JP2000232809A - Seedling transplanter - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a seedling transplanter capable of readily carrying out the loading operation of a seedling tray holding frame and extremely improving an operation efficiency by constituting the seedling transplanter so as to feed each fixed number of seedling tray retained in the holding frame to a transportation route. SOLUTION: A seedling planting part 4 is detachably provided with a seedling tray holding frame 50 capable of retaining plural seedling trays T charged with a seedling. The seedling trays T retained in the holding frame 50 are fed one by one to a transportation route. A supporting apparatus 30 for the seedling tray holding frame 50, capable of being inclined according to the inclination of the transportation route after the seedling tray holding frame 50 is loaded on the seedling planting part 4 in an approximately horizontal position of the seedling trays T, is installed. Further, preferably a means for forcibly sending the seedling trays T of the seedling tray holding frame 50 loaded on the seedling planting part 4 to the transportation route is arranged.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a seedling transplanter that uses seedlings grown in seedling trays in which seedling pots are arranged vertically and horizontally.

[0002]

2. Description of the Related Art As a seedling transplanter for pot seedlings, seedling trays containing seedlings are loaded into a seedling planting section, and the seedling trays are transported along a predetermined transport path. There is a configuration in which a seedling is taken out from a seedling tray and planted in a field. Conventionally, a seedling transplanter of this configuration is provided with a seedling mounting table on which a plurality of seedling trays can be placed in a seedling planting section. Had to be supplied.

[0003]

When replenishing seedlings to the above-mentioned conventional seedling transplanting machine, a seedling tray transport frame capable of holding a plurality of seedling trays in a shelf shape is used to transfer seedlings from a nursery facility to a field. The trays were transported, the seedling trays were manually removed from the transport frame, and the trays were loaded one by one on the seedling table. For this reason, the work efficiency of replenishing seedlings was poor. Therefore, an object of the present invention is to make it possible to efficiently supply seedlings.

[0004]

In order to solve the above problems, the present invention has the following arrangement. That is, the seedling transplanter according to the present invention is a seedling transplanter that transports a seedling tray accommodating seedlings along a predetermined transport path, takes out the seedling from the seedling tray at an appropriate position on the transport path, and plants the seedling in a field. A seedling tray holding frame capable of holding a plurality of the seedling trays is detachably provided in the seedling planting section, and the seedling trays held by the holding frame are supplied to the transport path one by one. It is characterized by doing. As a seedling tray holding frame,
It is preferable that the seedling tray carrying frame can be used as it is.

[0005] Further, after the seedling tray holding frame is loaded in a posture in which the seedling tray is substantially horizontal, a supporting device for the seedling tray holding frame that can be tilted so as to adapt to the inclination of the transport path is provided. This is preferable because the tray holding frame can be easily loaded into the seedling mounting portion.

Further, if means is provided for forcibly sending the seedling tray of the seedling tray holding frame loaded in the seedling mounting section to the transport path, the seedling tray is reliably supplied from the seedling tray holding frame to the seedling tray transport path. It is preferable because it can be used.

[0007]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS Hereinafter, a preferred embodiment shown in the drawings will be described. In the seedling transplanter 1 shown in FIGS. 1 and 2, an eight-row seedling planting section 4 is mounted on the rear side of the riding traveling vehicle body 2 via a link device 3 so as to be able to move up and down. In addition, a fertilizer tank and a fertilizer feeding section of the fertilizer application device 5 are disposed at a rear portion of the traveling vehicle body 2.

The traveling vehicle body 2 is a four-wheel drive vehicle provided with a pair of left and right front wheels 6, 6 and rear wheels 7, 7, and a transmission case 8 is disposed at a front portion of an airframe, and is rearward from the transmission case. An engine 10 is mounted on an extending main frame 9. A seat 11 is installed above the engine 10, and a steering wheel 1 for steering the front wheels 6, 6 is provided in front of the seat 11.
2 are provided.

The link device 3 is provided with a frame 9 of the traveling vehicle body 2.
The upper link 21 and the upper link 21
1 and the lower links 22, 22 are rotatably mounted,
A connection frame 23 is connected to the rear ends of these upper and lower links. The front end of a rolling shaft 24 rotatably supported on the seedling mounting part 4 side is inserted and connected to the lower end of the connection frame 23. Thereby, the seedling planting part 4 is mounted in a rolling manner in the traveling direction. When the hydraulic cylinder 26 for raising and lowering the seedling planting section is extended and retracted, the upper and lower links 21 and
1, 2, 22 rotate around the support shaft on the link base 20 side, and the seedling planting part 4 moves up and down.

[0010] The seedling planting section 4 has four planting units which are adjacent to each other and are formed as one unit. Each planting unit includes a support device 30 for supporting the seedling tray holding frame 50 and a seedling for transporting the seedling tray T supplied from the seedling tray holding frame 50 supported by the supporting device along a predetermined transport path. Tray transport device 31 and seedling removal position P in the transport path
A seedling removal device 33 for taking out seedlings from one horizontal row of seedling trays, a seedling transfer device 34 for transferring the taken seedlings in a locus that draws an arc toward the lower front, and a seedling from the seedling transfer device. Seedling extracting device 35 for extracting the seedlings, and a seedling lateral feeding device 36 for laterally feeding the extracted seedlings of one horizontal row halfway to the left and right sides.
And seedling planting devices 37, 37 for taking the seedlings sent by the seedling lateral feeding device and planting them in the field. At the end of the transport path, there is provided an empty box collection frame 38 capable of accommodating a plurality of empty seedling trays after the seedlings have been taken out.

Below each planting unit, there are provided floats 40,... Which slide while leveling the field scene during the planting operation. The two floats 40, 40 at the center are also sensors for detecting irregularities in the field scene. During planting work, the vertical movement of the front end of the sensor float is detected by the vertical movement detection mechanism 41, and the vertical movement detection mechanism 41 detects the vertical movement according to the detection result. Hydraulic cylinder 26
Is switched to raise and lower the seedling planting section 4. Thereby, the planting depth of the seedlings is always kept constant.

Further, on both left and right sides of each of the floats 40,..., Groove-forming tools 43,. The fertilization guides 44,... The fertilizer feeding section of the fertilizer applicator 5 and the fertilizer guides 44 are connected by fertilizer hoses 45. At the time of planting work, fertilizer application device 5
Are transferred to fertilizer guides 44,... Via fertilizer hoses 45,..., And are dropped into fertilizer grooves formed by the groove forming tools 43,.

The seedling tray holding frame 50 is formed with four stages of housing portions 50a,... Capable of housing seedling trays at appropriate intervals above and below inside a rectangular parallelepiped outer frame. When the seedling tray T is accommodated in the accommodating portion 50a, one end of the seedling tray T in the longitudinal direction projects outside the entrance opening 50b. As the seedling tray holding frame 50,
A transport frame conventionally used for transporting seedling trays can be used as it is.

To load the seedling tray holding frame 50 into the seedling mounting portion of the seedling transplanter, a stopper frame 51 is attached to the access opening 50b (see FIGS. 3 and 4). Stopper frame 5
1, a stopper 53 is provided at a position corresponding to the accommodation section of each step, the stopper 53 being urged by a torque spring 52 in a direction in which the claw section 53a rotates downward. Accommodation section 50
When the seedling tray T is stored in the seedling tray T, as shown in FIG. 4 (a), the claw portions 53a are formed at the left and right end edges of the seedling tray by the action of the torque spring 52.
By engaging with a, the seedling tray T is prevented from dropping out of the storage section even when the opening side faces downward.
When the rear end of the stopper 53 is pushed forward by the frame or the like of the seedling tray transport device 31, the stopper 53 rotates against the force of the torque spring 52, as shown in FIG. The claw portion 53a comes out of the square hole Ta.

The seedling tray holding frame support device 30 is mounted on a slide base 57 rotatable about a shaft 56 by a hydraulic cylinder 55, and a support base 58 on which the seedling tray holding frame is mounted is slidable by a slide motor or the like. Have been. By rotating the slide base 57, the support 58
Moves between the replenishment position A and the supply position B. At the replenishment position A, the holding portion of the held seedling tray holding frame is horizontal, and at the supply position B, the holding portion has a posture matching the inclination of the start end of the transfer path of the seedling tray transfer device 31.

FIG. 5 shows a main part of the seedling tray transport device. A pair of left and right automatic supply rollers 60 and 61 for feeding the seedling tray with the left and right edges of the seedling tray T sandwiched from both the upper and lower sides at a position slightly lower in the transport than the transport path start end of the seedling tray transporting device 31. Is provided. The lower roller 60 is a driving roller and is driven by the power of a motor 62. The upper roller 61 is a holding roller, and is a rotatable support arm 63.
And is urged by the spring 64 toward the drive roller.

A driving roller via a chain 65 is provided at the start end of the transport path on the more upstream side of the automatic supply rollers 60 and 61 as means for forcibly sending the seedling tray of the seedling tray holding frame to the transport path. A feed roller 66 is provided, which is transmitted from the rotary member 60 and rotates. A plurality of protrusions are formed on the outer periphery of the feed roller 66, and engage with the bottom of the pot of the seedling tray to feed the seedling tray.

The motor 62 includes a limit switch 67 for detecting the presence or absence of a seedling tray at the start end of the transport path, and a limit switch (not shown) provided at an appropriate position on the transport path.
Is controlled based on the detection result. Also, the support table 38
Is also controlled based on the detection result of the limit switch 67.

At the time of seedling replenishment, the seedling tray holding frame 50 containing the seedling tray to which the stopper frame 51 is attached is placed at the replenishing position A.
Is loaded on the support base 58 located at the bottom of the screen. This replenishment work is performed through the fertilizer applicator 5, but the support table 58 at the replenishment position A
Since this is horizontal, this operation can be performed relatively easily. In other words, the operator only needs to lift the seedling tray holding frame 50 to an appropriate height, extend the arm as it is, and move the seedling tray holding frame 50 horizontally rearward. You don't have to.

When the seedling tray holding frame 50 is loaded, the support 58 moves to the supply position B. At the supply position B, at the first stage, the lowermost storage unit and the transport path face each other at the same height. At this time, the lowermost stopper 53 is pushed by the frame of the seedling tray transport device 31 to release the engagement of the seedling tray. When the limit switch 67 detects the seedling tray T, the drive roller 60 and the feed roller 66 rotate, and the lowermost seedling tray is pulled out of the storage section and supplied to the transport path.

When the lowermost seedling tray has been supplied to the transport path, the support 38 descends to a position where the second-stage storage section and the transport path from the bottom face each other at the same height, and the seedlings in the storage section are lowered. The tray is supplied to the transport path. Thereafter, similarly, the third and fourth seedling trays from the bottom are also supplied to the transport path. Once all the seedling trays have been supplied, support table 38 is needed for the next seedling replenishment.
Returns to its original position.

The empty box storage frames 38,... Of each planting unit
It is provided on rails 70 provided in the left-right direction so as to be movable left and right. Therefore, by moving the empty box housing frame 38 to a position between the planting units, the empty boxes accumulated in the empty box housing frame 38 can be easily collected. In the illustrated seedling transplanter, the empty box housing frames 38,... Are provided in the seedling planting section 4, but the empty box housing frames may be provided in the traveling vehicle body 2.

FIGS. 6 and 7 show an example (1 ') in which a supporting device for the seedling tray holding frame is provided on the traveling vehicle body side. A support base 82 is connected to the distal ends of a pair of left and right parallel links 80, 81 whose bases are supported by the main frame 9. By rotating the parallel links 80, 81 with a hydraulic cylinder 83, the support base 83 is rotated. Moves between the supply position A and the supply position B. A device (not shown) for changing the angle of the support 82 is provided. Also in this seedling transplanter 1 ′, the seedling tray holding frame 50 loaded on the support 83 is horizontal at the replenishment position A and supplied. At the position B, the posture coincides with the inclination of the start end of the transport path.

[0024]

As is apparent from the above description, the seedling transplanter according to the present invention does not load the seedling trays one by one into the seedling mounting portion at the time of replenishing the seedlings, but uses a plurality of seedling trays. Since the stored seedling tray holding frame can be loaded into the seedling mounting section, the work efficiency can be remarkably improved as compared with the conventional configuration.

Further, if the seedling tray holding frame is loaded into the seedling mounting portion in a substantially horizontal posture and then tilted in accordance with the inclination of the transport path, the loading operation of the seedling tray holding frame can be facilitated. is there.

Furthermore, if means for forcibly sending the seedling tray of the seedling tray holding frame loaded in the seedling planting section to the transport path is provided, the supply of the seedling tray from the seedling tray holding frame to the transport path can be ensured. This has the effect.

[Brief description of the drawings]

FIG. 1 is a side view of a seedling transplanter.

FIG. 2 is a plan view of the seedling transplanter.

FIG. 3 is a rear view showing a state where a stopper frame is attached to the seedling tray holding frame.

FIGS. 4A and 4B are side views showing different states of a stopper.

FIG. 5 is a side view of a main part of the seedling tray transport device.

FIG. 6 is a side view of a different seedling transplanter.

FIG. 7 is a plan view of the seedling transplanter shown in FIG.

[Explanation of symbols]

T Seedling tray 1 Seedling transplanter 2 Running car body 3 Link device 4 Seedling plant 30 Supporting device for seedling tray holding frame 31 Seedling tray transport device 38 Empty box collection frame 50 Seedling tray holding frame 51 Stopper frame 53 Stopper 60 Drive roller 61 Holding roller 66 Feed roller (means for forcibly sending the seedling tray of the seedling tray holding frame loaded in the seedling planting section to the transport path)

 ──────────────────────────────────────────────────続 き Continuing on the front page (72) Inventor Hideo Iseki 1 Eighteen, Hachikura, Tobe-cho, Iyo-gun, Ehime Prefecture Iseki Agricultural Machinery Co., Ltd. (72) Inventor Tatsuyuki Toritsu 1-Yachikura, Tobe-cho, Iyo-gun, Ehime Pref. Iseki Agricultural Machinery Co., Ltd. F-term (reference) 2B064 AA05 AA07 AB07 CA11 CA15 CA26 CA33 DB03 DB14 DC08 EA20 EB04

Claims (3)

[Claims] 1. A seedling transplanter for transporting a seedling tray containing seedlings along a predetermined transport path, removing seedlings from the seedling tray at an appropriate position on the transport path, and planting the seedlings in a field. A seedling tray holding frame capable of individually holding the seedling tray is detachably provided in the seedling planting portion, and the seedling trays held by the holding frame are supplied to the transport path one by one. Seedling transplanter. 2. A supporting device for a seedling tray holding frame, which is capable of being tilted in accordance with the inclination of the transport path, after loading the seedling tray holding frame into the seedling planting section so that the seedling tray is substantially horizontal. The seedling transplanter according to claim 1, wherein the seedling transplanter is used. 3. The seedling transplanter according to claim 1, further comprising means for forcibly sending out the seedling tray of the seedling tray holding frame loaded in the seedling mounting section to the transport path.