JPH11275931A - Near levee-controlling apparatus for combine harvester or the like - Google Patents

Abstract

PROBLEM TO BE SOLVED: To set the adjustment timing of a threshing depth adjusting means by calculating the grain culm transportation distance of a reaping apparatus based on the advance distance of a machine body at a low speed in high reaping in an operation near a levee. SOLUTION: When high reaping is carried out while avoiding the collision of a reaping apparatus with a levee near the levee in reaping by the reaping apparatus, in a combine harvester or the like having a threshing depth adjusting means for adjusting the threshing depth of grain culm transported by a grain culm transportation part by the detection of the high reaping and a distance detecting means for discovering the advance distance of a machine body, the advance distance at a low speed is detected, the transportation distance of grain culm is calculated from the detected value and an adjustment timing by the threshing depth adjusting means is set.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a ridge control device such as a combine and the like, and more particularly to a control device for controlling the handling depth of grain culms supplied to a threshing device by detecting high cutting at a ridge during cutting. Belongs to the field.

[0002]

2. Description of the Related Art At the time of work in a combine or the like, a culm harvested by a reaping device is transported and supplied to a threshing device to perform a threshing operation. A ridge is always provided around the section, and if the reaping device is kept at the normal cutting height, it will collide with the ridge at the cutting end position. Conventionally, since the grain culm that has been subjected to high cutting is a short culm, it is adjusted to a deep handling side by a handling depth adjusting means at a quantitative timing from a time when this high cutting is detected. Was common.

[0003] However, when the high mowing is performed in the ridge work, as in the prior art, when the high mowing is detected, it is adjusted to the deep handling side at a quantitative timing. When the vehicle speed is changed, it is difficult for the handling depth adjustment means to adjust to the deep handling side at the appropriate timing, and this adjustment is delayed. When this was the case, culm spillage due to improper pinching of the short culm and unhandled occurrence due to shallow culling were factors.

Therefore, according to the present invention, at the time of high mowing in the ridge work, the transport distance of the grain culm of the mowing device with respect to the traveling distance of the machine at low speed is calculated, and the adjusting timing of the handling depth adjusting means is set.

[0005]

According to the present invention, a reaper 1 is provided.
When performing high cutting by avoiding collision with the ridge in the vicinity of the ridge at the time of cutting by the cultivation, the detection of the high cutting and the grain culm transport unit 2
Depth adjustment means 3 for adjusting the handling depth of the grain culm to be conveyed to the deep handling side, and distance detecting means 5 for detecting the traveling distance R of the body 4, etc., at a low speed. The distance R is detected, and the transport distance F of the grain stalk is calculated from the detected value.
Is calculated and the timing of adjustment by the handling depth adjusting means 3 is set.

[0006]

According to the above-mentioned structure, during cutting work in a combine or the like, the cutting device 1 is raised to perform high cutting by raising the cutting device 1 in order to avoid collision with the ridge at the ridge at the cutting end position.
By detecting the high mowing, the traveling distance R of the body 4 when the vehicle speed is low, for example, when the subtransmission of the traveling transmission case is low, is detected. By calculating the transport distance F of the grain culm and setting the adjustment timing to the deep handling side by the handling depth adjusting means 3 based on the calculated value, even when the vehicle speed is switched to the high speed side due to shifting, FIG. As shown, in the comparison between the ratio a of the transport distance F of the grain culm to the travel distance R at low speed and the ratio b of the transport distance F of the cereal culm to the travel distance R on the high speed side, the ratio at the lower speed than the high speed side is smaller. However, since the transport distance becomes longer, setting the adjustment timing at low speed allows the adjustment timing on the high speed side to be delayed even if it is advanced, so that the stalk length can be reduced from normal cutting to high cutting. That an adjustment timing to shift to the short culm can perform adjustment of threshing depth without delaying regardless of the vehicle speed.

[0007]

As described above, when cutting is carried out at the ridge at the time of cutting work in a combine or the like, the traveling distance R of the machine body 4 when the vehicle speed is low is detected by detecting the high cutting to detect the grain. By calculating the transport distance F of the culm, and setting the adjustment timing to the deep handling side by the handling depth adjusting means 3 from this calculated value, the adjustment timing of the handling depth even when the vehicle speed is switched to the high speed side is set. Since it can be set earlier without delay, adjustment to the deep handling side when shifting from normal grain culm length to short culm does not delay regardless of the vehicle speed, and grain culm due to adjustment delay It is possible to prevent spilling of the culm and occurrence of unhandled portions due to shallow handling, and to maintain stable threshing performance by adjusting a proper handling depth.

[0008]

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 provided below the chassis 6, and a feed chain is provided on the chassis 6. A grain tank 10 for threshing grain culms supplied by being pinched and conveyed to the container 9, and for selectively collecting and temporarily storing the threshed grains.
And a threshing device 11 having a grain discharging auger 10a for discharging the grains stored in the tank 10 to the outside of the machine. When the feed grain culm is an extremely short culm adjacent to the back side of the feed chain 9, a short thresh culm chain 9a that clamps only the entrance portion and releases it thereafter is provided.

In front of the threshing device 11, a weeding body 12 for weeding the planted grain culm from the front end side, a raising part 13 for causing the weeded grain culm, and a cutting blade part for cutting the caused grain culm. 14, a cereal stalk transport unit 2 for scraping and transporting the cut culm, a supply transport unit 15 for taking over the stalks to be raked and delivered to the feed chain 9, and the like. The mowing device 1 whose speed is synchronized with the vehicle speed is suspended from the front end of the chassis 6 so as to be able to move up and down on the soil surface by a telescopic cylinder 16 driven by hydraulic pressure.

An operating device 17 for controlling the operation of the combine is provided on one side of the reaper 1, and an operating seat 18 for this operation.
The Glen tank 10 is disposed behind the operation seat 18, an engine 19 is mounted on the lower side, and a cabin 20 that covers the operation device 17 and the operation seat 18.
The harvesting device 1, the traveling device 8, the threshing device 11, the operating device 17, the engine 19, the cabin 20, and the like constitute the combine body 4.

A traveling transmission case 21 is mounted on the front end of the chassis 6 and, as shown in FIG. 4, a hydraulic stepless transmission 23 is provided at the right end of an input shaft 22 as a first shaft of the transmission case 21. An output shaft 24 for outputting the main speed change of the vehicle speed is interlocked, a high-speed driving gear 25 having a clutch claw 25a is idlely mounted at the left end position of the input shaft 22, and the clutch claw is meshed and connected with the clutch claw 25a. Speed-change drive gear 26 formed by two medium-speed drive gears 26b having a gear 26a and a low-speed drive gear 26c
Is rotated by a shift shifter 29 that moves on a shift stay 28 by operating an external auxiliary shift lever 27 so that the shaft can be rotated left and right.

At a right end position of a speed change shaft 30 as a second shaft for transmitting power to the reaper 1, a low speed L as a working speed is interlocked with a low speed drive gear 26c by sliding the speed change drive gear 26 left and right. Low-speed driven gear 31, a medium-speed driven gear 32 at an intermediate position that meshes with a medium-speed drive gear 26 b to shift to a medium speed M as a working speed, and a constant-meshed interlock with the high-speed drive gear 25. And a high-speed driven gear 33 that shifts to a high-speed H as a traveling speed by meshing connection between a clutch claw 25a of the high-speed drive gear 25 and a clutch claw 26a of the speed-change drive gear 26.

A shift position sensor 34 for detecting the shift position of the sub-shift, which has been switched to three speeds of low speed L, medium speed M, and high speed H, is disposed at an appropriate position in the speed change path, and the speed-changed power is used. The shift transmission gear 35 to be linked to the next stage is configured so as to be axially stopped between the low-speed driven gear 31 and the medium-speed driven gear 32. At the center position of the steering axis 36 as the third axis,
A steering center gear 37 having clutch claws on both left and right side surfaces meshingly linked with the transmission gear 35 is axially stopped, and left and right clutch claws which can be meshed and connected to the left and right clutch claws of the steering center gear 37 respectively. The left and right steering clutches 38 each have a clutch gear 38a and a left and right steering shifter 39 for sliding the steering clutch 38 left and right.
A multi-disc type left and right steering brake 40 is provided, and the steering clutch 38 engages and connects both clutch claws by a steering shifter 39, and both clutch claws are separated and the steering brake 40 is braked. It is configured to be operable with the disengaged state of the direction clutch 38.

On a reduction shaft 41 serving as a fourth shaft, left and right dual reduction gears 42 which mesh with and interlock with a clutch gear 38a of the left and right steering clutches 38 are idler bearings.
The left and right axle gears 43, which are in mesh with the other small-diameter gears 42a to be interlocked with the second stage from the second stage, are respectively axle-fixed to one end of a left and right axle 44, which is a left and right separately arranged fifth shaft, and The left and right traveling sprockets 45 for driving the left and right traveling crawlers 7 are each stopped by an axle, and a vehicle speed sensor 5 as a distance detecting means for detecting a vehicle speed is disposed at an appropriate position in the transmission path of the transmission case 21. Let it.

As shown in FIGS. 5 and 6, the reaper 1 includes left, middle, and right stock transfer chains 46a arranged in a Y-shape for scraping and transferring the stock side of the cut culm. 46
The handling depth adjusting chain 47 which adjusts the handling depth of the transported culm to a deep or shallow depth from the confluence of the b and 46c is taken over, and the handling depth adjusting chain 47 is provided with its front end as a fulcrum. And the upper end of each of the stock transport chains 46a, 46b, 46c and the handling depth adjusting chain 47, and the tip side thereof is transported corresponding to the stock side of the grain stem. Left / middle / right spike transport lugs 50
a, 50b, and 50c are arranged to configure the grain culm transport unit 2.

An appropriate position of the supply adjusting chain 51 for switching the grain culm which is taken over from the handling depth adjusting chain 47 and supplied to the threshing device 11 to the feed chain 9 or the threshed short culm chain 9a is set to an appropriate position. And a supply / conveyance unit 15 arranged to be swingable back and forth. As shown in FIG. 7, a cereal culm sensor front 53 for detecting ON / OFF of the cereal culm in the vicinity of each front end position of the left and right stock carrier chains 46a and 46c of the cereal culm conveying part 2,
In the vicinity of the front position of the handling depth adjustment chain 47, a grain stalk sensor rear 54 for detecting ON / OFF of the presence or absence of a grain culm,
A culm length sensor 55 that detects ON / OFF of the culm length of the cut culm in the vicinity of the upper position of the raising portion 13.
And a handling depth adaptive sensor 56 for detecting the handling depth adaptive position of the transported grain culm in the vicinity of the rear portion of the right ear tip transporting lug 50c by ON / OFF of the tip side detection rod 56a and the stock side detection rod 56b. Are operatively arranged and configured.

A cutting height sensor 57 for detecting a cutting height by a rotation angle of a potentiometer or the like near a vertical rotation fulcrum position for raising and lowering the cutting device 1, and a vertical swing fulcrum position of the handling depth adjusting chain 47. And a handling depth position sensor 58 for detecting the handling depth adjustment position of the transported grain culm by a rotation angle of a potentiometer or the like, and operatively disposed. The adjusting chain 47 is moved to the handling depth position sensor 58.
The depth adjustment means 3 is configured to adjust the depth to the deep side by the depth adjustment motor 48 while confirming the above.

In order to avoid collision with the ridge at the end of the ridge at the end position of the reaping at the time of the cutting operation, when the cutting device 1 is raised by operating the power steering lever 59 to perform high cutting, the high cutting is detected by the cutting height sensor 57. When it is detected, the ridge control switch 60 for automatically adjusting the handling depth adjusting chain 47 to the deep handling side, and the main gear shift control by the continuously variable transmission 23 are controlled, and the reaper 1 is moved when the rake device 1 is raised. The main shifting lever 61 provided with a cutting stop switch 61a for automatically stopping the operation, a cutting clutch 62 for turning the cutting device 1 on and off, and a sub-transmission lever 27 for shifting the sub-transmission, the operating device 17 To be configured.

As shown in FIG. 2, the CPU is mainly arranged to control the operation of the automatic circuit, and the traveling distance R at low speed is controlled.
And a controller 63 having a built-in handling depth adjusting means 3 for adjusting the handling depth adjustment chain 47 to the deep handling side at an appropriate timing by calculating the transport distance F of the grain stalk to the controller 63, and to the input side of the controller 63 Input interface 63a
Via the vehicle speed sensor 5, the shift position sensor 34, the grain culm sensor 53 before, the grain culm sensor 54, the culm length sensor 55, the handling depth adaptive sensor 56, the cutting height sensor 57, the handling depth position sensor 58, and the ridge A control switch 60 and a reaping automatic stop switch 61a are connected to each other, and a depth adjustment relay 64a and a shallow depth adjustment relay 64a for driving the depth adjustment motor 48 to the output side via an output interface 63b. And a supply adjustment relay 65 for driving the supply adjustment motor 52 to the threshing short culm chain 9a side.

In the combine operation, as shown in the flowchart of FIG. 1, the ridge control switch 60 is turned on, the cutting clutch 62 is turned on, the vehicle speed is detected by the vehicle speed sensor 5, and the sub-shift position is detected by the shift position sensor 34. I do. It is checked whether the front of the culm sensor 53 is ON, and if it is ON, the cutting height when the cutting device 1 is raised by operating the power steering lever 59 at the ridge is detected by the cutting height sensor 57, and this cutting height is detected. If the length is, for example, 20 cm or more, the timing for adjusting the handling depth adjusting chain 47 to the deep handling side is set by the handling depth adjusting means 3.

At the same time as setting the adjustment timing, it is checked whether the automatic cutting switch 61a is OFF, and if it is OFF, the culm length sensor 55 determines whether the culm length of the harvested grain culm is not less than 60 cm or less, for example. Detection is performed, and if it is above, the handling depth adjustment chain 47 is adjusted to the deep handling side for a certain time (for example, about 1.5 seconds) according to the set timing at the set adjustment timing. Next, when the detection of the cereal culm by the cereal culm sensor rear 54 is OFF, it is determined that there is no remaining culm in the cereal culm transport unit 2, and the mowing device 1 is lowered and the handling depth adjustment chain 47 is simultaneously moved to the original position. Adjust to return to.

If the culm length is 60 cm or less, the handling depth adjusting chain 47 is adjusted to the deepest handling side according to the set adjustment timing, and the supply adjusting chain 51 is supplied to the threshing short culm chain 9a. Adjust to the position you want. Next, the detection of the cereal stalk by the cereal stalk sensor 54 is OF
In the case of F, it is determined that there is no remaining culm in the grain culm transport unit 2, and the harvesting device 1 is lowered, and at the same time, the handling depth adjustment chain 47 and the supply adjustment chain 51 are adjusted to return to their original positions.

As described above, when the cutting height sensor 57 detects a higher cutting than a predetermined height, the timing at which the short culm by the high cutting reaches the handling depth adjusting chain 47 is set, and the handling depth adjusting chain 47 is set. As a means for setting the adjustment timing, as shown in FIG. 3, the ratio a of the conveying distance F of the grain culm to the traveling distance R at the low speed L, and the medium as shown in FIG. In comparison with the ratio b of the transport distance F of the grain culm to the travel distance R at the speed M, the transport distance is larger at the low speed L than at the medium speed M. Therefore, the adjustment timing should be set at the low speed L. Thus, even at the medium speed M, the handling depth adjustment chain 47 can be adjusted to the deep handling side earlier without delaying the adjustment timing.

By setting the adjustment timing, regardless of the vehicle speed, it is possible to prevent the stalks of the grain stem from being spilled due to the delay of the adjustment and the occurrence of unhandled residue due to shallow handling, and to stably thresh by adjusting the appropriate handling depth. Performance can be maintained. Further, in addition to performing the adjustment for returning the handling depth adjusting chain 47 to the original position by the end of the high mowing when it is determined that there is no cereal culm in the cereal culm transport unit 2 as described above, the sub-shift is performed as the traveling speed. By comparing the ratio of the transport distance of the cereal culm to the travel distance at the high speed H and the ratio of the transport distance of the cereal culm to the travel distance at the medium speed M or low speed L, by setting the adjustment timing to the high speed H Since the returning timing of the handling depth adjusting chain 47 can be set later, it is possible to prevent the above-mentioned problem due to premature return.

Further, as described above, when high mowing above a certain height is detected, the handling depth adjustment chain 47 is used based on the handling depth position of the cereal stem detected by the handling depth position sensor 58.
Has been adjusted to the deep-handling side for a certain time, but is changed to the deep-handling side for a certain time, as shown in FIG. Compared to when, the position on the deep handling side and the return to the original state can be performed more accurately.

A non-volatile memory 66 is connected to the controller 63 as shown in FIG. 2, and the non-volatile memory 66 stores the upper limit value and the lower limit value of the handling depth position sensor 58. When the handle depth position sensor 58 reaches the upper limit value or the lower limit value as shown in FIG. 9 while performing the adjustment of 47, the output is stopped so as to be provided at the upper limit position and the lower limit position. Limit switches can be eliminated.

When the adjustment is performed by the handling depth adjusting chain 47 as described above, as shown in FIG. 10, the handling depth position sensor 58 is adjusted from the θ1 value to the θ2 value by a constant value θ toward the deep handling side. If the output does not change from the θ1 value, the abnormality is notified to the operator, and the adjustment by the handling depth position sensor 58 is switched to the adjustment by time, and t is changed.
By outputting only the time, the adjustment control can be performed as much as possible even when an abnormality occurs, and the fault tolerance can be improved.

When the handling depth adjusting chain 47 is adjusted to the deep handling side by a constant value θ as described above, FIG.
When the handling depth adjustment chain 47 reaches the upper limit position (or a certain or more depth handling position) as shown in FIG. 7, the supply adjustment chain 51 is adjusted to the threshing short culm chain 9a side,
The grain culm can be supplied to the threshing apparatus 11 with an appropriate handling depth.

[Brief description of the drawings]

FIG. 1 is a flowchart showing a control procedure for adjusting a handle depth position of a grain stalk during high cutting on a ridge.

FIG. 2 is a block diagram showing an electric circuit related to automatic control.

FIG. 3 is a diagram showing a ratio between a traveling distance of a machine body and a conveying distance of a grain stalk at a low speed and at a medium speed.

FIG. 4 is a front view showing a gear arrangement of a subtransmission in a traveling transmission case.

FIG. 5 is a plan view showing the entire configuration of a mowing device and a part of a threshing device.

FIG. 6 is a side view showing a configuration related to a handling depth adjusting chain in a grain culm conveying section of the mowing device.

FIG. 7 is a schematic side view illustrating a mounting positional relationship between each sensor and each motor group in the reaper.

FIG. 8 is a diagram illustrating a state in which a detection value of a handling depth position sensor is adjusted to a deep handling side by a certain value.

FIG. 9 is a diagram showing a state in which an upper limit value and a lower limit value of a handling depth position sensor are stored in a memory.

FIG. 10 is a diagram illustrating a state where the detection value of the handling depth position sensor is switched to adjustment of time.

FIG. 11 is a diagram showing a state in which the supply adjustment chain is adjusted when the upper limit of the handling depth position sensor is detected.

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

[Explanation of symbols]

 1. Reaper 2. Grain culm transport unit 3. 3. Handling depth adjustment means Aircraft 5. Distance detection means

Claims (1)

[Claims] When a high cutting is performed while avoiding a collision with a ridge at the edge of a ridge at the time of cutting by the reaper 1, the handling depth of the cereal culm conveyed through the cereal culm conveying unit 2 by detecting the high mowing is increased. In a combine or the like having a handling depth adjusting means 3 for adjusting to the handling side and a distance detecting means 5 for detecting the traveling distance R of the body 4, the traveling distance R at low speed is detected, and the grain culm is detected from the detected value. Calculate the transport distance F and adjust the handling depth 3
A ridgeside control device, characterized by setting the timing of adjustment by the ridge.