JP6144141B2 - Pricking machine - Google Patents

Description

  The present invention relates to a scraping work machine that is attached to the rear part of a traveling machine body and advances along with the traveling of the traveling machine body while a tilling rotor is rotated by power transmitted from the traveling machine body to perform a padding work for paddy fields.

  In such a plowing work machine, for example, a tilling rotor (rotary working body in the embodiment) having a plurality of tilling claws is rotatably provided on the working machine body (machine frame in the embodiment), and an upper portion of the tilling rotor A cover body is provided on the work machine body, and a first leveling plate (first leveling body in the embodiment) is provided at the rear end of the cover body so as to be swingable in the vertical direction. 2. Description of the Related Art A second leveling plate (second leveling body in the embodiment) is provided at the end so as to be swingable in the vertical direction (see Patent Document 1).

  At the time of the plowing work by the plowing work machine, the cultivated soil cultivated by the cultivating claws of the cultivating rotor is discharged to the first leveling plate side and leveled by the first leveling plate and the second leveling plate. Here, the muddy water released to the first leveling plate side is pushed forward by the first leveling plate moving to the front side in the traveling direction, and the straw trapped in the cultivated soil by the cultivating claws of the cultivating rotor is lifted. It is made to stay between a tilling rotor and a 1st leveling board. And the straw will be washed away to the side of the scraping work machine by the muddy water flowing to the side of the first leveling board.

  Therefore, in the conventional scraping work machine, a discharge port is provided between the first leveling plate and the second leveling plate to discharge muddy water released to the first leveling plate side to the rear side, A rake extending rearward is provided below the front side and the second leveling board, and the straw to be lifted is pushed into the cultivated soil.

JP-A-6-165605

  However, in this conventional scraping work machine, since the discharge port extends obliquely upward toward the rear, the straw and muddy water that has passed through the discharge port are discharged above the second leveling plate and pass above the second leveling plate. Resulting in.

  Therefore, the straw that has passed through the discharge port floats on the paddy field, and it is not possible to improve the burial of the entire paddy field.

  This invention is made | formed in view of such a problem, and it aims at providing the scraping work machine which can improve the burial property of the straw of the whole paddy field.

  In order to achieve the above object, a plow working machine according to the present invention includes a tilling rotor that is attached to a rear portion of a traveling machine body and that is rotated by power transmitted from the traveling machine body, and a shield that extends forward and backward covering the top of the tilling rotor. A cover, a first leveling plate swingable in the vertical direction on the rear side of the shield cover, and a second leveling swingable in the vertical direction at the rear end portion of the first leveling plate. In the surfacing work machine that includes a leveling board, and that advances as the traveling machine body moves forward while the tilling rotor rotates, the first leveling board is positioned above the bottom surface of the second leveling board. A front opening that opens, and a muddy water passage that is formed in communication with the front opening and flows muddy water flowing from the front opening to the front of the second leveling plate are provided.

  Moreover, the muddy water flow path of the present invention is characterized in that it communicates with a rear opening provided on the abdominal surface side of the first leveling plate on the rear side of the front opening.

  In addition, the rear end portion of the rear opening of the present invention faces the surface of the farm field between the first leveling plate and the second leveling plate.

  Further, in front of the front opening of the present invention, the front opening is covered in a front view, a space is formed in front of the front opening in a side view, and muddy water is passed through the space to the front opening. A front cover member for guiding is provided.

  Further, the second leveling board of the present invention is a guide that is arranged above the surface of the field between the first leveling board and the second leveling board and guides muddy water discharged from the rear opening to the surface side of the field. A member is provided.

  According to the scraping work machine according to the present invention, it is possible to provide a scraping work machine capable of improving the burial of straw in the entire paddy field by having the above-described characteristics.

The top view of the scraping work machine concerning one embodiment of the present invention is shown. The principal part fragmentary sectional view of this scraping work machine is shown. The back side perspective view of the 1st leveling board provided in the scraping work machine is shown. The front side perspective view of a 1st leveling board is shown. The front view of a 1st leveling board is shown. Sectional drawing of a 1st leveling board is shown. The principal part expanded fragmentary sectional view of a scratch working machine is shown.

  Hereinafter, a preferred embodiment of a scraping work machine of the present invention will be described with reference to FIGS. For convenience of explanation, the directions of the arrows shown in FIG. 1 will be described below as the front-rear direction and the left-right direction.

  As shown in FIG. 1 (plan view), the scraping work machine 1 includes a work machine body 10. The work machine body 10 includes a main frame 11 extending in the left-right direction, and a gear box 13 is provided at the center of the main frame 11 in the left-right direction. An input shaft 14 protrudes forward from the gear box 13 and is rotatably provided. The input shaft 14 is configured to transmit power from a PTO shaft (not shown) of the traveling machine body 90. A mast 16 protruding forward is provided above the gear box 13, and a pair of lower arms (not shown) protruding obliquely downwardly forward are provided on the main frame 11, and the mast 16 and lower arm are It is configured to be coupled to a three-point link coupling mechanism (not shown) provided at the rear portion of the traveling machine body 90.

  A chain case 19 and a support arm 20 that extend downward are opposed to both left and right ends of the main frame 11, and a scraper rotor 23 (see FIG. 2) rotates between the lower side of the chain case 19 and the support arm 20. It is supported freely. The scraper rotor 23 is configured by radially attaching a plurality of scraper claws 25 (see FIG. 2) to a rotating shaft that is rotatably supported between the chain case 19 and the support arm 20. The scraper rotor 23 has a power transmission mechanism (not shown) in which the power transmitted to the input shaft 14 of the gear box 13 is built in the main frame 11 and a power transmission mechanism (not shown) in the chain case 19. It is transmitted and rotationally driven in the downcut direction (arrow A direction in FIG. 2).

  Between the chain case 19 and the support arm 20 above the scraping rotor 23, as shown in FIGS. 1 and 2 (partial sectional view), a shield cover 30 that covers the top of the scraping rotor 23 and extends in the front-rear direction is provided. It is arranged. The shield cover 30 is attached along each of the chain case 19 and the support arm 20 and extends in the front-rear direction, and is connected between the upper portions of the pair of side plate portions 31 and curved along the rotation locus of the scraper rotor 23. The top plate part 33 is formed. The side plate portion 31 extends in the front-rear direction so as to cover the side portion of the top plate portion 33. The rear side of the side plate portion 31 extends downward from the rear side end portion of the top plate portion 33, and the lower end portion thereof extends to a position near the field surface Bs of the paddy field B.

  A first leveling plate 40 extending obliquely downward is attached to the rear side of the shield cover 30 so as to swing up and down, and a second leveling plate 60 is attached to the rear end portion of the first leveling plate 40 so as to freely swing up and down. ing.

  As shown in FIG. 2, FIG. 3 (back side perspective view) and FIG. 4 (front side perspective view), the first leveling plate 40 includes a leveling main body portion 41 covering the rear side of the scraping rotor 23, and a leveling main body portion. 41 and a pair of leveling side plate portions 43 attached to the left and right end portions of 41. A support shaft 45 extending in the left-right direction of the leveling main body 41 is provided between the upper ends of the pair of leveling side plate portions 43. The support shaft 45 is attached to the rear side of the work machine main body 10 so as to be rotatable in the vertical direction, and the first leveling plate 40 is rotatable in the vertical direction with the support shaft 45 as a rotation center.

  The leveling main body 41 is plate-shaped, and the front side is curved upward in a side view and extends downward. The rear end portion of the leveling main body portion 41 is connected with a leveling main body lower bottom portion 42 that is bent downward in a convex shape and has a curved rear side. Are integrated. The leveling main body lower side bottom portion 42 constitutes a part of the first leveling plate 40. A front opening 42 a that penetrates the leveling main body lower bottom 42 is provided at the upper part of the leveling main body lower bottom 42. The front opening 42a is provided from one end in the width direction to the other end on the left and right sides with respect to the center in the left-right direction of the bottom bottom 42 of the leveling main body.

  A hinge 47a that protrudes rearward and has an annular shape in side view is provided at the center in the width direction of the leveling main body 41. The hinge portion 47a is formed by bending a plate-shaped ventral side reinforcing plate 47, and the front side of the ventral side reinforcing plate 47 is along the ventral surfaces 41b and 42b at the center in the left-right direction of the leveling main body 41 and the leveling main body lower bottom 42. The ground leveling main body 41 and the leveling main body lower bottom 42 are fixed to the belly surfaces 41b and 42b of the leveling main body lower side 42 in a state of extending to the front side. The hinge part 47a pivotally supports the center part in the left-right direction of the second ground leveling plate 60.

  Further, a back side reinforcing plate 48 disposed opposite to the abdominal side reinforcing plate 47 is provided on the back side 41 c of the center portion of the leveling main body 41 in the left-right direction. The rear side reinforcing plate 48 extends from the rear end of the first leveling plate 40 to the front side along the lower side upper portion 49 of the leveling main body 49 and the rear surfaces 41c and 49c of the leveling main body 41, which will be described later. And it is being fixed to the back surfaces 41c and 49c of the leveling main body lower part upper part 49. FIG. This back side reinforcing plate 48 reinforces the strength of the first leveling plate 40 in combination with the ventral side reinforcing plate 47.

  As shown in FIGS. 2 and 5 (front view), the front opening 42a is formed in a rectangular shape when viewed from the front, and the first leveling plate 40 and the second leveling plate 60 are in contact with the rice field Bs of the paddy field B. Thus, the second leveling plate 60 is disposed above the bottom surface 60a. In addition, although mentioned later for details, the front side opening part 42a guides to the muddy water flow path 50 in order to flow the muddy water M ahead of the 1st leveling board 40 to the back side.

  As shown in FIG. 6, the rear end portion of the first leveling plate 40 has a predetermined interval above the leveling main body lower bottom 42 of the first leveling plate 40 so as to cover the front opening 42a. A leveling main body lower upper portion 49 extending rearward is provided. The leveling main body lower upper portion 49 constitutes a part of the first leveling plate 40. In the present embodiment, the leveling main body lower upper portion 49 is integrated with the first leveling plate 40, but the leveling main body lower upper portion 49 is formed separately from the first leveling plate 40 and connected thereto. May be.

  The leveling main body lower upper portion 49, together with the leveling main body lower bottom portion 42 and the leveling side plate portion 43, forms a bag-shaped inner space S in a region surrounded by these. In the side view, the inner space portion S is formed such that the width in the vertical direction increases as it advances toward the rear side, and the width in the vertical direction decreases as it advances toward the rear side. Communicating with Between the rear end portion of the leveling main body lower upper portion 49 and the rear end portion of the leveling main body lower bottom portion 42, a rear opening portion 41d that opens in a rectangular shape in the rear view is formed. In addition, the inner side space part S is not restricted to a bag shape in side view, A rectangular shape etc. may be sufficient.

  The inner space portion S has a front end portion communicating with the front side opening portion 42a and a rear end portion communicating with the rear side opening portion 41d to form a muddy water channel 50 through which muddy water can flow.

  As shown in FIGS. 2 and 6, the rear end portion 49a of the leveling main body lower upper portion 49 connected to the rear side opening 41d is such that the first leveling plate 40 and the second leveling plate 60 are grounded to the surface Bs of the paddy field B. In the state, it is formed so as to face obliquely downward so that muddy water is discharged onto the surface Bs between the first leveling plate 40 and the second leveling plate 60. For this reason, when muddy water flows in from the front side opening 42a, this muddy water flows through the muddy water channel 50 and is discharged from the rear side opening 41d toward the surface Bs.

  As shown in FIGS. 5 and 6, the front opening 42a covers the front opening 42a in a front view, and forms a front space F in front of the front opening 42a in a side view, as shown in FIGS. An extending front cover plate 52 is provided. The front cover plate 52 is formed in a plate shape, and is fixed to the abdominal surface 41b of the first leveling plate 40 above the front opening 42a by fastening means (not shown) such as bolts, and a fixed portion The front cover main body 52b is connected to the lower part of 52a, is bent with respect to the fixed part 52a, extends downward, and covers the front opening 42a in a front view.

  The front cover main body 52b extends away from the front opening 42a as it extends downward to form a front space F between the front cover main body 52b and the front opening 42a, and the front cover main body. An inflow opening 52c communicating with the front space F is formed between the lower end of 52b and the abdominal surface 42b of the leveling main body lower bottom 42. The front cover main body 52b completely covers the front opening 42a when viewed from the front, and the lower end of the front cover main body 52b extends to a position below the front opening 42a. For this reason, the inflow to the front side opening part 42a of the straw which floated on the rice field Bs of the paddy field B can be prevented.

  A plurality of rakes 55 (see FIG. 2) extending rearward are attached to the back surface of the leveling main body 41 of the first leveling plate 40 with a predetermined interval in the left-right direction.

  Next, the 2nd leveling board 60 is demonstrated. As shown in FIG. 7, the second leveling plate 60 protrudes upward from the leveling main body 61 disposed on the rear side of the first leveling plate 40 and the left and right ends of the leveling main body 61 and extends in the front-rear direction. And a flange portion 62. The front side of the flange portion 62 protrudes toward the first leveling plate 40 side, and the front end portion of the flange portion 62 is rotatably attached to the rear end portion of the leveling side plate portion 43 of the first leveling plate 40. Further, the central portion of the leveling main body 61 in the left-right direction is pivotally supported by a hinge portion 47a (see FIG. 3) of the first leveling plate 40. That is, the second leveling plate 60 is supported by the leveling side plate portion 43 and the hinge portion 47a of the first leveling plate 40 so as to be rotatable in the vertical direction.

  The bottom surface 60a of the second leveling plate 60 extends in the front-rear direction, and the front side of the second leveling plate 60 is bent upward along the front end portion of the leveling main body 61, and further bent forward and extends substantially parallel to the bottom surface 60a. And the guide plate 60b extended diagonally forward is provided in the front side edge part of the bottom face 60a. The guide plate 60b may be configured integrally with the bottom surface 60a or may be provided separately.

  The front end of the guide plate 60b extends with a predetermined gap A with respect to the rear end of the first leveling plate 40. Even when the muddy water from the rear side opening 41d is discharged upward, the guide plate 60b drops the muddy water on the paddy field B between the first leveling plate 40 and the second leveling plate 60. To guide the muddy water movement.

  A plurality of rakes 64 extending rearward are attached to the back surface of the leveling main body 61 of the second leveling plate 60 with a predetermined interval in the left-right direction.

  In addition, the extension leveling board 70 which can expand the width of leveling work is attached to the right-and-left both ends of a 2nd leveling board so that rotation in the up-down direction is possible (refer FIG. 1).

  Next, the operation of the skimming work machine 1 in the case of performing the work of pouring the straw W present on the surface Bs of the paddy field B into the cultivated soil by the skimming work machine 1 of the present invention will be described with reference to FIGS. 1 and 7. To do. First, as shown in FIG. 1, the scraper working machine 1 is connected to the traveling machine body 90, and the input shaft 14 is connected to the PTO shaft of the traveling machine body 90 via a power transmission shaft (not shown). Then, the first leveling plate 40 and the second leveling plate 60 are grounded to the surface Bs of the paddy field B, the traveling machine body 90 is moved forward, and the power from the traveling machine body 90 is transmitted to the working machine body 10 of the working machine 1 instead of the working machine body 1. Then, the scraping rotor 23 (see FIG. 2) is rotated in the down cut direction.

  Then, the cultivated soil cultivated by the alternative claw 25 of the auxiliary scraping rotor 23 (see FIG. 2) is discharged to the first leveling plate 40 side and leveled by the first leveling plate 40 and the second leveling plate 60 during the leveling operation. To be leveled. Of the straw W existing on the surface Bs of the paddy field B, the straw W inside the scraper rotor 23 is trapped in the cultivated soil by the scraper claw 25 of the scraper rotor 23, and the straw W that is going to float is the first. The rake 55 provided on the ground leveling plate 40 is pushed in from above and buried in the cultivated soil.

  Further, the muddy water discharged to the rear side by the claw claw 25 of the claw rotor 23 flows through the muddy water flow path 50 through the inflow opening 52c, the front space F, and the front opening 42a, and is rearward from the rear opening 41d. Discharged to the side. The muddy water discharged from the rear opening 41d is discharged obliquely downward and discharged onto the surface Bs of the paddy field B between the first leveling plate 40 and the second leveling plate 60.

  For this reason, when the straw W squeezed into the paddy field B by the rake 55 of the first ground leveling plate 40 tries to float on the surface Bs of the paddy field B, the straw W that is going to float up has a rear opening 41d. It is pushed into the paddy field B by the muddy water discharged from the water, and is surely driven into the paddy field B by the rake 64 of the second leveling plate 60.

  Therefore, the entire amount of the straw W buried by the scratching claw 25 and the rake 55 can be increased, and as a result, the straw W burying property of the entire paddy field B can be improved. Moreover, since the muddy water staying in front of the first leveling plate 40 is easily removed backward, it is prevented that the straw W or muddy water floating from between the first leveling plate 40 and the side plate portion 31 of the shield cover 30 is pushed out. can do.

  In the above-described embodiment, the case where the two muddy water flow paths 50 that are formed on the left and right sides of the first leveling plate 40 on the left and right sides and extend rearward with respect to the center in the left-right direction is shown. There may be provided three or more muddy water passages extending in the rear direction by forming three or more front openings 42a with a predetermined interval in the left-right direction of the first leveling plate 40.

1 scraper working machine 30 shield cover 40 first leveling plate 42a front side opening 41b abdominal surface 41d rear side opening 42 bottom leveling main body lower side bottom (first leveling plate)
49 Upper leveling body lower side (first leveling board)
49a Rear end 50 Mud flow path 52 Front cover plate (front cover member)
60 Second leveling plate 60a Bottom surface 60b Guide plate (guide member)
90 traveling body B paddy field (field)
Bs surface (surface)
F Front space (space)

Claims (5)

A tilling rotor that is attached to the rear part of the traveling machine body and rotates by power transmitted from the traveling machine body, a shield cover that covers the top of the tilling rotor and extends forward and backward, and a vertical direction on the rear side in the traveling direction of the shield cover A first leveling plate provided so as to be swingable; and a second leveling plate provided so as to be swingable in a vertical direction at a rear end portion of the first leveling plate, and the traveling while the tilling rotor rotates. In the scraping work machine that advances with the forward movement of the aircraft and performs the tilling work of the field,
The first leveling plate includes a front opening that opens to a position above the bottom surface of the second leveling plate, and muddy water that is formed in communication with the front opening and flows from the front opening. A scraper working machine characterized in that a muddy water flow path is provided to flow in front of the main plate. 2. The scraping work machine according to claim 1, wherein the muddy water flow path communicates with a rear side opening provided on the abdominal surface side of the first leveling plate on the rear side of the front side opening. . The scraping work machine according to claim 2, wherein a rear end portion of the rear opening portion faces a surface of a farm field between the first leveling plate and the second leveling plate. In front of the front opening, the front opening is covered in a front view, a space is formed in front of the front opening in a side view, and muddy water passing through the space is guided to the front opening. The front covering member is provided. The scraping work machine according to any one of claims 1 to 3, wherein the front covering member is provided. The second leveling plate is arranged above the surface of the field between the first leveling plate and the second leveling plate and guides muddy water discharged from the rear opening to the surface side of the field. The member according to claim 2 or 3, wherein a member is provided.

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