JP7604245B2 - Transplanter soil leveling device - Google Patents

Description

This invention relates to a ground leveling device for a transplanter that mainly clears mud when transplanting rice seedlings in paddy fields.

Conventionally, during transplanting work with a paddy field transplanter, a leveling rotor installed horizontally in front of the planting machine rotates to level the transplant field (field surface), and a drainage outlet is provided at the rear end of the rotor's mud cover as a means to prevent muddy water from being pushed out to the side by the action of the leveling rotor and knocking over or damaging adjacent planted seedlings. This is known from Patent Document 1 and elsewhere.

JP 2007-10493 A (FIG. 3)

The ground leveling device in Patent Document 1 mentioned above has the disadvantage that the mud and muddy water (hereinafter referred to as "muddy water, etc.") that was pushed to the side by the ground leveling rotor is directed between the floats from the drainage outlet at the rear of the mud cover, thereby reducing the amount of water flowing to the side of the rotor and preventing the already planted seedlings from being pushed over or damaged. However, because the muddy water is concentrated and discharged between the rear floats, the ground is not sufficiently leveled by backfilling with mud corresponding to the width and depth of the wheel tracks, and because a large amount of water is concentrated between the rows of seedlings planted behind the floats, the seedlings are unable to maintain their planting position.

The device of the present invention for solving the above problems comprises a transplanter having a planting machine 3 with a float 18a that slides on the wheel tracks D connected to the rear, a soil leveling rotor 5 made of a plurality of rotor members 50 that have a soil leveling body 52 mounted on the outside and rolled over the paddy field surface to level the soil, and a mud guard cover 38 that covers the top and back of the soil leveling rotor 5. The rotor 5 is attached to a rotor shaft 5a of a disk 51. The disk 51 is made of a plurality of rectangular plate members attached to the outer periphery of the disk 51 . The system is characterized in that it is made up of a number of basket-shaped rotor members 50 with leveling bodies 52 arranged in the axial direction, and by inclining the mud scraping surface of the leveling body 52 with respect to the rotor shaft 5a, the leveling body 52 is configured as a mud pushing means that pushes mud and water in front of it toward the wheel tracks D while leveling the rice field surface by the rotation of the rotor, and a drainage section 53 is provided at the rear lower position of the mud guard cover 38 between the wheels 7 and the floats 18a to guide and discharge the mud and water inside the mud guard cover 38 onto the wheel tracks D.

Secondly , in this transplanter, a planting work machine 3 equipped with a float 18a that slides on the wheel tracks D is connected to the rear, and a leveling rotor 5 consisting of a plurality of rotor members 50 that are fitted with a leveling body 52 and level the rice field by rolling it against the rice field surface is supported in the width direction of the machine at the front of the planting work machine 3, and a mud cover 38 is provided to cover the upper and rear surfaces of the leveling rotor 5. In this transplanter, the leveling body 52 is configured as a mud pushing means that pushes mud and water from the front toward the wheel tracks D as the rotor rotates, and a drainage section 53 is provided at the lower rear position of the mud cover 38 between the wheels 7 and the floats 18a to guide and discharge mud and water from within the mud cover 38 onto the wheel tracks D, and the drainage section 53 is a plurality of long holes formed in the mud cover 38 in the vertical direction.

Thirdly , in this transplanter, a planting work machine 3 equipped with a float 18a that slides on the wheel tracks D is connected to the rear, and a ground leveling rotor 5 consisting of a plurality of rotor members 50 that are fitted with a ground leveling body 52 and level the rice field surface by rolling it against the rice field surface is supported in the width direction of the machine at the front of the planting work machine 3, and a mud cover 38 is provided to cover the upper and rear surfaces of the ground leveling rotor 5. In this transplanter, the ground leveling body 52 is configured as a mud pushing means that pushes mud and water from the front toward the wheel tracks D as the rotor rotates, and a drainage section 53 is provided at the lower rear position of the mud cover 38 between the wheels 7 and the floats 18a to guide and discharge mud and water from the mud cover 38 onto the wheel tracks D, and the drainage section 53 is a cutout portion formed by cutting out the lower end of the mud cover 38.

The device of the present invention, configured as described above, improves drainage behind the soil leveling rotor, eliminating inconveniences such as pushing over seedlings already planted to the side, while giving direction to the flow of mud and muddy water, allowing sufficient mud to be backfilled into the wheel tracks and ensuring the leveling of the rice field surface with the float. In addition, the water in the mud guard cover is discharged toward the float at the rear, dispersing the drainage flow to both the left and right of the float, preventing the adverse effects of running water on seedlings already planted to the side and on seedlings being planted at the rear.

In addition, by making the drainage section a long hole in the vertical direction, the flow of water to the rear of the mud cover is softened, preventing the adverse effects of waves and running water on already planted seedlings and on seedlings to be planted. By making the drainage section a notch, drainage to the rear is improved.

FIG. 1 is an overall side view of a transplanter equipped with the device of the present invention. FIG. 2 is an overall front view showing the installation state of the ground leveling rotor. FIG. 4 is an overall rear view showing the installation state of the ground leveling rotor and the mudguard cover. 4 is a partial rear view showing the mounting position of a drainage guide cover provided on the mudguard cover. FIG. FIG. 2 is a plan view of the essential parts showing the positional relationship between the wheels, the ground leveling rotor, the mudguard cover, and the float. FIG. 2 is a partial plan view showing the positional relationship between the wheel tracks and the ground leveling rotor, the mudguard cover, and the float. FIG. 2 is a partial front perspective view of the ground leveling rotor. FIG. 2 is a front view of the left half of the ground leveling rotor. 1A is a side view of the rotor member, FIG. 1B is a front view of the rotor member, and FIG. FIG. 11 is a partial rear view showing another embodiment of the drainage section. A partial plan view showing the positional relationship of the wheels, the ground leveling rotor and the float in another embodiment of the drainage section.

The embodiment of the present invention will be described in detail below. Figs. 1 to 9 show an embodiment of a six-row riding rice transplanter, which is one example of a transplanter, and Fig. 1 is an overall side view of the transplanter. The transplanter is connected to the rear of the running body 1 via a link holder 10 (see Figs. 1 and 2) at the rear end of a lifting link 2 consisting of left and right parallel links, so that the planting work machine 3 can be driven to move up and down. A ground leveling rotor 5 is connected to the front of the planting work machine 3 and rotates in contact with the rice field surface to level out unevenness such as wheel marks.

The traveling machine body 1 has front and rear wheels 6, 7 journalled to the machine frame 4, a bonnet 8 housing an engine at the front end of the machine frame 4, and a driver's seat 9 at the rear. In front of the driver's seat at the rear end of the bonnet 8, there is an operation panel 11 displaying various monitors and a steering wheel 12, steps 13 are formed on the machine frame 4 around the driver's seat 9, and a work equipment operation unit 14 is installed at the rear right side.

The planting work machine 3 has three transmission cases 17 for planting in the front-rear direction, which are arranged side by side in this example, in the left-right direction and each transmission case 17 has a planting transmission mechanism built in a square cylindrical planting frame 16 installed horizontally at the bottom front. Floats 18a, 18b (see Figures 2 and 3) that slide on the paddy field surface are attached to the bottom of each transmission case 17, and the central float 18b constitutes a sensor float for controlling the ground contact height. The rear end of the planting PTO shaft 15 extending from the traveling body 1 is connected to the front end of the transmission cases 17, and the three units are driven for planting simultaneously.

Furthermore, rotary cases 19, which rotate by power transmitted from within the transmission case 17 and serve as the planting section, are rotatably supported on both sides of the rear end of each transmission case 17, and a planting claw 21 is protruding from the tip of each rotary case 19. This rotation is a mechanism that scrapes off the bottom ends of mat seedlings (not shown) placed on a seedling carrier (described below) one row at a time in conjunction with the machine's travel, and plants them on the rice field surface. P in Figure 5 indicates the planting position.

A pair of left and right seedling carrier support stays 22 are erected on both the left and right ends of the planting frame 16, which are bent forward in a U-shape. A seedling carrier 23 is attached to the seedling carrier support stays 22 so that it can slide back and forth between the left and right along the forward tilted position. The seedling carrier 23 is supported and attached by the back surface of the seedling carrier support stays 22 and an L-shaped cross-section seedling receiving part (apron) 24 that is installed horizontally on the transmission case 17.

The planting machine 3 is connected to the link holder 10 (see Figures 2 and 3) that connects the rear ends of each link of the lifting link 2 and to the center of the planting frame 16 so that it can roll around the rolling shaft 26, and the planting operation is input to the planting transmission case 17 by the planting PTO shaft 27 (see Figure 2) that extends from the running body 1 side.

Between the upper ends of the left and right seedling support stays 22, a horizontal rod 28 is installed horizontally to form a gate-shaped frame, and a left-right drive shaft 31 is supported on the back of the lower end between the left and right seedling support stays 22 via a bracket 29 as shown in Figures 7 and 3. Forward-facing suspension arms 32 protrude from both ends of this drive shaft 31, and suspension links 33 are connected downward to the tips of both suspension arms 32, and the rotor shaft 5a of the ground leveling rotor 5 is supported rotatably at the lower end of the suspension link 33 via a bearing portion 34. Below the suspension arm 32, an auxiliary arm 36 is connected in parallel between the suspension link 33 and the seedling support stays 22, and the ground leveling rotor 5 is raised and lowered by this parallel link.

The swinging ends (front ends) of the left and right hanging arms 32 are connected to the crossbar 28 by hanging springs 37 made of coil springs, and the soil leveling rotor 5 is supported by being suspended elastically on the planting frame 16 side, and is a mechanism that allows it to be elastically grounded on the rice field surface. The soil leveling rotor 5 is provided with a mudguard cover 38 that covers the top and back sides of the soil leveling rotor 5, which is formed separately on the left and right together with the soil leveling rotor 5 and is detachably attached to the hanging link 33 via a bracket 39.

A gearbox 41 for transmitting the input power of the rotor PTO shaft 27 is provided at the center (division) of the soil leveling rotor 5 in the left-right direction. The other ends of forward-facing levers 42, 43, each of which has its front end connected to the gearbox 41 and the mudguard cover 38, are connected to the gearbox 41, and the lower end of a suspension spring 44 made of a coil spring for maintaining the rotor in an upward grounded position is connected to the connection fulcrum. The suspension spring 44 urges the rear of the soil leveling rotor 5 and the mudguard cover 38 to rotate in the direction of contact with the ground, providing a mechanism for enhancing the effect of soil leveling the rice field surface and the effect of controlling the flow path of muddy water, etc.

The drive shaft 31 is also supported midway by a bearing 46 attached to the planting frame 16, and a shaft drive 47 is provided near the bearing 46 to bias or rotate the drive shaft 31 so as to swing the lifting arm 31 in the direction of lifting the lifting link 33 and the ground leveling rotor 5.

As shown in Figures 2 to 9 (details in Figure 9), the leveling rotor 5 is fixed to the rotor shaft 5a by inserting and fixing a number of cage-shaped rotor members 50, which are fitted and secured to the rotor shaft 5a, with multiple (six in this example) leveling bodies 52 made of rectangular plate members arranged axially between the protrusions of a pair of left and right chrysanthemum-shaped desks 51.

In the illustrated example, three rotor members 50 are arranged between the left, right and center floats 18a, 18b, and two each at the outer position of the side float 18a. Spaces _S1 , _S2 are provided above each float 18a, 18b to accommodate the bearing portion 34 and gear box 41 described above, and of these, the spaces _S1 on both sides serve to guide muddy water and the like to meet up, as will be described later.

As shown in the figure, each rotor member 50 is attached so that the leveling body 52 is inclined at a predetermined angle with respect to the rotor axis when viewed from the front and inclined forward toward the direction of rotation (angle of attack direction) when viewed from the side, so that muddy water, etc., that surges within the rotor width is guided into the left and _right spaces S1 when the leveling rotor 5 rotates for leveling operation while moving forward (counterclockwise rotation in FIG. 1). In other words, the pair of disks 51 are fixedly arranged with the projections on their peripheral surfaces shifted from each other by a certain angle in the torsional direction.

That is, the inclination angle of the mud scraping surface of the ground leveling body 52 of each rotor member 50 with respect to the rotor axis varies depending on the location in relation to the floats 18a, 18b, as shown in Figures 2, 7 and 8, with the left and right side areas inclined inwardly and upwardly with respect to the axis when viewed from the front, and the areas on both sides of the center float 18b inclined outwardly and upwardly when viewed from the front. In addition to these, it is also possible to form some of the ground leveling bodies 52 in a spiral blade shape or to make the protrusions on the outer periphery of the disk-shaped rotor into an inclined blade shape, thereby forming a mechanism for directing muddy water, etc. into the left and right spaces _S1 .

5 and 6, when the wheels 7 pass over the paddy field, a wheel mark D is formed on the paddy field surface, which consists of a groove _D1 into which the wheels 7 fit and a raised portion _D2 which is pushed up against the side of the wheel when the groove _D1 is formed. When the soil leveling rotor 5 passes over while rotating, the raised portion _D2 is scraped off and scraped toward the center of the groove _D1 (space _S1 ).

Next, we will explain the mud cover 38 which covers the upper surface and the rear side of the ground leveling rotor 5. The mud cover 38 is formed with an angled cross section when viewed from the side, and at the rear position of the space _S1 on the lower end side of the hanging part which covers the rear, there is provided a drainage section 53 consisting of a plurality of vertical long holes which drain the muddy water scraped up by the left and right rotor members 50 so as to escape to the rear side.

Furthermore, a guide cover 54 with a eaves-like shape and a flared cross section that slopes backward when viewed from the rear and covers the drainage section 53 is attached to the rear surface of the hanging part that covers the rear of the mudguard cover 38. This mechanism ensures that the flow of muddy water and other liquids discharged from the drainage section 53 is guided and discharged toward the center of the float 18a without spreading out to the sides or above the drainage section 53.

In Figure 1, 48 is a stand that also serves as a side guard and is supported on the side of the planting machine 3 so that it can rotate up and down. When rotated downward, it serves as a stand that supports the planting machine 3 on the floor, and when rotated sideways, it serves as a guard for the planting machine 3, and when in an upward position, it can be changed to a stored state. 49 is a planting marker that is attached so that it can be folded and removed.

Due to the above mechanism, most of the muddy water etc. scraped up by the soil leveling rotor 5 while the machine is traveling (planting operation) is guided toward the spaces _S1 on both sides (see the arrows in Figure 8) without being pushed to the sides of the soil leveling rotor 5 or splashed upward, and flows into the mud cover 38. The muddy water guided to the spaces _S1 and the muddy water etc. that flowed into the mud cover 38 are discharged from the drainage section 53 toward approximately the center of the rear side float 18a while being rectified along the direction of travel, and are guided and discharged in the direction of the float 18a by the guide cover 54 installed on the rear surface of the cover, without being diffused upward and sideways or turbulent.

As a result, the problem of the seedlings already planted on the right side being damaged or swept away by the muddy water flow is eliminated, and the muddy water flows into the tracks D of the left and right rear wheels 7, and the rice field surface is leveled or leveled by the side floats 18a that slide immediately afterwards, so that planting can be done reliably at each planting position P on both sides behind each float 18a, 18b without being hindered by running water, waves, muddy water, etc.

Figures 10 and 11 show an example in which the drainage section 53 of the mudguard cover 38 is formed as a U-shaped or C-shaped cutout section cut into the lower end of the rear edge of the cover instead of the multiple long holes (slits) described above. This type of cutout increases the amount of muddy water discharged, making it suitable for paddy fields and the like with large amounts of water. Note that the shape and structure other than the drainage section 53 are the same as those of the previously described embodiment, and common reference numerals indicate common parts, etc.

1 Traveling machine body 3 Planting machine 5 Ground leveling rotor 5
6, 7 Wheels 18a, 18b Float 50 Rotor member 53 Drainage section

Claims (3)

In this transplanter, a planting machine (3) equipped with a float (18a) that slides on the wheel tracks (D) is connected to the rear, and a soil leveling rotor (5) consisting of a plurality of rotor members (50) that level the soil by rolling it over the rice field surface with a soil leveling body (52) attached thereto is supported in the width direction of the machine in front of the planting machine (3), and a mud cover (38) is provided to cover the top and back of the soil leveling rotor (5). The soil leveling body (52) consisting of a plurality of rectangular plate members is supported on the outer periphery of a desk (51) on which the rotor (5) is fitted and fixed to the rotor shaft (5a). The ground leveling device for a transplanter is made up of a number of basket-shaped rotor members (50) arranged along the direction of the axis of the rotor (52), and by inclining the mud scraping surface of the ground leveling body (52) relative to the rotor shaft (5a), the ground leveling body (52) is configured as a mud pushing means that pushes mud and water in front of it toward the wheel tracks (D) while leveling the rice field surface by the rotation of the rotor, and a drainage section (53) is provided at the rear lower position of the mud guard cover (38) between the wheels (7) and the floats (18a) to guide and discharge the mud and water inside the mud guard cover (38) onto the wheel tracks (D). A transplanter having a planting machine (3) equipped with a float (18a) that slides on the wheel tracks (D) connected to the rear, a ground leveling rotor (5) consisting of a plurality of rotor members (50) that level the rice field by rolling a ground leveling body (52) over the rice field surface and supported in the width direction of the machine in front of the planting machine (3), and a mud cover (38) that covers the upper and rear surfaces of the ground leveling rotor (5), the ground leveling body (52) is configured as a mud pushing means that pushes mud and water from the front side toward the wheel tracks (D) as the rotor rotates to level the rice field surface, and a drainage section (53) is provided at the rear lower position of the mud cover (38) between the wheels (7) and the floats (18a) to guide and discharge mud and water inside the mud cover (38) onto the wheel tracks (D), and the drainage section (53) is a plurality of vertical long holes formed in the mud cover (38). A transplanter having a planting machine (3) equipped with a float (18a) that slides on the wheel tracks (D) connected to the rear, a ground leveling rotor (5) consisting of a plurality of rotor members (50) that level the rice field by rolling a ground leveling body (52) over the rice field surface and supported in the width direction of the machine in front of the planting machine (3), and a mud cover (38) that covers the upper and rear surfaces of the ground leveling rotor (5), the ground leveling body (52) is configured as a mud pushing means that pushes mud and water from the front toward the wheel tracks (D) as the rotor rotates, while leveling the rice field surface, and a drainage section (53) is provided at the rear lower position of the mud cover (38) between the wheels (7) and the floats (18a) to guide and discharge mud and water inside the mud cover (38) onto the wheel tracks (D), and the drainage section (53) is a notch formed by cutting out the lower end of the mud cover (38).

Images