JPS61209511A - Block seedling transplanter - Google Patents

Abstract

(57) [Summary] This bulletin contains application data before electronic filing, so abstract data is not recorded.

Description

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

(Prior art) As a conventional transplantation machine of this type, Japanese Patent Application Laid-Open No. 58-1903
There is one disclosed in Publication No. 02. This conventional technology is
A seedling receiver for receiving unit block ridges from a seedling supply device is provided on a swinging frame that moves up and down reciprocally by a crank rotating shaft and a swinging arm lever, and a planting opening/closing part at the bottom of this seedling receiver and the above-mentioned crank are provided. Between the rotating shaft and the spring mechanism, there is a spring mechanism that normally springs to open this implanted opening/closing part, and a spring mechanism that is interlocked with the crank rotating shaft and is connected to the above-mentioned spring mechanism within a predetermined range from the upward stroke to the downward stroke of the swing frame. It is configured with a cam mechanism that forcibly closes the implanted opening/closing part against elastic force.

The rotation direction of the crank rotation shaft is opposite to the rotation direction of the drive wheel of the transplanter, and the rotation locus of the planting opening/closing part at the bottom of the seedling receiver is approximately crescent-shaped, and descends forward into the furrow. rush into.

(Problems to be Solved by the Invention) In the above-mentioned prior art, the lower part of the seedling receptor moves forward into the furrow in a nearly crescent-shaped trajectory, and the forward movement of the transplanter also adds to the movement of the seedling receptor. The lower part has to move forward a long distance in relation to the ridge from the start to the completion of plunging, creating a hole several times larger than the block seedling to be transplanted, which makes it difficult to take root, and the resistance from above the ridge is large, making it difficult to carry out the work. It was difficult to improve performance.

(Measures to Solve the Problem) The present invention solves the problems of the prior art by rotating the crank arm 46 that drives the seedling receiver 5 in the same direction as the drive wheel 9. The seedling receiver 5 is moved in and out approximately perpendicularly to the ridge 4 by moving the lower part of the 1t15 in a substantially elliptical trajectory B and moving in the direction opposite to the forward direction of the moving body 10 in the ridge 4. By configuring it in this way, all of the problems can be solved.

That is, the specific configuration of the problem solving means in the present invention includes: a feeding mechanism 3 for block seedlings 2; and a seedling receiver 5 having an opening/closing lid 7 at the bottom and receiving block seedlings 2 supplied from the feeding mechanism 3. and; A drive that has a support rod 48 that supports the seedling receiver 5, a crank arm 46 connected to the support rod 48, and a swing rod 47, and moves the lower part of the seedling receiver 5 up and down to the middle of the ridge 4. a mechanism 6; a lid opening/closing mechanism 8 that opens the opening/closing lid 7 when the lower part of the seedling tray wi5 enters the ridge 4; 9, the drive mechanism 6 rotates the lower part of the seedling receiver 5 in a substantially elliptical shape with respect to the moving machine 10, and rotates the lower part of the seedling receiver 5 in a substantially elliptical trajectory B. The lower part is characterized in that the crank arm 46 is rotated in the same direction as the drive wheels 9 in order to move in the direction opposite to the forward direction of the mobile body 10 in the ridge 4.

(Function) A crank arm 46 is attached to the support rod 48 that supports the seedling receiver 5.
and a swinging rod 47, and when the crank arm 46 rotates in the same direction as the drive shaft 9, the lower part of the seedling receiver 5 rotates vertically in a long approximately elliptical trajectory B; The lower part of the trajectory B enters into the ridge 4, and the seedling receiver 5 is moving in the opposite direction to the forward direction with respect to the moving body 10. Since the moving body 10 is moving forward, its moving speed and If the moving speed of the lower part of the seedling receiver 5 is equal, the seedling receiver 5 will not move in the front-back direction with respect to the ridge 4, but will only move up and down, and even if there is a slight speed difference, the seedling receiver 5 will The seedlings enter and exit the furrow 4 approximately vertically, and the lid opening/closing mechanism 8 is activated in the state where the seedlings enter and exit the furrow 4, releasing the hemlock seedlings 2 into the furrow.

(Example) Embodiments of the present invention will be described below with reference to the drawings.

In FIGS. 1 to 6, a transplanter 1 includes a feeding mechanism 3 for block cylinders 2, a seedling receiver 5 for receiving block seedlings 2 from the feeding mechanism 3 and transplanting them into the ridges 4, and a feeding mechanism for feeding the seedling receiver 5. A drive mechanism 6 that reciprocates between the seedling tray 3 and the ridge 4, a mechanism 8 that opens and closes the opening/closing lid 7 provided at the bottom of the seedling receiver 5, and a drive wheel 9 that supports these mechanisms 3.6.8. A mobile aircraft 10 having
It is equipped with

The movable body 10 has a shaft support 13 fixed to a frame 12, an axle 14 of a drive wheel 9 supported on the shaft support 13, and a shaft support rod 15 swingably extended rearward from the axle 14. , a tail wheel 16 is provided at the rear end of this shaft support rod 15, and this shaft support rod 1
A height adjustment rod 17 is provided between 5 and the frame 12. The motor 20 (or engine) and battery of the drive mechanism 6 are mounted on the front part of the frame 12, which is a handle projecting rearward and upward from the frame 12, and a drive shaft 21 is supported in the center thereof. Power is transmitted from the motor 20 via the winding transmission means 22.

Further, the motor 20 drives the wheels 9 via a winding transmission means 23. 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 has a belt conveyor 26 to which power is transmitted from the drive shaft 21 via a winding transmission means 24.

The belt conveyor 26 can place and transport the block seedlings 2,
The front is inclined slightly downward, and a seedling stand 27, which is also inclined downward in the front, is arranged behind and on the side thereof. Seedling stand 2
A large number of block seedlings 2 grown in seedling raising boxes 7 and 7 are placed thereon, and a worker takes the block seedlings 2 from this seedling stand 27 and places them on the belt conveyor 26 artificially and randomly. 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 it so that the whole seedling raising box is placed there.

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. The left and right stoppers 28 are supported by a pair of left and right mounting plates 29 that are fixed to the frame frame 12 so that the interval can be adjusted freely, via front and rear rods 30.31. A return spring 32,33 is provided.

The distance between the left and right stoppers 28 is gradually narrowed at the front.
The block seedling 2 is held against the spring 32 by the left and right stoppers 2.
Move while pushing out 8. Thereby, the block seedlings 2 are aligned and guided.

A guide loft 34 is protruded from one side of the mounting plate 29, and a pushing plate 36 fixed to a sliding cam 35 is fitted into this guide rod 34 to guide linear movement.

This pushing plate 36 has a front rod 30 of one stopper 28.
A pushing member 37 facing the is attached via a nut 38 so that the opposing position can be freely adjusted.

A fixed cam 4 is mounted on the rotating shaft 40 at the front of the belt conveyor 26.
1 and the sliding cam 35 are provided, and both cams 35
．． 41 has an inclined cam surface 42 facing each other, and when the fixed cam 41 rotates, the sliding cam 35 slides on the rotating shaft 40 in the left-right direction A, and the sliding cam 35 slides on the rotating shaft 40 in the left-right direction A. The pushing member 37 is brought into contact with the front rod 30 by pressing the button. This eliminates the escape of the front rod 30 and prevents the stopper 28 from sliding.
Block seedling 2 will be stopped.

The speed at which the belt conveyor 26 conveys the block seedlings 2 is
The planting speed is set faster than the speed at which the seedling receiver 5 receives the block seedlings 2, and the speed at which the stopper 28 acts to stop the block seedlings 2 is synchronized with the seedling receiver 5. At the same time that 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 belt the block seedlings until the seedling receiver 5 comes to receive them. It is held on the conveyor 26.

The pair of cams 35 and 41, the pushing plate 36, and the pushing member 37
and the return spring 39 of the sliding cam 35, etc.
Stopper actuation mechanism 4 for deactivating the stopper 28
3 are made up.

A crank arm 46 is rotatably attached to the drive shaft 21, and a swinging rod 47 is pivotally supported in front of the crank arm 46. is pivotally connected to.

The 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 main body 5a has an upwardly expanding guide portion 5b at the upper part,
The lower end has a serrated portion 5c to facilitate penetration into the soil, and has a shaft 49 near the top. The opening/closing lid 7 is formed of a spring plate or an iron plate, is pivotally supported on the shaft 49, and can freely open and close the lower part of the seedling receiver 5 by rotating.
As shown in the figure, the block seedlings 2 can be held inside the seedling receptacle 5 in the closed state, and the seedling receptacle 5 becomes a rectangular tube with a rectangular cross section passing through the top and bottom when it is in the open state. , the held block seedlings 2 can be dropped and supplied into the ridges 4. Since the opening/closing lid 7 is opened slowly, the block seedlings inside slide down gently and do not fall suddenly and change their posture.

One end of an opening/closing loft 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 can be freely adjusted 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 tube body 5a of the seedling receiver can be moved toward the pivot 52.
When the distance is more than a certain distance from M7, the opening/closing rod 51 opens/closes.
The lid opening/closing mechanism 8 is configured to prevent further accompanying movement of the opening/closing lid 7 and relatively open the opening/closing lid 7.

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 rotated in a vertically long direction. It will move while drawing an elliptical (pseudo-elliptical) trajectory B, and the lower part of the elliptical trajectory B plunges into the ridge 4, and descends from above to the bottom of the moving aircraft 10 in the ridge and plunges into it. After completion, 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 square tube up to the bottom, and it is necessary to configure the bottom of the square tube so that it can be opened with an opening/closing lid to release the block seedlings 2. If the seedling receiving tube 5 is an inverted triangle as in this embodiment, block seedlings cannot be released unless the tube body 5a is separated from the opening/closing lid 7 by a certain distance. , the speed difference is set so that the seedling receiver 5 is moved by a distance.Moving the seedling receiver 5 by a distance pushes the mobile body 10 in the forward direction C, and planting is a work. There will be no resistance.

When the seedling receiving tube 5 reaches the upper end position of the elliptical path B, it comes closest to the front end of the belt conveyor 26 and can receive the fallen bacteria. 56 are provided.

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. 58
As shown in FIG. 1, the spring 59 provided in the gate frame 57 and the stopper 61 provided in the gate frame 57 are arranged in a position that allows one block seedling 2 to be held between them with respect to the belt conveyor 26, as shown in FIG. The belt conveyor 26 can be rotated elastically downward.
The block seedling 2 held between the two falls.

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. By engaging, the support rod 48 rotates the seedling guide member 56 downward, and the seedling receiving tube 5
receives the block seedlings 2 sliding down on the seedling guide member 48.

In addition, since it is necessary to drive only the drive shaft 9 when carrying the transplanted body into and out of the field, a power cutoff latch is provided in the power transmission system to the drive shaft 21 and the power transmission system to the axle 14, respectively. (In addition, the clutch for the drive shaft 21 includes a fixed position disconnection latch that is disconnected when the seedling receiver 5 is not present in the furrow (for example,
It is preferable to provide a rice transplanter stopping device as shown in Japanese Patent No. 25606.

The transplanter 1 can also be configured to include a plurality of sets of belt conveyor 26 and seedling receivers 5, etc., so as to perform simultaneous planting in double rows, double rows, etc., or staggered planting.
A soil covering device may be provided on the pivot rod 15 or the frame 12, and soil may be supplied to cover the block seedlings 2 after planting.

The transplanting machine 1 having the above configuration is particularly suitable for planting block seedlings 2 such as lettuce or Chinese cabbage in the ridges 4 covered with mulch 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. When the tip of the belt conveyor 26 is guided and held by the stopper 28 and the movable cam 35 moves back the pushing member 37 to make the stopper 28 freely openable and expandable, the stopper 2
8 and is held between the belt conveyor 26 and the seedling guide member 56.

When the seedling receiver 5 moves in a pseudo-elliptical trajectory B and reaches the upper part thereof by the crank arm 46 rotating in the same direction as the drive wheel 9, the support rod 48 engages with the engagement piece 60 to guide the seedlings. The member 56 is moved down and the block seedlings 2 held by it slide down into the seedling receiver 5.

゛At this time, the block seedlings slide on the seedling guide member 56, so
The posture at the time of supply is normal and stable, and is protected from being broken.

The seedling receiver 5 that has received the block seedlings moves downward, and its lower part breaks through the mulch film and enters the ridge 4. 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 5
a moves further rearward with respect to the mobile body 10, and the seedling receiver 5
The lower part is opened and the block seedlings 2 that were being held are released into the ridge 4.

While the seedling receiver 5 enters the ridge 4, the mobile body 10 moves forward by approximately a distance S, and the position of the seedling receiver 5 with respect to the ridge 4 hardly changes, leaving only the block seedling 2 and moving upward. . Therefore, the mulch film can only be drilled with square holes, and will not be deformed or caught and seriously torn. Block seedlings are planted at a depth of approximately 1 cm from the top surface of the ridge, and can be covered with soil, and the planting position is approximately vertical. The posture of this planting is 1 with respect to the vertical.
An inclination of up to about 5° is allowed.

After planting, the seedling receptacle 5 is moved upward, and the opening/closing lid 7 is closed by the action of the spring 53, so that the block seedling can be delivered.

(Effects of the Invention) According to the present invention detailed above, the crank arm 46 is rotated in the same direction as the drive wheel 9, and the lower part of the seedling receiver 5 is rotated in a substantially elliptical shape with respect to the mobile body IO. , and in the lower part of the approximately elliptical trajectory B, the mobile body 10 is moved in the direction opposite to the forward direction of the mobile body 10 in the ridge 4.
With the forward movement of 0, the seedling receiver 5 moves in and out of the ridge 4 approximately perpendicularly, and there is not much relative movement in the front and back direction from the start of entry to the completion, and the cross-sectional area of the seedling receiver 5 is approximately The seedlings 2 can be transplanted by making as small a hole as possible, allowing the transplant to take root well, and since the seedling receiver 5 in the ridge moves in the opposite direction to the mobile body 10, The resistance received from above is also small, improving work performance.

[Brief explanation of drawings]

The drawings show an embodiment of the present invention, and FIG. 1 is an overall side view, FIG. 2 is an overall plan view, FIG. 3 is a side view of the main part showing the state when the ridge is planted, and FIG. 4 is a seedling. FIG. 5 is a perspective view of the guide plate, FIG. 5 is a perspective view of the seedling receiver and the drive mechanism, and FIG. 6 is an explanatory view showing seedling receiving and seedling release in the seedling receiver. 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, 46
...Crank arm, 48...Support rod, 51...
Opening/closing rod, 56... Seedling guide member, B... Elliptical trajectory.

Claims (1)

[Scope of Claims] 1. A feeding mechanism 3 for block seedlings 2; a seedling receiver 5 having an opening/closing lid 7 at the bottom and receiving block seedlings 2 supplied from the feeding mechanism 3; this seedling receiver; 5, a crank arm 46 connected to the support rod 48, and a swing rod 47, the drive mechanism 6 moves the lower part of the seedling receiver 5 up and down to the middle of the ridge 4; a lid opening/closing mechanism 8 that opens the opening/closing lid 7 when the lower part of the receiving tube 5 enters the ridge 4; a mobile body supporting the supply mechanism 3, the drive mechanism 6, and the lid opening/closing mechanism 8 and having a drive wheel 9; In the block seedling transplanter comprising: A block seedling transplanter characterized in that the crank arm 46 is rotated in the same direction as the drive wheel 9 so as to move in the opposite direction to the forward direction of the mobile body 10.