JPS6349162Y2 - - Google Patents

Description

[Detailed Description of the Invention] The present invention is 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 driven by a drive mechanism to adjust 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 and handles the harvest. This is designed to ensure depth control. 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 15 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 it 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 newly planted plant to be reaped is When the grain culm is raised and introduced into the reaping section A, and the culm length detection device 13 detects the culm length of the grain culm to be newly harvested, the conveying device 9, which has been operated to the deep handling position as described above,
Due to the fact that it takes time to return and correct the culm to the proper position based on the detection result of the culm length detection device 13, the culm is not supplied to the conveying device 9 until the conveying device 9 is corrected to the proper position. This is because the grain culm that has been removed is supplied to the threshing section in a condition that is handled more deeply than that corresponding to the culm length.

An object of the present invention is to avoid the above-mentioned problems associated with restarting work even if work is interrupted in the manner described above.

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, four pulling devices 4...
A lifting reaping section A configured to individually raise four planted grain culms and cut these raised grain culms with a reaping device 5, and four reaped grain culms from this lifting reaping section A. The harvested grain culm from the second conveying device 7 is transferred to the third conveying device 8. A harvested grain culm conveying system configured to merge the harvested grain culms from the first conveying device 6 and supply these merged grain culms to the starting end of the threshing feed chain 10 of the threshing section 3 by the fourth conveying device 9. B is provided at the front part of the self-propelled machine body, thereby constructing a combine harvester for four-row cutting.

The fourth conveying device 9 is connected to a fluid pressure cylinder 11.
By operating the cylinder 11, the grain culm can be swung in the direction of the culm around the axis P on the conveyance end side. The handling depth in the threshing section 3 is changed by changing the grain culm transfer clamping position. On the other hand, a swinging sensor bar 12a is brought into contact with the tip of the grain culm, and a switch 12b is linked to the sensor bar 12a.
Grain culm presence/absence detection sensor 12, each equipped with
The culms are arranged behind the lifting device 4 in a state in which they are parallel to each other in the culm direction of the grain culm being pulled, and the culm of the grain culm being pulled is controlled based on the on/off state of the switch 12b. A culm length detection device 13 is configured to detect the culm and to electrically take out the detection results. That is, the two sensor bars 12a with the lower grain culm,
12b, and the sensor bars 12a, 1
Either the switches 12b and 12b for each sensor bar 2b are in the on state, or the grain culm is in contact with only the lowest sensor bar 12a, and the sensor bar 1
If only the switch 12b for 2a 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, and the culm does not touch any sensor bar 12a, and all switches 12b are
When ... is in a cut state, it is determined that the grain culm length is shorter than the standard. Said fourth conveyance device 9
A volume 24 for detecting the swinging position and electrically taking out the detection results is attached to the volume 24, as shown in FIG.
and all switches 12b of the culm length detection device 13...
The control valve V for the cylinder 11 is linked by a control mechanism 14, and the control mechanism 14 is controlled 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 by the volume 24. The control valve V is configured to be automatically operated. Furthermore, the first and third transport devices 6 of the transport system B,
A grain culm presence/absence detection sensor 15 configured to detect the presence or absence of a grain culm based on the presence or absence of contact with the grain culm base side is placed at the grain culm confluence point from 8, and as shown in FIG. , a switch 16 that is linked to the sensor 15 so as to be turned on only when the sensor 15 is in the presence detection state, and a switch 16 that integrally drives and stops the lifting reaping section A and the reaped grain culm conveying system B. a switch 19 connected to the operating lever 18 of the clutch 17 so as to be engaged only when it is in the engaged position; and an operating lever 21 of the clutch 20 for the traveling device 2;
and the switches 22 are linked together so that they are in the engaged state only when the clutch is in the engaged position.
A device 23 for switching the control mechanism 14 between an operating state and a non-operating state is linked, and the switching device 23 is connected to the switches 16, 19, 2.
Control mechanism 14 only when all of 2 are in the ON state.
The grain culm presence/absence detection sensor 15, the conveying system clutch 17, and the traveling clutch 20 are configured to operate the grain culm presence/absence detection sensor 15 into an activated state.
The control mechanism 14 is linked to operate only when the presence of the vehicle is detected, the transport system clutch 17 is engaged, and the traveling clutch 20 is engaged.

In order to carry out the work, the machine is run, and the lifting and reaping section A and the harvested grain culm conveying system B are driven, and the reaped grain culm is introduced into the merging point and detected by the grain culm presence/absence detection sensor 15. When the existence of the grain culm is detected, the control mechanism 14 is automatically activated, and the handling depth is adjusted to be within the set range based on the detection result of the culm length of the middle grain culm, and the threshing load is reduced. In addition, so that it remains approximately constant,
By arranging the grain culm presence/absence detection sensor 15 at the grain culm merging point, handling depth control is ensured even when only three or less grain culms are harvested. Further, as shown in FIG. 4, the work was interrupted with the grain culm remaining in the cut grain culm transport system B, and only the fixed weeding tool 1 was inserted into the planted grain culm. When the work is resumed in a state where the grain culm is not too much, at the beginning of the work, the grain culm presence/absence detection sensor 15 is in the state of detecting the presence or absence of the grain culm due to the residual grain culm, and the grain culm to be newly harvested is in the state of being detected. Even if the culm length detection device 13 is in the state of short culm detection because it has not been introduced into the reaping section A, the running clutch 20 is engaged and the grain culm to be newly harvested is detected in the arrangement section of the culm length detection device 13. The control mechanism 14 does not operate unless the fourth conveying device 9 is oscillated unless the grain is introduced into the conveying system B, so that the above-mentioned threshing load due to grain culm remaining in the conveying system B and short culm detection by the culm length detection device 13 is reduced. The increase is prevented.

Note that, instead of the switching device 23, the control mechanism 1
4, at least adjust the handling depth to the deep handling side,
It is also possible to adopt a control structure that allows the clutch to be stopped when the conveyance system clutch 17 is in the engaged state and the traveling clutch 20 is in the disengaged state, and is enabled when both the conveying system clutch 17 and the traveling clutch 20 are in the engaged state. , it is possible to prevent the fourth conveyance device 9 from swinging unreasonably toward the deep handling side at the beginning of the work, and these are activated when the conveyance system clutch 17 is in the engaged state and the traveling clutch 20 is in the disengaged state, It is also collectively referred to as a mechanism 23 that stops operating when both the conveying clutch 17 and the running clutch 20 are in the engaged state, and stops at least the deep handling by the control mechanism 14 in the operating state.

Furthermore, even if the grain culm presence/absence detection sensor 15 is placed downstream of the grain culm merging point, it is possible to reliably adjust the handling depth when reaping three or fewer rows.

In place of the cylinder 11, a fluid pressure type or an electric motor can also be used, and these can be used as the drive mechanism 11.
Collectively called.

In summary, the present invention provides the mechanism 23 for stopping the control mechanism 14 from adjusting the handling depth at least toward the deep handling side in the above-mentioned combine harvester.
The conveyance system clutch 17 and the travel clutch 2
0, when the conveyance system clutch 17 is in the engaged state and the traveling clutch 20 is in the disengaged state, the conveying system and traveling clutch 1
7 and 20 are linked so that they stop operating when they are in the on state.

In other words, the work is interrupted with the grain culm left in the conveyance system B, and the work is restarted with only the starting end of the lifting reaping part A entering the planted grain culm, Grain culm presence/absence sensor 15
Even if the culm length detecting device 13 is in the state of detecting the presence of a culm and the culm length detecting device 13 is in the state of detecting a short culm, the traveling clutch 20 is engaged and the grain culm to be newly harvested is raised and placed in the reaping section A. This is because the operation of the conveyance device 9 toward the deep handling side is stopped by the action of the stop mechanism 23 until the culm length detection device 13 detects the culm length of the grain culm to be newly harvested. , it becomes possible to prevent unreasonable operational displacement of the conveying device 9 due to the remaining grain culms in the conveying system B and the absence of grain culms in the culm length detection device 13 arrangement part when restarting work, and as a result, the unreasonable operational displacement of the conveying device 9 The increase in threshing load that conventionally occurred due to improper operation no longer occurs, and it is now possible to smoothly perform threshing from the beginning of work.

[Brief explanation of drawings]

The drawings illustrate an embodiment of the combine harvester according to the present invention, and FIG. 1 is 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... Conveyance device, 11... Drive mechanism, 13... Grain culm length detection device, 14... Control mechanism, 15... Sensor, 17... Clutch for conveyance system, 20... For traveling Clutch, 23...stopping mechanism, A...lifting and reaping section, B...conveyance system.

Claims (1)

[Scope of utility model registration request] In a conveying system B that merges multiple rows of reaped grain culms from the lifting and reaping section A and supplies them to the threshing section 3, the conveying device 9 is operated by a drive mechanism 11 to adjust the handling depth. It is installed so that it can be freely swung in the direction.
A control mechanism 14 is provided that automatically operates the drive mechanism 11 so that the handling depth is within a set range based on the detection result by a grain culm length detection device 13 that acts on the grain culm being raised, and the conveyance system The control mechanism 14 is linked to the grain culm presence/absence detection sensor 15 located at the grain culm confluence point B or downstream thereof so as to operate only when this sensor 15 is in the grain culm presence detection state. It is a combine harvester,
A mechanism 23 for stopping at least the handling depth adjustment toward the deep handling side by the control mechanism 14 is set to the conveying system clutch 17 and the traveling clutch 20 when the conveying system clutch 17 is in the engaged state and when the conveying system is traveling. The transport system clutch 20 operates when the clutch 20 is in the disengaged state, and the conveyance system clutch 17, 20
A combine harvester characterized in that the combine harvester is linked so that it stops operating when it is in the engaged state.