JP3347831B2 - Combine - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention conveys a harvested grain stalk toward a threshing device, and handles the spike side inside the threshing device while nipping and transporting the stock side by a clamping and conveying device. A combine configured as described above.

[0002]

2. Description of the Related Art Conventionally, in the above-mentioned combine, for example, as disclosed in Japanese Utility Model Laid-Open No. 2-123837,
When an extremely short cereal culm that cannot be detected by the cereal culm presence sensor located on the side of the stock among the cereal culm presence / absence sensor is conveyed, the cereal culm presence / absence sensor is turned off (the absence of cereal culm) ) Is detected, the pinching state of the transported grain culm in the second half of the transport path of the pinching transport device for threshing work is released, and all the culms of the transported grain culm are put into the handling room, and the grain culm is configured to be released. In some cases, when the presence / absence sensor detects a grain culm, all culms are released.

[0003]

In the conventional structure, when the cutting height of the planted grain culm becomes extremely high, if such an extremely short cut grain culm is transported, the handling room is not used. In this case, sufficient threshing cannot be performed if the tip side slightly touches the handling cylinder, so in such a case, release throat and release all culms into the handling room to perform threshing. It is designed to reduce unhandled items. However, in the above configuration, the pinching and transporting device is released based on the detection result of the cereal stalk presence / absence sensor disposed on the starting end side of the cereal stalk transport path in the pre-cutting processing unit, and the cereal stalk presence / absence sensor is turned off. When a culm is detected, that is, when a long culm is conveyed, control is performed so as to return to a normal nipping and conveying state. In other words, in order to eliminate hand-cutting work at corners that cannot be handled by round-cutting work at the edge of a ridge, etc., the planting grain culm at this point is raised while gradually raising the pre-cutting part to avoid contact with the ridge. In the case of performing a so-called mowing operation for cutting, the shortest culm is conveyed at the end of the mowing operation, so that the nipping transport device is maintained in the unpinching state until the next operation is started after the mowing is completed. As a result, dust from the threshing device blows out from this gap, and the handling cylinder that rotates at high speed faces outward from the gap, so there is a problem in terms of safety, and there is room for improvement in this respect. . An object of the present invention is to solve the above-mentioned disadvantages.

[0004]

Characteristic feature of the present invention, in order to solve the problem] is the combined listed at the beginning, in the middle grain稈搬feed path for threshing process, and nipped and conveyed state for conveying the cutting culms, cutting ToKoku稈In addition to providing an all-culms input device that can be switched to an all-culms input state in which all the culms are input to the threshing device,
Threshing speed detection means for detecting the rotation speed of the drive shaft in the threshing device, and short culm detection means for detecting that the culm length of the grain culm transported toward the threshing device is less than or equal to a set value, Based on the detection information of the short culm detection means, the entire culm input device is switched from the pinch and transport state to the all culm input state, and thereafter, when the detection value of the threshing speed detection means recovers to a set rotation speed, The point is that control means is provided for returning the culm introduction device from the entire culm introduction state to the nipping and conveying state.

[0005]

When the short culm detecting means detects that the culm length of the transported cereal culm is less than the set value during the mowing operation,
Since the entire culm input device switches from the nipping and transporting state to the all culm input state, all the culms including such a short cereal culm including the stem portion can be input into the threshing device and the processing can be reliably performed. And, as described above, even if the stem is a short culm, the entire stem portion (straw) is also put into the threshing device, so that the workload on the threshing device increases, and as a result, the threshing device on which the workload directly acts , The rotation speed of the drive shaft temporarily decreases, and when the threshing process ends, the rotation speed returns to the original rotation speed. Therefore, when such a change in the rotation speed of the drive shaft is detected and the detected value recovers to the set rotation speed,
Assuming that the threshing process of the short culm has been completed, the control is performed so that the all-culm input device is automatically returned from the all-culm input state to the holding and conveying state.

[0006]

Therefore, while being able to prevent the harmful effects such as the extremely short culm being discharged while being left unhandled,
Even if the shortest culm is conveyed at the end of the mowing operation, such as a mowing operation, rather than a continuous high mowing operation, the nipping and conveying device is normally held at a reasonable timing at the end of such operation. It was possible to return to the transport state, reduce dust emission and noise, and improve work safety.
Note that a configuration in which a change in the work load of the threshing device is detected based on the engine speed is also conceivable.
The power from the engine is supplied not only to the threshing device but also to the aircraft traveling drive system.In the combine, traveling in wetlands may increase the traveling load depending on the traveling condition. In addition to the drawback that accurate detection of the threshing work load cannot be performed because of the change in the engine speed, errors due to slippage of the power transmission belt and the like occur. Since it is configured to detect, it is hardly affected by the load of the traveling drive system or the belt slip.

[0007]

Embodiments will be described below with reference to the drawings. FIG.
As shown in the figure, a cutting pre-processing unit 4 is provided at the front of a body including a pair of right and left crawler traveling devices 1, a threshing device 2, a control unit 3, and the like.
Are combined so as to be able to move up and down around the horizontal axis P to form a combine. The power of the engine mounted on the fuselage is supplied to the threshing device 2 via a belt tension type threshing clutch (not shown), and is also supplied to each crawler traveling device 1 and the pre-cutting unit 4 via a transmission belt and a transmission. The transmission system is configured as follows. The pre-cutting processing unit 4 includes an elevating device 5 that causes the planted grain culm, a cutting blade 6 that cuts the root of the planted grain culm that has been raised, and an auxiliary that collects the harvested grain culm and conveys it backward. The transporting device 7 includes a vertical transporting device 9 and the like that transfers the culm to the sandwiching transporting device 8 of the threshing device 2 while gradually turning over the grain stem, and is configured to be vertically moved and oscillated by driving a lifting / lowering cylinder 10. In the threshing device 2, the pinch side of the grain culm is pinched and conveyed by a pinching and conveying device 8 comprising a rotatingly driven feed chain 8 a and a pinching rail 8 b provided opposite to the threshing device. 2
It is configured to handle and process within.

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 transferring the spike side of the grain culm, and a tip guide plate 9c. The processing unit 4 is swingably supported around the same axis as the swing axis P, and is provided so as to be swing-adjustable by an electric motor M1 with a gear type reduction mechanism (hereinafter referred to as a handling depth motor). The receiving and holding point from the auxiliary transport device 7 is changed in the culm length direction, and the handling depth in the threshing device 2 can be changed and adjusted. Then, the handling depth motor M1 is automatically controlled so that the handling depth is always in an appropriate state regardless of the stem length of the planted grain culm. That is, as shown in FIGS. 1 and 6, a pair of grain stalk presence / absence sensors S1 and S2 for detecting culm length are provided in the transport path of the harvested grain culm, and the ear of the grain culm is located between these two sensors S1 and S2. The control unit 12 having a microcomputer as a control means automatically controls the handling depth motor M1 so as to be located. The two sensors S1 and S2 are provided in a switch type that swings and turns on when the grain culm contacts, and a grain stalk presence / absence sensor S1 (hereinafter, referred to as a long culm sensor) located on the tip side.
Is off, the grain stalk presence / absence sensor S2 located on the stock side
The handling depth motor M1 is controlled so that [an example of short culm detection means, hereinafter referred to as a short culm sensor] is turned on. At the swing fulcrum of the vertical transport device 9, a potentiometer type supply position sensor 13 for detecting which position the current adjustment position of the vertical transport device 9 is located is provided.
A stock sensor 14 for detecting whether or not cereal stems are being transported is provided in the transport path.

[0009] The combine is provided with a structure capable of automatically performing the cutting operation at the edge of the ridge, and of preventing the extremely short culm harvested culm generated during the cutting operation from being left unhandled. That is, an instruction switch 15 for giving an instruction to start the mowing operation to the control unit 3 is provided, and when the instruction switch 15 is operated, the pre-cutting unit 4 is automatically raised, and
It is configured to operate the handling depth motor M1 to the deepest handling side. Also, in the course of the culm conveyance path for threshing processing, the nipping and conveying state for conveying the harvested corn culm, and release of the culled culm at the root side of the culm, and the entire culm of the culled corn culm is thrown into the threshing apparatus 2. all
The whole culm input device 16 that can be switched between the culm input state and the culm input state is provided, and the long culm sensor S1 and the short culm sensor S2 both have no grain culm in a state where the handling depth motor M1 is adjusted to the deepest handling side. Is detected, after the required time for transporting the harvested grain culm from the sensor arrangement location to the all-culm input device 16 has elapsed, the control device 12 causes the all-culm input device 16 to be brought into the all-culm input state from the nipping and transporting state. It is configured to control switching. As shown in FIGS. 2 and 4, the sandwiching rail 8 b pivotally connects the plurality of divided bodies with the pivot pins 23 and slides the rods 24 connected to the pivot pins 23 up and down on the frame body 25. , And each of the pivot points is pressed and urged toward the feed chain 8a by a coil spring 18 fitted to the rod 24. One of the pivot points of the holding rail 8b, which is pressed and urged toward the feed chain 8a by a spring 18 by an operating member 17 which is interlocked and rotated by a lift driving electric cylinder M2 in the middle of the conveying path by the holding and conveying device 8. In the section, the rod 24 is lifted upward to partially release the culm clamping action with the feed chain 8a, thereby constituting the whole culm input device 16. That is, by releasing the holding by the holding rail 8b, the grain culm is pulled into the inside together with the culm portion by the handling drum 30 that is rotated inside the threshing device 2 (see FIG. 3).

A transport rotation sensor 19 for detecting the rotation state of the stock transfer device 9a is provided on a drive shaft portion of the vertical transport device 9,
Based on the detection value of the transfer rotation sensor 19, the stock transfer device 9a
The feed chain 8 is configured to determine the transfer status from the location where the sensors S1 and S2 are provided to the transfer end portion.
Since the rotation speed of a is a predetermined substantially constant speed in the case of a normal load, the transport time from the transport start end of the feed chain 8a to the pinching release point is a constant value, and thus can be obtained by a timer. As shown in FIG. 1, a handling cylinder rotation sensor 32 [an example of threshing speed detecting means] for detecting the rotation speed of the drive shaft 31 of the handling cylinder 30 is provided, and changes due to the work load of the threshing device 2. It is configured to detect the number of rotations of the handling cylinder to be performed.

The control procedure of the control device will be described below. As shown in FIG. 5, first, the detection value of the handle cylinder rotation sensor 32 during the running of the machine before the start of the threshing operation is read and stored as the no-load rotation speed N0 [Step 1]. Next, in the harvesting operation, it is detected that the stock sensor 14 is turned on and the grain stalk is being transported, and when the instruction switch 15 is operated, the mowing pre-processing unit 4 is raised and the handling depth is increased. Then, the motor M1 is operated to the deepest handling side to maintain the state [Steps 2 to 5]. Incidentally, when the instruction switch 15 is not operated, normal handling depth control is executed [step 6]. Then, the transport rotation sensor 19
From the detection information, and from the detection information of the supply position sensor 13, it is confirmed that the vertical conveyance device 9 is at the supply position on the deepest handling side, and each of the long culm sensor S1 and the short culm sensor S2 is turned off. When it is detected that the very short culm has been conveyed in this state, it is determined from the detection information of the conveyance rotation sensor 19 that the grain culm has been conveyed from the location where each of the sensors S1 and S2 is provided to the start end of the feed chain 8a. From that point on, the whole culm feeding device 1 from the beginning of the feed chain 8a.
When the transfer time up to 6 elapses, the electric cylinder M2
To switch to the state of all culms input [Step 7-
12]. Then, after that, when it is detected that the handling cylinder rotation speed N has returned to the no-load rotation speed N0 based on the detection value of the handling cylinder rotation sensor 32, the output to the electric cylinder M2 is stopped and the whole culm input state is changed. Release and pinch transport device 8
Is returned to the normal clamping work state [Step 13,
14].

Instead of the cylinder rotation sensor, the rotation speed of the drive shaft of the other threshing device such as the drive shaft of the screw for recovering the first object or the drive shaft of the screw for recovering the second object in the swing sorting device is detected. It is good also as a structure which performs. As the short culm detection means, a dedicated ultra-short culm detection sensor may be used instead of the one that also serves as the grain culm presence / absence sensor for adjusting the handling depth as described above.

[0013] In the claims, reference numerals are provided to facilitate 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 control block diagram.

FIG. 2 is a side view of the whole culm loading device.

FIG. 3 is a side view of the whole culm loading device.

FIG. 4 is a longitudinal sectional front view of the whole culm loading device.

FIG. 5 is a control flowchart.

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

[Explanation of symbols]

 2 Threshing device 8 Nipping and conveying device 12 Control means 16 Whole culm loading device 31 Drive shaft 32 Threshing speed detection means S2 Short culm detection means

──────────────────────────────────────────────────の Continued on the front page (72) Inventor Yoshigo Fukuoka 64 Ishizukita-cho, Sakai-shi, Osaka Inside the Kubota Sakai Factory (72) Inventor Toshikatsu Otani 64 Ishizukita-cho, Sakai-shi, Osaka Kubota Sakai Manufacturing Co., Ltd. Office (72) Inventor Koji Yamagata 64 Ishizu-Kitamachi, Sakai City, Osaka Prefecture Inside Kubota Sakai Works, Ltd. (72) Inventor Tamotsu Seiya 64 Ishizu-Kitamachi, Sakai City, Osaka Prefecture Inside Kubota Sakai Works, Ltd. (72) Inventor Shigeki Hayashi 64, Ishizukita-cho, Sakai-shi, Osaka Inside the Kubota Sakai Factory (72) Inventor Towa Terao 64, Ishizukita-machi, Sakai-shi, Osaka Prefecture Inside the Kubota Sakai Factory (56) References 123837 (JP, U) Japanese Utility Model Showa 49-22038 (JP, U) Japanese Utility Model Showa 59-59836 (JP, U) Japanese Utility Model Showa 59-150235 (JP, U) Japanese Patent Publication No. 49-34493 (JP) , B1) (58) Field surveyed (Int. Cl. ⁷ , DB name) A01F 12/10 A01F 12/56

Claims (1)

(57) [Claims] 1. The harvested grain culm is conveyed to a threshing device (2), and the spike side is held inside the threshing device (2) while being pinched and conveyed by a pinching and conveying device (8). a combine that is configured to squeezing process, during grain稈搬feed path for threshing process, and nipped and conveyed state for conveying the cutting culms, threshing apparatus all culms of the bush ToKoku稈(2)
A threshing rotational speed detecting means (32) for detecting the rotational speed of the drive shaft (31) in the threshing device (2), while providing a whole culm loading device (16) that can be switched to a whole culm loading state to be thrown into the hull. A short culm detecting means (S2) for detecting that the culm length of the cereal culm conveyed toward the threshing device (2) is equal to or less than a set value, wherein the detection information of the short culm detecting means (S2) is included. The whole culm input device (16) is switched from the nipping and transporting state to the all culm input state based on the above, and thereafter, the threshing speed detecting means (32)
A combiner provided with a control means (12) for returning the whole culm input device (16) from the full culm input state to the nipping and conveying state when the detected value of (i) recovers to the set number of revolutions.