Mowing knife with bent flail knives on two surfaces

Abstract

The utility model relates to the technical field of mowing cutters, in particular to a mowing cutter with bent flail knives on two sides. Comprising a saw blade body, a protective cover and flail knives, flail knives are mounted on the saw blade body, and the saw blade body and the flail knives form a plurality of sections of cutting of weeds; the saw blade body is further provided with an installation hole and a protection cover, and the installation hole is formed in the protection cover. By arranging the saw blade body and the flail knife, two-section cutting or three-section cutting of weeds is formed by the saw blade body and the flail knife, if the weeds need to be cut into a plurality of sections, one-time cutting can be achieved, and therefore the efficiency of weed cutting is greatly improved; due to the arrangement of the flail knife, the saw blade can be placed at a certain distance from the ground during use, and when the flail knife is arranged on the bottom surface of the saw blade body, roots of weeds can be cut through the flail knife, so that the saw blade body is prevented from touching stones, the saw blade body can be effectively protected, and the service life of the saw blade body is prolonged.

Description

Technical Field

[0001] The utility model relates to the technical field of mowing tools, in particular to a mowing tool with bent fling blades on both sides. Background Art

[0002] A lawn mower is a tool used in conjunction with a lawn mower. When in use, it can be used to cut weeds, artificial lawns, small branches, etc. However, the existing lawn mower generally has a circular or strip-shaped structure (a blade or tooth is provided at the end of the blade), and a mounting hole is provided in the middle (the mounting hole is used to connect the rotating shaft, and the rotating shaft of the motor or internal combustion engine can drive the blade to rotate and then cut the weeds). The main problems of the lawn mower of this structure when in use are: (1) the cutting efficiency is low, and it can only cut through a single layer of the blade (if it is necessary to cut several sections of weeds, it is necessary to cut several times); (2) the blade needs to be close to the ground when used (to facilitate cutting the lower part of the weeds), and it is easy to touch the stone, causing the blade to be damaged; (3) because the rotating shaft of the motor or internal combustion engine is directly installed on the mounting hole, the weeds are easy to wrap around the rotating shaft, causing the rotating shaft to get stuck, jammed, or damage the motor or internal combustion engine.

[0003] Based on the above problems, we propose a mowing knife with bent fling blades on both sides. Utility Model Content

[0004] In view of the shortcomings of the prior art, the utility model provides a lawn mower with bent fling blades on both sides. After the improvement, the saw blade can effectively solve the problems raised in the above-mentioned background technology.

[0005] The technical solution of the utility model is:

[0006] A mowing blade with bent fling blades on both sides, comprising a saw blade body, a protective cover and the fling blades;

[0007] The saw blade body is provided with a fling knife, and the saw blade body and the fling knife form a plurality of sections of weed cutting;

[0008] The saw blade body is also provided with a mounting hole and a protective cover, and the mounting hole is arranged inside the protective cover.

[0009] Furthermore, the mounting hole is arranged at the center of the saw blade body, the mounting hole is a through hole structure, the protective cover is welded to one end of the mounting hole of the saw blade body connected to the rotating shaft, and the protective cover is a hollow structure.

[0010] Furthermore, the fling knives are mounted on the top and bottom surfaces of the saw blade body by bolts.

[0011] Furthermore, the fling knives are mounted on the top surface or the bottom surface of the saw blade body by bolts.

[0012] Furthermore, the outer circle of the saw blade body is provided with tooth openings.

[0013] Furthermore, the fling knife is arranged close to the tooth opening.

[0014] Furthermore, the swing knife is bent, one end of the swing knife is a fixed end, which is installed on the saw blade body by bolts, and the other end of the swing knife is a free end, which is away from the saw blade body and inclined to the saw blade body.

[0015] Furthermore, a blade is provided on the side of the free end of the swing knife.

[0016] Furthermore, a knife-flinging hole is also provided on the saw blade body.

[0017] Furthermore, the saw blade body and the swing knife are both made of alloy steel.

[0018] The beneficial effects of the utility model are:

[0019] (1) The utility model is provided with a saw blade body and a fling knife, which form a two-stage or three-stage cutting of weeds. If it is necessary to cut the weeds into several sections, it can be achieved at one time, thereby greatly improving the efficiency of weed cutting;

[0020] (2) Due to the provision of the swing knife, the saw blade can be placed at a certain distance from the ground when in use. Since the swing knife is provided on the bottom surface of the saw blade body, the roots of weeds can be cut by the swing knife, thereby preventing the saw blade body from touching stones, which can effectively protect the saw blade body. When the swing knife touches a stone, it rotates to another side to prevent hard collision, thereby extending its service life.

[0021] (3) By providing a protective cover, after the rotating shaft is connected to the saw blade, the protective cover can surround the rotating shaft, making it difficult for weeds to be wrapped around the rotating shaft, reducing power loss, and at the same time, protecting the motor and the rotating shaft. BRIEF DESCRIPTION OF THE DRAWINGS

[0022] Figure 1 It is a schematic diagram of the structure of the utility model;

[0023] Figure 2 It is a structural schematic diagram of another side of the utility model.

[0024] In the figure, 1, saw blade body; 2, protective cover; 3, swing knife; 4, mounting hole; 5, tooth mouth; 6, fixed end; 7, free end; 8, blade; 9, swing knife hole. DETAILED DESCRIPTION

[0025] The specific implementation of the utility model is further described below in conjunction with the accompanying drawings:

[0026] like Figure 1-2 As shown,

[0027] A lawn mower with bent fling blades on both sides, comprising a saw blade body 1, a protective cover 2 and a fling blade 3; the saw blade body 1 is rotatably connected to the fling blade 3 by bolts, and the saw blade body 1 and the fling blade 3 form several sections of weed cutting; the saw blade body 1 is also provided with a mounting hole 4 and a protective cover 2, and the mounting hole 4 is arranged inside the protective cover 2; in this embodiment, the arrangement of the fling blade 3 can form several sections of weed cutting with the saw blade body 1, and when it is necessary to cut several sections of weeds, it can be achieved at one time, thereby improving the cutting efficiency; moreover, it also effectively avoids the need for the saw blade body 1 to be used in contact with the ground, and prevents the saw blade body 1 from easily touching the stones on the ground and being damaged; in addition, the arrangement of the protective cover 2 can also prevent weeds from being wound around the rotating shaft, thereby ensuring the use quality of the lawn mower.

[0028] As a preferred embodiment; the mounting hole 4 is arranged at the center of the saw blade body 1, the mounting hole 4 is a through hole structure, the protective cover 2 is welded to one end of the mounting hole 4 of the saw blade body 1 connected to the rotating shaft, and the protective cover 2 is a hollow structure; it can be understood that the protective cover 2 is only arranged on one side of the saw blade body 1, and can surround the rotating shaft. In addition, the shape of the mounting hole 4 (arranged in the middle of the saw blade body 1) and the structural setting (through hole structure) enable the saw blade body 1 to be evenly stressed, further increasing the cutting strength; moreover, the through hole structure enables the rotating shaft to pass through the saw blade body 1 when installing the rotating shaft, thereby enhancing the firmness of the installation.

[0029] As a preferred embodiment; the fling knives 3 are mounted on the top and bottom surfaces of the saw blade body 1 by bolts; it can be understood that the fling knives 3 of this structure are provided on the top and bottom surfaces of the saw blade body 1, so that three-section cutting of weeds can be achieved in one cutting; in addition, the fling knives 3 are arranged on the top and bottom surfaces of the saw blade body 1 at equal intervals and angles, with the aim of improving the efficiency during cutting and obtaining a good dynamic balance during rotation.

[0030] As a preferred embodiment, the fling knives 3 are all mounted on the top or bottom surface of the saw blade body 1 by bolts. It can be understood that the fling knives 3 of this structure are provided on the top or bottom surface of the saw blade body 1, so that two sections of weeds can be cut in one cut. In addition, the fling knives 3 are arranged on the top or bottom surface of the saw blade body 1 at equal intervals and angles, in order to improve the efficiency during cutting and the dynamic balance during rotation.

[0031] It is worth mentioning that the swing knife 3 is not fixedly installed, but can rotate freely with the bolt as the center (the bolt is not completely tightened to swing knife 3, and the threaded end of the bolt is welded and fixed to one end face of the nut). The working principle is that it opens under the action of centrifugal force, and rotates back into the saw blade body 1 when encountering hard objects.

[0032] As a preferred embodiment, the outer circumference of the saw blade body 1 is provided with a tooth opening 5. By providing the tooth opening 5, the sharpness during cutting can be improved and the cutting effect can be improved.

[0033] As a preferred embodiment, the swing knife 3 is arranged close to the tooth mouth 5. The purpose of this design is to enable the swing knife 3 to better cooperate with the saw blade body 1 for cutting, and the free end 7 of the swing knife 3 extends a greater distance, thereby improving the cutting effect.

[0034] As a preferred embodiment; the swing knife 3 is bent, one end of the swing knife 3 is a rotatable fixed end 6, which is installed on the saw blade body 1 by bolts, and the other end of the swing knife 3 is a free end 7, and the free end 7 of the swing knife 3 is away from the saw blade body 1 and is tilted with the saw blade body 1; the tilted swing knife 3 can reduce resistance, not only can better cut weeds, but also is not easy to break, and prolongs the service life. In addition, when the swing knives 3 are set on both sides of the saw blade body 1, they should be symmetrically arranged with the saw blade body 1 as the center, so that the swing knives 3 can expand outward to increase the cutting range.

[0035] As a preferred embodiment, a blade 8 is provided on the side of the free end 7 of the fling knife 3; blades 8 may be provided on both sides of the free end 7 of the fling knife 3, so that cutting can be performed in both forward and reverse rotations.

[0036] As a preferred embodiment; a swing knife hole 9 is also provided on the saw blade body 1; it can be understood that the swing knife 3 of the utility model is taken out from the saw blade body 1, that is, taken out at the position of the swing knife hole 9, which can effectively reduce the weight of the saw blade body 1, improve the use effect and reduce the cost; in addition, each swing knife hole 9 of the present application can take out two (or several) swing knives 3, and the extra swing knives 3 can be kept as spare, and the cost is further reduced.

[0037] As a preferred embodiment, the saw blade body 1 and the swing knife 3 are both made of alloy steel. By using alloy steel material, the hardness and toughness of the saw blade body 1 and the swing knife 3 are further enhanced, thereby improving the use quality and life of the lawn mower.

[0038] The working principle of the utility model is as follows: the rotating shaft of the motor or internal combustion engine is connected to the mounting hole 4, the protective cover 2 can surround the rotating shaft, the fling knife 3 is taken out from the fling knife hole 9 and bent and mounted on the saw blade body 1, and when cutting weeds, the top fling knife 3, the bottom fling knife 3 and the saw blade body 1 can form a three-stage cutting, thereby improving the use effect of the lawn mower.

[0039] It should be pointed out that the main problems existing in the prior art are: low cutting efficiency, and cutting can only be performed through a single-plane sheet;

[0040] Therefore, through the improvement of the present application, the saw blade body 1 and the flail 3 form a two-stage or three-stage cutting of the weeds. If the weeds need to be cut into several sections, it can be achieved at one time, thereby greatly improving the efficiency of weed cutting.

[0041] The above implementation modes are merely descriptions of the preferred implementation modes of the present invention, and are not intended to limit the scope of the present invention. Without departing from the design spirit of the present invention, various modifications and improvements made to the technical solutions of the present invention by ordinary engineering and technical personnel in the field shall fall within the protection scope determined by the claims of the present invention.

Claims

1. A lawn mower with bent blades on both sides, characterized in that: It includes a saw blade body, a protective cover and a fling knife; The saw blade body is provided with a fling knife, and the saw blade body and the fling knife form a plurality of sections of weed cutting; The saw blade body is also provided with a mounting hole and a protective cover, and the mounting hole is arranged inside the protective cover.

2. A lawn mower with bent blades on both sides according to claim 1, characterized in that: The mounting hole is arranged at the center of the saw blade body, and the mounting hole is a through hole structure. The protective cover is welded to one end of the mounting hole of the saw blade body connected to the rotating shaft, and the protective cover is a hollow structure.

3. A lawn mower with bent fling blades on both sides according to claim 2, characterized in that: The fling knives are mounted on the top and bottom surfaces of the saw blade body by bolts.

4. A lawn mower with bent fling blades on both sides according to claim 3, characterized in that: The fling knives are all mounted on the top surface or the bottom surface of the saw blade body by bolts.

5. A lawn mower with bent fling blades on both sides according to claim 4, characterized in that: The outer circle of the saw blade body is provided with tooth openings.

6. A lawn mower with bent fling blades on both sides according to claim 5, characterized in that: The fling knife is arranged close to the tooth opening.

7. A lawn mower with bent blades on both sides according to claim 6, characterized in that: The swing knife is bent, one end of the swing knife is a rotating fixed end, which is installed on the saw blade body by bolts, and the other end of the swing knife is a free end, which is away from the saw blade body and inclined to the saw blade body.

8. A lawn mower with bent blades on both sides according to claim 7, characterized in that: A blade is arranged on the side of the free end of the swing knife.

9. A lawn mower with bent fling blades on both sides according to claim 8, characterized in that: The saw blade body is also provided with a knife-flinging hole.

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