JPH0140420Y2 - - Google Patents

Description

[Detailed description of the invention] "Industrial application field" The present invention is a rice transplanter equipped with a seedling platform that can be moved back and forth from side to side, and a planting section with planting claws for taking out one seedling from the seedling platform. The present invention relates to a seedling usage amount detection device that detects the vertical feed amount of pine seedlings that are slid down by a vertical feed mechanism including a star foil or the like in a machine using a vertical feed amount sensor.

"Conventional Technology" Conventionally, there has been a technology that detects the vertical feed amount of pine seedlings and calculates the amount of remaining seedlings on the seedling stand or the amount of used seedlings.

``Problems to be Solved by the Invention'' The above-mentioned prior art had functional problems such as pine seedlings falling off due to vibrations even when the seedlings were not being fed vertically, and this being detected as vertical feeding of the seedlings.

``Means for Solving the Problems'' However, in the present invention, pine seedlings are placed on the top of a seedling platform, and each seedling is taken out from the platform which is moved back and forth from side to side using a planting claw. In the seedling usage detection device of a rice transplanter that moves the pine seedlings on the top of the seedling platform to the seedling extraction side of the planting claw using the seedling vertical feed mechanism, the vertical feed is detected after a predetermined delay from the end of the left and right reciprocating movement of the seedling platform. By turning on the switch and setting it in the operating state, the operating state is temporally matched with the actual vertical feeding operation of the pine seedlings, and only in this operating state, the vertical feeding amount sensor is used to detect the amount of movement of the pine seedlings on the top surface of the seedling stand. This feature is characterized in that it is configured to detect.

"Function" Therefore, it is possible to prevent vertical feed detection errors due to the time difference between the operation of the seedling vertical feed mechanism and the movement of the pine seedlings on the top surface of the seedling stand, and to reduce the amount of vertical feed of the seedlings due only to the forced vertical feeding of the pine seedlings. can be reliably measured through the vertical feed detection switch, and the actual amount of pine seedlings used can be accurately calculated, excluding the natural movement of pine seedlings caused by mechanical vibration of the seedling stand, and the number of planted pine seedlings and the occurrence of missing plants can be accurately calculated. etc. can be easily and appropriately detected, and
For example, a vertical feed sensor that detects the amount of vertical feed of pine seedlings can be easily incorporated without restrictions on the mounting position, and the seedling mounting stand and vertical feed sensor can be constructed with a simple structure and at low cost. The present invention aims to provide a device for detecting the amount of seedlings used in a rice transplanter.

"Embodiments" Examples of the present invention will be described below in detail based on the drawings.

Fig. 1 is a schematic side view of the riding rice transplanter, and Fig. 2 is a plan view of the same. , 5 is a connecting frame that connects the front and rear car bodies 2, 3 so as to be bendable only in the horizontal direction via a rotation fulcrum shaft 6; Front and rear running wheels to be installed,
11 is a column whose base end is fixed to the front vehicle body 2; 12 is a preliminary seedling stand supported by the column 11; 13 is a driver's seat that is attached to the upper rear part of the front vehicle body 2 via the column 11; and 14 is a front vehicle body 2. 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 planting claws 19 are appropriately driven via the PTO transmission shaft 24 to form seedlings to be continuously planted. In addition, in FIG. 2, 25 in the figure is the main clutch pedal that operates the output of the engine 15 intermittently, and 26, 26 are the front and rear running wheels 7, 8 on the turning side.
Left and right side clutch pedals that interrupt the drive of the
Reference numeral 27 indicates a hydraulic control lever for raising and lowering the planting section 16, and reference numeral 28 indicates a planting clutch lever for interrupting the drive of the PTO transmission shaft 24.

As shown in FIGS. 3 and 4, the seedling stand 18 is supported on the upper surface of the transmission case 20 via upper and lower guide rails 29, 30 so as to be slidable left and right, and the seedlings are taken out from the inclined lower end of the seedling stand 18. A cylindrical shaft 3 for facing the plate 31 and for connecting each transmission case 20...
2, the drive shaft 33 is inserted into the PTO transmission shaft 24.
interlockingly connected to the input shaft 34 for connecting the
The planting claws 19 installed in each transmission case 20 are formed to operate synchronously via the drive shaft 33. In addition, a seedling stand 18 is installed in the central transmission case 20.
A transverse feed shaft 35 and a cam shaft 3 for transversely moving the
The camshaft 36
is connected to the drive shaft 33. One end of the slider 40 is engaged with the reciprocating spiral groove 38 of the camshaft 36 via a pin 39, and the lateral feed shaft 35 is rotatably passed through the other end of the slider 40. Left and right vertical feed arms 4 fixed to the horizontal feed shaft 35
1 and 42 are abutted on both sides of the slider 40, and both ends of the transverse feed shaft 35 are connected and fixed to the seedling stand 18 by a bracket 43, and the slider 40 is moved by the rotation of the cam shaft 36. The seedling platform 18 is configured to reciprocate from side to side together with the transverse feed shaft 35 via the lateral feed shaft 35. A star foil 45, which is a seedling vertical feeding mechanism for forcibly sliding down the pine seedlings 44 on the upper surface of the seedling platform 18 in the direction of the seedling take-out plate 31, is supported on the seedling platform 18 via a vertical feeding shaft 46. The one-way clutch 47 of the vertical feed shaft 46 is connected to the horizontal feed shaft 35 via a connecting rod 48, and the left and right vertical feed cams 49, 50 are fixed to the left and right ends of the horizontal feed shaft 35, and the seedlings are The cam 49 or 50 is brought into contact with the arm 41 or 42 at the end of the horizontal movement of the platform 18, and the transverse feed shaft 35, the connecting rod 48, and the one-way clutch 47 are moved.
The vertical feed shaft 46 and each star wheel 45...
is rotated by a certain amount in one direction, and the pine seedlings 44 on the upper surface of the seedling platform 18 are intermittently sent in the direction of the seedling take-out plate 31. A vertical feed amount sensor 51 for detecting the vertical feed amount of the pine seedlings 44 on the upper surface of the seedling stand 18 is provided near the star foil 45 and on the upper end side of the slant, and as shown in FIG. The sensor 51 is connected to the sensor 51 by a ring body 53 that fixes the magnet 52 to the ring body 53 and a Hall element 54 that is turned on via the magnet 52 by the rotation of the ring body 53.
Configure. Similar to the star foil 45, an opening 55 is formed so that the ring 53 is crimped onto the back surface of the pine seedling 44.
The wheel body 53 is partially exposed on the upper surface of the seedling table 18 through the support shaft 57, and the support shaft 57 is supported by brackets 56, 56 fixed to the back surface of the seedling table 18 to prevent free rotation due to mechanical vibrations, etc. Rubber material for brakes 5
8, 58 are brought into sliding contact with the wheel 53, and the wheel 53 is rotated in conjunction with the sliding effect of the pine seedlings 44.

As shown in FIGS. 3 and 6, left and right switches 59 and 60 are provided to detect the left and right moving end of the seedling platform 18 by contacting the left and right vertical feed arms 41 and 42,
The switch 5 is rotated for a time _t1 during which the pin 39 of the slider 40 changes direction at the left and right ends of the reciprocating spiral groove 38.
9 or 60 is formed to turn on, and
The slider 40 comes into contact with the left and right moving ends and the spring 6
The vertical feed detection cam plates 63 and 64, which are slid against the rotation of the star wheel 45 and the movement of the pine seedling 44, are engaged and supported by the camshaft 36, and the vertical feed detection cam plates 63 and 64 are slid against the rotation of the star wheel 45 and the movement of the pine seedling 44 by the time difference _t2 between the rotation of the star wheel 45 and the movement of the pine seedling 44. A vertical feed detection cam surface 65 corresponding to the actual vertical feed time _t4 delayed from the feed time _t3 is formed on each of the cam plates 63 and 64, and the star of the seedling platform 18 is moved back and forth from side to side. Vertical feed detection switches 66 and 67 that delay the start and end of vertical feed of seedlings of the foil 45
The switch 66 or 67 is turned on by the cam surface 65 of the cam plate 63 or 64, so that the actual vertical feeding operation of the pine seedlings 44 and the vertical feeding detection switches 66, 67 can be linked. .

FIG. 7 is a block diagram for detecting the vertical feed amount of the pine seedling 44, in which the left switch 59 and the vertical feed detection switch 6 are connected in series.
6, right switch 60 and vertical feed detection switch 67
a Schmitt trigger circuit 68 which is connected in parallel and outputs a high level when either the switches 59, 66 or the switches 60, 67 are on;
a counter 69 that counts the amount of rotation of the wheel body 53 detected via the Hall element 54; a NAND circuit 70 that operates the counter 69 based on the detection output of the Hall element 54 only when the Schmitt trigger circuit 68 outputs a high level; Said switches 59, 66
Or counter 6 is reset by turning off 60 and 67.
Monostable multivibrator 71 that resets 9
A counter 69 counts only the vertical feed distance of the pine seedlings 44 of the star foil 45 at the left-right moving end of the seedling platform 18, and a counter 69 counts the amount of movement of the pine seedlings 44 that descends due to, for example, mechanical vibration. 6
It is formed so that it is not counted by 9.

Further, reference amount switches 72, 73, 74 are used to set a reference amount of vertical feed of the pine seedlings 44 to match the vertical feed amount adjustment of the planting claws 19, which is performed according to the planting field of the field and the growing state of the pine seedlings 44. ，
75 and adjustment resistors 76, 77, 78, 79,
Count output A of the counter 69 and the switch 7
A comparator 80 that is a vertical feed amount confirmation device that compares the reference amount outputs B of 2 to 75, and a light emitting diode 81 that indicates a normal state when the counting output A is greater than or equal to the reference amount output B. An off circuit 83 connects the drive transistor 82 of the diode 81 to the comparator 80; and a light emitting circuit connected to the comparator 80 via the drive transistor 84 to indicate an abnormal state when the count output A is smaller than the reference amount output B. diode 8
5, and a light emitting diode 87 for displaying the vertical feed amount of the pine seedlings 44, which is the count output A of the counter 69 via the decoder 86, in comparison with the vertical feed amount of the seedlings of the planting claws 19. Whether or not the vertical feed amount of the pine seedlings 44 is appropriate is displayed via the diodes 81 and 85, and the vertical feed amount of the pine seedlings 44 by the star foil 45 is displayed by the diodes 87. Form it so that it does.

Furthermore, a counter 88 is connected in parallel to the counter 69 to count the total amount of seedlings consumed, a switch 89 is connected to the counter 88 via a divider 90 and a decoder 91, and a switch 89 is connected to the counter 88 to count the total amount of seedlings consumed. The display device 92 is configured to count and display the amount of 44 pine seedlings used per unit area (for example, 1 are).

The present embodiment is constructed as described above, and is moved at a substantially constant speed, and the seedlings on the seedling platform 18 are taken out at a substantially constant speed by the planting claws 19 and planted successively at equal intervals. Then, when one of the switches 72 to 75 corresponding to the vertical feed amount of the pine seedlings 44 of the planting claw 19 is operated to set the reference amount output B to be input to the comparator 80, the seedling platform 18 to be reciprocated is moved to the left. Or, when the right moving end is reached, the left or right switch 59 or 60 is turned on by the left or right vertical feed arm 41 or 42, and the vertical feed cam 49 or 50 is turned on to the vertical feed arm 41 or 42. When the vertical feed shaft 46 is rotated via the horizontal feed shaft 35, the connecting rod 48, and the one-way clutch 47, and the star foils 45 are rotated by a certain amount in one direction, the pine seedlings 44 are vertically fed. At the same time, the slider 40 comes into contact with the vertical feed detection cam plate 63 or 64 that detects the rotation of the star wheel 45 with a delay, and the plate 63 is slightly delayed from the vertical feed timing of the spiral groove 38 with a time difference _t2 . Alternatively, turn on the vertical feed detection switch 66 or 67 using the cam surface 65 of 64,
The actual vertical feeding operation of the pine seedling 44 by the star wheel 45 is detected by the switch 66 or 67, and the Schmitt trigger circuit 68 is driven in conjunction with the vertical feeding detection by each switch 59, 66 or each switch 60, 67. At the same time, the Hall element 5 controls the rotation of the wheel 53 that rotates in conjunction with the pine seedling 44 that is slid down by the star foil 45.
The counter 69 is operated via the NAND circuit 70 by each output of 4, and the vertical feed amount of the pine seedlings 44 by the star foil 45 is counted by the counter 69, and the count output A of the counter 69 and the reference amount output are B is compared by a comparator 80. When the counting output A is greater than or equal to the reference amount output B, the light emitting diode 81 is turned on to indicate that the vertical feed amount of the pine seedlings 44 is normal, while the counting output A is larger than the reference amount output B. When it is small, turn on the light emitting diode 85 and plant the pine seedlings 4.
4 indicates that the vertical feed amount is abnormal, thereby preventing unevenness in the number of planted plants and occurrence of missing plants. The vertical feed amount of the pine seedlings 44 is displayed using the light emitting diodes 87, and is used as a guideline for adjusting the vertical feed amount of the seedlings by the planting claws 19. Further, a counter 88 interlocked with the counter 69 continuously counts the vertical feed amount of the seedlings on the star foil 45, and the total amount of seedling consumption, which is the output of the counter 88, is displayed on the display 92, and the total amount of seedling consumption is displayed per unit area. This is used as a guideline for calculating the required amount of pine seedlings 44 per hit.

"Effects of the Invention" As is clear from the above embodiments, in the present invention, a pine seedling 44 is placed on the upper surface of the seedling platform 18, and one seedling is placed on the planting claw 19 from the seedling platform 18, which is moved back and forth from side to side.
In the seedling usage amount detecting device of the rice transplanter, the pine seedlings 44 on the upper surface of the seedling platform 18 are moved to the seedling extraction side of the planting claw 19 by the seedling vertical feeding mechanism 45. By turning on the vertical feed detection switches 66 and 67 after a predetermined time delay after reaching the moving end and setting them in the operating state, the operating state is temporally matched with the actual vertical feeding operation of the pine seedlings 44, and in the operating state. It is configured so that the vertical feed amount sensor 51 detects the amount of movement of the pine seedlings 44 on the top surface of the seedling platform 18, and the movement of the pine seedlings 44 on the top surface of the seedling platform 18 is detected by the operation of the vertical seedling feeding mechanism 45.
To prevent a vertical feed detection malfunction due to a time difference t ₂ from the 4-movement, and to reliably measure the amount of vertical feed of the pine seedlings 44 due only to the forced vertical feed operation through the vertical feed detection switches 66 and 67. The pine seedlings 4 are raised by mechanical vibration of the seedling stand 18.
It is possible to accurately calculate the actual amount of pine seedlings 44 used, excluding the natural movement in step 4, and to easily and appropriately detect the number of planted pine seedlings and the occurrence of missing plants. 51
etc., can be easily incorporated without restrictions on the mounting position, etc., and has practical effects such as being able to configure the seedling stand 18, the vertical feed sensor 51, etc. with a simple structure and at low cost. be.

[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 side view of the same, Fig. 3 is a partial explanatory view of the planting section, and Fig. 4 is a longitudinal sectional view of the seedling stand. , FIG. 5 is a partial sectional view of the same, FIG. 6 is a partial explanatory view of the camshaft, and FIG. 7 is a block diagram for detecting the vertical feed amount of pine seedlings. 18... Seedling stand, 19... Planting claw, 44... Star foil (seedling vertical feeding mechanism), 45... Seedling vertical feeding mechanism, 51... Vertical feeding amount sensor, 66, 67...
Vertical feed detection switch.

Claims (1)

[Scope of utility model registration request] A pine seedling 44 is placed on the upper surface of the seedling platform 18, and one seedling is taken out by the planting claw 19 from the seedling platform 18, which is moved back and forth from side to side. In the seedling usage detection device of a rice transplanter that moves the pine seedlings 44 on the upper surface of the rice transplanter 18 by the seedling vertical feed mechanism 45, the vertical feed detection switch 66 is activated after a predetermined time delay after the seedling platform 18 reaches the left and right reciprocating end.
67 is turned on to be in the operating state, the operating state is temporally matched with the actual vertical feeding operation of the pine seedlings 44, and only in this operating state, the vertical feeding amount sensor 51 is used to move the pine seedlings on the upper surface of the seedling stand 18. A seedling usage amount detection device for a rice transplanter, characterized in that it is configured to detect the amount of movement of seedlings 44.