JP2501538B2 - 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 constructing the handling chamber net mainly of ultra-high molecular weight polyethylene, it is possible to provide excellent durability and effectively prevent clogging of the sieve.

[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]

DISCLOSURE OF THE INVENTION The handling room net of the thresher according to the present invention has a sieve having excellent abrasion resistance and water repellency, for example, an average molecular weight of 1,000,000 to 100.
Partitioned with 5 million ultra high molecular weight polyethylene, opening ratio of sieve is 40-75%, sieve size is 8 ×
It is 8 to 25 × 25 mm, and the thickness of the handling room net is 3 to 10 mm.

[0010]

[Operation] According to such a handling room net, shedding, cleaning,
In addition to being able to fully exhibit its original functions such as rough screening, the abrasion resistance of ultra-high molecular weight polyethylene not only causes rust on the net, but also effectively prevents abrasion and improves durability time compared to conventional products. It can be increased up to 4 to 5 times.

The net used here is, for example, straw scraps when threshing a wet or wet grain which is apt to cause a clogging problem due to the action of the ultra high molecular weight polyethylene having sufficient water repellency. It is possible to sufficiently prevent catching, adhesion, etc., such as cuttings of the ear. As a result, clogging of sieves will be effectively prevented for a long time, which will reduce the sorting efficiency, prevent crushed rice and the like, and prevent man-hours for cleaning sieves. Is reduced and work efficiency is significantly improved.

Moreover, here, the opening ratio of the sieve is 40 to
When it is set to 75%, the grain leakage efficiency can be increased without lowering the durability of the net. Here, if it is less than 40%, the leakage efficiency of grains and the like is lowered and the sorting efficiency is deteriorated, and if it exceeds 75%, the rigidity of the receiving net is lowered and its durability is lowered. In addition, the clearance between the receiving cylinder and the net in the circumferential direction and the axial direction of the handling cylinder varies, and the uneven wear of the net and the fluctuation of the shedding performance and the sorting performance due to the net position increase. . Also,
The sieve size of 8 × 8 to 25 × 25 mm makes it possible to bring about an excellent grain leakage efficiency under a sufficient net receiving rigidity and yet a sufficient sorting function. Further, by setting the thickness of the handling chamber receiving net to 3 to 10 mm, it is possible to effectively prevent a decrease in the rigidity of the receiving net while ensuring a required space between the receiving net and the handling tooth. Here, if it is less than 3 mm, the net rigidity becomes too low, while 1
If it exceeds 0 mm, the side wall surface of the crosspiece tends to be clogged with chips, straw debris, and the like, which also causes clogging of the sieve.

[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.
Indicates a reception room receiving network of the present invention.

The handling chamber receiving net 11 has an average molecular weight of 1 as an example of a synthetic resin material excellent in abrasion resistance and water repellency.
It is possible to form the crosspieces 12a extending in the axial direction of the handling cylinder and the crosspieces 12b extending in the circumferential direction of the handling cylinder by using, for example, molding of ultra high molecular weight polyethylene of 0,000,000 to 5,000,000. The sieving mesh 13 that can be configured and is divided by the crosspieces 12a and 12b has a substantially square shape in its plan view. Therefore, it is not essential that the square be exact. Here, this handling room receiving net 11
Has a thickness of 3 to 10 mm, and its sieve mesh 13
The opening ratio is 40 to 75%, and the size of each sieve 13 is 8 x 8 to 25
X 25 mm.

Here, the aperture ratio of the sieve 13 is 40 to
The reason why 75% is set is that if it is less than 40%, the grain leakage efficiency decreases, and if it exceeds 75%, the durability and rigidity of the net 11 are too low. In addition, it is not possible to obtain sufficient rigidity when the thickness of the receiving net 11 is 3 to 10 mm if it is less than 3 mm, while if the thickness is more than 10 mm, the required space between the receiving net 11 and the treating teeth is required. Since it is not possible to secure a gap, the risk of broken rice etc. increases, and the side wall area of the crosspiece becomes too large.
This is because straw chips and the like tend to adhere to the side wall surface. Furthermore, the size of the sieve 13 is 8 × 8 to 25 ×
If it is less than 8 × 8 mm, the grain leakage efficiency is too low, while if it exceeds 25 × 25 mm, the net receiving rigidity becomes too low, and even if it is applied to the processing chamber. However, this is because the sorting function can hardly be exhibited.

The handling chamber receiving net 11 as described above can be integrally formed with a desired size by one molding, but in the case where it cannot be integrally formed due to molding equipment or other reasons. , It can also be composed of a plurality of unit units. In this case, each of them can be mounted, for example, in the same manner as described in the conventional example.
Can be fixed to the outward flange 4a and the support rail 4b. Here, when the handling chamber receiving net 11 is integrally formed, it can be fixed only to the flange 4a of the mounting frame 4 through the mounting plate 5, and other than the flange 4a. It can also be fixed to the support rail 4b.

Here, as shown in FIG. 2, the tops of the bars 12a, 12b that partition the sieve 13 are formed so that their cross-sectional shapes are upward convex curves, and the bars 12a, 12b are formed. By reducing the contact area between the 12b and the straw waste or the like, 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 shape of the crosspieces 12a, 12b is circular, as long as the required opening ratio of the sieve 13 can be secured and sufficient rigidity can be imparted to the handling chamber receiving net 11. The same applies to the case.

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.

Further, here, the aperture ratio of the sieve 13 is set to 40.
To 75%, the size of the sieve is 8 × 8 to 25 × 25 mm, and the thickness of the handling room receiving net 11 is 3 to 10 mm,
As described above, it is possible to increase the grain leakage efficiency without lowering the rigidity and durability of the receiving net 11 and to exert a sufficient sorting function with excellent leakage efficiency. And, it is possible to secure an appropriate interval necessary for shedding, selection, etc., between the tooth and the treated tooth without lowering the rigidity of the receiving net.

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 this 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
The height of a can be made higher than that of the other crosspiece 12b.

[0025]

[0026]

COMPARATIVE EXAMPLE A comparative test on clogging of sieves between 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. 11 will be described below.

-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 showing another embodiment of the present invention, in which a plurality of unit units for receiving nets are arranged in the circumferential direction or axial direction of the handling cylinder, in the circumferential direction in the figure. By connecting them to each other, a single handling room receiving net is constructed.

Here, the illustrated unit unit 21 extending long in the axial direction of the handling cylinder has a sieve 23 defined by a crosspiece 22b extending in the width direction and a crosspiece 22b extending in the lengthwise direction. In order to attach to the outward flange 4a of the attachment frame 4, each attachment portion 24 provided at both ends in the length direction, and to attach it to the support bar 4b,
And a mounting portion 25 provided at an intermediate portion in the length direction thereof, and each of these mounting portions 24 made of a plate-shaped flat portion,
The reference numeral 25 has a plurality of through holes 24a and 25a, respectively, which allow the insertion of screws.

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 can be effectively prevented, and the entire unit unit 21 can be attached to the peripheral surface of the handling cylinder 1 in the width direction thereof as shown in the bb cross-sectional view. By bending along the unit, the mounting accuracy of the unit units 21 and, by extension, the handling room receiving net is improved, and the clearance between each unit unit 21 and the handling barrel 1 is made sufficiently uniform. Effectively prevents uneven wear of
At the same time, variations due to the position of the net, such as shredding performance and sorting performance, are 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 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 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, by directly screwing the receiving net to the mounting frame 4, the receiving net can be attached and detached extremely easily as compared with the prior art, and the receiving net is In the case of local damage, replacing only the damaged unit unit can facilitate repair work and reduce repair cost.

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 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.

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.

FIG. 10 is a diagram showing another example of the unit unit. The unit unit 21 shown here is provided with
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, even if the mounting portions 24 and 25 shown in FIG. 4 are omitted from the unit unit 21, it is possible to mount them sufficiently firmly.

The upward flange 30 in this example may 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 over the entire length thereof. It can also be provided.

The present invention has been described above based on the illustrated example. However, in the illustrated example, the receiving net which is constituted by the crosspiece having an integral structure can also be constituted by the crosspiece having the woven net structure. In addition, durability can be sufficiently improved and clogging can be effectively prevented.

[0046]

Therefore, according to the present invention, by partitioning the sieve of the net with the ultrahigh molecular weight polyethylene, the durability can be remarkably improved as compared with the prior art, and the sieve has Since it is possible to prevent the clogging of the extremely effectively, the work man-hours for replacing and cleaning the receiving net are sufficiently reduced, and at the same time,
The threshing performance will be maintained for a long time, and the occurrence of broken rice will be sufficiently suppressed. In addition, here, by setting the opening ratio of the sieve to 40 to 75%, it is possible to increase the leakage efficiency of the grain without lowering the durability of the net, and also to achieve the required net rigidity sufficiently. It is possible to sufficiently prevent the fluctuation of the shedding performance, the sorting performance, etc. due to the uneven wear of the net and the position of the net due to the change in the clearance between the net and the handling cylinder. And the sieve size is 8
By setting the thickness to 8 to 25 × 25 mm, it is possible to bring about an excellent leakage efficiency of the grain and also to exert a sufficient sorting function under a sufficient net receiving rigidity. Furthermore, by setting the thickness of the receiving net to 3 to 10 mm, shedding of particles between the tooth and the treated tooth can be performed without lowering the rigidity of the receiving net.
It is possible to secure the interval required for sorting and the like, and in addition, it is possible to effectively prevent the attachment of straw chips and the like to the side wall surface of the crosspiece.

[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 showing still another embodiment of the present invention.

FIG. 5 is a cross-sectional view showing a female side engaging portion.

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 Handling room receiving net 12a, 12b, 22a, 22b Crosspiece 13, 23 Sieve 14 Reinforcing core

Claims (1)

(57) [Claims] 1. A handling room receiving net, which is disposed below the handling barrel of the threshing apparatus and along which the sieve of the handling room receiving net is divided by ultra-high molecular weight polyethylene, The threshing unit net for the threshing machine has a sieve opening ratio of 40 to 75%, a sieve size of 8 x 8 to 25 x 25 mm, and a handling chamber net thickness of 3 to 10 mm.