JP2674500B2 - Seedling planting equipment - Google Patents

Description

Description: BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a rotary type seedling planting device for a seedling planting machine. 2. Description of the Related Art In order to reduce vibration and increase the speed of seedling transplantation, a rotating case is used instead of a crank type seedling planting device in which an intermediate portion is rotated by a crank and a seedling separation claw at the tip reciprocates up and down. In Japanese Patent Publication No. 49-31773, there is proposed a rotary seedling planting device in which the seedling separating claw turns in a similar posture on the side of the plant. In the conventional device, the planted transmission case and the sun gear are engaged outside the rotary case, so that the grass between the rotary case and the planted transmission case may occur during work. If the sun wraps around or mud gets in, the sun gear will be pushed outwards, the bite width with the counter planetary gear will decrease, and the gear teeth may be damaged. It was a structure that could easily get in. This invention prevents the sun gear from being pushed by wrapped grass or invaded mud without reducing the productivity and maintainability of the seedling planting device, eliminating the risk of damage to its tooth profile, and The configuration is such that it is easy to prevent muddy water and the like from entering the case. In order to solve the above problems, the present invention has a rotating case 22 detachably attached to a planting drive shaft 23 provided in a planting transmission case 18.
A plurality of planting shafts 31a, 31a are rotatably supported, and each of the planting shafts 31a, 31a is provided with a seedling planting tool 34 having a seedling separating claw 39. The seedling separating claws 39, 39 of each seedling planting tool 34 have a similar attitude between the sun gear 29 that does not rotate provided in the center and the planting shafts 31a, 31a as the rotating case 22 rotates. In a seedling planting device provided with a gear transmission mechanism that operates so as to take seedlings one by one from the seedling placed on the seedling placement table 19 by swiveling at The tip of the fixed member 28 that covers the drive shaft 23 is provided so as to be freely inserted into and removed from the inner wall of the rotating case 22 inside the rotating case 22, and the tip end portion 28a of the fixing member 28 inserted into the rotating case 22 has the rotating case 22. Of the sun gear 29 installed inside Is obtained by a seedling planting apparatus which is characterized in that a structure for securing against rotation the sun gear 29 engages inside of the rotation to the engagement portion 29a case 22. According to the present invention, the rotating case 22 is provided.
Since the rotating case 22 can be attached to the planting drive shaft 23 with the gear transmission mechanism incorporated therein, the rotating case 22
The work of incorporating the gear transmission mechanism inside can be performed separately in a large place, and productivity is good. At the same time, since the rotating case 22 can be removed from the planting transmission case 18 in the same state, the rotating case 22 can be inspected and maintained in a wide place and in an easy posture. Further, when fixing the sun gear 29 so as not to rotate, it is carried out in the rotating case 22 before the fixing member 28 protruding into the rotating case 22 from the planted transmission case 18 side. like,
There is no risk that grass or invading mud wrapped between the planting transmission case and the sun gear will break in and push open the two. Prevention and proper seedling planting work can be performed. Furthermore, the planted drive shaft 2 is fixed to the planted transmission case 18.
The tip of the fixed member 28 that covers the inner surface of the rotary case 22 is provided so that it can be inserted into and removed from the inner wall of the rotary case 22.
The tip 2 of the fixed member 28 inserted in the rotating case 22
Since 8a is configured to engage with the engaging portion 29a of the sun gear 29 provided in the rotating case 22 inside the rotating case 22 to fix the sun gear 29 so as not to rotate, it protrudes from the planted transmission case 18. The rotation case 22 is fitted from the outside to the fixing member 28 that covers the planting drive shaft 23, and it is easy to prevent the entry of muddy water and the like, and the operation thereof is long-term. Stability across migration. Further, since the engaging portion 29a of the sun gear 29 is provided so as not to project outside from the rotating case 22, the rotating case 22 is attached to the planting drive shaft 23 with the gear transmission mechanism incorporated as described above. When removing from
With the rotating case 22 removed, the sun gear 2
The engagement portion 29a of 9 is less likely to be damaged, and the sun gear 29 can be fixed in a good state, and the operation of the seedling planting device becomes reliable. DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS An embodiment of the present invention will be described with reference to FIGS. 1 is a passenger towing vehicle, 2 is a pair of left and right front wheels, 3 is a pair of left and right rear wheels, 4 is an engine, 5 is a control seat, and 6 is a control handle. Reference numeral 7 denotes a steering operation frame, and 8 denotes a main transmission case. The transmission is transmitted from the engine 4 to an internal transmission, and the front wheels 2 and the rear wheels 3 are driven from the drive shaft 9.
Power is transmitted via the PTO shaft 11 and the transmission shaft 1
The power is transmitted to a rice transplanter 13 described below via the second power plant 2. Reference numeral 14 denotes a planting clutch lever, by which a main seedling planting clutch, which will be described later, is operated "ON" and "OFF". 15 is a lifting link mechanism, which is a hydraulic cylinder device 1
The hitch 17 is vertically moved at 6 to move up and down.
Reference numeral 18 denotes a planted transmission case, which is attached to the hitch 17. Reference numeral 19 denotes a seedling placing table, which is supported on the upper side of the planting transmission case 18 so as to be tilted so that the front side is upward, and is horizontally moved by a reciprocating lateral movement device in the planting transmission case 18. The seedling placing table 19 is divided into a predetermined width in the lateral direction by partition bodies 20 ..., and a plurality of seedling placing tables 19a, 19b, 19c, 19d.
9e. Reference numeral 21 denotes a seedling receiving plate, which is provided in a substantially L shape in a side view and is extended in the lateral direction along the lower end side of the seedling placing table 19.
Seedling splitting openings 21a ・ 21b ・ for seedlings a to 19e
21c, 21d, and 21e are provided. 22 (22
a. 22b, 22c, 22d, and 22e) are rotating cases, which are vertical transmission cases 18a and 18 that branch backward from the planted transmission case 18 at a predetermined interval in the left-right direction.
A central portion of the front and rear is attached to the rear end side of the b · 18c so as to be integrally rotated by the key 23a on the planting drive shaft 23. 24 is a gear wedged to the planted drive shaft 23, 25 and 26 are counter gears, and 27 is an input sprocket. 28 is a fixing member, which is the vertical transmission case 18a.
-The bearing drive shaft 23 is fixed to the outer side of 18b and 18c through a bearing, and the tip end 28a of the fixing member 28 through which the shaft 23 is inserted is attached to the axis of the shaft 23. It is eccentric. In addition, the fixed member 28 is provided so as to cover the planting drive shaft 23, and the tip of the fixed member 28 extends from the inner wall of the rotary case 22 to the rotary case 22.
It is installed inside and out freely. Reference numeral 29 denotes a sun gear, which is integrally provided with an engaging portion 29a which is inserted into and engaged with the tip end portion 28a of the fixing member 28 so as to prevent rotation. That is, the fixed member 2 inserted in the rotating case 22
The tip end 28a of 8 engages with the engaging portion 29a of the sun gear 29 provided in the rotating case 22 inside the rotating case 22 to fix the sun gear 29 so as not to rotate. Further, the sun gear 29 is a gear in which the pitch circle is not a perfect circle with respect to the axis center of the planted drive shaft 23. The fitting hole 28b for inserting the fixing member 28 into the rotating case is larger than the outer diameter of the sun gear 29, so that the sun gear 29 can be inserted and removed.
Reference numeral 30 denotes a counter planetary gear, which is rotatably supported in the rotating case 22 and has a sun gear 2
9 is always occluded. Reference numeral 31 denotes a planetary gear, which is located at the tip end side in the rotary case 22 and meshes with the counter planetary gears 30. The planetary gear 31 is provided with a cylindrical planting shaft 31a which is integral with the planetary gear 31, and one end of the planetary gear 31 projects outward from the rotating case so that the shaft can be inserted into the planting shaft 31a. It is configured. Reference numeral 32 denotes a cam shaft which is inserted into the planting shaft 31a and traverses the inside of the rotating case 22 and one end of which is the rotating case 22.
Stop plate 3 fixed to the outer wall surface of the planted transmission case side
3, and the other end projects outward from the planting shaft 31a. 34 is a seedling planting tool, which is a planting case body 35,
It is composed of a seedling pushing operation cam 36, an interlocking rod 37, a pushing shaft 38, a seedling separating claw 39, and the like. The planting case body 35 is provided with a planting shaft 31 integrated with the planetary gear 31.
a metal 60 provided so as to be fitted to the outer peripheral portion of a and to be slightly moved in the axial direction of the boss with the cotter pin 40 and to be fixed.
And is provided so as to rotate integrally with the planting shaft 31a. And this metal 6
0 is a fitting portion 60a protruding into the planting case main body 35.
6 for integrally fixing the planting case body 35 with the planting case body 35
The flange portion 60b and the planting case main body 35 are fixed to each other with bolts 61. The seedling pushing operation cam 36 is provided so that the tip end portion of the cam shaft 32 is formed into a square shaft and fitted into the square shaft so as to rotate integrally with the cam shaft 32. The interlocking rod 37 has a front and rear intermediate portion rotatably received by the planting case 35 by a pin 41, a base portion thereof is provided so as to contact the outer periphery of the cam 36, and a tip end portion thereof is formed in a fork shape. The pin 41 is configured so as to be prevented from being pulled out on the inner surface of the flange portion 60b of the metal 60. 38
Is an extruding shaft, which is axially slidably supported on the tip side of the planting case 35, and has a lower end protruding outside the case. The lower end is formed on the seedling extruding piece 38a, and the upper end side is formed. Part of the outer circumference is cut into an oval shape and the interlocking rod 37 is
Is engaged with the tip fork portion of the. 42 is a spring.
The seedling separation claw 39 is detachably attached to the tip of the planting case 35. As described above, two seedling planting devices 34 are attached to each of the rotating cases 22 and are configured to rotate while being rotated to draw a long planting locus (a) in a vertical direction. There is. Then, the two seedling planting tools 34 provided in a single rotating case are grouped into one group, and in the illustrated example, they are made up of A, B, C, D, and E seedling planting tool groups. 43 is a drive shaft, which is the planted transmission case 1
It is extended laterally so that it can be transmitted and rotated in 8.
Drive sprockets 44, 44, 44 are fixed to the roots of the vertical transmission cases 18a, 18b, 18c, and the input sprockets 27 are rotated via a chain to transmit the planted drive shaft 23 side. It is provided. Reference numeral 45 is a main seedling planting clutch, in which a drive clutch gear 46 with a clutch pawl, which is transmitted from the prime mover side, is freely rotatably attached to the drive shaft 43, and the drive clutch gear 46 is provided with a clutch pawl and a fixed position stop cam 47a. The driven clutch body 47 is movably provided on the drive shaft 43 in a wedged state, and the spring 48 causes the resilient engagement to the drive clutch gear 46 side, and the clutch pin 49 slidably provided on the planted transmission case 18 is provided. The fixed position stop cam 47a is configured to be detachably provided, and the pin 49
Contacting the cam surface (b), the spring 4 receives the rotational force.
The driven clutch body 47 escapes against 8 and the clutch claw is disengaged to stop the rotation of the drive shaft 43.
In the illustrated example, the number of the fixed position stop cams 47a is two, which is the number of the seedling attachments 34 that are equally divided into two on the rotating outer peripheral surface and are attached to one of the rotating cases 22. . Needless to say, if the rotating case 22 is provided with three seedling planting implements 34, the number of fixed position stop cams 47a will be three. Reference numeral 50 denotes a clutch wire, which connects the planted clutch lever 14 and the clutch pin 49. Although the main planting clutch 45 is provided in the planting transmission case 18 in the illustrated example, it is provided in the main transmission case 8 to transmit power to the rice transplanter 13 side.
It goes without saying that the rotation of the shaft 11 may be stopped at a fixed position. In the figure, 51 is a leveling float in the central part,
Reference numeral 52 denotes leveled floats on both left and right sides. Explaining the operation of the above example, when the seedlings are placed on the seedling placement tables 19a to 19e and the respective parts are rotated by the engine 4, the passenger towing vehicle 1 is propelled by the rotation of the front wheels 2 and the rear wheels 3 and the rice transplanter 13 parts. Is partially towed by the leveling floats 51 and 52 and is towed,
Power is transmitted from the PTO shaft 11 via the transmission shaft 12 to the input shaft in the planted transmission case 18 from the main mission case 8 side. Then, via the main planting clutch 45, the drive shaft 4
3 is transmitted and rotated, and the planted drive shafts 23 ... Are rotated from this drive shaft 43 via a sprocket, a chain, and the like.
Then, each rotating case 22 rotates, and with this rotation, the counter planetary gears 30 around the sun gear 29.
30 is rotated by a planet, and planet gears 31.3 that mesh with it
1 will be rotated. Therefore, planetary gear 3
1. Implantation case main body 3 fixed by means of metal 60 fixed by cotter pin 40 to the planting shaft 31a integral with 1.31
5 is rotated with respect to the rotating case 22,
Since the cam shafts 32 and 32 integrated with 2 are not rotated by the gear 31 as a matter of course, the planting case main body 35 of the eccentric pitch circle of the sun gear 29 is opposed to the push-out actuating cam 36 fixed to the cam shaft 32. Therefore, the peripheral speed is rotated while varying. Therefore, the interlocking rod 37 swings by the cam 36, and the pushing shaft 38 moves up and down. Then, the tip end side of the seedling separating claw 39 attached to the planting case main body 35 operates by drawing a planting locus (a), and intervenes in succession from above into the seedling dividing ports 21a to 21e of the seedling receiving plate 21, The seedlings on the seedling placement tables 19a to 19e that reciprocate left and right are divided into individual plants and planted in the field scenes which have been cultivated by the cultivated floats 51 and 52. That is, when the seedling pushing shaft 38 is located above the planting case 35, the seedlings are divided from the seedling placing table, and when the seedling pushing shaft 38 is projected into the field, the cam 36 and the cam floor portion of the interlocking rod 37 are provided. The spring 42 is used to rapidly push the seedling into the soil. Further, since the two seedling planting tools 34 are attached to the rotating case 35, seedling planting can be performed at high speed. Further, in particular, since the rotating case 22 can be attached to the planting drive shaft 23 in a state where the gear transmission mechanism is incorporated in the rotating case 22, the work of incorporating the gear transmission mechanism in the rotating case 22 can be performed in a wide space separately. Good productivity. At the same time, since the rotating case 22 can be detached from the planted transmission case 18 in the same state, the rotating case 2 can be easily mounted in a wide space.
2 inspection and maintenance can be performed. Also, sun gear 2
When fixing 9 so as not to rotate, it is carried out in the rotating case 22 at the tip of the fixing member 28 protruding into the rotating case 22 from the planted transmission case 18 side. The grass wrapped between the transmission case and the sun gear and the invading mud do not interrupt and push the two open, so there is no risk of changing the meshing of the gear transmission mechanism and preventing damage. This allows proper planting work of seedlings. Furthermore, the planted transmission case 18
A tip of a fixing member 28 fixed to the rotary casing 22 and covering the planting drive shaft 23 is provided so as to be freely inserted into and removed from the inner wall of the rotating case 22, and the tip portion of the fixing member 28 inserted into the rotating case 22. 28a is engaged with the engaging portion 29a of the sun gear 29 provided in the rotating case 22 inside the rotating case 22 to fix the sun gear 29 so as not to rotate, so that it protrudes from the planted transmission case 18. The rotation case 22 is fitted from the outside to the fixing member 28 that covers the planting drive shaft 23, which makes it easy to prevent intrusion of muddy water or the like, and the operation thereof is long-term. Stability across migration. Also, the engaging portion 29 of the sun gear 29
a is provided so as not to project outside from the rotating case 22, and when the rotating case 22 is attached to or detached from the planted drive shaft 23 with the gear transmission mechanism incorporated as described above, In the detached state, the engaging portion 29a of the sun gear 29 is less likely to be damaged, and the sun gear 29 can be fixed in a good state, and the operation of the seedling planting device becomes reliable.

[Brief description of the drawings] [Fig. 1] Overall side view of riding type rice transplanter [Fig. 2] Plan view of main parts of riding type rice transplanter [Fig. 3] Simplified perspective view of transmission mechanism [Fig. 4] Side of main part Cross-sectional view [Fig. 5] Plane cross-sectional view [Description of symbols] 18 Transmission case with planting 19 Seedling placement table 22 Rotating case 23 Drive shaft with planting 28 Fixing member 29 Sun gear 30 Planetary gear 31 Planetary gear 31a Planting shaft 34 Seedling planting equipment 39 Seedling separation nails

Claims (1)

(57) [Claims] A plurality of planting shafts 31a, 31a are rotatably supported by a rotating case 22 that is detachably attached to a planting drive shaft 23 provided in the planting transmission case 18, and the planting shaft 31a.
Each 31a is provided with a seedling planting tool 34 having a seedling separating claw 39, and the rotating case 22 has a non-rotating sun gear 29 provided at the center of rotation thereof and each of the planting shafts 31.
a. 31a and the seedling separating nail 39 of each seedling planting device 34.
39 seedling planting provided with a gear transmission mechanism in which 39 rotates in a similar posture as the rotating case 22 rotates to take seedlings one by one from the seedlings placed on the seedling placing table 19. In the apparatus, a tip of a fixing member 28 fixed to the planted transmission case 18 and covering the planted drive shaft 23 is provided so as to be freely inserted into and removed from the inner wall of the rotary case 22 in the rotary case 22. The tip portion 28 a of the inserted fixing member 28 has the sun gear 29 provided in the rotating case 22.
Internal engaged with the sun of the engaging portion 29a in the rotating case 22
The seedling planting device characterized in that the gear 29 is fixed so as not to rotate .