JP2003052230A - Grain culm-conveying apparatus of combine harvester - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a grain-culms-conveying apparatus of a combine harvester with which hand-threshing operation can be carried out by operating only a threshing part in a state in which traveling of the combine harvester is stopped. SOLUTION: When traveling of the combine harvester is stopped, a controller changes a state in which both of a reaping clutch 79 and an implement clutch 67 are kept in OFF-state to a state in which only the implement clutch 67 is turned ON. When only the implement clutch 67 is turned ON, a variable speed transmission for driving a pre-treating part is controlled so as to drive a feed chain. As a result, manual threshing operation can be carried out by driving the feed chain of a threshing part in a state in which traveling of the combine harvester is stopped.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a combine grain culm transporting device for transporting grain stalks cut by a pretreatment section toward a threshing section.

[0002]

2. Description of the Related Art In combine harvesters, since grain cutting and threshing are carried out at the same time, a grain cutting unit and a feeding unit are provided in the pretreatment unit, and grain dipped by the cutting unit is fed to the feeding unit (saw depth feeding). Device) to feed the feed chain of the threshing section in sequence. The transport section is provided with a saw depth main sensor that detects a cut grain culm, a stock source sensor and a tip sensor that detect the tip of the cut grain culm, and a detection output of the saw depth main sensor. Based on this, the stock origin sensor and the tip sensor are operated to detect the tip of the cut grain culm, and the passing position of the tip of the grain culm with respect to the saw barrel is controlled to perform depth control.

[0003]

In such a combine, since the pretreatment section and the threshing section are controlled so as to operate at a speed proportional to the rotation speed of the transmission,
When the combine was stopped running, the pretreatment section and the threshing section were also stopped. For this reason, it was not possible to perform the hand-growing work in a state where the traveling of the combine was stopped.

In view of the above circumstances, it is an object of the present invention to provide a combine grain culm conveying device in which only the threshing section is operated and hand-growing work can be performed while traveling of the combine is stopped. And

[0005]

In order to achieve the above object, the first aspect of the present invention provides a power source (13) and an output of the power source (13) transmitted to a crawler traveling device (11). And a drive chain continuously variable transmission (60) for driving the combine (10), and the feed chain (46) of the preprocessing section (16) and the threshing section (45) with the output of the power source (13).
Is arranged between the power source (13) and the pretreatment drive continuously variable transmission (72) by transmitting the power to the power source (13). Between the power source (13) and the pretreatment drive continuously variable transmission (72),
Work machine clutch (6 that turns power transmission on and off)
7), and between the pretreatment drive continuously variable transmission (72) and the pretreatment section (16), and between the pretreatment drive continuously variable transmission (72) and the pretreatment section (16). Of power transmission
A harvesting clutch (79) for performing N and OFF is provided, and the traveling drive continuously variable transmission (60) and the pretreatment driving continuously variable transmission (72) are interlocked with each other to adjust the traveling speed of the combine (10). In a combine grain culm transporting device for interlockingly transporting grain stalks, the harvesting clutch (79) is OFF and the working machine clutch (67) is O.
A controller (85) for controlling the pretreatment drive continuously variable transmission (72) to drive the feed chain (46) in an N state is provided. It is located in the grain culm carrier.

A second aspect of the present invention provides a power source (1
3) and an output of the power source (13) to the crawler traveling device (11) to drive the combine (10) to travel continuously variable transmission (60), and the power source (13).
And a pretreatment drive continuously variable transmission (72) for transmitting the output of the above to the feed chain (46) of the pretreatment section (16) and the threshing section (45) for cutting and carrying the grain culm, and the pretreatment. A saw depth main sensor (41) arranged in the section (16) for detecting the presence or absence of a mowed culm, and the power source (13).
Between the power source (13) and the pretreatment drive continuously variable transmission (72) disposed between the power transmission (13) and the pretreatment drive continuously variable transmission (72). The machine clutch (67) is disposed between the pretreatment drive continuously variable transmission (72) and the pretreatment unit (16), and is disposed between the pretreatment drive continuously variable transmission (72) and the pretreatment unit (16). ) Of the power transmission between
A harvesting clutch (79) for performing N and OFF is provided, and the traveling drive continuously variable transmission (60) and the pretreatment driving continuously variable transmission (72) are interlocked with each other to adjust the traveling speed of the combine (10). In a grain culm transporting device for a combine, which is configured to carry the grain culm in an interlocking manner, the combine (1
0) When the traveling is stopped, the saw depth main sensor (4
1) and the mowing clutch (79) are OFF, and the work machine clutch (67) is ON, the pretreatment drive continuously variable transmission (72) is controlled to drive the feed chain (46). A combine grain culm transporting device provided with a control device (85).

Further, according to a third aspect of the present invention, the control device (85) is configured such that the saw depth main sensor (4) is provided even when the combine (10) travels up to a preset distance.
The combine according to claim 2, wherein when 1) is not turned on, the pretreatment drive continuously variable transmission (72) is controlled to drive the feed chain (46). It is located in the grain culm carrier.

The numbers in parentheses are for convenience of showing the corresponding elements in the drawings, and the present description is not limited to the description in the drawings.

[0009]

BEST MODE FOR CARRYING OUT THE INVENTION Embodiments of the present invention will be described below with reference to the drawings. 1 is a cross-sectional side view of a combine implementing the present invention, FIG. 2 is a drive system diagram of the combine shown in FIG. 1, FIG. 3 is a control system diagram of the combine in FIG.
FIG. 4 is a flowchart showing the process of grain culm transport control.

In FIG. 1, a combine 10 has a body 12 supported by a pair of left and right crawler traveling devices 11, 11. Front part of this fuselage 12 (left side of Fig. 1)
An engine 13 is mounted on either the left or right side of the. A driver's seat 15 is arranged above the engine 13.

The front of the machine body 12 (left side in FIG. 1)
A pre-processing unit 16 for cutting grain culms is supported by the vertically movable unit. Further, a threshing unit 45 for threshing the cut grain culms and selecting the threshed grains is arranged on the other side of the front portion of the machine body 12 on the other side.

And, the crawler traveling devices 11, 1
1, the pretreatment unit 16 and the threshing unit 45, the engine 13
The combine 10 is driven, and the grain culm is mowed and threshing is performed.

The pretreatment section 16 directs the raising device 26 for raising the laid grain culm, the scraping device 31 for scraping the cut grain culm, and the cut grain culm to the threshing unit 45. A transporting device 36 for transporting and adjusting the position of the grain culm is provided, and its operation base end side is rotatably supported by a transmission shaft case 17 arranged in front of the machine body 12.

A transmission case 19 extending from the transmission shaft case 17 to the machine body 12 obliquely downward and forward of the machine body 12 is transmitted by expansion and contraction of a hydraulic cylinder 20 arranged at an intermediate position in the longitudinal direction. It swings around the shaft case 17. The transmission shaft case 17 is provided with a lift potentiometer 21 that detects the amount of rotation of the transmission case 19.

Below the transmission case 19, a transmission shaft cylinder extending in the left-right direction of the machine body 12 (front-back direction in the plane of FIG. 1) and orthogonal to the transmission case 19 in a substantially T-shape. 22 are integrally connected. This transmission shaft cylinder 22
A plurality of dividers 25 are integrally connected to the vehicle body 12 via a pretreatment frame 23 extending toward the front of the machine body 12 so as to weed the uncut grain culms, raise them, and guide them to the passage.

Further, below the dividers 25 at the left and right ends, there are directional sensors (not shown) which enable the combine 10 to run automatically. Behind the divider 25, the raising device 26 that raises the culms that have been weeded is provided in an inclined shape that rises from the front of the pretreatment unit 16 toward the rear.

The raising device 26 includes a chain 27 with a claw.
And a plurality of pawls are attached to the chain 27 with pawls at predetermined intervals, and these pawls are raised to rotate upward in the case 29 to scoop up the grain culm. The claw chain 27 is driven by a drive system described later.

A cutting blade 30 is provided behind the raising device 26 and at the lower front portion of the transmission shaft cylinder 22 so as to be close to the ground and cut the root of the grain stem. The grain culm cut by the cutting blade 30 is scraped by the scraping device 31 and transferred to the rear.

The scraping device 31 includes a conveyor belt 32.
And the stock carrier transport star wheel 33, the stock carrier chain 35, etc., and the grain culms cut by the cutting blade 30 are scraped by the carrier belt 32 and the stock carrier star wheel 33 and moved to the respective paths. It is then clamped by the stock carrier transport chain 35 and taken over by the saw depth transport device 36 arranged behind the scraping device 31.

The saw depth conveying device 36 has a rear portion rotatably supported around the transmission shaft case 17 so that the saw depth can be adjusted, and conveys the tip side of the grain stem. It is provided with a tip transport chain 37 and a stock carrier chain 39 for carrying the stock side. The tip transport chain 37 and the stock carrier transport chain 39 are vertically movable integrally with the rear part as a fulcrum (in the direction of the arrow in the figure), and the starting end side thereof is the stock source of the scraping device 31. It extends above the terminal end of the transport chain 35 in the transport direction.

U attached to the saw depth conveying device 36
The pipe section 40 is provided with a saw depth main sensor 41 as a first detection means for detecting the presence or absence of grain culms during transportation. The saw depth main sensor 41 uses, for example, an on / off switch to detect the presence or absence of a grain culm during transportation. In addition, the U pipe portion 40 has a second
Stock sensor 42 and tip sensor 43 as detection means for
It is equipped with a stock source and tip sensor. This stock origin / tip sensor detects the position of the tip of the grain culvert which is passed from the scraping device 31 to the saw depth conveying device 36.

In the threshing section 45, the feed chain 4
6 and the feed chamber 46 substantially parallel to the feed chamber 4
7, a saw cylinder 49 is rotatably disposed in the saw chamber 47 about a rotation axis extending in the front-rear direction of the machine body 12. Below the saw cylinder 49, a receiving net 50 for leaking threshered grains is provided, and below the receiving net 50, a swing selecting section 51 is arranged so as to be swingable back and forth. ing.

[0023] Then, due to the swinging action of the swing selecting section 51 and the sorting wind generated from the Karaji 52 and the suction fan 53, the grains mixed with the sprouts are sorted. The grains selected by the swing selection unit 51 are the No. 1 gutter 55 or 2 arranged below.
It is dropped and stored in the gutter 56. The grain culms that have been threshed by the saw cylinder 49 in the saw chamber 47 are taken over from the feed chain 46 to the culm chain 57 provided at the rear of the machine body 12 for processing.

The drive system of the combine 10 using the engine 13 (E / G) as a power source is constructed as shown in FIG. A transmission 59 (T / M) that constitutes a traveling drive system of the combine 10 is provided with an HST 60 that constitutes a main transmission, an auxiliary transmission 61 and a gear train 62, and drives the crawler traveling device 11. Engine 13
From the HST 60 to the HST 60, a belt 63 that is stretched between a pulley 13 b fixed to the output shaft 13 a of the engine 13 and a pulley 60 b fixed to the input shaft 60 a of the HST 60.
Transmission of power is carried out.

The drive shaft 65 is rotatably supported at a predetermined position of the combine 10. From the engine 13 to the drive shaft 65, a pulley 13c fixed to the output shaft 13a of the engine 13 and a pulley 65a fixed to the drive shaft 65.
Power is transmitted by the belt 66 that is stretched between the two. A work machine clutch 67 (tension clutch) is arranged on the belt 66.

The intermediate shaft 69 is rotatably supported at a predetermined position of the combine 10. From the drive shaft 65 to the intermediate shaft 69, a bevel gear 65b fixed to one end of the drive shaft 65.
Then, power is transmitted by the bevel gear 69a fixed to the intermediate shaft 69 so as to mesh with the bevel gear 65b.

From the intermediate shaft 69 to the saw cylinder 49, the intermediate shaft 6
Power is transmitted by a belt 70 that is stretched between a pulley 69b fixed to one end of the shaft 9 and a pulley 49b fixed to one end of an input shaft 49a of the saw cylinder 49.

The pretreatment transmission 71 comprises an HST 72 which constitutes a pretreatment drive continuously variable transmission. Drive shaft 65
From the HST 72 to the pulley 6 fixed to the drive shaft 65
Power is transmitted by a belt 73 that is stretched between 5c and a pulley 72b fixed to an input shaft 72a of the HST 72. The HST 72 has an HST drive motor 75.

The HST 72 has a T / M proportional mode in which the output shaft 71c of the pretreatment transmission 71 rotates in proportion to the rotation of the HST 60, and an E / M in which the output shaft 71c rotates in proportion to the rotational speed of the engine 13. The pre-processing unit 16 and the feed chain 46 of the threshing unit 45 are driven by rotating in the G proportional mode.

The pretreatment drive shaft 76 is rotatably supported at a predetermined position of the combine 10. From the pretreatment transmission 71 to the pretreatment drive shaft 76, it is bridged between a pulley 71d fixed to the output shaft 71c of the pretreatment transmission 71 and a pulley 76a fixed to the pretreatment drive shaft 76. The power is transmitted by the belt 77. A reaping clutch 79 (tension clutch) is arranged on the belt 77, and is configured to stop the pretreatment unit 16 while the threshing unit 45 is being driven, thereby enabling a handcuffing operation.

The pretreatment drive shaft 76 is a bevel gear 76b.
Via the bevel gear 37a that meshes with the bevel gear 76b.
Drive 9

The transmission shaft 80 is rotatably supported at a predetermined position of the combine 10. The pretreatment drive shaft 76
Power is transmitted to the transmission shaft 80 from the bevel gear 76c fixed to the pretreatment drive shaft 76 and the bevel gear 80a fixed to the transmission shaft 80 so as to mesh with the bevel gear 76c.

The transmission shaft 80 drives the cutting blade 30 and also via the gear 32a meshing with the gear 80b fixed to the transmission shaft 80 and the gear 32b meshing with the gear 32a, the conveyor belt 32 of the scraping device 31. To drive.

The drive shaft 81 is rotatably supported at a predetermined position of the combine 10. The pretreatment transmission 7
From the output shaft 71c of No. 1 to the drive shaft 81. Chain 8
2, the transmission of power is performed. And the drive shaft 8
The feed chain 46 is driven by the sprocket 81b fixed to 1.

The control device 85 of the combine 10 is constructed as shown in FIG. That is, the control device 85 includes an input interface 86, a microcomputer 87, and an output interface 88, and is connected to the main switch 90 of the combine 10.

The input interface 86 includes a lift potentiometer 21, a lift raising switch 91, a working machine clutch switch 92, and a cutting clutch switch 9.
3, saw depth main sensor 41, lift shut switch 94, back switch 96, T / M rotation sensor 97,
The HST rotation sensor 98, the engine rotation sensor 99, etc. are connected.

The lift raising switch 91 raises the pretreatment unit 16 when turned on. By continuously turning on the lift raising switch 91, the pretreatment unit 1
6 continuously rises.

The working machine clutch switch 92 is provided on a working clutch lever (not shown), and the combine 1
The work machine clutch 67 is switched so that the driving of 0 and the driving of the pretreatment unit 16 and the threshing unit 45 are interlocked or separated.

The reaping clutch switch 93 is provided on a reaping clutch lever (not shown), and the preprocessing unit 1
6 and the drive of the threshing unit 45 are switched so as to interlock or separate the cutting clutch 79. The lift raising switch 91 is arranged on an operation panel (not shown) and raises the pretreatment unit 16.

The back switch 96 is arranged on a main gear shift operation lever (not shown) of the main transmission and selects the traveling direction of the combine 10. A T / M (transmission) rotation sensor 97 is provided on the output shaft of the traveling HST 60 and detects its rotation. HST rotation sensor 98 is H
It is provided on the output shaft of ST72 and detects its rotation. The engine rotation sensor 99 counts the number of alternator pulses and detects the rotation of the engine 13.

Further, the output interface 89 is provided with a horn 101, a hand-operated lamp 102, and an HS for pretreatment conveyance.
The T drive motor 75 and the E / G stop solenoid 103 are connected.

In the combine 10 having such a structure, after the combine 10 is put in the field, the combine 10 is moved forward in the direction in which the grains are arranged. Then, the divider 25 enters into the array of grain culms, and the chains 27 with claws raise the grain culms. The culm is cut (cut) by the cutting blade 30.

The harvested grain culm is conveyed by the conveyor belt 32 to the saw depth conveying device 36, and the saw depth conveying device 36 is conveyed.
Passed to. While being conveyed toward the feed chain 46 by the saw depth conveying device 36, the grain culm is detected by the saw depth main sensor 41, and at the same time, the stock origin sensor 42 and the tip sensor 43 detect the tip of the grain culm. The position is detected. Then, based on the detection result, the position of the grain culm is adjusted by the saw depth transport device 36 so that the grain culm tip is located between the stock sensor 42 and the tip sensor 43.

The grain culm is transferred from the saw depth conveying device 36 to the feed chain 46. Then, the grain culm is conveyed by the feed chain 46 so that the tips thereof pass through the inside of the saw chamber 47, and is threshed by contact with the saw drum 49. The grain culm conveyed to the end of the feed chain 46 is transferred to the culm chain 57, and the culm chain 5
At 7, the waste is discarded outside the combine 10.

The grains threshed from the culms fall on the receiving net 50, and further pass through the receiving net 50 and are collected on the rocking / sorting section 51. Then, due to the swinging action of the swing selecting section 51 and the sorting wind generated from the Karako 52 and the suction fan 53,
Separated from the culm. The grain selected by the swing selection unit 51 is dropped and stored in the first gutter 55 or the second gutter 56 arranged below.

A control device 85 for such a combine 10
The transfer control of the grain culm in 1 is described with reference to the flowchart shown in FIG.

During operation of the combine 10, the state of the mowing clutch 79 is determined (step S1 in FIG. 4, hereinafter,
(Simply called step S ○). Mowing clutch 79 is ON
When the cutting operation is being performed, the clutch flag is set to ON (step S2), the transmission proportional mode, that is, at the speed proportional to the traveling speed of the combine 10, the saw depth of the preprocessing unit 16 is increased. Transporter 36
Then, the feed chain 46 of the threshing unit 45 is driven (step S3).

In step S1, the cutting clutch 79
When is OFF, the state of the work implement clutch 67 is determined (step S4). In step S4, the work implement clutch 6
When 7 is determined to be ON, the state of the clutch flag of the work implement clutch 67 at the time of the previous determination is determined (step S5). If the clutch flag is ON,
The pretreatment unit 16 and the threshing unit 45 are driven in the T / M proportional mode (step S3) to carry the grain culm.

At this time, if the traveling of the combine 10 is stopped due to interruption of the mowing work or the like, the traveling speed becomes "0".
Therefore, in the T / M proportional mode, the transportation of grain culms in the preprocessing unit 16 and the threshing unit 45 is also stopped.

When the clutch flag at the time of the previous determination is OFF in step S5, the feed chain 46 of the threshing unit 45 is driven in the E / G proportional mode (step S6). That is, when the mowing clutch 79 and the work implement clutch 67 are both OFF, the work implement clutch 6
Since 7 is turned on, the feed chain 46
At a constant speed in E / G proportional mode (eg 0.5 m / s)
It is possible to drive the vehicle by means of to drive the combine 10 while the traveling of the combine 10 is stopped.

In step S4, the work implement clutch 67 is
Is OFF, the clutch flag of the work implement clutch 67 is set to OFF (step S7). Then, the transportation of the grain culms in the pretreatment unit and the threshing unit 45 is stopped (step S8).

As described above, in this embodiment,
When the reaping clutch 79 is OFF and the work implement clutch 67 is ON (from the state where both the reaping clutch 79 and the work implement clutch 67 are OFF, the work implement clutch 67 becomes O
N), the pretreatment transmission 71 is controlled,
Since the feed chain 46 is driven,
With the traveling of the combine 10 stopped, the feed chain 46 of the threshing unit 45 can be driven to perform a handcuffing operation.

Further, the feed chain 46 does not operate when the cutting clutch 79 is turned off (the feed chain 46 turns on the work implement clutch 67).
Since it operates by operation), it is possible to prevent troubles caused by misunderstanding and improve safety.

The control device 85 of the combine 10 as described above.
2nd Embodiment of the conveyance control of the grain culm in 3rd is described with reference to the flowchart shown in FIG.

The output of the T / M rotation sensor 97 determines whether the combine 10 is running or stopped (step S1).
1).

When it is determined in step S11 that the combine 10 is stopped, it is determined whether the saw depth main sensor 41 is ON or OFF (step S12). When the saw depth main sensor 41 is OFF in step S12, it is determined whether the work implement clutch 67 is ON or OFF (step S13).

If the work implement clutch 67 is ON in step S13, it is determined whether the work implement clutch 67 is ON or OFF at the time of the previous determination (step S14).
If the work implement clutch 67 at the time of the previous determination is OFF in step S14, the work implement clutch 67 is released.
The clutch flag of is set to ON (step S1
5).

O of the clutch flag of the work implement clutch 67
N or OFF is determined (step S16). When the clutch flag of the work implement clutch 67 is ON, the feed chain 46 of the threshing unit 45 is driven at a constant speed in the E / G proportional mode (step S17).

That is, when the combine depth 10 is stopped and the saw depth main sensor 41 is OFF, it means that the grain stems are not being cut. In this state, the feed chain 46 is driven. This makes it possible to perform hand-cuffing work.

If it is determined in step S11 that the combine 10 is traveling, or if it is determined in step S12 that the saw depth main sensor 41 is ON, the working machine clutch 67 is released. The clutch flag is set to OFF (step S18).

Then, the working machine clutch 67 is turned on and off.
F is determined (step S19). Work equipment clutch 67
When the combiner 10 is turned on, the combine 10 is running, or the saw depth transfer device 36 of the pretreatment unit 16 is turned on.
Since there is a grain culm inside, the pretreatment unit 16
And the threshing unit 45 are driven in the T / M proportional mode (step S2
Then, the grain culms are transported. In addition, the step S
In 16, the clutch flag of the work implement clutch 67 is OFF
Also in this case, the feed chain 46 is driven in the T / M proportional mode.

If the work implement clutch is OFF in step S13, or if the work implement clutch 67 is OFF in step S19, the feed chain 46
To stop the transportation of the grain culm (step S2
1).

In this embodiment, instead of determining ON / OFF of the cutting clutch 79 of the above-mentioned embodiment, ON / OFF of the saw depth main sensor 41 attached to the saw depth conveying device 36 is determined, I'm trying to control. Even if such control is performed, the combine 10
Since the feed chain 46 can be driven when the traveling of the vehicle is stopped, it is possible to perform a handcuffing operation.

A control device 85 for such a combine 10
A third embodiment of the grain culm conveyance control in the above will be described with reference to the flowcharts shown in FIGS. 6 to 8.

Check the state of the working machine (step S
30). This work machine check is performed according to the flowchart shown in FIG. First, the T / M rotation sensor 97
Based on the output of the aircraft, that is, the combine 10
It is determined whether the vehicle is running or stopped (step S31).

In step S31, if the combine 10 is stopped, the saw depth main sensor 41 is turned ON,
It is determined to be OFF (step S32). Then, in step S32, the output of the saw depth main sensor 41 is turned off.
If it is, it is determined whether the work implement clutch 67 is ON or OFF (step S33). If the work implement clutch 67 is ON in step S33, the state of the work implement clutch 67 at the time of the previous determination is determined (step S34). In step S34, if the work implement clutch 67 was OFF in the previous determination, the mode flag A is set to the E / G proportional mode (step S3).
5).

In step S31, when the combine 10 is running, or in step S32,
When the output of the saw depth main sensor 41 is ON (the grain culm is detected), the mode flag A is set to the T / M proportional mode (step S36).

When the setting of the mode flag A is completed in this way, the traveling distance check in the flowchart of FIG. 6 is performed (step S40). This mileage check is performed according to the flowchart shown in FIG.

ON / OFF of the saw depth main sensor 41
Is determined (step S41). When the saw depth main sensor 41 is ON in step S41, the distance counter is set to 0 (step S42). Then, the mode flag B is set to the T / M proportional mode (step S4).
3).

When the saw depth main sensor 41 is OFF in step S41, the state of the machine is determined (step S44). When the combine 10 is stopped in step S44, the distance counter is set to 0 (step S42), and the mode flag B is set to the T / M proportional mode (step S43).

In step S44, when the combine 10 is traveling, the distance counter starts to integrate the traveling distance of the combine 10. Then, the travel distance accumulated by the distance counter and a predetermined distance set in advance (the travel required from the start of cutting the grain to the actuation (ON) of the main depth sensor 41 of the saw). Distance) is compared (step S45).

In step S45, "distance counter>
If the relationship of "predetermined distance" is not established, the mode flag B is set to the T / M proportional mode (step S43).
In step S45, "distance counter> predetermined distance"
If the relationship is established, the mode flag B is set to the E / G proportional mode (step S46).

When the grain culm transport mode is set, it is determined whether the work implement clutch 67 is ON or OFF (step S5).
1). When the work implement clutch 67 is ON in step S51, the mode flag A is determined (step S52).
If the mode flag A is the T / M proportional mode in step S52, the mode flag B is determined (step S5).
3).

If the mode flag B is the T / M proportional mode in step S53, the preprocessing unit 1
6 and the threshing unit 45 are driven in the T / M proportional mode to carry the grain culm (step S54).

When the mode flag A is set to the E / G proportional mode in step S52, or when the mode flag B is set to the E / G proportional mode in step S53. Then, the preprocessing unit 16 and the threshing unit 45 are driven in the E / G proportional mode to enable the hand-growing work (step S55).

Even when the mode flag B is in the T / M proportional mode, the traveling speed of the combine 10 is "0" when the combine 10 is stopped, so that the preprocessing unit 16 and the threshing unit 45 are used. Is not driven. If the work implement clutch 67 is OFF in step S51, the transport of the grain culms in the pretreatment unit 16 and the threshing unit 45 is stopped (step S56).

As described above, in this embodiment,
When the combine 10 is running, or when the saw depth main sensor 41 is ON, that is, when the grain stalks are being cut, or the cut grain stalks are inside the pretreatment device 16. Mode flag A is set to the T / M proportional mode, the combine 10 stops traveling, the saw depth main sensor 41 is OFF, and the work implement clutch 67 is turned ON from OFF. At the time, that is, when the working machine is driven from the state of not cutting, the mode flag A is set to E / G.
I am trying to set the proportional mode.

When the saw depth main sensor 41 is ON, when the saw depth main sensor 41 is OFF and the combine 10 is stopped, or when the saw depth main sensor 41 is OFF and the combine 10 is running. Even if
When the traveling distance has not reached the predetermined distance, when the mode flag B is set to the T / M proportional mode, the saw depth main sensor 41 is OFF, the combine 10 travels, and the traveling distance reaches the predetermined distance. , Mode flag B to E / G
I am trying to set the proportional mode.

Therefore, even if the combine 10 starts running and the pre-processing section 16 and the threshing section 45 are driven in the T / M proportional mode in which the combine 10 is linked to the vehicle speed, the combine 10 runs for a predetermined distance. When the saw depth main sensor 41 is not turned on, the rotation speed of the output shaft 71c of the pretreatment transmission 71 can be rotated in the E / G proportional mode to enable the hand-saw operation.

[0080]

As described above, according to claim 1 of the present invention, the feed chain can be driven even when the combine is not traveling, so that the handing operation can be performed while the combine is traveling. You can do it. When the work machine clutch and the mowing clutch are both OFF, the feed chain can be driven only when the work machine clutch is ON, and when the work machine clutch and the mowing clutch are both ON, the mowing clutch is OFF. Can improve work safety because the feed chain is not driven.

According to the second aspect of the present invention, when the combine is stopped and the main saw depth sensor is OFF, the work machine clutch is turned ON from OFF to perform the hand cutting work and the normal mowing work. The settings can be easily distinguished.

Further, according to claim 3 of the present invention, the combine is made to travel while the hand-growing work is continued, and when the combine depth main sensor is not turned on even after the combine has traveled a predetermined distance, threshing is performed. Since the parts are driven again in the hand-crawling mode, the hand-cuttering work can be continued without any special operation even if the combiner is moved during the hand-crawling work on the headland or the like.

[Brief description of drawings]

FIG. 1 is a sectional side view of a combine for implementing the present invention.

FIG. 2 is a drive system diagram of the combine shown in FIG.

FIG. 3 is a control system diagram of the combine in FIG.

FIG. 4 is a flowchart showing a process of grain culm transport control.

FIG. 5 is a flowchart showing a process of second grain culm transport control.

FIG. 6 is a flowchart showing a process of third grain culm transport control.

FIG. 7 is a flowchart showing a process of third grain culm transport control.

FIG. 8 is a flowchart showing a process of third grain culm transport control.

[Explanation of symbols]

10 ... Combine 11 ... Crawler traveling device 13 ... Power source (engine) 16 ... Pretreatment unit 41 ... Saw depth main sensor 45 ... Threshing department 46 ... Feed chain 60 ... Continuously variable transmission (HST) for traveling drive 67 ... Work implement clutch 71 ... Continuously variable transmission for pretreatment drive 72 ... HST 79 ... Mowing clutch 85 ... Control device

Continued front page    (72) Inventor Tatsuya Yamazaki             Shimane Prefecture Yatsuka-gun Higashi Izumo-cho Ojiyacho 667             1 Within Mitsubishi Agricultural Machinery Co., Ltd. (72) Inventor Masahiro Nishikori             Shimane Prefecture Yatsuka-gun Higashi Izumo-cho Ojiyacho 667             1 Within Mitsubishi Agricultural Machinery Co., Ltd. (72) Inventor Toshiyuki Ishibashi             Shimane Prefecture Yatsuka-gun Higashi Izumo-cho Ojiyacho 667             1 Within Mitsubishi Agricultural Machinery Co., Ltd. (72) Inventor Takashi Kadowaki             Shimane Prefecture Yatsuka-gun Higashi Izumo-cho Ojiyacho 667             1 Within Mitsubishi Agricultural Machinery Co., Ltd. F term (reference) 2B076 AA03 CA19 DA02 DA04 DA05                       DB06 DB08 EA01 EC11 ED08                       ED09 ED17                 2B084 AA01 BB61 BH01

Claims (3)

[Claims] 1. A continuously variable transmission for traveling drive for transmitting a power source, an output of the power source to a crawler traveling device to drive a combine, and an output of the power source for feeding to a pretreatment section and a threshing section. It is arranged between the power source and the pretreatment drive continuously variable transmission, which is transmitted to the chain to perform cutting and transportation of grain culms, and the power source and the pretreatment drive. Working machine clutch for turning on and off power transmission to and from the continuously variable transmission for vehicle, and a continuously variable transmission for pretreatment driving, which is arranged between the continuously variable transmission for pretreatment driving and the pretreatment section. A harvesting clutch for turning power transmission on and off between the pretreatment unit and the pretreatment unit, and the traveling speed of the combine drive is continuously linked with the continuously variable transmission for pretreatment drive. Combine grain culms that are linked to convey grain culms In feeding device, wherein the cutting clutch is in OFF, the working machine clutch is in ON state, and controls the pre-processing driver for a continuously variable transmission,
A grain culm conveying device of a combine, comprising a control device for driving the feed chain. 2. A power source, a traveling drive continuously variable transmission for transmitting the output of the power source to a crawler traveling device to drive a combine, and an output of the power source for feeding to a pretreatment unit and a threshing unit. A continuously variable transmission for pretreatment drive that transmits to the chain to cut and convey grain, and a main depth sensor that is installed in the pretreatment unit and detects the presence of harvested grain. Disposed between the power source and the continuously variable transmission for pretreatment drive,
A work implement clutch for turning on and off power transmission between a power source and a pretreatment drive continuously variable transmission, and a front clutch disposed between the pretreatment drive continuously variable transmission and the pretreatment unit. And a harvesting clutch for turning on and off power transmission between the processing drive continuously variable transmission and the pretreatment unit, and the traveling drive continuously variable transmission and the pretreatment drive continuously variable transmission are interlocked with each other. In the grain culm transporting device of the combine, which is adapted to convey the grain culm in conjunction with the traveling speed of the combine, when the traveling of the combine is stopped, the saw depth main sensor and the cutting clutch are OFF, and the work clutch In the ON state, a control device for controlling the pretreatment drive continuously variable transmission to drive the feed chain is provided. 3. The control device controls the pretreatment drive continuously variable transmission when the saw depth main sensor does not turn on even after the combine travels to a preset distance. 3. The combine grain culm conveying device according to claim 2, wherein the feed chain is driven.