JPH10295167A - Combine threshing equipment - Google Patents

Abstract

PROBLEM TO BE SOLVED: To obtain a threshing device by which a third loss is reduced even when waste straw quantity is reduced in a cutting end at the time of machine body rotation, etc., and selecting precision is improved by providing a cutting end mode means for holding the target opening degree of a chaff sheave which is set at the time of the cutting end for a fixed time. SOLUTION: The threshing device of a combine where the opening degree of the chaff sheave 29 on a rocking selecting board is automatically adjusted in accordance with waste straw quantity is provided with the cutting end mode means for holding the target opening degree of the chaff sheave 29 which is set at the time of the cutting end for fixed time. Besides, it is favorable that an automatic change-over means for executing change-over from a cutting work mode into the cutting end mode when it is detected any one of the driving stop of a cutting part, the driving stop of a feed chain, the detection stop of a grain culm in a prescribed position or the change-over of the cutting part from vehicle speed synchronization into fixed rotation is provided and also the target opening degree of the chaff sheave 29 is held only for prescribed stand-by time based on vehicle speed synchronization when cutting work is restarted during cutting end control.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a combine threshing apparatus that automatically adjusts the opening of a chaff sheave of a swing sorting machine according to the amount of straw conveyed by a straw chain or the like.

[0002]

In such a means in which the opening of the chaff sheave is automatically adjusted in accordance with the amount of straw, when the amount of straw is reduced at the end of cutting such as when the aircraft is circulating, the chaff sheave is not used. Is closed, there is a disadvantage that a large amount of No. 3 loss occurs.

[0003]

SUMMARY OF THE INVENTION Accordingly, the present invention provides a combine threshing apparatus which automatically adjusts the opening of the chaff sheave of the swing sorter according to the amount of straw, and sets the target of the chaff sheave set at the end of cutting. By providing the end-of-cut mode means that keeps the opening degree for a certain period of time, even when the amount of straw is reduced at the end of cutting such as when the aircraft circulates, the opening degree of the chaff sheave is kept at a constant open state to reduce the third loss. This makes it possible to reduce the number of good cutting operations.

[0004] Further, any one of stop of the driving of the cutting unit, stop of the drive of the feed chain, detection of the grain culm at a predetermined position, and switching from the tuning of the cutting unit to the constant rotation is detected. An automatic switching means for switching from the cutting operation mode to the cutting end mode is provided, and when the cutting end state is reached, this is automatically detected to enable a good cutting end operation while keeping the chaff sheave at an appropriate opening degree. is there.

Further, when the harvesting operation is restarted during the cutting end control, the target opening of the chaff sheave is provided for a predetermined standby time based on the vehicle speed synchronization. The chaff sheave is kept at a constant and appropriate opening until it reaches a certain degree, and a good work with a reduced third loss is enabled.

[0006]

Embodiments of the present invention will be described below in detail with reference to the drawings. FIG. 1 is a control circuit diagram of the chaff sheave, FIG. 2 is an overall side view of the combine, and FIG.
In the figure, (1) is a track frame on which a traveling crawler (2) is mounted, (3) is a machine frame mounted on the track frame (1), (4) is a feed chain (5) which is stretched to the left and handled. A threshing unit incorporating a body (6) and a processing body (7);
(8) is a mowing section provided with a cutting blade (9) and a grain culm transport mechanism (10), (11) is a hydraulic cylinder that moves the mowing section (8) up and down through a mowing frame (12), and (13) is Straw processing unit facing the end of straw chain (14), (15)
Is a grain tank for bringing in the grains from the threshing unit (4) through a fryer (16), (17) is a discharge auger for carrying out the grains of the tank (15) outside the machine, and (18) is A driving cabin including a driving operation unit (19) and a driver's seat (20);
An engine (21) is provided below the driving cabin (18), and is configured to continuously cut and threat grain culms.

As shown in FIGS. 4 and 5, reference numeral (22) in the figures denotes a handling chamber in which an axial-flow-type handling cylinder (6) is mounted in the longitudinal direction of the fuselage. Handling room (22)
(24) is a crimp net stretched below the handling chamber (22), and (25) is swingable in the front-rear direction with the front end facing the crimp net (24) below. (26) and (27) are feed pans before and after a sorter (25) disposed in two stages above and below the crimping net (24), and (28) is a front feed pan (26). )
(29) Sorting sieve line that can be swung up and down on the rear end side of
Is a chaff sheave continuously provided behind the rear end of the rear feed pan (27), (30) is a Glen sheave disposed below the chaff sheave (29), and (31) is a front and rear feed pan (26).
(27) a dust-feeding fan which is a pre-fan for sending a sorting wind between upper and lower sides; (32) is a main fan for sending a sorting wind between the chaff sheave (29) and the Glen sheave (30) and below the Glen sheave (30); Karino, a blowing device, (33) is the first conveyor that communicates with the fryer (16) to take out the grains into the grain tank (15), (34) is the second conveyor that reduces the second product (35). Through the sieve line (2) of the sorter (25)
8) A second conveyor returning upward, (36) is a suction / discharge fan disposed above the rear end of the sorting board (25),
The grains threshed by the handling cylinder (6) and the processing cylinder (7) are sorted by an oscillating sorter (25), and only the sized grains are taken out to the grain tank (15). 14)
And sent to the straw processing unit (13) through the straw cutter (3).
After cutting according to 7), it is configured to be discharged outside the machine.

As shown in FIGS. 6 to 13, a chaff flavor (38) for adjusting the opening of the chaff sheave (29).
Each of the chaff wires (42) and the shutter wire (43) is connected to the dust sending fan (31) and the shutter lever (41) for adjusting the opening of the fan shutters (39) and (40) on the right side of the fan. The chain guide (44) of the straw chain (14) is interlocked with the chain guide (44). ) And the detection arm (47) are interlocked via the detection plate (46), and the arm shaft (4) is changed by the fluctuation of the chain guide (44).
8), the detection arm (47) swings to pull each wire (42) (43), and each lever shaft (4) is pulled.
9) The chaff and shutter levers (38) and (41) are rotated counterclockwise about (50) to increase the chaff opening of the chaff sheave (29) and the shutter (39).
Each fan (31) (32) closed by (40)
The right air inlets (51) and (52) are configured to have a large opening.

Further, the chaff flavor (38) is rotated counterclockwise around the lever shaft (49), and the lower movable plate (53) supporting the lower end of the left and right ends of the chaff sheave (29) is moved to move the chaff sheave. When making the inclination angle of each horizontal member (54) constituting (29) large (standing), the opening degree of the chaff sheave (29) is increased to increase the amount of grain leakage, and each horizontal member (54) is increased. When the inclination angle of (2) is set to be small (to lie down), the opening degree of the chaff sheave (29) is made small to reduce the amount of grain leakage.

Further, a switching lever (55) that is rotatable about the lever shaft (49) by moving an outer (42a) of the chaff wire (42) on the side of the chabber (38).
The swing arm (59) and the switching wire (60) are supported at the tip of the piston rod (58a) of the opening adjusting cylinder (58) operated by the chaff opening motor (57) while supporting the outer receiving (56). The switching lever (55) via
When the switching lever (55) is swung about the lever shaft (49) by the forward and backward driving of the cylinder (58), the outer portion (42) of the chaff wire (42) is connected.
a) is moved to adjust the opening of the chaff sheave (29).

The levers (38) and (55) and the cylinder (58) are respectively attached to base tables (62) and (63) fixed to the outer wall of the threshing side plate (61).
2) and the switching lever (55), and between the levers (38) and (5).
5) Return springs (64) and (65) are interposed between them, and an outer (60a) of the switching wire (60).
One end side of the base (62) and the outer (60a)
Mounting base (66) for fixing the other end of the base to the base base (63)
Attached to the outer receiver (67). And a bearing (69) of a bearing plate (68) fixedly mounted on the mounting base (66).
A swing arm (59) and an intermediate arm shaft (70) swingably supported, and one end of the swing arm (59) is connected to the other end of the wire (60). The other end of the arm (59) is connected to the piston rod (58).
a) and the piston rod (58a)
When moving back and forth, the wire (60) is pulled or loosened through the swing arm (59) to swing the switching lever (55). Incidentally, reference numeral (71) denotes a chaff position sensor for detecting the movement position of the chaff flavor (38).

A potentiometer type selection flow sensor (72) for detecting the flow pressure of the grain on the sheave (29) is provided above the feed start end of the chaff sheave (29) to increase or decrease the grain flow on the chaff sheave (29). The drive of the motor (57) is controlled based on the above-mentioned, and the opening of the chaff sheave (29) adjusted to the set opening is corrected.

[0013] In this case, even if an abnormality occurs in the flow sensor (72) and the chaff opening motor (57), the minimum and maximum opening of the chaff sheave (29) is regulated by the amount of waste straw, resulting in significant loss and sorting. A decrease in precision is prevented and work stability can be improved.

As shown in FIGS. 14 to 16, the flow rate sensor (72) is provided on the inlet side plate (74) of the dust outlet (73) of the processing cylinder (7) arranged right behind and behind the handling cylinder (6). ), And 2nd of the second conveyor (34) in rear view.
No. 2 return outlet (7
5) The sensor base (7) is provided near the fixed mounting plate (76) of the side plate (73) via a bolt (77).
8) is mounted so as to be adjustable in the left-right position, and a gate-shaped meter mounting plate (80) on which a potentiometer (79) is fixed is vertically adjustable via a bolt (81).
8), a front inclined detection plate (82) swingably fixed to the meter shaft (79a) of the potentiometer (79), and a wind-containing grain flow on the chaff sheave (29). The detection of the grain flow on the chaff sheave (29) by the grain pressure received by the detection plate (82). In addition, the flow rate sensor (7
2) A vertical return piece (83) having a lower part formed by a weight (83a) is integrally provided at a rear position of the front detection plate (82), and the detection plate (82) is moved from the meter shaft (79a) to the bottom. The distance (L2) from the meter shaft (79a) to the lowermost end of the return plate (83) is set smaller than the distance (L1) to the lower end, and the flow of grain acts only on the detection plate (82) to return the return plate ( 83)
To improve the detection accuracy, and to stop the return of the grain (8) when the grain flow is stopped.
The detection plate (82) is configured to return to the initial posture by its own weight in 3).

The same effect can be obtained by providing the flow rate sensor (72) on the bottom plate (7a) of the processing cylinder (7) in addition to the inlet side plate (74).

As shown in FIG. 17, the standard position of the opening of the chaff sheave (29) is switched according to the variety of rice and wheat (corrected slightly to the closed side when wheat is selected). The standard position is offset depending on the material or branch spike (wet material is corrected to the open side and branch spike is corrected to the closed side). A selection adjustment dial (85) is provided on the operation panel (19a) of the operation unit (19). I have.

As shown in FIG. 1, a cereal culm sensor (87) attached to the rear side of the cereal stalk raising case (86) of the mowing part (8) to sense the length of the culm to be mown, A cutting switch (89) for detecting the on / off state of a cutting clutch (not shown) by a work clutch lever (88) of the operating section (19), and driving of the feed chain (5) at the feed end side of the feed chain (5). The operation position of the feed chain clutch (90) for turning on and off, the cutting quick switch (91) for switching the cutting unit (8) from the vehicle speed synchronization to the constant rotation drive, and the switching lever (55) by the adjusting cylinder (58). A chaff outer sensor (92) for detecting a vehicle speed and a vehicle speed sensor (9
3), a controller (94) for input connection of the chaff position sensor (71) and the flow sensor (72), and a controller (94) for a motor drive circuit (95) of the chaff opening motor (57). ) Is connected to the output to drive and control the motor (57).

As shown in FIGS. 18 and 19, when the power is turned on, the motor origin matching mode of the chaff sheave control is performed.
7) is driven to the closed side, and the origin is set to the position driven to the fixed value open side from the drive stop position, and this origin adjustment is completed and the apparatus enters the standby mode. And during this standby mode,
The cutting switch (89) is on (the cutting clutch is on), the feed chain (5) is on (drive), and the grain culm sensor (8)
7) is ON (detects the grain culm), the operation mode is set, and the opening control of the chaff sheave (29) for driving the motor (57) to the chaff angle (chaff sheave angle) corresponding to the sorting adjustment dial (85) is performed. At the same time, the cutting switch (89) is changed from ON to OFF (cutting clutch is disengaged) during the opening degree control, or the feed chain (5) is turned OFF (driving stopped), or the grain culm sensor (87)
When one of the following conditions is established, when is changed from on to off (no detection of grain culm) or when the cutting quick switch (91) is changed from off to on (constant rotation from vehicle speed synchronization), the cutting end mode is set. Then, the motor (57) is driven further to the open side by a fixed angle (θ) than the chaff angle corresponding to the dial (85), the state is maintained for a fixed time, then the end of the mowing is ended and the operation returns to the standby mode. It is.

In the stand-by mode, the cutting end mode is set when the cutting quick switch (91) is turned on from off (constant rotation from vehicle speed synchronization) and the cutting switch (89) is turned on (cutting clutch is on). Cutting switch (89)
Is turned off and the feed chain (5) is turned on, the manual operation mode is set, and the motor (57) is driven further to the open side by a certain angle (α) than the chaff angle corresponding to the dial (85), and this manual operation mode is performed. When the mowing switch (89) is turned on or the feed chain (5) is turned off during the mowing operation, the mode returns to the standby mode. When an abnormal input signal is output from the motor driving circuit (95) during the control to the controller (94), the driving of the motor (57) is stopped.

FIG. 20 is a flow chart of the work mode, in which the standard position of the opening of the chaff sheave (29) is switched (slightly closed side in the case of wheat) by the rice / wheat selector switch (84), and the sorting and adjustment are performed. The standard position is offset by the dial (85) (wet material is closed on the open side branch), and a correction amount calculated from a map based on the sensor value of the flow rate sensor (72) is further added thereto.
A control target value is calculated, and a fuzzy inference is made from the deviation between the control target value and the chaff outer sensor (92) (target value-sensor value) and the rate of change of the sensor (92) (previous sensor value-current sensor value). The drive output value of the motor (57) is calculated, the drive control of the motor (57) is performed in accordance with the output value, and the chaff sheave (29) is held at an appropriate opening. During the operation, the appropriate value of the amount of straw is added to the standard opening, and the opening control of the chaff sheave (29) is performed based on the increase or decrease in the amount of straw.

FIG. 21 is a flowchart of the manual operation mode. In the manual operation operation, a target value is set to a predetermined angle (α degree) open side from the chaff angle corresponding to the dial (85) and the motor (57) is set. ) Is performed, and
When the grain flow rate on the chaff sheave (29) changes to the increasing side, a correction for opening the chaff angle is added according to the change amount (increase amount) as in the work mode, and the motor (5)
The drive control of 7) is performed to reduce the third loss.

FIG. 22 is a flow chart of the cutting end control in the cutting end mode, and FIGS. 23 and 24 are time charts. In the normal cutting end control as shown in FIG. Immediately thereafter (immediately after the end of the work mode), the target value is set further on the open side by a certain angle (θ degree) than the set angle of the selection adjustment dial (85) to reduce the third loss, and on the swinging sorter (25). The opening is maintained for a certain period of time (T seconds) until the number of grains decreases. As shown in FIG. 24, during such control, the culm sensor (87) is turned off to start the end-of-cut mode, and when the culm sensor (87) is turned on during the end-of-cut control, the operation is resumed. The cutting end mode is started when the chain (5) is turned off (driving is stopped), and the culm sensor (87) is turned on when the feed chain (5) is driven during the cutting end control and the operation is resumed. When the transfer time from the grain culm sensor (87) to the feed chain (5) is Hm, the standby time is calculated based on the vehicle speed, and the standby time required for transfer is calculated from the vehicle speed. Feed chain (5)
The passing time from the inheritance to the straw chain (14) is added, and when the waiting time until the cereal stem reaches the straw chain (14) from the grain stalk sensor elapses, that is, the chaff angle becomes equal to the straw amount. The processing in the end-of-mowing mode is terminated when the blade is opened to the appropriate angle. Note that the constant holding time during standby (T
When (seconds) have elapsed, the processing ends at that point.

As described above, in the end-of-cutting mode, the opening degree of the chaff is controlled so that the same state is maintained when there is straw, so that the grain processing amount of the chaff sheave (29) decreases, and the processing proceeds to the third opening. In this case, even if the movement of the water is promoted, the state is such that the leakage of the grain is promoted to reduce the grain loss (third loss). Also, at the time of the end of cutting, the sorting wind is weakened, but by keeping the opening of the chaff sheave (29) on the open side, the sorting effect by the sorting wind can be improved and the sorting accuracy can be improved. At the same time, the third loss can be reduced.

[0024]

As is apparent from the above embodiments, the present invention relates to a combine threshing apparatus in which the opening of the chaff sheave (29) of the swinging sorter (25) is automatically adjusted according to the amount of straw. It is equipped with a cut-off mode means for holding the target opening of the chaff sheave (29) set at the end of the cut for a fixed time (T). Also, chaff sieve (2
9) It is possible to maintain the opening degree at a constant opening state, and to enable a good cutting end operation in which the third loss is reduced.

Further, the driving of the cutting unit (8) is stopped, the driving of the feed chain (5) is stopped, the detection of the grain culm at a predetermined position is stopped, or the switching of the cutting unit (8) from the vehicle speed synchronization to the constant rotation is performed. The automatic switching means for switching the cutting mode from the cutting operation mode to the cutting end mode when any one of the above is detected is provided. When the cutting end state is reached, this is automatically detected, and the chaff sheave (29) is properly adjusted. It is possible to make it possible to perform a good end-of-mowing operation while maintaining the opening.

Further, when the mowing operation is restarted during the mowing end control, the target opening of the chaff sheave (29) is held for a predetermined standby time based on the vehicle speed synchronization. The chaff sheave (29) can be kept at a constant appropriate opening until the opening becomes a suitable opening, and a good work with a reduced third loss can be performed.

[Brief description of the drawings]

FIG. 1 is a control circuit diagram.

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 sectional view of a threshing unit.

FIG. 5 is an explanatory side view of the swing sorter.

FIG. 6 is an explanatory diagram of a relationship between a chaff sheave portion and a shutter portion and a straw amount.

FIG. 7 is an explanatory side view of a chaff sheave and a shutter unit.

FIG. 8 is an explanatory diagram of a straw chain portion.

FIG. 9 is an explanatory side view of a chaff and a switching lever unit.

FIG. 10 is an explanatory diagram of an operation of a chaff and a switching lever unit.

FIG. 11 is an explanatory front view of a chaff opening adjustment section.

FIG. 12 is an explanatory diagram of the operation of the chaff opening degree adjustment unit.

FIG. 13 is an explanatory side view of a chaff opening adjustment section.

FIG. 14 is an explanatory cross-sectional view of the back of the threshing unit.

FIG. 15 is an explanatory diagram of a flow sensor.

FIG. 16 is an explanatory diagram of a flow sensor.

FIG. 17 is an explanatory diagram of a switch unit.

FIG. 18 is a flowchart.

FIG. 19 is an explanatory diagram related to various modes.

FIG. 20 is a flowchart.

FIG. 21 is a flowchart.

FIG. 22 is a flowchart.

FIG. 23 is a time chart.

FIG. 24 is a time chart.

[Explanation of symbols]

 (5) Feed chain (8) Cutting section (25) Swing sorter (29) Chaff sheave

 ──────────────────────────────────────────────────の Continuing on the front page (72) Inventor Teruki Tonami 1-32 Chayacho, Kita-ku, Osaka Yanmar Agricultural Machinery Co., Ltd.

Claims (3)

[Claims] In a combine threshing apparatus wherein the opening of the chaff sheave of the swinging sorter is automatically adjusted according to the amount of straw, the target end of the chaff sheave set at the end of cutting is maintained for a certain period of time. A combine threshing apparatus comprising a mode means. 2. Detecting any one of stop of the driving of the cutting unit, stop of the driving of the feed chain, stop of detection of the grain culm at a predetermined position, or switching of the cutting unit from vehicle speed tuning to constant rotation. 2. The combine threshing apparatus according to claim 1, further comprising an automatic switching means for switching the cutting operation mode from the cutting operation mode. 3. The combine as claimed in claim 1, wherein the target opening of the chaff sheave is maintained for a predetermined standby time based on the vehicle speed synchronization when the harvesting operation is restarted during the cutting end control. Threshing equipment.