JPH0440421Y2 - - Google Patents

Description

[Detailed description of the invention] "Industrial application field" This invention is equipped with a seedling platform that moves back and forth from side to side, and a planting claw that takes out one seedling from the platform and plants it continuously. The present invention relates to a planting device for a rice transplanter that performs rice transplanting work.

``Prior art'' Conventionally, as shown in Japanese Patent Application Laid-Open No. 199309, a rotary case that rotates at a constant speed in one direction is provided, and planting claws are arranged symmetrically around the rotational axis of the rotary case. technology has been developed.

"Problems to be solved by the invention" The above-mentioned conventional technology prevents interference between the planting claws and the field surface by stopping the front planting claws between the time of cutting the seedlings and reaching the field surface. There was a problem that the final planted seedlings came into contact with the planting nails or the nail cases that supported them, causing them to fall over, and there were other problems such as the already planted seedlings tending to become floating seedlings at the end of planting.

"Means for Solving the Problems" However, the present invention provides an apparatus in which the planted nails are taken out via the nail case 22 to a rotary case 21 that rotates at a constant speed in one direction.
1, the front planting claws 17 arranged symmetrically around this rotational axis are configured to be able to stop at least above the rice field, and the rear planting claws 17 can be stopped at a position higher than the height of the already planted seedlings. , the planting claw 17 is lower than the bottom surface of the planting case 20 in which the rotary case 21 is installed.
It is characterized in that the planting claw 17 is configured to be stopped so that the tip thereof faces upward.

"Function" Therefore, at the end of the planting process, it is possible to prevent the front planting claw from penetrating into the soil and disturbing the field surface, and by stopping the rear planting claw above the already planted seedlings, the final It is possible to prevent the already planted seedlings from being pushed down by the planting claws or the claw case to which they are attached, and the planting work can be completed more safely than before, and the occurrence of missing plants due to lodging and floating of the already planted seedlings is reduced. Furthermore, since the tip of the planting claw is stopped above the bottom surface of the planting case, even if a foreign object collides with the bottom surface of the planting case and the float is damaged, the planting claw can be protected by the planting case. This makes it possible to easily reduce the extent of damage and simplify repairs when an accident occurs.

"Embodiments" Examples of the present invention will be described below in detail based on the drawings. Fig. 1 is a side view of the planting section, Fig. 2 is a side view of the riding rice transplanter, and Fig. 3 is a plan view of the same. Attach the rear end of the body frame 3 to the transmission case 4.
A front wheel 6 for driving in paddy fields is supported on both sides of the front part of the transmission case 4 via a front axle case 5, and a transmission case 7, which is an axle case, is connected to both sides of the rear part of the transmission case 4.
are arranged in series, and a rear wheel 8 for running in paddy fields is supported at the rear end portion of the transmission case 7. 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 Planting case 2 via guide rail 19
0 so that it can slide left and right, and
As shown in the figure, a rotary case 21 that rotates at a constant speed in one direction is disposed in the planting case 20 at symmetrical positions with respect to the rotation axis, and the claw cases 22 are provided with planting claws. Install 17.
In addition, a center pin 2 is provided on the front side of the planting case 20.
A support frame 24 is provided on the rear side of the traveling vehicle 1 via a three-point link mechanism 27 including a top link 25 and a lower link 26.
The seedling is provided with an elevating cylinder 28 that connects the above and raises and lowers the planting section 15 via the link mechanism 27, and the front and rear wheels 6 and 8 are driven to move at a substantially constant speed, and at the same time, the seedling is slid back and forth from side to side. One seedling is taken out from a mounting table 16 by a planting claw 17, and rice planting work is continuously performed.

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 planting claws 17, 17 are provided on the rotary case 21 via the claw cases 22, 22 to the seedling take-out port 37 of the seedling take-out plate 36 provided at the lower end of the seedling stand 16. The two planting claws 17,
17, so that two seedlings are planted.

Next, as shown in FIGS. 6 and 7, a planting claw drive shaft 38 is rotatably supported at the rear end of the planting case 20, and rotary cases 21, 21 are fixed symmetrically to both ends of the drive shaft 38. At the same time, a sprocket 40 for suspending the planting pawl drive chain 39 is rotatably supported in the middle of the drive shaft 38, and a unit clutch 42 is provided with an upper stop cam 41 serving as an upper stop mechanism.
The sprocket 40 is interlocked and connected to the drive shaft 38 through the rotation of the clutch lever 43, so that the eccentric pin 45 of the clutch shaft 44 engages with the valley of the cam 41, and as the cam 41 rotates, the cam 41 is rotated. The clutch pawl on the 41 side is separated from the clutch pawl of the sprocket 40 to disconnect the unit clutch 42, and the eccentric pin 45 engages with the cam so that the unit clutch 42 can be disconnected by the cam 41 when the rotary case 21 is turned half a turn. 41 are provided at two locations at 180 degree intervals, so that two stopping positions are formed during one rotation of the rotary case 21.

Further, a sun gear 46 is loosely fitted to the planting claw drive shaft 38, and the sun gear 46 is fixed to the planting case 20 through a phase adjustment lever 47 so as to be able to adjust the phase thereof, and an idle gear having the same number of teeth as the sun gear 46 is attached. 48 and a planetary gear 49.
Then, the idle gear 48 is connected via the intermediate shaft 50,
Further, a planetary gear 49 is pivotally supported inside the rotary case 21 via a pawl case shaft 51 fixed to the pawl case 22, and each of the gears 46,
48, 49 are eccentrically supported on the respective shafts 38, 50, 51, and the sun gear 46 is provided with an idle gear 4.
The sun gear 46 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 case 21 are alternately moved to the seedling extraction port 37 at the lower end of the slope of the seedling stand 16, and in conjunction with the rotation of the rotary case 21, the planting claws 17, 17 are moved through the gears 46, 48, 49. The claw case shaft 51 is rotated at a non-uniform speed, and the rotation of the claw case shaft 51 is made faster than the rotation of the rotary case 21 after cutting the seedlings on the seedling stand 16 until reaching the rice field, and the rotation of the claw case shaft 51 is made faster than the rotation of the rotary case 21 from the time the seedlings are cut on the seedling stand 16 until reaching the rice field. The rotation of the claw case shaft 51 is made slower than the rotation of the rotary case 21 up to the exit 37, and the rotation of the rotary case 21 and the rotation of the claw case shaft 51 are made approximately equal near the seedling take-out port 37 and near the field planting area. However, the planting locus of the planting claws 17 is configured to be formed in a vertically long oval shape in front of the rotary case 21.

Further, one end of the camshaft 53 is rotatably fixed to the rotary case 21 via a position adjustment lever 52, and the camshaft 53 is loosely fitted to the claw case shaft 51.
The cam shaft 53 is connected via a push rod 55 to a push rod 54 that penetrates through the middle and is connected to the push-out claw 17a for forced planting. and pushed forward 54,
The push-out claws 17a are configured to push out the seedlings held between the planting claws 17 into the soil.

Furthermore, as shown in FIG. 1, flexible and elastic seedling extraction guides 56 are provided on both sides of the seedling extraction port 37, the upper ends of which are fixed and the lower ends of which extend downward. Place the claw 17 into the seedling retrieval guide 56, and insert the other planting claw 1 into the seedling removal guide 56.
7 are respectively stopped above the float 34,
The mounting angle of the rotary case 21 with respect to the planting claw drive shaft 38 and the timing of disconnection of the unit clutch 42 of the upper stop cam 41 are adjusted and set, respectively, and the planting claws 17 are stopped between after cutting the seedlings and reaching the field. is held between the seedling take-out guides 56 from both sides to hold the seedlings in the planting claw 17, while the planting claw 1 on the way from the field surface to the seedling take-out port 37
7, the lower side of the claw case 22, and the lower side of the rotary case 21 are positioned above the upper end of the already planted seedlings 57,
This is to prevent the planting claw 17 or claw case 22 on the rear side of the machine from pushing down the final planted seedlings, and the claw case 22 is attached to a rotary case 21 that rotates at a constant speed in one direction.
In the device in which the planting claws are attached through the rotary case 21, the front planting claws 17, which are arranged symmetrically about the rotation axis of the rotary case 21, are placed at least above the rice field, and the rear planting claws 17 are arranged symmetrically about the rotary case 21. The planting claws 1 are configured such that they can be stopped at positions higher than the height of the already planted seedlings, and the planting claws 17 are arranged so that the tips of the planting claws 17 are above the bottom surface of the planting case 20 in which the rotary case 21 is installed.
7 is configured to stop.

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 46, 48, 49, the claw case shaft 51 rotates at an inconstant speed to move the planting claw 17 to the seedling cutting position in front of the seedling extraction port 37, and to move the planting claw 17 to the planting position while entering the rice field. One seedling is planted by turning the rotary case 21 half a turn, and when the planting stop operation is performed via the clutch lever 43, the eccentric pin 45 comes into contact with the upper stop cam 41 and the unit clutch 42 is disconnected. As shown in FIG. 1, the front planting claw 17 is stopped within the seedling take-out guide 56 above the float 34, and the seedling take-out guide 56 prevents the seedlings cut and held by the planting claw 17 from falling off. In addition to eliminating the occurrence of missing plants when planting is restarted, the rear planting claw 17 is stopped above the float 34 at a higher position than the upper end of the final planted seedlings 57, so that the planting claw 17 rushes into the rice field and disturbs the rice field. In order to prevent
7, and prevents the planting claws 17 or the claw case 22 from coming into contact with the already planted seedlings and causing them to fall down.

"Effects of the Invention" As is clear from the above embodiments, the present invention provides an apparatus in which a planting claw is attached via a claw case 22 to a rotary case 21 that rotates at a constant speed in one direction.
The front planting claws 17, which are arranged symmetrically about the rotation axis in the rotary case 21, can be stopped at least above the rice field, and the rear planting claws 17 can be stopped at a position higher than the height of the already planted seedlings. Along with configuring
The planting claw 17 is configured to be stopped so that the tip of the planting claw 17 is above the bottom surface of the planting case 20 in which the rotary case 21 is installed, and the front planting claw 17 is stopped at the end of the planting process. 17 can be prevented from penetrating into the soil and disturbing the rice field, and by stopping the rear planting claw 17 above the already planted seedlings 57, the final planted seedlings 57 can be removed from the planting claw 17 or the claw to which it is attached. The case 22 can prevent the seedlings from being pushed over, allowing the planting work to be completed more safely than in the past, reducing the occurrence of missing plants due to lodging and floating of the already planted seedlings 57, and furthermore, the planting case 20 Since the tips of the planting claws 17 are stopped above the bottom surface, even if a foreign object collides with the lower surface of the planting section 15 and the float 34 is damaged, the planting claws 17 can be protected by the planting case 20, which prevents accidents from occurring. This makes it easy to reduce the extent of damage caused by damage and simplify repairs.

[Brief explanation of drawings]

Fig. 1 is an enlarged side view of a planting part showing an embodiment of the present invention, Fig. 2 is an overall side view, Fig. 3 is a plan view of the same, Fig. 4 is a side view of the planting part, and Fig. 5 is a side view of the planting part. The figure is the same plan view, Figure 6 is a sectional side view, and Figure 7 is a sectional plan view.
FIG. 8 is a front view of the main part. 17... Planting nail, 21... Rotary case, 2
2...Claw case, 57...Already planted seedlings.

Claims (1)

[Scope of utility model registration request] In a device in which a planting claw is attached to a rotary case 21 that rotates at a constant speed in one direction via a claw case 22, a front planting claw 17 is provided on the rotary case 21 symmetrically about the rotation axis. At least the planting claws 17 at the rear are configured to be able to be stopped above the rice field and at a higher position than the height of the already planted seedlings, and the tip of the planting claws 17 is lower than the bottom surface of the planting case 20 in which the rotary case 21 is installed. A planting device for a rice transplanter, characterized in that the planting claws 17 are stopped so that the planting claws are positioned upward.