JPH07184445A - Second reaping blade device for combine harvester - Google Patents

Abstract

PURPOSE:To raise efficiency of reaping operation by making a second reaping blade device for a combine harvester approach a table when the blade device is housed at the upper side and separating the blade device from the table when at the lower side in the vertical movement of the second reaping blade device for the combine harvester. CONSTITUTION:The front of a reaping part A is equipped with a first reaping blade device 10 for highly cutting planted grain culms and the rear is provided with a second reaping blade device 4 for low cutting remaining culms after reaping by the first cutting blade device 10. A second reaping blade supporting device 13 which can change the attitude of the second reaping blade device 4 upward, make the second reaping blade device approach the lower rear part of a table 6 in the reaping part A, fix the blade device, change the attitude of the second reaping blade device downward and fix the second reaping blade device at the lower rear side separated from the lower part of the table 6 and close to the lower front side of a traveling device 2 is installed.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a combine second cutting blade device.

[0002]

2. Description of the Related Art As shown in FIG. 4, a conventional second cutting blade device 8 of a mowing section A extends from a lower position immediately after the table 6 of the mowing section A upward along a rear end of the table 6. It is configured to move.

[0003]

With the second combine cutting blade device of the combine as described above, as shown in FIG.
The culm cut by the first cutting blade device 10 is reaped while being pressed against the table 6 from above, so that the cutting posture of the culm becomes unstable and unevenness occurs in the cut. It was in an irregular cutting condition. Furthermore, the culm cut by the second cutting blade device 8 stagnates on the frame 11 of the second cutting blade device 8 and in front of the support column 12, and the load of the second cutting blade device 8 increases, so that the cutting work However, there is a drawback that the second cutting blade device 8 is damaged. Therefore, the present invention is intended to solve the above problems.

[0004]

A second cutting blade device for a combine according to the present invention solves the above problems and has the following structure. That is, the second cutting blade device of the combine can change the posture of the second cutting blade device 4 to the upper side and fix the second cutting blade device 4 immediately after the lower part of the table 6 in the combine of the above-described configuration shown in FIG. Second harvest of the combine provided with the second cutting blade support device 13 that can be fixed by changing the posture to the side and being fixed to the lower rear side away from the lower part of the table 6 and to the lower front side of the traveling device 2. It was a blade device.

[0005]

When the second cutting blade device 4 is moved to the lower side of the working state by the second cutting blade support device 13, the distance between the second cutting blade device 4 and the table 6 of the cutting section A becomes wide. At the same time, the interval between the second cutting blade device 4 and the traveling device 2 becomes narrower. Therefore,
The remaining culm is smoothly cut by the second cutting blade device 4 without being pressed by the table 6. Further, since the traveling device 2 scrapes the culm cut by the second cutting blade device 4 to the rear side, the culm is not stagnant in the second cutting blade device 4. Further, when the second cutting blade device 4 is housed in the upper side by the second cutting blade support device 13, the interval between the second cutting blade device 4 and the table 6 becomes narrower, so the second cutting blade device 4 is The table 6 protects against obstacles from the ground surface.

[0006]

1 and 2 show a combine equipped with an embodiment of the present invention. The traveling device 2 is provided below the traveling frame 1, the threshing device 3 is provided above the traveling frame 1, and the mowing unit A is provided at the front.
The first cutting blade device 10 for cutting the planted grain culm in the front part of the cutting part A, and the remaining part cut by the first cutting blade device 10 in the rear part. The second cutting blade device 4 for cutting the culm is used as the second cutting blade support device 13
The cylinder 5 is configured to be movable up and down and fixed.

Next, the specific construction of the second cutting blade support device 13 and the movement of the second cutting blade device 4 will be described. The second cutting blade device 4 is supported and fixed by a shaft 13a in the left-right direction with respect to the traveling direction of the cutting unit A of the second cutting blade support device 13. Axis 1
An end of a cylinder expansion / contraction shaft 5a of the cylinder 5 is rotatably supported near the center of 3a. Further, the end of the cylinder 5 on the opposite side of the cylinder expansion / contraction shaft 5a is attached to the table 6 of the cutting unit A.
Is rotatably supported on the upper part of. FIG. 3 shows a link mechanism diagram of the second cutting blade support device 13. The lower ends of the plates 13b and 13c are rotatably supported on both sides of the shaft 13a, and the rear ends of the plates 13d and 13e are rotatably supported on the upper ends of the plates 13b and 13c, respectively. It is provided. Front ends of the plates 13d and 13e are rotatably provided on the frame body of the table 6. Also, the shaft 13a
The rear ends of the plates 13f and 13g are rotatably provided near the plates 13b and 13c, respectively. Plate 13d and plate 13
The plate 13f and the plate 13g are located below e, and the front end thereof is rotatably provided on the table 6.

The second cutting blade device 4 moves up and down by the link mechanism and the cylinder 5 described above. That is, as shown in FIG. 1, when the posture of the second cutting blade device 4 is changed to the upper side, the second cutting blade device 4 approaches the lower portion of the table 6 and the distance between the rear end of the table 6 becomes narrower. It is supported by the supporting device 13. Further, as shown in FIG. 5, when the posture of the second cutting blade device 4 is changed to the lower side by the second cutting blade support device 13, at the rear lower position apart from the rear end lower portion of the table 6, and It is supported by the second cutting blade support device 13 so as to approach the lower part of the front part of the traveling device 2, that is, the distance to the table 6 is wide and the distance to the traveling device 2 is narrow.

When the cylinder expansion / contraction shaft 5a expands / contracts in the longitudinal direction when oil is injected into and discharged from the cylinder 5, as described above, the second cutting blade device 4 passes through the second cutting blade support device 13 which is a link mechanism. To move. Further, as shown in FIG. 6, the second cutting blade device 4 may be supported and moved. That is, the both ends of the second cutting blade device 4 are connected to the shaft 15 and the shaft 15
The lower end of a is supported, the upper end side is rotatably supported on the traveling frame 1, and the upper end side is attached to the motor 14 provided on the traveling frame 1. Then, the second cutting blade device 4 includes the shaft 1
5, one of the shafts 15a is rotatably connected by a motor 14a, and the lower side is rotatably supported by the traveling frame 1. With the above structure, when the shaft 15 and the shaft 15a are rotated by the motor 14, the second cutting blade device 4 is moved up and down. Since the direction of the cutting blade surface of the second cutting blade device 4 changes between the stored state in which the cutting blade device 4 is moved upward and the working state in which it is moved downward, the second cutting blade device 4 is rotated by the motor 14a. Then, the cutting blade surface of the second cutting blade device 4 is readjusted parallel to the ground. In this case, when the second cutting blade device 4 is housed on the upper side, if the cutting blade 4a is further rotated by the motor 14a so as to face the upper side, obstacles from the ground surface are further prevented.

Next, FIGS. 7 and 8 will be described. A cover 16 is provided behind the table 6 of the reaping unit A so as to cover the side surface of the machine body. An engine 17 is arranged on the traveling frame 1 on the right rear side of the reaping section A. The cover 16 is configured to be adjustable in the front-back direction with respect to the traveling direction of the reaping section A. A configuration for adjusting the cover 16 in the front-rear direction will be described. As shown in FIG. 8, the cover 16 is provided with an elongated hole 16 a and is fixed to the cover 21 with bolts 22. When the cover 16 is moved to approach the rear side of the reaping section A, the bolt 22 is loosened, the cover 16 is slid forward, and the bolt 22 is tightened again to stop the cover 16. The cover 21 has bolts 23
It is a structure fixed to the table 6 by.

When performing a mowing operation, the cover 16 is moved rearward to move away from the rear side of the mowing section A, except for the soybean mowing operation. Then the engine 17
The cooling air from is guided to the vicinity of the second cutting blade device 4 by the cover 16, convection occurs around the hydraulic device 18 in the vicinity thereof, the ambient temperature is cooled, and the tendency of the hydraulic device 18 to become hot is prevented. To be done. The cover 16 also serves as a guide for protecting crops. During the soybean cutting operation, when the grain culm cut by the first cutting blade device 10 is conveyed by the elevator 19, a large amount of dust is generated, which adversely affects the engine 17 and the hydraulic device 18. Was being given. Therefore, on the bottom surface of the elevator 19, only in the portion corresponding to the passage of the cooling air from the engine 17,
The blind holes 20 are provided, the cover 16 is moved to the front side, and the cooling air from the engine 17 is discharged to the side of the cutting section A together with dust. As a result, when soybeans are mowed, dust is not accumulated on the engine 17, the hydraulic device 18, etc., so that there is no failure due to the influence of dust and no extra cleaning is required.

From the above-mentioned contents, when the second cutting blade device 4 is moved to the upper side of the stored state by the second cutting blade supporting device 13, the second cutting blade device 4 and the table 6 of the cutting section A are moved. Since the distance from the rear end is narrowed, obstacles from the ground surface are protected by the table 6, and damage to the second cutting blade device 4 and the second cutting blade support device 13 can be prevented. Further, when the second cutting blade device 4 is moved to the lower side of the working state by the second cutting blade support device 13, the distance between the second cutting blade device 4 and the table 6 of the cutting unit A becomes wide, In addition, since the distance between the second cutting blade device 4 and the traveling device 2 is narrowed, the second cutting blade device 4 can smoothly mow the residual culm after returning to a state where it is not pressed against the table 6. Further, by the traveling device 2, the second cutting blade device 4
Since the culm that has been cut by is scraped to the rear side, the culm does not become stagnant in the second cutting blade device 4 part, and the second cutting blade device 4 and the power transmission system are not overloaded, and the ability of the cutting work is improved. The second cutting blade device 4 and the second cutting blade support device 13 can be prevented from being damaged without falling off.

[0013]

As described above, the present invention provides the second cutting blade device 4
When the second cutting blade support device 13 is moved to the lower side of the working state, the distance between the table 6 and the traveling device 2 is narrowed and the distance between the traveling device 2 is narrowed. After being pressed by the table 6 and returning to a natural body in an upright state where it is not pressed, the second cutting blade device 4 smoothly cuts. Furthermore, since the culm cut by the second cutting blade device 4 is scraped to the rear side by the traveling device 2, the culm does not stagnate in the portion of the second cutting blade device 4, and the second cutting blade device 4 and the power are removed. It is possible to prevent the second cutting blade device 4 and the second cutting blade support device 13 from being damaged without an extra load being applied to the transmission system and the ability of the cutting work being reduced. Further, when the second cutting blade device 4 is housed on the upper side by the second cutting blade support device 13, the space between the second cutting blade device 4 and the table 6 becomes narrower, so that the obstacle from the ground surface is protected by the table 6, The cutting blade device 4 and the second cutting blade support device 13 can be prevented from being damaged.

[Brief description of drawings]

1] Side view

2 is a plan view

[Figure 3] Link mechanism diagram

FIG. 4 is a conventional side view.

[Fig. 5] Side view during work

FIG. 6 Side view

FIG. 7 is a plan view.

FIG. 8 is a side view

[Explanation of symbols]

A Mowing unit 1 Traveling frame 2 Traveling device 3 Threshing device 4 Second cutting blade device 4a Cutting blade 5 Cylinder 5a Cylinder expansion / contraction shaft 6 Table 7 Frame 8 Conventional second cutting blade device 9 Strut 10 First cutting blade device 11 Frame 12 Post 13 Second cutting blade support device 13a Shaft 13b Plate 13c Plate 13d Plate 13e Plate 13f Plate 13g Plate 14 Motor 14a Motor 15 Shaft 15a Shaft 16 Cover 16a Slot 17 Engine 18 Hydraulic system 19 Elevator 20 Blind hole 21 Cover 22 23 Volts

Claims (1)

[Claims] 1. A combine having a traveling device 2 at a lower portion of a traveling frame 1, a threshing device 3 at an upper portion thereof, and a mowing portion A at the front thereof, wherein a planted grain is provided at a front portion of the mowing portion A. The first cutting blade device 10 for cutting the culm high, the second cutting blade device 4 for cutting the remaining culm after cutting by the first cutting blade device 10 at the rear part, and the second cutting blade device 4 on the upper side The posture can be changed to a position closer to the rear of the lower portion of the table 6 in the cutting unit A, and can be fixed to the lower side, and the posture can be changed to the lower side at the rear lower side apart from the lower portion of the table 6 and the traveling device 2 A second cutting blade device for a combine, comprising a second cutting blade supporting device 13 which is capable of approaching and fixing to the lower front side.