Blade protector with height increasing fins and arc-shaped anti-skid knife edge and harvesting machine provided with blade protector

Abstract

The utility model relates to a blade protector with a height increasing fin and an arc-shaped anti-skid knife edge and a harvesting machine provided with the blade protector. The height increasing fin is arranged on an upper tooth holder; an arc-shaped anti-skidding knife edge is arranged at the cutting edge, and the arc-shaped anti-skidding knife edge is in a crescent shape. And the highest part of the height increasing fin is close to the connecting seat. According to the utility model, the function of the height lifting fin is that when lodging crops are harvested, the crops are lifted through the height lifting fin, the height of the crops is increased, the crops can be conveniently grabbed by the reel, and the feeding efficiency is improved. The arc-shaped anti-skid knife edge is arranged at the cutting edge and has the function of improving the shearing efficiency of the cutting knife, specifically, stalks of crops are placed in the arc-shaped anti-skid knife edge, shearing of the cutting knife is facilitated, the cutting knife is used in cooperation with the driving knife installed in the cutting groove, the stalks of the crops are cut more stably, and the loss rate of grains is reduced; and the grass blocking phenomenon is avoided.

Description

Technical Field

[0001] The utility model relates to the technical field of crop harvesting devices, in particular to a blade guard with height-lifting fins and an anti-slip arc-shaped blade, and a harvesting machine equipped with the blade guard. Background Art

[0002] Blade guards are essential accessories for agricultural harvesting machinery, protecting the harvester's blades and assisting in straw cutting. The quality of straw cutting directly affects the rate of grain loss. Poor cutting results in pulling and vibrating the straw, causing large amounts of rice, wheat, and other crops to fall across the fields, resulting in significant waste. Furthermore, crop lodging due to various reasons can further exacerbate crop loss.

[0003] There are two basic types of blade guards available: the non-fixed blade type lacks a sharp cutting edge, preventing it from generating a cutting force with the active blade, resulting in poor cutting performance. The flat-bladed fixed blade type, however, offers poor cutting performance when harvesting immature crops and hardy crops like rapeseed. It also prevents efficient feeding of fallen crops.

[0004] Chinese patent CN2022229373128 (patentee: Zhang Xuewen, inventor: Zhang Xuewen) discloses a new blade guard and a harvesting machine equipped with the blade guard. Cutting edges are provided on both sides of the lower tooth seat, which are used in conjunction with an active knife installed in the cutting groove to cut the stems of crops.

[0005] However, the inventors of this patent discovered in subsequent in-depth research that when harvesting fallen crops, it is inconvenient for the reel to grab, thereby reducing the feeding efficiency when harvesting fallen crops. At the same time, although cutting edges are set on both sides of the lower tooth seat, it is found in actual use that the stems of immature crops (when the stems are green) are relatively strong and tough. When cutting the stems of immature crops and harder crops (rapeseed, soybeans, etc.), the stems will also slip on the cutting edge, resulting in poor cutting force effect, which is not conducive to the cutting efficiency of the cutter. At the same time, we have found in large-scale use that when the existing blade guard is used to harvest fallen crops, after the cutter knife completes the cutting, the stems completely fall on the blade guard due to lodging. The rotating reel of the harvester cannot grab or can only grab part of it, and cannot be fed to the cutting table roller efficiently. This results in limited harvesting efficiency and clogging of the cutting table, which is a very common phenomenon. Utility Model Content

[0006] The purpose of the utility model is to address the above-mentioned existing problems and provide a blade guard with a stem height-raising fin and an anti-slip arc-shaped blade, and a harvesting machine equipped with the blade guard.

[0007] To achieve the above-mentioned purpose, the present invention is implemented by adopting the following technical solutions: a blade guard with a height-raising fin and an arc-shaped anti-slip blade edge, comprising a lower guard seat and a plurality of upper cover plates arranged above and below the lower guard seat; the upper cover plate comprises an upper tooth seat and a convex body extending downward along the upper tooth seat and perpendicular to one end of the upper tooth seat; the lower guard seat comprises a mounting seat and a plurality of lower tooth seats connected by arc-shaped connecting seats extending along the mounting seat direction; the convex body of the upper tooth seat is fixedly connected to the upper surface of the lower tooth seat, and a cutting groove is formed between the upper tooth seat and the lower tooth seat, the cutting groove corresponds to the two side surfaces of the lower tooth seat and a cutting edge is fixed along the direction of the lower tooth seat; the characteristics are:

[0008] The upper gear seat is provided with a height-raising fin;

[0009] The cutting edge is provided with an arc-shaped anti-slip blade edge, and the shape of the anti-slip blade edge is an arc-shaped crescent.

[0010] The highest point of the lifting fin is close to the connecting seat.

[0011] The width of the cutting edge exposed from the cutting groove is 1-6 mm; the angle of the cutting edge is an acute angle.

[0012] A plurality of mounting holes are provided on the mounting seat.

[0013] A harvesting machine is provided. The harvester is provided with a blade guard having a stem height-raising fin and an arc-shaped anti-slip blade. The mounting seat is installed on the harvesting machine, and the main blade is arranged in a cutting groove between an upper tooth seat and a lower tooth seat.

[0014] According to the above technical solution, the utility model has at least the following beneficial effects:

[0015] 1. The utility model is provided with a stem height lifting fin on the upper tooth seat. The function of the lifting fin is to lift the fallen crops through the height lifting fin when harvesting fallen crops, so as to facilitate the reel to grab them, improve the feeding efficiency and reduce the congestion of the machine cutter.

[0016] 2. An arc-shaped anti-slip blade is set at the cutting edge. The shape of the anti-slip blade is designed to be an arc-shaped crescent. The function of the anti-slip blade is to improve the shearing efficiency of the cutter. Specifically, when the cutter cuts, the crops are concentrated and squeezed in the arc-shaped anti-slip blade. The cutting force of the cutter acts more effectively on the stems and will not slip, which is conducive to the shearing of the cutter, improves the harvesting efficiency, reduces the loss rate of grain, and avoids grass jamming. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 It is a structural diagram of the utility model;

[0018] Among them: 1 upper tooth seat, 2 convex body, 3 mounting seat, 4 lower tooth seat, 5 cutting groove, 6 cutting edge, 7 mounting hole, 8 connecting seat, 9 height lifting fin, 10 arc-shaped anti-slip blade. DETAILED DESCRIPTION

[0019] In order to make the technical means, creative features, objectives and effects achieved by the present invention easier to understand, the present invention is further described below in conjunction with specific implementation methods.

[0020] A blade guard with a stem height-raising fin and an arc-shaped anti-slip blade edge comprises a lower guard seat and multiple upper cover plates arranged above and below the guard seat; the upper cover plate comprises an upper tooth seat 1 and a protrusion 2 extending downwardly along the upper tooth seat 1 and perpendicular to one end of the upper tooth seat 1; the lower guard seat comprises a mounting seat 3 and multiple lower tooth seats 4 extending along the mounting seat 3 and connected via an arc-shaped connecting seat 8; the protrusion 2 of the upper tooth seat 1 is fixedly connected to the upper surface of the lower tooth seat 4, and a cutting groove 5 is formed between the upper tooth seat 1 and the lower tooth seat 4. The cutting groove 5 corresponds to the two side surfaces of the lower tooth seat 4 and a cutting edge 6 is fixed along the lower tooth seat 4; the upper tooth seat 1 is provided with a stem height-raising fin 9; the cutting edge 6 is provided with an arc-shaped anti-slip blade edge 10, which is in the shape of an arc crescent. The height-raising fin 9 can be used to raise the height of fallen crops when harvesting, making them easier for the reel to grab and improve feeding efficiency; the arc-shaped anti-slip blade edge 10 can improve the cutting efficiency of the cutter.

[0021] Furthermore, the highest point of the height-raising fin 9 is close to the connecting seat 8 .

[0022] Furthermore, during the design, it can be designed as follows: the width of the cutting edge 6 exposed from the cutting groove 5 is 1-6 mm; and the angle of the cutting edge 6 is an acute angle.

[0023] Furthermore, the arc-shaped anti-slip blade is arranged on the rear half of the cutting edge (close to the end of the mounting seat) and a plurality of mounting holes 7 are opened on the mounting seat 3. The blade guard is installed on the harvesting machine with the help of bolts. Generally, two mounting holes 7 can meet the installation requirements.

[0024] When in use, the mounting base 3 on the blade guard is fixed to the knife beam of the harvesting machine, and then the main knife is set between the cutting groove 5 between the upper tooth seat 1 and the lower tooth seat 4. The main knife is connected to the knife rod, and the main knife and the blade guard move with each other to form a movable knife. Under the drive of the power part of the harvesting machine, the knife rod is pulled back and forth, so that the main knife makes a cutting movement back and forth in the cutting groove 5 to cut off the crop stems.

[0025] It is understood from common technical knowledge that the present invention may be implemented through other embodiments that do not depart from its spirit or essential features. Therefore, the embodiments disclosed above are, in all respects, merely illustrative and not exclusive. All modifications within the scope of the present invention or equivalent to the scope of the present invention are intended to be encompassed by the present invention.

Claims

1. A blade guard with a height-lifting fin and an arc-shaped anti-slip blade edge, comprising a lower guard seat and a plurality of upper cover plates arranged above and below the lower guard seat; the upper cover plate comprises an upper tooth seat (1) and a convex body (2) extending downward along the upper tooth seat (1) and perpendicular to one end of the upper tooth seat (1); the lower guard seat comprises a mounting seat (3) and a plurality of lower tooth seats (4) extending along the mounting seat (3) and connected by arc-shaped connecting seats (8); the convex body (2) of the upper tooth seat (1) is fixedly connected to the upper surface of the lower tooth seat (4), and a cutting groove (5) is formed between the upper tooth seat (1) and the lower tooth seat (4), the cutting groove (5) corresponding to the two side surfaces of the lower tooth seat (4) and a cutting edge (6) is fixed along the direction of the lower tooth seat (4); the characteristics are: The upper gear seat (1) is provided with a height-raising fin (9); The cutting edge (6) is provided with an arc-shaped anti-slip blade edge (10), and the shape of the arc-shaped anti-slip blade edge (10) is an arc-shaped crescent.

2. The blade guard with height-raising fins and arc-shaped anti-slip blade according to claim 1, characterized in that: The highest point of the height-raising fin (9) is close to the connecting seat (8).

3. The blade guard with height-raising fins and arc-shaped anti-slip blade according to claim 1, characterized in that: The width of the cutting edge (6) exposed from the cutting groove (5) is 1-6 mm; the angle of the cutting edge (6) is an acute angle.

4. The blade guard with height-raising fins and arc-shaped anti-slip blade according to claim 1, characterized in that: The mounting seat (3) is provided with a plurality of mounting holes (7).

5. A harvesting machine, characterized in that: The harvester is equipped with a blade guard with a height-raising fin and an arc-shaped anti-slip blade according to any one of claims 1 to 4, wherein the mounting seat (3) is mounted on the harvester, and the main blade is arranged in a cutting groove (5) between an upper tooth seat (1) and a lower tooth seat (4).

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