between the fixed shell 1 and the protective shell 2, the saw blade body is located in the accommodating cavity, the fixed shell 1 and the protective shell 2 are rotatably connected with a rotating shaft 10 at the middle part of the opposite side, the surface of the rotating shaft 10 is provided with a plurality of limiting holes 13 arranged in a circumferential array, the upper and lower sides of the cutter head 7 are provided with limiting columns 14 corresponding to the limiting holes 13, the size of the limiting column 14 is consistent with the size of the limiting hole 13, and the middle part of the surface of the rotating shaft 10 is provided with a second perforation 11, through the arrangement of the limiting column 14 and the limiting hole 13, when the saw blade body is installed, the limiting column 14 on the cutter head 7 is inserted into the corresponding limiting hole 13, and since the rotating shaft 10 is rotatably connected with the fixed shell 1 and the protective shell 2 through the bearing, when the motor shaft drives the saw blade body to rotate, the saw blade body drives the rotating shaft 10 to rotate, and does not interfere with the rotation of the saw blade body. The middle part of the rotating shaft 10 on one side is provided with a protective plate 12 located in the mowing opening 5, the protective plate 12 is a V-shaped structure, and the size of the V-shaped opening of the protective plate 12 is greater than the outer diameter of the rotating shaft 10, through the arrangement of the V-shaped protective plate 12, the cut grass can be guided to both sides during mowing, preventing the grass from winding around the shaft, which reduces the rotating force of the saw blade body and affects mowing, and avoiding the secondary cutting caused by the falling of the cut grass to increase the pressure on the cutter head 7.
[0028] The fixed shell 1 and the protective shell 2 are provided with a plurality of equally spaced guide grass separating assemblies on one side of the mowing opening 5, the guide grass separating assembly comprises an extension rod 3, the end of the extension rod 3 is provided with two symmetrically distributed guide blocks 4, and an arrow structure is formed between the two guide blocks 4 and the extension rod 3, through the cooperation between the extension rod 3 and the guide block 4, the grass can be guided, supported and separated before mowing, which can effectively avoid the phenomenon of grass winding and protect the high-speed rotation of the saw blade body.
[0029] The saw blade body comprises a cutter head 7, and the side wall of the cutter head 7 is provided with four circumferentially arrayed blades 8. The middle part of the surface of the cutter head 7 is provided with a mounting hole 16, and the end of the blade 8 away from the cutter head 7 is provided with a downward inclined structure. Through the arrangement of the mounting hole 16, the cutter head 7 can be fixedly connected with the mower motor shaft, and through the arrangement of the downward inclined structure of the end of the blade 8 away from the cutter head 7, the probability of contact between the grass and the cutter head 7 during mowing can be reduced, and the phenomenon of grass winding is further avoided.
[0030] It can be understood that the utility model is described through some embodiments, and the person skilled in the art knows that various changes or equivalent replacements can be made to these features and embodiments without departing from the spirit and scope of the utility model. In addition, under the guidance of the utility model, these features and embodiments can be modified to adapt to specific conditions and materials without departing from the spirit and scope of the utility model. Therefore, the utility model is not limited by the specific embodiments disclosed herein, and all embodiments falling within the scope of the claims of the application belong to the scope protected by the utility model.
Claims
1. An anti-wrap lawnmower blade, characterized by: Including saw blade body and located outside saw blade body protective cover, the protective cover is fixedly connected with the mower, the saw blade body is fixedly connected with the mower motor shaft, wherein, The protective cover includes a fixed shell (1) and a protective shell (2), the fixed shell (1) and the protective shell (2) are fixedly connected by screws, one side of the fixed shell (1) and the protective shell (2) forms a mowing opening (5), and the fixed shell (1) and the protective shell (2) form an accommodating cavity inside, the saw blade body is located in the accommodating cavity, the fixed shell (1) and the protective shell (2) are rotatably connected with a rotating shaft (10) at the middle part of the opposite side, and the rotating shaft (10) is provided with a protective plate (12) at the middle part of the mowing opening (5) on one side, and the fixed shell (1) and the protective shell (2) are provided with a plurality of equally spaced guide grass separating assemblies on one side of the mowing opening (5). The saw blade body includes a cutter head (7), and the side wall of the cutter head (7) is provided with four blades (8) arranged in a circumferential array.
2. A kickback resistant saw blade according to claim 1, wherein: The surface of the fixed shell (1) and the protective shell (2) is provided with a first perforated hole (15), and the surface of the fixed shell (1) is provided with four fixed holes (6) arranged in a circumferential array outside the first perforated hole (15).
3. The anti-wrap saw blade of claim 1, wherein: The surface edge of the fixed shell (1) and the protective shell (2) is provided with a plurality of orderly distributed connecting holes (17), and the upper surface edge of the protective shell (2) is provided with a folding edge (9), and the upper surface of the folding edge (9) is in contact with the bottom of the fixed shell (1).
4. The kickback resistant saw blade of claim 1, wherein: The surface of the rotating shaft (10) is provided with a plurality of circumferentially arranged limiting holes (13), and the upper and lower sides of the cutter head (7) are provided with limiting columns (14) corresponding to the limiting holes (13), the size of the limiting column (14) is consistent with the size of the limiting hole (13), and the surface of the rotating shaft (10) is provided with a second perforated hole (11) at the middle part.
5. The kickback resistant saw blade of claim 1, wherein: The protective plate (12) is a V-shaped structure, and the size of the V-shaped opening of the protective plate (12) is greater than the outer diameter of the rotating shaft (10).
6. The kickback resistant saw blade of claim 1, wherein: The guide grass separating assembly includes an extension rod (3), and the end of the extension rod (3) is provided with two symmetrically distributed guide blocks (4), and the two guide blocks (4) and the extension rod (3) form an arrow structure.
7. The kickback resistant saw blade of claim 1, wherein: The surface of the cutter head (7) is provided with a mounting hole (16) at the middle part, and the end of the blade (8) away from the cutter head (7) is provided as a downward inclined structure.