JPH11332330A - Sulky rice transplanter - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a sulky rice transplanter capable of surely and readily carrying out the rolling adjustment of a seedling planting apparatus. SOLUTION: This sulky rice transplanter is made to liftably connect a seedling planting apparatus 7 through a lifting and lowering link mechanism 6 to the rear of a sulky traveling main body 4, to connect the seedling planting apparatus 7 to the lifting and lowering link mechanism 6 in a freely rolling way and to control the rolling of the seedling planting apparatus 7 based on the detected result of an inclination sensor 35. In this case, an operation unit 36 for adjusting the rolling is installed behind an operator seat 3 laid at the back of the sulky traveling main body 4.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a method for connecting a seedling planting device to a rear part of a riding traveling body via a lifting link mechanism so as to be able to move up and down, and connecting the seedling planting device to the lifting link mechanism so as to be able to roll. The present invention also relates to a riding rice transplanter configured to perform rolling control on the seedling planting device based on a detection result of a tilt sensor.

[0002]

2. Description of the Related Art In general, a riding rice transplanter configured to control the rolling of a seedling planting device is provided with an operation unit for setting the rolling posture of the seedling planting device and adjusting and fixing the rolling position arbitrarily. Was equipped on the side of the driver's seat.

[0003]

When operating the operation unit for rolling adjustment, the driver operates the operation unit beside the driver's seat while turning his / her body backward to see the seedling planting device. In other words, the operation of the switches and dials of the operation unit is difficult to perform, and erroneous operations may occur due to operation without looking at these switches.

The present invention has been made in view of such a point, and it is a main object of the present invention to make it possible to easily and easily perform a rolling adjustment of a seedling planting apparatus.

[0005]

Means for Solving the Problems [Structure, operation and effect of the invention according to claim 1]

(Structure) According to the first aspect of the present invention, a seedling planting device is connected to a rear portion of a riding body via a lifting link mechanism so as to be movable up and down, and the seedling planting device is rolled with respect to the lifting link mechanism. In a riding rice transplanter that is freely connected and configured to control the rolling of the seedling planting device based on a detection result of a tilt sensor, an operation unit for rolling adjustment is provided behind a driver seat provided at a rear part of the riding traveling body. It is characterized by having been done.

(Operation) According to the above configuration, when performing the rolling adjustment operation, the driver can perform the adjustment operation by looking at the seedling planting apparatus and the operation unit in the backward posture.

(Effects) Therefore, according to the first aspect of the present invention, the seedling planting apparatus and the operation unit can be viewed in the same posture, so that the operation unit is located at the side of the driver's seat. The rolling adjustment operation can be performed easily and accurately without any mistakes.

[Structure, operation and effect of the invention according to claim 2]

(Structure) According to a second aspect of the present invention, in the first aspect of the invention, the operation unit is provided above a rolling fulcrum member provided at a rear end of the lifting link mechanism.

(Operation / Effect) According to the above configuration, the operation unit can be arranged at a high position without rolling operation, and the adjustment operation facing rearward can be easily performed.

[Structure, operation and effect of the invention according to claim 3]

(Structure) According to a third aspect of the present invention, in the first aspect of the present invention, a drive unit for rolling control is provided at a rear portion of the elevating link mechanism, and the operating unit is provided near the drive unit. Has been deployed.

(Operation / Effect) According to the above configuration, the wiring connection distance between the two units is short, and the occurrence of a disconnection accident or the like can be suppressed and the safety can be improved.

[Structure, operation and effect of the invention according to claim 4]

(Structure) According to a fourth aspect of the present invention, in the third aspect of the present invention, the driving unit and the rolling operation unit are integrated.

(Operation / Effect) According to the above configuration, both units can be electrically connected without exposing the wiring, so that disconnection or short-circuit accident due to contact with other objects can be eliminated, and further safety can be achieved. It will be excellent in property. Also, since it can be handled as an integrated unit, the workability of assembling it to the body is excellent.

[0018]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS FIG. 1 shows an overall side view of a riding rice transplanter. This riding rice transplanter includes a front four wheels 1 and a rear wheel 2 and a parallel quadruple driven by a hydraulic cylinder 5 at the rear of a four-wheel drive type riding traveling body 4 having a driver seat 3 at the rear. An elevating link mechanism 6 having a link structure is provided, and a four-row planting planting device 7 is connected to the rear end of the elevating link mechanism 6.

The seedling planting device 7 comprises a seedling stand 8 on which four rows of seedlings are placed and which are reciprocated and moved in a fixed stroke.
A four-row rotary planting mechanism 9 for cutting and planting seedlings one by one from the lower end of the seedling stand 8 and planting them in the field scene, and three leveling floats 10 arranged in parallel to level each planting surface. It has.

A square pipe-shaped main frame 11 is laid horizontally below the seedling planting device 7, and columns 12 are erected from both right and left ends thereof. A slider 13 provided at the upper end of the column 12 is provided with a slider 13. The seedling rest 8 is slidably engaged with a reinforcing stay 14 laid horizontally on the upper rear surface of the seedling rest 8, so that the load of the laterally moving seedling rest 8 is received and supported by the left and right columns 12. .

Although the detailed structure is omitted because of the well-known configuration, the center leveling float 10 (S) of the three leveling floats 10 arranged in parallel is irrespective of the ups and downs and the front-back inclination of the riding body. It is used as a float sensor for performing elevation control for maintaining the seedling planting device 7 at a predetermined height with respect to the field scene T, and the float sensor 10 (S) is moved around the rear fulcrum a due to fluctuations in the contact pressure. When the vertical swing displacement is performed, the displacement is transmitted to the control valve of the hydraulic cylinder 5 via a wire, and the float sensor 10 (S)
The seedling planting device 7 is configured to move up and down in the same direction as the vertical displacement direction of the plant. For example, when the seedling planting apparatus 7 sinks in the field scene, the float sensor 10 (S) swings upward and the hydraulic cylinder 5 is shortened so as to raise the lifting link mechanism 6. Seedling planting device 7
Floats from the field scene and float sensor 10 (S)
Is pivotally displaced downward, and the hydraulic cylinder 5 is driven to extend so as to lower the lifting link mechanism 6, whereby the seedling planting apparatus 7 is always maintained at a predetermined height with respect to the field scene T. I have.

The elevating link mechanism 6 comprises an upper link 21 and a lower link 22 whose front ends are pivotally connected to the fuselage side, respectively, and a vertical link 23 which pivotally connects these rear ends together. The seedling planting device 7 is supported by a boss 24 connected to the lower end of the vertical link 23 so as to freely roll around a fulcrum P. A bracket 2 is provided on the upper part of the vertical link 23 so as to be substantially parallel to the seedling rest 8.
5 is extended upward, and a drive unit 26 for controlling the rolling of the seedling planting device 7 is attached to an upper end thereof.

As shown in FIG. 2, the driving unit 26
Is composed of an electric motor 27, a horizontal screw shaft 28 driven to rotate forward and reverse by the electric motor 27, and a movable body 29 which is moved by screwing left and right with the forward and reverse rotation of the screw shaft 28. Both ends of the reinforcing stay 14 provided on the back surface of the base 8 and the movable body 29 are connected via a pair of left and right springs 30. When the movable body 29 is moved by screwing to the left and right, the whole seedling planting device 7 is pulled to the left and right via the spring 30 and rolls around the fulcrum P. In addition, the periphery of the electric motor 27 and the screw shaft 28 is covered with cover cases 31 and 32.

A feed shaft 46 having a reciprocating spiral groove protrudes from a side surface of the planting feed case 45 connected to the main frame 11, and reciprocates with the rotation of the feed shaft 46 in a certain direction. The movable member 47 is connected to the rear surface of the seedling rest 8 so that the seedling rest 8 is reciprocated and laterally moved with a constant stroke.
The lateral movement of the seedling placement device 7 causes the right and left weight balance around the fulcrum P to collapse, and the seedling placement device 7 tends to tilt toward the seedling rest moving direction. The spring 30 on the opposite side is extended,
The pulling-back action by the elastic tensile force of the spring 30 corrects the collapse of the right and left weight balance of the seedling planting device 7 and suppresses the unjust right and left rolling due to the lateral movement of the seedling mounting 8.

An inclination sensor 35 is provided on one of the columns 12 for electrically detecting left and right inclination continuously, and rolling control for operating the drive unit 26 is performed based on the detection result of the inclination sensor 35. It has become.

That is, when the seedling planting apparatus 7 is in a substantially horizontal state, the detection result of the inclination sensor 35 is within the reference angle range including the horizontal state. At this time, the drive unit 26 is stopped. When the riding plant 4 inclines beyond the reference angle range to the left or right due to the inclination of the riding machine 4 to the left or right due to unevenness or undulation of the cultivator, this is detected by the inclination sensor 35, and the reference angle is detected. The drive unit 26 is actuated forward or reverse to return within the range.

An operation unit 36 for rolling adjustment is provided at a corner formed by the electric motor 27 of the drive unit 26 and the shaft portion of the screw feed mechanism.
The operation unit 36 is installed with its operation surface facing forward, and has three button switches 3 on its operation surface.
7, 38 and 39 are provided. Here, the center button switch 37 is for automatic rolling control activation, and the left and right button switches 38 and 39 are for artificial setting, respectively.
When the center button switch 37 is pressed, the automatic rolling control mode is set, and the seedling planting apparatus 7 is automatically controlled as described above based on the detection result of the inclination sensor 35, and is maintained in the horizontal horizontal position. When one of the right and left button switches 38 and 39 is pressed,
At that time, the mode becomes the manual rolling adjustment mode, the drive unit 26 is forcibly operated in the forward or reverse direction only while the button switch 38 or the button switch 39 is pressed, and the seedling planting apparatus 7 is tilted left or right, When the pushing operation is released, the drive unit 26 stops, and the seedling planting apparatus 7 is held in the inclined posture at that time. When the center button switch 37 is pressed, the automatic rolling control mode is set again.

A cover 40 is provided on the operation surface of the operation unit 36 so as to be able to swing and open in order to prevent the button switches 37, 38 and 39 from being carelessly operated. The drive unit 26 and the operation unit 3
6 are integrated and connected to each other by internal wiring. As shown in FIG. 4, the power source of the riding traveling machine body 4 and the inclination sensor 35 of the seedling planting device 7 are connected to the operation unit 3.
6 is connected to a control device 41 built in the device 6 by external wiring.

[Alternative Embodiment] The present invention can be implemented in the following modes. The drive unit 26 and the operation unit 36 may be formed as separate structures, attached to the bracket 25 close to each other, and connected to each other by short external wiring. The vertical displacement of the central sensor float 10 (S) is detected by an electric sensor such as a potentiometer,
The present invention can also be applied to a model in which the control valve of the hydraulic cylinder 5 that drives the lifting link mechanism 6 is an electromagnetic control valve, and the automatic raising and lowering control of the seedling planting device 7 is configured to be performed electrically. An automatic rolling control may be performed by providing a tilt sensor 35 for performing the rolling control on the side of the riding traveling machine body 4 and correcting the inclination of the seedling planting device 7 by an angle corresponding to the machine body inclination angle. The operation unit 36 may include a setting device such as a dial for arbitrarily adjusting and setting a reference angle serving as a control target in the automatic rolling control mode.

[Brief description of the drawings]

FIG. 1 is an overall side view of a riding rice transplanter.

FIG. 2 is a front view of a seedling mounting table viewed from the front of the fuselage.

FIG. 3 is a perspective view showing a driving unit and an operation unit for rolling.

FIG. 4 is a block diagram showing a schematic configuration of a drive unit and an operation unit for performing a rolling operation of the seedling planting apparatus.

[Explanation of symbols]

 Reference Signs List 3 Driver's seat 4 Passenger traveling machine 6 Lifting link mechanism 7 Seedling planting device 26 Drive unit 35 Tilt sensor 36 Operation unit

Claims (4)

[Claims] 1. A seedling planting device is connected to a rear portion of a riding traveling body via a lifting link mechanism so as to be able to move up and down, and the seedling planting device is connected to the lifting link mechanism so as to be able to roll freely. A riding rice transplanter configured to control the rolling of the seedling planting device based on the result, wherein an operating unit for rolling adjustment is provided behind a driver seat provided at a rear part of the riding traveling body. Rice transplanter. 2. The rice transplanter according to claim 1, wherein the operation unit is disposed above a rolling fulcrum member provided at a rear end of the lifting link mechanism. 3. The riding rice transplanter according to claim 1, wherein a drive unit for rolling control is provided at a rear portion of the lifting link mechanism, and the operation unit is provided near the drive unit. 4. The riding rice transplanter according to claim 3, wherein said drive unit and said rolling operation unit are integrated.