JPH06133613A - Longitudinal feed driving structure for seedling planting device - Google Patents

Abstract

PURPOSE:To provide a structure designed to simplify transmission structure and miniaturize a feedcase by devising the structure of a planting transmission mechanism to omit an exclusive driving shaft while maintaining conventional longitudinal feed driving function. CONSTITUTION:In the structure where a feedcase 5 is equipped with (A) a transverse feed speed change mechanism ranging over a transverse shaft and a branch transmission shaft bevelinterlocked with an input shaft 4 and (B) a planting transmission shaft interlocked with the branch transmission shaft and driving the planting input shaft 12 for plural planting cases 6 along the identical revolving shaft center, the planting input shaft 12 is fitted with such an operating arm 11 making a kick driving of an arm 21 to be operated, fitted at the lower shaft 20 of a longitudinal feed mechanism 8, only at the transverse feed stroke end of a seedling stage 7.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a drive structure for temporarily driving a vertical feed mechanism at a horizontal feed stroke end of a seedling table.

[0002]

2. Description of the Related Art A conventional vertical feed drive structure is an actual flat type 4-7.
As shown in Japanese Patent No. 4916, the operating arm attached to the vertical feed drive shaft (the shaft indicated by reference numeral 24 in the drawings of the above publication) kicks up and rocks the operated arm of the vertical feed shaft on the seedling placing table side. By providing a dedicated drive shaft, the vertical feed driving force at the stroke end of the horizontal feed can be satisfactorily transmitted.

[0003]

However, it is disadvantageous in terms of simplification of the power transmission structure to provide a dedicated shaft and a power transmission mechanism for the shaft only for the purpose of temporarily driving the longitudinal feed. It seems that the transmission mechanism is unnecessarily increased in size. The present invention, by devising the structure of the planted transmission mechanism,
It is an object of the present invention to simplify by omitting a dedicated drive shaft while maintaining the conventional vertical feed drive function.

[0004]

In order to achieve the above-mentioned object, the present invention provides a transverse feed transmission mechanism extending across a branch transmission shaft and a transverse feed shaft which are interlocked with a front and rear input shaft by a bevel gear, and a branch transmission shaft. In a vertical feed drive structure of a seedling planting device, the feed case is equipped with a planting transmission shaft that is transmission-coupled and that drives the planting input shafts of a plurality of planting cases on the same rotation axis. The operated arm is attached to the vertical feed shaft of the table via a one-way clutch, and the vertical feed shaft is rotated by a predetermined amount by contacting the operated arm only at the end of the horizontal feed stroke of the seedling table. It is characterized in that an operating arm to be attached is attached to the planted input shaft.

[0005]

The above-mentioned characteristic structure is means for omitting a dedicated drive shaft by providing an operation arm on the axis of the planted transmission shaft which is an essential shaft in the planted transmission mechanism. That is,
The same as the planted transmission shaft is provided at a location indicated by reference numeral 30 in FIG. 4 of the above-mentioned official gazette (Actual Publication No. 4-74916), that is, a location located below the dedicated vertical feed drive shaft (reference numeral 24). It has been found that there is a planted input shaft that is linked and linked on the axis, and the relative positional relationship between this planted input shaft and the vertical feed shaft of the seedling mounting table is the inter-axis distance that can configure the vertical feed mechanism. It was done. Therefore, although it is necessary to extend the planted input shaft in the left-right direction or newly create an operating arm and an operated arm, it is possible to omit the dedicated drive shaft and the power transmission mechanism to that shaft, and to feed It is possible to make the case compact and simplify the transmission structure.

[0006]

As a result, by considering that the vertical feed shaft of the seedling table is intermittently driven by the planted input shaft, the feed case can be made compact and the transmission structure can be simplified by omitting the dedicated vertical feed drive shafts. It was possible to provide a vertical feed drive structure capable of realizing the above-mentioned, without any hindrance to the function of the vertical feed mechanism.

[0007]

Embodiments of the present invention will be described below with reference to the drawings. FIG. 1 shows the rear part of the riding type rice transplanter, 1 is a link mechanism for connecting the planting part 2 to a traveling machine body (not shown) so as to be able to move up and down, 3 is a planting mechanism, 4N is a PTO shaft, 5 is a feed case, 6 Is a planting case, 7 is a seedling mounting table, 8 is a vertical seedling feeding mechanism, 9 is a leveling float, and a horizontally long frame in which the feed case 5 and a plurality of planting cases 6 are connected horizontally across the rear end of the link mechanism 1. They are connected and supported by F respectively. The transmission structure of the planting device 2 is shown in FIGS. 2 to 4, and the branch transmission shaft 10 interlocked with the bevel gear from the input shaft 4 interlocked with the PTO shaft 4N and the plant interlocked with the branch transmission shaft 10 in a chain. A transmission shaft 13 and a lateral feed shaft 14 in which a spiral groove 15 is engraved are supported by the feed case 5, and a four-stage lateral feed transmission mechanism A, which is gear-shifted by rotating a knob 17, is branched and transmitted. It is configured so as to extend over the shaft 10 and the lateral feed shaft 14. A boss portion 29 with a protruding piece 29a that engages with the spiral groove 15
Is provided on the operation member 7a protruding from the seedling placing table 7, and the seedling placing table 7 is driven to reciprocate laterally with the rotation of the lateral feed shaft 14.

As shown in FIG. 2, the planted transmission shaft 13 has:
The planting input shafts 12 of the plurality of planting cases 6 are coupled with each other on the same rotation axis P, and a pair of operation arms 11 and 11 are attached to the planting input shaft 12.
On the other hand, the seedling vertical feed mechanism 8 is configured by winding the belt 19 around the upper and lower wheels 16 and 18, and the vertical feed shaft 20 supporting the lower wheel 18 is provided with a one-way clutch 22 via an operated arm. 21 is attached. That is, the operating arm 11 kicks up the operated arm 21 to rotate the vertical feed shaft 20 by a predetermined amount only at the end of the lateral feeding stroke of the seedling placing table 7, thereby forcibly and intermittently loading the loaded seedling. It moves vertically.

As shown in FIG. 5, a push-out tool 24 that pushes the planting claw 23 is constructed by screwing a push rod 25 and a tip end portion 26. While the push rod 25 has a shaft diameter of φ8, the outer diameter of the screw portion 25a of the M8 is formed to be φ7.5, and the dust seal 27 and the bush 28 are attached to the screw portion 25a when the push rod 25 is mounted. The damage caused by the contact with is kept as small as possible.

It should be noted that although reference numerals are given in the claims for convenience of comparison with the drawings, the present invention is not limited to the structures of the accompanying drawings by the entry.

[Brief description of drawings]

FIG. 1 is a side view showing a planting device.

FIG. 2 is a plan view showing a lateral feed transmission structure of a seedling table.

FIG. 3 is a partially cutaway enlarged view showing a main part of a lateral feed structure.

FIG. 4 is a sectional view showing a transmission structure inside a feed case.

FIG. 5 is a sectional view showing the structure of a planting mechanism.

[Explanation of symbols]

 4 Input shaft 5 Feed case 6 Planted case 7 Seedling stand 10 Branch transmission shaft 11 Operation arm 12 Planted input shaft 13 Planted transmission shaft 20 Longitudinal feed shaft 21 Operated arm 22 One-way clutch A Lateral feed transmission mechanism P Rotation Axis

Claims (1)

[Claims] 1. A lateral feed transmission mechanism (A) extending across a branch transmission shaft (10) interlocked with a front-back facing input shaft (4) and a lateral feed shaft (14), and the branch transmission shaft (10). And a planted transmission shaft (13) for driving the planted input shafts (12) of the plurality of planted cases (6) on the same rotation axis (P) in the feed case (5). A vertical feed drive structure of an equipped seedling planting device, wherein a one-way clutch (2) is attached to a vertical feed shaft (20) of a seedling stand (7).
2) The operated arm (21) is mounted via the same, and the operated arm (21) abuts only at the stroke end of the lateral feeding of the seedling placing table (7) so that the longitudinal feed shaft (20) ) Is a longitudinal feed drive structure for a seedling planting device, in which an operation arm (11) for rotating the plant by a predetermined amount is attached to the planting input shaft (12).