JP2005102509A - Threshing depth controlling means in combine harvester - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a threshing depth controlling means in a combine harvester surely changing over a threshing depth means to a deep threshing state when a pretreating part is lifted. <P>SOLUTION: A threshing depth regulating means 7 for regulating the threshing depth with a threshing part 3 for threshing straws transported from the side of a front processing part 6 and carrying out transportation of the straws is installed in a transporting part 23 of the pretreating part 6 freely vertically lifting and lowering and having the transporting part 23 for transporting the straws reaped with a cutting part 21. An automatic deep threshing means for actuating and controlling the threshing depth regulating means 7 to the deep threshing side when the pretreating part 6 is lifted over a prescribed height or lifted to the prescribed height or above is provided in the threshing depth controlling means for controlling the threshing depth regulating means 7. <P>COPYRIGHT: (C)2005,JPO&NCIPI

Description

  The present invention relates to a handling depth control means in a combine.

Conventionally, a pre-processing unit that has a cutting unit that reaps cereals in the field and a conveying unit that conveys the cereals harvested by the cutting unit, and threshing that threshs the cereals that are conveyed from the pre-processing unit side. And a handling depth adjusting means for controlling the handling depth adjusting means and a handling depth controlling means for controlling the handling depth adjusting means. Is known to have automatic deep handling means for controlling the working depth adjusting means to the deep handling side when the pre-processing unit is operated to the ascending side for a predetermined set time or a predetermined set amount continuously. (For example, refer to Patent Document 1).
Japanese Patent No. 2525503

  However, the automatic deep handling means does not operate unless the preprocessing unit is operated to the ascending side for a predetermined set time or a predetermined set amount continuously. For example, when the preprocessing unit is raised intermittently, There was a drawback of not working.

  The handling depth control means in the combine according to the present invention for solving the above-mentioned problem is a vertical ascending / descending movement having a cutting part 21 for harvesting cereal grains in a field and a conveying part 23 for conveying cereals harvested by the cutting part 21. A free pretreatment unit 6 and a threshing unit 3 for threshing cereals conveyed from the preprocessing unit 6 side are provided, and the conveying depth of the cereals is adjusted by adjusting the handling depth by the threshing unit 3. In the combine provided with the handling depth adjusting means 7 for carrying and the handling depth control means for controlling the handling depth adjusting means 7, the pre-processing unit 6 exceeds the predetermined height in the handling depth control means or A first feature is that automatic deep handling means for operating the handling depth adjusting means 7 to the deep handling side when the height exceeds the predetermined height is provided.

  Second, a pre-processing stop means is provided for stopping the driving of the pre-processing unit 6 when the height of the pre-processing unit 6 reaches a predetermined driving stop height. The height of the pre-processing unit 6 where the means is operated is determined in conjunction with the adjustment of the drive stop height.

  At the end of harvesting cereals at the end of the ripening, the harvesting cereals at the end of cutting at the end of the ripening are terminated in order to end the reaping while raising the pretreatment part to avoid contact between the pretreatment part and the heel. Need to be deeply handled. The handling depth control means of the present invention automatically controls the depth handling adjusting means by the automatic depth handling means when the pre-processing unit reaches a height that exceeds the predetermined height or exceeds the predetermined height. Since the operation is controlled to the right side, there is an effect that the deep handling process can be automatically performed at the edge.

  In particular, the automatic control to the deep handling side is not only when the pretreatment unit is operated to the ascending side for a predetermined set time or a predetermined set amount continuously, but also when the pretreatment unit is raised intermittently. Since the pre-processing unit is automatically performed when the height reaches or exceeds the predetermined height, there is an advantage that an erroneous operation of automatic control is prevented.

  On the other hand, when the preprocessing lifting control means for controlling the raising and lowering of the preprocessing section is provided with a preprocessing stopping means for stopping the driving of the preprocessing section when the height of the preprocessing section reaches a predetermined driving stop height, The stop height is adjusted according to the height of the preprocessing unit during the cutting operation. For example, in a soft field, since the body sinks, the height of the pre-processing unit is relatively high, and the mowing operation is performed, so the drive stop height is set to a higher position.

  For this reason, for example, the height of the pre-processing section where the automatic handling depth means operates can be determined by determining the height of the pre-processing section where the automatic handling depth means operates in conjunction with the drive stop height. However, when the height of the pre-processing part at the time of mowing is used as a reference, it is possible to prevent inconveniences such as being too low, and to ensure that the automatic handling depth means is operated according to the mowing conditions. There is an effect that can be.

  FIG. 1 is a side view of a combine adopting the handling depth control means of the present invention. A threshing section 3 is provided on a traveling machine body 2 provided with left and right crawler traveling devices 1, and a driver seat 4 shown in FIG. 2 is provided on the front side of the traveling machine body 2. As shown in FIG. 1, a pre-processing unit 6 is provided in front of the driver's seat 4, and a handling depth transport body 7 is provided in the pre-processing unit 6.

  And this combine harvests cereal husk by the pre-processing part 6, and adjusts the handling depth by the handling depth conveyance body 7 by the pre-processing part 6 like before, and conveys it to the threshing part 3 side. The feed chain 8 is inherited, and the cereal is fed to the threshing unit 3 by the feed chain 8 and threshed.

  In this combine, as shown in the transmission diagram of FIG. 3, the crawler traveling device 1 is driven by a traveling hydraulic continuously variable transmission (traveling HST) 11 driven by the driving force from the engine 9, The feed chain 8 and the pre-processing unit 6 are configured to be driven to shift by a working machine hydraulic continuously variable transmission (working machine HST) 12 driven by a driving force from an engine.

  In the driver's seat 4, a main transmission lever 13 for shifting the traveling HST 11 is provided. The operator shifts the traveling HST 11 by the main transmission lever 13 to operate the traveling speed of the traveling machine body 2 to shift the combine. Can be run.

  On the other hand, the pre-processing unit 8 includes a pre-processing frame 17 having a horizontal frame 14 in the left-right direction and a divider frame 16 projecting forward from the horizontal frame 14, and is supported by the divider frame 16 to be raised. Is attached. A weeding body 19 is attached to the tip end side of the divider frame 16.

  Further, below the divider frame 16, a cutter (cutting unit) 21 for cutting the culm is provided behind the pulling device 18, and above the divider frame 16, the harvested culm And the above-mentioned handling depth conveying body 7 that inherits the cereal straw from the raking conveying body 22 and conveys it to the feed chain 8. And the handling depth transport body 7 constitute a transport unit 23 that transports the harvested cereal to the threshing unit 3 side (feed chain 8).

  Then, the pulling device 18, the cutter 21, the scooping transport body 22, and the handling depth transport body 7 are driven by the driving force from the work machine HST) 12, and the pulling device 18 pulls the culm and the cutter 21 causes The cereal stock of the cereals that have been cut is cut to harvest the cereals, and the cereals that have been harvested by the drive-in transporter 22 are raked in and fed back, and the cereals sent by the drive-in transporter 22 are transported in depth. The body 7 sends it to the inherited feed chain 8.

  At this time, the handling depth transport body 7 is pivotally supported at the rear fulcrum so as to be swingable up and down. As the handling depth adjusting means, the handling depth can be changed by changing the gripping position of the cereal by adjusting the vertical swinging angle. Adjust the depth and pass the cereals to the feed chain 8.

  In the present embodiment, on the pre-processing frame 17 side, a set of two handling depth sensors 24 for detecting the stock position of the cereal and the handling depth for adjusting the swing angle of the handling depth carrier 7. And a handling depth control means configured by a handling depth control function of a microcomputer unit to which the handling depth motor 24 and the handling depth motor 26 are connected. It is possible to perform automatic control of the treatment depth (automatic treatment depth control) according to the heel length.

  For this reason, the front operation panel 27 in front of the seat 5 in the driver's seat 4 is provided with a handle depth automatic switch 28 for setting on / off of automatic handle depth control. By turning ON, automatic handling depth control can be performed during the cutting operation.

  On the other hand, a vertical frame 29 is projected from the pretreatment frame 17 toward the traveling machine body 2, and the vertical frame 29 is pivotally supported at the rear end thereof on the frame 31 side of the traveling machine body 2. . A lift cylinder 32 made of a hydraulic cylinder is interposed between the intermediate portion of the vertical frame 29 and the frame 31, and the pre-processing unit 6 uses a rotation fulcrum of the vertical frame 29 by expansion and contraction of the lift cylinder 32. It is moved up and down with respect to the traveling machine body 2 at the center.

  A steering lever 33 is provided in the driver's seat 4 so as to be swingable left and right and back and forth. The operator adjusts the expansion and contraction of the lift cylinder 32 by the forward and backward tilting operation of the steering lever 33, and the preprocessing section. 6 can be raised and lowered manually. The steering lever can also change the traveling direction of the machine body in the left-right direction by providing a difference in the number of rotations of the left and right traveling devices by a left-right tilting operation.

  Further, in the present embodiment, a lift potentiometer 35 for detecting the swing angle of the vertical frame 29, that is, the elevation height of the pre-processing unit 6, is provided at the rotation fulcrum portion of the vertical frame 29, and the steering lever 33 The base is provided with a preprocessing ascent switch for detecting the ascending operation of the preprocessing unit 6.

  Then, the pre-processing stop function of the microcomputer unit to which the lift potentiometer 35, the pre-processing raising switch, and the expansion / contraction solenoid of the lift cylinder 32 are connected allows the pre-processing unit 6 to have a height equal to or higher than a predetermined driving stop height. Pre-processing stop means for stopping the driving of the unit 6 is configured and provided, and the pre-processing unit 6 is controlled to stop pre-processing by the pre-processing stop means, and the driving is automatically stopped when the driving stop height is exceeded. The

  However, the height of the pretreatment unit 6 at the time of cutting and threshing varies depending on the state of the field. For example, in a soft field, the traveling machine body 2 sinks, so that the height of the pretreatment unit 6 is relatively high. Is done. Therefore, an adjustment dial 40 that adjusts and sets the drive stop height is provided in front of the main transmission lever 13 in front of the side operation panel 43 on the side of the seat 5, and the drive stop height is The setting is changed by the adjustment dial 40, and the drive stop height is set at a higher position when the preprocessing unit 6 is operated with a relatively high height as described above.

  On the other hand, the work machine HST12 is attached to a work machine transmission 37 in which the driving force from the engine 9 is input to the input shaft 36 via the work machine clutch 34. The work machine HST12 is attached to the work machine transmission 37. Operates with the input driving force. The feed chain 8 is driven by the feed chain drive shaft 39 protruding from the work machine transmission 37, and the pretreatment unit 6 is driven by the pretreatment drive shaft 41 protruding from the work machine transmission 37.

  However, a pre-processing clutch 42 is provided between the pre-processing drive shaft 41 and the pre-processing unit 6, and the pre-processing unit 6 is driven through the pre-processing clutch 42 so as to be turned on and off. In addition, each part other than the feed chain 8 of the threshing part 3 is driven by taking out a driving force from the input shaft 36 of the work machine transmission 37.

  When the work implement clutch 34 is engaged and operated as described above, each part of the threshing section 3 including the feed chain 8 is driven, and when the work implement clutch 37 is engaged, the pretreatment clutch 42 is engaged. Driven. However, the drive speed of the preprocessing unit 6 and the feed chain 8 is changed by the work machine HST12.

  The shift of the work implement HST12 is performed by a shift motor 38 that rotationally drives the shift operation shaft of the work implement HST12. In this embodiment, the automatic shift function of the microcomputer unit to which the shift motor 38 and the shift motor 38 are connected. The vehicle speed control is performed by the work machine automatic transmission means configured as follows, and the drive speed of the preprocessing unit 6 and the feed chain 8 is automatically changed according to the travel speed (vehicle speed) of the travel machine body 2. Yes.

  The side operation panel 43 is provided with a work machine lever 44 for operating on / off of the work machine clutch 34 and the pretreatment clutch 42 so that the work machine lever 44 can swing back and forth and to the left and right. By locating at the position N, the work implement clutch 34 and the pretreatment clutch 42 are both turned off and operated, and both the threshing unit 3 and the pretreatment unit 6 can be stopped.

  Further, by setting the work implement lever 44 to the threshing-in position P1 that is swung forward one step from the neutral position N, only the work implement clutch 34 is engaged and operated, and the threshing section 3 ( The feed chain 8 (including the feed chain 8) can be driven. Then, by setting the work machine lever 44 to the forefront position P2 in which the work machine lever 44 is swung forward, the work machine clutch 34 and the pretreatment clutch 42 are entered and operated, and both the threshing unit 3 and the pretreatment unit 6 are operated. It can be driven to perform the mowing and threshing work as described above.

  At this time, since the position of the work machine lever 44 is as described above, the pretreatment unit 6 always operates after the threshing unit 3 is operated, and the pretreatment unit 6 does not operate when the threshing unit 3 is stopped. . The work machine lever 44 swings left and right and back and forth along a lever guide 46 provided on the side operation panel 43 to switch the position. The lever guide 46 is provided with a cutting switch 47 for detecting that the work machine lever 44 is located at the threshing cutting position P2, and when the preprocessing clutch 42 is engaged, the cutting switch 47 is turned on ( Enter) state.

  Next, the above-described handling depth control function, automatic transmission function, and preprocessing stop function will be described. The handling depth control function, the automatic transmission function, and the preprocessing stop function are implemented in the same microcomputer unit. As shown in FIG. 4, the above-mentioned handling depth motor 26, A solenoid 49 of the lift cylinder 32 and a transmission motor 38 are connected.

  Further, on the input side of the microcomputer unit 48, a cutting main sensor 51 that detects the presence or absence of culm of the handling depth carrier 7, the above-described two handling depth sensors 24, a pre-processing raising switch 52, a cutting switch 47, A handling depth switch 28, a lift potentiometer 35, and an adjustment dial 40 are connected. On the memory side of the microcomputer unit 48, a handling depth control program that allows the microcomputer unit 48 to realize a handling depth control function, an automatic transmission program that realizes an automatic shifting function, and a preprocessing stop that realizes a preprocessing stop function The program is stored.

  Next, the operation of the vehicle speed control by the work implement automatic transmission means realized by the work implement shift function of the microcomputer unit 48 and the preprocess stop control by the preprocess stop means realized by the preprocess stop function will be described. However, the pre-processing stop control is included in the vehicle speed control. Therefore, as shown in the flowchart of the vehicle speed control in FIG. 5, the microcomputer unit 48 reads and reads the value of the adjustment dial 40 described above in step S1. The actual drive stop height is calculated from the value of the adjustment dial 40, and the process proceeds to step S2.

  In step S2, the microcomputer unit 48 reads the value of the lift potentiometer 35, calculates the height of the preprocessing unit 6, and compares the calculated height (preprocessing height) with the drive stop height. If the preprocessing height is less than the driving stop height (preprocessing height <driving stop height), the process proceeds to step S3, and the driving speeds of the preprocessing unit 6 and the feed chain 8 are made to correspond to the vehicle speed of the traveling machine body 2. Thus, the vehicle speed automatic control for controlling the transmission motor 38 is executed and the process returns. Since the automatic vehicle speed control is conventionally known, a detailed description of the flow is omitted.

  On the other hand, in step S2, if the preprocessing height is equal to or higher than the driving stop height (preprocessing height ≧ driving stop height), the process proceeds to step S4 so that the driving speeds of the preprocessing unit 6 and the feed chain 8 become zero. Then, the transmission motor 38 is actuated to the deceleration side and the process returns. That is, steps S1, S2, and S4 constitute preprocessing stop control, and when the preprocessing unit 6 reaches or exceeds a predetermined drive stop height, the drive with the feed chain 8 is stopped.

  Thereby, when raising the pre-processing part 6 by turning etc., the drive of the pre-processing part 6 and the feed chain 8 is stopped automatically, and turning etc. can be performed smoothly.

  Next, the operation of the handling depth automatic control by the handling depth control means realized by the handling depth control function will be described. The handling depth control means (automatic handling depth control) includes automatic depth handling means for automatically handling depth when the pre-processing unit 6 reaches a predetermined depth handling start height or more. Therefore, as shown in the flowchart of the automatic handling depth control in FIG. 6, the microcomputer unit 48 reads the drive stop height calculated in the above-described vehicle speed control in step S1, and the drive stop height is read. Then, a depth handling start height that is less than the drive stop height is calculated, and the process proceeds to step S2, where ON / OFF of the handling depth switch 28 is checked.

  In step S2, if the handling depth switch 28 is ON, the process proceeds to step S3 to check ON / OFF of the cutting switch 47. If the cutting switch 47 is ON, the process proceeds to step S4. Then, in step S4, the state of the cutting main sensor 51 is checked, and when the cutting operation is performed (when the culm exists in the handling depth carrier 7 and is in circulation), the process proceeds to step S5, and the lift potentiometer 35 is reached. The height of the pre-processing unit 6 is calculated, and the calculated height (pre-processing height) is compared with the depth handling start height.

  If the pretreatment height is less than the deep handling start height (pretreatment height <deep handling start height), the process proceeds to step S6 and the handling depth motor 26 is turned on based on the two handling depth sensors 24. Control to automatically control the depth and return. In addition, since automatic control of the treatment depth based on the two treatment depth sensors 24 is conventionally well-known, detailed description is omitted.

  On the other hand, if the pretreatment height is equal to or higher than the deep handling start height (pretreatment height ≧ deep handling start height), the process proceeds to step S7, where the handling depth transport body 7 is a predetermined depth handling. The working depth motor 26 is operated to the deep handling side so as to be in a state, and the process returns. In step S2, if the handling depth switch 28 is OFF, if the cutting switch 47 is OFF in step S3, or if the cutting main sensor 51 is not cutting in step S4 (the handling depth carrier) If there is no cereal meal in 7 and no cereal meal is in circulation), the process returns.

  As a result, the work implement lever 44 is positioned at the threshing / cutting-in position P2 (the cutting switch 47 is ON), and if the culm exists in the handling depth transport body 7, the handling depth switch 28 is turned on. When the pretreatment height is less than the depth handling start height, the handling depth is automatically controlled.

  However, when the pretreatment height is equal to or higher than the deep handling start height, the handling depth transport body 7 is automatically controlled to a predetermined deep handling state, that is, steps S1, S5, and S7 are automatically handled. When the pre-processing unit 6 is raised to a predetermined height (depth handling start height) or more by the automatic depth handling means, the handling depth carrier 7 is automatically operated to the depth handling side. And maintained in the deep handling state.

  Thereby, for example, the deep handling process at the heel can be automatically performed. That is, at the end of the cutting of the grain cocoon at the end of the ripening, the cutting is finished while raising the preprocessing unit 6 in order to avoid contact between the preprocessing unit 6 and the cocoon. For this reason, the harvested cereals at the end of cutting at the end of the chopsticks are short chopsticks, and at the end of cutting the cereals at the end of the cutting, it is necessary to carry out the threshing process using the handling depth as a deep handle. Depth handling by the handling means The deep handling state of the transport body 7 is set to the deep handling state at the end of cutting of the grain pods, so that the deep handling threshing processing at the end of the ripening is performed by the automatic deep handling means. Can be done automatically.

  And in the case of this automatic deep handling means, not only when the pre-processing unit 6 is operated upward for a predetermined set time or a predetermined set amount, but also when the pre-processing unit 6 is raised intermittently When the pre-processing unit 6 becomes higher than the deep handling start height, the handling depth transport body 7 is automatically switched to the deep handling state. Mistakes are prevented.

  However, as described above, for example, in a soft field, since the traveling machine body 2 sinks, the work is performed with a relatively high height of the preprocessing unit 6, and the drive stop height is set to a higher position by the adjustment dial 40. Is set. For this reason, if the deep handling start height is constant, the deep handling start height becomes too low with respect to the height of the pre-processing unit 6 at the time of cutting work, Even though the height of the pre-processing unit 6 is equal to or higher than the deep handling start height, and the work is not a work at the edge, the handling depth transport body 7 is switched to the deep handling state at the end of the grain reaping. Problem occurs.

  However, in the present embodiment, the deep handling start height of the automatic deep handling means is changed in conjunction with the drive stop height in step S1 and is determined to be a height less than the drive stop height. Since the height is changed in conjunction with the pretreatment height at the time of cutting work, the deep handling start height is also changed in conjunction with the pretreatment height at the time of cutting work, and the deep handling start height is The height is not too low with respect to the height of the pre-processing unit 6 at the time of the cutting operation. When working on a soft field, the deep handling automatic control does not malfunction, and the handling depth transport body 7 is not switched to the deep handling state at the end of the cereal harvesting.

  Moreover, the inconvenience that the deep handling start height is higher than the drive stop height and automatic deep handling means is not performed is prevented, and the automatic handling depth is adjusted according to various cutting conditions (height of the pre-processing unit). The means can be operated reliably and the automatic deep handling at the above-mentioned edge can be executed.

  In the above-described embodiment, when the pre-processing unit 6 is raised above the deep handling start height by the automatic deep handling means, the handling depth transport body 7 is automatically operated to the deep handling side. When the processing unit 6 rises to a height exceeding the deep handling start height, the handling depth transport body 7 may be automatically operated to the deep handling side. When the processing unit 6 exceeds the predetermined drive stop height, the drive is stopped together with the feed chain 8. However, when the pre-processing unit 6 exceeds the drive stop height, the pre-processing unit 6 is driven together with the feed chain 8. You may comprise so that it may stop.

It is a side view of a combine. It is a top view of a driver's seat part. It is a power transmission diagram of a combine. It is a block diagram of a microcomputer unit part. It is a flowchart figure of vehicle speed control. It is a flowchart figure of handling depth automatic control.

Explanation of symbols

3 Threshing unit 6 Pre-processing unit 7 Handling depth carrier (handling depth adjusting means)
21 Cutter (cutting part)
23 Transport section

Claims (2)

  A preprocessing unit (6) having a cutting unit (21) for harvesting cereal grains in a field and a transporting unit (23) for conveying cereals harvested by the cutting unit (21); (6) A threshing unit (3) for threshing the cereals conveyed from the side is provided, and the cereals are conveyed by adjusting the handling depth by the threshing unit (3) in the conveying unit (23). In the combine provided with the handling depth adjusting means (7) and the handling depth control means for controlling the handling depth adjusting means (7), the pre-processing unit (6) has a predetermined height in the handling depth control means. A handling depth control means in a combine provided with an automatic deep handling means for operating the handling depth adjusting means (7) to the deep handling side when exceeding a predetermined height or exceeding the predetermined height. When the height of the pre-processing unit (6) reaches a predetermined drive stop height, pre-processing stop means for stopping the drive of the pre-processing unit (6) is provided, the drive stop height can be adjusted, and automatic handling is performed. The handling depth control means in the combine according to claim 1, wherein the height of the pre-processing section (6) at which the depth means operates is determined in conjunction with the adjustment of the drive stop height.

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