JP6765338B2 - All-culm input type combine - Google Patents

Description

The present invention relates to a full-culm-filled combine harvester provided with a handling cylinder that is rotationally driven around a support shaft erected along the transport direction of the harvested culm.

As the above-mentioned all-culm-loading combine, it is common to equip the handling chamber with a handling cylinder configured to have a spiral handling tooth on the outer peripheral portion (see, for example, Patent Document 1).

JP-A-11-266666

In other words, unlike the self-removing combine, the threshing device is not equipped with a transport device for transporting harvested culms such as a feed chain in the all-culm input type combine, so the above-mentioned handling barrel is installed. As a result, as the culm rotates, the threshed product is screw-conveyed toward the lower side in the threshing process while being threshed.

However, if the outer peripheral portion of the handling cylinder is equipped with a spiral handling tooth as described above, the threshing action due to the striking wall or combing of the handling tooth on the threshed product becomes insufficient, and the threshing product becomes a single grain. Since it becomes difficult to promote the above, there is room for improvement in improving the threshing performance and the grain recovery efficiency.

An object of the present invention is to provide a full-culm input type combine capable of improving threshing performance and grain recovery efficiency.

In order to achieve the above object, the all-culm harvester combine according to the present invention is characterized by the following configuration.
A cutting and transporting device and a threshing device are mounted on the body frame.
The cutting and transporting device is provided with a feeder that transports the harvested grain culms toward the threshing device.
The threshing device has a handling chamber formed in the upper part of the threshing device and a handling barrel provided inside the handling chamber and rotationally driven around a support shaft erected along the transport direction of the harvested culm as a fulcrum. Is provided,
The handling cylinder is provided with a scraping portion constituting the front end portion of the handling cylinder and a handling processing portion connected to the rear end of the scraping portion.
The handling processing unit has a plurality of handling cylinder frames supported so as to be arranged at intervals in the circumferential direction of the handling cylinder, and a plurality of handling teeth protruding outward from the handling cylinder frame. ,
The support shaft is composed of a rod-shaped member extending from the front portion of the scraping portion to the rear portion of the handling processing portion.
A first support plate located at the rear of the scraping portion and supporting the front portion of the handling cylinder frame is provided at the front portion of the support shaft.
A third support plate for supporting the rear portion of the handling cylinder frame is provided at the rear portion of the support shaft.
Each of the handling cylinder frames is composed of one rod-shaped member extending from the front portion to the rear portion of the handling processing portion, and the handling cylinder is formed between the first support plate and the third support plate on the support shaft. A second support plate is provided to support the frame
All the teeth are supported by only one body frame so as not to straddle the plurality of body frames, and all the teeth are supported by only one body frame.
In each of the handle frames, the first support plate, the second support plate, and the third support plate are supported by the support shaft, and the scraping portion is the front portion of the first support plate. while keeping the position in the扱歯in supporting the state of the entire culm on type combine configured detachably from the first supporting plate and said second supporting plate and said third supporting plate.

Hereinafter, more suitable configurations will be listed in addition to the above configurations.

In one preferred embodiment, the support shaft is rotatably erected across the front and rear walls of the handling chamber while penetrating the first support plate, the second support plate and the third support plate. ,
The handling body frame is arranged between the first support plate and the third support plate.
The second support plate is arranged inside the handling cylinder in the radial direction of the handling cylinder frame.
The handling body frame is configured to be detachable with the support shaft erected between the front wall and the rear wall of the handling chamber.

In one preferred embodiment, the scraping portion is provided on a truncated cone-shaped base portion and an outer circumference of the base portion, and a harvested grain culm supplied and conveyed to the handling chamber is rotated around the support shaft of the handling cylinder. It has a spiral tooth that scrapes and conveys to the rear along with
The spiral tooth is provided so that the rear end portion of the spiral tooth does not protrude from the rear end of the base portion toward the handling processing portion, and the handling is located on the most superior side in the transport direction among the plurality of handling teeth. The teeth are provided at a distance from the rear end of the base, and a connecting portion between the handling frame and the first support plate is provided at a position corresponding to this distance.
The tooth handling tooth located on the lowermost side in the transport direction among the plurality of handling teeth is provided at a distance from the rear end of the handling body frame, and the handling tooth frame and the handling body frame are located at positions corresponding to this distance. A connecting portion with the third support plate is provided.

In one preferred embodiment, a receiving net for leaking the threshed product in the handling processing unit is provided below the handling processing unit.
The rear end of the receiving net is terminated on the upper side in the transport direction from the rear end of the handling processing unit, and the outlet is provided on the lower side in the transport direction than the rear end of the receiving net.
The rear portion of the handling cylinder is arranged so as to be located behind the rear end of the receiving net and face the culm opening.
The distance between the tooth handling tooth located on the lowermost side in the transport direction and the rear end of the handling body frame among the plurality of handling teeth is the distance between the handling tooth located on the uppermost side in the transporting direction and the rear end of the scraping portion. It is provided wider than the distance between and.

In one preferred embodiment, the tooth handle is configured as a straight rod-shaped member.
The handling chamber is provided with a top plate that covers the upper side of the handling cylinder.
A plurality of dust transmission valves are installed inside the top plate so as to be spaced apart from each other in the front-rear direction.
The plurality of dust feeding valves are configured to guide the threshed product transported to the upper part of the handling chamber as the handling cylinder rotates toward the lower side in the transport direction.
The distance between the adjacent dust feed valves among the plurality of dust feed valves is set to be larger than the distance between the tooth handling teeth adjacent to each other in the front-rear direction in the handling processing unit.

In one preferred embodiment, in a plan view, the plurality of dust feeding valves move the cut grain culm to the lower side in the transport direction with the rotation of the scraping portion at the portion of the top plate equipped with the scraping portion. Equipped with a dust valve for the scraping part that guides you toward
In a plan view, the dust feeding valve for the scraping portion has a portion of the top plate equipped with the scraping portion and the top plate in a state where the upper portion in the transport direction is inserted into the scraping portion side. It is deployed over the part equipped with the handling processing unit in the above.

In one preferred embodiment, the plurality of handling barrel frames function as a handling member that acts on the threshed product.

Overall side view of the combine harvester Overall plan view of the all-culm harvester combine Longitudinal side view of threshing device Partial longitudinal front view showing the configuration of the front end of the threshing device Partial vertical front view showing the configuration of the front and rear middle parts of the threshing device Top view of the main part showing the configuration of the handling cylinder and the transport auxiliary member Cross-sectional plan view of the main part showing the configuration of the handling cylinder Longitudinal rear view of the handling cylinder showing the configuration of the handling cylinder Cross-sectional plan view of the main part showing another configuration of the handling cylinder Longitudinal 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 valve Top view of the main part showing the configuration of the transport auxiliary member Longitudinal side view of the main part showing the configuration of the transport auxiliary member Perspective view of the main part showing the configuration of the receiving net Perspective view of the main part showing the configuration of the chaff sheave

FIG. 1 shows the entire side surface of a full-threshing type combine for harvesting rice, wheat, etc., and this combine is formed on a body frame 1 made of square pipe steel or the like, and an engine 2 or a non-figure combine. A pair of left and right crawler type traveling devices 3 driven by power from the engine 2 transmitted via the transmission and the like are mounted on the lower part of the vehicle body frame 1 and equipped with a transmission and the like, and the front part of the vehicle body frame 1. In addition, a harvesting transport device 4 that cuts the planted grain harvester to be harvested and transports it backward is connected so as to be able to move up and down, and is attached to the left half of the vehicle body frame 1 to the harvesting combine harvester from the harvesting transport device 4. On the other hand, a threshing device 5 that performs a threshing process and sorts the processed product obtained by the threshing process is mounted, and grains from the threshing device 5 are stored in the right half of the vehicle body frame 1. At the same time, a bagging device 6 that enables bagging of the stored grains is mounted, and a boarding operation unit 7 is formed at a position in front of the bagging device 6 in the vehicle body frame 1.

The left and right crawler type traveling devices 3 show a straight-ahead state by being driven at a constant speed based on a swing operation of the control lever 8 provided in the boarding operation unit 7 in the left-right direction, and they are differential. It is configured to show the turning state by doing so.

As shown in FIGS. 1 and 2, in the cutting and transporting device 4, as the vehicle body travels, the dividers 9 equipped on the left and right ends of the front portion of the cutting and transporting device 4 remove the planted culms from the harvested culms and the non-harvested culms. The rotary reel 10 deployed above the front part of the culm to be harvested, which is carved by the left and right dividers 9, scrapes the planted culm to be harvested to the rear and equips the bottom of the culm. The varican-shaped cutting mechanism 11 cuts the root side of the planted culm to be harvested, and the auger 12 deployed behind the cutting mechanism 11 cuts the planted culm (cut culm) after cutting by the cutting mechanism 11. ) Are gathered at a predetermined location in the left-right direction and sent out to the rear at the predetermined location, and the feeder 13 consisting of a transport conveyor extending from the predetermined location to the front upper part of the grain removal device 5 removes the harvested culm from the auger 12. It is configured to be conveyed toward the device 5. Further, the threshing device 5 and the feeder 13 are expanded and contracted by the hydraulic elevating cylinder (not shown) erected over the vehicle body frame 1 and the feeder 13 based on the swinging operation of the control lever 8 in the front-rear direction. It is configured so that the cutting height can be adjusted by changing the height position of the cutting mechanism 11 with respect to the planted grain culm by raising and lowering and swinging with the connection point with and as a fulcrum.

As shown in FIGS. 3 to 5, the threshing device 5 rotates with a front-rear support shaft 15 erected along the transport direction of the cut grain culm as a fulcrum in the handling chamber 14 formed above the handling chamber 16. Is equipped with a catch net 17 formed in a front view U-shape that covers the lower side of the handling cylinder 16 from below, and the end portion of the threshing device 5 on the lower side in the threshing processing direction. A culm opening 18 is formed behind the receiving net 17, a swing sorting mechanism 19 is provided below the receiving net 17, and a wall insert 20 is provided below the front of the swing sorting mechanism 19. The first recovery unit 21 is formed below the front side of the wall insert, the second collection unit 22 is formed below the rear side of the swing sorting mechanism 19, and the discharge port 23 is formed behind the swing sorting mechanism 19 for handling. It is configured to include a top plate 24 that covers the upper side of the body 16 from above.

The handling chamber 14 is partitioned by a receiving net 17 or a top plate 24 covering the handling cylinder 16, a supply port 25 is formed in a portion below the front end thereof, and a rear end portion of the feeder 13 is connected to the supply port 25. The entire harvested grain culm conveyed by the feeder 13 is input and supplied from the supply port 25 as a threshing process.

The support shaft 15 of the handling cylinder 16 is rotatably erected over the front wall 26 and the rear wall 27 of the threshing device 5, and the support shaft 15 is used as a fulcrum by the power transmitted from the engine 2 via the wall insert 20 or the like. By being rotationally driven clockwise in the front view, the cut grain sack supplied to the handling chamber 14 is threshed to promote the single graining of the grain, and the cut grain shaving is threshed. Transport toward the rear, which is on the lower side of the direction.

The receiving net 17 is a concave receiving net formed in a grid pattern, receives the harvested grain culms supplied to the handling chamber 14, assists the threshing process of the handling cylinder 16 with respect to the harvested grain culms, and obtains the threshing process. While leaking the single-grained grains, grains with branch stems, or culms generated in the threshing process toward the lower rocking sorting mechanism 19, the rocking sorting mechanism for threshing culms, etc. Prevent leakage to 19.

The rocking sorting mechanism 19 has a grain pan 30 for rough sorting, a chaff sheave 31 and a straw rack 32 in this order on a sheave case 29 which is rocked and driven in the front-rear direction by a cam-type drive mechanism 28. The Glen Pan 33 and the Glen Sheave 34 for fine sorting are arranged in this order from the front side of the sheave case 29 in the lower part of the sheave case 29. Then, the sorted product leaked from the receiving net 17 in a state where single-grained grains and culms are mixed is received by the upper grain pan 30, the chaff sheave 31 or the strorac 32, and the rough sorting process is performed by sieving. The sorted products leaked from the chaff sheave 31 in a state where single-grained grains and grains with branch stalks are mixed are received by the lower Glenpan 33 and Glenshive 34, and the fine sorting process is performed by sieving. After applying, the sorted product is divided into a single grain as the first product, a mixture of grains with stalks and culm as the second product, and dust such as culm as the third product. Sort to.

The wall insert 20 is powered by the engine 2 transmitted via the belt-type transmission mechanism 35, and is driven to rotate around the support shaft 20A as a fulcrum to generate a sorting wind, and the sorting wind has three. By being supplied to the sorting processed product leaked from the receiving net 17 or the sorting processed product sorted by the swing sorting mechanism 19 through the air passages R1 to R3, the wind force is applied to the sorted product. The sorting process is performed, and the wastes having a small specific gravity are blown from the sorted product and transported toward the discharge port 23 on the lower side in the threshing process direction.

The No. 1 collection unit 21 collects the single-grained grains leaked from the Glen Seeb 34 of the swing sorting mechanism 19 as the No. 1 product in a state where dust such as straw dust is removed by the sorting wind from the wall insert 20. Then, the collected No. 1 item is conveyed to the lifting screw 37 (see FIG. 2) which is connected to the right end of the No. 1 screw 36 which is arranged in the left-right direction on the bottom thereof.

The second collecting unit 22 is a mixture of grains with stalks and culms that flowed down from the rear end of the Glen Sheave 34 without leaking from the Glen Sheave 34 of the rocking sorting mechanism 19, and the rocking sorting mechanism 19. A mixture of grains with branch stems and culm waste leaked from the straw rack 32 was collected as the second product, and the collected second product was placed on the bottom of the second screw 38 in the left-right direction at the right end. It is conveyed toward the second reduction mechanism 39 (see FIG. 2) which is continuously connected to the above.

The lifting screw 37 lifts the first item conveyed by the first screw 36 and supplies it to the grain tank 40 provided in 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 reprocessing the No. 2 product conveyed by the No. 2 screw 38, and the No. 2 product after the threshing treatment by the reprocessing unit is provided. It is lifted and reduced to the swing sorting mechanism 19 (see FIG. 2).

The discharge port 23 collects culm culms that flow down from the outlet 18 without leaking from the receiving net 17, and culms that are sorted and transported to the rear of the swing sorting mechanism 19 by a sieving sorting process or a wind sorting process. Release to the outside of the car.

As shown in FIGS. 3 to 8, the handling cylinder 16 includes a truncated cone-shaped scraping portion 41 provided at the front end portion thereof and a handling processing portion 42 connected to the rear end of the scraping portion 41. Has been done. On the outer peripheral surface of the scraping portion 41, two spiral teeth 43 that scrape and convey the cut grain culm supplied from the supply port 25 toward the rear handling portion 42 when the handling cylinder 16 is rotated are integrated. It is equipped.

The handling processing unit 42 is integrally mounted on the first support plate 44 integrally mounted on the front portion of the support shaft 15, the second support plate 45 integrally mounted on the front and rear intermediate portions of the support shaft 15, and the rear end portion of the support shaft 15. It is made of a round pipe steel material or the like supported by the third support plate 46 and the support plates 44 to 46 so as to be lined up at regular intervals in the circumferential direction of the handling cylinder 16 in a front-rear posture along the support shaft 15. The six handling cylinder frames (an example of the main body constituent members) 47 and each handling cylinder frame 47 are in a posture of projecting from the handling cylinder frame 47 toward the outside of the handling cylinder 16 at predetermined intervals in the front-rear direction. It is configured in a basket shape by a plurality of handling teeth 48, etc., which are equipped so as to line up.

That is, the handling cylinder 16 is arranged so that a plurality of handling teeth 48 projecting outward are arranged in the circumferential direction and the front-rear direction of the handling processing unit 42 at predetermined intervals, and the handling processing is performed. The internal space S of the unit 42 communicates with the handling chamber 14 to allow the threshed product to enter the internal space S, and as a result, when the threshing product is rotated, the threshed product around the internal space S is allowed to enter. While stirring the threshed products that have entered the internal space S, the threshed products are subjected to the threshing treatment by hitting or combing the handling cylinder frame 47 and the handling teeth 48.

Further, since the internal space S of the handling processing unit 42 communicates with the handling room 14, even when a large amount of harvested grain shavings is supplied to the handling room 14 as a threshing processed product, the internal space of the handling processing unit 42 S can be effectively used as a processing space for the threshing process, whereby the retention of the threshed processed material in the processing space and the saturation of the processing space can be avoided. As a result, the threshed product leaks from the receiving net 17 without sufficient threshing treatment due to the retention of the threshed product and the saturation of the treatment space, or the load required for the threshing treatment is increased and handled. It is possible to avoid the occurrence of inconveniences such as damage to the transmission system for the body 16.

When the handling cylinder 16 is rotated, not only the plurality of handling teeth 48 but also the six handling cylinder frames 47 forming the handling processing portion 42 of the handling cylinder 16 act on the threshing processed product. Since it functions as a threshing performance, it is possible to improve the threshing performance and the threshing efficiency.

Moreover, in the front-rear middle portion of the threshing cylinder 16 where the amount of threshed material is reduced due to the threshing treatment on the front side of the handling cylinder 16 causing many grains to become single grains and leaking from the receiving net 17. The second support plate 45 prevents the threshed product from flowing downward in the threshing process direction in the internal space S of the threshing cylinder 16 and guides the threshed product around the threshing cylinder 16 as the threshing cylinder 16 rotates. , Threshing due to impact on the threshed product such as the handling teeth 48 or combing, and leakage of the single-grained grain from the receiving net 17 are promoted. Therefore, the single-grained grain contained in the threshed product is contained. The occurrence of No. 3 loss due to the fact that grains, ungrained grain shavings, etc. pass through the internal space S of the handling cylinder 16 and are discharged from the spill port 18 at the lower end in the threshing process direction together with the sizing grain shavings. It can be stopped.

Further, when the handling cylinder 16 is rotated, the outside air sucked from the supply port 25 as the spiral teeth 43 rotate is generated around the handling cylinder 16 together with the threshing culm that is scraped and conveyed by the action of the scraping portion 41. The culm waste generated by the threshing process can be prevented from flowing out to the feeder 13 from the supply port 25, and the threshed product can be smoothly flowed into the internal space S of the threshing process unit 42. Can be transported to the lower side in the threshing process direction more quickly.

Further, 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 is the cutting and transporting device 4 equipped with the cutting mechanism 11 and the auger 12. Since the carry-out port (not shown) for carrying out the collected culm formed in the cutting and collecting section and the supply port 25 are communicated with each other, when the handling cylinder 16 is rotated, the suction action due to the rotation of the spiral teeth 43 is applied. , Dust such as culms generated in the cutting process and the collecting process in the cutting and collecting section, together with the outside air, from the carry-out port of the cutting and collecting section through the internal space of the feeder 13 and the supply port 25, and around the handling cylinder 16. It will flow into the internal space S of the handling processing unit 42. As a result, it is possible to suppress the adhesion and accumulation of culms and the like in the cutting and collecting section, and the poor transportation of the culm due to the adhesion and accumulation, and the deterioration of the working environment and visibility due to the soaring. Can be suppressed.

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

That is, six culm frames 47 are arranged on the outer peripheral side of each of the support plates 44 to 46 so as to be arranged at regular intervals in the circumferential direction, so that the diameter of the culm 16 is increased. Therefore, it is possible to prevent the culm from being wrapped around the handling cylinder 16.

Each handling cylinder frame 47 can be changed in a normal posture in which the front-rear direction thereof coincides with the front-rear direction of the handling cylinder 16 and an inverted posture in which the front-rear direction thereof is opposite to the front-rear direction of the handling cylinder 16. It is bolted to each of the support plates 44 to 46 so that the front and rear directions of the adjacent handling cylinder frames 47 are reversed.

A plurality of mounting holes 47A and 47B that enable mounting of the handling teeth 48 are arranged in each handling body frame 47 at a constant pitch P in the front-rear direction, and the handling body frame 47 is mounted from the front end to the front end. The distance L1 to the center of the hole 47A and the distance L2 from the rear end of the barrel frame 47 to the center of the last mounting hole 47A are different by half a pitch (= 1 / 2P). ..

Each of the handling cylinder frames 47 is connected and supported by the support plates 44 to 46 in a state in which the front-back orientations of the adjacent handling cylinder frames 47 are reversed, whereby the six handling cylinder frames 47 have the same configuration. The teeth 48 equipped on each of the handling cylinder frames 47 can be positioned in a state of being displaced by half a pitch in the front-rear direction from the handling teeth 48 of the adjacent handling cylinder frames 47. As a result, the striking interval of the handling teeth 48 with respect to the threshed product can be reduced without reducing the spacing between the adjacent handling teeth 48.

That is, while reducing the cost by making each of the handling cylinder frames 47 having the same configuration, and reducing the distance between the adjacent handling teeth 48, it becomes easier to invite the culm in the threshing product for the handling teeth 48. While effectively preventing clogging of the threshed product due to entanglement, it is possible to improve the threshing performance by increasing the number of times the handling teeth 48 hit the threshed product.

Further, by equipping each handling body frame 47 so that the orientation can be changed between the normal posture and the inverted posture, the handling teeth 48 located on the upper side in the threshing treatment direction, which are relatively easily worn due to the large amount of threshing processed material, are provided. When the wear becomes significant due to long-term use, the orientation of each handling body frame 47 is changed so that the plurality of handling teeth 48 provided on each handling body frame 47 are relatively easily worn in the threshing treatment direction. The position can be changed at once by exchanging the tooth handling 48 on the upper side and the tooth handling 48 on the lower side in the threshing processing direction, which is less likely to be worn. Can be effectively used as a tooth handling 48 on the upper side in the direction of threshing treatment, which has a large amount of threshing treatment material.

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

Of the respective handling teeth 48, the handling tooth 48A to be mounted using the small diameter mounting hole 47A is composed of a stepped round bar steel material having a small diameter portion 48a inserted into the mounting hole 47A, and the center thereof is It is detachably nut-fastened to the handle frame 47 so as to be located on a line passing through the center of the support shaft 15 and the center of the handle frame 47.

The handle 48B to be mounted using the mounting hole 47B in the intermediate 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 frame 47. As described above, it is non-detachably welded to the handling body frame 47.

That is, since each of the handling teeth 48A located at both front and rear ends of the handling processing unit 42 is removable, when those handling teeth 48A are significantly worn by long-term use including changing the orientation of the handling body frame 47. Can be easily replaced with a new tooth 48A.

Further, on the lower side of the threshing processing direction in which the amount of culm culms increases, as shown in FIG. 9, if the handling teeth 48A located at the rear end of the handling cylinder 16 are deployed in a thinned state, the rear end of the handling cylinder 16 is provided. The interval between the handling teeth 48A in the portion is increased, and the retention of the threshing culm due to the catching on the handling tooth 48A at the rear end of the handling barrel can be effectively suppressed, and as a result, the threshing culm is discharged. The release from the outlet 23 can be promoted.

As shown in FIGS. 3 to 5, 10 and 11, the top plate 24 has a curved portion 24A that curves substantially along the rotation locus K of the tip of the tooth handle, and a semicircular shape located at both front and rear ends of the curved portion 24A. The vertical wall portion 24B and the linear side edge portions 24C located on the left and right sides of the curved portion 24A are provided, and the upper side of the handling cylinder 16 is covered from above and the upper side of the handling cylinder 16 is opened. It is configured so that the opening / closing / swinging operation can be performed with a plurality of hinges 24D provided on the left side edge portion 24C as fulcrums in the open state. The right side edge portion 24C is provided with a plurality of bolts 24E for fixing the top plate 24 in the closed state.

On the inner surface of the curved portion 24A, a plurality of dust feeding valves 49 that guide the threshing processed product conveyed to the upper part of the handling chamber 14 toward the lower side in the threshing processing direction are provided in the front-rear direction as the handling cylinder 16 rotates. It is fixedly equipped so that it is lined up in the direction with a predetermined interval. Of the plurality of dust transmission valves 49, the frontmost dust transmission valve 49A is formed in an arc shape extending from the front vertical wall portion 24B to the left side edge portion 24C, and the other dust transmission valves 49B are left and right side edge portions. It is formed in an arc shape over 24C.

That is, since the top plate 24 is provided with the curved portion 24A, the threshed product that has been scraped up and transported to the upper part of the handling chamber 14 by a plurality of handling teeth 48 or the like as the handling cylinder 16 rotates is transferred to the top plate 24. It can be smoothly guided toward the receiving net 17 on the lower side in the threshing process direction while following the top plate 24 and the dust sending valve 49 without violent collision, and each dust sending valve 49 is on the left side. By forming a long arc shape extending over the side edge portions 24C or the left and right side edge portions 24C, each dust sending valve 49A for the threshed product conveyed to the upper part of the handling chamber 14 as the handling cylinder 16 rotates. It is possible to effectively improve the guiding action of the threshing product, whereby each of the handling teeth 48 is not a shape having a transporting action on the threshing processed product, but a shape dedicated to threshing that can suitably hit or comb the threshing processed product. The threshed product can be satisfactorily transported and guided toward the lower side in the threshing treatment direction, and as a result, the threshing performance and the transport performance of the threshed product can be improved.

A steel plate seam member 50 formed so as to have a guide surface connected to the inner surface of the curved portion 24A and the inner edge of the receiving net 17 is detachably bolted to the left and right side edge portions 24C. That is, the seam member 50, which is located at the joint between the receiving net 17 and the top plate 24 and is easily worn due to severe contact with the threshed product, is detachably configured so that the seam member 50 can be attached to the top plate 24. It is possible to appropriately take measures against the wear of the seam member 50 without causing trouble and economic disadvantage such as replacing the entire top plate 24 due to the wear of the seam member 50 as in the case of integrally formed with the seam member 50.

Incidentally, a small clearance is set between the tip of each tooth handling 48 and the lower edge of each dust feeding valve 49 in order to improve the guidance of the threshed product by the dust feeding valve 49. Further, between the tip of each tooth handling 48 and the inner edge of the receiving net 17, the tip of each handling tooth 48 and each dust feeding valve are used to promote leakage of single grain grains from the receiving net 17. A clearance larger than the clearance set with the lower edge of 49 is set.

As shown in FIGS. 3, 4, 6, 12, and 13, a cut grain culm supplied from the supply port 25 is received between the front wall 26 of the threshing device 5 and the receiving net 17. A transport assisting member 51 that assists in scraping and transporting the cut grain culm by the scraping portion 41 of the handling cylinder 16 is provided. The transport assisting member 51 is composed of two plates 51A connected by bolts in a substantially U-shape in front view covering the lower side of the handling cylinder 16 from below, and is front and rear on the front wall 26 of the threshing device 5 and the upper part of the threshing device 5. It is detachably bolted to a pair of left and right support frames 52 arranged in a direction. That is, the transport assisting member 51, which is easily in contact with the cut grain culm and is easily worn, is detachably configured so that the transport assisting member 51 is integrally formed with the receiving net 17 or the left and right support frames 52. It is possible to appropriately take measures against the wear of the transport auxiliary member 51 without causing trouble and economic disadvantage such as exchanging the receiving net 17 or the left and right support frames 52 together with the transport auxiliary member 51 due to the wear of the transport auxiliary member 51.

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 receiving net member 53 has a strip-shaped curved shape formed by arranging a plurality of vertical bars 53B made of strip-shaped steel plates on the base frame 53A in the front-rear direction at regular intervals in the circumferential direction of the handling cylinder 16. A plurality of first cross rails 53C made of steel plates are arranged and arranged in the left-right direction at a predetermined interval in the front-rear direction which is the support axis direction of the handling cylinder 16, and a plurality of first cross rails made of an arc-shaped curved rod are formed. The two cross rails 53D are arranged and arranged in the left-right direction between the adjacent first cross rails 53C at regular intervals in the front-rear direction, and the mesh is the length in the direction along the circumferential direction of the handling cylinder 16. Is formed in a horizontally long rectangular shape that is longer than the length in the front-back direction.

That is, by configuring the receiving net 17 so that the mesh becomes a horizontally long rectangular shape that is long in the rotation direction of the handling cylinder 16, the single-grained grains obtained by the threshing process on the harvested culm can be obtained from the receiving net 17. It becomes easy to leak from the culm, and thus it is possible to avoid the occurrence of threshing grains due to the suppression of the leakage of the single grain grains from the receiving net 17. Further, by forming each net receiving member 53 into the same shape, the productivity and assembling property of the receiving net 17 can be improved.

As shown in FIGS. 3 and 15, the chaff sheave 31 for rough sorting is composed of a single sorting plate 54, and is bolted to the sheave case 29 in a rearwardly inclined posture located upward toward the lower side in the sorting direction. ing.

On the front side of the sorting plate 54 (a region of 1/3 of the entire sorting plate 54), a plurality of leak holes 54A formed in a rectangular shape in a plan view are provided between the leak holes 54A in the front row and leaks in the back row. The prepared holes 54A are arranged and formed in a staggered pattern. On the rear side of the sorting plate 54 (a region of two-thirds of the entire sorting plate 54), a plurality of leak holes 54B and 54C formed in a rectangular shape in a plan view having sorting pieces 54a and 54b are leaked in the front row. Leakage holes 54B and 54C in the back row are arranged in a staggered manner between the holes 54B and 54C.

Of the sorting pieces 54a and 54b, the sorting pieces 54a located on the left and right center sides of the sorting plate 54 are formed in a scale shape narrower toward the lower side in the sorting direction and located above. The sorting pieces 54b located at both left and right ends of the sorting plate 54 have a rectangular shape shorter than the sorting pieces 54a on the left and right center sides, and are embossed so as to be located on the lower side in the sorting direction.

That is, since the chaf sheave 31 for rough sorting is composed of a single sorting plate 54, for example, the chaf sheave 31 is configured by arranging and arranging a large number of chaf flips made of strip steel plates at regular intervals in the front-rear direction. It is possible to simplify the configuration and reduce the cost as compared with the case of doing so.

Then, by forming a leak hole 54A not provided with the sorting pieces 54a and 54b on the front side of the chaf sheave 31 to which the sorted product having a high content of single grain grains is supplied, the front portion of the chaf sheave 31 is formed. The number of single-grained grains leaking from the side to the lower Glenpan 33 and Glenshive 34 increases, and as a result, the recovery rate of the single-grained grains can be increased.

Further, by forming the leakage holes 54B and 54C provided with the sorting pieces 54a and 54b on the rear side of the chaff sheave 31 in a staggered pattern in the front-back and left-right directions, the sorting product on the chaff sheave 31 is formed in the sieving sorting process. It will be evenly distributed in the left-right direction without any deviation, and thus leakage of the single-grained grains from the leakage holes 54B and 54C can be promoted. Moreover, since the chaff sheave 31 is equipped in the rearward tilted posture, the chaff sheave 31 sets the sorted object on the upper side in the sorting processing direction in the sieving sorting process as compared with the case where the chaf sheave 31 is equipped in the horizontal posture. The force to push out the sorted product is increased, which suppresses the transport of the sorted processed product to the lower side in the sorting direction and increases the vertical movement of the sorted processed product, which makes the specific gravity difference sorting of the sorted processed product more effective. Since this can be done, the leakage of grains having a large specific gravity from the leak holes 54B and 54C is promoted, and the single grain grains are effectively discharged from the discharge port 23 to the outside of the vehicle. It can be suppressed, and as a result, the grain recovery efficiency can be improved.

Further, by forming the sorting pieces 54b on the left and right ends of the chaf sheave 31 to be shorter than the sorting pieces 54a on the left and right center side, the grains from the leak holes 54C on the left and right ends where the sorting processed material in the chaf sheave 31 is likely to be deposited. Leakage of grains and the like can be promoted, and as a result, it is possible to avoid a decrease in sorting efficiency due to the accumulation of the sorting processed material at both the left and right ends of the chaff sheave 31.

By the way, the ratio of the leak holes 54A formed in the chaff sheave 31 without the sorting pieces 54a and 54b and the leak holes 54B and 54C having the sorting pieces 54a and 54b depends on the type of grain to be sorted. Various changes can be made accordingly.

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

As shown in FIG. 3, among the sorting winds from the wall insert 20, the sorting wind passing through the upper air passage R1 passes through the air passage R4 formed in the sheave case 29 to the second support plate 45 of the handling cylinder 16. It is designed to flow toward. As a result, the threshed product whose flow to the lower side in the threshing treatment direction is blocked by the second support plate 45 can be wind-conveyed toward the periphery of the handling cylinder 16, and as a result, the threshed product is second-supported. It is possible to avoid the possibility that the threshing process will be hindered by accumulating at a position immediately before the plate 45.

As shown in FIGS. 3 and 6, in the handling cylinder 16, the handling teeth 48A located at the rear end are located rearward of the rear end of the receiving net 17 and face the culm opening 18. That is, at the rear end of the culm 16, a relatively large space is formed around the net 17 due to the absence of the receiving net 17, whereby the teeth 48A at the rear end of the culm are deflated. Even if the culms are entangled, the deciduous culms come out from the tip of the handling teeth 48A due to the centrifugal force accompanying the rotation of the handling cylinder 16, and as a result, the handling teeth at the rear end of the handling cylinder 16. It is possible to effectively suppress the retention of the deciduous culm due to the catch on 48A, and to promote the release of the deciduous culm from the outlet 18.

[Another Embodiment]

[1] The handling cylinder 16 may not be provided with the scraping portion 41, and the scraping portion 41 is provided with a combing tooth or a handling tooth 48 instead of the spiral tooth 43. May be good.

[2] As the handling cylinder 16, each handling cylinder frame (main body constituent 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 cylinder 16, the number of the handling cylinder frames (main body constituent members) 47 can be changed in various ways. For example, eight handling cylinder frames 47 may be equipped.

[4] In the handling cylinder 16, a plurality of handling cylinder frames (main body constituent members) 47 may be oriented and fixed to the support plates 44 to 46 without change.

[5] The handling cylinder 16 may be a drum-shaped one having a cylindrically formed plate as a main body constituent member 47.

[6] All the handling teeth 48 mounted on the main body constituent member 47 may be welded and fixed to the main body constituent member 47, or may be detachably bolted to the main body constituent member 47.

[7] A guide surface for guiding all or some of the tooth handling teeth 48 mounted on the main body component 47 toward the lower side in the threshing treatment direction as the threshing cylinder 16 rotates. It may be formed in the shape of a blade to have, and the tip portion thereof functions as a guide portion for guiding the threshing processed product toward the lower side in the threshing processing direction as the handling cylinder 16 rotates. It may be bent and formed in a shape.

[8] As the tooth handling 48, a square bar steel material, a round pipe material, or the like may be adopted, or a tooth having a U-shape or a V-shape bent and formed may be adopted.

[9] The arrangement interval of the handling teeth 48 can be changed in various ways. For example, when the number of the handling body frames (main body constituent members) 47 equipped is a multiple of 3, the handling teeth 48 are adjacent to each other. To position the teeth 48 equipped on the handling body frame (main body constituent member) 47 in a state of being displaced by 1/3 pitch in the front-rear direction, and to equip the handling body frame (main body constituent member) 47. When it is a multiple of 4, each tooth 48 is positioned so as to be displaced by 1/4 pitch in the front-rear direction from the tooth 48 mounted on the adjacent body frame (main body component) 47. The arrangement may be set. Further, for example, the arrangement spacing of the handling teeth 48 is different between the front side and the rear side so that the front-rear spacing of the handling teeth 48 on the rear side is larger than the front-rear spacing of the handling teeth 48 on the front side. You may do so.

[10] When all the dust sending valves 49 or some of the dust sending valves 49 equipped on the top plate 24 are spread over 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 a short length.

[11] The dust feed valve 49 may be movably configured so that the opening degree can be adjusted according to the amount of threshed material in the handling chamber 14, so that the threshing performance and the threshing efficiency can be further improved.

[12] The top plate 24 may be formed so that the curved portion 24A is curved along the rotation locus K drawn by the tip of the handling tooth 48. Further, instead of the curved portion 24A, it may be configured to have a bent portion formed so as to cover the upper side of the handling cylinder 16 from above.

1 Body frame 4 Cutting and transporting device 5 Threshing device 13 Feeder 14 Handling room 15 Support shaft 16 Handling cylinder 17 Receiving net 18 Outlet port 24 Top plate 26 Front wall 27 Rear wall 41 Scraping part 42 Handling processing part 43 Spiral teeth 44th 1 Support plate 45 2nd support plate 46 3rd support plate 47 Handling body frame 48 Handling teeth 49 Dust transmission valve

Claims (7)

A cutting and transporting device and a threshing device are mounted on the body frame.
The cutting and transporting device is provided with a feeder that transports the harvested grain culms toward the threshing device.
The threshing device has a handling chamber formed in the upper part of the threshing device and a handling barrel provided inside the handling chamber and rotationally driven around a support shaft erected along the transport direction of the harvested culm as a fulcrum. Is provided,
The handling cylinder is provided with a scraping portion constituting the front end portion of the handling cylinder and a handling processing portion connected to the rear end of the scraping portion.
The handling processing unit has a plurality of handling cylinder frames supported so as to be arranged at intervals in the circumferential direction of the handling cylinder, and a plurality of handling teeth protruding outward from the handling cylinder frame. ,
The support shaft is composed of a rod-shaped member extending from the front portion of the scraping portion to the rear portion of the handling processing portion.
A first support plate located at the rear of the scraping portion and supporting the front portion of the handling cylinder frame is provided at the front portion of the support shaft.
A third support plate for supporting the rear portion of the handling cylinder frame is provided at the rear portion of the support shaft.
Each of the handling cylinder frames is composed of one rod-shaped member extending from the front portion to the rear portion of the handling processing portion, and the handling cylinder is formed between the first support plate and the third support plate on the support shaft. A second support plate is provided to support the frame
All the teeth are supported by only one body frame so as not to straddle the plurality of body frames, and all the teeth are supported by only one body frame.
In each of the handling body frames, the first support plate, the second support plate, and the third support plate are supported by the support shaft, and the scraping portion is the front portion of the first support plate. while keeping the position in the扱歯in supporting the state of the entire culm on type combine configured detachably from the first supporting plate and said second supporting plate and said third supporting plate. The support shaft is rotatably erected over the front wall and the rear wall of the handling chamber while penetrating the first support plate, the second support plate, and the third support plate.
The handling body frame is arranged between the first support plate and the third support plate.
The second support plate is arranged inside the handling cylinder in the radial direction of the handling cylinder frame.
The all-culm loading type combine according to claim 1, wherein the handling body frame is configured to be detachable with the support shaft erected between the front wall and the rear wall of the handling chamber. The scraping portion is provided on a truncated cone-shaped base and an outer circumference of the base portion, and the cut grain culm supplied and conveyed to the handling chamber is directed rearward as the handling cylinder rotates around the support shaft. Has spiral teeth that are scraped and transported
The spiral tooth is provided so that the rear end portion of the spiral tooth does not protrude from the rear end of the base portion toward the handling processing portion, and the handling is located on the most superior side in the transport direction among the plurality of handling teeth. The teeth are provided at a distance from the rear end of the base, and a connecting portion between the handling frame and the first support plate is provided at a position corresponding to this distance.
The tooth handling tooth located on the lowermost side in the transport direction among the plurality of handling teeth is provided with a gap from the rear end of the handling body frame, and the handling body frame and the handling body frame are located at positions corresponding to this distance. The full-culm throw-in type combine according to claim 1 or 2, which is provided with a connecting portion with the third support plate. Below the handling section, a receiving net for leaking the threshed product in the handling section is provided.
The rear end of the receiving net is terminated on the upper side in the transport direction from the rear end of the handling processing unit, and the outlet is provided on the lower side in the transport direction than the rear end of the receiving net.
The rear portion of the handling cylinder is arranged so as to be located behind the rear end of the receiving net and face the culm opening.
The distance between the handle tooth located on the lower side in the transport direction and the rear end of the handle body frame among the plurality of handle teeth is the distance between the handle tooth located on the upper side in the transport direction and the rear end of the scraping portion. The all-culm input type combine according to any one of claims 1 to 3, which is provided wider than the interval between the two. The handling tooth is composed of a rod-shaped member on a straight line.
The handling chamber is provided with a top plate that covers the upper side of the handling cylinder.
A plurality of dust transmission valves are installed inside the top plate so as to be spaced apart from each other in the front-rear direction.
The plurality of dust feeding valves are configured to guide the threshed product transported to the upper part of the handling chamber as the handling cylinder rotates toward the lower side in the transport direction.
The method according to any one of claims 1 to 4, wherein the distance between adjacent dust valves among the plurality of dust valves is set to be larger than the distance between adjacent teeth in the front-rear direction in the handling processing unit. All-culm input type combine. In a plan view, the plurality of dust feeding valves guide the cut grain culm toward the lower side in the transport direction as the scraping portion rotates to the portion of the top plate equipped with the scraping portion. Equipped with a dust valve for parts
In a plan view, the scraping valve for the scraping portion has a portion of the top plate equipped with the scraping portion and the top plate in a state where the upper portion in the transport direction is inserted into the scraping portion side. The all-culm input type combine according to claim 5, which is deployed over the portion equipped with the handling processing unit in the above. The all-culm harvester combine according to any one of claims 1 to 6, wherein the plurality of handling barrel frames function as a handling treatment member acting on the threshed product.

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