JPH0339Y2 - - Google Patents

Description

[Detailed description of the invention] [Industrial application field] In order to advantageously dry the bundled waste straw bundles naturally, the present invention is to discharge the waste straw bundles into the field so that they stand up when they are discharged. Regarding combine harvesters.
More specifically, there is a bundling device that binds the waste straw after threshing, and the bundle of waste straw after the bundling process is conveyed while being held between an endless rotating band with a protrusion and a pinching rail, and is discharged outside the machine in an upright position. The present invention relates to a combine harvester equipped with a clamping and conveying device.

[Conventional technology]

In this type of combine harvester, if the combine harvester is equipped with a general conveyance device that simply pinches and conveys the tip side of the bundled waste straw and releases it from the end of the conveyance device, the bundle of waste straw that has been dropped and is released will be removed from the field. The probability of successfully standing up on a surface (hereinafter referred to as 3D ratio) was extremely low, and it required a great deal of effort to manually stand up fallen straw bundles that could not stand up.

The reason for the low three-dimensionality ratio mentioned above is that the waste straw bundle discharged from the conveying device does not spread sufficiently on the stock base side, which becomes the hem when it stands up, and the ground contact area around the hem when it lands is small.

The posture of the waste straw bundle released from the end of the conveying device with inertia in the feeding direction is unstable, and the posture is not necessarily close to the upright posture upon landing.

Possible reasons include the above.

Therefore, in the past, techniques having the following configuration and operation have been used, such as the combine harvester described in Japanese Utility Model Application Publication No. 55-45717.

That is, the present invention includes a conveyance device consisting of an endless belt and a clamping body that clamps the tips of the bundles of waste straw after the bundling process, and conveys the bundles of waste straw rearward and upward. During this conveyance, the straw bundle is slightly rotated due to the frictional resistance of the clamping body, and the stem portion of the straw bundle is spread into a conical shape using the rotational action. Straw bundles in an upright position with the base portions spread out in a conical shape are discharged from the end of the conveyance path, guided by a regulating member, and made to stand up.

[Problem that the invention attempts to solve]

According to the above-mentioned conventional technology, by slightly rotating the waste straw bundle during conveyance, the stock base side, which is the bottom surface of the hem when the waste straw bundle stands up, is shaped into a circular shape and is made to spread out to some extent. As a result, the small ground contact area upon landing described above can be improved to some extent. Furthermore, since a regulating member is used to guide the posture of the discharged waste straw bundle, it is thought that the problem caused by the instability of the discharge posture described above can be alleviated to some extent as long as the discharge conditions are constant.

However, in this conventional technique, since the rotation of the waste straw bundle is caused by frictional resistance with the clamping body, it is difficult to stably determine the degree and timing of rotation. Therefore, the width of the hem of the waste straw bundle becomes wider or narrower, making it difficult to secure a predetermined three-dimensional ratio. In addition, if the rotation of the waste straw bundle is performed only at the conveyance start end side of the conveyance path, and there is no further rotation, the hem that was once widened will not shrink, and in the end, even if the bundle is rotated, The hem of the waste straw bundle is discharged with insufficient spread.

Even if a regulating member is provided to guide the waste straw bundle after being discharged, the speed at which the waste straw bundle comes into contact with the regulating member is not stable, making it difficult to guide the waste straw bundle as initially. In other words, as mentioned above, the degree and timing of the rotation of the waste straw bundle is unstable;
If the waste straw bundle is rotated quickly at the end of the conveyance path, most of the conveying force of the conveying device in the discharge direction is converted into the rotational momentum of the waste straw bundle.
The movement speed due to inertia in the discharge direction is small, and impactful contact with the regulating member can be avoided, but if the waste straw bundle has hardly rotated at the end of conveyance, the conveying force of the conveying device will cause the waste straw bundle to This acts as a linear discharge in the conveying direction, and the waste straw bundle strongly collides with the regulating member, causing posture disturbance. Therefore, it is difficult to dispose the regulating member so as to properly guide the waste straw bundle in accordance with the discharge speed in the discharge direction.

If the conveyance speed of the waste straw bundle by the conveyance device itself is set to be slow enough so that the waste straw bundle does not collide strongly with the regulating member even if it is hardly rotated at the time when it is released at the end of the conveyance, the Since the difference in contact speed of the discharged straw bundles is reduced and strong collisions do not occur, it is easy to make the guiding action of the regulating member relatively effective. However, in this case, combine harvesters that require high efficiency It is not suitable to use it as a means for transporting the waste straw in itself, and the rotational speed when slightly rotating the waste straw bundle during the transport becomes slow, making it impossible to fully expand the stock side.

A new problem arose as described above.

The present invention is capable of efficiently transporting waste straw bundles without reducing the transport speed of the waste straw conveying device, while sufficiently expanding the contact area of the discharged waste straw bundles when they land. This prevents the waste straw bundle from collapsing after landing, and when the waste straw bundle is discharged from the end of the waste straw conveyance route, the waste straw bundle is brought into contact with the regulating member stably with less impact, and at the time of falling. The purpose of this is to effectively avoid disturbances in the posture of the waste straw bundles and to further improve the three-dimensionality overall.

[Means for solving problems]

A feature of the technical means of the present invention taken to achieve the above object is that the pinching rail is located at the end of the linear conveying path portion of the pinching and conveying device and immediately before the waste straw bundle outlet where the pinching force is released. A resistance protrusion that protrudes into the conveyed and discharged straw bundle in a direction that crosses the linear conveyance path is attached to the section, and the conveyed and discharged straw bundle is The nipping and conveying action starting end of the nipping and conveying device is configured to emit while rotating, and
It is arranged closer to the base of the bundle of waste straw than the needle for supplying the binding string so as to sandwich the plant head side of the bundle of waste straw in the direction of the culm of the bundle of waste straw, and further,
At a position opposite to the terminal end of the linear conveyance path, contact is made with the intermediate portion of the waste straw bundle in the culm direction so as to restrict inertial movement in the release direction of the waste straw bundle released in an autorotating state. Equipped with a contact part with vertical width,
In addition, a regulating member is provided which is configured to guide the waste straw bundle in the falling direction by its own weight by aligning its abutting portion with the falling direction of the waste straw bundle.

As a result of taking the above technical means, the following actions and effects can be obtained.

[Effect]

(i) The stiff part on the stock side of the waste straw bundle,
The resistance protrusions bite into the parts that have become hard due to the tightening of the bundling, providing resistance to the waste straw bundle, so for example, the frictional resistance of the pinching rail may cause slipping or shifting movement, similar to the resistance caused by rough surfaces. This provides resistance to the waste straw bundle so that the movement of a part of its circumferential surface in the conveying direction is temporarily stopped. Therefore, the waste straw bundle rotates on its own axis at a substantially constant circumferential speed that is as fast as the circumferential speed of the endless rotating belt with projections, and its base side is greatly expanded.

(ii) Since the resistance protrusion is provided at the end of the linear conveyance path and immediately before the waste straw bundle discharge port where the clamping force is released, the rotation of the waste straw bundle starts immediately before the discharge. Moreover, even after being released, the waste straw bundle continues to rotate on its axis. Therefore, the range in which the rotation continues is brought as close to the landing time as possible, and the waste straw bundle expanded by rotation is It is easy to maintain the ground contact area on the stock side as large as possible.

(iii) In addition, the discharged straw bundle comes into contact with the regulating member facing the end of the linear conveyance path while rotating, and its inertial movement in the discharge direction is stopped and it is guided in the direction of its own weight fall. Compared to the case where a bundle of waste straw that is not rapidly rotating collides with a regulating member and falls under its own weight, the posture of the bundle of waste straw is less disturbed and it is easier to guide it in the direction in which it falls under its own weight. In other words, if the waste straw bundle is released from a straight conveyance path without rotating at all, the initial velocity of the waste straw bundle in the release direction at the time of release is as large as the circumferential speed of the endless rotating belt with protrusions. However, if the waste straw bundle rotates on its own axis, especially if the circumferential speed of the rotation is as fast as the circumferential speed of the endless rotating belt with protrusions, The velocity in the discharge direction along the discharge direction and the accompanying inertia become extremely small, so that the waste straw bundle is prevented from strongly colliding with the regulating member due to its own inertia and causing a large attitude change. Therefore, a good guiding effect is produced by the regulating member.

(iv) The discharged waste straw bundle generates a moment of inertia in the rotational direction due to its rotation, and it maintains a good standing position on its own, just like when it is thrown out by spinning a top (toy piece), and the combine This prevents the posture of the straw bundle from wandering due to vibrations of the machine and inertia caused by the movement of the machine.

(v) Furthermore, since the resistance protrusion is provided immediately before the waste straw discharge port at the end of the straight line conveyance path among the ends of the waste straw conveyance path, for example, the end of the waste straw conveyance path can be In the case where the rotating part of the moving band is provided with something equivalent to the resistance protrusion described above, the waste straw bundle during conveyance rotates on its axis and moves to the center of rotation of the endless rotating band with the protrusion. It revolves around the center of rotation, and the stock side is swung around a lot, causing posture disturbance, and the scraping action of the protrusions of the endless rotating band with protrusions that occur as it rotates makes it difficult for the waste straw bundles to separate from the protrusions. Therefore, there is no problem such as disturbance of the posture due to this, and the discharge posture from the end of the linear conveyance path is also stable.

[Effect of idea]

(b) From the effects of (i) and (ii) above, a rotational force is reliably applied to the discarded straw bundle in the strong part on the stock head side, and the discarded straw bundle on the stock base side touches the ground at the time of landing. This has the effect of ensuring a sufficiently large area, allowing stable landing, and improving the three-dimensionality.

(b) By the effects of (iii), (iv), and (v) above, the discharged waste straw bundles are allowed to fall stably under their own weight, and in this respect, the three-dimensionality of the waste straw bundles can be further increased.

〔Example〕

Embodiments of the present invention will be described below based on the drawings.

A binding device 2 is provided at the rear of the threshing device 1, and a clamping and conveying device 3 is provided at the rear of the binding device 2 and is tilted so as to be located upward in the direction of conveyance to reap and thresh the planted grain culms in the field. The combine harvester is configured so that the grains are harvested, and the waste straw after threshing is bundled and discharged into the field.

The binding device 2 is configured with a string supply section 4 provided on the lower front side of the machine body with the convergence space S interposed therebetween, and a knot section 5 provided on the rear upper side of the machine body. The waste straw is guided down by the string supply section 4 and the cover 7 for the transmission system thereto, and is supplied to the focusing space S, and the tip of the focused waste straw in the culm direction is supplied to the focusing space S based on the detection of a predetermined amount of focusing state by the sensing door 8. The structure is such that the bundles of waste straw are bundled on the side and discharged by discharge arms 9a and 9b.

The holding and conveying device 3 includes an endless rotating band 1 with a protrusion.
0 and a pinching rail 11, and the starting end A of the pinching and conveying action by both of them is located closer to the needle 12 constituting the string supply section 4 and closer to the plant base in the direction of the culm of the waste straw. The front end of the endless rotating band 10 with projections is extended to a location that is lower than the focusing space S in rear view and corresponds to the lower side of the base end of the plant in the direction of the removed straw culm in the focused state. Thus, a locking and conveying action section 3a of the clamping and conveying device 3 is formed.

A state in which power is transmitted from the transmission part for the string supply part 4 to the endless rotating band side sprocket 13 via a transmission mechanism 14, and also serves as a part of a cover that covers the transmission mechanism 14. in,
A guide 15 is provided in a downwardly downward position to receive the stock end side of the waste straw bundle discharged from the bundling device 2 and direct the stock end side toward the rear of the machine rather than the tip side. The waste straw bundles that were
The clamping and conveying device 3 is configured to clamp the fruit on the side closer to the plant base in the direction of the culm than the binding position B, and to convey it in a state where the posture is changed in a direction substantially perpendicular to the conveying direction.

In the linear conveyance path R portion on the conveyance end side of the pinch conveyance device 3, resistance protrusions 16 are successively provided on the pinch rail 11 in such a manner that they protrude toward the endless rotating belt 10 side with protrusions and are arranged in the conveyance direction. , a conveyance resistance was applied to the conveyed and discharged straw bundle, and as shown in FIG. 3, the discharged straw bundle was rotated on its own axis in cooperation with the locking action of the endless rotating band 10 with protrusions, and flattened as it was clamped. The bundle is configured to be released from the clamping and conveying device 3 in a state where the bundle is circularized and the base side is expanded into a skirt shape. That is, the resistance protrusion 16 is provided at the end of the linear conveyance path R and immediately before the discharge straw bundle discharge port C where the clamping force is released.
It is configured to discharge the waste straw bundle while rotating it.

In a state of integrally extending from the pinching rail 11,
It acts on the waste straw bundle linearly separated and discharged from the end of the linear conveyance path R of the clamping and conveying device 3 to restrict its inertial movement in the direction of discharge, and at the same time, it is held in an almost standing position with the stock side facing down. A regulating member 17 is provided to guide the waste straw bundle so that it falls under its own weight.
It is configured so that it can be dropped and released with its stock side expanded and then placed in a field. That is, the regulating member 17, as shown in FIGS. 1 and 2,
At a position opposite to the end of the linear conveyance path R, it contacts the intermediate portion of the waste straw bundle in the culm direction so as to restrict inertial movement in the release direction of the waste straw bundle released in an autorotating state. It is configured to include a contact portion having a vertical width and to align the contact portion along the falling direction of the waste straw bundle so as to guide the waste straw bundle in the falling direction under its own weight.

The discharging arms 9a, 9b are configured so that the discharging arms 9a, 9b on the plant head side act in advance of the discharging arms 9b on the tip side in the direction of the culm of the bundled bundle of waste straw. The structure is such that the attitude of the waste straw bundle is changed so that the stock side is located further back than the tip side of the machine.

[Another example]

In the above embodiment, two resistance projections 16 are provided, but one or three or more resistance projections 16 may be provided in the conveying direction of the holding and conveying device 3. Also, in the present invention, as the resistance projections 16, In other words, it is not limited to rod-shaped objects, but also curved plate objects, etc., which impart conveyance resistance to the conveyed and discharged straw bundle in a biting state, thereby cooperating with the locking action of the endless rotating belt 10. It suffices if the conveyed and discharged straw bundle can be rotated, and these are collectively referred to as resistance protrusions 16.

Note that although reference numerals are written in the claims section of the utility model registration for convenience of comparison with the drawings, the present invention is not limited to the structure of the attached drawings by such entry.

[Brief explanation of drawings]

The drawings illustrate an embodiment of the combine harvester of the invention,
Fig. 1 is a partially cutaway side view of the main part, Fig. 2 is a rear view, Fig. 3 is an explanatory diagram showing the operating state of the resistance protrusion,
FIG. 4 is a rear view of the main parts. 2... Binding device, 3... Clamping and conveying device, 10...
... Endless rotating band with protrusion, 11 ... Pincer rail, 1
2... Needle, 16... Resistance protrusion, 17... Regulating member, A... Starting end of clamping conveyance action, B... Binding position, C... Discharge port, R... Straight conveyance path.

Claims (1)

[Scope of utility model registration request] Binding device 2 for binding waste straw after threshing process
and a pinching and conveying device 3 that pinches and conveys the bundle of waste straw after the bundling process between an endless rotating belt 10 with projections and a pinching rail 11 and discharges it outside the machine in an upright position, the combine harvester comprising: At the end of the linear conveyance path R portion of the clamping and conveying device 3, and at the portion of the clamping rail 11 immediately in front of the waste straw bundle discharge port C where the clamping force is released,
A resistance protrusion 16 that protrudes into the conveyed and discharged straw bundle in a direction crossing the linear conveyance path R is attached, and the conveyed and discharged straw bundle is is configured to release while rotating, and the pinching and conveying action starting end A of the pinching and conveying device 3 is configured to pinch the strainer closer to the plant base than the binding device B in the direction of the culm of the waste straw bundle,
It is disposed closer to the base of the bundled waste straw than the needle 12 for supplying the binding string, and furthermore, in a position opposite to the terminal end of the linear conveyance path R, in the direction of release of the bundle of waste straw released in an autorotating state. In order to restrict the inertial movement of the waste straw bundle, it is provided with a contact part having a vertical width that contacts the middle part of the waste straw bundle in the culm direction, and the contact part is aligned along the falling direction of the waste straw bundle. A combine harvester characterized by being provided with a regulating member 17 configured to guide a bundle of waste straw in a falling direction by its own weight.