JP2012060970A - Transmission structure of combine harvester - Google Patents

Abstract

PROBLEM TO BE SOLVED: To make simple improvements to a transmission structure of a combine harvester, thereby easily switching the rotation speed of a threshing cylinder between high speed for rice and wheat and low speed for soybeans without deteriorating the reaping performance and the conveying speed of a reaping and conveying device.SOLUTION: In this transmission structure of a combine harvester having a transmission means B configured to transmit power from an engine 72 to a horizontal winnower shaft 51 and from the winnower shaft 51 to the reaping and conveying device 2 and the threshing cylinder 19, the transmission means B has in parallel a reaping and conveying transmission system L2 for transmitting the power from the winnower shaft 51 to the reaping and conveying device 2 and a threshing cylinder transmission system L1 for transmitting the power to the threshing cylinder 19.

Description

  The present invention relates to a power transmission structure for a combine that includes power transmission means for transmitting power from an engine to a right-and-left tang shaft and transmitting the power from the tang shaft to a cutting and conveying device and a handling cylinder.

  The power transmission structure of the combine as described above is to transmit the power from the engine transmitted to the Karatsu drive shaft (Koratsu shaft) to the case input shaft through the belt transmission mechanism, and from the case input shaft to the bevel gear mechanism and the threshing output shaft. There are some which are configured to transmit to a handling cylinder through a case, and transmit from a case input shaft to a cutting unit (cutting conveyance device) via a forward rotation clutch (see, for example, Patent Document 1).

Japanese Patent Laying-Open No. 2008-263865 (paragraph number 0029, FIG. 3)

  Grains harvested by combine include not only relatively hard and difficult to damage such as rice and wheat, but also relatively soft and easily damaged such as soybean. When harvesting rice or wheat using a combine, it is common to rotate the barrel at a relatively high speed in order to improve the processing capacity. When harvesting soybeans, etc. In general, in order to prevent deterioration in quality due to damage during handling, the handling cylinder is generally rotated at a relatively low speed.

  Therefore, in the combine adopting the transmission structure described in Patent Document 1, the belt transmission mechanism is exchanged by exchanging the transmission pulley of the belt transmission mechanism, for example, when harvesting rice or wheat or when harvesting soybeans. It is considered that the rotation speed of the barrel is switched between a high speed for rice and a low speed for soybeans by changing the gear ratio in the above. However, in the transmission structure described in Patent Document 1, when the speed ratio of the belt transmission mechanism is increased in order to reduce the rotation speed of the handling cylinder for soybeans, the driving speed of the cutting and conveying device is also reduced accordingly. As a result, there arises a disadvantage that the cutting performance and the conveying speed in the cutting and conveying apparatus are lowered. In order to avoid such an inconvenience, when the rotation speed of the handling cylinder is set to be low for soybeans, not only the transmission pulley of the belt transmission mechanism is replaced but the speed ratio of the belt transmission mechanism is increased. In order to compensate for the decrease in the driving speed of the cutting and conveying device due to the increase in the transmission ratio of the belt transmission mechanism, it is necessary to replace the transmission pulley of the forward rotation clutch to reduce the transmission ratio of the forward rotation clutch. .

  That is, in the combine adopting the transmission structure described in Patent Document 1, the rotation speed of the handling cylinder is reduced between the high speed for rice and the low speed for soybean without causing a decrease in the cutting performance and the conveyance speed in the harvesting and conveying device. In order to switch to, it is necessary to change the gear ratio of the forward transmission clutch as well as the gear ratio of the belt transmission mechanism, so there is room for improvement in facilitating the work required to switch the rotation speed of the barrel. is there.

  The object of the present invention is to provide a simple improvement to the combine transmission structure, so that the rotation speed of the handling cylinder can be increased without increasing the harvesting performance and the conveying speed in the harvesting and conveying apparatus and the soybean speed. It is to be able to easily switch to a low speed for use.

In the first problem solving means of the present invention,
In the transmission structure of the combine equipped with transmission means configured to transmit the power from the engine to the right and left tang shafts and transmit from the tang shaft to the cutting and conveying device and the handling cylinder,
The transmission means is provided in parallel with a cutting and conveying transmission system for transmitting power from the rod shaft to the cutting and conveying apparatus and a handling cylinder transmission system for transmitting to the treating cylinder.

  According to this problem solving means, even if the gear ratio in the handling cylinder transmission system is changed and the rotation speed of the handling cylinder is switched between the high speed for rice and the low speed for soybeans, the handling cylinder transmission system is sent to the cutting and conveying device. Therefore, the driving speed of the cutting and conveying apparatus can be kept constant.

  In other words, by simply changing the gear ratio in the barrel transmission system by simply modifying the transmission means in parallel with the harvesting conveyance transmission system and the handling cylinder transmission system, the cutting performance in the harvesting conveyance device Can be easily switched between a high speed for rice and a low speed for soybean without causing a decrease in the conveyance speed and processing speed when harvesting rice or wheat. In the case of harvesting soybeans and the like, it is possible to prevent deterioration in quality due to damage during handling.

In the second problem solving means of the present invention, in the first problem solving means,
The transmission means transmits power from the engine to one end portion of the rod shaft, transmits from one end portion of the rod shaft to one end portion of a left-right idler shaft, and from the idler shaft to the cutting conveyance transmission system It is configured to transmit in parallel with the barrel transmission system,
Equipped with a transmission mechanism comprising a pair of transmission rotors in the barrel transmission system, the other end of the idler shaft extends laterally outward so as to be positioned at the lateral side end of the vehicle body, and the idler shaft The transmission mechanism is linked to the other end.

  According to this problem solving means, when the power from the engine is transferred from the Karatsu shaft to the transmission mechanism for cutting and conveying without passing through the idler shaft, or from the other end of the Karatsu shaft to the idler shaft. Compared with the case of transmission, the load on the Karatsu shaft can be reduced.

  Further, since the transmission mechanism is located at the lateral end of the vehicle body, it becomes easy to change the transmission gear ratio in the handling cylinder transmission system by replacing the transmission rotating body provided in the transmission mechanism from the lateral outside of the vehicle body.

  Therefore, it is possible to improve the durability of the tang shaft while it is configured to transmit the power from the engine via the tang shaft to the cutting and conveying device and the handling drum with a large load. It is easier to switch between high speed for rice and low speed for soybean.

In the third problem solving means of the present invention, in the second problem solving means,
The transmission mechanism is configured to switch the transmission to the handling cylinder in two steps by changing the pair of transmission rotating bodies with respect to the idler shaft that is linked and linked via the transmission mechanism and the transmission shaft on the lower side in the transmission direction. It is.

  According to this problem solving means, the transmission gear ratio in the barrel transmission system is reduced by changing the pair of transmission rotors to the idler shaft and the transmission shaft on the lower side in the transmission direction to reduce the transmission gear ratio in the transmission mechanism. It can be changed to a small transmission ratio. Conversely, by increasing the transmission ratio in the transmission mechanism, the transmission ratio in the barrel transmission system can be changed to a large transmission ratio for soybeans.

  In other words, it is not necessary to provide a speed change case for the handling cylinder in order to change the speed change ratio in the handling cylinder transmission system to that for rice and soybeans, and the gear ratio for rice wheat is obtained. Since it is not necessary to provide a pair of dedicated transmission rotors for the purpose and a dedicated pair of transmission rotors for obtaining the transmission ratio for soybeans, it is advantageous in terms of cost, transmission rotor management, etc. Can do.

In the fourth problem solving means of the present invention, in the second problem solving means,
A boss part externally fitted to either the idler shaft that interlocks and couples the pair of transmission rotating bodies via the transmission mechanism and a transmission shaft on the lower side in the transmission direction, and a laterally outer side to the boss part And an outer peripheral portion that is bolt-coupled so as to be integrally rotatable, and the transmission to the handling cylinder is switched between two steps of high and low by changing the outer peripheral portion with respect to the boss portion.

  According to this problem solving means, there is no need to provide a transmission case for the handling cylinder, and the entire structure of the transmission rotating body including the boss portion closely fitted to the idler shaft or the transmission shaft on the lower side in the transmission direction is replaced. In comparison, it is possible to easily change the gear ratio in the transmission mechanism.

In the fifth problem solving means of the present invention, in the fourth problem solving means,
The transmission rotating body provided on the uppermost side in the transmission direction of the cutting and conveying transmission system is connected to the other end portion of the idler shaft so as to be integrally rotatable, and the other end portion of the transmission rotating body is externally fitted to the idler shaft. The boss part is integrally formed.

  According to this problem solving means, the configuration can be simplified and the cost can be reduced by reducing the number of parts.

In a sixth problem solving means of the present invention, in any one of the above second to fifth problem solving means,
A cover that covers the transmission mechanism from the lateral outer side of the vehicle body is detachably mounted.

  According to this problem solving means, the transmission mechanism which is normally located at the lateral end of the vehicle body can be covered with a cover, and the cover transmission system can be obtained by replacing the transmission rotating body provided in the transmission mechanism by removing the cover. The gear ratio can be changed at.

In a seventh problem solving means of the present invention, in any one of the first to sixth problem solving means,
The handling cylinder transmission system is configured to be transmitted to the handling cylinder via a bevel gear type transmission mechanism, the bevel gear type transmission mechanism is provided with a bevel gear for taking out reverse rotation power, and the transmission means is connected to the reverse It is configured to transmit from the bevel gear for taking out the rotational power to the cutting and conveying device through the transmission mechanism for reverse rotation, and the cutting and conveying transmission system and the reverse rotation transmission mechanism are switched between the transmission state and the cutoff state. It is configured to be possible.

  According to this problem solving means, during the harvesting operation, the cutting and conveying transmission system is set in the transmission state, and the reverse rotation transmission mechanism is set in the disconnected state, so that the cutting and conveying device can be driven in the forward direction and the cereal is harvested. Can be transported. In addition, when clogging occurs in the cutting and conveying device, the cutting and conveying device can be driven in reverse rotation by switching the cutting and conveying transmission system to the shut-off state and switching the reverse rotation transmission mechanism to the transmitting state. The cereal straw packed in the harvesting and conveying device can be easily removed.

  That is, it is possible to improve the maintainability when cereal clogging occurs in the cutting and conveying apparatus.

It is the whole left side view of a normal type combine. It is a whole top view of a normal combine. It is a vertical left side view of a threshing apparatus. It is a left view of the threshing apparatus which removed each cover. It is a front view of the threshing apparatus which shows a transmission structure. It is an upper side rear view of a threshing apparatus. It is the schematic which shows the transmission structure of a normal type combine. It is a vertical front view of the principal part which shows the structure of the transmission mechanism for handling cylinders. It is a longitudinal side view of the principal part which shows the support structure of the input shaft for handling cylinders, the input shaft for cutting and conveying, and the idler shaft.

  Hereinafter, an embodiment in which the present invention is applied to a normal type (whole type) combine will be described with reference to the drawings.

  As shown in FIGS. 1 and 2, the ordinary combine harvester can swing the chopping and conveying device 2 that harvests and conveys the harvested culm as the traveling vehicle body 1 travels upward and downward from the traveling vehicle body 1. The threshing device 3 is mounted on the left half of the traveling vehicle body 1 so as to extend in the state where the chopping cereal from the chopping and conveying device 2 is handled and the processed material obtained by the handling processing is selected. The bagging device 4 that stores the single grains obtained by the handling process and the sorting process in the threshing device 3 and enables the bagging into the bag is mounted on the right half of the traveling vehicle body 1 and configured. It is.

  The traveling vehicle body 1 is provided with a pair of left and right crawler traveling devices 6 at the lower part of a vehicle body frame 5, and a boarding operation unit 7 is formed in the front right side region of the vehicle body frame 5.

  As the traveling vehicle body 1 travels, the harvesting and conveying device 2 separates the unharvested cereals into the harvested cereals and the unharvested cereals by the dividers 8 provided at the left and right ends of the front part thereof. The tip of the harvested culm is scraped backward by a rotating reel 9 arranged at the upper front of the transport device 2, and the stock of the harvested culm is harvested by the clipper-type cutting mechanism 10 provided at the bottom of the harvesting and transport device 2. Cut the sides and capture the harvested cereal. Then, the harvested grain culm, which is the harvest target grain culm, is gathered to a predetermined place in the left and right direction by the screw transport type auger 11 provided behind the cutting mechanism 10 and sent out backward, and the threshing device 3 is sent from the predetermined position. The threshing apparatus 3 is fed and conveyed by a scraping and conveying feeder 12 installed over the threshing apparatus 3.

  The lifting and swinging of the cutting and conveying device 2 is performed after the feeder 12 serving as a connection end portion with the threshing device 3 in the cutting and conveying device 2 by an expansion and contraction operation of a hydraulic lifting cylinder 13 installed over the body frame 5 and the feeder 12. The operation is performed using the feeder drive shaft 14 provided at the end as a fulcrum.

  As shown in FIGS. 3-6, the threshing apparatus 3 is comprised so that the threshing frame 15 connected with the vehicle body frame 5 can be divided into 2 parts up and down. The upper frame portion 15A of the threshing frame 15 is provided with a threshing portion 3A that performs a handling process on the harvested cereal straw supplied by the feeder 12. The lower frame portion 15B of the threshing frame 15 includes a sorting unit 3B that performs a sorting process on a sorting target process obtained by the handling process in the threshing unit 3A, and a recovery target process obtained by the sorting process. A recovery unit 3C for recovery is provided.

  The threshing portion 3A rotates clockwise around the front and rear handling cylinder shaft 18 in the handling chamber 17 formed by mounting the upper frame portion 15A with the U-shaped receiving net 16 in the front-rear direction. The bar-type handling cylinder 19 for handling the harvested cereal meal from the harvesting and conveying device 2 is provided.

  The sorting unit 3B is a swing sorting means 20 that swings and sorts the processing material leaked from the receiving net 16 while moving it backward, a rock 21 that supplies a sorting wind for fine sorting to the swing sorting means 20, A secondary tang 22 for supplying the sorting air for the rough sorting to the sorting means 20 and a second tang 23 for supplying the sorting air for the second sorting to the swinging sorting means 20 are arranged below the threshing section 3A. Configured.

  The collection unit 3C collects the single-grained grains that have been leaked from the front side of the rocking sorting means 20 and flowed down while receiving the sorting wind from the Kara 21 below the rocking sorting means 20 as the first thing. The second harvesting part 24 and the branching grain or bifurcated grain that leaks from the rear side of the swing sorting means 20 and flows down while receiving the sorting wind from the second Kara 23 are collected as the second thing. The second collection unit 25 is arranged so as to be lined up and down in that order.

  In the threshing part 3A, the handling chamber 17 supports the receiving net 16 that covers the handling cylinder 19 from below, the upper cover 26 that covers the upper part of the handling cylinder 19 from above so that it can be opened and closed, and the front end portion of the handling cylinder 18 that can rotate. The front vertical plate member 27, the rear vertical plate member 28 that rotatably supports the rear end portion of the handling cylinder shaft 18, and a guide surface 29 </ b> A that guides the harvested cereal from the feeder 12 to the receiving net 16 are provided on the feeder 12. A partition is formed by a grain culm guide plate 29 provided in a rearwardly inclined posture extending from the rear end to the front end of the receiving net 16. A supply port 30 is formed between the front vertical plate member 27 and the cereal guide plate 29 to enable the supply of the harvested cereal that has been picked up and conveyed by the feeder 12 to the handling chamber 17. Further, between the plate-like rear support member 31 that supports the rear end of the receiving net 16 and the rear vertical plate member 28, a handling chamber for discharged matter such as shed cereal culm that is a harvested culm after processing. A discharge port 32 is formed to enable discharge from 17.

  As shown in FIG. 3, the handling cylinder 19 handles a scraping portion 33 that forms the front end of the handling cylinder 19 and a handling processing portion 34 that forms the rear side of the handling cylinder 19 in a state where they are connected in the front-rear direction. It is configured to be connected to the handling cylinder shaft 18 so as to rotate integrally around the trunk shaft 18 clockwise as viewed from the front.

  The scraping portion 33 is equipped with two spiral blades 36 for scraping and transporting on the outer peripheral surface of the barrel portion 35 formed in the shape of a truncated cone, and rotates clockwise around the barrel shaft 18. By rotating, the entire harvested cereal from the feeder 12 guided by the culm guide plate 29 is handled between the rear receiving net 16 and the upper cover 26 and the handling processing unit 34 by two spiral blades 36. It is configured as a screw conveyance type that is scraped into the processing space S1. In addition, as the scraping part 33, it replaces with the spiral blade | wing 36 in the trunk | drum 35, and may be equipped with different scraping members, such as a clinching tooth and a tooth-handling.

  The handling processing unit 34 includes disk-shaped support plates 37 and 38 that form the front end or the rear end thereof, the front end support plate 37 is connected to the rear end of the scoring portion 33, and the rear end support plate 38 is The barrel 18 is equipped so as to be positioned immediately before the rear vertical plate member 28. In addition, a disc-shaped partition plate 39 is mounted on the handling cylinder shaft 18 so as to be located in the middle or substantially in the middle of the front and rear support plates 37 and 38 which are the front and rear intermediate portions of the handling processing unit 34. Then, a plurality of (for example, six) rod-like members 40 having a length over the front and rear support plates 37 and 38 are provided on the outer peripheral portions of the support plates 37 and 38 and the partition plate 39 in the front and rear directions along the barrel 18. In the orientation posture, they are connected at equal distances from the barrel 18 so as to be arranged at equal intervals in the circumferential direction of the barrel 19, and a plurality of teeth 41 are connected to each rod-shaped member 40 from the rod-shaped member 40 to the barrel 19. Are arranged so as to be lined up at a set interval in the front-rear direction with a posture protruding outward. As a result, a bar type processing cylinder is formed in which an internal space S <b> 2 communicating with the chamber 17 is formed inside the chamber 17.

  As a result, the handling unit 34 rotates clockwise about the handling cylinder shaft 18 in the front view so that a tooth handling is applied to the harvested cereal culm located in the handling processing space S1 between the receiving net 16 and the upper cover 26. 41, a handling process such as hammering of the teeth 41 and the handling of the tooth handling 41 is performed, and the processed material obtained by this handling process is allowed to enter the internal space S2, and the processed material in the processing space S1 and the processed material in the internal space S2 These processing products are configured to be subjected to a handling process such as striking the bar-shaped member 40 and the tooth handling 41 or scooping the tooth handling 41.

  Then, by using the internal space S2 of the handling processing unit 34 as a processing space for handling processing, even when a large amount of harvested cereal meal is supplied to the handling chamber 17, the retention of the processed material in the processing space or Saturation of the processing space can be avoided, so that the processing material leaks from the receiving network 16 without sufficient handling processing due to stagnation of the processing material and saturation of the processing space, or It is possible to prevent the occurrence of inconvenience such as an increase in the load required for processing and damage to the transmission system for the handling cylinder 19.

  The partition plate 39 is composed of a disc disposed around the handling cylinder shaft 18 so as to close the upper side portion of the internal space S2 formed in the handling processing unit 34 from the rear side. In the intermediate part before and after the handling processing unit 34 where the handling processing unit 34 decreases, the partition plate 39 prevents the threshing processed product from flowing downward in the threshing processing direction in the internal space S2 of the handling processing unit 34. The threshing processed product is guided to the periphery of the processing unit 34 along with the rotation so as to promote threshing by hitting or punching the tooth handling 41 or the like with respect to the threshing processed product, or leakage of the single grain from the receiving net 16. Therefore, single grains and unthreshed grains included in the threshing processed material pass through the internal space S2 of the processing section 34, and the threshing cereal and the lower end portion in the threshing processing direction are removed. No. 3 loss due to being discharged from the mouth 32 It is possible to prevent the occurrence.

  In addition, since not only the plurality of teeth 41 but also the plurality of rod-shaped members 40 function as a handling member that acts on the processed material in the handling chamber, threshing performance and threshing efficiency can be improved.

  The rod-shaped member 40 may be a round pipe steel material, a square pipe steel material, a round bar steel material, a square bar steel material, an angle material, a channel material, or the like. For each tooth 41, a round bar steel, a square bar steel, a round pipe steel, a square pipe steel, or the like can be used.

  Inside the upper cover 26, the harvested cereal meal and processed material that have moved to the upper part of the handling chamber 17 as the handling cylinder 19 rotates clockwise around the handling shaft 18 are guided to the rear of the vehicle body. A plurality of dust feeding valves 42 are arranged so as to be arranged at a set interval in the front-rear direction.

  As shown in FIG. 3, the swing sorting means 20 includes a sheave case 44 that swings back and forth by the operation of an eccentric cam type swing drive mechanism 43 provided at the lower portion thereof. The sorting grain pan 45, the coarse sorting body 46, and the Strollac 47 are arranged in that order from the front end of the sheave case 44 to the rear, and the fine sorting grain pan 48 and A second sieve 50 for sorting second articles is arranged in such a manner that the grain sieve 49 is connected to the front and rear in that order, and the grain sieve 49 is connected to the rear of the grain sieve 49.

  The rough sorting grain pan 45 is made of a sheet metal material that is bent so that the longitudinal side shape is a saw blade, and the upper surface thereof is located at a position lower than the auxiliary tang shaft 53 of the auxiliary tang 22. It has been deployed. Then, by swinging back and forth together with the sheave case 44, the processed material having a high grain content that leaks from the front end of the receiving net 16 and accumulates on the grain pan 45 is subjected to a specific gravity difference sorting, and so on. It is transferred to the rear coarse sorting body 46 while being divided into dust and grains having a large specific gravity. Thereby, the leakage of the grain in the coarse sorter 46 can be promoted.

  The rough sorter 46 employs a chaff sheave 46 configured by arranging and arranging a plurality of cha-flip plates 46A in a left-right orientation with a set interval in the front-rear direction. The chaff sheave 46 swings back and forth together with the sheave case 44 so that the processed material from the front side of the receiving net 16 and the grain pan 45 is subjected to a sieving selection process, and grains and the like are leaked from between the chaff flip plates 46A. Then, the processed material which has not leaked from between the char flip plates 46A is transferred to the rear stroller 47.

  The chaff sheave 46 may be a movable type in which a plurality of cha-flip plates 46A are connected so as to be swingable in the front-rear direction so that the opening degree can be adjusted. May be a fixed type that is configured to be fixed in a predetermined post-tilt posture so that the opening degree cannot be adjusted. Further, as the rough sorter 46, instead of the chaff sheave 46, a sort plate formed by arranging a plurality of leakage holes and sort pieces at a set interval on a single flat plate may be adopted, You may employ | adopt the strola rack comprised by arranging and arranging the several rack board formed in the shape of a saw blade in the front-back direction attitude | position with the set space | interval in the left-right direction.

  The Strollac 47 is configured by arranging a plurality of rack plates 47A formed in a saw blade shape in a cantilever state extending rearward in a rearwardly inclined posture with a set interval in the left-right direction. Then, by swinging back and forth together with the sheave case 44, the processed product from the rear side of the receiving net 16 and the coarse sorting body 46 is subjected to a loosening action by the left and right swing of each rack plate 47A, and grains and the like are removed from the rack plate. The processed material that has not leaked from between the rack plates 47 </ b> A is allowed to flow from the rear end of the stroller 47 while leaking from between 47 </ b> A.

  The fine pan 48 for fine sorting is flat without unevenness over the entire length of the coarsely-sorted body 46 arranged in a downwardly inclined manner so as not to obstruct wind transportation by the sorting wind from the sub-tang 22. It is made of a flat sheet metal material. Then, by swinging back and forth together with the sheave case 44, a processed product having a high grain content that leaks from the front side of the coarse sorting body 46 is guided to the grain sheave 49.

  Glen sieve 49 is formed of a crimp net or a resin net arranged in a rearwardly inclined posture below the rear side of coarse sorting body 46. Then, by swinging back and forth together with the sheave case 44, the processed product having a high grain content from the coarsely-sorted body 46 and the grain pan 48 for fine sorting is subjected to a sieving and sorting process. While letting it leak as a thing, the grain or bifurcated grain, etc. that does not leak is transferred to the rear second sorting body 50 together with sawdust and the like as the second thing.

  The second sorting body 50 employs a second chaff sheave 50 configured by arranging and arranging a plurality of cha-flip plates 50A in a left-right orientation with a set interval in the front-rear direction. The second chaff sheave 50 is arranged at the rear of the sheave case 44 in a tilted posture so that its rear end is close to the rear vertical wall 44A of the sheave case 44, and swings back and forth with the sheave case 44. The processed material from the rear end portion of the receiving net 16, the Strollac 47 and the Glen sieve 49 is subjected to a sieving selection process, so that the grain with a branch branch or a bifurcated grain is secondly leaked from between the cha-flip plates 50A. Then, a processed object such as long sawdust that does not leak from between the char flip plates 50A is transferred to the rear of the sheave case 44.

  Glen sheave 49 and No. 2 chaff sheave 50 are arranged so as to be aligned in front and back in a side view, and chaff sheave 46 and No. 2 chaff sheave 50 are lower in the front end portion of No. 2 chaff sheave 50 than the rear end portion of chaff sheave 46. It is deployed in the front and back with a stepped so as to be the arrangement height.

  The second chaff sheave 50 may be a movable type in which a plurality of char flip plates 50A are connected to be able to swing together in the front-rear direction so that the opening degree can be adjusted. It may be a fixed type in which the plate 50A is fixed in a predetermined post-inclined posture so that the opening degree cannot be adjusted.

  The red pepper 21 is arranged in front of and below the swinging sorting means 20 and generates a sorting wind by rotating counterclockwise in the left side view about the left-right facing shaft 51, and this sorting wind is Fine sorting through the blowout opening 52A formed in the lower rear part of the case 52, blows through the rear and upper Glen sheave 49 and No. 1 recovery part 24, the entire area of the Glen sheave 49, and between the Glen sheave 49 and No. 2 chaff sheave 50. It is configured to be supplied for use.

  At the air outlet 52A of the carp 21, a wind direction plate 52B that divides the sorting air from the carp 21 into an upper wind that blows near the bottom surface of the grain sieve 49 and the grain sheave 49 and a lower wind that blows near the upper part of the first recovery unit 24. It has been deployed. The wind direction plate 52B is provided with a throttle surface 52Ba for increasing the flow velocity of the upper wind at the upper part, and a wind direction part 52Bb for correcting the blowing direction of the lower wind to be horizontal or nearly horizontal is extended from the rear end part to the rear lower direction. is there.

  As a result, the sorting air from the tang rice cake 21 leaks from the grain sieve 49 and flows down to the first collecting unit 24, and the treated substance being screened by the grain sieve 49 from the front and lower side, It is possible to perform wind sorting that blows dust such as soot dust with a small specific gravity from the processed material and then winds it upward, and this wind sorting prevents dust such as soot from entering the No. 1 recovery unit 24. However, the 1st recovery process which collects the single grain which leaks from the Glen sieve 49 to the 1st recovery part 24 can be performed with sufficient accuracy.

  In particular, the upper layer wind with an increased flow velocity acts on the processed material immediately after leaking from the grain sieve 49, so that relatively large soot can be efficiently sorted by wind power, and relatively large soot is generated. The processed material that has been removed and has flowed down to the vicinity of the first recovery unit 24 is affected by the lower wind that blows horizontally or substantially horizontally above the first recovery unit 24, so that it remains relatively small in the processed product. Wind power can be accurately sorted for sawdust.

  The auxiliary tang 22 is provided in a space in front of the swaying selection means 20 between the cereal guide plate 29 provided so as to cover the scratching portion 33 of the handling cylinder 19 from below and the left and right sides. A selection wind is generated by rotating counterclockwise in the left side view about the auxiliary sub-shaft shaft 53 in the direction, and this sort air is supplied from the outlet 54A formed in the lower rear part of the sub-tan case 54 for rough selection. A chaff sheave 46, a fine sorting grain pan 48, and an upper wind direction plate 55 provided on the bottom surface of the grain pan 45, and a lower wind direction plate 56 extending horizontally forward from the fine sorting grain pan 48, It is configured so as to be supplied for rough sorting that blows through between the grain sheave 49 and between the Strollac 47 and the second chaff sheave 50. The outer diameter (rotating diameter) of the auxiliary tongue 22 in a side view is set to ½ (or substantially ½) of the outer diameter (rotating diameter) of the tongue 21 in a side view.

  As a result, the sorting wind from the auxiliary tang 22 is leaked through the chaff sheave 46 in a state where the flow velocity is increased through the space of the rear constriction between the upper wind direction plate 55 and the lower wind direction plate 56, and the fine wind is used for fine sorting. It is possible to effectively act on the processed material flowing down to the grain pan 48 and the grain sieve 49 and the processed material flowing down from the rear end portion of the receiving net 16 and the stroller 47. As a result, the processed material has a small specific gravity. The wind sorting that blows away dust such as scraps and winds it upwards can be performed well, and this wind sorting more reliably suppresses the flow of dust such as soot scraps to the Glen Sheave 49 and No. 2 Chaff Sheave 50. Therefore, it is possible to improve the sorting efficiency and sorting accuracy in the Glen sheave 49 and the second chaff sheave 50.

  Further, since the sorting air from the sub-tang 22 becomes difficult to pass between the chaff plates 46A of the chaff sheave 46, the sorting air from the sub-tan 22 passes between the chaff plates 46A of the chaff sheave 46 vigorously. Therefore, the leakage from the chaff sheave 46 is suppressed, and the reduction of the sorting efficiency due to the increase in the amount of processed material transferred to the rear stroller 47 can be prevented.

  The No. 2 Kara 23 is arranged between the No. 1 recovery part 24 and the No. 2 recovery part 25 in the front lower part of the No. 2 chaff sheave 50 and is turned counterclockwise as viewed from the left side around the No. 2 Kara axis 57 The sorting wind is generated by rotating to the rear of the second chaff sheave 50 from the outlet 58A formed at the upper rear portion of the second Karatsu case 58 and passing under the second chaff sheave 50. As for the second sorting that blows out rearward and upward from the section, it is configured to be supplied toward the rear vertical wall 44A of the sheave case 44 that is the rear vertical wall of the swing sorting means 20. Further, the outlet 58A extends rearward so that the end on the lower side in the blowing direction coincides or substantially coincides with the front end of the second chaff sheave 50 in the front-rear direction, and the upper and lower guides thereof. The surface is formed in a tapered shape in which the vertical interval becomes narrower toward the lower side in the blowing direction. The upper guide surface of the air outlet 58A is formed in a bent shape in an inverted V shape when viewed from the side.

  In other words, the sorting air from the No. 2 Karatsu 23 can be blown out from the vicinity of the front end of the No. 2 Chaff sheave 50 in a state where the flow velocity is increased by the tapered outlet 58A. The wind can effectively act on the processed material flowing down the second chaff sheave 50 and flowing down to the second recovery unit 25. As a result, dust such as sawdust having a small specific gravity is blown from the processed material. In addition to the long sawdust that stays on the rear end portion of the second chaff sheave 50 due to being caught with the chaff flip plate 50A, it is possible to satisfactorily perform wind sorting that winds the wind from the rear end portion of the second chaff sheave 50 to the rear upper side. It is possible to collect the grain and bifurcated grains that are leaked from the second chaff sheave 50 and to the second collection unit 25 while preventing the dust from the second collection unit 25 from entering dust such as sawdust. 2nd recovery processing can be performed accurately that.

  Further, since the sorting wind from the No. 2 tang 23 becomes difficult to pass between the chaff plates 50 </ b> A arranged on the front side of the No. 2 chaff sheave 50, No. 2 due to the fact that the sorting wind from the No. 2 Karatsu 23 is not easily affected by the sorting wind from the No. 2 Kara 22 and passes between the cha-flip plates 50A on the front side of the No. 2 chaff sheave 50. Leakage from the front side of the chaff sheave 50 is suppressed, and a decrease in grain recovery efficiency due to an increase in the number of grains transferred to the rear of the sheave case 44 can be prevented.

  In the collecting unit 3C, the first collecting unit 24 is formed in a bottom-constricted shape in a side view that guides the first item leaked from the grain sieve 49 to the first item unloading region at the bottom. The second collecting part 25 is formed in a bottom-squeezed shape in side view that guides the second thing leaked from the second chaff sheave 50 to the second thing unloading area at the bottom. In addition, above the front part of the second collecting unit 25, the air outlet 58A of the second Chinese case 58 extends so as to cover from the front side.

  At the bottom of the first collecting part 24, the first thing flowing down to the first thing carrying-out area of the first collecting part 24 by rotating counterclockwise around the first screw shaft 59 facing left and right is seen. The 1st conveyance screw 60 conveyed to the right side is arranged. At the bottom of the second collecting part 25, the second thing that has flowed down to the second thing unloading area of the second collecting part 25 by rotating counterclockwise around the second screw shaft 61 facing left and right. A second conveying screw 62 that conveys to the right is provided.

  At the right end of the first conveying screw 60, a bucket-type conveying conveyor 63 that conveys the first item conveyed by the first conveying screw 60 to the upper portion of the bagging device 4 is linked and connected. At the right end of the second conveying screw 62, a reprocessing mechanism 64 for re-handling the second object conveyed by the second conveying screw 62, and the second object after the reprocessing by the reprocessing mechanism 64 are roughened. A screw-type second reduction screw 65 that is reduced and conveyed to the sorting gren pan 45 is interlocked and connected.

  In the lower part of the rear end of the threshing device 3, the threshing cereal that has flowed out from the discharge port 32 in accordance with the handling process or the long swarf carried out to the rear of the oscillating sorting means 20 by the sorting process is shredded. A chopper 66 for discharging is disposed. The chopper 66 is disposed on the chopper shaft 69 that is directed to the left and right with respect to a plurality of fixed blades 68 that are aligned and arranged at regular intervals in the left and right direction inside the sewage cover 67 that is connected to the lower rear end of the threshing device 3. A plurality of rotary blades 70 that are arranged and arranged at predetermined intervals in the circumferential direction and the left-right direction are configured to chop shattered cereals and the like by rotating counterclockwise around the chopper shaft 69 in the left side view. .

  As shown in FIG. 2 and FIG. 7, in this combine, an engine 72 is arranged below the driver seat 71 in the boarding operation unit 7, and the power from the engine 72 extends leftward from the engine 72. The output shaft 73 is branched for traveling and working.

  As shown in FIG. 7, the driving power is transmitted from the output shaft 73 of the engine 72 to the left and right crawler type traveling devices 6 via the driving transmission means A. The traveling transmission means A includes a belt transmission type transmission mechanism 74, a hydrostatic continuously variable transmission 75, a gear type transmission mechanism (not shown) built in the transmission case 76, and the like.

  As shown in FIGS. 4, 5, and 7, the working power is transmitted from the output shaft 73 of the engine 72 to the cutting and conveying apparatus 2 and the threshing apparatus 3 via the working transmission means B. The cutting and conveying apparatus 2 includes a rotating reel 9, a cutting mechanism 10, an auger 11, and a feeder 12 as driven devices C that are driven by power from the engine 72. In the threshing device 3, the driven device D driven by the power from the engine 72 includes a handling cylinder 19, a swing sorting means 20, a tang 21, a second tang 22, a second tang 23, a first conveying screw 60, 2 A number conveying screw 62, a lifting conveyor 63, a reprocessing mechanism 64, a second reducing screw 65, and a chopper 66 are provided.

  The working transmission means B decelerates and transmits the power from the engine 72 from the output shaft 73 of the engine 72 to the right end portion of the tang shaft 51 via the belt transmission type transmission mechanism 77, and the transmission direction of the tang shaft 51. The right end which is the upper end is branched into a high speed transmission system H and a low speed transmission system L.

  The high-speed transmission system H transmits the rotational power of the tang shaft 51 to the left end portion of the auxiliary tang shaft 53 from the left end portion, which is the end portion on the lower side of the transmission direction of the tang shaft 51, via the belt transmission type first transmission mechanism 78. The transmission speed is transmitted to the left end portion of the second tang shaft 57 and the relay shaft 79, and the speed increase transmission is transmitted from the relay shaft 79 to the left end portion of the chopper shaft 69 via the belt transmission type second transmission mechanism 80. It is.

  The low speed transmission system L decelerates and transmits the rotational power of the rotary shaft 51 from the right end portion of the hot shaft 51 to the right end portion of the left and right idler shaft 82 via the belt transmission type first reduction mechanism 81. The two-stage reduction type is configured to transmit the reduced speed from the left end portion to the left end portion of the first screw shaft 59 and the left end portion of the second screw shaft 61 via a belt transmission type second reduction mechanism 83. Further, the rotational power of the second screw shaft 61 is decelerated and transmitted to the swing shaft 85 of the swing sorting means 20 via a belt-transmitting third transmission mechanism 84.

  In other words, in the working transmission means B, the high speed transmission system H and the low speed transmission system L are branched at the right end portion of the red shaft 51 that transmits power from the engine 72, so that the high speed transmission is performed at the left end portion of the red shaft 51. Compared with the case of branching to the system H and the low-speed transmission system L, the load applied to the tang shaft 51 can be reduced.

  Then, the tang 21, the second tang 22, and the second tang 23 can be driven to rotate at a high speed, thereby generating a strong sorting wind from each of these tangs 21 to 23, and as a result, sorting by wind sorting. The accuracy can be improved. Further, the chopper 66 can also be driven to rotate at a high speed, and as a result, the chopper 66 can ensure high shredding performance.

  On the other hand, the 1st conveyance screw 60 and the 2nd conveyance screw 62 can be driven at a low speed at which grain damage caused by those screws hardly occurs. As a result, the conveyance by the 1st conveyance screw 60 and the 2nd conveyance screw 62 is possible. It is possible to prevent the grain quality from being deteriorated due to the damage of the grain. Further, the swing sorting means 20 can be driven to swing at a low speed, thereby reducing the grain recovery efficiency and the third loss due to the grain jumping by the high speed swing drive of the swing sorting means 20. Can be prevented.

  In addition, by configuring the low-speed transmission system L in a two-stage reduction type, the gear ratio in the first reduction mechanism 81 and the second reduction mechanism 83 can be reduced, and the first reduction mechanism 81 and the second reduction mechanism. As the pulleys 81A, 81B, 83A to 83C provided in the 83 or the like, those having a small diameter can be adopted. Thereby, interference with other objects such as the pulleys 81A, 81B, 83A to 83C can be easily avoided, and the speed reduction transmission from the Karatsu shaft 51 to the conveying screws 60, 62, etc. is facilitated. As a result, the assembling property and maintenance property of the working transmission means B can be improved.

  The working transmission means B includes a handling cylinder transmission system L1 that transmits power from the engine 72 to the handling cylinder shaft 18, and a cutting and conveying transmission system L2 that transmits to the feeder drive shaft 14 that is an input shaft of the cutting and conveying apparatus 2. In parallel.

  The handling cylinder transmission system L1 transmits power from the engine 72 via the Karatsu shaft 51 and the idler shaft 82 as a relay transmission shaft from the left end portion of the idler shaft 82 via a handling cylinder transmission mechanism 86. As an input shaft, it is transmitted to the left end portion of the left-right transmission shaft 88 provided in the transmission case 87, and is transmitted from the right end portion of the transmission shaft 88 to the handle cylinder shaft 18 through a bevel gear type transmission mechanism 89. is there. The transmission case 87 is connected to the upper front end of the upper frame portion 15 </ b> A in the threshing frame 15. The transmission shaft 88 is mounted on the left half of the transmission case 87 so that the left end of the transmission shaft 88 extends laterally outward from the left end of the transmission case 87. A bevel gear type transmission mechanism 89 is built in the left and right central portion of the transmission case 87.

  The cutting and conveying transmission system L2 transmits the power from the engine 72 via the Karatsu shaft 51 and the idler shaft 82 from the left end portion of the idler shaft 82 to the left end portion of the feeder drive shaft 14 via the transmission mechanism 90 for cutting and conveying. It is comprised so that it may do. The transmission mechanism 90 for cutting and conveying employs a belt tension clutch that enables intermittent transmission from the idler shaft 82 to the feeder drive shaft 14.

  The power transmitted to the feeder drive shaft 14 is transmitted to the first relay shaft 92 facing left and right via the chain-type first transmission mechanism 91, and is transmitted from the first relay shaft 92 to the cutting mechanism 10 via the linkage mechanism 93. In addition, the first relay shaft 92 is transmitted to the left-right auger shaft 95 via the chain-type second transmission mechanism 94, and the left-right direction first transmission is performed from the auger shaft 95 via the chain-type third transmission mechanism 96. The transmission is transmitted to the second relay shaft 97, and is transmitted from the second relay shaft 97 to the reel shaft 99 facing left and right via the belt transmission type fourth transmission mechanism 98.

  The right half of the transmission case 87 has a left-right reverse rotation shaft 100 that rotates integrally with the bevel gear 89A for taking out the reverse rotation power provided in the bevel gear type transmission mechanism 89, and the right end portion of the reverse rotation shaft 100 is the transmission case. Equipped to extend laterally outward from the right end of 87. A reverse rotation transmission mechanism 101 that allows transmission of reverse rotation power from the reverse rotation shaft 100 to the feeder drive shaft 14 is installed over the right end portion of the reverse rotation shaft 100 and the right end portion of the feeder drive shaft 14. It is. The reverse rotation transmission mechanism 101 employs a belt tension clutch that enables intermittent transmission from the reverse rotation shaft 100 to the feeder drive shaft 14.

  That is, during the harvesting operation, the mowing and conveying mechanism 90 is set in the transmission state, and the reverse rotation transmission mechanism 101 is set in the shut-off state, so that the mowing and conveying device 2 can be driven to rotate forward, and the cereals are harvested. Can be transported. Further, when clogging occurs in the cutting and conveying apparatus 2, the cutting and conveying apparatus 2 is rotated in reverse by switching the transmission mechanism 90 for cutting and conveying to the shut-off state and switching the transmission mechanism 101 for reverse rotation to the transmitting state. It is possible to drive, and the cereals jammed in the cutting and conveying device 2 can be easily removed.

  As shown in FIGS. 4, 5, and 7 to 9, the transmission shaft 88 of the barrel transmission system L <b> 1 is, as described above, the left half of the transmission case 87 connected to the upper front end of the upper frame portion 15 </ b> A in the threshing frame 15. Equipped to the department. The feeder drive shaft 14 is connected to the lower part of the front end of the upper frame portion 15 </ b> A in the threshing frame 15 via a pair of left and right bearing members 102. The idler shaft 82 is located outside the front end, which is the connecting end of the threshing device 3 with the cutting and conveying device 2, at a position closer to the sub-tang shaft than the tang shaft 51 and the sub-pin shaft 53. Thus, it connects with the front-end upper part of the lower frame part 15B in the threshing frame 15 via a pair of left and right bearing members 103.

  That is, the transmission shaft 88 that is an input shaft for the handling cylinder, the feeder drive shaft 14 that is the input shaft of the cutting and conveying device 2, and the idler shaft 82 are arranged in this order from the upper portion of the threshing device 3 to the lower portion. 82 is arranged so as to be lined up and down in a state of being close to the transmission shaft 88 and the feeder drive shaft 14 and substantially along the front end of the threshing device 3. As a result, the transmission mechanism 86 for the handling cylinder that interlocks and connects the idler shaft 82 and the transmission shaft 88 and the transmission mechanism 90 for cutting and transporting that interlocks and connects the idler shaft 82 and the feeder drive shaft 14 are obtained by the cutting and transporting device. 2 and the threshing device 3 can be compactly deployed in a state where the vertical length is narrow and the vertical length is as short as possible.

  As shown in FIGS. 4, 5, and 8, the transmission mechanism 86 for the handling cylinder includes a first pulley 86 </ b> A having a small diameter and a second pulley 86 </ b> B having a large diameter as a pair of large and small transmission rotating bodies 86 </ b> A and 86 </ b> B. These pulleys 86A and 86B are configured in a belt transmission type in which the pulleys 86A and 86B are wound around and interlocked with a transmission belt 86C. The first pulley 86A is connected to the left end portion of the idler shaft 82 by a boss portion 86Aa externally fitted so as to rotate integrally with the idler shaft 82, and is bolted to the boss portion 86Aa from the left outer side so as to rotate integrally with the boss portion 86Aa. The outer peripheral portion 86Ab has a small diameter. The second pulley 86B is bolted to the left end portion of the transmission shaft 88 from the left outer side to the boss portion 86Ba that is externally fitted so as to rotate integrally with the transmission shaft 88, and to the boss portion 86Ba so as to rotate integrally with the boss portion 86Ba. The outer peripheral portion 86Bb has a large diameter. The boss portions 86Aa, 86Ba and the outer peripheral portions 86Ab, 86Bb are boss portions 86Aa, 86Ba and outer peripheral portions 86Ab, 86Bb so that the outer peripheral portions 86Ab, 86Bb can be replaced with the boss portions 86Aa, 86Ba. The fitting diameter and the connecting location are the same.

  With this configuration, the transmission mechanism 86 for the handling cylinder has a small diameter in the boss portion 86Aa that rotates integrally with the idler shaft 82 by changing the outer peripheral portions 86Ab and 86Bb to the boss portions 86Aa and 86Ba. Low-speed transmission state for soybean, in which a large-diameter outer peripheral portion 86Bb is bolted to a boss portion 86Ba rotating integrally with the transmission shaft 88, and a boss portion 86Aa rotating integrally with the idler shaft 82 A large-diameter outer peripheral portion 86Bb is connected to a bolt, and a high-speed transmission state for rice wheat in which a small-diameter outer peripheral portion 86Ab is connected to a boss portion 86Ba rotating integrally with the transmission shaft 88 is configured to be switchable. .

  As shown in FIGS. 4, 5, 7, and 8, the feeder drive shaft 14, the idler shaft 82, and the transmission shaft 88 have their left end portions positioned on the left end of the traveling vehicle body 1. It extends to the left outward. At the left end of the idler shaft 82, an output pulley 90A of a cutting and conveying transmission mechanism 90, which is a transmission rotating body on the uppermost side in the transmission direction of the cutting and conveying transmission system L2, is rotated integrally with the idler shaft 82 by key connection. It is fitted outside. An output pulley 83A of the second reduction mechanism 83 is integrally formed at the right end portion of the output pulley 90A. A boss portion 86Aa of the first pulley 86A is integrally formed with the left end portion of the output pulley 90A.

  As shown in FIGS. 1 and 2, on the left side of the threshing device 3, a transmission mechanism 86 for a handling cylinder and a transmission mechanism 90 for harvesting and conveying provided at the left outer front end of the threshing device 3 are provided from the left outer side. The first cover 104 and the second cover 105 that cover the first transmission mechanism 78, the second transmission mechanism 80, the second reduction mechanism 83, the third transmission mechanism 84, and the like that are disposed in the lower left lower portion of the threshing device 3 are covered with the second cover. A third cover 106 that is detachably mounted along with 105 from the left outer side, and is provided with a fourth cover 107 that covers the left side of the threshing part 3A from the left outer side. It is equipped to enable dynamic operation.

  From the above configuration, the working transmission means B removes the first cover 104 and the second cover 105 from the left side portion of the threshing device 3, and the transmission mechanism for the handling cylinder located at the left end portion of the traveling vehicle body 1. By changing the outer peripheral portions 86Ab and 86Bb to the boss portions 86Aa and 86Ba in 86, the transmission state for the handling drum 19 can be easily switched between the high-speed transmission state for rice and the low-speed transmission state for soybeans. As a result, when harvesting difficult-to-damage rice, wheat, etc., the processing capacity can be improved by switching the transmission state for the handling drum 19 to the high-speed transmission state for rice wheat, which is easily damaged. When harvesting soybeans and the like, the deterioration of quality due to damage during handling can be prevented by switching the transmission state for the barrel 19 to the low-speed transmission state for soybeans. That.

  Then, regardless of the switching of the transmission state with respect to the handling cylinder 19, the driving speed when the cutting and conveying apparatus 2 is driven to rotate in the forward direction, the swing selecting means 20, the tangs 21 to 23, and the conveying screws 60, 62, and 65. , And the drive speed of the chopper 66 can be kept constant, thereby reducing the cutting and conveying performance of the cutting and conveying device 2 due to the switching of the transmission state with respect to the handling cylinder 19, and the selecting performance of the selecting unit 3B. In addition, it is possible to prevent a decrease in sorting efficiency, a decrease in the transport performance of the transport screws 60, 62, 65, a decrease in the shredding performance of the chopper 66, and the like.

The working transmission means B can be configured as follows, for example, instead of the above configuration.
[1] The high-speed transmission system H is driven by rotating the rotary shaft 51 from the right end, which is the upper end of the transmission direction of the rotary shaft 51, to the right end of the auxiliary rotary shaft 53 and the right end of the second rotary shaft 57. The speed increasing transmission is made to the right end portion of the chopper shaft 69.
[2] The low-speed transmission system L is driven by rotating the rotary shaft 51 with the right end of the first screw shaft 59 and the right end of the second screw shaft 61 from the right end, which is the upper end of the transmission shaft 51 in the transmission direction. And a speed reduction transmission to the right end of the swing shaft 85.
[3] The handling cylinder transmission system L <b> 1 is configured to be transmitted to the handling cylinder 19 from the right end or left end of the red collar shaft 51 or the right end of the idler shaft 82.
[4] The cutting and conveying transmission system L2 is configured to be transmitted to the cutting and conveying apparatus 2 from the right end or the left end of the rod shaft 51 or the right end of the idler shaft 82.
[5] The first transmission mechanism 78 and the second transmission mechanism 80 of the high-speed transmission system H, the first reduction mechanism 81 and the second reduction mechanism 83 of the low-speed transmission system L, and the like are employed. Alternatively, a gear transmission type is used for the first reduction mechanism 81 of the low-speed transmission system L.
[6] A chain transmission type or a gear transmission type is adopted as the transmission mechanism 86 for the handling cylinder and the transmission mechanism 90 for the cutting and conveying.
[7] Large and small with respect to the transmission shaft on the lower side in the transmission direction (the idler shaft 82 or the Karatsu shaft 51) and the transmission shaft 88 on the lower side in the transmission direction, in which the transmission mechanism 86 for the barrel is linked and connected via the transmission mechanism 86. By replacing the pair of transmission rotating bodies 86A and 86B (the boss portions 86Aa and 86Ba and the outer peripheral portions 86Ab and 86Bb are integrally formed), the transmission with respect to the handling cylinder 19 is switched between two levels. Alternatively, a dedicated low-speed transmission attached to the combine for the transmission shaft on the lower side in the transmission direction (the idler shaft 82 or the Karatsu shaft 51) and the transmission shaft 88 on the lower side in the transmission direction that are linked and connected via the transmission mechanism 86 for the barrel. Transmission to the handling cylinder 19 by exchanging a pair of transmission rotators (integrated boss and outer periphery) and a pair of transmission rotators dedicated to high speed transmission (integrated boss and outer periphery) Is configured to switch between two levels of high and low. Alternatively, the transmission shaft on the lower side in the transmission direction (the idler shaft 82 or the Karatsu shaft 51) and the transmission shaft 88 on the lower side in the transmission direction that are linked and connected via the transmission mechanism 86 for the barrel are configured to be used for both high and low transmission. The outer periphery of a pair of transmission rotors dedicated to low-speed transmission and the outer periphery of a pair of transmission rotors dedicated to high-speed transmission are fitted to the bosses of the transmission rotor so as to rotate integrally. The transmission with respect to the handling cylinder 19 is configured to be switched between two stages of high and low by exchanging with the part.
[8] Since the reverse rotation power take-out bevel gear 89A, the reverse rotation shaft 100, and the reverse rotation transmission mechanism 101 are not provided, the cutting and conveying device 2 is configured not to be driven in reverse rotation.

  As shown in FIGS. 1, 4, and 5, a hydraulic oil tank 108 is disposed in the body frame 5 immediately before the threshing device 3 by using a space below the idler shaft 82.

  As shown in FIG. 3, the swing sorting means 20 shortens the front and rear lengths of the rough sorting grain pan 45 disposed on the front end upper portion and shortens the front extension length, thereby reducing the front end. The forward swing limit position is configured to coincide with (or substantially coincide with) the front end of the receiving net 16 (the front end of the handling section 34 of the handling cylinder 19) in the front-rear direction. In addition, the leakage of the processed material to the front of the swing sorting means 20 is prevented over the rear end portion of the grain guide plate 29 used as a support member for supporting the front end of the receiving net 16 and the front end of the swing sorting means 20. Leakage prevention means 109 is provided. The leakage prevention means 109 is composed of an upper leakage prevention plate 109 </ b> A that hangs downward from the rear end portion of the grain straw guide plate 29 and a lower leakage prevention plate 109 </ b> B that is erected at the front end of the sheave case 44. For each leakage prevention plate 109A, 109B, a canvas or a rubber plate is employed.

  With this configuration, it is possible to prevent the rocking sorting means 20 from unnecessarily rocking forward from the front end position of the receiving net 16, and thereby, the rocking between the tang rice bowl 21 and the grain straw guide plate 29. A large space can be secured in front of the dynamic sorting means 20, and by using this space to equip a larger sub-tang 22 to secure a sufficient sorting wind for a large amount of processed material. Can do.

  Further, while the swing limiter 20 is configured so that the forward swing limit of the swing sorting means 20 is close to the front end position of the receiving net 16 or near the front end position, the workpiece leaking from the front end of the receiving net 16 is swung. It is possible to reliably supply the sorting means 20, and it is possible to prevent the grain recovery rate from being lowered due to the processed material leaking forward of the swing sorting means 20.

  As shown in FIG. 3, in the swing sorting means 20, the rear end of the sheave case 44, which is the rear end, is rearward of the rear end of the receiving net 16 and the rear end of the handling cylinder 19 (rear end of the handling unit 34). The rear end side of the sheave case 44 is extended rearward so as to be located at a close position. The second chaff sheave 50 has a front end that extends forward and a rear end that extends to the rear end of the sheave case 44 so that the front end thereof coincides or substantially coincides with the rear end of the chaff sheave 46. It is.

  In other words, the swing sorting means 20 is handled so that the rear end of the swing sorting means 20 is positioned closer to the rear end of the handling cylinder 19 (the rear end of the handling section 34) than the rear end of the receiving net 16. It is configured to be arranged closer to the rear side with respect to the barrel 19 (the handling processing unit 34), and thereby, the processed material leaking from the rear end portion of the receiving net 16 is reliably supplied to the swing sorting means 20. It is possible to prevent the grain recovery rate from being lowered due to the leakage of the processed material to the rear of the rocking and sorting means 20. In addition, since the processing area (leakage area) of the second chaff sheave 50 is increased, the sorting processing capacity of the second chaff sheave 50 for the second processed product can be improved.

  The state (position) of the swing sorting means 20 indicated by a solid line in FIG. 3 is a state in which the front end of the swing sorting means 20 has reached the forward swing limit position. The state (position) of the rear end portion of the swing sorting means 20 indicated by a chain line is a state in which the rear end of the swing sorting means 20 has reached the rear swing limit position.

  As shown in FIGS. 3 and 6, the rear support member 31 extends from the lower part toward the rear of the swing sorting means 20 in a rearwardly inclined posture and flows down from the discharge port 32. In addition, a waste guide plate 110 is provided for guiding a discharged material such as long waste dust to a chopper 66 disposed behind the swing sorting means 20. As a result, the sorting at the second chaff sheave 50 caused by the discharge of the cereal cereals and the long swarf flowing down from the discharge port 32 without leaking from the receiving net 16 is supplied to the second chaff sheave 50. It is possible to prevent a decrease in efficiency and sorting accuracy.

  As shown in FIG. 3, the chaff sheave 46 has a longitudinal length La from the partition plate 39 to the front end of the chaff sheave 46 arranged at the front and rear intermediate portion of the handling section 34 of the handling cylinder 19. It is arranged in a state of being biased forward with respect to the partition plate 39 so as to be longer than the longitudinal length Lb. In other words, the swing sorting means 20 ensures a large processing area (leakage area) on the front side of the partition plate 39 in the chaff sheave 46, so that the processed material after the handling process is performed by the partition plate 39. Even if many of them leak to the front side of the swing sorting means 20, the processed material can be roughly roughly sorted by the chaff sheave 46.

  The front and rear length of the rough sorting grain pan 45 is substantially the same as the front and rear length La from the partition plate 39 to the front end of the chaff sheave 46 (or the front and rear length La from the partition plate 39 to the front end of the chaff sheave 46). The rear end portion of the rough sorting grain pan 45 and the front end portion of the chaff sheave 46 are positioned at the front and rear intermediate portions of the support plate 37 and the partition plate 39 for the front end. It is.

  As shown in FIG.4 and FIG.5, in the front part of the lower frame part 15B in the threshing frame 15, a pair of left and right front column members 111 and a pair of left and right rear column members supporting the front side of the threshing unit 3A 112 is erected so as to sandwich the intake port 52C for the red pepper formed at the left and right ends of the red pepper case 52 from the front and rear. Then, a front / rear facing rod support member 113 for rotatably supporting the left and right end portions of the rod shaft 51 across the lower side of the front column member 111 and the lower side of the rear column member 112 located on the same left and right side is used for the rod. It is constructed so as to cross the intake port 52C. Further, a front and rear side auxiliary rod support member 114 for rotatably supporting the left and right end portions of the auxiliary rod shaft 53 across the upper side of the front column member 111 and the upper side of the rear column member 112 located on the same left and right side is provided. The auxiliary tang case 54 is installed so as to traverse the auxiliary tang air inlets 54B formed at both left and right ends of the case.

  That is, using the pair of left and right front strut members 111 and the pair of left and right rear strut members 112 configured to have high strength to support the front side of the threshing portion 3A, Since support is made, the support structure can be simplified.

  As shown in FIG. 4, auxiliary intake ports 114 </ b> A for the auxiliary tang are formed in the left and right auxiliary tang support members 114 at positions before and after the auxiliary tang shaft 53. As a result, it is possible to improve the amount of intake air to the auxiliary tang 22 that is likely to be insufficient when the auxiliary tang support member 114 crosses the intake port 54B for the auxiliary tang, so that the wind selection by the selected air from the auxiliary tang 22 is good. Can be done.

  As shown in FIG. 3, the red pepper 21 is arranged so that the forward swing limit position of the front end of the swing sorting means 20 is located at a position immediately above the hot shaft 51 (or a position directly above). It is. Further, as described above, the forward swing limit position of the front end of the swing sorting means 20 is aligned with the front end of the receiving net 16 in the front-rear direction (may be substantially matched). In this way, by setting the swing limit position forward of the front end of the swing sorting means 20 and arranging the receiving net 16 and the tang 21, the accommodation space is located immediately above the front half of the tang 21. The auxiliary tang 22 is arranged in this accommodating space in a state where the front end of the tang 21 and the front end of the tang 22 are substantially matched (possibly coincident) in the front-rear direction.

  That is, the swing limit position forward of the front end of the swing sorting means 20, the head shaft 21 of the head 21 and the front end of the receiving net 16 are arranged on a substantially vertical line (or on the vertical line). Accordingly, the swing sorting means 20 is prevented from unnecessarily swinging forward from the front end position of the receiving net 16, and a large accommodation space is provided in front of the swing sorting means 20 above the front half of the tang 21. Can be secured, and a larger sub-tang 22 can be equipped using this accommodation space, and as a result, a more sufficient sorting wind can be secured for a large amount of processed material.

  As shown in FIG. 3, the tangs 21 and the tangs 22 are arranged so that their front ends substantially coincide with the front ends of the handling cylinders 19 provided in the upper frame portion 15 </ b> A of the threshing frame 15 in the front-rear direction. Is mounted on the lower frame portion 15B of the threshing frame 15. Thereby, compared with the case where the Kara 21 arranged at the front lower side of the swing sorting means 20 is placed rearward so that the front end thereof is located behind the front end of the handling cylinder 19, Since the front and rear lengths of the grain sieve 49 arranged at the lower portion can be increased and a large processing area (leakage area) of the grain sieve 49 can be secured, the grain recovery efficiency at the grain sieve 49 can be improved. In addition, the auxiliary tang 22 can be compactly arranged without protruding forward from the front end of the threshing frame 15, and an increase in the size of the threshing sorting structure resulting from the provision of the auxiliary tang 22 can be prevented.

In addition, in the threshing selection structure of the threshing device 3, it can also be configured as follows instead of the above configuration, for example.
[1] The sorting air from the sub-tang 22 is supplied to the oscillating sorting means 20 so that the sorting air from the sub-tan 22 is positively passed between the chaff plates 46A of the chaff sheave 46.
[2] The swing sorting means so that the swing limit position to the rear of the rear end of the swing sorting means 20 coincides or substantially coincides with the rear end of the handling cylinder 19 (the rear end of the handling processing unit 34) in the front-rear direction. The rear end side of 20 extends rearward from the rear end of the receiving net 16.

[Another embodiment]
[1] The combine may be a self-removing type configured so that only the granulated portion of the harvested cereal meal is treated.

[2] The power from the engine 72 may be branched in parallel to the high-speed transmission system H and the low-speed transmission system L at the left end, which is the lower end of the transmission shaft 51 in the transmission direction. The power from the engine 72 is directly branched in parallel to the high-speed transmission system H and the low-speed transmission system L without passing through the idler shaft 82 at the right end portion, which is the end portion on the upper side in the transmission direction of the Karatsu shaft 51. You may comprise.

[3] A drum-type drum having a cylindrical handling section may be adopted as the handling cylinder 19.

[4] The handling cylinder 19 is mounted on the traveling vehicle body 1 in the left-right direction so as to rotate about the left-right handling cylinder shaft 18 and is harvested from the harvesting and conveying device supplied to the left and right ends thereof. It may be configured to perform the handling process. In this case, the left and right end sides that are the upper side in the conveying direction in the handling process are the front side of the handling cylinder 19 (threshing device 3), and the left and right other ends that are the lower side in the conveying direction are the rear side of the handling cylinder 19 (threshing device 3). It becomes.

[5] As the No. 2 sorting body 50, a Strollac formed by arranging and arranging a plurality of rack plates formed in a saw blade shape in the front-and-rear orientation with a set interval in the left-right direction may be adopted.

  The power transmission structure of the combine according to the present invention is a normal combine configured to handle the entire harvested cereal meal, and a self-removal type configured to handle only the granulated portion of the harvested grain meal. Can be applied to combine.

2 Cutting and transporting device 19 Handling cylinder 51 Karatsu shaft 72 Engine 82 Idler shaft 86 Transmission mechanism 86A Transmission rotating body 86Aa Boss portion 86Ab Outer peripheral portion 86B Transmission rotating body 86Ba Boss portion 86Bb Outer peripheral portion 88 Transmission shaft lower side in the transmission direction 88 Side transmission shaft 89 Bevel gear type transmission mechanism 89A Reverse rotation power take-out bevel gear 90A Transmission rotation body 101 Reverse rotation transmission mechanism 104 Cover 105 Cover B Transmission means L1 Handling cylinder transmission system L2 Cutting and conveying transmission system

Claims (7)

In the transmission structure of the combine equipped with transmission means configured to transmit the power from the engine to the right and left tang shafts and transmit from the tang shaft to the cutting and conveying device and the handling cylinder,
A transmission structure for a combine, wherein the transmission means is provided in parallel with a cutting and conveying transmission system for transmitting the power from the rod shaft to the cutting and conveying apparatus and a handling cylinder transmission system for transmitting to the handling cylinder. The transmission means transmits power from the engine to one end portion of the rod shaft, transmits from one end portion of the rod shaft to one end portion of a left-right idler shaft, and from the idler shaft to the cutting conveyance transmission system It is configured to transmit in parallel with the barrel transmission system,
Equipped with a transmission mechanism comprising a pair of transmission rotors in the barrel transmission system, the other end of the idler shaft extends laterally outward so as to be positioned at the lateral side end of the vehicle body, and the idler shaft The combine transmission structure according to claim 1, wherein the transmission mechanism is linked and connected to the other end.   The transmission mechanism is configured to switch the transmission to the handling cylinder in two steps by changing the pair of transmission rotating bodies with respect to the idler shaft that is linked and linked via the transmission mechanism and the transmission shaft on the lower side in the transmission direction. The combine transmission structure according to claim 2.   A boss part externally fitted to either the idler shaft that interlocks and couples the pair of transmission rotating bodies via the transmission mechanism and a transmission shaft on the lower side in the transmission direction, and a laterally outer side to the boss part 3. The combine according to claim 2, further comprising: an outer peripheral portion that is bolt-coupled so as to be capable of rotating integrally with the boss portion, and the transmission to the handling cylinder is switched between two levels by changing the outer peripheral portion relative to the boss portion. Transmission structure.   The transmission rotating body provided on the uppermost side in the transmission direction of the cutting and conveying transmission system is connected to the other end portion of the idler shaft so as to be integrally rotatable, and the other end portion of the transmission rotating body is externally fitted to the idler shaft. The combine transmission structure according to claim 4, wherein the boss part is integrally formed.   The combine transmission structure according to any one of claims 2 to 5, further comprising a cover that detachably covers the transmission mechanism from a lateral side of a vehicle body.   The handling cylinder transmission system is configured to be transmitted to the handling cylinder via a bevel gear type transmission mechanism, the bevel gear type transmission mechanism is provided with a bevel gear for taking out reverse rotation power, and the transmission means is connected to the reverse It is configured to transmit from the bevel gear for taking out the rotational power to the cutting and conveying device through the transmission mechanism for reverse rotation, and the cutting and conveying transmission system and the reverse rotation transmission mechanism are switched between the transmission state and the cutoff state. The combine transmission structure according to any one of claims 1 to 6, which is configured to be possible.

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