JP4051959B2 - Threshing device - Google Patents

Description

[0001]
BACKGROUND OF THE INVENTION
The present invention relates to a threshing device mounted on a combine or the like.
[0002]
[Prior art]
The conventional technology will be described by taking as an example an agricultural combine threshing apparatus using a crawler as a traveling means. The combine increases the ground contact area of the infinite crawlers that make up the crawler, allowing it to run freely even in soft fields such as paddy fields, enabling agricultural work such as mowing.
[0003]
The combine is equipped with an engine as a power source, and the power generated by the engine is used for traveling, harvesting, threshing, and the like of the combine. The crawler is driven by shifting the power of the engine with a traveling transmission. The traveling transmission is composed of a hydrostatic continuously variable transmission, a gear train mechanical transmission means, a differential gear device, a clutch means, a brake means, etc., and when traveling straight, a pair of left and right crawlers are driven at a constant speed. When turning the combine left and right, it is driven by giving a speed difference between the left and right crawlers, and the crawler on the high speed side is on the outside and the crawler on the low speed side, stop side or reverse side is inside. Yes.
[0004]
In addition, the driving force of the engine is used to drive the barrels, swing racks, and hulling spirals in the threshing device. It is arranged.
[0005]
[Problems to be solved by the invention]
In the case where grain and straw are sorted by air blown by the red pepper disposed in the threshing device, the sorting air volume set for the red pepper is insufficient even if the sorting ability is increased. In order to increase the maximum air volume set for Tang Dynasty, it is necessary to increase the diameter of the Tang Dynasty fan. However, increasing this will increase the size of the combine aircraft, and there is a high demand for miniaturization. Will go backwards. Further, even if the rotation speed of the Kara fan is increased, the sorting efficiency does not increase, but rather cavitation occurs and noise increases.
[0006]
Accordingly, an object of the present invention is to provide a threshing device such as a combine that has an increased ability to sort air from grain and straw without increasing the diameter of the fan of the red pepper.
[0007]
[Means for Solving the Problems]
The above-described problem of the present invention is solved by the following configuration. The invention according to claim 1 is obtained by processing a handling chamber (66) provided with a handling cylinder (69) for separating the kernel from the kernel and the kernel that has passed through the handling chamber (66). A second processing chamber (67) having a second processing cylinder (70) for processing a second object in the object to be processed, and the handling chamber (66) provided in the vicinity of the second processing chamber (67). A dust disposal chamber (68) provided with a dust disposal cylinder (71) for mainly treating waste in a workpiece obtained by processing the cereals that have passed through the container, and the handling chamber (66), Swinging shelf (51) for sieving the processing object falling from the numbering processing chamber (67) and dust removal processing chamber (68), 79) in the threshing device provided with the dust removal cylinder (71) and the second processing cylinder (70) are few outside the tang (79). Also an auxiliary fan (97) for blowing air into the winnowing fan (79) on the opposite side is provided, further provided the auxiliary fan (97) independently of the drive is capable of driving means (98, 100), the auxiliary fan (97) Of these, only the auxiliary fan (97) on the opposite side to the arrangement portion of the dust removal cylinder (71) and the second treatment cylinder (70) is driven, and the dust removal cylinder (71) and the second treatment cylinder (70) are driven . This is a threshing device that increases the air volume of the auxiliary fan (97) on the side opposite to the arrangement section from the air volume of the auxiliary fan (97) on the arrangement section side of the dust removal cylinder (71) and the second processing cylinder (70). .
[0008]
According to the invention of claim 1, wherein the present invention, since there is provided an auxiliary fan 97 for blowing air toward the winnowing fan 79 from outside the winnowing fan 79, without changing the size of the aircraft, Ru can be increased compared with the prior art winnowing fan air volume . Further, conventionally, there is a tendency that the distribution of the grains tends to be on the rocking shelf 51 on the side where the dust removal cylinder 71 and the second cylinder 70 are located on the front side in the rotation direction of the handling cylinder 69. Therefore, according to the first aspect of the present invention, in order to increase the amount of the selected air flow to the side portion where more grains are more likely to accumulate than at the opposite side, at least the dust removal processing cylinder 71 and the second processing cylinder 70, Is provided with an auxiliary fan 97 that blows air into the tang 79, and the air volume of the auxiliary fan 97 is made larger than the air volume of the auxiliary fan 97 on the arrangement portion side of the dust removal treatment cylinder 71, so More air can be sent to the swing shelf 51 on the side where the air is accumulated .
[0009]
According to the second aspect of the present invention, the rotating shaft 97b of the auxiliary fan 97 is provided coaxially with the rotating shaft 79b of the red fan 79a, and the hot air volume is increased and the number of parts is increased without changing the size of the fuselage. You do n’t have to.
[0010]
The invention described in claim 3 is provided with the manual operation means 100 for manually turning on / off the rotational drive of the auxiliary fan 97, and the auxiliary fan 97 can be easily started and stopped manually.
[0011]
The invention according to claim 4 is the load detecting means 105-107 for detecting the size of the threshing processing load in the threshing device 15, and the auxiliary fan 97 according to the size of the threshing processing load of the load detecting means 105-107. The control device 104 that controls the driving of the auxiliary fan 97 can be automated.
[0015]
【The invention's effect】
According to the invention of claim 1, wherein the present invention, without increasing much the size and number of parts of the body, raising conventionally a winnowing fan air volume, can increase the grain blowing sorting capabilities, that a good workability. Furthermore, according to the first aspect of the present invention, from the outside of the Kara 79 to the Kara wind tunnel on the opposite side of the dust removal cylinder 71 and the swinging rack 51 on the No. 2 process cylinder 70 side where more grains are likely to accumulate. By making the air volume of the auxiliary fan 97 to be blown larger than the air volume of the auxiliary fan 97 on the arrangement portion side of the dust removal processing cylinder 71, a large amount of air is sent to the swing shelf 51 on the side where a large amount of objects to be processed is accumulated. Can be improved, and the air blowing sorting ability is increased .
[0016]
According to the second aspect of the present invention, the rotary shaft 97b of the auxiliary fan 97 is provided coaxially with the rotary shaft 79b of the hot fan 79a, so that the hot air volume can be increased without increasing the number of parts.
[0017]
According to the third aspect of the present invention, since the manual operation means 100 for manually turning on / off the rotational drive of the auxiliary fan 97 is provided, the start / stop can be performed as desired by the operator.
[0018]
According to the fourth aspect of the present invention, the drive control of the auxiliary fan 97 can be automated by the load detection means 105 to 107.
[0021]
DETAILED DESCRIPTION OF THE INVENTION
Embodiments of the present invention will be described with reference to the drawings.
FIG. 1 is a left side view of a combine that performs a grain harvesting operation according to an embodiment of the present invention, FIG. 2 is a front elevation view of the combine, and FIG. 3 is a plan view of the combine.
[0022]
At the bottom of the traveling frame 2 of the combine 1 shown in FIG. 1 to FIG. 3, there is a pair of left and right crawlers 4 made of a flexible material such as rubber and formed into an endless belt shape. The crawler 4 is provided with a traveling device 3 configured to be able to travel freely by sinking slightly, a cutting device 6 is mounted on the front portion of the traveling frame 2, and an engine 28 (FIG. 7) and threshing are disposed on the upper portion of the traveling frame 2. The device 15, the cockpit 20 and the Glen tank 30 are mounted.
[0023]
The reaping device 6 is configured such that the entire reaping device 6 can be lifted and lowered by a telescopic action of a reaping lifting cylinder (not shown), and cereals vegetated on the farm can be harvested at a predetermined height. The weeding tool 7 is disposed at the lower part of the front end of the reaping device 6, the cereal raising device 8 having an inclined shape behind it, and a cutting blade (not shown) at the rear bottom thereof. Between the cutting blade and the starting end of the feed chain 14 of the threshing device 15, the front conveying device, the handling depth adjusting device, the supply conveying device, etc. (not shown) can be successively transferred and adjusted for the cereals. Are arranged as follows.
[0024]
The operation of the harvesting device 6 of the combine 1 is performed as follows. First, the engine 28 is started and the operation levers for shifting, steering, etc. are operated so that the combine 1 moves forward, and a mowing / threshing clutch (not shown) is inserted and operated to transmit the rotating parts of the aircraft. However, when the traveling frame 2 travels forward, cutting and threshing operations are started. The cereals to be planted in the field are subject to weeding by the weeding tool 7 at the lower front end of the reaping device 6, and then the culm is raised and the device 8 is raised to bring it upright if it is lying down. The cereal stock reaches the cutting blade and is cut, and is scraped into the front transport device and transported backwards. Be transported.
[0025]
The cereal is inherited from the supply and transport device to the start end of the feed chain 14 and supplied to the threshing device 15. The threshing device 15 has a handling chamber 66 with a handling cylinder 69 pivoted on the upper side, and a sorting unit 50 is provided integrally on the lower side of the handling chamber 66 to thresh and sort the supplied harvested cereal meal.
[0026]
As will be described in detail later, the cereal mash supplied to the threshing device 15 is inserted into a handling chamber 66 which is a main threshing portion, and a plurality of teeth 69a of a handling drum 69 which is pivoted on the handling chamber 66 and rotated. The threshing is carried out by the transfer by the feed chain 14 and the interaction with the handling net 74, and the object to be processed (grains and wastes) is received by the swing shelf 51 of the sorting unit in the threshing device 15, While moving on the oscillating swinging shelf 51, the wind is selected by receiving air from the tang 79, and the grain having a high specific gravity passes through the sheave 53 and the selecting net 63, and from the first spiral 65 to the conveying spiral ( It is conveyed to the grain tank 30 through the first cereal cylinder 16 (see FIG. 1) having a built-in (not shown), and temporarily stored in the grain tank 30. As shown in FIG. 1, a straw discharge port 311 a of the tank body 31 a and a straw discharge port 311 b of the auxiliary tank 31 b are provided on the longitudinal axis of the first cereal cylinder 16.
[0027]
The remaining threshed culm that has reached the end of the handling chamber 66 of the threshing device 15 and is kept in a long length is sandwiched and transported between a culling chain and a culling head chain (not shown), and the rear part of the threshing device 15 Are put into cutting cutters 92 and 93 (FIG. 5), cut and released to the field.
[0028]
A grain tank helix (not shown) for transferring grains is provided at the bottom of the glen tank 30, and a discharge auger comprising a vertical auger 18 and a horizontal auger 19 is provided on a helical drive shaft (not shown) for driving the glen tank helix. The grains that are connected and stored in the Glen tank 30 are discharged to the outside of the combine 1 from the discharge auger discharge port. The Glen tank spiral, vertical auger spiral (not shown), and horizontal auger spiral (not shown) are rotationally driven in response to the power of the engine 28, and convey the stored grains by the screw conveyor action of each spiral blade. To do.
[0029]
4 is a partially cutaway side cross-sectional view of the combine threshing device 15, FIG. 5 is a plan cross-sectional view of the threshing device 15 as viewed from the line BB in FIG. 4, and FIG. It is elevation surface sectional drawing of the threshing apparatus 15 of C line arrow.
[0030]
The corn straw harvested by the reaping device 6 is adjusted in the handling depth by the corn straw transporting and adjusting device attached to the reaping device 6, and from the entrance 66 a (FIG. 6) of the handling chamber 66 which is the main threshing portion of the threshing device 15. It is inserted into the handling chamber 66. A handling drum 69 pivoted in the handling chamber 66 has a large number of teeth 69a provided on the surface thereof, and power from the engine 28 is transmitted through a mowing / threshing clutch by a drive mechanism (not shown). Or it rotates in the direction of arrow B in FIG. The cereal with the grain inserted into the handling chamber 66 is sandwiched between the feed chain 14 that moves along the rail guide 14c and the feed chain nip 14a that is biased by the spring 14b. While being transferred in the direction of arrow A in FIG. 5, threshing occurs due to the interaction between the teeth 69a of the handle 69 rotating in the direction of arrow B and the handle net 74. The object to be processed (grains and sawdust) separated from the cereals passes through the handling net 74 in the direction of arrow C1 (FIG. 6) and is received by the swing shelf 51.
[0031]
Since the swing shelf 51 swings up and down and back and forth by the operation of a swing shelf drive mechanism (not shown), the object to be processed receives air from the Karatsu 79 while moving in the direction of arrow D (FIG. 4). The grain having a high specific gravity passes through the sheave 53 and the sorting net 63 in the direction of arrow E, and is accumulated on the first shelf 64, and then passes through the first helix 65 to the first cereal cylinder 16 (FIG. 1). It is conveyed to 30. The grains stored in the Glen tank 30 are conveyed to the outside of the combine 1 via the augers 18 and 19.
[0032]
Among the objects to be processed on the swing shelf 51, the lighter ones are blown off by the swing action of the swing shelf 51 and the air blown by the fan 79 a of the Karatsu 79 and move on the sheave 53 in the direction of arrow D, The second small grain on the rack 62 falls in the direction of the arrow G, is collected on the second shelf 85, and is conveyed to the second lifting cylinder 87 by the second spiral 86 (FIG. 4).
[0033]
The second kernel is a mixture of normal kernels, branch stems, crumbs and scorpion grains in which normal grains are stabbed in the crumbs. It is pumped up in the direction of arrow H (see FIGS. 4 and 6) by an uplifted helix helix (not shown) and discharged upward from the second processing chamber 67 through the second processing chamber 67. The second processing cylinder 70 pivoted on the lower portion of the second processing chamber 67 is rotated in the direction of arrow J in FIG. 6 by a driving device (not shown). The second kernel is separated from the second kernel and the branch of the branch stem while traveling in the direction of arrow I while colliding with a number of treatment teeth 70a (FIG. 4) planted in the second treatment barrel 70. A part of the processed material passes through the second processing cylinder receiving net 75 in the direction of the arrow C2 (FIG. 4) and falls to the swing shelf 51, and most processed materials are processed in the second processing chamber. It is sent from the end of 67 to the air blown by the second processing cylinder air blowing blade 70b and falls onto the swing shelf 51 in the direction of arrow C3 (FIG. 4) to join the object to be processed from the handling chamber 66. A spiral may be provided in the second processing cylinder 70 instead of the processing teeth 70a.
[0034]
Among the objects to be processed that have reached the end of the object to be processed conveyance direction of the handling chamber 66, short objects such as scraps are thrown into the direction of arrow A2 (FIG. 5) from the dust removing chamber inlet 68a and are subjected to dust disposal. It enters the chamber 68 and is processed in the dust removal processing chamber 68 while being conveyed in the direction of arrow K (FIG. 5) by the spiral 71a of the rotating dust removal processing cylinder 71.
[0035]
Leakage in the processing object mainly composed of sawdust including a small amount of grains that has entered the dust disposal chamber 68 is transferred from the receiving net 76 (FIG. 6) to the second processing cylinder 70 of the second processing chamber 67. The second processing cylinder 70 is rotated by the rotation of the second processing cylinder 70 and is conveyed by the processing teeth 70a provided on the rear side of the second processing cylinder 70 and is processed while being conveyed to the front side of the second processing cylinder 70. It passes through the receiving net 75 provided below the processing cylinder 70 in the direction of the arrow C3 and is sent onto the transfer shelf 51a of the swing shelf 51.
[0036]
A configuration may be adopted in which the leakage from the dust removal processing chamber 68 is collected not in the second processing chamber 67 but in the entire swing shelf 51.
[0037]
In the threshing device 15, the workpiece leaked from the dust processing chamber 68 to the second processing chamber 67 is transported to the front of the second processing chamber 67 by the second processing cylinder 70 and is processed into a single grain. According to this configuration, branch infarct grains and cut grains including single grains leaked from the dust removal processing chamber 68 are directly made into single grains by the second processing cylinder 70, and are swung from the receiving net 75 in front of the second processing chamber 67. It is sent to 51 and there exists an effect that a grain can be collected efficiently.
[0038]
Moreover, as shown in FIG. 5, the crossflow fan 91 is provided in the rear part of the threshing apparatus 15, and among the dust discharged | emitted in the threshing apparatus 15 containing the dust removal process chamber 68, the waste and dust with light specific gravity are included. Air is sucked by blowing air by rotation of the cross flow fan impeller 91a, blown out in the direction of arrow L from the cross flow fan outlet 91b (FIG. 4), and discharged to the outside of the combine 1.
[0039]
Of the dust that has fallen as indicated by the arrow M (FIG. 4) from the chamber where the cross-flow fan 91 is located to the end of the swing shelf 51, a slightly longer waste is received by the strola rack 62, and the swing shelf 51 is swung. It is discharged from the end portion of the swing shelf 51 as shown by the arrow F by the dynamic motion and the air blowing force of the Kara 79 and discharged to the field. Further, among the dust particles, those having a small diameter and heavy specific gravity, such as the second grain and the third grain, pass through the Strollac 62 or the sheave 53 at the end of the swing shelf 51 in the direction of the arrow G, and the second shelf board. It falls to 85 and processed in the second processing chamber 67 again.
[0040]
The threshing cereals (cocoons) that have been threshed in the material to be processed that have traveled in the direction of arrow A in FIG. 5 and have reached the end of the handling chamber 66 are shown in FIG. It is transported in the A1 direction and put into the waste disposal chamber 95. In the waste disposal chamber 95, the cuttings finely cut by the cutting cutters 92, 93 are dropped and released to the field. Further, the cocoon can be dropped naturally without being cut by the cutter 92. The scissors cutters 92 and 93 are rotationally driven at rotational speeds controlled by drive actuators M3 and M4, respectively.
[0041]
As shown in the combine plan view of the area where the tang 79 is installed in FIG. 7 and the combine front view of the tang 79 portion of FIG. 8, the fan 79 a of the tang 79 has a tang fan 79 a over the entire width of the threshing device 15. However, in order to increase the ability to select grain and straw, the air volume of the Kara fan 79a must be increased. Therefore, if the diameter of the fan 79a is increased, the body becomes larger, and even if the rotational speed of the fan 79a is increased, the efficiency is poor, and cavitation occurs, resulting in increased noise.
[0042]
Therefore, in the present embodiment, the turbo fan 97 for blowing air toward the tang 79 is provided outside the machine frame of the threshing device 15, and the tang air volume can be increased more than before without changing the size of the machine. As shown in FIGS. 7 and 8, the power of the engine 28 disposed below the cockpit 20 is transmitted to the tang fan 79a and the dowel fan 97 via the pulley 28a, the belt 103 and the pulley 79c. Since the shaft 79b is extended to serve as the rotating shaft of the dowel fan 97, there is an advantage that the number of parts does not increase greatly.
[0043]
Further, as shown in FIG. 9, a turbo fan 97 for blowing air toward the red pepper 79 is provided outside the machine frame on the opposite side of the threshing device 15 having the dust removal treatment cylinder 71 and the second treatment cylinder 70. It may be configured.
[0044]
This tends to be due to the distribution 51a of the grain on the swing shelf 51 on the side where the dust removal cylinder 71 and the second cylinder 70 are located due to the rotation of the barrel 69 in the direction of arrow B. Therefore, in order to increase the amount of air sent to the side portion where more grains are likely to accumulate than the opposite side, air is blown from the outside of the machine toward the Karatsu wind tunnel on the opposite side of the dust removal treatment cylinder 71 and the second treatment cylinder 70. It is desirable to provide only the turbo fan 97.
[0045]
When a single turbo fan 97 is provided as shown in the front view of the Karatsu 79 portion of FIG. 9, the air blown from the turbo fan flows in the direction of the arrow X as shown in the plan views of the Karatsu 79 portion of FIGS. A large amount of wind can be sent by the swing shelf 51 on the side where a large amount of workpieces are accumulated.
[0046]
Further, when the clutch 98 capable of “turning on” and “turning off” the turbo fan 97 is provided, the air blown only by the red fan 79a (arrow Y in FIG. 10), the air blown by the red fan 79a and the turbo fan 97 (in FIG. 10). The amount of blown air can be made variable when the arrow X) is added. In this way, the air flow rate can be changed according to the conditions of the crop, and the condition adaptability is improved.
[0047]
Conventionally, the rotation speed of the tang fan 79a is changed to adjust the tang fan air flow rate, so that the tang fan wind tunnel vibrates when the tang fan fan volume increases, but in this embodiment, the rotation speed of the tang fan fan 79a is not increased. Even in this case, it is possible to adjust the air flow rate over a wide range by turning the turbo fan 97 on and off. Further, since the turbo fan 97 forcibly blows air into the Tanggu wind tunnel, it is possible to easily increase the amount of Tang air blowing without driving the Tanggu wind tunnel. Note that the clutch 98 in FIG. 7 can be activated when the manual switch 100 is turned on.
[0048]
When a pair of turbofans 97 are provided outside the two sides of the Kara 79, “On” and “Off” can be driven independently, so that (1) the fan only with the Kara fan 79a, (2) It is possible to switch between three levels of air flow with the tang fan 79a + one turbo fan 97, (3) air with the tang fan 79a + two turbo fans 97, and the adaptability of the tang wind according to crop conditions is improved.
[0049]
As shown in the partial side view of the combine of FIG. 11 and the front view of the tang portion of FIG. 12, a shutter 101 is provided at the tang suction port 99 portion between the tang fan 79 a and the turbo fan 97, and the shutter 101 is opened. Depending on the degree, it is possible to adjust the selection of tangs. When the shutter 101 is fully closed, the air blown by the red fan 79a is reduced, and when the shutter 101 is fully opened, the air blown by the hot fan 79a and the air blown by the turbo fan 97 can be used. Compared with the configuration in which the shutter 101 is provided outside the turbo fan 97, the adjustment range of the Kara sorting air volume by opening and closing the shutter 101 becomes larger.
[0050]
As shown in the front view of the tang portion in FIG. 13, on the tang shaft 79b, an input pulley 79c for transmitting driving force from the tang portion fan 79a, the turbo fan 97 and the engine 28 to the tang portion fan 79a, and a sorting drive output pulley from the tang portion 79. 79d, an input pulley 79c and a sorting drive output pulley 79d are arranged outside the red fan 79a on the red shaft 79b, and a turbo fan 97 is arranged outside the input pulley 79c. The pulley 79d is positioned in the vicinity of the bearing 79e of the rod shaft 79b supported by the body frame 102 of the threshing device 15, the amount of overhang from the bearing 79e is reduced, the body strength is increased, and the selection transmission system The drive system of the turbo fan 97 can be placed close to the fuselage frame 102 on which the belts are laid out. You can configure devices 15. Further, by disposing the turbo fan 97 outside the input pulley 79c and the sorting drive output pulley 79d, the turbo fan 97 can suck the atmosphere without the obstacle of the pulley 79c and the sorting drive output pulley 79d, and the blowing efficiency is improved. In addition, the maintenance is facilitated by disposing the rod shaft 79b outside the pulley 79c.
[0051]
In the control device of the darbo fan 97 of the present embodiment shown in FIG. 14, the detected values of the flow rate detection sensors 105, 106, 107 of the grain flow rate, the straw flow rate, and the second reduced kernel provided in the threshing device 15, When the clutch 98 of the turbofan 97 is configured to be “ON” and “OFF”, when the grain processing amount of the threshing device 15 increases, the turbofan 97 is turned on to increase the amount of tangy wind, and the grain processing amount is small. It reduces the amount of air blown by tang and can supply the amount of tang bream that matches the grain processing conditions of the threshing device, improving the air blowing sorting ability compared to the conventional method. The arrangement positions of the sensors 105 to 107 are shown in the combine schematic side sectional view of FIG.
[0052]
In conjunction with the combined vehicle speed range, (1) Kara fan 79a only, (2) Kara fan 79a + first turbo fan 97, (3) Kara fan 79a + first turbo fan 97 + second turbo fan 97 It may be configured to be switchable to three types of driving states. In this case, when the vehicle speed is increased or decreased by the detection value of the vehicle speed sensor 109, the processing amount of the threshing device 15 increases or decreases. In this way, it is possible to perform highly accurate sorting by changing the amount of air blown in steps with the change in vehicle speed.
[0053]
When the harvesting device 6 is in the raised position and when the combine is turning in the corner of the field, there is less work to be processed in the threshing device 15, and if the amount of tang wind is not reduced, soot spreads outside the machine body. As shown in the flow chart, when the combine turns the field corner, the clutch 98 of the turbo fan 97 is set to “disengaged”. Alternatively, when the mowing device 6 is in the raised position, the clutch 98 of the turbo fan 97 is set to “disengaged”. Further, the turbo fan clutch 98 is set to “ON” so that the air can be blown by the turbo fan 97, and for example, the threshing loss at the time of turning the field corner can be reduced.
[0054]
As shown in the front view of the tang portion of the threshing device 15 shown in FIG. 17 and the side view of FIG. 18, a turbo fan 97 for blowing air toward the tang portion wind tunnel is provided outside the tang portion fan 79a, which is the rotational axis of the tang portion fan 79a. The engine 28 is driven with the hollow shaft 79b as a hollow shaft, and a rotating shaft 97b of a turbofan is provided in the hollow shaft. The rotational speed of the tang fan 79a is constant, but the rotational speed of the turbo fan 97 may be variable. At this time, by making the rotational speed of the turbo fan 97 variable, it is possible to make the air volume of the selected wind by the tang fan 79 a variable, and further, by changing the rotational speed by the turbo fan 97, it is possible to expand the air volume change region. As a mechanism for changing the rotational speed of the turbo fan 97, for example, a belt-type continuously variable transmission 113 supported by the airframe is used to drive a pulley 97c on a rotating shaft 97b of the turbo fan 97. The variable mechanism for the rotational speed of the turbo fan 97 is not limited to the belt type continuously variable transmission 113, and a variable motor or the like may be used.
[0055]
FIG. 19 shows that the relationship between the rotational speed of the tang fan 79a and the turbo fan 97 and the air volume of the selected air is variable, but the variable range of the selected air flow can be made larger than in the past.
[0056]
A transmission pulley for the continuously variable transmission 113 is positioned in the vicinity of the bearing supported by the machine frame of the threshing device 15 by the continuously variable transmission 113, and an overhang from the machine frame / bearing 79 e to the continuously variable transmission 113. The amount is reduced and the machine frame strength is improved. Further, by disposing the turbo fan 97 outside the continuously variable transmission 113, the turbo fan 97 can suck the atmosphere without obstruction of the pulley 79d, and the blowing efficiency is improved.
[0057]
The belt type continuously variable transmission 113 can continuously change the size of one rotation of the endless belt by continuously changing the distance between the pair of pulleys 97c by a motor, and the actuator (motor) 114 for the endless belt can be continuously changed. The magnitude of one revolution of 115 can be adjusted.
[Brief description of the drawings]
FIG. 1 is a diagram showing a left side surface of a combine that performs a grain harvesting operation according to an embodiment of the present invention.
FIG. 2 is a front elevation view of the combine of FIG. 1;
FIG. 3 is a plan view of the combine of FIG. 1;
4 is a side cross-sectional view of the combine threshing device of FIG. 1; FIG.
5 is a diagram showing a cross-sectional plan view of a combine threshing device as viewed in the direction of arrows BB in FIG. 4; FIG.
6 is a diagram showing an elevational cross section of the combine threshing device as viewed in the direction of arrows CC in FIG. 4; FIG.
FIG. 7 is a combine plan view of an area in which a red pepper of the threshing apparatus of FIG. 4 is installed.
8 is a combine front view of the tang portion of the threshing apparatus of FIG. 4. FIG.
FIG. 9 is a front view of a red pepper portion of the threshing apparatus of FIG. 4;
FIG. 10 is a plan view of a red pepper portion of the threshing apparatus of FIG.
FIG. 11 is a partial side view of the combine of FIG. 1;
12 is a front view of a red pepper portion of the threshing apparatus of FIG. 4. FIG.
FIG. 13 is a front view of a tang portion of the threshing apparatus of FIG.
FIG. 14 is a configuration diagram of a control device for the combine darbo fan of FIG. 1;
FIG. 15 is a schematic sectional side view of the combine of FIG. 1;
FIG. 16 is a drive control flow diagram of the turbofan when the combine of FIG. 1 turns the field corner.
FIG. 17 is a front view of a red pepper portion of the threshing apparatus of FIG. 4;
FIG. 18 is a side view of the threshing apparatus of FIG.
FIG. 19 is a diagram for explaining the relationship between the rotational speed of the tang fan and the turbo fan of the threshing apparatus of FIG. 4 and the air volume of the sorting air.
[Explanation of symbols]
DESCRIPTION OF SYMBOLS 1 Combine 2 Traveling frame 3 Traveling device 4 Crawler 6 Mowing device 7 Weeding tool 8 Grain raising device 14 Feed chain 14a Feed chain pinching 14b Spring 14c Rail guide 15 Threshing device 16 First cereal cylinder 18 Vertical auger 19 Horizontal auger 20 Pilot seat 28 Engine 28a Pulley 30 Glen tank 31a Tank main body 31b Auxiliary tank 50 Sorting part 51 Oscillating shelf 51a Transfer shelf 53 Sheave 62 Strolac 63 Sorting net 64 First shelf board 65 First spiral 66 Handling chamber 66a Inlet 67 No. 2 processing chamber 68 Dust processing chamber 68a Dust processing chamber inlet 69 Handling cylinder 69a Teeth 70 No. 2 processing cylinder 70a Processing teeth 70b No. 2 processing cylinder blower blade 71 Dust disposal cylinder 71a Spiral 74 Handling net 75 No. 2 Processing cylinder receiving net 76 Receiving net 79 Kara 79a Kara fan 79b Rotating shaft 7 c, 97c Pulley 79d Sorting drive output pulley 79e Bearing 85 Second shelf plate 86 Second spiral 87 Second lifting cylinder 91 Cross flow fan 91a Cross flow fan impeller 91b Cross flow fan outlet 92, 93 Cutter 95 Sputtering Processing chamber 97 Auxiliary fan 97b Rotating shaft 98 Clutch 99 Karatsu suction port 100 Manual operating means 101 Shutter 102 Machine frame 103 Belt 104 Controller 105 Grain flow rate detection sensor 106 Wall flow rate detection sensor 107 No. 2 reduced grain flow rate detection sensor 109 Vehicle speed Sensor 113 Belt type continuously variable transmission 114 Actuator (motor) 115 Endless belt 311a 籾 discharge port 311b 籾 discharge port M3, M4 Drive actuator

Claims (4)

A handling chamber (66) provided with a handling cylinder (69) for separating the grain from the cereal, and a second object in the workpiece obtained by processing the cereal that has passed through the handling chamber (66) A second processing chamber (67) provided with a second processing cylinder (70) for processing
Dust processing cylinder (71) which is provided in the vicinity of the second processing chamber (67) and which mainly processes swarf in the processed material obtained by processing the cereal straw that has passed through the handling chamber (66). A dust disposal chamber (68) comprising:
A swing shelf (51) for sieving the workpieces falling from the handling chamber (66), the second processing chamber (67) and the dust removal processing chamber (68);
In the threshing apparatus provided with the tang (79) for blowing and sorting the workpiece falling from the swing shelf (51),
An auxiliary fan (97) for blowing air into the tang (79) is provided on the outside of the tang (79) and at least on the opposite side of the dust disposal cylinder (71) and the second processing cylinder (70). ,
Furthermore, each auxiliary fan (97) is provided with driving means (98, 100) capable of independent driving,
Of the auxiliary fan (97), only the auxiliary fan (97) on the opposite side of the arrangement part of the dust removal cylinder (71) and the second treatment cylinder (70) is driven, and the dust discharge cylinders (71) and 2 are driven. The air volume of the auxiliary fan (97) on the side opposite to the arrangement part of the number processing cylinder (70) is determined by the air volume of the auxiliary fan (97) on the arrangement part side of the dust processing cylinder (71) and the second processing cylinder (70). Threshing device characterized in that it also increases.  2. The threshing apparatus according to claim 1, wherein the rotation axis of the auxiliary fan (97) is provided coaxially with the rotation axis (79b) of the tang fan (79a).  The threshing apparatus according to claim 1, further comprising manual operation means (100) for manually turning on and off the rotational drive of the auxiliary fan (97).  Load detecting means (105 to 107) for detecting the size of the threshing processing load, and a control device for controlling the driving of the auxiliary fan (97) according to the size of the threshing processing load of the load detecting means (105 to 107). The threshing apparatus according to claim 1, further comprising (104).

Images