JP5303307B2 - Transplanter - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a transplanter well balanced in right and left, including an adjustment lever for adjusting planting depth and a varying lever for varying the scraping levels of seedlings from a seedling stand and functioning to making interlock the lift height adjustment of a land leveler for planting depth adjustment. <P>SOLUTION: The transplanter includes: a seedling stand placed in rear of a traveling machine; a planting part placed under the seeding stand and functioning to scrape seedlings and plant them in a farm; a land leveler 6 placed in front of the planting part and functioning to level the land of the farm; a lift-actuating mechanism 33; the adjustment lever 31 for adjusting planting depth; an interlocking mechanism 34 functioning to interlock the lift height adjustment of a land leveler 6 with varying height above the ground; and the varying lever 27 for varying seedling-scraping levels by varying the distance between the seedling stand and the planting part. In this transplanter, at least part of a planting working machine 4 placed behind the traveling machine is composed by the seedling stand and the planting part, on one of the left and light sides of the planting working machine, the lift-actuating mechanism 33 and the interlocking mechanism 34 are placed, while on the other side, the adjustment lever 31 and the varying lever 27 are placed. <P>COPYRIGHT: (C)2010,JPO&amp;INPIT

Description

  The present invention relates to a transplanter including a leveling machine and capable of changing a planting depth.

  A traveling machine body, a seedling stage placed on the rear side of the traveling machine body for placing seedlings, a planting unit disposed below the seedling stage and scraping the seedlings on the seedling stage, and planting them on a farm field; The leveling work machine arranged in front of the planting part to level the field, the lifting operation mechanism for raising and lowering the leveling work machine, and the adjustment for adjusting the planting depth by changing the ground height of the planting part A transplanter comprising a lever and comprising at least a part of a planting work machine disposed behind the traveling machine body by a seedling platform and a planting part is known in the art. There is a problem that the height adjustment of the machine and the planting depth adjustment of the planting work machine need to be performed separately, and the operation becomes complicated.

  In order to improve such a problem and to change the elevation height of the leveling machine when the planting depth is changed, the leveling is changed by changing the height of the planting part with the adjustment lever. 2. Description of the Related Art A transplanter provided with an interlocking mechanism that interlocks the elevation height of a work machine is known (for example, see Patent Document 1).

JP 2006-81522 A

  However, in the transplanter of the above document, a linkage mechanism (device denoted by reference numeral 111 of the same document) and an adjustment lever (device denoted by reference numeral 47 of the same document) are centrally arranged on one of the left and right sides of the planting work machine. (A device such as reference numeral 85 in the same document) is installed in a range from the traveling machine body to the planting work machine, and a problem remains from the viewpoint of maintaining a good left-right balance of the planting work machine and the like.

  Also, usually, the transplanter is often provided with a change lever that changes the scraping amount of the seedling from the seedling platform by the planting unit by changing the distance between the seedling platform and the planting unit, In the transplanter of the above document, if a change lever is provided on the opposite side of the linkage mechanism on the left and right of the planting work machine in consideration of the left / right balance, the change lever and the adjustment lever, which are planting-related operating tools, are separated from each other. There is a problem that the left and right balance is further deteriorated when the change lever is provided on the side of the linkage mechanism on the left and right of the planting work machine in consideration of the operability.

  The present invention provides an adjustment lever for adjusting the planting depth and a change lever for changing the scraping amount of the seedling from the mounting table, and adjusting the elevation height of the leveling machine to adjust the planting depth. An object of the present invention is to provide a transplanter having a good left-right balance.

In order to achieve the above object, the transplanter of the present invention is firstly arranged as a traveling machine body 3, a seedling stage 23 placed behind the traveling machine body 3 to place seedlings, and below the seedling stage 23. Scraping the seedlings on the seedling mount 23 and planting them in the field, a leveling work machine 6 arranged in front of the planting part 24 for leveling the field, and lifting and lowering the leveling work machine 6 The raising / lowering operating mechanism 33, the adjustment lever 31 for adjusting the planting depth by changing the ground height of the planting part 24, and the leveling work machine 6 for changing the ground height of the planting part 24 by the adjustment lever 31 And a change lever 27 that changes the distance between the seedling stage 23 and the planting part 24 to change the scraping amount of the seedling from the seedling stage 23 by the planting part 24. Planted by the seedling stage 23 and the planting part 24 and disposed behind the traveling machine body 3. Constitutes at least part of the work machine 4, on one side of the right and left of the plant with working equipment 4, together with arranging the elevator operating mechanism 33 and the interlocking mechanism 34, disposed an adjusting lever 31 and the change lever 27 on the other side The elevating operation mechanism 33 is provided with an actuator 72 for changing the elevation height of the leveling work machine 6 without changing the planting depth, and the height sensor 82 for detecting the height of the leveling work machine 6 is provided. It is characterized in that the relative height of the leveling work machine 6 with respect to the planting depth can be detected by supporting the posture to be changed in accordance with the change of .

  According to the transplanter of the present invention configured as described above, the lifting operation mechanism and the interlocking mechanism, the adjustment lever and the change lever are distributed and arranged on the left and right of the planting work machine, and the right and left balance is improved. There is. In addition, it is easy to place them close to the center in the left-right direction of the planting work machine, and there is an effect that the left-right balance can be further improved.

  In addition, an actuator that moves the leveling work machine up and down without changing the planting depth is provided in the lifting operation mechanism, and the height sensor that detects the height of the leveling machine is adjusted according to the change in the planting depth. If it is configured to detect the relative height of the leveling work machine relative to the planting depth by supporting it to be changed, even when the height of the leveling work machine is linked to the planting depth, There is an effect that it is possible to easily perform control to change the relative height with respect to the planting depth of the leveling work machine.

It is the whole riding rice transplanter to which the transplanter of the present invention is applied. It is a front view which shows the structure of a planting work machine and a leveling work machine. It is a left front side perspective view which shows the structure of a planting work machine and a leveling work machine. It is a right front side perspective view which shows the structure of a planting work machine and a leveling work machine. It is a rear perspective view showing the structure of planting work machine and ground leveling work machine. It is a left view which shows the structure of a float support mechanism, an adjustment lever, and a linkage mechanism. It is a right view which shows the structure of a float support mechanism, an adjustment lever, and a linkage mechanism. It is a left front side perspective view which shows the structure of a raising / lowering operation mechanism and a linkage mechanism. It is a right front side perspective view which shows the structure of a raising / lowering operation mechanism and a linkage mechanism. It is a back side perspective view showing composition of a raising / lowering operation mechanism and a linkage mechanism. It is a block diagram of the control apparatus mounted in this riding rice transplanter.

Hereinafter, embodiments of the present invention will be described based on illustrated examples.
FIG. 1 is an overall side view of a riding rice transplanter to which a transplanter of the present invention is applied. The riding rice transplanter includes a traveling machine body 3 supported by a pair of left and right front wheels 1, 1 and rear wheels 2, 2, a planting work machine 4 disposed behind the traveling machine body 3, and a planting work machine 4. A horizontal leveling work machine 6 disposed between the rear wheel 2, traveling in the forward direction (traveling direction), and planted by a planting work machine 4 in a farm field leveled by the front leveling work machine 6. Will be planted.

  The traveling machine body 4 includes a control unit 8 on which an operator gets behind a hood 7 that houses an engine (not shown). The control unit 8 is provided with a steering handle 11 and the like in front of a seat 9 on which the operator is seated. It has been.

  The engine power is transmitted to the front and rear wheels 1 and 2 through a transmission (not shown). In addition, the engine power is transmitted to the planting work machine 4 via a planting transmission shaft 12 in the front-rear direction protruding rearward from the transmission, and the rear axle case 14 supporting the drive shaft 13 of the rear wheel 2 is rearward. Engine power is transmitted to the leveling work machine 6 through the extended leveling transmission shaft 16, the universal joint 17, the input shaft 18, and the like.

  The planting work machine 6 is connected to the traveling machine body 3 through a lifting link 19 so as to be lifted and lowered, and is driven up and down by a lifting cylinder 21 that expands and contracts by supplying and discharging pressure oil.

Next, the configuration of the planting work machine 4 and the leveling work machine 6 will be described with reference to FIGS.
2 to 5 are a front view, a left front side perspective view, a right front side perspective view, and a back side perspective view showing configurations of the planting work machine 4 and the leveling work machine 6. FIG. The planting machine 4 is a horizontal column 22 that is a right and left square columnar member and forms a main frame, and is inclined upward from the vicinity of the rear side of the horizontal frame 22 to the front, and seedlings are placed on the back side. A seedling platform 23 to be placed, a planting portion 24 that extends rearward from the side of the horizontal frame 22 to scrape seedlings on the seedling platform 23 and plant it on a farm field; A seedling stage support mechanism 26 that supports the position adjustment, a change lever 27 that performs an operation for changing the vertical position of the seedling stage 23, a front-rear float 28 disposed below the seedling stage 23, and a float 28. A float support mechanism 29 that supports the horizontal frame 22 so that the vertical position can be adjusted, an adjustment lever 31 that adjusts the vertical position of the float 28, and a support mechanism 32 that supports the leveling work machine 6 so that the horizontal frame 22 can be raised and lowered. When An elevating operation mechanism 33 that elevates and lowers the leveling work machine 6 with respect to the horizontal frame 22 (planting unit 24) and a linkage mechanism 34 that links the elevating and lowering of the leveling work machine 6 with the vertical position adjustment of the float 28 are provided. .

  The horizontal frame 22 is supported so as to be able to roll with respect to the traveling machine body 3. Specifically, a vertical support frame 36 that is fixed to the horizontal frame 22 and protrudes upward from a central portion in the horizontal direction of the horizontal frame 22, and a vertical direction that is connected to the traveling machine body 3 by a lift link 19 so as to be movable up and down. The holder frame 37 is pivotally connected to the axis of the rolling shaft 38 via the rolling shaft 38 in the front-rear direction, so that the horizontal frame 22 can be tilted left and right (rollable) to the lifting link 19. It is supported.

  Further, since the support frame 36 is rotated around the axis of the rolling shaft 38 with respect to the holder frame 37 by the driving force of the left / right tilt control motor 39, the right / left relative to the traveling machine body 3 of the planting work machine 4. The inclination angle can be forcibly changed regardless of the inclination of the field. This makes it possible to perform rolling control for holding the planting work machine 4 (the horizontal frame 22) horizontally regardless of the inclination of the field.

  The change lever 27 and the adjustment lever 31 are respectively inserted in the guide body 41 fixedly attached to the upper surface of the horizontal frame 22 and moved back and forth on the left and right sides (left side in the illustrated example) of the planting work machine 4. While being supported so as to be swingable, on the other side of the right and left of the planting work machine 4, the above-described lifting operation mechanism 33 and the linkage mechanism 34 are disposed. That is, the change lever 27 and the adjustment lever 31, the lifting operation mechanism 33, and the linkage mechanism 34 are arranged in a left-right distribution manner with the rolling shaft 38 as a boundary. Incidentally, the structure of the raising / lowering operation mechanism 33 and the linkage mechanism 34 will be described later.

  The guide body 41 has a U-shape in plan view and is extended upward so that the front surface is inclined rearward upward. Two guide holes 41a and 41b are formed on the front face in a state where they are arranged side by side, and one of the two guide holes 41a and 41b (the right guide hole 41b in the illustrated example) is halfway through the change lever 27. The middle portion of the adjustment lever 31 is inserted into the other (left guide hole 41a in the illustrated example), and the change lever 27 and the adjustment lever 31 are guided to swing back and forth. In addition, the guide holes 41a and 41b, the change lever 27, and the adjustment lever 31 are configured so that the change lever 27 and the adjustment lever 31 can be locked at a plurality of positions of the guide holes 41a and 41b.

  In the seedling platform 23, the apron 42 in the left and right direction at the lower end is mechanically coupled to the base end portion of the change lever 27 by the seedling platform support mechanism 26, and when the change lever 27 is swung back and forth, The vertical position relative to the frame 22 is changed. The relative vertical position of the seedling stage 23 with respect to the planting part 24 (distance between the planting part 24 and the seedling stage 23) is changed by changing the relative vertical position of the seedling stage 23 with respect to the horizontal frame 22. The amount of seedling scraping from the seedling mount 23 performed by the planting unit 23 is changed. Incidentally, as described above, since the change lever 27 can be locked at a plurality of positions, the scraping amount of the seedling from the seedling mount 23 can be adjusted in a plurality of stages.

  A plurality of the planting parts 24 are arranged in parallel in the left-right direction, and each planting part 24 includes a cylindrical planter case 43 in the front-rear direction and a planting claw supported on the rear part of the planter case 43. Each planter case 43 is configured such that the front end portion is supported and fixed on the side of the horizontal frame 22, and the power of the planting transmission shaft 12 that is power from the traveling machine body 3 side is transmitted to the rear planting claws. .

  The support mechanism 32 is a support bracket in the front-rear direction that is set and fixed (fixed) in the middle part of each pair of vertical frames 44, 44 in the vertical direction protruding upward from the left and right parts of the horizontal frame 22. 46, an operation shaft 47 that is installed between the left and right support brackets 46 and 46 so as to be rotatable around the axis, and a middle portion of the operation shaft 47 that protrudes upward from a middle portion of the horizontal frame 22. And a support member 48 that is rotatably supported.

  In addition, in the support mechanism 32, a pair of left and right upper links 51 that swing up and down integrally with the operation shaft 47 protrude from the left and right ends of the operation shaft 47 toward the front, and the left on the upper surface of the horizontal frame 22. The rear part of the lower link 52 in the front-rear direction is supported on the upper part and the right part so as to be swingable up and down, and the front ends of the left upper link 51 and the lower link 52 are swung up and down above the support rod 53 in the vertical direction. The left link mechanism 54 is configured by freely supporting, while the front end portions of the right upper link 51 and the lower link 52 are supported on the upper portion of the support rod 53 in the vertical direction so as to be swingable up and down. A link mechanism 54 is configured.

  A left and right rotor shaft 56 is supported between the lower end portions of the left and right support rods 53 so as to be rotatable back and forth around the axis. A plurality of leveling rotors 57 that are prismatic members in the left-right direction that rotate integrally with the rotor shaft 56 are mounted on the rotor shaft 56 in a left-right parallel state to constitute the leveling work machine 6 described above. A gear case 58 is installed in the central portion in the left-right direction of the rotor shaft 56. When the power of the input shaft 18 is input into the gear case 58, the power is transmitted to the rotor shaft 56, and the leveling work machine 6 is Driven. Incidentally, the upper ends of the left and right vertical frames 44 fixed to the horizontal frame 22 are connected by a stay 59 so that the whole is reinforced.

  According to the support mechanism 32, the support shaft 53 is displaced upward by rotating the operation shaft 47 to one side around the shaft, and the rotor shaft 56 (the leveling work machine 6) is lifted. By rotating 47 to the other side around the axis, each support rod 53 is displaced downward, and the leveling work machine 6 is lowered.

6 and 7 are a left side view and a right side view showing configurations of the float support mechanism, the adjustment lever, and the linkage mechanism.
A plurality of the floats 28 are arranged in parallel in the left-right direction. Each float 28 is supported by a planter case 43 (horizontal frame 22) whose rear portion is adjacent to be freely tiltable forward and backward by a float support mechanism 29.

  The float support mechanism 29 has a single left and right float support shaft 61 formed over substantially the entire lateral width of the planting work machine 4 and can be rotated back and forth around a plurality of planter cases 43 arranged in parallel. And a float support arm 62 that swings up and down integrally with the float support shaft 61 is provided for each float 28.

  The base end portion of the adjustment lever 31 described above is attached and fixed to the float support shaft 61. When the adjustment lever 31 is swung back and forth, the float support shaft 61 integrally rotates back and forth around the axis. Each float support arm 62 has a front end (base end) attached and fixed to the float support shaft 61 and supports the rear portion of the float 28 corresponding to the rear end so as to be swingable back and forth. When it is rotated back and forth about the axis, the float support arm 62 integrally swings up and down, and the relative vertical position of the float 28 relative to the planter case 43 and the horizontal frame 22 is changed and adjusted.

  Specifically, by swinging the adjustment lever 31 backward, the float support arm 62 swings downward, and the float 28 is displaced downward with respect to the planting portion 24, while the change lever 31 swings forward. As a result, the float support arm 62 swings upward, and the float 28 is displaced upward with respect to the planting portion 24. In this riding rice transplanter, the planting operation is performed by the planting unit 24 of the planting work machine 4 in a state where the float 28 is grounded to the field by means described later. Therefore, the float 28 based on the planting unit 24 is used. The planting depth of the seedlings on the field is changed by the vertical position change. Since the adjustment lever 31 can be locked at a plurality of locations of the guide body 41, the planting depth of the seedlings on the field can be adjusted in a plurality of stages.

8, 9, and 10 are a left front perspective view, a right front perspective view, and a rear perspective view, respectively, showing the configuration of the lifting operation mechanism and the linkage mechanism.
As shown in FIGS. 6 to 10, the linkage mechanism 34 is supported rotatably on the left and right sides (right side in the illustrated example) of the operation shaft 47 so that the outer peripheral surface of the operation shaft 47 is supported. A rotating shaft 64 that is a cylindrical member to be covered, a leveling-side interlocking arm 66 that projects downward from the rotating shaft 64 so as to swing back and forth integrally with the rotating shaft 64, and the float support shaft 61 are integrated. A planting side interlocking arm 67 projecting upward from the left and right pivot shaft 64 half of the float support shaft 61 so as to swing back and forth, and the leveling side interlocking arm 66 and the planting side interlocking arm 67 are connected. And an interlocking rod 68 that integrally swings both arms 66 and 67 back and forth. The operation shaft 47 and the rotation shaft 64 are connected by the lifting / lowering operation mechanism 33, and the operation shaft 47 and the rotation shaft 64 are integrally rotated around the axis when the lifting / lowering operation mechanism 33 is not operated. Yes.

  Thus, when the linkage mechanism 34 is operated to swing the adjustment lever 31 backward and the float 28 is displaced downward with respect to the planting part 24, the planting work machine 6 is moved downward with respect to the planting part 24. When the operating shaft 47 is rotated to one side so as to be displaced while the adjustment lever 31 is operated to swing forward and the float 28 is displaced upward with respect to the planting part 24, the planting part The operation shaft 47 is rotated around the axis to the other side so that the planting machine 6 is displaced upward with reference to 24. That is, this riding rice transplanter is configured such that the vertical position adjustment of the leveling work machine 6 is linked to the planting depth adjustment via the linkage mechanism 34.

  As shown in FIGS. 8 to 10, the lifting / lowering operation mechanism 33 is attached and fixed to the rotating shaft 64 in a forward projecting state so as to swing up and down integrally with the rotating shaft 64. A plate-shaped base body 69, a plate-shaped fan-shaped driven gear 71 attached and fixed to the operation shaft 47 so as to swing up and down integrally with the operation shaft 47 described above, and the base body 69 are fixed. The lifting / lowering motor (actuator) 72 and the driving gear that is directly transmitted with the power of the lifting / lowering motor 72 and meshes with the driven gear 71 are provided.

  The driven gear 71 is disposed adjacent to the base body 69 so as to face each other in parallel, and the fan-shaped center side is attached and fixed to the operation shaft 47. When the elevating motor 72 is driven in the forward / reverse direction, the driven gear 71 swings up and down via the drive gear, thereby changing the relative rotation position of the operation shaft 47 with respect to the rotation shaft 64.

  The rotation position of the operation shaft 47 is linked to the relative vertical position of the rotor shaft 56 with respect to the planting portion 24 by the above-described configuration, and the rotation position of the rotation shaft 64 is floated by the linkage mechanism 34 described above. The vertical movement position (lifting height relative to the planting depth of the rotor shaft 56 (grading work machine 6) is driven by the driving of the lifting motor 72 described above. Is changed.

  The lifting operation mechanism 33 configured as described above is covered and protected by a box-shaped protective cover body 70. In addition, when the elevating operation mechanism 33 in which the drive of the elevating motor 72 is stopped is not operated, the operation shaft 47 and the rotation shaft 64 are integrally rotated as described above.

Next, various control means of the passenger rice transplanter will be described with reference to FIGS.
FIG. 11 is a block diagram of a control device mounted on the passenger rice transplanter. In this riding rice transplanter, the elevation height of the planting work machine 4 and the vertical position relative to the planting part 24 of the leveling work machine 6 are controlled via the control device 74.

  The control device 74 includes a control unit 76 constituted by a microcomputer or the like. On the output side of the control unit 76, in addition to the lifting motor 72 and the like described above, the expansion and contraction control of the lifting cylinder 21 is performed by supplying and discharging pressure oil to and from the lifting cylinder 21 that lifts and lowers the planting work machine 4. A lift valve 77 which is an electromagnetic switching valve for performing the above is connected.

  On the input side of the control device 74, the leveling work machine lifting / lowering dial 78 and the sensitivity adjustment dial 79, which are operating tools installed in front of the seat 9 in the control unit 8, and the float swing for detecting the forward / backward swing angle of the float 28. A moving angle detection potentiometer (grounding sensor) 81 and a leveling work machine height detection potentiometer (height sensor) 82 for detecting the height of the leveling work machine 6 are connected.

  The float swing angle detection potentiometer 81 is installed on a plate-like float detection side support 83 that is mounted and fixed to the pivot shaft 64 in a forward projecting state so as to swing up and down integrally with the pivot shaft 64. . A base end portion of the detection arm 84 is supported on the float detection side support 83 so as to be able to swing up and down, and a swing shaft on the base end side of the detection arm 84 is connected to the float swing angle detection potentiometer 81. On the other hand, the front end side is connected to the front end portion of the sensing float which is the float 28 close to the detection rod 86 by the detection rod 86 forming a float side detection link.

  Then, when the sensing float 28 supported at the rear part swings upward and enters the front rising state, the detection rod 86 is displaced upward to swing the detection arm 84 upward, while the sensing float 28 swings downward. When the forward and downward state is reached, the detection rod 86 is displaced downward to swing the detection arm 84 downward, and the vertical swing angle of the detection arm 84 is detected by the float swing angle detection potentiometer 81. It becomes possible to detect the front-rear rocking angle of 28.

  Incidentally, since the float swing angle detection potentiometer 81 is installed on the float detection side support 83 swinging with the rotation shaft 64 and is changed in posture integrally with the rotation shaft 64, the float support mechanism 29 detects the sensing float 28. When the vertical position relative to the planting portion 24 is changed, the posture of the float swing angle detection potentiometer 81 is also integrally changed, and the detection value of the float swing angle detection potentiometer 81 is hardly changed. . For this reason, it is possible to detect an accurate front-rear rocking angle of the sensing float 28 regardless of the vertical position of the sensing float 28.

  The control unit 76 performs automatic elevation control of the planting work machine 4 that grounds the sensing float 28 to the field via the float swing angle detection potentiometer 81. Specifically, when the planting work machine 4 is lowered and the sensing float 28 is vigorously buried in the field, the soiling pressure from the field causes the sensing float 28 to be in a forwardly raised state, while the planting work machine 4 is raised. When the sensing float 28 is separated from the field scene, the sensing float 28 is lowered by its own weight. Therefore, the posture of the sensing float 28 is detected via the float swing angle detection potentiometer 81, and the sensing float 28 is in a horizontal state. The control unit 76 drives the planting work machine 4 up and down through the up-and-down valve 77 so as to become.

  The sensitivity adjustment dial 79 is an operating tool for setting the vertical swing sensitivity of the sensing float 28. Specifically, a hydraulic actuator capable of changing a load necessary for vertically swinging the s-sensing float 28 is provided on the front side of the upper surface of the sensing float 28, and the adjustment operation of this hydraulic actuator is sensitive. The adjustment dial 79 is used. Thereby, the contact detection sensitivity of the sensing float 28 is set.

  The leveling work machine height detection potentiometer 82 is installed on a plate-like leveling work machine detection-side support 87 attached and fixed to the rotation shaft 64 in a rearward protruding state so as to swing up and down integrally with the rotation shaft 64. Has been. The leveling work machine height detection potentiometer 82 is mechanically connected to the operation shaft 47 by a leveling work machine side detection link 88 and the rotation position of the rotation shaft 64 relative to the operation shaft 47. Is configured to be detectable. By detecting the rotational position, the vertical position (height) of the leveling work machine 6 relative to the float 28 (relative to the planting depth) can be detected by the above-described configuration.

  When the relative height with respect to the planting depth of the leveling work machine 6 is set by the leveling work machine lifting / lowering dial 78, the control unit 76, based on the detection result of the leveling work machine height detection potentiometer 82, The leveling work machine 6 is driven to move up and down to the set predetermined height by the lifting motor 72.

DESCRIPTION OF SYMBOLS 3 Traveling machine body 4 Planting work machine 6 Leveling work machine 23 Seedling stand 24 Planting part 27 Change lever 31 Adjustment lever 33 Lifting action mechanism 34 Interlocking mechanism 72 Lifting motor (actuator)
82 Leveling machine height detection potentiometer (height sensor)

Claims (1)

A traveling machine body (3), a seedling stage (23) placed behind the traveling machine body (3) to place seedlings, and a seedling stage (23) placed below the seedling stage (23). A planting part (24) for scraping off the seedlings and planting the seedling in the field, a leveling work machine (6) arranged in front of the planting part (24) and leveling the field, and a leveling work machine (6) The raising / lowering operation mechanism (33) which raises / lowers, the adjustment lever (31) which adjusts planting depth by changing the ground height of the planting part (24), and the planting part (24 by adjustment lever (31)) ) Change the distance between the interlocking mechanism (34), which links the elevation height of the leveling work machine (6) with the change in ground height, and the seedling stand (23) and the planting part (24). A change lever (27) for changing the scraping amount of the seedling from the seedling stage (23) by the part (24), and the seedling stage (23) and the planting part ( 4) constitutes at least a part of the planting work machine (4) arranged behind the traveling machine body (3), and the lifting operation mechanism (33) is provided on one side of the planting work machine (4) on the left and right sides. And an interlocking mechanism (34), an adjustment lever (31) and a change lever (27) are arranged on the other side, and the leveling work machine (6 ) Is provided with an actuator (72) for changing the elevation height, and the posture of the height sensor (82) for detecting the height of the leveling work machine (6) is changed according to the change of the planting depth. A transplanter configured to detect a relative height of the leveling machine (6) with respect to the planting depth by supporting .

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