JPH0249512A - threshing equipment - Google Patents

Abstract

(57) [Summary] This bulletin contains application data before electronic filing, so abstract data is not recorded.

Description

DETAILED DESCRIPTION OF THE INVENTION [Field of Industrial Application] The present invention relates to a threshing device, and more particularly to a technique for improving the leakage performance of a receiving net disposed along the circumferential direction of a handling drum.

[Conventional technology]

Conventionally, as a technique for increasing the concentration of the receiving net, by manufacturing the receiving net with resin material, it is possible to suppress the adhesion of processed materials to the receiving net, and even when wet grain culms are supplied, There are products that make clogging less likely to occur (for example, Japanese Patent Application Laid-open No. 6
3-49017).

[Problem to be solved by the invention]

In addition, even in such threshing devices in which the receiving net is made of a resin material, devices that vibrate the receiving net are being developed in order to further improve the leakage performance.

In other words, in a threshing device that vibrates a receiving net, by forcibly vibrating the receiving net, for example, even when processing a husk containing a lot of water, the vibration can reduce moisture adhering to the receiving net and maintain straw. It is designed to prevent clogging caused by the growth of straw fibers on the receiving net by scattering it with force.

Furthermore, according to experiments conducted by the applicant after manufacturing a threshing device with a structure in which the receiving net is vibrated in this manner, the higher the frequency of vibration per unit time and the larger the vibration stroke, the larger the mesh of the receiving net. It has been confirmed that it increases the clogging prevention effect.

However, when vibrating the receiving net, if the frequency and vibration stroke are set to extremely large values as described above, the grains or other material in the handling chamber may simply come into contact with the receiving net.
As a result of being thrown up by the vibration force of the receiving net, a phenomenon occurs in which leakage to the receiving net is prevented.

In other words, if the frequency and vibration stroke of the receiving net are set to extremely large values, clogging of the receiving net will be suppressed, but the leakage performance of the receiving net will be adversely affected.

The purpose of the present invention is, firstly, to maintain the leakage performance of the receiving net at a high value while suppressing clogging by rationally modifying the resin receiving net and appropriately setting the vibration stroke. Second, by appropriately setting the vibration frequency, the threshing device can suppress clogging of the resin receiving net while maintaining the leakage performance of the receiving net at a high value. be.

[Myanmar's means of solving problems]

A feature of the present invention is that the receiving net arranged along the rotation locus of the handling cylinder is made of a highly abrasion-resistant and highly water-repellent resin material, and the lattice member that forms the opening of the receiving net is placed on the handling cylinder side. is integrally formed with a convex curved surface and a flat surface on the ash removal drum side, and is equipped with a forced vibration mechanism that forcibly vibrates the receiving net in a reciprocating manner along the circumferential direction of the handling drum. The stroke is set to approximately 2.3 times the opening width of the receiving net in the direction along the circumferential direction of the handling cylinder, and the reciprocating frequency of the forced vibration mechanism is set to approximately 500 times per minute. There is a certain point, and its effect,
And the effects are as follows.

[For production]

In other words, if the cross-sectional shapes of the lattice members (24) and (25) of the receiving net (N) are configured as shown in FIGS. 2 and 3, the lattice members (24) and (25) will have convex curved surfaces (T) and Since the lattice member (2) is formed with a flat surface, moisture from the grain culm is
Even when moving to 4) and (25), the moisture on the protruding curved surface (T) does not stay and flows toward the ash removal drum, and the moisture on the flat surface (U) and the side surfaces (V) of the lattice members (24) and (25) After concentrating on the edge part formed by the water droplets and turning into water droplets, the grid member (24)
, separates from (25) and falls.

Furthermore, as shown in FIG. 2, the second opening width (W
The receiving net (N) with a vibration stroke (S) approximately 2.3 times that of 2).
Since the forced vibration mechanism (A) is provided to force the reciprocating vibration of
4), (25) The phenomenon of scattering due to contact with is suppressed to a relatively low level, and furthermore, the occurrence of clogging is not promoted.

The value of this vibration stroke (S) is based on the best value among the results of experiments conducted by the applicant, and the reason why the scattering of processed materials such as grains is suppressed in this way is as follows. ,
When the receiving net (N) is vibrated back and forth, the velocity distribution of the receiving net (N) based on time appears as a sin curve, so the receiving net (N) near the end of the vibration stroke
The moving speed of is low, and the vibration stroke is set such that the receiving net (N) reaches its maximum speed at a half stroke, that is, at a position where it has moved by the opening width (W2), so the vibration frequency is equal to that of the present invention. The lattice member (24) of the receiving net (N).

An example of this is that the probability of contact between (25) and the processed material can be lowered.

Also, according to experiments conducted by the applicant, forced vibration mechanism (A)
By setting the reciprocating frequency of approximately 500 times per minute, the processed materials such as grains are transported to the grid member (24) of the receiving net (N),
(25) The phenomenon of scattering due to contact with is further suppressed than described above, and the occurrence of clogging is not promoted.

〔Effect of the invention〕

Therefore, by modifying the shape of the lattice member of the resin receiving net and setting the vibration stroke, a threshing device can be constructed that can maintain the leakage performance of the receiving net at a high value while suppressing clogging. Moreover, by setting the vibration stroke, a threshing device has been constructed that suppresses clogging to an even greater extent and maintains a high value of thickening performance.

〔Example〕

Embodiments of the present invention will be described below based on the drawings.

Figure 9 shows a threshing device mounted on a combine harvester. The cylinder (2) is stored therein, and a receiving net (N) curved along the circumferential direction of the handling cylinder (2) is arranged at the lower part of the handling chamber (R), and a receiving net (N) is placed below the receiving net (N). A swinging sorting mechanism (3) that sorts the materials to be processed from the net (N) and a winnower (4) that supplies sorting air are arranged, and further below the swinging sorting mechanism (3) there is a swinging sorting mechanism a No. 1 screw (5) for collecting concentrated grains through the grain sieve (3a) of the mechanism (3);
No. 2 screw (6) that collects processed material containing grains
is placed on the coaxial core of this No. 2 screw (6).
A processing mechanism (7) that promotes the single graining of the processed material from the number screw (6) is provided, and a conveying screw (8) that sends the reprocessed material from this processing mechanism (7) to the oscillating sorting mechanism (3).
), and is also provided with a drive mechanism (9) that applies a swinging force to the swinging sorting mechanism (3), and a dust exhaust fan (10) that sucks and discharges dust inside the device. .

As shown in FIGS. 1 and 4, the receiving net (N) is manufactured by integrally molding an ultra-high molecular weight polyethylene material with excellent wear resistance and water-holding properties, and is also made of a forced vibration mechanism (A). It is configured to force reciprocating vibration along the circumferential direction of the handling cylinder (2).

As shown in FIGS. 5 to 9, the forced vibration mechanism (A)
An outlet provided on the drive shaft (2a) of the handling cylinder (2)! J
The power from (11) is an endless bell) (12), enter the turnip! An input shaft (14) that is transmitted through the input shaft (13) and two eccentric members (15) that are externally fitted on this human power shaft (14).
).

(15) and the play 1- connected to the eccentric member (15).
(16) A swinging arm (
The swinging arm (17) is swingably supported on the wall of the threshing device via the support shaft (18) on the base end side, and the engagement piece (19) on the swinging end side. Receive network via (
The roller (21) provided on the support frame (20) of
).

Note that the support frame (20) of the receiving net (N) is provided with a large number of wheels (22), and these wheels (22) are connected to the rail plate (23) provided on the inner wall of the threshing device. By being guided by the receiving net (
N) is forced to reciprocate along the circumferential direction of the handling cylinder (2),
In addition, in this forced vibration mechanism (A), the rotation speed of the human power shaft (14) is set to 500 revolutions per minute, and the vibration stroke (
As shown in Fig. 1, S) is set to 2.3 times the second opening width (W2) of the receiving net (N), which will be described later.
This is to prevent clogging.

As shown in Figs. 1 and 4, the receiving net (N) has a filter section (
The filtration part (Na) and the frame part (Nb) are integrally formed.
Na) is a large number of vertical lattice members (24) formed along the rotational direction of the handling cylinder (2), and the rotation axis (2) of the handling cylinder (2).
A large number of horizontal lattice members (25) formed along P)...
and furthermore, this receiver m (N>, as shown in FIG. The filtration part (Na
) is 1/4 of the total width of the receiving net (N) from the upper side in the direction of grain culm conveyance by the feed chain (1) as shown in Figure 5.
It is designed to increase the bending effect of the processed material up to the receiving net and promote the formation of single grains of the processed material.

Also, the width (D25) of the horizontal lattice member (25) is the same as that of the vertical lattice member (
24) is made larger than the width (D24) of each grid member to equalize the wear of each grid member, and as shown in FIGS. 3 and 4, each grid member (24), (25), and・
The side of the handling barrel is a convex curved surface (T), and the side of the ash removal barrel is a flat surface (U).
), even if moisture from the culm is transferred to the convex curved surface (T), this moisture will be transferred to the lattice members (24)... (25).
)... flows toward the ash removal drum along the side surface (V), and separates and falls into water droplets at the edge formed by the side surface (V) and the flat surface (II).

In addition, this receiving net (N) is fastened to the support frame (20) with a large number of screws (26), and
As shown in Fig. 5, a fitting recess (Nc) into which the bow metal (27) is fitted and supported is formed on the side of the handling barrel, and the bow metal (27)
The fitting piece (27a) is fitted into the fitting recess (Nc) and secured with a screw (26) in a stable state.

Incidentally, in this threshing device, as shown in FIG. 5, two receiving nets (N) are connected to a support frame (20).

[Another example]

In addition to the embodiments described above, the present invention can be used without attaching the receiving net to the support frame, and when used in this way, as shown in Fig. 10, the receiving net (N ) to the rail plate (30).

(30), it is also possible to configure it without using a wheel.

Further, the present invention can be implemented by setting the opening width of the receiving net uniformly, and it is also possible to configure the forced vibration mechanism using an electric motor.

Incidentally, although reference numerals are written in the claims section for convenient comparison with the drawings, the present invention is not limited to the structure shown in the accompanying drawings.

[Brief explanation of the drawing]

The drawings show an embodiment of the threshing device according to the present invention, FIG. 1 is a perspective view of a part of the receiving net, FIG. 2 is a sectional view taken along the line ■-■ in FIG. 1, and FIG. ■-■ line sectional view, Figure 4 is a partially cutaway plan view of the receiving net, Figure 5 is an exploded perspective view showing the receiving net, bow metal, and support frame, and Figure 6 is the threshing device showing the forced vibration mechanism. 7 is a cross-sectional view showing the connection between the forced vibration mechanism and the receiving net, and FIG. 8 is a cross-sectional view showing the wheels, rail plates, etc.
FIG. 9 is an overall side view of the threshing device, and FIG. 10 is a sectional view showing another embodiment of the receiving net. (2)... Handling cylinder, (24), (25)...
... Lattice member, (A>... Forced vibration mechanism, (
N)...Receiver net, (S)...Vibration stroke, (T>...Protruded surface, (U)...
Flat surface, (W2)...Opening width.

Claims (1)

[Claims] 1. A receiving net (N
) are made of highly abrasion-resistant and highly water-repellent resin material, and lattice members (24) and (25) that form the openings of the receiving net (N).
The handling cylinder side is set as a convex curved surface (T) and the opposite handling cylinder side is set as a flat surface (U), and the receiving net (N) is integrated with the handling cylinder (2).
A forced vibration mechanism (A
) is provided, and the vibration stroke (S) of the receiving net (N) by the forced vibration mechanism (A) is determined by the abbreviation of the opening width (W_2) of the receiving net (N) in the direction along the circumferential direction of the handling cylinder (2). A threshing device set at 2.3 times. 2. The reciprocating frequency of the forced vibration mechanism (A) is approximately 50 per minute.
The threshing device according to claim 1, wherein the threshing device is set to 0 times.