JPH0217Y2 - - Google Patents

Description

[Detailed Description of the Invention] <Industrial Application Field> The present invention relates to a seeding sensor device for various types of seeding machines.

<Prior Art> This type of seeding sensor device is known, for example, as described in Japanese Utility Model Application Publication No. 56-12925.
In this conventional system, an impeller is rotatably installed in the middle of the sowing chute that guides the seeds fed out from the feeding device, and the fall of the seeds is detected by the rotation of this impeller, and the seeds are passed through a detection circuit to an alarm circuit. It was designed to make it work.

<Problems to be solved by the invention> The rotation of the impeller is detected by a sensor, but there are problems with the waterproof and dustproof performance of the seeding sensor at the element level of light emitting diode phototransistors. Ta. That is, it was important how to make this sensor waterproof and dustproof.

On the other hand, there is a problem in that if the device is completely waterproof and dustproof, the device becomes bulky and maintenance becomes difficult.

Therefore, the present invention attempts to achieve the tradeoffs of waterproofing, dustproofing, and easy maintenance of the sensor with an extremely simple structure.

<Means for solving the problem> In order to achieve the above object, the feature of the present invention is that an impeller is rotatably provided in the middle of the sowing chute, and the delivered seeds are applied to the impeller. In the seeding sensor device, the impeller rotates and the rotation of the impeller is detected by a sensor to detect the seeding state. fixed,
A sensor is provided facing the rotating disk, and this sensor is fixed in a waterproof and dustproof box, and the box is detachably fixed to the side of the seeding chute via a watertight packing.

<Embodiment> Hereinafter, the present invention will be described in detail with reference to the illustrated embodiment. Figures 2 and 3 illustrate a direct sowing machine in flooded soil, 1 is a machine body equipped with an engine, etc., and transmission cases 2 are attached on both sides. A drive wheel 3 is provided via the. 4
is a support frame that protrudes rearward from the fuselage 1,
A handle 5 is attached to the rear end via an upwardly curved part.
is provided. 6 is a main float, which is arranged on the lower side of the fuselage 1. Reference numeral 7 denotes a transmission case, which is supported by the frame 4 by a support shaft 8. The transmission case 7 is provided with a pair of upper and lower tool bars 9 and 10 that extend left and right, and the upper tool bar 9 has a seed tank 11 and the lower tool bar 10.
A pair of seeding floats 12 are provided on each side.

The seed tank 11 has a feeding device 13 on the lower side. The feeding device 13 includes a feeding roll 14 rotatably provided at the lower part of the seed tank 11, and is configured to intermittently feed the seeds A in the seed tank 11 downward by rotation of the feeding roll 14. has been done. A transmission case 7 is attached to the left and right feeding rolls 14.
A drive shaft 15 mounted on the shaft is inserted through the drive shaft 15, and the feed roll 14 is rotationally driven by the drive shaft 15. A seeding chute 16 is provided below the feeding device 13. The sowing chute 16 has a bifurcated branch part 17 on the lower side, and is configured to guide the intermittently fed seeds A into each branch part 17 in two for sowing. Therefore, in this case, it is possible to sow four rows.

The seeding float 12 is connected to a link 18 fixed to the lower toolbar 10. A notch 19 is formed in the left and right sides of the seeding float 12 so as to be recessed from the rear side, and a furrower 20 and a soil covering member 21 are provided in the front and rear corresponding to the notch 19, and a groove cutter 20 and a soil covering member 21 are provided in the front and rear in correspondence with the notch 19. A seeding guide plate 22 that connects the lower end of each branch portion 17 of the seeding chute 16 is provided at the seeding chute 16 .

In the middle of the branch part 17 of the seeding chute 16,
As shown in FIGS. 4 and 1, a bulge 23 is formed, and a rotating shaft 24
An impeller 26 including blades 25 is provided. The impeller 26 receives the seeds A intermittently dispensed from the dispensing device 13 on its blades 25 and rotates in the direction of the arrow.

One end of the rotating shaft 24 is rotatably supported by a bearing member 27 fixed to the side surface of the branching portion 17 via a needle bearing 28 and a sealing material 29. This bearing member 27 has an outwardly projecting flange portion 30, and bolt insertion holes 31 are formed in this flange portion 30 at three equal positions in the circumferential direction. The branch part 1 corresponds to this bolt insertion hole 31.
A bolt 32 is fixed to the side surface of 7 by welding.
By screwing a nut 33 onto this bolt 32, the bearing member 27 is removably fixed.

The rotating shaft 24 further projects outward from the outer end surface of the bearing member 27, and has a rotating disk 3 at the projecting end.
4 is fixed. A waterproof and dustproof box 35 is attached to cover the rotary disk 34.

That is, this box 35 is formed as a cylinder with a bottom, and has a flange 36 on the opening side of one end, and the flange 36 has bolt insertion holes 37 at the same pitch as the flange portion 30 of the bearing member 27. It has been established. The flange 36 of this box 35 is
The bolt 32 contacts the flange portion 30 of the bearing member 37 via the spacer 38 and packings 39, 39, and the bolt 32 is inserted into the bolt insertion hole 37, and the cap nut 40 is screwed onto the bolt 32. The box 35 is detachably fixed to the flange portion 30 of the bearing member 27.

A sensor mounting portion 41 is provided within the box 35, and a sensor 42 is fixed to this mounting portion 41. This sensor 42 is a photointerrupter type sensor and consists of a light emitter and receiver. This sensor 42
faces the rotary disk 34, and the end face of the rotary disk 34 is painted differently into a reflective portion and a non-reflective portion.

Note that the waterproof and dustproof box 35 has a hole 44 for passing the lead wire 43 of the sensor 42, and since a rubber gasket 45 is fitted into this hole 44, it is completely waterproof and dustproof. .

Note that the present invention is not limited to the above embodiments.

<Effects of the invention> According to the invention, it is possible to install a waterproof and dustproof box,
It is easy to remove, and since the sensor is completely waterproof and dustproof, there is no failure, and since the sensor is integrally fixed to the box, maintenance is easy.

[Brief explanation of the drawing]

Fig. 1 is a sectional view taken along the - line in Fig. 4, showing the main parts of the embodiment of the present invention, Fig. 2 is a side view of the seeding machine, Fig. 3 is a partial rear view of the same, Fig. 4 is It is a sectional view of a seeding sensor part. 16... Seeding chute, 24... Rotating shaft, 26
... Impeller, 34 ... Rotating disk, 35 ... Box, 39 ... Packing, 42 ... Sensor.

Claims (1)

[Claim for Utility Model Registration] An impeller is rotatably provided in the middle of the sowing chute, the delivered seeds are applied to the impeller and rotated, and the rotation of the impeller is detected by a sensor to determine the sowing state. In the seeding sensor device configured to detect a seeding chute, the shaft end of the impeller projects outward from the seeding chute, and a rotary disk is fixed to this projecting end,
A seeding sensor device characterized in that a sensor facing the rotary disk is provided, the sensor is fixed in a waterproof and dustproof box, and the box is detachably fixed to the side of the seeding chute via a watertight packing. .