Flail knife assembly for corn harvester

Abstract

The flail knife assembly for the corn harvester comprises flail knife parts which are evenly distributed and connecting rods, the connecting rods are used for connecting the flail knife parts, the flail knife parts internally comprise cover cylinders, first installation bases are arranged above the cover cylinders, fixing frames are fixedly installed between the first installation bases and the side faces of the cover cylinders, and the fixing frames are fixedly connected with the flail knife parts. A cutter assembly is arranged below the cover cylinder, a rotating shaft penetrating through the cover cylinder is inserted into the cutter assembly in a penetrating mode, the portion, located in the cutter assembly, of the rotating shaft is sleeved with a nut, cutter rests are evenly welded to the outside of the cutter assembly, blades are installed on the surfaces of the cutter rests, a connecting rope is connected to the surface of the cover cylinder, a baffle is tied to the end of the connecting rope, and second installation bases are symmetrically installed on the side faces of the baffle. The corn stalks are folded to be L-shaped, and then the L-shaped corn stalks are cut layer by layer, so that the cutter is prevented from being stuck, and the quick cutting of the corn stalks is effectively realized.

Description

Technical Field

[0001] The utility model relates to the field of corn harvesters, in particular to a fling knife assembly for corn harvesters. Background Art

[0002] A corn harvester primarily consists of a stalk cutter, a conveyor system, and a hydraulic lift. During operation, the machine advances along the corn ridge, with the cutter blades severing the corn stalks. The stalks are then transported to the right side of the upper, middle, and lower conveyor chains and arranged naturally, completing the harvest. Power separation is achieved by the driver operating the tractor's hydraulic lift system. Once the main engine is raised to its desired resting position, the two B-type V-belts stop rotating, cutting off the diesel engine's power input. This completes power separation, and the cutter blades and conveyor belts stop rotating, while the other way around, they remain in active rotation.

[0003] After the corn harvester cuts the stalks, the corn cobs on the stalks are pulled out by the ear pulling mechanism, and then the corn stalks are conveyed toward the ground, and the corn stalks are cut and chopped using a rotary knife. During this process, the corn harvester will move. When a large number of corn stalks are cut, the rotary knife will not be sharp and will not be able to cut the corn stalks, resulting in the phenomenon of the cutter getting stuck. How to cut the corn stalks without obstruction when harvesting corn is an important problem that needs to be solved. Therefore, the inventor invented a corn harvester with a swing knife assembly to solve the problem of corn harvester cutting corn stalks. Summary of the Invention

[0004] The purpose of the utility model is to solve the deficiencies of the prior art and to provide a fling blade assembly for a corn harvester.

[0005] The utility model is realized through the following technical solutions:

[0006] A blade swing assembly for a corn harvester includes evenly arranged blade swing parts and a connecting rod. The connecting rod is used to connect the blade swing parts. The blade swing part includes a cover tube inside. A first mounting seat is provided above the cover tube. A fixing frame is fixedly installed between the first mounting seat and the side of the cover tube. A knife assembly is provided below the cover tube. A rotating shaft running through the cover tube is inserted into the knife assembly. A nut is mounted on the rotating shaft located in the inner part of the knife assembly. A knife holder is evenly welded on the outside of the knife assembly. A blade is installed on the surface of the knife holder. A connecting rope is connected to the surface of the cover tube. A baffle is tied to the end of the connecting rope. A second mounting seat is symmetrically installed on the side of the baffle.

[0007] Preferably, the fling knife part is installed below the ear picking device of the corn harvester, replacing the rotary knife part installed below the ear picking device, and the baffle is installed on the toothing part of the corn harvester, which cooperates with the fling knife part.

[0008] Preferably, the baffle is located above the tool holder, the tool holder is a rectangular structure, the blades on each tool holder have different thicknesses, and the blades are arranged at an angle to the tool holder.

[0009] Preferably, the upper three quarters of the rotating shaft is a cylindrical structure, and the lower quarter is a rectangular parallelepiped structure. The rectangular parallelepiped structure is inserted into the knife assembly, so that the rotating shaft can slide in the knife assembly and drive the knife assembly to rotate in a circle.

[0010] Preferably, the knife assembly, knife holder and blade are all made of steel.

[0011] Preferably, the coil spring is sleeved outside the rotating shaft between the knife assembly and the cover cylinder.

[0012] The beneficial effects of the utility model are:

[0013] The utility model, through the provision of a baffle, serves as a limiting barrier, can fold corn stalks into an L-shape, changing the direction of cutting the corn stalks, converting a direction perpendicular to the corn stalk core into a direction parallel to the core, similar to the operation of cutting sugarcane. By providing blades of different thicknesses, the corn stalks can be cut layer by layer as the blades rotate with the knife assembly, and the cutting of the corn stalks is completed using the blade surface, without the need for the entire knife holder to act on the corn stalks, thereby protecting the blades to a certain extent. The coil spring serves as a buffer. The special structure of the rotating shaft does not affect the rotation of the rotating shaft, nor does it affect the up and down sliding of the knife assembly on the rotating shaft. By connecting the rotating shaft to the sprocket shaft of the corn harvester conveyor device, the rotation of the sprocket and chain will drive the rotating shaft to rotate, without the need for additional power. The utility model folds the corn stalks into an L-shape, then cuts the L-shaped corn stalks layer by layer, preventing the knife from getting stuck, and effectively achieving rapid cutting of the corn stalks. BRIEF DESCRIPTION OF THE DRAWINGS

[0014] Figure 1 It is a structural diagram of the present utility model.

[0015] Figure 2 This is a schematic diagram of the structure of the knife assembly and the knife holder of the utility model.

[0016] Figure 3 This is a schematic diagram of the positional relationship between the tool holder and corn stalks of the utility model. DETAILED DESCRIPTION

[0017] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the embodiments described are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making creative efforts are within the scope of protection of the present invention.

[0018] See also Figure 1-3 , the utility model provides a technical solution:

[0019] A corn harvester blade assembly includes evenly arranged blade parts and a connecting rod 1. The connecting rod 1 is used to connect the blade parts. The blade parts are installed below the corn harvester's ear picking device, replacing the rotary blade part installed below the ear picking device. When the corn harvester cuts corn stalks, the blade assembly is used for cutting. Specifically, the blade part includes a cover tube 4, a first mounting seat 2 is provided above the cover tube 4, a fixing frame 3 is fixedly installed between the first mounting seat 2 and the side of the cover tube 4, a knife assembly 10 is provided below the cover tube 4, and a rotating shaft 11 running through the cover tube 4 is inserted in the knife assembly 10. A nut is mounted on the rotating shaft in the inner part of 10, and a knife holder 9 is evenly welded on the outside of the knife assembly 10. A blade 8 is installed on the surface of the knife holder 9. A connecting rope 5 is connected to the surface of the cover tube 4. A baffle 7 is tied to the end of the connecting rope 5. A second mounting seat 6 is symmetrically installed on the side of the baffle 7. During the rotation of the sprocket and chain of the conveyor part of the corn harvester, the rotating shaft 11 will be driven to rotate. The rotation of the rotating shaft 11 drives the knife holder 9 to rotate in a circle, and then the blade 8 is used to cut the corn stalk. Due to the existence of the baffle 7, the corn stalk is folded into an L shape, so that the corn stalk can be cut in a manner close to parallel to the center of the corn stalk, thereby improving the cutting efficiency of the corn stalk.

[0020] The baffle 7 is mounted on the toothing part of the corn harvester and is matched with the blade-flinging part.

[0021] The baffle 7 is located above the tool holder 9. The tool holder 9 is a rectangular structure. The blades 8 on each tool holder 9 have different thicknesses, and the blades 8 are inclined relative to the tool holder 9.

[0022] The upper three-quarters of the rotating shaft 11 is a cylindrical structure, and the lower quarter is a rectangular parallelepiped structure. The rectangular parallelepiped structure is inserted into the knife assembly 10, so that the rotating shaft 11 can slide in the knife assembly 10 and drive the knife assembly 10 to rotate in a circle.

[0023] The knife assembly 10, the knife holder 9 and the blade 8 are all made of steel.

[0024] The coil spring 12 is sleeved outside the rotating shaft 11 between the knife assembly 10 and the cover tube 4.

[0025] Working principle: The fling knife assembly is first installed in the original fling knife assembly position of the corn harvester. The principle of the fling knife assembly is to first bend the corn stalks and then cut the bent corn stalks layer by layer to reduce the wear on the blades. Specifically, the rotating shaft 11 is first connected to the sprocket shaft of the corn harvester fling knife assembly. When the sprocket and chain rotate, the rotating shaft 11 rotates, driving the knife assembly 10 to rotate in a circle. During the movement of the corn harvester, the corn stalks are bent by the resistance of the baffle 7. After bending, the blade 8 is no longer perpendicular to the corn stalks, but becomes parallel to the corn stalks, so that layer by layer cutting can be carried out, solving the problem of not having enough time to cut in the current cutting method, thereby efficiently completing the rapid cutting of the corn stalks.

[0026] Although embodiments of the present invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and variations may be made to these embodiments without departing from the principles and spirit of the present invention, and the scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. A corn harvester blade assembly, comprising evenly arranged blade parts and a connecting rod (1), characterized in that: The connecting rod (1) is used to connect the knife-flinging part. The knife-flinging part includes a cover tube (4). A first mounting seat (2) is provided above the cover tube (4). A fixing frame (3) is fixedly installed between the first mounting seat (2) and the side of the cover tube (4). A knife assembly (10) is provided below the cover tube (4). A rotating shaft (11) running through the cover tube (4) is inserted into the knife assembly (10). A nut is set on the rotating shaft located in the inner part of the knife assembly (10). A spiral spring (12) is set on the outer surface of the rotating shaft (11) between the knife assembly (10) and the cover tube (4). A knife holder (9) is uniformly welded on the outside of the knife assembly (10). A blade (8) is installed on the surface of the knife holder (9). A connecting rope (5) is connected to the surface of the cover tube (4). A baffle (7) is fastened to the end of the connecting rope (5). A second mounting seat (6) is symmetrically installed on the side of the baffle (7).

2. The corn harvester blade assembly according to claim 1, characterized in that: The fling knife part is installed below the ear picking device of the corn harvester, replacing the rotary knife part installed below the ear picking device, and the baffle (7) is installed on the toothing part of the corn harvester and cooperates with the fling knife part.

3. The corn harvester blade assembly according to claim 1, characterized in that: The baffle (7) is located above the tool holder (9). The tool holder (9) is a rectangular structure. The blades (8) on each tool holder (9) have different thicknesses, and the blades (8) are arranged at an angle to the tool holder (9).

4. The corn harvester blade assembly according to claim 1, characterized in that: The upper three-quarters of the rotating shaft (11) is a cylindrical structure, and the lower quarter is a rectangular parallelepiped structure. The rectangular parallelepiped structure is inserted into the knife assembly (10), so that the rotating shaft (11) can slide in the knife assembly (10) and drive the knife assembly (10) to rotate in a circle.

5. The corn harvester blade assembly according to claim 1, characterized in that: The knife assembly (10), the knife holder (9) and the blade (8) are all made of steel.

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