JPH0453218Y2 - - Google Patents

Description

[Detailed Description of the Invention] [Industrial Field of Application] The present invention relates to a seedling bed floating prevention device for a rice transplanter that prevents the seedling beds placed and supplied on a seedling mounting table from floating up.

[Prior art]

The seedbed floating prevention device installed on the conventional seedling table has a horizontal resistance shaft that rotates around a fixed position, and a floating prevention rod that extends vertically to prevent the seedbed from floating. The structure was such that the proximal end of the tube was fixed.

[Problem that the invention attempts to solve]

By the way, in the above-mentioned conventional structure, the lifting prevention rod rotates up and down around the resistance axis at a fixed position, so the lifting prevention rod in contact with the seedling surface changes due to changes in the thickness of the seedbed. The angle changes, and the lifting prevention rod cannot be adjusted up and down parallel to the thickness of the seedbed, causing the seedbed to partially float up from the bottom of the seedling stand, or press the seedbed too much in parts, causing the seedbed to collapse. There were drawbacks such as problems such as hindrance to vertical feeding.

Therefore, in view of the above-mentioned conventional situation, the present invention was developed by
It was created to solve this drawback,
Although the mechanism is simple, by operating a single operating lever, the floating preventer can be adjusted up and down in parallel to the thickness of the seedbed in response to changes in the thickness of the seedbed, and it can also be used when feeding the seedbed, etc. It is an object of the present invention to provide a seedbed floating prevention device for a rice transplanter that is capable of retracting a floating prevention body out of the system.

[Means for solving problems]

To achieve the above object, the present invention provides a seedling bed floating prevention device for a rice transplanter, in which a floating preventing body is disposed for the seedling bed to prevent the seedling bed from floating up from the seedling stand. The blocking body is interlocked and connected to a floating blocking body position changing operating lever via a parallel moving device, and the parallel moving device is connected to an arm with a long hole disposed in a direction intersecting the operating lever, and parallel to the arm. a guide plate having a linear guide groove disposed within the rotation axis of the arm, and further comprising:
An automatic shunting device comprising an upper guide groove extending in a direction intersecting the guide groove is provided at the tip of the guide groove, and the seedling holder is further fixed to the long groove of the arm and the guide groove of the guide plate. It is characterized by the insertion of a stop fulcrum shaft.

[Effect]

Therefore, despite the simple mechanism, by one-touch operation of a single operating lever, it is possible to adjust the floating preventer to move up and down parallel to the thickness of the seedbed in response to changes in the thickness of the seedbed, and When supplying a seedbed, etc., the floating preventer can be evacuated outside the system.

〔Example〕

Next, embodiments of the present invention will be described in detail based on the drawings.

As shown in FIG. 3, the rice transplanter 1 has an engine 2 mounted on the front of the machine, and axles 3 are mounted on both sides of the axle 3, which is driven by a transmission device (not shown) driven by the engine 2. A pair of left and right transmission cases 4, 4 that swing vertically around the center are separately provided, and the rear end of each transmission case 4 has a transmission case 4.
Wheels 5 driven by an internal transmission device (not shown) are pivotally supported, and the rice transplanter 1 is driven by these left and right wheels 5.

A center float 6 that slides on the rice field is arranged below the aircraft in the front-rear direction, side floats 7 are arranged on both sides of the main float 6, and a diagonal rear float 7 is arranged at the rear of the aircraft. A pair of left and right operating handles 9 are fixed, and a seedling stand 10 extending diagonally backward along the operating handles 9 is disposed in front of the operating handles 9 so as to be movable back and forth in the left-right direction.

A seedbed 12 of pine seedlings is placed and supplied on the bottom surface 11 of the seedling platform 10, and a seedling planting device that moves on an elliptical planting trajectory is mounted on the body below the seedling platform 10. 13 is arranged, and this seedling planting device 1
A planting claw 14 is provided at the tip of the seedbed 12 to sequentially divide the seedbed 12 into individual plants, hold the seedbed 12, and plant it on the rice field. Further, a seedling receiving plate 15 is provided at the lower end of the seedling platform 10 to support the lower end of the seedling bed 12, and a seedling retrieving port (not shown) through which the planting claw 14 passes is opened in the seedling receiving plate 15. . The seedling planting device 13 and the seedling platform 10 are driven via a rear transmission case 16 in which a transmission device (not shown) driven by the engine 2 is installed.

As shown in FIGS. 1 and 2, a pair of left and right brackets 21, 21, which are formed in a chevron shape when viewed from the side, are erected and fixed on both sides of the lower part of the seedling stand 10. 21, 21 are connected and fixed at their lower sides by a connection bracket 22. A bearing member 23 is fixed above the center of each of the brackets 21 and the connecting bracket 22, and a rotating shaft 25 provided over the entire width of the seedling stand 10 can be rotated by each bearing member 23. One shaft end of the rotating shaft 25 is prevented from coming out by a retaining ring 26, and an operating lever 27 in a direction perpendicular to the rotating shaft 25 is fixed to the other shaft end. A grip 29 is provided at the tip of this operating lever 27.

This operation lever 27 is guided by a guide 30 fixed to the side surface of the bracket 21, so that
The rotating shaft 25 is configured to be able to change and fix its position freely over a predetermined angle around the axis, and the guide 30 has a number of recesses along the radius around the axis of the rotating shaft 25. 31 are provided.

This operating lever 27 is interlocked and connected to the floating prevention body 35 via a parallel displacement device 50.
This parallel displacement device 50 is constructed as follows.

That is, the operating lever 27 is attached to the rotation shaft 25.
Arms 32 extending in a direction substantially perpendicular to the direction of the operation lever 27 are each fixed at three locations, approximately in the center and on both left and right sides. It is provided. Each arm 32 passes through a long hole (not shown) opened in the connecting bracket 22 and extends to the back side of the connecting bracket 22, and at this position, a seedling holder parallel to the rotation axis 25 is inserted into the long hole 33 of each arm 32. A retaining fulcrum shaft 34 is slidably inserted into the seedling receiving fulcrum shaft 34, and both ends of the seedling receiving fulcrum shaft 34 are prevented from coming out.

The base ends of a plurality of floating prevention bodies 35 are each fixed to this seedling floating supporting fulcrum shaft 34. Although this lifting prevention body 35 is made of a round bar in the embodiment, it may be made of a plate material. This floating prevention body 35 is connected to a vertical conveying belt 36 whose conveying surface is provided along the bottom plate 11 of the seedling stand 10.
When viewed from the side, the seedling-floating action part S is arranged parallel to the bottom plate 11 of the seedling stand 10 over the entire length at a long distance.

Further, a plurality of guide plates 40 are fixed to the back side of the connection bracket 22, and the seedling receiving fulcrum shaft 34 is slidably inserted into the diagonal guide groove 41 provided in the guide plate 40. A guide rod 43 having the same diameter as the seedling receiving fulcrum shaft 34 is fixed to the portion of the seedling receiving fulcrum shaft 34 that is inserted into the guide groove 41, and the operating lever 2
The elongated hole 33 of the arm 32 swings with the rotation of 7.
The seedling-receiving fulcrum shaft 34 that moves therein further slides in the guide groove 41 of the guide plate 40, so the floating prevention body 35 fixed to the seedling-receiving fulcrum shaft 34 has its lifting prevention action portion. S total length is the first
It moves vertically in parallel as shown in the figure.

To explain this with reference to FIGS. 1 and 5, as shown in FIG.
When operated in the A recess of the seedling receiving fulcrum shaft 34
and the guide rod 43 are located below the guide groove 41 as shown in FIG. It's becoming like that. Moreover, when the operating lever 27 is operated to the B recess of the guide 30 as shown in FIG.
moves above the guide groove 41 as shown in FIG. There is.

Furthermore, when the operating lever 27 is operated into the C recess of the guide 30 as shown in FIG.
1 to the top end.

In addition, a floating prevention body 35 that moves vertically in parallel
An automatic shunting device 55 is attached to the vehicle, and this automatic shunting device 55 is constructed as follows. That is, above the guide groove 41 provided in the guide plate 40, there is an upper guide groove 44 bent forward at 90 degrees.
A tension spring 45 is provided between the seedling receiving fulcrum shaft 34 and the lower end of the connection bracket 22.

Therefore, when the operating lever 27 is operated to the D recess as shown in FIG. Due to the biasing force of the tension spring 45, it can be moved into the upper guide groove 44 and automatically changed direction by about 90 degrees. In this way, simply by operating the operating lever 27 to the top of the guide 30, the floating prevention body 35 automatically retracts to the open position K, which is displaced by approximately 90 degrees from the seedling floating position N. Supplying the seedbed 12 to the table 10
Alternatively, removal and the like can be carried out efficiently without damaging the seedlings in the nursery.

[Effect of idea]

As described above, the present invention provides a seedbed floating prevention device for a rice transplanter that is equipped with a floating prevention body that prevents the seedbed from floating from the seedling platform, in which the floating prevention body is moved via a parallel displacement device. The parallel moving device is interlocked and connected to an operating lever for changing the position of the floating prevention body, and the parallel moving device is connected to an arm with a long hole disposed in a direction intersecting the operating lever, and an arm that is arranged parallel to the arm and that rotates the arm. An automatic shunting device comprising a guide plate having a linear guide groove disposed within a moving trajectory, and further comprising an upper guide groove extending in a direction intersecting the guide groove at the tip of the guide groove. Furthermore, the seedling receiving fulcrum shaft to which the floating preventer is fixed is inserted into the long groove of the arm and the guide groove of the guide plate, so that despite the simple mechanism, one-touch operation using a single operating lever is possible. This allows the floating preventer to be adjusted up and down in parallel with the thickness of the seedbed in response to changes in the thickness of the seedbed, and also allows the floating preventer to be evacuated outside the system when feeding the seedbed. can.

[Brief explanation of the drawing]

The drawings show one embodiment of the present invention, with Fig. 1 being an enlarged side view of the main parts with some parts simplified, Fig. 2 being a plan view of the main parts, and Fig. 3 being an overall side view of the rice transplanter. , 4th
The figure is a perspective view of the main part, and FIG. 5 is an explanatory view of the operation. DESCRIPTION OF SYMBOLS 10... Seedling stand, 12... Seedbed, 25... Rotating shaft, 27... Operating lever, 35... Lifting prevention body, 50... Parallel movement device, 55... Automatic shunting device, S... Lifting prevention action part, N...seedling receiving position, K...opening position.

Claims (1)

[Scope of utility model registration request] In a device for preventing floating of a seedbed of a rice transplanter, in which a floating preventing body 35 for preventing the floating of the seedling bed 12 from rising from the seedling table 10 is disposed on the seedling bed 12, the floating preventing body 35 is moved by a parallel moving device 50.
via the lifting prevention body position change operation lever 27
The parallel moving device 50
an arm 32 with a long hole disposed in a direction intersecting the operating lever 27; and a linear guide groove 41 disposed in parallel with the arm 32 and within the rotation locus of the arm 32. Further, an automatic shunting device 55 consisting of an upper guide groove 44 extending in a direction intersecting the guide groove 32 is provided at the tip of the guide groove 32, and a long groove of the arm 32 33 and a guide groove 41 of a guide plate, a seedling receiving fulcrum shaft 34 to which the floating preventing body 35 is fixed is inserted.