JPH114618A - Combine harvester provided with high level cutting control - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide the subject combine harvester which prevents a problem of excessive lifting of grain culms involved in the conventional combine harvester whose grain culm lifter becomes smaller in angle toward the backside when it moves upward from the normal operational position to the high level cutting position, with the result that lug lifting locus shifts from the upside to the backside to lift fallen grain culms backward earlier. SOLUTION: This combine harvester is equipped with a reaping pretreatment device 3, which freely moves in the vertical direction, in front of a running vehicle body 2 carrying a threshing machine. The reaping pretreatment device 3 is equipped with a slanted grain culm lifter 4, with one end at the lower section of the harvester front and the other at the upper section of the harvester back. The lifter 4 is also equipped with a gear 5 which changes lifter speed. The combine harvester is also equipped with a high level cutting control which instructs the gear 5 to move the reaping pretreatment device 3 at a lower speed, when it moves upward to reach the high level cutting position, than that at the normal operational position.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a combine having high cutting control, and belongs to the technical field of agricultural machinery.

[0002]

2. Description of the Related Art Conventionally, a combine is composed of a weeding body at the lower front end, a grain culm raising device erected in an inclined state at the rear, a lower mowing device, and a grain culm for transporting the harvested grain culm backward. A mowing pre-processing device having a transport device and a handling depth adjusting device for adjusting supply is provided at a front portion, and a threshing device is mounted on a rear traveling body to thresh the supplied grain culm. Have been. The harvesting pretreatment device has a configuration in which a rear upper position is rotatably pivotally attached to the traveling vehicle body, and a high mowing control can be performed while vertically adjusting the front and rear culm raising devices and the mowing devices. Has become.

[0003]

When the traveling vehicle reaches the edge of the ridge and begins to harvest the headland, the above-mentioned combine does not allow the weeding rod to collide with the ridge that is higher than the field scene. The processing device is sequentially raised to shift to high mowing work. In this way, when the pre-cutting device is raised and moved to the high mowing work position, the front of the culm raising device at the front portion is gradually inclined backward from the tilt angle of the normal working position, and the raising rug is raised. The raising angle (direction) changes from the upper side to the rear side, and causes the lodging culm to be quickly rearward, resulting in a phenomenon that causes too much.

[0004] That is, the raising angle of the grain culm is determined by the raising angle (direction) of the raising rug 22 and the raising speed, and in order to raise the grain limb with a constant lodging degree, the raising angle is required. The closer to the upright position, the higher the speed of the raising is required. The lower the raising angle (backward inclination) is, the more the raising occurs. Raising rugs described above, when continuing to work with the same raising speed, normally works on the cereal culm in the normal working position, what caused the lodging grain culm to the upright position, As the rear inclination of the device becomes gentler, there is a problem that the grain stem is raised to a position where it falls down backward.

[0005]

The present invention takes the following technical means in order to solve the above-mentioned problems. That is, in front of the traveling vehicle body 2 on which the threshing device 1 is mounted, the pre-cutting device 3 is provided to be able to move up and down freely, the starting portion of the pre-cutting device 3 is located at the lower front and the end portion is An inclined grain stem raising device 4 located at the upper rear side is provided, and the grain stem raising device 4 is equipped with an elevating transmission 5 for increasing or decreasing the elevating speed, and the elevating transmission 5 is provided. Is a combine having a high mowing control in which the mowing pretreatment device 3 is configured to decelerate from the normal operating position in association with reaching the high mowing operation position.

[0006]

Embodiments of the present invention will be specifically described below with reference to the drawings. First, the configuration will be described. The traveling vehicle body 2 is configured such that a crawler 6 molded from a rubber material is wound around a driving sprocket 7 and a plurality of idler wheels 8 so that the traveling vehicle 2 can travel without sinking not only in a dry field but also in a wet field. And threshing device 1
Has a feed chain 9 on which a handling cylinder 10 is mounted on the upper side, and a sorting chamber is provided on the lower side, and the supplied harvested culms are threshed and sorted on the traveling body 2. It is installed.

The auxiliary feed chain 12 is provided along the inside of the feed chain 9, the start end is wound around a transmission sprocket 13 transmitted from the feed chain 9, and the end is supplied to the handling chamber 11. It extends to near the mouth,
The culm inherited from the feed control device 14 described later is
The configuration is such that it is supplied to the handling room 11 in cooperation with the dochien 9 or alone.

The auxiliary feed chain 12 is shown in FIG.
In the case of the embodiment shown in (1), the start end of the feed chain 9 is positioned forward by "H" from the start end of the feed chain 9, and a wrap portion with a supply adjusting device 14 described later is lengthened. Therefore, the auxiliary feed chain 12 has an advantage that the transfer of the grain culm from the supply adjusting device 14 becomes accurate, and the spilling of the culm during the transfer can be prevented. And
In the case of the embodiment shown in FIG. 9, the auxiliary feed chain 12 is formed by connecting the feed chain 9 to the feed chain 9 by a transmission shaft 45 comprising a spline shaft which can freely expand and contract and a spacing adjusting plate 46. I have. With this configuration, the auxiliary feed chain 12 is set close to the feed chain 9 for short culm, and is securely inherited. When the long culm is used, the auxiliary feed chain 12 is set at a wide interval to assist the feeding on the tip side and to match the culm length. There is a feature that can work.

Next, as shown in FIG. 1, the mowing pre-processing device 3 turns a rear portion of the mowing frame 16 extending forward and downward on a support 15 provided at a front portion of the traveling vehicle body 2 up and down. The cutting frame 16 is pivotally connected to the cutting frame 16 and is equipped with a grain stem raising device 4, a cutting device 17, and each grain stem conveying device to be described later. That is, the pre-cutting device 3 comprises a weeding rod 18 at the lower front end, a grain stem raising device 4 having an inclined shape behind it, a cutting device 17 at a lower rear portion thereof, and a cutting device 17 further. And the above-mentioned feed chain 9 and auxiliary feeder.
Between the start end of the dochien 12 and a scraping transfer device 19;
The front conveying device 20, the handling depth adjusting device 21, and the supply adjusting device 14 are arranged so as to be capable of successively transferring the grain culm, and are attached to the above-described cutting frame 16 so as to be capable of transmitting. I have. First, the grain stalk raising device 4 is configured such that the raising rugs 22 arranged at predetermined intervals are raised and rotated upward, and the starting end is lower at the front of the cutting frame 16. It is located at the front, the rear end is located at the rear upper side, and is provided in a rearward inclined shape, so that the lodging culm after weeding is raised upright. As shown in FIG. 1, the elevating transmission 5 winds a belt 25 around a drive pulley 23 and a speed change pulley 24 whose rotation diameter changes as a split type, and a speed change tension roller 26 It is configured to shift by pressing, and is provided at an intermediate position of the transmission path of the grain stem raising device 4. Then, shifting the tension Russia - La 26, described later control - shift control motor driven by a control signal outputted from the La 27 - is connected to the motor M _1.

Next, as shown in FIG. 1, the scraping transport device 19 includes a lower scraping wheel 19a and an upper scraping endless belt 19a.
b, and the cutting device 17
, And the grain stalk is raked and transported backward. The front transfer device 20 is composed of a stock transfer chain 20a and a spike transfer lug 20b. The start end of the front transfer device 20 is faced to the terminal end of the scraping transfer device 19 so as to be able to be inherited. And the left and right transported grain culms join at the end.

Incidentally, the tip-tip transport lug 20 shown in the embodiment
b is provided on one side provided inclining in plan view from the right side of the front part in the traveling direction to the starting end side of the feed chain 9 so as to extend to the rear part of the pre-cutting device 3, and is provided in a continuous state. It is configured to transport the culm ears. Next, the handling depth adjusting device 21 is composed of a transport chain and a holding rod as is well known in the art, and has a start end at an end of the front transport device 20 so as to be able to inherit the root of the transported grain culm. The rear end is extended upward and rearward so as to face the start end of the supply adjusting device 14 described later. And the handling depth adjusting device 21
Has a structure in which the starting end is pivotally connected to the cutting frame 16 and the end side swings up and down along the culm direction of the transported culm. Threshing depth control motor - motor -M ₂ is, in Example equipped upward at a position near the threshing depth adjusting device 21,
It is provided so as to be linked to the handling depth adjusting device 21 via a connecting rod 29, and is driven based on an operation signal output from a controller 27 to be described later to control the handling depth.

Next, as shown in FIG. 5, the supply adjusting device 14 is provided so as to clamp and transport the grain stalk by the supply chain 30 and the holding rod 31, and from the end of the handling depth adjusting device 21. The supplied grain culm is transferred to the beginning of the auxiliary feed chain 12 (feed chain 9) to control the supply. Specifically, the supply adjusting device 1
Reference numeral 4 denotes a drive sprocket mounted on the upper surface of an integral transmission box 32 located on the side of the auxiliary feed chain 12 (feed chain 9) from the base of the cutting frame 16 as shown in FIG. The supply chain 30 is supplied to a roller 33, which is supported by a movable chain rail 34 for guiding the supply side of the supply chain 30 from the inner surface thereof, and a tension roller 36 located in front of them and having a tension function. It is wound up.

The movable chain rail 34 guides the transport side of the supply chain 30 from the inner surface as described above. The movable chain rail 34 extends from the transmission box 32 obliquely forward and extends. It is provided so as to be freely rotatable at the front part, and the tip of the wheel 35 can be moved toward and away from the start end of the auxiliary feed chain 12. Further, the tension roller 36 is provided with the support arm 3.
7 is provided on a tension arm 39 extending from a fixing machine frame 38 fixed to an intermediate portion of the shaft 7, and is tensioned outward (in the direction in which the chain 30 is stretched) by a tension spring 40.

[0014] Then, the supply control motor - motor -M ₃ is below the supply chain 30, whereas frame reaper side - is fixed to arm 16 side, equipped attached to the fixed machine frame 38 and the other side is the, The movable chain rail 34 through the lot 41
And is driven based on an operation signal output from the controller 27 to perform supply adjustment control.

As shown in FIG. 5, the holding rod 31 is provided with two front and rear parts so as to always hold the transported culm in a tensioned state along the cereal culm transport surface of the supply chain 30 where the supply is adjusted. The tension spring 42a and the tension spring 42b are configured to be tensioned. The rear tension spring 42b
The tension stroke is made longer than the tension spring 42a on the front side so that the adjustment distance of the holding rod 31 can be made longer, so that it can follow the rearward movement of the chain 30 sufficiently.

[0016] The pre-cutting device 3 configured as described above.
Is a mowing lift cylinder 43 that expands and contracts by a hydraulic device.
Thus, as shown in FIG. 6 and FIG. 7, it is possible to select between a lower normal work position (see FIG. 6) and an upper high mowing work position (see FIG. 7). Next, each detecting means and the controller 27 using a microcomputer will be described mainly with reference to FIGS.

Firstly, the position detecting sensor S ₁ is potentiometer - data - the utilized reaper frame - frame reaper so can measure the height position of the preprocessing device 3 reaper detects the rotational angle of the arm 16 And provided at the base pivot point of the arm 16. The front grain culm sensor S ₂ -and the rear grain culm sensor S ₂ -are provided at a low position on the back side of the grain stalk raising device 4 and a lower position of the cover of the tip conveying lug 20 b extended to the rear. At the beginning and end of the transport path, the presence or absence of a transported grain culm is detected.

Then, the culm length detection sensor S_ThreeIs the grain culm
Provided at a relatively high position on the back side of the raising device 4,
The length of the culm can be detected. And Sen
S _FourAnd stock sensor S_FiveExtended to the back
The linking machine frame 4 located above the cover of the tip carrying lug 20b
4 to be suspended from the cereal conveying path
Is detected.

The controller 27 is a control means using a microcomputer. Basically, the sensors are connected to the input side to input the detection information and to set and store the information in advance. Motors M ₁ , M ₂ , M connected to the output side based on the input information from each sensor and the input information from each sensor.
_The control is performed while controlling the operation of ₃ .

That is, the controller 27 is connected to the input side.
Position detection sensor S₁, Front culm sensor S_Two-And rear culm
Sensor S_Two-, Culm length detection sensor S_Three, Head sensor S_FourWhen
Stock sensor S_Five, Not shown
S₆, Threshing clutch sensor S ₇, Vehicle speed sensor S₈It
Each is connected. Then, the controller 27 outputs
Gear control motor M on the side₁, Handling depth control motor M_Two,
Supply control motor M_ThreeAre connected.

First, the shift control motor M ₁ is controlled based on the detection information of the position detection sensor S ₁ , and when the pre-cutting device 3 rotates to the high cutting work position (the state shown in FIG. 7),
It is configured that the cereal stem raising device 4 is driven to the deceleration side when it is determined that the cereal stem raising device 4 is in the backward inclined state. The threshing depth control motor - motor -M ₂ is culm length detection sensor S _3, is controlled based on detection information of the tip sensor S ₄ and strains based sensor S _5, is basically the tip of grain稈穂portion New positions passing between the tip sensor S ₄ and strain based sensors S ₅ - Toraruzo - is configured to determine an optimum threshing depth position as emissions.

The supply control motor M_ThreeThe front grain
Culm sensor S_Two− And culm length detection sensor S _ThreeBased on the detected information
Is controlled according to the front culm sensor S_Two− Is in the detection state
There is a culm length detection sensor-S_ThreeIs disabled, the
Configuration that adjusts the supply adjusting device 14 to the deep handling side by operating
And The specific operation is described in the section of operation.
You.

Next, the operation will be described. First,
When the engine is started, the cutting clutch device and the threshing clutch device are turned on, and the running body 2 is operated to the forward running side while transmitting the rotating parts of the machine body, the controller 27
Is a harvesting clutch sensor S ₆ , a threshing clutch sensor S ₇ ,
Rising signal of each work start from a vehicle speed sensor S ₈ is inputted, starts control operation.

When the combine starts harvesting and threshing in this way, the culm in the field is replaced with the weeding rod 1 at the lower front end.
8, the seeds are raised by the action of the raising rugs 22 of the cereal stem raising device 4 from the lower down state to the upright state, and the root of the stock is cut by the reaper 17 so that Under the action of the wheeled body 19a and the endless endless band 19b, it is squeezed and is taken over by the front conveying device 20, and is conveyed sequentially and upward to the rear in a continuous state.

Then, the cereal culm is collected in a large number of rows, conveyed by the left and right front conveying devices 20 and merged at the rear, and successively transferred from the handling depth adjusting device 21 to the supply adjusting device 14 in a continuous state. The feed reaches the start end of the feed chain 9 and is supplied to the threshing apparatus 1. The grain culm is threshed by the rotating handling cylinder 10 while the spike is inserted into the handling chamber 11 and passed while the stem is being conveyed while being clamped by the feed chain 9. . Then, the threshing product reaches the lower sorting room and is subjected to the sorting wind and the action of the rocking sorting device to be sorted.

During the above operation, the control
La 27 reaper and preprocessing device 3 is input by the detection information from the position detection sensor S ₁ to be in the height of the normal working position, the shift control motor - holding the data -M ₁ to the position of normal speed Then, the grain stem raising device 4 is controlled. And
The controller 27 receives detection information from other sensors, that is, the front grain culm sensor S _2- , the rear grain culm sensor S _2- , and the culm length detection sensor S ₃ .

Then, the handling depth adjusting device 21 transmits the detection information from the head sensor S ₄ and the stock sensor S ₅ to the controller 2.
7, and based on the operation signal outputted from the controller 27, the handling depth control motor M ₂ is controlled and operated, and the handling depth is automatically adjusted via the connecting rod 29. I have. In this case, controller - La 27 determines that the most suitable threshing depth positions positions passing between the tip position pike sensor S ₄ and strain based sensors M ₅ of the transport culms,扱深in that position The adjustment control is performed so that the adjustment position of the adjustment device 21 is adjusted.

Next, when the traveling vehicle body 2 reaches the ridge of the field and cuts the headland, the cutting body is moved up and down in order to prevent the tip of the weeding rod 18 from colliding with the ridge rising at the end of the field. By extending the cylinder 43, the pre-cutting device 3 is raised from the normal working position in FIG. 6 to the high cutting work position shown in FIG. Hereinafter, the high mowing control will be described with reference to the flowchart of FIG.

First, with the cutting clutch sensor S ₆ , threshing clutch sensor S _7, and vehicle speed sensor S ₈ each in the ON state (during work), the cutting pre-processing device 3 is raised to a high cutting work position and the headland Move to reaping. At this time, controller - La 27, when the height position from the position detection sensor S ₁ is inputted as the detection information, the shift control mode - and outputs to drive a shift signal to the deceleration side to motor -M _1. Thus, the causes and transmission 5, as shown in FIG. 1, the shift control motor - transmission tension is automatically operated by a motor -M ₁ B - La 26 is actuated to the side to loosen the belt 25 shift flop - Li 24 The transmission from the drive pulley 23 is decelerated and transmitted to the lug 22 by decelerating and rotating the transmission lug 22.

In this way, the grain stem raising device 4 raises the lug 22 at a speed corresponding to the raising angle at which the tilt angle has changed to the backward tilt as shown in FIGS. Since it acts on the cereal stem, it is possible to prevent the culm from being excessively caused. In general, the raising angle of the cereal stem is determined by the raising rug 22
Is determined by the angle (direction) and the speed of the
In order to raise a grain with a constant degree of lodging, it is necessary to raise the stalk at a higher angle as the angle is closer to the upright position. Occurs.

The controller 27 includes a lower front culm sensor S ₂ -and an upper culm length detection sensor S ₃ .
When the fed inputs the detection information by detecting the culms have become the control of threshing depth adjusting device 21 only determines the long grain稈丈than the reference value (60cm), the upper culm length detection sensor S ₃ non When the detection information is input, the reference value (60cm)
It is determined that the grain length is shorter, and the control by both the handling depth adjusting device 21 and the supply adjusting device 14 is performed simultaneously.

Firstly, controller - La 27, when the detection information is input from the culm length detection sensor S _3, in the embodiment, the output 1, 5 / sec threshing depth control mode - threshing depth the data -M ₂ Side, the working depth adjusting device 21 is adjusted to a working side of about 15 cm deep to perform the work. Complete cutting high by the control operation described above, the rear culms sensor S ₂ - is completed by detecting that there are no more culms. Thereafter, the handling depth adjusting device 21 is turned off by about 12 c with a delay of a predetermined time.
Return to the shallow-hand side and return.

On the other hand, grain稈丈is extremely short, the non-detection information in a state in which the top does not reach the culm length detection sensor S ₃ Control -
If you enter La 27, controller - La 27 signals, respectively threshing depth control to adjust to the most deep threshing position and threshing depth adjusting device 21 and the delivery regulation apparatus 14 motor - motor -M ₂ and supply control motor - controlled by outputting the data -M _3. Therefore, the handling depth adjusting device 21 and the supply adjusting device 14 supply the extremely short cereal stem to the threshing device 1 controlled to the deepest handling position.

In this case, the supply control device 1 is controlled and controlled.
Numeral 4 inherits a very short cereal stem that is largely adjusted to the deep handling side from the end of the handling depth adjusting device 21, and further adjusts it to the deep handling side to supply it to the auxiliary feed chain 12. However, at this time, short culms whose roots do not reach the clamping position of the feed chain 9 are conveyed by the auxiliary feed chain 12, and all the culms are directly introduced into the handling chamber 11 from the supply side.

When one step of the cutting and threshing operation is completed as described above, the controller 27 sets the rear grain culm sensor S ₂
− Determines that the processing is completed by detecting that the grain culm has disappeared, and based on a certain time delay,
1 and the supply adjusting device 14 are returned to the shallow handling position. Numerical values described in the description of the above-described embodiments show one embodiment, and do not limit the scope of rights.

[0036]

According to the present invention, a mowing pretreatment device is provided at a front portion of a traveling vehicle body on which a threshing device is mounted so that the mowing pretreatment device can be freely moved up and down. An inclined grain stem raising device having an end portion located at the upper rear side is provided, and the grain stem raising device is equipped with an elevating transmission device for increasing and decreasing the elevating speed, and the elevating transmission device is When the pre-cutting device rises and reaches the high mowing work position, the speed is reduced from the normal working position, so that the raising lugs constituting the grain stem raising device are changed to the backward inclination. Is reduced by a speed corresponding to the raised angle and acts on the lodging grain. Therefore, even if it raises to a high cutting work position, there is little difference from the case where it is in a normal work position, and the raising lug has the characteristic which can be raised appropriately.

[Brief description of the drawings]

FIG. 1 is a side view of an embodiment of the present invention.

FIG. 2 is a block diagram showing an embodiment of the present invention.

FIG. 3 is a plan view of the embodiment of the present invention.

FIG. 4 is a side view of the embodiment of the present invention.

FIG. 5 is a plan view of the embodiment of the present invention.

FIG. 6 is an operational side view of the embodiment of the present invention.

FIG. 7 is an operation side view of the embodiment of the present invention.

FIG. 8 is a plan view of the embodiment of the present invention.

FIG. 9 is a plan view of the embodiment of the present invention.

FIG. 10 is a side view of the embodiment of the present invention.

FIG. 11 is a flowchart showing an embodiment of the present invention.

[Explanation of symbols]

DESCRIPTION OF SYMBOLS 1 Threshing device 2 Running body 3
Pre-cutting device 4 Grain stalk raising device 5 Raising transmission

Claims (1)

[Claims] 1. A cutting pretreatment device is provided at a front portion of a traveling vehicle body on which a threshing device is mounted so as to be able to freely move up and down, and the cutting pretreatment device has a starting end located at a lower front and an end terminating at an upper end. An inclined grain stem raising device positioned at the rear is provided, and the grain stem raising device is equipped with an elevating transmission for increasing and decreasing the elevating speed, and the elevating transmission is provided before the harvesting. A combine equipped with a high mowing control, wherein when the processing device rises and reaches the high mowing work position, the speed is reduced from the normal working position.