JPH1189322A - Rice seed-clogging detector in direct seeding machine - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide the subject apparatus having a simple structure, exhibiting a high accuracy, and capable of quickly detecting the state of clogging by placing an optical sensor-type clogging detector which detects clogging in a tube for flowing down rice seeds. SOLUTION: This apparatus is constructed in such a manner that rice seeds are directly seeded on a field through a tube 21 for flowing down rice seeds from a rice seed hopper, and an optical sensor-type clogging detector 32 which detects the state of clogging in the tube 21 for flowing down rice seeds by intercepting light path is attached on the tube. Further, the above-mentioned clogging detector 32 can be placed on the upper-side inner wall of the tube 21 for flowing down rice seeds which is placed in an inclined state. Furthermore, a hood 34 can be placed so that the rice seeds which flow down near the upper- side position where said clogging detector 32 is placed by-pass the detecting means 32.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a device for detecting seed clogging of a direct sowing machine.

[0002]

2. Description of the Related Art Conventionally, as a seed rice clogging detecting device of a direct seeding machine, an impact due to collision of seed rice flowing down into a pipe for flowing the seed rice or into a groove forming device for forming a groove for direct sowing in a field is detected. 2. Description of the Related Art It is well known that a detecting means is provided, which detects that no impact is generated in the detecting means due to the clogging of the seed rice and detects the clogged state of the seed rice.

[0003]

However, in the above-described conventional apparatus for detecting seed clogging of a direct sowing machine, it is necessary to provide mechanical means and electric means for sensing an impact, and Since it is impossible to judge that clogging is present unless a continuous impact is applied for a long time, the detection is delayed, and there is a high possibility that vibrations or the like generated in other places are erroneously detected.

SUMMARY OF THE INVENTION The present invention has been made in view of the above circumstances, and has as its object to provide a seed padding detection device for a direct sowing machine which has a simple structure and can detect a clogging state quickly with high reliability.

[0005]

[Means for Solving the Problems]

(Structure) The seed rice clogging detection device of the direct seeder according to claim 1 of the present invention is configured to directly sow a seed from a seed rice hopper to a field through a seed rice downflow pipe, and the light from the clogged seed rice in the seed rice downflow pipe is provided. It is characterized in that a clogging detection means of an optical sensor type for detecting clogging by blocking a path is provided.

(Operation) According to the first aspect of the present invention, since the clogging detection means of the optical sensor type is provided in the seed rice flow down pipe, when the seed is clogged in the pipe, the goodness from the clogged portion is improved. When the seed rice flowing from the alligator accumulates one after another, and the accumulated seed rice reaches the optical sensor location, the light is blocked by the seed rice that has entered the optical path for clogging detection. The state will be detected.

(Effects) Therefore, according to the configuration of claim 1 of the present invention, the durability is higher as compared with the conventional one that detects the presence or absence of a mechanical impact and detects the clogged state of the seed rice. In addition to this, there is an advantage that the possibility of erroneous detection is small, and it can be determined in a relatively short time whether or not a clogged state exists.

(Structure) The seed rice clogging detection device for a direct seeding machine according to claim 2 of the present invention is the device according to claim 1, wherein the seed rice padding detecting device is provided on an inner wall portion above the seed rice downflow pipe that is obliquely arranged. It is characterized in that clogging detecting means is arranged.

(Operation) According to the configuration of the second aspect of the present invention, the clogging detecting means is arranged on the inner wall portion above the seed rice flow pipe which is obliquely arranged. Since most of the seed rice flows down the lower part of the seed rice downflow pipe, there is almost no seed rice passing through the optical path for clogging detection arranged on the upper side. It can detect the presence of seed rice.

(Effects) Therefore, according to the structure of the second aspect of the present invention, a simple structure is adopted in which the seed rice flow pipe is disposed obliquely and the optical sensor is disposed above the flow passage. By suppressing the possibility that the normal falling seed rice is detected as having clogged by mistake,
The detection accuracy can be improved.

(Structure) According to a third aspect of the present invention, there is provided a direct seeding rice seed clogging detecting device according to the first or second aspect, which flows down to a position on the upper side near the position where the clogging detecting means is disposed. An eaves structure is provided to allow the seed rice to flow down while avoiding the clogging detection means.

(Effect) According to the third aspect of the present invention, an eaves structure is provided which allows the seed rice flowing down to a location on the better side near the location of the clogging detecting means to flow down while avoiding the clogging detecting means. Therefore, the eaves structure guides the falling seeds to flow down the clogging detecting means.

(Effects) Therefore, according to the configuration of the third aspect of the present invention, the eaves structure prevents the unjustified clogging of the falling seeds from being detected.
There is an advantage that detection accuracy of clogging detection can be increased.

[0014]

Embodiments of the present invention will be described below with reference to the drawings. As shown in FIG. 1, a seedling planting device 4 as a planting part is connected to a rear of a riding type traveling body having a pair of left and right front wheels 1 and rear wheels 2 via a link mechanism 3 so as to be able to move up and down. The seedling planting apparatus 4 is equipped with the direct sowing apparatus A, and the fertilizer applicator D is equipped at a position on the front side of the seedling rest 14 and immediately after the driving seat 67 of the driving section 9 to mount the rice transplanter. A direct sowing machine with a fertilizer application device is used.

A pair of planting mechanisms 1 in the seedling planting apparatus 4
5 and 15 are provided with a connecting tool 80 for connecting the planting arms 15a and 15a to each other, and are connected to a transmission rod 81 for driving a seed unreeling mechanism 19 described later.

The fertilizer applicator D is used to fertilize powdery and granular fertilizer by flowing down into a ditch formed in a field.
2. Fertilizer feeding device 83, fertilizer application hose 84, and blower 2
0 is provided. By blowing of the blower 20,
The fertilizer fed by the fertilizer feeding device 83 through the fertilizing hose 84 is conveyed by wind toward each fertilizer producing device 70. And in this direct sowing machine with fertilizer application,
The fertilizer ditch device 70 is supported by the ground float 58 at a position near the side of the planting streak of the seedling by the planting mechanism 15. (See Fig. 3)

Next, the direct sowing apparatus A will be described. FIG.
As shown in FIG. 2 and FIG. 2, the direct sowing apparatus A
Seed paddy hopper 18 for storing seed paddy, seed pad feeder 19 for feeding seed paddle downward by a predetermined amount from there, and seed padding hose 21 as seed pad downflow pipe for transporting the fed paddle to seed padding groove device 17 And is supported by being attached to a support frame 88 attached to the rear of the planting case 72. Then, in the seed paddle feeding mechanism 19, a feed roll drive gear 86 is attached to an end of the feed shaft 85 in an integrally rotating state, and a drive arm of a pinion gear 87 that meshes with the feed roll drive gear 86 and the transmission rod 81 described above. And the seed feeding mechanism 19 is driven by the turning power of the planting mechanism 15. Thereby, the various paddy feeding mechanisms 19 are driven in conjunction with the seedling planting movement, take out the seed paddy from the seed paddle hopper 18 by a set amount, and pass through the seed padding hose 21 to the seed paddy groomer 17.
Seed paddy can be supplied to the ditch of the field created by the above.

As shown in FIG. 2 and FIG. 3, the six seed paddy cultivators 17 are supported by a single support frame 71 in the lateral direction of the machine body, and the support frames 71 are dispersedly arranged in the longitudinal direction. Via a plurality of quadruple link mechanisms G
It is connected to the rear end of the planting case 72. The quadruple link mechanism G includes a vertical plate member 73 fixed to the support frame 71,
A support member 74 on the side of the planting device, and upper and lower swing links 75,
A support member 74 is attached to a connecting plate 77 which is bolted to the rear end of the planting case 72 by a buckle 78 and upper and lower hooks (not shown).
As a result, by operating the buckle 78, the quadruple link mechanism G can be detachably attached to the connecting plate 77. When the seedling ditching device 17 is moved to the working level with the seedling planting device 10 as a working body, a groove is formed in a field, and the seed rice unreeling mechanism is formed in the groove via a seed rice hose 21 serving as a seed rice downflow pipe. The seed rice dropped and supplied from 19 is supplied.

As shown in FIGS. 1 to 4 and FIG. 6, the soil raised on the side of the groove M formed by the seed rice cultivator 17 is directly leveled behind the seed groomer 17 after the direct sowing. Seed paddy T
A soil covering plate 31 # for covering the soil is provided for each strip. Then, each covering plate 31 is swingably supported by a support rod 22 made of a round bar or a round pipe material which is erected to the right and left over the width of all the strips, so that the boss portion 31A at the base end is restrained from lateral displacement. It is fitted to the outside freely. Boss part 31A
The rocking action plate 31B, which is continuously connected to the ground, regulates the position when swinging downward by its own weight and the position when swinging upward due to the reaction force from the ground so that it can swing only within a predetermined range. For this purpose, a stopper pin 23 is provided so as to penetrate the support rod 22 so as to partially protrude up and down, and
The boss portion 31 of the earth covering plate 31 by swinging around the center axis Q
A non-rotating stepped portion 31C formed by cutting out one side end of A is restricted from coming into contact with the protruding portion of the stopper pin 23. In addition, as shown in FIG.
The angle posture about the center axis Q of the stopper pin 23 as viewed from the side with respect to the pair of left and right mounting stays 24, 24 integrally extended in a state of extending rearward from the support frame 71 supporting 7 °. The support rod 2 can be changed and adjusted appropriately.
The mounting position of the boss 25 for bolting the bolt 2 to the mounting stays 24 is fixed to the mounting stay 24 by a bolt 26.
7 can be fixed at an appropriate position along the long hole 27. As shown in FIG. 2, when the earth covering plate 31 is not used, the earth covering plate 31 is held in a suspended state for each earth covering plate 31 by a lifting rod 28 provided with a spring in the middle. The hook of the lifting rod 28 is
A hole 29 to be hooked on 1 is provided in the soil covering plate 31B.

Although the above-mentioned earth covering plate 31 is shown as covering the earth in a state of being lowered by its own weight, as shown in FIG. 8, the earth covering plate 31 may be lowered by the winding spring 30 so as to be in the earth covering posture. . A plurality of locking holes a for fixing the winding spring 30 to the mounting stay 24 are provided so that the biasing force of the winding spring 30 can be changed.

It is to be noted that the earth covering plate 31 may be formed of only a series of left and right plate members so that the earth can be covered over each line, instead of being provided for each line.

Next, means for detecting seed clogging will be described. As shown in FIG. 4 and FIG. 5 (b), the seed rice hose 21 is inclined rearward and downward on the way to the seed rice production device 17. A clogging detecting means 32 for detecting a clogging of the seed rice T is disposed at a rear portion above the oblique portion. This clogging detection means 3
Numeral 2 is attached and mounted from the outside through a hole 33 formed in the seed rice hose 21, and is lower in the seed rice flowing direction than an eave portion 34 as an eave structure that is inserted into the seed rice hose 21 in a protruding state. Light receiving elements 3 on the left and right sides
5 and the light emitting element 36 are arranged in a state of being spaced apart by several seeds. The light receiving signal at the light receiving element 35 is
The data is input to a control device (not shown) provided in the traveling body. In addition, a seed rice remaining amount sensor 37 disposed near the lower end portion in the seed rice hopper 18 is provided, and a detection signal of the seed rice remaining amount sensor 37 is also input to the control device. Then, as shown in FIG.
When the seed rice begins to be clogged near the end of the seed rice cultivation device 17 or the seed rice hose 21 due to, for example, adhesion of mud, the seed rice starts to stagnate from the clogged portion, and finally, the light emitting element 36 and the light receiving element 35 in the seed rice clogging detecting means 32. And the seed pad T enters between them to block the light path.
The light signal emitted from 6 stops reaching the light receiving element 35,
When the control device determines that the light receiving element 35 does not receive light for a predetermined time or more, the control device displays on the display panel (not shown) in the control section that the seed rice is in a clogged state. It should be noted that the clogging state may be displayed for each direct sowing line, and it is not necessary to indicate whether the seed rice hose 21 is clogged in any of the direct sowing lines, but only the fact that clogging is occurring is displayed. May be.

If the clogging detecting means is provided at the upper side wall of the inclined portion of the seed rice hose 21 as described above, most of the seed rice flows down near the lower wall of the inclined portion of the normal falling seed rice. Therefore, erroneous detection due to the light path between the light emitting element 36 and the light receiving element 35 being interrupted by the flowing seed rice is suppressed, and the control device is also unable to block the non-detection state of the light receiving element 35 for a very short time. We do not judge that it is a state. Further, as shown in FIG. 5, the eaves portion 34 repels seeds that may pass through the optical path between the light emitting element 36 and the light receiving element 35, so that the light emitting element 36 and the light receiving element 3
5, and the possibility of erroneous detection can be further reduced.

[Another Embodiment] Light from a light emitting element is reflected by a reflecting means and the reflected light is received by a light receiving element, so that a clog is detected between the reflecting means and the light emitting element or the light receiving element. You may make it set the space where the clogged seeds for use enter.

[Brief description of the drawings]

FIG. 1 is an overall side view showing a riding type rice transplanter and a direct sowing apparatus.

FIG. 2 is a side view showing a direct sowing apparatus.

FIG. 3 is a plan view showing a lower part of the planting device and the direct sowing device.

FIG. 4 is a longitudinal sectional side view showing a lower part and the like of the direct sowing apparatus.

FIG. 5 is a vertical front view (a) and a vertical side view (b) showing clogging detection means when there is no clogging, and a vertical front view (c) showing clogging detection means in a clogged state.

FIG. 6 is a longitudinal rear view showing a covering plate and the like.

FIG. 7 is a vertical cross-sectional front view showing soil covering a direct sowing location.

FIG. 8 is a longitudinal sectional side view showing a cover plate according to another embodiment.

[Explanation of symbols]

 18 seed rice hopper 21 seed rice flowing down pipe 32 clogging detection means 34 eave structure

Claims (3)

[Claims] 1. An optical sensor type clogging detecting means configured to directly sow a seed from a seed rice hopper to a field through a seed rice downflow pipe, and to detect clogging by blocking an optical path of the clogged seed rice in the seed rice downflow pipe. A seed rice clogging detection device of a direct sowing machine provided with. 2. The seed rice clogging detection device for a direct sowing machine according to claim 1, wherein the clogging detection means is arranged on an inner wall portion above the seed rice downflow pipe arranged obliquely. 3. An eaves structure for allowing seed rice flowing down to a location on the upper side near the location of the clogging detection means to flow down while avoiding the clogging detection means is provided.
Or the seed rice clogging detection device of the direct sowing machine according to 2.