JP3509951B2 - Multi transplanter - Google Patents

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a multi-transplanter for adjusting a planting depth by a laying roll for feeding a sheet and laying it on the ground.

[0002]

2. Description of the Related Art A planting depth adjusting mechanism in a conventional multi-transplanting machine is one in which a laying roll composed of a plurality of rollers for feeding and laying a sheet is vertically adjusted through its mounting portion to vertically plant a sheet. It is known to control the descending ground contact height of a working machine having an attached claw and adjust the planting depth of seedlings by changing the distance between the contact height of the planting claw and the laying roll.

[0003]

However, the conventional planting depth adjusting mechanism moves a plurality of laying rolls up and down in parallel and detects the position of the laying rolls to control the lifting cylinder of the working machine. The sensor (hydraulic pressure sensing device) that operates is also moved in the same amount as the above-mentioned vertical movement is switched, so that the structure is complicated. In addition, the switching adjustment is troublesome and erroneous adjustment is likely to occur at that time, and there is a problem that the set planting depth cannot be obtained.

[0004]

Means for Solving the Problems The present invention is intended to solve the problems of the above-mentioned conventional device, and is a laying for laying out the seat 16 so as to cover the ground G as the aircraft travels. A work 9 including a laying device S having rolls 14a and 14b provided in the front-rear direction and a planting claw 13 for penetrating the laid sheet 16 and planting seedlings is provided on the traveling machine body 1 so as to be able to move up and down via a hydraulic cylinder. At the same time, in a multi-transplanter in which the planting depth can be adjusted by vertically adjusting the laying rolls 14a and 14b provided in the planting work machine 9,
The front and rear roll links 15a and 15b, which pivotally support the laying rolls 14a and 14b, are rotatably provided on the support shaft 46, and the sensor 4 for detecting the planting depth on the support shaft 46.
6a is provided to adjust the distance between the laying rolls 14a and 14b so as to be opposed to the support shaft 46 of the laying rolls 14a and 14b .
The planting depth of seedlings is adjusted by changing the height of the seedlings. Further , the wire 61 is attached to one of the roll links 15a and 15b for supporting the laying rolls 14a and 14b.
, The outer 62 is connected to the other, and
A tension spring 47a is tensioned between the rulers 14a and 14b,
By operating the switching lever 60 that connects the wires 61,
Make sure to adjust the distance between the laying rolls 14a and 14b.
ing.

[0005]

[Operation] With the above configuration, the front and rear laying rolls 14
By narrowing (interposing) the distances a and 14b, the distance between the ground G and the planting claw 13 can be increased through the sheet 16 and the seedlings can be planted shallowly. Further, by separating the front and rear laying rolls 14a and 14b from each other, the distance between the planting claw 13 and the ground G can be reduced, and the seedlings can be deeply planted.

At this time, the laying roll 14a,
Sensor is provided integrally with the support shaft 4 6 supporting the 14b 4
Since the height of the work implement 9 is controlled by the 6a, a simple structure can be adopted, and the planting depth can be adjusted accurately, easily and easily.

[0007]

[Examples] Fig. 1 and Fig. 2 show an overall side view and a plan view of a multi-transplanter (rice transplanter) of the present invention, in which a traveling body 1 is supported by front and rear wheels 2 and 3, and a body frame 4 thereof is provided. A bonnet 6 and a driver's seat 7 are mounted on the upper side, and a planting work machine 9 is mounted on the rear side of the machine body via an elevating link 8 so as to be able to move up and down and roll freely. Auxiliary seedling stand 11 shaped like a rack
Is installed.

A seedling stand 12 having an upper end inclined forward is obliquely installed on the planting work machine 9, and a well-known rotary for sequentially scraping and transplanting mat seedlings 41 at the lower rear surface of the seedling stand 12 as the machine runs. A type planting rod (planting claw) 13 is attached to a planter case 30 that constitutes a working machine frame. In addition, on the bottom surface of the planting work machine 9, FIG.
As shown in (1), the rolling contact of the field G surface is followed while the machine is traveling, and the rolling pressure or height is sensed to control the swing of the lifting link 8 to support the working machine 9 at a predetermined height. The laying roller 14 (14a, 14b) consisting of two front and rear long rollers is laterally supported by the equalizer arm 15 to form the laying apparatus S for the sheet 16.

The laying roller 14 also has a function of guiding the feeding of the sheet 16 described below and having a function of pressing it against the surface G of the field to lay it. At the upper front position of the laying roller 14, there is provided a cylindrical sheet case 17 which rotatably supports a sheet 16 made of a paper sheet made of recycled corrugated paper or the like in a roller direction in the left-right direction. It is attached to form a machine frame.

Reference numeral 18 denotes a stand for supporting the working machine 9 when it is stored in a state where it is rotated clockwise so as to project downward and guards the working machine when it is facing backward. Further, 20 is a preliminary roll of the sheet 16 supported on the side of the machine,
A support frame 31 that supports the support arm 25 and the auxiliary roll 20 that are horizontally rotatably supported behind the machine body 1.
Is held by the, at the time of the roll paper replenishing spare roll 2 rotates at a fulcrum 19 at the rear of the support frame 31 and the front end from the side
0 is moved to the position of the seat case 17 and inserted.

The support frame 3 at the front side of the driver's seat 7
A handle 32 having a gate shape in a side view is erected on the front side in the front-rear direction so that it can be used as a handle when the support frame 31 is rotated and when the operator steps on and off the step 34. A guide roller 29 for feeding the sheet is rotatably supported by the rear opening of the seat case 17, and the sheet 16 is pushed backward by the lower surface of the laying roller 14 while being pushed by the lower surface of the laying roller 14 as the machine runs. The rear end of the seat 16 is grounded on the G surface of the field, and while being pressed, it retains its feeding reaction force and is laid in a strip shape in sequence.

Further, reference numeral 21 is a seat receiver provided with a plate-shaped guide 21b along the lower portion of a rod-shaped support 21a extending rearward from the lower position of the seat case 17, and when the machine is traveling or not. It receives the sheet feeding end when the machine is in a raised state during work. This sheet receiver 21
Can also be configured so as to be expandable / contractible by, for example, a telescopic mechanism as shown in FIG.

In the case of such a configuration, the sheet receiver 2
By providing an adjusting operation mechanism that adjustably adjusts the protruding length of the rear end portion of the driver's seat 7 from the driver's seat 7, when the seat 16 is not laid, the seat receiver 21 is used when the aircraft moves forward and rides on a ridge. Has a feature that it can be operated so as to be shortened to avoid contact with the ground G, and damage or deformation thereof can be easily prevented.

Reference numeral 22 denotes a sheet cutter which is laterally provided at the rear of the working machine 9 and is made of a saw-toothed thin plate in a rear view. Both ends of the sheet cutter 2 are rotatably supported by the cutter arm 2 sideways.
The operation wire 26 attached to the rear end of the driver 3 and pulled by the cutter operating lever 24 on the side of the driver's seat 7.
The rear end of the cutter arm 23 is oscillated up and down via the, and the cutter 22 is driven down to the G surface of the field,
The sheet 16 is cut at the sheet covering end position.

Reference numeral 28 is a sheet sensor attached to the opening of the seat case 17 and is provided in the vicinity of the seat 16 so as to issue an alarm when the remaining amount of the seat 16 is exhausted. At the lower left and right ends of the seat case 17 that constitutes the work machine frame, brackets 36 are provided so as to project, and if the bracket 36 is one that is slightly shorter than the width of the seat 16 and larger than the left and right width of the rear wheel 3. The roller 37 is rotatably supported, and when the working machine 9 is lowered and grounded to perform transplanting work, wheel traces and other irregularities of the laying field G of the sheet 16 are averaged and rolled. ing.

By this leveling work, the sheet 16 is laid on the averaged and leveled field G surface more closely without forming an air pocket, and the laying roller 14 makes the sensing of the rice field accurate and planting. Make the depth of contact accurate.
Further, at the left and right ends of the lower rear part of the working machine 9, the end pressing rollers 3 that roll so as to press the left and right ends of the sheet 16 against the field G surface as the sheet is fed out during the transplanting work.
The arm 8 is pivotally supported by an arm 39 so as to be adjustable up and down. The edge pressing rollers 38 move the left and right edges of the sheet 16 fed out from the sheet case 17 onto the sheet receiver 21,
It is provided at a position where it is reliably pressed.

As shown in FIG. 5, the end pressing roller 38 has a grounding wheel 38b with protruding teeth integrally attached to the end of a rotary shaft 38a loosely fitted to a holder 39a fixed to the end of an arm 39. By providing the spring 39b for urging the arm 39 downward and the stopper 39c for restricting the lower limit position thereof, the side portion of the seat 16 laid by the grounding wheel 38b is pressed against the ground to allow the aircraft to travel. I am trying to rotate with it.

As a result, the edge pressing roller 38 moves the sheet 1
The end portion of the upper surface of 6 is forcibly pressed and rotated, and can be pressed accurately without causing slippage or the like. By providing the protrusion 38c on the peripheral surface of the edge pressing roller 38, the protrusion 38c pierces the sheet 16 and the initial laying of the sheet 16 can be improved. In the multi-transplanting operation by the device, in the field G such as a paddy field, the feeding end of the roll-shaped sheet 16 is fixed to the transplantation starting point,
This is performed by running the machine body 1 while pressing the sheet 16 with the laying roller 14 and the end pressing roller 38 in a state in which the working machine 9 is lowered and grounded. Then, along with the traveling of the aircraft, the planting rod 13
Is operated along the locus L, the mat-shaped seedling 41 is scraped from the lower end of the seedling stand 12, is extended to the field G, and is sequentially planted through the sheet 16 laid.

FIGS. 3 and 4 show the sheet laying roller 14 in the working machine 9. The sheet laying roller 14 is composed of front and rear roll links 15a, 15b pivotally supported by a single equalizer shaft 46. The pair of equalizer arms 15 is pivotally supported, and each is independently grounded on the seat 16. And the front and rear rollers 14
The rollers 14a and 14b are axially supported by bearings 48 made of rubber or synthetic resin having high elasticity so that both ends of the roller shaft 47 can be elastically eccentrically moved up and down and back and forth. The roller corresponds to the slope and unevenness of the field and the distance H
It is a mechanism that follows and grounds in the range of.

Both the front and rear laying rolls 14a, 14b
A tension spring 47a is stretched between the roller shafts 47, 47, and a wire 61 and an outer 62 for adjusting the gap between the roller links 47a and 47 are provided between the restriction pieces 15c, 15c protruding above the roll links 15a, 15b. The planting depth adjusting mechanism U is configured by connecting the other end to a switching lever 60 grounded to the side of the driver's seat 7 and fixing the outer 62 thereof with a mounting piece 63.

[0021] The equalizer shaft 46 and pivotally supported on both sides in the moth Idoamu 52, as a fulcrum the mounting shaft 52a, is configured to enable lifting along laying rolls 14a, and 14b in the vertical direction of the turning locus ing. When the laying rolls 14a, 14a are brought into contact with the ground G via the seat 16 by the mechanism, the sensor rod (which is elastically installed at the center of the equalizer shaft 46 so that the equalizer shaft 46 maintains a predetermined position) ( Sensor) 46a is moved up,
As a result, the hydraulic control valve connected to the sensor rod 46a is controlled, the lifting amount of the lifting cylinder (not shown) for lifting the working machine 9 is determined, and the planting depth of the seedling 41 by the planting rod 13 is determined. Is controlled.

That is, if the ground pressure of the laying rolls 14a, 14b is strong, the working machine 9 rises, and if it is weak, it descends, and the planting depth is kept constant. When it is desired to set the planting depth shallow by the planting depth adjusting mechanism U configured as described above, the wire 61 is loosened by moving and adjusting in the direction of the arrow [a], and the laying roll 14a,
The roll link 15a, 15b is rotated about the equalizer shaft 46 by the pulling force of the pulling spring 47a, and is at the shallowest planting position indicated by the chain line 14b below the standard position indicated by the solid line. Sheet 1 laid by this
Shallow planting is possible by separating the heights of 6 and the planting claw 13 from each other.

When the switching lever 60 is moved and adjusted in the direction of arrow [a] and fixed, the wire 61 pulls the wire 61.
Since the restriction pieces 15c, 15c can be sandwiched against the 7a, the laying rolls 14a, 14b rotate via the roll links 15a, 15b so as to spread upward in the direction indicated by the chain line, and the It is possible to reduce the distance in the height direction and enable deep planting.

Then, by any of the above adjusting operations,
When the laying rolls 14a and 14b are pressed against the ground through the sheet 16, the sensor 46a provided on the equalizer shaft 46 is operated to move the working machine 9 to the planting depth adjusting mechanism U.
The planting depth can be controlled so that the planting depth is set by.

[0025]

The multi-transplanter according to the present invention is provided with a laying device S provided with laying rolls 14a and 14b in the front-rear direction, which lays out the sheet 16 and covers the ground G as the machine runs. The planting work machine 9 provided with the planting claws 13 for planting seedlings by penetrating the sheet 16 is provided on the traveling machine body 1 so as to be vertically movable via a hydraulic cylinder, and the laying roll 14a provided on the planting work machine 9 is provided. In the multi-transplanter in which the planting depth can be adjusted by vertically adjusting 14b.
Front and rear roll links 15a and 15b that pivotally support the laying rolls 14a and 14b are rotatably provided on a support shaft 46,
A sensor 46a for detecting the planting depth is provided on the support shaft 46 to adjust the distance between the laying rolls 14a and 14b, and the ground contact height between the laying rolls 14a and 14b and the ground G is changed to plant seedlings. It is configured to adjust the depth of application.

Therefore, the depth of planting can be adjusted simply by operating the front and rear laying rolls 14a and 14b provided on the support shaft 46 so as to be close to and separated from each other, so that erroneous operation can be prevented and can be performed easily and reliably. You can Further, since the planting depth adjusting mechanism is constituted by the support shaft having the sensor 46a for detecting the height of the working machine and the laying rolls 14a, 14b, the mechanism can be made extremely simple and inexpensive, and the operation can be performed. It is possible to improve the property.

Further, since the driver can conveniently adjust the planting depth while moving up and down the working machine 9 while staying in the driver's seat 7, the planting work can be carried out efficiently and satisfactorily. You can

[Brief description of drawings]

FIG. 1 is a side view of a multi-transplanter equipped with an embodiment of the present invention.

FIG. 2 is a plan view of FIG.

FIG. 3 is a side view showing a planting depth adjusting mechanism.

FIG. 4 is a plan view of FIG.

FIG. 5A is a side view showing a configuration of an end pressing roller,
(B) is a plan view of the same roller.

FIG. 6 is a side view showing an example of a stretchable sheet receiver.

[Explanation of symbols]

1 Traveling Machine 9 Working Machine 13 Planting Claws 14, 14a, 14b Laying Rolls 15a, 15b Roll Link 46 Support Shaft (Equalizer Shaft) 46a Sensor 47a Pulling Spring 52 Guide Arm 60 Switching Lever S Laying Machine G Ground

Claims (2)

(57) [Claims] 1. Laying rolls 14a, 14 for laying out a sheet 16 along with traveling of an airframe so as to cover the ground G.
A work 9 including a laying device S provided with b in the front-rear direction and a planting claw 13 for penetrating the laid sheet 16 and planting seedlings is provided on the traveling machine body 1 so as to be able to move up and down via a hydraulic cylinder, and Laying roll 14 provided on the planting work machine 9
In the multi-transplanter in which the planting depth can be adjusted by vertically adjusting a and 14b, front and rear roll links 15a and 15b that pivotally support the laying rolls 14a and 14b are rotatably provided on a support shaft 46, and Sensor 4 for detecting the planting depth on the support shaft 46
6a is provided to adjust the distance between the laying rolls 14a and 14b so as to be opposed to the support shaft 46 of the laying rolls 14a and 14b .
A multi-transplanter characterized by adjusting the planting depth of seedlings by changing the height of the seedlings. 2. The wire 61 is attached to one of the roll links 15a, 15b for supporting the laying rolls 14a, 14b, and the other one.
The outer 62 is connected to the laying roll 14
Install a tension spring 47a between a and 14b, and
The laying is performed by operating the switching lever 60 that connects the ear 61.
The multi-transplanter according to claim 1 , wherein the distance between the rolls 14a and 14b is adjusted .