JPH0435123B2 - - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION Field of Industrial Application This invention relates to a seedling planting device for a transplanter in which a seedling planting tool is installed in a rotating case.

Prior Art Conventionally, a seedling planting device of a high-speed transplanter in which a seedling planting tool is attached to a rotating case is disclosed in Publication of Utility Model Publication No. 47-28103,
Utility Model Publication No. 47-28104, Publication No. 47-28106, Publication No. 49-26115, Publication No. 21212 of Utility Model 56-21212, Publication of Japanese Utility Model Publication No. 47-2527, Publication of Japanese Utility Model Publication No. 47-33891
Publication No., Special Publication No. 6848, Special Publication No. 1977-
Publication No. 17806, Special Publication No. 17807, Special Publication No. 17807, Special Publication No. 17807
−17808 Publication, Special Publication No. 49-31773, Special Publication Sho
This is a well-known technique as disclosed in Publication No. 49-35528 and the like.

However, these seedling planting devices open and close the transplanting claws to transplant the seedlings while holding them, and the cam for opening and closing is attached to a shaft that is driven and rotated by a transmission mechanism inside the rotating case. Or, a structure was adopted in which the operation was performed by a member integrated with the rotating case, but with the exception of models in which the cam was exposed outside the planting case, the lid of the planting case could be directly attached to the main body of the planting case. There has been no mounting member that allows the cam to be taken out from the lid side.

Problems to be Solved by the Invention In the prior art invention, it was difficult to attach and remove the cam within the planting case body. In other words, the cam needs to be housed inside the planting case body because it needs to be protected from soil and muddy water in the field.
It is necessary to make it easy to remove the cam from the case body for assembly, disassembly, adjustment, etc., but this has been difficult with conventional techniques.

Technical Means for Solving the Problems The present invention takes the following technical means to solve the problems of the prior art described above.

That is, the camshaft 32 is integrally attached to the rotating case 22 and protrudes outward across the inside of the rotating case 22, and the camshaft 32 is loosely fitted onto the camshaft 32 inside the rotating case 22 and rotated by transmission. planetary gear 3
a cylindrical shaft 31a that is integral with 1 and protrudes outward from the rotating case 22 in the same direction as the camshaft 32;
In a seedling planting device in which the planting case main body side is attached to the cylindrical shaft 31a and the operating cam 36 of the seedling planting pushing device provided inside the planting case main body is attached to the cam shaft 32, a metal that is fixed to the cylindrical shaft 31a is used. 6
0 is fixed to the planting case main body 35, and the outer end side of the metal 60 is inserted into the planting case main body, so that the metal 60 substantially doubles as a lid on the removal side of the operating cam 36. It was used as a device.

Effects and Effects of the Invention According to the present invention, the cam shaft 32 rotates integrally with the rotary case from the rotary case 22, and the cylindrical shaft 31a that is fitted to the camshaft and rotates by transmission is connected to the operating cam 36 and the planting case. When attaching the main body 35, the metal 60, which is integrally attached to the cylinder shaft, serves as a lid on the extraction side of the cam 36 and can be removed and separated from the main body of the planting case 35. The planting case main body 35 can be easily removed while leaving the side as it is on the rotating case 22, and the cam 36 in the planting case main body can be easily disassembled and assembled.

Embodiment An embodiment of the present invention will be described based on FIGS. 1 to 5.

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. 7 is a control frame, 8 is a main transmission case, and the power is transmitted from the engine 4 to the internal transmission, which then connects to the front wheels 2.
The power is transmitted to the rear wheels 3 through drive shafts 9 and 10, and the power is transmitted through a PTO shaft 11 and a transmission shaft 12 to a rice transplanter 13, which will be described later.

Reference numeral 14 denotes a planting clutch lever, by which a main seedling planting clutch, which will be described later, is turned on and off.

Reference numeral 15 denotes an elevating link mechanism, which is moved up and down by a hydraulic cylinder device 16 to move the hitch 17 up and down.

Reference numeral 18 denotes a planting transmission case, which is attached to the hitch 17 mentioned above.

Reference numeral 19 denotes a seedling mounting table, which is tilted and supported above the planting transmission case 18 so that the front side faces upward, and is provided so as to be moved left and right by a left and right reciprocating lateral movement device inside the planting transmission case 18. There is. This seedling mounting table 19 has partitions 2 in the left and right directions.
A plurality of seedling mounting stands 19a, 19b, 19c, 19 are divided into predetermined widths by 0, 20...
d, 19e.

Reference numeral 21 denotes a seedling receiving plate, which has a substantially L-shape when viewed from the side and extends horizontally along the lower end side of the seedling mounting table 19.
Seedling dividing openings 21a, 21 where seedlings of ~19e can be divided
b, 21c, 21d, and 21e are provided.

Reference numerals 22a, 22b, 22c, 22d, and 22e are rotating cases, and vertical transmission cases 18a, 18b, and 18c that protrude and branch rearward from the planting transmission case 18 at a predetermined interval in the left-right direction are provided on the rear end side thereof. The key 23a is attached to the planting drive shaft 23 at the center between the front and rear.
It is installed so that it can be rotated as a unit.

24 is a gear wedged on the planting drive shaft 23, 25 and 26 are counter gears, and 27 is an input sprocket.

28 is a bearing metal, and the vertical transmission case 18a, 1
8b, 18c, the planting drive shaft 23 is supported via a bearing, and the outer end hole 28a through which this shaft 23 is inserted is made eccentric with respect to the axis of the shaft 23. There is.

A sun gear 29 is provided integrally with a boss portion 29a that is inserted into the hole 28a of the bearing metal 28 and is prevented from rotating.
is a gear that is not a perfect circle with respect to the axis of the planting drive shaft 23.

Counter planetary gears 30, 30 are rotatably supported by the rotating cases 22a to 22e, and are always engaged with the sun gear 29.

31 is a planetary gear, and the rotating case 22a~
It is located on the distal end side of 22e and engages with the counter planetary gears 30, 30. This planetary gear 31 is provided with a cylindrical shaft 31a integral therewith, one end of which protrudes outward from the rotating case, and is configured such that the shaft can be inserted into the cylindrical shaft 31a.

A camshaft 32 is inserted into the cylindrical shaft 31a and crosses the inside of the rotating case 22, and one end of the camshaft is fixed to a rotation stop plate 33 that is fixed to the outer wall surface of the planted transmission case side of the rotating cases 22a to 22e. , the other end projects further outward than the cylinder shaft 31a.

Reference numeral 34 denotes a seedling planting tool, which is made up of a planting case body 35, a seedling extrusion operating cam 36, an interlocking rod 37, an extrusion shaft 38, a seedling separation claw 39, and the like. This planting case main body 35 is fitted onto a metal 60 that is fitted onto the outer circumference of the cylindrical shaft 31a that is integral with the planetary gear 31, and can be fixed by being moved slightly in the axial direction of the boss using a cotter pin 40. It is fixed with a bolt and is provided so as to be rotated integrally with this cylindrical shaft 31a.

And this metal 60 is the planting case body 3
It has a flange part 60b that integrally fixes a fitting part 60a inserted into the planting case body 35, and this flange part 60b and the planting case body 35 are fixed with bolts 61.

The seedling push-out operation cam 36 is formed by forming the tip of the cam shaft 32 into a square shaft and fitting the cam shaft 32 into a square shaft.
It is installed so that it rotates integrally with 2.

The interlocking rod 37 is rotatably received in the planting case 35 by a pin 41 at its front and rear intermediate portions, the base side is provided so as to correspond to the outer periphery of the cam 36, and the tip side is shaped like a fork. Note that the pin 41 is configured to be prevented from coming off on the inner surface of the flange portion 60b of the metal 60.

Reference numeral 38 denotes an extrusion shaft, which is supported on the tip side of the planting case 35 so as to be able to slide vertically, and its lower end protrudes outside the case.This lower end is formed into a seedling extrusion piece 38a, and the upper end side A portion of the outer periphery is cut into an oval shape, and the tip fork of the interlocking rod 37 is engaged here. 42 is a spring.

The seedling separation claw 39 is a claw having an ∩ shape when viewed from the front, and is detachably attached to the tip of the planting case 35.

As mentioned above, the seedling planting tool 34 is connected to the rotating case 22a.
Two plants are attached to each of the plants 22e and rotated so as to be operated while drawing a vertically long planting locus (i) when viewed from the side. Two seedling planting tools 34 provided in a single rotating case are set as one group, and in the illustrated example, A, B, C, D,
It is made up of E's seedling planting tools group.

43 is a drive shaft, which is installed in the planting transmission case 18 so as to be transmitted and rotated, extending in the horizontal direction;
Drive sprockets 44, 44, 44 are fixed to the root portions of the longitudinal transmission cases 18a, 18b, 18c, and are connected to the input sprocket 2 through a chain.
7, 27... are provided so as to rotate and transmit power to the planting drive shaft 23 side.

45 is a main seedling planting clutch, which is a drive clutch gear 4 with a clutch pawl that is transmitted and rotated from the prime mover side.
6 is rotatably attached to the drive shaft 43, and a vertically moving clutch body 47 with a clutch pawl and a fixed position stop cam 47a is movably provided on the drive clutch gear 46 in a wedged state to the drive shaft 43. A clutch pin 49 is elastically engaged toward the drive clutch gear 46 side and is slidably provided on the planting transmission case 18.
When the pin 49 is brought into contact with the cam surface 47a, the driven clutch body 47 escapes against the spring 48 due to the rotational force, and the clutch pawl is released. It is configured so that the rotation of the drive shaft 43 stops when it comes off. In the illustrated example, the number of fixed position stop cams 47a is divided into two on the outer circumferential surface of the rotation case, and
The number of seedling planting tools 34 that can be attached to one of the... is two.

It goes without saying that if three seedling planting tools 34 are provided in the rotating case 22, the number of fixed position stop cams 47a will be three.

A clutch wire 50 connects the planting clutch lever 14 and the clutch pin 49.

In the illustrated example, the main planting clutch 45 is provided inside the planting transmission case 18, but this is provided inside the main transmission case 8 to transmit power to the rice transplanter 13 side.
Of course, it is also possible to adopt a configuration in which the rotation of the PTO shaft 11 is stopped at a fixed position.

In the figure, 51 is a ground leveling float in the center, and 52 is a leveling float on both left and right sides.

To explain the operation of the above example, each seedling mounting table 19a~
When seedlings are placed on the 19e and each part is rotated by the engine 4, the passenger tractor 1 is propelled by the rotation of the front wheels 2 and rear wheels 3, and the rice transplanter 13 moves to the soil leveling float 51,
Part of the load was received by 52 and it was towed.
Power is transmitted from the PTO shaft 11 via the transmission shaft 12 to the input shaft in the planting transmission case 18 from the main transmission case 8 side. And main planting clutch 4
A drive shaft 43 is transmitted and rotated through the drive shaft 5, and from this drive shaft 43, the shafts 23, 23, . Then, each of the rotating cases 22a to 22e rotates, and with this rotation, the counter planetary gears 30, 30 are planetarily rotated around the sun gear 29, and the planetary gears 31, 31 meshing with the counter planetary gears 30, 30 are rotated. Therefore, the fixed planting case main body 35 is rotated with respect to the rotating cases 22a to 22e via the metal 60 fixed to the cylinder shaft 31a integral with the planetary gears 31, 31 with the cotter pin 40, and Camshafts 32, 3 integrated with rotating cases 22a to 22e
2 is not rotated by the gear 31 as a matter of course, so the planting case main body 35 is rotated by the sun gear 2 with respect to the pushing operation cam 36 fixed to the camshaft 32.
Due to the eccentric pitch circle of 9, it rotates while fluctuating the circumferential speed. Therefore, the interlocking rod 37
is swung by the cam 36, and the extrusion shaft 8 moves up and down.

Then, the tip side of the seedling separation claw 39 attached to the planting case main body 35 operates while drawing a planting trajectory A, and successively intervenes from above into the seedling dividing openings 21a to 21e of the seedling receiving plate 21, and moves left and right. The seedlings on the reciprocating seedling mounting tables 19a to 19e are divided into individual plants and planted on a field leveled by leveling floats 51 and 52. That is, when the seedling extrusion shaft 38 is located above the planting case 35, the seedling is divided from the seedling mounting table, and when the seedling is thrust into the field, the cam floor portion of the cam 36 and the interlocking rod 37 are separated. When the spring 42 is released, the seedling is rapidly pushed into the soil.

In this embodiment, the rotary case 35 has two
Since two seedling planting tools 34 are attached, seedlings can be planted at high speed.

When temporarily stopping for planting seedlings when turning, etc., operate the planting clutch lever 14 and push in the clutch pin 49 via the wire 50 to lock the cam surface of the fixed position stop cam 47a of the driven clutch 47. All you have to do is touch it. Then, the driven clutch 47 moves against the spring 48, and the driven clutch body 4 is moved from the clutch pawl of the drive clutch gear 46.
The clutch pawl 7 is disengaged and the rotation of the drive shaft 43 is stopped at that position.

At this time, since the fixed position stop cams 47a are provided in a number corresponding to the number of seedling planting tools 34 attached to one rotating case 35, when the planting clutch lever 14 is operated to the stop side, the Immediately, the seedling planting tool 34 is stopped and one rotating case 35 is opened.
Even though two seedling planting tools 34 are attached to the
This prevents unexpected situations such as seedlings being divided and planted from the seedling table.

The embodiment of the transmission configuration shown in FIG.
b, these planting drive shafts 23a, 23b are connected by an intermediate pin shaft that is inserted through the axis of the planting drive shaft and is rotatable, and a single clutch pawl that is in the same phase on the left and right is attached to this. A clutch sprocket 53 is provided.

A driven clutch body 5 having the same structure as the main seedling clutch 45 is attached to the planting drive shafts 23a, 23b on both the left and right sides of the clutch sprocket 53.
4 and 55 are provided to constitute sub-seedling planting clutches 56 and 56.

57a and 57b are subplant clutch pins.
And these sub-planting clutch pins 57a, 57b
. . . are five ridge clutch levers 58a, 28b provided on the upper back surface of the seedling table 19.
This clutch 56, which stops at a fixed position, is connected to the auxiliary seedling planting clutch 56 by wires 59, 59...
56 is provided so that it can be turned on and off.
Furthermore, fixed position stop cams 54a, which are provided on the driven clutch bodies 54, 55 of this secondary seedling planting clutch 56,
Two 54a, 55a, 55a are provided in the same way as the main seedling planting clutch 45. To explain the effect of this configuration, in general, when planting along the ridge, if the rice transplanter protrudes from the field or leaves unplanted plants when planting all the planting rows, the final planting In the first stage of the planting process, planting of some rows is stopped to ensure that there are no unplanted plants.

That is, the ridge clutch levers 58a, 58b...
In order to stop some of the seedling planting rows near the edge of the ridge, a suitable ridge clutch lever is operated and the sub-planting clutch pins 57a, 57b, . . . are pushed in.
Then, the main planting clutch 45 is operated in the same manner as described above, and the subsidiary seedling planting clutch 56 is turned off at the fixed position, and the rotating case 2 of the seedling planting tool 34 is turned off.
2a, 22b... are stopped, and planting can be stopped.

At this time, since the secondary seedling planting clutch 56 is also provided with the same number of fixed position stopping positions as the main seedling planting clutch 45 as the seedling planting tools 34 attached to the rotating case, the secondary seedling planting The rotation of the seedling planting tool 34 is stopped almost simultaneously with the cutting operation of the clutch 56, thereby preventing an unexpected situation in which the seedlings are divided and planted from the seedling mounting table after the stopping operation.

As explained above, the seedling planting tool 3 is attached to the rotating case 22.
4 is attached to the rotating case 22 side of the case body 35 into which the seedling push-out operation cam 36 provided in the planting case body 35 is installed.
A cylindrical shaft 31a that rotates integrally with the planetary gear 31 inside.
The operating cam 36 inside the planting case body 35 can be attached to and removed from the planting case body 35 while the metal 60 side is fixed to the rotating case 22 side. Or it becomes easier to disassemble.

[Brief explanation of drawings]

The figures show one embodiment of the present invention, in which Fig. 1 is a side view, Fig. 2 is a plan view of the main part, and Fig. 3 is a plan view of the main part.
The figure is a simplified slope view of the transmission mechanism, Figure 4 is a side sectional view of the main part, Figure 5 is a plan sectional view of the main part, Figure 6 is a partially cutaway plan view of the main part, and Figure 7 is the transmission mechanism. FIG. 3 is a simplified perspective view of the mechanism. Symbols in the figure include a rotating case 22, a planetary gear 31, a cylinder shaft 31a, a camshaft 32, a planting case body 35, an operating cam 36, and a metal 60.

Claims (1)

[Claims] 1. A camshaft 32 that is integrally attached to the rotating case 22 and protrudes outward across the inside of the rotating case 22, and the camshaft 32 inside the rotating case 22.
A rotating case 2 that is integral with the planetary gear 31 that is loosely fitted and rotated by transmission, and that rotates in the same direction as the camshaft 32.
A cylindrical shaft 31a protruding outward from the cylindrical shaft 31a is provided, and the planting case main body side is connected to the cylindrical shaft 31a, and the cam shaft 3
In the seedling planting device, the operating cam 36 of the seedling planting pushing device provided in the planting case body is attached to the planting case body 2, the metal 60 fixed to the cylindrical shaft 31a is fixed to the planting case body 35, and the metal 6 is attached to the planting case body 35.
The outer end of the seedling planting device is inserted into the planting case main body and substantially doubles as a lid on the removal side of the operating cam 36.