JP2018099077A - Rocking selector - Google Patents

Abstract

PROBLEM TO BE SOLVED: To downsize a rocking selector by reducing a space below a sieve case by shortening a gap between a coupling shaft and a bottom face of the sieve case.SOLUTION: A sieve case driver 3 comprises: a rocking arm 32 supported by a side plate; a coupling shaft 33 having both lateral ends pivotally supported by the rocking arm 32; a crank shaft 30 rotatably supported by the side plate; and an interlocking link 34 interlockingly coupling the crank shaft 30 and the coupling shaft 33. To a rear part of a sieve case 20, a connection bracket 27 for coupling with respect to the coupling shaft 33 is fixed. To the coupling shaft 33, a fitting member 35 for coupling with respect to the connection bracket 27 is fitted. The connection bracket 27 is coupled to the fitting member 35 at a position at which the connection bracket overlaps with the coupling shaft 33 in a side view.SELECTED DRAWING: Figure 2

Description

  The present invention relates to a swing sorting device including a sheave case and a sheave case drive device that swings the sheave case.

  As a swing sorting device for a threshing device, a sheave case drive device for driving a sheave case connects a free end portion of a swing arm supported by a left and right side plate so as to swing back and forth with a connecting shaft, There is known a structure in which a sheave case is connected via a pivoted mounting member, and a crankshaft rotatably supported on a side plate and a swing arm are interlocked and connected by an interlocking link (see Patent Document 1). .

JP-A-8-191624 (see paragraph “0015” and FIGS. 1 and 2)

In the swing sorting device disclosed in Patent Document 1, as a connecting structure between the connecting shaft and the sheave case, an attachment member pivotally supported on the connecting shaft side is connected to a connecting bracket that protrudes downward from the bottom surface side of the sheave case. Is applied from below and bolted in the vertical direction.
This structure inevitably requires a space between the connecting shaft and the bottom surface of the sheave case so that both the connection bracket and the mounting member are opposite to each other. There is room for improvement in that the distance from the bottom of the sheave case tends to be relatively large.

  The present invention intends to reduce the size of the swing sorting device by shortening the distance between the connecting shaft and the bottom surface of the sheave case to reduce the space below the sheave case.

  The swing sorting device according to the present invention includes a sheave case and a sheave case drive device that swings the sheave case. The sheave case drive device is supported by side plates on both the left and right sides of the threshing device. A swing arm configured to be swingable back and forth, a connecting shaft pivotally supported at both left and right ends on the free end side of the swing arm, and rotatably supported by the side plates on both the left and right sides, and power A crankshaft to which power of a power source is input, and an interlocking link for interlockingly connecting the crankshaft and the connecting shaft, and a connection bracket for connecting to the connecting shaft is fixed to the rear portion of the sheave case; An attachment member for connection to the connection bracket is attached to the connection shaft, and the connection bracket is connected to the attachment member at a position overlapping the connection shaft in a side view. There to that point.

According to the present invention, the connection bracket is coupled to the attachment member at a position overlapping the coupling shaft in a side view.
Therefore, it is not necessary to form a space between the bottom surface of the sheave case and the connecting shaft so that both the connection bracket and the mounting member overlap in the vertical direction. As a result, the distance between the bottom surface of the sheave case and the connecting shaft can be reduced, and there is an advantage that the swing sorting device can be miniaturized.

  In the present invention, it is preferable that the interlocking link and the swing arm are coupled to the coupling shaft at a location closer to the center of the coupling shaft than the location of the connection bracket.

According to the present invention, the interlocking link and the swinging arm are disposed at a position closer to the center side of the connecting shaft that does not interfere with the connection bracket. That is, by positioning the interlocking link and the swinging arm closer to the center side of the connecting shaft than the location where the connection bracket is present, the interlocking link and swinging arm can be overlapped with the connection bracket in a side view. .
Therefore, it is possible to avoid the interference of the interlocking link and the swing arm with respect to the connection bracket, and to perform a more compact arrangement, and it is easy to attach and detach the connection bracket located outside.

  In the present invention, it is preferable that the attachment member and the connection bracket are coupled in a direction along the axial direction of the coupling shaft.

  According to the present invention, since the mounting member and the connection bracket are coupled in a direction along the axial direction of the coupling shaft, the mounting member and the connection bracket are necessarily positioned so as to overlap in a side view. Since the connection bracket does not need to be positioned between the bottom surface of the sheave case and the connecting shaft, the swing sorting device can be further downsized.

  In the present invention, it is preferable that the interlock link is formed by connecting a bearing holder that is externally fitted to the crankshaft and a bearing holder that is externally fitted to the connecting shaft.

  According to the present invention, since the coupling body of the bearing holder that is externally fitted to the crankshaft and the bearing holder that is externally fitted to the coupling shaft is used as the interlocking link, the length of the interlocking link is also set to the minimum necessary length. As a result, the size of the swing sorting device can be further reduced.

It is sectional drawing in the up-down direction which shows a threshing apparatus and follows the front-back direction. It is a partially cutaway side view in the up-down direction showing a part of the sheave case and the sheave case driving device. It is a partially cutaway sectional view in plan view showing the sheave case driving device. It is a disassembled perspective view which shows a sheave case drive device. It is a threshing apparatus, and is an up-down direction sectional view along the left-right direction. It is a top view which shows a part of concave. It is an expanded sectional view in the VII-VII line location of FIG.

Hereinafter, an example of an embodiment of the present invention will be described based on the drawings.
In the description of the present embodiment, the front-rear direction and the left-right direction are described as follows unless otherwise specified. In other words, the forward traveling direction (see arrow F in FIG. 1) of the corn harvester to which the present invention is applied is “front”, and the backward traveling direction (see arrow B in FIG. 1) is “rear”. ”, The direction corresponding to the right side (see arrow R in FIG. 3) based on the forward-facing posture in the front-rear direction is“ right ”, and the direction corresponding to the left side (see arrow L in FIG. 3) is also“ left ”. It is.

[Composition of corn harvester]
FIG. 1 shows a threshing device 1 for a corn harvester to which a swing sorting device 2 according to the present invention is applied.
The corn harvesting machine according to the present invention harvests a crop portion (bundle) that has been bunched into a bunched portion by mulling many seeds existing around the cob at the time of corn harvesting, and further threshing it. It collects crop grains that have been shattered from the cob.
This corn harvester is provided with a traveling device (not shown), and the corn crop bunch collected by a pretreatment device (not shown) is put into the threshing device 1 for threshing, processed into granules, and stored in a storage tank (not shown). Is configured to do.

  The threshing apparatus 1 includes a threshing part case 10 in which a handling chamber 1A is formed, and an axial-flow type handling cylinder 11 that is rotationally driven around a longitudinal axis z1 in the threshing part case 10. I have. The crop to be processed is conveyed and supplied from the feed conveyor 12 to the front part of the handling chamber 1A in which the handling cylinder 11 is installed, and the supplied crop is transferred rearward while threshing with the tooth handling 11a of the handling cylinder 11.

In the handling chamber 1A, the crop after the threshing process is temporarily received by the concave 13 provided in the lower portion of the handling cylinder 11, and the crop grains that have leaked through the concave 13 are subjected to the sorting action by the concave 13, and the swing sorting device. 2 is sent.
The cobs, leaf dust, etc. remaining on the concave 13 are fed backward along with the rotation of the handling cylinder 11, and are discharged from the rear of the handling chamber 1A to the outside of the machine.
Further, in the handling chamber 1A, there is provided a red pepper 14 for wind-selecting a crop that has passed through the concave 13 and supplied to the swing sorting device 2.

As shown in FIGS. 5 to 7, the concave 13 is a combination of a plate-like vertical beam member 13 a along the axial direction of the handling cylinder 11 and a bar-like horizontal beam member 13 b along the rotation direction of the handling cylinder 11 in a lattice shape. Configured.
In this structure, the vertical beam member 13 a is in a state along a direction orthogonal to the rotation direction of the handling cylinder 11. For this reason, in the thing of this invention, the part equivalent to the rotation direction upper end side of the handling cylinder 11 in the edge in the radial direction near the handling cylinder 11 among the vertical beam members 13a is shown in FIG. The inclined surface 13c having a large distance from the rotation center of the handling cylinder 11 is formed on the upper side in the rotational direction.
This can reduce the possibility that the sharp corners of the vertical beam member 13a come into contact with the crop grain when threshing a relatively soft crop such as when corn is harvested. As a result, damage to crop grains can be easily reduced.

[Oscillating sorter]
The swing sorting device 2 includes a sheave case 20 and a sheave case drive device 3 that swings the sheave case 20.
The sheave case 20 is provided with a chaff sheave 21, a sieve wire 22, a grain sheave 23, and the like that catch crop grains that have leaked through the concave 13. The sheave case 20 is subjected to a swinging operation by the sheave case driving device 3, and the crop grains on the sheave case 20 are subjected to a wind selection operation by the sorting wind supplied from the Karatsu 14 along with the swinging operation. Become.

  As a device for swinging the sheave case 20, as shown in FIG. 1, a front guide device 24 provided at the front portion of the sheave case 20, a sheave case driving device 3 provided at the rear portion of the sheave case 20, There is.

  The front guide device 24 includes a guide roller 25 provided in the front portion of the sheave case 20 and a guide rail 26 in a slightly lowering posture provided in the lateral side wall portion of the threshing device 1. Then, by swinging the sheave case back and forth while guiding the guide roller 25 to the guide rail 26, the front portion of the sheave case 20 slides within a predetermined range extending obliquely forward and downward and obliquely upward and backward in the longitudinal direction. It is configured as follows.

The sheave case driving device 3 provided at the rear portion of the sheave case 20 is configured as follows.
As shown in FIGS. 1 to 4, a crankshaft 30 having an eccentric shaft portion is provided so as to be rotatable around a rotation axis x <b> 1 in the left-right direction across the left and right side plates 10 </ b> L, 10 </ b> R in the threshing device 1. One end of the crankshaft 30 protrudes to the outside of the threshing part case 10, and an input pulley 15 for introducing external power from a power source such as an engine (not shown) is attached to the protruding shaft end. ing.
Further, the left and right side plates 10L and 10R are swung freely back and forth around a support shaft 31 having a left and right swing axis x2 at a position rearward of the place where the crankshaft 30 is provided. An arm 32 is provided. The left and right ends of the connecting shaft 33 are pivotally supported on the free end side of the swing arm 32.

The crankshaft 30 and the connecting shaft 33 are interlocked and connected by an interlocking link 34. In the interlocking link 34, a bearing holder 34A that is externally fitted to an eccentric shaft portion of the crankshaft 30 and a bearing holder 34B that is externally fitted to the connecting shaft 33 are connected to each other by a connecting bolt 34C. In this manner, the entire length of the interlocking link 34 is shortened as much as possible by connecting the bearing holders 34A and 34B to each other.
The interlocking link 34 is formed with a convex portion 34a and a concave portion 34b as shown in FIGS. 2 and 4 at the joint surface portion between the bearing holders 34A and 34B. That is, by forming the convex portion 34a on one side of the joining surface portion and engaging the concave portion 34b on the other side, an external force in a direction orthogonal to the coupling direction does not act directly on the coupling bolt 34C. It is configured. This prevents a large shearing force from acting on the connecting bolt 34C.

  A swing arm 32 and an interlocking link 34 are connected to the connecting shaft 33 at both left and right ends so as to be relatively rotatable. A sheave case is located closer to the shaft end than the swinging arm 32 and the interlocking link 34. A mounting member 35 to be connected to the connection bracket 27 on the 20 side is integrally mounted. That is, the interlocking link 34 and the swing arm 32 are connected to the connection shaft 33 so as to be relatively rotatable at a location closer to the center of the connection shaft 33 than the location where the connection bracket 27 is present and the location where the attachment member 35 is present. Yes.

As shown in FIGS. 2 and 3, the connection bracket 27 of the sheave case 20 is fixed not to the bottom surface 20B side but to the left side surface 20L and the right side surface 20R. It extends obliquely downward.
The attachment member 35 attached to the coupling shaft 33 with respect to the connection bracket 27 extending from the sheave case 20 has an outer end portion on the inward surface 27a of the connection bracket 27, that is, the inner side of the sheave case 20. In a state where the mounting surface 35a is applied to the surface toward the surface, the connecting bolt 35b is connected from the direction corresponding to the lateral outer side of the sheave case 20.

  At this time, as shown in FIG. 2, the connected connection bracket 27 and the attachment member 35 have their mutual attachment positions set so that the connection bracket 27 overlaps the connection shaft 33 in a side view. Yes. In this case, the attachment member 35 is disposed along the axial direction of the connection shaft 33 with respect to the connection bracket 27, and the connection bracket 27 and the attachment member 35 are arranged side by side so that they can be connected in the lateral direction. By doing so, the connection bracket 27 and the connecting shaft 33 can be overlapped in a side view.

As shown in FIGS. 3 and 4, the support shafts 31 of the left and right swing arms 32 that support the connecting shaft 33 are attached to the left and right side plates 10 </ b> L and 10 </ b> R of the threshing apparatus 1 via the mounting base 36. ing.
The mounting pedestal 36 is a shaft side pedestal portion 37 integrally provided with a support shaft 31 screwed to the tip end side of the conical cylindrical portion 37A and a bearing mounting portion 37B of the crankshaft 30, and the shaft side pedestal portion 37. A connection hole 38a for fixed connection and a mounting plate portion 38 integrally including a connection hole 38b for fixed connection to the left and right side plates 10L, 10R are provided.

  As described above, since the support shaft 31 and the bearing mounting portion 37B are integrally provided in the shaft side pedestal portion 37, the inter-axis distance between the position of the support shaft 31 and the position of the crankshaft 30 is maintained with high accuracy. The attaching plate 36 can be easily attached to and detached from the left and right side plates 10L and 10R using the attaching plate portion 38.

[Another embodiment]
(1) In the above-described embodiment, the interlock link 34 and the swing arm 32 are connected to the connection shaft 33 at a position closer to the center side in the axial direction of the connection shaft 33 than the position where the connection bracket 27 is present. Although the thing was illustrated, it is not restricted to this structure.
For example, either one or both of the interlocking link 34 and the swing arm 32 is positioned closer to the shaft end side in the axial direction of the coupling shaft 33 than the location where the connection bracket 27 is present, and coupled to the coupling shaft 33. It may have a structure.
Other configurations may be the same as those in the above-described embodiment.

(2) In the above-described embodiment, the attachment member 35 and the connection bracket 27 are illustrated as being connected in the direction along the axial direction of the connection shaft 33. However, the present invention is not necessarily limited to this structure.
For example, although not shown, each of the attachment member 35 and the connection bracket 27 is provided with a facing surface that partially opposes in the front-rear direction, and is connected in the front-rear direction with the facing surfaces in contact with each other. A structure in which a bolt is used and the bolt is connected may be used.
Other configurations may be the same as those in the above-described embodiment.

(3) In the above-described embodiment, as the interlocking link 34, a structure in which the bearing holder 34A that is externally fitted to the eccentric shaft portion of the crankshaft 30 and the bearing holder 34B that is externally fitted to the connecting shaft 33 are directly connected. However, the present invention is not limited to this structure.
For example, a link member having a predetermined length may be used in accordance with the inter-axis distance between the crankshaft 30 and the connecting shaft 33, and the bearing links 34A and 34B may be separately provided on the link member to form the interlocking link 34. .
Other configurations may be the same as those in the above-described embodiment.

  INDUSTRIAL APPLICABILITY The present invention can be used for a swing sorting device for a combine harvester for harvesting rice, wheat, beans, florets and the like, and a swing sorting device for a stationary threshing machine, in addition to a swing sorting device for a corn harvester.

3 Drive device 10L, 10R Side plate 20 Sheave case 27 Connection bracket 30 Crankshaft 32 Oscillating arm 33 Connecting shaft 34 Interlocking link 34A Bearing holder 34B Bearing holder 35 Mounting member

Claims (4)

A sheave case, and a sheave case drive device that swings the sheave case,
In the sheave case drive device,
A swing arm that is supported by the left and right side plates in the threshing device and configured to swing back and forth,
A connecting shaft pivotally supported at both left and right ends on the free end side of the swing arm;
A crankshaft rotatably supported on the left and right side plates;
An interlocking link for interlockingly connecting the crankshaft and the connecting shaft;
A connection bracket for connection to the connection shaft is fixed to the rear portion of the sheave case,
An attachment member for connection to the connection bracket is attached to the connection shaft so as to be relatively rotatable,
A swing sorting device in which the connection bracket is coupled to the mounting member at a position overlapping the coupling shaft in a side view.   2. The swing sorting device according to claim 1, wherein the interlocking link and the swing arm are connected to the connection shaft at a location closer to the center of the connection shaft than a location where the connection bracket is present.   3. The swing sorting device according to claim 1, wherein the attachment member is provided at a shaft end portion of the connection shaft, and the attachment member and the connection bracket are connected in a direction along an axial direction of the connection shaft. The swing selection according to any one of claims 1 to 3, wherein the interlocking link is formed by connecting a bearing holder that is externally fitted to the crankshaft and a bearing holder that is externally fitted to the connecting shaft. apparatus.

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