JPH057419A - Combine - Google Patents

Abstract

PURPOSE:To properly maintain threshing load and to sufficiently utilize treating ability of a thresher while preventing inconvenience caused by tackiness of drawn and treated material such as threshed grain in a selecting part of the thresher. CONSTITUTION:A combine provided with a speed changing means 100 to change speed of combine is equipped with a water content value detecting means 11 to discover a water content value alpha of threshed grains X and with a maximum speed checking means 101 of automatically changing and setting, based on the detected information of the water content value detecting means 11, a maximum speed VH changeable by the speed changing means 100 at a lower speed side when the water content value alpha is high than a speed when the water content value alpha is low.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a combine provided with a vehicle speed changing means for changing a vehicle speed.

[0002]

2. Description of the Related Art Conventionally, in the above combine, the threshing device is overloaded by operating the vehicle speed shifting means to adjust the amount of debris to the deceleration side when the load is excessive and to the acceleration side when the load is too low. Utilize the processing capacity of the threshing device as much as possible while suppressing feeding. Also, at that time, when the husks are moist, compared to when they are dry,
In consideration of the fact that the threshing load itself becomes large and the fluctuation amount of the threshing load due to changes in the culm planting density and vehicle speed also becomes large, the moisture value of the harvested husks is detected and based on the detected value. The maximum speed that can be changed by the vehicle speed changing means,
The water content value was automatically changed and set to be lower as it increased (Japanese Utility Model Laid-Open No. 61-22446). In this way, troubles such as engine stop due to overload were prevented.

[0003]

By the way, in the above-mentioned prior art, since the water content of the cutting culm is detected,
The threshing load can be prevented from becoming overloaded by suppressing the maximum speed during vehicle speed shifting based on the detected value. However,
Since it cannot be said that the moisture value of the cut husks and the moisture value of the treated products such as threshing grains that are treated in the threshing unit and sent to the sorting unit are completely the same, the handling process in the sorting unit is performed. There is a possibility that the above-mentioned conventional technique cannot appropriately deal with a problem such as clogging due to adhesion of an object.

The present invention has been made in view of the above circumstances, and an object of the present invention is to prevent problems such as clogging due to adhesion of a treated product such as threshing grains in a sorting section of a threshing device, It is to obtain a combine harvester that appropriately maintains the threshing load and fully utilizes the processing capacity of the threshing device.

[0005]

According to a characteristic structure of a combine according to the present invention, a moisture value detecting means for detecting the moisture value of threshed grains is provided, and the vehicle speed is determined based on the detection information of the moisture value detecting means. There is a maximum speed restraining means for automatically changing and setting the maximum speed that can be changed by the speed changing means to a lower speed side when the water content is large than when the water content is small.

[0006]

According to the characterizing feature of the present invention, when the moisture value of the threshed grains detected by the moisture value detecting means is large, the maximum speed control means allows the maximum speed changeable by the vehicle speed changing means to be on the low speed side. Therefore, the threshing device will not be overloaded by operating the vehicle speed changing means too high. In addition, the moisture value of the treated threshed grains is directly measured, and when the moisture value is large, the maximum speed that can be changed is suppressed to the low speed side, and the amount of cutting husks decreases. Accordingly, the amount of the treated products such as threshing grains that leaks to the sorting section in the threshing apparatus is reduced, and accordingly, the trouble such as the clogging of the treated products due to the adhesion is less likely to occur.

[0007]

According to the characterizing feature of the present invention, the occurrence of troubles in which the work is interrupted due to clogging of the processed material in the threshing device is reduced, and moreover, the threshing load can be appropriately maintained and the threshing device can be maintained. I tried to fully utilize the processing capacity,
As a whole, a combine excellent in operation, work efficiency and durability could be obtained.

[0008]

Embodiments of the present invention will be described below with reference to the drawings. First, the combine threshing device 1 will be described with reference to FIG. The threshing apparatus 1 includes a handling room A that accommodates a handling barrel 17 that handles and processes a harvested rod that is nipped and conveyed by a feed chain 16 from the front side of the body toward the rear side of the body.
And a swinging sorting plate 18 for sorting the leaked material from the handling room A and a sorting device B provided with a Karako 19 for sending sorting air. In the lower part of the handling chamber A, a receiving net 21 through which the threshing material leaks is provided along the lower outer peripheral portion of the handling barrel 17, and in the rear part of the receiving net 21, inside the handling chamber A. A dust delivery port 22 is formed for discharging the remaining threshed material.

The swing selection plates 18 are arranged in order from the front of the machine body to the rear thereof so as to be lined up in a Glen pan 23.
Each of the chaff sheave 24 and the straw rack 25 is provided. Below the chaff sheave 24, an auxiliary Glen pan 26 and a Glen Sheave 27 are arranged so as to be sequentially arranged in the front-rear direction. Each part of the gren pan 23 to the gren sheave 24 is fixed between a pair of left and right side plates 28, and is formed in a plate shape as a whole. Also, in the figure, 2
Reference numeral 9 is a Straw rack that acts on the processed material discharged from the dust port 22, 30 is a first-part collecting section that collects the threshed grains X leaking from the grain sieve 27 as the first piece, 31
Is a second product recovery for recovering the processed product in which the threshed grains X are mixed with the straw debris and the like falling over the end part of the Straw rack 25 and the end part of the Glen sieve 27 and returning it to the handling room A. It is a department.

A water content detecting means 11 for measuring the water content α contained in the threshed grains X is provided at the side of the first-most item collecting section 30 based on the electric resistance of the threshed grains X.
Although not described in detail, the mechanism is such that the threshed grains X collected in the first item collecting unit 30 are taken in one by one, sandwiched between a pair of rotating rollers which also serve as electrodes, and crushed, and between the electrodes. It is designed to measure electrical resistance.

The chaff sheave 24 is formed by a plurality of strip-shaped members 24a juxtaposed in the processing product transfer direction (left and right direction in the drawing). The strip-shaped members 24a are rotatably attached to the left and right side plates 28 with their upper ends serving as fulcrums while maintaining their parallel state. That is, the chaff sheave 24 adjusts the amount of the threshed grains X per unit time passing through the interval t by changing the interval t by changing the interval t by rotating the band plate member 24a. Then, the thickness of the threshing grains X deposited on the chaff sheave 24 can be changed and adjusted.

Further, as shown in FIGS. 2 and 3, the thickness of the threshing grains X deposited on the chaff sheave 24 is detected 2
As the individual contact type sheave sensors S, a front sheave sensor S3 and a rear sheave sensor S4 are attached to the receiving net 21 by using the support frame 32 in a state of being spaced from each other in the workpiece transfer direction. Each of the sensors S3 and S4 has substantially the same structure. The sensors S3 and S4 have sensor bars 33a and 33b that are swingably suspended around the horizontal axis and a voltage corresponding to the swing angle of the sensor bars 33a and 33b. And a potentiometer (not shown) for outputting. However, the sensor bar 33b of the rear sheave sensor S4 is formed in the shape of a rod having a substantially rectangular cross section, while the sensor bar 33a of the front sheave sensor S3 is wide and
The front side, which comes into contact with the object to be processed, is formed in a shape inclined by a set angle θ toward the rear side in a plan view.

In addition, in the handling chamber A, the handling amount increases toward the inlet side (to the left in the drawing), and the amount of the substances leaked from the handling chamber A onto the swing selection plate 18 accordingly. However, the inlet side of the handling room A is larger than the outlet side. Therefore, at the location where the front sheave sensor S3 is located below the inlet side of the handling chamber A, there is a tendency that the thickness of the processed material becomes thicker than that where the rear sheave sensor S4 is located.
Further, since the handling cylinder 17 is driven to rotate about the longitudinal axis to handle the grain rod, at the location where the front sheave sensor S3 is attached, as shown in FIG. 4, the tip side in the machine lateral direction (in the figure). In the above), the amount of processed products leaking through the receiving net 21 is larger than that of the stocker side, so that the thickness of the threshed grains X which is the processed product on the rocking sorting plate 18 is biased in the lateral direction of the machine body. The condition tends to be deposited. Therefore, the sensor bar 33a of the front sheave sensor S3 inclined rearward
Is used to even out the uneven distribution. As a result, the rear sheave sensor S4 can detect the thickness of the threshing grain X in which the unevenness of the accumulation state is leveled, and thus the detection error can be reduced. Although not described in detail, the sensor bars 33a and 33b are provided in a state of being urged to return to the front side. Since the front sheave sensor S3 has a wider contact surface with the processed object than the rear sheave sensor S4, the return urging force of the front sheave sensor S3 is set to be large.

Next, the control configuration will be described with reference to FIG. The output of the engine E is transmitted to each of the threshing device 1 and the mowing unit 2 as working devices, and is also transmitted to the transmission 3 for traveling, and the output of the transmission 3 is
It is adapted to be transmitted to the mission section 5 of the crawler traveling device 4. However, although not described in detail, the transmission between the respective parts is performed by a belt or the like. Further, a rotation speed sensor S1 for detecting the rotation speed of the engine E is provided, and the transmission 3 is transmitted to the input device 5A of the traveling unit 4 or the mission unit 5 which rotates in conjunction with it.
Speed sensor S2 that detects the vehicle speed based on the output speed of the vehicle
Is attached to the mission unit 5.

In FIG. 1, 7 is a lever for manual operation of the transmission 3, 8 is an electric motor as an operating actuator for automatically decelerating the transmission 3, and the manual operation It is linked to a linking mechanism 9 between the lever 7 and the transmission 3 via a friction holding mechanism 10. In other words, the manual gear shifting operation is prioritized over the gear shifting operation by the electric motor 8, and the gear shifting operation can be automatically performed.

Further, a control device 6 utilizing a microcomputer is provided, on which the rotation speed sensor S1, the vehicle speed sensor S2 and the two sheave sensors S3, S4 are provided.
The detection signal from the moisture value detecting means 11 for measuring the moisture value α contained in the threshed grains X and the target moisture value setter 12 for inputting the target set moisture value I are It is connected. Further, the control device 6 drives the electric motor 8 and also drives an alarm buzzer 13 and an alarm lamp 14 as means for warning the operator when the detected water content value α is larger than the set water content value I. It is supposed to do.

Then, in the control device 6, a vehicle speed change control for controlling the vehicle speed based on the detection information of the two sheave sensors S3, S4 so that the thickness of the threshing grain X is maintained within a set range. Means 100 and the moisture value detection means 11
The maximum speed VH that can be changed by the vehicle speed changing means 100 is automatically changed to a lower speed side when the water content value α is higher than when the water content value α is small based on the detection information of The speed check means 101 is configured.

Next, a specific control flow of vehicle speed control will be described.
It will be described with reference to FIG. First, the water content detecting means 1
After detecting the water content value α of the threshed grain X by 1, the maximum speed VH corresponding to the water content value α stored in the memory in the maximum speed control means 101 is read. Here, the value of the maximum speed VH in the memory is set to decrease as the water content value α increases. After this,
The two-stage set moisture values I ₁ and I ₀ (where I ₁ > I ₀ ) input from the target moisture value setter 12 are compared with the detected moisture value α. In addition, the set moisture values I ₁ and I _{0 in} the above two stages
In setting the above, the processing capacity of the threshing device 1 is taken into consideration. That is, when the set water content value I ₁ is larger than the set water value I ₁ , the processing capacity cannot cope with the set water value I ₀ or smaller. If the value is limited to a certain value or less, the processing becomes possible.

As a result of the comparison, the detected moisture value α
Is larger than the larger set moisture value I ₁ ,
When the vehicle speed is set to 0, the harvesting is stopped, and the operator is informed by the alarm buzzer 13 and the alarm lamp 14.

Further, the set water having the larger detected water content value α
Minute value I₁ And the smaller set moisture value I ₀For intermediate values of
The current vehicle speed V is detected by the vehicle speed sensor S2.
However, the current vehicle speed V exceeds the set maximum speed VH.
When decelerating, decelerate until the set maximum speed VH or less
To do. After that, the two sheave sensors S3 and S4 are activated.
The two sheave sensors S3 and S4 are turned on and off.
By detecting the state, the thickness of the threshing grain X is within the set proper range.
(When S3 is OFF and S4 is ON)
If it is less than the constant proper range (when S4 is OFF), set the vehicle speed
By increasing the speed and increasing the amount of grain rods cut per unit time,
The thickness of the threshing grains X on the rocking sorting plate 18 is within a proper setting range.
Will be maintained within the setting range.
If it is thicker (when S3 is ON and S4 is ON), reduce the vehicle speed.
Speed up and reduce the amount of crop rods cut per unit time,
The thickness of the threshing grains X on the rocking sorting plate 18 is within a proper setting range.
Will be maintained within.

When the detected water content value α is smaller than the smaller set water content value I ₀ , the current vehicle speed V is detected and
No deceleration operation is performed to make this lower than the set maximum speed VH. Then, as described in the case of the intermediate value,
The vehicle speed control is performed by determining the thickness of the threshing grain X on the swing selection plate 18 based on the detection signals of the two sheave sensors S3 and S4.

[Other Embodiments] In the above embodiment, when the detected water content value α is larger than the larger set water content value I ₁ , the vehicle speed is set to 0 and the cutting operation is stopped.
It is not necessary to do so, and the operator may be warned by the alarm buzzer 13 and the alarm lamp 14. Also at this time,
An indicator may be provided so that an operator can confirm the value of the detected water content value α.

The set moisture value I input from the target moisture value setter 12 can be finely set in two or more steps. Which set moisture value I is used to suppress the set maximum speed VH. The value can be set from the value of.

Further, in the above-mentioned embodiment, in order to detect the load state of the threshing apparatus 1, the threshing grains X accumulated on the rocking sorting plate 18 which sorts the processed substances leaking from the handling chamber A. The thickness is detected by two contact type sheave sensors S3 and S4,
Although the vehicle speed is operated by the detection signal, a rotation speed sensor S1 for detecting the rotation speed of the engine E may be used in addition to this in order to detect the load state of the threshing device 1. That is, the rotation speed of the engine E becomes lower as the load becomes heavier, and is inversely proportional to the load. Therefore,
When the rotation speed detected by the rotation speed sensor S1 becomes lower than the set rotation speed corresponding to the set value for judging the magnitude of the engine load, the engine load is judged to be larger than the set value and the deceleration operation is performed. On the contrary, when the engine speed becomes higher than the set speed, it is determined that the engine load is smaller than the set value and the speed-up operation is performed. Of course, even in this case, the water content value α of the threshed grain X is detected, and the restraining operation is performed at the set maximum speed VH at which gear shifting is possible.

Further, the vehicle speed is changed by the lever 7 for manual operation.
It is also possible to manually perform the operation, and, of course, in this case as well, the moisture value α of the threshed grains X is detected, and the suppressing operation is performed at the variable maximum speed VH. To this end, for example, a lock mechanism is provided on the manual operation lever 7, and means for forcibly limiting the operation amount is provided.

It should be noted that reference numerals are added to the claims for convenience of comparison with the drawings, but the present invention is not limited to the structures of the accompanying drawings by the entry.

[Brief description of drawings]

FIG. 1 is a block diagram of a control configuration.

FIG. 2 is a schematic side view of a threshing device.

FIG. 3 is a plan view showing the arrangement of sheave sensors.

FIG. 4 is a front view of a front sheave sensor.

FIG. 5 is a front view of a rear front sheave sensor.

FIG. 6 is a flowchart of control operation.

[Explanation of symbols]

 11 Moisture value detecting means 100 Vehicle speed shifting means 101 Maximum speed restraining means α Moisture value VH Maximum speed X Threshing grains

Claims (1)

Claims: 1. A vehicle speed shifting means (1) for shifting a vehicle speed.
00) is provided, and a moisture value detecting means (11) for detecting the moisture value (α) of the threshed grains (X) is provided, and the moisture value detecting means (11) uses the detection information. Based on the vehicle speed shifting means (1
00) automatically changes and sets the maximum speed (VH) at which the speed can be changed to a lower speed side when the water content value (α) is larger than when the water content value (α) is small ( 101) is provided.