JPH05316865A - Threshing device - Google Patents

Abstract

PURPOSE:To carry out diffusion and release of discharge straw after cutting treatment as well by using a dust collecting and discharging dust fan for carrying out discharge of selection wind in a threshing part. CONSTITUTION:An axial flow dust collecting and discharging fan 35 having a rotating shaft faced in the longitudinal direction of a machine body is provided at the lower position of the fourth conduit 38 in the rear of a threshing drum 6 and simultaneously a wind direction plate 49 for guiding discharge wind from the dust collecting and discharging fan 35 is provided between the dust collecting and discharging fan 35 and discharge straw cutting devices 36 equipped with the rear of the dust collecting and discharging dust fan 35.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a threshing device in a combine, for example, in which a grain culm cut by a mowing section is threshed and selected by a threshing section.

[0002]

2. Description of the Related Art Conventionally, in a multi-row cutting combine, after the threshing of the straw after threshing is cut by the straw cutter, it is necessary to diffuse the straw almost into the number of cutting rows. The straw after cutting was diffused and released to the field by installing a straw diffusing device separately.

[0003]

However, in the case of such means for discharging straw, it is necessary to install a straw diffuser and a diffusion guide plate of the diffuser, which complicates the structure and increases the cost. There was a problem such as.

[0004]

SUMMARY OF THE INVENTION Therefore, according to the present invention, an axial-flow intake / exhaust dust fan is provided at the lower position of the gutter on the rear side of the handle cylinder so as to face the rotary shaft in the longitudinal direction of the machine body, and is arranged behind the intake / exhaust dust fan. By installing a wind direction plate that guides the exhaust air from the fan to the installed straw cutting device, the exhaust air of the intake and exhaust fan that sucks and discharges the sorting air is effectively used to diffuse the cutting straw. In addition to eliminating the conventional straw diffusing device that was previously installed, the structure can be made compact, and the smooth discharge of the sorting air from the threshing section is promoted to improve the stability of threshing performance. Is something that can be done.

[0005]

Embodiments of the present invention will now be described in detail with reference to the drawings. FIG. 1 is a cross-sectional explanatory view of a threshing unit, FIG. 2 is an overall side view of the combine, and FIG. 3 is a plan view of the combine, in which (1) is a track frame equipped with a traveling crawler (2), and (3) is A machine stand installed on the track frame (1), (4)
Is a threshing section in which the feed chain (5) is stretched on the left side and the handling cylinder (6) and the processing cylinder (7) are built in, and (8) is a cutting blade (9) and a grain culm transport mechanism (10). A reaper,
(11) is an straw processing unit that faces the end of the straw chains (12) and (13), (14) is a driver's cab provided with a driver's seat (15) and a driving operation unit (16), and (17) is the threshing unit. (4)
A grain tank for storing the grain from the via a lifting cylinder (18),
(19) is an upper discharge auger for taking out the grains in the grain tank (17) to the outside of the machine, and is configured to continuously perform cutting and threshing work.

Further, as shown in FIGS. 4 to 5, (20) in the drawings is a handling chamber in which an axial flow type handling barrel (6) axially mounted in the longitudinal direction of the machine body is installed, and (21) is the above-mentioned handling chamber. Handling room (20)
A handling opening for inserting a grain culm into the container, (22) a crimp net stretched under the handling room (20), and (23) a handling room (2).
0) communicating with the processing cylinder (7) through the opening (24) to stretch the crimping net (25) under the processing cylinder (7), (26)
Is a rocking sorter which is rockably supported in the front-rear direction via a rocking link (26a), and the crimping net (25)
The feed pan (27) located below, the chaff sheave (29) located below the rear part of the crimp net (25) and the dust outlet (28), and the gren sheave (30) disposed below the chaff sheave (29). And the Straw rack (31) connected to the rear side of the chaff sheave (29) constitute the swing selection board (26).

Further, reference numeral (32) in the figure denotes the sorting board (2).
6) Karatsu that feeds the sorting wind in the direction, (33) is the first conveyor that communicates with the fried cylinder and takes out the grains to the grain tank (17), and (34) is the swing sorting of the second product. The No. 2 conveyor for returning to the board (26), and (35) is an axial flow type dust collection and exhaust fan arranged above the Straw rack (31) and threshed by the handling cylinder (6) and the processing cylinder (7). The grains are sorted by the rocking sorter (26) and only the sized grains are taken out to the grain tank (17), and the straw is drained in the straw chain (12).
It is configured to be sent to the straw processing unit (11) via (13) and discharged to the outside of the machine after being cut by a cutting cutter (36) which is a straw cutting device.

The processing cylinder (7) is parallel to the handling cylinder (6),
The dust collecting fan (35) is arranged on the right side of the rear portion of the handling cylinder (6), and the dust collecting fan (35) is arranged on the left side of the processing barrel (7) behind the handling barrel (6). The rotating shaft (39) of the suction / exhaust fan (35) is made to face the front and rear direction of the machine at a lower position of the fourth gutter (38) slightly forward of the dust outlet (37), and the fan (35) is seen from the rear. 35) is rotated counterclockwise counterclockwise, and a fan partition wall guide plate (40) having a shape substantially along the outer peripheral locus of the fan (35) is provided between the fan (35) and the right processing cylinder (7). The partition wall (4) downward from the 4th gutter (38) so as to be installed over the front and rear sorting air duct widths.
1), the guide plate (40) prevents the leaked matter from the processing cylinder (7) from being directly discharged to the outside of the machine due to diffused reflection of the leaked matter, and the fan (35). It is configured to improve the suction effect in.

As shown in FIG. 6, the dust suction fan (3
5) is a threshing unit in which a fan drive case (43) supporting a fan rotation shaft (39) is integrally connected to a gear case (44) fixed to the threshing left side plate (4a) and driven by the output of the engine (45). The input shaft (46) of the gear case (44) is interlockingly connected to the threshing drive system (2nd conveyor (34)) of (4), and the blades (35a) of the suction and discharge fan (35).
Rotating the slab, and blowing out the sorting wind from the Karato (32) that passes through the chaff sheave (29) along the upper surface of the No. 4 gutter (38) from the No. 4 mouth (47) to the cutting cutter (36) side. No, 3 along the inside of No. 4 gutter (38)
It is configured so that it can be discharged to the machine body more efficiently than the guard (48).

Further, the suction / exhaust dust fan (35) has a cone-shaped airflow direction portion (35) spreading toward the rear at the rear end of the shaft boss (35b).
c) is integrally formed, and when the sucked air from the upstream of the fan (35) flows to the downstream side, the wind direction portion (35c) allows the air to flow in a wide range to the outside of the outer diameter portion, so that the outer diameter It is configured to allow suction of normal wind without blowback of wind on the outside of the part.

Further, the air exhausted from the fan (35) is spread to the left and right widths below the cutter (36) to a third opening (48) substantially in the middle of the suction and discharge fan (35) and the cutting cutter (36). A plurality of wind direction plates (4
9) is provided, and the rear side (38) of the 4th gutter (38)
The support shafts (49a) of the wind direction plates (49) are supported by a plurality of holders (50) fixed to a) via mounting bolts (51) so that the height and the wind direction angle can be adjusted, respectively, and the wind direction plates are adjusted. (49) and No. 3 gutter (48) above the No. 4 gutter wind direction part (38b) by the wind guided by the cutter (3
6) is configured to disperse the straw after cutting and to spread it in the width of a few cutting lines to the rear of the machine by the guide of the straw guide plate (52) behind the cutter (36).

The present embodiment is constructed as described above, and during the rocking / sorting operation of threshing grains by the rocking / sorting disc (26), the sorting wind from the Karako (32) is the first conveyor ( 33) After passing through the upper chaff sheave (29), along the top of the No. 4 gutter (38), No. 4 (4
7) Without blowing up in the direction, the suction / exhaust dust fan (3
With the suction force of 5), it is sucked along the inside of the No. 4 gutter (38) and is exhausted to the outside of the machine through the No. 3 port (48). As a result, the blowing of air from the No. 4 port (47) to the cutting cutter (36) side as in the conventional case is prevented, the accumulation of dust and the like on the No. 4 gutter (38) is eliminated, and the No. 4 port ( It is possible to greatly reduce the popping out of the grain due to the wind from 43) and the obstruction of the collection of the stab grain due to the accumulation of dust. It is facilitated by the effective suction air of, and can perform the sorting work with high accuracy and high efficiency without grain loss.

Further, when the sorting wind from the suction / exhaust fan (35) is flowing through the third port (48), the wind direction plate (4)
By the guide of 9), it is possible to make the air flow in the cutting cutter (36) substantially evenly in the width direction.
When the cut straw cut in 6) falls, the cut straw can be diffused into the cutting width, which is the full width of the cut, and discharged to the field.

7 to 8 show a fan casing (53) on the rear side of the threshing unit (4) surrounding the dust collecting and discharging fan (35).
Is divided into upper and lower parts, and the upper casing body (53a) is divided into 4 parts.
It is fixed to the lower side of the gutter (38), and the lower casing body (53b) is openably and closably attached to the upper end of the second gutter (34b) of the threshing part (4) via a hinge (54) to select wind. By switching the end of the road (55) to the closed or open state, the selection method suitable for the crop can be selected to expand the applicable range of the work.

The suction / exhaust dust fan (35) may be driven by an electric system so that it is supported below the fourth gutter (38).

[0016]

As is apparent from the above-described embodiments, the present invention is directed to the axial flow intake / exhaust dust in which the rotary shaft (39) faces the longitudinal direction of the machine body at the position below the fourth gutter (38) behind the handle cylinder (6). The fan (35) is provided, and the fan (3) is provided between the fan (35) and the straw cutting device (36) arranged behind the dust suction and discharge fan (35).
Since the wind direction plate (49) that guides the exhaust air from 5) is provided, the exhaust air of the suction and exhaust fan (35) that sucks and discharges the sorting air is effectively used to diffuse and release the cut straw. The threshing unit (4) that can smooth the sorting wind as well as the structure can be made compact and the cost can be reduced by eliminating the need for the conventional straw diffusing device.
It has a remarkable effect in that the discharge from rice can be promoted and the threshing performance can be stably improved.

[Brief description of drawings]

FIG. 1 is a cross-sectional explanatory view of a threshing unit.

FIG. 2 is an overall side view of the combine.

FIG. 3 is an overall plan view of the combine.

FIG. 4 is an explanatory plan view of a threshing unit.

FIG. 5 is a rear view of the threshing unit.

FIG. 6 is an explanatory diagram of an intake / exhaust dust fan.

FIG. 7 is a side view illustrating another modified example.

FIG. 8 is a rear view showing another modified example.

[Explanation of symbols]

 (6) Handling cylinder (35) Dust intake and exhaust fan (36) Cutting cutter (straw cutting device) (38) No. 4 gutter (39) Rotating shaft (49) Wind vane

Claims (1)

[Claims] 1. An axial-flow intake / exhaust dust fan for directing a rotary shaft in the longitudinal direction of the machine is provided at a position below the gutter on the rear side of the handling body, and between the straw cutting device disposed behind the intake / exhaust dust fan. A threshing device, characterized in that a wind direction plate for guiding the exhaust air from the fan is provided in the.