JPH0335057Y2 - - Google Patents

Description

[Detailed explanation of the invention] (Field of industrial application) This invention relates to a seedling planting device for a rice transplanter that divides seedlings one by one from a seedling pine on a seedling stand and then plants them in the field. be.

(Prior art) As seen in Japanese Patent Publication No. 49-17807, in the rotary planting device of a conventional rice transplanter, the cam shaft for opening and closing the claws is fitted onto the claw shaft that supports the planting claw case. The rotor is fixed to the sous. Therefore, since there is no bearing member such as a so-called ball bearing between the pawl opening/closing camshaft and the rotor case, a highly airtight structure is adopted.

(Problem to be solved by the invention) However, in the case of a rotary planting device in which the planting claw case supporting member is fitted externally to the claw driving cam, the gap between the planting claw case supporting member and the rotor case is A bearing member is required, and in this case, there is a drawback that mud scattered by the planting claws adheres to the bearing member, making it impossible to withstand long-term operation.

Therefore, the object of the present invention is to provide a planting claw case support device for a rice transplanter that does not allow mud to enter into the supporting portion even if mud adheres to the supporting portion of the planting claw case relative to the rotor case. It is.

(Means for Solving the Problems) In order to achieve the above objects, the present invention provides the following planting claw case support device for a rice transplanter.

That is, a rotor case is fixed to a rotating shaft through which power is transmitted from a power source, and a rotor case is attached to the rotor case at an appropriate distance in the radial direction from the rotating shaft to which the rotor case is attached, and in the rotational circumferential direction of the rotor case. A camshaft is provided at equally divided locations, and a planting claw case support member is fitted onto the camshaft so as to rotate once in the direction opposite to the rotational direction of the rotor case during one rotation of the rotor case. In a planting claw case support device for a rice transplanter in which a planting claw case is provided in a planting claw case support member, a flange is provided on the planting claw case support member interlockingly connected to a drive mechanism in the rotor case, and the flange is provided with a flange. It is disposed close to and opposite to the lid of the bearing in the rotor case that supports the planting claw case support member, and has a diameter larger than that of the lid.

(Example) First, I will explain the entire riding rice transplanter.

Reference numeral 1 shown in FIGS. 16 and 17 is a passenger vehicle body, and a planting portion 3 is connected to the rear portion of the passenger vehicle body 1 via a lift mechanism 2.

In the passenger vehicle body 1, a transmission case 5 is attached to the rear of a vehicle body frame 4, an engine 6 is mounted on the vehicle body frame 4, and a front wheel 7 is mounted below the engine 6.
There is.

Further, there is a transmission case 8 facing rearward from both left and right sides of the transmission case 5.

A rear wheel 9 is provided at the rear end of the transmission case 8 . 10 is a driver's seat, 11 is a footrest, and 12 is a running handle.

A top link 14 and a lower link 15 are attached to the lift mechanism 2, and the planting section 3 is raised and lowered by swinging the links 14 and 15 by the expansion and contraction of a hydraulic cylinder (not shown).

In the figure, reference numeral 16 indicates a mounting bracket for the link of the hydraulic cylinder.

The planting section 3 consists of a seedling stand 18, a float 19, and a transmission case 20.

21 is a marker, and 22 is a float lift lever.

The seedling planting device of the rice transplanter as described above will be described in more detail as follows.

What is shown in FIGS. 1 to 13 is a forced extrusion claw, and the transmission shaft shown in FIG. 1, that is, the input shaft 2.
3 is rotatable with respect to the planting transmission case 20.

However, there is an upper stop device in which the unit clutch for stopping the row is disengaged at one or more points per revolution.

A sun gear 24 is loosely fitted onto the transmission shaft 23.

However, it is fixed to the planting transmission case 20 via the sun gear phase adjustment member 25.

The member 25 has a kerf 25c on the end boss 25b of the fan-shaped arm 25a as shown in FIGS. 10 and 11, and a kerf 24a matching the kerf 25c is formed on the sun gear 24 as shown in FIG. Atsuteki groove 25c,
24a by changing the matching position of these grooves 25.
The relative position of the sun gear 24 with respect to the planting transmission case 20 is determined by inserting the key 56 over the sections c and 24a, and inserting the bolt 27 into the arcuate slit groove 26 in the fan-shaped part of the arm 25a to fix it to the planting transmission case 20. can now be changed.

Although a plurality of cut grooves 25c are shown in the figure, only one cut groove 25c may be used for phase matching. A hollow two-split rotor case 28 is mounted on the end of the transmission shaft 23, and the rotor case 28 is attached to the transmission shaft 23 by adjusting its position in relation to the upper stop device of the planting claw. It is fixed to the transmission shaft 23 with a bolt 29. The end of the transmission shaft 23 is configured to have a square shape, which is adapted to fit into a square hole 28a of the rotor case 28.

The rotor case 28 as a rotating body is rotatably provided with intermediate gears 30, 30 that mesh with the sun gear 24 and have the same number of teeth as the sun gear 24 through an intermediate shaft 31, and can be used as a planting shaft. camshaft 32
A planetary gear 33 having the same number of teeth as the sun gear 24, which is always in mesh with the intermediate gear 30 on the intermediate shaft 31, is fitted onto the upper part via a support member which will be described later.

These include sun gear 24, intermediate gear 30, and planetary gear 3.
3 is the appropriate dimension e from the center of rotation as shown in Figure 14.
It is an eccentric gear.

The camshaft 32 is also attached to the rotor case 28 via a position adjustment member 34 shown in FIGS. 1, 7, 12, and 13.

The member 34 is attached to the camshaft 32 and bolts 35
is fixed to the rotor case 28. Then, the bolt 35 is inserted into a slit groove 36 provided in the member 34 so that the member 34 can rotate.

Further, the camshaft 32 is provided with a support member 3 as shown in FIGS.
7 is fitted onto the outside, and a planting claw case 38 and the planetary gear 33 described above are fixed to this support member 37.

By adjusting the position adjustment member 34 as described above, the extrusion timing of the extrusion claw 46 is changed.

Numeral 39 is a bolt that fixes the planting claw case 38 to the support member 37, and the bolt hole 60 of the planting claw case
A bearing 40 is inserted between the support member 37 and the camshaft 32 .

A cam 41 is provided on the cam shaft 32, and a push rod, which will be described later, is driven from a push arm 42 in contact with this cam 41 via an intermediate shaft 57, and a spring 43 is located at the intersection of the push rods. Specifically, there is a cushion rubber 44.

Therefore, the push arm 42 is connected to the spring 4.
3, and cushioned against the planting claw case 38 by the cushion rubber 44.

Here, the structure of the push-out claw portion will be explained in more detail based on FIGS. 3 to 6. The push arm 42 is pivotally supported by a shaft 48, and the end portion 42a is
Touch 1.

A receiver 49 having an inverted concave cross section is swingably fitted onto the upper surface of the tip 42b of the push arm 42, and a spring 43 is in contact with the receiver 49.

Further, a cushion rubber 44 is attached to the tip of the push arm 42. Specifically, the cushion rubber 44 is fixed to an intermediate shaft 57 arranged in an L-shape at the tip of the push arm 42, and the push rod 47 is operated from the intermediate shaft 57 via a relay fitting 61.

45 is a planted nail, 46 is an extruded nail,
The push-out pawl 46 is pushed out by a push rod 47 driven by the push arm 42.

Now, when the rotor case 28 as a rotating body rotates in the direction of arrow A as shown in FIG. 30 rotates in the direction of arrow B as the rotor case 28 rotates.

The planting pawl case support member 37 interlocked with the intermediate gear 30 via the planetary gear 33 moves in the direction of arrow C, that is, the rotor case 28, due to the rotation of the intermediate gear 30.
It rotates in the opposite direction to the direction of rotation.

By the way, as shown in FIG. 14, the sun gear 24, the intermediate gear 30, and the planetary gear 33 are all configured as eccentric gears that are eccentric by an amount e, so that as the rotor case 28 rotates in the direction of the arrow A, the support member 37
revolves, and the accompanying rotation of the supporting member 37 itself in the C direction causes the eccentric gears 24,
The rotational speed of the rotor case 28 is configured to be faster or slower than the rotational speed of the rotor case 28 due to the difference in the engagement pitch radius with respect to the rotational axis in each engagement. Therefore, the time when the rotation of the planting claw case 38 in the C direction becomes slower than the rotation of the rotor case 28 is
At the time when the planting claw case 38 descends from the seedling collecting position to approach the field scene, the planting claw case 3
By setting the time when the rotation in the C direction of 8 becomes faster to be closer to the upper limit of the rise of the planting case 38, which corresponds to the time when the planting case 38 rises from the planting position, each planting claw case 38 can be moved in the field. When descending to approach the upper limit of the rise, the rotor case 28 rotates slowly and slowly in the C direction with a lag behind the rotation of the rotor case 28, changing its attitude downward due to revolution, and after planting, the rotor case 28 rotates as it ascends to approach the upper limit of the rise. Since the claw moves further in the C direction than the previous one, it rotates on its own axis and changes its posture upward, so the closed loop of the movement locus of the claw tip is curved on one side, while the other is a curve that is closer to a straight line, as shown in Fig. 15.

Furthermore, as shown in Fig. 14, if the phase position of the sun gear is shifted from position D to position E by θ' in the direction opposite to the rotational direction of the rotor case, the eccentric position changes, so the position of the reference line is changed. The planting trajectory is the first
As shown in FIG. 5, the movement trajectory of the planted nail is shifted from the movement trajectory X before displacement to X'.

Furthermore, when the phase position of the sun gear is displaced from the D position to the F position by an angle θ'' in the same direction as the rotational direction of the rotor case, the motion trajectory of the planting claw case changes as shown by the dashed line before the displacement. movement trajectory of
Shifts to X″.

The above-mentioned changes in the movement locus can adjust the amount of seedlings taken out; the X'' position is when the amount of seedlings taken out is small, and the X' position is when the amount of seedlings taken out is large.

As described above, the inverted concave spring receiver 49 is swingably fitted onto the outer surface of the tip projection 42b of the swing lever such as the push arm 42, and the spring 43 is interposed between both bent ends of the receiver 49 and the case 38. As a result, the spring receiver 49, which has an inverted concave cross section and is fitted onto the protrusion 42b of the push arm 42, which is a swing lever, swings in the spring biasing direction.

With this configuration, the spring 43 does not bend left or right, and the spring does not fall or buckle.

In addition, in FIG. 6, 49a indicates the support point of the spring in the receiver 49, and 49b indicates the side surface of the receiver 49.

Further, the spring receiver 49 can also have the shape shown in FIG. 6E.

The present invention is particularly designed for the planting claw case support device in the rice transplanter as described above.

That is, the support member 37 mentioned above supports the planting nail case, which is rotatably supported by a bearing 63 inside the rotor case 28 as shown in FIG. It is sealed from The support member 37 is provided with a flange 64, to which the planting claw case 38 is fixed with bolts 39, whereby the rotor case 2 of the planting claw case 38 is fixed to the flange 64.
In addition, the flange 64 is arranged close to and facing the lid member, has a diameter larger than the lid member 62, and is configured to cover the lid member 62 from the side.

Therefore, the bearing 63 is not only sealed by the lid 62, but also covered by the flange 64, which increases the sealing effect of the bearing 63 and makes it durable for long-term use.

In addition, although the planetary gear device is shown in the embodiment, transmission within the rotor case may be performed by chain transmission using an eccentric sprocket and a chain.

(Effect of the invention) A rotor case is fixed to a rotating shaft through which power is transmitted from a power source, and a rotor case is attached at a position an appropriate distance in the radial direction from the rotating shaft to which the rotor case is attached, and the rotation of the rotor case is fixed. camshafts are provided at equally spaced positions in the circumferential direction, and a planting claw case support member is fitted onto the camshaft so as to rotate once in a direction opposite to the rotational direction of the rotor case during one rotation of the rotor case; In the planting claw case support device for a rice transplanter, the planting claw case support member is provided with a planting claw case, and the planting claw case support member is provided with a flange, Since the flange is arranged close to and opposite to the lid of the bearing in the rotor case that supports the planted claw case supporting member, and is made larger than the diameter of the lid material, the flange covers the lid material from the side. The bearing is not only sealed with a cover material, but also protected with a flange, so that it can withstand long-term use without mud entering the bearing.

[Brief explanation of the drawing]

Figure 1 is a cutaway plan view of the forced extrusion claw, Figure 2 is a cutaway plan view of the forced extrusion claw;
The figure is a side view of the same as above, Fig. 3 is a partially cutaway side view of the planting claw case attached to the forced extrusion claw, and Fig. 4 I to E are cutaway plan views of the planting claw case attached to the forced extrusion claw, and the relay metal fittings. Front view and side view, front view and side view of the cushion rubber, Fig. 5 is a side view of the planting claw case subjected to forced extrusion, Fig. 6 I to H are a partially cutaway side view of the same as above, a plan view of the washer, and the front. Figure 7 is an enlarged cross-sectional view of Figure 1, and Figure 8 is a side view and a slope view of a modified example.
The figure is an oblique view of the sun gear part, Figure 9 is a rear view of the forced extrusion pawl, Figure 10 is a plan view of the sun gear phase adjustment member, Figure 11 is a cross-sectional view of the same as above, and Figure 12 is the camshaft phase. FIG. 13 is a plan view of the adjustment member, FIG. 13 is a cross-sectional view of the same as above, FIGS. 14 and 15 are explanatory views showing the operating state of the gears of the rotor case, and FIGS. 16 and 17 are a front view and a plan view of the rice transplanter. 18... Seedling stand, 19... Float, 20...
Planted transmission case, 23... Transmission shaft, 24... Sun gear, 25... Sun gear phase adjustment member, 28...
Rotor case, 30... Intermediate gear, 32... Camshaft, 33... Planetary gear, 34... Camshaft phase adjustment member, 37... Planting claw case support member, 41...
...Cam, 42... Push arm, 43... Spring, 46... Push-out claw, 47... Push rod, 49... Receiver, 49a... Spring support point of receiver, 62... Lid material, 63... Support Bearing of member, 64...Flange of supporting member.

Claims (1)

[Scope of utility model registration request] A rotor case is fixed to a rotating shaft through which power is transmitted from a power source, and the rotor case is fixed to the rotor case at an appropriate distance in the radial direction from the rotating shaft to which the rotor case is attached. A camshaft is provided at each location, and a planting claw case support member is fitted onto the camshaft so that it rotates once in the direction opposite to the rotational direction of the rotor case during one rotation of the rotor case, and the planting claw case In a planting claw case support device for a rice transplanter in which a support member is provided with a planting claw case, a flange is provided on the planting claw case support member that is interlocked and connected to a drive mechanism in the rotor case, and the flange is attached to the planting claw case. A planting claw case support device for a rice transplanter, which is disposed close to and facing a lid of a bearing in the rotor case that supports a claw case support member, and is larger in diameter than the lid member.