JPH0444009Y2 - - Google Patents

Description

[Detailed description of the invention] (a) Industrial application field The present invention relates to the arrangement structure of the shaft case and left and right transmission shaft cases of a walk-behind rice transplanter.

(B) Conventional technology Conventionally, as disclosed in Japanese Utility Model Application Publication No. 60-33824, etc., a walk-behind rice transplanter has been known to transmit power from a transmission section at the rear of the prime mover to a planting transmission case via a transmission shaft. The power is transmitted to the rotation mechanism of the planting claws through the transmission shaft that extends from the planting mechanism case in the left and right directions, and the necessary number of planting claws corresponding to the number of planting rows are transmitted. It is configured to rotate.

(c) Problems to be solved by the invention Therefore, the weight is biased toward the planting mechanism case, which has the transmission shaft case projecting from side to side.
Because there is a transmission shaft case that protrudes from the left and right sides of the planting mechanism case, a space is required between the wheels and the seedling stand to accommodate the transmission shaft case, and the space required for the seedling stand to be placed at the rear. As a result, the weight balance of the machine shifts to the rear, which has the disadvantage of making it difficult to balance the machine when planting seedlings on the seedling stand. Ta.

(d) Means for solving the problem Therefore, in the present invention, the seedling planting mechanism for the two inner rows is attached to the rear end of the shaft case that protrudes rearward from the rear surface of the transmission part, and The seedling planting mechanism is attached to the rear ends of the left and right transmission shaft cases that extend posterolaterally from the left and right sides of the planting section, so that multi-row planting can be performed. The present invention provides an arrangement structure of a shaft case and left and right transmission shaft cases of a walk-behind rice transplanter, in which the case and the case form a substantially triangular shape when viewed from the side.

(E) Function/Effect In this invention, a seedling planting mechanism for two rows is arranged inside a pair of wheels, and a seedling planting mechanism for other rows is arranged outside, and the outer seedling planting mechanism has a seedling part. Since the structure is configured to transmit power from the left and right transmission shaft cases that extend out from the lateral sides of the wheels, each seedling planting mechanism located between the inside and outside of the pair of wheels is arranged independently. Since there is no need to use a transmission mechanism between them, the weight of the planting mechanism is reduced.Furthermore, since there is no transmission case between the seedling planting mechanisms on the inside and outside of the wheel, it is possible to connect the seedling stand and the wheel. In addition, the left and right transmission shaft cases, which transmit power to the seedling mechanism on the outside of the wheels, protrude from the sides of the seedling section, making it possible to make the entire machine more compact. Since the right and left transmission shaft cases are extended to the attachment portions, the left and right transmission shaft cases act as a front load in front of the wheels, and have the effect of improving the overall weight balance of the aircraft body.

Moreover, since the shaft case and the left and right transmission shaft cases form a substantially triangular shape when viewed from the side, the shaft case and the left and right transmission shaft cases constitute a lightweight and highly rigid machine frame. As a result, the strength of the machine body is increased, and in particular, the strength against torsion of the machine body, which is likely to be swayed from side to side during planting travel, is increased, which has the effect of ensuring stable planting travel.

(F) Example The example of the present invention will be explained in detail based on the drawings.
FIG. 1 is a side view showing a four-row rice transplanter A, and FIG. 2 is a plan view.

A prime mover section 2 is mounted on the front part of the fuselage 1, and a transmission section 3 is provided behind it. A shaft case 4 protrudes directly behind from the lower rear surface, and from the upper left and right side surfaces of the transmission section 3 located below the lower end of the bonnet 2', there are separate approximately L-shaped left and right transmission shaft cases 5, 5' is distracted.

A planting mission case 6 is connected to the rear end of the shaft case 4, and a base end of a planting frame 7 is connected to the planting mission case 6. A handle 8 is attached to the upper end, and a seedling stand 10 with a low front and back height on which four rows of seedling pine can be placed is installed in a row in the middle, with a handle 8 attached to the upper end. ing.

The planting mechanism case 6 has inner left and right seedling planting mechanisms 11, 1 for the inner two rows among the four seedling planting mechanisms.
1' are consecutively provided.

Furthermore, the left and right transmission shaft cases 5, 5' connected to the left and right side surfaces of the transmission part 3 are connected to each other.
Left and right horizontally extending cases 12, 12' horizontally projecting outward from the left and right sides, and each horizontally extending case 12,
It is composed of left and right longitudinal cases 13, 13' which are successively arranged outward from the tips of the left and right longitudinal cases 12', and left and right planted gear cases 14, 14' are arranged in series at the rear ends of the left and right longitudinal cases 13, 13'. , the same gear case 14,
Outer left and right seedling planting mechanisms 15 and 15' for the outermost two rows of the four seedling planting mechanisms are connected to 14'.

In addition, the left and right longitudinal cases 13, 13' of the left and right transmission shaft cases 5, 5' are eight-shaped in plan view, inclined with a high front and low rear in side view, and are located on the same plane. There is.

Therefore, even if the machine body 1 rolls significantly during work, there is no risk that the left and right transmission shaft cases 5, 5' will come into contact with the field and be damaged, and also when the machine body 1 turns, etc. It is possible to prevent one of the inclined left and right transmission shaft cases 5, 5' from entering the field, and also
Side float 18,1 arranged below 5'
It is possible to secure a large vertical swing space of 8'.

Furthermore, the left and right longitudinal cases 13, 13' of the left and right transmission shaft cases 5, 5' are sloped with a high front and low rear in side view, and a shaft case 4 that protrudes rearward from the lower rear surface of the transmission part 3. , is configured to have a substantially triangular shape when viewed from the side.

Therefore, with this configuration, the machine frame structure of the machine body 1 can be made lightweight and highly rigid by the left and right transmission shaft cases 5, 5' and the shaft case 4, and the machine frame structure can be made lightweight and highly rigid. It is also possible to increase the strength.

FIG. 3 is an enlarged side view of the base end of the left power transmission shaft case 5, in which 5a is a connecting plate attached to the base end of the left horizontally projecting case 12, and 5b is a connecting plate. A plurality of long adjustment holes 5a are provided in a circular arc shape, and a plurality of long adjustment holes 5b are provided on the same circumference centered on the axis of the left horizontally projecting case 12.

The connecting plate 5a is connected to the left side surface of the mission part 3 so that its rotational position can be adjusted by means of fixing bolts 5c passed through the adjusting holes 5b. By adjusting the position,
The vertical movement position of the outer left seedling planting mechanism 15 attached to the tip of the left power transmission shaft case 5 can be adjusted.

In addition, the adjustment long hole 5b may have a large diameter that allows rotation adjustment of the connection plate 5a.

In addition, the right power transmission shaft case 5' is also the left power transmission shaft case 5'.
It is configured in the same way as .

Furthermore, the left and right transmission shaft cases 5, 5' are such that the base ends of the left and right horizontally projecting cases 12, 12' can be detachably attached to the upper left and right side surfaces of the transmission section 3.

Therefore, according to this configuration, since the vertical movement position of the left and right transmission shaft cases 5, 5' can be adjusted, the outer left and right seedling planting mechanisms 15 attached to the tips of both the transmission shaft cases 5, 5' , 15' can be adjusted vertically, and the height of the seedling planting mechanism 15, 15' can be adjusted to
Inner left and right seedling planting mechanisms 11, 1 maintained at a constant height
1', and the planting depth can be made uniform.

And detachable left and right transmission shaft cases 5, 5'
According to , the number of planting rows can be selected according to the work conditions, and when transporting the machine, by removing the left and right transmission shaft cases 5, 5', the machine can be made compact for mass transportation. It also has the convenience of being able to be easily stored in narrow barns and the like.

16 and 16' are staying cases that are interlocked on the left and right sides of the transmission part 3, and 17 and 17' are
are left and right wheels connected to the swing cases 16, 16', and 19 indicates a center float.

Moreover, among the seedling planting mechanisms for four rows, the inner left and right seedling planting mechanisms 11, 11' for the inner two rows are located inside the pair of left and right wheels 17, 17,
In addition, the outer left and right seedling planting mechanisms for the outer two rows 15, 1
5' is located outside the wheels 17, 17', and therefore the inner left and right seedling planting mechanisms 11, 11'
The planting claws 20, 20' in and the planting claws 21, 21' in the outer left and right seedling planting mechanisms 15, 15' are:
The power transmission paths from the transmission section 3 are different.

With such left and right transmission shaft cases 5, 5',
Planting claws 2 located on the outside of the left and right wheels 17, 17'
1, 21',
A walking rice transplanter with four rows is schematically shown in Figure 4.

In addition, in the case of a walk-behind rice transplanter with six rows, as shown in FIG. Two rows of planting claws are respectively attached to the left and right planting gear cases 14, 14' at the rear ends of the left and right transmission shaft cases 5, 5'.

That is, planting claws 21, 21' are installed inside the left and right planting gear cases 14, 14' in the same configuration as a four-row rice transplanter, and the outside of the left and right planting gear cases 14, 14' is similar to that of a four-row rice transplanter. For interlocking case 2
Seedling planting mechanism 22-1, 22'-1 via 2, 22'
The outermost planting claws 23, 23' are provided on the same seedling planting mechanism.
is installed to form a six-row rice transplanter.

The change from four-row planting to six-row planting may be carried out by replacing the left and right transmission shaft cases 5, 5' themselves, which are configured to be detachable.

In addition, in the figure, 24 is the output shaft of the prime mover section 2, and 25 is the output shaft of the prime mover section 2.
indicates a pulley, 26 indicates a belt, and 27 indicates a fuel tank.

[Brief explanation of the drawing]

Figure 1 is an overall side view of the four-row walking rice transplanter of the present invention. FIG. 2 is a plan view of the same. FIG. 3 is an enlarged side view of the base end of the left power transmission shaft case. Figures 4 and 5
The figure is a plan view of the main part. 1... Airframe, 2... Prime mover section, 3... Mission section, 4... Shaft case, 5, 5'... Left and right transmission shaft case, 6... Planted transmission case, 7
...Planting frame, 8...Handle, 9...Seedling stand support frame, 10...Seedling stand, 11, 11'
...Inner left and right seedling planting mechanism, 12, 12'...Left and right horizontal extending case, 13, 13'...Left and right longitudinal case, 14, 14'...Left and right planting gear case, 15,
15'...Outside left and right seedling planting mechanism, 16, 16'...Swing case, 17, 17'...Right and left wheels, 18,
18'... Side float, 19... Center float, 20, 20'... Planting claw, 21, 21'...
... Planting claw, 22, 22' ... Interlocking case, 23,
23'...Outermost planted nail.

Claims (1)

[Scope of utility model registration request] The seedling planting mechanisms 11 and 11' for the two inner rows are attached to the rear end of the shaft case 4 that protrudes rearward from the rear surface of the transmission part 3, and the seedling planting mechanisms 15 and 15' for the other outer rows are attached to the rear end of the shaft case 4 that projects rearward from the rear surface of the transmission section 3. The shaft case 4 and the left and right transmission shaft cases are attached to the rear ends of the left and right transmission shaft cases 5, 5' extending posterolaterally from the left and right side surfaces of the section 3 to enable multi-row planting. 15 and 15' constitute a substantially triangular shape in side view. This is an arrangement structure of a shaft case and left and right transmission shaft cases of a walk-behind rice transplanter.