JP2014083044A - Seedling transplanter - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a seedling transplanter capable of adjusting a ground leveling device to a proper height for a short time period.SOLUTION: A seedling transplanter 1 comprises: a seedling planting portion 40 arranged on the back portion of a running vehicle body 2 for planting a carried seedling in a farm field; a planting depth adjusting device 60 for adjusting the planting depth of the seedling to be planted by the seedling planting portion 40; a land-leveling rotor 70 arranged in the lower portion of the seedling planting portion 40 and acting as a ground leveling device for leveling a farm field surface; an electric motor 91 for adjusting the vertical position of the land-leveling rotor 70 and the vertical position of the seedling planting portion 40; and an association mechanism 90 for adjusting the vertical position of the land-leveling rotor 70 and the vertical position of the seedling planting portion 40 in an interlocked manner when the electric motor 91 is actuated.

Description

  The present invention relates to a seedling transplanter.

  In the seedling transplanter, when planting seedlings, the height is adjusted while adjusting the height of the leveling rotor, which is a leveling device. Some conventional seedling transplanters automatically adjust the height of the leveling rotor. There is something to do. For example, Patent Document 1 is provided with a vertical adjustment mechanism for the leveling rotor, and this vertical adjustment mechanism is operated in accordance with the traveling speed calculated from the number of rotations of the rear wheel rotation sensor of the traveling vehicle body. A riding rice transplanter that moves a leveling rotor to height is disclosed. Patent Document 2 discloses a riding type rice transplanter that can move the leveling rotor up and down in conjunction with the adjustment of the planting depth of the seedling and perform leveling work suitable for the planting depth. Yes.

JP 2011-130736 A JP 2010-252729 A

  However, when the leveling rotor is moved to a height corresponding to the traveling speed as in the riding rice transplanter described in Patent Document 1, the unevenness of the field is not leveled by the leveling rotor, and the planting depth of the seedling is reduced. On the contrary, there is a risk that the ground leveling rotor will strongly contact the field scene and will ruin the field scene, so that the seedlings become shallow and the seedlings are washed away.

  Moreover, when the leveling rotor is moved up and down in conjunction with the adjustment of the seedling planting depth as in the riding type rice transplanter described in Patent Document 2, the leveling rotor determines the seedling planting depth. After that, since it moves up and down according to the planting depth, there is a time difference with respect to the adjustment of the planting depth. For this reason, at the time of planting a seedling, it is conceivable that the planting operation is performed in a state where the height of the leveling rotor is not suitable for the soil quality of the field. In this case as well, the planting depth of the seedling is disturbed because the unevenness of the field is not leveled, or on the contrary, the ground leveling rotor makes strong contact with the field scene and roughens the field scene. There is a risk of being washed away. As described above, it has been very difficult to set the leveling rotor provided as the leveling device to an appropriate height in a short time.

  This invention is made | formed in view of the above, Comprising: It aims at providing the seedling transplanting machine which can adjust a leveling apparatus to suitable height in a short time.

  In order to solve the above-described problems and achieve the object, the seedling transplanting machine according to the present invention is disposed at the rear part of the traveling vehicle body (2), and the seedling planting unit (40) for planting the loaded seedlings in the field. ), A planting depth adjusting device (60) for adjusting the planting depth of the seedling planted by the seedling planting unit (40), and a lower part of the seedling planting unit (40), A leveling device (70) for leveling the farm scene, an adjustment actuator (91) for adjusting the vertical position of the leveling device (70) and the vertical position of the seedling planting part (40), and the adjustment actuator (91) And an interlocking mechanism (90) that adjusts the vertical position of the leveling device (70) and the vertical position of the seedling planting part (40) in operation.

  The invention described in claim 2 is the seedling transplanter according to claim 1, wherein the planting depth adjusting device (60) is disposed at a lower portion of the seedling planting section (40). And a float (61) that rotates up and down when it detects irregularities in contact with the farm scene, and a float support arm (65) that supports the float (61). 70) is connected to a leveling link arm (80) that changes the vertical position, and the interlocking mechanism (90) includes an adjustment gear (92) that rotates by the operation of the adjustment actuator (91), and the adjustment. A first connecting arm (96) connected to the gear (92) and rotating the float support arm (65) in the vertical direction, and connected to the adjusting gear (92) and the leveling link arm (80) Rotate up and down A second connecting arm (97) which is characterized by having a.

  The invention described in claim 3 is the seedling transplanter according to claim 2, wherein the leveling adjustment lever (105) capable of changing the vertical height of the leveling device (70) and the leveling adjustment lever (105 ), And the second connecting arm (97) is configured to be detachably connectable from the adjustment gear (92) at the upper end. The leveling support frame (100) is provided with a switching plate (106), and an upper end portion of the second connecting arm (97) is detachably connectable to the switching plate (106). When the device (70) connects the upper end of the second connecting arm (97) to the switching plate (106), the vertical position can be adjusted by manual operation of the leveling adjustment lever (105). And butterflies.

  According to a fourth aspect of the present invention, there is provided the planting depth adjusting lever (110) capable of operating the float support arm (65) and the planting depth in the seedling transplanting machine according to the second or third aspect. A planting depth potentiometer (111) for detecting the operating angle of the height adjustment lever (110), and a setting member (112) for setting the vertical position of the leveling device (70), the interlocking mechanism (90) Operates the adjusting actuator (91) until the planting depth potentiometer (111) detects an angle corresponding to the operation amount of the setting member (112), thereby moving the vertical position of the leveling device (70). And the vertical position of the seedling planting part (40) is adjusted in conjunction with each other.

  Further, the invention according to claim 5 is the seedling transplanting machine according to any one of claims 2 to 4, wherein the leveling link arm (80) suspends the leveling device to suspend the leveling device (70). An arm (85), and the leveling suspension arm (85) is provided with a climbing detection member (86) for detecting the mud climbing onto the leveling device (70), When the detection value of the climbing detection member (86) is small, the adjustment actuator (91) is actuated in a direction to raise the leveling device (70), and the detection value of the climbing detection member (86) is large. In this case, the adjusting actuator (91) is operated in a direction in which the leveling device (70) is lowered.

  In addition, the invention according to claim 6 is the seedling transplanting machine according to any one of claims 2 to 4, wherein the leveling link arm (80) suspends the leveling device (70). An arm (85), and the leveling suspension arm (85) is provided with a climbing detection member (86) for detecting the mud climbing onto the leveling device (70), When the detection value of the climbing detection member (86) is small, the adjustment actuator (91) is operated in a direction to lower the leveling device (70), and the detection value of the climbing detection member (86) is large. In some cases, the adjusting actuator (91) is operated in a direction to raise the leveling device (70).

  The seedling transplanter according to claim 1 can adjust the working height and the planting depth of the leveling device at the same time by interlocking the leveling device and the seedling planting unit with an interlocking mechanism, and the time required for the adjustment work Can be suppressed. As a result, the leveling device can be adjusted to an appropriate height in a short time, and work efficiency can be improved. In addition, since the working height of the leveling device and the planting depth of the seedling can be linked by an interlocking mechanism, it is possible to prevent unevenness from remaining in the field during seedling planting work, and the leveling device can be Therefore, it is possible to prevent the mud from flowing by rotating the soil and the muddy water flow by rotating the leveling device. As a result, the crop yield can be stabilized.

  In addition to the effect of the invention of claim 1, the seedling transplanting machine according to claim 2 operates the adjusting actuator to rotate the adjusting gear when adjusting the working height of the leveling device and the planting depth of the seedling. Since both can be adjusted at the same time, the time required for the adjustment work can be more reliably reduced. As a result, the leveling device can be more reliably adjusted to an appropriate height in a short time, and work efficiency can be improved. In addition, the interlocking mechanism can simultaneously adjust the working height and planting depth of the leveling device with one adjusting actuator, so that the number of parts can be suppressed and the maintainability can be improved.

  In addition to the effect of the invention of claim 2, the seedling transplanter of claim 3 adjusts the vertical position of the leveling device with the leveling adjustment lever by removing the second connecting arm from the adjustment gear and attaching it to the switching plate side. By adopting such a configuration, it is possible to manually adjust the vertical position. Thereby, even when the adjusting actuator or the like breaks down, the leveling according to the state of the field can be continuously performed. As a result, work efficiency can be improved. On the other hand, in a field where the leveling performance decreases when adjusting using the adjustment actuator, the vertical position of the leveling device can be set manually by removing the second connecting arm from the adjustment gear and attaching it to the switching plate. It is possible to switch off the linkage with the automatic adjustment of. As a result, work efficiency can be improved and planting accuracy of the seedling can be improved.

  In addition to the effect of the invention of claim 2 or 3, the seedling transplanting machine according to claim 4 has a planting depth potentiometer when adjusting the vertical position relative to the leveling device and the planting depth of the seedling. The adjustment actuator is operated until it is detected and the vertical position of the leveling device and the seedling planting depth are determined based on the set amount of the seedling planting depth. This can be prevented. As a result, it is possible to make it difficult for spots to occur in the growth of seedlings, stabilize the growth of seedlings, and improve the quality of crops.

  In addition to the effect of any one of the inventions of claims 2 to 4, the seedling transplanting machine according to claim 5 is provided with a climbing detection member that detects the climbing of mud on the leveling device on the leveling suspension arm. The actuator can change the working height of the leveling device according to the state of the field by operating according to the detection value of the ride-on detection member and changing the vertical position of the leveling device. For this reason, for example, when there is a lot of water in the farm field, the leveling device can be automatically raised to a predetermined height to suppress the occurrence of muddy water flow and prevent the already planted seedling from being washed away. it can. Moreover, when there is little water in the agricultural field, the leveling device can be automatically lowered to a predetermined height, and it is possible to prevent the leveling device from being far from the agricultural scene and becoming unable to level the agricultural field. As a result, appropriate planting can be performed more reliably regardless of the state of the field.

  In the seedling transplanting machine according to claim 6, in addition to the effect of the invention of any one of claims 2 to 4, when the climbing detection member is provided on the leveling suspension arm and the detection value by the climbing detection member is small Because the soil is hard in soil, it is judged that there is little mud riding and the adjustment actuator is operated in the direction to lower the leveling device, and the float is raised. Thereby, the unevenness | corrugation of a field scene can be leveled reliably even when the soil quality of a field is hard, and the planting depth of a seedling can be stabilized. On the other hand, when the detected value by the climbing detection member is large, it is determined that mud climbing is large because the soil soil is soft, the adjustment actuator is actuated in the direction to raise the leveling device, and the float is lowered. Thereby, when the soil quality of a farm field is soft, it can suppress that a leveling device rolls up soil and water and generates a muddy water flow, and can prevent the already planted seedling from being washed away. As a result, appropriate planting can be performed more reliably regardless of the state of the field.

FIG. 1 is a side view of a seedling transplanter according to an embodiment. FIG. 2 is a plan view of the seedling transplanter according to the embodiment. FIG. 3 is an explanatory diagram of the interlocking mechanism shown in FIG. FIG. 4 is a main part rear view of the support structure of the leveling rotor shown in FIG. 3. FIG. 5 is an AA arrow view of FIG. FIG. 6 is an explanatory diagram of a setting dial for setting the vertical position of the leveling rotor. FIG. 7 is a main part configuration diagram of the seedling transplanter shown in FIG. 1. FIG. 8 is an explanatory view showing a state where the leveling rotor shown in FIG. 3 is raised. FIG. 9 is an explanatory view showing a state where the leveling rotor shown in FIG. 3 is lowered. FIG. 10 is a main part schematic diagram showing a modification of the seedling transplanter according to the embodiment. FIG. 11 is a main part schematic diagram showing a modification of the seedling transplanter according to the embodiment. FIG. 12 is a main part schematic diagram showing a modification of the seedling transplanter according to the embodiment.

  Hereinafter, an embodiment of a seedling transplanting machine according to the present invention will be described in detail with reference to the drawings. In addition, this invention is not limited by this embodiment. In addition, constituent elements in the following embodiments include those that can be easily replaced by those skilled in the art or those that are substantially the same.

Embodiment
FIG. 1 is a side view of a seedling transplanter according to an embodiment. FIG. 2 is a plan view of the seedling transplanter according to the embodiment. In the following description, the front / rear / left / right direction reference defines the front / rear, left / right reference with respect to the traveling direction of the vehicle body as viewed from the cockpit. A traveling vehicle body 2 of the seedling transplanter 1 shown in the figure has a pair of left and right front wheels 4 and a pair of left and right rear wheels 5 as well, and is a four-wheel drive vehicle in which each wheel is driven during traveling. In addition, a seedling planting section 40 that can be moved up and down by a seedling planting section lifting mechanism 50 is provided at the rear of the traveling vehicle body 2.

  The traveling vehicle body 2 includes a main frame 7 disposed substantially at the center of the vehicle body, an engine 10 mounted on the main frame 7, and power for transmitting the power of the engine 10 to the drive wheels and the seedling planting unit 40. And a transmission device 15. That is, in this seedling transplanter 1 according to the present embodiment, the power of the engine 10 is used not only to drive the traveling vehicle body 2 forward or backward, but also to drive the seedling planting unit 40, and diesel A heat engine such as an engine or a gasoline engine is used.

  Further, the engine 10 is arranged at a substantially center in the left-right direction of the traveling vehicle body 2 and in a state of protruding upward from a floor step 26 on which an operator puts his / her foot when getting on. Further, the floor step 26 is provided between the front part of the traveling vehicle body 2 and the rear part of the engine 10, and is mounted on the main frame 7, and a part of the floor step 26 becomes a lattice shape. The mud on the shoes can be dropped on the field. A rear step 27 that also serves as a fender for the rear wheel 5 is provided behind the floor step 26. The rear step 27 has an inclined surface that is inclined upward as it goes rearward, and is disposed on each of the left and right sides of the engine 10.

  The engine 10 protrudes upward from the floor step 26 and the rear step 27, and an engine cover 11 that covers the engine 10 is disposed in a portion protruding from these steps. That is, the engine cover 11 covers the engine 10 in a state of protruding upward from the floor step 26 and the rear step 27.

  Further, the traveling vehicle body 2 is provided with a cockpit 28 above the engine cover 11, and a steering unit 30 is disposed in front of the cockpit 28 and at the front center of the traveling vehicle body 2. Yes. The control unit 30 is arranged in a state of protruding upward from the floor surface of the floor step 26 and divides the front side of the floor step 26 into left and right.

  Various operating devices, a fuel tank for engine fuel, and the like are disposed inside the control unit 30, and a front cover 31 that can be opened and closed is provided at the front of the control unit 30. In addition, an operation lever and the like for operating the operation device, instruments, and a handle 32 are disposed on the upper portion of the control unit 30. The handle 32 is provided as a steering member that steers the traveling vehicle body 2 by an operator steering the front wheel 4, and can steer the front wheel 4 via an operation device or the like in the control unit 30. It has become. In addition, as the lever, the operating state of the speed change lever 35 that is a traveling operation member for operating the traveling vehicle body 2 to move forward and backward and the traveling speed, and the seedling planting part 40 are at least raised by the seedling planting part lifting mechanism 50. A planting lifting / lowering lever 36 that is a planting operation member that can be switched by including is disposed. Specifically, the planting elevating lever 36 can switch the operating state of the seedling planting unit 40, and switches between the “up”, “stop”, “down”, and “planting” modes. It can be set.

  In addition, on the portions of the floor step 26 that are positioned on the left and right sides of the control unit 30, a spare seedling table 160 on which supplementary seedlings are placed is disposed. The preliminary seedling stage 160 is rotatably supported by a support shaft (vertical shaft) protruding from the floor surface of the floor step 26, and can be rotated by an operator's hand.

  The power transmission device 15 includes a hydraulic continuously variable transmission 16 as a main transmission, and a belt-type power transmission mechanism 17 that transmits power from the engine 10 to the hydraulic continuously variable transmission 16. Yes. Among these, the hydraulic continuously variable transmission 16 is configured as a hydrostatic continuously variable transmission called HST (Hydro Static Transmission). For this reason, the hydraulic continuously variable transmission 16 generates hydraulic pressure by a hydraulic pump that is driven by power from the engine 10, and converts this hydraulic pressure into mechanical force (rotational force) by a hydraulic motor and outputs it.

  The hydraulic continuously variable transmission 16 is disposed in front of the engine 10 and below the floor surface of the floor step 26. In the seedling transplanter 1 according to the present embodiment, the upper surface of the traveling vehicle body 2 is disposed. As viewed from the front side of the engine 10.

  The belt-type power transmission mechanism 17 includes a pulley attached to the output shaft of the engine 10, a pulley attached to the input shaft of the hydraulic continuously variable transmission 16, a belt wound around both pulleys, A tension pulley for adjusting the tension of the belt. As a result, the belt-type power transmission mechanism 17 can transmit the power generated by the engine 10 to the hydraulic continuously variable transmission 16 via the belt.

  Furthermore, the power transmission device 15 has a transmission case 18 in which the output from the engine 10 is transmitted via the belt-type power transmission mechanism 17 and the hydraulic continuously variable transmission 16. The mission case 18 is attached to the front portion of the main frame 7. The transmission case 18 shifts the output from the engine 10 transmitted via the belt-type power transmission mechanism 17 and the hydraulic continuously variable transmission 16 by the auxiliary transmission in the transmission case 18, and The power can be output separately for the driving power to the rear wheel 5 and the driving power to the seedling planting section 40.

  Among these, a part of the driving power can be transmitted to the front wheel 4 via the left and right front wheel final cases 21, and the rest can be transmitted to the rear wheel 5 via the left and right rear wheel gear cases 22. Yes. The left and right front wheel final cases 21 are disposed on the left and right sides of the mission case 18, respectively. The left and right front wheels 4 are connected to the left and right front wheel final cases 21 via axles. Further, the front wheel final case 21 is driven in accordance with the steering operation of the handle 32 and can steer the front wheel 4. Similarly, the rear wheels 5 are connected to the left and right rear wheel gear cases 22 via axles. On the other hand, the driving power is transmitted to a planting clutch (not shown) provided at the rear part of the traveling vehicle body 2, and is transmitted to the seedling planting unit 40 by a planting transmission shaft (not shown) when the planting clutch is engaged. Is done.

  Further, the seedling planting part lifting mechanism 50 that raises and lowers the seedling planting part 40 provided at the rear part of the traveling vehicle body 2 has a lifting link device 51, and the seedling planting unit 40 uses the lifting link device 51. It is attached to the traveling vehicle body 2 via. The lifting link device 51 includes a parallel link mechanism 52 that connects the rear portion of the traveling vehicle body 2 and the seedling planting portion 40. The parallel link mechanism 52 has an upper link and a lower link, and these links are rotatably connected to a rear-view portal-type link base frame 53 erected at the rear end of the main frame 7. The other end side of each link is rotatably connected to the seedling planting part 40, so that the seedling planting part 40 is connected to the traveling vehicle body 2 so as to be movable up and down.

  The seedling planting part lifting mechanism 50 includes a hydraulic lifting cylinder 54 that expands and contracts by hydraulic pressure, and the seedling planting part 40 can be lifted and lowered by the expansion and contraction operation of the hydraulic lifting cylinder 54. The seedling planting part lifting mechanism 50 can raise the seedling planting part 40 to the non-working position or lower it to the ground work position (ground planting position) by its lifting and lowering operation.

  In addition, the seedling planting unit 40 can plant a range in which a seedling is planted in a plurality of sections or a plurality of rows. In the seedling transplanting machine 1 according to the present embodiment, the seedling is planted in four sections. The seedling planting section 40 is provided. The seedling planting unit 40 includes a planting device 41, a seedling placing unit 45, and a float 61. Among these, the seedling placement part 45 has seedling placement surfaces 46 corresponding to the number of planting strips partitioned in the left-right direction of the traveling vehicle body 2, and a soiled mat-like seedling is placed on each seedling placement surface 46. It is possible to place. Thereby, it is not necessary to return the seedling prepared outside the field to the end of the field (outside the field) every time the seedling placed on the seedling mounting part 45 is planted and can be continuously operated. So work efficiency is improved.

  The planting device 41 is a device for planting the seedling placed on the seedling placement unit 45 in the field. This planting device 41 is arranged for every two strips, and includes two planting claws 42. In addition, the float 61 slides on the farm scene along with the movement of the traveling vehicle body 2 to level the ground, and includes a center float 62 positioned in the center of the seedling planting portion 40 in the lateral direction of the traveling vehicle body 2 and the lateral direction. Side floats 63 located on both sides of the seedling planting part 40 in FIG. The center float 62 and the side float 63 are formed such that the front end portion of the center float 62 is located in front of the front end portion of the side float 63.

  The float 61 constitutes a planting depth adjusting device 60 that adjusts the planting depth of the seedling planted by the seedling planting unit 40. In other words, the float 61 has the planting depth adjusting device 60. doing. The planting depth adjusting device 60 is capable of adjusting the planting depth of the seedling by adjusting the vertical position of the seedling planting unit 40 with respect to the farm field. By adjusting the relative position with the seedling planting unit 40, the vertical position of the seedling planting unit 40 with respect to the field can be adjusted.

  Moreover, the leveling rotor 70 which is a leveling apparatus which performs leveling of the agricultural field is provided in the front side in the position below the seedling planting part 40. The leveling rotor 70 is configured to be rotatable about a rotating shaft extending in the left-right direction of the traveling vehicle body 2 by an output from the engine 10 transmitted through the rear wheel gear case 22.

  Similarly to the float 61, the leveling rotor 70 also has a center rotor 71 located at the center of the seedling planting part 40 in the left-right direction of the traveling vehicle body 2 and side rotors 72 located on both sides of the seedling planting part 40 in the left-right direction. And have. Among these, the center rotor 71 is disposed in front of the center float 62, and the side rotor 72 is disposed in front of the side float 63.

  The center rotor 71 and the side rotor 72 are connected by a power transmission mechanism 75, and the output from the engine 10 is transmitted between the center rotor 71 and the side rotor 72 by the power transmission mechanism 75. Thereby, both the center rotor 71 and the side rotor 72 can be rotated by the output from the engine 10.

  Both the leveling rotor 70 and the float 61 provided as described above can be moved in the vertical direction, and the vertical position can be adjusted in conjunction with the interlocking mechanism 90. That is, the interlocking mechanism 90 can adjust the vertical position of the leveling rotor 70 and the float 61 in conjunction with each other, so that the vertical position of the leveling rotor 70 and the vertical position of the seedling planting unit 40 can be adjusted in conjunction with each other. ing.

  In addition, on both the left and right sides of the seedling planting portion 40, a drawing marker 165 is provided that forms a line that serves as a guide for the planting direction on the next planting line. That is, the drawing marker 165 draws a mark on the field when the seedling transplanter 1 moves forward along the planting direction in the field and moves forward along the planting direction after turning around the field. . The drawing marker 165 is operated by a marker motor 166 (see FIG. 7), and is configured so that the left and right drawing markers 165 can be switched each time the traveling vehicle body 2 turns. The left and right line drawing markers 165 are replaced by the controller 200 (see FIG. 7) to which the marker motor 166 is connected. That is, the controller 200 is also provided as a marker switching device that alternately switches the left and right drawing markers 165 between the activated state and the deactivated state when the traveling vehicle body 2 turns. When the center mascot 168 provided on the front side of the traveling vehicle body 2 is aligned with the line formed by the line drawing marker 165 in the field, the seedling can be planted in accordance with the previous planting work condition. Attachment accuracy is improved.

  In addition, a fertilizer application 150 is mounted behind the cockpit 28 in the traveling vehicle body 2. The fertilizer application device 150 includes a fertilizer tank 151 that stores fertilizer, a fertilizer feeding unit 152 that feeds the fertilizer in the fertilizer tank 151 downward by a fixed amount, and a fertilizer that has been fed to the seedling planting unit 40 side by a fertilizer hose 154. And a blower 153 to be transferred. Further, the fertilizer application device 150 is disposed below the seedling planting unit 40, and is provided on the front side of the fertilizer guide 155, the fertilizer being transferred by the fertilizer hose 154, and is transferred by the fertilizer hose 154. And a grooving device 156 for dropping the fertilizer into a fertilization groove formed near the side of the seedling planting strip.

  FIG. 3 is an explanatory diagram of the interlocking mechanism shown in FIG. The interlocking mechanism 90 that adjusts the vertical position of the leveling rotor 70 and the vertical position of the float 61 includes an electric motor 91 as an adjustment actuator that is a power source when the vertical position is adjusted by moving each of them in the vertical direction. Yes. The electric motor 91 is connected to the controller 200 (see FIG. 7) and can be driven and controlled by the controller 200.

  The interlocking mechanism 90 has an adjustment gear 92 that is rotated by the operation of the electric motor 91, and the adjustment gear 92 is connected to two arms, a first connection arm 96 and a second connection arm 97. ing. Among these, the electric motor 91 and the adjustment gear 92 are positioned on the front side of the seedling placement part 45 of the seedling planting part 40 and are provided on the seedling planting part frame 47 that forms the skeleton of the seedling planting part 40. Is attached.

  The adjustment gear 92 is formed in a shape of a circumferential angle of a part of the disk, that is, a substantially fan shape, and a gear is formed in the outer peripheral portion. The adjustment gear 92 formed in this way is attached to the motor plate 93 so that the rotation shaft is located near the center of the disk and is turnable. It extends in the direction and is attached in such a direction that the gear side is located in front of the rotation shaft. The electric motor 91 is attached to the motor plate 93 in a state where a gear meshing with the adjustment gear 92 is interposed between the output shaft of the electric motor 91 and the adjustment gear 92 so that power can be transmitted to the adjustment gear 92. ing.

  The first connection arm 96 and the second connection arm 97 are both connected to the adjustment gear 92 at their upper ends so as to be rotatable with respect to the adjustment gear 92. The first connecting arm 96 and the second connecting arm 97 are both connected to the adjustment gear 92 with the rotation shaft in a direction parallel to the rotation shaft of the adjustment gear 92, and downward from the adjustment gear 92. It is extended.

  Among these, the 2nd connection arm 97 is connected with the leveling link arm 80 which moves the leveling rotor 70 to an up-down direction at the lower end part. The leveling link arm 80 is connected to the leveling rotor 70 so that the vertical position of the leveling rotor 70 can be changed. The upper leveling link arm 81, the lower leveling link arm 82, And a suspension arm 85.

  The upper leveling link arm 81 and the lower leveling link arm 82 both have rear ends at the seedling planting part frame 47 or a member provided integrally with the seedling planting part frame 47, and the rotation axis is the traveling vehicle body 2. Are connected so as to be rotatable in a direction extending in the left-right direction. That is, the upper leveling link arm 81 and the lower leveling link arm 82 are a seedling planting part frame 47 or a seedling planting part frame 47 from the rotating shaft extending in the left-right direction toward the front of the traveling vehicle body 2. Is provided so as to be rotatable with respect to a member provided integrally therewith.

  The leveling suspension arm 85 has an upper end coupled to the front end of the upper leveling link arm 81 provided in this manner so as to be rotatable about a rotation axis extending in the left-right direction of the traveling vehicle body 2. The upper leveling link arm 81 extends downward from the front end. That is, the leveling suspension arm 85 is pivotally connected to the upper leveling link arm 81 at the upper end.

  A side rotor support member 74 that rotatably supports the side rotor 72 is connected to the lower end side of the leveling suspension arm 85. Further, a front end portion of the lower leveling link arm 82 is connected to the vicinity of the lower end of the leveling suspension arm 85 so as to be rotatable about a rotation axis extending in the left-right direction of the traveling vehicle body 2.

  The lower leveling link arm 82 may be connected to the leveling suspension arm 85 or may be connected to the side rotor support member 74. The front end of the lower leveling link arm 82 is located below the portion to which the upper leveling link arm 81 of the leveling suspension arm 85 is connected and the relative position with respect to the leveling suspension arm 85 does not change. The member to which the parts are connected may be a member other than the leveling suspension arm 85.

  Furthermore, a center rotor support member 73 that supports the center rotor 71 so as to be rotatable at a position in front of the side rotor 72 is connected to the leveling suspension arm 85. The center rotor support member 73 includes a member that rotatably supports the center rotor 71 in a state where the center rotor 71 is disposed in front of the side rotor 72 and a member that is connected to the leveling suspension arm 85. ing.

  The member connected to the leveling suspension arm 85 in the center rotor support member 73 has one end connected to the center rotor 71 side and the other end connected to the upper leveling link arm 81 in the leveling suspension arm 85. And a portion between the lower leveling link arm 82 and a portion to which the lower leveling link arm 82 is connected. Accordingly, the leveling rotor 70 including the center rotor 71 and the side rotor 72 is suspended by the leveling suspension arm 85.

  In addition, the leveling suspension arm 85 is configured so that the front ends of the upper leveling link arm 81 and the lower leveling link arm 82 whose rear ends are rotatably connected to the seedling planting part frame 47 can be rotated. Since they are connected, they rotate in the same direction when they rotate about the rotation axes of the front and rear end portions of the upper leveling link arm 81 and the lower leveling link arm 82.

  For example, when rotating in the upward direction around the rotation axis of the rear end portion of the upper leveling link arm 81, the lower leveling link arm 82 also rotates in the upward direction. Similarly, the rotational directions of the upper leveling link arm 81 and the lower leveling link arm 82 with respect to the leveling suspension arm 85 are the same in both directions. For this reason, when the upper leveling link arm 81 and the lower leveling link arm 82 rotate about the rotation axis at the front and rear ends, the leveling suspension arm 85 does not change its direction greatly. Move in the direction.

  That is, the leveling suspension arm 85 can be moved in the vertical direction by the leveling link arm 80 composed of the upper leveling link arm 81 and the lower leveling link arm 82, that is, the leveling rotor 70 is configured to move the leveling rotor 70. 80 and the leveling suspension arm 85 are suspended so as to be movable in the vertical direction.

  Moreover, the 2nd connection arm 97 by which the lower end part is connected with the leveling link arm 80 is connected with the upper leveling link arm 81 which the leveling link arm 80 has so that a lower end part can rotate. Specifically, the second connection arm 97 is between the end of the upper leveling link arm 81 that is connected to the seedling planting part frame 47 and the end that is connected to the leveling suspension arm 85. In addition, the lower end portion is connected so as to be rotatable in a direction in which the rotation shaft extends in the left-right direction of the traveling vehicle body 2. As a result, the power generated by the electric motor 91 can be transmitted to the leveling link arm 80 via the adjustment gear 92 and the second connection arm 97.

  As described above, the first connection arm 96 is connected to the float support arm 65 that supports the float 61 with respect to the second connection arm 97 connected to the leveling rotor 70 side. The float support arm 65 has a float 61 connected to the rear end side. When the front end side of the float support arm 65 is raised, the float 61 is lowered, and when the front end side of the float support arm 65 is lowered, the float 61 is floated. 61 can be raised. The first connecting arm 96 has a lower end connected to the front end of the float support arm 65 so as to be rotatable about a rotation axis extending in the left-right direction of the traveling vehicle body 2.

  In the interlocking mechanism 90, the first connection arm 96 connected to the float 61 side and the second connection arm 97 connected to the leveling rotor 70 side are connected to one adjustment gear 92 as described above. Therefore, the float 61 and the leveling rotor 70 can be interlocked by operating the electric motor 91 and rotating the adjustment gear 92. That is, the float 61 and the leveling rotor 70 can be interlocked by controlling the electric motor 91 with the controller 200.

  Further, the leveling suspension arm 85 is provided with a climbing detection member 86 (see FIG. 7) that detects the climbing of mud onto the leveling rotor 70. As the climbing detection member 86, for example, a sensor that detects a minute change in mass such as a strain sensor or a weight sensor that can detect a small change in mass is used. That is, the ride-on detection member 86 can detect a change in the mass suspended by the leveling suspension arm 85 based on distortion of the leveling suspension arm 85 or the like. The climbing detection member 86 is connected to the controller 200, and the result detected by the climbing detection member 86 can be transmitted to the controller 200.

  FIG. 4 is a main part rear view of the support structure of the leveling rotor shown in FIG. 3. FIG. 5 is an AA arrow view of FIG. The leveling rotor 70 is supported by the leveling support frame 100 that moves together with the leveling rotor 70 when the leveling rotor 70 moves in the vertical direction. The leveling support frame 100 includes a rotor support frame 102 and a beam member 103. Among these, the rotor support frame 102 is disposed at two locations on both sides in the left-right direction of the traveling vehicle body 2, extends in the vertical direction, and supports the side rotor 72 at the lower end. The beam member 103 extends in the left-right direction of the traveling vehicle body 2 and is disposed between the upper end portions of the rotor support frame 102, and both ends are connected to the upper end portions of the left and right rotor support frames 102.

  The leveling support frame 100 configured as described above is provided with a leveling adjustment lever 105 that can move the leveling support frame 100 in the vertical direction. The leveling adjustment lever 105 can move the beam member 103 in the vertical direction by a manual operation, whereby the vertical position of the leveling support frame 100 can be changed.

  Further, the leveling support frame 100 is provided with a switching plate 106 in the vicinity of the motor plate 93 to which the electric motor 91 and the adjustment gear 92 are attached. The switching plate 106 is attached to the beam member 103 of the leveling support frame 100. The switching plate 106 is configured such that the upper end portion of the second connecting arm 97 is detachable. That is, the upper end of the second connecting arm 97 is detachably attached to the adjustment gear 92, and can be attached to the switching plate 106 when the upper end is removed from the adjustment gear 92. Yes.

  For example, the second connecting arm 97 is rotatably attached to the adjustment gear 92 by a pin, and a member that can be easily attached to and detached from the pin, such as a split pin or a clip, is used to prevent the pin from coming off. It is used. Similar to the attachment to the adjustment gear 92, the second connection arm 97 is attached to the switching plate 106 with a pin, and a split pin, a clip, or the like is used to prevent the pin from coming off. As a result, the second connecting arm 97 can easily attach and detach the upper end to both the adjustment gear 92 and the switching plate 106.

  FIG. 6 is an explanatory diagram of a setting dial for setting the vertical position of the leveling rotor. The vertical position of the leveling rotor 70 can be set by a setting dial 112 which is a setting member for setting the vertical position of the leveling rotor 70. The setting dial 112 is provided in the vicinity of the control unit 30 of the seedling transplanter 1 and can be operated while the operator is sitting on the control seat 28 and performing work.

  The float support arm 65 that supports the float 61 is connected not only to the first connection arm 96 but also to a planting depth adjustment lever 110 that can operate the float support arm 65. In the vicinity of the planting depth adjustment lever 110, a planting depth potentiometer 111 that detects an operation angle of the planting depth adjustment lever 110 is installed.

  The planting depth adjustment lever 110 transmits the power from the electric motor 91 to the float support arm 65 via the adjustment gear 92 and the first connecting arm 96, and the float support arm 65 even when the float support arm 65 moves. The planting depth adjusting lever 110 is also moved in accordance with the movement of. For this reason, the planting depth potentiometer 111 can detect this operation even when the float support arm 65 is operated by operating the electric motor 91.

  When moving the leveling rotor 70 in the vertical direction, by operating the electric motor 91, the power generated by the electric motor 91 is transmitted to the leveling link arm 80, so that the leveling rotor 70 moves in the vertical direction. However, the power generated by the electric motor 91 is also transmitted to the float support arm 65, and the float 61 also moves in the vertical direction.

  Since the planting depth potentiometer 111 can detect the operation of the planting depth adjustment lever 110 in this case, when the leveling rotor 70 is moved in the vertical direction, the leveling set by the setting dial 112 is set. The electric motor 91 is operated until the planting depth potentiometer 111 detects the angle of the planting depth adjustment lever 110 corresponding to the vertical position of the rotor 70.

  Thereby, the position of the leveling rotor 70 in the vertical direction can be set to the position set by the setting dial 112. That is, the interlocking mechanism 90 operates the electric motor 91 until the planting depth potentiometer 111 detects an angle corresponding to the operation amount of the setting dial 112, so that the vertical position of the leveling rotor 70 and the seedling planting unit 40 Adjust the vertical position in conjunction.

  FIG. 7 is a main part configuration diagram of the seedling transplanter shown in FIG. 1. The riding detection member 86, the electric motor 91, the planting depth potentiometer 111, the setting dial 112, and the marker motor 166 are connected to a controller 200 that is an electronic control device that controls each device mounted on the seedling transplanter 1. The controller 200 is used to control the seedling transplanter 1.

  Further, the drawing marker 165 is configured such that a tip portion thereof, that is, a portion grounded to the farm field is rotatable, and a rotation sensor 167 is provided in the rotating portion. The rotation sensor 167 is also connected to the controller 200, and the detection result can be transmitted to the controller 200.

  The seedling transplanter 1 according to the present embodiment is configured as described above, and the operation thereof will be described below. During operation of the seedling transplanter 1, traveling of the traveling vehicle body 2 and planting of seedlings placed on the seedling placement unit 45 are performed by power generated by the engine 10. Among these, the planting operation is such that the seedlings placed on the seedling placement part 45 are gradually brought into the field by rotating the planting claws 42 while the whole planting device 41 rotates in a direction in which the rotation axis is in the horizontal direction. Plant. At the time of planting work, seedlings are planted in a plurality of rows by traveling with the traveling vehicle body 2 in the field while operating the planting device 41 in this way.

  When planting in this way, the seedling planting unit 40 performs planting with the float 61 floating on the field, but the float 61 may change the relative position in the vertical direction with respect to the planting device 41. It is possible. Thereby, the distance of the planting apparatus 41 from a farm scene can be changed, and it is possible to change the planting depth of a seedling. For example, when the float 61 is moved downward, the seedling planting unit 40 performs planting in a state where the float 61 floats on the field, so that the planting device 41 is spaced away from the field. Thereby, the planting depth of a seedling becomes shallow. On the other hand, when the float 61 is moved upward, the planting device 41 approaches the farm field, so that the seedling planting depth becomes deep.

  In addition, the seedling planting unit 40 performs planting while planting a portion where the seedling is planted by the planting device 41 with the leveling rotor 70 disposed in front of the planting device 41 when planting the seedling. As a result, the planting device 41 plants seedlings in the field leveled by the leveling rotor 70. Further, the leveling rotor 70 can also change the relative position in the vertical direction with respect to the planting device 41, similarly to the float 61. Thereby, the leveling rotor 70 changes the relative positional relationship with the field according to the state of the field, such as the amount of water in the field, and performs leveling at an appropriate distance according to the state of the field.

  As described above, the float 61 and the leveling rotor 70 that can change the position in the vertical direction with respect to the planting device 41 can be changed in conjunction by the interlocking mechanism 90. Specifically, by changing the vertical position of the leveling rotor 70, the vertical position is also changed in conjunction with the float 61.

  Specifically, the leveling rotor 70 sets the position in the vertical direction by operating the setting dial 112 provided near the control unit 30 of the seedling transplanter 1. Setting information set by the setting dial 112 is transmitted to the controller 200. The controller 200 operates the electric motor 91 according to the information set with the setting dial 112.

  FIG. 8 is an explanatory view showing a state where the leveling rotor shown in FIG. 3 is raised. For example, when the setting dial 112 is set so as to raise the leveling rotor 70, the controller 200 adjusts the adjustment gear 92 in a direction in which the portion to which the second connecting arm 97 is connected moves upward. The electric motor 91 is operated in the direction in which the adjustment gear 92 rotates about the rotation axis of the gear 92. The adjustment gear 92 is rotated by the power generated by the electric motor 91, and the connection portion with the second connecting arm 97 moves upward. Thereby, the 2nd connection arm 97 moves upwards.

  When the second connection arm 97 moves upward, the upper leveling link arm 81 of the leveling link arm 80 to which the lower end portion of the second connection arm 97 is connected is pulled upward by the second connection arm 97. As a result, the upper leveling link arm 81 is centered on the end connected to the seedling planting part frame 47 in the direction in which the end connected to the leveling suspension arm 85 moves upward. Rotate.

  By this rotation of the upper leveling link arm 81, the leveling suspension arm 85 is pulled upward. Thus, the lower leveling link arm 82 is also centered on the end connected to the seedling planting part frame 47 in the direction in which the end connected to the leveling suspension arm 85 moves upward. Rotate as For this reason, the leveling suspension arm 85 moves upward without the leveling suspension arm 85 itself rotating, and the leveling rotor 70 suspended by the leveling suspension arm 85 moves upward. Thereby, both the center rotor 71 and the side rotor 72 rise.

  Further, in this way, when the adjustment gear 92 is rotated in the direction in which the connection portion between the adjustment gear 92 and the second connection arm 97 moves upward, the connection portion between the adjustment gear 92 and the first connection arm 96 is also provided. The first connecting arm 96 is also moved upward. When the first connecting arm 96 moves upward, the front end side of the float support arm 65 to which the lower end of the first connecting arm 96 is connected is pulled upward by the first connecting arm 96. As a result, the float support arm 65 rotates in the direction in which the float 61 is lowered, and the float 61 moves downward.

  As described above, when the float 61 is lowered by the rotation of the float support arm 65, the planting depth adjustment lever 110 connected to the float support arm 65 is also moved. The amount of movement of the planting depth adjustment lever 110, that is, the operation angle is detected by the planting depth potentiometer 111 and transmitted to the controller 200. The controller 200 compares the value detected by the planting depth potentiometer 111 with the set value of the height of the leveling rotor 70 set by the setting dial 112, and switches the operating state of the electric motor 91.

  For example, when the value detected by the planting depth potentiometer 111 does not reach the value corresponding to the setting value set by the setting dial 112, the controller 200 continues to operate the electric motor 91. As a result, the leveling rotor 70 is raised and the float 61 is kept lowered. When the operation angle of the planting depth adjustment lever 110 changes as the float 61 descends, and the value detected by the planting depth potentiometer 111 reaches a value corresponding to the set value set by the setting dial 112 The controller 200 stops the electric motor 91. As a result, the leveling rotor 70 and the float 61 stop at the height of the set value set by the setting dial 112.

  FIG. 9 is an explanatory view showing a state where the leveling rotor shown in FIG. 3 is lowered. On the contrary, when the setting dial 112 is set so as to lower the leveling rotor 70, the controller 200 moves the portion of the adjustment gear 92 to which the second coupling arm 97 is connected in the downward direction. The electric motor 91 is operated in the direction in which the adjustment gear 92 rotates. Thereby, the 2nd connection arm 97 moves below.

  When the second connection arm 97 moves downward, the upper leveling link arm 81 of the leveling link arm 80 to which the lower end portion of the second connection arm 97 is connected is pushed downward by the second connection arm 97. Thereby, the upper leveling link arm 81 rotates in the direction in which the end on the side connected to the leveling suspension arm 85 moves downward.

  By this rotation of the upper leveling link arm 81, the leveling suspension arm 85 is pushed downward. As a result, the lower leveling link arm 82 is also centered on the end connected to the seedling planting part frame 47 in the direction in which the end connected to the leveling suspension arm 85 moves downward. Rotate as For this reason, the leveling suspension arm 85 moves downward without the leveling suspension arm 85 itself rotating, and the leveling rotor 70 suspended by the leveling suspension arm 85 moves downward. As a result, the center rotor 71 and the side rotor 72 are both lowered.

  Further, when the adjustment gear 92 is rotated in such a direction that the connection portion between the adjustment gear 92 and the second connection arm 97 moves downward, the connection portion between the adjustment gear 92 and the first connection arm 96 is also provided. The first connecting arm 96 is also moved downward. When the first connecting arm 96 moves downward, the front end side of the float support arm 65 to which the lower end of the first connecting arm 96 is connected is pushed downward by the first connecting arm 96. As a result, the float support arm 65 rotates in a direction in which the float 61 is raised.

  Similarly, when the leveling rotor 70 is lowered and the float 61 is raised, the value detected by the planting depth potentiometer 111 and the set value of the height of the leveling rotor 70 set by the setting dial 112 are compared. Then, the operation control of the electric motor 91 is performed. As a result, the leveling rotor 70 and the float 61 are stopped at the height of the set value set by the setting dial 112.

  The leveling rotor 70 and the float 61 that can change the position in the vertical direction as described above change the height according to the state of the field. For example, when the amount of water in the field is large, the setting dial 112 is set so that the height of the leveling rotor 70 is relatively high. Thereby, since the leveling rotor 70 becomes high relative to the seedling planting part 40, it becomes difficult to enter the field, and it becomes possible to level the field without much disturbing the water and mud in the field. . In this case, since the float 61 is lowered, the height of the planting device 41 with respect to the field is relatively high, and planting seedlings at deep water and mud positions in the field can be suppressed.

  On the other hand, when the amount of water in the field is large, the setting dial 112 is set so that the height of the leveling rotor 70 is relatively low. Thereby, since the relative height with respect to the seedling planting part 40 becomes low, it becomes possible for the leveling rotor 70 to appropriately level the field where the amount of water is small and unevenness is likely to occur on the surface. In this case, since the float 61 is raised, the height of the planting device 41 with respect to the field is relatively low, and the seedling can be planted deeply in the field with little surface water and mud.

  In addition, when performing seedling planting work, the controller 200 controls the electric motor 91 according to the detection value of the riding-up detection member 86, and the height of the leveling rotor 70 and the float 61 according to the state of the field. Adjust.

  For example, when the value detected by the ride-on detection member 86 is small, it indicates that there is little muddy ride on the leveling rotor 70. In this case, it is determined that there is little mud in the field and the amount of water in the field is large, and the controller 200 operates the electric motor 91 in the direction in which the leveling rotor 70 is raised. The float 61 descends when the power from the electric motor 91 is transmitted.

  On the contrary, when the detection value by the riding detection member 86 is large, it indicates that there is much mud riding on the leveling rotor 70. In this case, it is determined that there is much mud in the field and the amount of water in the field is small, and the controller 200 operates the electric motor 91 in the direction in which the leveling rotor 70 is lowered. The float 61 is lifted when the power from the electric motor 91 is transmitted.

  As described above, when the electric motor 91 that changes the heights of the leveling rotor 70 and the float 61 breaks down, these heights can be changed manually. Specifically, the upper end portion of the second coupling arm 97 connected to the adjustment gear 92 is removed from the adjustment gear 92 and connected to the switching plate 106 provided on the leveling support frame 100. Thereby, the leveling link arm 80 connected to the leveling rotor 70 is connected to the leveling support frame 100 via the second connection arm 97.

  Since the leveling support frame 100 supports the leveling rotor 70 at the lower end, the leveling support frame 100 is connected to the switching plate 106 by connecting the second connecting arm 97 to the leveling rotor 70, the leveling link arm 80, and the leveling link arm 80. The leveling suspension arm 85 can be supported in a state of being fixed integrally.

  Since the leveling support frame 100 can be moved in the vertical direction by manually operating the leveling adjustment lever 105, the second connecting arm 97 is disconnected from the adjustment gear 92 and connected to the switching plate 106. Thus, the leveling support frame 100 can be manually moved up and down by the leveling adjustment lever 105 regardless of the rotation state of the adjustment gear 92. In this state, the leveling adjustment lever 105 is manually operated to move the leveling support frame 100 in the vertical direction, so that the leveling rotor 70 can be moved together with the leveling support frame 100 to an arbitrary position in the vertical direction.

  Moreover, the height of the float 61 is operated by manually operating the planting depth adjusting lever 110 to manually rotate the float support arm 65 and move the float 61 in the vertical direction. As a result, the float 61 is manually adjusted to an arbitrary height.

  Further, when performing planting work by the seedling transplanter 1 as described above, the controller 200 alternately operates the left and right drawing markers 165, while reversing the working state and the non-working state of the left and right drawing markers 165. Do. Specifically, by operating the marker motor 166 according to the turning state of the traveling vehicle body 2, the drawing marker 165 to be activated is switched among the left and right drawing markers 165 each time the traveling vehicle body 2 is turned. At that time, the controller 200 operates the marker motor 166 while detecting the detection result of the rotation sensor 167 provided in the drawing marker 165, and operates the marker motor 166 while detecting the rotation state of the rotating portion at the tip of the drawing marker 165. Let

  That is, when the rotating part provided at the tip of the drawing marker 165 is grounded, the rotating part rotates as the traveling vehicle body 2 travels. Therefore, when the rotation sensor 167 does not detect the rotation of the rotating part, It can be determined that the rotating part is not grounded. For this reason, the controller 200 operates the marker motor 166 until the drawing marker 165 is grounded until the rotation sensor 167 detects the rotation of the rotating portion of the drawing marker 165. Thereby, even when the planting depth is changed, for example, the drawing marker 165 can be properly grounded.

  The seedling transplanter 1 according to the above embodiment can simultaneously adjust the working height and planting depth of the leveling rotor 70 by interlocking the leveling rotor 70 and the float 61 by the interlocking mechanism 90. That is, the time required for the adjustment work can be reduced by moving the leveling rotor 70 and the float 61 together by the interlocking mechanism 90. As a result, the leveling rotor 70 can be adjusted to an appropriate height in a short time, and work efficiency can be improved.

  Further, since the working height of the leveling rotor 70 and the planting depth of the seedling can be linked by the interlocking mechanism 90, irregularities remain in the field during seedling planting work, and the planting depth of the seedling is too deep or too shallow. Can be prevented. Thereby, the growth of a seedling can be stabilized. Further, the leveling rotor 70 rotates and blows the soil in the farm scene, and the planting depth of the seedling becomes too shallow, or the muddy water flow is generated by the rotation of the leveling rotor 70 and the planted seedling is washed away. Can be prevented. Thereby, it is possible to prevent the absence of a stock. As a result, the crop yield can be stabilized.

  Further, when adjusting the working height of the leveling rotor 70 and the planting depth of the seedling, both can be adjusted simultaneously by operating the electric motor 91 of the interlocking mechanism 90 and rotating the adjustment gear 92. Therefore, the time required for the adjustment work can be reduced more reliably. As a result, the leveling rotor 70 can be more reliably adjusted to an appropriate height in a short time, and work efficiency can be improved.

  Further, since the interlocking mechanism 90 can simultaneously adjust the working height and the planting depth of the leveling rotor 70 with a single electric motor 91, the number of parts can be reduced and a simple configuration can be achieved. As a result, maintainability can be improved.

  Further, by removing the second connecting arm 97 from the adjustment gear 92 and attaching it to the switching plate 106 side, the vertical position of the leveling rotor 70 can be adjusted by the leveling adjustment lever 105, so that the electric motor 91 or the like fails. When you do, you can adjust the vertical position manually. Thereby, even when the electric motor 91 or the like fails, the leveling according to the state of the field can be continuously performed. As a result, the work efficiency can be improved, and the unevenness of the field scene can be leveled to some extent, so that the seedling planting depth can be made less disturbed and the seedling planting accuracy can be improved. .

  On the other hand, in a field where the leveling performance is lowered when the adjustment is performed using the electric motor 91, the second connecting arm 97 is detached from the adjustment gear 92 and attached to the switching plate 106, so that the operator manually operates the leveling rotor 70. It is possible to set the vertical position and to work with the automatic adjustment of the planting depth being cut off. As a result, work efficiency can be improved and planting accuracy of the seedling can be improved.

  Moreover, when adjusting the vertical position with the leveling rotor 70 and the planting depth of the seedling, the electric motor 91 is operated until the planting depth potentiometer 111 detects it, and the set amount of the seedling planting depth is set. Since the vertical position of the leveling rotor 70 and the planting depth of the seedling are determined as a reference, it is possible to prevent the seedling planting depth from being shallow but not varying. As a result, it is possible to make it difficult for spots to occur in the growth of seedlings, stabilize the growth of seedlings, and improve the quality of crops.

  Further, the leveling suspension arm 85 is provided with a climbing detection member 86 for detecting the climbing of the mud onto the leveling rotor 70, and the electric motor 91 is operated according to the detection value of the climbing detection member 86 to be leveled rotor 70. By changing the vertical position, the working height of the leveling rotor 70 can be changed according to the state of the field. For this reason, for example, when there is a lot of water in the field, the leveling rotor 70 can be automatically raised to a predetermined height, so that it is possible to prevent the leveling rotor 70 from entering the water too much and generating a muddy water flow. it can. Thereby, it is possible to prevent the seedling that has already been planted from being washed away, and to prevent the occurrence of a stock loss. Further, when the water in the field is low, the leveling rotor 70 can be automatically lowered to a predetermined height, so that the leveling rotor 70 is too far from the field scene and the unevenness of the field scene cannot be leveled, so that seedlings can be planted. It is possible to prevent the depth from being disturbed. As a result, appropriate planting can be performed more reliably regardless of the state of the field.

[Modification]
The seedling transplanting machine 1 described above raises the leveling rotor 70 when the detection value at the climbing detection member 86 is small, and lowers the leveling rotor 70 when the detection value at the climbing detection member 86 is large. However, the moving direction of the leveling rotor 70 with respect to the magnitude of the detection value of the ride-on detection member 86 may be opposite. That is, the leveling rotor 70 may be lowered when the detection value at the climbing detection member 86 is small, and the leveling rotor 70 may be raised when the detection value at the climbing detection member 86 is large.

  That is, when the detection value of the climbing detection member 86 is small, it is determined that the soil is hard in the field and mud climbing is small, and the controller 200 operates the electric motor 91 in the direction in which the leveling rotor 70 is lowered. The float 61 is lifted when the power from the electric motor 91 is transmitted. On the other hand, when the detected value by the climbing detection member 86 is large, it is determined that mud climbing is large because the soil soil is soft, and the controller 200 operates the electric motor 91 in the direction in which the leveling rotor 70 is lifted. . The float 61 descends when the power from the electric motor 91 is transmitted.

  As described above, when the soil quality of the field is solid, the unevenness of the field scene can be leveled reliably by automatically lowering the leveling rotor 70 to a predetermined height. Thereby, the planting depth of a seedling can be stabilized. Further, when the soil quality of the field is soft, the leveling rotor 70 can be automatically raised to a predetermined height, thereby suppressing the leveling rotor 70 from rolling up soil and water and generating a muddy water flow. As a result, it is possible to prevent the already planted seedlings from being washed away, and to prevent a stock loss. As a result, appropriate planting can be performed more reliably regardless of the state of the field.

  Further, the leveling rotor 70 may be configured to be movable in a direction other than the vertical direction. For example, the leveling rotor 70 may be configured to be movable in the left-right direction of the traveling vehicle body 2. FIG. 10 is a main part schematic diagram showing a modification of the seedling transplanter according to the embodiment. As a configuration for moving the leveling rotor 70 in the left-right direction, for example, the side rotor 72 is configured to be movable in the left-right direction. Specifically, the rotor support frame 122 and the beam member 123 of the leveling support frame 120 are divided, and a connecting member 126 that can move in the extending direction of the beam member 123 with respect to the beam member 123, that is, the left-right direction, is used. The beam member 123 and the rotor support frame 122 are connected.

  For example, the connecting member 126 is connected to the beam member 123 so as to be movable in the left-right direction by making a hole through which the beam member 123 can be passed and passing the beam member 123 through the hole. By attaching the rotor support frame 122 to the connection member 126, the rotor support frame 122 that supports the side rotor 72 at the lower end is connected to the beam member 123 so as to be movable in the left-right direction. The rotor support frame 122 supports the side rotor 72 in a state where relative movement in the left-right direction is not possible.

  A rack gear 130 is attached to the connecting member 126 so that the moving direction is the left-right direction. Further, a distance adjustment motor 135 is disposed in the vicinity of the leveling support frame 120, and a pinion gear of the distance adjustment motor 135 is engaged with the rack gear 130. For this reason, the rack gear 130 can be moved in the left-right direction by the power generated by the interval adjusting motor 135. Thereby, the connecting member 126 can move in the left-right direction, and the rotor support frame 122 attached to the connecting member 126 can also move in the left-right direction together with the side rotor 72.

  In addition, a power transmission mechanism 75 that transmits power between the center rotor 71 and the side rotor 72 includes a shaft 76 that transmits power between the center rotor 71 and the side rotor 72, and each rotor and shaft 76. And a universal joint 77 for transmitting power therebetween. Among these, the shaft 76 is disposed in the left-right direction while facing the front-rear direction because the positions of the center rotor 71 and the side rotor 72 in the front-rear direction of the traveling vehicle body 2 are different. That is, the shaft 76 is formed so as to be inclined with respect to both the front-rear direction and the left-right direction of the traveling vehicle body 2. The universal joint 77 is provided at a connection portion between the center rotor 71 and the shaft 76 and a connection portion between the side rotor 72 and the shaft 76. Thereby, the center rotor 71 and the shaft 76, and the side rotor 72 and the shaft 76 can change relative angles while transmitting power between each other.

  When the leveling rotor 70 configured as described above is operated, the power input unit 128 provided on one side rotor 72 among the side rotors 72 provided on both sides in the left-right direction of the traveling vehicle body 2 is used. The power from the engine 10 is input.

  The power input to the power input unit 128 is used to rotate the side rotor 72 provided with the power input unit 128, and this power is transmitted from the side rotor 72 to the center rotor 71 by the power transmission mechanism 75. It is transmitted from the center rotor 71 to the other side rotor 72. Thereby, each rotor of the center rotor 71 and the side rotor 72 which the leveling rotor 70 has rotates.

  Further, when the side rotor 72 is moved in the left-right direction, the interval adjusting motor 135 is operated. The power generated by the interval adjustment motor 135 is transmitted to the rack gear 130, and the rack gear 130 moves in the left-right direction of the traveling vehicle body 2 by the power transmitted from the interval adjustment motor 135. Accordingly, the connecting member 126 to which the rack gear 130 is attached moves in the left-right direction, and the rotor support frame 102 attached to the connecting member 126 also moves in the left-right direction. When the rotor support frame 102 moves in the left-right direction, the side rotor 72 supported by the rotor support frame 102 in a state in which relative movement in the left-right direction is impossible also moves in the left-right direction together with the rotor support frame 102.

  Thus, when the side rotor 72 moves in the left-right direction, the distance between the side rotor 72 and the center rotor 71 in the left-right direction changes. As a result, the shaft 76 disposed between the side rotor 72 and the center rotor 71 and connected to these rotors by the universal joint 77 changes in relative angle to the side rotor 72 and the center rotor 71. That is, the angle of the shaft 76 relative to the front-rear direction and the left-right direction of the traveling vehicle body 2 changes.

  For example, when the side rotor 72 moves in a direction in which the distance from the center rotor 71 in the left-right direction increases, the shaft 76 has a large inclination angle with respect to the front-rear direction of the traveling vehicle body 2 and a small inclination angle with respect to the left-right direction. The direction changes in the direction. On the other hand, when the side rotor 72 moves in a direction in which the distance from the center rotor 71 in the left-right direction decreases, the shaft 76 has a smaller inclination angle with respect to the front-rear direction of the traveling vehicle body 2 and an inclination angle with respect to the left-right direction. The direction changes in the direction of increasing.

  Since the shaft 76 is connected to the center rotor 71 and the side rotor 72 by the universal joint 77, power can be transmitted between the rotors even when the angle changes as described above. Thereby, the leveling rotor 70 can change the width | variety in the left-right direction according to the state of a farm field, maintaining the state which can transmit motive power between rotors.

  For example, when the seedling transplanter 1 is run while planting seedlings, the water in the farm scene flowing on both sides of the center rotor 71 flows through a portion between the center rotor 71 and the side rotor 72. When the flow is poor, the distance between the center rotor 71 and the side rotor 72 is increased. Thereby, the flow of water is made favorable. On the other hand, when the side rotor 72 is likely to interfere with the adjacent row when planting seedlings, the distance between the center rotor 71 and the side rotor 72 is reduced, and the overall width of the leveling rotor 70 is reduced. As a result, drainage can be improved while preventing interference with adjacent rows.

  Further, since the power transmission mechanism 75 uses the shaft 76 for power transmission between the rotors, a case for covering the entire power transmission mechanism 75, for example, when a chain is used for power transmission, becomes unnecessary. . Thereby, the flow path of the water which flows between the center rotor 71 and the side rotor 72 can be ensured, and drainage can be improved more reliably. In addition, by configuring the power transmission mechanism 75 using the shaft 76 and the universal joint 77, the distance between the center rotor 71 and the side rotor 72 is maintained while maintaining a state in which power can be transmitted between the rotors. The adjusting structure can be easily realized. As a result, an increase in manufacturing cost can be suppressed.

  Moreover, although the seedling transplanting machine 1 mentioned above implement | achieves the interlocking | linkage of the leveling rotor 70 and the float 61 using the interlocking | linkage mechanism 90, you may implement | achieve these interlock | coordination using other than the interlocking mechanism 90. FIG. FIG. 11 is a main part schematic diagram showing a modification of the seedling transplanter according to the embodiment. When interlocking the leveling rotor 70 and the float 61 without using the interlocking mechanism 90, for example, as shown in FIG. 11, the leveling adjustment lever 105 that adjusts the vertical position of the leveling rotor 70, and the vertical movement of the float 61 The planting depth adjusting lever 110 that adjusts the position may be adjacent to each other, and the levers may be connected by the lever connecting member 140.

  The lever connecting member 140 is formed of, for example, a resin material or a rubber material, and is provided so as to be detachable from the leveling adjustment lever 105 and the planting depth adjustment lever 110. The leveling adjusting lever 105 and the planting depth adjusting lever 110 are connected to each other by the lever connecting member 140 by attaching the lever connecting member 140 to each other in a state where both are adjacent to each other.

  In this way, by connecting the leveling adjustment lever 105 and the planting depth adjustment lever 110 by the lever connecting member 140, by operating either lever, both levers will be operated. The leveling height and seedling planting depth can be set to linked heights. Thereby, since the planting depth can be stabilized while leveling the unevenness of the field, the planting accuracy of the seedling can be improved. Further, by connecting the levers, the adjustment work between the leveling height and the seedling planting depth can be performed manually and with a small number of man-hours. Thereby, the time required for work can be shortened, and work efficiency can be improved.

  Furthermore, since the lever connecting member 140 is detachably provided with respect to the leveling adjustment lever 105 and the planting depth adjustment lever 110, the lever connecting member 140 is provided with a lever according to work conditions such as the state of the field and the soil as needed. By removing the connecting member 140, the leveling height and the planting depth of the seedling can be adjusted. Thereby, since the seedling can be planted at an appropriate planting depth in a flattened field scene, the seedling planting accuracy can be improved. As a result, it is possible to achieve both improvement in work efficiency and improvement in seedling planting accuracy.

  In addition, when the ground leveling adjustment lever 105 and the planting depth adjustment lever 110 are connected to each other by the lever connecting member in the state where they are adjacent to each other, the lever connecting member is provided with one lever. May be provided. That is, the lever connecting member is provided on one of the leveling adjustment lever 105 and the planting depth adjusting lever 110, and the lever connecting member is engaged with or separated from the other lever. You may make it switch connection and disconnection of each other. By providing the lever connecting member on one of the levers as described above, the lever connecting member can be easily connected when both levers are connected, and the lever connecting member is lost when both levers are disconnected. Can be prevented.

  Moreover, you may comprise so that the leveling adjustment lever 105 and the planting depth adjustment lever 110 can maintain a connection state. FIG. 12 is a main part schematic diagram showing a modification of the seedling transplanter according to the embodiment. For example, as shown in FIG. 12, the leveling adjustment lever 105 and the planting depth adjustment lever 110 are connected to the planting depth adjustment lever 110 in a state where the leveling adjustment lever 105 cannot be disconnected. The structure which makes the leveling rotor 70 and the float 61 interlock | cooperate can be implement | achieved easily. For this reason, the manufacturing cost when interlocking the leveling rotor 70 and the float 61 can be suppressed.

  Moreover, in the seedling transplanting machine 1 described above, the planting depth potentiometer 111 detects the position of the float 61 in the vertical direction by detecting the operation angle of the planting depth adjustment lever 110. The potentiometer 111 may be provided so as to detect other than the operation angle of the planting depth adjustment lever 110. For example, the planting depth potentiometer 111 may detect the position of the float 61 in the vertical direction by detecting the angle of the float support arm 65.

  That is, when the float 61 moves in the vertical direction, the angle of the float support arm 65 changes. Therefore, by detecting the angle of the float support arm 65, the state of the float 61, that is, the float 61 in the vertical direction is detected. Can be detected. For this reason, the planting depth potentiometer 111 may be provided so as to detect the position of the float 61 by detecting the angle of the float support arm 65. The leveling rotor 70 and the float 61 operate the electric motor 91 while comparing the detection result of the planting depth potentiometer 111 that detects the angle of the float support arm 65 and the setting value set by the setting dial 112 in this way. Even when the state is switched, the height of the set value set by the setting dial 112 can be set.

  In addition, the seedling transplanter 1 may appropriately combine the configurations and controls used in the above-described embodiments and modifications, or may use other than the configurations and controls described above. Regardless of the configuration and control method of the seedling transplanter 1, the leveling rotor 70 can be appropriately adjusted in a short time by including the interlocking mechanism 90 that adjusts the vertical position of the leveling rotor 70 and the vertical position of the float 61. The height can be adjusted and work efficiency can be improved.

DESCRIPTION OF SYMBOLS 1 Seedling transplanter 2 Traveling vehicle body 4 Front wheel 5 Rear wheel 7 Main frame 10 Engine 28 Pilot seat 30 Steering part 32 Handle 35 Shift lever 36 Planting lift lever 40 Seedling planting part 41 Planting device 42 Planting claw 45 Seedling mounting part 47 Seedling planting part frame 50 Seedling planting part lifting mechanism 60 Planting depth adjusting device 61 Float 62 Center float 63 Side float 65 Float support arm 70 Leveling rotor (leveling device)
71 Center rotor 72 Side rotor 75 Power transmission mechanism 80 Leveling link arm 81 Upper leveling link arm 82 Lower leveling link arm 85 Leveling suspension arm 86 Lifting detection member 90 Interlocking mechanism 91 Electric motor (adjustment actuator)
92 Adjustment gear 93 Motor plate 96 1st connection arm 97 2nd connection arm 100,120 Leveling support frame 102,122 Rotor support frame 103,123 Beam member 105 Leveling adjustment lever 106 Switching plate 110 Planting depth adjustment lever 111 Planting Depth potentiometer 112 Setting dial (setting member)
140 Lever connecting member 150 Fertilizer 165 Drawing marker 166 Marker motor 167 Rotation sensor 168 Center mascot 200 Controller

Claims (6)

A seedling planting part that is disposed at the rear of the traveling vehicle body and that plantes the loaded seedlings in the field,
A planting depth adjusting device for adjusting the planting depth of the seedling planted in the seedling planting unit;
A ground leveling device disposed at the bottom of the seedling planting part and leveling the farm scene,
An adjustment actuator for adjusting the vertical position of the leveling device and the vertical position of the seedling planting part;
An interlocking mechanism that adjusts the vertical position of the leveling device and the vertical position of the seedling planting unit in conjunction with the adjustment actuator;
A seedling transplanter characterized by comprising: The planting depth adjusting device is disposed at a lower portion of the seedling planting unit, and floats that rotate up and down when detecting irregularities in contact with the field scene, and a float support that supports the float An arm, and
The leveling device is connected to a leveling link arm that changes the vertical position,
The interlocking mechanism is
An adjustment gear that is rotated by actuation of the adjustment actuator;
A first connecting arm connected to the adjustment gear and rotating the float support arm in a vertical direction;
A second connecting arm connected to the adjustment gear and rotating the leveling link arm in the vertical direction;
The seedling transplanter according to claim 1, comprising: A leveling adjustment lever capable of changing the vertical height of the leveling device;
A leveling support frame that moves up and down by operation of the leveling adjustment lever;
With
The second connecting arm is configured to be detachably connectable with the upper end portion from the adjustment gear.
The leveling support frame is provided with a switching plate, and is configured to be detachably connectable to the switching plate at the upper end of the second connecting arm.
The seedling transplanter according to claim 2, wherein the leveling device can adjust the vertical position by manual operation of the leveling adjustment lever when the upper end portion of the second connection arm is connected to the switching plate. . A planting depth adjustment lever capable of operating the float support arm;
A planting depth potentiometer for detecting an operation angle of the planting depth adjusting lever;
A setting member for setting the vertical position of the leveling device;
With
The interlocking mechanism operates the adjustment actuator until the planting depth potentiometer detects an angle corresponding to the operation amount of the setting member, whereby the vertical position of the leveling device and the vertical position of the seedling planting unit The seedling transplanter according to claim 2 or 3, wherein the seedlings are adjusted in conjunction with each other. The leveling link arm has a leveling suspension arm that suspends the leveling device, and the leveling suspension arm is provided with a climbing detection member that detects the entry of mud onto the leveling device. And
When the detected value of the climbing detection member is small, the adjustment actuator is operated in a direction to raise the leveling device, and when the detected value of the climbing detection member is large, the leveling device is lowered. The seedling transplanter according to any one of claims 2 to 4, wherein an actuator is operated. The leveling link arm has a leveling suspension arm that suspends the leveling device, and the leveling suspension arm is provided with a climbing detection member that detects the entry of mud onto the leveling device. And
When the detection value of the climbing detection member is small, the adjustment actuator is operated in a direction to lower the leveling device, and when the detection value of the climbing detection member is large, the leveling device is lifted. The seedling transplanter according to any one of claims 2 to 4, wherein an actuator is operated.

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