JP2014183781A - Rice transplanter - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a rice transplanter with a float which sufficiently secures a function of the float, and can prevent the generation of a shoot shift of already-planted seedlings.SOLUTION: A rice planter 1 has a float 30 arranged at a planting part 4, the float 30 has a front swelling part 32 swelling in left and right directions and a rear swelling part 31 extending rearward from the rear-side center of the front swelling part 32, the front swelling part 32 of the float 30 is formed wide in width, the rear swelling part 31 of the float 30 is formed narrow in width, protruded parts 33, 33 are formed at left and right sides of bases of the front swelling part 32 and the rear swelling part 31 of the float 30, and furrow making implements 23, 23 can be attached to the protruded parts 33, 33 of the float 30.

Description

  The present invention relates to a rice transplanter provided with a float in a planting part.

  Conventionally, when planting seedlings, planting a float that ensures the leveling performance of the field and guides the water in the field backward so that the water in the field does not affect the already planted seedlings. The rice transplanter provided in the section is known (for example, JP-A-5-95709). As a conventional float, in a plan view, there is a “substantially T-shaped” shape having a front bulge portion bulging left and right and a rear bulge portion extending rearward from the center of the front bulge portion. Yes, the front bulge portion is formed wide and the rear bulge portion is formed narrow, and the flanges are formed on the left and right sides of the front bulge portion.

JP-A-5-95709

  In a rice transplanter equipped with a float having such a buttocks in the planting part, at the time of seedling planting, stagnation may occur due to a rapid change of the float width behind the float buttocks, There is a risk that the streak of the existing seedlings will be inclined to the float side. Then, an object of this invention is to provide the rice transplanter provided with the float which can ensure the function of a float enough and can prevent generation | occurrence | production of the streak of the existing seedling.

  In Claim 1, It is a rice transplanter by which a float is provided in a planting part, Comprising: The said float has the front bulging part which bulges in the left-right direction, and the rear bulging part extended rearward from the rear side center. The front bulge portion of the float is widened, the rear bulge portion of the float is narrowed, and bulge portions are formed on the left and right sides of the base of the rear bulge portion of the float.

  According to a second aspect of the present invention, a groove forming device can be attached to the protruding portion of the float.

  According to a third aspect of the present invention, it is possible to dispose a detection unit of a sensor that detects the surface of the field on the side of the protruding portion of the float.

  In Claim 4, It is a rice transplanter by which a float is provided in a planting part, Comprising: The said float has the front bulge part bulged in the left-right direction, and the rear bulge part extended back from the front bulge part. And the left and right widths of the float are gradually narrowed from the front bulge portion to the rear end of the rear bulge portion.

  According to the present invention, the left-right width of the float gradually or gradually narrows from the front bulge portion to the rear end of the rear bulge portion, so that during the seedling planting operation, stagnation due to a sudden change in the float width The water in the field can be smoothly guided to the rear, and the occurrence of streak where the existing seedlings tilt toward the float side can be prevented. In addition, even when a sensor for detecting the surface position is provided, the influence of the water flow on the detection unit of the sensor can be reduced, and the sensing accuracy can be improved. Therefore, it is possible to configure a rice transplanter capable of more stable seedling planting work, particularly during seedling planting work at high speed.

It is a side view of a rice transplanter. It is a top view of the float provided in the planting part of a rice transplanter. It is a side view of a center float. It is a perspective view of a center float. It is a top view of a center float. It is a top view of a center float and a side float. It is a top view of a center float and a side float. It is a top view of a float.

  As shown in FIG. 1, the rice transplanter 1 includes an engine 2, a power transmission unit 3, a planting unit 4, a lifting unit 5, and a fertilizer application device 20. The planting unit 4 is connected to the airframe via the lifting unit 5 and can be moved up and down by the lifting unit 5. Power from the engine 2 is transmitted to the planting unit 4 via the power transmission unit 3. The rice transplanter 1 plants seedlings in the field by the planting unit 4 while traveling by driving the engine 2.

  The driving force from the engine 2 is transmitted to the PTO shaft 7 through the transmission 6 in the power transmission unit 3. The PTO shaft 7 is provided to protrude rearward from the transmission 6. Power is transmitted from the PTO shaft 7 to the planting transmission case 8 through the universal joint, and the planting unit 4 is driven. A drive shaft 9 is provided rearward from the transmission 6, and a driving force is transmitted from the drive shaft 9 to the rear axle case 10.

  The planting unit 4 includes a planting arm 11, a planting claw 12, a seedling stage 13, and floats 30 and 40. The planting claw 12 is attached to the planting arm 11. The planting arm 11 is rotated by the power transmitted from the planting transmission case 8. A seedling is supplied to the planting claw 12 from a seedling stage 13. With the rotational movement of the planting arm 11, the planting claws 12 are inserted into the field and seedlings are planted so as to have a predetermined planting depth. In this embodiment, a rotary planting claw is employed, but a crank type may be used.

  The fertilizer application device 20 is attached to a fertilizer tank 21, a feeding mechanism 22 that feeds the fertilizer in the fertilizer tank 21 by a predetermined amount, and floats 30 and 40, respectively, and forms a groove for supplying fertilizer to the rice field. And a supply hose 25 connected to the auxiliary groove forming plate 24 on the rear surface of the feeding mechanism 22 and the groove generator 23. The fertilizer in the fertilizer tank 21 is transferred toward the grooving device 23 through the supply hose 25, and is discharged into the groove formed on the rice field by the grooving device 23.

  As shown in FIGS. 2 and 3, the planting unit 4 includes a plurality of floats (in the present embodiment, a central center float 30 and left and right side floats 40 and 40) arranged in the left-right direction. A planting case 15b is connected to the planting frame 15a constituting the planting unit 4, and floats 30 and 40 are connected to the planting case 15b via a link mechanism 15c. The center float 30 disposed in the center is used as a float detection body for detecting a surface. Specifically, the planting part height (distance between the field and the planting part 4) is determined from the angle of the center float 30 corresponding to the unevenness of the rice field.

  As shown in FIGS. 4 and 5, the center float 30 is formed in a “substantially T-shaped” shape in a plan view, and includes a front bulge portion 32 that bulges in the left-right direction and a rear central portion. And a rear bulge portion 31 extending rearward. The left and right width (L1) of the front bulge portion 32 is formed wider than the left and right width (L3) of the rear bulge portion 31. Left and right flanges 32a and 32a are formed by projecting the front bulge part 32 of the center float 30 in the left-right direction, and the rear bulge part in the front bulge part 32 (left and right collar parts 32a and 32a). Protruding portions 33 and 33 projecting in the horizontal direction are formed at the left and right corners on the left and right sides of the base portion 31 (the connected and connected portions).

  The left-right width (L2) of the left and right protruding portions 33, 33 of the center float 30 is narrower than the left-right width (L1) of the front bulge portion 32, and is smaller than the left-right width (L3) of the rear bulge portion 31. Widely set (L1> L2> L3). That is, the center float 30 has left and right protruding portions 33 and 33, so that the left and right widths (L1, L2, and L3) are gradually reduced from the front bulging portion 32 to the rear end of the rear bulging portion 31. It is formed in a stepped shape.

  As shown in FIGS. 2 and 5, seedlings are planted by the planting unit 4 on the side (left and right) of the rear bulge unit 31 behind the ridges 32 a and 32 a of the center float 30. Positions P and P exist, respectively. The seedling planting positions P and P are present behind the left and right protruding portions 33 and 33, respectively. The center float 30 is provided with protruding portions 33 and 33 at the left and right positions so that the center float 30 does not suddenly narrow (relieve) at the rear portions of the left and right flange portions 32a and 32a. As shown by the two-dot chain line in FIG. 5, the “oval shape” can be smoothly guided backward by guiding the water in the field in a streamline manner in the seedling planting operation. It is close to the shape.

  As described above, by providing the left and right projecting portions 33 and 33 on the center float 30, it is possible to alleviate the center float 30 from becoming abruptly narrow behind the left and right flange portions 32a and 32a. Thereby, it is possible to prevent the occurrence of stagnation behind the left and right ridges 32a and 32a of the center float 30, and to prevent the occurrence of streak where the already planted seedlings are inclined toward the center float 30 side. In particular, more stable seedling planting work is possible at the time of seedling planting work at high speed.

  As shown in FIG. 4, the left and right protruding portions 33, 33 of the center float 30 are formed with groover attaching portions 34, 34 to which the groover 23, 23 can be attached, respectively. Groover mounting portion 34 has bolt holes arranged in two rows on the left and right. The groover 23 is fastened to the bolt holes on the left and right outer sides of the groover mounting portion 34 with bolts, nuts and the like via the groover mounting plate 26. Further, a groove forming auxiliary plate 24 is fastened to the back surface of the groove forming device 23 and the back surface of the groove forming mounting plate 26 with bolts, nuts or the like.

  As shown in FIGS. 2 and 6, the side float 40 is formed in a “substantially T-shaped” shape in plan view, and the front bulge portion 42 is wider in the left-right width than the rear bulge portion 41. The rear bulge portion 41 is formed so as to extend rearward from the left and right central portion on the rear side of the front bulge portion 42. The side float 40 has its front bulging portion 42 protruding sideward (left and right) to form left and right flange portions 42a and 42a. Protrusions 43 and 43 projecting in the horizontal direction respectively on the left and right sides (left and right corners) of the base (continuous part) of the rear bulge 41 in the front bulge 42 (left and right flanges 42a and 42a). Is formed.

  As described above, the side float 40 also has the left and right protruding portions 43 and 43 like the center float 30, so that the left and right width gradually increases from the front bulging portion 42 to the rear end of the rear bulging portion 11. It is formed in a stepped shape that becomes narrower. Groover attaching parts 44 and 44 to which the groover 23 and 23 can be attached are also formed on the left and right protruding parts 43 and 43 of the side float 40, respectively.

  The outer shape of the center float 30 and the side float 40 in plan view is such that the water in the field is guided in a streamlined manner during seedling planting so as to smoothly guide it backward without causing stagnation. The float 80 shown in FIG. 8 is formed so that the lateral shape of the float 80 in plan view gradually narrows from the front bulge portion 81 to the rear end of the rear bulge portion 82. Therefore, in the seedling planting operation, the water in the field can be more streamlined toward the seedling planting position P, and the occurrence of streaking of the existing seedlings can be prevented. In addition, it is difficult for muddy water to flow to the adjacent strips where seedlings are already planted, and the influence on the adjacent strips can be reduced. Even if there is a mud pool, it can flow smoothly to the rear of the float. .

  As shown in FIGS. 2 and 3, sensors 50 and 50 are provided immediately before the seedling planting positions P and P, respectively. The sensor 50 is attached to the planting frame 15 a that supports the planting unit 4. The sensor 50 extends from the front toward the rear. The sensor 50 is rotatably supported and hangs down due to gravity, so that the state where the tip is in contact with the field surface is maintained. That is, by measuring the rotation angle of the sensor 50, the positional relationship between the sensor 50 and the field can be detected, and the actual height of the field (the height of the field on which the seedling is planted) can be detected.

  Thus, by detecting the actual height of the field with the sensor 50, the amount of subsidence of the center float 30 (the amount of sinking into the mud field) can be measured. Then, by realizing sensing immediately before planting seedlings with the sensor 50, it is possible to improve the sensing accuracy.

  A plurality of small-diameter rods are extended in parallel at the tip of the sensor 50 as the detection unit 51. Further, the tip of the detection unit 51 is bent upward. That is, by configuring the detection unit 51 to be elongated, the contact area with the farm field and the rice field water is reduced to reduce resistance, and the detection unit 51 is difficult to leave the farm field. As a material constituting the detection unit 51, a material such as a wire having a strength that can hold the shape with respect to a desired length is suitable. The length of the detection part 51 is suitable, for example, such that the sensor 50 is in contact with the agricultural field and extends upward from the surface water.

  As described above, the sensor 50 is provided separately from the center float 30 used for the rice field detection, and the rice field position is detected in the vicinity of the planting position P by the sensor 50. Thereby, the planting part height obtained by the field detection by the center float 30 can be corrected based on the actual height of the field obtained by the field detection by the sensor 50. Therefore, seedlings can be planted with high accuracy according to the field conditions.

  The position just before the seedling planting position P is a farm field after leveling with a float for planting seedlings, and smoothly guides the water in the farm field to the rear without causing stagnation by the float. Yes. Since the agricultural field in such a state is sensed, it is possible to reduce the influence of the uneven shape appearing on the surface of the agricultural field on the sensor 50 and the influence of the muddy water flow generated by the float on the sensor 50. Therefore, planting accuracy at the time of seedling planting work can be ensured.

  As shown in FIG. 2, the detection portions 51 and 51 of the sensors 50 and 50 are provided behind the left and right flange portions 32 a and 32 a of the center float 30 and to the sides of the left and right protruding portions 33 and 33, respectively. By forming the center float 30 in a stepped shape, a space is secured behind the left and right flange portions 32a and 32a and to the sides of the left and right protruding portions 33 and 33, and the sensor 50 is utilized using the space. 50 detectors 51 and 51 are arranged respectively. A seedling planting position P exists behind the detection unit 51 of the sensor 50.

  In this way, the detection units 51 and 51 of the sensors 50 and 50 are respectively arranged behind the left and right collars 32a and 32a, and are located on the inner side of the end of the source of water flow generated by the center float 30 during the planting operation. By arranging the detection unit 51 in the position, it is prevented from being affected by the mud flow. Further, the field is leveled by the center float 30 so that the influence of the foreign matter does not reach the detection unit 51. That is, the front bulge portion 32 of the center float 30 is provided with flanges 32a and 32a that protrude on both sides. A sensor 50 is disposed behind the flanges 32a and 32a. Thereby, the influence of the pulling of the center float 30 which the detection part 51 receives can be suppressed to the minimum.

  As shown in FIG. 2, a leveling device 60 for headland leveling is provided in front of the planting unit 4 and in front of the center center float 30 and the left and right side floats 40 and 40. A part of the power from the drive shaft 9 is branched to the leveling transmission shaft 61 via the rear axle case 10, and is directed from the leveling transmission shaft 61 to both sides via the universal joint 62, the input shaft 63 and the leveling transmission case 64. Then, it is transmitted to the drive shaft 65 extended. A plurality of rotors 66 are fixed to each drive shaft 65, and the rotor 66 is rotated by the rotational drive of the drive shaft 65, thereby leveling the field.

  The leveling device 60 is arranged in such a manner that the center is arranged in front and is inclined from the front to the rear as it goes from the center to both sides. That is, it is provided so that the central portion is positioned in front of other portions. In the plan view, the leveling device 60 is arranged in a square shape. A leveling transmission case 64 is disposed in the center of the leveling device 60, and power is transmitted from the center to both sides.

  As described above, by arranging the leveling device 60 in a square shape, the flow of water generated by the rotor 66 can be directed inward, and the mud flow toward the side of the rice transplanter 1 (adjacent seedlings) Flow out can be suppressed. Thereby, when passing the side of the adjacent seedling which has already been planted, it is possible to suppress the problem of being knocked down by the mud flow.

  In addition, by arranging the leveling device 60 in an inclined shape, it is possible to give an inclination in the traveling direction and the rotation direction of the leveling device 60, and it is possible to suppress the biting of foreign matters into the rotor 66. Furthermore, since the ground leveling is performed in a direction inclined with respect to the traveling direction of the rice transplanter 1 and the leveling work is performed in a state where the adjacent rotors 66 are partially overlapped when viewed from the traveling direction, it is possible to reduce the gap between irregular areas.

  As shown in FIG. 2, the center float 30 is disposed at the center rear of the leveling device 60, and the side floats 40 and 40 are disposed on the left and right sides of the center float 30. By arranging the leveling device 60 in a square shape in plan view, a space can be secured in front of the center float 30.

  Using this space, it is possible to move the center float 30 toward the center of the leveling device 60 and arrange it in front of the side float 40. By arranging the center float 30 forward, the sensing accuracy by the float can be improved. Alternatively, it is possible to extend the center float 30 forward by using a space formed in the left and right center part behind the leveling device 60, and in this case as well, improvement of sensing accuracy by the float is similarly achieved. Can do. In addition, as shown in FIG. 6, the detection part 51 of the sensor 50 which detects a rice field can also be provided in the side float 40 (space 45), respectively.

  Further, as shown in FIG. 7, a protruding portion 73 can be provided also for the float 70 having a “substantially inverted L shape” shape in a plan view. That is, the float 70 has a front bulge portion 72 that bulges in the left-right direction and a rear bulge portion 71 that extends rearward only from one of the left and right sides of the front bulge portion 72. A flange portion 72a that protrudes to the left or right side is formed, and a protruding portion 73 is formed on the inner base portion (corner portion) of the rear bulge portion 71. A groover attaching portion 74 to which the groover 23 can be attached is formed on the protruding portion 73. Moreover, the detection part 51 of the sensor 50 which detects a rice field can also be provided in the space 75 formed in the side of the protruding part 73 behind the said collar part 72a.

  1: rice transplanter, 4: planting part, 23: groover, 30: center float, 31: rear bulge part, 32: front bulge part, 32a: collar part, 33: bulge part, 40: side float , 41: rear bulging part, 42: front bulging part, 42a: collar part, 43: protruding part, 50: sensor, 51: detection part, P: planting position

Claims (4)

  A rice transplanter in which a float is provided in a planting portion, wherein the float has a front bulge portion that bulges in a left-right direction and a rear bulge portion that extends rearward from the rear center, and the front bulge of the float A rice transplanter characterized in that a protruding portion is formed wide, a rear bulging portion of the float is formed narrow, and a protruding portion is formed on the left and right sides of the base of the rear bulging portion of the front bulging portion of the float .   The rice transplanter according to claim 1, wherein a groover can be attached to the protruding portion of the float.   The rice transplanter according to claim 1 or 2, wherein a detection part of a sensor for detecting a rice field can be arranged on a side of the protruding part of the float.   A rice transplanter in which a float is provided in a planting portion, wherein the float has a front bulge portion that bulges in a left-right direction and a rear bulge portion that extends rearward from the front bulge portion, A rice transplanter characterized in that the left and right widths are gradually narrowed from the front bulge to the rear end of the rear bulge.

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