JP2015027264A - Combine - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a combine which enhances the safety of a work environment of an auxiliary worker, reduces a work burden of the auxiliary worker, and can efficiently perform reaping/threshing work.SOLUTION: There is provided a control device (85) which lowers a rotation number of an engine (62) to a value lower than a rated rotation number at a manual handling mode which maintains a transfer speed (VF) of a feed chain (12B) at a prescribed transfer speed, and when a traveling speed of a traveling device (2) is high, automatically switches the manual handling mode to a reaping/threshing mode which makes the transfer speed (VF) of the feed chain (12B) synchronized with the transfer speed (VH) of a reaper (4), and performs a gear change, and increases the rotation number of the engine (62) to the rated rotation number.

Description

  The present invention relates to a combine equipped with a feed chain for supplying cereal meal to a threshing apparatus.

  In the harvesting operation with the combine, while the combine is running, the nail flour grains in the field are harvested with the harvesting device installed at the front, and the harvested grain straw is transferred to the rear as it is to feed and hold the threshing device It is the main work to automatically pass between the straws and carry out threshing while being transferred by the feed chain. There is a case where the handling operation is performed.

If foreign objects (hats, gloves, work tools, stones, pieces of wood, etc.) are fed between the feed chain and the holding bowl during the automatic delivery or manual supply of the harvested cereals, it may lead to equipment failure. Usually, an emergency stop means is provided in the threshing device, and a means (Patent Document 1) is proposed in which the engine is stopped by the stop operation of the emergency stop means and the drive of the feed chain is stopped accordingly. .
Also, in order to stop the drive of the feed chain quickly, the tension roller that presses the feed chain is separated from the feed chain, the feed chain wound around the tensioning wheel is removed, and the drive to the feed chain is performed. Means (Patent Document 2) for blocking the transmission of force has been proposed.

JP 2001-90567 A JP 2010-235252 A

However, in the means of Patent Document 1, the driving of the engine and the feed chain is stopped by operating the stop means in order to prevent the peripheral device from being damaged by the foreign matter sandwiched between the feed chain and the holding rod. Inexperienced assistant workers may not be able to keep up with the feed chain transport speed during handling operations, and forget to switch from handling operations to main operations due to the heavy workload. There was a problem.
Further, in the method of Patent Document 2, when the removal of the foreign matter is finished and the combine is restarted, it is necessary to remove the cover or the like provided outside the feed chain and wind the feed chain around the tensioning wheel. There was a problem that increased.

  Therefore, the main problem of the present invention is to eliminate such problems.

The present invention that has solved the above problems is as follows.
The invention according to claim 1 is a traveling device (2) disposed below a body frame (1) on which an engine (62) is mounted, and a traveling device (2) disposed in front of the body frame (1). A reaping device (4) driven at a speed synchronized with the traveling speed of the reaping device, a threshing device (3) disposed behind the reaping device (4), and a handling room (50) of the threshing device (3). A combine comprising a feed chain (12B) arranged along a handle (26B) formed on one side,
In the peripheral part of the feed chain (12B), a cutting and threshing mode in which the conveying speed (VF) of the feed chain (12B) is changed in synchronization with the conveying speed (VH) of the cutting device (4), and the feed chain (12B) Is provided with a mode switch (6B) for switching to a handling mode for maintaining the transport speed (VF) at a predetermined transport speed, and in the mowing and threshing mode, the rotational speed of the engine (62) is set to a predetermined rating. If the engine speed is set to a lower speed than the rated speed and the traveling speed of the traveling device (2) is high during the handling mode, The combine is provided with a control device (85) for automatically switching from the cutting mode to the mowing and threshing mode to increase the rotational speed of the engine (62) to the rated rotational speed.

  According to a second aspect of the present invention, when the main speed change lever (16) for operating the traveling speed of the traveling device (2) is located in the forward speed increasing region beyond the neutral region, the handling mode The combine according to claim 1, wherein the engine is switched to a mowing and threshing mode to increase the rotational speed of the engine (62) to a rated rotational speed.

  According to a third aspect of the present invention, a base portion of a handle lever (38) extending toward the feed chain (12B) is rotatably supported at a rear portion of the mowing device (4), and the handle During the mode, the handle lever (38) is rotated upward to increase the distance between the rear part of the handle lever (38) and the front part of the feed chain (12B). The handle lever (38) is rotated downward to reduce the distance between the rear portion of the handle lever (38) and the front portion of the feed chain (12B). The handle lever (38) The combine according to claim 1 or 2, wherein a switch (38C) is provided in contact with the switch, and the switch (38C) is used as the mode switch (6B).

  The invention according to claim 4 includes a hydraulic continuously variable transmission (10) that continuously changes the rotation input from the engine (62) and outputs the rotation to the feed chain (12B) side, 12B), when the stop switch (6D) arranged at the periphery is operated, the engine (62) is automatically stopped and the output rotation of the hydraulic continuously variable transmission (10) is automatically performed. The combine according to any one of claims 1 to 3, further comprising a control device (85) for stopping.

  According to the fifth aspect of the present invention, when the reverse rotation switch (6C) arranged at the periphery of the feed chain (12B) is operated, the feed chain (12B) is directed in the direction opposite to that during threshing work. The combine according to claim 4, wherein the hydraulic continuously variable transmission (10) is configured to output in reverse so as to be driven.

  The invention according to claim 6 is the first transmission motor (10C) for rotating the trunnion shaft (10F) of the hydraulic continuously variable transmission (10), and the trunnion shaft (10C) than the first transmission motor (10C). A second speed change motor (10E) that rotates the motor 10F) at a high speed, and a structure that rotates the trunnion shaft (10F) by the second speed change motor (10E) when switched to the handling mode; The combine according to any one of claims 1 to 5.

  The invention which concerns on Claim 7 is equipped with the selection part (51) below the chamber (50) of the said threshing apparatus (3), and rotation of the said engine (62) rotates a threshing apparatus (3) and a feed chain (12B). And a second path (B) for transmitting the rotation of the engine (62) to the mowing device (4), and a sorting section (51) in the first path (A). The combine according to any one of claims 1 to 6, wherein a rotation of a counter shaft (71) arranged at a part upstream of the hydraulic input is input to the hydraulic continuously variable transmission (10).

  According to an eighth aspect of the present invention, the counter shaft (71) includes a first pulley (71C) that outputs rotation of the counter shaft (71) to the cylinder (55) side of the chamber (50), and a counter A second pulley (71E) that outputs the rotation of the shaft (71) to the sorting section (51) side, and a third pulley that outputs the rotation of the counter shaft (71) to the hydraulic continuously variable transmission (10) side The combine according to claim 7 provided with (71D).

  The invention according to claim 9 includes a support member (80) that supports a counter shaft (71) on the front wall (50A) of the threshing device (3), and in the axial direction of the counter shaft (71), The first pulley (71C) is disposed at a position biased to one side with respect to the support member (80), and the second pulley (71E) and the third pulley (71D) are arranged with respect to the support member (80). It is a combine of Claim 8 arrange | positioned in the site | part biased on the opposite side to the side which has arrange | positioned 1 pulley (71C).

  In the invention according to claim 10, the counter shaft (71) is arranged in the left-right direction in front of the front wall (50A) of the threshing device (3), and a feed chain ( 12B) is provided with a vertical feed chain rotation shaft (35B) for rotatably supporting the outer side of the machine body, and in a side view, the hydraulic continuously variable transmission (10) is connected to the counter shaft (71) and the feed chain. It is a combine of any one of Claims 7-9 arrange | positioned in the site | part between rotating shafts (35B).

  According to an eleventh aspect of the present invention, a drive shaft (68D) provided with a drive sprocket (17A) for driving the feed chain (12B) has a feed shaft rotating shaft (35B) and a counter shaft (71 The combine according to claim 10, which is disposed at a position between the input shaft (10A) and the counter shaft (71) of the hydraulic continuously variable transmission (10) in the vertical direction. .

  According to a twelfth aspect of the present invention, the driving sprocket (17A) is connected to the tip of the output shaft (68B) of the gear box (68) to which driving force is input from the hydraulic continuously variable transmission (10). Or a coupling (68C) connected to a drive shaft (68D) that supports the drive sprocket (17A), and when the feed chain (12B) is rotated outward of the machine body, The connection between the output shaft (68B) and the drive sprocket (17A) is released, or the connection between the output shaft (68B) and the drive shaft (68D) is released, and the feed chain (12B) is placed inside the body. When rotating in the direction, the output shaft (68B) and the drive sprocket (17A) are connected, or the output shaft (68B) and the drive shaft (68D) are connected. A combine according to any one of the configuration and claims 7-11.

  According to the first aspect of the present invention, the rotational speed of the engine (62) is set to a predetermined rated rotational speed during the threshing mode, and the rotational speed of the engine (62) is set to the rated rotational speed during the handling mode. When the traveling speed of the traveling device (2) is high, the mode is automatically switched from the handling mode to the mowing and threshing mode, and the engine (62) speed is increased to the rated speed. Since the control device (85) is provided, even an inexperienced auxiliary worker can safely place the harvested cereal meal on the upper side of the feed chain (12B). Moreover, even if the auxiliary worker reduces the work load and the auxiliary worker forgets to switch the mode from the handling mode to the mowing and threshing mode, clogging of cereals and the like may occur during the mowing and threshing operation. Can be prevented.

  According to the invention described in claim 2, in addition to the effect described in claim 1, the main transmission lever (16) for operating the traveling speed of the traveling device (2) has a forward speed increasing region exceeding the neutral region. In the case where the engine is located at a position, the hand-handling mode is switched to the mowing and threshing mode, and the rotational speed of the engine (62) is increased to the rated rotational speed. In addition, the workload of the auxiliary worker can be reduced.

  According to the invention described in claim 3, in addition to the effect of the invention described in claim 1 or 2, a switch (38C) that contacts the handle lever (38) is provided at the rear part of the cutting device (4), Since the switch (38C) is used as the mode switch (6B), it is possible to reduce forgetting to switch the mode from the handling mode of the auxiliary worker to the mowing and threshing mode.

  According to the invention of claim 4, in addition to the effect of the invention of any one of claims 1 to 3, the engine (62) is automatically turned on when the stop switch (6D) is operated. Since the output rotation of the hydraulic continuously variable transmission (10) is automatically stopped, when the stop switch (6D) is operated, the drive of the feed chain (12B) is immediately stopped. Further, it is possible to prevent the feed chain (12B) and the threshing device (3) from being damaged by the foreign matter sandwiched between the feed chains (12B). Further, after removing the foreign matter, the combine can be restarted promptly, and the burden of the foreign matter removal work can be reduced.

  According to the invention described in claim 5, in addition to the effect described in claim 4, when the reverse rotation switch (6C) is operated, the feed chain (12B) is directed in the direction opposite to that during the threshing operation. Since the hydraulic continuously variable transmission (10) is configured to output the reverse rotation so as to drive, the feed chain (12B) is rotated in the reverse direction to remove foreign matter or the like sandwiched between the feed chain (12B). ) Can be removed more easily by pushing back to the upstream side in the conveying direction.

  According to the invention described in claim 6, in addition to the effect of the invention described in claim 4 or 5, the second transmission motor that rotates at high speed only when the mode is switched to the handling mode by the mode switch (6B). Since the trunnion shaft (10F) is rotated by (10E), the feed chain (12B) can be stopped or reversed more quickly in the handling mode than in the harvesting and threshing mode. It is possible to effectively prevent the feed chain (12B) and the threshing device (3) from being damaged by the foreign matter mixed in. Moreover, in the cutting and threshing mode, the trunnion shaft (10F) is rotated with high accuracy so that the conveying speed of the feed chain (12B) becomes a target speed corresponding to the conveying speed (VH) of the cutting device (4). Therefore, the transportation of the cereal can be facilitated.

  According to invention of Claim 7, in addition to the effect of the invention of any one of Claims 4-6, it arrange | positions in the site | part upstream from the selection part (51) in 1st path | route (A). The rotation of the counter shaft (71) is input to the continuously variable transmission (10) that drives the feed chain (12B), so that the conveyance speed of the feed chain (12B) is independent of the conveyance speed of the reaping device (4). The transmission efficiency of the feed chain (12B) can be increased.

  According to the invention described in claim 8, in addition to the effect of the invention described in claim 7, from the countershaft (71), the handling cylinder (55), the selecting part (51), and the hydraulic continuously variable transmission (10). Therefore, the transmission structure of the threshing device (3) can be simplified, and the combine body can be made compact.

  According to the ninth aspect of the invention, in addition to the effect of the eighth aspect of the invention, the first pulley (71C) is disposed on one side with respect to the support member (80) in the axial direction of the counter shaft (71). The second pulley (71E) and the third pulley (71D) are arranged in a portion biased to the side opposite to the side on which the first pulley (71C) is arranged with respect to the support member (80). Because of the arrangement, the countershaft (71) is transmitted to the handling cylinder (55) having a large bending load and load applied by the transmission member to the sorting section (51) and the hydraulic continuously variable transmission (10). By dispersing the bending load applied by the member on both sides of the support member (80), it is possible to prevent the counter shaft (71) from being deformed and to improve durability and to improve transmission efficiency.

  According to the invention described in claim 10, in addition to the effect of the invention described in any one of claims 7-9, in the side view, the hydraulic continuously variable transmission (10) is connected to the counter shaft (71). And the feed chain rotating shaft (35B), the hydraulic continuously variable transmission (10) can be compactly arranged by effectively utilizing the space in front of the threshing device (3). .

  According to the eleventh aspect of the invention, in addition to the effect of the tenth aspect, the drive shaft (68D) provided with the drive sprocket (17A) for driving the feed chain (12B) is fed in the longitudinal direction of the fuselage. A portion between the chain rotation shaft (35B) and the counter shaft (71), and a portion between the input shaft (10A) and the counter shaft (71) of the hydraulic continuously variable transmission (10) in the vertical direction. Therefore, transmission to the feed chain (12B) can be easily performed.

  According to the invention of claim 12, in addition to the effect of the invention of any one of claims 7 to 11, when the feed chain (12B) is rotated toward the outside of the machine body, the output shaft (68B) and the drive sprocket (17A) are disconnected, and when the feed chain (12B) is rotated inward of the fuselage, the output shaft (68B) and the drive sprocket (17A) are connected. Since it is configured, during the maintenance / inspection work of the feed chain case (20), the gear box (68) is not transmitted to the feed chain (12B), and the safety of the maintenance / inspection work is improved.

It is a left view of a combine. It is a top view of a combine. It is a principal part left view of a threshing apparatus. It is principal part sectional drawing of a threshing apparatus. It is a principal part front view of a combine. It is a principal part front view of a combine. It is attachment explanatory drawing of the hydraulic type continuously variable transmission for feed chains. (A) of the hydraulic continuously variable transmission for feed chains is an enlarged sectional view, and (b) is an enlarged side view. It is a principal part transmission mechanism figure of a combine. It is a connection diagram of a control device. It is explanatory drawing of the 1st drive method of a feed chain. It is explanatory drawing of the 2nd drive method of a feed chain. It is explanatory drawing of the 1st stop method of a feed chain. It is explanatory drawing of the 2nd stop method of a feed chain. It is a principal part left view of a conveying apparatus. It is attachment explanatory drawing of the hydraulic continuously variable transmission for other feed chains. It is a plane sectional view of a handling room. It is a left view of the upper cover of a handling chamber. It is a front view of a treatment room. It is explanatory drawing of a barrel brake It is the E section enlarged view of FIG. It is the F section enlarged view of FIG. It is explanatory drawing of the drive method of the 1st hook by a 1st motor. It is explanatory drawing of the drive method of the 1st, 2nd hook by an opening / closing lever. It is explanatory drawing of the opening / closing method of the upper cover of a handling chamber. It is explanatory drawing of the drive stop method of the handling cylinder of a handling chamber. It is a flowchart of the emergency stop at the time of handling operation. It is a flowchart of the emergency stop at the time of normal cutting and threshing work. It is a flowchart at the time of emergency stop cancellation | release. It is a flowchart of the drive method of the feed chain at the time of the handling mode. It is a principal part front view of another opening-and-closing lever. It is a principal part side view of another opening-and-closing lever.

  Hereinafter, embodiments of the present invention will be described in detail with reference to the accompanying drawings. In addition, although the direction is shown and demonstrated for convenience for easy understanding, the configuration is not limited by these.

  As shown in FIGS. 1 and 2, the combine is provided with a traveling device 2 including a pair of left and right crawlers for traveling on the soil surface below the machine frame 1, and threshing / sorting on the upper left side of the machine frame 1. A threshing device 3 is provided, and a reaping device 4 is provided in front of the threshing device 3 to harvest cereal grains in the field. The grain threshed and selected by the threshing device 3 is stored in a Glen tank 5 provided on the right side of the threshing device 3, and the stored grain is discharged to the outside by the discharge cylinder 7. In addition, an operation seat 6 on which an operator rides is provided on the upper right side of the body frame 1, and an engine room 8 on which an engine 62 is mounted is provided below the operation seat 6.

<Mowing device>
The reaping device 4 is attached to a reaping frame 30 that is a main frame formed by a post-reaping frame 28 and a reaping transmission case 29 that is laterally provided at the front end of the post-reaping frame 28 in the left-right direction. The base part of the post-cutting frame 28 is attached to a portion that is biased to the right side of the horizontal transmission cylinder 36 that is pivotally supported on the upper part of a pair of left and right suspension stands 35, 35 erected on the body frame 1. .

  The reaping device 4 includes a weed culm 31 for weeding a planted cereal stalk provided at the lower part on the front side, a pulling device 32 for causing a lying planted cereal stalk provided at the rear of the weed culm 31, and a pulling device The cutting blade device 33 that cuts the root of the planted culm provided at the lower part of the rear 32, and the harvesting cereal provided at the rear of the pulling device 32 and the cutting blade device 33 on one side of the threshing device 3 And a conveying device 34 that conveys toward the provided threshing portion conveying device 12. The conveying device 34 includes a stock source conveying device 34 </ b> A that conveys the stock source side of the harvested cereal rice bran, and a tip conveying device 34 </ b> B that conveys the tip side, and from the conveying device 34 to the threshing portion conveying device 12. In order to prevent the fall of the cereal grains when taking over, the inner part (right side part) of the front end part of the threshing part transport apparatus 12 is supported from the rear end part of the transport apparatus 34 to the front end part of the handling chamber 50. A body 37 is provided.

  In order to increase the recovery rate of grain, a grain sensor that detects the amount of grain that is conveyed to the front and rear of the conveying device 34 of the harvesting device 4 where the harvested grains meet, the front side of the feed chain 12B, etc. It is preferable to provide 34C and switch the conveyance speed of the feed chain 12B in accordance with the output value of the grain culm sensor 34C.

As shown in FIG. 15, the terminal end of the conveying device 34 is provided at the terminal end of the conveying device 34 in order to prevent the posture of the cereals taken over from the terminal end of the conveying device 34 to the starting end of the feed chain 12B. A handle lever 38 that swings in the vertical direction about a shaft 38B extending in the left-right direction is provided. Below the handle lever 38, a fastening member such as a bolt is attached to a terminal portion of the transport device 34. An auxiliary rod 38A made of a spring plate or the like attached by means of is provided.
The handle lever 38 is formed to have a width in the left-right direction of the heel 12A, and the rear end portion of the handle lever 38 has a heel to prevent malfunction of the handle lever 38 due to vibration or the like. It extends below the front part of the collar 12A. The auxiliary rod 38A is formed to have a width in the left-right direction of the feed chain 12B. The front end portion of the auxiliary rod 38A extends to the front side of the front end portion of the handle lever 38, and the rear end portion is , Extending to the rear part of the flange 12A.
During normal mowing and threshing work, the handle lever 38 is swung downward about the shaft 38B (regulation) in order to restrict the pestle from being placed on the auxiliary rod 38A and the feed chain 12B. State). On the other hand, at the time of hand-handling work, in order to place the grain straw on the auxiliary straw 38A and the feed chain 12B, after lifting the front part of the straw 12A upward, the handle lever 38 is centered on the shaft 38B. Is swung upward (unregulated state).

  In order to improve the operability of the handle lever 38, the handle lever 38 is shifted from the heel 12A in the left-right direction, or the length of the handle lever 38 in the front-rear direction is shortened. The rear end portion of the handle lever 38 can be prevented from extending below the flange 12A.

It is also possible to provide a motor at the base of the handle lever 38 and remotely operate the motor from the operation seat 6 to swing the handle lever 38 in the vertical direction about the shaft 38B.
Further, when the handle lever 38 and the main transmission lever 16 are connected by a wire, the handle lever 38 is swung in accordance with the operation position of the main transmission lever 16, and the main transmission lever 16 moves to the front side. It is preferable to move the handle lever 38 downward to move it to the restricted state. When the main transmission lever 16 is moved forward, the rotation of the engine 62 is increased by the traveling hydraulic continuously variable transmission 66, and the traveling speed V of the traveling device 2 becomes high.
Furthermore, a mode switch 6B can be provided in the operation seat 6 in order to reduce the work burden on the auxiliary worker.

  In addition, in order to maintain a good posture of the cereal that is transferred from the conveying device 34 to the threshing portion conveying device 12, auxiliary conveyance is performed to a portion biased to the right side of the upper surface or the lower surface of the support 37 facing the tip conveying device 34B. A device can also be arranged.

  The auxiliary conveying device is provided with a belt with a lug and a bumped belt that move from the front side to the rear side in order to convey the ear of the cereal that has been taken over from the tip conveying device 34B to the feed chain 12B. Further, the rotation of a counter shaft 71, which will be described later, is transmitted to the auxiliary conveying device via an output shaft 10B of a feed chain hydraulic continuously variable transmission ("hydraulic continuously variable transmission" in the claims) 10. Therefore, it is preferable that the moving speed of the belt with the lugs is the same as the moving speed of the feed chain 12B. In place of the feed chain hydraulic continuously variable transmission 10, a hydraulic mechanical continuously variable transmission configured by combining a hydrostatic continuously variable transmission and a planetary gear may be used.

  As shown in FIGS. 3 to 5, the left suspension base 35 is attached to the upper side of a base 35 </ b> A erected on the body frame 1. A feed chain rotation shaft 35 </ b> B extending in the vertical direction is provided at the front portion on the left side of the suspension base 35 so as to rotatably support the base portion of the lateral transmission frame 35 </ b> C that pivotally supports the left side portion of the lateral transmission cylinder 36. Yes. Further, the horizontal transmission frame 36 is rotated around the feed chain rotation shaft 35B to facilitate maintenance / inspection work of the weed pod 31 and the pulling device 32 of the cutting device 4, etc. 35C is formed in the circular arc shape which has a convex part in the downward direction from the base part to the front-end | tip part in front view. As will be described later, the threshing section transport device 12 for transporting the cereals also rotates about the feed chain rotation shaft 35B.

  The right suspension base 35 is attached to the upper side of a base 35 </ b> A erected on the body frame 1. A support member 35 </ b> D that pivotally supports the right side portion of the lateral transmission cylinder 36 is attached to the upper end portion of the suspension base 35. The support member 35D includes a front support member and a rear support member that are divided into substantially semicircular arcs. When the right side portion of the horizontal transmission cylinder 36 is pivotally supported, the front and rear support members are engaged. Further, in order to perform maintenance of the mowing device 4 or the transmission 65, when the horizontal transmission cylinder 36 is rotated around the feed chain rotating shaft 35B and the mowing device 4 is moved to the left side, the front and rear sides are supported. The members are disengaged and the lateral transmission cylinder 36 is pulled forward. In order to increase the rigidity against deformation of the left and right suspension bases 35, 35, a connecting frame 35E is installed at the middle portion of the left and right suspension bases 35, 35 in the vertical direction.

  The rotation of the engine 62 is transmitted to the traveling hydraulic continuously variable transmission 66 via a pulley 66B supported by the input shaft of the traveling hydraulic continuously variable transmission 66, and is transmitted to the traveling hydraulic continuously variable transmission 66. The transmitted rotation is supported by the right end portion of the lateral transmission shaft 36A housed in the lateral transmission cylinder 36 via a pulley (not shown) supported by the output shaft of the traveling hydraulic continuously variable transmission 66. It is transmitted to the pulley 36B and rotates the lateral transmission cylinder 36 and the lateral transmission shaft 36A. The rotation transmitted to the lateral transmission shaft 36 </ b> A is transmitted to the pulling device 32, the cutting blade device 33, the conveying device 34, etc. of the reaping device 4 through transmission shafts (not shown) housed in the frames 27 and 28. Is done.

  The rotation of the engine 62 is transmitted to the traveling hydraulic continuously variable transmission 66 via a pulley 66B supported by the input shaft of the traveling hydraulic continuously variable transmission 66, and the traveling hydraulic continuously variable transmission for traveling. The rotation transmitted to 66 is transmitted to the left and right crawlers of the traveling device 2 via the transmission 65.

<Threshing device>
As shown in FIG. 4, the threshing device 3 includes a handling chamber 50 for threshing the cereal at the upper part on the front side, and a sorting chamber (sorting unit) for sorting the threshed grains below the handling chamber 50. 51 is provided.
In the handling chamber 50, a handling cylinder 55 having a plurality of teeth is supported by a handling cylinder shaft 55A that is pivotally supported by the front and rear walls 50A and 50C. A cereal supply port 26A is opened at the lower left side of the front wall 50A of the handling chamber 50, a handling port 26B is opened along the handling cylinder 55 at the lower side of the left wall 50B, and the lower left side of the rear wall 50C. The evacuation port 26C is opened. Further, on the left side of the handling chamber 50, a threshing section transporting device 12 is provided in parallel along the handling opening 26B so as to sandwich the cereal stock and transport it backward, and the threshing transported by the threshing section transporting device 12 is carried out. The completed sorghum cereal is taken over by a sewage transporting device 58 provided at the rear of the threshing unit transporting device 12 and further transported rearward, and then cut by a pair of scouring cutters 59 and discharged to the outside. .

  On the upper part of the sorting chamber 51, a swing sorting device 52 is provided, and on a transfer shelf forming the swing sorting device 52, a layer thickness sensor that detects a transfer amount of grains and the like on the swing sorting device 52. 52S is provided. Further, at the lower part of the sorting chamber 51, a first tang 53A for blowing air to the sheave at the front of the swing sorting device 52, a first receiving bowl 53B for collecting the grains leaking from the swing sorting device, The second tang 53C that blows air to the sheave at the rear of the swing sorting device, and the second receiving tray 53D that collects the grain (second product) to which the branch raft leaked from the swing sorting device is attached. It is installed in order from the front side. The grain recovered by the first receiving box 53B is transferred to the Glen tank 5 by the first transfer spiral 53b installed in the first receiving box 53B, and the grains and the like recovered by the second receiving box 53D are two. It is transferred to the second processing chamber by a second transfer spiral 53d built in the number receiving basket 53D.

  The rear part on the right side of the handling chamber 50 communicates with the dust treatment chamber. Inside the dust treatment chamber, a dust treatment cylinder 57 having screw blades on its outer peripheral surface is pivotally supported in the front-rear direction. A second processing chamber for processing and reducing the second product is provided on the front side of the chamber. In the second processing chamber, a second processing cylinder 56 having intermittent spiral blades on the outer peripheral surface is pivotally supported. In addition, a dust exhaust fan 48 is provided on the upper rear side of the oscillating sorting shelf to suck and discharge the waste generated during threshing and sorting.

<Threshing part conveyance device>
As shown in FIGS. 3 and 6 and the like, the threshing section transporting device 12 includes a clamping rod 12A located on the upper side and a feed chain 12B located on the lower side. The clamping rod 12A is urged toward the feed chain 12B by the urging means 14 such as a spring with respect to the upper cover 50D of the handling chamber 50. The feed chain 12B is wound around and driven by tensioning wheels 17B and 17B that are rotatably supported at the front and rear ends of the upper chain rail 18A, and a driving sprocket 17A provided between the tensioning wheels 17B and 17B. Is an endless chain. The working side feed chain 12B mounted on the upper chain rail 18A clamps the holding basket 12A and the grain base in the process of moving backward from the front side. In addition, in order to prevent the cereals to be conveyed from being wound around the end portion of the feed chain 12B, the rear tensioning wheel 17B uses an idle sprocket provided with anti-winding plates 17D on both sides. Is preferred.

A speed control dial is provided on the side surface of the upper cover 50D so that an auxiliary worker who is performing the handling operation can easily adjust the speed VF of the feed chain 12B during the handling operation to improve workability. 6A is provided. Further, in order to efficiently adjust the speed VF of the feed chain 12B in accordance with the amount of the handled grain culm, the speed control dial 6A is arranged around the auxiliary basket 38A on which the handled grain culm is mounted. In order to efficiently assist an auxiliary operator who is not familiar with the operator seated on the operation seat 6, the speed control dial 6 </ b> A can be disposed on the side panel of the operation seat 6.
In addition to the speed control dial 6A, or instead of the speed control dial 6A, a speed control pedal 45 for adjusting the speed VF of the feed chain 12B during the handling operation is provided on the machine body frame 1 in front of the threshing device 3. You can also

  In a side view, the sandwiching trough 12A is provided with a slope that rises rearward along the handling opening 26B from the grain supply port 26A to the discharge opening 26C of the handling chamber 50. The upper chain rail 18A on which the feed chain 12B on the working side is mounted tilts rearward and upward from the front front end of the horizontal shaft transmission cylinder 36 and then gently tilts rearward and forward of the grain supply port 26A of the handling chamber 50. After arriving, it faces and rises backward along the handling opening 26B from the grain supply port 26A of the handling chamber 50 to the discharge opening 26C, facing the holding bowl 12A. After that, after extending horizontally from the discharge port 26 </ b> C, it tilts backward and reaches the rear end behind the front end portion of the discharge conveying device 58. In order to easily change the length in the front-rear direction of the threshing section conveying device 12 in accordance with the change in the number of cutting lines of the mowing device 4, the upper chain rail 18A preferably has a split structure that can be divided in the front-rear direction. is there.

  The lower chain rail 18B on which the non-working-side feed chain 12B is mounted is inclined upward from the front end above the counter shaft 71 that transmits the rotation of the engine 62 to the drive sprocket 17A and reaches the rear end. The rear end of the lower chain rail 18B is provided in front of the rear extending wheel 17B and below the discharge port 26C.

  A guide 18D for guiding the non-operating feed chain 12B to a drive sprocket 17A provided below the front end of the lower chain rail 18B is detachably attached to the front end of the lower chain rail 18B. . The guide 18D is provided above the counter shaft 71 and has a substantially quarter circle shape. In addition, it is preferable to provide a cover (not shown) above the guide 18D in order to prevent the counter shaft 71 and the like from being soiled by dropping of oil or the like.

  On the lower side of the lower chain rail 18B, an upper chain rail 18A and a support frame 19 that supports the lower chain rail 18B are provided by a rail connecting plate 18C. That is, the feed chain 12 </ b> B is supported by the support frame 19. In addition, the upper chain rail 18A and the connecting plate 18E connected to the lower chain rail 18B prevent the sawdust falling from the feed chain 12B being transported from the rice straw from dropping into the drive unit of the sorting chamber 51. A sawdust guide plate (not shown) is attached.

  As shown in FIGS. 3 and 5, the front end of the support frame 19 is attached to a plate 19A attached to a bracket 19B with bolts or the like. The bracket 19B is a feed chain rotating shaft provided on the left suspension base 35. It is rotatably attached to the upper and lower ends of 35B. When the feed chain 12B is rotated around the feed chain rotating shaft 35B, the feed chain rotating shaft 35B is wound around the feed chain 12B in order to reduce the intrusion of the front end portion of the feed chain 12B into the machine body. It is erected in the vicinity of the rear side of the front tensioning wheel 17B.

  In order to prevent the support frame 19 from interfering with the feed chain hydraulic continuously variable transmission 10 and the like, the input shaft 10A and the gear box 68 of the feed chain hydraulic continuously variable transmission 10 from the front end in a side view. After extending rearward between the output shafts 68B, the first transmission motor 10C is bent approximately 90 degrees in front of the first transmission motor 10C and extends upward. Then, after extending the front of the counter shaft 71 upward, it tilts upward from the lower side of the guide 18D along the lower side of the lower chain rail 18B, and substantially extends in the front-rear direction of the lower chain rail 18B. It reaches the center.

  As a result, when maintenance / inspection of the feed chain 12B, the feed chain hydraulic continuously variable transmission 10 and the like is performed, the support frame 19 is rotated about the feed chain rotation shaft 35B to thereby feed the feed chain 12B. This can be done easily by separating the rear part from the main body of the threshing device 3. In order to facilitate maintenance and inspection of the feed chain hydraulic continuously variable transmission 10, the feed chain rotating shaft 35 </ b> B is erected in front of the front portion of the feed chain hydraulic continuously variable transmission 10. ing.

  In a side view, the front tensioning wheel 17B is provided in the vicinity of the front of the horizontal shaft transmission cylinder 36 that transmits the rotation of the engine 62 to the cutting device 4, as shown in FIG. It is provided in the vicinity of the rear of the front end portion of the waste transporting device 58. The drive sprocket 17A is disposed between the front and rear tensioning wheels 17B and 17B in the front-rear direction and is biased toward the front tensioning wheel 17B. The drive sprocket 17A and the feed shaft 12B The counter shaft 71 that transmits the rotation of the engine 62 is positioned substantially at the center. Further, in the vertical direction, it is located at the approximate center of the support frame 19 extending rearward for supporting the counter shaft 71 and the lower chain rail 18B. Further, a tension sprocket 17C is provided between the front tensioning wheel 17B and the drive sprocket 17A. The base is supported by a drive shaft 68D described later.

  As a result, the feed chain 12B moves upward from the drive sprocket 17A, and then moves along the tension sprocket 17C to reach the front tensioning wheel 17B. From the front tensioning wheel 17B to the upper chain rail 18A. The upper side moves toward the rear tensioning wheel 17B. Thereafter, the feed chain 12B moves from the rear tensioning wheel 17B toward the front lower chain rail 18B, and then moves from the rear end of the lower chain rail 18B to the upper side of the lower chain rail 18B with the front guide 18D. Then, it moves along the guide 18D and reaches the drive sprocket 17A.

  As shown in FIG. 6, the rotation of the engine 62 is transmitted to the feed chain hydraulic continuously variable transmission 10 through the counter shaft 71, and after being accelerated and decelerated by the key box 68, the driving of the threshing section transport device 12 is driven. It is transmitted to the output shaft 68B connected to the sprocket 17A.

  Both side portions of the counter shaft 71 are pivotally supported by a pair of support members 80 erected forward at the center of the front wall 50A of the threshing device 3 in the vertical direction. The rotation of the engine 62 is transmitted to the counter shaft 71 via a pulley 71 </ b> A supported on the right end portion of the counter shaft 71.

  The rotation transmitted to the counter shaft 71 is transmitted to the handling cylinder 55 via a pulley (a “first pulley” in the claims) 71C supported on the left side of the pulley 71A and the belt 92, and the left end of the counter shaft 71 A hydraulic continuously variable transmission for a feed chain via a pulley ("third pulley" in the claims) 71D supported on the right side of a pulley ("second pulley" in the claims) 71E, a belt 93, etc. It is transmitted to the input shaft 10 </ b> A of the device 10. The rotation transmitted to the input shaft 10A of the feed chain hydraulic continuously variable transmission 10 is transmitted to the gear box 68 via the output shaft 10B as shown in FIG. And transmitted to the output shaft 68B. The rotation transmitted to the output shaft 68B is transmitted to the drive sprocket 17A of the feed chain 12A via the coupling 68C. The drive sprocket 17A is rotatably supported on the drive shaft 68D.

  The drive shaft 68D is supported by a plate 19C attached to the right side of the support frame 19, and when the support frame 19 is rotated with respect to the feed chain rotation shaft 35B, the output shaft 68B by the coupling 68C and the drive sprocket 17A. Thus, the rotation of the engine 62 is not transmitted to the drive sprocket 17A, and the feed chain 12B, the guide 18D, etc. can be exchanged safely. Instead of the coupling 68C that connects the output shaft 68B and the drive shaft 68D, a meshing clutch and a pawl clutch may be provided at the ends of the opposed output shaft 68B and the drive shaft 68D.

As shown in FIG. 7, the carrier box 68 is attached to the right side surface of the rear plate 11 </ b> B that is erected forward at a portion biased to the lower side in the vertical direction of the front wall 50 </ b> A of the threshing device 3. Further, in order to effectively use the space on the front side of the threshing device 3, a feed chain hydraulic continuously variable transmission 10 is attached to the left side surface of the carrier box 68. Furthermore, the feed chain hydraulic continuously variable transmission A first transmission motor 10 </ b> C that rotates the trunnion shaft 10 </ b> F of the feed chain hydraulic continuously variable transmission 10 is attached to the rear side of the motor 10.
Further, as shown in FIG. 16, a first transmission motor 10C for rotating a trunnion shaft 10F of the feed chain hydraulic continuously variable transmission 10 on the rear side of the feed chain hydraulic continuously variable transmission 10; A second speed change motor 10E having a larger output than the speed change motor 10C and rotating the trunnion shaft 10F at a high speed can be mounted side by side.
The gear 10c of the first transmission motor 10C attached to the body frame 1 and the gear 10e of the second transmission motor 10E are engaged with the distal end of the sector gear 10G whose base end is supported by the trunnion shaft 10F. Yes. The control device 85, which will be described later, drives the first transmission motor 10C and rotates the trunnion shaft 10F in the normal mowing and threshing mode, and drives the second transmission motor 10E and rotates the trunnion shaft 10F in the handling mode. Note that the second speed change motor 10E freely rotates during the normal mowing and threshing mode, and the first speed change motor 10C freely rotates during the handling mode.

The feed chain hydraulic continuously variable transmission 10 and the carrier box 68 can be attached to the body frame 1, and the first transmission motor 10 </ b> C and the second transmission motor 10 </ b> E can be attached to the carrier box 68, and the input shaft 10 </ b> A is provided. Instead of the feed chain hydraulic continuously variable transmission 10 in which the pump unit and the motor unit including the output shaft 10B are integrated, a feed chain hydraulic continuously variable transmission in which the pump unit and the motor unit are divided is provided. It can also be used.
The first transmission motor 10 </ b> C shifts the feed chain hydraulic continuously variable transmission 10 in conjunction with the driving speed of the cutting device 4. Specifically, it is preferable to detect the rotational speed output from the traveling hydraulic continuously variable transmission 66 and transmitted to the reaping device 4, and to operate the first transmission motor 10C in accordance with the rotational speed. is there.

  The front end of the rear plate 11B and the rear end of the front plate 11A provided on the connecting frame 35E of the left and right suspension bases 35 and 35 are connected by loosely inserted pins in order to reduce vibration. . The rear portion of the rear plate 11B is connected to a bracket on the counter shaft 71 side by fastening means such as a bolt. Further, a cutting position sensor 36S that detects a vertical rotation position of the post-cutting frame 28 is provided below the horizontal transmission shaft 36A.

  On the left side of the right base 35A, as shown in FIG. 6, in order to shorten the hydraulic system path, hydraulic system paths such as the feed chain hydraulic continuously variable transmission 10 and the traveling hydraulic continuously variable transmission 66 are provided. A control valve 9A for controlling the opening and closing of the control valve 9A is provided. On the right side of the control valve 9A is an oil tank 9B for supplying oil to the feed chain hydraulic continuously variable transmission 10, the traveling hydraulic continuously variable transmission 66, and the like. Is provided.

  In order to effectively utilize the space below the front of the threshing device 3 and prevent the feed chain 12B, the belt 93 and the like from interfering with each other when the feed chain 12 rotates, the input shaft 10A of the feed chain hydraulic continuously variable transmission 10 is provided. The output shaft 10B and the output shaft 68B of the gear box 68 are provided vertically so as to be vertical.

  In order to prevent hydraulic pressure loss, the input shaft 10 of the pump portion of the feed chain hydraulic continuously variable transmission 10 is provided below the output shaft 10B to control the feed chain hydraulic continuously variable transmission 10 and control. The valve 9A and the hydraulic path are shortened.

  In order to facilitate winding of the feed chain 12B, the output shaft 68B of the gear box 68 is provided above the output shaft 10B of the feed chain hydraulic continuously variable transmission 10 to shorten the length of the feed chain 12B. ing.

<Top cover>
The upper cover 50D is pivotally fixed around the pin 101 with respect to the machine frame of the threshing device 3 by hinges 100 provided at two places in the front and rear, and between the upper cover 50D and the machine frame of the threshing device 3 Further, an urging means such as a gas spring is provided to urge the upper cover 50D to the side that raises the upper cover 50D (the side that rotates the upper cover 50D counterclockwise in the front view). During the cutting operation, the upper cover 50D is in a closed state in which the upper cover 50D covers the upper side of the handling cylinder 55 and the clamping rod 12A is in contact with the feed chain 12B. Further, in order to maintain the upper cover 50D in a closed state, a lock mechanism including a first hook 50G, a second hook 50H, a pin 50K, and the like is provided.
In order to easily remove foreign matter clogged between the feed chain 12B and the clamping rod 12A or the clamping rod 12C, a stop switch is provided at the front right side of the handling chamber 50 as shown in FIGS. A first motor 54 that is driven in conjunction with the 6D operation is provided. The arrangement position of the first motor 54 is not particularly limited and can be arranged at the rear part of the handling chamber 50. In order to simplify the structure of the connecting arm 54A and the hook arm 54B, the opening / closing lever 50E is provided. It is suitable to arrange in the site of the upper handling chamber 50.
In order to place the side portion of the holding lid 12A of the upper cover 50D in a semi-open state, a first hook 50G rotatably supported by a shaft 50F extending in the front-rear direction on the base cover 50D, and the handling chamber 50 The second hook 50H having a longer overall length than the first hook 50G whose base end portion is rotatably supported by the shaft 50F and the pin 50K are locked. This is done by The upper cover 50D is opened by releasing the lock state between the first hook 50G and the pin 50K and releasing the lock state between the second hook 50H and the pin 50K.
The half-open state refers to a state in which the side of the clamping rod 12A of the upper cover 50D is moved upward by approximately 50 to 100 mm to remove foreign substances clogged on the feed chain 12B, and the open state refers to the upper cover 50D. A state in which the side portion of the holding rod 12A is moved approximately 300 to 450 mm upward to perform maintenance / inspection work of the feed chain 12B.

  As shown in FIGS. 22 and 23, the first motor 54 and the first hook 50G are connected to a connecting arm 54A supported at a position where a base end portion (right end portion) is biased from the output shaft of the first motor 54, and a lower portion thereof. The shaft 50F is rotatably supported and is connected by a hook arm 54B whose lower end engages with the base end of the first hook 50G. Note that the upper end portion of the hook arm 54B is rotatably supported by the distal end portion (left end portion) of the connecting arm 54. Further, a long hole is formed in a portion of the connecting arm 54A on the first motor 54 side, and a pin of the first motor 54 is engaged with the long hole.

  When the first motor 54 is driven in conjunction with the operation of the stop switch 6D, the pin of the first motor 54 is engaged with the end (left end) of the long hole of the connecting arm 54A, and the tip of the connecting arm 54A is Move to the left in front view. When the distal end portion of the connecting arm 54A moves substantially leftward, the hook arm 54B moves upward (counterclockwise) about the shaft 50F in the front view. When the hook arm 54B moves upward, the base end portion of the first hook 50G engaged with the lower end portion of the hook arm 54B moves counterclockwise about the shaft 50F, and the first hook 50G is viewed from the front. It moves upward about the shaft 50F and the locked state with the pin 50K is released. It is preferable that the first motor 54 is driven in the reverse rotation so that the first hook 50G is moved clockwise around the shaft 50F and engaged with the pin 50K.

  After the locked state between the first hook 50G and the pin 50K is released, the second hook 50H having a longer overall length than the first hook 50G whose base end is supported by the shaft 50F is engaged with the pin 50K. The upper cover 50D is moved upward by the biasing means until the locked state is established, and a gap of about 50 to 100 mm is formed between the feed chain 12B and the clamp 12C.

As shown in FIGS. 21 and 24, an opening / closing lever 50E is provided to open the upper cover 50D when the first motor 54 cannot be driven due to disconnection or the like.
The base portion of the opening / closing lever 50E is rotatably supported by a shaft 50F between the first hook 50K and the second hook 50H, and the base portion is a piece 50L that engages with the base end portions of the first hook 50K and the second hook 50H. Is provided.

When the opening / closing lever 50E is moved upward (counterclockwise) about the shaft 50F, the piece 50L provided at the base of the opening / closing lever 50E engages with the base ends of the first hook 50K and the second hook 50H. When the opening / closing lever 50E is moved upward while the piece 50L is engaged with the base ends of the first hook 50K and the second hook 50H, the first hook 50K moves upward about the shaft 50F in a front view. The locked state with the pin 50K is released, and the second hook 50H also moves upward about the shaft 50F in a front view and moves to a position where it is not engaged with the pin 50K. Accordingly, even when the first motor 54 cannot be driven due to disconnection or the like, the upper cover 50D can be opened by operating the opening / closing lever 50E. As the first hook 50G is rotated by the operation of the opening / closing lever 50E, the connecting arm 54A moves to the left. However, since the connecting arm 54A is formed with a long hole, the first motor is moved. The connecting arm 54A can move to the left with respect to the 54 pins, and the upper cover 50D is opened.
In the present embodiment, the longitudinal length of the piece 50L of the opening / closing lever 50E is longer than the distance between the first hook 50K and the second hook 50H so that the upper cover 50D can be opened by the opening / closing lever 50E. However, the length of the piece 50L of the opening / closing lever 50E can be shortened to engage only with the first hook 50K so that the upper cover 50D can be in a half-open state.

(Other top cover locking mechanism)
Next, another lock mechanism of the upper cover 50D will be described. In addition, the same code | symbol is attached | subjected to the same member as the locking mechanism mentioned above, and the overlapping description is abbreviate | omitted.

As shown in FIGS. 31 and 32, the first hook 50G and the second hook 50H are rotatably supported at a predetermined interval on the front side of the first hook 50G on the shaft 50F extending in the front-rear direction. ing. The right end portion of the open / close lever 86 extending in the left-right direction is fixed to the left portion of the upper portion of the first hook 50G supported by the shaft 50F, and the auxiliary opening / closing portion is attached to the lower portion of the upper portion of the first hook 50G. A hollow support member 88 on which the lever 87 is mounted is fixed.
Note that, in a state where the opening / closing lever 86 is not operated, in order to bias the first hook 50G to a position engageable with the pin 50K, one end is connected to the first hook 50G and the other end is connected to the shaft 50F. A torque spring 50g connected to the peripheral member is attached to the shaft 50F so as to be close to the rear side of the first hook 50G. Similarly, when the opening / closing lever 86 is not operated, one end is connected to the second hook 50H to bias the second hook 50H to a position engageable with the pin 50K, and the other end A torque spring 50h connected to the peripheral member of the shaft 50F is attached to the shaft 50F so as to be close to the front side of the second hook 50H.

  The auxiliary opening / closing lever 87 includes a shaft 87A inserted through a hollow portion formed in the support member 88, a rectangular plate 87B attached to the right end portion of the shaft 87A, and an operation portion attached to the left end portion of the shaft 87A. 87C. In order to make the locking mechanism simple, the shaft 87A is disposed between the first hook 50G and the second hook 50H in the front-rear direction, and the plate 87B has a lower portion in the longitudinal direction of the plate 87B on the shaft 87A. Wearing.

  When the operation portion 87C is rotated clockwise with respect to the support member 88 and moved upward, the longitudinal direction of the rectangular plate 87B attached to the right end portion of the shaft 87A is arranged in the vertical direction. Therefore, the plate 87B and the second hook 50H are not engaged.

  On the other hand, when the operation portion 87C is rotated counterclockwise with respect to the support member 88 and moved downward, the longitudinal direction of the rectangular plate 87B is arranged in the left-right direction. The front end portion in the longitudinal direction engages with the second hook 50H.

When the opening / closing lever 86 is moved upward about the shaft 50F in a state where the operating portion 87C is rotated clockwise and moved upward, the shaft 50F is moved along with the upward movement of the opening / closing lever 86. The lower end of the first hook 50G rotates counterclockwise as the center, and the engagement with the pin 50K is released and the locked state is released.
After the locked state of the first hook 50G and the pin 50K is released, the upper cover 50D is moved upward by the urging means, and the second hook 50H longer than the first hook 50G is engaged with the pin 50K and is The cover 50D is half open.
When removing the foreign matter clogged on the feed chain 12B during the handling operation, the upper cover 50D resists the torque spring 50g that biases the first hook 50G to the engaged state when the upper cover 50D is in a half-open state. A force may be applied to the opening / closing lever 86, and even the auxiliary worker such as an elderly person or a woman can easily put the upper cover 50D in a half-open state.

On the other hand, when the opening / closing lever 86 is moved upward about the shaft 50F in a state where the operation portion 87C is rotated counterclockwise and moved downward, the opening / closing lever 86 is moved upward. The lower end of the first hook 50G rotates counterclockwise around the shaft 50F, and the engagement with the pin 50K is released and the locked state is released. Further, the lower end of the second hook 50H engaged with the plate 87B of the auxiliary opening / closing lever 87 connected to the lower end of the first hook 50G via the support member 88 rotates counterclockwise, and the second hook 50H. Moves to a position where the lower end of the pin cannot engage with the pin 50K.
After the locked state of the first hook 50G and the pin 50K is released, the upper cover 50D is moved upward by the biasing means, and the upper cover 50D is opened.

  In order to prevent scattering of grains, waste and the like to the outside, the position sensor that detects the moving state of the open / close lever 86 is used to move the open / close lever 86 upward even though the cutting device 4 is being driven. When movement is detected, it is preferable to warn of an abnormal state on a monitor provided in the operation seat 6. In order to facilitate the operation of the stop switch 6D in an emergency, it is preferable to dispose the stop switch 6D in the vicinity of the front side of the auxiliary opening / closing lever 87 and set the movement region of the auxiliary opening / closing lever 87 from 3 o'clock to 9 o'clock. is there. Furthermore, in order to reduce the work burden on the auxiliary operator, a wire can be connected to the auxiliary opening / closing lever 87 and the auxiliary opening / closing lever 87 can be operated from the operation seat 6.

<Narrow guide>
As shown in FIG. 2, a narrow guide 20 is provided on the left side (uncutted side) of the combine, which can be switched between an overhanging posture that protrudes outside the combine and a storage posture that is housed inside, as shown in FIG. It has been.

The narrow guide 20 includes a front side portion 20A and a rear side portion 20B that are connected in an indirect state, and the front end portion of the front side portion 20A is rotatable to the front end portion of the rearmost weeding frame on the leftmost weed body 31. The rear end portion of the rear side portion 20B is supported by a support member provided on the left side portion of the body frame 1 so as to be movable in the front-rear direction. Further, the narrow guide 20 is switched between an extended posture and a storage posture by switching means (not shown) having a link structure.
When the mode switch 6B is connected and the normal mowing and threshing mode is changed to the handling mode, the narrow guide 20 is maintained in the retracted position in order to prevent contact between the auxiliary operator performing the handling operation and the narrow guide 20. Is done.

<Transmission mechanism>
Next, the transmission mechanism of this embodiment will be described. As shown in FIG. 9, the rotation of the engine 62 includes a first path A transmitted to the feed chain hydraulic continuously variable transmission 10 and a second path B transmitted to the travel hydraulic continuously variable transmission 66. And is branched and transmitted to the third path C transmitted to the gear box 39 in front of the Glen tank 5.

  In the first path A transmitted to the feed chain hydraulic continuously variable transmission 10, the rotation of the engine 62 is performed by the pulley 70 </ b> A supported by the crankshaft 70, the belt 90, and the pulley 71 </ b> A supported by the countershaft 71. Is transmitted to the counter shaft 71 via The first path A is provided with a threshing clutch 90 </ b> A that connects and blocks transmission downstream of the belt 90.

  The rotation of the counter shaft 71 is transmitted to the second processing cylinder 56 and the dust removal processing cylinder 57 via the pulley 71B, the belt 91, and the like, and is transmitted to the counter shaft 72 via the pulley 71C, the belt 92, and the pulley 72A. The rotation of the counter shaft 72 is transmitted to the handling cylinder 55 and the waste transporting device 58 via the gear box 73 and the handling cylinder shaft 55A. A barrel shaft rotation sensor 55S for detecting the rotational speed of the barrel shaft 55A is attached to the end of the barrel shaft 55A.

In order to facilitate maintenance / inspection work of the gear box 73, as shown in FIG. 17, there is a gear box 73 and a handling shaft 55A on the front side of the gear box 73 provided on the front side of the handling chamber 50. A handling cylinder clutch 74 such as a meshing clutch or a claw clutch for operating connection or disconnection is provided. In order to reduce the number of parts constituting the clutch, it is preferable to provide the handling cylinder clutch 74 on the same axis as the handling cylinder shaft 55A.
The rotation input to the counter shaft 72 is transmitted to the intermediate shaft 102 by meshing of the spur gear. A bevel gear 102A is integrally provided at one end of the intermediate shaft 102, and meshes with a bevel gear 55B provided on the same axis as the handling cylinder shaft 55A. The bevel gear 55B is rotatably fitted to the outer periphery of the barrel shaft 55A, and the pawl clutch provided at the front end of the bevel gear 55B and the pawl clutch fixed to the barrel shaft 55A are engaged with each other. The rotation from the counter shaft 72 is transmitted to the handling cylinder shaft 55A.

  As shown in FIG. 20, the connection and disconnection of the barrel clutch 74 is performed by a second motor 74A provided on the upper side of the barrel clutch 74 that is driven in conjunction with the operation of the stop switch 6D. The second motor 74A and the handling cylinder 74 are composed of a crank arm 74B having a base end portion supported on the output shaft of the second motor 74A, a clutch arm 74E having a base end portion supported on the input shaft of the handling cylinder clutch 74, The arm 74B and the clutch arm 74E are connected by an arm 74C that interlocks.

  When the second motor 74A is driven in conjunction with the operation of the stop switch 6D, the distal end portion of the crank arm 74B is centered on the proximal end portion supported by the output shaft of the second motor 74A in the plan view shown in FIG. Oscillate and swing. The distal end portion of the crank arm 74B enters an opening formed in the arm 74C. When the crank arm 74B swings, the arm 74C swings left and right about the shaft 74D in plan view. When the arm 74C swings in the left-right direction, the distal end portion of the clutch arm 74E that engages with the notch portion formed in the intermediate portion of the arm 74C swings in the front-rear direction to move the base end portion of the clutch arm 74E. The input shaft of the supported barrel clutch 74 is rotated to connect or disconnect the barrel clutch 74.

  On the downstream side of the transmission of the cylinder clutch 74, a cylinder brake 75 such as a wet multi-plate brake for stopping the rotation of the cylinder 55A is provided as shown in FIG. Is provided. In order to facilitate maintenance and inspection work of the handling cylinder brake 75, it is preferable to support the handling cylinder brake 75 on a shaft 75B provided in parallel with the handling cylinder shaft 55A on the lower side of the gear box 73. The shaft 75B is interlocked with a spur gear fixed to the barrel 55A. When the barrel brake 75 brakes the shaft 75B, the rotation of the barrel 55A is stopped.

  As shown in FIG. 19, the handling cylinder brake 75 is connected or disconnected by a third motor 75 </ b> A provided above the handling cylinder shaft 55 </ b> A that is driven in conjunction with the operation of the stop switch 6 </ b> D. The third motor 75A and the handling cylinder brake 75 include a crank arm 75C having a base end supported on the output shaft of the third motor 75A, a brake arm 75E having a base end supported on the input shaft of the handling cylinder brake 75, The arm 75C and the brake arm 75E are connected by a connecting arm 75D. Note that the connecting arm 75D is formed of a spring and a steel material that function as a cushioning material in order to prevent a failure of the third motor 75A due to disturbance such as vibration generated when the cylinder barrel 55A is stopped.

  When the third motor 75A is driven in conjunction with the operation of the stop switch 6D, the distal end portion of the crank arm 75C is vertically moved around the base end portion supported by the output shaft of the third motor 75A in the front view. Swing. When the tip of the crank arm 75C swings in the vertical direction, the connecting arm 75D moves in the vertical direction. When the connecting arm 75D moves in the vertical direction, the distal end portion of the brake arm 75E connected to the lower portion of the connecting arm 75D swings in the vertical direction in front view to support the base end portion of the brake arm 75E. The input shaft of the handling cylinder brake 75 is rotated to connect or disconnect the handling cylinder brake 75.

  As shown in FIG. 9, the rotation of the counter shaft 71 is transmitted to the input shaft 10 </ b> A via the pulley 71 </ b> D, the belt 93, and the pulley 10 </ b> D supported by the input shaft 10 </ b> A of the feed chain hydraulic continuously variable transmission 10. Is done. Further, the counter shaft 71 is rotated through the pulley 71E supported on the left side of the pulley 71D and the belt 94 through the first tang 53A, the first transfer spiral 53b, the second tang 53C, the second transfer spiral 53d, the dust discharge. It is transmitted to the fan 48, the swing sorting device 52, and the waste cutter 59.

The rotation of the input shaft 10 </ b> A is transmitted to the gear box 68 via the output shaft 10 </ b> B, and after being increased / decreased by a plurality of gears 68 </ b> A built in the gear box 68, the rotation is performed on the output shaft 68 </ b> B supported by the gear box 68. Be transmitted.
The gear box 68 is provided with a feed chain speed sensor 10S that measures the rotational speed of the gear 68A provided in the output shaft 10B of the feed chain hydraulic continuously variable transmission 10.

  The rotation of the output shaft 68B is transmitted to the drive shaft 68D via the coupling 68C, and is transmitted to the feed chain 12B via the drive sprocket 17A supported on the left end of the drive shaft 68D. In order to easily rotate the feed chain 12B around a feed chain rotating shaft 35B provided upright on the left suspension base 35, as shown in FIG. The center of the feed chain rotating shaft 35B is provided, and the feed chain rotating shaft 35B extends vertically in the vertical direction. The left end of the output shaft 68B is on the left side of the left end of the counter shaft 71 as shown in FIG. The drive sprocket 17A is also extended to the left of the pulley 71E.

  A main transmission lever 16 for remotely operating the traveling hydraulic continuously variable transmission 66 is provided on the left side of the operation seat 6, and a transmission 65 is provided on the rear side of the main transmission lever 16 according to the lying state of the planted cereal. A sub-transmission lever 15 is provided for switching the stepped sub-transmission device provided in the transmission mechanism. The main transmission lever 16 is provided with a speed increasing switch 16A and a speed reducing switch 16B for remotely operating the feed chain hydraulic continuously variable transmission 10. When the acceleration switch 16A is pressed and held for about 2 seconds or longer, the rotation of the output shaft 10B of the feed chain hydraulic continuously variable transmission 10 can be changed to the maximum rotation speed, and the acceleration switch 16A is pressed for about 1 second. Then, the rotation of the output shaft 10B can be increased stepwise. Similarly, when the deceleration switch 16B is pressed and held for about 2 seconds or more, the rotation of the output shaft 10B of the feed chain hydraulic continuously variable transmission 10 can be changed to the minimum rotational speed, and the deceleration switch 16B is shortened by about 1 second. When pushed, the rotation of the output shaft 10B can be reduced stepwise. The speed increasing switch 16A and the speed reducing switch 16B are collectively referred to as a speed change switch S. A main transmission lever position sensor 16S that measures the transition position of the main transmission lever 16 is provided below the main transmission lever 16, and a sub-transmission position that measures the transition position of the sub-transmission lever 15 is provided below the sub transmission lever 15. A shift lever position sensor 15S is provided.

  In the second path B transmitted to the traveling hydraulic continuously variable transmission 66, the rotation of the engine 62 is caused by the pulley 70B supported by the crankshaft 70, the belt 96, and the traveling hydraulic continuously variable transmission 66. This is input to the traveling hydraulic continuously variable transmission 66 through a pulley 66B supported by the input shaft.

  The rotation of the input shaft of the traveling hydraulic continuously variable transmission 66 is transmitted to the transmission 65 via the output shaft of the traveling hydraulic continuously variable transmission 66 and is accelerated and decelerated by a plurality of gears built in the transmission 65. After that, the vehicle is transmitted to the traveling device 2 via left and right axles 65A that are pivotally supported by the transmission 65 and drive wheels 65B that are fixed to the front end of the axle 65A. In addition, the rotation of the output shaft of the traveling hydraulic continuously variable transmission 66 is performed from the output shaft 65C that is output from a portion of the transmission path in the transmission 65 that is closer to the auxiliary transmission than the auxiliary transmission device to the tip of the output shaft 65C. Is transmitted to a pulley 36B supported on the right end of the lateral transmission shaft 36A via an output pulley 65D and a transmission belt 65E. As a configuration for urging the tension roller to the transmission belt 65E, a cutting clutch 65F is configured.

That is, the rotation of the engine 62 transmitted to the input shaft of the traveling hydraulic continuously variable transmission 66 is increased and decelerated by the traveling hydraulic continuously variable transmission 66 and then branched, and one of them is pivotally supported by the transmission 65. Since the left and right axles 65A are transmitted to the crawler of the traveling device 2 and the other is transmitted to the pulling device 32 and the conveying device 34 of the reaping device 4 via the lateral transmission shaft 36A, the traveling speed of the traveling device 2 is increased. V, the pulling speed of the pulling device 32 of the reaping device 4 and the transport speed VH of the transport device 34 are determined with a certain relationship. For example, when the traveling speed V of the traveling apparatus 2 is increased, the pulling speed of the pulling apparatus 32 of the reaping apparatus 4 and the conveying speed VH of the conveying apparatus 34 are also increased, and the traveling speed V of the traveling apparatus 2 is decreased. In this case, the pulling speed of the pulling device 32 of the reaping device 4 and the transport speed VH of the transport device 34 are also low. The axle 65A and the lateral transmission shaft 36A are provided with a travel speed sensor 66S and a transport speed sensor 34S for measuring the rotational speed, respectively.
Further, in the transmission path in the transmission 65, left and right side clutch gears 65H are pivotally supported so as to be engaged and disengaged on both left and right side portions of the center gear 65G provided on the lower side of the auxiliary transmission. . Claw clutch type left and right side clutches 65I are formed between the center gear 65G and the left and right side clutch gears 65H, respectively. The left and right side clutches 65I mesh with left and right axle gears attached to the bases of the left and right axles 65A.

The left and right side clutches 65I slide the side clutch gear 65H in the left and right direction by a shifter (not shown) that is operated by a left and right tilting operation of a steering lever disposed in front of the operation seat 6, and from the center gear 65G. By separating it, the transmission is cut off.
Further, the left and right side clutches 65I are linked to the stepping operation of the take-in pedal 22 arranged on the front lower step of the operation seat 6, and when the take-in pedal 22 is depressed, the left and right side clutches 65I. The center gear 65G and the side clutch gear 65H are disengaged via 65I, and the rotation of the engine 62 is not transmitted to the axle 65A. On the other hand, when the depression of the brake pedal 22 is released, the center gear 65G and the side clutch gear 65H are engaged via the left and right side clutches 65I, and the rotation of the engine 62 is transmitted to the axle 65A. Further, in order to easily operate the take-in pedal 22 during the handling operation, the take-in pedal 22 can be driven by a motor, and during the handling operation, the operation can be changed to a stepping operation by driving the motor. . Note that a lower part of the sticking pedal 22 is provided with a sticking pedal sensor 22 </ b> S that detects a depression operation state of the sticking pedal 22.

When one side of the field is trimmed to the edge, the main transmission lever 16 is operated to the neutral position to stop the vehicle, the depression pedal 22 is depressed, and the center gear 65G and the side clutch gear 65H are connected via the side clutch 65I. The engagement is released and the rotation of the axle 65A is stopped.
When the main transmission lever 16 is operated to the forward side again with the combine stopped, the output shaft 65C is driven by the output of the traveling hydraulic continuously variable transmission 66, and the cutting device 4 is driven via the cutting clutch 65F. Is done. At this time, since the left and right side clutches 65I are disengaged, the traveling device 2 is not driven forward and maintains a stopped state. With this configuration, the planted culm that remains in the reaping device 4 in a state where it has been cut and advanced to the edge of the cocoon can be reaped by operating the drive pedal 22 and the main transmission lever 16.

Note that the mowing clutch 65F can be interlocked with the depression operation of the take-in pedal 22.
That is, when the take-in pedal 22 is depressed, the output shaft 65C of the transmission 65 and the lateral transmission shaft 36A of the reaping device 4 are connected via the reaping clutch 65F, and the reaping device 4 is driven. On the other hand, when the depression of the take-in pedal 22 is released, the connection between the output shaft 65C of the transmission 65 and the lateral transmission shaft 36A of the cutting device 4 is released via the cutting clutch 65F and the driving of the cutting device 4 is stopped. To do.

  When cutting one side of the field to the edge, the main shift lever 16 is operated to the neutral position to stop the vehicle body. When the take-in pedal 22 is depressed with the combine stopped, the reaping device 4 is driven. At this time, since the main transmission lever 16 is moved to the neutral position, the traveling device 2 is not driven forward and maintains the stopped state.

  In the third path C that is transmitted to the discharge spiral 39A of the Glen tank 5, the rotation of the engine 62 is caused by the pulley 70C supported by the crankshaft 70, the belt 97, the gear box 39, and the like below the Glen tank 5. Is transmitted to a discharge spiral 39A provided in The rotation of the discharge spiral 39 </ b> A is transmitted to an auger spiral 39 </ b> B housed in a discharge cylinder 7 provided behind the Glen tank 5. The third path C is provided with a discharge clutch 97A that connects and disconnects transmission downstream of the belt 97. Further, a discharge spiral sensor 39S that detects whether or not the discharge spiral 39A is rotating, that is, a discharge state of the grain stored in the Glen tank 5, to the outside is attached to one end of the discharge spiral 39A. A discharge cylinder sensor 7 </ b> S that detects the protruding state of the discharge cylinder 7 is attached to the outer cylinder portion of the cylinder 7.

<Control device>
On the input side of the control device 85 provided in the operation seat 6, as shown in FIG. 10, a travel speed sensor 66 </ b> S that detects the speed V of the travel device 2 and a speed VH of the transport device 34 of the reaping device 4 are detected. A feed speed sensor 34S that detects the speed VF of the feed chain 12B of the threshing section transport device 12, a sub-shift lever position sensor 15S that detects the lever position of the sub-shift lever 15, and a main shift lever. An increase / decrease switch 16A, 16B for increasing / decreasing the speed VF of the feed chain 12B provided at 16, and a speed adjusting dial 6A for increasing / decreasing the speed VF of the feed chain 12B provided on the side surface of the upper cover 50D; The mode switch 6B for switching to the handling mode and the feed chain 12B are reversely rotated from the rear side toward the front side. A reverse switch 6C, a culm sensor 34C for detecting the presence or absence of a culm conveyed on the feed chain 12B, a stop switch 6D for urgently stopping the drive of the feed chain 12B provided on the side surface of the upper cover 50D, A handling cylinder shaft rotation sensor 55S for detecting the rotation speed of the handling cylinder shaft 55A of the handling cylinder 55, a take-up pedal sensor 22S for detecting a depression operation state of the take-in pedal 22, and a rotational position of the post-cutting frame 28 in the vertical direction. A cutting position sensor 36S for detecting the discharge, a discharge spiral sensor 39S for detecting the discharge state of the grain stored in the Glen tank 5, and a discharge tube sensor 7S for detecting the protruding state of the discharge tube 7. A layer thickness sensor 52S for detecting the transfer amount of grains and the like on the swing sorting device 52, a fuel supply sensor 62B for detecting the presence or absence of fuel supply to the engine 62, and a first foot A hook sensor 50S for detecting the rotation of 50G, a threshing switch 6E for operating the connected state of the threshing clutch 90A, and a main transmission lever position sensor 16S for detecting the lever position of the main transmission lever 16 are connected via a predetermined input interface circuit. It is connected.
On the other hand, on the output side of the control device 85, a first transmission motor 10C that drives the trunnion shaft 10F of the feed chain hydraulic continuously variable transmission 10 in the normal cutting and threshing mode, and a feed chain hydraulic pressure in the handling mode. The second transmission motor 10E that drives the trunnion shaft 10F of the continuously variable transmission 10, the first motor 54 that drives the first hook 50G that maintains the upper cover 50D of the handling chamber 50 in the locked state, and the engine 62 The second motor 74A for driving the handling cylinder clutch 74 for connecting the transmission of the cylinder 55, the third motor 75A for driving the handling cylinder brake 75 for urgently stopping the handling cylinder 55, and starting / stopping the engine 62 are operated. The engine key 62 and a controller 62C mounted on the engine 62 for operating the output rotation of the engine 62 have a predetermined output interface circuit. They are connected to each other through.
The mode switch 6B is not limited to a switch that is manually operated by an auxiliary worker. That is, in order to prevent disturbance of the posture of the cereal that is handed over from the terminal end of the conveying device 34 of the cutting device 4 to the starting end of the feed chain 12B, the terminal end of the conveying device 34 has a hand that swings in the vertical direction. A handling lever 38 and an auxiliary rod 38A are provided below the handling lever 38. At the time of switching to the handling mode, by swinging the handling lever 38 upward about the shaft 38B in order to place the handling grain cereal on the auxiliary basket 38A and the feed chain 12B, Switch from restricted to unregulated state. A switch (mode switch) 38C that is turned ON / OFF in conjunction with an operation of swinging the handle lever 38 can be provided, and the switch 38C can be used as the mode switch 6B.

<Driving and stopping the feed chain>
Next, a method for driving / stopping the feed chain 12B of this embodiment will be described.
(First feed chain drive method)
FIG. 11 illustrates a first driving method of the speed VF of the feed chain 12B. The horizontal axis indicates the traveling speed V of the traveling device 2 detected by the traveling speed sensor 66S, and V1 and V2 are first and second set values of the traveling speed V, respectively. The left vertical axis indicates the speed VF of the feed chain 12B detected by the feed chain speed sensor 10S, VF1 and VF2 are the first and second set values of the speed VF of the feed chain 12B, and the right vertical axis indicates the conveyance speed. The speed VH of the transport device 34 detected by the sensor 34S is shown, VH1 and VH2 are first and second set values of the transport speed VH, and VH1 and 2 are the first and second set values of the travel speed V of the travel device 2. It corresponds to the speed of V1,2.
The solid line indicates the speed VF of the feed chain 12B, and the broken line indicates the speed VH of the transport device 34.

First, the control device 85 determines whether or not there is an input from the mode switch 6B. If it is determined that there is no input from the mode switch 6B, the control device 85 determines the speed VH (conveyance speed sensor 34S) of the transport device 34. It is determined whether or not the input value from (1) is lower than the first set value VH1.
When it is determined that the speed VH of the transport device 34 is lower than the first set value VH1, the speed VF of the feed chain 12B is controlled to the speed calculated by the following equation 1 as shown in the first state. Note that the transport speed VH of the transport device 34 with respect to the travel speed V of the travel device 2 varies depending on the gear position set by the auxiliary transmission lever 15.
Formula 1 VF = K × V
However, K = VH1 / V1

On the other hand, when it is determined that the speed VH of the conveying device 34 is equal to or higher than the first set value VF1, the speed VF of the feed chain 12B is calculated by the following equation 2 as shown in the second state. To control.
Formula 2 VF = VF1 + 1.5 to 2.5 × K × (V−V1)
However, K = (VH2-VH1) / (V2-V1)

Next, the control device 85 determines whether or not the speed VF of the feed chain 12B (input value of the feed chain speed sensor 10S) is lower than the second set value VH2 of the transport device 34.
When it is determined that the speed VF of the feed chain 12B is lower than the second set value VH2 of the transport device 34, the speed VF of the feed chain 12B is set to the speed calculated by Expression 2 as shown in the second state. Control.
On the other hand, when it is determined that the speed VF of the feed chain 12B is equal to or higher than the second set value VH2 of the transport device 34, the speed VF of the feed chain 12B is set to the second set value VF2 as shown in the third state. To maintain.

(Second feed chain drive method)
FIG. 12 illustrates a second driving method of the speed VF of the feed chain 12B. The solid line indicates the speed VF of the feed chain 12B, the broken line indicates the speed VH of the transport device 34, the same members as those in the first driving method are denoted by the same reference numerals, and duplicate descriptions are omitted.

First, the control device 85 determines whether or not there is an input from the mode switch 6B. If it is determined that there is no input from the mode switch 6B, the control device 85 maintains the speed VF of the feed chain 12B in the first to third states. To do.
On the other hand, when it is determined that the mode switch 6B has been input, the speed VF of the feed chain 12B is controlled to the speed calculated by the following equation 3. The speed VF of the feed chain 12B can be increased / decreased within a range of 10 to 20% by the governing dial 6A.
Formula 3 VF = 0.25-0.5 * VH1

  Grain clogging during normal mowing and threshing work that occurs when the auxiliary worker increases the safety of the working environment and the auxiliary operator forgets to return the handle lever 38 from the non-regulated state to the restricted state. In order to prevent such troubles as shown in FIG. 30, the mode switch 6B or the switch 38C provided at the base of the handle lever 38 is input, and the feed chain 12B is driven by the second driving method. In this state, the output speed of the engine 62 is set to a low speed that is slower than the rated speed, the lever of the main transmission lever 16 is in the forward speed increasing range beyond the neutral range, or the traveling speed V of the traveling device 2 is In a state where the speed is higher than 0.3 m / sec, it is preferable to set the output speed of the engine 62 to the rated speed.

First, in step S30, the control device 85 determines the input state of the switch 38C and the like provided at the base of the handle lever 38, and determines that the switch 38C or the like is not input and that it is during normal cutting and threshing. First, a predetermined signal is output to the controller 62C mounted on the engine 62, and the output rotation of the engine 62 is maintained at the rated rotation speed.
On the other hand, when the switch 38C or the like is input and it is determined that the handling operation is being performed, a predetermined signal is output to the controller 62C attached to the engine 62, and the output rotation of the engine 62 is set to be higher than the rated rotation speed. The speed is changed to a slow low speed, and the process proceeds to step S31.

  In step S31, in order to determine the lever position of the main transmission lever 16, the input value of the main transmission lever position sensor 16S that detects the lever position of the main transmission lever 16 is an acceleration that is positioned on the forward side beyond the neutral range. It is judged whether it is in the constant speed range located in the neutral zone or the neutral zone.

If it is determined that the input value of the main shift lever position sensor 16S is in the speed increasing range, the auxiliary operator may forget to return the handling lever 38 from the non-regulated state to the restricted state, and normal mowing and threshing In order to avoid problems that occur during work, the process proceeds to step S34.
In step S34, the input of the switch 38C or the like is canceled to change the mode from the handling operation to the normal mowing and threshing operation, and the process returns to step S31. As a result, the output rotation of the engine 62 is increased from the low speed to the rated speed.

  On the other hand, if it is determined that the input value of the main transmission lever position sensor 16S is in the constant speed range, the process proceeds to step S32.

  In step S32, in order to determine the traveling speed V of the traveling apparatus 2, the input value of the traveling speed sensor 66S that detects the traveling speed V of the traveling apparatus 2 is in a high speed range greater than 0.3 m / sec. It is determined whether the vehicle is in a low speed range smaller than 0.3 m / sec.

When it is determined that the input value of the traveling speed sensor 66S is in the high speed range, it is considered that the auxiliary operator's handle lever 38 is forgotten to return from the non-regulated state to the regulated state, and occurs during normal cutting and threshing work. In order to avoid the problem, the process proceeds to step S34.
In step S34, the input of the switch 38C or the like is canceled to change the mode from the handling operation to the normal mowing and threshing operation, and the process returns to step S31. As a result, the output rotation of the engine 62 is increased from the low speed to the rated speed.

  On the other hand, if it is determined that the input value of the travel speed sensor 66S is in the low speed range, the process proceeds to step S33, and the output rotation of the engine 62 is maintained at a low speed that is slower than the rated speed.

(First stop method of feed chain)
FIG. 13 shows a first stopping method of the feed chain 12B driven by the first driving method.
The operation state of the stop switch 6D is shown in the first stage from the upper side of FIG. 13, and in the second stage, the feed chain hydraulic continuously variable transmission 10 for increasing and decreasing the rotational speed transmitted to the feed chain 12B. The position of the trunnion shaft 10F is illustrated, and the speed VF of the feed chain 12B is illustrated in the third stage. Further, the driving state of the engine 62 is illustrated in the fourth stage of FIG. 13, and the speed VH of the transport device 34 provided in the reaping device 3 that is driven in conjunction with the traveling device 2 is illustrated in the lowermost stage. . In FIG. 13, the neutral position of the trunnion shaft 10F is set to zero.

  First, the control device 85 determines whether or not there is an input from the stop switch 6D. If it is determined that there is no input from the stop switch 6D, the control device 85 drives the feed chain 12B by the first driving method.

On the other hand, when it is determined that the stop switch 6D has been input, the first transmission motor 10C connected to the trunnion shaft 10F of the feed chain hydraulic continuously variable transmission 10 is driven, and the rotational position of the trunnion shaft 10F is determined. The rotation of the output shaft 10B of the feed chain hydraulic continuously variable transmission 10 is stopped by rotating to a neutral position. As a result, the driving force to the feed chain 12B is interrupted, and the rotation of the feed chain 12B stops.
When it is determined that the stop switch 6D has been input, the engine 62 is stopped to stop the rotation transmitted to the traveling hydraulic continuously variable transmission 66, and the traveling device 2 and the reaping device 4 are provided. The rotation of the transport device 34 is stopped.

  In order to stop the feed chain 12B more quickly, it is preferable to rotate the trunnion shaft 10F slightly beyond the neutral position to a position on the reverse side and then return to the neutral position.

(Second method for stopping the feed chain)
FIG. 14 shows a second stopping method of the feed chain 12B driven by the second driving method. In addition, the same code | symbol is attached | subjected to the same member as a 1st stop method, and the overlapping description is abbreviate | omitted.

  First, the control device 85 determines whether or not there is an input from the stop switch 6D. If it is determined that there is no input from the stop switch 6D, the control device 85 drives the feed chain 12B by the second driving method.

On the other hand, when it is determined that the stop switch 6D has been input, the rotation position of the trunnion shaft 10F is driven by the second transmission motor 10E connected to the trunnion shaft 10F of the feed chain hydraulic continuously variable transmission 10. The rotation of the output shaft 10B of the feed chain hydraulic continuously variable transmission 10 is stopped by rotating to a neutral position. As a result, the driving force to the feed chain 12B is interrupted, and the rotation of the feed chain 12B stops.
When it is determined that the stop switch 6D has been input, the engine 62 is stopped to stop the rotation transmitted to the traveling hydraulic continuously variable transmission 66, and the traveling device 2 and the reaping device 4 are provided. The rotation of the transport device 34 is stopped.

  In order to stop the feed chain 12B in an emergency, the second speed change motor 10E sets a reduction ratio or the like larger than that of the first speed change motor 10C used in the first stop method, and the first speed change motor 10C moves the trunnion shaft 10F. The trunnion shaft 10F can be rotated at a higher speed than when rotating. In addition, in order to stop the feed chain 12B more quickly, the trunnion shaft 10F is rotated until it slightly exceeds the neutral position to the reverse rotation position, and the rotation of the output shaft 10B is stopped by the rotation sensor 68G. It is preferable to rotate the trunnion shaft 10F from the reverse rotation side position to the neutral position after the rotation of the output shaft 10B is detected again or after 1 to 2 seconds have elapsed.

  In order to remove cereals and the like clogged between the feed chain 12B and the pinch 12C, the rotation direction of the feed chain 12B can be switched by operating the reverse switch 6C. In this case, in order to prevent inadvertent reverse rotation of the feed chain 12B and increase the safety of the auxiliary worker, the feed chain 12B is driven to rotate reversely only when the reverse rotation switch 6C is operated. In order to ensure the time to leave the combine, in order to drive the feed chain 12B in the reverse direction after the reverse switch 6C has been operated for 1 to 2 seconds or to notify the surrounding collaborators of the reverse state of the feed chain 12B, It is preferable to sound the horn when the feed chain 12B is reversed.

  Further, after the stop switch 6D is operated and the feed chain 12B, the engine 62, etc. are stopped, in order to start the engine 62 again, it is necessary to release the mode switch 6B and switch to the normal mowing and threshing mode.

<Semi-opening method of top cover>
Next, a method for setting the upper cover 50D of the present embodiment to a half-open state will be described.
The operation state of the stop switch 6D is illustrated in the first stage from the upper side of FIG. 25, and the first motor 54 that drives the first hook 50G that locks and maintains the upper cover 50D in the second stage is illustrated in the second stage. The driving state is illustrated, the locked state of the first hook 50G is illustrated in the third stage, and the locked state of the second hook 50H formed longer than the entire length of the first hook 50G is illustrated in the fourth stage. Yes. The locked state means a state in which the first and second hooks 50G and 50H are engaged with the pin 50K.

  First, the control device 85 determines whether there is an input from the stop switch 6D. If it is determined that there is no input from the stop switch 6D, the control device 85 maintains the first motor 54 stopped.

On the other hand, if it is determined that the stop switch 6D has been input, the first motor 54 is driven for a predetermined time to move the first hook 50G from the locked state to the released state. As a result, the first hook 50G and the pin 50K are disengaged, and the upper cover 50D moves upward by the upward biasing means.
When the upper cover 50D moves upward by a predetermined height, the second hook 50H formed longer than the first hook 50G engages with the pin 50K, and the upward movement of the upper cover 50D stops and the upper cover 50D. The holding rod 12A side is in a semi-open state.
The locked state of the second hook 50H can be released by operating the opening / closing lever 50E.

<How to stop the barrel>
Next, a method for stopping the handling cylinder 55 of the handling chamber 50 according to this embodiment will be described.
26, the operation state of the stop switch 6D is illustrated in the first stage from the upper side, the driving condition of the engine 62 is illustrated in the second stage, and the engine shaft 62A of the handling cylinder 55 is illustrated in the third stage. The driving situation of the second motor 74A for operating the handling cylinder clutch 75 to connect the transmission of the rotation of the cylinder is illustrated, the connected state of the handling cylinder clutch 75 is illustrated in the fourth stage, and the handling cylinder 55 is illustrated in the fifth stage. The driving situation of the third motor 75A for operating the handling cylinder brake 75 for urgently stopping the handling cylinder shaft 55A is shown, and the connection state of the handling cylinder brake 75 is shown in the sixth stage.

  First, the control device 85 determines whether or not there is an input from the stop switch 6D. If it is determined that there is no input from the stop switch 6D, the control device 85 maintains the drive (rotation) of the engine 62, and the second motor 74A and the second motor 74A. 3 The motor 75A is not driven.

  On the other hand, when it is determined that the stop switch 6D has been input, the driving of the engine 62 is stopped and the second motor 74A is driven to operate the barrel clutch 74 from the connected state to the disconnected state. As a result, the connection between the countershafts 71 and 72, the pulleys 71C and 72A, etc. provided on the downstream side of the transmission with respect to the engine 62 and the upstream side of the transmission with respect to the handling shaft 55A is released from the handling shaft 55A. Even after the engine 62 is stopped, the rotation of the countershafts 71 and 72 and the pulleys 71C and 72A rotating by inertia can be blocked from acting on the cylinder shaft 55A.

  Next, the third motor 75A is driven to operate the handling cylinder brake 75 from the disconnected state to the connected state. Accordingly, it is possible to urgently stop the rotation of the handling cylinder shaft 55A by applying a load to the handling cylinder shaft 55A that is rotating by inertia even after the engine 62 is stopped. In the present embodiment, the second motor 74A and the third motor 75A are transmitted to the stop switch 6D and driven simultaneously, but the second motor 74A is driven to connect the cylinder clutch 74 from the connected state. It is also possible to operate the release state and drive the third motor 75A after a predetermined time has elapsed to change the handling cylinder brake 75 from the connection release state to the connection state.

<How to operate the engine, feed chain, cylinder and upper cover>
Next, an operation method of the engine 62, the feed chain 12B, the handling cylinder 55, and the upper cover 50D of the handling chamber 50 when the emergency stop stop switch 6D is operated will be described.

(Operation method for handling work)
FIG. 27 illustrates a method of operating the engine 62, the feed chain 12B, the handling cylinder 55, and the upper cover 50D when the emergency stop stop switch 6D is operated during a handling operation (non-regulated state). Yes.

  First, in step S1, the control device 85 determines whether or not there is an input of the stop switch 6D. If it is determined that there is an input from the stop switch 6D, the process proceeds to step S2. If it is determined that there is no input from the stop switch 6D, the feed chain 12B and the like are driven by the above-described second drive method of the feed chain. To do.

In step S2, the control device 85 outputs a stop signal to the controller 62C on the engine 62 side in step S2A or rotates the engine key 62A in order to increase the safety of the work environment of the auxiliary worker. The supply of fuel to the engine 62 is stopped to stop the engine 62, and the second speed change motor 10E is driven in step S2B to turn the trunnion shaft 10F of the feed chain hydraulic continuously variable transmission 10 to the neutral position. Then, the drive of the feed chain 12B is stopped, and in step S2C, the second motor 74A is driven to release the connection of the handling cylinder clutch 74 and the rotation of the engine 62 transmitted to the handling cylinder shaft 55A is cut off.
Note that the operations in steps S2A to S2C may be performed in a different order, or may be performed simultaneously.

  Next, in step S3, the control device 85 performs discrete operations such as premature wear of the handling cylinder brake 75 due to a malfunction caused by the failure of the mode switch 6B or the switch 38C, or waste due to opening of the upper cover 50D. In order to prevent this, the driving state of the reaping device 4 is determined in step S3A, the driving state of the traveling device 2 is determined in step S3B, and the stepping-in pedal 22 is depressed in step S3C.

In step S3A, in order to determine the driving state of the reaping device 4, it is determined whether or not the input value of the transport speed sensor 34S that detects the speed VH of the transport device 34 of the reaping device 4 is within a predetermined range.
When the transport device 34 stops and the input value from the transport speed sensor 34S is 0 m / sec, the reaping device 4 determines that it is stopped, and proceeds to step S3B, where the input value from the transport speed sensor 34S is 0 m / sec. If it is not sec, the reaping device 4 determines that it is being driven and returns to step S2.

In step S3B, in order to determine the driving state of the traveling device 2, it is determined whether or not the input value of the traveling speed sensor 66S that detects the speed V of the traveling device 2 is within a predetermined range.
When the speed V of the traveling device 2 is 0.3 m / sec or less and the input value from the traveling speed sensor 66S is 0.3 m / sec or less, it is determined that the driving state of the traveling device 2 is low speed and stopped. In step S3C, if the input value from the traveling speed sensor 66S is larger than 0.3 m / sec, it is determined that the driving state of the traveling apparatus 2 is high speed, and the process returns to step S2.

In step S3C, in order to determine the depression state of the depression pedal 22, it is determined whether or not the input value of the depression pedal sensor 22S that detects the depression state of the depression pedal 22 is within a predetermined range.
If it is determined that the brake pedal 22 is depressed and the side clutch 65I is disconnected and the input value of the brake pedal sensor 22S is 0, the process proceeds to step S4, where the input value of the brake pedal sensor 22S is 0. If not, it is determined that the take-in pedal 22 is not depressed, and the process returns to step S2.
Note that the operations of steps S3A to S3C may be performed in a different order, or may be performed simultaneously.

  In step S <b> 4, the control device 85 drives the third motor 75 </ b> A to brake the handling cylinder shaft 55 </ b> A with the handling cylinder brake 75 in order to quickly stop the rotation of the handling cylinder 55.

Next, in step S5, the control device 85 drives the first motor 54 to release the engagement between the first hook 50G and the pin 50K in order to remove the foreign matter and the like sandwiched between the threshing portion transport device 12. The upper cover 50D is half opened by engaging the second hook 50H and the pin 50K.
In the present embodiment, after the first motor 54 is driven to disengage the first hook 50G and the pin 50K and the upper cover 50D is half-opened, the open / close lever 50E is manually operated. The upper cover 50D is fully opened by releasing the second hook 50H and the pin 50K, but the first motor 54 is driven to disengage the first hook 50G and the second hook 50H from the pin 50K. The upper cover 50D can be fully opened.

  Next, in step S6, the control device 85 determines the stop state of the engine 62 in step S6A in order to quickly remove the foreign matter and the like caught in the threshing portion transport device 12 by manually rotating the handling cylinder 55. In step S6B, the stop state of the handling cylinder shaft 55A is determined. In step S6C, the open / close state of the upper cover 50D of the handling chamber 50 is determined. In step S6D, the connection state of the reaping clutch 65F and the threshing clutch 90A is determined.

In step S6A, in order to determine the stop state of the engine 62, it is determined whether or not the input value of the fuel supply sensor 62B mounted on the engine 62 that supplies fuel into the engine 62 is within a predetermined range.
When the fuel supply to the engine 62 is not performed and the input value from the fuel supply sensor 62B is 0, it is determined that the engine 62 is stopped, the process proceeds to step S6B, and the input value from the fuel supply sensor 62B. If is not 0, it is determined that the engine 62 is being driven, and the process returns to step S4.

In step S6B, in order to determine the stop state of the handling cylinder shaft 55A, it is determined whether or not the input value of the handling cylinder shaft rotation sensor 55S that detects the rotation speed of the handling cylinder shaft 55A is within a predetermined range.
When the input value from the cylinder barrel rotation sensor 55S is 0 rpm, it is determined that the cylinder axis 55A is stopped, and the process proceeds to step S6C. When the input value from the cylinder barrel rotation sensor 55S is not 0 rpm, Then, it is determined that the barrel 55A is rotating, and the process returns to step S4.

In step S6C, in order to determine the open / close state of the upper cover 50D of the handling chamber 50, it is determined whether or not the input value of the hook rotation sensor 50S attached to the shaft 50F is within a predetermined range.
If the input value of the hook rotation sensor 50S is equal to or greater than a predetermined value (approximately 30 degrees), it is determined that the upper cover 50D is in a half-open state, and the process proceeds to step S6D, where the input value of the hook rotation sensor 50S is predetermined. If it is less than or equal to the value, it is determined that the upper cover 50D is closed, and the process returns to step S4.

In step S6D, in order to determine the connection state between the reaping clutch 65F and the threshing clutch 90A, the input value of the rake pedal sensor 22S of the rake pedal 22 that drives the reaping clutch 65F and the operation seat 6 that drives the threshing clutch 90A. It is determined whether the input value of the threshing switch 6E is within a predetermined range.
When the input values of the take-in pedal sensor 22S and the threshing switch 6E are 0, it is determined that the connection between the mowing clutch 65F and the threshing clutch 90A has been released, and the process proceeds to step S7, where the take-in pedal sensor 22S and the threshing switch 6E. If the input value is not 0, it is determined that the mowing clutch 65F and the threshing clutch 90A are being connected, and the process returns to step S4.
Note that the operations of steps S6A to S6D may be performed in a different order, or may be performed simultaneously.
In step S6A, determination of the stop state of the engine 62 can also be made based on the number of revolutions of the output shaft of the engine 62. That is, it may be determined that the engine 62 is stopped when the rotation speed of the output shaft of the engine 62 is 0 rpm. Further, in step S6C, the open / closed state of the upper cover 50D can be determined based on the rotation angle around the pin 101 of the upper cover 50D.

  In step S7, the control device 85 manually rotates the handling cylinder 55 to drive the third motor 75A in the reverse direction in order to quickly remove foreign matter and the like sandwiched between the threshing section conveying device 12, and the handling cylinder brake. The operation of the brake to the cylinder shaft 55A by 75 is released.

(Operation method during normal mowing and threshing)
FIG. 28 illustrates a method of operating the engine 62, the feed chain 12B, the handling cylinder 55, and the upper cover 50D when the emergency stop stop switch 6D is operated during normal mowing and threshing work (regulated state). Yes.

  First, in step S10, the control device 85 determines whether or not there is an input of the stop switch 6D. If it is determined that there is an input from the stop switch 6D, the process proceeds to step S11. If it is determined that there is no input from the stop switch 6D, the feed chain 12B is driven by the feed chain first driving method described above. .

  In step S11, the control device 85 rotates the engine key 62A in step S11A to supply fuel to the engine 62, etc., in order to prevent damage to peripheral equipment due to intrusion of foreign matter into the threshing section transport device 12. The engine 62 is stopped and the engine 62 is stopped. In step S11B, the first speed change motor 10C is driven to turn the trunnion shaft 10F of the feed chain hydraulic continuously variable transmission 10 to the neutral position to drive the feed chain 12B. Stop. Note that the operations in steps S11A and 11B may be performed in a different order, or may be performed simultaneously.

  Next, at step S12A, the control device 85 at step S12A prevents inadvertent operation of the emergency stop stop switch 6D at the time of normal mowing and threshing work, or the disengagement due to opening of the upper cover 50D. The driving state of the reaping device 4 is determined, the driving state of the traveling device 2 is determined in step S12B, the driving state of the threshing device 3 is determined in step S12C, and the grain stored in the glen tank 5 is discharged in step S12D. Determine the state.

In step S12A, in order to determine the driving state of the reaping device 4, the input value of the transport speed sensor 34S that detects the speed VH of the transport device 34 of the reaping device 4 and the rotational position of the post-cutting frame 28 in the vertical direction are detected. It is determined whether or not the input value of the cutting position sensor 36S to be within a predetermined range.
The conveyance device 34 is stopped, the input value from the conveyance speed sensor 34S is 0 m / sec, the post-cutting frame 28 moves above a predetermined retraction position, and the input value from the cutting position sensor 36S is larger than the predetermined value. In this case, it is determined that the reaping device 4 is stopped, and the process proceeds to step S12B. If the input value from the conveyance speed sensor 34S is not 0 m / sec, it is determined that the reaping device 4 is being driven and the process proceeds to step S11. Return.

In step S12B, in order to determine the driving state of the traveling device 2, the input value of the traveling speed sensor 66S that detects the speed V of the traveling device 2 and the auxiliary transmission lever position sensor 15S that detects the position of the auxiliary transmission lever 15 are detected. It is determined whether or not the input value is within a predetermined range.
When the speed V of the traveling device 2 is 0.3 m / sec or less and the input value from the traveling speed sensor 66S is 0.3 m / sec or less, or when the traveling device 2 is moving backward and the input from the traveling speed sensor 66S When the value is 0 m / sec or less indicating reverse travel, or when the auxiliary transmission lever 15 is at the low speed and neutral position and the input value from the auxiliary transmission lever position sensor 15S indicates the low speed and neutral position, the traveling device 2 It is determined that the driving state of the traveling device 2 is low speed and stopped, and the process proceeds to step S12C. If the input value from the traveling speed sensor 66S is greater than 0.3 m / sec, it is determined that the driving state of the traveling device 2 is high speed. Return to step S11.

In step S12C, in order to determine the driving state of the threshing device 3, the input value of the layer thickness sensor 52S that detects the transfer amount of the grain and the like on the swing sorting device 52 and the grain that is conveyed on the feed chain 12B It is determined whether or not the input value of the cereal sensor 34C for detecting the presence or absence of cocoons is within a predetermined range.
When there is no grain to be transferred onto the rocking sorter 52 and the input value from the layer thickness sensor 52S is 0 mm, or there is no grain to be conveyed onto the feed chain 12B and the input value from the grain sensor 34C is If it is 0, it is determined that the threshing device 3 is stopped, and the process proceeds to step S12D. If the input value from the layer thickness sensor 52S is greater than 0 mm, it is determined that the threshing device 3 is being driven, and step Return to S11.

In step S12D, in order to determine the discharge state of the grains stored in the Glen tank 5, the input value of the discharge spiral sensor 39S for detecting the rotational speed of the discharge spiral 39A provided at the lower part of the Glen tank 5, and the discharge It is determined whether or not the input value of the discharge cylinder sensor 7S for detecting the protruding state of the cylinder 7 is within a predetermined range.
When the discharge spiral 39A is rotated at a predetermined rotational speed and the input value from the cereal sensor 34C is equal to or higher than the predetermined rotational speed, or when the discharge cylinder 7 is rotated in the left-right direction from the storage position, the input from the discharge cylinder sensor 7S When the value is equal to or larger than the predetermined angle, it is determined that the grain tank 5 and the discharge cylinder 7 are discharging the grain, and the process proceeds to step S13, and the input value from the culm sensor 34C is 0 rpm. Therefore, it is determined that the Glen tank 5 and the discharge cylinder 7 are stopped, and the process returns to Step S11.
Note that the operations in steps S12A to S12D may be performed in a different order, or may be performed simultaneously.

  In step S13, the control device 85 drives the second motor 74A to release the connection of the handling cylinder clutch 74 and rotate the engine 62 transmitted to the handling cylinder shaft 55A in order to increase the safety of the working environment. Shut off and proceed to step S14. In addition, although step S13 and step S14 are steps performed in order to stop rotation of the handling cylinder 55 rapidly, in order to improve durability of the handling brake 75, step S13 and step S14 are skipped and step. Subsequent to S12, step S15 may be performed.

  In step S14, the control device 85 drives the third motor 75A to brake the handling cylinder shaft 55A with the handling cylinder brake 75 in order to quickly stop the rotation of the handling cylinder 55, and proceeds to step S15.

  Next, in step S15, the control device 85 drives the first motor 54 to release the engagement between the first hook 50G and the pin 50K in order to remove the foreign matter and the like sandwiched between the threshing portion transport device 12. The upper cover 50D is half opened by engaging the second hook 50H and the pin 50K.

<Operating method of engine, feed chain, handling cylinder and upper cover when canceling emergency stop>
Next, an operation method of the engine 62, the feed chain 12B, the handling cylinder 55, and the upper cover 50D of the handling chamber 50 when the operation of the emergency stop stop switch 6D is released will be described.

  FIG. 29 shows the engine 62, the feed chain 12B, and the handling cylinder 55 when the operation of the stop switch 6D for emergency stop is released during a handling operation (non-regulated state) and a normal mowing and threshing operation (regulated state). And a method of operating the upper cover 50D.

First, in step S20, the control device 85 determines whether or not the emergency stop is released by re-input of the stop switch 6D. If it is determined that the stop switch 6D is re-input and the emergency stop is released, the process proceeds to step S21. If it is determined that the stop switch 6D is not re-input and the emergency stop is not released, The operation method etc. at the time of the hand-handling work that has been performed will be continued.
As the stop switch 6D, it is preferable to use an alternate operation type switch in order to maintain the emergency stop state by the first input until the second input is received. It is preferable to use a switch that requires different operations for the operation and the emergency stop release operation. For example, when the operating part of the stop switch 6D is pushed in, the pushing is maintained and an emergency stop state is established. If the switch of the mode to be released is employed, it is possible to prevent the emergency stop state from being inadvertently released.

  In step S21, the control device 85 manually pushes down the upper cover 50D and engages the first hook 50G and the pin 50K in order to prevent the disengagement and the like from being separated to the outside and to increase the safety of the work environment. Then, the process proceeds to step S22.

  In step S22, the control device 85 drives the third motor 75A to release the operation of the brake to the handling cylinder shaft 55A by the handling cylinder brake 75 in order to start the rotation of the handling cylinder 55 quickly, and step S23. Proceed to

  In step S23, the control device 85 drives the second motor 74A to connect the handling cylinder clutch 74 to transmit the rotation of the engine 62 to the handling shaft 55A of the handling cylinder 55, and proceeds to step S24.

  In step S24, the control device 85 drives the first speed change motor 10C or the second speed change motor 10E to drive the feed chain 12B quickly so that the trunnion shaft 10F of the feed chain hydraulic continuously variable transmission 10 is moved. After turning to a predetermined position, the process proceeds to step S25.

In step S <b> 24, the control device 85 rotates the engine key 62 </ b> A to resume the supply of fuel to the engine 62 and drive the engine 62.
Note that the operations of steps S23 to S25 may be performed in a different order or simultaneously.

  The present invention can be applied to agricultural work vehicles.

DESCRIPTION OF SYMBOLS 1 Airframe frame 2 Traveling device 3 Threshing device 4 Harvesting device 6B Mode switch 6C Reverse switch 6D Stop switch 10 Hydraulic continuously variable transmission for feed chain (hydraulic continuously variable transmission)
10A Input shaft 10C 1st transmission motor 10E 2nd transmission motor 10F Trunnion shaft 12B Feed chain 16 Main transmission lever 17A Drive sprocket
26B Handle 35B Feed chain rotating shaft 38 Handle lever 50 Handle chamber 50A Front wall 51 Sorting chamber 55 Handle cylinder 62 Engine 68 Gear box 68B Output shaft 68C Coupling 68D Drive shaft 71 Counter shaft 71C Pulley (first pulley) )
71D pulley (third pulley)
71E Pulley (second pulley)
80 Support member 85 Controller A First path B Second path VF Feed chain speed VH Conveying speed

Claims (12)

A traveling device (2) disposed below the body frame (1) on which the engine (62) is mounted, and a traveling device (2) disposed in front of the body frame (1) and synchronized with the traveling speed of the traveling device (2). A reaping device (4) to be driven, a threshing device (3) disposed behind the reaping device (4), and a handle formed on one side of the handling chamber (50) of the threshing device (3). A combine with a feed chain (12B) arranged along the mouth (26B),
In the peripheral part of the feed chain (12B), a cutting and threshing mode in which the conveying speed (VF) of the feed chain (12B) is changed in synchronization with the conveying speed (VH) of the cutting device (4), and the feed chain (12B) A mode switch (6B) for performing a switching operation with a handling mode for maintaining the transport speed (VF) at a predetermined transport speed;
During the mowing and threshing mode, the rotational speed of the engine (62) is set to a predetermined rated rotational speed,
During the handling mode, the engine (62) is rotated at a lower speed than the rated speed,
When the traveling speed of the traveling device (2) is high, the control automatically switches from the handling mode to the mowing and threshing mode to increase the rotational speed of the engine (62) to the rated rotational speed. The combine characterized by providing the apparatus (85).   When the main speed change lever (16) for operating the traveling speed of the traveling device (2) is located in the forward speed increasing region exceeding the neutral region, the hand handling mode is switched to the mowing and threshing mode, The combine according to claim 1, wherein the speed of the engine (62) is increased to a rated speed. At the rear of the reaping device (4), a base of a handle lever (38) extending toward the feed chain (12B) is rotatably supported,
During the handling mode, the handling lever (38) is rotated upward to increase the distance between the rear part of the handling lever (38) and the front part of the feed chain (12B),
In the cutting and threshing mode, the handle lever (38) rotates downward, and the interval between the rear portion of the handle lever (38) and the front portion of the feed chain (12B) is reduced.
A switch (38C) that contacts the handle lever (38) is provided;
The combine according to claim 1 or 2, wherein the switch (38C) is used as the mode switch (6B). A hydraulic continuously variable transmission (10) that continuously changes the rotation input from the engine (62) and outputs it to the feed chain (12B);
When a stop switch (6D) arranged at the periphery of the feed chain (12B) is operated, the engine (62) is automatically stopped and the output rotation of the hydraulic continuously variable transmission (10) is performed. The combine according to any one of claims 1 to 3, further comprising a control device (85) for automatically stopping the operation.   When the reversing switch (6C) arranged at the periphery of the feed chain (12B) is operated, the hydraulic pressure is controlled so that the feed chain (12B) is driven in the direction opposite to that during threshing work. The combine according to claim 4, wherein the continuously variable transmission (10) is configured to output in reverse. A first transmission motor (10C) that rotates the trunnion shaft (10F) of the hydraulic continuously variable transmission (10), and a trunnion shaft (10F) that rotates at a higher speed than the first transmission motor (10C). A second speed change motor (10E),
The combine according to claim 4 or 5, wherein when the mode is switched to the handling mode, the trunnion shaft (10F) is rotated by the second speed change motor (10E). The sorting unit (51) is provided below the handling room (50) of the threshing device (3),
A first path (A) for transmitting the rotation of the engine (62) to the threshing device (3) and the feed chain (12B), and a second path for transmitting the rotation of the engine (62) to the reaping device (4) ( B)
The configuration is such that the rotation of the counter shaft (71) arranged at a position upstream of the sorting section (51) in the first path (A) is input to the hydraulic continuously variable transmission (10). The combine according to any one of 6.   The counter shaft (71) has a first pulley (71C) for outputting the rotation of the counter shaft (71) to the cylinder (55) side of the handling chamber (50), and the rotation of the counter shaft (71). The second pulley (71E) that outputs to the sorting section (51) side, and the third pulley (71D) that outputs the rotation of the counter shaft (71) to the hydraulic continuously variable transmission (10) side. 7. Combine according to 7.   A support member (80) for supporting the counter shaft (71) is provided on the front wall (50A) of the threshing device (3), and the first pulley (71C) is supported in the axial direction of the counter shaft (71). The second pulley (71E) and the third pulley (71D) are arranged at a position biased to one side with respect to the member (80), and the first pulley (71C) is arranged with respect to the support member (80). The combine according to claim 8, which is disposed in a portion biased to the side opposite to the side. The counter shaft (71) is arranged in the left-right direction in front of the front wall (50A) of the threshing device (3), and the feed chain (12B) is rotated outward from the counter shaft (71). Provide a vertical feed chain rotation axis (35B) to support freely,
The combine according to any one of claims 7 to 9, wherein, in a side view, the hydraulic continuously variable transmission (10) is disposed at a position between the counter shaft (71) and the feed chain rotating shaft (35B). .   A drive shaft (68D) having a drive sprocket (17A) for driving the feed chain (12B) is a portion between the feed chain rotating shaft (35B) and the counter shaft (71) in the longitudinal direction of the machine body. The combine according to claim 10, wherein the combiner is arranged at a position between the input shaft (10A) and the counter shaft (71) of the hydraulic continuously variable transmission (10) in the vertical direction. The driving sprocket (17A) is connected to the tip of the output shaft (68B) of the gear box (68) to which driving force is input from the hydraulic continuously variable transmission (10), or the driving sprocket ( A coupling (68C) connected to the drive shaft (68D) supporting 17A),
When the feed chain (12B) is rotated toward the outer side of the machine body, the connection between the output shaft (68B) and the drive sprocket (17A) is released, or the output shaft (68B) and the drive are driven. The connection with the shaft (68D) is released,
When the feed chain (12B) is rotated inward of the machine body, the output shaft (68B) and the drive sprocket (17A) are connected, or the output shaft (68B) and the drive shaft The combine according to any one of claims 7 to 11, wherein (68D) is connected.

Images