JP3013036B2 - Combine - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a combine harvester in which a culm is cut by a cutting unit while being moved by a traveling crawler, and the threshing unit is threshed for harvesting.

[0002]

2. Description of the Related Art Conventionally, as shown in JP-A-56-5013, a threshing unit and a cutting unit for continuously performing harvesting work are provided, and the driving speed of a cutting unit for transmitting the power of an engine is steplessly changed. There is a technology for providing a continuously variable cutting speed change mechanism.

[0003]

In the above prior art, a cutting speed change lever is connected to a traveling speed change lever, and the stepless cutting speed change mechanism is switched by operating the cutting speed change lever by manual operation of the traveling speed change lever. When changing the gear ratio between the running speed and the cutting speed according to the cutting conditions, it is necessary to change the position of the fulcrum of the cutting shift lever or change the length of the shifting rod connected to the cutting shift lever. In this case, the harvesting operation is interrupted and the adjustment operation is performed, and there is a problem that it is not easy to improve the handling operability and the efficiency of the harvesting operation.

Further, Japanese Utility Model Application Laid-Open No. 59-163343 discloses
As disclosed in Japanese Utility Model Application Laid-Open No. 60-44539, there is a technique for detecting a moving speed of a harvesting operation and automatically changing a drive speed of a reel for scraping an uncut culm. Since the driving speed is almost constant, even if the threshing unit increases the moving speed during low-load work, low-load operation is continued until the culm of the mowing unit reaches the threshing unit, during which the operator mistakes the operation. The speed of movement is even faster,
Even if the threshing unit is likely to be overloaded and the moving speed of the threshing unit is low during high-load work, the high-thickness operation is continued until the grain culm supplied to the threshing unit is reduced. The misrecognition operation makes the movement speed even slower,
The threshing unit operates at a low load and the work efficiency is likely to decrease.
There is a problem that the moving speed cannot be easily and appropriately maintained with respect to the grain load, and that the operation operation cannot be simplified and the harvesting operation efficiency cannot be easily improved.

[0005]

According to the present invention, a threshing unit is provided on a machine on which a traveling crawler is mounted, and the harvested grain culm is fed from the mowing unit provided with a cutting blade and a grain culm transport mechanism to the threshing unit. A cutting input shaft and a cutting transmission member for inputting a driving force to the cutting unit, and a cutting sensor for detecting driving of the cutting unit, while feeding the culm to the chain and holding the culm conveyed by the feed chain with the handling cylinder of the threshing unit. When, a vehicle speed sensor for detecting the speed of travel crawlers, and a control circuit for storing the transmission data reaper by crop conditions, the combine provided with a selector switch for selecting crop conditions,
When threshing sensor and reaper sensor operation of the threshing portion and the reaper is detected by the input speed sensor reaper a vehicle speed sensor, to determine whether to change the reaper speed-out bets reaper rate be changed, leaving It is configured to automatically change the grain culm conveyance speed of the cutting unit for the feed chain of the grain unit, and under the harvesting state, determine whether the cutting unit speed can be changed,
Since the grain culm transport speed of the reaping unit is changed, it is possible to easily prevent a change in the reaping unit speed except when the harvesting operation is being performed at a certain or more moving speed. obtained easily prevent clogging or the like, and to obtain aim and facilitate improvement in simplicity and harvesting efficiency of the oPERATION operation.

[0006]

Embodiments of the present invention will be described below in detail with reference to the drawings. FIG. 1 is a control circuit diagram, FIG. 2 is a side view of the combine, and FIG. 3 is a plan view thereof, wherein (1) is a track frame on which a traveling crawler (2) is mounted, and (3) is the track frame ( 1) A machine installed on the top, (4) is a threshing unit in which a feed chain (5) is stretched to the left and a handling cylinder (6) and a processing cylinder (7) are built in, (8) is a cutting blade and The harvesting unit equipped with a grain culm transport mechanism, etc. (9) is a straw chain (1)
0) The straw processing unit that faces the end, (11) is the driver's seat (1)
2) and a driver's cab including a driving operation unit (13), (14)
Is the engine room in which the engine (14a) is installed, (1)
Reference numeral 5) denotes a grain tank for storing the grains from the threshing unit (4), which is configured to continuously perform cutting and threshing operations.

In the figure, (16) is a lifting / lowering and steering operation lever for raising / lowering the reaping unit (8) and performing a steering operation by right and left side clutch control, (17) is a traveling main speed change lever, and (18) is The sub transmission lever, (19) is a mowing clutch lever, and (20) is a threshing clutch lever.

Further, as shown in FIGS. 4 and 5, a transmission shaft (22) is supported on a support shaft (3a) of the machine base (3) via a bearing body (21) to thereby drive the engine (14a). The drive shaft (22) is provided with a mowing drive pulley (23) for transmitting the force, and the mowing drive case (24) of the mowing portion (8) is provided.
To support the cutting input shaft (25). And a cutting speed change mechanism (29) including a pair of split pulleys (26) and (27) and a belt (28), and the transmission shaft (22).
And the split pulley (26) (2)
7), and a continuously variable transmission cam (30) is provided on the split pulley (26) of the transmission shaft (22).

As shown in FIGS. 6 and 7, a mowing speed change motor (32), which is a speed change operation member, is provided inside the machine side box (31) of the operation operation portion (13).
The sector gear (3) always meshed with the output gear (33) of (2).
4) and the transmission rods (35) (3)
6), transmission arm (37) (38) and transmission shaft (39)
Through the sector gear (3) to the continuously variable cam (30).
4) The steplessly variable speed cam (30) is operated and controlled by the forward / reverse control of the motor (32) via a sector gear (34) or the like to change the effective diameter of the split pulley (26). Then, the output rotation speed of the belt (28) is changed, and the reaping conveyance speed of the reaping unit (8) is continuously variable. In addition, a potentiometer type cutting speed change sensor (40) for detecting a rotation angle of the gear (34) in conjunction with the sector gear (34) is provided.
Thus, the mowing shift position by the motor (32) is detected.

Further, as shown in FIG. 1, a potentiometer type main shift sensor (41) for detecting a main shift position in conjunction with the main shift lever (17), and an auxiliary shift lever (18).
A change-over switch type sub-speed sensor (42) for detecting a sub-shift position in conjunction with a motor, a pickup type engine speed sensor (43) for detecting the speed of the engine (14a), and a speed of the traveling crawler (2). A pick-up type vehicle speed sensor (44) for detecting, and a pick-up type cutting speed sensor (45) for detecting the driving speed of the cutting blade and the transport mechanism of the cutting unit (8).

A harvesting / conveying speed control circuit (46) composed of a microcomputer is provided, and the sensors (40) to (45) are connected to the control circuit (46) by inputting the hydraulic pressure of the engine (14a). (47) for detecting that the pressure is rising to an appropriate pressure, a switch (48) for detecting that the battery charging operation of the engine (14a) is being performed properly, and a reaping and threshing clutch lever (19). ) And (20) are provided with mowing and threshing switches (49) and (50) for detecting a clutch engagement operation, and each of the switches (47) to (50) is connected to the control circuit (4).
6).

The speed increasing circuit (51) and the speed reducing circuit (5)
2) A cutting speed change motor (32) is output-connected to the control circuit (46) via the control circuit (46), and based on the vehicle speed detected by each sensor (41) (42), the cutting speed change motor (32) is connected.
Is operated to change the reaping conveyance speed of the reaping section (8).

[0013] Then,如rather in FIG. 8, reaper transport ratio and is the ratio of the conveying speed reaper for vehicle speed (Reaper conveying speed / vehicle speed)
The relationship between the vehicle speed, relative to the conventional fixed value indicated by the phantom line, one which changes as shown by the solid line as a quadratic curve, the transport ratio reaper when the vehicle speed is low is greatly changed, the average yield Even if the harvesting transfer speed is set based on the vehicle speed of the work, the change in the harvesting transfer speed during the low-speed traveling harvesting operation is made smaller than the vehicle speed compared with the high-speed traveling harvesting operation, and the minimum speed (main Mowing speed at the time of neutral shift = auxiliary shift 1
(High cutting speed).

Further, in FIG. 1, each sensor (43)-
(45) and rotation of the engine (14a) by means of the switches (47) to (50), the threshing unit (4) and the cutting unit (8)
The control circuit (46) determines whether or not the driving speed of the reaping unit (8) is equal to or higher than a set value, and only when the reaping unit (8) is driven, (32) is made operable, and the control operation by the motor (32) is performed.

Also, a manual switch (5
3) (54) is connected to the control circuit (46), and the manual control of the manual switches (53) and (54) is performed similarly to the automatic control operation by the output of the sensors (41) and (42) for detecting the vehicle speed. The mowing speed change motor (32) can be operated only when the mowing part (8) is driven.

A select switch (55) is provided for setting a reference value of the reaping conveyance speed of the reaping section (8) which is changed by the reaping speed change motor (32).
Is connected to the control circuit (46) so that the harvesting / conveying speed of the mowing unit (8) can be selected in a stepless manner according to crop conditions and the like.

As is apparent from the above description, a threshing unit (4) is provided on a machine (3) on which a traveling crawler (2) is mounted, and a mowing unit (8) equipped with a cutting blade and a grain culm transport mechanism is used for mowing. The grain culm is supplied to the feed chain (5) of the threshing unit (4), and the grain culm conveyed by the feed chain (5) is threshed by the handling cylinder (6) of the threshing unit (4).
Cutting input shaft (25) for inputting driving force to the cutting unit (8)
A mowing transmission motor (32) as a mowing transmission member, a mowing switch (49) as a mowing sensor for detecting driving of the mowing unit (8), and a vehicle speed sensor (44) for detecting a speed of the traveling crawler (2). When a control circuit for storing the transmission data reaper by crop conditions (46), in combine to provide a select switch (55) for selecting a crop conditions,
When the threshing switch (50) and the reaping switch (49) detect the operation of the threshing unit (4) and the reaping unit (8), the input of the vehicle speed sensor (44) and the reaping speed sensor (45) causes the reaping unit. (8) to determine the rate of change propriety, door-out of the reaper (8) speed be changed, automatically changing the grain稈搬transmission speed of cutting the isolation portions (8). And under harvesting conditions,
The mowing unit (8) judges whether the speed change is possible or not, and changes the speed of the mowing unit (8) except when the harvesting operation is performed at a moving speed higher than a certain speed by changing the grain culm conveying speed of the mowing unit (8). To prevent culm clogging in the harvesting section (8) grain culm transport mechanism
And, it is configured so as attained and improvement in simplicity and harvesting efficiency of the OPERATION Operation.

The present embodiment is constructed as described above, in which the engine (14a) is operated, the cutting and threshing clutch levers (19) and (20) are turned on, and the harvesting operation is performed by moving in the field. As shown in FIG. 10 , the presence or absence of rotation is detected by the engine rotation sensor (43) and the engine (14) is detected.
a) Hydraulic pressure and charging action, and each of the levers (19)
The on operation of (20) is detected by the switches (47) to (50), the movement of the combine is confirmed by the vehicle speed sensor (44), and the harvesting speed sensor (4) is detected.
The operation of the reaping unit (8) is confirmed by 5), and the control circuit (46) determines that the reaping shift for changing the driving speed of the reaping unit (8) is possible.

The vehicle speed is calculated by inputting the main shift position from the main shift sensor (41) and the sub-shift position from the sub-shift sensor (42), and calculating the vehicle speed from the reaper shift sensor (40). And the harvesting transport speed is calculated based on the vehicle speed, as shown in FIG. 9 , and when the sub-shift is at a low speed (L1, L2, L3, L4) and at a high speed (H
1, H2, H3, H4) and the main speed change (forward 1,
The raising speed is calculated by the combination with (2, 3, 4), and the control circuit (4) storing this data in advance is used.
The mowing speed change motor (3)
2) it is forward or reverse operation, controls the operation of the cutting speed change mechanism (29) via a sector gear (34) and continuously variable <br/> speed cam (30), interlocking the conveying speed reaper to vehicle Then, the harvesting work is performed while changing.

[0020]

As apparent from the above embodiments, the present invention provides a threshing unit (4) on a machine (3) on which a traveling crawler (2) is mounted, and includes a cutting blade and a grain culm transport mechanism. The harvesting culm is supplied from the reaping unit (8) to the feed chain (5) of the threshing unit (4), and the culm conveyed by the feed chain (5) is threshed by the handle cylinder (6) of the threshing unit (4). At the same time, a cutting input shaft (25) and a cutting transmission member (32) for inputting a driving force to the cutting unit (8), a cutting sensor (49) for detecting driving of the cutting unit (8), and a traveling crawler (2). A) a vehicle speed sensor (44) for detecting the speed of
Control circuit for storing the transmission data reaper by crop conditions (4
6) and a select switch (55) for selecting crop conditions
The operation of the threshing unit (4) and the reaping unit (8) is controlled by the threshing sensor (50) and the reaping sensor (4).
When 9) is detected, the input of the vehicle speed sensor (44) and the cutting speed sensor (45), determines the reaper (8) a rate of change propriety,-out bets reaper (8) speed changeable, which was constructed so as to change cutting preparative portion cereal稈搬feed rate of (8) automatically, culms under harvesting conditions, to determine the reaper (8) speed change propriety, reaper (8) Since the transport speed is changed, it is possible to easily prevent a change in the speed of the reaper (8) except when the harvesting operation is being performed at a moving speed equal to or higher than a certain value,
Reaper (8) can be easily prevented稈詰Ri or the like in the grain稈搬feed mechanism, in which the like improve the simplicity and harvesting efficiency of the OPERATION Operation can be easily achieved.

[Brief description of the drawings]

FIG. 1 is a control circuit diagram showing one embodiment of the present invention.

FIG. 2 is a side view of the combine.

FIG. 3 is a plan view of the same.

FIG. 4 is an explanatory diagram of a transmission mechanism.

FIG. 5 is an explanatory view of the same.

FIG. 6 is an explanatory view of a speed change operation member.

FIG. 7 is an explanatory view of the same.

FIG. 8 is a shift output diagram.

FIG. 9 is a diagram showing a triggered conveyance output diagram.

FIG. 10 is a flowchart .

[Explanation of symbols]

 (2) Traveling crawler (3) Machine stand (4) Threshing unit (5) Feed chain (6) Handling cylinder (8) Cutting unit (25) Cutting input shaft (32) Cutting speed change motor (cutting speed change member) (44) Vehicle speed sensor (45) Cutting speed sensor (46) Control circuit (50) Threshing switch (threshing sensor) (55) Select switch

Continued on the front page (72) Inventor Hideyuki Watanabe 1-32 Chayacho, Kita-ku, Osaka-shi Inside Yanmar Agricultural Machinery Co., Ltd. (72) Inventor Hirotaka Otsuka 1-32 Chayacho, Kita-ku, Osaka-Yanmar Agriculture Inside Machinery Co., Ltd. (72) Inventor Satoshi Kasuya 1-32 Chayacho, Kita-ku, Osaka-shi Yanmar Agricultural Machinery Co., Ltd. (72) Inventor Makoto Goto 1-32 Chayacho, Kita-ku, Osaka-Yanmar Agricultural Machinery Inside (72) Inventor Mutsumi Machida 428 Enami, Okayama-shi, Okayama Prefecture Inside Sairei Industry Co., Ltd. (56) References JP-A-56-5013 (JP, A) JP-A-60-44539 (JP, U) Actually open sho 59-163343 (JP, U)

Claims (1)

(57) [Claims] 1. A threshing unit (4) is provided on a machine (3) on which a traveling crawler (2) is mounted, and a threshing unit (8) is provided with a cutting blade and a culm transport mechanism. The feed chain (5) is supplied to the feed chain (5), and the grain stalks pinched and conveyed by the feed chain (5) are threshed by the handling cylinder (6) of the threshing unit (4), and the driving force is applied to the cutting unit (8). The cutting input shaft (25) to be input and the cutting transmission member (3)
2) and a cutting sensor (4) for detecting the driving of the cutting unit (8).
9), provided with a vehicle speed sensor (44) for detecting the speed of travel crawlers (2), and a control circuit for storing the transmission data reaper by crop conditions (46), a select switch (55) for selecting a crop conditions In the combine, when the threshing sensor (50) and the reaping sensor (49) detect the operation of the threshing unit (4) and the reaping unit (8), the input of the vehicle speed sensor (44) and the reaping speed sensor (45) , characterized in that to determine the reaper (8) a rate of change propriety,-out bets reaper (8) speed changeable, and configured to automatically change the grain稈搬feed rate of cutting preparative portion (8) And combine.