JP3423451B2 - Rice transplanter - Google Patents

Description

Description: BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention runs a seedling planting apparatus which cuts out a seedling placed on a seedling placing stand by a planting mechanism and performs planting on a field. More specifically, the present invention relates to a technique for reducing the size of a seedling planting device in a lateral direction during non-working time. 2. Description of the Related Art Japanese Patent Laid-Open No. 4-113523 discloses a technique for reducing the lateral dimension of a seedling planting apparatus as described above. By arranging the both ends to be freely foldable, the size of the seedling table in the lateral direction can be reduced by a folding operation of both ends of the seedling table when not working. [0003] Since the size of the seedling planting device of the riding type rice transplanter is large in the lateral direction, the purpose is to avoid contact with obstacles when traveling on the road, or to use the rice transplanter on a truck. In order to keep the load within the width of the carrier when loading and transporting it, a rice transplanter such as a conventional example may be conceived so as to reduce the size in the horizontal direction in a multi-row seedling planting apparatus such as eight-row planting. I was However, in the configuration of this conventional example, since only the both sides of the seedling mounting table are folded, for example, when storing a seedling planting apparatus for multi-row planting of 10 or more rows, the size in the horizontal direction is reduced. There was room for improvement because it could not be too small. [0004] Therefore, the whole seedling planting apparatus is configured to be freely divided into two parts left and right, and the lateral direction of the seedling planting apparatus is changed to a posture facing the front-rear direction by rotating around a suitable axis in a vertical posture. Also, it is conceivable to reduce the lateral dimension of the seedling planting device at the time of storage by moving the divided material to the center side of the body in the left-right direction, but in this way around a large number of axes. In the case where the rotation is required, it takes time and effort to rotate around each axis. In addition, even if the seedling planting apparatus is configured to be divided into two parts as described above and stored by rotation, it is important that the position of the center of gravity of the seedling planting apparatus be moved toward the machine side to stabilize the posture of the entire rice planting machine. There is a demand for a technique for stabilizing the posture even when the seedling planting device is stored. SUMMARY OF THE INVENTION It is an object of the present invention to store a seedling plant in a posture in which the size in the lateral direction is reduced by rotating the planting device into two parts without any trouble, and to stabilize the posture of the body in the stored state. The reason is that the rice transplanter that can be made is constructed rationally. SUMMARY OF THE INVENTION As described at the outset, a feature of the present invention is that a seedling planting apparatus for planting seedlings on a seedling mounting table in a field by a planting mechanism is moved up and down to the rear end of a traveling machine body. In the rice transplanter that is freely connected, the seedling planting device is configured to be able to be divided at an intermediate position in the left-right direction, and each divided material is rotated around a first vertical axis relative to the frame member. The frame member is freely supported, the frame member is rotatably supported on a member on the traveling body side around a second vertical axis, and the divided member is rotated by rotating the frame member around the second axis. In conjunction with the operation of moving to the center position side in the left-right direction, a rotation operation is performed in which the lateral outer end of the divided object is directed to the front side of the traveling body by rotation around the first axis. A fixed body disposed coaxially with the second axis so as to be rotated together with the divided body around the first axis. The second embodiment is characterized in that a cable body is provided between the vehicle body and the posture of the second axis is set to an inclined posture whose upper end is directed forward of the traveling body. It is as follows. According to the above-mentioned feature, for example, when the seedling plant is retracted, when the frame member is rotated around the second axis toward the center position in the left-right direction of the traveling machine body, the fixed body is rotated. With the tension of the cord provided between the rotating body and the rotating body, the rotating movement of the laterally outer end of the divided object toward the front side of the traveling body around the first axis is performed in conjunction with the rotating. When the storage position is reached, the lateral dimension of the seedling planting device is reduced. This configuration allows the frame member to rotate in conjunction with the rotation of the divided object when a turning force is applied to the side of the divided object. Further, since the posture of the second axis is inclined, when the seedling planting device is set to the retracted posture, the rear end side (rear side of the traveling machine) in the retracted posture is displaced upward, so that the seedling is displaced upward. The center of gravity of the entire planting device moves toward the traveling machine. That is, in the present invention, since the frame member and the divided object are linked with each other by the rope, it is possible to securely store it while being smaller and lighter than those using a gear or a link mechanism, and to achieve the shaft center posture. Only by setting, the center of gravity of the seedling planting device in the storage posture can be shifted toward the traveling machine body. [0009] Therefore, the storage of the seedling planting apparatus in a posture in which the lateral dimension of the seedling planting apparatus is reduced can be performed efficiently without any trouble, and the seedling planting apparatus is stored when the seedling planting apparatus is stored. Thus, a rice transplanter capable of stabilizing the attitude of the aircraft by shifting the center of gravity toward the traveling aircraft is configured. In particular, according to the present invention, the rear end of the seedling planting device is lifted upward when the seedling planting device is stored, so that the seedling planting device is hardly brought into contact with the ground during traveling. Embodiments of the present invention will be described below with reference to the drawings. As shown in FIG. 1, an engine 4 is mounted on a front part of a traveling body 3 provided with a driving type front wheel 1 and a driving type rear wheel 2 which are operated by a steering operation. Transmission 5 to which power from the engine 4 is transmitted, and a transmission case 6, a driving seat 7 is disposed at the center of the traveling body 3, and hydraulic pressure is applied to the rear end of the traveling body 3. A seedling planting apparatus A is connected via a link mechanism 9 driven up and down by a cylinder 8 to form a riding type rice transplanter. The right side of the driver's seat 7 is provided with a raising / lowering lever 10 for controlling the raising and lowering of the seedling planting device A and the on / off operation of the planting clutch C. The left side of the driver's seat 7 has the continuously variable transmission. A shift lever 11 for operating the device 5 is provided.
The planting clutch C is built in the transmission case 6 and permits the disengagement operation only when the transmission shaft 12 for transmitting power from the transmission case 6 to the seedling planting device A is in a predetermined rotation phase. Then, the planting arm (described later) of the seedling planting apparatus A is configured to stop in a posture avoiding contact with the field. The seedling planting apparatus A places the mat-shaped seedlings W thereon, and the seedling mounting table 13 has an upper end side inclined toward the front side of the traveling machine body 3, and the right and left to which power from the transmission shaft 12 is transmitted. A pair of transmission cases 14, 14, this transmission case 1
The rotary case 16 is rotated by the power transmitted from the wheel case 4 via the chain case 15, the planting arms 17 provided in pairs on the rotary case 16, and the plurality of leveling floats 18, each of which is configured for eight-row planting. In addition, a fertilizer applicator 19 having a hopper, a feeding mechanism, a groove producing device, and the like is provided. At the same time as the planting in the field scene, the fertilizer 19 supplies fertilizer to the field scene near the planted seedlings. In addition, the rotary case 1
The planting mechanism is composed of the planting arm 6, and a system for driving these. As shown in FIGS. 2, 3 and 6, this rice transplanter is configured so that it can be divided into two parts, four at the center of the seedling planting device A in the left-right direction. AL, A
R is a frame member 2 constituting the divided parts AL and AR
0, and is rotatably supported around a first axis X1 in a vertical position, and further, the frame member 20 is held in a vertical position with respect to a main frame 21 provided at a rear end of the link mechanism 9. As shown in FIG. 8, in a state where the seedling planting device A is set in the working posture, the first shaft center X1 is rotatably supported around the second shaft center X2. , Second
The upper end side of each of the shaft cores X2 is inclined in a direction toward the front side of the traveling body 3. A connecting plate 23 is supported by a rolling boss 22 connected to the lower end of a vertical frame 9A supporting the rear end of the link mechanism 9 so as to freely roll around a rolling axis Y in a front-rear direction. 23, the main frame 21 composed of an upper plate 21A and a lower pipe 21B is fixedly mounted on the main frame 2A.
The frame member 20 in the form of a round pipe is fixedly mounted at both left and right end portions of a boss member 20A rotatably fitted to a second shaft 24 disposed coaxially with the second shaft core X2. The frame member 20 is rotatably supported around the second axis X2,
In addition, the first ends of the respective frame members 20
A rectangular pipe-shaped support frame 27 is rotatably supported around the first axis X1 via a channel-shaped bracket 26 with respect to a first axis 25 disposed coaxially with the axis X1. 27 and the left and right transmission cases 1
4 and the chain case 15 is fixed, and a pair of chain cases 15
The left and right sliding rails 28, 28 for supporting the seedling mounting table 13 are provided on the upper surface of the base. A screw shaft 29 which is driven to rotate by the power of the left transmission case 14 is provided between the transmission case 14 and the bearing member 30 at the end of the support frame 27 on this side. A moving member 31 for transmitting the moving force of a frame (not shown) engaged with the spiral groove of the screw shaft 29 to the left divided seedling mounting table 13L is provided to constitute a lateral feed mechanism of the seedling mounting table 13. The seedling mounting table 13 is divided into left and right divided seedling mounting tables 13.
L and 13R are connected by a connecting member D (see FIGS. 9 and 10), so that the power from the traverse mechanism reciprocates integrally on the slide rails 28 and 28 in the horizontal direction. A shaft (not shown) to which power from the transmission shaft 12 is transmitted to the rolling boss 22 is freely rotatably supported on the rolling shaft center Y and the coaxial center.
As shown in (a) and (b), the power of this shaft is transferred to a bevel case 32 and a pair of output shafts 3 provided in the bevel case 32.
3, 33, a transmission mechanism for transmitting to the left and right transmission cases 14 and 14 via the clutch mechanism 34 and the intermediate shaft 35, respectively. The clutch mechanism 34 includes a clutch shaft portion 34A formed in a spline shape at the end of the intermediate shaft 35, a shift member 34B fitted to the output shaft 33 so as to be detachable from the clutch shaft portion 34A and slidably movable on the output shaft 33, This shift member 34
And a spring 34C for urging B toward the clutch shaft 34A. In the clutch mechanism 34, the clutch shaft portion 34A and the shift member 34B are engaged only in a specific rotation phase during the on operation, and as shown in FIG. By the separation from 34B,
The intermediate shaft 35 and the output shaft 33 of the bevel case 32 are configured to be completely separated. The bevel case 32 is provided with a power transmission system having a bevel gear (not shown) so that the power from the traveling machine body is branched and output to two output shafts 33, 33. It is supported to maintain a lateral orientation with respect to the system, and is configured with a universal joint in the bending portion. FIGS. 5A, 5B, 6 and 7
As shown in (a) and (b), the second shaft 24 is provided so as not to rotate with respect to the main frame 21, and the first shaft 25 is provided so as not to rotate with respect to the frame member 20. At the upper position of the second shaft 24, a main sprocket 36 as a fixed body is fixedly mounted on the second shaft center X2 and coaxially, and at the upper end position of the second shaft 24, it is rotatable around the second shaft center X2. Plate-shaped rotating member 3
7 is provided. Further, the bracket 26 is supported rotatably with respect to the first shaft 25, and the bracket 2
6 and a driven sprocket 38 as a rotating body having half the number of teeth of the main sprocket 36
Are arranged coaxially with the first shaft X1 and the main sprocket 36
A chain 39 as a cable body is wound around and the driven sprocket 38. The left and right rotating members 37, 37 are arranged at a higher level than the left and right frame members 20, 20, respectively.
The frame members 20, 20 are connected and fixed via the rods 40, 40 in a suspended posture so as to rotate in conjunction with the rotational power of the frame members 20, and the left and right rotating members 37, 37 are rotated in opposite directions. , A pair of wires 4 in a crossed posture between each
4,44 are stretched. Further, a sector gear 41 arranged coaxially with the second shaft core X2 on the left side is fixed to the frame member 20 side, and a pinion gear 42 that meshes with the sector gear 41 is provided on the main frame 21 side. An electric motor 43 for driving is provided. The rod 40 is provided with a turnbuckle 40A at an intermediate portion, and one end portion is provided with a rotating member 37.
And the other end is screw-connected via a support member 45 fixed to the frame member 20, and the rod 40 is linearly inclined with the rotating member 37 and the frame member 20. In this case, the frame member 20 is suspended from the rotating member 37 to improve strength. In addition, a length adjusting section 44A for adjusting the length in a screw type is provided at an intermediate portion of the wire 44. With such a configuration, when the seedling planting device A is stored, the seedling planting device A is first raised to a level separated from the ground, and as shown in FIG. The driving force moves the seedling mounting table 13 to the left end position and stops. Next, the connection of the connecting member D is released, and the right divided seedling mounting table 13R is artificially moved to the right moving end. The movement of the divided seedling mounting table 13R on the slide rail 28 is prevented by a locking means (not shown) (in this state, FIG.
0, and the distance between the left and right divided seedling mounts 13R and 13L reaches about 30 cm). Next, the clutch mechanism 33 is artificially separated, and the electric motor 43 is driven by a predetermined operation.
The respective frame members 20, 20 are interlocked by the forces from the left and right rotating members 37, 37 and the pair of wires 44, 44, around the second shaft cores X2, X2, with their outer ends toward the rear side. Rotates, and simultaneously with this rotation, the first axis X
The system supported by the brackets 26 around the X1 and X1 causes the frame members 20 and 20 to rotate at twice the rotation speed of the frame members 20 and 20 by the force from the main sprocket 36, the driven sprocket 38, and the chain 39. The left and right outer ends rotate in a direction opposite to the rotation direction, that is, toward the front of the traveling body 3. As shown in FIG. 11, at the time of rotation to the storage position, the upper corners 13E and 13E of the left and right divided seedling mounts 13L and 13R approach, but the divided seedling mounts are viewed in plan. 13L and 13R rotate at positions separated from each other, so that rotation can be avoided while avoiding contact with the respective corners 13E and 13E. In addition, separation of the clutch mechanism 33 and expansion and contraction of the intermediate shaft 35 can be performed. This rotation is allowed. When the divided objects AL and AR reach the storage position, the driving of the electric motor 43 is stopped (the control operation is not described in detail), and the storage is completed. In this state, as shown in FIG. 12, the left and right divided seedling mounts 13L and 13R are located on the slide rails 28 and 28 at positions close to the traveling machine body 3 and the upper ends thereof are parallel to each other. , The weight of the entire seedling planting device A is shifted toward the traveling machine body 3 to improve the weight balance of the entire rice planting machine A, and the seedling planting device A
Is reduced in the lateral direction. Further, in the retracted position, the divided seedling mounts 13L and 13R are switched to the standing position as shown in FIG. 13 by the rotation about the first axis X1 in the inclined position as described above. The lateral dimensions of the seedling planting apparatus A are further reduced, and as shown in FIG. 14, the divided parts AL and AR are rotated by the rotation of the frame member 20 around the second axis X2 in the inclined posture as described above. As a result of lifting the rear side of the traveling machine body 3 upward, it is possible to reduce the dimension in the front-rear direction in plan view, and to further move the center of gravity of the whole rice transplanter forward to improve the weight balance and Sometimes, the rear end of the seedling planting device A in the retracted posture is not brought into contact with the ground. When the seedling planting apparatus A in the retracted position is restored to the working position, the electric motor 43 is rotated in the reverse direction so that the divided parts AL and AR rotate in the opposite direction. Is the seedling planting device A in the retracted posture by the reverse operation.
Is changed to the working posture, and when the seedling placement apparatus A reaches the posture shown in FIG. 10 by this posture change, the drive of the electric motor 43 is stopped (control operation is not described in detail), and the clutch mechanism 33 is moved. Are connected to each other, and the right divided seedling placing table 13R is moved toward the left divided seedling placing table 13L and the respective connecting members 13L and 13R are connected to each other by the connecting member D, thereby achieving a workable state. [Alternative Embodiment] The present invention is not limited to the above-described embodiment.
For example, as shown in FIGS. 15 (a) and (b), a main pulley 36 as a fixed body is fixedly provided at a position coaxial with the second axis X2, and the bracket 26 is provided at a position coaxial with the first axis X2. The driven pulley 3 that rotates integrally and has a radius of １ ／ of the main pulley 36
By disposing the wire 8 as a rotatable body and stretching the wire 39 as a rope body to the respective pulleys 36, 38 in a state of being fixed at the connection points P, P, P, the second member of the frame member 20 is extended.
At the time of rotation around the axis X2, it is also possible to configure so that the divided objects AL and AR can be rotated around the first axes X1 and X1 via the wire 39 and set to the retracted posture. still,
In this alternative embodiment, since the wire 39 is provided in a wound state, the operation of restoring the seedling placement apparatus A in the storage position to the working position is also performed by the tension of the wire 39. Further, according to the present invention, the cord can be constituted by a push-pull wire, and the posture of the second axis can be adjusted artificially. Also, 10
It is also possible to apply to a seedling planting device more than a row planting. Incidentally, reference numerals are written in the claims for convenience of comparison with the drawings, but the present invention is not limited to the configuration of the attached drawings by the entry.

BRIEF DESCRIPTION OF THE DRAWINGS FIG. 1 is an overall side view of a rice transplanter. FIG. 2 is a plan view of a transmission system of a seedling planting apparatus. FIG. 3 is a plan view of a transmission system of a seedling planting apparatus in a retracted posture. 4) (a) is a rear view of the clutch mechanism in the engaged state (b) is a rear view of the clutch mechanism in the disengaged state [FIG. 5] (a) is a plan view of the storage operation system in the working posture (b) is FIG. 6 is a rear view of the main frame and the frame member partially cut away. FIG. 7A is a plan view of the rotating operation system in the working posture, and FIG. FIG. 8 is a side view showing the posture of the first axis and the second axis. FIG. 9 is a view of the rice transplanter in a state where the seedling mounting table is positioned at the end of the slide rail. Plan view [FIG. 10] Plan view of rice transplanter with seedling mounting table divided [FIG. 11] Plan view of rice transplanter with seedling planting apparatus divided and turned [FIG. 12] FIG. 13 is a rear view of the seedling planting device in the stowed state. FIG. 14 is a side view of the seedling planting device in the stowed state. FIG. The plan view (b) in the working posture of the turning operation system of the example is a plan view in the storage posture of the turning operation system of another embodiment. [Description of References] 3 Traveling body 13 Seedling rest 20 Frame member 36 Fixed body 38 Rotating body 39 Cord body A seedling planting apparatus AL, AR Split W W Seedling X1 First axis X2 Second axis

Claims (1)

(57) [Claims] [Claim 1] Seedlings (W) placed on a seedling placing stand (13)
A seedling planting device (A) that cuts out the seedlings by a planting mechanism and performs an operation of planting the seedlings in a field, the rice planting machine being connected to the rear end of the traveling machine body (3) so as to be able to move up and down, and the seedling planting device ( A) is configured to be dividable at an intermediate position in the left-right direction, and each of the divided parts (AL), (AR) is vertically oriented with respect to the frame members (20), (20).
The shaft members (X1) and (X1) are supported rotatably around the shaft cores (X1) and (X1), and the frame members (20) and (20) are vertically
2) and (X2) are rotatably supported by members on the traveling body side, and are rotated by the frame members (20) and (20) around the second axis (X2) and (X2). Division (AL),
(AR) in conjunction with the operation of moving the traveling body (3) to the center position side in the left-right direction of the traveling body (3), the first axes (X1), (X
1) The second axis (X2) is rotated so as to rotate the outer ends of the divided parts (AL) and (AR) in the lateral direction toward the front side of the traveling body (3) by rotating around the periphery. ), (X2) and a fixed body (36), (36) arranged coaxially with the first axis (X1), (X1) around the first axis (X1) with the divided parts (AL), (AR). Cable bodies (39), (39) are provided between the moving bodies (38), (38), and the second shaft center (X
2) A rice transplanter in which the posture of (X2) is set to an inclined posture whose upper end is directed forward of the traveling body (3).