JPH056966B2 - - Google Patents

Description

[Detailed Description of the Invention] [Industrial Application Field] The present invention includes a feeding mechanism at the lower part of a hopper for storing powdery fertilizer, and a furrowing device provided near the planting mechanism and the feeding mechanism. The present invention relates to a fertilization device for a rice transplanter, which is connected by a hose and includes a clogging detection sensor in a fertilizer supply path from a feeding mechanism to a furrower, and a cleaning tool insertion opening in a casing of the feeding mechanism.

[Conventional technology]

Conventionally, as a fertilizer application device, for example,
As shown in No. 116807, the fertilizer stored in the hopper is dropped in fixed amounts by a feeding mechanism that operates in conjunction with the operation of the seedling planting device, and the fertilizer thus dropped is passed through a hose and a furrower. Some fertilizer applicators are configured to send the fertilizer to the field, and in some fertilizer applicators configured in this way, fertilizer may adhere to the inner surface of the hose or furrower due to the action of moisture from the field. Some devices have been devised to clean the fertilizer supply path below the clogging detection sensor and feeding mechanism that detect this (references not listed).

[Problem that the invention seeks to solve]

Furthermore, since the supply route does not like moisture to enter, it is desirable to have a structure that prevents rainwater from entering when cleaning the supply route during work in rainy weather, and an electric device to which the signal from the sensor is input is provided. Securing space is also desired.

An object of the present invention is to provide a structure that can prevent rainwater from entering as much as possible during the cleaning operation of the supply route and secure a space for installing the electrical equipment through reasonable modification.

[Means for solving problems]

The features of the present invention include the above-mentioned structure of the fertilization device.
A cover covering the cleaning tool insertion port is provided on the outside of the casing so as to be able to swing upward and open using a location above the cleaning tool insertion port as a fulcrum, and an electric device for clogging detection is assembled on the inner surface of the cover. There is a certain point, and its action and effect are as follows.

[Effect]

If the above characteristics are configured as shown in FIG. 1, for example, when cleaning the supply path, that is, the lower part of the feeding mechanism 12, the hose 13, and the groove cutter 14, the cover 30 can be opened by swinging upward. Since the cover 30 is set in a cantilevered position extending backward from the fulcrum P, the cover 30 in this extended position can prevent rainwater from falling below the cover 30. .

Furthermore, even when the cover 30 is open as described above, operations such as adjusting the sensitivity of the sensor S can be performed without rainwater entering the control board 29, which is an example of an electric device for clogging detection.

〔Effect of the invention〕

Therefore, by a relatively simple modification of installing a cover with a fulcrum formed at the top, rainwater can be prevented from directly entering the cleaning tool insertion port even during cleaning operations in rainy weather.
Moreover, the space for installing the electric device for clogging detection is secured at a location where adjustment operations can be easily performed.

〔Example〕

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

As shown in FIG. 9, a rice transplanter is constructed by connecting a seedling planting device A to the rear end of a riding-type traveling body 1 via a link mechanism 3 that is raised and lowered by the operation of a hydraulic cylinder 2.

The seedling planting device A includes a transmission case 5 to which power is transmitted from the traveling body 1, a seedling platform 6 on which pine-shaped seedlings W are placed, and a seedling platform 6 for planting seedlings one by one onto a field scene S. The seedling planting device A is configured for planting in 5 rows with three planting arms 7, three soil leveling floats 8, 8, 8, etc. arranged in parallel in the left and right direction of the seedling planting device A, and the seedling planting device A also has a seedling planting operation. Fertilizer B, which sometimes sends fertilizer to the field, is installed.

As shown in FIGS. 9 and 1, the fertilizer application device B
The planting arm 7 is configured for five rows so as to send fertilizer to each side of the field where seedlings are to be planted, and the structure thereof will be described in detail below.

As shown in FIG. 1, there is a hopper 10 for storing powdery fertilizer 9, and a feeding mechanism 1 installed in a casing 11 that is connected to the lower part of the hopper 10.
2. One row unit of the fertilizer application device B is composed of a hose 13 that guides the fertilizer sent out from the feeding mechanism 12, and a groove cutter 14 connected to the lower end of the hose 13.

Further, as shown in FIG. 2, the hopper 10 has
A two-row hopper block 10A and a three-row hopper block 10B are assembled by configuring mutually adjacent hoppers 10 in a communicating state so that two or three rows of fertilizer can be supplied by opening one lid. The feeding mechanism 1 is configured for a total of five threads.
2 consists of a cylindrical body 12b with recesses 12a, 12a formed on the upper surface, and the swinging force of the link mechanism 15 that sets the operating locus of the planting arm 7 is transmitted via the rod 16, so that the planting arm 7 can be moved to the left-right axis. It is operated so that the fertilizer that has entered the recesses 12a, 12a is distributed and dropped in the front and rear directions, respectively, by swinging back and forth around it.

As shown in FIG. 1, brushes 17, 17 are attached to the casing 11 in which the feeding mechanism 12 is housed, and brushes 17, 17 that come into sliding contact with the feeding cylinder 12b are attached to the casing 11 housing the feeding mechanism 12.
The amount of fertilizer sent out from 2b is regulated to a certain amount. Further, a cleaning tool insertion port 11a is formed on the rear surface of the casing 11 for cleaning the fertilizer supply path below from the feeding mechanism 12, and this cleaning tool insertion port 11a is closed with a rubber cap 18. It's summery.

As shown in FIGS. 4 to 6, the groove creator 14
is made of a metal material, and its cross-sectional shape is approximately U-shaped with a rearward opening. The one side is formed larger than the other side to prevent mud splash from entering during the planting operation.

Also, a bracket 19 is attached to the front wall 14b of the groove creator 14.
is attached, and the rear part of the groove cutting plate 20 provided on the earth leveling float 8 is connected to the bracket 19 with bolts 21, so that the groove cutting device 14 is provided to the earth leveling float 8.

Furthermore, a clogging detection sensor S for detecting clogging or narrowing of the fertilizer supply path from the feeding mechanism 12 is provided near the connecting portion with the hose 13 inside the trencher 14.

That is, the sensor S is connected to the front wall 14 of the groove creator 14.
an insulator 23 attached to b via screws 22, 22, electrode pieces 24, 24 exposed to protrusions 23a, 23a formed in parallel in the left-right direction on this insulator 23, and a groove cutter. 14 left and right side walls 14
Since the electrode pieces 24, 24 and the left and right side walls 14a, 14a are arranged close to each other, fertilizer powder is not attached between the electrode pieces 24 and the side walls 14a. The structure is such that clogging or narrowing of the supply path can be detected from a decrease in electrical resistance when a fertilizer wall 9a is formed.

Incidentally, as shown in FIG. 6, the electrode pieces 24, 24
These electrode pieces 24, 24 are connected to each other by a cord 25, and are set to an equipotential state.
The cord 26 connected to the lug terminal 2 is pulled out to the outside of the insulator 23, and as shown in FIG.
7 is tightened together with the screw 22 to the groove making device 14, and a cord 28 connected to the lug terminal 27 is drawn together with the cord 26 into a control board 29 which will be described later.

Incidentally, the electrode pieces 24, 24 are provided in the vicinity of the lower opening 13a of the hose 13, where clogging occurs frequently, and are overlapped with the path through which the fertilizer falls from the hose 13.

As shown in FIG. 2, the 2-row part and the 3-row part of the fertilization device, to which fertilizer is supplied from the 2-row and 3-row hopper blocks 10A and 10B, respectively, are configured to be unitizable. The two-strip unit portion B ₂ and the three-strip unit portion B ₃ each have a cover 3 located behind the casing 11 .
0,30 are provided.

These covers 30, 30 are each pivotably supported by a support arm 31 extending rearward from the casing 11, so that they can be swung upwardly and opened. On the rear surface, a clogging indicator lamp 32 is attached at a position above the five hoses 13 when viewed from the rear, and a control board 29 is attached to the inner surface of the cover 30 on the side of the three-line unit _B3 . It is being

That is, the covers 30, 30 are each made of a molded resin product, and as shown in FIG. 3
By being supported via a fulcrum P consisting of 6 and 36, it is possible to arbitrarily set and maintain an upward swinging open position.

Further, the control board 29 is equipped with a group of electric elements constituting the control section C of the electric circuit shown in FIGS.
28..., code 37 to the five lamps 32...
..., a cord 39 from a battery 38 provided in the traveling aircraft 1 and a signal cord 43 for operating a buzzer 41 and a warning lamp 42 provided in the meter panel 40 of the driving unit D of the traveling aircraft 1 are connected, and further , the control board 29 is provided with a volume 44 for setting the sensitivity of the sensors S.

The control unit C includes a three-terminal type constant voltage power supply element 4.
5. The five comparators 46 to which signals from the sensors S are input, the drive transistors 47 for amplifying the output signals from the comparators 46, and the volume 44 for setting reference voltages to each of the comparators 46. , an OR gate 48 to which signals from five comparators 46 are input, and the electric resistance value of the sensor S input to each comparator 46 decreases, and the comparator 4
When the output terminal 6 is turned on, the lamp 32 is turned on, and when any one of the lamps 32 is turned on, the buzzer 41 and the alarm lamp 42 are activated via transistors 49, 49. There is.

Further, the buzzer 41 is configured to operate intermittently.

Further, the control board 29 is fixed to the inner surface of the cover 30 with screws 50 as shown in FIGS.
1 is poured and hardened.

When adjusting the sensitivity of the sensor S, the cover 30 can be swung open to any position, the knob 44a for operating the volume 44 can be rotated, and the supply path from the feeding mechanism 12 can be cleaned. In this case, the rubber cap 18 is opened with the cover 30 swung open to an arbitrary position in the same manner as described above.
It is configured such that the cleaning tool 52 can be inserted into the cleaning tool insertion opening 11a by removing the cleaning tool 52.

Note that the cleaning tool 52 has a brush 52a at one end.
A scraper 52b made of rubber is removably attached to the other end.

[Another example]

In addition to the embodiments described above, the present invention may be configured such that the cover 30 is locked at the upper swinging end, or the electric device for clogging detection may be attached simply by screwing.

[Brief explanation of the drawing]

The drawings show an embodiment of the fertilization device for a rice transplanter according to the present invention, in which Fig. 1 is a vertical side view showing the feeding mechanism, etc., Fig. 2 is a rear view of the hopper, Fig. 3 is a sectional view showing the fulcrum, Figures 4 and 5 are a longitudinal sectional side view of the groove creator and a rear view of the sensor, Figure 6 is a sectional view taken along the - line in Figure 4, and Figures 7 A and 7 are exploded perspective views showing the mounting structure of the control board. 8A and 8B are diagrams showing the electric circuit of the control board, etc., and FIG. 9 is an overall side view of the rice transplanter. 7... Planting mechanism, 10... Hopper, 11... Casing, 11a... Cleaning tool insertion port, 12... Feeding mechanism, 13... Hose, 30... Cover, S... Sensor,
P...Fulcrum.

Claims (1)

[Claims] 1. A feeding mechanism 12 is provided at the bottom of the hopper 10 that stores powdery fertilizer, and a furrowing device 1 is provided near the feeding mechanism 12 and the planting mechanism 7.
4 is connected with a hose 13, a clogging detection sensor S is provided in the fertilizer supply path from the feeding mechanism 12 to the furrower 14, and a cleaning tool insertion port 11a is provided in the casing 11 of the feeding mechanism 12. A mechanical fertilization device, wherein the casing 1
A cover 30 covering the cleaning tool insertion port 11a is provided on the outside of the cleaning tool insertion port 11a so as to be able to swing upward and open with the upper part of the cleaning tool insertion port 11a as a fulcrum P. A fertilizer application device for rice transplanters that is assembled with