JP4059796B2 - Paddy field machine fertilizer - Google Patents

Description

[0001]
BACKGROUND OF THE INVENTION
The present invention relates to a fertilizer application apparatus for a paddy field work machine such as a rice transplanter in which a feeder for feeding out fertilizer in the hopper is connected to a lower part of a hopper for storing fertilizer.
[0002]
[Prior art]
As a conventional fertilizer application for paddy field machines, a light sensor is provided as a fertilizer sensor on the rear wall of the lower part of the transparent or translucent hopper that can visually grasp the fertilizer inside, and the light sensor does not block the light by the fertilizer Alternatively, it is known to detect that the amount of fertilizer in the hopper has decreased due to a decrease (see, for example, Patent Document 1).
[0003]
[Patent Document 1]
JP 2002-238317 A [0004]
[Problems to be solved by the invention]
When using the conventional technology for providing a fertilizer sensor, the entire hopper is transparent or semi-transparent, and the outside of the hopper is outside light from the vicinity of the optical sensor installation portion, that is, from a location very close to the optical sensor. Since sunlight enters the hopper, the incident external light is reflected by the fertilizer and enters the light receiving surface of the optical sensor. As a result, the fertilizer remains sufficiently in the hopper, but the fertilizer remains little. When it became, there was a problem that the optical sensor would falsely detect.
[0005]
An object of the present invention is to eliminate the above-described conventional problems.
[0006]
[Means for Solving the Problems]
The features / actions / effects of the fertilizer application device for paddy field machine according to the present invention according to claim 1 are as follows.
[0007]
[Characteristic]
A paddy field work device is connected to the rear part of the self-propelled aircraft so that it can be raised and lowered, and a transparent or translucent fertilizer storage hopper is mounted on the rear part of the self-propelled aircraft between the driver's seat and the paddy field work device. A feeder that feeds out the fertilizer in the hopper is connected, and the rear wall of the lower part of the hopper has a light receiving surface facing forward, and the fertilizer with respect to the light receiving surface is discharged as the fertilizer is discharged from the hopper. Equipped with an optical fertilizer sensor that detects that the fertilizer in the hopper has run out when shading or dimming is no longer performed, and external light from the surrounding area of the fertilizer sensor to the hopper of the hopper It provided an optical intrusion amount regulating means for preventing or reducing the penetration of, the rear wall of the hopper in the upper than the fertilizer sensors with composing light quantity limiting sheet permeable to the light entering amount regulating means Installed at the rear of the fertilizer sensors lies in that than fertilizers sensor from the position of the top of該肥charge sensor is provided over a position below.
[0008]
[Action]
Since light intrusion amount regulation means is provided to prevent or reduce external light such as sunlight from entering the hopper from the periphery of the fertilizer sensor installation area, the external light is reflected by the fertilizer. Thus, it is possible to prevent the conventional phenomenon of entering the light receiving surface of the fertilizer sensor, and to prevent or reduce the incidence of external light on the light receiving surface when the fertilizer is sufficiently in the hopper.
In addition, it does not restrict the outside light from entering the hopper from the whole area around the hopper, but prevents the outside light from entering the hopper from the surrounding area of the fertilizer sensor installation part. The remaining state of fertilizer inside can be grasped visually.
[0009]
Since the light transmission control sheet is stretched outside the fertilizer sensor installation part to block or reduce the light incident from the peripheral part of the fertilizer sensor installation part, no improvement to the fertilizer application is necessary.
[0010]
Although the fertilizer sensor is attached to the rear wall of the hopper and the light receiving surface is directed forward to perform the desired detection, a hopper is placed at the rear of the self-propelled aircraft, that is, the rear of the driver's seat. Thus, when the hopper can be visually observed by looking back, the hopper other than the rear wall can be maintained transparent or translucent, and the operator's visual inspection in the hopper is not hindered.
[0011]
[effect]
Therefore, while being able to visually grasp the amount of fertilizer in the hopper from the outside, it prevents false detection of the fertilizer sensor due to external light, and it can be detected by the fertilizer sensor only when the fertilizer becomes less than the set amount, The detection accuracy can be greatly improved.
[0012]
Moreover, it came to be applicable to the existing fertilizer at low cost.
[0013]
Furthermore, while preventing erroneous detection of the fertilizer sensor by shading or dimming, the function of visually grasping the fertilizer in the desired hopper can be maintained satisfactorily.
[0014]
The features / actions / effects of the fertilizer application device for paddy field machine according to the second aspect of the present invention are as follows.
[0015]
[Characteristic]
In the fertilizer application of the paddy field machine according to the first aspect of the present invention, the light intrusion amount regulating means is a means for shielding light with a light-shielding black color.
[0016]
[Action]
Since light is shielded by a light-shielding black sheet or coating paint, it is possible to reliably prevent or reduce the incidence of light from the periphery of the fertilizer sensor installation area into the hopper.
[0017]
[effect]
Therefore, it has become possible to reliably and accurately prevent erroneous detection of the fertilizer sensor.
[0018]
DETAILED DESCRIPTION OF THE INVENTION
As shown in FIGS. 1 and 2, a rice transplanter that is an example of a paddy field work machine is provided with a six-row planting type seedling planting device 2 that is an example of a paddy field work device via a link mechanism 3 at the rear of the self-propelled machine 1. And a lift cylinder 4 using a hydraulic cylinder that raises the seedling planting device 2 as the pressure oil is supplied and lowers the seedling planting device 2 by weight as the oil is drained. A fertilizer application device for applying fertilizer to each of the right and left sides of the planting strip by the planting device 2 is provided.
[0019]
The self-propelled airframe 1 has an engine 8 and a steering handle for steering the driving front wheel 5 on a body frame 7 having a pair of left and right driving front wheels 5 and a pair of left and right driving rear wheels 6. 9, the driver's seat 10 and the like are assembled.
[0020]
The fertilizer is mounted on the self-propelled machine 1 with a fertilizer feeding device 11 positioned behind the driver's seat 10 and an electric blower 12 that generates a fertilizer pumping airflow. In addition, a groove forming device 14 is provided for forming a fertilizer groove in a field scene along with planting and feeding fertilizer fed from the fertilizer feeding device 11 and supplied through a supply pipe 13 by an air flow into the groove. Equipped with equipment.
[0021]
As shown in FIGS. 3 and 4, the fertilizer feeding device 11 is provided with a semi-transparent colored fertilizer storage hopper 15, and a feeder 16 for feeding the fertilizer in the hopper 15 is provided below the hopper 15. It has the basic structure.
[0022]
The hopper 15 includes a main body 15A in which four lower funnel discharge parts 15a are juxtaposed at left and right sides and spaced apart from each other, and a fertilizer inlet 15b that opens upward is formed in the upper part, and the fertilizer of the main body 15A. The lid 15B is mounted so as to open and close the insertion port 15b.
[0023]
A sealing material 15c that seals between the lid 15B and the main body 15A in the closed position is mounted. When the sealing material 15c is held between the main body 15A and the lid body 15B, the sealing material 15c is greatly elastically deformed in a state in which the inner space is narrowed, thereby improving the adhesion to the main body 15A and the lid body 15B and improving the sealing performance. It has a U-shaped cross section. The sealing material 15c may be mounted on the main body 15A.
[0024]
Further, the hopper 15 is provided with a lid sensor S for detecting the opening of the lid body 15B, and the electric motor of the blower 12 is automatically stopped by detecting the opening of the lid body 15B by the lid sensor S, that is, the air flow Is automatically stopped from being sent to the fertilizer feeding device 11.
[0025]
As shown in detail in FIGS. 5 to 7, the feeder 16 is attached to the lower part of each of the flow-down discharge portions 15 a, and each feeder 16 has the same structure, and two grooves are formed by one. 14 is paid out. More specifically, a feeding case 17 that communicates with the flow-down discharge portion 15a is provided with a feed roll 18 that feeds the fertilizer in the hopper 15 by rotating about the left and right axis x, and this feed from the flow-down discharge portion 15a. A first shutter 19 that opens and closes half of each of the pair of left and right fertilizer supply paths to the roll 18 and a second shutter 20 that opens and closes the other half of the fertilizer supply path are provided, and the supply case 17 includes the supply pipe. 13 is inserted and connected, and a pair of left and right cylindrical discharge ports 21 for discharging each of the two groups of fertilizers fed by the feed roll 18 are connected to the supply pipe 13 and sent from the blower 12 through the duct 22. A pair of left and right cylindrical air flow receiving ports 23 for receiving the incoming air flow are formed.
Of the feeders 16, the feeders 16 on the left side are respectively connected to the supply pipes 13 connected to the left side center and the left side center among the six groovers 14 juxtaposed at right and left sides. By connecting to the outlet 21, the fertilizer is fed out to the two grooving devices 14. The feeding device 16 in the left side connects the supply pipe 13 connected to the grooving device 14 in the left side to one outlet 21. The fertilizer is fed out to the one groover 14 by being connected, and the right outside feeder 16 is connected to each of the supply pipes 13 connected to the right outside and right center groover 14. The fertilizer with respect to these two groove forming machines 14 is paid out by connecting to 21, and the supply machine 16 in the right side connects the supply pipe 13 connected to the groove forming machine 14 in the right side to one discharge port 2. It is intended to feed fertilizer for that one Sakumizo 14 by connecting to. The other outlet 21 of the left and right inner feeder 16 is not used and is closed with a plug 24. Of course, the first shutter 19 and the second shutter 20 corresponding to the discharge port 21 blocked by the plug 24 are closed so as to prevent the fertilizer from flowing down to the feeding roll 18 and not reach the discharge port 21. Further, half of the fertilizer is supplied by opening only one of the first shutter 19 and the second shutter 20, and the entire amount of fertilizer is supplied by opening both the first shutter 19 and the second shutter 20. It has become.
[0026]
As shown in FIGS. 8 (A) and 8 (B) and FIG. 9, the feeding case 17 has a horizontal plane Y including a rotation axis of the feeding roll 18, that is, a left-right axis (an example of a horizontal axis) x. Is divided into an upper case portion 17A and a lower case portion 17B, and is held between the two divided surfaces, so that the inner space is narrowed and elastically deformed so that the inner space portion is narrowed. A sealing member 17a having a U-shaped cross section that seals between the two by being in close contact with the lower case portion 17B is provided as an attachment portion. The lower case portion 17B is pivotally connected to the upper case portion 17A so as to be swingable openable and closable around the second left-right axis x2, and the lower case portion 17B is in a closed position. A pair of left and right elastic arms 17b that are held in their closed postures by elastic engagement with the upper case portion 17A are integrally formed.
[0027]
The blower 12 is of a centrifugal type, and is arranged at the center of the left and right sides so as to branch and supply the air current to the left side feeder 16 group and the right side feeder 16 group through the duct 22.
[0028]
As shown in detail in FIG. 11, the lower portion of the hopper 15 and the feeder 16 are sealed with a sealing material 25 with a lip 25a.
[0029]
In the fertilizer feeding device 11, as shown in FIGS. 3 to 5, the lower portion of the hopper 15, that is, the rear wall of each of the flow-down discharge portions 15 a, with the discharge of the fertilizer from the hopper 15. An optical fertilizer sensor 26 that detects and detects that no fertilizer in the hopper 15 is used when the light receiving surface 26a is no longer shielded by the fertilizer is attached so that the light receiving surface 26a faces forward and obliquely upward. Among them, there is provided a light intrusion amount restricting means for reducing the intrusion of external light into the hopper 15 from the periphery of the installation portion of the fertilizer sensor 26.
[0030]
The fertilizer sensor 26 is a light detection sensor.
[0031]
The light intrusion amount restricting means is configured by stretching a black light-shielding light transmission amount restricting sheet 27 behind the hopper 15 including the peripheral portion of the fertilizer sensor 26.
[0032]
Therefore, according to the above configuration, the hopper 15 is made translucent so that the inside of the hopper 15 can be visually observed from the outside, and the outside light (sunlight) from the peripheral portion of the installation portion of the fertilizer sensor 26 enters the hopper 15. Thus, it is possible to prevent erroneous detection that the light incident from the periphery of the installation portion is reflected by the fertilizer and that the fertilizer in the hopper 15 is reduced.
[0033]
[Another embodiment]
In the above-described embodiment, the black light-shielding sheet is provided as the light transmission restriction sheet 27. However, the light transmission restriction sheet 27 may be anything as long as it is translucent and reduces the light transmission.
[0034]
In the above embodiment, the light-receiving surface 26a is detected not to be shielded by fertilizer, but the fertilizer is reduced when the light-receiving surface 26a is no longer dimmed by fertilizer. You may make it detect as a thing.
[0035]
In the above embodiment, the blower 12 is automatically stopped by the detection of the lid sensor S. However, the duct 22 is automatically closed by the detection of the lid sensor S so that no airflow is sent to the fertilizer feeding device 11. You may carry out.
[0036]
In the above embodiment, as shown in FIGS. 12 (A) and 12 (B), the left and right links 15C are attached to the main body 15A as the lid 15B via the left and right links 15C that can be bent and extended. The fertilizer input port 15b is opened and closed by swinging around the pivot point z for attachment to the link 15C in a bent state, and the link 15C is extended to be positioned immediately above the fertilizer input port 15b. In this state, that is, a state in which the fertilizer input port 15b is opened in a state where it becomes an umbrella with respect to the fertilizer input port 15b, it is provided.
[Brief description of the drawings]
[Fig. 1] Overall side view [Fig. 2] Overall plan view [Fig. 3] Rear view of essential part of fertilizer application device [Fig. 4] Notched side view of feeding device [Fig. 5] Longitudinal side view of feeding device [Fig. Fig. 7 is a plan view of the feeding case. Fig. 8 is a cutaway side view showing the open / closed state of the feeding case. Fig. 9 is a plan view of the feeding case. Fig. 10 is a vertical side view of the lid open state. FIG. 11 is an exploded vertical side view of the hopper / feeding case connecting portion. FIG. 12 is a side view of the hopper lid opening / closing state showing another embodiment.
DESCRIPTION OF SYMBOLS 1 Self-propelled machine body 2 Paddy field work apparatus 15 Hopper 16 Feeder 26 Fertilizer sensor 26a Light-receiving surface 27 Light transmission amount regulation sheet

Claims (2)

A paddy field work device is connected to the rear part of the self-propelled aircraft so that it can be raised and lowered, and a transparent or translucent fertilizer storage hopper is mounted on the rear part of the self-propelled aircraft between the driver's seat and the paddy field work device. A feeder that feeds out the fertilizer in the hopper is connected, and the rear wall of the lower part of the hopper has a light receiving surface facing forward, and the fertilizer with respect to the light receiving surface is discharged as the fertilizer is discharged from the hopper. Equipped with an optical fertilizer sensor that detects that the fertilizer in the hopper has run out when shading or dimming is no longer performed, and external light from the surrounding area of the fertilizer sensor to the hopper of the hopper It provided an optical intrusion amount regulating means for preventing or reducing the penetration of, the rear wall of the hopper in the upper than the fertilizer sensors with composing light quantity limiting sheet permeable to the light entering amount regulating means Installed, the behind the fertilizer sensors, fertilizing device paddy working machine is provided over a position below the fertilizer sensors from the position of the top of該肥charge sensor. The fertilizer application for a paddy field work machine according to claim 1 , wherein the light intrusion amount regulating means is means for shielding light with a light-shielding black color.

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