JPS5841787Y2 - Rice transplanter seedling stand - Google Patents

Description

[Detailed Description of the Invention] This invention relates to a seedling platform that is installed obliquely in the planting section of a rice transplanter and on which a seedling mat to be planted in a field is placed.

In other words, this invention is a new seedling transplanter for a rice transplanter that makes it extremely easy to transfer seedlings to the seedling cloak placed on the seedling stand as described above, and does not cause any other inconveniences. It is intended to provide a platform for mounting.

Regarding the illustrated embodiment, to explain the structure of the seedling stand of the rice transplanter according to this invention, as shown in FIG. A support frame F made of pipe material is connected in a vertically movable manner by a pair of left and right lower links 2, and an upward link is connected to a rising frame portion 3 in the form of a gate that slopes forward and upward at the front end of the support frame F. One top link 4 and a pair of left and right lower links 5 connect the planting part P so that it can rise and fall freely, and the machine T pulls the planting part P while driving the machine in a flooded field. This invention has been implemented in the following manner in a riding rice transplanter configured to perform rice transplanting work.

That is, as is usual, the planting part P includes a seedling platform 6 which is inclined downwardly in the case shown in the figure, and is placed at the lower end of the slope of the seedling platform 6 and rotates along a certain trajectory. A planting arm 7 that can be moved horizontally and reciprocally.
A planting arm 7 plunges into the seedling take-out port 6a of the seedling tray 6, cuts and grips the seedlings from the seedling mat (not shown) on the seedling stand 6, and inoculates the field with the downward rotating end. , a planting unit transmission 8 that supports the seedling stand 6 and the planting arm 1 and transmits power to the driven body 6 1 , and supports the above planting members 6 , 7 , 8 from below. According to this invention, the seedling stand 6 in the planting section P is constructed as follows.

That is, the seedling table 6 is linearly inclined as shown in FIG. 1, but as shown in FIG. The length is such that a plurality of (two in the illustrated case) seedling mats can be placed in series in each seedling placement section 6A.

A plurality of seedlings (four in the case of illustration) are arranged in parallel in the width direction of the seedling table 6 approximately at the center in the length direction of the seedling table 6.
A through hole 10 is bored in each seedling loading section 6A, and a stopper 11 equipped with a stopper arm 11a that extends from the lower side of the seedling loading table 6 to the upper surface through the through hole 10 is attached to the seedling loading table 6. It is provided for.

In addition, two through holes 12 are bored in each seedling compartment 6A in parallel with each other in the width direction of the seedling stage 6 at a suitable short distance above the lower end of the seedling stage 6. A seedling succession sensor 13 equipped with a sensor arm 13a that appears and retracts from the lower surface side of the seedling platform 6 to the upper surface is provided on the seedling platform 6.

To explain in more detail, as shown in FIGS. 3-6, the stopper 11 is constructed by integrally protruding a plurality of stopper arms 11a from the tip of a plate having a support tube 14 at the base end. This stopper 11 is supported so as to be movable up and down by having a gate-shaped support frame 15 fixed to the lower surface of the seedling stand 6 support a fulcrum shaft 16 inserted through the support tube 14. ing.

The seedling succession sensor 13 is also constructed by integrally protruding two sensor arms 13a from the tip of a plate body equipped with a support tube 17 at the base end. The above-mentioned support tube 1 is attached to a gate-shaped support frame 18 that is fixed to the bottom surface of the stand
By supporting a fulcrum shaft 19 that is inserted through 1, it is supported so as to be vertically movable.

The stopper 11 and the seedling splicing sensor 13 are each formed into a bell crank shape by protruding connecting arms 20 and 21 having connecting tubes 20a and 21a at the tips of the support tubes 14 and 17, respectively. The connection cylinder 20a is connected between the two connection arms 20 and 21 by a connection link 22 having connection cylinders 22at22b at both ends.

22a and the connecting tube 21at22b through pins 23 and 24 inserted across them, respectively.

Due to the above connection between the stopper 11 and the seedling transfer sensor 13, when the sensor arm 13a is recessed from the top surface of the seedling platform 6 as shown by the chain line in FIG. On the other hand, when the sensor arm 13a protrudes above the seedling table 6 as shown by the solid line in FIG. The sensor 13 and the stopper 11 are rotated in the direction shown by the solid lines in FIG. 3 by a spring 25 stretched between the seedling succession sensor 13 and the support frame 18, that is, the sensor arm 13a is rotated to the position shown in the solid line in FIG. The stopper arm 11a protrudes above the seedling stand 6 and is rotated in a direction in which the stopper arm 11a is retracted from the upper surface of the seedling stand 6.

As shown in FIG. 2, the upper surface of the seedling table 6 is formed with a large number of isolated convex portions 26 (not shown in FIG. 3) arranged in a hand-shaped manner. This is intended to give the smoothness of the slide.

2. In FIG. 1, S indicates an auxiliary support provided by extending the support frame F to the rear of the planting part P and supporting a rear upwardly inclined gate-shaped rising part 27 formed at the extending end. This riding part S is a riding part for a worker, and this riding part S includes a passenger seat 28 for an auxiliary worker, a platform 29 below the front of this passenger seat 28, and a seat 29 that stands up slightly tilted forward from the front end position of this platform 29. The structure includes a guardrail 30 and the like.

Similarly, in FIG. 1, 31 is the rear wheel of this machine T, 32 is a passenger seat of this machine T, 33 is a hydraulic lift arm provided on this machine T, and 34 is a link between this hydraulic lift arm 33 and the lower link 2. The connecting tie rod is used to raise the planting part P along with the support frame F by the lifting operation of the hydraulic lift arm 33. 36 is a transmission shaft that transmits power from the machine T in the direction of the planting part P, 31 is the machine T The supporting frame F is pulled upwardly by a pair of left and right auxiliary springs stretched between the supporting frame F and the support frame P, and 38 is a spring tensioned between the upright frame portion 3 of the supporting frame F and the planting portion P. A pair of left and right auxiliary springs is provided to support the planting portion P by pulling it upward.

Similarly, in FIG. 1, reference numeral 39 indicates a preliminary seedling platform supported by the seedling platform 6, and 40 indicates a left and right 1 supported by the rising portion 27 of the support frame F via a parallel link 41 so as to be movable up and down. A pair of tail wheels supporting the passenger part S from below is a manual hydraulic jack 42 that raises and lowers the tail wheel 40 via the parallel link 41 and changes and adjusts the vertical position of the tail wheel 40.

The rice planting work using the illustrated riding rice transplanter is carried out as usual by the planting part P while the machine T is towing the planting part P and traveling as described above, and in that case, When an auxiliary worker rides on the riding section S and performs auxiliary work such as monitoring the status of planting by the planting section P and replenishing seedlings from the preliminary seedling platform 39 to the seedling platform 6, the machine T The worker sitting on the passenger seat 31 of the invention only needs to concentrate on operating the machine T, which greatly reduces the burden and fatigue. 6 is constructed as described above, and has the following advantages in particular.

That is, in each seedling loading section 6A of the seedling loading table 6, seedling pine) Ml,
When the upper end of the lower seedling mat M1 is located above the through hole 12 as shown by the chain line in FIG.
Since the sensor arm 13a of the seedling mat M1 is pushed down against the force of the spring 25 and assumes a retracted posture, the stopper arm 11a of the stopper 11 protrudes above the seedling stand 6 as shown by the chain line. This prevents the upper seedling mat M2 from moving downward.

Therefore, even if a plurality of seedling mats are placed in series in each seedling loading section 6A, the load of the upper seedling mat M2 does not act on the lower seedling mat M1, and the lower seedling mat M
This will prevent the seedlings from crumbling and peeling as described in step 1.

Therefore, a plurality of seedling mats can be placed vertically in series on the seedling platform 6 without any inconvenience, and thereby the preliminary seedling platform 3
The frequency of transferring seedlings from above 9 to the seedling platform 6 can be extremely reduced, and even if the seedling platform 6 is linear as shown in the figure and has a shape that makes it easy for the upper seedling mat M2 to slip. Since the upper seedling mat M2 is prevented from slipping by the stopper 11 and no influence is exerted on the lower seedling mat M1, no inconvenience is caused, and the production cost can be reduced by making the seedling platform 6 linear. It will also be possible.

Then, the seedling mat M1 on the lower side is consumed, and the third seedling mat M1 is consumed.
As shown by the solid line in the figure, the sensor of the seedling succession sensor 13
When the arm 13a is out of position, the force of the spring 25 causes the seedling transfer sensor 13 to rotate in the protruding direction of the sensor arm 13a, and the stopper 11 to rotate in the retracting direction of the stopper arm 118, as shown by the solid line in FIG. Since the state shown in the figure is obtained, the seedling mat M on the upper side
2 slides on the surface of the seedling platform 6 and moves downward, and the seedlings are automatically spliced on the seedling platform 6 itself.

When seedlings are transferred from the preliminary seedling platform 39 to the seedling platform 6, the new seedling mat is prevented from moving downward by the stopper 11, so that the new seedling mat is placed on the lower stage. It is no longer necessary to take care to place the seedlings on the seedling stand 6 so as not to affect the seedling mats.
Therefore, the seedling splicing operation itself from above the preliminary seedling mounting table 39 becomes easy.

As described above, in the seedling stand of the rice transplanter of this invention, the length L along the inclination direction of the seedling stand 6 is set to a length that allows a plurality of seedling mats to be placed in series, A stopper 11 that appears on the upper surface of the seedling stand 6, and 2 that are arranged in series at the protruding position.
Upper seedling mat M2 of adjacent seedling mats M12M2
A stopper 11 is provided to prevent the seedling mat M1 from moving, and a seedling transfer sensor 13 is provided to detect the descent of the upper end of the lower seedling mat M1 to the expected position.
is connected to the stopper 11 in such a way that the stopper 11 is retracted by the detection operation of the seedling transfer sensor 13, which minimizes the frequency of seedling transfer onto the seedling platform, and also prevents the seedlings from being transferred onto the seedling platform. The present invention automatically transfers seedlings from the upper side to the lower side, and also facilitates the transfer of seedlings from a spare seedling stand, etc., and thus makes the transfer of seedlings extremely easy as a whole. And, in spite of this, there is no adverse effect from the upper seedling mat on the lower seedling mat.

[Brief explanation of the drawing]

Fig. 1 is a side view showing the rear half of a riding rice transplanter equipped with an embodiment of this invention, Fig. 2 is a partial plan view of its main parts, and Fig. 3 is a vertical cross-sectional side view of the main parts. FIG. 4, FIG. 5, and FIG. 6 are perspective views of main parts of the same embodiment. P... Rice transplanting device, 6... Seedling stand, 10... Through hole,
11... Stopper 11a... Stopper arm, 12... Through hole, 13... Seedling splicing sensor, 13a
...Sensor arm, 14... Support tube, 16... Fulcrum shaft, 1γ... Support tube, 19... Fulcrum shaft, 20.21
... Connection arm, 22 ... Connection link, 23, 24
...Bin 25...Spring, Ml, M2...
Seedling mat.

Claims (1)

[Scope of utility model registration request] The length along the slope direction of the seedling platform is set to a length that allows multiple seedling mats to be placed in series, and the stopper that appears on the top surface of the seedling platform is used to stop two adjacent seedlings in series at the protruding position. A stopper is provided to prevent the movement of the seedling mat on the upper side of the pine, and a seedling transfer sensor is provided to detect the descent of the upper end of the lower seedling mat to the planned position, and this seedling transfer sensor is attached to the stopper. A seedling mounting stand for a rice transplanter characterized by being connected so that a stopper can be retracted and moved by the detection operation of a seedling succession sensor.