WO2018179585A1

WO2018179585A1 - Combine harvester

Info

Publication number: WO2018179585A1
Application number: PCT/JP2017/042864
Authority: WO
Inventors: 乙倉　進; 和田　俊郎
Original assignee: ヤンマー株式会社
Priority date: 2017-03-30
Filing date: 2017-11-29
Publication date: 2018-10-04
Also published as: JP2018166489A; JP6827356B2

Abstract

According to the present invention, a shaking separator plate 26 has attached thereto: a shielding plate 192 that hangs above a front part of a second conveyor mechanism 31 in an orientation extending from a first grain flow plate 191; and a guide rail 196 elongated to the right and left in front of the shielding plate 192. The rear end side of a grain sieve 176 is supported by the guide rail 196. The front end side of the grain sieve 176 is coupled to the rear end side of a grain pan 173.

Description

Combine

The present invention relates to a combine that harvests grain by harvesting grain weeds planted in a field.

Heretofore, in the combine, there is known a technology in which the gren sheave can be put in and out from the side of the threshing part so that the gren sheave for the first thing selection in the rocking sorter can be used according to the type of grain. (For example, refer patent document 1 grade | etc.,).

Patent No. 3143385 gazette

However, according to the configuration of the prior art, a pair of front and rear dedicated guide rails for guiding the in and out of the gren sheaves are provided bridging over the left and right inner side surfaces of the rocking sorter and positioned on either the rocking sorter or the gren sheave There is a room for improvement in that the number of parts is increased, and high assembly accuracy is also required in manufacturing, since the engagement projection for alignment is provided and the other is formed with the engagement hole for alignment. was there.

This invention makes it a technical subject to provide the combine which improved and examined the above present condition.

The present invention is provided with a swing and sorter for specific gravity sorting of grain after threshing, a first conveyor mechanism for transporting the first item, and a second conveyor mechanism for transporting the second product, and the first conveyor mechanism And the second conveyor mechanism, the first grain board extending rearward and obliquely upward is disposed, and the rocking sorter is provided with a glenpan for rocking and transporting the grain after threshing, and a gimlet In the combine provided with a grain sieve for sorting, a shielding plate is provided on the front side of the second conveyor mechanism in a posture extending from the most recent grain plate, and the shielding plate is attached to the rocking sorting plate A laterally long guide rail is attached to the front side more than the front side, the rear end side of the gren sheave is supported by the guide rail, and the front end side of the gren sheave is connected to the rear end side of the glen pan.

In the combine according to the present invention, the side plate opening through which the gren sheave can pass may be formed in the side plate of the threshing part, and the gren sheave may be configured to be able to be taken in and out from the side plate opening of the side plate.

In the combine of the present invention, the front end upper surface side of the glen sheave may be overlapped on the rear end lower surface side of the glen pan to fasten the overlapping portion.

According to the present invention, the first conveyor is provided with a swing and sorter for gravity-sorting the grain after threshing, a first conveyor mechanism for transporting the first item, and a second conveyor mechanism for transporting the second product. Between the mechanism and the second conveyor mechanism, a most upstream grain plate extending obliquely rearward and upward is disposed, and the rocking sorter is provided with a grain pan for rocking and transporting the grain after threshing, and In the combine provided with a grain sieve for sorting objects, a shielding plate is installed on the front of the second conveyor mechanism in a posture extending from the most recent grain plate, and the shielding plate is attached to the rocking sorting plate A laterally long guide rail is attached to the front side of the plate, the rear end side of the gren sheave is supported by the guide rail, and the front end side of the gren sheave is connected to the rear end side of the glen pan Before The mounting structure of Gurenshibu can be simplified than that of the prior art. It is not necessary to extremely increase (gravely adjust) the assembling accuracy of the above-mentioned grain sieve to the above-mentioned rocking sorting board, and the cost can be reduced and the productivity can be improved.

It is a left view of a combine. It is a right side view of a combine. It is a top view of a combine. It is a drive systematic diagram of a combine. It is left side sectional drawing of a threshing part. FIG. 5 is an enlarged left side cross-sectional view around a grensee. FIG. 3 is a cross-sectional perspective view of the glen sheave as viewed from the lower left front side. It is a perspective view which shows the drive system of a threshing part.

An embodiment embodying the present invention will be described based on the drawings (FIGS. 1 to 8) in which the present invention is applied to an ordinary type combine (hereinafter simply referred to as a combine). First, the schematic structure of the combine will be described. In the following description, the left side in the forward direction of the traveling vehicle 1 is simply referred to as the left side, and the right side in the forward direction is simply referred to as the right side.

As shown in FIGS. 1 to 3, the combine according to 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 of the traveling vehicle 1, a reaper 3 to be taken in while reaping uncut grain crates such as rice, wheat, soybeans or corn is mounted so that it can be moved up and down by a single acting hydraulic cylinder 4 for elevating There is.

On the left side of the traveling vehicle 1, a threshing unit 9 for carrying out a threshing process on the reaping grain fed from the reaping section 3 is mounted. In the lower part of the threshing unit 9, a grain sorting mechanism 10 for swinging sorting and wind sorting is disposed. On the front right side of the traveling vehicle 1, a driver's cab 5 as a control unit on which the operator gets is mounted. An engine 7 as a power source is disposed in the cab 5 (below the driver's seat 42). Behind the cab 5 (right side of the traveling vehicle 1), a grain tank 6 for taking grains from the threshing part 9 and a grain for discharging grains in the grain tank 6 toward a truck bed (or a container etc.) The discharge conveyor 8 is arranged. The grain discharging conveyor 8 is inclined outward, and the grains in the gren tank 6 are carried out by the grain discharging conveyor 8.

The reaper 3 includes a feeder house 11 in communication with a throttling opening 9 a at the front of the threshing part 9 and a grain header 12 in the form of a horizontally long bucket connected to the front end of the feeder house 11. The 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 of the take-up auger 13. A clipper-like cutting blade 15 is placed on the front of the grain header 12. The left and right side branch bodies 16 are protrusively provided on the left and right sides of the front of the grain header 12. Further, the feed conveyor 17 is installed in the feeder house 11. A beater 18 (front rotor) for feeding a reaping grain is provided on the feed end side (the throttling port 9a) of the feed 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 elevating hydraulic cylinder 4, and the reaper 3 reaps using the reaper input shaft 89 (feeder house conveyor shaft) described later as a elevating fulcrum It is moved up and down by the lifting hydraulic cylinder 4.

According to the above configuration, the tip end side of the uncut grain weir between the left and right weeds 16 is scratched by the scratching reel 14, the weir side of the uncut grain weir is cut away by the cutting blade 15, and the scratching auger 13 By the rotational drive, the reaper is collected near the entrance of the feeder house 11 near the center of the lateral width of the grain header 12. The whole amount of the reaper of the grain header 12 is conveyed by the feed conveyor 17 and is introduced into the throttling port 9 a of the threshing part 9 by the beater 18. A grain control hydraulic cylinder (not shown) for rotating the grain header 12 about the horizontal control fulcrum axis is provided, and the inclination of the grain header 12 in the left-right direction is adjusted by the above-mentioned hydraulic cylinder for horizontal control. 12, it is also possible to horizontally support the reaper 15 and the take-in reel 14 with respect to the scoop scene.

Further, as shown in FIGS. 1 to 5, the threshing drum 21 is rotatably provided in the throttling chamber of the threshing unit 9. The threshing drum 21 is pivotally supported by a threshing drum shaft 20 extended in the front-rear direction of the traveling vehicle 1. Under the threshing drum 21, a net 24 for leaking kernels is stretched. In addition, on the outer peripheral surface of the front portion of the threshing drum 21, a spiral screw blade intake blade 25 is provided to project radially outward.

According to the above-described configuration, the reaping grain hopper inserted from the throttling port 9a by the beater 18 is transported toward the rear of the traveling airframe 1 by the rotation of the threshing drum 21, and between the throttling drum 21 and the net 24 It is kneaded and threshed. De-graining such as grains smaller than the mesh of the receiving net 24 leaks from the receiving net 24. Scales and the like that do not leak from the receiving net 24 are discharged to the field from the dust outlet 23 at the rear of the threshing part 9 by the transport action of the threshing drum 21.

A plurality of dust transfer valves (not shown) pivotally connected to the upper side of the threshing cylinder 21 are provided to adjust the speed at which the grain is removed from the throttling chamber. By adjusting the angle of the dust transfer valve, it is possible to adjust the transport speed (residence time) of the grain removal in the throttling chamber according to the type and characteristics of the reaper. On the other hand, the grain sorting mechanism 10 disposed below the threshing part 9 includes a swing sorting board 26 for sorting with a specific gravity having a grain bread, a chaff sieve, a grain sieve, a straw rack, and the like.

In addition, as the grain sorting mechanism 10, a Karasori fan 29 for supplying sorting air to the rocking sorting board 26 is provided. The de-grained threshed by the threshing drum 21 and leaked from the net 24 is a grain (a first grain such as a fine grain) by the wind sorting action of the tangerine fan 29 with the specific gravity sorting action of the swing sorting disc 26. ), A mixture of grains and straws (a second thing such as a grain with a stem), and chips and the like to be sorted out and taken out.

As the grain sorting mechanism 10, the first conveyor mechanism 30 and the second conveyor mechanism 31 are provided on the lower side of the rocking sorting board 26. Grains (one piece) dropped from the rocking and sorting board 26 by the sorting of the rocking and sorting board 26 and the tangerine fan 29 are collected in the grain tank 6 by the first conveyor mechanism 30 and the grain-raising conveyor 32. The mixture of grain and straw (secondary material) is returned to the sorting start end side of the rocking sorting disc 26 via the No. 2 conveyor mechanism 31 and the No. 2 reducing conveyor 33 etc. and resorted by the rocking sorting disc 26 Ru. Scales and the like are configured to be discharged to the field from the dust outlet 23 at the rear of the traveling airframe 1.

Further, as shown in FIG. 1 to FIG. 3, the driver's cab 5 is provided with a control column 41 and a driver seat 42 on which the operator can sit. The control column 41 includes an accelerator lever (not shown) for adjusting the rotational speed of the engine 7, a control handle 43 for changing the course of the traveling vehicle 1 by the rotation operation of the operator, and a main for switching the moving speed of the traveling vehicle 1 Shift lever 44 and auxiliary shift lever (not shown), reaping clutch lever (not shown) for driving or stopping reaper 3 and threshing clutch lever (not shown) for driving or stopping threshing part 9 are arranged. ing. In addition, a roof 49 for sun protection is attached to a front upper surface side of the glen tank 6 via a sun visor support 48, and the roof 49 for sun protection is configured to cover the upper side of the driver's cab 5.

As shown in FIGS. 1 and 2, the left and right track frames 50 are disposed on the lower surface side of the traveling airframe 1. The track frame 50 includes a drive sprocket 51 for transmitting the motive power of the engine 7 to the crawler belt 2 as a traveling unit, a tension roller 52 for maintaining the tension of the crawler belt 2, and a plurality of tracks for holding the ground side of the crawler belt 2 in a grounded state. A roller 53 and an intermediate roller 54 for holding the non-grounded side of the crawler belt 2 are 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-grounded side of the crawler belt 2 is supported by the intermediate roller 54 Configure to

Next, the detailed structure of the threshing unit 9 will be described with reference to FIGS. 4 to 8 and the like. As shown in FIG. 4, the threshing unit 9 includes a threshing drum 21 for threshing grain, a rocking sorting board 26 for rocking and sorting particles shed falling below the threshing drum 21, and a balustrade fan for wind sorting. It has 29 and. The front side of the threshing drum 21 is exposed to a throttling port 9 a communicating with the feeder house 11. The rear side of the threshing drum 21 faces a dust outlet 23 formed on the rear side of the threshing portion 9. Below the threshing drum 21, a net 24 for making grains leak is stretched. In the embodiment, the rear side of the threshing drum 21 protrudes further rearward than the rear end of the mesh 24. The rear lower side of the threshing cylinder 21 (the opening without the mesh 24) is a dust outlet 23. The rotational axis of the threshing cylinder 21 extends along the traveling direction (front-rear direction) of the traveling body 1. The cropping grain crucible entirely fed from the reaper 3 through the feeder house 11 and the beater 18 to the throttling port 9a of the threshing apparatus is threshed by the threshing drum 21.

The rocking / sorting plate 26 located below the mesh 24 is configured to be capable of reciprocatingly rocking forward and downward obliquely and rearwardly obliquely upward through the rocking link 172. The rocking and sorting plate 26 includes a grain pan 173 located below the front of the mesh 24, a chaff sieve 174 for controlling the amount of grain leakage, a grain sieve 176 disposed between the chaff sieve 174 and the first conveyor mechanism 30, and A straw rack 177 connected to the rear end side of the chaff sieve 174 is provided. The Tangdon fan 29 disposed below the grenpan 173 is configured to blow the grit sheave 176 and the chaff sheave 174 upward from below and blow the sorted air toward the dust collector 23 on the rear side of the threshing portion 9.

The threshed matter threshed by the threshing drum 21 and dropped from the net 24 is sent to the rear chaff sieve 174 while falling on the grain pan 173 of the rocking sorting disc 26 that oscillates back and forth and being subjected to specific gravity sorting. The agglomerated matter on the chaff sieve 174 is subjected to specific gravity selection with the chaff sieve 174 itself, and is subjected to the sorting wind flowing backward from the tangerine fan 29 and separated into grains and scraps.

The grains (first particles) dropped from the chaff sieve 174 and the grain sieve 176 are collected in the first conveyor mechanism 30 while dust in the grain is removed by the selection fan of the fan. The grain removed from the first conveyor mechanism 30 is carried into and collected by the grain tank 6 via the grain raising conveyor 32. Seconds which can not pass through the chaff sieve 174 and the gren sheave 176 and secondaries dropped from the rear of the chaff sieve 174 are collected in the second conveyor mechanism 31 which is the most backward of the conveyor mechanism 30. The second products collected by the second conveyor mechanism 31 are returned to the upper surface side of the swinging sorting board 26 via the second reduction conveyor 33 and re-sorted. The relatively heavy shavings on the chaff sieve 174 pass over the straw rack 177 and are discharged from the dust outlet 23 to the outside of the machine.

Next, the drive structure of the combine will be described with reference to FIGS. 3 and 4 and the like. A transmission case 63 is provided with a linear hydraulic continuously variable transmission 64 for traveling transmission having a linear pump and a linear motor. The engine 7 is mounted on the upper right side of the front of the traveling vehicle 1, and the transmission case 63 is disposed on the front of the traveling vehicle 1 on the left of the engine 7. An output shaft 65 protruding leftward from the engine 7 and a transmission input shaft 66 protruding leftward from the transmission case 63 are connected via an engine output belt 67, an engine output pulley 68 and a transmission input pulley 69. There is. In addition, a work unit charge pump 59 for driving the lifting hydraulic cylinder 4 and the like and a cooling fan 149 are disposed in the engine 7, and the work unit charge pump 59 and the cooling fan 149 are driven by the engine 7.

In addition, a swing hydraulic continuously variable transmission 70 for steering having a swing pump and a swing motor is provided in the transmission case 63, and the linear hydraulic continuously variable transmission 64 and the swing hydraulic continuously variable transmission via the transmission input shaft 66 The output of the engine 7 is transmitted to the 70, while the output of the linear hydraulic stepless transmission 64 and the turning hydraulic stepless transmission 70 is output controlled by the steering handle 43, the main shift lever 44 and the sub shift lever, The left and right crawler belts 2 are driven via the hydraulic continuously variable transmission 64 and the turning hydraulic continuously variable transmission 70 so as to travel and move in a field or the like. In the embodiment, the straight and swing hydraulic continuously

variable transmissions

64 and 70 are disposed on the upper right side of the transmission case 63.

Furthermore, a threshing drum drive case 71 is provided that pivotally supports the front end side of the threshing drum shaft 20 (see FIGS. 4 and 5). A threshing drum drive case 71 is disposed on the front side of the threshing unit 9. A threshing cylinder input shaft 72 for driving the reaper 3 and the throttling cylinder 21 is pivotally supported by the threshing cylinder drive case 71. Moreover, the main counter shaft 76 (1st counter shaft) as a fixed rotating shaft penetrated to the right and left of the threshing part 9 is provided. A work 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 an output shaft 65 of the engine 7 via a threshing clutch 84 which also serves as a tension roller and a working unit drive belt 85.

In front of the threshing drum 21, a threshing drum input shaft 72 extended in the lateral direction of the traveling machine body 1, a beater 18 disposed in the lateral direction of the traveling vehicle body 1, and a mowing input shaft extended in the lateral direction of the traveling vehicle body 1 89 is provided. A threshing drum drive

pulley

86, 87 and a threshing drum drive belt 88 are provided as a threshing drum input mechanism 90 for transmitting the driving force of the main counter shaft 76 to the threshing drum input shaft 72, and the driving force from the engine 7 is transmitted A threshing drum input mechanism 90 (threshing drum drive pulleys 86 and 87 and a threshing drum drive belt 88) is disposed at one end of the counter shaft 76 on the engine 7 side, and the throttling drum 21 is rotationally driven at a constant rotation output of the engine 7 It is configured as follows.

A beater drive mechanism and a reaper drive mechanism for transmitting the driving force of the main counter shaft 76 to the beater shaft 82 and the reaper input shaft 89 are provided on the other end side of the main counter shaft 76. Further, the sub counter shaft 104 (second counter shaft) is disposed between the beater shaft 82 and the main counter shaft 76, and the power relay pulleys 105 and 106 provided on the main counter shaft 76 and the sub counter shaft 104 A power relay belt 113 is wound to constitute a power relay mechanism for transmitting power to the reaper drive mechanism.

A reaper drive belt 114 is wound around reaper drive pulleys 107 and 108 provided on the sub-countershaft 104 and the beater shaft 82, respectively, to constitute a beater drive mechanism. Then, the reaper drive belt 114 is stretched by a reaper clutch 109 (tension device) which also serves as a tension roller, whereby the rotational power from the engine 7 transmitted to the main counter shaft 76 is a power relay mechanism and a beater drive mechanism. Is input to the beater shaft 82. In addition, the reaper drive mechanism is configured to transmit the reaper drive force from the engine 7 to the reaper input shaft 89 via a reaper drive chain 115 and

sprockets

116 and 117 from a beater shaft 82 on which the beater 18 is pivotally supported. ing. Thus, the reaper 3 is driven to rotate at a constant rotational output of the engine 7 together with the beater 18.

The limp shaft 100, which is the rotational axis of the limp fan 29, has a hollow tubular shape, and a main counter shaft 76 is inserted in the hollow portion of the limp shaft 100. That is, the main counter shaft 76 and the tang shaft 100 have a double shaft structure, and the main counter shaft 76 and the tang shaft 100 are rotatably supported relative to each other. The main counter shaft 76 and the balustrade shaft 100 extend laterally on the front side of the threshing portion 9. The sub counter shaft 104 extends in parallel with the main counter shaft 76 and the tang shaft 100 at the front of the main counter shaft 76 (the tang shaft 100).

A tang driving belt 103 is wound around tangling drive pulleys 101 and 102 provided on the sub counter shaft 104 and the tangling shaft 100, respectively, to constitute a tang driving mechanism. Accordingly, while the rotational power from the engine 7 transmitted to the main counter shaft 76 is input to the beater shaft 82 through the power relay mechanism, the rotational power is input to the tango fan 29 via the tangling drive mechanism, and the tangling fan 29 is The motor 7 is driven to rotate at a fixed rotation output of the engine 7.

Furthermore, the cutting support frame 36 is installed on the front upper surface side of the threshing unit 9. A cutting bearing body (not shown) is attached to the front right side of the cutting support frame 36, and a forward / reverse switching case 121 is attached to the front left side of the cutting support frame 36. A horizontally long reaping input shaft 89 is rotatably supported on the front side of the reaping support frame 36 via the reaping bearing and the forward / reverse switching case 121. A beater shaft 82 (beater 18), which is directed to the left and right, is rotatably supported inside the cutting support frame 36 via a beater bearing. Further, the threshing cylinder drive case 71 is mounted on the upper surface side of the cutting support frame 36, and the threshing cylinder input shaft 72 is axially supported by the threshing cylinder drive case 71.

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

In addition, a threshing 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 of the threshing cylinder input shaft 72 It is transmitted to the department. The threshing drum input shaft 72 provided on the front side of the threshing portion 9 is disposed in the left-right direction of the traveling machine body 1, and the threshing cylinder 21 is pivotally supported by the threshing barrel shaft 20 disposed in the front-rear direction of the traveling machine body 1. The front end side of the threshing drum shaft 20 is connected to the left and right other end portions of the threshing drum input shaft 72 opposite to the engine 7 via a bevel gear mechanism 75. The driving force of the engine 7 is transmitted to the grain sorting mechanism 10 for sorting the grain after threshing and the reaper 3 from the left and right other ends of the main counter shaft 76 on the opposite side to the engine 7.

That is, the right end of the threshing drum input shaft 72 is connected to the right end of the main counter shaft 76 near the engine 7 via the threshing drum drive pulleys 86 and 87 and the threshing drum drive belt 88. The front end side of the threshing drum shaft 20 is connected via the bevel gear mechanism 75 to the left end of the threshing drum input shaft 72 extended in the left-right direction. The power of the engine 7 is transmitted from the right end of the main counter shaft 76 to the front end side of the threshing drum shaft 20 via the threshing drum input shaft 72, and the throttling drum 21 is rotationally driven in one direction. On the other hand, the driving force of the engine 7 is transmitted from the left end of the main counter shaft 76 to the grain sorting mechanism 10 and the reaper 3 disposed below the threshing part 9.

Furthermore, the left end of the first conveyor shaft 77 in the first conveyor mechanism 30 and the left end of the second conveyor shaft 78 in the second conveyor mechanism 31 via the conveyor drive belt 111 to the left of the main counter shaft 76. The ends are connected. The left end of the second conveyor shaft 78 is connected to the left end of a crank-like swinging drive shaft 79 pivotally supported at the rear of the swing sorting disc 26 via a swing sorting belt 112. That is, the threshing clutch 84 is controlled to be turned on and off by the threshing clutch lever operation of the operator. Each part of the grain sorting mechanism 10 and the threshing drum 21 are driven by the entry operation of the threshing clutch 84.

In addition, the grain conveyor 32 is driven via the conveyor shaft 77 first, and the grain sorted first of the conveyor mechanism 30 is collected in the grain tank 6. Further, the No. 2 reduction conveyor 33 is driven via the No. 2 conveyor shaft 78, and the No. 2 sorted grain (the second thing) in which the scale waste of the No. 2 conveyor mechanism 31 is mixed is the upper surface side of the rocking sorting board 26 Will be returned to

As shown in FIG. 4 and FIG. 5, it has a reaper input shaft 89 as a conveyor input shaft pivotally supporting the feed end side of the supply conveyor 17. A header drive shaft 91 is rotatably supported on the back side of the right side of the grain header 12. The left end of the forward / reverse transmission shaft 122 is connected to the left end of the beater shaft 82 via the reaper drive chain 115 and the

sprockets

116 and 117, and the reaper input shaft 89 is forward / reverse transmission via the forward / reverse switching case 121 It is connected with the shaft 122. The right end of the reaper 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. The pick-up shaft 93 is provided to support the pick-up auger 13. An intermediate portion of the header drive shaft 91 is connected to the right side portion of the scratching shaft 93 via the scratching drive chain 92.

In addition, a reel shaft 94 for supporting the take-in reel 14 is provided. The right end of the take-in shaft 93 is connected to the right end of the reel shaft 94 via the intermediate shaft 95 and the

reel drive chains

96 and 97. The cutting blade 15 is connected to the right end of the header drive shaft 91 via a cutting blade driving crank mechanism 98. The feed conveyor 17, the take-in auger 13, the take-in reel 14 and the cutting blade 15 are drive-controlled by the turning on and off operation of the reaper clutch 109, so that the tip side of the uncut grain weirs in the field is continuously taken away ing.

A forward rotation bevel gear 124 integrally formed on the forward / reverse transmission shaft 122, a reverse rotation bevel gear 125 rotatably supported on the reaper input shaft 89, and an intermediate bevel gear 126 connecting the reverse rotation bevel gear 125 to the forward rotation bevel gear 124 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 by spline engagement on the reaper input shaft 89 in a slidable manner. The slider 127 is configured to be engageable with the bevel gear 124 for forward rotation 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 reverse clutch 129. It is configured to be releasably engageable.

In addition, a forward / reverse switching shaft 123 for sliding operation of the slider 127 is provided, a forward / reverse switching arm 130 is provided on the forward / reverse switching shaft 123, and the forward / reverse switching arm 130 is operated by forward / reverse switching lever (forward / reverse operation tool) operation. It is swung to rotate the forward / reverse switching shaft 123, and the slider 127 is brought into contact with or separated from the forward rotation bevel gear 124 or the reverse rotation bevel gear 125, and the forward rotation bevel gear 124 or for reverse rotation The slider 127 is selectively locked to the bevel gear 125, and the reaper input shaft 89 is connected to the forward and reverse transmission shaft 122 in a forward or reverse connection.

The right end of the auger drive shaft 158 is connected to the output shaft 65 of the engine 7 via the tension pulley pulley auger clutch 156 and the auger drive belt 157. The front end side of the lateral feed auger 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 vertical feed auger 162 of the grain discharging conveyor 8 is connected to the rear end side of the cross feed auger 160 via the bevel gear mechanism 161, and the grain of the grain discharge conveyor 8 is loaded on the upper end side of the vertical feed auger 162 via the bevel gear mechanism 163. The particle discharge auger 164 is connected. Although not shown in detail, a grain discharging lever for turning on and off the auger clutch 156 is attached to the front of the gren tank 6 behind the driver seat 42 and the operator operates the grain discharging lever from the driver seat 42 side. It is possible to configure.

Next, referring to FIGS. 5 to 8, the structure around the grensee 176 will be described. The rocking sorting disc 26 according to the embodiment has a substantially rectangular frame shape in a plan view, and a grain pan 173, a chaff sieve 174, a grain sieve 176, and a straw rack 177 are provided inside the frame portion. The glen pan 173 according to the embodiment is divided into upper and lower two stages, and the front end side of the lower glen pan 173 b is continuously provided on the lower surface side of the front and rear middle portion of the upper glen pan 173 a. The chaff sieve 174 is located behind the upper glenpan 173a, and the glensheave 176 is located behind the lower glenpan 173b and below the midway portion of the chaff sieve 174.

The first conveyor mechanism 30 for transporting the first object is located below the grain sieve 176. Below the rear of the chaff sieve 174 is a second conveyor mechanism 31 for transporting a second. The first conveyor mechanism 30 and the second conveyor mechanism 31 are arranged in the back and forth direction below the swinging sorter 26. Between the first conveyor mechanism 30 and the second conveyor mechanism 31, a most downstream grain plate 191 extending diagonally upward is disposed.

A shielding plate 192 is attached to the rocking sorting plate 26 so as to cover the front upper portion of the second conveyor mechanism 31 in a posture extending rearward and upward from the most upstream grain plate 191. The shielding plate 192 is for preventing the crushed material falling from the chaff sieve 174 from passing over the most recent grain plate 191 and falling to the second conveyor mechanism 31.

In the embodiment, a hanging bracket 193 protruding downward is fixed to the outer surface side of the left and right side plates 26 a in the rocking sorting disc 26. Upward mounting pieces 194 are provided on the left and right ends of the shielding plate 192. By fastening the upward attachment pieces 194 of the corresponding shielding plates 192 to the left and right suspension brackets 193 on the swing sorting plate 26 side, the shield plates 192 are fixed to the rear of the grain sieve 176 in the swing sorting plate 26 .

The upper end side of the guide rubber sagging 195 is attached to the shielding plate 192 at the very end. The first guide rubber sagging 195 is placed on the top surface side of the most recent grain plate 191. Droplets (first objects) dropped on the shield plate 192 and the first guide rubber sagging 195 roll down along the inclined surface of the first guide rubber sagging 195 and are collected first in the conveyor mechanism 30.

On the front side of the shield plate 192 in the rocking sorting board 26, a laterally long guide rail 196 is attached. The guide rail 196 supports the rear end side of the grain sieve 176. The front end side of the glen sieve 176 is connected to the rear end of the glen pan 173 (in this case, the lower glen pan 173 b).

The guide rail 196 in the embodiment is L-shaped in cross section, and provided so as to bridge the front side of the left and right upward mounting pieces 194 in the shielding plate 192. A locking piece portion 176a bent downward is formed on the rear end side of the grain sieve 176. The rear end of the glen sheave 176 is placed on the guide rail 196, and the engaging piece 176a on the rear end of the glen sheave 176 is engaged with the vertical piece portion 196a of the guide rail 196 from above. The side is kept forward immovable and immovable. Further, the top end side of the front end of the grain sieve 176 is superposed on the bottom side of the rear end of the lower grain pan 173b, and the overlapping portion is fastened with a bolt and a nut.

In addition, on the inner surface side of the left and right side plates 26a in the rocking sorting disc 26, a projecting bracket 197 projecting inward in the left and right direction is fixed in the vicinity of the guide rail 196. With the rear end side of the grain sieve 176 mounted on the guide rail 196, the left and right sides of the rear side of the grain sieve 176 are fastened to the left and right overhang brackets 197 by bolts and nuts.

Thus, the horizontally long guide rails 196 are attached to the front side of the shielding plate 192, and the guide rail 196 supports the rear end side of the glen sheave 176, and the front end of the gren sheave 176 is behind the glen pan 173 (lower glen pan 173b) When connected to the end side, the mounting structure of the grain sieve 176 to the rocking disc 26 can be simpler than that of the prior art. It is not necessary to extremely increase (correctly adjust) the assembling accuracy of the grain sieve 176 with respect to the rocking sorting plate 26, and cost reduction and productivity improvement can be achieved.

Further, in the embodiment, since the front end upper surface side of the grain sieve 176 is superimposed on the lower surface side of the trailing edge of the glen pan 173 (lower glen pan 173 b) and the overlapping portion is fastened, the glen pan 173 (lower glen pan 173 b) and the glen sheave 176 Accumulation and clogging of grains, dust and the like can be prevented with a simple configuration at the connection point of the above.

In the left side plate 198 L (lateral side plate) of the threshing unit 9, a left side plate opening 199 is formed at a position corresponding to the grain sieve 176. The left side plate opening 199 is a long window hole long back and forth to such an extent that the grain sieve 176 can pass. The left side plate opening 199 is formed for attachment / removal of the grain sieve 176, internal inspection, maintenance and the like. The grain sieve 176 can be taken in and out from the left side plate opening 199. The left side plate opening 199 is normally closed by the left lid cover 200 so as to be openable and closable. The left lid cover 200 is detachably fastened to the peripheral edge of the left side plate opening 199 by a bolt.

The left side plate 198L of the threshing part 9 is attached to a plurality of vertical columns 201 standing on the traveling body 1 and constituting the framework of the threshing part 9, but the location of the vertical column 201 near the center of the front and rear is the left side plate opening It overlaps with 199 points. For this reason, in the embodiment, the vertical column 201 near the center in the front and rear direction is divided into three upper and lower columns 201a to 201c, and the middle column 201b can be detachably attached to the upper and

lower columns

201a and 201c. It is bolted. After loosening the bolt that fixes the middle column body 201b and removing the middle column body 201b, if the bolt that fixes the left lid cover 200 is loosened and the left lid cover 200 is removed, the grain sieve 176 appears in the left side plate opening 199 It will be. By putting a hand through the left side plate opening 199, it is possible to attach and remove bolts and nuts on the left and right sides of the grain sieve 176.

On the other hand, on the right side plate 198R of the threshing part, right and left side plate openings 202 are formed at two positions corresponding to the front end side and the rear end side of the grain sieve 176. Each right side plate opening 202 is normally closed by the right lid cover 203 so as to be openable and closable. Each right lid cover 200 is detachably fastened to the periphery of the corresponding right side plate opening 202 by a bolt. When attaching and detaching a bolt and a nut at the right front of the grain sieve 176, the bolt of the front right cover 203 is loosened and the front right cover 203 is removed. When attaching and detaching the bolt and nut at the right rear of the grain sieve 176, the bolt of the rear right cover 203 is loosened and the rear right cover 203 is removed.

In this manner, the left side plate opening 199 through which the grain sieve 176 can pass is formed in the left side plate 198L of the threshing part 9, and the grain sieve 176 can be taken in and out from the left side plate opening 199 of the left side plate 198L. The installation and removal of the grain sieve 176 can be easily carried out with the grain bundle 26 itself mounted in the threshing part 9. The number of assembling steps of the grain sieve 176 can also be reduced.

The configuration of each part in the present invention is not limited to the illustrated embodiment, and various changes can be made without departing from the spirit of the present invention.

DESCRIPTION OF SYMBOLS 1 driving | running | working body 9 threshing part 10 grain sorting mechanism 11 feeder house 18 beater (front rotor)
26 shaking sorting board 26a left and right side plates 173 glen pan 173a upper glen pan 173b lower glen pan 174 chaff sieve 176 glen sheave 176a locking piece 191 most-flowing grain plate 192 shielding plate 196a vertical piece 198L left plate 198R right plate 199 left plate opening 200 Left lid cover

Claims

It has a rocking and sorting board for specific gravity sorting of grain after threshing, a first conveyor mechanism for transporting the first product, and a second conveyor mechanism for transporting the second product, and the first conveyor mechanism and the second robot mechanism. Between the conveyor mechanism, a most upstream grain plate extending obliquely rearward and upward is disposed, and the rocking sorting board is provided with a gren pan for rocking and transporting the grain after threshing, and a gren sheave for the grit sorting. In the combine that provides
Attach a shielding plate to the upper part of the front of the second conveyor mechanism in a posture extending from the most recent grain plate, and attach a horizontally long guide rail on the front side of the shielding plate to the swing sorting plate The guide rail supports the rear end side of the glen sheave, and the front end side of the glen sheave is connected to the rear end side of the glen pan;
Combine.
The side plate opening through which the gren sheave can pass is formed in the side plate of the threshing part, and the gren sheave is configured to be able to be taken in and out from the side plate opening of the side plate.
The combine according to claim 1.
The front end upper surface side of the glen sheave is overlapped on the rear end lower surface side of the glenpan, and the overlapping portion is fastened.
The combine according to claim 2.