TWI472293B - Threshing device - Google Patents

Description

Threshing device

The present invention relates to a threshing apparatus having a threshing drum.

Conventionally, in order to reduce the burden of the production work, there has been proposed a threshing apparatus having a threshing drum configured to have a cross member on the support member, and the throttling member is provided with the threshing teeth in the front-rear direction. The support member is fixed to a front end portion, an intermediate portion, and a rear end portion of the barrel shaft extending in the front-rear direction of the machine body (see Patent Document 1).

Further, there has been proposed a threshing apparatus having a threshing drum configured to erect a cross member provided with threshing teeth in a front-rear direction at a vertex portion of a substantially hexagonal supporting member, and closed by a shielding plate The support member is fixed to a front end portion, an intermediate portion, and a rear end portion of the barrel shaft extending in the front-rear direction of the machine body in a space between the adjacent crosspiece members in the circumferential direction (see Patent Document 2).

[Prior Art Literature]

[Patent Document 1] Japanese Patent Laid-Open No. 11-28019

[Patent Document 2] Japanese Patent Laid-Open Publication No. 2011-182654

However, in the barrel of the patent document 1, there is a possibility that the grain stem having a long length of harvesting is entangled in the crosspiece member, and the threshing performance and the transport performance to the rear are lowered.

Further, in the barrel of Patent Document 2, when a large amount of grain stalk is supplied to the front portion of the barrel, since the support member is disposed at the front end portion, the intermediate portion, and the rear end portion, there is a possibility that threshing is performed: The shielding plate at the front portion of the drum is deformed by the reaction force received from the grain stalk, so that the threshing performance and the backward conveying performance are lowered.

Therefore, the main object of the present invention is to solve the above problems, and a secondary object is to propose a threshing apparatus for a combine harvester that can be easily maintained and inspected.

The present invention which solves the above problems is as follows.

That is, the invention according to claim 1 is a threshing apparatus including a threshing drum (11) having a cylindrical body (61), and the cylindrical body (61) is erected by a threshing drum shaft (12) Between the front plate (10A) and the rear plate (10C) of the threshing chamber (10), a threshing net (50) is disposed on the outer periphery of the threshing drum (11), and is provided on the lower side of the threshing chamber (10). The screening chamber (20) of the swing screening device (21), wherein the threshing drum (11) includes a front end portion of the cylindrical body (61) supported by a front portion of the barrel (12) a front support member (13); a rear support member (15) for supporting a rear end portion of the tubular body (61) to a rear portion of the barrel shaft (12); and an intermediate portion of the tubular body (61) in the front-rear direction The intermediate portion supporting member (14) of the barrel shaft (12) is disposed at a position offset from the center portion of the cylindrical body (61) in the front-rear direction toward the front side.

In the threshing apparatus according to the first aspect of the invention, the intermediate portion in the front-rear direction of the threshing chamber (10) is provided with an intermediate plate (10B), and the intermediate plate (10B) is placed in the threshing chamber (10). Resistance is applied to the rearward conveyance of the processed material, and the intermediate portion supporting member (14) is provided on a portion on the front side of the intermediate plate (10B).

In the threshing apparatus according to the third aspect of the invention, the threshing apparatus is configured to support the threshing net (50) by the intermediate plate (10B).

In the threshing apparatus according to any one of claims 1 to 3, the intermediate portion supporting member (14) is disposed at a portion near the transport end portion of the transport rack (22), and the transport rack ( 22) A front portion of the above-described swing screening device (21) is provided in the front-rear direction.

In the threshing apparatus according to the invention of claim 5, the threshing apparatus includes a plate (60) having a space at a distance from the axial direction of the barrel shaft (12). The plurality of processing teeth (60A) are provided with a plurality of the plates (60) disposed on the outer circumferential surface of the cylindrical body (61) at intervals in the circumferential direction.

According to the threshing apparatus according to the fifth aspect of the invention, in the invention according to the sixth aspect, the support placed on the inner peripheral surface side of the cylindrical body (61) is supported by a fastening tool (17G) that penetrates the circumferential surface of the cylindrical body (61). The member (17A) is fastened together with the above plate.

In the threshing apparatus according to the seventh aspect of the invention, the support member (17A) enters the cut-in portion (14A) formed in the intermediate portion support member (14).

In the threshing apparatus according to the first aspect of the invention, the threshing drum cover (40) is provided on the upper portion of the threshing chamber (10), and the threshing drum cover (40) covers the upper portion of the threshing drum (11). A dust-feeding guide (42) for guiding a processed object in the threshing chamber (10) is provided on an inner surface side of the threshing drum cover (40), and an inner surface of the top portion (40A) of the threshing cylinder cover (40) is The interval (X1) between the outer peripheral faces of the cylindrical body (61) is formed between the inner surfaces of the left and right side portions (40B, 40C) of the threshing cylinder cover (40) and the outer peripheral surface of the cylindrical body (61). The interval (X2, X2) is large.

According to the threshing apparatus of the eighth aspect of the invention, the inner peripheral surface of the left and right side portions (50B, 50C) of the threshing net (50) and the outer peripheral surface of the cylindrical body (61) are interposed between The interval (Y2, Y2) is formed larger than the interval (Y1) between the inner peripheral surface of the lower portion (50A) of the threshing net (50) and the outer peripheral surface of the cylindrical body (61).

According to the threshing apparatus according to claim 8 or 9, in the invention according to claim 10, the plurality of dust-feeding guides (42) are disposed above the front portion of the barrel (11) from the front portion to the rear portion, and are configured to be linked. The posture of each of the dust-feeding guides (42) with respect to the barrel of the barrel is changed.

Effect of the invention

According to the invention of the first aspect, the intermediate portion supporting member (14) is disposed at a position offset from the center portion in the front-rear direction of the cylindrical body (61). Therefore, it is possible to prevent the reaction force from the grain stalk due to the large amount of the threshed processed material. The deformation of the cylindrical body (61) at the front portion of the large cylindrical body (61) can increase the strength of the barrel (11), thereby improving the threshing performance, and can suppress the deformation of the barrel (11) and improve the durability.

According to the invention of the second aspect of the invention, it is possible to prevent the deformation of the tubular portion (17) due to the reaction force of the grain stem remaining on the front side of the intermediate plate (10B), and the effect of the invention according to the first aspect of the invention. The strength of the barrel 11 is further increased to improve the degranulation performance.

According to the invention of claim 3, in addition to the effect of the invention described in claim 2, by supporting the threshing net (50) by the intermediate plate (10B), the rigidity of the threshing net (50) can be increased, and the threshing drum can be improved (11). Degranulation performance).

According to the invention of the fourth aspect of the invention, the intermediate portion supporting member (14) is disposed at a portion in the vicinity of the transport end portion of the transport rack (22). Since the transport rack (22) is provided in the front portion of the swing screening device (21) in the front-rear direction, the strength of the portion near the transport rack (22) in the cylinder (61) of the barrel (11) can be increased. The amount of grain leakage from the threshing net (50) on the front side of the vicinity of the end portion of the transport rack (22) is increased to recover the grain at an early stage, so that the screening efficiency of the screening chamber (20) can be improved.

According to the invention of the fifth aspect of the invention, in the outer peripheral surface of the cylindrical body (61), a plurality of plates (60) are arranged at intervals in the circumferential direction, so that the grain stalk is It is not easy to entangle the plate (60), and it is possible to suppress an increase in the threshing load caused by the grain stalk that is entangled with the plate (60).

According to the invention of the sixth aspect of the invention, the fastening tool (17G) penetrating the circumferential surface of the cylindrical body (61) is disposed in the cylindrical body (61). The peripheral side support member (17A) and the plates (18, 19) are fastened together, and the above plates (18, 19) are mounted on the outer peripheral side of the cylindrical body (61) and have a plurality of threshing teeth (18A, 19A). Therefore, the rigidity of the cylindrical body (61) against deformation can be further improved.

According to the invention of the seventh aspect of the invention, the support member (17A) enters the cut-in portion (14A) formed in the middle side plate (14), so that the threshing drum (11) can be shortened. ) production time.

According to the invention of the eighth aspect of the invention, in the upper portion of the processing chamber (10), a threshing drum cover (40) covering the upper portion of the barrel (11) is provided on the upper portion of the processing chamber (10), and the barrel is placed on the barrel The inner surface side of the cover (40) is provided with a dust guide (42) for guiding the processed material in the threshing chamber (10), and the inner surface of the top (40A) of the threshing cylinder cover (40) and the above-mentioned cylinder (61) The interval (X1) between the outer peripheral faces is formed to be larger than the interval between the inner surfaces of the left and right side portions (40B, 40C) of the threshing cylinder cover (40) and the outer peripheral surface of the cylindrical body (61) ( Since X2 and X2 are large, the threshed processed material in the processing chamber (10) can be efficiently conveyed toward the rear side of the processing chamber (10), and clogging of the processing chamber (10) can be suppressed.

According to the invention of the ninth aspect of the invention, the inner circumferential surface of the left and right side portions (50B, 50C) of the threshing net (50) and the outer circumferential surface of the cylindrical body (61) are obtained by the invention according to the eighth aspect of the invention. The interval (Y2, Y2) is formed to be larger than the interval (Y1) between the inner peripheral surface of the lower portion (50A) of the threshing net (50) and the outer peripheral surface of the cylindrical body (61), so that the supplied supply can be reduced. The threshing residue of the grain stalk can improve the threshing efficiency.

According to the invention of claim 10, in addition to the effects of the invention described in claim 8 or 9, a plurality of dust-feeding guides (42) are disposed from the front portion to the rear portion of the barrel (11), and can be linked. Since the posture of each of the dust-feeding guides (42) with respect to the barrel (12) is changed, the threshing processed material in the processing chamber (10) can be more efficiently conveyed toward the rear side of the processing chamber (10).

Hereinafter, embodiments of the present invention will be described in detail with reference to the accompanying drawings. Further, the directions are expediently illustrated for ease of understanding, but the configuration is not limited thereto.

As shown in FIG. 1 and FIG. 2, in the general-purpose combine harvester, a traveling device 2 composed of a pair of right and left crawler belts for walking on the soil surface is provided below the body frame 1, and is provided on the upper left side of the body frame 1. The threshing apparatus 3 which performs threshing and screening is provided in the front of the threshing apparatus 3, and the pre-harvesting processing apparatus 4 which collects the grain stalk of the field. The grain which has been subjected to threshing and screening by the threshing apparatus 3 is stored in the grain tank 5 provided in the right side of the threshing apparatus 3, and the stored grain is discharged to the outside through the discharge cylinder 7. Further, an operation portion 6 is provided on the upper right side of the body frame 1, and the operation portion 6 is provided with an operation portion for the operator to board.

The pre-harvesting processing device 4 is composed of a squeezing device 4A, a cross cutter device 4B, a screw device 4C, a feed house 4D, and the like, and rice, wheat, soybean, and harvested by the squeezing device 4A and the cross cutter device 4B. The grain stalks such as buckwheat are collected in front of the feeding mechanism 4D by the screw device 4C, and then lifted and transported to the threshing device 3 by the feeding mechanism 4D.

As shown in FIGS. 3 to 5, the threshing apparatus 3 includes a processing chamber 10 for performing threshing of grain stalks on the upper portion, and a screening chamber 20 for screening the grains after threshing on the lower side of the processing chamber 10. In addition, the waste straw which has been threshed in the processing chamber 10 is conveyed backward by the barrel 11, and is discharged to the outside from the end portion of the barrel 11. Further, the arrows in FIGS. 3 and 5 indicate the rotation direction of the barrel 11, and in the front view, the barrel 11 is rotated counterclockwise.

(granulation chamber)

In the front and rear plates 10A and 10C of the processing chamber 10, the front and rear ends of the threshing drum shaft 12 that are erected in the front and rear direction of the threshing drum 11 are pivotally supported to be rotatable, respectively, in the middle plate 10B of the threshing chamber 10. As shown in FIGS. 6 and 7, a descaling net 50 stretched on the lower side of the barrel 11 is supported. Further, in the upper portion of the intermediate plate 10B, in order to reduce the resistance of the grain stalk which is conveyed rearward while being threshed, an arc-shaped cutout portion is formed from the upper portion toward the base portion. Further, it is more preferable to provide a moving unit that moves the intermediate plate 10B in the vertical direction in accordance with the amount of the grain stalk supplied.

(granulation drum)

As shown in Fig. 8, Fig. 21, and Fig. 22, the barrel 11 is formed of a cylindrical body 61, and the cylindrical body 61 is provided on the front side plate (front support member) 13 of the front end portion of the barrel shaft 12, and is provided on the barrel of the barrel. The middle side plate (intermediate portion supporting member) 14 of the front side portion of the 12 and the rear side plate (rear supporting member) 15 provided at the rear end portion of the barrel shaft 12 are supported, and the cylindrical body 61 has a truncated cone shape at the front portion. The spiral portion 16 is provided with a cylindrical tubular portion 17 at the rear portion. On the outer circumferential surface of the tubular portion 17, a plate 60 is circumferentially provided at intervals of 60 degrees in the circumferential direction, and a threshing tooth 60A is erected on the plate 60. Further, the processing gear 60A includes processing teeth 18A and 19A (first first processing teeth 18A and second processing teeth 19A), and the plate 60 includes plates 18 and 19 (first plate 18 and second plate 19).

The front side portion (the portion on the front side from the center in the front-rear direction) of the cylindrical threshing drum shaft 12 made of a steel material or the like is provided with a substantially triangular fixing member 12A that fixes the intermediate side plate 14 behind the threshing drum shaft 12 The end portion is provided with a substantially triangular fixing member 12B that fixes the rear side plate 15. Further, a fastening member such as a bolt is fixed to the front surface of the fixing member 12A by welding, and a fastening member such as a bolt is fixed to the rear surface of the fixing member 12B by welding. Further, in the present embodiment, one fixing member 12A is provided on the front side portion of the barrel roller shaft 12 corresponding to one middle side panel 14, but the number and position of the fixing members 12A are set according to the number and position of the provided middle side panels 14. different.

The disk-shaped front side plate 13 made of a steel material or the like is formed to have a larger diameter than the outer diameter of the front end portion of the take-up spiral portion 16 to prevent the supplied grain stem from falling forward. Further, the center portion of the front side plate 13 is fixed to the barrel shaft 12 by welding or the like, and the rear surface of the front side plate 13 is coupled to a curved portion extending toward the center of the front end portion of the take-in screw portion 16 by a fastening means such as a bolt.

The disk-shaped intermediate side plate 14 made of a steel material or the like is a member that connects the barrel roller shaft 12 and the tubular portion 17, and prevents the tubular portion 17 from being deformed by the pressing of the grain stalk when a large amount of grain stalks are supplied at a time.

As shown in FIG. 11, a substantially rectangular cut-in portion 14A is formed in the outer peripheral portion of the middle side plate 14 at intervals of 60 degrees in the circumferential direction, so that the support member 17A fixed to the inner peripheral portion of the tubular portion 17 by welding or the like is provided. The slack is fitted, and a projection 14B is formed in a portion adjacent to the right side of each of the cut portions 14A, and the projection 14B is engaged with a notch portion 17D formed in the inner peripheral portion of the tubular portion 17 shown in Fig. 10 . Further, as shown in FIG. 9, the center portion of the middle side plate 14 is coupled to the fixing member 12A provided on the barrel roller shaft 12 by a fastening means such as a bolt.

The grain stalk conveyed rearward receives resistance due to the intermediate plate 10B of the threshing chamber 10 provided above the front side portion of the sieve 23, so that a large amount of grain stalk is retained on the front side of the intermediate plate 10B, and the retained grain stalk presses the threshing drum 11 The barrel portion 17. Therefore, in order to prevent the tubular portion 17 from being deformed by the pressing of the retained grain stalk, it is preferable to provide the intermediate side plate 14 of the barrel 11 at a position in the vicinity of the front side of the intermediate plate 10B. Further, in the present embodiment, one middle side plate 14 is provided in the front side portion (the portion on the front side from the center in the front-rear direction) of the tubular portion 17 extending in the front-rear direction, but two or more middle side plates 14 may be provided. . Further, the plurality of middle side plates 14 can be provided from the front side portion of the tubular portion 17 to the rear side portion (a portion on the rear side from the center in the front-rear direction).

In the outer peripheral portion of the intermediate side plate 14, the protruding portion 14B is engaged with the groove portion 17D of the tubular portion 17, and the outer peripheral portion of the intermediate side plate 14 is fixed to the inner peripheral portion of the tubular portion 17 by welding or the like. The connection between the center portion of the middle side plate 14 and the fixing member 12A of the barrel roller 12 is inserted into the threshing drum through the substantially triangular insertion hole 14C formed in the middle side plate 14 and the substantially triangular insertion hole 15C formed in the rear side plate 15. After the shaft 12 is rotated and the barrel rotating shaft 12 is rotated by 60 degrees, the above-described connection is performed. In addition, a work window (not shown) that can be opened and closed at the front side of the tubular portion 17 is opened, and a connection operation such as a bolt to the fixing member 12A of the barrel shaft 12 is performed.

A disk-shaped rear side plate 15 made of a steel material or the like is a member that connects the barrel roller shaft 12 and the tubular portion 17 to prevent the tubular portion 17 from being deformed by the pressing of the grain stalk when a large amount of grain stalks are supplied at a time.

As shown in FIG. 12, the outer peripheral portion of the rear side plate 15 is formed with a projection 15B at intervals of 60 degrees in the circumferential direction. The protruding portion 15B is engaged with a notch portion 17E formed in the inner peripheral portion of the tubular portion 17 shown in Fig. 10 . Further, as shown in FIG. 9, the center portion of the rear side plate 15 is coupled to the fixing member 12B provided on the barrel roller shaft 12 by a fastening means such as a bolt. In addition, in the rear surface of the rear side plate 15, in order to prevent the waste straw discharged from the end portion of the barrel 11 to the outside of the machine, the waste straw is wound around the barrel roller 12 or the fixing member 12B, and the angle-shaped removing member 15D made of steel or the like is used. The rear side plate 15 is fixed by welding at intervals of 180 degrees in the circumferential direction, and the removal member 15D has a receding angle of about 30 degrees with respect to the rotational direction.

The outer peripheral portion of the rear side plate 15 is fixed to the inner peripheral portion of the tubular portion 17 by welding or the like after the projection portion 15B is engaged with the groove portion 17E of the tubular portion 17. The connection between the center portion of the middle side plate 15 and the fixing member 12B of the barrel roller 12 is inserted into the threshing drum through the substantially triangular insertion hole 14C formed in the middle side plate 14 and the substantially triangular insertion hole 15C formed in the rear side plate 15. After the shaft 12 is rotated and the barrel rotating shaft 12 is rotated by 60 degrees, the above-described connection is performed. Further, a connection operation such as a bolt or the like to the fixing member 12B of the barrel shaft 12 is performed from the rear of the tubular portion 17.

In the outer peripheral surface of the truncated-cone-shaped spiral portion 16 made of a steel material or the like, a conveying screw 16A that is inclined toward the rear side is provided to convey the grain stalk supplied rearward, and the lower portion of the conveying screw 16A is circumferentially The substantially triangular ribs 16B are provided at predetermined intervals, thereby increasing the rigidity of the conveying screw 16A. Further, the end portion of the spiral portion 16 is fixed to the front end portion of the tubular portion 17 by welding or the like.

As shown in FIG. 11 and FIG. 12, a support member extending in the front-rear direction is fixed to the inner circumferential surface of the cylindrical tubular portion 17 made of a steel material or the like by welding or the like at intervals of 60 degrees in the circumferential direction. 17A, the support member 17A is fixed to each of the plate 18 on which the plurality of processing teeth 18A are provided and the plate 19 on which the plurality of processing teeth 19A are erected.

The support member 17A is a channel member having a gate shape in cross section, and the top portion 17B (a portion facing the inner circumferential surface of the tubular portion) is formed in an arc shape toward the outside, in order to set the inside of the tubular portion 17 The circumferential surface is firmly fixed to the support member 17A, and the curvature of the top portion 17B is formed to be substantially the same as the curvature of the cylindrical portion 17. Further, a fastening member such as a nut is fixed to the inner surface of the top portion 17B of the support member 17A by welding, and the leg portions 17C extending inwardly of the support member 17A are loosely fitted in the cut portion 14A and the rear side plate of the middle side plate 14. In the cut-in portion 15A of 15, the middle side plate 14 and the rear side plate 15 are not fixed by welding or the like.

On the outer circumferential surface of the tubular portion 17, a substantially plate-like plate 18 made of a steel material or the like and a substantially plate-shaped plate 19 made of a steel material or the like are alternately arranged at intervals of 60 degrees in the circumferential direction, and the plate 18 is formed on the plate 18 A plurality of processing teeth 18A are provided in the front-rear direction, and a plurality of processing teeth 19A are provided in the front-rear direction of the plate 19. As shown in FIG. 11 and FIG. 12, the plates 18 and 19 are configured such that the support member 17A fixed to the inner circumferential surface of the tubular portion 17 and the fastening unit (fastening tool) 17G such as a bolt are detachably attached. The tubular portion 17 is held by the support member 17A and the plates 18, 19. Further, the plates 18 and 19 have an arc shape toward the outer square, and the curvatures of the plates 18 and 19 are substantially the same as the curvature of the tubular portion 17.

In the present embodiment, the outer peripheral surface of the tubular portion 17 is alternately arranged at intervals of 60 degrees in the circumferential direction: a plate 18 on which the threshing teeth 18A are erected; and a plate 19 on which the threshing teeth 19A are erected However, as shown in FIG. 13, the plate 18 on which the threshing teeth 18A are provided and the plate 19 on which the threshing teeth 19A are provided may be alternately arranged at intervals of 45 degrees in the circumferential direction. Further, instead of the substantially plate-shaped plates 18 and 19, square tubular plates 18 and 19 made of steel or the like may be used.

As shown in FIG. 14 , in order to reduce the number of components, the plates 98 and 99 having the protruding portions 98B and 99B formed on the outer side portion may be coupled to the tubular portion 97 by fastening members such as bolts, and the cutting teeth 98A and 99A may be inserted. The holes formed in the protruding portions 98B, 99B of the plates 98, 99 and the holes formed in the cylindrical portion 97 are fixed to the processing teeth 98A, 99A and the plates 98, 99 by welding or the like. In addition, as shown in FIG. 15, two sheets 98 and 99 in which the protruding portions 98B and 99B are formed in the outer side portion may be laminated, and the tubular member 97 may be connected to the tubular portion 97 by a fastening member such as a bolt, and the processing gears 98A and 99A may be inserted through the processing. The holes formed in the protruding portions 98B, 99B of the plates 98, 99 are fixed to the processing teeth 98A, 99A and the plates 98, 99 by welding or the like. Further, in this case, it is not necessary to machine the hole in the outer peripheral surface of the tubular portion 97, and it is also advantageous in reducing the manufacturing cost.

As shown in Fig. 8, the interval between the processing teeth 18A of the plate 18 adjacently mounted on the outer peripheral surface of the tubular portion 17 and the interval between the processing teeth 19A of the plate 19 are such that the interval between the processing teeth 19A is the interval of the processing teeth 18A. Two times, the phase of the processing gear 18A and the processing gear 19A are different by 1/2 phase (1/2 interval), and the arrangement of the processing gear 18A and the processing gear 19A does not overlap each other in the side view, thereby preventing supply The grain stalk is wound around the processing teeth 18A and 19A, and the threshing performance can be improved, and the grain stalk can be efficiently transported to the rear.

In the present embodiment, the interval between the processing teeth 19A is twice the interval between the processing teeth 18A, but the interval between the processing teeth 19A may be three times or four times the interval between the processing teeth 18A. Further, as shown in Fig. 16, the plates 18 and 19 may be divided into two in the front-rear direction. When the threshing teeth 18A and 19A which are erected on the front side plates 18C and 19C are worn out, the rear side plates 18D and 19D can be attached to the outer peripheral surface of the tubular portion 17 when they are separated into two parts. Only the front side plates 18C and 19C are removed, and the replacement work becomes easy. Further, in the present embodiment shown in Fig. 16, although the plates 18 and 19 are divided into two in the front-rear direction, they may be divided into three parts.

As shown in FIG. 8, FIG. 11, and FIG. 12, the processing teeth 18A and 19A which consist of a steel material etc. are formed in the column shape, and the fall of the thre Further, the processing teeth 18A and 19A are respectively fixed to the plates 18 and 19 by welding or the like with a receding angle of about 10 degrees with respect to the rotation direction of the barrel 11 . Further, in order to improve the threshing performance at the front side portion of the barrel 11, and to improve the conveyance performance of the grain stalk on the rear side portion of the barrel 11, it is preferable to reduce the front side portion of the sheets 18 and 19 (in comparison with the middle side plate). The receding angles of the processing teeth 18A and 19A of the portion 14 on the front side increase the receding angle of the processing teeth 18A and 19A which are provided on the rear side portions of the plates 18 and 19 (the portions rearward of the center side plate 14). Alternatively, the receding angles of the processing gears 18A and 19A rearward of the front end of the guide sheet 10E at the rear portion of the processing chamber 10 to be described later may be increased, or may be increased stepwise or continuously from the front side toward the rear side. The receding angle of the threshing teeth 18A, 19A.

In order to increase the filtration rate from the granule 50 and prevent the surface of the grain from being damaged, it is preferable to lower the height of the granules 18A and 19A on the front side and to increase the height of the granules 18A and 19A on the rear side. Further, the heights of the processing teeth 18A and 19A may be increased stepwise or continuously from the front side toward the rear side.

In the case where the plates 18, 19 are divided into two parts, as shown in Fig. 17, spacers 18E, 19E may be provided between the rear side plates 18D, 19D and the tubular portion 17, so as to be erected on the rear side plates 18D, 19D. The height of the threshing teeth 18A and 19A is higher than the threshing teeth 18A and 19A which are provided in the front side plates 18C and 19C. Further, as shown in FIG. 18, a fastening member 17F such as a nut may be fixed to the inner surface of the top portion 17B of the support member 17A by welding, and the fastening member 17F such as the nut may be used to fasten a thread formed at the base end portion. The processing teeth 18A and 19A adjust the height of the processing teeth 18A and 19A by the amount of screwing of the processing teeth 18A and 19A. Further, the height of the processing teeth 18A, 19A means the height from the outer surface of the tubular portion 17 to the distal end portions of the processing teeth 18A, 19A.

In the upper portion of the processing chamber 10, as shown in Figs. 3 to 5, a threshing cylinder cover 40 in which a plurality of dust-transmitting guides 42 are arranged on the inner surface is provided. The threshing drum cover 40 is opened and closed around the shaft 41 extending in the front-rear direction in a front view.

As shown in Fig. 5, the barrel 11 is supported by the front and rear plates 10A and 10C of the processing chamber 10 by the barrel roller 12, and the threshing drum 11 is disposed in order to efficiently carry the grain stalks to the rear of the dust-feeding guide 42 to be described later. The distance X1 between the outer peripheral surface of the tubular portion 17 and the top portion 40A of the threshing drum cover 40 is set larger than the distance X2 between the outer peripheral surface of the tubular portion 17 of the barrel 11 and the side portions 40B, 40C of the threshing drum cover 40. .

Further, the distance Y1 between the outer circumferential surface of the tubular portion 17 of the barrel 11 and the lower portion 50A of the descaling net 50 is set to be larger than the outer circumferential surface of the tubular portion 17 of the barrel 11 and the side portions 50B, 50C of the debonding net 50. The distance Y2 is small to efficiently perform threshing to reduce the threshing residue.

The waste straw after the threshing is discharged to the outside from the end portion of the barrel 11 through the discharge port 10D provided at the rear portion of the processing chamber 10. As shown in Fig. 5, the discharge port 10D is provided in the upper portion on the downstream side in the rotation direction of the barrel 11 (the position facing the position of the threshing drum 11 at 12 o'clock to 3 o'clock), so that the waste straw can be efficiently discharged to the outside. discharge. In addition, a guide plate 10E that extends in the left-right direction and is inclined downward toward the rear is provided below the end portion of the threshing net 50 of the processing chamber 10 so as to guide waste such as waste straw leaking from the end portion of the threshing drum 11 To the rear side of the swing screening device 21, a substantially quadrangular collecting plate 10F is provided in the front-rear direction below the end portion of the threshing drum 11 of the processing chamber 10 so as to guide the waste straw passing through the discharge port 10D to the outside.

On the inner surface of the barrel cover 40, in order to efficiently carry out the rearward conveyance of the grain stems, six dust-feeding guides 42 made of a steel material or the like are arranged in parallel.

The lower end portion of the dust supply guide 42 is inclined downward from the left end portion (upstream side in the rotation direction of the barrel 11) to reduce the resistance to the grain stalk, and then cut from the lower end portion toward the base portion facing the outer circumference of the barrel 11 The arc shape is used to increase the efficiency of transporting the grain culms rearward, and then tilting downward from the intermediate portion in the substantially width direction to efficiently evacuate the waste straw, and the lower end portion of the dust supply guide 42 and the outer periphery of the threshing drum 11 The interval between the faces is widened.

By swinging the rotating lever 46 to change the inclination angle of the dust-feeding guide 42, the grain stalk can be efficiently transported rearward.

Each of the dust-transmitting guides 42 is rotatably supported by the shaft 43, and the shaft 43 is provided at substantially the center in the width direction of the dust-feeding guide 42, and the left upper portion of each of the dust-feeding guides 42 is connected to each other by a connecting rod 44 extending forward and backward. . The front portion of the connecting rod 44 is fixed to the lower portion of the shaft 45 by welding or the like, and the shaft 45 is rotatably supported by the supporting member 47 provided on the outer surface of the threshing drum cover 40, and is fixed at the upper portion of the shaft 45 by welding or the like. A rotating lever 46 that extends in a direction substantially orthogonal to the connecting rod 44. Further, in order to prevent the inclination angle of the dust-feeding guide 42 from fluctuating due to the pressing of the grain stalk conveyed rearward, it is preferable that the shaft 43 is disposed to the left side of the center of the dust-feeding guide 42 in the width direction (the rotation direction side of the threshing drum 11) ).

(Second embodiment)

Next, the barrel 11 of the second embodiment will be described in detail. In addition, the same members are denoted by the same reference numerals, and the description thereof will not be repeated.

The interval between the processing teeth 78A of the plate 78 that is adjacently mounted on the outer circumferential surface of the tubular portion 17 and the interval between the processing teeth 79A of the plate 79 are used to efficiently transport the grain culms rearward and to improve the filtration rate from the granulation net 50. As shown in Fig. 19, the interval between the processing teeth 78A and 79A which are provided on the front side portions of the plates 78 and 79 is the interval between the processing teeth 78A and 79A which are provided on the rear side portions of the plates 78 and 79. Times. Further, the processing gears 78A and 79A of the adjacently mounted plates 78 and 79 are shifted in phase at the front side portion, and the processing gear 78A and the processing gear 79A are disposed so as not to overlap each other in the side view, and the phase is made at the rear side. Consistently, the threshing teeth 78A and the threshing teeth 79A overlap each other in a side view. Further, as described above, the interval between the processing teeth 79A that are erected on the plate 79 may be increased to be 2 to 4 times the interval between the granules 78A that are erected on the circumferentially adjacent plates 78.

(Third embodiment)

Next, the barrel 11 of the third embodiment will be described in detail. In addition, the same members are denoted by the same reference numerals, and the description thereof will not be repeated.

In order to prevent the supplied grain stalk from entanglement of the granules 88 and 89, to improve the threshing performance, and to efficiently carry out the grain stalk to the rear, as shown in FIG. 20, the front side portion of the tubular portion 17 is circumferentially separated by 90 degrees. The spacers are alternately arranged around: a plate 88 provided with the threshing teeth 88A; and a plate 89 provided with the threshing teeth 89A, and the rear side portions are alternately arranged at intervals of 60 degrees in the circumferential direction: A plate 88 provided with a threshing tooth 88A; and a plate 89 provided with a threshing tooth 89A are erected. Further, in the third embodiment, the interval between the processing teeth 88A and the interval between the processing teeth 89A are equal, and the phases of the processing gear 88A and the processing gear 89A are aligned in the side view, and the processing gear 88A and the processing gear 89A are in the side view. Overlapping each other. Further, as described above, the interval between the processing teeth 89A which are erected on the plate 89 may be increased to be 2 to 4 times the interval between the granules 88A which are erected on the circumferentially adjacent plates 88.

(screening room)

On the lower side of the processing chamber 10, a screening chamber 20 for screening the threshed processed material leaking from the processing chamber 10 for grain and other straw chips and the like is provided. In the upper portion of the screening chamber 20, a swing screening device 21 is provided. In the lower portion of the screening chamber 20, a fan 25 that sends air to the swing screening device 21 and a valley that is leaked from the swing screening device 21 are provided from the front side toward the rear side. The first receiving bucket 28 of the granules and the second receiving tub 29 for recovering the grain from which the stalks or the like are attached, which are leaked from the oscillating screening device 21. Further, the grain recovered by the No. 1 receiving tub 28 is transported to the grain tank 5, and the grain or the like recovered by the No. 2 receiving tub 29 is transported to the front portion of the threshing drum 11, and is again threshed by the threshing drum 11.

The swing screening device 21 is composed of a transport rack 22 disposed above the blower 25, a screen 23 disposed on the downstream side of the transport rack 22, and a draft rack 24 disposed further downstream of the screen 23.

The transport rack 22 can transport the grain leaked from the processing chamber 10 to the screen 23 disposed on the downstream side, and can tilt the rear portion of the transport rack 22 downward toward the rear or on the upper surface of the transport rack 22 Protrusions or bumps.

The sieve 23 is a sieve for screening foreign matter such as grains and straw chips directly discharged from the grain transported from the transport rack 22 or directly from the processing chamber 10, and the sieve 23 passes the plurality of fixed sieve members in the swinging direction of the swing screening device 21. The fixed screen member is formed by being arranged in parallel at a predetermined interval, and the fixed screen member is formed of a thin plate-like body having a higher inclination position on the downstream side.

The document feeder 24 is a sieve in which grain or the like to which a branch or the like adheres is not selected from the relatively large straw chips which have not leaked from the sieve 23.

The air blowing port 26 of the fan 25 is provided with an upper air passage 26A and a lower air passage 26B which are formed up and down by the wind partition member 27. Further, in the inside of the first receiving tub 28 provided on the rear side of the air blowing port 26, a screw conveyor type first conveyor 28A that communicates with the grain tank 5 is disposed, and is disposed inside the second receiving bucket 29 There is a screw conveyor type second conveyor 29A that communicates with the front portion of the barrel 11.

3. . . Threshing device

4. . . Pre-harvest handling device

5‧‧‧ Grain bin

10‧‧‧Degranulation chamber

10A‧‧‧ front board

10B‧‧‧ Medium board

10C‧‧‧Back board

11‧‧‧ threshing drum

12‧‧‧Barrel roller shaft

13‧‧‧Front side panel (front support member)

14‧‧‧Medium side plate (intermediate support member)

14A‧‧‧cutting department

15‧‧‧ rear side panel (rear support member)

16‧‧‧Into the spiral

17‧‧‧ Tube

17A‧‧‧Support members

17G‧‧‧ fastening tools

18‧‧‧ boards (1st board)

18A‧‧‧ threshing teeth (first threshing teeth)

19‧‧‧ board (2nd board)

19A‧‧‧ threshing teeth (2nd threshing teeth)

20‧‧‧ screening room

21‧‧‧Swing screening device

22‧‧‧Transport

23‧‧‧Fixed screen

24‧‧‧Drafter

40‧‧‧Thicking roller cover

40A‧‧‧ top

40B‧‧‧ side

40C‧‧‧ side

42‧‧‧Dust-feeding guides

50‧‧‧Degranulation net

50A‧‧‧ lower

50B‧‧‧ side

50C‧‧‧ side

61‧‧‧Cylinder

X1‧‧‧ interval

X2‧‧‧ interval

Y1‧‧‧ interval

Y2‧‧‧ interval

Figure 1 is a left side view of the combine.

Figure 2 is a plan view of the combine harvester.

Fig. 3 is a longitudinal sectional front view of the threshing apparatus.

Fig. 4 is a longitudinal sectional left side view of the threshing apparatus.

Fig. 5 is a longitudinal sectional rear view of the threshing apparatus.

Figure 6 is a longitudinal sectional left side view of the barrel and the threshing net.

Figure 7 is a rear elevational view of the threshing drum and the threshing web.

Figure 8 is a longitudinal sectional left side view of the barrel.

Fig. 9 is a cross-sectional view showing the main part of the barrel.

Figure 10 is an enlarged left side elevational view of the main part of the barrel.

Figure 11 is a cross-sectional view taken along line A-A of Figure 8.

Figure 12 is a cross-sectional view taken along line B-B of Figure 8.

Figure 13 is a rear elevational view of a threshing drum having eight rows of plates.

Fig. 14 is a first explanatory diagram of a method of attaching other processing teeth.

Fig. 15 is a second explanatory diagram of a method of attaching other processing teeth.

Fig. 16 is a longitudinal sectional left side view of a barrel having a plate divided into two parts before and after.

Fig. 17 is a first explanatory diagram of a method of adjusting the height of the processing teeth.

Fig. 18 is a second explanatory diagram of a method of adjusting the height of the processing teeth.

Fig. 19 is a left side elevational view of the main part of the barrel of the second embodiment.

Fig. 20 is a left side elevational view of the main part of the barrel of the third embodiment.

Figure 21 is a perspective view of a barrel.

In Fig. 22, (a) is a plan view of the barrel, (b) is a front view of the barrel, (c) is a left side view of the barrel, (d) is a rear view of the barrel, and (e) is a barrel of the barrel Right side view, (f) is a bottom view of the barrel.

12. . . Threshing roller shaft

15. . . Rear side plate (rear support member)

15D. . . Remove component

16. . . Take in the spiral

17. . . Tube

18A. . . Threshing tooth (first threshing tooth)

19A. . . Threshing tooth (2nd threshing tooth)

50. . . Threshing net

60A. . . Threshing tooth

Claims (9)

A threshing apparatus comprising a threshing drum (11) having a cylinder (61), the cylinder (61) being erected on the front plate of the threshing chamber (10) by a threshing drum shaft (12) 10A) and a rear plate (10C), a threshing net (50) is disposed on the outer circumference of the threshing drum (11), and a screening chamber having a swing screening device (21) is provided on the lower side of the threshing chamber (10). (20) The threshing apparatus (11) is characterized in that the threshing drum (11) includes a front support member (13) that supports a front end portion of the cylindrical body (61) on a front portion of the barrel shaft (12); a rear end portion of the cylindrical body (61) is supported by a rear support member (15) at a rear portion of the barrel shaft (12); and an intermediate portion of the cylindrical body (61) in the front-rear direction is supported at an intermediate portion of the barrel shaft (12) The support member (14) is disposed at a position offset from the center portion of the tubular body (61) in the front-rear direction toward the front side in the front-rear direction of the tubular body (61), and has a middle plate in the intermediate portion of the front-rear direction of the threshing chamber (10). (10B), the intermediate plate (10B) applies a resistance to the rearward conveyance of the processed material in the threshing chamber (10), and the intermediate portion supporting member (14) is provided in the intermediate plate (10B) The front side portion. The threshing apparatus according to claim 1, wherein the threshing apparatus is configured to support the threshing net (50) by the intermediate plate (10B). The threshing apparatus according to claim 1 or 2, wherein the intermediate portion supporting member (14) is disposed at the end of the transport of the transport rack (22) At a portion near the end portion, the transport rack (22) is provided in the front portion of the swing screening device (21) in the front-rear direction. The threshing apparatus according to claim 1 or 2, wherein the threshing apparatus includes a plate (60) having a space at a distance from an axial direction of the threshing drum shaft (12) The plurality of processing teeth (60A) are provided with a plurality of the plates (60) disposed on the outer circumferential surface of the cylindrical body (61) at intervals in the circumferential direction. The threshing apparatus according to the fourth aspect of the invention, wherein the support member disposed on the inner peripheral surface side of the cylindrical body (61) is supported by a fastening tool (17G) that penetrates the circumferential surface of the cylindrical body (61) ( 17A) is fastened together with the above plate. The threshing apparatus according to claim 5, wherein the support member (17A) is caused to enter the cut-in portion (14A) formed in the intermediate portion support member (14). The threshing apparatus according to claim 1 or 2, wherein a threshing drum cover (40) is provided on an upper portion of the threshing chamber (10), and the threshing drum cover (40) covers an upper portion of the threshing drum (11). A dust-feeding guide (42) for guiding a processed object in the threshing chamber (10) is provided on an inner surface side of the threshing drum cover (40), and an inner surface of the top portion (40A) of the threshing cylinder cover (40) is The interval (X1) between the outer peripheral faces of the cylindrical body (61) is formed between the inner surfaces of the left and right side portions (40B, 40C) of the threshing cylinder cover (40) and the outer peripheral surface of the cylindrical body (61). The interval (X2, X2) is large. The threshing apparatus according to the first or second aspect of the invention, wherein an inner peripheral surface of the left and right side portions (50B, 50C) of the threshing net (50) and an outer peripheral surface of the cylindrical body (61) are provided. The interval (Y2, Y2) is formed larger than the interval (Y1) between the inner peripheral surface of the lower portion (50A) of the threshing net (50) and the outer peripheral surface of the cylindrical body (61). The threshing apparatus according to claim 7, wherein the plurality of dust-distributing guides (42) are disposed above the front portion of the threshing drum (11) to the upper portion of the rear portion, and are configured to be capable of interlockingly changing the respective feedings. The attitude of the dust guide (42) relative to the barrel of the barrel (12).