JPS642576Y2 - - Google Patents

Description

[Detailed description of the invention] This invention provides a sliding grounding body and running wheels that can be moved up and down to selectively ground the aircraft to support the weight of the aircraft at the rear of the self-propelled aircraft. The seedling planting section is provided with a grounding float that is located above the grounding body in side view and that is wrapped in planar view so as to be movable up and down, and for planting seedlings. The present invention relates to a riding rice transplanter provided with a drive mechanism for raising and lowering the grounding body in order to maintain a constant depth.

The above-mentioned riding rice transplanter uses a grounding body during operation to suppress the significant mud pushing that occurs when the machine rotates when using wheels. By using wheels, consideration was given to smooth running, and by wrapping the float and grounding body vertically, the aircraft was made compact with a small width. The float and grounding body are raised and retracted when the vehicle is traveling on a road, etc., to prevent them from being damaged by collisions with raised parts of the ground, thrown up stones, etc. Therefore, when driving on the road etc., in order to regulate the planting depth shallowly, or
If you forget to raise and store the float that has been lowered to the working level and only the grounding body is raised, the grounding body will collide with the float and the float may become deformed.
Problems such as damage may occur.

The present invention enables the raising and retraction of the grounding body to the highest possible level in the same manner as before, while preventing deformation and damage caused by the collision of the float with the grounding body caused by forgetting to raise and store the float. With the goal.

Next, embodiments of the riding rice transplanter of the present invention will be described based on illustrative drawings.

As shown in Figs. 1 and 2, a pair of left and right rod-shaped sliding ground contact bodies 3, 3 that support the weight of the vehicle in cooperation with the wheel 1 are provided at the rear of a self-propelled vehicle equipped with a single driving and steering wheel 1 and a driver's seat 2, and a seedling planting section 4 is connected to the rear of the vehicle. The self-propelled vehicle is configured to transmit rotational power from the self-propelled vehicle to the seedling planting section 4, and three ground floats 5a, 5a, 5b are provided at the seedling planting section 4.
and are arranged in parallel in the lateral direction of the machine body, and further, of these, those 5a, 5a located on the left and right outer sides are each located above the ground body 3 located on the same side as them in a side view and are wrapped around them in a plan view, so that four rows of seedlings can be planted as the machine travels.

As shown in FIGS. 3 and 5, a member 6 whose rear end side of each of the floats 5a, 5a, and 5b is connected and supported to the seedling planting machine frame is swingable and swingable and fixed. The control lever 7 is configured to be able to freely swing up and down and fix it integrally around the axis _P1 , and by operating the lever 7, all the floats 5a, 5
a, 5b are constructed so that they can be raised, lowered, and fixed relative to the seedling planting machine frame, and all floats 5
By changing the mounting height of the seedling planting parts a, 5a, and 5b to the machine frame, the seedling planting depth can be changed and set. On the other hand, as shown in FIG _.
It is constructed so that it can be vertically swung around the seedling planting section 4, and the seedling planting section 4 can be raised and lowered in a reverse manner by raising and lowering the grounding body. Then, the center float 5b among the floats 5a, 5a, 5b is
The front end side link mechanism 9 and the rear end side link mechanism 10 are connected to the seedling planting unit machine frame so as to be able to rise and fall freely, and the support shaft P is linked to the rise and fall of the center float 5b of the rear end side link mechanism 10. A link 10a that swings _around the cylinder 8 is connected to the control valve V for the cylinder 8 by a mechanical interlocking mechanism 11, and the link 10a swings around the link 10a.
A first spring 12 for allowing a certain amount of relative displacement between the push rod 1a and the push/pull rod 11b, and a first spring 12 for biasing the center float 5b downward and biasing the control valve V to the grounding body lowering position. By attaching a second spring 13, the control valve V is automatically operated so that the ground pressure of the center float 5b is within the range set by the first spring 12 even if the mud depth changes. It is structured as follows. Even if the depth of the mud changes, the planting depth remains the same as the float 5a,
The grounding body 3 is automatically raised and lowered to the set height by adjusting the installation height of the mounting heights 5a and 5b, so that work can be carried out while maintaining a substantially constant planting depth.

Note that the swinging member 14 shown in FIGS. 3 and 4 is
The biasing force of the second spring 13 is changed and adjusted, and the operating fitting 15 of the push/pull rod 11b is
, and the operation lever 16
The ground contact pressure of the center float 5b can be changed and set artificially according to the hardness of the mud, and the ground contact body 3 can be manually raised and lowered. The swinging member 17 is used to change and set the biasing force of the second spring 13, and is wire-linked to the operating tool of the planting clutch. The seedling planting section 4 is automatically raised as the ground pressure of the seedling planting section 4 decreases. Further, the contact member 29a shown in FIGS. 3 and 4
and 29b are used to press the operated portion 12a of the push/pull rod 12 to operate the control valve V to the neutral position when the grounding rod 3 reaches the end of its upward stroke or the end of its downward stroke.

As shown in FIGS. 1, 2, and 5, a pair of left and right free-rotating auxiliary wheels 18, 18 can be freely raised and lowered at the rear of the self-propelled body by swinging a support arm 19. A swinging member 20 is connected to the support arm 19, and a locking pin 21 is provided on the swinging member 20 so as to be able to be inserted into and removed from a fixing member 22 on the body side. 18 constitutes a locking mechanism that can be freely operated to release for lifting and lowering, and when traveling on the road, both wheels 18, 18 are grounded instead of the grounding body 3, and these wheels 18, 18 and the running wheel 1 are connected to each other. The structure is such that the weight of the aircraft is supported by the cooperation of the two.

In order to configure the auxiliary running wheels 18, as shown in FIG. 6, a rubber grounding member 18b is attached to the metal wheel body 18a, and
A pair of ball bearings 23,
23 is fitted by shrink fitting.

On the other hand, in each of the grounding bodies 3, 3, the third
As shown in FIGS. 7 and 7, the proximal end of the grounding body 3 is pivotally connected to the support member 24, which is movable and driven by the cylinder 8, by a connecting shaft 25, and to the support member 24, A long hole 26 is formed to enable relative rocking between the grounding body 3 and the connecting shaft 25, and the grounding body 3 is erected with the grounding body 3 being slidably inserted into the long hole 26. A pair of left and right nuts 28, 28, which tighten the support member 24 toward the grounding body, are screwed onto the pin 27, and the friction caused by the tightening causes the support member 24 and the grounding body 3 to connect with the side float 5a of the grounding body 3. They are configured to swing together in a state that allows the relative swinging due to the impact. In other words, during work, the grounding body 3, as shown in FIGS. 3 and 7, due to the ground reaction force and the relative rocking action of the nut 28
When the pin 27 is connected to the support member 24 at the upper end of the elongated hole 26 and is operated upward, the holding action of the nut 28 causes it to remain connected to the support member 24 during the operation. Even if the side float 5a, which had been lowered low, is raised while driving on the road, the ground contacting body 3 is raised, and the ground contacting member 3 hits the float 5a. , as shown in Figure 5,
The structure is such that the grounding body 3 remains in its contact position and only the support member 24 rises, thereby preventing damage to the float.

Note that the long hole 26 is connected to the grounding body 3 and the support member 24.
A structure in which the support member 24 is relatively moved in parallel,
The relative movement form and arrangement location of the grounding body 3 and the support member 24 can be changed to various configurations, such as a configuration in which the grounding body 3 and the support member 24 are interposed in an interlocking system with the cylinder 8. The cylinder 8 is referred to as a drive mechanism 8, and a long hole 26 is formed between the drive mechanism 8 and the grounding body 3 in order to specify their relative movement.
It is called.

Further, instead of the nut 28, a spring, rubber, etc. can also be used, and these are collectively referred to as the elastic holding mechanism 28.

In summary, the present invention provides the above-described riding rice transplanter with the following: between the grounding body 3 and the drive mechanism 8;
Flexible portion 26 for enabling their relative movement
and an elastic holding mechanism 28 is provided in the flexible portion 26 to allow the grounding body 3 to operate integrally with the drive mechanism 8 in a state that allows the relative movement due to the contact between the grounding body 3 and the float 5a. It is characterized by

In other words, the grounding body 3 uses the ground reaction force or the restoring force of the elastic holding mechanism 28 during work, and the elastic holding mechanism 2
8, the upper stroke end of the flexible part 26 is connected to the drive mechanism 8, and when the upward stroke end is operated, the holding action of the elastic holding mechanism 28 allows the flexible part 26 to be connected to the drive mechanism 8 during operation. While in the connected state, it operates integrally with the drive mechanism 8 and rises. Therefore, even if the raised and retracted operation of the grounding body 3 is performed without raising the float 5a, which had been lowered to the lowest level, to the highest level in order to change from the raised storage state to the working state or to shallow planting state,
Even if the grounding body 3 hits the float 5a, due to the collision and the relative motion allowing action of the flexible portion 26 and the elastic holding mechanism 28, the grounding body 3 remains at the position where it hits the float 5a, and only the drive mechanism 8 operates. This makes it possible to prevent deformation and damage of the float 5a due to collision with the grounding body 3, thereby extending the life of the float.

Moreover, when lifting the grounding body 3 is performed after remembering to raise the float 5a that has been lowered low, the grounding body 3 rises in the connected state during work, so the grounding body 3 is The damage prevention function of the grounding body 3 does not need to be degraded.

[Brief explanation of the drawing]

The drawings illustrate embodiments of the riding rice transplanter according to the present invention, and FIG. 1 is an overall side view, FIG. 2 is an overall plan view, FIG. 3 is a side view of the grounding body lifting/lowering operation mechanism, and FIG.
5 is a side view of the wheel mounting portion, FIG. 6 is a sectional view of the wheel, and FIG. 7 is a sectional view taken from FIG. 3 in the direction of arrows. 3... Grounding body, 4... Seedling planting part, 5a... Float, 8... Drive mechanism, 18... Wheel, 26...
Flexible portion, 28...Elastic holding mechanism.

Claims (1)

[Scope of utility model registration request] At the rear of the self-propelled body, a sliding grounding body 3 and running wheels 18, which are selectively brought into contact with the ground to support the weight of the body, are provided so as to be able to be raised and lowered. The planting section 4 is provided with a grounding float 5a which is located above the grounding body 3 in a side view and wraps in a planar view so as to be movable up and down, thereby making it possible to maintain a constant seedling planting depth. A riding rice transplanter is provided with a drive mechanism 8 for raising and lowering the grounding body 3, and a flexible part is provided between the grounding body 3 and the drive mechanism 8 to enable relative movement therebetween. 26, and an elastic holding mechanism 28 is provided in the flexible portion 26 to allow the grounding body 3 to operate integrally with the drive mechanism 8 in a state that allows the relative movement due to the contact between the grounding body 3 and the float 5a. A riding rice transplanter with the following features: