JP2000197407A - Weeding apparatus - Google Patents

Abstract

PROBLEM TO BE SOLVED: To carry out weeding on a slope, etc., safely, surely and efficiently. SOLUTION: A mowing part 10 is built in a steel case 9 equipped with a fitting part 7 to the tip part of an arm member of a back hoe. Weeds introduced from a front opening part 14 by the advance of the steel case 9 is cut by the mowing part 10 and discharged from a rear opening part 17. The mowing part 10 is provided with mowing blades 23a, 23b and 23c fixed to three revolving shafts, respectively installed at fixed intervals in the right and left direction of the steel case 9. The mowing blade 23a existing at the left in the advance direction of the steel case 9 is rotated clockwise when viewed in a plane. The remaining mowing blades 23b and 23c are rotated anticlockwise. An empty can, a small stone, etc., struck and shaken off by the mowing blades 23b and 23c are repelled in the rear direction by the clockwise rotating mowing blade 23a in the steel case 9.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a weeding apparatus capable of safely, reliably and efficiently weeding a slope or the like.

[0002]

2. Description of the Related Art As a conventional weeding device on a slope or the like, a mower is generally used to cut a grass by rotating a single grass cutting tip saw at a high speed, and an operator directly holds an operation handle. Weeding was performed.

[0003]

However, when the conventional brush cutter is used, there are the following problems. Since a single cutting saw is rotated at a high speed to cut the grass, when the cutting saw hits an empty can, pebbles, or the like, the cutting saw may be scattered, and the worker may be injured. There is also a risk that the scattered pebbles or the like hit the nearby traveling car or the nearby parked car and damage the window glass or the like. Of course, this type of brush cutter is provided with a safety cover, but in many cases, the scattering of empty cans and pebbles cannot be prevented.

[0004] Further, since the weeding operation is performed while the operator directly holds the operation handle, there is a danger that the leg may be cut off when the weeding operation is performed on a slope or a place with a poor footing. An object of the present invention is to provide a weeding device capable of solving such a problem.

[0005]

The present invention employs the following means to solve the above-mentioned problems. That is, in the weeding device according to the present invention, the side plate portions are provided on both left and right sides of the substrate portion so as to face each other, and the mowing portion is provided inside a housing having a lower portion, a front portion, and a rear portion opened. The grass introduced from the front opening is cut off by the mowing part and discharged from the rear opening by the advance of the base, so that the board protrudes downward in the housing. In addition, a plurality of rotating shafts are provided in parallel with a required interval in the left-right direction, and a mowing blade is fixed to each rotating shaft, and each mowing blade is forcibly rotated with the rotation of the rotating shaft. It is done as follows.
In addition, the edge portions of the adjacent mowing blades in a rotating state can be rotated in an intersecting state and without abutting,
The mowing blade at the left end in the forward direction of the housing rotates clockwise in plan view, and the other rotating blades rotate counterclockwise, so that the clockwise mowing blade hits the remaining mowing blade. The present invention is characterized in that a massive object such as an empty can, a pebble, a piece of wood, or the like that has been spattered is repelled toward the rear in the housing.

In another aspect of the weeding device according to the present invention, side plates are provided on both left and right sides of a substrate so as to face each other, and a mowing portion is provided inside a housing having a lower portion, a front portion, and a rear portion opened. The grass introduced from the front opening by the advancement of the housing is cut off by the mowing unit and discharged from the rear opening. A plurality of rotating shafts are provided in parallel with a required interval in the left-right direction so as to protrude downward, and a mowing blade is fixed to each rotating shaft, and each rotating shaft is rotated by rotation of the rotating shaft. The mowing blade is forcibly rotated. In addition, the mowing blades adjacent to each other in the rotating state can be rotated so that they are in an intersecting state and do not collide with each other, and the mowing blade at the right end in the forward direction of the housing is counterclockwise in plan view. While rotating, the remaining rotating blades are made to rotate clockwise, and the clockwise mowing blade removes the empty cans, pebbles, pieces of wood and the like that have been hit and hit by the remaining mowing blades in the housing. It is characterized by bouncing backwards.

[0007] In the weeding device, the number of rotation axes is set to three,
The rotating shafts at both ends located on the front side are arranged so as to be adjacent to each other on the left and right, while the rotating shaft located at the center is arranged behind the rotating shafts at both ends, and each rotating shaft is located substantially at the vertex position of an isosceles triangle. The mowing blade at the left end in the forward direction of the housing is clockwise in plan view. While rotating, the remaining rotating blades are made to rotate counterclockwise, and the clockwise mowing blade is
It is preferable that the remaining mowing blades are configured so that a lump of empty cans, pebbles, pieces of wood, or the like, which have been blown off, is bounced rearward in the housing.

Alternatively, the number of rotation axes is set to three, and the rotation axes at both ends located on the front side are arranged so as to be adjacent to each other on the left and right.
The rotating shaft located at the center is disposed behind the rotating shafts at both ends, and each rotating shaft is configured to be located at a substantially apex position of an isosceles triangle, and an edge portion of the adjacent mowing blade in a rotating state is arranged. The mowing blade at the right end in the forward direction of the casing rotates counterclockwise in plan view, and the other rotating blades rotate clockwise in plan view. The counterclockwise mowing blade may preferably be configured to hit the remaining mowing blades and bounce off the lump, such as empty cans, pebbles, and wood chips, rearward in the housing. In each of the weeding devices, a sliding plate that is long in the front-rear direction and whose front end portion is bent obliquely upward toward the front is preferably provided at the lower ends of the left and right side plate portions.

In each of the above-mentioned weeding apparatuses, it is preferable that all the rotating mowing blades are provided so as not to protrude from an opening at the front of the housing.

[0010] In each of the above-mentioned weeding devices, it is preferable to provide a connecting portion to the tip portion of the arm member of the backhoe on the upper surface side of the substrate portion. In this case, it is preferable that the connecting portion is rotatable around an axis substantially parallel to the axis of the rotating shaft, and is also capable of being fixed to the substrate portion in a required rotating state.

[0011]

Embodiments of the present invention will be described below with reference to the drawings. 1 and 4, a weeding device 1 according to the present invention is attached to, for example, a distal end portion 5 of an arm member 3 of a backhoe 2 and performs weeding of a slope 6 or the like by a required moving operation by the backhoe 2. As shown in FIGS. 2 and 3, the mowing part 10 is provided inside the housing 9 provided with the mounting part 7 to the tip part 5 of the arm member, and the mowing part 10 is driven. A drive unit 11 is provided on the housing 9.

As shown in FIGS. 2 and 3, the housing 9 has side plates 13 and 13 formed on both left and right sides of the substrate portion 12 so as to face each other, and the lower portion, the front portion, and the rear portion are open. It has a flat rectangular box shape, and the left and right width of the front opening 14 is set to, for example, about 1 m. The left and right sides 15, 15 of the substrate portion 12 are mowing blades 23a, 23 at both ends described later.
The left and right side plates 13, 13 are also curved in accordance with the curved state, while being curved outwardly in consideration of the rotation range of b. And, as the housing 9 advances,
As shown by an arrow F1 in FIG. 9, the grass 16 (FIG. 1) introduced into the housing 9 from the front open portion 14 is
And then discharged from the rear opening 17.
At the lower ends of the left and right side plates 13, 13, sliding plates 20, 20 which are long in the front-rear direction and whose front end portion 19 is bent obliquely upward toward the front, are fixedly provided.

As shown in FIGS. 3 to 5, the mowing portion 10 is supported by bearings 21 provided on the substrate portion 12 and protrudes downward in the housing 9 so as to protrude downward. It comprises rotating shafts 22, 22, and three mowing blades 23, 23, 23 fixed to these rotating shafts. The rotating shaft 2
The arrangement of 2, 22, 22 is an arrangement state in which a required interval is provided in the left-right direction, and in the present embodiment, it is set at a position near the left and right end on the front side of the substrate unit 12 and at a substantially central position of the substrate unit. The rotation axis 2 is located at the approximate vertex position of an isosceles triangle.
2,22,22 exist.

As shown in FIGS. 3 to 5, at the projecting lower end portions of the respective rotating shafts, the central portions of the rectangular plate-shaped mowing blades 23, 23, 23 whose central portions are slightly expanded are fixed. As shown in FIG. 4, the vertical positions of the mowing blades 23a and 23b at both ends are set to be equal, and the intermediate mowing blade 23c is raised by about 1 cm from them. FIG. 4 is an enlarged view of the weeding device 1 in a use state shown by a solid line in FIG. The three mowing blades are adjacent to the mowing blades 23 which are in a rotating state.
a, 23c, 23b, edge portion 27, 27c of 23c,
27, 27 can be rotated so that they are crossed and do not abut. The direction of rotation of each mowing blade is as shown by the arrow in FIG. , 23c rotate counterclockwise F5, and the clockwise mowing blade 23a hits the remaining mowing blades 23b, 23c as shown by arrows F6 and F7 in FIG. A lump such as a piece of wood is configured to be bounced rearward in the housing 9.

These rotating mowing blades 23, 23, 23
Is formed so as not to protrude from the open portion 14 at the front of the housing 9, and the rear edge of the upper surface of the substrate portion 12 is provided with a flexible material for covering the open portion 17 behind the housing. Cover piece 29
The upper edge portion 30 is fixed.

As shown in FIG. 6, the driving section 11
Each of the rotating shafts 22, 22, 22 is protruded from the upper surface side of the substrate portion 12, and pulleys 32, 3
2, 32 are fixedly provided. In addition, each of the rotation shafts 22a and 22c located at the middle and the left end in the forward direction of the housing 9 has:
Pulleys 32, 32, 32, 32 are fixedly provided in upper and lower double, and one pulley 32 is fixedly provided on the rotating shaft 22a located at the left end.

A belt 33 is crossed over a pulley 32 provided on the left end rotating shaft 22a and a lower pulley 33 provided on the intermediate rotating shaft 22c, and a right end rotating shaft 22b is provided.
A belt 33 is hung in parallel with a lower pulley 32 provided on the upper side of the pulley 32 provided on the intermediate rotary shaft 22c, and a motor 35 disposed on a rear right corner of the upper surface of the substrate section 12. A belt 33 is run in parallel with a pulley 32 fixed to the rotating shaft and a lower pulley 32 fixed to the rotating shaft 22b located at the right end. The rotation of the motor 35 causes the rotation shafts 22a, 22b, and 22c to rotate at high speed.
3a, 23b and 23c correspond to the rotation direction F shown in FIG.
4, rotate at F5.

As shown in FIGS. 2 and 7, the mounting portion 7 is provided at the center of the upper surface of the substrate portion 12 so as to straddle the intermediate rotary shaft 22c (FIG. 6).
6, a rotating disk 38 is rotatably pivotally mounted on the upper surface 37 of the arm member 3 at the center thereof. Plate-shaped connecting portions 39, 39 connected to FIG. As shown in FIGS. 2 and 7, for example, the pivotal attachment is performed by aligning a screw hole 40 provided at the center of the upper surface of the portal support 36 with a bolt hole 41 provided at the center of the rotating disk. The screw holes 40 are screwed into the screw holes 40. Then, a fixing screw hole 43 provided in a peripheral portion of the rotating disk 38 is provided in a top surface portion 45 of the gate-shaped support base at a required angle of a positioning hole 46 provided at a required angular pitch around the center of the screw hole 40. The connecting direction of the connecting portions 39 can be set as required by inserting the fixing screw 47 screwed into the fixing screw hole 43 into the positioning hole 46 and tightening the bolt 42. It has been done. The mounting directions of the connecting portions 39, 39 indicated by solid lines in FIG. 8 are different from those shown in FIG.

The plate-like connecting portions 39, 39
Connection holes 49 and 50 are provided in upper and lower portions thereof, and the upper connection holes 49 and 49 opposed to each other are aligned with connection holes provided in the distal end portion 5 of the arm member 3 and connected to these connection holes. The pin 51 is inserted therethrough, and the lower connecting holes 50, 50 opposed to each other are formed in a V-shaped link 53 oscillating by the expansion and contraction of a hydraulic cylinder 52 (FIG. 1) provided in parallel with the arm member 3. 1 and 4, the housing 9 is positioned at the end of the arm member 3 by inserting the connecting pin 55 into the connecting hole provided at the end of the arm member 3 as shown in FIGS. 5 is attached. The housing 9 mounted in this manner is provided with the required swinging motion of the arm member 3 and the required swinging motion of the V-shaped link 53 accompanying the expansion and contraction of the hydraulic cylinder 52. As shown by, the portion to be weeded such as the slope 6 is appropriately applied.

However, in order to perform weeding on the slope 6 by the weeding device 1 having such a configuration, as shown in FIGS. 1 and 4, the weeding device 1 is attached to the tip 5 of the arm member 3 of the backhoe 2. Attach. The mounting procedure is such that the left and right connecting portions 39, 39 of the mounting portion 7 are
Is performed using the connecting pins 51 and 55 for the tip portion 5. At this time, the mounting direction of the connecting portions 39, 39 with respect to the housing is set as required. Then, the traveling of the backhoe 2 and the arm member 3 and the V-shaped link 53 are performed.
Of the left and right sliding plates 20, 20
The weeding device 1 is moved as required while sliding on the slope 6. The state during this movement is shown in an enlarged manner in FIG. With this movement, the grass 16 is introduced into the housing 9 through the opening 14 at the front of the housing 9. The introduced grass is cut off by the high-speed rotation of each of the grass cutting blades 23a, 23b, 23c. Then, the cut grass is discharged from the opening 17 later as the housing 9 moves.

At the time of weeding, the rotating blade may hit a lump such as an empty can, pebbles, or a piece of wood. This will be described with reference to FIG. 9 which shows a part of the substrate unit 12 cut away. Now, when the housing 9 moves forward F, the rightmost mowing blade 23b that rotates counterclockwise and the middle It is assumed that the mowing blade 23c hits an empty can, a pebble, or the like and hits it in the direction indicated by the arrow F6. The splashed empty cans and pebbles are captured by the grass cutting blade 23a with the advance of the housing 9 because the grass cutting blade 23a located at the left end rotates counterclockwise as described above. In the housing 9, it is rebounded toward the rearward direction indicated by the arrow F <b> 7 (toward the rear open portion 17),
In a state where it is mixed with the cut grass, as the housing advances,
The cover piece 29 is sequentially and safely discharged from the later opening portion 17 with the cover piece 29 lifted.

In this embodiment, three rotating shafts 2
Since 2a, 22b, and 22c are arranged at approximately the apexes of an isosceles triangle, the mowing blade 23 that rotates clockwise is used.
The prevention of scattering of empty cans, pebbles and the like by a can be effectively achieved in the same manner as described above.

That is, the rightmost mowing blade 23b that rotates counterclockwise is the leftmost mowing blade 2 that rotates clockwise.
Even if the position viewed in the front-rear direction is the same as 3a, since the grass cutting blades 23a and 23b are separated from each other, in consideration of the forward movement of the housing 9, for example, solid arrows F6 and F in FIG.
As shown by 7, the empty cans and the like that have been hit by the counterclockwise mowing blade 23 b are captured by the mowing blade 23 a at the forward position that rotates clockwise, and are reliably bounced in the rearward direction 7. become. And the mowing blade 23 located in the middle
c is close to the clockwise mowing blade 23a, but is located at the rear position of the clockwise mowing blade 23a. In consideration of the advance of the housing 9, for example, in FIG. As shown by arrows F6 and F7, the empty cans and the like that have been hit by the counterclockwise mowing blade 23c are caught by the mowing blade 23a at the forward position where the clockwise rotating blade is rotated backward.
7 will surely be repelled.

[Other Embodiments] FIG. 10 shows another embodiment of the weeding device according to the present invention, and the mowing blade 2 located at the right end of the housing 9 in the forward direction.
3b is rotated counterclockwise in a plan view, and the remaining mowing blades 23a and 23c are rotated clockwise so that the housing 9 is rotated.
In such a manner that the counterclockwise mowing blade 23b hits the remaining mowing blades 23a, 23c and repels the lumped objects such as empty cans, pebbles, and wood chips toward the rear. are doing.

Now, when the housing 9 is moved forward F, the clockwise rotating left mowing blade 23a or the intermediate mowing blade 23c hits an empty can or pebbles and the like, and is hit in the direction indicated by the arrow F6. Suppose you skipped. The splashed empty cans and pebbles are captured by the grass cutting blade 23b as the housing 9 advances F because the grass cutting blade 23b located at the right end rotates counterclockwise as described above. Then, in the housing 9, it is rebounded toward the rearward direction indicated by the arrow F <b> 7 (toward the rear opening 17), and is mixed with the cut grass, etc. From the opening 17, the cover pieces 29 are sequentially and safely discharged in a state of being lifted.

In this embodiment, three rotating shafts 2
Since 2a, 22b, and 22c are arranged at substantially the apexes of an isosceles triangle, the mowing blade 2 rotates counterclockwise.
Prevention of scattering of empty cans, pebbles and the like by 3b can be effectively achieved in the same manner as described above.

In the weeding device according to the present invention, the edge portions of the adjacent mowing blades in a rotating state can be rotated in a crossed state so as not to collide with each other. While rotating clockwise in a plan view, the remaining rotating blades rotate counterclockwise, and the clockwise mowing blade hits the remaining mowing blades and is crushed and crushed, such as empty cans, pebbles, and pieces of wood. The mowing blades are configured to repel objects in a rearward direction, or can be rotated so that the edge portions of adjacent mowing blades in a rotating state cross each other and do not abut against each other. While the mowing blade at the right end rotates counterclockwise in plan view, the remaining rotating blade rotates clockwise, and the counterclockwise mowing blade hits the remaining mowing blade and is thrown away by an empty can or After clumps such as pebbles and pieces of wood If it is configured to rebound in the direction, it may be configured to have two rotating shafts and fixed mowing blades on each rotating shaft, or to have four or more rotating shafts. In some cases, a mowing blade is fixed to each rotating shaft.

[0028] The mowing blade may be configured as a disk-shaped blade having a cutting portion provided on a peripheral portion.

[0029]

According to the present invention, weeding can be performed safely, reliably and efficiently. This will be specifically described below. According to the weeding device of the present invention, the grass introduced into the housing can be surely and efficiently weeded by the plurality of mowing blades whose edge portions rotate in an intersecting state, as well as the scattering existing at the left end or the right end. The prevention mowing blade catches the spattered empty cans, pebbles, wood chips, and other clumps hitting the remaining mowing blades, and can bounce it back in the housing. Therefore, it is possible to surely prevent the scattering of clumps such as empty cans, pebbles, and wood chips as in the case of weeding with a conventional brush cutter, thereby ensuring the safety of the weeding operation.

In particular, when the number of rotation axes is set to three and each rotation axis is located at the approximate vertex position of an isosceles triangle, as an example, the rotation axis is located at the left end in the forward direction of the housing and clockwise. Prevention of scattering of empty cans, pebbles, and the like by the rotating grass cutting blade is effectively performed as follows. That is, the rightmost mowing blade that rotates counterclockwise is the same as the leftmost mowing blade that rotates clockwise, even though the position viewed in the front-rear direction is the same, because the two mowing blades are separated. In consideration of the forward movement of the housing, the empty cans and the like that have been hit by the counterclockwise mowing blade are captured by the mowing blade at the advanced position that rotates clockwise, and are reliably bounced rearward. become. And the middle mowing blade is close to the clockwise mowing blade, but in order to be at the rear position of the clockwise mowing blade, considering the advance of the housing,
The empty cans and the like that have been hit by the counterclockwise mowing blade are captured by the mowing blade at the forward position that rotates clockwise, and are reliably bounced rearward.

By configuring the rotating mowing blade so as not to protrude from the opening at the front of the housing, a highly safe weeding device can be configured.

When a sliding plate which is long in the front-rear direction and whose front end portion is bent obliquely upward toward the front is provided at the lower ends of the left and right side plate portions, the casing is smoothly slid on a slope or the like to effectively weed the grass. You can do it.

When the weeding device according to the present invention can be attached to the distal end portion of the arm member of the backhoe, the weeding device is accurately applied to an inclined surface such as a slope with the expansion and contraction operation of the arm member and the hydraulic cylinder. In addition, the weeding device can be freely moved by running the backhoe, so that the weeding operation can be performed efficiently. As described above, when the weeding device according to the present invention is attached to the backhoe, it is possible to perform the weeding operation on a slope or a place with poor scaffolding, which is conventionally accompanied by extremely dangerous, safely, reliably, and efficiently. Becomes In particular, when the connecting portion to the arm member is configured to be rotatable around an axis substantially parallel to the axis of the rotating shaft and can be fixed to the substrate portion in a required rotating state, By adjusting the angle, the posture of the weeding device can be made appropriate and weeding can be performed efficiently.

[Brief description of the drawings]

FIG. 1 is a side view showing a weeding device according to the present invention in a used state.

FIG. 2 is a perspective view showing a weeding device.

FIG. 3 is a perspective view of the weeding device as viewed from a lower surface side.

FIG. 4 is a front view of the weeding device in use.

FIG. 5 is a plan view showing the weeding device with its substrate partly cut away.

FIG. 6 is a perspective view showing a drive unit of the weeding device.

FIG. 7 is an exploded perspective view showing a configuration of a mounting portion of the weeding device.

FIG. 8 is a plan view showing a state in which a mounting direction of a connecting portion constituting the mounting portion is changed.

FIG. 9 is a plan view of a weeding device illustrating a function of preventing scattering of an empty can or the like, with a part of a substrate portion cut away.

FIG. 10 is a plan view showing another embodiment of the weeding device according to the present invention, together with its scattering prevention action, with a part of a substrate portion cut away.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 Weeding device 2 Backhoe 3 Arm member 5 End part of arm member 6 Slope 7 Attachment part 9 Housing 10 Mowing part 11 Drive part 12 Substrate part 13 Side plate part 14 Front opening part 17 Rear opening part 20 Sliding plate 22 Rotating shaft 23 Mowing blade 39 Connecting part

Claims (8)

[Claims] 1. A lawn mowing part is provided inside a housing having a lower part, a front part, and a rear part which are open at the right and left sides of a substrate part, and a front part and a rear part are opened. The grass introduced from the open part of the section is cut off by the mowing section and is discharged from the rear open section,
A plurality of rotating shafts are provided in parallel with a required interval in the left-right direction so as to protrude downward in the housing, and a mowing blade is fixed to each rotating shaft to rotate the rotating shaft. So that each mowing blade is forcibly rotated, and the edge portions of adjacent mowing blades in a rotating state can be rotated in an intersecting state so as not to collide with each other. The mowing blade at the left end in the forward direction rotates clockwise in plan view, and the other rotating blades rotate counterclockwise, and the clockwise mowing blade hits the remaining mowing blades and is splashed. A weeding device characterized in that a lump of objects such as empty cans, pebbles, and pieces of wood is bounced rearward in a housing. 2. A lawn mowing part is provided in a housing having side plates provided on both left and right sides of the substrate portion facing each other and having a lower part, a front part, and a rear part opened. The grass introduced from the open part of the section is cut off by the mowing section and is discharged from the rear open section,
A plurality of rotating shafts are provided in parallel with a required interval in the left-right direction so as to protrude downward in the housing, and a mowing blade is fixed to each rotating shaft to rotate the rotating shaft. So that each mowing blade is forcibly rotated, and the edge portions of adjacent mowing blades in a rotating state can be rotated in an intersecting state so as not to collide with each other. The mowing blade at the right end in the forward direction rotates counterclockwise in plan view, and the other rotating blades rotate clockwise, and the clockwise mowing blade hits the remaining mowing blade and is repelled. A weeding device characterized in that a lump of objects such as empty cans, pebbles, and pieces of wood is bounced rearward in a housing. 3. The rotating shaft is set to three, and the rotating shafts at both ends located on the front side are arranged so as to be adjacent to each other on the left and right, while the rotating shaft located at the center is arranged behind the rotating shafts at both ends, Each rotation axis is configured so as to be located at a substantially apex position of an isosceles triangle, and the edge portions of adjacent mowing blades in a rotating state can be rotated in an intersecting state and without abutment, and The blade at the left end in the forward direction of the housing rotates clockwise in plan view, and the other rotating blades rotate counterclockwise. The clockwise blade contacts the remaining blade. 2. The weeding apparatus according to claim 1, wherein the spattered empty cans, pebbles, pieces of wood or the like are bounced rearward in the housing. 4. The rotating shaft is set to three, and the rotating shafts at both ends located on the front side are arranged so as to be adjacent to each other on the left and right, while the rotating shaft located at the center is arranged behind the rotating shafts at both ends, Each rotation axis is configured so as to be located at a substantially apex position of an isosceles triangle, and the edge portions of adjacent mowing blades in a rotating state can be rotated in an intersecting state and without abutment, and The mowing blade at the right end in the forward direction of the housing rotates counterclockwise in plan view, and the other rotating blades rotate clockwise, and the counterclockwise mowing blade is the remaining mowing blade. 3. The weeding apparatus according to claim 2, wherein the batters such as empty cans, pebbles, and wood chips that have been blown off are bounced rearward in the housing. 5. The slide plate according to claim 1, wherein a slide plate which is long in the front-rear direction and whose front end portion is bent obliquely upward toward the front is provided at the lower ends of the left and right side plate portions. Weeding equipment. 6. The weeding device according to claim 1, wherein all the rotating mowing blades are provided so as not to protrude from an opening at a front portion of the housing. 7. The weeding apparatus according to claim 1, wherein a connecting portion is provided on an upper surface side of the substrate portion to connect to a tip portion of the arm member of the backhoe. 8. A connecting portion is provided on the upper surface side of the substrate portion to a tip portion of the arm member of the backhoe, and the connecting portion can rotate around an axis substantially parallel to the axis of the rotating shaft, and The weeding device according to any one of claims 1 to 6, wherein the device can be fixed to the substrate portion in a rotating state.