JP6733114B2 - General-purpose combine - Google Patents

Description

The present invention relates to a general-purpose combine having a reel that rotates by power of an engine and scrapes a crop, and more specifically, a general-purpose combine that changes a rotation speed and a height of the reel according to an operation of a worker during a mowing operation. Regarding

Generally, there is known a general-purpose combine capable of executing automatic reel rotation control for changing the rotation speed of the reel in accordance with the traveling speed during mowing work. This general-purpose combine harvester increases the rotation speed of the reel as the traveling speed increases, so when mowing a crop near the shore, the traveling speed decreases, so the rotation speed of the reel also decreases and the crop is scratched. There is a risk that it will be difficult to get in. Therefore, a general-purpose combine has been proposed, which is capable of performing a forced scraping control for lowering the reel to the lower limit position, moving the reel backward, and further increasing the rotation speed of the reel (see Patent Document 1). ). As a result, this general-purpose combine can make it easier to scrape crops in crops near the shore.

The general-purpose combine described in Patent Document 1 has a selection dial capable of switching a target to be selected from beans and rice in a swing selection for selecting a threshed processed product into a grain and a contaminant such as straw waste. When the beans are set by the selection dial, the rotation speed of the reel in the forced sweep control is set to be lower than the rotation speed of the reel in the forced sweep control when rice is set by the selection dial. It is set. Compared to rice, beans are more easily damaged when scraped by the reel, but this general-purpose combine uses the rotation speed of the reel in forced scraping control when cutting the beans, and the rotation speed when cutting rice. By making the speed lower than that, it is possible to make the beans less likely to be damaged.

Japanese Patent No. 5809003

However, when the harvested crop is the same beans, the general-purpose combine described in Patent Document 1 has a constant rotation speed of the reel in the forced scraping control regardless of the situation of the harvesting work such as the traveling speed. When the forced scraping control is executed, the rotation speed of the reel is not suitable for the current situation of the reaping work, and there is a possibility that defective scraping of the crop by the reel may occur. For example, in the forced scraping control, when the general-purpose combine is performing the mowing work at a traveling speed faster than the traveling speed suitable for the rotation speed of the reel in the forced scraping control, the amount that the reel can scrape. A larger amount of crops may be guided to the reel, which may cause defective scraping of the crop by the reel.

Therefore, an object of the present invention is to provide a general-purpose combine which prevents damage to the grain and prevents defective crops from being picked up by the reel, and which solves the above-mentioned problems.

The present invention comprises a traveling machine body (3) equipped with an engine (E), and a reaping transport section (5) supported by the traveling machine body (3) so as to be able to move up and down. A reaper (4) supported by the traveling machine body (3) so as to be able to move up and down and reaping a crop by the power of the engine (E); A general-purpose combine (1) having a reel (25) that is rotated by the power of to scrape a crop into the reaper (4),
An elevating part (23) for elevating the reel (25) with respect to the mowing part (4),
When performing the reaping work by the reaping transport section (5), it is possible to execute reel rotation follow-up control for changing the rotation speed of the reel (25) by following the traveling speed of the traveling machine body (3). When the reel rotation follow-up control is being executed, the elevating part (23) is controlled so that the reel (25) descends to a predetermined height, and the rotation speed of the reel (25) is predetermined. A control unit (100) capable of executing reel control for setting the rotation speed of
A reel operation section (53B) capable of operating a reel control instruction for causing the control section (100) to execute the reel control when the reel rotation follow-up control is executed,
The control unit (100), in the reel control, according to the crop to be cut by the cutting and conveying unit (5),
A first mode in which the predetermined rotation speed is set to a rotation speed equal to or higher than the rotation speed of the reel at a time point when the reel control instruction (53B) is operated by the reel control instruction;
One of a second mode in which the predetermined rotation speed is set to the rotation speed of the reel at the time when the reel control instruction (53B) is operated by the reel control instruction,
It is characterized by

Further, the present invention comprises a traveling machine body (3) equipped with an engine (E), and a reaping transport section (5) supported by the traveling machine body (3) so as to be capable of moving up and down. ) Is supported by the traveling machine body (3) so as to be able to move up and down, and a reaper (4) for reaping the crops by the power of the engine (E); A general-purpose combine (1) having a reel (25) which is rotated by the power of E) to scrape a crop into the reaper (4),
An elevating part (23) for elevating the reel (25) with respect to the mowing part (4),
When performing the reaping work by the reaping transport section (5), it is possible to execute reel rotation follow-up control for changing the rotation speed of the reel (25) by following the traveling speed of the traveling machine body (3). When the reel rotation follow-up control is being executed, the elevating part (23) is controlled so that the reel (25) descends to a predetermined height, and the rotation speed of the reel (25) is predetermined. A control unit (100) capable of executing reel control for setting the rotation speed of
A reel operation section (53B) capable of operating a reel control instruction for causing the control section (100) to execute the reel control when the reel rotation follow-up control is executed,
The control unit (100), in the reel control, according to the crop to be cut by the cutting and conveying unit (5),
A first mode in which the predetermined rotation speed is set to a rotation speed equal to or higher than the rotation speed of the reel (25) at a time point when the reel control instruction is performed by the reel operation unit (53B);
A second mode in which the predetermined rotation speed is set to a rotation speed that is a predetermined speed lower than the rotation speed of the reel (25) at the time when the reel control instruction is performed by the reel operation unit (53B); Do either one of the
It is characterized by

Further, the present invention comprises a traveling machine body (3) equipped with an engine (E), and a reaping transport section (5) supported by the traveling machine body (3) so as to be capable of moving up and down. ) Is supported by the traveling machine body (3) so as to be able to move up and down, and a reaper (4) for reaping the crops by the power of the engine (E); A general-purpose combine (1) having a reel (25) that rotates by power of E) and scrapes a crop into the reaping section (4),
An elevating part (23) for elevating the reel (25) with respect to the mowing part (4),
When performing the reaping work by the reaping transport section (5), it is possible to execute reel rotation follow-up control for changing the rotation speed of the reel (25) by following the traveling speed of the traveling machine body (3). When the reel rotation follow-up control is being executed, the elevating part (23) is controlled so that the reel (25) descends to a predetermined height, and the rotation speed of the reel (25) is predetermined. A control unit (100) capable of executing reel control for setting the rotation speed of
A reel operation section (53B) capable of operating a reel control instruction for causing the control section (100) to execute the reel control when the reel rotation follow-up control is executed,
The control unit (100), in the reel control, according to the crop to be cut by the cutting and conveying unit (5),
A first mode in which the predetermined rotation speed is set to a rotation speed equal to or higher than the rotation speed of the reel (25) at a time point when the reel control instruction is performed by the reel operation unit (53B) ;
The predetermined rotational speed, and a second mode for changing to follow the traveling speed before Symbol vehicle body (3), one of execution,
It is characterized by

For example, referring to FIG. 7 and FIG. 8, a crop setting means (62) capable of setting a crop to be cut by the cutting transport section (5) is provided,
In the reel control, the control section (100) executes one of the first mode and the second mode according to the crop set by the crop setting means (62).

For example, referring to FIG. 8, in the reel control, when the crop setting means (62) sets a crop to be cut by the cutting and conveying section (5) as a pod, the control section (100) The second mode is executed.

For example, referring to FIG. 1, FIG. 3 and FIG. 8, a crop-specific adjusting element (25, 27) that can be adjusted according to the crop to be cut by the cutting transport unit (5) is provided,
In the reel control, the control unit (100) executes one of the first mode and the second mode according to the adjustment state of the crop-specific adjustment elements (25, 27).

It should be noted that the reference numerals in parentheses above are for comparison with the drawings, but this does not have any influence on the configuration described in the claims.

According to the first aspect of the present invention, the general-purpose combiner performs the second mode even when a crop whose grain is apt to be damaged is scraped by the reel controlled by the reel control. It is possible to prevent the damage of the grain by reducing the rotation speed of the. Further, the general-purpose combine of the present invention holds the rotation speed of the reel before executing the reel control in the second mode, that is, the predetermined rotation speed according to the rotation speed of the reel before executing the reel control. Therefore, even if the same crop is used, a predetermined rotation speed can be set according to the situation of the mowing work, and it is possible to prevent defective scraping of the crop by the reel.

According to the second aspect of the present invention, the general-purpose combine harvester executes the second mode even when a crop whose grain is apt to be damaged is scraped by the reel controlled by the reel control. It is possible to prevent the damage of the grain by reducing the rotation speed of the. Further, the general-purpose combine of the present invention, in the second mode, holds the rotation speed that is a predetermined speed reduced from the rotation speed of the reel before executing the reel control, that is, the rotation speed of the reel before executing the reel control. Since a predetermined rotation speed is set in accordance with the above, it is possible to set a predetermined rotation speed according to the situation of mowing work even for the same crop, and it is possible to prevent defective scraping of the crop by the reel. it can.

According to the present invention according to claim 3, general-purpose combine the grains even if the rake in the reel easily crop by the reel control damage by executing the second mode, predetermined in accordance with the run line speed Since the rotation speed is changed, it is possible to set a predetermined rotation speed according to the situation of the mowing work even for the same crop, and it is possible to prevent defective scraping of the crop by the reel.

According to the present invention of claim 4, the operator can easily set which of the first mode and the second mode is to be executed in the reel control by operating the crop setting means. It is possible to improve workability as well as productivity.

According to the fifth aspect of the present invention, the general-purpose combine can prevent damage to the grain of a pod crop and prevent defective scraping of the crop by the reel.

According to the sixth aspect of the present invention, in the general-purpose combine harvester, when the worker adjusts the crop-specific adjusting element in accordance with the crop to be cut by the cutting and conveying section, either of the first mode and the second mode in the reel control. Since it is also set whether or not to execute, it is possible to reduce the number of items to be set or adjusted by the operator, and it is possible to improve convenience and work efficiency. Further, the worker can prevent forgetting to change the mode executed in the reel control.

1 is a side view showing a general-purpose combine according to an embodiment of the present invention. The top view which shows a general purpose combine. The side view which shows the threshing selection part of a general-purpose combine. The power transmission diagram which shows the power transmission structure from an engine in a general-purpose combine to a pre-processing part. The top view which shows the driving operation part of a general-purpose combine. The top view which shows the operation panel provided in the driving operation part. The block diagram which shows the control part which concerns on embodiment of this invention. The graph which shows the rotation speed of the take-in reel with respect to the traveling speed in the reel rotation automatic control. The flowchart which shows each process which concerns on reel descending mowing control. The side view which shows the raising/lowering operation of a take-in reel. The side view which shows the movement of the take-up reel in the front-back direction.

Embodiments of the present invention will be described below with reference to the drawings. As shown in FIG. 1 and FIG. 2, a general-purpose combine 1 which is a kind of combine has a traveling machine body 3 supported by a pair of left and right crawler traveling devices 2 and a front body supported in front of the traveling machine body 3 so as to be vertically movable. And a processing section (reaping and conveying section) 5.

A threshing selection unit 6 is arranged on the left side of the traveling machine body 3, and a threshing unit 7 for threshing the grain culms cut by the pretreatment unit 5 is provided above the threshing selection unit 6, and the threshing selection unit At the lower part of 6, there is provided a sorting unit 9 for sorting the processed product threshed by the threshing unit 7 into grains and foreign matters such as straw waste. Behind the threshing selection unit 6, a straw processing unit 10 that discharges the contaminants selected by the selection unit 9 to the outside of the machine is arranged. An engine room S in which an engine E is mounted is arranged in front of a right portion of the traveling machine body 3, and a driving operation unit 11 on which a worker is boarded is arranged above the engine room S, and the engine room S and the driving are operated. A grain tank 12 that stores the grains selected by the selection unit 9 is disposed behind the operation unit 11. In addition, a discharge auger 13 that discharges the grain stored in the grain tank 12 to the outside of the machine is arranged above the traveling machine body 3.

The pre-processing unit 5 is supported in the front of the traveling machine body 3 so as to be able to move up and down, and the harvesting unit 4 that harvests crops by the power of the engine E, and is supported by the harvesting unit 4 via the support member 20 so as to be movable up and down. And a take-in reel 25 that rotates by power to scrape the crop into the cutting unit 4. The reaping unit 4 has a conveyance feeder 15 that conveys the cut culm to the threshing unit 7. The transport feeder 15 is supported by the traveling machine body 3 so as to be swingable in the vertical direction, and extends from the front portion of the threshing portion 7 obliquely forward and downward. Left and right mowing frames 16 extending forward are connected to the front end of the feeding feeder 15, and a platform auger 17 for feeding the cut grain culms to the feeding feeder 15 is supported between the left and right mowing frames 16. It A cutting blade 45 (see FIG. 4) for cutting grain in the field is arranged in front of the platform auger 17, and at the front end of the cutting frame 16 in front of the cutting blade 45, there are cut crops and uncut crops. A dividing divider 19 is attached.

A support member 20 having a link structure is supported on the left and right of the upper portion of the mowing frame 16. The support member 20 has one end rotatably supported by the rear upper part of the mowing frame 16 and extends upward, and the other end of the left and right links 21A is rotatable via a rotation shaft 21B. The left and right links 21C are connected to each other and extend forward. The rotary shaft 21B extends in the left-right direction and is connected to the left and right links 21A and 21C, and a reel slide actuator 22 which is a hydraulic cylinder is connected between the rotary shaft 21B and the transport feeder 15. A reel lifting actuator (elevating section) 23, which is a hydraulic cylinder, is connected between the front and rear centers of the left and right links 21C and the mowing frame 16. The front end of the link 21C, that is, the front end of the support member 20 moves in the front-rear direction when the reel slide actuator 22 expands and contracts, and moves in the vertical direction when the reel elevating actuator 23 expands and contracts.

A take-up reel 25 is rotatably supported at the front end of the support member 20, and is located between the divider 19 and the cutting blade 45 and above the divider 19 and the cutting blade 45 in the front-rear direction. The grain culms of the harvested crop divided by the divider 19 are scraped backward by the scraping reel 25, and are mowed by the cutting blade 45 of the mowing unit 4. The cut grain culm is transported to the threshing unit 7 by the platform auger 17 and the transport feeder 15.

As shown in FIG. 3, the threshing unit 7 has a handling chamber 26 into which the grain culm transported from the transport feeder 15 is put, and inside the handling chamber 26, a cylindrical handling cylinder extending in the front-rear direction. 27 is rotatably supported. Helix-shaped handle teeth 29 extending in the front-rear direction are formed on the outer peripheral surface of the handle cylinder 27 extending in the front-rear direction, and a grain culm transported from the transport feeder 15 is disposed in the handle chamber 26 at the front end of the handle cylinder 27. A spiral blade 30 having a spiral shape is formed in order to scrape into the back of the blade. Below the handling cylinder 27, along the outer peripheral surface of the handling cylinder 27, a receiving net 31 formed in an arc shape in a front view is arranged. When the handling cylinder 27 rotates, the handling teeth 29 rub the cut grain culm against the receiving net 31, scrape the grain from the grain culm, and thresh. The processed product in which the threshed grains and foreign substances are mixed is sieved by the receiving net 31. The contaminants left on the net 31 by the sieve pass between the protruding handle teeth formed on the outer circumference of the handle teeth 29 and are sent to the straw processing unit 10.

The sorting unit 9 has an oscillating sorting device 32 that receives the processed material that has fallen from the receiving net 31 and sorts the processed material into grain and foreign matter. Below the swing sorting device 32, the Karato fan 39 that generates sorting wind used for sorting by the swing sorting device 32 and the grains sorted by the swing sorting device 32 are conveyed to the grain tank 12 in order from the front. The 1st helix 40 which does and the 2nd helix 41 which returns the processed material which could not be sorted to the threshing part 7 are arrange|positioned. The 1st helix 40 and the 2nd helix 41 are formed in the helix shape extended in the left-right direction, and convey a grain and a processed material by rotating.

The rocking/sorting device 32 includes a rocking/sorting disc 33 arranged in the front part, a chaff sheave 35 arranged behind the rocking/sorting disc 33, a straw rack 36 arranged behind the chaff sheave 35, and a chaff sheave 35. And a Glensieve 37 disposed below. The oscillating sorting board 33 equalizes the heights of the piled up processed products and sorts the processed products by specific gravity. By the specific gravity selection, the grains having a high specific gravity are separated into the lower part, and the foreign matters having a small specific gravity such as straw waste are separated into the upper part.

The processed products that have been subjected to specific gravity selection are subjected to leakage selection by the chaff sheave 35. The chaff sheave 35 has a plurality of plate-shaped fins extending in the left-right direction, and these fins are arranged side by side in the front-rear direction. Contaminants in the processed material are blown backward by the selection wind of the Kara Minou fan 39 arranged in front of and below the chaff sheave 35. On the other hand, the grain in the processed material falls through the gap between the fins to the grain sieve 37. Further, these fins are supported so as to be rotatable in the front-rear direction, and the degree of opening is changed by rotating the fins, so that the accuracy and speed of selection by the chaff sheave 35 are changed.

Those that have fallen from the chaff sheave 35 and accumulated on the Glen sieve 37 are further finely sorted by leakage. The grain selected by the grain sieve 37 falls to the 1st spiral 40 and is conveyed to the grain tank 12. What remains in the selection of the Glensieve 37 falls on the No. 2 spiral 41 and is returned to the threshing unit 7.

The straw rack 36 causes the grains mixed in the impurities remaining in the leakage selection of the chaf sheave 35 to fall into the second spiral 41. The straw processing unit 10 is arranged behind the Straw rack 36, and the impurities remaining in the Straw rack 36 are sent to the straw processing unit 10 and discharged outside the machine.

As shown in FIG. 4, the devices of the threshing sorting unit 6, such as the handling cylinder 27, the swing sorting device 32, and the Kara Tsubasa fan 39, are configured to be driven by the power from the engine E and are connected to the engine E. Driving and stopping are performed by connecting and disconnecting the threshing clutch 42 interposed in the power transmission path between the transmission shaft A1 and the transmission shaft A2 connected to the device of the threshing selection unit 6. Further, between the engine E and the handle cylinder 27, a handle cylinder transmission device 48 for changing the rotation speed of the handle cylinder 27 is provided. The handle barrel transmission 48 is a pod that is more easily damaged than rice and wheat and has a high speed suitable for threshing rice and wheat by operating the handle barrel shift lever 48A connected to the handle barrel transmission 48. It is configured so that it can be switched between two stages, a low speed suitable for threshing a soybean. In the present embodiment, soybean, rapeseed, sesame and wheat are referred to as pods.

Further, the engine E is provided with an HST main transmission 46 and an auxiliary transmission 47 which is a multi-stage transmission between the crawler traveling device 2 and the crawler traveling device by the main transmission 46 and the auxiliary transmission 47. Power to 2 is shifted.

The devices of the pretreatment unit 5 such as the platform auger 17, the cutting blade 45 and the take-in reel 25 are also driven by the power from the engine E, and the transmission shaft A2 and the transmission shaft A3 connected to the device of the pretreatment unit 5 are connected. Driving and stopping are performed by connecting and disconnecting the reaping clutch (clutch) 43 and the threshing clutch 42 which are interposed in the power transmission path between the two. In addition, below, the reaping clutch 43 and the threshing clutch 42 are also described as a work clutch.

Further, in the power transmission path, a reel transmission A6 that is a belt type continuously variable transmission is provided downstream of the transmission shaft A3 in the power transmission direction. The reel transmission device A6 includes a transmission shaft A4 that is connected to the platform auger 17, cutting blade 45, and reaping clutch 43 that are provided upstream in the power transmission direction via another power transmission device, and a take-up reel 25 that is provided downstream. Is arranged between the transmission shaft A5 and the transmission shaft A5 connected to the transmission shaft A5, and the power transmitted from the transmission shaft A4 is speed-changed and transmitted to the transmission shaft A5. That is, the rotation speed of the take-in reel 25 can be changed by maintaining the operating speeds of the platform auger 17 and the cutting blade 45 by operating the reel transmission A6.

As shown in FIG. 5, the operation section 11 is provided with a driver's seat 49 on which an operator sits. In front of the driver's seat 49, a display meter 50 showing the traveling speed of the general-purpose combine 1 and the remaining amount of fuel is arranged. On the right side of the indicator 50, a multi-steering lever (elevating operation part) 51 for performing a steering operation of the general-purpose combine 1 is arranged. The multi-steering lever 51 is configured to be tiltable in the front-rear direction and the left-right direction with respect to a reference position which is a neutral position in the front-rear left-right direction. By tilting the left-right direction, the steering operation of the general-purpose combine 1 is possible. Therefore, the pretreatment section 5 can be moved up and down by inclining in the front-back direction.

The multi-steering lever 51 includes a reel raising switch and a reel lowering switch (not shown) for moving the take-up reel 25 up and down with respect to the mowing section 4, and a not-shown for moving the take-up reel 25 in the front-back direction with respect to the mowing section 4. A reel forward switch and a reel backward switch. While the reel raising switch is being depressed and is in the depressed state, the reel elevating actuator 23 extends and the take-up reel 25 rises with respect to the mowing unit 4. Then, when the pressed state of the reel raising switch is released or when the take-up reel 25 rises to the reel upper limit height that can be raised with respect to the mowing unit 4, the raising of the take-up reel 25 is stopped. Further, while the reel lowering switch is being pushed down and is in the depressed state, the reel elevating actuator 23 contracts and the take-up reel 25 descends with respect to the mowing unit 4. Then, when the pressed state of the reel lowering switch is released, or when the take-up reel 25 is lowered to the reel lower limit height with respect to the mowing unit 4, the take-up reel 25 is stopped from being lowered.

Further, while the reel advancing switch is being depressed and is in the depressed state, the reel slide actuator 22 is extended and the take-up reel 25 is advanced with respect to the mowing unit 4. Then, when the pressed state of the reel advance switch is released or when the take-up reel 25 has advanced to the reel advance limit position where the take-up reel 25 can advance with respect to the reaper 4, the advance of the take-up reel 25 is stopped. Further, while the reel backward movement switch is being depressed and is in the depressed state, the reel raising/lowering actuator 23 contracts and the take-up reel 25 moves backward with respect to the reaper 4. Then, when the pressed state of the reel reverse switch is released or when the take-up reel 25 moves backward with respect to the reaping section 4 to the reel backward limit position where the take-up reel 25 can move backward, the reverse movement of the take-up reel 25 is stopped.

On the left front side of the driver's seat 49, there is provided a main speed change lever 53 for operating the main speed changer 46 to switch the traveling direction of the general-purpose combine 1 and finely adjust the speed, and on the left side of the main speed change lever 53. Is provided with an auxiliary transmission lever 56 for operating the auxiliary transmission 47. An engine control lever 57 for adjusting the rotation speed of the engine E is arranged behind the sub speed change lever 56, and a dial for operating each device of the general-purpose combine 1 is behind the main speed change lever 53. An operation panel 59 provided with is arranged. In addition to the above, the operation section 11 is provided with an operation section for operating the general-purpose combine 1.

As shown in FIG. 6, the operation panel 59 is provided with a plurality of dials and switches. The operation panel 59 is provided with a reel rotation dial 60, a power clutch switch 61, a crop switching dial (crop setting means) 62, and a selection dial 63 in order from the front. The reel rotation dial 60 is a switch that also functions as a dial switch, and is a switch that adjusts the rotation speed of the take-in reel 25 during mowing work. The power clutch switch 61 is a seesaw-type switch, and has pressing portions 61A and 61B that can be pressed at both left and right ends. By pressing the pressing portions 61A and 61B, connection and disconnection of the work clutch is operated. Switch.

The selection dial 63 is a dial switch, and is a switch that adjusts the opening degree of the fins of the chaf sheave 35 to adjust the accuracy and speed of the selection by the chaf sheave 35. The crop switch dial 62 is a dial switch, and is configured to select a crop to be cut by the general-purpose combine 1. The crop switch dial 62 is configured so that rice, wheat, soybean, rapeseed and buckwheat can be set as crops to be cut, and information on the set crops is transmitted to the control unit 100 shown in FIG. 7.

As shown in FIG. 7, the control unit 100 is provided with a storage device 101 in which parameters and the like used to control each device are stored, and the reel rotation dial 60, the power clutch switch 61, A reel lowering mowing switch (reel operating section) 53A, which is a switch provided on the main shift lever 53, is connected to the crop switching dial 62 and the selection dial 63. The reel lowering mowing switch 53A is a switch that switches between an ON state and an OFF state by a pressing operation. Further, on the input side of the control unit 100, a handling cylinder rotation sensor 102 that detects the rotation speed of the handling cylinder 27, a reel rotation sensor 103 that detects the rotation speed of the take-in reel 25, and a preprocessing unit for the traveling machine body 3 are provided. The pre-processing section height sensor 105 for detecting the height of the reel 5 is connected to the reel height sensor 106 for detecting the height of the take-in reel 25 that moves up and down with respect to the reaper 4 by the reel lifting actuator 23. There is.

To the output side of the control unit 100, the reel lift actuator 23, the reel transmission A6, the harvesting clutch 43 and the threshing clutch 42 are connected. The control unit 100 connects and disconnects the work clutch based on a signal from the power clutch switch 61. When the control unit 100 detects the pressing operation of the pressing unit 61A while the harvesting clutch 43 and the threshing clutch 42 are disengaged, the control unit 100 connects the threshing clutch 42 to drive the device of the threshing selection unit 6, and further presses the pressing unit 61A. When the pressing operation of is detected, the reaping clutch 43 is connected and the device of the preprocessing unit 5 is also driven. In addition, when the control unit 100 detects the pressing operation of the pressing unit 61B when the harvesting clutch 43 and the threshing clutch 42 are connected, the control unit 100 disconnects the harvesting clutch 43, stops the device of the preprocessing unit 5, and further presses. When the pressing operation of the unit 61B is detected, the threshing clutch 42 is disengaged and the device of the threshing selection unit 6 is also stopped.

The control unit 100 also controls the reel transmission A6 based on the signal from the reel rotation dial 60 to adjust the rotation speed of the take-in reel 25. The control unit 100 is configured to be able to execute a reel rotation automatic control (reel rotation follow-up control) that automatically changes the rotation speed of the take-in reel 25 according to the traveling speed during the mowing work. Execution and stop can be switched by pressing. In the reel rotation automatic control, the control unit 100 changes the rotation speed of the take-in reel 25 by following the traveling speed. Further, the control unit 100 can change the rotation speed of the take-in reel 25 by rotating the reel rotation dial 60.

The control unit 100 is rotatable in a rotation speed increasing direction (clockwise direction in FIG. 6) for increasing the rotation speed of the take-in reel 25 and a rotation speed decreasing direction (counterclockwise direction in FIG. 6) opposite to the rotation speed increasing direction. When the reel rotation dial 60 rotates in the rotation speed increasing direction during execution of the automatic reel rotation control, the gradient of the rotation speed of the take-up reel 25 that rises in accordance with the increase in the traveling speed is increased to increase the rotation speed of the take-up reel 25. Makes it easier to increase the rotation speed. When the reel rotation dial 60 rotates in the rotation speed decreasing direction during execution of the reel rotation automatic control, the control unit 100 reduces the gradient of the rotation speed of the take-in reel 25 that rises in accordance with the increase in the traveling speed, and scrapes. The rotation speed of the reel 25 is made difficult to increase.

FIG. 8 is a graph showing the rotation speed of the take-in reel 25 with respect to the traveling speed in the reel rotation automatic control. For example, when the relationship between the traveling speed and the rotation speed of the take-up reel 25 is the current line L3, the control unit 100, when the reel rotation dial 60 is operated in the rotation speed increasing direction, the traveling speed and the take-up reel 25. When the reel rotation dial 60 is further operated in the rotation speed increasing direction, the relationship between the running speed and the rotation speed of the take-in reel 25 is changed to the line L1. Further, when the relationship between the traveling speed and the rotation speed of the take-in reel 25 is the current line L3, the control unit 100 operates the traveling speed and the take-up reel when the reel rotation dial 60 is operated in the rotation speed decreasing direction. When the reel rotation dial 60 is further operated in the rotation speed increasing direction, the relationship between the running speed and the rotation speed of the take-in reel 25 is changed to the line L5.

Further, when the reel rotation dial 60 rotates in the rotation rising direction in the reel rotation manual adjustment state in which the reel rotation automatic control is not executed, the control unit 100 increases the rotation speed of the take-in reel 25 and the reel rotation dial 60. When is rotated in the rotation decreasing direction, the rotation speed of the take-in reel 25 is decreased. Then, in the reel rotation manual adjustment state, the control unit 100 maintains the rotation speed of the take-up reel 25 adjusted by the reel rotation dial 60 regardless of the traveling speed and performs the mowing operation. When soybeans that are more easily damaged than rice or wheat are harvested, the worker reduces the rotation speed of the take-up reel 25 by using the reel rotation dial 60 to prevent soybeans from being damaged. You can In this way, the take-in reel 25 and the handling cylinder 27 are configured as crop-specific adjustment elements that can be adjusted according to the crop to be cut by the pretreatment unit 5.

The control unit 100 causes the take-up reel 25 to descend to the reel lower limit height (predetermined height) when the reel lowering mowing switch 53A is switched to the ON state while executing the reel rotation automatic control. While controlling the reel up-and-down actuator 23, the reel descending mowing control (reel control) is performed in which the rotation speed of the take-in reel 25 is changed to a predetermined rotation speed to perform mowing work. In the reel lowering mowing control, the control unit 100 performs either one of the normal reel lowering mowing control (first mode) and the special reel lowering mowing control (second mode) according to the crop selected by the crop switching dial 62. Execute. In the present embodiment, the operation of pressing the reel lowering mowing switch 53A to switch it to the ON state is a reel lowering mowing operation (reel control instruction).

When rice, wheat or buckwheat is selected by the crop switch dial 62, the control unit 100 executes the normal reel lowering mowing control up to the upper limit speed (set speed) at which the rotation speed of the take-in reel 25 can be increased. The reel transmission A6 is controlled so as to rise. In addition, when soybean or rape is selected as a pod by the crop switching dial 62, the control unit 100 executes special reel descending mowing control to change the rotation speed of the take-in reel 25 to reel descending mowing control. The rotation speed at the time of starting is fixed and maintained at a constant rotation speed regardless of the traveling speed. That is, the control unit 100 controls the rotation speed of the take-up reel 25 to be lower than the rotation speed of the take-up reel 25 in the normal reel down-mowing control in the special reel down-mowing control.

When the reel lowering mowing switch 53A is switched to the OFF state while executing the reel lowering mowing control, the control unit 100 raises the take-up reel 25 to the height before the reel lowering mowing control is executed, and the scraping is performed. The rotation speed of the reel 25 is returned to the rotation speed corresponding to the traveling speed, and the reel descending mowing control is completed.

Note that the control unit 100 in the present embodiment does not execute the reel lowering mowing control even if the reel lowering mowing switch 53A is switched to the ON state in the reel rotation manual adjustment state. The control unit 100 lowers the take-up reel 25 to the reel lower limit height, but maintains the rotation speed of the take-up reel 25. In the reel rotation manual adjustment state, when the reel lowering mowing switch 53A is in the ON state, the control unit 100 is configured to change the rotation speed of the take-in reel 25 by operating the reel rotation dial 60. Has been done. Then, when the reel lowering mowing switch 53A is switched to the OFF state in the reel rotation manual adjustment state, the control unit 100 raises the take-up reel 25 to the height before the reel lowering mowing switch 53A is switched to the ON state. Let Also, when the reel lowering mowing switch 53A is switched to the OFF state in the reel rotation manual adjustment state, the control unit 100 holds the rotation speed of the take-in reel 25.

The present embodiment is configured as described above. Here, the processing relating to the reel lowering and mowing control will be described with reference to FIG.

The control unit 100 determines whether or not the reel lowering and mowing switch 53A is in the ON state in the reel rotation automatic control (step S1). When it is determined in this process that the reel lowering mowing switch 53A is in the OFF state (NO), the control unit 100 determines that the condition for executing the reel lowering mowing control is not satisfied, and the process of step S1 is performed again. It returns and waits until the reel lowering mowing switch 53A is turned on.

When determining in the process of step S1 that the clutch is in the ON state (YES), the control unit 100 determines whether the work clutches of the threshing clutch 42 and the reaping clutch 43 are connected based on the signal received from the power clutch switch 61. The determination is made (step S2). In this process, when it is determined that at least one of the threshing clutch 42 and the mowing clutch 43 is disengaged, that is, the work clutch is not connected (NO), the control unit 100 executes the reel descending mowing control. It is determined that the condition is not satisfied, the process returns to step S1 again, and waits until the work clutch is engaged.

In the process of step S2, when it is determined that the work clutch is connected (YES), the control unit 100 determines that the condition for executing the reel lowering mowing control is satisfied, and the reel lowering mowing control is performed as follows. The processing of steps S3 to S8 is executed. In the reel lowering and mowing control, the control unit 100 first provides the storage device 101 with the height of the take-up reel 25 detected by the reel height sensor 106 and the rotation speed of the take-up reel 25 detected by the reel rotation sensor 103. The reel height stored value and the reel speed stored value are stored (step S3).

After executing the process of step S3, the control unit 100 determines whether or not soybeans or rape seeds that are pods are selected by the crop switching dial 62 (step S4). In this process, when rice, wheat or buckwheat is selected by the crop switch dial 62 (NO), the control unit 100 determines to execute the normal reel lowering mowing control, and executes the normal reel lowering mowing control process. (Step S5).

In the normal reel lowering mowing control process, the control unit 100 first controls the reel elevating actuator 23 so that the take-in reel 25 lowers to the reel lower limit height as shown in FIG. Then, the control unit 100 lowers the take-up reel 25 to the reel lower limit height (the position indicated by the solid line in FIG. 10), and then the reel transmission A6 so that the rotation speed of the take-up reel 25 increases to the upper limit speed. To control. In the normal reel descending/mowing control process, when the take-up reel 25 is already located at the reel lower limit height, the control unit 100 keeps the take-up reel 25 at the reel lower limit height. To control. Further, in the normal reel descending and mowing control process, when the rotation speed of the take-up reel 25 is already at the upper limit speed, the control unit 100 keeps the rotation speed of the take-up reel 25 at the upper limit speed. Control A6.

In the process of step S4, when it is determined that soybean or rapeseed is selected (YES), the control unit 100 determines to execute the special reel descending mowing control, and executes the special reel descending mowing control process ( Step S6).

In the special reel descending mowing control process, the control unit 100 first controls the reel elevating actuator 23 so that the take-in reel 25 descends to the reel lower limit height. Then, the control unit 100 lowers the take-up reel 25 to the reel lower limit height, and thereafter, the reel transmission A6 is maintained so that the rotation speed of the take-up reel 25 is maintained at the rotation speed stored in the reel speed storage value. To control. That is, the control unit 100 maintains the rotation speed of the take-up reel 25 at the rotation speed of the take-up reel 25 before the reel-down mowing control is executed in the special reel descending mowing control. In the special reel descending and mowing control process, when the take-up reel 25 is already located at the reel lower limit height, the control unit 100 keeps the take-up reel 25 at the reel lower limit height so that the reel lift actuator 23. To control.

After executing the processing of step S5 or step S6, the control section 100 determines whether or not the reel lowering and mowing switch 53A is in the ON state (step S7). In this process, when it is determined that the reel lowering mowing switch 53A is in the ON state (YES), the control unit 100 determines that the reel lowering mowing control ending condition is not satisfied, and the process of step S4 is performed again. Execute. That is, the control unit 100 continues the reel descending mowing control while the reel descending mowing switch 53A is in the ON state.

In the process of step S7, when it is determined that the reel lowering mowing switch 53A is in the OFF state (NO), the control unit 100 determines that the reel lowering mowing control ending condition is satisfied, and the take-up reel 25 is the reel. The reel elevating actuator 23 is controlled so as to rise to the height stored in the height memory value, the rotation speed of the take-in reel 25 is returned to the speed corresponding to the traveling speed, and the reel lowering mowing control is completed (step S8).

As described above, the general-purpose combine 1 according to the present embodiment executes the special reel descending mowing control even when the crops such as the pods whose grains are easily damaged are scraped by the scraping reel 25 by the reel descending scraping control. By doing so, the rotation speed of the take-in reel 25 can be reduced and damage to the grain can be prevented as compared with the normal reel lowering and mowing control. The general-purpose combine 1 holds the rotation speed of the take-up reel 25 before the reel down take-up control is executed in the special reel down take-up control, that is, the take-up reel before the reel down take-up control is executed. Since the rotation speed of the take-up reel 25 in the special reel descending mowing control is set according to the rotation speed of 25, the take-up reel 25 in the special reel descending mowing control is set according to the mowing work situation even for the same crop. It is possible to set the rotation speed and prevent defective picking of the crop by the picking reel 25.

Further, in the present embodiment, the operator can easily set which of the normal reel descending mowing control and the special reel descending mowing control is to be executed in the reel descending mowing control by operating the crop switching dial 62. Therefore, it is possible to improve convenience and work efficiency.

Further, since the general-purpose combine 1 of the present embodiment executes the special reel descending mowing control in the reel descending mowing control when soybean or rape which is a pod is selected by the crop switching dial 62, the pod It is possible to prevent defective crops from being scraped by the scraping reel 25 while preventing damage to the grain of the crop.

In the present embodiment, the control unit 100 maintains the rotation speed of the take-up reel 25 at the rotation speed of the take-up reel 25 before the reel-down take-up control is executed in the special reel descending mowing control. Configured, but not limited to this. In the special reel lowering mowing control, the control unit 100 sets the rotation speed of the take-up reel 25 to a rotation speed that is a predetermined speed lower than the rotation speed stored in the reel speed memory value, that is, by the reel lowering mowing switch 53A. It may be configured to set a rotation speed that is a predetermined speed reduced from the rotation speed of the reel at the time when the reel descending and mowing operation is performed. In this case, the general-purpose combine 1 executes the special reel descending mowing control even when the crops such as pods whose grains are easily damaged are scraped by the scraping reel 25 by the reel descending scraping control. The rotation speed of the take-in reel 25 can be reduced as compared with the normal reel lowering mowing control to prevent damage to the grain. In the special reel lowering mowing control, the general-purpose combine 1 holds a rotation speed that is a predetermined speed lower than the rotation speed of the take-up reel 25 before the reel lowering mowing control, that is, the reel lowering mowing control is performed. Since the predetermined rotation speed is set according to the rotation speed of the scraping reel 25 before execution, even if the crop is the same, the predetermined rotation speed can be set according to the situation of the mowing work. It is possible to prevent defective picking of the crop by the reel 25.

Further, in the special reel lowering mowing control, the control unit 100 sets the rotation speed of the take-in reel 25 to the traveling speed in substantially the same manner as when the reel rotation automatic control is executed without executing the reel lowering mowing control. It may be configured to follow the change. In this case, the general-purpose combine 1 executes the special reel descending mowing control even when the crops such as pods whose grains are easily damaged are scraped by the scraping reel 25 by the reel descending scraping control. The rotation speed of the take-in reel 25 can be reduced as compared with the normal reel lowering mowing control to prevent damage to the grain. Further, since the general-purpose combine 1 changes the rotation speed of the take-up reel 25 in accordance with the traveling speed in the special reel descending mowing control, even if the crop is the same, a predetermined rotation speed is selected according to the situation of the mowing work. Can be set, and defective picking of the crop by the picking reel 25 can be prevented.

In addition, in the present embodiment, the control unit 100 determines whether to execute the normal reel descending mowing control or the special reel descending mowing control according to the crop selected by the crop switching dial 62. Not limited to this, it is configured to determine whether to execute the normal reel descending mowing control or the special reel descending mowing control according to the rotation speed of the handling cylinder 27 detected by the handling cylinder rotation sensor 102. May be. In addition, the control unit 100 determines whether to execute the normal reel descending mowing control or the special reel descending mowing control according to whether the handle barrel shifting lever 48A is set to the high speed or the low speed. May be configured. Further, the control unit 100 performs normal reel descending mowing control and special reel descending mowing control according to the rotation speed of the take-up reel 25 detected by the reel rotation sensor 103 in a state where the reel descending mowing control is not executed. It may be configured to determine which to perform. In this way, the normal reel descending mowing control and the special reel descending mowing control are performed according to the adjustment states of the handling cylinder 27 and the take-up reel 25, which are the crop-specific adjusting elements that can be adjusted according to the crop to be cut by the preprocessing unit 5. When deciding which of the two is to be executed, when the worker adjusts the handling cylinder 27 and the take-up reel 25 according to the crop to be mowed by the pretreatment unit 5, the normal reel descending mowing control is performed in the reel descending mowing control. Since it is also set whether to execute or the special reel lowering mowing control, the number of items set or adjusted by the operator can be reduced, and the convenience and the work efficiency can be improved. Further, the worker can prevent forgetting to change the control executed in the reel lowering and mowing control.

In addition, the control unit 100 determines which of the normal reel descending mowing control and the special reel descending mowing control is to be executed, as the adjustment state of the crop-specific adjusting element, according to the rotation of the handling cylinder 27 and the take-up reel 25. Not limited to this, it may be configured to determine whether to execute the normal reel descending mowing control or the special reel descending mowing control according to the opening degree of the fins of the chaff sheave 35. Further, the control unit 100 is configured to be able to detect a dedicated part to be attached to the general-purpose combine 1 according to the crop to be cut, and as the adjustment state of the crop-specific adjusting element, that is, the exclusive part is used. It may be configured to determine whether to execute the normal reel descending mowing control or the special reel descending mowing control depending on whether or not the component is attached. As described above, the control unit 100 performs either the normal reel descending mowing control or the special reel descending mowing control according to the adjustment state of the crop-specific adjusting element that can be adjusted according to the crop, in addition to the take-up reel 25. It may be configured to decide whether to execute. Further, the control unit 100 executes either the normal reel descending mowing control or the special reel descending mowing control according to the adjustment state of one of the crop-specific adjusting elements of the plurality of crop-specific adjusting elements. May be configured to determine whether to execute the normal reel descending mowing control or the special reel descending mowing control by making a composite judgment based on the adjustment states of a plurality of crop-specific adjustment elements. It may be configured as follows.

Further, in the present embodiment, the general-purpose combine 1 has rice, wheat, buckwheat, soybean, and rape as the crops that can be selected by the crop switching dial 62. It may be configured to be settable.

Further, in the present embodiment, the control unit 100 is configured to be able to execute the reel descending and mowing control when the reel rotation automatic control is being executed, but the present invention is not limited to this, and the reel rotation manual adjustment state is also the reel. The descending reaping control may be configured to be executable.

Further, in the present embodiment, the control unit 100 lowers the take-up reel 25 to the reel lower limit height in the reel lowering and mowing control, but the present invention is not limited to this. It may be configured to control the reel slide actuator 22 so as to move the take-up reel 25 in the front-rear direction while lowering it to the height. In the reel lowering and mowing control, the control unit 100 moves the take-up reel 25 to the above-mentioned reel reverse limit position (the position indicated by the chain double-dashed line in FIG. 11) as shown in FIG. Forced scraping control for scraping can be executed, and the scraping cutting control is performed in which the scraping crop 25 is stood up and scraped by moving the scraping reel 25 to the reel forward limit position (the position shown by the solid line in FIG. 11). Can be performed.

Further, in the present embodiment, the reel lowering mowing switch 53A, which is the reel operating portion, is provided on the main shift lever 53, but in addition to the main shifting lever 53, a reel operation such as a switch capable of reel descending mowing operation is performed. The unit may be configured to be provided in the driving operation unit 11.

1 General-purpose combine 3 Traveling machine body 4 Harvesting section 5 Harvesting transport section (pretreatment section)
23 Lifting unit (reel lifting actuator)
25 Crop-specific adjustment elements (reel, take-in reel)
27 Crop-specific adjustment elements (handler)
53A Reel operation part (reel lowering mowing switch)
62 Crop setting means (Crop switching dial)
100 control unit E engine

Claims (6)

A traveling machine body equipped with an engine and a reaping and conveying section supported by the traveling machine body so as to be able to move up and down are provided. In a general-purpose combine having a mowing part and a reel supported by the mowing part so as to be vertically movable and rotated by the power of the engine to scrape a crop into the mowing part,
An elevating part that elevates and lowers the reel with respect to the mowing part,
When performing the mowing operation by the mowing and conveying section, it is possible to execute reel rotation follow-up control that changes the rotation speed of the reel by following the traveling speed of the traveling machine body, and executes the reel rotation follow-up control. A control unit capable of executing reel control for controlling the elevating unit so that the reel descends to a predetermined height and setting the rotation speed of the reel to a predetermined rotation speed,
A reel operation section capable of operating a reel control instruction for causing the control section to execute the reel control when the reel rotation follow-up control is executed,
The control unit, in the reel control, according to the crop to be cut by the cutting and conveying unit,
A first mode in which the predetermined rotation speed is set to a rotation speed equal to or higher than the rotation speed of the reel at a time point when the reel control unit operates the reel control instruction;
One of a second mode in which the predetermined rotation speed is set to the rotation speed of the reel at a time point when the reel control unit operates the reel control instruction,
A general-purpose combine that is characterized by that. A traveling machine body equipped with an engine and a reaping and conveying section supported by the traveling machine body so as to be able to move up and down are provided. In a general-purpose combine having a mowing part and a reel supported by the mowing part so as to be vertically movable and rotated by the power of the engine to scrape a crop into the mowing part,
An elevating part that elevates and lowers the reel with respect to the mowing part,
When performing the mowing operation by the mowing and conveying section, it is possible to execute reel rotation follow-up control that changes the rotation speed of the reel by following the traveling speed of the traveling machine body, and executes the reel rotation follow-up control. A control unit capable of executing reel control for controlling the elevating unit so that the reel descends to a predetermined height and setting the rotation speed of the reel to a predetermined rotation speed,
A reel operation section capable of operating a reel control instruction for causing the control section to execute the reel control when the reel rotation follow-up control is executed,
The control unit, in the reel control, according to the crop to be cut by the cutting and conveying unit,
A first mode in which the predetermined rotation speed is set to a rotation speed equal to or higher than the rotation speed of the reel at a time point when the reel control unit operates the reel control instruction;
One of a second mode in which the predetermined rotation speed is set to a rotation speed that is a predetermined speed lower than the rotation speed of the reel at the time when the reel operation instruction of the reel operation unit is performed To do
A general-purpose combine that is characterized by that. A traveling machine body equipped with an engine and a reaping and conveying section supported by the traveling machine body so as to be able to move up and down are provided. In a general-purpose combine having a mowing part and a reel supported by the mowing part so as to be vertically movable and rotated by the power of the engine to scrape a crop into the mowing part ,
An elevating part that elevates and lowers the reel with respect to the mowing part,
When performing the mowing operation by the mowing and conveying section, it is possible to execute reel rotation follow-up control that changes the rotation speed of the reel by following the traveling speed of the traveling machine body, and executes the reel rotation follow-up control. A control unit capable of executing reel control for controlling the elevating unit so that the reel descends to a predetermined height and setting the rotation speed of the reel to a predetermined rotation speed,
A reel operation section capable of operating a reel control instruction for causing the control section to execute the reel control when the reel rotation follow-up control is executed,
The control unit, in the reel control, according to the crop to be cut by the cutting and conveying unit,
A first mode in which the predetermined rotation speed is set to a rotation speed equal to or higher than the rotation speed of the reel at a time point when the reel control unit operates the reel control instruction ;
The predetermined rotational speed, executes the second mode to change to follow the traveling speed before Symbol vehicle body, one of,
A general-purpose combine that is characterized by that. A crop setting means capable of setting crops to be cut by the cutting transport section,
In the reel control, the control unit executes one of the first mode and the second mode according to the crop set by the crop setting means.
The general-purpose combine harvester according to any one of claims 1 to 3, wherein: The control unit executes the second mode in the reel control when the crop to be cut by the cutting and conveying unit is set to a pod by the crop setting unit.
The general-purpose combine harvester according to claim 4, wherein A crop-specific adjusting element that can be adjusted according to the crop to be cut by the cutting transport unit is provided.
In the reel control, the control unit executes one of the first mode and the second mode according to an adjustment state of the crop-specific adjustment element,
The general-purpose combine harvester according to any one of claims 1 to 5, wherein:

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