JPS6029855Y2 - Seedling stopper device in rice transplanter - Google Patents

Description

[Detailed description of the invention] This invention is a rice transplanter that performs rice planting work in a flooded field, and is designed to selectively stop the supply of seedlings from the seedling table in the planting section in the direction of the planting claw. This invention relates to a seedling stopper device.

Conventional seedling stopper devices generally include a rod-shaped or plate-shaped seedling stopper that stands up on the surface of the seedling platform and receives the seedling mat from the sloped lower side of the seedling platform. Therefore, in order to stop the seedlings, the seedling mat was placed on the seedling platform, and then the seedling mat was released from the vertical seedling feeding device that feeds the seedling mat vertically, and then the seedling mat was pulled up on the slope above the seedling stopper device. Three operations were required: an operation to release the seedling mat from the vertical seedling feeding device, such as raising the seedling stopper at the top, an operation to pull up the seedling mat, and an operation to raise the seedling stopper.

The purpose of this invention is to make it easy to operate, as it is possible to stop seedlings by simply raising the seedling stopper upright, and at the same time, to ensure that the seedling stopping action is carried out reliably and to release the seedling stop gently. To provide a new seedling stopper device for a rice transplanter, which prevents seedlings from collapsing.

Regarding the illustrated embodiment, to explain the structure of the seedling stopper device according to this invention, as shown in FIG. and the space between them is rotatably connected around the vertical fulcrum axis Y, and the left and right front wheels 2 are attached to the front part 1A of the fuselage.
The rear IB of the fuselage supports the left and right rear wheels 3, respectively, and an engine (not shown) is mounted in the engine cover 4 at the rear of the fuselage 1, and the engine drives the front and rear wheels 2,
3 is configured to rotate and move the aircraft, and a worker sitting on a passenger seat 5 on the aircraft 1 operates the control handle 6 in front of the operator to rotate the front and rear parts of the aircraft IA and IB relative to each other. A seedling stand 8. is connected to the front part of the airframe 1 by a three-point linkage device 7 to steer the aircraft 1. A planting section 11 equipped with a planting claw 9, a float IO, etc. is provided, and a flexible transmission shaft mechanism 12 for transmitting power from the body 1 to the planting section 11 is provided.
This is a riding rice transplanter configured to perform horizontal reciprocating drive of the seedling platform 8 and vertical movement drive of the planting claws 9 by engine power transmitted to the planting section 11 by the passenger seat 5. This idea has been implemented in the following manner in a riding rice transplanter that is equipped with a preliminary seedling mounting stand 13 at the upper rear of the rice transplanter.

That is, FIGS. 1-4 show the first embodiment, and as shown in FIG. It is partitioned into a plurality of area sections 8A according to the number of strips in the width direction by partition protrusions 14, but the upper surface near the lower end of each area section 8A has a section that covers almost the full width of each area section 8A. A concave portion 15 is formed along the line.

This concave portion 15 has a star wheel 16 which is partially exposed onto the top surface of the seedling platform 8 through a window hole from the bottom side of the seedling platform 8.
The star wheel 16 is driven to rotate intermittently in connection with the horizontal feeding of the seedling table 8, and vertically feeds the seedling mat on the seedling table 8, so as to partially overlap the seedling table 8 in the vertical direction. The seedling platform 8 is formed on the sloping upper side at the position shown in FIG.

This recess 15 is rotatable with the partition ridges 14 on both sides of each area section 8A (in the area section 8A at one end, the partition ridges 14' on the side end of the seedling stand 8). A plate-shaped seedling stopper 18 is provided by fixing the sloping upper end edge of the seedling stand 8 to a fulcrum shaft 17 supported by a fulcrum shaft 17.

The seedling stopper 18 is integrally provided with comb-tooth-like or serrated protrusions 18a that are arranged in parallel with the lower end of the sloping end of the seedling platform 8.

Along every other partition protrusion 14, the partition protrusion 1
Two operating rods 19 that can move forward and backward for selectively rotating the seedling stopper 18 on the 4- side and the other side section 8A.
Each of these operating rods 19 is fixed at its tip to one end of the fulcrum shaft 17 of each seedling stopper 18, and is attached to a rotating arm 20 that faces upward from the window hole 14a of the partition ridge 14. It is pivoted.

The base end of each operating rod 19 is guided upward in the direction of inclination of the seedling stand 8, and the base end is provided with a loop-shaped handle 19a, as shown in FIG.

The advancing and retracting positions of each operating rod 19 are fixed by inserting the ends of the operating rod 19 into a pair of lock holes 21 and 22 formed at the base end of the partition protrusion 14.

As a result of the above, the seedling stopper 18 is moved from the recumbent state within the recess 15, as shown by solid lines in FIGS. 2 and 3, to the handle portion 19.
When the fulcrum shaft 17 is rotated in one direction via the rotating arm 20 by pulling the operating rod 19 while holding the handle a, the fulcrum shaft 17
From within the concave portion 15, the seedling stand 8 is rotated from the lower side of the inclination toward the upper side, and is made to stand up as shown by the chain line in FIG. 3, and vice versa. When the fulcrum shaft 17 is rotated in the other direction via the operating waist rotation arm 20 by holding the handle 19a and pushing the operating rod 19 from this state, the fulcrum shaft 17 is rotated from the inclined upper side of the seedling stand 8 downward. It is designed to be tilted and rotated toward the side so that it enters the recess 15 and almost aligns its upper surface with the seedling stand 8, as shown by solid lines in FIGS. 2 and 3.

The first embodiment is configured as described above, and prior to seedling succession in any area of the seedling stand 8, or in advance of planting at the edge of a ridge, etc., a specific row is When it is decided not to plant a seedling in a region 8A, or to stop seedlings in a plurality of area sections 8A, by operating the operating rod 19, the area section 8A can be planted as shown by the chain line in FIG. The seedling stopper 18 may be erected.

At this time, the seedling stopper 18 has a protrusion 1 on its upright edge side.
8a slightly bites into the lower surface of the seedling mat, lift the lower edge of the seedling mat, and lift the star wheel 16 for vertical feeding.
After the seedling mat is disengaged from the seedling mat, the seedling mat is rotated to the upright stop position, so that the seedling stopping action is ensured.

Furthermore, when the seedling stopper 18 is turned upside down to release the seedling stop, the protrusion 18a that has been slightly bitten into the underside of the seedling mat is gradually pulled out from the seedling mat, and the seedling stop is gradually released. No problems such as seedling collapse.

Next, the second embodiment shown in FIGS. 5 and 6 will be explained. In this second embodiment, in addition to providing the same seedling stopper 18 at the same position as above,
Another seedling stopper 28, which is similarly movable up and down around the fulcrum shaft 27, is provided at an appropriate distance above the seedling platform 8 in the inclination direction, in the recess 25 on the upper surface of the seedling platform 8.

The other seedling stopper 28 also has a protrusion 28a on the upright edge side.
It is formed into a plate shape with a

The other seedling stopper 28 is also provided with a rotating arm 30 attached to the fulcrum shaft 27 to which it is fixed, but this rotating arm 30 is not directly pivoted to the operating rod 19 and is It is related as follows.

That is, as shown in the figure, a short sleeve 31 is fixed on the rotating arm 30, and the operating rod 19 is slidably inserted into this sleeve 31, and the sleeve 31 is placed on the operating rod 19 and the sleeve 31 is inserted into the sleeve 31. Pair of push metal fittings 32 and 33,
They are fixed at appropriate intervals in between.

The length of the sleeve 31 is shorter than the distance between the opposing end surfaces of the push fittings 32 and 33.

From this, when applying a pulling action to the operating rod 19 from the posture of the rotating arm 30 shown in FIG. From the time when the operating rod 19 is pulled, the push metal fitting 3
2 pushes the sleeve 31 to rotate the rotating arm 30, and finally the state shown by the chain line in FIG. 6 is obtained.

Conversely, when applying a pushing action to the operating rod 19 from the posture of the rotating arm 30 shown in chain lines in FIG.
From the time when the operating rod 19 is pushed by the same distance Δd between the sleeve 31 and the sleeve 31, the rotating arm 30 is pushed by the pusher 33
is rotated, passing through the state shown by the solid line in FIG. 6, and finally the state shown in FIG. 5 is obtained.

The above-mentioned interval Δd is such that when a pulling action is applied to the operating rod 19, the lower seedling stopper 18 is rotated upward by a slight amount due to the rotation of the rotating arm 20 pivotally attached to the tip of the operating rod 19. From the point at which the lower end of the seedling mat is removed from the star wheel 16 and lifted up by a slight amount, the rotating arm 3
0 begins to rotate, and as a result, the star wheel 16
The seedling mat that is disengaged from the upper seedling stopper 2
8 rotation, especially the protrusion 28a that slightly bites into the underside of the seedling pine
The setting is such that the stoppers 18 and 28 on both sides can be rotated upright so that the rotation of the seedling table 8 can be pulled up toward the upper end of the slope.

In this way, the seedling stopper device according to the second embodiment,
During the seedling stop action, the seedling mat is actively pulled up by the upright rotation of the upper seedling stopper 28 to stop the seedlings, so that the seedling stop is performed extremely reliably. If the amount of lifting of the seedling mat is set so that the lower end of the seedling mat is above the lower seedling stopper 18 in the seedling stop state, an ideally reliable seedling stop state can be obtained.

Further, in the second embodiment shown in FIGS. 5 and 6, the movement of the operating rod 19 is controlled by fixing the seedling table 8 to the lower surface of the seedling table 8 via a support arm 40, as shown in FIG. This is achieved by a hydraulic cylinder 42 on a support 41 provided at the upper end of 8.

Furthermore, instead of the hydraulic cylinder 42, a plunger or the like that performs a pulling and pushing action by excitation and magnetization of a solenoid may also be used.

As is clear from the above explanation, the seedling stopper device in the rice transplanter of this invention has a fulcrum axis along the width direction of the seedling platform.
A plate-shaped seedling stopper is supported around 7 so that the seedling stand 8 can be rotated upright from the lower side of the inclination toward the upper side and rotated down in the opposite direction, and is provided with a protrusion 18a on the upright edge side. 18 is placed in such a position that the seedling mat is released from the seedling vertical feeding device 16 by lifting the seedling mat by the upright rotation of the seedling stopper 18.
It is characterized by being provided in the recess 15 formed on the upper surface of the holder, and has the following effects.

That is, the seedling stopper 18, which has a protrusion 18a on the rising end edge side and is designed to be raised and rotated from the lower side of the slope of the seedling platform 8 to the upper side, is used when the seedling stopper 18 is raised and rotated with the seedling mat at the stopper position. The projection 18a slightly bites into the underside of the seedling mat and lifts the seedling mat, but this invention uses such a seedling stopper 18 to vertically feed the seedlings by lifting the seedling mat by rotating the seedling stopper 18 upright. Since the seedling mat is disposed at such a position that the seedling mat is disengaged from the device 16, there is no need for an operation to disengage the seedling mat from the vertical seedling feeding device 16 when stopping the seedlings.

In addition, by rotating the seedling stopper 18 in an upright position, the protrusion 18a slightly bites into the lower surface of the seedling mat, and the seedling mat is slightly pulled up in the upward direction of the seedling platform. Since the seedlings must be stopped by maintaining the seedlings in the dug-in state, in the end, according to this invention, the seedlings can be stopped and scaled by simply raising and rotating the seedling stopper, and a vertical seedling feeding device is used to stop the seedlings. The seedling stop operation becomes easy without requiring the operation of removing the seedling mat from the seedling mat 16 or pulling up the same seedling mat.

Regarding the seedling stop state, as mentioned above, the seedling mat is disengaged from the seedling vertical feeding device 16, and the seedling stop is performed with the protrusion 18a slightly biting into the lower surface of the seedling mat. Therefore, when the seedling stopper 18 is rotated from the upper side of the slope of the seedling table to the lower side to release the seedling stop, the projection 18a is pulled out from the seedling mat. By gradually releasing the engagement while letting out the seedling, the seedling stop can be released gradually and the occurrence of art sales can be prevented.

[Brief explanation of the drawing]

Fig. 1 is a side view of a riding rice transplanter equipped with an embodiment of this invention, Fig. 2 is a perspective view of the main parts of the riding rice transplanter, and Fig. 3 is a longitudinal side view taken along the line ■-■ in Fig. 2. 4 is a perspective view of the main parts of the same embodiment, FIG. 5 is a perspective view showing another embodiment of the invention, and FIG. 6 is a longitudinal sectional side view of the same embodiment. 8... Seedling stand, 8A... Area division, 1
4, 14'...Partition protrusion, 15...
Concave portion, 16... Star wheel, 17... Curved fulcrum shaft, 18... Seedling stopper, 18a...
...Protrusion, 19...Bending operation rod, 2゜...Rotating arm, 25...Concavity, 27...Fully shaft, 28...Seedling Stopper, 28a...
Projection, 30...Rotating arm, 31...
Sleeve, 32.33... Push metal fitting, 42...
...Hydraulic cylinder.

Claims (1)

[Scope of utility model registration request] The seedling platform is supported around a fulcrum axis along the width direction of the platform so that the seedling platform can be rotated upright from the lower side of the inclination toward the upper side and rotated down in the opposite direction, and is provided with a protrusion on the edge of the upright edge. A plate-shaped seedling stopper is formed on the upper surface of the seedling platform in such a position that the seedling mat is disengaged from the seedling vertical feeding device by raising the seedling mat by raising and rotating the seedling stopper. It is characterized by being provided in the recessed part,
Seedling stopper device in rice transplanter.