JPH11155320A - Sulky type rice transplanter - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a sulky type rice transplanter for reducing the labor for rice transplanting by installing a previous step working machine such as a working machine for a non-tilled field and the working machine for not puddled field, on the more front side of a transplanting device in the sulky type rice transplanter. constituted so that highly accurate transplanting operation may be carried out by regulating the sensitivity of a pitching operation and the sensitivity of a rolling operation of the transplanting machine when the previous step working machine is installed. SOLUTION: This sulky type rice transplanter having working machines A and B for carrying out previous steps of transplanting such as a tilling operation and a puddling operation on the field for transplanting seedlings by a transplanting machine 20, installed in the front part of the sulky type transplanting machine 20 and constituted so that the operation conditions may be controlled so as to be changed into a not-operating state, a deep operation state and a shallow operation state, has a controlling and correcting structure for automatically correcting an operation sensitivity such as the sensitivity of a pitching control and the sensitivity of a rolling control by the transplanting machine 20 on the main body side when controlling the change.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a riding type rice transplanter, and more particularly to a riding type rice transplanter equipped with a pre-planting operation device for cultivating or substituting in a pre-planting process portion by a rice transplanting device. It is related.

[0002]

2. Description of the Related Art Conventionally, a non-tilling rice transplanter disclosed in Japanese Utility Model Laid-Open No. 4-68615 and Japanese Unexamined Patent Publication No.
Although a non-generation rice paddy planting machine such as -000007 is well known, the current situation is that correction of seedling planting sensitivity on the rice transplanting machine side has not been made. Generally, a riding type rice transplanter has a rice transplanting device mounted on a rear part of a riding traveling vehicle body via an elevating mechanism or a rolling mechanism. The lifting and lowering or rolling control of these rice transplanting apparatuses is subjected to vertical control or rolling control correction in accordance with the state of the paddy field. Anyway,
In recent years, a non-tilling work process of excavating only the seedling planting area in the field and planting seedlings in front of this rice planting machine, or a rice transplanter that stirs the surface of the paddy field and performs all-round scratching work recently occurred However, in this case, if the operation is performed while keeping the raising and lowering control and the rolling control of the rice transplanting machine unchanged, there is a disadvantage that the rice transplanting operation accuracy is reduced.

[0003]

The present invention employs the following technical means in order to solve the above-mentioned problems. In other words, pre-planting operation devices A and B are provided in front of the riding type rice transplanting device 20 for plowing and substituting the seedling planting field by the rice transplanting device 20. In a configuration in which the working state by A and B can be changed and adjusted to non-working, deep work or shallow work, the pitching control sensitivity or the rolling control sensitivity of the work by the rice transplanter 20 on the main body side at the time of these change adjustments. This is a riding type rice transplanter equipped with a control correction mechanism that automatically corrects work sensitivity.

[0004]

DESCRIPTION OF THE PREFERRED EMBODIMENTS One embodiment of the present invention will be described in detail. 1 is a traveling body of a riding type rice transplanter,
An engine 5 is mounted on a machine frame 4 having a pair of steerable and driven left and right front wheels 2, 2 and a pair of left and right driven rear wheels 3, 3, at an intermediate position between front and rear. A steering frame 6 is provided on the front end side of the steering frame 4, and a steering handle 7 for steering the front wheels 2, 2 is provided above the steering frame 6.
A boarding floor 8 extending left, right, front and rear is stretched on the upper surface of the vehicle. The engine 5 is covered with an engine cover 9 bulging from the floor 8, and a control seat 10 is provided above the engine cover 9. . Reference numeral 11 denotes a rear wheel cover. 12 is a front transmission case, and 13 is a rear transmission case.

[0005] Reference numeral 14 denotes a column, which stands on the rear end side of the machine frame 4. Reference numeral 15 denotes an elevating link mechanism,
a and the base side of the lower link rod 16b is pivotally connected to the column 14 via a bracket so as to be rotatable about a horizontal axis, and the rear end side of the upper and lower link rods is pivotally connected to the vertical link rod 16c. A hitch body 17 for attaching a working machine is attached to the vertical link rod 16c. The lower link rod 16b is connected to a piston 18b of a hydraulic cylinder device 18 having a base portion pivotally connected to the machine frame 4 side, and the lifting link mechanism 15 is operated by the in / out operation of the piston 18b. 1
8a shows the cylinder-body side of the hydraulic cylinder device 18.

The hitch body 17 has a shape of a triangle when viewed from the side. The base end of the hitch body 17 is fixed to the vertical link rod 16c.
Are mounted to be able to swing from side to side. Although the configuration of the rice transplanting apparatus 20 is a known technique, it will be briefly described. The frame is shared by the planting transmission case, and the planting transmission case 21
Is composed of a vertical transmission case 21c which branches out and extends rearward from a left-right central case 21a on the front end side via a horizontal shaft case 21b projecting in the left-right direction. A plurality of seedling mounting tables 22 are arranged on the upper side of the cloth 21 by being divided by left and right partition frames 23. The seedling mounting table 22 is inclined back and forth so that the front is higher, and a seedling carrying wide belt 24 is provided by notching the bottom of each seedling mounting table. The front support frame 25 and the seedling receiving frame 2 at the rear have a gate-shaped front view from the
6 so as to be movable left and right. The seedling mounting table 22 is configured to be moved left and right by a left and right lateral movement mechanism in the left and right central case 21a, and to be reciprocally moved laterally left and right by being connected to a movement shaft partially projecting out of the case. Have been. Further, the belt 24 is structured to be operated by a rotating arm operated by a rotating mechanism in the transmission case 21a so as to be driven when it is moved to the left and right lateral ends.

The seedling receiving frame 26 is L-shaped when viewed from the side. The seedling receiving frame 26 is fixed to the planting transmission case 21 so as to oppose the rear lower end of the seedling mounting table 22, and is arranged in the left-right direction. The seedling receiving frame 26 is formed with cutouts 27 at predetermined intervals. Numeral 28 is a seedling planting device, which is provided with a rotating case 29 on the rear side surface of the vertical transmission case 21c, and swings the planting tool 30 having the seedling separating and planting claws 30a on the rotating case 29. The case 2 is mounted so that it can be turned.
In response to the rotation of 9, the planting tool 30 is operated, and the planting claws 30a intervene in the seedling dividing port 27 of the seedling receiving frame 26 to divide and hold the seedlings and plant the seedlings in the lower paddy field scene. I have.

Reference numeral 31 denotes a leveling float, which is attached to the lower side of the vertical transmission case 21c so that the front side can move up and down, and comprises a center float 31a and side floats 31b, 31b. In each of these floats, a seedling planting scene is prepared, and seedlings are planted in that part. Next, the pitching mechanism and the rolling mechanism of the rice transplanting apparatus 20 will be described. First, the pitching mechanism is mounted on the rear part of the traveling vehicle body 1 via the lifting link mechanism 15.
During the rice transplanting operation, the depth of the paddy field fluctuates, so that the contact pressure (including the vertical movement of the front side of the float 31) applied to the leveling float 31 of the rice transplanter is detected by the contact pressure detector ( A signal from a detector (including upper and lower detectors) 32 is transmitted to a control unit (CPU), whereby the electromagnetic hydraulic switching valve 3
3 is appropriately switched to operate the hydraulic cylinder device 18 to move the rice transplanter 20 through the elevating link mechanism 15 to the leveling float 3
This is a mechanism for controlling the contact pressure applied to 1 to fall within an appropriate working range. The sensitivity correction of this pitching control is
Although there are various means, it is also possible to correct the operating resistance of the ground pressure detector 32 and a means for appropriately restricting the flow of the hydraulic oil to the hydraulic cylinder-device 18 side by a throttle valve or the like,
In the known technique, means for changing the resistance value of the float 31 on the upper movement side is employed.

Next, the rolling mechanism will be described. The rice transplanting apparatus 20 is mounted via a rolling shaft 19 at the rear of the hitch body 17 having a ┓ shape in side view. The piston 34 of the electric cylinder 34 in which the portal frame 25 reciprocates from the hitch frame 17 side to the left and right.
a and the coil spring 35 which goes to the left and right,
The rice transplanting device 20 is forcibly rolled by the left-right reciprocating operation of the electric cylinder 34. In this control, when the traveling vehicle body 1 leans to the left and right, a detection signal of an example of the tilt detector 36 for detecting a difference between the vertical heights of the side floats 31a and 31b is transmitted to a control unit (CPU). Then, according to this signal, the rice transplanting device 20
Is configured to control the amount of left-right tilt of the camera. The sensitivity correction of this rolling control is usually performed by the electric cylinder-34.
The operation speed is changed. In this case, it is simple to change the speed of the motor that drives the electric cylinder 34. Further, the tension of the coil spring 35 for rolling control may be changed.

In the riding type rice transplanter provided with such a control mechanism, a non-tilling work machine A and a non-plowing work machine B are interchangeably mounted on the hitch frame 17 so that they can be mounted. As described above, the no-tillage machine A has a narrow left and right plowing groove only at the seedling planting portion in order to perform the rice transplanting operation without any or almost no plowing after the rice harvesting operation. When the non-tilling work machine A is mounted on the hitch frame 17, a signal is transmitted to the control unit (CPU) automatically or by operating the switch SW1. And the control of the rolling mechanism is insensitive so as to be insensitive. That is, when the work is carried out with the no-tillage work machine A, the pitching control or the rolling control becomes dull, and natural pitching and rolling along the field scene are performed in a state where the control is hardly performed. It is designed to ensure reliable rice transplanting.

The non-scraping machine B performs a special scraping operation so as to evenly work the surface of the field before the ordinary rice transplanting operation. The frame 17 is provided with a non-removable scraper B. When the non-repellent scraper B is mounted on the hitch frame 17, the control unit (CPU) is automatically or operated by the switch SW2.
And the control of the pitching mechanism or the control of the rolling mechanism is made interlocked by this signal. That is, when the work is carried out with the non-scratching working machine B, the pitching control or the rolling control becomes sharp, and the pitching or the rolling is performed even when the seedling planting field is extremely soft. It is designed to ensure reliable rice transplanting.

When attaching the no-tillage working machine A and the non-scraping work machine B, which are the pre-process work devices, the upper and lower link rods extending forward from the portal support frame 25 side of the rice transplanter 20 side. A transmission case 50 is provided. Further, the control for correcting the control sensitivity is incorporated in the control unit, and the up-and-down adjustment mechanism of the working machine by the non-tilling work machine A or the non-plowing work machine B is operated by the input signal from the switch SW3.
The lifting / lowering cylinder 37 is adapted to be adjustable via upper and lower link rods U and D, and the sensitivity of pitching control or rolling control is changed in accordance with the adjustment of the vertical depth. ing. That is, the sensitivity is adjusted to the slightly sensitive side at the time of shallow work by the no-tillage work machine A, to the insensitive side at the time of deep work, to the considerably sensitive side at the time of deep work by the non-tillage work machine B, and to the insensitive side at the time of shallow work. It has become so.

[0013] It is to be noted that the control is slightly related to another embodiment. The detection for detecting the accumulation of foreign matters such as straw waste and weeds scattered on the surface of the field near the front side of the leveling float 31 is described. A detector 38 is provided, and when the detector 38 detects a foreign substance equal to or larger than a predetermined value, the rolling control is changed to the insensitive side. In the case of the no-tillage work machine A, the detector 38
If it is detected that foreign matter has accumulated more than a predetermined amount, it is convenient to operate the no-tillage work machine A upward or to control the work speed to be slow. Also,
In the case of performing rice transplanting work, when the headland work lever 39 configured to perform headland leveling work that performs only leveling without seedling planting work around the field is equipped at the final stage of the work, When selecting an operation, it is also possible to automatically lower the non-scratching work machine B to control the operation to a sufficient leveling operation.

[0014]

According to the present invention, when a non-tilling work machine or a non-plowing work machine is mounted in a pre-process of a seedling planting section by a rice planting apparatus, these works are reduced in labor saving. This has the effect of automatically changing and controlling the pitching control and the rolling control of the rice transplanter with high precision when performing simultaneous operations.

[Brief description of the drawings]

FIG. 1 is a side view

FIG. 2 is a plan view

FIG. 3 is a side view

FIG. 4 is a plan view of a main part.

FIG. 5 is a control circuit diagram.

FIG. 6 is a control circuit diagram of a main part of another example.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 Riding type traveling device 20 Rice transplanting device A Pre-process work device (no-tillage work machine) B Pre-process work device (non-scratch work device)

Claims (3)

[Claims] 1. A pre-planting operation device A, B for cultivating and substituting a seedling planting field by the rice transplanting device 20 is provided in front of the riding type rice transplanting device 20. In the configuration in which the working state by the process working devices A and B is configured to be changeable to non-working, deep working or shallow working,
A riding type rice transplanter provided with a control correction mechanism for automatically correcting operation sensitivity such as pitching control sensitivity or rolling control sensitivity of the operation by the rice transplanter 20 on the main body side at the time of these change adjustments. 2. The riding rice transplanter according to claim 1, wherein the control sensitivity is corrected to the insensitive side in the plowing operation state. 3. The riding type rice transplanter according to claim 1, wherein the control sensitivity is corrected to the sensitive side in the scraping operation state.