JP2012024038A - Normal combine harvester - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a normal combine harvester for ensuring the durability of a reel speed change part by avoiding an unnecessary relative speed change operation as well as when manually changing speed while securing a stable and lean reel speed change operation for various operation travels by automatically changing the speed of the raking reel.SOLUTION: The normal combine harvester includes: a harvest input shaft (4a) receiving a harvest power from a power source (1) to a harvest part (4); the reel speed change part (6) for steplessly changing speed and transmitting power from the harvest input shaft (4a) to the raking reel (7); and a controller (C) for changing and controlling an output rotation speed of the reel speed change part (6) along a directed target. The controller (C) changes and controls a target rotation speed corresponding to respective vehicle speed division, wherein a vehicle speed range applied for the harvesting travel is classified into a plurality of ranges as the directed target, and stops to change and control the reel speed change part (6) according to the stop of the harvest power of which the harvest input shaft (4a) is received.

Description

  The present invention relates to a normal combine having a cutting reel in a cutting part.

  As shown in Patent Document 1 and Patent Document 2, a normal combine having a cutting reel in a cutting portion is known. This ordinary combine is driven by a cutting input shaft that receives cutting power from a driving unit mounted on the airframe and drives each device including the cutting reel of the cutting unit, and a transmission system extending from the cutting input shaft to the charging reel. It has a reel transmission unit that is installed and transmits gears in a stepless manner, and a control unit that controls the shift of the reel transmission unit, so that manual gear shift control of reel rotation is possible during cutting and rotation according to the traveling vehicle speed. By selecting automatic transmission control that drives the scraping reel at a high speed, stable grain cutting can be performed for various types of cutting operations with different vehicle speeds.

JP 2009-213383 A JP 2007-195557 A

  However, when the traveling vehicle speed fluctuates in the cutting operation, the scraping reel is caused to follow up by the corresponding speed change operation of the reel speed change portion, thereby causing not only instability of rotation due to hunting but also frequent occurrence of the reel speed change portion. Due to the shifting operation, there is a problem that the durability of the reel transmission section is inevitably lowered due to the split pulley type continuously variable transmission mechanism that is frequently used with a simple configuration. There is also a problem that the reel speed changer performs a wasteful corresponding speed change operation in order to adjust the rotational speed to the control target even when the engine is stopped.

  The object of the present invention is to stop the engine during manual driving, including manual gear shifting, while ensuring a stable and efficient reel gear shifting operation for various types of vehicle driving with different speeds by automatic gear shifting of the cutting reel rotation of the cutting part. It is to eliminate the wasteful corresponding speed change operation at the time of the above and to ensure the durability of the reel speed change portion.

  The invention according to claim 1 includes a cutting input shaft (4a) for inputting power transmitted from the driving unit (1) to the cutting unit (4), and the power transmitted from the cutting input shaft (4a). A reel transmission unit (6) that transmits the reel (7) in a stepless manner and a control unit (C) that controls the output rotation speed of the reel transmission unit (6) along the target rotation speed. In the type combine, the control unit (C) performs shift control of the reel transmission unit (6) with the target rotation speed for each vehicle speed section determined by dividing the vehicle speed range used for cutting travel into a plurality of parts, The ordinary combine is characterized in that the shift control of the reel transmission unit (6) is stopped based on the stop of transmission of power input to the cutting input shaft (4a).

  In the ordinary combine equipped with the above-described scraping reel, the cutting power received by the cutting input shaft from the driving portion is transmitted to the cutting devices including the scraping reel through the cutting input shaft, The reel transmission unit is configured to transmit transmission of the scraping reel at an output rotational speed that changes stepwise according to the vehicle speed classification, and to stop the cutting power received by the cutting input shaft. Sometimes shift control is stopped.

In the invention according to claim 2, the transmission stop of the power input to the cutting input shaft (4a) is based on the stop of the driving part (1) by the detection signal of the driving part rotation sensor provided in the driving part (1). The ordinary combine according to claim 1, wherein the ordinary combine is determined.
Stop of the cutting power is detected by the driving part rotation sensor.

According to a third aspect of the present invention, the stop of transmission of the power input to the cutting input shaft (4a) is provided on the cutting / removing mono lever (15) for connecting / disconnecting the transmission of power to the cutting input shaft (4a). The ordinary combine according to claim 1, wherein the judgment is made based on an operation to the stop position of the cutting part (4) by the operation position signal of the lever position sensor.
The stop of the cutting power is detected by the stop operation by the mowing monolever.

According to a fourth aspect of the present invention, the transmission stop of the power input to the cutting input shaft (4a) is a connection / disconnection provided in the cutting clutch (3) for connecting / disconnecting the transmission of power to the cutting input shaft (4a). 2. The ordinary combine according to claim 1, wherein the determination is made based on a transmission cutting operation of the cutting clutch based on a detection signal of the sensor.
Stop of the cutting power is detected by the power cutting operation of the cutting clutch.

  According to the first aspect of the present invention, the power input from the driving portion (1) to the cutting input shaft (4a) is transmitted to the cutting portions including the take-up reel (7) via the cutting input shaft (4a). Then, the take-up reel (7) is transmitted through the reel transmission unit (6), and the reel transmission unit (6) is stepped in accordance with the vehicle speed classification by the control unit (C) that performs reel transmission control. The take-up reel (7) is driven to change speed at an output rotational speed that changes with time, and transmission control is stopped when transmission of power input to the cutting input shaft (4a) is stopped. Accordingly, the reel shift control described above suppresses unstable reel shift operation such as hunting operation due to vehicle speed fluctuations during cutting travel, and sets the vehicle speed classification corresponding to the work classification, thereby enabling the reel transmission section for cutting travel. The speed change operation of (6) can be suppressed to be smaller than that in the case of speed change corresponding to the vehicle speed, and when the transmission of power input to the cutting input shaft (4a) is stopped, the speed change operation is stopped, thereby Since the shift adjusting operation for maintaining the reel rotation corresponding to the above is suppressed, the reel rotation can be stabilized and the durability of the reel transmission unit (6) can be improved.

  In addition to the effect of the first aspect, the invention according to the second aspect can reliably detect the stop of transmission of the power input to the cutting input shaft (4a) by a simple configuration based on the detection signal of the driving portion rotation sensor. .

  In addition to the effect of claim 1, the invention according to claim 3 reliably detects the stop of transmission of the power input to the cutting input shaft (4a) by a simple configuration by a lever position sensor provided on the mowing monolever. Can do.

  In addition to the effect of claim 1, the invention according to claim 4 reliably detects the stop of transmission of power input to the cutting input shaft (4a) by a simple configuration based on the detection signal of the connection / disconnection sensor provided in the cutting clutch. can do.

Transmission system diagram of mowing section System configuration diagram of the rotational speed control of the reel transmission unit Reel rotation control processing procedure (1) Reel rotation control processing procedure (2) Rotational speed characteristic diagram with multiple characteristics Control system configuration diagram related to aircraft turning Flow chart of control by composite switch Flow chart for interlocking control of reel lowering Reel upper / lower limit calculation flowchart Reel abnormality flowchart Side view of ordinary combine Enlarged side view of the cutting part

Embodiments specifically configured based on the above technical idea will be described below with reference to the drawings.
As shown in FIG. 11, the ordinary combine 1 to which the present invention is applied is provided with an up and down reaper cutting portion A having a take-up reel 7 that is rotatable at the front of a machine that can run on a field, and the rear of the machine Is configured to include a threshing unit B that receives the grain harvested by the harvesting unit A and threshs, and a storage unit C that inputs and stores the threshed grain.

  As shown in FIG. 12, the cutting part A supports the cutting input shaft 4a provided at the front end of the machine body so that the cutting input shaft 4a can be moved up and down, and supports the scraping reel 7 on the front end so that the height can be adjusted by the support arm 7a. The cutting blade 5b, the width-adjusting auger 5a, and the feeder chain 5c are arranged in this order at the lower position to perform cutting and post-feeding.

  As shown in FIG. 1, the transmission configuration of the reaping part A is shown in FIG. 1, while the power of various devices is branched from the driving part 1 by the diesel engine or the like to the traveling transmission part 2, and the reaping by the belt tension type or the like. The cutting input shaft 4a that drives each device of the cutting unit A receives the cutting power through the clutch 3 and is transmitted from the cutting input shaft 4a to the width-adjusting auger 5a, the cutting blade 5b, and the feeder chain 5c. It is transmitted to the take-up reel 7 via the reel transmission unit 6 which is steplessly transmitted by a pulley mechanism or the like, and the reel transmission unit 6 can select the predetermined reel shift automatic control together with manual shift of the take-up reel 7 by the shift control. Configure.

  As shown in FIG. 2, the rotation speed control of the reel transmission unit 6 includes a reel rotation speed control means 11 for increasing and decelerating the reel transmission unit 6 in the control unit C as shown in FIG. In addition to a reel shift automatic switch 12 for selecting application of reel shift automatic control for adjusting the reel 7 to a predetermined rotational speed, an acceleration / deceleration switch 13 for manual shift operation, a cutting clutch on / off sensor 14 as a device sensor. The position sensor 15 of the mowing monolever, the reel rotation sensor 16, the engine rotation sensor 17, and the vehicle speed sensor 18 are connected, and the reel rotation speed control means 11 sets the target rotation speed set by the scraping reel 7 according to the conditions. Configure to be

  The specific control of the reel transmission unit 6 by the reel shift automatic control is performed by dividing the vehicle speed range of the cutting travel into a plurality of vehicle speed sections, and setting the output rotation speed that changes stepwise corresponding to each of the speed ranges. As a target, the gear ratio of the reel transmission unit 6 is controlled stepwise in accordance with the vehicle speed classification, and the gear ratio of the reel transmission unit 6 is maintained as it is in response to detection of stoppage of the cutting power received by the cutting input shaft 4a. Stop control.

  Regarding specific processing procedures, the target rotational speed (rpm) corresponding to five vehicle speed levels 1 to 5 is 31 (336), 42 (454), 52 (553), 61 (652), and 74 (790). This example will be described below with reference to the flowchart (part 1) of the reel rotation control in FIG. 3 and the flowchart (part 2) of the reel rotation control in FIG.

  First, as shown in the flowchart (part 1) of the reel rotation control in FIG. 3, when the reel shift automatic control is applied by operating the reel shift automatic switch 12, step 1 of the speed level determination process (hereinafter referred to as “ Abbreviated as "S1".) When the speed level is 1, if the vehicle speed is 0.45 m / s or more, the speed level is set to 2 (S1a, S1b) and the adjacent vehicle speed classification is set. 2 (S2), if the vehicle speed is 0.75 m / s or more, the speed level is 3 (S2a, S2b), and if the vehicle speed is 0.35 m / s or less, the speed level is 1 (S1a , S1b) When the vehicle speed is out of the predetermined vehicle speed range, the vehicle speed is changed to the adjacent vehicle speed section.

  Similarly, when the speed level determination (S3, S4) deviates from the predetermined vehicle speed range corresponding to each case, the speed is changed to the adjacent vehicle speed classification. When the speed level is 5 (S5), the vehicle speed is If it is 1.25 m / s or less, the vehicle speed classification is determined by setting the speed level to 4. Further, when the harvesting clutch is off, the reel drive delay time set (S6, S6a) is performed to secure a delay time necessary for stabilizing the rotational speed of the harvesting part after the harvesting clutch is turned on and after the harvesting drive is started. Prevent damage and overload of each part.

  Subsequently, as shown in the flowchart (part 2) of the reel rotation control in FIG. 4, when the engine 1 is being driven, the cutting clutch 3 is not turned on, the threshing clutch is turned on, and the reel drive delay is not up. In the case of (1), the following processing is passed (S11a to S11e).

  In other cases, when the reel automatic turn-off is turned on, the reel automatic start delay set (S11f, S11g) is performed, and if not applicable, the reel rotation target set (S11h) is performed, which is performed immediately before that. In order to reflect the intention of the operator's manual operation, the reel automatic shift process is entered after waiting for the reel automatic delay up (S11j).

  Next, if the reel rotation corresponds to the determination of the target rotation or more corresponding to the vehicle speed classification (S12), the operation corresponding to the control instruction can be confirmed, that is, the rotation difference exceeds the dead zone width, and the reel deceleration abnormality described later is not detected. Only when the reel rotation is in the range exceeding the lower limit (S12a to S12c), the reel is decelerated (S12d, S12e). Conversely, the reel rotation is determined to be equal to or less than the target rotation corresponding to the vehicle speed category (S13). If applicable, it is within a range where the corresponding operation of the control instruction can be confirmed, that is, within a range (S13a to S13c) where the rotation difference exceeds the dead zone width, is not applicable to the reel deceleration abnormality described later, and the reel rotation does not reach the upper limit value. The reel speed change unit 6 is controlled so as to maintain the target rotation speed by performing reel acceleration (S13d, S13e) only in some cases.

  The reel upper / lower limit value calculation process (S0a) in the initial process of the reel rotation control changes the upper / lower limit values of the reel rotation speed corresponding to the speed ratio range of the reel transmission unit 6 according to the engine speed. Specifically, as shown in the flowchart of FIG. 9, when the engine speed is 500 rpm or less, the upper and lower limits of the reel rotation are 850 and 257 rpm (S41 and S41a), respectively, and in other cases, the lower limit is 99 rpm ( S43, S43a), and the upper limit is 929 rpm (S45, S45a), and the upper and lower limits corresponding to the engine rotation are calculated (S44, S42).

  Further, the reel dial operation (S0b) in the initial process of the reel rotation control is a process of reading a multi-stage shift characteristic defining the reel shift corresponding to the adjustment dial position selected by the operator according to the field conditions. Will be described later.

  Furthermore, as shown in the flowchart of FIG. 10, the reel rotation abnormality determination is performed when the cutting clutch is on, the reel drive delay is up, and the engine is being driven (S51 to S53). If set (S54, S54a) and reel acceleration is in progress (S55), there is no predetermined reel rotation acceleration, and if the acceleration abnormality timer is up (S55a to S55c), reel acceleration abnormality set (S55d) Further, when the reel is decelerating (S56), if there is no predetermined reel rotation deceleration, and if the abnormal timer is up (S56a to S56c), the rotation abnormality is determined by the control process for setting the reel deceleration abnormality (S56d). .

  In the cutting unit 4 that constitutes the above control, the cutting power received by the cutting input shaft 4a from the driving unit 1 is transmitted to each cutting device of the cutting unit 4 including the scraping reel 7 via the cutting input shaft 4a. The take-in reel 7 is transmitted through the reel transmission unit 6, and the reel transmission unit 6 transmits the take-up reel 7 at an output rotational speed corresponding to the vehicle speed classification when the automatic reel shift control is applied. The shift control is stopped when the stop of the cutting power received by the cutting input shaft 4a is detected.

  Therefore, the reel shift automatic control can suppress unstable reel shift operation such as hunting operation due to vehicle speed fluctuation during cutting travel, and also set the vehicle speed division corresponding to the work division, so that In order to maintain the reel rotation corresponding to the vehicle speed classification, the gear shifting operation is stopped and the gear ratio is fixed when the cutting power applied to the cutting input shaft is stopped. As a result, the speed change adjusting operation for suppressing the rotation of the reel can be suppressed, so that the reel rotation can be stabilized and the durability of the reel transmission can be improved.

  Further, the stop of the cutting power is detected based on the operation position signal of the lever operation sensor 15 provided on the cutting / removing mono lever for connecting / disconnecting the cutting power of the cutting unit 4 by stopping the driving unit 1 based on the detection signal of the driving unit rotation sensor 17. Stopping of the harvesting power can be stopped with a simple configuration by determining either by the stop operation of the harvesting unit 4 or by the disconnection of the harvesting clutch by the detection signal of the connection / disconnection sensor provided on the connection / disconnection sensor 3 that connects / disconnects the harvesting power of the harvesting unit 4. It can be detected reliably.

(Migration control)
Next, in the application of the reel shift automatic control described above, when the automatic switch 12 is turned off, and when no operation is performed after the manual switch 13 is accelerated or decelerated, a shift control output is output to maintain the reel rotation speed. As a result, the reel rotation speed can be fixed or manually operated.

Further, the manual switch 13 outputs a corresponding control output only during an acceleration or deceleration operation, and configures a control process for automatically outputting a target rotational speed control output after the operation, thereby temporarily The speed can be increased or decreased.
Further, when the automatic switch 12 is turned off, the reel rotation speed can be fixed or manually operated by stopping the control output to the target rotation speed.
In addition, when the automatic switch 12 is turned off and the speed is increased or decreased by the manual switch 13 and no operation is performed, the shift control output is stopped, so that the reel rotation speed can be fixed or manually operated. .

(Adjustment dial)
By providing an adjustment dial for adjusting the reel rotation speed, the rotation speed characteristics can be adjusted to the reel rotation speed required by the operator according to the field conditions of the work, and in addition to the standard characteristics S The low speed characteristic L and the high speed characteristic H can be selected with a dial. For example, as shown in FIG. ) Can be easily adjusted by setting three types of output rotation speeds that change stepwise in accordance with the vehicle speed classifications, and selecting from these dials.

(Turning control)
Next, a description will be given of the control that associates the raising and lowering operation of the take-up reel of the cutting unit 4 with the airframe turning operation.
As shown in FIG. 6 for a control system configuration diagram relating to the machine body turning, the reel raising / lowering control means 21 for controlling the raising / lowering drive unit 21a of the take-up reel 7 and the turning control for controlling the machine body turning driving device 22a including the sudden turning operation. The means 22 is configured in the control unit C, and a power steering lever 23 for turning operation and a composite switch 24 for raising / lowering the reel and turning suddenly are provided as a plurality of incidental operations at the time of turning of the airframe.

  The composite switch 24 is composed of a single switch that serves both as an auxiliary operation for sudden turning and reel lifting. Specifically, as shown in the flowchart of the accompanying operation control in FIG. When the amount of operation for turning the aircraft by operation is more than a predetermined amount to the left from the neutral position (S23a, S23b), the left sudden turn operation is controlled (S23c), and the operation amount to the right is more than a predetermined amount. (S24a, S24b), the control of the right turn operation is performed (S24c), and if the operation amount of the power steering lever is less than the predetermined value, the reel is lowered (S25a to S25c) or the reel is raised (S26a). To S26c).

  By providing the above control, the composite switch 24 functions as a turning force up switch. Therefore, the arrangement of the conventional reel up / down switch attached to the main shift lever and the quick turning switch for the foot operation by the pedal is more sensitive to turning operation. This makes it easy to understand and can also reduce the number of parts in combination with two incidental operations.

  Further, when interlocking the lowering of the reel, as shown in the flowchart of FIG. 8, the composite switch 24 is turned on when the left / right operation of the power steering lever 23 is greater than or equal to the predetermined control following the sudden turning operation control as described above (S31). ) On the condition, the reel lowering (S32a, S32b) is added, so that the reel lowering during normal turning can be performed at the time of sudden turning.

  Next, when the composite switch 24 is turned off within a predetermined time, only the reel is lifted or lowered, and when the on operation is continued for a predetermined time or more, the sudden turning control output is simultaneously performed, so that only the reel lifting control is performed. If you want to use, you can do it with a one-touch operation.

  Further, in the case where the composite switch 24 is turned on when the left / right operation of the power steering lever 23 is greater than or equal to a predetermined value, even if the reel 7 is already in the lowered position, the re-raised output is restricted, thereby Spills can be prevented.

  Further, when the cutting clutch 3 is “OFF” or the cutting operation switch of the cutting clutch 3 is “OFF”, the composite switch 24 is unconditionally used as a quick turn switch to stop the raising / lowering control of the take-up reel 7. The composite switch 24 can be configured as a turning force up switch at a position that is intuitively understandable.

1 engine (motor section)
DESCRIPTION OF SYMBOLS 2 Continuously variable drive transmission part 3 Cutting clutch 4 Cutting part 4a Cutting input shaft 6 Reel transmission part 7 Crake reel 11 Reel rotational speed control means 12 Reel automatic shift switch 13 Increase / deceleration switch (manual switch)
14 Mowing clutch (on / off sensor)
15 Mowing mono lever (position sensor)
Reference Signs List 16 reel rotation sensor 17 prime mover rotation sensor 18 vehicle speed sensor 21 reel lift control means 21a lift drive section 22 swing control means 22a swing drive equipment 23 power steering lever 24 composite switch C control section

Claims (4)

The cutting input shaft (4a) for inputting the power transmitted from the driving unit (1) to the cutting unit (4) and the scraping reel (7) by the power transmitted from the cutting input shaft (4a) steplessly. In a normal combine that includes a reel transmission unit (6) that performs transmission transmission, and a control unit (C) that controls the output rotation speed of the reel transmission unit (6) along a target rotation speed.
The control unit (C) performs shift control of the reel transmission unit (6) with a target rotational speed for each vehicle speed section determined by dividing a plurality of vehicle speed ranges used for cutting travel, and the cutting input shaft ( 4a) A general combine that is characterized in that the shift control of the reel transmission unit (6) is stopped based on the stop of transmission of power input to 4a).   The transmission stop of the cutting power input to the cutting input shaft (4a) is determined based on the stopping of the driving part (1) by the detection signal of the driving part rotation sensor provided in the driving part (1). The ordinary combine according to claim 1 characterized by the above-mentioned.   The transmission stop of the cutting power input to the cutting input shaft (4a) is the operating position of the lever position sensor provided on the cutting / removing mono lever (15) for connecting / disconnecting the transmission of power to the cutting input shaft (4a). 2. The ordinary combine according to claim 1, wherein a determination is made based on an operation of the cutting part (4) to a stop position by a signal.   The stop of transmission of the cutting power input to the cutting input shaft (4a) is caused by the detection of the connection / disconnection sensor provided in the cutting clutch (3) for connecting / disconnecting transmission of power to the cutting input shaft (4a). 2. The ordinary combine according to claim 1, wherein the determination is made based on the transmission cutting operation.

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