JP7055757B2 - Weeding equipment and weeding rotor - Google Patents

Description

The present invention relates to a weeding device and a weeding rotor.

Conventionally, the weeding apparatus disclosed in Patent Document 1 is known.
The weeding device disclosed in Patent Document 1 has a rotating shaft protruding to the left and right from a power transmission unit to which power from a prime mover is transmitted. In addition, weeding rotors are provided on the left and right sides of the power transmission unit. The weeding rotor weeds the grass on the ground by rotating integrally with the rotating shaft.

Japanese Patent Application Laid-Open No. 8-187006

By the way, it is considered to attach another herbicide rotor (sub-herbicide rotor) to the side of the herbicide rotor. If this sub-herbicide rotor is mounted with bolts and nuts, there is a problem that it is troublesome and troublesome to mount the sub-herbicide rotor.
Therefore, in view of the above problems, it is an object of the present invention to provide a weeding device and a weeding rotor to which a sub-weeding rotor can be easily attached.

The weeding device according to one aspect of the present invention includes a machine frame, a rotating shaft rotatably supported by the machine frame, a main weeding rotor that rotates together with the rotating shaft to weed grass on the ground, and the rotating shaft. A weeding rotor having a sub-weeding rotor arranged side by side with the main weeding rotor in the axial direction of the above, and one of the main weeding rotor and the sub-weeding rotor, the insertion hole and the insertion hole. An engaging hole having an engaging groove extending in the circumferential direction of the weeding rotor, provided on the other side of the main weeding rotor and the sub-weeding rotor, and provided on a shaft portion and an end portion of the shaft portion. It comprises an engaging pin having a head that can be inserted into and removed from the insertion hole, and the shaft portion is located in the insertion hole with the head passed through the insertion hole, and in that state. By rotating the sub-weeding rotor with respect to the main weeding rotor, the wall portion is inserted into the engaging groove and abuts on the end portion of the engaging groove, and the shaft portion forms the engaging hole. It has a regulating portion that regulates the sub-weeding rotor from being separated from the main weeding rotor by engaging the head in a state of being in contact with the end of the engaging groove.

Further, a plurality of the engaging holes are formed on the circumference centered on the axis of the rotating shaft, and the engaging grooves of the engaging holes are formed in an arc shape centered on the axis of the rotating shaft. A plurality of engaging pins are provided on a circumference having the same diameter as the circumference centered on the axis of the rotating shaft and centered on the axis of the rotating shaft.
Further, the rotation axis can be selectively rotated in the first direction and the second direction opposite to the first direction, and the engagement groove is from the insertion hole to the first direction. It includes a first groove extending in the opposite direction and a second groove extending from the insertion hole in the direction opposite to the second direction.

Further, the main weeding rotor has a support shaft that is concentrically arranged on the rotation shaft and rotates integrally with the rotation shaft, and an outer member fixed to the outer end side of the support shaft, and the sub-weeding rotor. The rotor has an inner member that is superposed on the outer member, the engagement hole is formed in the outer member, and the engagement pin is fixed to the inner member.
Further, it is provided with a fixing tool for fastening the outer member and the inner member without a tool.

Further, the sub-herbicide rotor rotates concentrically with the main herbicide rotor and is formed to have a diameter smaller than the diameter of the main herbicide rotor.
Further, the sub-weeding rotor can weed the upper part of the hem portion in a state where the main weeding rotor is located on the side of the hem portion which is the end side in the width direction of the mulch film laid on the ridge. ..

Further, the sub-herbicide rotor has a first sub-rotor provided on one side of the main herbicide rotor and a second sub-rotor provided on the other side of the main herbicide rotor.
The weeding rotor according to one aspect of the present invention is arranged side by side with the main weeding rotor having a support shaft and a mowing blade provided around the support shaft and the main weeding rotor in the axial direction of the support shaft. A sub-mowing rotor that is different from the mowing blade and has a mowing blade provided around an extension of the axis of the support shaft, and one of the main weeding rotor and the sub-weeding rotor. An engagement hole having an insertion hole, an engagement groove extending from the insertion hole in the circumferential direction about the support shaft, and the other of the main weeding rotor and the sub weeding rotor. The shaft portion comprises an engaging pin provided at the end portion of the shaft portion and having a head that can be inserted into and removed from the insertion hole, and the shaft portion has the head portion in the insertion hole. It is located in the insertion hole in the passed state, and in this state, the sub-mowing rotor is rotated with respect to the main weeding rotor to be inserted into the engaging groove and abutted at the end of the engaging groove. The wall portion forming the engaging hole is engaged with the head portion in a state where the shaft portion is in contact with the end portion of the engaging groove, and the sub weeding rotor is separated from the main weeding rotor. Has a regulatory department that regulates.

Further, a plurality of the engaging holes are formed on the circumference centered on the axis of the support shaft, and the engaging grooves of the engaging holes are formed in an arc shape centered on the axis of the support shaft. A plurality of engaging pins are provided on a circumference having the same diameter as the circumference centered on the axis of the support shaft and centered on the axis of the support shaft.
The main weeding rotor can selectively rotate in a first direction and a second direction opposite to the first direction, and the engaging groove is opposite to the first direction from the insertion hole. It includes a first groove extending in a direction and a second groove extending from the insertion hole in a direction opposite to the second direction.

The main weeding rotor has an outer member fixed to the outer end side of the support shaft, the sub-herbicide rotor has an inner member superimposed on the outer member, and the engaging hole is the outer side. The engaging pin is formed on the member and is fixed to the inner member.
It is provided with a fixture for fastening the outer member and the inner member without tools.
The sub-herbicide rotor rotates concentrically with the main herbicide rotor and is formed to have a diameter smaller than the diameter of the main herbicide rotor.

According to the above configuration, by rotating the sub weeding rotor with respect to the main weeding rotor with the head of the engaging pin passed through the insertion hole of the engaging hole, the shaft portion becomes the end of the engaging groove. The rotational force can be transmitted from the main weeding rotor to the sub-weeding rotor in contact with the main weeding rotor, and the head engages with the regulating portion to regulate the sub-weeding rotor from separating from the main weeding rotor. That is, the sub-herbicide rotor can be easily mounted by simply rotating the sub-herbicide rotor with respect to the main herbicide rotor.

It is a side view of a tractor with a weeding device attached. It is a side view of the weeding device. It is a rear view of the weeding device. It is a rear view of the state where the sub-herbicide rotor is attached to the main herbicide rotor. It is an exploded perspective view which looked at the main weeding rotor and the sub weeding rotor from the left side of the back. It is a side view of the joint part of the main weeding rotor and the sub weeding rotor seen from the inside of the machine. It is a perspective view which looked at the main weeding rotor from the left side of the back. It is a rear view of the main weeding rotor. It is a side view of the main weeding rotor seen from the outside of the machine body. It is an enlarged side view of the engaging hole and the long hole. It is a rear view of a sub-weeding rotor. It is a perspective view which looked at the sub-weeding rotor from the right side of the back. It is a perspective view which looked at the sub-weeding rotor from the left side of the back. It is a side view of a sub-herbicide rotor as seen from the inside of the machine. It is an enlarged side view of an engagement pin and a through hole. It is a rear view exploded perspective view which shows the fastening by a fixture. It is a perspective view which looked at the joint part of the main weeding rotor and the sub weeding rotor from the front right side. It is a perspective view which looked at the joint part of the main weeding rotor and the sub weeding rotor from the front right side. It is a back sectional view of the engaging part of the engaging hole and the engaging pin. It is a side view which looked at the engaging part of the engaging hole and the engaging pin from the outside of the machine body. It is a rear view which showed the case which weed the side of the ridge where the mulch film was laid.

Hereinafter, an embodiment of the present invention will be described with reference to the drawings as appropriate.
FIG. 1 is a side view showing a state in which a weeding device 1 is attached to a tractor (traveling vehicle) 2 exemplified as a traveling body. FIG. 2 is a side view of the weeding device 1. FIG. 3 is a rear view of the weeding device 1.
In the present embodiment, the direction of arrow A1 (forward direction of tractor 2) in FIGS. 1 and 2 is forward, the direction of arrow A2 in FIGS. 1 and 2 (backward direction of tractor 2) is backward, and FIGS. 1 and 2 are shown. The direction of the arrow K1 will be described as the front-back direction. Therefore, the front side of FIGS. 1 and 2 is to the left (see the direction of arrow B1 in FIG. 3), and the back side of FIGS. 1 and 2 is to the right (see the direction of arrow B2 in FIG. 3).

Further, the horizontal direction (vehicle width direction of the tractor 2) orthogonal to the front-rear direction K1 will be described as the body width direction K2 of the weeding device 1. Further, the direction from the central portion to the right portion or the left portion of the machine body width direction K2 in the weeding device 1 will be described as the outside of the machine body. In other words, the outside of the machine body is the direction away from the center in the width direction of the weeding device 1 in the body width direction K2. In addition, the direction opposite to the outside of the aircraft will be described as the inside of the aircraft. In other words, the inside of the machine is the direction K2 in the width direction of the machine and is closer to the center in the width direction of the weeding device 1.

As shown in FIG. 1, the tractor 2 includes a vehicle body 3 having an engine (motor) 3A and a mission case 3B. The front portion of the vehicle body 3 is supported by the front wheels 4, and the rear portion of the vehicle body 3 is supported by the rear wheels 5. That is, the tractor 2 has a wheel-type traveling device having a front wheel 4 and a rear wheel 5. The traveling device may be a semi-crawler type traveling device having a crawler type traveling mechanism mounted instead of the rear wheel, or may be a full crawler type traveling device.

The power of the engine 3A is transmitted to the power transmission device in the mission case 3B, and the front wheels 4 and the rear wheels 5 are rotationally driven by the power transmitted to the power transmission device. A driver's seat 6 is mounted on the rear portion of the vehicle body 3. A steering wheel 7 for steering and operating the tractor 2 is provided in front of the driver's seat 6. A PTO shaft (output shaft) is provided at the rear of the vehicle body 3 so as to project rearward. The power of the power transmission mechanism in the mission case 3B can be taken out from this PTO shaft. The weeding device 1 is mounted on the rear portion of the vehicle body 3 so as to be able to move up and down via a mounting mechanism such as a three-point link mechanism or a two-point link mechanism. Further, the weeding device 1 is raised and lowered by a hydraulic device mounted on the tractor 2. Power is transmitted to the weeding device 1 from the PTO shaft. That is, the weeding device 1 is driven by the power of the engine (motor) 3A of the tractor 2.

As shown in FIGS. 2 and 3, the weeding device 1 has a machine frame 8 mounted on the tractor 2. The machine frame 8 includes a power transmission unit 9 in which power is transmitted from the PTO axis of the tractor 2. The power transmission unit 9 has a gear case 12, a PIC shaft (input shaft) 11, a transmission case 13, and a transmission mechanism 14.
The gear case 12 is arranged at the center of the weeding device 1 in the body width direction K2. The PIC shaft 11 is provided on the gear case 12 so as to project toward the front side. The PIC shaft 11 is connected to the PTO shaft via a drive shaft having a universal joint, and inputs power from the tractor 2 into the gear case 12. The transmission case 13 is provided so as to project downward from the gear case 12. The inside of the transmission case 13 communicates with the inside of the gear case 12.

The transmission mechanism 14 is provided from the inside of the gear case 12 to the inside of the transmission case 13. The transmission mechanism 14 has a transmission shaft 15 provided in the gear case 12. The transmission shaft 15 is supported by the gear case 12 so as to be rotatable around the axis in the width direction K2 of the machine body and movably movable in the direction of the axis.
Further, the transmission mechanism 14 has a first transmission unit 16 that transmits the power transmitted to the PIC shaft 11 to the transmission shaft 15. The first transmission unit 16 is configured by a bevel gear transmission mechanism, and has a first gear 16A, a second gear 16B, and a third gear 16C. The first gear 16A rotates integrally with the PIC shaft 11. The second gear 16B and the third gear 16C mesh with the first gear 16A.

By moving the transmission shaft 15 in the axial direction, the transmission shaft 15 rotates integrally with the second gear 16B and rotates relative to the third gear 16C, and rotates integrally with the third gear 16C and rotates relative to the second gear 16B. It is possible to switch to the state of That is, the power transmission path of the transmission mechanism 14 can be switched by the movement of the transmission shaft 15 in the axial direction. Specifically, the first path for transmitting the power transmitted to the PIC shaft 11 to the transmission shaft 15 via the first gear 16A and the second gear 16B by moving the transmission shaft 15 in the axial direction, and the first path. It is possible to switch to the second path transmitted to the transmission shaft 15 via the 1st gear 16A and the 3rd gear 16C.

Further, the transmission mechanism 14 has a second transmission unit 17 that transmits the power transmitted to the transmission shaft 15 to the lower portion 13a of the transmission case 13. The second transmission portion 17 is wound around the first sprocket 17A that rotates integrally with the transmission shaft 15, the second sprocket 17B arranged in the lower portion 13a of the transmission case 13, and the first sprocket 17A and the second sprocket 17B. It has a chain 17C.

As shown in FIG. 3, the weeding device 1 has a rotating shaft 18 rotatably supported by the machine frame 8. Specifically, the rotary shaft 18 has an axial center Y1 extending in the width direction K2 of the machine body, and is rotatably supported around the axial center by the lower portion 13a (lower portion of the power transmission unit 9) of the transmission case 13. A second sprocket 17B is attached to the rotating shaft 18. Therefore, the power transmitted to the PIC shaft 11 is transmitted to the rotating shaft 18 via the transmission mechanism 14, and the rotating shaft 18 rotates. In other words, the rotating shaft 18 is driven by the power of the tractor 2.

The rotary shaft 18 is provided so as to project from the transmission case 13 (power transmission unit 9) to one side (left side) and the other side (right side) of the machine body width direction K2. Specifically, the rotating shaft 18 has a first shaft portion 18a protruding to the left from the transmission case 13 and a second shaft portion 18b protruding to the right from the transmission case 13. The first shaft portion 18a and the second shaft portion 18b are rotatably supported by a bearing 26 provided in the lower part of the transmission case 13.

The rotating shaft 18 does not have to be composed of one shaft member, and may be composed of a plurality of shaft members. For example, the transmission case 13 may be formed of a shaft member projecting to the left and a shaft member projecting to the right.
As shown in FIG. 3, the weeding device 1 has a mowing portion 19 provided at the lower part of the machine frame 8. The mowing section 19 has a weeding rotor 21 that rotates together with the rotating shaft 18 to weed the grass G2 on the ground (on the ground G1). The weeding rotor 21 extends in the axial direction (direction along the axial center Y1) of the rotating shaft 18. As shown in FIG. 2, the weeding rotor 21 rotates around the axis Y1 of the rotating shaft 18 in the first direction (rotational direction) indicated by the arrow X1 or in the second direction (rotational direction) indicated by the arrow X2, and is a tractor. Weed the grass G2 on the ground while moving forward by 2. The weeding device 1 may be a weeding device in which the weeding rotor 21 rotates only in the first direction X1.

The rotation direction of the weeding rotor 21 and the rotating shaft 18 is switched by the transmission shaft 15. For example, when the power transmission path of the transmission mechanism 14 is switched to the first path, the weeding rotor 21 and the rotating shaft 18 rotate in the first direction X1 (normal rotation direction), and when switching to the second path, the weeding rotor 21 and the rotating shaft 18 rotates in the second direction X2 (reverse direction). That is, the weeding rotor 21 and the rotation shaft 18 can selectively rotate in the first direction X1 and the second direction X2 in the direction opposite to the first direction X1.

As shown in FIG. 3, the weeding rotor 21 is arranged side by side with the main weeding rotor 22 that rotates together with the rotating shaft 18 to weed the grass G2 on the ground and the main weeding rotor 22 in the axial direction of the rotating shaft 18 and is the main. It includes a sub-weeding rotor 23 that rotates together with the weeding rotor 22. In the present embodiment, the sub weeding rotor 23 is a weeding rotor that weeds grass above the lower end of the main weeding rotor 22.

As shown in FIGS. 3 to 6, the main weeding rotor 22 includes a first main rotor 22L and a second main rotor 22R. The first main rotor 22L and the second main rotor 22R are arranged side by side in the axial direction of the rotating shaft 18. Specifically, the first main rotor 22L is arranged on the left side of the transmission case 13 (power transmission unit 9), and is integrally rotatably attached to the first shaft portion 18a. The second main rotor 22R is arranged on the right side of the transmission case 13, and is integrally rotatably attached to the second shaft portion 18b.

As shown in FIGS. 4 and 5, the main weeding rotor 22 (first main rotor 22L, second main rotor 22R) is composed of a cage-shaped rotor, and the outer shape rotated around the rotation shaft 18 is the airframe. It exhibits a columnar shape having an axial center extending in the width direction K2.
As shown in FIGS. 3 and 7 to 9, the first main rotor 22L has a support shaft 24 connected to the rotating shaft 18 and a mowing blade (referred to as a first mowing blade) provided around the support shaft 24. ) 25 and. Similarly, the second main rotor 22R also has a support shaft 24 and a mowing blade (first mowing blade) 25 provided around the support shaft 24.

The support shaft 24 is concentrically connected to the rotation shaft 18. Specifically, the support shaft 24 is formed in a tubular shape having an axial center Y2 extending in the machine width direction K2, is arranged concentrically with the rotary shaft 18, and is fitted to the outside of the rotary shaft 18. As shown in FIGS. 4 and 8, the support shaft 24 has an axial center Y2 extending in the machine width direction K2, and as shown in FIG. 3, in a state where the support shaft 24 is connected to the connecting shaft 18, the shaft is a shaft. The center Y2 coincides with the axis Y1. Further, the support shaft 24 is connected to the rotating shaft 18 by a fixing tool such as a bolt, and rotates integrally with the rotating shaft 18.

As shown in FIGS. 7 and 8, the first mowing blade 25 is spirally provided around the support shaft 24. Further, a plurality of first mowing blades 25 are provided. It is sufficient that at least one first mowing blade 25 is provided. The first mowing blade 25 is provided over an inner frame member 28 provided on the inner side of the first main rotor 22L and an outer frame member 29 provided on the outer side of the machine. The inner frame member 28 and the outer frame member 29 are formed in a ring shape by a rod material such as a pipe material. Further, the inner frame member 28 and the outer frame member 29 are formed to have the same diameter and are concentric with the axis Y2 of the support shaft 24 (the axis Y1 of the rotation shaft 18).

The inner frame member 28 is connected to the support shaft 24 by a plurality of rods 61 extending from the end portion of the support shaft 24 on the machine body side toward the inner frame member 28. Further, a reinforcing plate 62 for reinforcing the plurality of rods 61 is fixed to the end of the support shaft 24 on the side of the machine body.
The first main rotor 22L has an end plate (outer member) 63 provided on the outer side of the machine body of the first main rotor 22L. The end plate 63 is fixed to the end of the support shaft 24 on the outer side of the machine body. The outer frame member 29 is fixed to the end plate 63. Specifically, the end plate 63 is arranged inside the outer frame member 29, and the central portion 63a (wall portion) located on the center side of the outer frame member 29 is fixed to the end portion of the support shaft 24. Further, the end plate 63 has a plurality of connecting portions 63b extending radially from the central portion 63a toward the outer frame member 29. The outer end portion (end portion in the extending direction) of each connecting portion 63b is fixed to the outer frame member 29.

Similarly, the second main rotor 22R has an inner frame member 28, an outer frame member 29, an end plate (outer member) 63, a plurality of rod members 61, and a reinforcing plate 62, and is configured in the same manner as the first main rotor 22L. To. Further, the following configuration is also similarly configured by the first main rotor 22L and the second main rotor 22R.
As shown in FIG. 9, a plurality of engaging holes 64 and a plurality of elongated holes 65 are formed in the central portion 63a of the end plate 63. In the present embodiment, the plurality of engaging holes 64 and the plurality of elongated holes 65 are formed by three each. As shown in FIG. 10, the plurality of engaging holes 64 and the plurality of elongated holes 65 are formed on the same circumference F1 centered on the axis Y2 of the support shaft 24 (the axis Y1 of the rotating shaft 18). There is. The plurality of engaging holes 64 are formed at equal intervals in the circumferential direction E1 (circumferential direction centered on the axial center Y1 and the axial center Y2) of the weeding rotor 21. The plurality of elongated holes 65 are formed at equal intervals in the circumferential direction E1, and are formed one by one between two engaging holes 64 adjacent to each other in the circumferential direction E1. Specifically, the slotted hole 65 is formed in the central portion between the adjacent engaging holes 64.

As shown in FIG. 10, each engaging hole 64 has an insertion hole 66 and an engaging groove 67 extending from the insertion hole 66 in the circumferential direction E1. The insertion hole 66 is formed in a hole having a diameter larger than the groove width of the engaging groove 67. Further, the insertion hole 66 and the engaging groove 67 are formed in a continuous manner. The engaging groove 67 is formed in an arc shape centered on the axis Y1 (axis Y2). The engaging groove 67 includes a first groove 67a extending from the insertion hole 66 in the direction opposite to the first direction X1, and a second groove 67b extending from the insertion hole 66 in the direction opposite to the second direction X2.

As shown in FIG. 20, the peripheral portion of the first groove 67a and the second groove 67b is a restricting portion 63c to which the head 70a of the engagement pin 70, which will be described later, engages. That is, the central portion 63a, which is the wall portion forming the engaging hole 64, has the restricting portion 63c with which the head 70a is engaged.
Each slot 65 is a hole extending in the circumferential direction E1 (long in the circumferential direction E1). The length of the elongated hole 65 in the circumferential direction E1 is formed to be substantially the same as the length of the engaging hole 64 in the circumferential direction E1.

As shown in FIG. 3, the rotor diameter D1 of the first main rotor 22L and the rotor diameter D2 of the second main rotor 22R are formed to have the same diameter. The rotor diameter means the diameter of a circle which is a rotation locus of a cage rotor. That is, the rotor diameter D1 is the diameter of the first main rotor 22L, and the rotor diameter D2 is the diameter of the second main rotor 22R.
As shown in FIG. 3, the sub-herbicide rotor 23 is provided on one side (left side) of the main herbicide rotor 22 and on the other side (right side) of the main herbicide rotor 22. Also includes a second subrotor 23R. Specifically, the first sub-rotor 23L is arranged side by side in the axial direction of the rotation shaft 18 (the axial direction of the support shaft 24) on the left side of the first main rotor 22L. The first sub-rotor 23L is mounted on the first main rotor 22L and rotates integrally with the first main rotor 22L in a concentric manner. The second sub-rotor 23R is arranged side by side in the axial direction of the rotating shaft 18 (the axial direction of the support shaft 24) on the right side of the second main rotor 22R. The second sub-rotor 23R is mounted on the second main rotor 22R and rotates integrally with the second main rotor 22R in a concentric manner.

The sub-weeding rotor 23 (first sub-rotor 23L, second sub-rotor 23R) is composed of a cage-shaped rotor, and has a columnar shape having an axial center whose outer shape rotated around the axial center extends in the machine width direction K2. Present.
As shown in FIGS. 3 to 6 and 11 to 13, the first sub-rotor 23L includes a plate member (inner member) 68 superposed on the end plate 63 of the first main rotor 22L and a plate member (inner member). A ring-shaped end frame 30 arranged at intervals outside the body of 68, and a mowing blade (referred to as a second mowing blade) 31 provided around an extension line of the axial center Y1 (axial center Y2). Has. Similarly, the second sub-rotor 23R has a plate member (inner member) 68, an end frame 30, and a mowing blade (second mowing blade) 31, and is configured in the same manner as the first sub-rotor 23L.

The plate member 68 is formed in a disk shape having a smaller diameter than the outer frame member 29 of the first main rotor 22L.
The second mowing blade 31 is spirally provided around an extension line of the axis Y1 (axis Y2). Further, the second mowing blade 31 is provided over the end frame 30 and the outer peripheral portion of the plate member 68. Therefore, the end frame 30 and the plate member 68 are connected by the second mowing blade 31. A plurality of second mowing blades 31 are provided. It is sufficient that at least one second mowing blade 31 is provided.

As shown in FIGS. 12 to 14, a circular opening hole 69 is formed on the center side of the plate member 68. The opening hole 69 has a diameter larger than the shaft diameter of the support shaft 24, and is located at a position corresponding to the outer end of the support shaft 24 when the plate member 68 is superposed on the end plate 63. The plate member 68 is formed with a plurality of engaging pins 70 and a plurality of through holes 71 around the opening hole 69.

As shown in FIG. 15, the plurality of engaging pins 70 and the plurality of through holes 71 are formed on the same circumference F2 centered on the axis Y1 of the rotating shaft 18 (the axis Y2 of the support shaft 24). There is. The circumference F2 is a circumference having the same diameter as the circumference F1. In the present embodiment, the plurality of engaging pins 70 and the plurality of through holes 71 are each provided by three. The plurality of engaging pins 70 are provided at equal intervals in the circumferential direction E1 of the weeding rotor 21. The plurality of through holes 71 are formed at equal intervals in the circumferential direction E1, and are formed one by one between two adjacent engaging pins 70 in the circumferential direction E1. Specifically, the through hole 71 is formed in the central portion between the adjacent engaging pins 70.

As shown in FIGS. 11 and 19, each engaging pin 70 has a shaft portion 70b and a head portion 70a provided at an end portion of the shaft portion 70b.
As shown in FIG. 19, the shaft portion 70b penetrates the plate member 68 and is fixed to the plate member 68 by welding or the like. Further, the shaft portion 70b protrudes from the plate member 68 toward the inside of the machine. As shown in FIG. 20, the shaft diameter (shaft diameter) of the shaft portion 70b is substantially the same as the groove width of the engaging groove 67 and can be inserted into the engaging groove 67 (movable in the engaging groove 67). It is formed to the dimensions.

As shown in FIG. 19, the head 70a is fixed to the end of the shaft portion 70b on the side of the machine body.
As shown in FIG. 20, the head 70a is formed to have a diameter larger than the shaft diameter of the shaft portion 70b and a diameter slightly smaller than the insertion hole 66. Therefore, the head 70a can be inserted / removed from the insertion hole 66 by moving the sub-weeding rotor 23 (first sub-rotor 23L, second sub-rotor 23R) in the body width direction K2. Further, as shown in FIG. 19, the shaft portion 70b is located in the insertion hole 66 with the head portion 70a passed through the insertion hole 66.

As shown in FIG. 19, the distance H1 between the head 70a and the plate member 68 is substantially the same as the plate thickness of the end plate 68, and the machine of the end plate 63 with the head 70a passing through the insertion hole 66. It is formed to a size that allows it to move toward the inside of the body.
As shown in FIG. 15, each through hole 71 is formed in a circular hole.
As shown in FIG. 4, the weeding rotor 21 has a fixture 72 for fastening the end plate (outer member) 63 and the plate member (inner member) 68 without tools (without using a tool such as a spanner or a wrench). .. In this embodiment, the fixture 72 is composed of a wing bolt 72A and a wing nut 72B. The end plate 63 and the plate member 68 are fastened by inserting the wing bolt 72A into the elongated hole 65 and the through hole 71 and screwing the wing nut 72B into the wing bolt 72A. As a result, the sub-herbicide rotor 23 is prevented from rotating with respect to the main herbicide rotor 22. Specifically, the first sub-rotor 23L is derotated with respect to the first main rotor 22L, and the second sub-rotor 23R is detented with respect to the second main rotor 22R. Although three fixtures 72 are provided in this embodiment, one or two fixtures 72 may be provided, or four or more fixtures 72 may be provided.

The rotor diameter (diameter) D3 of the first sub-rotor 23L and the rotor diameter (diameter) D4 of the second sub-rotor 23R are formed to have the same diameter. The rotor diameter D3 and the rotor diameter D4 are formed to have diameters smaller than the rotor diameter D1 and the rotor diameter D2. Therefore, the sub-mowing rotor 23 weeds the grass above the lower end of the main weeding rotor 22. In other words, a step 32 is provided between the lower end of the main weeding rotor 22 and the lower end of the sub weeding rotor 23.

In the present embodiment, a plurality of engaging holes 64 are formed in the end plate (outer member) 63, and a plurality of engaging pins 70 are provided in the plate member (inner member) 68, but a plurality of engaging pins 70 are provided in the end plate 63. The engaging pin 70 may be provided and a plurality of engaging holes 64 may be formed in the plate member 68. That is, the main weeding rotor 22 and the sub-weeding rotor 23 have a plurality of engaging holes 64 on one side and a plurality of engaging pins 70 on which the other engages with each engaging hole 64.

Next, a procedure for mounting (connecting) the sub-herbicide rotor 23 to the main herbicide rotor 22 will be described.
In the mounting procedure described below, a case where the first sub-rotor 23L is mounted on the first main rotor 22L will be described with reference to FIGS. 17 to 20, and a case where the second sub-rotor 23R is mounted on the second main rotor 22R. Since the procedure is the same as the procedure for mounting the first sub-rotor 23L to the first main rotor 22L, the description thereof will be omitted.

17 to 20 show a procedure for mounting the first sub-rotor 23L on the first main rotor 22L when the weeding rotor 21 is rotated in the first direction X1. 17 and 18 are perspective views of the joint portion between the first main rotor 22L and the first sub-rotor 23L as viewed from the front right side. Further, FIG. 19 shows a rear sectional view of an engaging portion between the engaging hole 64 and the engaging pin 70, and FIG. 20 shows the engaging portion between the engaging hole 64 and the engaging pin 70 from the outside of the machine body. The side view seen is shown.

First, as shown in FIG. 17, the first sub-rotor 23L is arranged on the side of the first main rotor 22L so that the plate member 68 faces the end plate 63 in the machine width direction K2.
Next, the first sub-rotor 23L is brought close to the first main rotor 22L, and as shown in the figure on the right side of FIG. 18, the head 70a of the engaging pin 70 is inserted into and passed through the insertion hole 66 of the engaging hole 64. (See the virtual line in FIG. 19). When the head 70a is passed through the insertion hole 66, the plate member 68 is superposed on the end plate 63 as shown in FIG. As shown in FIGS. 19 and 20, the shaft portion 70b is located in the insertion hole 66 when the head 70a is passed through the insertion hole 66. Further, in a state where the head 70a is passed through the insertion hole 66, the through hole 71 is located at the central portion of the elongated hole 65 in the longitudinal direction.

Next, from the state where the head 70a is passed through the insertion hole 66, as shown in FIG. 18, the first sub-rotor 23L is in the direction opposite to the first direction X1 which is the rotation direction with respect to the first main rotor 22L. Rotate in the direction of arrow X3 in FIGS. 18 and 20. Then, as shown in FIGS. 19 and 20, the shaft portion 70b is inserted into the first groove 67a and abuts on the end portion 64a of the first groove 67a (engagement groove) (see the figure on the left side of FIG. 18). ). As a result, the rotational force can be transmitted from the first main rotor 22L to the first sub-rotor 23L. That is, as the first main rotor 22L rotates in the first direction X1, the end portion 64a of the first groove 67a pushes the shaft portion 70b, thereby powering the first main rotor 22L to the first sub rotor 23L. Is transmitted, and the first sub-rotor 23L rotates integrally with the first main rotor 22L. The same applies to the case of the second sub rotor and the second main rotor.

As shown in FIG. 20, when the shaft portion 70b is in contact with the end portion 64a of the first groove 67a, the head portion 70a engages with the regulation portion 63c. By engaging (contacting) the head 70a with the regulating portion 63c, it is regulated that the first sub-rotor 23L (sub-herbicide rotor 23) separates from the first main rotor 22L (main weeding rotor 22).
On the other hand, in a state where the shaft portion 70b is in contact with the end portion 64a of the first groove 67a, the through hole 71 is located at the end portion of the elongated hole 65, and the plate member 68 is provided by the wing bolt 72A and the wing nut 72B. And the end plate 63 can be fastened.

As described above, by rotating the sub-herbicide rotor 23 (first sub-rotor 23L, second sub-rotor 23R) with respect to the main herbicide rotor 22 (first main rotor 22L, second main rotor 22R), the sub-herbicide rotor 23 Can be easily (one-touch) attached to the main weeding rotor 22. Further, by fastening the plate member 68 and the end plate 63 with the wing bolt 72A and the wing nut 72B, it is possible to prevent the sub weeding rotor 23 from rotating in the rotation direction with respect to the main weeding rotor 22 without tools.

Further, when the weeding rotor 21 is rotated in the second direction X2, the sub-weeding rotor 23 (first sub-rotor 23L, second sub-rotor 23R) is mainly used from the state where the head 70a is passed through the insertion hole 66. The weeding rotor 22 (first main rotor 22L, second main rotor 22R) is rotated in the direction opposite to the second direction X2 (the direction opposite to the arrow X3 direction shown in FIG. 20). In this case, the shaft portion 70b is inserted into the second groove 67b and abuts on the end portion 64b (see FIG. 20) of the second groove 67b. Therefore, when the weeding rotor 21 is rotated in the second direction X2, the end portion 64b of the second groove 67b pushes the shaft portion 70b, so that power is transmitted from the main weeding rotor 22 to the sub weeding rotor 23. ..

Further, when the weeding rotor 21 is rotated in the first direction X1 by exchanging the set of the first main rotor 22L and the first sub-rotor 23L and the set of the second main rotor 22R and the second sub-rotor 23R. And the case of rotating in the second direction X2. Therefore, the engaging groove 67 can be configured by only one of the first groove 67a and the second groove 67b. Further, the first mowing blade 25 and the second mowing blade 31 may be single-edged or double-edged. Further, the mounting structure of the sub-herbicide rotor 23 of the present embodiment can be applied to the case where the sub-herbicide rotor 23 having the same diameter as the main herbicide rotor 22 is mounted.

FIG. 21 shows a case where the side of the ridge U1 on which the multi-film M1 is laid is weeded by the weeding device 1. The multi-film M1 covers the ridge U1 and the hem Ma, which is the end side in the width direction of the multi-film M1, is pressed by the buried soil S1 which is the soil covering the hem Ma. Grass also grows on this buried soil S1.
For example, in the case of the weeding rotor 21 not provided with the sub-weeding rotor 23, when weeding the side of the ridge U1, if the weeding device 1 is moved to the ridge U1 in order to weed up to the upper part of the hem Ma of the multi-film M1. , The hem Ma may be caught by the weeding rotor 21 and the multi-film M1 may be caught in the weeding rotor 21.

On the other hand, in the weeding device 1 of the present embodiment, since the sub-weeding rotor 23 is provided, as shown in FIG. 4, when weeding the side of the ridge U1 on which the multi-film M1 is laid, weeding is performed. When the rotor 21 is brought closer to the ridge U1, the hem Ma is located below the sub-mowing rotor 23 due to the step 32 between the lower end of the main mowing rotor 22 and the lower end of the sub-mowing rotor 23. This makes it possible to weed the mulch film M1 without catching it. That is, the main weeding rotor 22 can weed the side of the hem Ma of the mulch film M1, and the sub weeding rotor 23 can weed the upper part of the hem Ma. As a result, weeding can be performed up to the time of the mulch film M1.

Further, in the present embodiment, since the first sub-rotor 23L is provided on one side of the main weeding rotor 22 and the second sub-rotor 23R is provided on the other side, the ridges U1 and ridges on which the multi-film M1 is laid are provided. When weeding the furrow groove, which is a groove between the U1 and the U1, the upper part of the hem Ma of the multi-film M1 laid on one ridge U1 was weeded by the first subrotor 23L, and the other ridge U1 was laid. The upper part of the hem Ma of the multi-film M1 can be weeded by the second sub-rotor 23R.

As shown in FIG. 2, the weeding device 1 has a cover body 36 attached to the machine frame 8. The cover body 36 is arranged on the left side of the upper cover 37 that covers the upper part of the mowing portion 19 (main weeding rotor 22), the rear cover 38 that covers the rear of the mowing portion 19 (the mowing rotor 21), and the upper cover 37. It has a first side cover 39L and a second side cover 39R arranged on the right side of the upper cover 37. The upper cover 37 is attached to the machine frame 8.

The machine frame 8 has a support arm 40 including a left support arm 40L projecting to the left from the gear case 12 and a right support arm 40R projecting to the right from the gear case 12. The upper cover 37 is attached to the attachment member 41L attached to the support arm 40L and the attachment member 41R attached to the support arm 40R.
At the rear of the upper cover 37, a pivot 42 having an axis in the width direction K2 is provided, and the upper part of the rear cover 38 is located at the rear of the upper cover 37 around the axis in the width direction K2 via the pivot 42. It is supported so that it can swing. As a result, the rear cover 38 can swing up and down (upward and downward).

The rear cover 38 has a ground leveling portion 38a that is in contact with the ground G1 side and prepares the mowing trace T1 that is a trace of weeding by the mowing portion 19 (main weeding rotor 22).
As shown in FIG. 2, the weeding device 1 has a repelling device 43 that urges the rear cover 38 downward.
The repelling device 43 has a rod 44 and an urging member 45. The front portion of the rod 44 is pivotally supported by a support piece 46 provided on the support arm 40. A holder 48 is provided on the upper portion of the bracket 47 projecting from the upper portion of the rear cover 38, and the rear portion of the rod 44 is inserted through the holder 48 so as to be movable in the axial direction. The holder 48 is rotatably supported by the bracket 47 around the axis in the width direction of the machine K2.

The urging member 45 is composed of a coil spring, is arranged on the front side of the holder 48, and is fitted on the outside of the rod 44. The rod 44 is provided with a spring receiving member 49 provided so as to be adjustable in position in the axial direction, and the urging member 45 is compressionally interposed between the holder 48 and the spring receiving member 49. As a result, the urging member 45 urges the rear cover 38 downward (in the grounding direction). By adjusting the position of the spring receiving member 49 in the axial direction of the rod 44, the urging force of the urging member 45 can be changed.

As shown in FIG. 2, the weeding device 1 has a height setting device 50 that defines (sets) the height of the weeding device 1. The height setting device 50 sets the weeding rotor 21 at a height at which the grass G2 on the ground is weeded while scraping the surface of the ground G1, for example.
The height setting device 50 includes a support frame 51, a gauge ring 52, and a height adjusting mechanism 53. The front portion of the support frame 51 is pivotally supported by the machine frame 8 and can swing up and down. The gauge wheel 52 is supported at the rear of the support frame 51 via a support column member 54, a wheel frame 55, and the like. The height adjusting mechanism 53 is provided between the support frame 51 and the mast 56 attached to the gear case 12, and regulates the vertical swing of the support frame 51. Further, the height adjusting mechanism 53 can be expanded and contracted in the length direction by operating the operation handle 57 or the like, and the support frame 51 can be swung up and down by expanding and contracting the height adjusting mechanism 53. ..

When the gauge ring 52 touches the ground, the height of the weeding rotor 21 is defined. Further, the height of the weeding rotor 21 can be changed by swinging the support frame 51 up and down.
In the present embodiment described in detail above, the tractor-mounted (vehicle-mounted) weeding device 1 mounted on the tractor 2 as a traveling body has been exemplified, but the present invention is not limited thereto. For example, it is adopted in a self-propelled weeding work machine in which a self-propelled machine (traveling body) equipped with a prime mover and a traveling device driven by the prime mover and a weeding device 1 are integrally configured. It may be the weeding device 1. As this self-propelled weeding work machine, the self-propelled machine is provided with a steering handle or the like to be gripped by an operator, and the worker who grips the steering handle operates the work machine while walking. A type of weeding work machine, or a passenger type weeding work machine in which a self-propelled machine is provided with a steering wheel for operating the driver's seat and a traveling device, and a worker seated in the driver's seat operates the work machine. Conceivable. Also in this self-propelled weeding work machine, power is transmitted from the prime mover to the mowing section 19 (weeding rotor 21) via the power transmission section. Further, a traveling body (traveling body) equipped with a traveling device such as wheels and a steering handle is provided with a weeding rotor 21, a prime mover for driving the weeding rotor 21, and a power transmission unit for transmitting the power of the prime mover to the weeding rotor 21. The mounted weeding work machine may be the weeding device 1 adopted in a hand-push type weeding work machine in which an operator holding a steering handle manually travels and moves.

The weeding device 1 and the weeding rotor 21 of the present embodiment have the following effects.
That is, the weeding device 1 of the present embodiment includes a machine frame 8, a rotating shaft 18 rotatably supported by the machine frame 8, and a main weeding rotor 22 that rotates together with the rotating shaft 18 to weed the grass G2 on the ground. , A weeding rotor 21 having a sub-weeding rotor 23 arranged side by side with the main weeding rotor 22 in the axial direction of the rotating shaft 18, and an insertion hole 66 provided in one of the main weeding rotor 22 and the sub-weeding rotor 23. An engaging hole 64 having an engaging groove 67 extending from the insertion hole 66 in the circumferential direction E1 of the weeding rotor 21, and a shaft portion 70b provided on the other side of the main weeding rotor 22 and the sub weeding rotor 23. The shaft portion 70b includes an engaging pin 70 provided at the end of the shaft portion 70b and having a head portion 70a that can be inserted into and removed from the insertion hole 66, and the shaft portion 70b allows the head portion 70a to pass through the insertion hole 66. It is located in the insertion hole 66 in the state of being inserted into the engaging groove 67 by rotating the sub-mowing rotor 23 with respect to the main weeding rotor 22 in this state, and the ends 64a and 64b of the engaging groove 67 are inserted. In the wall portion (central portion 63a) forming the engaging hole 64, the head portion 70a engages with the wall portion (central portion 63a) in a state where the shaft portion 70b is in contact with the ends 64a and 64b of the engaging groove 67, and the sub-mowing is performed. It has a regulating unit 63c that regulates the rotor 23 from separating from the main weeding rotor 22.

According to this configuration, the shaft portion 70b is formed by rotating the sub-mowing rotor 23 with respect to the main weeding rotor 22 in a state where the head 70a of the engaging pin 70 is passed through the insertion hole 66 of the engaging hole 64. Rotational force can be transmitted from the main weeding rotor 22 to the sub-weeding rotor 23 by contacting the end of the engaging groove 67, and the head 70a engages with the regulating portion 63c to allow the sub-weeding rotor 23 to perform the main weeding. It is regulated to separate from the rotor 22. That is, the sub-herbicide rotor 23 can be easily (one-touch) mounted by simply rotating the sub-herbicide rotor 23 with respect to the main herbicide rotor 22.

Further, a plurality of engaging holes 64 are formed on the circumference F1 centered on the axis Y1 of the rotating shaft 18, and the engaging grooves 67 of each engaging hole 64 are centered on the axis Y1 of the rotating shaft 18. A plurality of engaging pins 70 are provided on a circumference F2 having the same diameter as the circumference F1 centered on the axis Y1 of the rotating shaft 18 and centered on the axis Y1 of the rotating shaft 18. It may have been.
According to this configuration, when the sub-herbicide rotor 23 is attached to the main herbicide rotor 22, the shaft portion 70b is inserted into the engagement groove 67, so that the axis of the sub-herbicide rotor 23 is the axis of the main herbicide rotor 22. Can be matched to. This makes it easy to center the sub-weeding rotor 23.

Further, the rotation shaft 18 can be selectively rotated in the first direction X1 and the second direction X2 in the direction opposite to the first direction X1, and the engaging groove 67 is the first direction X1 from the insertion hole 66. It may include a first groove 67a extending in the direction opposite to the above and a second groove 67b extending from the insertion hole 66 in the direction opposite to the second direction X2.
According to this configuration, in the weeding device 1 that selectively rotates the weeding rotor 21 in the first direction X1 or the second direction X2, it is possible to facilitate the mounting of the sub-herbicide rotor 23.

Further, the main weeding rotor 22 has a support shaft 24 that is concentrically arranged on the rotation shaft 18 and rotates integrally with the rotation shaft 18, and an outer member (end plate 63) fixed to the outer end side of the support shaft 24. The sub-weeding rotor 23 has an inner member (plate member 68) superimposed on the outer member (end plate 63), and the engagement hole 64 is formed in the outer member (end plate 63) and engages. The pin 70 may be fixed to the inner member (plate member 68).

According to this configuration, by providing the engaging pin 70 on the sub-weeding rotor 23, when the head 70a is passed through the insertion hole 66, the positional relationship between the head 70a and the insertion hole 66 can be easily visually confirmed. The head 70a can be easily inserted into the insertion hole 66.
Further, a fixture 72 for fastening the outer member (end plate 63) and the inner member (plate member 68) without a tool may be provided.

According to this configuration, it is possible to prevent the main weeding rotor 22 from rotating in the direction opposite to the mounting direction of the sub weeding rotor 23 without using a tool.
Further, the sub-mowing rotor 23 may be formed to rotate concentrically with the main mowing rotor 22 and have diameters D3 and D4 smaller than the diameters D1 and D2 of the main mowing rotor 22.
According to this configuration, the sub-mowing rotor 23 can weed the grass above the lower end of the main weeding rotor 22. As a result, for example, when weeding the side of the ridge U1 on which the multi-film M1 is laid, since there is a step 32 between the lower end of the main weeding rotor 22 and the lower end of the sub weeding rotor 23, the weeding rotor 21 Weeding can be performed up to the time of the multi-film M1 without catching the hem Ma of the multi-film M1. Further, the weeding rotor 21 having a step between the lower end of the main weeding rotor 22 and the lower end of the sub weeding rotor 23 can be easily formed.

Further, in the sub-weeding rotor 23, the main weeding rotor 22 is located on the side of the hem Ma, which is the end side in the width direction of the mulch film M1 laid on the ridge U1, and the upper part of the hem Ma is weeded. It may be possible.
According to this configuration, when weeding the side of the ridge U1 on which the mulch film M1 is laid, the side of the hem Ma of the mulch film M1 is weeded by the main weeding rotor 22 and the hem Ma is weeded by the sub weeding rotor 23. The upper part of the mulch can be weeded. As a result, weeding can be performed up to the time of the mulch film M1.

Further, the sub-herbicide rotor 23 may have a first sub-rotor 23L provided on one side of the main herbicide rotor 22 and a second sub-rotor 23R provided on the other side of the main herbicide rotor 22. ..
According to this configuration, the furrow groove between the ridges U1 and the ridges U1 on which the multi-film M1 is laid can be satisfactorily weeded.

Further, the mowing rotor 21 of the present embodiment has a main weeding rotor 22 having a mowing blade (first mowing blade 25) provided around the support shaft 24 and the support shaft 24, and the support shaft 24 in the axial direction. A mowing blade (second mowing blade) that is arranged side by side with the main mowing rotor 22 and is different from the mowing blade (first mowing blade 25) and is provided around the extension line of the axis Y2 of the support shaft 24. A sub-weeding rotor 23 having a blade 31), a main weeding rotor 22 and a sub-weeding rotor 23, which are provided in one of the insertion holes 66 and the insertion holes 66 extending in the circumferential direction E1 about the support shaft 24. An engaging hole 64 having a mating groove 67, provided on the other side of the main weeding rotor 22 and the sub weeding rotor 23, provided at the end of the shaft portion 70b and the shaft portion 70b, and with respect to the insertion hole 66. The shaft portion 70b is provided with an engaging pin 70 having a removable head 70a, and the shaft portion 70b is located in the insertion hole 66 with the head 70a passed through the insertion hole 66, and is a sub in this state. The wall portion (central portion) that is inserted into the engaging groove 67 by rotating the weeding rotor 23 with respect to the main weeding rotor 22 and abuts on the ends 64a and 64b of the engaging groove 67 to form the engaging hole 64. 63a) has a regulating portion 63c that regulates that the head 70a engages with the shaft portion 70b in contact with the end of the engaging groove 67 to prevent the sub-weeding rotor 23 from separating from the main weeding rotor 22. ..

According to this configuration, the shaft portion 70b is formed by rotating the sub-mowing rotor 23 with respect to the main weeding rotor 22 in a state where the head 70a of the engaging pin 70 is passed through the insertion hole 66 of the engaging hole 64. Rotational force can be transmitted from the main weeding rotor 22 to the sub-weeding rotor 23 by contacting the end of the engaging groove 67, and the head 70a engages with the regulating portion 63c to allow the sub-weeding rotor 23 to perform the main weeding. It is regulated to separate from the rotor 22. That is, the sub-herbicide rotor 23 can be easily (one-touch) mounted by simply rotating the sub-herbicide rotor 23 with respect to the main herbicide rotor 22.

Further, a plurality of engagement holes 64 are formed on the circumference F1 centered on the axis Y2 of the support shaft 24, and the engagement grooves 67 of each engagement hole 64 are centered on the axis Y2 of the support shaft 24. A plurality of engaging pins 70 are provided on the circumference F2 having the same diameter as the circumference F1 centered on the axis Y2 of the support shaft 24 and centered on the axis Y2 of the support shaft 24. It may have been.
According to this configuration, when the sub-herbicide rotor 23 is attached to the main herbicide rotor 22, the shaft portion 70b is inserted into the engagement groove 67, so that the axis of the sub-herbicide rotor 23 is the axis of the main herbicide rotor 22. Can be matched to. This makes it easy to center the sub-weeding rotor 23.

Further, the main weeding rotor 22 can selectively rotate in the first direction X1 and the second direction X2 in the direction opposite to the first direction X1, and the engaging groove 67 is in the first direction from the insertion hole 66. It may include a first groove 67a extending in the direction opposite to X1 and a second groove 67b extending from the insertion hole 66 in the direction opposite to the second direction X2.
According to this configuration, when the weeding rotor 21 is attached to the weeding device 1 capable of selectively rotating in the first direction X1 or the second direction X2, it is possible to facilitate the attachment of the sub-herbicide rotor 23. can.

Further, the main weeding rotor 22 has an outer member (end plate 63) fixed to the outer end side of the support shaft 24, and the sub weeding rotor 23 has an inner member (end plate 63) superposed on the outer member (end plate 63). The plate member 68) may be provided, the engagement hole 64 may be formed in the outer member (end plate 63), and the engagement pin 70 may be fixed to the inner member (plate member 68).
According to this configuration, by providing the engaging pin 70 on the sub-weeding rotor 23, when the head 70a is passed through the insertion hole 66, the positional relationship between the head 70a and the insertion hole 66 can be easily visually confirmed. The head 70a can be easily inserted into the insertion hole 66.

Further, a fixture 72 for fastening the outer member (end plate 63) and the inner member (plate member 68) without a tool may be provided.
According to this configuration, it is possible to prevent the main weeding rotor 22 from rotating in the direction opposite to the mounting direction of the sub weeding rotor 23 without using a tool.
Further, the sub-mowing rotor 23 may be formed to rotate concentrically with the main mowing rotor 22 and have diameters D3 and D4 smaller than the diameters D1 and D2 of the main mowing rotor 22.

According to this configuration, when the weeding rotor 21 is attached to the weeding device 1 to weed the grass, the sub-weeding rotor 23 can weed the grass above the lower end of the main weeding rotor 22. As a result, for example, when weeding the side of the ridge U1 on which the multi-film M1 is laid, since there is a step 32 between the lower end of the main weeding rotor 22 and the lower end of the sub weeding rotor 23, the weeding rotor 21 Weeding can be performed up to the time of the multi-film M1 without catching the hem Ma of the multi-film M1. Further, the weeding rotor 21 having a step between the lower end of the main weeding rotor 22 and the lower end of the sub weeding rotor 23 can be easily formed.

Although one embodiment of the present invention has been described above, it should be considered that the embodiments disclosed this time are exemplary in all respects and are not restrictive. The scope of the present invention is shown by the scope of claims rather than the above description, and is intended to include all modifications within the meaning and scope equivalent to the scope of claims.

8 Machine frame 18 Rotating shaft 21 Weeding rotor 22 Main weeding rotor 23 Sub-weeding rotor 23L 1st sub-rotor 23R 2nd sub-rotor 24 Support shaft 25 Mowing blade (1st mowing blade)
31 Mowing blade (2nd mowing blade)
64 Engagement hole 63 Outer member (end plate)
63a Wall (central part)
63c Restriction part 64a End of engagement groove (first groove) 64b End of engagement groove (second groove) 66 Insertion hole 67 Engagement groove 67a First groove 67b Second groove 68 Inner member (plate member)
70 Engagement Pin 70a Head 70b Shaft 72 Fixture D1 Main Weeding Rotor (1st Main Rotor) Diameter D2 Main Weeding Rotor (2nd Main Rotor) Diameter D3 Sub Weeding Rotor (1st Sub Rotor) Diameter D4 Sub Diameter of weeding rotor (1st sub-rotor) E1 Circumferential F1 Circumference F2 Circumference G1 Ground G2 Grass M1 Multifilm Ma Hem U1 Ridge X1 1st Direction X2 2nd Direction Y1 Axis Center Y2 Axis Center

Claims (14)

With the machine frame,
A rotating shaft rotatably supported by the machine frame,
A weeding rotor having a main weeding rotor that rotates with the rotating shaft to weed the grass on the ground and a sub-weeding rotor arranged side by side with the main weeding rotor in the axial direction of the rotating shaft.
An engagement hole provided on one of the main weeding rotor and the sub-weeding rotor and having an insertion hole and an engagement groove extending from the insertion hole in the circumferential direction of the weeding rotor.
An engaging pin provided on the other side of the main weeding rotor and the sub-herbicide rotor and having a shaft portion and a head portion provided at an end portion of the shaft portion and removable to the insertion hole.
Equipped with
The shaft portion is located in the insertion hole with the head passed through the insertion hole, and in this state, the sub-herbicide rotor is rotated with respect to the main herbicide rotor to form the engagement groove. Insert it into contact with the end of the engagement groove and
The wall portion forming the engaging hole is such that the head portion engages with the shaft portion in contact with the end portion of the engaging groove so that the sub-herbicide rotor separates from the main weeding rotor. A weeding device with a regulatory department to regulate. A plurality of the engaging holes are formed on the circumference centered on the axis of the rotation axis.
The engaging groove of each engaging hole is formed in an arc shape centered on the axis of the rotating shaft.
The weeding device according to claim 1, wherein a plurality of engaging pins are provided on a circumference having the same diameter as the circumference centered on the axis of the rotating shaft and centered on the axis of the rotating shaft. .. The axis of rotation can selectively rotate in the first direction and the second direction opposite to the first direction.
Claim 1 or 2 in which the engaging groove includes a first groove extending from the insertion hole in a direction opposite to the first direction and a second groove extending from the insertion hole in a direction opposite to the second direction. The weeding device described in. The main weeding rotor has a support shaft that is concentrically arranged on the rotation shaft and rotates integrally with the rotation shaft, and an outer member fixed to the outer end side of the support shaft.
The sub-herbicide rotor has an inner member that is superposed on the outer member.
The engaging hole is formed in the outer member and
The weeding device according to any one of claims 1 to 3, wherein the engaging pin is fixed to the inner member. The weeding device according to claim 4, further comprising a fixture for fastening the outer member and the inner member without a tool. The herbicide according to any one of claims 1 to 5, wherein the sub-herbicide rotor rotates concentrically with the main herbicide rotor and is formed to have a diameter smaller than the diameter of the main herbicide rotor. The sub-herbicide rotor is capable of weeding the upper part of the hem portion in a state where the main weeding rotor is located on the side of the hem portion which is the end side in the width direction of the mulch film laid on the ridge. The weeding apparatus according to any one of 1 to 6. One of claims 1 to 7, wherein the sub-herbicide rotor has a first sub-rotor provided on one side of the main herbicide rotor and a second sub-rotor provided on the other side of the main herbicide rotor. The weeding device described in the section. A main weeding rotor having a mowing blade provided around the support shaft and the support shaft, and
A sub that is arranged side by side with the main weeding rotor in the axial direction of the support shaft and has a mowing blade that is different from the mowing blade and has a mowing blade provided around an extension line of the axis of the support shaft. With a weeding rotor,
An engagement hole provided on one of the main weeding rotor and the sub-weeding rotor and having an insertion hole and an engagement groove extending from the insertion hole in the circumferential direction about the support shaft.
An engaging pin provided on the other side of the main weeding rotor and the sub-herbicide rotor and having a shaft portion and a head portion provided at an end portion of the shaft portion and removable to the insertion hole.
Equipped with
The shaft portion is located in the insertion hole with the head passed through the insertion hole, and in this state, the sub-herbicide rotor is rotated with respect to the main herbicide rotor to form the engagement groove. Insert it into contact with the end of the engagement groove and
The wall portion forming the engaging hole is such that the head portion engages with the shaft portion in contact with the end portion of the engaging groove so that the sub-herbicide rotor separates from the main weeding rotor. A weeding rotor with a regulatory unit to regulate. A plurality of the engaging holes are formed on the circumference centered on the axis of the support shaft.
The engaging groove of each engaging hole is formed in an arc shape centered on the axis of the support shaft.
The weeding rotor according to claim 9, wherein a plurality of engaging pins are provided on a circumference having the same diameter as the circumference centered on the axis of the support shaft and centered on the axis of the support shaft. .. The main weeding rotor can selectively rotate in a first direction and a second direction opposite to the first direction.
9. The weeding rotor described in. The main weeding rotor has an outer member fixed to the outer end side of the support shaft.
The sub-herbicide rotor has an inner member that is superposed on the outer member.
The engaging hole is formed in the outer member and
The weeding rotor according to any one of claims 9 to 11, wherein the engaging pin is fixed to the inner member. The weeding rotor according to claim 12, further comprising a fixture for fastening the outer member and the inner member without a tool. The herbicide rotor according to any one of claims 9 to 13, wherein the sub-herbicide rotor rotates concentrically with the main herbicide rotor and is formed to have a diameter smaller than the diameter of the main herbicide rotor.

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