JPH0832207B2 - Planting depth adjusting device for rice transplanter - Google Patents

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a planting depth adjusting device for a rice transplanter, and more particularly when the traveling speed of a traveling vehicle body is changed,
The present invention relates to a device for automatically adjusting the planting depth of seedlings.

[0002]

2. Description of the Related Art A well-known rice transplanter has a traveling speed adjusting device provided on a traveling vehicle body regardless of whether it is a riding type or a walking type, and a planting depth adjusting device provided on a planting portion having a float. Most of the time, this traveling speed control device and planting depth control device, depending on the state of the field, the size of the seedlings, the growth situation of the seedlings, etc.
Each is adjusted individually to achieve the optimum condition.

[0003]

However, for example, when the traveling speed of the traveling vehicle body is increased in a deep field, the flow rate of the traveling vehicle is increased.
When the aircraft receives buoyancy and its ground pressure fluctuation is not sufficiently performed, the aircraft moves in a slightly floating state.
The height of the machine will be supported slightly higher, and the planting depth of the seedlings will be shallower than the planting depth preset by the planting depth adjusting device. It is a cause. Therefore, the present invention relates the traveling speed adjustment of the traveling vehicle body and the planting depth adjustment so that, for example, when the traveling speed is adjusted to be high, the planting depth becomes slightly deeper and the actual planting depth is increased. It is an object of the present invention to provide a planting depth adjusting device for a rice transplanter, which has a proper depth to prevent falling seedlings, floating seedlings, etc. due to shallow planting.

In order to achieve the above-mentioned object, the present invention mounts a planting device having a float on a traveling vehicle body, and provides a speed adjusting device for adjusting the traveling speed on the traveling vehicle body. A planting depth adjusting device for adjusting the planting depth of the seedling by vertically moving the rear pivot point is provided, and the planting depth adjusting device includes an operation lever for vertically adjusting the rear pivot point of the float, and A lock body that locks the lever at the adjustment position and a position control device that moves the lock body are provided. When the speed control device is operated to change the traveling speed of the machine, the position control device causes the seedling to move. The planting depth adjusting device of the rice transplanter is configured so that the locking body is moved so that the planting depth is changed.

[0005]

With the above-described structure, the planting depth adjusting device for a rice transplanter according to the present invention adjusts the planting depth of the seedlings according to the traveling speed of the machine, thereby performing highly accurate rice planting work. . Also, when you change the traveling speed of the aircraft by operating the speed adjustment device,
Since the locking body is moved by the position control device to change the planting depth of the seedlings, the structure is simple and the control is very good, and the falling seedlings, floating seedlings and the like due to shallow planting do not occur.

[0006]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS An embodiment of the present invention will be specifically described below with reference to the accompanying drawings. In the drawings, reference numeral 1 denotes a four-wheeled riding vehicle body, which is a pair of left and right front wheels 2.
Further, the rear wheel 3 is equipped, the engine 4 is mounted on the front part, and the planting device 6 is mounted on the rear part via a lifting link 5 that moves up and down by a hydraulic cylinder.

The planting device 6, which also serves as a transmission case, is connected to the elevating link 5 in a rolling and pitching manner and has its upper end traveling above the main body frame 7 which receives power from the traveling vehicle body 1. A seedling platform 8 that is inclined forward so as to approach the vehicle body 1 is supported so as to reciprocate in the left-right direction along the guide rails 9 and 10 at a predetermined interval. A seedling receiving plate 11 fixed to the main body frame 7 side is provided at the inclined lower end of the seedling placing table 8 so as to be long in the left-right direction, and a plurality of seedling taking-out ports are provided on the seedling receiving plate 11 at predetermined intervals. (Not shown).

Corresponding to each of these seedling outlets,
A base 12 is pivotally supported by the main body frame 7, and an implanting body 12 is provided for vertically moving a predetermined locus to take out the seedlings one by one from the seedling take-out port and plant them on the rice field. Below the main body frame 7, there are a center float 13 and side floats 14 provided on both the left and right sides of the center float 13, with the front end side being the fulcrum of the respective rear end portions. It is arranged so that it can move up and down.

Further, the planting device 6 is provided with a planting depth adjusting device 15. This planting depth adjusting device 15
Rotating shaft 1 provided in the lower part of the main body frame 7 in the left-right direction
The upper end of a bracket 18 which is erected on the rear upper surface of the center float 13 and the side float 14 is pivotally attached to an intermediate position of a rotary arm 17 whose tip is vertically pivotably fixed to 6, The front end of the operation arm 19 is fixed to the rear end of the rotating arm 17, and the base end side thereof projects rearward.
It can move up and down in the engaging groove of the locking body 20 and can lock in a predetermined upper and lower range. A link arm 21 is connected to the rotary shaft 16, and a link rod 23 is connected between the link arm 21 and one end of a bell crank 22 pivotally supported below the front of the main body frame 7. The other end of the bell crank 22 is provided at the front part of the center float 13 so as to be switched by its vertical movement.
4 is connected to the base side.

When the locking position with the locking body 20 is changed by holding the rear end of the operation arm 19, the rotating arm 17,
The vertical distance between the center float 13 and the side float 14 relative to the main frame 7 is changed via the bracket 18, and the planting depth of the seedlings planted by the planter 12 is adjusted, and at the same time, the link arm 21 is formed. The hydraulic switching valve 24 is also moved up and down via the link rod 23 and the bell crank 22 to adjust the distance between the tip of the center float 13 and the main body frame 7.

The base portion 20a of the locking body 20 is centered around the pin 26 by the position control device 25 composed of a solenoid, when the solenoid is turned on, in the counterclockwise direction in FIG. 2, and when the solenoid is turned off. Is rotated clockwise in Fig. 2 to return to its original position.
This solenoid is turned on / off by the control arm 27.
Controlled by. An operation wire 28 is connected to the control arm 27.

The operation wire 28 includes a traveling gear lever 29 provided on the traveling vehicle body 1 side and an interlocking wire 30 which operates when shifting to a high speed side, and a throttle lever 31 which operates when pulling to a high output side. Interlocking wire 32, output side
Tension belt 3 in which the pulley 33 and the input pulley 34 on the side of the planting device are double pulleys and are wound between both pulleys.
The interlocking wire 4 which operates when the double tensions 37 and 38 rolling on the wheels 5 and 36 are operated via the operation lever 39 so that the rotation of the planting device side input pulley 34 becomes high speed.
0, the dense wire for increasing the rotation speed of the implant body 12 and the interlocking wire 42 that operates when the adjusting knob 41 for decreasing the rotation speed and decreasing the rotation speed are adjusted to the dense transplant side are respectively connected.

In the riding type rice transplanter having such a structure,
When performing rice planting work in the field, the front wheels 2 and the rear wheels 3 of the traveling vehicle body 1 are in contact with the cultivator in the field, respectively, and the planting device 6 is lowered onto the rice field by the elevating link 5 to move the floats 13 and 14 to the rice field. The seedlings are planted at a substantially constant planting density by the planter 12 while sliding in contact with.

From this normal planting state, when shifting the traveling transmission lever 29 to the high speed side to make the rice transplanter high speed,
When the throttle lever 31 is pulled from the normal state in order to increase the engine output, the traveling speed of the traveling vehicle body 1 becomes faster, and the floats 13 and 14 of the planting device 6 are used when the water depth of the field is deep. The buoyancy causes the planting device to float, and the planting device slides slightly higher than the rice field, so that the planting depth of the seedlings planted by the planting body 12 becomes shallow.

However, in the present invention, the shift lever 2
9, interlocking wires 30 and 40 by operating lever 39
Is pulled and the control arm 27 is turned on via the operation wire 28, the position control device 25 is actuated, and the locking body 20, the operation arm 19, and the rotating arm 17 are operated.
The floats 13 and 14 are pulled up via the
The distance between the holes 7 and the floats 13 and 14 is narrowed, and the planting depth of the seedlings to be planted by the implanting body 12 is deepened to prevent the occurrence of falling seedlings and floating seedlings.

In addition, the shift lever 29 and the throttle lever
If the operation lever 39 is set to a higher number of rotations of the planting device side output pulley 34 while the number 31 is unchanged, the adjustment lever 41
When the plant is operated on the densely planted side, the rotation speed of the implant 12 tends to be high, and the planting state of the seedling tends to be shallow planting. However, in the present invention, the operating wires 28 are simultaneously moved by the interlocking wires 40 and 42. The position control device 25 is operated to raise the floats 13 and 14 so that the planting depth of the seedlings is adjusted to be deep, thereby preventing falling seedlings, floating seedlings and the like.

A shift lever 29, a throttle lever 31,
When the operation lever 39, the adjusting knob 41, etc. are returned to their original positions, the operation of the position control device 25 is released, the operation is returned to the original state, and normal rice transplanting work is performed. The position control device 25 in the above embodiment may be a mechanical device instead of a solenoid, and the device of the present invention is not limited to the riding type rice transplanter of the above embodiment, but may be a walk type rice transplanter. The same can be implemented in.

[0018]

As described above, according to the present invention, the planting device having the float is mounted on the traveling vehicle body, and the traveling vehicle body is provided with the speed adjusting device for adjusting the traveling speed thereof. A planting depth adjusting device that adjusts the planting depth of the seedling by moving the fulcrum up and down is provided, and the planting depth adjusting device includes an operation lever that vertically adjusts the rear pivot of the float and the lever. A locking body that locks at the adjustment position and a position control device that moves the locking body are provided, and when the traveling speed of the machine body is changed by operating the speed adjustment device,
Since the position control device is the planting depth adjusting device of the rice transplanter configured to move the locking body so that the planting depth of the seedling is changed, the locking position of the operating lever to the locking body is changed. The planting depth of seedlings can be artificially adjusted by changing it, and the planting depth of seedlings is automatically adjusted by moving the locking body by the position control device according to the traveling speed of the aircraft. Therefore, highly accurate rice planting work is possible, and even if the planting depth is automatically adjusted, the position of the artificially adjusted operating lever that is locked to the locking body does not change, so operability is good. is there.

[Brief description of drawings]

FIG. 1 is a side view of the entire riding type rice transplanter to which the present invention is applied.

FIG. 2 is a side view and a partial perspective view of a main part of the present invention.

[Explanation of symbols]

 1 Traveling Vehicle 2 Front Wheel 3 Rear Wheel 4 Engine 5 Lifting Link 6 Planting Device 7 Main Frame 8 Seedling Stand 9, 10 Guide Rail 11 Seedling Support Plate 12 Planter 13 Center Float 14 Side Float 15 Depth control device 16 Rotating shaft 17 Rotating arm 18 Bracket 19 Operation arm 20 Locking body 21 Link arm 22 Bell crank 23 Link rod 24 Hydraulic switching valve 25 Position control device 26 Pin 27 Control ― Ruamu 28 Operation wire 29 Travel speed change lever 30, 32, 40, 42 Interlocking wire 31 Throttle lever 33 Output pulley 34 Implantation device input pulley 35, 36 Tension pulley 37, 38 Duffel tension 39 Operation lever 41 Adjustment knob

Claims (1)

[Claims] 1. A planting device having a float is mounted on a traveling vehicle body, a speed adjusting device for adjusting the traveling speed is provided on the traveling vehicle body, and a rear pivotal fulcrum of the float is moved up and down in the planting device to grow seedlings. the planting depth adjustment device for adjusting the planting depth provided, the planting depth adjustment device includes an operating lever which moves up and down adjusting the rear pivot point of the float, a locking for locking the lever to the adjustment position and body, and a position control device for moving the engaging member, changing the running speed of the aircraft by operating the pre-Symbol rate adjusting device, the position control
The locking device moves the locking body so that the planting depth of the seedling is changed.
Planting depth adjustment device of rice transplanters you configure that.