JPH1033028A - Power transmission gear in sulky type transplanter - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a power transmission gear capable of not only smoothly transmitting power from a traveling machine body side to a planting operation part and reducing its cost by decrease in the number of parts, simplification of structure, lightening in weight of a machine body in a sulky type transplanter equipped with a cross-feeding mechanism for a seedling placing stand. SOLUTION: A power distributing shaft 8 for distributing the power of a planting part of an input shaft 7 for transmitting power from a traveling machine body side to a planting mechanism and a cross-feeding shaft 14 of a seedling placing stand 3 is inserted into a drive case 6. On the other hand, the cross-feeding shaft 14 is in an exposed state out of the drive case 6 and is installed in parallel with and apart from the power distributing shaft 8 in the vertical direction and one end of the cross-feeding shaft 14 is supported by a cross-feeding changing case 15.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a power transmission for a riding type transplanter.

[0002]

2. Description of the Related Art Conventionally, in this kind of transplantation machine, a rotation-restricting slide piece around a shaft center is externally fitted on a lateral feed shaft having a spiral feed groove formed on the outer periphery. The seedling table is laterally fed by reciprocating left and right movement of the slide piece accompanying rotation of the horizontal feed shaft. Therefore, the power transmission from the power distribution shaft to the horizontal feed shaft is configured to be performed via an intermediate shaft such as a vertical feed shaft, so that the power transmission may not be smooth or the number of parts may increase and the structure may be complicated. As a result, the power distribution shaft and the traverse feed shaft are disposed apart from each other, and there is a disadvantage that the case body for inserting the intermediate shaft and the like becomes large and the weight of the machine body increases. Was.

[0003]

SUMMARY OF THE INVENTION The present invention has been conceived in view of the above-mentioned circumstances, and has as its object to provide a power transmission device in a riding type implanter which can eliminate these disadvantages. The planting work section is connected to the traveling body of the riding type transplanter so as to be able to move up and down, and the planting work section is provided with a spiral feed groove formed on the outer periphery thereof. In a riding type transplanter, a regulated slide piece is screwed into an outer fitting shape, and a seedling table is laterally fed based on reciprocal movement of the slide piece with left and right reciprocation accompanying rotation of a transverse feed shaft, wherein the traveling machine body side The power distribution shaft that distributes the power of the planting portion of the input shaft that transmits power to the planting mechanism and the transverse feed shaft is inserted into the drive case, while the transverse feed shaft is exposed from the drive case to the power distribution shaft. Along with being vertically spaced apart and parallel, One end of the feed shaft, is characterized in that supported in the lateral feed conversion case for power transmission with respect to one end of the horizontal feed axis from one end of the power distribution shaft. According to the present invention, with this configuration, power from the traveling body can be smoothly transmitted to the planting work section, and the cost can be reduced by reducing the number of parts, simplifying the structure, and reducing the weight of the body. It is made possible.

[0004]

Next, an embodiment of the present invention will be described with reference to the drawings. In the drawings, reference numeral 1 denotes a planting work unit which is connected to the rear of the traveling machine body of a riding type rice transplanter so as to be able to move up and down. A seedling mounting table 3 that is freely supported, a planting arm 4 that scrapes unit planted seedlings from the lower end of the seedling mounting table 3 to plant on a rice field surface, and a float that is provided at the lower end of the working unit frame 2 so as to be vertically swingable. 5 and the like, all of which are conventional.

Reference numeral 6 denotes a drive case fixed to the upper end of the working unit frame 2 in the left-right direction. The drive case 6 supports an input shaft 7 extending in the front-rear direction. The power distribution shaft 8 is inserted in the left-right direction. The input shaft 7 receives engine power from the traveling machine body via a drive shaft (not shown), and transmits the input power via a bevel gear transmission 9 to a power distribution shaft 8.
To be transmitted to.

Reference numeral 10 denotes a planter case which is assembled to the left and right ends of the drive case 6. A left and right planter shaft 11 is supported at the rear end of the left and right planter cases 10, 10 in a penetrating manner. The planting arm 4 is assembled to the left and right projecting ends of each planter shaft 11 to form a four-row planting mechanism. The planting arm 4 is planted by the power transmitted from the sprockets 12 provided at the left and right ends of the power distribution shaft 8 to the planter shaft 11 via the transmission chain 13.

On the other hand, 14 is a spiral feed groove 14a on the outer periphery.
Are formed, and the transverse feed shaft 14 is disposed in parallel with the power distribution shaft 8 while being exposed from the drive case 6 so as to be spaced apart in the vertical direction. In other words, the traverse feed shaft 14 includes a boss 6a integrally projecting from the left end of the drive case 6 and a traverse conversion case 15 assembled to the right end of the drive case 6 via the planter case 10. It is pivoted between.

In the transverse feed conversion case 15, the right end of the power distribution shaft 8 penetrating the right planter case 10 and the right end of the transverse feed shaft 14 are provided. Power transmission to 14 is performed,
The power distribution shaft 8 is configured to transmit power directly to the transverse feed shaft 14 by the transmission chain 16 without passing through an intermediate shaft such as a vertical feed shaft as in the related art. In addition, 17
And 18 are first and second conversion sprockets around which the transmission chain 16 is suspended. Each of the conversion sprockets 17 and 18 is connected to the right end of the power distribution shaft 8 and the transverse feed shaft 14.
The sprockets 17 and 18 are replaced with ones having different numbers of teeth to convert the lateral feed amount of the seedling mounting table 3 described later. I can do it.
Reference numeral 19 denotes a cover that closes the opening of the lateral feed conversion case 15.

Further, reference numeral 20 denotes a slide piece which meshes with the lateral feed shaft 14 so as to be fitted externally. The slide piece 20 is connected to the seedling mounting table 3 by a connecting plate 21 without passing through a slide bar as in the prior art. Directly connected. And the slide piece 20 whose rotation is restricted is
The seedling mounting table 3 is laterally fed based on the reciprocating movement of the lateral feed shaft 14 in one direction. Reference numeral 22 denotes an elastic bellows boot that covers the transverse feed shaft 14.

Reference numeral 23 denotes a vertical feed mechanism provided on the seedling mounting table 3. The vertical feed mechanism 23 includes a pair of upper and lower rollers 24, 24, a belt 25 suspended between them, and a lower roller. The feed lever 26 is connected to the feed lever 24 via a ratchet mechanism (not shown) for restricting reverse feed, and the seedling contact surface of the belt 25 is lowered by a predetermined amount as the feed lever 26 is pushed up. Seedling stand 3
A vertical feed lever for intermittently pushing up the feed lever 26 every time the seedling mounting table 3 reaches the moving end of one stroke. Numeral 27 is attached to the left end of the lateral feed shaft 14 so as to be rotatable integrally. That is, the horizontal feed shaft 14 is also used as the vertical feed lever shaft without providing a particularly vertical feed lever shaft as in the related art.

In the embodiment of the present invention configured as described above, the seedling mounting table 3 is laterally fed based on the reciprocating left and right movement of the slide piece 20 accompanying the one-way rotation of the lateral feed shaft 14. The power of the traverse shaft 14 is directly transmitted from the motive power distribution shaft 8 in the drive case 6 disposed in parallel with the traverse shaft 14 at a distance from the traverse shaft 14 without an intermediate shaft. become. Therefore, not only can the power from the traveling body be smoothly transmitted to the planting work section, but also the need for an intermediate shaft, which is conventionally provided, is eliminated, thereby reducing the number of parts, simplifying the structure and reducing the cost by reducing the weight of the device. Can be achieved. Also, with the improvement of transmission efficiency, there is no deviation between the horizontal feed timing and the planting timing, and there is no deviation between the vertical feed timing and the planting timing of the planted seedlings linked to the horizontal feed, and the planting accuracy is improved. Can also be achieved.

Further, the transverse feed shaft 14 is disposed in parallel with the drive case 6 so as to be exposed and separated above the drive case 6 without being inserted and supported in the case body. A boss portion 6a integrally protruded from the left end of the drive case 6 without being supported by a dedicated shaft support member, and a lateral feed mounted to the right end of the drive case 6 via a planter case 10. Since it is pivotally supported between the conversion case 15, the number of parts can be greatly reduced by sharing the parts.

Further, since the slide piece 20 is directly connected to the seedling mounting table 3 by the connection plate 21 without using a slide bar as in the conventional case, the number of parts is further reduced to simplify the structure and to reduce the number of parts. The weight of the fuselage can be reduced.

[0014]

In summary, since the present invention is constructed as described above, the power of the planting portion from the traveling machine body is parallel to the lateral feed shaft 14 via the input shaft 7 while being vertically separated from the lateral feed shaft 14. Directly transmitted to the arranged power distribution shaft 8,
The seedling mounting table 3 can be laterally fed based on the reciprocating left and right movement of the slide piece 20 that is screwed into the outside. Moreover, one end of the traverse shaft 14 is supported by a traverse conversion case 15 for transmitting the power of the traverse shaft 14. Therefore,
The drive case 6 does not require the transverse feed shaft 14 to be interpolated, thereby reducing the size and weight. On the other hand, one end of the transverse feed shaft 14 exposed from the drive case 6 transmits power to the transverse feed shaft 14. As a result, the traverse conversion case 15 is also used as a support member at one end of the traverse shaft 14, so that a dedicated support member is unnecessary and the number of parts is reduced. The cost can be reduced by simplifying the structure and reducing the weight of the body.

[Brief description of the drawings]

FIG. 1 is a side view of a planting work section.

FIG. 2 is a rear view of the same.

FIG. 3 is a rear view of a main part of the same.

FIG. 4 is a sectional view of a main part of a transverse feed shaft.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 Planting work part 3 Seedling stand 6 Drive case 7 Input shaft 8 Power distribution shaft 10 Planter case 14 Horizontal feed shaft 15 Horizontal feed conversion case 17 First conversion sprocket 18 Second conversion sprocket 20 Slide piece 23 Vertical feed mechanism 27 Vertical Feed lever

Claims (1)

[Claims] 1. A planting work section 1 on a traveling body of a riding type transplanter.
And a slide piece 20 whose rotation around the axis is restricted is fitted on a lateral feed shaft 14 having a spiral feed groove 14a formed on the outer periphery of the planting work section 1. An input shaft for transmitting power from the traveling machine side in a riding type transplanter in which the seedling table 3 is laterally fed based on the reciprocating left and right movement of the slide piece 20 accompanying the rotation of the horizontal feed shaft 14. The power distribution shaft 8 for distributing the power of the planting portion 7 to the planting mechanism and the traverse feed shaft 14 is inserted into the drive case 6, while the traverse feed shaft 14 is exposed from the drive case 6. And one end of the traverse shaft 14 is supported by a traverse conversion case 15 for transmitting power from one end of the power distribution shaft 8 to one end of the traverse shaft 14. Power transmission device for riding type transplanter characterized by the following .