JP2009159892A - Combine harvester - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To improve operability of a switching means for switching a front processing part drive and stop control between a practice possible state to a practice impossible state in a combine harvester equipped with the front processing part drive and stop control for automatically stopping the drive of a front processing part when the front processing part is raised to a fixed height during a reaping operation. <P>SOLUTION: The combine harvester has a constitution that the switching means 62 for switching the front processing part drive and stop control from a practice possible state to a practice impossible state is arranged in the vicinity of the front of a main speed change lever 19 attached to a control part 4 of the combine harvester, a switch with a dial is adopted as the switching means 62 and the fall limit height of the front processing part 6 is set through the dial 63. <P>COPYRIGHT: (C)2009,JPO&INPIT

Description

  The present invention relates to a combine equipped with a pre-processing unit drive stop control for automatically stopping driving of the pre-processing unit when the pre-processing unit is raised to a predetermined height during the cutting operation.

  In a conventional combine, in order to avoid an engine drop due to an increase in running resistance when the cutting operation is interrupted at the field edge and the headland is turned, the pre-processing unit is raised to a predetermined height during the cutting operation. A preprocessing unit drive stop control (mechanism) is provided to automatically stop driving (transmission) of the preprocessing unit when it is in the cutting operation state.

In recent years, combines are equipped with many automatic controls such as automatic cutting height control, automatic selection control, pre-processing section drive stop control, automatic saw depth control, automatic direction control, etc. It is possible to switch to an executable state or an inexecutable state via a changeover switch intensively arranged on the side panel on the side of the driver's seat provided in the control unit (see, for example, Patent Document 1).
Japanese Patent Laying-Open No. 2005-80572 (page 3-4, FIGS. 2 and 3)

  By the way, when the harvesting of the field or the headland is performed with the combine, the pretreatment unit driving described above is performed so that a plurality of herbaceous bodies provided at the front end of the pretreatment unit do not hit an obstacle such as a straw. In some cases, it is necessary to perform so-called high cutting with the stop control disabled. At this time, the operator is forced to work while gazing at the herbaceous body in order to grasp the distance and height between the herbicidal body and an obstacle such as a basket. Therefore, in this state, in order to operate the changeover switch that switches the preprocessing unit drive stop control arranged on the side panel to the executable state or the inoperable state, the operator moves from the front herbaceous body to the side panel on the side. There was a problem in operability because the line of sight had to be greatly diverted.

The present invention aims to solve the above-described problem, and a pre-processing unit for cutting and transporting cereals is erected on the front part of the traveling machine body supported by the crawler traveling device so as to be movable up and down. In a combine equipped with a pre-processing unit drive stop control for automatically stopping the driving of the pre-processing unit when the pre-processing unit is raised to a predetermined height during the mowing operation, a main shift lever provided in the control unit of the combine The first feature is that switching operation means for switching the preprocessing unit drive stop control to an executable state or an inexecutable state is disposed in the vicinity of the front of the vehicle.
A second feature is that a switch with a dial is adopted as the switching operation means, and the lower limit height of the preprocessing unit can be set via the dial.
In addition, when a pretreatment unit that harvests and conveys cereals is laid up and down at the front of the traveling machine supported by the crawler traveling device, and when the pretreatment unit is raised to a predetermined height during the mowing operation, In a combine provided with a pre-processing unit drive stop control for automatically stopping the drive of the pre-processing unit, the pre-processing unit drive stop control can be executed or disabled in the main transmission lever provided in the control unit of the combine The third feature is that a switching operation means for switching to is provided.

When performing harvesting on the edge of a field or a headland with a combine, the operator needs to know the distance and height between the multiple weeds at the front end of the pretreatment unit and the obstacles such as cocoons. According to the first aspect of the present invention, preprocessing is performed in the vicinity of the front of the main speed change lever provided in the control portion, that is, in the forward operation area side of the main speed change lever having a relatively high operation frequency. Since the switching operation means for switching the part drive stop control to the executable state or the inexecutable state is provided, the operator can operate the switching operation means without greatly diverting the line of sight from the front weed body. improves.
According to a second aspect of the present invention, a switch with a dial is adopted as the switching operation means, and the lower limit height of the preprocessing unit can be set via the dial, thereby driving the preprocessing unit. Since there is no need to separately provide a switching operation means for switching the stop control to an executable state or an inexecutable state and a dial for setting the lower limit height of the preprocessing unit, the degree of freedom in the layout of the switches is improved. At the same time, the cost can be reduced. Further, the operability is improved by combining the switching operation means and the setting dial related to the lifting operation of the preprocessing unit.
According to a third aspect of the present invention, when a combine harvesting or a headland cutting operation is performed with a combine, the main shift lever that frequently performs forward and backward movement and shift operation of the combine is controlled by a preprocessing unit drive stop control. By providing the switching operation means for switching to the executable state or the unexecutable state, the operator can easily operate the switching operation means without releasing his / her hand from the main transmission lever, so that the operability is improved.

  Next, embodiments of the present invention will be described with reference to the drawings. 1 and 2 are a side view and a plan view of a combine. The combine has a traveling machine body 2 supported by a pair of left and right crawler traveling devices 1L and 1R as a traveling unit. An engine 3 is mounted on the right side of the front part of the vehicle, and a driver's seat 5 constituting a combine control unit 4 is disposed above the engine 3.

  On the other hand, on the left side of the front part of the traveling machine body 2, a pre-processing unit 6 that cuts and conveys the cereal is laid up and down freely, and behind the pre-processing unit 6, the harvested culm is threshed. A threshing unit 7 for selecting the threshed grain and a post-processing unit 8 for discharging the waste after being threshed by the threshing unit 7 are provided.

  Further, behind the driver's seat 5, there is provided a grain tank 9 for temporarily storing the grains selected by the threshing unit 7, and the grains temporarily stored in the grain tank 9 are Then, it can be discharged out of the machine through a discharge port 12a of a grain discharge auger 12 that can freely move up and down through a vertical conveying pipe 11.

  And on the front side of the boarding step 13 that forms the floor surface in front of the driver's seat 5, a control tower 15 having a multi-steering lever 14 that steers the traveling machine body 2 and raises and lowers the preprocessing unit 6 is erected. ing. The multi-steering lever 14 protrudes from the right side of the top panel 16 that covers the upper portion of the control tower 15, and a meter panel 17 for displaying various information necessary for the cutting operation (operation) is provided on the left side of the top panel 16. Decorated.

  In addition, the side panel 18 on the left side of the driver's seat 5 has a plurality of operation levers necessary for the operation of the combine such as the main transmission lever 19, the auxiliary transmission lever 21, and the harvesting / threshing clutch lever 22, and a state in which automatic selection control can be performed. Alternatively, a switch 23 with a dial for switching to an inexecutable state, a switch 24 with a dial for switching to an executable or inexecutable state of horizontal automatic control, a changeover switch 25 for switching an automatic depth control to an executable or inexecutable state, Switches such as a changeover switch 26 for switching the automatic direction control to an executable state or an inexecutable state are provided, and the combine control unit 4 is formed by the configuration described above.

  FIG. 3 is a transmission diagram of the combine. The output shaft 3a of the engine 3 has a work machine output pulley 32 that outputs the power of the engine 3 to the preprocessing transmission case 31 and the threshing unit 7. A travel output pulley 34 that outputs travel power to a travel hydrostatic continuously variable transmission (hereinafter referred to as travel HST) 33 is attached.

  Further, a V-belt 37 is wound between the input pulley 36 provided on the input shaft 35 of the preprocessing transmission case 31 and the work machine output pulley 32, and a belt tension type threshing is provided between the pulleys 32 and 36. (Working machine) A clutch 38 is provided. On the other hand, a V-belt 43 is wound between an input pulley 42 and a travel output pulley 34 provided on the input shaft 41 of the travel HST 33, and the power of the engine 3 can be freely turned on and off via a threshing clutch 38. While being transmitted to the preprocessing transmission case 31, it is also transmitted to the traveling HST 33.

  A V-belt 46 is wound between a pulley 39 provided at the shaft end of the input shaft 35 of the preprocessing transmission case 31 and a pulley 45 provided on the tang shaft 44a of the tang fan 44 provided in the threshing section 7. The tang fan 44 is driven to rotate through the V belt 46, and the handling cylinder 47 of the threshing unit 7 and the culling after being threshed by the threshing unit 7 by the power transmitted to the tang shaft 44a. A waste transporting device 48 and the like to be sent later to the post-processing unit 8 are driven.

  The power input to the preprocessing transmission case 31 is input to a preprocessing hydrostatic continuously variable transmission (hereinafter referred to as preprocessing HST) 51 provided integrally with the preprocessing transmission case 31. Is done. The power input to the preprocessing HST 51 is arbitrarily shifted by the preprocessing HST 51 and is also shifted in the preprocessing transmission case 31 to be output to the threshing feed chain drive shaft 52 and the preprocessing drive shaft 53. Is done.

  The power output to the threshing feed chain drive shaft 52 is transmitted to a drive sprocket 54 provided at the shaft end of the threshing feed chain drive shaft 52, whereby the threshing feed chain 55 is rotationally driven. Then, the cereals inherited from the preprocessing unit 6 side can be supplied to the threshing unit 7.

  Further, a preprocessing output pulley 56 is provided at the shaft end of the preprocessing drive shaft 53, and a V that is wound between the preprocessing output pulley 56 and an input pulley 57 that inputs power to the preprocessing unit 6. Power is transmitted to the pretreatment section 6 through a belt tension type pretreatment clutch 59 provided between the belt 58 and the pulleys 56 and 57.

  With the transmission configuration described above, the combine drives the pair of left and right crawler travel devices 1L and 1R, the pretreatment unit 6, the threshing unit 7 and the like by the power output from the engine 3. That is, by operating the operator on board the control unit 4, the pair of left and right crawler travel devices 1L and 1R are driven to travel within the field while performing harvesting and threshing of the culm planted in the field. Can be done.

  Further, the combine includes a control unit 61 configured using a microcomputer (including a CPU, ROM, RAM, etc.) as shown in a block diagram related to the preprocessing unit drive stop control of the present invention shown in FIG. On the input side of the control unit 61, preprocessing for automatically stopping the driving of the preprocessing unit 6 and the threshing feed chain 55 when the preprocessing unit 6 is raised to a predetermined height during the cutting operation. The lift shut switch 62 provided near the front of the main transmission lever 19 can be switched between enabling or disabling the partial drive stop control, and a dial switch integrated with the lift shut switch 62 When the cutting height dial 63 for setting the descending limit height of the preprocessing unit 6 and the preprocessing unit drive stop control are in the execution state (including the executable state), the preprocessing unit The lift shut release switch 62 ′ (see FIGS. 5 and 6) provided on the grip portion G of the main transmission lever 19 and the cutting height dial 63 so as to be able to switch the motion stop control to the inoperable state. Detecting the engaged state of the threshing (working machine) clutch 38 by the cutting height release switch 64 provided at the gripping portion of the multi-steering lever 14 capable of releasing the lower limit height of the processing unit 6 and the cutting / threshing clutch lever 22 A threshing (working machine) clutch switch 65, an overturning cut switch 66 (see FIG. 5) provided in the grip portion G of the main transmission lever 19 that is used when it is desired to increase the speed of the pre-processing portion in the overturning operation, etc. Forced scraping screw provided on the grip part G of the main transmission lever 19 used to drive the pre-processing part 6 and the threshing feed chain 55 in a traveling stop state or in reverse. When the switch 67 (see FIG. 5) and automatic handling depth control are switched to the non-executed state by the changeover switch 25, the handling depth by the handling depth conveying device (not shown) is set to the deep handling or shallow handling side. A deep handling depth manual switch 68 and a shallow handling depth manual switch 69 (see FIG. 6) provided on the grip portion G of the main transmission lever 19, and a multi-steering mechanism. Predetermined inputs are a lift rotary switch 71 for detecting the raising or lowering operation of the preprocessing unit 6 by the lever 14 and a lift potentiometer 72 for detecting the operation state of a lift (hydraulic) cylinder (not shown) that raises or lowers the preprocessing unit 6. Connected via interface circuit.

  On the other hand, an output side of the control means 61 is provided in the vicinity of the lift shut switch 62. When the pre-processing unit drive stop control is switched from the non-executable state to the executable state by the lift shut switch 62, the light is turned on. When the partial drive stop control is switched from the executable state to the non-executable state, the pre-processing unit drive stop lamp 85 that goes off and the lift incorporated in the direction switching valve that controls the lift cylinder (not shown) that raises or lowers the pre-processing unit 6 A motor relay 89 linked to a swash plate control motor 88 of an HST pump (not shown) provided in the pretreatment HST 51 is connected via a predetermined output interface circuit. Yes.

  More specifically, when performing the cutting of the field or the headland with the above-described combine, the operator can determine the distance and height between the plurality of weeds 91 provided at the front end of the pre-processing unit 6 and obstacles such as a basket. In order to grasp this, the work while gazing at the herb body 91 is forced, but in the vicinity of the front of the main transmission lever 19 provided in the control section 4, that is, the forward operation area side of the main transmission lever 19 with relatively high operation frequency. In addition, by providing a lift shut switch 62 as a switching operation means for switching the pre-processing unit drive stop control to an executable state or an inoperable state, the operator can lift the lift shut without greatly diverting the line of sight from the front weed body 91. The switch 62 can be operated and the operability is improved.

  Then, a switch with a dial is adopted as the switching operation means (lift shut switch) 62, and the lower limit height of the preprocessing unit 6 can be set via the dial 63, so that the preprocessing unit drive is stopped. Since it is not necessary to separately provide the switching operation means 62 for switching the control to the executable state or the inexecutable state and the dial 63 for setting the lower limit height of the preprocessing unit 6, the degree of freedom of the layout of the switches is increased. The cost can be reduced while improving. Further, the operability is improved by combining the switching operation means 62 and the setting dial 63 related to the raising / lowering operation of the preprocessing unit 6 into one.

  Further, in this embodiment, when the pre-processing unit drive stop control is in the execution state (including the executable state) by the switching operation means 62, the pre-processing unit drive stop control can be switched to the non-executable state. A lift shut release switch 62 ′ as a switching operation means is provided in the grip portion G of the main transmission lever 19. In other words, when performing harvesting of a field or headland with a combine, a lift shut release switch 62 ′ is provided on a main transmission lever that is frequently moved forward and backward by the operator, and the operator operates the main transmission lever. The lift shut release switch 62 ′ can be easily operated without releasing the hand 19, so that it is possible to quickly shift to high cutting at the time of dredging.

  As described above, a lift shut 62 is provided in the vicinity of the front of the main transmission lever 19 provided in the control unit 4 to switch the preprocessing unit drive stop control to an executable state or an inexecutable state, and the grip G of the main transmission lever 19 is provided. Providing the lift shut release switch 62 'is not a preferable configuration in consideration of cost. Therefore, it may be configured as a switching switch that can switch the pre-processing unit drive stop control to the executable state or the inexecutable state by the lift shut release switch 62 ′ provided in the grip portion G of the main transmission lever 19 alone. Also in this case, the operator can operate the lift shut release switch (switching operation means) 62 ′ without releasing his / her hand from the main speed change lever that frequently performs forward / reverse movement and speed change operation, thereby improving operability.

The side view of a combine. The top view of a combine. Combined transmission diagram. The block diagram which shows the structure of a control part. The rear perspective view of a main gearshift lever. The front perspective view of a main gearshift lever. The enlarged view of a lift shut switch.

Explanation of symbols

1L crawler travel device (left)
1R crawler travel device (right)
2 traveling machine body 4 control section 6 preprocessing section 19 main speed change lever 62 switching operation means (lift shut switch)
62 'switching operation means (lift shut release switch)
63 Dial

Claims (3)

  A pre-processing unit (6) for cutting and transporting cereals is mounted on the front part of the traveling machine body (2) supported by the crawler traveling device (1L, 1R) so as to be movable up and down, and the pre-processing unit ( 6) In the combine provided with the pre-processing unit drive stop control for automatically stopping the driving of the pre-processing unit (6) when the vehicle is raised to a predetermined height, the main shift provided in the control unit (4) of the combine A combine operating means (62) for switching the preprocessing section drive stop control to an executable state or an inexecutable state is disposed near the front of the lever (19).   The combine according to claim 1, wherein a switch with a dial is adopted as the switching operation means (62), and the lower limit height of the preprocessing section (6) can be set via the dial (63).   A pre-processing unit (6) for cutting and transporting cereals is mounted on the front part of the traveling machine body (2) supported by the crawler traveling device (1L, 1R) so as to be movable up and down, and the pre-processing unit ( 6) In the combine provided with the pre-processing unit drive stop control for automatically stopping the driving of the pre-processing unit (6) when the vehicle is raised to a predetermined height, the main shift provided in the control unit (4) of the combine A combiner characterized in that the lever (19) is provided with switching operation means (62 ') for switching the preprocessing unit drive stop control to an executable state or an inexecutable state.

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