JP3250114B2 - Riding rice 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 four-row planting rice transplanter.

[0002]

2. Description of the Related Art In a conventional four-row planting rice transplanter, a four-row planting transplanter is connected to the rear side of a riding type traveling vehicle body so as to be rollable left and right around an axis in the front-rear direction. In the riding rice transplanter provided with three floats arranged side by side on the bottom side of the float, the floats at the left and right ends of the floats are continuous with the planting position leveling section for leveling the planting positions at the left and right ends and the leveling section. And an outer leveling section and an inner leveling section for leveling the inside and outside of the planting positions at the left and right ends, and the inner leveling section of the float is provided longer than the outer leveling section . Ma
The front and rear wheels of the traveling body are
Planting at both left and right ends on both left and right outer sides with respect to the planting position of the stripe
They were arranged on the inner side in the left-right direction with respect to the position.

[0003]

The above four-row plant riding
For rice transplanters, the outer leveling parts of the floats at the left and right ends are leveled inward.
The float is shorter before and after the
Seedling transplantation while traveling
Fully captures horizontal movement of the machine in the field scene
And the stability of the planting depth of the left and right strips
In that respect, it was difficult to obtain sufficient accuracy. Also, the traveling body
For both front and rear wheels,
Wheels pass through unevenness of the field because it is a narrow tread
The car body tends to tilt greatly when doing it, so the seedling transplanting work
It is easy for the machine to tilt to the left and right.
This configuration is also disadvantageous in terms of stability of planting depth
Was something.

[0004]

SUMMARY OF THE INVENTION In order to solve the above-mentioned problems, the present invention provides a four-row plantation on the rear side of a riding type traveling vehicle body 1.
The seedlings transplanted working machine 2 linked to allow lateral rolling in the longitudinal direction of the shaft 27a around, the three on the bottom side of the seedling transplantation work equipment 2
One of the float 32a, 32b, in 32c and side by side riding rice transplanter was Ke set <br/>, the float 32a, 32
Among the b and 32c, the left and right center float 32b has a front side
Wide and narrow on the rear side, and the planting position P at the left and right center two
L2 and PL3 are leveled, floats on both left and right
32a, 32c are left and right outer end planting positions PL1, PL4
To leveling the planting position leveling station C, a the ground leveling unit C and the left and right outer ends continuously planting position PL1, planting positions PL1 outer leveling unit A and left and right outer ends of leveling the outer PL4, PL4 of
And an inner leveling section B for leveling the inside.
The pair of left and right front wheels 4, 4 on the front side of the
Both right and left directions with respect to the central two-row planting positions PL2 and PL3
For the planting positions PL1 and PL4 on the left and right ends on the outside
It is located on the inner side in the left-right direction, respectively, and is behind the riding type traveling vehicle body 1.
Pair of left and right rear wheels 5, 5 and auxiliary wheels 5 ', 5'
Are left and right with respect to the planting positions PL1 and PL4 at the left and right outer ends.
To the outside and the planting positions PL2 and PL3 at the center of the left and right
On the other hand, the planting positions PL1 and P at the left and right outer ends on both outer sides in the left and right direction.
It is arranged on the inner side in the left and right direction with respect to L4.
A paddy rice transplanter characterized in that the outer leveling portions A of the side floats 32a and 32c are provided longer than the inner leveling portion B in the front and rear.

[0005]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS An embodiment of the present invention will be described below in detail with reference to the drawings. Reference numeral 1 in the figure denotes a riding type traveling vehicle body, to which a seedling transplanting working machine 2 is connected via a link 24 at the rear.
Reference numeral 3 denotes an engine, which is mounted on a single frame 7a fixed rearward from the rear end of the transmission case 6 between the front wheels 4, 4 and the rear wheels 5, 5 in the front-rear direction. The upper side of the engine 3 is covered with an engine cover 8a integrated with the step floor 8, and a seat 9 is disposed on the cover 8a. The floor surface of the step floor 8 extends continuously over the feet of the seat 9, the left and right lower sides of the seat 9, and the left and right lower sides of the handle 15. Further, on both left and right sides of the seat 9, there are integrally provided getting-on / off step portions 8b, 8b for getting on and off the step 8. Rear steps 8c, 8c are provided on the rear side of the seat 9. The rear steps 8c, 8c are mounted at a predetermined interval on the left and right, and the link 2
4 is moved up and down by the hydraulic cylinder 23. The rear steps 8c, 8c are attached so as to be positioned below the upper (front) portion of the seedling mounting table 26 of the seedling transplanting machine 2. As a result, the rear steps 8c, 8
c. The foot can be easily put on the seedling mounting table 26 by placing the foot on the c, and the seedling mounted on the seedling mounting table 26 is not turned up or conversely slipped off. When raised, it is possible to reach out to the lower side of the seedling mounting table in a stable posture and directly correct the defective seedling by hand.

[0006] The rotational power of the engine 3 is transmitted by a transmission belt 10.
From the engine output shaft 3a to the hydraulic pump drive shaft 11
a from the hydraulic pump drive shaft 11a via a two-speed transmission belt transmission 12.
To the input shaft 6a. The power transmitted into the transmission case 6 is transmitted to the traveling system and the working machine system. The two-stage speed change type belt transmission device 12 is provided with two belt transmission devices having different transmission ratios, and can selectively switch each belt tension roller between a tension state and a non-tension state.

The front wheels 4, 4 are mounted on lower case 14b of front wheel transmission cases 14a, 14b which are connected and fixed to the left and right sides of the transmission case 6. Also, front wheels 4, 4
Is driven and rotated by the transmission from the transmission case 6, and further, is steered and rotated in response to the rotation of the handle 15. When the handle 15 rotates, the arm 16 rotates in conjunction with the steering shaft 15a, and the arm 16 is rotatable with respect to the upper front wheel transmission case 14a via the rods 17, 17. 14b, 14
b, the turning operation of the handle 15 is transmitted to the front wheels 4, 4.

The rear wheels 5, 5 are rear wheels on the right and left ends of a rear wheel frame 19, which is rotatably mounted on a rolling shaft 18 fixed rearward to the center of the horizontal frame 7b at the rear end of the frame 7a. The gear case 20 is mounted on the shaft. Therefore, the rear wheels 5, 5 are configured to be able to roll around the rolling axis 18. The transmission to the rear wheels 5, 5 is performed after the power in the transmission case 6 is made to protrude rearward from right and left rear portions of the rear end of the transmission case 6 via a rear wheel differential device in the transmission. Wheel drive shaft 2
1 and 21, the drive shafts 21 and 21 and the input shafts 20a and 20a of the rear wheel gear cases 20 and 20 are connected to the rear wheel transmission shafts 22 and 22 having universal joints and expansion joints, respectively. Power is transmitted to 5,5.

The front wheels 4, 4 are located at planting positions PL1, PL
2, PL3, PL4, the central two- row planting position PL
Tread so as to straddle the 2, PL3 are set.
On the other hand, the rear wheels 5, 5 have their treads set so as to straddle all four tracks PL1 to PL4. In addition, auxiliary wheels 5 ', 5' are detachable inside the rear wheels 7, 7,
At the time of mounting, the treads of the auxiliary wheels 5 ', 5' are set so as to straddle the central two lines PL2 , PL3 like the front wheels 4, 4, and are mounted at the same positions as the left and right positions of the front wheels 4, 4. Has become. Further, the propulsion lugs 5a provided on the rims of the rear wheels 5, 5 are provided so as to protrude outward,
The propulsion lugs 5'a provided on the rims of the auxiliary wheels 5 ', 5' are provided so as to protrude inward. In addition, front wheel 4,
4 is not provided with a propulsion lug. Also, the rear wheels 5, 5
Is larger than the front wheels 4 and 4, and the auxiliary wheels 5 'and 5' are set slightly smaller in diameter than the rear wheels 5 and 5.

Reference numeral 23 denotes a hydraulic cylinder. The base side of the cylinder is supported by a bracket fixed to the frame 7a below the engine 3 and the tip of a piston rod is a link 24 connecting the traveling vehicle body 1 and the working machine 2. Upper link 24a
Are connected to an arm 25 integral with the arm. Hydraulic cylinder 2
When the oil flows into and out of the cylinder No. 3, the piston rod protrudes and retreats, and the link 24 moves up and down with the traveling vehicle body 1 side as a rotation fulcrum, and the work implement moves up and down.
The hydraulic cylinder 23 operates when the hydraulic valve V is operated. The hydraulic valve V is supported such that the valve case side is supported by the planting transmission case 27 side and the spool side is linked to the vertical movement of the front part of the center float 23b. The spool side is also connected via a wire to an elevating lever provided on the traveling vehicle body 2 side.

The link 24 has an upper link 24a and lower links 24b, 24b connected to a traveling vehicle body side link base 24c fixed to the lateral frame 7b of the traveling vehicle body 1 as a link rotation fulcrum. A work implement-side link base 24d that supports a rolling connection shaft 27a fixed to the planting transmission case 27 so as to freely roll left and right is connected to the side.

Reference numeral 25 denotes a working machine transmission shaft which transmits the rotational power of the PTO shaft protruding rearward from the rear side of the transmission case 6 to the input shaft of the working machine 2 via a universal joint and an expansion joint. . Numeral 26 denotes a seedling mounting table which is slidably mounted on the rail fixed to the planting portion transmission case 27 so that the front side is upper and the rear side is lower. The seedling mounting table 26 reciprocates left and right by connecting to a laterally moving rod 27a that reciprocates left and right by a left and right reciprocating mechanism in a transmission case 27, and seedlings are planted one by one in accordance with the planting cycle in the planting devices 28. Supply.

The planting device 28 is provided with a planting unit transmission case 26.
The two transmission transmission frames 29, 29 extending rearward from the left and right end sides respectively are attached to the left and right sides of the two transmission transmission frames 29, respectively, and are mounted in total of four rows. The power of the transmission case 26 is transmitted to the planting devices 28... Of each strip via the chain transmission mechanism in the planting transmission frames 29. Further, the planting device 28 includes a rotating case 30.
And two planting tools 31 attached thereto. Each of the two planting tools 31, 31 is provided with a planting claw, and the tip of the planting claw performs a motion of drawing an elliptical locus by rotation transmission of a gear train in the case accompanying rotation of the rotating case 30. In accordance with the supply of the seedlings on the platform 26, seedlings are taken one by one and planted in the field.

32a, 32b and 32c are respectively on the left side,
At the center and right floats, the planting transmission frame 2
The front end is suspended below 9 and 29 so that it can swing up and down, and slides while leveling the mud surface of the planting field. In addition, the center float 32b is linked to a spool of a hydraulic valve V for operating a hydraulic cylinder 23 for raising and lowering the work implement 2 on the front side thereof, and also serves as a sensor float for work implement elevation control. Each float 32a, 32b,
32c is a supporting member 41 fixed to a float supporting pipe 40 provided at the lower part of the planting transmission frame so as to be adjustable in rotation.
.., Are rotatably mounted on the upper surface of the float via mounting brackets 42 fixed to the float so as to be rotatable around the left and right horizontal axes. The shape and arrangement of each float are provided as shown in FIG.

That is, the central float 32b is formed so that the front side is wide and the rear side is narrow.
It is provided to level the PL3. The left float 32a and the right float 32c are wide on the front side and
In a shape divided into two also planting position it is set to the duplex also in the recess. Therefore, the left and right floats 32a, 3a
The wide part (planting position leveling part C) on the front side of 2c levels the planting positions PL1 and PL4 at both left and right ends. Further, the lateral float 32a, a bifurcated outer leveling portion A of 32c is longer inner leveling unit B to the rear is formed short at the rear. The most rear wheel wheel mark is large (the main wheel side) 5,5 rear wheel is reliably leveled long outer grading unit A back and forth, a relatively front 4,4 and the auxiliary wheel 5 wheel marks is small ', 5 After the ' wheel
The ground level is reliably leveled at the short inner leveling area B before and after. In addition, since the inner leveling portions B of the left and right floats 32a and 32c are short in the front and rear directions, drainage between the adjacent center float 32b may be good. Also, as shown in FIG. 3, the left and right floats 32′a,
If the inner leveling portion B of 32'c is cut out and the rakes 50, 50 are supported and arranged at the positions at the front end portion of the planting transmission frame, drainage is further improved. Further, left and right float 32a, outer leveling portion A of 32c is because from the planting position PL1, PL4 of the left and right ends longer than the position and and inner leveling unit B outside, planting of the left and right end portions contact area is large position PL1 , Located outside PL4 , transplanting seedlings
A flow in which a part of the load of the work machine 2 is received in the field scene
The movement in the left and right rolling direction of the seedling transplanting machine 2 during the ground contact traveling is stabilized.

Reference numerals 34, 34 denote spare seedling mounts. P
L 'indicates a planting line at one end of the seedling planted in the previous process.

[0017]

As described above, the present invention is intended for passengers.
A four-row planting seedling transplanter 2 on the rear side of
Around the axis 27a in the left and right directions so that rolling is possible.
The three floats 32a, 3a
Riding rice transplanter with 2b and 32c arranged side by side
Of the floats 32a, 32b, and 32c.
Flows preparative 32b of central is formed on the rear side is narrow front side a wide
To level the planting positions PL2 and PL3 at the center of the left and right.
The floats 32a, 32c on both the left and right sides
Planting position leveling to level the planting positions PL1 and PL4 at the outer end
Part C and the planting position P at the left and right outer ends continuously with the leveling part C
Outside leveling section A for leveling the outside of L1 and PL4 and outside left and right
Inner leveling for leveling the inside of the end planting positions PL1, PL4
A part B is provided on the front side of the riding type traveling body 1.
The pair of left and right front wheels 4 and 4 is a planting position PL at the center of the left and right.
2, Planting position of both left and right ends on both left and right outer sides with respect to PL3
Placed on the left and right inner sides with respect to PL1 and PL4
A pair of right and left rear wheels on the rear side of the riding type traveling vehicle body 1
5, 5 and auxiliary wheels 5 ', 5' are planted positions at the left and right outer ends.
PL1 and PL4, the left and right outer sides and the left and right center
On both outer sides in the left-right direction with respect to the planting positions PL2 and PL3 of the ridges
Within the horizontal direction with respect to the planting positions PL1 and PL4 at both left and right ends
Floats 32a, 3
2c Outer terrain A is provided longer than front and rear than inner terrain B
It is a riding rice transplanter characterized by that.

[0018] Therefore, the four-row planting rice transplanter of the present invention
Level the outside of the planting positions PL1 and PL4 at the left and right outer ends.
The outer terrain section B has a long front and rear configuration.
The funnel is being transplanted while the funnel is in contact with the field.
The movement of the seedling transplanter in the left and right rolling directions
It can be received enough in terms of surface, planting of each left and right strip
The stability of the drilling depth is improved. Moreover, the riding type traveling body 1
A pair of left and right front wheels 4, 4 on the front side
Left and right ends on both left and right outer sides with respect to positions PL2 and PL3
Within the left and right directions with respect to the planting positions PL1 and PL4
On the rear side of the riding type traveling body 1
Rear wheels 5, 5 and auxiliary wheels 5 ', 5'
Left and right outer sides and left with respect to planting positions PL1 and PL4
Left and right with respect to the planting positions PL2 and PL3 of the right center two rows
Left from both left and right outer end planting positions PL1, PL4
With a configuration that is located on the inner side in the right direction,
Red has wide wheels, so you can
The inclination of the vehicle body when the wheel passes through the unevenness of the
The seedling transplanter 2 tilts to the left and right accordingly.
The condition is less likely to occur, and the planting depth of each strip is stabilized.
The properties are further improved. Furthermore, the planting position of the left and right outer ends
Outer leveling section B for leveling the outside of PL1 and PL4 Before and after
The long configuration means that the planting positions PL1, P
Of the wheel trace of the wheel passing on both left and right outer sides with respect to L4
It also contributes to leveling, and the wheels are arranged as described above.
In addition, the leveling of the field is good.

[Brief description of the drawings]

FIG. 1 is a side view showing a riding rice transplanter.

FIG. 2 is a plan view showing a riding rice transplanter.

FIG. 3 is a plan view showing a riding rice transplanter of another configuration.

[Explanation of symbols]

1: Riding type traveling vehicle body 2: Seedling transplanting machine 4, 4: Front wheel 5, 5: Rear wheel 5 ', 5': Auxiliary wheel 27a: Rolling connection shaft 32a: Left float 32b: Center float 32c: Right float PL1, PL4: Planting positions PL2, PL3 at the left and right ends: Planting position A at the center two lines A: Outer terrain B: Inner terrain C: Planting position terrain

Claims (1)

(57) [Claims] 1. A seedling transplantation work equipment 2 for planting Article 4 on the rear side of the riding vehicle body 1 and linked to lateral rolling in the longitudinal direction of the shaft 27a around, the three on the bottom side of the seedling transplantation work equipment 2 one of the float 32a, 32b, in the riding rice transplanters provided side by side 32c on the left and right, the float 32a, 32b, the left-right center of 32c
The float 32b has a wide front side and a narrow rear side.
Configuration for leveling the planting positions PL2 and PL3 in the left and right center two rows
The left and right floats 32a, 32c are planted at the left and right outer ends.
Planting position leveling part C for leveling the positions PL1 and PL4, and the planting positions PL1 and PL at the left and right outer ends continuously with the leveling part C
Planting position of the outer leveling unit A and left and right outer ends of leveling the outer 4
And the inner leveling section B for leveling the inside of the
A pair of left and right front wheels 4, 4 on the front side of the riding type traveling body 1;
Is left with respect to the planting positions PL2, PL3 of the center line
To the planting positions PL1 and PL4 at both left and right ends on both outer sides in the right direction.
And a pair of left and right rear wheels 5 on the rear side of the riding type traveling vehicle body 1,
5 and auxiliary wheels 5 ', 5' are planted positions PL at the left and right outer ends.
1, the left and right sides of both sides of PL4,
Left and right on both left and right outer sides with respect to planting positions PL2 and PL3
The inner side in the left-right direction with respect to the outer end planting positions PL1 and PL4.
Respectively arranged right and left sides of the float 32a, riding rice planting machine is characterized by providing longer back and forth from the inner <br/> side leveling unit B outside leveling portion A of 32c.