JP2012179014A - Seedling transplanter - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a seedling transplanter provided with a turning rotor for ground working which can level a field without leveling too much even upon turning.SOLUTION: The seedling transplanter includes: right and left ground-leveling rotors 27a and 27b for leveling the field surface, provided for a lower part of a seedling planting part 4 for planting seedlings to the field, the seedling planting part provided for a rear part of a traveling vehicle body 2; and right and left rear wheel gear cases 18 for supplying a driving force of an engine 20 to rear wheels 11. The seedling transplanter also includes right and left separate rotor drive shafts 70a and 70b for each independently supplying the driving force from the right and left gear cases 18 to the ground-leveling rotor 27a and 27b on both right and left sides, and is configured so that the ground-leveling rotor driving shafts 70a and 70b on a rotation inside rotate at lower speed than the ground-leveling rotor driving shafts 70a and 70b on a rotation outside upon rotation operation, thereby preventing mud in the field from being too soft and flowing with the ground-leveling rotors 27a and 27b in the rotation inside.

Description

  The present invention relates to a seedling transplanter with a ground work device.

In a seedling transplanter equipped with a seedling planting apparatus with a float, a configuration is known that includes a rotor for leveling the field just before seedling planting by the seedling planting apparatus.
In the present specification, the forward direction of the seedling transplanter is referred to as the front side, the backward direction is referred to as the rear side, and the left-right direction toward the forward direction is referred to as the left side and the right side, respectively.

JP 2009-118778 A JP-A-2005-124442

In the seedling transplanters of Cited Documents 1 and 2, both the inside and outside of the turning of the leveling rotor rotate at the same speed. Therefore, when leveling work is performed without raising the planting part during turning, the leveling rotor contacts the field inside the turning. As a result, the field becomes too smooth, the field becomes soft, and the mud that flows out pushes down the seedlings.
In addition, if the farm field is soft, the planting depth of the seedling becomes deeper than the set depth, and there is a problem that the growth of the seedling becomes slow and the yield is reduced.
The subject of this invention is providing the seedling transplanter provided with the turning rotor for the ground work which can level the field so that an agricultural field may not be leveled even at the time of turning.

The above-mentioned problem of the present invention is solved by the following means.
The invention according to claim 1 includes an engine (20), a traveling vehicle body (2) that travels on a farm field with the driving force of the engine (20), and a traveling vehicle body (2) on the traveling vehicle body (2). A steering member (handle) (34) mounted on the vehicle, a seedling planting part (4) for planting seedlings in the field at the rear of the traveling vehicle body (2), and a field scene under the seedling planting part (4) Left and right leveling rotating bodies (leveling rotors) (27a, 27b) and left and right transmission cases (rear wheel gear cases) for supplying the driving force of the engine (20) to the rear wheels (11, 11) of the traveling vehicle body (2) (18, 18) In the seedling transplanter provided with (18, 18), left and right rotor transmission shafts for independently supplying driving force from the left and right transmission cases (18, 18) to the left and right ground leveling rotary bodies (27a, 27a), respectively ( 72, 72) and run by operating the steering member (handle) (34) A seedling transplanter characterized in that when the vehicle body (2) is swung, the rotor drive shaft (70b) on the inside of the turn rotates at a lower speed than the rotor drive shaft (70b) on the outside of the turn. It is.

  The invention according to claim 2 includes an engine (20), a traveling vehicle body (2) that travels on a farm field with the driving force of the engine (20), and a traveling vehicle body (2) for steering the traveling vehicle body (2). A steering member (handle) (34) mounted on the vehicle, a seedling planting part (4) for planting seedlings in the field at the rear of the traveling vehicle body (2), and a field scene under the seedling planting part (4) Left and right leveling rotating bodies (leveling rotors) (27a, 27b) and left and right transmission cases (rear wheel gear cases) for supplying the driving force of the engine (20) to the rear wheels (11, 11) of the traveling vehicle body (2) (18, 18) In the seedling transplanter provided with (18, 18), left and right rotor transmission shafts (each independently supplying driving force to the left and right leveling rotary bodies (27a, 27b) from the left and right transmission cases (18, 18), respectively) 72, 72) and steering by a steering member (handle) (34) A steering detection device (potentiometer) (92) for detecting the direction is provided, and the leveling rotator (27a) inside the turning detected by the steering detection device (92) rotates at a lower speed than the leveling rotator (27a) outside the turning. It is a seedling transplanter characterized by having a power transmission mechanism.

  The invention according to claim 3 is provided with a pair of central leveling rotators (27b, 27b) arranged in parallel between the left and right leveling rotators (27a, 27a), and a pair of central leveling rotators (27b, 27b). 27b) are provided with second transmission cases (rotor transmission cases) (73, 73) having left and right second transmission shafts (73a, 73a) for transmitting driving force from the left and right leveling rotators (27a, 27a) on both the left and right sides of 27b). The seedling transplanter according to claim 1 or 2, wherein the seedling transplanter is provided.

  The invention described in claim 4 is a float (55, 56) for detecting the vertical position of the seedling planting part (4) below the seedling planting part (4) and behind the leveling rotator (27a, 27b). A pair of left and right float support members (65,) and a pair of left and right leveling rotator support members arranged and supporting the float (55, 56) and the leveling rotator (27a, 27b). (Leveling rotor frame) (68, 68) is provided in the seedling planting part (4), and the leveling rotator support member (68, 68) is slid in the front-rear direction to move forward and backward of the leveling rotator (27a, 27a). A pair of connecting members (71, 71) having long holes (71a) in the front-rear direction for adjusting the positions are provided on the float support member (seedling planting support member) (65). The seedling transplanter according to any one of claims 1 to 3 A.

  According to a fifth aspect of the present invention, there is provided an inclination for detecting an inclination angle on either the left or right side of a pair of left and right second transmission cases (rotor transmission cases) (73, 73) each having a second transmission shaft (73a, 73a). When an angle detection member (tilt angle sensor) (89) is provided and the angle detection member (89) detects an angle that is greater than or less than a set angle (for example, an angle at which the center leveling rotor 27b does not sink into the mud), an operator The seedling transplanter according to claim 3 or 4, further comprising a notifying member (buzzer or lamp) (91) for informing the user.

  According to the first aspect of the present invention, when there is a steering operation of the steering member (34), when the traveling vehicle body (2) is turned by operating the steering member (34), the rotor drive shaft inside the turn Since (70b) rotates at a lower speed than the rotor drive shaft (70b) outside the turning, the rotational speed of the leveling rotator (27a, 27b) inside the turning is higher than the rotational speed of the leveling rotator (27a, 27b) outside the turning. Therefore, it is possible to prevent the mud in the field that is leveled by the leveling rotator (27a, 27b) inside the turning from becoming too soft and flowing, and the leveling accuracy at the field edge becomes better than before, When the seedling transplanter (4) is turned down when turning the seedling transplanter in a field where the planting posture is stable and the turning mark remains at the time of turning at the field edge, The effect of stabilizing the planting accuracy and seedling planting posture It can be volatile matter.

    According to the second aspect of the invention, the turning direction can be determined by the difference in rotation between the left and right rear wheels (11) by the vehicle speed sensors (93, 93) of the left and right rear wheels (11). The difference in rotation of the rear wheel (11) can be determined not at the same time as the start of turning, but at a point that has advanced somewhat in the turning direction. For this reason, the field is devastated by the leveling rotator (27a) inside the turn immediately after the start of the turn.

  On the other hand, since the steering detection sensor (92) can determine the turning direction at the same time as the turning steering of the handle (34) is started, the rotation speed of the leveling rotator (27a) inside the turning is lowered at the same time as the turning is started. It can be changed and the field is prevented from being damaged immediately after the start of turning.

  When the steering detection sensor (92) detects the right or left turn steering of the steering wheel (34), the control device (100) disconnects the corresponding side clutch (not shown) based on the control signal from the steering detection sensor (92). Thus, the driving force to the rear wheel axle (11a) inside the turning is cut off, but the rear wheel (11) inside the turning rotates as the traveling vehicle body (2) travels, and the rotational force is applied to the rotor transmission shaft (72). ), The leveling rotor (27a, 27b) inside the turn rotates.

  Therefore, according to the second aspect of the present invention, when the steering detection device (92) detects the operation of the operation member (34), the turning direction is determined, and the rotational speed of the leveling rotator (27a, 27b) inside the turning is determined. By reducing the amount, the mud in the field that is leveled by the leveling rotator (27a, 27b) inside the turning is prevented from flowing too softly, so that the leveling accuracy of the field edge is improved more than before. , Seedling planting posture is stable.

  According to the invention described in claim 3, in addition to the effects of the inventions described in claims 1 and 2, a pair of leveling rotators (27b, 27b) are arranged in parallel at the center, so The central leveling rotator (27b, 27b) can also have different rotational speeds on the inside and outside of the turn, so that mud on the inside of the turn is prevented from flowing too softly, and leveling of the field edge is prevented. The accuracy is better than before and the planting posture of the seedling is stabilized.

  According to the invention described in claim 4, in addition to the effect of the invention described in any one of claims 1 to 3, the float support member (seeding planting part support member) (65) and the rotor support frame (68) are connected. The rotor support frame (68) is slid in the front-rear direction along a long hole (71a) formed in the connecting member (71) which is long in the front-rear direction, so that the front-rear position of the leveling rotary body (27a, 27b) can be adjusted. Therefore, the front-rear distance between the float (55, 56) and the leveling rotator (27a, 27b) can be changed. In this way, when the amount of water in the field is large, widening the front-rear interval can prevent mud and water generated by the rotation of the leveling rotator (27a, 27b) from concentrating on both sides of the float (55, 56). (55, 56) is prevented from floating due to mud and water flow resistance, and the seedling planting depth is stabilized. Further, when the amount of water in the field is small, by narrowing the front-rear distance, the mud soil leveled by the leveling rotator (27a, 27b) is laid on the float (55, 56) before flowing to the left and right of the float (55, 56). Therefore, it is possible to prevent the muddy water stream from flowing away and filling the seedling, and the growth of the seedling is stabilized.

  According to the invention described in claim 5, in addition to the effect of the invention described in claim 3 or 4, the inclination angle of the case (73) with respect to the horizontal plane is set to one of the pair of left and right rotor transmission shaft cases (73). Since the inclination angle sensor (89) including a potentiometer for detection is provided, the inclination angle sensor (89) is greater than (or less than) a predetermined inclination angle at which the center leveling rotator (27b, 27b) does not sink into the mud. When the angle is detected, it is possible to prevent the center leveling rotator (27b, 27b) from being damaged by providing a notifying member (buzzer or lamp) (91) for informing the operator.

It is a side view of the riding type seedling transplanter of the Example of this invention. It is a top view of the riding type seedling transplanter of FIG. It is a principal part side view of the seedling planting part of the riding type seedling transplanting machine of FIG. It is a principal part rear view of the support structure of the seedling mounting stand of the riding type seedling transplanter of FIG. It is the schematic of the drive mechanism of the rotor of the riding type seedling transplanter of FIG. It is a partial detail drawing of the drive mechanism of the rotor of the riding type seedling transplanter of FIG. It is a principal part top view of the seedling planting part of the riding type seedling transplanting machine of FIG. It is a partial control block diagram of the riding type seedling transplanter of FIG. It is a side view of the rotor support frame of the riding type seedling transplanter of FIG. FIG. 2 is a detailed view of a rotor drive mechanism of the riding seedling transplanter of FIG. 1. It is detail drawing of the other Example of the drive mechanism of the rotor of the riding type seedling transplanter of FIG. FIG. 12 (a) is an internal structural view of the power transmission mechanism portion to the rotor of the riding seedling transplanter in FIG. 1, and FIG. 12 (b) is a sectional view of the end of the rotor drive shaft. Fig. 12C is an enlarged view (Fig. 12 (c)) in a circle C and a sectional view (Fig. 12 (d)) of a hub fitted into the end of the rotor drive shaft. It is an internal structure figure (FIG.13 (a)) of the rotor power transmission mechanism part of the riding type seedling transplanter of FIG. 1, and sectional drawing (FIG.13 (b)) of FIG.13 (a). It is sectional drawing (FIG.14 (a) and enlarged view (FIG.14 (b)) in the circle C of FIG.14 (a) of the cap part of the fuel tank of the riding type seedling transplanter of FIG. It is sectional drawing (FIG.15 (a)) of the boss | hub part of the combustion tank cap part of the riding type seedling transplanter of FIG. 1, and the enlarged view (FIG.15 (b)) in the circle C of FIG.15 (a).

Hereinafter, preferred embodiments of the present invention will be described with reference to the drawings.
FIG. 1 and FIG. 2 are a side view and a plan view of a riding seedling transplanter which is an embodiment using the present invention. The riding seedling transplanter 1 has a seedling planting portion 4 mounted on the rear side of a traveling vehicle body 2 via a lifting link device 3 so as to be lifted and lowered.

The traveling vehicle body 2 is a four-wheel drive vehicle including a pair of left and right front wheels 10 and 10 and a pair of left and right rear wheels 11 and 11 as drive wheels, and a transmission case 12 is disposed at the front of the fuselage. Front wheel final cases 13, 13 are provided on the left and right sides of the case 12, and the left and right front wheels are mounted on the left and right front wheel axles projecting outward from the respective front wheel support portions capable of changing the steering direction of the left and right front wheel final cases 13, 13 10 and 10 are respectively attached.
Further, a seedling planting portion 4 is mounted on the rear side of the traveling vehicle body 2 so as to be movable up and down via a lifting link device 3, and a main body portion of the fertilizer application device 5 is provided on the upper rear portion of the traveling vehicle body 2.

  Further, the front end portion of the main frame 15 is fixed to the rear portion of the transmission case 12, and a rear wheel rolling shaft (not shown) provided horizontally in the front and rear at the center of the rear end of the main frame 15 is used as a fulcrum. The rear wheel gear cases 18 and 18 are supported in a freely rolling manner, and the rear wheels 11 and 11 are attached to a rear wheel axle 11a that protrudes outward from the rear wheel gear cases 18 and 18.

  The engine 20 is mounted on the main frame 15, and the rotational power of the engine 20 is transmitted to the transmission case 12 via a hydrostatic continuously variable transmission (HST) 23 and the like. The rotational power transmitted to the mission case 12 is shifted by a transmission in the case 12 and then separated into traveling power and external power to be extracted.

  A part of the traveling power is transmitted to the front wheel final cases 13 and 13 to drive the front wheels 10 and 10, and the rest is transmitted to the rear wheel gear cases 18 and 18 to drive the rear wheels 11 and 11. Further, the external take-out power is transmitted to a planting clutch case 25 provided at the rear part of the traveling vehicle body 2, and then transmitted to the seedling planting unit 4 by a planting transmission shaft 26.

A seat 31 is installed at the top of the engine 20. A front cover 32 incorporating various operation mechanisms is provided in front of the seat 31, and a handle 34 for steering the front wheels 10 and 10 is provided above the front cover 32. The left and right sides of the lower end of the front cover 32 are horizontal floor steps 35. The floor step 35 is provided with a number of holes (see FIG. 2), and mud on the shoe of the worker walking through the step 35 falls to the field. The rear part on the floor step 35 is a rear step 36 that also serves as a rear wheel fender.
In addition, on the left and right sides of the front part of the traveling vehicle body 2, a spare seedling stage 38 on which supplementary seedlings are placed may be provided. The elevating link device 3 has a parallel link configuration, and includes one upper link 40 and a pair of left and right lower links 41, 41. These links 40, 41, 41 are pivotally attached to a rear-view portal-shaped link base frame 42 erected on the rear end of the main frame 15, and a vertical link 43 is connected to the tip side thereof. ing.

  And the connecting shaft 44 rotatably supported by the seedling planting part 4 is inserted and connected to the lower end part of the vertical link 43, and the seedling planting part 4 is connected so as to be able to roll around the connecting shaft 44. An elevating hydraulic cylinder 46 is provided between a support member fixed to the main frame 15 and a tip of a swing arm (not shown) integrally formed with the upper link 40, and the cylinder 46 is expanded and contracted hydraulically. As a result, the upper link 40 rotates up and down, and the seedling planting part 4 moves up and down while maintaining a substantially constant posture.

  The seedling planting section 4 has a four-row planting structure, a transmission case 50 that also serves as a frame, a mat seedling, and a left and right reciprocating motion to supply seedlings one by one to the seedling outlets 51a,. When all the seedlings are supplied to the seedling outlet 51a, ..., the seedling mount 51 for transferring the seedling downward by the seedling feeding belt 54, ..., seedling planting for planting the seedling supplied to the seedling outlet 51a, ... in the field Attaching device 52,..., A pair of left and right drawing markers (not shown) for drawing the aircraft path in the next stroke to the topsoil surface, and the like are provided. In the lower part of the seedling planting part 4, a center float 55 is provided in the center, and side floats 56, 56 are provided on the left and right sides thereof.

  When these floats 55, 56, 56 are grounded on the mud surface of the field, the aircraft moves forward, and the floats 55, 56, 56 slide while leveling the mud surface. Seedlings are planted by. Each of the floats 55, 56, and 56 is rotatably attached so that the front end side thereof moves up and down according to the unevenness of the soil surface of the field, and the vertical movement of the front part of the center float 55 is a float inclination angle sensor during planting work. 94 (FIG. 3), and according to the detection result, the seedling planting part 4 is moved up and down by switching the hydraulic valve that controls the lifting hydraulic cylinder 46, so that the seedling planting depth is always maintained constant. To do.

  A rotor 27 (27a, 27b) which is an example of a leveling device is attached to the seedling planting unit 4. Further, the seedling mount 51 is configured to slide in the left-right direction using a support roller 65a (FIG. 3) of a rectangular support frame 65 that is full in the left-right direction and the up-down direction to support the entire seedling planting unit 4 as a rail. is there.

  The fertilizer applicator 5 feeds the granular fertilizer stored in the fertilizer hopper 60 by a certain amount by the feeding portions 61,... And applies the fertilizer to the left and right sides of the floats 55, 56, 56 with the fertilizer hoses 62,. Guide to a guide (not shown), ..., and drop into a fertilization groove formed in the vicinity of the side of the seedling planting line by a grooved body 64 (Fig. 1) provided on the front side of the fertilization guide, ... It has become. The air generated by the blower 58 driven by the blower electric motor 53 is blown into the fertilizer hoses 62,... Via the air chamber 59 that is long in the left-right direction, and the fertilizer in the fertilizer hoses 62,. It is designed to be transported.

The main part of the rotor support structure is shown in FIG. 3 (side view) and FIG. 4 (back view).
The rotor support structure includes a beam member 66 whose upper ends are rotatably supported on both side members 65b of the support frame 65 of the seedling stage 51, a support arm 67 fixed to both ends of the beam member 66, and the support. A rotor support frame 68 that is rotatably attached to the arm 67 is provided. Further, a rotor raising / lowering motor 63 is provided on the axial extension line of the beam member 66.

  A drive shaft 70 (70a, 70b) (FIG. 4) of the leveling rotor 27 (27a, 27b) is attached to the lower end of the rotor support frame 68. The lower end portion of the rotor support frame 68 is connected to a connecting member 71 that is rotatably attached to the transmission case 50.

  As shown in FIG. 3, power to the drive shaft 70 a (FIG. 4) of the leveling rotor 27 a is transmitted from the gear in the gear case 18 of each rear wheel 11 to the gear in the rotor drive case 87. The rotor drive case 87 is provided with a hollow output shaft 85 facing the rear side of the machine body, and the drive shaft 70a is provided with a leveling transmission shaft 72 facing the front side of the machine body. Then, by inserting the leveling transmission shaft 72 into the output shaft 85, the driving force can be transmitted to the left and right leveling rotors 27a.

  If the machined front end side of the leveling transmission shaft 72 is formed in a hexagonal (polygonal) column shape or splined, the leveling transmission shaft 72 can be prevented from rotating without being synchronized with the rotation of the output shaft 85. In addition, the driving rotational speed of the ground leveling rotors 27a and 27b is increased, and it is prevented that the mud is wound up to reduce the visibility of the field scene, and the driving rotational speed is decreased, and the leveling of the field is not sufficiently performed. It is prevented that the planting depth is not uniform.

In addition, by covering the connection portion between the output shaft 85 and the leveling transmission shaft 72 and the periphery thereof with a stretchable covering boot 85a, mud soil adheres to the connection portion between the output shaft 85 and the leveling transmission shaft 72, and the leveling rotor 27a, It is possible to prevent the operation of 27b from being stopped, and it is possible to prevent lubricant such as grease from falling from the connecting portion to the field and contaminating water quality and soil quality.
And, a U-shaped receiving member (not shown) in plan view is arranged at the rear end lower part of the main frame 15 so as to face the rear of the machine body, and the receiving member is arranged in contact with the leveling transmission shaft 72, or It arrange | positions in contact with the covering boot 85a provided in the connection part of the output shaft 85 and the leveling transmission shaft 72. FIG.

  With the above configuration, when the leveling rotors 27a and 27b perform leveling work, the receiving member receives the leveling transmission shaft 72 even if the leveling transmission shaft 72 may come off from the output shaft 85 due to contact resistance with the field or the like. Thus, the leveling transmission shaft 72 can be prevented from hanging down toward the farm scene, and the leveling transmission shaft 72 is prevented from being damaged when the machine is moved without noticing the state where the leveling transmission shaft 72 is stuck in the farm scene. The durability of the aircraft is improved.

FIG. 5 shows a schematic diagram of the drive mechanism of the leveling rotor 27 (27a, 27b), and FIG. 6 shows a partial detailed view of the drive mechanism of the leveling rotor 27 (27a, 27b).
Power is transmitted from the transmission case 12 to each rear wheel gear case 18 from a transmission shaft 18a having a universal joint 18b at the intermediate portion, and the rear wheel gear case 18 passes through the rotor drive case 87 and the rear wheel drive shaft 11a. A driving force is transmitted to the wheel 11. Further, when the drive shaft 70a is driven from the rear wheel gear case 18 via the leveling transmission shaft 72, the leveling rotors 27a on both sides rotate.

In addition, a pair of ground leveling rotors 27b and 27b are arranged in parallel at the center in the left-right direction of the machine body, and the pair of leveling rotors 27b and 27b are respectively driven by rotor drive shafts 70b and 70b arranged in the left and right direction. Power from the drive shafts (rotor transmission shafts (square pipes)) 73a and 73a (FIG. 12) in the rotor drive shaft cases 73 and 73 is transmitted to the rotor drive shafts 70b and 70b. Further, the rotor drive shafts 70b and 70b arranged side by side are also shown in FIG.
The power transmitted from the drive shafts 70a, 70a on both sides of the machine body to the left and right rotor drive shafts 70b, 70b is transmitted to the bearings 70c, 70c at the center of the machine body side of the rotor drive shafts 70b, 70b. The bearings 70c and 70c are separated from each other.

  Further, as shown in FIG. 5, each drive shaft 70a on both sides of the machine body is provided with a bevel gear 70v, and the bevel gear 70v meshes with a bevel gear 72v provided at the tip of a leveling transmission shaft 72, thereby transmitting a mission case. The driving force from the 12 side is transmitted.

   Although only one of them is shown in FIG. 12, a pair of prism pipe-shaped rotor transmission shafts 73a and 73a in the left and right rotor transmission shaft cases 73 and 73 are arranged in parallel to the left and right rotor drive shafts 70b and 70b in the center. Power is transmitted to the leveling rotors 27b and 27b. At this time, if the rotation speed of the rear wheel 11 inside the turn decreases, the rotation speed of the leveling rotor 27a inside the turn also decreases.

In the conventional configuration, since the inner rear wheel 11 is only idling during turning, the leveling rotor 27a inside the turning is also idling simultaneously. However, in this embodiment, the rotational speed of the leveling rotor 27b inside the turning is also reduced. Therefore, it is possible to prevent the mud inside the turning from becoming too soft and to flow, improving the leveling accuracy of the field edge, and stabilizing the seedling planting posture.
In the above configuration, when turning the seedling transplanting unit 4 while lowering the seedling transplanting machine when turning the seedling transplanting machine in a field where turning marks remain when turning at the field edge, the leveling accuracy of the field edge and planting of the seedling are particularly improved. The effect of stabilizing the attached posture can be demonstrated.

  When the seedling transplanter 1 turns, the steering operation of the handle 34 is detected by the handle turning (steering detection) sensor 92 made of a potentiometer or the like, and the turning detected by the steering wheel turning (steering detection) sensor 92 is detected. By setting the inner side clutch (not shown) to the “disconnected” state by the control device 100, the driving force to the transmission shaft 18a on the corresponding side is cut off. As the driving force to the rear wheel gear case 18 is cut off, the rear wheel 11 inside the turn does not drive and rotate but rotates with contact resistance with the farm scene as the machine turns.

FIG. 10 shows a detailed view of the power transmission mechanism of the rotors 27a and 27b.
When the rear wheel 11 on the inside of the turn rotates, the rear wheel axle 11a rotates, and the driven spur gear 80 attached to the rear wheel axle 11a rotates to drive the driving spur gear 81 that transmits the driving force from the transmission shaft 18a. Rotate. One end of an input shaft 82 that transmits rotational driving force to the leveling transmission shaft 72 is inserted into the drive spur gear 81, and the other end of the input shaft 82 is connected to the leveling transmission shaft 72. Since the driving bevel gear 83a that meshes with the driven bevel gear 83b that is pivotally attached to the end portion is pivotally attached, the driving force by which the rear wheel 11 on the inside of the turning rotates with the turning traveling of the body is the side rotor 27a on the inside of the turning. The side rotor 27a and the center rotor 27b are rotated at a low speed by being transmitted to the center rotor 27b.

  The above-described configuration utilizes an existing transmission configuration, and the rotational speed of the rotor 27 is extremely low. If it is necessary to control the rotational speed, the rotors 27a and 27b may be driven by the transmission mechanism shown in FIG. At this time, the input shaft 82 is not provided.

A leveling drive motor 84 for driving and rotating the leveling transmission shaft 72 is provided in the rear wheel gear case 18. The leveling drive motor 84 is a variable speed motor whose rotation speed can be changed by a signal from the control device 100. When the turning direction is detected, the leveling drive motor 84 on the inner side of the turning is configured to be switched to low rotation.
This configuration increases the cost, but the side rotor 27a and the center rotor 27b inside the turn do not roughen the field, and it is easy to set the number of rotations that can be leveled, and the leveling performance at the time of turning is improved. If an operation member such as a dial for adjusting the rotation speed of the leveling drive motor 84 is provided, the rotation speed of the leveling rotor 27 can be freely set without being restricted by the vehicle speed.

   Thus, by determining the turning direction based on the detection value of the steering detection sensor 92 and reducing the rotation speed of the leveling rotor 27b inside the turning, it is possible to prevent the mud inside the turning from becoming too soft and flowing. The leveling accuracy of the field edge is improved and the planting posture of the seedling is stabilized.

  By providing a pair of leveling rotors 27b and 27b arranged side by side as a leveling rotor in the center of the machine body, the pair of central leveling rotors 27b and 27b, like the pair of left and right rear wheel shafts 11a and 11a, when turning the seedling transplanter 1, Since the rotation speed can be different between the inside and outside the turning, mud soil inside the turning is prevented from flowing too softly, the leveling accuracy of the field edge is improved more than before, and seedling planting Posture is stable.

  As shown in FIG. 7, the center leveling rotors 27 b and 27 b in front of the center float 55 (referred to as center rotors) 27 b and 27 b in front of the center float 55 in relation to the arrangement positions of the floats 55 and 56 are leveling rotors in front of the side float 56 ( (It may be called a side rotor) 27a is arrange | positioned ahead. Therefore, the power to the drive shaft 70a of the left and right leveling rotor 27a is transmitted from the gear in the rear wheel gear case 18 to the gear in the rotor drive case 87, and from the rotor drive case 87 via the leveling transmission shaft 72 and the like. Is done. Also, power is transmitted to the rotor drive shafts 70b, 70b of the pair of ground leveling rotors 27b, 27b arranged in parallel from the end of the corresponding drive shaft 70a of the leveling rotor 27a on the vehicle body side. As described above, power is transmitted to the shaft 70a via the rotor transmission shaft 73a (see FIG. 12) in the rotor transmission shaft case 73.

As shown in FIG. 7, the clutch shifter 97 of the rotor drive case 87 and the clutch cable 99 for operating the shifter 97 are arranged inside the rear wheel gear case 18 and at the center of the fuselage.
Further, the leveling rotors 27 b and 27 b are suspended by a pair of link members 76 and 77 whose upper ends are supported by a beam member 66 via a reinforcing member 74 that bridges the rotor transmission shaft case 73 via a spring 78. .
As shown in FIG. 4, the pair of link members 76 and 77 are connected to a first link member 76 whose one end is fixedly supported by a beam member 66 and the other end of the first link 76 so that one end thereof is freely rotatable. Between the other end of the second link member 77 and the mounting piece 74a (see FIG. 7) supported by a reinforcing member 74 that bridges both rotor transmission shaft cases 73. A spring 78 is connected.

  By the operation of the rotor raising / lowering motor 63, the beam member 66 is rotated in the direction in which the first link member 76 is rotated upward. As the beam member 66 is rotated, the beam member 66 is rotated via the rotor support frame 68. The leveling rotors 27a and 27b suspended by the link member 76, the second link member 77, and the spring 78 can be raised upward. When the leveling rotors 27a and 27b are moved upward, the pair of leveling rotors 27b and 27b are also simultaneously moved upward via the rotor drive shafts 70b and 70b.

  In the present embodiment, the leveling rotors 27a and 27b at a height of 40 mm from the farm scene at the standard position can be raised by a maximum of 15 mm from the standard position by the rotation of the rotor lifting motor 63, and the rotor lifting motor 63 has a reverse direction. It is set so that it can be lowered by up to 15 mm from the standard position by turning.

  As shown in FIG. 4, since the leveling rotors 27a and 27b can be moved up and down by the rotor lifting / lowering motor 63, when planting seedlings while leveling the edge with the leveling rotors 27a and 27b, The rotor raising / lowering motor 63 interlocks the switching from the working state of the leveling rotors 27a, 27b, in which the shaft of the beam member 66 is rotatable, to the storage state of the leveling rotors 27a, 27b, in conjunction with the raising of the seedling planting part 4. An automatic configuration can be adopted.

Since the leveling rotor 27b is supported by the seedling planting part 4 via a spring 78 or the like so as to escape from the lower links 41, 41 of the lifting link device 3 when the seedling planting part 4 is raised, the leveling rotor 27a is It is supported by the seedling planting part 4 with flexibility.
Further, the leveling rotors 27a and 27b may be adjusted to a set height by a rotor height adjustment dial provided on a meter panel (not shown) provided in the vicinity of the control seat 31.

  When the rotor height is manually set, the leveling rotors 27a and 27b may not be used during the next seedling planting operation while the leveling rotors 27a and 27b are moved to the storage position. Such a problem can be prevented by adopting a configuration in which 27a and 27b are adjusted to the set height.

As shown in FIG. 4, a rotor raising / lowering motor 63 is attached to one end of the beam member 66, and when the seedling planting part 4 is raised, the leveling rotors 27a and 27b are lowered, and the seedling planting part 4 is lowered. Then, the leveling rotors 27a and 27b may be configured to rise. As a result, the leveling rotors 27a and 27b can be lowered during coasting turning to level the turning trace alone. In this case, when the up / down link switch (float inclination angle sensor) 94 (FIG. 3) that is turned on when the upper link 40 of the seedling planting part 4 is rotated more than a predetermined height is actuated, the control device 100 operates the rotor up / down motor. 63 is controlled. In such a configuration, the rotor elevating motor 63 can be automatically operated, so that the operability is improved as compared with the prior art.
Further, as shown in FIG. 1, a rotor cover 37 is provided on the rear upper side of the leveling rotors 27 a and 27 b so that mud is not applied on the floats 55 and 56.

  A joint arm 71 for connecting the both side members 65b for float support and the rotor support frame 68 is provided, and a long hole 71a (FIG. 3) long in the front-rear direction is formed in the joint arm 71, along the long hole 71a. Then, the front and back positions of the leveling rotor can be adjusted by sliding the rotor support frame 68 in the front and rear direction. FIG. 9 shows two examples in which long holes 71a are formed in the joint arm 71 in the front-rear direction. After the adjustment, the position of the long hole 71a with respect to the joint arm 71 is prevented from shifting, and is tightened and fixed with an appropriate fastening member.

  In this way, the rotor support frame 68 is slid in the front-rear direction by the joint arm 71 so that the front-rear distance between the floats 55 and 56 and the leveling rotor 27 can be changed. With this configuration, when the amount of water in the field is large, widening the front-rear distance can prevent mud and water generated by the rotation of the leveling rotor 27 from concentrating on both sides of the floats 55 and 56, so that the floats 55 and 56 are mud. The floating of the seedling is prevented by the resistance of water and water flow and the planting depth of the seedling is stabilized. Further, when the amount of water in the field is small, the distance between the front and rear is narrowed so that the mud soil leveled by the leveling rotor 27 can be laid by the floats 55 and 56 before flowing to the left and right of the floats 55 and 56. Prevents the seedlings from being washed away and buried, and the growth of the seedlings is stabilized.

  Further, in place of the rotor lifting / lowering motor 63 shown in FIG. 4, the support arm 67 is rotated in the front-rear direction by operating the rotor height adjustment lever 69 (FIG. 1) supported by the support arm 67, so that the rotor support frame 68 is moved. It may be moved up and down.

As described above, the ground leveling rotors 27a and 27b are normally raised by operating the rotor raising / lowering motor 63, but in this embodiment, the seedling planting device 52 is caused to transmit the power of the engine 20 to the seedling planting device 52. When a saddle clutch (not shown) is cut by operating the saddle clutch lever 19 (FIG. 2), the rotor lifting / lowering motor 63 is actuated to automatically lower the leveling rotors 27a and 27b and perform leveling work. It is the composition to be able to.
For this purpose, a saddle clutch lever sensor 19a (FIG. 4) for detecting whether the saddle clutch lever 19 (FIG. 2) is turned on or off is provided.
Therefore, when the heel clutch is disengaged by operating the heel clutch lever 19 in order to adjust the number of planting strips in the headland and the vicinity thereof, the heel clutch lever sensor 19a detects the disconnection of the heel clutch lever 19 and controls it. The leveling rotors 27a and 27b can be automatically lowered by the apparatus 100 (FIG. 4) to perform leveling work.
Thereby, it is possible to reliably level the headland or the vicinity of the headland which is likely to be rough in the field.

In the present embodiment, a control sensitivity change dial (not shown) provided near the seat 31 is adjusted in accordance with the hardness of the field, and the control sensitivity of the vertical position of the seedling planting portion 4 by expansion and contraction of the lifting hydraulic cylinder 46 is adjusted. Has a configuration that can be changed to multiple stages. Further, since the front / rear inclination angle of the center float 55 is detected by the float inclination angle detection sensor (elevating link switch (FIG. 3)) 94, the front / rear inclination angle of the center float 55 is set for each control sensitivity set value by the control sensitivity change dial. Are detected by the float inclination angle detection sensor 94, and the front and rear inclination angles (elevation angles) of the center float 55 are a plurality of different values so that they are on the front rising side when the field is hard and on the front lowering side when the field is soft. Each is set to an angle.
Therefore, the control device 100 causes the lifting / lowering hydraulic cylinder 46 to expand and contract so that the detection value of the float tilt angle detection sensor 94 becomes the tilt angle of the center float 55 set by the control sensitivity change dial. Control is performed so that the planting device 4 is in the set vertical position.

  At this time, if the field is hard, the control sensitivity of the elevating hydraulic cylinder 46 is set to the insensitive side by the control sensitivity change dial. In conjunction with this, the vertical position of the leveling rotors 27a and 27b is corrected to the upward side. Level the ground. On the contrary, if the field is soft, the control sensitivity of the elevating hydraulic cylinder 46 is set to the sensitive side by the control sensitivity change dial, and the vertical position of the leveling rotors 27a, 27b is corrected to the downward side in conjunction with this to level the ground. . Thereby, the difference in ground height of the leveling rotors 27a and 27b can be suppressed by the difference in the front and rear inclination angle (elevation angle) of the center float 55 due to the control sensitivity change. In addition, when the leveling rotors 27a and 27b enter deeply in a field where the soil is hard, it is possible to suppress a problem that the leveling rotors 27a and 27b have a large driving resistance, and it is possible to prevent damage to the transmission mechanism and a decrease in traveling speed. Thus, a stable leveling effect can be achieved in accordance with the hardness of the field.

  Further, by adjusting the inclination angle of the swash plate of the trunnion shaft of the hydrostatic continuously variable transmission (HST) 23, it is linked to a shift lever (not shown) that changes the output of the HST hydraulic motor (not shown). If the leveling rotors 27a and 27b are automatically moved to the storage position (upward position) by the rotor lifting / lowering motor 63, the leveling rotors 27a and 27b will not push mud and water in the field during high-speed travel. For this reason, it is possible to prevent the adjacent existing seedlings from being killed by the muddy water flow.

The seedling transplanter (rice transplanter) of the present embodiment has a configuration that can set a control mode (automatic planting start mode) in which the planting start position of the seedling after turning is automatically performed based on the rotational speed of the rear wheel 11. I have. In this control mode setting, the turning start timing is detected by the steering detection sensor 92 of the handle 34, and the travel distance from the start of turning detected by the steering detection sensor 92 is measured based on the number of revolutions of the rear wheel 11 inside the turn. This is an automatic planting start mode in which seedling planting is automatically started without operating a seedling planting lever (not shown) when the travel distance reaches a predetermined value.
During this automatic planting start mode operation, the ground leveling rotors 27a and 27b are floated so as not to be grounded, and the rear end portion of the rotor cover 37 is grounded so that the unevenness of the field is leveled slightly. It can be lifted and lowered.

  One of the pair of left and right rotor transmission shaft cases 73 is provided with a rotor transmission shaft inclination angle sensor 89 (FIG. 8) composed of a potentiometer or the like for detecting the inclination angle of the case 73 with respect to the horizontal plane. If the angle leveling rotor 27b detects an angle greater than (or less than) a predetermined angle at which the leveling rotor 27b does not go into the mud, the center leveling rotor 27b may be damaged by providing a notification member (buzzer or lamp) 91 that informs the operator. Can be prevented.

  FIG. 12A shows an internal structure diagram of the power transmission mechanism portion of the rotor transmission shaft 73a and the rotor drive shafts 70b and 70b in the rotor transmission shaft case 73, and FIG. 12B shows a square pipe-shaped rotor drive shaft. A sectional view taken along line AA of the end of 70b (the rotor drive shaft 70b is not shown), FIG. 12 (c) is a partially enlarged view in the circle C of FIG. 12 (b), and FIG. 12 (d). Sectional drawing of hub 70bc inserted in the edge part of the rotor drive shaft 70b is shown.

  A bevel gear 70ba that meshes with a bevel gear 73aa provided at the tip of the rotor transmission shaft 73a is joined to the end of the rotor drive shaft 70b, and a hub 70bb is inserted into the end of the rotor drive shaft 70b. Then, as shown in the sectional view of FIG. 12B, a recess 70bb1 for bead relief is provided on the surface of the hub 70bb to be inserted into the tip of the rotor drive shaft 70b, and a protrusion 70bc1 that fits into the recess 70bb1 of the hub 70bb is provided. A square pipe-shaped hub 70bc provided on the inner peripheral side is provided on the outer periphery of the tip of the rotor drive shaft 70b.

  An end portion of the plate member when the plate member is bent as the convex portion 70bc1 on the inner peripheral portion of the square pipe-shaped hub 70bc of the rotor drive shaft 70b and the ends are welded to each other to manufacture the hub 70bc. Use beads that are produced when welding each other.

  Conventionally, the outer dimension of the hub 70bb is generally reduced in order to escape the weld bead at the time of manufacturing the square pipe. In this case, the rotor transmission shaft 73a and the rotor drive shaft 70b in the rotor transmission shaft case 73 are used. There was a problem that the backlash became large when the power transmission mechanism part was assembled.

However, as described above, the recess 70bb1 for bead relief is provided on the surface of the hub 70bb, and the bead 70bc1 of the square pipe-shaped hub 70bc of the rotor drive shaft 70b is fitted into the recess 70bb1 of the hub 70bb, so that the whole is achieved. The outer dimension of the hub 70bb can be increased, the backlash at the time of mounting can be reduced, and the durability is improved as compared with the conventional product.
Further, since the uneven portion is provided, it becomes a guide rail when the rotor transmission shaft 73a and the rotor drive shaft 70b are assembled, so that the attachment becomes easy.

When the power transmission mechanism portion of the rotor transmission shaft 73a and the rotor drive shaft 70b in the rotor transmission shaft case 73 is assembled, the internal structure diagram of the power transmission mechanism portion of FIG. 13A and FIG. You may employ | adopt the structure shown to the AA arrow directional cross-sectional view of a).
In other words, the hub of the power transmission mechanism of the rotor drive shaft 70b is provided with a cylindrical hub 70bd made of a drawn pipe in which a hollow portion of an eight spinning star shape (a combination of a square and a rhombus) is formed. The end portion of the rotor drive shaft 70b may be inserted into the star-shaped hollow portion to hold the outer shape portion of the square pipe-shaped hub 70bb. In this case, the driving force can be reliably transmitted from the rotor transmission shaft 73a to the rotor driving shaft 70b.

Conventionally, the end of the quadrangular prism-shaped rotor drive shaft 70b is inserted and connected to the inside of the cylindrical hub. However, the end of the rotor drive shaft 70b and the cylindrical hub are connected to the rotor drive shaft 70b. Since the contact is made only at the four corners, the contact pressure is increased, the contact portion is likely to be worn by vibrations generated during rotation, and the replacement frequency of parts (hubs) is increased. Further, in this configuration, although the loss of power transmission is reduced, there is a problem that it is difficult to insert the hub since the circumferential diameter of the hub has to be a diameter that allows the end of the rotor drive shaft 70b to enter.
In addition, if the diameter of the hollow portion of the cylinder is made large in order to make it easy to insert the quadrangular column into the cylinder, the contact between the end of the rotor drive shaft 70b and the hub is loosened and the loss of power transmission increases. There was a problem.

On the other hand, as shown in FIG. 13, since the outer shape of the square pipe-shaped hub 70bb is maintained by the eight-spindle-shaped hollow portion of the hub 70bd, the square pipe-shaped hub 70bb is evenly distributed at the four rounded corners of the hub 70bb. Since the stress is applied, the durability is improved as compared with the inner diameter holding.
In addition, by using a drawing pipe having an eight-bore-shaped hollow portion as the hub 70bd, the cost can be reduced as compared with a conventional processed product.

About the fuel tank used with the seedling transplanter of a present Example, the following devices were devised.
The cap part of the combustion tank 47 as shown in the sectional view of the boss part 47a of the cap part of the combustion tank 47 shown in FIG. 14 (FIG. 14 (a)) and the partially enlarged view inside the ellipse C (FIG. 14 (b)). A groove 48a is provided in a boss portion of a filter 48 made of a polyethylene material or the like inserted into the boss portion 47a. Thus, since the boss portion of the filter 48 has a high coefficient of thermal expansion, it is difficult for the filter 48 to come off due to expansion during work, and the filter 48 attached to the tip of the hose when the oil supply hose is inserted when refueling the combustion tank 47. Can be prevented from coming off.
In addition, when a polyamide resin, which is a material having a high water absorption (liquid) rate, is used for the filter portion instead of the filter 48 made of the polyethylene material or the like, the filter 48 attached to the tip of the hose is detached by inserting the oil supply hose at the time of oil supply. It becomes difficult.

FIG. 15 is a cross-sectional view of the boss portion of the cap portion of the combustion tank 47 (FIG. 15A) and a partially enlarged view thereof (FIG. 15B). It is desirable that the threaded portion 47aa of the portion to which the cap is fitted is tapered.
The combustion tank 47 uses a blow-molded product made of polyethylene or the like, but polyethylene material or the like has a high coefficient of thermal expansion, so the threaded portion 47aa on the outer periphery of the cap is tapered to reduce the fitting portion on the side that expands during thermal expansion. Thus, the difficulty of removing the cap due to the coefficient of thermal expansion can be eliminated.

DESCRIPTION OF SYMBOLS 1 Riding type seedling transplanter with fertilizer application 2 Traveling vehicle body 3 Elevating link apparatus 4 Seedling planting part 10 Front wheel 11 Rear wheel 11a Rear wheel drive shaft 12 Mission case 13 Front wheel final case 15 Main frame 18 Rear wheel gear case 18a Transmission shaft 18b Universal joint 19 畦 Clutch lever 19a 畦 Clutch lever sensor 20 Engine 23 Hydrostatic continuously variable transmission (HST)
26 Planting transmission shaft
27 (27a, 27b) Leveling rotor 31 Seat 32 Front cover 34 Handle 35 Floor step 36 Rear step 37 Rotor cover 38 Spare seedling stage 40 Upper link 41 Lower link 42 Link base frame 43 Vertical link 44 Connecting shaft 46 Elevating hydraulic cylinder 47 Combustion tank 47a Boss portion 47aa Screw portion 48 Filter 48a Groove 50 Transmission case 51 Seedling stand 51a Seedling outlet 52 Seedling planting device 53 Blower electric motor 54 Seedling feed belt 55 Center float 56 Side float 58 Blower 59 Air chamber 60 Fertilizer hopper 61 Feeding part 62 Fertilization hose 63 Motor for raising and lowering rotor 64 Groove body 65 Seedling planting part support frame body 65a Support roller 65b Both side members 66 Beam member 67 Support arm 68 Rotor support frame 69 Rotor height adjustment Node lever 70 (70a, 70b) Rotor drive shaft 70ba, 73aa Bevel gear 70bb Hub 70bb1 Recess 70bc Square pipe-shaped hub 70bc1 Projection (bead)
70bd hub 70c bearings 70v, 72v bevel gear 71 connecting member 72 leveling transmission shaft 73 rotor transmission shaft case 73a rotor transmission shaft (square pipe)
74 Reinforcing member 74a Mounting piece
76 First link member 77 Second link member 78 Spring 80 Driven spur gear 81 Drive spur gear 82 Input shaft 83a Drive bevel gear 83b Driven bevel gear 84 Leveling drive motor 85 Output shaft 85a Covering boot 87 Rotor drive case 89 Rotor drive shaft case tilt angle sensor 91 Notification member (buzzer or lamp)
92 Handle turning (steering detection) sensor 93 Vehicle speed sensor 94 Float inclination angle detection sensor (elevating link switch)
97 Clutch shifter 99 Clutch cable 100 Control device

Claims (5)

An engine (20), a traveling vehicle body (2) that travels in the field with the driving force of the engine (20), and a steering member (34) mounted on the traveling vehicle body (2) to steer the traveling vehicle body (2) A seedling planting part (4) for planting seedlings in the field at the rear of the traveling vehicle body (2), and left and right leveling rotating bodies (27a, 27b) for leveling the farm scene at the lower part of the seedling planting part (4) In the seedling transplanter provided with left and right transmission cases (18, 18) for supplying the driving force of the engine (20) to the rear wheels (11, 11) of the traveling vehicle body (2),
Left and right rotor transmission shafts (72, 72) for independently supplying driving force from the left and right transmission cases (18, 18) to the left and right ground leveling rotary bodies (27a, 27a) are provided,
A power transmission mechanism in which when the traveling vehicle body (2) is turned by operating the steering member (34), the inner rotor drive shaft (70b) rotates at a lower speed than the outer rotor drive shaft (70b). A seedling transplanter characterized by that. An engine (20), a traveling vehicle body (2) that travels in the field with the driving force of the engine (20), and a steering member (34) mounted on the traveling vehicle body (2) to steer the traveling vehicle body (2) A seedling planting part (4) for planting seedlings in the field at the rear of the traveling vehicle body (2), and left and right leveling rotating bodies (27a, 27b) for leveling the farm scene at the lower part of the seedling planting part (4) In the seedling transplanter provided with left and right transmission cases (18, 18) for supplying the driving force of the engine (20) to the rear wheels (11, 11) of the traveling vehicle body (2),
Left and right rotor transmission shafts (72, 72) for independently supplying driving forces to the left and right leveling rotary bodies (27a, 27b) from the left and right transmission cases (18, 18),
A steering detection device (92) for detecting the steering direction by the steering member (34) is provided,
A seedling transplanter characterized in that the leveling rotator (27a) inside the turning detected by the steering detection device (92) is a power transmission mechanism that rotates at a lower speed than the leveling rotator (27a) outside the turning. A pair of central leveling rotators (27b, 27b) arranged in parallel on the left and right between the left and right leveling rotators (27a, 27a);
A second transmission case (73, 73) having left and right second transmission shafts (73a, 73a) for transmitting a driving force from the left and right leveling rotary bodies (27a, 27a) on both left and right sides of the pair of central leveling rotary bodies (27b, 27b). 73)
The seedling transplanting machine according to claim 1 or 2, wherein the seedling transplanting machine is provided. A float (55, 56) for detecting the vertical position of the seedling planting part (4) is arranged below the seedling planting part (4) and behind the leveling rotator (27a, 27b),
A pair of left and right float support members (seedling planting support members) (65) that support the float (55, 56) and a pair of left and right leveling rotator support members (68, 68) that support the leveling rotator (27a, 27b). 68) is provided in the seedling planting part (4),
A pair of long holes (71a) in the front-rear direction for allowing the front-rear position of the leveling rotator (27a, 27a) to be adjusted by sliding the leveling rotator support member (68, 68) in the front-rear direction. 4. The seedling transplanter according to claim 1, wherein the connecting members (71, 71) are provided on a float supporting member (seedling planting part supporting member) (65). An inclination angle detection member (89) for detecting an inclination angle is provided on either the left or right side of the pair of left and right second transmission cases (73, 73) each having a second transmission shaft (73a, 73a),
When the angle detection member (89) detects an angle greater than or less than the set angle, a notification member (91) that informs the operator
The seedling transplanter according to claim 3 or 4, wherein the seedling transplanter is provided.

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