JP2002223614A - Vegetable transplanter - Google Patents

Abstract

PROBLEM TO BE SOLVED: To accurately take out a seedling with a simple structure of seedling takeout claws in a vegetable transplanter for taking out the seedling from a seedling-carrying platform with the seedling takeout claws. SOLUTION: This vegetable transplanter is obtained by installing a seedling takeout part (16) for taking out two seedlings for one row from a seedling- carrying platform (21) with the seedling takeout claws (23) in sets of two claws different in phase by 180 deg. during one rotation of a rotary case (34) and using an intermittent gear in a transmission gear system (38) between a case driving shaft (37) in a rotary case (34) and a claw oscillating shaft (48) so as to temporarily stop the oscillating operation of the seedling takeout claws (23) during one rotation of the rotary case (34).

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a vegetable transplanting machine which takes out one seedling of vegetable seedlings such as onion, leaf onion and white onion from a seedling tray and plant it in a field.

[0002]

Conventionally, high-speed planting seedling removal claws such as onions or the like, which work on a crop with a short planting interval (8 to 10 cm) at a fixed vehicle speed or more without slowing down the vehicle speed. In the structure, two seedlings are attached to the case during one rotation of the rotary case so as to take out two seedlings per line, thereby enabling high-speed planting.

[0003] In such a seedling removal nail structure,
In order to obtain a seedling trajectory in which the seedling removal claw properly removes the seedling from the seedling mounting table, a regulating spring is interposed between the nail swinging shaft serving as the output shaft of the rotary case and the seedling removal claw, and the seedling removal guide is provided. The guide is provided so that the seedling removal claw is forcibly swung against the regulating spring, but in the direction opposite to the impact at the time of contact between the seedling removal claw and the guide, and the direction of movement of the seedling removal claw by the guide. There were inconveniences such as the seedling falling off the seedling removal claw at the time of high-speed seedling picking due to the swinging motion of.

[0004]

SUMMARY OF THE INVENTION Accordingly, the present invention provides a method of making a phase difference 180 degrees during one rotation of a rotary case.
A pair of seedling extraction claws for extracting two seedlings per row from the seedling mounting table, and an intermittent gear in a transmission gear system between a case drive shaft and a nail swing shaft in a rotary case. Is used to temporarily stop the swinging movement of the seedling picking claw during one rotation of the rotary case, eliminating the need for a seedling picking guide and a regulating spring for forcibly changing the seedling picking posture of the seedling picking claw as in the prior art. When the swing of the seedling removal claw is stopped due to the intermittent gear, the seedling removal claw is rotated integrally with the rotary case to form a return trajectory from the seedling removal position of the seedling removal claw to the seedling removal position. It has a seedling removal nail structure and obtains a good seedling trajectory to improve seedling accuracy.

[0005] In addition, a non-constant gear is used for a transmission gear system between a case drive shaft and a pawl swing shaft, and a rotary case is provided.
By changing the swinging speed ratio of the seedling picking nail continuously during rotation, the combination of the rotation of the rotary case and the swinging speed ratio of the seedling picking nail by the unequal speed gear causes the seedling picking nail to change the seedling. It is intended to easily obtain a seedling trajectory from entering the seedling tray of the mounting table to properly extracting the seedlings.

Further, by using a switching gear as a transmission gear system between the case drive shaft and the swinging shaft, the swinging speed ratio of the seedling take-out claw during one rotation of the rotary case is provided to be switchable. The movement locus of the seedling extraction nail for extracting seedlings from the seedling tray of the mounting table can be adjusted and set to an appropriate value, thereby improving the seedling extraction accuracy of the seedling extraction nails.

[0007]

Embodiments of the present invention will be described below in detail with reference to the drawings. 1 is an overall side view of the transplanting machine, FIG. 2 is an overall plan view of the same, FIG. 3 is a side view of the transplanting section, and FIG. 4 is a plan view of the transplanting section, where (1) is an engine (2). (3) is a front and rear slide frame (4)
(5) A fixed frame that supports the body (1) so that the body (1) is slidable left and right, (6) is a hydraulic slide cylinder that slides the body (1) via a slide arm (7),
(8) is the driving horizontal axis (1) from the transmission case (9).
The left and right rear wheels are supported by a left and right transmission case (11) via a left and right transmission case (11), and the left and right rear wheels (12) are supported on the front end side of the fixed frame (3) by an axle frame (13) so as to be able to vertically swing. Left and right front wheels, (14) is a hydraulic swing cylinder for vertically oscillating front and rear wheels (12, 8) via a fixed frame (3) rear end swing shaft (15), and (16) is an airframe ( A seedling supply device, which is a seedling take-out unit installed behind the 1) through a chassis frame (17),
(18) is a seedling planting device, which is a seedling planting section provided between the left and right rear wheels (8) and connected to the transmission case (9) via a planting drive case (19); Ridge surface (M)
A pair of left and right pressure reduction rollers for compressing the seedlings. A pot seedling (N) for one plant is chopstick-shaped from a seedling tray (22) on a seedling table (21) reciprocating left and right of the seedling supply device (16). The seedlings (N) are taken out with the seedling take-out nails (23), and the taken pot seedlings (N) are taken out of the multi-cutter (2)
4) A hopper with open-hole type seedling claw (2) that moves up and down in conjunction with
5), the pot seedlings (N) are planted (transplanted) at regular intervals on the ridge surface (M) of the machine body (1) by operating the steering handle (26). ,
The position of the planting streak is changed by adjusting the horizontal sliding of the body (1).

(27) a lifting lever for operating the swing cylinder (14) to raise and lower the machine body (1); (28) a planting clutch lever for engaging and disengaging the planting clutch; (29) Is a main transmission lever for shifting the traveling speed, (30) is a slide adjustment lever for adjusting the position of the body (1) in the left-right direction, and (31) is a switch for stopping the driving of the left and right rear wheels (8) to move the body (1). Left and right side clutch levers that perform turning operations.

As shown in FIG. 3 and FIG. 4, the seedling removal claw (23) and the seedling claw (25) are provided on one seedling mounting table (2).
The seedling tray (22) of 1) is arranged side by side with a certain interval on the left and right, and driven in phase to collect two seedlings from one seedling tray (22) and plant two seedlings at the same time. While doing
Each one in each seedling removal nail (23) and seedling-mounted nail (25)
It is provided that the phase is made different by 180 degrees on the same nail movement locus (A) (B) of the striation, so that seedling collection and planting are performed twice in one movement locus (A) (B). The seedling collecting speed and the seedling planting speed are almost doubled to perform the high-speed planting operation.

As shown in FIGS. 5 to 11, the seedling removal claw (23) has a phase adjusting plate (33) fixed to a fixing bracket (32) of the chassis frame (17), and is rotated at a constant speed in one direction. The rotary case (34) to be supported is supported on the adjusting plate (33) via the extraction claw drive shaft (35), and the rotary case (34) around the drive shaft (35) is rotated.
The base claw case shafts (37) of the two claw cases (36) are mounted at the 0-degree symmetrical positions, and the seedling removal claws (23) are mounted on the distal ends of these claw cases (36), respectively.

A sun gear (38) is loosely fitted to the take-out pawl drive shaft (35) in the rotary case (34), and the sun gear (38) is fixed to the adjusting plate (33) so that the phase can be adjusted. A gear (39) and a planetary gear (40) are supported in a rotary case (34) via an intermediate shaft (41) and a case shaft (37), and the sun gear (38) drives a fixed cam (42) by a gear ( 38)
And the idle gear (39) includes a driven gear (43) meshing with a sun gear (38) and a circumferential cam surface (4) of the fixed cam (42).
A driven cam (45) having a concave cam surface (45a) for sliding contact with the planetary gear (2a); and an output gear (46) meshing with the planetary gear (40).
0) and an output gear portion (46) are provided on an unequal speed gear (eccentric gear), and two planetary gears (40) are connected in a line and symmetrically to a central sun gear (38) via two idle gears (39). During the rotation of the rotary case (34) at a constant speed, the phase of the same claw movement locus (A) is changed by 180 degrees, and the seedlings (N) of two plants are alternately taken from the seedling tray (22).
Is configured to take out.

Further, a claw opening / closing cam (47) for opening and closing the seedling removal claw (23) to the left and right is provided in the claw case (36). Drive camshaft (4
8) and a left / right opening / closing rod (4) for opening and closing the right and left claw bodies (23a) and (23b) of the seedling extraction claw (23) at the distal end side of the substantially L-shaped claw case (36).
9) The opening / closing cam (47) is connected via the driven cam (51), the swinging plate (52), the opening / closing operation shaft (53), the opening / closing operation plate (54), etc., to form the rotary case (34). The left and right claw bodies (23a) (2)
When closing 3b), the seedlings are clamped.
3a) When opening (23b) these claw bodies (23
a) The linear left and right seedling pushing members (55), which are loosely fitted to the outside of the tip of (23b), are moved downward to push the seedlings (N) from the seedling take-out nails (23), and the seedlings are put on the seedling-attached nails (25). (N) is inherited.

As shown in FIGS. 5, 9 to 11, when the rotary case (34) makes one rotation counterclockwise around the take-out pawl drive shaft (35), the case shaft (37) is rotated by the rotary case ( One rotation in the direction opposite to the rotation direction of 34) is performed to swing the seedling removal claw (23), and as shown in FIGS. 5 and 8, the speed ratio between the output gear portion (46) and the planetary gear (40) ( When the transmission gear ratio is close to the maximum, the seedling removal claw (23) is swung to the maximum swing position, and is pushed into the seedling tray (22) of the seedling mounting table (21) to hold the seedling (N). A1) is formed, and the seedling removal locus (A) of the seedling removal claw (23) that holds the seedling (N) when the rotary case (34) rotates 180 degrees from the maximum position to the minimum position of the speed ratio.
2) is formed, and the seedling removal nail (2
3) is positioned substantially at the uppermost position of the movement locus (A), and when the rotary case (34) is rotated by approximately 90 degrees from the minimum position of the speed ratio (FIG. 10), the seedling removal claw (N) that holds the seedling (N). 23) is formed from the uppermost position of the locus (A) to the lowermost position to form a seedling descending locus (A3), and the nail (23) from the lowermost position of the seedling removal nail (23) to the entry position of the seedling tray (22). )) (FIG. 11) during the return operation (FIG. 11).
And the cam surfaces (42a) and (45a) of the driven cam (45) are slid in contact with each other to stop the rotation of the case shaft (37) during the rotation of the rotary case (34) and swing the seedling removal claw (23). A return trajectory (A4) in which the seedling removal claw (23) is stopped and moved up to the rush position around the removal claw drive shaft (35).
Is formed.

As described above, during one rotation of the rotary case (34), by changing the swinging speed ratio of the seedling removal claw (23) or stopping the swinging, the seedling tray (22) is rotated.
The trajectory (A) of one cycle until the seedling (N) is taken out and the seedling (N) is transferred to the seedling mounting claw (25) and returned to the seedling removal position again is represented by each trajectory (A1) (A2) (A3). (A4) to easily form a locus of movement (A) necessary for the seedling removal claw (23) to properly remove the seedling (N) from the seedling tray (22) of the seedling mounting table (21). Each of the gears (38) to be compactly assembled in the rotary case (34) by eliminating the need for a separate installation of a seedling guide and a regulating spring for forcibly changing the seedling taking position of the seedling removal claw (23) as in the prior art. )
The configuration of the gear system such as (39) and (40) enables the seedling removal nail (23) to reliably extract the seedling (N).

As is clear from the above description, two sets of seedlings for one row are transferred to the seedling mounting table by two sets of seedling extraction claws (23) having a phase difference of 180 degrees during one rotation of the rotary case (34). (21) A seed drive unit (16) for removing the seedlings from the case, and a case drive shaft (37) in a rotary case (34).
An intermittent gear is used for a sun gear (38), which is a transmission gear system between the drive cam shaft (48), which is a swing shaft of the claw, and the seedling removal claw (23) during one rotation of the rotary case (34). The swinging operation is temporarily stopped, so that a seedling picking guide and a regulating spring for forcibly changing the seedling picking posture of the seedling picking nail (23) as in the related art are made unnecessary, and the seedling picking nail (23) using an intermittent gear is used. When the swing of the seedling is stopped, the seedling removal claw (23) is rotated integrally with the rotary case (34) to form a return trajectory (A4) from the seedling removal position of the seedling removal nail to the seedling removal position. With a seedling extraction nail structure, it is possible to obtain a good seedling extraction movement locus (A) and improve seedling extraction accuracy.

An idle gear (3) which is a transmission gear system between the case drive shaft (37) and the drive cam shaft (48).
9) and a planetary gear (40) using a non-constant speed gear, so that the seedling removal claw (2) is rotated during one rotation of the rotary case (34).
The speed ratio of the swing motion of 3) is continuously changed.
With the combination of the rotation of the rotary case (34) and the change in the swinging speed ratio of the seedling removal claw (23) due to the non-uniform speed gear, the seedling removal claw (23) is moved to the seedling tray (22) of the seedling mounting table (21). And the seedling trajectory (A1) from the time when the seedling (N) is taken out to the time when the seedling (N) is properly taken out can be easily obtained, and an accurate and reliable seedling picking operation can be performed.

FIGS. 12 to 15 show an example of a construction in which the gear ratio between the sun gear (38) and the idle gear (39) is switchably provided in two stages in the above embodiment.
Two large-diameter and small-diameter sun gears (38a) and (38b) are loosely fitted and fixed to the take-out claw drive shaft (35), and the small-diameter and large-diameter 2 mesh with the sun gears (38a) and (38b).
An idle gear (39) having two driven gear portions (43a) and (43b) is supported by the intermediate shaft (41), and the adjustment plate (3) is provided.
3) The sun gears (38a) and (38b) are switchably connected to a cam shaft (56) of a fixed cam (42) which is fixed to a phase adjustable via a slide key (57), and two sun gears (38a). The rotation speed ratio of the claw case shaft (37) is changed in two stages by switching (38b), and the seedling removal claw (2
The configuration is such that the motion trajectory (A) of 3) is changed in two stages.

In substantially the same manner as in the previous embodiment, one rotation of the rotary case (34) is performed, and the cam surfaces of the fixed cam (42) and the driven cam (45) as shown in FIGS. At the time of sliding contact of (42a) and (45a), the seedling removal claw (23) is moved along the return trajectory (A4), and the gears (38) and (39) mesh from the state of FIG. 14 (2) to the state of FIG. 14 (3). Seedling removal locus (A) when the rotary case (34) rotates up to
The seedling removal claw (23) is moved in 2), and the fixed cam and the driven cam (45) slide from the state of FIG.
When the rotary case (34) rotates to the state of (4), the seedling removal claw (23) is moved along the seedling descending locus (A3), and a more appropriate movement locus than the seedling tray (22) of the seedling mounting table (21). It is configured to take out a seedling (N) by the seedling take-out nail (23) along (A).

As described above, the rotary case (34) is formed by using the two sun gears (38a) and (38b) as switching gears for the sun gear (38) between the case drive shaft (37) and the drive cam shaft (48). ) During one rotation of seedling removal claw (2
The swinging speed ratio of 3) is provided so as to be switchable, and the seedling picking claw (23) for taking out the seedling (N) from the seedling tray (22) of the seedling mounting table (21) by simple switching of the sun gear (38). The movement trajectory (A) can be adjusted and set to an appropriate trajectory,
Seedling accuracy can be improved.

[0020]

As is apparent from the above embodiments, the present invention provides two sets of two seedlings each having two sets of seedling removal claws (23) that are 180 degrees out of phase during one rotation of the rotary case (34). Seedling removal unit (1) for removing seedlings from seedling platform (21)
6) and using an intermittent gear for a transmission gear system (38) between the case drive shaft (37) and the pawl swing shaft (48) in the rotary case (34).
Since the swinging operation of the seedling extraction claw (23) is temporarily stopped during one rotation of 4), the seedling extraction claw (2) as in the related art is temporarily stopped.
3) The seedling guide and the regulating spring for forcibly changing the seedling picking position are made unnecessary, and the seedling picking claw by the intermittent gear (23).
When the swing of the seedling is stopped, the seedling extraction claw (23) is rotated integrally with the rotary case (34) to form a return locus (A4) from the seedling extraction position to the seedling extraction position of the seedling extraction nail,
With a simple seedling removal nail structure, a good seedling removal movement locus (A) is obtained to improve the seedling removal accuracy.

In addition, a non-constant gear is used for the transmission gear system (39) (40) between the case drive shaft (37) and the pawl swing shaft (48), and the rotary case (34) rotates during one rotation. Since the speed ratio of the swinging motion of the seedling removal claw (23) is continuously changed, the rotation speed of the rotary case (34) and the swinging speed ratio of the seedling removal claw (23) by the non-constant gear are changed. With the combination of changes, the seedling removal locus (A1) from the time when the seedling removal claw (23) enters the seedling tray (22) of the seedling mounting table (21) to the time when the seedling (N) is properly removed can be easily obtained. Thus, it is possible to perform an accurate and reliable seedling collecting operation.

Further, the case drive shaft (37) is connected to a transmission gear system (38) between the swing shaft (48) and a switching gear (38).
a) Using (38b), one of the rotary cases (34)
Since the swinging speed ratio of the seedling removal claw (23) during rotation is provided so as to be switchable, the seedling removal claw (23) for removing the seedling (N) from the seedling tray (22) of the seedling mounting table (21). The movement locus (A) can be adjusted and set to an appropriate one, and the seedling collecting accuracy can be improved.

[Brief description of the drawings]

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

FIG. 2 is an overall plan view of the transplanter.

FIG. 3 is a side view of an implanted part.

FIG. 4 is an explanatory plan view of a transplant portion.

FIG. 5 is an explanatory diagram of seedling removal of a seedling removal nail.

FIG. 6 is an explanatory sectional view of a seedling removal nail.

FIG. 7 is an explanatory view of an opening / closing cam unit.

FIG. 8 is an explanatory view of a drive gear portion of the seedling removal claw.

FIG. 9 is an explanatory diagram of a locus of movement of a seedling removal nail.

FIG. 10 is an explanatory diagram of a movement locus of a seedling removal nail.

FIG. 11 is an explanatory diagram of a movement locus of a seedling removal nail.

FIG. 12 is an explanatory diagram of a seedling extraction claw having a switching gear portion.

FIG. 13 is an explanatory diagram of a switching gear unit.

FIG. 14 is an explanatory diagram of the operation of the opening / closing cam unit.

FIG. 15 is an explanatory diagram of a locus of movement of a seedling removal nail.

[Explanation of symbols]

 (16) Seedling supply device (seedling take-out part) (21) Seedling table (23) Seedling removal claw (34) Rotary case (37) Drive shaft (38) (39) (40) Gear (38a) (38b) Gear (Switch gear)

Continued on the front page F term (reference) 2B060 AA06 AC02 AD07 AE01 BA03 BA09 BB05 CA07 CB06 CB17 CC05 2B065 AA01 AB07 AC06 AC07 BB14 BB23 3J009 DA20 EA04 EA11 EA21 EA32 EA44 EB01 FA06 FA30 3J062 AA13 AB06 AC06

Claims (3)

[Claims] The present invention further comprises a seedling take-out part for taking out two seedlings per row from a seedling mounting table by means of a pair of seedling take-out claws which differ in phase by 180 degrees during one rotation of the rotary case. The case drive shaft is provided such that an intermittent gear is used in a transmission gear system between the case drive shaft and the nail swinging shaft to temporarily stop the swinging operation of the seedling extracting claw during one rotation of the rotary case. Vegetable transplanter. 2. A variable speed gear is used for a transmission gear system between a case drive shaft and a nail swinging shaft to continuously change a swinging speed ratio of a seedling extracting nail during one rotation of a rotary case. The vegetable transplanter according to claim 1, wherein the vegetable transplanter is provided so as to cause the vegetable transplant. 3. The method according to claim 1, wherein a switching gear is used as a transmission gear system between the case drive shaft and the swinging shaft, so that the speed ratio of the swinging of the seedling picking claw during one rotation of the rotary case is switchably provided. The vegetable transplanter according to claim 1 or 2,