Cutting knife blade of harvester

Abstract

The utility model discloses a harvester cutting knife blade which comprises a knife strip and a triangular blade body, sawteeth are arranged on the two sides of the blade body, two installation holes are symmetrically formed in the blade body, the knife strip comprises a bottom plate and a limiting installation plate, and a plurality of sets of matching holes are formed in the bottom plate and the limiting installation plate. The utility model has the advantages that the blade can keep the sharpness for a longer time in the cutting or puncturing operation through special process treatment, and the requirement of frequently replacing the blade is reduced, so that the working efficiency is improved, and the cost is reduced.

Description

Technical Field

[0001] The utility model relates to the technical field of harvester cutters, in particular to a harvester cutter blade. Background Art

[0002] Harvester blades are one of the core components of a harvester. Their primary functions include cutting crops, collecting harvested crops, and clearing straw. The blades effectively cut crops such as rice, wheat, and corn through high-speed rotation or reciprocating motion. The quality and standardization of the blades directly impact the harvester's cutting efficiency and production stability. High-quality blades should exhibit excellent wear resistance, impact resistance, and corrosion resistance.

[0003] Currently, blades are generally made of 65Mn spring steel. Blades are often blunted, damaged, or have continuous tooth missing, and need to be replaced regularly. The utility model optimizes the hardness and wear resistance of the blade body, especially the edge strength of the saw teeth. Utility Model Content

[0004] The utility model aims to solve the problem that the above blades are frequently blunted, damaged or have continuous tooth missing, and need to be replaced with new blades regularly.

[0005] In order to solve the above technical problems, the technical solution provided by the utility model is: a harvester cutter blade, including a knife strip and a triangular blade, serrations are provided on both sides of the blade, two mounting holes are symmetrically provided on the blade, the knife strip includes a base plate and a limit mounting plate, and several groups of matching holes are provided on the base plate and the limit mounting plate, and the blade is installed between the base plate and the limit mounting plate.

[0006] As an improvement, the material of the blade is SK5;

[0007] Among them, the blade is quenched by high-frequency heat treatment, so that the edge hardness of the serrations reaches HRC45-58 degrees.

[0008] As an improvement, a plurality of limiting columns are provided in the matching space between the limiting mounting plate and the base plate, and the limiting columns limit the blade under the installation condition.

[0009] The advantages of the utility model are that: after special processing, it has good toughness, can withstand the impact and vibration of crop straw during the harvesting process, reduce the risk of breakage and deformation, the blade can maintain its sharpness for a longer time during cutting or piercing operations, and reduce the need for frequent blade replacement, thereby improving work efficiency and reducing costs. BRIEF DESCRIPTION OF THE DRAWINGS

[0010] Figure 1 This is a schematic diagram of the knife strip and blade structure of the utility model.

[0011] Figure 2 It is a rear view of the blade of the present invention.

[0012] Figure 3 It is a schematic diagram of the installation structure of the utility model.

[0013] As shown in the figure: 1. Blade; 2. Blade; 3. Serration; 4. Mounting hole; 5. Base plate; 6. Limit mounting plate; 7. Matching hole; 8. Limit column. DETAILED DESCRIPTION

[0014] The present invention will be described in further detail below with reference to the accompanying drawings.

[0015] Combined with attachment Figure 1 、 Figure 2 、 Figure 3 A harvester cutting blade includes a blade strip and a triangular blade. Saw teeth are provided on both sides of the blade. Two mounting holes are symmetrically provided on the blade. The blade strip includes a base plate and a limit mounting plate. Several groups of matching holes are provided on the base plate and the limit mounting plate. Several limiting columns are provided in the matching space between the limit mounting plate and the base plate. The limiting columns limit the blade under the installation condition.

[0016] The blade is made of SK5, a high-carbon steel commonly used in the manufacture of knives and tools, known for its good hardness and wear resistance.

[0017] Among them, the blade is quenched by high-frequency heat treatment to make the edge hardness of the serration reach HRC45-58 degrees. The high-frequency heat treatment quenching process is a process of rapid heating and then rapid cooling. This process can effectively improve the hardness of the material surface. HRC45-58 degrees refers to the Rockwell hardness. After the blade surface is treated, the edge hardness of the product reaches a very high level.

[0018] It should be noted that 65Mn is a relatively common spring steel. Although its wear resistance and hardness are good, its hardness is usually low without special heat treatment, and its wear resistance is not as good as SK5 which has undergone high-frequency heat treatment and quenching. The blade used in the present invention has a wear resistance of more than 4 times that of the above-mentioned ordinary blade material after high-frequency heat treatment and quenching.

[0019] During the specific implementation of the present invention, SK5 is used to manufacture the blades, and the blades are quenched by high-frequency heat treatment so that the edge hardness of the saw teeth reaches HRC45-58 degrees. During installation, multiple blades are placed between the base plate and the limit mounting plate and fixed by the limit columns.

[0020] The above description of the present invention and its embodiments is non-limiting. The drawings show only one embodiment of the present invention, and the actual structure is not limited thereto. In short, if a person skilled in the art is inspired by the above, and does not deviate from the purpose of the present invention, without inventive design, a structure and embodiment similar to the technical solution should fall within the scope of protection of the present invention.

Claims

1. A harvester blade, comprising a blade strip (1) and a triangular blade (2), characterized in that: The blade (2) is provided with saw teeth (3) on both sides, and two mounting holes (4) are symmetrically provided on the blade (2). The blade strip (1) comprises a bottom plate (5) and a position-limiting mounting plate (6), and the bottom plate (5) and the position-limiting mounting plate (6) are provided with a plurality of groups of matching holes (7). The blade (2) is installed between the bottom plate (5) and the position-limiting mounting plate (6).

2. The harvester blade according to claim 1, characterized in that: The material of the blade (2) is SK5; The blade (2) is quenched by high-frequency heat treatment so that the hardness of the cutting edge of the saw teeth (3) reaches HRC45-58 degrees.

3. The harvester blade according to claim 1, characterized in that: A plurality of limiting columns (8) are provided in the matching space between the limiting mounting plate (6) and the bottom plate (5), and the limiting columns (8) limit the blade (2) under the installation condition.

Images