WO2005032239A1 - 汎用形コンバインの脱穀装置 - Google Patents
汎用形コンバインの脱穀装置 Download PDFInfo
- Publication number
- WO2005032239A1 WO2005032239A1 PCT/JP2004/013454 JP2004013454W WO2005032239A1 WO 2005032239 A1 WO2005032239 A1 WO 2005032239A1 JP 2004013454 W JP2004013454 W JP 2004013454W WO 2005032239 A1 WO2005032239 A1 WO 2005032239A1
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- WIPO (PCT)
- Prior art keywords
- auger
- rotor
- height
- dust
- teeth
- Prior art date
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Classifications
-
- A—HUMAN NECESSITIES
- A01—AGRICULTURE; FORESTRY; ANIMAL HUSBANDRY; HUNTING; TRAPPING; FISHING
- A01F—PROCESSING OF HARVESTED PRODUCE; HAY OR STRAW PRESSES; DEVICES FOR STORING AGRICULTURAL OR HORTICULTURAL PRODUCE
- A01F12/00—Parts or details of threshing apparatus
- A01F12/18—Threshing devices
- A01F12/20—Threshing cylinders with ribs
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- A—HUMAN NECESSITIES
- A01—AGRICULTURE; FORESTRY; ANIMAL HUSBANDRY; HUNTING; TRAPPING; FISHING
- A01D—HARVESTING; MOWING
- A01D41/00—Combines, i.e. harvesters or mowers combined with threshing devices
Definitions
- the present invention is also referred to as a general-purpose axial flow type in which a culm in a state of being attached to a grain in a planted state in a field is cut from a root portion and is directly input into a threshing chamber in which a screw rotor rotates.
- the present invention relates to a general-purpose combine threshing apparatus, in which an auger and a toothing provided on a rotor and a dust valve provided on a case side are provided.
- Patent Document 1 Japanese Utility Model Application Laid-open No. 5-2639
- Patent Document 2 JP-A-10-337119
- the mechanism for adjusting the dust feed valve disposed above the screw rotor is configured to minimize the required power in accordance with a change in the configuration of the screw rotor.
- the height of the auger is 34 mm or more.
- the auger height is approximately 44. Omm.
- a plurality of dust-feeding valves protrude forward and rearward in the direction substantially perpendicular to the rotor axis toward the outer periphery of the rotor, and the angle of the dust-feed valve with respect to the direction perpendicular to the rotor axis is determined by threshing skill. On the side, it is set to be larger in the feed direction and smaller on the lower side.
- the screw rotor in which an auger is wound around the outer periphery of the rotor and teeth are protruded in a radial direction from the auger, the screw rotor is divided into three sections over the entire length, and a first section is provided from the front. In the second section and the second section, the number of teeth is arranged on one circumference, and in the third section, the number of teeth is smaller than the plurality of teeth on one circumference.
- a plurality of dust feed valves are arranged in a handling drum chamber on the outer circumference of the screw rotor.
- the number of teeth handled in the first section is eight, and the number of teeth handled in the third section is 418.
- the angle of the dust valve in the first section and the angle of the dust valve in the second section and the third section can be changed by an operating device, and the angle operating device is arranged near the driver's seat. Is
- the height of the auger wound around the rotor is defined as:
- the ratio of the tooth protrusion protruding from the auger to the height of the auger is 5 and the protrusion of the tooth treatment is greater than 1.57 and 5.4 or less.
- the power required for the rotation of the screw rotor can be reduced compared to the conventional general-purpose combine while maintaining it.
- the height of the auger is set to 34 mm or more, the threshing performance can be maintained as it is while the required power of the rotor shaft is reduced.
- the auger height is set to approximately 44 mm, the required power is transmitted to the rotor shaft most efficiently, and the threshing performance can be maintained, the performance can be stabilized, and the power can be reduced. .
- a plurality of dust-feeding valves protrude forward and rearward in the direction substantially perpendicular to the rotor axis toward the outer periphery of the rotor, and the angle of the dust-feed valve with respect to the direction perpendicular to the rotor axis is determined by threshing.
- the power required was able to be reduced because it was set to be large in the feed direction and small on the downstream side.
- the screw rotor in which an auger is wound around the outer periphery of the rotor and teeth are protruded in a radial direction from the auger, the screw rotor is divided into three sections over the entire length, and the first section is provided from the front. In the second section and the second section, the number of teeth is arranged on one circumference, and in the third section, the number of teeth is smaller than the plurality of teeth on one circumference.
- a plurality of dust valves were placed in the handling chamber around the rotation of the screw rotor, In order to reduce the required power of the motor, the ratio of the height A of the auger 3 and the ratio of the protrusion B of the toothing 2 has been changed. You can.
- the height of the auger 3 is reduced to reduce the required power of the screw rotor.
- the third loss and the fourth loss can be reduced to the same level as before.
- the angle of the dust valve in the first section and the angle of the dust valve in the second section and the third section can be respectively changed by an operating device, and the angle operating device is placed near the driver's seat.
- the angle of the dust valve can be changed arbitrarily according to the type of grain, the growing state of the grain, the cutting state, etc. That change operation can easily be changed by the driver's seat power.
- the first section and the second and third sections can be operated separately, they can be changed according to the type and condition of the grain, etc., to further improve threshing performance and reduce the required power of the screw rotor.
- the third loss and the fourth loss caused by changing the ratio between the height A of the auger 3 and the protrusion B of the toothing 2 can be reduced to the same level as before.
- FIG. 1 is a partial cross-sectional view of the entire side surface of a general-purpose combine.
- FIG. 2 is a plan view of a screw rotor arranged in the general-purpose combine threshing apparatus of the present invention.
- FIG. 3 is a plan view showing a positional relationship between a screw rotor and a dust valve.
- FIG. 4 is a plan view showing a configuration in which a dust valve is divided into three sets and each can be adjusted.
- FIG. 5 is a side view of a front end portion of the screw rotor.
- FIG. 6 is a front view of the front end of the screw rotor.
- FIG. 7 is a front view showing a configuration in which the number of teeth 2 to be mounted on the auger 3 of the screw rotor is eight on the circumference.
- FIG. 8 is a front view of a state in which four teeth 2 are provided on the circumference of the auger 3.
- FIG. 9 is an enlarged front view showing the relationship between the height of the auger 3 and the height of the toothing 2, showing (a) a context and (b) a crimped net.
- FIG. 10 is a side sectional view showing the auger 3, the toothing 2, and the inter-augment reinforcing plate 41.
- FIG. 11 is a front view showing the relative positions of a screw rotor, toothing 2 and a dust valve.
- FIG. 12 is a front view showing the relationship between the auger 3 and the toothing 2 of the screw rotor.
- FIG. 13 is a perspective view of (a) Conscape G, and (b) a state in which a crimp net is taken out.
- FIG. 14 is an enlarged perspective view of the Conscape G.
- FIG. 15 is a plan view showing another embodiment in which a dust valve can be adjusted.
- FIG. 16 is a plan view and a side view showing an embodiment in which a dust valve angle can be adjusted and four front parts are larger in angle than five rear parts.
- FIG. 17 is an enlarged perspective view showing a state in which a conscape G is constituted by a vertical round bar 5 and horizontal plate-shaped bars 7 and 8.
- FIG. 18 is a front view showing a fixed state of the end horizontal plate-shaped bar 8 and the vertical round bar bar 5.
- FIG. 19 is a front view showing a fixed state of the intermediate horizontal plate-like bar 7 and the vertical round bar bar 5.
- FIG. 20 is a graph showing the relationship between the power reduction amount and the grain recovery loss when the dust valve angle and the auger height are changed, with the horizontal axis as a condition.
- FIG. 21 shows the relationship between the power reduction amount and the grain recovery loss when the dust valve angle and the auger height are changed, with the horizontal axis representing the dust valve opening and the dust valve angle being the front part.
- Figure with 8 degrees, 4 degrees in the middle and 4 degrees in the rear.
- FIG. 22 shows the relationship between the power reduction amount and the grain recovery loss when the dust valve angle and the auger height are changed.
- the horizontal axis is the dust valve opening, and the dust valve angle is Figure with 8 degrees, middle section at 8 degrees, and rear section at 4 degrees.
- FIG. 23 shows the relationship between the amount of power reduction and the grain recovery loss when the dust valve angle and auger height are changed, with the horizontal axis representing the dust valve opening and the dust valve angle being the front part.
- Figure with 8 degrees, middle 7 degrees and rear 6 degrees.
- FIG. 24 is a graph showing the relationship when threshing other types of rice, and the horizontal axis is a condition.
- FIG. 25 is a graph showing the relationship when threshing other types of paddy rice, with the horizontal axis representing the dust valve opening.
- FIG. 26 A graph showing the relationship when threshing other types of paddy rice, with the horizontal axis representing the dust valve opening and increasing the test data.
- FIG. 27 is a graph showing the relationship between auger height and grain loss reduction in common varieties.
- FIG. 28 is a graph showing the relationship between the height of augers of hard-to-grain seeds and the rate of reduction of grain loss.
- FIG. 29 is a view showing the relationship between the auger height and the power reduction rate in a normal species.
- FIG. 30 is a view showing the relationship between the auger height and the power reduction rate of the hard-to-grass seed.
- FIG. 31 is a view showing the relationship between the height of the auger and the degree of opening of the dust valve at which the power reduction effect and the culm loss reduction effect begin to appear.
- FIG. 32 is a diagram showing a relationship between auger height, dust valve opening, and power ratio.
- FIG. 33 is a diagram showing a relationship between auger height, grain loss, and rotor shaft power ratio.
- FIG. 34 is a view showing the relationship between the ratio of culm cutting, the ratio of damaged grains, and the ratio of branch stalks to the auger height and the current condition.
- FIG. 35 is a diagram comparing the relationship between the present invention and the present invention with respect to the relationship between the ratio of the auger height to the toothing allowance and the rotor shaft power ratio.
- FIG. 36 is a graph comparing the relationship between the present situation and the case of the present invention in the relationship between the ratio of the auger height to the tooth removal allowance and the ratio of the culm loss.
- FIG. 37 is a diagram showing a rotor shaft power ratio when the number of teeth handled in the rear handling chamber L3 is eight and four.
- FIG. 38 is a graph showing the ratio of total grain loss when the number of teeth handled in the rear handling chamber L3 is eight and four.
- Fig. 1 shows the general configuration of a general-purpose combine equipped with a second mower M. The description will be made assuming that the traveling direction of the aircraft (the left direction in FIG. 1) is forward.
- a threshing device is mounted on the crawler traveling device 15.
- a feeder box 16 protrudes forward from the threshing device, a platform 14 is provided at the tip of the feeder box 16, and an auger mechanism 20 is arranged in the platform 14.
- a main cutting blade 19 is arranged so as to cover the entire cutting width, and further, weeding devices 18 are arranged on both front sides of the main cutting blade.
- a feeding reel mechanism 21 is provided above the main cutting blade 19 and the weeding device 18, a feeding reel mechanism 21 is provided above the main cutting blade 19 and the weeding device 18, a feeding reel mechanism 21 is provided above the main cutting blade 19 and the weeding device 18, a feeding reel mechanism 21 is provided above the main cutting blade 19 and the weeding device 18, a feeding reel mechanism 21 is provided above the main cutting blade 19 and the weeding device 18, a feeding reel mechanism 21 is provided above the main cutting blade 19 and the weeding device 18, a feeding reel mechanism 21 is provided above the main cutting blade 19 and the weeding device 18, a feeding reel mechanism 21 is provided above the main cutting blade 19 and the weeding device 18, a feeding reel mechanism 21 is provided above the main cutting blade 19 and the weeding device 18, a feeding reel mechanism 21 is provided above the main cutting blade 19 and the weeding device 18, a feeding reel mechanism 21 is provided above the main cutting blade 19 and the weeding device 18, a feeding reel mechanism 21 is provided above the main cutting blade 19 and the weeding device 18, a
- a grain discharge auger 23 is arranged on the dren tank 24, and a driver's cabin 22 is provided in front of the dren tank 24.
- the present invention relates to the configuration of a screw rotor (handle cylinder) disposed inside a threshing apparatus, a capture or crimping network as a receiving net, and a dust valve in a general-purpose combine having the above configuration.
- An auger (spiral blade) 3 is wound around the outer periphery of a rotor 1 which is formed in a cylindrical shape and rotatably arranged, and toothing 2 is projected from the auger 3 in a radial direction to form a screw rotor.
- a screw rotor is arranged in the front and rear horizontal direction inside the handling room of the general-purpose combine threshing unit, and is rotatably supported by a screw rotor shaft 10 fixed at the axial center position in the front and rear direction parallel to the traveling direction.
- the tip portion of the rotor 1 (body) constituting the screw rotor is formed as a cone-shaped front end rotor portion 1a, and the front end rotor portion la is further different from the auger (spiral blade) 3 in a special shape.
- the front end auger 4 of the shape (crescent) is fixed.
- the front end auger 4 The selected material in an integrated state of cereal stalks and grains, whose roots have been cut by the part K, is taken into the handling room and can be smoothly transported backward.
- a helical auger 3 having a fixed height is fixed in a wound state around the rotor 1 constituted by the rotating tubular body located at the rear of the front end rotor portion la. I have.
- An inter-augment reinforcing plate 41 is fixed between the augers 3 to maintain the strength of the auger 3.
- the auger 3 mainly has a function of transporting the material to be sorted from the front to the rear of the handling chamber, and the auger 3 is provided between the auger 3, the handling teeth 2 protruding around the auger 3, and a later-described concave G. Among them, the culm and the spike force also have a role for threshing the grains.
- the inter-augment reinforcing plate 41 serves to reinforce the auger 3.
- the front end portion of the handling room has the following configuration.
- a spring damper 40 is provided between the side of the handle cover 6 and the body frame to assist this lifting force.
- the handle cover lock fitting 39 for locking the handle cover 6 so as not to be further opened is provided with the side portion of the handle cover 6 and the body. It is located between the frames.
- a plurality of dust feed valves 13, 13, 11, 11, 12, 12,... Protrude substantially parallel to the outer peripheral side of the rotor 1 in the front-rear direction, and a body side covering the upper part of the rotor 1.
- a plurality of dust feed valves 13, 11, and 12 are disposed substantially in the left-right direction from the inner surface of the drum cover 6 as a member.
- the dust valves 13, 11, and 12 are provided with a plate having an arc-shaped lower surface as a vertical surface, are divided into a plurality of front and rear sets, and are arranged so that the angle can be changed by an angle operating device via a link mechanism. . In this embodiment, as shown in FIG.
- the front compartment L1 of the first compartment, the middle compartment L2 of the second compartment, and the rear compartment L3 of the third compartment are divided into compartments.
- a front dust valve 13 ⁇ 13 ⁇ ⁇ ⁇ , an intermediate dust valve 11 ⁇ 11 ⁇ ⁇ ⁇ and a rear dust valve 12 ⁇ 12 ⁇ ⁇ ⁇ ⁇ are arranged.
- the front dust valve 13 is supported so as to be able to rotate back and forth about the center of the left and right sides, and is disposed in the front and rear direction at one end (left side in the traveling direction) of a valve body 13a '13b' 13c disposed in parallel.
- the front link of the connecting link 13e is connected to the front end of the connecting link 13e via a connecting link 13d, and the front dust feed valve adjusting lever 9 serving as an angle operating device is connected to the connecting link 13e.
- Dust valve adjustment The angle of the front dust valve 13 can be changed by rotating the lever 9 and the handle cover 6 as shown in FIG. 11 is provided so that the front dust valve adjustment lever 9 can be locked at any position.
- the front dust control valve adjustment lever guide 38 is provided on the top.
- the inside of the handling room is divided into three sections in the front-rear direction for convenience. That is, the front compartment L1 of the first compartment, the middle compartment L2 of the second compartment, and the rear compartment L3 of the third compartment are partitioned.
- the configuration of the tooth handling 2 and the dust valve is changed in the front handling room L1, the middle handling room L2, and the rear handling room L3, respectively.
- the front dust sending valve 13 is disposed on the front part of the rotor 1 behind the cone-shaped front end rotor la and the front dust sending valve 13 is provided.
- the valve 13 is operable by an external force of the drum cover 6 and a front dust control valve adjusting lever 9.
- the operation angle of the front dust control valve adjusting lever 9 is configured such that a multistage locking portion is provided in the front dust control valve adjusting lever guide 38 as shown in FIG. ing.
- the locking configuration is not limited.
- Three front dust feed valves 13 in the front handling chamber L1 are arranged at substantially the same pitch as the auger 3 from the position after the end of the front rotor portion la.
- the three valve bodies 13a ', 13b', and 13c are connected to the front dust-feeding valve adjustment lever 9 via the connection link 13e and the connection link 13d. Note that the number of valve elements of the dust valve 13 is not limited, and three to four can be provided.
- the intermediate dust valve 11 is configured by connecting five valve elements 11a, lib, 11c, lid, and lie by a connection link llf.
- One end of an adjustment fixed arm portion l lg is pivotally connected to a connection portion between the front end intermediate dust transfer valve 11a and the connection link l lf in the intermediate dust transfer valve 11, and the adjustment fixed arm portion l lg is connected.
- the other end is fixed to one of a plurality of fixing holes (three in this embodiment,;) provided on the handling drum cover 6 to set the angle.
- the rear dust valve 12 is composed of five valve elements 12a, 12b, 12c, 12d, and 12e.
- the five rear dust feed valves 12 are connected by a connecting link 12f so that the rotation can be integrally adjusted.
- An adjusting fixed arm portion 12g is provided at one end of the rear dust feeding valve 12a and the connecting link 12f in the front end of the rear dust sending valve 12, and the adjusting fixed arm portion 12g allows the handle cylinder cover 6 to be fixed. It is configured so that the angle is fixed by fixing it to one of the provided holes (three in this embodiment) with a pin or the like.
- the dust valve can be configured such that the angle can be separately changed on the threshing upper side and the threshing lower side.
- the configuration of the front dust valve 13 and the angle adjustment mechanism (adjustment mechanism in the first section) are the same as those in FIG. 4 described above, and the dust valves in the second section and the third section are configured so that the angle can be adjusted simultaneously. ing .
- Intermediate dust valve 11 and rear dust valve 12 have valve body lla 'lib' lie 'lid and valve body 12a' 12b '12c and 12d-12e.
- One end of the valve body 1 la'lib • llc-lld-12a-12b-12c-12d-l 2e (in this embodiment, the left side in the traveling direction) is pivotally supported by a connecting link 34, and the connecting link 34 extends forward.
- the front end is pivotally supported by one end of a connecting link 35, and the other end of the connecting link 35 is pivotally supported by a cover (body) side, and a mid-rear dust control valve adjusting lever serving as an angle operating device.
- a rear end of 36 is fixedly provided, and a middle portion of the middle rear dust valve adjusting lever 36 is configured to be lockable at a desired position within a rotation range by a lever guide 37.
- the front end of the front dust control valve adjusting lever 9 and the middle rear rear dust control valve adjusting lever 36 protrude forward and extend to the vicinity of the driver's seat.
- the angle of each valve body can be adjusted by rotating the lever 9 and the middle rear dust valve adjustment lever 36 respectively. For example, when the middle rear dust valve adjusting lever 36 is turned, the connecting link 34 is moved back and forth through the connecting link 35, and each valve body lla'llb '' '12e is turned back and forth, and The inclination angle can be changed.
- the above adjusting mechanism is not limited, and the rotating base of the connecting link 13d'35 is connected to the output shaft of the motor. May be configured to rotate. It is desirable to arrange a scale or the like near the lever serving as the adjusting means so that the adjusting position can be easily divided.
- the dust feed valve may be configured such that four angles on the threshing-upper side and five on the threshing-lower side can be integrally changed in angle.
- ⁇ For 12 rotor axes
- the angle with respect to the perpendicular direction is set to be large in the feed direction on the threshing good side and small on the poor threshing side.
- the angles of the dust feed valves 13 and 12 with respect to the auger are set to be substantially equal on the lower thrust side, which is large in the feeding direction on the threshing good side.
- the angle of the four front dust control valves 13 with respect to the left-right direction is equal to the rear five dust control valves 12 12
- the angle is set to be larger than the angle with respect to the left-right direction.
- FIG. 13 (a), FIG. 14, and FIG. 17 to FIG. 19 a description will be given of the configuration of the concave G as a receiving net disposed below the screw rotor of the present invention.
- the front and rear ends of the vertical round bar 5 are fixed to the inner side (rotor side) of the intermediate horizontal plate 7 and the end horizontal plate 8, and the vertical round bar 5 is fixed.
- the portion of the end horizontal plate bar 8 to be fixed to the vertical round bar bar is directly welded (brazed etc.) to the inner arc surface of the end horizontal plate bar 8 as shown in Fig. 18.
- 5 is fixed at a predetermined mounting position.
- the portion where the vertical round bar bar 5 is fixed to the intermediate horizontal plate bar 7 is, as shown in FIG.
- a substantially arc-shaped insertion groove is formed at the installation position on the inside, and the vertical round bar 5 is fitted into this, and the length of the protruding portion is set to the diameter of the vertical round bar 5.
- the welding and fixing configuration is set so that t is less than half. It is also possible to use a crimping network as shown in Fig. 9 (b) and Fig. 13 (b) instead of Conscape G as the type of receiving network, and threshing performance almost equivalent can be obtained.
- the crimped net has a wavy vertical line 25-25 and a horizontal line 26-26 The periphery is fixed to a net frame 27.
- a plurality of teeth 2 on one circumference of the auger 3 are arranged at equal intervals, and eight in this embodiment. Has been planted. However, in the rear handling room L3, half of a plurality of the augers 3 are planted at equal intervals on the circumference of the auger 3 as shown in FIG. 8, and in the present embodiment, four are planted.
- the length and O of each A-E are defined as follows. As shown in Fig.
- A is the auger height (the length from the outer periphery of the rotor to the tip of the auger)
- B is the auger force
- the protruding tooth is protruding (the length of the auger tip force to the tip of the auger)
- C is the auger force.
- the length from the inner end of the receiving net to the tip of the toothing, D is the inner end force of the receiving net, the length from the outer circumference of the rotor, E is the radius of the rotor, and O is the center of the rotor.
- the horizontal axis indicates each condition (conditions 17), and the vertical axis indicates the reduction rate (%) with respect to condition 1.
- condition 1 was used as a reference, and this condition 1 is a value obtained by the conventional (hereafter referred to as “current”) auger height and toothing allowance. That is, in FIGS. 9 and 16, the inclination angle of the dust valve is 0 degree with respect to the direction perpendicular to the axis O of the rotor, the auger height A from the rotor surface is 54 mm, and the auger protrudes from the auger 3.
- the margin B of the tooth treatment 2 is 17 mm, and the value obtained when the total flow rate excluding the grains is 9000 kg / h flowing through the threshing device is set as a reference value.
- the inclination angle of the dust valve indicates the angle in the feed direction with respect to the direction perpendicular to the axis of the rotor.
- the axis of the rotor is oriented in the front-rear direction. It can also be referred to as the inclination angle with respect to the left and right directions.
- the rotor diameter is E
- the distance between the outer periphery of the rotor 1 and the upper surface of the concave is D
- D A + B + C.
- Condition 2 is that, when the dust valve angle is 0 degree and the auger height is 10 mm (the auger height A is 44 mm) (the protrusion B of the tooth handling is 27 mm at this time), the rotor shaft power is reduced.
- the rate is minus 25% (black circle), which is inferior to the standard condition 1, and the grain loss (grain discharged after sorting by the sorting device, so-called No. 3 loss, and grain discharged from the rear of the rotor, so-called The reduction rate is 38% (triangle). In other words, a large amount of power is needed to improve the loss.
- Condition 3 is that when the dust valve angle is 4 degrees and the auger height is -10 mm, the rotor shaft power The reduction rate is minus 10% (solid circle), and the grain loss reduction rate is plus 16% (triangle). Conditions 417 are similarly shown.
- Condition 6 increases both power load and grain loss
- Condition 7 reduces power load but increases grain loss
- the load when the auger height is 10 mm (the auger height A is 44 mm, and the protrusion B of the tooth handling is 27 mm at this time) and the dust valve angle is 8 degrees is the load. It is preferable when considering grain loss.
- FIG. 21, FIG. 22, and FIG. 23 show the same data as FIG. 20.
- the horizontal axis represents the dust valve opening, and the vertical axis represents the reduction rate with respect to the current state. The case of is shown. Further, at the right end in each of FIGS. 21 to 23, the result of changing the angles of the intermediate dust-removing valve 11 and the rear dust-removing valve 13 with the auger height 10 mm, the angle of the front Is shown.
- FIG. 21 shows the result when the angle of the front dust valve 13 is 8 degrees, and the angle of the intermediate dust valve 11 and the rear dust valve 12 is 4 degrees. In this case, the power is at the current level and the grain loss is reduced.
- FIG. 22 shows the result when the angle between the front dust valve 13 and the intermediate dust valve 11 is 8 degrees and the angle of the rear dust valve 12 is 4 degrees at the right end. In this case, both power and grain loss will be lower than at present.
- FIG. 23 shows the results at the right end when the front dust valve 13 has an angle of 8 degrees, the intermediate dust valve 11 has an angle of 7 degrees, and the rear dust valve 12 has an angle of 6 degrees. In this case, the grain loss is at the current level and the power is reduced.
- Figs. 20 and 21 show the case where a certain type a (common type: Yuminori nori) of paddy rice is harvested.
- Figs. Morning light In the same way as above, considering the experiment and consideration, in the case of condition 4 (dust valve angle 8 degrees, auger height -10 mm) and condition 7 (dust valve angle 8 degrees, auger height -5 mm), the power Both loading and grain loss are reduced, with favorable results.
- Condition 8 Condition 13 shows that increasing the auger height, that is, increasing the auger height decreases the power load but increases the grain loss. This is because the distance between the auger and the cape is shortened, the rubbing of the grain stalk is reduced, and the grain stalk enters the auger and is transported, and the grain does not fall to the sorting device side, so the grain This is because the loss increases and the transfer power load decreases.
- Fig. 26 shows the results of a test conducted at a high auger height level for a difficult-to-threat type, and as a result, when the auger height was lowered and the dust valve was opened, threshing performance was maintained. It is a component that the power is reduced.
- condition 4 is the most efficient one for threshing, even when the varieties of rice are different. That is, when the inclination angle of the dust valve is 8 degrees and the auger height is 10 mm shorter than the reference height, that is, 44 mm.
- Figures 27 and 28 show the relationship between the auger height and the grain loss reduction rate based on experiments. The lower the auger height, the greater the grain loss reduction rate, in other words, the grain loss reduction rate. Losses are reduced. This is because if the auger height is made lower than it is now, the allowance for tooth treatment will increase, the frequency of contact with the grain culm will increase, the shedding performance will improve, and grain loss will decrease.
- the loss increases when the feed angle of the dust valve is increased. This improves transportability and increases the loss of grain due to reduced residence time in the handling room.
- Figs. 29 and 30 show the relationship between the auger height and the power reduction rate based on experiments.
- the power reduction rate decreases. .
- lowering the auger height without changing the dust valve angle increases the power. This is because the higher the auger, the better the distribution of cereal stalks and the lower the resistance. The lower the auger, the more the stalks are rubbed and the higher the resistance.
- FIG. 31 is a diagram showing the relationship between the auger height based on the experiment and the opening of the dust-feeding valve at which the power reduction effect and the culm-loss loss reduction effect begin to appear, plotted with black squares.
- the lower side of the curve connecting the curves shows the range in which the effect of reducing the loss of the culm is reduced, and it can be seen that the lower the auger height, the more the effect of reducing the grain loss is exhibited. This is because the degree to which the cereal stems are rubbed increases as described above.
- the upper side of the curve connecting the points plotted with black circles is the range that has the power reduction effect. If the auger height is lower than about 54 mm, the power is reduced by opening the dust valve angle, and the power is reduced by more than 54 mm. It can be seen that the power reduction effect is obtained even when the dust valve opening is turned to the negative side at the height.
- the range in which the power reduction effect and the reduction effect of the culm loss are also reduced is the range where the auger height where the two curves intersect is about 45 mm or less and the dust valve opening is about 4 degrees to 12 degrees. Is the most efficient. If the auger height is about 45 mm or less, the culm will be properly rubbed, and the dust valve will be angled with respect to the auger to provide appropriate resistance. There is a range where the auger height is about 55 mm or more and the dust valve opening is in the minus range, but there is a range that has both a grain loss reduction effect and a power reduction effect. The threshing efficiency will be low.
- the grain is most efficiently obtained when the auger height is less than about 45 mm and the dust valve angle is around 8 degrees.
- FIG. 32 shows the results of a test conducted with a large number of data to clarify the tendency.
- the thick line shows the relationship between the auger height and the opening of the dust valve, which is equivalent to the current culm loss
- the thin line shows the relationship between the auger height and the opening of the dust valve, which is equivalent to the current power.
- the dotted line shows the relationship between the ratio to the current power and the height of the auger when the loss is equivalent to the current culm loss.
- Fig. 33 shows the relationship between the exhaust port loss (No. 3 loss) and the auger height when the culm opening loss is equivalent to the current state by a solid line. The relationship with the height is shown by the dotted line. From this figure, when the culm loss is equivalent to the current situation, the dust loss is also equivalent, and the sum of the grain loss generated by the culm opening and the exhaust port force is constant even when the auger height changes. It turns out that there is. However, the power decreases as the height is lower than the current auger height, and increases when the power is higher than the current auger height. The lower the auger height is, the lower the transport capacity of the culm is.
- the transportability can be restored by opening the dust valve, and the residence time in the handling room can be maintained at the current state.
- grain loss does not change.
- the lower the auger the greater the gap between the outer surface of the auger and the receiving net, and the less the friction between the auger and the grain stem, the lower the power.
- the auger height is made lower than the current level (54 mm) to reduce the rotor power while maintaining the grain loss as it is. You can do it.
- the rotor diameter is 500 mm, and the rotor diameter is twice as long as the outer diameter of the drum, that is, the radius E in FIG.
- Fig. 34 shows the relationship between the ratio of culm breaks and the auger height to the current condition by a thick line 2), the relationship between the ratio of damaged grains to the current condition and the auger height by a thin line, and The relationship between the ratio and the auger height is shown by the dotted line.
- Damaged grains tend to increase slightly when the auger height is lowered, and branch stalks tend to decrease slightly, but both are at the current level.
- the auger height is lower than 34 mm, it can be seen that culm breakage increases sharply.
- a lower auger results in more teething allowances, which increases the frequency of contact with grain culm and increases culm breakage.
- the degree of change in the culm changes is small and the current level is stably maintained. Damaged grains and branch stalks also maintain the current level.
- Fig. 35 shows the ratio of the auger height A and the protruding tooth B at the current ratio of 1.5 and the ratio of 5 to 2.7. This shows a comparison of the rotor power with the case of the concave structure, and as a result, it is possible that the rotor power is improved by 36%.
- Fig. 36 shows the comparison between the current situation where the ratio of the auger height A to the toothing allowance B is 5: 1.5 and the loss of the culm when the ratio is 5: 2.7. It turns out that it improved by 15%. From the above results, it was found that even if the rotor diameter changes, power and loss can be reduced by setting A: B to an appropriate ratio, that is, approximately 5 to 3. Another advantage was that the combination with the concave structure shown in Fig. 19 had a significant power reduction effect. At this time, the rotor diameter is 58 Omm.
- FIG. 37 is a graph showing the power ratio of the rotor shaft when the number of teeth handled in the rear handling chamber L3 is eight and four.
- FIG. 38 is a graph showing how the number of teeth handled in the rear handling chamber L3 is eight and four. This is a graph showing the ratio of the total grain loss in the case of the number of teeth.Thus, the threshing performance requires less power when the number of teeth 2 in the rear compartment L3 is four than when eight. Is improved.
- the screw rotor is arranged inside the handling room of the threshing apparatus (with the axis thereof) in the front-rear and horizontal directions.
- the present invention can also be applied to a combine in which the axis is arranged in the left-right horizontal direction.
- the threshing apparatus of the present invention can be applied to a general-purpose combine for harvesting rice.
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- Life Sciences & Earth Sciences (AREA)
- Environmental Sciences (AREA)
- Threshing Machine Elements (AREA)
Abstract
Description
Claims
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
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JP2003-329139 | 2003-09-19 | ||
JP2003329139 | 2003-09-19 |
Publications (1)
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WO2005032239A1 true WO2005032239A1 (ja) | 2005-04-14 |
Family
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Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
PCT/JP2004/013454 WO2005032239A1 (ja) | 2003-09-19 | 2004-09-15 | 汎用形コンバインの脱穀装置 |
Country Status (3)
Country | Link |
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KR (1) | KR20060126939A (ja) |
CN (1) | CN1852654A (ja) |
WO (1) | WO2005032239A1 (ja) |
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
CN105052426A (zh) * | 2015-08-07 | 2015-11-18 | 鹤岗市田丰农机制造有限公司 | 带有可调导向叶片的籽粒脱粒密封罩 |
Families Citing this family (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
CN104365292B (zh) * | 2007-01-11 | 2017-11-03 | 株式会社久保田 | 脱粒装置 |
JP4148978B2 (ja) * | 2007-01-11 | 2008-09-10 | 株式会社クボタ | 脱穀装置 |
Citations (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPH01202218A (ja) * | 1988-02-05 | 1989-08-15 | Kubota Ltd | 全稈投入型脱穀装置 |
JPH06276838A (ja) * | 1993-03-23 | 1994-10-04 | Kubota Corp | 軸流型脱穀装置の扱胴構造 |
JPH08298852A (ja) * | 1995-05-08 | 1996-11-19 | Kubota Corp | 軸流型扱胴 |
-
2004
- 2004-09-15 WO PCT/JP2004/013454 patent/WO2005032239A1/ja not_active Application Discontinuation
- 2004-09-15 KR KR1020067005482A patent/KR20060126939A/ko not_active Application Discontinuation
- 2004-09-15 CN CNA2004800269243A patent/CN1852654A/zh active Pending
Patent Citations (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPH01202218A (ja) * | 1988-02-05 | 1989-08-15 | Kubota Ltd | 全稈投入型脱穀装置 |
JPH06276838A (ja) * | 1993-03-23 | 1994-10-04 | Kubota Corp | 軸流型脱穀装置の扱胴構造 |
JPH08298852A (ja) * | 1995-05-08 | 1996-11-19 | Kubota Corp | 軸流型扱胴 |
Cited By (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
CN105052426A (zh) * | 2015-08-07 | 2015-11-18 | 鹤岗市田丰农机制造有限公司 | 带有可调导向叶片的籽粒脱粒密封罩 |
CN105052426B (zh) * | 2015-08-07 | 2017-02-01 | 鹤岗市田丰农机制造有限公司 | 带有可调导向叶片的籽粒脱粒密封罩 |
Also Published As
Publication number | Publication date |
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CN1852654A (zh) | 2006-10-25 |
KR20060126939A (ko) | 2006-12-11 |
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