JPH0541661Y2 - - Google Patents

Description

[Detailed Description of the Invention] [Industrial Application Field] The present invention relates to a stem culm cutting device that can change and adjust the cutting length of a stem culm in multiple stages.

[Prior art and problems]

This conventional seed culm cutting device uses a rotary blade on the high speed side with different diameters compared to the rotary receiving blade on the low speed side, and changes the stem culm cutting length in multiple stages by adjusting the relative approach and separation of the two. I was trying to adjust it.

Although the rotating blade on the high-speed side has a stronger feeding force during cutting than the rotating receiving blade on the low-speed side, the rotating blade on the high-speed side was configured with different diameters. Particularly in the case of long cuts, the feeding force acts only on the large-diameter rotary blade and does not act on the small-diameter rotary blade, resulting in a reduction in cutting throughput.

[Means for solving problems]

The present invention aims to solve these problems and takes the following technical measures. That is, the technical means according to the present invention is such that the disk-shaped rotary blades 8 are placed in parallel with each other at appropriate intervals in the direction of the rotation axis, facing the high-speed rotary blade mechanism 3b.
A low-speed rotating receiving blade mechanism 3 in which disk-shaped rotating receiving blades 6 are arranged in parallel at appropriate intervals in the direction of the rotation axis
In the stem culm cutting device, the rotating blades 8 on the high speed side all have the same diameter, and the rotating blades 6 on the low speed side have a large diameter receiving blade 6a and a small diameter receiving blade 6b with different rotation diameters. By appropriately combining and arranging the high-speed rotary blade mechanism 3b and the low-speed rotary receiving blade mechanism 3a in such a manner that their relative approach and separation can be adjusted, the cutting length of the stem culm can be changed in multiple stages. It is characterized by:

[Effect]

When the high-speed rotary blade mechanism 3b and the low-speed rotary receiving blade mechanism 3a are placed close to each other as shown in Fig. 2, each rotary blade 8 on the high-speed side and the large and small rotating blades 6 on the low-speed side
A state in which the stem culm is cut short is created by the cooperation of a...6b..., and as shown in Fig. 3, both mechanisms 3
When a and 3b are separated, the stalk culm is cut relatively long by the cooperative action of the large-diameter rotating receiving blade 6a on the low-speed side and the corresponding rotating blade 8 on the high-speed side. A state appears.

[Effect of idea]

Therefore, according to the present invention, the cutting length of the stem culm can be arbitrarily changed and adjusted by moving the two mechanisms relatively close to each other or separating them. Because all the rotating blades have the same diameter, the feeding force acting on the low-speed rotating blade mechanism against the stem culm is always strong, even when cutting short or long pieces, and the high-speed side Compared to rotary blades with different diameters, the cutting capacity can be significantly increased.

〔Example〕

An embodiment of the present invention will be described below based on the drawings.

The figure shows a stalk culm cutting device 3 installed at the rear of a threshing section 1 mounted on a combine harvester. It is designed to be fed in a sideways posture through a carry-out chain 2.

To explain the stem culm cutting device 3 in detail, a low-speed rotary shaft 5 horizontally mounted on the side of the threshing section 1 in a position parallel to the straw discharged has a disc-shaped rotary receiving blade 6...
A low-speed rotary receiving blade mechanism 3a is formed by arranging and fixing the following at appropriate intervals in the axial direction; A high-speed rotary blade mechanism 3b, which is made up of rotary blades 8 .

The low-speed rotary blade mechanism 3a is configured in such a manner that large-diameter blades 6a... and small-diameter blades 6b are appropriately combined and arranged, and the high-speed rotary blade mechanism 3b
The rotating blades 8... are all configured to have the same diameter, and the large diameter receiving blades 6a... and the small diameter receiving blades 6b...
are arranged opposite to each other.

9 is an input shaft, and an input pulley 10 is fixed to the outer end.
The chain 13 is connected to the transmission sprocket 11 fixed to the input shaft 9 and the sprocket 12 fixed to the high-speed rotating shaft 7 through a tension sprocket. is wound, and the small-diameter transmission gear 14 fixed to the input end 9 and the large-diameter transmission gear 15 fixed to the low-speed rotating shaft 5 are meshed, so that both shafts 5 and 7 are connected to each other. They are interlocked so that they can rotate inwardly and in opposite directions.

The high-speed rotating shaft 7 is supported so as to be swingable in the direction of distance from and near the low-speed rotating shaft 5 through an elongated hole 18 centered on a support shaft 17 provided in the cutter case 16. After being adjusted to the separated state, this state is fixed via a lock pin 19.

[Brief explanation of the drawing]

The drawings show one embodiment of this invention, in which FIG. 1 is a vertical side view of the stem culm cutting device, and FIGS. 2 and 3 are developed longitudinal rear views showing the cutting length switching state. 3 is a stem culm cutting device, 3a is a low-speed rotating receiving blade mechanism, 3b is a high-speed rotating blade mechanism, 5 is a low-speed rotating shaft, 6
is a rotating receiving blade, 6a is a large diameter receiving blade, 6b is a small diameter receiving blade,
7 indicates a high-speed rotating shaft, and 8 indicates a rotating blade.

Claims (1)

[Scope of utility model registration request] Opposing the high-speed rotary blade mechanism 3b in which disc-shaped rotary blades 8 are arranged in parallel at appropriate intervals in the direction of the rotation axis, a disc-shaped rotary receiving blade 6 is placed in the direction of the rotation axis in correspondence with the rotary blade 8. In a stem culm cutting device comprising low-speed rotary receiving blade mechanisms 3a arranged in parallel at appropriate intervals, the rotating blades 8 on the high-speed side all have the same diameter, and the rotating receiving blades 6 on the low-speed side have the same rotational diameter. By arranging the large-diameter receiving blade 6a and the small-diameter receiving blade 6b, which have different diameters, in appropriate combinations and arranging them in parallel, and configuring the high-speed rotating blade mechanism 3b and the low-speed rotating blade mechanism 3a to be able to freely adjust their relative approach and separation, A stem culm cutting device characterized in that the stem culm cutting length is configured to change the stem culm cutting length into multiple steps.