JP2000287529A - Structure for supporting feed chain of thresher - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a structure for supporting a feed chain of a thresher capable of smoothly keeping the feed chain in a maintenance posture without greatly laterally protruding the feed chain from a conveying posture. SOLUTION: This structure for supporting a feed chain 3 of a thresher is obtained by installing a nipping rail 3a on the side of a frame unit 23 of a top board along a threshing port 21 of a threshing chamber 2, arranging the feed chain 3 on the side of a lower wall 1a and supporting the feed chain 3 of the thresher for nipping and conveying grain culms so that the feed chain 3 can be taken out from a conveying posture through plural front and rear supporting members 60 and 61 to the lateral side and then tilted and rotated to the lateral side with the lower side as a fulcrum.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a feed chain support structure for a threshing machine capable of switching a feed chain of the threshing machine between a transport position and a maintenance position.

[0002]

2. Description of the Related Art Conventionally, a threshing machine mounted on a combine is, for example, as disclosed in Japanese Utility Model Publication No. Sho 62-28840, for removing clogged grain stalks and clogging in a handling room, and further for cleaning or repairing. The maintenance work is performed by rotating the feed chain sideways.

[0003]

However, in the threshing machine disclosed in the above-mentioned publication, the feed chain is simply rotated laterally about a support shaft provided separately below the feed chain. The radius of rotation of the chain increases, and the amount of protrusion from the machine side to the outside increases. As a result, there is a disadvantage that maintenance work is difficult to perform. In addition, when the feed chain is turned back and turned to the transport position, the alignment of the drive sprocket of the feed chain and the drive shaft becomes complicated, so a special joint structure for adjusting the misalignment is required. However, there are problems such as a complicated structure and high cost.

[0004]

The feed chain support structure of the threshing machine of the present invention for achieving the above object is constituted as follows.

First, a holding rail 39 is provided on the side of the top plate frame 23 along the opening 21 of the handling chamber 2 and the lower side wall 1 is provided.
In a threshing machine in which a feed chain 3 is provided on the side a to pinch and transport the grain culm, the feed chain is pulled out laterally from the transport position via a plurality of front and rear support members 60 and 61, and then the lower side is used as a fulcrum. It is characterized by being supported so as to be tiltable and rotatable.

Second, the present invention is characterized in that the support members 60 and 61 are also used as handles for pulling out the feed chain 3. Thirdly, the support members 60 and 61 are formed by inwardly-shaped U-shaped rods in a side view, and the lower rod portion is made longer than that of the upper rod portion so as to be slidably supported on the lower wall 1a side. And

Fourth, the supporting members 60 and 61 are connected to the lower side wall 1a.
It is characterized in that it is supported by a support cylinder 62 composed of a rotation cylinder 66 rotatably supported by a rotary cylinder 66 and a slide cylinder 63 which intersects the rotation cylinder 66 at right angles and is integrally formed.

Fifth, the feed chain 3 is characterized in that a regulating means for regulating the tilting rotation is provided while the feed chain 3 is being pulled out. Sixth, the feed chain 3 is provided with a stay 6g for supporting a maintenance posture when the feed chain 3 rotates.

[0009]

Embodiments of the present invention will be described below with reference to the drawings.

Reference numeral 1 denotes a threshing machine which can be mounted on a combine or a harvester or the like. The threshing machine 2 has a handlebar 20 drivably supported from the front side of the machine body and a feed chain 3 stretched along a handling port 21. And a fourth funnel-shaped opening 4 connected to the culm opening of the handling chamber 2, and a threshing sorter integrally connected to the side wall 1a of the fourth opening 4 and protruding toward the side. The fan case 5 that performs airflow and dust removal is integrally configured.
Then, inside the airframe, threshing and the like that have leaked from the receiving net 22 of the handling room 2 are configured to be threshing and sorted by the swinging sorting body 87 and the sorting wind path.

The threshing machine 1 is, as shown in FIG.
A top plate frame 23 that forms the upper wall of the handling room 2 is provided so as to be openable and closable upward with the hinge mounting portion 23a on the back side (opposite to the handling opening) as a fulcrum, and a lower plate that forms the lower plate of the handling opening 21. Lip board 25
Is provided so as to be able to be connected to and separated from the receiving net 22 via a connecting portion 26 which can be engaged and disengaged, and is connected to a later-described chain guide 30 via a connecting portion 25a. By cooperating with the switching operation of the "maintenance posture", the upper and lower sides of the handling room 2 are widely opened to easily and easily perform maintenance work such as removal of clogs such as grain stalks and threshing and repair or cleaning of the inside. So they can do it.

The feed chain 3 is shown in FIGS.
5 from the “transport posture: closed state” shown by the solid line in FIG.
A switching support structure 6 that can easily switch the posture to the “maintenance posture: open state” indicated by a chain line in FIG. A rail base 3b in which the holding rail 3a opposed to the transport side) is attached and fixed to the top plate frame 23 side.
2 is supported in a suspended state via a plurality of resilient mechanisms 3c (FIG. 2), and both form an inclined conveyance path which becomes front-low and rear-high in the conveyance posture as shown in FIG. Feed chain 3 from the front to the back of the stalks fed through
While being held between the holding cylinder 3 and the holding rail 3a.
The threshing with 0 can be performed well.

The feed chain 3 is an L-shaped chain guide 30 provided along the rear side to support the back side of the conveying surface.
The floating sprockets 31 and 32 are pivotally supported before and after, and are wound around a driving sprocket 33 located below the rear floating sprocket 32, and the non-transport side is supported by a tension roller 70 supported via a chain tensioning mechanism 7. The rotation drive is smoothly performed by pressing.

The driving sprocket 33 is mounted on the rear wall 1b, the side wall 1a, and the side surface of the fan case 5 in a space 1c which is recessed in a plan view from the machine side by a mounting structure described later. The drive case 8 installed so as not to protrude from the drive chain ensures that the feed chain 3 is driven with a compact transmission structure, and that the feed case 3 can be easily switched to the maintenance position without hindering the drive case 8. I can do it.

Next, the feed chain switching support structure 6 will be described with reference to FIGS. 1, 3, 5, and 6. FIG. In the switching support structure 6, the support members 60 and 61 formed of U-shaped rods having different widths of the inward side sides and having different lengths of the inward side in a side view are vertically provided with the width of the handling chamber 2 before and after the chain guide 30. It is formed of a rod 6a, a vertical rod 6b, and a long rod 6c (FIGS. 5 and 6).
Vertical pipe (slide cylinder) 63 of support cylinder (switching support part) 62 mounted on bracket 10 (FIG. 1) projecting from both sides of
The long rod portion 6c is slidably fitted into the long rod portion 6c.

The slide cylinder 63 has a horizontal pipe (rotating cylinder) 66 rotatably fitted to a support shaft (fulcrum shaft) 65 transversely passing through the bracket 10 below the slide cylinder 63 so as to intersect at right angles. By integrally providing the switching support portion 62 having a cross shape in a plan view, the feed chain 3 can be switched and supported stably with a compact configuration.

The slide cylinder 63 is provided with a spring ball type temporary holding stopper 63a shown in FIG. 6 (B), and the ball 63b is engaged with a first locking hole 61a formed in the supporting members 60 and 61. Then, the feed chain 3 is stopped and maintained in the transport position, and when the feed chain 3 is engaged with the second locking hole 61b, the feed chain can be temporarily supported in the pull-out position shown by the chain line in FIG. I have to.

The support members 60 and 61 are provided with a flange-like stopper 6d at the inner end of the long rod portion 6c so as to be detachable, so that the maximum pull-out position for stopping the feed chain 3 at an appropriate position for rotating the feed chain 3 can be set. You have set. By connecting the stopper 6d and the side wall 1a with a spring (restriction means) 6e, a position (an appropriate rotation position) where the feed chain 3 moves when the feed chain 3 is being pulled out is regulated. Problems such as collision with other places due to accidental rotation of the chain 3 at an inappropriate position are prevented.

At the proper rotation position of the feed chain 3, the stopper 63a has a greater stopping force than the returning force of the spring 6e. In addition, the restricting means is not limited to the above-described method, and a stopper guide that disables rotation of the feed chain 3 during drawing may be provided from the side wall 1a.

Since the support members 60 and 61 both support the chain guide 30 with the U-shaped short rod portion 6a,
The feed chain 3 can be stably supported at a position close to the handle 21 and the long rod portion 6c can be
1 can be stably supported by the support tube 62 in a state of being inserted into the widely formed space below the lower part 1, so that the feed posture of the feed chain 3 and the pull-out rotation operation can be performed smoothly. . In addition, advantages such as the switching support structure 6 can be compactly installed on the side of the handling room 2 can be obtained.

The vertical rods 6b connecting the short rods 6a and the long rods 6c in the vertical direction (FIG. 5) are positioned vertically on both sides of the handling chamber 2 so as to be vertically elongated. There is also an advantage that the vertical rod portion 6b of 61 can be securely gripped with both hands, and the feed chain 3 can be easily pulled out and tilted and rotated efficiently.

The support members 60 and 61 are provided with a horizontal shaft 6f connecting the two in the middle of the vertical rod portion 6b (FIG. 1).
A stay 6g is rotatably supported on both sides of the horizontal shaft 6f, and the stay 6g is detachably supported by a suitable hook (fixing means) 6h made of a spring material provided on the vertical rod portion 6b. I have.

According to the above configuration, in the transport position in which the feed chain 3 is arranged on a predetermined path, as shown by a solid line in FIG. 5, the stay 6g is locked by the hook 6h and is parallel to the vertical rod portion 6b. Supported and stored compactly. When the feed chain 3 is pulled out to the maintenance position, the stay 6g is detached from the hook 6h, and the feed chain 3 is tilted downward and rotated.
Has an effect such that the feed chain 3 can be easily and stably supported in the maintenance posture in the hanging posture as indicated by the chain line.

Next, the chain tension mechanism 7 of the feed chain will be described with reference to FIG. The chain tensioning mechanism 7 pivotally supports an arm 72 having a tension roller 70 on a spindle 71 provided at the center of the chain guide 30 so as to be swingable, and urges the arm 72 in a tensioning direction via a tension spring 73. At the same time, it is possible to switch to the non-toning posture shown by the chain line via the tension lever 75.

When the feed chain 3 is switched from the transport position to the maintenance position by switching the tension roller 70 to the non-tensioning position by the tension lever 75, the feed chain 3 can be largely slackened. The feed chain 3 can be easily pulled out together with the chain guide 30 and the chain tensioning mechanism 7 and quickly moved outward to the maintenance posture as described above.

When the feed chain is returned to the transport position, the feed chain can be accurately positioned at the meshing position with the driving sprocket 33 by rotating the feed chain upward and pushing it back.
There is an advantage that the feed chain 3 can be easily again brought into the conveying posture by returning the tension roller 70 by performing the reverse operation.

The feed chain 3 is provided with a driving sprocket 33 at the lowermost portion on the non-transport side thereof so that the lower lip plate 25
(FIG. 5) is located at a space recessed inwardly below, and a support shaft 65 serving as a rotation fulcrum of the feed chain 3 is provided as close to the drive sprocket 33 as possible. I have. With this configuration, the feed chain 3 is not greatly protruded outward and the feed chain 3
Can be smoothly rotated without bringing the lowermost portion thereof into contact with the side wall 1a or the like, and can be brought into the maintenance posture, so that maintenance work without hindering the feed chain 3 can be performed satisfactorily. The feed chain 3 removed when returning from the maintenance position to the transport position is not greatly separated from the drive sprocket 33, so that the chain can be easily hooked onto the drive sprocket 33.

The feed chain 3 is located between the chain plates 3e on both sides of the drive sprocket 33 at a position close to the chain roller 3f between the chain plates 3e on both sides, from the rotating cylinder 66 on the support member 61 side. A chain receiver 9 made of a rod-shaped or plate-shaped body integrally extended is provided, and a chain run-out preventing body 90 for preventing the chain 3 from hanging down is provided on the chain roller 3f on the support member 60 side. The feed chain 3 is provided so as to be slidable so that the feed chain 3 can be smoothly rotated in the transport position, and the chain can be easily prevented from coming off due to loosening of the feed chain 3 in the maintenance position with a simple configuration.

That is, when the feed chain 3 is loosened by the chain tensioning mechanism 7 as described above, the driving sprocket 3
Since the chain portion deviated from 3 is supported by the chain receiver 9 in the immediate vicinity of the drive sprocket 33 without drastically dropping, the feed chain 3 can be easily pulled out and supported near the support shaft 65. There are advantages such as prevention of contact with other objects during rotation, easy positioning on the drive sprocket 33 when returning to the transport position, and accurate and efficient chain hanging operation.

Next, the transmission and mounting structure of the driving sprocket 33 will be described with reference to FIGS. As described above, the handling room 2, the side wall 1a, and the fan case 5
In the space 1c formed between the rear wall 1b and the fan case 5, the rear wall 1b of the handling chamber 2 and the fan case 5 are bent at a position where the drive case 8 is substantially flush with the outside of the side wall of the handling chamber 2 without protruding outside. The whole frame rigidity is improved by connecting the reinforced thick mounting plate 80 in the longitudinal direction and in the front-rear direction.

The drive case 8 (FIG. 4) has a drive shaft 8a having a drive sprocket 33 and a large gear 81 on the upper part, an input pre 82, and a small gear 83 meshing with the large gear 81.
The input case 85 having the drive case 8 is supported.
Of the drive case 8 and the mounting plate 80 are stably fixed by passing the input shaft 85 through the mounting hole formed in the mounting plate 80, and the input pulley 82 is connected to the side wall 1a by utilizing the space in the space 1c. It is arranged close to.

The input pulley 82 is transmitted via a belt from an appropriate output pulley located on the lower side, and the input pulley 82 in the illustrated example is swung by a swing drive cam 86 provided at its base. The moving sorter 87 can be smoothly driven by a simple configuration.

The threshing machine 1 configured as described above reduces the rotational power input from the input pulley 82 in the transport position of the feed chain 3 through the drive case 8 to rotate the drive sprocket 33. The feed chain 3 is rotatably driven at an appropriate tension by the chain tensioning mechanism 7, and after threshing the grain culm fed between the feed chain 3 and the clamping rail 3a and transporting the culm in the handling chamber 2 while transporting the culm, the feed chain 4
It can be discharged backward through the gate 4.

When the maintenance work on the feed chain 3 or the inside of the machine is to be performed, first, the top plate frame 23 is raised as shown in FIG. When the rail 3a can be detached from the feed chain 3, the feed chain 3 is pulled out by the above-described operation and then tilted and turned to the maintenance position as shown by a chain line in FIG. Lower lip board 25 with 3
(FIG. 5) can also be removed, so that the machine side and the side of the handling room 2 can be widely opened, and the feed chain 3 and the lower lip plate 25 can be deformed without greatly protruding outside the machine. Therefore, maintenance work can be easily performed. At this time, if it is not necessary to open the lower lip plate 25, only the feed chain 3 side can be set to the maintenance posture by disengaging the connecting tool 25a.

Further, when the maintenance work is completed, the feed chain and the lower lip plate 25 can be easily returned to the original transport position by returning to the transport position by raising the support shaft 65 through the rotary cylinder 66 and then pushing it back. And the threshing operation can be performed well again.

[0036]

As is clear from the above description, according to the feed chain support structure of the threshing machine of the present invention, the feed chain 3 can be stably supported in the transport position by the plurality of support members 60 and 61. . Then, in the maintenance posture, the feed chain 3 is pulled out to the side and tilted and turned to the side with the lower side as a fulcrum, so that the feed chain 3 is projected outward while preventing accidents such as contact with other objects and galling. Can be smoothly switched in a state in which is suppressed. The feed chain 3 is pulled out of the support member 60,
Since the handle 61 can also be used as a handle, the structure of the handle can be simplified.

The support members 60 and 61 support the feed chain 3 with a short rod portion, and the long rod portion is slidably fitted and supported in the slide cylinder 63, so that the feed chain 3 is stably supported on the fulcrum shaft. The switching between the transport position and the maintenance position can be performed in a compact structure with a simple structure. In addition, when the feed chain 3 is pulled out, the tilting is prevented by the restricting means, so that the switching between the feed posture and the maintenance posture of the feed chain 3 can be simplified.

[Brief description of the drawings]

FIG. 1 is a side view showing a main part of a threshing machine provided with the present invention.

FIG. 2 is a front view of FIG.

3 (A) is a side view showing the configuration of the space at the rear of the threshing machine, (B) is a front view of (A), and (C) is a plan view of (A).

FIG. 4 is a sectional view showing a mounting structure of a drive case.

FIG. 5 is a rear view showing the maintenance posture of FIG. 1;

FIG. 6A is a perspective view showing a configuration of a support member of a feed chain switching support structure, and FIG. 6B is a sectional view of the stopper.

FIG. 7 is a plan view of FIG. 1;

[Explanation of symbols]

 DESCRIPTION OF REFERENCE NUMERALS 1 threshing machine 1a side wall (lower wall) 1b rear wall 1c space 2 handling room 3 feed chain 5 fan case 6 switching support structure 6a short rod 6b vertical rod 6c long rod 6e spring (regulating means) 6g stay 8 drive Case 9 Chain receiver 30 Chain guide 60, 61 Support member 62 Support tube (switching support portion) 63 Slide tube (vertical pipe) 65 Support shaft (fulcrum shaft) 80 Mounting plate 82 Input pulley

 ────────────────────────────────────────────────── ─── Continued on the front page (72) Inventor Hiroyuki Fukuyori 667 Iya-cho, Oji, Higashiizumo-cho, Yatsuka-gun, Shimane 1 Mitsubishi Agricultural Machinery Co., Ltd.

Claims (6)

[Claims] 1. A top plate frame 23 along a handle 21 of a handle room 2.
A threshing machine in which a holding rail 3a is provided on the side and a feed chain 3 is provided on the lower wall 1a side to hold and transport the grain stalk.
1. A feed chain support structure for a threshing machine, which is pulled out sideways from a transport position via a support 1 and tiltably supported on the lower side as a fulcrum. 2. The support member 60, 61 is connected to the feed chain 3.
2. The feed chain support structure for a threshing machine according to claim 1, wherein said feed chain is also used as a handle when pulling out. 3. The support members 60 and 61 are formed by inwardly-shaped U-shaped rods in a side view, and the lower rod portion is made longer than the upper one to be slidably supported on the lower wall 1a side. Item 3. A feed chain support structure for a threshing machine according to item 1 or 2. 4. A rotating cylinder 66 for supporting the supporting members 60 and 61 on the lower wall 1a so as to be rotatable, and a slide cylinder 63 formed integrally with the rotating cylinder 66 so as to intersect orthogonally with the rotating cylinder 66. The feed chain support structure for a threshing machine according to claim 1, wherein the feed chain is supported by a support cylinder (62). 5. A device according to claim 1, further comprising a restricting means for restricting the tilting and rotation when the feed chain is being pulled out.
Or the feed chain support structure of the threshing machine of 3 or 4. 6. The feed chain support structure for a threshing machine according to claim 1, wherein the feed chain 3 is provided with a stay 6g for supporting a maintenance posture when the feed chain 3 rotates.