JPH0153008B2 - - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention provides a conveyance system in which multiple rows of harvested grain culms from a lifting reaping section are merged and supplied to a threshing section, in which the conveyance device is controlled by a drive mechanism for adjusting the handling depth. It is installed so that it can be freely swung in the direction of the culm of the harvested grain culm,
A control mechanism is provided that automatically operates the drive mechanism so that the handling depth is within a set range based on the detection result of a grain culm length detection device that acts on the grain culm during lifting, and The present invention relates to a combine harvester in which the control mechanism is linked to a grain culm presence/absence detection sensor located at a merging point or downstream thereof so as to operate only when this sensor is in a grain culm presence detection state.

Even when the above combine harvester reaps fewer grain culms than the number of rows that can be reaped, such as when working at the heel, the grain culm presence/absence detection sensor reliably goes into the state of detecting the presence of grain culms, allowing for better handling. This has been designed to ensure that control is carried out reliably. For this reason, conventionally, when work is interrupted and then resumed with the harvested grain culms remaining in the conveyance system, there has been a problem that the threshing load becomes large at the beginning of the work. This is because, as shown in FIG. 4, the work is generally started with only the lifting start end 1 of the lifting reaping section A being inserted into the planted grain culm.
Then, the grain culm presence/absence detection sensor 16 enters the state of detecting the presence of the grain culm remaining in the conveyance system B, and the control mechanism becomes operable, and the newly planted grain culm to be harvested is detected. If the culm length detection device 13 is in the state of detecting a short culm because the culm has not yet been introduced into the lifting and reaping section A, the conveying device 9 is swung toward the deep handling side, and the new plant to be reaped is As the standing grain culm is raised and introduced into the reaping section A, and the grain culm detection device 13 detects the culm length of the grain culm to be newly harvested, the conveying device 9, which had been operated to the deep handling position as described above, is moved. Due to the fact that it takes time to return to the correct position based on the detection result of the culm length detection device 13, the amount of grain that is fed to the transfer device until the transfer device 9 is corrected to the appropriate position is This is because the culms are supplied to the threshing section in a state where they are treated more deeply than those corresponding to the culm length.

The present invention makes it possible to avoid the above-mentioned problems associated with restarting work even if work is interrupted in the above-described manner, and moreover, when the grain culm to be newly harvested upon restarting work is longer than at the time of interruption. The purpose is to avoid problems with threshing.

Next, embodiments of the present invention will be described based on illustrative drawings.

As shown in FIGS. 1 and 2, a self-propelled machine having a crawler traveling device 2 is equipped with a threshing section 3,
Then, as the aircraft travels, the four raised grain culms are individually pulled up by four pulling devices 4, and these raised grain culms are cut by the reaping device 5. 4 from this pulling reaping part A
The first and second rows have harvested grain culms arranged side by side on the left and right.
Two strips are merged by each of the conveying devices 6 and 7 and conveyed to the rear of the machine, and the second conveying device 7
The harvested grain culms from the culm are merged with the harvested grain culms from the first conveyance device 6 by the third conveyance device 8, and these merged grain culms are transferred to the starting end of the threshing feed chain 10 of the threshing section 3 by the fourth conveyance device 9. A harvested grain culm conveyance system B configured to feed the harvested grains is provided at the front part of the self-propelled machine body, thereby configuring a combine harvester for four-row reaping.

The fourth conveying device 9 is connected to a fluid pressure cylinder 11.
The structure is such that the reaped grain culm can be oscillated in the direction of the culm body around the axis P on the conveyance end side, and by operating the cylinder 11, the stock side clamping conveyance section 9a of the fourth conveyance device 9 can be moved. The handling depth in the threshing section 3 is changed by changing the receiving and holding position for the grain culms from the first and third conveying devices 6 and 8. On the other hand, the three grain culm presence/absence detecting sensors 12 each equipped with a swinging sensor bar 12a brought into contact with the tip of the raised grain culm and a switch 12b interlocked with this sensor bar 12a are activated. It is arranged behind the pulling device 4 in parallel in the culm length direction of the culm, and detects the culm of the grain culm being pulled based on the on/off state of the switch 12b, and also reports the detection result. A culm length detecting device 13 is configured for electrically extracting the culm. That is, the two sensor bars 12a, 1 with the lower grain culm
2a and those sensor bars 12a, 12
Either the switches 12b and 12b for each sensor bar 12b are in the ON state, or the grain culm is in contact with only the lowest sensor bar 12a, and the sensor bar 12b is in the ON state.
If only the switch 12b for a is in the ON state, it is determined that the grain culm length is the standard length, and if the grain culm contacts all the sensor bars 12a... and all the switches 12b... are in the ON state, the grain culm length is determined to be the standard length. It is determined that the culm length is longer than the standard, the grain culm does not touch any sensor bar 12a, and all switches 12b...
When the grain is in a cut state, it is determined that the grain culm length is shorter than the standard. A volume 14 is attached to the fourth conveyance device 9 for detecting its swing position and for electrically taking out the detection results, and as shown in FIG. 3, the volume 14 and the grain culm detection device 13 all the switches 12b... and the control valve V for the cylinder 11.
are linked by a control mechanism 15, and the control mechanism 15 automatically operates the control valve V so that the handling depth is within a set range based on the detection result by the culm length detection device 13 and the detection result from the volume 14. It is configured to operate. Furthermore, the first and third transport devices 6, 8 of the transport system B
A grain culm presence/absence detection sensor 16 configured to detect the presence or absence of the grain culm based on the presence or absence of contact with the grain culm base side is arranged at the grain culm confluence point from the grain culm, and a third
As shown in the figure, the switch 17 is connected to the presence/absence detection sensor 16 so as to be in the ON state only when the presence detection sensor 16 is in the presence detection state, and the operating lever 19 of the traveling gear clutch 18 is connected to the switch 17. Each of the switches 20, which are linked so as to be in the engaged state only when the clutch is in the engaged position, is linked with a device 21 for switching the control mechanism 15 between an operating state and a non-operating state, and the switching device 21 is The control mechanism 15 is configured to be operated only when both switches 17 and 20 are in the on state, and the sensor 16 is connected to the grain culm presence/absence detection sensor 16 and the traveling device clutch 18. The control mechanism 15 is linked to operate only when the culm presence is being detected and the clutch 18 is in the engaged state. When the work is started and the grain culm is introduced into the conveying system B and the grain culm presence/absence detection sensor 16 is in the state of detecting the presence or absence, the control mechanism 15 automatically enters the operable state and raises the grain culm. The handling depth is adjusted to be within a set range based on the culm length detection result, and the threshing load is maintained approximately constant. By arranging them, the handling depth can be controlled reliably even when only three or less grain culms are to be harvested.

As shown in FIG. 3, only the depth adjustment to the deep treatment side by the control mechanism 15 should be stopped;
A stop mechanism 22 configured to stop the control mechanism 15 from applying an operating signal to the control valve V on the deep handling side is attached to the control mechanism 15, and also connects the cut grain culm conveyance system B and the lifting reaping section A. The switch 25 is configured to detect that the clutch 23 is in the engaged state based on the detection that the operating lever 24 of the clutch 23, which operates both to drive and stop the clutch, is in the engaged position.
A timer circuit 26 is attached to the lever 24 and operates the stop mechanism 22 into the operating state only for a certain period of time after the switch 25 is turned on to detect that the clutch 23 is in the engaged state. The switch 25 and the stop mechanism 22 are linked together, and the stop mechanism 2
2 into the clutch 23, it operates for the predetermined time required for the reaped grain culm to be raised and introduced from the fixed weeding implement 1 located at the starting end of the reaping section A to the grain culm presence/absence detection sensor 16. They are linked by state. Eventually, as shown in FIG. 4, the work was interrupted with the grain remaining in the cut grain culm transport system B, and only the installation part of the fixed weeding tool 1 was moved into the planted grain culm. The work is restarted after the grain has just been inserted, and at the beginning of the work, the grain culm presence/absence detection sensor 16 goes into the state of detecting the presence of the grain culm due to the residual grain culm, and the grain culm to be newly harvested is detected. Even if the culm length detection device 13 is in the short culm detection state because the culm has not been introduced into the lifting reaping section A, the fourth conveyance device 9 is swung toward the deep handling side by operating the stop mechanism 22. If the grain culm to be newly harvested is a longer culm than the grain culm at the time of work interruption, the fourth conveying device 9 is swung toward the shallow handling side so that the movement is not performed. In this case, consideration is given so that a predetermined treatment depth adjustment is performed based on the detected culm length.

Incidentally, even if the grain culm presence/absence detection sensor 16 is placed downstream of the grain culm merging point, the handling depth can be reliably adjusted during the reaping operation of three or less rows.

In place of the cylinder 11, a hydraulic or electric motor can also be used, and these are collectively referred to as the drive mechanism 11.

In summary, in the above-described combine harvester, the present invention allows the mechanism 22 for stopping only the depth adjustment to the deep handling side by the control mechanism 15 to be connected to the clutch 23 for the conveyance system B for a certain period of time after the clutch 23 is engaged. It is characterized by being linked in a state in which only the two parts are activated.

In other words, the work is interrupted with the grain culm left in the conveyance system B, and the work is resumed with only the starting end 1 of the lifting reaping part A entering the planted grain culm, and the work is restarted with the grain culm remaining in the conveyance system B. As described above, even if the control mechanism 15 is in the operable state and the culm length detection device 13 is in the short culm detection state, a new grain culm to be harvested is raised and introduced into the reaping section A, and the culm length is detected. Until the device 13 is in a state to detect the culm length of the grain culm to be newly harvested, the operation of the conveyor device 9 toward the deep handling side is stopped by the action of the stop mechanism 22, so that when the work is restarted, It is now possible to prevent unreasonable operational displacement of the conveying device 9 due to residual grain culms in the conveying system B and the absence of grain culms in the culm length detection device 13 arrangement part, and the threshing that conventionally occurred due to such inappropriate operation can be prevented. The load no longer increases. Moreover, since the transport device 9 is allowed to operate in the shallow handling direction at the start of work, if the grain culm to be newly harvested at the start of work is longer than the grain culm at the time of interruption of work, The handling depth adjustment for the grain culm is now performed as specified, and as in the case where the operation of the conveying device 9 is also performed on the shallow handling side at the beginning of the work, new harvesting is performed with the start of work. It is now possible to avoid the trouble of the grain culms having longer culms being supplied to the threshing section 3 in a state equivalent to being treated more deeply than at the time of interruption. Even if work is interrupted in the manner described above, or even if reaping is started from a grain culm that is longer than at the time of interruption, the threshing load will not increase and the threshing process will proceed smoothly from the beginning. It became possible to do so.

[Brief explanation of drawings]

The drawings illustrate embodiments of the combine harvester according to the present invention, with FIG. 1 being a side view of the front part of the combine, and FIG.
3 is a block diagram of the cylinder control system, and FIG. 4 is a schematic side view showing the front part of the combine in a state in which work is started. 3... Threshing section, 9... Conveying device, 11... Drive mechanism, 13... Grain culm length detection device, 15... Control mechanism, 16... Grain culm presence/absence detection sensor, 22... Stopping mechanism, 23... Clutch, A...lifting reaping section, B...conveyance system.

Claims (1)

[Claims] 1. In the conveyance system B that merges multiple rows of harvested grain culms from the pulling and reaping section A and supplies them to the threshing section 3,
The conveyance device 9 is connected to a drive mechanism 11 for adjusting the handling depth.
A grain culm length detecting device 1 is provided so as to be swingable in the direction of the culm of the harvested grain culm, and acts on the grain culm during lifting.
A control mechanism 15 is provided to automatically operate the drive mechanism 11 so that the handling depth is within a set range based on the detection result of step 3. A combine harvester in which the control mechanism 15 is linked to the grain culm presence/absence detection sensor 16 so that the sensor 16 operates only when the grain culm presence detection sensor 16 is in the grain culm presence detection state, and the control mechanism 15 is capable of deep handling. A mechanism 22 for stopping only the handling depth adjustment to the side is provided in the conveyance system B.
The combine harvester is characterized in that the clutch 23 is connected to the clutch 23 in such a manner that it operates only for a certain period of time after the engaging operation.