JP2022085191A - Sulky-type seedling transplanter - Google Patents

Abstract

To provide a sulky-type seedling transplanter which properly soil-prepares a field face, and can perform favorable seedling transplantation work by solving a problem that a soil preparation rotor has two-stage constitutions in fore-and-aft directions of a center soil preparation rotor and left and right soil preparation rotors, thus causing a problem that a field at a boundary between the center soil preparation rotor and the left and right soil preparation rotors cannot be properly soil-prepared.SOLUTION: In a sulky-type seedling transplanter attached with a seedling transplanter part 4 at a rear side of a traveling vehicle body, and having a soil preparation rotor 6 at a front side of the seedling transplanter part, the soil preparation rotor 6 is constituted of left and right side-part soil preparation rotors 6b, 6b arranged at left and right both sides of a center soil preparation rotor 6a arranged at a front side of a center float 35 of the seedling transplanter part and the center float 35, and left and right intermediate soil preparation rotors 6c, 6c for soil-preparing a field face of left and right interval parts of the center soil preparation rotor 6a and the left and right side-part soil preparation rotors 6b, 6b in fore-and-aft intermediate positions of the center soil preparation rotor 6a and the left and right side-part rotors 6b, 6b.SELECTED DRAWING: Figure 2

Description

The present invention relates to a passenger-type seedling transplanting machine in which a seedling planting portion is attached to the rear portion of a traveling vehicle body and a ground leveling rotor is arranged on the front side of the seedling planting portion.

In the conventional leveling rotor, the central leveling rotor is arranged on the front side of the center float of the seedling planting portion, and the left and right leveling rotors are arranged on both the left and right sides of the center float. (See, for example, Patent Document 1).

Japanese Unexamined Patent Publication No. 2009-065979

The leveling rotor has a two-stage structure in the front-rear direction of the central leveling rotor and the left and right leveling rotors, and there is a problem that the field at the boundary between the central leveling rotor and the left and right leveling rotors cannot be properly leveled.

The present invention has been made in view of the above, and an object of the present invention is to provide a riding-type seedling transplanting machine capable of properly leveling a field scene and performing good seedling transplanting work.

The invention according to claim 1 is a riding type seedling transplanting machine in which a seedling planting portion 4 is mounted on the rear side of a traveling vehicle body 2 and a ground leveling rotor 6 is provided on the front side of the seedling planting portion 4, and the ground leveling rotor 6 is used as a seedling. Central leveling rotors 6a provided on the front side of the center float 35 of the planting portion 4, left and right side leveling rotors 6b and 6b provided on the left and right sides of the center float 35, central leveling rotors 6a, and left and right side leveling rotors 6b and 6b. This is a passenger-type seedling transplanter composed of left and right intermediate leveling rotors 6c and 6c that level the field scenes at the left and right intervals of the central leveling rotor 6a and the left and right side leveling rotors 6b and 6b at the intermediate position in the front-rear direction.

According to the invention according to claim 1, the central leveling rotor 6a provided with the ground leveling rotor 6 on the front side of the center float 35 of the seedling planting portion 4 and the left and right side leveling rotors 6b, 6b provided on the left and right sides of the center float 35. Left and right intermediate leveling rotors 6c, 6c that level the field scene between the central leveling rotor 6a and the left and right side leveling rotors 6b, 6b at the intermediate position in the front-rear direction between the central leveling rotor 6a and the left and right side leveling rotors 6b, 6b. Since the left and right intermediate leveling rotors 6c and 6c level the field scenes between the central leveling rotor 6a and the left and right side leveling rotors 6b and 6b, the central leveling rotor 6a and the left and right intermediate leveling rotors 6c , 6c and the left and right side leveling rotors 6b and 6b allow the field scene to be properly leveled and good seedling transplanting work can be performed.

According to the second aspect of the present invention, the seedling planting portion 4 is controlled to move up and down based on the vertical movement of the front portion of the center float 35, and the left and right rear wheels 8 of the traveling vehicle body 2 are controlled by the left and right side leveling rotors 6b and 6b. The passenger-type seedling transplanting machine according to claim 1, wherein the wheel marks of No. 8 are leveled.

In the invention according to claim 3, the left and right side ground leveling rotors 6b and 6b have the fastest rotation speed, the left and right intermediate ground leveling rotors 6c and 6c have the second fastest rotation speed, and the central ground leveling rotor 6a has the third fastest rotation speed. The passenger-type seedling transplanting machine according to claim 1 or 2.

The invention according to claim 4 is described in any one of claims 1 to 3, wherein the central leveling rotor 6a, the left and right intermediate leveling rotors 6c, 6c, and the left and right side leveling rotors 6b, 6b have a deeper leveling depth with respect to the field. It is a passenger type seedling transplanting machine.

In the invention according to claim 5, the central leveling rotor 6a and the left and right side leveling rotors 6b and 6b rush into the field scene from the front and rotate backward, and the left and right intermediate leveling rotors 6c and 6c proceed to the field scene. The passenger-type seedling transplanting machine according to any one of claims 1 to 4, which rushes from the rear in the direction and rotates toward the front.

It is a side view of the passenger type rice transplanter of embodiment in this invention. It is a top view of the main part of the embodiment in this invention.

Hereinafter, preferred embodiments of the present invention will be described with reference to the drawings.

<Overall configuration>
FIG. 1 is a side view of a riding-type rice transplanter equipped with a fertilizer application device, which is a typical example of the riding-type seedling transplanting machine of the present invention. In this passenger-type rice transplanter 1 with a fertilizer application device, a seedling planting portion 4 is mounted on the rear side of the traveling vehicle body 2 so as to be able to move up and down via an elevating link device 3, and the main body portion of the fertilizer application device 5 is mounted on the rear upper side of the traveling vehicle body 2. Is provided. Further, a ground leveling rotor 6 is provided at the front portion of the seedling planting portion 4. Further, on both the left and right sides of the front portion of the traveling vehicle body 2, a pair of spare seedling mounting stands Y and Y on which the seedlings for replenishment supported by the support frame are placed are provided.

The left and right directions of the passenger-type seedling transplanter toward the forward direction are referred to as left and right, respectively, and the forward and reverse directions are referred to as front and rear, respectively.

<Running body 2>
The traveling vehicle body 2 is a four-wheel drive vehicle provided with a pair of left and right front wheels 7 and 7 and a pair of left and right rear wheels 8 and 8, which are driving wheels. Left and right front wheel final cases 10 and 10 are provided on the left and right sides of the case 9, and the left and right front wheel axles project outward from each front wheel support portion whose steering direction of the left and right front wheel final cases 10 and 10 can be changed. Front wheels 7 and 7 are attached respectively. Further, the front end portion of the main frame 11 is fixed to the back surface portion of the mission case 9, and the left and right rear wheel gear cases 12 are provided as fulcrums of the rear wheel rolling shafts provided horizontally in the front and rear at the left and right center portions of the rear end of the main frame 11. , 12 are freely rolled, and the left and right rear wheels 8 and 8 are attached to the left and right rear wheel axles that project outward from the left and right rear wheel gear cases 12 and 12.

The engine 13 is mounted on the main frame 11, and the rotational power of the engine 13 is transmitted to the mission case 9 via the belt transmission device 14 and the HST 15. The rotational power transmitted to the transmission case 9 is shifted by the transmission in the case 12, and then separated into traveling power and external extraction power and taken out.

A part of the running power is transmitted to the left and right front wheel final cases 10 and 10 to drive the left and right front wheels 7 and 7, and the rest is transmitted to the left and right rear wheel gear cases 12 and 12 to drive the left and right rear wheels 8 and 8. Drive.

Further, the external extraction power is transmitted to the planting clutch case 16 provided at the rear of the traveling vehicle body 2, then transmitted to the seedling planting portion 4 by the planting transmission shaft 17, and to the fertilizer application device 5 by the fertilization transmission mechanism. Be transmitted.

Further, the driving force is taken out from the left rear wheel gear case 12 and transmitted to the leveling rotor 6 by the leveling rotor drive shaft 18.

The upper part of the engine 13 is covered with an engine cover 19, and a seat 20 is installed on the engine cover 19. In front of the seat 20, there is a front cover 21 having various operation mechanisms built-in, and above the front cover 21, a handle 22 for steering and operating the front wheels 7 and 7 is provided. The left and right sides of the lower ends of the engine cover 19 and the front cover 21 are horizontal floor steps 23. The floor steps 23 are partially in a grid pattern, and mud on the shoes of workers walking on the floor steps 23 falls into the field. The rear part on the floor step 23 is a rear step 24 that also serves as a rear wheel fender.

The elevating link device 3 has a parallel link configuration, and includes one upper link 25 and a pair of left and right lower links 26, 26. These links 25, 26, and 26 are rotatably attached to a rear gate-shaped link base frame 27 whose base side is erected at the rear end of the main frame 11, and a vertical link 28 is connected to the tip side thereof. ing. A connecting shaft 29 rotatably supported by the seedling planting portion 4 is inserted and connected to the lower end of the vertical link 28, and the seedling planting portion 4 is rotatably connected around the connecting shaft 29. An elevating hydraulic cylinder 30 is provided between the support member fixed to the main frame 11 and the tip of a swing arm (not shown) integrally formed on the upper link 25, and the cylinder 30 is hydraulically expanded and contracted. , The upper link 25 rotates up and down, and the seedling planting portion 4 moves up and down while maintaining a substantially constant posture.

<Sapling planting section 4>
The seedling planting section 4 is composed of 7 rows of plants, and the planting transmission case 31 that also serves as a frame, and the mat seedlings are placed and reciprocated left and right to supply the seedlings one by one to the seedling outlet of each row and for one horizontal row. Seedling stand 32 that transfers seedlings downward by the seedling feeding belt 32a that supplies all the seedlings to the seedling outlet, seedling planting device 33 that plants the seedlings supplied to the seedling outlet to the field, It is provided with a pair of left and right line drawing markers 34 and the like for drawing a line on the topsoil surface.

At the lower part of the seedling planting portion 4, a center float 35 is provided in the center, side floats 36 and 36 are provided on both left and right sides thereof, and outer floats 37 and 37 are provided on the left and right outer sides thereof. When the aircraft is advanced with these floats 35, 36, 36, 37, 37 in contact with the mud surface of the field, the floats 35, 36, 36, 37, 37 slide while leveling the mud surface, and the leveling is performed. Seedlings are planted in the traces by the seedling planting device 33. Each float 35, 36, 36, 37, 37 is rotatably attached so that the front end side moves up and down according to the unevenness of the topsoil surface of the field, and the front part of the center float 35 moves up and down during planting work. The seedling planting depth is always increased by switching the hydraulic valve that controls the elevating hydraulic cylinder 30 to move the seedling planting unit 4 up and down according to the detection result detected by the angle-of-attack control sensor (not shown). Keep it constant.

<Fertilizer application device 5>
The fertilizer application device 5 dispenses the granular fertilizer stored in the fertilizer hopper 38 in a fixed amount by the feeding unit 39, and the fertilizer is delivered to the fertilizer guide 41 attached to the floats 35, 36, 36, 37, 37 by the fertilizer application hose 40. It is guided and dropped into the fertilizer application structure formed in the vicinity of the side portion of the seedling planting strip by the groove body 42 provided on the front side of the fertilizer application guide 41. The air generated by the blower 44 driven by the electric motor 43 for the blower is blown into the fertilizer hose 40 via the air chamber 45 long in the left-right direction, and the fertilizer in the fertilizer hose 40 is forcibly conveyed by wind pressure. It has become.

<Leveling rotor 6>
A ground leveling rotor 6 supported by a planting portion frame such as a planting transmission case 31 is provided at the front portion of the seedling planting portion 4.

The ground leveling rotor 6 is provided in front of the center float 35 at the foremost part and in front of the central leveling rotor 6a for leveling the field scene in front of the center float 35, and in front of the side floats 36, 36 and the outer floats 37, 37 at the rearmost part. The left and right side leveling rotors 6b and 6b, and the central leveling rotor 6a and the left and right side leveling Left and right intermediate leveling rotors 6c, 6c that level the front field scene of the side floats 36, 36 and the field scenes of the central leveling rotor 6a and the left and right side spacing rotors 6b, 6b at the intermediate position in the front-rear direction of the rotors 6b, 6b. Consists of.

Left and right rotor support frames 60L fixed to the planting transmission case 31. Left and right rotor transmission cases 61L. A front drive shaft 62F is pivotally supported on the front portion of the 61R, and four rotor pieces 63 are mounted on the front drive shaft 62F so as to rotate integrally to form a central leveling rotor 6a. Further, the left and right rotor transmission cases 61L. Left and right intermediate drive shafts 62M and 62M are provided in the middle of 61R in a state of protruding outward, and three rotor pieces 63 are mounted on the left and right intermediate drive shafts 62M and 62M so as to rotate integrally with each other. It constitutes rotors 6c and 6c. Further, the left and right rotor transmission cases 61L. The left and right rear drive shafts 62B and 62B are provided at the rear of the 61R so as to project outward, and the left and right rotor support frames 60L. The left and right rear drive shafts 62B and 62B are rotatably supported by a shaft support 64 whose base is fixed to 60R, and eight rotor pieces 63 are mounted on the left and right rear drive shafts 62B and 62B so as to rotate integrally with the left and right side leveling rotors 6b and 6b. Consists of.

The drive system of the leveling rotor 6 is transmitted to the rear part of the left rotor transmission case 61L by the leveling rotor drive shaft 18 from which the driving force is taken out from the left rear wheel gear case 12. Then, in the rear portion of the left rotor transmission case 61L, the leveling rotor drive shaft 18 drives and rotates the left rear drive shaft 62B with a pair of left rear first bevel gears 65L1 and a pair of left rear second bevel gears 65L2 for left rotor transmission. The left drive shaft 66L in the case 61L is driven and rotated.

The left intermediate drive shaft 62M is driven by a pair of left intermediate bevel gears 67L from the middle part of the left drive shaft 66L in the left rotor transmission case 61L, and the front drive shaft 62F is driven by a pair of left front bevel gears 68L from the front part of the left drive shaft 66L. Drive and rotate.

The right drive shaft 66R in the right rotor transmission case 61R is driven and rotated by a pair of right front bevel gears 68R from the front drive shaft 62F in the front portion of the right rotor transmission case 61R.

The right middle drive shaft 62M is driven by a pair of right middle bevel gears 67R from the middle part of the right drive shaft 66R in the right rotor transmission case 61R, and the right rear drive shaft 62B is driven by a pair of right rear bevel gears 65R from the rear part of the right drive shaft 66R. Drive and rotate.

The gear ratios of the pair of left rear first bevel gears 65L1, the pair of right rear bevel gears 65R, the pair of left intermediate bevel gears 67L, the pair of right intermediate bevel gears 67R, the pair of left front bevel gears 68L, and the pair of right front bevel gears 68R are on the left and right sides. The rotation speeds of the partial ground leveling rotors 6b and 6b are the fastest, the rotation speeds of the left and right intermediate ground leveling rotors 6c and 6c are the second fastest, and the rotation speed of the central ground leveling rotor 6a is the third fastest.

Therefore, since the rotation speed of the central leveling rotor 6a provided in front of the center float 35 at the foremost part and leveling the field scene in front of the center float 35 is slowed down, the rotation speed of the central leveling rotor 6a causes the rotation of the central leveling rotor 6a to the front part of the center float 35. The influence can be minimized, and the raising and lowering control of the seedling planting portion 4 based on the vertical movement of the front portion of the center float 35 can be appropriately performed. Therefore, the planting depth of the seedlings becomes appropriate, and good rice planting work can be performed.

Further, since the rotation speeds of the left and right side ground leveling rotors 6b and 6b for leveling the wheel marks of the left and right rear wheels 8 and 8 are increased, the wheel marks of the left and right rear wheels 8 and 8 can be appropriately leveled.

In addition, the field in front of the side floats 36 and 36 at the intermediate position in the front-rear direction between the central leveling rotor 6a and the left and right side leveling rotors 6b and 6b, and the field between the left and right side spacing rotors 6a and the left and right side leveling rotors 6b and 6b. The left and right intermediate leveling rotors 6c and 6c are provided to level the surface, and the rotation speed of the left and right intermediate leveling rotors 6c and 6c is faster than the central leveling rotor 6a and slower than the left and right side leveling rotors 6b and 6b. It is possible to level the field scenes between the central leveling rotor 6a and the left and right side spacing rotors 6b and 6b.

Then, the ground leveling depth with respect to the field is increased in the order of the central leveling rotor 6a, the left and right intermediate leveling rotors 6c, 6c, and the left and right side leveling rotors 6b, 6b. In other words, the more the rotor on the front side, the shallower the depth that acts on the field scene, so it is possible to prevent the situation where the leveling rotor 6 sneaks into the field.

Then, the central leveling rotor 6a and the left and right side leveling rotors 6b and 6b rotate forward (rush into the field scene from the front and rotate backward), and the left and right intermediate leveling rotors 6c and 6c reverse (progress to the field scene). It rushes from the rear and rotates toward the front).

Therefore, the left and right intermediate leveling rotors 6c, which level the field scene between the central leveling rotor 6a and the left and right side leveling rotors 6b, 6b at the intermediate positions in the front-rear direction between the central leveling rotor 6a and the left and right side leveling rotors 6b, 6b, Since 6c is reversed, the rippling of the field scene due to mutual rotation can be canceled out, and good leveling can be performed.

2 Traveling vehicle body 4 Seedling planting part 6 Leveling rotor 6a Central leveling rotor 6b Side leveling rotor 6c Intermediate leveling rotor 8 Rear wheel 35 Center float

Claims (5)

In a riding type seedling transplanting machine in which a seedling planting portion (4) is mounted on the rear side of the traveling vehicle body (2) and a ground leveling rotor (6) is provided on the front side of the seedling planting portion (4), the ground leveling rotor (6) is provided. The central leveling rotor (6a) provided on the front side of the center float (35) of the seedling planting portion (4), the left and right side leveling rotors (6b, 6b) provided on the left and right sides of the center float (35), and the central leveling. Left and right middle to level the field scene at the left and right spacing between the central leveling rotor (6a) and the left and right side leveling rotors (6b, 6b) at the intermediate position in the front-rear direction between the rotor (6a) and the left and right side leveling rotors (6b, 6b). A passenger-type seedling transplanting machine characterized by being composed of a leveling rotor (6c, 6c). The seedling planting part (4) is controlled to move up and down based on the vertical movement of the front part of the center float (35), and the left and right rear wheels (8) of the traveling vehicle body (2) are controlled by the left and right side leveling rotors (6b, 6b). , 8) The passenger-type seedling transplanting machine according to claim 1, wherein the wheel traces are leveled. The left and right part of the ground leveling rotor (6b, 6b) has the fastest rotation speed, the left and right intermediate leveling rotors (6c, 6c) have the second fastest rotation speed, and the central leveling rotor (6a) has the third fastest rotation speed. The passenger-type seedling transplanting machine according to claim 1 or 2, wherein the seedling transplanting machine is characterized by the above. Any one of claims 1 to 3, wherein the ground leveling depth is deeper with respect to the field in the order of the central leveling rotor (6a), the left and right intermediate leveling rotors (6c, 6c), and the left and right side leveling rotors (6b, 6b). The riding type seedling transplanting machine described in the section. The central leveling rotor (6a) and the left and right side leveling rotors (6b, 6b) rush into the field scene from the front and rotate backward, and the left and right intermediate leveling rotors (6c, 6c) enter the field scene in the direction of travel and rearward. The passenger-type seedling transplanting machine according to any one of claims 1 to 4, wherein the seedling transplanter rushes in from and rotates forward.

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