JP2012143193A - Combine harvester - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide technologies for reducing false operation of a combine harvester and improving the operability.SOLUTION: The combine harvester 100 includes an engine 71, a reaping part 2 to be driven with the power of the engine 71 to reap grain culms, and a threshing part 3 to be driven with the power of the engine 71 to thresh the reaped grain culms. The combine harvester 100 also includes a reaping clutch CL1 for transmitting or blocking the power of the engine 71 to the reaping part 2, a threshing clutch CL2 for transmitting or blocking the power of the engine 71 to the threshing part 3, and a dial switch 821 for selecting whether the reaping clutch CL1 and the threshing clutch CL2 transmit or block the power of the engine 71. The dial switch 821 can be shifted to an on-position to transmit the power of the engine 71 or to an off-position to block the power of the engine 71. The power of the engine is blocked by the pushing operation of the dial switch even when the dial switch is set at the on-position.

Description

  The present invention relates to a combine technique. More specifically, the present invention relates to a technique for reducing the erroneous operation of the combine and improving the operability.

  2. Description of the Related Art Conventionally, there is known a combine that cuts cereal grains while running and threshs the harvested cereal grains. The combine is provided with a reaping part for reaping the cereal and a threshing part for threshing the harvested cereal. Therefore, a plurality of operating tools for operating the driving state of the reaping part, the threshing part, and the like are arranged around the driver's seat where the operator is seated.

  Furthermore, in recent years, there has been a tendency for the number of operation tools to increase due to the multifunction of the combine. For this reason, there has been a demand for a combine that has a simple configuration but good operability and can reduce erroneous operations. Then, the combine provided with the dial switch which can select any one of the stop of a reaping part and a threshing part, the drive of only a threshing part, and the drive of a reaping part and a threshing part was proposed (for example, refer patent document 1).

  However, the combine shown in Patent Document 1 is configured to be able to select any one of stopping of the reaping part and the threshing part, driving of the threshing part only, and driving of the reaping part and the threshing part by a turning operation of the dial switch. In some cases, the operator's carelessness may lead to erroneous operations. Moreover, since the combine shown in patent document 1 is a structure which stops a cutting part and a threshing part by rotation operation of a dial switch, the improvement of operativity, such as being able to stop a cutting part and a threshing part still more rapidly, is requested | required. It was.

JP 2009-232797 A

  The present invention has been made to solve such problems, and it is an object of the present invention to provide a technique for reducing the erroneous operation of the combine and improving the operability.

  The problem to be solved by the present invention is as described above. Next, means for solving the problem will be described.

That is, in claim 1,
Engine,
A cutting part driven by the power of the engine to reap cereal grains,
In a combine comprising:
A cutting clutch that transmits or blocks the power of the engine to the cutting unit;
A threshing clutch that transmits or blocks the power of the engine to the threshing unit;
A dial switch capable of selecting whether the cutting clutch and the threshing clutch transmit or cut off the power of the engine; and
The dial switch can be switched between a turning position for transmitting the power of the engine by a turning operation and a cutting position for cutting off the power of the engine, and the engine can be operated by a pushing operation even in a state set to the turning position. It is said that the power of is cut off.

In claim 2, in the combine according to claim 1,
The reaping clutch cuts off the power of the engine, and the threshing clutch includes a hand switch for instructing to transmit the power of the engine.

In claim 3, in the combine according to claim 2,
When the dial switch is rotated or pushed, the operation of the hand switch that is performed before the turning or pushing operation of the dial switch is invalidated.

  As effects of the present invention, the following effects can be obtained.

  According to the combine described in claim 1, it is possible to select driving or stopping of the mowing unit and the threshing unit by rotating the dial switch. Thereby, since driving of only the threshing unit cannot be selected, it is possible to reduce erroneous operations due to carelessness of the operator. Furthermore, a cutting part and a threshing part can be stopped only by pushing operation of a dial switch. Thereby, it becomes possible to improve the operativity for stopping a cutting part and a threshing part quickly.

  According to the combine described in claim 2, the threshing portion can be driven by the operation of the hand handling switch even when the reaping portion and the threshing portion are stopped. Further, even when the reaping part and the threshing part are driven, the reaping part can be stopped by operating the hand switch. Thereby, since it can instruct | indicate the drive of only a threshing part, it becomes possible to reduce the erroneous operation by an operator's carelessness. In addition, the operability for performing the handling operation can be improved.

  According to the combine described in claim 3, even when only the threshing part is driven, the cutting part and the threshing part can be driven or stopped only by the turning operation of the dial switch. Thereby, since the operation method of a cutting part and a threshing part can be simplified, it becomes possible to reduce the erroneous operation by an operator's carelessness. Furthermore, the threshing portion can be stopped only by the pressing operation of the dial switch. Thereby, it becomes possible to improve the operativity for stopping a threshing part quickly.

The figure which shows the whole structure of a combine. The figure which shows the structure of the power transmission mechanism of a combine. The figure which shows the structure of the control system of a combine. The figure which shows the structure of a counter case. (A) The figure which shows the control part of a combine. (B) The figure which shows the dial switch and the handling switch provided in the operation panel. (A) The figure which shows rotation operation of a dial switch. (B) The figure which shows pushing operation of a dial switch and a handling switch. The figure which shows the state in which the motive power of an engine is transmitted to the cutting part, the threshing part, and the selection part. The figure which shows the state from which the motive power of an engine is not transmitted to the cutting part, the threshing part, and the selection part. The figure which shows the state in which the motive power of an engine is transmitted only to the threshing part and the selection part. The figure which shows the other structure of a dial switch.

  First, the combine 100 which concerns on one Embodiment of this invention is demonstrated easily.

  FIG. 1 is a diagram illustrating the overall configuration of the combine 100. As shown in FIG. 1, the combine 100 mainly includes a traveling unit 1, a mowing unit 2, a threshing unit 3, a sorting unit 4, a grain storage unit 5, a waste disposal unit 6, and a power unit 7. And the control unit 8.

  The traveling unit 1 is provided in the lower part of the body frame F. The traveling unit 1 mainly includes a transmission 11 and a pair of left and right crawler traveling devices 12 and 12 (see FIG. 2). The transmission 11 transmits the power of an engine 71 described later to the crawler type traveling devices 12 and 12. The crawler type traveling devices 12 and 12 cause the combine 100 to travel in the forward direction or the reverse direction. The crawler type traveling devices 12 and 12 turn the combine 100 left and right by changing the left and right drive states.

  The cutting part 2 is provided at the front part of the body frame F. The cutting unit 2 mainly includes a weeding tool 21, a pulling device 22, a cutting device 23, and a conveying device 24 (see FIG. 2). The weeding tool 21 weeds cereals in the field when the combine 100 travels. The pulling device 22 causes the cereals that have been weeded by the weeding tool 21. The cutting device 23 cuts the culm caused by the pulling device 22. The transport device 24 transports the cereals cut by the cutting device 23 to the threshing unit 3.

  The threshing unit 3 is provided in the upper part of the body frame F and behind the cutting unit 2. The threshing unit 3 is mainly composed of a feed chain 31 and a handling cylinder 32 (see FIG. 2). The feed chain 31 inherits the cereal straw from the transport device 24 that constitutes the cutting unit 2 and transports it to the rejecting processing unit 6. The handling cylinder 32 threshs the cereal straw conveyed by the feed chain 31.

  The sorting unit 4 is provided above the body frame F and below the threshing unit 3. The sorting unit 4 mainly includes a swing sorting device 41, a wind sorting device 42, a grain conveying device 43, and a sawdust discharging device 44 (see FIG. 2). The swing sorting device 41 sorts the cereals falling from the threshing unit 3 into cereal grains and sawdust. The wind sorting device 42 further sorts the cereals sorted by the swing sorting device 41 into grains and swarf. The grain conveying device 43 conveys the grain selected by the swing sorting device 41 and the wind sorting device 42 to the grain storage unit 5. The swarf discharging device 44 discharges the swarf and the like sorted by the swing sorting device 41 and the wind sorting device 42 to the outside.

  The grain storage unit 5 is provided on the upper side of the body frame F and on the side of the threshing unit 3 and the sorting unit 4. The grain storage part 5 is mainly comprised by the glen tank 51 and the grain discharge apparatus 52 (refer FIG. 2). The Glen tank 51 stores the grains conveyed from the sorting unit 4. The grain discharging device 52 discharges the grain stored in the Glen tank 51 to an arbitrary position via the auger.

  The waste disposal unit 6 is provided on the upper part of the body frame F and behind the threshing unit 3. The waste disposal unit 6 mainly includes a waste transporting device 61 and a waste cutting device 62 (see FIG. 2). The waste transporting device 61 inherits the threshed culm from the feed chain 31 constituting the threshing unit 3 and transports it to the waste cutting device 62. The waste cutting device 62 cuts the grain straw transported by the waste transport device 61 and discharges it to the outside.

  The power unit 7 is provided at the upper part of the body frame F and in front of the grain storage unit 5. The power unit 7 is mainly composed of an engine 71 and a counter case 72 (see FIG. 2). The engine 71 generates power by burning fuel. The counter case 72 transmits the power of the engine 71 to the cutting unit 2, the threshing unit 3, the sorting unit 4, and the like.

  The control unit 8 is provided on the upper part of the body frame F and above the power unit 7. The control unit 8 mainly includes a driver's seat 81 and an operation panel 82 (see FIG. 5). The driver's seat 81 is a seat on which an operator sits when operating the combine 100. On the operation panel 82, a plurality of operation tools used for steering the combine 100 are arranged.

  With such a configuration, the operator can operate the combine 100 by operating the operation tool while sitting on the driver's seat 81. The combine 100 harvests the culm while running and threshs the harvested culm. The combine 100 sorts the harvested cereals into cereal grains and swarf and stores the cereal grains and allows the cereal grains to be discharged to an arbitrary position.

  Next, the power transmission mechanism of the combine 100 according to the present embodiment will be described.

  FIG. 2 is a diagram illustrating a configuration of the power transmission mechanism of the combine 100. As shown in FIG. 2, the power transmission mechanism of the combine 100 is mainly composed of a transmission 11, a counter case 72, and a rotating shaft and a belt that transmit the power of the engine 71 to other parts. In the following description, when the power of the engine 71 input to the counter case 72 via the continuously variable transmission 111 is designated, it is assumed that “power from the continuously variable transmission 111”.

  As described above, the transmission 11 transmits the power of the engine 71 to the crawler type traveling devices 12 and 12. The power of the engine 71 is input to the transmission 11 via the belt b1. The transmission 11 includes a continuously variable transmission 111, an auxiliary transmission, and the like, and converts the power of the engine 71 into hydraulic pressure and then transmits the power to the crawler type traveling devices 12 and 12 as arbitrary power. Thereby, the operator can control the drive state of the crawler type traveling devices 12 and 12 via the transmission 11, and can drive the combine 100 in arbitrary directions.

  As described above, the counter case 72 transmits the power of the engine 71 to the reaping unit 2, the threshing unit 3, the selection unit 4, and the like. The power of the engine 71 is input to the counter case 72 via the belts b2 and b3. Furthermore, the power from the continuously variable transmission 111 is input to the counter case 72 via the belts b4 and b5. The counter case 72 includes a planetary gear mechanism 729, combines the power of the engine 71 and the power from the continuously variable transmission 111 and transmits the combined power to the feed chain 31 constituting the threshing unit 3. Further, the counter case 72 transmits the power from the continuously variable transmission 111 to the cutting unit 2. Thereby, the counter case 72 can synchronize the conveyance speed by the feed chain 31 and the cutting speed by the cutting unit 2 with the traveling speed of the combine 100. The counter case 72 transmits the power of the engine 71 to the handling cylinder 32 and the sorting unit 4 constituting the threshing unit 3.

  In the combine 100, a cutting clutch CL1 that transmits or blocks the power of the engine 71 to the cutting unit 2 is provided. Specifically, a reaping clutch CL <b> 1 that transmits or interrupts the power from the continuously variable transmission 111 to the reaping part 2 is provided. As shown in FIG. 3, the reaping clutch CL1 is connected to a control unit ECU that can transmit a control signal to the reaping clutch CL1. The control device ECU is connected to a dial switch 821 (see FIGS. 5A and 5B) that can transmit an input signal to the control device ECU. In this combine 100, the cutting clutch CL1 is a so-called dog clutch and is provided inside the counter case 72.

  Further, in the present combine 100, a threshing clutch CL2 for transmitting or blocking the power of the engine 71 to the threshing unit 3 is provided. As shown in FIG. 3, the threshing clutch CL2 is connected to a control unit ECU that can transmit a control signal to the threshing clutch CL2. The control device ECU is connected to a dial switch 821 (see FIGS. 5A and 5B) that can transmit an input signal to the control device ECU. In the present combine 100, the threshing clutch CL2 is a so-called tension clutch, and is provided so that the pulley contacts the belt b3.

  Next, the configuration of the counter case 72 and the power transmission path will be described in detail.

  FIG. 4 is a diagram illustrating the configuration of the counter case 72. As shown in FIG. 4, the counter case 72 mainly includes a first input shaft 721, a second input shaft 722, a first intermediate shaft 723, a second intermediate shaft 724, a cutting unit drive shaft 725, and a selection. A part drive shaft 726, a third intermediate shaft 727, and a feed chain drive shaft 728 are configured. The counter case 72 shows a typical configuration and may have different parts in detail.

  The first input shaft 721 is rotatably supported so as to be perpendicular to the output shaft 71o of the engine 71. A pulley 721a is attached to one end of the first input shaft 721, and a belt b3 is hung on the pulley 721a. A pulley 721b is attached to the other end of the first input shaft 721, and a belt b6 is hung on the pulley 721b. Thus, the first input shaft 721 can transmit the power of the engine 71 to the handling cylinder 32 that constitutes the threshing unit 3. The belt b3 hung on the pulley 721a transmits the power of the engine 71 when the pulley of the threshing clutch CL2 pushes the belt b3 to apply tension.

  The second input shaft 722 is rotatably supported so as to be parallel to the output shaft 111o of the continuously variable transmission 111. A pulley 722a is attached to one end of the second input shaft 722, and a belt b5 is hung on the pulley 722a. A high speed gear 722 h and a standard gear 722 s are rotatably supported in the middle of the second input shaft 722. The high speed gear 722h and the standard gear 722s are connected to the second input shaft 722 via a one-way clutch.

  The first intermediate shaft 723 is rotatably supported so as to be parallel to the second input shaft 722. A high speed gear 723 h and a standard gear 723 s are rotatably supported in the middle portion of the first intermediate shaft 723. The high speed gear 723h is meshed with a high speed gear 722h provided on the second input shaft 722, and the standard gear 723s is meshed with a standard gear 722s provided on the second input shaft 722. Note that either the high speed gear 723h or the standard gear 723s is coupled to the first intermediate shaft 723 when the slider constituting the reaping clutch CT1 slides and engages.

  The second intermediate shaft 724 is connected to the first intermediate shaft 723 by a spline structure and is rotatably supported. A high speed gear 724 h and a standard gear 724 s are rotatably supported in the middle portion of the second intermediate shaft 724. Note that either the high-speed gear 724h or the standard gear 724s is connected to the second intermediate shaft 724 by sliding and engaging the slider that constitutes the clutch.

  The cutting unit drive shaft 725 is rotatably supported so as to be parallel to the second intermediate shaft 724. A torque limiter 725 t is provided at one end of the cutting unit drive shaft 725. An input gear 725a is provided on the side surface of the torque limiter 725t, and the input gear 725a and the output gear 724a provided on the second intermediate shaft 724 are engaged with each other. A pulley 725b is attached to the other end portion of the cutting unit drive shaft 725, and a belt b7 is hung on the pulley 721b. Thereby, the cutting unit drive shaft 725 can transmit the power from the continuously variable transmission 111 to the cutting unit 2. For this reason, the cutting speed by the cutting part 2 can be synchronized with the traveling speed of the combine 100.

  The selection unit drive shaft 726 is rotatably supported so as to be parallel to the second intermediate shaft 724. An input gear 726 a is attached to one end of the sorting unit drive shaft 726, and the input gear 726 a and the output gear 721 c provided on the first input shaft 721 are engaged with each other. A pulley 726b is attached to the other end of the sorting unit drive shaft 726, and a belt b8 is hung on the pulley 726b. As a result, the sorting unit drive shaft 726 can transmit the power of the engine 71 to the sorting unit 4.

  A high speed gear 726h and a standard gear 726s are provided in the middle of the sorting unit drive shaft 726. The high speed gear 726h is meshed with a high speed gear 724h provided on the second intermediate shaft 724, and the standard gear 726s is meshed with a standard gear 724s provided on the second intermediate shaft 724. Accordingly, the selection unit drive shaft 726 can also transmit the power of the engine 71 to the cutting unit 2 by rotating the second intermediate shaft 724 via the high speed gear 726h or the standard gear 726s.

  Further, a planetary gear mechanism 729 is provided in the middle of the selection unit drive shaft 726. The outer gear 729a of the planetary gear mechanism 729 is meshed with an output gear 724b provided on the second intermediate shaft 724, and the inner gear 729b of the planetary gear mechanism 729 is meshed with a planetary gear 729d supported by a carrier 729c. Yes.

  The third intermediate shaft 727 is rotatably supported so as to be parallel to the sorting unit drive shaft 726. An input gear 727a is rotatably supported in the middle portion of the third intermediate shaft 727. The input gear 727a is meshed with an output gear 729e provided on a carrier 729c constituting the planetary gear mechanism 729. The input gear 727a is connected to the third intermediate shaft 727 by sliding and engaging a slider constituting the clutch.

  The feed chain drive shaft 728 is rotatably supported so as to be parallel to the third intermediate shaft 727. An input sprocket 728a is provided in the middle of the feed chain drive shaft 728. A chain 727c of an output sprocket 727b provided on the third intermediate shaft 727 is hung on the input sprocket 728a. Thereby, the feed chain drive shaft 728 can transmit the power of the engine 71 and the power from the continuously variable transmission 111 to the feed chain 31. For this reason, the conveyance speed by the feed chain 31 can be synchronized with the traveling speed of the combine 100.

  Next, the dial switch 821 and the hand switch 822 provided on the operation panel 82 of the control unit 8 will be described in detail. In the present embodiment, the dial switch 821 and the hand switch 822 are arranged on the side (side column) of the driver seat 81. However, it can also be provided on the handle column, for example, and the position is not limited.

  FIG. 5A is a diagram showing the control unit 8 of the combine 100. FIG. 5B is a diagram showing a dial switch 821 and a hand switch 822 provided on the operation panel 82. As shown in FIGS. 5A and 5B, the operation unit 8 of the combine 100 is provided with a plurality of operation tools such as a dial switch 821 and a hand switch 822.

  The dial switch 821 can select whether the reaping clutch CL1 and the threshing clutch CL2 transmit or cut off the power of the engine 71. That is, when the dial switch 821 is rotated and set to the on position (see the white arrow in FIG. 6A), the cutting clutch CL1 and the threshing clutch CL2 transmit the power of the engine 71. When the dial switch 821 is rotated and set to the cut position (see the black arrow in FIG. 6A), the cutting clutch CL1 and the threshing clutch CL2 shut off the power of the engine 71. The dial switch 821 is configured to be maintained in a rotated state when it is rotated to the on position or the off position. Furthermore, the dial switch 821 is configured to rotate to the off position when it is pushed in the state set to the on position.

  Here, it is assumed that the operator turns the dial switch 821 to set the dial switch 821 to the on position (see the white arrow in FIG. 6A). Note that white arrows shown in FIG. 7 indicate the transmission direction of power of the engine 71. The black arrows shown in FIG. 7 indicate the transmission direction of power from the continuously variable transmission 111. 7 indicates the direction of transmission of power obtained by combining the power of the engine 71 and the power from the continuously variable transmission 111.

  When the dial switch 821 is set to the on position, the threshing clutch CL2 applies tension to the belt b3, so that the power of the engine 71 is input to the counter case 72. More specifically, the power of the engine 71 is transmitted to the first input shaft 721 of the counter case 72 via the belt b3 to rotate the first input shaft 721. Thereby, the handling cylinder 32 which comprises the threshing part 3 is driven, and it becomes possible to thresh the cereal.

  The power of the engine 71 is transmitted to the sorting unit drive shaft 726 via the first input shaft 721 and rotates the sorting unit drive shaft 726. Thereby, the selection part 4 is driven and it becomes possible to select a grain, sawdust, etc.

  On the other hand, the power from the continuously variable transmission 111 is transmitted to the second input shaft 722 of the counter case 72 via the belt b5 to rotate the second input shaft 722. The rotation of the second input shaft 722 is transmitted to the first intermediate shaft 723 via the high speed gears 722h and 723h or the standard gears 722s and 723s, and the first intermediate shaft 723 and the second intermediate shaft 724 are rotated. The rotation of the second intermediate shaft 724 is transmitted to the cutting unit drive shaft 725 via the gears 724a and 725a, and rotates the cutting unit drive shaft 725. Thereby, the reaping part 2 is driven and the cereal can be harvested.

  The rotation of the carrier 729c determined by the rotation of the sorting unit driving shaft 726 and the rotation of the second intermediate shaft 724 is transmitted to the third intermediate shaft 727 via the gears 729e and 727a. Rotate. The rotation of the third intermediate shaft 727 is transmitted to the feed chain drive shaft 728 via the chain 727c, and rotates the feed chain drive shaft 728. Thereby, the feed chain 31 is driven and the cereal can be conveyed.

  Next, it is assumed that the operator turns the dial switch 821 and sets the dial switch 821 to the cut position (see the black arrow in FIG. 6A). A white arrow shown in FIG. 8 indicates the transmission direction of the power of the engine 71. Black arrows shown in FIG. 8 indicate the transmission direction of power from the continuously variable transmission 111.

  When the dial switch 821 is set to the off position, the threshing clutch CL2 relaxes the tension applied to the belt b3, so that the power of the engine 71 is not input to the counter case 72. More specifically, the power of the engine 71 is not transmitted to the first input shaft 721 of the counter case 72 via the belt b3, and the first input shaft 721 cannot be rotated. Thereby, it becomes possible to stop the drive of the handling cylinder 32 which comprises the threshing part 3. FIG.

  Further, since the power of the engine 71 is not transmitted to the sorting unit drive shaft 726, the sorting unit drive shaft 726 cannot be rotated. Thereby, it becomes possible to stop the drive of the selection part 4.

  On the other hand, the power from the continuously variable transmission 111 is transmitted to the second input shaft 722 of the counter case 72 via the belt b5 to rotate the second input shaft 722. However, since the cutting clutch CL1 is switched to the neutral position, the rotation of the second input shaft 722 is not transmitted to the first intermediate shaft 723 via the high speed gears 722h and 723h or the standard gears 722s and 723s. The intermediate shaft 723 and the second intermediate shaft 724 cannot be rotated. Thereby, it becomes possible to stop the drive of the cutting part 2.

  Further, since the sorting unit drive shaft 726 does not rotate and the second intermediate shaft 724 does not rotate, the third intermediate shaft 727 and the feed chain drive shaft 728 cannot be rotated. As a result, the drive of the feed chain 31 can be stopped.

  Next, it is assumed that the operator pushes the dial switch 821 while the dial switch 821 is set to the on position (see the white arrow in FIG. 6B). When the dial switch 821 is pushed and operated in the set position, the dial switch 821 is rotated to the cut position by the biasing force of the spring (see the black arrow in FIG. 6B). For this reason, the control mode of the combine 100 is the same as when the operator turns the dial switch 821 to set it to the cut position (see the black arrow in FIG. 6A).

  With such a configuration, the driving or stopping of the reaping unit 2 and the threshing unit 3 can be selected by rotating the dial switch 821. Thereby, since the drive of only the threshing part 3 cannot be selected, it becomes possible to reduce the erroneous operation by an operator's carelessness. Furthermore, the cutting part 2 and the threshing part 3 can be stopped only by the pressing operation of the dial switch 821. Thereby, it becomes possible to improve the operativity for stopping the cutting part 2 and the threshing part 3 quickly.

  The hand switch 822 can be set so that only the threshing clutch CL2 transmits the power of the engine 71. That is, when the hand switch 822 is pushed and set to the on position, the reaping clutch CL1 cuts off the power from the continuously variable transmission 111, and the threshing clutch CL2 transmits the power of the engine 71. Note that the hand switch 822 can be configured such that the lamp is lit in the state set to the on position, and the operator can easily recognize the operating state.

  Here, it is assumed that the dial switch 821 is set to the off position and the operator pushes the hand switch 822 to set it to the on position (see the white arrow in FIG. 6B). A white arrow shown in FIG. 9 indicates the transmission direction of the power of the engine 71. Black arrows shown in FIG. 9 indicate the transmission direction of power from the continuously variable transmission 111.

  When the hand switch 822 is set to the on position, the threshing clutch CL2 applies tension to the belt b3, so that the power of the engine 71 is input to the counter case 72. More specifically, the power of the engine 71 is transmitted to the first input shaft 721 of the counter case 72 via the belt b3 to rotate the first input shaft 721. Thereby, the handling cylinder 32 which comprises the threshing part 3 is driven, and it becomes possible to thresh the cereal.

  The power of the engine 71 is transmitted to the sorting unit drive shaft 726 via the first input shaft 721 and rotates the sorting unit drive shaft 726. Thereby, the selection part 4 is driven and it becomes possible to select a grain, sawdust, etc.

  On the other hand, the power from the continuously variable transmission 111 is transmitted to the second input shaft 722 of the counter case 72 via the belt b5 to rotate the second input shaft 722. However, since the reaping clutch CL1 is maintained at the neutral position, the rotation of the second input shaft 722 is not transmitted to the first intermediate shaft 723 via the high speed gears 722h and 723h or the standard gears 722s and 723s. The shaft 723 and the second intermediate shaft 724 cannot be rotated. Thereby, it becomes possible to maintain the stop state of the cutting part 2.

  Further, the rotation of the carrier 729c determined by the rotation of the sorting unit driving shaft 726 is transmitted to the third intermediate shaft 727 via the gears 729e and 727a, and the third intermediate shaft 727 is rotated. The rotation of the third intermediate shaft 727 is transmitted to the feed chain drive shaft 728 via the chain 727c, and rotates the feed chain drive shaft 728. Thereby, the feed chain 31 is driven and the cereal can be conveyed.

  Next, it is assumed that the dial switch 821 is set to the on position and the operator pushes the hand switch 822 to set it to the on position (see the white arrow in FIG. 6B). In this case, the threshing clutch CL2 is maintained in a state where tension is applied to the belt b3, and the cutting clutch CL1 is switched to the neutral position. For this reason, the control mode of the combine 100 is the same as when the operator pushes the hand switch 822 and sets it to the on position while the dial switch 821 is set to the off position.

  With such a configuration, even when the cutting unit 2 and the threshing unit 3 are stopped, the threshing unit 3 can be driven by the operation of the hand switch 822. Further, even when the cutting unit 2 and the threshing unit 3 are driven, the cutting unit 2 can be stopped by operating the hand switch 822. Thereby, since it can instruct | indicate the drive of only the threshing part 3, it becomes possible to reduce the erroneous operation by an operator's carelessness. In addition, the operability for performing the handling operation can be improved.

  Further, in this combine 100, when the dial switch 821 is turned or pushed, the push operation of the hand switch 822 performed before the turning or pushing operation of the dial switch 821 is invalid. It is characterized by becoming.

  With such a configuration, even when only the threshing unit 3 is driven, the cutting unit 2 and the threshing unit 3 can be driven or stopped only by the turning operation of the dial switch 821. Thereby, since the operation method of the cutting part 2 and the threshing part 3 can be simplified, it becomes possible to reduce the erroneous operation by an operator's carelessness. Furthermore, the threshing unit 3 can be stopped only by pushing the dial switch 821. Thereby, it becomes possible to improve the operativity for stopping the threshing part 3 quickly.

  In addition, as shown in FIG. 10, it is good also as a structure which stops the drive of the cutting part 2, when the dial switch 821 is further rotated from an on position. With such a configuration, for example, when the alignment is performed, the harvesting unit 2 can be stopped, so that it is possible to prevent unintentionally harvesting the grain culm that is not intended. Even in such a case, the driving of the threshing unit 3 can be stopped when the dial switch 821 is pushed.

DESCRIPTION OF SYMBOLS 100 Combine 1 Traveling part 2 Cutting part 3 Threshing part 4 Sorting part 5 Grain storage part 6 Exclusion processing part 7 Power part 8 Steering part 11 Transmission 12 Crawler type traveling apparatus 71 Engine 72 Counter case 111 Continuously variable transmission 721 First Input shaft 722 Second input shaft 723 First intermediate shaft 724 Second intermediate shaft 725 Mowing drive shaft 726 Sorting drive shaft 727 Third intermediate shaft 728 Feed chain drive shaft 729 Planetary gear mechanism 821 Dial switch 822 Hand switch CL1 Mowing Clutch CL2 Threshing clutch

Claims (3)

Engine,
A cutting part driven by the power of the engine to reap cereal grains,
In a combine comprising:
A cutting clutch that transmits or blocks the power of the engine to the cutting unit;
A threshing clutch that transmits or blocks the power of the engine to the threshing unit;
A dial switch capable of selecting whether the cutting clutch and the threshing clutch transmit or cut off the power of the engine; and
The dial switch can be switched between a turning position for transmitting the power of the engine by a turning operation and a cutting position for cutting off the power of the engine, and the engine can be operated by a pushing operation even in a state set to the turning position. A combine that cuts off the power of the machine.   The hand cutting switch which instruct | indicates that the said threshing clutch interrupts | blocks the motive power of the said engine by pushing operation, and transmits the motive power of the said engine is comprised. Combine.   When the dial switch is turned or pushed, the push operation of the hand switch made before the turning or pushing operation of the dial switch is invalidated. The combine according to claim 2.

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