JP2003325026A - Combine - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a combine capable of installing switches 106, 107 for performing e.g. a threshing depth or reaping height adjustment on a lever 97, and performing a switching operation of a reaping part 8 to a constant rotation as necessary by a foot step operation of a pedal 103 appropriately. <P>SOLUTION: This combine switching the reaping part 8 between a synchronization with a vehicle speed and drive at a constant rotation is provided with the pedal 103 for driving the reaping part 8 to rotate at a constant speed at a driving stand 102. <P>COPYRIGHT: (C)2004,JPO

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a combine for continuously cutting and threshing culms.

[0002]

2. Description of the Related Art Conventionally, there is a technique for switching a cutting unit to vehicle speed synchronization or constant rotation drive. (For example, see Patent Document 1)

[0003]

[Patent Document 1] Japanese Patent Laid-Open No. 4-341116

[0004]

In the above-mentioned prior art, since a switch for driving the mowing unit to rotate at a constant speed is provided on the lever for traveling speed change and operated by hand, for example, the handling depth or cutting height is adjusted. It is not possible to easily secure a space for installing the switch of the above-mentioned in the lever in the lever grip part, and when the constant rotation drive of the mowing section is set to a speed lower than the vehicle speed synchronization, the switch of the constant rotation drive is erroneously operated, There is a problem that the mowing unit is driven at a speed that does not correspond to the vehicle speed, and a problem occurs such that the transport path of the mowing unit is clogged with grain culms.

[0005]

According to the present invention, however, in a combine for switching the mowing section to vehicle speed synchronization or constant rotation driving, a pedal for driving the mowing section to constant rotation is provided in the driver's cab. , For example, compared to the conventional structure in which a switch for driving the mowing unit to rotate at a constant speed is provided on the lever for traveling speed change and operated by hand, other switches for adjusting the working depth or cutting height can be installed on the lever. The operation of switching the mowing unit to a constant rotation can be appropriately performed only when necessary by depressing the pedal.

According to the second aspect of the present invention, the pedal is provided on the upper surface of the step of the driver's cab on which the operator puts his / her feet at a position where the operator is not restricted to get on / off the driver's seat. The operator can step on the pedal and switch the mowing unit to the constant rotation drive only when he / she is aware of the space required for the work while the worker is standing. It can be easily improved.

Further, a pedal for driving the reaping unit to rotate at a constant speed is provided in a step on the driver's cab to the right of the steering wheel in front of the driver's seat to the right. An operator sitting in the driver's seat can operate the limbs by operating the limbs in the same way as a typical automobile, by gripping the steering wheel, holding the speed change lever with the left hand, and stepping on the pedal with the right foot. It is possible to use the left foot as a vehicle, and for example, a worker who has moved to the field by using a light truck or the like can operate the harvesting work with little discomfort.

[0008]

BEST MODE FOR CARRYING OUT THE INVENTION Embodiments of the present invention will be described in detail below 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. 3 is a plan view of the combine.
In the figure, (1) is a track frame on which the traveling crawler (2) is mounted, (3) is a machine frame installed on the track frame (1), and (4) is a feed chain (5) stretched on the left side for handling. A threshing part incorporating a barrel (6) and a treating barrel (7),
(8) is a mowing section provided with a cutting blade (9) and a grain culm transport mechanism (10), (11) is a hydraulic cylinder for moving the mowing section (8) up and down via a mowing frame (12), and (13) is Straw processing unit that faces the end of the straw chain (14), (15)
Is a grain tank for loading the grain from the threshing unit (4) through the lifting barrel (16), (17) is a discharge auger for transporting the grain of the tank (15) out of the machine, and (18) is A driving cabin including a driving operation unit (19) and a driver's seat (20),
Reference numeral (21) is an engine provided below the operating cabin (18), and is configured to continuously mow grain culms and thresh.

Further, as shown in FIGS. 4 to 5, (22) 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 (23) is the above-mentioned. Handling room (22)
A handle for inserting a grain culm into the container, (24) a crimp net stretched under the handler chamber (22), and (25) a front end facing below the crimp net (24) and swingable in the front-back direction. The swinging sorters supported by the above, (26) and (27) are front and rear feed pans of the sorter (25) arranged in two stages below and above the crimp net (24), and (28) is the front feed pan (26). )
A screening screen line (29) provided on the rear end side to be swingable up and down.
Is a chaff sheave continuously provided behind the rear end of the rear feed pan (27), (30) is a gren sheave arranged below the chaff sheave (29), and (31) is a front and rear feed pan (26).
The dust-blowing fan that is a pre-fan that sends the sorting air between the upper and lower parts of (27), and (32) is the main one that sends the sorting air between the chaff sheave (29) and the Glensive (30) and below the Glensieves (30). Kara Minoh, which is a blower, (33) is the first conveyor that communicates with the fried cylinder (16) to take out the grains to the grain tank (15), (34) is the second conveyor and the second reduction conveyor (35). Through the sieving line (2
8) No. 2 conveyor for returning upward, (36) is an intake and exhaust fan disposed above the rear end of the sorting board (25),
Grains that have been threshed by the handling cylinder (6) and the processing cylinder (7) are sorted by a rocking sorting board (25), and only the sized grains are taken out to the grain tank (15), and the straw is drained in the straw chain ( 14)
It is sent to the straw processing unit (13) through the straw cutter (3).
After cutting according to 7), it is configured to be discharged to the outside of the machine.

As shown in FIGS. 6 to 13, a chaff lever (38) for adjusting the opening degree of the chaff sheave (29).
The chaff wire (42) and the shutter wire (43) are attached to the dust-sending fan (31) and the shutter lever (41) for adjusting the opening of the fan shutters (39) (40) on the right side of the dust blow fan (31) and the karako (32). The chain guide (44) of the straw chain (14) is interlockingly connected through the chain guide (44) that changes the distance between the chain guide (44) and the chain (14) depending on the amount of straw to be detected. ) And the detection plate (46), the detection arm (47) is interlockingly connected, and the arm shaft (4
When the detection arm (47) swings around 8) and each wire (42) (43) is pulled, each lever shaft (4)
9) Rotate the chaff and the shutter levers (38) and (41) counterclockwise about the (50) to increase the chaff opening of the chaff sheave (29), and the shutter (39).
Each fan (31) (32) blocked by (40)
The openings of the air intakes (51) (52) on the right side are configured to be large.

Further, the chaff lever (38) is rotated counterclockwise about the lever shaft (49) to move the lower movable plate (53) supporting the lower ends of the left and right ends of the chaff sheave (29) to move the chaff sheave. When the inclination angle of each of the horizontal shafts (54) constituting (29) is made large (standing), the opening amount of the chaff sheave (29) is made large to increase the leakage amount of the grains, and the horizontal shafts (54) are made. When the inclination angle of) is set to be small (to lie down), the opening of the chaff sheave (29) is set to be small to reduce the leakage amount of the grain.

Further, the outer lever (42a) of the chaff wire (42) on the side of the chaff lever (38) is rotatable around the lever shaft (49) as a switching lever (55).
Of the opening adjustment cylinder (58) operated by the chaff opening motor (57), the swing arm (59) and the switching wire (60) are supported at the tip of the piston rod (58a). Through the switching lever (55)
When the switching lever (55) is swung around the lever shaft (49) by the forward and backward driving of the cylinder (58), the outer (42) of the chaff wire (42) is linked.
A) is moved to adjust the opening degree of the chaff sheave (29).

The levers (38) (55) and the cylinder (58) are attached to base stands (62) and (63) fixed to the outer wall of the threshing side plate (61), respectively, and the base stand (6) is attached.
2) and the switching lever (55) and between the levers (38) and (5)
5) The return springs (64) and (65) are respectively interposed between them, and the outer wire (60a) of the switching wire (60) is provided.
One end side of the base on the base (62), also outer (60a)
(66) for fixing the other end of the to the base (63)
It is attached to the outer receiver (67). The bearing (69) of the bearing plate (68) fixedly mounted on the mount (66)
An arm shaft (70) intermediate the swing arm (59) is swingably supported, one end side of the swing arm (59) is connected to the other end side of the wire (60), and swing is performed. On the other end side of the arm (59), the piston rod (58
The piston rod (58a) is formed by connecting the tips of a).
When the wire is moved back and forth, the wire (60) is pulled or loosened via the swing arm (59) to swing the switching lever (55). Reference numeral (71) is a chaff position sensor for detecting the moving position of the chaff lever (38).

A potentiometer-type sorting flow rate sensor (72) for detecting the grain layer thickness (a) on the sheave (29) is provided above the feeding start end of the chaff sheave (29) to measure the amount of grain on the chaff sheave (29). The motor (57) is drive-controlled on the basis of the increase or decrease of (1) to correct the opening of the chaff sheave (29) adjusted to the set opening.

In this case, even if an abnormality occurs in the flow rate sensor (72) and the chaff opening motor (57), the minimum and maximum openings of the chaff sheave (29) are regulated by the amount of straw, resulting in significant loss or selection. The accuracy is prevented from being lowered and the 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 transfer port (73) of the processing cylinder (7) which is arranged rearward on the right side of the handling cylinder (6). 2) of the second conveyor (34) in rear view.
No. 2 return outlet (7) for returning the processed product to the sorting board (25)
5) It is arranged in the vicinity, and the sensor mount (7) is mounted on the fixed mounting plate (76) of the side plate (73) through the bolt (77).
8) is attached so that the horizontal position can be adjusted, and a portal-shaped meter mounting plate (80) for fixing the potentiometer (79) can be vertically adjusted through bolts (81) to the sensor base (7).
8) attached to the meter shaft (79a) of the potentiometer (79) so as to be swingably fixed, and the lower end of the side-faced V-shaped detection plate (82) is brought into contact with the layer thickness (a). The potentiometer (79) is used to detect the large and small changes in (a) through the detection plate (82).

The flow rate sensor (72) has the same effect even if it is provided on the bottom plate portion (83) of the processing cylinder (7) in addition to the inlet side plate (74).

Further, as shown in FIG. 17, the standard position of the opening of the chaff sheave (29) is switched depending on the rice and wheat varieties (corrected to the closed side slightly when wheat is selected), and the rice and wheat selector switch (84) is used. The standard position is offset (wet material is corrected to open side and branch disease to closed side) depending on the amount of material or branch pecking, and a selection adjusting dial (85) is provided on the operation panel (19a) of the operation part (19). There is.

Then, as shown in FIG. 1, a grain culm sensor (8) which is a switching means attached to the rear side of the grain culm raising case (86) of the reaper (8) to detect the length of the grain culm to be mowed
7) and the work clutch lever (8) of the operation control section (19).
8) A cutting switch (89), which is a switching means for detecting whether the cutting clutch (not shown) is turned on or off, and a raising section (8) are raised to a certain height by an automatic lift operation provided in a driving operation section (19). The automatic clutch switch (9 which is a switching means for disengaging the reaping clutch when the switch is turned on)
0), a pouring switch (91) which is a switching means for switching the reaper (8) to a constant rotation drive by vehicle speed synchronization, and a chaff outer sensor for detecting the operation position of the switching lever (55) by the adjusting cylinder (58). (92), a vehicle speed sensor (93) provided in a mission case of the machine to detect a vehicle speed, the chaff position sensor (71), and a flow rate sensor (72) are connected to the controller (94).
In addition, the controller (94) is connected to the motor drive circuit (95) of the chaff opening motor (57) so as to control the drive of the motor (57).

By the way, as shown in FIG. 22 to FIG. 24, a steering handle (96) is provided in the driving operation section (19), and a main and sub-shift lever (97) for shifting operation of traveling speed.
(98), a work clutch lever (88) for opening and closing the reaping and threshing clutch, a general display (99) for displaying work status such as vehicle speed and initial setting, and adjusting vehicle height and left / right tilt Cross type manual switch to operate (100)
And the like are provided on the left side column (101), and on the right side of the driver's cab (102), there is provided a pouring switch pedal (103) of the pouring switch (91) which keeps a constant rotation at a low speed of the reaper.

As is apparent from the above, in the combine for switching the cutting unit (8) to vehicle speed synchronization or constant rotation driving, the pedal (103) for driving the cutting unit (8) to constant rotation.
Is provided on the driver's cab (102) and, for example, a switch (91) for driving the mowing section (8) to rotate at a constant speed is provided on a lever for traveling speed change, as compared with a conventional structure in which the lever is manually operated. Other switches (106) (10) for adjusting
7) is installed on the lever (97), and the pedal (10
Mowing section (8) only when necessary by stepping operation in 3)
Is properly operated and the pedal (103) is placed on the upper surface of the step of the driver's cab (102) on which the operator puts his / her foot at a position where the operator sitting on the driver's seat (20) is not restricted from getting on and off. Is provided to secure the space necessary for the worker to get on and off and the work performed by the worker in a standing posture. Only when the worker is aware, the pedal (103) is stepped on and the reaper (8) is driven to rotate at a constant speed. You can perform the operation to switch to
It is possible to prevent erroneous operations and improve operability.

Further, in front of the driver's seat 20 to the right of the steering wheel, at the step of the cab 102 on the right side of the steering wheel 96, the cutting unit 8
Is provided with a pedal 103 for driving the vehicle in a constant rotation, and a steering wheel 96 is grasped by the right hand of an operator sitting in the driver's seat 20, a speed change lever 97 is grasped by the left hand, and the pedal 103 is stepped by the right foot. It is possible for an operator sitting on 20 to perform driving operation by moving his / her limbs like a general automobile, and to use his / her left foot for operating a clutch pedal, for example. Have the person operate the harvesting work with little discomfort.

Further, the knob (9) of the main transmission lever (97) is
7a) A handle depth adjusting switch (104) for adjusting the handle depth and a reaper lift switch (105) for vertically adjusting the reaper (8) are provided on the front side and the driver seat (20) of the knob (98). On the right side, which is the side, an auto lift switch (106) that automatically turns off the mowing clutch when raising the mowing section (8) to a certain height, and a mowing clutch when lowering the mowing section (8) to a certain height. And an automatic set switch (107) for automatically turning on and off the switch (10) while holding the main speed change lever (97).
4) (105), (106) and (107) operations are made possible.

As shown in the flow chart of FIG. 18, the reaping switch (89) is on, the auto clutch switch (90) is off, and the grain culm sensor (87) is on.
When the pouring switch (91) is on, the opening control of the chaff sheave (29) that moves the motor (57) to the target value is performed in the automatic mode, and at least one of the above-mentioned cutting switches is the off-auto clutch switch ( 9
0) is ON, the grain culm sensor (87) is OFF, and the pouring switch (91) is OFF, the opening control of the chaff sheave (29) is performed in the cutting end processing mode. Further, when an abnormal input signal is output from the motor drive circuit (95) during control to the controller (94), the drive of the motor (57) is stopped.

FIG. 19 shows a flow chart of the automatic mode, in which the rice wheat selector switch (84) switches the standard position of the opening of the chaff sheave (29) (slightly closed side in the case of wheat), and the selection adjustment. The standard position is offset by the dial (85) (wet material is on the open side branch vein is on the closed side), and the correction amount calculated from the map based on the sensor value of the flow rate sensor (72) is added to this,
A control target value is calculated, and a deviation (target value-sensor value) between the control target value and the chaff outer sensor (92) and a change rate (previous sensor value-current sensor value) of the sensor (92) are obtained by fuzzy inference. The drive output value of the motor (57) is calculated, the drive control of the motor (57) is performed according to this output value, and the chaff sheave (29) is held at an appropriate opening. Then, during the operation, the proper value of the amount of straw is added to the standard opening, and the opening of the chaff sheave (29) is controlled based on the increase / decrease in the amount of straw.

FIG. 20 is a flow chart of the cutting end processing mode, and FIG. 21 is a diagram showing the opening degree setting diagram. The off / auto clutch switch (9) of the cutting switch (89) is shown.
0) ON, the grain culm sensor (87) OFF, and the pouring switch (91) OFF, the control target value of the motor (57) is calculated from the chaff position sensor (71). Using the detection value of the sensor (71) as the target value before the cutting end processing mode, the target value of the cutting end processing mode is calculated based on the target value by adding a proportional constant or the cutting end is turned off when the grain culm sensor (87) is turned off. When the control is started, the control waiting time (DELAY1) is calculated based on the vehicle speed, and when the control is started next and the target value is reached, the holding time (DELAY2: constant time) for holding this target value is calculated. The target value is held for the time (DELAY2), and after this holding, a return time (DECAY) for slowly returning to the target value before the end of cutting is slowly calculated over a predetermined time, and a predetermined time (DECAY) is calculated.
Y) is used to restore the original target value.

In this way, in the cutting end treatment mode, by increasing the target value of the opening than in the automatic mode, the grain processing amount of the chaff sheave (29) is decreased, and the movement to the third mouth is prevented. Even if it is promoted, the grain loss is reduced by promoting the leakage of the grain.

[0028]

As is apparent from the above embodiments, the present invention operates the pedal (103) that drives the cutting unit (8) to rotate at a constant speed in a combine that switches the cutting unit (8) to vehicle speed synchronization or constant rotation driving. Compared with a conventional structure in which a switch (91) for driving the mowing section (8) at a constant rotation is provided on a lever for traveling speed change and is operated manually by hand, for example, the depth of cutting or the cutting height is increased. The other switches (106) (107) for adjusting are connected to the lever (9).
It can be installed in 7), and the operation of switching the mowing unit (8) to a constant rotation can be properly performed only when necessary by stepping on the pedal (103).

Further, the pedal (103) is placed on the upper surface of the step of the driver's cab (102) on which the operator puts his / her foot at a position where the operator who sits on the driver's seat (20) is not restricted from getting on / off the vehicle. By providing the space required for the worker to get on and off and the work done by the worker in a standing posture, the pedal (103) is stepped on and the reaper (8) is rotated at a constant speed only when the worker is aware of it. The operation for switching to the drive can be performed, and the erroneous operation can be prevented and the operability can be easily improved.

Further, as described in claim 3, the pedal 103 for driving the reaping unit 8 to rotate at a constant speed is provided at the step of the cab 102 on the right side of the steering handle 96 in front of the driver's seat 20 to the right. The operator sitting on the seat 20 holds the steering handle 96 with his right hand, holds the speed change lever 97 with his left hand, and depresses the pedal 103 with his right foot. Can be operated by moving with, and the left foot can be used, for example, for operating the clutch pedal, and for example, a worker who has moved to the field with a light truck or the like can perform the harvesting operation with little discomfort. Is something that can be done.

[Brief description of 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 a sectional explanatory view of a threshing unit.

FIG. 5 is a side view for explaining the swing sorting board.

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

FIG. 7 is a side view illustrating a chaff sheave and a shutter portion.

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

FIG. 9 is a side view illustrating a chaff and a switching lever portion.

FIG. 10 is an operation explanatory view of a chaff and a switching lever portion.

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

FIG. 12 is a diagram for explaining the operation of the chaff opening adjustment section.

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

FIG. 14 is an explanatory cross-sectional view of the rear side 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 a flowchart.

FIG. 20 is a flowchart.

FIG. 21 is a control diagram.

FIG. 22 is an explanatory plan view of a driving operation unit.

FIG. 23 is a front explanatory view of a main shift lever.

FIG. 24 is a side view illustrating a main shift lever.

[Explanation of symbols]

(8) Mowing section (20) Driver's seat (102) Driver's cab (103) Pedal

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Claims (3)

[Claims] 1. A combine for switching the mowing section to vehicle speed synchronization or constant rotation driving, wherein a pedal for driving the mowing section to constant rotation is provided in a driver's cab. 2. The combine according to claim 1, wherein a pedal is provided on the upper surface of the step of the driver's cab on which the operator puts his / her foot at a position where the entry / exit of the operator sitting on the driver's seat is not restricted. 3. The combine harvester according to claim 1, further comprising a pedal for driving the reaping unit to rotate at a constant speed in a step on the driver's cab on the right side of the steering wheel in front of the driver's seat.