JP3499308B2 - Rice transplanter - Google Patents

Description

Description: BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention travels a seedling planting apparatus which operates to cut out a seedling placed on a seedling placing stand by a planting mechanism and plant it on a field. More specifically, the present invention relates to a technique for reducing the lateral dimension of a seedling planting device when not in operation. 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 configuring the both ends to be freely foldable, it is possible to reduce the size of the seedling mounting table in the lateral direction by folding the both ends of the seedling mounting table when not in operation. [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. A conventional rice transplanter may be conceived to reduce the size in the horizontal direction in a multi-row seedling planting apparatus such as eight-row planting for the purpose of keeping it within the lateral width of the carrier when loading and transporting. 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. An object of the present invention is to rationally configure a rice transplanter capable of storing the dimensions in the lateral direction and in the longitudinal direction as small as possible even in a seedling planting apparatus for multiple planting. As described at the beginning, 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, which is freely connected, the seedling planting device is configured to be splittable at an intermediate position in the left-right direction, and each of the splits is rotated around a first vertical axis with respect to the frame member. The frame member is freely supported, and the frame member is rotatably supported on a member on the traveling body side around the second vertical axis, so that the divided member can be rotated around the first axis to move the divided member in the lateral direction. The end is directed toward the front side of the traveling machine body, and the divided material is moved to the center position side in the left-right direction of the traveling machine body by the rotation of the frame member around the second axis, and the upper end of each divided seedling mounting table Edges are configured to be switchable to a storage posture that is parallel in a close state, and the posture of the second axis is The upper end thereof is set in an inclined posture toward the front side of the traveling body, and its operation and effect are as follows. According to the first feature, when the seedling planting device is stored, the divided planting device is rotated around the first axis with respect to the frame member in a state where the seedling planting device is divided. Let me
By rotating the frame member about the second axis, the outer end of the divided object is directed to the front side of the traveling body, and each divided object is positioned at the center position side in the left-right direction of the traveling body. In order to reduce the size of the seedling planting apparatus in the lateral direction, the upper edges of the divided seedling mounting tables are stored in a parallel position in a close state. At the same time when the pivot end moves toward the rear of the
Since the rear end of the frame member is displaced upward due to the inclination of the axis of the axis, the rear end side (rear side of the traveling body) of the divided product in the retracted posture is lifted upward, and is viewed in plan. As a result, the dimension in the front-rear direction is further reduced. [0007] Therefore, even in a seedling planting apparatus for multi-row planting, a rice transplanter capable of storing a small size in the lateral direction and in the front-rear direction is rationally constructed. In particular, to allow a reduction in the longitudinal dimension by changing the axial position which allows the storage of seedling planting device, without requiring a dedicated configuration for reducing the longitudinal length, with a simple structure This has the effect of ending. Further, in the present invention, the position of the center of gravity is displaced to the traveling body side by the lifting of the rear end side of the seedling planting apparatus in the storage posture, so that the body can be stabilized during traveling.
By raising the rear end side of the seedling planting device in the retracted posture, even when the front end side of the traveling machine body is inclined to the lifting position during traveling, there is also an effect that the rear end side of the seedling planting device is hard to contact the ground. 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 steering. Transmission 5 to which power from the engine 4 is transmitted, and a transmission case 6, and a driving seat 7 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 constitute 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 apparatus A and the on / off operation of the planting clutch C. The continuously variable transmission is provided on the left side of the driver's seat 7. 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 that transmits 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 placement apparatus A places a mat-shaped seedling W thereon, and the seedling mounting table 13 has an upper end inclined toward the front 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 14
A rotary case 16, which is rotated by power transmitted from the vehicle through a chain case 15, a pair of planting arms 17 provided on the rotary case 16, and a plurality of leveling floats 18, each of which is configured for eight-row planting. , A feeding mechanism, a fertilizer applicator 19 having a groove generator, etc., and a mat-shaped seedling W placed on a seedling mounting table 13 during operation.
At the same time, the planting arm 17 cuts out the seedlings one by one from the lower end of the seedlings and plants the seedlings in the field scene. 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 sections at a central position in the left-right direction of the seedling-planting device A. AL, A
R is a frame member 2 constituting the divided parts AL and AR
0, and is rotatably supported around the 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 the rear end of the link mechanism 9. The first shaft center X1 is rotatably supported around the second shaft center X2, and, as shown in FIG. 7, in a state where the seedling planting apparatus A is set in the working posture, the first shaft center X1 is set on the basis of the vertical direction. , 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. The link mechanism 9 comprises a top link 9T disposed at an upper portion and a lower link 9L disposed at a lower portion. The link mechanism 9 is connected to a rolling boss 22 connected to a lower end portion of a vertical frame 9A which supports a rear end of each. The connecting plate 23 can be freely rolled around the rolling axis Y in the front-rear direction.
The main frame 21 comprising an upper plate 21A and a lower pipe 21B with respect to the connecting plate 23.
And a round pipe shape for a boss member 20A rotatably fitted on a second shaft 24 disposed coaxially with the second shaft core X2 at both left and right ends of the main frame 21. The frame member 20 is fixedly mounted to rotatably support the frame member 20 around the second axis X2, and the outer ends of the respective frame members 20, 20 are coaxial with the first axis X1. The support frame 27 in the shape of a square pipe is mounted on the first shaft 25 via a channel-shaped bracket 26 with respect to the first shaft 25 disposed in the first shaft 25.
The support frame 2 is rotatably supported around the axis X1.
7, the right and left transmission cases 14 and the chain case 15 are fixed, and the seedling rest 13 is supported on the upper surfaces of the pair of chain cases 15 and 15 of the divided parts AL and AR. Left and right sliding rails 28, 28 are provided. 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, and a lateral feed mechanism of the seedling mounting table 13 is configured. The seedling mounting table 13 is divided into left and right divided seedling mounting tables 13.
The L and 13R are connected by the connecting member D (see FIGS. 8 and 9), so that the power from the traverse mechanism reciprocates integrally on the slide rails 28 in the horizontal direction. A shaft (not shown) to which the 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 clutch mechanism 34, and an intermediate shaft 35 to form a transmission system for transmitting to the left and right transmission cases 14, 14. 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 detachably engaged with the clutch shaft portion 34A, and a shift member 34B. This shift member 34
And a spring 34C for urging B toward the clutch shaft 34A. In the clutch mechanism 34, the clutch shaft 34A and the shift member 34B are engaged only in a specific rotational 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 transmission system having a bevel gear (not shown) so as to branch and output the power from the traveling body to two output shafts 33, 33. It is supported to maintain a lateral position with respect to the system and is configured with a universal joint. As shown in FIGS. 5A, 5B, and 6,
The second shaft 24 is provided so as not to rotate with respect to the main frame 21,
The first shaft 25 is non-rotatably provided on the frame member 20. The main sprocket 36 is fixedly mounted on the second shaft 24 at the upper position of the second shaft 24 and coaxial with the second shaft X2. At the upper end of the second shaft 24, a plate-like turn is rotatable around the second shaft X2. A moving member 37 is provided. Further, the bracket 26 is supported rotatably with respect to the first shaft 25, and the driven sprocket 38 which rotates integrally with the bracket 26 and has half the number of teeth of the main sprocket 36 is provided. A chain 39 is wound around the main sprocket 36 and the driven sprocket 38 while being arranged coaxially with the first shaft core X1. 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 disposed 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 of 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 connected to the rotating member 37 and the frame member 20 in an inclined posture. In this manner, the frame member 20 is suspended from the rotating member 37 so as to improve strength. Further, a length adjusting section 44A for adjusting the length in a screw type is provided at an intermediate portion of the wire 44. When the seedling planting apparatus A is stored in such a configuration, first, as shown in FIG. 8, the seedling planting apparatus A is raised to a level away from the ground, and as shown in FIG. The driving force moves the seedling mounting table 13 to the left end position and stops, then disconnects the connecting member D and artificially moves the right divided seedling mounting table 13R to the right moving end. Movement of the divided seedling mounting table 13R on the slide rail 28 is prevented by a lock means (not shown) (in this state, FIG.
, 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 force from the left and right rotating members 37, 37, and the pair of wires 44, 44, around the second shaft cores X2, X2, with the outer ends thereof toward the rear side. Rotates, and simultaneously with this rotation, the first shaft X
The system supported by the brackets 26, 26 around the axis X1, X1 causes the main sprocket 36, the driven sprocket 38, and the chain 39 to rotate the frame members 20, 20 at a speed twice as fast as the rotational speed of the frame members 20, 20. 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. 10, the upper and lower corners 13E and 13E of the left and right divided seedling mounts 13L and 13R move closer to the retracted posture, but the divided seedling mounts in plan view. 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. Also, 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 (control operation is not described in detail), and the storage is completed. In this state, as shown in FIG. 11, 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 their upper edges are parallel to each other. , The weight of the entire seedling planting device A is shifted to the side of 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. 12 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 the divided members AL and AR are rotated by rotating the frame member 20 around the second axis X2 in the inclined posture as described above, as shown in FIG. As a result of raising the rear side of the traveling machine body 3 upward, it is possible to reduce the size in the front-rear direction in plan view, and furthermore, to move the center of gravity of the whole rice transplanter further forward to improve the weight balance and Sometimes, the rear end of the seedling planting apparatus 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 planting device A reaches the posture shown in FIG.
3 is stopped (the control operation is not described in detail), the clutch mechanism 33 is connected, the right divided seedling mounting table 13R is moved toward the left divided seedling mounting table 13L, and 13L and 13R are connected to each other. By connecting with D, the workable state is reached. [Another Embodiment] In addition to the above embodiment, the present invention can be configured so that, for example, the posture of the second axis can be freely changed, and the storing operation of the seedling planting apparatus is performed manually. It can be configured, and can also be applied to a seedling planting apparatus having 10 or more rows. In the present invention, as shown in FIG. 14, crank members 52 are fixed to both left and right ends of a support shaft 51 which is rotatably provided in a lateral position with respect to a rear end frame 50 of the traveling body 3. A hydraulic cylinder 53 is provided at one end of the crank member 52, and the hydraulic cylinder 53 is connected to the other end between the lower link 9L of the link mechanism 9 and the frame at the rear end of the traveling machine body. When the conversion mechanism G is configured and the seedling planting device A is stored by the same operation as in the above-described embodiment, the operation of the hydraulic cylinder 53 causes the entire pair of lower links 9L to be displaced rearward, thereby causing the seedling planting device A to move backward. It is also possible to configure so that the rear end side of A (rear side of the traveling body) can be displaced upward (those having the same functions as those of the above embodiment are denoted by the same reference numerals and symbols as those of the embodiment). Further, according to the present invention, the link mechanism 9 and the seedling planting apparatus A are swingably connected to each other around the axis in a lateral posture,
An attitude conversion mechanism can be provided with an actuator such as a hydraulic cylinder so as to change the attitude of the seedling planting device A around this axis, and the attitude conversion mechanism is a link having an unequal-sided quadrilateral. It is also possible to configure with a combination of a mechanism and an actuator. In the claims, reference numerals are provided for convenience of comparison with the drawings, but the present invention is not limited to the configuration shown in the attached drawings.

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 device in a working posture. FIG. 3 is a transmission system of a seedling planting device in a storage 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 means in the working posture (b) Fig. 6 is a plan view of the storage means in the storage posture. Fig. 6 is a rear view of the main frame and the frame member with a partial cutaway. Fig. 7 is a side view showing the posture of the first shaft center and the second shaft center. FIG. 9 is a plan view of the rice transplanter with the stand positioned at the end of the slide rail. FIG. 9 is a plan view of the rice transplanter with the seedling mount divided. FIG. 11 is a plan view of the rice transplanter in which the seedling planting apparatus is set to the storage posture. FIG. 12 is a rear view of the seedling planting apparatus in the storage state. FIG. 13 is a storage state. FIG. 14 is a side view of the seedling planting apparatus in a storage state according to another embodiment [Description of reference numerals] 3 Traveling body 13 Seedling rest 13L, 13R Divided seedling rest 20 Frame member A seedling planting apparatus AL, AR divided object G posture conversion mechanism X1 first axis X2 second axis W seedling

──────────────────────────────────────────────────続 き Continued on the front page (72) Inventor Yasuhide Minamikawa 64 Ishizukitamachi, Sakai City, Osaka Prefecture Inside Kubota Sakai Works (72) Inventor Takeo Kubota 64 Ishizukitamachi, Sakai City, Osaka Prefecture Kubota Sakai Co., Ltd. Inside the factory (72) Inventor Hiroaki Kitai 64 Ishizu-Kitacho, Sakai City, Osaka Prefecture Inside Kubota Sakai Factory (72) Inventor Kenichi Murata 64, Ishizu-Kitamachi, Sakai City, Osaka Prefecture Inside Kubota Sakai Factory (56) References JP-A-53-2220 (JP, A) JP-A-5-70208 (JP, U) (58) Fields investigated (Int. Cl. ⁷ , DB name) A01C 11/02 A01B 73/06

Claims (1)

(57) [Claims] [Claim 1] Seedling (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 on a field, wherein the seedling planting device (A) is connected to the rear end of the traveling machine body (3) so as to be able to move up and down. 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 frame members (20), (20) are rotatably supported around the axis cores (X1), (X1), and rotatably run around the vertical second axis cores (X2), (X2). By being supported by the members on the fuselage side, the lateral outer ends of the divided parts (AL) and (AR) are rotated by the rotation around the first axes (X1) and (X1). Toward the front side, and the second axis (X
2), frame members (20), (2) around (X2)
The rotation of (0) moves the divided objects (AL) and (AR) to the center position side in the left and right direction of the traveling body (3), and the upper ends of the divided seedling mountings (13L) and (13R) are connected to each other. Is configured to be switchable to a parallel storage posture in the proximity state, and the posture of the second axis (X2), (X2) is set to an inclined posture whose upper end is directed forward of the traveling body (3). Rice transplanter.