JPH06233621A - Handling chamber receiving net of thresher - Google Patents

Abstract

PURPOSE:To provide the subject net realized in high wear resistance and prevented from clogging. CONSTITUTION:Plural sheets of unit 21 having sieve meshes 23 are mutually connected through the male and female engaging parts provided at the respective side ends thereof, thus making up the objective handling chamber-receiving net. In this case, the sieve meshes 23 of each unit 21 are made by dividing with a synthetic resin material excellent in both wear resistance and water repellency.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a net for a thresher used in threshing equipment for threshing grains such as paddy rice, upland rice, wheat, and beans, which is particularly excellent in abrasion resistance and water repellency. By constructing the handling chamber net mainly of a synthetic resin material, excellent wear resistance is provided and clogging of the net is effectively prevented.

[0002]

2. Description of the Related Art For example, FIG. 9 shows a conventionally known handling room receiving net which is applied to a threshing device and contributes to threshing, cleaning, rough selection and the like.

In the drawing, reference numeral 1 designates a handling cylinder which is rotatably driven in a handling chamber, and 2 designates handling teeth which are provided on the peripheral surface of the handling cylinder 1 at intervals in the circumferential direction and the axial direction thereof. Here, below the handling cylinder 1, a handling chamber receiving net 3 curved in a shape along the peripheral surface thereof is arranged.

The handling room net 3 having a substantially rectangular plan shape has a wire diameter of about 2 to 2.6 φ and a mesh of about 9 to 13 mm as shown in the arrow aa view. It is configured by arranging a plurality of wire nets, such as crimp wire nets and woven wire nets, in the illustrated example, three wires in parallel, and such a receiving net 3 has a peripheral portion of each wire net 3a, 3b, 3c, The outward flange 4a located on the periphery of the mounting frame 4 and the support bar 4b located in the middle thereof are welded, screwed or the like via the mounting plate 5 to be positioned and held at a predetermined position.

The handling room receiving net 3 is capable of sufficiently exhibiting its original function under high rigidity, and is relatively easy to attach to the attaching frame 4 and is inexpensive. Therefore, it is most widely used in the threshing devices currently on the market.

[0006]

However, since such a conventional handling room net 3 made of steel wire is easily rusted and easily worn by the grain, the durability time is about 100 hours ( The service life is only about 1 to 2 years), and this endurance time is about 1/5 of the endurance time of the threshing device itself. It is necessary to replace the net 3 several times, which is largely isolated from the needs of labor saving and maintenance-free which are the recent trends.

In addition, the steel wire as a material for the handling room receiving net 3 has low water repellency, and, for example, when wet rice ears are treated, cuttings, straw debris, etc. are generated in the handling room receiving net 3. In such a case, the sieve of the handling room receiving net 3 is clogged relatively early and the threshing performance is deteriorated.
There was a problem that a large amount of broken rice etc. was generated.

The present invention advantageously solves the above-mentioned problems of the prior art, and can be used for both the lower handling type and the upper handling type.
(EN) A threshing device handling room net which is applied to a threshing device and exhibits excellent durability, and can effectively prevent clogging of sieves. It should be noted that the handling room here often includes a processing room used for processing the grains dropped at the second mouth, the cuttings of grains, and the like.

[0009]

According to the present invention, there is provided a threshing device handling room net, in which a plurality of unit units having sieves are interlocked by male and female engaging portions provided at their respective side end portions. Configure it by concatenating, where
The sieve of each unit is partitioned with a synthetic resin material having excellent abrasion resistance and water repellency, for example, ultrahigh molecular weight polyethylene having an average molecular weight of 1 to 5 million.

[0010]

[Operation] According to this handling room net, rust can be generated based on the function of the synthetic resin material having excellent abrasion resistance, in addition to sufficiently exhibiting its original functions such as shredding, cleaning, and rough sorting. Of course, wear is effectively prevented and the durability time is 4 to
It can be increased up to 5 times.

Further, since the nets here have sufficient water repellency, when threshing wet or wet grains, which are particularly apt to cause the problem of clogging, there is a problem such as straw scraps and cuttings. It is possible to sufficiently prevent it from being caught on or attached to. For this reason, clogging of the sieve will be effectively prevented for a long time,
In addition to a reduction in sorting efficiency and the prevention of broken rice and the like, the number of man-hours for cleaning the sieve is reduced, and the work efficiency is significantly improved.

Further, here, since the handling room receiving net is constituted by the connecting structure of the unit units, the resin molding apparatus can be made small enough to mold the unit units. The equipment cost and occupied space can be made much smaller than in the case where the entire handling room net is integrally molded, and in case of damage to the handling room net, it is easy to replace only the unit unit at the damaged part. Can be dealt with quickly. In addition, in the handling room receiving net here, the unit units are mutually connected by the male and female engaging portions, whereby an unexpected gap can be sufficiently prevented from occurring between the unit units.

[0013]

DESCRIPTION OF THE PREFERRED EMBODIMENTS The present invention will be described below based on illustrated examples. FIG. 1 is a diagram showing an embodiment of the present invention.
Shows the handling room receiving network of this invention.

This handling chamber receiving net 11, a part of which is shown in the figure, uses ultra high molecular weight polyethylene having an average molecular weight of 1 to 5 million as an example of a synthetic resin material excellent in abrasion resistance and water repellency. It can be configured by forming a crosspiece 12a extending in the axial direction of the handling cylinder and a crosspiece 12b extending in the circumferential direction of the handling cylinder by molding it, and the crosspieces are divided by the respective crosspieces 12a, 12b. The sieve 13 to be formed has a substantially square shape in its planar shape.
Here, the handling room receiving net 11 capable of setting the opening ratio of the sieve 13 to 40 to 75% usually has a thickness of 3 to 10 mm,
Each sieve 13 has a size of 8 × 8 to 25 × 25 mm.

Here, the aperture ratio of the sieve 13 is
The reason why 40 to 75% is set is that if it is less than 40%, the grain leakage efficiency decreases, and if it exceeds 75%, the durability of the receiving net 11 becomes too low, Also, the receiving network
If the thickness of 11 is 3 to 10 mm, sufficient rigidity cannot be obtained if it is less than 3 mm, but if it is more than 10 mm, ensure the required gap between the mesh 11 and the handle teeth. This is because there is a high possibility that Furthermore, the size of the sieve 13 is set to 8 × 8 to 25 × 25 mm because if the grain size is less than 8 × 8 mm, the grain leakage efficiency is too low. This is because even if it is applied to the processing chamber, the sorting function can hardly be exhibited.

Needless to say, such a handling room receiving net 11 can be integrally formed with a required size by molding once, but here, it is connected to a plurality of unit units by interconnection. By constructing the structure, it is possible to reduce the size of the resin molding device and reduce the facility cost accordingly. In this case, each of the unit units is attached to the mounting frame 4 in the same manner as described in the conventional example.
Can be fixed to the outward flange 4a and the support rail 4b.

Here, as shown in FIG. 2, the tops of the crosspieces 12a and 12b that partition the sieve 13 are formed so that their cross-sectional shapes are upward convex curves, and these crosspieces 12a are formed. When the contact area between the shavings 12b and the straws and the like is reduced, it is possible to effectively prevent them from adhering to the crosspieces 12a and 12b and eventually clogging the sieves 13.

This also means that the cross-sectional shapes of the crosspieces 12a, 12b can be as long as the required opening ratio of the sieve 13 can be secured and the handling chamber receiving net 11 can be provided with sufficient rigidity. The same applies when the shape is circular.

And in addition to this, a sieve 13
When the plane contour of each corner of the above is also curved as shown in the drawing, it is possible to effectively prevent the catching of straws and other entanglement, entanglement, etc., particularly in the corners of the sieve mesh. .

Therefore, according to the handling room receiving net 11, the wear resistance of the ultra-high molecular weight polyethylene increases the durability time.
It can be increased up to 400-500 hours, and its water repellency makes it especially suitable for threshing wet grains,
Straw and other adhesion to 12b, hooks, entanglements, etc.
As a result, clogging of the sieve 13 can be effectively prevented.

Here, the wear resistance of the handling chamber receiving net 11 is such that the crosspiece that is more susceptible to wear due to the grain, that is, the crosspiece 12a extending in the axial direction of the handling cylinder is stronger than the other crosspiece 12b. In that case, it will be further improved.

Further, the clogging of the sieve 13 can be achieved by making the tops of the crosspieces 12a and 12b curved as shown in the figure, or in addition to this, the corner contour of the sieve 13 can be changed. The curved shape can be more sufficiently prevented. Moreover, in the illustrated example, since the crossing portions of the crosspieces 12a and 12b are integrally formed, it is possible to reliably prevent the progress of the clogging caused by the straw chips or the like being caught in the crossing portions. .

FIG. 3 is an enlarged view showing another example of the present invention. The handling room receiving net 11 of this example has the receiving net itself by embedding and fixing the reinforcing cores 14 in the respective crosspieces 12a and 12b. The rigidity of is improved. Here, as the reinforcing core 14,
Woven wire mesh, hard steel wire, monofilament of synthetic fiber, twisted wire and the like can be used.

In the handling room receiving net 11, even when a metal wire is used as the reinforcing core 14, since it is completely embedded in the ultra high molecular weight polyethylene, there is no risk of rusting there. Therefore, the handling room receiving net 11 can maintain the desired rigidity for a long period of time.
Also in this embodiment, the cross-sectional shape of each crosspiece 12a, 12b may be circular, and one crosspiece 12a
It is also possible to make the height of the rails higher than that of the other rail 12b.

The examples shown in FIGS. 1 to 3 have been described above. As synthetic resin materials excellent in abrasion resistance and water repellency, polypropylene, polyoxymethylene, polyphenylene oxide, polycarbonate, polyamide,
Polyethylene terephthalate, polybutylene terephthalate, polyphenylene sulfide, polystyrene, acrylonitrile-butadiene-styrene resin, ethylene-acrylic acid copolymer and the like can also be used.

[0026]

[Comparative Example] In the following, when the synthetic resin material is ultra-high molecular weight polyethylene, the mesh of the handling room receiving net of the present invention shown in FIGS. 1 and 2 and the conventional handling room receiving net shown in FIG. A comparative test regarding clogging will be described.

-Test conditions Properties of test material Rice: Dried rice bunches were soaked in water for 40 seconds in the afternoon of the day before the test, then allowed to stand, and then soaked in water again for 20 seconds on the day of the test to allow water droplets to fall naturally. No. 2 dust: 3m of ^3rd dust generated during the test and ³ water
Supply of test material After threshing a total of 126 rice bunches, 1 m ³ of third dust was supplied into the handling room.

Test Results The state of clogging was evaluated by the aperture ratio of the sieve. The aperture ratio here is 100% when no clogging occurs. According to this evaluation, the aperture ratio of the invention product was about 70%, whereas that of the conventional product was about 5 to 6%.

Therefore, it is apparent that the invention product can very effectively prevent clogging of the sieve as compared with the prior art.

FIG. 4 is a diagram illustrating a unit unit used in the construction of the above-mentioned handling cylinder receiving net. In this example, a plurality of unit units are arranged in the circumferential direction or axial direction of the handling cylinder in the drawing. As shown, a single handling room receiving net is constructed by interconnecting them in the circumferential direction.

Here, the unit unit 21 shown in the drawing which extends long in the axial direction of the handling cylinder includes a crosspiece 22a extending in the width direction, in other words, in the circumferential direction of the handling cylinder, and a longitudinal direction, in other words, the axis line of the handling cylinder. Has a sieve 23 defined by a crosspiece 22b extending in the direction, and each mounting portion 24 provided at both ends in the longitudinal direction for attaching it to the outward flange 4a of the mounting frame 4, and In order to attach the to the support bar 4b, there is a mounting portion 25 provided at an intermediate portion in the lengthwise direction thereof. Allowed multiple through holes
It has 24a and 25a, respectively.

Here, preferably, the respective crosspieces 22a, 22b are provided.
By making the cross-sectional shape of the circle circular, the clogging of the sieve 23 is effectively prevented, and the entire unit unit 21 is, in the width direction thereof, as shown in the bb cross-sectional view.
By bending along the peripheral surface of the handling cylinder 1, the unit unit 21, and by extension, the mounting accuracy of the handling room net, is improved and the clearance between each unit 21 and the handling barrel 1 is made sufficiently uniform. Therefore, the uneven wear of the handling chamber receiving net is effectively prevented, and at the same time, the variation in the shedding performance, the sorting performance and the like depending on the receiving net position is removed.

Here, the shape and size of the mounting portion 24, the position, the number and the like of the through holes 24a can be appropriately changed in relation to the size and shape of the outward flange 4a of the mounting frame 4, Further, the positions, the numbers, and the dimensions of the mounting portions 25 and the through holes 25a can be appropriately changed in relation to the positions, the numbers, the dimensions, etc. of the support bars 4b.

And again, the unit unit 21 here
In order to enable connection between adjacent unit units by, for example, male and female engagement, a plurality of engaging portions 26 spaced apart in the length direction for connecting other unit units thereto are provided at both end portions. Have.

This engaging portion 26 shown here is a female engaging portion as shown in the enlarged sectional view of FIG.
Is paired with a male engaging portion 27 as shown in an enlarged sectional view in FIG. 6 to provide a direct connection between the unit units.
For this reason, here, the downward flanges 26a provided on both end portions of the unit unit 21 are cut out from the lower end side at predetermined positions in the longitudinal direction, and downwardly at the positions above the respective cutouts 26b. Receiving part that allows the fitting of a protruding projection-like entry part inside the flange 26a.
The engaging portion 26 is formed by forming 26c. Therefore, the cross-sectional contour of the receiving portion 26c has a hollow shape with a barb just corresponding to the entry portion fitted therein.

On the other hand, the male engaging portion 27 shown in FIG. 6 is a downward flange provided at the side end of the unit unit.
At the lower end portion of 27a, there is provided an upward entry portion 27b located corresponding to the receiving portion 26c. Here, the protrusion 27b, which is in the form of a barbed protrusion, is located outside the downward flange 27a by a distance substantially equal to the thickness of each portion of the lower end outer portion of the downward flange 26a.

Therefore, the mutual engagement of the male and female engaging portions 26, 27 here, in other words, the interconnection of the unit units,
While the outer surface of the downward flange 26a of the engaging portion 27 is in surface contact with the outer surface of the downward flange 26a of the engaging portion 26, by pushing the downward flange 26a against the flange 27a, the entry portion 27b is It is carried out by completely advancing it into the receiving part 26c based on its elastic deformation in the outward direction.In this way, after the engaging parts 26 and 27 are engaged once, the return part of the entering part 27b is The action will effectively prevent their accidental disengagement.

In the illustrated example, the engaging portions on both sides of the unit unit 21 are both female engaging portions 26, but at least one of them may be the male engaging portion 27. .

By connecting the required number of the unit units 21 to each other as described above, it is preferable to form a single handling chamber receiving net which is curved in advance along the peripheral surface of the handling barrel 1. This handling room net can be made to have its original function sufficiently by being screwed to the outward flange of the mounting frame 4 and the support bar 4b at the mounting portions 24 and 25 of each unit unit 21. Can be demonstrated.

Therefore, the receiving net here is screwed directly to the mounting frame 4, in other words, screwed without using the mounting plate 5, so that the receiving net can be received as compared with the prior art. It is extremely easy to attach and detach the net, and if the receiving net is locally damaged, only the damaged unit unit is replaced, facilitating the repair work and reducing the repair cost. Can be reduced.

FIGS. 7 and 8 are views showing another example of the respective engaging portions of the unit unit, and the female engaging portion shown in FIG.
28 is formed by forming a receiving portion having a substantially semi-circular planar shape on the side end surface 21a of the unit unit 21 by slightly projecting it downward from the side end surface 21a. The engaging portion 29 has a width slightly smaller than that of the side end surface 21a.
Each of them is configured by projecting an upward hook-shaped projection downward from the lower end of b. According to this example, the male side engaging portion 29 is pushed into the female side engaging portion 28 from above. , And the hook-shaped part of the male side engaging part 29,
By engaging with the lower edge of the side end surface 21a, mutual connection of the unit units 21 and reliable removal prevention can be realized.

The engaging portion structure for directly interconnecting the unit units 21 has been described above. The engaging portion structure includes a dovetail joint structure including dovetails and dovetail grooves,
It is also possible to use other known structures, such as a hook joint structure and a stilt hook joint structure. Further, in the illustrated example, the sieves divided by the crosspieces that are integrally formed with each other are
It is also possible to partition by a crosspiece of a woven net structure, which also sufficiently improves the durability of the receiving net and effectively prevents clogging.

[0043]

Therefore, according to the present invention, the durability can be remarkably improved as compared with the prior art, and the clogging of the sieve can be prevented extremely effectively. As a result, the man-hours required for replacement and cleaning can be sufficiently reduced, the threshing performance can be maintained for a long time, and the occurrence of broken rice can be sufficiently suppressed. Further, here, by constructing the handling room receiving net by the connecting structure of the unit units, the resin molding apparatus can be made small enough to mold the unit units, which reduces the facility cost and The occupied space can be reduced together, and in addition,
The damage to the handling room receiving network can be dealt with easily, quickly and inexpensively by simply replacing the unit unit of the damaged part. Furthermore, by connecting the unit units to each other with the male and female fitting portions, it is possible to sufficiently prevent the occurrence of an unexpected gap between the unit units.

[Brief description of drawings]

FIG. 1 is a partial plan view showing an embodiment of the present invention.

FIG. 2 is an enlarged view of a main part of FIG.

FIG. 3 is an enlarged view of a main part showing another example of the present invention.

FIG. 4 is a diagram illustrating a unit unit.

FIG. 5 is a cross-sectional view showing a female side engaging portion provided in the unit unit.

FIG. 6 is a sectional view showing a male side engaging portion.

FIG. 7 is a perspective view showing another female side engaging portion.

FIG. 8 is a perspective view showing another male side engaging portion.

FIG. 9 is a diagram showing a conventional example.

[Explanation of symbols]

 11 Handling room receiving net 12a, 12b, 22a, 22b Crosspiece 13, 23 Sieve 14 Reinforcement core 21 Unit unit 24, 25 Mounting part 24a, 25a Through hole 26, 28 Female side engaging part 26a Downward flange 26c Receiving part 27, 29 Male side engaging part 27a Downward flange 27b Entry part

Claims (1)

[Claims] 1. A plurality of unit units, which are meshing chamber receiving nets arranged along the lower side of the threshing unit of the threshing apparatus and having meshes, are provided at their respective side end portions. A threshing machine handling room in which the mesh of the handling room is constructed by interconnecting the male and female hooks provided, and the sieve of each unit is divided by a synthetic resin material with excellent wear resistance and water repellency. Receiving network.