JP3347829B2 - 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. The present invention also relates to a combine having a dust feeding valve configured to send and guide a processed product along a grain culm conveying direction inside a handling room of a threshing apparatus.

[0002]

2. Description of the Related Art Conventionally, in the above-mentioned grain culm conveying structure of a combine, as shown in Japanese Utility Model Application Laid-Open No. 2-123837, for example, a grain stalk presence / absence sensor located on the stock side among the grain stalk presence / absence sensors is conventionally used. If an extremely short cereal culm that is undetectable is conveyed, the cereal culm presence / absence sensor detects the off state (absence of cereal culm), and if the state continues for a predetermined control dead time, threshing work is performed. There is a configuration in which the pinching state of the transported grain culm in the latter half of the transport path of the pinching transport device is released, and all the culms of the transported grain culm are put into the handling room.

[0003]

In the conventional structure, for example, in the case of approaching a ridge while performing a mowing operation, the pre-cutting processing unit is provided so as to avoid collision with the ridge. When the mowing work is performed while raising, the cutting height for the planted grain culm becomes extremely high.However, when such an extremely short cut grain culm is transported, the tip side is slightly moved to the handle cylinder in the handling room. In such a case, it is not possible to perform threshing simply by touching the stalks. It was done. However, according to the above configuration, the harvested grain culm is almost continuously pinched and conveyed, and in the threshing device, threshing is always being performed. If detected, the culm will be released and all culms including the stems will be thrown into the threshing machine, resulting in a sharp increase in the amount of processing waste such as straw chips in the threshing machine. As a result, there is a possibility that the accumulation of the processed material in the handling room increases, and the grain sorting efficiency may be significantly reduced. In this respect, there is room for improvement. An object of the present invention is to solve the above-mentioned disadvantages, to prevent the occurrence of unhandled extremely short culms, and to prevent a decrease in threshing processing ability.

[0004]

Characteristic feature of the SUMMARY OF THE INVENTION The present invention provides a combined listed at the beginning, in the middle grain稈搬feed path for threshing grain processing, and culms conveyance state for conveying the cutting culms, preparative cutting In addition to providing a total culm input device that can be switched to a total culm input state in which all culms of the cereal culm are input to the threshing device,
If the culm length of the cereal culm conveyed toward the threshing device is equal to or less than a set value, the all culm input device is supplied from the cereal culm conveying state to all culms when the feed opening of the dust valve is variably adjusted and provided. It is provided with control means for switching to the state and changing the feed opening of the dust feed valve to the open side.

[0005]

[Action] During harvesting work, if a very short culm length culm is transported that cannot be effectively handled and handled by holding it as it is, the entire culm provided in the culm conveying path for threshing is provided. since稈投input device is switched from the conveyance state to the entire culm closed state, it is possible to introduce such a very short culm in threshing apparatus, it is possible to effectively prevent the occurrence of leaving ironing is provided in the threshing chamber Since the opening of the dust valve is automatically adjusted to the open side, even if the amount of the processed material in the handling room increases, the feeding action becomes stronger and the stagnation of the processed material in the handling room is minimized. be able to.

[0006]

As a result, while preventing the occurrence of unhandled culm for extremely short culm, the stagnation of the processed material in the handling room can be suppressed, and a decrease in the grain sorting ability can be prevented.

[0007]

Embodiments will be described below with reference to the drawings. FIG.
As shown in FIG. 0, a harvester 4 is connected to a front part of a body provided with a pair of right and left crawler traveling devices 1, a threshing device 2, a control unit 3, and the like so as to be able to move up and down around a horizontal axis P to form a combine. It is. The cutting unit 4 includes a raising device 5 for raising the planted grain culm, a cutting blade 6 for cutting the root of the raised planted grain culm, and an auxiliary transport device for collecting the harvested cereal stem and transporting the harvested culm rearward. 7. A vertical transport device 9 and the like, which are transferred to the pinching transport device 8 of the threshing device 2 while gradually turning the grain stem down, are configured to be vertically moved and oscillated by driving a lifting cylinder 10. In a normal mowing operation, the mowing unit 4 is controlled to move up and down so as to maintain the set height with respect to the ground. However, the mowing unit 4 can be moved up and down by a manual operation of an elevating lever 11 provided on the control unit 3. When the mowing unit 4 is raised above the set height, the mowing unit 4 is mechanically linked.
And a cutting automatic stop mechanism for automatically shutting off power to the cutting unit 4 to stop driving the cutting unit 4. 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 for processing.

The vertical conveying device 9 comprises a stock conveying device 9a for pinching and conveying the stem side of the grain culm, a head conveying device 9b for locking and conveying the ear side of the grain culm, and a spike guide plate 9c. 4 is supported so as to be swingable 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 portion from the 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 FIG. 1 and FIG. 10, 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. As described above, the control device 12 having a microcomputer as a control means automatically controls the handling depth motor M1. The two sensors S1 and S2 are provided in a switch type that swings and turns on when a grain culm comes into contact, and the grain stalk presence / absence sensor S1 (hereinafter, referred to as a long culm sensor) located on the tip side is in an off state. The handling depth motor M1 is controlled so that the grain stalk presence / absence sensor S2 (hereinafter, short stalk sensor) located on the side is turned on. At the swinging fulcrum of the vertical transport device 9, a potentiometer type supply position sensor 13 for detecting the current adjustment position of the vertical transport device 9 is provided. A stock sensor 14 is provided for detecting whether or not the operation has been performed.

As shown in FIG. 5, the threshing apparatus 2 is constructed so as to handle and process the tip side of the grain culm by a handling drum 31 which is driven and rotated around an axis along the longitudinal direction of the machine in a handling room 30 as shown in FIG. The processed material that has been handled and leaked from the receiving net 32 is sorted by the lower swing sorting device 33 into second grains and straw chips. The swing sorting device 33 includes a chaff sieve 34 for roughly sorting the treated material leaked from the receiving net 32, a grain sieve 35 for grain sorting, a first-item collecting unit 36, a second-item collecting unit 37, and the like. It is equipped with a Karamin 38 that blows off to the rear.

As shown in FIG. 8, the upper inner wall of the handling chamber 30 is formed in an inclined position slightly toward the grain culm transport direction with respect to the rotation direction of the handling drum 31, and the processed material is placed on the lower side in the transport direction. The dust sending valve 39 for feeding and feeding is configured so that the feed angle can be changed and adjusted by an electric motor M3. As shown in FIG. 6, the chief sheave 34 is similarly configured so that the electric motor M4 can integrally change and adjust the inclination posture (opening degree) of each chief plate. As shown in FIG. 7, the outer wall 38a of the Karino 38 is configured to be openable and closable by an electric motor M5 so that the amount of air for sorting by the Karino 38 can be changed and adjusted.

[0011] 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 grain culm generated in the cutting operation from being left behind. That is, an instruction switch 15 is provided for giving an instruction to start the mowing work to the control unit 3. When the instruction switch 15 is operated, the mowing unit 4 is automatically raised and the handling depth motor M1 is moved to the deepest position. It is configured to operate on the handling side.
Also, in the state of transporting the harvested grain culm during the course of the grain culm transport path for threshing processing, and in the state in which the root side of the harvested grain culm is released and the entire culm of the harvested grain culm is thrown into the threshing device. When the switchable whole culm input device 16 is provided and the long culm sensor S1 and the short culm sensor S2 both detect the absence of grain culm in a state where the handling depth motor M1 is adjusted to the deepest handling side, from the sensor arrangement設箇plants, construction of the after conveying time required for cutting culms reaching the total稈投input device 16 has elapsed, the control unit 12 controls to switch between full稈投input device 16 from the conveyance state to the entire culm closed state There is. 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. In the middle of the conveying path by the nipping and conveying device 8, a rod 18 is provided at a part of the pivot points of the nipping rail 8b which is pressed and urged toward the feed chain 8a by a spring 18 by an operating member 17 interlocked with the electric cylinder M2. The whole culm input device 16 is configured so that the culm holding action with the feed chain 8a can be partially released by lifting the 24 upward. 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 rotation of the handling drum 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 the drive shaft portion of the vertical transfer device 9. Based on the detected value of the transfer rotation sensor 19, the sensor S1 of the stock transfer device 9a is used. , S2 to determine the transfer status from the disposition point to the transfer end portion, and since the rotation speed of the feed chain 8a is a predetermined constant speed, the transfer time from the transfer start end portion of the feed chain 8a to the pinch release position is determined. Since is a constant value, it can be determined by a timer.

Hereinafter, the control procedure of the control device will be described. As shown in FIG. 9, it is detected that the stock sensor 14 is in the on state and the grain stalk is in the transport state, and when the instruction switch 15 is operated, the operation of the automatic reaping stop mechanism is suppressed and the reaping unit is controlled. 4 and the handling depth motor M1
Is operated to the deepest handling side to maintain the state [Steps 1 to 5]. Incidentally, when the instruction switch 15 is not operated, normal handling depth control is executed [step 6].
Then, the conveyance state is detected from the detection information of the conveyance rotation sensor 19, and the detection information of the supply position sensor 13 confirms that the vertical conveyance device 9 is at the deepest handling side supply position,
When it is detected that the very short culm has been conveyed while each of the long culm sensor S1 and the short culm sensor S2 is in the off state, the grain culm is detected from the position where the sensors S1 and S2 are provided based on the detection information of the conveyance rotation sensor 19. It is determined that the sheet has been conveyed to the start end of the feed chain 8a.
When the time required for transportation from the start end of the to the entire culm input device 16 has elapsed, the electric cylinder M2 is operated to switch to the all culm input state [steps 7 to 12]. At the same time as switching to the above-mentioned all-culm loading operation, the feed opening of the dust feed valve 39 is automatically changed to the open side to reduce the stagnation of the processed material in the handling chamber 30, and the opening of the chaff sheave 34. Is automatically adjusted to the closing side to reduce the possibility of mixing of straw chips into the first object collecting section 36, and to increase the air volume of Karamin 38 to discharge the straw chips as much as possible [Step 12].
~ 15]. Then, when the transport of the very short culm is completed during the entire culm loading operation and one of the long culm sensor S1 or the short culm sensor S2 is turned on, the culm is conveyed to the start end of the feed chain, and after a lapse of the transport time required in chain 8a, return to the normal conveyance state to stop the lift operation of the electric cylinder M2 [step 16
19].

[Another Embodiment] The detection of the extremely short culm is performed by using a grain culm presence / absence sensor for adjusting the handling depth. A configuration may be adopted in which a dedicated ultra-short culm sensor for detecting that the culm is short enough to prevent the handling process by 31 can be performed.

The whole culm feeding device 16 is different from the structure in which the nipping rail 8b of the nipping and conveying device 8 is lifted as shown in FIG.
As shown in the figure, the cutting blade is positioned at the transfer start end of the holding and conveying device 8 closer to the handling chamber than the holding point, and the cutting blade is provided so as to be freely switchable between a position acting on the conveying grain and a non-operating position retracting upward. Alternatively, the configuration may be such that the extremely short culm is cut and all culms are introduced into the handling room.

[0016] In the claims, reference numerals are provided for facilitating 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 simplified side view of the threshing apparatus.

FIG. 6 is a diagram showing an arrangement for adjusting the opening of a chaff sheave.

FIG. 7 is a diagram showing a configuration for controlling the amount of Kara Minoh wind;

FIG. 8 is a diagram showing a dust valve adjustment configuration.

FIG. 9 is a control flowchart.

FIG. 10 is a side view of the front part of the combine.

FIG. 11 is a side view of a whole-culm loading device according to another embodiment.

[Explanation of symbols]

 2 Threshing device 8 Nipping and conveying device 12 Control means 16 Whole culm loading device 30 Handling room 39 Dust valve

──────────────────────────────────────────────────の Continuing on the front page (72) Inventor Tokumune Ozaki 64 Ishizukita-cho, Sakai City, Osaka Prefecture Inside the Kubota Sakai Plant (72) Inventor Toshikatsu Otani 64 Ishizukitacho, Sakai City, Osaka Prefecture 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 Suezo Ueda 64, Ishizukita-cho, Sakai City, Osaka Prefecture (72) Inside the Kubota Sakai Factory (72) Inventor Toshio Tominaga 64, Ishizukitamachi, Sakai City, Osaka Prefecture, inside Kubota Sakai Factory (72) Inventor, Yoshiaki Takeuchi Sakai, Osaka 64 Ishizu-Kitacho, Ishizu-shi Kubota Sakai Works Co., Ltd. (56) References JP-A-63-279718 (JP, A) JP-A-63-222612 (JP, A JP-A-61-234714 (JP, A) JP-A-54-146756 (JP, A) JP-A-2-1223837 (JP, U) JP-A-61-2032 (JP, U) (58) Field (Int.Cl. ⁷ , DB name) A01F 12/10 A01D 41/02 A01D 61/00 A01F 12/00

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 configured to handle and process, and provided with a dust valve (39) for feeding and guiding the processed material along the grain culm transport direction inside the handling chamber (30) of the threshing device (2), during grain稈搬feed path for threshing grain processing, freely switching the culms conveyance state for conveying the harvesting culms, and full culm on state to put all the culms of the bush ToKoku稈threshing device (2) to In addition to providing a whole culm input device (16), the dust valve (3
The feed opening of 9) is provided so as to be changeable and adjustable. If the culm length of the cereal culm conveyed toward the threshing device (2) is equal to or less than a set value, the whole culm input device (16) is brought into the cereal culm conveying state. And a control means (12) for changing the feed opening of the dust feed valve (39) to the open side while switching to the whole culm input state.