JP3350168B2 - Combine - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a cutting pre-processing unit which is connected to a front part of an airframe so as to be able to move up and down around a horizontal axis, and conveys a harvested grain stem toward a threshing apparatus, and pinches and conveys. A combine that is configured to handle and process the tip side inside the threshing device while nipping and transporting the stock side by the device, and to have a lifting mechanism for vertically moving the left and right traveling devices relative to the body frame separately. .

[0002]

2. Description of the Related Art Conventionally, in the above-mentioned combine, for example, as disclosed in Japanese Utility Model Laid-Open No. 4-124,035,
When the detector that detects the cutting height in the pre-cutting section detects a high cutting state at the ridge, the handling depth is adjusted to the deeper side, and the holding state of the holding and conveying device for threshing work is released. Some were configured to do so. Note that the crawler traveling device has a configuration in which the body posture of the crawler traveling device is maintained constant.

[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, in this type of combine, the pre-cutting section is provided so as to be able to move up and down around the axis of the horizontal axis, and furthermore, a weeding tool and a raising device are present at the tip thereof. It will be located behind the fuselage and the raising device. Therefore, in the above-described cutting operation of the pre-cutting processing unit, even if the cutting operation is performed while raising the weeding tool located at the tip of the pre-cutting processing unit so as not to contact the ridge, one point of the pre-cutting processing unit Due to the swing, the position of the cutting blade is lower than the height of the weeder, so the worker performs the cutting operation while increasing the amount of lifting in advance so that the cutting blade does not contact the ridge and is not damaged. There is a need. In addition, since the cutting blade is disposed at a position below the pre-cutting processing unit, it is difficult to visually determine the cutting blade, and there is a disadvantage that the raising operation of the pre-cutting processing unit is difficult to perform. Moreover, when the ridges are relatively high, the culm length of the harvested grain culm becomes shorter, the total culm input amount increases as described above, and there is a problem that the threshing work load becomes excessive. There was room for improvement. An object of the present invention is to improve the maneuverability during a mowing operation by using a separate elevating structure of a traveling device and an elevating structure of a pre-cutting unit provided for correcting a lateral inclination posture of a body during a mowing operation. In addition to improving the threshing work load as much as possible, there is a need to suppress the occurrence of unhandled products.

[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, the culms conveyance state for conveying the cutting culms, cutting ToKoku In addition to providing an all-culms input device that can be switched to an all-culms input state where all the culms of the culms are input to the threshing device,
Short culm detecting means for detecting that the culm length of the cereal culm conveyed toward the threshing device is equal to or less than a set value, and ground height detecting means for detecting a ground height on a front side of the pre-cutting unit. Anti-aircraft height detecting means for detecting an anti-aircraft height of the pre-cutting processing unit, and a harvesting operation state for detecting that the harvesting operation state in which the cutting operation is performed while gradually increasing the cutting height of the grain culm. Detecting means, the mowing work state detecting means performs a detecting operation, and when the ground height detecting means detects that the ground height has been set, the traveling device relatively descends to a set position. When the lifting mechanism is driven, the cutting pre-processing unit is driven up and down so that the detection value of the anti-machine height detection means becomes a set value, and thereafter, when the short culm detection means detects and operates, the entire culm is detected. Grain input device Lies in that is provided with a control means for switching from the transport state into the entire culm closed state.

[0005]

[Action] When performing a mowing operation in which the mowing work is performed while gradually increasing the mowing height of the grain stalk near the ridge during mowing work, it can be used for continuous ascent operation of the pre-cutting processing unit, operation of a special switching operation tool, etc. When it is detected that the harvesting work state is based on the above, each of the lifting and lowering mechanisms is driven so that the left and right traveling device relatively descends to the set position, and the height of the machine body of the pre-cutting unit becomes the set value. Since the mowing pre-processing unit is automatically driven up and down at the same time, the mowing pre-processing unit is controlled to move up and down while maintaining an appropriate space between the ridges while the whole body relatively rises to the ground. As a result, only the tip of the pre-cutting unit is passed over the ridge so as to reach the set level, and thereafter, the automatic ascent control is automatically performed to an appropriate level, and the lowermost position of the pre-cutting unit is set at the lowermost position. The risk of contact with the ridge can be automatically avoided. In addition, when it is detected that the culm length of the transported grain culm is less than the set value in such a harvesting operation, all culms are put into the state, so that all short culms, including the stem portion, are threshed and left untreated. Can be avoided.

[0006]

As a result, in the harvesting operation near the ridge, the occurrence of unhandled short culm can be suppressed, but the artificial commanding operation of the pre-cutting section for the lifting operation of the body is not required, and the pre-cutting operation is not required. Avoidance operations that reduce the risk of contact with the ridges of the processing unit can now be handled with simple maneuvering operations. In addition, as described above, the climbing operation of the pre-cutting processing unit for the ridges is automatically controlled, so that compared to the artificial raising and lowering operation, it is possible to cut the planted grain culm at a lower level, which is caused by the introduction of all culms. There is also an advantage that the increase in the threshing work load can be suppressed as much as possible.

[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 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. A transport device 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 over the grain stems,
The lift cylinder CY1 is configured to swing up and down by being driven. In a normal mowing operation, the mowing pre-processing unit 4 is controlled to move up and down so as to maintain a set height with respect to the ground, and can be moved up and down by manual operation of an elevating lever 11 provided in the control unit 3. In other words, an ultrasonic sensor 26 (an example of a ground height detecting means) for detecting a ground height is provided in a lower part on the front side of the mowing pre-processing unit 4, and as shown in FIG. Is controlled by a control device 12 having a microcomputer as a control means so that the lift cylinder CY1 becomes a set value.
Then, switches SW1 and SW2 for detecting respective operation positions by raising or lowering the lifting lever 11
The control device 12 forcibly raises and lowers the pre-cutting unit 4 in preference to the above-mentioned raising and lowering control.

A lifting / lowering angle sensor 27 of a potentiometer type is provided at the lifting / lowering fulcrum of the mowing pre-processing unit 4 as means for detecting the height of the vehicle relative to the body.

As shown in FIG. 8, the left and right crawler traveling devices 1, 1 are composed of hydraulic rolling cylinders CY2, CY2.
[Example of a driving mechanism] is configured to be individually driven to ascend and descend relative to the body frame 10. That is,
A drive arm 22 that pivotally connects the track frame 1a on the crawler traveling device side to the body frame 10 through front and rear swing arms 21 and 21 and is connected to the swing arms 21 and 21 so as to be integrally rotatable. , 22 are driven and oscillated by a hydraulic rolling cylinder CY2 so that the crawler contact portion 1b
Are configured to be driven up and down with respect to the aircraft. The rolling cylinders CY2 and CY2 are controlled by the control device 12 based on the horizontal inclination information of the aircraft by the horizontal inclination sensor 20 provided to the aircraft so that the aircraft is always kept in a horizontal attitude, and automatic rolling control is executed. It is configured as follows. Further, a crawler lift sensor 28 is provided which detects the amount of expansion and contraction of the rolling cylinders CY2 and CY2 as data of the body height of each of the left and right crawler traveling devices 1 and 1.

[0010] In the threshing apparatus 2, the pinch side of the grain culm is conveyed while being pinched and conveyed by a pinching and conveying apparatus 8 composed of a feed chain 8a that is driven to rotate and a pinching rail 8b that is provided opposite to the feed chain 8a. Is processed in the threshing device 2 for processing. The vertical transport device 9 includes a root transport device 9a for nipping and transporting the root side of the grain culm, an ear transport device 9b for locking and transporting the tip side of the grain culm, and a tip guide plate 9c. Is supported so as to be swingable around the same axis as the swing axis P, and is provided so as to be swingable 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 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. In other words, 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 control device 12 handles the grain culm so that the tip of the grain culm is located between the two sensors S1 and S2. The depth motor M1 is automatically controlled. 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 such that the grain stalk presence / absence sensor S2 (an example of short stalk detection means, hereinafter referred to as a short stalk sensor) located on the side is turned on.
At the swinging fulcrum of the vertical conveying device 9, a potentiometer type supply position sensor 13 for detecting the current adjustment position of the vertical conveying device 9 is provided. Stock sensor 14 for detecting whether or not culms are being conveyed
Is provided.

[0011] The combine is provided with a structure for preventing the extremely short culm harvested grain culm, which is generated during the mowing operation in which the culm is raised while gradually increasing the culm height at the ridge, from being left behind. . In other words, in the course of the grain culm transport route for threshing processing, the grain culm transport state in which the harvested grain culm is transported, and the root side of the harvested grain culm is released to thresh all the culms of the harvested grain culm. The apparatus is provided with a whole culm insertion device 16 which can be switched to a whole culm insertion state to be put into the apparatus, and the long culm sensor S1 and the short culm sensor S2 are both in a state where the handling depth motor M1 is adjusted to the deepest handling side. When the absence of the grain culm is detected and the culm length of the grain culm to be conveyed is detected to be equal to or less than the set value, the transport of the harvested grain culm from the sensor installation location to the all-culm input device 16 is performed. After the required time has elapsed, the control device 12 controls the entire culm input device 16 to switch from the grain culm transport state to the all culm input state. still,
The control device 12 is configured to detect the state of the mowing operation when the forcible lifting operation of the pre-cutting unit 4 has continued for a set time or more during the mowing operation. Therefore, the mowing work state detecting means A is provided in the control device in the form of a control program.

As shown in FIG. 6, the holding rail 8b pivotally connects a plurality of divided bodies by pivot pins 23, and allows a rod 24 connected to each pivot pin 23 to be vertically slidable on a frame body 25. And the rod 24
Each pivot point is pressed and urged toward the feed chain 8a by a coil spring 18 externally fitted on the shaft. In the middle of the transport path by the nipping transport device 8, the pivot member 17 of the nipping rail 8b which is pressed and urged toward the feed chain 8a side by the spring 18 by the rotating member 17 interlocked with the lift driving electric cylinder M2. In the latter half of the transport route, the whole culm input device 16 is configured so that the plurality of rods 24 are lifted upward to partially release the culm clamping action with the feed chain 8a. . 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. 7).

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 transfer device 9, and the sensor S1 of the stock transfer device 9a is detected based on the detected value of the transfer rotation sensor 19. , 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, a control procedure of the control device 12 will be described. As shown in FIGS. 2 and 3, when the forcible raising operation by the raising / lowering lever 11 is performed in a state in which the stock sensor 14 is turned on and the grain culm is detected to be in a conveying state,
The mowing pre-processing unit 4 is driven upward (steps 1 to 3). If the raising operation time is continued for a set time or more, it is determined that the mowing operation is being performed, and the working depth motor M1 is moved to the deepest handling side. To maintain the deep handling state [steps 4 and 5]. If the mowing operation is not in progress, the normal handling depth control is executed [step 6]. Then, as shown in FIG. 4 and FIG. 5, when it is detected that the tip of the pre-cutting processing unit 4 has climbed on the ridge and the detection value of the ultrasonic sensor 26 (the height relative to the ridge) has become equal to or less than the set value h1. The lower end portion of the pre-cutting unit 4 secures the minimum ground height H from the mechanical value which is determined in advance based on the value of the height of the ridge detected by the ultrasonic sensor 26 and the value detected by the elevation angle sensor 27. In this manner, the elevation angle of the pre-cutting processing unit 4 corresponding to the change of the relative movement of the crawler traveling device 1 is calculated [steps 7 and 8].
A transmission 2 interposed in the body traveling system so that the vehicle traveling speed is suitable for the descending speed of the crawler traveling device 1.
9 is decelerated by the electric motor 30, the rolling control is stopped, and each of the rolling cylinders CY2 and CY2 is operated so that the left and right crawler traveling devices 1 and 1 descend to the lowest descending position (an example of a set position). Based on the detection information of the sensor 28 and the detection information of the elevation angle sensor 27, the lift cylinder CY1 is controlled to automatically raise and lower so that the elevation angle calculated in step 8 corresponds to the descending displacement [steps 9 to 11]. Thereafter, the transport state is detected from the detection information of the transport rotation sensor 19, and the detection information of the supply position sensor 13 confirms that the vertical transport device 9 is at the supply position on the deepest handling side.
When it is detected that the very short culm has been conveyed while each of the short culm 1 and the short culm sensor S2 are in the off state, the grain culm is fed from the location where the sensors S1 and S2 are provided from the feed chain 8a based on the detection information of the conveyance rotation sensor 19. It is determined that it has been transported to the start end,
Further, when the required time for transportation from the start end of the feed chain 8a to the entire culm input device 16 elapses from that point, the electric cylinder M2 is operated to switch to the all culm input state [steps 12 to 17]. 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,
After the sheet is conveyed to the start end of the feed chain and the required time for conveyance in the feed chain 8a has elapsed, the lift operation of the electric cylinder M2 is stopped to return to the normal nipping and conveying state (steps 18 to 21).

[Another embodiment] As the short culm detection means,
A special ultra-short culm sensor may be provided instead of the grain culm presence / absence sensor for adjusting the handling depth. Further, the mowing work state detecting means may be configured to detect that the mowing work state has been entered based on a switching operation of a dedicated mode setting switch.

[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 control flowchart.

FIG. 3 is a control flowchart.

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

FIG. 5 is a side view of the front part of the combine.

FIG. 6 is a side view of the whole culm input device.

FIG. 7 is a side view of the whole culm input device.

FIG. 8 is a side view of the crawler traveling device.

[Explanation of symbols]

 REFERENCE SIGNS LIST 1 crawler traveling device 2 threshing device 4 mowing pre-processing unit 8 pinching and conveying device 10 body frame 12 control means 16 whole culm insertion device 26 ground height detection means 27 body height detection means A mowing work state detection means CY2 lifting mechanism S2 Short culm detection means

──────────────────────────────────────────────────続 き Continued on the front page (51) Int.Cl. ⁷ Identification code FI A01D 67/00 A01D 67/00 N 69/00 302 69/00 302E (72) Inventor Futa Ikeda 64 Ishizukitamachi, Sakai City, Osaka Prefecture Kubota Sakai Works Co., Ltd. (72) Inventor Yoshigo Fukuoka 64 Ishizu-Kitacho, Sakai City, Osaka Prefecture 72 Kubota Sakai Works Co., Ltd. In-house (72) Inventor Koji Yamagata 64 Ishizu-Kitacho, Sakai City, Osaka Prefecture Inside Kubota Sakai Factory Co., Ltd. (72) Inventor Tamotsu Seiya 64, Ishizu-Kitamachi Sakai City, Osaka Prefecture Kubota Sakai Factory Co., Ltd. (72) Inventor Shigeki Hayashi 64, Ishizukita-cho, Sakai-shi, Osaka Kubota Sakai Works Co., Ltd. (56) References JP-A-5-91813 (JP, A) JP-A-56-51921 (JP, A ) Actually open 4-124035 (JP, U) Actually open 2-123837 (JP, U) (58) Fields investigated (Int. Cl. ⁷ , DB name) A01F 12/10 A01D 34/24 A01D 41 / 02 A01D 61/00 A01D 67/00 A01D 69/00

Claims (1)

(57) [Claims] 1. A cutting pre-processing unit (4) is connected to a front part of a body frame (10) so as to be able to move up and down around a horizontal axis, and the harvested grain stem is transported to a threshing device (2). While holding and transporting the stock side by the holding and conveying device (8), the tip side is handled and processed inside the threshing device (2), and the left and right traveling devices (1) and (1) are connected to the body frame. (10)
Lifting mechanism (CY2) for raising and lowering relative to each other,
A combine that is provided with a (CY2), during grain稈搬feed path for threshing process, the culms conveyance state for conveying the cutting culms, threshing apparatus all culms of the bush ToKoku稈(2)
A stalk input device (16) that can be switched between a stalk input state and an all stalk input state is provided. Stalk detection means (S2)
A ground height detecting means (26) for detecting a ground height on the front side of the pre-cutting section (4); and a body height detecting the body height of the pre-cutting section (4). A mowing work state detecting means (A) for detecting a mowing work state in which a mowing operation is performed while gradually increasing the mowing height of the grain culm; and the mowing work state detecting means. When (A) performs the detection operation and the ground height detecting means (26) detects that the ground height has been set, the traveling devices (1) and (1) are relatively lowered to the set position. Each lifting mechanism (CY
2), (CY2) is driven, and the cutting pre-processing unit (4) is driven up and down so that the detection value of the anti-aircraft height detection means (27) becomes a set value. A combine comprising a control means (12) for switching the whole culm input device (16) from the grain culm transport state to the whole culm input state when the detection means (S2) performs a detection operation.