JP2011036167A - Combine harvester - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a combine harvester that easily corrects a transport position of reaped grain culms to a feed chain. <P>SOLUTION: In the combine harvester having a reaping unit including a constitution in which grain culms of a plurality of rows reaped by a reaping blade are raked by a raking mechanism, the reaped grain culms are transported to the feed chain by a grain culm transport mechanism including a plant foot transport chain and a vertical transport chain and delivered, an ear tip transport path is formed above a plant foot transport path extending from the plant foot transport chain to the vertical transport chain, the ear tip transport path is formed of a transport tine divided into two parts of an upper transport tine on upstream side and an upper transport tine on downstream side and the upper transport tine on the downstream side is constituted so as to change a velocity ratio of the vertical transport chain velocity to the grain culm plant foot transport velocity. <P>COPYRIGHT: (C)2011,JPO&amp;INPIT

Description

  The present invention relates to a combine provided with a harvesting unit capable of controlling the conveying posture of a harvested cereal meal.

  Conventionally, this type of combiner generally includes a traveling machine body on which a threshing unit with a feed chain is mounted, and a reaping part attached to the front part of the traveling machine body. The cutting unit includes a cutting blade device, a culm pulling device, a scraping mechanism, a culm conveying device, and a weed board. Then, while raising the uncut rice cake with the weed plate and the rice cake pulling device, it is cut by a cutting blade device with a scraping mechanism and cut with a cutting blade device. While being transported by the grain feeder, it is inherited by the feed chain, and then threshing is performed in the threshing section.

  For example, if the type is a type that cuts 4 rows, the grain feeder of the harvesting unit includes a lower right conveyance chain that conveys the right 2 rows of harvested rice cake diagonally to the left and the left 2 rows of harvested rice cake. Is transported diagonally to the left, and the stock base is joined to the vicinity of the feed end of the lower right transport chain, and the head part of the four chopped cereals is gathered together and transported diagonally to the left. The vertical conveying chain as a vertical conveying device that conveys the stock part of the four chopped cereal grains that merged in the vicinity of the feed end of the lower right conveying chain toward the feed chain diagonally upward And an auxiliary conveyance chain that relays the conveyance of the stock portion of the harvested cereal meal between the vertical conveyance chain and the feed chain (see Patent Document 1).

  That is, the mechanism for conveying these harvested cereals after merging the two cropped grains is composed of a vertical conveyance chain that conveys the stock of the harvested cereals and an upper conveyance tine that conveys the tip. Each of them is driven to rotate at a predetermined speed so as to deliver the harvested cereals in a predetermined conveying posture to the feed chain.

Japanese Patent Laid-Open No. 2008-17

  However, when there is an overturned trap, it is raised by a tine and raised by a tine, and then delivered to the cutting section for harvesting. It will be. However, if the lodging is large and the tine pulling action is swung at the original timing and then triggered by the next succeeding tine, the culm stock already harvested by the cutting blade is the normal stock transport timing. Therefore, the tip side of the corn straw is conveyed later than the stock source side, and the conveying posture is inclined. When such a delivery delay on the tip side with respect to the stock side occurs, the tip is cut off, dust is generated, and an unnecessary load is applied to the operating system to eat horsepower. Therefore, it has become necessary to correct the feeding on the tip side in order to eliminate such an adverse effect. In this invention, the combine provided with the harvesting part which can control the conveyance attitude | position of the harvested cereal rice cake which solved the said subject is provided.

  Therefore, in order to solve the above-mentioned problem, the invention according to claim 1 is characterized in that a plurality of cereal grains cut by a cutting blade are raked by a rake mechanism, and the chopped pestle is set as a stock transport chain. In a combine having a reaper configured to be transferred to a feed chain by a cereal transfer mechanism having a vertical transfer chain, above the stock transfer path from the stock transfer chain to the vertical transfer chain A tip transport path is formed, and the tip transport path is configured by a two-part transport tine of an upper upper transport tine and a lower upper transport tine, and the lower upper transport tine is a grain of the vertical transport chain. The speed ratio to the stock transport speed can be changed.

  The invention according to claim 2 is characterized in that, in the combine according to claim 1, the upper transport tine on the upper side and the lower side is divided at a substantially starting position of the vertical transport chain.

  According to a third aspect of the present invention, in the combine according to the first or second aspect, the structure for changing the transport speed of the lower upper transport tine is arranged in parallel with the axis of the suspension sprocket of the lower upper transport tine. A plurality of intermediate gears that are arranged in the axial direction as much as possible so as to be intermittently connectable to the shaft cylinder, and one of them is meshed with the input gear; and A transmission mechanism for connecting / disconnecting the shaft cylinder and the plurality of intermediate gears via a locking ball by advancing / retracting operation of the speed change rod inserted in a freely reciprocating manner, and a plurality of the speed change rods connected in the axial direction of the suspension sprocket It is characterized by comprising output gears respectively meshed with a plurality of intermediate gears.

  According to invention of Claim 1, it becomes possible to change the conveyance attitude | position of a harvested grain potato more flexibly. Therefore, it is possible to maintain the conveying posture of the harvested cereal rice cake in a good state at all times and transfer it to the feed chain, and to control the conveying posture of the harvested rice cake rice cake to be supplied to the threshing section through the feed chain to an optimum state. And the load of the threshing operation can be reduced.

  According to invention of Claim 2, it becomes possible to change only the conveyance attitude | position of the harvested cereal rice cake after the harvested grain rice cake (conveyance rice cake) for several strips joins, and attitude control of the harvested grain rice cake is uniformly performed. Therefore, it is not conveyed in a polymerized state where the ridges cross each other.

  According to the invention of claim 3, it is possible to simplify the structure for changing the conveying speed on the tip side of the harvested cereal rice bran by the lower side upper conveying tine, and it is possible to arrange in a compact manner in the cutting part, and to change the speed Can also be ensured. Further, when the speed change rod is interlocked with a lever disposed in the vicinity of the seat of the driver, for example, the speed change operation can be easily performed while the operator is seated on the seat, and the operability can be improved. .

It is a whole side view of the combine which concerns on embodiment. It is typical explanatory drawing by the planar view of the cereal conveyance mechanism in the harvesting part of the combine. It is explanatory drawing which shows the speed change case which is an example of the change structure of the conveyance speed by the side of cutting grain head. It is a principal part enlarged view of the same speed change case. It is explanatory drawing which shows the connection structure of the transmission shaft cylinder and intermediate gear of the transmission case. It is a power transmission diagram of a combine. It is sectional drawing which shows the power transmission mechanism structure to a lower side upper conveyance tine.

  Embodiments of the present invention will be described below in detail with reference to the drawings.

[Outline of overall structure of combine]
The overall structure of the combine will be briefly described with reference to FIG. In the following description, “left” and “right” indicate the position and direction of the combine in the traveling direction.

  The combine in the present embodiment is for cutting four strands, and the combine A includes a traveling machine body 1 supported by a pair of left and right traveling crawlers 2. At the front part of the traveling machine body 1, a cutting part 3 that is taken in while harvesting cereals planted in a field is attached via an actuator (not shown) so that the amount of elevation can be adjusted.

  A threshing unit 4 having a feed chain 5 and a grain tank 6 for storing the grain after threshing are mounted on the traveling machine body 1 in a state of being side by side with respect to the traveling direction. In the present embodiment, the threshing unit 4 is disposed on the left side in the traveling direction of the traveling machine body 1, and the grain tank 6 is disposed on the right side in the traveling direction of the traveling machine body 1.

  Between the cutting unit 3 and the grain tank 6, a driving unit 8 having a steering handle 9 and a driving seat 10 for changing the direction and speed of the traveling machine body 1 is provided.

  In addition, although not shown, the driving unit 8 includes a main transmission lever, an auxiliary transmission lever, a threshing clutch lever, a harvesting clutch lever, and a lower-side upper conveyance for changing a conveyance speed of a lower-side upper conveyance tine 55b described later. A transmission lever (not shown) or the like is disposed in the vicinity of the driver seat 10.

  An engine 11 as a power source is disposed below the driving unit 8, and a transmission case 12 for appropriately shifting the power from the engine 11 and transmitting it to the traveling crawler 2 is disposed in front of the engine 11. Has been placed.

  The handling room of the threshing unit 4 has a built-in handling cylinder (not shown) for threshing the harvested cereal. Although not shown in the drawings, a swing selection mechanism that performs swing selection using a handling net or a chaff sheave and a wind selection mechanism that performs wind selection using a tang fan are arranged below the handling cylinder. The grains collected by the first receiving bowl (not shown) at the lower part of the traveling machine body 1 after the sorting by both the sorting mechanisms are passed through the first conveyor and the cereal conveyor (both not shown). Accumulated in the grain tank 6. The sawdust is sucked into a suction fan (not shown) disposed at the rear part of the threshing unit 4 and then discharged from the discharge port formed at the rear part of the traveling machine body 1 to the outside of the traveling machine body 1. The grain in the grain tank 6 is carried out of the traveling machine body 1 through the discharge auger 7.

  In addition, the waste handed over to the waste chain (not shown) from the rear end of the feed chain 5 is discharged to the rear of the traveling machine body 1 in a long state or by a waste cutter (not shown). After being cut to a suitable short length, it is discharged to the rear of the traveling machine body 1.

[Structure of the cutting part]
Next, the structure of the cutting unit 3 will be described mainly with reference to FIG. The cutting unit 3 is horizontally opened and closed around a vertical support shaft standing on the left side of the front part of the body frame 20 in order to facilitate maintenance of each device inside the engine 11, the engine 11, the transmission case 12, and the like. It is configured to be rotatable.

  The cutting unit 3 includes a scraping mechanism 50 including a star wheel 51, a scraping belt 52, a clipper-type cutting blade mechanism 13 having a plurality of cutting blades, and a stalk raising mechanism 14 for four rows. The cereal conveyance mechanism 15 and the weed board 16 are provided. The cutting blade mechanism 13 is disposed below the weeding frame 39 that constitutes the framework of the cutting unit 3. The grain raising mechanism 14 is disposed above the weeding frame 39. 58 is a raising tine of the grain raising mechanism 14.

  The corn straw transporting mechanism 15 is a main part of the present embodiment, and will be described later in detail, but is disposed between the corn straw pulling mechanism 14 and the front end of the feed chain 5. The weed board 16 protrudes in front of the lower part of the grain raising mechanism 14. The harvested cereal grains harvested by the harvesting unit 3 are transferred to the feed chain 5 and are threshed by the threshing unit 4.

  The corn straw transporting mechanism 15 is disposed between the corn straw pulling mechanism 14 and the start end portion of the feed chain 5, and nips and conveys the harvested corn straw harvested by the cutting blade mechanism 13 toward the feed chain 5. be able to.

  Power is transmitted from the engine 11 via the transmission case 12 to the cutting blade mechanism 13 and the culm raising mechanism 14 as well as the cereal conveying mechanism 15. That is, the power is transmitted from the power transmission shaft of the transmission case 12 connected to the engine 11 to the cutting input shaft 21 via the pulley and the belt transmission system, and the power is transmitted from the cutting input shaft 21 to the mechanisms 13 to 15. It is.

  As shown in the figure, the culm transport mechanism 15 includes a stock transport chain 53 and a vertical transport chain 56.

  Then, the four chopped cereals cut by the cutting blade mechanism 13 are scraped by a rake mechanism including a star wheel 51 and a scraping belt 52, and the stock base part of the chopped cereal mash is transferred to the stock transport chain 53. It is configured to be transferred to the feed chain 5 through the vertical transfer chain 56 and delivered.

  The stock transport chain 53 includes a lower right transport chain 53R that transports the right two chopped grains into the left diagonally rearward direction, and a left two strip cut cereal grain that is transported in the diagonally right rear to The lower left transfer chain 53L is joined to the vicinity of the feed end portion of the lower right transfer chain 53R.

  Then, the vertical transfer chain 56 disposed on the lower side of the stock transport chain 53 feeds the stock portion of the four cropped cereal rice cakes merged in the vicinity of the feed end portion of the stock transport chain 53 to the feed chain 5. It can be conveyed diagonally upward to the rear.

  Further, a tip transport path R2 is formed above the stock transport path R1 from the lower right transport chain 53R constituting the stock transport chain 53 to the vertical transport chain 56. An upper conveying tine 55 that conveys diagonally to the left while gathering together the tips of the harvested cereal grains is arranged, and further, the middle part of the harvested cereal grains near the stock between the vertical conveyance chain 56 and the feed chain 5 Auxiliary transfer chain 57 for relaying the transfer is provided.

  With such a configuration, the stock base portion of the four reaped cereal grains that have been sent in a lying position by the vertical conveyance chain 56 is nipped and conveyed by the auxiliary conveyance chain 57 and a nipping guide member (not shown), and the feed chain 5 Is inherited to the beginning of Then, the tip part of the harvested cereal rice bran that has been transferred to the feed chain 5 is threshed by the handling cylinder in the handling chamber of the threshing part 4.

  In the present embodiment, in the configuration described above, the upper conveyance tine 55 is configured by a two-division conveyance tine of an upper-side upper conveyance tine 55a and a lower-side upper conveyance tine 55b, and the lower-side upper conveyance tine 55b. The speed ratio of the vertical transfer chain 56 to the cereal stock transport speed can be changed.

  With such a configuration, it is possible to change the conveying posture of the harvested cereal meal more flexibly. That is, since it is possible to deliver the harvested cereal rice cake to the feed chain 5 while always maintaining the good posture of the harvested rice cake, the optimum conveying posture of the harvested rice cake to be supplied to the threshing unit 4 through the feed chain 5 is optimal. The state can be controlled. Therefore, it can prevent that the load of the threshing operation | movement in the threshing part 4 increases. A specific configuration for changing the speed ratio of the vertical transfer chain 56 to the grain stock former transport speed will be described in detail later.

  The upper and lower upper transfer tines, that is, the upper upper transfer tine 55a and the lower upper transfer tine 55b with variable cereal stock transfer speed are substantially at the start position of the vertical transfer chain 56. It is divided.

  By adopting such a configuration, the harvested cereal mash that is transported by the left and right strips by the stock transport chain 53 can change only the transport posture after the four chopped cereals have joined together, uniformly. Since the posture is controlled, it is not transported in a superposed state where the ridges cross each other.

  By the way, the upper transport tine 55 (upper side upper transport tine 55a and lower side upper transport tine 55b), the vertical transport chain 56, and the auxiliary transport chain 57 are the upper transport tine 55, auxiliary transport chain 57, They are arranged in the order of the vertical conveying chain 56. More specifically, the auxiliary transport chain 57 is sandwiched from above and below by the rear end portion of the upper transport tine 55 and the rear end portion of the vertical transport chain 56. The feed end portion of the auxiliary conveyance chain 57 is brought close to the start end portion of the feed chain 5 in order to smoothly deliver the harvested cereal meal with the feed chain 5.

  The power transmission mechanism to the upper side upper conveyance tine 55a is configured as follows. That is, as shown in FIG. 6, the cutting vertical axis 22 and the terminal sprocket 60 of the upper-side upper transport tine 55a are connected to each other via bevel gears 61, 63, 65 and the connecting shafts 62, 64, 66, so that the cutting vertical The cutting power from the shaft 22 is branched and transmitted to the terminal sprocket 60 to drive the upper side upper transport tine 55a.

  The power transmitted to the lower-side upper transport tine 55b is also transmitted through the transmission case 100, which will be described later, and the power branched from the cutting vertical axis 22 is transmitted to the lower-side upper transport tine 55b. The tip portion can be transported at a speed higher than that of the upper-side upper transport tine 55a.

  Here, with reference to FIGS. 3 to 5, a specific configuration for changing the speed ratio of the vertical conveyance chain 56 to the cereal stock source conveyance speed will be described. As shown in FIG. 3, in the present embodiment, there is provided a speed change case 100 in which the conveying speed on the tip side of the harvested grain culm is variable with respect to the grain culm stock conveying speed. In other words, in order to change the speed ratio of the vertical conveyance chain 56 to the grain stock source conveyance speed, power is transmitted via the transmission case 100 to the drive shaft that drives the suspension sprocket 90 of the lower upper conveyance tine 55b. Like to do.

[About transmission case]
As shown in FIG. 3, the transmission case 100 is attached to a tine case 93 that houses the suspension sprocket 90 and the chain 92 and is disposed in the tip conveyance path R. The transmission case 100 can transmit power to the case main body 101 in which the front case forming body 101a and the rear case forming body 101b are joined to each other via a connection bolt (not shown) via transmission gears having different gear ratios. In addition, a speed change mechanism having a variable rotational force is accommodated.

  The speed change mechanism includes an input shaft 103 to which power from the engine 11 is input, an output shaft 104 as a drive shaft with the suspension sprocket 90 of the lower-side upper transport tine 55b attached to the tip, and the rotational speed of the suspension sprocket 90. In order to change, a transmission shaft cylinder 105, which is a cylindrical transmission shaft interposed between the input shaft 103 and the output shaft 104, is installed in parallel. 106 is a bearing.

  In the transmission case 100, the input gear 301 is attached to the input shaft 103, the first to third output gears 401 to 403 are attached to the output shaft 104, and the transmission shaft cylinder 105 disposed therebetween is attached to the transmission shaft cylinder 105. First to third transmission gears 501 to 503 are attached as intermediate gears. In the present embodiment, the suspended sprocket 90 can be rotated at high speed in the order of the first output gear 401, the second output gear 402, and the third output gear 403.

  The intermediate gear constantly engages the input gear 301 with the first transmission gear 501 key-joined with the transmission shaft cylinder 105, and other second and third transmission gears 502 and 503 are detachably attached thereto. An intermediate gear including first to third transmission gears 501 to 503 meshes with first to third output gears 401 to 403 provided on the output shaft 104 respectively.

  The input shaft 103 is spline-fitted with the bearing cylinder 107, the input gear 301 is key-joined to the outer peripheral surface of the bearing cylinder 107, and is always meshed with the first transmission gear 501 key-joined to the transmission shaft cylinder 105. For this reason, the transmission shaft cylinder 105 is rotated by the rotation of the input shaft 103 transmitted through the input gear 301 and the first transmission gear 501.

  Further, the second transmission gear 502 and the third transmission gear 503 other than the first transmission gear 501 that are key-joined are freely loosely fitted to the transmission shaft cylinder 105 and are engaged with the transmission shaft cylinder 105. It is configured such that it can be engaged and disengaged via the stop ball 505 and the speed change rod 600.

  Here, FIG. 5 is an explanatory view of the AA cross section in FIG. 4 and shows a connection structure between the transmission shaft cylinder 105 of the transmission case 100 and the intermediate gear. As shown in FIGS. 4 and 5, the transmission shaft cylinder 105 is formed with four locking ball receiving holes 504 at equal intervals in the circumferential direction, and the four locking ball receiving holes 504, 504 are formed. , 504, 504 are formed in the axial direction at a predetermined interval, and another set is formed, and the locking balls 505 are accommodated in the respective locking ball receiving holes 504 so as to be movable forward and backward. Then, the second transmission gear 502 and the third transmission gear 503 are freely loosely fitted on the outer peripheral surface where the two sets of locking ball receiving holes 504 and 504 are located.

  A curved concave key engagement recess 506 is formed on each inner peripheral surface of the second transmission gear 502 and the third transmission gear 503 at a position facing the locking ball accommodation hole 504.

  In addition, as shown in FIGS. 3 to 5, a speed change rod 600 having a ball extruding portion 601 bulging formed in the middle portion is slidably inserted into the speed changing shaft cylinder 105. Each locking ball 505 is pushed out from the locking ball receiving hole 504 by 601 and engaged with either one of the second transmission gear 502 and the third transmission gear 503 by the key engagement recess 506. The intermediate gear of the engaged key engaging recess 506 is connected to the transmission shaft cylinder 105 so as to be interlocked.

  The first, second, and third transmission gears 501, 502, and 503 mesh with the first to third output gears 401 to 403 provided on the output shaft 104, respectively.

  Of the first to third output gears 401 to 403 provided on the output shaft 104, the second and third output gears 402 and 403 are key-connected, but the first output gear 401 is connected via a one-way clutch 700. Installed. Reference numeral 701 denotes a spacer.

  In addition, one end of the speed change rod 600 is connected to one end of a swing lever 109 pivotally connected to a bracket 108 protruding from the tine case 93 via a connection pin 602. Reference numeral 604 denotes a long hole formed in the swing lever 109 and into which the connecting pin 602 is loosely fitted.

  The other end of the swing lever 109 is connected to the end of a push-pull wire 603 that has a start end connected to a lower-side upper transport speed change lever provided in the operation unit 8.

  Thus, when the operator in the driving unit 8 looks at the conveying posture of the harvested cereal and determines that the conveying posture is disturbed, the disturbance in the conveying posture is a speed ratio between the tip carrying speed and the stock carrying speed. The operator often selects the first, second, or third transmission gears 501, 502, and 503 by operating the lower-side upper transfer gear shift lever to move the shift rod 600 forward and backward. Thus, the rotation transmitted from the engine 11 side to the suspension sprocket 90 can be changed.

  For example, when the ball push-out portion 601 of the speed change rod 600 is at the position indicated by the two-dot chain line (A) in FIG. 4, the locking ball 505 corresponding to the second speed change gear 502 also corresponds to the third speed change gear 503. Since neither stop ball 505 is pushed up, it does not engage with the key engaging recess 506. Therefore, the rotation of the input gear 301 is transmitted from the first transmission gear 501 to the first output gear 401, and the suspension sprocket 90 is rotated by the rotation defined by the first output gear 401, and is transported by the lower-side upper transport tine 55b. The speed is determined. That is, the power from the engine 11 side is transmitted in the order of the engine 11 side → the input shaft 103 → the input gear 301 → the first transmission gear 501 → the first output gear 401 → the output shaft 104 → the suspended sprocket 90.

  On the other hand, for example, when the speed change rod 600 is in the position of the solid line in FIG. 4, the ball pusher 601 pushes up the locking ball 505 corresponding to the second speed change gear 502 and engages with the key engagement recess 506.

  Therefore, when rotation is transmitted to the engine 11 side → the input shaft 103 → the input gear 301 → the first transmission gear 501 → the transmission shaft cylinder 105, the rotation of the transmission shaft cylinder 105 causes a larger diameter than the first transmission gear 501. Thus, the second transmission gear 502 having a different gear ratio is rotated. This rotation is transmitted to the second output gear 2, the suspension sprocket 90 is rotated by the rotation defined by the second output gear 402, and the conveyance speed by the lower-side upper conveyance tine 55b is changed. At this time, although the first output gear 401 meshed with the first transmission gear 501 also rotates, the rotation speed of the first output gear 401 is slower than that of the second output gear 402 and further through the one-way clutch 700. Since it is attached to the output shaft 104, the rotation of the first output gear 401 does not affect the output shaft 104.

  Further, when the speed change rod 600 is at the position indicated by the one-dot chain line (b) in FIG. 4, the ball push-out portion 601 pushes up the locking ball 505 corresponding to the third speed change gear 503 to engage with the key engagement recess 506. .

  Therefore, the power from the engine 11 side in this case is the engine 11 side → input shaft 103 → input gear 301 → first transmission gear 501 → transmission shaft 105 → third transmission gear 503 → third output gear 403 → output shaft. 104 → Suspension sprocket 90 is transmitted, and the suspension sprocket 90 is rotated by the rotation defined by the third output gear 403, and the conveyance speed by the lower side upper conveyance tine 55b is changed. Also in this case, the first output gear 401 meshed with the first transmission gear 501 also rotates, but the rotation speed of the first output gear 401 is slower than that of the third output gear 403, and as described above, the one-way clutch Since it is attached to the output shaft 104 via 700, the rotation of the first output gear 401 does not affect the output shaft 104.

  Thus, according to the present embodiment, when the uncut grain culm is in a fallen state, when the fallen cereal is raised and caused by the tine 58, the stock transportation timing by the stock transportation chain 53 is determined. Thus, the raising timing of the fallen cereals is delayed, that is, the harvested cereals that have been harvested with the delayed timing are delayed and are conveyed to the lower side in the direction of the feed chain 5. In this case, the shifting operation in the shifting case 100, that is, the accelerating operation corrects the tilted conveying posture according to the inclination of the culm as much as possible and corrects the crushed conveying posture. It is not necessary to transfer the cereal to the feed chain, and in the threshing operation in the threshing unit 4 in the subsequent process, it is possible to prevent a problem that the unhandled grains increase. Moreover, it is possible to change only the conveying posture of the harvested cereal mash after the two sown cereals from the left and right merge, and the posture of the harvested cereals is uniformly controlled, so It is not transported in a crossed polymerization state.

  In the present embodiment, in the lower side upper transfer tine, the transmission shaft cylinder 105 disposed in parallel with the axis of the suspension sprocket 90 of the lower side upper transfer tine 55b, and the outer periphery of the transmission shaft cylinder 105, First, second, and third transmission gears 501, 502, and 503 (intermediate gears), which are arranged in the axial direction as much as possible in the transmission shaft cylinder 105 so as to be intermittent, and one of them is meshed with the input gear 301. The transmission shaft cylinder 105 and a plurality of intermediate gears (first, second, and third transmission gears 501, 502,. 503) and a plurality of transmission mechanisms in the axial direction of the suspension sprocket 90 (including a speed change rod 600, a stop ball 505, a stop ball receiving hole 504, and a key engagement recess 506). And set are configured for housing and first to third output gears 401 to 403 in mesh each of the plurality of intermediate gears (first, second and third gear 501, 502, 503).

  Therefore, it is possible to simplify the structure for changing the cutting speed of the cutting grain side by the lower side upper transfer tine 55b, and the speed change case 100 can be arranged in the cutting part 3 in a compact manner, and the speed changing operation is also possible. It can be certain.

  Further, since the speed change rod 600 is interlocked and connected to the lower-side upper transport speed change lever disposed in the vicinity of the driver seat 10 of the driver 8, an operator who visually recognizes the transport posture of the harvested cereal is seated on the driver seat 10. Therefore, the speed change operation can be easily performed while maintaining the operability.

  As described above, the power transmitted from the engine 11 side to the input shaft 103 of the transmission case 100 is shifted through the gear group in the transmission case 100 and output to the output shaft 104 from the transmission case 100, so Power is transmitted to the suspension sprocket 90 for driving the side upper conveyance tine 55b.

  Here, the interlocking mechanism from the engine 11 to the input shaft 103 of the transmission case 100 will be described.

  That is, as shown in FIGS. 6 and 7, the output from the engine 11 is transmitted to the cutting input shaft 21 in the cutting unit 3, and the cutting vertical axis 22 connected obliquely downward from the middle part of the cutting input shaft 21. Power is transmitted to. A branch output shaft 24 is branched from the middle of the cutting vertical axis 22 via a bevel gear 23 meshing, and the branch output shaft 24 is linked to an input shaft 103 of the transmission case 100 via a linkage gear 25. In the figure, reference numeral 21a denotes a cutting input two-shaft linked to the cutting input shaft 21, 26 denotes a branch case in which a branch output shaft 24 and an interlocking gear 25 are casing, and one end of the branch case 26 is connected to the cutting section 3 The other end of the branch case 26 is integrally attached to the input shaft 103 side of the transmission case 100. In other words, the branch case 26 is interposed between the case 27 of the cutting vertical axis 22 of the cutting unit 3 and the transmission case 100. Reference numeral 40 denotes a cutting horizontal axis linked to the cutting vertical axis 22 via a bevel gear, 41 denotes a pulling shaft linked to the cutting horizontal axis 40 via a bevel gear, and 59 denotes an upper left conveying tine.

  Although the combine according to the present embodiment has the above-described configuration, the combine configuration is not limited to the illustrated one, and various modifications can be made without departing from the spirit of the present invention. In particular, the speed change case 100 may have any configuration as long as the speed ratio of the transport speed of the lower-side upper transport tine 55b to the cereal stock transport speed of the vertical transport chain 56 can be changed.

A Combine 1 Traveling machine body 2 Traveling crawler 3 Cutting part 4 Threshing part 5 Feed chain 6 Grain tank 7 Discharge auger 8 Driving part 9 Steering handle 50 Stuck mechanism 51 Star wheel 52 Belt 53 Stock transport chain 55 Upper transport tine 55a Upper side upper transfer tine 55b Lower side upper transfer tine 56 Vertical transfer chain 57 Auxiliary transfer chain 90 Suspension sprocket 91 Drive shaft 92 Chain 93 Tine case 100 Transmission case 101 Case body 103 Input shaft 104 Output shaft 105 Transmission shaft cylinder 301 Input gear 401 1st output gear 402 2nd output gear 403 3rd output gear 501 1st speed change gear 502 2nd speed change gear 503 3rd speed change gear 504 Locking ball accommodation hole 505 Locking ball 506 Recessed part for key engagement 600 Shifting rod 601 Ball push-out Part 602 connecting pin 603 push-pull wire

Claims (3)

A plurality of stalks harvested by a mowing blade are scraped by a scraping mechanism, and the harvested stalks are transported to a feed chain by a stalk transporting mechanism including a stock transport chain and a vertical transport chain. In a combine having a reaper configured to pass,
Form the tip transport path above the stock transport path from the stock transport chain to the vertical transport chain,
The tip transport path is configured by a two-part transport tine of an upper side upper transport tine and a lower side upper transport tine, and the lower side upper transport tine is a speed with respect to the cereal stock transport speed of the vertical transport chain. A combine that is characterized in that the ratio can be changed.   The combine according to claim 1, wherein the upper conveyance tine on the upper side and the lower side is divided at a substantially starting position of the vertical conveyance chain.   The structure for changing the transport speed of the lower-side upper transport tine includes a shaft cylinder arranged in parallel with the axis of the suspension sprocket of the lower-side upper transport tine, and an outer periphery of the shaft cylinder, which can be intermittently connected to the shaft cylinder. A plurality of intermediate gears arranged in the axial direction as much as possible, one of which is meshed with the input gear, and the shaft cylinder via the locking ball by advancing and retreating operation of the speed change rod inserted into the shaft cylinder so as to freely advance and retract. And a plurality of intermediate gears, and a plurality of intermediate gears, and a plurality of intermediate gears connected to the suspension sprockets, and output gears respectively engaged with the intermediate gears. The combine according to claim 1 or 2.

Images