JPH052287B2 - - Google Patents

Description

[Detailed Description of the Invention] [Industrial Application Field] The present invention is used in a rotary seedling planting device such as a rice transplanter.

[Conventional technology]

In order to reduce vibration and speed up seedling transplantation, instead of a crank-type seedling planting device in which the middle part is rotated by a crank and the seedling separation claw at the tip moves back and forth up and down, a similar device is installed on the side of the rotating case. A rotary seedling planting device in which the seedling separation claw rotates in such a posture was published in Japanese Patent Application Laid-Open No. 1973-
Many proposals have been made in Publication No. 31773 and others.

[Problem to be solved by the invention]

In this rotary type as well, an operating cam is installed inside the main body of the planting case, and this cam moves the seedling extrusion piece up and down, opens and closes the left and right seedling separation claws, and removes one seedling into the muddy soil below. A configuration is adopted in which the two parts are separated. Here, in the conventional device, the planting case body is linked to the planetary gear by a shaft passing through the center of the operating cam fixed to the rotating case. Therefore, this shaft and the planting case main body are fixed on the outer surface of the planting case main body (the surface farthest from the rotating case).
The fixing device protrudes outward and rotates, which is dangerous.

This invention, on the contrary, attempts to eliminate the above-mentioned danger by passing the shaft to which the operating cam is fixed through the planetary gear.

[Means to solve the problem]

In order to solve the above problems, the present invention provides a sun gear 2 that does not rotate around the rotation center of the rotating case 22.
The planetary gear 31, which is integrated with the planting case body 35 of the seedling planting tool 34 and is arranged on the side of the rotating case 22, is linked to the sun gear 29. Seedling separation claw 3
9 rotates in the same posture, and the seedling separation claw 39 cuts off a group of seedlings on the seedling mounting table 19. The planting case main body 35 is fixed to the planetary gear 31, and the seedling separation claw 39 An operating cam 36 that moves the seedling pushing piece 38a up and down at the tip thereof is housed in the planting case body 35, and the cam shaft 3 integrated with this operating cam 36
2 passes through the center of the planetary gear 31 and attaches to the seedling planting tool 3.
A thin plate 33 is attached to the outer surface of the rotating case 22 on the opposite side from 4.
This seedling planting device is characterized in that it is fixed via a.

[Effect]

In this seedling planting device configured as described above, when the rotating case 22 rotates once, the planting case main body 3
5 or one rotation in a similar position, but the operating cam 3
6 is fixed to the rotating case 22 via the camshaft 32, so it rotates once relative to the planting case body 35. When the planting case body 35 rotates and the seedling separation claw 39 passes through the edge of the seedling mounting table 19 from top to bottom, the tip of the seedling separation claw 39 protrudes from the seedling mounting table 19. Cut off one end of a group of seedlings (pine seedlings) and hold it until it reaches the mud below, and then the above-mentioned operating cam 36
With this rotation, the seedling pushing piece 38a moves to the tip of the seedling separating claw 39, and the one seedling is inserted into the muddy soil.

〔effect〕

According to this invention, the planetary gear 31 in the rotating case 22 and the planting case main body 35 are fixed at a position where both are close to each other, and the planting case main body 35
Operating cam 36 and rotating case 2 housed within
The camshaft 32 and the planting case body 35 of the rotating case 22 are fixed to each other through the planetary gear 31.
Since this is done on the opposite wall, there is no need to protrude from the outside of the planting case body 35 for future fixing, eliminating the conventional danger. Furthermore, when fixing the camshaft 32 and the rotating case 22, the thin plate 33 fixed to the outer wall surface of the rotating case 22 and the camshaft 32 is used to fix the camshaft 32 and the camshaft 32. It can be firmly attached even with force, and even if the rotating case 22 is made of lightweight aluminum, there is no risk of rattling in the operating cam 36 and disturbing the planting posture of the seedlings.

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.

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.
The pitch circle is a gear that is not a perfect circle with respect to the axis A of the planting drive shaft 23.

Counter planetary gears 30, 30 are rotatably supported within 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 thin plate 33 that is fixed to the outer wall surface of the planting transmission case side of the rotating cases 22a to 22e, and The end protrudes outward beyond 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 designed to rotate together with 2.

The interlocking rod 37 is rotatably received in the planting case 35 by a pin 41 at the front and rear intermediate portions, the base side is provided so as to come into contact with the outer periphery of the cam 36, and the tip side is formed into a fork shape. 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. Then, 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 rotate the input sprockets 27, 27, . . . through a chain to drive the planting drive shaft 23 side. It is set up to transmit power.

45 is a main seedling planting clutch, and a drive clutch gear 4 with a clutch pawl is transmitted and rotated from the prime mover side.
6 is rotatably attached to the drive shaft 43, and a driven 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, and is driven by a spring 48. A clutch pin 49 is slidably provided on the planted transmission case 18 and is elastically engaged toward the clutch ear 46 side.
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 peripheral surface of the rotation, and the rotation cases 22a, 22b, . . .
2, which is the number of seedling planting tools 34 attached to one of the
It is made up of individuals.

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 the planting drive shafts 23, 23, . . . are rotated from this drive shaft 43 through sprockets, chains, etc. Then,
Each rotating case 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 rotation 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 Since the camshafts 32, 32 that are integral with the rotating cases 22a to 22e are not rotated by the gear 31, the push-out operation cam 36 fixed to the camshaft 32 is
On the other hand, the planting case main body 35 is rotated while the peripheral speed fluctuates due to the eccentric pitch circle of the sun gear 29. Therefore, the interlocking rod 37 is swung by the cam 36, and the extrusion shaft 38 is moved up and down.

Then, the tip side of the seedling separation claw 39 attached to the planting case 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 reciprocates left and right. Moving seedling table 1
The seedlings 9a to 19e are divided into individual plants and planted in 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.

[Brief explanation of the drawing]

Figure 1 is a side view of the rice transplanter according to the present invention, Figure 2 is a plan view of part of it, Figure 3 is a perspective view of part of its transmission mechanism, and Figure 4 is an enlarged view of part of it. FIG. 5 is a cutaway side view, FIG. 6 is a partially cutaway plan view showing the clutch,
FIG. 7 is a partial perspective view. Explanation of symbols, 19... Seedling mounting table, 22... Rotating case, 29... Sun gear, 31... Planetary gear, 32... Camshaft, 33... Thin plate, 34... Seedling planting tool, 35... ...Planting case body, 36... Operating cam, 38a... Seedling pushing piece, 39... Seedling separation claw.

Claims (1)

[Claims] 1. A non-rotating sun gear 29 is provided at the rotation center of the rotating case 22, and a planetary gear 31 integrated with the planting case body 35 of the seedling planting tool 34 arranged on the side of the rotating case 22 is linked to the sun gear 29. By doing so, the planting case main body 35 and the seedling separation claw 39 at the tip thereof rotate in the same posture, and the seedling separation claw 39 is a device for cutting off a group of seedlings on the seedling mounting table 19. The attached case body 35 is a planetary gear 31
The seedling pushing piece 3 is fixed at the tip of the seedling separating claw 39.
An operating cam 36 for raising and lowering the seedling planting tool 34 is housed in the planting case body 35, and a cam shaft 32 integrated with the operating cam 36 passes through the center of the planetary gear 31 and connects to the rotating case 22 on the opposite side from the seedling planting tool 34. A seedling planting device characterized in that the device is fixed to the outer surface of the device via a thin plate 33.