JP2003180139A - Combined harvester - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a combined harvester capable of treating various states of grains and capable of effectively sorting the grains. <P>SOLUTION: This combined harvester is equipped with a swinging sorter having a grain sieve 26 so structured that the sieve is freely stretchable, wherein the rear end 26a of the grain sieve is made to approach an end of a grain flow plate when the sorter is normally operated and, on the contrary, the rear end 26a of the grain sieve is made to form a wide clearance apart from the end of the grain flow plate when the grains or the like are wet. <P>COPYRIGHT: (C)2003,JPO

Description

Detailed Description of the Invention

[0001]

TECHNICAL FIELD The present invention relates to a combine for continuously cutting and threshing grain culms, and more particularly,
The present invention relates to a combine characterized by an oscillating sorting section that is disposed below a handling cylinder and that sorts grains after threshing.

[0002]

2. Description of the Related Art Conventionally, as one form of combine, a mowing unit for mowing grain rods, a threshing unit for threshing the grain rods mowed by the mowing unit, and a rocking selection for swinging and sorting the grain threshed by the threshing unit. Some are equipped with a dynamic sorting section and a straw processing section for processing the straw discharged from the threshing section.

The rocking / sorting section has a rocking body provided with a feed pan, a chaff sheave, a Glensieve and a Straw rack at a position directly below the threshing section so that the rocking body can swing freely. The first grain receiving trough that receives the grain and the second grain receiving trough that receives the second grain are arranged with an interval in the front-rear direction, and the Karako is placed in front of the same grain receiving trough. , Karafu breeze is pressure-fed toward the upper surface of the chaff sheave, which is located at the upper rear of the Kara Minoh, and between the lower surface and the Glen Sieve, so that the grain and the straw debris are separated by wind.

[0004]

However, the conventional grain sieve has a constant length at all times, and there is a problem that efficient selection cannot be performed in a wet state of the grain such as during rainy weather. . Therefore, in the present invention, by improving the grain sieve at the time of selecting the first grain and the second grain, it is possible to cope with various states of the grain and to provide a combine capable of effective selection. And

[0005]

In order to solve the above problems, the present invention provides the following combine. That is, in a combine comprising an oscillating sorting unit that oscillates and sorts the grains that have been threshed by the threshing unit, and a lowering plate on which the sorted grains flow down, the oscillating sorting unit A Glensieve stretched in the front-rear direction is configured to be expandable and contractable so that the distance between the rear end of the Glensieeve and the end of the grain plate is variable. As a result, when the grain is wet, the grain sieve is shortened to prevent straw debris and the like from mixing into the grain side most.

The Glen sieve may be expanded and contracted by a panter system, and the opening shape of each panter portion may be changed with expansion and contraction.

It is also possible that the gren sheave is composed of a two-layer mesh, at least one of which moves in the front-rear direction, and the rear end of the gren sheave is movable.

[0008]

1 is an overall side view partially sectional view showing an embodiment of a combine according to the present invention, FIG. 2 is a plan view of the combine of FIG. 1, FIG. 3 is a front sectional view of the combine of FIG. 4 is a side view of the threshing section of the combine of FIG. 1, and FIG. 5 is a plan sectional view of the threshing section of FIG.

First, an embodiment of a combine according to the present invention will be described. As shown in FIG. 1, the combine (1) of the embodiment of the present invention is a crawler type traveling device (1
The threshing part (18) is mounted on a), and the mowing device (8) and the conveying device (9) are projected in front of the threshing part (18). The reaping device (8) accommodates the transverse feed auger (3) in the left-right direction in the platform (2), and rotationally drives it to collect the grain culms in a substantially central position. A cutting blade (4) is horizontally provided at the front end of the platform (2), and a take-up reel (5) is arranged in front of the cutting blade (4). The rear part of the lifting link (6) is pivotally supported on the rear parts of both sides of the platform (2), and the scraping reel (5) is rotatably supported at the front end of the lifting link (6), and the scraping reel is driven by a hydraulic motor or the like. (5) is rotationally driven. Further, a weed board (7) is arranged at both front ends of the platform (2).

A feeder house (10) communicates with the rear end of the platform (2) slightly to the left of the left and right center in accordance with the feed end position of the screw blade root of the transverse feed auger (3), and a conveyor is provided in the feeder house (10). (11)
And a front beater (11a) is provided at the rear end of the feeder house (10), and the rear end is at the threshing entrance (1
2), the rear part of the feeder house (10) and the front beater (11a) are supported by the machine body frame (13) so as to be vertically movable. Then, the lower surface of the feeder house (10) and the body frame (1) of the threshing unit (18).
A hydraulic cylinder (14) is interposed between the harvesting device and the harvesting device (3) so that the harvesting device (8) can be moved up and down. Above the feeder house (10) is the driver's seat (15) and the steering wheel (1
6) The cabin (17) accommodating the etc. is arranged, and the cabin (17) is arranged at the upper position in front of the left and right center of the aircraft to improve the visibility, and the cutting position can be easily confirmed to improve the maneuverability. ing.

As shown in FIGS. 4 and 5, the threshing section (18)
Is a plurality of saw drums (first rotor (21) and second rotor (22)) and a net (20), etc., and the first rotor (21) and the second rotor (22) are the outer circumference of the cylinder. It is configured as a screw type in which screw blades (21a) and (22a) are provided, the axes are oriented horizontally in the left-right direction, and are arranged in parallel in the front-rear direction. The diameter of the first rotor (21) is the second rotor (22). ) Is larger than the diameter. However, although two rotors are arranged in the present embodiment, three or more rotors may be arranged to increase the distance for the threshing process. And in this embodiment, the feeder house (10), the front beater (11a), and the threshing entrance (12) are provided in the left side toward the advancing direction of an airframe, and the threshing entrance (12) is the 1st rotor (21). ), The grain culm is conveyed to the right by the rotation of the first rotor (21). A partition plate (23) is provided between the first rotor (21) and the second rotor (22), and a rear plate (24) is provided in the rear part of the second rotor (22) in the left-right direction. A communication hole (23a) is opened on the right side of (23), and a discharge hole (24a) is opened on the left side of the rear plate (24).

In such a structure, when the cut culms are sent from the feeder house (10) to the threshing entrance (12), the cut culms are conveyed to the right by the rotation of the first rotor (21) and threshed. To be done. Then, when it reaches the right end of the first rotor (21), it is sent from the communication hole (23a) to the threshing space of the second rotor (22), and is granulated while being conveyed leftward by the rotation of the second rotor (22), When sent to the left end of the second rotor (22), the culms are dropped from the discharge holes (24a) onto the rear part of the sorting device (19) and discharged onto the field.

Then, as shown in FIG. 1, the threshing section (1
8) A sorting device (swing sorting device) (19) is arranged below, and the sorting device (19) has a width corresponding to the lengths of the first rotor (21) and the second rotor (22). Net (2
0) Well-known grain plate (25) and Glen sieve (2)
The sorting device (19) is composed of a swing sorting device such as 6) or the like, or a Karato (27) or the like. The first product is stored in the Glen tank (30) from the first conveyor (28) via the fried grain conveyor (29), and the second product is stored from the second conveyor (31) via the reduction conveyor (32). It is returned to the front of the sorting device (19).

The grain tank (30) is disposed above the threshing portion (18) and has a width substantially equal to or wider than the threshing portion (18), and the grain tank (30) is provided. Is formed in an inverted triangular shape in a side view, the lower portion of the Glen tank (30) is located at the rear portion of the second rotor (22), and the discharge conveyor (33) is placed in the lower portion of the Glen tank (30) in the left-right direction. One end of the discharge conveyor (33) is stored and projects from the side surface (the right side in this embodiment) of the Glen tank (30) to communicate with the base of the discharge auger (34). The discharge auger (34) is projected forward and upward and is rotatable up and down and left and right. The tip of the discharge auger (34) can be moved to any position, and the Glen tank (30)
The paddy inside can be discharged to the truck bed.

The sorting device (1) in the combine (1)
The construction of 9) is as described above, but the conventional grain sieve (26) is a mesh-like body fixedly installed in the sorting device (19), and the arrangement position thereof does not change. However, when the grains and straw waste after threshing are wind-sorted between the grains and straw waste by pumping Karafu wind, when the grains and straw waste are dry and when they are wet. Since the weight is different and the scattering distance is changed by the Karafu wind, there is a problem that the efficiency of selection is deteriorated in the conventional configuration in which the Glen sieve is arranged in the same size.

Therefore, in the present invention, the grain sieve is used as shown in FIG.
It is proposed that it be configured like a pantograph as shown in Fig. 1 and can be expanded and contracted with the same structure as a magic hand. In the panto-like configuration, the position of the rear end portion (26a) of the Glensieeve (26) extends rearward when stretched (a), and contracts toward the front when shortened (b). Then, regarding the distance A between the rear end portion (26a) of the Glen sieve (26) and the end portion of the lower grain board, when it is stretched (a), it is at substantially the same position in the front-rear direction, and conversely when shortened ( In b), there is a large gap with the end of the grain plate.

Here, in the present invention, the grain sheave (26) is stretched and stretched to the rear during normal work when the grain and straw debris are not wet. Conventionally, when wet grain or straw debris is supplied during rainy harvesting work, etc., the grain sieve (26) is used to prevent the loss of the third grain by reducing it as a second grain. There was a wide gap between it and the edge of the board. In the structure according to the present invention, the Glensieve (26) which could not be arranged sufficiently rearward
Can be extended to an appropriate position, so that the sorting performance can be improved.

On the other hand, when the grains and straw waste are moist and heavy, the third sheave (26) can be effectively prevented by shortening the grain sieve (26). Since the position of 26) can be determined, it can be stretched at a more optimal position than the conventional one. With the above configuration, the Glen Sieve (26) according to the present invention can improve the sorting performance during normal work, and at the same time, can reduce the third loss during wet work. Can be provided.

In the above pantoscopic configuration, the pantograph portion (26b) has a rhombic shape that is long in the front-rear direction during stretching (a), and the gap between meshes is reduced. growing. Therefore, in the normal operation, the gap is reduced to improve the sorting performance, and at the same time, in the wet operation, it is effective to promote the leakage, and the loss can be reduced. As described above, according to the present invention, the Glensieeve (26) is shaped like a panto, so that the Glensieve (26) can be freely stretched and adjusted according to the work environment and the crop.
In addition, the characteristics of the grain sheave (26) can be further changed by changing the mesh gap.

When the pantoscopic shape is used as described above,
The width in the left-right direction changes during stretching and shortening. Therefore, in this example, the cross-sectional shapes (c) and (d) of the fall prevention plates for preventing the fall of grains and straw debris according to the width during stretching are provided.
It is arranged as shown in. Here, the fall prevention plate (26c)
(26c) is arranged at the left and right ends of the Glensieve (26) with an inclination from above, and grains and straw debris falling from above flow down on the drop-out prevention plate and fall onto the panter section (26b). To do so.

According to the above construction, it is possible to prevent grains and straw debris from falling out of the gaps formed on the left and right sides of the grain sheave (26) even during stretching, and according to the shape of the fall prevention plate even when shortening, It is possible to adopt a configuration that does not interfere.

Further, in the present invention, the grain sieve (2
6) is composed of a two-layer net body, and one layer of the net body can be pulled out to the rear, whereby the Glensieve (26) can be expanded and contracted. FIG. 7 shows a side view of the Glensieve (26) during stretching (a) and during shortening (b).
The first layer (261) and the second layer (26
2) is arranged as shown in the figure, and the rear end portion (26a) of the Glensieeve (26) extends rearward, while at the time of shortening (b), the second layer (262) is changed to the first layer (261). It is stored below and contracts toward the front.

As described above, various mechanisms for expanding and contracting the Glensieve can be realized, and in particular, in the former pantoscopic shape, various structures can be considered. For example, by arranging vertical beams and diagonal beams alternately, it is possible to realize a gren sheave that does not cause fluctuations in width, and the gren sheave may be made of an elastic body. These configurations can be changed arbitrarily.

In the present combine (1), the return conveyor (32) and the discharge conveyor (33) can be constructed as follows. For explanation, the return conveyor (3
2) will be described below as an example. Second rotor (22)
The second conveyor (3
1) is installed horizontally, and the rear end of the reduction conveyor (32) is connected to the left end of the second conveyor (31). The reduction conveyor (32) is provided with a vertical conveyor (65) extending obliquely upward in the traveling direction on the side of the machine body, and a projecting structure from the upper end of the vertical conveyor (65) toward the inside of the machine body. The vertical conveyor (65) is composed of a feeding device (66), the lower end of which is communicated with the end of the second conveyor (31) to fried the second food.
The feeding device (66) is designed to convey the material toward the inside of the machine.

Second conveyor (31), vertical conveyor (6
5), as shown in FIG. 8, the feeding device (66) is provided with a spiral screw (31b) (65b) (66) on the outer peripheral surface of the conveyor shaft (31a) (65a) (66a).
b) is fixed, and it is composed of a screw type conveyor housed in the outer cylinders (31c) (65c) (66c) so that it can stably and reliably convey the second item including straw waste. There is.

In this embodiment, as shown in FIG. 9, the conveyor shaft (65a) is hollow, for example, and a large number of small holes (65d) are provided on the outer peripheral surface. According to this configuration, it is possible to remove dust from the small hole (65d) by performing suction using the fan (65e) from the end of the conveyor shaft (65a), and carry it by the vertical conveyor (65). However, since it can remove excess dust, it improves sorting performance and contributes to higher functionality. Here, the small hole (65d) has a diameter sufficiently smaller than the grain to prevent the grain from being sucked.

Further, in this configuration, the fan (65e) is used to blow air from the end of the conveyor shaft (65a),
Removal of clogging of small holes (65d) and vertical conveyor (6
5) The inside can be cleaned. Although the small holes (65d) may be clogged when suction is performed with the above configuration, the clogging is eliminated by blowing air in reverse. At the same time, the remaining rice can be cleaned and the inside of the outer cylinder (65c) can be kept clean, and cleaning at the time of changing the type becomes easy.

As described above, the suction / air blowing mechanism can be similarly arranged in any of the second conveyor (31), the vertical conveyor (65) and the feeding device (66). Further, a suction / blowing mechanism can be provided in each conveyor connected to the discharge conveyor (33) with the same configuration.

Further, the grain tank (30) of the combine (1) may be provided with the following discharging mechanism. Here, any of the following discharge mechanisms can be realized in the shape of the Glen tank (30) shown in FIG.
For ease of explanation, a Glen tank having a different shape will be described below. For example, the Glen tank is shown in side view in FIG.
In the case of the Glen tank (300) having the shape as shown in FIG.
0a) had residual grains and the like. In particular, wet grains and the like are likely to remain in the tank, and the conventional Glen tank has a problem that it takes time and labor to discharge.

Therefore, in this embodiment, the tank corner (300
A plurality of nozzles (302) for the compressed air from the compressor (301) are provided in (a), and the compressed air is blown to and removed from the convection portion in the Glen tank (300). As a result, the discharge auger (34) can be continuously discharged, and the discharge time can be shortened. In addition, it is possible to save the labor such as entering the tank and removing it as in the conventional case, and contribute to the improvement of working efficiency.

The nozzle (302) can be appropriately disposed not only in the corner of the tank but also in a portion such as the pressure plate inheritance portion where bridge retention is likely to occur. It can be performed at any timing, such as in conjunction with the load. In particular,
The structure linked with the auger load can realize continuous discharge automatically, which is particularly convenient. Alternatively, a monitor may be provided in the Glen tank (300) so as to appropriately eject the gas while observing the image.

As a method of achieving the same effect, the construction of the Glen tanks (310) (320) shown in FIGS. 11 and 12 may be adopted. First, in the Glen tank (310), as in the above case, grains and the like are likely to remain in the tank corner (310a). Therefore, a continuous moving body (311) such as a belt conveyor is provided, and the accumulated matter is moved toward the discharge conveyor (33). As a result, it is possible to suppress the accumulated matter in the tank corner portion (310a) and realize continuous discharge.

In the configuration of FIG. 12, the discharge conveyor (33) is arranged at the end of the Glen tank (320), and the continuous moving body (321) such as a belt conveyor is laid at the bottom of the tank, so that The grains in the tank (320) can be efficiently moved toward the discharge conveyor (33).

As described above, in this combine (1), since the discharge mechanism is provided in the Glen tank, the discharge can be continuously performed, so that not only the working efficiency is improved but also the tank bottom is not inclined. Since it can be discharged without staying, the capacity of the Glen tank can be increased. Further, since the shape of the Glen tank is less restricted, the degree of freedom in tank layout is increased, and it is possible to provide a combine that is not restricted by the conveyor position with respect to the tank.

[0035]

Since the combine according to the present invention has the above-mentioned structure, it has the following effects. According to the combine harvester according to claims 1 to 3, since the grain sieve can be expanded and contracted during the normal work and the wet work, the sorting performance is improved during the normal work, while the third loss is suppressed during the wet work. Is possible and contributes to higher efficiency. Further, the grain sieve according to claim 2 can be easily expanded and contracted by forming it into a panto shape, and since the shape of the opening of the panto part changes, the selection characteristics of grains and the like are changed, which is more preferable. It becomes possible to sort. That is, the sorting performance can be improved during normal work, and the leakage can be effectively promoted during wet work.

[Brief description of drawings]

FIG. 1 is an overall side view and partial sectional view showing an embodiment of a combine according to the present invention.

FIG. 2 is a plan view of the same.

FIG. 3 is a front sectional view of the same.

FIG. 4 is a side view of the threshing unit.

FIG. 5 is a plan sectional view of the same.

FIG. 6 is an explanatory diagram of a configuration example 1 of the Glensieve according to the present invention.

FIG. 7 is an explanatory diagram of a configuration example 2 of the Glensieve according to the present invention.

FIG. 8 is a structural diagram of a vertical conveyor among the return conveyors.

FIG. 9 is an explanatory view of the arrangement of small holes.

FIG. 10 is a side sectional view of the Glen tank (No. 1)

FIG. 11 (Part 2)

FIG. 12: (3)

[Explanation of symbols]

26 Glensive 26a same, rear end 26b Panta section 26c Fall-out prevention plate

   ─────────────────────────────────────────────────── ─── Continued front page    F term (reference) 2B095 AA01 AA08 AA13 AA28 BA11                       BA13 BA15 BA25 BB08 BB16                       BB24 BB25 CA02 EA05 GA08

Claims (3)

[Claims] 1. A combine harvester comprising: an oscillating sorting unit for oscillating sorting of grains slaughtered by a threshing unit; and a shedding plate under which the sorted grains flow down. A combine characterized in that a grensieve stretched in the front-rear direction is stretchably arranged on the rocking sorting part, and a distance between a rear end part of the grensieve and an end part of the grain table is variable. 2. The combine harvester according to claim 1, wherein the Glensieve is configured to expand and contract by a panter system, and an opening shape of each panter portion changes with expansion and contraction. 3. The combine according to claim 1, wherein the gren sieve is composed of a two-layer net body, at least one layer of which moves in the front-rear direction, and the rear end of the gren sheave is movable.