JP2006288235A - Axial-flow threshing apparatus - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide an axial-flow threshing apparatus in which a separatory section acting to catch a to-be-treated object dropped via a receiving mesh with a separatory case to conduct a swing winnowing treatment thereof is arranged under a threshing chamber axially supported with axial-flow threshing cylinders longitudinally, ensuring the shredding treatment of unloaded straw waste to be conducted well with high grain-retrieving efficiency. <P>SOLUTION: The separatory case 20 is equipped with a rough-separatory chaff sieve 33 for receiving a to-be-treated object dropped via the receiving mesh 18 and a fine-separatory grain sieve 35 for receiving a to-be-treated product dropped via the rough-separatory chaff sieve 33. An unloading chaff sieve 37 is arranged at a position above behind the separatory case 20, wherein the rear end of the unloading chaff sieve 37 is situated higher than the conveyance level of the rough-separatory chaff sieve 33 so as to face on the dust discharge port 23 at the rear end of the separatory section. <P>COPYRIGHT: (C)2007,JPO&INPIT

Description

  The present invention relates to an axial flow type threshing apparatus in which a sorting unit is provided below a handling chamber that pivotally supports an axial flow type handling cylinder in the front and rear directions, and a sorting unit that performs a swaying wind sorting process on a treated material that has leaked the receiving net in a sorting case. About.

  As the structure of the sorting unit of the axial flow type threshing device, for example, as disclosed in Patent Document 1, the processed material leaked from the front part of the receiving net is rocked and transferred backward to the front part of the sorting case. A rough sorting chaff sheave that screens the corrugated gren pan, the processing product that has reached the end of the gren pan, and the processing product that has leaked from the front and rear intermediate parts of the receiving net while swinging back and forth. Grain sieve for fine sorting that sifts and sorts the processed material that has been lowered, the processed material that has reached the end of the chaffed sheave for rough sorting, and the processed material that has fallen from the rear of the receiving net is oscillated backward and entangled with the processed material. Equipped with a rear chaff sheave that sifts and sorts processed products that have been loosened by the Strollac and dropped, processed products that have reached the end of the Glen sieve, etc. It is known.

JP-A-8-103148

  In the sorting part of the above structure, in order to deliver and transfer the straw scraps that have not leaked by the glenshave to the rear chaff sheave, the front end of the rear chaff sheave is brought close to the terminal end of the glenshave, The rear chaff sheave is arranged with a gentle slope so that it is connected to the conveying surface in a substantially straight line. For this reason, the processed material transported by the rear chaff sheave with a gentle slope is transported smoothly with less transport resistance, but on the other hand, the residence time at the rear chaff sheave is shortened and the grains mixed in the straw scraps fall. It becomes easy to be sent to the dust outlet without being collected.

  In addition, since the rear chaff sheave is arranged in a loosely inclined posture, the end position of the rear chaff sheave becomes low, and the straw scraps conveyed by the rear chaff sheave are discharged from the low position of the dust outlet. For this reason, when a shredding device such as a rotary chopper is installed behind the dust outlet to increase the spraying performance, the straw scraps supplied to the rotary chopper from a position where the dust outlet is low are sufficiently shredded. It becomes easy to go through a short circuit without receiving.

  The present invention has been made paying attention to such points, and has as its main purpose to enable high grain recovery efficiency and good shredding of straw scraps. .

In the first aspect of the present invention, a sorting unit is provided below a handling chamber that supports an axial flow type handling cylinder back and forth to receive a processed material leaked from the receiving net by a sorting case and perform a swaying wind selection process. In an axial flow type threshing device,
The sorting case is provided with a rough sorting chaff sheave that receives the processed material leaked from the receiving network, and a fine sieve for receiving the processed material that has leaked the rough sorting chaff sheave, and the rear upper portion of the sorting case. A discharge chaff sheave for receiving the processed material from the rough sorting chaff sheave is arranged, and the rear end of the discharge chaff sheave is positioned higher than the conveying surface of the rough sorting chaff sheave and is placed at the dust outlet at the rear end of the sorting section. It is characterized by that.

  According to the above configuration, the conveying surface of the coarse sorting chaff sheave has a relatively tight inclination angle, and the residence time of the processed material in the coarse sorting chaff sheave becomes long, and the grains that are tightly entangled with straw scraps. The chance that the grains are separated and recovered during the oscillating transfer is increased.

  Therefore, according to 1st invention, it can suppress that a grain is discharged | emitted with straw scraps, and can perform the threshing selection process with high grain recovery efficiency.

According to a second invention, in the first invention,
The rear end of the discharge chaff sheave is set at substantially the same height as the upper end of the sorting case.

  According to the above configuration, the rear end of the discharge chaff sheave can be arranged as high as possible, and the first invention can be suitably implemented.

According to a third invention, in the first or second invention,
A Strollac for receiving a processed material from the rear end of the rough sorting chaff sheave is disposed behind the rough sorting chaff sheave, and a front portion of the discharge chaff sheave is inserted below the Strollack.

  According to the above configuration, even if there is a lump that is strongly entangled in the processed material that has reached the rear end of the rough sorting chaff sheave, it can be unraveled and transferred to the discharging chaff sheave during the oscillating transfer by the Strollac. Separation and recovery of grains in the chaff sheave can be performed more efficiently.

A fourth invention is the invention according to any one of the first to third inventions,
A rotating chopper that shreds the discharged straw waste is disposed behind the dust outlet.

  According to the above configuration, the straw scraps sent by the discharge chaff sheave can be sent to the dust outlet from a high position and put into the rotary chopper, and the rotary chopper is located at a high position to improve the spraying performance of shredded straw scrap Even if it is deployed in the wall, sufficient shredding action can be given to the straw scraps by throwing in from a high position, and good shredding without uncut residue can be performed.

  The whole side surface of the combine which mounts the axial-flow threshing apparatus which concerns on this invention is shown by FIG. 1, and the whole plane is shown by FIG. This combine is a grain tank provided with a driving unit 2 having a cabin on a traveling machine body 2 having a pair of left and right crawler traveling devices 1, an axial flow type threshing device 4 configured in a full throwing type, and an unloader 5. 6 is mounted, and a feeder 7 for conveying the harvested crop is provided at the front part of the axial flow type threshing device 4 so as to be swingable up and down around the fulcrum p. It has the structure where the cutting part 8 which has a cutting width was connected.

  The mowing unit 8 is provided with a clipper type mowing device 9 and an auger 10 for laterally feeding the harvested crop and feeding it to the starting end of the feeder 7, and is installed between the feeder 7 and the traveling machine body 2. The cutting portion 8 is swung up and down integrally with the feeder 7 by the expansion and contraction operation of the hydraulic cylinder 11. In addition, a scraping reel 12 for scraping the planted crops backward is provided above the front part of the cutting unit 8.

  As shown in FIG. 3, in the upper half part of the axial flow type threshing device 4, there is provided a handling chamber 17 in which a handling cylinder 16 in which handling teeth 15 are installed in a spiral shape is supported in the horizontal direction. A receiving net (concave) 18 is provided along the lower side of the handling chamber 17, and the processed material leaked from the receiving net 18 is placed below the handling chamber 17 in the first (fine), second, In addition, a sorting unit 19 that sorts into dust is provided.

  The sorting unit 19 is equipped with a sorting case 20 that screens the processed material leaked from the receiving net 18 while swinging and moving backward, and the front end of the sorting unit 19 faces the sorting case 20. A Kara 21 for supplying the sorting air is provided, and a large straw waste discharged from a dust feed port 22 formed at a lower end of the rear end of the handling chamber 17 at the rear end of the axial flow type threshing device 4. A rotating chopper 24 that shreds the straw scraps discharged from the dust outlet 23 formed at the rear end of the sorting unit 19 is provided.

  A first collecting unit 25 and a second collecting unit 26 are respectively provided in the lower portion of the sorting unit 19. The collected first item is conveyed by a lateral feed screw 27 and carried out of the apparatus, and then a lifting device. 28. The second product collected and fed to the grain tank 6 is transported by the lateral feed screw 29 and transported out of the apparatus, and then transported by the reducing device 30 to the front portion of the sorting case 20. To be reduced.

  FIG. 4 shows the detailed structure of the sorting case 20. This sorting case 20 is resin-molded, and the one used in the sorting section of the self-demolding threshing device is remodeled to some extent and used. Further, the front part of the sorting case 20 reaches the end of the corrugated pan 31 and the corrugated pan 31 for swinging and transferring the processed material leaked from the front part of the receiving net 18 and the second reduced product. The sieved wire 32 for loosening the processed material, the processed material reaching the rear end of the sieve wire 32, and the processed material leaking from the front and rear intermediate portions of the receiving net 18 are subjected to sieve sorting while being swayed and transferred backward. From the rear part of the screen 18 and the grain 18 for fine sorting, the grain pan 34 and the grain sieve 35 for fine selection for screening the processed product leaked from the sieve line 32 and the rough sorting chaff sheave 33 The Strollac 36 that loosens the entanglement of the processed material while swinging and transporting the processed material that has fallen back, and the processed material that has fallen from the Strollack 36 is swung and transported backward. Discharging chaff sieve 37 for feeding the sieving to remaining straw waste such a dust-exhaust port 23 is equipped respectively.

  The grain pan 31 performs so-called specific gravity difference sorting, in which the processed product is divided into upper and lower layers according to the specific gravity difference during the rocking transfer, and grains having a higher specific gravity are used as the lower layer and straw scraps having a lower specific gravity are used as the upper layer. It divides into and is comprised so that it may send out to the following sieve line 32. FIG. In addition, a width-adjusting rib 38 is inclined on the upper surface of the Glen pan 31, and the processed material that tends to be shifted to the right side of the machine body due to the second reduction supply or the like is moved backward over the entire selection width. It is designed to be distributed.

  When the processed product sorted into the upper and lower two layers by the grain pan 31 moves onto the sieve line 32 in this way, the lower grains fall immediately and are supplied to the grain pan 34 and the grain sieve 35, and from the sieve line 32. The upper straw scraps that have not fallen and the grains that have fallen into them are delivered to the rough sorting chaff sheave 33. Therefore, most of the grains generated in a large amount in the front part of the handling chamber 17 are sent to the grain sieve 35 through the sieving line 32 at an early stage, and the highly accurate sorting without the grain mixing into the second recovery unit 26 is performed. Is done efficiently.

  As shown in FIG. 5, the rough sorting chaff sheave 33 is configured by arranging a large number of lip plates 33 a back and forth at a predetermined interval, and is arranged one step lower than the Glen pan 31 and the sieve line 32. Each lip plate 33a is supported so as to be able to swing back and forth about a fulcrum a at its upper end, and the lower end of each lip plate 33a is pivotally connected to a support frame 33b which is long in the front and rear directions. The angles of all the lip plates 33a are changed in conjunction with the forward / backward movement of the frame 33b. That is, when the support frame 33b moves forward, the angle of each lip plate 33a becomes loose and the chaff opening decreases, and conversely, when the support frame 33b moves backward, the angle of each lip plate 33a becomes tight and the chaff is opened. The degree increases. Although the detailed description of the structure is omitted, the chaff sheave 33 is spring-biased in the direction of decreasing the chaff opening, and as the amount of processed material leaking from the receiving net 18 increases, the chaff sheave 33 increases. The plate 33a is swung downward due to the weight of the processed material to increase the opening of the chaff, the leakage of the processed material is promoted, and the oscillating transfer without the retention of the processed material on the chaff sheave 33 is performed. As the amount of processed material leaking from the receiving net 18 decreases, the chaff plate 33a is swung upward by the spring biasing force, the chaff opening is reduced, and sorting with less leakage of straw scraps is performed. The sorting accuracy can be improved.

  The Strollac 36 is configured by arranging a plurality of rear-facing cantilevered rack plates 36a having an upper side formed in a sawtooth shape in parallel on the left and right sides. By loosening while sending the lump backward, the grains entangled in this are separated and recovered. The Strollac 36 is arranged in a rearwardly inclined posture so that the front end portion thereof is disposed at substantially the same height as the conveying surface of the rough sorting chaff sheave 33 and the rear end thereof is positioned near the upper end of the sorting case 20. Has been.

  Further, the discharge chaff sheave 37 is configured by arranging a plurality of lip plates 37a at the front and rear with a predetermined interval, and the inclination angle of the lip plate 37a so as to guide the sorting air from the Kara 21 upward and rearward. Is fixed at a predetermined angle. Further, the discharge chaff sheave 37 is arranged in a rearwardly rising and inclined posture substantially parallel to the Strollac 36, and its front half portion is placed under the Strollack 36 and its rear end is the upper end of the sorting case 20. The straw scraps that are arranged nearby and reach the end of the conveyance are sent out to the dust outlet 23 at a high position.

  [Another Example]

  (1) The Strollac 36 may be omitted, and the processed material may be directly delivered from the rough sorting chaff sheave 33 to the discharge chaff sheave 37.

  (2) The angle of the lip plate 37a in the discharge chaff sheave 37 can be artificially adjusted so that the dust discharge function can be adjusted.

Combine side view Overall plan view of combine Longitudinal side view of threshing device Top view of sorting case Longitudinal side view with part of the sorting case enlarged

Explanation of symbols

16 Handling cylinder 17 Handling chamber 18 Receiving net 19 Sorting part 20 Sorting case 23 Dust outlet 24 Rotating chopper 33 Coarse chaff sheave 35 Glen sheave 36 Strollac 37 Chaff sheave for discharge

Claims (4)

In an axial flow type threshing device in which a sorting unit that receives a processed material leaked from a receiving net in a sorting case and performs a swaying wind selection process is provided below a handling chamber that pivotally supports an axial flow type barrel. ,
The sorting case is provided with a rough sorting chaff sheave that receives the processed material leaked from the receiving network, and a fine sieve for receiving the processed material that has leaked the rough sorting chaff sheave, and the rear upper portion of the sorting case. A discharge chaff sheave for receiving the processed material from the rough sorting chaff sheave is arranged, and the rear end of the discharge chaff sheave is positioned higher than the conveying surface of the rough sorting chaff sheave and is placed at the dust outlet at the rear end of the sorting section. An axial flow type threshing apparatus characterized by that.   The axial flow type threshing apparatus according to claim 1, wherein a rear end of the discharge chaff sheave is set at substantially the same height as an upper end of the sorting case.   A stroller for receiving a processed material from a rear end of the rough sorting chaff sheave is disposed behind the rough sorting chaff sheave, and a front portion of the discharging chaff sheave is inserted under the stroller. The axial threshing apparatus as described.   The axial flow type threshing device according to any one of claims 1 to 3, wherein a rotary chopper that shreds the discharged straw scraps is disposed behind the dust outlet.

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