JPS6112170Y2 - - Google Patents

Description

[Detailed explanation of the invention] Conventionally, the left and right wheels were installed on the machine body via a seesaw mechanism to prevent the machine body from tilting to the left or right even if there was a difference in height on the tiller, and the planting rods on the left and right sides of the machine were used for planting. Rice transplanters in which the planting depth does not vary are already known.

When regulating the planting depth using side floats installed on the left and right sides of the aircraft, not only the center float but also the side floats slide on the leveled rice field, so the planting depth of seedlings that can be planted on the left and right sides of the aircraft is limited. In order to keep the height constant, it is necessary to set the left and right side floats at the same height relative to the aircraft.

However, when planting at the edge of a ridge, if the muddy soil at the edge of the ridge is hardened, the side float on the side away from the ridge sinks by a predetermined amount, whereas the side float at the edge of the ridge sinks by a small amount. At the edge of the ridge, the seedlings will be planted too shallow or the seedlings will fall over.

If a vertical adjustment mechanism is attached to each side float in order to improve such planting problems, the cost will be high. Since the side floats must be adjusted up and down separately, the operation becomes complicated.

Furthermore, if there are separate vertical adjustment mechanisms for the left and right sides, a mistake may occur in which the left and right side floats are set at different heights due to erroneous operation.

The purpose of the present invention is to improve the above-mentioned drawbacks, and in a rice transplanter equipped with wheels and a planting device, there are side panels on both left and right sides of the wheels near the planting device that regulate the planting depth. It is characterized in that the float is mounted so that it can be adjusted up and down in opposite directions.

To explain the embodiment shown in the drawings in more detail below, 1 has an engine 2, a hydraulic pump 3, and
Equipped with 4 transmission cases and 5 handles at the rear.
and a seedling stand 6, the front parts of swing transmission cases 8, 8 having wheels 7, 7 pivotally supported at the rear end thereof are pivotally supported on both sides of the transmission case 4 so as to be tiltable up and down. There is.

Reference numeral 9 denotes a center float that senses the ground pressure when leveling the ground, and there are leveling plates 10 on both sides of the front part.
10 protrudes like a gill, and the front part is connected to the fuselage 1 by a dogleg link 11, and the rear part is connected to the fuselage 1 by a rod-shaped link 12, so that both the front and rear parts of the center float 9 are not affected by the elevation of the aircraft. Regardless, it follows the mud surface and slides.

Further, the upper part of the bracket 14 to which the fulcrum shaft 13 that supports the upper part of the rod-shaped link 12 is fixed is formed into a stopper 14a that projects toward the rear surface of the upper part of the rod-shaped link 12, so that it is possible to turn the aircraft. When the handle 5 is lifted up, the rod-like link 12
As shown in FIG. 9, the center float 9 is prevented from rotating by the stopper 14a, and the rear part of the center float 9 is lifted up, and the valve 16, which will be described later, is held in the raised range by this raised position. The projection 14b protruding from the upper part of the lower end of the rod-shaped link 12 comes into contact with the lower surface of the aircraft body 1 when the rear part of the aircraft body 1 descends abnormally, and the center float 9 is rotated. Prevent the rear part from colliding with the aircraft 1.

Furthermore, the center float 9 does not support the fuselage 1 at all, and simply slides on the mud surface, sensing the ground pressure extremely accurately and performing a good leveling action. The fuselage tends to meander, but since a tension spring 19 is provided between the rod-like link 12 and the fuselage 1, the rear part of the center float 9 is pressed against the mud surface with a constant pressure, which improves the straightness of the aircraft. Contribute to the improvement of

Reference numeral 15 denotes a hydraulic cylinder fixed to the upper part of the transmission case 4, and the operating arm 17 of the valve 16 is connected to the front part of the center float 9 through the sensing rod 18, so that it is not possible to avoid muddy soil. The height of the machine from the plane is always accurately sensed, and the hydraulic cylinder 15 is operated according to the detected amount.
The piston rod 15a vertically tilts the swing transmission cases 8, 8 through a seesaw mechanism (not shown) and connecting rods 20, 20, so that the wheels 7, 7 move up and down.

Reference numeral 21 denotes a pair of left and right side floats, the front ends of which are directly connected to both sides of the apron support frame 22 via doglegged links 23, 23 so as to be vertically movable, and the rear ends are connected to the legs of the portal frame 24. Since the lower end of the fuselage body 1 is pivotally supported so as to be tiltable up and down, the middle part of the fuselage body 1 is supported by the left and right wheels 7, 7, and the rear part is supported by side floats 21, 21.

Further, the arm 25 welded to the middle part of the gate frame 24 is attached to a support frame 27 having a guide groove 26 at the upper part.
The support frame 27 is rotatably supported on a support shaft 28b provided rearwardly protruding from the base of the handle 5, and is erected above the support shaft 28b. A set pin 31 inserted through the upper end of the stay 29 and pushed out by a spring 30 is attached to a locking frame 3 fixed to the handle 5.
It is designed to fit into any one of the locking holes 33a, 33b, and 33c of No.2.

Furthermore, a lever 34 protruding rearward and upward from the middle part of the gate frame 24 is inserted into the guide groove 26 and is connected to the arm 2 by a toggle spring 35.
It is connected to 5.

Therefore, when adjusting the planting depth, use the lever 34.
When the floats are tilted up and down to engage with appropriate recesses in the guide groove 26, the left and right side floats 21, 21 move up and down, so that the planting depth can be adjusted.

Additionally, when planting at the edge of a ridge, if the muddy soil at the edge of the ridge is hardened, the side floats 21 in the field will sink by a standard amount, whereas the side floats 21 at the edge of the ridge will hardly sink. So the gate frame 24
If the seedlings are planted parallel to the apron 22a, the seedlings planted at the edge of the ridge will be shallowly planted.

Therefore, when the gate frame 24 is rotated clockwise in FIG. 8, that is, so that the side float 21 on the ridge side is raised, and the set pin 31 is fitted into the locking hole 33c, the apron 22a and the left and right planting rods 36,
36 is horizontal and can be planted at a predetermined depth even near the ridge.

Note that the rear part of the center float 9 is formed in a tapered shape with the rear narrowed as shown in FIG. 2, so the rear part of the center float 9 and the front parts of the side floats 21, 21 partially overlap when viewed from the side. Despite this, the flow of mud is good and there is no mud pushing against the planting position. Furthermore, the ground leveling plates 10, 10 at the front of the center float 9 are gill-shaped as described above, and their width is narrower than the width of the wheels 7, 7 as shown in FIG. , 10 washes the wheels 7, 7, and can prevent the wheels 7, 7 from carrying around mud, straw, etc.

Further, the gate frame 24 allows the lever 34 to be inserted into the guide groove 24.
When it is engaged with the recessed portion of
This is prevented by the set pin 31 fitting into the engagement hole of the locking frame 32, and the back and forth tilting is prevented by the support shaft 2.
8b and the bent portion of the upper part of the locking frame 32.

As mentioned above, this invention is a rice transplanter equipped with wheels and a planting device, and the side floats that regulate the planting depth are installed on both the left and right sides of the machine body near the planting device so that they can be adjusted up and down in opposite directions. Therefore, when planting in hardened soil at the edge of a ridge, the side floats at the edge of the ridge can be raised to a position along the soil surface by a very simple operation of moving the supporting frame up and down in opposite directions. The side floats in the muddy soil descend to equalize the planting depth on the left and right sides, which prevents extremely shallow planting and seedlings from falling over.

In addition, there is no need to adjust the left and right side floats up and down separately, so if you want to adjust the planting depth, all you have to do is attach an appropriate adjustment means such as a lever for adjusting the planting depth to the support frame and adjust the left and right side floats at the same time. It can be moved up and down by the same amount.

[Brief explanation of the drawing]

The drawings show one embodiment of the present invention,
Figure 1 is a side view of the rice transplanter, Figure 2 is a plan view of the same as above,
Figure 3 is a perspective view of the main parts, Figure 4 is a cross-sectional view of the mounting part of the side float, Figure 5 is a cross-sectional view of the locking part, Figure 6 is a rear view of the left and right tilting part of the side float, and Figure 7 is a cross-sectional view of the mounting part of the side float. The figure is a side view of the float, FIG. 8 is a rear view of the main parts during ridge work, and FIG. 9 is a side view when the aircraft is turned. 1... Body, 7... Wheels, 9... Center float, 11... Dog-shaped link, 12... Rod-shaped link, 21... Side float, 24... Gate form,
27... Support frame, 28b... Support shaft, 31... Set pin, 32... Locking frame.

Claims (1)

[Scope of utility model registration request] A rice transplanter equipped with wheels and a planting device is characterized in that side floats for regulating planting depth are installed on both left and right sides of the machine body near the planting device so that they can be adjusted up and down in the opposite direction. Planting depth regulating device for rice transplanters.