JPH1052159A - Waste straw conveying machine - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a waste straws conveyer for a combine harvester, which can smoothly convey waste straws while downsizing the structure. SOLUTION: In this waste straw conveyer, a guide rail 35 arranged opposite to the conveying face on the lower side of a waste straw chain 34 is constituted with a front side rail 35A and a rear side rail 35B, waste straws are made separately feedable to a first and a second waste straw disposing apparatuses, and the action length of the rear rail 35B is made switchable between the extension and shrinkage. In this case, the rear rail 35B is made of a cylindrical material, a compressed coil spring 51 supported its one end with the top end of the front rail 35A is inserted from the to end through the rear rail 35B, and the other end is set to the rear end of the rear rail 35B. Further, a part of the rear rail 35B is protruded and energized from the front rail 35A and the rear rail 35B is pulled in opposition to the energizing force to switch the action length of the rear rail 35B from the extension to the shrinkage vice versa with an extension operator 52.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a front rail portion and a rear rail supporting a front rail portion and a rearward cantilever at the front rail portion. And the part
The present invention relates to a combine stirrer conveying device configured to be capable of switching the length of operation of the rear rail portion so as to be capable of separately supplying the stirrer to first and second stirrer treatment devices arranged in front and rear below.

[0002]

2. Description of the Related Art Conventionally, in the above-described combine stirrer transport device, as disclosed in Japanese Patent Application Laid-Open No. 7-46939, a wire connected to a front end portion and a rear end portion of a rear rail portion is used. The wire is wound around a guide pulley near the rear end of the rear rail and guided to the control unit. The wire is connected to an operation pulley that is rotated forward and reverse by an operation lever. The working length of the rear rail portion is expanded and contracted by performing winding and feeding operations.

[0003]

According to the above-mentioned conventional structure, the structure is complicated because two wires are wound around two pulleys.

Therefore, as disclosed in Japanese Patent Application Laid-Open No. 63-7718, a front rail portion is formed of a cylindrical member, and one end of a spring as a spring material inserted through the front rail portion is connected to the front rail portion. The spring is supported by a fixed portion on the starting end of the front rail, the other end of the spring is supported by the starting end of the rear rail, and the rear rail is urged to project from the front rail. There has been proposed a technique in which an extension / retraction operation unit is provided for pulling an operation of a rear rail portion against a force to switch the operation length of the rear rail portion between expansion and contraction.

However, according to this configuration, since the spring is connected to the starting end of the rear rail portion, the support of the rear rail portion during extension becomes unstable, and the spring tends to wobble. There is a problem that it is difficult to carry it properly.

SUMMARY OF THE INVENTION It is an object of the present invention to provide a combine stirrer transfer device which can smoothly transfer stirrers while achieving a compact structure.

[0007]

[Means for Solving the Problems]

[Structure] The characteristic structure of the invention according to claim 1 is, in the combine stirrer conveying device described at the beginning, wherein the rear rail portion is formed of a tubular member, and one end portion is provided at a start end side of the front rail portion. Inserting the supported compression coil spring into the rear rail portion from the beginning of the rail,
The other end of the compression coil spring is supported at the end of the rear rail portion, and the rear rail portion is urged to project from the front rail portion, and the rear rail portion is pressed against the urging force. The present invention is characterized in that an extension / retraction operation unit for switching the operation length of the rear rail portion by extension / retraction by pulling operation is provided.

A feature of the invention according to claim 2 is that, in the invention according to claim 1, the rear rail portion extends so that the rear end portion thereof is close to the exhaust straw chain. The side rail portion is supported in a state of being inclined with respect to the front side rail portion.

According to the structure of the first aspect, the rear rail portion is formed of a cylindrical member, and a compression coil spring for urging the front rail portion from the rear rail portion is inserted into the rear rail portion. Therefore, the structure can be simplified as compared with the configuration in which two wires are wound around two pulleys as in the first related art.

As means for urging the rear rail portion to protrude from the front rail portion, a compression coil spring having one end supported on the start end side of the front rail portion is provided on the rear rail portion formed of a tubular member. It is inserted from the start end side and the other end is supported at the end of the rear rail part, so the rear rail part at the time of extension is stably supported and easy to follow the front rail part, the rear side at the time of extension The wobble of the rail portion can be prevented.

According to the configuration of claim 2, in addition to the same operation as the operation of the above-described configuration of claim 1, the terminal portion of the rear rail portion extends along with the extension of the rear rail portion. Because it is close to the waste straw chain, even if the end of the rear rail part is separated from the waste straw chain by the weight of the waste straw, etc., the distance is kept within a distance that does not hinder the sandwiching and transport of the waste straw. be able to.

[Effects] Therefore, according to the configuration of the first aspect, it is possible to provide a combine discharge stirrer transport device capable of smoothly transferring discharge stalls while achieving a compact structure.

According to the structure of claim 2, in addition to the effect similar to the effect of the structure of claim 1, it is possible to sufficiently suppress a decrease in the holding force at the time of transporting the waste straw.
It is now possible to secure a proper position for dropping straw.

[0014]

Embodiments of the present invention will be described below with reference to the drawings. As shown in FIG. 1, a traveling machine body 2 equipped with a crawler traveling device 1, a mowing pre-processing unit 3 equipped with a front part of the traveling machine body 2 so as to be able to move up and down around a horizontal axis,
A threshing device 4 mounted on the left side of the traveling machine body 2 is provided, and a waste straw processing unit 5 is provided at a rear portion of the threshing device 4 to constitute a combine.

As shown in FIG. 1 and FIG.
In the handling room, the spike portion is handled by a handling cylinder 9 which is driven and rotated in a handling room 8 while the feed chain 6 and the holding rail 7 hold the stem side of the grain stalk, and the receiving net 10 is leaked. The processed material is sorted in the lower sorting section into grains, second-pieces, waste straw and the like, and the grains are carried out to the outer grain recovery device on the lateral side by the first-piece collecting screw 11, and the second pieces are separated. Second collection screw 1
The processing is returned to the inside of the handling room 8 in step 2 and reprocessed, and the fine waste straw is discharged to the outside by the dust blower 13.

As shown in FIG. 3, a power transmission shaft 14 for driving the drum driven by the prime mover is provided on the opposite side of the port 15 in parallel with the axis P of the drum. 5 is connected to the input pulley 16 on the upper side in the grain conveying direction via a belt transmission mechanism 17, and the transmission shaft 14 extends to the lower side in the grain conveying direction, and as shown in FIG. The upper case 18 is pivotally supported on the lower case 19 so as to be freely openable and closable about the axis Q of the transmission shaft 14, and the upper case 18 and the support frame 20 thereof extend to the lower side in the grain culm transport direction, The extended portion 18A covers the waste straw processing section 5 (see FIGS. 2 and 4).

As shown in FIGS. 3 and 4, the waste straw processing unit 5 includes a stock transport mechanism 21 for clamping and transporting the stock side of the waste straw, and a spike side from above. A stirrer transport device 2 comprising a tip-locking transport mechanism 22 for locking and transporting
3, a waste straw cutter 24 (see FIG. 1) as a first waste straw processing device is attached to the rear of the threshing device 4, and a waste straw dropper 25 as a second waste straw processing device is provided behind the waste straw cutter 24. A processing switching mechanism 26 is provided to switch between a state in which the waste straw is shredded by the waste straw cutter 24 and discharge, and a state in which the discharge straw dropper 25 discharges the waste straw by a predetermined amount in a long straw state.

As shown in FIGS. 6, 10 and 12, the stock transfer mechanism 21 is of an upper chain type, and a chain 27 having a projection is formed by a guide wall 29 formed along the outer peripheral edge of a transfer frame 28; Wrapping around a drive sprocket 30 disposed on the transport end side of the transport frame 28 and a U-shaped guide frame 32 for chain tension, which is movable back and forth in the transport direction and is urged toward the upstream side of the transport by a compression coil spring 31, On the transport end side of the transport frame 28,
A stopper wall 33 (see FIG. 9) is provided to prevent the displacement of the chain 27 with the protrusion outward in the width direction, thereby forming a waste straw chain 34, and the holding rail 35 is arranged to face the waste straw chain 34 from below. Then, the discharge straw chain 34 and the sandwiching rail 35 are set in an inclined posture with respect to the transport action path R of the feed chain 6 in a plan view so that the discharge straw is transported obliquely to the tip side (see FIG. 3). , And is supported by the support frame 20.

As shown in FIG. 3 and FIG. 8, the spike engaging and transporting mechanism 22 includes a driving sprocket 3
6 and a chain 38 with a locking claw are wound around the idler wheel 37 on the transport start end side, and the drive sprocket 36 is parallel to the stock transport mechanism 21 in plan view and coaxial with the drive sprocket 30 of the exhaust straw chain 34. As a result, the transport frame 28 is supported by the support frame 20.

As shown in FIGS. 3 and 8, a drive system of the stock transfer mechanism 21 and the tip locking transfer mechanism 22 is provided at an extending end of the transmission shaft 14 for driving the handle. The bevel gear mechanism 39 suspended and supported by the support frame 20 is interlocked and connected to the bevel gear mechanism 39 and the two drive sprockets 3.
0 and 36 are linked via a chain transmission mechanism 40.

As shown in FIGS. 10, 11, 12 (a) and 12 (b), the exhausting straw chain 34 is pivotally movable up and down around the axis of the driving sprocket 30 at the end thereof. And a chain raising means 41 for raising the exhaust straw chain 34 to a maintenance position away from the holding rail 35 as the upper case 18 is opened, and a drain straw chain 34 as the upper case 18 is closed. There is provided a chain lowering means 42 for lowering the operating posture close to the holding rail 35.

As shown in FIGS. 6, 7 (a) and 7 (b), the chain lifting means 41 projects a rod 43 upwardly from the side of the starting end of the waste straw chain 34.
Upper and lower support plates 44 and 45 for vertically inserting and guiding the third through the respective guide holes 44a and 45a are provided on the support frame 20,
A flange 46 is formed on the rod 43 between the upper and lower support plates 44, 45, and a compression coil spring 47 is provided between the flange 46 and the lower support plate 45 to urge the rod 43 upward. Then, the waste straw chain 34 can be raised until the flange 46 contacts the upper support plate 44.

The chain lowering means 42 moves the rod 43 of the waste straw chain 34 to the upper case 18 such that the lower straw 18 is pushed down by the upper case 18 in the above-mentioned working posture as the upper case 18 is closed. A pressing plate 48 (see FIG. 4) for pressing the upper end of the rod 43 is provided, and a nut 49 as a pressed portion of the rod 43 pressed by the pressing plate 48 is provided on a male screw portion 43a formed on the upper end of the rod.
As the waste straw chain 34 is pushed down by the upper case 18, the nut 49 that contacts the upper support plate 44 is screwed to each other, and the lower nut 49 contacts the upper support plate 44. Until it hits, the exhaust straw chain 34 can be lowered. In this configuration, when the vertical position of the nut 49 is changed, the amount by which the waste straw chain 34 is pushed down can be changed. That is, the nut 49 and the lower support plate 4
5 and the like, an adjusting mechanism 50 capable of changing and adjusting the amount of pushing down of the waste straw chain 34 is configured so that the interval of the waste straw chain 34 with respect to the holding rail 35 in the working posture can be changed and adjusted freely.

As shown in FIG. 13, the holding rail 35 is composed of a front rail portion 35A and a rear rail portion 35B supported by the front rail portion 35A in a cantilevered rearward direction. Warack Cutter 24
, And the working length of the rear rail portion 35B is configured to be freely switchable between expansion and contraction so that the working straw can be separately supplied to the suction straw dropper 25.

That is, the above-mentioned processing switching mechanism 26 is constituted by a structure in which the holding rail is made telescopic. As shown in detail in FIG. 15, the front and rear rail portions 35 are provided.
A and 35B are formed of a pipe material, and a compression coil spring 51 whose one end is supported at the start end of the front rail portion 35A is inserted through the rear rail portion 35B from the rail start end, and the other end of the compression coil spring 51 is inserted. Is supported at the end of the rear rail portion 35B, and the rear rail portion 35B
Extend from the front rail portion 35A and pull the rear rail portion 35B against the urging force to switch the operation length of the rear rail portion 35B between expansion and contraction.
2 is provided.

As shown in FIG. 14, the cross-sectional shape of the front rail portion 35A is formed into an oblong vertically long ellipse, the cross-sectional shape of the rear rail portion 35B is formed circular, and the terminal portion of the rear rail portion 35B is formed. Is provided with a support portion 53 for lifting and supporting the front rail portion 35A. With the extension of the rear rail portion 35B, the rear rail portion 35B is moved to the front side so that the end portion thereof approaches the waste straw chain 34. It is supported in a state of being inclined with respect to the rail portion 35A.

The front rail portion 35A is connected across the upper ends of a pair of front and rear guide rods 57 slidably supported on a frame and a waste straw cutter case (not shown). The compression coil spring 58 elastically urges the front rail portion 35A toward the exhaust straw chain 34.

The telescopic operating section 52 is provided with an operating lever 55 operated via an operating wire 54 and a lever guide 56 having a plurality of lever engaging portions 56a.

[Brief description of the drawings]

FIG. 1 is an overall side view of a combine.

FIG. 2 is a longitudinal side view of a structure around a combine threshing device.

FIG. 3 is a plan view of the structure around the threshing apparatus with the upper case opened.

FIG. 4 is a perspective view of a waste straw transport device.

FIG. 5 is a longitudinal rear view of the threshing apparatus.

FIG. 6 is a longitudinal sectional side view showing a starting end of a stock transfer mechanism.

FIG. 7A shows the chain raising means and the chain lowering means when the waste straw chain is lowered. FIG. 7B shows the chain raising means and the chain lowering means when the waste straw chain is raised.

FIG. 8 is a cross-sectional plan view of an end portion of the waste straw conveying device.

FIG. 9 is a perspective view showing an end portion of the stock transport mechanism.

FIG. 10 is a diagram showing a positional relationship between an upper case and a waste straw chain in an operating posture.

FIG. 11 is a diagram showing a positional relationship between an upper case and a waste straw chain in a maintenance posture.

12A is a diagram showing a state in which the exhaust straw chain is in an operating position; and FIG. 12B is a diagram showing a state in which the exhaust straw chain is in a maintenance position.

FIG. 13 is a vertical sectional side view of a waste straw processing unit.

FIG. 14 is a vertical cross-sectional view of a waste straw chain and a holding rail.

FIG. 15 is a diagram showing a process switching mechanism.

[Explanation of symbols]

 24 first waste straw processing device 25 second waste straw processing device 34 waste straw chain 35 pinching rail 35A front rail portion 35B rear rail portion 51 compression coil spring 52 telescopic operation portion

Claims (2)

[Claims] 1. A guide rail, which is opposed to and disposed along a lower transport surface of a waste straw chain, includes a front rail portion, and a rear rail portion supported by the front rail portion in a cantilevered rearward direction. , The first lined back and forth below
And it is possible to supply the waste straw separately to the second waste straw processing device,
A combine stirrer / conveyance device configured to be capable of changing the operation length of the rear rail portion so as to be capable of switching between expansion and contraction, wherein the rear rail portion is formed of a cylindrical member, and one end is a start end of the front rail portion. The compression coil spring supported on the side is inserted into the rear rail portion from the beginning of the rail, and the other end of the compression coil spring is supported at the end of the rear rail portion, and the rear rail portion is Discharge of a combine provided with an expansion / contraction operation unit that protrudes from the front rail portion and pulls the rear rail portion against the urging force to switch the operation length of the rear rail portion between expansion and contraction. Straw conveyor. 2. The rear rail portion is supported in an inclined state with respect to the front rail portion so that the rear end portion of the rear rail portion approaches the drain straw chain as the rear rail portion extends. 2. The combine straw discharging device according to claim 1, wherein