JP5240252B2 - Threshing device - Google Patents

Description

  The present invention relates to a threshing device mounted on a combine or the like, and belongs to the field of agricultural machinery.

  Conventionally, a combine threshing device blows air from a blower opening opened on the rear side of a red pepper to a swing sorting shelf, a first cereal collection unit, and a second cereal collection unit to perform wind selection. In Patent Document 1, a wind direction plate that can freely change the inclination angle is provided at the upper and lower intermediate portions of the air outlet, and the inclination posture of the wind direction plate is changed according to the detection amount of the processing amount detection sensor provided on the upper side of the swing sorting shelf. Technology is disclosed.

JP-A-7-274696

  However, the technique described in Patent Document 1 only changes the inclination by rotating the lower side up and down at the upper side fulcrum in the inclined posture blowing direction of the wind direction plate depending on the amount of the processing object, and the upper side of the wind direction plate. The ratio of the air volume of the upper sorting air path that blows air from the lower air flow path that blows from the lower side cannot be changed, and the air volume of the lower air path does not change even when the amount of processed material is small. When the amount of the processing object is large due to scattering outside the machine, there is a problem that the air flow to the fine sorting part is insufficient and clogging is caused to prevent the leakage of the grains.

  In addition, threshing selection conditions other than the amount of processed material are not taken into consideration, and the selection state cannot be changed in accordance with the proportion of foreign matter in the processed material or the variety of harvested items. It was. For example, when crops to be harvested are different, a large amount of swarf is generated by the threshing process. Therefore, even when the amount of the processed material is small, it is necessary to increase the air volume of the lower sorting air path and discharge it to the outside.

In order to solve the above-mentioned problems, the present invention takes the following technical means.
That is, the invention according to claim 1 is provided with a sorting part (3b) below the threshing part (3a) having the handling cylinder (12), and the sorting part (3b) is leaked from the threshing part (3a). An oscillating sorting shelf (21) is provided for sorting while moving the lowered workpiece to be oscillated, and a sorting wind is sent from the blower opening (37) provided on the rear side to the lower side of the oscillating sorting shelf (21). The tang (28) that blows, the first cereal basket (31) that collects the first thing that leaks from the swing sorting shelf (21), and the second thing that leaks from the swing sorting shelf (21) The second cereal mash (33) to be collected is provided in order from the upper side in the transfer direction of the workpiece on the swing sorting shelf (21),
The blower port (37) is provided with an upper first wind direction plate (29) and a second wind direction plate (30) in the middle in the vertical direction, and the first wind direction plate (29) and the second wind direction plate (30). The inclined posture of the first wind direction plate (29) and the second wind direction plate (30) is changed in conjunction with each other within the posture change range in which the lower side portion of the selected wind blowing direction is higher than the upper side portion. A layer thickness sensor (50) for detecting a layer thickness of the object to be processed on the swing sorting shelf (21) is provided at the front of the swing sorting shelf (21);
As the layer thickness detected by the layer thickness sensor (50) increases, the posture of the first wind direction plate (29) and the second wind direction plate (30) is changed to a gentle inclination posture, and the layer thickness sensor (50) As the detected layer thickness decreases, the first wind direction plate (29) and the second wind direction plate (30) are changed to steep inclination postures, and the layer thickness detected by the layer thickness sensor (50) When it deviates from the range set between the plate control upper limit value (Th) and the wind direction plate control lower limit value (Tl), the postures of the first wind direction plate (29) and the second wind direction plate (30) are changed. A threshing apparatus comprising a sorting control device (90) for maintaining the maximum inclination posture or the minimum inclination posture.

  According to the second aspect of the present invention, an upper portion of the first wind direction plate (29) on the upper side in the selected wind blowing direction is pivotally supported so as to be pivotable up and down, and the second wind direction plate (30) is intermediate in the selected wind blowing direction. And an interlocking mechanism (59) for pivoting the first wind direction plate (29) and the second wind direction plate (30) up and down. The threshing apparatus according to Item 1.

  The invention according to claim 3 is provided with a second reduction device (89) for returning the second item dropped on the second cereal basket (33) to the front portion of the swing sorting shelf (21), In a state where the wind direction plate (30) is in the maximum inclined posture, the upper end (30b) of the second wind direction plate (30) in the selected wind blowing direction abuts or approaches the bottom surface of the blowing port (37). The threshing apparatus according to claim 1 or 2, wherein a wind path below the second wind direction plate (30) is narrowed.

  Invention of Claim 4 provided the 1st adjustment tool (84) which changes the said wind direction board control upper limit (Th) and the wind direction board control lower limit (Tl), or Claim 1 or Claim characterized by the above-mentioned. A threshing apparatus according to claim 2 or claim 3.

  The invention according to claim 5 is a second adjustment of the inclination posture of the first wind direction plate (29) and the second wind direction plate (30) at the wind direction plate control upper limit value (Th) and the wind direction plate control lower limit value (Tl). It was set as the structure which can be changed with a tool (85), It was set as the threshing apparatus of Claim 1 or Claim 2 or Claim 3 or Claim 4.

  The invention according to claim 6 is configured such that the rotational speed of the tang (28) can be changed, and the detection value of the layer thickness sensor (50) is changed from the wind direction plate control upper limit value (Th) to the wind direction plate control lower limit value (Tl). ), The rotation speed of the tang (28) is kept constant, and the detection value of the layer thickness sensor (50) is larger than the wind direction plate control upper limit value (Th) and from the wind direction plate control lower limit value (Tl). In a small range, control is performed to increase the rotational speed of the red pepper (28) as the detection value of the layer pressure sensor (50) increases. It was set as the threshing apparatus of Claim 4 or Claim 5.

  The invention according to claim 7 is provided with a third adjuster (86) for changing the rotational speed of the red pepper (28) in the range from the wind direction plate control upper limit value (Th) to the wind direction plate control lower limit value (Tl). A threshing apparatus according to claim 6, wherein

  The invention according to claim 8 is provided with a feed chain (10) that sandwiches and conveys the culm on one side of the threshing portion (3a), and the feed chain (10) increases as the detection value of the layer thickness sensor (50) increases. The threshing apparatus according to claim 1, wherein the threshing apparatus is configured to drive at an increased speed.

  The invention according to claim 9 is characterized in that a second tang (75) is provided between the first cereal meal (31) and the second cereal meal (33). A third wind direction plate (76) having an angle changeable at a lower position is provided, and the third wind direction plate (76) is subject to processing of the swing sorting shelf (21) as the detection value of the layer thickness sensor (50) increases. The posture is changed to a steeply inclined posture that blows air to the part on the upper side in the object transfer direction, and the air is blown to the part on the lower side in the object transfer direction of the swing sorting shelf (21) as the detection value of the layer thickness sensor (50) becomes smaller. The threshing apparatus according to any one of claims 1 to 8, wherein the posture is changed to a gentle inclination posture.

  According to invention of Claim 1, as the to-be-processed object layer thickness on the said rocking | swiveling sort shelf (21) increases, the back wind inclination posture of the 1st wind direction board (29) and the 2nd wind direction board (30) is carried out. By changing to a steep inclination and changing the blowing direction of the sorting air to the upper side of the swinging sorting shelf (21) in the workpiece transfer direction, the sorting performance of the swinging sorting shelf (21) is maintained while maintaining the sorting performance. Outside scattering can be suppressed.

  When the layer thickness of the object to be processed on the swing sorting shelf (21) decreases, the tilting posture of the first wind direction plate (29) and the second wind direction plate (30) is set to be a gentle tilt, and the sorting wind is swung. It is possible to maintain the sorting performance by blowing backward to (21) and positively discharging the foreign matter to prevent clogging of the swing sorting shelf (21).

According to the second aspect of the invention, in addition to the effect of the first aspect of the invention, the second wind direction plate (30) is changed to a steeply inclined position by lowering the second wind direction plate (30). Decreasing the opening degree of the sorting air passage, reducing the distance between the bottom surface of the air blowing port (37) and the second wind direction plate (30) to reduce the air volume of the lower sorting air passage of the second air direction plate (30), Can suppress the scattering of grains outside the machine,
When the second wind direction plate (30) is changed to a gentle inclination posture, the amount of air in the upper sorting air path of the second wind direction plate (30) is decreased to promote the leakage to the first cereal culm (31). To increase the yield, increase the air volume of the lower sorting air path of the second wind direction plate (30), prevent contamination from entering the first cereal culm (31), and maintain high sorting performance be able to.

  According to the invention described in claim 3, in addition to the effect of the invention described in claim 1 or 2, the amount of the object to be processed on the swing sorting shelf (21) is in the maximum inclined posture with a very small inclination. By stopping the air flow from the lower sorting air path of the wind direction plate (30), the grain that should originally be recovered by the first cereal culm (31) is the second reduction device from the second cereal culm (33). (89) can be reduced again to the swing sorting shelf (21) to prevent the grains from circulating and becoming damaged grains, thereby improving the harvest quality and sorting performance.

  According to the invention of claim 4, in addition to the effect of the invention of claim 1 or claim 2 or claim 3, the selection air volume is adjusted to increase or decrease depending on the amount of sawdust or the moisture content of the object to be treated. This increases the adaptability of threshing selection conditions.

  In addition, in the state where the workpiece layer thickness on the swing sorting shelf (21) is thin, the workpiece is likely to be non-uniform, and the fluctuation of the detection value by the layer thickness sensor (50) may increase. By changing the wind direction plate control lower limit (Tl) to the thicker layer side, an inappropriate change in the tilting posture of the first wind direction plate (29) and the second wind direction plate (30) can be prevented, and Deterioration can be prevented.

  According to the invention of claim 5, in addition to the effect of the invention of claim 1 or claim 2 or claim 3 or claim 4, the first wind direction depends on the type of crop to be harvested and the threshing selection state. The rotation angle range of the plate (29) and the second wind direction plate (30) can be changed, and the sorting state in accordance with the state of the object to be processed can be maintained.

  According to the invention of claim 6, in addition to the effect of the invention of claim 1 or claim 2, or claim 3 or claim 4 or claim 5, the detection value of the layer thickness sensor (50) is the wind direction plate. In a range larger than the control upper limit value (Th), both the upper and lower wind paths of the second wind direction plate (30) increase the air volume and perform selection corresponding to the increase in the number of objects to be processed, and the wind direction plate control lower limit value (Tl). In a small range, loss due to scattering outside the machine can be reduced even in a state where the amount of workpieces is extremely small.

  According to the invention described in claim 7, in addition to the effect of the invention described in claim 6, the selected air volume in the range from the wind direction plate control upper limit value (Th) to the wind direction plate control lower limit value (Tl) It is possible to improve the condition adaptability of the threshing device.

  According to the invention described in claim 8, in addition to the effect of the invention described in any one of claims 1 to 7, the feed chain (10) is driven at a higher speed as the layer thickness increases, Since the speed at which the straw passes through the threshing part (3a) is increased, the amount of the material to be leaked from the threshing part (3a) is reduced, and the feed chain (10) is decelerated and driven as the layer thickness is thin. Thoroughly threshing to increase the amount of processed material while reducing branch sticking grains and untreated residue. Accordingly, it is possible to maintain a processing amount suitable for threshing treatment, and improve threshing selection performance.

  According to the invention described in claim 8, in addition to the effect of the invention described in any one of claims 1 to 8, the second tang (75) according to the detection value of the layer thickness sensor (50). ) To reduce off-machine scattering.

Combine side view Side cross section of threshing device Flat section of threshing device Side cross section of threshing device Front sectional view of threshing device Flat section of sorting section Side view of interlocking mechanism Block diagram of sorting control device The figure showing the relation between the detection value of the layer thickness sensor and the wind direction plate inclination angle The figure showing the relationship between the detection value of the layer thickness sensor, the wind direction plate inclination angle and the rotation speed Combined transmission mechanism diagram Side sectional view of a threshing apparatus showing another embodiment Side sectional view of a threshing apparatus showing another embodiment An enlarged side sectional view of the main part of the sorting section A diagram showing the relationship between the value detected by the layer thickness sensor and the aircraft traveling speed

Embodiments of the present invention will be described below with reference to the drawings.
As shown in FIGS. 1 and 2, the combine for carrying out the present invention is provided with a pair of left and right crawlers 2 on the lower side of the body frame 1, and a threshing device 3 on the upper side of the body, and a storage device on the right side of the threshing device 3. 5 and a front operation seat 6 are provided, and a cutting device 4 is provided in front of the machine body. On the rear side of the storage device 5, a discharge device 7 is provided for discharging the grains temporarily stored in the storage device 5 to the outside.

  As shown in FIG. 11, the crawler 2 is configured to be driven by the power of the engine 53 via a hydrostatic continuously variable transmission 72 and a mission 88. The hydrostatic continuously variable transmission 72 connects a hydraulic pump and a hydraulic motor with a closed hydraulic circuit, and rotates the trunnion shaft 87 so that the rotational speed ratio of the output shaft to the input shaft can be changed.

  The threshing device 3 includes an upper threshing unit 3a including a handling room 11 and the like, and a sorting unit 3b including a lower swing sorting shelf 21 and the like. On the left and right sides of the threshing device 3, there is provided a feed chain 10 that holds the cereal stock side and conveys it backward.

  As shown in FIG. 11, the feed chain 10 is wound around a sprocket 10 d provided on the feed chain drive shaft 10 a, and the feed chain drive shaft integrated with the sprocket 10 d is driven by a driving force from the engine 53. A driving force is transmitted to the feed chain drive shaft 10a by a belt, but the transmission is changed steplessly by adjusting the interval between the split pulleys 10b by a feed chain transmission motor 10c.

A handling cylinder in which a large number of linear handling teeth 12a are planted by inserting the tip side of the cereal grain held by the feed chain 10 from the front of the handling chamber 12 in which the handling cylinder 11 is pivoted on the upper part of the threshing device 3. 11 while being subjected to the degranulation action. The lower half periphery of the handling chamber 12 is configured to stretch a handling net 12a so that the threshing workpiece is leaked downward. A second processing chamber 14 on the front side and a dust removal processing chamber 16 on the rear side are provided on the opposite side of the processing chamber 12 from the feed chain 10, and a second processing drum 15 and a dust processing drum 17 are provided in these processing chambers, respectively. Are provided coaxially.
(Communication entrance and stinging collection room)
The start end portion of the dust removal processing chamber 16 communicates with the handling chamber 11, and dividers 18 a and 18 b are raised on the front and rear inner circumferences of the communicating portion A of the handling chamber 11, and depending on the divider 18 a, The leakage property of the threshing material to be processed generated by the threshing action from the handling net 12a is improved, and the partition 18b is configured to promote the feeding of dust such as sawdust to the dust disposal chamber 16. The lower part of the communication part A is provided with a drop hole 19 having a lattice 19a in the front-rear direction. Behind the communicating part A is a stabbed grain collection chamber B in which plate-like processing teeth 12b are attached to the handling cylinder 12 to form a space where the lower side is released and the grains stabbed into the cereals in the handling room 11 are scraped off. Yes. The rear part of the stinging particle collection chamber B is opened to a large size in the lower half portion to form a dust outlet 20.
(Dust removal cylinder)
The dust removal processing chamber 16 is surrounded by a dust removal chamber frame 16a and has an opening on the swing sorting shelf 21 near the end in the transport direction. The swing sorting shelf 21 side is discharged as a net or lattice. A dust treatment cylinder 16 is provided as an interior. A plurality of cutting blades 16b are provided on the inner peripheral surface in the workpiece conveyance direction. A spiral dust-feeding spiral 17a is wound around the communication portion A in the start end portion of the dust removal treatment cylinder 17, and a blade body 17c is provided in the vicinity of the terminal end portion of the dust removal treatment chamber 16, and an intermediate portion therebetween. The flat plate processing teeth 17b are planted on the peripheral surface and arranged so as to enter between the cutting blades 16b.

Thus, the degranulated material containing a large amount of grain generated in front of the handling chamber 11 leaks from the front of the handling net 12a partition 18a, and a relatively large amount of sawdust is generated behind the handling chamber 11. What is contained is fed into the dust removal processing chamber 16 on the side of the communication part A, and cuts long swarf and falls onto the swing sorting shelf 21.
(Second processing room)
The second processing chamber 14 is a grain processing device of the second reduction device 89 that transfers the object to be processed, which has fallen to the second cereal basket (33), onto the swing sorting shelf 21, and is a second processing device provided in the front-rear direction. A processing cylinder 15 is provided, and a second product is supplied above the rear end portion, which is a good transporter of the second processing chamber 14, from the upper end portion of a second lifting cylinder 36 provided in the vertical direction outside the side wall of the threshing device 3. Mouth 36a is desired. The upper side of the second processing chamber 14 is open, the lower half is enclosed by a second processing rod 14a, and the front end of the second processing chamber 14 is opened downward as a second product reducing port 14b.

After the object to be processed supplied from the second object supply port 36b falls toward the second process cylinder 15, the branch process cylinder 15 removes the branch infarction and shreds the branch infarction and sawdust. Then, it is radiated from the second return port 14b to the front side of the swing sorting shelf 21.
(Dust-absorbing fan)
A dust suction fan 39 covered with a dust suction case 40 is provided on the opposite side of the dust sorting chamber 16 above the rear part of the swing sorting shelf 21. The dust suction fan 39 is disposed inside the side wall of the threshing device 3, opens the suction port 40 a inward, and discharges dust from the discharge port 40 b outside the threshing device 3.
(Oscillating sorting shelf)
In the sorting unit 3b, the upper swing sorting shelf 21 is arranged from the front in a flat plate shape or a transfer plate 22 having a plurality of transfer projections, a first sheave 23 having a fixed inclination angle, and a front-to-back distance from the first sheave 23. Are arranged in order, and a second sheave 24 that can change the inclination angle and a plurality of upper edge saw blade-shaped strolacac 25 provided in the left-right direction are arranged in this order, and three are arranged on the rear wall of the threshing device 3 behind the strolacac. A layer thickness sensor 50 that detects the layer thickness of the object to be processed that moves on the transfer shelf is provided above the transfer shelf 22 that opens the gate 38.

  A fine sorting net 26 is provided below the first sheave 23 and the second sheave 24. The first sheave 23 is provided with a sheave cleaning tool 26 fitted in the sheave, and a plurality of the sheave cleaning tools 26 that are integrally connected by alternately pulling the wires of the balance arms 27 arranged below the transfer shelf 22 are reciprocated left and right. It is configured to move, so that non-processed material leveling on the swing sorting shelf 21 and the removal of deposits on the working surface of the first sheave 23 are possible.

  The swing sorting shelf 21 having the above configuration swings back and forth by the sorting shelf shaft 21a and sorts non-processed objects. The transfer shelves 22 and the first sheave 23 receive and sort the processed threshing material mainly containing single grains from the handling net 12a and the drop hole 19. The second sheave 24 receives a threshing object to be processed which contains a lot of impurities such as dust from the dust outlet 20 and the dust processing chamber 16.

A sorting air passage is formed at the lower part of the sorting portion 3b behind the front Kara 28, and an upper first air direction plate 29 and a lower second air direction plate 30 are arranged at the upper air blowing port 37 of the sorting air passage. On the lower side, the first cereal basket 31 and the first shelf board 32, the second cereal grain basket 33 and the second shelf board 34 are provided in this order to form the lower surface of the sorting air passage. The first cereal basket 31 and the first cereal basket 33 are respectively provided with a spiral conveying device called a first cereal spiral 31a and a second cereal spiral 33a in the left-right direction so that one side of the threshing device 3 is covered. Transport while collecting processed materials. The first cereal spiral 31a is transferred to the inside of the storage device 5 by taking over the first cereal spiral 35a installed in the first cereal cylinder 35 at the terminal portion, and the second cereal spiral 33a is second cereal. The workpiece is lifted to the rear end portion of the second processing chamber 14 by taking over the second lifting helix spiral 36 a provided in the cylinder 36.
(Power transmission mechanism of threshing device)
Based on FIG. 11, the transmission mechanism of the threshing apparatus 3 is demonstrated. The threshing input shaft 55 is driven by the belt 56 wound around the output pulley 54 a and the threshing input pulley 55 a provided on the engine output shaft 54 of the engine 53, and the sorting unit driving pulley 55 b provided at one end of the threshing input shaft 55 is driven. It is the structure which drives the 1st collection spiral 31a, the 2nd collection spiral 33a, the dust suction fan 39, etc. of the selection part 3b with the wound belt 58. FIG. The other end portion of the threshing input shaft 55 is configured to drive the handling cylinder 12 and the like of the threshing portion 3a. In addition, 57 is the threshing clutch which switches the threshing apparatus 3 to a drive state and a driving force interruption | blocking state.
(Tang Dynasty)
The tang 28 has a hollow tang drive shaft 28a whose inner periphery is rotatably supported on the outer periphery of the threshing input shaft 55, and a tang transmission pulley 28b provided on the selection drive pulley 55b side of the tang drive shaft 28a. The belt 71 is wound around the Kara input pulley 31c provided on the first grain collecting spiral shaft 31b, and the transmission is input. The tang input pulley 31c and the belt 71 are a belt-type transmission mechanism including a V belt and a split pulley, and are configured such that the drive rotation speed of the tang 28 can be changed steplessly.
(Wind sorting structure)
The configuration of the sorting unit 3b will be described in detail with reference to FIG. 4. The sorting wind generated by the Kara 28 is the first provided between the blower port 37 formed between the upper Kara frame 37a and the lower Kara frame 37b. The wind direction plate 29 has a flat plate shape, and the second wind direction plate 30 is substantially parallel to the first wind direction plate 29 and has a substantially triangular shape with a flat upper surface portion 30b and a downward bent lower surface portion 30c.
(First wind direction plate and second wind direction plate)
The first wind direction plate 29 is pivotally supported by a first support shaft 29a on the upper side of the sorting air path, and the lower side is configured so as to be rotatable up and down. A bent shape is formed so as to be close to 37 a, and even if it is turned up and down, no gap is formed between the upper tang frame 37 a and the first wind direction plate 29 so that the sorting wind does not leak out.

The second wind direction plate 30 is supported by a second support shaft 30a between the upper surface portion 30b and the lower surface portion 30c, so that the upper and lower sides of the sorting air path can be turned up and down.
(Wind direction plate rotation mechanism)
The interlocking mechanism 59 of the first wind direction plate 29 and the second wind direction plate 30 will be described with reference to FIG.

  The second support shaft 30a, which is the rotation shaft of the second wind direction plate 30, and the main link arm 60 attached to the end of the second support shaft 30a rotate integrally. One end of the sub link arm 61 is rotatably connected to the tip of the main link arm 60 by a pin 65, and the other end of the sub link arm 61 is rotatably attached to the circumferential portion of the sector gear 62. The sector gear 62 meshes with a pinion gear 63 that is rotated by a rotation motor 64. A protrusion 62 a protrudes from the circumferential portion of the sector gear 62, and this protrusion 62 a is attached to the long groove portion of the sensor arm 66 a of the rotation angle sensor 66.

The second wind direction plate 30 and the first wind direction plate 29 are connected by a connecting rod 41.
In this way, by rotating the rotation motor 64 forward and backward, the first wind direction plate 29 and the second wind direction plate 30 are rotated in conjunction with each other to change the tilt posture.
(Difference in sorting by changing the direction of the wind direction plate)
The inclination angle of the first wind direction plate 29 and the second wind direction plate with respect to the horizontal plane (hereinafter sometimes simply referred to as the inclination angle) rotates within the angle range in which the lower side is upward, and as shown in FIG. It is desirable that the upstream side of the second wind direction plate 30 is configured to come into contact with the lower tang frame 37b.

  With the above configuration, the upper sorting air path 51 is formed between the first wind direction plate 29 and the second wind direction plate 30, and the lower sorting air path 52 is formed between the second wind direction plate 30 and the lower tang frame 37b. From the upper sorting air passage 52 whose upper and lower surfaces are substantially parallel, sorting air with little irregular fluctuation is supplied to the swing sorting shelf 21, and from the lower sorting air passage 52, the air passage is squeezed to increase the flow velocity. The sorting wind is supplied further back along the shelf board 32.

The first wind direction plate 29 and the second wind direction plate 30 rotate within a range having a rearward rising inclination angle. During this time, the first wind direction plate 29 and the upper surface portion 30b of the second wind direction plate 30 maintain a substantially parallel relationship. Then rotate. Therefore, the sorting air in the upper sorting air passage 51 can always maintain a stable state. Then, the air volume distribution ratio between the upper sorting air passage 51 and the lower sorting air passage 52 is generally determined by the ratio of the opening degrees of both air passages. At the maximum inclination angle, the lower sorting air passage 52 is completely closed, and the entire amount of the sorting air generated by the tang 28 is blown from the upper sorting air passage 51. As the inclination angle becomes gentle, the air volume in the upper sorting air path 51 decreases and the air volume in the lower sorting air path 52 increases.
(Selection control device)
FIG. 8 is a control block diagram of a sorting control device 90 that controls the layer thickness sensor 50 in conjunction with each device. On the input side of the sorting control device 90, there is a layer thickness sensor 50, a traveling speed sensor 82, and a rotation. The angle sensor 66, the red pepper rotation speed sensor 83, the first adjustment tool 84, the second adjustment tool 85, and the third adjustment tool 86 are electrically connected. On the output side, a rotation motor 64, motors 77a and 81a, a yellow transmission motor 28c, a feed chain transmission motor 10c, and a trunnion shaft rotation motor 87a are connected.
(Outline of wind direction plate control)
The first wind direction plate 29 and the second wind direction plate 30 may be configured to be held at an arbitrary angle. However, it is preferable that the first wind direction plate 29 and the second wind direction plate 30 be configured to be automatically changeable according to the amount of workpieces on the swing sorting shelf 21. In this embodiment, as indicated by C1 in FIG. 9, the layer thickness detected by the layer thickness sensor 50 that detects the layer thickness of the object to be processed on the swing sorting shelf 21 increases more gradually when the flow rate is higher. The thinner the flow rate is, the steeper the slope is.
(High flow rate)
Therefore, the sorting wind of the upper sorting wind path 51 and the lower sorting wind path 52 has a steep inclination of the second wind direction plate 30 as the layer thickness is reduced, and the amount of wind toward the front of the swing sorting shelf 21 is increased. The air flow to the rear decreases. When the second wind direction plate 30 is in the maximum inclined posture, as shown in FIG. 14, the upstream side of the second wind direction plate 30 contacts the lower side frame 37b, so the lower sorting air passage 52 is closed, The entire amount is blown from the upper sorting air passage 51. In this state, the selection wind downstream extension line of the upper surface portion 30b of the second wind direction plate 30 faces the vicinity of the suction port 40a of the dust suction case 40, and the fine sorting net 26 and the first sheave 24 to the first half of the second sheave 24 are in the posture. The sorting wind increases, so that the waste can be sucked and discharged out of the machine while restricting the falling of the waste, broken pieces, and branch sticky grains to the first culm 31. Further, since there is no sorting wind along the first shelf 32 from the lower sorting air passage 52, scattering outside the machine from the third port 38 can be prevented.
(At low flow rate)
In addition, if the sorting wind along the shelf 32 is the strongest state at the time of low flow rate, it blows away the fresh grains that should originally fall on the first cereal basket 31 and falls on the second cereal basket 33, Grained in the second processing chamber 14. Although the grain damage may occur due to the action of the second processing cylinder 15, the above problem can be solved in order to reduce the sorting air in the lower sorting air passage 52.

As the workpiece layer thickness on the swing sorting shelf 21 becomes thicker and higher, the second wind direction plate 30 is changed to a gentle inclination posture, and both the upper sorting wind path 51 and the lower sorting wind path 52 are swung. The air is sent to the rear of the shelf 21 to reduce the air volume of the upper sorting air passage 51 and increase the sorting air in the lower sorting air passage 52. When the inclination angle is minimized, the upper surface portion 30b of the second wind direction plate 30 and the downstream extension line of the selected wind are positioned in the vicinity of the upper end portion of the shelf 32, and the object to be dropped onto the cereal collecting basket 31 is the first. While reducing the amount of foreign matter mixed in, it promotes the removal of the sorting air from the sorting unit 3b to the outside of the machine, and keeps the sorting performance by suppressing clogging of the sheave due to the large amount of processed material flowing in. Can do.
(Change control upper / lower limit)
The range of the layer thickness for changing the inclination posture of the wind direction plates 29, 30 is a range in which the detection value of the layer thickness sensor 50 is from the wind direction plate control lower limit value Tl to the wind direction plate control upper limit value Th, and the wind direction plate control lower limit value Tl. If it is lower than the upper limit, the maximum inclination posture is maintained, and if it is higher than the wind direction plate control upper limit value Th, the minimum inclination posture is maintained. These upper and lower limit values Th and Tl can be changed by a rotary switch type first adjuster 84 provided in the vicinity of the operation seat 6. Since the inclination postures of the wind direction plates 29 and 30 are displayed on the monitor, the upper and lower limit values Th and Tl can be easily adjusted while observing the inclination posture and the selected state. In addition, the second adjuster 85 can change the amount of change in the inclination angle of the wind direction plates 29 and 30 with respect to the detection value of the layer thickness sensor 50, so that it can widely correspond to the type and work conditions and improve the sorting performance. Can do. (See C1 and C2 in Figure 9)
(Tang Dynasty rotation control)
As described above, the sorting performance is greatly improved by changing the inclination angle of the first wind direction plate 29 and the second wind direction plate 30, but in this example, the rotational speed of the tang 28 is further increased by the layer thickness sensor. By controlling by 50 detection results, the sorting performance is further enhanced.

  That is, as indicated by S1 in FIG. 10, when the detection value of the layer thickness sensor 50 is between the upper and lower limit values Th and Tl, the rotational speed of the carp 28 is kept constant and is higher than the wind direction plate control lower limit value Tl. When it is low, the rotational speed of the carp 28 is reduced as the detected value decreases, and when it is higher than the wind direction plate control upper limit value Th, the rotational speed of the carp 28 is increased as the detected value increases. C represents the relationship between the layer thickness sensor detection value and the wind direction plates 29 and 30.

  In the region where the value detected by the layer thickness sensor 50 is lower than the wind direction plate control lower limit value Tl, the wind direction plates 29 and 30 are set to the maximum inclination posture to reduce the air volume of the lower sorting air path 52 and the air volume of the upper sorting air path 51 is reduced. Increases to prevent splashing outside the machine, but when the flow rate is extremely low, the rotational speed of the Karatsuo 28 is reduced, and the sorting air volume is set to an appropriate state, to the second grain collection basket 33 for flying outside the machine and fine grains. Can prevent falling. For example, in a working state involving turning of the aircraft, such as a mowing operation, since the supply of cereals is lost during turning, the layer thickness is extremely thin, but the wind direction plates 29 and 30 are inclined to the maximum. By reducing the rotation speed of the carp 28, it is possible to reduce the loss due to scattering outside the machine as much as possible.

  Further, in the region where the value detected by the layer thickness sensor 50 is higher than the wind direction plate control upper limit value Th, it is possible to supply the sorting air volume corresponding to the amount of the object to be processed, and the separation performance is improved because the escape of the sorting wind is promoted. .

Further, the control characteristics can be changed by the third adjuster 86. As indicated by S2 in FIG. 10, the rotary drive speed of the carp 28 in the range set between the wind direction plate control upper limit value (Th) and the wind direction plate control lower limit value (Tl) is increased or decreased by a certain amount. By controlling, it is possible to cope with changes in the sorting state due to the amount of impurities in the object to be processed and the difference in moisture content. The rotational speed of the carp 28 when it deviates from the range from the wind direction plate control upper limit value (Th) to the wind direction plate control lower limit value (Tl) is a characteristic that is increased or decreased by a certain amount by adjustment by the third adjuster 86 (in FIG. 10). S3).
(Feed chain drive speed control)
In addition, the feed chain 10 is also configured to drive at a variable speed according to the detection value of the layer thickness sensor 50. The feed rate is increased as the layer thickness detected by the layer thickness sensor 50 increases, and the speed decreases as the layer thickness decreases. To drive. When the feed chain 10 is driven to increase or decrease the speed according to the traveling speed of the aircraft as in the past, there is a problem that the threshing process cannot be performed at an appropriate conveyance speed depending on whether the growth status of the cereals is good or bad. When it is configured to increase / decrease and drive according to the layer thickness as in the example, it can be conveyed according to the amount of the object to be processed, and the efficiency of threshing selection can be improved. When the feed chain 10 is driven at an increased speed, the time required for the cereal to pass through the handling chamber 11 is shortened, and the amount of the workpiece that leaks downward from the handling chamber 11 is reduced. When the feed chain 10 is driven at a reduced speed, the stagnation time in the handling chamber 11 becomes longer, so that a sufficient threshing process can be performed, and the amount of workpieces increases. Therefore, regardless of the traveling speed of the machine body, the amount of workpieces on the swing sorting shelf 21 converges to a certain range, and the amount of workpieces suitable for threshing sorting can be maintained regardless of the working state.
(Determining whether the layer thickness is normal or abnormal)
As the traveling speed of the machine increases, the amount of cereal supplied to the threshing machine increases, so the layer thickness on the rocking sorting shelf 21 detected by the layer thickness sensor 50 is approximately proportional to the traveling speed of the aircraft. To increase. (V in FIG. 15) However, under a working condition in which a large amount of sawdust is generated, such as when there are many green leaves, the sorting of the workpieces on the swing sorting shelf 21 deteriorates, and the majority of the second grain basket 33 Or splattered from the third exit 38. Therefore, the second reduced product increases and the layer thickness becomes abnormally thick. That is, the relationship between the layer thickness and the traveling speed deviates greatly from the proportional relationship, and the layer thickness is thick with respect to the traveling speed. (Uo in FIG. 15)
In such a case, the trunnion shaft rotating motor 87a is used to shift the trunnion shaft 87 of the hydrostatic continuously variable transmission 72, thereby reducing the traveling speed and reducing the amount of workpieces.

  On the other hand, in working conditions such as wet materials that contain a lot of moisture, the sheaves 23 and 24 are likely to be clogged, the second reduced product is abnormally reduced, and the layer thickness is thin with respect to the traveling speed. Become. (Us in FIG. 15) In this case, the operator is warned by the buzzer 74 or the like.

It is preferable to allow the range of speed reduction and warning to be changed to the type of target crop.
(Layer thickness sensor)
The layer thickness sensor 50 only needs to be able to detect the amount of the object to be processed on the swing sorting shelf 21, but in this embodiment, in front of the swing sorting shelf 21, above the transfer shelf 22, the front portion of the transfer shelf 22. To the upper side of the first sheave 23 so as to be adjacent to the gathering plate 67.

  The layer thickness sensor 50 is supported by the sensor support member 69 that is passed between the second processing chamber 14a of the second processing chamber 14 and the partition wall 68 that partitions the second processing chamber 14 and the dust processing chamber 16. The sensor 50 is configured to suspend and support the actuator 70 on a substantially horizontal axis orthogonal to the approach plate 67 and detect the rotation angle of the actuator 70. The front side of the actuator 70, which is the upper side in the transfer direction of the swing sorting shelf 21, has an arcuate curved surface.

On the transfer shelf 22, the grain leaked from the handling chamber 11 and the second reduced product released from the second reduction port 14b are mixed, and in particular, the second reduced product is the second reduction port 14b. Is provided at a position deviated to one side of the transfer shelf 22, and tends to be transferred rearward while being biased toward the second reducing port 14 b side. A gathering plate 67 is provided, and the second reduced product moves rearward along the gathering plate 67. For this reason, the actuator 70 can be configured to rotate along the longitudinal direction of the gathering plate 67 so that the workpiece amount layer thickness on the transfer shelf can be accurately detected, and the front side has an arcuate shape. It operates smoothly with reduced contact resistance with the material to be processed.
(Rotation of wind direction plate of No.2 Kara)
FIG. 12 shows another embodiment of the selection unit 3b. In the above-described embodiment, a second tang 75 is provided between the first shelf 32 in the front-rear direction and the second grain culm 33, and a third wind direction plate 76 is provided in the air blowing direction. The difference is that the two wind direction plates 30 are connected by the cooperation mechanism 77.

  The linkage mechanism 77 includes a balance arm 77b attached to the rotating shaft of the motor 77a and wires 77c and 77d connected to both ends thereof. The first wind direction plate 29, the second wind direction plate 30, and the third wind direction plate 76 are one of them. When the angle is changed to a gentle inclination, the other becomes a steep inclination.

When the layer thickness sensor 50 detects a state where the layer thickness is thin, the third wind direction plate 76 assumes a gentle inclination posture, and restricts the blowing of air to the vicinity of the start end portion of the upper Strollac 25.
In the case where the layer thickness is thick, the third wind direction plate 76 is set to a steeply inclined posture so as to follow the shelf plate 32 first, and the selected wind is blown to the strola rack 25.

  With this configuration, when the layer thickness is thin, the amount of air blown forward to the Strollac 25 is limited to prevent the grains from scattering outside the machine, and when the layer thickness is thick, the waste on the Strollac 25 is removed. It is discharged out of the machine, and the recovery of the grain at the second cereal basket 33 can be promoted.

The second tang 75 may be provided with a speed change mechanism or driven by an electric motor so that the rotation speed can be arbitrarily changed. In particular, the speed increase according to the increase in the detection value of the layer thickness sensor 50. It is good to do. Thereby, work condition adaptability can be improved.
(Change sheave inclination angle)
FIG. 13 shows the first sheave 79 and the second sheave 80 inserted in the middle sheave 78 fixed to the swing sorting shelf 21, and the rear side of the first sheave 79 and the second sheave 80 is pivoted up and down around the pivot shafts 79a and 80a. It is configured to be freely supported and to be rotated by the linkage mechanism 81 in conjunction with the change in the inclination posture of the first wind direction plate 29 and the second wind direction plate 30. The interlock mechanism 81 has a balance arm 77b rotated by a motor 81a and wires 77c and 77d connected to both ends thereof, and the first sheave 79 and the second sheave 80 are gradually inclined as the inclination angle of the wind direction plates 29 and 30 is increased. Rotate within the range of the inclined posture from the substantially horizontal posture.

  As the first sheave 29 and the second sheave 30 increase in the rearward inclination angle, the distance between the sheave plates in plan view increases, and the object to be processed on the sheave stagnate, so that the leakage rate of the object to be processed increases. To rise. As the slope becomes gentler, the rearward transfer of the object to be processed is promoted, and the object layer thickness on the swing sorting shelf 21 is made uniform. Each sheave 29, 30 is provided with a sheave cleaner 26.

3a Threshing section 3b Sorting section 10 Feed chain 12 Handling cylinder 21 Oscillating sorting shelf 28 Kara 29 First wind direction plate 30 Second wind direction plate 30b Air channel upper side end 31 First grain collection basket 33 Second grain collection basket 37 Air blow Mouth 50 Layer thickness sensor 59 Interlocking mechanism 75 Second tang 76 Third wind direction plate 84 First adjustment tool 85 Second adjustment tool 86 Third adjustment tool 89 Second reduction device 90 Sorting control device Th Wind direction plate control upper limit value Tl Wind direction plate Control lower limit

Claims (9)

A sorting section (3b) is provided below the threshing section (3a) provided with the handling cylinder (12), and the workpiece leaked from the threshing section (3a) is rocked and transferred to the sorting section (3b). A swing sorting shelf (21) for sorting while being provided, and a Kara (28) for blowing the sorting wind from a blower opening (37) provided on the rear side of the swing sorting shelf (21) and swinging The first cereal basket (31) that collects the first thing that leaks from the sorting shelf (21) and the second cereal basket (33) that collects the second thing that leaks from the swing sorting shelf (21) Are provided in order from the upper side in the transfer direction of the object to be processed on the swing sorting shelf (21),
The blower port (37) is provided with an upper first wind direction plate (29) and a second wind direction plate (30) in the middle in the vertical direction, and the first wind direction plate (29) and the second wind direction plate (30). The inclined posture of the first wind direction plate (29) and the second wind direction plate (30) is changed in conjunction with each other within the posture change range in which the lower side portion of the selected wind blowing direction is higher than the upper side portion. ,
A layer thickness sensor (50) for detecting a layer thickness of an object to be processed on the swing sorting shelf (21) is provided at the front of the swing sorting shelf (21),
As the layer thickness detected by the layer thickness sensor (50) increases, the posture of the first wind direction plate (29) and the second wind direction plate (30) is changed to a gentle inclination posture, and the layer thickness sensor (50) As the detected layer thickness decreases, the first wind direction plate (29) and the second wind direction plate (30) are changed to steep inclination postures, and the layer thickness detected by the layer thickness sensor (50) When it deviates from the range set between the plate control upper limit value (Th) and the wind direction plate control lower limit value (Tl), the postures of the first wind direction plate (29) and the second wind direction plate (30) are changed. A threshing apparatus comprising a selection control device (90) for maintaining a maximum inclination posture or a minimum inclination posture.   The upper part of the first wind direction plate (29) on the upper side of the selected wind blowing direction is pivotally supported so that the intermediate part of the second wind direction plate (30) in the selected wind blowing direction can be turned up and down. The threshing device according to claim 1, further comprising an interlocking mechanism (59) that pivotally supports and pivots the first wind direction plate (29) and the second wind direction plate (30) up and down.   A second reduction device (89) is provided for returning the second item that has fallen on the second cereal basket (33) to the front of the swing sorting shelf (21), and the second wind direction plate (30) is inclined to the maximum. In this state, the upper end (30b) of the second wind direction plate (30) in the selected wind blowing direction abuts or approaches the bottom surface of the blowing port (37), and the second wind direction plate (30). The threshing apparatus according to claim 1 or 2, characterized in that the lower air path is narrower.   The threshing according to claim 1, 2 or 3, further comprising a first adjuster (84) for changing the wind direction plate control upper limit value (Th) and the wind direction plate control lower limit value (Tl). apparatus.   The inclination of the first wind direction plate (29) and the second wind direction plate (30) at the wind direction plate control upper limit value (Th) and the wind direction plate control lower limit value (Tl) can be changed by the second adjuster (85). The threshing apparatus according to claim 1, claim 2, claim 3, or claim 4, wherein the threshing apparatus is configured.   The rotational speed of the tang (28) is configured to be freely changeable, and the detected value of the layer thickness sensor (50) ranges from the wind direction plate control upper limit value (Th) to the wind direction plate control lower limit value (Tl). ) Is kept constant, and the layer pressure sensor is in a range where the detection value of the layer thickness sensor (50) is larger than the wind direction plate control upper limit value (Th) and smaller than the wind direction plate control lower limit value (Tl). The control according to claim 1, claim 2, claim 3, claim 4, or claim 5, wherein control is performed to increase the rotational speed of the red pepper (28) as the detected value of (50) increases. Threshing device.   The third adjustment tool (86) for changing the rotational speed of the red pepper (28) in the range from the wind direction plate control upper limit value (Th) to the wind direction plate control lower limit value (Tl) is provided. 6. The threshing device according to 6.   A feed chain (10) is provided on one side of the threshing part (3a) to sandwich and convey the cereal, and the feed chain (10) is driven at a higher speed as the detection value of the layer thickness sensor (50) is larger. The threshing apparatus according to any one of claims 1 to 7, wherein   A second tang (75) is provided between the first cereal mash (31) and the second cereal mash (33), and the angle of the second tang (75) can be changed to the lower position in the sorting air blowing direction. Three wind direction plates (76) are provided, and the third wind direction plate (76) is moved to a position closer to the workpiece transfer direction of the swing sorting shelf (21) as the detection value of the layer thickness sensor (50) is larger. The posture is changed to a steeply inclined posture that blows air, and the posture is changed to a gently inclined posture that blows air to the lower part of the swing sorting shelf (21) in the workpiece transfer direction as the detection value of the layer thickness sensor (50) decreases. The threshing apparatus according to any one of claims 1 to 8, wherein the threshing apparatus is configured.

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