JP2005102556A - Threshing part of combine harvester - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a threshing part of a combine harvester, with which spaces (intervals) of threshing teeth of a threshing cylinder, a receiving net and a net presser on this side are adjusted and unthreshed grain straws are reduced and threshing precision and efficiency are improved. <P>SOLUTION: In the threshing part of a combine harvester, with which a threshing chamber 21 of the threshing part 20 is equipped with the threshing cylinder 22 having the threshing teeth 22a and the receiving net 23 is arranged in the lower circumference of the threshing cylinder 22, a fitting part is formed at the end part of the feed chain 9 side of the receiving net 23, a stationary plate 306 is fixed on a bracket 305 for supporting the end part of the receiving net 23 at a machine body side, the stationary plate 306 is fitted to the fitting part, a shim 309 is laid between the stationary plate 309 and the bracket 305 and the position of the stationary plate 306 is adjusted by increasing and decreasing the shim 309. <P>COPYRIGHT: (C)2005,JPO&NCIPI

Description

  The present invention relates to a structure of a threshing portion of a combine, and particularly relates to a receiving net disposed below a handling cylinder of the threshing portion and a structure around it.

  Conventionally, in a combine, cereals harvested by a mowing unit are conveyed by a conveying device and supplied to a threshing unit having a handling cylinder. And in this threshing part, threshing is performed by rotation of the handling cylinder in which many teeth are planted, and the waste after threshing is discharged to the rear of the machine body. On the other hand, under the handling cylinder, a receiving net configured in a semicircular shape in front view is disposed so as to cover the lower periphery of the handling cylinder, and grains, swarf, dust, etc. leaked from the receiving net are It is sorted by the sorting unit arranged below the threshing unit, among which the sawdust and garbage etc. are discharged from the rear of the machine body, and the refined grains are stored in the Glen tank arranged on the side of the threshing unit It is configured.

In the threshing section as described above, a front net presser for positioning and positioning the side end of the receiving net so as not to warp is provided on the side of the receiving net and on the feed chain side.
In the threshing portion, a plurality of protruding members and bar members are attached to the receiving net and the front net presser arranged around the handling cylinder in parallel to the rotation direction of the handling cylinder. Improve the threshing performance by devising the arrangement and shape of the protrusions attached to the shell, or by wrapping the rotation trajectory between the protrusions and the teeth of the handle barrel to reduce unhandled residue in the threshing part Techniques for achieving this are known (for example, see Patent Documents 1 and 2).

JP 2001-161154 A JP 2001-169648 A

By the way, if the gap (interval) between the teeth of the handle cylinder and the receiving net and the front net presser in the threshing part of the combine is wide, unhandled residue will occur, and conversely, if it is too narrow, the chopping will occur. It is closely related to unhandled and threshing performance in the department. Therefore, in order to reduce unhandled waste and improve threshing accuracy and efficiency, it is desirable to be able to adjust the clearance between the tooth handling of the barrel, the receiving net and the front net presser. However, the receiving net disposed in the threshing part of the conventional combine as described above is not configured to be position-adjustable, and the front net presser is fixed to the frame or the like on the main body side by bolts or the like. It has become.
Therefore, in the present invention, in the threshing portion of the combine, the clearance (interval) between the tooth handling of the barrel and the receiving net and the front net presser can be adjusted to reduce unhandled residue and improve the threshing accuracy and efficiency. Plan.

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

  That is, in claim 1, in the threshing part of the combine that includes a handling cylinder having teeth on the handling chamber of the threshing part and arranges the receiving net around the lower part of the handling cylinder, the feed chain side end of the receiving net The fixing member is fixed to a bracket that supports the end of the receiving net on the machine body side, the fixing member can be fitted to the fitting portion, and the position of the fixing member can be adjusted. It is configured.

  According to a second aspect of the present invention, a shim is interposed between the fixing member and the bracket, and the position is adjusted by increasing or decreasing the shim.

  In claim 3, the handling chamber of the threshing portion is provided with a handling cylinder having teeth, a receiving net is arranged around the lower part of the handling cylinder, and a front net presser for holding the receiving net is an extension of the receiving net. In the threshing portion of the combine arranged above, the front net presser is provided so that the position thereof can be adjusted with respect to the feed chain frame.

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

  In Claim 1, the clearance gap between a tooth-handling and a receiving net can be adjusted so that it may become in the prescription | regulation range according to the kind of crop to harvest. As a result, it is possible to efficiently shed only the tip part while preventing the ear of the cereal from occurring when the gap is narrower than the desired interval, and conversely, the interval is wide. This makes it possible to prevent unhandled leftovers and improve threshing accuracy.

  In claim 2, the distance between the tooth handling and the front mesh can be adjusted by a simple configuration in which the number of shims interposed between the fixing member and the bracket is increased or decreased, or shims having different thicknesses are replaced. Therefore, the effect of claim 1 can be easily obtained.

  In Claim 3, the regular clearance gap according to the kind of crop to harvest can be ensured between a tooth-handling and a front net presser. As a result, it is possible to efficiently shed only the tip of the culm while preventing the ear of the cereal from occurring when the gap is narrower than the desired interval, and on the contrary, the handling that occurs when the gap is wide. It is possible to prevent the residue and improve the threshing accuracy.

Next, embodiments of the invention will be described.
1 is an overall left side view of a combine according to an embodiment of the present invention, FIG. 2 is an overall plan view, FIG. 3 is an overall right side view, and FIG. 4 is a schematic left side view of a threshing unit and a sorting unit. 5 is a schematic diagram showing a power transmission path from the engine to the discharge auger, FIG. 6 is a front view of the bottom of the Glen tank, FIG. 7 is also a plan view, FIG. 8 is a partially perspective view, and FIG. FIG. 10 is a partially enlarged view of FIG. 9, FIG. 11 is a right side cross-sectional view of the Glen tank, FIG. 12 is a rear side view of the threshing device showing an example of the arrangement of the sieving device, and FIG. FIG. 14 is a plan view, FIG. 15 is a side view showing the structure of the sieving device, FIG. 16 is a perspective view, and FIG. 17 is a right side of the swing sorting device. 18 is a perspective view of the same, FIG. 19 is a perspective view, and FIG. FIG. 20 is a rear left side view of the sorting unit, FIG. 21 is a developed view of the sealing member, FIG. 22 is a perspective view of the same, FIG. 23 is a left side sectional view of the suction fan, and FIG. 25 is a rear view, FIG. 25 is a perspective view of an inhalation guide body, FIG. 26 is a perspective view of a lower guide plate, FIG. 27 is a side view of a grain feeder, FIG. 28 is a side view showing a pinch, and FIG. FIG. 30 is a side view showing the structure of the feed chain frame, FIG. 31 is a plan view showing the lock mechanism of the feed chain frame, FIG. 32 is a side view showing the structure of the rear part of the feed chain frame, and FIG. FIG. 34 is a sectional view taken along line AA in FIG. 33, FIG. 35 is a side view showing a pre-guide, FIG. 36 is a front view, and FIG. 37 is a side view showing a joint guide. 38 is the same as FIG. FIG. 39 is a diagram showing the splicing guide as seen from the direction of arrow B in FIG. 37, FIG. 39 is a diagram showing the splicing guide as seen from the direction of arrow C in FIG. 37, FIG. FIG. 42 is an enlarged perspective view showing the configuration of the lead plate, FIG. 43 is a front view showing the handling chamber, and FIG. 44 is a development view showing the receiving net. 45 is a front view showing the lower part of the handling cylinder, FIG. 46 is a front view showing the position adjustment part of the receiving net, FIG. 47 is a partial front sectional view showing the front net presser, and FIG. 48 is a plan view showing the left rear part of the combine. 49 is a side view showing the waste transporting apparatus, FIG. 50 is a perspective view showing the front process side of the waste transporting apparatus, FIG. 51 is a plan view, and FIG. 52 is a link mechanism seen from the direction of arrow E in FIG. 53 is a plan view showing the link mechanism viewed from the direction of arrow D in FIG. 54 is a side view showing the rear end portion of the waste transporting chain, FIG. 55 is a plan view showing the rear end portion of the waste transporting chain, FIG. 56 is a cross-sectional view showing the chain guide, and FIG. 58 is a left side view of the rear portion of the combine showing the safety shutter, and FIG. 58 is a plan view showing the exclusion safety shutter.

First, the whole structure of the combine which concerns on this invention is demonstrated using FIGS. 1-5.
An airframe frame 2 is placed on the crawler type traveling device 1, and a lifting / cutting portion 3 is arranged at the front end of the airframe frame 2 so as to be movable up and down. The pulling / reaping part 3 projects a weed plate 4 at the front end to weed the grain straw, raises the case 5 at the rear part thereof, raises the case 5 and rotates the tine 6 protruding from the case 5 A wrinkle is caused, and the stock is cut by the cutting blade 7 disposed at the rear part of the weed plate 4.

  The harvested cereals are transported to the rear by the upper transport device, the lower transport device, and the vertical transport device 8, and the stock side is inherited by the feed chain 9 of the cereal transport device 170 from the upper end of the vertical transport device 8, The cereals are conveyed into the threshing apparatus including the threshing unit 20 and the sorting unit 30 via the handling cylinder supply start end 280. A waste conveying device 320 including a waste conveying chain 10 is disposed at the rear end of the feed chain 9, and a waste cutter device 321, a diffusion conveyor and the like are disposed below the rear of the waste conveying chain 10. After the processing unit 11 is formed and the waste is cut into pieces, it is uniformly released to the field while being diffused or released without being cut.

  Further, a grain tank 13 for storing the refined grains after sorting is disposed on the side of the threshing section 20, and a driver's cab 14 for covering the control section is disposed at the front of the grain tank 13. In other words, the cab 14 is disposed on the right front of the aircraft in the traveling direction. On the other hand, a vertical auger 15a of a discharge auger 15 is erected at the rear part of the Glen tank 13, and the discharge auger 15 and the Glen tank 13 can be turned sideways around the vertical auger 15a. Rotating to facilitates maintenance of the drive system and hydraulic system arranged on the inside of the machine.

  A discharge conveyor 16 is disposed in the front-rear direction at the bottom of the Glen tank 13, and the rear portion of the discharge conveyor 16 communicates with the lower portion of the vertical auger 15a and from the rear portion of the discharge conveyor 16 to the discharge auger 15. Power is transmitted so that the grains in the grain tank 13 can be discharged from the tip of the discharge auger 15 to a truck or the like. Further, a sorting unit 30 is disposed below the threshing unit 20, and the grain is sorted out from the grains, sawdust, etc. (hereinafter referred to as “processed product”) flowing down from the threshing unit 20, and the fine grains are separated from the grain. It is conveyed to the tank 13, soot and the like are discharged out of the machine, and conveyed to the Glen tank 13.

Here, the driving force transmission path from the engine 60 to the Glen tank 13 and the discharge auger 15 will be described with reference to FIG.
A front output shaft 60 a of the engine 60 is connected to an input shaft of a traveling mission case 61 for driving the crawler traveling device 1, and transmits a driving force to the crawler traveling device 1. On the other hand, a pulley 62 for transmitting driving force to the threshing unit 20 and the sorting unit 30 and a pulley 63 for transmitting driving force to the glen tank 13 and the discharge auger 15 are fitted on the rear output shaft 60b. ing. The pulley 62 is connected to an input pulley 109 fixed to an input shaft 108a protruding from the counter case 108 via a V belt 110, and a part of the driving force of the engine 60 is applied to the input shaft 108a of the counter case 108. To be communicated. In this way, power from the engine 60 is transmitted to each processing system via the counter case 108, and the handling cylinder 22, the red pepper 32, the first conveyor 41, the feed chain 9, the conveying device of the pulling / reaping unit 3 and the cutting blade 7. Etc. can be driven. The counter case 108 can distribute an appropriate speed to each processing system, and is arranged on the left side of the engine 60 and in front of the threshing unit 20 as shown in FIG.

  The front surface of the bottom of the glen tank 13 is positioned substantially behind the engine 60, and a driving case 64 serving as a driving unit is disposed on the bottom front wall surface 13 a of the glen tank 13. The drive case input shaft 65 protrudes forward from the drive case 64 and a pulley 66 is fitted to the front end of the drive case input shaft 65.

  A V-belt 67 is wound around a pulley 63 fitted to the rear end of the rear output shaft 60b and a pulley 66 fitted to the front end of the drive case input shaft 65, and a part of the driving force of the engine 60 is driven to the drive case. 64 input shafts 65 are transmitted.

  An auger clutch 68 that also serves as a tension pulley for the V-belt 67 is provided between the pulley 63 and the pulley 66 so that the driving force can be transmitted to and cut off from the driving case 64 to the downstream side.

  Spur gears 69a and 69b meshing with each other are housed in the drive case 64. The spur gear 69a is externally fixed to the rear end of the input shaft 65 supported by the drive case 64, and the spur gear 69b is discharged. It is externally fitted and fixed to a conveyor drive shaft 70 which is a rotating shaft fitted to the front end of the conveyor 16.

  A bevel gear 71 is fitted at the rear end of the discharge conveyor 16 and meshes with a bevel gear 73 fitted at the lower end of a screw-type vertical feed conveyor 72 in the vertical auger 15a. On the other hand, a bevel gear 74 is fitted on the upper end of the longitudinal conveyor 72, and a bevel gear 75 meshing with the bevel gear 74, an intermediate case 76 in which a chain and a sprocket are installed, and then the bevel gears 77 and 78 inside the grain discharge auger 15 The screw type transverse feed conveyor 79 is driven to rotate.

  With this configuration, the grain stored in the grain tank 13 is conveyed rearward by the discharge conveyor 16 and is forcibly discharged from the tip of the grain discharge auger 15 through the vertical auger 15a located behind the grain tank 13. Is done.

  Next, the vibration mechanism at the bottom of the Glen tank 13 will be described with reference to FIGS. In FIG. 7, the discharge conveyor 16 and a conveyor cover 92 described later are omitted for convenience.

  A drive case 64 is disposed in the front lower portion of the Glen tank 13. In addition to the above-described spur gears 69 a and 69 b, the drive case 64 is a drive plate 81 and a drive that is the rotation center axis of the follower plate 81. A support shaft 82 and the like are provided. One end of the driven plate 81 is fixed to the drive support shaft 82, and an elliptical cam hole 81a is formed on the other end side. On the other hand, a spur gear 69b and a disc-shaped eccentric cam 83 are externally fitted and fixed substantially parallel to each other at the front end of a conveyor drive shaft (eccentric shaft) 70 which is a rotation shaft of the discharge conveyor 16. At this time, the center axis of the disk surface of the eccentric cam 83 and the rotation axis of the conveyor drive shaft 70 do not coincide with each other (that is, the eccentric cam 83 is eccentrically attached to the rotation axis of the conveyor drive shaft 70). At the same time, an eccentric cam 83 is inserted into a cam hole 81 a formed in the driven plate 81.

  On the other hand, the drive pipe 84 is horizontally mounted in the front-rear direction of the Glen tank 13, the front end is fitted and fixed to the drive support shaft 82, and the rear end is a support fixed to the bottom rear wall surface 13b of the Glen tank 13. It is fitted on a pivot shaft 85a that is rotatably supported by the box 85. One end of each of the swing arms 86a and 86b is fixed to the front end and the rear end of the drive pipe 84, respectively. As shown in FIG. 5, the swing arms 86a and 86b are formed in a “h” shape in a side view, and a through shaft 87 is installed between the other ends. However, the drive pipe 84, the drive support shaft 82, and the pivot support shaft 85a can be integrally configured.

  A movable plate 88 is pivotally supported on the through shaft 87. The movable plate 88 is composed of a plurality of movable slats 89, 89, 89, 89 divided into four in the front-rear direction in this embodiment, and each of the scourers 89 is formed of a synthetic resin member having elasticity. This prevents damage to the grain due to impacts when falling or friction when sliding down. A boss 89a is formed at the lower end of each drift sardine plate 89. A through shaft 87 is passed through the boss 89a so that the drift slat 89 can rotate about the through shaft 87 as a rotation center. Supported. As described above, the cereal plates 89, 89, 89, 89 are arranged side by side so as to have no gap between the swinging arms 86a, 86b in a state of being supported by the through shaft 87, and are substantially rectangular movable plates 88 that are long in the front and rear directions. Is configured. The penetrating shaft 87 that penetrates the swing arms 86a and 86b is prevented from coming off by inserting pins 90 into holes provided at both front and rear ends.

  In this way, the movable plate 88 connected to the swing arms 86a and 86b has the smallest inclination angle and the smallest area among the bottom surfaces 13c, 13d, and 13e that form the bottom of the valley tank when viewed from the front. It is placed on the large bottom surface 13e. A lower portion of the bottom surface 13e is formed in a stepped shape, and a boss portion 89a of the drifted grain plate 89 is arranged in an upper space on the side of the discharge conveyor 16 in a stepped portion 13f that is recessed downward in the lower portion, so that the grains are The boss portion 89a does not get in the way when it flows down from the movable plate 88 toward the discharge conveyor 16, and does not get in the way of swinging the drifted grain plate 89.

  Further, a pressing plate 91 is attached to the left wall surface 13g of the glen tank 13 so as to come into contact with the upper surface end portion of each upper cereal plate 89 that is opposite to the end portion where the boss portion 89a is formed. . The pressing plate 91 is formed by bending the rear view plate body into a “h” shape, fixing one side to the wall surface 13 g, and placing the other side on the end portion so as to match the surface of the flowing grain plate 89. The swinging width is longer than 89. In this way, the pressing plate 91 presses the movable plate 88 downward so that the movable plate 88 does not float when the movable plate 88 swings, and also the upper edge of the movable plate 88 and the left wall surface of the Glen tank 13. The gap between 13 g is reliably closed. As a result, the grain flowing down in the Glen tank 13 is caused to flow down on the flown grain plates 89 and 89 of the movable plate 88 from the pressing plate 91 toward the discharge conveyor 16, and between the flown grain plate 89 and the bottom surface 13e. The grain is not pinched between the two.

  Further, as shown in FIG. 5, a front-view umbrella-type conveyor cover 92 is disposed substantially above the discharge conveyor 16, and both ends in the longitudinal direction are connected to the bottom front wall surface 13a and the bottom rear wall surface 13b of the Glen tank 13, respectively. Fixed. When the grain tank 13 operates the discharge conveyor 16 to discharge the grain, the flow of the grain flowing down in the grain tank 13 is divided into left and right by the conveyor cover 92 in the front view, and the grain is transferred to the discharge conveyor 16. Therefore, it is possible to reduce the load on the discharge conveyor 16 and the grain damage.

  With the configuration described above, when the driving force is transmitted to the driving case 64, the conveyor driving shaft 70 rotates and the discharge conveyor 16 rotates, and the eccentric cam 83 also rotates. At this time, the end surface of the eccentric cam 83 and the end surface of the elliptical cam hole 81a formed in the driven plate 81 come into contact with each other, and the driven plate 81 is centered on the drive support shaft 82 supported by the drive case 64. Swings left and right. The swing arms 86a and 86b projecting substantially downward from both front and rear ends of the drive pipe 84 fitted to the drive support shaft 82 also swing left and right about the drive support shaft 82. The movable plate 88 connected to the moving arms 86a and 86b through the through shaft 87 also swings in the inclination direction along the bottom surface 13e having a gentle inclination toward the discharge conveyor 16.

  Therefore, even if the grain is a wet material, the grain flows downward to the grain tank 13 by the swing of the movable plate 88 and flows into the discharge conveyor 16, so that the grain can be carried out at high speed and the grain It is possible to suppress the overall height of the Glen tank 13 while ensuring the volume by loosening the slope of the bottom surface of the tank 13.

  And in such a structure, the boss | hub part 89a is formed in the edge part of the movable plate 88 (flow grain board 89) as mentioned above, and the penetration axis | shaft 87 constructed between rocking arms 86a and 86b by this boss | hub part 89a. Since the movable plate 88 and the swing arms 86a and 86b are connected to each other through the shaft, there is no need for a connecting member such as a hinge to connect the movable plate and the swing arm as in the prior art. The number of parts can be reduced and the weight can be reduced. In addition, since there is no fastening portion by a bolt or the like, there is no fear that the movable plate is detached from the swing arm, and the reliability can be improved.

  Further, as a means for increasing the volume of the Glen tank, it is conceivable to loosen the slope of the inclined surface of the Glen tank. However, if the slope of the inclined surface is loosened, if the grain is a wet material, it will be difficult to slip off and the grain will adhere to the inner wall surface of the Glen tank, increasing the residual grain. The surface remains steeply inclined. Therefore, instead of loosening the slope of the inclined surface, it is possible to increase the volume by bulging the upper part of the Glen tank laterally or forward or rearward, for example, by bulging it upward above the threshing device. Thus, an increase tank can be configured. Here, as shown in FIG. 9, even if the inclination of the inclined surface 13h is loosened by arranging and swinging the upper movable plate 93 on the inclined surface 13h of the bottom of the bulging portion (increasing tank), Since the grains can flow down into the discharge conveyor 16 without adhering, the volume of the glen tank 13 can be further increased.

  In this case, as shown in FIGS. 9 and 10, in the configuration in which the lower movable plate 88 is disposed at the bottom of the Glen tank 13 as described above, the upper swing arm 94a (94b) and the lower swing arm are arranged. 86a (86b) is linked and linked via a link mechanism. In other words, one end of the link 95 is pivotally supported in the middle of the swing arm 86a (86b), and the other end of the link 95 is extended to the upper left, and the swing is disposed on both sides of the lower portion of the upper bulge portion. The upper swing arm 94a (94b) and the lower swing arm 86a (86b) are interlocked and connected to each other in the middle of the arm 94a (94b).

  Further, a support shaft 96 is horizontally mounted on the lower side of the inclined surface 13 h in the front-rear direction of the Glen tank 13, and one ends of swing arms 94 a and 94 b are fixed to the front end and the rear end of the support shaft 96. The swing arms 94a and 94b are supported so as to be rotatable about a support shaft 96 as a rotation center.

  A lower portion of the movable plate 93 is pivotally connected to the other end side of the swing arms 94 a and 94 b through a through shaft 97. The upper movable plate 93 is composed of a plurality of cereal plates 98, 98... Made of a synthetic resin member having elasticity, and a boss portion 98a formed on each cereal plate 98 is pivotally supported by the through shaft 97. Thus, it is formed in a substantially rectangular shape that is long in the front and rear direction.

  Then, the upper movable plate 93 is placed on the inclined surface 13h of the bottom of the increase tank, and the upper end portion of the drifting plate 98 opposite to the end portion where the boss portion 98a is formed is the press plate 99. Abut. In this way, by pressing with the pressing plate 99 so that the drifted grain plate 98 does not float when the movable plate 93 swings, the grains enter the gap between the movable plate 93 and the inclined surface 13h, and the movable plate 93 93 is prevented from obstructing the swing of 93 and the grain is not damaged.

  With this configuration, when the driving force is transmitted to the drive case 64 and the swing arms 86a and 86b swing left and right around the drive support shaft 82, the link 95 causes the swing arms 94a and 94b and the The through shaft 97 installed between the swing arms 94a and 94b also swings left and right around the support shaft 96. As a result, the cereal plate 98 pivotally supported by the through-running chain 97 also swings in the inclined direction along the inclined surface 13 h inclined toward the lower side of the Glen tank 13.

  Therefore, even on the inclined surface 13 h other than the bottom surface 13 e of the Glen tank 13, the grains easily flow due to the swing of the upper movable plate 93, so even if the grains are wet material, the grains to the inner wall surface Can be prevented and the residual grains can be reduced. Therefore, the inclined surface 13h can be a gentle slope without the need for a steep slope, and the volume of the Glen tank 13 can be further increased by that much.

  By the way, as mentioned above, rather than increasing the volume of the Glen tank, the total height of the Glen tank and the cereal conveyor that feeds the grain into the Glen tank is suppressed without changing the volume, and the grain is fully filled. In order to increase the filling rate (%) as much as possible, the grain is introduced from the side wall surface of the Glen tank, and the grain is accumulated first from a position far from the grain inlet in the Glen tank. Therefore, it is desirable that the upper space of the grain tank (the part without grain) when the grain stored in the grain tank becomes full is only in the vicinity of the grain inlet. For this reason, the grain tank then drills a grain inlet in the upper left part of the inner wall surface, so that the grains that are fed from the cereal conveyor are accumulated first from the front and right side of the grain tank. It is configured. Here, the filling rate indicates the ratio of the bulk volume occupied by the harvest in the Glen tank when the space volume in the empty Glen tank is 100%.

  Therefore, the grain accumulation surface (the surface that forms the boundary between the upper part of the grain tank and the top of the grain) that has been thrown in from the grain inlet and dispersed throughout the grain tank is the reference horizontal plane (gravity In other words, it is not parallel to a direction perpendicular to the direction in which the film acts, but has a predetermined deposition angle (an angle formed by the deposition surface and a reference horizontal plane).

  Therefore, a plurality of Glen sensors consisting of electrostatic volume sensors that detect the presence or absence of grains in the vicinity are arranged as a crop detection means in the Glen tank. If the rear inner wall surface is provided with a predetermined interval in the vertical direction, an error occurs between the grain storage amount and the actual grain storage amount detected by the Glen sensor.

  Therefore, as shown in FIG. 11, in the configuration in which the grain inlet 100 is formed in the upper left part of the rear inner wall surface 13 j of the grain tank 13 and the grain tank 13 and the cereal conveyor 44 communicate with each other, the grain tank 13 The first glen sensor 101, the fourth glen sensor 104, and the fifth glen sensor 105 are provided on the rear inner wall surface at a predetermined interval in the vertical direction below the grain input port 100 on the grain input side of A full grain sensor 106 is disposed below the mouth 100. On the other hand, the second glen sensor 102 and the third glen sensor 103 are spaced at predetermined intervals in the up and down and front and rear directions on the inner side surface of the hatch 107 that closes the maintenance opening disposed on the left side surface (inside the machine body) of the glen tank 13. Provided. The second glen sensor 102 is arranged on the front side of the hatch 107, and the third glen sensor 103 is arranged on the rear side. In the present embodiment, a total of five electrostatic volume sensors are used as the crop detection means, but the type, number, mounting position, etc. of the sensors used as the crop detection means are not limited thereto. .

  In such a configuration, when the accumulation surface becomes the accumulation surface 111a in FIG. 11 with the increase of the grains dispersed and flowing down at various places in the Glen tank 13, the first Glen sensor 101 detects the grains. Furthermore, as the grain in the grain tank 13 increases and the deposition surface changes in sequence to the deposition surface 112a, the deposition surface 113a, the deposition surface 114a, and the deposition surface 115a, the second and third Glen sensors 102 and 103, respectively. The grain is detected by the fourth grain sensor 104 and the fifth grain sensor 105.

  Therefore, since the position of the grain sensors 101, 102, 103, 104, and 105 is an accurate position corresponding to the corresponding deposition surface, the grains when detected by the respective grain sensors 101, 102, 103, 104, and 105 are displayed. The storage amount of the grain in the tank 13 and the actual storage amount substantially coincide with each other, so that the filling rate of the grain can be detected more accurately, and the volume of the Glen tank 13 is fully utilized by increasing the filling rate. can do. In addition, since the second glen sensor 102 and the third glen sensor 103 are disposed on the inner side surface of the hatch 107, the maintenance becomes easy.

Next, the threshing unit 20 will be described with reference to FIG.
The handling chamber 21 formed in the threshing unit 20 is provided with a substantially cylindrical handling cylinder 22 that is pivoted in the front-rear direction of the machine body. On the outer peripheral surface of the handling cylinder 22, tooth handling 22a, 22a,. Has been planted. A semicircular receiving net 23 is detachably provided so as to cover the lower periphery of the handling cylinder 22. On the other hand, the feed chain 9 restrains the stock side of the cereal while inserting the front end side of the cereal into the lower side of the handling cylinder 22 and transports the cereal to the rear of the machine body. At this time, threshing is performed by rotation of the barrel 22 so that grains, sawdust and the like leak from the receiving net 23.

  A dust feed valve 24 is provided on the inner peripheral surface of the handling chamber cover 21a covering the handling chamber 21 at an appropriate interval in the left-right width direction, and is pivotally supported about a pivot point in the vertical direction. ing. Then, by rotating the dust supply valve 24, it is possible to adjust the time for the cereal to move in the handling chamber 21 in accordance with the varieties of the cereal and the state of the cereal.

  A processing chamber 25 is formed on the rear side of the rear side of the handling cylinder 22 (the grain tank 13 side, in the present embodiment, on the right side in the machine body traveling direction). The processing chamber 25 is formed in a substantially cylindrical shape. The dust feeding port processing cylinder 26 is horizontally and axially supported in the front-rear direction on the side of the rear part of the handling cylinder 22 so that it is parallel to the handling cylinder 22. Further, the rear (right) side surface of the handling cylinder case that covers the handling cylinder 22 and forms the handling chamber 21, and the front part (left) of the processing cylinder case that covers the dust-feed port processing cylinder 26 and forms the processing chamber 25. A dust feed port 27 is opened on the side surface, and the handling chamber 21 and the processing chamber 25 are communicated with each other. A semicircular processing cylinder network 28 is provided so as to cover the lower periphery of the dust supply port processing cylinder 26. In this way, unprocessed materials such as shoots adhering grains that could not be processed by the handling cylinder 22 are transferred to the processing chamber 25 through the dust delivery port 27 and processed, and holes (mesh) provided in the processing cylinder network 28 are processed. Only the processed material leaks through.

  In addition, a blade body 26a made of a long plate body is fixed on the outer peripheral surface of the rear end portion of the dust supply port processing cylinder 26. The wing body 26a rotates integrally with the dust outlet processing cylinder 26, and the sawdust conveyed to the rear of the processing chamber 25 by the dust outlet processing cylinder 26 is splashed off by the rotation of the wing body 26a. It is discharged below the dust-feed port processing cylinder 26 and guided outside the machine body by a guide plate (not shown).

  Below the processing cylinder 28, a dust feeding / conveying conveyor 29 is pivoted in the front-rear direction. The dust feeding conveyor 29 is a screw type conveyor, and the processed material that has dropped downward through the holes (mesh) provided in the processing cylinder network 28 by the dust feeding conveyor 29 is forward of the machine body (that is, , In the direction opposite to the conveying direction of the dust feeding port processing cylinder 26), and is reintroduced into the sorting unit 30 through the dust discharging port 29 a provided at the front end of the dust feeding and conveying conveyor 29.

  An outlet partition plate 52 is disposed at the rear of the handling cylinder 22, and a sieving device 120 is disposed at the lower part of the outlet partition plate 52 and above the extension line of the handling cylinder receiving net 23. Prevention of fraying is achieved.

  As shown in FIG. 12, a discharge port 52a is formed in the outlet partition plate 52. The outlet partition plate 52 is formed in a shape surrounding the discharge port 52a, and is also formed below the discharge port 52a. An exit divider 52 is present. The sieving device 120 is attached to a portion of the outlet partition plate 52 located below the discharge port 52a.

  The sieving device 120 is disposed between the handling cylinder 22 and the suction fan 40 in a side view, on the side of the dust supply port processing cylinder 26, and above the swing sorting apparatus 31 provided with the chaff sheave 38. Yes. The sieving device 120 is located immediately behind the lower rear end of the handling cylinder 22 and is located where the sorted air that has passed through the air path below the handling cylinder 22 exits a wider air path. .

  In addition, as shown in FIG. 13, when the outlet partition plate 52 provided at the rear end of the handling cylinder 22 has a shape that exists only above the discharge port 52a, the frame 23a to which the receiving net 23 is fixed is attached. A sieving device 120 is attached. However, in this case, since the sieving device 120 is located immediately below the rear end of the handling cylinder 22, clogging may occur between the handling cylinder 22 and the sieving device 120. Therefore, a guide member 121 is provided on the frame 23a that rotatably supports the sieving device 120, and the guide member 121 can guide the sieving device 120 without clogging the processed material.

  The guide member 121 has substantially the same left and right width as the sieve plate 122, is fixed to the upper portion of the support member 123 while being inclined downwardly, and extends to a position just behind the rear end of the handling cylinder 22. The guide member 121 and the sieve plate 122 are arranged in a substantially straight line.

  14, 15, and 16, the sieving device 120 is attached to the machine body to be oscillated, and is attached to the oscillating sorting device 31 to oscillate the oscillating body. The swinging member is a support member 123 provided in a horizontal direction on a U-shaped support member 123 fixed to the frame 23a (the outlet partition plate 52 in the case of FIG. 4). A base 124 pivotally supported by a shaft 123a, a comb-shaped sieve plate 122 attached to the upper surface of the base 124, and an arm 125 extending rearward from the base 124. Has been.

  The arm 125 is fixed to the left end portion of the base portion 124 and is arranged in parallel with the sieve plate 122 with a predetermined interval. Thus, the upper end portion 125a of the arm 125 is configured to also serve as a sieve wire.

  Further, guide members 125b and 125c that are spaced apart from each other by the diameter of a roller 126a, which will be described later, are provided on the left side surface of the arm 125 so as to protrude vertically. The guide members 125b and 125c are formed to be bent in a “h” shape when viewed from the side, and are configured such that the rear side opens in the vertical direction. A guide member 125d is fixed below the guide members 125b and 125c. The guide member 125d is curved so as to protrude downward, and is formed in a warp shape. The lowermost position is located below the arm 125.

  On the other hand, the swing drive member is composed of a stay 126 having a substantially triangular shape when viewed from the side fixed to the left side plate 31L of the swing sorting device 31, and a roller 126a pivotally supported on the inner side of the upper side surface of the stay 126. The roller 126a is slidably fitted between the guide members 125b and 125c of the arm 125.

  In such a configuration, when the swing sorting device 31 swings, the roller 126a attached to the swing sorting device 31 swings substantially vertically and receives the swing of the roller 126a via the arm 125. Thus, the base 124 of the sieving device 120 swings, that is, the sieving device 120 swings. For this reason, the broken pieces such as the broken pieces and the removed pieces separated from the processing object by the swinging of the sieving device 120 are discharged backward from the sieve plate 122 and sucked by the suction fan 40 without falling on the chaff sheave 38. It will be.

  When the sieving device 120 is attached to the frame 23a, the guide member 121 can guide the sieving device 120 without clogging the processed material. That is, even if the mounting position of the sieving device 120 is changed according to the shape of the outlet partition plate 52, the guide member 121 is provided between the receiving mesh 23 and the sieving device 120, so It is possible to effectively use the sieving device 120 without clogging or cutting waste between the device 120 and without disturbing the swinging of the sieving plate 122. Therefore, even when a large amount of grain is conveyed to the chaff sheave 38 at once, or even when the grain is a wet material, the sorting process can be sufficiently performed.

Next, the sorting unit 30 will be described with reference to FIG.
In the sorting unit 30, swing sorting by the swing sorting device 31 and wind sorting by the Kara 32 are performed, and the sorting is performed into the first thing, the second thing, the sawdust, and the like.

  The swing sorting device 31 is housed in the machine casing 33. The front end portion of the swing sorting device 31 extends below the front end portion of the handling cylinder 22, and the rear end portion of the swing sorting device 31 swings so as to extend below the rear end portion of the dust feeding port processing drum 26. The front-rear length of the moving sorting device 31 is determined. A swing shaft (not shown) is provided at the front lower portion of the swing sorting device 31, and a swing drive mechanism 34 is provided at the rear. The swing sorting device 31 is attached to the machine frame 33 by the swing drive mechanism 34. It is comprised so that it may rock | fluctuate with respect to it. A fuel tank 59 (see FIG. 20) is disposed below the swing drive mechanism 34.

  A front cereal plate 35 is provided at the front of the swing sorting device 31, and a wake cereal plate 36 is provided below the front cereal plate 35. The front and rear flow cereal plates 35 and 36 are formed by corrugating plate-like members, and the processed product (mixture with grains and sawdust, etc.) that has passed through the receiving net 23 is the front and rear flow cereal plates 35. It falls onto 36 and is conveyed to the rear of the machine body by the swing of the swing sorting device 31. Further, a net-like grain sheave 37 as a second selection unit is connected to the rear portion of the rear flow cereal plate 36, and above the grain sheave 37 and the rear flow cereal plate 36 and behind the front flow cereal plate 35. Is covered with a chaff sheave 38 which is a first selection unit. A Strollac 39 is disposed behind the chaff sheave 38.

  The chaff sheave 38 includes a plurality of chaff fins 38a, 38a,..., And the opening degree of the chaff fins 38a, 38a,. That is, as shown in FIG. 17, the upper and lower ends of the chaff fins 38a, 38a... Are pivotally supported by the swing sorting device 31 and are pivotally connected to swing plates 131 provided on the left and right sides of the chaff sheave 38. The other end is pivotally connected to sliding plates 132 provided on the left and right sides of the chaff sheave 38. The swing plate 131 is swung integrally with the swing sorting device 31, and an adjustment lever 133 is pivotally connected to the slide plate 132, and the wire 134 connected to the adjustment lever 133 is relaxed or pulled. Thus, the sliding plate 132 is slid back and forth. The adjustment lever 133 is urged by a spring 135 provided on the side opposite to the wire 134 in a direction to make the inclination angle of each chaff fin 38a, 38a.

  When the angle of the chaff fins 38a, 38a,... Is changed by sliding the sliding plate 132, and the inclination angle of the chaff fins 38a, 38a,. The amount of leakage of the grain is increased, and when the inclination angle of each chaff fin 38a, 38a... Is made small (laid down), the opening of the chaff sheave 38 is made small and the amount of leakage of the grain is reduced. doing.

  Thus, the grains and fine swarf pass downward through the chaff sheave 38 and fall downward, and the swarf and the like larger than the opening of the chaff sheave 38 are conveyed rearward. At this time, an air flow from the front of the sorting unit 30 to the back of the sorting unit 30 is generated between the chaff sheave 38 and the Glen sheave 37, and a part of the fine swarf is blown back and separated from the grains. .

  Here, as shown in FIGS. 14 and 17, the adjusting lever 133, the wire 134, and the spring 135 are provided inside the swing sorting device 31. An adjuster 136 and an outer receiver 137 that can adjust the length of the spring 135 and the length of the spring 135 are disposed on the left rear portion inside the swing sorting device 31. The upper and the side are elastic such as a rubber plate so that dust is not discharged. It is covered with a cover 138 made of a member. This makes it possible to adjust the length of the spring 135 from the rear of the machine body, thereby improving maintenance. Conventionally, a spring for urging the adjustment lever of the chaff sheave is arranged between the swing sorting device and the machine frame, so a certain interval must be ensured between the swing sorting device and the machine frame. However, although the sorting width could not be used effectively, in this embodiment, since the spring 135 is disposed inside the swing sorting device 31, the left and right width of the swing sorting device 31 is set to the machine frame 33. Can be as large as possible. Therefore, the sorting performance can be improved by effectively utilizing the sorting width.

  By the way, the swing sorting device 31 configured as described above rotates the rear cover upward, and rotates the rear cover about the left and right sides of the squeeze processing unit 11 to the rear threshing unit 20 and The rear portion of the sorting unit 30 is opened, the sorting unit rear cover 140 is removed, and the swing sorting device 31 can be pulled out and detached rearward so that maintenance can be easily performed.

  As shown in FIG. 18, the machine frame 33 that supports the swing sorting device 31 is provided with guide rails 141 on the left and right, and the swing sorting device 31 reciprocally slides back and forth by the swing drive mechanism 34. At this time, the front and rear swing rollers 142 and 143 provided at the lower portion of the swing sorting device 31 slide on the guide rail 141 so that the swing sorting device 31 swings back and forth smoothly. I have to.

  Furthermore, in addition to the swing rollers 142 and 143, the swing sorting device 31 is provided with detaching rollers 144 and 145 between the front end portion of the swing sorting device 31 and the front and rear swing rollers 142 and 143. When the swing sorting device 31 is attached or detached, the swing rollers 142 and 143 and the detaching rollers 144 and 145 can be used. For example, when the swing sorting device 31 is inserted into the machine frame 33 so that the detaching rollers 144 and 145 slide on the guide rail 141, the swing sorting device 31 is swung as the swing sorting device 31 is moved forward. The rollers 142 and 143 slide on the guide rail 141, and the attaching / detaching work of the swing sorting device 31 is simplified.

  In such a configuration, when performing the detachment work of the swing sorting device 31, if the sieving device 120 is disposed above the swing sorting device 31, the sieving device 120 becomes an obstacle and maintenance is performed. Although it is conceivable that the property is deteriorated, since the guide member 125d is provided on the arm 125 of the sieving device 120 as described above, the problem is solved. That is, as shown in FIG. 15, since the guide member 125d curved downward from the arm 125 of the sieving device 120 is disposed so as to protrude downward, when the swing sorting device 31 is extracted from the machine frame 33, As shown in FIG. 19, the guide member 125 d comes into contact with and slides on the chaff sheave 38. Thereby, the sieving device 120 is rotated upward and does not get in the way, and the maintainability is improved.

  As shown in FIG. 20, seal members 151 and 152 are disposed between the swing sorting device 31 inserted into the machine frame 33 and the machine frame 33 in this way. The seal member 151 is formed of an elastic member such as a rubber plate having a width substantially the same as the front and rear width of the side plate 31L (31R) of the swing sorting device 31, and a lower end portion is formed on the upper edge portion of the side plate 31L (31R). The upper end is brought into contact with the machine casing 33 to seal the gap between the swing sorting device 31 and the machine casing 33.

  On the other hand, the seal member 152 is attached to the side plate 31 </ b> L (31 </ b> R) of the swing sorting device 31 so as to incline rearward in the vicinity of the second recovery portion 47. As shown in FIG. 21, the seal member 152 is formed in an inverted T shape from an elastic member made of a rubber plate or the like, and is provided with a plurality of holes for inserting fastening members on both the left and right sides in the longitudinal direction. 152a and 152b are configured.

  Then, as shown in FIG. 22, the seal member 152 is folded at the center in the short side direction and doubled, and in this state, the mounting portions 152 aL and 152 aR and the mounting portions 152 bL and 152 bR are further connected to the swing sorting device 31. The fitting portions 76aL and 76aR are fastened to the side plate 31L (31R) of the swing sorting device 31 and the attachment portion 152bL (152bR) of the attachment portions 152bL and 152bR is fastened to the machine frame 33. The attachment portion 152bR (152bL) is fastened to the seal member 153 attached to the rear surface of the swing sorting device 31. In this way, the apex portion 152c formed by bending the seal member 152 is brought into contact with the machine frame 33, thereby sealing the gap between the swing sorting device 31 and the machine frame 33, and the swing drive mechanism below the seal mechanism 152 This prevents dust and the like from leaking to 34 and the like.

  As described above, since the seal member 152 is disposed between the swing sorting device 31 and the machine casing 33, an empty space can be used effectively, and the swing sorting device 31 and the machine casing can be used. Interference with 33 can be prevented. Further, since the seal member 152 is used in an overlapped state, it is possible to improve the sealing performance and durability. Even if the apex portion 152c of the seal member 152 is slid in contact with the machine casing 33, the sealed state can be maintained and leakage can be prevented until the replacement is performed.

  In addition, a tang 32 is disposed below the front cereal plate 35 and below the front cereal plate 36 in the swing sorting device 31 so as to blow the sorting air to the chaff sheave 38 and the grain sheave 37. Further, a second fan 43, which is a sub-feed fan, is also provided between the first conveyor 41 and the second conveyor 42 so as to blow the sorting wind, and the wind at the rear of the sorting section 30 where the wind of the sorting wind by the tang 32 is weakened. The sorting performance by sorting is prevented from deteriorating.

  In the vicinity of the rear end of the oscillating sorting device 31, a suction fan 40 is installed across the entire width, and dust that has flowed through the sorting wind supplied from the tang 32 and the second fan 43 or dust generated during threshing. Etc. are sucked by the suction fan 40 and discharged outside the apparatus.

Here, the fan casing 161 and the lower guide plate 166 that cover the suction fan 40 will be described with reference to FIGS. 23 to 26. The suction fan 40 is constituted by a cross-flow fan, and the cage impeller 40a is Covered by an upper fan casing 161 and a lower lower guide plate 166, the dust sucked by the suction fan 40 is guided to the outside and discharged. In FIG. 23, the suction fan 40 rotates clockwise in a side view so as to discharge dust from the front side to the rear side.

  In addition, at an arbitrary position on the upper surface of the fan casing 161, in the present embodiment, a rear position, a suction hole 163 is opened over substantially the entire width, and a guide body 164 is fixed so as to cover the suction hole 163. Yes. The guide body 164 is formed by bending the plate body into a triangular shape when viewed from the side so that the front and the bottom are opened, the lower opening is substantially aligned with the suction hole 163, and the front opening is the suction port 164a. The area of the suction port 164a is smaller than the open area below.

  As shown in FIGS. 24 and 25, the guide body 164 is formed with an edge around the periphery of the inlet 164a, and bolt holes 164b, 164b,... The bolt is inserted and fixed to the fan casing 161 and fixed.

  Thus, when the suction fan 40 is rotationally driven, an air flow flows from the front side to the rear side, and the pressure in the fan casing 161 near the suction hole 163 becomes low, that is, the inside of the guide body 164 becomes negative pressure, Air outside the casing 161 passes through the suction hole 163 from the suction port 164a and is sucked into the fan casing 161. At this time, dust accumulated in the vicinity of the upper surface of the fan casing 161, drifting dust, and the like are guided from the suction port 164a to the guide body 164 and sucked into the fan casing 161, and discharged outside the apparatus.

  As described above, the suction hole 163 is provided on the upper surface of the fan casing 161, and the guide body 164 having an open top is provided around the suction hole 163, so that dust or the like accumulated near the outside of the fan casing 161 of the suction fan 40 can be removed. Can be removed by aspiration. The suction fan 40 can discharge not only the large soot that has been conveyed to the rear of the chaff sheave 38 but also fine dust generated in the processing chamber 25. As a result, it is possible to reduce the number of times of maintenance on the upper surface of the fan casing 51 without requiring new power.

  Further, on the swing sorting device 31, the wastes sent from the threshing unit 20, the sorting unit 30, etc. may accumulate, become clogged, or stick, so dust such as wastes can be removed. Maintenance, such as adjustment or adjustment.

  During maintenance, the swing sorting device is usually taken out of the machine frame and maintenance is performed outside the machine body. To remove this swing sorting device, the evacuation processing section at the rear of the machine body is rotated rearward to rotate the rear surface. It was opened and the swing sorter was pulled backwards. Therefore, as shown in FIG. 23, the lower guide plate 166 can be rotated upward so that the lower guide plate 166 does not get in the way at this time.

  That is, as shown in FIGS. 23 and 26, the lower guide plate 166 is composed of the front guide plate 167 and the rear guide plate 68, and the front guide plate 167 extends downward and upward, covering the lower side of the impeller 40a. Further, the rear portion of the front guide plate 167 is bent into a “<” shape when viewed from the side, and the rear end extends downward. The rear end portion of the front guide plate 167 is connected to the rear end via at least one hinge 169. A guide plate 168 is attached. Then, the hinge 169 is fixed to the front portion of the rear guide plate 168, the front end of the rear guide plate 168 is brought into contact with the lower surface of the rear portion of the front guide plate 167, and the rear guide plate 168 is centered around the hinge 169. Although it cannot rotate downward with respect to 167, it is configured to be rotatable upward, and the rear guide plate 168 extends obliquely downward on the rear extension of the front guide plate 167. The rear guide plate 168 has a larger area than the rear bent portion of the front guide plate 167. When the rear guide plate 168 is rotated upward, the front end of the front guide plate 167 It protrudes from the bent part.

  Then, when removing the swing sorting device 31, the rear guide plate 168 is lifted and rotated, and the swing sorter 31 is pulled out with the rear guide plate 167 kept on the rear portion. Even if the maintenance is completed and the swing sorting device 31 is assembled in the original position and the rear guide plate 168 is forgotten to return to the original position, the wind pressure generated by the suction fan 40 is guided to the rear guide. It hits the protruding portion of the plate 168, rotates downward about the hinge 169, and automatically returns to the original position.

  Thus, the lower guide plate 166 of the fan casing 161 is constituted by the front guide plate 167 and the rear guide plate 168, and the hinge 169 connecting the front guide plate 167 and the rear guide plate 168, and the rear guide plate 168 is inclined. Since the rear guide plate 168 is pivoted forward and upward with the hinge 169 as a fulcrum, the lower guide plate 166 does not get in the way when the swing sorting device 31 is removed. The swing sorting device 31 can be easily detached from the main body, and the maintainability of the swing sorting device 31 can be improved. Further, even if the rear guide plate 168 is forgotten to be lowered, it automatically returns to the original position by the wind pressure of the suction fan 40, so that it does not hinder the discharge or dust discharge.

  In addition, as shown in FIG. 4, the first conveyor 41 and the second conveyor 42 are horizontally provided in the left-right direction at the front and rear halfway position below the swing sorting device 31. The positional relationship between the first conveyor 41 and the second conveyor 42 is such that the first conveyor 41 is closer to the tang 32 (front part of the machine frame 33) and the second conveyor 42 is farther from the tang 32 (rear part of the machine frame 33). )

  The right end of the first conveyor 41 is connected to a whipping conveyor 44 provided such that its longitudinal direction (conveying direction) is substantially vertical, and the upper end of the whipping conveyor 44 communicates with the inside of the glen tank 13. ing.

  A mixture of grains, shoots adhering grains, immature grains, and fine swarf that have been introduced into the sorting unit 30 and leaked onto the front-flow grain board 35 is removed in the process of being leaked onto the chaff sheave 38. Due to the air flow from the front to the rear of the sorting unit 30 generated by 32, a part of the fine sawdust is blown away backward. Mixtures such as grains leaked on the chaff sheave 38, branch sticky grains, immature grains and fine swarf are conveyed backward by the rocking of the rocking sorter 31. At this time, the grains, immature grains Grains, branch sticking grains, fine swarf, etc. fall below the opening of the chaff sheave 38, and large swarf is conveyed to the rear of the chaff sheave 38 and is discharged out of the machine through the stroller 39.

  The grain, the immature grain, the branch stick attached grain, the fine shavings, and the like that have dropped below the opening of the chaff sheave 38 are leaked onto the wake grain plate 36 and the glen sieve 37. At this time, a part of the fine swarf is blown backward and separated by the sorting wind from the tang 32.

  Of the grains, immature grains, shoots adhering grains, fine swarf and the like leaked on the grain sieve 37, the cereal grains, immature grain, fine swarf, etc. pass through the grain sieve 37 and fall downward. At this time, the heaviest grain (the first) is collected in the first collecting unit 46 (the bottom of the sorting unit 30 provided behind the drifting grain plate 45 and containing the first conveyor 41). Then, it is conveyed from the first conveyor 41 to the Glen tank 13 through the cereal conveyor 44.

  On the other hand, unprocessed grains mixed with a small weight of immature grains, a part of fine swarf, ear-cut grains, grains, etc. are blown backward by the sorting wind from the Karatsu 32, and the second recovery unit 47 (one The second collecting conveyor 42 is housed in the depression on the bottom surface of the sorting unit 30 provided behind the number collecting unit 46, and passes through the second reducing conveyor 48 from the second conveyor 42 to the branch belly processing cylinder. 49, and after the branch stem is removed by the branch-pipe processing barrel 49, it is re-introduced on the front-flow cereal board 35 (or on the chaff sheave 38).

Next, the cereal conveying apparatus 170 will be described with reference to FIGS.
In the above-mentioned threshing unit 20, the cereal haul conveying device 170 is for conveying while squeezing one end (stock source side) of the harvested cereal. A feed chain 9 that conveys to the waste conveying chain 10 of the waste conveying device 320, a pin 171 that is disposed above the feed chain 9 and pinches the grain that is being conveyed, and the pin 171 Are elastically supported with respect to the main body side, and the like.

  In this cereal transporting device 170, the stocker side of the culm that has been raised and harvested by the mowing unit 3 is sandwiched between the opposingly arranged nip 171 and the feed chain 9, and the handling in the handling chamber 21 is performed. The body 22 is configured to thresh, and a portion where the pinch 171 and the feed chain 9 face each other is used as a conveyance path. The waste after being threshed by the threshing unit 20 is inherited to the waste conveying chain 10 of the waste conveying device 320 at the rear end portion (downstream end portion) of the feed chain 9. It is transported to the waste disposal unit 11 by the transport chain 10.

  The clamp 171 is provided with a support rod 174 fixed by a stay 173, 173, etc. at the left end of the handling chamber cover 21a in the airframe traveling direction, and a plurality of elastic supports 172, 172. Via an elastic support. This pinch 171 has a shape in which a pair of plate-like members are arranged in parallel to the left and right along the feed chain 9, and is formed in a reverse U shape in a cross-sectional view in the conveyance direction by the feed chain 9. Yes.

  The support rod 174 is a hollow columnar member, and is formed to be long in the front-rear direction on the left side in the handling chamber cover 21a and to be arranged in parallel with the pinching rod 171. Further, elastic support members 172, 172,... Are supported on the side surfaces of the support rods 174 at regular intervals, and the upper portions thereof are supported and disposed between the elastic support members 172, 172,. The flange 171 is elastically supported. The lower part of the elastic support 172 is pivotally supported by the pin 171 with a connecting pin 175, and the upper part of the elastic support 172 extends upward from the support bar 174.

  As shown in FIG. 29, the elastic support member 172 includes a cylindrical portion 176, a cylindrical bearing pipe 177 inserted into the cylindrical portion 176, and a slide that slides up and down in the bearing pipe 177. It is composed of a moving rod 178 and the like, and a front view type pivot support 179 is fixed to the lower end portion of the sliding rod 178. By this pivotal support 179, a connecting pin 175 for connecting a clip 171 having a shape in which plate-like members are arranged in parallel to the left and right is pivotally supported. Further, a spring receiver 180 is fitted on the cylindrical portion 176. The spring receiver 180 is located below the support rod 174, and an elastic body 181 such as a spring is wound around the outer peripheral surface of the sliding bar 178 between the spring receiver 180 and the pivotal support 179, so that the pin The flange 171 is urged downward (feed chain 9 side). That is, the movement of the pin 171 that is movable in the vertical direction by the slide bar 178 that is slidable in the vertical direction in the bearing pipe 177 is externally fitted to the slide bar 178. It is made elastic by the elastic body 181, and the clip 171 is always urged toward the feed chain 9, so that the conveyed grain basket can be clamped. These elastic supports 172, 172,... Are arranged in parallel so as to be biased toward the substantially vertical direction at regular intervals with respect to the transport direction.

  Thus, the pinch 171 urged downward by the elastic support 172 has a shape in which a pair of plate-like members are arranged in the left-right parallel manner as described above, and the left and right plate-like members. Has a configuration in which a plurality of clamping units 182, 182,... Are connected in series by the connecting pins 175, 175,. That is, the sandwiching units 182, 182... Connected in series in the cereal conveying direction are sandwiched between the front and rear ends of the sandwiching units 182, 182. .. Are arranged so as to overlap in a side view, and this overlapping portion is pivotally supported by connecting pins 175, 175. That is, the front end portion and the rear end portion of these sandwiching units 182, 182... Are formed with a long hole-shaped mounting hole 182a in the front-rear direction, and the lower end portion of the elastic support 172. The fixed support 179 is formed with mounting holes into which the connecting pins 175 are inserted in the left-right direction. By inserting the connecting pins 175 into these mounting holes, the elastic support body 172 is sandwiched. It is fixed to the flange 171.

  With such a structure, the elastic support 172 is arranged in each connecting portion of the sandwiching units 182, 182,..., And each connecting portion slides on the sliding rod 178 of the elastic support 172. It can move elastically with respect to the direction, and the scissors 171 have a structure that sandwiches the straw while following the thickness of the transported straw.

  28 and 29, the rear ends of the clamping units 182, 182,. The clamping unit 183 located at the end is extended toward the downstream in the conveying direction compared to the other clamping units 182, 182,... .

  The front end portion of the sandwiching unit 183 is supported at the rear end portion of the elastic support body 172 in the same manner as the other sandwiching units 182, 182,... Are elastically supported by an elastic support body 172 ′ having a different biasing direction from the other elastic support bodies 172, 172. That is, even in the middle part of the sandwiching unit 183, the pin 184 is fitted into the elongated mounting hole 183a formed in the sandwiching unit 183 and fixed to the lower end of the elastic support 172 ′. It supports the pivotal body 179 that is provided.

  The elastic support 172 ′ disposed at the rear end portion in the conveying direction of the grain straw, that is, the joint portion from the feed chain 9 to the waste conveying chain 10 is substantially vertical by the other elastic supports 172, 172. It is inclined forward by an angle θ1 with respect to the urging direction of the direction, and is arranged so that the urging force by the elastic support 172 ′ is substantially perpendicular to the conveying direction of the cereal.

  In this way, the elastic support 172 ′ located at the rear end and supporting the middle part of the pinching unit 183 is tilted forward, so that the pinching unit 183 on the side of the inheritance part to the waste transport chain 10 is moved. By urging substantially perpendicularly to the cereal conveyance direction, this is compared with other elastic supports 172 urging in the vertical direction with respect to the cereal conveyed obliquely upward rearward by the feed chain 9. The sliding direction of the sliding rod 178 of the elastic support 172 ′ becomes a direction that matches the moving direction of the pinching unit 183, and the urging force by the elastic body 181 acts on the pinching unit 183 more effectively. As a result, the elastic movement of the pinching unit 183 at the joint portion from the feed chain 9 to the rejecting and conveying chain 10 becomes smooth, and the pinching by the pinching unit 183 is transferred to the grain to be conveyed. Since the followability with respect to the thickness of the cocoon and the like is increased, the cereals can be prevented from being disturbed or spilled at the inherited portion, and the transfer from the feed chain 9 to the waste conveying chain 10 can be made smoother. It becomes. That is, the conveyance of the waste from the threshing unit 20 to the waste processing unit 11 becomes smoother.

In addition, by arranging the elastic support 172 ′ so as to be biased in a direction substantially perpendicular to the conveying direction by the feed chain 9 in this way, compared to the other elastic supports 172, 172. The length of the expansion / contraction stroke of the elastic support 172 ′ is long. That is, the elastic rod 178 slidably disposed in the bearing pipe 177 has a longer elastic expansion / contraction stroke length than the other elastic support 172. . Thereby, the movement range of the clamping unit 183 becomes large.
In other words, since no sandwiching unit is connected to the rear side of the sandwiching unit 183, the force applied to the sandwiching unit 183 increases as the amount of the spent basket increases, but it is located at the rear end. Since the elastic support member 172 ′ has a long expansion / contraction stroke, it can be sufficiently received and the cereal can be smoothly conveyed to the waste conveying chain 10.

  In the present embodiment, the elastic support 172 ′ located at the rearmost end is tilted forward with respect to the other elastic support 172, and is arranged so as to be biased substantially perpendicular to the transport direction. However, the present invention is not limited to this, and a plurality of elastic supports may be targeted. Further, in the present embodiment, the clip 171 disposed opposite to the feed chain 9 has been described, but the present invention can also be applied to other transport devices in a combine such as the waste transport chain 10.

Next, the configuration of the feed chain 9 and the feed chain frame 190 that supports the feed chain 9 will be described with reference to FIGS. 30, 32, and 33.
As shown in FIGS. 30 and 32, the feed chain 9 is configured by being wound around a plurality of sprockets 191 a, 191 b, and 191 c provided in the feed chain frame 190. The feed chain 9 has a pivot center P (see FIG. 33) in the vertical direction of the machine body at the rear end (the rear of the machine), and a front locking device 192 and a front end (the front of the machine) and the rear end. A rear lock device 193 is provided, and can be opened and closed together with the feed chain frame 190 with the rotation center P as a rotation axis toward the left side of the machine body. The feed chain is formed by the front lock device 192 and the rear lock device 193. The frame 190 is fixed to the machine body side. However, the front locking device 192 and the rear locking device 193 can be interlocked, and the rear locking device 193 can be omitted.

  The feed chain frame 190 includes a horizontal frame 190a that is horizontal in the longitudinal direction of the machine body, and an oblique frame that serves as a guide on the inner upper side of the feed chain 9 that intersects at the front end of the horizontal frame 190a and extends backward to form an upward slope. 190b, a rotation fulcrum frame 190c configured by bending a pipe in a U-shape in a side view fixed to the rear end portion of the horizontal frame 190a, and a reinforcing frame 190d are configured in a substantially triangular shape in a side view.

  A front reinforcing plate 194 is fixed to the front end side surfaces of the horizontal frame 190a and the oblique frame 190b by welding or the like. Further, the rear end portion of the oblique frame 190b and the front upper portion of the reinforcing frame 190d are fixed to the rear reinforcing plate 195 by welding. That is, the front end portions of the horizontal frame 190a and the oblique frame 190b are connected and fixed by welding via the front reinforcing plate 194, and the rear end portion of the oblique frame 190b and the front upper portion of the reinforcing frame 190d are connected to the rear reinforcing plate 195. It is fixed by welding via.

  In this way, the horizontal frame 190a and the oblique frame 190b, and the oblique frame 190b and the reinforcing frame 190d constituting the feed chain frame 190 are fixed and reinforced by welding via the front and rear reinforcing plates 194 and 195, so that the bolt The strength of the feed chain frame 190 can be increased compared to the case of fastening or the like. As a result, it is not necessary to increase the size of each frame in order to eliminate insufficient strength, as in the case of bolt fastening, and an increase in the weight of the feed chain frame 190 can be prevented.

  Further, reinforcing members 196a, 196b, and 196c configured by a plurality of (three in this embodiment) pipes and the like are installed in the vertical direction between the horizontal frame 190a and the oblique frame 190b. These reinforcing members 196a, 196b, and 196c have their lower ends fixed to the upper surface of the horizontal frame 190a and upper ends fixed to the lower surface of the oblique frame 190b by welding or the like, respectively, and connecting the horizontal frame 190a and the oblique frame 190b. The strength is increased.

  As described above, the strength of the entire feed chain frame 190 can be improved by connecting and fixing the frames by welding using a reinforcing plate or a reinforcing member. Therefore, a gap between the front net presser 310 that presses the front net 291 of the receiving net 23 and a tooth 22a of the handling cylinder 22 that are to be described later can be kept constant, and problems such as unhandled parts in the threshing unit 20 are solved. .

  Further, the rotation fulcrum frame 190c is supported by two upper and lower support portions 200 and 200 provided on a support frame 197 formed by bending a pipe in a substantially inverted U shape when viewed from the back, which is fixed to the machine body. The feed chain frame 190 is configured to be pivotable laterally outward with respect to the airframe. Reinforcing plates 199 and 199 are installed and reinforced between the support frame 197 and the rear side wall 198 on the airframe side.

  As shown in FIGS. 32 and 33, the support portions 200 and 200 are provided with stays 190e and 190e integrally fixed to the rotation fulcrum frame 190c toward the left side, and forward with the support frame 197. The support stays 197a and 197a are integrally fixed toward the head and the pivot pins 201 and 201 are respectively formed. The front ends of the support stays 197a and 197a and the left end side of the stays 190e and 190e are arranged so as to overlap each other in plan view, and the support pins 201 and 201 are inserted into the overlapping positions, respectively. It is pivotally attached to the support frame 197, that is, pivotable with respect to the airframe.

  As shown in FIG. 30, driven sprockets 191a and 191b are rotatably provided at the front end and upper rear end of the oblique frame 190b, and the driven sprocket 191b is a guard fixed to the oblique frame 190b or the like with bolts or the like. The sides are covered by 202.

  In addition, a stay 203 is suspended downward from the middle portion of the lateral frame 190a toward the lower side, and a support arm 204 is fixed to the stay 203 with a bolt or the like and extended downward. A pipe-shaped rotary shaft 205 is pivotally supported via a bearing or the like, and a drive sprocket 191c is fixed on the rotary shaft 205. A drive shaft that protrudes from the machine body side is inserted into the shaft center portion of the rotary shaft 205 when the feed chain frame 190 is turned to the close side, and the drive shaft and the rotary shaft 205 are fitted relative to each other by a claw boss fitting or a key. It is fitted non-rotatably so that power can be transmitted.

  Further, one end of a rotating arm 206 is pivotally supported at the front lower part of the support arm 204, and a tension sprocket 191d is pivotally supported at the other end of the rotating arm 206. The tension sprocket 191d is a drive sprocket. It is arranged between 191c and driven sprocket 191a. One end of a spring 207 is locked to the rotating shaft of the tension sprocket 191d via a locking portion such as a stay, and the other end of the spring 207 is locked to one end of an adjuster 208. The other end of the adjuster 208 is attached to a stay 209 erected in the middle of the horizontal frame 190a so as to be adjustable in length.

  As described above, the feed chain 9 is wound around the driven sprockets 191a and 191b and the drive sprocket 191c, the tension of the feed chain 9 can be adjusted by the tension sprocket 191d, and the feed chain 9 is rotated by the rotation of the drive sprocket 191c. It is the composition which becomes. Then, each sprocket 191a, 191b, 191c, 191d and the feed chain 9 are configured to be supported by the feed chain frame 190, and the feed chain frame 190 is rotated with respect to the support frame 197 on the main body side, The feed chain frame 190 and the feed chain 9 are integrally rotated and opened.

Next, the opening / closing and locking mechanism of the feed chain frame 190 will be described with reference to FIGS. 30, 31, and 32. FIG.
As described above, the feed chain frame 190 can be opened and closed laterally with respect to the airframe with the support portions 200 and 200 located at the rear end thereof as pivot points. A front lock device 192 is provided at the front end portion of the feed chain frame 190, and a rear lock device 193 is provided at the rear end portion thereof. The feed chain frame 190 is fixed to the machine body side by these lock devices 192 and 193. To keep the closed state.

  The front lock device 192 and the rear lock device 193 are connected by a connecting rod 210, and the rear lock device 193 is also locked and released in conjunction with the lock and release of the front lock device 192.

  As shown in FIG. 31, the front lock device 192 is rotatably supported by the rotation fulcrum shaft 211 standing on the front portion of the horizontal frame 190 a of the feed chain frame 190 and the rotation fulcrum shaft 211. It comprises a lever 212 and an engaging portion 213 constructed by standing a pin or the like on the machine body frame 2. A midway portion of the lever 212 is pivotally supported by a rotation fulcrum shaft 211. A left side (outside the fuselage) of the lever 212 is a gripping portion 212a, and a concave portion is formed on the front side on the right side (inside the fuselage). The hook portion 212b is configured to be locked by engaging the engaging portion 213 with the hook portion 212b.

  In addition, a hole 212c is formed in the middle of the lever 212 (outside the machine body from the rotation fulcrum shaft 211). One end of a spring 214 is engaged with the hole 212c, and the other end of the spring 214 is It is latched by a latching portion 215 that projects from the feed chain frame 190 toward the left side. That is, the lever 212 is biased by the spring 214 so as to be pulled rearward from the hole 212c, and the hook 212b located on the opposite side of the hole 212c with respect to the rotation fulcrum shaft 211 is engaged with the front engaging portion 213. In the direction in which the front locking device 192 is locked.

  On the other hand, the rear locking device 193 includes a rotation fulcrum shaft 216, a hook 217 inserted and fixed to the rotation fulcrum shaft 216, and an engagement portion 218 fixed to one end of the frame on the machine body side. The hook 217 is engaged with the portion 218 to be locked.

  The pivot fulcrum shaft 216 is configured in a pipe shape, with a lower end portion on the rear portion of the horizontal frame 190a of the feed chain frame 190 and an upper end portion via a support plate fixed to the reinforcing frame 190d on the frame side. Thus, it is rotatably fitted on a support shaft erected between the upper and lower support plates. A hook 217 is fixed to the upper end of the rotation fulcrum shaft 216. The hook 217 extends inward of the machine body, and an engaging recess is formed on the front side of the extending portion. 218 can be engaged.

  The front lock device 192 and the rear lock device 193 are connected and interlocked by a connecting rod 210 provided in the front-rear direction of the machine body substantially parallel to the lateral frame 190a of the feed chain frame 190. That is, the front end portion of the connecting rod 210 is pivotally supported by the lever 212 of the front locking device 192 with a pin or the like, and the rear end portion of the connecting rod 210 is also fixed to the lower end of the rotation fulcrum shaft 216 of the rear locking device 193. The pivot plate is pivotally supported by a pin or the like, and the lever 212 of the front lock device 192 is pivoted about the pivot fulcrum shaft 211 in the unlocking direction so that the rear via the connecting rod 210. The lock device 193 is also unlocked.

Further, as described above, the feed chain frame 190 that can be opened and closed with respect to the airframe can be locked even in its open state, and an open-time lock device 220 is provided to maintain the maximum open state. It has been.
The opening lock device 220 will be described with reference to FIGS.

  The open-time lock device 220 is located at the rear end of the feed chain frame 190, and includes a pin 221 provided on the feed chain frame 190 side, a lock guide 222 having a rotation fulcrum on the machine body side, and the like. The pin 221 moves along a slide hole 228 formed in the lock guide 222 as the chain frame 190 is opened and closed.

  The pin 221 protrudes upward from a stay 223 fixed to the upper surface of the lower horizontal portion of the rotation fulcrum frame 190c of the feed chain frame 190 by welding or the like.

  The lock guide 222 is a substantially rectangular plate-like member in plan view, and its right end (machine body side end) is formed between the upper side wall 219 and the lower side wall 229 on the left side of the machine frame 33 (see FIG. 8). The joints are supported by pins 224 at the joints of the edge portions 219a and 229a formed to protrude toward the left side (outside the machine body), and the pin 224 serves as a pivotal support point. That is, one end portion of the lock guide 222 is formed with a bifurcated support portion 222a so as to have a U-shape when viewed from the front, and the joint portion of the edge portions 219a and 229a is sandwiched from above and below by the support portion 222a. In this state, the pin 224 is vertically penetrated, and the pin 224 is fixed to one of the support portion 222a side and the joint portion side of the edge portions 219a and 229a by welding or bolt fastening, and the pin 224 is rotated. The lock guide 222 is supported as a center. On the other hand, a handle 226 for operating the open lock device 220 is provided at the left end of the lock guide 222.

  In addition, a torsion spring 225 for biasing the lock guide 222 is provided at the rotation center of the lock guide 222 between the upper horizontal portion of the support portion 222a of the lock guide 222 and the head portion 224a of the pin 224. It is inserted and provided.

  Both end portions of the torsion spring 225 extend in the horizontal direction, and the tip portions of the torsion spring 225 are bent at substantially right angles downward to form support portions 225a and 225b. The airframe-side support portion 225a is inserted and fixed at the joint between the edge portions 219a and 229a, and the non-airframe-side support portion 225b is in contact with the rear side (the airframe rear side) of the lock guide 222. It has become. That is, the lock guide 222 is urged by the torsion spring 225 in the direction toward the front of the machine body (the F direction in FIG. 33, counterclockwise in plan view) with the pin 224 as the rotation center. The urging method of the lock guide 222 is not limited to the present embodiment, and a configuration using a spring other than the torsion spring 225 or other elastic members may be used.

  The slide hole 228 formed in the lock guide 222 is formed in a substantially L shape in plan view, and is a long hole having a width substantially the same as the diameter of the pin 221. When the feed chain frame 190 is closed, the pin 221 is The pin 221 is located at the right end, and in the maximum open state of the feed chain frame 190, the pin 221 is drilled so as to be positioned at the left end, that is, the notch 228a formed in the slide hole 228. . A stopper 227 for preventing the pin 221 from coming out of the slide hole 228 and smoothly sliding the pin 221 with respect to the slide hole 228 is inserted into a portion of the pin 221 protruding upward from the slide hole 228. It is fitted.

  In the lock device 220 having such a configuration, the pin 221 provided on the feed chain frame 190 side extends along the slide hole 228 as the feed chain frame 190 is opened from the closed state around the rotation center P. As the pin 221 slides, the lock guide 222 is also urged (F direction in FIG. 33). When the feed chain frame 190 approaches the maximum open state and the pin 221 reaches a corner of the L-shaped slide hole 228 in a plan view, the pin 221 is pushed by the torsion spring 225 of the lock guide 222 and the slide hole 228 is pushed. The cut-off portion 228a is automatically fitted, and the open state is maintained so that the feed chain frame 190 does not rotate toward the closing side.

  When the feed chain frame 190 is closed from the locked open state, the handle portion 226 is gripped and the lock guide 222 is rotated in the direction opposite to the biased direction (R direction in FIG. 33). Thus, the lock by the opening lock device 220 can be released, and the feed chain frame 190 can be turned to the closing side.

  Thus, by providing the lock device 220 at the time of opening and maintaining the maximum open state of the feed chain frame 190, the feed chain frame 190 may be closed unless the lock guide 222 is rotated in the release direction. In addition, the open state of the feed chain frame 190 is more reliably maintained as compared with the case where a conventional contact plate or the like is used. Accordingly, when the feed chain frame 190 is opened for maintenance or repair, the feed chain frame 190 is not inadvertently closed, and safety can be improved. Further, since the handle portion 226 is provided so as to protrude outward, it cannot be operated unless it is turned outward, and the body is caught between the feed chain 9 and the airframe unexpectedly by releasing the lock device 220 when opened. Nor.

  The urging direction of the lock guide 222 may be opposite to that of the present embodiment, and the shape of the slide hole 228 formed in the lock guide 222 is not limited to the present embodiment, and is formed into a bowl shape or a notch. It is also possible to adopt a configuration in which the opening degree of the feed chain frame 190 is held in stages by providing a plurality of portions 228a.

  Incidentally, as shown in FIG. 32, in order to drive the suction fan 40, the first conveyor 41, the second conveyor 42, and the second fan 43 described above in conjunction with each other, the upper side wall 219 on the left side of the machine casing 33 and Pulleys 40a, 41a, 42a, 43a are arranged on the respective rotation shafts on the outside of the lower side wall 229, that is, on the left side of the machine body 33, and a belt 231 is wound around these pulleys 40a, 41a, 42a, 43a. The pulley 43a is disposed so as to come into contact with the outside (back surface) of the belt 231. Two tension pulleys 232 and 232 for maintaining the tension of the belt 231 and restricting the track of the belt 231 are provided above the pulley 42a on the left side of the machine frame 33. It arrange | positions so that it may contact | abut from the outer side.

  On the rotation axis of the pulley 43a of the second fan 43, a tension arm 233 having a "H" shape in side view is pivotally supported around the rotation axis so as not to be affected by the rotation of the pulley 43a. A tension pulley 234 is rotatably supported at one end portion (front end portion) of the tension arm 233, and the tension pulley 234 is disposed so as to come into contact with the belt 231 from the inside. On the other hand, one end of a spring 235 for urging the tension arm 233 in a direction in which the tension pulley 234 presses the belt 231 from the inside is hooked to the other end portion (rear end portion) of the tension arm 233. Yes. The other end of the spring 235 is locked to one end of an adjuster 236 provided on a stay 232 a installed between the tension pulleys 232 and 232, and adjusts the tension of the belt 231 by the tension pulley 234. It is possible.

  A pulley 42b is fixed on the rotating shaft of the pulley 42a of the second conveyor 42, and a pulley 34a for driving the swing drive mechanism 34 is disposed behind the pulley 42a. A belt 237 is wound around 42b. A tension pulley 239 that is pivotally supported at one end of a tension arm 238 provided on the lower side wall 229 on the machine body side is disposed so as to come into contact with the belt 237 from the lower outer side. One end of the spring 241 is locked to the middle portion of the tension arm 238, and the other end of the spring 241 is locked to one end of an adjuster 243 provided on a stay 242 protruding from the lower side wall 229. Thus, the tension of the belt 237 by the tension pulley 239 can be adjusted.

  In such a configuration, since the pulley 40a of the suction fan 40 is provided on the machine body side, when the feed chain frame 190 is opened as described above, it is not necessary to remove the belt 231 and workability during maintenance is improved. . Further, by adding a second fan 43 provided in a large combine or the like as in the present embodiment, even if the number of driving points by the belt 237 increases, a single drive system is obtained by providing a plurality of tension pulleys. It becomes possible. Furthermore, by providing the pulley 42b for driving the swing drive mechanism 34 coaxially with the pulley 42a of the second conveyor 42, there is no need to separately provide a pulley for driving the swing drive mechanism 34. Since the pulley 42a is disposed so as to contact the belt 231 from the inside, the contact portion between the pulley 42a and the belt 231 is increased as compared with the case where the pulley 42a is disposed so as to contact from the outside (back surface) of the belt 231. Thus, an improvement in driving force and stable belt rotation can be obtained.

Next, a pre-guide (wrinkle presser auxiliary guide) 250 provided above the conveyance upstream side of the feed chain 9 will be described with reference to FIGS. 35 and 36. FIG.
The pre-guide 250 includes a cereal pressing bar 251, a support frame 252, connecting bars 253 and 254, a spring 255, and the like. At the traveling work position (described later), the conveyance upstream side of the feed chain 9 and the culm presser bar 251 are disposed so as to overlap in a side view. In other words, the culm presser bar 251 is arranged along the conveyance upstream side of the feed chain 9.

  The culm presser bar 251 is formed in a warped shape when viewed from the side, and its front end is bent upward to form a bent part. The bent part guides the culm, and the cereal presser bar 251 Grain meal is supplied to the feed chain 9. The grain presser bar 251 is supported via a support frame 252 and connecting bars 253 and 254 that are disposed above it.

  The support frame 252 is rotatably supported by a bracket at the distal end portion of the support rod 174 that supports the clip 171. That is, the support frame 252 is provided with a rotation support shaft 256 at the rear portion and the front portion of the support rod 174, and can rotate about the rotation support shaft 256. The support frame 252 is formed in a substantially “U” shape in cross section, and the open portion of the “U” shape is disposed downward.

  Further, an insertion hole of the connecting rod 254 is formed in the upper surface (the “U” -shaped unopened portion) of the support frame 252, and the upper end portion of the connecting rod 254 is inserted into the insertion hole. The upper end portion of 254 protrudes from the upper surface of the support frame 252. The connecting rod 254 is movable in the longitudinal direction with respect to the support frame 252. Further, a spring 255 is fitted on the upper portion of the connecting rod 254, and the lower end side of the spring 255 is fixed to the middle portion of the connecting rod 254. When the connecting rod 254 moves upward and the protruding portion from the upper surface of the support frame 252 becomes longer, the urging force of the spring 255 acts to shorten the protruding portion. A portion of the spring 255 and the connecting rod 254 where the spring 255 is externally fitted is covered with the support frame 252.

  Further, a connecting rod 253 is rotatably attached to the side surface of the support frame 252. For this reason, in the pre-guide 250, the culm presser bar 251 can swing with respect to the support frame 252. At this time, the spring 255 expands and contracts, and the protruding length of the connecting rod 254 from the upper surface of the support frame 252 changes. The culm presser bar 251 swings according to the amount of the culm between the pre-guide 250 and the feed chain 9, that is, according to the amount of the culm supplied to the upstream side of the feed chain 9.

  The pre-guide 250 configured as described above is rotatable about the rotation support shaft 256 on the upstream side of the feed chain 9 in the conveyance, and is a traveling work position (action position) indicated by a solid line in FIG. It is possible to manually switch between (a) and a handling work position (release position) (b) indicated by a two-dot chain line. When the pre-guide 250 rotates counterclockwise (FIG. 35) about the rotation support shaft 256, the pre-guide 250 switches to the traveling work position (A), while when it rotates clockwise (FIG. 35), the pre-guide 250 is handled. Switch to position (b).

  A spring 257 is interposed between the pin 258 inserted into the support frame 252 and the pin 259 attached to the bracket at the tip of the support rod 174 that supports the pin 171. That is, one end of the spring 257 is connected to the support frame 252 via the pin 258, and the other end is connected to the support rod 174 via the pin 259. The spring 257 rotates about the pin 259 as the pre-guide 250 rotates.

  At this time, the urging direction of the spring 257 is switched on the boundary of a straight extension line (XX line in FIG. 35) connecting the pin 259 and the rotation support shaft 256. When the pin 258 is below the line XX, the pre-guide 250 is subjected to an urging force for holding the pre-guide 250 at the traveling work position (A). On the other hand, when the pin 258 is above the XX line, a biasing force is applied to the pre-guide 250 so as to hold the pre-guide 250 in the hand-operating position (b).

  As described above, the biasing direction of the spring 257 is switched in two stages as the pre-guide 250 is rotated. This is a so-called fulcrum configuration. Thereby, on the one hand, the pre-guide 250 is reliably held at the traveling work position (A) and, on the other hand, is reliably held at the handling work position (B) by the urging force of the spring 257. When the pre-guide 250 is held at the travel work position (A), the upper portion of the feed chain 9 transport upstream side is covered by the pre-guide 250, and the culm presser bar 251 is along the transport upstream side of the feed chain 9. It becomes. In the traveling work position (A), the cereals harvested by the harvesting part while traveling are supplied to the feed chain 9 to perform threshing.

  On the other hand, when the pre-guide 250 is rotated upward and is held at the handling work position (b), the pre-guide 250 is stored above the feed chain 9 and the upper part on the upstream side of the feed chain 9 conveyance is Opened. The hand-operated work position (b) is switched when threshing is performed by manually supplying cereals that have been cut in advance to the feed chain 9.

  Switching between the traveling work position (A) of the pre-guide 250 and the handling work position (B) is performed by an operator located on the side of the combine feed chain 9 (right side of the machine body in this embodiment). In the present embodiment, the switching of the pre-guide 250 can also be performed by a driver in the cab 14 (control unit). In this case, the driver switches the pre-guide 250 by operating an operation lever 261 (operation tool) provided in the vicinity of the cab 14 (control unit).

Here, the switching operation (rotation operation) of the pre-guide 250 by the operation lever 261 will be described.
The operation lever 261 is disposed in the vicinity of the operator's cab 14, in the present embodiment, behind the operator's cab 14 and within the reach of the driver's hand. Specifically, it is arranged at the left rear of the cab 14 and at the right front of the handling chamber cover 21a, more specifically at the center of the left and right sides of the machine body. Moreover, the upper end part of the operation lever 261 protrudes from the chamber cover 21a (refer FIG. 1). Note that the position where the operation lever 261 is disposed may be within the driver's cab 14 and is not limited to the position described above as long as it is within the reach of the driver 14.

  The lower end of the operating lever 261 is connected and fixed to one end of the connecting rod 262, the other end of the connecting rod 262 is connected to one end of the operating rod 263 by a pin, and the other end of the operating rod 263 is connected to the pre-guide 250. The support frame 252 and the pin 264 are rotatably connected.

  The connecting rod 262 is rotatably supported by the handling chamber cover 21a, and both ends of the connecting rod 262 protrude from the upper side of the handling chamber cover 21a. That is, the connecting rod 262 penetrates the upper part of the chamber cover 21a in the left-right direction. And the part which protruded to the pre-guide 250 side is bend | folded below and formed.

  Thus, the pre-guide 250 is connected to the operation lever 261 via the link mechanism, specifically, the connection rod 262 and the operation rod 263. Thus, even if the hand is not reachable from the cab 14 to the pre-guide 250, the switching operation of the pre-guide 250 can be performed by the operation of the operation lever 261 by the driver. Holding. The operation lever 261 or the link mechanism may be connected to an actuator such as a motor or a cylinder, and the actuator may be connected to an operation member such as a switch so as to be switched by a button operation or the like.

  If the operation lever 261 is in the upright position shown by the solid line in FIG. 35, the pre-guide 250 is switched to the traveling work position (A), while the operation lever 261 is in the tilt position shown by the two-dot chain line in FIG. If there is, it is switched to the hand-operated work position (b).

  When the operation lever 261 is tilted forward from the upright position by the driver in the cab 14, the connecting rod 262 rotates counterclockwise (FIG. 35), and the operation rod 263 moves backward. To do. As a result, the pre-guide 250 rotates clockwise (see FIG. 35) about the rotation support shaft 256, and switches from the traveling work position (A) to the handling work position (B).

  On the other hand, when the operation lever 261 is operated backward from the tilted position, the connecting rod 262 rotates clockwise (see FIG. 35), and the operation rod 263 moves forward. As a result, the pre-guide 250 rotates counterclockwise (see FIG. 35) about the rotation support shaft 256, and switches from the handling operation position (B) to the traveling operation position (A).

  As described above, the operation lever 261 is provided in the vicinity of the cab 14, and the pre-guide 250 is rotated by the operation of the operation lever 261, so that the traveling work position (A) and the handling work position ( (B). Thereby, the rotation operation of the pre-guide 250 can be easily performed also by the driver in the cab 14. For example, even if the sub-worker located on the side of the feed chain 9 is not able to move both hands freely because of holding the harvested grain in both hands, the driver handles the pre-guide 250 by hand. It is possible to switch to the work position (b) and perform hand-handling work. In addition, after the handling operation is completed, even if the sub worker forgets the operation of returning the pre-guide 250, the driver can operate the operation lever 261 to return it. As a result, in the combine 1, operability and workability can be improved. In addition, the pre-guide 250 can also be switched directly between the traveling work position (A) and the handling work position (B) by the sub-worker turning directly. In this embodiment, the operation lever 261 and the pre-guide 250 are interlocked and connected by a link mechanism, but can be interlocked and connected by a wire and a spring.

Subsequently, the splicing guide 271 provided above the conveyance upstream side of the feed chain 9 will be described with reference to FIGS. 37, 38, and 39.
The inheritance guide 271 is disposed so as to overlap with the culm presser bar 251 of the pre-guide 250 described above in a side view, and is located on the inner side of the machine from the culm presser bar 251. Moreover, it overlaps with the feed chain 9 in a side view and a plan view. That is, the inheritance guide 271 is arranged along the upstream side of conveyance of the feed chain 9 and is attached to the auxiliary conveyance device or the harvesting frame of the harvesting unit.

  The front end portion of the splicing guide 271 is supported by the support frame 272, and the support frame 272 is attached to the rear end portion of the side frame 273 that supports the pulling / cutting unit 3 at the front of the machine body.

  The front end portion of the joint guide 271 is bent at a substantially right angle, and the bent portion extends leftward to form an extension portion 271a. The extending portion 271a is inserted through an insertion hole provided in the support frame 272, and the joint guide 271 is rotatably supported by the support frame 272. At the same time, the joint guide 271 is movable in the left-right direction with respect to the support frame 272. At the tip (left end) of the extending portion 271a, a pin 274 for preventing the support frame 272 from coming off from the insertion hole is inserted. The pin 274 restricts the movement of the connecting guide 271 in the left-right direction to the distance L1.

  Further, a projecting portion 271b projects from the front portion of the joint guide 271 in parallel with the extending portion 271a. A washer (such as a washer or ring) 275 is attached to the tip (left end) of the protrusion.

  The joint guide 271 is biased downward by a plate spring 276. The leaf spring 276 is formed in an approximately “T” shape in a side sectional view, and one end 276 a that extends shortly is fixed to the upper surface of the support frame 272 by a bolt. On the other hand, the lower one end 276b extending in a “T” shape is in contact with the projecting portion 271b of the joint guide 271 so that the urging force of the leaf spring 276 acts on the joint guide 271 via the projecting portion 271b. I have to. In this way, when the splicing guide 271 is pressed downward, the cereals are sandwiched and transported between the splicing guide 271 and the feed chain 9.

  Further, the washer 275 at the tip of the protruding portion 271b abuts against the left end surface of the leaf spring 276, so that the movement of the splicing guide 271 in the left-right direction is restricted.

  Further, a guide member 277 serving as a mechanism for regulating and holding the joint guide 271 in the vertical direction and the horizontal direction is fixed to the support frame 272. The guide member 277 is formed with a guide groove that is substantially L-shaped when viewed from the front, and the width of the guide groove is slightly larger than the diameter of the joint guide 271. The L-shaped guide groove includes a vertical groove 277a and a horizontal groove 277b, and the vertical groove 277a is formed to open downward.

  In the state where the joint guide 271 is pressed downward by the leaf spring 276, the joint guide 271 is fitted into the vertical groove 277a.

  In a normal state, the joint guide 271 is pressed downward by the urging force of the leaf spring 276 and is overlapped with the feed chain 9 in a side view.

  However, during maintenance, the feed chain 9 may be rotated to open the left side of the machine body. In this case, if the splicing guide 271 is left in a normal state, it interferes with the feed chain 9 and hinders the rotation of the feed chain 9. Therefore, it is necessary to lift the joint guide 271 upward against the urging force of the leaf spring 276 so as not to interfere with the feed chain 9.

The inheritance guide 271 when the feed chain 9 is rotated during maintenance or the like will be described.
First, one end 276 b of the leaf spring 276 is lifted upward so that the urging force of the leaf spring 276 does not act on the splicing guide 271. Thus, the splicing guide 271 can be rotated in the vertical direction. Then, the joint guide 271 is lifted and rotated upward. At this time, the inheritance guide 271 is guided by the vertical groove 277a of the guide member 277, and rotates until it comes into contact with the upper end of the groove 277a. Thereby, the splicing guide 271 does not overlap with the feed chain 9 in a side view, and the feed chain 9 can be rotated.

  Next, the splicing guide 271 is moved to the right by the distance L1. At this time, the leaf spring 276 is lifted to a position where the washer 275 at the tip of the protrusion 271b of the splicing guide 271 does not interfere with the one end 276b of the leaf spring 276. At this time, the splicing guide 271 moves while being guided by the left and right grooves 277 b of the guide member 277. As a result, the inheritance guide 271 does not overlap with the feed chain 9 in plan view.

  At this time, since the joining guide 271 is fitted in the groove 277b, the turning of the joining guide 271 in the vertical direction is restricted by the groove 277b. Then, when the lifting of the leaf spring 276 is released, the joining guide 271 is pressed downward by the urging force of the leaf spring 276 so that the position of the joining guide 271 is maintained. That is, the splicing guide 271 is held in a state where it does not overlap with the feed chain 9 in plan view.

  In the conventional combine structure, when the feed chain is rotated, the joint guide is fixed upward using a chain or the like. In this case, it is necessary to reverse the inheritance guide upward, and it is necessary to reverse the center of gravity. For this reason, there are many space restrictions, and since it was fixed in an unstable state, it returned to the original position.

  On the other hand, in this embodiment, a mechanism is provided for holding the splicing guide 271 at a position above the upstream side of conveyance of the feed chain 9 and not overlapping with the feed chain 9 in a side view. This holding mechanism has a simple configuration in which a support frame 272, a washer 275, a leaf spring 276, a guide member 277, and the like are provided at the front end of the splicing guide 271. This eliminates space constraints. Further, it can be stably held at a position not overlapping with the feed chain 9 in a side view.

Next, the said handling cylinder supply start end part 280 of the threshing part 20 is demonstrated.
As shown in FIGS. 4 and 40, the handling cylinder supply start end 280 is formed on the entrance side of the handling chamber 21 and in front of the swing sorting device 31. The handling cylinder supply start end 280 has a guide guide 281 extending forward from the front end of the receiving net 23 provided around the lower part of the handling cylinder 22 in a side view and an upper guide for guiding the cereals on the lower and front surfaces. A plate 282 is provided, and a pulley or the like for transmitting power to the rotating shaft of the handling cylinder 22 is accommodated.

  The supply guide plate 281 is fixedly held on the machine casing 33. The supply guide plate 281 is made of an iron plate, an elastic body, or the like, and is gently curved in the left-right direction in accordance with the outer peripheral shape of the handling cylinder 22 and is formed in a bowl shape when viewed from the front. Then, in the side sectional view, the supply guide plate 281 has a front portion as an inclined portion that is rearwardly lowered so that grains and the like can easily flow into the rear handling chamber 21 (threshing portion 20), and the rear portion is connected to the front portion of the receiving net 23. Therefore, it is configured to be substantially parallel (concentric) with the outer peripheral surface of the handling cylinder 22 so that it is horizontal at the lower end.

  The upper guide plate 282 prevents the culm from being entangled with the rotating shaft or the like of the handling cylinder 22 by guiding the culm conveyed by the feed chain 9 to the lower part of the handling cylinder 22. The upper guide plate 282 is fixed to the frame of the handling chamber 21 so as not to become unstable.

  In this way, the grain guide structure of the barrel supply start end portion 18 formed by the supply guide plate 281 and the upper guide plate 282 has a substantially “U” shape when viewed from the front and opens the side on the feed chain 9 side. So that the cereals conveyed to the rear part of the machine body by the cereal conveying device 170 comprising the feed chain 9 and the like are guided between the supply guide plate 281 and the upper guide plate 282 and can be conveyed to the threshing unit 20 without delay. I have to.

  As shown in FIG. 41, a feed guide 283 and a lead plate 284 are provided as scattering guides on the inner surface of the handling chamber 21 on the feed cylinder 9 on the side opposite to the feed chain 9 (right side in the traveling direction). And are provided. More specifically, a lead plate 284 for feeding made of a plate-like member is provided at the front portion in the treatment chamber 21 on the back side (closed side) of the “U” -shaped opening in front view of the handling cylinder supply start end portion 280, A feed guide 283 that is convexly formed at a side position of the lead plate 284 is provided, and the feed guide 283 and the lead plate 284 are located above the rear portion of the supply guide plate 281 and receive the outer frame of the upper guide plate 282. It is provided on a hook-like connecting portion 285 formed between the outer frame of the net 23.

  The feed guide 283 has a substantially triangular pyramid shape and is provided so as to extend over the corners of the upper guide plate 282 and the connecting portion 285 and bulges toward the barrel 22, and guides the tip of the cereal to the barrel 22 for supply It is guided so as not to flow backward to the start end 280 side. Further, a lead plate 284 is provided continuously above the inner surface of the handling chamber 21 of the feed guide 283, and is disposed in front of the receiving net 23. The lead plate 284 is provided so as to substantially match the inclination of the dust feed valve 24 disposed on the inner peripheral surface of the upper portion of the handling chamber 21, and the extension direction of the plate surface of the lead plate 284 is the plate of the dust feed valve 24. Is directed to the surface. In this way, the tip is aligned with the lead plate 284 so as to be in a direction substantially perpendicular to the feed chain 9 in the handling chamber 21 so as to be threshed by the handling cylinder 22, and swarf generated at the threshing, shed grains, etc. It is guided so as to flow parallel to the dust delivery valve 24. Then, by reducing the sawdust and the like that had been scattered to the handling cylinder supply start end 280 side into the handling chamber 21, loss is reduced.

  The lead plate 284 is configured by a plate-like member such as an iron plate, and is configured in consideration of strength, wear resistance and the like so as not to be deformed by the pressure in the handling chamber 21. Further, as shown in FIG. 42, the lead plate 284 is bent in an L shape and is erected vertically to the inner peripheral surface of the handling chamber 21. The fixing portion 284a on the bottom surface of the lead plate 284 is fastened to the inner side surface of the handling chamber 21 with bolts 286, 286, etc., and is configured to be detachable. For this reason, in the unlikely event that the lead plate 284 is damaged, the replacement work can be easily performed, and the maintainability can be improved.

  In this way, by arranging the lead plate 284 on the inner surface of the handling chamber 21 opposite to the feed chain 9, which is the handling cylinder supply start end portion 280 of the threshing unit 20, the shavings and the like in the handling chamber 21 are handled. It is possible to prevent scattering to the cylinder supply start end portion 280 and guide it to the dust feed valve 24 side to guide the end portion side of the handling chamber 21. And the grain etc. which were conventionally scattered to the barrel supply start end part 280 can be collect | recovered, and a loss can be reduced.

  The scattering prevention guide composed of the feed guide 283 and the lead plate 284 may be disposed on the back side of the upper guide plate 282 opposite to the feed chain 9 of the barrel supply start end 280 of the threshing unit 20, In this case, the same effect as described above can be obtained.

Then, the structure of the receiving network 23 of the threshing part 20 is demonstrated using FIGS. 43-45.
The receiving net 23 is divided into two parts, with the glen tank 13 side (traveling direction right side) as the back net 290 and the feed chain 9 side (traveling direction right side) as the front net 291. 44 (see FIG. 44), the back net 290 and the front net 291 are connected by a connecting portion 295.

  The periphery of the back net 290 and the front net 291 is supported by a frame having an L-shape in cross section. In the connecting portion 295, the contact portion between the back net 290 and the front net 291 is arranged in the radial direction of the handling cylinder 22. Net frames 290a and 291a are formed by bending substantially outward at a right angle, and at this connecting portion 295, pins 292a, 292a, and 292a are connected to either the back net 290 or the front net 291 from the net frame. An insertion hole is formed in the other mesh frame corresponding to a position where the pin 292a is projected, and the front mesh 291 is pushed in. Thus, the pin 292a is fitted into the insertion hole to connect the back net 290 and the front net 291. Note that the position and number of the pins 292a are not limited, and the connection configuration is not limited, and may be a structure in which irregularities are fitted.

  Further, a net frame 290b is formed on the back side of the back net 290 in the same manner as the net frame 290a, and pins 292b, 292b, and 292b are positioned in the longitudinal direction of the machine body from the net frame 290b. The rear net 290 is fixed to the main unit by fitting these pins 292b to stays 296 which are fixing members provided on the main unit side, and is projected substantially in the same direction as the pins 292a. 23 is fixed below the barrel 22.

  As shown in FIG. 44, the receiving net 23 is formed in a substantially L shape in plan view by a back net 290 and a front net 291, and the front net 291 protrudes slightly in the front-rear direction. The receiving net 23 is configured by fixing a thin metal plate 294 on a net frame 293, and the plate 294 is formed with a net-like hole 294a that is almost uniformly formed on the entire surface. Is formed. And the soot and shavings etc. which were handled on the receiving net | network 23 by these teeth 22a, 22a ... are leaked through these extraction holes 294a. In this embodiment, the shape of the hole 294a is a square, but it may be a circle or a polygon.

  As described above, the protruding portion 291 c of the receiving net 23 having a substantially L-shape in plan view is the latter half of the cereal conveyance path 9 a by the feed chain 9 and is located below the latter half of the handling cylinder 22. On the upper surface of the protruding portion 291c, a partition 297 having a predetermined height formed of a metal plate or the like is disposed between the handle teeth 22a in parallel with the moving direction of the handle teeth 22a due to the rotation of the handle cylinder 22. A plurality of protrusions are provided at equal intervals in the longitudinal direction of the body so as to be positioned. In the projecting portion 291c provided with a plurality of partitions 297, the cereals conveyed by the feed chain 9 are lifted upward by the partitions 297 and pressed downward by the teeth 22a, 22a,. It is possible to make the handle teeth 22a, 22a.

  The receiving network 23 is configured to be detachable from the side of the machine body. That is, as described above, the feed chain frame 190 configured to be openable and closable with respect to the aircraft side is opened, and is drawn out in an arc along the rail provided on the frame 298 provided on the aircraft side from the aircraft side. It can be removed by inserting or inserting. Therefore, stoppers 299 and 299 are provided on the connecting portion 295 side of the net frame 293 before and after the back net 290, respectively. In the stoppers 299 and 299, a plate spring 299a formed by folding a part of a plate-like member into a mountain shape on a mesh frame 293 is fastened and fixed by a bolt or the like, and the plate spring 299a is fixed to the frame 298 on the airframe side. It can be locked using a stopper 299b or the like so that the back net 290 does not slip when the front net 291 is pulled out for maintenance or the like.

  As shown in FIG. 45 and FIG. 46, in the receiving net 23 having such a configuration, the front net 291 located on the left side of the machine body that is likely to be left unhandled and the tip of the tooth 22a planted on the outer periphery of the barrel 22 It is possible to adjust the gap (interval) with the rotation trajectory T of the part, and a position adjusting part 300 for that purpose is provided. That is, a U-shaped bent portion 291d is formed at the left end (feed chain 9 side) end of the front mesh 291, and an L-shaped net frame 291b is fixed inside the bent portion 291d. The frame 291b and the bent portion 291d are used as fitting portions so that the upper end side of the fixing plate 306 serving as a fixing member bent in a crank shape can be inserted therebetween.

  The position adjustment unit 300 includes a bracket 305 fixed to the body body side, a fixing plate 306 that is a plate-like member for position adjustment disposed at the upper end portion of the bracket 305, and the fixing plate 306 as a bracket. It comprises a fixture 307 for fixing to 305 and a shim 309 for adjusting the interval.

  The lower end of the bracket 305 is fastened and fixed to one end of the frame of the handling chamber 21 by a bolt 304 at the lower left side of the front net 291, and the upper end is directed to the net frame 291 b at the left end of the front net 291. It is extended. A fixing plate 306 is provided at the upper end of the bracket 305 so that one end of the fixing plate 306 is in contact with the mesh frame 291b of the front mesh 291, and the base side is fixed by a fixture 307 including a pin 307a and a nut 307b. ing. That is, the pin 307a is inserted into the bracket 305 with the fixing plate 306 and the shim 309 inserted into the head 307c, and tightened and fixed by the nut 307b.

  In such a structure, the front mesh 291 is pushed into the back mesh 290 side, and the pin 292a is inserted into the connecting portion 295 with the back mesh 290, and at the same time, a fixing plate is interposed between the mesh frame 291b and the bent portion 291d. 306 is inserted and is pressed and fixed by a front net presser 310 to be described later. At this time, if it is desired to reduce the gap between the tip of the tooth-handling 22a and the rotation trajectory T, the fixing plate 306 presses the mesh frame 291b by increasing the number of shims 309, so that the drum 22 is handled. Move closer to the side. Further, when it is desired to widen this interval, the mesh frame 291b can be moved outward by reducing the number of shims 309. That is, the front mesh 291 rotates about the connecting portion 295 with the back mesh 290, and the gap can be adjusted. The gap can be adjusted in the same manner by preparing a plurality of shims having different thicknesses in advance and replacing these shims. However, although the receiving network is configured by the front network 291 and the back network 290, it may be configured by a single network or divided into three or more.

  In this way, the position adjustment unit 300 is formed in the portion for fixing the fixing plate 306 interposed between the front mesh 291 and the bracket 305, and the number of shims 309 arranged in the position adjustment unit 300 can be increased or decreased. By adjusting the thickness, the gap (interval) between the front net 291 and the rotation trajectory T at the tip of the tooth-handling 22a can be adjusted. Thus, by making it possible to adjust the distance between the front mesh 291 and the rotation trajectory T at the tip of the tooth-handling 22a, it is possible to ensure a prescribed distance according to the type of crop to be harvested. As a result, it is possible to efficiently shed only the tip part while preventing the ear of the cereal from occurring when the gap is narrower than the desired interval, and conversely, the interval is wide. This makes it possible to prevent unhandled leftovers and improve threshing accuracy.

  Further, the position adjusting unit 300 interposes the shims 309 on the pins 307a for fixing the fixing plate 306 attached to the bracket 305, and increases or decreases the number of the shims 309 or replaces the shims 309 with different thicknesses. Since it has a simple configuration, it is possible to easily adjust the distance between the front net 291 and the rotation trajectory T at the tip of the tooth 22a.

  Furthermore, a plurality of the position adjusting units 300 having such a structure can be provided in the longitudinal direction of the machine body, that is, in the longitudinal direction of the handling cylinder 22. In this case, a plurality of the brackets 305 are provided at arbitrary intervals within the range of the length of the front net 291 in the front-rear direction, and the position adjusting unit 300 is configured at each position.

  By providing a plurality of position adjusting units 300 in the longitudinal direction of the machine body in this way, it is possible to adjust the position of the front mesh 291 separately at each position, and the rotation trajectory of the front mesh 291 and the tooth handling 22a at each position. It is possible to adjust the interval with T and finely adjust the interval according to the type of crop to be harvested and the threshing state of the cereal. The accuracy can be improved.

Next, the configuration of the front net presser 130 will be described.
As shown in FIG. 47, a front net retainer 310 is disposed on the side of the receiving net 23 and on the feed chain 9 side. The front net presser 310 is formed to have substantially the same radius of curvature as that of the receiving net 23, and is disposed on an extension of the front net 291 that forms the receiving net 23. Further, the front net presser 310 is integrally provided by being fixed to a feed chain frame 190 that supports the feed chain 9 so as to be opened and closed, and is configured to be opened and closed together with the feed chain frame 190. In such a configuration, the feed chain frame 190 around which the feed chain 9 is wound is locked to the machine body side and pressed so that the side end of the front net 291 on the feed chain 9 side does not warp.

  In addition, a plurality of bars and the like project in the same direction (extension upper) as the partition 297 provided on the protrusion 291c of the front net 291 on the side surface of the front net presser 310 (on the side of the handling cylinder 22). In the same manner as the partition 297, the rod is lifted upward by this bar and is pressed downward by the tooth handling teeth 22a, 22a... -22a ... can be contacted.

  Such a front screen retainer 310 has a structure capable of adjusting the position with respect to the handling cylinder 22. In other words, the gap (interval) S between the inner side surface 310a, which is the surface of the front net presser 310 on the handle 22 side, and the rotation trajectory T of the tip of the handle 22a of the handle 22 can be adjusted. is there. Hereinafter, this gap adjustment structure will be described with reference to FIGS. 30 and 47. FIG.

  The side of the front mesh presser 130 provided integrally with the feed chain frame 190 and the side surface on the side of the feed chain 9 are provided at a plurality of locations (three locations in this embodiment) at approximately equal intervals in the longitudinal direction of the machine body. Adjusting plates 311a, 311b, and 311c for projecting and fixing the fore net presser foot 310 to the feed chain frame 190 are projectingly provided.

  These adjustment plates 311a, 311b, and 311c are fixed to an upper stay 312 and a lower stay 313, which are arranged in parallel in the vertical direction. The upper stay 312 and the lower stay 313 are connected to a horizontal frame 190a that constitutes the feed chain frame 190. The reinforcing members 196a, 196b, and 196c provided between the oblique frame 190b and the reinforcing frame 196c are respectively fixed at two locations in the upper and lower directions. That is, an upper stay 312 and a lower stay 313 each having a U-shape in a side view are fixed to each of the reinforcing members 196 by welding or the like, and each adjustment of the front presser foot 310 is adjusted to the upper stay 312 and the lower stay 313. The plate 311 is fixed by bolts 314 and 315 so that the position can be adjusted.

  In each adjustment plate 311, a normal circular bolt hole is formed in the upper stay 312 interposed in the upper fixing portion, and the upper portion of the adjustment plate 311 is positioned by the bolt 314 through the upper stay 312. On the other hand, a long hole 316 is formed in the lower stay 313 interposed in the lower fixing portion of each adjustment plate 311 in the direction toward the handling cylinder 22 of the front screen retainer 310, and the bolt 315 is positioned via the lower stay 313. It has a structure that can be fixed in an adjustable manner. In other words, the long hole 316 drilled in the lower stay 313 has a shape that follows the track of the bolt 315 when the front mesh presser 310 is rotated to the side of the machine body around the bolt 314 of the upper fixing portion. The above-described clearance S is adjusted by rotating the front mesh presser 310 around the bolt 314 with the bolt 314 of the upper fixing portion fastened to such an extent that the front mesh presser 310 can rotate. The structure is possible.

  With such a structure, at the positions of the adjustment plates 311a, 311b, and 311c of the front net presser 310, the clearance S, that is, the inner side surface 310a of the front net presser 310 and the tip of the handle 22a of the front barrel 22 are rotated. The distance from the track T can be adjusted. It should be noted that the number and shape of the adjustment plates provided in the near net presser 310 are not limited to the present embodiment. Also, the bolt hole on the upper stay 312 side of the upper fixing part of the front net retainer 310 is a long hole, the lower fixing part side is the center of rotation, and long holes are formed in both the upper stay 312 and the lower stay 313. In addition, the front net retainer 310 can be structured such that its position can be adjusted at the upper and lower fixing portions.

  As described above, the front net retainer 310 can be fixed to the feed chain frame 190 so that the position of the front net retainer 310 can be adjusted. The gap S with the trajectory T can be adjusted, and a prescribed interval according to the type of crop to be harvested can be secured. As a result, it is possible to efficiently shed only the tip of the grain while preventing the ear of the cereal from occurring when the gap S is narrower than a desired interval, and conversely, the handling that occurs when the gap S is wide. This makes it possible to prevent leftover and improve threshing accuracy.

  Further, by providing a plurality of such position adjustment positions of the front net presser 310 in the longitudinal direction of the machine body, that is, in the longitudinal direction of the handling cylinder 22, it is possible to adjust the interval of the gap S at each position and harvest. Fine adjustment of the gap S in the cereal conveyance route can be performed according to the type of crop and the threshing state of the cereal, so that cutting of the ears and unhandling can be prevented, and threshing accuracy can be further improved.

Next, the waste transporting device 320 will be described with reference to FIGS. 48 and 49. FIG.
The waste transporting device 320 transports the waste transported from the feed chain 9 of the grain transporting device 170 to the rear of the machine body by the waste transporting chain 10, and the waste is separated from the waste transporting chain 10 at that time. By changing the falling position, the cutting cutter device 321 cuts the material into the field, or releases it without cutting, or changes the position as it is bundled with the bundling device and dropped into the field. It is.

  The waste transporting device 320 mainly includes the waste transporting chain 10, the waste catching guide 330, the front support bar 331, the spring 332, the rail body 333, the sliding rollers 334 and 335, the rear support bar 336, and the spring 337. , And a link mechanism 338 and the like.

  The waste transport chain 10 extends from the rear end side of the feed chain 9 toward the right rear. The waste chain 10 is provided with an auxiliary waste transport chain 325 in parallel. The stock side of the waste is held by the waste transport chain 10 and the tip side of the waste is held by the auxiliary waste transport chain 325. Thus, the waste is conveyed backward. Further, an evacuation pinching guide 330 is disposed below the evacuation conveyance chain 10.

  The rejection pinching guide 330 is composed of a main guide 340 and a sliding guide 341, and the main guide 340 is horizontally provided in the left-right diagonally horizontal direction. The main guide 340 is a round bar-shaped (cylindrical) member having a bent portion 340a bent at one end (inlet side, left side) into a substantially "<" shape, and the bent portion 340a feeds. It arrange | positions toward the terminal end side of the chain 9, and makes it easy to convey while pinching the culm between the waste conveying chain 10 and the main guide 340.

  Further, one end (upper end) of the front support bar 331 is pivotally attached to the base of the bent portion 340a of the main guide 340, and the other end is fixed to the threshing machine frame 345 in a U shape. A direction in which the main guide 340 is close to the waste transporting chain 10 by a spring 332 that is inserted into holes formed on the upper and lower surfaces of the mounting member 343 and is externally fitted to the front support bar 331 in the mounting member 343. It is biased (upward).

  The rail body 333 is a substantially inverted U-shaped member in cross-sectional view, and is fixed to the lower surface of the body portion of the main guide 340 so that the longitudinal direction thereof is substantially parallel, and the slide guide 341 is slidably received from below.

  The sliding guide 341 is a substantially L-shaped round bar (cylindrical) member whose one end (entrance side, left side) is bent. The bent portion 341a of the sliding guide 341 has a starting end extending downward, a horizontal portion is accommodated in the rail body 333, and on the sliding rollers 334 and 335 provided at appropriate intervals below the rail body 333. Is supported by the sliding rollers 334 and 335 so as not to fall off the rail body 333 and to be slidable in the longitudinal direction.

  One end (upper end) of the rear support bar 336 is pivotally attached to the rear part of the rail body 333 (the one far from the bent part 340a of the main guide 340) and the other end is fixed to the combine body. The rail body 333 (the main guide 340) is inserted into the holes formed in the upper and lower surfaces of the mounting member 344, and is externally fitted to the rear support rod 336 in the mounting member 344. It is urged in the direction (upward) close to.

  With the above configuration, when the waste is not being transported by the waste transport chain 10, the body portion of the main guide 340 and the longitudinal direction (transport direction) of the waste transport chain 10 are spaced apart from each other by a predetermined distance. Are supported by springs 332 and 337 so as to be substantially parallel to each other.

  On the other hand, when the amount of waste transported by the waste transport chain 10 increases, the main guide 340 is pushed downward against the biasing force of the springs 332 and 337. At this time, the front support bar 331 and the rear support bar 336 are pivotally attached to the main guide main guide 340 and the rail body 333, respectively. The body portion of the guide 340 can take an angle that is not parallel to the longitudinal direction of the waste transporting chain 10, and the waste can be reliably transported rearward.

  Incidentally, as shown in FIGS. 50 and 51, the front support bar 331 that supports the front process side of the main guide 340 and serves as a fulcrum is disposed outside the threshing machine frame 345. Since the support bar is arranged inside the threshing machine frame, the diameter of the suction fan arranged in the threshing machine frame is increased or the arrangement position is changed in order to improve the sorting performance in the sorting unit. If this happens, the fan casing that covers the suction fan may interfere with the front support rod, and the diameter of the suction fan cannot be changed to a required size. In addition, even if the front support bar is arranged so as to avoid interference with the suction fan casing, the arrangement position of the front support bar is limited, so that the necessary stroke of the sliding guide cannot be secured. was there.

  Therefore, in this embodiment, the front support bar 331 is arranged outside the threshing machine frame 345 with respect to the suction fan 40 arranged inside the threshing machine frame 345. That is, the attachment member 343 is fastened to the outer side surface of the threshing machine frame 345 by a fastening member, and the front support bar 331 is inserted into the hole provided in the attachment member 343 as described above.

  Therefore, since the interference between the suction fan casing 161 and the front support bar 331 can be avoided regardless of the diameter and arrangement position of the suction fan 40, the diameter of the suction fan 40 can be set to a necessary size. . In addition, a stroke necessary for the sliding guide 341 can be secured.

  Subsequently, a sliding method of the sliding guide 341 will be described. The sliding guide 341 can be slid by the operation of an operation lever provided in the control unit via a link mechanism 338 provided below the rail body 333.

  As shown in FIGS. 51 and 52, the link mechanism 338 mainly includes an operation arm 350, an attachment member 351, a pin 352, a rotation arm 353, a rotation boss 354, an attachment member 355, a rotation arm 356, and the like. ing.

  The operating arm 350 is formed of a long and thin plate-like member, and a long hole is formed in a connecting portion on both sides thereof to constitute an allowable portion. That is, the locking hole 350a is formed in one end (rear side) of the operating arm 350, and the long hole 350b is formed in the other end (front side). The locking hole 350a has a slightly long oval shape, and is connected by inserting the tip of the bent portion 341a of the sliding guide 341 (see FIG. 49). Thus, the main guide 340 is configured to move up and down in conjunction with the sliding guide 341 by inserting the sliding guide 341 into the locking hole 350a of the operating arm 350 so as to be slidable up and down. As a result, even if the waste is transported and the distance between the main guide 340 and the sliding guide 341 and the waste transport chain 10 is widened or narrowed, the bent portion 341a does not receive a large resistance and moves up and down. Even after operating the switching lever, it can slide easily. In addition, the waste can be smoothly conveyed backward without disturbing the posture of the waste.

  Further, a long hole 350b drilled in the other end (front side) of the operating arm 350 is connected to the airframe side via a pin. That is, the pin 352 is passed through the elongated hole 350b, and the pin 352 is fixed to an attachment member 351 fixed to the combine body. Thus, during the switching operation, the operating arm 350 can slide and rotate along the pin 352, but does not fall off the mounting member 351.

  A distal end portion (front portion) of the rotation arm 353 is pivotally attached to the middle portion of the operation arm 350 so as to be rotatable. The base part (rear part) of the rotating arm 353 is fixed to a rotating boss 354, and the rotating boss 354 is pivotally attached to a rotating shaft 355a of a mounting member 355 fixed to the combine body. Yes. In addition, a base portion of a rotation arm 356 is fixed to the rotation boss 354, and one end of an operation wire 357 is attached to a distal end portion of the rotation arm 356. The other end of the operation wire 357 is connected to an operation lever (not shown) provided in the cab 14. Further, a spring 358 is interposed between the middle part of the rotating arm 353 and the combine body. The spring 358 urges the rotating arm 353 and the rotating arm 356 to rotate clockwise (toward the discharge and discharge side) about the rotating shaft 355a in plan view (see FIG. 52). .

  When an operation lever (not shown) provided in the cab 14 is operated to the “cut” side, the operation wire 357 is pulled toward the cab 14 against the spring 358, and the rotary arm 356 and the rotary arm 353 are pulled. Is rotated counterclockwise in plan view (see FIG. 52) about the rotation shaft 355a. At this time, the operating arm 350 is rotated clockwise in plan view (see FIG. 52) about the pin 352, and the sliding guide 341 is slid to the “removal cutter (cutting) position” shown in FIG. It is. At this time, while the sliding guide 341 moves linearly, the rear part of the operating arm 350 rotates. However, since the operating arm 350 and the pin 352 are pivotally attached via the elongated hole 350b, the rotating guide 350 rotates. The trajectory of both ends of the operating arm 350 during movement (the end where the locking hole 350a and the long hole 350b are formed) is allowed to be a straight line in a substantially longitudinal direction in plan view.

  Therefore, the sliding guide 341 in which the bent portion 341a is fitted in the locking hole 350a is a position protruding from the rear of the rail body 333 along the rail body 333 (when the cereal is dropped or directly dropped on the field after binding) The position slides smoothly from the position) to the position accommodated in the rail body 333 (position when the grain chopping is shredded by the reject cutter device 321). Further, when the operation lever is rotated in the reverse direction to the “release position”, the rotating arms 353 and 356 are rotated clockwise in plan view (see FIG. 52) by the biasing force of the spring 358, The operating arm 350 is rotated counterclockwise, and the sliding guide 341 is slid to the protruding position (right side) so that the waste is not guided to the waste cutter device 321.

  By configuring as described above, the position when the slide guide 341 is manually dropped or dropped directly onto the field after bundling or directly dropped without using an actuator such as a motor, and the waste cutter device 321 is used. It is possible to slide in the horizontal (substantially left and right) direction to the position when shredding at, and this left and right movement and the vertical sliding of the bent portion 341a can be performed substantially simultaneously, so that smooth It can be slid, and it is less likely to cause warping during the switching operation, improving the reliability of the device. Further, only the single operation wire 357 transmits the operation on the side of the cab 14 and the operation amount can be easily adjusted.

Next, the waste transport chain 10 will be described with reference to FIGS. 48 and 54 to 56.
The waste transport chain 10 includes a plurality of link plates 361. Each link plate 361 is formed in a convex shape that protrudes outward, and the stock side of waste is held between the link plates 361 and 361. Further, a tine 325a is intermittently provided on the link plate constituting the auxiliary waste transport chain 325, and the front end side of the waste is held between the tines 325a and 325a. In this way, the waste transported by the waste transport chain 10 is transported backward while being more reliably held by the auxiliary waste transport chain 325.

  The waste transport chain 10 is wound around a front drive sprocket 362 and a rear driven roller 363. Moreover, the axial direction of the drive sprocket 362 and the driven roller 363 is the horizontal direction. Therefore, the waste transport chain 10 travels on an elliptical endless track in the vertical plane. The same applies to the auxiliary waste transport chain 325 that is parallel to the waste transport chain 10.

  The vertical plane on which the waste transporting chain 10 travels is defined as the travel surface of the waste transporting chain 10, and hereinafter, the direction related to the waste transporting chain 10 is defined with reference to the travel surface.

  The drive sprocket 362 of the waste transport chain 10 is powered by a belt transmission mechanism 323 and a transmission case 324 in which the drive transmission mechanism is housed from a cylinder driving shaft 322 that drives the cylinder 22 of the threshing unit 20. Is transmitted. Further, the power from the barrel drive shaft 322 is also transmitted to the auxiliary waste transport chain 325 via the transmission case 324, and the waste transport chain 10 and the auxiliary waste transport chain 325 are driven in synchronization. .

  As shown in FIGS. 54 and 55, the driven roller 363 is rotatably supported by a roller guide 364. The roller guide 364 includes a pair of guide plates 365 and 365 disposed on the left and right of the traveling surface of the waste transport chain 10. Between the guide plates 365 and 365, a rotation support shaft 366 of the driven roller 363 is provided, and bridge members 379, 379,... For connecting and fixing the guide plates 365 and 365 are provided.

  On the other hand, the drive sprocket 362 is rotatably supported by a chain guide 367 that guides the waste transport chain 10.

  As shown in FIG. 56, the chain guide 367 is formed in a U shape in a cross-sectional view. The overall shape of the chain guide 367 is the upper and lower parallel portions 367a and 367b and the connecting portions that connect the parallel portions 367a and 367b. 367c.

  The waste transport chain 10 is provided so that the inner surfaces of the link plates 361, 361,... Of the waste transport chain 10 are close to the upper and lower ends of the chain guide 367, and roller pins that connect the left and right link plates 361, 361. Is guiding. The waste transport chain 10 is guided by the chain guide 367 and travels (drives) without meandering.

54 and 55, the tension device 370 of the waste transport chain 10 will be described. The roller guide 364 is supported on the chain guide 367 via a tension spring 368, and the driven roller supported by the roller guide 364. 363 is configured to function as a tension roller of the waste transport chain 10. Here, a device that supports the roller guide 364 with respect to the chain guide 367 and applies tension to the roller guide 364 is a tension device 370.

  The tension device 370 includes guide means 371 that supports the roller guide 364 so that the roller guide 364 can advance and retreat in the chain tension direction, and tension means 372 that biases the roller guide 364 toward the chain tension side. The guide means 371 and the tension means 372 are provided on the left and right sides of the traveling surface of the waste transporting chain 10, respectively.

  Here, in the present embodiment, the chain tensioning direction means a direction connecting the drive sprocket 362 and the driven roller 363 and the driven roller 363 side. The waste transport chain 10 is wound only around the drive sprocket 362 and the driven roller 363, and only when the driven roller 363 is moved away from the drive sprocket 362, the waste transport chain 10 This is because the tension is increased. Similarly, the above-mentioned chain tension side means the outside of the waste transport chain 10 in the chain tension direction.

First, the guide means 371 will be described.
The guide plate 365 is fixedly provided with a tip of a guide bar 369 extending in the chain tension direction. In addition, a pipe-shaped guide bar support member 373 that is slidably supported by inserting the guide bar 369 through the chain guide 367 is fixed to the support frame 374 in a horizontal direction parallel to the chain tension direction. The guide rod support member 373 is disposed at substantially the same height as the rotation support shaft 366, thereby supporting the substantially vertical center of the waste transporting chain 10 and preventing twisting and the like.

  The other end of the guide bar 369 fixed to the roller guide 364 is inserted into a guide bar support member 373 fixed to the chain guide 367, and the guide means 371 is formed by the guide bar 369 and the guide bar support member 373. Is configured. By the guide means 371, the roller guide 364 is supported with respect to the chain guide 367 so that the roller guide 364 can advance and retreat in the chain tension direction, and a pair of right and left are provided.

Next, the tension means 372 will be described.
A tip of a tension bar 375 extending in the chain tension direction is fixed to the guide plate 365. The tension bar 375 is supported by a support frame 374 fixed to the chain guide 367 so as to be slidable in the horizontal direction in parallel with the chain tension direction.

  As shown in FIG. 55, the support frame 374 is a U-shaped member including a pair of front and rear parallel portions 374a and 374b and a connecting portion 374c that connects the parallel portions 374a and 374b. Of the pair of parallel portions 374a and 374b, the parallel portion 374a located on the drive sprocket 362 side is formed with an insertion hole having the same diameter as the outer diameter of the tension bar 375, and the tension bar 375 is formed in the parallel portion 374a. Is supported to be freely inserted.

  Further, a screw portion 375a is formed on the axis of the tension bar 375, and nuts 376 and 377 that are screwed into the screw portion 375a are provided. The nuts 376 and 377 are double nuts, and the nut 377 is a fastening means for fixing the nut 376 on the tension bar 375. It is a so-called lock nut. The tension spring 368 is interposed between the nut 376 and the parallel part 374a via a washer 378.

  The tension means 372 includes the tension bar 375 described above, a parallel portion 374a that supports the tension bar 375 so that the tension bar 375 can be inserted, a nut 376, and a tension spring 368. The tension spring 368 urges the roller guide 364 integrated with the nut 376 toward the chain tension side, and tension is applied to the waste transporting chain 10. When the urging force is further increased, the nut 376 is rotated and locked by the nut 377.

  As described above, the tension device 370 of the waste transporting chain 10 supports the roller guide 364 so that it can advance and retreat in the chain tension direction with respect to the chain guide 367 on the left and right sides of the travel surface of the waste transporting chain 10. Guide means 371 are provided respectively. In the tension device 370, a roller guide 364 that rotatably supports the driven roller 363 is supported by a chain guide 367 that rotatably supports the drive sprocket 362 via a tension spring 368.

  For this reason, the moving direction of the roller guide 364 is regulated in the chain tension direction by the guide means 371, and the roller guide 364 and the driven roller 363 are moved in the chain tension direction by the influence of the urging force of the tension spring 368. , Never tilt. In particular, in the configuration in which the tension springs 368 are provided on the left and right sides of the traveling surface as in the present embodiment, even when the urging force applied to the roller guide 364 is different on the left and right, the roller guide 364 is in the chain tension direction. It does not lean against it.

Therefore, the driven roller 363 supported by the roller guide 364 tilts in the left-right direction, and the occurrence of problems such as the link plates 361, 361,... Is prevented.
In particular, in the case where the tension springs 368 are provided on the left and right sides of the running surface, the contact between the waste transport chain 10 and the chain guide 367 is prevented even if the urging forces of the left and right tension springs 368 are not equalized. Therefore, tension adjustment is easy.

  The guide means 371 includes a guide bar 369 fixed to the roller guide 364, and a guide bar support member 373 fixed to the chain guide 377, which slidably supports the guide bar 369. Yes.

  Therefore, the roller guide 364 is supported by the chain guide 367 so as to be slidable in the chain tension direction. Therefore, the driven roller 363 as the tension roller can be slid in the chain tension direction with a simple structure as described above, and the tension device 370 is excellent in durability and incurs cost increase in its manufacture. Nor.

  Further, tension means 372 are respectively provided on the left and right sides of the traveling surface of the waste transport chain 10. The tension means 372 is composed of the following.

  First, there are a tension bar 375 fixed to the roller guide 364, and a tension bar support member (the parallel part 374a) fixed to the chain guide 367, which supports the tension bar 375 in a slidable manner.

  Next, nuts 376 and 377 that are screwed into a screw portion 375 a formed on the axis of the tension bar 375, and a tension spring 368 interposed between the nut 376 and the chain guide 367.

  For this reason, the roller guide 364 is biased toward the chain tension side by the chain guide 367 on the left and right sides of the running surface of the waste transport chain 10. Further, the urging force by the left and right tension springs 368 can be adjusted by rotating the nuts 376 and 377 with a tool or the like. Therefore, it is possible to finely adjust the tension applied to the waste transport chain 10 by the driven roller 363.

Next, the exclusion safety shutter 390 will be described with reference to FIGS. 1, 2, 48, 57, and 58.
As shown in FIGS. 1, 2, and 48, a processing unit cover 380 that covers the upper portion of the waste disposal processing unit 11 in an openable and closable manner is provided at the upper rear portion of the combine. As shown in FIG. 47, the processing unit cover 380 is provided on a support frame 381 erected on the combiner body frame 2 so as to be pivotable up and down around the pivot shafts 382 and 382 in the front-rear direction. ing.

  The processing unit cover 380 has a waste safety shutter 390 that can open and close the opening on the start end side of the waste transport chain 10 at a side position of the start end (front end) of the waste transport chain 10. Is provided. The evacuation safety shutter 390 is disposed above the rear end of the feed chain 9 and is pivotally provided on the left side surface of the processing unit cover 380 via a left and right rotation support shaft 391. When the waste to be conveyed is transferred to the waste transport chain 10, the stocker side of the waste is configured to rotate by pushing up the waste safety shutter 390 upward, and closed when not transported.

  Here, when the waste transported by the waste transport chain 10 is drawn into the processing unit cover 380, the waste safety shutter 390 tries to move the waste safety shutter 390 in the left-right direction due to its resistance. Power is applied. Specifically, the reason is as follows.

  First, the exclusion safety shutter 390 is pivotally supported at one point at the front upper portion, so that the rear portion is easily deformed when a large force is applied in the left-right direction. On the other hand, the waste is conveyed rearward in the left-right posture by the feed chain 9, but when it is inherited by the waste conveyance chain 10, the waste is conveyed obliquely into the machine body. At this time, the stock holder of the waste is sandwiched between the feed chains 9 and protrudes to the side, so that the stock stock that has been ejected is drawn into the processing section cover 380 by the waste transport chain 10 and the safety safety shutter 390 At the same time, the evacuation safety shutter 390 tries to pull in.

  That is, a force that pulls the waste safety shutter 390 inward due to the waste transported to the waste transport chain 10 is applied to the waste safety shutter 390. There were times when it was caught by the stock and deformed or damaged.

  Therefore, the combine of the present embodiment is provided with means for restricting the movement (twisting) of the exclusion safety shutter 390 to the outside. The restricting means uses a lock lever 383 of the processing unit cover 380.

  As shown in FIGS. 57 and 58, a lock lever 383 of the processing unit cover 380 that protrudes from the left side surface of the processing unit cover 380 is provided. The lock lever 383 is a lock lever that is released when the processing unit cover 380 is opened for maintenance or the like. When the lock lever 383 is lifted, the lock is released.

  The lock lever 383 is formed so that the tip of the lever rod 383b is bent forward to form a grip 383a, and the front end of the grip 383a is further bent inward to approach the waste safety shutter 390. The grip 383a is disposed so as to overlap with the rear portion of the exclusion safety shutter 390 in the left side view and also overlap with the inlet 380a opened on the left side of the processing unit cover 380.

  With the configuration described above, the waste safety shutter 390 is pulled in when the waste is transported by the waste transport chain 10, but is rotated upward along the outer surface of the processing unit cover 380. The contact with the grip 383a prevents deformation.

  For this reason, even if the waste transported to the waste transport chain 10 is caught by the waste safety shutter 390 and a lateral force is applied to the waste safety shutter 390, the lateral movement of the waste safety shutter 390 is restricted. The deformation safety shutter 390 is prevented from being deformed or damaged.

The whole left view of the combine which concerns on one Example of this invention. Similarly the whole top view. Similarly, the entire right side view. The left side schematic diagram of a threshing part and a selection part. The schematic diagram which shows the power transmission path | route from an engine to a discharge auger. The front view of a Glen tank bottom. FIG. Similarly a partial perspective view. The front view of the Glen tank of another form. FIG. 10 is a partially enlarged view of FIG. 9. The right side sectional view of a Glen tank. The rear side view of the threshing apparatus which showed the example of arrangement | positioning of a sieving apparatus. The rear side view of the threshing apparatus which showed the example of arrangement | positioning of a sieving apparatus. FIG. The side view which shows the structure of a sieving apparatus. Similarly perspective view. The right side schematic diagram of a rocking sorter. Similarly perspective view. The left view which shows the state of the sieving apparatus at the time of removal | desorption of the rocking | swiveling sorter. The rear left side view of a selection part. The expanded view of a sealing member. Similarly perspective view. The left side sectional view of a suction fan. Similarly rear view. The perspective view of an inhalation guide body. The perspective view of a lower guide plate. The side view of a cereal conveyance apparatus. A side view showing pinching. Similarly a rear enlarged view. The side view which shows the structure of a feed chain frame. The top view which shows the locking mechanism of a feed chain frame. The side view which shows the structure of a feed chain frame rear part. The partial plane sectional view which shows a locking device at the time of opening. AA arrow sectional drawing in FIG. The side view which shows a pre guide. Similarly front view. The side view which shows the inheritance guide. The figure which shows the inheritance guide seen from the direction of the arrow B in FIG. The figure which shows the inheritance guide seen from the direction of the arrow C in FIG. The perspective view which shows the structure of a handling cylinder supply start end part. The perspective view which shows the structure of the inside of a handling chamber of the state which removed the handling cylinder. The expansion perspective view which shows the structure of a lead board. The front view which shows a treatment room. The expanded view which shows a receiving network. The front view which shows the treatment cylinder lower part. The front view which shows the position adjustment part of a receiving net. Front partial cross-sectional view showing the front net presser. The top view which shows a combine left rear part. The side view which shows a waste transport apparatus. The perspective view which shows the front process side of a waste conveying apparatus. FIG. The top view which shows the link mechanism seen from the direction of the arrow E in FIG. The side view which shows the link mechanism seen from the direction of arrow D in FIG. The side view which shows a waste conveyance chain rear-end part. The top view which shows the rear end part of a waste conveyance chain. The cross-sectional view which shows a chain guide. The left view of the combine rear part which shows a waste safety shutter. The top view which shows a waste safety shutter.

Explanation of symbols

DESCRIPTION OF SYMBOLS 9 Feed chain 20 Threshing part 21 Handling chamber 22 Handling cylinder 22a Teeth 23 Reception net 190 Feed chain frame 290 Back net 291 Front net 291b Net frame 291d Bending part 300 Position adjustment part 305 Bracket 306 Fixing plate 309 Shim 310 Front net presser

Claims (3)

  In the threshing part of the combine that includes a handling cylinder having teeth in the handling chamber of the threshing part and arranges the receiving net around the lower part of the handling cylinder, a fitting part is formed at the feed chain side end of the receiving net, A fixing member is fixed to a bracket that supports an end portion of the receiving net on the machine body side, the fixing member can be fitted into the fitting portion, and the fixing member can be adjusted in position. Combine thresher.   The combine threshing portion according to claim 1, wherein a shim is interposed between the fixing member and the bracket, and the shim is adjusted by adjusting the position of the shim.   A combine that includes a handling cylinder having teeth in a handling chamber of a threshing unit, a receiving net is arranged around the lower side of the handling cylinder, and a front net presser for pressing the receiving net is arranged on an extension of the receiving net. In the threshing section, the threshing section of a combine is characterized in that the front net presser is provided so as to be positionally adjustable with respect to the feed chain frame.