JPH0244670Y2 - - Google Patents

Description

[Detailed Description of the Invention] The present invention relates to an improvement of a float support device for a paddy field working machine.

In general, floats attached to rice field work machines such as rice transplanters are made of lightweight synthetic resin and are shaped like a hollow boat.The rear part of the float is pivoted to the machine frame, and the front part swings up and down. The float is freely supported so that the front part of the float swings up and down about the rear pivot point according to the unevenness of the rice field. As a mechanism for swingingly supporting the front part of the float, a conventional mechanism, for example as shown in FIG. A long hole 24 in the vertical direction
The link 24 with a is rotatably supported, and the guide rod 27 that protrudes laterally from the machine frame 26 is fitted into the elongated hole 24a, and the washer 28 and split pin 2 are inserted.
9 or the like to prevent the link 24 from coming off, the number of members increases, and there are defects such as noise generation due to the swinging of the link 24 during work.

In addition to the above-mentioned examples, there have also been pantograph type systems for a long time, in which the tip of a link pivoted on the machine frame and the tip of a link pivoted on the float side are connected, but these are similar to the ones mentioned above. There were also defects that made the structure even more complex and expensive.

In view of these conventional deficiencies, the present invention is an improvement on the conventional technology.It has a simple structure by reducing the number of component parts, and also reduces the noise caused by the swinging of the float during operation. This is a complete improvement on the deficiencies of .

Next, an embodiment of the device of the present invention will be described based on FIGS. 1 to 4.

Reference numeral 1 denotes a machine frame of a one-wheel, two-row walking type rice transplanter, with an engine 2 mounted on the front thereof and supported by wheels 3 that run on a tiller. Planting rods 4 that swing up and down are provided on both rear sides of the machine frame 1, and a seedling stand 5 is provided in front of the planting rods 4. 6 is a handle extending from the rear of the machine frame 1 to the rear of the machine body. The wheels 3 are supported by a transmission case 7 provided on the engine 2 so as to be movable up and down and fixed, and can be adjusted up and down and fixed by an appropriate mechanism.

Reference numeral 8 denotes synthetic resin floats provided on both sides of the wheels 3, the rear of which is supported by the rear of the machine frame 1 via a planting depth adjustment device 9. That is, 10 is a fulcrum provided on a fulcrum seat 11 projecting upward from the rear of the float, and 12 is a connecting rod having one end pivoted to the fulcrum 10 and the other end pivoted to the machine frame 1. 13 uses the bottom end as the fulcrum 1
The depth adjustment rod is pivotally supported at 0, and one side of the depth adjustment rod is provided with a plurality of locking recesses 13a at the top and bottom.By selectively engaging these with locking pins 14 provided on the machine frame 1, the The depth can be adjusted. The depth adjustment rod 13 is biased toward the locking pin 14, and has a grip portion 13b provided at the top thereof. The depth can be quickly adjusted by simply moving the grip part 13b up and down and releasing the grip part 13b. Reference numeral 15 denotes a bracket protruding upward at the front of the float 8, which is integrally molded with the float 8 and is provided with a space 15a extending vertically and penetrating the body in the front-rear direction. 16
is a guide rod that protrudes outward from the machine frame 1 and has its tip bent toward the rear, and the bent portion 1
6a is inserted into the space 15a of the float 8. The float 8 is guided by a guide rod 16 and can swing up and down about a fulcrum 10 at the rear. 17 is bracket 15
a marking section provided on the rear surface of the space section 15;
It is provided on the side of the wheel 3 at the proper position 17a of the wheel 3.
is displayed to indicate that when the depth of the tiller changes and the guide rod 16 deviates from the above-mentioned proper position 17a during running, the wheels 3 should be adjusted up or down by appropriate means.

In another example shown in FIG. 5, a bracket 19 formed integrally with the float 18 has a vertical space 19a passing through it in the lateral direction, and is formed in an arc shape centered on a rear pivot point. The space 19a
A guide rod 20 protruding laterally from the machine frame 1 is inserted through.

Next, the operation and effects of the device of the present invention will be explained. During planting work, the float 8 is positioned by operating the handle 13b of the depth adjustment rod 13 according to the hardness and softness of the rice field and the depth of the tiller.
The planting rod 4 moves up and down to scrape off the seedlings from the seedling stand 5 and plant them in the field. The float 8 sliding on the rice field is pivoted at the rear by a fulcrum 10, and the space 15a provided in the front bracket 15 is connected to the guide rod 16.
Since the float 8 is supported so as to be able to swing up and down, if the field surface is uneven, the tip of the float 8 automatically moves up and down about the fulcrum 10, and slides while following the unevenness of the field surface. At this time, the only swinging support member at the front of the float 8 is the bracket 15, which has a small number of members, is lightweight and has a simple structure, and the space 15a is connected directly to the guide rod 16 without using any links or the like.
Therefore, the float 8 can follow the unevenness of the rice field extremely smoothly.

Moreover, the space 15a is made of synthetic resin and the float 8
Since it is integrally molded with the guide rod 16, the contact with the guide rod 16 is damped and no noise is generated due to swinging.

In addition, the bracket 1 installed in front of the float 8
5 is formed through the space 15a in the longitudinal direction of the fuselage, and the bent part 16a of the guide rod 16 is inserted through the space 15a in the longitudinal direction of the fuselage, thereby forming the space 15a into a simple linear shape. Despite this, it is possible to reliably prevent the front part of the float 8 from swaying horizontally, and at the same time, to make its vertical swinging smooth.

Furthermore, if the tiller changes and the relationship between the wheels 3 and the float 8 deviates from the standard state, and the guide rod 16 protrudes upward or downward from the proper position 17a of the marking section 17, the wheel may be removed by an appropriate means from the driving operation section. 3 can be adjusted up or down.

When the marking portion 17 is provided in parallel in the space 15a as shown in FIGS. 2 and 3, the appropriate position 1
The positional relationship between the guide rod 7a and the bent portion 16a of the guide rod 16 is very easy to understand, and the vertical adjustment operation of the wheel 3 can be performed reliably.

In this way, the present invention is based on the float 8 of the paddy field working machine.
In order to support the float 8 below the machine frame 1, the rear part of the float 8 is rotatably supported around a fulcrum 10, and a bracket 15 having a space 15a in the vertical direction is provided integrally with the float 8 at the front part of the float 8. At the same time, the tip of a guide rod 16 provided on the body side is inserted into the space 15a, so that the front part of the float 8 can freely swing up and down around the rear fulcrum 10 within the range of the space 15a. With this structure, the swing support structure of the front part of the float 8 allows the tip of the guide rod 16 on the fuselage side to be inserted into the space 15a of the bracket 15 integrated with the float 8 without using complicated members such as links. It has a simple structure with a reduced number of component parts, and has a float of 8.
It has the characteristics that the noise caused by the rocking of the float 8 is significantly reduced, and that the float 8 can follow the unevenness of the field extremely smoothly.

[Brief explanation of the drawing]

Figures 1 to 4 show an embodiment of the device of the present invention, with Figure 1 being a side view of the rice transplanter, Figure 2 being a side view of the rice transplanter, and Figure 2 being a side view of the rice transplanter;
The figure is a perspective view showing the main parts, Figure 3 is a rear sectional view of the same as above, Figure 4 is a side view showing the pivot at the rear of the float, and Figure 5 is a side view of the front part of the float of another embodiment. , FIG. 6 is a side view of the front part of a conventional float. 1... Machine frame, 8... Float, 10... Fulcrum,
15...Bracket, 15a...Space part, 16...
...Guidance rod, 17...Indication section.

Claims (1)

[Claims for Utility Model Registration] (1) In order to support the float 8 of the paddy field work machine below the machine frame 1, the rear part of the float 8 is rotatably supported around a fulcrum 10, and the front part of the float 8 is Bracket 15 having vertical space 15a
is provided integrally with the float 8, and the tip of a guide rod 16 disposed on the fuselage side is inserted into the space 15a to move the front part of the float 8 around the rear fulcrum 10 within the range of the space 15a. A float support device for a paddy field working machine, characterized in that it is configured to be able to swing vertically. (2) The paddy field working machine according to claim 1 of the utility model registration claim, characterized in that the space portion 15a is formed to penetrate in the longitudinal direction of the machine body, and the guide rod 16 is disposed in a direction along the longitudinal direction of the machine body. float support device. (3) The float support device for a paddy field working machine according to claim 1, wherein the bracket 15 is provided with a marking portion 17 for indicating the proper position of the wheel 3.