JP6719516B2 - Threshing structure of whole culm type combine harvester - Google Patents

Description

The present invention is equipped with a spiral blade at the front end of the handling cylinder, which scrapes and conveys the harvested culm supplied and conveyed toward the front end toward the rear as the handling cylinder rotates. It relates to the threshing structure of culm-type combine harvesters.

The threshing structure of the all culm throw-in type combine is as follows: Attached to the cylindrical peripheral surface of the two screw threads that are connected to the rear end of each scraping screw, and each screw has a large number of handle teeth and a plurality of partial spirals having a longer length in the handle cylinder circumferential direction than each handle tooth. There is one in which the feed blades are detachably bolted so that they are alternately positioned and project outward from the screw. As a result, with the driving rotation of the handling cylinder main body, the object to be processed is threshed by the action of the handling teeth, and the object to be processed is conveyed backward by the action of the screw or the like (see, for example, Patent Document 1).
Japanese Patent Laid-Open No. 07-107844 (paragraph numbers 0013 to 0014, FIGS. 1 and 2)

In the all-culm throw type combine, since the whole cut grain culm is supplied and conveyed as the object to be processed toward the front end of the handling barrel, only the tip end of the harvested grain culm is treated as the processed object and the front end of the handling barrel is treated. The amount of processing is greater than that of a self-removing combine that is fed and conveyed toward. In addition, when the whole cut grain culm is supplied and conveyed as the object to be processed toward the front end of the handling barrel, it is compared with the case where only the tip side of the cut grain culm is fed and conveyed toward the front end of the handling barrel. As a result, foreign matter such as mud is likely to be supplied and conveyed as the object to be processed toward the front end of the handling cylinder together with the cut grain culm.

Therefore, in the all culm throw type combine, as compared with the self-removing combine, there is a disadvantage that the portion that acts on the object to be processed with the rotation of the handling cylinder is worn due to contact with the object to be processed. It is easy to occur.

In particular, the spiral blade (screw-in screw) installed at the front end of the handling cylinder causes all the objects to be fed and conveyed to the front end of the handling cylinder as the machine travels, as the handling cylinder rotates. Then, it is scraped and conveyed toward the rear threshing treatment area, and since it comes into violent contact with a large amount of objects to be treated during the harvesting work, it may be significantly worn during long-term use.

When such abrasion occurs, it is formed between the spiral blade and a conveyance assisting guide arranged below the spiral blade to assist the scrape conveyance of the harvested grain by the spiral blade. The gap between them becomes large, and it becomes difficult for the spiral blade to scrape and convey the harvested culm received by the conveyance auxiliary guide.

In other words, in the all culm throw type combine, when the spiral blade is significantly worn due to long-term use, the scraping and conveying action of the spiral blade on the cut grain culm is reduced, and as a result, the threshing treatment capacity is reduced. Will be invited.

As a method of avoiding such a decrease in threshing treatment capacity, it is conceivable to replace spiral blades worn by long-term use, etc. It is only necessary to detachably attach a large number of handling teeth and a plurality of partial spiral feed blades to each screw mounted on the cylindrical peripheral surface of the handling cylinder main body. Since the spiral blade is not detachably attached to the surface, if the spiral blade is significantly worn due to long-term use, it is necessary to take a large-scale treatment such as replacing the entire handling cylinder main body with the spiral blade. It will be.

In other words, in the all culm throw-in type combine based on the conventional technology, it takes a considerable amount of time and cost to perform appropriate measures against wear of spiral blades, etc. It has been difficult to avoid the decline of.

An object of the present invention is to make it possible to easily and inexpensively perform appropriate measures against wear of a spiral blade or the like, and to easily avoid a decrease in threshing treatment capacity due to wear of the spiral blade or the like.

The features of the present invention are:
An all-cule-type combine combine equipped with spiral blades at the front end of the handling barrel for scraping and transporting the cut culm supplied and transported toward the front end toward the rear as the handling barrel rotates. The threshing structure of
By being arranged below the handling cylinder so as to cover the front end of the handling cylinder from below, the cutting culm that has been fed and conveyed toward the front end of the handling cylinder is received, and the cutting by the spiral blade is performed. Provided with a transportation assistance guide that assists in the transportation of scraped grain
The transport auxiliary guide is configured to be removable,
A support frame extending along the front-rear direction on the left and right sides of the handling cylinder,
The support frame supports a top plate that covers the handling cylinder from above,
The upper end of the conveyance assisting guide is detachably attached to the support frame,
A first bent portion that bends along the upper surface of the support frame is formed at the upper end portion of the conveyance assisting guide,
Said first fold bend, Ri the connected from above in a state of being placed on the top surface of the support frame by the first connector Thea,
The portion located above the first coupling of the top plate, characterized that you have been the enter portion first connector enters is formed.

According to this characteristic configuration, when the conveyance assist guide is significantly worn due to violent contact with a mowing grain culm or the like for a long period of time, only the worn conveyance assist guide can be replaced. As a result, for example, as compared with the case where the transfer auxiliary guide is non-detachably mounted on the support frame by welding or the like, the labor and cost required for replacing the worn transfer auxiliary guide can be significantly reduced. It becomes easy to replace the worn auxiliary conveyance guide. Further, since it becomes easy to replace the worn auxiliary conveyance guide, the gap formed between the spiral blade and the auxiliary conveyance guide, which may be caused when the abrasion of the auxiliary conveyance guide is left, becomes large. As a result, it is possible to easily avoid the inconvenience that the scraping and conveying action of the spiral blade on the cut grain culm is reduced, and the threshing processing capability is reduced with the reduction.

By the way, with the rotation of the handling cylinder, the harvested culms etc. scraped and conveyed backward by the spiral blades are affected by the rotation of the handling cylinder, and the lower part of the transport auxiliary guide in the rotation direction of the handling cylinder. Will be gathered together. Therefore, in the conveyance assisting guide, the portion located on the lower side in the rotation direction of the handling cylinder comes into contact with the harvested culm violently, and wear due to the contact is likely to occur.

In consideration of this point, if the lower part of the handling cylinder in the direction of rotation of the transport assist guide is configured to be detachable, violent contact with the harvested culm, etc. for a long period of time causes the lower direction of rotation of the handle in the transport assist guide. If the side parts become significantly worn, only the worn part can be replaced. As a result, it is possible to further reduce the cost required for replacement, as compared with the case where the entire transport auxiliary guide is replaced.

Therefore, by performing a simple improvement such that at least the portion of the conveyance assistance guide located on the lower side in the rotation direction of the handling cylinder is attachable/detachable, appropriate measures for abrasion of the conveyance assistance guide can be simplified. In addition, the cost can be reduced, and as a result, it is possible to easily avoid a decrease in the threshing processing capability due to the abrasion of the conveyance assisting guide.
Furthermore, in the present invention,
It is preferable that the left and right outer ends of the first bent portion are formed with bent portions that bend upward.
Furthermore, in the present invention,
With a net for covering the lower side of the handling cylinder from below,
The upper end of the receiving net is detachably attached to the support frame,
A second bent portion that is bent along the upper surface of the support frame is formed at the upper end of the receiving net,
The second bent portion is connected by a second connecting member from above in a state of being placed on the upper surface of the support frame,
It is preferable that a part of the top plate located above the second connector is formed with a recess into which the second connector is inserted.
Furthermore, in the present invention,
It is preferable that a bent portion that bends upward is formed at the left and right outer ends of the second bent portion.
Furthermore, in the present invention,
Wherein the supporting frame, it is preferable that there Bei Ete above the axis of rotation of the threshing drum.
Furthermore, in the present invention,
On the inner surface of the top plate, a plurality of dust delivery valves are provided,
It is preferable that a plate member that is detachable is provided between the inner surface of the top plate and the dust delivery valve at the left and right ends of the top plate.
Furthermore, in the present invention,
It is preferable that a portion of the conveyance assisting guide that is below the guide surface and is not the guide surface is connected to the front wall of the threshing device.
Furthermore, in the present invention,
It is preferable that a portion that is not the guide surface is connected to the front wall from the front by a connecting tool that faces forward and backward.
Furthermore, in the present invention,
In a front view, the guide surface of the conveyance assisting guide is configured such that the upper portion is wider than the lower portion,
In a plan view, the guide surface of the conveyance assisting guide is preferably configured such that the rear portion is wider than the front portion.

Overall side view of all culm input type combine Overall plan view of all culm throw 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 The top view of the principal part which shows the structure of a handling cylinder and a conveyance assistance guide. A cross-sectional plan view of the main part showing the structure of the handling cylinder Sectional drawing of the principal part which shows the attachment structure of a spiral blade. Rear view of the handle barrel showing the structure 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 a main portion showing the configuration of the seam member. A 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 guide. A vertical cross-sectional side view of essential parts showing the configuration of the conveyance assist guide. Perspective view of essential parts showing structure of receiving net Perspective view of essential parts showing structure of chaff sheave

Fig. 1 shows the overall side view of a whole culm-type combine harvester for harvesting rice and wheat. FIG. 2 shows the overall plane. As shown in these drawings, in the all-culm throw-in type combine, an engine 2, a transmission (not shown), etc. are mounted on the right front part of a machine body frame 1 formed of square pipe steel or the like. A pair of left and right crawler type traveling devices 3 driven by the power from the engine 2 transmitted via a transmission and the like are provided in the lower portion of the machine body frame 1. To the front part of the machine body frame 1, a harvesting/conveying device 4 for harvesting the planted grain culms to be harvested and transporting the harvested culm to the rear is swingably connected. On the left half of the machine body frame 1, a threshing device 5 for carrying out a threshing process on the harvested culm from the reaping and conveying device 4 and a sorting process for the processed products obtained by the threshing process is mounted. ing. A bagging device 6 that stores the grains from the threshing device 5 and that enables the stored grains to be bagged is mounted on the right half of the machine body frame 1. A boarding operation unit 7 is formed on the right front portion of the machine body frame 1.

In the left and right crawler type traveling devices 3, a steering system (not shown) is operated based on a lateral swinging operation of a cross swinging type neutral return type control lever 8 provided in the boarding operation unit 7. By doing so, the straight traveling state in which they are driven at a constant speed and the turning state in which they are differential are configured to be switched and exposed.

A divider 9 is provided at each of the left and right ends of the front end of the reaping and conveying device 4 to separate planted culms into planted culms to be harvested and planted culms not to be harvested as the machine runs. Has been done. Above the front part of the reaping and conveying device 4, there is provided a rotary reel 10 for scraping the tip side of the planted grain culms to be harvested, which are separated by the dividers 9 on the left and right sides, to the rear. At the bottom of the harvesting and conveying device 4, a cutting mechanism 11 for cutting the plant side of the planted grain culm to be harvested is provided. Behind the cutting mechanism 11, an auger 12 is provided which collects planted culms (cutted culms) after cutting by the cutting mechanism 11 at predetermined positions in the left-right direction and sends them backward from the predetermined positions. There is. At a predetermined position of the auger 12, a feeder 13 including a conveyor that feeds and conveys the cut culm sent from the predetermined position toward the threshing device 5 is equipped.

The reaping and conveying device 4 swings up and down with the connection point between the machine body frame 1 and the feeder 13 as a fulcrum by the operation of a hydraulic lifting cylinder (not shown) that is laid across the machine body frame 1 and the feeder 13. The operation of the lifting cylinder is controlled by switching the operating state of a control valve (not shown) that controls the flow of hydraulic oil to the lifting cylinder based on the swinging operation of the control lever 8 in the front-rear direction. That is, by swinging the control lever 8 in the front-rear direction, the cutting and conveying device 4 can be moved up and down, and cutting height adjustment for changing the height position of the cutting mechanism 11 with respect to the planted culm can be performed. Is configured.

As shown in FIGS. 3 to 5, a threshing chamber 14 is formed in the upper part of the threshing device 5. The handling chamber 14 is provided with a handling barrel 16 that rotates around a support shaft 15 extending in the front-rear direction and erected along the transfer direction of the harvested culm. Below the handling cylinder 16, a receiving net 17 formed in a U-shape when viewed from the front is provided to cover the lower side of the handling cylinder 16 from below. In the threshing device 5, a culm outlet 18 for discharging the grain culms after the threshing process to the outside of the machine is formed behind the net 17, which is the lower end of the threshing process direction. An oscillating sorting mechanism 19 is provided below the receiving net 17 to perform a sieving and sorting process on the processed material leaked from the receiving net 17. In the front lower part of the rocking sorting mechanism 19, a sorting wind is supplied toward the treated products leaking from the receiving net 17 or the treated products undergoing the sieving sorting process, and the sorted products are subjected to the wind sorting process. Kara 20 is deployed. A No. 1 recovery unit 21 for recovering the processed material that has leaked from the front side of the swing selection mechanism 19 is formed behind the Karako 20. Behind the No. 1 collecting unit 21, a No. 2 collecting unit 22 for collecting the processed material leaked from the rear side of the swing selecting mechanism 19 is formed. Behind the swing sorting mechanism 19, a discharge port 23 is formed for discharging the processed material, which does not leak from the swing sorting mechanism 19 to the rear end of the swing sorting mechanism 19, to the outside of the machine. ing. A top plate 24 that covers the upper side of the handling barrel 16 from above is provided above the handling barrel 16 so as to be opened and closed.

The handling chamber 14 is defined by a receiving net 17 that covers the handling barrel 16, a top plate 24, and the like. In the lower part of the front end of the handling chamber 14, a supply port 25 is formed to supply the whole harvested grain culm conveyed by the feeder 13 as a processed product.

The support shaft 15 of the handling cylinder 16 is rotatably installed over the front wall 26 and the rear wall 27 of the threshing device 5. Then, the handling cylinder 16 is rotationally driven clockwise in a front view with the support shaft 15 as a fulcrum by the power from the engine 2 transmitted via the Karatsu 20 or the like, and is supplied to the handling chamber 14 by this rotational drive. The harvested grain culm is subjected to threshing treatment, and the grain culm is conveyed toward the rear of the machine, which is the lower side of the threshing treatment direction, while promoting the singulation of grains.

The receiving net 17 is a concave receiving net formed in a lattice shape, receives the cutting grain culm supplied to the handling chamber 14, and assists the threshing process of the handling barrel 16 with respect to the cutting grain culm. Specifically, the receiving net 17 receives the slaughtered culms that are threshed in accordance with the rotation operation of the handling cylinder 16 while singularized grains and grains with branch stems obtained by the threshing treatment, or The processed matter such as culm generated in the threshing process is leaked to the lower swing sorting mechanism 19 while the threshing grain culm is prevented from leaking to the swing sorting mechanism 19.

The swing selecting mechanism 19 is provided with a sheave case 29 having a frame shape in a plan view which is swingably driven in the front-rear direction by a cam type drive mechanism 28. On the upper part of the sheave case 29, a grain pan 30 for rough selection, a chaff sheave 31, and a straw rack 32 are arranged in that order from the front side of the sheave case 29. In the lower part of the sheave case 29, a Glen pan 33 for fine selection and a Glen sheave 34 are arranged in that order from the front side of the sheave case 29. In the upper part of the rocking sorting mechanism 19, the sorting processed material leaked from the receiving 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. , Rough screening by sieving. In the lower part of the oscillating sorting mechanism 19, the sorted product leaked from the chaff sheave 31 in the state where the singulated grain and the grain with branch stem are mixed is received by the lower Glen pan 33 and the Glen sieve 34 and sieved. Perform a precise selection process by selection. As a result, the sorted product was treated with a single grain as a first grain, a mixture of grains with a branch and a culm as a second grain, and dust such as a shaving as a third grain. To sort.

The Karato 20 is driven by the power from the engine 2 transmitted through the belt type transmission mechanism 35, and is rotationally driven about its supporting shaft 20A as a fulcrum, thereby generating a selection wind. The sorting wind is supplied through the three air passages R1 to R3 toward the sorted products leaked from the receiving net 17, the sorted products sorted by the swing sorting mechanism 19, and the like. Scrap and the like having a small specific gravity is blown out from the processed product and 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 and sorting mechanism 19 as the No. 1 product in a state where dust such as straw dust has been removed by the sorting wind from the Karato 20. .. A No. 1 screw 36, which is driven by the power from the engine 2 transmitted via the Karako 20 or the like, is disposed in the left-right direction at the bottom of the No. 1 recovery unit 21. The No. 1 screw 36 conveys the No. 1 product collected by the No. 1 recovery unit 21 toward the lifting screw 37 (see FIG. 2) which is continuously provided at the right end thereof.

The No. 2 recovery unit 22 is a mixture of grains such as grain with branch branches and culm that has flowed from the rear end of the Glensieeve 34 without leaking from the Glensieeve 34 of the Oscillation sorting mechanism 19 and the Oscillating sorting mechanism 19. A mixture such as grain with branch shoots and shavings that has leaked from the straw rack 32 is collected as a second product. A No. 2 screw 38 driven by the power from the engine 2 transmitted via the Karako 20 or the like is arranged in the left-right direction at the bottom of the No. 2 recovery unit 22. The 2nd screw 38 conveys the 2nd thing collect|recovered by the 2nd collection|recovery part 22 toward the 2nd reduction mechanism 39 (refer FIG. 2) continuously provided in the right end.

The lifting screw 37 lifts the 1st thing conveyed by the 1st screw 36, and supplies it to the grain tank 40 provided in the upper part of the bagging apparatus 6 (refer FIG.1 and FIG.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 culms that do not leak from the receiving net 17 and flow down from the culm port 18, and debris that has been sorted and conveyed to the rear of the rocking sorting mechanism 19 by sieving sorting processing or wind sorting processing. Discharge to the outside of the aircraft.

As shown in FIGS. 3 to 9, the handling cylinder 16 includes a frustoconical scraping portion 41 forming a front end portion thereof, and a scraping processing portion 42 connected to a rear end of the scraping portion 41. Has been done. On the outer peripheral surface of the scraping unit 41, two cutting culms, which are fed and fed by the feeder 13 to the supply port 25, are scraped and transported toward the rear handling unit 42 as the handling barrel 16 rotates. The spiral blade 43 is equipped.

The handling unit 42 is a first plate 44 integrally mounted on the front portion of the support shaft 15, a second plate 45 integrally mounted on the front and rear intermediate portions of the support shaft 15, and a third plate integrally mounted on the rear end of the support shaft 15. The plate 46 and the six pipes 44-46, which are supported in a front-rear posture along the support shaft 15 so as to be lined up at regular intervals in the circumferential direction of the handle cylinder 16, are made of steel pipe or the like. The body frame 47 and a plurality of handling teeth 48 provided on each of the handling body frames 47 so as to be arranged at predetermined intervals in the front-rear direction in a posture of projecting from the handling body frame 47 toward the outside of the handling body 16. , And so on.

That is, the handling body 16 is provided with a plurality of handling teeth 48 projecting outwardly, which are aligned and arranged at predetermined intervals in the circumferential direction and the front-back direction of the handling processing unit 42. Further, the handling cylinder 16 is formed so that the internal space S of the handling processing unit 42 communicates with the handling chamber 14 and allows the processing object to enter the internal space S. As a result, when the handle cylinder 16 is rotated, the handle body frame 47 and the handle teeth 48 are struck against the workpieces while stirring the workpieces around them and the workpieces that have entered the internal space S. Threshing treatment such as carding is performed.

Moreover, even if a large amount of harvested culm is supplied to the handling room 14 as a processed product by communicating the internal space S of the handling processing section 42 with the handling room 14, the internal space S of the handling processing section 42 is supplied. Can be effectively used as a processing space for threshing processing. As a result, it is possible to avoid retention of the processed material in the processing space and saturation of the processing space. As a result, the processed product leaks from the concave 3 without sufficient threshing process due to the retention of the processed product or the saturation of the processing space, or the load required for the threshing process increases and the handling cylinder 16 is exposed. It is possible to avoid inconveniences such as damage to the transmission system.

Then, when the handling cylinder 16 is rotated, not only the plurality of handling teeth 48 but also the six handling body frames 47 forming the handling processing portion 42 of the handling body 16 are the handling processing members acting on the processed object. Since it functions, threshing performance and threshing efficiency can be improved.

Further, in the front-rear intermediate portion of the handling cylinder 16 in which a large amount of grains are made into a single grain by the threshing processing on the front side of the handling barrel 16 and leak from the receiving net 17, the handling barrel 16 The second plate 45 that separates the inner space S in the front and rear blocks the flow of the processed material in the inner space S of the handling cylinder 16 to the lower side in the threshing processing direction, and the processed material is handled as the handling cylinder 16 rotates. To promote the threshing due to the impact of the handling tooth 48 or the like on the processed material or the combing, and the leakage of the singulated grain from the receiving net 17. As a result, single grained grains and ungrained grain culms and the like contained in the processed product pass through the internal space S of the handling barrel 16 and are formed at the lower side end of the grain graining direction along with the grain culm. It is possible to prevent the occurrence of loss No. 3 due to being discharged from 18.

Further, when the handling cylinder 16 is rotated, the cut culm that is scraped and conveyed by the action of the scraping unit 41 and the outside air sucked from the supply port 25 as the spiral blade 43 rotates around the handling cylinder 16. It smoothly flows into the internal space S of the handling unit 42. As a result, it is possible to prevent the waste such as shavings generated by the threshing process from flowing out from the supply port 25 to the feeder 13, and more quickly convey the processed product to the lower side in the threshing process direction.

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 has a cutting mechanism 11 and an auger 12 and the like. Since the carry-out port (not shown) for carrying out the collected grain culverts formed in the mowing and collecting section of No. 4 and the supply port 25 are communicated with each other, the suction by the rotation of the spiral blades 43 during the rotation operation of the handling cylinder 16 is performed. Due to the action, dust such as shavings generated in the mowing process and the collecting process in the mowing and collecting unit is also discharged from the carrying port of the mowing and collecting unit through the internal space of the feeder 13 and the supply port 25 together with the outside air. It flows into the surroundings and the internal space S of the handling processing unit 42. As a result, it is possible to suppress the buildup and rise of culm and debris in the cutting and collecting section, and the poor conveyance of the cut grain culm due to the buildup of deposits and the deterioration of the work environment and visibility due to the rise. Can be suppressed.

Each of the plates 44 to 46 has a circular shape with the support shaft 15 as a center, and the handling barrel frame 47 is bolted to the outer peripheral side at a position equidistant from the support shaft 15. That is, on the outer peripheral side of each of the 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. As a result, it is possible to prevent the cut grain culm from being wound around the handling cylinder 16.

Each handling barrel frame 47 is capable of changing its orientation into a normal posture in which the front-rear direction is aligned with the front-rear direction of the handling barrel 16 and a reverse posture in which the front-rear direction is opposite to the front-rear direction of the handling barrel 16, and The plates 44 to 46 are bolted so that the front and rear directions of the adjacent handling body frames 47 are reversed.

A plurality of mounting holes 47A, 47B for enabling the handling teeth 48 to be attached are arranged in each handling barrel frame 47 in a state in which they are aligned at a constant pitch P in the front-rear direction, and are attached from the front end of the handling barrel frame 47 to the front. The distance L1 to the center of the hole 47A and the distance L2 from the rear end of the handle barrel frame 47 to the center of the last mounting hole 47A are different by a half pitch (=1/2P). ..

Each of the handling body frames 47 is connected to and supported by each of the plates 44 to 46 in a state in which the front-rear direction of the adjacent ones is reversed. Thereby, while adopting the same configuration as the six handling body frames 47, the handling teeth 48 provided in each of the handling body frames 47 are arranged in the front-rear direction with the handling teeth 48 of the adjacent handling body frames 47. It can be positioned with a displacement of half a pitch. As a result, it is possible to reduce the striking interval of the handling teeth 48 against the processed object without reducing the spacing between the adjacent handling teeth 48.

In other words, while the cost is reduced by making the handling barrel frames 47 have the same configuration, and as the spacing between the adjacent handling teeth 48 is reduced, it is more likely to be caused. It is possible to improve threshing performance by increasing the number of times the handle teeth 48 hit the processed product while effectively preventing the processed product from being clogged.

Further, since each handling barrel frame 47 is provided so as to be capable of changing its orientation between the normal posture and the inverted posture, the handling teeth 48 located on the upper side in the threshing process direction, which is relatively easily worn due to the large amount of processed material, is worn. If it becomes remarkable due to long-term use, the direction of each handling barrel frame 47 is changed, so that the plurality of handling teeth 48 provided in each handling barrel frame 47 are relatively easy to wear in the direction of threshing treatment. The handle teeth 48 on the side and the handle teeth 48 on the lower side in the threshing processing direction, which are less likely to wear, can be changed in position at once. As a result, the handle teeth 48 on the lower side in the threshing process direction with less wear can be effectively used as the handle teeth 48 on the upper side in the threshing process direction with a large amount of processed material.

Of the plurality of mounting holes 47A and 47B, four (two front and rear) mounting holes 47A located at the front and rear ends of each handling barrel 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 holes 47A are made of a stepped round bar steel material having a small-diameter portion 48a inserted into the mounting holes 47A, and the center thereof is A nut is detachably attached to the handling barrel frame 47 so as to be positioned 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 handling barrel frame 47.

In other words, since the handle teeth 48A located at the front and rear ends of the handle processing unit 42 are removable, 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.

Further, on the lower side in the threshing process direction where the amount of threshed culms is large, as shown in FIG. 10, if the handling teeth 48A located at the rear end of the handling barrel 16 are thinned out, the rear end of the handling barrel is The interval between the handling teeth 48A at the portion becomes large, and it is possible to effectively suppress the retention of the shattered grain culms due to being caught by the handling teeth 48A at the rear end of the handling barrel. As a result, the release of the shattered grain culm from the culm outlet 18 can be promoted.

As shown in FIGS. 3 to 5, 11 and 12, the top plate 24 has a curved portion 24A that bends substantially along the rotational trajectory K of the tip of the treating tooth, and semicircles located at the front and rear ends of the curved portion 24A. The vertical wall portion 24B and the straight side edge portions 24C located on the left and right of the curved portion 24A are integrally provided. The top plate 24 has a closed position for covering the upper side of the handling barrel 16 from above and an open position for opening the upper side of the handling barrel 16 with a plurality of hinges 24D provided on the left side edge portion 24C as a fulcrum. The open/close swing operation is possible. The right side edge portion 24C is provided with a plurality of bolts 24E for fixing the top plate 24 in a closed state.

The curved portion 24A is curved and formed by its inner surface so as to smoothly guide the processed material conveyed toward the upper portion of the handling cylinder 16 along with the rotation operation of the handling cylinder 16. There is. On the inner surface of the curved portion 24A, a plurality of dust-sending valves 49 that guide the processed material conveyed to the upper part of the handling chamber 14 toward the lower side in the threshing processing direction in association with the rotation operation of the handling cylinder 16 are provided. It is detachably fixed in a state of being lined up with a predetermined interval in the direction. Among the plurality of dust transfer valves 49, the frontmost dust transfer 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 transfer valves 49B are disposed on the left and right side edge portions. It is formed in an arc shape over 24C.

In other words, since the top plate 24 is provided with the curved portion 24A, the processed material that has been scraped up and conveyed to the upper portion of the handling chamber 14 by the plurality of handling teeth 48 and the like in accordance with the rotation of the handling cylinder 16 is transferred to the inner surface of the curved portion 24A. It is possible to smoothly guide toward the receiving net 17 on the lower side of the threshing processing direction while being along the dust control valve 49. Further, since each dust delivery valve 49 is 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 conveyed to the upper portion of the handling chamber 14 as the handling barrel 16 rotates. It is possible to effectively improve the guiding action of each dust delivery valve 49A with respect to the processed material. As a result, each handling tooth 48 is formed not in a shape having a conveying action for the processed material but in a shape for exclusive use of threshing capable of appropriately hitting or combing the processed material, but the processed material is placed on the lower side in the threshing processing direction. As a result, it is possible to satisfactorily convey and guide the target, and as a result, it is possible to improve the threshing performance and the transport performance for the processed material.

A seam member 50 made of a bent steel plate is detachably bolted to the left and right side edge portions 24C so as to have a guide surface 50a that connects the inner surface of the curved portion 24A and the inner surface of the receiving net 17 in series. There is. As described above, since the seam member 50 in which the contact between the receiving net 17 and the top plate 24 is located at the seam and the contact with the processed product is severe is made detachable, the seamed member 50 contacts the processed product. If it is significantly worn out, only the seam member 50 can be easily replaced. In other words, for example, as in the case where the seam member 50 is irremovably welded to the top plate 24, the whole top plate 24 is replaced together with the worn seam member 50 without causing the trouble and economical disadvantage. It is possible to appropriately take measures against wear of the seam member 50.

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 so that the dust-sending valve 49 can guide the processed material well. Further, between the tips of the handle teeth 48 and the inner surface of the net 17, in order to promote the leakage of the singulated grain from the net 17, the ends of the handle teeth 48 and the dust transfer valves. A clearance larger than the clearance set with the lower edge of 49 is set.

As shown in FIGS. 3, 4, 6 to 8 and 10, in the handling cylinder 16, two support plates 41A are spirally welded to the outer peripheral surface of the scraping portion 41. Corresponding spiral blades 43 are detachably bolted to the back surface of each of the support plates 41A, with their outer edge sides projecting outward from the outer edges of the corresponding support plate 41A. There is.

That is, in this handling cylinder 16, the rotation of the cutting barrel causes the cutting culm to be fed and fed to the supply port 25 by the feeder 13 and scrapes and conveys the cutting culm to the rear, so that the cutting culm is violently contacted with the cutting barrel. Two spiral blades 43, which easily wear due to contact, are detachably attached to the scraping portion 41 of the handling cylinder 16, whereby when the spiral blades 43 are significantly worn due to long-term use. In addition, only the spiral blade 43 can be easily replaced. As a result, for example, as in the case where the spiral blade 43 is irremovably welded to the scraping section 41, the scraping section 41 is replaced together with the worn spiral blade 43 without causing the trouble and economical disadvantage. Appropriate measures can be taken against the wear of the blades 43.

Note that each support plate 41A is reinforced by a plurality of reinforcing ribs 41B welded so as to extend over the front surface thereof and the outer peripheral surface of the scraping portion 41.

As shown in FIG. 3, FIG. 4, FIG. 6, FIG. 13 and FIG. 14, in the threshing device 5, between the front wall 26 of the threshing device 5 and the receiving net 17, the reaper fed by the feeder 13 to the feeding port 25 is conveyed. A conveyance assisting guide 51 is provided to receive the grain culm and assist the scraped grain culm to be conveyed by the two spiral blades 43. The conveyance assisting guide 51 is composed of a pair of left and right guide members 51A and 51B that are bolt-connected in a substantially U-shape in a front view and cover the lower side of the scraping portion 41 from below. The left and right guide members 51A and 51B are a first plate made of stainless steel that is detachably bolted to the front wall 26 of the threshing device 5 and a pair of left and right support frames 52 arranged in the front-back direction on the upper part of the threshing device 5. A second stainless steel plate 51b forming a guide surface extending from the front wall 26 of the threshing device 5 to the net 17 is welded to the 51a.

In other words, in this threshing device 5, by assisting the scraping and conveying of the cut grain culms by the two spiral blades 43, the scraping culvert makes vigorous contact with the cut grain culms, and a conveyance assist guide that easily causes abrasion due to the contact. 51 is detachably equipped, and can be divided into a left guide member 51A on the left side of the handle 16 in the rotation direction and a right guide member 51B on the lower side of the handle 16 in the rotation direction. The left and right two-divided structure is configured so that if the entire conveyance assisting guide 51 is significantly worn due to long-term use, only the conveyance assisting guide 51 can be easily replaced. Further, when either the left or right guide members 51A and 51B of the conveyance assisting guide 51 are significantly worn due to long-term use, only the guide members 51A and 51B that are significantly worn can be easily replaced. As a result, for example, as in the case where the conveyance assisting guide 51 is irremovably welded to the receiving net 17 or the left and right supporting frames 52, the receiving assisting guide 51 is replaced with the receiving net 17 or the left and right supporting frames 52, or Even when the left or right side of the transport auxiliary guide 51 is significantly worn as in the case where the transport auxiliary guide 51 is configured to be indivisible, it is troublesome and economically disadvantageous to replace the entire transport auxiliary guide 51. Without inviting, it is possible to appropriately take measures against the wear of the conveyance auxiliary guide 51.

Moreover, since the conveyance assisting guide 51 is made of stainless steel which is resistant to corrosion and has high strength, it is possible to reduce the frequency of replacement due to wear.

As shown in FIG. 3, FIG. 5, FIG. 6 and FIG. 15, 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 is provided with a base frame 53A framed in a rectangular shape. In the frame of the base frame 53A, a plurality of vertical bars 53B made of strip-shaped steel plates are arranged in a front-rear direction in the circumferential direction of the handling cylinder 16 at regular intervals. Further, a plurality of first horizontal rails 53C made of a strip-shaped steel plate curved in an arc shape are arranged side by side in the left-right direction with a predetermined interval in the front-rear direction which is the support shaft direction of the handling cylinder 16. Further, a plurality of second horizontal rails 53D made of piano wire curved in an arc shape are aligned and arranged in the left-right direction between the first horizontal rails 53C adjacent to each other with a certain distance in the front-rear direction. .. The crosspieces formed in the frame of the base frame 53A have a horizontally long rectangular shape in which the length in the circumferential direction of the handling cylinder 16 is longer than the length in the front-rear direction. Arrangement intervals of 53B to 53D are set.

That is, it is considered that during the threshing process in which the handling cylinder 16 is rotationally driven, the single-grained grains and the like obtained by the threshing process for the cut culms flow in the rotation direction as the handling cylinder 16 rotates. Then, the receiving net 17 is configured such that the mesh thereof has a horizontally long rectangular shape that is long in the rotation direction of the handling cylinder 16. Thereby, as compared with the case where the mesh 17 is configured to have a vertically long rectangular shape whose mesh is long in the threshing processing direction (front-back direction) of the handling cylinder 16, the single-grained grain and the like are received. It is easy to leak from the front side. As a result, it is possible to effectively suppress the occurrence of exfoliated grains due to the leakage of the singulated grains from the front side of the receiving net 17 being suppressed. Further, by forming each net member 53 in the same shape, it is possible to improve the productivity and the assembling property of the net 17.

As shown in FIGS. 3 and 16, the rough selection chaf sheave 31 is composed of a single selection plate 54 that is bolted to the sheave case 29 in a rearwardly inclined posture, which is located higher toward the lower side in the selection direction. Has been done.

A plurality of leakage holes 54A formed in a rectangular shape in a plan view are provided between the leakage holes 54A in the front row on the front side of the sorting plate 54 (a region on the front side with respect to the entire sorting plate 54). Are formed in a staggered arrangement in which the leakage holes 54A in the rear row are located. A plurality of leakage holes 54B and 54C formed in a rectangular shape in a plan view having selection pieces 54a and 54b are provided on the rear side of the selection plate 54 (a rearward region of the selection plate 54 of about 2/3). , And the leakage holes 54B and 54C in the rear row are arranged between the leakage holes 54B and 54C in the front row in a staggered arrangement.

Of the sorting pieces 54a and 54b, the sorting piece 54a located on the left-right center side of the sorting plate 54 is formed in a scaly shape that is narrower and closer to the lower side in the sorting direction. The sorting pieces 54b located at the left and right ends of the sorting plate 54 are rectangular and shorter than the sorting piece 54a on the left and right center side, 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, the chaf sheave 31 is configured by arranging a plurality of chaf sheaves made of strip steel plates aligned in the front-rear direction at regular intervals. It is possible to simplify the configuration and reduce the cost as compared with the case of performing.

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 product having a high content rate of the singulated grain is supplied, the front portion of the chaff sheave 31 is formed. A large amount of singulated grain leaks from the side to the Glen pan 33 and Glen sieve 34 below. As a result, the recovery rate of the singulated grain in the first recovery unit 21 located below the Glen pan 33 and the Glen sieve 34 can be increased.

In addition, since the leak holes 54B and 54C provided with the sorting pieces 54a and 54b are formed in a staggered arrangement in the front-rear, left-right, and rearward directions on the rear side of the chaff sheave 31, in the sieving sorting process, the sorted products on the chaff sheave 31 are It will be evenly distributed in the left-right direction. This can promote the leakage of the singulated grain from the leakage holes 54B and 54C.

Further, by installing the chaff sheave 31 in a rearwardly inclined posture, as compared with the case where the chaff sheave 31 is installed in a horizontal posture, the chaff sheave 31 puts the sorted products upward in the sorting process direction in the sieving sorting process. The force to push it toward becomes large. Therefore, during the sieving/sorting process, the conveyance of the sorted product to the lower side in the sorting direction is suppressed, and the vertical movement of the sorted product becomes severe, so that the sorting of the sorted products by the specific gravity difference becomes more effective. Therefore, the leakage of the grains having a large specific gravity from the leakage holes 54B and 54C is promoted, and the singularized grains are discharged from the discharge port 23 to the outside of the machine. Can be effectively suppressed, and as a result, the grain collection efficiency can be improved.

In addition, since the sorting pieces 54b at the left and right ends of the chaff sheave 31 are formed to be shorter than the sorting pieces 54a at the center of the left and right sides, the sorting pieces 54b on the left and right ends of the chaff sheave 31 from which the sorting-processed material is likely to deposit are leaked from the leak holes 54C. Leakage of grains and the like can be promoted. As a result, it is possible to avoid a reduction in the sorting efficiency due to the accumulation of the sorted products at the left and right ends of the chaff sheave 31.

By the way, the ratio of the leakage holes 54A not provided with the sorting pieces 54a, 54b formed on 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. The leak holes 54C 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 are directed toward the second plate 45 of the handling cylinder 16 through the air passage R4 formed in the sheave case 29. Is set to flow. As a result, the processed material, which is prevented from flowing toward the lower side in the threshing processing direction by the second plate 45, can be transported by wind toward the periphery of the handling cylinder 16. As a result, it is possible to avoid in advance the possibility that the processed material will be accumulated at a position just before the second plate 45 and hinder the threshing process.

As shown in FIGS. 3 and 6, the handle barrel 16 has a handle tooth 48</b>A located at the rear end thereof located rearward of the rear end of the receiving net 17 so as to face the outlet 18. That is, at the rear end of the handling cylinder 16, since the receiving net 17 is not present, a relatively large space is formed around the receiving net 17. As a result, even if the shredded culms are entangled with the shredding teeth 48A at the rear end of the shroud, the shattered culms come out of the tips of the shredding teeth 48A due to the centrifugal force associated with the rotation of the shroud 16. .. As a result, it is possible to effectively suppress the retention of the shattered grain culms due to being caught by the handling teeth 48A at the rear end of the handling body 16, and to promote the release of the shattered grain culms from the culm outlet 18. it can.

[Another embodiment]

[1] As the handling cylinder 16, the handling processing section 42 is provided on the outer circumference of the barrel so as to be continuous with the cylindrically shaped barrel section and the two spiral blades 43 provided in the scraping section 41. It may be configured in a drum type by a plurality of screws, and a large number of handle teeth detachably mounted at predetermined intervals on the outer peripheral portion of each screw so as to project outward. ..

[2] As the handling cylinder 16, a single spiral blade 43 may be detachably attached to the outer peripheral surface of the front end portion 41, and three or more sheets may be attached to the outer peripheral surface of the front end portion 41. The spiral blade 43 may be detachably attached.

[3] As the handling cylinder 16, a plurality of support fittings to which the spiral blades 43 are detachably attached may be arranged and arranged in a spiral shape on the outer peripheral surface of the front end portion 41 thereof.

[4] The spiral blade 43 may be configured by arranging a plurality of blade-shaped members in a spiral arrangement on the outer peripheral surface of the front end portion 41 of the handling cylinder.

[5] The conveyance assisting guide 51 may be configured so that it cannot be divided into left and right parts, or may be divided into three or more parts.

[6] The transport auxiliary guide 51 may be configured such that only the portion 51B located on the lower side in the rotation direction of the handling cylinder 16 is detachable.

[7] A steel material such as carbon steel other than stainless steel may be adopted as the material of the conveyance assisting guide 51.

[8] The seam member 50 may be detachably attached to the receiving net 17.

15 Rotating Shaft of Handling Cylinder 16 Handling Cylinder 17 Receiving Net 24 Top Plate 26 Front Wall of Threshing Device 41 Front End of Handling Cylinder 43 Spiral Blade 49 Dust Valve 50 Plate Member 51 Transfer Aid Guide 52 Support Frame

Claims (9)

An all-cule-type combine combine equipped with spiral blades at the front end of the handling barrel for scraping and transporting the cut culm supplied and transported toward the front end toward the rear as the handling barrel rotates. The threshing structure of
By being arranged below the handling cylinder so as to cover the front end of the handling cylinder from below, the cutting culm that has been fed and conveyed toward the front end of the handling cylinder is received, and the cutting by the spiral blade is performed. Provided with a transportation assistance guide to assist in the transportation of the scraps into the grain,
The transport auxiliary guide is configured to be removable,
A support frame extending along the front-rear direction on the left and right sides of the handling cylinder,
The support frame supports a top plate that covers the handling cylinder from above,
The upper end of the conveyance assisting guide is detachably attached to the support frame,
A first bent portion that bends along the upper surface of the support frame is formed at the upper end portion of the conveyance assisting guide,
Said first fold bend, Ri the connected from above in a state of being placed on the top surface of the support frame by the first connector Thea,
Threshing structure of the a portion located above the first connector, the entire culm on type combine that is the enter portion first connector enters the forming of the top plate. The threshing device for a whole culm-type combine harvester according to claim 1, wherein a bent portion that bends upward is formed at left and right outer ends of the first bent portion. With a net for covering the lower side of the handling cylinder from below,
The upper end of the net is detachably attached to the support frame,
A second bent portion that is bent along the upper surface of the support frame is formed at the upper end of the receiving net,
The second bent portion is connected by a second connecting member from above in a state of being placed on the upper surface of the support frame,
The threshing structure of the all-culm throw-in type combine harvester according to claim 1 or 2, wherein an entrance portion into which the second connector is inserted is formed in a portion of the top plate located above the second connector. The threshing device for an all-cullet-type combine harvester according to claim 3, wherein a bent portion that bends upward is formed at left and right outer ends of the second bent portion. Wherein the support frame, all culm-input combine threshing apparatus according to any one of 4 claims 1 in Bei Ete above the axis of rotation of the threshing drum. On the inner surface of the top plate, a plurality of dust delivery valves are provided,
The all culm throw-in type combine harvester according to any one of claims 1 to 5, further comprising a plate member that is attachable/detachable between an inner surface of the top plate and the dust feed valve at left and right end portions of the top plate. Threshing equipment. The threshing of the all-culm input type combine harvester according to any one of claims 1 to 6 , wherein a portion of the transport auxiliary guide that is below the guide surface and is not the guide surface is connected to a front wall of the threshing device. Construction. The threshing structure of the all culm throw-in type combine harvester according to claim 7 , wherein a portion that is not the guide surface is connected to the front wall from the front by a connecting tool that faces forward and backward. In a front view, the guide surface of the conveyance assisting guide is configured such that the upper portion is wider than the lower portion,
The threshing structure of the all-culm throw-in type combine harvester according to any one of claims 1 to 8 , wherein a rear side portion of the guide surface of the conveyance assisting guide is wider than a front side portion in a plan view.

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