JP2019030298A - Threshing structure of whole-culm-feeding type combine harvester - Google Patents

Abstract

To provide a threshing structure of a whole-culm-feeding type combine harvester easily avoiding decrease in a threshing capacity caused by abrasion of spiral blades or the like by easily and inexpensively taking appropriate measures against the abrasion of the spiral blades or the like.SOLUTION: The threshing structure of the whole-culm-feeding type combine harvester, includes spiral blades 43 at a front end 41 of a threshing cylinder 16 for scooping and conveying reaped grain culms that have been feedingly conveyed toward the front end 41 thereof, to the rearward, with the rotation of the threshing cylinder 16.SELECTED DRAWING: Figure 4

Description

  In the present invention, the front end of the handling cylinder is equipped with a spiral blade that scrapes and conveys the harvested cereal meal fed and conveyed toward the front end toward the rear along with the rotation of the handling cylinder. It relates to the threshing structure of a straw-type combine harvester.

As a threshing structure for a full throw-in type combine harvester, two scraping screws (spiral blades) for scraping the workpiece are attached to the front thin peripheral surface formed on the front end side of the barrel body. Two cylindrical screws connected to the rear end of each of the scribing screws are attached to the cylindrical peripheral surface, and each screw has a large number of teeth and a plurality of partial spirals whose length in the circumferential direction of the barrel is larger than each tooth. In some cases, the blades are detachably bolted so that they are alternately positioned and project outward from the screw. Thereby, along with the driving rotation of the barrel body, the object to be processed is threshed by the action of the tooth handling, and the object to be processed is conveyed backward by the action of a screw or the like (see, for example, Patent Document 1).
JP-A-07-107844 (paragraph numbers 0013 to 0014, FIGS. 1 and 2)

  Since the whole harvesting type combine is fed and transported as a processed object toward the front end of the barrel, only the tip side of the harvested grain is treated as the treated end. Compared with the self-removing combine that feeds and conveys toward the vehicle, the amount of processing increases. In addition, when feeding and transporting the whole of the harvested cereal basket toward the front end of the handling cylinder as an object to be processed, it is compared to supplying and transporting only the tip of the harvested grain basket toward the front end of the handling cylinder. Thus, there is a high possibility that foreign matters such as mud will be supplied and conveyed toward the front end of the barrel as the object to be processed together with the harvested cereal.

  Therefore, in the all-throw-in type combine, there is an inconvenience that the portion acting on the object to be processed with the rotation of the handling cylinder is worn by contact with the object to be processed, as compared with the self-removing type combine. It tends to occur.

  In particular, the spiral blade (scraping screw) installed at the front end of the barrel is used to move all the workpieces supplied and conveyed to the front end of the barrel along with the rotation of the barrel. In addition, it is scraped and conveyed toward the rear threshing treatment area, and comes into violent contact with a large amount of objects to be treated at the time of harvesting work.

  And when such wear occurs, it is formed between the spiral blade and a conveyance auxiliary guide disposed below the spiral blade to assist the scraping and conveying of the harvested cereal by the spiral blade. The gap becomes larger, and it becomes difficult for the spiral blade to scrape and convey the harvested cereal grains received by the conveyance auxiliary guide.

  In other words, in the all-throw-type combine, when the spiral blades are significantly worn by long-term use, the spiral blade's scraping and conveying action on the harvested cereal culm will be reduced, resulting in a decrease in threshing processing capacity. Will be invited.

  As a method of avoiding such a decrease in the threshing capacity, it is conceivable to replace the spiral blades worn by long-term use, but as described above, the threshing structure of the all-fired combine harvester based on the prior art is , Simply attach a large number of teeth and multiple spiral feed blades to each screw attached to the cylindrical peripheral surface of the barrel body. Since the spiral blade is not detachably attached to the surface, if the spiral blade is significantly worn out due to long-term use, it is necessary to take a major measure such as replacing the entire barrel body together with the spiral blade. It will be.

  In other words, in the all-throw-in type combine combine based on the prior art, it takes considerable effort and cost to take appropriate measures against wear such as spiral blades. It has become difficult to avoid the decline.

  An object of the present invention is to make it possible to easily and inexpensively perform an appropriate treatment for wear of a spiral blade and to easily avoid a decrease in the threshing processing capacity due to wear of the spiral blade.

In order to achieve the above object, in the invention according to claim 1 of the present invention, the harvested cereal meal fed and conveyed toward the front end of the handling cylinder is used to rotate the handling cylinder. In the threshing structure of a full-throw-in type combine harvester equipped with a spiral blade that stirs and conveys toward the back,
The spiral blade is detachably attached.

  According to this characteristic configuration, when the spiral blade is significantly worn due to intense contact with the harvested cereal rice cake for a long time, only the worn spiral blade can be replaced. As a result, it is possible to significantly reduce the labor and cost required for replacing the spiral blades compared to the case where the spiral blades are detachably attached to the front end portion of the handling cylinder by welding or the like. It becomes easy to replace the blades. And, since it becomes easy to replace the worn spiral blade, the scraping and conveying action of the spiral blade against the harvested cereal culm, which may be caused when the spiral blade is left unattended, is reduced, and threshing is accompanied by the decrease. Inconveniences such as a reduction in processing capability can be easily avoided.

  Therefore, by making a simple improvement such that the spiral blade is detachably attached to the front end portion of the handling cylinder, it becomes possible to easily and inexpensively take appropriate measures against the wear of the spiral blade, and as a result, the wear of the spiral blade is reduced. Therefore, it is possible to easily avoid a decrease in the threshing processing capacity due to.

In the invention according to claim 2 of the present invention, in the invention according to claim 1,
By arranging the front end portion of the treatment cylinder from below below the treatment cylinder, the harvested cereal grains fed and conveyed toward the front end portion of the treatment cylinder are received and harvested by the spiral blade. A transport auxiliary guide is provided to assist in the squeezing and transporting of the cereal.
The conveyance auxiliary guide is configured such that at least a portion located on the lower side in the rotational direction of the handling cylinder is detachable.

  According to this characteristic configuration, when the conveyance auxiliary guide is remarkably worn due to intense contact with a harvested cereal for a long time, only the worn conveyance auxiliary guide can be replaced. As a result, for example, compared to the case where the conveyance auxiliary guide is detachably mounted on the support frame by welding or the like, the labor and cost required to replace the worn conveyance auxiliary guide can be greatly reduced. This makes it easy to replace the worn conveyance auxiliary guide. And, since it becomes easy to replace the worn conveyance auxiliary guide, a gap formed between the spiral blade and the conveyance auxiliary guide, which may be caused when the conveyance auxiliary guide is left unattended, becomes large. As a result, it is possible to easily avoid the inconvenience that the spiral blade scraping and conveying action with respect to the harvested cereal culm is reduced and the threshing processing capacity is reduced with the reduction.

  By the way, with the rotation of the handling cylinder, the harvested cereal grains etc. that are scraped and conveyed backward by the spiral blade are affected by the rotation of the handling cylinder, and the lower part of the handling cylinder in the rotation direction of the handling cylinder Will be gathered together. Therefore, in the conveyance auxiliary guide, the portion located on the lower side in the rotational direction of the handling cylinder comes into violent contact with the harvested cereal mash and the like, and wear due to the contact is likely to occur.

  In view of this point, if the lower part of the handling cylinder in the rotation direction of the conveyance auxiliary guide is configured to be detachable, the lower rotation direction of the conveyance cylinder in the conveyance auxiliary guide may be caused by intense contact with the harvested cereal rice cake for a long time. If the side portion is significantly worn, only the worn portion can be replaced. Thereby, compared with the case where the whole conveyance auxiliary guide is replaced, the cost required for replacement can be further reduced.

  Accordingly, the conveyance auxiliary guide is configured so that at least the portion located on the lower side in the rotational direction of the handling cylinder can be attached and detached, thereby making it possible to easily take appropriate measures against the wear of the conveyance auxiliary guide. In addition, it can be performed at a low cost, and as a result, it is possible to easily avoid a decrease in the threshing processing capacity due to the wear of the conveyance auxiliary guide.

In the invention according to claim 3 of the present invention, in the invention according to claim 1 or 2,
A catching net that receives the harvested cereal mash that is threshed with the rotation of the handling cylinder and leaks the processed product obtained by the threshing treatment is covered below the handling cylinder from below. Deploy,
A top plate that guides the harvested cereal grains and the processed material that are conveyed toward the upper portion of the handling cylinder as the handling cylinder rotates above the handling cylinder. Deploy to cover from above,
A seam member formed so as to have a guide surface that connects a series of inner surfaces thereof is detachably mounted between the receiving net and the top plate.

  According to this characteristic configuration, when the guide surface of the seam member is significantly worn due to intense contact with the harvested cereal rice cake for a long time, only the worn seam member can be replaced. As a result, the labor and cost required to replace the worn seam member can be greatly reduced compared to the case where the seam member is detachably attached to the receiving net or the top plate by welding or the like. It becomes easy to replace the joint member. And by facilitating replacement of the worn seam member, the inner surface of the receiving net and the inner surface of the top plate are connected in series by the guide surface of the seam member, which may be caused when the wear of the seam member is left unattended. Therefore, it is possible to easily avoid the inconvenience that the threshing processing capacity is lowered due to the fact that the harvested cereal cereals and the like do not flow smoothly across the receiving net of the handling cylinder and the top plate.

  Therefore, by performing a simple improvement such as detachably installing the seam member between the receiving net and the top plate, it becomes possible to easily and inexpensively perform an appropriate treatment for the wear of the seam member. As a result, the seam member It is possible to easily avoid a decrease in the threshing processing capacity due to the wear of the.

Whole side view of all throwing type combine harvester Overall plan view of all throwing type combine harvester Longitudinal side view of threshing device Partially longitudinal front view showing the configuration of the front end of the threshing device Partially longitudinal front view showing the configuration of the front and rear intermediate part of the threshing device Plan view of the main part showing the configuration of the handling cylinder and the conveyance auxiliary guide Cross-sectional plan view of the main part showing the configuration of the barrel Sectional drawing of the principal part which shows the attachment structure of a spiral blade Longitudinal rear view of the barrel showing the configuration of the barrel Cross-sectional plan view of the main part showing another configuration of the barrel Longitudinal front view of the main part showing the configuration of the seam member Cross-sectional plan view of the main part showing the length and arrangement of the dust delivery valve Plan view of the main part showing the configuration of the conveyance auxiliary guide Longitudinal side view of the main part showing the configuration of the conveyance auxiliary guide Perspective view of main part showing configuration of receiving network Perspective view of main part showing configuration of chaff sheave

  FIG. 1 shows the entire side view of a whole-pile type combine harvester that harvests rice, wheat, and the like. FIG. 2 shows the entire plane. As shown in these drawings, the full throw type combine has an engine 2 and a transmission (not shown) mounted on the right front portion of the body frame 1 formed of square pipe steel or the like. A pair of left and right crawler type traveling devices 3 that are driven by the power from the engine 2 that is transmitted via a transmission or the like are disposed in the lower part of the body frame 1. A cutting and conveying device 4 that cuts and conveys the planted culm to be harvested and conveys it backward is connected to the front portion of the machine body frame 1 so as to be swingable up and down. The left half of the machine body frame 1 is equipped with a threshing device 5 that performs a threshing process on the harvested cereal meal from the harvesting and conveying device 4 and performs a sorting process on the processed product obtained by the threshing process. ing. The right half of the machine body frame 1 is equipped with a bagging device 6 that stores the grain from the threshing device 5 and enables bagging of the stored grain. A boarding operation unit 7 is formed at the right front portion of the body frame 1.

  The left and right crawler type traveling device 3 operates a steering system (not shown) based on a horizontal swing operation of a cross-return type neutral return type control lever 8 provided in the boarding operation unit 7. By doing so, it is configured so that a straight traveling state in which they are driven at a constant speed and a turning state in which they are differentially displayed are displayed.

  Dividers 9 are arranged at both the left and right ends of the front end of the cutting and conveying device 4 to split the planted cereals into planted cereals to be harvested and planted cereals to be harvested as the aircraft runs. Has been. Above the front part of the cutting and conveying apparatus 4 is equipped with a rotating reel 10 that scrapes the head of the harvested planted culm separated by the left and right dividers 9 toward the rear. A cutting mechanism 11 is provided at the bottom of the harvesting and conveying device 4 to cut the stock side of the planted culm to be harvested. At the rear of the cutting mechanism 11, an auger 12 is arranged that gathers the planted cereal grains (cutted cereal grains) after being cut by the cutting mechanism 11 at a predetermined position in the left-right direction, and sends them backward from the predetermined position. Yes. A predetermined portion of the auger 12 is equipped with a feeder 13 composed of a transport conveyor that supplies and transports the harvested cereal meal fed from the predetermined portion toward the threshing device 5.

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

  As shown in FIGS. 3 to 5, a handling chamber 14 is formed in the upper part of the threshing device 5. The handling chamber 14 is provided with a handling cylinder 16 that rotates around a support shaft 15 that extends in the front-rear direction along the conveying direction of the harvested cereal. A receiving net 17 formed in a U-shape in front view that covers the lower side of the handling cylinder 16 from below is provided below the handling cylinder 16. In the threshing device 5, a throat 18 for discharging the threshing grain after the threshing process to the outside of the machine is formed behind the receiving net 17 which is the lower end of the threshing process direction. Below the receiving net 17, there is provided a swinging selection mechanism 19 that performs a sieve selection process on the processed material leaked from the receiving net 17. At the front and lower side of the swing sorting mechanism 19, the sorting wind is supplied toward the processed material leaking from the receiving net 17 and the processed material during the sieve sorting process, and the wind sorting process is performed on these processed products. Tang Dynasty 20 is deployed. A No. 1 recovery unit 21 that recovers the processed material that has leaked from the front side of the swing sorting mechanism 19 is formed behind the Kara 20. Behind the first collection unit 21 is formed a second collection unit 22 that collects the processed material leaked from the rear side of the swing sorting mechanism 19. Behind the swing sorting mechanism 19 is formed a discharge port 23 for discharging the processed material conveyed from the swing sorting mechanism 19 to the rear end portion of the swing sorting mechanism 19 without leaking. ing. A top plate 24 that covers the upper side of the handling cylinder 16 from above is provided above the handling cylinder 16 so as to be openable and closable.

  The handling chamber 14 is defined by a receiving net 17 and a top plate 24 that cover the handling cylinder 16. In the lower part of the front end of the handling chamber 14, a supply port 25 is formed through which the whole harvested cereal meal conveyed by the feeder 13 is supplied as a processed product.

  The handling cylinder 16 is constructed so that the support shaft 15 is rotatable over the front wall 26 and the rear wall 27 of the threshing device 5. The handling cylinder 16 is rotated in the clockwise direction when viewed from the front with the support shaft 15 as a fulcrum by the power from the engine 2 transmitted through the carp 20 or the like, and is supplied to the handling chamber 14 by this rotational drive. A threshing process is applied to the harvested cereal and the grain cereal is conveyed toward the rear side of the machine body, which is the lower side of the threshing process direction, while promoting the singulation of the grain.

  The receiving net 17 is a concave receiving net formed in a lattice shape, and receives the harvested cereal meal supplied to the handling chamber 14 to assist the threshing process of the handling cylinder 16 with respect to the harvested grain meal. Specifically, the receiving net 17 receives the harvested cereals that are threshed in accordance with the rotation operation of the handling cylinder 16, and the unigrained grains and the grains with branching branches obtained by the threshing process, or In addition, the processed material such as swarf generated in the threshing process is caused to leak toward the lower swing sorting mechanism 19, while leakage to the swing sorting mechanism 19 such as the threshing cereal is prevented.

  The swing sorting mechanism 19 includes a sheave case 29 having a frame shape in a plan view that is driven to swing back and forth by a cam-type drive mechanism 28. On the top of the sheave case 29, a rough sorting grain pan 30, a chaff sheave 31, and a stroller 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 fine pan 33 and a grain sheave 34 for fine selection are arranged in this order from the front side of the sheave case 29. At the upper part of the swing sorting mechanism 19, the sorted processed material leaked from the receiving net 17 in a state where single grains and swarf are mixed is received by the upper grain pan 30, chaff sheave 31, or Strollac 32. A rough sorting process is performed by sieve sorting. In the lower part of the oscillating sorting mechanism 19, the sorted processed material leaked from the chaff sheave 31 in a state where unigrained grains, grain with branches and the like are mixed is received by the lower grain pan 33 and the grain sieve 34 and sieved. Precise sorting is performed by sorting. As a result, the sorting processed product is a single grain as No. 1, a mixture such as grain with branch branch as No. 2 and sawdust, and dust such as No. 3 as waste. To sort.

  The red pepper 20 is driven by the power from the engine 2 transmitted through the belt-type transmission mechanism 35 and is driven to rotate with the support shaft 20A as a fulcrum, thereby generating a sorting wind. The sorting wind is supplied to the sorting processed material leaked from the receiving net 17 through the three air passages R1 to R3 or the sorting processed product sorted by the swing sorting mechanism 19 to be sorted. Swarf dust having a small specific gravity is blown from the processed material and conveyed toward the outlet 23 on the lower side in the threshing processing direction.

  The first collecting unit 21 collects the single-grained grains leaked from the grain sieve 34 of the oscillating sorting mechanism 19 as the first thing in a state in which dust such as straw scraps has been removed by the sorting wind from the Karatsu 20. . A first screw 36 driven by the power from the engine 2 transmitted through the carp 20 or the like is disposed on the bottom of the first recovery unit 21 in the left-right direction. The 1st screw 36 conveys the 1st thing collect | recovered in the 1st collection | recovery part 21 toward the lifting screw 37 (refer FIG. 2) provided in a line with the right end.

  The second recovery unit 22 includes a mixture of grains such as branch cropped grains and sawdust that have flowed down from the rear end of the grain sieve 34 without leaking from the grain sieve 34 of the rocking sorting mechanism 19, and the rocking sorting mechanism 19. A mixture such as a grain with shoots and sawdust leaking from the Strollac 32 is collected as the second item. A second screw 38 driven by the power from the engine 2 transmitted through the carp 20 or the like is disposed on the bottom of the second recovery unit 22 in the left-right direction. The 2nd screw 38 conveys the 2nd thing collect | recovered by the 2nd collection | recovery part 22 toward the 2nd reduction | restoration mechanism 39 (refer FIG. 2) provided in the right end.

  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 second reduction mechanism 39 includes a reprocessing unit (not shown) that performs a threshing process again on the second item conveyed by the second screw 38, and the second item after the threshing process by the reprocessing unit. It is transported and returned to the swing sorting mechanism 19 (see FIG. 2).

  The discharge port 23 is used for removing cereal cereals that do not leak from the receiving net 17 and flow down from the discharge port 18, and swarf sorted and conveyed to the rear of the oscillating and sorting mechanism 19 by a sieving sorting process or a wind sorting process. Release outside the machine.

  As shown in FIGS. 3 to 9, the handling cylinder 16 includes a frustoconical scoring portion 41 that forms a front end portion thereof, and a handling processing portion 42 that is connected to the rear end of the scrambling portion 41. Has been. On the outer peripheral surface of the scraping unit 41, the two chopped grains that have been fed and conveyed to the supply port 25 by the feeder 13 are scraped and conveyed toward the rear handling unit 42 as the handling cylinder 16 rotates. A spiral blade 43 is provided.

  The handling unit 42 includes a first plate 44 that is integrally provided at the front portion of the support shaft 15, a second plate 45 that is integrally provided at the front and rear intermediate portions of the support shaft 15, and a third plate that is integrally provided at the rear end portion of the support shaft 15. The plate 46 and six plates made of round pipe steel supported by the plates 44 to 46 in a front-to-back posture along the support shaft 15 so as to be arranged at a predetermined interval in the circumferential direction of the handle cylinder 16. A plurality of teeth 48 mounted on the body frame 47 and each handling frame 47 so as to protrude from the handling frame 47 toward the outside of the handling cylinder 16 so as to be arranged at predetermined intervals in the front-rear direction. , Etc.

  That is, a plurality of teeth 48 protruding outward are arranged in the handling cylinder 16 so as to be arranged at a predetermined interval in the circumferential direction and the front-rear 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, at the time of the rotation operation of the barrel 16, while the surrounding workpiece and the workpiece that has entered the internal space S are agitated, the barrel frame 47 and the teeth 48 are blown against those workpieces. Threshing is performed by squeezing or the like.

  Moreover, the internal space S of the handling processing unit 42 communicates with the handling chamber 14, so that even when a large amount of harvested cereal mash is supplied to the handling chamber 14 as a processed product, the internal space S of the handling processing unit 42. Can be effectively used as a processing space for threshing treatment. Thereby, the stay of the processed material in the processing space and the saturation of the processing space can be avoided. As a result, the processed material leaks from the concave 3 without sufficient threshing processing due to the stay of the processed material or the saturation of the processing space, or the load required for the threshing processing increases and the handling cylinder 16 is increased. It is possible to avoid inconveniences such as damage to the transmission system.

  When the handling cylinder 16 is rotated, not only the plurality of teeth 48 but also the six handling frames 47 forming the handling section 42 of the handling cylinder 16 serve as handling members that act on the workpiece. Since it functions, threshing performance and threshing efficiency can be improved.

  In addition, in the front and rear intermediate portions of the handling cylinder 16 in which a large amount of grain is made into a single grain by the threshing process on the front side of the handling cylinder 16 and leaks from the receiving net 17, the handling cylinder 16 is reduced. The second plate 45 that divides the inner space S forward and backward prevents the processed material in the inner space S of the handling cylinder 16 from flowing toward the lower side in the threshing process direction. , And threshing by hitting or punching the tooth-handling 48 with respect to the processed material, and leakage of the single grain from the receiving net 17 is promoted. As a result, the single-grained grains and unthreshed grains included in the processed material pass through the internal space S of the handling cylinder 16 and are formed at the lower end of the threshing processing direction along with the threshed grains. It is possible to prevent the occurrence of the third loss due to the discharge from 18.

  Further, when the handling cylinder 16 is rotated, outside air sucked from the supply port 25 along with the rotation of the spiral blade 43 together with the harvested cereal rice cake that is scraped and conveyed by the action of the scraping portion 41 is surrounded by the circumference of the handling cylinder 16. As a result, the fluid smoothly flows into the internal space S of the handling unit 42. Thereby, while being able to prevent outflow from the supply port 25, such as sawdust generated by the threshing process, to the feeder 13, it is possible to more quickly convey the processed material 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 is a cutting and conveying device equipped with the cutting mechanism 11, the auger 12, and the like. Since the supply port 25 communicates with a carry-out port (not shown) for carrying out the recovered cereals formed in the cutting and collecting unit 4, suction by rotation of the spiral blade 43 is performed when the handling cylinder 16 is rotated. As a result, dust such as sawdust generated in the cutting and collecting process in the cutting and collecting unit is also removed from the carry-out port of the cutting 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 accumulation and soaring of sawdust etc. in the harvesting and collecting part, the poor conveyance of the harvested cereals due to the deposition and the deterioration of the work environment and visibility due to the soaring, etc. Can be suppressed.

  Each of the plates 44 to 46 has a circular shape centered on the support shaft 15, and a handle cylinder frame 47 is bolted to the outer peripheral side of the plate 44 at an equal distance from the support shaft 15. That is, the six handling cylinder frames 47 are arranged on the outer peripheral side of each of the plates 44 to 46 at a predetermined interval in the circumferential direction so that the cylinder diameter of the handling cylinder 16 is increased. Thereby, the winding of the harvested cereal rice cake with respect to the handling cylinder 16 can be prevented.

  Each barrel frame 47 can be reoriented to a normal posture in which the front-rear direction coincides with the front-rear direction of the barrel 16 and an inverted posture in which the front-rear direction is opposite to the front-rear direction of the handle barrel 16, and Bolts are connected to the respective plates 44 to 46 so that the front and rear directions of the adjacent handling cylinder frames 47 are reversed.

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

  And each handling cylinder frame 47 is connected and supported by each plate 44-46 in the state which the front-back direction with an adjacent thing becomes reverse. As a result, while adopting the same configuration as the six handling cylinder frames 47, the handling teeth 48 provided in each of the handling cylinder frames 47 are arranged in the front-rear direction with the handling teeth 48 of the adjacent handling cylinder frames 47. It can be positioned in a state of being displaced by a half pitch. As a result, it is possible to reduce the striking interval of the tooth handling 48 against the workpiece without reducing the interval between the adjacent tooth handling teeth 48.

  That is, while reducing the cost by making each handling cylinder frame 47 the same configuration, the smaller the gap between adjacent handling teeth 48, the easier it is to invite the culm in the processed material to the handling teeth 48. It is possible to improve the threshing performance by effectively increasing the number of times the tooth handling 48 is struck against the processed object while effectively preventing the processed object from being clogged.

  In addition, since each handling cylinder frame 47 is equipped so that the orientation can be changed between the normal posture and the inverted posture, the wear of the tooth handling teeth 48 positioned on the upper side in the threshing processing direction, which is relatively easy to wear due to a large amount of processed material. If this becomes noticeable due to long-term use, the direction of each barrel frame 47 is changed so that a plurality of teeth 48 provided in each barrel frame 47 can be relatively easily worn away in the threshing process direction. It is possible to change the position at a stroke to the state in which the tooth-handling 48 on the side and the tooth-handling 48 on the lower side in the threshing process direction, which are hard to wear, are exchanged. Thereby, the tooth-handling 48 on the lower side in the threshing processing direction with less wear can be effectively used as the tooth-handling 48 on the upper side in the threshing processing direction with a large amount of processed matter.

  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 cylinder frame 47 are formed to have a smaller diameter than the mounting holes 47B located at the intermediate portion. ing.

  Of each tooth 48, a tooth 48A that is attached using a small-diameter attachment hole 47A is composed of a stepped round bar steel material having a small-diameter portion 48a that is inserted through the attachment hole 47A. A nut is detachably attached to the 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 barrel frame 47.

  The tooth 48B attached using the intermediate attachment hole 47B is made of a stepless round bar steel material, and the center thereof is located on a line passing through the center of the support shaft 15 and the center of the handling cylinder frame 47. As shown in FIG.

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

  Further, on the lower side of the threshing processing direction in which the amount of threshing cereals increases, as shown in FIG. 10, if the handling teeth 48 </ b> A located at the rear end portion of the handling cylinder 16 are thinned out, the handling cylinder rear end The interval of the tooth-handling 48 </ b> A at the portion is increased, and the retention of the threshing cereals caused by the catching on the tooth-handling 48 </ b> A at the rear end of the barrel can be effectively suppressed. As a result, it is possible to promote the release of the cerealed cereal from the discharge port 18.

  As shown in FIGS. 3 to 5, 11, and 12, the top plate 24 includes a curved portion 24 </ b> A that curves substantially along the rotation locus K of the tooth handling tip, and a semicircle located at both front and rear ends of the curved portion 24 </ b> A. A vertical wall portion 24B having a shape and straight side edge portions 24C positioned on the left and right of the curved portion 24A are integrally provided. The top plate 24 has a closed position that covers the upper side of the handling cylinder 16 from above with a plurality of hinges 24D provided on the left side edge 24C as a fulcrum, and an open position that opens the upper side of the handling cylinder 16 It is configured to be able to open and close and swing. The right side edge 24C is provided with a plurality of bolts 24E for fixing the top plate 24 in a closed state.

  The bending portion 24 </ b> A is formed to be curved so as to smoothly guide the processing object conveyed toward the upper portion of the handling cylinder 16 along with the rotation operation of the handling cylinder 16 toward the lower receiving net 17 by the inner surface thereof. Yes. On the inner surface of the curved portion 24 </ b> A, a plurality of dust feeding 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 accordance with the rotation operation of the handling cylinder 16 are It is fixedly detachably mounted in a state where it is lined up at a predetermined interval in the direction. Among the plurality of dust delivery valves 49, the foremost dust delivery 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 delivery valves 49B are left and right side edge portions. It is formed in an arc shape extending over 24C.

  In other words, by providing the top plate 24 with the bending portion 24A, the processed material scraped and conveyed to the upper portion of the handling chamber 14 by a plurality of teeth 48 and the like as the handling cylinder 16 rotates is transferred to the inner surface of the bending portion 24A. Or, along the dust feed valve 49, it can be smoothly guided toward the receiving net 17 on the lower side of the threshing processing direction. Further, each dust supply valve 49 is formed in a long arc shape extending over the left side edge 24C or the left and right side edges 24C, so that it is conveyed to the upper part of the handling chamber 14 as the handling cylinder 16 rotates. Thus, it is possible to effectively improve the guiding action of each dust delivery valve 49A with respect to the processed material. Thereby, while forming each tooth-handling 48 into the shape for exclusive use of the threshing which can perform the hit | damage and punching with respect to a processed material suitably instead of the shape provided with the conveyance effect | action with respect to a processed material, a processed material is made into the threshing process direction lower side. As a result, it is possible to improve the threshing performance and the conveyance performance for the processed material.

  The left and right side edge portions 24C are detachably bolted with steel plate seam members 50 bent so as to have a guide surface 50a that continuously connects the inner surface of the curved portion 24A and the inner surface of the receiving net 17. Yes. As described above, since the seam member 50 which is located at the joint between the receiving net 17 and the top plate 24 and makes contact with the processing object becomes detachable is detachable, the seam member 50 is in contact with the processing object. In the case of significant wear, the joint member 50 alone can be easily replaced. In other words, for example, when the seam member 50 is detachably welded to the top plate 24, the entire top plate 24 is replaced together with the worn seam member 50 without incurring the trouble and economical disadvantage. It is possible to appropriately treat the wear of the joint member 50.

  Incidentally, a small clearance is set between the tip of each tooth-handling 48 and the lower edge of each dust feed valve 49 in order to improve the guidance of the processed material by the dust feed valve 49. In addition, between the tip of each tooth-handling 48 and the inner surface of the receiving net 17, the tip of each tooth-handling 48 and each dust feed valve are used in order to promote the leakage of single grains from the receiving net 17. The clearance larger than the clearance set between 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 41 </ b> A are spirally welded to the outer peripheral surface of the scraping portion 41. Then, the corresponding spiral blades 43 are detachably bolted to the back surfaces of the respective support plates 41A in a state where the outer edge sides of the support blades 41A protrude outward from the outer edges of the corresponding support plates 41A. Yes.

  In other words, in this handling cylinder 16, with the rotation thereof, the harvested cereal meal fed and conveyed to the supply port 25 by the feeder 13 is squeezed and conveyed rearward, thereby making intense contact with the harvested grain meal. When the two spiral blades 43 that easily cause wear due to contact are detachably mounted on the scraping portion 41 of the handling cylinder 16, and each spiral blade 43 is significantly worn by long-term use. In this case, only the spiral blade 43 can be easily replaced. As a result, for example, as in the case where the spiral blade 43 is welded to the scraping portion 41 so as not to be detachable, the spiral portion 43 is replaced with the worn spiral blade 43 without incurring the trouble and economical disadvantage. It is possible to appropriately take measures against the wear of the blades 43.

  Each support plate 41 </ b> A is reinforced by a plurality of reinforcing ribs 41 </ b> B welded so as to extend over the front surface thereof and the outer peripheral surface of the scraping portion 41.

  As shown in FIGS. 3, 4, 6, 13, and 14, in the threshing device 5, between the front wall 26 and the receiving net 17, the cuttings that are supplied and conveyed to the supply port 25 by the feeder 13. A conveyance auxiliary guide 51 is provided for receiving the grain culm and assisting the scraped conveyance of the harvested cereal by the two spiral blades 43. The conveyance auxiliary guide 51 is configured by a pair of left and right guide members 51A and 51B that are bolt-coupled in a substantially U shape in a front view that covers the lower side of the scraping portion 41 from below. The left and right guide members 51 </ b> A and 51 </ b> B are stainless steel first plates that are 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-rear direction on the threshing device 5. The stainless steel 2nd plate 51b which forms the guide surface ranging from the front wall 26 of the threshing device 5 to the receiving net 17 is welded to 51a.

  That is, in this threshing device 5, by assisting the scooping and transporting of the harvested cereal meal by the two spiral blades 43, the conveyance assist guide that makes intense contact with the harvested grain meal and easily causes wear due to the contact. 51 is detachably equipped and can be divided into left and right guide members 51A located on the upper side in the rotational direction of the handling cylinder 16 and right guide members 51B located on the lower side in the rotational direction of the handling cylinder 16 Thus, when the entire conveyance auxiliary guide 51 is significantly worn due to long-term use, only the conveyance auxiliary guide 51 can be easily replaced. Further, when the left and right guide members 51A and 51B in the conveyance auxiliary guide 51 are significantly worn due to long-term use, only the guide members 51A and 51B that are markedly worn can be easily replaced. As a result, for example, when the conveyance auxiliary guide 51 is welded to the receiving net 17 or the left and right support frames 52 in a non-detachable manner, the receiving net 17 or the left and right support frames 52 are replaced with the conveyance auxiliary guide 51, or As in the case where the conveyance auxiliary guide 51 is configured so as not to be divided, even if either the left or right side of the conveyance auxiliary guide 51 is significantly worn, there is a trouble and economical disadvantage that the entire conveyance auxiliary guide 51 is replaced. It is possible to appropriately take measures against wear of the conveyance auxiliary guide 51 without inviting.

  Moreover, since the conveyance auxiliary guide 51 is made of stainless steel that is resistant to corrosion and has high strength, the frequency of replacement due to wear can be reduced.

  As shown in FIGS. 3, 5, 6, and 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. Yes. Each receiving net member 53 is provided with a base frame 53A that is framed in a rectangular shape. In the frame of the base frame 53 </ b> A, a plurality of vertical bars 53 </ b> B made of strip-shaped steel plates are arranged in the front-rear direction in a state of being spaced apart in the circumferential direction of the handling cylinder 16. In addition, a plurality of first horizontal bars 53 </ b> C made of a strip-shaped steel plate curved in an arc shape are aligned and arranged in the left-right direction with a predetermined interval in the front-rear direction as the support shaft direction of the handling cylinder 16. Further, a plurality of second horizontal bars 53D made of a piano wire curved in an arc shape are aligned and arranged in the left-right direction with a predetermined interval in the front-rear direction between adjacent first horizontal bars 53C. . Each mesh is formed so that the mesh formed in the frame of the base frame 53A has a horizontally long rectangular shape in which the length in the direction along the circumferential direction of the handling cylinder 16 is longer than the length in the direction along the front-rear direction. The arrangement intervals 53B to 53D are set.

  That is, at the time of the threshing process in which the handling cylinder 16 is rotationally driven, it is considered that the single grains obtained by the threshing process on the harvested cereals flow in the rotation direction as the handling cylinder 16 rotates. Then, the receiving net 17 is configured so that the mesh has a horizontally long rectangular shape that is long in the rotation direction of the handling cylinder 16. Thereby, compared with the case where the receiving net 17 is configured to have a vertically long rectangular shape that is long in the threshing processing direction (front-rear direction) of the handling cylinder 16, single grains and the like are received by the receiving net 17. It becomes easy to leak from the front side. As a result, it is possible to effectively suppress the occurrence of defracted grains resulting from the suppression of leakage of single grains from the front side of the receiving net 17. Moreover, the productivity and assembly | attachment property of the receiving net | network 17 can be improved by forming each receiving net | network member 53 in the same shape.

  As shown in FIGS. 3 and 16, the rough sorting chaff sheave 31 is composed of a single sorting plate 54 that is bolted to the sheave case 29 in an upwardly inclined posture that is located on the lower side in the sorting direction. Has been.

  A plurality of leakage holes 54A formed in a rectangular shape in plan view are provided between the front-side leakage holes 54A on the front side of the sorting plate 54 (a region of about １ ／ of the front side with respect to the entire sorting plate 54). Are arranged in a staggered pattern in which the rear-row leakage holes 54A are located. On the rear side of the sorting plate 54 (about 2/3 of the rear side of the whole sorting plate 54), there are a plurality of leakage holes 54B and 54C formed in a rectangular shape in plan view having sorting pieces 54a and 54b. The rear row leakage holes 54B and 54C are arranged in a staggered manner between the front row leakage holes 54B and 54C.

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

  That is, since the chaff sheave 31 for rough sorting is configured by a single sorting plate 54, for example, the chaff sheave 31 is configured by arranging a large number of chaff flips made of strip steel plates so as to be spaced apart in the front-rear direction. Compared with the case where it does, the simplification of a structure and the reduction of cost can be aimed at.

  And the front part of the chaff sheave 31 is formed by forming the leakage hole 54A not provided with the sorting pieces 54a and 54b on the front part side of the chaff sheave 31 to which the processed product with a high content of single grains is supplied. The number of single grains that leak from the side to the lower grain pan 33 and the grain sieve 34 increases. As a result, it is possible to increase the recovery rate of the single grain in the first recovery unit 21 located below the Glen pan 33 and the Glen sheave 34.

  In addition, since the leakage holes 54B and 54C provided with the sorting pieces 54a and 54b are formed in a staggered manner in the front and rear and right and left sides on the rear side of the chaff sheave 31, the screened material on the chaff sheave 31 is not separated in the sieve sorting process. It will be evenly distributed in the left-right direction. Thereby, the leak from each leak hole 54B, 54C of a single grain can be promoted.

  Further, since the chaff sheave 31 is installed in a rearwardly inclined posture, the chaff sheave 31 moves the sorting processing product on the upper side in the sorting processing direction in the sieve sorting process as compared with the case where the chaff sheave 31 is installed in the horizontal posture. The force to push out increases. Therefore, during the sieve sorting process, the conveyance of the sorting process product to the lower side of the sorting direction is suppressed, and the vertical movement of the sorting process product becomes intense, and the specific gravity difference sorting of the sorting process product becomes more effective. Therefore, the third loss in which the leakage of grains with large specific gravity from the respective leakage holes 54B and 54C is promoted and the single-grained grains are discharged from the outlet 23 to the outside of the machine. Generation can be effectively suppressed, and as a result, the grain recovery efficiency can be improved.

  In addition, 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. Leakage of grains and the like can be promoted. As a result, it is possible to avoid a reduction in sorting efficiency due to the accumulation of sorting processed products at the left and right ends of the chaff sheave 31.

  Incidentally, the ratio of the leakage holes 54A that are not provided with the sorting pieces 54a and 54b formed in the chaff sheave 31 and the leakage holes 54B and 54C that are provided with the sorting pieces 54a and 54b depends on the types of grains to be selected. Various changes can be made accordingly.

  In addition, a plurality of leakage holes 54C formed in a rectangular shape in plan view so as to have a short rectangular sorting piece 54b on the front side of the sorting plate 54 are arranged between the front row leakage holes 54C in the rear row. You may make it form in a zigzag form where the leakage hole 54C is located.

  As shown in FIG. 3, of the selected air from the tang 20, the selected air that passes through the upper air passage R <b> 1 passes through the air passage R <b> 4 formed in the sheave case 29 toward the second plate 45 of the handling cylinder 16. Are set to flow. Thereby, the processed material in which the flow to the lower side in the threshing processing direction is prevented by the second plate 45 can be conveyed by wind toward the periphery of the handling cylinder 16. As a result, it is possible to avoid the possibility that the processed material is accumulated immediately before the second plate 45 and hinders the threshing process.

  As shown in FIGS. 3 and 6, the handle 16 has a tooth 48 </ b> A located at the rear end thereof positioned behind the rear end of the receiving net 17 so as to face the discharge port 18. That is, since the receiving net 17 does not exist at the rear end of the handling cylinder 16, a relatively large space is formed around it. As a result, even if the shed cereals are entangled with the tooth handling 48A at the rear end of the barrel, the shed cereals come out of the tip of the tooth handling 48A due to the centrifugal force accompanying the rotation of the barrel 16. . As a result, it is possible to effectively suppress the retention of the threshing cereals caused by the hooking of the tooth handling 48 </ b> A at the rear end of the handling cylinder 16, and to promote the release of the threshing cereals from the discharge port 18. it can.

    [Another embodiment]

[1] As the handling cylinder 16, the handling processing section 42 is provided on the outer periphery of the trunk section so as to be connected to the cylindrically formed barrel section and the two spiral blades 43 provided in the scraping section 41. It may be configured in the form of a drum by a single screw and a large number of teeth that are detachably mounted at a predetermined interval in a state protruding outward from the outer periphery of each screw. .

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

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

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

[5] The conveyance auxiliary guide 51 may be configured so as not to be divided into left and right, or may be configured so as to be divided into three or more divisions.

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

[7] As a material of the conveyance auxiliary guide 51, a steel material such as carbon steel other than stainless steel may be adopted.

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

16 Handle cylinder 17 Receiving net 24 Top plate 41 Front end (handle cylinder)
43 Spiral blade 50 Seam member 50a Guide surface 51 Conveyance auxiliary guide 51B Lower side portion of conveyance auxiliary guide in the barrel rotation direction

Claims (1)

  A full-pile-type combine combiner equipped with a spiral blade that feeds and conveys the harvested cereal meal fed toward the front end of the handling cylinder toward the rear as the handling cylinder rotates. Threshing structure.

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