JPH04190709A - Float structure of seedling transplanter - Google Patents

Abstract

PURPOSE:To obtain the subject structure serviceable even for a rush transplanter by respectively specifying the shape of a sensor float and the structure of its guide grooves. CONSTITUTION:Both left and right ends of a sensor float (F) are extended to positions projected from travel devices 4 and 4 of a running machine body to the lateral outside of the machine body in the width direction and upward recessed and sunk guide grooves 10 and 10 are formed on the bottom side of passage locus parts of the travel devices 4 and 4 in side float parts 5 and 5 of the sensor float (F). The cross-sectional area when viewed from the fore- and-aft direction of the above-mentioned guide grooves is reduced toward the back side and mud is forcibly pushed into the passage loci of wheels.

Description

[Detailed Description of the Invention] [Field of Industrial Application] The present invention mainly relates to a float structure for a transplanter for strawberry seedlings with narrow row spacing, and more specifically, a sensor float for controlling the elevation of the planting section is attached to the rear of the transplanter. The present invention relates to a float structure for a seedling transplanter, in which the seedling transplanter is attached to a planting part so as to be vertically displaceable by swinging around a fulcrum provided in the machine, and the planting part is connected to a traveling body at a rear position thereof.

It is also possible to apply the present invention to transplanters other than rice transplanters, such as rice transplanters.

[Conventional technology]

As this type of float structure, Utility Model Application Publication No. 1-60623
Like the rice transplanter shown in the publication, a sensor float is placed at the center in the width direction of the machine for lifting and lowering control, and a pair of side floats for rolling control are placed on each side of the float. What it consists of is known as a general thing. A float structure based on this technology was also used in the straw transplanter.

[Problem to be solved by the invention]

Normally, side floats not only support the planting area, but also level the dented and rough planting ground after the left and right wheels of the aircraft have passed. It also has a left and right height above ground detection function for rolling control.

By the way, since the width of the planting row for rice seedlings (about 20 cm) is clearly narrower than the width of the planting row for rice seedlings (about 30 cm), it has been found that the following problems occur.

In other words, the shape of the side floats is much narrower than that of a rice seedling transplanter, and is elongated from front to back, so most of the side floats are located on the path of the wheels, which is why they should function properly. Not only was it difficult for the mud-filling effect to be exerted afterwards, but on the contrary, the side floats would sink into the depressions after they had passed, rendering them useless.

Naturally, if this happens, rolling control using side floats will also become impossible.

In view of the above circumstances, the present invention aims to provide a float structure that can also be used in a rice transplanter.

[Means to solve the problem]

For the above purpose, the present invention has the float structure of the seedling transplanter described at the beginning, in which both the left and right ends of the sensor float are extended to a position that protrudes laterally outward of the machine body in the width direction beyond the traveling device of the machine body. A guide groove for mud removal recessed upward is formed on each of the bottom sides of the traveling device passage locus portion of the extended left and right side float portions, and
The guide groove is characterized in that the cross-sectional area of the recess when viewed in the front-rear direction becomes smaller toward the rear.

[Effect]

According to the above configuration, the conventional three-part structure is abolished, and the sensor float is made larger on the left and right and has an integrated structure with side float sections, so the bottom area of the entire float can be sufficiently counted for planting. The side float part can be supported without sinking, and the phenomenon of the side float part sinking into the path of the wheel can be avoided.

Does the trajectory of the wheels have an uneven shape consisting of the depressions caused by the wheels and the mounds of mud on both sides?
The guide groove provided on the bottom side of the side float section collects the mounded mud and fills the recess with the mud.

Moreover, since the cross-sectional area of the guide groove in the longitudinal direction is configured to become smaller towards the rear, the mud taken in from the front end of the guide groove is forced into the path of the wheels as the aircraft moves forward. This causes the above-mentioned mud-filling effect to be further strengthened, and the planting surface after the wheels pass can be brought closer to the state before the wheels pass.

The forcible pushing action of the mud becomes active at the rear of the float where the cross-sectional area is narrowed, but since this sensor float is configured to swing up and down at the rear fulcrum, the reaction force of the forcible pushing action may cause the float to rise unexpectedly. difficult, therefore
The guide groove has almost no adverse effect on elevation control.

〔Effect of the invention〕

As a result, we were able to provide a float structure for a seedling transplanter that effectively exerts the float function and has excellent leveling performance for the planting ground by integrating the float and forming a guide groove.

If the float structure of the present invention is adopted in a strawberry seedling transplanter, the above effects can be more clearly demonstrated.

〔Example〕

An embodiment of the present invention will be described below regarding a strawberry seedling transplanter.

Figure 3 shows the rear part of the rice seedling transplanter for 6 rows.

A planting part (3) is connected to the rear of the traveling machine (not shown) so that it can be raised and lowered via a link mechanism (2), and this planting part (3)
A sensor float (F) for controlling the elevation of the planting section is attached to the rear of the float so that it can be moved up and down by swinging around a fulcrum (P) that is a left-right axis.

Both left and right ends of the sensor float (P) extend to a position that protrudes laterally outward of the aircraft in the width direction than the rear wheels (4), (4) of the traveling aircraft. The end is a side float part (5).

(5). This sensor float (F)
As shown in Figure 1, the center float part (6), both side float parts (5), and the tail parts of the planting claws (7) that wrap around the bottom of the planting case (8) from each of them. (9) It is formed in an extended shape in plan view.

Side float part (5), rear wheel (4) of (5),
Guide grooves (10) and (11) for removing mud are recessed upward at a higher level than the float bottom surface (13) on the bottom side of the passage trajectory portion (4) and on the bottom side of the left and right center portions, respectively.

(10) are formed so as to penetrate back and forth up to the respective tail portions (9).

The left and right guide grooves (10), (to) are configured such that the cross-sectional area of the recess when viewed in the front-rear direction becomes smaller toward the rear.

That is, as shown in Figure 2, the depth and width of the recess at the rear of the guide groove are both set smaller than those at the front, and the mud that is displaced by the rear wheels (4) and (4) is collected. Then, it is pushed into the groove formed by the rear wheels (4), (4), and the pushing action is most active at a position just below the fulcrum (P).

[Another example]

As shown in Fig. 4, the guide groove (10) of the side float part (5) is configured so that the width is kept constant and the recessed cross-sectional area in the front-rear direction becomes smaller toward the rear by changing only the depth. You may do so.

Further, as shown in FIG. 5, the upper surface (12) of the guide groove (10) is connected to the bottom surface (1
A pressing part (14) may be configured at the same position as 3), and the mud suppressing effect may be strengthened by this pressing part (14).

It should be noted that the present invention is not limited to the structure of the attached drawings by adding numerals in the claims for convenient comparison with the drawings.

[Brief explanation of drawings]

The drawings show an embodiment of the float structure of the seedling transplanter according to the present invention, in which Fig. 1 is a plan view of the float, Fig. 2 is a longitudinal sectional view of the guide groove, and Fig. 3 is a side view of the main parts of the planting section. , FIG. 4 is a plan view showing another embodiment of the float structure, and FIG. 5 is a longitudinal sectional view of a guide groove portion of the float shown in FIG. 4. (1)... Traveling body, (3)... Planting section, (4)... Traveling device, (5)...
Side float part, (10)... Guide groove, (
F)...Sensor float, (P)...
·fulcrum.

Claims (1)

[Claims] A sensor float (F) for controlling the elevation of the planting section is attached to the planting section (3) so as to be movable up and down by swinging around a fulcrum (P) provided at the rear thereof, and the planting section (3)
is a float structure of a seedling transplanter that is connected to a traveling body (1) at a rear position thereof, and the sensor float (1) is
The left and right ends of F) are connected to the traveling device (
4), extends to a position that protrudes to the outside of the fuselage in the width direction than (4), and the extended left and right side floats (
5) Forming guide grooves (10), (10) for mud removal, which are recessed upward, on the bottom side of the passage locus portions of the traveling devices (4), (4), respectively; The float structure of the seedling transplanter is configured such that the recessed cross-sectional area of the guide grooves (10), (10) in the front-rear direction becomes smaller toward the rear.