JP2017225363A - Combine-harvester - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a combine-harvester enabled to simplify a structure for dividing longitudinally the power of a discharge conveyor in a grain tank.SOLUTION: The combine-harvester of the invention comprises: a running airframe 1 carrying an engine 7; a grain tank 6 having a bottom part conveyor 160 mounted therein; an input side case 166 mounted on the front side of the grain tank 6 confronting the engine 7; and a discharge conveyor 8 mounted on the rear face side of the grain tank 6 on the opposite side. A discharge conveyor drive belt 157 is tensed between the engine 7 and an input pulley 169 of the input side case 166 through the tension pulley 156. The tension pulley 156 is supported through a tension arm 177 on the engine room frame 145 inner-packing the engine 7. A clutch operation part 155 for fluctuating the tension arm 177 is disposed over an engine room frame 145 at the back of a drive seat 42.SELECTED DRAWING: Figure 10

Description

  The present invention relates to a combine equipped with a reaping part for reaping uncut cereal grains in a field and a threshing part for threshing grains of the harvested cereal grains.

  Conventionally, a traveling machine body having a traveling unit and a driver's seat, a reaping device having a cutting blade, a threshing device having a handling cylinder, an engine for driving each unit, and a grain tank for collecting grains of the threshing device, There is a technique for continuously harvesting and threshing the uncut cereal meal (see Patent Documents 1 to 4).

JP 2011-172536 A JP 2013-074843 A Japanese Patent Laid-Open No. 2015-029454 JP 2014-018164 A

  In the prior art disclosed in Patent Documents 1 to 3, the tension arm is supported on the input shaft between the input case and the input pulley provided on the front side of the glen tank, and the tension pulley is disposed. The tension arm hangs down from the input side case toward the lower side of the Glen tank during maintenance work that rotates the front side of the Glen tank around the axis to the outside of the traveling aircraft or assembly work that assembles the input side case to the Glen tank. There is a problem that the pulley comes into contact with the traveling machine body and is easily damaged. In addition, it is necessary to secure the load resistance of the input shaft of the input side case or its bearing by at least the support load of the tension arm and tension pulley, and the structure of the input side case (input pulley support part) cannot be simplified. There is also a problem.

  In the prior art disclosed in Patent Document 4, although the above problem can be solved, the tension pulley and the tension arm are supported on the glen tank side, so that the weight applied to the rotation fulcrum of the glen tank is the tension member. Since it is added by the amount, it is necessary to ensure a load resistance at the pivot point.

  Therefore, the present invention seeks to provide a combine that has been improved by examining these current conditions.

  In order to achieve the above object, the combine of the present invention includes a traveling machine body equipped with an engine, a Glen tank having a bottom conveyor, an input case provided on the front side of the Glen tank facing the engine, and an opposite side. In the combine provided with a discharge conveyor provided on the rear side of the Glen tank, a discharge conveyor drive belt is stretched between the engine and the input pulley of the input side case via a tension pulley, and the tension pulley includes A clutch operating part for swinging the tension arm is installed on the engine room frame and behind the driver's seat while being supported by an engine room frame that houses the engine via a tension arm.

  The said combine WHEREIN: The said clutch operation part is good also as what is provided in parallel with the conveyor operation part which operates the turning operation | movement of the said discharge conveyor.

  In the combine, the driver seat rear region in the engine room frame may be covered with a cover body, and the clutch operation unit may be installed on the upper surface of the cover body.

  In the above combine, an air cleaner connected to a fresh air introduction side to the engine may be disposed above the engine and behind the driver seat, and the cover body may cover the air cleaner.

  In the above combine, the engine room frame has a pair of engine room columns at a position between the grain tank and the engine, and the tension arm is attached to the engine room column on the outside of the machine via a fulcrum bracket. It is good also as what is axially supported.

  According to the present invention, since the clutch operating portion is installed in the engine room frame that pivotally supports the tension pulley, the clutch mechanism that interrupts power transmission from the engine to the grain discharge conveyor is integrated into the engine room frame. Assembled. Therefore, not only the assembly of the clutch mechanism that interrupts the power transmission to the grain discharge conveyor is improved, but also the positioning when connecting the clutch operating part and the tension pulley and the adjustment of the urging force by the tension spring, etc. It becomes easy.

  According to the present invention, when discharging the grain from the discharge conveyor to a truck bed or a container, the clutch operation unit and the conveyor operation unit can be operated without greatly changing the posture at the driver seat. The operability can be improved. In other words, the operator can not only operate the conveyor operation unit while checking the position of the discharge outlet of the discharge conveyor at the time of discharging the grain, but can also operate the discharge conveyor without changing the posture after turning the discharge conveyor to the desired position. Manipulate and start grain discharge.

  According to the present invention, since the clutch operation part is arranged on the upper surface of the cover body behind the driver seat, the operator can easily reach the clutch operation part from the driver seat, and the clutch mechanism is connected and disconnected by the tension pulley. Becomes easier. Further, since the clutch operation unit is disposed above the backrest of the driver seat, the operator can operate the clutch operator unit without greatly changing the posture on the driver seat.

  According to the present invention, by disposing the upper surface of the cover body above the air cleaner, the clutch operating portion can be disposed above the backrest of the driver seat. Further, in the engine room, the clutch operating portion can be efficiently arranged using the space above the air cleaner while being configured to shield the radiant heat from the engine from the air cleaner.

  According to the present invention, since the tension pulley is pivotally supported on the engine room column, the support strength of the tension pulley can be secured. In addition, the Glen tank can be deployed to the outside of the machine independently of the tension pulley, reducing the weight of the front of the Glen tank, reducing the weight burden on the rotating fulcrum of the Glen tank, and lowering the front due to its own weight The amount can be reduced and the Glen tank can be maintained in a stable posture.

It is a left view of the combine which shows 1st Embodiment of this invention. It is a right view of the combine. It is a top view of the combine. It is a drive system diagram of a combine. It is a perspective view of the combine seen from diagonally forward. It is a partial plane sectional view of a threshing part. It is a plane sectional view showing composition of an engine room and a threshing part. It is a front view which shows the structure of an engine room and a threshing part. It is a hydraulic circuit diagram which shows the structure of a working system hydraulic circuit. It is the perspective view of the engine room seen from diagonally back. It is a perspective view of the combine which developed the Glen tank. It is a perspective view which shows the structure of an auger clutch periphery. It is a top sectional view showing the configuration around the auger clutch. It is a front perspective view which shows the structure of a driver's seat periphery. It is the perspective view seen from the back upper part which shows the composition of a driver's seat periphery. It is a rear view which shows the structure behind a driver's seat. It is a top view which shows the structure behind a driver's seat.

  DESCRIPTION OF EMBODIMENTS Hereinafter, an embodiment embodying the present invention will be described based on the drawings (FIGS. 1 to 10) applied to an ordinary combine. 1 is a left side view of the combine, FIG. 2 is a right side view thereof, and FIG. 3 is a plan view thereof. First, the general structure of the combine will be described with reference to FIGS. In the following description, the left side in the forward direction of the traveling machine body 1 is simply referred to as the left side, and the right side in the forward direction is also simply referred to as the right side.

  As shown in FIGS. 1 to 3, the ordinary combine in the embodiment includes a traveling machine body 1 supported by a pair of left and right crawler belts 2 made of rubber crawlers as a traveling portion. At the front part of the traveling machine body 1, a mowing unit 3 for taking in unharmed cereals such as rice (or wheat, soybeans or corn) is mounted by a single-acting lifting hydraulic cylinder 4 so as to be adjustable up and down. ing.

  On the left side of the traveling machine body 1 is mounted a threshing unit 9 for threshing the harvested cereal meal supplied from the harvesting unit 3. In the lower part of the threshing unit 9, a grain sorting mechanism 10 for performing swing sorting and wind sorting is arranged. A driver's cab 5 on which an operator is boarded is mounted on the front right side of the traveling machine body 1. An engine 7 as a power source is disposed on the cab 5 (below the driver seat 42). Behind the cab 5 (on the right side of the traveling machine body 1), a grain tank 6 for taking the grain from the threshing unit 9 and a grain for discharging the grain in the grain tank 6 toward the truck bed (or container, etc.) A discharge conveyor 8 is arranged. The grain discharge conveyor 8 is tilted toward the outside of the machine so that the grains in the grain tank 6 are carried out by the grain discharge conveyor 8.

  The mowing unit 3 includes a feeder house 11 that communicates with the handling port 9 a at the front of the threshing unit 9, and a horizontally long bucket-shaped grain header 12 that is provided continuously at the front end of the feeder house 11. A scraping auger 13 (platform auger) is rotatably supported in the grain header 12. A take-up reel 14 with a tine bar is disposed above the front portion of the take-up auger 13. A clipper-shaped cutting blade 15 is disposed in front of the grain header 12. Left and right weed bodies 16 are provided to project from the left and right sides of the front part of the grain header 12. In addition, a supply conveyor 17 is installed in the feeder house 11. A beater-feeding beater 18 (front rotor) is provided on the feed end side (handle 9a) of the supply conveyor 17. The lower surface portion of the feeder house 11 and the front end portion of the traveling machine body 1 are connected via the lifting hydraulic cylinder 4, and the cutting portion 3 cuts with the cutting input shaft 89 (feeder house conveyor shaft) described later as a lifting fulcrum. It is moved up and down by the lifting hydraulic cylinder 4.

  With the above configuration, the tip side of the uncut grain culm between the left and right weed bodies 16 is scraped by the scraping reel 14, and the base side of the uncut grain culm is cut by the cutting blade 15. Due to the rotation drive, the harvested cereal grains are collected near the entrance of the feeder house 11 near the center of the left and right width of the grain header 12. The whole amount of the harvested cereal meal of the grain header 12 is conveyed by the supply conveyor 17 and is configured to be input to the handling port 9 a of the threshing unit 9 by the beater 18. The grain header 12 is provided with a horizontal control hydraulic cylinder (not shown) that rotates about the horizontal control fulcrum shaft, and the grain header 12 is adjusted by the horizontal control hydraulic cylinder to adjust the horizontal inclination of the grain header 12. 12, the cutting blade 15, and the take-up reel 14 can be supported horizontally with respect to the field scene.

  Moreover, as shown in FIGS. 1 and 3, a handling cylinder 21 is rotatably provided in the handling chamber of the threshing unit 9. A handling cylinder 21 is pivotally supported on a handling cylinder shaft 20 (see FIG. 4) extended in the front-rear direction of the traveling machine body 1. On the lower side of the handling cylinder 21, a receiving net 24 for allowing the grains to leak is stretched. In addition, a spiral screw blade-shaped intake blade 25 projects outward in the radial direction on the outer peripheral surface of the front portion of the handling cylinder 21.

  With the above-described configuration, the harvested cereal mash introduced from the handling port 9a by the beater 18 is conveyed toward the rear of the traveling machine body 1 by the rotation of the handling cylinder 21 and is, for example, between the handling cylinder 21 and the receiving net 24. Kneaded and threshed. The threshing of grains or the like smaller than the mesh of the receiving net 24 leaks from the receiving net 24. The sawdust and the like that do not leak from the receiving net 24 are discharged from the dust outlet 23 at the rear of the threshing portion 9 to the field by the conveying action of the handling cylinder 21.

  A plurality of dust feed valves (not shown) for adjusting the conveying speed of shed grains in the handling chamber are pivotally mounted on the upper side of the handling cylinder 21 so as to be rotatable. By adjusting the angle of the dust feed valve, the conveying speed (residence time) of threshing in the handling chamber can be adjusted according to the variety and properties of the harvested cereal. On the other hand, the grain sorting mechanism 10 disposed below the threshing unit 9 includes a rocking sorter 26 for specific gravity sorting having a grain pan, a chaff sheave, a grain sheave, a Strollac, and the like.

  Further, as the grain sorting mechanism 10, a blower fan-shaped tongue 29 for supplying sorting wind to the swing sorting board 26 is provided. The threshing that has been threshed by the handling cylinder 21 and leaked from the receiving net 24 is caused by the specific gravity sorting action of the swing sorter 26 and the wind sorting action of the blower fan-shaped tang 29, so No.), a mixture of grain and straw (second thing such as grain with branches), and wastes are selected and extracted.

  A first conveyor mechanism 30 and a second conveyor mechanism 31 are provided on the lower side of the swing sorter 26 as the grain sorting mechanism 10. The grain (first thing) dropped from the swing sorter 26 by the sorting of the swing sorter 26 and the blower fan-shaped tongue 29 is collected in the grain tank 6 by the first conveyor mechanism 30 and the cereal conveyor 32. The The mixture of grains and straw (second product) is returned to the sorting start end side of the swing sorting plate 26 through the second conveyor mechanism 31 and the second reduction conveyor 33 and is re-sorted by the swing sorting plate 26. The The sawdust and the like are configured to be discharged from the dust outlet 23 at the rear of the traveling machine body 1 to the field.

  Further, as shown in FIGS. 1 to 3, the cab 5 is provided with a control column 41 and a driver seat 42 on which an operator sits. The steering column 41 includes an accelerator lever 40 that adjusts the rotational speed of the engine 5, a round steering handle 43 that changes the course of the traveling machine body 1 by a rotation operation by an operator, and a main body that switches the moving speed of the traveling machine body 1. A shift lever 44 and a sub-shift lever 45, a cutting clutch lever 46 for driving or stopping the cutting unit 3, and a threshing clutch lever 47 for driving or stopping the threshing unit 9 are arranged. A sunshade roof body 49 is attached to the front upper surface side of the Glen tank 6 via a sun visor support 48 so that the sunshade roof body 49 covers the upper side of the cab 5.

  As shown in FIGS. 1 and 2, left and right track frames 50 are arranged on the lower surface side of the traveling machine body 1. The track frame 50 includes a drive sprocket 51 that transmits the power of the engine 7 to the crawler belt 2, a tension roller 52 that maintains the tension of the crawler belt 2, a plurality of track rollers 53 that hold the ground side of the crawler belt 2 in a grounded state, An intermediate roller 54 that holds the non-grounding side of the crawler belt 2 is provided. The front side of the crawler belt 2 is supported by the drive sprocket 51, the rear side of the crawler belt 2 is supported by the tension roller 52, the ground side of the crawler belt 2 is supported by the track roller 53, and the non-ground side of the crawler belt 2 is supported by the intermediate roller 54 To be configured.

  Next, the combine drive structure will be described with reference to FIGS. As shown in FIG. 4, the transmission case 63 is provided with a linear hydraulic continuously variable transmission 64 for traveling speed change having a hydraulic linear pump and a hydraulic linear motor. The engine 7 is mounted on the upper right side of the front part of the traveling machine body 1, and the mission case 63 is arranged on the front part of the traveling machine body 1 on the left side of the engine 7. An output shaft 65 projecting leftward from the engine 7 and a mission input shaft 66 projecting leftward from the mission case 63 are connected via an engine output belt 67, an engine output pulley 68, and a mission input pulley 69. Yes.

  In addition, a turning hydraulic continuously variable transmission 70 for steering having a hydraulic swing pump and a hydraulic swing motor is provided in the mission case 63, and a straight hydraulic continuously variable transmission 64 and a swing hydraulic continuously variable transmission via a mission input shaft 66. While transmitting the output of the engine 7 to the transmission 70, the steering handle 43, the main transmission lever 44 and the auxiliary transmission lever 45 control the output of the straight hydraulic continuously variable transmission 64 and the turning hydraulic continuously variable transmission 70. The left and right crawler belts 2 are driven via a straight hydraulic continuously variable transmission 64 and a swing hydraulic continuously variable transmission 70 so as to travel and move in the field.

  Furthermore, as shown in FIGS. 4 to 8, a handling cylinder drive case 71 that pivotally supports the front end side of the handling cylinder shaft 20 is provided. A barrel driving case 71 is disposed on the front side of the threshing unit 9. A handling cylinder input shaft 72 for driving the cutting unit 3 and the handling cylinder 21 is supported by a handling cylinder drive case 71. Moreover, the main countershaft 76 as a fixed rotating shaft penetrated in the right and left of the threshing part 9 is provided. A working unit input pulley 83 is provided at the right end of the main counter shaft 76. The right end of the main counter shaft 76 is connected to an engine output pulley 68 on the output shaft 65 of the engine 7 via a threshing clutch 84 that also serves as a tension roller and a working unit drive belt 85.

  A handling cylinder input shaft 72 that extends in the left-right direction of the traveling machine body 1, a beater 18 that is disposed in the left-right direction of the traveling machine body 1, and a cutting input shaft that extends in the left-right direction of the traveling machine body 1. 89 is provided. The cylinder input mechanism 90 for transmitting the driving force of the main counter shaft 76 to the cylinder input shaft 72 includes cylinder driving pulleys 86 and 87 and a cylinder driving belt 88, and the driving force from the engine 7 is transmitted. A handling cylinder input mechanism 90 (cylinder driving pulleys 86 and 87 and a handling cylinder driving belt 88) is arranged at one end of the counter shaft 76 on the engine 7 side, and the handling cylinder 21 is driven to rotate at a constant rotational output by the engine 7. It is configured as follows.

  A beater driving mechanism and a cutting drive mechanism that transmit the driving force of the main counter shaft 76 to the beater shaft 82 and the cutting input shaft 89 are provided on the other end side of the main counter shaft 76. A sub-counter shaft 104 is disposed between the beater shaft 82 and the main counter shaft 76, and a power relay belt 113 is wound around the power relay pulleys 105 and 106 provided on the main counter shaft 76 and the sub-counter shaft 104. A power relay mechanism that is rotated and transmits power to the cutting drive mechanism is configured.

  A cutting drive belt 114 is wound around the cutting drive pulleys 107 and 108 provided on the sub-counter shaft 104 and the beater shaft 82, respectively, thereby constituting a beater driving mechanism. The cutting drive belt 114 is stretched by the cutting clutch 109 that also serves as a tension roller, so that the rotational power from the engine 7 transmitted to the main counter shaft 76 is transferred to the beater via the power relay mechanism and the beater driving mechanism. Input to the shaft 82. Further, the cutting drive mechanism is configured so that the cutting drive force from the engine 7 is transmitted from the beater shaft 82 on which the beater 18 is supported to the cutting input shaft 89 through the cutting drive chain 115 and the sprockets 116 and 117. ing. Accordingly, the cutting unit 3 is driven to rotate at a constant rotation output of the engine 7 together with the beater 18.

  The rotary shaft 100 which is the rotational axis of the blower fan-shaped tongue 29 has a hollow tube shape, and the main counter shaft 76 is inserted into the hollow portion of the tongue shaft 100. That is, the main counter shaft 76 and the red shaft 100 have a double shaft structure, and the main counter shaft 76 and the red shaft 100 are pivotally supported so as to be rotatable relative to each other. In addition, a tang drive belt 103 is wound around the tang drive pulleys 101 and 102 provided on the sub-counter shaft 104 and the tang shaft 100, respectively, thereby forming a tang drive mechanism. Therefore, the rotational power from the engine 7 transmitted to the main counter shaft 76 is input to the beater shaft 82 via the power relay mechanism and the Karatsu drive mechanism, and the Karatsu 29 is driven to rotate at a constant rotation output of the engine 7.

  Further, the machine housing 9 b of the threshing unit 9 has a cutting support frame 36 on the upper surface side of the front part of the threshing machine housing column 34 in the upper surface side of the traveling machine body 1. A cutting bearing body 37 is attached to the front right side of the cutting support frame body 36, and a forward / reverse switching case 121, which will be described later, is attached to the front left side of the cutting support frame body 36. The cutting input shaft 89 is pivotally supported on the front side of the cutting support frame 36 via the cutting bearing body 37 and the forward / reverse switching case 121 so as to be turnable in the left-right direction of the traveling machine body 1, and the cutting support frame 36. A beater shaft 82 (beater 18) facing left and right is pivotally supported via a beater bearing body 38. A handling cylinder drive case 71 is attached to the upper surface side of the cutting support frame 36, and a handling cylinder input shaft 72 is pivotally supported on the handling cylinder drive case 71.

  On the other hand, a cutting input shaft 89 facing left and right for driving the supply conveyor 17 in the feeder house 11 is provided. The forward / reverse transmission shaft of the forward / reverse switching case 121 is transmitted from the other end of the main counter shaft 76 on the opposite side to the engine 7 to the cutting drive force transmitted from the engine 7 to the one end of the main counter shaft 76 on the engine 7 side. 122. The cutting input shaft 89 is driven via the forward rotation bevel gear 124 or the reverse rotation bevel gear 125 of the forward / reverse switching case 121.

  In addition, a left and right handling cylinder input shaft 72 is provided on the front side of the threshing portion 9, and the driving force transmitted from the engine 7 to one end of the main counter shaft 76 on the engine 7 side is one end on the engine 7 side of the handling cylinder input shaft 72. Transmitted to the department. A handling cylinder input shaft 72 provided on the front side of the threshing unit 9 is arranged in the left-right direction of the traveling machine body 1, while the handling cylinder 21 is pivotally supported by the handling cylinder shaft 20 arranged in the front-rear direction of the traveling machine body 1. The front end side of the handling cylinder shaft 20 is connected to the left and right other ends of the handling cylinder input shaft 72 opposite to the engine 7 via a bevel gear mechanism 75. The driving force of the engine 7 is transmitted from the other left and right end portions of the main counter shaft 76 opposite to the engine 7 to the grain selecting mechanism 10 for selecting the grain after threshing or the cutting unit 3. .

  That is, the right end portion of the barrel input shaft 72 is connected to the right end portion of the main counter shaft 76 on the side close to the engine 7 via the barrel driving pulleys 86 and 87 and the barrel driving belt 88. A front end side of the handling cylinder shaft 20 is connected to a left end portion of the handling cylinder input shaft 72 extending in the left-right direction via a bevel gear mechanism 75. The power of the engine 7 is transmitted from the right end portion of the main counter shaft 76 to the front end side of the barrel shaft 20 via the barrel input shaft 72, and the barrel 21 is rotationally driven in one direction. On the other hand, the driving force of the engine 7 is transmitted from the left end portion of the main counter shaft 76 to the grain sorting mechanism 10 disposed below the threshing section 9.

  Furthermore, the left side end of the main counter shaft 76 is connected to the left end portion of the first conveyor shaft 77 of the first conveyor mechanism 30 and the left end portion of the second conveyor shaft 78 of the second conveyor mechanism 31 via the conveyor drive belt 111. The ends are connected. The left end portion of the second conveyor shaft 78 is connected to the left end portion of the crank-shaped swing drive shaft 79 pivotally supported by the rear portion of the swing sorting plate 26 via the swing sorting belt 112. That is, the threshing clutch 84 is controlled to be turned on and off by the operation of the threshing clutch lever 47 by the operator. Each part of the grain sorting mechanism 10 and the handling cylinder 21 are driven by an operation of turning on the threshing clutch 84.

  The cereal conveyor 32 is driven via the first conveyor shaft 77, and the first selected grain of the first conveyor mechanism 30 is collected in the glen tank 6. The second reduction conveyor 33 is driven via the second conveyor shaft 78, and the second selected grain (second product) mixed with the sawdust from the second conveyor mechanism 31 is moved to the upper side of the swing sorter 26. Returned to Further, in the structure in which the dust discharge port 23 is provided with a spreader (not shown) for dust dispersion, the left side of the main counter shaft 76 is connected to the spreader via a spreader drive pulley (not shown) and a spreader drive belt (not shown). Connect the ends.

  A cutting input shaft 89 is provided as a conveyor input shaft that pivotally supports the feed terminal side of the supply conveyor 17. A header drive shaft 91 is rotatably supported on the right side rear side of the grain header 12. The left end of the beater shaft 82 is connected to the left end of the forward / reverse transmission shaft 122 via the cutting drive chain 115 and the sprockets 116 and 117, and the cutting input shaft 89 transmits forward / reverse transmission via the forward / reverse switching case 121. The shaft 122 is connected. Further, the right end of the cutting input shaft 89 is connected to the left end of the header drive shaft 91 extending in the left-right direction via the header drive chain 118 and the sprockets 119 and 120. A scraping shaft 93 that pivotally supports the scraping auger 13 is provided. An intermediate portion of the header drive shaft 91 is connected to the right side portion of the drive shaft 93 via a drive drive chain 92.

  A reel shaft 94 that pivotally supports the take-up reel 14 is also provided. The right end portion of the take-in shaft 93 is connected to the right end portion of the reel shaft 94 via an intermediate shaft 95 and reel drive chains 96 and 97. The cutting blade 15 is connected to the right end portion of the header driving shaft 91 via a cutting blade driving crank mechanism 98. By the turning-on / off operation of the harvesting clutch 109, the supply conveyor 17, the take-up auger 13, the take-up reel 14, and the cutting blade 15 are driven and controlled so as to continuously cut the tip side of the uncut grain culm in the field. It is configured.

  A forward bevel gear 124 integrally formed with the forward / reverse transmission shaft 122, a reverse bevel gear 125 rotatably supported on the cutting input shaft 89, and an intermediate bevel gear 126 that connects the reverse bevel gear 125 to the forward bevel gear 124. , It is installed in the forward / reverse switching case 121. The intermediate bevel gear 126 is always meshed with the forward bevel gear 124 and the reverse bevel gear 125. On the other hand, the slider 127 is slidably supported on the cutting input shaft 89 by a spline engagement shaft. The slider 127 is configured to be detachably engageable with the forward rotation bevel gear 124 via the claw clutch-shaped forward rotation clutch 128, and the slider 127 is engaged with the reverse rotation bevel gear 125 via the claw clutch-shaped reverse rotation clutch 129. It is configured to be detachably engageable.

  Further, the forward / reverse switching shaft 123 for sliding the slider 127 is provided, and the forward / reverse switching arm 130 is provided on the forward / reverse switching shaft 123, and the forward / reverse switching arm 130 is operated by operating the forward / reverse switching lever 212 (forward / reverse operation tool). , The forward / reverse switching shaft 123 is rotated, the slider 127 is brought into and out of contact with the forward bevel gear 124 or the reverse bevel gear 125, and the forward bevel gear 124 or the reverse rotation via the forward clutch 128 or the reverse clutch 129. The slider 127 is selectively locked to the bevel gear 125, and the cutting input shaft 89 is connected to the forward / reverse transmission shaft 122 in the forward rotation connection or the reverse rotation connection.

  The feed conveyor 17 has a forward / reverse switching case 121 as a forward / reverse switching mechanism for driving forward or reverse rotation of the supply conveyor 17, and the supply conveyor 17 is connected to the beater shaft 82 via the forward / reverse switching case 121. Therefore, the feed conveyor 17 and the like of the feeder house 11 can be reversely rotated by the reverse rotation switching operation of the forward / reverse switching case 121, and the clogs in the feeder house 11 and the like can be quickly removed.

  The right end of the auger drive shaft 158 is connected to the output shaft 65 of the engine 7 via the tension pulley-like auger clutch 156 and the auger drive belt 157. The front end side of a lateral feed auger (bottom conveyor) 160 at the bottom of the Glen tank 6 is connected to the left end of the auger drive shaft 158 via a bevel gear mechanism 159. The longitudinal feed auger 162 of the grain discharge conveyor 8 is connected to the rear end side of the lateral feed auger 160 via the bevel gear mechanism 161, and the grain of the grain discharge conveyor 8 is connected to the upper end side of the vertical feed auger 162 via the bevel gear mechanism 163. The grain discharge auger 164 is connected. Moreover, the grain discharge lever 155 which turns on and off the auger clutch 156 is provided. A grain discharge lever 155 is attached to the rear of the driver seat 42 and in front of the grain tank 6 so that the operator can operate the grain discharge lever 155 from the driver seat 42 side.

  In the transmission case 63, a hydraulic continuously variable transmission 64 for linear movement (traveling main transmission) having a pair of linear pumps and linear motors, and a hydraulic continuously variable transmission for rotation having a pair of rotational pumps and a rotational motor. The machine 70 is provided. The transmission input shaft 66 of the transmission case 63 is connected to the pump shafts of the above-mentioned linear pump and revolving pump, respectively, and is driven. An engine output belt 67 is wound around a mission input pulley 69 on the mission input shaft 66. The output of the engine 7 is transmitted to the mission input pulley 69 via the engine output belt 67 to drive the above-described linear pump and swing pump.

  The driving force output from the output shaft 65 of the engine 7 is transmitted to the pump shaft of the rectilinear pump and the pump shaft of the swing pump via the engine output belt 67 and the mission input shaft 66, respectively. In the straight-traveling hydraulic continuously variable transmission 64, hydraulic oil is appropriately fed from the straight-running pump toward the straight-running motor by the power transmitted to the pump shaft. Similarly, in the turning hydraulic continuously variable transmission 70, hydraulic oil is appropriately fed from the turning pump toward the turning motor by the power transmitted to the pump shaft.

  A charge pump 151 for supplying hydraulic oil to each of the hydraulic continuously variable transmissions 64 and 70 is attached to the pump shaft of the linearly-moving continuously variable transmission 64. The linear hydraulic continuously variable transmission 64 changes and adjusts the inclination angle of the rotary swash plate in the linear pump in accordance with the amount of operation of the main transmission lever 44 and the steering handle 43 arranged in the steering column 41, thereby driving the linear motor. By changing the discharge direction and the discharge amount of the hydraulic oil, the rotation direction and the rotation speed of the linear motor shaft protruding from the linear motor are arbitrarily adjusted.

  The turning hydraulic continuously variable transmission 70 changes and adjusts the inclination angle of the rotary swash plate in the turning pump according to the amount of turning operation of the main transmission lever 44 and the steering handle 43 arranged in the steering column 41, By changing the discharge direction and discharge amount of the hydraulic oil to the turning motor, the rotation direction and the number of rotations of the turning motor shaft protruding from the turning motor are arbitrarily adjusted.

  Next, the working system hydraulic circuit 180 in the ordinary combine according to the present embodiment will be described with reference to FIG. As shown in FIG. 9, the working system hydraulic circuit 180 includes, as hydraulic actuators, a cutting lift hydraulic cylinder 4, left and right reel lifting hydraulic cylinders 27L and 27R that support the take-up reel 14 so as to be movable up and down, and grain discharge. An auger lifting / lowering hydraulic cylinder 55 that supports the auger 164 so as to be lifted / lowered, left and right machine lifting / lowering hydraulic cylinders 56L and 56R that lift and lower the traveling machine body 1, a hydraulic oil tank 57 that stores hydraulic oil, and a hydraulic oil tank 57 A hydraulic pump 59 connected via an oil filter 58 and hydraulic valves 60A to 60E for switching the flow of hydraulic oil are provided. The hydraulic valves 60 </ b> A to 60 </ b> E are incorporated in a hydraulic valve unit body 60 that is mounted on the traveling machine body 1.

  The hydraulic pump 59 is hydraulically connected to the cutting lift hydraulic cylinder 4 via the cutting lift hydraulic valve 60A. By operating a cutting posture lever (not shown) in the driving operation unit (operating platform) 5 to tilt in the front-rear direction, the cutting lift hydraulic cylinder 4 is operated, and the operator moves the cutting unit 3 to an arbitrary height (for example, cutting work height). Alternatively, it is configured to move up and down to a non-working height or the like. On the other hand, the working hydraulic pump 59 is hydraulically connected to the reel lifting hydraulic cylinders 27L and 27R via the reel lifting hydraulic valve 60B. The operation of tilting the cutting posture lever (not shown) in the left-right direction and the like actuate the hydraulic cylinders 27L and 27R for raising and lowering the reel, and the operator raises and lowers the take-up reel 14 to an arbitrary height, It is configured to reap cocoons.

  The working hydraulic pump 59 is hydraulically connected to the auger lifting hydraulic cylinder 55 via the auger lifting hydraulic valve 60C. By a tilting operation of the grain discharge lever 155 in the driving operation unit (driver's cab) 5 in the front-rear direction, the auger lifting / lowering hydraulic cylinder 55 is actuated, and the operator throws the spear outlet of the grain discharge auger 164 in the grain discharge conveyor 8. Is moved up and down to an arbitrary height. In addition, the grain discharge auger 164 is rotated in the horizontal direction together with the longitudinal feed auger 162 and the bevel gear mechanism 163 by the electric motor 165, and the culm throwing hole is moved in the horizontal direction. That is, it is configured such that the culling spout is positioned above the truck bed or container, and the grains in the Glen tank 6 are discharged into the truck bed or container.

  The hydraulic oil tank 57 and the working hydraulic pump 59 are hydraulically connected to the left aircraft lifting hydraulic cylinder 56L via the left aircraft lifting hydraulic valve 60D. On the other hand, the hydraulic oil tank 57 and the working hydraulic pump 59 are hydraulically connected to the right aircraft lifting hydraulic cylinder 56R via the right aircraft lifting hydraulic valve 60E. The left and right airframe lifting hydraulic cylinders 56L and 56R are independently operated to raise and lower the left and right sides of the traveling body 1 independently.

  Accordingly, when the left and right hydraulic cylinders 56L and 56R are operated simultaneously and the left and right track frames 50 and 50 are simultaneously lowered with respect to the traveling machine 1, the traveling machine 1 is connected to the left and right crawler belts 2 and 2 grounding portions. In contrast, the relative height (vehicle height) of the traveling machine body 1 with respect to the crawler belts 2, 2 is increased. On the contrary, when the left and right track frames 50, 50 are simultaneously raised with respect to the traveling machine body 1, the traveling machine body 1 approaches (falls) to the crawler belts 2, 2 on both sides of the left and right sides, so , 2 The relative height (vehicle height) with respect to the ground contact portion is reduced.

  Then, the left body lifting / lowering hydraulic cylinder 56L is operated to lower the left truck frame 50 with respect to the traveling body 1, or the right body lifting / lowering hydraulic cylinder 56R is operated to raise the right truck frame 50 relative to the traveling body 1. (Or even if both of these operations are performed simultaneously), the traveling machine body 1 tilts downward. Conversely, the right airframe lifting hydraulic cylinder 56R is operated to lower the right truck frame 50 relative to the traveling machine body 1, or the left airframe lifting hydraulic cylinder 56L is operated to move the right truck frame 50 relative to the traveling body 1. When it is raised (or even if both of these operations are performed simultaneously), the traveling machine body 1 tilts downward to the left.

  The hydraulic oil tank 57 is installed on the traveling machine body 1 in a space position surrounded by the feeder house 11 and the beater 18, and the engine 7 and the hydraulic oil tank 57 are arranged side by side in front of the traveling machine body 1. Yes. That is, the hydraulic oil tank 57 is disposed in a space surrounded by the feeder house 11 and the machine housing of the threshing unit 9, and dust from the cutting unit 3 can be suppressed from accumulating in the hydraulic oil tank 57. Contamination of the hydraulic oil due to the intrusion of dust from the oil filler port 184 and the like can also be prevented. Further, since the cooling air from the engine 7 flows into the installation space of the hydraulic oil tank 57, an increase in the hydraulic oil temperature can be suppressed without providing an oil cooler on the work system hydraulic circuit 180. It can be driven properly.

  The hydraulic oil tank 57 has an oil supply port 184 projecting toward the left side (outer side of the machine) on the left side (outer side of the machine) and an oil filter 58 that can be inserted and removed from the left side. Therefore, the oil supply port 184 and the oil filter 58 can be easily accessed by removing the threshing cover 185 provided on the left side (machine outer side) of the threshing unit 9. Therefore, the refueling operation of the hydraulic oil tank 57 and the replacement operation of the oil filter 58 are facilitated, and the maintainability in the hydraulic circuit 180 can be improved.

  Next, the configuration around the engine room 146 in which the engine 7 is installed will be described with reference to FIGS. 7, 8, 10 to 12, and the like. As shown in FIGS. 7, 8, 10 to 12, and the like, a pair of left and right engine room columns 147 are erected on the rear surface of the cab 5 on the upper surface of the traveling machine body 1, and the backs of the engine room columns 147 on the left and right A face plate body 148 is stretched to cover the rear of the engine room 146 below the driver seat 42. Further, a box-shaped wind tunnel case 170 is erected on the right engine room column 147 provided at the right end portion of the cab 5 in the traveling machine body 1 via the opening / closing fulcrum shaft 171. A dust removal net is provided in the opening on the right side of the wind tunnel case 170, and the presence of the dust removal net prevents dust and the like from entering the wind tunnel case 170 and the engine room 146.

  A water cooling radiator 154 is erected inside the wind tunnel case 170 on the upper surface side of the traveling machine body 1, and the radiator 154 is opposed to the cooling fan 149 of the engine 7. And the shroud 150 of the aspect which covers the whole ventilation range part of the radiator 154 is installed, and the cooling fan 149 is arrange | positioned in the opening formed in this shroud 150. FIG. An oil cooler 153 is installed in the wind tunnel case 170. By the rotation of the cooling fan 149, outside air (cooling air) is taken into the wind tunnel case 170 from the opening on the right side of the wind tunnel case 170, and the cooled cooling air is removed from the opening on the left side of the wind tunnel case 170 in the engine room 146. To send. Thereby, the oil cooler 153, the radiator 154, the engine 7 and the like are cooled by the cooling air flowing into the engine room 146.

  The upper ends of the pair of left and right engine room columns 147 are connected by an upper horizontal frame 172 to constitute a rear part of the engine room frame 145. A seat base 173 on which the driver seat 42 is mounted is provided so as to cover the upper part of the engine room 146, and a back cover body 174 is provided behind the driver seat 42. The seat base 173 is installed so as to cover the upper part of the engine room 146, and the rear edge of the seat base 173 is connected to the middle part of the pair of left and right engine room columns 147. The back cover body 174 is connected to the upper horizontal frame 172 and the seat base 173, and is fixed on the upper surface of the seat base 173 and behind the driver seat 42.

  In the engine room 146, a silencer 131 that reduces exhaust noise is installed on the upper front side of the engine 7 via a muffler support bracket. An exhaust inlet of the silencer 131 is connected to the exhaust manifold of the engine 7 via the turbine of the supercharger 132, and one end side of the tail pipe 133 is connected to the exhaust outlet of the silencer 131. A main air cleaner 134 for introducing fresh air (outside air) into the engine 7 is installed on the upper surface of the seat base 173 and behind the driver seat 42. The fresh air outlet of the main air cleaner 134 is connected to the intake manifold of the engine 7 through the compressor of the supercharger 132, while the fresh air outlet of the front air cleaner (pre-cleaner) 135 is connected to the fresh air inlet of the main air cleaner 134. Is done.

  As shown in FIGS. 7, 8, and 10 to 15, the tail pipe 133 extends in the front-rear direction of the traveling machine body 1 between the threshing unit 9 where the cerealing conveyor 32 is disposed and the Glen tank 6. ing. The front end side of the tail pipe 133 is communicated with a silencer 131 at the top of the engine 7. The rear end of the tail pipe 133 opens rearward and obliquely upward at the upper rear of the Glen tank 6. That is, the exhaust gas of the engine 7 is discharged from the rear end of the tail pipe 133 between the threshing unit 9 and the Glen tank 6 toward the upper rear of the Glen tank 6.

  A front support frame body 221 is fastened and fixed to the right side portion of the machine housing 9b of the threshing section 9, and the front end side of the tail pipe 133 is connected and supported to the front support frame body 221 via the front support bracket body 222. . In addition, a tank support frame body 223 that locks the grain tank 6 that can be deployed on the outer side of the machine at a grain collection position (machine body storage position), and a cereal support frame body 224 that supports the erection conveyor 32 upright. The machine casing 9b is installed on the machine casing frame at the upper right part. The front and rear intermediate parts of the tail pipe 133 are connected and supported to the tank support frame body 223 via the intermediate support bracket body 225, and the rear end side of the tail pipe 133 is connected to the cereal support frame body 224 via the rear support bracket body 226. Support connection. An intermediate portion or a rear end portion of the tail pipe 133 is extended in the longitudinal direction of the machine body along the right outer surface of the threshing portion 9.

  The front end portion of the tail pipe 133 is extended in a forward-lowering posture toward the silencer 131 below the rear portion of the side column 39 where the reaping clutch lever 46 or the threshing clutch lever 47 is disposed. And the heat insulation cover body 227 which covers the front side of the front-falling front end part of the tail pipe 133 is provided. The inclined lower end side of the heat shield cover body 227 is fastened and fixed to the rear part of the side column 39, and the inclined upper end side of the heat shield cover body 227 is protruded obliquely upward at the rear part of the side column 39, so that the operation on the right side of the side column 39 is performed. The front end of the tail pipe 133 is shielded from the seat 42 by a heat shield cover 227. Accordingly, the heat shield cover 227 prevents the hot air on the tail pipe 133 side from moving toward the operator of the driver seat 42.

  As shown in FIGS. 7, 8, and 10 to 15, the main air cleaner 134 is mounted on the upper surface behind the driver seat 42 among the upper surfaces of the seat base 173 covering the upper part of the engine room 146 via the cleaner support base 136. ing. That is, the main air cleaner 134 is installed in a space covered with the back cover body 174 on the seat base 173. In addition, a resonance case body 137 is installed between the main air cleaner 134 and the front air cleaner 135 in order to reduce intake noise generated when fresh air (outside air) is introduced through the main air cleaner 134 and the front air cleaner 135. Has been.

  The resonance case body 137 is placed on a resonance case base 139 provided on the left engine room column 147. The resonance case body 137 is fixed to the upper horizontal frame 172 by winding the left and right sides and the rear side thereof around the fastening band body 140. On the upper surface of the middle part of the upper horizontal frame 172, a contact plate body 141 is erected, and the front surface of the resonance case body 137 is brought into contact with the back surfaces of the contact plate body 141 and the upper horizontal frame 172.

  In addition, a front air cleaner 135 is fixed to the outer surface of the grain discharge case 32 a at the upper end of the cereal conveyor 32 via a front bracket body 138. Thus, the front air cleaner 135 is detachably supported at a position higher than the upper surface of the grain tank 6 between the upper right part of the threshing unit 9 and the upper left part of the Glen tank 6. Furthermore, on the upper surface of the upper horizontal frame 172, a digestive organ fixing frame 142 is erected at a position adjacent to the contact plate body 141. A metal fitting 143 made of a metal rod is provided in front of the digestive organ fixing frame 142, and the gastrointestinal 144 is installed on the back of the driver seat 42 so as to be sandwiched by the fixing metal 143.

  Next, the structure around the glen tank 6 will be described with reference to FIGS. An input side case 166 as a bevel input side case in which a bevel gear mechanism 159 on the input side of the lateral feed auger 160 is provided, and a transfer case 167 in which a bevel gear mechanism 161 on the output side of the lateral feed auger 160 is provided It is installed at the front and back. A shaft support plate 179 is fastened and fixed to the outer front surface of the front side wall of the Glen tank 6. That is, the input side case 166 is fixed to the lower part of the outer front surface of the Glen tank 6 via the shaft support plate 179, and the transfer case 167 is connected to the lower part of the rear surface of the Glen tank 6 so that the input side case 166 and the transfer case are connected. A transverse feed auger 160 serving as a bottom conveyor is rotatably disposed between 167.

  10 to 13 and the like, an auger clutch (tension pulley) 156 is interposed between the output pulley 168 supported on the output shaft 65 of the engine 7 and the input pulley 169 of the input side case 166. Then, an auger drive belt (discharge conveyor drive belt) 157 is stretched. The input pulley 169 is pivotally supported on an auger drive input shaft 158 that protrudes from the right side surface of the input side case 166 toward the right side. Further, the right side portion of the fulcrum bracket 175 is fixed to the right engine room column 147, and the base end side of the tension arm 177 is pivotally supported on the left side portion of the fulcrum bracket 175 via the tension arm fulcrum shaft 176. An auger clutch 156 is pivotally supported on the distal end side of the tension arm 177 via a tension pulley shaft 178.

  One end side (right end) of the tension arm fulcrum shaft 176 is fixed to the right engine room column 147 via a fulcrum bracket 175, and the other end side of the tension arm fulcrum shaft 176 is extended in the left-right width direction of the traveling machine body 1 The base end side (front end side) of the tension arm 177 is pivotally supported on the other end side (left end) of the arm fulcrum shaft 176 so as to be rotatable. A tension arm 177 is extended toward an input pulley 169 that is pivotally supported on the input side case 166, and an auger clutch 156 is pivotally supported on the front end side (rear end side) of the tension arm 177. As a result, when the auger clutch 156 is supported at the clutch disengagement position and the glen tank 6 is opened and closed, the auger clutch 156 can be maintained while being supported by the engine room frame 145.

  The tension pulley shaft 170 is connected to the grain discharge lever 155 via a tension spring 231 and a clutch rod 232. The base end side of the tension arm 177 is axially supported by the engine room frame 145 in the engine room 146, and the tip end side of the tension arm 177 is connected to the grain discharge lever 155 via the tension spring 231 and the clutch rod 232. An auger clutch (tension pulley) 156 pivotally supported at the tip of the tension arm 177 swings in the vertical direction. That is, by operating the grain discharge lever 155, the auger clutch 156 is raised to enter a clutch-engaged state that tensions the discharge conveyor drive belt 157, while the auger clutch 156 is lowered to lower the discharge conveyor drive belt 157. Set the clutch to the loosened state.

  As shown in FIGS. 10, 11, 14 to 17, etc., a grain discharge lever 155 for turning on and off the drive of the grain discharge conveyor 8 (on / off operation of the conveyor clutch) is provided. The grain discharge lever 155 is a clutch operating unit for connecting and disconnecting the auger clutch 156, and is installed on the upper surface of the back cover body 174 above the engine room frame 145. That is, an auger clutch (tension pulley) 156 is supported by an engine room frame 145 that houses the engine 7 via a tension arm 177 and a grain discharge lever (clutch operating portion) 155 that swings the tension arm 177 is provided. It is installed on the engine room frame 145 and behind the driver seat 42.

  Since the grain discharge lever (clutch operating unit) 155 is installed in the engine room frame 145 that pivotally supports the auger clutch (tension pulley) 156, the clutch that interrupts power transmission from the engine 7 to the grain discharge conveyor 8 The mechanism can be assembled to the engine room frame 145 integrally. Therefore, not only the assembly of the clutch mechanism for interrupting the transmission of power to the grain discharge conveyor 8 is improved, but also the positioning when connecting the grain discharge lever 155 and the auger clutch 156 and the attachment by the tension spring 231. The power can be easily adjusted.

  The grain discharge lever 155 is installed in a lever box 233 placed on the upper surface of the back cover body 174, and is located behind the driver seat 42 and above the backrest of the driver seat 42. That is, the grain discharge lever 155 is pivotally supported on the machine outer side surface (right side surface) of the lever box 233 so that it can be tilted up and down above the backrest of the driver seat 42. Therefore, the operator can easily reach the grain discharge lever 155 from the driver seat 42 and the auger clutch 156 can be easily disconnected.

  The grain discharge lever 155 is juxtaposed with an auger turning lever (conveyor operation unit) 234 for operating the turning action of the grain discharging conveyor 8 behind the driver seat 42. Therefore, the operator operates the grain discharge lever 155 and the auger turning lever 234 without greatly changing the posture at the driver seat 42 when discharging the grain from the grain discharge conveyor 8 to a truck bed or a container. It is possible to improve the operability during grain discharge. That is, the operator can not only operate the auger turning lever 234 while confirming the position of the outlet of the grain discharging auger 164 at the time of discharging the grain, but also posture after turning the grain discharging auger 164 to a desired position. The grain discharge lever 155 can be operated without changing the value to start the grain discharge.

  Further, the auger turning lever 234 is installed on the upper surface of the lever box 233 and is disposed above the backrest of the driver seat 42. Therefore, the operator can easily operate the auger turning lever 234 while sitting on the driver's seat 42. Moreover, since the operator on the driver's seat 42 can operate the auger turning lever 234 while viewing the grain discharge auger 164, the grain discharge auger 164 can be safely turned to the operator's desired position.

  The grain discharge lever 155 is disposed on the right side (the outside of the machine) of the driver seat 42 in a plan view, and is fixed to the right end portion of the lever fulcrum shaft 235 that penetrates the right side surface of the lever box 233. The lever fulcrum shaft body 235 is pivotally supported by a fulcrum bracket body 236 fixed to the upper horizontal frame 172 and the back cover body 173. On the upper surface of the fulcrum bracket body 236, a lever fulcrum shaft body 235 and a relay fulcrum shaft body 237 are juxtaposed in the front-rear direction so that their axial directions are parallel to each other. The lever box 233 is connected and fixed to the fulcrum bracket body 236 so as to cover the lever fulcrum shaft body 235, the fulcrum bracket body 236, and the relay fulcrum shaft body 237, and has a shape in which the back side is opened.

  An input arm 238 that rotates in synchronization with the tilt of the grain discharge lever 155 is provided at the right end of the lever fulcrum shaft 235 inserted into the lever box 233. The input arm 238 of the lever fulcrum shaft 235 is connected to a relay arm 239 provided on the front side of the right end of the relay fulcrum shaft 237 via a connecting plate 240. An output arm 241 protrudes rearward from the rear end of the right end of the relay fulcrum shaft 237, and the rear end of the output arm 241 is connected to the upper end of the clutch rod 232.

  The operator tilts the grain discharge lever 155 up and down to rotate the input arm 238 in accordance with the rotation of the lever fulcrum shaft 235, and the rotation operation of the input arm 238 is relayed via the connecting plate 240. This is transmitted to the arm 239. Then, the rotation operation of the relay arm 239 rotates the output arm 241 via the relay fulcrum shaft 237, and moves the clutch rod 232 up and down. Therefore, when the operator tilts the grain discharge lever 155, the auger clutch 156 is moved up and down together with the clutch rod 232, and the power transmission of the engine 7 to the grain discharge conveyor 8 is interrupted.

  As shown in FIGS. 10 to 13 and the like, the Glen tank 6 is fitted with a shaft body (not shown) that protrudes from the rear upper surface of the traveling machine body 1 on the lower side of the transfer case 167 fixed to the rear surface of the Glen tank 6. The shaft body is configured to be rotatable so that the front of the grain tank 6 can be opened and closed in the left and right directions. In addition, the storage guide body 242 is integrally fixed to the upper surface side of the traveling machine body 1, and the sliding body 243 as an entrance / exit guide body is integrally fixed to the lower end side of the shaft support plate body 163. The lower end side of the sliding body 243 is slidably brought into contact with the upper surface, and the front part of the Glen tank 6 is supported on the traveling machine body 1 via the sliding body 243.

  The glen tank 6 has a transverse feed auger 160 disposed at the bottom in the front-rear direction, an outboard bottom plate 6 a and an inboard bottom plate 6 b provided at the bottom of the glen tank 6, and the outboard bottom plate 6 a and the inboard bottom plate facing the transverse feed auger 160. 6b is inclined and the grain inside the glen tank 6 flows down in the direction of the transverse feed auger 160. The tool box 250 is suspended and fixed below the machine-side bottom plate 6a, while the hydraulic valve unit 60 placed on the traveling machine body 1 is arranged below the machine-side bottom plate 6b. Therefore, when opening and closing the Glen tank 6, not only can the tool box 250 be moved with the rotation of the Glen tank 6, but the hydraulic valve unit 60 does not hinder the opening and closing operation of the Glen tank 6.

  In addition, a lock plate 244 is fixed to the front right side surface of the Glen tank 6, a lock arm 245 is provided on the lock plate 244, and a tank support frame body 223 is projected from the right side surface of the threshing portion 9 to the right side to A lock pin 247 is provided at the right end of the support frame body 223, and the lock arm 245 is detachably engaged with the lock pin 247 so that the glen tank 6 is supported at the harvesting work position. Further, the lock release lever 249 is connected to the lock arm 245 via the lock release rod 248, and the lock arm 245 is detached from the lock pin 247 by the lock release lever 249 disposed on the lower right side of the front surface of the glen tank 6.

DESCRIPTION OF SYMBOLS 1 Traveling machine body 3 Cutting part 5 Driver's cab 6 Glen tank 6a Machine outer bottom plate 6b Machine inner bottom plate 7 Engine 8 Grain discharge conveyor 9 Threshing part 145 Engine room frame 146 Engine room 147 Engine room column 148 Back plate 155 Grain discharge lever 156 auger clutch 157 auger drive belt 158 auger drive shaft 159 bevel gear mechanism 160 lateral feed auger 161 bevel gear mechanism 162 vertical feed auger 163 bevel gear mechanism 164 grain discharge auger 170 wind tunnel case 171 open / close fulcrum shaft 172 upper horizontal frame 173 seat base 174 back cover Body 175 fulcrum bracket 176 tension arm fulcrum shaft 177 tension arm 178 tension pulley shaft 179 shaft support plate body 231 tension spring 232 clutch rod 233 lever box 234 Gear lever 235 Lever fulcrum shaft 236 Support fulcrum bracket 237 Relay fulcrum shaft 238 Input arm 239 Relay arm 240 Connecting plate 241 Output arm 242 Storage guide body 243 Slider 244 Lock plate 245 Lock arm 247 Lock pin 248 Lock release rod 249 Lock release Lever 250 Tool box

Claims (5)

A combine equipped with a traveling machine body mounted with an engine, a glen tank with a bottom conveyor, an input case provided on the front side of the glen tank facing the engine, and a discharge conveyor provided on the rear side of the glen tank on the opposite side In
A structure in which a discharge conveyor driving belt is stretched between a tension pulley between the engine and an input pulley of the input side case;
The tension pulley is supported by an engine room frame that houses the engine via a tension arm, and a clutch operation unit that swings the tension arm is installed on the engine room frame and behind the driver seat. Combine that is characterized by that.   The combine according to claim 1, wherein the clutch operation unit is arranged in parallel with a conveyor operation unit that operates a turning operation of the discharge conveyor. The driver seat rear area in the engine room frame is covered with a cover body,
The combine according to claim 1 or 2, wherein the clutch operating section is installed on the upper surface of the cover body.   The combiner according to claim 3, wherein an air cleaner connected to a fresh air introduction side to the engine is disposed above the engine and behind the driver seat, and the cover body covers the air cleaner. The engine room frame has a pair of engine room columns at a position between the Glen tank and the engine,
The combine according to any one of claims 1 to 4, wherein the tension arm is pivotally supported on the engine room column outside the machine through a fulcrum bracket.

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