JPS6317306Y2 - - Google Patents

Description

[Detailed Description of the Invention] The present invention relates to a float device for a rice transplanter, and more specifically, to a float device in which a sub-float is connected to a main float provided below the machine body.

The float device in a rice transplanter uses its buoyancy to support part of the load of the rice transplanter body, preventing the machine from sinking, and also maintains good left-right balance of the machine to maintain the planting depth of the seedlings. equalize, etc.
They perform various functions, but some conventional float devices have a center float below the aircraft body and a pair of side floats on either side of the center float. The center float and side floats had to be adjusted separately to adjust the planting depth of the seedlings, which was troublesome. If the ground resistance increases rapidly, the driver may be forced to take the steering wheel, impairing straight-line driving performance, and the sub-float may push mud when the aircraft is turning, reducing work efficiency. It was coming.

Furthermore, in this type of rice transplanter, the center float mainly supports the running reaction force of the machine while it is moving while planting seedlings, so in order to ensure stable running of the machine, the center float is lengthened towards the rear. As much as you would like, there is a limit to the rear length due to the maneuverability of the aircraft, the distance between the driver's feet, etc. For this reason, it is difficult to adjust the front-to-back balance of the aircraft, and this has been done by attaching balance adjustment weights and reducing the amount of wheel descent, but this has the disadvantages of increasing the aircraft weight and reducing maneuverability. Ta.

The present invention was devised in view of the above-mentioned circumstances and to eliminate these shortcomings, and its purpose is to attach a main float to the lower central part of the aircraft on which the aircraft propulsion wheels are mounted. A sub-float disposed behind the propulsion wheel is connected to the main float via a float connecting member, and the center portion of the connecting rod constituting the float connecting member is horizontally rotated to the main float. The main float and sub-float can be integrated by supporting the main float and the sub-float in a manner that allows them to be used for planting seedlings. The planting depth can be easily adjusted, eliminating erroneous operations and allowing seedlings to be planted at the desired planting depth at all times.However, one sub-float may ride on a clod of soil, causing a sudden increase in ground resistance. Even if the driver takes the steering wheel, the straight-line running performance will not be affected, and the reaction force of the aircraft is not only received by the main float, but also by the sub-float located behind the propulsion wheels. Therefore, it is an object of the present invention to provide a float device for a rice transplanter that does not require a main float to be particularly long at the rear, and thus can secure a sufficient distance between the driver's feet.

The structure of the present invention will be explained with reference to an embodiment shown in the drawings. Reference numeral 1 is a body of a rice transplanter for two-row planting, and an engine 2 is mounted in front of a body frame 1a of the body 1. A pine-shaped group seedling mounting table 3 with a low front and high back is installed at the rear of the seedling tray 1.
Along with the left and right reciprocating movement of the seedling placing table 3, the seedling placing table 3
A seedling planting/dividing device 3a is provided in front of the seedling take-out port 3b of the seedling mounting table 3 for reciprocating and circulating the pine-shaped clustered seedlings placed on the seedling stand 3 in order to take out the pine-like cluster seedlings one by one and plant them on the rice field. Reference numeral 4 denotes left and right fuselage propulsion wheels, and the propulsion wheels 4 are movable up and down at their base ends on wheel transmission shafts that protrude outward from both sides of the transmission 5 that transmits the power of the engine 2. It is pivotally connected to the rear end portion extending rearward of the chain case 6 which is pivotally connected. 7 is the driving handle,
The operating handle 7 is behind the seedling table 3 and extends rearward and upward from the rear of the body 1 in a direction substantially parallel to the seedling table 3.

8 is a main float disposed at the lower central part of the fuselage frame 1a, and the main float 8
The front part is suspended from the fuselage frame 1a by a float mounting body 9 so as to be vertically movable, and the rear part is supported by a float upper and lower mounting 10 provided at the rear of the fuselage frame 1. That is, one end of a vertical lever 10b rotatably supported on a float support plate 10a provided at the rear of the fuselage frame 1a is connected to a bracket 11 fixed to the rear upper surface of the main float 8 via a pivot pin 12. It is pivotally connected. Furthermore, the bracket 11 is provided with a fitting hole 11a into which the pivot pin 12 is loosely fitted, while the vertical lever 10b is provided with a guide slot (not shown) provided in the float support plate 10a. ) The rotation can be adjusted within the range. Reference numeral 13 denotes a sub-float located on both left and right sides of the main float 8 and behind the propulsion wheel 4, and the left and right outer sides of the sub-float 13 are located inside the left and right ends of the propulsion wheel 4, and The rear end of the sub-float 13 is formed to be located rearward than the rear end of the main float 8. That is, main float 8
The rear end of the sub-float 13 is located in front of the rear end of the seedling table 3, but the rear end of the sub-float 13 is located in the rear of the rear end of the seedling table 3 (the second
figure). Reference numeral 14 denotes a connecting rod constituting the float connecting member 15. The center portion of the connecting rod 14 is attached to the rear end of the bracket 11 provided at the rear of the main float 8, and Connecting brackets 1 are provided at both ends of the sub-float 13 in front of and above the bottom ground plane of the sub-float 13.
6 is pivotally connected via a pin 17 so as to be able to move up and down, and the sub-float 13 urges the grounding surface of the sub-float 8 in the direction of ground contact by a twister 18 wound around the connecting portion. It's held up as well as possible.

As shown in FIGS. 6 and 9, in the present invention, a boss 19 is fixed to the center of the connecting rod 14a constituting the float connecting member 15, and the boss 19 is provided on the main float 8. The connecting rod 1 is rotatably fitted into a pivot shaft 20 that projects upward from the rear of the bracket 11.
4a is antagonistically connected to a mounting bracket 21 provided at an appropriate position at the rear of the fuselage via a pair of coil bombs 22.

Next, the operation of the present invention constructed as described above will be explained. Now, to perform seedling planting work in the field, the seedling planting device 3a takes out the pine-shaped clustered seedlings placed on the seedling table 3 one by one from the seedling take-out port 3b, and plants the seedlings on the rice field. do. In this case, the rear of the aircraft 1 tends to sink due to the propulsion reaction force of the propulsion wheels 4, but the propulsion reaction force is absorbed by the main float 8 and the rear long sub-assembly connected to the main float 8 via the float connection member 15. Since the main float 8 is received integrally with the float 13, there is no need to make the main float 8 particularly long toward the rear, and it is sufficient to ensure sufficient distance between the driver's feet and for adjusting the longitudinal balance of the aircraft. Since there is no need to attach weights, the weight of the aircraft can be reduced.
Furthermore, the depth of seedling planting can be adjusted by installing the upper and lower floats 1.
Both the main float 8 and the sub-float 13 can be adjusted by only operating the vertical lever 10b of 0, eliminating erroneous operations and allowing work to be carried out at the desired planting depth at all times. Furthermore, even if the machine body 1 tilts to the left or right in response to the ups and downs of the plowing platform during work, the main float 8 is fitted with a pivot that loosely fits into the vertically long through hole 11a bored in the bracket 11. Since they are attached to the fuselage 1 via the support pin 12, the main float 8 and sub-float 13 swing up and down in the left-right direction of the fuselage and always maintain a state in which they are in flat contact with the rice field (Figure 4). Therefore, only one side of the sub-float will not sink significantly and impair the straight-line performance of the aircraft, and moreover, the propulsive reaction force will be received by the main float 8 and the sub-float 13 as a whole, resulting in stable running. This means that you can maintain your sexuality.

On the other hand, since the sub-float 13 is provided behind the propulsion wheel 4 and its outer end is located inside the outer edge of the propulsion wheel 4, the sub-float 13 always follows the inside of the wheel track of the propulsion wheel 4. As a result, the mud lifted by the propulsion wheels 4 will be leveled by the sub-float 13, and the planted seedlings will not be knocked over, nor will the sub-float 13 directly knock them down. .

As shown in FIGS. 6 and 9, the sub-floats 13, 13 have connecting rods 14a extending left and right that are supported in an antagonistic manner via a coil bomb 22, so that the left and right sub-floats 13 are grounded. Even if one of the sub-floats 13 rides on a clod of soil or runs on a paddy field without water from a state where the resistance is even, and the grounding resistance suddenly increases, the connecting rod 14a is rotatably supported at its center. Therefore, the sub-float 13 with the increased ground resistance can escape to the rear and buffer the sudden change, and furthermore,
When the ground resistance of both sub-floats 13 becomes equal again, the coil bomber 22 restores it to the neutral position, so that the driver can avoid losing the bundle and impairing straight-line running performance. At times, it is possible to prevent the sub-float 13 from being muddy, and the planting performance can be greatly improved.

In short, a main float is attached to the lower central part of the aircraft on which the aircraft propulsion wheels are mounted, and a sub-float placed behind the propulsion wheels is connected to the main float via a float connection member. The central part of the connecting rod constituting the float connecting member is pivotally supported on the main float so as to be horizontally rotatable, and the connecting rod is antagonistically supported at an appropriate position on the fuselage via a bomb. Because they are connected, the main float and sub-float are integrated, and the seedling planting depth can be easily and reliably adjusted without any erroneous operation, so that the seedlings are always planted at the desired seedling planting depth. Even if the ground resistance of one of the sub-floats suddenly increases, the driver will not be able to take the steering wheel and the ability to drive straight will not be affected, and the aircraft will be able to move smoothly when turning. It is possible to significantly improve planting performance by preventing the mud pushing phenomenon of the sub-float.
In addition, since the aircraft's running reaction force can be received by the main float and the sub-float integrated with it, there is no need to make the main float particularly long rearward, and the distance between the driver's feet can be reduced. It has extremely useful new effects, such as being able to secure sufficient space as needed, and not impairing the maneuverability of the aircraft due to the long main float.

[Brief explanation of the drawing]

The drawings show an embodiment of a float device in a rice transplanter according to the present invention, in which Fig. 1 is an overall side view of the rice transplanter, Fig. 2 is an overall plan view showing the arrangement of floats, and Fig. 3 is an overall side view of the rice transplanter. is a rear side view showing the main parts,
Fig. 4 is an explanatory diagram of the operation of Fig. 3, Fig. 5 is an enlarged vertical sectional view of the main part, Fig. 6 is a perspective view showing the main part,
7 and 8 are explanatory diagrams, respectively, and FIG. 9 is an overall plan view of the float device. In the figure, 8 is the main float, 11 is the bracket, 11a is the insertion hole, 12 is the pivot pin, 13 is the sub-float, 14 and 14a are the connecting rods, 15 is the float connecting member, and 20 is the pivot shaft. be.

Claims (1)

[Scope of Claim for Utility Model Registration] (1) A main float is attached to the lower central part of the fuselage on which the propulsion wheels are mounted, and a sub-float is arranged to be located behind the propulsion wheels, and a float connecting member is attached to the main float. connected to the main float via
The central part of the connecting rod constituting the float connecting member is pivotally supported on the main float so as to be horizontally rotatable, and the connecting rod is connected to an appropriate position on the fuselage via a bomb so as to be elastically supported in an antagonistic manner. A float device in a rice transplanter that is characterized by: (2) The rice planting according to claim 1, wherein the main float is attached to the aircraft body so that the main float and the sub-float can freely swing up and down in the left and right directions of the aircraft body. Float device on the machine.