Impact-resistant saw blade base body

Abstract

The utility model relates to the technical field of saw blades, in particular to an impact-resistant saw blade base body which comprises a saw blade base body, a plurality of sets of tool bits are evenly arranged on the periphery of the saw blade base body in the circumferential direction, each set of tool bits is composed of thick sawteeth and cutting teeth, and cutting edges are fixedly connected to the cutting teeth. A mounting center hole is formed in the middle of the saw blade base body, an anti-abrasion sleeve is fixedly mounted on the outer side of the mounting center hole, a buffer ring is movably mounted on the outer side of the anti-abrasion sleeve, and multiple sets of buffer mechanisms are fixedly connected to the side, located in the anti-abrasion sleeve, of the buffer ring. Multiple sets of thermal expansion grooves are formed in the outer side of the saw blade base body and located among the multiple sets of tool bits, the multiple sets of thermal expansion grooves are distributed at equal intervals in the circumferential direction along the outer side of the saw blade base body, and compared with an existing saw blade base body, the impact resistance of the saw blade base body can be improved, and the service life of the saw blade base body can be prolonged through the design.

Description

Technical Field

[0001] The utility model relates to the technical field of saw blades, in particular to an impact-resistant saw blade matrix. Background Art

[0002] Circular saw blades are widely used and can be used to cut wood, building materials, lawn shrubs, etc. Among them, the lawn mowing blades for cutting lawn shrubs are disc-shaped saw blades with mounting holes in the center, which are installed on lawn mowers and cut plants by rotation. However, the current lawn mowing blades are relatively thin and light, and the cutting heads are single. There is a circle of saw teeth arranged on the outer ring, which can only be used for some flat lawns, such as playgrounds, ball fields, or clean flower bed lawns. It is difficult to cut lawns mixed with shrubs, branches and stones, and it is extremely easy to damage the cutting edge of the lawn mowing blade. In severe cases, the lawn mowing blade will break and fly to the surrounding area, causing potential safety hazards.

[0003] When the existing saw blades are in use, while increasing the hardness of the saw blades for cutting objects, the saw teeth on the saw blades are relatively easy to break, and the impact resistance is low. Moreover, when they are installed on a cutting machine, the cutting machine is relatively easy to cause wear on the saw blades, resulting in a reduced service life of the saw blades.

[0004] Therefore, it is urgent to design an impact-resistant saw blade matrix to solve the above defects, which is particularly important. Content of the Utility Model

[0005] In view of the deficiencies of the prior art, the utility model designs an impact-resistant saw blade matrix, which aims to solve the technical problems that the existing saw blades are easy to break, have low impact resistance, and are easy to cause wear on the saw blades during installation, resulting in a reduced service life of the saw blades in the prior art.

[0006] To achieve the above object, the utility model provides the following technical solutions:

[0007] An impact-resistant saw blade matrix includes a saw blade matrix. A number of groups of cutting heads are evenly arranged along the circumferential direction on the outer periphery of the saw blade matrix. Each group of cutting heads is composed of coarse saw teeth and cutting teeth. A cutting edge is fixedly connected to the cutting teeth. An installation center hole is opened in the middle of the saw blade matrix. An anti-wear sleeve is fixedly installed outside the installation center hole. A buffer ring is movably installed outside the anti-wear sleeve. A number of groups of buffer mechanisms are fixedly connected to one side of the buffer ring located inside the anti-wear sleeve.

[0008] As a preferred solution of the utility model, a number of groups of thermal expansion grooves are opened between the multiple groups of cutting heads on the outer side of the saw blade matrix, and the multiple groups of thermal expansion grooves are equidistantly distributed along the circumferential direction on the outer side of the saw blade matrix.

[0009] As a preferred embodiment of the present utility model, U-shaped deep grooves are provided between adjacent cutter heads, and trapezoidal shallow grooves are provided on the coarse saw teeth and the cutting teeth.

[0010] As a preferred embodiment of the present utility model, an installation edge is fixedly connected to the outer side of the wear-resistant sleeve. The installation edge is fixedly connected to the saw blade base body through a plurality of fixing screws. Two auxiliary installation holes are symmetrically provided inside the saw blade base body and outside the installation edge.

[0011] As a preferred embodiment of the present utility model, an activity groove is provided inside the wear-resistant sleeve and on the inner side of the buffer ring. A plurality of first rolling balls are movably installed inside the activity groove on the outer side of the wear-resistant sleeve, and the surfaces of the plurality of first rolling balls are all in contact with the inner side wall of the activity groove.

[0012] As a preferred embodiment of the present utility model, the buffer mechanism includes a plurality of telescopic columns fixedly connected to one side of the buffer ring inside the wear-resistant sleeve. The plurality of telescopic columns are evenly distributed at equal intervals along the circumferential direction on the outer side of the wear-resistant sleeve. Activity cylinders are slidably connected to the outer sides of the plurality of telescopic columns, and contraction springs are movably installed inside the plurality of activity cylinders.

[0013] As a preferred embodiment of the present utility model, a second rolling ball is movably installed at one end of each of the plurality of activity cylinders away from the telescopic column, and a rolling groove is provided at a position corresponding to the second rolling ball inside the wear-resistant sleeve.

[0014] Compared with the prior art, the beneficial effects of the present utility model are as follows:

[0015] 1. In the present utility model, through the design of the cutter head, the cutting edges on a plurality of cutting teeth facilitate increasing the sharpness of cutting, and a plurality of coarse saw teeth facilitate cutting harder objects. The relatively deep U-shaped deep grooves enable faster chip removal during cutting, avoiding the phenomenon of saw jamming, thereby improving the cutting effect of the saw blade base body. The trapezoidal shallow grooves can improve the strength on the other side of the cutting teeth, avoiding breakage during the cutting process. By reducing the breakage of the cutter head, the impact resistance is greatly improved.

[0016] 2. In the present utility model, through the cooperative design of the wear-resistant sleeve, the buffer ring and the buffer mechanism, when installing and fixing the saw blade substrate, it is necessary to fix the saw blade substrate by tightening the saw blade installation ring. The saw blade installation ring will be close to the outer side of the buffer ring. As the saw blade installation ring continues to be tightened and fixed, it will drive the buffer ring to rotate inside the movable groove, so that the saw blade installation ring will not cause wear to the surface of the saw blade substrate. As the saw blade installation ring is tightened and fixed, the buffer ring will be pushed into the interior of the wear-resistant sleeve. When the buffer ring is pushed into the interior of the wear-resistant sleeve, the telescopic column contracts towards the inside of the movable cylinder and compresses the compression spring until the saw blade installation ring is completely tightened to fix the saw blade substrate. And because the compression spring will always apply an outward force, and the buffer ring resists the saw blade installation ring and applies an opposite force, thereby improving the installation and fixing effect of the saw blade substrate. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 is a schematic diagram of the overall structure of the present utility model;

[0018] Figure 2 is Figure 1 an enlarged schematic view of part A in

[0019] Figure 3 is a cross-sectional view of the internal structure of the wear-resistant sleeve of the present utility model;

[0020] Figure 4 is Figure 3 an enlarged schematic view of part B in

[0021] In the figure: 1. Saw blade substrate; 101. Thermal expansion groove; 2. Tool bit; 201. U-shaped deep groove; 3. Coarse saw teeth; 301. Trapezoidal shallow groove; 4. Cutting teeth; 5. Cutting edge; 6. Mounting center hole; 7. Wear-resistant sleeve; 701. Mounting edge; 702. Fixing screw; 703. Auxiliary mounting hole; 8. Buffer ring; 801. Movable groove; 802. First ball; 9. Buffer mechanism; 901. Telescopic column; 902. Movable cylinder; 903. Compression spring; 904. Second ball; 905. Ball groove. DETAILED DESCRIPTION OF THE EMBODIMENTS

[0022] Next, the technical solutions in the embodiments of the present utility model will be clearly and completely described in conjunction with the embodiments of the present utility model. Obviously, the described embodiments are only a part of the embodiments of the present utility model, rather than all the embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative efforts shall fall within the protection scope of the present utility model.

[0023] Embodiment:

[0024] Please refer to Figures 1 - 4 , the present utility model provides a technical solution:

[0025] An impact-resistant saw blade substrate, including a saw blade substrate 1, several groups of cutting heads 2 are evenly arranged on the outer circumference of the saw blade substrate 1 along the circumferential direction. Each group of cutting heads 2 is composed of a coarse saw tooth 3 and a cutting tooth 4. A cutting edge 5 is fixedly connected to the cutting tooth 4. An installation center hole 6 is opened in the middle of the saw blade substrate 1. An anti-wear sleeve 7 is fixedly installed outside the installation center hole 6. A buffer ring 8 is movably installed outside the anti-wear sleeve 7. A plurality of buffer mechanisms 9 are fixedly connected to one side of the buffer ring 8 located inside the anti-wear sleeve 7.

[0026] First, a plurality of thermal expansion grooves 101 are opened on the outer side of the saw blade substrate 1 and between the plurality of groups of cutting heads 2, and the plurality of thermal expansion grooves 101 are equally spaced along the circumferential direction on the outer side of the saw blade substrate 1. The plurality of thermal expansion grooves 101 are evenly distributed on the saw blade substrate 1. When the saw blade substrate 1 is working, the thermal expansion grooves 101 offset the thermal expansion generated by the high-speed rotation and friction with the material of the saw blade substrate 1, thereby improving the strength of the saw blade substrate 1 and extending the service life of the saw blade substrate 1.

[0027] Furthermore, a U-shaped deep groove 201 is opened between adjacent cutting heads 2. A trapezoidal shallow groove 301 is opened on the coarse saw tooth 3 and the cutting tooth 4. The cutting edges 5 on the plurality of cutting teeth 4 facilitate increasing the sharpness of cutting, while the plurality of coarse saw teeth 3 facilitate cutting harder objects. The deeper U-shaped deep groove 201 enables faster chip removal during cutting, avoiding the phenomenon of saw jamming, thereby improving the cutting effect of the saw blade substrate 1. The trapezoidal shallow groove 301 can improve the strength on the other side of the cutting tooth 4, avoiding breakage during the cutting process. By reducing the breakage of the cutting heads 2, the impact resistance is greatly improved.

[0028] Then, an installation edge 701 is fixedly connected to the outer side of the anti-wear sleeve 7. The installation edge 701 is fixedly connected to the saw blade substrate 1 through a plurality of fixing screws 702. Two groups of auxiliary installation holes 703 are symmetrically opened inside the saw blade substrate 1 and outside the installation edge 701. The installation edge 701 is installed and fixed through the fixing screws 702, thereby installing the anti-wear sleeve 7 on the side that needs to be tightened in the installation center hole 6. At the same time, when installing and fixing the saw blade substrate 1, the saw blade substrate 1 can be quickly installed and positioned through the auxiliary installation holes 703.

[0029] Furthermore, an activity groove 801 is provided inside the anti-wear sleeve 7 and on the inner side of the buffer ring 8. A plurality of first rolling balls 802 are movably installed inside the activity groove 801 on the outer side of the anti-wear sleeve 7, and the surfaces of the plurality of first rolling balls 802 are all in contact with the inner side wall of the activity groove 801. When installing and fixing the saw blade base body 1, it is necessary to fix the saw blade base body 1 by tightening the saw blade mounting ring. The saw blade mounting ring will be close to the outer side of the buffer ring 8. As the saw blade mounting ring continues to be tightened and fixed, it will drive the buffer ring 8 to rotate inside the activity groove 801. The plurality of first rolling balls 802 assist in rolling inside the activity groove 801, reducing the friction force of the buffer ring 8, so that the saw blade mounting ring will not cause wear to the surface of the saw blade base body 1, thereby improving the service life of the saw blade base body 1.

[0030] Secondly, the buffer mechanism 9 includes a plurality of telescopic columns 901 fixedly connected to one side of the buffer ring 8 inside the anti-wear sleeve 7, and the plurality of telescopic columns 901 are evenly distributed along the circumferential direction on the outer side of the anti-wear sleeve 7. A movable cylinder 902 is slidably connected to the outer side of each of the plurality of telescopic columns 901, and a contraction spring 903 is movably installed inside each of the plurality of movable cylinders 902. As the saw blade mounting ring is tightened and fixed, the buffer ring 8 will be pushed into the anti-wear sleeve 7. When the buffer ring 8 is pushed into the anti-wear sleeve 7, the telescopic column 901 contracts towards the inner side of the movable cylinder 902 and compresses the contraction spring 903 until the saw blade mounting ring is completely tightened to fix the saw blade base body 1. Since the contraction spring 903 always exerts an outward force, the buffer ring 8 resists the saw blade mounting ring and exerts an opposite force, thereby improving the installation and fixing effect of the saw blade base body 1.

[0031] Finally, a second rolling ball 904 is movably installed at one end of each of the plurality of movable cylinders 902 away from the telescopic column 901. A rolling groove 905 is provided at a position corresponding to the second rolling ball 904 inside the anti-wear sleeve 7. When the buffer ring 8 rotates inside the anti-wear sleeve 7, the plurality of second rolling balls 904 roll inside the rolling groove 905, enabling the movable cylinder 902 to move accordingly.

[0032] In this embodiment, the implementation scenario is specifically as follows: The cutting edges 5 on multiple cutting teeth 4 facilitate increasing the sharpness of cutting, while multiple coarse saw teeth 3 facilitate cutting harder objects. The relatively deep U-shaped deep groove 201 enables faster chip removal during cutting, avoiding the phenomenon of saw jamming, thereby improving the cutting effect of the saw blade substrate 1. The trapezoidal shallow groove 301 can improve and reduce the strength on the other side of the cutting tooth 4, avoiding breakage during the cutting process. The mounting edge 701 is installed and fixed by the fixing screw 702, so that the wear-resistant sleeve 7 is installed on one side of the mounting center hole 6 that needs to be tightened. At the same time, when installing and fixing the saw blade substrate 1, the saw blade substrate 1 is quickly installed and positioned through the auxiliary mounting hole 703. When installing and fixing the saw blade substrate 1, it is necessary to fix the saw blade substrate 1 by tightening the saw blade mounting ring. The saw blade mounting ring will be close to the outer side of the buffer ring 8. As the saw blade mounting ring continues to be tightened and fixed, it will drive the buffer ring 8 to rotate inside the movable groove 801. Multiple groups of first balls 802 assist in rolling inside the movable groove 801, reducing the friction force of the buffer ring 8, so that the saw blade mounting ring will not cause wear to the surface of the saw blade substrate 1. As the saw blade mounting ring is tightened and fixed, the buffer ring 8 will be pushed into the interior of the wear-resistant sleeve 7. When the buffer ring 8 is pushed into the interior of the wear-resistant sleeve 7, the telescopic column 901 contracts towards the inside of the movable cylinder 902 and compresses the compression spring 903 until the saw blade mounting ring is completely tightened to fix the saw blade substrate 1. Since the compression spring 903 will always apply an outward force, and the buffer ring 8 resists the saw blade mounting ring and applies an opposite force, the installation and fixing effect of the saw blade substrate 1 is improved. The entire operation process is simple and convenient. Compared with the existing saw blade substrate 1, the present utility model can improve the impact resistance and service life of the saw blade substrate 1 through the design.

[0033] Although the embodiments of the present utility model have been shown and described, for those of ordinary skill in the art, it can be understood that various changes, modifications, substitutions, and variations can be made to these embodiments without departing from the principles and spirit of the present utility model. The scope of the present utility model is defined by the appended claims and their equivalents.

Claims

1. An impact-resistant saw blade substrate, comprising a saw blade substrate (1), characterized in that: The outer circumference of the saw blade base (1) is evenly provided with a plurality of groups of cutter heads (2) along the circumferential direction, each group of cutter heads (2) is composed of coarse saw teeth (3) and cutting teeth (4), and a cutting edge (5) is fixedly connected to the cutting teeth (4). A mounting center hole (6) is opened in the middle of the saw blade base (1), an anti-wear sleeve (7) is fixedly installed on the outer side of the mounting center hole (6), a buffer ring (8) is movably installed on the outer side of the anti-wear sleeve (7), and a plurality of groups of buffer mechanisms (9) are fixedly connected to one side of the buffer ring (8) located inside the anti-wear sleeve (7).

2. The impact-resistant saw blade substrate according to claim 1, characterized in that: A plurality of groups of thermal expansion grooves (101) are provided on the outer side of the saw blade base (1) and between the plurality of groups of cutter heads (2), and the plurality of groups of thermal expansion grooves (101) are distributed at equal intervals along the circumferential direction of the outer side of the saw blade base (1).

3. The impact-resistant saw blade substrate according to claim 1, characterized in that: U-shaped deep grooves (201) are provided between adjacent blade heads (2), and trapezoidal shallow grooves (301) are provided between the coarse saw teeth (3) and the cutting teeth (4).

4. The impact-resistant saw blade substrate according to claim 1, characterized in that: The outer side of the anti-wear sleeve (7) is fixedly connected to a mounting edge (701), and the mounting edge (701) is fixedly connected to the saw blade base (1) via a plurality of sets of fixing screws (702). Two sets of auxiliary mounting holes (703) are symmetrically provided inside the saw blade base (1) and located on the outer side of the mounting edge (701).

5. The impact-resistant saw blade substrate according to claim 1, characterized in that: A movable groove (801) is provided inside the anti-wear sleeve (7) and located on the inner side of the buffer ring (8), and multiple groups of first rolling balls (802) are movably installed on the outer side of the anti-wear sleeve (7) and located inside the movable groove (801), and the surfaces of the multiple groups of first rolling balls (802) are all in contact with the inner wall of the movable groove (801).

6. The impact-resistant saw blade substrate according to claim 1, characterized in that: The buffer mechanism (9) comprises a plurality of groups of telescopic columns (901) fixedly connected to the buffer ring (8) and located on one side of the interior of the anti-wear sleeve (7), and the plurality of groups of telescopic columns (901) are located on the outside of the anti-wear sleeve (7) and are distributed at equal intervals in the circumferential direction, and the outer sides of the plurality of groups of telescopic columns (901) are slidably connected to movable cylinders (902), and the interiors of the plurality of groups of movable cylinders (902) are movably installed with contraction springs (903).

7. The impact-resistant saw blade substrate according to claim 6, characterized in that: A second rolling ball (904) is movably mounted on one end of the plurality of movable cylinders (902) away from the telescopic column (901), and a rolling groove (905) is provided inside the anti-wear sleeve (7) at a position corresponding to the second rolling ball (904).

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