JPH07227141A - Waste straw conveyor of combine harvester - Google Patents

Abstract

PURPOSE:To provide a waste straw conveyor capable of changing the bundling position according to the length of waste straws corresponding to long or short waste straws without requiring increase of the weight or complication of the structure. CONSTITUTION:This waste straw conveyor involves a waste straw conveying unit 2 equipped with a chain 2a having projections and an expandable guide rail 2b arranged along the lower side of this chain 2a so as to face it and capable of conveying horizontal-posture waste straws sent from a threshing feed chain in the oblique direction to the ear tip side when plan-viewed while nipping them between the chain 2a and the guide rail 2b. This conveyor also involves a guide rail expansion control mechanism 23 capable of expanding and contracting the guide rail 2b by linking the guide rail 2b to an operation of a control lever 16, changing the position for discharging the waste straws and selectively feeding the waste straws to the front waste straw cutter 3 or the rear waste straw bundling unit 4 and a lever holding unit 25 capable of holding a control lever 16 at an arbitrary control position in the control passage of the control lever 16 in a state in which the waste straws are fed to the bundling unit 4.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a chain with protrusions, which is arranged to face each other along the lower side of the chain,
Equipped with a retractable guide rail, it is provided with a waste straw transporting section that conveys the waste straw in a sideways posture inherited from the threshing fido chain diagonally to the tip side in plan view while holding it between the chain and the guide rail. , The discharge straw discharge position is changed by expanding and contracting the guide rail in conjunction with the operation of the operation lever, and the discharge straw is selectively supplied to the front waste straw shredding device and the rear waste straw binding device. The present invention relates to a combine straw discharge conveyor device provided with a guide rail expansion / contraction operation mechanism.

[0002]

2. Description of the Related Art Conventionally, in the above-mentioned discharge straw conveying device, the guide rails can be supplied to the discharge straw cutting device at the front and the shortest length, and to the discharge straw binding device at the rear. It could only be set in two ways with the longest length (for example, Japanese Utility Model Laid-Open No. 2-17047).

[0003]

According to the above-mentioned conventional structure, since the discharge straw sent to the bundling device always passes through the guide rail set to the longest length, it is slanted by the chain and the guide rail. The end of the pinching and conveying is the same position for all the discharge straws sent to the binding device, and all the discharge straws are exposed to the binding device at the same distance from the lower end of the discharge straw. Was there. As a result, the length from the lower end of the discharge straw to the bundling position is the same regardless of whether it is a long discharge straw or a short discharge straw. The equilibrium with the length from the tip to the tip became worse due to the discharge straw on either side of the long and short, and the binding state was likely to become unstable. Therefore, in order to improve the above-mentioned balance and stably bind to both long and short discharge straws, the discharge straw binding device itself can be slid to the left and right, and the binding position can be changed. However, this structure requires an actuator, a rail for sliding movement, and the like, which not only increases the weight but also tends to complicate the structure.

An object of the present invention is to provide a waste straw conveying device capable of changing the bundling position for each long and short waste straws according to the length of the waste straws, and at the same time preventing increase in weight and complication of structure. Especially.

[0005]

The characteristic configuration of the present invention is to provide a lever holding means capable of holding the operation lever at an arbitrary operation position in the operation path of the operation lever in a state where the discharge straw is supplied to the binding device. The point is that it is provided.

[0006]

[Operation] By holding the operation lever at any operation position in the path of the operation lever by the lever holding means,
The length of the guide rail can be set to a length corresponding to the operating position of the operating lever. In this case, as the length of the guide rail is increased, the diagonal conveyance in the sandwiched state by the chain and the guide rail continues to near the binding device, and the length from the stock end of the discharge straw to the binding position becomes shorter. . On the contrary, the shorter the length of the guide rail,
The oblique conveyance ends at a position away from the bundling device, after which the discharge straw is sent backward in parallel, the part far from the stock end of the discharge straw faces the binding device, and the lower end of the discharge straw to the binding position. The length becomes longer.

Therefore, for example, in the case of a short discharge straw, the length of the guide rail is set to be long so as to shorten the length from the stock end of the discharge straw to the binding position, and in the case of a long discharge straw, the guide rail is By setting the length shorter and increasing the length from the lower end of the discharge straw to the binding position, the length of the discharge straw from the stock end to the binding position and the length from the binding position to the tip are balanced. Can be improved for both long and short discharge straws, and both discharge straws can be stably bound.

Further, in the above structure, since only the lever holding means capable of holding the operation lever at any operation position in the operation path of the operation lever is provided, for example, when the binding device itself is slid to the left and right. It is possible to prevent an increase in weight and a complicated structure as described above.

[0009]

As described above, it is possible to provide a discharged straw transporting device which can reduce the weight while stably binding the discharged straw regardless of its length and can be manufactured at a low cost with a simple structure. .

[0010]

Embodiments of the present invention will be described below with reference to the drawings. As shown in FIGS. 4 and 5, the discharged straw that has been carried out from the threshing feed chain of the threshing device 1 in a sideways posture is obliquely conveyed to the tip side in plan view by the discharged straw conveying unit 2 of the discharge straw conveying device. , Is sent to the front waste straw shredding device 3 or the rear waste straw binding device 4.

The discharge straw conveying unit 2 of the discharge straw conveying device is
As shown in FIG. 1, a chain 2a with a protrusion and a slide telescopic guide rail 2b that is arranged to face each other along the lower side of the chain 2a are provided, and a discharge straw is provided between the chain 2a and the guide rail 2b. It is configured to be carried while being held between them.

The discharge straw conveying device includes an operating lever 16
The discharge straw discharging position is changed by expanding and contracting the guide rail 2b in association with the operation of the discharge straw shredding device 3
A guide rail expansion / contraction operation mechanism 23 for selectively supplying the discharged straw to the discharged straw binding device 4 is provided. The guide rail expansion / contraction operation mechanism 23 will be described in detail. As shown in FIGS. 1, 2 and 5, the extension operation wire 9 and the contraction operation wire 10 are attached to the guide rail 2b, and the cockpit 6 The support box 8 is housed in a part of the Glen tank 5 at the rear of the, and the two sets of winding grooves in the pulley 11 are rotatably supported around the horizontal axis P1 of the support box 8. The wires 9 and 10 are wound in opposite directions. Then, the horizontal axis P of the support box 8
A large-diameter fan-shaped gear 12 is rotatably supported around 2, and the fan-shaped gear 12 meshes with a small-diameter gear 13 fixed to a pulley 11.

On the other hand, around the horizontal axis P3 in the upper part of the support box 8, the first operation arm 14 having a side L shape is formed.
Is rotatably supported, and the first operation arm 14 and the fan-shaped gear 12 are interlockingly connected via a link 15. The operation lever 16 is supported by the boss portion 14b of the first operation arm 14 so as to be swingable around the horizontal axis P3 and tilted to the left and right due to the structure of the stupid hole. A spring 17 for prevention is attached.

With the above-mentioned structure, the operation lever 16 is shown in FIG.
At the engaging portion 14a of the first operating arm 14
By engaging the lever 11, the pulley 11 can be largely rotated in the forward and reverse directions by swinging the operation lever 16 around the horizontal axis P3. That is, as shown in FIGS. 1 and 3, when the operation lever 16 is moved to the (A) position along the lever guide 18, this operation is amplified by the fan-shaped gear 12 and the pulley 11 rotates counterclockwise in FIG. The moving wire 10 is wound around the pulley 11 and the guide rail 2b is contracted. On the contrary, when the operation lever 16 is swung to the (B) position, the pulley 11 rotates clockwise in FIG. 1, the wire 9 is wound around the pulley 11 and the guide rail 2b is extended.

As shown in FIGS. 1 and 2, the second operating arm 19 is swingably supported around the horizontal axis P3 of the support box 8 and, as shown in FIG. The upper surface of the device 3 can be freely opened and closed by swinging around the horizontal axis P4,
Moreover, a discharge wall guide plate 21 biased to the closing side by a spring 20 is provided, and the second operation arm 19 and the discharge wall guide plate 21 are connected via a wire 7.

With the above structure, the operation lever 16 is shown in FIG.
By tilting to the right and engaging with the engaging portion 19a of the second operating arm 19, the second operating arm 19 can be swung around the horizontal axis P3 by the operating lever 16. In other words, the discharge straw guide plate 21 can be closed by swinging the operation lever 16 along the lever guide 18 to the (C) position, and the discharge straw guide plate 21 can be closed by operating the operation lever 16 to the (D) position. 21 can be opened.

Then, the above-mentioned first operation arm 14 and second
When the guide rail 2b is contracted as shown in FIGS. 1 and 3 by the combination with the operation arm 19, the operation lever 16 is moved to the second operation arm 19 while the operation lever 16 is operated to the (A) position. Discharging straw guide plate 2 by engaging with
1 is closed [(C) position], the discharged straw is fed from the discharged straw guide plate 21 to the discharged straw bundling device 4, and the discharged straw guide plate 21 is opened upward [(D )
Position], the discharged straw can be sent to the discharged straw shredding device 3 and can be switched to a state for shredding. On the contrary, the guide rail 2b is extended by engaging the operation lever 16 with the first operation arm 14 in a state where the discharge straw guide plate 21 is closed [the operation lever 16 is operated to the (C) position]. The discharged straw can be brought into the discharged straw binding device 4 by the packer 24.

Further, the lever guide 18 is provided with an operation lever 16 in a state in which the discharged straw is supplied to the binding device 4.
Lever holding means 25 capable of holding the operation lever 16 at an arbitrary operation position in the operation path is provided. This lever holding means 25 is an engaging groove 25 into which the operation lever 16 can be engaged.
A plurality of a are formed in the lever guide 18 along the operation direction of the operation lever 16. With this structure, the length of the guide rail 2b can be set to a length corresponding to the operating position of the operating lever 16. That is, the operation lever 16 is moved to the engaging groove 25a at the positions (E) and (F) in FIG.
Guide rail 2b,
It can be stretched more.

In this case, as the length of the guide rail 2b is set longer, the slanted conveyance in the state of being clamped by the chain 2 and the guide rail 2b is continued to the vicinity of the binding device 4, and the stock of the discharged straw is discharged. The length from the edge to the binding position becomes shorter. On the contrary, as the length of the guide rail 2b is set to be shorter, the oblique conveyance ends at a position away from the binding device 4, and thereafter, the parallel movement is performed only backward.
The length from the stock end of the discharged straw to the binding position becomes long.

Therefore, in the case of a short discharge straw, the operation lever 16 is engaged in the engagement groove 25a at the (B) position, and as the discharge straw becomes longer, the engagement grooves at the (F) and (E) positions are formed. 25
If it is inserted into a, the length of the discharged straw from the stock end to the binding position and the length from the binding position to the tip can be well balanced for both long and short discharging straws. It can be stably bound with the discharged straw. It is also easy to intentionally set the bundling position near the stock end or near the tip.

[Other Embodiments] In the lever holding means 25, a pair of elastic plates made of rubber or the like capable of elastically sandwiching the operating lever 16 is provided on the lever guide 18 along the operating direction of the operating lever 16. May be. With this configuration, the operation position of the operation lever 16 can be held at any position in the path, the length of the guide rail can be changed steplessly, and the binding position of the discharge straws can be changed to the length of the discharge straws. It can be finely adjusted.

It should be noted that reference numerals are given in the claims for convenience of comparison with the drawings, but the present invention is not limited to the configurations of the accompanying drawings by the entry.

[Brief description of drawings]

FIG. 1 is a side view showing a linking structure between an operation lever and a waste straw conveying device.

FIG. 2 is a vertical sectional front view of the vicinity of an operation lever and a pulley.

FIG. 3 is a plan view of a lever guide for an operating lever.

FIG. 4 is a plan view showing a conveyed state of a discharge straw.

FIG. 5 is an overall plan view of the combine

[Explanation of symbols]

 2a Chain 2b Guide rail 16 Operation lever 2 Discharge straw transport unit 23 Guide rail expansion / contraction operation mechanism 25 Lever holding means

Claims (1)

[Claims] 1. A chain (2a) having a projection, and a guide rail (2b) arranged to face each other along the lower side of the chain (2a) and extendable and contractible, and inherited from a threshing fido chain. In addition, an exhaust straw transporting section (2) for slantingly transporting the horizontal exhausted straws between the chain (2a) and the guide rail (2b) to the tip side in plan view is provided, and the operation lever (16) is provided. By extending and contracting the guide rail (2b) in conjunction with the operation, the discharge straw discharge position is changed, and the discharge straw cutting device (3) in the front part and the discharge straw binding device (4) in the rear part are discharged. A combine straw discharge conveyor device provided with a guide rail expansion / contraction operation mechanism (23) for selectively supplying straws, wherein the operation lever (16) is provided in the supply state of the discharge straws to the binding device (4). ) Operation Any operation position in the operating lever (16) capable of holding the lever holding means (25) discharging straw conveying device combine that is provided to in.