Chain type grass trimmer tool bit

Abstract

The utility model relates to the technical field of grass trimmers, in particular to a chain type grass trimmer tool bit which comprises a base, and a plurality of chain type tool bit assemblies are arranged on the outer side of the base. The chain type tool bit assemblies are arranged, the first long blade in each chain type tool bit assembly is sequentially and alternately riveted with the short blades and the long blades through the connecting plates and the connecting pieces, a chain type structure with the linear characteristic is formed, the overall stability and durability are enhanced, grass clamping or grass hooking can be avoided in the weeding process, and in addition, the structure is simple and convenient to operate. Through the cooperation of the cutter groove in the base and the fixing column, a user can conveniently disassemble and assemble the single chain type cutter head assembly according to needs, and polishing maintenance or direct replacement can be carried out according to needs.

Description

TECHNICAL FIELD

[0001] The utility model relates to a grass trimmer technical field especially chain type grass trimmer cutter head. BACKGROUND

[0002] The grass trimmer is a kind of gardening tool, mainly used for trimming lawn, removing weeds, has the function of improving landscape and keeping land clean.

[0003] However, the cutter head of traditional grass trimmer usually adopts the design of several steel ropes or rawhide ropes matched with flexible cutter head, although it can avoid stones on the ground and effectively remove weeds at wall side, but it has the problem of not durable, steel rope, rawhide rope is easy to break, needs to be frequently replaced, in addition, these flexible cutter heads are deficient in sharpness, and it is often difficult to completely cut off dry grass stems and thicker dry grass. UTILITY MODEL CONTENTS

[0004] The utility model is to provide chain type grass trimmer cutter head to solve the problem in the background art.

[0005] To achieve the above object, the utility model provides the following technical scheme: it includes base, the base outside is provided with several chain type cutter head assemblies.

[0006] As preferred in the utility model, the chain type cutter head assembly includes several long blades, a pair of mounting holes one is symmetrically arranged on each long blade, the base one side is provided with the cutter groove corresponding with long blade, the cutter groove is provided with fixed column corresponding with mounting hole one, and the cutter groove one side of base is connected with long blade through fixed column.

[0007] As preferred in the utility model, the bottom of every two long blades is provided with connecting plate, the connecting plate is provided with mounting hole three corresponding with mounting hole one, every two long blades are provided with short blade, mounting hole two is arranged on each short blade corresponding with the position of mounting hole one, connecting piece is arranged in mounting hole three on each connecting plate, and each connecting piece sequentially penetrates mounting hole one on long blade and mounting hole two on short blade.

[0008] As preferred in the utility model, the base is provided with top cover, the base is provided with several bolts, and the base is connected with top cover through bolt.

[0009] Compared with prior art, the above technical scheme of the utility model has the following beneficial technical effects:

[0010] 1. The utility model discloses a chain type cutter head assembly is set up, and long blade is as main cutting component, cooperates sharp cutting edge, can effectively cut off dry grass, shrublet and small bamboo and other hard plants, secondly, the first long blade in each chain type cutter head assembly is riveted short blade and long blade in proper order through connecting plate, connecting piece alternately, forms the chain type structure with linear feature, strengthens the stability and durability of whole, when weeding also can avoid grass or hook grass, in addition, the cooperation of the blade slot on the base and the fixed column can allow the user to conveniently disassemble and assemble a single chain type cutter head assembly according to the need, and according to the need, polish and maintain or directly replace, in addition, the cooperation of long blade, short blade, connecting plate and connecting piece makes the chain type cutter head assembly have a certain degree of bending ability, so as to effectively avoid hard objects in the grass cutting operation. BRIEF DESCRIPTION OF DRAWINGS

[0011] Figure 1 It is the whole structure schematic diagram of the utility model;

[0012] Figure 2 It is chain type cutter head assembly structure schematic diagram of the utility model;

[0013] Figure 3 It is long blade structure schematic diagram in chain type cutter head assembly of the utility model;

[0014] Figure 4 It is top cap structure schematic diagram of the utility model.

[0015] Sign significance: base 1, chain type cutter head assembly 2, long blade 21, mounting hole one 22, blade slot 23, fixed column 24, short blade 25, mounting hole two 26, connecting piece 27, connecting plate 28, mounting hole three 29, top cap 3, bolt 4. DETAILED DESCRIPTION

[0016] In order to make the purpose, technical scheme and advantage of the utility model more clear and obvious, below combining specific implementation and referring to the attached drawing, the utility model is explained in further detail.Should understand, these descriptions are only exemplary, and not to limit the scope of the utility model.Moreover, in the following explanation, the description of known structure and technology is omitted to avoid unnecessary confusion of the concept of the utility model.

[0017] As Figures 1-4 Shown, the utility model discloses chain type grass trimmer cutter head, it includes base 1, and base 1 is the whole chain type grass trimmer cutter head and provides the installation foundation, and the outside of base 1 is provided with several chain type cutter head assemblies 2.

[0018] The chain type cutter head assembly 2 comprises a plurality of long blades 21 which are main cutting components and have sharp cutting edges for cutting dry grass, shrubs, small bamboo and other hard plants. A pair of mounting holes one 22 are symmetrically formed on each long blade 21. A cutter groove 23 corresponding to the long blade 21 is formed on one side of the base 1, which provides a mounting base for the long blade 21. A fixing column 24 corresponding to the mounting hole one 22 is arranged in the cutter groove 23. The cutter groove 23 on one side of the base 1 is connected with the long blade 21 through the fixing column 24, and the fixing column 24 can realize stable mounting of the long blade 21 and the base 1.

[0019] A connecting plate 28 is arranged at the bottom of every two long blades 21, which connects adjacent long blades 21 to form a continuous chain type structure. A mounting hole three 29 corresponding to the mounting hole one 22 is formed on the connecting plate 28, which is used to fix the long blade 21 and the short blade 25 through the connecting piece 27. A short blade 25 is arranged on every two long blades 21. The first long blade 21 in each chain type cutter head assembly 2 is riveted with the short blade 25 and the long blade 21 in turn through the connecting plate 28 and the connecting piece 27, forming a chain type structure with linear characteristics, which enhances the stability and durability of the whole and can also avoid grass clamping or grass hooking during weeding. A mounting hole two 26 is formed on each short blade 25 at a position corresponding to the mounting hole one 22. A connecting piece 27 is arranged in the mounting hole three 29 on each connecting plate 28. Each connecting piece 27 penetrates the mounting hole one 22 on the long blade 21 and the mounting hole two 26 on the short blade 25 in turn. The connecting piece 27 penetrates the connecting plate 28, the long blade 21 and the short blade 25 in turn, and rivets them firmly together. The combination of the connecting plate 28, the connecting piece 27, the mounting hole one 22, the mounting hole two 26 and the mounting hole three 29 realizes that the chain type cutter head assembly 2 can be bent like a rope type cutter head, avoiding hard objects.

[0020] A top cover 3 is arranged on the base 1. A plurality of bolts 4 are arranged on the base 1. The base 1 is connected with the top cover 3 through the bolts 4. The top cover 3 covers the base 1 and is connected with the base 1 through the bolts 4, ensuring that the plurality of chain type cutter head assemblies 2 are stably mounted on the base 1.

[0021] Working principle: the user will chain cutter head assembly 2 on one side of the long blade 21 on the mounting hole 22 to the fixed column 24 in the bottom base 1 on one side of the knife groove 23, and install, realize the stable connection of the bottom base 1 and chain cutter head assembly 2, wherein the first long blade 21 in each chain cutter head assembly 2 is riveted with short blade 25 and long blade 21 alternately through connecting plate 28 and connecting piece 27, forming a chain structure with linear characteristics, which enhances the stability and durability of the whole, and can also avoid grass or grass hooking when weeding, meanwhile, the cooperation of connecting plate 28 and connecting piece 27 also makes chain cutter head assembly 2 have a certain degree of bending ability, so as to effectively avoid hard objects in the grass cutting operation, after installing chain cutter head assembly 2, the user can cover the top cover 3 on the bottom base 1, and use the bolt 4 to tightly connect the top cover 3 and the bottom base 1 together, then the user can install the grass trimmer head on the grass trimmer and start the grass cutting operation, when the chain cutter head assembly 2 is blunt, the user can disassemble it and maintain or directly replace it according to the actual situation.

[0022] It should be understood that the above specific embodiments of the present application are only used for illustrative or explanatory purposes of the principles of the present application, and do not constitute a limitation of the present application. Therefore, any modification, equivalent replacement, improvement, etc. made without departing from the spirit and scope of the present application shall be included in the protection scope of the present application. In addition, the appended claims of the present application are intended to cover all changes and modifications falling within the scope and boundary of the appended claims, or the equivalent forms of such scope and boundary.

Claims

1. Chain-type lawn mower blade, which includes: The base (1) is characterized in that: several chain-type cutter head assemblies (2) are provided on the outer side of the base (1); The chain-type cutter head assembly (2) includes several long blades (21), each of which has a pair of symmetrical mounting holes (22). The base (1) has a groove (23) on one side corresponding to the long blade (21), and a fixing post (24) corresponding to the mounting hole (22) is provided in the groove (23). The groove (23) on one side of the base (1) is connected to the long blade (21) through the fixing post (24).

2. The chain-type lawn mower cutter head according to claim 1, characterized in that: A connecting plate (28) is provided at the bottom of each pair of long blades (21). The connecting plate (28) has a mounting hole (29) corresponding to the mounting hole one (22). A short blade (25) is provided on each pair of long blades (21). A mounting hole (26) is provided on each short blade (25) corresponding to the mounting hole one (22). A connector (27) is provided in the mounting hole three (29) on each connecting plate (28). Each connector (27) passes through the mounting hole one (22) on the long blade (21) and the mounting hole two (26) on the short blade (25) in sequence.

3. The chain-type lawn mower cutter head according to claim 2, characterized in that: The base (1) is provided with a top cover (3) and several bolts (4) are provided on the base (1). The base (1) is connected to the top cover (3) by the bolts (4).

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