JP2001258366A - Threshing depth control system for combine harvester or the like - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a system designed to prevent incomplete threshing due to grain culm shallow threshing and/or culm spills due to insufficient nipping of grain culms in convey them when a reaping at a reaping terminal end position is finished in an operation associated with a combine harvester or the like. SOLUTION: In a combine harvester or the like having a vehicle speed detective means 2 for calculating the running distance of the machine body 1, a running halt detective means 3 for detecting a running halt situation, a reverse-running detective means 6 for detecting a reverse-running situation, a front side grain culm detective means 8 for detecting the presence/absence of grain culms to be carried in a reaping device 7, and a threshing depth regulating means 5 for regulating the threshing depth position of grain culms to be fed to a threshing device 4, this threshing depth control system is characterized by having such a function as to make a regulating output toward deep threshing side to act with quick responsiveness by the means 5 along with making a regulating output toward shallow threshing side not to act, or make both the above regulating outputs to act separately, during the combine harvester's running a preset given distance from each of the positions detected respectively by the means 3, 6 and 8.

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, which controls a control output for adjusting a handling depth of a grain culm supplied to a threshing device according to various conditions during a mowing operation. And so on.

[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 usually, in order to change the cutting direction at this ridge, the aircraft is temporarily stopped, the direction is changed by reversing, and then the working method is to re-advance. Is common.

[0003] However, conventionally, when the airframe is steered and turned on such a ridge, the harvesting culm becomes short culm due to the mowing by raising the mowing device at the mowing end position. If the culm does not pass through the transporting section of the harvesting device and the adjustment to the shallow-hand side by the handling depth adjustment means is output, culm spillage due to improper pinching of the grain culm at the end of mowing or shallow handling This has caused factors such as the occurrence of unmanageable residuals due to entanglement.

Accordingly, the present invention prevents the culm from remaining untreated due to shallow handling of the culm at the end of mowing in the reaping operation, and prevents the culm from being spilled due to improper holding during transport.

[0005]

According to the first aspect of the present invention, there is provided a vehicle speed detecting means for calculating a traveling distance of an airframe, a vehicle stopping detecting means for detecting a stopped state, and a grain culm supplied to a threshing apparatus. In a combine or the like having a handling depth adjusting means 5 for adjusting the handling depth position of the vehicle,
While the vehicle travels a predetermined distance from the detection position where the stop state of the vehicle has been detected, the handling depth adjusting means 5 applies an adjustment output to the deep handling side with a quick response and moves to the shallow handling side. , Or a control for performing both of these adjustment outputs individually, and the like.

A second aspect of the present invention relates to a combine or the like having the vehicle speed detecting means 2 and the handling depth adjusting means 5 as described above, and further having a reverse detecting means 6 for detecting the reverse state of the body 1. While the vehicle travels for a predetermined distance from a detection position where the detection means 6 detects the change from reverse to forward movement, the handling depth adjusting means 5 applies an adjustment output to the deep handling side with a quick response. The control apparatus according to claim 1, further comprising a control that does not apply the adjustment output to the shallow handling side, or a control that individually performs both adjustment outputs. .

The third aspect of the present invention includes the vehicle speed detecting means 2 and the handling depth adjusting means 5 as described above, and further includes a front grain stem detecting means 8 for detecting the presence or absence of a transported grain stem in the mowing device 7. In the combine or the like having the cereal stalk detection means 8 on the front side,
While traveling a predetermined distance from the detection position where no grain culm is detected by the control unit, the handling depth adjusting means 5 applies the adjustment output to the deep handling side with a quick response and the shallow handling side. The control device of the present invention is provided with a control that does not apply an adjustment output to the control unit or a control that individually performs both adjustment outputs.

[0008]

According to the first aspect of the present invention, with the above structure, the body 1 temporarily stops at the end of cutting at the cutting end position, for example, when performing a steering turn for changing the cutting direction in the operation of the combine or the like. While traveling forward from a stop position where the stop detection means 3 has detected the state of movement, the vehicle travels a predetermined distance calculated and set in advance by the vehicle speed detection means 2, the handling depth adjustment means 5 moves the grain culm to the deep handling side. The control output is applied promptly and the control output to the shallower side is not applied, or both control outputs are performed separately, so that the short culm can be handled by cutting at the end of mowing. Depth control can be appropriately performed.

According to the second aspect of the present invention,
In work such as combine harvesting, at the end of mowing at the mowing end position, for example, when performing a steering turn for changing the mowing direction, the state of switching of the aircraft 1 from reverse to forward was detected by the reverse detection means 6. While the vehicle is traveling forward from the switching position by a predetermined distance calculated and set in advance by the vehicle speed detection means 2, the adjustment output to the deep handling side of the cereal stalk is promptly applied by the handling depth adjustment means 5 and shallow handling is performed. By not applying the control output to the side or performing both control outputs separately, it is possible to appropriately cope with the handling depth control of the short culm by cutting at the end of mowing.

According to the third aspect of the present invention, with the above-described configuration,
In work such as combining, at the end of mowing at the mowing end position, for example, when performing a steering turn for changing the mowing direction, the state of the transported culm of the mowing device 7 is detected by the front cereal culm detecting means 8. From the position where there is no grain culm, while traveling forward by a predetermined distance calculated and set in advance by the vehicle speed detecting means 2, the handling output of the grain culm by the handling depth adjusting means 5 is promptly applied by the handling depth adjusting means 5. At the same time, by controlling the control output to the shallow-hand side, or by performing both control outputs separately, it is possible to accurately control the handling depth of short culm by cutting at the end of mowing. Can be done.

[0011]

According to the first aspect of the present invention, as described above,
At the time of work such as combine harvesting, while traveling a fixed distance from the stop position of the body 1 detected by the stop detection means 3 at the harvesting end position, the adjustment output to the deep handling side of the grain stalk by the handling depth adjustment means 5 is provided. When mowing at the end of mowing, as in the past, by acting quickly and not applying the control output to the shallow handling side, or by performing both control outputs separately, Due to the short culm that occurs, the problem such as culm spillage due to improper pinching during transport and unhandled leftover due to shallow handling, which occurs during a fixed distance where the aircraft 1 starts running again from the stopped state, can be handled with an appropriate depth. It can be prevented by control.

According to the second aspect of the present invention, during the operation of the combine or the like, the vehicle 1 travels at a fixed distance from the position where the reverse movement of the body 1 detected by the reverse detection means 6 is switched to the forward position at the harvesting end position. The control output to the deep handling side of the cereal stalk is made to act promptly by the handling depth adjusting means 5 and the control output to the shallow handling side is made not to act, or both of the control outputs are adjusted. Due to the short culm that occurs when mowing is performed at the end of mowing, as in the related art, due to the short culm generated when the aircraft 1 travels a certain distance from the state where the aircraft 1 is switched from reverse to forward,
Problems such as culm spillage due to improper pinching during transport and unhandled left due to shallow handling can be prevented by proper handling depth control.

According to the third aspect of the present invention, as described above, during the operation of combine harvesting or the like, while traveling a certain distance from the position where there is no grain culm by the detection of the grain culm detecting means 8 at the cutting end position at the harvesting end position. The adjustment output to the deep handling side of the grain stalk is made to act promptly by the depth adjusting means 5 and the adjustment output to the shallow handling side is made not to act, or both adjustment outputs are performed separately. Due to the short culm that occurs when mowing is performed at the end of mowing, as in the related art, due to poor pinching during transport, which occurs during traveling a certain distance from the state without grain culm at the entrance of the reaping transport unit Problems such as spilling of the culm and unhandled portions due to shallow handling can be prevented by proper handling depth control.

[0014]

DESCRIPTION OF THE PREFERRED EMBODIMENTS Embodiments of the present invention will be described below with reference to the accompanying drawings. FIG. 8 shows an overall configuration of the combine, in which a traveling device 11 having a pair of left and right traveling crawlers 10 traveling on the soil surface is disposed below the chassis 9, and a feed chain is provided on the chassis 9. A grain tank 13 for threshing grain culms supplied by being pinched and conveyed to the grain 12 for selectively collecting the threshed grains and temporarily storing them, and a drain tank for discharging the grains stored in the tank 13 to the outside of the machine. A threshing device 4 having a grain auger 14 is mounted.

When the feed culm is an extremely short culm adjacent to the inner side of the feed chain 12, a short hull short culm 12a that sandwiches only the entrance portion and is released thereafter is provided. In front of the threshing device 4, a weeding body 15 for weeding uncut kernels from the front end side
And a raising part 16 for causing the weeded culm, a cutting blade part 17 for cutting the raised culm, and an adjusting and conveying part 18 for scraping and adjusting and conveying the cut cereal culm.
The harvesting device 7 having a supply transport unit 19 and the like that takes over the adjusted and transported grain culm and transfers it to the feed chain 12 is moved up and down on the soil surface by a telescopic cylinder 20 driven by hydraulic pressure. Is suspended from the front end.

An operation device 21 for controlling the operation of the combine is provided on one side of the reaper 7 and an operation seat 22 for this operation.
The Glen tank 13 is disposed on the rear side of the operation seat 22, the engine 23 is mounted on the lower side, and a cabin 24 that covers the operation device 21 and the operation seat 22 is provided.
The threshing device 4, the reaping device 7, the traveling device 11, the operating device 21, the engine 23, the cabin 24, and the like constitute the combine body 1.

A traveling transmission case 25 is mounted on the front end of the chassis 9 and, as shown in FIG. 7, a hydraulic stepless transmission 27 is provided at the right end of an input shaft 26 as a first shaft of the transmission case 25. An output shaft 28 for outputting a main speed change of the vehicle speed is connected in an interlocking manner, and a high-speed drive gear 29 having a clutch claw 29a is provided at a left end position of the input shaft 26 as an idler shaft.

A variable speed drive gear 30 formed by a double medium speed drive gear 30b having a clutch claw 30a and a low speed drive gear 30c meshingly connected to the clutch claw 29a of the high speed drive gear 29 is connected to an external auxiliary speed change lever. The shaft is rotated slidably left and right by a shift shifter 33 that moves on a shift stay 32 by an operation of 31.

At a right end position of a transmission shaft 34 as a second shaft for transmitting power to the reaper 7, a low speed L serving as a working speed is interlocked with a low speed drive gear 30c by sliding the speed change drive gear 30 left and right. Low-speed driven gear 35, an intermediate position, a medium-speed driven gear 36 that meshes with the medium-speed driving gear 30b to shift to a medium speed M as a working speed, and a left-side position, the transmission driving gear 30 and a clutch. The high-speed driving gear 29 connected by the pawls 30a and 29a and the high-speed driven gear 37 that shifts to the high-speed H as the traveling speed in conjunction with the engagement are arranged and stopped.

A shift position sensor 38 for detecting the shift position of the sub-shift, which has been shifted 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 speed change transmission gear 39 to be linked to the next stage is configured so as to be axially stopped between the low speed driven gear 35 and the medium speed driven gear 36.

At the center position of the steering shaft 40 as the third shaft,
A steering center gear 41 having clutch claws on both left and right side surfaces meshingly linked with the transmission gear 39 is stopped, and clutch claws on the left and right sides of the steering center gear 41 are provided.
Left and right steering clutches 42 each having a clutch pawl that can be meshed and connected are constituted by idle bearings.

Each of the left and right steering clutches 42 has a clutch gear 42a and a left and right steering shifter 43 for sliding the steering clutch 42 left and right.
And a multi-disc type left and right steering brake 44. The steering shifter 43 engages and connects the clutch claws. The steering clutch 42 that brakes the steering wheel 42 is configured to be operable with the disengaged state.

On a reduction shaft 45 serving as a fourth shaft, left and right dual reduction gears 46 which mesh with and interlock with the clutch gears 42a of the left and right steering clutches 42 are idler bearings.
The left and right axle gears 47 meshingly linked with the other small-diameter gear 46a linked to the next stage from 6 are respectively fixed to one ends of left and right axles 48 as a fifth shaft, which are arranged separately.

Left and right traveling sprockets 4 for driving the left and right traveling crawlers 10 are attached to the other ends of the left and right axles 48, respectively.
Speed detecting means 2 for stopping the vehicle 9 and detecting the vehicle speed at an appropriate position in the transmission path of the transmission case 25.
The vehicle speed sensor 2 is arranged and configured.

As shown in FIGS. 5 and 6, the cutting device 7 includes left, middle, and right stock transfer chains 50a, which are arranged in a Y-shape to scrape and transfer the stock side of the cut culm. 50
b, 50c, the handling depth is transferred to the handling depth adjusting chain 5 as the handling depth adjusting means 5 for adjusting the handling depth of the transported culm to a deep or shallow depth. As a fulcrum, it is arranged so as to be able to swing up and down by a handling depth adjusting motor 51.

Each stock transfer chain 50a, 50b, 50
c and the upper part of the handling depth adjusting chain 5, left, middle, and right ear tip transport lugs 52 a, 52 b, and 52 c for transporting the tip side corresponding to the root side of the grain stem, respectively. The adjustment transport unit 18 is configured. The appropriate position of the supply adjusting chain 53 which switches the grain culm which is taken over from the handling depth adjusting chain 5 and which is supplied to the threshing apparatus 4 to the feed chain 12 or the threshing short culm chain 12a, is moved forward and backward by a supply adjusting motor 54. The supply and transport unit 19 is arranged so as to be swingable.
Are configured.

As shown in FIG. 4, the front culm detecting means 8 for detecting ON / OFF of the cereal culm in the vicinity of the respective front end positions of the right and left stock carrier chains 50a and 50c of the adjusting / conveying unit 18 is used. The presence / absence of a transported grain stalk is turned ON in front of the grain stalk sensor 8 and near the front part of the handling depth adjustment chain 5.
The grain stem sensor 8a for detecting OFF is arranged so as to be operable.

A culm length sensor 55 for detecting ON / OFF of the length and length of the culm of the harvested grain culm near the upper position of the raising portion 16, and a handling depth of the grain culm near the rear position of the right ear tip conveying lug 52c. Position to the tip side detection rod 56a.
And a handling depth sensor 56 that detects the ON / OFF state of the stock side detection rod 56b.

A cutting height sensor 57 for detecting a cutting height by a turning angle of a potentiometer or the like near a vertical pivot point where the cutting device 7 is moved up and down, and a vertical swing of the handling depth adjusting chain 5. In the vicinity of the fulcrum position, 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 is operatively disposed and configured.

A power steering lever 59 for raising and lowering the reaping device 7 and steering and turning the machine body 1 during the reaping operation, and a main transmission for performing the speed control of the main transmission by the continuously variable transmission 27 and switching between forward and reverse. Lever 60 and reaper 7
A cutting clutch lever 61 for turning on / off the operation of the clutch and a sub-shift lever 31 for switching the sub-shift are arranged in the operating device 21.

A stop sensor 3 as a stop detection means 3 for detecting a stop state of the body 1 by the traveling device 11, a reverse sensor 6 as a reverse detection means 6 for detecting a reverse state of the body 1, and a reaper 7 A cutting stop sensor 62 for automatically stopping the operation when the height is increased by a certain height is arranged so as to be operable.

The CPU is mainly arranged and the arithmetic control of the automatic circuit is performed, and the stop state is detected by the stop sensor 3, the reverse state is detected by the reverse sensor 6, or the grain sensor 8 is detected.
From the detection of the OFF state of the cereal stem, etc., while the vehicle is traveling forward by a predetermined distance, the control output to the deep handling side of the handling depth adjusting chain 5 is promptly applied, and the shallow handling side is used. The controller 63 is provided with a built-in depth control function 63a that does not actuate the adjustment output to the controller or performs both adjustment outputs separately.

As shown in FIG. 3, to the input side of the controller 63, via the input interface 64a, the vehicle speed sensor 2, the stop sensor 3, the reverse sensor 6, the front of the grain culm sensor 8, the rear of the grain culm sensor 8a, the shift position. The sensor 38, the culm length sensor 55, the handling depth sensor 56, the cutting height sensor 57, the handling depth position sensor 58, the cutting stop sensor 62, and the like are connected to each other.

A depth adjustment relay 65a for driving the depth adjustment motor 51 to the depth side via the output interface 64b to the output side of the controller 63, and a depth adjustment relay for driving the depth adjustment motor 51 to the shallow side. A relay 65b and a supply adjusting relay 66 for driving the supply adjusting motor 54 toward the threshing short culm chain 12a are connected to each other.

In the combine operation, the cutting clutch lever 61 is engaged, the vehicle speed is detected by the vehicle speed sensor 2, the sub-shift position is detected by the shift position sensor 38, etc., and it is checked whether the grain sensor 8 is ON. Then ON
Then, at the time of the ridge, after the mowing device 7 is raised by operating the power steering lever 59 to perform mowing, the machine body 1 is stopped, and the direction is changed by reversing.

The cutting height of the cutting device 7 is detected by a cutting height sensor 57.
When it is 0 cm or more, the mowing device 7 and the drive of each part such as the feed chain 12 of the threshing device 4 are stopped by the detection of the mowing stop sensor 62, and then the mowing device 7 is lowered again to stop the cutting portion. Simultaneously with the start of driving, the forward movement of the machine body 1 is started to perform a mowing operation.

At the time of such a mowing operation, as shown in the diagram of FIG. 1, at the end of mowing at the mowing end position, the stopped state of the machine body 1 due to mowing is detected by the stop sensor 3, and then the mowing device 7 is lowered. When the vehicle travels forward, the grain culm that has become a short culm due to cutting from the stop position detected by the stop sensor 3 for a certain distance based on the detection value of the vehicle speed sensor 2 calculated in advance by the controller 63. The adjustment output of the handling depth adjustment chain 5 is controlled until the cutting force passes through the adjustment and supply conveyance units 18 and 19 of the reaper 7.

When the vehicle 1 is stopped and the reverse state for direction change is detected by the reverse sensor 6, and then when the reaper 7 is lowered to perform forward traveling, the reverse sensor 6 is detected by turning on the reverse sensor 6. From the reverse position, the control output of the handling depth adjusting chain 5 is controlled for a certain distance based on the detection value of the vehicle speed sensor 2 calculated in advance by the controller 63.

When the machine 1 is stopped to make a reverse movement for changing the direction, and then the reaper 7 is lowered for forward running, the position where there is no grain culm by the detection of the OFF of the grain culm sensor 8 is detected. From a certain distance based on the detection value of the vehicle speed sensor 2 calculated in advance by the controller 63,
The control output of the handling depth control chain 5 is controlled.

At the end of mowing, the cutting height sensor 57 detects the mowing state of the mowing device 7 at a predetermined height or a predetermined height, and then when the mowing device 7 is lowered to perform forward traveling. From the position where the cutting state is detected by the cutting height sensor 57, the adjustment output of the handling depth adjustment chain 5 is controlled to operate within a certain distance based on the detection value of the vehicle speed sensor 2 calculated in advance by the controller 63.

As described above, the adjustment output operation of the handling depth adjustment chain 5 is performed by turning off the stock side detection rod 56b of the handling depth sensor 56, and the adjustment output of the handling depth adjustment chain 5 to the deep handling side. Is controlled so that the control output is not applied to the shallow-hand side even if the spike-side detection rod 56a is turned on, or the control output for performing both of these control outputs separately is used to mow at the end of mowing. It is possible to prevent the occurrence of spilling of the culm due to poor conveyance and pinching of the grain culm due to short culm, and remaining unhandled due to shallow cultivation.

As described above, the handling depth adjusting chain 5
In performing the adjustment output operation by the above, the shift position sensor 38 detects the switching distance between the low speed L and the medium speed M as the auxiliary shift of the traveling transmission case 25 by a certain distance when the reaper 7 is lowered and the vehicle travels forward. Or a constant transport distance is calculated by a detecting means or the like for detecting the transport speed of the adjusting transport unit 18 or the like of the mowing device 7, so that an accurate distance can be detected and a good adjustment of the handling depth can be achieved. It can be carried out.

As described above, when performing the adjustment output operation by the handling depth adjustment chain 5, as shown in the diagram of FIG.
After the culm sensor 8a provided in the vicinity of the front position of the handling depth adjusting chain 5 is turned from the OFF state without the conveying cereal stem to the ON state with the cereal stem.
When the state is reached, the above-described prompt operation of the handling depth adjusting chain 5 toward the deep handling side and the execution of the control without applying the adjustment output to the shallow handling side are disabled.

By disabling the execution of such a control, when the spike-side detection rod 56a of the handle depth sensor 56 is turned ON at the beginning of mowing or the like,
Since the control output to the shallow-handling side can be made to act quickly, the threshing device 4 generated by the straw chips by the deep-handling
Can be prevented.

[Brief description of the drawings]

FIG. 1 is a diagram showing a state of a handling depth adjustment output during a predetermined distance from the end of mowing to the next forward movement.

FIG. 2 is a diagram illustrating a state of a handling depth adjustment output when the back of the grain sensor is turned on from OFF.

FIG. 3 is a block diagram showing an electric circuit related to automatic control.

FIG. 4 is a schematic side view showing a mounting positional relationship between each sensor and each motor group in the reaper.

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 developed front view showing a gear interlocking arrangement of the traveling transmission case.

FIG. 8 is a side view showing the overall configuration of the combine.

[Explanation of symbols]

 1. Airframe 2. Vehicle speed detection means 3. Stop detection means 4. Threshing device Handling depth adjustment means 6. Reverse detection means 7. Reaper 8. Front culm detection means

Claims (3)

[Claims] 1. A vehicle speed detecting means 2 for calculating a traveling distance of an airframe 1, a stop detecting means 3 for detecting a stopped state, and a handling depth for adjusting a handling depth position of a grain culm supplied to a threshing device 4. In a combine or the like having the adjusting means 5, while the vehicle travels a predetermined distance from a detection position where the stopping state of the body 1 is detected by the stop detecting means 3, a quick response is provided by the handling depth adjusting means 5. A control depth that is provided with a control to apply an adjustment output to the deep handling side and not to apply an adjustment output to the shallow handling side, or a control to perform both adjustment outputs separately. Control device. 2. In a combine or the like having the vehicle speed detecting means 2 and the handling depth adjusting means 5 as described above, and further including the reverse detecting means 6 for detecting the reverse state of the body 1, the reverse detecting means 6 While traveling for a predetermined distance from the detection position where the switch from the forward to the forward is detected, the handling depth adjusting means 5 applies an adjustment output to the deep handling side with a quick response and a shallow handling. 2. The handling depth control device according to claim 1, further comprising a control that does not apply an adjustment output to the side or a control that individually performs both adjustment outputs. 3. A combine or the like having the vehicle speed detecting means 2 and the handling depth adjusting means 5 as described above, and further including the front grain culm detecting means 8 for detecting the presence or absence of a conveyed grain culm in the reaper 7. While the vehicle travels a predetermined distance from a detection position where no grain culm is detected by the grain culm detection means 8 on the front side, the handling output is adjusted by the handling depth adjusting means 5 to the deep handling side with a quick response. 2. The handling depth control device according to claim 1, further comprising a control for causing the control output not to be applied to the shallow handling side and a control for performing both of the adjustment outputs separately.