Tool bit of corn harvester

Abstract

The utility model discloses a corn harvester tool bit which comprises a mounting plate and a rotary tool rest cylinder, the middle of the mounting plate is rotatably connected with a transmission shaft in a penetrating mode through a rotating shaft, the outer curved surface of the transmission shaft is fixedly connected with a connecting frame, and the diameter of the rotary tool rest cylinder is gradually reduced from back to front in sequence to form a conical shape. Propeller blades are fixedly connected to the outer curved surface of the front end of the rotary knife rest cylinder, a fixing ring is fixedly connected to the outer curved surface of the middle-rear end of the rotary knife rest cylinder, a mounting groove is formed in the outer curved surface of the fixing ring, a second mounting hole is formed in the middle of the mounting groove in a penetrating mode, and harvesting blades are fixedly connected to the inner wall of the mounting groove; first mounting holes are formed in the four corners of the mounting plate in a penetrating mode, and the four first mounting holes are symmetrically distributed around the four corners of the first mounting plate correspondingly. According to the corn stalk harvesting device, corn stalks can move backwards and downwards in advance while being harvested, and the problem that the corn stalks can only be pushed downwards through a harvesting blade is solved.

Description

Technical Field

[0001] The utility model relates to the technical field of corn harvesters, and specifically relates to a cutter head of a corn harvester. Background Art

[0002] A corn harvester is an agricultural machinery used to complete the operation of harvesting corn straw according to agronomic requirements when the corn is mature or nearly mature. It is developed for the development of new energy and the reduction of farmers' labor intensity, and mainly consists of a cutting rod device, a conveying device, a hydraulic lifter, etc. When the corn harvester is operating, it will move forward along the direction of the corn ridge, and cooperate with the cutter head of the corn harvester to cut off the corn straw. The straw is output in the right direction of the conveying chain and placed naturally to complete the harvesting.

[0003] However, in actual use of the prior art, during the process of using the cutter head of the corn harvester to harvest corn straw, the common cutter head of the corn harvester usually has a cylindrical cutter holder with a unified diameter, and harvesting blades are fixedly installed on the outer curved surface of the cutter holder. The cylindrical cutter holder is driven to rotate by a power device. When the cylindrical cutter holder rotates, it will drive the harvesting blades to rotate and harvest the corn straw, and push the harvested corn straw downward during harvesting. At the same time, it cooperates with the corn separation structure to separate the corn to be harvested from the corn straw, so as to achieve the harvesting function of the corn. However, during the process of using a cylindrical cutter holder with a unified diameter and harvesting blades to harvest corn straw, the corn straw needs to touch the rotating harvesting blades to be forced to move downward. When the harvesting blades are worn after long-term use, it will cause the harvesting blades to slip when pushing the corn straw, resulting in a decrease in the efficiency of the corn straw during downward movement and cutting. Content of the Utility Model

[0004] The purpose of the utility model is to provide a cutter head of a corn harvester to solve the problem proposed in the above background art that during the process of using the cutter head of the corn harvester to harvest corn straw, the common cutter head of the corn harvester usually has a cylindrical cutter holder with a unified diameter, and harvesting blades are fixedly installed on the outer curved surface of the cutter holder. The cylindrical cutter holder is driven to rotate by a power device. When the cylindrical cutter holder rotates, it will drive the harvesting blades to rotate and harvest the corn straw, and push the harvested corn straw downward during harvesting. At the same time, it cooperates with the corn separation structure to separate the corn to be harvested from the corn straw, so as to achieve the harvesting function of the corn. However, during the process of using a cylindrical cutter holder with a unified diameter and harvesting blades to harvest corn straw, the corn straw needs to touch the rotating harvesting blades to be forced to move downward. When the harvesting blades are worn after long-term use, it will cause the harvesting blades to slip when pushing the corn straw, resulting in a decrease in the efficiency of the corn straw during downward movement and cutting.

[0005] To achieve the above object, the present utility model provides the following technical solutions: It includes a mounting plate and a rotary tool holder cylinder. A transmission shaft is rotatably connected through the middle of the mounting plate by a rotating shaft. A connecting frame is fixedly connected to the outer surface of the transmission shaft. The diameter of the rotary tool holder cylinder gradually decreases from the rear to the front in a conical shape. A propeller blade is fixedly connected to the outer surface of the front end of the rotary tool holder cylinder. A fixing ring is fixedly connected to the outer surface of the middle and rear ends of the rotary tool holder cylinder. An installation groove is provided on the outer surface of the fixing ring. A second installation hole is penetrated through the middle of the installation groove. A harvesting blade is fixedly connected to the inner wall of the installation groove.

[0006] Preferably, first installation holes are penetrated through the four corners of the mounting plate, and the number of the first installation holes is four, which are symmetrically distributed at the four corners of the first mounting plate respectively.

[0007] Preferably, the circumferential surface of the rear top end of the rotary tool holder cylinder is rotatably connected to the front side surface of the mounting plate through a rotating shaft, and the rear top end of the transmission shaft is in transmission connection with the power device part of the corn harvester.

[0008] Preferably, the number of the connecting frames is several, which are symmetrically distributed in sequence from the front to the rear on the outer surface of the transmission shaft, and the outer top ends of the connecting frames are fixedly connected to the inner wall of the rotary tool holder cylinder.

[0009] Preferably, the number of the fixing rings is three, which are symmetrically distributed in sequence from the front to the rear on the outer surface of the middle and rear ends of the rotary tool holder cylinder.

[0010] Preferably, the number of the installation grooves is several, which are rotationally symmetrically distributed on the outer surface of the fixing ring, and the harvesting blades are alternately distributed on the outer surface of the middle and rear ends of the rotary tool holder cylinder in sequence.

[0011] Compared with the prior art, the beneficial effects of the present utility model are:

[0012] When the power device part of the corn harvester drives the transmission shaft to rotate, the transmission shaft will drive the connecting frame to rotate. When the connecting frame rotates, it will drive the rotary tool holder cylinder to rotate. The diameter of the rotary tool holder cylinder gradually decreases from the rear to the front in a conical shape. A propeller blade is welded to the outer surface of the front end of the rotary tool holder cylinder. When the rotary tool holder cylinder rotates, it will drive the propeller blade to rotate. When the propeller blade rotates and contacts the corn straw, under the acting force of the rotation of the propeller blade, the corn straw will be pushed to move backward and downward, thus playing a role in pre-pushing the corn straw to move backward and downward.

[0013] When the rotary tool rest cylinder of the present utility model rotates, it will drive the fixed ring to rotate. When the fixed ring rotates, it will drive the harvesting blade bolted to the inner wall of the installation groove to rotate and cut. When the corn straw pushed backward and downward by the propeller blade contacts the harvesting blade, it will drive the harvesting blade to rotate and cut, and push the cut corn straw downward. Thus, while harvesting the corn straw, the corn straw will move backward and downward in advance, avoiding the problem that the corn straw can only be pushed downward by the harvesting blade. Description of the Drawings

[0014] Figure 1 Schematic diagram of the overall structure of the cutter head of a corn harvester of the present utility model Figure I ;

[0015] Figure 2 Schematic diagram of the overall structure of the cutter head of a corn harvester of the present utility model Figure II ;

[0016] Figure 3 Cross-sectional schematic diagram of the overall structure of the cutter head of a corn harvester of the present utility model.

[0017] In the figure: 1, mounting plate; 2, rotary tool rest cylinder; 3, first mounting hole; 4, transmission shaft; 5, connecting frame; 6, propeller blade; 7, fixed ring; 8, installation groove; 9, second mounting hole; 10, harvesting blade. Detailed implementation manners

[0018] The following will clearly and completely describe the technical solutions in the embodiments of the present utility model with reference to the accompanying drawings in 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 of the embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without making creative efforts belong to the scope of protection of the present utility model.

[0019] Please refer to Figures 1-3 , the present utility model provides a technical solution: including a mounting plate 1 and a rotary tool rest cylinder 2. Four first mounting holes 3 are penetrated through the four corners of the mounting plate 1, and the number of the first mounting holes 3 is four, symmetrically distributed at the four corners of the first mounting plate 1 respectively, so that the mounting plate 1 can be bolted and fixed to the front end of the corn harvester through the first mounting holes 3;

[0020] The circumferential surface of the rear top end of the rotary cutter holder cylinder 2 is rotationally connected to the front side surface of the mounting plate 1 through a rotating shaft. A transmission shaft 4 is rotationally connected to the middle part of the mounting plate 1 through a rotating shaft passing through it, and the rear top end of the transmission shaft 4 is in transmission connection with the power device part of the corn harvester. A connecting frame 5 is welded to the outer surface of the transmission shaft 4, and the number of the connecting frames 5 is several, which are symmetrically distributed in sequence from front to back on the outer surface of the transmission shaft 4. The outer top ends of the connecting frames 5 are welded to the inner wall of the rotary cutter holder cylinder 2. When the power device part of the corn harvester drives the transmission shaft 4 to rotate, the transmission shaft 4 will drive the connecting frame 5 to rotate. When the connecting frame 5 rotates, it will drive the rotary cutter holder cylinder 2 to rotate. The diameter of the rotary cutter holder cylinder 2 gradually decreases from back to front in a conical shape. A propeller blade 6 is welded to the outer surface of the front end of the rotary cutter holder cylinder 2. When the rotary cutter holder cylinder 2 rotates, it will drive the propeller blade 6 to rotate. When the propeller blade 6 rotates and contacts the corn straw, under the acting force of the rotation of the propeller blade 6, the corn straw will be pushed backward and downward, thus playing a role in pre-pushing the corn straw backward and downward;

[0021] Three fixing rings 7 are welded to the outer surface of the middle and rear parts of the rotary cutter holder cylinder 2, which are symmetrically distributed in sequence from front to back on the outer surface of the middle and rear parts of the rotary cutter holder cylinder 2. Installation grooves 8 are formed on the outer surface of the fixing rings 7, and the number of the installation grooves 8 is several, which are rotationally symmetrically distributed on the outer surface of the fixing rings 7. A second installation hole 9 is formed through the middle of the installation groove 8. A harvesting blade 10 is bolted to the inner wall of the installation groove 8, and the harvesting blades 10 are alternately distributed on the outer surface of the middle and rear parts of the rotary cutter holder cylinder 2. When the rotary cutter holder cylinder 2 rotates, it will drive the fixing ring 7 to rotate. When the fixing ring 7 rotates, it will drive the harvesting blades 10 bolted to the inner wall of the installation groove 8 to rotate and cut. When the corn straw pushed backward and downward by the propeller blade 6 contacts the harvesting blades 10, it will be cut under the action of the rotating cutting of the harvesting blades 10 and the cut corn straw will be pushed downward, thus realizing that while harvesting the corn straw, the corn straw will move backward and downward in advance, thus avoiding the problem that the corn straw can only be pushed downward by the harvesting blades 10.

[0022] It should be noted that in this article, relational terms such as first and second are only used to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply any actual relationship or order between these entities or operations. Moreover, the term "including", "comprising" or any other variant thereof is intended to cover non-exclusive inclusion, so that a process, method, article or device including a series of elements not only includes those elements, but also includes other elements not expressly listed, or also includes elements inherent to such process, method, article or device.

[0023] Although embodiments of the present utility model have been shown and described, those of ordinary skill in the art can understand 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. A corn harvester cutter head, characterized in that: It includes a mounting plate (1) and a rotary tool holder cylinder (2). A transmission shaft (4) is rotatably connected through the middle of the mounting plate (1) by a rotating shaft. A connecting frame (5) is fixedly connected to the outer surface of the transmission shaft (4). The diameter of the rotary tool holder cylinder (2) gradually decreases from the rear to the front in a conical shape. A propeller blade (6) is fixedly connected to the outer surface of the front end of the rotary tool holder cylinder (2). A fixing ring (7) is fixedly connected to the outer surface of the middle and rear ends of the rotary tool holder cylinder (2). An installation groove (8) is formed on the outer surface of the fixing ring (7). A second installation hole (9) runs through the middle of the installation groove (8). A harvesting blade (10) is fixedly connected to the inner wall of the installation groove (8).

2. The cutter head of a corn harvester according to claim 1, wherein: First installation holes (3) run through the four corners of the mounting plate (1), and the number of the first installation holes (3) is four, which are symmetrically distributed at the four corners of the first mounting plate (1) respectively.

3. The cutter head of a corn harvester according to claim 2, characterized in that: The circumferential surface of the rear top end of the rotary tool holder cylinder (2) is rotatably connected to the front side surface of the mounting plate (1) by a rotating shaft. The rear top end of the transmission shaft (4) is in transmission connection with the power device part of the corn harvester.

4. The cutter head of a corn harvester according to claim 3, characterized in that: The number of the connecting frames (5) is several, which are symmetrically distributed in sequence from front to back on the outer surface of the transmission shaft (4), and the outer top ends of the connecting frames (5) are fixedly connected to the inner wall of the rotary tool holder cylinder (2).

5. The cutter head of a corn harvester according to claim 4, characterized in that: The number of the fixing rings (7) is three, which are symmetrically distributed in sequence from front to back on the outer surface of the middle and rear ends of the rotary tool holder cylinder (2).

6. The cutter head of a corn harvester according to claim 5, wherein: The number of the installation grooves (8) is several, which are rotationally symmetrically distributed on the outer surface of the fixing ring (7). The harvesting blades (10) are staggered and distributed on the outer surface of the middle and rear ends of the rotary tool holder cylinder (2).

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