JP2006325557A - Threshing device - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To improve separation performance by preventing simple grain loss at low-speed operation by controlling the speed change of a sub-separation fan so as to be changed to follow the speed of a car, and rapidly rotating the sub-separation fan at high-speed operation, and to improve the efficiency of an operation by allowing a feed chain and a waste-straw-conveyor to follow the speed of the car to improve delivering and conveying performance. <P>SOLUTION: The threshing device has a main winnower 21 for carrying out the force feed of separation air along a main separation air passage and the sub-separation fan 20 for carrying out the force feed of separation air along a sub-separation air passage. The sub-separation fan 20, the feed chain 12 for sending and feeding grain culms along the inside of the threshing chamber, and the waste straw-conveyor 16 for unloading the threshed waste straw are co-operated with each other so as to be regulated to change the speeds according to the speed of the car. <P>COPYRIGHT: (C)2007,JPO&INPIT

Description

  The present invention relates to a threshing apparatus used for a combine, a harvester, or the like, and belongs to the technical field of agricultural machinery.

Conventionally, as disclosed in Patent Document 1, a main Chinese tang that pumps the selected wind along the main sorting wind path and a sub tang that pumps the selected wind along the sub-selected wind path are provided to improve the sorting performance. Such a technique is known.
JP-A-5-153849

  This type of sub-selection fan is intended to perform appropriate selection according to the threshing state by changing the rotation ratio or the air volume ratio with the main hot pot. The object of the present invention is to control the speed of the sub-sorting fan according to the vehicle speed to prevent single grain loss during low-speed work, and to improve the sorting ability by rotating the sub-sorting fan at high speed during high-speed work. In addition, by following the vehicle speed of the feed chain and the waste straw conveying device, it is intended to improve takeover conveying performance and improve work efficiency.

  The present invention has taken the following technical means in order to solve the above-described problems. That is, the present invention according to claim 1 comprises a main tang (21) for pumping the selected wind along the main selected wind path, and a sub-selected fan (20) for pumping the selected wind along the sub-selected wind path. The sub-selection fan (20), the feed chain (12) for feeding and supplying cereals along the handling chamber, and the waste straw conveying device (16) for carrying out the waste straw after the threshing are changed according to the vehicle speed. It is characterized by being interlocked to be controlled.

  When the vehicle speed is increased, the sub-selection fan (20) is controlled to shift the rotation of the fan (20) to the high speed side according to the vehicle speed. Both the feed chain (12) and the waste straw conveying device (16) are also controlled to follow the vehicle speed.

  During low-speed work, the sub-sorting fan (20) is rotated at a low speed to reduce the third scattering of the grain. During high-speed work, the sub-sorting fan (20) is rotated at a high speed to increase the wind sorting ability by the sub-sorting wind. The sorting performance can be improved. Moreover, since both the feed chain (12) and the waste straw conveying device (16) follow the vehicle speed, there is no change in the relative speed between them, and the takeover conveying performance can be improved.

  The present invention according to claim 2 comprises a main tang (21) for pumping the sorting wind along the main sorting wind path and a sub-sorting fan (20) for pumping the sorting wind along the sub-sorting wind path, Sub-sorting fan (20), feed chain (12) for feeding cereals along the handling chamber, waste straw transporter (16) for carrying out the waste straw after threshing, and the main and sub-sorting The suction dust exhaust fan (24) disposed above the end side of the wind path is configured to be interlocked so as to control the shift according to the vehicle speed.

  In addition to following the vehicle speed of the feed chain (12) and the waste straw conveying device (16), the suction dust exhaust fan (24) also follows the vehicle speed, so when the processing amount on the swing sorting shelf is low during low-speed work, etc. Suppresses the dust-absorbing capacity, reduces single grain loss, and increases the dust-absorbing capacity and increases the throughput on the rocking sorting shelf by rotating the dust discharge fan (24) at high speed during high-speed work. It can cope and sorting performance improves.

  The present invention described in claim 3 includes a main tang (21) for pumping the sorting wind along the main sorting wind path and a sub-sorting fan (20) for pumping the sorting wind along the sub-sorting wind path, Sub-sorting fan (20), feed chain (12) for feeding cereals along the handling chamber, waste straw transporter (16) for carrying out the waste straw after threshing, and the main and sub-sorting The suction dust exhaust fan (24) disposed above the end side of the wind path is linked to control the shift according to the vehicle speed, and the feed chain (12) to the waste straw conveying device (16) and the suction dust exhaust fan. The power transmission mechanism to (24) is constructed so as to be housed and accommodated in one transmission case (50) disposed behind the terminal end of the feed chain.

  By storing the transmission mechanism from the feed chain (12) to the two systems of the waste straw conveying device (16) and the suction dust exhaust fan (24) in one case (50), it is possible to suppress the cost increase of the transmission configuration. In addition, since the transmission case (50) is disposed below the terminal end of the feed chain (12) and behind the feed chain (12), the transfer of the discharge wall from the feed chain to the discharge wall transfer device can be carried out smoothly without any problem. The feed chain can be easily opened and closed without hindrance.

  In short, according to the first aspect of the present invention, since the sub-selection fan (20) is controlled to follow the vehicle speed, the sub-selection fan (20) is rotated at a low speed during the low-speed operation. The number separation is reduced, and at the time of high-speed work, the high-speed rotation of the sub-sorting fan can increase the wind sorting ability by the sub-sorting wind and improve the sorting performance. In addition, since both the feed chain (12) and the waste straw transporter (16) follow the vehicle speed, there is no change in the relative speed between them, the take-up posture of the waste straw is stabilized, and the take-up transport performance can be improved.

  Further, according to the second aspect of the present invention, the suction dust exhaust fan (24) follows the vehicle speed while exhibiting the effect of the first aspect of the invention. When the amount is small, the rotation of the dust discharge fan (24) can be lowered to suppress the dust absorption capability, and the single grain loss can be reduced. In addition, by rotating the dust discharge fan at high speed during high-speed work, it is possible to increase the dust-absorbing capacity and cope with an increase in the processing amount of the swing sorting shelf, and the sorting performance is greatly improved.

  Furthermore, according to the third aspect of the present invention, while having the effects of the first and second aspects, the feeder chain (12) to the waste straw conveying device (16) and the suction dust fan (24). By placing the transmission mechanism for the two systems branching into a single case in one case, the cost increase of the transmission configuration can be suppressed, and this transmission case (50) is arranged behind the feed chain (12). By doing so, it is possible to smoothly carry out the takeover of the discharge wall from the feed chain to the discharge wall conveying device without any trouble, and to easily open and close the feed chain without any trouble.

Embodiments of the present invention will be specifically described below with reference to the drawings.
First, the structure of the combine shown in FIG. 1 will be described.
On the vehicle body 2 having the traveling crawler 1, a reaping portion 3 that can be raised and lowered is mounted on the front, and a threshing device (threshing machine) 4 is mounted on the rear. A driving unit 5 is installed on the lateral side of the mowing unit 3 and a Glen tank G is equipped behind it. A shift lever 6 is configured to drive an HST (hydraulic continuously variable transmission) by operation in the front-rear direction and to control the forward / reverse shift control via the transmission device in the mission case 7. The rotational power of the engine E is transmitted from the engine output pulley to the HST input shaft via the belt 17 and from the HST output shaft to the mission input shaft 18. Power is transmitted from the mission output shaft 19 to the cutting unit 3 via the cutting transmission belt 3a and the cutting input pulley 3b.

  Next, the configuration of the threshing device 4 will be described. A receiving net 10 is stretched along the lower half of the handling chamber 9 in which the handling cylinder 8 is pivotally mounted. A handle cylinder cover 11 covers the upper part of the handling chamber 9 and is configured to be swingable around an axis parallel to the axis of the handle cylinder.

  A feed chain 12 for sandwiching and transporting cereal grains and a sandwiching rail 12a provided on the upper side are disposed on the handling port side of the handling chamber 9. This clamping rail 11a is mounted on the side of the barrel cover 11 and swings and opens together with the cover. On the side opposite to the feed chain 12 side of the handling chamber 9, a second processing chamber in which a second processing cylinder 13 is pivoted is provided in parallel. In addition, a dust removal treatment chamber having a dust removal treatment cylinder 14 mounted on the same axis as the interior is provided behind the second treatment cylinder 13. The waste straw that has been threshed in the handling chamber is taken over from the terminal end of the feed chain 12 to the waste straw transporting device 16, and is then carried out to the rear and guided to the rear waste straw cutter C.

  A swing sorting device Y installed swingably is provided below the handling chamber 9 and below the dust sorting chamber, and further below the sub-sorting fan 20 and the main hot pot, in order from the upper side of the sorting direction. 21, No. 1 transfer spiral 22, No. 2 transfer spiral 23, and a suction and dust discharge fan 24 are provided on the upper side to constitute a sorting chamber. The first cerealing device 15A lifts the grains collected by the first transfer spiral 22 and stores them in the Glen tank G. The second cerealing device 15 </ b> B is configured to return the second processed material collected by the second transfer spiral 23 into the second processing cylinder 13.

  The swing sorting device Y is configured to receive the processed product after the threshing process from the handling room, that is, to sort the sieve while swinging and transferring the processed material. The sub-fan 27, the straw rack 28, and the chaff shib 27, and the gluing 29 is disposed under the chaff sheave 27 and provided integrally therewith. 24 is configured to receive the processed material leaked from the handling chamber 9 by the combined action of the sorting wind and the swinging by 24, and perform the sieve sorting process while swinging and transferring.

  The sub-selection fan 20 is transmitted with power from the transmission output shaft 19 via the synchro transmission belt 30 and the one-way clutch 31, and is shifted in accordance with the vehicle speed. Further, the sub-selection fan 20 is linked to a chain drive sprocket 33 so as to rotationally drive the feed chain 12 via a reduction gear transmission mechanism 32. Further, the feed chain 12 is configured to be interlocked so as to rotationally drive the waste straw conveying device 16 and the suction dust fan 24 via an appropriate transmission mechanism.

  That is, from the feed chain 12 to the exhaust wall transporting device 16, an exhaust wall drive transmission chain 36, an exhaust wall output shaft 37, an exhaust wall drive sprocket 35 provided on the exhaust wall / dust drive sprocket shaft 34 at the end of the feed chain 12, The belt transmission mechanism 38, the bevel gear mechanism 39, and the chain transmission mechanism 40 are coupled to transmit to the exhaust wall input shaft 41. From the feed chain 12 to the suction dust exhaust fan 24, the dust transmission drive gear 42 is connected to the gear transmission mechanism 43. The dust fan input shaft 45 is driven to rotate through the dust fan sync output shaft 46, the dust fan sync output pulley 47, and the dust fan transmission belt 44.

  Then, a transmission mechanism that is branched from the feed chain 12 to the exhaust wall conveying device 16 and the suction dust fan 24, that is, a transmission of the exhaust wall drive sprocket 35, the exhaust wall transmission chain 36, etc. to the exhaust wall conveying device 16 is transmitted. The mechanism and the transmission mechanism such as the dust drive gear 42 and the gear transmission mechanism 43 to the suction dust fan 24 are housed in one transmission case 50. Further, the transmission case 50 is configured to be thinned by being interposed in the space between the casing 24 a of the suction dust fan 24 and the feed chain 12. As a result, the overhang of the transmission case 50 to the outside of the machine frame can be suppressed, the width of the transmission case itself can be reduced, and the strength of the casing portion of the suction dust fan can be increased.

  The transmission to the suction dust exhaust fan 24 can be input from both the sub-selection fan 20 and the vehicle speed tracking system transmission path from the feed chain 12 and the constant speed transmission path from the engine E and the main tang 21. By configuring the suction dust exhaust fan 24 to rotate via the faster transmission path via the one-way clutch 51, the dust exhaust fan can be driven at a constant speed by a constant speed transmission path during low speed work. It eliminates problems such as poor sorting due to reduced dust-absorbing capacity and clogging due to poor exhaust from the swinging sorting shelf, and two transmission paths: vehicle speed tracking (synchronized) transmission and constant speed transmission. Therefore, even if a failure occurs on one side, it can be carried out without interruption. The one-way clutch 51 is interposed between a synchro input pulley 48a and a constant speed input pulley 48b provided on the dust discharge fan input shaft 45.

  The synchro output pulley 47 to the dust exhaust fan is a split pulley whose rotation diameter can be changed, and the synchro transmission speed (rotation speed) to the suction dust exhaust fan can be adjusted. The number of rotations of the dust exhaust fan with respect to the vehicle speed can be arbitrarily adjusted in accordance with the difference in cutting conditions such as the variety and wet materials.

  A clutch mechanism 52 for interrupting the vehicle speed tracking transmission is provided in the vehicle speed tracking transmission path to the suction dust exhaust fan 24, and can be switched to a constant speed transmission by cutting off the vehicle speed tracking transmission. For example, during high-speed work, if single grain loss occurs frequently under conditions such as a low scrap generation rate and a small amount of processing on the swing sorting shelf, cut the vehicle speed tracking transmission and switch to constant speed transmission, The above problems can be solved. The clutch mechanism 52 can be made compact by being housed in the transmission case 50.

  The on / off switching means of the clutch mechanism 52 is configured by the motor M, interlocked with the wire 53 and the like, and can be switched by a changeover switch 54 provided near the driver's seat 5a of the driving unit 5.

  The constant speed transmission path is configured by a constant speed transmission belt 57 that spans between the main rotary shaft 21a, the first transfer spiral shaft 22a, the second transfer spiral shaft 23a, the swing crank shaft 55, and the counter shaft 56. Further, the suction dust fan 24 is kept constant by rotating a constant speed dust belt 58 between the constant speed input pulley 48 b from the dust fan constant speed output pulley 49 of the counter shaft 56 to the suction dust fan 24. It is configured to rotate at a high speed.

  Both the synchro output pulley 47 and the constant speed output pulley 49 for the suction dust exhaust fan are provided in front of the axis of the suction dust exhaust fan 24, and the sync output pulley 47 is located above the constant speed output pulley 49. It is installed. By arranging the transmission to the suction dust exhaust fan 24 from the front to the rear for both the constant speed transmission path and the synchro transmission path, the suction dust exhaust fan can be easily arranged on the terminal side of the threshing part. The transmission path does not overlap the cutter part. By setting the synchronized transmission above the constant speed transmission, the transmission path can be easily arranged without crossing.

The counter shaft 56 is driven by the cutter transmission belt 59 from the waste straw cutter C.
In the structure in which the transmission to the suction dust fan 24 is constituted by a synchro transmission system and a constant speed transmission system, both transmission systems are configured to be transmitted to the suction dust fan 24 by belts 44, 57 and 58, respectively. By enabling slipping when the exhaust fan is clogged, it is possible to prevent problems such as damage to the transmission case.

  A counter case 60 on which the swing crankshaft 55, the countershaft 56, and the like are installed is connected to the transmission case 50, and is also connected to the drive gear case 61 of the feed chain 12 via a reinforcing rod 62. The case and counter case mounting rigidity is increased and the strength is improved. In addition, since the counter case is also connected to the feed chain drive gear case 61, the strength is further improved. The feed chain 12 is configured to be capable of swinging in and out in the inward and outward directions with an up-and-down opening and closing fulcrum shaft 63 installed on the start end side as a fulcrum. When the feed chain is open, the transmission to the feed chain 12 and the waste blower transfer device 16 is cut off, and the synchro transmission to the suction dust exhaust fan 24 is cut off. At this time, the suction dust exhaust fan is driven from the constant speed transmission path. By making it possible, even when the feed chin is opened, the sub-sorting fan 20, the main hot pot 21, and the suction dusting fan 24 are driven to rotate and blown air. Easily remove grains and bran waste.

  The transmission to the sub-selection fan is driven from the upper side of the feed chain, so that the sub-selection fan 20, the main tang 21 and the suction dust fan 24 can be driven even when the feed chain is open.

  In the structure in which the transmission to the suction dust exhaust fan can be switched between vehicle speed tracking and constant speed, detection of the grain sensor 65 that detects the presence or absence of the grain basket installed in the cutting unit 3 It is configured to operate in conjunction with the result, and is configured to switch to constant speed transmission by turning off the clutch mechanism 52 in the case and cutting off the synchro transmission at the time of non-grain transport. According to this, when shifting from the cutting state to the non-cutting state, the amount of processing in the handling chamber decreases, and the increase in the third loss can be prevented by reducing the engine load and increasing the rotation. it can. In addition, since the rotation of the suction dust exhaust fan rotates at a constant speed, the sorting does not deteriorate, and when the rotation rises again, the processed material is not blown out at the third loss.

  In the configuration in which the synchro transmission is cut off in conjunction with the grain culm sensor 65 of the reaping unit, the synchro transmission is cut off after a lapse of a certain period of time after the culm sensor 65 is turned off (after the absence of the chopped grain cocoon is detected) and switched to a constant speed transmission. If the control is carried out in this way, if the rotational speed of the suction dust exhaust fan is reduced at the same time as there is no conveying cereal, the processed material in the handling chamber is still full, which increases the amount of processed material and reduces wind sorting. On the contrary, there is a risk that the loss increases or the sorting becomes worse, but by providing a time difference as described above, the rotation can be lowered according to the decrease in the processed matter in the threshing part, and the wind sorting is effective. It is possible to reduce the third loss.

  Further, in the above-described configuration, when the cutting operation is restored (the culm sensor ON), the dust sorting can be performed effectively in a timely manner by quickly returning the rotation speed of the suction dust collecting fan to the synchro transmission.

  The feed chain drive gear case 61 is provided with a feed chain stop mechanism 69 including a cam clutch 67 and a stop pin 68. When the feed chain is stopped, the waste chain conveying device 16 is stopped in conjunction with this, and the feed chain 12 is also stopped. By disconnecting the synchro transmission from the suction dust exhaust fan 24, the suction dust exhaust fan 24 is driven at a constant speed. By interlocking with the feed chain stop, the rotational speed of the suction and dust discharge fan can be made constant at the time of turning of the airframe, so that the third loss at the time of turning can be reduced. The feed chain stop mechanism 69 may be configured to operate in conjunction with the lifting operation of the cutting unit during turning.

  The mowing clutch and the transmission to the feed chain are linked, and during the harvesting operation, the feed chain 12, the waste straw conveying device 16, and the suction dust fan 24 are synchronized from the sub-selection fan 20 to the threshing operation (handling). In this case, the auxiliary sorting fan 20, the feed chain 12, the waste straw conveying device 16, and the suction dust fan 24 are transmitted from the engine at a constant speed via the constant speed transmission clutch belt 70.

  That is, as shown in FIG. 14, the tension clutch 30a of the synchro transmission belt 30 is disengaged via the synchro transmission clutch rod 73 by operating the mowing / declutching lever 72 to the “threshing” (hand-handling) work position. At the same time, when the tension clutch 71 of the constant speed transmission clutch belt 70 is put into the clutch through the constant speed transmission clutch wire 74, the main sorting fan 21 to the sub-selection fan 20, the feed chain 12, the waste straw conveying device 16, and the suction dust fan. 24 is transmitted at a constant speed. In addition, when the cutting clutch release lever 72 is moved to the “cutting” work position, the tension clutch 71 of the constant speed transmission clutch belt 70 is disengaged and the tension clutch 30a of the synchro transmission belt 30 is engaged. Synchro-transmission is performed from 20 through the feed chain 12, the waste straw conveying device 16, and the suction dust exhaust fan 24.

  In the embodiment shown in FIG. 15, the transmission from the mission to the sub-sorting fan 20 can be switched between high speed and standard, and also to the feed chain 12 on the lower transmission side, the waste straw transporting device 16 and the suction dust fan 24. It is configured to be able to shift in conjunction. A high speed side synchro transmission belt 30H and a standard side synchro transmission belt 30S having different speed ratios are provided between the mission output shaft 19 and the fan shaft 20a of the sub-selection fan 20, and the high speed side or The speed can be switched to the standard side, the selected air volume can be enlarged or reduced, the feed chain speed can be changed, and the amount of straw waste generated in the handling chamber can be adjusted.

Combine side view Top view of the combine Side view of threshing device Cutting side view of essential parts of threshing device Side view of the main part Front view of the main part Deployment transmission path diagram of each part of the combine Relationship graph between synchronized transmission and constant speed transmission Top view of the main part of the combine Top view of the threshing selection section Front view of combine main section Cut front view of the main part Cut back view of the main part Side view of some of the above Transmission route diagram of a part of the combine

Explanation of symbols

E engine HST hydraulic continuously variable transmission 6 shift lever) 12 feed chain 16 waste blower transfer device 20 sub-selection fan 21 main tang 24 24 suction dust fan 36 waste wall transmission chain 42 dust drive gear 43 gear transmission mechanism 50 transmission case

Claims (3)

  A main sorting box (21) that pumps the sorting wind along the main sorting wind path; and a sub sorting fan (20) that pumps the sorting wind along the sub sorting wind path, the sub sorting fan (20) and the handling chamber The feed chain (12) for feeding and supplying the cereal meal along with the waste straw conveying device (16) for carrying out the waste straw after carrying out the threshing is interlocked to control the shift according to the vehicle speed. Threshing device.   A main sorting box (21) for pumping the sorting wind along the main sorting wind path, and a sub sorting fan (20) for feeding the sorting wind along the sub sorting wind path, the sub sorting fan (20), A feed chain (12) for feeding and supplying cereals along the room, a waste straw conveying device (16) for carrying out the waste straw after threshing, and an upper end side of the main and sub-selection wind paths. A threshing apparatus, wherein the suction and dust exhaust fan (24) is interlocked so as to be controlled in accordance with the vehicle speed.   A main sorting box (21) for pumping the sorting wind along the main sorting wind path, and a sub sorting fan (20) for feeding the sorting wind along the sub sorting wind path, the sub sorting fan (20), A feed chain (12) for feeding and supplying cereals along the room, a waste straw conveying device (16) for carrying out the waste straw after threshing, and an upper end side of the main and sub-selection wind paths. The suction and dust exhaust fan (24) is linked to control the speed change according to the vehicle speed, and the power transmission mechanism from the feed chain (12) to the waste straw transporter (16) and the suction dust exhaust fan (24) is The threshing device is constructed so as to be housed and accommodated in one transmission case (50) disposed behind the terminal end of the feed chain.

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