JP2857572B2 - Transplanter seedling feed synchronization device - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a seedling feed synchronizing device for a transplanting machine which transplants potato seedlings such as cabbage, lettuce and the like in a row while traveling.

[0002]

2. Description of the Related Art As a transplanter for transplanting pot seedlings to a field, there is one described in Japanese Patent Application Laid-Open No. 4-16106.
This is a seedling box with a large number of pots arranged in rows and columns.
Seedling pushing means for pushing one row of pot seedlings from behind; seedling feeding means for arranging a plurality of seedling receiving trays for receiving the pushed one row of potted seedlings in an endless manner and intermittently moving in the horizontal direction; By tilting the seedling receiving tray on the seedling sending side of the seedling sending means, the potted seedlings on the seedling receiving tray are slid one by one and transferred to the planting means.

[0003]

By the way, not all pot seedlings grown in a seedling box are always germinating and growing properly. It is necessary to inspect and remove defective seedlings. For this purpose, the seedling sending means is provided with a seedling detection sensor comprising a contact sensor one pitch before reaching the seedling sending section, and this seedling detection sensor is moved up and down one reciprocation every one intermittent operation of the seedling sending means. It has been considered that the contact of the detection sensor is brought into contact with the foliage of the pot seedling to detect the quality of the seedling based on the presence or absence of the foliage.

In this case, the vertical movement of the seedling detection sensor must be synchronized with the intermittent operation of the seedling feeding means. However, if the movement of the seedling receiving tray is directly detected by the limit switch, the movement of the seedling receiving tray varies. Therefore, there is a problem that the ON timing of the operating means for vertically moving the seedling detection sensor is shifted. Therefore, in view of the above problem, the present invention reliably detects one intermittent operation of the seedling receiving tray for intermittently transferring seedlings. It is intended to be considered so that

[0005]

The technical means taken by the present invention to achieve the above object is to arrange a large number of seedling receiving trays 37 on which seedlings C are placed, in an endless manner, In order to intermittently move the receiving tray 37 one pitch at a time, an intermittent mechanism 39 including a driving wheel 41 and a driven wheel 40 intermittently rotated by the rotation of the driving wheel 41 is interposed in the power transmission system of the seedling receiving tray 37. And the seedling receiving tray 37
In the transplanter provided with the operating body 52 that operates when the intermittent movement stops, the intermittent operation of the driven wheel 40 of the intermittent mechanism 39 stops.
A sensor 48 for detecting stop is provided, and the operating body 52 is operated by a detection signal of the sensor 48.

[0006]

[Function] The intermittent operation of the driven vehicle of the intermittent mechanism is stable,
This By detecting the stop of the intermittent operation of the driven wheel can be reliably detect the stop of the intermittent operation of Nae受tray.

[0007]

Embodiments of the present invention will be described below with reference to the drawings. 3 and 4, the transplanter 1 is a walking type having a steering handle 3 at a rear portion of a traveling vehicle body 2, and runs in the longitudinal direction across a ridge A covered with a multi-film. . An engine 5 is mounted on a gantry 4 at the front of the traveling vehicle body 2, and the engine 5 is covered with a bonnet 7 having left and right spare seedling box mounts 6.
A transmission case 8 is fixed to the rear of the gantry 4, and an input portion of the transmission case 8 is connected to an output portion of the engine 5 by a winding transmission 9.
Are linked together.

The wheel transmission shaft 1 is provided from inside the transmission case 8.
0 and a PTO shaft 12 for driving the working unit 11, power is taken out. The left and right ends of the wheel transmission shaft 10 are linked to left and right drive wheels 13, and the drive wheels 13 Roll the groove B between the ridges A. The working unit 11 includes a seedling transfer device 14, a planting device 15, a multi-perforation device 16, and the like, and swings up and down around the axis of a power receiving shaft 17 supported on a fixed side such as the transmission case 8. The movable frame 18 is provided, and a rear portion of the movable frame 18 is elastically and suspendedly connected to a main frame 20 of the traveling vehicle body 2 by elastic supporting means 19. A bevel gear 21 that meshes with the PTO shaft 12 is fixed on the power receiving shaft 17.

As shown in FIGS. 5 to 7, the seedling transfer device 14 includes a seedling box vertical feed mechanism 22, a seedling pushing mechanism 23,
It has a seedling lateral feed mechanism 24 and a defective seedling detection mechanism 25, which are mounted on the movable frame 18 via a pair of front and rear stays 26 and the like. The seedling box vertical feed mechanism 22 includes a pair of front and rear center guide rails 27 that are curved in an arc shape, and a pair of front and rear side guide rails 28 that are arranged on the front side of the center guide rail 27 and along the lower half. Seedling box guiding means 29 having The seedling box 30 is made of resin and has flexibility,
A large number of pots 31 arranged vertically and horizontally protrude from the rear side, and pot seedlings C are raised in the pots 31. The seedling box 30 is inserted from the trumpet-shaped insertion opening at the upper part of the side guide rail 28, and at the lower part. It is inserted sideways from the outlet.

The seedling box vertical feed mechanism 22 includes a seedling box 30.
And a pair of left and right feed claws 32 for intermittently feeding the feed in the vertical direction one pitch at a time. The feed claws 32 enter the gaps between the pot portions 31 adjacent in the vertical direction and move down after moving down. It has become. The seedling pushing mechanism 23 includes a pusher 33 for feeding a row of potted seedlings C from behind the seedling box 30 through holes formed in the bottom wall of the pot portion 31.

As shown in FIGS. 6 to 8, the seedling lateral feed mechanism 24 winds an endless chain 36 over a driving sprocket 34 and a driven sprocket 35 disposed opposite to each other in the front and rear directions. A large number of seedling receiving trays 37 are arranged in rows at intervals along the entire circumference in the longitudinal direction. The drive sprocket 34 is fixed to a drive shaft 38, and as shown in FIGS. 1 and 5, a driven wheel 40 of a Geneva gear (intermittent mechanism) 39 is fixed to the drive shaft 38, and a driving wheel 41 of the Geneva gear 39 is a drive shaft 38. And is fixed on an intermediate shaft 42 parallel to. The intermediate shaft 42 has a support shaft 43 parallel to it.
The cylinder shaft 44 externally fitted thereon is interlocked and connected via a chain transmission mechanism 45, and the cylinder shaft 44 is interlockingly connected to the power receiving shaft 17 via a chain transmission mechanism 46.

Therefore, the seedling lateral feed mechanism 24 is driven by the power from the PTO shaft 12 projecting from the transmission case 8.
In the present embodiment, the seedling lateral feed mechanism 24 moves the seedling receiving tray 37 by １ ／ rotation of the driven wheel 40 of the Geneva gear 39.
Are driven so as to intermittently move backward by one pitch. As shown in FIGS. 1 and 2, four pins 47 disposed at equal intervals in the circumferential direction are fixed to the driven wheel 40 of the Geneva gear 39, and a pin is provided near the driven wheel 40. A proximity sensor 48 (or a limit switch or the like) for detecting 47 is provided. Proximity sensor 4
Numeral 8 is such that the pin 47 is detected when the driven vehicle 40 is at a standstill, and the movement of the seedling receiving tray 37 of the seedling lateral feeding mechanism 24 is detected by detecting the intermittent operation of the driven vehicle 40. It has become.

The seedling receiving tray 37 is swingable from a horizontal position to a tilted position around a front-rear axis 49, and is urged by a torsion coil spring 50 from the horizontal position to the tilted position. The seedling receiving tray 37 is held in a horizontal position by the guide rail 51 on the upper side, and each pot seedling C extruded by the seedling pushing mechanism 22 is held by each upper seedling receiving tray 37. Is done.

The guide rail 51 is formed with a lowered portion 51A which is lowered by one step on the drive sprocket 34 side of the seedling lateral feeding mechanism 24. When the seedling receiving tray 37 arrives at the lowered portion 51A, a spring 50 forcibly forces the seedling receiving tray 37. The tilted posture is changed, and the pot seedling 31 on the seedling receiving tray 37 is
Dropped from the side and sent out. As shown in FIGS. 6 and 8, the defective seedling detecting mechanism 25 includes a seedling detecting sensor (operating body) 52 disposed one pitch above the seedling sending position and an operating means 53 for vertically moving the same.
And a contact member 54 provided on the entire seedling receiving tray 37.

The contact member 54 is pivotally supported by the seedling receiving tray 37, and is in contact with the contact portion 54A of the seedling a of the pot seedling C, and a sensing portion 54 protruding in a direction crossing the contact portion 54A.
B, when the foliage a comes into contact with the contact portion 54A, the sensing portion 54B becomes upward (detection posture), and when the foliage a does not exist in the pot seedling C, the sensing portion 54B becomes lower than horizontal (non-detection posture). It has become.

The seedling detection sensor 52 is formed by a limit switch or the like, and the actuating means 53 is formed by a rotary solenoid or the like. The seedling detection sensor 52 is attached to a rotary shaft of the rotary solenoid. 52
The tip of A rotates so as to move vertically. The operating means 53 is operated by a detection signal of the proximity sensor 48 near the driven vehicle 40 of the Geneva gear 39, and is operated in synchronism with the movement of the seedling receiving tray 37 without fail. And the seedling receiving tray 37
Is moved by one pitch and stops, the detecting piece 52A of the seedling detecting sensor 52 is lowered by the operating means 53, and the detecting piece 52A comes into contact with the detecting portion 54B when the contact member 54 is in the foliage a detecting state. This is detected, and after the detection, the seedling receiving tray 37 returns to the upper position before moving.

When the foliage a does not exist, the sensing piece 52A does not come into contact with the sensing portion 54B even if it descends.
The seedling detection sensor 52 detects that the seedling on the seedling receiving tray 37 is a defective seedling. As shown in FIG. 5, a parallel link 56 is supported on the movable frame 18 via a suspension link 55 so as to be swingable in the vertical direction, and a beak-shaped opening and closing is provided at the tip of the parallel link 56. Flexible planting cylinder 5
7 (planting means).

The parallel link 56 is urged upward by a spring, and an oval fitting 58 is fixed to the upper link, and a roller 60 rotatable around a support shaft 59 is fitted to the fitting 58. I agree. The support shaft 59 is linked to the power receiving shaft 17 via a chain transmission mechanism 61, and the power from the PTO shaft 12 rotates the roller 60 around the support shaft 59, thereby causing the parallel link 56 to move forward and backward. The planting tube 57 swings up and down while swinging, and the upper limit of the planting tube 57 is regulated by a stopper (not shown), so that the planting tube 57 moves up and down so as to draw a locus D as shown in FIG. ing.

The multi-piercing device 16 is provided in front of the planting cylinder 57. The perforation device 16 has a gas burner that uses gas from a propane gas cylinder as a fuel, and incinerates the multi-film covered on the ridge A at equal intervals in the ridge longitudinal direction to form holes. Then, the planting cylinder 57 that has descended enters this hole, and the pot seedling C is transplanted to the ridge A.

Two seedling shooters 62 are provided between the seedling sending side of the seedling lateral feeding mechanism 24 and the planting cylinder 57. As shown in FIGS. 9 and 10, the seedling shooter 62 is supported by a vertically open tubular body 63 and a lower portion of the tubular body 63 via a pivot 64 so that the lower end opening of the tubular body 63 can be freely opened and closed. And a lid 65 to be closed. Of the two seedling shooters 62, one seedling shooter 62 is disposed between the seedling sending position of the seedling receiving tray 37 and the seedling receiving position E of the planting cylinder 57, and this position (seedling receiving position F). To guide the pot seedlings C dropped from the seedling receiving tray 37 to a position above the seedling receiving position E of the seedling tube 57 and hold the seedling tube 57 while the seedling tube 57 moves to the seedling receiving position E.

When the planting cylinder 57 arrives at the seedling receiving position E, the cover 65 is opened in conjunction with the operation of the planting cylinder 57 (or by driving means such as a rotary solenoid or a motor). The pot seedling C is dropped and supplied to the planting cylinder 57. Another seedling shooter 62
Is located at the non-seedling delivery position G, and good seedlings are retained.

The cylindrical body 63 of each seedling shooter 62 is supported by a boss 67 at the upper end of a rotating shaft 66 provided at the center between the two via an arm 68, and rotates the rotating shaft 66 around the axis. Thus, the positions of the two seedling shooters 62 are interchanged. When the defective seedling detected by the defective seedling detection mechanism 25 is sent to the seedling shooter 62 located at the seedling transfer position F, the rotating shaft 66 is rotated around the axis, and the planting cylinder 57 is moved. Before moving to the seedling receiving position E, the seedling shooter 62 located at the seedling transfer position F holding the defective seedlings and the non-seedling transfer position G holding the good seedlings.
Swap the seedling shooter 62 in

Thereafter, the lid 65 of the seedling shooter 62 moved to the non-seedling transfer position G is opened to eliminate defective seedlings and refill good seedlings. As a result, defective seedlings are eliminated and only good seedlings are transplanted.

[0024]

According to the present invention, a large number of seedling receiving trays on which seedlings are placed are arranged endlessly, and the large number of seedling receiving trays are intermittently moved one pitch at a time. In addition, an intermittent mechanism including a driving wheel and a driven wheel intermittently rotated by the rotation of the driving wheel is interposed, and the transplanter further includes an operating body that operates when the intermittent movement of the seedling receiving tray is stopped. Intermittent operation of driven vehicle of intermittent mechanism
Of a sensor for detecting a stop is provided. Thus to operate the operating body by the detection signal of the sensor, can reliably detect the stop of the intermittent operation of Nae受tray, there is no deviation of the operation timing of the actuation member It works.

[Brief description of the drawings]

FIG. 1 is a schematic view of a power transmission system of a seedling lateral feeding mechanism.

FIG. 2 is a side view of a driven vehicle of the Geneva gear.

FIG. 3 is a side view of the transplanter.

FIG. 4 is a plan view of the transplanter.

FIG. 5 is a side view of a working unit.

FIG. 6 is a rear view of the working unit.

FIG. 7 is a plan view of a working unit.

FIG. 8 is a perspective view of a lateral seedling feeding mechanism and a defective seedling detection mechanism.

FIG. 9 is a schematic view of a seedling shooter and a planting cylinder.

FIG. 10 is a plan view of a seedling shooter.

[Explanation of symbols]

 37 seedling receiving tray 39 Geneva gear (intermittent mechanism) 40 driven vehicle 41 prime mover 48 proximity sensor 52 seedling detection sensor (operating body) C pot seedling

──────────────────────────────────────────────────続 き Continuing on the front page (72) Inventor Yuji Izuno 1-1-1 Hama, Amagasaki-shi, Hyogo Prefecture Kubota Corporation Electronic Technology Center (72) Inventor Yuji Watanabe 1-1-1 Hama, Amagasaki-shi, Hyogo (56) References JP-A-5-284819 (JP, A) JP-A-4-104706 (JP, A) (58) Fields investigated (Int. Cl. ⁶⁾ , DB name) A01C 11/02

Claims (1)

(57) [Claims] 1. A large number of seedling receiving trays (37) on which seedlings (C) are placed are arranged endlessly, and the large number of seedling receiving trays (37) are intermittently moved by one pitch. An intermittent mechanism (39) including a prime mover (41) and a driven vehicle (40) intermittently rotated by rotation of the prime mover (41) is interposed in the power transmission system of (37). In the transplanter provided with an operating body (52) which operates when the intermittent movement of the tray (37) is stopped , the intermittent operation of the driven wheel (40) of the intermittent mechanism (39) is stopped.
A sensor (48) for detecting stop is provided.
The seedling feed synchronization device for a transplanter, wherein the operating body (52) is operated by the detection signal of 8).