JPH044492Y2 - - Google Patents

Description

[Detailed description of the invention] Industrial application field The present invention relates to an improvement of a seedling feeding device in a rice transplanter.

BACKGROUND OF THE INVENTION Recently, seedling feeding devices for rice transplanters equipped with belts with protrusions have been provided in order to increase the area of contact with the back surface of seedbed soil to ensure reliable feeding of seedlings. In this device, a belt having locking protrusions around the entire circumference is rotatably suspended from the bottom of the seedling table, and the belt is operated intermittently to move the pine seedlings on the seedling table at predetermined pitches to the seedling take-out port. It was designed to extend out to the side.

Problems to be Solved by the Invention However, the belt-type seedling feeding device described above has a disadvantage in that the belt tends to sink due to the weight of the seedlings, and the feeding action of the seedlings lacks reliability. As a solution to this problem, it has been considered to add ribs along both sides of the opening at the bottom of the seedling stand to which the belt is attached, and to use the ribs to guide and support the outer back side of the belt. In this method, even though the belt sinks in the vertical direction (seedling feeding direction) can be prevented by ribs, belt sinking in the horizontal direction (seedling width direction) cannot be prevented, so a depression occurs in the center of the belt, and the seedbed is As the soil floats up from the belt, the locking protrusions are weakly biting into the seedbed soil, resulting in incomplete feeding of the seedlings and incomplete holding of the seedlings to prevent them from falling off or shifting laterally. , this causes a stock shortage,
In turn, this becomes a cause of poor planting accuracy. In particular, recently, lightweight artificial pine trees made of substitute soil are often used, so the locking action of the belt protrusions tends to be insufficient, and there is a strong need for reliable seedling delivery.

Means for Solving the Problems Therefore, the present invention attempts to solve the above problems by providing a wide belt guide member having a rising step or protrusion in the middle of the belt rotation direction. It is something to do.

Function: When pine seedlings are placed on the seedling stand, the belt tends to sink due to the weight of the pine seedlings, but the belt is guided and supported from below by the belt guide member, preventing the belt from sinking. Also, during the planting process, after the seedling table, which is constantly moving back and forth from side to side, reaches the end of either left or right movement and scrapes off the last plant in the movement process, the seedling feeding device is activated and the belt rotates. The pine seedlings on the seedling platform are fed out toward the seedling take-out port, but when the belt rotates, the feeding side of the belt is pushed up by the step or protrusion of the belt guide member, so the belt The protrusions dig deeply into the bottom of the seedbed soil, which prevents the belt from sinking and ensures that the belt protrusions retain the seedbed soil, ensuring that the seedlings are fed out and retained. Planting accuracy can be greatly improved.

Embodiment 1 is a walk-behind rice transplanter having swing wheels 2, 2 on the left and right sides and a steering handle 3 at the rear.
A seedling stand 4 is installed above the handle 3 so as to be vertically low and backwardly high, and to be able to reciprocate from side to side. A rod 5 is arranged to be movable up and down.

6 is the engine, 7 is the float for sliding on the rice field, 8
is an apron that receives the front edge of pine seedling a. Reference numeral 9 denotes a rectangular opening provided on the side of the seedling platform 4 closer to the apron 8, which is long in the front-rear direction. A belt 12 with projections 12a is rotatably suspended. Reference numeral 13 denotes a wide belt guide member disposed and supported via stays 14 and 15 at a position close to the back surface of the feeding side of the belt 12. A rising step portion P is formed. Instead of this stepped portion P, a protrusion or protrusion (see FIG. 3) may be provided. Further, the belt guide member 13 is not limited to a continuous plate-like member as in this embodiment, as long as it has the function of supporting the working side of the belt 12 from the back side. For example, a plurality of round rod-shaped members may be arranged at appropriate intervals along the side shape of the guide member. Reference numeral 16 denotes a front upwardly sloping guide protruding from the seedling feeding start end side of the belt 12 of the seedling platform 4, and this guide body 16 allows the feeding start end side of the pine seedlings a to be smoothly and smoothly without interfering with the protrusion 12a of the belt 12. This functions to reliably guide the guide onto the belt 12. 17 is a feed lever fixed to the shaft 10a of the pulley 10, 17a is a roller pivotally supported at the tip of the feed lever 17, and when the seedling platform 4 comes to either the left or right end of the movement, the final plant of the movement process is carried out. After scraping off the shaft 1, the roller 17a comes into contact with a constantly rotating drive arm (not shown) and the feed lever 17 is forcibly pushed up.
0a and the pulley 10 rotate by a predetermined angle in the direction of the arrow in FIGS. 2 and 5, and the belt 12 rotates toward the seedling delivery side.

Incidentally, the belt guide member 13 is not a fixed type, but may be detachably attached. When the belt 12 is made removable, the guide member 13 does not get in the way when replacing the belt 12, and the replacement work can be easily performed, and assembly is also facilitated.

In the configuration as described above, when a pine seedling a is placed on the seedling platform 4, as shown in FIGS. Belt 12 due to the own weight of pine seedling a because it is in a state where it is in contact with and supported.
This prevents sinking not only in the vertical direction but also in the horizontal direction, and the stepped portion P causes undulations as shown in the figure. Planting of seedlings is started in this state, and after scraping off the final plant of the movement at the left and right moving ends of the seedling platform 4, the pulley 10a momentarily rotates at a predetermined angle to move the belt 12 to the seedlings. Rotate it to the feeding side.
The belt guide member 13 is also used during this seedling feeding action, that is, for intermittent instantaneous seedling feeding at the left and right moving end of the seedling platform 4.
Since the belt is prevented from sinking, the seedlings are fed smoothly without uneven feeding. In addition, the belt 12 is pushed upward in the forward direction of movement by the stepped portion P provided on the guide member 13, so that the protrusion 12a protruding from the belt 12 bites deeply into the bottom of the pine seedling soil ( Figures 6 and 7
(see figure), the locking action of the pine seedlings a by the belt 12 is ensured, and the feeding and holding of the seedlings is performed even better. Therefore, problems such as the occurrence of missing plants at the ends of left and right movement due to incomplete prevention of lateral slippage and uneven numbers of planted plants due to compaction of the seedbed due to seedlings falling off are eliminated, and the seedlings are delivered accurately. , the accuracy of seedling planting is greatly improved.

Effects of the invention As mentioned above, the invention has a belt having locking protrusions around the entire circumference, which is rotatably suspended at the bottom of the seedling stand.
In a rice transplanter in which the belt is operated intermittently to feed out pine seedlings on a seedling stand at predetermined pitches toward the seedling take-out port, a belt is installed at a position close to the back surface of the feeding side of the belt halfway in the direction of rotation of the belt. Since a wide belt guide member with a raised step or protrusion is provided in the section, it is possible to prevent the belt from sinking due to the weight of the pine seedlings, allowing for even and smooth feeding of the seedlings. The protrusion of the belt bites deeply into the bottom of the pine seedling due to the pushing-up action of the belt by the step or protrusion provided on the guide member, making the locking action of the belt on the pine seedling more reliable. In addition to preventing slippage and lateral shifting, the seedling feeding action is always performed reliably, eliminating inconveniences caused by poor seedling feeding or poor seedling retention, and greatly improving planting accuracy. In particular, the present invention is effective for growing seedlings using lightweight artificial pine or paddy pine for direct sowing.

[Brief explanation of drawings]

Fig. 1 is an overall side view of a rice transplanter equipped with the present invention, Fig. 2 is a side view of the main parts, Fig. 3 is a side view showing another embodiment, Fig. 4 is a rear view of the seedling stand, FIG. 5 to FIG. 7 are action explanatory views. In the figure, 4 is a seedling stand, 12 is a belt, 12a is a locking protrusion, 13 is a belt guide member, a is a pine seedling,
P is a step or protrusion.

Claims (1)

[Scope of utility model registration request] A belt having locking protrusions around the entire circumference is rotatably suspended at the bottom of the seedling table, and the belt is operated intermittently to feed out the pine seedlings on the seedling table at predetermined pitches toward the seedling take-out port. The rice transplanter according to the present invention is characterized in that a wide belt guide member having a rising step or protrusion is disposed at a position close to the back surface of the feeding side of the belt in the middle of the rotation direction of the belt. Seedling feeding device of rice transplanter.