JPS586442B2 - swing shearlins kinaueki - Google Patents

Description

[Detailed Description of the Invention] The present invention comprises two transmission cases each having a built-in power transmission mechanism for transmitting the driving force from the engine to the wheels, which are pivotally mounted to the left and right sides of the aircraft body so as to be able to swing vertically. Each paddy wheel is mounted on a shaft at the free end, and these transmission cases are simultaneously pressed downward by a spring to provide restoring force to the paddy wheel as it swings up and down, allowing the paddy wheel to follow the unevenness of the tiller. This invention relates to a swing-wheeled seedling transplanter that obtains reliable thrust by rotating the swing wheel.

In the above-mentioned seedling transplanter with swing wheels, if the tiller is extremely uneven or if the machine makes a sharp turn, it becomes difficult for the swing wheels to follow the tiller, making it impossible to obtain sufficient thrust and making it unstable to maintain the machine horizontally. Become.

For example, when the aircraft is turned back during seedling planting work to continue planting seedlings in the adjacent unseed planting row, the aircraft will turn 180 degrees. The vehicle is tilted outward during the turn, and this tilted state is maintained for a while without being restored to the horizontal state even after the vehicle starts traveling in a straight line.

Therefore, in a seedling planting machine having multiple seedlings planted on the left and right sides, there is a drawback that while the above-mentioned inclined state is maintained, one row is deeply planted and the other is shallowly planted.

Therefore, this invention provides a seedling transplanter with swing wheels that can reliably follow the swing wheels even when the tiller is extremely uneven, and can quickly restore the machine to a horizontal state even if the machine body is tilted. This is what I am trying to do.

An embodiment of the present invention will be described below in detail based on the drawings. In Fig. 1 and Fig. 2, 1 is an engine mounted on a frame 2, 3 is a main transmission part fixed to the rear part of the frame 2, The main mission section 3 is appropriately powered by the engine 1.

4 is a seedling planting device, which includes a seedling platform 5 on which sheet-shaped seedlings are placed and moves back and forth in the left and right directions, and a seedling planting claw 6 that takes out one seedling from the seedling platform 5 and plants it in the field. and an auxiliary transmission part 7 that drives the seedling mounting table 5 and the seedling planting claws 6, and four seedling planting claws 6 are arranged in parallel to form four rows of planting.

8 is a power case for connecting the main transmission section 3 and the sub-mission section 7 and transmitting power;
supports the above-mentioned aircraft with a float-like sliding body.

A transmission case 1 is provided on both left and right sides of the main transmission section 3.
One end of 0a>10b is pivotally connected to the transmission case 10.
The free end of at10b swings up and down, and paddy wheels 11a and 1lb are mounted on shafts at this free end.

The rice field wheels 11a and 1lb are driven by the power from the main transmission section 3, and therefore the transmission case 10
A suitable power transmission mechanism is built inside a and lOb.

A protruding plate 12a t1 2b is fixedly protruded from the upper part of the front side of the transmission cases 10a, 10b, and the upper part of the protruding plate 12atl2b is attached to the rod 13a via a pivot member.
One end of t13b is connected, and this rod 13a>13b
The other end is connected to a cushion mechanism built into the frame 2.

Further, one end of springs 14a, 14b for individually pressing and urging the paddy wheels 11a, lib downward is fixed to the upper part of the protruding plates 12a, 12b, and the other end is connected to the upper part of the power case 10. The two ends of the rocking plate 16 are respectively locked to both ends of the rocking plate 16 which is pivotally supported by a pivot pin 15.

Further, the swing plate 16 is provided to be fixed in its swing by a fixing pin 17, and the fixing pin 17 is provided in a detachable manner.

Fig. 3 and Fig. 4 show the cushion mechanism of the paddy wheels 1la, 1ib, one end of which is pivotally connected to the protruding plates 12a, 12b by a pin 18at18b, and the other end of the rod 13a, 13b forming a link mechanism. It is pivotally connected to the rods 19a and 19b via pins 20at20b, and the L-shaped rod 1
The intermediate portions of 9a and 19b are pivotally connected to both ends of the movable rod 22 via pins 21a and 2lb, and the L-shaped rod 19a>19b
The other end is pivotally connected to both ends of the connecting rod 23 via pins 24a and 24b.

Therefore, when the rod 13a is pushed in the direction of the arrow A, the L-shaped rods 19a and 19b1 of the link mechanism move the connecting rod 23, and the rod 13b moves in the direction of the arrow.As a result, one of the paddy wheels 11a or 11b If the paddy wheel 1lb or 11a moves upward, the other paddy wheel 1lb or 11a moves downward and is interlocked in opposite directions.

Further, a cylindrical shaft 25 is fixed to the middle part of the movable rod 22, and this cylindrical shaft 25 is attached to a cylindrical body 2 fitted to a threaded rod 26.
7 so as to be able to slide on it.

The screw rod 26 is pivotally attached to the frame 2, and a sprocket 28 is fixed to one end thereof, and power is transmitted between the screw rod 26 and a sprocket 29 located outside the frame 2 via a chain 30. The sprocket 29 is fixed to the end of a rod 31 that is pivotally connected to the outside of the frame 2, and this rod 31 is powered by a handle 32 provided at the aircraft control position, and by rotating the handle 32, the The screw rod 26 is rotated.

Further, female threaded portions 34, 34' which are threadedly engaged with the threaded portion 33 of the threaded rod 26 are fixed to the cylindrical body 27 for protecting the threaded rod 26 that is loosely fitted into the threaded rod 26. A flange 36 is connected to the female threaded portion 34.

Further, bolts 36, 36 passing through the flange 35 are fixed to the movable rod 22, and these bolts 36.3
A saucer 37, 37 is located at the outer end of the saucer 37.6.
A spring 38 is provided between the flange 37 and the flange 35,
38 is interposed.

That is, the springs 38, 38 are the saucers 37, 37,
It acts to attract the movable rod 22 through the bolts 36, 36, and therefore simultaneously presses the left and right paddy wheels 11a>1lb downward through the rods 13a, 13b.

If the threaded rod 26 is rotated to move the flange 35, the movable rod 22 will follow and move, so the paddy wheel 11. The setting positions of a and 1lb are adjusted.

Next, the follow-up state due to unevenness of the tiller when the paddy wheel 11a>1lb is explained.

First, it is assumed that the swing plate 16 is fixed by the fixing pin 17.

Fig. 5 a and b show the case where the tiller is in a flat state, and the paddy wheels 11a and 11b are at the same height, and if the tiller is uneven in the same way with respect to the left and right paddy wheels 11a>1lb, The vertical swing of the transmission cases 10a and 10b is performed by the rod 13.
Since at13b is moved by the same amount of movement, in this case, the pressing force of springs 38 and 38 and the spring 14a are
, 14b, the paddy wheels 11a, 1lb
will follow the unevenness of the tiller.

As shown in FIGS. 6a and 6b, if the paddy wheel 1lb sinks due to the inclination of the tiller, the transmission case 10b will move downward and the rod 13b will be pulled in the direction of the arrow.

Then, the rod 13a is pulled in the direction of arrow A via the L-shaped rod 19b1 connecting rod 23 and the L-shaped rod 19a, and the paddy wheel 11a moves upward via the transmission case 10a, and the left and right paddy wheels 11a, 1lb The aircraft can pick up the plowing platform, provide reliable and even thrust, and keep the aircraft in a horizontal position.

In other words, the sinking of the paddy wheel 11b means that the other paddy wheel 11a is pushed up by the tiller, and this pushing up moves the rod 13a in the direction of arrow A, causing the L-shaped rod 19a1, the connecting rod 23, and the L-shaped rod 19a to move. Rod 1 via character rod 19b
3b in the direction of the arrow, the paddy wheel 1lb is brought into contact with the tiller, and both parties can grab the tiller.

When this state changes to the horizontal plowing platform shown in Fig. 5, the paddy wheel 1lb that has sunk will be pushed up by the plowing platform and will recover quickly, but the paddy wheel 11a that has moved up will It is not affected by the action of the tiller.

However, since it is forcibly pushed down by the spring 14a, it is quickly restored to its original position, and both paddy wheels 11
at1lb can quickly take over the tiller.

Although FIG. 6 describes the case where the paddy wheel 11b is lowered and the other paddy wheel 11a is moved upward, when the other wheel 11a is lowered, the above operation is reversed.

The conditions shown in Figures 7a and 7b are when the machine is turned to the right, and the paddy wheels 11a on the outside of the turn are subjected to centrifugal force during the turn, and the ground pressure of the plowing plate is applied so that it bites into the plowing plate. The paddy wheel 1lb on the inner side of the turn is in a floating state.

However, the ground pressure of the tiller wheel 11a of the paddy field wheel 11a is
This pushing up pushes the rod 13a in the direction of arrow A, which in turn pushes the other rod 13b in the direction of arrow A, and the paddy wheel 1lb is grounded on the tiller.
Both paddy wheels 11a, 11i can carry plowing plates.

Then, when the machine completes its turn, the paddy wheels 10a, which have been under the ground pressure of the tiller until now, are lifted away from the tiller due to the release of the centrifugal force, and therefore one-sided wheel 1lb is driven, impairing the straight running of the machine. At the same time, the horizontal state is also impaired.

However, in this invention, the paddy wheel 11a on the floating side is forcibly pushed down by the spring 14a, and this pushing down also causes the other paddy wheel 1lb to be pulled up, so both the paddy wheels 11at1lb are rotated. Immediately after that, the tiller was removed to obtain uniform thrust and restore the horizontal state of the aircraft.

In the case of a left turn, the above-mentioned operation is reversed.

Furthermore, although the above description of the operation is based on the case where the rocking plate 16 is fixed, if the fixing pin 17 is removed to release the fixed state, the pressing force of the springs 14a and 14b will be applied to the paddy wheel 11ayl-
Since it is released when the upper and lower differentials of 1b are moved, the running becomes stable and the straightness improves in places where the tiller has continuous steps, such as at the edge of a ridge.

As shown in the embodiments above, according to the present invention, an engine and a main transmission are provided at the front, a seedling planting device is provided at the rear,
The left and right transmission cases of the fuselage are connected by a power case, and the left and right transmission cases with built-in power transmission mechanisms are pivoted from the main mission so that they can swing up and down, and the paddy wheels that transmit power are attached to the free ends of these transmission cases. In a swing-wheeled seedling transplanter in which the transmission case is simultaneously pressed downward by a spring, a protruding plate is fixedly protruded from the upper part of the transmission case near the front, and the transmission case extends between the protruding plates. In order to maintain the left and right transmission cases at the same height, a link mechanism is provided to transmit swinging motion in mutually opposing vertical directions, and a pair of identical springs are stretched between the projecting plate and the power case, respectively. Because of the energization, the left and right paddy wheels can be made to follow the unevenness of the tiller, and even if the unevenness of the tiller acts unevenly on the left and right paddy wheels, one of the paddy wheels can be forced to follow the unevenness of the tiller. Even if the paddy wheel lifts up, the paddy wheel that is not in contact with the tiller is forcibly pushed down by the spring, and this pushing down causes the paddy wheel that is in contact with the other tiller to be pulled up. Both rice paddy wheels are grounded on the tiller to provide reliable and even thrust on both sides, and at the same time, the machine maintains a good horizontal state, allowing for extremely straight forward travel and good seedling planting work.

Furthermore, when the seedling transplanter is driven on the road, the left and right paddy wheels independently buffer the impact, making the machine stable and extremely easy to maneuver.In addition, the load on the wheels is supported by two types of springs, so the wheels can be lowered. It has the effect of reducing the operating force required and making it easier to operate.

[Brief explanation of drawings]

The drawings show one embodiment of the present invention, the first being a side view and the second being a side view.
The figure is a plan view of the main parts, Figure 3 is a perspective view of the cushion mechanism,
FIG. 4 is a plan view thereof, and FIGS. 5 to 7 are explanatory diagrams showing the operating state. 1 0 a, 1 0 b”...Transmission case, 11a,
1lb...Paddy wheel, 14a, 14b...
...Spring, 19at19b...L-shaped rod,
23... Connecting rod, 38, 38... Spring.

Claims (1)

[Claims] 1 The engine and transmission are installed in the front, the seedling planting device is installed in the rear, and the power case is connected between them.The left and right transmission cases with built-in power transmission mechanisms are pivoted so that they can swing vertically. In a swing wheel seedling transplanter in which paddy wheels to which power is transmitted are mounted on the free ends of these transmission cases, and the transmission cases are simultaneously pressed downward by springs, A protruding plate is fixedly protruded from the upper part, and a link mechanism is provided between the protruding plates for swinging and transmitting the transmission case in mutually opposing up and down directions, and a pair of identical springs are installed between the protruding plate and the power case, respectively. A seedling transplanter with swing wheels, characterized in that the left and right transmission cases are energized to maintain the same height by tensioning them.