JP2023003242A - Puddling machine - Google Patents

Abstract

To provide a puddling machine that can flatten the soil with improved accuracy, while properly handling the untilled soil.SOLUTION: A puddling machine 1 is provided with a first work body 11 located in the center and second work body 11L, 11R located on the sides of the first work body 11, which are divided so that their working widths can be changed into a developed state and a storage state. The first work body and the second work bodies 11L, 11R are each provided with a tilling part 3 that rotatably supports a tilling shaft 31 having a tilling blade 32 with a support member 24 and are capable of rotary driving. The support member 24 provided in the second work body 11L, 11R includes a hiller 42 that is disposed behind the tilling part 3 of the second work body 11L, 11R and outside the tilling region in the horizontal direction and includes a hilling face toward the support member side of first work body 11.SELECTED DRAWING: Figure 1

Description

The present invention relates to a puddling machine.

In the puddling work, it is necessary to level the soil while plowing it. As a device for performing such work, a work machine is known which is connected to the rear of a traveling machine body and has left and right work units that can be folded above a central work unit. In such a work machine, when the tilling work area for tilling work is expanded to extend the working width, the soil where the tilling work is not performed at the boundaries between the central working part and the extended working parts on the left and right sides, or Unplowed land, which is soil with insufficient tillage, may occur. For example, Patent Document 1 discloses an invention for treating such residual tillage. According to the present invention, residual tillage treatment is performed by providing residual tillage treatment blades on the inner end side portion of the extension tillage body.

Japanese Unexamined Patent Application Publication No. 2014-200187

However, even if the residual tillage processing blade of Patent Document 1 is used, uncultivated areas still occur, and even if the ground is leveled in the leveling section, there is a problem that satisfactory leveling accuracy cannot be ensured.

This invention
a first working body located in the central portion and a second working body located on the side of the first working body, which are provided separately so that the working width can be changed between the deployed state and the retracted state;
Each of the first working body and the second working body includes a tillage section that rotatably supports a tillage shaft having a tillage claw by a support member and drives the tillage shaft to rotate,
The supporting member provided on the second working body is arranged behind the tilling section of the second working body and outside the tilling area in the left-right direction. a mulching body having a mulching surface facing toward the surface;
A puddling machine characterized by comprising
related to.

This invention further
The earth body has a front edge recessed toward the rear in a concave shape,
The soil gathering surface has a front end projecting from within the rotation area of the tilling section to outside the rotation area on the rear side in a side view;
A puddling machine characterized by comprising
related to.

This invention further
The soil on the tilling section side of the second working body can move to the tilling section side of the first working body in the rotation area of the tilling section in a side view,
A puddling machine characterized by
related to.

This invention further
In the total rotational cross-sectional area, which is the cross-sectional area of the rotational region in a side view, the total open area, which is the area in which the soil can move between the tillage sections of the first working body and the second working body, is , greater than or equal to 40 percent of the total cross-sectional area of rotation;
A puddling machine characterized by
related to.

This invention further
In the total rotational cross-sectional area, which is the cross-sectional area of the rotational region in a side view, the total open area, which is the area in which the soil can move between the tillage sections of the first working body and the second working body, is , being 50 percent of said total cross-sectional area of revolution;
A puddling machine characterized by
related to.

This invention further
In the lower rotating cross-sectional area, which is the cross-sectional area of the lower half of the rotating area, the lower part is the area in which soil can move between the tilling parts of the first working body and the second working body. The open area is 80 percent or more of the lower cross-sectional area of revolution,
A puddling machine characterized by
related to.

This invention further
In the lower rotating cross-sectional area, which is the cross-sectional area of the lower half of the rotating area, the lower part is the area in which soil can move between the tilling parts of the first working body and the second working body. open area is 91 percent relative to said lower cross-sectional area of revolution;
The puddling machine according to claim 3, characterized in that
related to.

According to the above means, the present invention can provide a puddling machine capable of improving the leveling accuracy while appropriately processing residual tillage.

1 is a front view of a puddling machine according to an embodiment of the present invention; FIG. It is the general view seen from the advancing direction front. 1 is a bottom view of a puddling machine according to an embodiment of the present invention; FIG. The entire puddling machine is shown. 1 is a side view of a puddling machine according to an embodiment of the present invention; FIG. It is the figure seen from the advancing direction left side of the puddling work machine. The ground leveling plate is shown during puddling work (upward turning state). 1 is a rear view of a puddling machine according to an embodiment of the present invention; FIG. It is the figure seen from the advancing direction back to the front side. For the sake of explanation, the ground leveling body is omitted from the drawing. FIG. 2 is an enlarged bottom view of the primary part of the puddling machine according to the embodiment of the present invention; The bottom view of the advancing direction left side of a 1st working body is shown. The upper side of the drawing is the front side in the direction of travel, and the left side of the drawing is the right side in the direction of travel. FIG. 1 is an enlarged side view of a principal part of a puddling machine according to an embodiment of the present invention; The figure which cross-sectioned the 2nd working body and looked at the 1st working body side is shown. FIG. 1 is an enlarged side view of a principal part of a puddling machine according to an embodiment of the present invention; It is a figure which shows an open area.

A puddling work machine according to an embodiment of the present invention will be described with reference to the drawings.
1 is a puddling machine.
11 is a first working body (central working body). A first working body (central working body) 11 is positioned at the center of the puddling machine 1 and performs puddling work.
11L is the second working body (extended working body) left. The second working body (extended working body) left 11L is located on the left side of the first working body (central working body) 11 in the traveling direction and is foldably attached to the first working body (central working body) 11 to perform puddling work. do
11R is the second working body (extended working body) right. The second working body (extended working body) right 11R is located on the right side of the first working body (central working body) 11 in the direction of travel, and is foldable with the first working body (central working body) 11 to perform puddling work. do
The second working bodies 11</b>L and 11</b>R are positioned on the sides of the first working body 11 . The second working bodies 11L and 11R are provided separately so that the working width can be changed between the deployed state and the retracted state.

2 is a frame. The frame 2 has a pipe frame 22 . The pipe frame 22 is a frame forming the skeleton of the puddling work machine 1 .
20 is a mounting part. 201 is a top link pin. 202 is a lower link pin. The mounting portion 20 has a top link pin 201 and a lower link pin 202 . The attachment part 20 is attached to the tractor which pulls the puddling work machine 1 by these.

21 is an input case, and 211 is an input shaft. The input shaft 211 is mounted inside the input case 21 and connected to the PTO shaft of the tractor to take out the driving force of the tractor.
212 is the top mast. A top mast 212 is provided on the pipe frame 22 . The top mast 212 has a top link pin 201 at its tip.
213 is a lower plate. Lower plate 213 is attached to pipe frame 22 . A lower link pin 202 is attached to the tip of the lower plate 213 .
23 is a transmission case. The transmission case 23 is provided on the pipe frame 22 and outputs the driving force from the input shaft 211 provided on the input case 21 .

24 is a support member (support frame). The support member 24 is provided at a position symmetrical to the transmission case 23 with respect to the input case 21 , and holds a rotor shaft 31 to be described below below the pipe frame 22 via a holding portion 34 . The transmission case 23 is attached to one of the left and right support members 24 . In the embodiment, it is attached to the support member 24 on the left side in the traveling direction.
25 is a folding fulcrum shaft (fulcrum portion). The folding fulcrum shafts 25 are provided at both ends of the pipe frame 22, and serve as folding rotation fulcrums of the second working body (extending working body) left 11L and the second working body (extending working body) right 11R. One of the folding fulcrum shafts 25 has a fulcrum frame 41L projecting upward from the left cover body 4L provided on the left side 11L of the second working body (extending working body), and the other fulcrum part 25 has a fulcrum frame 41L protruding upward from the right side of the extending working body 11R. A fulcrum frame 41R projecting upward from the provided right cover body 4R is rotatably connected.

3 is a plowing section (crushing section). A plowing section (earth crushing section) 3 is provided below the frame 2 and can be driven to rotate, and crushes a field. A plowing unit (earth crushing unit) 3 is provided in a puddling machine 1 attached to the rear of a traveling machine such as a tractor, and is positioned behind the traveling machine. As the tractor or the like, which is a traveling body, advances, the tillage tines 32 provided in the tilling section (earth crushing section) 3 are rotationally driven to crush the soil.

3L is the left side of the extended crushed earth section. The left extended crushed earth part 3L is rotatably attached to the left extended working body 11L on the left side of the traveling direction of the crushed earth part 3, and can be folded integrally with the left extended working body 11L. 3R is the right of the extended crushing section. The right extended crushed earth part 3R is rotatably attached to the right extended working body 11R on the right side of the traveling direction of the crushed earth part 3, and can be folded integrally with the right extended working body 11R.

31 is a rotor shaft. The rotor shaft 31 is a rotating shaft that spans the lower portions of the case member (transmission case) 23 and the support member (support frame) 24 , and is rotated by the driving force from the case member (transmission case) 23 .
31L is the left side of the extended rotor shaft. The extension-side left rotor shaft 31L is provided on the left side of the rotor shaft 31 in the traveling direction. 31R is the extension side rotor shaft right. The extension-side right rotor shaft 31R is provided on the right side of the rotor shaft 31 in the traveling direction. The left extension rotor shaft 31L and the right extension rotor shaft 31R are rotated by the driving force from the transmission case 23 .

32 is a tillage nail. A plurality of tillage tines 32 are attached around the rotor shaft 31, the left extension rotor shaft 31L, and the right extension rotor shaft 31R. Drive and plow the fields.
The tillage unit 3 rotatably supports a rotor shaft 31, which is a tillage shaft having a tillage claw 32, by a support member 24 and drives the rotor shaft 31 to rotate.

The support member 24 is a member that rotatably supports both end portions of the rotor shaft 31 of the tilling section 3 . As shown in FIG. 3, the lower end of the support member 24 protrudes downward from the puddling machine 1 . Since the support member 24 does not have a tillage function, during tillage work, the cultivator 3 moves forward while burying the lower part of the support member 24 in the soil, thereby forming a groove where the support member 24 passes. to form
In addition, although the tillage tines 32 are arranged close to the left and right sides of the support member 24 in the embodiment, since the tillage tines 32 of the tillage section 3 cannot be substantially arranged, an uncultivated portion is generated. Further, in the embodiment, a case member 23 is provided in the vicinity of the support member 24 to store a transmission chain and the like. Since the case member 23 has a width in the left and right direction, it becomes a factor for widening the groove.

33 is the center side of the dog clutch. The dog clutch central side 33 is provided near the transmission case 23 and the support frame 24 at both ends of the crushed earth section 3 .
33L is the extension side dog clutch left extension side. The extension side dog clutch left extension side 33L is provided on the right side in the traveling direction of the left extension crushed earth section 3L and meshes with the dog clutch center side 33, thereby forming a dog clutch on the left side in the traveling direction.
33R is the extension side dog clutch right extension side. The extension side dog clutch right extension side 33R is provided on the left side of the left extension crushed earth section 3R in the direction of travel, and meshes with the dog clutch center side 33 to constitute a dog clutch on the right side in the direction of travel. The dog clutch turns on and off the rotational drive of the rotor shaft 31, the left rotor shaft 31L on the extension side, and the right rotor shaft 31R on the extension side. In addition, tillage claws 32 are fixed adjacent to the left and right dog clutches, and rotate together with the dog clutches to till around the dog clutches.

34 is a holding part. The holding portion 34 is a bearing portion for the rotor shaft 31 and is provided below the transmission case 23 and the support frame 24 .
34L is a left extension side holding portion. The left extension side holding portion 34L is a bearing portion for the rotor shaft 31L, and is provided in the vicinity of the extension side dog clutch left extension side 33L under the left cover body 4L, which will be described later.
34R is a right extension side holding portion. The right extension side holding portion 34R is a bearing portion for the rotor shaft 31R, and is provided in the vicinity of the extension side dog clutch right extension side 33R under the right cover body 4R described later.
The holding portion 34, the left extension side holding portion 34L, and the right extension side holding portion 34R have bearings and oil seals inside.

4 is a tillage cover (cover body). A tillage cover (cover body) 4 covers the top of the crushed earth section 3 . 4L is the left cover body. 4R is the right cover body. An extension cover 4EL and an extension cover 4EL are provided outside the support member 24 in the width direction in the traveling direction. The extension cover 4EL covers the upper portions of the extension side dog clutch left extension side 33L and the dog clutch center side 33, which are dog clutches on the left side in the traveling direction. The extension cover 4ER covers the upper part of the extension side dog clutch right extension side 33R and the dog clutch center side 33 which are the dog clutches on the right side in the traveling direction. The cover body 4, the left cover body 4L, the right cover body 4R, the extension cover 4EL, and the extension cover 4ER scatter the soil crushed or plowed by the crushed earth part 3, the left crushed earth part extension 3L, and the right crushed earth part 3R. prevent
41L is a left fulcrum frame. The left fulcrum frame 41L is a member protruding upward for rotatably attaching the left second work body (extended work body) 11L of the puddling machine 1 to the fulcrum portion 25, and is integrated with the left cover body 4L. It is an arm that has become
41R is the right fulcrum frame. The second working body (extended working body) right 11R is a member protruding upward for attaching the second working body (extended working body) right 11R of the puddling machine 1 to the fulcrum portion 25 so as to be rotatable. , an arm integrated with the right cover body 4R.

42 is an earth gathering body. The shovel body 42 is positioned behind the crushed earth section 3 and below the cover body 4, and the surface arranged on one side of the rut is positioned rearward toward the support member 24 side with respect to the width of the puddling machine 1, which is the machine body width. tilt to
The mulching body 42 is installed so as to be positioned on the side of the rut formed in the field by the traveling puddling machine 1 . In the embodiment, the shoveling body 42 is positioned below the left cover body 4L, behind the left extension side 33L of the extension side dog clutch, and below the right cover body 4R and on the right extension side 33R of the extension side dog clutch. It is placed in the rear.

As shown in FIGS. 4 and 5, the mulching bodies 42 are attached to the support members 24 provided on the second working bodies 11R and 11L so as to extend behind the tilling section 3 of the second working bodies 11R and 11L and in the left-right direction. Placed outside the tillage area.
The mulching body 42 has a mulching surface 421 facing the support member 24 side of the first working body 11 . As shown in FIG. 6, the earthing body 42 has a front edge 422 that is recessed toward the rear.
As shown in FIGS. 6 and 7, the earth gathering surface 421 has a tip portion 423 that protrudes from within the rotation area R1 of the tilling section 3 to outside the rotation area on the rear side in a side view. The lower end of the tip portion 423 is positioned below the rotor shaft 31 .

The shoring body 42 is a second working body consisting of a first working body (central working body) 11, a second working body (extending working body) left 11L, and a second working body (extending working body) right 11R. It is arranged at the boundary between the two working bodies 11L and 11R. As a result, it is possible to cut down the uncultivated portion that may occur on this boundary with the front edge 422 of the mulching body 42 .

As shown in FIGS. 4 and 5, the front end portion 423 of the shoveling body 42 is bent, and the shoveling surface 421 is oriented slightly upward toward the supporting member 24 side of the first working body (central working body) 11 and slightly upward. forming That is, the earth gathering surface 421 formed on the tip portion 423 is an inclined surface that is inclined upward toward the support member 24 from the front toward the rear in the traveling direction.

The shoveling surface 421 guides the soil cut by the front edge 422 to move along the surface toward the first working body (central working body) 11 side. At this time, the uncultivated soil, which is the soil that moves toward the rear along the soil gathering surface 421, is temporarily lifted. When moving sideways at the same time, the uncultivated soil moves sideways while performing an inversion operation. The moved uncultivated soil moves into the tilled soil tilled by the tilling section 3 of the first working body (central working body) 11 while remaining as a lump of a certain size, so that the lump of soil is buried in the cultivated soil. and does not float upwards. After that, since the ground is leveled by the ground leveling body 5 positioned at the rear, the cultivated soil and the lump of soil are accurately leveled.

A front edge 422 of the mulching body 42 is formed so as to be greatly recessed toward the rear. The plowing sections 3 of the second working bodies 11L and 11R are positioned on the side of the tilling body 42, and the plowed soil plowed by the plowing sections 3 of the second working bodies 11L and 11R passes in front of the front edge 422. made possible. The tillage section 3 of the second working bodies 11L and 11R is plowed by the front end edge 422 of the mulching body 42 in the grooves that can be formed by the passage of the support members 24 of the second working bodies 11L and 11R. The tilled soil can be moved into the grooves along the rotor shaft 31 like the mudflow W1 illustrated in FIG.
In addition, tillage soil is placed at the end of the tilling section 3 of the first working body (central working body) 11 adjacent to the second working bodies 11L and 11R, which can be insufficiently cultivated by being able to pass in front of the front edge 422. can supply. That is, since the tilled soil can be supplied to the first working body (central working body) 11 side from the tilling sections 3 of the second working bodies 11L and 11R, the tilled soil can be leveled in advance. Since the ground is leveled by the leveling body 5 positioned behind the plowing section 3, the ground is leveled with higher accuracy.

As shown in FIGS. 6 and 7, in the rotation region R1 of the tillage unit 3 in a side view, the soil on the tillage unit 3 side of the second working bodies 11L and 11R moves to the mud flow W1 shown in FIG. , the first working body 11 can move toward the tillage section 3 side.

The inside of the rotation region R1 of the tillage unit 3 will be described with reference to FIG. In FIGS. 6 and 7, R is the outer peripheral circle of rotation. The rotation outer circumference circle R is the locus of rotation of the tips of the tillage tines 32 . S1 is the total open area and S2 is the bottom open area. The lower open area S2 is located in the lower half of the total open area S1 with respect to the axis of the rotor shaft 31, which is the rotating shaft.
In the total cross-sectional area of rotation, which is the cross-sectional area of the rotation region R1 in a side view, the total cross-sectional area, which is the area in which the soil can move between the plowing sections 3 of the first working body 11 and the second working bodies 11L and 11R, respectively. The open area S1 is 40% or more of the total cross-sectional area of rotation.
In the lower rotating cross-sectional area, which is the lower half of the rotating region R1 of the tilling unit 3, the soil moves between the tilling units 3 of the first working body 11 and the second working bodies 11L and 11R. The possible area, the lower open area S2, is 80 percent or more with respect to the lower rotational cross-sectional area.

As shown in FIG. 7, depending on the shape of the front edge 422, the cross-sectional area (lower rotational section) of the lower half of the axis of the rotor shaft 31, which is the rotation axis of the tillage section, within the rotation region R1 of the tillage section 3 in side view. area), the area (lower open area) S2 through which soil can pass from the side of the second working bodies 11L and 11R to the first working body (central working body) 11 side is 80% or more (in the embodiment, 91%) is guaranteed. Therefore, the tilled soil plowed by the tilling units 3 of the second working bodies 11L and 11R can smoothly move toward the first working body (central working body) 11 side.

Furthermore, for all the cross-sectional areas (total cross-sectional area of rotation) of the rotation region R1 of the tillage section 3 in side view, there is An area (total open area) S1 through which soil can pass is secured to be 40% or more (50% in the embodiment). That is, the soil can be moved not only on the lower side of the rotary shaft 31 of the tilling section 3 but also on the upper side. Therefore, the tilled soil plowed by the tilling units 3 of the second working bodies 11L and 11R can smoothly move toward the first working body (central working body) 11 side.

5 is a leveling body which is a leveling part. The ground leveling body 5 is attached to the rear part of the cover body 4 at the rear part of the puddling machine 1 in the working direction. The field is leveled as the work progresses.
5L is a left leveling body. The left ground leveling body 5L is attached to the rear portion of the left cover body 4L, and constitutes the left end portion of the ground leveling body 5 in the working direction.
5R is a right leveling body. The right ground leveling body 5R is attached to the rear portion of the right cover body 4R, and constitutes the right end portion of the ground leveling body 5 in the working direction.

A first ground leveling body 51 constitutes the ground leveling body 5 . As shown in FIG. 2 showing a bottom view of the puddling machine 1 according to the embodiment of the present invention and FIG. Level the ground with . A left first ground leveling body 51L is located at the left end of the first ground leveling body 51 in the traveling direction, and a left first ground leveling body 51R is located at the right side in the row direction.
512 is a fulcrum shaft.
52 is a hinge. The hinge 52 connects the first ground leveling body 51, the first left ground leveling body 51L, and the first left ground leveling body 51R of the ground leveling body 5 to the cover body 4, the left cover body 4L, and the right cover body 4R via the fulcrum shaft 512. It is installed as a fulcrum that rotates up and down.
The leveling unit 5 can be turned vertically on a fulcrum shaft 512 that intersects with the direction of travel at the rear of the tilling unit 3 .

A second ground leveling body 56 constitutes the ground leveling body 5 . The second ground leveling body 56 is provided at the rear end of the first ground leveling body 51 attached to the work machine 1, as shown in FIG. Level the ground on the side.
56L is the second ground leveling body left. The second left leveling body 56L levels the ground behind the left cover body 4L located on the left side in the traveling direction.
56R is the second ground leveling body right. The second right leveling body 56R levels the ground behind the right cover body 4R positioned on the right side in the traveling direction.
562 is a rotation fulcrum. The rotation fulcrum 562 is provided at the rear ends of the first ground leveling body 51, the first left ground leveling body 51L, and the first left ground leveling body 51R. 56R is made vertically rotatable with respect to the first ground leveling body 51, the first left ground leveling body 51L and the first left ground leveling body 51R.

71 is a first rake and 72 is a second rake.
The first rake 71 rotates up and down on the front side of the first ground leveling body 51 with a fulcrum shaft 512 as a fulcrum. The second rake 72 is provided behind the first leveling body 51 .

Reference numeral 61 denotes a first rectifying section constituting a rectifying section, which is a leveling plate rectifying section.
As shown in FIG. 5, the first rectifying section 61 is arranged at the end of the leveling section 5 in the width direction with respect to the traveling direction, and has a first surface 611 and a second surface 612 located behind the first surface 611. have.

The rectifying section (ground leveling plate rectifying section) which is the first rectifying section 61 is provided in the first leveling body 51 among the ground leveling bodies 5 composed of the front first leveling body 51 and the rear second leveling body 56 . By the first rectifying section 61, soil movement in the width direction with respect to the traveling direction is completed within the front and rear range with respect to the traveling direction of the first leveling body 51 in side view. Further, by leveling the soil (mud) W1 with the second leveling body 56 positioned behind, leveling accuracy of ground leveling can be improved.

The first rectifying section 61 is arranged behind the support member 24 that supports the tilling section 3 and slightly shifted to the side. Since the support member 24 does not have a tillage function, it advances while being buried in the ground to form a groove that is a trace of passage of the support member 24 . The soil/mud W1 after plowing naturally flows into this groove, but the movement of the soil to the groove can be promoted by the first flow straightening section 61 .
That is, since the first straightening section 61 can forcibly fill the grooves formed by the support members 24 during tillage work, leveling accuracy can be further improved.

A second rectifying section 62 constitutes a rectifying section.
The second straightening section 62 , which is a straightening section, has working surfaces 621 facing the support member 24 at the left and right ends of the tillage cover 4 behind the tillage section 3 .
The working surface 621 of the second rectifying portion 62 is inclined rearward in the width direction in the traveling direction as it approaches the support member 24 .
The second straightening portion 62 has a lower end that is inclined downward toward the support member 24 in the width direction of the traveling direction.

The tillage cover 4 in the embodiment includes a central body cover 4, extension covers 4EL and 4ER located outside of the body cover 4 with the support member 24 sandwiched therebetween, a left cover body 4L, and a right cover body 4R. and The second straightening section 62, which is a straightening section, is provided on the extension covers 4EL and 4ER among the tillage covers.

The tillage cover 4 protects the soil crushed and agitated in the tillage section 3 from scattering around. The soil scattered from the upper surface of the tillage cover 4 to the rear side moves along the inside of the tillage cover 4 toward the rear side, and eventually reaches the second straightening section 62, which is a straightening section.

The second rectifying portion 62 , which is a rectifying portion, has a working surface 621 formed by obliquely bending a portion of the rear side of the tillage cover 4 so as to face the support member 24 . The working surface 621 in the case of the embodiment faces toward the center of the working width of the first working body 11 and forward in the traveling direction.

The bending line of the working surface 621 of the second rectifying portion 62 is inclined from the front to the rear and from the top to the bottom as it approaches the support member 24 from the side of the tillage cover 4 . For this reason, the soil that has moved rearward along the inside of the tillage cover changes its flowing direction depending on the folding line. That is, the soil that has moved rearward within the tillage cover changes its direction of flow toward the support member 24 at the bending line and falls.

The soil that has passed the folding line is further moved toward the support member 24 by the working surface 621 . The soil that has reached the lower end of the support member 24 leaves the tillage cover 4 and the second straightening section 62 as a straightening section and falls to the ground. At this time, since the lower end is inclined downward as it approaches the support member 24 side, the mudflow W1 that has traveled through the cover 4 can bring the soil drop point closer to the support member 24 side. As a result, the tilled soil can be moved to the support member 24 side.

Furthermore, since the working surface 621 is inclined backward as it approaches the support member 24, when soil is scattered and adheres to the working surface 621 directly from the tilling section 3, the moving direction of the scattered soil is directed to the working surface 621. It can be changed to the rear side along. That is, the soil scattered from the tillage section 3 onto the working surface 621 can move along the working surface 621 toward the support member 24 . As a result, the tilled soil can be moved to the support member 24 side.

Although the support member 24 in the embodiment has a structure in which the support member 24 is inserted from both ends of the tillage cover 4 to the inner side in the width direction, it may be provided close to both ends of the tillage cover 4 such as the outside of the tillage cover 4 . By appropriately adjusting the direction of the second straightening section 62 which is the straightening section in this case, the soil can be directed toward the support member 24 .

1. Plowing work machine (running body)
11 First working body 11L Second working body (extended working body) left 11R Second working body (extended working body) right 24 Support member 3 Crushing section 31 Tilling shaft (rotor shaft)
32 Tilling claw 42 Earth gathering body 5 Ground leveling body 61 First straightening section (ground leveling plate straightening section, straightening section)
611 First surface 612 Second surface 613 Front edge 62 Second straightening section (rectifying section)
W1 Soil/mud, soil flow (mud flow)
W2 Flow of contaminants

Claims (7)

a first working body located in the central portion and a second working body located on the side of the first working body, which are provided separately so that the working width can be changed between the deployed state and the retracted state;
Each of the first working body and the second working body includes a tillage section that rotatably supports a tillage shaft having a tillage claw by a support member and drives the tillage shaft to rotate,
The supporting member provided on the second working body is arranged behind the tilling section of the second working body and outside the tilling area in the left-right direction. a mulching body having a mulching surface facing toward the surface;
A puddling machine characterized by comprising: The earth body has a front edge recessed toward the rear in a concave shape,
The soil gathering surface has a front end projecting from within the rotation area of the tilling section to outside the rotation area on the rear side in a side view;
The puddling machine according to claim 1, characterized by comprising: The soil on the tilling section side of the second working body can move to the tilling section side of the first working body in the rotation area of the tilling section in a side view,
The puddling machine according to claim 1 or 2, characterized in that: In the total rotational cross-sectional area, which is the cross-sectional area of the rotational region in a side view, the total open area, which is the area in which the soil can move between the tillage sections of the first working body and the second working body, is , greater than or equal to 40 percent of the total cross-sectional area of rotation;
The puddling machine according to claim 3, characterized in that: In the total rotational cross-sectional area, which is the cross-sectional area of the rotational region in a side view, the total open area, which is the area in which the soil can move between the tillage sections of the first working body and the second working body, is , being 50 percent of said total cross-sectional area of revolution;
The puddling machine according to claim 3, characterized in that: In the lower rotating cross-sectional area, which is the cross-sectional area of the lower half of the rotating area, the lower part is the area in which soil can move between the tilling parts of the first working body and the second working body. The open area is 80 percent or more of the lower cross-sectional area of revolution,
The puddling machine according to claim 3, characterized in that: In the lower rotating cross-sectional area, which is the cross-sectional area of the lower half of the rotating area, the lower part is the area in which soil can move between the tilling parts of the first working body and the second working body. open area is 91 percent relative to said lower cross-sectional area of revolution;
The puddling machine according to claim 3, characterized in that:

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