JPH0427309Y2 - - Google Patents

Description

[Detailed Description of the Invention] Industrial Application Field The present invention relates to an improvement of a sorting device in a conventional combine harvester.

Conventional technology and problems In general, in a conventional combine harvester, the lower part of the leakage body of the handling chamber in which the handling barrel is mounted on the shaft serves as a sorting section. This is similar to a self-retracting combine harvester, but unlike a self-retracting combine, a regular combine harvester uses a system that supplies the entire crop harvested in the reaping section to the handling chamber of the threshing section. Therefore, there is a drawback that a large amount of waste mixes with the grains and falls into the sorting section below the handling chamber, which inevitably deteriorates the sorting performance. Therefore, conventionally, in many cases, the selection air path is set to be long in the front-rear direction to overcome this drawback. However, when the selection air path was lengthened, the length of the airframe also became longer, which inevitably led to the inconvenience of increasing the size of the aircraft.

As a means to solve the problem, the present invention is a standard type in which a swinging sorter is installed below the leakage body in the handling chamber in which the handling cylinder is mounted on a shaft, and the sorting air is blown in the axial direction of the handling cylinder shaft. In the combine harvester, the above-mentioned oscillating sorting body is formed into two stages, upper and lower, by a chaff sheave and a stepped transfer body having a fine particle leakage net provided below the chaff sheave, and a main winnow is provided on the starting end side of the oscillating sorting body. A sorting air passage A is provided with suction fans above the terminal end, passing above the chaff sheave from the main winnow to the suction fan, and between the main winnow, the chaff sheave, and the stepped transfer body having the fine particle leakage net. A sorting air passage B leading to the air suction fan is provided, and the wind force of the sorting air passage A is configured to be larger than the wind force of the sorting air passage B, and an auxiliary winnow is arranged below the oscillating sorting body. A sorting air path C is provided from the auxiliary winnowing machine to the suction fan through the fine grain leakage net, and the sorting air path C and the sorting air path B are configured to merge above the fine grain leakage net. This is an attempt to solve the above problems.

Function: A strong sorting wind flows in the sorting air passage A from the main winnowing machine to the suction fan passing above the chaff sieve, and by the time leakage from the leakage body falls to the chaff sieve, it is screened by the sorting wind and , debris, etc. are quickly sucked out in advance via a direct suction fan (primary sorting). In addition, a part of the wind in the sorting air passage A enters the handling chamber through the mesh of the leakage body and merges with the handling trunk wind, thereby performing further wind selection in the handling chamber. On the other hand, a sorting air flow weaker than the sorting air in the above-mentioned sorting air passage A flows in the sorting air passage B which passes between the stepped transfer body having the chaff sieve and the fine grain leakage net from the main winnow to the suction fan. The fine grain leakage net is equipped with a fine grain leakage net so that the sorting air from the sorting air path C from the auxiliary winnowing machine and the fine grain leakage net meet above the fine grain leakage net, so that a moderate amount of sorting air passes from below to above. The secondary sorting of grains, etc., which fall onto the stepped transport body and are subjected to the shaking and wind sorting effects, is also carried out better and more efficiently, in combination with the fact that the waste, etc. is discharged in advance by the above-mentioned primary sorting. be exposed.

Embodiment Figure 1 is an overall structural diagram of a conventional combine harvester equipped with the present invention, in which a divider 1 separates the cut portion from an uncut portion, a reel 2 pulls the crop to be harvested, and a cutting blade 3 separates the stem culm. After cutting, the reaped stem culms are conveyed by the conveyor 4 to the auger 5, where they are merged into the center in the width direction of the machine body by the auger 5, and are further partially threshed by the spiral conveyor 6 which also has a threshing function. The whole stem culm is lifted up and conveyed, and the entire stem culm is thrown into the handling chamber 8 from the upper end supply port 7, and these constitute a pretreatment section A. This pre-processing section A is mounted at the front of the traveling machine body so as to be movable up and down about a fulcrum shaft 9. 10 is a hydraulic cylinder for vertical operation.

As shown in FIG. 3, the spiral conveying body 6 consists of a spiral portion 6a formed into a brush shape from an elastic wire material such as synthetic resin, and a processing rod 6b.The spiral portion 6a is set to be slightly longer than the processing rod 6b. There is. By the way, the upper part of the trough-like conveyance guide plate 11 of the spiral conveyor 6 is formed into a net-like or spoke-like leakage body 12, which collects the grains threshed in the pre-processing section A or the scattered grains from the supply port 7. The waste is collected through the leakage body 12 into the sorting section C. Also, the brush-like spiral portion 6
The shaft a rotates while elastically abutting against the gutter-like guide surface 11a and the leakage body 12, thereby preventing damage to the shed particles, prevention of residual grains, and prevention of clogging of the leakage body 12. Incidentally, the spiral portion 5a of the auger 5 is also formed into a brush shape using an elastic wire (the fourth
(see figure). Reference numeral 13 denotes a handling drum which is mounted on a shaft in a forward-sloping manner in the handling chamber 8 of the threshing section (B), and spiral handling teeth 13a and processing teeth 13b are fixed to the outer peripheral surface of the handling cylinder 13, and on the terminal end side of the handling cylinder, A discharge blade 13c having a suction action is integrally provided. Reference numeral 14 denotes a leaking body of the threshing part B, and this leaking body 14 is made by cutting vertical bars 15, horizontal bars 16, and an arcuate partition plate 17, each made of flat steel, into a corrugated inner edge, as shown in FIG. 6, etc. They are combined in a lattice shape through f to form a strong square mesh, and the terminal end faces the discharge culm opening 18. The arcuate partition plate 17 is slightly exposed to the rotation locus of the tip of the treated tooth 13b, and prevents debris from getting caught in the mesh as much as possible.
b and the corrugated surface of the arcuate partition plate 17, the grain culm supplied in the handling chamber 8 is subjected to dividing, squeezing, and vibrating effects, thereby making it possible to perform effective shedding and processing.
FIG. 9 shows an example of the leakage body, and this one is the horizontal bar 16.
a. A rod-shaped vertical crosspiece 15a is inserted through an arcuate partition plate 17a to form a cylindrical cage-shaped leakage body 14a. FIG. 10 shows still another embodiment of the leakage body, in which the terminal end of the leakage body 14b is configured in a cylindrical comb shape as shown in the figure, so that long straw etc. can be smoothly ejected without getting caught. By making the leakage body 14b discharge from the opening 18 and rotating the leakage body 14b in the opposite direction to the rotational direction of the handling barrel 13 by meshing the drive gear 19 with the gear part g provided around the outer peripheral edge of the horizontal bar 16b. , the separation of grain and waste and the leakage effect are promoted. 20 is a screw body, and this screw body 20 is located below the leakage body 14 and
A plurality of rows extend along the leakage body 14 from the starting end to the middle part, and the terminal end is connected to the swinging sorting body 21.
It is placed above. By the way, the oscillating sorter 21
is formed in upper and lower two stages by a chaff sheave 21a and a stepped transfer body 21b' having a fine grain leakage net 21b provided at an appropriate distance below the chaff sheave 21a, and a fine grain leakage net 21b is provided in front of A stroke rack 21c is provided, and the chaff sheave 21a, the stepped transfer body 21b' having the fine particle leakage net 21b, and the stroke rack 21c are designed to constantly swing integrally in the front and back direction. . In the sorting section C, a main winnower 22 is located on the starting end side of the oscillating sorting body 21, and a suction fan 2 is located on the upper side of the terminal end.
3 are arranged respectively. 24 is the most spiral, 25
2 is a second spiral, and 26 is a second material reducing screw for lifting and returning the second material onto the oscillating sorting body 21. Reference numeral 27 is an auxiliary winnow disposed below the swinging sorter 21 between the first spiral 24 and the second spiral 24.

Now, the sorting air path in the present invention is configured as follows. That is, a sorting air path A from the main winnower 22 passing above the chaff sheave 21a of the swinging sorter 21 to the suction fan 23, a passage A from the main winnower 22 to the chaff sheave 21a of the swinging sorter 21, and a fine particle leakage net 21b. A sorting air path B that passes between the stepped transfer body 21b' and the suction fan 23, and the auxiliary winnow 2.
From 7 to the bottom of the first gutter 24a, the fine particle leakage net 21
A sorting air passage C is provided that passes through b and reaches the suction fan 23, and the wind force in the sorting air passage A is transferred to the sorting air passage B.
The configuration is such that the discharge port a of the sorting air passage A is located at a portion of the main winnowing cabinet 22 where the discharge force is strong, and the discharge port b of the sorting air passage B is located at a portion where the discharge force is weak, so that the wind force is larger than that of the wind force. has been done. Further, the sorting air path C and the sorting air path B are arranged to merge above the fine particle leakage net 21b. Furthermore, from the auxiliary winch 27, there is a stroke rack 21c facing in the opposite direction to the sorting air path C.
A sorting air path D is formed that passes from the bottom to the top. In the figure, 28 is a discharge port.

In the configuration as described above, the leakage body 14 of the handling room 8
Cut straw, culm chips, etc. among the unhandled materials leaked from the pipe are roughly sorted by the wind force in the sorting air path A. However, since the wind force in the sorting air path A is relatively strong, the waste such as the cut straw, etc. Before falling onto the chaff sheave 21a of the oscillating sorting body 21, it is directly sucked by the suction fan 23 and discharged outside the machine (primary sorting). Further, the pre-treated granules falling from the terminal end of the screw body 20 onto the chaff sieve 21a are also subjected to the wind force of the sorting air passage A and are air-sorted. A part of the wind power in the sorting air passage A enters the handling chamber 8 through the leakage body 14, joins with the handling drum wind, further performs a wind selection action in the handling chamber 8, and is transferred to the handling drum end side. It is sucked and discharged by the discharge vane 13c provided in the. In addition, the wind from the main winnower 22 (the wind in the sorting air path B) for relatively heavy objects such as shell grains that have fallen onto the stepped transfer body 21b' having the fine grain leakage net 21b is a rather weak wind force. The wind force of the sorting air path C of the auxiliary winnower 27 penetrates from below to the upper part of the fine grain leakage net 21b and merges with the wind force of the sorting air path B above the fine grain leakage net 21b, so that the fine grain leakage net 21b A moderate sorting wind will act on the top, and secondary sorting will also be carried out well. Furthermore, since the handling cylinder 13 is disposed in a downward-sloping manner, the vertical width of the sorting air passage A becomes wider toward the rear, and the efficiency of air sorting is improved. In addition, the selection air path D by the auxiliary chisel 27
is also provided, so the second sorting is also better, and the wind force in the sorting air path D is larger than the wind force in the sorting air path C due to the positional relationship between the discharge ports c and d of the auxiliary winnower 27. Sorting in the second sorting section, where there is a lot of waste, is improved, and leakage defects and third scattering caused by unnecessarily floating grains in the first sorting section are prevented from increasing.

Effects of the Invention As mentioned above, the present invention is applicable to ordinary combine harvesters in which a swinging sorter is provided below the leakage body of the handling chamber in which the handling barrel is mounted on the shaft, and the sorting air is blown in the axial direction of the handling barrel shaft. , the above-mentioned oscillating sorting body is used as a chaff sheave,
A stepped transfer body having a fine particle leakage net provided below is formed into two stages, upper and lower, and a main winnow is disposed at the starting end of the oscillating sorter, and a suction fan is disposed above the terminal end. A sorting air path A is provided from the main winnower to the suction fan passing above the chaff sieve, and a sorting air path B is provided from the main winch to the suction fan passing between the chaff sieve and the stepped transfer body having a fine particle leakage net, The wind force in the sorting air passage A is configured to be larger than the wind force in the sorting air passage B, and an auxiliary winnow is arranged below the oscillating sorter, and the fine grain leakage net is penetrated from the auxiliary winnow. A sorting air passage C leading to the suction fan is provided, and the sorting air passage C and the sorting air passage B are configured so as to meet above the fine grain leakage net. A strong sorting wind flows through the sorting air passage A leading to the leakage body, and the leakage material from the leaking body is swept away by the aforementioned sorting wind before it falls into the chaff sieve, and the debris is quickly removed through a direct suction fan in advance. The primary sorting is carried out well because the waste is suctioned and discharged. In addition, a part of the wind from the sorting air passage A enters the handling chamber through the mesh of the leakage body and merges with the handling trunk wind.
Wind selection can also be carried out within the handling room.
On the other hand, a sorting air that is weaker than the sorting air in the sorting air passage A flows in the sorting air passage B from the main winnowing hole to the suction fan, passing between the chaf sieve and the stepped transfer body having the fine particle leakage net. The sorting air in the sorting air path C from the separately installed auxiliary winnow passes through the fine grain leakage net from below to the top, and merges with the sorting air in the sorting air path B on the fine grain leakage net to prevent fine grain leakage. Since a suitable sorting wind acts on the screen, the secondary sorting of shell grains, etc., which fall onto the stepped conveyor with the fine particle leakage screen and are subjected to the shaking and wind sorting action, is also carried out as described above. Coupled with the fact that the waste is ejected in advance through the primary sorting, the process is better and more efficient, so the present invention allows the length of the sorting section to be set as short as possible, making it possible to downsize the machine. However, it is possible to obtain a high-performance sorting device with great waste disposal.

[Brief explanation of drawings]

Fig. 1 is a vertical side view of a conventional combine harvester equipped with the present invention, Fig. 2 is a cross-sectional front view of the helical conveying body, Fig. 3 is a side view of the helical conveying body, and Fig. 4 is a section of the auger body. 5 is a cross-sectional front view of the threshing section and sorting section, FIG. 6 is a partially cut-away perspective view showing the structure of the leakage body, FIG. 7 is a longitudinal sectional front view of the leakage body, and FIG. FIG. 9 is a perspective view showing another embodiment of the leakage body; FIG. 10 is a perspective view showing still another embodiment of the leakage body; FIG. The figure is a cross-sectional front view of the threshing section equipped with the same leakage body. In the figure, 8 is a handling room, 13 is a handling trunk, 14 is a leakage body,
21 is a swinging sorter, 21a is a chaff sheave, 21
b is a fine particle leakage net, 21b' is a stepped transfer body, 22 is a main winch, 23 is a suction fan, 27 is an auxiliary winch,
A, B, and C are screening air paths, respectively.

Claims (1)

[Scope of utility model registration request] In a normal type combine harvester, a swinging sorter is installed below the leakage body of a handling room in which the handling barrel is mounted on the shaft, and the sorting air is blown in the axial direction of the handling barrel shaft. The oscillating sorting body is formed into two stages, upper and lower, with a stepped transfer body having a fine particle leakage net provided at the bottom, and a main winnowing machine is disposed on the starting end side of the oscillating sorting body, and a suction fan is disposed above the terminal end side. A sorting air path A is provided from the main winnower to the suction fan, passing above the chaff sieve, and a sorting air path B is provided from the main winnower to the suction fan, passing between the chaf sieve and the stepped transfer body having a fine particle leakage net. Sorting out the wind force in wind path A Wind path B
The wind force is larger than the wind force of A sorting device for an ordinary type combine harvester, characterized in that said sorting air passage C and said sorting air passage B are configured to join above a fine particle leakage net.