JPH0767455A - Combine - Google Patents

Abstract

(57) [Abstract] [Purpose] In mowing work, the cut grain culms are smoothly conveyed without the need for a troublesome control operation, and the occurrence of leftovers is prevented. [Constitution] In a self-removing combine, a state in which a cut grain culm is conveyed in the middle of a grain culm conveying route for threshing processing,
A culm throwing device that can be switched to a state where all the culms of the harvested culm are released from the root side and all the culms of the harvested culm are thrown into the threshing device 2 is provided, and the cutting height of the culms is gradually raised to mow When the cutting culm sensor S2 that detects that the work is a cutting work state and that the culm length of the conveyed grain culm is less than or equal to the set value is activated, the whole culm throwing device 16 is completely moved from the grain culm conveying state. When the travel stop clutch C, which is operable to cut off only the power to the travel device 1, is operated, the drive speed of the pre-mowing processing unit 4 is maintained at the set speed, and the travel stop state is set. After a lapse of a set time from the time when the state is reached, the all culm throwing device is returned to the grain culm transporting state, and control is performed so as to cancel the drive speed maintaining state of the pre-mowing processing unit 4.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention conveys a mowing culm to a threshing device by a mowing pretreatment section, and nips and conveys the tip side inside the threshing device while nipping and carrying the stock side with a nipping and conveying device. The present invention relates to a combine configured to perform a handling process.

[0002]

2. Description of the Related Art In the above combine, in the prior art, as disclosed in, for example, Japanese Utility Model Laid-Open No. 4-124035,
When the detector that detects the mowing height of the mowing pretreatment section detects a high mowing state at the edge of the ridge, the handling depth adjustment is operated to the deeper handling side and the holding transport device for threshing work is released. There was one configured to let.

[0003]

SUMMARY OF THE INVENTION In the above-mentioned conventional structure, the mowing pretreatment unit is provided in order to prevent the mowing pretreatment unit from colliding with the ridge, for example, when approaching a ridge while performing a mowing operation. When the mowing work is performed while raising the cutting height, the cutting height for the planted grain culm becomes extremely high.However, when such an extremely short mowing grain culm is transported, the tip end side is slightly left in the handling barrel in the handling room. Since it is not possible to perform threshing treatment just by contacting with, it is necessary to release the pinching of the stock and put all the culm in the handling room to perform threshing treatment to reduce the untreated residue. It was done. By the way, in this type of combine, the transmission system is configured so that the drive speed of the cutting pretreatment unit is synchronized with the vehicle body traveling speed in order to smoothly convey the cut culms, so the cutting with the conventional structure is performed. In the work, if the caring machine is stopped with the traveling device approaching the ridges while the reaping pretreatment unit gets over the ridges and the car body is stopped, the drive of the reaping pretreatment unit is also stopped and the harvested culm is transported. There is an evil that cannot be done. Therefore, as a means for solving the above-mentioned inconvenience, it is conceivable to provide a traveling stop clutch that stops only the traveling device and stop the vehicle body at the edge as described above using this traveling stop clutch. Is performed at extremely low speed while taking care not to contact the reaping pretreatment section with the ridges.Therefore, if only the traveling device is stopped in such an extremely low speed state, the drive speed of the reaping pretreatment section will also slow down. However, there is a drawback that the harvested grain culms cannot be transported smoothly. An object of the present invention is to provide a combine capable of smoothly carrying a cut grain culm to be cut without a subsequent culm, while reducing the unhandled short culm left in the cutting work mode and requiring no troublesome operation. In point.

[0004]

[Means for Solving the Problems] The features of the present invention are, in the combine harvester described at the beginning, a state in which a harvested grain culm is transported in the middle of a grain culm transporting route for threshing treatment, and a stock source of the harvested grain culm. With the provision of a whole culm feeding device that can be switched to a state where all side culms of the harvested grain culms are thrown into the threshing device by releasing the side clamping, and the culm length of the grain culms conveyed to the threshing device is less than the set value. Short culm detecting means for detecting that there is,
The cutting work state detection means for detecting the cutting work state in which the cutting work is performed while gradually increasing the cutting height of the grain stalks, and the travel stop clutch that is operable to shut off only the power to the machine traveling device has been operated. When the cutting operation state detecting means and the short culm detecting means detect and operate, the all culm feeding device is switched from the grain culm conveying state to the all culm feeding state. Together with that, when the traveling stop state detecting means is switched to the detecting state, the drive speed of the pre-mowing processing unit is maintained at a set speed, and from the time when the traveling stop state detecting means reaches the detection state. After a lapse of a set time, the control for returning the all culm throwing device to the grain culm conveying state and canceling the driving speed maintaining state of the pre-mowing processing unit. Lies in that is provided with means.

[0005]

When the cutting operation is detected during the cutting operation and the culm length of the cutting and conveying grain culm is detected to be less than the set value, the all culm feeding device is switched to the all culm feeding state. Even if it is a short culm, all the culm including the stem is put into the threshing device, so that there is no leftovers. Also, in such a mowing operation run, when the reaping pretreatment unit is running over the ridge while approaching the ridge while traveling, the travel stop clutch is operated to stop only the traveling device. Even when traveling at a low speed, the drive speed of the pre-mowing processing unit is maintained at the set speed, so that the mowing culm can be smoothly conveyed to the threshing device at a high speed without any forward tilt. Then, the whole culm feeding work in such a constant speed transportation is performed for a set time [for example,
In the mowing work, the work is completed until the harvesting work of the grain culms is completed and almost all the harvested grain culms have been transported to the threshing device], and then all the culm feeders are returned to the grain culm transporting state. Then, the drive speed maintaining state of the pre-pruning processing unit is released, the drive state is synchronized with the vehicle traveling speed, and the normal cutting operation state is restored.

[0006]

Therefore, in the mowing work, even if the culm length of the mowing grain culm is shortened, it is possible to suppress the occurrence of unhandled culm and to stop the car body during the mowing work so as not to contact the ridges. Even without requiring a troublesome operation such as returning the speed change operation tool to the high speed side,
The cut culm can be transported smoothly, and after the cutting work is completed, the normal cutting work state can be restored and the subsequent cutting work can be continued.

[0007]

Embodiments will be described below with reference to the drawings. Figure 4
As shown in FIG. 2, the cutting pretreatment unit 4 is provided on the front of the machine body including the pair of left and right crawler traveling devices 1, the threshing device 2, the control unit 3, and the like.
Is connected to be movable up and down around the horizontal axis P to form a combine. The pre-cutting processing unit 4 is a raising device 5 that causes planted grain culms, a cutting blade 6 that cuts the roots of the planted grain culms that have been raised, and an auxiliary that collects the harvested grain culms and conveys them backward. It is provided with a carrier device 7, a vertical carrier device 9 and the like which hands over the grain culm to the sandwiching carrier device 8 of the threshing device 2 while gradually lying down,
It is configured to swing up and down by driving the lift cylinder CY. In normal mowing work, the mowing pretreatment unit 4 is controlled to be lifted and lowered so as to maintain the set height with respect to the ground, but it can also be lifted and lowered by manually operating the lift lever 11 provided in the control unit 3. . In the threshing device 2, the nipping and transporting device 8 composed of a feed chain 8a that is rotationally driven and a sandwiching rail 8b that is arranged oppositely to the threshing device 2 sandwiches and transports the root side of the grain culm, and the threshing device on the tip side. It is configured so that it can be handled and processed within 2.

As shown in FIG. 1, the power of an engine E mounted on the airframe is changed by a hydrostatic continuously variable transmission 30 and then supplied to the left and right crawler traveling devices 1 and 1 via a transmission case 31. In addition, the transmission system is configured so that the power after shifting is supplied to the pre-mowing processing unit 4, and the drive speed of the pre-mowing processing unit 4 changes in synchronization with the machine body traveling speed. The hydrostatic continuously variable transmission 30 is configured to be shifted by a shift lever 32, and the shifting electric motor M3 is linked to the shift operation system via a friction mechanism 33 [hereinafter referred to as a shift motor].
It is also configured to be operated by. Further, inside the mission case 31, traveling stop clutches C, C that can shut off only the power to the left and right crawler traveling devices 1, 1 in response to the depression operation of the clutch pedal 34 provided in the aircraft control section are installed. is there. The clutch switch S indicates that the clutch pedal 34 has been depressed.
It is configured to be detected by W [an example of a traveling stop state detecting means].

The vertical transfer device 9 comprises a stock transfer device 9a for nipping and transferring the stock side of the grain culm, a head transfer device 9b for locking and transporting the head side of the culm, and a tip guide plate 9c. It is swingably supported about the same axis as the swing axis P of the processing unit 4, and is swingably adjustable by an electric motor M1 with a gear type speed reduction mechanism (hereinafter referred to as a handling depth motor). The receiving and pinching portion from the auxiliary transporting device 7 is changed in the culm length direction, and the handling depth in the threshing device 2 can be changed and adjusted. The handling depth motor M1 is automatically controlled so that the handling depth is always appropriate regardless of the culm length of the cut grain culm. That is, as shown in FIG. 2 and FIG. 4, a pair of grain culm presence / absence sensors S1 and S2 for culm length detection are provided in the conveyance route of the harvested grain culm, and the tip of the grain culm is provided between these sensors S1 and S2. In order to be located, the handling depth motor M1 is automatically controlled by the control device 12 provided with a microcomputer as a control means. Both of the sensors S1 and S2 are provided in a switch type that is turned on by swinging when a grain culm contacts, and a grain culm presence / absence sensor S1 located on the tip side (hereinafter referred to as a long culm sensor).
Is off, the grain culm presence sensor S2 located on the stocker side
The handling depth motor M1 is controlled so that the [short culm detecting means, which will be referred to as a short culm sensor hereinafter] is turned on. At the swinging fulcrum portion of the vertical conveyance device 9, a potentiometer-type supply position sensor 13 for detecting the current adjustment position of the vertical conveyance device 9 is provided.
A stock origin sensor 14 for detecting whether or not grain culms are being carried is provided in the carrying route.

This combine is provided with a structure capable of automatically performing a mowing operation at the edge of a ridge and preventing the cut grain culm of an extremely short culm generated in this mowing work from being left untreated. That is, an instruction switch 15 [an example of a cutting operation state detecting means] for giving an instruction to start the cutting operation to the control unit 3 is provided, and when the instruction switch 15 is operated, the cutting pretreatment unit 4 is automatically operated. Lifting and handling depth motor M1
Is configured to operate on the deepest handling side. In addition, in the middle of the grain culm transportation route for threshing processing, there is a state in which the cut grain culms are conveyed and a state in which the stock side of the cut grain culms is released and all the culms of the cut grain culms are put into the threshing device. When the all-culm throwing device 16 that can be switched is provided, and the long culm sensor S1 and the short culm sensor S2 both detect the absence of grain culm in a state in which the handling depth motor M1 is adjusted to the deepest handling side, A configuration in which the control device 12 controls to switch the all-culm throwing device 16 from the sandwiched conveying state to the all-culm throwing state after a required time for transporting the cut culm from the sensor location to the all-culm throwing device 16 has passed. There is. As shown in FIG. 5, the sandwiching rail 8b pivotally connects a plurality of divided bodies with a pivot pin 23, and supports a rod 24 connected to each pivot pin 23 on a frame body 25 so as to be vertically slidable. ,
Further, the coil springs 18 fitted onto the rods 24 are configured to urge the respective pivot points to the feed chain 8a side. In the middle of the conveyance path by the nipping / conveying device 8, the rod is provided at a part of the pivot points of the nipping rail 8b which is urged by the spring 18 toward the feed chain 8a by the operating member 17 which is interlocked with the electric cylinder M2. The whole culm throwing device 16 is configured so that 24 can be lifted upward to partially cancel the grain culm sandwiching action with the feed chain 8a. That is,
By releasing the nipping by the nipping rails 8b, the grain culm is also drawn inside together with the culm portion by the handling cylinder that is rotationally driven inside the threshing device 2 (see FIG. 6).

Further, a transport rotation sensor 19 for detecting the rotation state of the stock carrier 9a is provided on the drive shaft portion of the vertical carrier 9, and the sensor S1 by the stock carrier 9a is detected from the detected value of the carrier rotation sensor 19. , S2 is configured to obtain the transport status from the disposition location to the transport end portion, and since the rotation speed of the feed chain 8a is a predetermined constant speed, the transport time from the transport start end portion of the feed chain 8a to the pinch release location Is a constant value, and can be calculated by a timer.

The control procedure of the control device will be described below. As shown in FIG. 3, it is detected that the stock origin sensor 14 is in the ON state and the grain culm is in the transporting state, and when the instruction switch 15 is operated, the pre-mowing processing unit 4 is raised and the handling depth is increased. The motor M1 is operated to the deepest handling side to maintain that state [steps 1 to 4]. When the instruction switch 15 is not operated, normal handling depth control is executed [step 5]. Then, the conveyance rotation sensor 19
The conveyance state is detected from the detection information of No. 1, and the vertical conveyance device 9 is confirmed to be at the deepest handling side supply position from the detection information of the supply position sensor 13, and the long culm sensor S1 and the short culm sensor S2 are turned off. When it is detected that the extremely short culm has been conveyed in the state, it is judged from the detection information of the conveyance rotation sensor 19 that the grain culm has been conveyed from the positions where the sensors S1 and S2 are arranged to the starting end of the feed chain 8a. From that point, the whole culm feeding device 1 from the starting end of the feed chain 8a
When the required transfer time up to 6 has elapsed, the electric cylinder M2
To switch to the all culm input state [Step 6-
11]. After that, when the clutch switch SW is detected and operated, the shift motor M is driven so as to be driven at a set speed so as not to reduce the conveying speed of the cutting culm by the cutting pretreatment unit 4.
3 to maintain the speed [Steps 12, 1
3]. Then, after the grain culm mowing work is completed in association with the mowing work and the required time for transporting the harvested grain culm to the threshing device elapses, the shift position holding state by the shift motor M3 is released to return to neutral, and The output to the cylinder M2 is stopped and the all culm throwing device 16 is returned from the all culm throwing state to the pinching and conveying state [steps 14 to 16].

[Other Embodiments] The cutting operation state detecting means is configured to detect that the forced raising operation of the pre-mowing processing section 4 by the elevating lever 11 continues for a set time or longer, instead of the above-mentioned instruction switch. But it's okay. Further, the release of the shift control by the shift motor M3 and the return operation of the all culm insertion device 16 are automatically performed after the set time has elapsed, and the shift lever 32 is manually operated after the set time has elapsed. It may be configured to detect that the operation has been returned to the neutral position and release the operation.

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

[Brief description of drawings]

[Fig. 1] Combined transmission system diagram

FIG. 2 is a control block diagram.

FIG. 3 is a control flowchart.

FIG. 4 is a side view of the front part of the combine.

[Fig. 5] Side view of all culm throwing device

FIG. 6 is a side view of the all culm throwing device.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 Airframe traveling device 2 Threshing device 4 Pre-cutting processing unit 8 Nip transfer device 12 Control means 15 Mowing work state detection means 16 All culm throwing device C Travel stop clutch SW Travel stop state detection means S2 Short culm detection means

 ─────────────────────────────────────────────────── ─── Continuation of the front page (72) Inventor Futoshi Ikeda 64 Ishizukita-machi, Sakai City, Osaka Prefecture Kubota Sakai Factory Co., Ltd. (72) Inventor Yoshiyoshi Go Fukuoka 64, Ishizukita-machi, Sakai City, Osaka Prefecture Kubota Sakai Manufacturing In-house (72) Toshikatsu Otani 64 Ishizukita-machi, Sakai City, Osaka Prefecture Kubota Sakai Factory Co., Ltd. (72) Inventor Koji Yamagata 64, Ishizukita-cho, Sakai City, Osaka City Kubota Sakai Factory Co., Ltd. (72) Inventor Seiyaho 64 Ishizukita-machi, Sakai City, Osaka Prefecture Kubota Sakai Factory Co., Ltd. (72) Inventor Shigeki Hayashi 64, Ishizukita-machi, Sakai City Osaka Prefecture Kubota Sakai Factory Co., Ltd.

Claims (1)

[Claims] 1. A cutting pretreatment unit (4) conveys a cut culm toward a threshing device (2), and a sandwiching and conveying device (8).
Threshing device (2) while sandwiching and transporting the stock side
It is a combine that is configured to handle and process the tip side internally, and in the middle of the grain culm transportation route for threshing processing, the state where the harvested grain culm is transported and the clamping of the harvested grain culm on the plant side is released. The whole culm feeding device (16) that can be switched to the state in which all the culms of the harvested grain culm are put into the threshing device (2) is provided, and the culm length of the grain culm conveyed toward the threshing device (2) is Short culm detecting means (S2) for detecting that the value is less than or equal to the set value
And a cutting operation state detecting means (15) for detecting the cutting operation state in which the cutting work is performed while gradually increasing the cutting height of the grain culm, and only the power to the machine traveling device (1) can be cut off. A traveling stop state detecting means (S) for detecting that the traveling stop clutch (C) is operated.
W) and when the cutting operation state detecting means (15) detects and the short culm detecting means (S2) detects, the whole culm feeding device (16) is fed from the grain culm transporting state to all culms. When the traveling stop state detecting means (SW) switches to the detection state while switching to the state, the drive speed of the pre-mowing processing unit (4) is maintained at the set speed, and the traveling stop state is detected. After a lapse of a set time from the time when the means (SW) reaches the detection state, the all culm throwing device (1
A combine equipped with a control means (12) for returning 6) to the grain culm transporting state and canceling the drive speed maintaining state of the pre-mowing processing section (4).