JP2002165506A - Seedling transplanter - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a seedling transplanter designed to efficiently feed seedlings onto a seedling tray from a position by the side of a machine body such as a levee. SOLUTION: This seedling transplanter has such a construction as to have a seedling conveying means 10 for conveying seedlings from a position by the side of a machine body to the vicinity of a seedling tray and a seedling feed means 11 for feeding seedlings conveyed to the vicinity of the seedling tray onto it; wherein the means 10 is designed to intermittently convey seedlings by a specified distance each and also to arrange the seedlings in parallel to each other in the direction of conveying them with partitions 10a at the respective boundaries between their positions, and the seedling feed means 11 is designed to inclined seedlings conveyed close to the seedling tray so that the seedling tray side lies lower and, in the inclined condition, vibrate the seedlings and slidingly feed them onto the seedling tray.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a seedling transplanter capable of supplying seedlings to a seedling mounting table from a lateral position of the machine such as a ridge.

[0002]

2. Description of the Related Art Generally, when transplanting seedlings with a rice transplanter, seedlings for replenishment are prepared on ridges. Is stopped at the ridge to supply seedlings. In the conventional seedling transplanter, when replenishing the seedlings, the worker goes down from the machine and raises the seedlings on the ridge once on the floor of the machine, and then the worker himself rises on the floor and the seedlings on the floor are placed on the seedling table. Had been replenished.

[0003]

As described above, in the past, the worker had to perform two seedling handling operations at the time of replenishing seedlings, so that the work efficiency was poor and the physical burden on the worker was reduced. It was big. Therefore, it is an object of the present invention to be able to efficiently supply seedlings to a seedling mounting table from a position such as a ridge on a side of the machine body.

[0004]

Means for Solving the Problems In order to solve the above problems, the following inventions have been made. First, a seedling transplanter according to a first aspect of the present invention provides a seedling transfer means for transferring seedlings from a lateral position of the body to a position near a seedling table, and supplies the seedlings transferred to a position near the seedling table to the seedling table. Seedling supply means, wherein the seedling transfer means intermittently transfers seedlings at a predetermined distance.

Next, a seedling transplanter according to a second aspect of the present invention provides a seedling transfer means for transferring seedlings from a lateral position of the machine to a position near a seedling table, and a method for transferring seedlings transferred to a position near the seedling table. Seedling supply means for supplying the seedlings to the mounting table, the seedling transfer means, so that the seedlings are placed in parallel in the seedling transfer direction, a partition is provided at the boundary of each seedling placement position, It is characterized by having.

A seedling transplanter according to a third aspect of the present invention is a seedling transfer means for transferring seedlings from a lateral position of the machine to a position near a seedling table, and a method for transferring seedlings transferred to a position near the seedling table. Seedling supply means for supplying the seedlings to the stand, wherein the seedling supply means tilts the seedlings conveyed to the vicinity of the seedling table so that the seedling table side is at a lower position, and vibrates the seedlings in the inclined state. Giving,
It is characterized in that it is slid into the seedling table and supplied.

In order to supply seedlings to the seedling transplanter according to each of the inventions, an operator supplies seedlings to the seedling transfer means at lateral positions of the machine such as ridges. Then, the seedling transfer means transfers the seedling to the vicinity of the seedling mounting table, and the seedling supply means supplies the seedling to the seedling mounting table. Therefore, the worker only needs to perform the work for supplying the seedlings once.

[0008] In particular, according to the structure of the first aspect, the seedlings to be replenished at the side positions of the machine can be conveyed to the vicinity of the seedling mounting table in a state where a predetermined number of the seedlings are arranged at a constant pitch. For this reason, in a multiple-row seedling transplanter, it is possible to simultaneously supply seedlings to each strip portion of the seedling mounting table, and the efficiency of seedling supply work is improved.

In the second aspect of the present invention, if the intervals between the partitions are set appropriately, the seedlings to be replenished at the lateral positions of the body can be moved to positions corresponding to the strips of the seedling mounting table. Can be transported. For this reason, seedling supply to the seedling mounting table by the seedling supply means can be performed accurately.

Further, according to the third aspect of the invention, the seedlings conveyed to the vicinity of the seedling mounting table can be supplied to the seedling mounting table without difficulty and stably.

[0011]

Embodiments of the present invention will be described below with reference to the drawings. 1 and 2 show a riding rice transplanter which is a kind of a seedling transplanter. In the riding rice transplanter 1, a six-row seedling planting section 4 is connected to the rear of a four-wheel traveling vehicle body 2 via a lifting link device 3 so as to be able to move up and down. A seedling replenishing unit 5 for supplying seedlings to the seedling mounting table 4a of the seedling planting unit 4 is provided above a rear portion of the traveling vehicle body 2.

3 to 5 show a seedling supply section. The seedling supply unit 5 combines seedling transfer means for transferring seedlings from the lateral position of the machine to the vicinity of the seedling table, and seedling supply means for supplying the seedlings conveyed to the vicinity of the seedling table to the seedling table. A transport belt 10 as the seedling transporting means and a seedling supplying means as a seedling transporting means are mounted on a vertically long lifting frame 9 supported vertically by a pantograph-type lift mechanism 8 driven by a lift cylinder 7. A pair of left and right seedling supply cylinders 11,
11 etc. are assembled.

The conveyor belt 10 has a pair of pulleys 13A and 13B, which are rotatably supported at the left and right ends of the lifting frame 9 and extend in the front-rear direction. It is slidably supported. In a region (upper surface in the figure) of about half of the outer peripheral surface of the conveyor belt 10, a lug 10a is formed as a partition indicating the boundary of the seedling mounting position at a pitch corresponding to the width of each strip of the seedling mounting table. I have. The right pulley 13A as a drive pulley is driven by a motor 15 rotatable in both forward and reverse directions.
The transport belt 10 is operable in either a direction in which the upper portion moves to the left or a direction in which the upper portion moves to the left. The left pulley 13B, which is a driven pulley, is slidably attached to the lifting frame 9 via a telescopic rod 16 in the left-right direction. Therefore, when the transport belt 10 expands or contracts, the tension of the transport belt 10 can be adjusted.

The support plate 14 is provided with pulleys 13A, 1
It is provided at a position slightly higher than the upper end of 3B, and the left and right ends of the upper surface of the transport belt 10 are slightly inclined downward. Further, outside the left and right ends of the conveyor belt 10, the seedling guide 18 is slightly higher than the left and right ends of the belt.
Is fixedly provided. Further, at the stop position of the conveyor belt 10 at the time of supplying the seedlings, the outermost lugs 10a are lower than the upper surface of the belt. from these things,
The mat-shaped seedlings M placed on the seedling collecting plate 19 can be easily supplied to the left and right ends of the conveyor belt 10.

The seedling collecting plate 19 is a tool used for taking out a mat-like seedling from the seedling box. As shown in FIG. 8, the seedling collecting plate for the present seedling transplanter has a flat seedling mounting portion 19a. Is formed with an inverted U-shaped guide portion 19b at one end in the longitudinal direction. When replenishing the seedlings, the seedling picking plate 19 on which the seedlings are placed is placed on the conveyor belt 10 with the guide portions 19b fitted on the guide rails 20 provided on the front side of the conveyor belt 10. With the operation of the transport belt 10, the seedling collecting plate 19 on which the seedlings are placed is transported while being guided by the guide rails 20. Since the left and right end portions of the guide rail 20 are formed in an arc shape in rear view, the guide portion 19b of the seedling collecting plate can be easily fitted to the guide rail 20 from the side.

The guide rail 20 is rotatably mounted on a left-right rotating shaft 22 provided at the outer end of the lifting frame 9. A piston rod of a seedling supply cylinder 11 having a base pivotally connected to the elevating frame 9 is connected to a seedling supply arm 23 that rotates integrally with the rotation shaft 22. When the seedling supply cylinder 11 is contracted, the guide rail 20 rotates upward about the rotation shaft 22 as a fulcrum.

The operation of the seedling supply section is controlled by the control device 30 based on information from the following switches and sensors (see FIG. 7). Row seedling supply switch 31 (L,
R) is a push-button switch operated when starting the seedling supply operation. Seedling supply switch 32 (L, R,
F) is a push button switch operated when supplying the seedlings conveyed in the vicinity of the seedling mounting table to the seedling mounting table. The ridge seedling supply switch 31 and the seedling supply switch 32 are connected to the control panel 3 attached to the left and right end surfaces of the lifting frame 9.
3 respectively. Seedling supply switch 3
2 is also provided on the operation panel 2b near the cockpit 2a.

The seedling supply detection switches 35 (L, R) detect that seedlings have been placed on the left and right ends of the conveyor belt 10. The rotary encoder 36 detects the operation amount of the conveyor belt 10 from the rotation amount of the right pulley 13A. The belt center detection switch 37 detects that the center (belt center) of the region where the lug of the transport belt 10 is located is located at the left and right centers of the machine.

The lift sensor 39 detects the amount of lift of the lift frame 9 by the lift mechanism 8. The seedling supply arm switch 40 (1, 2) is a switch that determines the rotation range of the seedling supply arm. The seedling table horizontal position sensor 41 is connected to the seedling planting section 4.
Where the seedling mounting table 4a is located in the left-right reciprocating stroke. The lifting link sensor 42 is connected to the lifting link device 3.
The height of the seedling planting part 4 is detected from the link angle.

When replenishing seedlings, the machine is laid sideways on the ridge on which the seedlings for replenishment are placed. Then, when the ridge seedling replenishment switch 31 on the ridge side is pressed, the belt center at the end of the previous replenishment work is shifted from the state in which the center of the belt is at the center of the right and left sides of the machine.
The upper part of 0 moves to the ridge side by 6 lag pitches and returns to the initial position. When the empty seedling collecting plate 19 at the time of the previous replenishment is placed on the conveyor belt 10, the seedling collecting plate 19 is manually collected when the returning operation of the conveyor belt 10 is performed.

The seedlings are replenished together with the seedling removing plate 19 to the end on the ridge side of the conveyor belt 10 that has returned to the initial position, in the manner described above. Then, by the seedling supply detection switch 35 sensing,
The motor 15 rotates in a predetermined direction, and the upper part of the conveyor belt 10 moves to the side opposite to the ridge. When the belt moving distance based on the detection result of the rotary encoder 36 becomes one lag pitch, the operation of the transport belt 10 stops. Hereinafter, similarly, the supply of the seedlings to the transport belt 10 and the operation of the transport belt 10 are repeated. When the operation of the conveyor belt 10 on which the sixth seedling is placed is stopped, the operation is stopped not when the belt is moved based on the detection result of the rotary encoder 36 but when the belt center detection switch 37 detects the center of the belt. In this way, even if there is an error between the belt moving distance based on the detection result of the rotary encoder 36 and the actual moving distance due to slippage between the belt and the pulley, the error is accumulated and does not increase.

When the six seedlings have been transported to the vicinity of the seedling mounting table, the seedling supply switch 32 is pressed. Which seedling supply switch 3
You may press 2. Then, as shown in FIG. 6, the seedling placement part 4 is raised to a level at which the elevating link device 3 becomes horizontal, and the lifting mechanism 8 is operated to raise the elevating frame 9 to a height corresponding to the seedling mounting table. . Next, seedling supply cylinder 1
The guide rails 20 rotate to the position P1. The seedling collecting plate 19 is inclined backward and downward, and the seedling collecting plate 19 is tilted downward.
The upper seedling slides down on the seedling mounting table 4a. Further, as the seedling supply cylinders 11, 11 expand and contract, the guide rail 20 swings between the P1 position and the P2 position. Thus, the seedling collecting plate 19 is vibrated, and the seedlings remaining on the seedling collecting plate 19 are shaken off. Then, the seedling supply cylinder 11,
11 is extended, and the guide rail 20 returns to the original position. These seedling supply operations are controlled so as to be performed only when the seedling placing table 4a is located at the center of the left-right stroke.

The structure for supplying seedlings to the seedling mounting table 4a at the position of the seedling placement section 4 in which the lifting link device 3 is horizontal is as follows. That is, the lifting link device 3
Is in the above state, the seedling planting section 4 is located at the rearmost position. Therefore, the seedling replenishing unit 5 can be arranged between the control seat 2a of the traveling vehicle body 2 and the seedling planting unit 4 without providing the seedling transplanting unit 4 far away from the traveling vehicle body 2.

Next, FIGS. 9 and 10 show different seedling supply units. The seedling replenishing section 5 has a lug 10a formed at a pitch corresponding to the width of each strip seedling mounting section of the seedling mounting table 4a over the entire area of the transport belt 10, and is provided at an arbitrary position close to the moving path of the transport belt 10. A belt position sensor 50 for detecting a lag is provided. Belt position sensor 50
Is a capacitance type proximity switch, which is supported by the parallel link 51 so as to move up and down integrally with the tension pulley 13C. Therefore, even if the belt becomes slack, the distance from the belt position sensor 50 to the lug 10a is kept constant, and the lug can be accurately detected.

When seedlings are replenished to the ridge side end of the conveyor belt 10, the seedling replenishment detection switch 35 senses this, and the upper part of the conveyor belt 10 moves to the side opposite to the ridges. When the belt position sensor 50 detects the next lag after moving by one lag pitch, the operation of the transport belt 10 stops. Hereinafter, similarly, the supply of the seedlings of the transport belt 10 and the operation of the transport belt 10 are repeated, and the six seedlings are transported to the vicinity of the seedling mounting table 4a.
As described above, when the operation stop timing of the conveyor belt 10 is determined by directly detecting the lag of the conveyor belt 10, the moving amount of the conveyor belt 10 is always accurate regardless of the expansion and contraction of the conveyor belt 10. is there.

[0026]

As described above, the seedling transplanter according to the present invention can supply seedlings to the seedling mounting table only by supplying seedlings to the transport means at the side position of the machine such as ridges. The seedlings to be supplied can be transported to the vicinity of the seedling table in a state where a predetermined number of seedlings are arranged at a constant pitch, and the seedlings to be supplied can be transported to the position corresponding to each strip of the seedling table. Therefore, the seedlings conveyed to the vicinity of the seedling table can be supplied to the seedling table without difficulty and stably, so that the seedling replenishing operation can be performed accurately and efficiently.

[Brief description of the drawings]

FIG. 1 is a side view showing a state in which a riding rice transplanter is planted.

FIG. 2 is a plan view of the riding rice transplanter.

FIG. 3 is a rear view of the seedling supply unit.

FIG. 4 is a rear view of the left end portion of the seedling transporting unit showing a state at the time of replenishing seedlings.

FIG. 5 is a side view of a main part of the seedling supply unit.

FIG. 6 is a side view showing a state in which the riding rice transplanter supplies seedlings.

FIG. 7 is a block diagram of a control system of a seedling supply unit.

FIG. 8 is a perspective view of a seedling collecting plate.

FIG. 9 is a rear view of a different seedling supply unit.

FIG. 10 is an enlarged view of a main part thereof.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 Riding rice transplanter (seedling transplanter) 2 Running vehicle body 3 Elevating link device 4 Seedling planting part 4a Seedling platform 5 Seedling replenishment part 8 Lift mechanism 10 Transport belt (seedling transport means) 10a Rug (partition) 11 Seedling supply cylinder ( Seedling supply means) 19 Seedling board 20 Guide rail

Continuation of the front page (72) Inventor Tatsuyuki Ouchi 1 Yachikura, Tobe-cho, Iyo-gun, Ehime Prefecture Iseki Agricultural Machinery Co., Ltd. F-term (reference) 2B060 AA01 AB05 AC03 AD09 BA04 BA07 BA09 CB02 CB06 CB11 CB23 2B064 AA05 AA07 AB01 CA05 CA06 CA10 CA16 CA22 CA30 CA35 CB07 CB09

Claims (3)

[Claims] A seedling transfer means for transferring seedlings from a lateral position of the body to a position near a seedling table, and a seedling supply means for supplying the seedlings transferred to a position near the seedling table to the seedling table. A seedling transplanter, wherein the seedling transfer means intermittently transfers seedlings by a predetermined distance. 2. A seedling transfer means for transferring seedlings from a lateral position of the body to a position near a seedling table, and a seedling supply means for supplying the seedlings transferred to a position near the seedling table to the seedling table. The seedling transfer device is characterized in that the seedling transfer means mounts the seedlings in parallel in the seedling transfer direction, and a partition is provided at a boundary portion of each seedling mounting position. 3. A seedling transfer means for transferring seedlings from a lateral position of the body to a position near a seedling table, and a seedling supply means for supplying the seedlings transferred to a position near the seedling table to the seedling table. The seedling supply means tilts the seedlings conveyed to the vicinity of the seedling table so that the seedling table side is at a lower position, and applies vibration to the seedlings in the inclined state to slide the seedlings into the seedling table and supply the seedlings. Seedling transplanter, characterized in that: