JP4944825B2 - Axle-driven tillage rotor - Google Patents

Description

  According to the present invention, a rotor shaft that has one end connected to an axle of a walking work machine is provided with three tilled claws extending outward from the rotor shaft at equal intervals in the circumferential direction of the rotor shaft. Axle-driven type, which is provided with a substantially triangular rotor plate attached to the other end portion of the rotor shaft, and is provided with three extending portions that extend radially outward and are positioned at equal intervals in the circumferential direction. This relates to a tilling rotor.

  The axle-driven tiller rotor is detachably attached to the left and right outer ends of the axle provided in the left-right direction at the lower part of the walking work machine. Therefore, when working on the axle of a walking work machine, it is driven by the power from the axle to function as a working device that performs work such as tillage, plowing or soil cultivation, and as a propulsion wheel that propels the machine Demonstrate and function. In addition, by providing a rotor plate at the other end of the rotor shaft that becomes the outer end when connected to the axle, it suppresses the decrease in straightness due to scattering of soil during the work and shaking of the aircraft in the left-right direction. is there.

  By the way, in the tilling rotor as described above, for example, the rotor plate has the same extending portions and the extending end portions of the three tilling claws located near the rotor plate in the circumferential direction of the tilling rotor. When attached to the other end portion of the rotor shaft so as to be positioned, when rotating the tilling rotor, along with the rotation, the extending end portion of each tillering nail located on the outer periphery side of the tilling rotor Each extending portion of the rotor plate acts on the uncultivated land portion while changing the height to the ground in the same cycle.

  In other words, in this exemplary configuration, the state in which the extension part of the rotor plate and the extension end part of the tilled nail are located directly below the axle of the walking work machine is a state in which the ground height of the fuselage is maximized. From this state, the state in which the extended portion of the rotor plate and the extended end portion of the tilled claw advanced the rotation angle of 60 degrees in the rotation direction of the tilling rotor is a state where the ground height of the fuselage is minimized. Conceivable. For this reason, the vertical movement of the machine body during work increases, and the workability due to the vertical movement is reduced.

Therefore, in the axle-driven tiller rotor as described above, each extending portion of the rotor plate has two tillers in the circumferential direction with respect to the three tiller claws located near the rotor plate. It has been considered that the rotor plate is attached to the other end portion of the rotor shaft so as to be positioned between the extended end portions of the claw (see, for example, Patent Document 1).
Japanese Patent No. 4039496

  According to the above-described conventional configuration, during the rotation driving of the tilling rotor, the extending end portions of the tilling tabs and the extending portions of the rotor plate located on the outer peripheral side of the tilling rotor are accompanied by the rotation. In the state where the operation cycle for those uncultivated land portions is made to differ by half a cycle, it acts on the uncultivated land portions one after another while changing the respective ground heights. That is, in this conventional configuration, the state in which the extension part of the rotor plate or the extension end part of the tilled nail is located directly under the axle of the walking work machine is a state in which the ground height of the fuselage is maximized, From this state, it is considered that the state in which the extension of the rotor plate or the extension end of the tilled nail advances the rotation angle of 30 degrees in the rotation direction of the tilling rotor is the state in which the ground height of the airframe is minimized. . As a result, compared to the above-described exemplary configuration, the vertical movement of the airframe during work can be reduced, and a decrease in workability due to the vertical movement can be suppressed.

  By the way, each tilled nail is formed so as to extend while curving from the rotor shaft toward the outer side on the lower side in the rotation direction. Thereby, at the time of work, each tilled nail is driven into the uncultivated land portion in order from the portion on the upper side in the rotational direction with a small amount of outward extension to plow the uncultivated land portion. As a result, even when the uncultivated land portion is hard, the impact when the plowed nail is driven into the uncultivated land portion can be reduced.

  On the other hand, each extending portion of the substantially triangular rotor plate is formed so as to extend outward in the radial direction along the radial direction. Therefore, at the time of work, the front edge part of the extension part with a large outward extension amount is driven into the uncultivated land part at once. As a result, when an uncultivated land part is hard, the impact when the front edge part of each extension part in a rotor plate is driven into an uncultivated land part becomes large.

  When the tilled claws having such properties and the extended portions of the rotor plate are arranged as in the above-described conventional configuration, each extended portion of the rotor plate is in front of the uncultivated land when working. After being cultivated by being driven into the site, it is driven into the uncultivated land portion relatively far from the cultivated land portion cultivated at the extended end of the cultivated talons with a delay from the preceding cultivated talons. become. Therefore, a strong impact is generated every time each extending portion of the rotor plate is driven into the uncultivated land portion, and workability due to the impact is reduced.

  An object of the present invention is to suppress a decrease in workability due to a strong impact caused by driving each extended portion of a rotor plate into a hard uncultivated land during work.

In order to achieve the above object, in the invention according to claim 1 of the present invention,
The rotor shaft that has one end connected to the axle of the walking type work machine has three tilled claws extending outward from the rotor shaft so as to be positioned at equal intervals in the circumferential direction of the rotor shaft. Deploy,
A substantially triangular rotor plate including three extending portions extending outward in the radial direction and positioned at equal intervals in the circumferential direction;
The three extending portions are extended between the extending end portions of the two tillering claws in the circumferential direction, and the extending end portion of the tilling nail preceding the intermediate position between the extending end portions. The rotor plate is attached to the other end portion of the rotor shaft so as to be located at a position close to.

  According to this characteristic configuration, during the rotation driving of the tilling rotor, with the rotation, the extending end portion of each tillering nail located on the outer peripheral side of the tilling rotor and each extending portion of the rotor plate, In the state which made the action period with respect to those uncultivated land parts differ, it will act on an uncultivated land part one after another, changing each ground height.

  As a result, compared with the case where the extended end of each tilled nail and each extended portion of the rotor plate act on the uncultivated land portion while changing the ground height at the same cycle, The vertical movement can be reduced, and a decrease in workability due to the vertical movement can be suppressed.

  In the operation cycle according to the above configuration, each extended portion of the rotor plate is cultivated at the extended end portion of the tilled nail after the preceding tilled nail is driven into the uncultivated portion and plowed. Immediately after it is woken up, it comes to be driven into the soft uncultivated land part where the tilling action of the preceding tillage nail has reached.

  As a result, it is possible to reduce the impact when each extending portion of the rotor plate is driven into the uncultivated land portion, and it is possible to suppress a decrease in workability due to the impact.

  Therefore, it is possible to suppress a decrease in workability due to an impact when each extending portion of the rotor plate is driven, while suppressing a decrease in workability due to the vertical movement of the airframe during work. Excellent workability can be obtained stably.

In the invention according to claim 2 of the present invention, in the invention according to claim 1,
Three tiller claws positioned at equal intervals in the circumferential direction of the rotor shaft in the same manner as the tiller claws at a position closer to the one end of the rotor shaft than the three tiller claws. Equipped,
The three tilled claws on the one end side are equipped so that their extending ends are positioned in the middle of the two extending portions in the circumferential direction.

  According to this characteristic configuration, at the time of work, at the time of working to rotate the tillage rotor, along with the rotation, the extended end of each tillage nail on one end side and each tillage nail on the other end side The extension end and each extension part of the rotor plate will act on the uncultivated land part one after another while changing the height of the respective ground in a state in which the operation cycle with respect to the uncultivated land part is different. .

  Thereby, the vertical motion of the machine body at the time of work can be made much smaller, and the deterioration of workability due to the vertical motion can be more effectively suppressed.

  Therefore, while suppressing the deterioration of workability due to the vertical movement of the airframe during work more effectively, the deterioration of workability due to the impact when each extension part of the rotor plate is driven is suppressed. As a result, more excellent workability can be stably obtained.

[First Embodiment]

  Hereinafter, a first embodiment, which is an example of the best mode for carrying out the present invention, will be described with reference to the drawings.

  The axle-driven tiller rotor according to the present invention is a pair of left and right detachably attached to the left and right outer ends of the axle provided in the left and right direction at the lower part of the walking work machine. And since these are the same structures of the left-right symmetry, below, only the structure of the left tilling rotor arrange | positioned on the left side of a walking type working machine is demonstrated.

  FIG. 1 is an exploded perspective view of a left tilling rotor 1. FIG. 2 is a rear view of the left tilling rotor 1. FIG. 3 is a left side view of the left tilling rotor 1. FIG. 4 is a right side view of the left tilling rotor 1.

  As shown in these drawings, the tilling rotor 1 is configured by mounting a rotor plate 3 on a rotor 2 that is detachably connected to an axle (not shown) of a walking work machine.

  In the rotor 2, six tilled claws 5, 6 are positioned at an equal interval (60 ° interval) in the circumferential direction of the rotor shaft 4 on the rotor shaft 4 having a substantially hexagonal shape when viewed from the side. Are arranged so as to be positioned at a predetermined interval in the axial direction.

  The rotor shaft 4 is formed with recesses 4a on each surface in the circumferential direction, and each of the recesses 4a is equipped with one U-shaped connecting portion 7 one by one. Each connecting portion 7 is located at a predetermined interval in the axial direction of the rotor shaft 4, and the three connecting portions 7 located on the right half (one end side) of the rotor shaft 4 are arranged around the rotor shaft 4. The three connecting portions 7 positioned at equal intervals (120 degree intervals) in the direction and further positioned on the left half portion (the other end side) of the rotor shaft 4 are rotors relative to the three connecting portions 7 in the right half portion. While having a rotation angle difference of 60 degrees in the circumferential direction of the shaft 4, they are arranged so as to be positioned at equal intervals (120-degree intervals) in the circumferential direction of the rotor shaft 4. Each connecting portion 7 is provided with a connecting hole (not shown) for inserting a bolt.

  Each tilled nail 5, 6 is formed so that its base end portion can be inserted into the corresponding connecting portion 7. Each base end is provided with a connecting hole (not shown) for inserting a bolt.

  Thereby, the base end part of the corresponding tilling nail | claw 5 is inserted in the three connection parts 7 located in the right half part of the rotor shaft 4, and three connection parts located in the left half part of the rotor shaft 4 are also included. 7, by inserting the base end portion of the corresponding tilled claws 6, inserting bolts 8 into their connecting holes (not shown), and fixing them with nuts 9, 5 and 6 can be detachably mounted.

  In the state where the rotor shaft 4 is provided with the respective tilling claws 5, 6, the three tilling claws 5 located in the right half of the rotor shaft 4 are arranged around the rotor shaft 4. It becomes located at equal intervals (120 degree intervals) in the direction. Further, in the left half of the rotor shaft 4, the three tillage claws 6 located in the left half are 60 degrees in the circumferential direction of the rotor shaft 4 with respect to the right half of the tiller claw 5. While having a difference in rotation angle, the rotor shaft 4 is positioned at equal intervals (120 degree intervals) in the circumferential direction. As a result, as a whole, the rotor shaft 4 has six tilled claws 5 and 6 positioned at equal intervals (60-degree intervals) in the circumferential direction of the rotor shaft 4.

  In addition, since the coupling portions 7 are provided in the respective concave portions 4a of the rotor shaft 4, the rotation portion of the tiller rotor 1 is rotated by the corner portion 4b of the rotor shaft 4 positioned on the upper side in the rotational direction of the bolt 8 and the nut 9. The contact of the arable soil with the bolt 8 and the nut 9 can be suppressed, and the wear of the bolt 8 and the nut 9 due to the contact can be suppressed. As a result, it is possible to suppress a decrease in maintainability due to the difficulty of removing the cultivated claws 5 and 6 due to wear of the bolts 8 and nuts 9.

  Each tilling nail 5, 6 is formed so as to extend while curving from the rotor shaft 4 toward the outer side on the lower side in the rotational direction. Thereby, at the time of work, each tilled nail | claw 5,6 is driven into an uncultivated land part in order from the part of the rotation direction upper side with the small extension amount to the outside, and plows an uncultivated land part. Become. As a result, even when the uncultivated land portion is hard, the impact when the tilled claws 5 and 6 are driven into the uncultivated land portion is reduced.

  A cylindrical shaft 10 that is externally fitted to the axle of the walking work machine is disposed at the center of the rotor shaft 4 on the right end side (one end side). The axle shaft and the cylindrical shaft 10 are provided with connection holes (not shown) that allow insertion of connection pins 11 for connecting the axle shaft and the cylindrical shaft 10 so as to be integrally rotatable. In the rotor shaft 4, an insertion hole (not shown) that allows the connection pin 11 to be inserted is formed in a pair of predetermined locations facing the connection hole of the cylindrical shaft 10. A pin hole (not shown) for inserting a retaining pin is formed in the insertion end of the connecting pin 11.

  Thereby, after the cylindrical shaft 10 of the rotor 2 is externally fitted to the axle of the walking work machine, the connecting pin 11 is inserted through the insertion hole of the rotor shaft 4, the connecting hole of the cylindrical shaft 10, and the connecting hole of the axle. By inserting a retaining pin (not shown) into the pin hole of the connecting pin 11, the rotor 2 can be detachably mounted on the axle.

  A hexagonal cylinder shaft 12 is provided at the center of the rotor shaft 4 on the left end side (the other end side). At the left end portion of the predetermined recess 4a in the rotor shaft 4, a bracket 13 having a connection hole 13a is erected.

  The rotor plate 3 extends toward the outside in the radial direction, and has a three-pointed star shape (an example of a substantially triangular shape) provided with three extending portions 3a positioned at equal intervals (120 degree intervals) in the circumferential direction. ). Each extending portion 3a is curved so as to be positioned on the right side (rotor shaft side) toward the extending end side. A hexagonal shaft 14 that is fitted into the hexagonal cylinder shaft 12 of the rotor shaft 4 is provided at the center of the rotor plate 3. On the outer peripheral side of the rotor plate 3, a connecting pin 15 inserted through the connecting hole 13 a of the rotor shaft 4 is provided so as to protrude rightward. A pin hole 15 a for inserting a retaining pin is formed in the protruding end of the connecting pin 15.

  Accordingly, the hexagonal shaft 14 of the rotor plate 3 is fitted into the hexagonal cylinder shaft 12 of the rotor shaft 4, and the connecting pin 15 of the rotor plate 3 is inserted into the connecting hole 13 a of the rotor shaft 4. By inserting a retaining pin (not shown) into the pin hole 15a, the rotor plate 3 can be detachably attached to the left end portion (the other end portion) of the rotor shaft 4.

  As shown in FIGS. 2 to 5, when the rotor plate 3 is attached to the left end portion of the rotor shaft 4, each extending portion 3 a is located near the rotor plate 3 in the axial direction of the rotor shaft 4. The three tiller claws 6 are positioned between the extended end portions 6a of the two tiller claws 6 in the circumferential direction of the rotor shaft 4 before the intermediate position between the extended end portions. The mounting posture in the circumferential direction with respect to the rotor shaft 4 is set so as to be positioned at a position close to the extended end portion 6a of the tilled nail 6.

  Further, in the axial direction with respect to the rotor shaft 4, each extending portion 3 a is the extension end side portion (grounding action portion) of the tilled claws 6 closest to the rotor plate 3 in the axial direction of the rotor shaft 4. Are set to overlap in the axial direction of the rotor shaft 4.

  The three tillable claws 5 that are separated from the rotor plate 3 in the axial direction of the rotor shaft 4 have their extended end portions 5 a in relation to the three extended portions 3 a of the rotor plate 3. It forms so that it may be located in the middle of the two extension parts 3a in the circumferential direction.

  Thereby, as shown in FIG. 5, at the time of the work which rotationally drives the tilling rotor 1, each extended end part 5a of each tilling nail | claw 5 and 6 located in the outer peripheral side of the tilling rotor 1 with the rotation is carried out. , 6a and each extending portion 3a of the rotor plate 3 act on the uncultivated land portions one after another while changing the respective ground heights in a state in which the operation periods for the uncultivated land portions are different. . As a result, it is possible to effectively reduce the vertical movement of the airframe during the work, and it is possible to effectively suppress a decrease in workability due to the vertical movement.

  In addition, after each of the extending portions 3a of the rotor plate 3 is cultivated by cultivating the tilled nail 6 that is preceded adjacently to the uncultivated land, the extending end 6a of the tilled nail 6 is extended. Immediately after plowing, the soft cultivated land is driven into the soft uncultivated land portion where the preceding cultivated claws 6 have been cultivated. Thereby, the impact at the time of each extension part 3a of the rotor plate 3 being driven into an uncultivated land part can be made small, and the fall of workability | operativity resulting from the impact can be suppressed.

  Therefore, the workability due to the impact when each extended portion 3a of the rotor plate 3 is driven into the uncultivated land portion is effectively suppressed while the deterioration in workability due to the vertical movement of the airframe during the work is effectively suppressed. As a result, excellent workability can be stably obtained.

[Second Embodiment]

  Hereinafter, a second embodiment, which is an example of the best mode for carrying out the present invention, will be described with reference to the drawings. In the second embodiment, the description of the same configuration as that of the first embodiment is omitted, and only the configuration of the configuration is described.

  FIG. 6 is an exploded perspective view of the left tilling rotor 1 in the second embodiment. FIG. 7 is a rear view of the left tilling rotor 1 in the second embodiment. 8 and 9 are left side views of the left tilling rotor 1 in the second embodiment.

  As shown in these drawings, the tilling rotor 1 is configured so that the specification can be changed between a three-claw specification with a narrow tillage width and a six-nail specification with a wide tillage width. Therefore, in this tilling rotor 1, the rotor shaft 4 is configured in a two-part structure that can be separated into a right half and a left half.

  The first rotor shaft portion 4A that forms the right half is provided with three tillers through U-shaped connecting portions 7 that are provided in every other recess 4a formed on each surface in the circumferential direction. The claws 5 are arranged at regular intervals (120 degree intervals) in the circumferential direction and at predetermined intervals in the axial direction. A cylindrical shaft 10 that is externally fitted to the axle (not shown) of the walking work machine is arranged at the center of the first rotor shaft portion 4A on the right end side. The mounting structure for the axle is the same as in the first embodiment.

  The second rotor shaft portion 4B that forms the left half is provided with three tillers through U-shaped connecting portions 7 that are provided in every other recess 4a formed on each surface in the circumferential direction. The claws 6 are arranged so as to be positioned at equal intervals (120 degree intervals) in the circumferential direction and at predetermined intervals in the axial direction. And the hexagonal cylinder axis | shaft 12 which accept | permits the internal fitting of the hexagonal axis | shaft 14 of the rotor plate 3 is arrange | positioned in the center part by the side of the left end part of this 2nd rotor axial part 4B. In addition, a bracket 13 having a connection hole 13a that allows the connection pin 15 of the rotor plate 3 to be inserted is erected at the left end portion of the predetermined recess 4a in the second rotor shaft portion 4B.

  A hexagonal cylinder shaft 17 having the same size as that of the hexagonal cylinder shaft 12 of the second rotor shaft portion 4B is disposed in the central portion on the left end side of the first rotor shaft portion 4A. A connection hole 13a drilled in the bracket 13 of the second rotor shaft portion 4B is connected to the left end of the predetermined recess 4a in the first rotor shaft portion 4A at the same distance from the center of the tilling rotor 1 and the same diameter. A bracket 18 having a hole (not shown) is provided upright.

  A hexagonal shaft 19 that is the same size as the hexagonal shaft 14 of the rotor plate 3 and is fitted in the hexagonal cylindrical shaft 17 of the first rotor shaft portion 4A is disposed at the center of the second rotor shaft portion 4B on the right end side. It is. At the right end portion of the predetermined recess 4a in the second rotor shaft portion 4B, an L-shaped connection pin 20 inserted through the connection hole of the first rotor shaft portion 4A extends toward the right side. It is deployed as follows. The connection pin 20 has the same diameter as the connection pin 15 of the rotor plate 3 and has a pin hole 20a for insertion of a retaining pin at the insertion end.

  As a result, the hexagonal shaft 19 of the second rotor shaft portion 4B is fitted into the hexagonal cylinder shaft 17 of the first rotor shaft portion 4A, and the connection of the second rotor shaft portion 4B to the connection hole of the first rotor shaft portion 4A. After the pin 20 is inserted, by inserting the retaining pin 21 into the pin hole 20a of the connecting pin 20, the second rotor shaft portion 4B can be detachably connected to the first rotor shaft portion 4A. After the hexagonal shaft 14 of the rotor plate 3 is fitted into the hexagonal cylindrical shaft 12 of the second rotor shaft portion 4B, and the connecting pin 15 of the rotor plate 3 is inserted into the connecting hole 13a of the second rotor shaft portion 4B. By inserting a retaining pin (not shown) into the pin hole 15a of the connecting pin 15, the rotor plate 3 can be detachably attached to the left end portion (the other end portion) of the second rotor shaft portion 4B.

  On the other hand, after the hexagonal shaft 14 of the rotor plate 3 is fitted into the hexagonal cylindrical shaft 17 of the first rotor shaft portion 4A and the connecting pin 15 of the rotor plate 3 is inserted into the connecting hole of the first rotor shaft portion 4A, By inserting a retaining pin into the pin hole 15a of the connecting pin 15, the rotor plate 3 can be detachably connected to the first rotor shaft portion 4A.

  That is, by directly connecting the rotor plate 3 to the first rotor shaft portion 4A, the tiller rotor 1 having a narrow three-claw specification can be configured, and the second rotor shaft portion 4B can be formed on the first rotor shaft portion 4A. By connecting the rotor plate 3 via, a tiller rotor 1 having a wide six-claw specification can be configured.

  The three tillage claws 5 of the first rotor shaft portion 4A and the three tillage claws 6 of the second rotor shaft portion 4B are connected to the first rotor shaft portion 4A and the second rotor shaft portion 4B. Then, these extended end portions 5 a and 6 a are formed so as to be positioned at equal intervals (60-degree intervals) in the circumferential direction of the rotor shaft 4.

  The connection hole of the first rotor shaft portion 4A and the connection hole 13a of the second rotor shaft portion 4B are set to have a rotation angle difference of 60 degrees in the circumferential direction of the rotor shaft 4.

  As shown in FIGS. 7, 8, and 10 (A), when the rotor plate 3 is attached to the left end portion of the second rotor shaft portion 4 </ b> B, each extending portion 3 a has a shaft of the rotor shaft 4. The extended end portions of the two tiller claws 6 in the circumferential direction of the rotor shaft 4 with respect to the three tiller claws 6 of the second rotor shaft portion 4B positioned near the rotor plate 3 in the central direction. 6a, the mounting posture in the circumferential direction with respect to the rotor 2 is set so that it is located at a position close to the extended end 6a of the tilled pawl 6 that precedes the intermediate position between the extended ends. It is.

  As shown in FIG. 9 and FIG. 10 (B), the rotor plate 3 is attached to the left end portion of the first rotor shaft portion 4A according to the above setting. The intermediate position between the extended end portions between the extended end portions 5a of the two tiller claws 5 in the circumferential direction of the rotor shaft 4 with respect to the three tilled claws 5 of the shaft portion 4A. It comes to be located in the position near the extension end part 5a of the tilled nail | claw 5 which precedes.

  Then, each of the extending portions 3a of the rotor plate 3 is in either the state where the rotor plate 3 is attached to the left end portion of the second rotor shaft portion 4B or the state where it is attached to the left end portion of the first rotor shaft portion 4A. Is set so as to overlap the extended end side portion (grounding action portion) of the tilled claws 6 closest to the rotor plate 3 in the axial direction of the rotor shaft 4 in the axial direction of the rotor shaft 4. is there.

  Thus, when the tilling rotor 1 is configured to have a wide six-claw specification, as shown in FIG. 10A, the tilling rotor 1 is positioned on the outer peripheral side as the tilling rotor 1 rotates. In the state where the extended end portions 5a, 6a of the cultivated nail claws 5, 6 and the extended portions 3a of the rotor plate 3 have different operating periods with respect to their uncultivated land portions, It will act on uncultivated land one after another while changing the height. As a result, it is possible to effectively reduce the vertical movement of the airframe during the work, and it is possible to effectively suppress a decrease in workability due to the vertical movement.

  In addition, after each of the extending portions 3a of the rotor plate 3 is cultivated by cultivating the tilled nail 6 that is preceded adjacently to the uncultivated land, the extending end 6a of the tilled nail 6 is extended. Immediately after plowing, the soft cultivated land is driven into the soft uncultivated land portion where the preceding cultivated claws 6 have been cultivated. Thereby, the impact at the time of each extension part 3a of the rotor plate 3 being driven into an uncultivated land part can be made small, and the fall of workability | operativity resulting from the impact can be suppressed.

  On the other hand, when the tilling rotor 1 is configured to have a narrow three-claw specification, as shown in FIG. 10 (B), the tilling rotor 1 is positioned on the outer peripheral side as the tilling rotor 1 rotates. While each extending end 5a of each cultivated nail 5 and each extending part 3a of the rotor plate 3 are different in their action periods with respect to their uncultivated land portions, the respective ground heights are changed. It will act on uncultivated land one after another. As a result, it is possible to effectively reduce the vertical movement of the airframe during the work, and it is possible to effectively suppress a decrease in workability due to the vertical movement.

  In addition, after each of the extending portions 3a of the rotor plate 3 is cultivated by cultivating the tilled nail 5 that is adjacent and adjacent to the uncultivated land, the extended end portion 5a of the tilled nail 5 is extended. Immediately after plowing, the soft cultivated land is driven into the soft uncultivated land portion where the preceding cultivated claws 5 have been cultivated. Thereby, the impact at the time of each extension part 3a of the rotor plate 3 being driven into an uncultivated land part can be made small, and the fall of workability | operativity resulting from the impact can be suppressed.

    [Another embodiment]

[1] As the tilling rotor 1, three tilling claws 5 are arranged on the substantially hexagonal rotor shaft 4 in a side view so as to be positioned at equal intervals (120 degree intervals) in the circumferential direction of the rotor shaft 4. Then, the rotor plate 3 is attached to the left end portion (the other end portion) of the rotor shaft 4, and each of the extending portions 3 a with respect to the three tilled claws 5 has two pieces in the circumferential direction of the rotor shaft 4. Attached between the extended end portions 5a of the tilled nail 5 so as to be positioned closer to the extended end portion 5a of the tilled nail 5 preceding the intermediate position between the extended end portions. It may be dedicated to the three-claw specification.

[2] As the tilling rotor 1 in the first embodiment, for example, three tilling pawls 5 positioned on the right half (one end side) of the rotor shaft 4 are extended from the rotor shaft 4. The extension end portion 5a of these tiller claws 5 is formed on the rotor half by forming the same so as to be the same as the three tiller claws 6 located on the left half (the other end side) of the rotor shaft 4. The three extending portions 3 a of the plate 3 may be configured so as not to be positioned between the two extending portions 3 a in the circumferential direction of the rotor shaft 4.

[3] The rotor shaft 4 may have a circular shape when viewed from the side, or may have a regular hexagonal shape when viewed from the side without the concave portion 4a.

[4] In the connection structure between the rotor shaft 4 and the rotor plate 3 in the first embodiment, a cylindrical shaft is adopted instead of the hexagonal cylindrical shaft 12, and a round shaft is adopted instead of the hexagonal shaft 14. Also good. Further, in the connection structure of the first rotor shaft portion 4A, the second rotor shaft portion 4B and the rotor plate 3 in the second embodiment, a cylindrical shaft is employed instead of the hexagonal cylinder shafts 12 and 17, and the hexagon shaft 14 , 19 may be replaced with a round shaft.

  When a cylindrical shaft and a round shaft are employed in the connecting structure of the first rotor shaft portion 4A, the second rotor shaft portion 4B, and the rotor plate 3 in the second embodiment, the rotor plate 3 is used as the first rotor shaft portion 4A. Are directly connected to each other, each extending portion 3a of the rotor plate 3 has two tilled claws 5 in the circumferential direction of the rotor shaft 4 with respect to the three tilled claws 5 of the first rotor shaft portion 4A. 5 between the extended end portions 5a, and is located at a position close to the extended end portion 5a of the tilled pawl 5 preceding the intermediate position between the extended end portions, and the first rotor shaft In a state in which the rotor plate 3 is coupled to the portion 4A via the second rotor shaft portion 4B, each extending portion 3a of the rotor plate 3 is located near the rotor plate 3 in the axial direction of the rotor shaft 4. The circumferential direction of the rotor shaft 4 with respect to the three tillage claws 6 of the rotor shaft portion 4B Between the extended end portions 6a of the two tillable claws 6 in the position between the extended end portions 6a of the tillable claws 6 preceding the intermediate position between the extended end portions, In addition, the three tillable claws 5 that are separated from the rotor plate 3 in the axial direction of the rotor shaft 4 have their extended end portions 5 a with respect to the three extended portions 3 a of the rotor plate 3. 4, the connecting hole 18 a (bracket 18) of the first rotor shaft portion 4 </ b> A and the connecting hole 13 a (bracket 13) of the second rotor shaft portion 4 </ b> B so as to be positioned in the middle of the two extending portions 3 a in the circumferential direction of 4. ) Can be arranged and set so as to have a rotation angle difference of a predetermined angle in the circumferential direction of the rotor shaft 4.

[5] The rotor plate 3 has a substantially triangular shape including three extending portions 3a extending outward in the radial direction and positioned at equal intervals (120 degree intervals) in the circumferential direction. If there is, for example, as shown in (A) of FIG. 11, the adjacent two extending portions 3 a may be connected by a straight line, and as shown in (B) of FIG. 11, The thing of the shape connected with the curve which curved so that two adjacent extension parts 3a may bulge outward may be sufficient.

Exploded perspective view of a left tillage rotor in the first embodiment Rear view of left tillage rotor in the first embodiment Left side view of left tillage rotor in the first embodiment Right side view of a left tillage rotor in the first embodiment The figure which shows the ground action period of the extension edge part of the tilled nail | claw in 1st Embodiment, and the extension part of a rotor plate. Exploded perspective view of a left tillage rotor in the second embodiment Rear view of left tillage rotor in the second embodiment Left side view of a tilling rotor with left six-claw specification in the second embodiment Left side view of a tilling rotor with left three-claw specification in the second embodiment The figure which shows the ground action period of the extension edge part of the tilled nail | claw in 2nd Embodiment, and the extension part of a rotor plate. Left side view showing the shape of the rotor plate in another embodiment

Explanation of symbols

DESCRIPTION OF SYMBOLS 3 Rotor plate 3a Extension part 4 Rotor axis | shaft 5 Tillage nail | claw 5a Extension end part 6 Tillage nail | claw 6a Extension end part

Claims (2)

The rotor shaft that has one end connected to the axle of the walking type work machine has three tilled claws extending outward from the rotor shaft so as to be positioned at equal intervals in the circumferential direction of the rotor shaft. Deploy,
A substantially triangular rotor plate including three extending portions extending outward in the radial direction and positioned at equal intervals in the circumferential direction;
The three extending portions are extended between the extending end portions of the two tillering claws in the circumferential direction, and the extending end portion of the tilling nail preceding the intermediate position between the extending end portions. An axle-driven tillage rotor, wherein the rotor plate is attached to the other end of the rotor shaft so as to be positioned at a position close to the rotor shaft. Three tiller claws positioned at equal intervals in the circumferential direction of the rotor shaft in the same manner as the tiller claws at a position closer to the one end of the rotor shaft than the three tiller claws. Equipped,
2. The three tilled claws on the one end side are equipped so that their extending end portions are positioned between the two extending portions in the circumferential direction. An axle-driven tillage rotor as described in 1.

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