JPH1156028A - Power transmission gear for transplanter - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a power transmission gear for a transplanter capable of providing a fixed intrarow spacing even in transplantation of a sloped land. SOLUTION: In this power transmission gear for a transplanter which is equipped with a solenoid clutch for connecting and disconnecting interlocking between a driving gear and a transplanting cup and with an intrarow spacing setting means 104 for setting the increase and decrease of the cutting time of the solenoid clutch, lifts and lowers the transplanting cup by a driving gear 5 and obtains a fixed intrarow spacing by transiently cutting the solenoid clutch at a cutting time corresponding to the operation amount of the intrarow spacing setting means 104 when the transplanting cup reaches a given stopping position, the transmission gear is equipped with an inclination sensor for detecting the inclination of a body in the longitudinal direction and with a control means 111 for lengthening the cutting time of the solenoid clutch corresponding to the inclination angle detected by the inclination sensor in a rising inclination and for shortening the cutting time of the solenoid clutch in a falling inclination so as to obtain fixed intrarow spacing irrespective of the inclination of the body in the longitudinal direction.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a power transmission for an implanting machine.

[0002]

2. Description of the Related Art In a transplanting machine, a traveling device is linked to a driving device such as an engine, and a planting cup is linked to a driving device such as an engine via a swinging link mechanism.
While the planting cup is repeatedly moved up and down by the driving device while traveling by the traveling device, the planting cup is pierced into the ridge at the bottom dead center to transplant a pot seedling. In the power transmission device of the transplanter, an electromagnetic clutch for connecting and disconnecting the drive device with the planting means is provided, and a stock setting means for increasing or decreasing the disconnection time of the electromagnetic clutch is provided, and the planting cup is moved to a predetermined stop position. When the time comes, the electromagnetic clutch is temporarily disconnected for a disconnection time according to the operation amount of the inter-plant setting means to stop the planting cup. At this time, the pot seedlings are received, and the planting interval is set by stopping the raising and lowering of the planting cup. A predetermined inter-strain was obtained (for example, Japanese Patent Application No. 4-270519).

[0003]

However, when transplanting on an incline, when climbing, the slip ratio is high, so the distance between the plants is short, and when descending, the vehicle body is pulled forward on the contrary.
There has been a problem that the interval between the stocks becomes longer and the set predetermined inter-stock cannot be obtained. The present invention has been made in view of the above-mentioned problems, and is intended to obtain a predetermined inter-strain even when transplanted on a slope.

[0004]

A first technical means of the present invention for solving this technical problem is to provide a traveling device 14 and a planting cup 33 which moves up and down.
4 and the planting cup 33 are operatively connected to the driving device 5, and an electromagnetic clutch 72 is provided for connecting and disconnecting the driving device 5 and the planting cup 33, and a stock setting for increasing or decreasing the disconnection time of the electromagnetic clutch 72. Means 104 for raising and lowering the planting cup 33 by the driving device 5, and when the planting cup 33 comes to a predetermined stop position, the inter-cell setting means 10
In the power plant of the transplanter in which the electromagnetic clutch 72 is temporarily disengaged at a disengagement time corresponding to the operation amount of 4 to obtain a predetermined interval, a tilt sensor 107 for detecting a vertical tilt angle in the vehicle longitudinal direction is provided. The inclination sensor 107 is provided so as to obtain a predetermined stock regardless of the inclination of the vehicle body.
According to the inclination angle detected in step (1), there is provided a control means 111 for increasing the disconnection time of the electromagnetic latch 72 on the upward inclination and shortening the disconnection time of the electromagnetic latch 72 on the downward inclination.

A second technical means of the present invention is that the control means 111 sets a long disconnection time of the electromagnetic clutch 72 with respect to the operation amount of the inter-stock setting means 104 when the inter-stock setting is large, The point is that when the inter-stock setting is set to a small value, the disconnection time of the electromagnetic clutch 72 with respect to the operation amount of the inter-stock setting means 104 is set to be short.

[0008] A third technical means of the present invention is that the planting cup 33 can be moved up and down at a plurality of stages of up and down speeds.
Between the drive device 5 and the planting cup 33, the inter-stock transmission mechanism 81
Is provided, and the control means 111 is
When the speed change operation is performed to the high speed side, the disconnection time of the electromagnetic clutch 72 with respect to the operation amount of the inter-stock setting means 104 is set to be short, and when the inter-stock speed change mechanism 81 is shifted to the low speed side, the operation amount of the inter-stock setting means 104 is set. In that the disconnection time of the electromagnetic clutch 72 is set longer.

[0007] Therefore, in the case of a climbing slope, the predetermined time between the strains is obtained by increasing the cutting time of the electromagnetic latch 72, despite the fact that the slip ratio increases and the interval between the strains tends to be shorter. In the case of a downward slope, a predetermined time interval is obtained by shortening the cutting time, even though the interval between the shares tends to be longer because the vehicle body is pulled forward. Further, when the interval between the shares is set to be large, the disconnection time of the electromagnetic clutch 72 with respect to the operation amount of the interval setting unit 104 becomes longer. When the stock is set to a small value, the disconnection time of the electromagnetic clutch 72 with respect to the operation amount of the stock setting means 104 is shortened. For this reason,
When the stock is short, the stock can be adjusted accurately, and when the stock is long, the necessary stock adjustment can be easily made.

When the inter-stock transmission mechanism 81 is shifted to a higher speed, the disconnection time of the electromagnetic clutch 72 with respect to the operation amount of the inter-stock setting means 104 is set shorter. When the inter-stock transmission mechanism 81 is shifted to a lower speed, the disconnection time of the electromagnetic clutch 72 with respect to the operation amount of the inter-stock setting means 104 is set longer.

[0009]

Embodiments of the present invention will be described below with reference to the drawings. FIG. 3 shows details of the power transmission system in the transmission case of the transplanter. This transplanter is a riding type having a seat on a traveling vehicle body, and runs in the longitudinal direction over a ridge covered with a multi-film to plant seedlings with soil while forming planting holes in the ridge.

In FIG. 3, an engine (drive unit) 5 is mounted on the front of the traveling vehicle body, and an input section of the transmission case and an output section of the engine 5 are linked by a wrapping transmission means 9. The power that has entered the transmission case by the winding transmission means 9 is branched into the traveling system and the transplant system, the traveling system power is taken out from the wheel transmission shaft 10, and the transplant system power is transmitted from the PTO horizontal shaft 11 and the PTO front-rear shaft 12. Taken out.

At the left and right ends of the wheel transmission shaft 10, a transmission case 13 swinging up and down around the axis is pivotally supported, and left and right traveling drive wheels (traveling devices) 14 are supported via the transmission case 13. The traveling drive wheels 14 can be driven by the wrapping transmission means 13 a in the transmission case 13. The left and right driving wheels 14 roll in the grooves between the ridges. Left and right transmission cases 13
By swinging up and down around the axis of the wheel transmission shaft 10, the relative vertical position between the traveling drive wheel 14 and the traveling vehicle body can be adjusted.

Note that the transplanting work section of the traveling vehicle body has a seedling supply device, a planting device 21, a multi-perforation device, and the like, and a wrapping transmission means 29 for transmitting power to the planting device 21 and the like is supported. ing. The planting device 21 is provided with a beakable openable and closable planting cup 33 at the end of the parallel link, and can be moved up and down by a crank motion of a crankshaft 34 interlocked with the wrapping transmission means 29. When the planting cup 33 rises due to the rotation of the crankshaft 34, it is detected by the upper limit detection switch 28. The upper limit detection switch 28 detects that the planting cup 33 is at the top dead center.

Although not shown, the planting cup 33 is not shown.
Is provided with an opening / closing means, which opens the beak when it descends and pierces the ridge B. With the piercing and opening of the beak, a hole is opened in the ridge and a seedling with soil is planted. In addition, a multi-perforation device is provided in front of the planting cup 33, and before the raising and lowering of the planting cup 33, the multi-film covered on the ridge is incinerated with a gas burner at equal intervals in the ridge longitudinal direction to form a hole. .

The seedling supply device in the transplanting work section drops and feeds the soiled seedling to the planting cup 33. The power of the engine 5 is transmitted from the winding transmission means 9 to the input shaft 51. The transmission case has a rotating shaft 52 parallel to the input shaft 51,
Intermediate shaft 53, Intermediate shaft 54, Back shaft 57, Wheel transmission shaft 1
0 and PTO horizontal shaft 11 are rotatably supported, respectively.
A PTO front-rear shaft 12 in the front-rear direction is provided so as to project rearward.

The gear 51a on the input shaft 51 is meshed with the idle gear 55 on the rotary shaft 52. The clutch gear 56 is slid on the idle gear 55 so that the engagement portion engages with the idle gear 55 so that the input gear is engaged. Power can be transmitted from the shaft 51 to the rotation shaft 52. The clutch gear 56 is resiliently pressed in the direction in which it engages with the idle gear 55, and forms a pawl-type main clutch 58.

The rotating shaft 52 has a clutch gear 56
In addition, the gears 60 and 61 are supported so as to be integrally rotatable.
The transmission gear body 62 slides and rotates integrally with the intermediate shaft 53.
The transmission gear body 62 is supported freely.
The gear portions 62A and 62C which can be meshed with the gears 6 and 60 alternatively.
Is formed. Gears 63 and 64 are provided on the back shaft 57.
Gear 63 meshes with the gear 61
The gear portion 62C of the transmission gear body 62 meshes with the gear 64.
It is possible. Therefore, sliding of the transmission gear body 62
Thus, two forward speeds and one reverse speed can be achieved.
That is, the vehicle travels by the transmission gear body 62, the gear 60, and the gear 56.
A transmission mechanism 65 is formed, and the gear portion 62C is meshed with the gear 60.
First speed F of forward when combined ₁(Planting), gear
When the portion 62A is engaged with the gear 56, the second forward speed F _Two
(Moving). Further, the gear portion 62C is connected to the back shaft 57 side.
Becomes reverse R when connected to.

A transmission gear 66 and a parking brake (not shown) are provided on the intermediate shaft 53.
Meshes with a large gear 68 fixed to the wheel transmission shaft 10. One end of the rotating shaft 52 protrudes from the transmission case, and an electromagnetic clutch 72 is fixed to an outer end of the rotating shaft 52. A coupling shaft 73 having a cylindrical shaft shape surrounds the outer end of the rotating shaft 52. The transmission case is rotatably supported by the transmission case.
And the coupling shaft 73 rotate integrally, so that the power for the transplantation system can be branched and extracted.

A gear 74 and a gear 79 are fixed to the coupling shaft 73, and the gear 74 is
Can be engaged with the idler gear 75 loosely fitted to the
9 can mesh with a gear 80 fixed to the intermediate shaft 54,
The idler gear 75 further meshes with the gear 76 on the PTO horizontal shaft 11 so as to transmit the power for the transplantation system. Therefore, the speed between the stocks can be shifted in two stages by sliding between the idler gear 75 and the gear 80. The gear 74, the idler gear 75, the gear 79, and the gear 80 allow the planting cup 3 to be shifted.
An inter-stock speed change mechanism 81 is configured to be able to move up and down at a two-step speed. That is, the inter-stock transmission mechanism 81 is provided between the driving device 5 and the planting cup 33, and the gear 74 is provided.
And the idler gear 75 mesh with each other,
1 is a high-speed inter-stock shift 1, and when the gear 79 and the gear 80 are engaged, the inter-stock speed change mechanism 81 is a low-speed inter-stock shift 2.

A bevel pinion 77 is fixed to the PTO horizontal shaft 11 and meshes with a bevel gear 78 on the PTO front-rear shaft 12 to divide the power for the transplantation system into two systems. , The seedling supply device is driven by the PTO front-rear shaft 12, respectively. A rotation pulse sensor 85 is attached to an outer end of the rotation shaft 52 from the electromagnetic clutch 72. For example, the rotation pulse sensor 85 may have a structure in which the proximity sensor counts the unevenness of the sprocket externally fixed to the rotation shaft 52 using a proximity sensor.
Is detected, and several tens of pulses are generated for each rotation of the rotating shaft 52.

Therefore, when the planting cup 33 is raised (the upper limit detection switch 28 is detected), the crankshaft 34
Every time it rotates, it lowers from the raised state of the planting cup 33 and returns to the raised position again as shown in FIG. Planting cup 3
When the electromagnetic clutch 72 is demagnetized and the power for the transplantation system is turned off when the position of the transplanting cup 3 returns to the raised position, as shown in FIG.
3 is stopped in the ascending state, so that a stock between the reference minimum stock (120 mm or 240 mm) or more corresponding to one rotation of the crankshaft 34 is obtained. That is, if the interval between the plants is set by the control means 111 described later, when the upper limit detection switch 28 detects the rise of the planting cup 33, the electromagnetic clutch 72 is demagnetized and the power for the transplantation system is turned off. The electromagnetic clutch 72 counts the number of pulses during demagnetization, and then activates the electromagnetic clutch 72 to transmit the power of the transplantation system, and lowers the planting cup 33 which has been raised to perform planting. By changing the number of pulses counted while the electromagnetic clutch 72 is demagnetized, the interval between the lines is adjusted.

For example, the rotation pulse sensor 85 generates 24 pulse signals every one rotation of the rotating shaft 52. If the inter-stock transmission mechanism 81 is set to the inter-stock transmission 1, the crankshaft While 34 makes one rotation, the transplanter travels 12 cm, the rotating shaft 52 makes three rotations,
The rotation pulse sensor 85 generates 72 pulse signals. At this time, while the transplanter travels 1 cm (1 cm between
The rotation pulse sensor 85 generates 6 pulse signals at the time of hitting.

If the inter-stock transmission mechanism 81 is set to inter-stock transmission 2, for example, while the crankshaft 34 makes one rotation, the transplanter travels 24 cm, the rotation shaft 52 makes six rotations, and the rotation pulse sensor 85 generates 144 pulse signals. At this time, the rotation pulse sensor 85 generates six pulse signals while the transplanter travels 1 cm (per 1 cm between the strains).

FIG. 1 shows a block diagram of a control system. In FIG. 1, 100 is a battery, 101 is a main switch, 102 is a main clutch switch, and the main clutch 5
8 is a switch for enabling connection. Reference numeral 103 denotes a stock change switch constituted by a limit switch, which is provided, for example, in correspondence with a stock change lever 87 for performing a shift operation of the stock change mechanism 81. When the stock change mechanism 81 is set to the stock change 2, It is configured to detect this and turn on. Reference numeral 104 denotes a stock setting means (a stock adjustment dial) for setting the stock, comprising a stock setting switch 105 and a stock setting variable resistor 106,
The inter-stock setting switch 105 can be switched on and off in two stages (A, B), and the inter-stock setting variable resistor 106 can be switched in seven stages (1, 2, 3, 4, 5, 6, 7). The setting means 104 comprises 14 steps (A-1, A-2, A-3, A-4, A-
5, A-6, A-7, B-1, B-2, B-3, B-
4, B-5, B-6, B-7).

Reference numeral 107 denotes an inclination sensor which detects the vertical inclination angle α of the transplanter in the vehicle longitudinal direction. Reference numeral 108 denotes a planting cup relay. When the planting cup relay is excited, a current flows through the solenoid 72 a of the electromagnetic clutch 72, and the electromagnetic clutch 72 is turned on and off via the planting cup relay 108.

Reference numeral 111 denotes a control means,
5 is constituted by a microcomputer or the like having a function of counting pulses from 5 and other arithmetic processing functions. The upper limit detection switch 28, the main clutch switch 102, the inter-stock speed change switch 103, the inter-stock setting switch 105 of the inter-stock setting means 104, and A signal from the inter-stock setting variable resistor 106 is input, and the electromagnetic clutch 7 is set in accordance with a predetermined set control order.
The control means 111 includes a disconnection control means 112 for controlling the disconnection of the electromagnetic clutch 72 via the planting cup relay 108, and a connection control means 113 for controlling the connection of the electromagnetic clutch 72. And a disconnection period setting means 11 for setting a disconnection period of the electromagnetic clutch 72.
And a cutting period correction unit 115 for correcting the cutting period set by the cutting period setting unit 114 according to the tilt angle α detected by the tilt sensor 107.

When the inter-stock speed change switch 103 is turned off (inter-stock speed change 1), the disconnection period setting means 114 performs the inter-stock speed change 1 shown in FIG.
Of the electromagnetic clutch 72 (rotational pulse sensor 85 for disconnecting the electromagnetic clutch 72)
) And the inter-stock shift switch 10
When 3 is ON (inter-stock shift 2), the disconnection period A of the electromagnetic clutch 72 (the rotation pulse sensor 85 for disconnecting the electromagnetic clutch 72) is determined by the table of the inter-stock shift 2 shown in FIG. Number of pulses).

That is, when the inter-stock shift switch 103 is off (inter-stock shift 1), as shown in FIG.
Is set so that the disconnection period A of the electromagnetic clutch 72 is increased by the period during which the rotation pulse sensor 85 generates 6 pulses (1 cm between the stocks) each time the number of gears set by 1 increases by one step. Fine adjustments can be made at 1 cm intervals.

For example, when the number of stages set by the inter-street setting means 104 is A-1, the disconnection period A of the electromagnetic clutch 72 is set to 42 pulses, the inter-strain is set to 19 cm, and the number of stages is A
At −6, the disconnection period A of the electromagnetic clutch 72 is set to 72 pulses, and the distance between the lines is set to 24 cm. When the inter-stock shift switch 103 is ON (inter-stock shift 2), as shown in FIG.
Each time the number of steps set by 1 is increased by one step, the disconnection period A of the electromagnetic clutch 72 is set so as to increase by the period during which the rotation pulse sensor 85 generates 12 pulses, and the interval between the strains is slightly increased from 28 cm to 44 cm at 2 cm intervals. It can be adjusted. Between 44 cm and 58 cm between the stocks, every time the number of steps set by the stock setting means 104 increases by one step,
The period A during which the electromagnetic clutch 72 is disconnected corresponds to the rotation pulse sensor 8.
5 is set so as to increase only during the period in which 18 pulses are generated, and the interval between the strains can be finely adjusted from 44 cm to 58 cm at 3 cm intervals.

For example, when the number of steps set by the inter-stock setting means 104 is A-1, the disconnection period A of the electromagnetic clutch 72 is set to 24 pulses to make the inter-stock 28 cm, and the number of steps set by the inter-stock setting means 104 is A-6. In this case, the disconnection period of the electromagnetic clutch 72 is set to 84 pulses, the interval between the stocks is set to 38 cm, and when the number of gears set by the inter-stock setting means 104 is B-6, the disconnection period A of the electromagnetic clutch 72 is set to 18
Set to 6 pulses to 55 cm between lines.

The cutting period correcting means 115 is provided with the tilt sensor 1
Assuming that the inclination angle detected at 07 is α (degree), the cutting period A (pulse) set by the cutting period setting unit 114
Thus, a corrected cutting period B (pulse) is obtained by the formula of A × (1 + αβ). Here, the inclination angle α is a value of “positive (+)” in the case of an upward slope, and is a value of “negative (−)” in the case of a downward slope. β is a correction coefficient, which is determined by experimental data, is given as a fixed value or a variable value according to the inclination angle α, and is represented by the corrected cutting period B (pulse) obtained by the above equation of A × (1 + αβ). 6 and the correction coefficient β is determined so as to obtain the predetermined stock (cm) set by the stock setting means 104 shown in FIG. That is, by obtaining the cutting period B (pulse) corrected by the formula of A × (1 + αβ), the inclination detected by the inclination sensor 107 is obtained so that a predetermined stock can be obtained regardless of the vertical inclination in the vehicle longitudinal direction. In accordance with the angle α, the disconnection time of the electromagnetic clutch 72 is lengthened on the upward inclination, and the disconnection time of the electromagnetic latch 72 is shortened on the downward inclination.

The disconnection control means 112 disconnects the electromagnetic clutch 72 when the upper limit detection switch 28 is ON, and sets the disconnection state of the electromagnetic clutch 72 during the disconnection period B of the electromagnetic clutch 72 corrected by the disconnection period correction means 115. When it has not reached, that is, when the corrected electromagnetic clutch 7
The value obtained by sequentially subtracting the number of pulses input when the electromagnetic clutch 72 is disconnected from the number of pulses in the disconnection period B of 2 is 0.
If it is determined that the value is larger than the predetermined value, the electromagnetic clutch 72 is disconnected.

The connection control means 113 connects the electromagnetic clutch 72 when the upper limit detection switch 28 is off, and sets the disconnection state of the electromagnetic clutch 72 to the disconnection period correction means 1.
When the disengagement period B of the electromagnetic clutch 72 is reached, that is, the value obtained by sequentially subtracting the number of pulses input in the disengaged state of the electromagnetic clutch 72 from the corrected number of pulses of the disengagement period B of the electromagnetic clutch 72 is obtained. When it is determined that the value has become 0, the electromagnetic clutch 72 is connected.

Next, the operation will be described with reference to the flowchart of FIG. In the transfer operation, if the main switch 101 and the main clutch switch 102 are turned on, the electromagnetic clutch 72 is turned on in step 1, and the transfer operation is started. In step 2, it is determined whether the upper limit detection switch 28 is on or off. If the upper limit detection switch 28 is off, the process returns to step 1; Turn off.

Therefore, during one revolution of the crankshaft 34,
The electromagnetic clutch 72 is kept on, the planting cup 33 is lowered from the raised state and planted, and then returns to the raised position again, at which point the electromagnetic clutch 72 is turned off. In step 4, it is determined whether the inter-stock speed change switch 103 is on or off. If the inter-stock speed change switch 103 is off, then in step 5, the conditions set by the inter-stock speed change unit 104 are used according to the inter-stock speed change 1 table shown in FIG. Electromagnetic clutch 7
2 is set (the number of pulses of the rotation pulse sensor 85 for disconnecting the electromagnetic clutch 72), and the process proceeds to step 6.

If it is determined in step 4 that the inter-stock speed change switch 103 is ON, the process proceeds to step 8 and proceeds to step 8.
FIG. 7 shows the conditions set by the inter-stock setting means 104.
The electromagnetic clutch 72 is set according to the table of the inter-shift 2 shown in FIG.
Is set (the number of pulses of the rotation pulse sensor 85 for disconnecting the electromagnetic clutch 72), and the routine proceeds to step 9.

In step 6, the disconnection period setting means 114
The cutting period A (pulse) shown in FIG.
The inclination angle detected by the inclination sensor 107 is corrected according to the formula of A × (1 + αβ) according to α (degrees) to obtain a corrected cutting period B (pulse). In step 7, it is determined whether the disconnection state of the electromagnetic clutch 72 has reached the disconnection period B of the electromagnetic clutch 72 corrected in step 6, that is, based on the number of pulses in the disconnection period B of the electromagnetic clutch 72 corrected in step 6. It is determined whether or not the value obtained by sequentially subtracting the number of pulses input when the clutch 72 is in the disengaged state is 0. If the value is not 0, the process returns to step 3 to disconnect the electromagnetic clutch 72. Step 1
And the electromagnetic clutch 72 is connected.

In step 9, the disconnection period setting means 114
The cutting period A (pulse) shown in FIG.
The inclination angle detected by the inclination sensor 107 is corrected according to the formula of A × (1 + αβ) according to α (degrees) to obtain a corrected cutting period B (pulse). In step 10, it is determined whether or not the disconnection state of the electromagnetic clutch 72 has reached the disconnection period B of the electromagnetic clutch 72 corrected in step 9;
The value obtained by sequentially subtracting the number of pulses input when the electromagnetic clutch 72 is disconnected from the number of pulses in the disconnection period B of 2 is 0.
If the value is not 0, the process returns to step 3 to disconnect the electromagnetic clutch 72. If the value is 0, the process returns to step 1 to disconnect the electromagnetic clutch 72.

Accordingly, when the inter-stock transmission mechanism 82 is set to inter-stock transmission 1, the transplanter 1 travels for the reference minimum stock (120 mm) while the crankshaft 34 makes one rotation, and the crankshaft 34 Is in a high-speed state, but the disconnection period A of the electromagnetic clutch 72 is set to increase by the period during which the rotation pulse sensor 85 generates six pulses each time the number of stages set by the inter-stock setting means 104 increases by one stage. 1 set by the inter-stock setting means 104
The inter-stock adjustment amount per step becomes about 10.0 mm.

Further, when the inter-stock transmission mechanism 81 is set to the inter-stock transmission 2, the transplanter 1 travels by the reference minimum stock (240 mm) while the crankshaft 34 makes one rotation, and the crankshaft 34 Becomes slow. At this time, if the inter-stock speed change switch 103 is off, the inter-stock setting means 1
The inter-stock adjustment amount per step set in step 04 is about 1
Each time the number of gears set by the inter-stock setting means 104 increases by one by turning on the inter-stock speed change switch 103, the disconnection period A of the electromagnetic clutch 72 causes the rotation pulse sensor 85 to output 12 or 18 pulses. Since it is set so as to increase only during the period of occurrence, the inter-stock adjustment amount per stage set by the inter-stock setting means 104 becomes about 20.0 mm or 30.0 mm.

Therefore, the control unit 111 sets a long disconnection time of the electromagnetic clutch 72 with respect to the amount of operation of the inter-stock setting means 104 when the inter-stock is set to be large, and sets the inter-stock to a small when the inter-stock is set to be small. The disconnection time A of the electromagnetic clutch 72 with respect to the operation amount of the inter-stock setting means 104 is set short. Further, when the inter-stock transmission mechanism 81 is shifted to the inter-stock shift 1, the disconnection time A of the electromagnetic clutch 72 with respect to the operation amount of the inter-stock setting means 104 is set short, and the inter-stock transmission mechanism 81 is shifted to the inter-stock shift 2. Then, the disconnection time A of the electromagnetic clutch 72 with respect to the operation amount of the inter-stock setting means 104 is set longer.

At this time, when the inclination angle α detected by the inclination sensor 107 is 0 degree (when there is no vertical inclination), the cutting period A set by the inter-cell setting means 104 is corrected according to the inclination angle α. The cutting period B is A × (1+
αβ) = A, and the corrected cutting period B becomes equal to the set cutting period A. Therefore, when there is no inclination, the stocks shown in FIGS. 6 and 7 set by the stock setting means 104 can be obtained.

When the inclination angle α detected by the inclination sensor 107 is a value of “positive (+)” (in the case of an upward inclination), the cutting period A set by the inter-cell setting means 104 is corrected according to the inclination angle α. The cutting period B obtained is A × (1 + αβ)>
A, and the corrected cutting period B becomes longer than the set cutting period A. Therefore, in the case of climbing slope, despite the tendency that the stock ratio tends to be shorter due to the higher slip ratio,
The predetermined stocks shown in FIGS. 6 and 7 set by the stock setting means 104 can be obtained.

When the inclination angle α detected by the inclination sensor 107 is a value of “negative (−)” (in the case of a downward inclination), the cutting period A set by the inter-cell setting means 104 is corrected according to the inclination angle α. The cutting period B obtained is A × (1 + αβ) <
A, and the corrected cutting period B becomes shorter than the set cutting period A. Therefore, in the case of a downward slope, the predetermined stock shown in FIGS. 6 and 7 set by the stock setting means 104 can be obtained, although the stock tends to be long because the vehicle body is pulled forward.

In the above-described embodiment, the engine 5 is used as the driving device, but a motor or the like may be used instead as the driving device. Further, the present invention is not limited to the above embodiment, and can be variously modified. For example, the electromagnetic clutch 72 may be attached to the intermediate shaft 53 to connect and disconnect power between the intermediate shaft 53 and the gear 75. Further, the transplanter 1 is exemplified for a multi-ridge type, but may be a type for a ridge not coated with a multi-film, that is, a type without the multi-perforation device 22.

Further, in the above-described embodiment, the inter-stock transmission switch 103 for detecting that the inter-stock transmission mechanism 81 has been shifted to the low-speed inter-stock transmission 2 is provided. Low speed inter-stock shift 2
When it is detected that the speed change operation has been performed,
Although the automatic setting is made so that the disconnection time of the electromagnetic clutch 72 with respect to the operation amount of the operation 04 becomes longer, instead, it is detected that the inter-gear transmission mechanism 81 has been shifted to the high-speed inter-gear shift 1. An inter-stock speed change switch 103 is provided. When the inter-stock speed change switch 103 detects that the inter-gear speed change mechanism 81 has been shifted to the high speed side inter-gear speed shift 1, the disconnection time of the electromagnetic clutch 72 with respect to the operation amount of the inter-stock setting means 104 May be automatically set so as to be shorter.

In the above-described embodiment, the inter-stock transmission mechanism 81 can be set to the inter-stock transmission 1 and the inter-stock transmission 2. However, the number of inter-stock transmission gears is not limited to two, and the number of inter-stock transmission gears is not limited to two. May be changed to three or more steps.

[0047]

According to the present invention, in accordance with the inclination angle detected by the inclination sensor, the control unit 111 increases the disconnection time of the electromagnetic latch 72 for the upward inclination and increases the disconnection time of the electromagnetic latch 72 for the downward inclination. Since the length is shortened, in the case of an uphill slope, a predetermined time interval can be obtained by increasing the cutting time of the electromagnetic latch 72, despite the tendency that the interval between the strains tends to be shorter due to a higher slip ratio. In the case of inclination, the predetermined time interval can be obtained by shortening the cutting time, despite the tendency that the interval between the lines tends to be long because the vehicle body is pulled forward. Therefore, even when transplanting on a slope, a predetermined line can be reliably obtained.

[Brief description of the drawings]

FIG. 1 is a block diagram showing one embodiment of the present invention.

FIG. 2 is a flowchart.

FIG. 3 is an explanatory diagram of a power transmission system in a transmission case.

FIG. 4 is an explanatory diagram showing a locus of a planting cup.

FIG. 5 is a plan view showing an inter-stock transmission lever and an inter-stock transmission switch.

FIG. 6 is a diagram showing a relationship between an electromagnetic clutch disengagement period set by a stock setting unit and stocks.

FIG. 7 is a diagram showing a relationship between a period of disconnection of an electromagnetic clutch set by a stock setting means and stocks.

[Explanation of symbols]

 REFERENCE SIGNS LIST 1 transplanter 2 traveling vehicle body 5 engine (drive device) 14 traveling drive wheel (traveling device) 33 planting cup 72 electromagnetic clutch 81 inter-stock transmission mechanism 103 inter-stock transmission switch 104 inter-stock setting means 107 inclination sensor 111 control means

Claims (3)

[Claims] A traveling device (14) and a planting cup (33) that moves up and down are provided, and the traveling device (14) and the planting cup (33) are interlocked to a driving device (5) to drive the plant. An electromagnetic clutch (72) for connecting and disconnecting the interlock between the device (5) and the planting cup (33) is provided.
2) means for setting stocks to increase or decrease the cutting time (104)
Is provided, and the planting cup (3) is driven by the driving device (5).
3) The lifting and lowering operation is performed, and when the planting cup (33) comes to a predetermined stop position, the electromagnetic clutch (72) is temporarily disconnected for a predetermined disconnection time according to the operation amount of the inter-stock setting means (104), and the predetermined time is set. In the power plant of the transplanter, the inclination sensor (107) for detecting the vertical inclination angle in the front-rear direction of the vehicle body is provided. According to the inclination angle detected by the sensor (107), the electromagnetic latch (7
2) A power transmission device for a transplanter, wherein a control means (111) for increasing the cutting time and shortening the cutting time of the electromagnetic latch (72) when descending is provided. 2. The control unit (111) sets a long disconnection time of the electromagnetic clutch (72) with respect to an operation amount of the inter-stock setting unit (104) when the inter-stock interval is set to a large value, and reduces the inter-stock interval. The electromagnetic clutch (7) with respect to the operation amount of the inter-stock setting means (104).
2. The power transmission device for an implanting machine according to claim 1, wherein the cutting time in the step (2) is set to be short. 3. An inter-stock transmission mechanism (81) is provided between the driving device (5) and the planting cup (33) so that the planting cup (33) can move up and down at a plurality of stages of lifting and lowering speeds. The control means (111) comprises an inter-stock speed change mechanism (81);
When the gear is shifted to the high-speed side, the inter-stock setting means (104)
The disconnection time of the electromagnetic clutch (72) with respect to the operation amount is set to be short, and the electromagnetic clutch (72) with respect to the operation amount of the inter-stock setting means (104) when the inter-stock transmission mechanism (81) is shifted to a lower speed side. 2. The apparatus according to claim 1, wherein the cutting time is set to be long.
Or a power transmission device for an implanting machine according to 2.