JPS6368020A - Handling depth control apparatus of combine - Google Patents

Abstract

(57) [Abstract] This bulletin contains application data before electronic filing, so abstract data is not recorded.

Description

[Detailed Description of the Invention] fa) Industrial Application Field The present invention relates to a combine harvester equipped with a traveling device and a threshing device, which runs in a farm to reap grain, and separates and harvests the grain from the grain culm. The present invention relates to a combine harvester that automatically controls the clamping position of grain culms while conveying the harvested grain culms to a threshing device.

(b) Summary of the Invention To summarize, the combine harvester handling depth control device according to the present invention is designed to prevent abnormal loads and losses in the threshing device caused by speed changes during reaping work. A traveling distance detecting means for detecting the distance traveled is provided, and after the start of reaping work, the traveling distance detecting means detects a corresponding distance while moving the grain culm to the ear tip detecting means, and then the cutting control is performed. By this, the conveying means is controlled to a position suitable for the length of all the harvested grain culms.

(C1 Prior Art) In the Nbine, a handling barrel with handling teeth is rotated in a handling chamber to separate grains from the sugar part.Therefore, in order to reduce the rotational resistance of the handling barrel as much as possible, only the sugar part is placed in the handling chamber. In addition, in order to eliminate unhandled grains, the entire grain must be guided into the handling room.However, even for the same crop in the same farmland, the length of the grain culm varies; In order to efficiently and reliably separate grains from the sugar part of all crops, it is necessary to maintain a constant distance from the conveyance means to the sugar part.Therefore, a tip detection device detects the tip of the harvested grain culm. and a clamping position changing means for changing the clamping position of the grain culm in the transport means, and the clamping position of the transport means is changed according to the length of the grain culm detected by the ear tip detection means, and the clamping position of the transport means is changed from the transport means to the sugar section. Since it is provided apart from the position of the sub-number and the stock head detection means, there is a time delay until the harvested grain culm reaches the ear tip detection means immediately after the start of the reaping operation.Therefore, the stock head detection means If the grain removal control is performed immediately upon detecting the grain culm to be harvested, the grain tip detection means will not be able to detect the grain stalk tip, and the conveying means will be moved to the deep handling side.In this state, the grain culm will be removed. When the threshing equipment is transported, the load on the threshing equipment increases, which may reduce work efficiency and damage the equipment.

For this reason, in the conventional combine harvester handling depth control device, the removal control is performed after the timer has counted a predetermined time. When a predetermined time measured by a timer has elapsed after the stock head detection means detects the grain culm, the harvested grain culm reaches the ear tip detection means, the length of this grain culm is detected, and removal control is started. I try to do that.

(d) Problems to be Solved by the Invention In the conventional combine harvester handling depth control device described above, a delay time is provided after the start of the reaping operation until the removal control is performed, and the harvested grain culm is detected by the ear tip detection means. I'm trying to wait for it to arrive. However, at the start of a reaping operation, the traveling speed of the combine may change due to an operator's selection or a change in running resistance, and such a change in traveling speed causes a difference in the distance that the combine moves within a certain period of time.

Since the amount of crops harvested is proportional to the distance traveled by the combine,
Since the conveyance amount of the cut grain culms must also change linearly with the traveling distance, in a combine harvester, the operation of the conveyance means is generally synchronized with the operation of the traveling device. For this reason, even if the time measured by the timer as the delay time is the same, the conveyance distance of the grain culm changes due to a change in the traveling speed, and there are cases where appropriate extraction control is not performed. For example, when the traveling speed is high, the first grain culm passes the ear tip detection means before the timer measures the predetermined time, and the removal control is not performed for these grain culms. Furthermore, if the traveling speed is slow, when the timer has counted a predetermined time, the grain culm has not yet reached the ear tip detection means, and the removal control is performed in a state where the length of the grain culm cannot be detected. As described above, in the conventional combine harvester handling depth control device, the start timing of the removal control was determined by time delay control using a timer, which had the drawback of not being able to respond to changes in the traveling speed of the combine harvester.

An object of the present invention is to determine the start timing of the harvester control based on the distance traveled by the combine harvester after the start of the reaping operation, thereby solving the conventional problems and ensuring proper extraction control from the beginning of the reaping operation. It is an object of the present invention to provide a processing depth control device for a combine harvester that can improve the efficiency of threshing work and prevent damage to the device.

+e1 Means for Solving the Problem The handling depth control device for a combine harvester of the present invention includes a stock head detection means for detecting the presence or absence of a grain culm to be reaped near the cutting blade, and a stock head detection means for detecting the length of the reaped grain culm. A detection means, a conveyance means that clamps the harvested grain culm and conveys it to the threshing device in synchronization with the traveling device, and a clamping position control means that changes the clamping position of the conveyance means according to the detection result of the ear tip detection means. The handling depth control device for a combine includes a traveling distance detecting means for detecting the distance traveled by a traveling device after the stock detecting means detects the crop at the start of threshing work, and a traveling distance detecting means for detecting the distance traveled by the traveling device from the stock detecting to the ear tip. The present invention is characterized in that a control activation means is provided for enabling the clamping position control means after detecting a corresponding distance to the detection means.

(f) Function According to the present invention, (1) When the stock head detection means detects the grain culm to be harvested at the start of the threshing operation, the travel distance detection means detects the distance traveled by the combine harvester.

(2) After the start of the threshing operation, when the combine harvester travels a corresponding distance from the stock head detection means to the ear tip detection means, the traveling distance detection means detects this.

■The traveling device and the conveying means operate in synchronization, and when the traveling distance detecting means detects the distance from the stock head detecting means to the ear detecting means, the grain stalks held between the conveying means also move the same distance. .

■When the traveling distance detecting means detects the above-mentioned distance, the clamping position control means is enabled by the control activation means, and the clamping position of the grain culm is controlled by the transporting means.■Therefore, the grain culm clamped by the transporting means detects the tip of the grain. When the means is reached, the clamping position control means is activated by the control activation means.

(gl Embodiment FIG. 2 is a schematic side cross-sectional view showing the configuration of a combine harvester equipped with a handling depth control device according to an embodiment of the present invention.

The combine 11 is equipped with a crawler 13 below. This crawler 13 is given driving force by drive wheels 28 and causes the combine 11 to travel.

The rotation of an output shaft (not shown) of the engine 26 is transmitted to the drive wheels 28 via a transmission 27 . A rotating shaft sensor s3 is provided on a first shaft (not shown) of the transmission 27, and detects the rotation speed thereof. This rotational axis sensor S3 is constituted by a photoink, detects a slit in a slit plate fixed to the first axis, and outputs a detection signal. A reaping section 12 is provided at the front of the combine 11.

This reaping part 12 is equipped with auxiliary teeth 25, and the combine I
Harvest the crop 4o located in front of I to the base of the plant. The reaping unit 12 is provided with a stock sensor 22 that detects the presence or absence of crops to be reaped. This stock price sensor is stock stock detection means. Furthermore, a lower tip sensor S1 and an upper tip sensor S2 are provided at the upper part of the reaping section 12. The lower ear tip sensor S1 and the upper ear tip sensor s2 are ear tip detection means for detecting the ear tip of the harvested grain culm.

The combine 11 is equipped with a threshing device 10 inside. This threshing device 10 includes a handling chamber 16 rotatably equipped with a handling barrel 15 having a plurality of handling teeth 15a, a grain handling chamber 17, a swing sorting device 18, and a seminal vesicle auger 19.
It is made up of. The rear part of the combine 11 is open and serves as a discharge part 21.

Inside the combine 11, there is a threshing device l from the reaping section 12.
A conveyor chain 1 and a feed chain 14 are provided between the conveyor chain 1 and the feed chain 14 passing through O and reaching the discharge section 21 . The conveyance chain 1 and the feed chain 14 are conveyance means, and both sandwich the harvested grain culms.

With the above configuration, the length of the grain culm cut by the cutting blade is detected by the lower ear tip sensor S1 and the upper ear tip sensor S2, and then guided to the threshing device 10 by the conveyance chain 1 and the feed chain 14. Threshing device I
In O, the handling teeth 15a are brought into contact with the sugar part of the grain culm to separate the grain culm into grains and culm waste. The grains and culm waste separated from the grain culm fall downward, and are mechanically sorted by a swinging sorter 18 and culm waste 17? : Receives wind sorting. Through this sorting, only the grains are harvested as fine grains by the fine grain auger 19. On the other hand, the grain culm from which the grains have been separated is discharged to the outside from the discharge section 21 together with culm waste.

FIG. 1 is a schematic diagram showing the main parts of the combine p.

One end of a link 6 is attached to the conveyance chain 1. The other end of the link 6 is supported by one end of the actuator 5. The other end of the actuator 5 is fixed to the rotating shaft 4. The rotation of the extraction motor 2 is transmitted to the rotating shaft 4 via the gear box 3. Further, the rotation of the rotating shaft 4 is detected by a motor volume 7. These extraction motor 2, gear box 3, rotating shaft 4, actuator 5
and link 6 constitute the clamping position control means of the present invention.

The extraction motor 2 can rotate in both forward and reverse directions, and when the extraction motor 2 rotates in the direction of arrow C or D, the rotation shaft 4
also rotates in the direction of arrow C or D. This rotation of the rotation shaft 4 in the direction of arrow C or D is caused by the actuator 5 moving from the link 6.
is transmitted to the conveyor chain l via. As a result, the conveyor chain 1 moves in the direction of arrow A or B, and the crop 40
The clamping position changes to P, -P3. That is, when the extraction motor 2 is rotated in the direction of arrow C, the conveyance chain 1 moves in the direction of the arrow C, and the distance between the tip of the crop 40 and the nipping position of the conveyance chain 1 becomes shorter. Conversely, when the extraction motor 2 is rotated in the direction of the arrow, the conveyor chain 1 moves in the direction of the arrow B.
The distance between the tip of the crop 40 and the clamping position becomes longer. Based on the above, the removal motor 2 is rotated in the direction of arrow C during shallow handling control, and the removal motor 2 is rotated in the direction of arrow C during deep handling control. The motor volume 7 detects the rotation angle of the rotary shaft 4 and limits its rotation range to a movable range of the conveyor chain l.

FIG. 3 is a block diagram of the control section of the combine harvester.

Detection data from the lower tip sensor S1, the upper tip sensor S2, the stock sensor 22, the motor volume 7, and the rotation axis sensor S3 are input to the C, PU 31 via the I10 interface 34. RAM connected to CPU31
33 memory area M1 is assigned to a counter C, which counts the detection data of the rotation axis sensor S3. C.P.
A ROM 32 connected to U31 stores a program for calculating control data for the extraction motor 2 based on input detection data. The CPU 31 calculates control data according to this program and outputs it to the motor driver 35 via the I10 interface 34. RAM
A part of 33 is allocated to a working area when calculating this control data.

FIGS. 4(A) and 4(B) are flowcharts showing the operation of the handling depth control device of the combine harvester.

When the threshing operation is selected by the operator's operation, the threshing switch 24 is turned on, and other control conditions are satisfied (nl), it is checked whether the stock sensor 22 has detected a grain culm to be harvested (n2). ). Stock sensor 2
Memory area M1 of RAM 33 until 2 detects a grain culm.
The counter C assigned to is reset and the pick-out control is stopped (n2→n7→n8→n2).

When the stock sensor 22 is turned on, the counter C is turned on (n3), and a check is made to see if the control conditions are satisfied (n4). If the control conditions are satisfied, it is determined whether the contents of the counter C have exceeded the reference value A stored in the ROM 32 (n5). This reference value A is determined when the rotary shaft sensor S
This is the number of data output from 3. If the content of counter C is less than the reference value A, no removal control is performed (n5
→n8). When the content of the counter C becomes equal to or greater than the reference value A, the removal control is performed (n5→n6).

As shown in FIG. 4(B), the extraction control performed here is such that when only the lower tip sensor S1 is on, no output is made to move the conveyor chain 1, and the conveyor chain 1 is stopped (n
11 → n 12 → n 14) , lower tip sensor S
, and upper tip sensor S2 are both on, shallow handling control is performed to move the conveyor chain 1 in the direction of arrow A shown in FIG. 1 (n11→n12→n13). When both tip sensors S1 and S2 are off, deep handling control is performed to move the conveying chain l in the direction of arrow B shown in FIG. 1 (n11→n15→n16). If only the upper tip sensor S2 is on, a warning is given as a result of clogging (n11→n16→n17).

In the above, 05 corresponds to the traveling distance detecting means of the present invention together with the rotation axis sensor S3, and n6 corresponds to the control starting means of the present invention. As described above, according to this embodiment, the rotation of the first shaft of the transmission 27 is detected by the rotating shaft sensor S3, and the travel distance of the combine harvester 11 is determined. This running distance is the stock sensor 22 and the tip sensor S+, S.
When the distance between the two and z matches, the extraction control is started. In this way, since the start timing of the removal control is determined by the traveling distance based on the rotation of the transmission 27 with which the conveyor chain 1 is synchronized, the first grain culm is always detected by the ear tip sensors S1 and S2 regardless of the traveling speed of the combine harvester 11. When the position is reached, extraction control can be started.

In this embodiment, a photo ink club and a counter are used as the traveling distance detecting means, but the traveling distance may be directly detected using a rotation speed detecting means, a timer, or the like.

(h) Effects of the Invention According to this invention, the traveling distance of the combine harvester after the stock detection means detects the crop at the start of threshing work can be detected by the traveling distance detecting means, and the detection result of this traveling distance detecting means is used as a reference. The start timing of the removal control can be determined by

Further, the distance between the stock head detection means and the tip detection means, which is a reference in the control activation means, remains unchanged regardless of the traveling speed, so that the start timing of the removal control can always be made appropriate. Therefore, the maximum depth from the grain culm at the beginning of the reaping operation can be appropriately controlled, improving the efficiency of the threshing operation and preventing damage to the device.

[Brief explanation of drawings]

FIG. 1 is a schematic diagram showing the main parts of a combine harvester equipped with a handling depth control device according to an embodiment of the present invention, and shows a clamping position control means. Fig. 2 is a schematic side cross-sectional view of the combine, Fig. 3 is a block diagram of the control section of the combine, and Fig. 4 is a schematic side cross-sectional view of the combine.
Figures (A) and (B) are flowcharts showing the operation of the handling depth control device included in the combine harvester. ■-Conveyance chain, 2-Extraction motor, 26-Engine, 27-Transmission, 28-Drive wheel, S-1 lower tip sensor, S2-upper tip sensor, S3-rotating shaft sensor.

Claims (1)

[Claims] (1) Stock head detection means for detecting the presence or absence of a grain culm to be reaped near the mower blade, ear tip detection means for detecting the length of the reaped grain culm, and a head detection means for pinching the reaped grain culm and synchronizing with the traveling device. A combine harvester processing depth control device comprising: a conveying means for conveying the grain to the threshing device; and a clamping position control means for changing the clamping position of the conveying means according to the detection result of the ear detection means. a traveling distance detecting means that detects the distance traveled by the traveling device after the means detects the crop; and a clamping position controlling means that detects a distance corresponding to the distance between the plant base detection and the ear tip detection means. A combine harvester handling depth control device comprising: control starting means for enabling;