JP3359812B2 - Combine - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION The present invention relates to a transporting device for transporting cut culms to a threshing device.
A handling depth adjusting unit that adjusts the handling depth of the harvested grain culm by the threshing device by changing the support position of the harvested grain culm in the culm length direction, and a handling depth adjustment location by the handling depth adjusting means. At a position on the lower side in the conveying direction, a pair of head detecting means arranged side by side at a predetermined interval in the culm length direction so as to detect a head passage position of the harvested grain culm conveyed by the conveying device, and the head detecting means Depth control means for controlling the operation of the operating actuator of the depth control means so that only the head detection means on the stock side detects the head based on the detection information from The present invention relates to a combine equipped with an alarm operating means for operating an alarm device when a state in which any of the detecting means detects a head continues for a predetermined time.

[0002]

2. Description of the Related Art In a combine as described above, if both of the ear tip detecting means on the tip side and the stock tip side detect the ear tip of the harvested grain culm conveyed by the conveying device, the detection information is obtained. Based on the, the handling depth control means determines that the handling depth adjustment means has been displaced too much to the deep handling side,
A state in which only the head detecting means on the stock side detects the head (a state in which the handling depth of the harvested grain culm by the threshing device becomes an appropriate handling depth)
The operation of the operating actuator of the handling depth adjusting means is controlled so that the handling depth adjusting means is displaced toward the shallow handling side. If none of the head-side and stock-head-side head detecting means has detected the head of the harvested cereal culm conveyed by the conveying device, the handling depth control means based on the detection information. The operation of the operating actuator of the handling depth adjusting means is determined such that the handling depth adjusting means is excessively displaced toward the shallow handling side, and only the tip detecting means on the stock side detects the tip. Is controlled to displace the handling depth adjusting means toward the deep handling side. That is,
By the control operation of the handling depth control means based on the detection information from both the tip side and the stock tip side detection means, the handling depth of the harvested grain culm by the threshing device can be automatically adjusted to the appropriate handling depth. And, due to this, the handling depth of the harvested grain culm by the threshing device is caused by too deep handling,
It is possible to avoid the inconvenience that the threshing equipment such as cut straw increases in the threshing device and adversely affects the threshing sorting process, and the power consumption in the threshing device becomes unnecessarily large.
It is possible to avoid the disadvantage that the threshing device causes too many unhandled portions, which is caused by the handling depth of the harvested grain culm by the threshing device being too shallow.

However, if a floating straw is generated near the tip detecting means on the tip side, in fact, only the tip detecting means on the stock side detects the tip of the harvested grain culm (the cutting grain by the threshing device). The culm has a proper handling depth.)
Despite this, the tip detecting means on the tip side erroneously detects the floating straw generated in the vicinity as the tip of the harvested grain culm, and both the tip side and the stock tip side Since the head is in the state of detecting the head, based on the detection information, the handling depth control means, as described above, the handling depth adjusting means such that only the head-of-stock side detecting means detects the head. Is displaced to the shallow-hand side, and despite the adjustment operation, the state in which both the head-side and stock-source-side both-head-detecting means continue to detect the head is continued. The adjusting means reaches the shallowest handling position, which causes a problem that a large number of unhandled portions occurs in the threshing apparatus.

Therefore, conventionally, in order to avoid the above-mentioned inconvenience that the handling depth adjusting means reaches the shallowest handling position due to the occurrence of floating straws and a large amount of unhandled portions is generated, the tip side and the tip side have to be avoided. If the state in which both of the spike tip detecting means on the stock side detect the spike continues for a predetermined time, the spike detection by the spike tip detecting means on the spike side may cause an erroneous detection due to the influence of floating straw generated in the vicinity. It is provided with alarm actuation means for judging that there is a possibility, and operating a warning device based on the judgment to notify a worker of the possibility of occurrence of a floating stirrer. Inspection and maintenance near the tip detection means were performed.

Incidentally, it is a matter of course that the head detection duration time (predetermined time) of the both head detection means, which is a criterion when the alarm actuating means determines the possibility of occurrence of floating straw, is controlled by the handling depth control means. The operation depth is set to a time shorter than the time required for the handling depth adjusting means to reach the shallowest handling position.

[0006]

However, in the above prior art, since the length of the grain culm of the crop to be harvested is not taken into consideration, the crop to be harvested is a long culm crop exceeding 130 cm. Both the head-side and the head-of-stock-side detecting means actually detect the head of the long-culm crop, and based on the detection information, the handling depth control means only the head-of-stock-side detecting means. Despite displacing the handling depth adjusting means to the shallow handling side so as to be in a state for detecting the tip, if a state occurs in which the actual tip detection continues for a predetermined time, the alarm actuating means: The tip detection by the tip detection means on the tip side, despite the fact that there is no floating straw near the tip detection means on the tip side,
It has been determined that there is a possibility of erroneous detection due to the influence of floating straws generated in the vicinity thereof, and there is a problem that the alarm device is activated.

[0007] By the way, in order to avoid the above inconvenience,
When harvesting long culm crops, it is conceivable to switch the alarm device to the function stop state in advance by manual setting operation, but in this case, when harvesting short culm crops, manual setting operation Therefore, there is a risk that the operator may forget to switch the alarm device to the functional state in advance, and if the operator forgets to switch the alarm device to the functional state, the alarm is activated even though the alarm actuating means detects the occurrence of floating straw. A disadvantage arises in that the device cannot be operated.

SUMMARY OF THE INVENTION It is an object of the present invention to enable a high-precision alarm operation by a high-precision alarm operation means capable of automatically preventing a malfunction of an alarm device occurring when a crop to be harvested is a long-culm crop. is there.

[0009]

In order to achieve the above object, according to the first aspect of the present invention, the mowing is carried out at a location on the way of the transporting device which transports the harvested culm to the threshing device. A handling depth adjusting means for changing the supporting position of the grain culm in the culm length direction to adjust the handling depth of the harvested grain culm by the threshing device, and a conveying direction more than a handling depth adjusting point by the handling depth adjusting means. At the lower side, a pair of tip detecting means arranged side by side at a predetermined interval in the culm length direction so as to detect a tip passing position of the harvested grain culm carried by the carrying device, and A handling depth control means for controlling the operation of an operating actuator of the handling depth adjusting means so that only the tip side detecting means on the stock side detects the tip based on the detection information; Any of In but combine state for detecting the tip is equipped with an alarm actuating means for actuating an alarm device if it is continued for a predetermined time, provided with a position detecting means for detecting the adjustment position of the threshing depth adjusting means,
Activating the alarm device when the position detection unit detects that the handling depth adjustment unit is located within a predetermined area on the shallow handling side within the handling depth adjustment range. It was configured not to let it.

[0010] According to the first aspect of the present invention, the alarm actuating means keeps the position even if the state in which both of the spike-side detecting means on the spike-side side and the spike-side detecting means detect the spike continues for a predetermined time. The alarm device is activated only when the detection depth detecting means detects that the handling depth adjustment means is located outside the predetermined area on the shallow handling side within the handling depth adjustment range. The alarm device is not activated in a state where it is detected that the depth adjusting means is located in a predetermined area on the shallow handling side within the handling depth adjusting range. In other words, the alarm activation means
Even though the crop being harvested is located within the predetermined area on the shallow handling side within the handling depth adjustment range, the tip detection means on the tip side detects the tip. Only when the crop is a long culm crop, the alarm device is not activated, and since the crop to be harvested is a long culm crop, both of the spike tip detection means on the tip side and the stock side are not used. Although the actual detection of the ear of the harvested grain culm, the alarm activation means judges that the tip detection by the tip detection means on the tip side may be erroneous detection due to the effect of floating straw, and gives an alarm. The inconvenience of operating the device can be automatically avoided.

Therefore, it is possible to perform a floating straw alarm operation by a high-precision alarm operation means capable of automatically preventing a malfunction of an alarm device that occurs when a crop to be harvested is a long-culm crop.

According to the second aspect of the present invention,
In addition to the first aspect of the present invention, the handling depth control means is configured to stop the adjustment operation of the handling depth adjustment means to the shallow handling side in accordance with the operation of the alarm device.

According to the second aspect of the present invention, the alarm actuating means judges that the tip detection by the tip detecting means on the tip side may cause erroneous detection due to the influence of a floating straw generated in the vicinity thereof and issues an alarm. Between the time the device is activated and the time when the operator checks and maintains the vicinity of the tip detection means, the handling depth control means displaces the handling depth adjustment means to the shallow handling side where more unhandled residue occurs. The inconvenience caused by this can be avoided.

[0014] Accordingly, a high-precision alarm operation means capable of automatically preventing a malfunction of the alarm device when the crop to be harvested is a long-culm crop can be automatically activated, and a floating straw alarm operation can be performed with the occurrence of the floating straw. The resulting unhandled threshing equipment can be minimized.

According to the third aspect of the present invention,
In addition to the first or second aspect of the present invention, the handling depth control means is configured to position the handling depth adjustment means within a predetermined area on the shallow handling side when the control operation is started.

According to the third aspect of the present invention, it is possible to eliminate the trouble of manually positioning the handling depth adjusting means within a predetermined area on the shallow handling side when the control operation by the handling depth control means is started. There is no inconvenience of forgetting the operation. By the way, when the control operation by the handling depth control means is started, the handling depth adjusting means is located in the predetermined area on the shallow handling side because the crop to be harvested is within the handling depth adjustment range. Even if the crop is a long culm crop in which the tip is detected by the tip detection means on the tip side even though it is located in the predetermined area on the shallow handling side, the control operation by the handling depth control means is started. If the handling depth adjustment means is positioned in the deep handling side area outside the predetermined area on the shallow handling side from time to time, the position detection means will determine that the handling depth adjustment means is on the predetermined Detecting that the crop is located outside the area, and based on the detection information, the alarm actuation means determines that the crop being harvested is a short culm crop, State in which any of the head detection means is detecting the head This is because inconvenience such actuate the alarm device in accordance with the being continued for a predetermined time.

Therefore, it is possible to automatically and more reliably prevent the alarm device from malfunctioning when the crop to be harvested is a long-culm crop, while reducing the labor required for controlling the handling depth. Floating straw alarm operation can be performed by a more accurate alarm operation means.

[0018]

Embodiments of the present invention will be described below with reference to the drawings.

FIG. 1 shows a front side of the combine, which is equipped with a pair of right and left crawler-type traveling devices 1 and a cutting section at the front of a traveling machine body 3 on which a threshing device 2 is mounted. 4 is connected so as to be able to swing up and down around a horizontal axis P. The reaper 4
Raising device 5 that raises planted grain culm as it travels, mowing device 6 that cuts the root of raised planted cereal culm, harvested planted cereal culm (cutted cereal culm) and moves backward The auxiliary transport device 7 for transporting, the vertical transport device 8 for gradually changing the harvested grain culm received from the auxiliary transport device 7 from the standing position to the sideways position and transferring it to the feed chain 2A of the threshing device 2.
It is constituted by such as. That is, the auxiliary transporting device 7, the vertical transporting device 8, and the feed chain 2A constitute a transporting device A that transports the harvested grain culm toward the threshing device 2.

The vertical transport device 8 comprises a clamping transport mechanism 8A which clamps and transports the root side of the harvested grain culm, and a locking transport mechanism 8B which latches and transports the ear of the harvested grain culm. In addition, the rear end is connected to the traveling body 1 via a waist-folding link 9 so that the rear end of the cutting unit 4 can be pivoted up and down around the horizontal axis P independently of the cutting unit 4. Each is connected to the frame 10. The broken link 9
It is configured to bend and stretch by the power from the electric motor 12 via the speed reduction mechanism 11. Electric motor 1
When the waist-folding link 9 is driven to bend and extend by the power from the power supply 2, the vertical transport device 8 moves the cutting section 4
, And swings up and down around the horizontal axis P, and changes the height position of the front end of the front end with respect to the auxiliary transport device 7. Accordingly, the support position of the harvested grain culm when transported by the auxiliary transport device 7 is changed when transported by the vertical transport device 8, and with this change, the handling depth of the harvested grain culm in the threshing device 2 is changed. Has been changed. That is, the vertical transport device 8, the waist break link 9, the speed reduction mechanism 11,
Further, a handling depth adjusting means B for adjusting the handling depth of the harvested grain culm by the threshing apparatus 2 by changing the support position of the harvested grain culm in the culm length direction by the electric motor 12 in the middle of the transport of the transporting device A is configured. Have been. The electric motor 12
Function as an actuator for operating the handling depth adjusting means B.

As shown in FIGS. 1, 2 and 3, the handling depth is adjusted by the handling depth adjusting means B (where the harvested culm is transferred from the auxiliary transport device 7 to the vertical transport device 8). Threshing device 2 which is an example of a location on the lower side in the transport direction than
Is provided with a pair of head detecting means S1 and S2 arranged side by side at a predetermined interval in the culm length direction so as to detect an ear passage position of the harvested grain culm carried by the carrying device A. . Each of the tip detecting means S1 and S2 swings downward in the transport direction with the contact of the harvested grain culm with the tip, and is supported so as to return to the hanging posture when the harvested grain culm does not contact with the tip of the harvested grain. 13, and a microswitch 14 that is turned on in accordance with the swing of the detection arm 13 due to the contact of the harvested grain culm with the tip of the harvested grain, and information on / off operation of each microswitch 14 by each detection arm 13. Is output to the control device 15 mounted on the traveling machine 1 as detection information of the passage position of the head of the harvested grain culm. On the other hand, when the ON operation information is output from both the spike tip detecting means S1 and S2, the control device 15 determines that the handling depth adjusting means B has only the spike tip detecting means S1 on the stock base side to detect the spike tip. It is determined that it is located on the deep handling side (the vertical transport device 8 is located on the lower side) from the appropriate handling depth position where the detection is to be performed, and the handling depth adjusting means B determines the appropriate handling depth. The operation of the electric motor 12 of the handling depth adjusting means B is controlled so as to be in the position at which the handling depth adjusting means B is displaced toward the shallow handling side (the vertical transport device 8 is displaced upward). It has become. Further, when the off operation information is output from both the head detecting means S1 and S2, the handling depth adjusting means B enters a state where only the head detecting means S1 on the stock side detects the head. A state in which it is determined that it is located on the shallower handling side than the appropriate handling depth position (the vertical transport device 8 is located on the upper side), and the handling depth adjustment means B is located in the appropriate handling depth position. The operation of the electric motor 12 of the handling depth adjusting means B is controlled so that the handling depth adjusting means B is displaced toward the deep handling side (the vertical transport device 8 is displaced downward). That is, the control device 15
The operation of the electric motor 12 of the handling depth adjustment means B is controlled based on the detection information from the both head detection means S1 and S2 so that only the head side detection means S1 on the stock side detects the head. The processing depth control means 15A is provided as a control program, and by the control operation of the processing depth control means 15A, it is possible to automatically adjust the processing depth of the harvested grain culm by the threshing device 2 to an appropriate processing depth. This makes it possible for the threshing apparatus 2 to handle the harvested culm too deeply, resulting in a large number of thirds such as broken straws in the threshing apparatus 2 and adversely affecting the threshing sorting process. And the disadvantage that the power consumption in the threshing apparatus 2 becomes unnecessarily large can be avoided, and the handling in the threshing apparatus 2 caused by the handling depth of the harvested grain culm by the threshing apparatus 2 being too shallow. Leave has to be able to avoid many become inconvenient.

In the above configuration, when a straw is generated near the tip side detecting means S2 on the tip side, actually, only the tip side detecting means S1 on the stock side detects the tip of the harvested grain culm. In spite of the existence, there is a possibility that the tip detecting means S2 on the tip side may erroneously detect the floating straw generated in the vicinity as the tip of the harvested grain culm. In such a case, since both of the spike tip detecting means S1 and S2 on the spike tip side and the stock tip side detect the spike tip, the handling depth control means 15A performs As described above, the handling depth adjusting means B is displaced to the shallow handling side so that only the stock tip detecting means S1 detects the tip as shown in FIG. Since the state in which both of the spike tip detecting means S1 and S2 on the stock side continue to detect the spike is continued, the handling depth adjusting means B reaches the shallowest handling position, and the threshing apparatus 2 uses a large amount of handling. Inconveniences such as the occurrence of a residue occur.

Therefore, as shown in FIG.
In addition, there are two head detecting means S1 and S2 on the head side and the stock side.
In any case, when the state of detecting the tip continues for a predetermined time, it is determined that the tip detection by the tip detection means S2 on the tip side may cause erroneous detection due to the influence of the floating straw generated in the vicinity. At the same time, an alarm actuating means 15B is provided as a control program for actuating an alarm device 16 such as an alarm lamp or a buzzer based on the judgment to notify a worker of the possibility of occurrence of a floating stirrer. The above-mentioned inconvenience can be avoided by performing the inspection and maintenance of the vicinity of the tip detecting means S1 and S2 by the worker in accordance with the floating straw alarm operation by 15B.

Incidentally, the ear detection duration (predetermined time) of the head detection means S1 and S2, which is used as a criterion when the alarm actuating means 12B determines the possibility of occurrence of floating straw, is determined by the control of the handling depth control means 12A. A time (for example, 4.5 seconds) shorter than the time required for the handling depth adjusting means B to reach the shallowest handling position by operation (for example, 6 seconds depending on the configuration).
Is set to

Further, the handling depth control means 15A stops the adjusting operation of the handling depth adjusting means B to the shallow handling side as the alarm device 16 is operated by the control operation of the alarm operating means 15B. It is configured. In other words, by configuring the handling depth control means 15A in this manner, the alarm actuation means 15B may cause the tip detection by the tip detection means S2 on the tip side to have a possibility of erroneous detection due to the influence of floating straw generated in the vicinity thereof. After determining that there is, and activating the alarm device 16,
By the time the operator performs inspection / maintenance near the tip detecting means S1 and S2, the handling depth control means 15A displaces the handling depth adjusting means B to the shallow handling side where more unhandled portions occur. The inconvenience can be avoided, and thus, the unhandled state in the threshing apparatus 2 caused by the occurrence of floating straw can be minimized.

As shown in FIGS. 1 and 3, the mowing unit 4 is provided with a rotary potentiometer for detecting the adjustment position of the handling depth adjusting means B from the operation amount of the hip folding link 9 driven by the electric motor 12. Is provided. The position detecting means S3 indicates the detected adjusting position of the handling depth adjusting means B to the alarm operating means 1 of the control device 15.
5B. On the other hand, the alarm actuating means 15B is provided with a predetermined area h on the shallow handling side within the handling depth adjusting range H by the handling depth adjusting means B by the position detecting means S3 (for example, the entire handling depth adjusting range H from the shallowest handling side). The alarm device 16 is configured not to operate in a state where it is detected that the alarm device 16 is located within (１ ／ of the area).

That is, even if the state in which both of the head-side detecting means S1 and S2 on the head side and the head side detect the head continues for a predetermined period of time, the alarm actuating means 15B continues.
Only when the position detecting means S3 detects that the handling depth adjusting means B is located outside the predetermined area h on the shallow handling side within the handling depth adjusting range H, the alarm device 16 is provided.
In the state where it is detected by the position detecting means S3 that the handling depth adjusting means B is located in the predetermined area h on the shallow handling side within the handling depth adjustment range H, the harvesting is performed. Despite the fact that the crop depth adjustment means B is located within the predetermined area h on the shallow handling side within the handling depth adjustment range H, the tip detection means S on the tip end side.
It is determined that the crop is a long-culm crop in which the head is detected by the method 2, and the alarm device 16 is not operated. As a result, since the crop to be harvested is a long-culm crop, both the ear tip detecting means S1 and S2 on the ear tip side and the stock foot side
In spite of the fact that any of the above actually detects the tip of the harvested grain culm, the alarm actuating means 15B may detect the tip by the tip detecting means S2 on the tip side, which may cause erroneous detection due to the influence of floating straw. Thus, it is possible to automatically avoid the inconvenience of activating the alarm device 16 by judging.

Therefore, from the above configuration, it is possible to execute the floating straw alarm operation by the alarm operation means 15B with high accuracy which can automatically prevent the malfunction of the alarm device 16 that occurs when the crop to be harvested is a long culm crop. You can do it.

Hereinafter, the depth control means 15A and the alarm actuation means 15 will be described with reference to the flow charts of FIGS.
The handling depth control by the control operation of B will be described.

First, the threshing clutch lever 17 shown in FIG.
It is determined whether or not the threshing apparatus 2 is driven based on the on / off signal from the threshing switch 18 which is turned on in accordance with the entering operation (driving operation of the threshing apparatus 2) [Step # 1]. When the threshing device 2 is not driven, the process waits until the threshing device 2 is driven, and when the threshing device 2 is driven, the raising device 5 shown in FIGS.
Based on the detection information from the cereal culm detection sensor S4 provided at the lower part of the table, it is determined whether or not the transport of the cut cereal culm by the transport device A has been started [Step # 2]. When the transport of the harvested cereal culm by the transport device A has not been started, the apparatus waits until the transport of the harvested cereal culm by the transport device A is started, and when the transport of the harvested grain culm by the transport device A is started, The harvested corn culm detected by the cereal culm detection sensor S4 is transported by the transport device A so that the ear tip side and the stock root side both ear tip detection means S
It is determined whether or not a predetermined time required to reach the location where S1, S2 is disposed has elapsed [step # 3]. If the predetermined time has not elapsed, the apparatus waits until the predetermined time has elapsed. If the predetermined time has elapsed, the head detecting means S1 and S2 on the tip side and the stock root side pass the cutting grain culm through the head. It is determined whether or not detection has been performed [steps # 4 to # 6].
When both of the tip side detecting means S1 and S2 on the tip side and the stock side have detected the tip, first, it is determined that the handling depth adjusting means B is excessively displaced to the deep handling side, Handling depth adjusting means B such that handling depth adjusting means B is displaced to the shallow handling side.
Is operated (step # 7). Next, it is determined whether or not a flag is set (step # 8). If the flag is not set, it is determined whether or not the handling depth adjusting means B is located within the predetermined area h on the shallow handling side within the handling depth adjustment range H based on the information from the position detecting means S3. Is determined [Step # 9]. If the handling depth adjusting means B is not located within the predetermined area h on the shallow handling side, the crop that is being harvested (transported by the transport device A) will not It is determined that the crop is short enough to detect the tip by the tip detection means S2 on the tip side while being located outside the region h, a flag is set, and counting by the timer is started [steps # 10, # 11]. When the handling depth adjusting means B is located within the predetermined area h on the shallow handling side, the crop that is being harvested (transported by the transport device A) is not processed by the handling depth adjusting means B on the shallow handling side. Despite being located in the area h, it is determined that the crop is a long culm crop in which the tip is detected by the tip detection means S2 on the tip side, and the flag is not set. If the flag has been set in step # 8, the counting by the timer started in step # 11 has passed a predetermined time (both ear detecting means S1 and S2 on the head side and the stock side have both detected the head. It is determined whether or not the detection state has been continued for a predetermined time (step # 12). If the predetermined time has not elapsed, the counting by the timer is continued [Step # 13]. If the predetermined time has elapsed, the tip detection by the tip detection means S2 on the tip side determines that there is a possibility of erroneous detection due to the influence of the floating straw, activates the alarm device 16, and sets the handling depth adjustment means B The electric motor 12 is stopped to stop the adjusting operation of the handling depth adjusting means B toward the shallow handling side [Steps # 14 and # 15]. Steps # 4 to # 6
In the above, when only the tip detecting means S1 on the stock side detects the tip, it is determined that the handling depth adjusting means B is located at an appropriate position, and the handling depth is maintained in order to maintain the state. Stop the electric motor 12 of the adjusting means B [Step # 1
6]. Ear tip detecting means S1, S2 on the tip side and the stock side
If none of them detect the tip, it is determined that the handling depth adjusting means B is displaced too much to the shallow handling side, and the handling depth adjusting means B is displaced to the deep handling side. Then, the electric motor 12 of the adjusting means B is operated [Step # 17].
When only the head detecting means S2 on the head side has detected the head, both the head detecting means S1 and S on the head side and the stock side are detected.
In step # 18, step # 19, it is determined that an abnormality has occurred in any one of the two, and the alarm device 16 is immediately activated and the handling depth control is stopped. Also, when only the head side detecting means S1 on the stock side has detected the head, when only the head side detecting means S2 on the head side has detected the head, and
In any of the cases where none of the head detecting means S1 and S2 on the head side and the stock side has detected the head,
If the flag has already been set in Step # 10 and the counting by the timer has been started in Step # 11, the counting by the timer is stopped and the flag and the timer are reset [Step # 2]
0, # 21].

That is, steps # 1 to # 7 and steps # 15 to # 17 are control operations by the handling depth control means 15A, and steps # 8 to # 14 and step # 18.
# 21 are control operations by the alarm operation means 15B.

Reference numeral 19 shown in FIG. 3 is a manual setting device for manually adjusting the position of the handling depth adjusting means B. When the control operation by the handling depth control means 15A is started, the manual setting device 19 is used. By setting the handling depth adjusting means B in the predetermined area h on the shallow handling side in advance by the operation of, even though the crop to be harvested is a long culm crop,
Since the handling depth adjusting means B has been positioned in the deep handling side area outside the predetermined area h on the shallow handling side from the start of the control operation by the handling depth control means 15A, the position detecting means S3 can adjust the handling depth. It is detected that the means B is located outside the predetermined area h on the shallow-hand side, and based on the detected information, the alarm actuating means 1
5B can avoid the inconvenience of misjudging that the crop being harvested is a short-culm crop. Thus, the alarm operating means 15B is in a state in which both the head-tip detection means S1 and S2 on the head side and the stock side detect the head despite the fact that the crop to be harvested is a long-culm crop. It is possible to prevent the inconvenience of activating the alarm device 16 with the continuation of the predetermined time.

[Other Embodiments] Hereinafter, other embodiments of the present invention will be listed. A hydraulic cylinder or the like may be adopted as the operating actuator 12 of the handling depth adjusting means B. In the above embodiment, the handling depth control means 15A
When the control operation is started, the manual setting device 19 is operated to position the handling depth adjusting means B in advance in the predetermined area h on the shallow handling side, but instead, the handling depth controlling means 15A When starting the control operation, the handling depth control means 15A may be configured to automatically position the handling depth adjustment means B in the predetermined area h on the shallow handling side in advance. With this configuration, when starting the control operation by the handling depth control means 15A, it is possible to eliminate the trouble of positioning the handling depth adjusting means B within the predetermined area h on the shallow handling side by manual operation of the manual setting device 19. And the inconvenience of forgetting the operation can be eliminated.

In the claims, reference numerals are provided for convenience of comparison with the drawings, but the present invention is not limited to the configuration of the attached drawings.

[Brief description of the drawings]

FIG. 1 is a side view showing the first half of a combine.

FIG. 2 is a rear view of a main part showing an arrangement and a configuration of a tip detecting means.

FIG. 3 is a block diagram showing a control configuration.

FIG. 4 is a flowchart showing a control operation of a handling depth control unit and an alarm operation unit;

FIG. 5 is a flowchart showing control operations of a handling depth control unit and an alarm operation unit;

[Explanation of symbols]

 2 Threshing device 12 Operation actuator 15A Handling depth control means 15B Alarm actuating means 16 Alarm device A Conveying device B Handling depth adjustment means S1 Stock head side head detecting means S2 Ear head side detecting means S3 Position detecting means H Handling Depth adjustment range h Predetermined area on the shallow side

Continuation of the front page (56) References JP-A-3-103119 (JP, A) JP-A-2-124029 (JP, A) JP-A-5-284840 (JP, A) JP-A-5-308832 (JP JP-A-55-108209 (JP, A) JP-A-57-167632 (JP, U) JP-A-57-65043 (JP, U) JP-A-62-83426 (JP, U) (58) Field surveyed (Int. Cl. ⁷ , DB name) A01D 61/00

Claims (3)

(57) [Claims] 1. A threshing device (2) in which the support position of the harvested grain culm is changed in the culm length direction at a position on the way of conveyance (A) for conveying the harvested grain culm toward the threshing device (2). And a handling depth adjusting means (B) for adjusting the handling depth of the harvested grain culm by the method described above, and the transport device ( A pair of ear tip detection means (S1) and (S2) arranged side by side at a predetermined interval in the length direction of the culm to detect the ear passage position of the harvested grain culm conveyed by A).
Based on the detection information from the tip detecting means (S1) and (S2), operation of the handling depth adjusting means (B) so that only the tip side detecting means (S1) on the stock side detects the tip. Depth control means (15A) for controlling the operation of the actuator for use (12);
Any one of (S2) is a combine equipped with an alarm actuating means (15B) for activating an alarm device (16) when the state of detecting the head is continued for a predetermined time, wherein the handling depth adjusting means A position detecting means (S3) for detecting the adjustment position of (B) is provided, and the alarm actuating means (15B) is adjusted by the position detecting means (S3) to the handling depth adjusting means (B). A combine configured not to operate the alarm device (16) in a state where it is detected that the alarm device (16) is located in a predetermined region (h) on the shallow-hand side in the range (H). 2. The handling depth control means (15A) is configured to stop the adjustment operation of the handling depth adjustment means (B) to the shallow handling side in accordance with the operation of the alarm device (16). The combine according to claim 1, wherein 3. The handling depth control means (15A) is configured to position the handling depth adjustment means (B) within the predetermined area (h) on the shallow handling side when the control operation is started. The combine according to claim 1 or 2.