JPS6230898Y2 - - Google Patents

Description

[Detailed description of the invention] The present invention is, for example, a rice transplanter that is equipped with a seedling stand and a planting section having a planting claw and that performs rice planting work continuously, by detecting the amount of seedlings remaining on the seedling stand. Regarding the remaining amount of seedlings display device for displaying the amount of seedlings, the terminal plate for the electrodes of a plurality of seedling pine detection switches arranged in parallel connection in the direction of movement of the seedling pine on the seedling stand is integrally formed, and the parts constituting the switch. The seedling stand can be configured simply by reducing the number of wires and the number of wires, and it can be easily assembled by eliminating incorrect wiring, making maintenance and repair easier, and there are concerns about wiring connection resistance. The present invention aims to provide a remaining amount of seedlings display device for a rice transplanter, which allows the switch to be connected to the operating power source and the remaining amount of seedlings display section using an extremely weak current signal without any interference.

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 stand 18 and the lighting claw 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 which supports the seedling pine 8 and intermittently lowers the seedling pine 28 on the upper surface at the end of the horizontal movement of the seedling table 18 is supported at the lower end of the seedling table 18 via an intermittent rotating shaft 30. Seedling pine detection switches 31, 32, 33, 3, which are a plurality of seedling pine sensors, are installed 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.
4 and 35, and the seedling take-out plate 25
A seedling pine final detection switch 36 is provided at the lower end of the seedling platform 18 near the movement locus of the planting claw 19 between the seedling platform 18 and the star foil 29, and an electrode terminal plate is installed vertically on the upper surface of the seedling platform 18 at approximately the center. 37 is pasted and fixed, and one switch piece 31a, 32a, 33a, 34 of each switch 31 to 36 is made to protrude from the upper surface of the seedling stand 18.
a, 35a, and 36a are integrally formed on the terminal plate 37, and the opening 3 of the seedling stand 18 is formed when the seedling mat 28 comes into contact with the terminal plate 37.
The other switch piece 31b, 32b, 33b, 34b, 35b of each switch 31-36, which presses each switch piece 31a-36a through 8...
36b is 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 set to be approximately equal to the unused vertical length of the seedling pine 28, and the seedling pine 28 is removed in such a way that the amount of seedling pine 28 necessary for seedling succession work is left. A distance L ₂ is formed between the take-out plate 25 and the lowest seedling pine detection switch 35.

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 and horizontal dimensions A and B, and display panel 40
The ratios of the vertical and horizontal dimensions a and b are 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.
Resistors 42, 43, 4 for outputting seedling amount detection signals of different voltages depending on the operation of 1 to 35.
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 35. As shown in FIG. 3, the switches 31 to 35 are arranged at a geometric progression pitch in order to widen the mounting intervals on the sloped upper end side of the seedling stand 18, and the respective distances l ₁ and l between the switches 31 to 35 are ₂ , _l3 , _l4 ( _l1 : _l2 : _l3 : _l4 = 2:1.5:1.5:1) and the resistors 42 to 46 set by the resistor 53.
For example, if the resistance values of the resistors 42 to 46 are R ₁ , R ₂ , R ₃ , R ₄ , R ₅ , then R ₁ :R ₂ :R ₃ :R ₄ : _R5 =2:1.5:1.5:
R ₁ to _{R 5} are set so that the ratio is 1:1, and the decrease in the output level of the switch 36 due to the stepwise off operation of each switch 31 to 35 is made proportional to the amount of seedling reduction on the seedling stand 18. The ratio of the lengths h ₁ , h ₂ , h ₃ , h ₄ , h ₅ of the light emitting sections of the display panel 40 that are turned on by the ON operation of 31 to 36 (h ₁ :h ₂ :h ₃ :
h ₄ :h ₅ =2:1.5:1.5:1:1) for each switch 3
1 to 35, and the display panel 40 is approximately the same as the spacing l ₁ , l ₂ , l ₃ , l ₄ , and the remaining amount of seedlings on the seedling platform 18 is reduced.
It is formed so that it lights up and displays.

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 to the seedling amount detection circuit 47,
A seedling quantity alarm circuit 51 is provided which 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, and the seedling supply state to the planting claw 19 is poor. An alarm light emitting diode 52 is connected to the circuit 51 to display this when the alarm occurs.

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 above embodiments, the present invention includes a plurality of seedling pine detection switches 31 to 35 arranged in the direction of movement of the seedling pine 28 on the seedling platform 18 and connected in parallel.
The terminal plate 37 for the electrodes is integrally formed, and the number of parts constituting the switches 31 to 35 and the number of wires can be reduced, and the seedling stand 18 can be constructed simply, eliminating miswiring and the like. The switches 31 to 35 can be easily assembled and maintained and repaired easily, and the switches 31 to 35 can be connected to the operating power source and the remaining seedling amount display section 39 using extremely weak current signals without worrying about wiring connection resistance. It has remarkable effects such as being extremely practical and being able to be connected to other devices.

[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. 7 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. 8... Seedling stand, 28... Seedling pine, 31-35
...Seedling pine detection switch, 37...Terminal board for electrode.

Claims (1)

[Scope of utility model registration request] A remaining amount of seedlings display device for a rice transplanter, characterized in that terminal plates for electrodes of a plurality of seedling pine detection switches arranged in the direction of movement of the seedling pine on a seedling platform and connected in parallel are integrally formed.