JPS63198909A - Transmission apparatus of transplanter - 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] [Industrial Application Field] The present invention relates to a transmission device for a transplanter, and relates to a seedling supply table that reciprocates from side to side in a rice transplanter or a vegetable transplanter, and a seedling supply table from which the seedlings are transferred from the seedling supply table. This is related to a transmission device for a transplanter equipped with a transplant tool for dividing and transplanting.

[Prior art]

Conventionally, as disclosed in Japanese Utility Model Application No. 61-110215, a rotating case is provided on the side of a transmission case of a transplant device so as to be rotated by transmission, and a device is locked within this rotating case on the transmission case side. A sun gear, a counter gear that meshes with the sun gear, and a planetary gear that meshes with the counter gear are provided, and a seedling transplanter is attached to the spindle of the planetary gear so that the transplanting claws of the transplanter have a closed loop shape that is long in the vertical direction. A transmission device for a transplanter configured to draw a transplant trajectory has been known. However, the sun gear, counter gear, and planetary gear in this rotating case are completely circular eccentric gears that are eccentric with respect to the shaft.

Furthermore, the power within the transplant transmission case of the transplant machine is transmitted by a perfectly circular gear so that the angular velocity of the rotary shaft of the rotary case does not fluctuate during one rotation.

[Problem that the invention seeks to solve]

In the conventional technology, it is difficult to greatly change the swinging speed of the implant by the eccentric gear in the one-turn case depending on the position of the implant, and the lower side of the implant trajectory drawn by the implant nail is narrowed in the front-rear direction. It was not possible to reduce the size of the hole after transplanting. For this reason, there have been problems such as the seedlings lodging down after transplanting and floating seedlings occurring in the paddy transplanter.

Further, the rotation of the rotary case is rotated through an angular velocity variation mechanism while the transmission in the rotary case of the conventional device is maintained, so that the angular velocity becomes high at the time of transplantation when the rotary case moves in the vertical direction. I tried a research test with this in mind, but the effect could not be expected unless the angular velocity fluctuation rate was increased considerably.If this fluctuation rate was increased, the rotating case would not be able to rotate smoothly, and the vibration would increase, causing problems during implantation. A problem has arisen in which variations occur in the implantation depth.

Means to solve problem c] This invention aims to solve the above problems.

A rotating case 11 is attached to a rotating shaft 26 that protrudes from the side of the transplanting power transmission case 5 of the transplanting machine and is driven and rotated, and the transplanting power case 11 is loosely fitted around the rotating shaft 26 within this rotating case 11. A non-circular sun gear 3o with a non-circular pitch circle that is fixed to the 11 side so as not to rotate is provided, and a non-circular counter gear 32 that meshes with this sun gear 30 and a non-circular counter gear 32 that meshes with this non-circular counter gear 32. A non-circular planetary gear 33 is provided, and this non-circular planetary gear 3
Attach the seedling transplanter 10 to the shaft 34 of 3, and turn the rotating case 11.
The rotating direction of the transplanting tool 10 and the shaft 34 for attaching the seedling transplanting device are configured to be reversed at the same rotational speed, and the rotational angular velocity is varied, so that the tip of the transplanting claw 9 equipped on the transplanting device 10 is connected to the rotating case 11. A transplanting locus P that becomes longer in the vertical direction is drawn due to the rotation of In the transplantation device, an angular velocity variation mechanism A is included in the transmission mechanism that transmits power from the prime mover side 4 to the rotation shaft 26 of the rotation case 11 so that the rotational angular velocity changes when the rotation case 11 is in a state at the time of transplantation in which the rotation case 11 is directed in the vertical direction. This is the transmission device for a transplanter equipped with.

[Operation and effect of the invention]

When the rotating case is rotated from the prime mover side, an angular velocity variation mechanism is provided in the transmission mechanism, and when the rotating case is moved in the vertical direction, the angular velocity becomes high or low. The swinging speed of the seedling transplanter during transplantation is changed by the non-circular gear transmission inside the case, so when the transplanting claw of the seedling transplanter intervenes in the soil surface to transplant the seedling, the hole left after transplanting will be reduced. becomes smaller,
This eliminates the situation where the seedlings fall down after transplanting, or where the transplanted seedlings float up to the surface of the water and flow away, such as when transplanting in paddy fields. Moreover, it is not necessary to make the fluctuation in the rotational angular velocity of the rotating case extremely large, and the vibration of the aircraft body can be reduced.

〔Example〕

As an embodiment of the present invention, a riding-type transplanter in which a seedling supply stand is located at the upper front side and a transplanting device is arranged at the lower rear side will be described in detail.

Reference numeral 1 denotes a transplanter, and the transplanter in this embodiment has a passenger towing vehicle body 2.
It is attached to the rear part of the machine so that it can be moved up and down via a lift link 3,
The power to the transplanter 1 side is configured to be transmitted from a prime mover 4 installed on the tow vehicle body 2 side.

The transplanting machine 1 has a transplant transmission case 5 as a mother body, and a seedling supply table 6 is supported by rails 7.8 on the upper part of the case 5 so as to be able to move from side to side. A transplant device 10 having claws 9 is attached to the front and rear outer surfaces of a rotating case 11.

12.13 Ground leveling float is shown.

To explain the transmission mechanism inside the transplanted transmission case 5, 14
is a transmission shaft, and a set of bevel gears 17 and 18 are connected to an input shaft 16 which is transmitted through a propeller shaft 15 which is transmitted from the prime mover 4 on the towing vehicle body 2 side through an appropriate transmission mechanism.
It is transmitted and rotated via.

Reference numeral 19 denotes a counter shaft, and this shaft 19 is rotatably installed within the transmission case 5. A set of eccentric gears 20 is provided between the counter shaft 19 and the transmission shaft 14.
21, the eccentric gear 20 is wedged on the transmission shaft 14 and rotates integrally with the transmission shaft 14, and the eccentric gear 21 is connected to the counter shaft 19.
It is wedged in.

Reference numeral 22 denotes a lead cam shaft, and this shaft has a continuous groove in the left and right ends, and a lead pawl 24 attached to the lead metal 23 is engaged with this groove to fix the lead metal 23 to the shaft 25. The moving shaft 25 is protruded outward from the left and right of the transplant transmission case 5, and both ends thereof are connected to the seedling supply stand 6, and the lead cam shaft 22 is rotated. Then, the seedling supply table 6 is configured to reciprocate from side to side. A speed change transmission mechanism B is provided between the camshaft 22 and the transmission shaft 14.

Reference numeral 26 denotes a rotating shaft, and a chino 29 is wound around this shaft 26 between a sprocket 27 wedged on the counter shaft 19 and a sprocket 28 wedged on the rotating shaft 26 for transmission.

The rotating shaft 26 protrudes to the outside of the transplanted transmission case 5, and its tip is formed into a square shaft.

Further, the transmission of the rotating shaft 26 to the counter shaft 19 is performed by providing a small sprocket 27 and a large sprocket 28 so that the rotating shaft 26 is rotated at a speed of 172.

The rotating case 11 is configured such that its front-rear center position is fixed to the tip of the rotating shaft 26 so as to be rotated.

The transmission mechanism inside the rotating case 11 will be explained as follows.
A non-circular sun gear 30 whose pitch circle is not a perfect circle is attached to the transplanted transmission case 5 and is connected to the rotating shaft 2.
The rotary shaft 26 is fixed to a metal 31 covering the rotary shaft 26, and is inserted through the rotating shaft 26 so as not to be rotated. 32 is a non-circular counter gear that meshes with the sun gear 30.

Reference numeral 33 denotes a non-circular planetary gear, which is rotatably installed on the rotating case 11 and is integrally fixed to a shaft 34 that projects outward. This shaft 34 is transmitted and rotated at the same rotational speed in a direction opposite to the rotational direction of the rotating case 11, and is configured such that only its rotational angular velocity varies with respect to the rotational angular velocity of the rotating case 11.

The seedling transplanting tool 10 is attached to this shaft 34, and the tips of the transplanting claws 9 of the transplanting tool 10 are configured to draw a vertically long closed-loop transplanting trajectory P.

Then, due to the transmission of the non-circular gear in the 1-rotation case 11, 1
When the rotating case 11 is facing upward and downward at the time of transplantation, the rotational angular velocity of the transplanting tool 10 is set to be high so that the transplanted nails 9 can quickly escape from the soil surface.

It goes without saying that this setting is determined by the setting of the sun gear 30.

Reference numeral 35 denotes a seedling pushing claw, which is attached to the lower end of a lifting rod 38 that is operated by a cam 36 that rotates integrally with the rotating case 11 provided in the case of the seedling transplanter 10 and a lever 37 that is interlocked with this cam 36. The seedlings held by the transplant claws 9 are pushed out at the time of transplantation.

39 indicates a spring.

Next, to explain the operation on the upper side, the transplanter 1 towed by the towing vehicle body 2 is driven by a transmission shaft 14 in the transplant transmission case 5 from the propeller shaft 15 .

A moving shaft 25 is reciprocated from side to side via a lead metal 23 by a lead cam shaft 22 which is transmitted from this shaft 14 through a transmission mechanism B, and the seedling supply table 6 is reciprocated from side to side.

On the other hand, a counter shaft 19 is transmitted and rotated from the transmission shaft 14 via an eccentric gear 20.21 as an angular velocity variation mechanism A, and from this counter shaft 19, a sprocket 27. The rotating shaft 26 is connected to the 172 through the chino 29 and the sprocket 28.
It is rotated by transmission with a reduction ratio of .

The rotating case 11 is rotated by the rotation of the rotating shaft 26, and the angular velocity becomes high or low during one rotation.

In the case of this riding-type transplanter, it is at low speed when heading in the vertical direction.

By this rotation of the rotating case 11, the spindle 34 is transmitted and rotated from the sun gear 30 through the counter gear 32 and the planetary gear 33, and the seedling transplanter 10 fixed to the spindle 34 is operated.

That is, the movement of the seedling transplanter 10 is set so that the rotational angular velocity becomes faster when the rotating case 11 is moved vertically by non-circular gear transmission, so that the transplanting claws can transplant the seedlings into the soil surface. The rotation speed to escape from the soil becomes faster,
The planting hole can be made smaller after transplanting.

In this way, the angular velocity changing mechanism A and the rotating case 11
By both the transmission mechanism using the non-circular gear inside, the planting hole after transplanting the seedlings with the seedling transplanter 10 can be made smaller, and the seedlings may float up when transplanting in a deep water paddy field or fall down after transplanting. Unforeseen situations can be eliminated.

That is, in this case, in which the lower rear transplanting device from the upper front seedling supply table 6 divides the seedlings and transplants them into the soil, there is a transplanting point when the rotary case 11 faces in the vertical direction as shown in FIG. The angular velocity of the transplantation device 10 is slowed down to avoid the transplanted claw from being rotated backwards while the aircraft is moving forward, and the operating speed of the transplantation device 10 is controlled by the transmission mechanism inside the rotating case 11 when the rotating case 11 is facing downward. By increasing the speed, the transplanted nail 9 can escape from the soil quickly.

On the other hand, in the walking-type transplanting device shown in FIG. 6, in which the seedling supply table 6 is located in the upper rear position and the transplanting device is located in the lower front position,
Unless the angular velocity changing mechanism A is set so that the angular velocity of the rotating case 11 becomes high when the rotating case 11 is facing downward, as shown in FIG. This will make the planting hole larger when transplanting.

Therefore, in a walk-behind transplanter in which the seedling supply table 6 is located at the rear, the eccentric gears 20 and 21 of the angular velocity changing mechanism A are set to be attached to the spindle at the time of transplantation when the rotating case 11 faces in the vertical direction. 11 must be configured so that the rotation speed is high.

In addition, when the riding-type seedling supply table 6 is located at the rear of the transplanting device, the settings of the angular velocity variation mechanism A can be adjusted when widening or narrowing the distance between the transplanted seedlings in the front-back direction. It is desirable to change the rotation case 11 at a low angular velocity when transplanting, in order to increase the travel speed relative to the number of times the transplant tool 10 acts on the soil surface when transplanting a large number of plants. This will lengthen the graft hole. Therefore, in such a case, it is desirable that the rotational angular velocity of the rotating case 11 at the time of transplantation be set at a high speed. Therefore, for this reason, a transplanter for a wide variety of plants should be called a one-passenger type transplanter. The rotating case 11 must also be set to rotate at high speed at the time of implantation.

The transplanting tool 10 is transmitted by the transmission mechanism as described above, and its transplanting claws 9 engage the seedlings from the seedling supply platform 6, which reciprocates horizontally and horizontally, and plunge into the lower soil surface to release the seedlings. and transplant them one after another. At this time, the planting hole after transplanting does not become long back and forth, but becomes small, so the transplanted seedlings do not lie down or float, and are transplanted in an accurate posture.

[Brief explanation of the drawing]

The drawings show an embodiment of the present invention, in which Fig. 1 is a side view of a riding-type transplanter, Fig. 2 is a plan view thereof, Fig. 3 is a sectional view of essential parts of the transmission mechanism, and Fig. 4 is a simplified diagram of the transmission mechanism, FIG. 5 is a side view showing the transmission mechanism inside the rotating case, FIG. 6 is a side view of the main parts of the walking transplanter, and FIG. 7 is a simplified diagram of the transmission mechanism. Symbols in the figure: 1 is a transplanter, 4 is a prime mover, 5 is a transplant transmission case, 9 is a transplant nail, 10 is a transplant tool, 11 is a rotating case, 2
6 is a rotating shaft, 30 is a sun gear, 32 is a counter gear,
33 is a planetary gear, and 34 is a shaft. A indicates the angular velocity fluctuation mechanism, and P indicates the implantation locus.

Claims (1)

[Claims] A rotating case 11 is attached to a rotating shaft 26 that protrudes from the side of the transplanting power transmission case 5 of the transplanting machine and is driven and rotated, and the transplanting power case 11 is loosely fitted around the rotating shaft 26 within this rotating case 11. A non-circular sun gear 30 with a non-circular pitch circle that is fixed to the 11 side so as not to rotate is provided, and a non-circular counter gear 32 that meshes with this sun gear 30 and a non-circular counter gear 32 that meshes with this non-circular counter gear 32. A non-circular planetary gear 33 is provided, and this non-circular planetary gear 3
Attach the seedling transplanter 10 to the shaft 34 of 3, and turn the rotating case 11.
The rotating direction of the transplanting tool 10 and the shaft 34 for attaching the seedling transplanting device are configured to be reversed at the same rotational speed, and the rotational angular velocity is varied, so that the tip of the transplanting claw 9 equipped on the transplanting device 10 is connected to the rotating case 11. A transplanting locus P that becomes longer in the vertical direction is drawn due to the rotation of In the transplantation device, an angular velocity variation mechanism A is included in the transmission mechanism that transmits power from the prime mover side 4 to the rotation shaft 26 of the rotation case 11 so that the rotational angular velocity changes when the rotation case 11 is in a state at the time of transplantation in which the rotation case 11 is directed in the vertical direction. A transmission device for a transplanter equipped with