JPS6332584Y2 - - Google Patents

Description

[Detailed Description of the Invention] The present invention relates to a seedling planting device of a rice transplanter that is equipped with, for example, a planting section having a seedling stand and a planting claw, and performs rice planting work continuously. Conventionally, as shown in Japanese Utility Model Application Publication No. 54-73211, a lower seedling pine detection member is used to detect and indicate the limit that requires replenishment of seedling pine, and a system that predicts the need for replenishment before the replenishment limit is reached. The upper seedling pine detection member is installed to indicate when the number of seedling pine is consumed and reduced during rice transplanting, and to indicate that the time to replenish the seedling pine is near. A technology has been developed to indicate when replenishment is required and to encourage the replenishment of seedlings.

However, in the cited example above, when a vertical feeding member is provided to move the seedling pine in the direction of the seedling take-out plate at the lower end of the slope of the seedling table, the seedling pine naturally moves at the lower end of the slope than the end of the vertical feeding member. Therefore, in order to properly detect the seedling replenishment timing, it is necessary to provide the seedling pine detection member at least at the upper end of the slope than the end of the vertical feeding member.

In addition, when there are many seedlings left on the seedling stand, mechanical vibrations of the reciprocating seedling stand cause the weight of the seedling pine on the sloped upper surface of the seedling stand to act on the seedling pine as a sliding force, and also cause the lower end of the seedling pine to slide down. Since it is in sliding contact with the seedling take-out board, when the sliding force of the seedling mat becomes greater than the resistance from the seedling platform,
Due to the sliding force, the area near the bottom of the slope of the seedling pine tends to float above the top surface of the seedling stand, while the seam of the seedling pine that replenishes the consumed seedling pine moves near the bottom of the slope of the seedling pine. However, there was a problem in that the joint portion of the seedling pine tended to float due to the sliding force caused by the weight of the seedling pine.

However, since the lower end of the slope of the seedling pine, which tends to float, is located between the seedling take-out plate and the vertical feed member, floating of the lower end of the slope of the seedling pine, which tends to occur when there are a large number of remaining seedlings on the seedling stand, is prevented. , the conventional seedling pine detection member installed on the sloped upper end side of the feed end of the vertical feeding member cannot detect it, and the seedling removal plate does not restore the floating seedling pine portion and the joint portion of the supplied seedling pine to the normal position. When the seedlings reach this point, the proper amount of seedlings cannot be taken out in the proper posture by the planting claws, resulting in problems such as missing plants and poor planting.

However, in the present invention, a seedling platform that is reciprocated in the left-right direction is tilted and supported in the front-back direction, and a seedling take-out plate is provided at the lower end of the slope of the seedling platform, and a seedling pine on the top surface of the seedling platform is removed from the seedling table. In a device in which a vertical feeding member that is moved in the direction of the plate is disposed on a seedling platform, a seedling pine detection member is provided between the seedling take-out plate and the vertical feeding member to detect a seedling pine supported on the top surface of the seedling platform. The present invention is characterized in that the floating movement of the seedling pine between the seedling take-out plate and the vertical feeding member can be detected by the seedling pine detecting member.

Therefore, even if a seedling pine floats between the seedling take-out plate and the vertical feeding member, this floating movement is detected by the seedling pine detection member, so that an alarm based on the output of the seedling pine detection member is issued to prevent the seedling pine from floating. It is possible to correct defects in the seedling pine before the seedling pine reaches the seedling take-out board, and prevent defects such as missing plants and poor planting, allowing for safer handling and improved planting functionality compared to conventional methods. It is possible to easily improve this.

Embodiments of the present invention will be described below in detail based on the drawings. Figure 1 is a schematic side view of a riding rice transplanter, Figure 2 is a plan view of the same, and 1 in the figure is a passenger rice transplanter consisting of a running vehicle dedicated to rice planting. 2 and 3 are the front and rear car bodies that make up the fuselage, 4 and 5 are connection frames that connect the front and rear car bodies 2 and 3 so that they can be bent only in the horizontal direction via the rotation fulcrum shaft 6, and 7 and 8 are the front and rear car bodies. Front and rear running wheels are attached to the left and right sides of the vehicle bodies 2 and 3 via swing cases 9 and 10; 11 is a column whose base end is fixed to the front vehicle body 2;
2 is a preliminary seedling stand supported by the support 11; 13;
14 is a steering handle provided above the front portion of the front vehicle body 2; and 15 is an engine mounted on the rear vehicle body 3.

In addition, 16 in the figure is a planting part for six-row planting that is installed in the front part of the front vehicle body 2 via a three-point linkage mechanism 17 so as to be able to be raised and lowered, and 18 is a planting part for seedlings with low front and rear height that can be moved back and forth from side to side. A mounting stand 19 is a planting claw for taking out one seedling from the seedling mounting stand 18 and planting it; 20 is a transmission case for mounting the seedling mounting stand 18 and the planting claw 19;
1 is a float supporting the transmission case 20, 22
2 is a front bumper attached to the transmission case 20;
3 is a fixed frame that supports each transmission case 20...
The seedling platform 18 and the planting claws 19 are appropriately driven via the PTO transmission shaft 24, and the seedlings are continuously planted.

As shown in FIGS. 3 to 6, the seedling stand 18
A seedling take-out plate 25 is attached to the lower end of the slope, and guide rails 26 and 27 are attached to the lower surface of the lower end and upper end of the seedling stand 18.
6, 27 so that the seedling stand 1 can be slid back and forth to the left and right.
A star foil 29 is attached to the seedling table 18, which is a vertically feeding member that supports the seedlings 8 and intermittently lowers the seedling mat 28 on the upper surface at the end of the horizontal movement of the seedling table 18.
The lower end portion is supported via an intermittent rotating shaft 30. Seedling pine detection switches 31, which are a plurality of seedling pine sensors, are arranged in the direction of movement of the seedling pine 28 on the seedling platform 18 on the inclined upper end side of the star foil 29 attachment position.
32, 33, 34, and 35, and a seedling pine, which is a seedling pine detection member, is provided at the lower end of the seedling platform 18 near the movement trajectory of the planting claw 19 between the seedling take-out plate 25 and the star foil 29. Final detection switch 3
6 is provided, and an electrode terminal plate 37 is vertically pasted and fixed on the upper surface of the seedling stand 18 in the substantially center, and one switch piece 31a, 32a, 33a, 34a, 35
a, 36a are integrally formed on the terminal plate 37, and each switch piece 31a to 36a is crimped to the other switch piece 31a to 36a through the opening 38 of the seedling stand 18 when the seedling pine 28 comes into contact with the terminal plate 37. switch piece 31
b, 32b, 33b, 34b, 35b, and 36b are attached and fixed to the back surface of the seedling stand 18. The distance _L1 between the seedling take-out plate 25 and the uppermost switch 31 is formed to be approximately equal to the unused vertical length of the seedling mats 28, and the amount of seedling mats 28 necessary for seedling succession work is set.
The distance L ₂ between the seedling take-out plate 25 and the lowest seedling pine detection switch 35 is formed so as to leave .

As shown in FIGS. 1, 2, and 7, the front vehicle body 2
A seedling remaining amount display section 39 is attached to the front upper part of the display section 39, and six seedling remaining amount display panels 40, the same number as the number of seedling stands 18 for six rows, are provided on the display section 39, and the vertical direction of the seedling stands 18 is The ratios of the horizontal dimensions A and B and the vertical and horizontal dimensions a and b of the display panel 40 are made approximately the same, and the seedling stand 18 and the display panel 40 are formed to have approximately similar shapes.

As shown in FIG. 8, the seedling pine detection switch 31
35 and a seedling pine final detection switch 36 are incorporated into each seedling platform 18, respectively, in order to output a seedling amount detection signal approximately proportional to the remaining amount of seedlings on the seedling platform 18. Each switch 31~
35 are connected in parallel, and the switch 3 of the seedling mat 28 is connected.
5 to 35 Resistors 42, 43, 4 for outputting seedling amount detection signals of different voltages depending on the operation.
4, 45, and 46 are respectively connected to each switch 31 to 35, and each switch 31 to 35 is used as a control signal for the output level set by each resistor 42 to 46.
The seedling amount detection signal is sent to the seedling final detection switch 36.
Form to output via. In addition, each switch 31 to 35 outputs an output via the switch 36.
A seedling amount detection circuit 47 detects the amount of seedlings on the seedling stand 18 based on the output level of the control signal P which is a detection signal of
maximum and minimum detection level setters 48 and 4 for setting the maximum and minimum output levels of the switch circuit 41 detected by the circuit 47;
9 is connected to the circuit 47, and also includes a resistor 53 for setting the current value of the control signal P, the display panel 40 including a plurality of light emitting diodes 50 is connected to the detection circuit 47, and each switch 31 The panel 40 is formed so as to be lit in proportion to the remaining amount of seedlings on the seedling stand 18 detected by . As shown in FIG.
~35 are provided in a geometric series pitch, and each switch 3
Respective distances l1, l2, l3, l4 between 1 and 35
The ratio (l1:l2:l3:l4=2:1.5:
1.5:1) and the ratio of the resistance values of the resistors 42 to 46 set by the resistor 53, for example, the resistance values of each of the resistors 42 to 46 are set to R.
1, R2, R3, R4, R5, R1:
R2:R3:R4:R5=2:1.5:1.5:1:1
Set R1 to R5 so that each switch 3
Switch 36 with stepwise off operation from 1 to 35
The reduction in the output level of the display panel 40 is made proportional to the amount of seedling reduction on the seedling stand 18, and the ratio of the light emitting section lengths h1, h2, h3, h4, h5 of the display panel 40, which is turned on when each switch 31 to 35 is turned on. (h1:
h2:h3:h4:h5=2:1.5:1.5:1:
1), the intervals l1, l2 between each switch 31 to 35,
13 and 14, and are formed so that the display panel 40 lights up to display a reduced amount of seedlings on the seedling stand 18.

Furthermore, a seedling pine final detection switch 36 detects floating of the seedling pine 28 near the seedling take-out plate 25.
Seedling pine detection switch 31~ connected in parallel via
35 is connected to the seedling amount detection circuit 47, and a seedling amount alarm circuit 51 is connected to the seedling pine final detection switch 36 to detect whether the seedling pine 28 is properly moving in the direction of the seedling take-out plate 25. In addition, an alarm light emitting diode 52 is connected to the circuit 51 to indicate when the seedling supply condition to the planting claw 19 is poor.

The present invention is constructed as described above, and when the seedling pine 28 is supplied to each of the seedling stands 18, the seedling pine detection switches 31 to 35 and the seedling pine final detection switch 36 are activated. The control signal P from each switch 31 to 35 is input to the seedling amount detection circuit 47 via the switch 36, and each light emitting diode 50 of the display panel 40 is driven to display the entire surface of the panel 40. lights up. Then, the seedling platform 18 is slid back and forth from side to side, and one seedling is taken out from the seedling platform 18 using the planting claw 19 via the seedling take-out plate 25, and the rice planting operation is continuously performed. At the end of the horizontal movement of the table 18, the star wheel 29 rotates to move the seedling pine 28 on the upper surface of the table 18 downward in the direction of the seedling take-out plate 25. As the seedling pine 28 descends, the seedling pine detection switch 3 on the sloped upper end side of the seedling platform 18 is activated.
1 and 32 are sequentially turned off, the output level of the control signal P output from the seedling amount detection switch circuit 41 decreases sequentially, and this is detected by the seedling amount detection circuit 47 and the light emitting diode 50 of the display panel 40 is turned off.
are turned off sequentially, the display panel 40 is partially illuminated by an area proportional to the remaining amount of seedlings 28,
The remaining amount of seedlings on the seedling table 18 is displayed on the display section 39, and the middle of the seedling pine 28 as shown in FIG. 5 and the joint part of the seedling pine 28 as shown in FIG. When the seedling pine rises to the surface, the seedling pine final detection switch 36 is turned off, the entire display panel 40 is turned off, and the warning light emitting diode 52 is turned on to notify the operator of this.

As is clear from the embodiments described above, the present invention has a seedling platform 18 that is reciprocated in the left-right direction and is tilted and supported in the front-rear direction, and a seedling take-out plate 25 is provided at the lower end of the slope of the seedling platform 18. In a device in which a vertical feeding member 29 for moving the seedling pine 28 on the upper surface of the mounting table 18 in the direction of the seedling taking-out plate 25 is disposed on the seedling holding table 18, the seedling taking-out plate 25 and the vertical feeding member 29 are arranged.
The seedling pine 2 supported on the upper surface of the seedling stand 18 between
A seedling pine detection member 36 is provided to detect the seedling pine 2 between the seedling take-out plate 25 and the vertical feeding member 29.
8 can be detected by the seedling pine detection member 36, and the seedling removal plate 2
Even if the seedling pine 28 floats between the vertical feeding member 29 and the seedling pine detection member 36
Since the detection is performed by the seedling pine detection member 36
By using an alarm based on the output, it is possible to correct any defects in the seedling pine 28 that have surfaced before the seedling pine 28 reaches the seedling take-out plate 25, and to prevent defects such as missing plants and poor planting. It has practical effects such as being safer to handle than conventional methods and easily improving the planting function.

[Brief explanation of the drawing]

Fig. 1 is a side view of a riding rice transplanter showing an embodiment of the present invention, Fig. 2 is a plan view of the same, Fig. 3 is a vertical sectional view of the seedling stand, Fig. 4 is a horizontal sectional view of the same, and Fig. 5 is a side view of a riding rice transplanter showing an embodiment of the present invention. 6 and 6 are partial operation explanatory diagrams, FIG. 7 is a front view of the display section, and FIG. 8 is an electric circuit diagram for displaying the remaining amount of seedlings on the seedling stand. 18... Seedling stand, 19... Planting claw, 36... Seedling pine final detection switch.

Claims (1)

[Scope of utility model registration request] A seedling platform 18 that is reciprocated in the left-right direction is tilted and supported in the front-rear direction, and a seedling take-out plate 25 is provided at the lower end of the slope of the seedling platform 18.
In a device in which a vertical feeding member 29 for moving the seedling pine 28 on the top surface of 8 in the direction of the seedling take-out plate 25 is disposed on the seedling table 18, the upper surface of the seedling table 18 is disposed between the seedling take-out plate 25 and the vertical feed member 29. A seedling pine detecting member 36 is provided to detect the seedling pine 28 supported by the seedling pine, and the floating movement of the seedling pine 28 between the seedling take-out plate 25 and the vertical feeding member 29 can be detected by the seedling pine detecting member 36. A seedling planting device for a rice transplanter characterized by the following.