JPH09154306A - Rice transplanter - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a rice transplanter capable of conducting a transplanting work while conducting plural kinds of works on a soil in the state of maintaining a working part on the soil at a suitable height, and improving the efficiency of the rice transplanting work as a whole by installing the working part on the soil height adjustably relative to a transplanting working part. SOLUTION: This rice transplanter is obtained by liftably installed a working part on a soil 5 with a transplant working part 4 as one unit at the front side of a transplant working part 4, and also a working part on the soil 5 height adjustably relative to the transplanting working part. Further, it is preferable to adjust the height of the working part on the soil by selectively hooking its hooking piece to one of plural guiding grooves installed at a lever guide.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a rice transplanter constructed so that seedlings can be planted while performing ground work such as plowing and leveling.

[0002]

2. Description of the Related Art In planting rice seedlings, ground work such as plowing in the field and scraping is performed prior to seedling transplanting work. Conventionally, such ground work is performed by using a plow, scraping machine, etc. I was going on another occasion.

[0003]

SUMMARY OF THE INVENTION An object of the present invention is to provide a rice transplanter capable of transplanting seedlings while selectively performing a plurality of ground work.

[0004]

In order to solve the above problems, the present invention has the following arrangement. That is, the rice transplanter according to the present invention is provided on the front side of the transplanting work unit so as to raise and lower the ground working unit integrally with the transplant working unit, and the height of the ground working unit can be adjusted with respect to the transplant working unit. The feature is that it is provided.

[0005]

BEST MODE FOR CARRYING OUT THE INVENTION Embodiments shown in FIGS. 1 to 10 will be described below. In this rice transplanter 1, a transplanting work unit 4 is attached to a rear side of a traveling vehicle body 2 via an elevating and lowering link device 3 so as to be able to move up and down. A working unit 5 is provided.

The traveling vehicle body 2 includes a pair of left and right front wheels 10, 1
It is a four-wheel vehicle equipped with 0 and rear wheels 11, 11. The mission case 12 is arranged in the front part of the machine body, and the front wheel axle frames 13, 13 extend to the left and right sides from the left and right side parts of the mission case, and the front wheel final case 1 is attached to the end thereof.
4, 14 are provided. Front wheel support cases 15 and 15 are rotatably provided below the front wheel final cases 14 and 14, and the front wheels 10 and 10 are attached to front wheel axles 10a and 10a that project laterally from the outer side portions thereof. Further, front ends of a pair of left and right vertical frames 17, 17 are fixed to a rear surface of the mission case 12, and a horizontal frame 18 is fixed to rear ends of the vertical frames 17, 17. Then, the rear wheel rolling shaft 19 whose axis is oriented horizontally in the front-rear direction is fitted in the left and right central portions of the horizontal frame 18 in a fixed state, and the rear wheel frame 20 is fitted to the protruding portion of the rear wheel rolling shaft.
Is supported for rolling freely. Rear wheel gear cases 21 and 21 are provided at the left and right ends of the rear wheel frame 20, and rear wheel axles 11a protruding laterally from the outer sides thereof.
Rear wheels 11, 11 are attached to 11a.

The engine 30 is provided on the vertical frames 17, 17. The rotational power of the engine output shaft 30a is once transmitted to the drive shaft 32a of the hydraulic pump 32 by the first belt transmission device 31, and the transmission case 1 is transmitted from the drive shaft to the continuously variable second belt transmission device 33.
It is transmitted to the two input shafts 12a. Then, the traveling driving force changed by the transmission in the mission case 12 is transmitted to the front wheel final cases 14, 14 by the front wheel axles in the front wheel axle frames 13, 13 to drive the front wheels 10, 10 to rotate and the rear wheels. Drive shaft 3
5, 35 are transmitted to the rear wheel gear cases 21, 21 to rotate the rear wheels 11, 11. Further, the transplanting work unit driving force and the grounding work unit driving force are respectively taken out by the transplanting work unit driving shaft 36 and the grounding work unit driving shaft 37 projecting to the back surface of the mission case 12.

The front wheels 10, 10 are located at a position near the front of the upper part of the fuselage.
A steering wheel 40 for steering is provided. Behind the handle 40, a seat 42 is installed on an engine cover 41 that covers the upper side of the engine 10. Handle 4
The lower part of 0 is covered with a front cover 43, and a display panel 44 for displaying various operating states is provided on the upper part thereof. Around the engine cover 41 and the front cover 44, there is a horizontal floor 45 on which the operator can walk freely, and elevator steps 46, 46 used for getting on and off the floor are provided on both left and right lower parts of the floor 45. ing.

Further, the traveling vehicle body 2 is provided with spare seedling mounts 47, 47 on which spare seedlings to be replenished to the seedling mount 80 described later are mounted. The spare seedling mounts 47, 47 are columns 47
a and 47a are rotatably supported in a horizontal plane, and are in a working position (shown in FIG. 1 and FIG. 2) spread to the left and right sides of the front part of the machine body and a stored position when they are positioned on the left and right sides of the seat 42. The position can be changed to the position (shown in FIGS. 3 and 4).

Further, by positioning the traveling vehicle body 2 above the existing seedlings on the adjacent strips or on the edge lines during the work, the seedlings being planted and the existing seedlings on the adjacent strips or the edge lines can be connected. Side markers 48, 48 for setting an appropriate interval between
Is provided. The side markers 48, 48 are rotatably supported on the support shafts 48a, 48a in a horizontal plane, and the side markers 48, 48 project to the side of the machine during the working position (see FIGS. 1 and 2).
(Shown in FIG. 3) and the retracted position (shown in FIGS. 3 and 4) rotated rearward along the side surface of the machine body.

The lifting link device 3 comprises vertical frames 17, 1
7, an upper link 51 and a lower link 52, 5 rotatably attached to a link base 50 fixedly provided at a rear end portion thereof.
2, and a traveling vehicle body side hitch 53 is attached to the rear ends of these vertical links. Then, the transplant work unit side hitch 54 is connected to the traveling vehicle body side hitch 53, and the transplant work unit 4 is attached to the lifting link device 3. The transplant work unit side hitch 54 is provided at the front end of the transplant work unit rolling shaft 55 that projects forward from the transplant work unit side 4, and the transplant work unit 4 is supported rotatably left and right with respect to the traveling direction. It A lower end of a swing arm 57 that pivots the base side of the lifting hydraulic cylinder 56 to a support member (not shown) fixed to the vertical frames 17 and has its piston rod side integrally downward with the base of the upper link 51 and extends downward. When the hydraulic cylinder 56 is extended and contracted, the lifting link device 3 moves up and down, and the transplanting work unit 4 moves up and down in a substantially fixed posture. The hydraulic cylinder 56 is expansion / contraction controlled by a hydraulic valve 58 provided above the link base 50.

The transplanting work section 4 has a structure of eight-row planting, and a transmission case 60 which also serves as a frame, a total of eight sets of planting devices 70 for planting seedlings in a field scene, ..., Supplying seedlings to the planting device. Seedling mounting table 80, 5 floats 9 that slide on the field scene as the machine progresses to level the field scene before seedling planting
0,...

The transmission case 60 is fixedly connected to the front portions of the two inner planted transmission cases 62, 62 extending rearward to the left and right side surfaces of the seedling table drive case 61 located at the center of the left and right sides.
The front parts of the two planted transmission cases 62, 62 are fixedly connected to the front left and right outer parts of the two planted transmission cases 62, 62 via connecting pipes 63, 63. The four planted transmission cases 62, ... Are arranged equidistantly with their front and rear positions aligned, and the planting devices 70 ,. Are provided respectively. The transplanting work part rolling shaft 55 is provided so as to project from the center of the front surface of the seedling table driving case 61.
The power is transmitted from the transplantation work unit drive shaft 36 to the transmission case 60 via the first transplantation work unit transmission shaft 66, the planted clutch case 67, and the second planted transmission shaft 68.

The planting device 70 comprises a rotary case 71 connected to the planting drive shaft 64, and a pair of planting tools 72, 72 attached to both ends of the rotary case. The transmission mechanism in the rotating case 71 causes the planting tools 72, 72 to rotate in a direction opposite to the rotating direction of the rotating case 71, and the tip of a fork-shaped seedling separating device (not shown) fixed to the planting tool is vertically deformed. Operates to draw an elliptical closed trajectory. Thereby, the seedling separating tool of the planting tools 72, ...
The seedlings supplied to the seedling intake 86, ... Of the seedlings are separated and retained, and the seedlings are planted in a field scene.

The seedling table 80 is provided so as to be inclined so that the front side is in a higher position, and is supported by a long support rail 81 on the left and right and rollers attached to the upper end of the seedling table support frame 82, and slides left and right. It is free. Seedling mount 80
Is divided into eight seedling placing parts 80-1 to 80-8, and a seedling feeding belt 85 for feeding the seedling downward is provided for each seedling placing part. Further, a seedling receiving plate 87 having a seedling intake 86, ... Corresponding to the planting device 70, is formed adjacent to the lower end of the seedling placing table 80.
Are provided integrally with the support rail 81. The seedling mount drive mechanism provided in the seedling mount drive case 61 drives the seedling mount 8
0 reciprocates left and right and each seedling feeding belt 85, ...
The seedling feeding section 80-1 to 80-is driven by intermittently driving the seedlings.
The above 8 seedlings are supplied to the seedling intake 86, one by one.

The seedling placing portions 80-2 to 7 for the central six rows are integrally provided, but the outermost row seedling placing portions 80-1 and 80-8.
Is provided separately from this, and the outermost row seedling mounting portion 80-
When storing 1, 80-8, fold it inward to seedling table 8
It is configured so that the horizontal width of 0 can be reduced (shown in FIGS. 3 and 4). Further, since the member having the widest right and left width in the rice transplanter is the support rail 81, the outer end portion of the support rail 81 can also be bent upward to reduce the total width.

The float 90 has a mounting plate 91 fixed on the upper surface of the rear portion of the float and a float support rod 92.
A float mounting shaft 93 is rotatably pivotally attached to the rear end of the rear end, and the front part is provided so as to rotate up and down according to the unevenness of the surface soil surface. Further, springs 94, ... Are stretched between the mounting plates 91, ... And the float support rods 92 ,. The floats 90, .. are pulled with a weak force so that the front portions of the floats 90 ,. . The float support rods 92, ... Are integrally attached to a horizontal shaft 95 rotatably supported below the planted transmission case 62 ,. Further, a horizontal shaft 96, ... Is also provided on the upper part of the planted transmission case 62 ,. The upper link 97, ... Is attached to the horizontal shaft 96 ,. There is.
The rear ends of the upper links 97, ... Are connected to the intermediate portion of the vertical links 99 ,. Float mounting shaft 9
3, the horizontal axis 95, the horizontal axis 96, ... And the connecting axis 100, ... Are located at the vertices of the parallelogram, and the float support rods 92 ,.
And the upper links 97, ... Form parallel links. Therefore, the planting depth adjusting lever 101 integrally provided on the horizontal axis 95.
When the float support rods 92, ... Are rotated up and down by operating, the mounting height of the floats 90, ... Is changed and the planting depth of the seedlings is adjusted.

Vertical link 9 of float 90A at the center of the left and right
The upper part of 9 extends to the rear side of the seedling mounting table 80, and the sensing arm 102 having an L-shape in side view is rotatably attached to the tip part thereof. A wire 103 for operating the hydraulic valve 58 is connected to one end of the sensing arm 102. Further, a sensing member 105 is integrally attached to the mounting plate 91, and a tip end portion thereof and the other end of the height detection arm 102 are connected by a sensing rod 106. Thereby, for example, when the surface soil surface becomes higher and the front part of the float 90A is pushed up, the sensing member 105 rotates downward, and the sensing arm 102 also rotates in conjunction with it.
The wire 103 is pulled and the hydraulic valve 58 is switched to the side where the hydraulic cylinder 56 is extended. On the contrary, when the surface soil surface becomes low and the front part of the float 90A sinks, the sensing member 105
Rotates upward, and in conjunction with this, the sensing arm 102 rotates in the opposite direction to the above, the wire 103 is returned, and the hydraulic valve 58 switches to the side that contracts the hydraulic cylinder 56.
In this way, the planting depth of the seedlings is always kept constant by raising and lowering the transplanting work unit 4 in accordance with the height change of the topsoil surface.

Since the surface soil surface height detecting portion is provided on the rear side of the seedling placing table 80, the ground working portion is different from the conventional construction in which the surface soil surface height detecting portion is provided in front of the center float 90A. 5 and the transplanting work unit 4 can be brought close to each other, and as a result, the transplanting work unit 4 can be arranged at a position closer to the front,
Good weight balance. Further, since the seedling placing table 80 is close to the traveling vehicle body 2, it is easy to supply seedlings.

The ground working unit 5 is a rotor shaft 110 in the left-right direction.
Equipped with a rotor shaft 110 instead of a rotor 111, ...
And the plowing claws 112, ... Can be selectively attached. The rotor shaft 110 is rotatably supported by a lower portion of a chain case 114 and bearing portions 116, ... Protruding downward from a horizontal rotor frame 115 fixed to the chain case, and is driven from the ground work portion drive shaft 37. It rotates by the power transmitted to the chain case 114 via the ground work unit transmission shaft 117. Input shaft 114a provided on the upper part of the chain case 114 from the ground work unit transmission shaft 117
Since the power is transmitted to the universal joint, the universal joint connecting the shafts to each other can reduce the bending angle of J, and the smooth power transmission is possible.

The substitute scraper rotor 111 is a cylindrical body 111a in which a large number of rod-like scrape nails 111b, ... Made of an elastic material such as a piano wire are planted in a tangential direction. The outer peripheral surface of the cylindrical body 111a is replaced with the scraping claws 111b, ...
By rotating so as to move in the direction opposite to the direction of 11b, ..., it has the action of crushing the soil mass in the surface layer and stirring it with water to form a mud and leveling the mud surface. . By making the scraping claws 111b, ... Of the scraping rotor 111 rod-shaped, the resistance to water during the work is small and the ripples can be suppressed, so that the transplanted seedlings are less adversely affected. Further, by forming the substitute scratching claws 111b, ... With an elastic material, the substitute scratching claws 111b are prevented from being deformed or damaged even if they hit a stone or the like.

Further, the plowing claws 112, ...
Four sheets are attached at positions corresponding to each of the planting strips PL1 to PL8 of 0 at a phase interval of 90 degrees. Lower plowing claw 1
When 12, ... Is rotated in a state of being submerged in the topsoil portion of the field that is not tilled, the topsoil portion is tilled by the width required for seedlings transplantation prior to the seedlings transplantation by the planting device 70.

A pair of left and right parallel links 120 (120a and 120b), 120 (1) having rear ends pivotally supported by supporting members 119, 119 fixed to the upper surfaces of the connecting pipes 63, 63.
The front ends of 20a and 120b) are attached to the chain case 114.
And the rotor frame 1 at the position symmetrical to the chain case.
The support plates 121 fixed to 15 are connected to each other. A ground work switching lever 122 is integrally provided on the rotor frame 115, and a locking piece 122a fixed to the front part of the lever is provided on the upper link 51 of the lifting link device.
The ground working unit 5 is supported so as to move up and down integrally with the transplanting working unit 4 by being locked in the guide groove of the lever guide 123 provided in the. The lever guide 123 is provided with a plurality of guide grooves, and the height of the ground working unit 5 can be adjusted by selectively locking the locking pieces 122a in these guide grooves. For example, when mounting the scraping rotor 111 having a small working diameter, as shown in FIG. 9A, the ground working unit 5 is lowered and the plowing claw 1 having a large working diameter is mounted.
When mounting 12, ..., The ground working part 5 is raised as shown in FIG. 9 (b). The ground work switching lever 122 is provided integrally with the rotor frame 115, and since the operation amount of the ground work switching lever 122 and the elevation amount of the ground working unit 5 are the same, it is not necessary to move the ground work switching lever 122 largely. The height of the ground working unit 5 can be easily adjusted while sitting on the seat 42.

The substitute rotor 111 is a chain case 11
Central scraping rotors 111A, 1 located on both sides with 4 in between.
11A and the outer edge scraping rotor 11 located on the left and right sides thereof.
1B and 111B, the left and right widths can be reduced by moving the outer edge scraping rotors 111B and 111B inward at the time of storage. As shown in FIG. 10, the rotor shaft 110 is divided into a central portion 110A for supporting the central scraping rotor 111A and outer end portions 110B, 110B for supporting the outer scraping rotor 111B.
Both the shafts 110A and 110B by slidably fitting the square shaft portion 110a on the 10A side and the square hole portion 110b on the outer end portion 110B side.
Are connected to rotate integrally. The rotor frame 115 also has a central portion 115A and outer end portions 115B, 115.
The outer end portion 115 is formed in the hollow portion of the central portion 115A.
B is slidably inserted.

The procedure for reducing the left-right width of the scraping rotor 111 is to first pull the outer scraping rotor 111B outward from the working state shown in FIG.
10 is removed, the outer end scraping rotor 111B is rotated forward, and the outer end portion 115B of the rotor frame 115 is further inserted into the central portion 115A. As shown in b), the outer edge scraping rotor 11
Move 1B inward. Even when the plowing claws 112, ... Are attached to the rotor shaft 110, the lateral width is reduced in the same manner as above.

At the time of work, as shown in FIGS. 1 and 2,
The seedling mounting base 80 and the support rail 81 are expanded, and the spare seedling mounting base 4 is
Spread 7, 47 to the side of the front of the machine, and set the side marker 4
8 and 48 are projected to the left and right sides of the machine body. Further, the ground working part 5 is equipped with a substitute scraping rotor 111 or plowing claws 112, ... According to the seedling planting mode, and the height of the ground working part is adjusted accordingly. In that state, put the seedlings on the seedling placing table 80,
The airframe is advanced while driving the transplanting work unit 4 and the ground work unit 5. In the case of transplantation by proxy, the proxy rotor 11
Float 90, ... level the mud surface scraped by 1, and planting device 70, ... on the leveled mud surface.
Plant 0 seedlings. In the case of non-tillage transplantation, the plowing nails 112, ... Plowing the topsoil portion by the width required for seedling transplantation, and the planting devices 70, ... Plant.

When the work is completed, as shown in FIG. 3 and FIG. 4, the outermost row of the seedling placing portions 80-1, 80 of the seedling placing table 80.
-8 and the outer ends 81a, 81a of the support rails 81 are folded, the preliminary seedling mounts 47, 47 are rotated to the storage position, and the side markers 48, 48 are also rotated to the storage position.
Further, the scraping rotor 111 (only the rotor shaft 110 when the plowing claws 112, ... Are mounted) is moved inward to reduce the left-right width so as to be suitable for storage. Further, the ground work switching lever 122 is operated to raise the whole ground work unit 5 with respect to the transplant work unit 4 so that the scraping rotor 111 or the plowing claws 112, ... Do not come into contact with the ground or the bed of a truck. To

Next, as shown in FIG. 11, the ground working unit 5
By making the parallel links 120, 120 for supporting the left and right swingable to the left and right, and moving the substitute scraper rotor 111 to the side opposite to the planting ridge that has been planted, the substitute scraper 111 is moved to the opposite side when working. Waves created by scraping rotor 111 are already planted PL
You may comprise so that the influence which n gives to the seedling may be made small.

Further, the ground working unit 5 shown in FIGS. 12 and 13 is a scraping rotor 11 having a constant width (two widths in the illustrated example).
A plurality of 1, ...
Are supported by chain cases 131, ... and support plates 132, provided below the rotor frame 130, and are individually movable up and down. On the other hand, on the transplanting work unit 4 side, there are provided ridge clutches 133, ... For turning on / off the drive of each of the planting devices 70 ,. The stirrer rotor 111 moves up. Therefore, when the driving of some of the planting devices 70 is stopped at the end of the field or the like, the stopped strips do not scratch, and it is possible to prevent the field from being roughened by overlapping scratches.

[0030]

As described above, in the rice transplanter according to the present invention, the ground work section is provided so that its height can be adjusted with respect to the transplant work section. The seedlings can be transplanted while being kept in a stable condition, and the efficiency of rice planting can be improved. Depending on the case, a ground work unit for performing ground work other than plowing and scraping may be provided.

[Brief description of the drawings]

FIG. 1 is a side view showing a state when a rice transplanter is working.

FIG. 2 is a plan view of FIG.

FIG. 3 is a side view showing a state when the rice transplanter is stored.

FIG. 4 is a plan view of FIG. 3;

FIG. 5 is a plan view with a part of the traveling vehicle body omitted.

FIG. 6 is a side view of a height detector.

FIG. 7 is a plan view of a main part of a ground work unit and a transplant work unit equipped with a substitute rotor.

FIG. 8 is a plan view of essential parts of a ground work unit and a transplant work unit to which a plowing claw is attached.

FIG. 9A is a side view of a ground working unit equipped with a scraping rotor, and FIG. 9B is a side view of a ground working unit equipped with a plowing claw.

FIG. 10 is a plan view showing (a) a developed state and (b) a folded state of an outer end portion of the ground working unit.

FIG. 11 is a plan view of main parts of different ground working units and transplant working units.

FIG. 12 is a side view of still another ground working unit.

13 is a plan view of essential parts of a ground work unit and a transplant work unit shown in FIG. 12;

[Explanation of symbols]

 1 Rice transplanter 2 Running car body 3 Lifting link device 4 Transplanting work unit 5 Ground working unit 110 Rotor shaft 111 Scraping rotor 112 Plowing claw 120 Parallel link 122 Ground work switching lever

 ─────────────────────────────────────────────────── ─── Continuation of the front page (72) Inventor Hitoshi Yamazaki 1 Hachikura, Tobe-cho, Iyo-gun, Ehime Prefecture, Engineering Department, Iseki Agricultural Machinery Co., Ltd. Department

Claims (1)

[Claims] 1. A ground work unit is provided on the front side of the transplant work unit so as to move up and down integrally with the transplant work unit, and the ground work unit is provided so that its height can be adjusted with respect to the transplant work unit. Rice transplanter.