JPH1052160A - Combine harvester - Google Patents

Abstract

PROBLEM TO BE SOLVED: To enable smooth conveyance of waste straws even when the load of a threshing drum is increased. SOLUTION: This combine harvester is equipped with a waste straw conveyer 23 which receives waste straw from a threshing unit 4 and conveys them backward, and this waste straw conveyer 23 comprises a plant foot conveying mechanism 21 which conveys the plant foot of the waste straws with a waste straw chain 34 and a nipping rail opposing to the waste straw chain 34 and equipped with a straw ear tip-latching and conveying mechanism 22 of an endless rotor 38 having latching projections. In this case, driving sprockets for the plant foot conveying mechanism 21 and the ear tip-latching and conveying mechanism 22 are concentrically arranged and a transmission shaft 14 for driving a threshing drum is arranged in parallel with the shaft of the threshing drum on the contrary side to a threshing opening 15, and extended downward in the straw-conveying direction and both driving sprockets are synchronously connected to the end of the extended shaft.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

[0001] The present invention relates to a waste straw transporting device for receiving waste straw from a threshing device and transporting the waste straw backward.
In order to compose this waste straw transporting device, there is provided a stock transport mechanism for sandwiching and transporting the stock side of the waste straw by a waste straw chain and a sandwiching rail opposed thereto, and the end straw is provided with an endless rotating body having a locking projection. The present invention relates to a combine provided with a tip locking and transporting mechanism for locking and transporting the tip of a straw.

[0002]

2. Description of the Related Art Conventionally, in the above-mentioned combine, a transmission shaft for driving a handle cylinder and a front end of the handle cylinder shaft are connected via a belt transmission mechanism, and a discharge straw conveying device is provided at a rear end of the handle cylinder shaft. The power is transmitted from the handle cylinder shaft to the waste straw conveying device by interlocking connection (for example, Japanese Utility Model Laid-Open No. 2-59343).

[0003]

According to the above-mentioned conventional construction, power is transmitted from the handle cylinder shaft to the waste straw transporting device, so that the load on the handle cylinder increases and the rotational speed of the handle cylinder increases. As a result, the driving force of the discharging straw holding / conveying device also decreases, and it becomes difficult to smoothly transport the discharging straw, and the discharging straw is sometimes clogged in the discharging straw chain or the like.

An object of the present invention is to make it possible to smoothly transport a waste straw even when the load on a handling cylinder increases.

[0005]

[Means for Solving the Problems]

[Structure] The characteristic structure of the invention according to claim 1 is that, in the combine described at the beginning, the drive sprockets of the stock-source transfer mechanism and the tip-locking transfer mechanism are concentric with each other at their transfer end side. In this state, the transmission shaft for driving the handle cylinder is arranged in parallel with the handle shaft axis on the opposite side to the handle, and extends to the lower side in the grain stalk transport direction. The drive sprocket is interlockingly connected.

According to a second aspect of the present invention, in the threshing apparatus according to the first aspect, the upper case supporting the handling cylinder is pivotally supported on the lower case so as to be openable and closable around the transmission shaft. Has been constituted.

According to the first aspect of the present invention, since the discharge straw conveying device is directly driven by the transmission shaft for driving the drum,
Even when the load on the handling cylinder increases and the rotation speed of the handling cylinder decreases, the driving force of the waste straw transport device does not decrease.

Since the drive sprockets for the stock transfer mechanism and the tip locking transfer mechanism are arranged on the transfer end side thereof, the discharge straw is moved from the transfer start end to the end to the discharge straw chain and the endless rotating body with projection. The transfer can be performed on the tight side, and the transfer can be performed smoothly and reliably.

According to the configuration of the second aspect, the following operation can be obtained in addition to the operation of the first aspect.
In the structure in which power is transmitted from the handling cylinder shaft to the waste straw conveying device as in the above-described conventional technology, the rear end of the handling cylinder shaft and the waste straw transport device are connected by a bevel gear mechanism or the like, and the Although the structure around the rear end becomes complicated, according to the configuration of claim 2, the bevel gear mechanism and the like can be omitted, and a wide space can be formed around the rear end of the handling cylinder shaft. Even if the waste straw is clogged in the waste straw chain or the like, it is possible to easily perform the work for removing the straw waste by opening the upper case.

[Effect] Therefore, according to the configuration of the first aspect, even if the load on the handling cylinder increases, the waste straw can be smoothly and reliably transported, and the waste straw is hardly clogged in the waste straw chain or the like. did it.

According to the configuration of claim 2, in addition to the same effect as the effect of the configuration of claim 1, the workability of the maintenance work can be improved.

[0012]

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 drum axis P. 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 holding and transporting the stock 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 with 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 can be extended and retracted in the transport direction and is protruded toward the upper 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 FIGS. 3 and 8, the tip locking and conveying mechanism 22 includes a drive 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 transport mechanism 21 and the tip locking transport mechanism 22 is provided at the extending end of the transmission shaft 14 for driving the handle cylinder. 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 (b), the discharge straw chain 34 is vertically pivoted about the axis of the drive sprocket 30 at the end thereof. Chain raising means 41 that raises the waste straw chain 34 to a maintenance position separated upward from the holding rail 35 as the upper case 18 is opened, and the waste 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 upward 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 discharge straw chain 34 to the upper case 18 so 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 rearward cantilever shape. 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 a vertically long oval, the cross-sectional shape of the rear rail portion 35B is formed into a circular shape, and the rear end portion of the rear rail portion 35B is formed. Is provided with a support portion 53 that lifts and supports 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 by 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 operation section 52 includes an operation lever 55 operated via an operation wire 54 and a lever guide 56 having a plurality of lever engagement 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]

 Reference Signs List 4 threshing device 9 handling cylinder 14 transmission shaft 15 handling port 18 upper case 19 lower case 22 ear locking transport device 23 discharge straw transport device 34 discharge straw chain 30, 36 drive sprocket 35 clamping rail 38 endless rotating body

Claims (2)

[Claims] 1. A waste straw transporting device for receiving a waste straw from a threshing device and transporting the waste straw backward, the waste straw transporting device is configured by a waste straw chain and a clamping rail opposed to the waste straw chain. A combiner transport mechanism for clamping and transporting the feeder side, and a tip locking transport mechanism for locking and transporting the tip side of the discharge straw with an endless rotating body having locking projections. The drive sprockets of the transport mechanism and the tip locking transport mechanism are arranged concentrically with each other on the transport end side, and the transmission shaft for driving the cylinder is disposed on the opposite side of the port from the handle shaft. A combine which is arranged in parallel with the core and extends to the lower side in the grain stalk transport direction, and the two drive sprockets are interlockingly connected to the extended end. 2. The combine threshing device according to claim 1, wherein an upper case supporting a handling cylinder is pivotally supported on a lower case so as to freely open and close around the power transmission shaft to constitute the threshing device.