JPH0640779B2 - Combine - Google Patents

Description

Description: (a) Industrial field of application The present invention relates to a combine equipped with a threshing device and traveling in farmland, and more particularly to a horizontal slide mechanism for moving a cutting unit in a direction perpendicular to a traveling direction. Regarding combine harvesters.

(b) Conventional technology During harvesting work with a combine, the tracks on the uncut side may step on the vicinity of the plant plant of the crop, and the trampled crop falls over. If the farmland is relatively strong, the crops that have fallen will re-stand after the tracks have passed, but if the farmland is weak, the crops will remain lodged even after the tracks have passed, and the crops that will be cut later Work becomes difficult. For this reason, as shown in FIG. 9, there has been devised a combine equipped with a lateral slide mechanism capable of moving the reaper 23 in the direction of arrow A or B perpendicular to the traveling direction. By moving the mowing section 23 to the position shown by the chain double-dashed line in FIG. 9 by this lateral slide mechanism, the crop 41 of the plant row on which the crawler belt 24 on the uncut side is stepped can also be guided into the mowing section 23. The crop culms can be mowed before being trampled by the tracks 24. In this lateral slide mechanism, a motor M2 is provided in the cutting unit 23, and the pinion gear 2 is attached to the rotation shaft of the motor M2.
5, a rack gear 26 is provided on the main body side, and the pinion gear 25 is meshed with the rack gear 26.
The rotation of moves the reaper 23 in the direction of arrow A or B. In addition, this lateral slide mechanism can be used to control a small amount of direction, and by enabling the lateral slide mechanism in the vicinity of the traveling position and increasing the amount of crop harvested, it is sufficient for the traveling operation. Space can be provided.

(c) Problems to be Solved by the Invention However, when the mowing unit is moved by the lateral slide mechanism, the transport distance from the mowing blade of the mowing unit to the threshing device may change. Between the cutting blade and the threshing device, it is possible to change the sandwiching position of the grain culvert in the transport device, so that the sandwiching position of the grain culm is changed according to the tip position of the crop formed in the cutting unit. There is. This is because even in the case of crops in the same farmland, the culm length is not completely uniform, and the tip position may change due to changes in the transport condition of the culm. This is because the pinching position of the grain culm is changed so that the grain is guided, and the threshing work accuracy is maintained in a good condition. For this purpose, it is necessary to change the holding position at a predetermined timing after detecting the tip in consideration of the conveying distance from the tip detecting position to the threshing device.
However, when the reaper moves laterally and the transport distance changes, there is an error in the timing of changing the grain stalk sandwiching position, making it impossible to change the sandwiching position appropriately with respect to the change in the tip position. was there.

An object of the present invention is to change the timing of the changing operation of the grain culm clamping position according to the amount of lateral movement of the reaper,
An object of the present invention is to provide a combine that can always guide only a part of a grain culm to a threshing device in an appropriate state regardless of a change in transport distance.

(d) Means for solving the problem The combine of the present invention is a tip sensor for detecting the tip position of a crop, and a depth control for changing the grain-culm holding position of the transport distance based on the detection result of the tip sensor. And a horizontal slide mechanism for moving the reaper in a direction perpendicular to the traveling direction, wherein the grain culm in the handling depth control means is adjusted according to the amount of movement of the reaper by the horizontal slide mechanism. It is characterized in that delay time changing means for increasing or decreasing the delay time for changing the holding position is provided.

(e) Operation In the present invention, when the horizontal slide mechanism moves the cutting unit in the horizontal direction, the delay time for changing the grain-culm clamping position in the handling depth control means is increased or decreased according to the amount of movement. The delay time for changing the grain culm holding position in the handling depth control means is the time until the grain culm holding position of the transport device is changed after the tip sensor detects the tip of the crop. It should be set according to the transport distance to the device. The delay time changing means increases or decreases the delay time in accordance with the change of the transport distance due to the lateral movement of the cutting unit. For this reason, the operation of changing the grain-culm clamping position of the transport device is always started at an appropriate timing, and even if the tip position changes while the cutting unit is moved in the lateral direction, the threshing device is always in an appropriate state of the crop. Only the hot part is guided.

(f) Example FIG. 1 is a schematic side view showing an essential part of a combine of the present invention.

The mowing unit 23 guides the front crop to the inside by the feeding claw 28 and the raising claw 29. The cutting unit 23 is provided with a cutting blade 30 below, and cuts the grain culms of the crop from the plant base. The harvested crop is guided to the transport device 1 by the packer 5.
The carrier 1 is provided with a chain 2, and the chain 2 holds the grain culms to guide the crop to the carrier chain 3. The transport chain 3 is located on the side surface of the threshing device 4, and holds the grain culms to transport the ears of the crop to the threshing device 4. The raising claw 29 is provided with tip sensors S1 and S4 at upper and lower two locations. Further, tip sensors S2 and S3 are provided above and below the carrier device 1 with a support member 31 interposed therebetween. The mounting position of the tip sensors S2 and S3 is the tip sensor S1 of the pull-up claw 29.
It is located between S4 and S4.

The tip sensors S2 and S3 are provided facing the covers 52a and 52b by a mounting member 51, as shown in FIG. 5 (A). The mounting member 51 is swingable about its central portion as a fulcrum, and the tip sensors S2 and S3 have only one of the upper cover 52a or the lower cover 52b as shown in FIGS. You can move to a position facing. Depending on the crop variety and crop condition,
In the thresher, there are some cases where the handling depth is too shallow and some are too deep. Therefore, as shown in FIG. 6B, in the crop that is shredded in the threshing device, the tip sensors S2 and S3 are made to face only the upper cover 52a, and the nipping position in the conveying means is set to the deep side. deep.
On the other hand, in the case of deep cropping in the threshing device, the tip sensors S2 and S3 are made to face only the lower cover 52b and the sandwiching position by the transport chain 3 is set to the shallow handling side, as shown in FIG. Keep it. As described above, since both the upper cover 52a for adjusting to the deep handling side and the lower cover 52b for adjusting to the shallow handling side are provided, the sandwiching position of the crop can be accurately adjusted.

Further, the carrier device 1 and the chain 2 are locked to one end of a lever 7 via a link 6 as shown in FIG.
The other end of this lever 7 is fixed to the rotating shaft of the motor M1, and the conveyor M1 and the chain 2 swing in the direction of arrow C or D with the driving side 1a as a fulcrum by the rotation of the motor M1 in the direction of arrow G or H. To do. When the carrier 1 and the chain 2 swing in the direction of arrow C, the holding position of the chain 2 moves to the upper side of the crop, and when the carrier 1 swings in the direction of arrow D, the holding position of the chain 2 moves downward of the crop. Transition. Therefore, if the transport device 1 is swung in the direction of arrow C, the grain culm clamping position in the transport chain 3 changes to the shallow handling side, and if the transport device 1 is swung in the direction of arrow D, the grain culm clamping in the transport device 3 is performed. The position changes to the deep side.

FIG. 3 and FIG. 4 are schematic plan views of the main part of the combine.

The crop cut by the cutting blade 30 as described above is guided to the transport device 1 by the packer 5 rotating in the arrow direction.
In a state in which the lateral slide mechanism shown in FIG. 9 is not operating, as shown in FIG. 3, the tip end sensors S2, S3 convey the conveying distance 1 by the conveying device 1 and guide it to the conveying chain 3. When the cutting unit 23 is moved in the direction of arrow A by the lateral slide mechanism shown in FIG. 9, the carrying device 1 swings in the direction of arrow with the driving side 1a as a fulcrum, and the state shown in FIG. At this time, the position of the tip sensors S2 and S3 does not change with respect to the main body, and after passing the tip sensors S2 and S3, the crop is conveyed by the conveyance distance l2.
Is conveyed and reaches the conveyance chain 3.

FIG. 6 is a block diagram of the combine control unit.

ON data of the tip sensors S1 to S4 is input to the CPU 11 via the I / O interface 14. Also,
ON data of the switch SW1 provided in the control unit (not shown) is input. This switch SW1 instructs the operation of the lateral slide mechanism. The CPU 11 outputs control data to the motor driver 15 according to the processing program written in the ROM 12 in advance. The motor driver 15 drives the motors M1 and M2 according to this control data. The rotation amount of the motor M2 is detected by the volume VR, and the detected data is sent from the A / D converter 16 to the CPU 11
Entered in. RAM1 connected to CPU11
The memory area MA1 of 3 is assigned to a timer T described later. Further, the ROM 12 stores the relationship between the output value of the volume VR shown in FIG. 7 and the measured time t of the timer T. The timer T of the memory area MA1 is provided with the time count t corresponding to the output value of the volume VR.

FIG. 8 is a flowchart showing a part of the processing procedure of the combine controller.

During the mowing work, the CPU 11 causes the tip sensors S1 to S4.
The on / off state of is checked (n1 to n4). CP
U11 first checks the on / off state of the tip sensors S1 and S4 attached to the cutting unit 23, and when the upper tip sensor S1 is on, determines that the length of the crop is too long, and The transport device 1 is swung in the direction of arrow C by rotating M1 in the direction of arrow G. As a result, the sandwiching position of the crop in the transport chain 3 is changed to the shallow handling side. When both of the tip sensors S1 and S4 are off, the motor M1 is rotated in the direction of arrow H, and the transport device 1 is swung in the direction of arrow D (n1 → n2 → n).
6). As a result, the grain culm clamping position in the transport device 3 is changed to the deep handling side.

When the tip sensor S1 is turned off and the tip sensor S4 is turned on, it is determined that the length of the crop is appropriate and the on / off state of the tip sensors S2, S3 is checked as it is.
When the upper tip sensor S2 is turned on, the time t corresponding to the output data of the volume VR is read from the relationship shown in FIG. 7 and given to the timer T assigned to the memory area MA1 (n3 → n7). . After this timer T
Is turned on (n8), and when the timer T times out, the motor M1 is rotated in the direction of arrow G to swing the transport device 1 in the direction of arrow C (n9, n10). Tip sensors S2, S4
7 is turned off, the timed time corresponding to the output data of the volume VR is read from the relationship shown in FIG. 7 and given to the timer T assigned to the memory area MA1 (n3 → n4 → n11). . After this, timer T
Turn on (n12), and after the time is up, the motor M1
Is rotated in the direction of arrow H (n13, n14). As a result, the carrier device 1 swings in the direction of arrow D, and the carrier chain 3
The pinching position of the grain culm in the field changes to the deep side.

In the above, n7 to n9 and n11 to n13 together with the ROM 12 storing the relationship shown in FIG. 7 correspond to the delay time changing means of the present invention. As described above, according to this embodiment, when the upper tip sensor S2 is turned on and it is determined that the tip position is too high, or both the upper and lower tip sensors S2 and S3 are turned off, and the tip position is increased. If it is determined that is too low, first, the timed time t corresponding to the output of the volume VR at that time is read. Volume VR
Detects the rotation amount of the motor M2 and corresponds to the lateral slide amount of the reaper 23. As is clear from FIGS. 3 and 4, the transport distance from the tip sensors S2, S3 to the transport chain 3 becomes shorter as the cutting unit 23 moves in the arrow A direction. On the other hand, the counting time t given to the timer t decreases as the output of the volume VR increases as shown in FIG. Since the output of the volume VR is proportional to the amount of movement of the reaper 23 in the direction of arrow A, as the reaper 23 moves in the direction of arrow A, the time counted by the timer T decreases. The time counted by the timer T is a delay time until the motor M2 is driven after checking the on / off state of the tip sensors S2, S3, and the crop is conveyed from the position of the tip sensors S2, S3 to the conveying chain 3 by the conveying device 1. It is provided in consideration of the time required to be transported. The conveyance speed of the crop during the mowing operation is substantially constant, but the time until the crop reaches the conveyor chain 3 after passing the tip sensors S2, S3 is proportional to the conveyance distance.
Therefore, the tip sensor S is moved by the lateral slide of the cutting unit 23.
2, if the transport distance from S3 to the transport chain 3 changes, the time spent during that time also changes. In this embodiment, the time until the motor M1 is driven can be shortened as the conveyance distance becomes shorter as the movement amount of the reaper 23 in the direction of arrow A increases. Therefore, it is possible to change the delay time of the change of the grain stalk sandwiching position according to the transport distance, and it is possible to always change the grain stalk sandwiching position at an appropriate timing regardless of the lateral position of the reaper 23.

Further, in the present embodiment, the tip sensors S1 and S4 of the raising claw 29 are provided.
Since it is provided, the passing state of the crop can be corrected at the position of the raising claw 29. Further, when the tip positions of the tip sensors S2 and S3 deviate from the proper state, the error amount is calculated by the tip sensor S.
1, S4 can detect, and sensors S1, S4
When the tip position deviates from the proper state in 4, the motor M1 is immediately driven without delay time, so that the grain culm clamping position can be corrected quickly.

(g) Effect of the Invention According to the present invention, the transport distance from the tip sensor to the threshing device is changed by the movement of the mowing unit by the lateral slide mechanism, and when the time involved is changed, the movement amount of the mowing unit is changed. Accordingly, it is possible to increase or decrease the delay time of the operation of changing the grain culm holding position in the handling depth control means. This delay time is set in consideration of the time it takes for the crop that has passed the tip sensor to reach the threshing device.By changing this delay time according to the lateral movement of the cutting unit, Since the delay time can be set according to the above, and the grain culm clamping position can be changed at an appropriate timing at all times, the threshing work accuracy can always be kept good.

[Brief description of drawings]

FIG. 1 is a schematic side view showing a configuration of a main part of a combine according to an embodiment of the present invention, and FIG. 2 is a schematic side view showing an operation of a handling depth control means of the combine. 3 and 4 are schematic plan views of the main part of the combine,
FIGS. 5 (A) to 5 (C) are views showing the mounting state of the tip sensor in the combine, FIG. 6 is a block diagram of the control unit of the combine, and FIG. 7 is a part of the control unit of the combine. FIG. 8 is a diagram showing the relationship between the output of the volume stored in the ROM and the clock time, and FIG. 8 is a flowchart showing the main part of the processing procedure of the control unit of the combine. FIG. 9 is a schematic plan view showing the combine lateral slide mechanism including the embodiment of the present invention. 1 ... Conveyor device, 2 ... Chain, 3 ... Conveyor chain, 4 ... Threshing device 23 ... Mowing unit, S1 to S4 ... Tip sensor.

Claims (1)

[Claims] 1. A tip sensor for detecting the tip position of a crop,
In a combine comprising a handling depth control means for changing a grain culm holding position of a carrier device based on a detection result of a tip sensor, and a lateral slide mechanism for moving a cutting unit in a direction perpendicular to a traveling direction. A combine comprising a delay time changing means for increasing or decreasing a delay time for changing the grain stalk sandwiching position in the handling depth control means according to the amount of movement of the mowing unit by the lateral slide mechanism.