JP2018027060A - Harvester and agricultural work machine - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a harvester which can, regardless of a long culm crop, make a reaping trail in order and surely reap it.SOLUTION: A harvester comprises: an input shaft 7 which is disposed with a vertical shaft; an output shaft 8 which is coaxial to the input shaft and connected to a lower part of the input shaft; a cutter 6 which is pivotally supported by the output shaft in a manner permitting the rotation together with the output shaft; a drum 5 which is coaxial to the cutter and pivotally and rotatably supported; and a pair of rotors 1A which includes speed reduction mechanisms D built in the drum and disposed over the input shaft and the drum to reduce the speed of rotation of the input shaft and transmit it to the drum.SELECTED DRAWING: Figure 2

Description

  The present invention relates to a harvesting device and an agricultural machine used for harvesting long crops such as rice and corn along with their stems while traveling.

  The harvesting device, which is provided in an agricultural machine and used to harvest a long crop such as rice or corn while traveling, has a cutter around it as described in Patent Documents 1 to 3 below. One using a pair of rotors rotating about a vertical axis is known.

Japanese Patent Laid-Open No. 07-31263 (see FIG. 7) Chinese Patent Application Publication No. 1074239C (see FIG. 4) Japanese translation of PCT publication No. 2005-515596 (see FIG. 1)

  In the prior art rotors described in Patent Documents 1 and 2, a transmission device including a rotation transmission unit, a reduction gear, and the like is disposed on the lower side of the rotor, and by a driving force transmitted through the transmission device, Each of the pair of rotors rotates inward (the side where the rotors face each other) and feeds the long bamboo crops forward while cutting the stems together.

  By the way, in the prior arts described in Patent Documents 1 and 2, since the transmission device is arranged on the lower side of the rotor, the cutter does not bring the transmission device into contact with the ground and the stalk of the long bamboo crop is placed near the ground. It has been devised so that it can be cut.

  In Patent Document 1, the rotor is tilted so that the front side of the rotor faces the ground, thereby bringing the cutter on the front side of the rotor closer to the ground, and a space in which the transmission device is disposed between the lower surface of the rotor and the ground. Is secured.

  In Patent Document 2, the connection portion between the transmission device and the rotor is arranged inside the rotor, and the “lower sliding plate 51” is arranged on the lower side of the rotor to protect the transmission device, and the farm work At the time of attachment to the machine, as in Patent Document 1, the front side of the rotor is inclined so as to face the ground, thereby bringing the cutter on the front side of the rotor closer to the ground and a transmission device between the lower surface of the rotor and the ground. It seems that the space to be arranged is secured.

  However, the conventional cutting devices of Patent Documents 1 and 2 have to increase the inclination angle of the rotor with respect to the ground in order to move the cutter closer to the ground and secure a space for disposing the transmission device. Corresponding to the angle, the cutting angle of the cutter with respect to the stem axis at the time of cutting is increased, so that the cut surface of the stem becomes slanted and the cutting marks become cluttered, and rice WCS (rice fermentation roughage) In long-crop crops with soft and light stems such as rice for cropping, the stems fall down when cutting, resulting in uncut crops, and the long-crop crops that have been cut up the slope to the culm opening due to a large inclination angle. There was a problem that it was easy to stay because of its shape.

  In contrast to Patent Documents 1 and 2, in Patent Document 3, since the transmission device is located above the rotor, the above-described problems of Patent Documents 1 and 2 can be solved. However, at the time of movement, the cutting device is raised so that the cutter or rotor does not come into contact with the ground or the like. At this time, the space in the height direction above the cutting device is narrowed by the transmission device arranged above. Therefore, there is a problem that it is difficult to secure a space for raising the reaping device. In addition, the weight balance between the front and rear of the farm work machine is worsened because the weight of the gear train consisting of a large number of gears, the rotation transmission part by a large number of pulleys and belts (sprockets and chains), and the speed reducer are concentrated above the rotor. As a result, there is a problem in that the harvesting workability of the agricultural machine is impaired.

  That is, there is a demand for a reaping device that can be hunted in an orderly manner regardless of the type of long bean crop and that has no hunting residue and has good reaping workability during work.

  In order to solve the above-mentioned problems, the means adopted by the present invention is a cutting device that is attached to a traveling body and includes a pair of rotors having a cutter, and the rotor has a vertical axis. An input shaft arranged coaxially with the input shaft and connected to the lower side of the input shaft; a cutter pivotally supported so as to rotate integrally with the output shaft relative to the output shaft; A drum that is rotatably supported coaxially with the cutter, and is disposed in the drum so as to extend over the input shaft and the drum, and reduces the rotation of the input shaft to the drum. This is a reaping device characterized by including a speed reduction mechanism for transmission.

  The speed reduction mechanism is a planetary gear mechanism, and the planetary gear mechanism is engaged with the sun gear while being engaged with the sun gear, so as to rotate integrally with the input shaft. A planetary gear pivotally supported so as to rotate around the planetary gear, and a planetary carrier that pivotally supports the planetary gear and is rotatably supported with respect to the input shaft and integrally connected to the drum. It is preferable to provide.

  The planetary gear mechanism includes a first planetary gear mechanism and a second planetary gear mechanism that is coaxial with and arranged below the first planetary gear mechanism, and the first planetary gear mechanism includes: A first sun gear that is pivotally supported so as to rotate integrally with the input shaft, and a shaft that is supported so as to rotate around the first sun gear while meshing with the first sun gear. The second planetary gear mechanism includes a first planetary gear, a first planetary carrier that pivotally supports the first planetary gear and is rotatably supported with respect to the input shaft. A second sun gear rotatably supported with respect to the input shaft and connected to the first planet carrier so as to rotate integrally with the first planet carrier; Rotating around the second sun gear while meshing with the second sun gear A second planetary gear that is pivotally supported on the second planetary gear, and a second planetary carrier that pivotally supports the second planetary gear, is rotatably supported with respect to the input shaft, and is connected to the drum portion. It is preferable to comprise.

  A rotation transmission mechanism configured to transmit rotation to the input shaft, the rotation transmission mechanism having a rotation shaft having an axis in a direction intersecting the axis of the input shaft, and one end side of the rotation shaft; The input unit is pivotally supported so as to rotate integrally with the rotary shaft, and is supported across the other end side of the rotary shaft and the upper end side of the input shaft. It is preferable to include a rotation conversion mechanism that converts the rotation into a rotation conversion mechanism.

  It is preferable that the rotation conversion mechanism includes a bevel gear supported by the rotation shaft and a bevel gear supported by the input shaft so as to mesh with the bevel gear.

  This is an agricultural machine characterized by having the above-described mowing device.

It is a front side perspective view of an agricultural working machine provided with the cutting device of one embodiment concerning the present invention. It is a center cross-sectional view of a rotor. 2A is a sectional view taken along line (a)-(a) in FIG. 2, and FIG. 2B is a sectional view taken along line (b)-(b) in FIG.

  DESCRIPTION OF EMBODIMENTS Hereinafter, a harvesting apparatus A according to an embodiment of the present invention and an agricultural machine B including the harvesting apparatus A will be described with reference to FIGS.

  Here, as shown in FIG. 1, the agricultural machine B includes a traveling body B <b> 1 in which the cutting device A is disposed in the front (forward direction), a shredder B <b> 2 disposed in the rear of the mowing device A, and a shredded portion. A duct B3 that is connected to the shredded portion B2 at the rear of B2 and discharges the shredded long crab crop to the rear, and the long crab crop that is disposed and rearward of the duct B3. And a molding part B4 which receives and molds into a roll bale.

  The agricultural machine B cuts long crops by the cutting device A while moving forward, and is shredded while being conveyed, and the shredded long crops are discharged to the molding part B4. The discharged long bean crop is put into the molding part B4 from the outlet B30 of the duct B3 through the inlet B40 opened in the molding part B4, and is molded into a roll bale by the molding part B4 and molded. The roll bale is discharged from the rear of the molding part B4 to the field.

  In addition, the farm work machine B is not limited to the one provided with the molding part B4, but the one provided with a storage part (not shown) for storing the long crops to be discharged, or the accompanying truck (see FIG. It is also possible to discharge the long crops toward the loading platform (not shown).

  The reaping device A has a pair of rotors 1A and 1B arranged so as to be adjacent to each other in the direction orthogonal to the front-rear direction in the horizontal direction (left-right direction). Since both the rotors 1A and 1B have the same configuration, only the rotor 1A will be described below, and the description of the rotor 1B will be omitted.

  The rotor 1A is connected to a belt driving unit C formed by winding a driving belt C3 around a driving pulley C1 and a plurality of driven pulleys C2 that are rotated by driving rotation extracted from an engine (not shown) of the traveling body B1. The shaft is supported so as to rotate by being transmitted through the rotation transmission mechanism 2.

  As shown in FIGS. 2 and 3, the rotor 1 </ b> A is arranged below the first planetary gear mechanism 3 rotated by the rotation transmission mechanism 2, and the first planetary gear mechanism 3. Is rotated about a vertical axis by a speed reduction mechanism D constituted by the second planetary gear mechanism 4 that rotates by being transmitted.

  The rotor 1A incorporates a speed reduction mechanism D, is connected to the second planetary gear mechanism 4 side, rotates with the rotation of the second planetary gear mechanism, and the first planetary gear mechanism 3. Is connected to the lower side of the input shaft 7 coaxially with an input shaft 7 having a vertical axis and a rotation axis of the rotor 1A. And an output shaft 8 that is pivotally supported.

  The rotation transmission mechanism 2 is disposed so as to extend across the input shaft 7 protruding from the upper surface of the rotor 1A and the driven pulley C2 on the most downstream side of the belt drive unit C, and the driven pulley C2 on one end side with the horizontal direction as an axis. On the other end side of the rotating shaft 2A, the bevel gear 2B supported so as to rotate integrally with the rotating shaft 2A, and the upper end side of the input shaft 7. A bevel gear 2C that rotates integrally with the input shaft 7 and is pivotally supported so as to mesh with the bevel gear 2B is provided.

  As shown in FIG. 1, the rotation transmission mechanism 2 is operated by a driven pulley C2 that rotates by transmitting the driving rotation of the driving pulley C1 via the driving belt C3. The rotating shaft 2A and the bevel gear 2B rotate along with the driven pulley C2 that rotates about the axis of the bevel, and the bevel gear 2C that meshes with the bevel gear 2B rotates about the upper and lower axes. The input shaft 7 is rotated by the rotation of 2C.

  The rotation transmission mechanism 2 is not limited to the illustrated configuration, and may be any configuration that can transmit the drive rotation extracted from the engine of the traveling body B1 to the input shaft 7.

  The first planetary gear mechanism 3 is engaged with the first sun gear 3A and the first sun gear 3A that are pivotally supported so as to rotate integrally with the input shaft 7, and around the first sun gear 3A. A first planetary gear 3B pivotally supported so as to rotate, a first planetary carrier 3C pivotally supported with respect to the input shaft 7 while pivotally supporting the first planetary gear 3B, The first planetary gear 3B is disposed so as to surround the first planetary gear 3B, and the first planetary gear 3B is engaged with the first inner teeth 3D.

  In the first planetary gear mechanism 3, the first sun gear 3A is rotated by the rotation of the input shaft 7, and the first planetary gear 3B is rotated by the rotation of the first sun gear 3A. 3C is rotated around the first sun gear 3A.

  The second planetary gear mechanism 4 is rotatably supported with respect to the input shaft 7, and is connected to the first planet carrier 3C so as to rotate integrally with the first planet carrier 3C. A second planetary gear 4B and a second planetary gear 4B that are supported so as to rotate around the second sun gear 4A while meshing with the second sun gear 4A. The second planetary carrier 4C is rotatably supported with respect to the input shaft 7 and is connected to the drum 5, and the second planetary gear 4B is disposed so as to surround the second planetary gear 4B. The second planetary gear 4D is engaged with the planetary gear 4B.

  In the second planetary gear mechanism 4, the second sun gear 4A rotates around the input shaft 7 as a rotation center by the rotation of the first planet carrier 3C accompanying the rotation of the first planetary gear 3B. The rotation of the sun gear 4A causes the second planetary gear 4B to rotate around the second sun gear 4A together with the second planetary carrier 4C.

  The second planet carrier 4C is connected to a rotating cylinder 40C provided coaxially with the input shaft 7 so as to surround the input shaft 7, and the rotating cylinder 40C rotates integrally with the second planet carrier 4C. Has been.

  The rotating cylinder 40C is integrally provided with a flange 41C connected to a flange 50A provided on the inner peripheral surface of the drum 5, and the rotation of the rotating cylinder 40C rotated by the rotation of the second planetary carrier 4C is as follows. The rotation of the drum 5 is transmitted through the flange 41C and the flange 50A.

  The drum 5 is pivotally supported around the input shaft 7 with the input shaft 7 as a rotation center. On the outer periphery of the drum 5, a plurality of conveying blades 50 are integrally protruded along the axis of the input shaft 7, and the conveying blades 50 rotate integrally with the drum 5, thereby holding the long crops while holding the long crops. It is made to convey to the cut part B2.

  The cutter 6 includes a flange 60 that is pivotally supported so as to rotate integrally with the output shaft 8, and a cutting blade 61 that is fixed to the outer peripheral edge of the flange 60. The cutting blade 61 has a length that protrudes more in the radial direction than the outer periphery of the lower end of the drum 5, and is configured to cut the long crop by rotating integrally with the output shaft 8.

  The input shaft 7 and the output shaft 8 are coupled so as to rotate integrally, and the rotation of the input shaft 7 input from the rotation transmission mechanism 2 is directly transmitted to the output shaft 8.

  Here, the deceleration operation by the above-described reduction gear D will be described. The reduction gear D transmits the rotation input to the input shaft 7 directly to the first sun gear 3A and the output shaft 8, and the first sun gear and the output shaft 8 have the same number of rotations as the input shaft 7. Rotate.

  The gear ratio between the first sun gear 3A and the first planetary gear 3B is set such that [the number of revolutions of the first sun gear 3A> the number of revolutions of the first planetary gear 3B] The rotational speed of the first planet carrier 3C is set to be smaller (the rotational speed is lower) than the rotational speed of the shaft 7.

  That is, the first planet carrier 3C rotates at a rotation speed lower than the rotation speed of the first sun gear 3A, and the second sun gear 4A rotates together with the first planet carrier 3C. Due to the rotation of the second sun gear 4A, the second sun gear 4B rotates with the second planet carrier.

  The gear ratio between the second sun gear 4A and the second planetary gear 4B is set so that [the number of revolutions of the second sun gear 4A> the number of revolutions of the second planetary gear 4B] The second planetary carrier 4C is set so that the number of rotations of the second planetary carrier 4C decreases (the rotation speed decreases) with respect to the number of rotations of the second sun gear 4A.

  That is, the second planet carrier 4C rotates at a rotational speed lower than the rotational speed of the second sun gear 4A, and the drum 5 rotates integrally with the second planet carrier 4C.

  Therefore, by such a reduction gear D, on the one hand, the output shaft is rotated by the same number of rotations input to the input shaft 7, and on the other hand, the first planetary gear mechanism 3 and the second planetary gear mechanism 4 Thus, the rotation of the input shaft 7 can be decelerated and the drum 5 can be rotated.

  In the reduction gear D, a reduction ratio in which the rotation of the drum 5 is 1/32 with respect to the rotation of the cutter 6 is suitable for conveying a long crop while cutting (for example, the rotation of the cutter 6 at 1540 rpm). (The rotation of the drum 5 is 48 rpm). In order to achieve this reduction ratio, it is preferable that the speed reduction device D has two planetary gear mechanisms of the first planetary gear mechanism 3 and the second planetary gear mechanism 4 as illustrated.

  Further, the speed reduction device D is not limited to two planetary gear mechanisms including the first planetary gear mechanism 3 and the second planetary gear mechanism 4, and may be one planetary gear mechanism. A chain may be wound around a gear train with an adjusted gear ratio or a sprocket with an adjusted gear ratio.

  According to such a reaping device A, the speed reduction device D is built in the drum 5 of the rotor 1A, and the rotation transmission mechanism 2 that transmits the rotation to the speed reduction device D is disposed above the rotor 1A. The inclination angle of the rotor 1A with respect to the rotor can be reduced or the inclination angle can be set to “0”, and the cutting angle of the cutter 6 with respect to the stem axis at the time of cutting is reduced corresponding to the inclination angle of the rotor 1A. In addition, since only the rotation transmission mechanism 2 is arranged above the rotor 1A, a space in the height direction for raising the reaping device A above the rotor 1A is provided. Can be secured.

  In addition, since the reduction gear D is based on a planetary gear mechanism, the weight can be reduced as compared with a reduction gear using a large number of gear trains, and the weights of the rotation transmission mechanism 2 and the reduction gear D are only above the rotor 1A. Since it can disperse | distribute up and down without concentrating, the weight balance before and behind the agricultural machine B can be made favorable.

  Therefore, this cutting device A can arrange the cutting traces and can surely cut even long crops with soft stems such as rice for WCS. And the farm work machine B provided with this reaping device A can tidy the cut traces, and can reliably shave even in a long crop with a soft stem like rice for WCS. It is possible to provide traveling performance and cutting workability.

  It should be noted that the present invention is not limited to the illustrated embodiments, and can be implemented with configurations within a range that does not deviate from the contents described in the respective claims.

A: Harvesting device B: Agricultural implement D: Reduction mechanism 1A: Rotor 1B: Rotor 2: Rotation transmission mechanism 3: First planetary gear mechanism 4: Second planetary gear mechanism 5: Drum 6: Cutter 7: Input shaft 8 : Output shaft 2A: Rotating shaft 2B: Bevel gear 2C: Bevel gear 3A: First sun gear 3B: First planetary gear 3C: First planet carrier 4A: Second sun gear 4B: Second planetary gear 4C: Second planet carrier

Claims (6)

  A cutting device mounted on a traveling body and provided with a pair of rotors having a cutter, the rotor having an input shaft arranged with a vertical axis, coaxial with the input shaft, An output shaft connected below the input shaft, a cutter pivotally supported so as to rotate integrally with the output shaft relative to the output shaft, a drum pivotally supported coaxially with the cutter, A mowing apparatus comprising: a reduction mechanism that is built in a drum and that is disposed so as to extend between the input shaft and the drum, and that decelerates rotation of the input shaft and transmits the rotation to the drum.   The speed reduction mechanism is a planetary gear mechanism, and the planetary gear mechanism is engaged with the sun gear while being engaged with the sun gear, so as to rotate integrally with the input shaft. A planetary gear pivotally supported so as to rotate around the planetary gear, and a planetary carrier that pivotally supports the planetary gear and is rotatably supported with respect to the input shaft and integrally connected to the drum. The reaping device according to claim 1, further comprising:   The planetary gear mechanism includes a first planetary gear mechanism and a second planetary gear mechanism that is coaxial with and arranged below the first planetary gear mechanism, and the first planetary gear mechanism includes: A first sun gear that is pivotally supported so as to rotate integrally with the input shaft, and a shaft that is supported so as to rotate around the first sun gear while meshing with the first sun gear. The second planetary gear mechanism includes a first planetary gear, a first planetary carrier that pivotally supports the first planetary gear and is rotatably supported with respect to the input shaft. A second sun gear rotatably supported with respect to the input shaft and connected to the first planet carrier so as to rotate integrally with the first planet carrier; Rotating around the second sun gear while meshing with the second sun gear A second planetary gear that is pivotally supported on the second planetary gear, and a second planetary carrier that pivotally supports the second planetary gear, is rotatably supported with respect to the input shaft, and is connected to the drum portion. The reaping device according to claim 2, further comprising:   A rotation transmission mechanism configured to transmit rotation to the input shaft, the rotation transmission mechanism having a rotation shaft having an axis in a direction intersecting the axis of the input shaft, and one end side of the rotation shaft; The input unit is pivotally supported so as to rotate integrally with the rotary shaft, and is supported across the other end side of the rotary shaft and the upper end side of the input shaft. The reaping device according to any one of claims 1 to 3, further comprising a rotation conversion mechanism that converts the rotation.   5. The rotation converting mechanism includes a bevel gear supported on the rotating shaft and a bevel gear supported on the input shaft so as to mesh with the bevel gear. Reaping device. A farm working machine comprising the reaping device according to any one of claims 1 to 5.

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