JPH0520112Y2 - - Google Patents

Description

[Detailed description of the invention] Industrial application field This invention allows the entire planter section installed in the machine to be moved up and down relative to the machine, even if the planting surface on which the seedlings are transplanted has a height. This invention relates to a planting depth control device for a transplanter, which maintains a constant depth and prevents damage to the seedlings or disturbance of the planting posture when transplanting the seedlings.

Conventional technology Generally, a transplanter used for transplanting sweet potato seedlings, etc., holds the seedlings in a transplanting body provided in the planter section, and as the transplanting body rotates, the seedlings are planted into the soil on a ridge. It is known that this was done.

Problems to be Solved by the Present Invention By the way, with such conventional transplanters, the planter section is adjusted before starting work so that the transplanted seedlings are at the desired planting depth, and then the transplanter is moved to the adjusted position. Since the transplanting work is carried out while the plant is fixed to the surface, the planting depth will change if the height of the ridge surface is different. Therefore, a system has been proposed in which the planter section is moved up and down during work in response to changes in the height of the ridge surface, etc. However, such a system that automatically moves the planter section up and down during work does not allow the seedlings to grow. Even during planting when the transplanting body holding the container is immersed in the soil, the planter part moves up and down, and excessive force is applied to the seedlings held in the planting body, damaging the seedlings or disrupting the planting posture. There are problems such as delayed seedling establishment and poor yield.

The present invention was devised in order to solve these problems in view of the above-mentioned actual situation, and is designed to increase the planting depth by moving the entire planter part up and down with respect to the machine body in response to the height of the planting surface during work. However, when the plant holding the seedlings is immersed in the soil, the planter part may damage the seedlings, or the planting posture may be disturbed, resulting in delayed rooting and reduced yields. It is an object of the present invention to provide a planting depth control device for a transplanter that can prevent such problems from occurring.

Means for Solving the Problems In order to achieve the above objective, the technical means taken by the present invention is to provide a traveling aircraft having front and rear wheels that travel across ridges, and to rotate in conjunction with the travel of the aircraft. The transplanting machine is provided with a planter section equipped with a transplanting body, and the transplanting body immerses into the soil and plants the seedlings held in the transplanting body on the ridge as the machine moves. A detection mechanism for detecting the planting depth is integrally provided at the front of the planter section, and a parallel vertical movement mechanism is provided at the rear of the planter section to move the entire planter section up and down in parallel in conjunction with the detection by the detection mechanism. The planter is characterized in that the planting depth of the seedlings is controlled by using the parallel vertical movement mechanism, and the vertical movement of the planter part by the parallel vertical movement mechanism is stopped at the time of planting when the transplanting body is immersed in the soil. be.

Effects of the invention The effects of the invention configured as described above will be explained. If you run the traveling aircraft across the ridge now,
The planting body of the planter part rotates in conjunction with the travel of the machine, and the planting body holding the seedlings sequentially immerses into the soil of the ridge and plants the seedlings as the machine moves. During the planting process, if the height of the ridge surface changes, the distance between the planter section and the ridge surface will change and the planting depth will change, but a detection mechanism installed at the front of the planter section detects this. Accurate detection is performed, and in conjunction with the detection results, the entire planter section is moved up and down using a parallel up-and-down movement mechanism to control the planting depth to a predetermined depth.

When the planting body holding the seedlings is immersed in the soil of the ridge during planting, the vertical movement of the planter part by the parallel vertical movement mechanism is stopped, so the planting body holding the seedlings is not forced to move up and down in the soil. It will not move, damage the seedlings, or disrupt the planting posture.

Embodiment The structure of the present invention will be described with reference to an embodiment shown in the drawings. 1 is a traveling aircraft equipped with left and right front wheels 2, 2 and rear wheels 3, 3, and has an engine 4 mounted on the rear. A planter section 5 for planting sweet potato seedlings and the like on a ridge straddled by left and right wheels is supported on the traveling body 1 so as to be vertically movable by a parallel vertical movement mechanism 6. That is, a bracket 8 is fixed to the body frame 9 below the driver's seat 7 provided on the rear side of the traveling body 1, and the planter portion 5 is attached to the tips of the vertical links 10, 11 pivotally connected to the bracket 8. The planter section 5 is configured to move up and down in parallel as the actuator 12 expands and contracts.

The planter section 5 is provided with a rotary shaft 18 that is rotatably driven from the drive shaft 14 of the transmission 13 via sprockets 15, 16, a chain 17, etc., and a mounting shaft 18 that protrudes radially from the rotary shaft 18. A link mechanism 20 is provided at the tips of the arms 19, 19.
The transplant body 21 is attached via. The outer surface of the transplanting body 21 is formed into a curved shape and serves as a seedling supply surface 21a for holding sweet potato seedlings, etc.
As the machine moves, the planting body 21 rotates, and the seedling supply surface 21a sinks into the soil of the ridge b to plant the seedlings a.

22 is a detection mechanism for detecting the planting depth,
Arm 2 protruding forward from planter section 5
At the tip of 3, a sensor roller 22 is placed in contact with the ridge b surface.
A rotary arm 24 that pivots on a is pivoted so as to be vertically movable. An angle detection sensor 25 is attached to the rotating portion of the rotating arm 24,
When the height of the ridge b changes and the sensor roller 22a rises or falls from the reference position by more than the allowable error, the angle detection sensor 25 detects this and issues a signal, which causes the roller to rotate forward or reverse. motor 2
6, the actuator 12 expands and contracts, and the planter section 5 is moved up and down in parallel until the angle detection sensor 25 no longer emits a signal, so that the distance between the planter section 5 and the ridge b is always constant within the allowable error range. It's starting to be preserved.

27 is a limit switch that stops the vertical movement of the planter section 5 by the vertical movement mechanism 6; 28 is a limit switch that releases the stoppage of the vertical movement caused by the operation of the limit switch 27; as shown in FIG. A pin 2 is built into the control circuit and protrudes from the mounting arm 19 just before the seedling supply surface 21a of the transplanting body 21 enters the planting surface.
9 comes into contact with the limit switch 27, and the seedling supply surface 2
Immediately after the seedling supply surface 21a escapes from the planting surface, the pin 29 contacts the limit switch 28, and when the seedling supply surface 21a is immersed in the soil, that is, in the range of θ in FIG. 1, the angle sensor 25 emits a signal. However, the planter section 5 is designed not to move up and down.

30 is a multi cutter that forms planting holes C' in vinyl mulch C, 31 is a pressure roller that suppresses the planting surface, and 32 is a handle that turns the machine on the headland. Further, 33 is a relay switch that is activated when it is detected that the rotating arm 24 has rotated upward beyond the permissible range, and 34 is a relay switch that is activated when it is detected that the rotating arm 24 has been rotated downward beyond the permissible range. be.

In the above configuration, when transplanting sweet potato seedlings, etc., first adjust the distance between the planter section 5 and the ridge b surface, and then move the sensor roller 22a so that the transplanted seedlings have the desired planting depth. Set the reference position. Then, while driving the aircraft while straddling the ridge B, the driver sitting in the driver's seat 7
When the seedlings a are supplied to the seedlings a, the transporting body 21 rotates as the machine moves, and the seedlings a held on the seedling supply surface 21a are
can be planted on the ridge. During the transplanting work, if the height of the ridge b changes with respect to the planter part 5 by more than the allowable error, the rotating arm 2
The angle detection sensor 25 detects the rotation of the planter 4 and issues a signal, and the motor 26 rotates to extend and retract the actuator 12. Since the aircraft is moved up and down parallel to the stable supported aircraft,
The distance between the planter part 5 and the ridge b can be maintained at the interval adjusted before starting the work, thereby making it easier to carry out transplanting work with a constant planting depth by ensuring that the machine runs on the bottom of the ridge groove. and can be done in an orderly manner. Moreover, since the sensor roller 22a is located in front of the planter section 5, it comes into contact with the ridge B surface before it is disturbed by the planting body 21, and the height of the ridge B surface can be accurately detected. This can significantly improve planting accuracy. And seedling supply surface 21a
At the time of planting when the plant is immersed in the soil on the planting surface, the limit switches 27 and 28 built into the control circuit are activated.
Because the planter part 5 does not move up and down due to the interaction of Never.

In short, the planting depth control device of the present invention is
A traveling body having front and rear wheels that travels across a ridge is provided with a planter section equipped with a planting body that rotates in conjunction with the traveling of the machine, and the seedlings held in the planting body are transferred to the traveling body as the machine moves. Accordingly, in a transplanter in which the transplanted body is immersed in the soil and planted on a ridge, a detection mechanism for detecting the planting depth is integrally provided at the front part of the planter part, and a detection mechanism is installed at the rear part of the planter part. The device is equipped with a parallel up-and-down movement mechanism that moves the entire planter up and down in parallel in conjunction with the detection by the detection mechanism to control the planting depth of seedlings. Since the structure is configured so that the plant is stopped during planting when it is immersed in the soil, the distance between the planter part and the ridge surface is adjusted so that the seedlings planted on the ridge by the rotating transplanter can reach the desired planting depth. If the height of the ridge is adjusted before work, even if the height of the ridge changes during work, the detection mechanism installed at the front of the planter will accurately detect the height of the ridge, and the detection result will be The parallel vertical movement mechanism installed at the rear of the planter section in conjunction with the above moves the entire planter section up and down in parallel, so the distance between the planter section and the ridge is maintained at the interval adjusted before work, and the planting depth can be adjusted. The porting work can be carried out easily and orderly with a constant value. Although the planter part moves up and down with respect to the machine, the planter part stops moving up and down while the planting body is immersed in the soil of the ridge and planting seedlings, so there is no risk of damaging the seedlings. This has very useful practical effects, such as the ability to always carry out accurate and smooth transplanting work without causing delays in rooting due to confusion in the planting posture.

[Brief explanation of the drawing]

The drawings show an embodiment of the planting depth control device for a transplanter according to the present invention, in which FIG. 1 is a side view of the planter section, FIG. 2 is an overall side view of the transplanter, and FIG. 3 is a side view of the transplanter. is a control circuit diagram, and FIG. 4 is a timing chart of the control circuit. In the figure, 1... Traveling body, 5... Planter part, 6
. . . vertical movement mechanism, 21 . . . implantation body, 22 . . . detection mechanism.

Claims (1)

[Scope of utility model registration request] A traveling body having front and rear wheels that travels across a ridge is provided with a planter section equipped with a planting body that rotates in conjunction with the traveling of the machine, and the seedlings held in the planting body are transferred to the traveling body as the machine moves. Accordingly, in a transplanter in which the transplanted body is immersed in the soil and planted on a ridge, a detection mechanism for detecting the planting depth is integrally provided at the front part of the planter part, and a detection mechanism is installed at the rear part of the planter part. The device is equipped with a parallel up-and-down movement mechanism that moves the entire planter up and down in parallel in conjunction with the detection by the detection mechanism to control the planting depth of seedlings. A planting depth control device for a transplanter, characterized in that the device is configured to stop when planting when the plant is immersed in the soil.