JPS62269623A - Straw fine cutting apparatus - Google Patents

Abstract

(57) [Summary] This bulletin contains application data before electronic filing, so abstract data is not recorded.

Description

[Detailed description of the invention] 3. Detailed description of the invention [Industrial application field] The present invention relates to a stem culm shredding device.

[Conventional technology]

Conventionally, as a stem culm shredding device, for example,
There is a device having a structure shown in Publication No. 260, and the cited stem culm shredding device uses two rotary cutters each having a large number of cutting blades at a predetermined interval in the axial direction. The rotary cutters are set so that they overlap and their axes are parallel to each other, and the rotary cutters are driven with different rotational speeds, so that there is no stem between the rotary cutters. It is configured to cut the stem culm into pieces by a predetermined length by supplying the culm.

[Problem that the invention seeks to solve]

Generally, a stem culm shredding device configured as in the above-mentioned reference is used to discharge threshed stem culms into pieces (often installed in a combine harvester).

In order to make it easier to plow the stem culm into the ground when working with a rotary tiller, it is desirable to cut the stem culm to a short length. In such cases, it is desirable to have a stem culm with a long shredded length so that the shredded straw that has been plowed in does not float on the field surface filled with water. Shredding equipment is required.

An object of the present invention is to provide a stem culm shredding device which can change the cutting length of the stem culm and can feed the stem culm as smoothly as possible during shredding with a rational configuration.

[Means for solving problems]

A feature of the present invention is that a first rotary cutter having a large number of cutting blades in the axial direction is provided in a fixed position, and the cutting blades provided on one side are arranged at intervals in the axial direction of the cutting blades on the other side. A second rotary cutter and a third rotary cutter are provided, which have a different arrangement interval in the axial direction of the cutting blades, and whose respective axes are parallel to the axis of the first rotary cutter, and these second rotary cutters and a third rotary cutter are arranged side by side under the road in a constantly driven state, and when one of the second rotary cutter or the third rotary cutter approaches and overlaps the first rotary cutter, the other rotary cutter is connected to the first rotary cutter. The shredding length switching structure is configured so as to be separated from the cutting length while facing the cutting length, and its functions and effects are as follows.

[For production]

If the above features are configured as shown in FIGS. 2 to 7, for example, when the positions of the second and third rotary cutters (4) and (5) are set to the state shown in FIG. 1 (A), the supply After the stem culm is scraped downward by the rotational driving force of the second rotary cutter (4), it is passed through the first and third rotary cutters (3),
(5) and the second and third rotary cutters (4) to the state shown in FIG. 1 (TI).

When position (5) is set, the supplied stem culm is the first,
After being shredded between the second rotary cutters (3) and (4), it is scraped downward by the rotational driving force of the third rotary cutter (5).

In other words, the cutting length of the stem culm can be changed by switching the positions of the two rotary cutters, and by driving the rotary cutter that does not have a cutting action, a feeding action is applied to the stem culm.

〔Effect of the invention〕

Therefore, a stem culm shredding device that can change the cutting length of the stem culm and smoothly feed the stem culm during shredding has been obtained.

〔Example〕

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

As shown in Figure 1 (a), at the rear of the combine harvester body,
A stem culm shredding device (A) and a stem culm binding device (not shown) are sequentially connected to shred the stem culm sent out by the straw removal conveyance chain (2) from the threshing device (1) mounted on the vehicle body. The discharge stem and culm processing structure is configured to enable discharge or bundled discharge.

The stem culm shredding device (A) is configured so that the shredding length can be switched between long and short.

That is, as shown in FIGS. 6 and 7, the stem culm shredding device (^) is equipped with a large number of cutting blades (3a) in the direction of the axis (P) facing in the left-right direction of the vehicle body, and A first rotary cutter (3) disposed in a fixed position, a first rotary cutter (3) disposed behind the first rotary cutter (3) on an axis (Q) parallel to the first rotary cutter (3), and The cutting blade (3a) of the first rotary cutter (3)
)... arrangement interval (D2) larger than the arrangement interval (Dl)
A second rotary cutter (4a) equipped with a large number of cutting blades (4a)...
4), the cutting blade (3a) of the first rotary cutter (3) is disposed substantially below the second rotary cutter (4) on the axis (R) parallel to the first rotary cutter (3); )... placement interval (
Dl) and a third rotary cutter (5) equipped with a large number of cutting blades (5a) at equal intervals (D1), and as shown in Fig. 1 (a), the first rotary cutter (3) Cutting blade (
3a) and the cutting blade (4a) of the second rotary cutter (4), by setting the relative position so that they overlap, approximately 200n
In addition, as shown in FIG. 1 (rl), the cutting blade (3a) of the first rotary cutter (3) and the second
By setting the relative position of the rotary cutter (4) and the cutting blade (4a) so that they overlap, a fine shredding length of 50n+ is obtained.

In addition, the stem culm shredding device (A) has second and third rotary cutters (
4) In order to reduce the installation space for (5), the second rotary cutter (4) or the third rotary cutter (5) is used when changing the shredding length, as shown in Fig. 8 (A) and (II). )
a first rotary cutter (3) with one of the cutting blades close to the other;
The other cutting blade is close to the back side of the − side of the cutting blade (3a), and the second and third rotary cutters (4) are located close to each other when viewed in the axial direction.
, (5) respective cutting blades (4a).

(5a) are overlapped, respectively Φ cutting blade (3a)...
The relative positions of (4a)..., (5a)... are set.

In addition, the stem culm shredding device (^) has a shredding length switching structure and a driving structure as follows.

That is, as shown in FIGS. 2 to 5, the first rotating shaft (3b) of the first rotating cutter (3) is connected to the left and right side walls (6),
The second and third rotating cutters (4) and the second and third rotating shafts (4b) of (5) are supported in an idling state by (6).

(5b) is freely rotatably supported by supporting members (7), (7) which are swingably provided on the left and right side walls (6), (6), respectively.

In addition, the support members (7) and (7) are connected to the second and third rotating shafts (
4b).

(5b) Provided on the left and right side walls (6), (6) via swing shafts (8), (8)' formed at the midpoints of the straight lines connecting the respective axes (Q) and (R). , the support member (7
), (7), the left and right walls (6)
, (6) have second and third rotating shafts (4b), (5
A long hole (6h) through which the hole b) is inserted is formed.

As shown in FIGS. 4 and 5, a large diameter gear (9) is attached to the outer end of the left side wall (6) of the first rotating shaft (3b), and similarly, the second and third rotating shafts Axis (4b).

There is also a small diameter gear (10) on the outside of the left side wall (6) of (5b).
.

(10) is attached, and second and third rotary cutters (4).

(5) The gears are positioned so that the small diameter gear (10) on the side that performs the cutting action meshes with the large diameter gear (9), and furthermore, the second and third rotating shafts (4b) and (5b) respectively Pulleys (11) and (11) of the same diameter are attached to the left outer end of.

Moreover, as shown in FIG. 3, the two pulleys (11),
An endless bell (12) is wound between (11) and tension is applied by a tension pulley (13), and the left swing shaft (8) is connected to the large diameter gear (
A gear (14) that is always engaged with the gear 9) is freely rotatably supported.

Furthermore, a large force pulley (15) that drives the gear (14)
is provided coaxially with the swing shaft (8), and the input pulley (15) and the output pulley (16) provided on the threshing device (1)
) is wound around the endless bell (17), which inputs the power from the threshing device (1) to the pulley (15) and the gear (14).
), then sequentially transmitted to the large diameter gear (9) and the first rotating cutter (3)
At the same time, the power from the large-diameter gear (9) is transmitted to one of the small-diameter gears (10) to drive the rotary cutter on this side at a lower speed than the first rotary cutter (3). Power is provided by pulley (11) and endless belt (12)
, the rotary cutter on the other side is also driven at low speed by sequentially transmitting the information to the pulley (11). still,
A tension force is applied to the endless bell (17) wound between the output pulley (1G) and the large force pulley (15) by a tension pulley (18).

Incidentally, when changing the cutting length of the stem culm, the posture of the support member (7) is manually changed, and by this operation, the shape shown in Fig. 1 (()
, As shown in (D), the second and third rotary cutters (4)
, (5) position change is performed.

In addition, as shown in FIGS. 6 and 7, the first, second, and third
The rotary cutters (3), (4), and (5) have cutting blades (3a), (4a), and (5a), respectively.
Spacers (3c), (4c), (5c), etc. are used to maintain the distance between... and to prevent the stem culm from wrapping around.
・ is provided.

Incidentally, when discharging the stem culm sent out by the straw removal conveyance chain (2) into pieces, the stem culm shredding device (A)
At the same time, the rear part of the first rocking plate (19) provided at the front of the upper part of the stem culm shredding device (A) is swung downward. This is done by swinging the stem upward to form a guide path to the stem culm shredding device (A).

Embodiment C] In addition to the embodiments described above, the present invention may also be configured such that the first rotary cutter is set to high speed rotation, the second and third rotary cutters are set to low speed rotation, and the shredding length of the second rotary cutter is The length may be set smaller than the shredding length of the third rotary cutter.

[Brief explanation of the drawing]

The drawings show an embodiment of the stem culm shredding device according to the present invention.
Figure (a) is a side view showing the installation position etc. of the shredding device, Figure 1 (b) is a side view showing the shredding device with the shredding length changed, and Figure 2 is the side view showing the shredding device. Figure 3 is a side view showing the transmission system to the device; Figure 3 is a side view showing the drive system of each rotary cutter;
5 and 5 are side views showing the transmission structure with the shredding length changed respectively, FIGS. 6 and 7 are sectional views showing the second and third rotary cutters, and the first rotary cutter, Figure 8 (a)
, (TI) are schematic diagrams showing the relative positions of the cutting blades when the shredding length is changed. (3)...First rotating cutter, (3a)...
...cutting blade of the first rotary cutter, (4)...second
Rotary cutter, (4a)... Cutting blade of second rotating cutter, (5)... Third rotating cutter, (5a).
...Cutting blade of third rotary cutter, (P)...
・Axis of the first rotating cutter, (Q)...Axis of the second rotating cutter, (R)...Axis of the third rotating cutter.

Claims (1)

[Claims] A first rotary cutter (3) comprising a large number of cutting blades (3a) in the axial direction (P) is provided in a fixed position, and the cutting blades (4a) provided on one side are arranged in the axial direction. Arrangement interval (D
_2) is different from the arrangement interval (D_1) in the axial direction of the cutting blade (5a) provided on the other one, and the respective axes (Q) and (R) are different from the first rotary cutter (3). ), the second rotary cutter (4) and the third rotary cutter (4) are parallel to the axis (P) of the
5), and the second rotary cutter (4) and the third rotary cutter (5) are installed side by side under the road in a constantly driven state, and the second rotary cutter (4) or the third rotary cutter (4) is A stem culm shredding device configured with a shredding length switching structure such that when one side approaches and overlaps the first rotary cutter (3), the other side faces the first rotary cutter (3) and separates from it. .