JPH07114575B2 - Seedling transplanter - Google Patents

Description

TECHNICAL FIELD The present invention relates to a seedling transplanter provided with a soil cover device.

[Conventional technology]

As a conventional technique of this type, there is one in which a soil covering device is provided behind a seedling planting position of the seedling planting device, as shown in JP-A-1-101808.

[Problems of the prior art] However, in the above-mentioned configuration of the prior art, after planting the seedlings in the field by the seedling planting device, the sides and the back of the seedlings are covered with soil, and then the front of the seedlings is covered with soil. The soil covering device pushes the seedlings forward and backward, which causes a so-called situation in which the seedlings are collapsed by the soil covering device.
It was impossible to plant proper seedlings.

[Technical means for solving the problem]

In order to solve the above-mentioned problems, the present invention presses up and down the field scenes on the left and right side portions of the seedling planting position B of the seedling planting apparatus 1 that moves up and down to plant seedlings in the field. The seedling transplanter is characterized in that a soil covering device 2 for covering the root of the seedling A planted in 1 is attached.

[Operation and effect of the invention]

This invention is a root part of the seedling A which is planted by the seedling planting device 1 by pressing up and down the field scenes before and after the left and right sides of the seedling planting position B of the seedling planting device 1 for vertically moving and planting seedlings in the field. Since the soil covering device 2 for applying soil is attached to the seedlings, the seedling planting device 1 is covered with soil for the seedlings A to be planted from the front and back of each of the left and right side portions of the seedling planting position B for plunging into the field. The seedlings are not pushed down by the soil cover device 2, suitable planting can be performed by a machine, the conventional problems can be solved, and the planted seedlings A grow well.

〔Example〕

A vegetable seedling transplanter according to an embodiment of the present invention will be described in detail with reference to the drawings.

Reference numeral 3 denotes a mission case. Left and right wheel transmission cases 4 and 4 facing downward are rotatably provided on both left and right sides, and left and right driving front wheels 5 and 4 are attached to axles 4a and 4a provided at the tips of the left and right wheel transmission cases 4 and 4, respectively. 5 is mounted.

Reference numeral 6 denotes a planted transmission case, which is fixedly connected to the rear portion of the transmission case 3 via a transmission case 7.

Reference numeral 8 denotes a sub-plantation transmission case, which is fixedly connected to the rear portion of the planting section transmission case 6 while inclining rearward and obliquely upward of the machine body.

Reference numeral 9 denotes a steering handle frame, the base portion of which is fixed to the upper surface of the midway portion of the sub-transplantation transmission case 8.

10 is a control handle formed in a U shape in a plan view,
It is fixed to the upper end of the steering handle frame 9.

Reference numeral 11 denotes an engine, which is directly connected to the front side of the mission case 3 via a centrifugal clutch case 12 having a built-in centrifugal clutch. When the drive shaft of the engine 11 rotates at a certain speed or more (the throttle lever 13 causes The centrifugal clutch is connected and the power of the engine 11 is transmitted to the mission case 3 when the rotation speed of the engine 11 is increased to the planting work state).

Reference numeral 14 denotes a U-shaped front frame having a base fixed to the front part of the mission case 3, and is arranged so as to protect the left and right side parts and the front part of the engine 11, and is provided in the middle thereof. The support plate 15 is welded and fixed to the support plate 15 and the engine.
The lower part of 11 is connected with a bolt.

Reference numeral 16 is a seedling mounting table, and a seedling transfer belt 17 is wound between a belt winding drive roll 18 and a belt winding driven roll 19 and stretched in the space of the bottom plate of the frame made up of left and right standing frames and front and rear bottom plates. The structure is provided, and its front and rear portions are supported by a support roller 20 provided on the upper surface of the mission case 3 and a guide rail 21 fixed to the upper part of the sub-transplantation transmission case 8, respectively.
A left and right reciprocating device 22 is provided to reciprocate in the left and right directions of the machine body.

Further, the belt winding drive roll 18 is adapted to be rotationally driven by a certain amount when the seedling placing table 16 reaches the left and right lateral movement ends by an appropriate driving mechanism, and the seedling transfer belt 17 is a seedling placing belt. Stand
A certain amount when 16 moves to the left and right (only one seedling width)
The seedling A that has been rotated and placed on the seedling placing table 16 is placed in the following seedling receiving frame 23.
Is configured to be transported to.

The seedling receiving frame 23 is located on the rear end side of the seedling mounting table 16 and is attached to the upper surface of the transmission case 8 with sub-planting, and a seedling take-out port is provided at the left and right central portions.

Reference numeral 24 denotes a seedling receiving rod made of a rod, which is fixed to the horizontal plates 25 provided between the left and right standing frames of the seedling mounting table 16 above the seedling receiving frame 23 at the same intervals and has a comb-shaped lower end. It is open and this seedling receiving rod
Each of 24 ... Is provided so as to support the rear side of the pot container for each one of the vegetable seedlings A. In addition, the seedling planting fixed claw 1b and the seedling planting movable claw 1c, which will be described later, are engaged with each other so that the seedling receiving rod 24 is sandwiched therebetween so as to hold one seedling A (one pot pot container) in a divided manner. Operate.

1 is a seedling planting device, which is a box-shaped seedling plant body with a hollow inside.
Two seedling planting nails, a seedling planting fixed nail 1b and a seedling planting movable nail 1c, and a seedling pushing tool 1d are attached to 1a, and an operating mechanism of the seedling planting movable nail 1c is provided inside the seedling planting tool body 1a. The operation of holding the seedling A or conversely separating the held seedling A is performed. The seedling pushing tool 1d is configured to move downward at the same speed as the rising speed of the seedling planting nails 1b and 1c from the moment the seedling planting nails 1b and 1c release the held seedling A. , From the position where the seedling A is planted in the field with the seedlings 1b and 1c.
Even if 1c moves up, it doesn't move.

Then, the main body 1a of the seedling planting device 1 is pivotally attached to the first rotating case 26, the first rotating case 26 is pivotally attached to the second rotating case 27, and the seedling planting claws 1b and 1c of the seedling planting device 1 are attached. The transmission mechanism is built in the first rotating case 26 and the second rotating case 27 so that the locus P drawn by the tip of the is narrow in the front-rear direction and long in the up-down direction, and the base of the second rotating case 27 is sub-planted. Transmission case 8
Is pivoted on.

Reference numeral 28 denotes a hydraulic device whose front portion is fixed to the upper surface of the transmission case 7, and a piston 30 is configured to extend and retract with respect to the hydraulic cylinder 29 in the machine longitudinal direction.

31 is a compression spring 32 at the rear end of the piston 30 only within a certain range.
It is a sliding body that is fitted so as to slide against.

The reference numeral 33 designates a balance rod which is pivotally supported by the pivot 31 at the right and left central position thereof by means of a pivot pin 34, and the left and right side portions thereof are respectively constituted by the left and right wheel transmission cases 4, 4 by left and right rods 35, 36, respectively. It is connected to the upper ends of the left and right arms 37 and 38, which are integrated with 4.

39 and 40 are left and right rear wheels provided at the rear of the left and right wheels 5 and 5 at the rear of the machine body, and both left and right sides of a support pin 42 fixed to a support frame 41 fixed to the rear lower surface of the transmission case 7. Each of the rear wheel support arms 43 and 44 is rotatably pivotally supported on the lower end portion of the rear wheel support arm 43, 44 so as to be freely rotatable. The upper ends of the rear wheel support arms 43 and 44 are connected to the left and right sides of the balance rod 33 by connecting rods 45 and 46, respectively.

However, the left and right wheels 5 and 5 and the left and right rear wheels 39 and 40 all move up and down at the same time when the piston 30 of the hydraulic device 28 retreats, and the balance rod 33 rotates around the pivot pin 34. The left and right wheels are configured to move up and down in a contradictory manner.
The left and right wheels 5, 5 and the left and right rear wheels 39, 40 are set so as to straddle one ridge C.

Reference numeral 71 is a sensor for detecting a field scene (upper surface of the ridge C) in front of the seedling planting position B of the seedling planting apparatus 1, and the left and right support shafts 51, 51 are formed at the rear end of the sensor arm 50 formed in a U shape in plan view. It is composed of left and right sensor rollers 71a, 71a pivotally supported at 51, and the ground surface of the left and right sensor rollers 71a, 71a is made of a relatively soft material made of synthetic resin such as sponge. . The front portion of the sensor arm 50 is rotatably supported by a pivot shaft 53 at the tip of a support arm 52 integrally extended from the support frame 41.
54 is an arm whose lower end is welded and fixed to the upper surface of the front end of the sensor arm 50, and its upper end is connected to a switching spool 56a of a hydraulic valve 56 by a rod 55. When the sensor 71 moves upward in the direction b, the hydraulic valve
The switching spool 56a of 55 is switched to the hydraulic cylinder 29.
The hydraulic pump 57 is supplied with pressure oil therein, and the hydraulic piston 30 extends so that the wheels 5, 5, 39, 40 move downward. On the contrary, when the sensor 71 moves downward in the opposite direction, the switching spool 56a of the hydraulic valve 55 is switched to release the pressure oil in the hydraulic cylinder 29 and the hydraulic piston 30 retreats, so that the wheels 5, 5, 39/40 is configured to move up. Reference numeral 58 is a tension spring provided between the support arm 52 and the arm 54 so that the sensor 71 contacts the upper surface of the ridge C.

Reference numeral 2 denotes a crusher, which is rotatably supported by a shaft 82 fixed to a lower end of a support plate 81 fixed to the planting part transmission case 6.
A boss 84, which is integral with, is pivotally supported, and an operating rod 85 is fixed to the support arm 83. A screw portion 86 is formed on the actuating rod 85. With the screw portion 86 penetrating the front and rear soil cover bodies 87 and 88 at their distal ends, the screw rod 86 is used to attach the front and rear soil cover bodies 87 and 88 to the screw portion 86. It is fixed. Then, the front and rear soil cover 87/88 has a ball 90/90 made of hard resin at the rear end thereof by means of pivot pins 91/91,
It is pivotally supported.

Reference numeral 92 is a driven arm fixed to the boss 84.

Reference numeral 93 is a drive cam fixed to the constant rotation shaft 94 provided in the planting section transmission case 6. Reference numeral 95 denotes a U-shaped drive arm in plan view, which is rotatably supported on a support plate 81 by a shaft 96, and one side 95 'of the drive arm is extended to a long end, and a driven cam composed of a shaft at its tip. 97 is provided, and the driven cam 97 is engaged with the drive cam 93 so that the drive arm 95 swings in the hate direction. The drive arm 95 has a shaft 95L
5R is fixedly installed, and the shafts 95L and 95R and the left and right driven arms 92 and 92 are connected by connecting rods 98 and 98. Reference numeral 99 denotes a coil spring, one end of which is locked to the support plate 81 and the other end of which is locked to the drive arm 95 to urge the drive arm 95 to rotate in the direction.

However, when the drive cam 93 rotates, it engages with the driven cam 97,
The drive arm 95 is rotated in the direction of T by the urging force of the winding spring 99. Then, the left and right front and back soil cover bodies 87 and 88 of the soil cover device 2 move up and down via the left and right connecting rods 98 and 98, and the fields 90 on both left and right sides of the planted seedlings are directed toward the seedlings 90. And press to cover the seedlings with soil. In addition, when the front and rear soil cover bodies 87 and 88 of the soil cover device 2 come to the front and rear positions on the side of the seedling to be planted, the front and rear soil cover bodies 87 and 88 move downward and press the field on the side of the seedlings. As described above, the drive cam 93 is set to rotate in synchronization with the vehicle speed and the seedling planting device 1. Also,
The front and rear soil cover bodies 87, 88 adjust the position of the actuating rod 85 with respect to the screw portion 86 of the actuating rod 85 by tightening the bolts 89 ... again by loosening the bolts 89. You can

Reference numeral 59 denotes a planting clutch lever, which is configured so that the seedling placing table 16 and the seedling planting device 1 can be operated or stopped by swinging back and forth.

Reference numeral 60 denotes a hydraulic operation lever, which is configured so that the front wheel can be moved up and down by manually switching the switching spool 56 of the hydraulic valve 55.

Reference numerals 61 and 62 are left and right side clutch levers for turning on and off the left and right side clutches of the left and right wheels 5 and 5 provided on the left and right wheel transmission cases 6 and 6, respectively. 100 is a ground plate,
It is provided in order to flatten the small swelling of the soil formed at the corners of the ridge C when the ridge C is formed by the ridger.

Next, the case of transplanting seedlings with the above-mentioned seedling transplanter in a field where the mulch film D is laid on the entire surface is explained. Left and right wheels 5.5 and rear wheels 39 and 40 of the seedling transplanter are the ridges C of the field.
The machine body was set so as to straddle the seedlings, and pot-shaped vegetable seedlings A were cultivated by a paper-made seedling device in which pot containers were vertically and horizontally arranged at predetermined intervals on the seedling placing table 16 and stored. After that, when the engine 11 is started and the throttle lever 13 is raised from the idling speed to the seedling planting work speed, the power of the engine 11 is transmitted to the rotating parts via the centrifugal clutch and the left and right wheels 5, 5 are rotated to propel the machine body. .

At this time, when the planting clutch lever 59 is operated to the clutch on position, the seedling table 16 is reciprocally rocked in the left and right directions by the power of the engine 11 via the left and right drive mechanism, so that the seedling located on the rear end side is swayed. A is moved to the left and right while being received by the seedling receiving frame 23, and the seedling A is fed to the seedling take-out port, and the seedling planting locus P
The seedlings 1b and 1c, which are grasped by the seedlings 1b and 1c, are moved downward, and the seedlings 1b and 1c holding the seedling A in the ridge C plunge into
The seedlings 1b and 1c are separated from each other to release the seedling A, and from the moment the seedling A is released, the seedling pushing tool 1d moves downward at the same speed as the seedling planting claws 1b and 1c move upward to move the seedling A there. And transplant the seedling A.

Also, when the seedling planting depth L is about to change due to the change in the height of the ridge C, the sensor rollers 71a, 71a that come into contact with the upper surface of the ridge C and rotate freely move up and down to detect it. The switching spool 56a of the valve 56 is switched so that the planting depth L of the seedling A is maintained at a constant level.
5 and the left and right rear wheels 39 and 40 are moved up and down. Since the ground contact surfaces of the left and right sensor rollers 71a, 71a are made of a relatively soft material such as sponge made of synthetic resin, it is effective because it does not damage the multi-film D laid on the upper surface of the ridge C.

And, in particular, the root part of the seedling A that is planted by the seedling planting apparatus 1 by pressing the field scenes before and after each of the left and right sides of the seedling planting position B of the seedling planting apparatus 1 that operates vertically to plant seedlings in the field. Since the soil covering device 2 for applying soil is attached to the seedlings, the seedling planting device 1 is covered with soil for the seedlings A to be planted from the front and back of each of the left and right side portions of the seedling planting position B for plunging into the field. The seedlings are not pushed down by the soil cover device 2, suitable planting can be performed by a machine, and the planted seedlings A grow well.

On the other hand, when the aircraft moves forward while planting seedlings, the left and right wheels 5, 5 are driven and rotated on the multi-film D, so that the corrugated ridges 5C cleanly make holes F in the multi-film D.
... is opened, water is introduced into the field from the hole F for proper watering, and the seedlings grow well. Further, the soil E is placed on the ridged multi-film D for fixing the multi-film D, but the ridges 5C and 5C of the wheels 5 and 5 are the soil E.
Since it bites and rolls by cutting it, the wheels 5 and 5
Is prevented from inclining to the left and right, and the seedling transplanter goes straight well.

In addition, the above example shows the case where the seedling transplanting work is carried out in the field covered with the mulch film D.
Wheel 1 has the same running performance even in a field without
Demonstrate straightness and can perform good seedling planting work.
Further, since the wheels are made of synthetic resin, it is difficult for mud to adhere to the wheels, and work in the field can be performed very well.

FIG. 5 shows a second embodiment of the traveling section, in which the left and right wheel transmission cases 4 and 4 are respectively constituted by two cases 4b and 4c.
The base of 4b is pivotally attached to the airframe, and the base of the case 4c is pivotally attached to the tip thereof. And this left and right case 4b
The left and right arms 37 and 38 integrated with 4b and the left and right sides of the balance rod 33 are connected by left and right rods 35 and 36, respectively, and left and right arms 37 'integrated with the left and right cases 4c and 4c.
38 'and the left and right arms 37, 38 connecting rods 35', 36 '
It is connected with. However, when lowering the left and right driving front wheels 5, 5 and the left and right rear wheels 39, 40, the case 4b, 4b
Rotates in the direction B and the cases 4c, 4c rotate in the direction C, so that the left and right drive front wheels 5, 5 move to the rear of the machine and descend.

[Brief description of drawings]

FIG. 1 shows a vegetable seedling transplanting machine according to an embodiment of the present invention. FIG. 1 is an overall side view, FIG.
FIG. 3 is a rear view of the main part, FIG. 4 is an explanatory view of the action of the ground leveling plate 100, and FIG. 5 is an overall side view showing the second embodiment. Symbols in the figure, 1 is a seedling planting device, 2 is a soil cover device, 3 is a mission case, 4 is a left / right wheel transmission case, 5.5 is a left / right driving front wheel, P is a seedling locus, A is a seedling, B is a seedling planting position. , C is a ridge, D is a mulch film, E is soil, F is a hole, and L is a seedling planting depth.

Claims (1)

[Claims] 1. A seedling A which is planted by the seedling planting device 1 by pressing up and down the field scenes on the left and right sides of the seedling planting position B of the seedling planting device 1 for vertically moving and planting seedlings in the field. A seedling transplanter equipped with a soil covering device 2 for covering the root portion with soil.