JP5393208B2 - Combine - Google Patents

Description

  The present invention relates to a combine.

  Even when the driving force is supplied from the prime mover unit to the sorting unit and an auxiliary prime mover unit is provided to assist the prime mover unit, the driving force supplied to the sorting unit is fluctuated due to fluctuations in the driving force from the prime mover unit. A combine that allows a predetermined driving force to be constantly supplied to the sorting unit by the auxiliary motor unit is known as a conventional technique (see, for example, Patent Document 1).

JP 2005-245260 A

  However, since the conventional technology such as Patent Document 1 supplies driving force from the prime mover unit to the threshing unit, the load on the threshing unit greatly fluctuates due to the wetness of the threshing grains to be threshed. When the driving force supplied to the threshing unit fluctuates due to fluctuations in the driving force, the rotation speed of the barrel in the threshing unit cannot be set to an optimum value and the threshing performance is lowered, and thus the threshing operation and the sorting operation There has been a problem that the work efficiency of the machine is reduced.

  Therefore, an object of the present invention is to provide a combine that can maintain the threshing performance and the sorting performance regardless of the load in the threshing section and prevent the work efficiency of the threshing operation and the sorting operation from being lowered. .

  In order to solve the above problems, the present invention takes the following means.

In Claim 1, it is a combine constituted so that power of an engine may be transmitted to a treating drum of a threshing part, and may be transmitted to a selection part, and engine speed detection means which detects the number of rotations of the engine, A load detecting means for detecting a load in the threshing part, an engine speed control means for controlling the engine speed, a speed adjusting means for adjusting the speed of the sorting part, and the engine speed control means, When the detection value of the load detection means is less than a threshold value, the engine speed is controlled to be a first set rotation speed, and when the detection value of the load detection means is greater than or equal to the threshold value, the engine speed The number of revolutions of the selection unit is controlled regardless of the detection value of the load detection unit, while controlling the number of revolutions to be a second set number of revolutions greater than the first set number of revolutions. And control means for controlling so as to maintain at a predetermined rotational speed, and the continuously variable transmission for transmitting the driving unit to shift the power of the engine, the gear ratio for changing the speed ratio of the continuously variable transmission The control means further comprises an adjusting means and a running speed detecting means for detecting a running speed, wherein the control means causes the engine speed control means to be set so that the engine speed becomes the first set speed or the second set speed. When the control is performed, the speed ratio adjusting means is controlled so that the speed ratio of the continuously variable transmission is a value that keeps the traveling speed at a predetermined traveling speed regardless of the detection value of the load detecting means. is there.

The

In claim 2 , as the front barrel that is rotationally driven by the engine, the rear barrel that is provided on the downstream side in the transport direction of the front barrel and is rotatable relative to the front barrel, A threshing actuator for rotationally driving the rear barrel, a front barrel rotational speed detecting means for detecting the rotational speed of the front barrel, and a rear barrel rotational speed detecting means for detecting the rotational speed of the rear barrel. The control means controls the threshing actuator such that when the front handling cylinder is rotationally driven, the rotational speed of the rear handling cylinder is constant above the rotational speed of the front handling cylinder. Is.

  The present invention has the following effects.

  In claim 1, when the load in the threshing portion is less than the threshold value, the engine speed is set to be relatively small, and the handling cylinder is rotated at an optimum speed corresponding to the load while improving fuel efficiency. It becomes possible to make it. On the other hand, when the load in the threshing portion is equal to or greater than the threshold value, it is possible to increase the rotation speed of the engine and increase the rotation speed of the handle cylinder so as to rotate at an optimum rotation speed corresponding to the load. . At this time, it is possible to prevent a change in the rotational speed of the sorting unit accompanying an increase or decrease in the rotational speed of the engine.

  Moreover, even when the load in the threshing portion is equal to or greater than the threshold value, the engine speed increases, so it is possible to reduce the grain loss due to the small grains. Therefore, regardless of the load in the threshing section, it is possible to maintain the threshing performance and the sorting performance and to prevent the work efficiency of the threshing work and the sorting work from being lowered.

In addition , when the engine speed increases or decreases based on the load in the threshing section, the change in running speed is prevented, the supply amount of cereals to the threshing section is kept constant, and the handling cylinder is driven to rotate stably. It becomes possible to make it. Therefore, regardless of the load in the threshing section, it is possible to maintain the threshing performance and prevent the work efficiency of the threshing operation from being lowered.

In Claim 2 , even if it is a case where the rotation speed of an engine changes based on the load in a threshing part, the rotation speed of a rear handling cylinder becomes always more than the rotation speed of a front handling cylinder, and it is a small grain in a threshing part. It is possible to reduce grain loss due to the like. Therefore, it can prevent that the work efficiency of threshing work falls.

The side view of the combine which concerns on one Embodiment of this invention. The schematic diagram of the power transmission path | route in a combine. Side surface sectional drawing of a threshing part and a selection part. The block diagram of a control means. The figure which shows the structure of a control means. The figure which shows the flow of control by a control means. Side surface sectional drawing of the threshing part and sorting part of another Example. Side surface sectional drawing of the threshing part and sorting part of another Example.

  Hereinafter, embodiments of the present invention will be described in detail.

  First, the whole structure of the combine 1 which concerns on one Embodiment of this invention is demonstrated.

  As shown in FIGS. 1 and 2, the combine 1 includes a traveling unit 3, a mowing unit 4, a threshing unit 5, a sorting unit 6, a grain storage unit 7, a waste processing unit 8, an engine unit 9, and a mission unit 10. A control unit 11 is provided.

  The traveling unit 3 is provided in the lower part of the body frame 2. The traveling unit 3 includes a crawler traveling device 12 having a pair of left and right crawlers, and the like, and is configured so that the aircraft can travel forward or backward by the crawler traveling device 12.

  The cutting unit 4 is provided at the front end of the machine frame 2 so as to be movable up and down with respect to the machine body. The cutting unit 4 includes a weeding tool 13, a pulling device 14, a cutting device 15, a transporting device 16, and the like. The pulling device 14 is configured to cause the pulverized cocoon to be cut by the cutting device 15, and the cut culm can be conveyed to the threshing unit 5 side by the conveying device 16.

  The threshing part 5 is provided at the left front part of the machine body frame 2 and is arranged behind the cutting part 4. The threshing unit 5 includes a feed chain 31, a handling cylinder 32, a processing cylinder 34, etc., and the cereals conveyed from the cutting unit 4 are inherited by the feed chain 31 and conveyed to the waste processing unit 8 side. It is configured so that the cereal grains inside can be threshed by the handling cylinder 32 and the unprocessed material from the handling cylinder 32 side can be processed by the processing cylinder 34.

  The sorting unit 6 is provided on the left side of the machine body frame 2 and is disposed below the threshing unit 5. The sorting unit 6 includes a swing sorting device 40, a wind sorting device 54, a grain transport device 50, and the like. The sorted product is wind-sorted by the wind sorting device 54 and the swarf and dust are discharged to the outside by the swarf discharging device, while the grain is transported to the grain storage unit 7 by the grain transport device 50. It is configured to be able to.

  The grain storage part 7 is provided in the right rear part of the body frame 2, and is arrange | positioned at the right side of the threshing part 5 and the selection part 6. FIG. The grain storage unit 7 includes a grain tank 21, a grain discharge device 22, and the like. The grain transported from the sorting unit 6 is temporarily stored in the grain tank 21, and the stored grain is stored as a grain. It is configured so that it can be discharged from the grain tank 21 by the particle discharging device 22 and further discharged to the outside after being conveyed in an arbitrary direction.

  The waste disposal unit 8 is provided at the left rear portion of the machine body frame 2 and is disposed behind the threshing unit 5. The waste processing unit 8 includes a waste transporting device 17, a waste cutting device 18, and the like, and the threshed cereals from the threshing unit 5 are handed over by the waste transporting device 17 and discharged to the outside. Alternatively, the waste material is transported to the waste cutting device 18, and the waste after the transportation is cut by the waste cutting device 18 and then discharged to the outside.

  The engine unit 9 is provided at the front right side of the machine body frame 2 and is disposed in front of the grain storage unit 7. The engine unit 9 includes an engine 27 and the like, and is configured so that power can be transmitted from the engine 27 to each unit device using this as a drive source via an appropriate power transmission mechanism to drive each unit device. Is done.

  Specifically, for example, as shown in FIG. 2, the power of the engine 27 can be transmitted to the crawler type traveling device 12 of the traveling unit 3 via a transmission 23 of the mission unit 10 described later, and the threshing unit 5 of the handling cylinder 32 and the processing cylinder 34, the swing sorting device 40 of the sorting unit 6 and the grain conveying device 50, the grain discharging device 22 of the grain storage unit 7, and the waste disposal processing unit 8. Transmission to the waste transporting device 17 and the waste cutting device 18 is possible.

  In the present embodiment, the electric motors 28 and 29 are disposed at arbitrary positions of the combine 1. The power of the electric motor 28, not the power of the engine 27, can be transmitted to the pulling device 14, the cutting device 15, and the conveying device 16 of the cutting unit 4 and to the feed chain 31 of the threshing unit 5. The power of the electric motor 29 can be transmitted to the wind sorting device 54 of the sorting unit 6.

  The mission unit 10 is provided at the front right side of the body frame 2 and is disposed in front of the engine unit 9. The transmission unit 10 includes a transmission 23 including a hydraulic continuously variable transmission 30 and the like, and before the power of the engine 27 of the engine unit 9 is transmitted to the crawler type traveling device 12 of the traveling unit 3, The power can be changed.

  The control unit 11 is provided at the front right side of the body frame 2 and is disposed above the engine unit 9 and the mission unit 10. The control unit 11 includes a control seat 24, operating tools including a steering handle 25, and the like so that a driver can be seated on the control seat 24 so that the driver can operate the devices of the respective parts using the operating tools. Configured.

  In this way, the combine 1 transmits the power of the engine 27 of the engine unit 9 or the power of the electric motors 28 and 29 to the devices of the respective parts by operating the operation tools in the control unit 11, and the traveling unit 3. While the machine is running, the harvesting unit 4 harvests the cereals from the field, the threshing unit 5 threshs the cereals from the harvesting unit 4, the sorting unit 6 sorts the cereal from the threshing unit 5, The grain storage unit 7 is configured to store the grain from the sorting unit 6 and at the same time the waste processing unit 8 can discharge the waste from the threshing unit 5 to the outside.

  Next, the structure of the threshing part 5 and the selection part 6 is demonstrated.

  As shown in FIGS. 2 and 3, the threshing unit 5 includes a feed chain 31, a handling cylinder 32, a processing cylinder 34, and the like. The sorting unit 6 includes a swing sorting device 40, a wind sorting device 54, a grain transport device 50, and the like.

  In the threshing unit 5, the handling cylinder 32 is formed in a cylindrical shape with a chamfered front end, and is disposed in the handling chamber 36 with the axial direction as the front-rear direction. The handling cylinder 32 is attached to a rotating spindle 37 that is rotatably supported between a front wall 36a and a rear wall 36b in the handling chamber 36, and power from the engine 27 is transmitted to the rotating spindle 37. As a result, the rotary support shaft 37 and the rotation support shaft 37 are integrally rotated around the axis in the front-rear direction. A receiving net 33 is disposed below the handling cylinder 32 so as to cover the lower half of the handling cylinder 32.

  The processing cylinder 34 is formed in a cylindrical shape, is parallel to the handling cylinder 32 with the axial direction as the front-rear direction, and is disposed in the processing chamber 38 on the right rear side. The processing chamber 38 communicates with the handling chamber 36 through a dust feed port provided on the left side of the front portion. The processing cylinder 34 is supported by a support shaft that is rotatably mounted in the process chamber 38 in the front-rear direction, and the power from the engine 27 is transmitted to the support shaft so that the front and rear thereof are integrated with the support shaft. It is driven to rotate around the direction axis. A processing cylinder net 35 is disposed below the processing cylinder 34.

  The feed chain 31 is disposed on the left side of the handling cylinder 32 and between the cutting unit 4 and the waste disposal unit 8. The feed chain 31 is wound around a drive sprocket and a plurality of driven sprockets provided on the feed chain frame on the left side of the handling cylinder 32, and the power from the electric motor 28 is transmitted to the drive sprocket to rotate. Is done.

  In the sorting unit 6, the swing sorting device 40 includes a swing sorting device main body 41, a feed pan 42, a chaff sheave 43, a Glen sheave 44, and a Strollac 45. The swing sorting device main body 41 is arranged below the handling cylinder 32 and the receiving net 33 and the processing cylinder 34 and the processing cylinder net 35 of the threshing unit 5 with the longitudinal direction as the front-rear direction. It is swung. The swing mechanism 46 is operated when power from the engine 27 is transmitted to its rotating shaft.

  The feed pan 42 is provided at the front portion of the swing sorting device main body 41 and is disposed below the front portion of the handling cylinder 32 and the receiving net 33 of the threshing portion 5. The chaff sheave 43 is provided in the front and rear halfway portion of the swing sorting device main body 41 and is disposed below the front of the handling cylinder 32 and the receiving net 33 of the threshing portion 5 and behind the feed pan 42.

  The Glen sheave 44 is provided in the middle of the front and rear of the swing sorting device main body 41 and is disposed below the chaff sheave 43. The Strollac 45 is provided at the rear part of the swing sorting device main body 41 and is arranged behind the chaff sheave 43 and behind the Glen sheave 44.

  The wind sorting device 54 includes a wind sorting device main body 51, a tang fan 52, and a suction fan 53. The tang fan 52 is installed horizontally in the left-right direction at the front part of the wind sorting apparatus main body 51 and is arranged below the rear part of the feed pan 42. The suction fan 53 is horizontally disposed above the rear end portion of the wind sorting device main body 51 and is disposed above the stroller 45. The tang fan 52 and the suction fan 53 are rotated when power from the electric motor 29 is transmitted to the rotating shaft thereof.

  The grain transport device 50 includes a first transport device 55, a second transport device 56, a first cerealing device 57, and a second reduction device 58. The first transport device 55 is installed horizontally in the left and right direction at the bottom of the wind sorting device main body 51, and is disposed behind the tang fan 52 and below the chaff sheave 43 and the grain sheave 44. The second transport device 56 is installed horizontally in the left-right direction at the bottom of the wind sorting device main body 51, and is disposed behind the first transport device 55 and below the stroller 45.

  The first cerealing device 57 is erected in the vertical direction on the right outside of the wind sorting device main body 51, connected to the first conveying device 55, and connected to the grain tank 21 of the grain storage unit 7. The second reduction device 58 is obliquely provided in the front-rear direction on the right outer side of the wind sorting device main body 51 and is connected to the second transport device 56, and the space above the handling chamber 36 of the threshing unit 5 or the swing sorting device 40. Connected to.

  In such a configuration, when the threshing operation and the sorting operation are performed, in the threshing unit 5, the culm from the cutting unit 4 is inherited by the feed chain 31 and is conveyed to the side of the waste disposal unit 8. The cereal meal being transported is threshed by the handling cylinder 32, and the processed product containing the grains, swarf, and dust falls into the sorting section 6 and is sorted by the receiving net 33. The unprocessed material that has not been threshed by the handling cylinder 32 is conveyed from the handling chamber 36 to the processing chamber 38 through the dust feed port, processed by the processing cylinder 34, and the processed product falls into the sorting unit 6. Sorted by the processing cylinder 35.

  In the sorting unit 6, the swing sorting device 40 is dropped from the front part of the receiving net 33 of the threshing unit 5 in a state where the swing sorting device 40 is operated, that is, in a state where the swing sorting device main body 41 is swung by the swing mechanism 46. The layer of the processed product is leveled by the feed pan 42, and the processed product is sorted by specific gravity. The material after sorting by the feed pan 42 is roughly sorted by the chaff sheave 43. Further, the processed material dropped from the receiving net 33 and the processing drum net 35 of the threshing unit 5 is roughly selected by the chaff sheave 43. After being sorted by the chaff sheave 43, it is precisely sorted by the sorting wind from the Glen sheave 44 and the Kara fan 52.

  Grains, swarf, and the like falling from the chaff sheave 43 and the grain sheave 44 are finely sorted by the sorting wind from the tang fan 52. At this time, the grains having a large specific gravity fall as the first thing against the sorting wind and are stored in the transport device 55 most. The lighter specific gravity is lighter than the second conveying device 56 by the sorting air from the Kara fan 52.

  Among the skipped items, a relatively heavy one falls as a second object and is accommodated in the second conveying device 56. Those except for this are further blown toward the Strollac 45 by the sorting wind from the Kara fan 52. Among them, the sawdust is loosened by the Strollac 45. The grain in the sawdust falls as a second product and is accommodated in the second transport device 56. Other dust and the like are sucked by the suction fan 53 and discharged from the third port 59 to the outside.

  The first thing is conveyed to the first cerealing device 57 by the first conveying device 55, and then conveyed to the grain tank 21 of the grain storage unit 7 by the first cerealing device 57, and temporarily stored in the grain tank 21. Is stored. The second item is conveyed to the second reduction device 58 by the second conveyance device 56, and then conveyed to the upper space of the handling chamber 36 of the threshing unit 5 or the swing sorting device 40 by the second reduction device 58 and threshed. Or it re-sorts with the rocking | swiveling sorter 40, without threshing.

  Next, the control configuration in the combine 1 will be described.

  As shown in FIG. 4, the combine 1 is provided with a control means 60. The control means 60 includes an engine speed detecting means 61 for detecting the rotational speed of the engine 27, a traveling speed detecting means 62 for detecting the traveling speed, a handling cylinder speed detecting means 63 for detecting the rotational speed of the handling cylinder 32, and a threshing. The load detecting means 64 for detecting the load in the unit 5 is electrically connected.

  The control means 60 also includes an engine speed control means 66 for controlling the speed of the engine 27, a speed ratio adjusting means 67 for changing the speed ratio of the hydraulic continuously variable transmission 30 included in the transmission 23, An adjusting means 70 for adjusting the rotational speed of the sorting unit 6 that is operated by power is electrically connected.

  In the present embodiment, the load detection means 64 is constituted by a rotation sensor that detects the number of rotations of the rotation support shaft 37 of the handling cylinder 32. That is, the load detection unit 64 is also used as the handling cylinder rotation number detection unit 63. In addition, the load detection means 64 can also be comprised with the flow volume detection sensor etc. which detect the flow volume of the grain in the threshing part 5, and the waste flow volume.

  The engine speed control means 66 comprises a fuel injection device, and operates the fuel adjustment rack of the fuel injection pump with a speed governing actuator via a mechanical governor or the like, thereby changing the fuel injection amount. The number of rotations can be controlled.

  The speed ratio adjusting means 67 has a speed change actuator composed of an electric motor or the like, and operates the trunnion shaft of the hydraulic stepless transmission device 30 by means of a speed change actuator via an interlocking mechanism. It is comprised so that the gear ratio of the transmission 30 can be changed.

  As shown in FIG. 5, the adjusting means 70 includes an adjusting actuator 71 composed of an electric motor and a planetary gear mechanism 72, and a swing sorting device in which the rotational speed of the sorting unit 6, that is, the power is transmitted from the engine 27. 40 (rotation shaft of the swing mechanism 46) can be adjusted by the adjusting actuator 71 and the planetary gear mechanism 72. In the adjusting means 70, the planetary gear mechanism 72 is provided in the middle of the power transmission path connecting the engine 27 and the swing sorting device 40 of the sorting unit 6, and the adjusting actuator 71 is combined therewith.

  Specifically, for example, the planetary gear mechanism 72 is provided with a sun gear 73, a ring gear 74, a plurality of planetary gears 75, and a carrier 76. The sun gear 73 is fixed to the transmission shaft 77 on the engine 27 side, and the ring gear 74 is disposed so as to surround the sun gear 73 concentrically. Each planetary gear 75 is rotatably supported by a carrier 76 so as to mesh with the sun gear 73 and the inner teeth of the ring gear 74, and the carrier 76 is fixed to a transmission shaft 78 on the sorting unit 6 side. The external teeth of the ring gear 74 are engaged with a gear 79 fixed to the output shaft of the adjustment actuator 71.

  And the control means 60 is comprised so that the following control may be performed in the state in which the handle 32 is rotationally driven in the threshing part 5. In this control, as shown in FIG. 6, first, the load in the threshing unit 5 is detected by the load detecting means 64 (S1). And it is determined whether this detected value, ie, the load in the threshing part 5 at the time of the detection, is more than a threshold value (S2).

  When it determines with the load in the threshing part 5 being less than a threshold value, control of the engine speed control means 66 is performed (S3). Under the control of the engine speed control means 66, the speed of the engine 27 is set to the first set speed, and thereafter kept at this first set speed. As a result, the rotational speed of the barrel 32 is set to a first predetermined rotational speed corresponding to the first set rotational speed, and the swing sorting device 40 of the sorting unit 6 is set to a predetermined rotational speed corresponding to the first set rotational speed. Is done.

  When it determines with the load in the threshing part 5 being more than a threshold value, control of the engine speed control means 66 is performed (S4). Under the control of the engine speed control means 66, the speed of the engine 27 is set to the second set speed, and thereafter kept at the second set speed. As a result, the rotational speed of the handling cylinder 32 is set to a second predetermined rotational speed corresponding to the second set rotational speed.

  The second set rotational speed here is the rated rotational speed of the engine 27, and is set in advance to be larger than the first set rotational speed. In other words, the first set rotational speed is smaller than the second set rotational speed, which is the rated rotational speed of the engine 27, and is preset to, for example, about 80% of the rated rotational speed. For this reason, the first predetermined rotation speed of the handling cylinder 32 is smaller than the second predetermined rotation speed.

  When the control of the engine speed control means 66 is performed so that the speed of the engine 27 becomes the second set speed as described above, the adjustment means 70 is controlled (S5). Under the control of the adjusting means 70, the speed adjusting actuator 71 is appropriately driven, and is transmitted to the transmission shaft 78 on the sorting unit 6 side in the middle of the power transmission path from the engine 27 to the swing sorting device 40 of the sorting unit 6. It acts through the planetary gear mechanism 72.

  As a result, even when the rotation speed of the engine 27 increases from the first set rotation speed to the second set rotation speed, adjustment is performed so that the rotation speed of the swing sorting device 40 does not change (increase) in conjunction with it. Thus, the predetermined rotational speed is maintained before and after the rotational speed of the engine 27 is increased. That is, the rotation speed of the swing sorting device 40 in this case is the same as the rotation speed when the rotation speed of the engine 27 is the first set rotation speed.

  In addition, when the rotation speed of the engine 27 is changed to the 1st setting rotation speed or the 2nd setting rotation speed according to the load in the threshing part 5, the rotation speed of the engine 27 is further based on the threshold value based on the threshold value. Until the engine speed is changed, the engine speed control means 66 is controlled so that the speed after the change is kept constant.

  Further, as described above, the control means 60 controls the engine speed control means 66 so that the speed of the engine 27 becomes the first set speed or the second set speed according to the load in the threshing unit 5. It is also possible to configure so that the gear ratio adjusting means 67 is controlled together with the control of the adjusting means 70.

  In this case, under the control of the transmission ratio adjusting means 67, the transmission actuator is appropriately driven, and a hydraulic continuously variable transmission is provided in the middle of the power transmission path from the engine 27 to the crawler traveling device 12 of the traveling unit 3. It acts on 30 via the trunnion shaft. Thus, the speed ratio of the hydraulic continuously variable transmission 30 is a value that keeps the traveling speed at a constant traveling speed regardless of whether the engine 27 has the first set speed or the second set speed. To be changed.

  As a result, when the rotation speed of the engine 27 increases from the first setting rotation speed to the second setting rotation speed, the rotation speed of the traveling unit 3, that is, the rotation speed of the crawler type traveling device 12 changes accordingly. The travel speed is maintained before and after the increase in the rotational speed of the engine 27. The same control as described above is also performed when the rotation speed of the engine 27 decreases from the second setting rotation speed to the first setting rotation speed.

  As described above, the combine 1 according to the embodiment of the present invention is configured to transmit the power of the engine 27 to the handling cylinder 32 of the threshing unit 5 and to the sorting unit 6. The engine speed detecting means 61 for detecting the rotational speed of the engine 27, the load detecting means 64 for detecting the load in the threshing section 5, the engine speed control means 66 for controlling the speed of the engine 27, and the rotation of the selecting section 6 The adjusting means 70 for adjusting the number and the engine speed control means 66 are controlled so that when the detected value of the load detecting means 64 is less than the threshold value, the speed of the engine 27 becomes the first set speed, the load When the detection value of the detection means 64 is equal to or greater than the threshold value, control is performed so that the rotation speed of the engine 27 becomes a second set rotation speed larger than the first set rotation speed, and the adjustment means 70 Regardless of the detected value of 64, the control means 60 for controlling the rotational speed of the sorting unit 6 to be kept at a predetermined rotational speed, that is, the rotational speed when the rotational speed of the engine 27 is the first set rotational speed. It shall be equipped with.

  Thereby, when the load in the threshing unit 5 is less than the threshold value, the rotational speed of the engine 27 is set to be relatively small, and the handling cylinder 32 is rotationally driven at an optimal rotational speed corresponding to the load while improving fuel efficiency. It becomes possible to make it. On the other hand, when the load in the threshing unit 5 is equal to or greater than the threshold value, the rotational speed of the engine 27 is increased, and the handling cylinder 32 is increased in rotational speed to be rotationally driven at an optimal rotational speed corresponding to the load. It becomes possible. At this time, it is possible to prevent a change in the rotational speed of the sorting unit 6 accompanying an increase or decrease in the rotational speed of the engine 27. In the present embodiment, it is possible to prevent an increase in the rotational speed of the sorting unit 6 accompanying an increase in the rotational speed of the engine 27. Moreover, even when the load in the threshing unit 5 is equal to or greater than the threshold value, the rotation speed of the engine 27 increases, so that it is possible to reduce the grain loss due to the small grains. Therefore, regardless of the load in the threshing unit 5, the threshing performance and the sorting performance can be maintained, and the work efficiency of the threshing work and the sorting work can be prevented from being lowered.

  The combine 1 according to the embodiment of the present invention also changes the gear ratio of the hydraulic continuously variable transmission 30 that changes the power of the engine 27 and transmits the power to the traveling unit 3 and the hydraulic continuously variable transmission 30. It further comprises a gear ratio adjusting means 67 and a traveling speed detecting means 62 for detecting the traveling speed, the control means 60 includes an engine rotational speed control means 66, and the rotational speed of the engine 27 is the first set rotational speed or the second rotational speed. When controlling to the set rotational speed, the gear ratio adjusting means 67 is a value that maintains the traveling speed at the predetermined traveling speed, regardless of the detected value of the load detecting means 64. It shall be controlled so that

  Thereby, when the rotation speed of the engine 27 increases / decreases based on the load in the threshing unit 5, the change in the running speed is prevented, the supply amount of the cereal to the threshing unit is kept constant, and the handling cylinder is stabilized. Can be rotationally driven. Therefore, regardless of the load in the threshing unit 5, it is possible to maintain the threshing performance and prevent the work efficiency of the threshing operation from being lowered.

  Furthermore, in the combine 1 in which the control by the control means 60 is performed, the threshing unit 5 may be provided with the following handling cylinder 82 in place of the above-described handling cylinder 32 to control the rotation speed thereof. .

  In this case, as shown in FIG. 7, the handling cylinder 82 includes a front handling cylinder 83 and a rear handling cylinder 84. The front handling cylinder 83 is the same as the above-described handling cylinder 32 except that the length in the front-rear direction is shortened. The front handling cylinder 83 is formed in a cylindrical shape with its front end chamfered, and the axial direction is the front-rear direction. Is disposed in the handling chamber 36. The front handling cylinder 83 is attached to a rotation support shaft 87 that is rotatably mounted on the front wall 36 a and the rear wall 36 b of the treatment chamber 36, and can rotate integrally with the rotation support shaft 87.

  An input pulley 88 is provided at the front end portion of the rotation support shaft 87 protruding outward from the front wall 36 a of the handling chamber 36, and can rotate integrally with the rotation support shaft 87. A transmission belt is wound around the input pulley 88 and a pulley provided on the transmission shaft on the engine 27 side. In this way, the power transmitted from the engine 27 to the input pulley 88 via the transmission belt is transmitted to the rotation support shaft 87, so that the front handling cylinder 83 is integrated with the rotation support shaft 87 in the longitudinal center. It is driven to rotate around.

  The rear handling cylinder 84 is formed in a cylindrical shape, and is disposed in the handling chamber 36 with the axial direction as the front-rear direction. The rear handling cylinder 84 is provided coaxially with the front handling cylinder 83 on the downstream side in the transport direction of the front handling cylinder 83, that is, on the rear side, and is supported by the rear end portion of the rotation support shaft 87 so as to be relatively rotatable. It is attached to the tube support shaft 91 and can rotate integrally with the tube support shaft 91. Here, the length of the rear handling cylinder 84 in the front-rear direction is set shorter than the length of the front handling cylinder 83 in the front-rear direction. The cylinder diameter of the rear handling cylinder 84 is set to be approximately the same as the cylinder diameter of the front handling cylinder 83.

  Driving means 92 is provided on the rear end side of the cylindrical support shaft 91 that protrudes from the rear wall 36b of the handling chamber 36 to the outside. And the cylinder support shaft 91 and the drive means 92 are interlockingly connected through an appropriate power transmission mechanism. Thus, the power is transmitted from the driving means 92 to the cylindrical support shaft 91 via the power transmission mechanism, so that the rear handling cylinder 84 is rotationally driven around the axial center in the front-rear direction together with the cylindrical support shaft 91.

  The drive means 92 has a drive actuator composed of an electric motor or the like, transmits power from the drive actuator to the tube support shaft 91, and defines the rear handle cylinder 84 on the tube support shaft 91 as the front handle cylinder 83. It is configured to be able to be driven to rotate independently. The driving means 92 is disposed at an appropriate position of the combine 1 and is electrically connected to the control means 60 as shown in FIG.

  Further, as shown in FIG. 8, the control means 60 includes a front handling cylinder rotation number detecting means 95 for detecting the rotation speed of the front handling cylinder 83 and a rear handling cylinder speed detection for detecting the rotation speed of the rear handling cylinder 84. Means 96 is connected. The front barrel rotation number detecting means 95 is constituted by a rotation sensor that detects the rotation number of the rotation spindle 87 of the front barrel 83. The rear handling cylinder rotation number detecting means 96 is constituted by a rotation sensor that detects the number of rotations of the cylinder support shaft 91 of the rear handling cylinder 84. In the present embodiment, the load detection means 64 is also used as the front barrel rotation number detection means 95.

  In the handling cylinder 82 configured as described above, the rotation speed of the front handling cylinder 83 is based on the control of the engine rotation speed control means 66 according to the load in the threshing section 5 by the control means 60 in the same manner as the above-described handling cylinder 32. Adjusted. On the other hand, the rotational speed of the rear handling cylinder 84 is adjusted based on the control of the driving actuator of the driving means 92 and is set to be equal to or higher than the rotational speed of the front handling cylinder 83.

  Specifically, when the rotational speed of the engine 27 is set to the first set rotational speed based on the load in the threshing unit 5 by the control of the engine rotational speed control means 66 by the control means 60, the front handling cylinder 83 is set to the first predetermined speed. The rear handling cylinder 84 is rotationally driven at a rotational speed greater than the first predetermined rotational speed. When the rotation speed of the engine 27 is set to the second set rotation speed based on the load in the threshing unit 5, the front handling cylinder 83 is rotationally driven at a second predetermined rotation speed larger than the first predetermined rotation speed, and the rear handling cylinder 84 is rotationally driven at the same rotational speed as the second predetermined rotational speed.

  As described above, the combine 1 according to the embodiment of the present invention is also provided on the downstream side of the front handling cylinder 83 that is rotationally driven by the engine 27 and the front handling cylinder 83 in the transport direction of the front handling cylinder 83. On the other hand, a rear handling cylinder 84 that can rotate relative to the rear handling cylinder 84 is provided as a handling cylinder 82, a driving unit 92 that rotationally drives the rear handling cylinder 84, and a front handling cylinder rotational speed detection unit that detects the rotational speed of the front handling cylinder 83. 95 and a rear handling cylinder rotational speed detection means 96 for detecting the rotational speed of the rear handling cylinder 84, and the control means 60 controls the driving means 92 when the front handling cylinder 83 is rotationally driven. The number of revolutions 84 is controlled to be constant above the number of revolutions of the front handling cylinder 83.

  Thereby, even if it is a case where the rotation speed of the engine 27 changes based on the load in the threshing part 5, the rotation speed of the rear handling cylinder 84 becomes always more than the rotation speed of the front handling cylinder 83, and the threshing section 5 It becomes possible to reduce the grain loss due to the small grains. Therefore, it can prevent that the work efficiency of threshing work falls.

DESCRIPTION OF SYMBOLS 1 Combine 5 Threshing part 6 Sorting part 27 Engine 30 Continuously variable transmission 32 Handle cylinder 60 Control means 61 Engine rotation speed detection means 62 Traveling speed detection means 64 Load detection means 66 Engine rotation speed control means 67 Gear ratio adjustment means 70 Adjustment means 82 Handling cylinder 83 Front handling cylinder 84 Rear handling cylinder 92 Driving means 95 Front handling cylinder rotation speed detection means 96 Rear handling cylinder rotation speed detection means

Claims (2)

A combine configured to transmit engine power to the barrel of the threshing unit and to transmit to the sorting unit,
Engine speed detecting means for detecting the engine speed;
Load detecting means for detecting a load in the threshing part;
Engine speed control means for controlling the engine speed;
A rotation speed adjusting means for adjusting the rotation speed of the sorting section;
When the detected value of the load detecting means is less than a threshold value, the engine speed control means is controlled so that the engine speed becomes a first set speed, and the detected value of the load detecting means is equal to or greater than the threshold value. The engine speed is controlled to be a second set speed greater than the first set speed, and the adjusting means is not limited to the detection value of the load detecting means, Control means for controlling so that the rotation speed is maintained at a predetermined rotation speed ,
A continuously variable transmission that shifts the power of the engine and transmits it to the traveling unit;
Gear ratio adjusting means for changing the gear ratio of the continuously variable transmission;
A travel speed detecting means for detecting the travel speed;
When the control means controls the engine speed control means so that the engine speed becomes the first set speed or the second set speed, the speed ratio adjusting means is detected by the load detecting means. A combine that controls the transmission ratio of the continuously variable transmission to a value that maintains the traveling speed at a predetermined traveling speed regardless of the value . As the front barrel that is rotated by the engine,
A rear handling cylinder provided on the downstream side in the transport direction of the front handling cylinder and rotatable relative to the front handling cylinder;
An actuator for threshing that rotationally drives the rear barrel;
A pre-cylinder rotation speed detection means for detecting the rotation speed of the front cylinder;
A rear cylinder rotation number detecting means for detecting the rotation number of the rear cylinder;
The said control means controls the said threshing actuator so that when the said front barrel is rotationally driven, the rotation speed of the said rear barrel becomes constant above the rotation speed of the said front barrel. Combine as described.

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