KR20170110225A - Device for adjusting planting depth automatically for a rice planting machine - Google Patents

Abstract

The present invention proposes a transplanting machine or a rice milling machine which automatically adjusts the depth of the food according to the traveling speed. The automatic depth control apparatus of the present invention comprises: a drive motor capable of forward rotation and reverse rotation; A lever guide (60) movably supported in the front and rear direction on the bottom surface of the lever casing and having a plurality of holding grooves into which the depth adjusting levers are inserted and supported; A control unit (100) for dividing the vehicle speed sensed by the vehicle speed sensor into a plurality of traveling speed steps and driving the driving motor forward or backward according to each traveling speed step; A switching pad 66 that moves in the forward and backward directions like the lever guide; And a plurality of switching elements for generating on and off signals by contact with moving switching pads based on driving of the driving motor and generating at least three combination signals for adjusting the depth of the food at least three stages . The driving motor is driven on the basis of the traveling speed according to the speed sensed by the vehicle speed sensor to linearly move the depth control lever through the lever guide and drive the driving motor based on the combination signal detected by the plurality of switching elements By stopping, the depth of the food is adjusted in multiple stages.

Description

Technical Field [0001] The present invention relates to a device for automatically adjusting a depth of a feeder of a plant,

The present invention relates to an apparatus for automatically adjusting depth of food in a transplanting machine, and more particularly, to a depth adjuster for a depth of a food in a transplanting machine, the depth of which can be adjusted in multiple stages in proportion to the speed of a transplanting operation.

The transplanting machine according to the present invention can be regarded as a generic term for equipment that can be planted at a predetermined depth in a cultivation area after plants having a certain size grown on a tray are separated. Thus, for example, it is possible to use a plant for transplanting a certain crop as in an onion transplanting machine, and also applicable to rice planting rice planting. In the following embodiments, embodiments embodied through a rice-growing machine will be described, and a configuration example applied to a rice-growing machine will be described in the related art.

As can be seen from Figs. 1 and 2, the rice planting machine includes a running vehicle that can run with an engine as a power source for driving, and a feeding device 20 which is installed behind the running vehicle and is a planting device . The feeding device 20 is connected to the running vehicle through a plurality of links (three or four) mechanisms, and a hydraulic cylinder is installed in the link so as to be able to move up and down.

As described above, the food compartment unit 20 provided at the rear of the vehicle body is provided with a food compartment chassis 21 as a basic frame in order to support the parts constituting the connection with the running body and the food compartment. The food compartment chassis 21 includes a food compartment frame 21a provided in the lateral direction in the lower portion thereof, a pair of middlelike tank support frames 21b vertically installed at both ends of the food compartment frame, And a roller supporter 21c provided for the left and right movement of the base plate while connecting upper ends of the frame to each other. In the middle portion of the moth tank supporting frame, a rolling support 21d is installed in the lateral direction to reinforce the strength of the entire food-portion chassis.

A plurality of floaters (22) are provided at the lower portion of the food frame, so that the depth of the food can be adjusted. In the vicinity of the plotter 22, a plurality of separating finger assemblies 26 are disposed to remove a certain amount of impurities from the base plate and plant them in the rice paddle. A stopping device 24 is provided in front of the plotter 22 for performing a grounding operation for picking up the ground before planting the seedling. The stopper 24 is composed of a stationary rotor that rotates using the power of the engine and a plurality of theorem blades that are installed outside the stationary rotor to pick the ground.

Such a floater 22 can grasp the state of the ground by being in contact with the ground, and is used as basic information for controlling the depth of the food. A sensor is used to detect the state of the plotter 22. Specifically, a potentiometer for detecting the inclination of the plotter 22 is installed. The potentiometer (sensing sensor) senses the inclination angle of the plotter in accordance with, for example, an ascending or descending film, and transmits the sensed angle to the control unit (CPU).

Based on the inclination state information of the plotter, the control unit can control the depth of the food by controlling the hydraulic cylinder that moves the food processor 20 up and down. In addition to the height adjustment by the plotter, the depth of the food can be manually set or changed manually by the user. As shown in Fig. 2, a food depth control lever 28 is provided on the rear portion of the food processor 20. As shown in Fig. By operating the depth adjust lever 28, the depth of the food portion can be adjusted by interlocking the plotter.

Specifically, the lower end of the food depth control lever 28 is connected to the floater support pipe 27. Therefore, when the depth-of-cutter depth control lever 28 is operated, the float support pipe 27 is rotated substantially. As the floater support pipe 27 rotates, the connecting link 23 is raised or lowered. Since the plotter 22 is supported by the connection link 23, the plotter 22 is moved up or down according to the operation of the control lever 28. The lever (29) provided adjacent to the food depth control lever (28) is a seedling weight adjustment lever that adjusts the amount of peel off from the base plate.

And the buoyancy of the float increases with the increase of the moving speed of the rice mill during the transplanting work, and the depth of the food is lowered. In order to correct the depth of the food in this state, it has been proposed to calibrate the depth of the food one step deeper. However, this is merely a correction of one step according to the speed. I can not find any suggestions.

It is an object of the present invention to provide a rice mill capable of efficiently performing a transplanting operation by allowing the depth of the food to be adjusted in multiple stages in response to the vehicle speed during the transplanting operation.

It is another object of the present invention to provide a rice mill capable of adjusting the depth of the food portion in multiple stages while using relatively inexpensive parts.

According to an aspect of the present invention, there is provided a method of manufacturing a floor panel, the method comprising the steps of: (a) inserting a floor depth adjusting lever into an operating groove of a lever casing; A connecting link connecting the plotter and the plotter supporting pipe; And a vehicle speed sensor for detecting the speed of the rice planting stage, comprising: a driving motor capable of forward rotation and reverse rotation; A lever guide movably supported in the front and rear direction on the bottom surface of the lever casing and having a plurality of holding grooves into which the depth adjusting lever is inserted and supported; A control unit for dividing the vehicle speed sensed by the vehicle speed sensor into a plurality of traveling speed steps and driving the driving motor in forward or reverse directions according to the traveling speed steps; Linear motion converting means for converting a rotational force of the drive motor into a linear motion of a lever guide; A switching pad which moves in the forward and backward directions like the lever guide; And a plurality of switching elements for generating on and off signals by contact with moving switching pads based on driving of the driving motor and generating at least three combination signals for adjusting the depth of the food at least three stages . Here, the controller drives the driving motor based on the traveling speed according to the speed sensed by the vehicle speed sensor, linearly moves the depth control lever through the lever guide, By stopping the driving of the motor, the depth of the food is adjusted to a multi-stage.

According to another aspect of the present invention, there is provided an ink jet printer comprising: a food depth control lever provided in an operation groove portion of a lever casing, the lower end portion being connected to a floater support pipe to move the floater up and down; A connecting link connecting the plotter and the plotter supporting pipe; And a vehicle speed sensor for detecting the speed of the rice planting stage, wherein the driving motor is capable of forward rotation and reverse rotation by means of a depth automatic regulating device of a rice planting machine, and is supported movably in the longitudinal direction on the bottom surface of the lever casing, A lever guide in which a plurality of holding grooves are formed in a row; A control unit for dividing the vehicle speed sensed by the vehicle speed sensor into a plurality of traveling speed steps and driving the driving motor in forward or reverse directions according to the traveling speed steps; And a linear motion converting device for converting the rotational force of the driving motor into a linear reciprocating motion of the lever guide. In this case, the controller drives the driving motor based on the traveling speed level according to the speed sensed by the vehicle speed sensor, and linearly moves the depth control lever through the lever guide, so that the depth of the food is adjusted in multiple stages.

According to another aspect of the present invention, there is provided an ink jet printer comprising: a depth-of-feed adjusting lever which is provided in an operating groove portion of a lever casing and whose lower end portion is connected to a floater supporting pipe for moving up and down the floater; A connecting link connecting the plotter and the plotter supporting pipe; And a vehicle speed sensor for sensing the speed of the implanter; A drive motor capable of forward rotation and reverse rotation; A lever guide movably supported in the front and rear direction on the bottom surface of the lever casing and having a plurality of holding grooves into which the depth adjusting lever is inserted and supported; A control unit for dividing the vehicle speed sensed by the vehicle speed sensor into a plurality of traveling speed steps and driving the driving motor in forward or reverse directions according to the traveling speed steps; Linear motion converting means for converting a rotational force of the drive motor into a linear motion of a lever guide; And a potentiometer capable of detecting various positions of the lever guide moving based on the driving of the driving motor. Here, the controller drives the driving motor based on the traveling speed level according to the speed sensed by the vehicle speed sensor, linearly moves the depth control lever through the lever guide, and drives the driving motor based on the plurality of signals sensed by the potentiometer. The depth of the food portion is adjusted in multiple stages.

According to the present invention as described above, it is possible to adjust the depth of the food to be at least three or more stages in conjunction with the vehicle speed. Therefore, by applying the present invention, it is expected that the automatic adjustment of the depth of the food portion and the efficiency of the work based thereon can be expected.

1 is a perspective view illustrating an example of a food unit of a general rice plant;
FIG. 2 is a side view of a food device of a general rice-growing season; FIG.
3 is an exemplary perspective view of an apparatus for adjusting depth of food according to the present invention;
FIG. 4 is a diagram illustrating an example of a switch combination according to an embodiment of the present invention. FIG. 4 (a) shows a low speed state, FIG.
5 is a schematic block diagram for signal processing of the present invention;
6 is an exemplary perspective view showing the configuration of another embodiment of the present invention.

The present invention will be described in detail with reference to FIG. 3, which shows the configuration of the essential portion of the automatic depth control apparatus according to the present invention. In the following description, description will be given while referring to the constituent elements of Fig. 2, if necessary.

As shown in the figure, the food depth control lever is provided inside the operation groove portion 72 formed on the upper surface of the lever casing 70. 2, the depth-of-food adjusting lever 28 is provided at a position corresponding to the operating groove of the lever casing 70 fixed to the cooking chamber, It will be appreciated that it is assembled in a state of penetrating through the portion 72.

A plurality of retaining grooves 62 formed at one side of the groove are formed in the upper surface of the lever casing 70 so as to have a size similar to that of the operating groove portion 72, A lever guide 60 is provided. The lever guide 60 is supported so as to be relatively movable in the longitudinal direction of the operation groove portion 72 (the forward and backward direction of the rearing station), and may be supported by the lever casing 70 and directly or indirectly As shown in Fig. The holding groove 62 of the lever guide 60 is a portion where the operating lever is held and fixed, and the operating lever itself is elastically supported on the holding groove 62 side by an elastic member such as a spring .

The lever guide (60) is extended or connected to the bottom surface of the opposite side of the operating groove portion (72). The extended portion 64 supported on the bottom surface of the opposite side of the operating groove portion 72 is connected to the lever guide 60 or is extended from the lever guide 60. [ It is a matter of course that the extended portion 64 is also movably supported in the longitudinal direction (same as the forward and backward direction) of the operation groove portion 72 like the lever guide 60.

The extended portion 64 is connected to the switching pad 66 through the connecting portion 68 so that the lever guide 60 and the extending portion 64 and the switching pad 66 are moved in the same manner. The lever guide 60 and its extended portion 64, the connecting portion 68 and the switching pad 66 can be said to linearly reciprocate in the direction of arrow A in Fig. 3

According to the present invention, the above-described lever guide 60 and its extending portion 64, the connecting portion 68, and the switching pad 66 can be linearly reciprocated in the direction of the arrow A, And a linear reciprocating motion converting means for converting the forward and reverse rotational forces of the driving motor 50 into a linear reciprocating motion of the linear motion mechanism. That is, the linear reciprocating motion converting means converts the normal rotation and the reverse rotation of the drive motor 50 into a linear reciprocating motion of the extending portion 64 of the lever guide 60 or the connecting portion 68 connected thereto.

This linear reciprocating motion converting means may be implemented in a substantially different configuration, for example, using the principle of a ball screw between the drive motor 50 and the extension portion 64 or the lever guide 60 It will be possible. For example, when a nut-shaped member is coupled to a bar-shaped rotary shaft rotated by the driving motor 50 and formed on the outer surface thereof and a guide is provided so as not to rotate, the nut- The principle of reciprocating motion is also available.

3, male threads are formed on the outer surface of the rotating shaft B that rotates based on the rotational force of the drive motor 50, and female threads engaged with these threads are engaged with lever guides (60) or one side of the extension member (64). The extension member 64 and the lever guide 60 can be linearly moved in the direction of the arrow A with respect to the lever casing 70. Therefore, The lever guide 60 will be able to reciprocate linearly in the direction of the arrow A in accordance with the rotation. It goes without saying that various other modifications are possible to the conversion mechanism for converting the rotational motion of the output shaft of the motor 50 into the linear reciprocating motion of the lever guide 60. [

According to the above configuration, in a state in which any one of the holding grooves 62 formed continuously in a saw-tooth shape enters the food depth adjusting lever and is elastically supported, the rotational force of the driving motor 50 is transmitted to the linear reciprocating motion It can be understood that the conversion means can convert the linear reciprocating motion of the lever guide 60 (in the direction of the arrow A). That is, the food depth control lever in the state of being inserted into any one of the holding grooves 62 is linearly moved in the same direction of the arrow A corresponding to the linear reciprocating motion of the lever guide 60.

As described above, the lower end of the depth-of-field adjusting lever is connected to the floater support pipe 27 as shown in Fig. Therefore, when the food depth control lever is linearly reciprocated within the operation groove portion 72 of the lever casing 70 by the above-described structure, the floater support pipe 27 (see FIG. 2) connected to the lower end of the control lever Is rotated at a substantially constant angle.

The rotational motion of the floater support pipe 27 causes the connecting link 23 to rotate about its center, thereby ultimately raising or lowering the floater 22. [ For reference, the movement of the food depth control lever is strictly referred to as a circular movement around the floater support pipe 27, but it is interlocked with the movement of the lever guide 60 and is referred to as a linear movement. That is, it can be seen that the linear movement of the lever guide 60 causes the linear movement (centered on the plotter support pipe) to occur.

It is to be noted that the plotter 22 ultimately ascends and descends due to the linear reciprocating motion of the lever guide 60 in a state in which the food depth control lever is engaged with any one of the serration- . The drive motor 50 in the present invention is a motor capable of substantially forward and reverse rotation. The switching pad 66 interlocked with the lever guide 60 described above is provided with a plurality of limit switches Sa and Sb to substantially stop the rotation of the drive motor 50 It can be said to be linked.

Next, a connection relationship between a plurality of limit switches Sa and Sb and a switching pad 66 of the present invention will be described with reference to FIG. In the present invention, a pair of limit switches Sa and Sb is used in order to adjust the depth of food to three levels according to the traveling speed of a rice miller. However, it is natural that three or more combination signals can be produced according to a combination of a plurality of switches, and the corresponding depth of the food portion can be adjusted in multiple stages.

As described above, the switching pad 66 performs the linear reciprocating motion in accordance with the forward and reverse rotations of the driving motor 50. [ The linear reciprocating motion of the switching pad 66 generates the on / off signals of the pair of limit switches Sa and Sb provided at the lower portion thereof so that the control unit 100 ).

More specifically, in the state shown in Fig. 4A, the first limit switch Sa is in an ON state and the second limit switch Sb is in an OFF state. That is, the switching pad 66 is in the first position and is in contact with only the first limit switch Sa to turn it on. This state is the state where the rice paddy is running at the slowest speed, and the rice paddy is planted with the most general depth of the food. In the following description, the state shown in Fig. 4 (a) will be referred to as a first running speed state, which is the state in which the drilling operation is proceeded with the slowest running speed and the shallowest depth of cut have. The first running speed state may be set to a speed section of, for example, 0.8 m / sec or less.

It is also desirable to control the depth of the vegetation deeply when the speed of the transplanting machine increases as the transplanting operation proceeds in this state. In order to automatically adjust the depth of the food portion, the depth-of-food adjusting lever 28 must be operated by the lever guide 60. [ Here, as shown in FIG. 5, the driving speed of the herbicide is increased because the control unit 100 can detect the speed of the herbicide by the signal from the vehicle speed sensor 110 that has been conventionally installed in the pasture stage.

The control unit 100 drives the driving motor 50 so that the depth of the food depth control lever 28 is controlled by the control unit 100. When the depth of the food depth is controlled by the control unit 100, And controls the depth of the food to be deeper. This control is substantially effected so that the food depth control lever 28 is operated by the lever guide 60 to make a linear movement so that the float support pipe 27 rotates in the clockwise direction with reference to Figure 2, Means that the plotter 22 is raised while the link 23 is rotated in the counterclockwise direction.

When the driving motor 50 starts to rotate in one direction in accordance with the control of the controller 100, the lever guide 60 is linearly moved backward. Accordingly, the depth-of- 27 so as to move up the plotter 22. The switching pad 66 is moved rearward (in the direction with reference to Figs. 1 to 3, which is the leftward direction in Fig. 4) at the same time as the lever lever guide 60 is moved.

In other words, the state of FIG. 4 moves from the state of (a) to the state of (b). When the first switch Sa and the second switch Sb are both turned on, the drive motor 50 is continuously driven and the switching pad 66 continues to move, . Then, the controller 100 recognizes that the state is such that the driving of the driving motor 50 is stopped. In this case, the subcropping operation will proceed substantially deeper than the depth of the food depth. At this time, the speed of the herbicide becomes the second traveling speed state faster than the first traveling speed state. Here, the second running speed state may be set to a speed range of, for example, 0.8 to 1.2 / sec.

In this state, when the detection value of the speed sensor 110 of the rearing machine is further accelerated, the controller 100 operates the drive motor 50 again for the speed signal. This operation of the control unit 100 is intended to further deepen the depth of the food. Therefore, the rotational force of the drive motor 50 is converted into a linear motion by the above-described linear motion converting means to linearly move the lever guide 60 to the rear, whereby the floater support pipe 27 rotates counterclockwise And as the connecting link 23 also rotates together, the floater 22 performs an operation of ascending.

Here, it is natural that the movement of the lever guide 60 substantially cooperates with the switching pad 66 so as to be linearly moved as well. When the switching pad 66 starts to move and a certain time has elapsed, the first limit switch Sa is separated from the first limit switch Sa as shown in (c), so that the first limit switch Sa transmits an off signal to the controller 100 . In this case, the controller 100 immediately stops the drive of the drive motor 50. This means that the depth of the food is deep enough. Such a speed condition may be set to a speed range of, for example, 1.2 to 1.8 m / sec.

As described above, in the embodiment, the switching pad 66 is brought into contact with the two limit switches, so that the depth of the food can be controlled in three stages. In the present invention, a limit switch controlled by the operation (linear movement) of the switching pad 66 is described as an example, but it is obvious that the present invention can not be limited by the limit switch.

That is, it is a matter of course that any switch capable of being applied in the present invention can be used as long as it is in contact with a linearly moving switching pad in conjunction with a lever guide to generate an ON / OFF signal. In addition, although a pair of switching elements is used in the embodiment described above, it is natural that the step of controlling the depth of the food can be further subdivided by using three switching elements.

In the above description, the process of changing from (a) to (c) on the basis of FIG. 4, that is, the process of changing the speed to be higher at a lower speed is described as an example. However, it can be understood that the depth of the food can be adjusted sufficiently even when the vehicle speed is changed at a high speed.

Hereinafter, another embodiment of the present invention will be described. It can be seen that the rotational force of the driving motor 50 is stopped by using the switching pad 66 and the plurality of switches Sa and Sb in the above embodiment. When the sensed speed of the vehicle speed sensor exceeds a predetermined speed, the driving motor starts to rotate in one direction, but is driven based on a signal (on / off) due to contact or separation between the switching pad 66 and the switches Sa and Sb And the motor is stopped.

The above embodiment can be said to be applied to a case where a motor capable of only forward and reverse rotation is used. In the case of using a motor capable of controlling the forward and reverse rotations and the number of revolutions, the positions of the lever guide 60 and the depth control lever 28 can be substantially grasped by controlling the rotational speed of the motor, It is expected to be possible.

Hereinafter, another embodiment of the present invention will be described with reference to FIG. In the present embodiment, one potentiometer 80 is used in place of the plurality of switches Sa and Sb in the above embodiment, and in the drawing, reference numerals are given only to portions directly related to this embodiment . As shown, the posistor meter 80 is connected to the lever guide 60 substantially through the switching pad 66. Therefore, the potentiometer 80 can substantially grasp the current position of the lever guide 60 accurately.

In the present embodiment, the controller 100 rotates the driving motor 50 for adjusting the depth of the food based on the speed value sensed by the vehicle speed sensor 110. By the forward rotation or the reverse rotation of the drive motor 50, the lever guide 60 linearly moves. As described above, the linear motion of the lever guide 60 substantially causes the depth-of-food-depth adjusting lever 28 to move linearly, thereby controlling the depth of the food.

And the linear motion of this lever guide 60 can be sensed by the potentiometer 80 either directly or indirectly (via a switching pad or other connection part). The switching pad 66 is connected to the potentiometer 80 so that the movement of the lever guide 60 is transmitted to the potentiometer 80 via the switching pad 66. In this embodiment, Lt; / RTI >

In this embodiment, it is understood that the position of the lever guide 60 can be detected through the potentiometer 80 when the lever guide 60 is linearly moved. The position of the potentiometer 80 can detect the position of the lever guide 60 in multiple stages corresponding to the depth of the food set at the multi-stage in the control unit 100 based on the vehicle speed.

For example, when the detection value of the speed sensor 110 of a fasting period is fast, the control unit 100 operates the driving motor 50 with respect to the speed signal. As described above, this operation of the control unit 100 is intended to further deepen the depth of the food. The rotational force of the drive motor 50 is converted into a linear motion by the linear motion converting means described above to linearly move the lever guide 60 to the rear side so that the floater support pipe 27 rotates counterclockwise And as the connecting link 23 also rotates together, the floater 22 performs an operation of ascending.

The linear movement of the lever guide 60 is sensed by the potentiometer 80. When it is determined that the lever guide 60 (or the switching pad) has moved by a sufficient distance corresponding to the current speed, The operation of the drive motor 50 is stopped. When the speed value sensed by the vehicle speed sensor changes during the operation in this state, the control unit 100 operates the driving motor 50 based on the speed value sensed by the vehicle speed sensor.

It will be apparent to those skilled in the art that various modifications and variations can be made in the present invention without departing from the spirit or scope of the inventive concept as defined by the appended claims. It is also obvious that it is.

20 ..... food processor
22 float
23 ..... connection link
27 ..... Float support pipe
28 ..... depth control lever
50 ..... drive motor
60 ..... Lever guides
62 ..... maintenance home
64 ..... extension part
66 ..... switching pads
68 ..... connection
70 ..... Lever casing
72 ..... Operation groove part
100 ..... controller
110 ..... vehicle speed sensor
Sa, Sb ..... Limit switch

Claims (3)

And a bottom portion depth adjustment lever 28 connected to the floater support pipe for moving up and down the plotter; A connecting link 23 connecting the plotter and the plotter supporting pipe; And a vehicle speed sensor for sensing the speed of the transplanting machine:
A drive motor capable of forward rotation and reverse rotation;
A lever guide (60) movably supported in the front and rear direction on the bottom surface of the lever casing and having a plurality of holding grooves into which the depth adjusting levers are inserted and supported;
A control unit (100) for dividing the vehicle speed sensed by the vehicle speed sensor into a plurality of traveling speed steps and driving the driving motor forward or backward according to each traveling speed step;
Linear motion converting means for converting a rotational force of the drive motor into a linear motion of a lever guide;
A switching pad 66 that moves in the forward and backward directions like the lever guide; And
A plurality of switching elements for generating on and off signals by contact with moving switching pads based on driving of the driving motor and generating at least three combination signals for adjusting the depth of the food at least three stages;
Wherein the controller drives the driving motor based on a traveling speed step according to a speed sensed by the vehicle speed sensor, linearly moves the depth control lever through a lever guide, and, based on the combination signal sensed by the plurality of switching elements, Automatic adjustment of the depth of food part of the grabber machine where the depth of the food is controlled by stopping the driving of the motor.
And a bottom portion depth adjustment lever 28 connected to the floater support pipe for moving up and down the plotter; A connecting link 23 connecting the plotter and the plotter supporting pipe; And a vehicle speed sensor for sensing the speed of the transplanting machine:
A drive motor capable of forward rotation and reverse rotation;
A lever guide (60) movably supported in the front and rear direction on the bottom surface of the lever casing and having a plurality of holding grooves into which the depth adjusting levers are inserted and supported;
A control unit (100) for dividing the vehicle speed sensed by the vehicle speed sensor into a plurality of traveling speed steps and driving the driving motor forward or backward according to each traveling speed step; And
And a linear motion converting device for converting the rotational force of the drive motor into a linear reciprocating motion of the lever guide;
Wherein the controller drives the driving motor based on the speed of the vehicle sensed by the vehicle speed sensor to linearly move the depth control lever through the lever guide so that the depth of the food is adjusted in multiple stages, .
And a bottom portion depth adjustment lever 28 connected to the floater support pipe for moving up and down the plotter; A connecting link 23 connecting the plotter and the plotter supporting pipe; And a vehicle speed sensor for sensing the speed of the transplanting machine:
A drive motor capable of forward rotation and reverse rotation;
A lever guide (60) movably supported in the front and rear direction on the bottom surface of the lever casing and having a plurality of holding grooves into which the depth adjusting levers are inserted and supported;
A control unit (100) for dividing the vehicle speed sensed by the vehicle speed sensor into a plurality of traveling speed steps and driving the driving motor forward or backward according to each traveling speed step;
Linear motion converting means for converting a rotational force of the drive motor into a linear motion of a lever guide; And
And a potentiometer capable of sensing various positions of the lever guide moving based on the driving of the driving motor;
Wherein the control unit drives the driving motor based on the driving speed step according to the speed sensed by the vehicle speed sensor, linearly moves the depth control lever through the lever guide, and drives the driving motor based on the plurality of signals sensed by the potentiometer. To automatically adjust the depth of the food part in the transplanting machine.

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