JPH0427290Y2 - - Google Patents

Description

[Detailed description of the invention] [Industrial application field] The present invention is a system for placing a plurality of pine-shaped seedlings, each of which is individually fed to a plurality of planting claws, on an inclined seedling stand. A storage section is provided, and a seedling holding device is provided for controlling the floating of the pine-shaped seedlings placed in the seedling storage section, and the seedling holding device or the seedling feeding operation tool is placed in a working position and a non-working position. The present invention relates to a seedling feeding section of a rice transplanter, which is provided with a seedling feeder which is attached to the device and which is changeable and operable, and which transfers the plurality of pine-shaped seedlings toward a seedling feeding port.

[Conventional technology]

Conventionally, in the seedling supply section of this type of rice transplanter,
A seedling holding tool and a seedling holding needle protruding from the lower surface of the seedling storage to hold the pine-shaped seedlings are provided, and the seedling holding pin is configured to be switchable between an active position and a non-working position, and the seedling holding pin is configured to be switchable between a working position and a non-working position. In conjunction with switching to the working position, the seedling fixing needle is switched to the non-working position, making it easy to replenish seedlings, etc.

[The problem that the idea aims to solve]

However, in this case, it is certainly possible to switch the seedling pinning needle to a non-working position to reduce the resistance when feeding seedlings, but in reality, the seedling feeder is in the seedling feeding state, so the seedling It was becoming a resistance during replenishment.

Therefore, I tried to solve this problem by using the following configuration. In other words, the star foil-shaped seedling feeder is fixed to the pine-shaped seedlings using a fixing mechanism such as a friction brake, and when filling the pine-shaped seedlings or pulling out surplus pine-shaped seedlings,
It may be possible to allow the seedling feeder to freely rotate, but this would require releasing the fixing mechanism in addition to releasing the seedling presser or seedling supply operating tool, making it difficult to perform filling or pulling operations. This has the disadvantage that the associated operations are troublesome.

In view of the above-mentioned conventional situation, the purpose of this invention is to prevent the accidental slipping of pine-shaped seedlings during planting work, while also making it possible to smoothly and easily fill or pull out pine-shaped seedlings. The point is to make it.

[Means to solve the problem]

The characteristic structure of the present invention is that a plurality of seedling feeders are attached so as to be able to rotate integrally with a rotating shaft installed across a plurality of seedling storage sections, and in the middle of the forced driving force transmission path to the rotating shaft, A switching mechanism is provided to intermittent power transmission to the seedling feeder, and the switching mechanism is switched in conjunction with the operation of switching the seedling holding tool to a non-operating position or the seedling feeding operating tool to an operating position. In order to operate the seedling feeder and put the seedling feeder into an idle state, the seedling presser or the seedling supply operating tool and the switching mechanism are linked by a linkage operation mechanism, and the effects are as follows. That's right.

[Function] When the seedling holding device is in the operating position and the switching mechanism is in the power transmission state, the seedling feeder is forcibly driven, so when the seedlings are not being fed,
The seedling feeder locks the pine-shaped seedlings to prevent the pine-shaped seedlings from sliding down, and in the state of feeding the seedlings, rotates integrally with the rotating shaft to transfer the pine-shaped seedlings toward the seedling supply port.

When the seedling presser is switched to the non-operating position (or the seedling feeding operation tool is switched to the operating position) from the state, the switching mechanism is put into the non-transmission state via the linked operating mechanism, and the plurality of seedling feeders are switched to the non-transmission state. It is integrated with the rotating shaft and is in an idle state. Therefore, without retracting the seedling feeder from the seedling surface of the pine-shaped seedlings,
It is possible to smoothly fill or pull out pine-shaped seedlings along the seedling stand.

Moreover, by linking the seedling presser (seedling feeding operation tool) with the switching mechanism, operations associated with filling or pulling out pine-shaped seedlings can be easily performed.

[Effect of idea]

Therefore, due to the above-mentioned effects, the time and labor required for filling and pulling out pine-shaped seedlings can be reduced without complicating the transmission structure such as retracting the seedling feeder from the seedling placement surface. As a result, it has been possible to obtain a seedling storage section of a rice transplanter that can improve the efficiency of operation by switching the seedling feeder for multiple rows to an idle state with a single operation of the seedling presser, etc. .

〔Example〕

Next, embodiments of the present invention will be described in detail based on illustrative drawings. As shown in Fig. 1, an engine 2 and a transmission case 3 are directly connected to the front end of a main frame 1 that also serves as a transmission case, and a seedling planting device 4 is connected to the rear end of the main frame 1 to operate the aircraft. One front float 5 is arranged below the front of this machine, and three rear floats 6 are arranged in parallel in the left and right direction below the seedling planting device 4.
A pair of propulsion wheels 8,
9 are arranged to constitute a walking type rice transplanter. The front float 5 is also configured to serve as a ground pressure detection sensor that swings up and down around the front end in accordance with fluctuations in ground pressure, and the front float 5 detects ups and downs of the machine body due to changes in the depth of the tiller. The plant is equipped with a well-known control mechanism that automatically controls the transmission case 7 to move up and down with a drive mechanism based on the detection result, thereby stably maintaining the level of the machine body relative to the planting surface.

The structure of the seedling planting device 4 is shown in FIGS. 2 and 3.
As shown in the figures and FIG. 4, a planting mission case 9 is installed in a row from the rear end of the main frame 1 toward the rear of the machine, and above the case 9, each of the four seedling storage sections is placed. A seedling platform 11 with a downward slope in the front, on which the four pine-shaped seedlings are placed while preventing them from lifting up by means of a seedling holding device 10 which can be fixed and released, is supported by a planting mechanism case 9. It is provided so that it can be horizontally reciprocated integrally with the sliding screw shaft 12 at a constant stroke by reciprocating the sliding screw shaft 12, and the seedlings on the seedling stand 11 are taken out one by one from the lower end thereof and planted in the field. Four planting claws 13 that circulate vertically are arranged coaxially in the lateral direction of the machine, and rotate at a constant angle so as to transfer pine-shaped seedlings downward every time the seedling platform 11 reaches the stroke end. A plurality of driven star foil-shaped seedling feeders 14 are arranged in parallel on a hexagonal shaft 15 that is horizontally suspended across a plurality of seedling storage sections on the back side of the seedling rack 11, and are used to feed the seedlings on the seedling rack 11. It is constructed so that four rows of pine-shaped seedlings are successively planted at a constant spacing as the aircraft advances.

To rotate and drive the star foil-shaped seedling feeder 14, an outer fitting member 17 whose rotation is regulated by the sliding resistance of a disc-shaped sliding friction brake 16 received on the seedling platform 11 side is loosely attached to the hexagonal shaft 15. An occlusal clutch 19 is fitted between the hexagonal shaft 15 and the external fitting member 17, and is interposed between the hexagonal shaft 15 and the external fitting member 17 to integrally connect and release the two by a shift operation, and is always biased toward the connection action side by a spring 18. A rotating shaft 22 attached to the sliding screw shaft 12 is connected to a transmission shaft 20 protruding from the planting mechanism case 9 by a cam mechanism 21 and rotated by a certain angle each time the seedling platform 11 reaches the stroke end. It is interlocked and connected to the outer fitting member 17 via a ratchet type one-way clutch 23 and a link mechanism 24 that act to prevent the seedling feeder 14 from reversing, so that the interlocking clutch 19 is connected at the time of planting. In the state
The sliding friction brake 16 prevents the seedling feeder 14 from idling and prevents the pine-shaped seedlings from slipping off. When the seedling platform 11 reaches the stalk end, the rotation of the rotating shaft 22 and the action of the one-way clutch 23 prevent the seedling feeder 14 from slipping. The seedling feeder 14 is configured to overcome the sliding resistance of the sliding friction brake 16 and to rotate the seedling feeder 14 at a constant angle against the return spring 25 of the cam mechanism 21.

When the engaging clutch 19 is operated, it can be slid freely on the cylindrical brackets 26 attached to the left and right sides of the seedling stand 11, and can be fixed in the seedling holding state of the seedling holding tool 10 using the elastic engagement pins 27. One end of both legs of the connecting rod 28 of the seedling presser 10 fitted inside and the clutch piece 19a slidably fitted on the hexagonal shaft 15 side of the engagement clutch 19 are interlocked by a wire 29. When the seedling holding device 10 is moved upwardly while being guided by the cylindrical bracket 26 and is switched to the seedling holding state releasing position, the clutch piece 19a is moved to the engaging clutch when the seedling holding device 10 is moved upward while being guided by the cylindrical bracket 26 and switched to the seedling holding state release position. 19 is slid against the spring 18 to the cut state side, so that the star foil-shaped seedling feeder 14 can freely rotate together with the hexagonal shaft 15, and the pine-shaped seedlings are filled in a state where it is aligned along the upper surface of the seedling platform 11. The structure is such that removal and movement for maintaining the intermediate position by the regulating tool 39 can be smoothly performed without being hindered by the seedling feeder 14.

The planting device 4 is provided with a pair of left and right line markers 30 for marking planting travel index lines for the next step on the mud surface, which can be pivoted between a reclining position and an upright storage position. As shown in FIG. 5, the switching operation structure includes a first spring 3 that biases the bar-shaped marker 30 to maintain its upright position.
1 is the pivot base of the marker 30 and its mounting member 32
At the same time, the marker 30 is placed in a laid down position against the first spring 31.
As the marker 30 swings toward the collapsed position, the arm 33 holds the ratchet member 34 by engagement with the arm 33 integrally connected from the pivot base.
When the marker 30 swings, the ratchet member 34 is pivoted to the mounting member 32 so that it swings away against the second spring 35 that urges the marker 30 toward the engagement position. It is configured so that it can maintain the posture and perform manual swing operation from the standing posture to the collapsed posture, and the swing operation lever 37 provided on the control handle 36 and the ratchet member 34 are interlocked and connected by a wire 38, and the operation By operating the lever 37, the ratchet member 34 is swung toward the disengagement side with the arm 33 against the second spring 35, and the biasing force of the first spring 31 automatically returns the marker 30 to the upright position. It is configured as follows, and marker 3 at the time of the aircraft's turn
The configuration is such that a 0 storage operation can be easily performed.

Next, another embodiment will be described.

To operate the occlusal clutch 19, for example:
When filling the slanted seedling rack 11 with pine-shaped seedlings, the preliminary seedling rack provided at the front of the upper end of the slanted seedling rack 11 is swung, and its rear end is connected to the front end of the slanted seedling rack 11. In the case of a rice transplanter of the type that slides the pine-shaped seedlings from the preliminary seedling platform to the inclined seedling platform 11 by moving the pine-shaped seedlings to the position shown in FIG. Various configuration changes can be made to the operating tools that are interlocked with the interlocking clutch 19 during seedling feeding, such as configuring them in conjunction with the release operation of the clutch 19, and these operating tools are collectively referred to as the seedling feeding operation. It is called a tool.

The shape of the seedling feeder 14 that prevents the pine-shaped seedlings from slipping on the seedling platform 11 and its brake mechanism including the friction brake 16 can be modified in various configurations.

Instead of providing the engaging clutch 19 as a mechanism for intermittent power to the seedling feeder 14, an electromagnetic clutch or the like may be used, and the switching mechanism can be changed in various configurations. The operating tool and the occlusal clutch 19 may be linked by a link mechanism or an electric mechanism instead of by the wire 29, and the linkage structure can be changed in various configurations. These are called linked operation mechanisms.

The seedling supply section of the rice transplanter according to the present invention can be applied to various types of rice transplanters, including walking and riding types.

[Brief explanation of the drawing]

The drawings illustrate an embodiment of the seedling feeding section of the rice transplanter according to the present invention, where FIG. 1 is an overall side view, FIG. 2 is a partially cutaway side view of the seedling planting section, and FIG. 3 is a seedling feeding structure. FIG. 4 is an enlarged cross-sectional view of the main part, and FIG. 5 is a rear view showing the operating structure of the marker. 10... Seedling presser, 11... Seedling stand, 13...
... Planting claw, 14 ... Seedling feeder, 15 ... Rotating shaft,
19...Switching mechanism.

Claims (1)

[Scope of utility model registration request] The inclined seedling platform 11 is provided with a plurality of seedling storage sections in which a plurality of pine-shaped seedlings to be separately supplied to the plurality of planting nails 13 are placed, and the pine seedlings placed in the seedling storage sections are A seedling presser 10 is provided to restrict the floating of seedlings, and this seedling presser 10, or
Seedling supply of a rice transplanter, which is equipped with a seedling feeding operation tool that can be freely changed between an active position and a non-active position, and a seedling feeder 14 that transports the plurality of pine-shaped seedlings toward a seedling supply port. A plurality of seedling feeders 14 are attached so as to be integrally rotatable with respect to a rotating shaft 15 installed across a plurality of seedling storage sections, and a part of the forced driving force transmission path to this rotating shaft 15 is attached. is provided with a switching mechanism 19 for intermittent power transmission to the seedling feeder 14, and the seedling presser 10
The switching mechanism 19 is switched in conjunction with the operation of switching the seedling feeder to the inactive position or the seedling supply operating tool to the active position, and the seedling holding tool 10 or a seedling supply section of a rice transplanter in which the seedling supply operation tool and the switching mechanism 19 are linked by a linkage operation mechanism.