JP2505367B2 - Threshing equipment handling room net - Google Patents

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, and particularly, it has excellent wear resistance and water repellency. By forming the net-receiving member mainly with a synthetic resin material, excellent durability is provided and clogging of the net is effectively prevented.

[0002]

2. Description of the Related Art For example, FIG. 11 shows a conventionally known handling room receiving net which is applied to a threshing device and contributes to threshing, cleaning, rough selection, etc.

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]

In the thresher handling chamber receiving net of the present invention, in particular, the handling chamber receiving net is fixed by juxtaposing a plurality of unit units having a sieve in one mounting frame. In addition to the above, the unit unit is made of a synthetic resin material having excellent abrasion resistance and water repellency, preferably 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.

Moreover, since the handling room receiving net is constructed by the juxtaposed structure of a plurality of unit units, the required molding can be performed with a relatively small resin molding facility, and the facility cost can be reduced. In addition, damage to the net receiving member can be dealt with by replacing only the damaged unit unit, so that the replacement work can be performed easily and quickly, and damage to the net member can be prevented. It is possible to improve economical efficiency by eliminating wasteful replacement of the unfit mesh member. On the other hand, by forming the mesh member with a plurality of relatively small unit units, the resin of the unit units can be molded by resin so that the flow of the synthetic resin material in the molding mold can be controlled by its molecular weight. Regardless of the size, it is possible to always perform smoothing and sufficiently prevent the occurrence of molding defects in the unit unit, and eventually in the sieve and the like.

[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 receiving member of this invention.

The net member 11 has an average molecular weight of 1 as an example of a synthetic resin material excellent in abrasion resistance and water repellency.
A crosspiece that extends in the axial direction of the handling cylinder by molding of 0 to 5 million ultra high molecular weight polyethylene.
a and a crosspiece 12b extending in the circumferential direction of the handling cylinder, respectively.
The sieve 13 divided by b has a substantially square shape in its plan view. Here, the mesh member 11 which can make the opening ratio of the sieving 13 40 to 75% usually has a thickness of 3 to 10 mm, and each sieving 13 is 8 × 8.
It has dimensions of ~ 25 x 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, Further, the thickness of the mesh receiving member 11 is 3 to 10 mm, while sufficient rigidity cannot be obtained if the thickness is less than 3 mm, while if the thickness is more than 10 mm, it is required between the mesh receiving member 11 and the handle teeth. This is because there is a high possibility that it will not be possible to secure the gap. Furthermore, the size of the sieve 13 is 8 × 8 to 25 × 25.
If it is less than 8 × 8 mm, the grain leakage efficiency is too low, while if it exceeds 25 × 25 mm, it can exert most of the sorting function even if it is applied to the processing chamber. It is due to disappearance.

Needless to say, such a net member 11 having a required size can be integrally formed by a single molding process, but here, it is composed of a plurality of unit units. As a result, it is possible to reduce the size of the molding equipment and the equipment cost associated therewith, and sufficiently prevent the occurrence of molding defects in the unit unit. In this case, the respective unit units are fixed in juxtaposition to the outward flange 4a and the support bar 4b of the mounting frame 4 in the same manner as described in the conventional example to form a handling room net.

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. In addition, this means that the cross-sectional shape of the crosspieces 12a, 12b is circular as long as the required opening ratio of the sieve 13 can be secured and the mesh member 11 can be provided with sufficient rigidity. Is also the same.

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 net constituted by the net member 11, the durability time can be increased to 400 to 500 hours due to the wear resistance of the ultra high molecular weight polyethylene. , Due to its water repellency, especially when threshing wet grains, the attachment of straw debris and other to the crosspieces 12a, 12b,
It is possible to effectively prevent clogging of the sieve 13 such as catching or entanglement.

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

The clogging of the sieve 13 can be achieved by forming the tops of the crosspieces 12a and 12b into a curved shape 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. In the net receiving member 11 of this example, a reinforcing core 14 is embedded and fixed in each of the crosspieces 12a and 12b to fix the net itself. It has increased rigidity. 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 this net receiving member 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 can maintain the desired rigidity for a long period of time. Also in this embodiment, the cross-sectional shape of each of the crosspieces 12a and 12b may be circular, and the height of one crosspiece 12a may be higher than that of the other crosspiece 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.

[0025]

[Comparative Example] Below, when the synthetic resin material is ultra-high molecular weight polyethylene, the handling room receiving net using the receiving net member 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 of sieves with a net will be described.

・ Test conditions Properties of test material Rice: Dried rice bundles 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 view showing an example of a unit unit which constitutes the net member 11 as described above. In this example, a plurality of unit units are attached to one mounting frame in the circumferential direction of the handling cylinder. Alternatively, they are arranged side by side in the axial direction, that is, in the circumferential direction shown in the drawing, to form one net-receiving member.

Here, the unit unit 21 shown in the figure, 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 mesh 23 defined by a crosspiece 22b extending in the direction, and each mounting portion 24 provided at both ends in the longitudinal direction for mounting it on 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 longitudinal 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 net member is improved, and the clearance between each unit unit 21 and the handling cylinder 1 is made sufficiently uniform. This effectively prevents uneven wear of the handling chamber receiving net, and at the same time eliminates variations due to the receiving net position, such as shattering performance and sorting performance.

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.

Also, the unit unit 21 here
In order to connect adjacent unit units to each other by, for example, male and female engagement, at least one side end portion, in the figure both side end portions, in the longitudinal direction for connecting another unit unit thereto, It has a plurality of engaging portions 26 which are separated from each other.

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 side engaging portion 27 shown in FIG. 6 is a downward flange provided at the side end portion 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 possible to preferably form the unit unit 21 in a pre-curved state along the peripheral surface of the handling cylinder 1. The net member composed of the connecting structure is the mounting portions 24 and 25 of each unit unit 21, and is the one mounting frame 4
By screwing the outer flange and the support bar 4b, respectively, a handling room net which can fully exhibit the original function of the net is constructed.

Therefore, the mesh member here is screwed directly to the mounting frame 4, in other words, it is screwed without using the mounting plate 5, so that the mesh member can be compared with the prior art. It is extremely easy to attach and detach the receiving net member, and if the receiving net is locally damaged, replace only the damaged unit unit to facilitate the repair work. The repair cost can be reduced.

FIGS. 7 and 8 are views showing other examples 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 formed 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.

Although the engaging portion structure for directly connecting 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.

FIG. 9 is a diagram showing another example of the unit unit. The unit unit 21 shown here is provided at both end portions thereof,
It has upward flanges 30 provided at intervals in the length direction. As shown in FIG. 10, the upward flange 30 is provided in the channel-shaped groove 4d of the T-shaped bracket 4c provided on the mounting frame 4 and extending in the axial direction of the handling cylinder 1. By inserting the tip of the navel into the mounting frame 4 of the unit unit 21,
Function to bring about indirect interconnection of.

Therefore, according to this example, the unit unit 21
Therefore, even if the mounting portions 24 and 25 shown in FIG. 4 are omitted, it is possible to mount them sufficiently firmly.

The upward flange 30 in this example can be provided only in the vicinity of the end portion in the length direction of the unit unit 21 in relation to the mounting strength of the unit unit 21 and the like, and the entire length thereof. It can also be provided over.

Although the present invention has been described above based on the illustrated example, in the illustrated example, the sieves which are divided by the respective crosspieces which are integrally formed with each other can be divided by the crosspiece of the woven net structure. By this, also, the durability of the handling room receiving net can be sufficiently improved and clogging can be effectively prevented.

[0046]

Therefore, according to the present invention, by constructing a unit unit of a synthetic resin material having excellent wear resistance and water repellency, it is possible to significantly improve durability as compared with the prior art. In addition, it is possible to prevent clogging of sieves very effectively, resulting in a sufficient reduction of the man-hours required for replacing the net and cleaning, and maintaining threshing performance for a long period of time. Therefore, the generation of broken rice will be sufficiently suppressed. In addition, here, the resin molding equipment is made small enough to mold the unit units by forming a handling room net by fixing a plurality of unit units side by side in one mounting frame. Therefore, in addition to the equipment cost, the space occupied by the resin molding equipment can also be effectively reduced. In addition, in this handling room receiving network, damage to it can be dealt with simply and quickly by partial replacement of the unit unit and at low repair cost. Furthermore, by forming the net member with a plurality of relatively small unit units, the flow of the synthetic resin material in the molding mold at the time of molding the unit unit can be controlled by controlling its molecular weight. Regardless of the size, it is possible to always smooth and surely and sufficiently prevent the occurrence of molding defects in the sieve and the like.

[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 another example of a unit unit.

FIG. 10 is a cross-sectional view showing an operating state of the upward flange.

FIG. 11 is a diagram showing a conventional example.

[Explanation of symbols]

 11 Receptacle member 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 27, 29 Male side engaging part 30 Upward flange

Claims (2)

(57) [Claims] 1. A handling room receiving net disposed along the lower side of a handling barrel of a threshing device, the handling room receiving net having a plurality of unit units. A net for a thresher handling room, which is constructed by fixing it side by side on a mounting frame, and each unit is made of a synthetic resin material with excellent wear resistance and water repellency. 2. The thresher receiving chamber receiving net according to claim 1, wherein the synthetic resin material is ultra-high molecular weight polyethylene.