JPS6225080Y2 - - Google Patents

Description

[Detailed description of the invention] This invention is a nozzle that discharges fertilizer near the field while scraping out the fertilizer in the fertilizer storage tank with a rotating scraper that has fertilizer storage recesses formed at appropriate intervals in the circumferential direction. Regarding the fertilization device of a rice transplanter configured to guide and supply fertilizers to rice, the purpose thereof is to ensure that the fertilization operation can be stopped.

The present invention will be described in detail below based on embodiments.

Figure 1 shows the side view of the walking rice transplanter, including a front engine 1, a rear seedling planting device 2, a control handle 3,
It is equipped with a pair of left and right propulsion wheels 4, 4 that touch the ground on a hard surface, three floats 5 that slide on the field, etc. The seedling planting device 2 has four planting claws arranged side by side at appropriate intervals in the lateral direction along the lower end row of the group of seedlings placed on the inclined seedling platform 6 that reciprocates laterally at a constant stroke. The system is configured so that seedlings are taken out one by one at step 7 and planted in the field.

As the process progresses, the system is configured to automatically and continuously perform the work of planting four seedlings one after another.

Next, the fertilization device installed in the walk-behind rice transplanter having the above configuration will be explained based on FIGS. 1 to 7.

That is, a pair of left and right fertilizer storage tanks 8, 8 for storing powdered fertilizer are supported by the aircraft body, and each of these tanks 8, 8 has the following:
A pair of front and rear outlets 8a, 8b and 8a, 8b are provided.

4 Discharging fertilizer near the field scene corresponding to the seedling planting location before the seedling planting device 2 performs seedling planting;
Nozzles 9a, 9a, 9b, 9b are provided. As shown in FIG. 7, these nozzles 9a... are configured to double as groove formers that form grooves for introducing fertilizer into mud, and at their rear ends are ground leveling plates 10... for backfilling the grooves. is installed. Also, of these four nozzles 9a..., those at both lateral ends 9a, 9a are supported by a float 5 whose rear end is pivoted about the horizontal axes X, X to the fuselage so as to be able to swing up and down. , 5, and the laterally intermediate ones 9b, 9b are supported against the machine frame, and the respective nozzles 9a... are connected to the connecting holes 11...
It is installed so that its vertical and longitudinal positions can be adjusted depending on the selection.

The left and right outlets 8a, 8a located at the front of the outlets 8a of the tanks 8, 8, and the nozzles 9a, 9a at both lateral ends are connected to the flexible hose 12.
a, 12a, and are connected to the outlet ports 8b, 8b located at the rear, and the horizontally intermediate nozzle 9b,
9b are connected by flexible hoses 12b, 12b.

A rotary scraping tool 13 having fertilizer storage recesses 13a, 13b at appropriate intervals in the circumferential direction is located above each outlet 8a of the tanks 8, 8.
A, 13A, 13B, and 13B are provided.
The front one 13 of these scraping tools 13A...
A, 13A are interlocked and connected by a rotating horizontal shaft 14a,
The rear ones 13B, 13B are interlocked and connected by the rotating horizontal shaft 14b, and both horizontal shafts 14a, 14
b are interlockingly connected by a chain 15, and the rear horizontal shaft 14b is interlockingly connected to a drive rotating shaft 17 supported on the planting mission case 16 by a chain 29. The drive rotation shaft 17 is driven and rotated by an output from a lower transmission part of a gear transmission mechanism 18 that changes the drive speed of the seedling stand 6 relative to the drive speed of the planting claws 7. That is, as shown in FIG. 6, the transmission mechanism 18 is driven and rotated by the engine output, and slides a transmission shift gear 18a spline-connected to a rotating shaft 19 that is interlocked with each of the planting claws 7. By doing this, the rotational speed of the screw shaft 20 for driving the seedling stand is reduced to 2.
The drive rotating shaft 17 is gear-coupled with the screw shaft 20. still,
In the figure, reference numeral 21 denotes a frame member that engages with the screw shaft 20 and moves laterally back and forth, and 22 denotes a horizontal slide rod that connects the frame member 21 and the seedling stand 6.

The rotating scraping tools 13A... A clutch mechanism 23 that separately connects and disconnects the transmission to each of the rotating scraping tools 13A... The scraping tools 13A are connected to the tank 8 and the nozzle 9.
A mechanism 24 is provided for fixing at a predetermined rotational position to cut off communication with a. Each of the clutch mechanisms 23 and each of the fixing mechanisms 24 are constructed in the same way, and only the one on the front left side of the four rotary scraping tools 13A will be described below.

The rotary support shaft 25 of the rotary scraping tool 13A and the rotary horizontal shaft 14a are juxtaposed with their ends close to each other, and are not relatively rotatable with respect to each of the shafts 25, 14a. A cylindrical sliding body 23a that can be engaged so as to be movable in the core direction is provided. A clutch that can be operated by sliding the sliding body 23a in the axial direction and switching between a clutch engaged state in which the sliding body 23a is engaged with both shafts 25 and 14a and a clutch disengaged state in which it is engaged only with the rotating support shaft 25 is provided. A mechanism 23 is configured.

Further, a part of the sliding body 23a in the circumferential direction is cut out to form a plane T, and a locking piece 24a is provided which comes into contact with this plane T and prevents rotation of the sliding body 23a. ing. Then, while the sliding body 23a is rotated to a predetermined rotational position, it is slid in the axial direction, and the plane T is locked with the locking piece 24a.
The rotating position of the rotating scraper 13A in the fixed state is such that the pair of brushes 26a and 26b are in the same position as the scraper 13a. A fixing mechanism 24 is provided, which is set at a predetermined rotational position so as to come into contact with a portion of the circumference where the recesses 13a are not formed.

In addition, if the sliding body 23a is located in a position where it does not engage with the horizontal shaft 14a and does not come into contact with the lock piece 24a, the scraping tool 13A can freely rotate, making it convenient to use when cleaning, etc. It is possible. Note that 26 in the figure is a beta pin for fixing the sliding body 23a at a predetermined axial position.

The fertilizer application device is configured as described above, and the fertilizer scraped out by the rotary scraping tools 13A is guided and supplied to the nozzles 9a through the hoses 12a and supplied near the field area. become.

Further, by using the clutch mechanism 23... and the fixing mechanism 24... to stop the rotational drive of the rotating scraper 13A... and fixing it at a predetermined rotational position, the fertilizer in the tanks 8, 8 can be removed. Fertilization work can be stopped without any unexpected runoff.

In addition, in implementing the present proposal, as described in the example,
If a clutch mechanism 23... and a fixing mechanism 24... are provided separately for each of the plurality of rotary scraping tools 13A..., for example, when the number of rows to be planted in the seedling planting device 2 is changed, a desired one can be obtained. This is convenient because it allows you to arbitrarily switch to a non-use state.

FIGS. 8A, 8B, and 9C show another embodiment of the present invention, in which the sliding body 23a' is made elastic along the horizontal axis 14a by a spring 27. A locking piece 24a' is provided to lock the protruding piece 28 protruding from the sliding body 23a' so that it cannot rotate and cannot move in the axial direction against the biasing force. This constitutes a mechanism 24'.

In summary, the fertilization device for a rice transplanter according to the present invention has the above-described structure, and includes a clutch mechanism that cuts off the transmission of power to the rotating scraper, and a clutch mechanism that disconnects the scraper from communicating with the tank and the nozzle. It is characterized by being provided with a mechanism for fixing at a predetermined rotational position.

That is, when stopping the fertilization work, not only is the clutch mechanism used to stop driving the rotary raking tool, but also the fixing mechanism is used to rotate the rotary raking tool to a predetermined degree to cut off communication between the tank and the nozzle. Since it can be fixed in position, it can be stopped reliably without the fertilizer in the tank spilling out unexpectedly. Therefore, the machine can be stopped during seedling planting or at the time of completion. It is possible to use it more conveniently since there will be no variation in the growth of the seedlings between the seedlings in that area and the surrounding seedlings due to excess fertilizer due to fertilizer runoff. We were able to obtain a fertilizing device for a rice transplanter.

Furthermore, as a means to prevent the fertilizer from flowing out due to the rotary scraper being stopped in a state in which the tank and the nozzle are communicated when the clutch mechanism is disconnected, a stop provided in the middle of the piping to the nozzle is closed. However, in such a case, when you run out of seedlings in the center of the field and want to replenish the seedlings and restart work, you must open the pot first and then drive the fertilizing device. If the tank is opened, there is a risk that the fertilizer will flow out when the tank is opened. A structure in which it is fixed in a moving position has the advantage of avoiding the above-mentioned disadvantages.

[Brief explanation of the drawing]

The drawings show an embodiment of the fertilization device for a rice transplanter according to the present invention, and FIG. 1 is a side view of the rice transplanter, FIG. 2 is a schematic plan view of the fertilization device, and FIG. 3 is a part of the raking tool attachment part. A notched side view, Fig. 4 A, B, and C are partially cutaway front views of the same parts, and Fig. 5 is a - in Fig. 4 C.
Fig. 6 is an expanded schematic diagram showing the transmission structure inside the planting transmission case, Fig. 7 is a perspective view of the nozzle, Fig. 8 A and B are sectional views of another embodiment, Fig. 9 is a - line diagram in FIG. 8B. 8... Fertilizer storage tank, 9a... Nozzle, 13
A... Rotating scraper, 13a... Recess for storing fertilizer, 23... Clutch mechanism, 24... Fixing mechanism.

Claims (1)

[Scope of utility model registration request] The fertilizer in the fertilizer storage tank 8 is scraped out by a rotating scraper 13A having fertilizer storage recesses 13a formed at appropriate intervals in the circumferential direction, and is guided and supplied to a nozzle 9a that discharges the fertilizer near the field. This is a fertilization device for a rice transplanter, in which the rotary raking tool 1
A clutch mechanism 23 for intermittent transmission of power to the tank 8 and the nozzle 9
A fertilizing device for a rice transplanter, characterized in that it is provided with a mechanism 24 for fixing at a predetermined rotational position to cut off communication with the rice transplanter.