JP3310542B2 - Combine handling depth control device - 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 depth control device and, more particularly, to prevent the occurrence of unhandled portions when cutting one more than the standard number of cutting lines. About technology.

[0002]

2. Description of the Related Art For example, as shown in Japanese Unexamined Patent Publication No. Hei 6-62608, even a model for two-row cutting can combine three-row cutting for middle split cutting, etc. There is known a combine configured to perform the standard cutting number and one more than the standard cutting number plus one cutting.

[0003]

Problems to be Solved by the Invention
As described in the above publication, when the depth control for maintaining an appropriate depth by the vertical movement of the vertical conveyance device based on the detection of the tip position by the pair of tip detection sensors is executed in the combine, a plus one is obtained. Sometimes left unhandled during the mowing. That is, basically, the reaping unit is 2
Because it is for cutting, three-cutting causes the culm of the end streak (especially the streak-side streak) to be slightly forcibly brought to the center and vertically conveyed. As shown in FIG. The left and right grain culms are more likely to be conveyed in a posture closer to the stock than the central row culm.

However, the distance between the pair of sensors is for sensing the position of the tip of the tip, and is set according to the condition that the standard tip of the grain culm of the central row has a suitable handling depth. Therefore, when the cereal culm of the end streak and the standard cereal culm of the central streak, which are slightly leaning toward the stock side, are continuously conveyed, as shown by the imaginary line in FIG. As if a cereal culm with a long tip portion is being conveyed, the stalk of the end streak is left untreated at the base of the culm [see FIG. 7 (a)]. Therefore, an object of the present invention is to realize a combine that can thresh so as not to cause an unhandled portion at the time of plus one-row cutting such as middle cutting.

[0005]

[Means for Solving the Problems]

(Structure) The first invention is capable of driving and vertically moving a conveying device for holding a culm cut by a cutting unit and conveying the culm to a starting end of a feed chain so that a holding position of the cut culm can be changed in the direction of the culm body. Operating means and the tip position detecting means so as to maintain the target handling depth based on the information of the tip position detecting means for detecting the tip position of the grain culm in the grain stalk transport path. A combine depth control device comprising control means for linking
In addition, three weeds for weeding the culm introduced into the cutting part
A first weeding tool, which is located on the left end side of the reaper.
With the second weeding tool located on the right side, the first process for introducing stalks
A road, and the second weeder and the reaper.
The second path for introducing cereal stem with the third weeding tool located on the right end side
And the width of the first and second paths of planted grain culm introduction
Introduce planted cereal culm for one line to each of 1st route and 2nd route
It is possible, and one planted culm is introduced into the first route.
Cut and harvested even when two sets of planted grain culms have been introduced into the second route
The width is set to an acceptable path width, and the plant introduced into the second path is set.
Detects whether the number of standing culms is one or two
Number detecting means, and the number detecting means detects the introduction of two articles.
In the case where the detection is performed, a correction unit that links the number-of-rows detection unit and the control unit is provided so as to correct the target depth to the deep side.

According to the second invention, the time required for the vertical transport device to actually move up and down from the detection operation of the tip position detection means to the correction means is treated as compared with the case where the control for reducing the handling depth is performed. It is characterized in that the control when the depth is increased is made shorter.

In a third aspect of the present invention, the correcting means is configured such that the moving speed of the vertical transport device in the direction of increasing the handling depth is faster than the moving speed of the vertical transport device in the direction of decreasing the handling depth. It is characterized by having been done.

A fourth aspect of the present invention is an operation in which a vertical conveying device for nipping and holding a cut culm and transporting the cut culm to the start end of the feed chain can be driven up and down so that the holding position of the cut culm can be changed in the culm body direction. Means, three tip position detecting means for detecting the tip position of the grain culm in the transporting route of the harvested grain culm at three places along the culm body direction, and the number of cut target strips is standard or 1 A number-of-stalks detecting means capable of detecting whether there are a large number of streaks, and in a case where the number of cutting target streaks is a standard, information of two spike-side position detecting means of the stock head side among the three spike-position detecting means is included in the information. In the case where the target handling depth is maintained on the basis of the above and the number of the cutting target streaks is one more than the standard number, the information is obtained based on the information of the two ear tip position detecting means of the three tip position detecting means. Operating means and 3 so as to maintain the target
The present invention is characterized in that it comprises a number-of-rows corresponding control means for linking the individual tip position detecting means and the number-of-rows detecting means.

According to the configuration of claim 1, the target handling depth is corrected to the deep side by the correcting means at the time of the plus one cutting, so that the grain culm in the state of the ear tip longer than the standard is threshed as it is. It is controlled not to be transported to the device, but to be in a deep handling state that matches the short culm state. Then, the tip of the tip goes deeper into the handling cylinder than usual [Fig.
Reference] The tip root portion is also handled, so that unhandled portions are prevented from occurring. In this case, before the correction control is activated, the one with a good handling depth tends to be deeply handled after the correction control is activated. This is more desirable than leaving unhandled data.

The head position detecting means is provided on the grain conveying side farther than the end of the vertically moving vertical moving device, such as a portion in the middle of conveying by the vertical conveying device and a raising device portion. There is a response delay before moving up and down. Therefore, according to the second aspect of the present invention, the response delay is reduced by making the control time different from the case where the handling depth is made deeper than the case where the handling depth is made shallow. , The overall control tends to be deeply handled,
It is possible to suppress the occurrence of unhandled items. And
For that purpose, it is sufficient to modify the control software to the extent of change.

According to the third aspect of the present invention, the vertical transport device is moved up and down so that the moving speed in the direction of increasing the handling depth is faster than the moving speed in the direction of decreasing the handling depth. By making a difference in the response delay by changing the driving speed,
The overall control is to correct the tendency to handle deeply and suppress the unhandled state. In this case, it is only necessary to modify the drive system such as changing the number of rotations of the electric motor.

According to the structure of claim 4, as shown in FIG. 6, the tip position is detected by the lower two sensors Z1 and Z2 in the standard cutting, and the upper two in the plus one cutting when the tip becomes longer. The tip positions are detected by the sensors Z2 and Z3. Therefore, as shown in FIG. 7 (a), if the tip of the tip is inserted to the angle a of the handling chamber 17 in the standard cutting, the vertical transport device moves downward in the plus one-row cutting, and the grain culm holding position is changed. As shown in FIG. 7B, the tip end position of the tip is controlled to the deep handling side where the tip end is inserted up to the angle b of the handling chamber 17, so that the untreated portion of the tip end side is left. It can be eliminated. In this case, it is only necessary to change the set of the pair of tip position detecting means, and it is not necessary to change the control software or the drive system.

[0013] [Effect] In the combine described in any one of claims 1 to 3, (a) due to the function of the correction control means, the unhandled state at the time of plus one-row cutting work such as middle split cutting is suppressed or eliminated, It was possible to provide a handling depth control device capable of improving the grain recovery rate.

In the combine according to the second aspect, the above-mentioned effect (a) can be obtained by a relatively simple correction control means such as changing the control software.

In the combine according to the third aspect, the above effect (a) can be obtained by a relatively simple correction control means for changing the speed of the drive system.

In the combine according to the fourth aspect, there is no need to change the control software or the transmission system, and a simple remodeling with only three tip position detecting means makes it possible to perform plus one-row cutting such as middle cutting. It is possible to provide a handling depth control device capable of suppressing or eliminating the unhandled state at the time and improving the grain recovery rate.

[0017]

DESCRIPTION OF THE PREFERRED EMBODIMENTS Embodiments of the present invention will be described below.
The two-row mowing self-removable combine will be described with reference to the drawings. 1 and 2 show a side view and a plan view, respectively, of the front part of the combine, where A is a mowing part and B is a traveling machine. The cutting unit A includes three weeding tools 1A, 1B, 1C, a raising device 2,
It includes a reaper 3, a horizontal transport device 4, a vertical transport device 5, and the like. The traveling body B includes a crawler traveling device 6, a threshing device 7, a feed chain 8, a control unit 9, and the like.

The distance between the second weed 1B and the third weed 1C is wider than the distance between the first weed 1A and the second weed 1B, and the grain culm for two rows is reduced. It can be introduced. The vertical transport device 5 for transporting the cereal culm from the horizontal transport device 4 to the start end of the feed chain 8 includes a nipping transport mechanism 5A on the stock side and a locking transport mechanism 5B on the tip side. In this combine, the handling depth in the threshing device 7 is automatically maintained in an appropriate state so as to eliminate unreserved handling due to shallow handling and increase in generation of broken straw due to deep handling. In order to perform the intended harvesting work without pushing down the grain stalk with a weeding implement, the steering depth control and the steering control to automatically steer the traveling aircraft are performed, Next, a description will be given.

The steering control detects the position of the row of cereal stems in the left-right direction as the body progresses, and moves the left and right crawler traveling devices so that the row of cereal stems becomes the desired left-right position suitable for mowing work. 6 is operated by operating the side clutches 20 and 21 for intermittently driving the power to the vehicle 6.

As shown in FIG. 2, the central second weeding tool 1B
A first steering sensor S1 for detecting the position of a cereal culm on the first path W1 for introducing culm between the first and second weeding implements 1A and 1B on the left side of the supporting rod 10B; A second steering sensor S2 for detecting the position of the cereal culm in the second path W2 for introducing the cereal culm between the third weeding implement 1C and the second weeding implement 1B,
The supporting rod 10C of the right third weeding tool 1C has a second path W
A third steering sensor S3 for detecting the position of the second culm is provided. The left support rod 10A is not provided with a steering sensor.

Each of the steering sensors S1 to S3 is constituted by a sensor bar 11 swinging rearward in contact with a row of planted grain culms and a sensor bar 11 attached to a potentiometer 12. That is, so that the detection value of the potentiometer 12 is within a predetermined range, in other words, the position of the grain culm row is automatically steered to a state in which the position is at a predetermined distance from the weeding implement 1B or 1C. Controlled. Specifically, as shown in FIG. 3, the solenoid valve 1 of the left or right steering cylinder 18, 19 is used.
3 is switched, and the left or right side clutch 20, 2 is operated.
1 is turned on and off to steer the aircraft.

At the time of row cutting (during double-row cutting), the second
The weeding tool 1B is run with the two rows of grain culms positioned substantially at the center, and a state where one row of grain culm is introduced into each of the routes W1 and W2 (the solid line culm in FIG. 2). Therefore, based on the two detection information of the first and second steering sensors S1, S2,
The state in which the cereal stems on both sides of the second weeding tool 1B are in contact with both sensor bars 11, 11 at equal intervals from the second weeding tool 1B is defined as an appropriate steering state. Then, at the time of middle cutting or side cutting (plus one-row cutting), a state in which two rows of grain culms are introduced into the second path W2 and one row of grain culms is introduced into the first path W1. (Grain culm in the imaginary line in FIG. 2), and the culm on the most cut side (right side) passes right beside the third weeding tool 1C. Therefore, in this case, based on the detection information of the third steering sensor S3, the state where the grain culm is positioned at a predetermined interval from the third temporary weeding tool 1C on the most temporary side is determined as the appropriate steering state, and the appropriate steering state is set. It is controlled to maintain the orientation state.

As shown in FIG. 1 and FIG.
The vertical conveying device 5 is supported so as to be able to swing up and down around a left-right fulcrum P provided at the rear so that the holding position of the grain culm conveyed by the vertical conveying device 5 can be changed in the direction of the culm body. In addition to being configured to be able to move up and down at 14,
Detecting the tip position of cereal culm in the culm transport route 2
A known tip sensor (an example of tip position detection means) is controlled to maintain the target handling depth based on information of Z1 and Z2.

That is, the tip sensors Z1,
Z2, the state in which the lower first ear sensor Z1 is detected and the upper second ear sensor Z2 is not detected is set to an appropriate handling depth. When the both tip sensors Z1 and Z2 are above the second tip sensor Z2 and the two tip sensors Z1 and Z2 detect and operate, the gears are deeply handled. Therefore, the geared motor 14 is driven to vertically swing the vertical conveying device 5. When the tip position is located below the first tip sensor Z1 and when none of the tip sensors Z1 and Z2 performs the detection operation, the tipping operation is performed in a shallow manner. Move.

In this combine, the number of rows detecting means C capable of detecting whether the number of rows to be harvested is standard (two-row trimming) or one more than that plus one-row trimming (three-row trimming)
And a correction means 16 for linking the number-of-rows detection means C and the control means 15 so as to correct the target handling depth to a deeper side in the case of plus one-row cutting.

That is, in the case of plus single cutting such as middle cutting, as shown in FIG. 5, the horizontal conveying device 4 uses three horizontal rows of planted grain culms at the left and right ends, particularly in the traveling direction. Since the right-hand strip is harvested and transported in a state of being largely shifted to the left and right, in the vertical transport apparatus 5, the grain culm of the end row is closer to the base of the stock compared to the standard transport state of the center row. The paper is continuously transported in a shifted state. Therefore, it is as if a grain culm with a long spike length is being conveyed, and even in a normal control operation state, as shown in FIG. It is likely to be short, and it will be in a shallow-handling state in which unmanagement occurs at the end of the granule portion at the base of the stock.

In view of this, as shown in FIG. 4, a third head sensor Z3 is provided above the second head sensor Z2 at an interval from the second head sensor Z2. Based on the detection information of certain first and second tip sensors Z1 and Z2, the target handling depth is maintained, and in the case of three-row cutting, the second and second tip positions detecting means for two tip sides are used. 3
The geared motor 14, three tip position detecting means Z1 to Z3, and a third steering sensor S3 which is a strip number detecting means so as to maintain the target handling depth based on the detection information of the tip sensors Z2 and Z3. Are linked by the correction means 16. In this control device, the control means 15 and the correction means 16 constitute a number-of-numbers control means D.

That is, as described above, the third steering sensor S3 does not operate at the time of double-row cutting, but the third steering sensor S3 operates at the time of triple-cutting, so that the third steering sensor S3 operates. Then, the correcting means 16 also operates. When the third steering sensor S3 does not operate, the correcting means 16 also does not operate. The steering sensors S1, S2 and S3 constitute the number-of-rows detecting means C. Therefore, when the correcting means 16 is operated during the three-row cutting, the vertical transport device 5 is swung downward and controlled to the deep handling side so that the tip of the tip is located between the second and third tip sensors Z2 and Z3. Therefore, as shown in FIG. 7B, the insertion angle into the handling chamber 17 is changed from a to b so that the handle is deeply handled, and the unhandled end of the granulated portion at the stock side end is eliminated. Because

[Another Embodiment] A case in which the correction means 16 controls the time required from the detection operation of the tip sensors Z1 and Z2 until the vertical transport device 5 actually moves up and down to reduce the handling depth. The configuration in which the control for increasing the handling depth is performed may be shorter than the case where the control for increasing the handling depth is performed. As an example, as shown in FIG. 8, in the control on the shallow side, the geared motor 1 based on the detection information is used.
4 is delayed by the timer 22, and in the control on the deep handling side, the geared motor 14 is immediately activated based on the detection information without passing through the timer 22.

The correcting means 16 may be configured such that the moving speed of the vertical transport device 5 in the direction of increasing the handling depth is faster than the moving speed of the vertical transport device 5 in the direction of decreasing the handling depth. good. That is, as shown in FIG. 9, the control means 15 and the geared motor 14 are connected via the rotation speed adjusting means 23, and the rotation speed of the geared motor 14 on the deep handling side is lower than the rotation speed of the geared motor 14 in the control on the shallow handling side. Geared motor 1 in control
By increasing the number of rotations of 4, the descending speed of the vertical transport device 5 is made faster than the ascending speed.

In any of the above correction means 16,
The target handling depth shifts to the deep handling side as a whole control, and the remaining unloading at the time of plus one-row cutting is suppressed or eliminated.

A plurality of tip sensors are raised and arranged vertically on the casing of the apparatus 2 to serve as tip position detecting means for detecting the length of the grain culm in the planted state. The control of the present invention may be added to a feed-forward type depth control in which a potentiometer is provided at P and the vertical transport device 5 swings up and down to the target angle based on the culm length detection information.

[Brief description of the drawings]

FIG. 1 is a side view of the front of the combine.

FIG. 2 is a plan view of the front of the combine.

FIG. 3 is a control block diagram relating to handling depth control and steering control;

FIG. 4 is a front view showing a tip detecting structure;

FIG. 5 is a front view showing a state in which a grain stalk is raised at the time of plus one-row cutting.

FIG. 6 is an operation diagram showing a cereal stalk transport state during plus single-row cutting.

FIG. 7 is a front view showing a state where a cereal stalk is inserted into a handling room;

FIG. 8 is a control block diagram of the first alternative embodiment.

FIG. 9 is a control block diagram of a second alternative embodiment.

[Explanation of symbols]

 Reference Signs List 5 vertical conveying device 8 feed chain 14 operating means 15 control means 16 correction means C number of lines detecting means D number of lines corresponding control means Z, Z1, Z2, Z3 Ear position detecting means

Claims (4)

(57) [Claims] An operating means capable of driving and vertically moving a conveying device for holding a culm harvested by a reaping unit and transporting the culm to a starting end of a feed chain so that a gripping position of the harvested culm can be changed in the direction of the culm body. And operating the operating means and the tip position detecting means so as to maintain the target handling depth based on the information of the tip position detecting means for detecting the tip position of the grain culm in the conveying path of the grain culm. A combine depth control device, comprising: a cutting unit for weeding grain stalks introduced into the cutting unit.
A third weeding tool, which is located on the left end side of the mowing part;
Grain stalk introduction with the first weeding tool and the second weeding tool located to the right of it
And a second path for the second herb
With the 3rd weeding tool located on the right side of the reaper, for introducing culm
Of the first and second pathways,
The width of the road is set on each of the first and second paths for one line.
In addition to being able to introduce cereals, planting one line in the first route
Introduced cereal culm and introduced two sets of planted cereal culm in the second route
Set the path width so that it can be cut even in the state, and lead to the second path.
Whether the number of planted grain culms inserted is one or two
The number of lines detecting means, wherein the number of lines detecting means is two
An apparatus for controlling the depth of a combine, comprising a correcting means for linking the number-of-rows detecting means and the control means so as to correct the target depth to a deeper side when the introduction of the minute is detected . 2. The correction device according to claim 1, wherein a time required for the vertical transport device to move up and down from the detection operation of the tip position detection device is actually smaller than a case where a control for reducing the depth is performed. The combine depth control device according to claim 1, wherein a case where the control for increasing the depth is performed is shortened. 3. The correction device according to claim 1, wherein the moving speed of the vertical transport device in the direction of increasing the handling depth is higher than the moving speed of the vertical transport device in the direction of decreasing the handling depth. The combine depth control device according to claim 1, wherein: 4. An operating means capable of driving a vertical transport device for nipping and holding a cut culm and transporting the cut culm to the starting end of the feed chain, so that a clamping position of the cut culm can be changed in the culm direction. Three tip position detecting means for detecting the tip position of a grain culm in a conveying route of a cut grain culm at three places along the culm direction, and whether the number of cut target strips is standard or one more than that Means for detecting the number of rows to be harvested, and when the number of rows to be harvested is standard, based on the information of the two ear tip position detecting means of the stock head side among the three ear tip position detecting means. When the target handling depth is maintained and the number of cutting target streaks is one more than the standard number, based on the information of the two spike position detecting means of the three spike position detecting means among the three spike position detecting means. The operating means and the three ear tips are maintained so as to maintain a target handling depth. Threshing depth control device are provided with a number of threads handling control means for linking the detecting means the number of threads detecting means combine.