JPH1033030A - Transplanter - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a rice transplanter, capable of automatically lifting a seedling planting apparatus with the backward motion of a body, in excellent handleability by simple constitution. SOLUTION: This transplanter is connected to a seedling planting apparatus to be driven liftably and lowerably based on a traveling body, is equipped with a detector SW1 for outputting signals for the lifting, neutral, lowering, planting clutch engagement, etc., of the planting apparatus by the operation position of a planting part lifting and lowering operation tool. The transplanter is furnished with a means for allowing the rise of the seedling planting apparatus followed by the backward motion operation of a speed change operation tool only when the planting part lifting and lowering operation tool is located at a specific position by taking advantage of the output from the detector SW1.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a rice transplanter in which a seedling plant is connected to a traveling machine so as to be able to drive up and down.

[0002]

2. Description of the Related Art Conventionally, there has been a rice transplanter in which a seedling transplanter is forcibly raised to a maximum ascending position when a main transmission of a traveling body is switched to a reverse position.

[0003]

In the above-described structure, during the planting operation in the field, for example, in order to start planting from a position as close as possible to the ridge, the position of the planting mechanism is adjusted while moving the traveling body backward. When performing the reverse, when the seedling planting device is lowered to a position close to the rice field and moved backward, the seedling planting device may collide with the ridge, so that the seedling planting device is forcibly raised in advance. In this way, damage due to collision with the ridge is prevented beforehand. However,
According to the above-mentioned conventional structure, when the main transmission is switched to the reverse position, the seedling planting device is raised without exception. For example, when trying to store the barn without increasing the vertical height in the barn, If the seedling planting device cannot be stored with the seedling planting device raised to the middle position, and conversely, if the height of the seedling planting device is set to the middle position and it is accidentally operated to the reverse position, the seedling planting device will There is a possibility that adverse effects, such as unexpectedly rising, which may be dangerous, may occur, and there is room for improvement. An object of the present invention is to eliminate the above disadvantages.

[0004]

According to a feature of the present invention, in the rice transplanter described at the beginning, a ground contact state detecting sensor for detecting that the seedling planting apparatus is in a ground contact state, and a transmission for a traveling machine body. When the reverse state detecting means for detecting that the speed change operation has been performed to the reverse position, and when both of the contact state detecting sensor and the reverse state detecting means are in the detecting state, the seedling planting device is driven to rise to a predetermined height. And a rise control means.

[0005]

When the transmission is operated to the reverse position when the seedling planting device is in contact with the ground, that is, when planting is performed in the field, the seedling planting device is forcibly raised only when the transmission is operated to the reverse position. When the vehicle is stopped at the middle position in the vertical direction and the traveling body is moved backward, the seedling planting device does not unexpectedly rise against the intention of the operator.

[0006]

Therefore, while preventing the collision of the seedling planting device with the ridge when the traveling machine body moves backward during the planting operation, it is possible to prevent the seedling planting device from being stuck in a small place such as a barn. Damage to the seedling planting equipment due to collision can also be prevented. As a contact state detection sensor, a rice transplanter of this type is generally provided with a detection tool for detecting the attitude of the seedling planting apparatus or a muddy leveling tool. There is also an advantage that the configuration can be made without complicating.

[0007]

Embodiments will be described below with reference to the drawings. FIG.
Shows a riding rice transplanter. This rice transplanter is configured by connecting a seedling planting device 3 via a parallel quadruple link mechanism 2 to a rear part of a riding type traveling machine body 1 so as to be able to move up and down and roll freely around a longitudinal axis. An engine 4 is mounted on the front of the traveling body 1 and the power of the engine 4 is
The transmission system is configured to transmit to the front and rear wheels 6 and 7 via a planting clutch and to the seedling planting device 3 via a planting clutch (not shown).

[0008] The seedling planting apparatus 3 comprises a seedling stand 9 which reciprocates and moves laterally with a constant stroke with respect to a planting transmission case 8 which also serves as a frame. Rotating case-type planting mechanism 1 to take out and plant in field
0, swing arm type ground sensors 11R and 11L which are disposed on the left and right sides of the lower front position of the planting transmission case 8 and detect a ground height by swinging displacement while following a pair of grounds.
The seedling planting device 3 is driven up and down by driving a lift cylinder 12, and the rear link 2a and the seedling rest 9 of the quadruple link mechanism 2 are provided. Left and right rolling drive is performed by a rolling cylinder 13 horizontally connected between left and right sides.

As shown in FIG. 1, the seedling planting device 3 comprises:
By setting the operation switch SW1 provided on the aircraft control unit 14 to the ascending position, the forcibly ascending to the maximum ascending position,
When set to the neutral position, the state is maintained, and when set to the descending position, it descends to the contact position, and when it is set to the planting position, the contact position is lowered and the planting clutch (not shown) is engaged to operate the planting drive. It is configured to be in a state. or,
The grounding sensors 11R and 11L are configured to detect the vertical swing amount of the swinging arms 15R and 15L that swing while following the ground by potentiometers PM1 and PM2, respectively, to detect the ground height, and the operation switch SW1 When the grounding sensors 11R, 1
Lifting and lowering control means A for driving the lift cylinder 12 to maintain the seedling planting device 3 at a predetermined height so that the average value of the output of 1L matches a predetermined set value, and both sensors 11R and 11L.
Of the rolling cylinder 13 so that the outputs of
And a rolling control means B for maintaining the left and right inclination posture of the seedling planting device 3 at a predetermined posture. That is,
The hydraulic control valves V1 and V2 of the cylinders 12 and 13 are each configured to be electromagnetically driven, and the operation switches SW
1. An output of each of the ground sensors 11R and 11L is input, and a control device 16 for driving and controlling each of the hydraulic control valves V1 and V2 is provided. Each of the control means A and B is provided in the control device 16 in the form of a control program. Can be

[0010] When the seedling planting device 3 is in the ground contact state and the transmission 5 of the traveling machine 1 is operated to the reverse position, the ascending control means C for forcibly raising the seedling planting device 3.
Is provided. More specifically, the shift lever 1 of the transmission 5
A reverse detection switch SW2 (an example of reverse state detection means) for detecting that the switch 7 has been operated to the reverse position is provided. The output of the reverse detection switch SW2 is also supplied to the control device 16. The elevation control means C is provided in the control device 16 in the form of a control program, and the control device 16 performs control as follows.

That is, as shown in FIG. 2, it is first determined whether or not the reverse detection switch SW2 has detected the reverse state (step S1). When the detection state is maintained (steps S2 and S3), it is determined from the output level of either of the two ground sensors 11R and 11L whether the planting apparatus 3 is in the ground state (step S4). If it is determined that the plant is in the ground contact state, it is then determined whether or not the operation switch SW1 is at the planting position (step S5). 3 is raised to the maximum raising position (step S6).

In the claims, reference numerals are provided to facilitate comparison with the drawings, but the present invention is not limited to the configuration shown in the attached drawings.

[Brief description of the drawings]

FIG. 1 is a control block diagram.

FIG. 2 is a control flowchart.

FIG. 3 is an overall side view of the rice transplanter.

[Explanation of symbols]

 REFERENCE SIGNS LIST 1 traveling body 3 seedling planting device 5 transmission 11R, 11L ground contact detection sensor C ascending control means SW2 reverse movement detection means

Claims (2)

[Claims] 1. A transplanter in which a seedling planting device is connected to a traveling vehicle body so as to be able to be driven up and down freely.
A detector that outputs a signal indicating that the planting section is in neutral / down, and that the planting clutch is engaged, etc., is provided. A transplanter having means for allowing the seedling planting device to move up with the backward operation of the tool. 2. A method according to claim 1, further comprising: a ground contact state detecting sensor for detecting that the seedling planting apparatus is in a ground contact state, wherein when the ground contact state detecting sensor detects a ground contact state, the raising of the seedling planting apparatus is permitted. Item 10. The transplanter according to Item 1.