JPH0531846Y2 - - Google Patents

Description

[Detailed Description of the Invention] Industrial Application Field The present invention relates to a traveling direction control device for a seedling transplanter.
When implanting on a ridge straddled by the left and right wheels as the aircraft travels, the position of the ridge is accurately sensed in front of the direction of travel, and the direction of travel of the aircraft is automatically set parallel to the ridge. This invention relates to a traveling direction control device for a seedling transplanter.

Conventional technology A seedling transplanter that travels across ridges and plants seedlings held in a planter section on ridges.
Conventionally, as shown in Figures 3 and 4, a ridge tracing board A is installed in front of the aircraft body B, and the aircraft runs with this tracing board A sandwiching the ridge C from both sides, causing the ridge C to curve. It is known that when the traveling direction of the aircraft curves, the aircraft is steered by the reaction force of the tracing plate A, which comes into contact with the side surface of the ridge C. However, with a model in which the machine runs with the ridges sandwiched between the tracing boards A, when there are many mulched ridges, such as when cultivating sweet potatoes early, the tracing board A may come into contact with the vinyl mulch film. There is a problem in that the film may be pushed and torn, or may be pulled and wrinkled. In addition, when the monsoon winds are strong during the planting season, to ensure that the planting direction is one direction, it is necessary to go backwards along the ridge where the planting has been completed.
If we adopted a work system in which the plants were then planted in adjacent ridges, the driver would have to get down to the field and correct the direction of movement of the machine each time, since board A, which cannot be used when going backwards, could not be used.

Problems to be Solved by the Present Invention The present invention was devised in view of the above-mentioned actual situation and to eliminate the drawbacks of the conventional method.The purpose of the present invention is to When planting on a ridge that is straddled by the left and right wheels as the aircraft moves, it is possible to accurately sense the position of the ridge and automatically align the direction of movement of the aircraft parallel to the ridge. Even when planting in mulched ridges, the mulch film will not be crushed or wrinkled, and even when the aircraft is moving backwards, the direction of movement of the aircraft can be precisely controlled along the ridges. The purpose of the present invention is to provide a device for controlling the direction of movement of a seedling transplanter.

Means for Solving the Problems In order to solve the above problems, the technical means adopted in the present invention is to move the seedlings held in the planter part along the ridges as the machine moves across the ridges using left and right wheels. In a seedling transplanter that is designed to plant seeds on top, sensors that detect the position of the ridges are installed on both left and right sides of the front and rear of the machine, and the direction of movement of the machine is determined through a steering mechanism linked to the sensing of the sensors. The sensor is controlled so that it is parallel to the ridge, and the sensor on the rear side in the direction of travel is retracted to a non-operating position where it does not detect the position of the ridge, in conjunction with the switching operation of the aircraft between forward and reverse. It is characterized by being constructed as follows.

Effect of the invention Therefore, according to the invention, by running the machine body across the ridge between the left and right wheels, the seedlings held in the planter section can be planted on the ridge. During planting work, if a ridge is bent or the direction of movement of the machine is curved, sensors installed on both sides of the front and rear of the machine immediately detect the position of the curved ridge and coordinate accordingly. The steering device operates and automatically steers the aircraft so that its direction of travel is parallel to the ridge. Since the planting direction is unidirectional, even if you go backwards in the row where you have finished planting, the sensor on the rear side in the direction of travel will move to a non-operating position in conjunction with the switching operation to switch to reverse. Therefore, the sensor on the front side in the direction of movement can accurately detect the position of the ridge, and the direction of movement of the machine can be made parallel to the ridge, allowing for smooth seedling transplantation work.

Embodiment The embodiment of the present invention will be explained in detail based on the attached drawing of the sweet potato seedling transplanting machine. A rotating shaft 6 having a planter 5 mounted radially between the front wheel 2 and the rear wheel 3 is mounted on the frame 1 in the width direction of the body frame 1. The rotating shaft 6 is connected to a transmission mechanism 7 that transmits the power of the engine 4 to the rear wheels 3 via a chain, a pulley, etc. (not shown), and rotates in the same direction as the rear wheels 3. If the machine is run across the ridge a with the left and right front wheels 2, 2 and rear wheels 3, 3, the planter 5, which rotates downward as the machine runs, will move the seedlings held in the planter 5 across the ridge a. It is designed to be planted on top.

Reference numerals 8 and 8 indicate sensing sensors provided at the front of the aircraft body, and the sensing sensors 8 and 8 are located on the aircraft frame 1.
It is attached and fixed to the tip of an arm 10 that is mounted so as to be rotatable in the vertical direction about a fulcrum 9 at the front end. In the normal state where the arm 10 is lowered, the detection sensors 8, 8 detect the left and right front wheels 2, 2.
Contactors 11, 11 protruding like whiskers are located on the inside of the front part of the ridge a and constantly touch both sides of the ridge a to sense the position of the ridge. 12 is a control box connected to the sensing sensors 8, 8; 13 is an actuator attached to the front axle 14; when the ridge is bent or the body is bent while the aircraft is running, the contactor 11, 11 comes into contact with the side surface of the ridge a, and sends a signal to the control box 12, which drives the actuator 13 to steer the wheel 2 so as not to hit the ridge. It's becoming like that.

Reference numerals 15 and 15 indicate detection sensors provided at the rear of the aircraft body, and similar to the detection sensors 8 and 8 provided at the front part of the aircraft body, the arms are attached to the rear end of the aircraft frame 1 and are movable up and down. The contacts 17, 17 contact both sides of the ridge a and send the sensed signal to the control box 12.

The arm 10 attached to the front end of the fuselage frame 1 and the arm 16 attached to the rear end of the fuselage frame 1 are connected via wires 18 and 19 to forward and backward movement levers 21 of the fuselage, respectively, which are provided near the driver's seat 20.
When the lever 21 is operated to the forward position, the arm 16 rotates upward and the sensors 15 at the rear of the fuselage retreat to a position where they do not detect the ridges, and the lever 21 is switched to the reverse position. When operated, the arm 10 rotates upward, and the sensors 8, 8 at the front of the fuselage, which is on the rear side in the direction of travel, are retracted to a position where they do not sense the ridge. 22
is a drilling device that opens planting holes in multi-film,
23 is a sensor roller that detects the height of the ridge.

In the configuration described above, when transplanting seedlings, the driver sitting in the driver's seat 20 holds the seedlings in the planter 5 by driving the machine across the ridge using the left and right wheels of the front wheels 2 and rear wheels 3. By doing so, seedlings can be successively planted on the ridges using the planter 5, which rotates as the machine moves. During forward travel, if the ridge is bent or the aircraft body is bent, the contacts 11, 11 of the sensors 8, 8 provided at the front of the aircraft will be biased and come into contact with the side of the ridge a. This is immediately sensed and a signal is sent to the control box 12, which drives the actuator 13 attached to the front axle 14 and automatically steers the aircraft so that the traveling direction of the aircraft is parallel to the ridge. And detection sensors 8, 8 located inside the front part of the front wheels 2, 2
can accurately sense the bending of the ridges, and since the whisker-like contacts 11, 11 touch the ridges and sense them, even if the ridges are mulched, the mulch film will not be pushed through. It doesn't wrinkle.

In addition, when moving the aircraft backwards, when the forward/reverse lever 21 is switched to the reverse position, the arm 16 attached to the rear end of the aircraft frame 1 rotates downward in conjunction with the switching operation, and the arm 16 attached to the front end rotates downward. Arm 1
0 rotates upward and detects the sensor 15 at the rear of the aircraft.
15 senses the position of the ridge, so there is no need for the driver to get down to the field and correct the direction of movement of the machine even when going backwards, and the machine is controlled so that the direction of movement of the machine is parallel to the ridge. be able to.

Effects of the Invention In short, the present invention is a seedling transplanter that plants seedlings held in the planter section on the ridge as the machine moves across the ridge using left and right wheels. Sensors are provided on both left and right sides of the aircraft to detect the position of the ridge, and the direction of movement of the aircraft is controlled to be parallel to the ridge via a steering mechanism linked to the sensing of the sensor.
The above-mentioned sensor is linked to the forward and reverse switching operation of the aircraft, and the sensor on the rear side of the direction of travel is retracted to a non-operating position where it does not detect the position of the ridge. During the work of planting seedlings on the ridges straddled by the wheels, the sensor on the front of the machine senses the position of the ridges and the machine's direction of travel is parallel to the ridges. Even when planting seedlings on the ground, there is no need to push through the multi-film like in conventional methods, and even if the aircraft's direction of travel is changed to reverse, the sensor installed at the rear of the aircraft works in conjunction with the switching operation. Since the position of the ridge can be detected by a sensor, the machine can automatically move backwards parallel to the ridge without the need for the driver to get down to the field and adjust the direction of movement of the machine, allowing for efficient transplantation of seedlings. It has extremely useful practical effects, such as being able to perform tasks.

[Brief explanation of drawings]

The drawings show an embodiment of the advancing direction control device for a seedling transplanter according to the present invention, in which Fig. 1 is an overall side view, Fig. 2 is a plan view of the same, and Fig. 3 is a side view showing a conventional example. , FIG. 4 is a plan view of the same. In the figure, 2... front wheel, 3... rear wheel, 5... planter, 8... sensing sensor at the front of the fuselage, 15... sensing sensor at the rear of the fuselage.

Claims (1)

[Scope of utility model registration request] In this seedling transplanter, the seedlings held in the planter section are planted on the ridges as the machine moves over the ridges using left and right wheels, and the position of the ridges is sensed on both the left and right sides of the front and rear of the machine. A sensing sensor is provided, and the direction of movement of the aircraft is controlled to be parallel to the ridge through a steering mechanism linked to the sensing of the sensing sensor, and the sensing sensor is used to switch between forward and backward movement of the aircraft. A traveling direction control device for a seedling transplanter, characterized in that the sensor on the rear side in the traveling direction retreats to a non-operating position where it does not detect the position of a ridge.