JPH0480645B2 - - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION (Industrial Field of Application) The present invention relates to a seedling planting machine with a seedling feeding device.

(Prior art) Conventionally known Japanese Utility Model Application Publication No. 56-30726 discloses a seedling tank that moves back and forth in the left-right direction and is partitioned into a plurality of compartment tanks by a plurality of longitudinal ridges and tilts in the front-rear direction. , a plurality of rectangular window holes formed at each lower position of the divided tank of the seedling tank, a drive shaft that passes laterally through the lower end of the group of window holes, and the window of the drive shaft. A group of drive guide rolls each fixed to a portion facing the hole, a driven shaft that is vertically movable passing through the upper end of each of the window holes, and a portion of the driven shaft facing the window hole. There is described a device comprising a group of driven guide rolls provided respectively, and a seedling transport belt wound around between each of the drive guide rolls and each of the driven guide rolls.

Further, Japanese Utility Model Publication No. 52-77186 describes a structure in which one end of a spring is engaged with both ends of a driven shaft, and the other end of the spring is engaged with a fixed portion.

In addition, Japanese Utility Model Publication No. 47-28125 describes a tank that moves back and forth in the left-right direction and is partitioned into a plurality of compartment tanks by a plurality of longitudinal ridges and tilts in the front-rear direction, and the compartment tank of the seedling tank. a plurality of rectangular window holes formed at each lower position of the window hole group, a drive shaft that passes laterally through the lower end of the group of window holes, and a drive shaft that is respectively fixed to a portion of the drive shaft facing the window holes. a group of guide rolls, a driven shaft passing laterally through the upper end of each of the window holes, a group of driven guide rolls each provided on a portion of the driven shaft facing the window hole, each of the drive guide rolls and each of the driven shafts. A structure is described in which the seedling feeding belt is provided with a seedling feeding belt that is stretched between the guide rolls and the drive shaft is provided with an intermittent drive mechanism.

(Problem to be Solved by the Invention) A driven device provided in a window hole formed at each lower position of a compartment tank, which is described in the above-mentioned publicly known Japanese Utility Model Publication No. 56-30726 and Japanese Utility Model Publication No. 47-28125. The guide roll has a structure in which it cannot move in the tensioning direction of the seedling transport belt, but the seedling transport belt usually has a structure that allows it to move in the tensioning direction of the seedling transport belt. The present application also takes special measures in this regard.

Therefore, when moving the driven guide roll in the tensioning direction of the seedling conveying belt, the driven shaft is pulled by a spring as described in Japanese Utility Model Application Publication No. 52-77186. However, the present application has devised a structure that does not particularly require a rotation prevention mechanism for the driven shaft, even if the driven shaft is pulled by a spring.

(Means for Solving the Problems) The present invention, which has been devised thus far, moves horizontally and reciprocatingly in the left-right direction, and uses a plurality of longitudinal protrusions 41 to form a plurality of compartment tanks 4.
A seedling tank 8 tilted in the front-rear direction divided into 2 and a plurality of rectangular window holes 12 formed at each lower position of the divided tank 42 of the seedling tank 8,
One drive shaft 16 that passes laterally through the lower end of each window hole 12, and a group of drive guide rolls 14 each fixed to a portion of the drive shaft 16 facing the window hole 12;
A vertically movable driven shaft 15 that passes laterally through the upper end of each window hole 12, and a group of 13 driven guide rolls each rotatably mounted on a portion of the driven shaft 15 facing the window hole 12. and a seedling transport belt 17 that is wound around each of the drive guide rolls 14 and the driven guide rolls 13,
A through hole 34 is provided in both end portions of the driven shaft 15 and a portion between the window hole 12, and the lower end 35 of the spring 22 is engaged with the through hole 34, respectively.
The upper end 43 of 2 is a seedling transplanter with a seedling feeding device that is engaged with a fixed part on the side of the seedling tank 8.

(Example) To explain with the drawings, 1 is a vehicle body, and a driver's seat 2 is provided at the rear of the vehicle body 1 to form a passenger vehicle body. 3 is a front wheel, 4 is a rear wheel, and 5 is a handle.

A rice planting section 7 is attached to the rear part of the vehicle body 1 via a vertical movement device 6. The rice planting section 7 is formed by a seedling tank 8, a planting body 9, a central float 10, side floats 11, and the like. The vertical movement device 6 is vertically moved by a hydraulic device.

As is well known, the seedling tank 8 is partitioned in the left-right direction by vertical ridges 41, and seedlings with soil are fitted into the partitioned tanks 42 one by one. A rectangular window hole 12 is formed at the lower end of each partitioned seedling tank 8, and a drive guide roll 14 is mounted on a drive shaft 16 at the lower end of each window hole 12. A driven guide roll 13 is mounted on the upper end of the hole 12 by a driven shaft 15, and a seedling transport belt 17 is passed between the guide rolls 13 and 14.

The upper surface side of the seedling transport belt 17 is attached so as to protrude somewhat above the bottom plate 18 of the seedling tank 8. Therefore, the plate-shaped seedlings fitted into the seedling tank 8 come into contact with the seedling conveying belt 17 at their lower surfaces, and are sent toward the planting body 9 below.

A one-way clutch 1 is attached to the lower drive shaft 16.
An actuating arm 20 is attached via 9.
A protrusion 21 is formed at the tip of the actuation arm 20.

The driven shaft 15 slides in the vertical direction but does not rotate. In the embodiments shown in FIGS.
There are four driven guide rolls 13, but the driven shaft 15 is a single through shaft, and is lifted upward by two springs 22 at both ends and three springs 22 in the middle. ing. In such a structure, the three springs 22 in the middle move up half of the driven guide rolls 13 on each side, but the two springs 22 on both ends move half of the driven guide rolls 13 on each side. Since it is only moved upward, the force is only halved, so the two springs 22 at both ends have only 1/2 the elasticity.

A large number of protrusions 23 are provided on the surface of the seedling transport belt 17.
is formed. The actuation arm 20 is a spring 2
The tip side is constantly pulled downward by the elastic force of 4.

The lower end of the rod 25 is pivoted at an intermediate position in the length direction of the operating arm 20, and the upper end 26 of the rod 25
is supported by a support fitting 27 provided above the driven guide roll 13 so as to be vertically slidable.

Several insertion holes 28 are provided in the upper end 26 of the rod 25 in the length direction of the rod 25, and pins 29 are selectively inserted into the insertion holes 28. Rod 25 in Figure 6
A T-shaped handle 33 is formed at the tip. At the outer position of the protrusion 21 at the tip of the actuating arm 20,
A seedling feeding cam 32 attached to a seedling feeding shaft 31 protruding from a planting part transmission 30 is faced. Seedling feeding cam 32
is constantly rotating.

From FIG. 7 to FIG. 10, the seedling transport belt 1
7 is illustrated. Driven shaft 15
A through hole 34 is bored in the spring 22 (5 in the example).
The lower ends 35 of each of the two screws are inserted into and engaged with the through holes 34.

Reference numeral 36 designates a mounting frame for the mounting frame 3. The mounting frame 36 is made of angle steel, and a through hole 37 is formed at the lower end of the mounting frame 36, through which the drive shaft 16 is rotatably inserted.
At the top of 6, there is a notch 39 that communicates with the outside on the top side.
A long elongated hole 38 is formed in the vertical direction, and the driven shaft 15 is fitted through the notch 39 as shown in FIG.
The lower end 35 of the spring 22 is engaged with the through hole 34, and the upper end of the spring 22 is engaged with an engagement groove formed in a bent portion 40 at the upper end of the mounting frame 36. Therefore, during operation, it does not come out of the notch 39, and the driven shaft 15 does not rotate, but can freely move up and down.

(effect) Next, we will discuss the effect.

(Overall planting action) Sit on the driver's seat 2, hold the handle 5, and operate the lever of the hydraulic system to move the vertical movement device 6 upward, which will move the rice planting section 7 upward, leading to the destination. It becomes possible to run.

In the rice field, when the rice planting section 7 is lowered by operating the hydraulic lever and moved forward in the rice field, the plate-shaped seedlings placed and fitted into the compartments in the seedling tank 8 move laterally. Each time, one plant is cut out using the planting body 9 and planted in a paddy field.

When the planting by the planting body 9 is completed in one horizontal row and the seedling tank 8 is moved horizontally to one end, the projection 21 of the actuating arm 20 is attached to the constantly rotating seedling feeding cam 32.
abut and engage, the actuating arm 20 moves upward by a certain angle and becomes as shown in FIGS. 3 and 4,
The drive shaft 16 is rotated by that amount to rotate the drive guide roll 1.
4 is rotated, and the seedling feeding belt 17, which is passed around between the drive guide roll 14 and the upper driven guide roll 13, is rotated by one seedling, and the seedling is sent downward by one seedling.

(Action of the driven shaft 15 and the spring 22) The driven guide rolls 13 of the present invention are provided in each compartment tank 42, so there is a plurality of them.
The driven shaft 15 is a single shaft as shown in the figure. When the driven shaft 15 is elastically moved up and down to tension the seedling transport belt 17, the design is complicated if the driven shaft 15 rotates.

However, in the present invention, a through hole 34 is bored in the driven shaft 15, and each lower end 3 of the spring 22 (five in the embodiment) is formed.
5 into the through hole 34, and fit the driven shaft 15 into the vertically elongated hole 38 with the notch 39 formed in the upper part of the mounting frame 36, and the upper end of the spring 22 is inserted into the upper end of the mounting frame 36. Since the driven shaft 15 is engaged with the engagement groove formed in the bent portion 40 of the driven shaft 15, the driven shaft 15 can have a structure in which it does not rotate, and the spring 22 functions to prevent the driven shaft 15 from rotating. do not need.

(Effect) The driven guide rolls provided in the window holes formed at each lower position of the compartment tank described in the above-mentioned publicly known Utility Model Publications No. 56-30726 and No. 47-28125 are suitable for seedlings. Although the seedling conveying belt has a structure that cannot move in the tensioning direction, the seedling conveying belt is usually constructed so that it can move in the tensioning direction of the seedling conveying belt.

Therefore, when moving the driven guide roll in the tensioning direction of the seedling conveying belt, the driven shaft is pulled by a spring as described in Japanese Utility Model Application Publication No. 52-77186. In particular, a rotation prevention mechanism is required.

However, in the present invention, the plurality of compartment tanks 42 are moved laterally in the left and right directions, and the plurality of vertical protrusions 41 are used to move the plurality of compartment tanks 42 horizontally.
A seedling tank 8 that is partitioned into a front and back slope.
and a plurality of rectangular window holes 12 formed at each lower position of the compartment tank 42 of the tank 8,
One drive shaft 16 that passes laterally through the lower end of each window hole 12, and a group of drive guide rolls 14 each fixed to a portion of the drive shaft 16 facing the window hole 12;
A vertically movable driven shaft 15 that passes laterally through the upper end of each window hole 12, and a group of 13 driven guide rolls each rotatably mounted on a portion of the driven shaft 15 facing the window hole 12. and a seedling transport belt 17 that is wound around each of the drive guide rolls 14 and the driven guide rolls 13,
A through hole 34 is provided in both end portions of the driven shaft 15 and a portion between the window hole 12, and the lower end 35 of the spring 22 is engaged with the through hole 34, respectively.
The upper end 43 of 2 is a seedling transplanter with a seedling feeding device that is engaged with the fixed part on the side of the seedling tank 8. (a) A single drive shaft 16 passed through the lower end of the window hole 12 laterally. , a group of drive guide rolls 14 each fixed to a portion of the drive shaft 16 facing the window hole 12 , and a single driven shaft 15 that is vertically movable and passes laterally through the upper end of each window hole 12 . A group of driven guide rolls 13 are each rotatably mounted on a portion of the driven shaft 15 facing the window hole 12, and a group of driven guide rolls 13 is wound between each of the drive guide rolls 14 and each of the driven guide rolls 13. Since the seedling transport belt 17 has a structure that is
Easy to configure.

(b) A through hole 34 is provided in both end portions of the driven shaft 15 and a portion between the window hole 12, and the lower end 35 of the spring 22 is engaged with the through hole 34, and the upper end 43 of the spring 22 is connected to the seedling. Since it is engaged with the fixed part on the side of the tank 8, the springs 22 engaged with both ends of the driven shaft 15 pull each half of the seedling conveying belt 17 at both ends (portion A in Fig. 7). The spring 22 pulls each half of the seedling conveying belt 17 on both sides (portion A' in Fig. 5), thereby distributing the force rationally and pulling it evenly.

C. Through holes 34 are provided in both ends of the driven shaft 15 and in the area between the window holes 12, and the lower ends 35 of the springs 22 are engaged with the through holes 34, respectively, and the upper ends 43 of the springs 22 are connected to the Since it is engaged with the fixed part on the side of the seedling tank 8, the driven shaft 15 is moved by the spring 22.
It has the function of preventing rotation.

[Brief explanation of drawings]

Fig. 1 is an overall side view, Fig. 2 is an overall plan view, Fig. 3 is a cross-sectional view of the main parts before the drive shaft rotates, and Fig. 4 is an overall side view.
The figure is a sectional view of the main part after rotation of the drive shaft, Fig. 5 is a partially cutaway plan view of the main part, Fig. 6 is a diagram of the second embodiment, and Fig. 7 is the same as Fig. 5. FIG. 8 is an exploded view of the shaft and spring, FIG. 9 is an exploded view of the shaft and mounting frame, and FIG. 10 is a perspective view of the mounting frame and shaft. Explanation of symbols, 1...Vehicle body, 2...Driver seat, 3
...Front wheel, 4...Rear wheel, 5...Handle, 6...
Vertical movement device, 7... Rice planting section, 8... Seedling tank, 9
... Planting body, 10 ... Center float, 11 ... Side float, 12 ... Long hole, 13 ... Guide roll, 14 ... Guide roll, 15 ... Axis, 16 ...
Shaft, 17... Seedling feeding belt, 18... Bottom plate, 19...
... One-way clutch, 20 ... Actuation arm, 2
1...Protrusion, 22...Spring, 23...Protrusion, 24
... Spring, 25 ... Rod, 26 ... Upper end, 27
...Supporting metal fitting, 28...Insertion port, 29...Pin,
30... Planting part transmission, 31... Seedling feed shaft, 3
2...Seedling feeding cam, 33...Handle, 34...Through hole, 3
5...Lower end, 36...Mounting frame, 37...Through hole, 3
8... Long hole, 39... Notch, 40... Bent part,
41... Vertical ridge.

Claims (1)

[Claims] 1. A seedling tank 8 that moves horizontally and reciprocally in the left-right direction and is partitioned into a plurality of partitioned tanks 42 by a plurality of longitudinal ridges 41 and tilts in the front-rear direction, and a seedling tank 8 formed at a lower position of each partitioned tank 42 of the seedling tank 8. A plurality of rectangular window holes 12, a single drive shaft 16 that passes laterally through the lower end of each window hole 12, and a drive shaft 16 that is fixed to a portion of the drive shaft 16 facing the window hole 12, respectively. a group of 14 drive guide rolls, and a single driven shaft 15 that is vertically movable and passes horizontally through the upper end of each window hole 12;
A group of 13 driven guide rolls each rotatably mounted on a portion of the driven shaft 15 facing the window hole 12, each of the drive guide rolls 14, and each of the driven guide rolls 1.
3, and a seedling conveying belt 17 which is passed around between the driven shaft 15 and the window hole 12, respectively.
The lower ends 35 of the springs 22 are engaged with the through holes 34, and the upper ends 43 of the springs 22 are engaged with a fixed part on the seedling tank 8 side.