JPH0360445B2 - - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION (Field of Industrial Application) The present invention relates to a seedling supply mechanism of a lock seedling transplanter that automatically transplants block seedlings into a ridge.

(Prior art) As a conventional transplantation machine of this type, there is a
There is one disclosed in Publication No. 190302. In this prior art, a swinging frame that moves up and down reciprocally by a crank rotation shaft and a swinging arm is provided with a seedling receiver that receives unit block ridges from a seedling supply device, and a seedling receiver is provided at the bottom of the seedling receiver. Between the opening/closing part and the crank rotating shaft, there is a spring mechanism that normally springs to open the implanted opening/closing part, and a predetermined spring mechanism that moves in conjunction with the crank rotating shaft to move the swinging frame from the upward stroke to the downward stroke. Within this range, a cam mechanism is provided to forcibly close the implanted opening/closing part against the above-mentioned elastic force.

The seedling feeding device is provided with expandable clamping plates on the left and right sides of a downwardly inclined receiving plate on which block seedlings are placed,
It is constructed so that the block seedlings at the tip of the receiving plate are pushed out using one of the clamping plates.

(Problems to be Solved by the Invention) In the prior art, the block seedlings are allowed to slide down on the receiving plate and are not forcedly fed, so it is difficult to expect a reliable supply. Since the sliding direction and the direction of extrusion to the seedling receiver are perpendicular to each other, the seedlings in the waiting block that follow are pressed against the seedlings in the supply block, making it difficult to supply the seedlings.

(Means for Solving the Problems) In view of the problems of the prior art, the present invention supplies block seedlings 2 using a belt conveyor 26, and provides a stopper 28 and a stopper provided on the front end side of the belt conveyor 26. An actuation mechanism 43 is used to reliably supply seedlings one by one in synchronization with the movement of the seedling receiver 5.

The specific configuration of the problem solving means in the present invention is as follows:
A feeding mechanism 3 for block seedlings 2, a seedling receiver 5 for guiding and releasing the block seedlings 2 supplied from the feeding mechanism 3 into the ridges 4, and a reciprocating movement of the seedling receiver 5 from the block seedling receiving position to the releasing position. drive mechanism 6
and a mobile body 10 supporting the supply mechanism 3 and the drive mechanism 6, wherein the supply mechanism 3 is a belt on which the block seedlings 2 are placed and fed faster than the seedling receiving speed of the seedling receiver 5. A conveyor 26, a stopper 28 for regulating the supply of block seedlings 2 at the front end side of the belt conveyor 26, and a stopper 28 for regulating the supply of block seedlings 2 at the front end side of the belt conveyor 26, and a stopper 28 for supplying one block of seedlings 2 in synchronization with the movement of the seedling receiver 5, and then supplying subsequent block seedlings 2. A stopper operating mechanism 43 that operates the stopper 28 to stop the stopper 28.
It is characterized by having the following.

(Function) The block seedlings 2 are placed and conveyed on the belt conveyor 26, and delivered to the seedling receiver 5 from the front end thereof. The belt conveyor 26 conveys the seedlings faster than the receiving speed of the seedling receiver 5, that is, the seedling planting speed, and the supply of block seedlings is regulated by a stopper 28 provided at the front end of the belt conveyor 26. The stopper 28 is operated by the stopper operating mechanism 43 in synchronization with the movement of the seedling receiver 5 to stop the supply of blocked seedlings, and when released, only one blocked seedling is transferred to the seedling receiver 5. guaranteed supply.

(Example) Hereinafter, an example of the present invention will be described based on the drawings.

In FIGS. 1 to 6, a transplanter 1 is a block tube 2.
a feeding mechanism 3, a seedling receiver 5 that receives block seedlings 2 from the feeding mechanism 3 and transplants them into the furrow 4, and a drive mechanism 6 that reciprocates the seedling receiver 5 between the feeding mechanism 3 and the furrow 4. and an opening/closing lid 7 provided at the bottom of the seedling receiver 5.
A mobile body 10 that supports these mechanisms 3, 6, and 8 and has drive wheels 9 is provided.

The mobile body 10 has a shaft support 1 on a frame 12.
3 is fixed, and the axle 1 of the drive wheel 9 is fixed to this shaft support 13.
A shaft support rod 15 is swingably extended rearward from the axle 14, and a tail wheel 1 is attached to the rear end of the shaft support rod 15.
6 is provided, and this pivot rod 15 and frame frame 12
A height adjustment rod 17 is provided between the two. Reference numeral 18 denotes a handle projecting rearward and upward from the frame 12. A motor 20 (or engine) and a battery of the drive mechanism 6 are mounted on the front part of the frame 12.
A drive shaft 21 is supported at the center, and power is transmitted from the motor 20 via a winding transmission means 22. The motor 20 also has a winding transmission means 23.
The wheels 9 are driven through. Note that the axle 14 may transmit power via the drive shaft 21.

The supply mechanism 3 is supported at the rear upper part of the frame 12, and is connected to a belt conveyor 2 to which power is transmitted from the drive shaft 21 via a winding transmission means 24.
It has 6.

The belt conveyor 26 is capable of loading and transporting the block seedlings 2, and is inclined slightly downward in the front, and behind and on the sides thereof, a seedling stand 27, which is also inclined downward in the front, is arranged. A large number of block seedlings 2 grown on a seedling stand 27 and a seedling raising box are placed, and a worker takes the block seedlings 2 from the seedling stand 27 and places them on the belt conveyor 26 artificially and randomly. still,
It is possible to arrange the block seedlings 2 in a line on the seedling stand 27 and automatically distribute them onto the belt conveyor 26 using an extrusion mechanism. It is also possible to configure so that the whole box is placed.

A pair of left and right stoppers 28 are provided at the front upper part of the belt conveyor 26 to guide and stop the movement of the block seedlings 2. In Figures 2 and 6,
The left and right stoppers 28 are supported by a pair of left and right mounting plates 29 which are fixed to the frame frame 12 so as to be able to adjust the interval therebetween, via front and rear rods 30 and 31, so as to be slidable in the left and right direction. The front and rear rods 30, 31 are provided with springs 32, 33 for returning to their positions.

The distance between the front portions of the left and right stoppers 28 is gradually narrowed, and the block seedling 2 moves while pushing the left and right stoppers 28 apart against the spring 32. As a result, the block seedlings 2 are aligned and guided.

A guide rod 34 is protruded from one side of the mounting plate 29, and a sliding cam 3 is attached to the guide rod 34.
A push plate 36 fixed to 5 is fitted to guide linear movement. This pushing plate 36 has a pushing member 3 facing the front rod 30 of one stopper 28.
7 is attached via a nut 38 so that the facing position can be freely adjusted.

A fixed cam 41 and the sliding cam 35 are provided on the rotating shaft 40 at the front of the belt conveyor 26. Both cams 35, 41 have inclined cam surfaces 42 facing each other. 41 rotates, the sliding cam 35 slides on the rotating shaft 40 in the left-right direction A, and brings the pushing member 37 into contact with the front rod 30 via the pushing plate 36. This allows the front rod 30
There is no escape, and the stopper 28 cannot slide.
Block seedling 2 will be stopped.

The speed at which the belt conveyor 26 conveys the block seedlings 2 is set faster than the planting speed, that is, the speed at which the seedling receiver 5 receives the block seedlings 2, and the stopper 28 acts to stop the block seedlings 2. The speed is synchronized with the seedling receiver 5, and at the same time when one block seedling 2 is supplied to the seedling receiver 5, the stopper 28 is activated to stop the movement of the subsequent block seedlings, and then the seedling receiver is fed. The block seedlings are held on the belt conveyor 26 until the cylinder 5 comes to receive them.

The pair of cams 35 and 41, the pushing plate 36, the pushing member 37, and the spring 39 for returning the sliding cam 35
A stopper operating mechanism 43 for deactivating the stopper 28 is constructed by the above.

The stopper operating mechanism 43 has the left and right stoppers 2
8 is always kept in a blocked seedling state, and one of the stoppers 28 is configured to be opened and expanded by a tension member provided on the pushing plate 36, or the left and right sides are simultaneously opened and expanded via a link mechanism. It can also be configured as follows. Further, the drive shaft 21
A crank arm 46 is rotatably attached to the crank arm 46, and a swinging rod 47 is pivotally supported in front of the crank arm 46. has been done.

A seedling receiver 5 is attached and supported at the rear end of the support rod 48. The seedling receiver 5 has a cylinder body 5a which is triangular in side view, rectangular in rear view, and U-shaped in cross section, and an opening/closing lid 7 forming a front wall of the cylinder body 5a.

The cylinder body 5a has an upwardly expanding guide portion 5b at the top.
The lower end has a serrated portion 5c for facilitating entry into the soil, and has a shaft 49 near the upper portion thereof. The opening/closing lid 7 is formed of a spring plate or an iron plate, is pivotally supported by the shaft 49, and can freely open and close the lower part of the seedling receiver 5 by rotating it, and by closing the lower part of the seedling receiver 5. It is possible to hold block seedlings 2 inside, and by opening it, the seedling receiver 5 becomes a rectangular tube with a square cross section that penetrates the top and bottom, and the held block seedlings 2 fall into the ridge 4 and are supplied. be able to. Since the opening/closing lid 7 is opened slowly, the block seedlings inside slide down gently and do not fall so suddenly that their posture changes.

One end of an opening/closing rod 51 is connected to the front surface of the opening/closing lid 7, and the other end of this opening/closing rod 51 is slidably passed through a pivot shaft 52 provided in the middle of the swinging rod 47, and a spring is attached to the opening/closing rod 51. 53, it is always pressed in the closing direction.

A swing regulating body 54 (nut) whose position is freely adjustable is provided on the other end side of the opening/closing rod 51, and restricts the sliding of the opening/closing rod 51 beyond a certain level so that the cylinder body 5a of the seedling receiver can be moved to the pivot 52. When the opening/closing rod 51 leaves the opening/closing lid 7 at a certain distance or more, the opening/closing rod 51 prevents the opening/closing lid 7 from moving further and opens the opening/closing lid 7 relatively.
is configured.

The crank arm 46 is driven clockwise in FIG. 1, and this direction of rotation is the same as the forward rotation of the drive wheel 9. Due to this rotation of the crank arm 46, the lower part of the seedling receiver 5 is vertically elongated. The lower part of the elliptical trajectory B enters into the ridge 4, and the moving aircraft 10 descends from above to below in the ridge. After the entry is completed, it gradually moves backward and upward.

The elliptical trajectory B is the trajectory of the seedling receptacle 5 when the mobile body 10 is stopped. If it moves forward by a distance S, the direction of movement is opposite and the speeds are equal, so the seedling receiver 5 does not move forward or backward with respect to the ridge 4, but only moves up and down approximately vertically at the entry position. However, this is effective when the seedling receiver 5 is a rectangular tube up to the bottom, and the structure must be such that the lower surface of the rectangular tube can be opened with an opening/closing lid to release the block seedlings 2. However, if the seedling receiving tube 5 is an inverted triangle as in this embodiment, the block seedlings cannot be released unless the tube body 5a is separated from the opening/closing lid 7 by a distance L.
0 moves by a distance S, the seedling receiver 5 is moved by a distance L.
Set the speed difference so that it moves by Moving the seedling receiver 5 by the distance L pushes the mobile body 10 in the forward direction C, and does not become a resistance to the planting work.

When the seedling receiving cylinder 5 reaches the upper end position (seedling receiving position) of the elliptical path B, it comes closest to the front end of the belt conveyor 26 and can receive fallen seedlings, but the delivery of the block seedlings 2 is made more reliable. A seedling guide member 56 is provided for this purpose.

As shown in FIG. 4, the seedling guide member 56 is rotatably supported at its upper part by a gate-shaped frame 57 erected on the frame frame 12 via a horizontal shaft 58 whose vertical position is adjustable. As shown in FIG. 1, a spring 59 provided at the spring 58 and a stopper 61 provided at the gate frame 57 allow one block seedling 2 to be held between them with respect to the belt conveyor 26. The block seedlings 2 held between the seedlings 2 and the belt conveyor 26 fall by rotating elastically downward.

An engagement piece 60 is protruded from the lower surface of the seedling guide member 56, and this engagement piece 60 can be engaged with the end of the support rod 48 above the seedling receiver 5 that has moved upward. When engaged, the support rod 48 rotates the seedling guide member 56 downward, and the seedling receiver 5 receives the block seedlings 2 that slide down on the seedling guide member 48.

In addition, since the transplanter 1 needs to drive only the drive wheel 9 when carrying it into and out of the field, the drive shaft 21
The power transmission system to the axle 14 and the power transmission system to the axle 14 are each provided with a power disconnection clutch. Further, the clutch for the drive shaft 21 may include a fixed position disconnection clutch that is disconnected when the seedling receiver 5 is not present in the furrow (for example, as shown in Japanese Patent Publication No. 44-25606, which is a known technique). It is preferable to apply a rice transplanter stopping device.

Further, the transplanting machine 1 can be configured to include a plurality of sets of belt conveyor 26, seedling receivers 5, etc., so as to perform double or triple planting at the same time, or staggered planting. A soil covering device may be provided on the pivot rod 15 or the frame 12 to supply covering soil to the block seedlings 2 after planting. Furthermore, the seedling guiding member 56 and the stopper 28 are configured to be interlocked via a link mechanism or a solenoid, so that the seedling guiding member 56 is interlocked with the upward movement of the block seedling 2 after it has fallen. Alternatively, the stopper 28 may be deactivated to supply one block of seedlings.

The transplanting machine 1 having the above structure is particularly suitable for planting block seedlings 2 such as lettuce or Chinese cabbage in the ridges 4 covered with multi-film.

The working operation is to move the transplanter 1 forward in the direction of arrow C while straddling the ridge 4, and at the same time, the worker places the block seedlings 2 on the belt conveyor 26 as appropriate. The block seedlings 2 are guided and held by a stopper 28 at the tip of the belt conveyor 26, and when the movable cam 35 moves back the pushing member 37 to make the stopper 28 freely openable and expandable, the stopper 28
The belt conveyor 26 and the seedling guide member 5 are pushed away.
6. Thereafter, the stopper 28 is operated by the stopper operating mechanism 43 to stop the supply of subsequent block seedlings 2 on the belt conveyor 26 and to hold the block seedlings behind it.

Crank arm 4 rotating in the same direction as drive wheel 9
6, when the seedling receiving tube 5 moves in a pseudo-elliptical trajectory B and reaches the upper receiving position, the support rod 48 engages with the engaging piece 60 and moves the seedling guide member 56 downward. , the block seedlings 2 held by it slide down into the seedling receptacle 5. At this time, since the block seedlings slide on the seedling guide member 56, their posture at the time of feeding remains normal and stable, and they are protected from breaking.

The seedling receiver 5 that has received the block seedlings moves downward, and its lower part breaks through the mulch film and forms the ridge 4.
rush into. From around this time, the sliding regulating body 54 of the opening/closing rod 51 comes into contact with the pivot 52 and restrains the movement of the opening/closing lid 7. On the other hand, the cylinder body 5a is the mobile body 10.
The seedling receptacle 5 moves further backwards, and the lower part of the seedling receptacle 5 is opened, releasing the block seedlings 2 that it was holding into the ridge 4.

While the seedling receiver 5 is entering the ridge 4, the mobile body 1
0 has moved forward by approximately a distance S, and the position of the seedling receiver 5 with respect to the ridge 4 has hardly changed, leaving only the block seedlings 2 and moving upward. Therefore, only the square holes can be punched in the multi-film, and it will not be deformed or caught and torn.

After planting, the seedling receiver 5 opens and closes the lid 7 while moving upward.
is closed by the action of the spring 53, and the block seedling can be delivered.

(Effects of the Invention) According to the present invention described in detail above, the block seedlings 2 are supplied to the seedling receiver 5 by the belt conveyor 26, so that the seedlings can be supplied forcibly and reliably, and the stopper actuating mechanism 43 As a result, the stopper 28 is activated to stop the supply of the subsequent blocks of seedlings, so that the preceding block of seedlings can be delivered to the seedling receiver 5 without being affected by the following ones, and the belt conveyor 26 can transfer the seedlings to the seedling receiver 5. Since the block seedlings are transported faster than the seedling receiving speed, the block seedlings can be held at the stopper 28, and even if the block seedlings are placed randomly on the belt conveyor 26, the supply of seedlings can be ensured. .

[Brief explanation of drawings]

The drawings show an embodiment of the present invention; Fig. 1 is an overall side view, Fig. 2 is an overall plan view, Fig. 3 is a side view of main parts showing the state when entering the ridge, and Fig. 4 is a seedling guide. FIG. 5 is a perspective view of the plate, FIG. 5 is a perspective view of the seedling receiver and drive mechanism, and FIG. 6 is an enlarged plan view of the supply mechanism. DESCRIPTION OF SYMBOLS 1... Transplanter, 2... Block seedling, 3... Feeding mechanism, 4... Ridge, 5... Seedling receiver, 6... Drive mechanism, 7... Opening/closing lid, 8... Opening/closing mechanism, 9... ... Drive wheel, 10 ... Mobile body, 26 ... Belt conveyor, 27 ... Seedling stand, 28 ... Stopper, 29 ...
...Mounting plate, 35...Sliding cam, 37...Press member,
41...Fixed cam, 43...Stopper operating mechanism.

Claims (1)

[Scope of Claims] 1. A feeding mechanism 3 for block seedlings 2, a seedling receiver 5 for guiding and releasing the block seedlings 2 supplied from the feeding mechanism 3 into the ridges 4, and a seedling receiver 5 for receiving block seedlings. In the block seedling transplanter, which has a drive mechanism 6 that reciprocates from a position to a release position, and a moving body 10 that supports the supply mechanism 3 and the drive mechanism 6, the supply mechanism 3 places the block seedlings 2 on the seedlings. A belt conveyor 26 that feeds the seedlings faster than the seedling receiving speed of the receiving tube 5, a stopper 28 that regulates the supply of block seedlings 2 at the front end side of the belt conveyor 26, and a stopper 28 that controls the supply of block seedlings 2 in synchronization with the movement of the seedling receiving tube 5. A stopper operating mechanism 43 that operates the stopper 28 to stop the supply of the subsequent block seedlings 2 after being supplied.
A seedling supply mechanism of a block seedling transplanter, characterized in that it has the following.