JP2010172220A - Tending machine - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a technique which can attach a leveling plate to a rotary cover in a simple structure, and can easily be switched into a leveling work or a levee-forming work. <P>SOLUTION: The tending machine is characterized by laterally disposing cover side engaging portions 23a, 23b, 23c having approximately U-shapes on the side view at prescribed distances on the rear end side of a rotary cover 23, disposing leveling plate side engaging portions 52b, 52c, 53c having approximately reverse U-shapes on the front end side of the leveling plate 51 between the cover side engaging portions 23a (23b) (23c) and the cover side engaging portions 23a (23b) (23c) and detachably supporting the cover side engaging portions 23a, 23b, 23c and the leveling plate side engaging portions 52b, 52c, 53c with a fulcrum shaft 55. <P>COPYRIGHT: (C)2010,JPO&INPIT

Description

  The present invention relates to a flat plate technology provided at the rear part of a rotor cultivator installed at the rear part of a management machine.

2. Description of the Related Art Conventionally, in a farming work or the like in a farm field, a walking type management machine is known in which a rotor cultivator equipped with a rotary composed of a plurality of cultivating claws is attached to the rear part of the machine and a flat plate is attached to the rear part of the rotor cultivator. It has been.
The management machine has a structure in which a hinge part is provided at the rear part of the rotary cover covering the upper part of the rotary, a rear cover is provided so as to be rotatable up and down via the hinge part, and a leveling plate is continuously provided on the rear cover. In the plowing work, the worker advances the machine body and leveles the surface layer portion of the field using a leveling plate (see, for example, Patent Document 1).

Japanese Patent No. 2709780

Thus, in the case of a management machine as shown in the above-mentioned “Patent Document 1”, the rear cover is attached via a hinge part, and the flat plate is attached to the rear end of the rear cover by a fixing member. In order to perform the leveling work, a separate flat plate is required, and an installation work is required. Further, to perform the uprighting work, it is necessary to remove the leveling plate and attach the uprighting machine. Moreover, in order to attach a rear cover, a hinge component is required, and the attachment was performed using the tool.
Accordingly, an object of the present invention is to provide a technique in which a leveling plate is attached to a rotary cover with a simple structure so that a leveling operation and a setting operation can be easily switched.

  The problem to be solved by the present invention is as described above. Next, means for solving the problem will be described.

  That is, in the first aspect of the present invention, in a management machine including a rotary cover that covers the upper portion of the rotary of the rotor cultivating device, the rotor cultivating device is disposed at the rear of the traveling unit. Is provided with a substantially U-shaped cover side latching portion at a predetermined interval in a side view, and is arranged between the cover side latching portion and the cover side latching portion on the front end side of the flat plate. An inverted U-shaped flat plate side latching portion is provided, and the cover side latching portion and the flat plate side latching portion are detachably supported by a fulcrum shaft.

  In Claim 2, the said flat plate is arrange | positioned at the left-right both sides of the 1st flat plate arrange | positioned at the left-right center of the body, and is supported rotatably with respect to the said 1st flat plate. The fulcrum shaft is slidably disposed in the axial direction, and the fulcrum shaft is removed from the flat plate side latching portion provided on the second flat plate. Thus, the second flat plate can be rotated rearward.

  In Claim 3, A fixing member is provided in the lower end part of the plowing depth adjustment bar provided in the rear part of the rotor plowing device so that it can slide up and down, and this fixing member can be fixed to the rear surface lower end part of the leveling plate. To do.

  As effects of the present invention, the following effects can be obtained.

  According to the first aspect of the present invention, it is possible to easily attach the flat plate to the rotary cover with a simple structure without requiring a separate hinge member, and the cost can be reduced.

  According to the second aspect of the present invention, it is not necessary to separately prepare and attach a vertical work machine, and it is possible to easily switch between the tilling work and the vertical work without using a tool.

  According to the third aspect of the present invention, the shape of the upright work machine can be easily changed without requiring a tool, and the plowing work and the upright work can be easily switched.

The side view which showed the whole structure of the management machine which concerns on one Example of this invention. The rear view which showed the whole structure of the flat plate. The rear view which showed the structure of the left side part of a flat plate. It is the figure which showed the cross section of the flat plate upper part of the fulcrum shaft vicinity, (a) is a cross-sectional side view seen from arrow AA 'in FIG. 3, (b) is the cross section seen from arrow BB'. Side view, (c) is also a sectional side view as seen from the arrow CC ', (d) is a sectional side view as seen from the arrow DD', (e) is also seen from the arrow EE '. (F) is a sectional side view seen from the arrow FF ′, and (g) is a sectional side view seen from the arrow GG ′. The rear view which similarly showed the sliding state of the fulcrum shaft. The rear view which showed the bending state of the flat plate. The side view which showed the cultivation work part vicinity.

Next, embodiments of the invention will be described.
[Overall configuration of management machine 1]
First, the overall configuration of the management machine 1 according to the present embodiment will be described with reference to FIG.
The management machine 1 has a mission unit 2 at the front and rear center, a motor unit 3 at the front, and a rotor tiller 5 at the rear. The mission unit 2 is formed in a generally U-shape when viewed from the side. A lower portion on the front side of the mission unit 2 is a traveling unit 4, and a handle 26 extends from the front and rear center upper part of the mission unit 2 to the upper rear portion. The rear part is an operation unit 6.

  An input shaft 11 projects from the left side surface of the mission unit 2, a transmission mechanism is housed inside the mission unit 2, and the driving force of the prime mover unit 3 is transmitted to the input shaft 11, via the transmission mechanism. It is transmitted to the traveling unit 4 and the rotor tiller 5.

  The prime mover unit 3 includes a prime mover mounting table 12 attached to the front part of the mission unit 2, a prime mover 13 mounted on the top of the prime mover mounting table 12, and the like.

  The traveling unit 4 includes axles 16 and 16 that are supported in the left and right horizontal direction at the front lower portion of the mission unit 2 and wheels 17 and 17 that are fixedly provided at both left and right ends of the axles 16 and 16.

  The rotor tilling device 5 includes a tilling claw shaft 18 supported in the left and right horizontal direction at the rear lower portion of the mission unit 2, a plurality of tilling claws 20, 20... Consists of a rotary cover 23 and the like. Further, the rotary claw shaft 18 and the plurality of tilling claws 20, 20.

  The rotary cover 23 covers the upper part of the rotation trajectory 22 of the tilling claws 20, 20... A flat plate 51, which will be described later, is suspended on the rear part of the rotary cover 23 via a fulcrum shaft 55 so as to be swingable back and forth. Established.

  A support bracket 24 extends rearward and upward from the rear part of the transmission unit 2, and a tilling depth adjusting bar 25 is attached to the support bracket 24 so that the vertical position can be adjusted. The plowing depth adjustment bar 25 is for adjusting the plowing depth when working with the rotor plowing device 5, and also functions as a residual tillage processing tool for plowing the remaining plowing portion at the left and right center. It also has.

  A bottom plate 19 protruding rearward is provided at the lower end portion of the tilling depth adjustment bar 25, and a fixing member 56 is provided at the rear end portion of the bottom plate 19. The fixing member 56 is for fixing the lower end portion of the left and right center of the flat plate 51.

  The operation part 6 is formed in a substantially gate shape in plan view, and a handle 26 whose front part is fixed to the front and rear center part of the mission part 2; a clutch lever 27 attached to the rear end part of the handle 26; A transmission lever 28 and the like projecting rearward and upward from the front and rear central portions of the mission unit 2 are provided.

[Flat plate 51]
Next, details of the flat plate 51 according to the present invention will be described with reference to FIGS. In addition, the arrow Z in FIG. 4 shows the front, and the left-right direction is prescribed | regulated based on this below.

  The flat plate 51 is attached to the rear end side of the rotary cover 23. That is, the rear end side of the rotary cover 23 is provided with cover side latching portions 23 a, 23 b, 23 c that are formed in a substantially U shape with a predetermined interval in the left-right direction. The flat plate side latching portions 52b, 52c, and 53c formed in a substantially inverted U shape when viewed from the side are provided at predetermined intervals.

  Flat plate side latching portions 52b, 52c, and 53c are disposed between the cover side latching portions 23a, 23b, and 23c and the cover side latching portions 23a, 23b, and 23c. In other words, in the attached state, the cover side latching portions 23a, 23b, and 23c and the flat plate side latching portions 52b, 52c, and 53c are alternately arranged.

  In this way, by inserting the fulcrum shaft 55 with the cover side hooking portions 23a, 23b and 23c and the flat plate side hooking portions 52b, 52c and 53c alternately aligned in the left and right axis, It is possible to support the leveling plate 51 at the rear part of 23 so as to be able to rotate back and forth (up and down).

  The leveling plate 51 can be removed from the rotary cover 23 by removing the fulcrum shaft 55 from the cover side latching portions 23a, 23b, and 23c and the leveling plate side latching portions 52b, 52c, and 53c. Yes, the flat plate 51 can be easily attached and detached from the rotary cover 23.

As shown in FIG. 2, the flat plate 51 includes a first flat plate 52 disposed at the center of the left and right sides of the machine body, and second flat plates 53R and 53L disposed on the left and right sides of the first flat plate 52. Consists of.
First, the first flat plate 52 will be described.
The first flat plate 52 is composed of a plate member formed in a reverse trapezoidal shape in rear view. In the present embodiment, the first flat plate 52 is divided into left and right sides and is configured to be bilaterally symmetric. Therefore, the left first flat plate 52 will be described.
In the present embodiment, the first flat plate 52 is divided at the center of the left and right. However, the present invention is not limited to this, and may be formed integrally.

  A cylindrical hinge member (cylindrical member) 52a is provided in the middle of the lateral side (slope side) of the first flat plate 52 on the outer side in the left-right direction of the machine body. A first flat plate side latching portion 52b is provided on the left and right center side, and a second flat plate side latching portion 52c is provided at a predetermined interval from the first flat plate side latching portion 52b.

  As shown in FIG. 3 and FIG. 4A, the first flat plate side latching portion 52b protrudes upward from the upper side of the first flat plate 52 on the left and right center side of the body, and is substantially U-shaped in side view. The inner space is configured to be able to accommodate a fulcrum shaft 55 described later. That is, the curvature radius of the first flat plate side latching portion 52 b is configured to be slightly larger than the radius of the fulcrum shaft 55.

  Moreover, as shown in FIG.4 (c), the 2nd flat plate side latching | locking part 52c protrudes a rectangular piece upward from the upper side of the left-right outer side of the body of the 1st flat plate 52, and is substantially L-shaped in side view. It is bent rearward. The radius of curvature of the bent portion is slightly larger than the radius of the fulcrum shaft 55.

  Thus, the first flat plate side latching portion 52b and the second flat plate side latching portion 52c are provided on the upper side of the first flat plate 52, and the flat plate side latching portions 52b and 52c. The bending center (or bending portion) of the bending portion is arranged so as to be on the same straight line extending in the horizontal direction of the body.

Next, the second flat plates 53R and 53L will be described.
The second flat plates 53R and 53L are formed so that the plate material is substantially trapezoidal, and has a hypotenuse on the left and right center side of the fuselage, and the angle and length of the hypotenuse are the angle and length of the hypotenuse of the first flat plate 52. The flat plate 51 as a whole has a rectangular shape.

  Since the second flat plates 53R and 53L on the left and right sides are formed so as to be bilaterally symmetric with respect to the center of the fuselage, the second flat plate 53L on the left side will be described in detail below, and the second flat plate 53R on the right side will be described. Description is omitted.

  Two cylindrical members 53a and 53a are fixed at predetermined intervals in the middle of the oblique side of the second flat plate 53L. The intervals between the cylindrical members 53a and 53a are arranged on both sides of the cylindrical member 52a provided on the first flat plate 52, and the inner diameters of the cylindrical members 53a and 53a and the cylindrical member 52a are arranged. Are substantially the same and are arranged on the same axis and inserted with a rotation shaft 54, and the second flat plate 53L is rotatably connected to the first flat plate 52.

  At both ends (or one end) of the rotating shaft 54, torsion coil springs 30 and 30 as urging means are provided on the rotating shaft 54, and the torsion coil springs 30 and 30 provide a second The flat plate 53L is urged so as to rotate forward.

A third flat plate side latching portion 53c is provided at the left and right center of the upper side of the second flat plate 53L.
That is, as shown in FIG. 4 (e), the third flat plate side latching portion 53c protrudes upward from the left and right center of the upper side of the second flat plate 53L and downwards in an inverted U shape in side view. The bent portion (curved portion) is formed so that the radius of curvature of the bent portion (curved portion) is slightly larger than the radius of the fulcrum shaft 55.

  Further, the bending center of the curved portion of the third flat plate side latching portion 53c is provided so as to be in the horizontal direction of the fuselage, and is substantially collinear with the bending center of the flat plate side latching portions 52b and 52c. It arrange | positions so that it may become.

[Mounting structure of flat plate 51]
Next, details of the mounting structure of the flat plate 51 will be described with reference to FIGS.
On the rear lower side of the rotary cover 23, the first cover side latching portions 23a and 23a, the second cover side latching portions 23b and 23b, and the third cover side latching are directed outward from the center of the machine body. The parts 23c and 23c are provided symmetrically.

  As shown in FIG. 4 (b), the first cover side latching portions 23a and 23a are bent so that the front is opened in a substantially U shape in a side view at the left and right central portions of the rear lower side of the rotary cover 23. The radius of curvature of the bent portion is formed to be slightly larger than the radius of the fulcrum shaft 55. The first cover side hooking portion 23a is disposed between the first flat plate side hooking portion 52b and the second flat plate side hooking portion 52c.

  The third cover side latching portion 23c is arranged on the outermost side of the rear lower side of the rotary cover 23, and the second cover side latching portion 23b is arranged inside the machine body with a predetermined interval. That is, the third flat plate side latching portion 53c is disposed between the second cover side latching portion 23b and the third cover side latching portion 23c.

  As shown in FIGS. 4D and 4F, the second cover side latching portion 23b and the third cover side latching portion 23c are substantially U-shaped in a side view from the rear lower side portion of the rotary cover 23. The curvature radius of the curved portion is formed to be slightly larger than the radius of the fulcrum shaft 55.

  Thus, on the lower lower side of the rotary cover 23, the first cover side latching portions 23a, 23a, the second cover side latching portions 23b, 23b, the third cover side latching portions 23c, 23c, Is provided symmetrically with respect to the center of the fuselage, and the curvature centers of the curved portions formed in the cover side latching portions 23a, 23a, 23b, 23b, 23c, and 23c are on the same straight line in the horizontal direction of the fuselage. Arranged.

Next, the fulcrum shaft 55 will be described.
The fulcrum shaft 55 is made of a round bar member, and the two left and right fulcrum shafts 55 have the centers of the curved portions of the cover side latching portions 23a, 23b, and 23c and the flat plate side latching portions 52b, 52c, and 53c, respectively. The upper portion of the flat plate 51 is pivotally supported by the rear portion of the rotary cover 23.

  A gripping portion 55a protruding in a right angle direction is formed at the longitudinal center of the fulcrum shaft 55, and the gripping portion 55a is located at a portion where the second flat plate side latching portion 52c is disposed in the attached state. Configured as follows.

  That is, on the left side (or right side) of the rear lower side of the rotary cover 23, the second flat plate 53L (53R) is provided between the third cover side latching portion 23c and the second cover side latching portion 23b. A third flat plate side hook portion 53c is provided, and a second flat plate side hook portion 52c is provided between the second cover side hook portion 23b and the first cover side hook portion 23a. The first flat plate side latching portion 52b is disposed on the side of the center side of the body of the first cover side latching portion 23a.

  These cover side latching portions 23 a, 23 b, and 23 c and the leveling plate side latching portions 52 b, 52 c, and 53 c are alternately arranged, so that the leveling plate 51 is placed behind the rotary cover 23 by the fulcrum shaft 55. It is suspended from the lower end.

  That is, the cover-side latching portions 23a, 23b, and 23c and the flat plate-side latching portions 52b, 52c, and 53c are the rear lower end portions of the rotary cover 23 without using conventional hinges for welding pipes or fixing them with screws or the like. Further, protrusions are provided alternately on the upper end of the flat plate 51 in the left-right direction, and the protrusions are bent in a substantially U shape in opposite directions to form the cover side latching portions 23a, 23b, 23c and the flat plate. By forming the side latching portions 52b, 52c, and 53c, they are hooked on the fulcrum shaft 55, and the upper end portion of the flat plate 51 can be swingably locked to the rear lower end portion of the rotary cover 23. is there.

  The flat plate 51 can be attached and detached in a state of being substantially perpendicular to the rear portion of the rotary cover 23 in a state where the fulcrum shaft 55 is locked to the cover side latching portions 23a, 23b, and 23c. Since this state is a position that does not rotate during work, the leveling plate 51 does not come off during normal work.

  The longitudinal dimension of the fulcrum shaft 55 is shorter than the distance from the left and right center of the machine body to the left and right sides of the flat plate 51. Specifically, one end of the fulcrum shaft 55 is positioned at the left and right center of the machine body. In this case, the other end is formed so as to be positioned on the outer side of the body of the second cover side latching portion 23b.

  The fulcrum shaft 55 is slidable in the left-right width range between the second cover side latching portion 23b and the first cover side latching portion 23a. When the gripping portion 55a is positioned on the left side (shown in the upper part of FIG. 5), the fulcrum shaft 55 is locked to the cover side latching portions 23a, 23b, and 23c and the flat plate side latching portions 52b, 52c, and 53c. In this state, the first flat plate 52 and the second flat plates 53R and 53L rotate back and forth integrally.

  Next, in a state where the gripping portion 55a is positioned on the inner side (right side in FIG. 3) (shown in the lower stage of FIG. 5), the fulcrum shaft 55 is connected to the third cover side latching portion 23c and the third flat plate. The second flat plates 53R and 53L are separated from the side hooks 53c and locked to the cover side hooks 23a and 23b and the flat plate side hooks 52b and 52c. It becomes possible to rotate backward about 54.

  Further, on the rear surface of the rear lower portion of the rotary cover 23, in the vicinity of the second flat plate side hooking portion 52c, a fulcrum shaft 55 is connected to the cover side hooking portions 23a, 23b, 23c and the flat plate side hooking portion 52b. Fixing means 29 for fixing the gripping portion 55a at a position where 52c and 53c are locked is provided.

  That is, as shown in FIG. 3, the fixing means 29 is composed of two plate members 29a and 29a protruding rearward and a lock pin 29b made of a bolt, a round bar member, etc. The members 29a and 29a are previously provided with through holes penetrating in the left-right direction of the machine body.

  Then, the grip portion 55a is disposed between the plate members 29a and 29a, and the lock pin 29b is inserted and fixed to the plate members 29a and 29a at a position outside the grip portion 55a. 55a cannot be rotated around the axis of the fulcrum shaft 55 and can be fixed, and the fulcrum shaft 55 cannot slide in the axial direction.

  The configuration of the fixing means 29 is not limited to the configuration of the present embodiment, and for example, a clamp mechanism or the like may be provided to hold the grip portion 55a in an upwardly extending posture. Any mechanism that holds the sliding movement of the fulcrum shaft 55 in the axial direction may be used.

  Thus, in the present invention, the rotor cover 5 is disposed at the rear of the traveling unit 4, and in the management machine 1 including the rotary cover 23 covering the rotary 21 of the rotor tiller 5, the rotary cover 23 On the rear end side, cover side hooking portions 23a, 23b, 23c having a substantially U shape in side view are provided at predetermined intervals in the left-right direction, and the cover side hooking portion 23a ( 23b) (23c) and cover-side latching portions 23a (23b) (23c) are provided with flat plate-side latching portions 52b, 52c, and 53c that are substantially U-shaped when viewed from the side. The latching portions 23a, 23b, and 23c and the flat plate side latching portions 52b, 52c, and 53c are detachably supported by the fulcrum shaft 55.

  By having such a configuration, conventionally, in order to provide the flat plate 51 at the rear part of the rotary cover 23, a hinge part is required, which increases the number of parts and is costly. The flat plate 51 is attached to the rotary cover 23 using only the fulcrum shaft 55 without using bolts or the like through a plurality of hooks 23a... 52b formed in advance on the rotary cover 23 and the flat plate 51. Can be installed on. Therefore, the mounting structure can be realized with a small number of parts, and the number of assembling steps can be reduced, which is economical.

  In the present invention, the flat plate 51 is disposed on the left and right sides of the first flat plate 52 and the first flat plate 52 disposed at the center of the left and right sides of the machine body. The fulcrum shaft 55 is slidably disposed in the axial direction and is supported by the second uniform plates 53R and 53L. By removing the fulcrum shaft 55 from the flat plate side latching portion 53c, the second flat plates 53R and 53L can be rotated rearward of the machine body.

  By setting it as such a structure, it becomes possible to perform the uprighting work with the flat plate 51 used at the time of tillage, without providing the upright parts separately. As a result, it is possible to easily switch between tilling work and raising work without the need for tools.

  That is, there is no need to attach or detach the hinge part using a tool or the like, and the fulcrum shaft 55 is slid in the axial direction to remove the fulcrum shaft 55 from the third flat plate side latching portion 53c. Only by this, the second flat plates 53R and 53L on the left and right sides can be easily rotated backward. As a result, the surface layer portion of the field is leveled and leveled by the leveling plate 51 having such a state, so that the second leveling plate is pushed against the urging force of the torsion coil springs 30, 30. 53L and 53R are rotated rearward, and the shape of the flat plate 51 as a whole becomes a reverse trapezoidal shape when viewed from the front, and can be formed on both the left and right sides of the machine body.

[Fixed structure of flat plate 51]
Next, details of a fixing structure for fixing the leveling plate 51 in a state of facing downward during leveling work by the leveling plate 51 according to the present invention will be described with reference to FIG.
The fixing means for the flat plate 51 is provided at the lower end of the tilling depth adjusting bar 25.

  The plowing depth adjusting bar 25 is formed of a rod-like member extending in the vertical direction, and is slidably inserted into the support bracket 24 from below. A plurality of semicircular recesses in a side view are provided on the front surface portion of the tilling depth adjustment bar 25 with a constant interval, and a part of the recesses penetrates the side surface of the support bracket 24 in the left-right direction. By being hooked by the fixing pin 9, the tilling depth adjustment bar 25 is fixedly held by the support bracket 24.

  A flat bottom plate 19 is provided at the lower end of the tilling depth adjustment bar 25 so as to protrude rearward. The bottom plate 19 is formed in a trapezoidal shape that narrows forward in plan view, and is welded to the tilling depth adjustment bar 25 in a substantially right angle direction in side view.

  A fixing member 56 protruding upward is welded to the left and right center of the rear end portion of the bottom plate 19 (see FIGS. 2 and 6), and the tilling depth adjustment bar 25 is slid upward from the lowest position. As a result, the fixing member 56 also moves upward integrally, and the fixing member 56 is hooked on the lower end of the rear surface of the flat plate 51, that is, the lower end of the rear surface of the second flat plate 53, 53. Is fixedly held. And it is the structure which is pushed by the soil at the time of a standing work, and the leveling plate 51 does not float up rearward.

  As described above, in the present invention, the fixing member 56 is provided at the lower end portion of the tilling depth adjusting bar 25 that is slidable in the vertical direction at the rear portion of the rotor tiller 5, and the fixing member 56 is attached to the leveling plate 51. The rear end of the rear surface is configured to be fixable.

  By adopting such a configuration, the flat plate 51 can be fixed and held with a simple structure without providing any other mechanism, which is economical.

DESCRIPTION OF SYMBOLS 1 Management machine 4 Traveling part 5 Rotor plowing device 21 Rotary 23 Rotary cover 23a First cover side latching part 23b Second cover side latching part 23c Third cover side latching part 25 Plowing depth adjustment bar 51 Flat plate 52 First Flat plate 52b First flat plate side hook portion 52c Second flat plate side hook portion 53c Third flat plate side hook portion 53R Second flat plate 53L Second flat plate 53c Third flat plate side hook portion 55 Support point Shaft 56 fixing member

Claims (3)

A rotor tiller is arranged at the rear of the running section,
In a management machine provided with a rotary cover that covers the upper part of the rotary of the rotor cultivator,
On the rear end side of the rotary cover, a cover side hooking portion having a substantially U shape in side view with a predetermined interval in the left-right direction is provided,
On the front end side of the flat plate, a flat plate side hooking portion having a substantially inverted U shape as viewed from the side is provided between the cover side hooking portion and the cover side hooking portion.
The management machine, wherein the cover side latching portion and the flat plate side latching portion are detachably supported by a fulcrum shaft. The flat plate is a first flat plate disposed at the center of the left and right sides of the aircraft,
A second flat plate disposed on both left and right sides of the first flat plate and rotatably supported with respect to the first flat plate;
Consisting of
The fulcrum shaft is slidably disposed in the axial direction,
The second flat plate can be rotated rearward of the machine body by removing the fulcrum shaft from a flat plate side latching portion provided on the second flat plate. Management machine. In the rear of the rotor tiller,
A fixing member is provided at the lower end of the tilling depth adjustment bar that is slidable up and down,
The management machine according to claim 1, wherein the fixing member is configured to be fixable to a lower end portion of a rear surface of the flat plate.

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