JP2002027820A - Device for controlling threshing depth in combine harvester or the like - Google Patents

Abstract

PROBLEM TO BE SOLVED: To make a limit position of a region for regulating threshing depth of a grain culm fed to a threshing apparatus clear in a combine harvester, and further to prevent the failure of threshing caused by the sudden change to a shallow threshing side, from frequently happening. SOLUTION: This device for controlling the threshing depth is characterized in that a threshing position-detecting means 4 for setting the limit position of each regulating action of the threshing depth-controlling means 2 to the deep threshing side or to the shallow threshing side is installed in a combine harvester or the like for feeding grain culms reaped by a reaping device 1, and fed to the threshing device 3 from a joining part of plurality of grain culm-conveying lines while regulating the threshing depth by a threshing depth-regulating means 2, and further characterized in that the controlling operation speed to the shallow threshing side is regulated so as to be slower than that to the deep threshing side, and when the detected value of the threshing position-detecting means 4 has not been changed for a prescribed time or more by a successive operation to the deep threshing side in a regulating mode for regulating the detected value of the threshing position detecting means 4, the value obtained by reducing a prescribed value from the detected value is determined so as to be the limit position to the deep threshing side.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a handling depth control device for a combine or the like, and belongs to the field of controlling the handling depth when feeding grain stalks cut by a cutting device to a threshing device. .

[0002]

2. Description of the Related Art At the time of work in a combine or the like, a culm harvested by a reaper is transported and supplied to a threshing apparatus for threshing work. In general, the handling depth is detected, and the detected value is used to adjust and control the handling depth adjusting means to have an appropriate handling depth according to the condition of the transported culm.

[0003]

However, in a reaping apparatus in which a plurality of harvested grain culm conveying rows are joined together, when the handling depth is adjusted, the deep handling side in the adjustment area of the handling depth adjusting means is adjusted. In addition, since the limit position of each adjusting action to the shallow handling side is not clear, the handling depth position is disturbed and the threshing performance is hindered by the handling depth position being too deep, When the adjustment to the side is performed, there is a risk that the unhandled state frequently occurs due to the continuation of the shallowly handled state.

[0004]

According to the first aspect of the present invention, the handling depth is adjusted by the handling depth adjusting means 2 from the confluence of the plurality of grain culm conveying rows cut by the cutting device 1 to the threshing device 3. In a combine or the like to be supplied, a handling depth position detecting means 4 for setting a limit position of each adjusting action to the deep handling side or the shallow handling side of the handling depth adjusting means 2 is provided, Is set to be lower than the adjustment operation speed to the deep handling side.

According to a second aspect of the present invention, there is provided a combine or the like which adjusts the handling depth from the confluence of a plurality of grain culm conveying rows cut by the cutting device 1 by the handling depth adjusting means 2 and supplies the handling depth to the threshing device 3. There is provided a handling depth position detecting means 4 for setting a limit position of each adjusting action to the deep handling side or the shallow handling side of the handling depth adjusting means 2 and an adjustment for adjusting a detection value of the detecting means 4. In the mode, when the detection value of the detection means 4 does not change for a predetermined time or more due to the continuous action on the deep handling side, a value obtained by subtracting a predetermined amount from this detection value is set as the limit position to the deep handling side. A configuration of a handling depth control device according to claim 1 is provided.

[0006]

According to the first aspect of the present invention, during the harvesting operation of a combine or the like, the grain culm conveying row in which a plurality of uncut grain culms have been cut by the cutting device 1 is joined in, for example, a Y-shape. From the junction, an appropriate handling depth is obtained by each adjusting action to the deep handling side or the shallow handling side by the handling depth adjusting means 2 based on the detection value of the handling depth detecting means arranged at an appropriate position on this transport path. However, by setting the limit position of the depth / shallow adjustment operation of the handling depth by the handling depth position detecting means 4,
It is possible to accurately detect the adjustment position at the time of controlling the handling depth, and to make the adjusting action speed to the shallow handling side slower than the adjusting action speed to the deep handling side, so that the continuous shallow The handling state can be avoided.

According to the second aspect of the present invention,
At the time of harvesting work such as combine harvesting, a culm conveying row in which a plurality of uncut culms are cut by the reaper 1 is disposed at an appropriate position on the conveying path from a merging portion where the culm confluence is joined in, for example, a Y-shape. Depending on the value detected by the depth detecting means, the appropriate depth can be set by the respective adjusting actions to the deep handling side or the shallow handling side by the handling depth adjusting means 2. In the detection value adjustment mode of the handling depth position detecting means 4 for setting the limit position, the detection value of the detecting means 4 is kept for a predetermined time (for example, 3 seconds) in a state where the handling depth is continuously applied to the deep handling side.
If there is no change above, a value obtained by subtracting a predetermined amount (for example, the mechanical lock avoidance amount) from the detected value is set as the limit position toward the deep handling side, and the handling depth is controlled by this set value.

[0008]

According to the first aspect of the present invention, as described above,
In the harvesting operation of the combine, etc., the handling depth of the grain stalks to the threshing device 3 in the grain stalk transporting path of the reaper 1 that joins the stalk transporting rows in which the plurality of uncut stalks have been trimmed into a Y-shape at the time of harvesting. By setting the limit position of each adjusting action to the deep handling side or the shallow handling side by detection by the handling depth position detecting means 4,
Since the adjustment position at the time of the handling depth control can be accurately detected, the threshing performance is not hindered by the deep handling due to the disorder of the handling depth position as in the related art. The accuracy of the depth control can be improved, and the adjustment operation speed to the shallower side is made slower than the adjustment operation speed to the deeper side. However, unlike the related art, it is possible to prevent a phenomenon in which unhandled portions frequently occur due to the continuation of the shallowly handled state.

According to the second aspect of the present invention, as described above, during the harvesting operation of a combine or the like, the grain culm transport of the reaper 1 of the reaper 1 that joins the grain culm transport row in which a plurality of uncut grain culms are harvested into a Y-shape. In the route, in the detection value adjustment mode of the handling depth position detecting means 4 for setting the limit position of each adjustment action to the deep handling side or the shallow handling side by detecting the handling depth of the grain stalk to the threshing device 3 If the detection value of the detection means 4 does not change for a predetermined time or more due to the continuous operation of the processing depth toward the deep processing side, a value obtained by subtracting a predetermined amount from this detection value is regarded as the limit position to the deep processing side. As a result, unlike the related art, an external device such as a microcomputer checker for adjustment is not required, and at the time of the adjustment, labor for adjusting operation of the handling depth adjusting means 2 and getting on and off for position confirmation is omitted. It is very easy and can reduce the number of man-hours Kill.

[0010]

DESCRIPTION OF THE PREFERRED EMBODIMENTS Embodiments of the present invention will be described below with reference to the accompanying drawings. FIG. 12 shows the entire structure of the combine, in which a traveling device 8 having a pair of left and right traveling crawlers 7 traveling on the soil surface is disposed below the chassis 6, and the traveling chain 8 is held on the chassis 6 by a feed chain 9. A grain tank 10 for threshing the culm fed and supplied, selectively collecting the threshed grains, and temporarily storing the grains, and a flesh auger 11 for discharging the grains stored in the tank 10 to the outside of the machine. Is mounted.

In front of the threshing device 3, a weeding body 12 for weeding uncut culms from the front side, a raising part 13 for causing weeded culms, and a cutting blade part 14 for cutting the raised culms.
The mowing apparatus 1 having the adjusting and transporting portion 15 and the like, which rakes the cut culm and adjusts the handling depth to supply the feed chain 9 to the feed chain 9, can be moved up and down on the soil surface by a hydraulically driven telescopic cylinder 16. It is configured to be suspended from the front end of the chassis 6.

An operating device 18 for controlling the operation of the combiner is provided on one side of the reaper 1, and an operating seat 19 for this operation.
The Glen tank 1 is provided behind the operation seat 19.
0 and the engine 20 is mounted on the lower side, and a cabin 21 that covers the operating device 18 and the operating seat 19 is provided. The traveling device 8, the threshing device 3, the reaper 1, the operating device 18, the engine 20, the cabin 21, and the like constitute a combine vehicle body 22.

As shown in FIGS. 9 and 10, the mowing device 1 supports a mowing input case 25 in a vertically rotatable manner on a mowing stand 24 fixed to an upper end portion of a traveling transmission case 23. An input vertical case 26 in the form of a pipe extending downward from 25 is joined to a position near the center of a lower horizontal transmission case 27 provided over the entire width of the lower part of the mowing device 1.

The intermediate vertical case 28 is joined and extended from the vicinity of the left end of the lower horizontal transmission case 27 obliquely upward and forward, and the respective cases 26, 27, 28 are separated from the cutting input shaft 29 supported by the cutting input case 25. Power is transmitted via The intermediate vertical case 28 is joined to an upper horizontal transmission case 30 provided over the entire width of the mowing device 1 and a plurality of lug drive cases projecting downward from the upper horizontal transmission case 30 at appropriate intervals. Via 31, a raising chain 13 b to which a raising lug 13 a of the raising section 13 for raising uncut kernels is driven is configured to be drivable.

A pair of left, middle, and right rag belts 32a, 32b, and 32c for rubbing the stem side of the culm cut behind each of the weeds 12 and the rag belt 32
Scraped star wheels 33a, 33b, 33c for further squeezing and holding the grain stalks swept by the group are arranged. From the group of the swept star wheels 33, the stock transfer chains 34a, From the confluence of 34b, 34c, a handling depth adjusting chain 2 as handling depth adjusting means 2 for adjusting the handling depth of the transported grain culm to deep / shallow is taken over.

The handling depth adjusting chain 2 is disposed so as to be able to swing up and down by a handling depth adjusting motor 35 with its front end as a fulcrum. In addition, left, middle, and right ear tip transport lugs 36a, 36 for transporting the tip edges corresponding to the root side of the grain stem, respectively.
b and 36c are arranged to constitute the adjusting and conveying section 15.

The cutting blade section 14 for cutting uncut culms is divided into right and left parts and arranged over the entire width of the cutting device 1. The left and right cutting blade parts 14 are respectively attached to both ends of the lower lateral transmission case 27. The left and right reciprocating drive is made possible by the left and right crank mechanisms supported by the bearing. Weeding rod 12a supporting the left weeding body 12
On the rear side, a cutting height sensor 37 that emits ultrasonic waves, receives reflected waves, and detects the cutting height of the cutting culm is attached to the soil surface, and the weeding rod 12a and the right weeding rod 12b are mounted. Left and right direction sensors 38 for supporting a detection rod having a fixed backward angle so as to be able to rotate back and forth are attached and arranged on the front side.

As shown in FIG. 11, left and right grain culm sensors 39 for detecting the presence or absence of a grain culm at a position near the front ends of the left and right scraping lug belts 32a and 32c of the adjusting and conveying section 15.
And a culm length sensor 40 for detecting the length / shortness of the culm length of the harvested cereal culm at a position near the upper portion of the raising portion 13, and a handle depth position of the transported grain culm at a position near the rear of the right ear tip transport lug 36c at the tip side A detection depth sensor 41 that is detected by the detection rod 41a and the stock side detection rod 41b is disposed and configured.

In the vicinity of the cutting input case 25 for rotatably supporting the raising and lowering of the mowing device 1, a mowing height position sensor 42 for detecting a mowing elevating position by a turning angle by a potentiometer or the like, and a handling depth adjusting chain. In the vicinity of the up-and-down swing fulcrum position 2, the handling depth position sensor 4 as the handling depth position detecting means 4 for detecting the handling depth adjustment position of the transported culm by the rotation angle of a potentiometer or the like can be operated. To be configured.

A handling depth control automatic switch 43 for automatically adjusting the supply position of the grain culm to the threshing device 3 and a mode changeover switch 44 for operating a sensor adjustment mode for adjusting various sensors are enabled to operate. Arrange and configure. On the panel portion of the operating device 18, a handle depth adjusting lever 45 for manually adjusting the handle depth and a hydraulic stepless transmission for switching between forward and reverse of the vehicle body 22 and continuously changing the vehicle speed are operated. A main shift lever 46, a power steering lever 47 for raising and lowering the reaper 1 by a forward and backward tilting operation, and a steering and turning operation of the vehicle body 22 to the left and right sides by a left and right tilting operation, and a reaper for turning on and off the operation of the reaper 1 The clutch lever 48 and the clutch lever 48 are disposed and configured.

As shown in FIG. 2, a CPU is mainly arranged to perform arithmetic control of an automatic circuit, and the handling depth adjusting chain 2
And a controller 51 having a built-in nonvolatile memory 50. The cutting height sensor 37, left and right direction sensor 38, left and right grain culm sensor 39, culm length sensor 40,
A handling depth sensor 41, a cutting height position sensor 42, a handling depth position sensor 4, a handling depth control automatic switch 43, a mode changeover switch 44, and the like are connected to each other, and the handling is performed via an output interface 51b on the output side. Depth adjustment motor 35
And a lifting electromagnetic valve 52 for operating the telescopic cylinder 16 of the reaper 1 are connected to each other.

With the weeds 12 approaching the soil surface, the traveling device 8 advances the vehicle body 22 and the cutting device 1 cuts a plurality of uncut culms.
At the same time as the raising action is carried out by 3, the stock side is scraped by the group of scraping lug belts 32, and the scraped stock side is further pinched by the group of scraping star wheels 33, and at the same time, cut by the cutting blade section 14. I do.

The cut side of the stock is collected and conveyed by a group of stock conveyer chains 34 of a stock concentrator, and threshing is performed from the confluence while adjusting the handling depth by the handling depth adjusting chain 2. At the same time as being conveyed and supplied to the apparatus 3, the spike side is collected and merged by the group of spike conveying lugs 36 of the spike collecting section, and further conveyed from this merged section to the threshing apparatus 3.

At the time of such combine operation, the handling depth control automatic switch 43 is turned ON, and the handling depth position of the grain culm ear portion conveyed and supplied to the threshing apparatus 3 is detected by the tip side detection rod 41a of the handling depth sensor 41. And when each of them is detected by the stock side detection rod 41b, the detection depth control means 49 drives the treatment depth adjustment motor 35 to operate the treatment depth adjustment chain 2 based on the detected value, and the threshing device 3 The control of the depth of operation that automatically adjusts the feeding position of the grain stalk is performed.

At the time of the operation of the handling depth control, the limit position of each adjusting action to the deep handling side or the shallow handling side is set by the handling depth position sensor 4 so that the adjustment position of the handling depth is set. Since it is possible to accurately detect, the threshing performance is not hindered by the deep handling due to the disorder of the handling depth position as in the related art, and the accuracy of handling depth control by the handling depth position sensor 4 can be improved. Can be planned.

Further, the adjusting action speed for controlling the handling depth is
As shown in FIG. 1, the stock side detection rod 41 of the handling depth sensor 41
In response to an output signal to the handle depth adjusting motor 35 based on the OFF signal b (adjustment signal to the deep handle side), the tip side detection rod 41
The output signal to the depth-of-hand control motor 35 by the ON signal a (adjustment signal to the shallow-hand side) is reduced so that the adjustment action speed to the shallow-hand side is smaller than the adjustment action speed to the deep-hand side. By delaying, even if the adjustment to the shallow handling side is suddenly performed, it is possible to prevent a phenomenon in which unhandled portions frequently occur due to the continuation of the shallow handling state as in the related art.

Further, as shown in the flow chart of FIG. 3, after the sensor adjustment mode is determined by turning on the mode switch 44, the handling depth control automatic switch is set as shown in the flowchart of FIG. When the limit position of each adjustment operation to the deep handling side or the shallow handling side by the handling depth position sensor 4 can be adjusted by turning on 43, the handling depth sensor 41 or the handling depth adjustment lever By the manual operation of 45, the operation is continued toward the deep handling side.

If the detected value to the deep handling side by the handling depth position sensor 4 does not change by, for example, 3 seconds or more due to the continuous action, this detected value is used as the handling depth adjusting chain 2.
Is determined, the value obtained by subtracting the amount by which the mechanical lock can be avoided from the detected value is set as the limit position of the adjustment operation toward the deep handling side.
After writing in a predetermined position of 0 and ending the sensor adjustment mode, the depth control is performed based on the depth limit position based on the memory value.

By performing such sensor adjustment,
Unlike the related art, an external device such as a microcomputer checker for adjustment is not required, and at the time of the adjustment, labor for adjusting operation of the handling depth adjustment chain 2 and getting on and off for position confirmation is omitted, which is very simple. In addition, the number of work steps can be reduced.

Further, in the above-described sensor adjustment mode, after the sensor adjustment mode is determined by turning on the mode changeover switch 44, the operation of the auger lever 53 for turning or moving the dumping auger 11 is never detected. In the state, even if a write operation is performed on the non-volatile memory 50 by adjusting each sensor detection value, regulation is performed so that the adjustment storage value is not updated.

By performing this restriction, it is possible to prevent the adjustment value from being erroneously changed even when the operator performs a normal operation without knowing that the sensor adjustment mode is set. As shown in FIG. 4, a CPU is mainly arranged to perform arithmetic control of an automatic circuit, and the engine 2
A controller 55 having an adjustment speed control unit 54 for controlling the handling depth adjustment speed according to the load of 0 is provided.

On the input side of the controller 55, via the input interface 55a, the tip detection rod 41a and the stock side detection rod 41b of the handling depth sensor 41, the shallow handling limit switch 56a and the deep handling side Limit switch 5
6b, an output changeover switch 57 for switching the handling depth adjustment output pattern to three stages by detecting the engine speed, and an engine speed sensor 58 for detecting the engine speed.
Are connected to each other.

An output side of the controller 55 is connected to a shallow output relay 35a and a deep output relay 35b of the handling depth adjusting motor 35 via an output interface 55b. With this configuration, as shown in the flowchart of FIG. 5, the engine speed is detected, and the pattern of the handling depth adjustment output controlled by the adjustment speed control means 54 at this engine speed is shown in FIG. As shown, for example, when the rotation speed is 2550 rpm or less, the adjustment speed on the shallow-hand side is increased (see FIG. 7A), and when the rotation speed is 2650 rpm or less, both adjustment speeds are the same (see FIG. 7B).
When the rotation speed is 0 rpm or less, the adjustment speed on the deep handling side is set to be high (see FIG. C).

When the handling depth adjustment is too shallow, the output to the deep handling side is obtained based on the values detected by the tip side of the handling depth sensor 41 and the stock side detecting rods 41a and 41b in accordance with the respective adjustment output patterns. And if it is too deep, output to the shallower side. As described above, by making the control speed for adjusting the handling depth of the transported grain culm supplied to the threshing device 3 according to the load of the engine 20 variable, the handling depth adjustment is performed when the load of the engine 20 is large. By increasing the control speed on the shallow side, engine stall due to overload can be prevented.

When the engine 20 is in an overloaded state, the control for holding the handle depth on the shallow handle side for a certain period of time is performed, as shown in the flowchart of FIG. When the engine speed is reduced due to the overload, a shallow handling output timer is set (for example, for 3 seconds), and a shallow handling output for adjusting the handling depth by this timer is performed.

When there is no decrease in the engine speed, the tip side and stock side detection rods 41 of the handling depth sensor 41 are not used.
Normal handling depth control is performed based on the detected values of a and 41b. Also, at the time of shipping inspection of a combine, etc., the hour meter of the monitor normally operates, which causes inconvenience. Therefore, as a method of stopping this operation, conventionally, a connector to the dynamo 17 is disconnected and a dedicated part is attached. Although it was stopped, this method required dedicated parts and was cumbersome.

Therefore, as shown in FIG. 8A, a fuse box 59 in which a large number of fuses used in each automatic circuit are loaded.
As shown in FIG. 8B, the operation of the hour meter can be stopped by using a jumper 60 by connecting a fuse by using an empty fuse portion in the inside.

[Brief description of the drawings]

FIG. 1 is a diagram showing a state of an output signal to a handling depth adjustment motor with respect to a handling depth adjustment signal.

FIG. 2 is a block diagram showing an electric circuit for performing arithmetic control for automating the operation of each device.

FIG. 3 is a flowchart showing a procedure for setting and writing an adjustment operation limit position to a deep handling side.

FIG. 4 is a block diagram showing an electric circuit for performing arithmetic control for automating the operation of each device.

FIG. 5 is a flowchart showing a procedure for changing a handling depth adjustment speed depending on the level of engine rotation.

FIG. 6A is a diagram showing a pattern state of a handling depth adjustment output according to a low engine speed. (B) A diagram showing a pattern state of a handling depth adjustment output depending on the engine speed. (C) A diagram showing a pattern state of a handle depth adjustment output according to a high engine speed.

FIG. 7 is a flowchart illustrating a procedure for maintaining the handling depth on the shallow handling side for a certain period of time when an overload occurs.

FIG. 8A is a plan view showing a fuse box in which a fuse used in each automatic circuit is loaded. (B) The block diagram which shows the state which arranged the jumper in the circuit of the dynamo and the monitor.

FIG. 9 is a side view showing the overall configuration of the reaper.

FIG. 10 is a plan view showing the overall configuration of the reaper.

FIG. 11 is a side view showing an arrangement state of each sensor / motor for automatic control and an operation lever.

FIG. 12 is a side view showing the overall configuration of the combine.

[Explanation of symbols]

 1. Reaper 2. Handling depth adjustment means 3. Threshing device 4. Handling depth position detection means

 ──────────────────────────────────────────────────続 き Continued on the front page F term (reference) 2B084 AA01 AC05 CC03 CE03 CG03 DD07 DH01 DJ03 DL03 DL10 DN11

Claims (2)

[Claims] 1. A combiner or the like which adjusts the handling depth from a confluence of a plurality of grain culm conveying rows cut by a cutting device 1 by a handling depth adjusting means 2 and supplies it to a threshing device 3. A depth-of-hand position detection means 4 for setting the limit position of each adjustment action to the deep handling side or the shallow handling side of the means 2 is provided, and the adjusting action speed to the shallow handling side is set to the deep handling side. A handling depth control device characterized in that it is slower than the adjusting action speed. 2. A combiner or the like for adjusting the handling depth from the confluence of a plurality of rows of grain culms conveyed by the harvesting device 1 by the handling depth adjusting means 2 and supplying it to the threshing device 3. There is provided a handling depth position detecting means 4 for setting a limit position of each adjusting action to the deep handling side or the shallow handling side of the means 2, and in an adjustment mode for adjusting a detection value of the detecting means 4, When the detected value of the detecting means 4 does not change for a predetermined time or more due to the continuous action on the side of the edge, a value subtracted from the detected value by a predetermined amount is set as the limit position to the deep handling side. 2. The handling depth control device according to 1.