JPS62118813A - Upward movement limiter of side float in rice field working machine - Google Patents

Abstract

(57) [Summary] This bulletin contains application data before electronic filing, so abstract data is not recorded.

Description

DETAILED DESCRIPTION OF THE INVENTION [Field of Industrial Application] The present invention relates to an upward movement regulating device for a side float in a rice paddy working machine such as a walk-behind rice transplanter, a seeder, a fertilizer, or the like.

[Prior Art and Problems to be Solved by the Invention] Generally, some rice field working machines of this type are equipped with side floats that swing up and down to the left and right of the machine body. However, since the front end of this side float is suspended so that it can move up and down, when the aircraft is accompanied by the side float and the aircraft tilts toward the center of rotation of the side float, the side float remains free to move up and down. If this is the case, the supporting action of the side floats will not be obtained at all, and especially in the case of axis-type paddy field work machines, the side floats will have to rotate while supporting the tilted machine only with the wheels. This will result in an extremely unstable condition. Therefore, it has been proposed, for example, in Japanese Patent Laid-Open No. 59-1328, to restrict the upward movement of the side floats using a regulating body, and to support the aircraft with the regulated side floats, thereby allowing the aircraft side floats to accompany the aircraft in a stable manner.
This is disclosed in Publication No. 10, etc. However, these regulating bodies merely restrict the upward movement of the side floats, and when the side floats are rotating, they do not restrict the upward movement of the side floats on the side toward the center of rotation of the side floats. Therefore, the machine is not actively tilted towards the side float's rotation side. After accompanying.

It is necessary to raise the aircraft to a normal posture, which imposes a work burden on the worker.Furthermore, in order to restrict the upward movement of the side float on the side float's center of rotation, the side float whose tilt is restricted to the upward movement of the side float. Therefore, the radius of circulation of the side float is limited, and there is a problem in that it cannot be made smaller.

[Means for Solving the Problems] In view of the above-mentioned circumstances, the present invention was devised for the purpose of providing an upward movement regulating device for a side float in a paddy field working machine that can eliminate these drawbacks. In a paddy field working machine, which is provided with regulating bodies for regulating the upward movement of side floats arranged on the left and right sides of one machine, the above-mentioned two regulating bodies are used to operate the operating tools that are interlocked and connected to the regulating bodies. The front part of the side float is pushed down in conjunction with the push-down position, and upward movement is restricted at the pushed-down position.

With this configuration, the present invention restricts the upward movement of the side float by pressing down the front side of the side float and restricting the upward movement at the pressed down position, so that when the side float is accompanied by the side float, the rotation of the side float is restricted. The outer side of the row center is positively lifted, thereby making it easier to carry out accompanying work with the side floats.

[Example] Next, an example of the present invention will be described based on the drawings. In the drawing, 1 is a single-wheel walking type rice transplanter, and the front of the machine is an engine 2, a transmission 3. A planting section 5 having a seedling stand 4 with a low front and high back; a handle 6; left and right side floats 7, which will be described later; It is composed of various members such as a chenoke case 9 placed on the left side of the running wheels 8. On the other hand, reference numeral 10 denotes a fuselage frame that connects the engine section at the front of the fuselage and the working section 5 at the rear, and a chain transmission mechanism to the planting section 5 is housed within the fuselage frame. Further, reference numeral 10a denotes a guide frame arranged to sandwich the engine section, the running wheels 8, and the drive mechanism of the planting section 5 from the left and right sides.

The front end of the side float 7 has a bendable connecting arm 7.
a, the guide frame loa is vertically movably suspended, and the rear end is pivotally attached to a pivot shaft 7d, which is further connected to the guide frame 10.
It is set so that the height can be adjusted freely up and down using a pivot 7b provided at a as a fulcrum, and thereby the planting depth can be adjusted. On the other hand, reference numeral 11 denotes a regulating body disposed above the side float 7, and the base end of the regulating body 11 is attached to a bracket 10 provided on the guide frame 10a.
It is pinned to a pin 11a so as to be able to swing freely, and is biased and supported by a bomb 11b so as to move upward and be in a storage position away from the side float 7.

Furthermore, one end of an inner wire 12 is connected to the base end of the regulating body 11, and as described later, by tensioning the inner wire 12, the regulating body 11 is connected to the ammunition flb.
It remains immovable against the
By pushing down the front side of the side float 7 (see the imaginary line state in FIG. 3), further upward movement is restricted. The side float 7 is designed to descend as much as possible until the stopper 7C provided on one link of the connecting arm 7a comes into contact with the other link, as shown in FIG. 6Y.

Reference numeral 13 denotes an auxiliary frame supported between the left and right handles 6, and an operating tool for the regulating body 11 is provided approximately at the center of the auxiliary frame 13. That is, the auxiliary frame 13 is provided with a bracket 16, and the lower end of this bracket 16 is connected to the base end 14a of the first operating tool 14.
is pivotably supported around a pivot 17 so as to be swingable and movable in the axial direction. The first operating tool 14 can be swung along the guide hole 18a of the lever guide 18, and can also be moved to the regulating groove position [18b], which will be described later, by receiving the biasing force of the bullet 17a wound around the pivot shaft 17. Release groove position 18
c is press-fitted. On the other hand, a substantially central portion of an actuating body 19 is rotatably supported by a support shaft 20 at the base end 14 a of the first operating tool 14 . This operating body 2
0, the other end sides of the outer wires 12a of the regulating body 11 corresponding to the left and right side floats 7 described above are disposed in a reverse left-right relationship, and outer receivers 21 for receiving these outer wires 12a, respectively, are provided. Further, the base end portion of the second operating tool 22 is integrally fixed above the support shaft 206Furthermore, left and right support plates 23 are provided protruding from the auxiliary frame 13. , and the other end portions of the inner wires 12 corresponding to the side floats 7 are connected to the support plate 23 in a reverse relationship.

A lever guide 24 for the second operating tool 22 is attached. The second operating tool 22 is guided by a guide hole 24a provided in the lever guide 24, and can be switched in the left-right direction as described later. The first operating tool 14 and the second operating tool 22 assembled in this way
is located on the back of seedling stand 4.

The operating tools 14 and 22 are designed to fit within the range that does not protrude from the rear end and upper end of the handle 6. The operation of these operating tools 14 and 22 will be explained below. First, the first operating tool 14 is normally located at the release position 18 by the biasing force of the bullet 11b provided on the regulating body 11. In this state, the regulating body 11 is moving upward, and therefore both side floats 7 are in a free state in which the upward movement M is not restricted. Therefore, when stopping the aircraft, etc., if the first operating tool 14 is operated from the release position [18c in the direction of arrow A to position it at the restriction position 18b,
The support plate 23 continues to move in parallel in the direction of arrow A, and as a result, both inner wires 12 are tensioned simultaneously by the pushing action of both outer receivers 21. For this reason, both the regulating bodies 11 move downward against the bullet ttb, and both the side floats 7 are restricted from moving upward to the depressed position with the front side depressed. The fuselage support effect by the floats 7 is ensured, and the single side float 7 can be used as a stand when the aircraft is stopped.

On the other hand, regarding the second operating tool 22, the second operating tool 22 is normally located at a substantially central position due to the biasing force of the first bullet aircraft 11b. From this state, if the second operating tool 22 is now operated to the right along the guide hole 24a (in the direction of arrow B) and engaged with the guide groove 24b on that side, the pushing action of the outer receiver 21 on the right side will cause , only the inner wire 12 of the left side float 7, which is opposite to the corresponding one, is stretched. As a result, the left side regulating body 11 moves downward and pushes down the left side float 7, and its upward movement is restricted at this position. As a result, the left side of the aircraft was actively lifted and supported by the left side float 7 due to the downward movement and upward movement restriction action of the left side float 7, and the side whose upward movement was restricted became higher. In this state, the right side float of the aircraft can accompany the aircraft.If the left side float is to accompany the aircraft, the second operating tool 22 can be operated to the left (in the direction of arrow C). , the right side float 7 is pressed down by the regulating body 11 and its upward movement is regulated, and in this state the left side float can accompany it, and in this way, the right or left side of the second operating tool 22 The side corresponding to the operation is set to be the rotation center side of the side float.

On the other hand, 25 is a sensing float arranged in front between the side floats 7, and the sensing float 25 has a rear end pivotally connected to the lower end of the transmission case 3.
The front end is pivotally connected to the lower end of the bending link arm 26. The tip of this link arm 26 is connected to the guide frame 10.
The lower end of the sensing rod 27 is further pivotally connected to the link arm 26, and the upper end of the sensing rod 27 is connected to the actuating plate 28a of the hydraulic valve 28.
It is pivotally connected to 28b. When the planting work is deep planting, the sensing float 25 is pushed up by the ground resistance of the rice field, which causes the sensing rod 27 to move upward and rotate the actuating plate 28a in the direction of the arrow. 28
is changed from the neutral state to the side that causes the hydraulic cylinder 29 to extend. As a result, the hydraulic cylinder 29 is extended and the chain case 9 is moved downward to raise the height of the machine relative to the running wheels 8, correcting deep planting.On the contrary, in the case of shallow planting, , the hydraulic valve 28 is switched to the cylinder reduction side by the reverse sensing operation of the sensing float 25, thereby moving the chain case 9 upward, lowering the height of the machine and correcting the shallow planting. In this way, the planting depth is automatically controlled using the sensing float 25 provided separately from the side float 7. Further, one end of a connecting rod 30 is connected to the actuating plate 28, and the other end of the connecting rod 30 is interlockingly connected to a hydraulic lever 31 provided on the handle 6. By operation, the hydraulic valve 28 is manually switched and controlled prior to sensing operation by the sensing float 25.

In the embodiment of the present invention configured as described above, the planting operation of the planting claws that is timed to the traveling speed of the aircraft causes the planted seedlings placed on the seedling platform 4 to be planted in units of plants. It will be scraped off by seedlings and planted on the rice field.

In such seedling planting work, when the -stroke work process is completed, the aircraft side float accompanies the aircraft at the headland and moves on to the next work process. If it is now the rotation of the right side float.

While holding the handle 6 with one hand (for example, the right hand),
Grip the second operating tool 22 with the other hand and operate it in the direction of arrow B, that is, to the right, so that it engages with the kite groove 24b. Then, as described above, the left regulating body 11 moves downward and the left side float 7 is pushed down, and upward movement is restricted at this position. Therefore, the rice transplanter 1 receives an active push-up support action from the left side float 7 that has been pushed down, and naturally assumes an inclined position with the left side raised higher, while the right side float 7, on the other hand, is not subject to any upward movement restriction. It remains free. And in this state.

Furthermore, if necessary, the body can be further tilted toward the side float rotation side, and the side float rotation work can be easily performed, just like a cat cart. After the side float rotates, if the second operating tool 22 is disengaged from the guide groove, the side float 7 will be freed from the above-mentioned upward movement restriction and will no longer have a downward action, thereby reducing the downward movement of the aircraft body. This eliminates the tilt and automatically returns to the original running position.

When rotating the left side float, conversely, by operating the second operating tool 22 to the left (in the direction of arrow C), the right side float 7 is pushed down and upward movement is restricted at this position. Therefore, in this state, the left side float is rotated. On the other hand, when stopping the aircraft, if the first operating tool 14 is operated in the direction of arrow A, both side floats 7 are simultaneously pushed down and upward movement is restricted as described above. Even in the case of a rice transplanter, the left and right side floats 7 can be used as stands as they are, and will not fall over.

As described above, in the present invention, although the upward movement of the side float 7 is restricted, the upward movement is restricted by pressing the front side of the side float 7 downward and at the pressed down position. Since the upward movement is restricted, when the side floats of the aircraft are together, the downward movement of the side floats 7 is pushed down and the upward movement of the aircraft is restricted. The outer side of the aircraft will be actively lifted and automatically tilted, and in this state it will be possible to immediately carry out accompanying work with the fuselage side floats. And after accompanying the side float,
When the upward movement restriction of the side floats 7 is released, the downward force exerted by the side floats 7 is eliminated, and the aircraft automatically returns to its original position. Therefore, even if the upward movement of the side floats 7 is restricted as in the past, there is no need for tilting or raising the aircraft body. Moreover.

When the side floats accompany each other, the side float 7 on the side of the center of rotation of the side floats is in a free state without any upward movement restriction, so the accompanying radius of the side floats is not restricted in any way by the upward movement restriction of the side floats. The side float can be rotated within a small radius without causing any damage. Furthermore, since the side float 7 is restricted from moving upward with the front side pushed down,
Conversely, the rear side will move upwards. For this reason, when the fuselage side floats rotate, the mud pushing action by the rear part of the side floats 7 that are pushed down is completely eliminated.
This makes it possible to ensure even better circulation of the side floats.

In addition, in the case where both side floats 7 are used as a stand by restricting their upward movement at the same time, the side floats 7 are
Since the upward movement is restricted in the depressed state, the traveling wheel 8
It is possible to stop even when the wheels 8 are lowered, and therefore, when resuming work, the work can be resumed in the same state without lowering the traveling wheels 8, and work efficiency can be improved here as well. become.

Furthermore, in the operating tool for regulating the upward movement of the side float 7, the second operating tool 22 of the embodiment
When the right side float accompanies, by operating it to the right, the left side float 7 is pushed down and its upward movement is restricted to support the aircraft, and when the left side float 7 accompanies the aircraft, By operating the right side float 7 to the left, the right side float 7 is pushed down and its upward movement is restricted to support the aircraft.

Therefore, even if the machine, such as a -shaft type rice transplanter, is inevitably inferior in balance to a two-wheeled rice transplanter, the side floats can be stabilized by adding support to the body by one of the side floats 7. Can perform accompanying work. Moreover, in that case, if the second operating tool 22 is operated laterally to either the left or right side of the rotating side of the side float, the operated side becomes the rotating center side of the side float, and therefore, the second operating tool 22 The operating direction of the operating tool 22 matches the rotation side of the side float, and the second operating tool 22 is operated in the rotating direction of the side float, which is a very natural lever operation, so that one aircraft can quickly accompany the side float. This makes it possible to reliably prevent operational errors and quickly and easily perform side float rotation work, which is said to be particularly difficult with the -shaft type. In the embodiment, when the right side float rotates, it is explained that the second operating tool 22 is operated with the right hand, but the second operating tool 22 may be operated with the left hand. This can be selected arbitrarily by one worker.

Furthermore, in the embodiment, if the connection between the inner wire 12 and the outer wire 12a is reversed in the second operating tool 22, the upward movement of the side float 7 on the operated side is restricted; , it is possible to perform an upward movement restriction operation based on the natural idea that the operating side lifts up.

Moreover, as described above, the first operating tool 14 and the second operating tool 22, which selectively restrict the upward movement of the side float 7 and simultaneously restrict the upward movement of both, are located on the back side of the seedling stand 4. , the operator's hand is located in a position that is extremely easy to operate, which further improves operability.
Since these operating tools 14.22 are designed so that they do not come out from the rear end or top surface, there is no possibility that these operating tools 14.22 will get in the way of work. It is convenient because it can be operated with either the left or the right hand without distinction.

In addition, in the embodiment, the sensing means for sensing the planting depth is
Instead of the side floats 7, a dedicated sensing float 25 is provided, which is a so-called three-float system. For this reason, for example, even if the side float 7 is restricted in upward movement as described above when the side float is rotating, the sensing operation by the sensing float 25 will cause the travel axle 8 to move downward (the aircraft body). Therefore, in order for the side floats to rotate, the front of the fuselage can be raised by pushing down the handle 6, regardless of the side floats 7 whose upward movement is restricted.
The auxiliary work of automatically raising the traveling wheels 8 using the sensing floats 25 floating above the field surface can be performed, resulting in a marked improvement in work efficiency.

It should be noted that the present invention is of course not limited to the above-mentioned embodiment, and the point is that the upward movement of the side float is restricted by pushing down the front side of the side float.

Any means may be used as long as the upward movement is restricted at the depressed position.

[Operations and Effects] In summary, since the present invention is configured as described above, when restricting the upward movement of the side float, the upward movement of the side float is always restricted with the front side being pushed down. Become.

Therefore, when the aircraft side floats are rotating, if the upward movement of the side floats on the outside of the side floats is restricted,
The aircraft is pushed down by the side floats and actively tilts toward the center of rotation of the side floats. Moreover, since the side float on the side of the center of rotation of the side float is free, the accompanying radius of the side float is not restricted by the upward movement restriction.

Not only can the work burden on the worker be significantly reduced during the side float rotation work, but the side float can exhibit extremely excellent rotation performance. On the other hand, even when the side float is used as a stand by restricting its upward movement, the side float is restricted in its upward movement in a depressed position, so it can function as a support for the aircraft without lowering the running wheels. Therefore, when resuming work, it is possible to resume work without raising the traveling wheels by simply canceling the upward movement restriction, thereby significantly improving work efficiency. It is.

[Brief explanation of drawings]

The drawings show an embodiment of the upward motion regulating device for side floats in a paddy field working machine according to the present invention.
The figure is an overall side view of the rice transplanter, Figure 2 is an overall plan view of the same as above, Figure 3 is a side view showing the swinging state of the side floats,
FIG. 4 is a rear view of the operating tool, and FIG. 5 is a side view of the same. Figure 6 x, y, and z are Figure 4 (7) X, Y, respectively.
A view taken in the direction of the Z arrow, FIGS. 7X and 7Y are a side view and a front view of the main part of the sensing mechanism, respectively, and FIG. 8 is a hydraulic circuit diagram. In the figure, 7 is a side float, 11 is a regulating body, 14°2
2 is an operating tool.

Claims (1)

[Scope of Claims] 1) In a paddy field working machine, in which regulating bodies are provided for regulating the upward movement of side floats arranged on the left and right sides of the machine body, both of the regulating bodies are operated in conjunction with the regulating bodies. A device for regulating upward movement of a side float in a paddy field working machine, characterized in that the front side of the side float is pushed down in conjunction with the operation of a tool, and the upward movement is limited at the pushed down position. 2) The operating tool is interlocked and connected to both side floats, and its operating direction is left and right, and by operating the operating tool in either the left or right direction, the operating tool moves with respect to the center of rotation of the side floats. 2. The device for regulating upward movement of a side float in a paddy field working machine according to claim 1, wherein the outer side float is limited in upward movement at a depressed position. 3) A patent claim characterized in that the operating tool is connected to both side floats in an interlocking manner, and the upward movement of both side floats is simultaneously regulated at the depressed position by the operation of the operating tool. An upward movement regulating device for a side float in a paddy field working machine according to item 1.