JP2003274735A - Combine harvester - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a combine harvester by forming a wide space on the left side of a driver's seat 20 by an installation space of switch panels 204 and arranging the driver's seat 20 and a steering wheel 19 on nearly a straight line in the front and rear directions toward the left so as to visually confirm the switch panels 204. <P>SOLUTION: The combine harvester is obtained by installing the steering wheel 19 in front of the driver's seat 20 and arranging a speed change lever 75 and an operating lever 171 on the left side of the driver's seat 20. In the combine harvester, the switch panels 204 are arranged in front of the driver's seat 20 and in a part where the steering wheel 19 is installed. <P>COPYRIGHT: (C)2003,JPO

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a combine for continuously cutting and threshing grain culms.

[0002]

Conventionally, there is a technique for transmitting the engine driving force to the mission case for driving the threshing section, the mowing section and the traveling crawler to perform the harvesting work, but a switch panel is arranged on the left side of the driver's seat. With the structure in which the switches are installed, the space on the left side of the driver's seat is narrowed and the driver's living space cannot be sufficiently secured, and the driver's seat and the steering handle can be installed on the left side (center side of the machine). Instead, for steering cases that have steering handles,
There is a problem that the travel speed change lever or the transmission case is separated in the left-right width direction.

[0003]

SUMMARY OF THE INVENTION Therefore, according to the present invention, in a combine in which a steering handle is provided in front of a driver's seat and a shift lever and a working lever are provided on the left side of the driver's seat, the steering handle is arranged in front of the driver's seat. Since a switch panel is installed in the part, the left side space of the driver's seat can be made wider by the installation space of the switch panel compared to the conventional switch panel placed on the left side of the driver's seat, and the driver's seat and the steering wheel can be moved forward and backward. You can place it on the straight line of the direction and install it to the left,
Moreover, the switch panel can be easily visually confirmed.

Further, a center panel is provided at the center of the steering handle, and left and right switch panels are provided on both sides of the steering handle. For example, the display of the harvesting work status or the adjustment of cutting and threshing of grain stems, Or, the switches and the display can be arranged separately for adjustment of overall driving operation,
In addition, the switch that needs to be switched between the mowing traveling and the headland turning can be arranged at a position where visual confirmation can be easily performed, and it is possible to reduce forgetting to turn on the switch or forgetting to turn off the switch.

Further, since the work lever positioning body and the work switch are provided on the same support, the number of parts of the work lever mounting structure can be reduced, and the work lever can be supported at the switching position and the switching position can be detected. It can be done properly.

Further, a high-speed operation switch which is operated by operating the gear shift lever near the highest speed is provided. For example, when the headland of a wetland is turned, the high-speed operation switch is turned on slightly before the gear shift lever is operated at the highest speed. It is possible to solve the shortage of horsepower due to the transmission loss of the traveling speed change member by switching to the operation of directly driving the traveling crawler by the output of the engine.

Further, when the high speed operation switch is turned on, the shifting of the drive speed of the mowing section is made neutral, and the lack of horsepower due to the transmission loss of the traveling speed changing member is eliminated, and the driving load of the mowing section is reduced. However, it is possible to effectively utilize the output of the engine to perform headland turning that requires large horsepower.

When the threshing section is being driven, the mowing section is driven at a low speed by driving the mowing section of the work lever to drive the mowing section. When the mowing and threshing operations are started, the mowing section is operated at a low speed. It is possible to prevent the work load from suddenly increasing, and to start the harvesting work smoothly.

Further, a bypass clutch that short-circuits the input shaft of the transmission case and the auxiliary transmission mechanism is provided, and an automatic running switch that automatically turns on the bypass clutch based on the high speed operation switch is provided on the switch panel. The bypass clutch automatic control can be turned on / off by an automatic running switch of the switch panel to appropriately perform high horsepower running near the maximum speed, thereby improving running performance and operability.

Further, a threshing clutch and a reaping clutch which are turned on and off by a work lever, a reaping transmission mechanism, a feed chain clutch, and a counter case which respectively input power output from the rear side of the engine and main shift output of a transmission case, The compulsory drive clutch of the mowing unit is provided, and each part of the threshing unit and the mowing unit can be driven according to the state of the mowing culm or the working condition such as mowing traveling or headland turning. It is possible to improve the operation performance and operability of the parts.

Further, a traveling speed change member controlled by the speed change lever and the steering handle and a turning member controlled by the speed change lever and the steering handle are provided in the transmission case, and the turning radius is set regardless of the speed change of the speed change lever. It is possible to maintain the driving speed substantially constant and reduce the traveling speed in proportion to the turning radius of the steering handle to improve the traveling performance and the driving operability.

Further, by providing a bypass clutch for decelerating the traveling speed change member by turning operation of the steering handle and for short-circuiting the auxiliary speed change mechanism on the lower side of the traveling speed change member and the output shaft on the front side of the engine, the field headland It is possible to improve the running performance of a wetland by reducing the spin turn that requires a large horsepower to a proper speed and driving the running crawler by utilizing the high horsepower output of the engine.

[0013]

BEST MODE FOR CARRYING OUT THE INVENTION Embodiments of the present invention will be described in detail below with reference to the drawings. FIG. 1 is an overall perspective view of the combine, and FIG. 2 is a right side view thereof. In the figure, 1 is a pair of left and right track frames on which a pair of left and right traveling crawlers 2 are mounted, and 3 is installed on the left and right track frames 1 described above. A machine stand 4 is a threshing unit which is a threshing machine in which a feed chain 5 is stretched on the left side and which includes a handling cylinder 6 and a processing cylinder, and 7 is a raising mechanism 8, a cutting blade 9, a grain culm conveying mechanism 10, and the like. A mowing unit provided, 11 is a hydraulic elevating cylinder for moving the mowing unit 7 up and down via the mowing frame 12, 13 is an straw processing unit that faces the end of the straw chain 14, and 15 is a grain lifting cylinder for the grains from the threshing unit 4. 16 and 17 are discharge augers for discharging the grains in the tank 15 to the outside of the machine, and 18 is a driving handle 19.
An operating cabin provided with a driver's seat 20 and an engine 21 provided below the operating cabin 18 are configured so as to continuously mow grain culms and thresh them.

Further, as shown in FIG. 4, the transmission case 22 for driving the traveling crawler 2 is provided with a pair of hydraulic traveling pumps 23 and hydraulic traveling motors 24 to provide a hydraulic continuously variable transmission mechanism for main traveling traveling. Forming traveling speed change member 25
And a pair of hydraulic swing pump 26 and hydraulic swing motor 27
And a turning member 28 that forms a hydraulic continuously variable transmission mechanism for turning, and is connected to an output shaft 29 of the engine 21 via an input shaft 30 of the transmission case 22 to connect the pumps 23, 26. It is configured to drive.

Further, the output shaft 31 of the traveling motor 24
In addition, the drive wheels 34 of the left and right traveling crawlers 2 are interlockingly connected via the sub transmission mechanism 32 and the differential mechanism 33. The differential mechanism 33 includes a pair of left and right symmetrical planetary gear mechanisms 35.
35, each planetary gear mechanism 35 has one sun gear 36.
And three planetary gears 37 that mesh with the outer circumference of the sun gear 36, and a ring gear 38 that meshes with these planetary gears 37.

The planetary gear 37 is the sun gear 36.
Of the left and right sun gears 36, 36 are rotatably supported by the idle shaft 39 and the carrier 41 of the axle 40 on the coaxial line.
And the left and right carriers 41 are arranged to face each other,
The ring gear 38 has internal teeth that mesh with the planetary gears 37 and is rotatably supported by the axle 40.
Are extended to support the drive wheels 34.

The traveling speed change member 25 is used for the traveling pump 2
The forward / reverse rotation of the traveling motor 24 and the rotation speed are controlled by changing the swash plate angle of 3.
Low speed and high speed gears 42 of the output shaft 31 and the auxiliary transmission mechanism 32.
It is configured to transmit to the left and right ring gears 38 via 43, the brake shaft 44, and the branch shaft 45 to rotate the left and right carriers 41. Further, a parking brake 46 is provided on the brake shaft 44, and a reaping drive pulley 47 that transmits a rotational force to the reaper 7 is provided on the output shaft 31 to drive the reaper 7 at a vehicle speed synchronized speed.

As described above, the driving force of the traveling motor 24 transmitted to the ring gear 38 through the branch shaft 45 is transmitted to the left and right carriers 41 through the left and right planetary gear mechanisms 35, and is also transmitted to the left and right carriers 41. The generated rotation is transmitted to the left and right drive wheels 34, and the left and right traveling crawlers 2 are driven in the same direction at the same speed.

Further, the turning member 28 formed by a hydraulic continuously variable transmission mechanism for turning controls the forward / reverse rotation and the rotation speed of the turning motor 27 by changing the swash plate angle of the turning pump 26. Motor shaft 49 with directional output brake 48
A clutch shaft 51 having a steering output clutch 50,
Left and right input gears 52 and 53 that are always meshed with the left and right sun gear 36 are provided, and the clutch shaft 51 is connected via the motor shaft 49 for output of the swing motor 27 and the steering output clutch 50, and the positive clutch shaft 51 is connected to the clutch shaft 51. The left and right input gears 52 and 53 are connected via the rotating gear 54 and the reverse rotating gear 55. Then, the rotational force of the motor 27 is transmitted to the right sun gear 36 via the forward rotation gear 54, and the left sun gear 36 is also transmitted.
When the turning motor 27 is normally rotated (reverse rotation), the left sun gear 36 is reversely rotated (normal rotation), and the right sun gear 36 is normally rotated (reverse rotation). ) And the left and right traveling crawlers 2 are driven in the opposite direction at the same speed.

Then, with the turning motor 27 stopped and the left and right sun gears 36 fixed stationary, the traveling motor 24
When the drive is driven, the rotation of the traveling motor 24 is transmitted to the left and right ring gears 38 at the same rotation speed, and the left and right planetary gear mechanisms 35 are transmitted.
The left and right traveling crawlers 2 are driven by the same number of rotations in the same rotation direction in the left and right via the carrier 41, and the forward and backward straight traveling of the machine body is performed. On the other hand, with the traveling motor 24 stopped and the left and right ring gears 38 fixed stationary,
When the revolving motor 27 is driven to rotate normally or reversely, the left planetary gear mechanism 35 rotates normally or reversely, and the right planetary gear mechanism 3 is rotated.
5 rotates in the reverse or forward direction, drives the left and right traveling crawlers 2 in the opposite direction, and turns the machine body leftward or rightward. Further, by driving the turning motor 27 while driving the traveling motor 24, the machine body turns left and right to correct the course, and the turning radius of the machine body is determined by the output rotation speed of the turning motor 27. .

Further, a fan shaft 56 is connected to the input shaft 30, a compressor 57 for air cooling of the cabin 18 is driven by the fan shaft 56, and the pump shafts 58 and 59 of the traveling and swirling pumps 23 and 26 are connected. The fan shaft 56 is connected to connect the pumps 23 and 26 to the input shaft 30.
And the pump shaft 58 of the traveling pump 23.
And a bypass shaft 61 for providing a bypass clutch 60 is provided between the motor shaft 31 of the traveling motor 24, and when the bypass clutch 60 is turned on, the pump shaft 58 and the motor shaft 31 are gear-connected via the bypass shaft 61. The rotation of the input shaft 30 is transmitted to the sub transmission mechanism 32 without passing through the traveling speed change member 25, and the left and right traveling crawlers 2 are driven by the constant speed rotation of the engine 21.

Further, as shown in FIGS. 5 to 8, the steering handle 19 is provided with a handle shaft 62 having a tilt handle structure.
The handle shaft 62 is rotatably supported on the upper part of the steering case 63 by connecting the upper end sides thereof, and the upper end of the steering input shaft 64 is rotatably supported on the upper part of the steering case 63 so that Steering input shaft 64
The sector gear 66 is meshed with each other to connect the shafts 62 and 64, and the steering input shaft 64 is extended vertically in the substantially center of the steering case 63.

Further, a bearing member 67 is detachably fixed to the left side surface of the steering case 63 approximately in the middle of the vertical width, and one end of the speed change input shaft 68 is rotatably cantilevered to the bearing member 67 via a bearing. Shift input shaft 68
Is supported substantially horizontally in the left-right direction, and the steering input shaft 6
4 The lower end of the input fulcrum shaft 69 is connected to the lower end via a universal joint, and the steering input member 70 is fixed to the input fulcrum shaft 69.
The steering input member 70 is rotatably attached to the speed change input shaft 68, the input connector 71 is detachably fixed to the steering input member 70, and the steering input member 70 and the input connector 71 are connected by a linkage bolt 72. Connected and variable speed input shaft 6
8, the steering input member 70 is rotatably supported by a bearing, and the steering input member 70 is rotatably supported around the steering input shaft 64. In addition, the steering input member 70 is normally and reversely rotated about the core line of the substantially vertical input shaft 64 by the normal and reverse rotation of the steering input shaft 64, and the horizontal and horizontal input shaft 68 is substantially horizontal by the normal and reverse rotation of the shift input shaft 68. The input fulcrum shaft 69 and the steering input member 70 are rotated around the core in a tilted state in the front-rear direction, and at the intersection where the vertical steering input shaft 64 core and the left and right horizontal shift input shaft 68 core intersect at a right angle. The connecting portion of the universal joint of each shaft 64/69 is attached, and the steering input member 64 and the input connecting body 71 are provided around the steering input shaft 64 core wire by the steering input shaft 64 forward / reverse operation of the steering handle 19.
To reverse.

Further, the main transmission shaft 73 is rotatably supported on the lower front side of the steering case 63, and the left end of the main transmission shaft 73, which is horizontally laid horizontally in the left-right direction, is located outside the left side of the steering case 63. The main transmission shaft 73 is projected and connected to the main transmission shaft 73 via the main transmission link 74, and the main transmission shaft 73 is rotated forward and backward by a gear shifting operation in which the main transmission lever 75 is swung in the front-rear direction. The transmission input shaft 6 is provided via the main transmission member 76 and the lower link 77.
A main transmission shaft 73 is connected to the steering gear 8, and the steering input member 70 is rotated about the core of the transmission input shaft 68 in a forward and backward tilting state by the forward and reverse operation of the main transmission shaft 73 of the main transmission lever 75.

Further, a cylindrical shaft type steering output shaft 78 is rotatably attached to the main transmission shaft 73 to fix the link type steering output member 79 to the steering output shaft 78, and a rod type steering coupling member. The upper end of 80 is connected to the input connecting body 71 via a universal joint type steering input connecting part 81, and the lower end of the steering connecting member 80 is steered via a ball joint joint type steering output connecting part 82. The steering mechanism 83 is connected to the output member 79 to change the traveling course.

Further, above the steering output shaft 78, a gear shift output shaft 84 is provided substantially in parallel with the steering output shaft 78 and the steering case 6 is provided.
3 rotatably rotatably supported in the interior of the link type shift output member 8
5 is fixed to the speed change output shaft 84, and the upper end of the rod type speed change coupling member 86 is connected to the input connection body 71 through the universal joint type speed change input connection portion 87, and the ball joint joint type speed change output connection portion 88. The lower end portion of the speed change coupling member 86 is connected to the speed change output member 85 via a transmission mechanism 89 for changing the traveling speed and switching between forward and backward movements.

Further, an inner steering operation shaft 90 and an outer speed change operation shaft 91 of a dual shaft structure which are rotatable relative to each other are rotatably attached to a bearing portion at the center of the left and right width on the rear rear side of the lower portion of the steering case 63. And, ball joint shaft 9 with adjustable length
2 and the gear shift output shaft 84 through the gear shift link, and the upper end portion of the gear shift operation shaft 91 is coupled to the steering output shaft 7 through the ball joint shaft 93 and the steering link whose length is adjustable.
8 is connected to the upper end of the steering operation shaft 90.

Further, lower ends of the operation shafts 90 and 91 are projected below the bottom surface of the steering case 63, and a main speed change rod 95 and a main speed change gear having adjustable lengths are attached to the main speed change arm 94 of the traveling pump 23 shown in FIG. The lower end of the shift operation shaft 91 is connected via a link 96, and the swash plate angle of the traveling pump 23 is adjusted by the forward / reverse operation of the main transmission arm 94 to control the rotation speed of the traveling motor (24) and the forward / reverse switching. Perform stepless change of running speed (main shift) and switching between forward and reverse. Further, the swivel arm 97 of the swivel pump 27 shown in FIG.
9, the lower end of the steering operation shaft 90 is connected, and the swash plate angle of the swivel pump 26 is adjusted by the forward / reverse operation of the swivel arm 97 to control the rotation speed of the swivel motor 27 and to switch the forward / reverse direction. Stepless change of angle (turning radius) and switching of left and right turning directions.

As described above, the steering mechanism 83 changes the steering amount in proportion to the operation amount of the speed change mechanism 89. The turning radius is automatically reduced by the high speed running shift and the turning speed is changed by the low speed running shift. The radius is automatically increased and the turning radius of the left and right traveling crawlers 2 is maintained substantially constant by constant operation of the steering handle 19 regardless of the traveling speed, and the working traveling speed is changed and the machine body is mounted on the uncut grain culm or the like. In addition to performing the course correction along the path, the reverse conical transmission mechanism 89 and the steering mechanism 83 are formed, and the steering input shaft 64 is rotated by the steering operation to operate the steering input member 70, for example, turning. Then, a direction change such as a spin turn is performed by the operation of decelerating the traveling speed, and the gearshift input shaft 68 is rotated by the gearshift operation to operate the steering input member 70 to drive the traveling gearshift. According to perform operations such as stop of the turning output by the running gear Neutral expansion contraction small sequence of turning radius.

Further, as shown in FIG. 8, the auxiliary transmission mechanism 32 is switched between low speed, neutral and high speed by the auxiliary transmission lever 99, and the hydraulic auxiliary transmission cylinder 101 is connected to the auxiliary transmission arm 100 of the traveling motor 24. The auxiliary transmission cylinder 101 is operated to switch the auxiliary transmission arm 100 to a low speed or a high speed, the swash plate angle of the traveling motor 24 is changed to a low speed or a high speed output, and the rotation speed of the traveling motor 24 is controlled to switch the auxiliary transmission between two stages. The sub-transmission mechanism 32
And the traveling motor 24 perform four-stage switching (four-speed switching) of the auxiliary shift.

Further, as shown in FIGS. 9 to 13, the engine 21 is provided inside the engine room cover 102, and the front, rear, left and right side surfaces and the upper surface of the engine 21 are covered with the engine room cover 102, and the engine 21 The transmission case 22 and the radiator 103 are provided on the outside of the cover 102 in front of the engine 2
1, a universal joint shaft 104 is provided between the transmission case 1 and the transmission case 22 to transmit the driving force of the output shaft 29 on the front side of the engine 21 to the input shaft 30 on the rear side of the transmission case 22, and to the left and right traveling crawlers on both sides of the transmission case 22 via the axle cases. 2 drive wheels 34 are pivotally supported, and the mission case 2
The cooling fan 105 of the radiator 103 is provided on the right side surface of the radiator 2, and the radiator 103 and the oil cooler 106 are cooled by the cooling fan 105.

The output shaft 29 of the engine 21 is provided on the front side and the rear side of the engine room cover 102 so as to project therefrom.
The universal joint shaft 104 is connected to the front side of the output shaft 29,
A work output pulley 107 is provided on the rear side of the output shaft 29, and a counter case 108 is provided on the upper surface of the machine stand 3 in front of the threshing unit 4 on the left side of the engine 21. The input pulley 109, the vehicle speed tuning pulley 110, the threshing pulley 111, and the reaper are provided. Pulley 11
2. The selection pulley 113 is pivotally supported by the counter case 108, the input pulley 109 on the rear side of the case 108 is connected to the work output pulley 107 by the belt 114, and the driving force of the engine 21 is transmitted to the counter case 108. Further, a vehicle speed tuning pulley 110 on the right side of the counter case 108 is connected to the belt 115 by the reaping drive pulley 47 of the mission case 22, and the left and right support bases 11 are provided on the front upper surface of the machine base 3.
6 and 117 are erected, and the reaping input case 118 is rotatably supported by the support bases 116 and 117.
8 is connected to the mowing frame 12 and the mowing unit 7 is rotated around the case 118 to move up and down.
18 To the left side of the mowing input pulley 1 via the mowing input shaft 119
20 is pivotally supported, the mowing pulley 112 on the left side of the counter case 108 is connected to the mowing input pulley 120 by the belt 121, and the driving force is transmitted to each part of the mowing section 7.

The threshing pulley 111 on the front side of the counter case 108 is connected to the belt 125 by the drive input pulleys 123 and 124 of the handling cylinder 6 and the processing cylinder 122, respectively.
The sorting pulley 1 is attached to the sorting Kara 126 and the swing sorting mechanism on the lower side.
The drive force is transmitted from 13 to drive each part of the threshing unit 6, and a feed chain input shaft 127 is provided on the left side surface of the counter case 108, and an input shaft 127 is attached to a drive sprocket 128 of the feed chain 5 which is movable to the outside. Power is transmitted from. Further, a discharge driving pulley 129 is provided on the front side of the grain tank 15, the pulley 129 is belt-connected to the work output pulley 107 via a discharge clutch, and the output of the engine 21 is transmitted to the discharge auger 17 to transmit the grain of the tank 15 to the grain. Is discharged.

Further, the ventilation duct 130 is connected to the front side of the engine room cover 102 having a closed structure in which the engine 21 is installed, and the engine room cover 1
02 and the front radiator 103 on the right side of the outer side of the machine, a wind tunnel type dust removing case 131 is provided, and the dust removing case 131 is rotatably mounted around a rear fulcrum shaft, and is placed above the rear part of the right side (outside of the machine) of the dust removing case 131. The outside air intake is opened, and the radiator side filter and the ventilation side filter are joined to the lower part of the left side (inside the machine) of the dust removal case 131. Then, by the cooling fan 105, the dust cooler 131 and the oil cooler 106 and the radiator 103 are filtered through a filter.
The outside shaft is taken in to be cooled, and the output shaft 29 is belt-connected to the generator pulley and the fan pulley in the front part of the engine 21, and the ventilation fan 132 is provided on the front side (coaxially) of the fan pulley. A ventilation fan 132 is provided at a connecting portion between the engine room inside 102 and the ventilation duct 130 to remove dust from the outside air intake case 13
The outside air taken in No. 1 is supplied by the ventilation fan 132 through the ventilation duct 130 into the closed enclosed engine room cover 102 to ventilate the engine room.

Furthermore, the handling case input shaft 133 is pivotally supported by the counter case 108, the shaft 133 is extended in the front-rear direction, and the threshing pulley 111 is provided on the front side of the shaft 133 outside the front surface of the counter case 108. An input pulley 109 is provided on the outer side of the rear surface of the shaft 108 on the rear side of the shaft 133, and a threshing clutch 134 is provided on the handle barrel input shaft 133 to input a constant rotational power of the engine 21. Further, a tuning input shaft 135 is pivotally supported on the right side of the counter case 108, and the shaft 135 on the right outer side of the counter case 108 is supported.
A vehicle speed tuning pulley 110 is provided on the right side, and a belt 115 is tensioned between the pulleys 110 and 47 via a tension roller type reaping clutch to input vehicle speed tuning power from the transmission case 22 to the counter case 108.

Further, a constant rotation shaft 137 which is a counter shaft or a selection input shaft for connecting the right side to the handling cylinder input shaft 133 is connected to a bevel gear 136, and a vehicle speed tuning shaft 138 which is provided substantially parallel to the front side of the shaft 137. Case 108
And a low speed gear 140 and a high speed gear 141 that form a harvesting transmission mechanism 139.
The gears 140 are provided between the gears 140 by means of a mowing gear shifting slider 142 for performing mowing gear shifts of low speed, neutral and high speed.
Selectively engage 141 with the vehicle speed tuning shaft 138 to perform mowing gear shifting. In addition, the one-way clutch 1 that transmits the vehicle speed tuning rotational force of the tuning input shaft 135 to each of the gears 140 and 141.
43 and each of the gears 140 and 141 to the tuning input shaft 135
A ball clutch type direct drive clutch 144 that is disengageably engaged with the vehicle is provided on the tuning input shaft 135, and the power from the vehicle speed tuning pulley 110 is transmitted to the vehicle speed tuning shaft 138 by the one-way clutch 143. 14
1, the tuning input shaft 135 and the vehicle speed tuning shaft 138 are directly rotated by the drive clutch 144.

Further, a pouring gear 146 and a high speed cutting gear 147 which form the constant rotation mechanism 145 are connected to the shaft 1
37, 138, and the gears 146, 147 are selectively engaged with the shafts 137, 138 by a switching slider 148 for pouring the drive or high-speed cutting of the cutting unit 7, and pouring the cutting unit 7. The culm of the reaper 7 is conveyed to the feed chain 5 side regardless of the running state, while the reaper 7 is cut at high speed to drive the reaper 7 at a constant rotation speed faster than the maximum speed of vehicle speed synchronization. And harvest the lodging culms.

The left side end of the constant rotation shaft 137 is projected to the lower rear side on the left side of the counter case 108, and the selection pulley 113 is pivotally supported on the left side end of the shaft 137. Further, the cutting input shaft 149 is pivotally supported on the lower front side on the left side of the counter case 108, and the right side of the shaft 149 is mounted on the vehicle speed tuning shaft 13.
8 is connected to the gear 150, and the reaping pulley 112 is attached to the left end of the shaft 149 that projects to the left of the counter case 108.
And the reaping input shaft 119 is connected to the reaping drive shaft 151 by the gear 152 so that the reaping drive shaft 151 pivotally supports the reaping input pulley 120. The fulcrum shaft 153 is attached to the left support base 116. A gear case 154 is rotatably provided around the vertical axis, and the left side of the reaping input shaft case 118 is detachably fixed to the gear case 154, and the gears 152 are internally provided in the respective cases 118 and 154. While the cutting power is input from the left end side and the cutting unit 7 is driven via the cutting transmission shaft 155 inserted in the cutting frame 12 on the right end side of the case 118,
The reaping unit 7 is rotationally moved about the fulcrum shaft 153 substantially horizontally to the left side of the machine body to perform maintenance and the like near the cases 22 and 108 inside the machine body.

Further, the feed chain input shaft 127 is rotatably supported on the upper left side of the counter case 108, and the input shaft 127 is connected to the chain 158 with the feed chain drive shaft 157 having the feed chain clutch 156. Rotate 137 to adjust the vehicle speed tuning shaft 138
A planetary gear mechanism 163 including a sun gear 160, a planetary gear 161, and a ring gear 162.
The mechanism 159 is configured to be continuously variable by means of the ring gear 16 which supports the sun gear 160 on the fixed rotary shaft 137 for engagement and supports the fixed rotary shaft 137 for free rotation.
2 is connected to the vehicle speed tuning shaft 138 by the gear 164,
A bearing body 165 that idles and supports the planetary gear 161 is idlely supported on the constant rotation shaft 137, and the feed chain drive shaft 15 is provided via the feed chain clutch 156.
7, the bearing body 165 is connected to the gear 166, and the minimum rotation required for the transportation of the grain can be ensured, and the feed chain 5 speed can be changed from low constant rotation to high rotation in synchronization with the vehicle speed. .

Further, the hydraulic harvesting shift cylinder 167 for operating the harvesting shift slider 142 and the direct drive clutch 1 are used.
Hydraulic direct drive cylinder 168 for turning on 44 and constant hydraulic rotation cylinder 169 for operating the switching slider 148.
And a hydraulic feed chain cylinder 170 for disengaging the feed chain clutch 156,
It is fixed to the upper surface and the front surface of 8.

Further, as shown in FIG. 14, the working lever 1
Threshing switch 172 that detects the threshing operation of 71, and mowing switch 173 that detects the mowing operation of work lever 171.
A mowing gearshift switch 174 for switching the mowing gearshift slider 142 between low speed and high speed, a high speed operation switch 175 and a reverse switch 176 for detecting a high speed forward / reverse switching of the main gearshift lever 75, and an operator's pouring pedal 17
Manual pouring switch 178 which detects the stepping operation of 7
And a sub shift switch 17 for switching between low speed and high speed sub shifts.
9, an automatic lift switch 180 that automatically raises and lowers the reaping unit 7, and an automatic set switch 181 that automatically turns the discharge auger 17 are connected to a work controller 182 configured by a microcomputer.

Further, a direct drive switch 183 for manually switching to an operation for driving the reaping section 7 by a constant rotation output of the engine 21, an automatic switch 184 for turning on / off the manual input of the switch 183, and the left and right traveling crawlers 2 are provided. Left and right vehicle speed sensors 185 and 186 for detecting speed (vehicle speed)
And the grain culm sensor 1 for detecting the presence or absence of the transported grain culm of the reaper 7.
87, a mowing input sensor 188 for detecting the input speed of the tuning input shaft 135 for inputting a vehicle speed tuning driving force to the mowing unit 7 via the low speed gear 140, and a mowing gear change cylinder 167.
Low speed and high speed solenoids 189 and 190 for switching the speed to low speed or high speed, and the feed chain clutch 15
Feed chain clutch cylinder 1 so that 6 is turned off
A feed chain solenoid 191 for operating 70,
The constant rotation cylinder 169 causes the switching slider 148 to engage the flow gear 146 with a flow solenoid 192, the constant rotation cylinder 169 causes the switching slider 148 to engage the high speed cut gear 147 with a high speed cut solenoid 193, and the direct drive cylinder 168 directly. A direct drive solenoid 194 that is operated to enter the drive clutch 144 is connected to the work controller 182, and
As shown in the flowchart of FIG. 5, the mowing unit 7 is operated at the pouring speed, the high speed cutting speed, or the vehicle speed synchronizing speed, and the constant torque is applied from the counter case 108 to the motor shaft 31 of the traveling motor 24 of the hydraulic traveling transmission member 25. The traveling crawler 2 is directly driven at a rotation speed higher than the output of the motor 24.

Further, the high speed operation solenoid 1 for turning on the bypass clutch 60 when the high speed operation switch 175 is turned on while the automatic switch 184 is turned on.
95, an auxiliary shift solenoid 196 that operates the auxiliary shift cylinder 101 by switching the auxiliary shift switch 179 to output the traveling motor 24 at a low speed or a high speed, and the threshing clutch 134 by turning on the threshing switch 172.
The threshing clutch solenoid 197 for turning on the switch, the cutting and raising cylinder 198 for raising or lowering the raising and lowering cylinder 11 by turning on the automatic lift switch 180, and the grain for discharging the auger 17 by turning on the automatic set switch 181. A discharge motor 199 that moves to the discharge position or the machine storage position is connected to the work controller 182.

Further, as shown in the flow chart of FIG. 15, the threshing switch 172 is operated by operating the work lever 171.
Is turned on, the feed chain solenoid 191 is turned off, the feed chain clutch 156 is turned on, the drive of the feed chain 5 is started, and the threshing clutch solenoid 197 is operated to turn on the threshing clutch 134.
The threshing unit 4 and the feed chain 5 are driven.

When the reaping switch 173 is turned on by operating the work lever 171, the vehicle speed tuning pulley 110
The main shift driving force is transmitted to the reaper 7 via the. At this time, when the pouring operation of the pouring pedal 177 is performed and the pouring switch 178 is turned on, the cutting input sensor 1
When the input rotation speed of the mowing unit 7 detected by 88 is less than or equal to the setting, the mowing gear shifting slider 142 is moved to a neutral position to neutralize the mowing gear shifting output of the mowing gear shifting mechanism 139, and the flow solenoid 192 is operated to operate the flow gear. 146
The reaper 7 is driven at a constant speed via. On the other hand, when the pouring switch 178 is turned on and the input rotation speed of the mowing unit 7 is equal to or higher than the setting, the mowing gear shifting output of the mowing gear shifting mechanism 139 is made neutral, and the operation of the high speed cutting solenoid 193 causes the high speed cutting gear 147 to operate. The reaper 7 is driven at a constant speed.

Further, when the auto-lift switch 180 is turned on while the pouring switch 178 is off, the mowing speed change output of the mowing speed change mechanism 139 is set to neutral, and when the ground height of the mowing section 7 is less than or equal to the set value, it is moved up and down. Cylinder 11
To automatically raise the reaper 7 to the set height,
Further, when the feed chain clutch 156 is disengaged and the ground height of the mowing unit 7 is equal to or higher than the setting, the lifting cylinder 11
By control, the mowing unit 7 is automatically lowered to the mowing work height, and the feed chain clutch 156 is turned on.

When the automatic lift 180 is off,
When the reverse switch 176 is turned on, the harvesting transmission mechanism 13
The harvesting variable speed output of 9 is made neutral, and each of the solenoids 19 described above is
2.193 is turned off and the switching slider 148 is made neutral.

Further, when the reverse switch 176 is off, the axle 4 detected by the vehicle speed sensors 185 and 186.
When 0 is stopped, the mowing transmission mechanism 139 is set to neutral and the vehicle speed synchronizing drive of the mowing unit 7 is stopped. On the other hand, the axle 40
Is driven, the cutting unit 7 detected by the cutting input sensor 188 when the auxiliary shift output of the shift motor 24 is at a low speed.
High speed cut solenoid 1 when the input rotation of
93 is operated to set the mowing transmission mechanism 139 to the neutral position, and the mowing unit 7 is driven at a constant speed through the high-speed cutting gear 147 to perform a high-speed cutting operation.

Further, when the auxiliary shift output of the shift motor 24 is low, when the input rotation of the reaper 7 is below the set value, when the automatic switch 184 is on, the high speed operation switch 17
5 is turned on, with the input rotation of the mowing unit 7 being equal to or higher than the setting, the mowing unit 7 is rotated at a constant speed through the high-speed cutting gear 147 to perform a high-speed cutting operation, and the high-speed operation solenoid is operated. 195 is operated and the bypass clutch 60 is turned on, without passing through the traveling speed change member 25,
The driving force of the engine 21 is directly transmitted from the bypass clutch 60 to the subtransmission mechanism 32 to operate at high speed.

Further, when the high speed operation switch 175 is off, the operation of the mowing gear change switch 174 switches the mowing gear change output of the mowing gear change mechanism 139 to low speed or high speed, and the vehicle speed tuning input is made via one of the gears 140 and 141. The cutting unit 7 is driven at a low speed or a high speed to cut the standing grain culm at a low speed or the lying grain culm at a high speed.

Further, as shown in FIGS. 16 to 28, the step 200 is fixed to the bottom of the cabin 18, the steering case 63 is erected at the center of the front part of the step 200, and the side column 201 is provided on the left side of the step 200. At the same time, the left and right horizontal frames 202 are fixed to both upper sides of the steering case 63, and the front panel 203 is detachably fixed to the horizontal frame 202. A pair of left and right switch panels 204 is attached to the front panel 203, and the left and right switch panels 2 are centered around the handle 19.
A square automatic horizontal switch 205 for turning on / off automatic horizontal control for placing the vehicle 04 in a symmetrical position and for horizontally turning the machine horizontally, a round setting device 206 for adjusting the left / right inclination reference of the machine, and for turning on / off the high-speed operation. Square automatic switch 184, a round setting device 207 for adjusting the cutting height of the mowing unit 7, and the mowing unit 7
Rectangle automatic cutting height switch 2 to turn ON / OFF the automatic cutting height control
No. 08 is provided on the left switch panel 204, a square work light switch 209 for turning on and off the work light, a round-shaped selection switch 210 for switching the selection operation of the threshing unit 4 according to the type of grain, and a grain culm of the threshing unit 4 are provided. Quadrangle automatic depth control switch 211 for turning on / off the automatic depth control of the engine, a circular setting device 212 for adjusting the accelerator of the engine 211, and a quadrangle automatic governor switch for turning on / off the electronic governor control for constant rotation of the engine 211. 213 is provided on the right switch panel 204.

Further, the harvesting work display meter panel 214 is arranged in the center of the handle 19, and the four-way operation type manual switch 215 for manually operating the horizontal control and the height control in the left-right direction of the machine body and the reaping section 7 are also provided. A four-way operation type manual switch 216 for manually operating both the raising and lowering of the handle and the handling depth of the threshing unit 4 is provided on the left and right sides of the handle 19,
Between the coil and the front panel 203
7 and each switch 215 is connected via the cable 217.
・ Electrically connect 216 to this unit. The automatic switch 184 may be provided on the meter panel 214. As described above, the switches 184, 205, and 213 are provided separately on the left and right switch panels 204 of the same shape to improve the operability, and the round and square switches 184-2 are provided.
The switch panels 204 are shared by the left and right sides, and the switch panels 204 are commonly used.
The front view of the operator is not obstructed by No. 4, and a space for inserting the operator's foot is formed below the switch panel 204, while the cable 217 is formed of a curl cord to eliminate the need for a long harness.

Further, the side columns 201 are provided with pipe-shaped front and rear columns 218, 219 to be erected, and a horizontal upper frame 220 for fixing the left side of the left horizontal frame 202 and the upper portions of the columns 218, 219 in the forward direction. The side panel 221 is attached to the upper surface frame 220, the front side of the side panel 221 is connected to the rear side of the left side L-shaped portion in a plan view of the front panel 203, and the crank-shaped guide groove 222 of the main speed change lever 75 and the auxiliary speed change lever. 99 linear guide groove 223 and L-shaped guide groove 2 of the work lever 171.
24 is formed on the side panel 221, and each lever 75.
99.171 is made to project above the side panel 221.
The base portion of the main shift lever 75 is swingably attached to the bearing 225 in the left-right direction, the bearing 225 is fixed to the switch cam 226, the switch cam 226 is pivotally supported by the front support column 218 via the support shaft 227, and the main shift is performed. The lever 75 is swingably attached to the left and right and the front and rear, and the main speed change lever 75 is moved to the outer side (left side) obliquely forward of the driver's seat 20 to perform forward acceleration, and the left hand of the operator is moved forward. The operability is improved compared to a simple operation of moving the body toward the outside of the body and linearly moving back and forth, and the grip 228 of the lever 75 is moved to the diagonally front left side so that the front view on the left front side is not obstructed. . The reverse side of the lever 75 may also be moved to the outside (left side).

Further, as shown in FIG. 26, the main transmission lever 75
The grip 228 of the operator is to be gripped by the left hand of the worker, and a hand rest 229 for placing the palm of the left hand on the opposite side to the thumb of the left hand is provided at the base of the grip 228, and the protrusion 230 for catching the index finger, the middle finger, the ring finger or the little finger of the left hand is grip 2
28 is provided on the back side, and the weight of the left hand is supported by the hand rest 229 to reduce fatigue, and the operation of returning the lever 75 to the neutral position by hooking the finger of the left hand on the protrusion 230 or the operation in the reverse direction can be easily performed. A change-type mowing gearshift switch 174, an auto-return / auto-set switch 181, an auxiliary gearshift switch 179, and a seesaw-changing type elevating switch 231 for manually elevating the mowing unit 7.
And a seesaw switching type handling depth switch 232 for manually adjusting the handling depth of the threshing unit 4 are provided on the upper surface side of the grip 228, and each switch 1 is operated so that the thumb of the left hand is mainly operated.
74, 179, 181, 231, 232 are arranged, and the switches 174, 231, 232 are arranged obliquely so that the operation direction is in a locus drawing an arc with the base of the thumb as a fulcrum.
Slide each switch without releasing your thumb.
32 switchable, each switch 174 ・ 231 ・ 2
The seesaw fulcrum in the center of 32 is lowered to make it easier for the thumb to be caught, and the elevating switch 231 is switched in two steps to further push in from a slow speed to switch to a higher speed to raise and lower the grip 228 and switches 174, 179 and 181.
-The arrangement of 231, 232 is mainly formed by the thumb operation to improve the operability.

Further, as shown in FIGS. 21 to 25, a cylindrical bearing 233 is provided on the lower surface side of the step 200, a gear shift fulcrum shaft 234 is rotatably supported by the bearing 233, and a main shaft is provided on the right side of the fulcrum shaft 234. The shift arm 235 is connected to the main shift link 74 by a rod 236. On the other hand, a cam groove 237 for returning the main speed change lever 75 to the neutral position is formed in the parking cam plate 238, and the cam plate 238 is fixed to the fulcrum shaft 234.
Fixed to the left side of the switch cam 226 and the cam plate 2
38 is connected to the rod 239, and the main speed change lever 75 is connected to the main speed change link 74. Also, the side column 201
Rotatably support the pedal shaft 240, and
A parking pedal 241 for acting as a main clutch pedal is fixed to the right side of the pedal shaft 240 on the upper surface of the floor roller 242 so as to be movable in the cam groove 237.
The floor roller 242 and the pedal arm 243.
When the pedal arm 243 is fixed to the left side of the pedal shaft 240 and the pedal 241 is stepped on, the roller 242 engages with the neutral notch 244 of the cam groove 237, and the main speed change lever 75 and the main speed change link 74 are moved. The neutral switch 245 for supporting the neutral position of the main gear shift is turned on, and the brake wire 247 is connected to the brake arm 246 fixed to the pedal shaft 240. The brake wire 247 is connected by the neutral manipulation of the main gear shift. The parking brake 46 is operated via the to brake the traveling crawler 2.

Further, when the left foot is released from the pedal 241, the pedal 241 is returned upward by the return spring 248, while the hook 249 is rotatably supported on the left side of the main transmission shaft 73, and the hook 249 is locked by the lock lever 250.
The lock lever 250 is erected and supported by the spring 251. The hook 249 is detachably engaged with the pedal 241 at the stepping position to support the pedal 241 in the parking brake 46 braking state.

Further, a cabin fulcrum shaft 252 is provided on the lower surface of the step 200, and the cabin fulcrum shaft 252 is arranged close to the main gear shift fulcrum shaft 234.
The cabin 18 is attached to the cabin front frame 253 of the machine base 3 so as to be rotatable back and forth around 52, and maintenance of the lower surface side of step 200 is performed automatically by opening the cabin 18 forward. Rod 236
・ The movement of 259 is reduced and the rear support 21
9, a sub-transmission lever 99 base is rotatably provided via a lever shaft 254, a switch cam 255 is fixed to the lever 99 base, and a switch 256 for detecting the switching of the lever 99.
Is turned on and off by a cam 255, and a sub-transmission arm 257 is rotatably supported on the left side of the bearing 233 so that the arm 257 is connected to the switch cam 255 by a rod 258, while the sub-transmission mechanism 32 switches the sub-transmission. The auxiliary transmission arm 257 is connected to the rod 259 to the slider, and the rotation of the output shaft 31 is rotated by the operation of the auxiliary transmission lever 99 via the low speed gear 42 or the high speed gear 43.
3 is transmitted.

Further, the arm portion of the parking pedal 241 is extended in an L shape in plan view along the outer circumference of the step 200 inside the front panel 203 and the side panel 221, and the foot step portion of the pedal is arranged at the position of the conventional main clutch pedal. Then, the arm portion of the pedal 241 is detoured and extended around the footrest 260 provided on the upper surface of the step 200 on the rear side of the pedal 241, so that the length of the arm portion of the pedal 241 is secured to reduce the operation force. The upper surface is effectively used, and the hook 24 is also used as the main transmission shaft 73.
9 and the lock lever 250 are mounted, the main shift lever 75 is provided with a parking position, and the pedal 241 is depressed to set the lever 75 to the parking position and the parking brake 46
While braking and supporting the
9 is released by the return of the spring 251, and the parking is released,
Further, even if the lever 75 is in any shift position, the pedal 2
Only by stepping on 41, the vehicle returns to the parking position and the operability of the main transmission lever 75 and the parking brake 46 is improved.

Further, a limit switch type high speed operation switch 175 is arranged near the support shaft 227 which is the fulcrum of the main speed change lever 75, and the switch 175 is turned on in the vicinity (front side) of the highest speed by the cam 226 of the lever 75 fulcrum. In addition, the bypass clutch 60 is engaged just before the highest speed to perform a high-speed operation operation that outputs a constant high-speed rotation, and the operating position of the switch 175 can be easily adjusted as compared with the push switch type, and the grip is improved. The contact portions of the thumbs of the switches 174, 179, 181, 231, 232 of 228 are made of a conductive material, and the conductive material is provided on the thumb portion of the glove worn on the left hand, and each switch 174 is contacted by the conductive material.
179, 181, 231, 232 can be turned on / off or switched, and the fulcrum shaft 2 serving as the fulcrum of the main and auxiliary gear shifts
34 is provided near the cabin fulcrum shaft 252 and the rod 23
In addition to eliminating the problem that the main and auxiliary transmission mechanisms such as 6 and 259 perform a switching operation due to the open rotation of the cabin 18, the main transmission cam plate 238 and the auxiliary transmission arm 257 are arranged on the same fulcrum shaft 234, so that the transmission structure is changed. Make it compact.

As is clear from the above, in the combine provided with the main transmission lever 75 for changing the traveling speed,
A parking position is provided in the neutral operation portion of the main shift lever 75, and the parking brake 46, which is a parking brake, is turned on by returning the main shift lever 75 to the neutral position. Can handle.

Further, the forward side operation of the main speed change lever 75 arranged on the left front side of the driver's seat 20 is performed by moving the main speed change lever 75 forward toward the oblique left side so that the left arm of the worker is moved forward. By moving the main shift lever 75 toward the outside of the body, the main shift lever 75 is easily operated on the forward side, and the grip 228 of the main shift lever 75 is moved to the outside of the operator's field of view.

Further, the grip 228 of the main transmission lever 75
A hand rest 229 is provided on the grip, and the hand rest 229 of the grip 228 supports the left hand to reduce the fatigue of the left wrist.

A switch 174 mainly for thumb operation.
・ 179 ・ 181 ・ 231 ・ 232 is the main transmission lever 75
Provided on the switch 174/179/181/231/2
By operating 32 with the thumb, the main transmission lever 75
Release the grip 228 and switch 1 with your index finger
It is not necessary to operate the 74, 179, 181, 231, 232, and the main speed change lever 75 can be returned to the neutral side with four fingers other than the thumb, or the main speed change lever 75 can be moved at the base of the thumb.
Press to the high speed side and switch 174/179/181/2
31 ・ 232 Operability and forward gear shifting operability are improved.

Further, a parking pedal 241 for stepping is provided for supporting the speed change lever 75 at the parking position,
By depressing the pedal 241, the main transmission lever 75
To the neutral position, and the parking brake 46 is turned on.
Even if the foot slips away from 41, troubles such as sudden start and engine 21 stop are eliminated, and the conventional main clutch is omitted.

Further, a lock lever 250 which is a locking tool for supporting the pedal 241 at the depressed position is provided, and the gear shift lever 75 is neutrally locked by the lock lever 250 via the pedal 241 to prevent erroneous operation of the main gear shift lever 75. To prevent.

Further, the grip 228 of the main transmission lever 75
An automatic set switch 181, which is an automatic discharge switch provided in the, an auger operation case 283 of the cabin 18,
The operation switch 297 on the tip side of the discharge auger 17 is operated to discharge the grain of the discharge auger 17, and the grip 228 of the speed change lever 75 is held to move the discharge auger 17 to the grain discharge position or the storage position on the machine side. A moving operation is performed to smoothly perform the operation of shifting from the harvesting operation to the grain discharging operation or returning from the grain discharging operation to the harvesting operation.

Further, the grip 228 of the main transmission lever 75
A sub-shift switch 179 is provided on the main shift lever 75
The traveling speed is changed by the auxiliary transmission lever 99 and the auxiliary transmission switch 179, and the output of the traveling motor 24 and the auxiliary transmission mechanism 32, which are different auxiliary transmission means, are switched by the auxiliary transmission switch 179 and the auxiliary transmission lever 99. This simplifies the auxiliary transmission mechanism 32 of the mission case 22 and increases the number of auxiliary transmission stages.

Further, the main transmission lever 75 and the steering handle 1
9 is provided in the transmission case 22, and the input shaft 30 of the transmission case 22 for transmitting power from the front side of the engine 21 to the traveling speed change member 25 and the output side of the traveling speed change member 25 are connected to the transmission case 22. The bypass clutch 60 is connected internally, and the bypass clutch 60 is turned on by the operation of the main transmission lever 75 near the maximum speed to improve the spin turn traveling performance in a wetland where the traveling load is large.

Further, the power output from the rear side of the engine 21 and the output of the traveling speed change member 25 are input to the counter case 108, respectively, and the threshing drive force, the threshing selection drive force, the feed chain 5 drive force, and the cutting drive force are Counter case 1
08, respectively, to output each, to distribute the driving force to each part of the threshing section 4 and the reaping section 7 via the counter case 108,
The output is properly controlled based on the input speed from the engine 21.

Further, as shown in FIGS. 27 and 28, a mowing detent board 261 is fixed to the rear side of the upper frame 220, and a fulcrum shaft 262 of the working lever 171 in the front-rear direction.
Is provided on the detent board 261, a cutting detent cam plate 263 for turning on and off the cutting switch 173 is rotatably supported on the shaft 262, and a detent ball 264 for positioning the cam plate 263 is provided on the detent board 261. The harvesting switch 173 is turned on and off by 263, and the threshing detent board 26 is attached to the harvesting detent cam plate 263.
5, the work lever 171 is rotatably attached to the base plate 265 via the cylindrical bearing 266 in the left-right direction, and the threshing detent cam 267 and the switch plate 268 are fixed to the lever 171 base so as to sandwich the bearing 266. A threshing switch 1 in which a detent ball 269 for positioning is provided on a substrate 265 and is turned on and off by a switch plate 268.
72 is fixed to the board 265, the detent ball 269 for the threshing clutch 134 and the switch 172 are provided on the detent board 265 which is one bracket, and the detent cam 2 is provided.
67 is welded to the lever 171 to reduce the number of constituent parts, while the cutting clutch is engaged and disengaged by the detent ball 264, compared to the conventional return spring structure.
The stroke of 3 is reduced to make it compact.

As is apparent from the above, in the combine in which the steering handle 19 is provided in front of the driver's seat 20 and the main transmission lever 75 and the working lever 171 are provided on the left side of the driver's seat 20, the steering is performed in front of the driver's seat 20. The switch panel 204 is provided in the handle 19 arrangement portion, and the switch panel 2 is provided in comparison with the conventional switch panel arranged on the left side of the driver's seat.
The left side space of the driver's seat 20 is widened by the installation space of 04, the driver's seat 20 and the steering handle 19 are arranged on a substantially straight line in the front-rear direction, and the switch panel 204 is visually checked.

Further, a center panel 214 is provided at the center of the steering handle 19 and left and right switch panels 204 are provided on both sides of the steering handle 19 to display, for example, the harvesting work status, or for cutting and threshing of culms. It is possible to visually confirm the automatic switch 184 that requires switching of the drive output to the traveling crawler 2 by arranging the switches and the display section separately for adjustment or general adjustment of the driving operation, and cutting and traveling and headland turning. Place it in an easy position and use the automatic switch 184
Reduces forgetting to insert or forgetting to cut.

Further, the detent ball 269, which is a positioning body of the work lever 171, and the threshing switch 172, which is a work switch, are the same support as the threshing detent board 26.
5, the number of parts of the work lever 171 mounting structure is reduced, and the support of the work lever 171 at the switching position and the detection of the switching position are properly performed.

Further, a high-speed operation switch 175 which is operated by operating the main speed change lever 75 near the highest speed is provided. For example, when turning the headland of a wetland, the high speed operation switch 175 is operated just before the highest speed operation. 175 is turned on, and the output of the engine 21 is switched to the operation of directly driving the traveling crawler 2 to eliminate the lack of horsepower due to the transmission loss of the traveling transmission member 75.

When the high-speed operation switch 175 is turned on, the drive speed of the reaper 7 is set to neutral, and the shortage of horsepower due to the transmission loss of the traveling speed change member 25 is eliminated.
The driving load of the mowing unit 7 is eliminated, and the output of the engine 21 is effectively used for driving the traveling crawler 2 to perform headland turning that requires large horsepower.

When the threshing section 4 is being driven, the reaper section 7 is driven by the work lever 171 to drive the reaper section 7 at a lower reaping speed, and the reaper section 7 is driven. 7 is started at a low speed to prevent a sudden increase in work load and to start the harvesting work smoothly.

Further, the input shaft 30 of the mission case 22
The bypass clutch 60 that short-circuits the auxiliary transmission mechanism 32 is provided, and the switch panel 204 is provided with the automatic switch 184 that is an automatic traveling switch that automatically turns on the bypass clutch 60 based on the high-speed operation switch 175. The automatic control of the bypass clutch 60 is turned on / off by the automatic switch 184 of the switch panel 204 to appropriately perform high horsepower running near the maximum speed, and to improve running performance and operability.

A counter case 108 for inputting power output from the rear side of the engine 21 and main shift output of the transmission case 22 respectively, a threshing clutch 134 which is opened and closed by a working lever 171, and a reaping shift slider 142 which is a reaping clutch. The cutting gear shifting mechanism 139, the feed chain clutch 156, and the switching slider 148 that is a compulsory drive clutch of the mowing unit 7 are provided, and each part of the threshing unit 4 and the mowing unit 7 are in the mowing culm state or mowing traveling, or It is driven according to the work situation such as headland turning to improve the operation performance of the threshing unit 4 and the reaping unit 7 and the operability.

Further, the main shift lever 75 and the steering handle 1
9, a traveling speed change member 25 controlled by 9 and a speed change lever 75
A turning member 28 controlled by the steering handle 19 is provided in the mission case 22 to keep the turning radius substantially constant irrespective of the traveling speed change of the main speed change lever 75, and in proportion to the turning radius of the steering handle 19. The running speed will be reduced to improve running performance and driving operability.

A deceleration operation of the traveling speed change member 25 is performed by the turning operation of the steering handle 19, while a bypass clutch 64 for short-circuiting the sub-transmission mechanism 32 on the lower side of the travel speed change member 25 and the output shaft 29 on the front side of the engine 21 is provided. Provided,
By reducing the spin turn required for large horsepower in the field headland to an appropriate speed, the traveling crawler 2 is driven by utilizing the high horsepower output of the engine 21, and the traveling performance of the wetland is improved.

Further, as shown in FIGS. 29 to 37, the right support base 117 and the left side of the cabin front frame 253 are connected to each other through the horizontal frame 270 that obliquely passes above the mission case 22, and the engine room cover. A cabin strut 271 is erected on the machine base 3 outside the 102, and both ends of a cabin frame 272 passing above the cover 102 in the left-right direction are connected to a right support stand 117 and an upper side of the cabin strut 271 to form a rear portion of the cabin 18. The left and right cabin bases 273 on which the vehicle is mounted are fixed to the cabin frame 272, the middle of the left cabin base 273 and the horizontal frame 270 are connected by an inclined frame 274, and each frame 253 is formed so as to straddle the mission case 22 and the engine room cover 102. 270/272 on the right support 11
Engine 2 connected to 7 and arranged in a straight line in the front-back direction
1 and each frame 253 above the mission case 22
270 and 272 are erected, and the cabin 18 that is rotated around the fulcrum shaft 252 is opened in each frame 253.
・ Supported by 272.

A condenser 275 for the cooling and cooling of the cabin 18 is provided on the rear surface of the cabin 18, and the air-permeable mesh plate 2 is provided on the right side surface of the cabin 18 facing the condenser 275.
76 is detachably installed to improve maintainability.
In addition, the engine 2 is placed on the upper surface of the engine room cover 102.
1 Fix the air cleaner 277 for air supply to the cabin 1
8, the air supply pipe 278 is fixed to the rear surface, the pre-cleaner 279 is fixed to the upper side of the air supply pipe 278, the receiving port 281 is fixed to the air supply port 280 of the air cleaner 277, and the bellows type expandable connecting pipe 282 is fixed. It is fixed to the lower side of the air supply pipe 278, and the lower side of the connecting pipe 282 is elastically joined to the receiving port 281 by elastic pressure so that the receiving port 281 and the connecting pipe 282 are separated from each other when the cabin 18 is opened. With the air cleaner 277 left on the cover 102 side, the air supply pipe 278 and the precleaner 279 are integrally rotated with the cabin 18, and the cabin 18 is opened and rotated without detaching the precleaner 279 or the like.

Further, the center of the steering handle 19 inside the cabin 18 and the center of the driver's seat 20 are arranged on a straight line in the front-rear direction to ensure a sufficient gap between the left side of the driver's seat 20 and the side panel 221 for operation. And a comfortable habitability are improved, and a detachable auger operation case 283 is attached to a side surface near the driver's seat 20 inside the cabin 18, and an operator getting on and off through the door 284 on the right side of the cabin 18 holds the case 283. In the combine equipped with the cabin 18 in which the driver's seat 20 is installed, the parking cam plate 238 and the sub-transmission arm 257, which are the shift operation mechanism for changing the traveling speed, are configured to be operable in the cabin 18. The gear shift fulcrum shaft 234 is arranged near the cabin fulcrum shaft 252 which is the pivot fulcrum shaft of the cabin 18, and the parking cam The cabin 18 is opened operations without disassembling the sub transmission arm 257 and 238, to open and close operation of the cabin 18 due to maintenance work.

Further, the parking cam plate 238 and the sub-transmission arm 257, which are the operation mechanisms for the main shift and the sub-shift, are provided on the same shift fulcrum shaft 234, and the cam plate 238 for each operation for the main shift and the sub-shift is provided. The arm 257 is connected to the shift fulcrum shaft 2
34 is used for compact placement.

Further, the air cleaner 277 for supplying air to the engine 21 is provided on the machine side, and the pre-cleaner 279 connected to the air cleaner 277 is provided on the cabin 18 side, so that it is not necessary to attach or detach the pre-cleaner 279 when opening or closing the cabin 18. By installing a separable pipe in the middle of the connection between the precleaner 279 and the air cleaner 277, the mounting structure of the precleaner 279 and the air cleaner 277 can be simplified.

Further, the grain tank 15 which is a Glen tank
An auger operation case 283 for operating the discharge auger 17 for discharging the grain from the inside is provided movably inside and outside the cabin 18, and the auger operation case 283 is provided at a position where an operator can easily operate.
Is carried out to carry out the grain discharge work, and for example, the discharge operation is carried out in consideration of the grain discharge situation of the truck bed or the container.

Further, a steering case 63 provided with the steering handle 19 is provided inside the cabin 18, and a speed change lever 75 is connected to the main body side via a speed change mechanism 89 in the steering case 63, in proportion to the turning radius. A function is added to slow down the traveling speed or keep the turning radius constant when the traveling speed is changed.

Further, the speed change mechanism 89 of the steering case 63 and the steering mechanism 83, which is a turning mechanism, are connected to the traveling speed change member 25 and the turning member 28 of the mission case 22, and the steering inside the cabin 18 is performed via the steering case 63. The handle 19 and the speed change lever 75 are attached to the mission case 22.
The swing operation structure and the gear shift operation structure are simply configured.

A counter for allowing the reaping section 7 to be installed on the left side of the cabin 18 and for inputting power from both the output shaft 29 on the rear side of the engine 21 and the traveling motor output shaft 31 which is the reaping drive shaft of the mission case 22. Case 108
The reaping input pulley 120 on the left side of the reaper 7 is provided with reaping power from the counter case 108, and it is not necessary to secure the installation space for the reaping input pulley 120 on the right side of the reaper 7 Engine 21 installed in
Alternatively, the mission case 22 is arranged near the center of the machine body.

The reaping input pulley 120 and the reaper 7
An open fulcrum shaft 153 for laterally moving is provided on the left side of the machine body opposite to the engine 21 across the counter case 108, and the reaping input pulley 120 is provided on the open fulcrum shaft 15
It is provided below the feed chain 5 on the outer side of the fuselage 3 and when the side cutting operation of the cutting unit 7 is performed, the cutting input pulley 120
The V-belt 121 is removed and attached.

Further, between the reaping frame 12 extending from the reaping input case 118, which is an elevation fulcrum shaft for supporting the reaper 7 so as to be able to move up and down, and the transmission case 22 between the traveling crawler 2 on the right side below the cabin 18. The right cutting support 117 is provided, and the input shaft 3 on the rear surface of the mission case 22 is provided.
The output shaft 29 on the front surface of the engine 21 is connected to 0, and for example, the large cutting unit 7 near the center is cut near the center of the cutting frame 1.
2, the heavy engine 21 and the transmission case 22 are arranged near the center of the machine body, and the reaper 7
Stabilize the support and the left-right balance of the aircraft.

Further, the middle of the cabin frame 272 for supporting the cabin 18 is installed above the engine room cover 102 which is the engine room in which the engine 21 is installed, and the machine base 3 on both sides of the engine room cover 102 and the right reaping support. Both ends of the cabin frame 272 are connected to the stand 117, and the right mowing support stand 117 is used as a part of the cabin frame 272 to reduce the distance between the right mowing support stand 117 and the engine 21 for weight reduction and The left and right widths are made compact.

Further, a handle 285 is provided on the upper surface of the auger operation case 283, and an expandable curl cord 286 for electrically connecting to the main body side is provided on the case 283 so as to be detachably adhered to the inner and outer surfaces of the cabin 18 to be supported. The magnet 287 is fixed to the back surface of the case 283, and the vertical and horizontal movement switches 288, 289, 290 for manually moving up and down the outlet of the discharge auger 17 at the tip thereof.
291, an automatic set switch 292 and an automatic return switch 293 for automatically moving the discharge auger 17 to the grain position and the storage position of the machine, and a dial for initially setting the grain discharge position for automatically moving the discharge auger 17 294, and a clutch switch 295 that turns on and off the auger clutch that transmits the power of the engine 21 to the discharge auger 17,
A seesaw switch type swing switch 296 that swings the outlet of the discharge auger 17 to change the outlet direction.
Is disposed on the front surface of the case 283. Then, the case 283 can be carried in and out of the cabin 18 which is easy to operate, and the operation can be performed while visually checking the discharge state of the grain, and all the operations related to the discharge auger 17 can be performed by the case 283, and the magnet 287 can be adhered. By fixing the case 283 to a desired place by using, the automatic control switches 292 and 293 are removed from the case 283, and the discharge auger 17 is automatically moved to the discharge position or the storage position by the auto set switch 181 of the main speed change lever 75. The case 283 can be made compact and lightweight, and the number of electric wires of the curl cord 286 can be reduced to achieve weight reduction and cost reduction.

[0094]

As is apparent from the embodiments described above, the present invention provides a steering wheel 19 in front of the driver's seat 20 and a shift lever 75 and a working lever 171 on the left side of the driver's seat 20 in a combine. A switch panel 204 is provided in the steering handle 19 arrangement part in front of 20, so that the left side space of the driver's seat 20 is wide by the installation space of the switch panel 204 as compared with the conventional switch panel arranged on the left side of the driver's seat. It can be formed, the driver's seat 20 and the steering handle 19 can be arranged on a substantially straight line in the front-rear direction, and can be installed on the left side, and the switch panel 204 can be easily visually confirmed.

Further, a center panel 214 is provided at the center of the steering handle 19 and left and right switch panels 204 are provided on both sides of the steering handle 19. For example, the display of the harvesting work status or the harvesting of grain stems and The switches and the display unit can be arranged separately for threshing adjustment or general adjustment of the driving operation, and the switch 184 that needs to be switched between mowing traveling and headland turning can be arranged at a position where visual confirmation is easy, It is possible to reduce forgetting to turn on or off the switch 184.

Further, the positioning body 26 for the working lever 171
9 and the work switch 172 are provided on the same support 265, the number of parts of the work lever 171 mounting structure can be reduced, and the work lever 171 can be properly supported and detected at the change position. It is possible.

Further, a high-speed operation switch 175 which is operated by operating the speed change lever 75 near the highest speed is provided. For example, when the headland of a wetland is swung, the high speed operation switch 175 is operated just before the highest speed operation. By turning on 175 and switching to the operation of directly driving the traveling crawler 2 by the output of the engine 21, the insufficient horsepower due to the transmission loss of the traveling transmission member 75 can be eliminated.

When the high-speed operation switch 175 is turned on, the drive speed of the mowing unit 7 is changed to neutral, so that the lack of horsepower due to the transmission loss of the traveling speed-changing member 25 can be eliminated. Drive load of the engine 21
It is possible to make effective use of the output of to make headland turns that require large horsepower.

When the threshing unit 4 is being driven, the reaper unit 7 is driven by the working lever 171 to drive the reaper unit 7 at a low reaping speed. When reaping and threshing work is started, The harvesting unit 7 can be started at a low speed to prevent a sudden increase in work load, and the harvesting work can be started smoothly.

Further, the input shaft 30 of the mission case 22
The bypass clutch 60 that short-circuits the auxiliary transmission mechanism 32 and the automatic transmission switch 184 that automatically turns on the bypass clutch 60 based on the high speed operation switch 175 is provided on the switch panel 204. The automatic control of 60 can be turned on / off by the automatic traveling switch 184 of the switch panel 204 to properly perform high horsepower traveling near the maximum speed, thereby improving traveling performance and operability. It is a thing.

Further, the threshing clutch 134 and the reaping clutch 142, which are turned on and off by the work lever 171, are inserted into and out of the counter case 108 for inputting the power output from the rear side of the engine 21 and the main shift output of the transmission case 22 respectively.
, Reaping speed change mechanism 139, and feed chain clutch 1
56 and the compulsory drive clutch 148 of the reaping unit 7, the respective parts of the threshing unit 4 and the reaping unit 7 are set to the state of the reaped culm,
Alternatively, it can be driven according to a work situation such as mowing traveling or headland turning, so that the operation performance of the threshing unit 4 and the mowing unit 7 and the operability can be improved.

Further, the speed change lever 75 and the steering handle 19
The transmission gear member 25 controlled by the gear shift lever 75 and the turning member 28 controlled by the gear shift lever 75 and the steering handle 19 are provided in the mission case 22 to keep the turning radius substantially constant regardless of the gear shift of the gear shift lever 75. In addition, the traveling speed is reduced in proportion to the turning radius of the steering handle 19 to improve traveling performance and driving operability.

A deceleration operation of the traveling speed change member 25 is performed by the turning operation of the steering handle 19, while a bypass clutch 64 for short-circuiting the auxiliary transmission mechanism 32 on the lower side of the travel speed change member 25 and the output shaft 29 on the front side of the engine 21 is provided. The spin turn that requires large horsepower on the farm headland is provided.
When the speed is reduced to an appropriate speed, the traveling crawler 2 can be driven by utilizing the high horsepower output of the engine 21, and the traveling performance of the wetland can be improved.

[Brief description of drawings]

FIG. 1 is an overall perspective view.

FIG. 2 is a right side view of the same.

FIG. 3 is a schematic plan view.

FIG. 4 is an explanatory diagram of a mission case drive.

FIG. 5 is an explanatory diagram of traveling speed change and steering operation.

FIG. 6 is a sectional side view of a steering case.

FIG. 7 is a front view of the same section.

FIG. 8 is an explanatory diagram of travel speed change and steering drive.

FIG. 9 is a left side view of an engine and a counter case portion.

FIG. 10 is a plan view of the same.

FIG. 11 is a front view of the same.

FIG. 12 is an explanatory view of the same transmission.

FIG. 13 is a transmission explanatory view of a counter case.

FIG. 14 is a control circuit diagram of harvesting work.

FIG. 15 is a control flowchart of the same.

FIG. 16 is a side view of the step portion of the cabin.

FIG. 17 is a front view of the same.

FIG. 18 is a plan view of the same.

FIG. 19 is an enlarged plan view of the same.

FIG. 20 is an enlarged plan view of the same.

FIG. 21 is an enlarged side view of the same.

FIG. 22 is a side view of the shift lever portion.

FIG. 23 is an enlarged side view of the same.

FIG. 24 is a front view of the same.

FIG. 25 is an enlarged front view of the same.

FIG. 26 is a plan view of the grip of the main shift lever.

FIG. 27 is a side view of the work lever portion.

FIG. 28 is an exploded view of the same.

FIG. 29 is a left side view of the cabin portion.

FIG. 30 is a right side view of the same.

FIG. 31 is a front view of the same.

FIG. 32 is an enlarged right side view of the same.

FIG. 33 is a left side view of the portion.

FIG. 34 is a left side view of the cabin frame portion.

FIG. 35 is a front view of the same.

FIG. 36 is a plan view of the same.

FIG. 37 is a perspective view of an auger operation case.

[Explanation of symbols]

4 Threshing Department 7 reaper 19 Steering handle 20 driver's seat 21 engine 22 mission case 25 Travel speed change member 28 Swivel member 29 Engine output shaft 30 mission case input shaft 32 Sub transmission mechanism 60 bypass clutch 75 Main shift lever 108 counter case 134 Threshing clutch 139 Mowing gear mechanism 142 Mowing shift slider (mowing clutch) 148 Switching slider (forced drive clutch) 156 Feed Chain Clutch 171 Working lever 172 Threshing switch (working switch) 175 High-speed operation switch 184 Automatic switch (Automatic traveling switch) 204 switch panel 214 Center panel 265 Threshing detent board (support) 269 Detent Ball (Positioning Pair)

─────────────────────────────────────────────────── ─── Continuation of front page (51) Int.Cl. ⁷ Identification code FI theme code (reference) A01D 69/00 303 A01D 69/00 303A 303G 303Z 69/03 69/03 69/08 69/08 Z (72) ) Inventor Tomohiro Koyama 1-32, Chaya-cho, Kita-ku, Osaka F-term in Yanmar Agricultural Machinery Co., Ltd. (reference) 2B043 AA03 AB08 BA05 BB14 DA05 DB18 EA02 ED12 ED22 2B076 AA03 BA06 BA07 CC02 CD03 DA02 DA03 DA05 DA09 DA15 DC01 DC03 DD01 DD02 EB01 EB03 EC09 EC11 EC17 EC18 EC19 ED01 ED06 ED16 ED18 ED19 ED20 ED27

Claims (10)

[Claims] 1. In a combine in which a steering handle is provided in front of the driver's seat and a shift lever and a work lever are provided on the left side of the driver's seat, a switch panel is provided in the steering handle arrangement in front of the driver's seat. To combine. 2. The combine harvester according to claim 1, wherein a center panel is provided at a central portion of the steering handle, and left and right switch panels are provided on both sides of the steering handle. 3. The combiner according to claim 1, wherein the work lever positioning body and the work switch are provided on the same support. 4. The combine harvester according to claim 1, further comprising a high-speed operation switch which is operated by operating a shift lever near a maximum speed. 5. When the high speed operation switch is turned on,
The combine according to claim 4, wherein the drive speed of the mowing unit is set to be neutral. 6. The combine harvester according to claim 1, wherein when the threshing portion is being driven, the harvesting portion is driven by operating the harvesting portion of the work lever to reduce the harvesting speed. 7. A switch panel is provided with a bypass clutch for short-circuiting the input shaft of the mission case and the auxiliary transmission mechanism, and an automatic running switch for automatically turning on the bypass clutch based on a high-speed operation switch. The combine according to Item 1. 8. A threshing clutch and a reaping clutch that are turned on and off by a work lever, a reaping transmission mechanism, and a feed chain clutch in a counter case that inputs the power output from the rear side of the engine and the main shift output of the transmission case, respectively. The combine harvester according to claim 1, further comprising a forced drive clutch of the mowing unit. 9. The combine according to claim 8, wherein a traveling speed change member controlled by the speed change lever and the steering handle and a turning member controlled by the speed change lever and the steering handle are provided in the mission case. 10. A combine clutch is provided which decelerates the traveling speed change member by a turning operation of a steering handle while providing a bypass clutch for short-circuiting an auxiliary transmission mechanism on the lower side of the travel speed change member and an output shaft on the front side of the engine. .