JP2019115290A - Weeder - Google Patents

Abstract

To provide a weeder capable of preventing generation of a part that cannot be weeded by a weeding rotor.SOLUTION: A weeder includes a machine casing, a revolving shaft supported rotatably by the machine casing, a mowing claw extending in a crossing direction to a shaft center of the revolving shaft, and rotating following rotation of the revolving shaft, and a weeding rotor extending in a direction along the revolving shaft, and rotating around the revolving shaft, which is a weeding rotor arranged side by side with the mowing claw in the shaft center direction of the revolving shaft.SELECTED DRAWING: Figure 6

Description

  The present invention relates to a weeding device.

Conventionally, a weeding device disclosed in Patent Document 1 is known.
The weeding device disclosed in Patent Document 1 has a rotary shaft that protrudes leftward and rightward from a power transmission unit to which power from a prime mover is transmitted, and a weeding rotor is disposed to the left and right of the power transmission unit. It is provided. The weeding rotor weeds above-ground grass by rotating integrally with the rotating shaft.

JP-A-8-187006

In the weeding device disclosed in Patent Document 1, for example, in the case of performing weeding between adjacent weirs, it is not possible to perform weeding between the left and right weeding rotors. Therefore, conventionally, there may be a portion where the weeding rotor can not be weeded.
An object of the present invention is to provide a weeding device capable of preventing a portion which can not be weeded by a weeding rotor.

  The weeding device according to one aspect of the present invention is extended in a direction intersecting with a machine frame, a rotary shaft rotatably supported by the machine frame, and an axis of the rotary shaft, and the rotary shaft rotates And a weeding rotor that extends in a direction along the rotation axis and rotates around the rotation axis, and is arranged side by side with the mowing claw in the axial direction of the rotation axis And a weeding rotor.

The weeding rotor may include a first weeding rotor and a second weeding rotor arranged side by side in the axial direction of the rotating shaft, and the mowing claw may be disposed between the first and second weeding rotors. Disposed between the first weeding rotor and the second weeding rotor.
In addition, the diameter of rotation of the weeding rotor is smaller than the length of the diameter of the rotation trajectory of the mowing claw in the direction orthogonal to the rotation axis.

  The power transmission unit to which power is transmitted from a traveling vehicle on which the machine frame is mounted is provided, and the rotary shaft is provided so as to protrude from the power transmission unit to one side and the other side in the machine width direction. The mowing claw includes a first mowing claw disposed on one side of the power transmission unit, and a second mowing claw disposed on the other side of the power transmission portion, and the weeding rotor comprises the first mowing claw The first grass cutting claw and the second grass cutting claw include a first weeding rotor disposed outside the grass cutting claw and a second weed rotor disposed outside the second grass cutting claw. By rotating, the tip end side enters below the lower end of the first weeding rotor and the lower end of the second weeding rotor and below the power transmission unit.

  The power transmission unit has a first inclined axial center which is disposed on one side of the power transmission unit and which moves downward toward the outer direction of the machine, and the first inclined axis along with the rotation of the rotation shaft. The rotary shaft has a first claw mounting shaft that rotates in the center, and an inclined second inclined axial center disposed on the other side of the power transmission unit and moving downward toward the outer direction of the vehicle, and the rotation shaft A second claw attachment shaft that rotates about the second inclined axial center with the rotation of the first mowing claw, the first mowing claw is attached to the first claw attaching shaft, and the second mowing claw is It is attached to the second claw attachment shaft.

Further, the weeding rotor has a support shaft arranged concentrically with the rotation shaft and integrally rotating with the rotation shaft, and a mowing blade spirally provided around the support shaft.
The weeding rotor is provided with a mounting flange provided on the rotating shaft, and the weeding rotor has a connecting flange mounted on the support shaft and connected to the mounting flange.

  According to the above configuration, by arranging the mowing claw and the weeding rotor side by side, the part which can not be weeded by the weeding rotor can be weeded with the mowing claw.

It is a side view of a state which equipped a traveling vehicle with a weeding device. It is a side view of a weeding device. It is the rear view which developed a part of weeding apparatus. It is a side view of the state which floated the weeding rotor from the ground. It is a side view of the other form of the weeding device. It is the rear view which developed a part of other forms of the weeding device.

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 where the weeding apparatus 1 is mounted on a tractor 2 illustrated as a traveling vehicle. FIG. 2 is a side view of the weeding device 1. FIG. 3 is a rear view of the weeding device 1. FIG. 4 is a side view of the weeding rotor lifted from the ground.
In the present embodiment, the arrow A1 direction (forward direction of the tractor 2) in FIGS. 1 and 2 will be described as the front, and the arrow A2 direction (reverse direction of the tractor 2) in FIGS. Therefore, the near side of FIGS. 1 and 2 is the left (see the arrow B1 direction in FIG. 3), and the far side of FIGS. 1 and 2 is the right (see the arrow B2 direction in FIG. 3).

  Moreover, the horizontal direction (vehicle width direction of the tractor 2) orthogonal to the front-back direction K1 is demonstrated as the body width direction K2 of the weeding apparatus 1. FIG. Further, the direction from the center to the right or the left from the central part in the machine width direction K2 in the weeding apparatus 1 will be described as the extracorporeal direction. In other words, the outboard direction is the direction away from the center in the width direction of the herbicidal apparatus 1 in the vehicle width direction K2. Also, the direction opposite to the direction outside the aircraft will be described as the direction inside the aircraft. In other words, the inside of the vehicle is the direction in which the widthwise direction of the weeding device 1 is close to the widthwise direction K2 of the vehicle body.

  As shown in FIG. 1, the tractor 2 includes a vehicle body 3 having an engine (motor) E1 and a transmission case M1. The front of the vehicle body 3 is supported by the front wheels 4, and the rear of the vehicle body 3 is supported by the rear wheels 5. That is, the tractor 2 has a wheel type traveling device having the front wheel 4 and the rear wheel 5. The traveling device may be a semi crawler traveling device having a crawler traveling mechanism mounted in place of the rear wheels, or may be a ful crawler traveling device.

  The power of the engine E1 is transmitted to the power transmission device in the transmission case M1, and the front wheel 4 and the rear wheel 5 are rotationally driven by the power transmitted to the power transmission device. A driver's seat 6 is mounted at the rear of the vehicle body 3. In front of the driver's seat 6, a steering handle 7 for steering the tractor 2 is provided. At the rear of the vehicle body 3, a PTO shaft (output shaft) is provided so as to project rearward. The power of the power transmission mechanism in the transmission case M1 can be extracted from the PTO shaft. The weeding device 1 is mounted on the rear 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. In addition, the weeding device 1 is moved up and down by a hydraulic device equipped to 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 tractor 2.

  As shown to FIG. 2, FIG. 3, the weeding apparatus 1 has the machine frame 8 with which the tractor 2 is mounted | worn. The machine frame 8 includes a power transmission unit 9 to which power is transmitted from the PTO shaft of the tractor 2. The power transmission unit 9 includes a gear case 12, a PIC shaft (input shaft) 11, a transmission case 13, and a transmission mechanism 14. The gear case 12 is disposed at the center of the weeding device 1 in the machine body width direction K2. The PIC shaft 11 is provided on the gear case 12 so as to project forward. The PIC shaft 11 is connected to the PTO shaft via a joint shaft such as a universal joint, and inputs power from the tractor 2 into the gear case 12. The transmission case 13 is provided to project downward from the gear case 12. The inside of the transmission case 13 is in communication 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 about an axis in the width direction K2. 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 portion 16 has a first gear 16A that rotates integrally with the PIC shaft 11, and a second gear 16B that rotates integrally with the transmission shaft 15. The first gear 16A and the second gear 16B mesh with each other. The transmission mechanism 14 has a second transmission unit 17 that transmits the power transmitted to the transmission shaft 15 to the lower portion 13 a of the transmission case 13. The second transmission unit 17 is wound around a first sprocket 17A that rotates integrally with the transmission shaft 15, a second sprocket 17B disposed in the lower portion 13a of the transmission case 13, the first sprocket 17A and the second sprocket 17B. And the chain 17C.

  As shown in FIG. 3, the weeding apparatus 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 body width direction K2, and is rotatably supported by the lower portion 13a of the transmission case 13 (the lower portion of the power transmission unit 9). The 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 protrude from one side (left) and the other side (right) of the transmission case 13 (power transmission unit 9) in the machine body width direction K2. In detail, the rotating shaft 18 has a first shaft portion 18 a that protrudes leftward from the transmission case 13 and a second shaft portion 18 b that protrudes rightward from the transmission case 13. In addition, the rotating shaft 18 does not need to be comprised by one axial member, and may be comprised by several axial members. For example, it may be formed by a shaft member protruding leftward of the transmission case 13 and a shaft member protruding rightward.

The weeding apparatus 1 has a mowing section 19 provided at the lower part of the machine frame 8. The mowing section 19 is attached to the rotating shaft 18, and rotates, for example, in the direction of the arrow X1 in FIG. 2, and weeds the grass G2 on the ground (on the ground G1) while advancing.
As shown in FIG. 3, the mowing section 19 has a weeding rotor 21 that rotates with the rotating shaft 18 to weed the above-ground grass G2. The weeding rotor 21 is extended in the axial center direction (direction along the axis Y1) of the rotating shaft 18. In addition, the weeding rotor 21 includes a first weeding rotor 21L and a second weeding rotor 21R arranged in line in the axial direction of the rotating shaft 18. Specifically, the first weeding rotor 21L is disposed on the left side of the transmission case 13 (power transmission unit 9), and the second weeding rotor 21R is disposed on the right side of the transmission case 13. The weeding rotor 21 is constituted by a squirrel-cage rotor, and its outer shape rotated around the rotation axis 18 has a cylindrical shape having an axial center in the body width direction K2.

  The first weeding rotor 21L has a support shaft 22 concentrically connected to the rotating shaft 18, and a mowing blade 23 provided spirally around the support shaft 22. The support shaft 22 is formed in a cylindrical shape having an axial center extending in the machine width direction K2 and is fitted to the outside of the rotation shaft 18. The support shaft 22 is flanged to the rotating shaft 18. Specifically, a mounting flange 24 is attached to the rotating shaft 18, and a connecting flange 25 connected to the mounting flange 24 is attached to the support shaft 22. The mounting flange 24 is disposed on the inward side of the first weeding rotor 21L.

  A plurality of mowing blades 23 are provided. In addition, at least one mowing blade 23 may be provided. The mowing blade 23 is provided across the inner frame member 26 provided on the inboard side of the first weeding rotor 21L and the outer frame member 27 provided on the outboard side of the first weeding rotor 21L. The inner frame member 26 is formed in a ring shape centering on the support shaft 22 and is connected to the connection flange 25 by a plurality of spokes 28. The outer frame member 27 has a disc portion 27a attached to the support shaft 22, and a plurality of projecting portions 27b extending from the disc portion 27a in the radial direction centering on the support shaft 22. The mowing blade 23 is provided across the projecting end of each protrusion 27 b and the inner frame member 26.

Since the second weeding rotor 21R has the same structure as the first weeding rotor 21L, the same members will be assigned the same reference numerals and descriptions thereof will be omitted.
As shown to FIG. 2, FIG. 3, the weeding apparatus 1 has the cover body 31 attached to the machine frame 8. As shown in FIG. The cover 31 includes an upper cover 32 covering the upper side of the mowing part 19 (the weeding rotor 21), a rear cover (cover) 33 covering the rear of the mowing part 19 (the weeding rotor 21), and a left side of the mowing part 19 And a second side cover 34R disposed on the right side of the mowing section 19. As shown in FIG.

  The upper cover 32 is attached to the machine frame 8. The machine frame 8 has a plurality of support arms. The plurality of support arms include a left support arm 38L protruding leftward from the gear case 12 and a right support arm 38R protruding rightward from the gear case 12. The upper cover 32 is attached to the attachment member 39L attached to the support arm 38L and the attachment member 39R attached to the support arm 38R.

  The rear cover 33 is pivotally supported at the rear of the upper cover 32. More specifically, a pivot 37 having an axis in the widthwise direction K2 is provided at the rear of the upper cover 32, and the upper portion of the rear cover 33 at the rear of the upper cover 32 about the axis in the widthwise direction K2 via the pivot 37. It is rockably supported by the Thus, the rear cover 33 can swing up and down (up and down). The rear cover 33 has a ground leveling portion 33a at the lower portion. The ground leveling portion 33a is grounded to the ground G1 side, and levels the weeding mark T1, which is a mark weeded by the mowing portion 19 (the weeding rotor 21).

The first side cover 34L has a first cover member 35L and a second cover member 36L located behind the first cover member 35L. The second side cover 34R has a first cover member 35R and a second cover member 36R located behind the first cover member 35R.
As shown in FIG. 2, the weeding device 1 has one or more push-down devices 40 that bias the rear cover 33 downward. As the rear cover 33 is biased downward by the push-down device 40, the leveling portion 33a presses the weeding mark T1 to level the weeding mark by the weed rotor 21.

  The push-down device 40 has a rod 41 and a biasing member 42. The rod 41 is provided from above the top cover 32 to above the rear cover 33. The front of the rod 41 is pivotally supported by a support piece 43 provided on the support arm. The rear portion of the rod 41 movably penetrates a holder 45 provided on the top of the bracket 44 in the axial direction. The bracket 44 is protruded upward from the upper rear surface of the rear cover 33. The holder 45 is supported by the bracket 44 so as to be rotatable about an axis in the machine width direction K2.

  The biasing member 42 is constituted by a coil spring and is fitted to the outside of the rod 41. The biasing member 42 is disposed on the front side of the holder 45. On the front side of the biasing member 42, a spring receiving member 46 provided on the rod 41 so as to be positionally adjustable in the axial direction is provided. The biasing member 42 is interposed between the holder 45 and the spring receiving member 46 in a compressed manner, thereby biasing the rear cover 33 downward (in the ground contact direction). By adjusting the position of the spring receiving member 46 in the axial direction of the rod 41, the biasing force of the biasing member 42 can be changed.

  As shown in FIG. 2, the weeding device 1 has a height setting device 47 that defines (sets) the height of the weeding device 1. The height setting device 47 has a support frame 48, a gauge wheel 49, and a height adjustment mechanism 50. The front portion of the support frame 48 is pivotally supported by the machine frame 8 and can swing up and down. The gauge wheel 49 is supported at the rear of the support frame 48 via a support member 51, a wheel frame 52, and the like. The height adjustment mechanism 50 is provided between the support frame 48 and the mast 53 attached to the gear case 12 to restrict the vertical movement of the support frame 48. Further, the height adjustment mechanism 50 can be expanded and contracted in the length direction by the operation of the operation handle 54 and the like, and the expansion and contraction of the height adjustment mechanism 50 can swing the support frame 48 up and down. .

When the gauge wheel 49 is in contact with 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 48 up and down. The weeding rotor 21 is set, for example, at a height to weed the above-ground grass G2 while shaving the surface of the ground G1.
As shown in FIG. 2, the weeding rotor 21 is formed in such a size that the lower part of the rear cover 33 can be grounded. The weeding rotor 21 has a size capable of pressing the marks weeded by the leveling portion 33 with the weeding rotor 21 grounded. In more detail, the rotation diameter D1 of the weeding rotor 21 centering on the axial center Y1 of the rotation shaft 18 is formed to a dimension that can ground the leveling portion 33a. In other words, as shown in FIG. 4, the rotation diameter D1 of the weeding rotor 21 is formed such that the leveling portion 33a protrudes downward from the weeding rotor 21 with the weeding rotor 21 floating from the ground G1. Thereby, the leveling part 33a can fully be pressed by the weeding mark T1. In addition, the weeding trace T1 weeding by the weeding rotor 21 can be leveled by the leveling portion 33a by pressing the leveling portion toward the ground G1 side by the biasing force of the infall device 40 biasing the rear cover 33 downward. .

The rotation diameter D1 of the weeding rotor 21 is the diameter of the locus drawn by the outer end of the weeding rotor 21 in the direction orthogonal to the axis Y1 of the rotating shaft 18 (the outer end locus of the weeding rotor 21 centered on the axis Y1). is there.
When cultivating pokeweed yams with chopsticks, mukago falls in the furrow between the coffins. In order to harvest this mukago, for example, it may be harvested by sweeping it with a broom. On the other hand, it is difficult to harvest the mukago (harvest) if the weeding trails are fluffy. On the other hand, in the weeding device 1 of this embodiment, since the weeding marks T1 weeding by the weeding rotor 21 can be leveled by the leveling portion 33a, a harvest such as a mukago present on the weeding marks T1 after leveling Can be easily harvested.

5 and 6 show another form of the weeding device 1.
About the explanation of the weeding device 1 of this other form, the same composition as the weeding device 1 of the form shown in Drawing 1-Drawing 4 mentioned above attaches the same numerals, omits explanation, and explains different composition.
As shown in FIG. 5 and FIG. 6, the mowing section 19 has mowing claws 61 extended in a direction intersecting the axis Y1 of the rotating shaft 18. The mowing claw 61 is arranged in line with the weeding rotor 21 in the axial center direction of the rotating shaft 18. The mowing claw 61 is disposed between the first weeding rotor 21L and the second weeding rotor 21R, and rotates with the rotation of the rotary shaft 18, thereby the first weeding rotor 21L and the second weeding rotor 21R Weed between. The rotation diameter D1 of the weeding rotor 21 is smaller than the length D2 in the direction orthogonal to the rotation axis 18 of the diameter of the rotation trajectory S1 of the mowing claw 61. The rotation locus S1 is a locus drawn by the outer end portion farthest from the rotation center of the mowing claw 61.

In the present embodiment, a claw is employed as the mowing claw 61. The mowing claw 61 may be formed of an L-shaped claw or a claw of another shape.
Next, the structure of the mowing claw 61 will be described in detail.
The mowing claw 61 includes one or more first mowing claws 61L and one or more second mowing claws 61R.

  As shown in FIG. 6, the first mowing claw 61 </ b> L is disposed on one side of the power transmission unit 9. Specifically, the first mowing claw 61L is disposed to the left of the lower portion 13a of the transmission case 13, and is disposed between the transmission case 13 and the first weeding rotor 21L. Therefore, the first weeding rotor 21L is disposed outside the first mower claw 61L. The first mowing claw 61 </ b> L is attached to a first claw mounting shaft 62 </ b> L disposed on one side of the power transmission unit 9. The first claw mounting shaft 62L is provided outside the rotary shaft 18 between the lower portion 13a of the transmission case 13 and the first weeding rotor 21L, and rotates with the rotation of the rotary shaft 18. In addition, the first claw attachment shaft 62L is inclined such that the first claw attachment shaft 62L moves downward as it goes toward the outer side (left) of the vehicle. That is, the first claw attachment shaft 62L has an inclined first inclined axial center Y2 which shifts downward as it goes toward the outboard side of the vehicle. The first claw mounting shaft 62L is rotatably supported by the rotary shaft 18 via a bearing or the like so as to be rotatable about a first tilt axis Y2. An interlocking mechanism for transmitting the rotation of the rotary shaft 18 to the first claw mounting shaft 62L is provided between the first claw mounting shaft 62L and the rotary shaft 18. Thus, the first claw attachment shaft 62L rotates about the first tilt axis Y2 with the rotation of the rotary shaft 18. The first mowing claw 61L is attached to the claw holder fixed to the first claw mounting shaft 62L, and is extended outward in the radial direction of the first claw mounting shaft 62L.

  The length D2 of the diameter of the rotation locus S1 of the mowing claw 61 in the direction orthogonal to the rotation axis 18 is larger than the diameter D1 of the weeding rotor 21, and the first mowing claw 61L has an inclined first The first mowing claw 61L is rotated about the first inclined axial center Y2 by extending in the radial outward direction of the first claw attachment shaft 62L having the first inclined axial center Y2, so that the tip end side is the first It enters below the lower end of the weeding rotor 21L and below the transmission case 13 (power transmission unit 9). As a result, the first mowing claw 61L dives into the soil between the first and second weeding rotors 21L and 21R and below the transmission case 13, and weeds the lower part of the transmission case 13.

  As shown in FIG. 6, the second mowing claw 61 </ b> R is disposed on the other side of the power transmission unit 9. Specifically, the second mowing claw 61R is disposed to the right of the lower portion 13a of the transmission case 13 and between the transmission case 13 and the second weeding rotor 21R. Therefore, the second weeding rotor 21R is disposed outside the second mower claw 61R. The second mowing claw 61R is attached to a second claw attachment shaft 62R disposed on the other side of the power transmission unit 9. The second claw mounting shaft 62R is provided outside the rotary shaft 18 between the lower portion 13a of the transmission case 13 and the second weeding rotor 21R, and rotates with the rotation of the rotary shaft 18. In addition, the second claw attachment shaft 62R is inclined such that the second claw attachment shaft 62R moves downward as it goes toward the outer side (right side) of the vehicle. That is, the second claw attachment shaft 62R has a sloped second inclined axis Y3 which moves downward as it goes toward the vehicle body. The second claw mounting shaft 62R is rotatably supported by the rotary shaft 18 about a second tilt axis Y3 via a bearing or the like. An interlocking mechanism for transmitting the rotation of the rotary shaft 18 to the second claw mounting shaft 62R is provided between the second claw mounting shaft 62R and the rotary shaft 18. Thus, the second claw attachment shaft 62R rotates about the second inclined axis Y3 with the rotation of the rotary shaft 18. The second mowing claw 61R is attached to the claw holder fixed to the second claw mounting shaft 62R, and is extended outward in the radial direction of the second claw mounting shaft 62R.

  The length D2 in the direction orthogonal to the rotation axis 18 of the diameter of the rotation locus S1 of the mowing claw 61 is larger than the rotation diameter D1 of the weeding rotor 21, and the second mowing claw 61R is inclined The distal end side of the second mowing claw 61R is rotated about the second inclined axial center Y3 by extending in the radial outward direction of the second claw attachment shaft 62R having the two inclined axial center Y3 so that the tip end side is the second It enters below the lower end of the weeding rotor 21R and below the transmission case 13 (power transmission unit 9). As a result, the second mowing claw 61R dives into the soil between the first and second weeding rotors 21L and 21R and below the transmission case 13, and weeds the lower side of the transmission case 13.

  In the present embodiment, the first mowing claw 61L and the second mowing claw 61R are attached so as to be out of phase with each other in the circumferential direction around the axis Y1 of the rotating shaft 18. As shown in FIG. 6, the mowing claws 61 include a plurality of first mowing claws 61L, and the plurality of first mowing claws 61L are arranged in mutually shifted positions in the direction of the first inclined axial center Y2. The mowing claw 61 includes a plurality of second mowing claws 61R, and the plurality of first mowing claws 61R are disposed in mutually shifted positions in the direction of the second inclined axial center Y3. Further, the first mowing claw 61L is provided so that when the tip end is positioned below the transmission case 13, the tip is close to the center line O1 in the body width direction K2 of the transmission case 13. . In addition, the second mowing claw 61R is also provided so that the tip approaches the center line O1 of the transmission case 13 when the tip is positioned below the transmission case 13.

When the front end of the first mowing claw 61L is located below the transmission case 13, the front end may be located to the right of the center line O1. In addition, when the tip of the second mowing claw 61R is positioned below the transmission case 13, the tip may be positioned to the left of the center line O1.
Moreover, although it does not limit, the rotation radius (1/2 of rotation diameter D1) of the weeding rotor 21 is set to about half of the rotation radius D3 of the mowing claw 61, for example.

The weeding apparatus 1 of this embodiment has the following effects.
The weeding device 1 includes a machine frame 8, a rotating shaft 18 rotatably supported by the machine frame 8, a weeding rotor 21 that rotates with the rotating shaft 18 to weed the above ground grass G2, and a rear of the weeding rotor 21 And a cover having a leveling portion 33a, which is a cover (rear cover 33) that is in contact with the ground to level the marks weeded by the weeding rotor 21.

According to this configuration, the marks weeding by the weeding rotor 21 can be leveled by the leveling portion 33a of the cover. This makes it possible to easily harvest, for example, a harvest such as a mukago present at the weeding mark T1.
The weeding rotor has a size capable of pressing the weeding mark of the leveling portion with the weeding rotor in contact with the ground.

According to this configuration, the marks weeding by the weeding rotor 21 can be well leveled.
The cover is pivotable up and down, and the leveling portion 33a protrudes below the weeding rotor 21 with the weeding rotor 21 floating from the ground.
According to this configuration, the ground leveling portion 33a can be sufficiently grounded, and the marks weeding by the weeding rotor 21 can be well leveled by the ground leveling portion 33a.

In addition, the weeding rotor 21 has a support shaft 22 concentrically connected to the rotation shaft 18 and a mowing blade 23 spirally provided around the support shaft 22.
According to this configuration, the rotational diameter D1 of the weeding rotor 21 can be easily reduced by bringing the helical mowing blade 23 closer to the support shaft 22.
The power transmission unit 9 to which power is transmitted from the traveling vehicle (tractor 2) to which the machine frame 8 is attached is provided, and the rotary shaft 18 is provided protruding from the power transmission unit 9 on both sides in the machine width direction K2. The weeding rotor 21 includes a first weeding rotor 21L disposed on one side of the power transmission unit 9 and a second weeding rotor 21R disposed on the other side of the power transmission unit 9.

According to this configuration, the grass on the ground can be weeded by the first and second weeding rotors 21L and 21R while advancing the weeding device by the traveling vehicle.
The weeding rotor 21 also has a connecting flange 25 attached to the support shaft 22 and connected to the mounting flange 24.
According to this configuration, the weeding rotor 21 can be easily attached to the rotating shaft 18 by flange connection.

Further, the cover is provided with a push-down device 40 that biases the cover, and the cover is pivotable up and down and is biased downward by the push-down device 40 to press the mark that the leveling portion 33a has weeded.
According to this configuration, the marks weeding by the weeding rotor 21 can be firmly leveled by the leveling portion 33a.
In addition, the weeding device 1 is extended in a direction intersecting the machine frame 8, the rotation shaft 18 rotatably supported by the machine frame 8, and the axis Y1 of the rotation shaft 18, and the rotation of the rotation shaft 18 is performed. It is a weeding rotor 21 which is provided along the rotating shaft 18 and extends in the direction along the rotating shaft 18, and is arranged side by side with the mowing claw 61 in the axial center direction of the rotating shaft 18. And a weeding rotor 21.

According to this configuration, the portion which can not be weeded by the weeding rotor 21 can be weeded by the mowing claw 61.
In addition, the weeding rotor 21 includes a first weeding rotor 21L and a second weeding rotor 21R arranged side by side in the axial center direction of the rotating shaft 18, and the mowing claw 61 includes the first weeding rotor 21L and the second weeding rotor 21R. Between the first and second weeding rotors 21L and 21R.

According to this configuration, it is possible to weed between the first and second weeding rotors 21L and 21R with the mowing claw 61, and a portion which can not be weeded between the first and second weeding rotors 21L and 21R. It is possible to prevent the formation of residual grass that is.
The rotation diameter D1 of the weeding rotor 21 is smaller than the distance D2 in the direction orthogonal to the rotation axis 18 of the diameter of the rotation trajectory S1 of the mowing claw 61.

According to this configuration, the mowing claw 61 can be buried in the ground, and the function of the mowing claw 61 can be exhibited.
In addition, the weeding device 1 includes a power transmission unit 9 to which power is transmitted from a traveling vehicle (tractor 2) to which the machine frame 8 is attached, and the rotary shaft 18 is one side of the vehicle width direction from the power transmission unit 9 and The mowing claw 61 is provided so as to project to the other side, and the mowing claw 61 is provided with a first mowing claw 61L disposed on one side of the power transmission unit 9 and a second mowing claw 61R disposed on the other side of the power transmitting unit 9. And the weeding rotor 21 includes a first weeding rotor 21L disposed outside the first grass cutting claw 61L and a second weed rotor 21R disposed outside the second grass cutting claw 61R. The first mowing claw 61L and the second mowing claw 61R rotate so that the tip end side enters below the lower end of the first weed rotor 21L and the second weed rotor 21R and below the power transmission unit 9.

According to this configuration, the lower part of the power transmission unit 9 between the first weeding rotor 21L and the second weeding rotor 21R can be weeded by the first grass cutting claw 61L and the second grass cutting claw 61R.
Also, it has an inclined first inclined axis Y2 disposed on one side of the power transmission unit 9 and moving downward toward the outboard direction of the machine, and along with the rotation of the rotary shaft 18, the first inclined axis A first claw attachment shaft 62L that rotates about a center Y2, and a second inclined axis Y3 that is disposed on the other side of the power transmission unit 9 and that shifts downward toward the outer direction of the vehicle and A second claw attachment shaft 62R that rotates about the second inclined axis Y3 with the rotation of the rotary shaft 18, and the first mowing claw 61L is attached to the first claw attachment shaft 62L, and the second mowing claw 61R is attached to the 2nd nail attachment axis 62R.

According to this configuration, by attaching the mowing claw 61 to the inclined shaft, the weeding in the lower part of the power transmission unit 9 can be performed with a simple configuration.
As mentioned above, although one Embodiment of this invention was described, it should be thought that embodiment disclosed this time is an illustration and restrictive at no points. The scope of the present invention is indicated not by the above description but by claims, and is intended to include all modifications within the meaning and scope equivalent to claims.

DESCRIPTION OF SYMBOLS 8 machine frame 9 power transmission part 18 rotating shaft 21 weeding rotor 21L 1st weeding rotor 21R 2nd weeding rotor 22 spindle 23 grass cutting blade 24 mounting flange 25 connecting flange 61 grass cutting claw 62L 1st claw mounting shaft 62R 2nd claw mounting shaft D1 Diameter of rotation D2 Distance K2 Body width direction S1 Rotation locus Y1 Axis Y2 First axis of tilt Y3 Axis of second tilt

Claims (7)

Machine frame,
A rotating shaft rotatably supported by the machine frame;
A mowing claw which extends in a direction intersecting with the axis of the rotating shaft and rotates with the rotation of the rotating shaft;
A weeding rotor extending in a direction along the rotation axis and rotating about the rotation axis, the weeding rotor being arranged side by side with the mowing claw in the axial center direction of the rotation axis;
Weeding device equipped with. The weeding rotor includes a first weeding rotor and a second weeding rotor, which are disposed side by side in the axial direction of the rotation shaft,
The weeding device according to claim 1, wherein the mowing claw is disposed between the first weeding rotor and the second weeding rotor to weed between the first and second weeding rotors. .   The weeding device according to claim 1 or 2, wherein a rotation diameter of the weeding rotor is smaller than a length in a direction orthogonal to the rotation axis of a diameter of a rotation trajectory of the mowing claw. A power transmission unit to which power is transmitted from a traveling vehicle equipped with the machine frame;
The rotary shaft is provided so as to protrude from the power transmission unit to one side and the other side in the width direction of the machine body,
The mowing claw includes a first mowing claw disposed on one side of the power transmission unit, and a second mowing claw disposed on the other side of the power transmission portion.
The weeding rotor includes a first weeding rotor disposed outside the first mower claw and a second weeding rotor disposed outside the second mower claw.
The tip end side of the first mowing claw and the second mowing claw is inserted below the lower ends of the first and second weeding rotors and below the power transmission unit by rotating the first mowing claw and the second mowing claw. The weeding device according to any one of 3. It has an inclined first inclined axial center which is disposed on one side of the power transmission unit and shifts downward as it goes to the outside of the machine, and with the rotation of the rotation shaft, around the first inclined axial center First claw mounting shaft, which rotates in
It has an inclined second inclined axis which is disposed on the other side of the power transmission unit and shifts downward as it goes to the outside of the machine, and around the second inclined axis with the rotation of the rotary shaft. Second claw mounting shaft, which rotates
Equipped with
The first grass cutting claw is attached to the first claw mounting shaft,
The weeding device according to claim 4, wherein the second mower claw is attached to the second claw attachment shaft. The weeding rotor is
A spindle coaxially arranged on the rotation axis and integrally rotating with the rotation axis;
The weeding device according to any one of claims 1 to 5, further comprising: a mowing blade spirally provided around the spindle. A mounting flange provided on the rotating shaft;
The weeding device according to claim 6, wherein the weeding rotor has a connecting flange attached to the support shaft and connected to the mounting flange.

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