JPH046490Y2 - - Google Patents

Description

[Detailed description of the invention] [Industrial field of application] This invention is based on a seedling stand on which multiple rows of pine-like seedlings are placed in parallel, with each row of pine-like seedlings facing downward towards the seedling take-out section. In addition to being equipped with a vertical seedling feeder claw for vertically feeding the seedlings, it is also equipped with a clutch for planting a small number of rows that independently stops the operation of some of the multiple planting claws deployed corresponding to each row of pine-shaped seedlings. , relates to a rice transplanter equipped with a seedling lifting prevention device near the top surface of pine-shaped seedlings in each row.

[Prior art]

Conventionally, the vertical seedling feed claws for each row were driven synchronously by a common drive shaft, and if the clutch for planting a few rows was operated to stop some of the planting claws, Even then, all the vertical seedling feed claws were still being driven.

[Problem that the invention attempts to solve]

Therefore, the pine-shaped seedlings in the rows that are in the dormant state of planting are subjected to the feeding action of the vertical seedling feed claws with their lower ends received by the sliding frame provided along the lower edge of the seedling platform. The pine-like seedlings in these dormant rows were damaged. Therefore, when planting a small number of rows, it is necessary to pull up and hold the pine-shaped seedlings in dormant rows to an upper position where the vertical seedling feed claws do not work, or to remove the pine-shaped seedlings from the seedling stand.
When returning to full-row planting, it is necessary to reset the pine-shaped seedlings, making seedling treatment before and after small-row planting cumbersome.

In addition, as a means to eliminate such problems,
It is also conceivable to provide a clutch that intermittents the power to each seedling vertical feed claw, and in conjunction with the stopping operation of the planting claw of the clutch for planting a small number of rows, cut the clutch for stopping the seedling vertical feed claw of the corresponding row. However, the transmission structure of the seedling feeding mechanism is complicated and expensive, which poses a practical problem.

The purpose of this invention is to make it possible to stop the vertical feeding of seedlings corresponding to the row where the planting claw has been stopped, with a simple configuration that does not require a transmission clutch for each vertical seedling feeding claw. do.

[Means to solve the problem]

The characteristic structure of the present invention to achieve the above object is that, in conjunction with the stopping operation of the planting claw of the clutch for planting a small number of rows, pine-shaped seedlings in the row corresponding to the stopped planting claw are raised upward from the bottom side of the seedling platform. A seedling stopper mechanism is provided which lifts the pine-shaped seedlings and clamps them in cooperation with a seedling floating prevention device to prevent vertical feeding of the seedlings, and a pressing part of the seedling stopper mechanism contacts the bottom surface of the pine-shaped seedlings, and a seedling resting table. It is formed from a drum-shaped member having a circular arc surface around the axis along the bottom surface and perpendicular to the seedling feeding direction.

[Effect]

According to the above configuration, the pine-shaped seedlings corresponding to the rows where the planting claws are stopped are held between the seedling floating prevention device and the seedling stopper mechanism, so that the pine-shaped seedlings corresponding to the rows where the planting claws are stopped are held between the pine-shaped seedlings and the seedling vertical feeding claws. A slip occurs, and vertical feeding of the seedlings in the non-planted row is prevented, although the seedling vertical feeding claws are driven integrally with the seedling vertical feeding claws in other rows.
In addition, since the pressing part of the seedling stopper mechanism that contacts the bottom of the seedling is a horizontally long drum, for example,
As shown in Publication No. 102318, compared to the case where a seedling pushing up device consisting of a wire rod as a seedling stopper mechanism along the vertical seedling feeding direction is used on both left and right sides of a vertical seedling feeding device as a vertical seedling feeding claw. , it is possible to reduce the surface pressure when lifting the seedlings.

[Effect of idea]

Therefore, there is no need to use a complicated and expensive clutch to connect and disconnect power to each seedling vertical feed claw.
By simply adding a relatively simple seedling stopper mechanism, it has become possible to stop the vertical feeding of seedlings in dormant rows.

Moreover, since the vertical feeding of the seedlings is stopped by clamping the seedlings between the seedling stopper mechanism and the seedling floating prevention device, for example, the seedlings can be moved from the bottom side of the seedling platform using the seedling stays to stop the vertical feeding of the seedlings. Compared to stopping the vertical feeding of seedlings by lifting the seedlings above the trajectory so that the locus of action of the vertical feeding claws does not reach the seedlings, the advantage is that the seedlings can be prevented from falling downward due to machine vibration. There is.

Furthermore, since the surface pressure when lifting the seedlings by the pressing part of the seedling stopper mechanism is small, cracks in the seedbed soil can be suppressed and damage to the seedlings can be prevented.

〔Example〕

In this rice transplanter, a six-row planting device 3 equipped with a forward-sloping seedling tray 2 is connected to the rear of a passenger vehicle body 1 so as to be adjustable up and down. The seedling blocks are moved back and forth with a constant stroke against six sets of planting claws 5 that operate vertically in circulation, so that seedling blocks are cut out one by one from the lower end of the pine-shaped seedlings W placed in parallel in six rows and planted. The pine-shaped seedlings W are sent downward at the stroke end where cutting of one row at the lower end is completed.

The seedling tray 2 is provided with four seedling vertical feeding claws 6 for each row, which are rotated at a constant angle at each stroke end of the seedling tray. The six vertical seedling feed claws 6 are all integrally driven and stopped in conjunction with each other.

7 is a seedling floating prevention device that prevents a pine-like seedling from slipping down under its own load and causing the upper and lower middle portions to bend and bulge upward, a so-called inchworm condition. It is constructed so that it can be switched between two positions, a working position and a non-working position, by means of an engagement mechanism 10 with a hole 9, and this seedling floating prevention device is supported by a bracket 21 independently for two rows each. .

On the back side of the seedling stand 2, there is a bottom surface 2 of the seedling stand 2.
A seedling stopper mechanism A is provided which projects upward from a and which, in cooperation with the seedling floating preventer 7, clamps the pine-shaped seedling W and prevents the vertical feeding of the seedling.

The seedling stopper mechanism A is composed of a swinging link 11 and a freely rotatable drum-shaped member 12 as a pressing portion that contacts the bottom surface of the seedling, and the seedling stopper mechanism A is constructed of a swinging link 11 and a rotatable drum-shaped member 12 as a pressing portion that contacts the bottom surface of the seedling. The drum 12 is projected upward to lift the pine-shaped seedlings W upward, and the lifted pine-shaped seedlings are pressed against the seedling floating prevention device 7, and in cooperation with the seedling floating prevention device 7, the pine-shaped seedlings W are lifted up. is held between the pine-shaped seedlings W and the vertical seedling feed claws 6 to prevent the vertical feeding of the seedlings, and the drum-shaped member 12 is placed along the bottom of the seedling stand to hold the seedlings. It is configured so that it can be switched to a state where it passes with less resistance.

The drum-shaped member 12 is provided in pairs on the left and right for each strip, and has a single shaft built across two strips so that the two adjacent strips can be switched integrally into an active position and a non-active position. Swing link 11 to 13
... are fixedly connected.

Reference numeral 14 denotes a clutch for planting a small number of rows, which controls the driving and stopping of the planting claws 5, 5 for two adjacent rows, and a total of three clutches are provided in the planting mission case M.

15 is the clutch 14 for planting a small number of rows.
It is a clutch lever for performing an on/off device for the clutch lever 15, and in conjunction with an operation to stop the planting claw 5 of this clutch lever 15 (clutch cutting operation), the drum 12 of the row corresponding to the stopped planting claw 5... The clutch lever 15 and the rotation shaft 13 of the swing link 11 are arranged so that the
A fixed arm 16 is connected to the arm 16 via a wire 17, and when the clutch lever 15 is cut, the wire 17 is pulled to cause the drum-shaped member 12 to protrude from the bottom of the seedling stand, and the clutch lever 15 is inserted. When operated, the position is switched to a non-protruding position by the biasing force of the spring 18.

[Another example]

In configuring the seedling stopper mechanism A, the fourth
As shown in the figure and FIG. If the members 20 are configured to be lifted up, the bottom surface of the seedlings will not be gouged out by the vertical seedling feed claws 6, which is even more beneficial.

[Brief explanation of the drawing]

The drawings show an embodiment of the rice transplanter according to the present invention, in which Fig. 1 is a longitudinal sectional view of the main part of the seedling stand, Fig. 2 is a side view showing the rear part of the rice transplanter, and Fig. 3 is the main part of the seedling stand. Fig. 4 is a longitudinal sectional view of the main part showing another embodiment;
FIG. 5 is a plan view of the same. 2... Seedling rest, 4... Seedling take-out part, 5... Planting claw, 6... Seedling vertical feed claw, 7... Seedling floating preventer, 12... Drum-shaped member, 14... Few strips Clutch for planting, A... Seedling stopper mechanism, W... Pine-shaped seedling.

Claims (1)

[Scope of utility model registration request] The seedling tray 2 on which multiple rows of pine-like seedlings W are placed in parallel is equipped with a seedling vertical feed claw 6 that vertically feeds the pine-like seedlings W of each row toward the lower seedling take-out section 4. Equipped with a clutch 14 for planting a small number of rows that independently stops operation of some of the plurality of planting claws 5 arranged corresponding to the rows of pine-shaped seedlings W,
Furthermore, in a rice transplanter in which a seedling floating prevention device 7 is provided near the upper surface of the pine-shaped seedling W in each row, the stopping planting claw 5 is activated in conjunction with the planting claw stopping operation of the clutch 14 for small number of row planting. Lift the pine-shaped seedlings W of the corresponding row upwards from the bottom side of the seedling platform and place the pine-shaped seedlings W.
A seedling stopper mechanism A is provided to prevent the vertical feeding of the seedlings by clamping the seedlings in cooperation with the seedling floating prevention device 7, and a pressing part of the seedling stopper mechanism A that contacts the pine-like bottom surface of the seedlings is attached to the bottom surface of the seedling platform. A rice transplanter characterized in that it is formed from a drum-shaped member 12 having an arcuate surface around an axis in a direction perpendicular to the direction of sending out seedlings.