JPH0440419Y2 - - Google Patents

Description

[Detailed description of the invention] "Industrial application field" This invention relates to a rice transplanter that takes out one seedling from a seedling stand using the planting claw and plants it in the field one by one.
The present invention relates to a rotary planting device in which a planting transmission case supports a rotary case having a plurality of planting claws, and seedling planting work is performed using each planting claw by rotating the rotary case.

"Prior Art" This type of rotary planting device is disclosed in, for example, Japanese Patent Application Laid-Open No. 199309/1983, and the rotary case is usually integrally fixed to the output shaft of the planting transmission case.

``Problem that the invention aims to solve'' Therefore, if the parallelism of the rotary case to the planting transmission case cannot be maintained due to processing accuracy, etc.,
The seedling removal positions of the multiple planting claws supported by the rotary case may be different, resulting in variations in the size of each seedling being taken out, or in the worst case, the planting claws may be at different seedling removal positions. There were drawbacks such as interfering with the seedling removal board.

``Means for Solving the Problems'' However, in the present invention, a rotary case having planting claws is supported by a planting transmission case, and seedling planting work is performed using each planting claw through rotational movement of the rotary case. In this structure, an adjustment member is provided to freely adjust the inclination of the rotary case in the axial direction of the planting pawl drive shaft which pivotally supports the rotary case on the planting transmission case, and the seedling taking out port of the seedling taking out plate and the planting The device is characterized in that the relative position of the claws is adjusted by an adjustment member.

``Function'' Therefore, even if there is a machining or assembly error in the connection between the planting transmission case and the rotary case, or the connection between the rotary case and the planting claw, the adjustment member can adjust the inclination of the rotary case to improve the seedling removal port. The position of the tip of the planting nail can be easily adjusted, and the position of the tip of the planting nail can be easily corrected, and assembly and maintenance and repair work can be easily simplified.

"Embodiments" Examples of the present invention will be described below in detail based on the drawings. Fig. 1 is a cross-sectional explanatory diagram of the rotary case part, Fig. 2 is a side view of the riding rice transplanter, and Fig. 3 is a plan view of the same.
The rear end of the vehicle body frame 3 on which the engine 2 is mounted is connected to a transmission case 4, and front wheels 6 for running in paddy fields are supported on both sides of the front part of the transmission case 4 via a front axle case 5. A transmission case 7, which is an axle case, is connected to both rear sides of the case 4, and a rear wheel 8 for running in paddy fields is supported at the rear end of the transmission case 7. Then, a spare seedling stand 10 is attached to the outside of both sides of the bonnet 9 that covers the engine 2, and the transmission case 7 and the like are covered by the vehicle body cover 12 forming the step 11, and the driver's seat 13 is mounted on the upper part of the vehicle body cover 12. A steering handle 14 is provided at the rear of the bonnet 9 in front of the driver's seat 13.

Furthermore, 15 in the figure is a planting section that has a seedling stand 16 for multi-row planting, a plurality of planting claws 17, etc., and the rear-tilting seedling stand 16 with a high front height and a low back is connected to a guide rail 18 and A rotary case 21 is supported via a guide rail 19 by a planting case 20, which is a planting transmission case, so as to be able to slide back and forth from side to side, and as shown in FIG. 20, nail cases 22, 22 are arranged at symmetrical positions with respect to this rotational axis, and a planting nail 17 is attached to the tip of the nail case 22. In addition, the planting case 20
The support frame 2 is attached to the front side of the support frame 2 via the pivot shaft 23.
4, top link 25 and lower link 2
A support frame 24 is connected to the rear side of the traveling vehicle 1 via a three-point linkage mechanism 27 including a three-point linkage mechanism 27, and an elevating cylinder 28 for elevating the planting section 15 via the linkage mechanism 27 is provided. At the same time, one seedling is taken out by a planting claw 17 from a seedling platform 16 which is driven to travel and moved at a substantially constant speed, and the seedling planting work is performed continuously. do.

In addition, in the figure, 29 is a traveling speed change lever, 30 is a planting lift lever, 31 is a planting sensitivity adjustment lever, 32
is a traveling clutch pedal, 33, 33 is a left and right brake pedal, 34... is a float for leveling the field,
The floats 34 are supported below the planting case 20 via a planting depth adjustment link 35 or the like.

Further, as shown in FIG. 5, two seedlings provided in the rotary case 21 are planted via claw cases 22, 22 to the seedling take-out opening 37 of the seedling take-out plate 36 in the guide rail 19 provided at the lower end of the seedling stand 16. Claw 17,
17 of the rotary case 21 alternately.
It is configured so that two seedlings are planted by rotating the two planting claws 17, 17.

As shown in FIG. 6, a planting claw drive shaft 38, which is an output shaft, is rotatably supported at the rear end of the planting case 20, and the rotary case 21,
21 are fixedly supported symmetrically. Further, a sun gear 39 is loosely fitted to the planting claw drive shaft 38 in the rotary case 21, and the sun gear 39 is fixed in position to the planting case 20 via the phase adjustment lever 40 so as to be able to freely adjust the phase. Idle gear 41 and planetary gear 4 with the same number of teeth
2, and an idle gear 41 via an intermediate shaft 43.
The planetary gear 42 is also connected via a pawl case shaft 45 fixed to the pawl case 22 with a bolt 44.
is pivotally supported within the rotary case 21.
Each gear 39, 41, 42 is connected to each shaft 38, 43,
45 is eccentrically supported by a certain dimension, and idle gears 41 and 4 are symmetrically supported to the central sun gear 39.
1, two planetary gears 42, 42 are constantly meshed in a line, the sun gear 39 is fixedly supported on the planting case 20, and the rotary case 21 is rotated at a constant speed via the planting claw drive shaft 38. The planting claws 17, 17 at both ends of the rotary case 21 are provided so as to be alternately moved downward to the seedling outlet 37 at the lower end of the slope of the seedling platform 16. In conjunction with the rotation of the rotary case 21, the gears 39, 41,
42 to rotate the claw case shaft 45 at an inconstant speed,
The rotation of the claw case shaft 45 is made faster than the rotation of the rotary case 21 after cutting the seedlings on the seedling platform 16 until reaching the rice field surface, and the seedling extraction port 37 is opened after seedlings are planted on the rice field surface.
The rotation of the claw case shaft 45 is made slower than the rotation of the rotary case 21 during the process, and the rotation of the rotary case 21 and the rotation of the claw case shaft 45 are made approximately equal in the vicinity of the seedling extraction port 37 and the vicinity of the rice planting. Planted nail 1
The planting locus according to 7 is configured to draw a vertically elongated oval in front of the rotary case 21.

Further, the claw case shaft 45 allows a camshaft 46 to freely rotate therethrough, and one end of the camshaft 46 is fixedly supported by the rotary case 21 via a position adjustment plate 47 and a bolt 48 so as to be rotatably adjustable. At the same time, a push rod 49 connects the other end of the camshaft 46 to the extrusion claw 17a for forced planting in the claw case 22.
The pusher arm 50 and the pushing cam 51 are connected to each other, so that when the planting claw 17 enters the rice field, the push rod 49 is advanced and the seedlings held between the planting claws 17 are pushed out into the soil by the pushing claw 17a. It is composed of

As shown in FIGS. 7 to 9, the rotary case 21 is fixed to the planting claw drive shaft 38 via a rotary case mounting bracket 52, a shim 53 serving as a rotary gap adjustment section, and a mounting bolt 54. The case mounting bracket 52 has an engagement hole 55 in the center for fitting into the hexagonal shaft end 38a of the drive shaft 38, and three engagement arms 52a arranged at equal intervals radially outward. The bolts 54 are arranged on the same circumference of these arm portions 52a.
A bolt insertion hole 56 is provided. Then, the drive shaft 38 and the metal fitting 52 are fixed with a bolt 57 so that the center of the metal fitting 52 comes into contact with the shaft end surface 38b of the drive shaft 38, and the rotary case 2 It is configured to fixedly support the outer surface of the. The shim 53 is formed in a U shape, and a shim 5 of an appropriate thickness is installed from the outside at each bolt 54 position between the rotary case 21 and the mounting bracket 52.
3 is inserted to adjust the mounting gap and parallelism between the planting case 20 and the rotary case 21. As is clear from the above,
A rotary case 21 having a planting claw 17 is supported by the planting transmission case 20, and the rotary case 21
In the structure in which the seedling planting work is carried out by each planting claw 17 with the rotational movement of Mounting bracket 5 which is an adjustment member that can be attached to adjust the tilt freely.
2, a shim 53, and a bolt 54 are provided, and the relative position of the seedling extraction port 37 of the seedling extraction plate 36 and the planting claw 17 is adjusted by the mounting fitting 52, the shim 53, and the bolt 54.

By the way, the inner and outer bearings 58 and 59 interposed between the sun gear 39 and the rotary case 21, and between the drive shaft 38 and the rotary case 21, respectively, have some flexibility so that the inclination of the rotary case 21 can be adjusted. , either one of the bearings 58, 59 may be converted to a seal, or an alignment bearing may be used for the inner bearing 58. By using an alignment bearing, the mounting angle, that is, the inclination of the rotary case 21 can be adjusted. It is something that can make it easier.

The present embodiment is constructed as described above, and by continuously rotating the rotary case 21 in one direction at a constant speed in the longitudinal direction of the machine centering on the planting claw drive shaft 38, each gear 39, 41, 42, the claw case shaft 45 rotates at an inconstant speed, moves the planting claw 17 to the seedling cutting position before the seedling extraction port 37, and shifts the planting claw 17 to the planting position while entering the rice field. One seedling is planted by rotating the rotary case 21 half a turn.

Therefore, when adjusting the mounting position of the rotary case 21 with respect to the planting case 20, loosen the bolts 54 to set the desired thickness in the gap formed between the rotary case 21 and the mounting bracket 52. By inserting the shims 53 of the same thickness, the mounting gap of the rotary case 21 to the planting case 20 can be adjusted by inserting the shims 53 of different thicknesses. Parallelism can be adjusted by correcting the inclination of the rotary case 21 with respect to the attached case 20. At this time, as shown in FIG. 10, the thickness of the shim 53 is tapered so that the thickness T on the rear end side is larger than the thickness T on the insertion tip side.
By changing the insertion distance of a single type of shim 53, it is possible to adjust the size of the gap between the cases 20 and 21 and the parallelism.

"Effects of the Invention" As is clear from the above embodiments, the present invention allows the planting transmission case 20 to support the rotary case 21 having the planting claws 17, and the rotational movement of the rotary case 21 causes each planting claw 17 to In a structure designed to carry out seedling planting work, the planting transmission case 2
Adjustment members 52, 53, and 54 are provided to adjust the tilt of the rotary case 21 in the axial direction of the planting claw drive shaft 38 which pivotally supports the rotary case 21, and the seedling removal port 37 of the seedling removal plate 36 and the planting claw It is configured so that the relative position of the attached claw 17 is adjusted by adjustment members 52, 53, and 54, and the planting transmission case 2
Even if a machining or assembly error occurs in the connecting portion between the rotary case 21 and the rotary case 21 or the connecting portion between the rotary case 21 and the planting claw 17, the adjustment members 52, 53, 54
By adjusting the inclination of the rotary case 21, the tip of the planting claw 17 can be easily adjusted for planting with respect to the seedling outlet 37, and the position of the tip of the planting claw 17 can be easily corrected, making assembly and maintenance repair work easier. This allows for easy simplification.

[Brief explanation of the drawing]

Figure 1 is a cross-sectional explanatory diagram of the rotary case part, Figure 2
The figure is a side view of the whole, Fig. 3 is a plan view of the same, Fig. 4 is a plan explanatory view of the planting section, Fig. 5 is an explanatory side view of the rotary case section, Fig. 6 is an explanatory view of the inside, and Fig. 7 is an explanatory plan view of the planting section. The figure is an enlarged explanatory view of the same part, Fig. 8 is an explanatory view of the rotary mounting bracket, and Figs. 9 and 10 are explanatory views of the gap adjustment member. 17... Planting claw, 20... Planting transmission case (planting case), 21... Rotary case, 38...
Output shaft (planting claw drive shaft), 53...Gap adjustment section (shim).

Claims (1)

[Scope of utility model registration request] A rotary case 21 having a planting claw 17 is supported by the planting transmission case 20, and the rotary case 2
In the structure in which the seedling planting work is performed by each planting claw 17 even with one rotational movement, the rotary case 21 is moved in the axial direction of the planting claw drive boat 38 which pivotally supports the rotary case 21 on the planting transmission case 20. Adjustment members 52, 53, 5 to which the inclination can be adjusted freely
4, and the relative position of the seedling take-out port 37 of the seedling take-out plate 36 and the planting claw 17 is adjusted by adjusting members 52, 53, and 54.