JPS599553Y2 - rice transplanter - Google Patents

Description

[Detailed description of the invention] The present invention provides a driving side crankshaft and a driven side crankshaft for a pair of left and right planting claw support members, and also provides three planting claw support members on both outer sides and in the middle of these planting claw support members. Regarding a rice transplanter in which a planting arm is arranged and a planting claw is provided on each of the planting arms, an attempt is made to simplify and reduce the weight of the drive structure of the planting claw, and to reduce the assembling trouble caused by this. It also aims to solve production problems.

In order to achieve the above object, the present invention features a structure or
In a rice transplanter in which three planting arms are arranged at both outer positions and an intermediate position of a pair of left and right planting claw support members, and a planting claw is attached to the tip of each planting arm. , the crankshaft for driving each of the planting arms is divided into two parts at an intermediate position between the pair of left and right planting claw support members, and the crank main shaft portion of one of the divided crankshafts is connected to the pair of left and right planting claws. pivotally connected to one of the support members;
A crank main shaft portion of the other crankshaft is pivotally connected to the other planting claw support member, and a crank pin that pivotally supports the planting arm at the intermediate position is integrated with the crank arm attached to the one crank main shaft. For crank arms attached to the other crank shaft,
The two crank main shafts are interlocked and connected via a flexible fitting connection that allows relative movement due to eccentricity of the axes of the two crankshafts, and this structure provides the following effects.

In other words, by interlocking the crankshafts, it is possible to simplify the power transmission structure in one of the pair of left and right planting claw support members, and to reduce the overall weight. By interlocking and connecting the crankshafts with a flexible fitting connection part, it is possible to absorb the eccentricity of their axes. The problem that arises from achieving simplification and weight reduction, namely, the inconvenience of requiring high precision in manufacturing and assembly in order to precisely align the crank axes of each support member, is eliminated. It's fine.

Embodiments of the present invention will be described in detail below based on the drawings.

The figure shows a machine body consisting of a front engine 1, a rear seedling planting device, a control handle 2 extending rearward and upward from near the seedling planting device, and a plurality of floats 3 sliding across a field.
...and a pair of left and right propulsion wheels 4 that run while touching the hard surface.
, 4 shows a walking rice transplanter that moves forward while supporting the field at an appropriate height, and as it progresses, the seedling planting device is used to plant the three rows of rice in the field as described below. has been done.

That is, the seedling tray 5 is equipped with an inclined position that reciprocates with a constant stroke in the lateral direction, and the three seedling trays rotate along a constant circulation trajectory between the lower end of the seedling tray 5 and the mud. The attached claws 6 a, 6 b, and 6 C are arranged side by side at regular intervals in the lateral direction.

Then, the seedlings are taken out one by one along the lower end row of the seedling group placed on the seedling stand 5, and the planting claws 6a...
Pushing tool 7, which operates when ... reaches near the mud.
While pushing out the seedling from the claw 6 and separating it,
The field is set up so that three rows of seedlings are planted.

Next, the drive structure of the planting claws 6a will be explained based on FIGS. 2 and 4.

That is, the planting claws 6a... are connected to and supported by the planting mission case 8, which is an example of a planting claw support member to which engine power is transmitted, and the support member 1.
Three planting arms 11a, 1lb, 11c are arranged at both left and right outer positions of a pair of left and right planting claw support members consisting of 3 and at an intermediate position of both planting claw support members.
Each of the planting arms 11a, 1lb, 11c is attached to the tip position of
The planting transmission case 8 side, which is a planting claw support member to which the engine power is transmitted, is pivotally supported by a crankshaft divided at an intermediate position between a pair of left and right planting claw support members. The crank main shaft 9 of one crankshaft is pivotally connected, and the support member 13, which is the other planting claw support member to which engine power is not transmitted, has the crank main shaft 1 of the other divided crankshaft.
The four parts are pivoted.

At both ends of the crankshaft 9 that protrude outside the case,
Crank arms 10a, 10b are fixed, and the planting claws 6a...
The middle parts of the planting arms 11a and 11b, which support the rightmost one 6a and the center part 6b at their tips, are pivotally connected.

Furthermore, the rear ends of the planting arms 11a, 1lb are connected to and supported by the planting mission case 8.
, 12b.

Further, a crank arm 10C is fixed to one end of the crank main shaft 14 on the side of the support member 13 provided on the lateral side of the planting mission case 8, and this arm 10C
At the tip of the planting nail 6a..., the leftmost one 6C. The middle part of the planting arm 11C supported at the tip thereof is pivotally connected, and the rear end of the planting arm 11C is supported by the swinging arm 12 connected to the support member 13.
It is pivotally connected to the tip of C.

Furthermore, a crank arm 10 is attached to the other end of the rotating shaft 14.
The base 15 of the crank arm 10b' is fixed, and as shown in FIG. 4, the free end of the crank arm 10b' is pivotally connected to a crank pin 20 formed integrally with the crank arm 10b. ing.

Therefore, the planting claws 6a are configured to circulate up and down as the crankshaft 9 rotates as described above.

A long hole 19 is formed in the crank arm 10b' along the longitudinal direction of the crank arm 10b', and a planting arm 11b, which is integrally connected to the drive side crank main shaft 9, is connected to the long hole 19. engage the crank pin 20 of
Therefore, even if there is any deviation between the shaft centers of the driving side crank main shaft 9 and the driven side crank main shaft 14, which are pivotally connected to each of the planting nail support members, due to manufacturing or assembly, this deviation can be corrected by the above-mentioned length. It is arranged so that it can be absorbed through the holes 19.

Further, the driven side crank arm 10b' is spline-fitted to the driven side crank main shaft 14 so as to be able to slide in the axial direction. The planting arm 11b located between the planting claw support members can be assembled in the assembled state by being detachably attached to the crank pin 20 integrally formed on the crank main shaft 9 of the planting arm 11b. It has been done.

The spline portion of the crank main shaft 14 on the driven side includes:
A mudguard cover 21 made of resin and having a C-shaped cross section is elastically fitted.

The drive structure of the extrusion tool 7 will be explained.

In addition, each extrusion tool 7... is driven in the same way, and an extrusion tool provided corresponding to the central one 6b of the planting claws 6a... The tool 7 will be explained based on FIG.

That is, this extrusion tool 7 is supported by the planting arm 1lb so that it can move forward and backward along the nail blade, and is supported by the spring 16.
He is being encouraged to retire.

Further, in the planting arm 1lb, there is an L-shaped link 17.
are pivotally connected, one end of this link 17 is abutted and connected to the pushing tool 7, and the other end of this link 17 is connected to a projection 18 fixed to the tip of the crank arm 10b.
It is abutted and connected to the cam body 18 with a.

As the link 17 comes into contact with the protrusion 17a and is swung, it is configured to move toward the tip of the claw.

[Brief explanation of the drawing]

The drawings show an embodiment of the rice transplanter according to the present invention, in which Fig. 1 is an overall side view, Fig. 2 is a side view of a partially broken main part, Fig. 3 is a plan view of a partially broken main part, and Fig. 4 is a partially broken side view of the main part. The figure is a partially cutaway plan view of the main part, and FIG. 5 is a partially cutaway side view of the main part. 6a, 6b, 6C... Planted nail, 8, 1
3... Planting nail support member, 9, 14...
Crank main shaft, 10a, 10b, 10 b', 10
C...--Crank arm, 11 a, 11
b, 11 C... Planting arm, 19...
...Fitting connection part, 20...Crank pin.

Claims (1)

[Scope of utility model registration request] Three planting arms lla, 1lb, 11C are arranged at both outer positions and an intermediate position of the pair of left and right planting claw support members 8, 13, and each planting arm 11
a, 11 b, 11 C (7) Planted claw 6 at the tip
In the rice transplanter equipped with the planting arms 11a, 6b, and 6C, a crankshaft for driving each of the planting arms 11a, 11b, and 11C is mounted at an intermediate position between the pair of left and right planting claw support members 8 and 13. The crankshaft 9 portion of one of the divided crankshafts is pivotally connected to one of the pair of left and right planting pawl support members 8, 13, and the crankshaft 14 portion of the other crankshaft is attached to the other planting claw support member 8, 13. A crank pin 20, which is pivotally attached to the attachment support member 13 and pivotally supports the planting arm 11b at the intermediate position, is integrally formed with the crank arm 10b attached to the one crank main shaft 9, and is attached to the other crank arm 10b. For the crank arm 10t5 attached to the crank main shaft 14, both crank main shafts 9, 1
A rice transplanter characterized in that the rice transplanter is interlocked and connected via a fitting connection part 19 that has flexibility to allow relative movement due to eccentricity of the four axes.