JP2947265B2 - Seedling machine - Google Patents

Description

Description: BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a seedling transplanter having a structure in which two transplanting tools alternately take seedlings from a seedling mounting table and transplant the seedlings to a field. . 2. Description of the Related Art Conventionally, as shown in Japanese Patent Publication No. Sho 49-17806, two transplanting tools mounted on a rotating case driven and rotated move along a transplantation locus and move. There was a seedling transplanter configured to alternately take seedlings from a plant and transplant them to a field. In this conventional seedling transplanter, the above-mentioned two transplanting tools are disposed at the front side of the handle provided on the rear end side of the fuselage, and are arranged in the front and rear middle part of the fuselage. The configuration was as follows. [0003] In a configuration in which the two transplanting tools take alternately the seedlings from the seedling mounting table and transplant them to the field as described above, the two transplanting tools are placed in any position. It has not been proposed to stop at. The above-mentioned conventional one has a configuration of a walking-type seedling transplanter. However, when a riding-type seedling transplanter is provided with the above-described two transplanting tools, the two types of transplanting are used. It is assumed that the tool is arranged near the rear end of the fuselage, where it is largely rotated by a rotating case and moves with a transplantation trajectory. [0004] In such a configuration,
When the two implants are stopped, depending on the stop positions, the implants may stop in a state where the implants protrude upward at the rear end of the fuselage. It is considered that when a foreign object approaches the rear end of the aircraft, such as when placing an object or moving in a narrow warehouse, the implant is likely to be damaged by contacting the other object. [0005] In addition, depending on the stop position of the implant, the implant may protrude below the fuselage and stop, so that even in this case, the implant is considered to be easily damaged. Furthermore, depending on the stop position of the transplant tool, when the transplant tool is rotated again, the seedling may stop at a position where it is not immediately transplanted to the field, and in this case,
The gap between the transplant start operation and the time when the seedlings actually begin to be transplanted to the field becomes large, and it becomes difficult for the seedlings to start to be aligned at the ridge when reciprocating in the field and transplanting. It is also conceivable that the workability will be poor. Therefore, the present invention has a configuration in which two transplanting tools mounted on a rotating case driven and rotated move along a transplantation locus to alternately pick up seedlings from a seedling mounting table and transplant the seedlings to a field. In a seedling transplanter, when two transplanting tools are arranged near the rear end of the machine, it is difficult for the transplanting tools to be damaged by contact with other objects, and the seedlings are actually transferred to the field at the time of the transplant start operation. It is an object of the present invention to stop the two implanting devices at a position where the displacement at the start of implantation is as small as possible. According to the present invention, in order to solve the above-mentioned problems, two transplanting tools 14a and 14b mounted on a rotating case 15 driven and rotated move along a transplantation locus. In the seedling transplanter configured to take the seedlings alternately from the seedling mounting table 13 and transplant them to the field, the two transplanting tools 14a
14b is disposed near the rear end of the fuselage, and the two
When the a.14b is stopped, it stops at a position where the rear implanting device is lower than the frontal implanting device, and the position immediately before the front implanting device divides the seedling from at least the seedling mounting table 13. And after the transplanter on the rear side transplants the seedlings to the field, and on the leveling floats 16, 17, 1
7. The seedling transplanter is characterized in that it moves to a position higher than the lower surface of No. 7 and stops. In the seedling transplanter constructed as described above, at the time of transplanting operation, the two transplanting tools 14a and 14b move along the transplantation trajectory to alternately pick up the seedlings from the seedling mounting table 13 and transplant them to the field. I do. Then, in order to interrupt or terminate the transplant operation, the two transplant tools 14a
-When 14b is stopped, the rear implanting device stops at a position lower than the front implanting device, and the front implanting device at least until the position immediately before dividing the seedling from the seedling mounting table 13. Move and stop, and after the transplanter on the rear side transplants the seedlings to the field and at the leveling floats 16, 17, 17
It moves to a position higher than the lower surface of and stops. Accordingly, the present invention is directed to the present invention, in which the two implanters 14a and 14b are disposed near the rear end of the fuselage, and when the two implanters 14a and 14b are stopped, the rear implants 14a and 14b are stopped. The tool stops at a position where the tool is lower than the transplanting tool on the front side, and the tool on the front side moves and stops at least to a position immediately before splitting the seedlings from the seedling mounting table 13, and transplants on the rear side. After transplanting the seedlings to the field, and the leveling float 16,1
Since it is configured to move to a position higher than the lower surface of 7, 17 and stop, the rear end of the body is in a posture as low as possible, and the implanters 14a and 14b do not protrude below the body. The two transplanting tools 14a and 14b are stopped, and the two transplanting tools 14a and 14b are stopped at such a position that the difference between the transplant start operation and the time when the seedlings are actually transplanted to the field is as small as possible. It will be. Therefore, the present invention provides two implanting devices 14a.
14b is located near the rear end of the fuselage and stops at a position where it is difficult for other objects to come into contact with the implants 14a and 14b from above or below, and the implants 14a and 14b are not easily damaged. In addition, seedlings begin to be transplanted to the field in response to the transplantation start operation, and it becomes easier to align the seedling starting position at the ridge when reciprocating in the field and performing transplantation work. Workability is good. An embodiment of the present invention will be described in detail with reference to the drawings. Reference numeral 1 denotes a passenger towing vehicle, which has a steering frame 5 protruding from a front upper portion of a vehicle body 4 having a front wheel 2.2 for steering and a rear wheel 3.3 for allowing a steering handle 6 to be supported thereon.
An engine 7 is mounted on the vehicle body behind the steering handle 6.
A control seat 9 is provided on the upper part of the vehicle. Reference numeral 10 denotes a transmission support case for the rear wheels 3.3. Numeral 11 denotes a transplantation device, which is mounted on the rear part of the vehicle body 4 and is located rearward at a predetermined left and right distance from the main transmission case 12a located at the front and the main transmission case 12a. On the upper part of the transplantation transmission case 12 composed of three sub-transmission cases 12b to be provided, a seedling mounting table 13 which is inclined so that the front becomes upper is supported so as to reciprocate left and right. At the rear end of the auxiliary transmission case 12b, a rotating case 15 on which the implanters 14a and 14b are mounted is mounted on a shaft.
2, a center leveling float 16 and left and right side leveling floats 17, 17 are mounted so that the front part can move up and down. Reference numeral 18 denotes an elevating link mechanism, which is an upper link rod 1.
8a and the base side of the lower link rod 18b are pivotally connected to the vehicle body 4, and the rear ends of both links are pivotally connected by a vertical link 18c. The transplant transmission case 12 is connected to the vertical link 18c via a support shaft 19. The upper link 18a is provided so as to be movable up and down by a hydraulic cylinder device 20. 2
A hydraulic switching valve 1 is mounted on the main transmission case 12a so as to be interposed between the integral projection frame 22 and the center leveling float 16, and is switched by the vertical movement of the float 16. Thus, the hydraulic cylinder device 20 is operated to automatically set the ground contact pressure of the center leveling float 16 to a range suitable for transplantation. The hydraulic switching valve 21 can be arbitrarily switched by an elevating operation lever 23 attached to the side of the control seat 9 so that the transplanting device 11 can be operated to elevate and lower. Reference numeral 24 denotes a stop clutch, which is mounted on a transmission shaft 25 for branching and transmitting power to the transmission portion on the side of each sub-transmission case 12b in the main transmission case 12a. The stop clutch 24 can be moved by being biased by a spring 27 to the transmission shaft 25 to a clutch drive gear 26 having a clutch claw 26a that is freely rotatably attached to the transmission shaft 25 and transmitted and rotated. Further, a clutch body 28 having a clutch claw 28a that is wedge-mounted on the transmission shaft 25 and is integrally rotated is mounted so that the clutch claws 26a and 28a can be disengaged from each other. When the clutch pin 29 abuts, the clutch body 28 is moved against the transmission shaft 25 against the spring 27.
The number of the implanting tools 14a and 14b mounted on the rotating case 15, that is, two clutch cams 30 are provided so that the clutch pawls 26a and 28a can be disengaged from moving upward. When the transmission shaft 25 is "disengaged" at two locations during one rotation due to the operation of the stop clutch 24 of the multi-position fixed position stop type, the implant 14a of the rotating case 15 is always provided.
14b is set to stop at a higher level than the lower surface of the leveling floats 16, 17, 17. Further, the transplanting tool 14a or 14b on one side is located immediately before dividing the seedling from the seedling mounting table 13 side, and the transplanting tool 14b or 14a on the other side is located above the lower surface of the leveling float immediately after transplanting the seedling. Setting to stop is even more appropriate. That is, in the side view of FIG. 1, after the transplanting tool 14a on one side splits the seedling from the seedling mounting table 13 side, and after the transplanting tool 14b on the other side transplants the seedling, the two transplanting tools 14a. Although the state where 14b has been rotated to substantially the same height is shown, the implanters 14a and 14b set and stopped as described above stop before rotating to the positions of the implanters 14a and 14b shown in FIG. Therefore, the two implanting devices 14a and 14b
Stops at a position where the posterior implant is lower than the anterior implant. FIG. 4 shows a stop position of the implanters 14a and 14b, for example. The clutch pin 29 is interlocked with the lifting operation lever 23 by a wire 31. When the hydraulic switching valve 21 is switched to the side where the transplantation device 11 is raised, the wire 31 is loosened and the spring pin is used. 29 is moved downward to contact the taper side surface of the cam body 30 so that the clutch 24 is turned off. Reference numeral 32 denotes a wire for interlocking the hydraulic pressure switching valve 21 and the operation lever 23. Reference numeral 33 in the hydraulic circuit of FIG. 4 denotes a hydraulic pump, 34 denotes a tank, and 35 denotes a relief valve. Next, the operation of the above example will be described. The seedlings are placed and accommodated in each of the seedling mounting stands 13... While the riding tractor 1 is running, the ground leveling floats 16, 17, 17.
17 is brought into contact with the soil surface of the paddy field, and when each part is transmitted and rotated, the transmission shaft 25 is rotated, and the clutch 24 in which the clutch claws 28a and 26a of the clutch body 28 and the clutch drive gear 26 are engaged is in the "on" state. , The rotating case 1 is connected via the respective transmission mechanisms of the branched sub-transmission cases 12b.
Are transmitted and rotated, and the two transplanting tools 14a and 14b attached thereto move while describing the transplantation locus, and the two transplanting tools 14a and 14b alternately reciprocate left and right. From 13..., The seedlings are divided by one plant and transplanted to the soil surface that is leveled by the lower leveling floats 16, 17, and 17. Therefore, seedlings are planted at high speed with little vibration. During the transplanting operation, when the levee approaches and turns, the raising / lowering operation lever 23 is operated to switch the hydraulic pressure switching valve 21 to raise the transplanting device 11. At this time, the wire 31 is relaxed, and the clutch pin 29 is moved down by the spring. Then, the pin 29 comes into contact with the cam body 30 of the rotating clutch body 28, and the clutch body 28
7, the clutch pawl 28a of the clutch body 28 is disengaged from the clutch pawl 26a of the clutch drive gear 26, and the transmission shaft 25 is stopped. In this case, since the clutch body 28 is provided with the two cam bodies 30, the transmission shaft 25 is stopped at two places during one rotation, and the transmission shaft 25 is immediately Stops,
For this reason, the rotating cases 15, 15 are stopped by half a rotation when the clutch is stopped. Therefore, the transplanting device 11 does not split the seedlings during the ascent and releases the seedlings, and the seedlings are not scattered on the soil surface. Next, when the seedling plant 11 is lowered after turning, the grounding floats 16, 17, and 17 are brought into contact with the ground, and then the clutch pin 29 is disengaged from the cam body 30. Then, the clutch 24 is turned “on” and transplantation is started. In this seedling transplanter, two transplanting tools 14a and 14b are arranged near the rear end of the fuselage, and when the two transplanting tools 14a and 14b stop exercising, the rear transplanting tool is higher than the front transplanting tool. Stopped at the lower position, and the front-side transplant tool moved and stopped at least to a position immediately before splitting the seedling from the seedling mounting table 13, and the rear-side transplant tool transplanted the seedling to the field. Later and leveling float 16,1
Since it is configured to move to a position higher than the lower surface of 7, 17 and stop, the rear end portion of the body is in a posture as low as possible and the implanting devices 14a and 14b do not protrude below the body. The two transplanting tools 14a and 14b are stopped, and the two transplanting tools 14a and 14b are stopped at such a position that the difference between the transplant start operation and the time when the seedling is actually transplanted to the field is as small as possible. It will be. Therefore, this seedling transplanter has two transplanting tools 14
14a and 14b are located near the rear end of the fuselage and stop at a position where it is difficult for other objects to come into contact with the implants 14a and 14b from above or below, and the implants 14a and 14b are damaged. In addition, it is difficult to start transplanting seedlings to the field in response to the transplantation start operation, and it is easy to align the planting start position of the seedlings at the ridge when reciprocating in the field and performing transplantation work The workability is good.

BRIEF DESCRIPTION OF THE DRAWINGS FIG. 1 is an overall side view of a seedling plant. FIG. 2 is a plan view of the implantation device. FIG. 3 is an operation mechanism diagram of the implanting device. FIG. 4 is a side view showing an example of the state of the implanting device when operation is stopped. [Description of Signs] 13: Seedling mounting table 14a / 14b: Transplant tool 15: Rotating case 16/17: Leveling float 24: Clutch

──────────────────────────────────────────────────続 き Continued on front page (58) Field surveyed (Int.Cl. ⁶ , DB name) A01C 11/02

Claims (1)

(57) [Claims] In the seedling transplanter, the two transplanting tools 14a and 14b mounted on the rotating case 15 driven and rotated move along the transplantation locus to alternately pick the seedlings from the seedling mounting table 13 and transplant them to the field. When the two implanters 14a and 14b are arranged near the rear end of the fuselage and the two implanters 14a and 14b are stopped, the stop is performed at a position where the rear implanter is lower than the front implanter. And, the transplanting tool on the front side moves and stops at least to a position immediately before dividing the seedlings from the seedling mounting table 13, and the transplanting tool on the rear side transplants the seedlings to the field, and the landslide flow is completed. A seedling transplanter characterized in that the seedling transplanter is configured to move to a position higher than the lower surface of the ports 16, 17, 17 and stop.