JPS6340126Y2 - - Google Patents

Description

[Detailed Description of the Invention] The present invention relates to a straw cutting guide device in a straw cutter of a combine harvester.

In other words, the low-speed rotating shaft and the high-speed rotating shaft are horizontally installed parallel to each other with their heights being vertical. Small disc blades and large disc blades are arranged alternately in the axial direction so that the large and small disc blades of both shafts are intermeshing with each other. In this type of straw cutter for a combine harvester, which is constructed by fitting a plate blade, when cutting the waste straw that falls from above,
As shown in FIG. 6, first, the small disk blades 3, 3 of the low-speed rotating shaft 1 and the large disk blades 6, 6 of the high-speed rotating shaft 2 sequentially make a long primary cut, and then the middle part is cut at a low speed. Secondary cutting will be performed by the large disc blade 5 of the rotating shaft 1 and the small disc blade 4 of the high-speed rotating shaft 2, but the positions of the primary cutting and secondary cutting are above and below, and after the primary cutting As shown in the figure, the cut straw X is inclined with respect to the axial direction, resulting in the disadvantage that the cut length changes, becomes disordered, and gets caught between the blades.

The present invention solves these drawbacks, and provides a structure that can be easily cut into approximately the same length and can be suitably implemented with a simple structure.

Next, the embodiment shown in FIGS. 1 to 5 will be described.

Figure 1 shows a side sectional view of the straw cutter, and the straw cutter is installed inside the cutter housing B that is connected to the rear of the threshing section A, which is the rear of the combine harvester.
The straw cutter has a low-speed rotating shaft 1 mounted horizontally.
A high-speed rotating shaft 2 that is low and parallel to the shaft 1 is mounted behind the shaft 1, and small disc blades 3 and large disc blades 5 are alternately fitted to the low-speed rotating shaft 1 at predetermined intervals. At the same time, a collar 10 is interposed between each blade, and a high-speed rotating shaft 2
In this case, a large disc blade 6 that meshes with the small disc blade 3 and a small disc blade 4 that meshes with the large disc blade 5 are fitted alternately at predetermined intervals, and between each blade. A collar 11 is interposed between the two rotating shafts 1 and 2, and both ends of the rotating shafts 1 and 2 are mounted on metals 12, 13, 14, and 15 on both sides, respectively, and a large gear 16 is fitted to the extended end of the low-speed rotating shaft 1. , meshes with a small gear 17 fitted on the extended end of the high-speed rotating shaft 2, and transmits power to the input pulley 18 on the high-speed rotating shaft 2 side through a transmission belt 19, causing both rotating shafts 1 and 2 to reverse each other, resulting in a low It is installed and configured to rotate at high speed.

In addition, both rotating shafts 1 and 2 are connected to the upper rear of the threshing section A.
Up to the top of the gap, the straw discharge chain 20 and the clamping guide rod 2
1 is extended.

A vertical guide rod 7 is provided on the left side of the low-speed rotating shaft 1 that is close to the engagement side of each small disc blade 3, and the other end of each guide rod 7 is connected to a cutter housing B. are fixed to the inner surfaces of the high-speed rotating shaft 2 via fasteners 22.
A vertical guide rod 8 is provided on the right side near the engagement side of each large disk blade 6, and the other extending end of each guide rod 8 is fixed to the inner surface of the cutter housing B. They are each fixed via a tool 23 and installed so that the waste straw falls between each guide rod 7 and each guide rod 8.

Therefore, the large and small disc blades 5, 3 groups rotate at low speed as shown by arrow A, and the large and small disc blades 6,
The fourth group will rotate at high speed as shown by arrow B, and the straw carried out by the straw removal chain 20 will fall and be cut as shown by arrow C.
Since the meshing cutting point d between the small disc blade 3 and the large disc blade 6 is higher than the meshing cutting point E between the large disc blade 5 and the small disc blade 4, the straw is first removed at each meshing cutting point N. A long primary cut is made, and then the middle of the cut straw thus cut is to be secondly cut in half at each interlocking cutting point E and is discharged downward.

In that case, both ends of the primary cut straw X will be guided downward by the guide rods 3 and 8, and due to the guidance, the cut straw X will not be tilted in the axial direction as in the conventional case. As shown in Fig. 5, the large disk blade 5 and the small disk blade 4 form two
It will be disconnected next.

In this way, the present invention has a low-speed rotary shaft 1 and a high-speed rotary shaft 2, which are horizontally installed parallel to each other, with the heights being vertical. In a straw cutter for a combine harvester constructed by fitting small disk blades 3, 4 and large disk blades 5, 6, the side of each small disk blade 3 of the low speed rotation shaft 1 toward the meshing side and the high speed rotation shaft 2 Since vertical guide rods 7 and 8 are installed on the sides of each of the large disc blades 6 near the meshing side, the small disc blade 3 and the large disc blade 6 can perform a long primary cut. After that, large disc blade 5 and small disc blade 4
This makes it possible to support and guide both ends of the cut straw that is to be cut long by the guide rods 7 and 8 when cutting it into short lengths in half. It has the advantage of being able to cut well without changing, becoming disordered, or getting stuck between the blades, and having a simple structure that allows it to be suitably implemented.

[Brief explanation of drawings]

Fig. 1 is a side sectional view of a straw cutter which is an embodiment of the present invention, Fig. 2 is a plan view of the straw cutter, Fig. 3 shows a part of Fig. 1, and Fig. 4 shows each disc blade. A side view, FIG. 5 is an enlarged view of a part of FIG. 2, and FIG. 6 shows a conventional example. 1...Low speed rotation axis, 2...High speed rotation axis, 3, 4
...Small disk blade, 5,6...Large disk blade, 7,8...
Guide rod.

Claims (1)

[Scope of utility model registration request] The low-speed rotary shaft 1 and the high-speed rotary shaft 2 are horizontally installed parallel to each other, with the heights being vertical. Small disc blades 3 and 4 are arranged alternately in the axial direction so that the large and small disc blades of both shafts are in mesh with each other.
In a straw cutter for a combine harvester, which is constructed by fitting large disc blades 5 and 6, the side of each small disc blade 3 on the low-speed rotating shaft 1 close to the meshing side and each large disc blade 6 on the high-speed rotating shaft 2 A guide device for cutting straw, characterized in that vertical guide rods 7 and 8 are respectively installed on the sides of the mating side.