JP6715890B2 - All culm type combine - Google Patents

Description

The present invention relates to an all culm throw type combine harvester.

As an all-cullet throw-in type combine, it is common to equip the handling chamber with a handling cylinder configured to have spiral handling teeth on the outer peripheral portion (see, for example, Patent Document 1).

JP, 11-266666, A

In other words, in the all culm throw type combine, the threshing device is not equipped with a feed chain or other transport device for transporting the harvested culm unlike the self-removing combine, so that the above-mentioned handling cylinder is equipped. As a result, the threshing material is configured to be screw-conveyed toward the lower side in the threshing processing direction while the threshing processing is being performed along with the rotation of the handling cylinder.

However, if a spiral-shaped handle tooth is provided on the outer peripheral portion of the handle cylinder as described above, the threshing action of the handle tooth against the threshing treated material due to hitting or combing becomes insufficient, and the grain becomes a single grain. Since it becomes difficult to promote the above, there is room for improvement in improving threshing performance and grain collection efficiency.

It is an object of the present invention to provide an all-culm input type combine capable of improving threshing performance and grain recovery efficiency.

In order to achieve the above object, the present invention proposes an all culm throw type combine having the following configuration.
The body frame is equipped with a reaping and conveying device and a threshing device,
The harvesting and conveying device is provided with a feeder that conveys a harvested culm toward the threshing device,
The threshing device is rotationally driven with a handling chamber formed in the upper part of the threshing device, and a spindle provided inside the handling chamber and installed along the front-rear direction that is the conveyance direction of the harvested culm as a fulcrum. Is provided with
The handling cylinder is provided with a scraping section that constitutes a front part of the handling cylinder, and a handling processing section that configures a rear part of the handling cylinder,
The handling unit has a plurality of handling barrel frames supported so as to be lined up at intervals in the circumferential direction of the handling barrel, and a plurality of handling teeth protruding outward from the handling barrel frame. ,
The plurality of handling barrel frames and the plurality of handling teeth function as a handling processing member that acts on the threshing material,
The handling room is provided with a top plate that covers the upper side of the handling barrel,
A plurality of dust transfer valves are provided inside the top plate so as to be lined up at intervals in the front-rear direction, and convey the threshed material conveyed to the upper part of the handling chamber as the handling barrel rotates. It is configured to guide toward the lower side of the direction,
In a plan view, the plurality of dust-sending valves is a handling process that guides a threshing-treated product toward a lower side in the transport direction along with rotation of the handling process unit at a portion corresponding to the handling process unit on the top plate. Equipped with a dust control valve
When seen in a plan view, both ends of the dust handling valve for the handling processing unit project outside the handling barrel frame when located at the outermost side in the left-right direction orthogonal to the front-rear direction. Type combine.

With this configuration, it is possible to provide an all-culm input type combine that can improve threshing performance and grain collection efficiency.

Hereinafter, more preferred embodiments having the above configuration will be listed.

-The handling tooth is configured as a linear rod-shaped member,
In a plan view, the dust handling valve for the handling processing unit overlaps with the handling teeth protruding from the handling barrel frame when located at the outermost side in the left-right direction.

The interval between the dust handling valves for the handling processing unit is set to be larger than the spacing between the handling teeth that are adjacent to each other in the front-rear direction in the handling barrel frame.

The scraping portion is provided with a frusto-conical base portion and an outer periphery of the base portion, and the harvested culm supplied and conveyed to the handling chamber is moved backward with rotation of the handling barrel around the spindle. With spiral teeth that scrape and convey toward
When seen in a plan view, the plurality of dust-sending valves are provided in a portion of the top plate corresponding to the scraping portion for guiding the cut culm toward the lower side in the transport direction as the scraping portion rotates. Equipped with a dust control valve
In a plan view, the dust trapping valve for the scraping portion overlaps with the spiral tooth located outside.
When viewed in a plan view, the dust trapping valve for the sweeping portion has a portion corresponding to the sweeping portion on the top plate in a state where the portion on the upper side in the transport direction is allowed to enter the sweeping portion side, and the ceiling. It is provided over a portion of the plate corresponding to the handling unit.

-The support shaft is composed of a rod-shaped member extending from the front part of the scraping part to the rear part of the handling part,
A first support plate connected to a rear portion of the scraping portion and supporting a front portion of the handling barrel frame is provided at a front portion of the support shaft,
A third support plate for supporting the rear part of the handling barrel frame is provided at the rear part of the support shaft,
Each of the handling body frames is composed of a single rod-shaped member extending from the front to the rear of the handling processing unit ,
Wherein each of扱歯supported only a single said threshing drum frame, wherein the thresher frame, while supporting the扱歯, detachably from the first support plate and the front Symbol third supporting plate It is configured.

· The support shaft is in a state of penetrating the first support plate and the front Symbol third supporting plate is rotatably spanned over the front and rear walls of the threshing chamber,
The handling barrel frame is provided between the first support plate and the third support plate ,
Before SL thresher frame in a state where the support shaft for said front wall and the rear wall of the threshing chamber is laid, and is configured to be detachable.
The scraping portion is provided with a frusto-conical base portion and an outer periphery of the base portion, and the harvested culm supplied and conveyed to the handling chamber is moved backward with rotation of the handling barrel around the spindle. With spiral teeth that scrape and convey toward
Among the plurality of handle teeth, a handle tooth located on the most upstream side in the transport direction is provided with a gap between the handle portion and the rear end of the base portion, and the handle barrel frame and the first handle tooth are provided at a position corresponding to this gap. 1. A connection part between the support plate and
Among the plurality of handle teeth, the handle tooth located on the lowermost side in the transport direction is provided with a space from the rear end of the handle body frame, and the handle body frame is provided at a position corresponding to this interval. A connection part between the third support plate and the third support plate is provided.

Overall side view of all culm throw type combine Overall plan view of all culm input type combine Vertical side view of threshing equipment Front view, partly in section, showing the configuration of the front end of the threshing device. Partial longitudinal sectional front view showing the configuration of the front and rear intermediate portions of the threshing device A plan view of essential parts showing a configuration of a handling cylinder, a conveyance assisting member, and the like. A cross-sectional plan view of the main part showing the structure of the handling cylinder Rear view of the handle barrel, showing the configuration of the handle barrel A cross-sectional plan view of essential parts showing another configuration of the handling cylinder A vertical sectional front view of the main part showing the configuration of the top plate. Cross-sectional plan view of the main part showing the length and arrangement of the dust delivery valve The top view of the principal part which shows the structure of a conveyance auxiliary member. A vertical cross-sectional side view of essential parts showing a configuration of a conveyance assisting member Perspective view of essential parts showing structure of receiving net Perspective view of essential parts showing structure of chaff sheave

Fig. 1 shows the whole side view of a whole culm-type combine harvester for harvesting rice and wheat. This combine harvester has a vehicle body frame 1 made of square pipe steel material, an engine 2 and a non-illustrated one. A gearbox and the like are mounted, and a pair of left and right crawler type traveling devices 3 driven by power from the engine 2 transmitted through the gearbox and the like are mounted on a lower portion of the bodyframe 1, and a front portion of the bodyframe 1 is equipped. In addition, a cutting and conveying device 4 for cutting the planted culms to be harvested and conveying them backward
Is connected so as to be able to move up and down, and the left half of the vehicle body frame 1 is subjected to threshing treatment on the harvested culm from the harvesting and conveying device 4, and sorting treatment is performed on the processed products obtained by the threshing treatment. The threshing device 5 for carrying out the above is mounted, and in the right half part of the vehicle body frame 1, the grain from the threshing device 5 is stored, and the bagging device 6 that enables the bagging of the stored grain is mounted, A boarding operation unit 7 is formed at a location in front of the bagging device 6 in the vehicle body frame 1.

The left and right crawler-type traveling devices 3 are driven at a constant speed based on the swinging operation of the control lever 8 provided in the boarding operation unit 7 in the left-right direction, so that a straight traveling state appears, and they are differentially driven. By doing so, the turning state is revealed.

As shown in FIG. 1 and FIG. 2, in the cutting and conveying device 4, the dividers 9 installed at the left and right ends of the front part of the harvesting and transporting device 4 set the planted culms to be harvested and the harvested culms to be harvested. The planting culm and the planted culm of the harvesting target are squeezed by the dividers 9 on the left and right, and the rotary reel 10 arranged above the front part of the stalk of the harvested plant rakes them backward and equips them at the bottom. The clipper-shaped cutting mechanism 11 cuts the plant base side of the planted grain culm to be harvested, and the auger 12 is provided behind the cutting mechanism 11.
However, the planted grain culms (cutted grain culms) after cutting by the cutting mechanism 11 are gathered together at a predetermined position in the left-right direction, and are sent rearward at the predetermined position, and the threshing device 5 is discharged from the predetermined position.
The feeder 13, which is a transport conveyor extending over the front upper part of the above, is configured to convey the cut culm from the auger 12 toward the threshing device 5. Further, based on the swinging operation of the control lever 8 in the front-rear direction, a hydraulic lifting cylinder (not shown) installed over the body frame 1 and the feeder 13 expands and contracts, so that the threshing device 5 and the feeder 13 are extended. It is configured to swing up and down about a connection point with and as a fulcrum, and by the up and down swing, cutting height adjustment for changing the height position of the cutting mechanism 11 with respect to the planted grain culm can be performed.

As shown in FIGS. 3 to 5, a threshing device 5 includes a handling chamber 14 formed at an upper portion thereof, and a handling barrel 16 that rotates around a support shaft 15 extending in the front-rear direction and installed along the conveyance direction of the harvested culm as a fulcrum. And a receiving net 1 formed in a U shape in a front view, which covers the lower side of the handling barrel 16 from below, below the handling barrel 16.
7, a culm 18 is formed at the rear of the net 17, which is the lower end of the threshing device 5 in the threshing direction, and a swing sorting mechanism 19 is provided below the net 17 for swing sorting. The Karako 20 is arranged below the front of the mechanism 19, the No. 1 collecting part 21 is formed below the front side of the swing sorting mechanism 19, and the No. 2 collecting part 22 is formed below the rear side of the swing sorting mechanism 19. A discharge port 23 is formed at the rear of the swing selection mechanism 19, and a top plate 24 is provided to cover the upper side of the handling cylinder 16 from above.

The handling chamber 14 is defined by a receiving net 17 that covers the handling barrel 16, a top plate 24, and the like, a supply port 25 is formed in a lower portion of the front end thereof, and the rear end portion of the feeder 13 is connected to the supply port 25.
The whole cut grain culm conveyed by the feeder 13 is input and supplied from the supply port 25 as a threshing processed product.

The handling cylinder 16 has its support shaft 15 rotatably installed over the front wall 26 and the rear wall 27 of the threshing device 5, and the support shaft 15 is fulcrumed by the power from the engine 2 transmitted via the Kara sono 20 and the like. By being driven to rotate clockwise in front view, the threshing culm supplied to the handling room 14 is subjected to threshing treatment, and the threshing culm is threshed while promoting the singulation of the grain. The sheet is conveyed backward, which is the lower side of the direction.

The receiving net 17 is a concave receiving net formed in a lattice shape, receives the cutting grain culm supplied to the handling room 14, assists the threshing process of the handling barrel 16 with respect to the cutting grain culm, and obtains by the threshing process. The singulated grain, the grain with branch stem, or the culm generated in the threshing process is allowed to leak toward the lower swing sorting mechanism 19, while the swing sorting mechanism for the shed grain stem etc. Prevent leakage to 19.

The swing selection mechanism 19 includes a Glen pan 30, a chaff sheave 31, and a straw rack 3 for rough selection on an upper portion of a sheave case 29 that is driven to swing in the front-rear direction by a cam type drive mechanism 28.
2 are arranged in that order from the front side of the sheave case 29, and a Glen pan 33 and a Glen sieve 34 for fine selection are arranged below the sheave case 29 in that order from the front side of the sheave case 29. Then, the sorted product leaked from the net 17 in the state where the singulated grain and the culm are mixed is received by the upper Glen pan 30, the chaff sheave 31, or the Straw rack 32, and the rough sorting process by the sieve selection is performed. The selected processed product that leaked from the chaff sheave 31 in a state in which the single-grained grains and the grains with branch stems coexisted are treated with the Glen Pan 3 at the bottom.
3 and Glen Sieve 34, and perform a fine sorting process by sieving and sorting, and the sorted product is a single grained grain as the first product and a grain with branch branches and shavings as the second product. Mixture and 3
Sort with dust such as shavings as a number.

The Karato 20 is driven by the power from the engine 2 transmitted through the belt-type transmission mechanism 35, and is rotationally driven around its supporting shaft 20A as a fulcrum to generate a sorting wind. By being supplied toward the sorted products leaked from the receiving net 17 and the sorted products sorted by the swing sorting mechanism 19 through the air passages R1 to R3, the wind force is applied to the sorted products. After the sorting process is performed, culms and the like having a small specific gravity are blown out from the sorted product, and the sorted products are conveyed toward the discharge port 23 on the lower side in the threshing process direction.

The No. 1 recovery unit 21 recovers the singulated grain that has leaked from the Glen sieve 34 of the rocking sorting mechanism 19 as the No. 1 grain in a state where dust such as straw dust is removed by the sorting wind from the Karato 20. Then, the collected No. 1 product is conveyed by the No. 1 screw 36 disposed in the left and right direction at the bottom thereof toward the lifting screw 37 (see FIG. 2) connected to the right end of the No. 1 screw 36.

The No. 2 recovery unit 22 is a mixture of grains and culm with branch stems that flowed from the rear end of the Glen sieve 34 without leaking from the Glen sieve 34 of the swing sorting mechanism 19 and the swing sorting mechanism 19. Collecting the mixed substances such as grain with stalk and culm that leaked from the Strawac 32 as the second product,
The collected No. 2 object is conveyed toward the No. 2 reduction mechanism 39 (see FIG. 2) connected to the right end of the No. 2 screw 38 by the No. 2 screw 38 arranged in the left and right directions at the bottom thereof.

The lifting screw 37 lifts the No. 1 product conveyed by the No. 1 screw 36 and supplies it to the grain tank 40 provided at the upper part of the bagging device 6 (see FIGS. 1 and 2 ). The No. 2 reduction mechanism 39 is provided with a reprocessing unit (not shown) for performing the threshing process again on the No. 2 product conveyed by the No. 2 screw 38, and the No. 2 product after the threshing process by the reprocessing unit is provided. It is pumped and returned to the swing selection mechanism 19 (see FIG. 2).

The discharge port 23 contains shredded grain culm that does not leak from the receiving net 17 and flows down from the culm port 18, and debris that has been sorted and conveyed to the rear of the swing sorting mechanism 19 by a sieve sorting process or a wind sorting process. Release it outside the vehicle.

As shown in FIGS. 3 to 8, the handling cylinder 16 includes a frustoconical scraping portion 41 provided at a front end portion thereof.
A handling processing unit 42 connected to the rear end of the scraping unit 41 is provided. Scraping part 41
The outer peripheral surface of the is integrally provided with two spiral teeth 43 for scraping and conveying the cut culm supplied from the supply port 25 toward the rear processing unit 42 when the handling cylinder 16 is rotated. ..

The handling unit 42 is integrally provided at the front end of the support shaft 15, a first support plate 44 integrally provided at the front and rear intermediate portions of the support shaft 15, and a rear end of the support shaft 15. Third
Six support pipes 46 and six circular pipe steel members supported by the support plates 44 to 46 in a front-back posture along the support shaft 15 so as to be arranged at regular intervals in the circumferential direction of the handling cylinder 16. Of the handling barrel frame (an example of a main body constituent member) 47, and each handling barrel frame 47 are arranged at a predetermined interval in the front-rear direction in a posture of protruding from the handling barrel frame 47 toward the outside of the handling barrel 16. The plurality of handle teeth 48 thus equipped are configured in a cage shape.

That is, the handling barrel 16 is arranged and arranged so that the plurality of handling teeth 48 protruding outwardly are arranged at predetermined intervals in the circumferential direction and the front-back direction of the handling processing unit 42, and the handling process is performed. The internal space S of the portion 42 communicates with the handling chamber 14 to allow the threshing processed material to enter the internal space S. As a result, when the rotation operation is performed, the threshing processed material around Internal space S
While stirring the threshing-treated products that have entered, the threshing-treated products are subjected to threshing treatment by hitting or combing the handling barrel frame 47 and the handling teeth 48.

Further, the internal space S of the handling processing unit 42 communicates with the handling chamber 14, so that even if a large amount of harvested culms are supplied to the handling chamber 14 as threshing products, the internal space of the handling processing unit 42 is increased. S can be effectively used as a processing space for threshing processing, and by this, retention of the threshing processed material in the processing space and saturation of the processing space can be avoided. As a result, the threshing processed product leaks from the receiving net 17 without sufficient threshing processing due to the retention of the threshing processed product or the saturation of the processing space, or the load required for the threshing processing increases and is treated. The transmission system for the torso 16 is damaged,
It is possible to avoid occurrence of inconvenience such as.

Then, when the handling barrel 16 is rotated, not only the plurality of handling teeth 48 but also the six handling barrel frames 47 forming the handling processing portion 42 of the handling barrel 16 act on the threshing processed material. It is possible to improve threshing performance and threshing efficiency.

Moreover, by the threshing process on the front side of the handling cylinder 16, many grains are singularized and leak from the net 17, so that the front and rear intermediate portions of the handling barrel 16 in which the amount of the threshing processed product decreases. The second support plate 45 blocks the flow of the threshing processed material in the inner space S of the handling cylinder 16 toward the lower side in the threshing processing direction, and guides the threshing processed material to the periphery of the handling cylinder 16 as the handling cylinder 16 rotates. Since the threshing caused by hitting or combing of the treating teeth 48 with respect to the threshed product and the leakage of the single-grained grain from the net 17 are promoted, the single-grained grain contained in the threshed product is obtained. Grain or ungrained culm 1
It is possible to prevent generation of No. 3 loss caused by being discharged through the internal space S of 6 through the threshing culm and the culm outlet 18 at the end on the lower side in the threshing process direction.

Further, when the handling cylinder 16 is rotated, the cutting culm that is scraped and conveyed by the action of the scraping unit 41 and the outside air sucked from the supply port 25 along with the rotation of the spiral teeth 43 is generated around the handling cylinder 16. It smoothly flows into the internal space S of the slaughter processing unit 42, whereby it is possible to prevent outflow of the dust and the like generated from the threshing process from the supply port 25 to the feeder 13 and to perform the threshing process product. It can be transported to the lower side of the threshing treatment direction more quickly.

In addition, the outside air sucked from the supply port 25 passes through the inside of the feeder 13 connected to the supply port 25, and the feeder 13 of the cutting and conveying device 4 equipped with the cutting mechanism 11, the auger 12, and the like. A carry-out port (not shown) and a supply port 25 for carrying out the collected grain culms formed in the reaping and collecting section
When the handling cylinder 16 is rotated, the suction action by the rotation of the spiral teeth 43 causes dust such as shavings generated in the mowing and collecting process at the mowing and collecting unit and the outside air to be communicated with the outside air. From the carry-out port of the mowing and collecting section through the internal space of the feeder 13 and the supply port 25, the handling cylinder 1
6 and the internal space S of the handling processing unit 42. As a result, it is possible to suppress the deposition and rise of culm and debris in the cutting and collecting section, and the poor conveyance of the harvested grain culm due to the deposit and deposition, and the deterioration of the work environment and visibility due to the rise. Can be suppressed.

Each of the support plates 44 to 46 has a circular shape centered on the support shaft 15, and the handling barrel frame 47 is bolted to the outer peripheral side thereof at positions equidistant from the support shaft 15.

That is, on the outer peripheral side of each of the support plates 44 to 46, the six handling barrel frames 47 are arranged in a state of being arranged at regular intervals in the circumferential direction, and the barrel diameter of the handling barrel 16 is increased. Therefore, it is possible to prevent the cut grain culm from being wound around the handling barrel 16.

Each handling barrel frame 47 has a normal posture in which the front-rear direction is aligned with the front-back direction of the handling barrel 16,
The support plates 44 to 46 are bolted so that the front-rear direction can be changed to an inverted posture in which the front-rear direction of the handle cylinder 16 is reversed, and the front-rear direction of the adjacent handle cylinder frames 47 is reversed. It is connected.

Each handling barrel frame 47 has a plurality of mounting holes 47A, 47 for mounting the handling teeth 48.
B are arranged in the front-rear direction at a constant pitch P, and the distance L1 from the front end of the handling barrel frame 47 to the center of the frontmost mounting hole 47A and the rear end of the handling barrel frame 47 to the last mounting hole 4 are set.
The holes are formed in a state in which the distance L2 to the center of 7A is different by a half pitch (=1/2P).

Each handling barrel frame 47 is connected to and supported by each of the support plates 44 to 46 in a state in which the front-back direction of the adjacent handling barrel frames is reversed, whereby the six handling barrel frames 47 have the same configuration. While adopting, the handle teeth 48 mounted on each of the handle barrel frames 47,
It can be positioned in a state of being displaced by a half pitch in the front-rear direction from the handle teeth 48 of the adjacent handle drum frames 47, and as a result, the handle for the threshing processed object can be processed without reducing the interval between the adjacent handle teeth 48. The striking interval of the teeth 48 can be reduced.

In other words, while reducing the cost by making the handling barrel frames 47 have the same configuration,
Further, the smaller the spacing between the adjacent handling teeth 48, the easier it is to invite, while effectively preventing clogging of the threshing processed product due to the entanglement of the grain culms in the threshing processed product with respect to the handling tooth 48, and to the threshing processed product. Threshing performance can be improved by increasing the number of times the handling teeth 48 are hit.

Further, by equipping each handling barrel frame 47 so that the orientation can be changed between the normal posture and the inverted posture,
If the wear of the handling teeth 48 located on the upper side in the threshing process direction is relatively easy to wear due to the large amount of threshing products, the orientation of each handling barrel frame 47 can be changed by long-term use. , The plurality of handling teeth 48 provided on each handling barrel frame 47 are replaced with the handling teeth 48 on the upper side in the threshing process direction, which is relatively easy to wear, and the handling tooth 48 on the lower side in the threshing process direction, which is less likely to wear. , The position can be changed all at once, so that the handling tooth 4 on the lower side in the threshing process direction with less wear can be obtained.
8 can be effectively used as the handling teeth 48 on the upper side in the threshing process direction in which the amount of the threshing process product is large.

Among the plurality of mounting holes 47A and 47B, four (two front and rear) mounting holes 47A located at the front and rear end portions of each handling body frame 47 are formed to have a smaller diameter than the mounting hole 47B located in the middle portion. ing.

Of the handle teeth 48, the handle teeth 48A attached by using the small-diameter mounting hole 47A is made of a stepped round bar steel material having a small-diameter portion 48a inserted into the mounting hole 47A, and its center is
A nut is detachably attached to the handling barrel frame 47 so as to be located on a line passing through the center of the support shaft 15 and the center of the handling barrel frame 47.

The handle tooth 48B attached using the attachment hole 47B in the middle portion is made of a stepless round bar steel material, and its center is located on a line passing through the center of the support shaft 15 and the center of the handle barrel frame 47. As described above, it is non-detachably welded to the barrel frame 47.

That is, since the handle teeth 48A located at the front and rear ends of the handle processing unit 42 are detachable, when the handle teeth 48A are significantly worn due to long-term use including changing the direction of the handle barrel frame 47. Can be easily replaced with a new handle tooth 48A.

On the lower side in the threshing process direction in which the amount of threshed culms is large, as shown in FIG.
When the handle teeth 48A located at the rear end of the handle 6 are thinned out, the handle teeth 48 at the rear end of the handle body 48
The interval of A becomes large, and the retention of the shattered culms due to being caught by the handling teeth 48A at the rear end of the shatter barrel can be effectively suppressed, and as a result, the discharge of the shattered culms from the discharge port 23. Can be promoted.

As shown in FIGS. 3 to 5, FIG. 10 and FIG. 11, the top plate 24 has a curved portion 24A that curves substantially along the rotation trajectory K of the treatment tooth tip, and a semi-circular shape positioned at both front and rear ends of the curved portion 24A. Vertical wall 24
B, a straight side edge 24C positioned on the left and right of the curved portion 24A, and the like.
It is possible to perform an open/close swing operation using a plurality of hinges 24D provided on the left side edge portion 24C as a fulcrum between a closed state in which the upper side of 6 is covered from above and an open state in which the upper side of the handling cylinder 16 is opened. Is configured to be. A plurality of bolts 24 for fixing the top plate 24 in a closed state are provided on the right side edge portion 24C.
E is provided.

On the inner surface of the curved portion 24A, a plurality of dust-sending valves 49 for guiding the threshing material conveyed to the upper part of the handling chamber 14 toward the lower side in the threshing processing direction along with the rotation operation of the handling cylinder 16, It is fixedly installed so as to be lined up with a predetermined interval in the direction. Of the plurality of dust transfer valves 49, the frontmost dust transfer valve (
49A is a side edge portion 24 on the left side from the vertical wall portion 24B on the front side.
The other dust delivery valve 49B is formed in an arc shape extending over C, and is formed in an arc shape extending over the left and right side edge portions 24C.

That is, since the top plate 24 is provided with the curved portion 24A, the threshing-processed product that is scraped up and conveyed to the upper part of the handling chamber 14 by the plurality of handling teeth 48 and the like as the handling barrel 16 rotates is transferred to the top plate 24. The catching net 1 below the lower side in the threshing process direction along the top plate 24 and the dust-sending valve 49 without violent collision.
7 can be smoothly guided, and the dust-sending valves 49 are formed in a long arc shape extending over the left side edge portion 24C or the left and right side edge portions 24C. It is possible to effectively improve the guide action of each dust transfer valve 49A with respect to the threshing treatment product that has been conveyed to the upper portion of the handling chamber 14 due to the rotation, whereby each handling tooth 48 conveys the threshing treatment product. Not having a shape, while forming a shape for exclusive use of threshing that can suitably hit or combing threshing processed product, it is possible to favorably convey and guide the threshing processed product toward the lower side of the threshing processing direction,
As a result, it is possible to improve the threshing performance and the transportation performance for the threshed material.

A seam member 50 made of a steel plate is detachably connected to the left and right side edge portions 24C so as to have a guide surface that is continuous with the inner surface of the curved portion 24A and the inner edge of the receiving net 17. That is, since the seam member 50, which is located at the seam between the receiving net 17 and the top plate 24, is in contact with the threshing material and is liable to wear, the seam member 50 is detachable, and the seam member 50 is attached to the top plate 24. As in the case where the seam member 50 is integrally formed with the seam member 50, it is possible to appropriately deal with the wear of the seam member 50 without incurring the trouble of replacing the entire top plate 24 due to the wear of the seam member 50 and the economical disadvantage.

By the way, a small clearance is set between the tip of each handle tooth 48 and the lower edge of each dust-sending valve 49 in order to guide the threshing processed material by the dust-sending valve 49 well. Also, each handling tooth 48
Between the tip of each tooth 48 and the inner edge of the net 17, in order to promote the leakage of the singulated grain from the net 17, a tip of each handling tooth 48 and a lower edge of each dust feed valve 49 are provided. A clearance larger than the clearance set between is set.

As shown in FIG. 3, FIG. 4, FIG. 6, FIG. 12 and FIG.
A conveyance assisting member 51 that receives the cut grain culm supplied from the supply port 25 and assists the scraping and conveying of the cut grain culm by the scraping section 41 of the handling drum 16 is provided between and. The conveyance assisting member 51 is configured by two plates 51A that are bolt-connected to each other in a U-shape in a front view and covers the lower side of the handling cylinder 16 from below. The pair of left and right support frames 52 arranged in the opposite direction is detachably bolted. In other words, by configuring the transport auxiliary member 51 to be detachable so that the transport auxiliary member 51 is likely to be worn and abraded severely, the transport auxiliary member 51 is integrally formed with the receiving net 17 or the left and right support frames 52. It is possible to appropriately deal with the abrasion of the conveyance assisting member 51 without causing troubles such as exchanging the receiving net 17 or the left and right support frames 52 together with the conveyance assisting member 51 due to the abrasion of the conveyance assisting member 51 and the economical disadvantage.

As shown in FIGS. 3, 5, 6, and 14, the receiving net 17 is composed of four receiving net members 53 formed in the same shape, and is detachably bolted to the left and right support frames 52. There is. Each net member 53 has a plurality of vertical bars 53B made of strip-shaped steel plate on a base frame 53A.
A plurality of first horizontal rails 53C made of strip-shaped steel plates curved and formed in an arc shape are arranged in the front-back direction at regular intervals in the circumferential direction of 6 and are provided in the front-back direction that is the support shaft direction of the handling cylinder 16. A state in which a plurality of second horizontal rails 53D made of a piano wire that is curved and formed in an arc shape are arranged in the left-right direction in a spaced-apart state and are spaced at regular intervals in the front-rear direction between adjacent first horizontal rails 53C. Are arranged in the left-right direction, and the mesh thereof is formed in a horizontally long rectangle in which the length in the circumferential direction of the handling cylinder 16 is longer than the length in the front-rear direction.

That is, since the net 17 is configured to have a horizontally long rectangle whose mesh is long in the rotation direction of the handling cylinder 16, the single-grained grains and the like obtained by the threshing process on the cut grain culms are received by the net 17. Therefore, it is possible to avoid the occurrence of exfoliated grains resulting from the suppression of the leakage of the singulated grain from the receiving net 17. Further, by forming each net member 53 in the same shape, it is possible to improve the productivity and assembling property of the net 17.

As shown in FIG. 3 and FIG. 15, the chaff sheave 31 for rough sorting is a single sorting plate 54.
And is connected to the sheave case 29 by a bolt in a rearwardly inclined posture, which is located on the lower side in the sorting direction.

A plurality of leakage holes 54A formed in a rectangular shape in plan view are provided on the front side of the selection plate 54 (one-third region of the entire selection plate 54) between the leakage holes 54A in the front row and the leakage holes in the rear row. The lower holes 54A are arranged in a staggered arrangement. On the rear side of the selection plate 54 (2/3 area of the entire selection plate 54), a plurality of leakage holes 54B and 54C formed in a rectangular shape in plan view having the selection pieces 54a and 54b are provided. Leakage holes 54B, 5 in the rear row between the holes 54B, 54C
The 4Cs are arranged in a staggered pattern.

Of the sorting pieces 54a and 54b, the sorting piece 54 located on the left-right center side of the sorting plate 54
The a is formed in a scaly shape that is narrower toward the lower side in the sorting direction and is located above. The sorting pieces 54b located at the left and right ends of the sorting plate 54 are rectangular and shorter than the sorting pieces 54a on the left and right center sides, and are formed so as to be positioned higher toward the lower side in the sorting direction.

That is, since the rough selection chaf sheave 31 is configured by the single selection plate 54,
For example, as compared with a case where the chaff sheave 31 is configured by arranging a large number of chaf flips made of strip steel plates arranged in the front-rear direction at regular intervals, it is possible to simplify the configuration and reduce the cost. ..

Then, by forming the leakage hole 54A having no sorting pieces 54a and 54b on the front side of the chaff sheave 31 to which the sorting material having a high content rate of the singulated grain is supplied, the chaff sheave 3
The number of single-grained grains leaking from the front side of 1 to the lower Glen pan 33 and the Glen sieve 34 increases, and as a result, the recovery rate of the single-grained grains can be increased.

Further, on the rear side of the chaff sheave 31, the leak holes 54B, 54 provided with the sorting pieces 54a, 54b.
Since the Cs are formed in a staggered pattern in the front, rear, left, and right, the chaff sheave 3
The sorted products on No. 1 are evenly distributed in the left-right direction without unevenness, so that the leakage of the singulated grain from the leakage holes 54B and 54C can be promoted. Moreover, since the chaff sheave 31 is installed in the rearwardly inclined posture, the chaff sheave 31 puts the sorted products upward in the sorting process direction in the sieving sorting process as compared with the case where the chaff sheave 31 is mounted in the horizontal posture. The force to push toward the side is increased, which suppresses the conveyance of the sorted products to the lower side in the sorting direction, and the vertical movement of the sorted products becomes severe, which makes the sorting of the sorted products specific gravity difference more effective. Therefore, each of the leakage holes 54B, 54 of the grain having a large specific gravity
Leakage from C is promoted, and it is possible to effectively suppress the occurrence of No. 3 loss in which the singulated grain is discharged from the discharge port 23 to the outside of the vehicle, and as a result, the grain collection efficiency is improved. You can

Furthermore, the selection pieces 54b at the left and right ends of the chaff sheave 31 are replaced with the selection pieces 54 at the left and right center sides.
By forming the chaff sheave 31 shorter than a, it is possible to promote the leakage of grains or the like from the leakage holes 54C at the left and right ends of the chaf sheave 31 where the sorted products are likely to accumulate. It is possible to avoid a decrease in the sorting efficiency due to the accumulation of sorted products in some parts.

By the way, the ratio of the leakage holes 54A not provided with the sorting pieces 54a, 54b formed in the chaff sheave 31 and the leakage holes 54B, 54C provided with the sorting pieces 54a, 54b depends on the kind of the grain to be sorted. Various changes can be made accordingly.

Further, on the front side of the selection plate 54, a plurality of leakage holes 54C formed in a rectangular shape in plan view so as to have a short and rectangular selection piece 54b are provided in the rear row between the leakage holes 54C in the front row. Leakage hole 54
The C may be arranged in a staggered pattern.

As shown in FIG. 3, among the sorting winds from the Karahana 20, the sorting winds passing through the upper air passage R1 pass through the air passages R4 formed in the sheave case 29 and reach the second support plate 45 of the handling cylinder 16. It is designed to flow toward you. As a result, the threshing processed material, which is prevented from flowing toward the lower side in the threshing processing direction by the second support plate 45, can be transported by wind toward the periphery of the handling cylinder 16, and as a result, the threshing processed material is secondly supported. It is possible to avoid the possibility of depositing at a position just before the plate 45 and hindering the threshing process.

As shown in FIGS. 3 and 6, the handling drum 16 has a handling tooth 48A located at the rear end thereof,
It is located rearward of the rear end and faces the outlet 18. That is, at the rear end of the handling cylinder 16, since the receiving net 17 does not exist, a relatively large space is formed around the receiving net 17, and as a result, the handling teeth 48A at the rear end of the handling cylinder are shed. Even if the grain culms are entangled, the shed grain culms come out of the tips of the handling teeth 48A due to the centrifugal force associated with the rotation of the handling barrel 16, and as a result, the handling teeth at the rear end of the handling barrel 16. It is possible to effectively suppress the retention of the shattered grain culms due to being caught on the 48A, and to promote the release of the shattered grain culms from the culm outlet 18.

[Another embodiment]

[1] The handling cylinder 16 may not be provided with the scraping portion 41, and the scraping portion 41 may be provided with combing teeth or the handling teeth 48 instead of the spiral teeth 43. Good.

[2] As the handling barrel 16, each handling barrel frame (main body constituting member) 47 may be made of a round bar steel material, a square bar steel material, a square pipe steel material, an angle material, a channel material, or the like.

[3] In the handling barrel 16, the number of the handling barrel frames (main body constituent members) 47 can be variously changed, and, for example, eight handling barrel frames 47 may be equipped.

[4] In the handling barrel 16, a plurality of handling barrel frames (main body constituent members) 47 are attached to each support plate 4.
You may make it adhere to 4 to 46 so that the orientation cannot be changed.

[5] The handling cylinder 16 may be formed in a drum shape using a plate formed in a cylindrical shape as the main body constituting member 47.

[6] All the handle teeth 48 mounted on the main body constituent member 47 may be fixed to the main body constituent member 47 by welding, or may be detachably connected to the main body constituent member 47 by bolts.

[7] A guide surface that guides all the handle teeth 48 or a part of the handle teeth 48 provided in the main body component member 47 toward the lower side of the threshing process direction along with the rotation of the handling cylinder 16. It may be formed in a blade shape having L, and the end portion thereof functions as a guide portion that guides the threshing processed material toward the lower side in the threshing processing direction with the rotation of the handling cylinder 16. You may bend and form in a character shape.

[8] A square bar steel material, a round pipe material, or the like may be adopted as the handle teeth 48, and U
You may make it employ|adopt the thing bent and formed in V shape.

[9] The arrangement interval of the handle teeth 48 can be variously changed. For example, when the number of the handle barrel frames (main body constituting members) 47 to be equipped is a multiple of 3, the handle teeth 48 are adjacent to each other. The operating body frame (main body constituting member) 47 is positioned so as to be displaced by a 1/3 pitch in the front-rear direction from the operating teeth 48 provided on the operating body frame (main body constituting member) 47, and the number of the operating body frame (main body constituting member) 47 to be provided is set. In the case of a multiple of 4, each handle tooth 48 is positioned so as to be displaced from the handle tooth 48 mounted on the adjacent handle barrel frame (main body constituting member) 47 by a quarter pitch in the front-rear direction. The arrangement may be set. Further, for example, the arrangement intervals of the handle teeth 48 on the front side and the rear side are made different so that the front-rear spacing of the handle teeth 48 on the rear side is larger than the front-rear spacing of the handle teeth 48 on the front side. You may do it.

[10] When all the dust-sending valves 49 or a part of the dust-sending valves 49 mounted on the top plate 24 are extended to one of the left and right side edge portions 24C of the top plate 24 or both the left and right side edge portions 24C. It may be formed to have a short length.

[11] The dust-sending valve 49 may be configured to be movable so that the opening degree can be adjusted according to the amount of threshing material in the handling chamber 14 to further improve threshing performance and threshing efficiency.

[12] As the top plate 24, the curved portion 24A may be formed to be curved along the rotation locus K drawn by the tips of the handle teeth 48. Also, instead of the curved portion 24A, the handling cylinder 1
It may be configured to have a bent portion that is bent and formed so as to cover the upper side of 6 from above.

1 Body Frame 4 Mowing and Conveying Device 5 Threshing Device 13 Feeder 14 Handling Room 15 Support Shaft 16 Handling Cylinder 24 Top Plate 26 Front Wall of Handling Room 27 Rear Wall of Handling Room 41 Scraping Section 42 Handling Processing Section 43 Spiral Teeth 44 1st Support plate 45 Second support plate 46 Third support plate 47 Handling barrel frame 48 Handling teeth 49 Dust valve

Claims (8)

The body frame is equipped with a reaping and conveying device and a threshing device,
The harvesting and conveying device is provided with a feeder that conveys a harvested culm toward the threshing device,
The threshing device is rotationally driven with a handling chamber formed in the upper part of the threshing device, and a spindle provided inside the handling chamber and installed along the front-rear direction that is the conveyance direction of the harvested culm as a fulcrum. Is provided with
The handling cylinder is provided with a scraping section that constitutes a front part of the handling cylinder, and a handling processing section that configures a rear part of the handling cylinder,
The handling unit has a plurality of handling barrel frames supported so as to be lined up at intervals in the circumferential direction of the handling barrel, and a plurality of handling teeth protruding outward from the handling barrel frame. ,
The plurality of handling barrel frames and the plurality of handling teeth function as a handling processing member that acts on the threshing material,
The handling room is provided with a top plate that covers the upper side of the handling barrel,
A plurality of dust transfer valves are provided inside the top plate so as to be lined up at intervals in the front-rear direction, and convey the threshed material conveyed to the upper part of the handling chamber as the handling barrel rotates. It is configured to guide toward the lower side of the direction,
In a plan view, the plurality of dust-sending valves is a handling process that guides a threshing-treated product toward a lower side in the transport direction along with rotation of the handling process unit at a portion corresponding to the handling process unit on the top plate. Equipped with a dust control valve
When seen in a plan view, both ends of the dust handling valve for the handling processing unit project outside the handling barrel frame when located at the outermost side in the left-right direction orthogonal to the front-rear direction. Type combine. The handle tooth is configured in a straight rod-shaped member,
The all-culm throw-in according to claim 1, wherein, in plan view, the dust handling valve for the handling processing unit overlaps with the handling teeth protruding from the handling barrel frame when located at the outermost side in the left-right direction. Type combine. The all-culm throw-in type combine harvester according to claim 1 or 2, wherein an interval between the dust handling valves for the handling processing unit is set to be larger than an interval between the handling teeth adjacent to each other in the front-rear direction in the handling barrel frame. The scraping part is provided with a frusto-conical base part and an outer circumference of the base part, and the harvested culm supplied and conveyed to the handling chamber is directed rearward with rotation of the handling barrel around the spindle. And spiral teeth for scraping and conveying,
When seen in a plan view, the plurality of dust-sending valves are provided in a portion of the top plate corresponding to the scraping portion for guiding the cut culm toward the lower side in the transport direction as the scraping portion rotates. Equipped with a dust control valve
The all-culm throw-in type combine harvester according to any one of claims 1 to 3, wherein, in a plan view, the dust suction valve for the scraping portion overlaps with the spiral tooth located outside. When seen in a plan view, the dust trap valve for the sweeping portion has a portion corresponding to the sweeping portion on the top plate and a top plate in a state in which a portion on the upper side in the transport direction is inserted into the scraping portion side. The all-culm throw-in type combine harvester according to claim 4, which is provided over a portion corresponding to the handling processing part in the. The support shaft is composed of a rod-shaped member extending from a front portion of the scraping portion to a rear portion of the handling processing portion,
A first support plate connected to a rear portion of the scraping portion and supporting a front portion of the handling barrel frame is provided at a front portion of the support shaft,
A third support plate for supporting the rear part of the handling barrel frame is provided at the rear part of the support shaft,
Each of the handling body frames is composed of a single rod-shaped member extending from the front to the rear of the handling processing unit ,
Wherein each of扱歯supported only a single said threshing drum frame, wherein the thresher frame, while supporting the扱歯, detachably from the first support plate and the front Symbol third supporting plate The all culm throw-in type combine harvester according to any one of claims 1 to 5, which is configured. The support shaft is in a state of penetrating the first support plate and the front Symbol third supporting plate is rotatably spanned over the front and rear walls of the threshing chamber,
The handling barrel frame is provided between the first support plate and the third support plate ,
Before SL thresher frame in a state where the support shaft for said front wall and the rear wall of the threshing chamber is bridged, the entire culm-input combine of claim 6 that is detachably attached. The scraping part is provided with a frusto-conical base part and an outer circumference of the base part, and the harvested culm supplied and conveyed to the handling chamber is directed rearward with rotation of the handling barrel around the spindle. And spiral teeth for scraping and conveying,
Among the plurality of handle teeth, a handle tooth located on the most upstream side in the transport direction is provided with a gap between the handle portion and the rear end of the base portion, and the handle barrel frame and the first handle tooth are provided at a position corresponding to this gap. 1. A connection part between the support plate and
Among the plurality of handle teeth, the handle tooth located on the lowermost side in the transport direction is provided with a space from the rear end of the handle body frame, and the handle body frame is provided at a position corresponding to this interval. The all-culm throw-in type combine harvester according to claim 6 or 7, wherein a connecting portion between the third support plate and the third support plate is provided.

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