General-purpose combine

Abstract

To reduce wear of a thresher by the rotation of a threshing cylinder and vibration of a separation part by configuring the thresher of a general-purpose combine firmly.SOLUTION: There is provided a general-purpose combine in which a reaping pretreatment device 3 is provided on a front side of a machine body frame 1 equipped with a travelling device 2, and reaped grain culm is threshed and separated by a thresher 4 mounted on the machine body frame 1. Right and left vertical frames 30R and 30L are erected on the machine body frame 1, and the threshing feeding port 50 of the thresher 4 communicated with the feeder house 3D of the reaping pretreatment device 3 is provided between the right and left vertical frames 30R and 30L. The front sides of the right and left vertical frames 30R and 30L are connected by a counter support cylinder 32 that journals a counter shaft 31 at the lower part of the threshing feeding port 50. A fan shaft 25A that journals a fan 25 in the lower part is connected to the rear side of the right and left vertical frames 30R and 30L, and the front part of the thresher 4 is integrally constituted.SELECTED DRAWING: Figure 17

Description

Technical Field

[0001] The present invention relates to a threshing device for a general-purpose combine.

Background Art

[0002] A general-purpose combine is an agricultural machine that cuts the cereal straw growing in the field, feeds it into a threshing device, threshes and separates the grains, stores them in a grain tank, and harvests them.

[0003] The general-purpose combine is described in Japanese Patent No. 5917724.

Prior Art Documents

Patent Documents

[0004]

Patent Document 1

Summary of the Invention

Problems to be Solved by the Invention

[0005] A general-purpose combine is provided with a pre-cutting device for cutting the cereal straw in the field at the front of the traveling vehicle body. All the cereal straw cut by the pre-cutting device here is carried into a threshing device mounted on the traveling vehicle body, and the grains are handled and sorted and stored in a grain tank to perform the harvesting operation. Therefore, the threshing device vibrates violently due to the rotation of the rotating shaft and the vibration of the sorting unit inside, and the device wears out severely. In particular, when a large amount of wet cereal straw is input into the threshing device, abnormal vibration of the threshing device occurs.

[0006] An object of the present invention is to reduce the wear of the threshing device of a general-purpose combine due to the rotation of the rotating shaft and the vibration of the sorting unit by constructing the threshing device firmly.

Means for Solving the Problems

[0007] The problems of the present invention are solved by the following technical means.

[0008] The invention according to claim 1 is a general-purpose combine harvester that is provided with a pre-cutting treatment device 3 on the front side of a machine body frame 1 equipped with a traveling device 2, and threshes and separates the cut cereal straws using a threshing device 4 mounted on the machine body frame 1. The machine body frame 1 is provided with left and right vertical frames 30L and 30R erected thereon, and a threshing inlet 50 communicating with the feeder house 3D of the pre-cutting treatment device 3 is provided between the left and right vertical frames 30L and 30R. The front sides of the left and right vertical frames 30L and 30R are connected by a counter support cylinder 32 that pivotally supports a counter shaft 31 below the threshing inlet 50, and a winnowing fan shaft 25A that pivotally supports a winnowing fan 25 is connected to the rear sides of the left and right vertical frames 30L and 30R to integrally form the front part of the threshing device 4.

[0009] The invention according to claim 2 is the general-purpose combine harvester according to claim 1, characterized in that the left and right vertical frames 30L and 30R are connected by an elevator drive shaft 34 that crosses inside the threshing inlet 50.

[0010] The invention according to claim 3 is the general-purpose combine harvester according to claim 1, characterized in that the elevator drive shaft 34 of the pre-cutting treatment device 3 is pivotally supported on the left and right vertical frames 30L and 30R across the threshing inlet 50, and the upper side of the threshing inlet 50 is connected to the left and right vertical frames 30L and 30R by a support member 42 of a handling cylinder drive shaft 40.

Advantages of the Invention

[0011] In the invention according to claim 1, the front sides of the left and right vertical frames 30L and 30R erected on the machine body frame 1 are connected by a counter support cylinder 32 that pivotally supports a counter shaft 31 below the threshing inlet 50, and the rear sides of the left and right vertical frames 30L and 30R are connected by a winnowing fan shaft 25A to be integrally formed. Therefore, the front part of the threshing device 4 is strongly constructed, abnormal vibration can be suppressed, and the bearings of the counter shaft 31 and the winnowing fan shaft 25A do not deteriorate due to vibration, resulting in a durable threshing device for a general-purpose combine harvester.

[0012] In the invention of claim 2, since the left and right vertical frames 30L and 30R are connected by the elevator drive shaft 34 that crosses the threshing inlet 50 which is a space part, the front part of the threshing device 4 is firmly constructed.

[0013] In the invention of claim 3, since the upper side of the threshing inlet 50 which is a space part is connected to the left and right vertical frames 30L and 30R by the support member 42 of the threshing cylinder drive shaft 40, furthermore, the front part of the threshing device 4 is firmly constructed.

Brief Description of the Drawings

[0014]

Figure 1

Figure 2

Figure 3

Figure 4

Figure 5

Figure 6

Figure 7

Figure 8

Figure 9

Figure 10

Figure 11

Figure 12

Figure 13

Figure 14

Figure 15

Figure 16

Figure 17

Embodiments for Carrying Out the Invention

[0015] As shown in FIGS. 1 to 3, a general-purpose combine harvester is provided with a traveling device 2 consisting of a pair of left and right crawlers that travel on the soil surface below the machine body frame 1, a pre-harvest treatment device 3 for harvesting cereal straw in the field is provided in front of the machine body frame 1, a threshing device 4 for threshing and sorting the harvested cereal straw is provided on the left rear side of the pre-harvest treatment device 3, and a control unit 5 for the operator to board is provided on the right rear side of the pre-harvest treatment device 3.

[0016] An engine room 6 for housing the engine E is provided below the control unit 5, a grain tank 7 for storing the threshed and sorted grains is provided behind the control unit 5, and a discharge auger 8 for discharging the grains to the outside is provided behind the grain tank 7.

[0017] The pre-harvest treatment device 3 is composed of a conveying device 3A for conveying the cereal straw in the field to the rear while standing it up, a cutting blade device 3B for cutting the root of the cereal straw conveyed to the lower rear side of the conveying device 3A, an auger device 3C for gathering the cereal straw conveyed to the rear side of the conveying device 3A to the left, and a feeder house 3D for conveying the gathered cereal straw to the threshing device 4.

[0018] As shown in FIG. 4, the threshing device 4 is formed by a handling chamber 10 for threshing the cereal straw and a sorting chamber 20 for sorting the threshed grains.

[0019] On the front and rear walls of the handling chamber 10, a handling cylinder 11 for threshing the cereal straws conveyed from the feeder house 3D is installed. Below the handling cylinder 11, a receiving net 12 formed in a semi-circular arc shape along the lower outer periphery of the handling cylinder 11 is provided. Further, the upper part of the handling cylinder 11 is covered by an openable and closable handling cylinder cover 13, and a dust conveying plate for guiding the cereal straws to the rear part of the handling chamber 10 is provided on the inner peripheral part of the handling cylinder cover 13. Note that the handling cylinder 11 is supported by a handling cylinder shaft 14 pivotally supported in the front-rear direction, and an impeller 15, which is a spiral blade for taking in cereal straws on the front end side, is formed. The rear end to the terminal of the handling cylinder 11 is formed in a cylindrical shape by a tooth bar 17 with teeth (handling teeth) 16 standing upright.

[0020] On the upper part of the sorting chamber 20, a rocking sorting device 21 for sorting the cereal grains leaking from the handling chamber 10 is provided. Below the rocking sorting device 21, in order from the front side, there are a winnowing basket 25 for blowing sorting air to the rocking sorting device 21, a wind cutter 26 for changing the blowing direction of the sorting air behind the winnowing basket 25, a first spiral 27 for conveying the cereal grains leaking from the rocking sorting device 21 to the granary tank 7, and a second spiral 28 for re-conveying the cereal grains with branches and the like attached and the cut straws leaking from the rear part of the rocking sorting device 21 to the transfer shelf 22a at the front part of the rocking sorting device 21.

[0021] The rocking sorting device 21 is composed of a transfer shelf 22a arranged above the winnowing basket 25, a fixed sieve 22b arranged on the downstream side of the transfer shelf 22, and a straw rack 22c arranged on the downstream side of the fixed sieve 21b.

[0022] The transfer shelf 22a transfers the cereal grains leaking from the handling chamber 10 to the fixed sieve 22b arranged on the downstream side, and the rear part is inclined downward to the rear, or protrusions and unevenness are provided on the upper surface. The fixed sieve 22b is a sieve for sorting the cereal grains transferred from the transfer shelf 22a or the cereal grains directly leaking from the handling chamber 10 and foreign matters such as chaff. A plurality of fixed sieve members made of thin plate-like bodies inclined so that the downstream side is higher are arranged in parallel at a predetermined interval in the front-rear rocking direction of the rocking sorting device 21. Further, the straw rack 22c is a sieve for sieving and selecting the cereal grains with branches and the like attached from the relatively large chaff that did not leak from the fixed sieve 21b.

[0023] As shown in Fig. 16, guide bodies 23 for guiding grains, straw fragments, etc. to the center of the shaking sorting device 21 are provided on the left and right inner walls of the handling chamber 10. The guide bodies 23 are formed by arranging inclined plate bodies or flat bars in a stack shape or arranging wire rods in an inclined plane shape, and are used to move grains, straw fragments, etc. toward the center of the shaking sorting device 21 so that they do not accumulate on the inner wall side. It is preferably provided across the entire front and rear width of the shaking sorting device 21, but it may also be provided only at the portions corresponding to the transfer shelf 22a, the fixed sieve 22b, and the straw rack 22c where there are more grains, straw fragments, etc., or it may be provided on only one side, left or right. Further, by making the side surface of the handling chamber 10 openable and closable, it becomes easier to clean the guide bodies 23. Furthermore, the lower end of the guide body 23 may be close to the tip of the two teeth 16 of the handling chamber 10 and extend to about 10% inside from the end of the shaking sorting device 21, and the amount of moving toward the center by expanding the gap in the stack shape may be adjusted.

[0024] As shown in Figs. 5, 6, and 17, columnar left and right vertical frames 30L and 30R that stand upright upward from the machine body frame 1 are provided on both sides of the front part of the threshing device 4. As shown in Figs. 9 and 17, the left vertical frame 30L is provided on the left side of the left wall of the threshing inlet 50 to which the feeder house 3D is connected, and the right vertical frame 30R is provided on the right side of the right wall of the threshing inlet 50. That is, as shown in Fig. 10, the threshing inlet 50 for receiving the grain straw conveyed by the feeder house 3D into the threshing device 4 has the rear end of the feeder house 3D provided between the left and right vertical frames 30L and 30R.

[0025] On the front surfaces of the left and right vertical frames 30L and 30R, counter support cylinders 32 that rotatably house a counter shaft 31 extending in the left - right direction for transmitting the output rotation of the engine E to each part of the threshing device 4 including the shaking sorting device 21 and each part of the pre - harvesting processing device 3 including the elevator are bolted to the left and right vertical frames 30L and 30R by brackets 33. Note that the bracket 33 may be composed of a flat bar that forms an attachment surface by winding around the outer periphery of the counter support cylinder 32.

[0026] Above the countershaft 31, an elevator drive cylinder 35 that rotatably supports an elevator drive shaft 34 for driving a belt-shaped elevator installed inside the feeder house 3D is provided on the left and right vertical frames 30L and 30R via a support member 36 so as to transmit the output rotation of the engine E to a conveying device 3A or the like. The lifting and pivoting fulcrum of the pre-harvest processing device 3 and the lifting and pivoting fulcrum of the feeder house 3D are coaxial with the elevator drive shaft 34 and are formed on the support member 36, so that the configuration is compact.

[0027] Also, above the elevator drive shaft 34 on the front surface of the left vertical frame 30L, an elevator reverse drive cylinder 38 that rotatably houses a cutting reverse drive shaft 37 for reversely driving the drive direction of the pre-harvest processing device 3 is provided via a support member 39.

[0028] A handling cylinder drive cylinder 41 that rotatably houses a handling cylinder drive shaft 40 extending leftward from the right vertical frame 30R for transmitting the output rotation of the engine E to the handling cylinder 11 is provided on the left and right vertical frames 30L and 30R via a support member 42.

[0029] Also, the counter support cylinder 32 that houses the countershaft 31 and the elevator drive cylinder 35 that houses the elevator drive shaft 34 also serve as strength members that connect the left vertical frame 30L and the right vertical frame 30R and increase the integral strength of the left vertical frame 30L and the right vertical frame 30R. Thereby, abnormal vibration of the threshing device 4 can be suppressed, the rigidity is increased, and deformation and the like can be prevented.

[0030] As shown in FIGS. 7 to 9 and 17, in the vertical direction, the counter shaft 31 is provided above the winnowing shaft 25A of the winnowing basket 25 and below the elevator drive shaft 34 and the handling cylinder drive shaft 40. In the front-rear direction, the counter shaft 31 is provided in front of the winnowing shaft 25A of the winnowing basket 25 and behind the elevator drive shaft 34 and the handling cylinder drive shaft 40. Thereby, it is possible to more easily arrange and maintain the belts that transmit the output rotation of the engine E to the pulleys attached to each shaft. In particular, since the elevator drive shaft 34 and the handling cylinder drive shaft 40 are arranged in a direction away from the left vertical frame 30L and the right vertical frame 30R forward, a predetermined gap is generated, making it easier to perform maintenance management of belts and the like.

[0031] As shown in FIGS. 7 and 8, the left end portion of the winnowing shaft 25A is supported by a bearing plate 25AL, and the bearing plate 25AL is connected to the left vertical frame 30L. Also, the right end portion of the winnowing shaft 25A is supported by a bearing plate 25AR, and the bearing plate 25AR is connected to the right vertical frame 30R. The front sides of the left and right vertical frames 30L and 30R are connected by a counter support cylinder 32 that pivotally supports the counter shaft 31 above this connecting portion. Due to such a synergistic effect, the rigidity of the threshing device 4 is improved, suppressing the occurrence of abnormal vibration.

[0032] Also, in the vertical direction, the counter shaft 31 is provided below the handling cylinder shaft 14 and the threshing inlet 50. In the front-rear direction, the counter shaft 31 is provided in front of the front end portion 14F of the handling cylinder shaft 14 and the front end portion 50F of the threshing inlet 50 behind the elevator drive shaft 34. Thereby, the counter shaft 31 can be provided close to the left and right vertical frames 30L and 30R, further enhancing the rigidity of the left and right vertical frames 30L and 30R and preventing deformation and the like.

[0033] Left and right vertical frames 30L and 30R for supporting the threshing and pre-harvest processing device 3 are provided at the front end of the threshing device 4, and the upper end of the winnowing casing and the height of the handling cylinder drive shaft 40 are arranged to be substantially the same. In this configuration, the strength of the threshing device 4 can be effectively enhanced, and by arranging the winnowing casing in its vicinity, they complement each other, and strength can be effectively ensured. Also, transmission can be performed efficiently.

[0034] Also, the front end of the guide surface of the threshing inlet 50 faces between the left and right vertical frames 30L and 30R, and the tip of the guide surface is positioned above the threshing counter shaft 31. In the configuration where the tip of the guide surface is positioned between the threshing counter shaft 31 and the pivot point of the elevator drive shaft 34, by providing the tip of the threshing inlet 50 in the vicinity of the threshing counter shaft 31, the strength of each other can be effectively enhanced. Also, by using the space below the threshing inlet 50 as a sorting space, sorting can be performed efficiently.

[0035] A pivot point of the side cover is provided near the front end of the handling cylinder 11, and it can be opened and closed in a substantially horizontal opening manner. With respect to this pivot point, the front end of the winnowing casing is arranged above and on the front side, and the front end of the locus of the outer periphery of the winnowing blade is on the front side. In this configuration, when the side cover is opened and closed, interference with the front transmission member is prevented, the transmission member can be arranged efficiently, and by arranging the sorting space on the front side, sorting can be performed efficiently.

[0036] Left and right vertical frames 30L and 30R for supporting the threshing and pre-harvest processing device 3 are provided at the front end of the threshing device 4, and the upper end of the winnowing casing is arranged below the height of the threshing counter shaft 31. In this configuration, the strength of the frame can be effectively enhanced, and by arranging the winnowing casing in its vicinity, they complement each other, and strength can be effectively ensured. Also, transmission can be performed efficiently. Note that the upper end of the winnowing casing may be configured to be above the height of the threshing counter shaft.

[0037] Also, in the configuration where the height of the front swing shelf driven bearing holder and the threshing counter shaft 31 are arranged to be substantially the same, the strength of the frame can be effectively enhanced, and by providing the front swing shelf driven bearing holder in its vicinity, strength can be ensured efficiently.

[0038] By arranging the front-side driven bearing holder of the oscillating shelf above the 25th shaft of the winnowing fan, the winnowing air of the 25th shaft of the winnowing fan can be efficiently supplied to the oscillating sorting device 21, and sorting can be performed efficiently. In addition, the space of the sorting chamber can be effectively utilized.

[0039] The front-side driven bearing holder of the oscillating shelf may be arranged in front of the 25th shaft of the winnowing fan. The winnowing air of the 25th shaft of the winnowing fan can be efficiently supplied to the oscillating sorting device 21, and sorting can be performed efficiently. In addition, the space of the sorting chamber can be effectively utilized.

[0040] Further, with a configuration in which the 25th shaft of the winnowing fan is positioned below the guide surface of the threshing inlet 50, and the 25th winnowing fan is arranged above the vicinity of the front end of the handling cylinder, sorting air can be efficiently supplied toward the oscillating sorting device 21, and the sorting performance can be improved.

[0041] Further, with a configuration in which the front end of the winnowing fan casing is positioned below the guide surface of the threshing inlet 50, and the 25th winnowing fan is arranged below the vicinity of the front end of the handling cylinder 11, sorting air can be efficiently supplied toward the oscillating sorting device 21, and the sorting performance can be improved.

[0042] Further, with a configuration in which the front end of the winnowing fan casing is positioned below the guide surface of the threshing inlet 50 and the rear end of the winnowing fan casing is positioned behind the threshing inlet 50, and the 25th winnowing fan is arranged below the vicinity of the front end of the handling cylinder 11, sorting air can be efficiently supplied toward the oscillating sorting device 21, and the sorting performance can be improved.

[0043] Further, with a configuration in which the front end of the winnowing fan casing is positioned in front of the front end of the impeller 15 of the handling cylinder 11, and the 25th winnowing fan is arranged in front of the threshing device 4, sorting air can be efficiently supplied toward the oscillating sorting device 21, and the sorting performance can be improved. In addition, transmission can be performed efficiently.

[0044] In addition, with the configuration where the axis of the winnowing pan 25 is positioned below the impeller 15 of the handling cylinder 11 and the winnowing pan 25 is arranged in front of the threshing device 4, sorting air can be efficiently supplied toward the swing sorting device 21, improving the sorting performance. Also, the transmission can be performed efficiently.

[0045] In addition, with the configuration where the axis of the winnowing pan 25 is positioned in front of the rear end of the impeller 15 of the handling cylinder 11 and the winnowing pan 25 is arranged in front of the threshing device 4, sorting air can be efficiently supplied toward the swing sorting device 21, improving the sorting performance. Also, the transmission can be performed efficiently.

[0046] In addition, with the configuration where the axis of the winnowing pan 25 is positioned in front of the front end of the two-tooth bar 17 of the handling cylinder 11 and the winnowing pan 25 is arranged in front of the threshing device 4, sorting air can be efficiently supplied toward the swing sorting device 21, improving the sorting performance. Also, the transmission can be performed efficiently.

[0047] In addition, with the configuration where the front end of the winnowing pan casing is positioned substantially in the same front-rear direction as the front end of the impeller 15 of the handling cylinder 11 and the winnowing pan 25 is arranged in front of the threshing device 4, sorting air can be efficiently supplied toward the swing sorting device 21, improving the sorting performance. Also, the transmission can be performed efficiently.

[0048] In addition, with the configuration where the front end of the winnowing pan casing is positioned in front of the front end of the impeller 15 of the handling cylinder 11 and the rear end of the casing is positioned behind the rear end of the impeller, and the winnowing pan 25 is arranged in front of the threshing device 4, sorting air can be efficiently supplied toward the swing sorting device 21, improving the sorting performance. Also, the transmission can be performed efficiently.

[0049] With the configuration where the front end of the winnowing pan casing is positioned in front of the front end of the impeller 15 of the handling cylinder 11 and the rear end of the casing is positioned behind the front end of the two-tooth bar of the handling cylinder 11, and the winnowing pan 25 is arranged in front of the threshing device 4, sorting air can be efficiently supplied toward the swing sorting device 21, improving the sorting performance. Also, the transmission can be performed efficiently.

[0050] The outer circumference of the winnowing casing is positioned so as to be wider than the front-to-back length of the impeller 15 of the handling cylinder 11. By arranging the winnowing basket 25 in front of the threshing machine, sorting air can be efficiently supplied toward the swing sorting device 21, and the sorting performance can be improved. Also, transmission can be performed efficiently.

[0051] With a configuration in which the front end of the outer circumference of the blades of the winnowing basket 25 is positioned below the impeller 15 of the handling cylinder 11, by arranging the winnowing basket 25 in front of the threshing machine, sorting air can be efficiently supplied toward the swing sorting device 21, and the sorting performance can be improved. Also, transmission can be performed efficiently.

[0052] With a configuration in which the front end of the outer circumference of the blades of the winnowing basket 25 is positioned in front of the rear end of the impeller 15 of the handling cylinder 11, by arranging the winnowing basket 25 in front of the threshing device 4, sorting air can be efficiently supplied toward the swing sorting device 21, and the sorting performance can be improved. Also, transmission can be performed efficiently.

[0053] Also, with a configuration in which the front end of the outer circumference of the blades of the winnowing basket 25 is in front of the rear end of the impeller of the handling cylinder 11 and the rear end of the outer circumference of the blades of the winnowing basket 25 is behind the rear end of the impeller 15, by arranging the winnowing basket 25 in front of the threshing machine, sorting air can be efficiently supplied toward the swing sorting device 21, and the sorting performance can be improved. Also, transmission can be performed efficiently.

[0054] Also, with a configuration in which the front end of the outer circumference of the blades of the winnowing basket 25 is in front of the rear end of the impeller 15 of the handling cylinder 11 and the rear end of the outer circumference of the blades of the winnowing basket 25 is behind the front end of the two-tooth bar 17 of the handling cylinder 11, by arranging the winnowing basket 25 in front of the threshing machine, sorting air can be efficiently supplied toward the swing sorting device 21, and the sorting performance can be improved. Also, transmission can be performed efficiently.

[0055] Also, with a configuration in which the front end of the outer circumference of the blades of the winnowing basket 25 is in front of the rear end of the impeller of the handling cylinder 11 and the rear end of the outer circumference of the blades of the winnowing basket 25 is behind the rear end of the impeller 15, by arranging the winnowing basket 25 in front of the threshing device 4, sorting air can be efficiently supplied toward the swing sorting device 21, and the sorting performance can be improved. Also, transmission can be performed efficiently.

[0056] In addition, with a configuration in which the front end of the outer periphery of the 25 blades of the threshing drum is positioned in front of the rear end of the impeller 15 of the handling cylinder 11, and the rear end of the outer periphery of the 25 blades of the threshing drum is positioned behind the front end of the two-spar of the handling cylinder 11, by arranging the 25 blades of the threshing drum in front of the threshing device 4, sorting air can be efficiently supplied toward the swing sorting device 21, and the sorting performance can be improved. Also, the transmission can be performed efficiently.

[0057] In addition, with a configuration in which the front end of the threshing drum casing is positioned in front of the front end of the impeller 15 of the handling cylinder 11, by arranging the 25 blades of the threshing drum in front of the threshing machine, sorting air can be efficiently supplied toward the swing shelf, and the sorting performance can be improved. Also, the transmission can be performed efficiently.

[0058] In addition, with a configuration in which the axis of the 25 blades of the threshing drum is positioned below the impeller 15 of the handling cylinder 11, by arranging the 25 blades of the threshing drum in front of the threshing machine, sorting air can be efficiently supplied toward the swing sorting device 21, and the sorting performance can be improved. Also, the transmission can be performed efficiently.

[0059] In addition, with a configuration in which the axis of the 25 blades of the threshing drum is positioned in front of the rear end of the impeller 15 of the handling cylinder 11, by arranging the 25 blades of the threshing drum in front of the threshing device 4, sorting air can be efficiently supplied toward the swing sorting device 21, and the sorting performance can be improved. Also, the transmission can be performed efficiently.

[0060] In addition, with a configuration in which the axis of the 25 blades of the threshing drum is positioned in front of the front end of the two-spar 17 of the handling cylinder 11, by arranging the 25 blades of the threshing drum in front of the threshing device 4, sorting air can be efficiently supplied toward the swing sorting device 21, and the sorting performance can be improved. Also, the transmission can be performed efficiently.

[0061] In addition, with a configuration in which the front end of the threshing drum casing is positioned substantially at the same position in the front-rear direction as the front end of the impeller 15 of the handling cylinder 11, by arranging the 25 blades of the threshing drum in front of the threshing machine, sorting air can be efficiently supplied toward the swing shelf, and the sorting performance can be improved. Also, the transmission can be performed efficiently.

[0062] In addition, by positioning the front end of the threshing fan casing in front of the front end of the impeller 15 of the handling cylinder 11 and the rear end of the casing behind the rear end of the impeller, and arranging the threshing fan 25 in front of the threshing machine, sorting air can be efficiently supplied toward the oscillating shelf, improving the sorting performance. Also, transmission can be efficiently performed.

[0063] In addition, by positioning the front end of the threshing fan casing in front of the front end of the impeller 15 of the handling cylinder 11 and the rear end of the casing behind the front end of the two-tooth bar of the handling cylinder 11, and arranging the threshing fan 25 in front of the threshing device 4, sorting air can be efficiently supplied toward the oscillating sorting device 21, improving the sorting performance. Also, transmission can be efficiently performed.

[0064] In addition, by positioning the threshing fan 25 in front of the threshing device 4 with the outer circumference of the threshing fan casing wider than the front-to-rear length of the impeller 15 of the handling cylinder 11, sorting air can be efficiently supplied toward the oscillating sorting device 21, improving the sorting performance. Also, transmission can be efficiently performed.

[0065] In addition, by positioning the front end of the outer circumference of the threshing fan blades below the impeller of the handling cylinder, and arranging the threshing fan 25 in front of the threshing device 4, sorting air can be efficiently supplied toward the oscillating sorting device 21, improving the sorting performance. Also, transmission can be efficiently performed.

[0066] In addition, by positioning the front end of the outer circumference of the threshing fan 25 blades in front of the rear end of the impeller 15 of the handling cylinder 11, and arranging the threshing fan 25 in front of the threshing device 4, sorting air can be efficiently supplied toward the oscillating sorting device 21, improving the sorting performance. Also, transmission can be efficiently performed.

[0067] In addition, by positioning the front end of the outer circumference of the threshing fan 25 blades in front of the rear end of the impeller 15 of the handling cylinder 11 and the rear end of the outer circumference of the threshing fan 25 blades behind the rear end of the impeller, and arranging the threshing fan 25 in front of the threshing device 4, sorting air can be efficiently supplied toward the oscillating sorting device 21, improving the sorting performance. Also, transmission can be efficiently performed.

[0068] In addition, with a configuration in which the front end of the outer periphery of the winnowing fan is positioned in front of the rear end of the impeller 15 of the handling cylinder 11, and the rear end of the outer periphery of the winnowing fan is positioned behind the front end of the two-bar of the handling cylinder, by arranging the winnowing fan in front of the threshing machine, sorting air can be efficiently supplied toward the swing shelf, and sorting performance can be improved. Also, transmission can be performed efficiently.

[0069] In addition, with a configuration in which the front end of the winnowing fan casing is positioned in front of the front end of the impeller 15 of the handling cylinder 11, by arranging the winnowing fan 25 in front of the threshing machine, sorting air can be efficiently supplied toward the swing sorting device 21, and sorting performance can be improved. Also, transmission can be performed efficiently.

[0070] In addition, with a configuration in which the axis of the winnowing fan 25 is positioned below the impeller 15 of the handling cylinder 11, by arranging the winnowing fan 25 in front of the threshing device 4, sorting air can be efficiently supplied toward the swing sorting device 21, and sorting performance can be improved. Also, transmission can be performed efficiently.

[0071] In addition, with a configuration in which the axis of the winnowing fan 25 is positioned in front of the rear end of the impeller 15 of the handling cylinder 11, by arranging the winnowing fan 25 in front of the threshing device 4, sorting air can be efficiently supplied toward the swing sorting device 21, and sorting performance can be improved. Also, transmission can be performed efficiently.

[0072] In addition, with a configuration in which the axis of the winnowing fan 25 is positioned in front of the front end of the two-bar 17 of the handling cylinder 11, by arranging the winnowing fan 25 in front of the threshing device 4, sorting air can be efficiently supplied toward the swing sorting device 21, and sorting performance can be improved. Also, transmission can be performed efficiently.

[0073] In addition, with a configuration in which the front end of the winnowing fan casing is positioned substantially in the same front-rear direction as the front end of the impeller 15 of the handling cylinder 11, by arranging the winnowing fan 25 in front of the threshing device 4, sorting air can be efficiently supplied toward the swing sorting device 21, and sorting performance can be improved. Also, transmission can be performed efficiently.

[0074] In addition, by positioning the front end of the winnowing casing in front of the front end of the impeller 15 of the handling cylinder 11 and the rear end of the casing behind the rear end of the impeller, and arranging the winnowing pan 25 in front of the rocking sorting device 21, sorting air can be efficiently supplied to the rocking sorting device 21, improving the sorting performance. Also, transmission can be performed efficiently.

[0075] In addition, by positioning the front end of the winnowing casing in front of the front end of the impeller 15 of the handling cylinder 11 and the rear end of the casing behind the front end of the two-tooth bar of the handling cylinder 11, and arranging the winnowing pan 25 in front of the threshing machine, sorting air can be efficiently supplied to the rocking sorting device 21, improving the sorting performance. Also, transmission can be performed efficiently.

[0076] In addition, by positioning the winnowing casing such that the outer circumference thereof is wider than the front-to-rear length of the impeller 15 of the handling cylinder 11, and arranging the winnowing pan 25 in front of the threshing machine, sorting air can be efficiently supplied to the rocking sorting device 21, improving the sorting performance. Also, transmission can be performed efficiently.

[0077] In addition, by positioning the front end of the outer circumference of the winnowing pan 25 blades below the impeller 15 of the handling cylinder 11, and arranging the winnowing pan 25 in front of the threshing machine, sorting air can be efficiently supplied to the rocking sorting device 21, improving the sorting performance. Also, transmission can be performed efficiently.

[0078] In addition, by positioning the front end of the outer circumference of the winnowing pan 25 blades in front of the rear end of the impeller 15 of the handling cylinder 11, and arranging the winnowing pan 25 in front of the threshing device 4, sorting air can be efficiently supplied to the rocking sorting device 21, improving the sorting performance. Also, transmission can be performed efficiently.

[0079] In addition, by positioning the front end of the outer circumference of the winnowing pan 25 blades in front of the rear end of the impeller of the handling cylinder 11 and the rear end of the outer circumference of the winnowing pan 25 blades behind the rear end of the impeller 15, and arranging the winnowing pan 25 in front of the threshing device 4, sorting air can be efficiently supplied to the rocking sorting device 21, improving the sorting performance. Also, transmission can be performed efficiently.

[0080] Also, with a configuration in which the front end of the outer periphery of the 25 vanes of the winnowing fan is positioned in front of the rear end of the impeller 15 of the handling cylinder 11, and the rear end of the outer periphery of the 25 vanes of the winnowing fan is positioned behind the front end of the two bars of the kogidou, the sorting air can be efficiently supplied toward the rocking sorting device 21, and the sorting performance can be improved. Also, the transmission can be efficiently performed.

[0081] Also, with a configuration in which the front end of the winnowing fan casing is positioned in front of the front end of the impeller 15 of the handling cylinder 11, and by arranging the winnowing fan 25 in front of the threshing device 4, the sorting air can be efficiently supplied toward the rocking sorting device 21, and the sorting performance can be improved. Also, the transmission can be efficiently performed.

[0082] Also, with a configuration in which the winnowing fan shaft 25A is positioned below the impeller 15 of the handling cylinder 11, and by arranging the winnowing fan 25 in front of the threshing device 4, the sorting air can be efficiently supplied toward the rocking sorting device 21, and the sorting performance can be improved. Also, the transmission can be efficiently performed.

[0083] Also, with a configuration in which the winnowing fan shaft 25A is positioned in front of the rear end of the impeller 15 of the handling cylinder 11, and by arranging the winnowing fan 25 in front of the threshing device 4, the sorting air can be efficiently supplied toward the rocking sorting device 21, and the sorting performance can be improved. Also, the transmission can be efficiently performed.

[0084] Also, with a configuration in which the winnowing fan shaft 25A is positioned in front of the front end of the two bars 17 of the handling cylinder 11, and by arranging the winnowing fan 25 in front of the threshing device 4, the sorting air can be efficiently supplied toward the rocking sorting device 21, and the sorting performance can be improved. Also, the transmission can be efficiently performed.

[0085] Also, with a configuration in which the front end of the winnowing fan casing is positioned substantially in the same position in the front-rear direction as the front end of the impeller 15 of the handling cylinder 11, and by arranging the winnowing fan 25 in front of the threshing device 4, the sorting air can be efficiently supplied toward the rocking sorting device 21, and the sorting performance can be improved. Also, the transmission can be efficiently performed.

[0086] In addition, by positioning the front end of the threshing casing in front of the front end of the impeller 15 of the handling cylinder 11 and the rear end of the casing behind the rear end of the impeller 15, and arranging the threshing casing 25 in front of the threshing device 4, the sorting air can be efficiently supplied to the swinging sorting device 21, and the sorting performance can be improved. Also, the transmission can be efficiently performed.

[0087] In addition, by positioning the front end of the threshing casing in front of the front end of the impeller 15 of the handling cylinder 11 and the rear end of the casing behind the front end of the two-tooth bar 17 of the handling cylinder 11, and arranging the threshing casing 25 in front of the threshing device 4, the sorting air can be efficiently supplied to the swinging sorting device 21, and the sorting performance can be improved. Also, the transmission can be efficiently performed.

[0088] In addition, by positioning the threshing casing 25 in front of the threshing machine with the outer circumference of the threshing casing wider than the front-to-rear length of the impeller 15 of the handling cylinder 11, the sorting air can be efficiently supplied to the swinging sorting device 21, and the sorting performance can be improved. Also, the transmission can be efficiently performed.

[0089] In addition, by positioning the front end of the outer circumference of the blades of the threshing casing 25 below the impeller 15 of the handling cylinder 11 and arranging the threshing casing 25 in front of the threshing machine, the sorting air can be efficiently supplied to the swinging sorting device 21, and the sorting performance can be improved. Also, the transmission can be efficiently performed.

[0090] In addition, by positioning the front end of the outer circumference of the blades of the threshing casing 25 in front of the rear end of the impeller 15 of the handling cylinder 11 and arranging the threshing casing 25 in front of the threshing device 4, the sorting air can be efficiently supplied to the swinging sorting device 21, and the sorting performance can be improved. Also, the transmission can be efficiently performed.

[0091] In addition, with a configuration in which the front end of the outer periphery of the 25 vanes of the threshing cylinder is positioned in front of the rear end of the impeller 15 of the handling cylinder 11, and the rear end of the outer periphery of the 25 vanes of the threshing cylinder is positioned behind the rear end of the impeller 15, by arranging the threshing cylinder 25 in front of the threshing device 4, sorting air can be efficiently supplied toward the swing sorting device 21, and the sorting performance can be improved. Also, the transmission can be performed efficiently.

[0092] In addition, with a configuration in which the front end of the outer periphery of the 25 vanes of the threshing cylinder is positioned in front of the rear end of the impeller 15 of the handling cylinder 11, and the rear end of the outer periphery of the 25 vanes of the threshing cylinder is positioned behind the front end of the two-tooth bar of the handling cylinder 11, by arranging the threshing cylinder 25 in front of the threshing device 4, sorting air can be efficiently supplied toward the swing shelf, and the sorting performance can be improved. Also, the transmission can be performed efficiently.

[0093] On the upper wall of the feeder house 3D of the pre-harvest treatment device 3, a dust box 51 is provided which houses a fan for discharging the dust adhering to the grain straws conveyed by the elevator to the outside.

[0094] As shown in FIGS. 10 to 13, the left part of the handling cylinder drive shaft 40 is connected to the input shaft of a relay box 52 which houses bevel gears or the like for transmitting the output rotation of the handling cylinder drive shaft 40 to the handling cylinder shaft 14.

[0095] The front part of the threshing cylinder cover 53 that covers the upper, lower, and front parts of the threshing cylinder 25 is provided close to the rear surfaces of the left and right vertical frames 30L and 30R. Thereby, the sorting chamber 20 can be lengthened in the front-rear direction, and sorting air can be efficiently blown from the threshing cylinder 25 toward the swing sorting device 21. Although the rear surface of the left vertical frame 30L in FIG. 11 and the front part of the threshing cylinder cover 53 are separated, the rear surface of the left vertical frame 30L and the front part of the threshing cylinder cover 53 can also be connected.

[0096] Behind and on the rear side of the second spiral shaft 28A, a swing sorting drive shaft 21A of the swing sorting device 21 is provided. On the right part of the first spiral 27, a first grain elevating cylinder 54 for elevating grains to the grain tank 7 is provided. On the right part of the second spiral 28, a second grain elevating cylinder 55 for re-conveying grains with attached branch stalks and the like and second-class materials such as cut straws to the swing sorting device 21 is provided. Note that only the lower part of the first grain elevating cylinder 54 is shown in FIGS. 12 and 13.

[0097] As shown in FIG. 14, the output rotation of the engine E is transmitted to the traveling device 2 via a hydraulic continuously variable transmission (HST) 60 and a transmission 61 provided on the downstream side of the transmission path.

[0098] The output rotation of the engine E is transmitted to the countershaft 31 via a threshing clutch 63 and a pulley 31A provided on the downstream side of the transmission path. The output rotation transmitted to the countershaft 31 is transmitted to the handling cylinder drive shaft 40 via a pulley 31B and a pulley 40A. The output rotation transmitted to the handling cylinder drive shaft 40 is transmitted to the handling cylinder shaft 14 via a relay box 52 to rotate the handling cylinder 11.

[0099] The output rotation transmitted to the handling cylinder drive shaft 40 is transmitted to the elevator drive shaft 34 via a pulley 40B and a harvesting clutch 64 to drive a pre-harvest processing device 3 such as the feeder house 3D. The forward rotation drive of the pre-harvest processing device 3 is not output from the countershaft 31. Thereby, the torsional moment applied to the countershaft 31 can be reduced and the torsional angle generated in the countershaft 31 can be suppressed.

[0100] The output rotation transmitted to the countershaft 31 is transmitted to the elevator drive shaft 34 via a pulley 31D and a harvesting reverse clutch 65 to drive a pre-harvest processing device 3 such as the feeder house 3D in a reverse rotation direction opposite to the normal drive direction. Thereby, when the grain straws are clogged in the pre-harvest processing device 3, particularly in the feeder house 3D, the connection of the harvesting clutch 64 can be released, the harvesting reverse clutch 65 can be connected, and the elevator etc. can be driven in the reverse direction to remove the clogged grain straws in the feeder house 3D.

[0101] The output rotation transmitted to the counter shaft 31 is transmitted to the winnowing pan 25 via the pulley 31E to drive the winnowing pan 25, and is transmitted to the first spiral 27, the second spiral 28, and the swing sorting device 21 via the pulley 31C to drive the first spiral 27, the second spiral 28, and the swing sorting device 21. Since the configuration is such that the winnowing pan 25, the first spiral 27, and the second spiral 28 are once driven from the counter shaft 31 via a belt, vibration generated in the swing sorting device 21 or the like can be suppressed from being propagated to the counter shaft 31.

[0102] The output rotation of the engine E is transmitted to the discharge auger 8 via the auger clutch 67 provided on the downstream side of the transmission path to drive the discharge auger 8.

Explanation of Signs

[0103] 1 Body frame 2 Travel device 3 Pre-cutting treatment device 4 Threshing device 11 Handling cylinder 25 Winnowing pan 25A Winnowing pan shaft 30L Left vertical frame 30R Right vertical frame 31 Counter shaft 32 Counter support cylinder 34 Elevator drive shaft 35 Elevator drive cylinder 37 Elevator reverse drive shaft 38 Elevator reverse drive cylinder 40 Handling cylinder drive shaft 41 Handling cylinder drive cylinder 42 Support member 50 Threshing inlet 50F Front end

Claims

1. A general-purpose combine harvester that is provided with a pre-harvest treatment device (3) on the front side of a machine body frame (1) equipped with a traveling device (2), and threshes and sorts the cut cereal straws using a threshing device (4) mounted on the machine body frame (1). The machine body frame (1) has left and right vertical frames (30L, 30R) erected thereon, and a threshing inlet (50) of the threshing device (4) that communicates with the feeder house (3D) of the pre-harvest treatment device (3) is provided between the left and right vertical frames (30L, 30R). A counter support cylinder (32) that pivotally supports a counter shaft (31) is provided below the threshing inlet (50) to connect the front sides of the left and right vertical frames (30L, 30R), and a winnowing fan shaft (25A) that pivotally supports a winnowing fan (25) is connected to the rear sides of the left and right vertical frames (30L, 30R) at the lower part thereof to integrally form the front part of the threshing device (4).

2. The general-purpose combine harvester according to claim 1, characterized in that the left and right vertical frames (30L, 30R) are connected by an elevator drive shaft (34) that crosses inside the threshing inlet (50).

3. The general-purpose combine harvester according to claim 1, characterized in that an elevator drive shaft (34) of the pre-harvest treatment device (3) is pivotally supported on the left and right vertical frames (30L, 30R) across the threshing inlet (50), and the upper side of the threshing inlet (50) is connected to the left and right vertical frames (30L, 30R) by a support member (42) of a handling cylinder drive shaft (40).

Images