JPH0767457A - Combine - Google Patents

Abstract

(57) [Summary] [Purpose] Even during mowing work, while preventing dust from blowing out of the handling room and noise, it is possible to prevent leftover handling. [Structure] In a self-removing combine, in the middle of the grain culm transportation route for threshing processing, the sandwiched transport state of transporting the harvested grain culm and the removal of the sandwiched side of the harvested grain culm from the root side of the harvested grain culm To provide a vibration detecting sensor 30 for detecting a vibration situation caused by a load change of the threshing device 2 and a threshing device 2 by providing an all-culm throwing device that can be switched to the all-culm throwing state in which the culms are thrown into the threshing device 2. With a short culm sensor S2 for detecting that the culm length of the grain culm to be conveyed is less than or equal to a set value, based on the detection information of the short culm sensor S2, the all culm throwing device is moved from the sandwiched conveying state to the all culm throwing state. The switching is performed, and based on the detection information of the vibration detection sensor 30, the all-cule throwing device is controlled to return from the all-culm throwing state to the sandwiching and conveying state.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention conveys a grain culm after cutting toward a threshing device, and nips and processes the tip side inside the threshing device while nipping and transporting the stock side with a nipping and conveying device. The combine is configured as follows.

[0002]

2. Description of the Related Art In the above combine, in the prior art, as disclosed in, for example, Japanese Utility Model Publication No. 123837/1990,
When an extremely short grain culm that cannot be detected by the grain culm presence sensor located on the stocker side of the grain culm presence sensor is conveyed, this grain culm presence sensor is in the off state (the absence of grain culm ] Is detected, it is configured to release the stock source sandwiching state of the transport grain culm in the transport route second half of the sandwiching transport device for threshing work, and to introduce all the culms of the transport grain culm into the handling chamber, and the grain culm In some cases, when the presence / absence sensor detects a grain culm, the all culm throwing state is released.

[0003]

In the above conventional structure, when the cutting height for the planted grain culm is extremely high, when such an extremely short corn grain is conveyed, the handling room With this, it is not possible to perform threshing treatment just by making a slight contact of the tip side with the handling barrel.In such a case, the stock pinching is released and the whole culm is put into the handling chamber to perform threshing treatment. This is to reduce the amount of leftovers. However, in the above configuration, the pinching of the pinching and conveying device is canceled based on the detection result of the grain culm presence sensor provided on the starting end side in the grain culm conveying route in the cutting pretreatment unit, and the grain culm presence sensor detects the grain. When the culm is detected, that is, when a long culm is conveyed, the configuration is such that the normal holding and conveying state is restored. Therefore, the following problems occur. That is, in order to eliminate hand cutting work in the corners that cannot be handled by turning work at the edge of the ridge, etc., gradually raise the cutting pretreatment unit to avoid contact with ridges When performing a so-called mowing operation, the shortest grain culm is conveyed at the end of the mowing operation, so the nipping / conveying device is maintained in the nipping release state until the next work is started after the mowing is completed. Therefore, dust from the threshing device blows out from this gap, and the handling cylinder that rotates at high speed faces the outside from the gap, so there is a problem in terms of safety, and there was room for improvement in this respect. . Therefore, as a method of eliminating such a defect, a change in the work load of the threshing device is detected by the engine speed or the rotation speed of the drive shaft of each part of the threshing device, and the all culm throwing state is determined based on the detection result. Although it may be possible to cancel the configuration, in this way, the power from the engine is supplied to not only the threshing device but also the airframe traveling drive system, and since the combine travels in the wetland, the traveling load may increase depending on the traveling state. However, there is a drawback in that the threshing work load cannot be accurately detected based on changes in the engine speed and the threshing drive speed due to such an increase in the traveling drive load.
The present invention aims to solve the above-mentioned problems.

[0004]

[Means for Solving the Problems] The characteristic configuration of the present invention is, in the combine harvester described at the beginning, a sandwiching and conveying state for conveying a harvested grain culm in the middle of a grain culm transporting route for threshing treatment, and a harvested grain culm. Establishing the all culm throwing device that can switch to the all culm throwing state in which all the culms of the harvested grain culms are thrown into the threshing device by releasing the sandwiching on the plant side, and the vibration status due to the load fluctuation of the threshing device is detected Vibration condition detection means,
And a short culm detection means for detecting that the culm length of the grain culm conveyed toward the threshing device is less than or equal to a set value, and based on the detection information of the short culm detection means, sandwiches the whole culm feeding device. There is a control means for switching from the conveying state to the all-culm insertion state and for returning the all-culm insertion device from the all-cule insertion state to the sandwiching-conveying state based on the detection information of the vibration condition detecting means. .

[0005]

When the short culm detecting means detects that the culm length of the transported grain culm is equal to or less than the set value during the cutting operation,
Since the whole culm throwing device is switched from the pinching and conveying state to the whole culm throwing state, it is possible to throw all such culms including the stalks into the threshing device for reliable handling. In this way, even if the culms are all put into the threshing device including the stem part (straw), the work load in the threshing device is increased, which causes vibration and noise of the threshing device. And so on. When the threshing process is finished after the grain culm cutting work is finished, the work load is reduced and the vibration and noise are reduced. Therefore, the vibration state of the threshing device that changes according to such a change in the handling throughput is detected, and based on the detection information, the all culm feeding device is automatically returned from the all culm feeding state to the nipping and conveying state. To control.

[0006]

[Effects of the Invention] Therefore, while it is possible to prevent the harmful effect that the extremely short culm is discharged in a state of being left unhandled,
Even if it is not a continuous high mowing work but a work form in which the shortest culm is conveyed at the end of mowing work, such as mowing work, after the treatment of the mowing grain culm is completed regardless of the machine traveling state The sandwiching / conveying device can be reliably returned to the normal sandwiching / conveying state at a reasonable timing, and the dust and the noise can be reduced, and the work safety can be improved. It was

[0007]

Embodiments will be described below with reference to the drawings. Figure 6
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 lifting cylinder 10.

The threshing device 2 holds the root side of the culm by a holding and conveying device 8 composed of a feed chain 8a which is rotationally driven and a holding rail 8b which is arranged opposite to the feed chain 8a, and conveys the tip side of the culm. The threshing device 2 is configured to handle.

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 in an appropriate state regardless of the culm length of the planted grain culm. That is, as shown in FIG. 1 and FIG. 6, 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 that prevents the cut grain culm of the extremely short culm generated in the cutting work at the edge of the ridge from being left unhandled. That is, the control unit 3 is provided with an instruction switch 15 for giving an instruction to start the cutting operation, and when the instruction switch 15 is operated, the pre-mowing processing unit 4 is automatically raised and the 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, a state in which the harvested grain culm is transported, and a state in which the planter side sandwiching of the harvested grain culm is released and all the culms of the harvested grain culm are put into the threshing device 2 All culm throwing device 16 that can be switched to the
When the long culm sensor S1 and the short culm sensor S2 both detect the absence of grain culm in the state where the culm is adjusted to the deepest handling side, the cut grain from the location where the sensor is arranged to the whole culm feeding device 16 is cut. After the culm transfer required time has elapsed, the control device 12 controls the all-cule insertion device 16 to switch from the sandwiched conveyance state to the all-culm insertion state. As shown in FIGS. 2 and 4, the sandwiching rail 8b pivotally connects a plurality of divided bodies by pivot pins 23, and the rods 24 connected to the pivot pins 23 are vertically slidable on the frame body 25. The coil springs 18 supported on the rod 24 and externally fitted to the rod 24 connect the respective pivot points to the feed chain 8
It is configured so as to be pressed and biased to the a side. Nip transport device 8
In the middle of the conveyance path by the rod, at a part of the pivot points of the holding rail 8b, which is urged by the spring 18 toward the feed chain 8a by the operating member 17 that is interlocked and rotated by the lift driving 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, when the nipping by the nipping rail 8b is released, the grain culm is also pulled in together with the culm portion by the handling barrel that is rotationally driven inside the threshing device 2 (see FIG. 3).

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 conveyance status from the location where the feed chain 8a is to be conveyed, and the rotation speed of the feed chain 8a is a substantially constant speed which is predetermined in the case of a normal load. Since the transport time to the release location is a constant value, it can be calculated by a timer.

As shown in FIGS. 1 and 6, a vibration detecting sensor 30 (an example of vibration status detecting means) for detecting vibration of the threshing device 2 is provided on the outer surface of the upper side of the threshing device 2, and this vibration detecting sensor is used. The detection value of 30 is provided to the control device 12.

The control procedure of the controller 12 will be described below. As shown in FIG. 5, first, the amplitude value of the vibration detected by the vibration detection sensor 30 during traveling of the machine body in the non-crop state prior to the cutting operation is set to the no-load amplitude value B0.
Is read and stored as [step 1]. And
In the cutting operation, it is detected that the stock origin sensor 14 is in the ON state and the grain stem is in the transport state, and the instruction switch 1
When 5 is operated, the cutting pretreatment unit 4 is raised and the handling depth motor M1 is operated to the deepest handling side to maintain the state [steps 2 to 5]. The instruction switch 15
When is not operated, normal depth control is executed [step 6]. Then, the conveyance state is detected from the detection information of the conveyance rotation sensor 19, and it is confirmed from the detection information of the supply position sensor 13 that the vertical conveyance device 9 is at the deepest handling side supply position, and the long culm sensor S1 and the short culm sensor. Sensor S
When it is detected that the two short culms have been conveyed while each of them is in the off state, the grain culm is detected from the detection information of the conveyance rotation sensor 19 from the places where the sensors S1 and S2 are provided to the feed chain 8a.
When it is determined that the paper has been conveyed to the start end, and when the time required for conveyance from the start end of the feed chain 8a to the all-culm insertion device 16 has elapsed from that point, the electric cylinder M2 is operated to switch to the all-cule insertion state [step 7-1
2]. After that, when it is detected that the vibration amplitude value B of the threshing device 2 detected by the vibration detection sensor 30 has decreased to the no-load amplitude value B0, the output to the electric cylinder M2 is stopped and the all culm insertion state is set. This is released and the holding and conveying device 8 is returned to the normal holding work state [Step 1
3, 14].

[Other Embodiments] As the vibration state detecting means, a noise level sensor for detecting vibration noise [voice information] caused by vibration of the threshing device may be used instead of the vibration detecting sensor. Further, as the short culm detecting means, as described above, a dedicated extremely short culm detecting sensor may be used instead of the one that also serves as the grain culm presence / absence sensor for adjusting the handling depth.

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 configuration of the accompanying drawings by the entry.

[Brief description of drawings]

FIG. 1 is a control block diagram.

[Fig.2] Side view of all culm throwing device

[Fig.3] Side view of all culm throwing device

FIG. 4 is a vertical sectional front view of the all culm throwing device.

[Fig. 5] Control flowchart

FIG. 6 is a side view of the front part of the combine.

[Explanation of symbols]

 2 Threshing device 8 Clamping / conveying device 12 Control means 16 All culm throwing device 30 Vibration state detecting means S2 Short culm detecting means

 ─────────────────────────────────────────────────── ─── Continuation of front page (72) Inventor Yoshiyoshi Fukuoka, 64, Ishizukitamachi, Sakai City, Osaka Prefecture Kubota Sakai Factory Co., Ltd. (72) Tokatsu Otani, 64, Ishizukitamachi, Sakai City, Osaka Kubota Sakai Manufacturing In-house (72) Koji Yamagata 64 Ishizukita-machi, Sakai City, Osaka Prefecture Kubota Sakai Factory Co., Ltd. (72) Inventor Seiya Ho, 64 Ishizu-kitamachi, Sakai City Osaka Prefecture Kubota Sakai Factory, Inc. (72) Inventor Shigeki Hayashi 64 Ishizukita-machi, Sakai City, Osaka Prefecture Kubota Sakai Factory Co., Ltd. (72) Inventor Sowa Terao 64, Ishizukita-machi, Sakai City Osaka Prefecture Kubota Sakai Factory Co., Ltd.

Claims (1)

[Claims] 1. The harvested grain culm is conveyed toward the threshing device (2), and the tip side is held inside the threshing device (2) while sandwiching and transporting the stock side with the sandwiching and conveying device (8). The combine harvester is configured to handle, and in the middle of the grain culm transport route for threshing treatment, the sandwiched transport state for transporting the harvested grain culms and the harvesting side by releasing the sandwiched side of the harvested grain culm A whole culm feeding device (16) that can be switched to a whole culm feeding state in which all culms of the culm are thrown into the threshing device (2) is provided, and a vibration state due to load fluctuation of the threshing device (2) is detected. It comprises a vibration condition detecting means (30) and a short culm detecting means (S2) for detecting that the culm length of the grain culm conveyed to the threshing device (2) is equal to or less than a set value, and the short culm detection Based on the detection information of the means (S2), the all culm throwing device (16) is pinched. Control means for switching from the holding / conveying state to the all-culm insertion state, and for returning the all-culm insertion device (16) from the all-cule insertion state to the nipping / conveying state based on the detection information of the vibration state detecting means (30). (12)
Is a combine harvester.