JP2005160317A - Apparatus for cutting waste straw - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To eliminate problems that the initial intake of waste straws is deteriorated when the amount of the waste straws fed to an apparatus for cutting the waste straws is extremely increased in the case of a change in reaping speed, or the like, in starting reaping or in the course of the reaping. <P>SOLUTION: This apparatus for cutting the waste straws is composed as follows. Low-speed rotating blades 21 and high-speed rotating blades 25 are transversely installed through bearings between a right and a left cutter side plates 10 and 10 and chopper rolls 31 are arranged oppositely to the low-speed rotating blades 21. A right and a left bearing bodies 32 and 32 for supporting chopper roll shafts 13 for freely rotatably and axially supporting the chopper rolls 31 are fixed to the right and left side plates 10 and 10. Grooves 32a and 32a for inserting ends of the chopper roll shafts 13 are formed in each of the right and left bearing bodies 32 and 32 and both ends of the chopper roll shafts 13 slidable in the grooves 32a are urged to the sides of the low-speed rotating blades 21 with set springs 33 and 33. Stoppers 34 for regulating slides of the chopper roll shafts 13 to the sides of the low-speed rotating blades 21 are installed. <P>COPYRIGHT: (C)2005,JPO&NCIPI

Description

  The present invention relates to an improvement of a waste cutting apparatus provided in a combine or the like.

  2. Description of the Related Art Conventionally, there is known a waste cutting device that is attached to a rear portion of a combine or the like and that cuts and discharges waste that has been transported by a transport device with a low-speed rotary blade and a high-speed rotary blade. In such a waste cutting apparatus, for example, as shown in Patent Document 1, a chopper roll is attached to improve the waste supply posture, and the distance between the chopper roll and the low-speed rotary blade is set as a spring. It regulates by such urging force. And it is going to improve the taking-in performance of waste by such a chopper roll.

Japanese Utility Model Publication No. 7-19235

However, in the conventional waste cutting device, a chopper roll is provided so that the distance between the chopper roll and the low-speed rotary blade can be adjusted according to the amount of waste supplied to the waste cutting device. In the following cases, there has been a problem that it is impossible to take advantage of the removal performance of the chopper roll.
If the amount of waste supplied to the waste cutting device becomes extremely large when the cutting speed is changed during the beginning of cutting or during cutting, the initial intake of waste will be worsened and the waste will become clogged. There was a problem such as. In addition, due to various conditions such as the weather at the time of cutting and varieties, the initial uptake of waste was worsened and clogging was likely to occur.

The problem to be solved by the present invention is as described above. Next, means for solving the problem will be described.
That is, in claim 1, a low-speed rotary blade and a high-speed rotary blade are horizontally mounted between the left and right side plates, a chopper roll is disposed opposite to the low-speed rotary blade, and the chopper roll is placed on the left and right side plates. The left and right support members that support the chopper roll shaft that is rotatably supported are fixed, and grooves for inserting the end portions of the chopper roll shaft are formed in the left and right support members, respectively, and the chopper is slidable in the grooves. In the reject cutting apparatus configured to urge both end portions of the roll shaft toward the low-speed rotary blade side by a set spring, a stopper is provided for restricting sliding of the chopper roll shaft toward the low-speed rotary blade side.

  According to a second aspect of the present invention, the stopper is rotatably attached to the left and right support members.

  According to a third aspect of the present invention, for each of the left and right stoppers, a set position where the stopper abuts the chopper roll shaft and restricts sliding of the chopper roll shaft, and the stopper does not abut the chopper roll shaft and the chopper roll shaft The release position that does not restrict the slide can be switched.

As effects of the present invention, the following effects can be obtained.
That is, according to the waste cutting apparatus as shown in claim 1, the chopper roll shaft is slid to the anti-low-speed rotary blade side by the stopper, and the gap between the chopper roll and the low-speed rotary blade is forcibly widened. If the cutting speed is changed during the beginning of cutting or during cutting, the initial excretion can be taken in well in response to various conditions such as the weather during harvesting and the variety. It is possible to smoothly guide to the cutting part without clogging and to perform an efficient cutting operation.

  According to the waste cutting apparatus as shown in claim 2, for example, by rotating only the stopper on the stock side having a larger mass than the tip side, the chopper roll on the stock side and the low-speed rotating blade It is possible to extend the interval and guide to the cutting part while aligning the waste. In this way, the interval between the chopper roll and the low-speed rotary blade can be set according to the situation.

  According to the reject cutting apparatus as described in claim 3, the chopper roll and the low-speed rotation according to the situation are performed by rotating only one or both of the left and right stoppers and switching between the release position and the set position. The distance between the blades can be set.

Next, the best mode for carrying out the invention will be described with reference to the accompanying drawings.
1 is a side view showing an embodiment of the waste cutting apparatus to which the present invention is applied, FIG. 2 is a plan view of the same, FIG. 3 is a side view showing the waste cutting apparatus when the stopper is switched to the set position, FIG. 4 is a diagram illustrating a case where the stopper is switched to the release position and a case where the stopper is switched to the set position.

  The waste cutting apparatus of the present invention is applied to, for example, a combine. The severing and cutting device 1 is disposed on the rear process side of the threshing device provided in the combine or the like, and is usually a rear part of the machine body and below the rear part of the sewage chain (not shown) that conveys the scouring material after threshing. Placed in. The waste conveyed to the waste cutting device 1 by this waste chain is cut by the waste cutting device 1 and released to the field.

  A switching cover 4 is disposed on the upper portion of the waste cutting apparatus 1. The fulcrum shafts 3, 3 disposed on both sides of the switching cover 4 are pivotally supported on the rear portions of the left and right cutter side plates 10, 10 at the rear of the machine body. Then, an operation arm is fixed to one end of the fulcrum shaft 3, the operation arm and an operation lever arranged in the vicinity of the driver's seat are connected via a wire or the like, and the switching cover 4 is rotated by operating the operation lever. To switch between excision cutting / non-cutting.

  Specifically, the switching cover 4 is rotated forward to switch to a state in which the upper portion of the evacuation / cutting device 1 is closed (a state indicated by a two-dot chain line in FIG. 1 and the like). It is not introduced into the switch but slides back on the switching cover 4 and falls to the field from the rear end without being cut. On the contrary, by switching the switching cover 4 in the vertical direction so that the upper portion of the waste cutting device 1 is opened (a state indicated by a solid line in FIG. 1 and the like), the waste is introduced into the waste cutting device 1. Then, it is dropped and cut between a low-speed rotary blade 21 and a chopper roll 31, which will be described later, and then discharged downward of the waste cutting apparatus 1. Reference numeral 8 denotes a sensor for detecting opening and closing of the switching cover 4.

  Between the left and right cutter side plates 10, 10, a high-speed rotary shaft 11 and a low-speed rotary shaft 12 are rotatably mounted in a horizontal direction through a bearing, and the low-speed rotary shaft 12 is higher than the high-speed rotary shaft 11. It is arranged in parallel to the rear position (position away from the waste chain) which is a high position. That is, the high-speed rotation shaft 11 and the low-speed rotation shaft 12 are disposed to face each other in the front-rear direction. Further, the chopper roll shaft 13 is horizontally mounted between the left and right cutter side plates 10 and 10 via bearing bodies 32 and 32. The chopper roll shaft 13 is disposed in front of and slightly above the low-speed rotation shaft 12 in parallel with the low-speed rotation shaft 12. A waste intake 6 is formed between the chopper roll shaft 13 and the low speed rotary shaft 12, and a waste cutting portion 7 is formed between the low speed rotary shaft 12 and the high speed rotary shaft 11. ing. The positions where the high-speed rotation shaft 11, the low-speed rotation shaft 12, and the chopper roll shaft 13 are arranged are not limited to the configuration shown in FIG. For example, the low speed rotating shaft may be disposed in front of the chopper roll shaft, and the high speed rotating shaft may be disposed below the chopper roll shaft.

One end (the left end in FIG. 2) of the high-speed rotating shaft 11 extends to the outside of one cutter side plate 10, and an input pulley 15 and a small-diameter gear 16 are fixed on the extended portion. Further, one end (the left end in FIG. 2) of the low-speed rotating shaft 12 is similarly extended to the outside of the cutter side plate 10, and a large-diameter gear 17 is fixed on the extended portion.
A belt (not shown) is wound around the input pulley 15 between the pulley on the output side. Further, the small diameter gear 16 and the large diameter gear 17 are arranged so as to mesh with each other. In this way, power is transmitted from the drive source (engine) via the input pulley 15 to rotate the high speed rotating shaft 11 and further transmitted via the small diameter gear 16 and the large diameter gear 17 to transmit the low speed rotating shaft 12. I try to rotate it. Therefore, the high speed rotating shaft 11 and the low speed rotating shaft 12 rotate in opposite directions.

Each of the low-speed rotary shaft 12 and the high-speed rotary shaft 11 is fixedly provided with a rotary cutting rotary blade.
On the low-speed rotating shaft 12, a plurality of low-speed rotating blades 21 · 21... For cutting and rejecting and star wheels 22 · 22. It is fixed. Note that the arrangement of the low-speed rotary blade 21 and the star wheel 22 on the low-speed rotary shaft 12 is not limited to an overall uniform arrangement as shown in FIG.

  The low-speed rotary blade 21 is formed in a disk shape having a large number of mountain-shaped irregularities (saw teeth) on its outer periphery. The star wheel 22 is formed to have a slightly smaller diameter than the low-speed rotary blade 21 and has a plurality of scratching protrusions 22a, 22a,. The star wheel 22 scrapes the waste sent to the intake port 6.

  On the high-speed rotary shaft 11, high-speed rotary blades 25, 25,... For cutting the waste, small-diameter star wheels 26, 26,. A plurality of sheets are fixed at intervals. In this case, one high-speed rotary blade 25 on the high-speed rotary shaft 11 is fixed between the small-diameter star wheels 26 or between the small-diameter star wheel 26 and the large-diameter star wheel 27. The arrangement of the high-speed rotary blade 25, the small-diameter star wheel 26, and the large-diameter star wheel 27 on the high-speed rotary shaft 11 is not limited to an overall uniform arrangement as shown in FIG. It can also be arranged.

  The high-speed rotary blade 25 is formed in a disk shape having a large number of mountain-shaped irregularities (saw teeth) on the outer periphery thereof. The small-diameter star wheel 26 is formed in a disk shape and has a smaller diameter than the high-speed rotary blade 25. The large-diameter star wheel 27 has a shape having a plurality (three in the present embodiment) of substantially triangular scribing protrusions 27a, 27a, and 27a on the outer periphery thereof. The outermost diameter portion of the scraping protrusion 27 a of the large-diameter star wheel 27 is formed larger than the diameter of the high-speed rotary blade 25. That is, in the side view, the top portion 27 b of the scraping protrusion 27 a protrudes outward from the high-speed rotary blade 25. And in the protrusion 27a, the front part of the rotation direction of the large diameter star wheel 27 is recessed from the top part 27b, and the recessed part 27c is formed. With the large-diameter star wheel 27 having such a shape, the low-speed rotating shaft 12 removes waste that is fed from the intake port 6 and tries to accumulate in a portion below the intake port 6 (region G shown in FIG. 3). It pushes to the side, and is surely sent to the cutting part 7. In addition, the evacuation is prevented from being carried around or wrapped around. Discharge blades 29 and 29 are fixed to both ends of the high-speed rotation shaft 11.

  The same number of the low-speed rotary blades 21 on the low-speed rotary shaft 12 and the high-speed rotary blades 25 on the high-speed rotary shaft 11 are provided. Further, the low-speed rotary blade 21 and the high-speed rotary blade 25 are arranged so as to be close to each other in a plan view and a front view, and are arranged so that a part of each outer periphery overlaps in a side view. The low-speed rotary blade 21 and the high-speed rotary blade 25 form the waste cutting portion 7, and the cutting portion 7 cuts the waste sent from the intake port 6.

  On the chopper roll shaft 13, a chopper roll 31 for improving the supply attitude of the waste is rotatably supported through a bearing. The chopper roll 31 is formed by sticking synthetic resin or the like on the outer periphery of a tubular member, and the outer peripheral surface thereof is configured to be slippery. The chopper roll 31 is arranged at a predetermined interval from the low-speed rotary blade 21 in a side view, and the chopper roll 31 and the low-speed rotary blade 21 form a waste intake 6.

  The distance between the chopper roll 31 and the low-speed rotary blade 21 can be adjusted according to the amount of waste supplied into the waste cutting device 1, that is, the amount of waste dropped into the intake port 6. ing. That is, the distance between the chopper roll shaft 13 and the low speed rotating shaft 12 can be adjusted.

Here, a mechanism for adjusting the distance between the chopper roll 31 and the low-speed rotary blade 21 will be described.
The chopper roll shaft 13 is supported between bearing bodies 32 and 32 as left and right support members fixed to the left and right cutter side plates 10 and 10. Grooves (or long holes) 32a and 32a for inserting and supporting the chopper roll shaft 13 are formed in the left and right bearing bodies 32 and 32, respectively. The width in the vertical direction of the groove 32 a is formed to be substantially the same as the diameter of the chopper roll shaft 13, and the width in the front-rear direction is longer than the width in the vertical direction. For this reason, the chopper roll shaft 13 supported by the bearing body 32 can slide back and forth along the groove 32a.

  In addition, set springs 33 and 33 having a “H” shape in a side view are attached to both left and right ends of the front frame 5 of the rejection cutting apparatus 1, and the tip ends of the set springs 33 and 33 are both ends of the chopper roll shaft 13. It touches the part. At this time, the set spring 33 is in contact with a portion inside the portion supported by the bearing body 32 outside the portion where the chopper roll 31 is pivotally supported at both ends of the chopper roll shaft 13. . The urging force of the set spring 33 acts in a direction to push the chopper roll shaft 13 toward the low-speed rotation shaft 12 side (rearward). For this reason, the forward slide of the chopper roll shaft 13 is restricted. The shape of the set spring 33 is not limited as long as it restricts the forward sliding of the chopper roll shaft 13 and does not hinder the rotation of the chopper roll 31. For example, it may be a reverse “he” shape in a side view.

  Such a chopper roll 31 is rotated by the flow of waste, so that the waste introduced into the intake port 6 is guided downward. At this time, the chopper roll shaft 13 (chopper roll 31) slides back and forth according to the amount of waste discharged into the intake port 6. That is, the chopper roll 31 rotates with the dropping of the waste and rotates.

  When the amount of evacuation increases or when there is a volume, such as the stockholder side, the chopper roll 31 moves back along the groove 32a against the urging force of the set spring 33 (frontward). When the distance between the chopper roll 31 and the low-speed rotary blade 21 is widened, and the amount of waste is reduced, or when there is no volume as in the tip, the set spring 33 is attached. The power wins and the chopper roll 31 slides back along the groove 32a, and the distance between the chopper roll 31 and the low-speed rotary blade 21 is narrowed. In this way, the chopper roll 31 always feeds the waste to the low-speed rotary blade 21 side as a whole, that is, improves the posture of the waste to be fed to the cutting portion 7 and improves the efficiency of the cutting portion 7. It cuts well.

In the present embodiment, stoppers 34 and 34 for forcibly increasing the distance between the chopper roll 31 and the low-speed rotary blade 21 are added to the mechanism for adjusting the distance between the chopper roll 31 and the low-speed rotary blade 21 as described above. It has a configuration. This will be described with reference to FIG. 1, FIG. 3, and FIG.
The left and right stoppers 34 and 34 are attached to the left and right bearing bodies 32 and 32 via rotation shafts 35 and 35, respectively. The rotating shaft 35 is provided behind the groove 32 a in the bearing body 32. The stopper 34 is a substantially fan-shaped member in a side view, and a contact portion 34 a that contacts the upper surface of the bearing body 32 when the stopper 34 is set is bent to the side (outside) on one side forming the sector. A concave portion 34b that protrudes and forms a sector shape is formed in contact with and engaging with the chopper roll shaft 13 when the stopper 34 is set.

The left and right stoppers 34 and 34 can be rotated about the rotation shafts 35 and 35, respectively, and the release position (position shown in FIG. 1) and the set position (by the rotation operation of the stoppers 34 and 34) ( The position shown in FIG. 3 is switched. When the stopper 34 is rotated and switched to the release position, the stopper 34 does not come into contact with the chopper roll shaft 13, and the chopper roll shaft 13 is driven by the urging force of the set spring 33 (the low speed rotation shaft). 12 side).
On the other hand, when the stopper 34 is rotated and switched to the set position, the contact portion 34a of the stopper 34 contacts the upper surface of the bearing body 32, and further rotation of the stopper 34 is restricted. The recess 34b comes into contact with the chopper roll shaft 13. As a result, the slide toward the low-speed rotary blade 21 is restricted by the stopper 34 against the urging force of the set spring 33, and the distance between the chopper roll 31 and the low-speed rotary blade 21 is compared with the case where it is switched to the release position. Thus, the distance is forcibly expanded by a distance L shown in FIG. The concave portion 34 b is shaped to match the outer periphery of the chopper roll shaft 13, the center of the chopper roll shaft 13 is disposed at a position lower than the center of the rotating shaft 35, and the contact portion 34 a contacts the upper surface of the bearing body 32. Therefore, even when the chopper roll 31 slides back and forth, the stopper 34 is difficult to come off. Moreover, since the stopper 34 is configured in a fan shape, the lower side slides while pushing the chopper roll shaft 13 forward by pushing the contact portion 34a downward, and can be rotated to the set position.

The rotation operation of the left and right stoppers 34, 34 is configured to manually rotate. However, the stopper 34 is fixed to the rotation shaft 35, and the rotation shaft 35 protrudes outward from the cutter side plate 10. Also, a lever may be fixed on the outer rotation shaft 35, and the lever may be rotated to operate the release position and the set position.
Further, the left and right stoppers 34, 34 can be connected to a switching lever provided in the vicinity of the driver's seat via an arm or a wire (not shown) and operated by operating the switching lever. When switching the stopper 34 from the release position to the set position, the chopper roll shaft 13 is slid forward by a distance slightly longer than the distance L, and switching is performed in this state. Further, when switching from the set position to the release position, the chopper roll shaft 13 is slid forward by a slight distance, and switching is performed in this state. For this purpose, the left and right stoppers 34 and 34 are rotated by the switching lever, and the chopper roll shaft 13 is slid forward. Note that the left and right stoppers 34 and 34 may be rotated at the same time, or only one of them may be rotated.

In such a configuration, when the stopper 34 is switched to the release position, the normal cutting operation as described above is performed by the waste cutting apparatus 1.
In other words, the chopper roll 31 slides back and forth according to the amount of waste supplied to the waste cutting device 1, that is, the amount of waste supplied to the intake port 6. Specifically, when the amount of waste increases or when there is a volume like the stockholder side, the chopper roll 31 moves along the groove 32a against the urging force of the set spring 33 by that amount. When the distance between the chopper roll 31 and the low-speed rotary blade 21 is widened by retreating (sliding forward), conversely, when the amount of evacuation is reduced or when there is no volume like the tip side The urging force of the set spring 33 wins and the chopper roll 31 slides back along the groove 32a, and the distance between the chopper roll 31 and the low-speed rotary blade 21 is narrowed. In this way, the chopper roll 31 always feeds the waste into the cutting part 7 so as to be entirely pressed against the low-speed rotary blade 21 so that the cutting part 7 can cut efficiently.

  However, if the amount of waste supplied to the waste cutting device 1 becomes extremely large when the cutting speed is changed in the middle of cutting or during cutting, the initial take-up of waste in the vicinity of the intake 6 is poor. As a result, there were problems such as clogging. Therefore, the problem is solved as follows by switching the stopper 34 to the set position.

  By switching the stopper 34 to the set position, the chopper roll shaft 13 moves backward by a distance L (slides forward), and the distance between the chopper roll 31 and the low-speed rotary blade 21 is forcibly increased by the distance L. Thus, by forcibly widening the distance between the chopper roll 31 and the low-speed rotary blade 21 by the stopper 34, for example, when the cutting speed is changed during the start of cutting or during cutting, In response to various conditions such as the above, it is possible to satisfactorily take in the initial waste, smoothly guide the cutting part 7 without clogging the waste, and perform efficient cutting work Can do.

  In addition, by switching only one of the left and right stoppers 34 and 34 to switch to the set position, it is possible to set an interval according to the situation. For example, by rotating only the stopper 34 on the stock side that has a larger mass than the tip side, the interval between the chopper roll 31 on the stock side and the low-speed rotary blade 21 is widened, and the cut portion 7 is made while aligning the waste. I can guide you.

The side view which shows one Example of the exclusion cutting device to which this invention is applied. FIG. The side view which shows a rejection cutting device when a stopper is switched to a setting position. The figure which shows the case where a stopper is switched to a release position, and the case where it is switched to a set position.

Explanation of symbols

DESCRIPTION OF SYMBOLS 1 Waste cutting device 10 Cutter side board 13 Chopper roll axis | shaft 21 Low speed rotary blade 25 High speed rotary blade 31 Chopper roll 32 Bearing body 32a Groove 33 Set spring 34 Stopper

Claims (3)

Between the left and right side plates, a low-speed rotary blade and a high-speed rotary blade are laid across the bearing, and a chopper roll is disposed opposite the low-speed rotary blade,
The left and right support members that support the chopper roll shaft that rotatably supports the chopper roll are fixed to the left and right side plates,
A groove for inserting the end of the chopper roll shaft is formed in each of the left and right support members,
In the rejection cutting apparatus configured to urge both ends of the chopper roll shaft slidable in the groove toward the low-speed rotary blade side by a set spring,
A rejection cutting apparatus comprising a stopper for restricting sliding of the chopper roll shaft toward the low-speed rotary blade.   2. The apparatus according to claim 1, wherein the stopper is rotatably attached to the left and right support members.   For each of the left and right stoppers, a set position where the stopper abuts the chopper roll shaft and restricts the slide of the chopper roll shaft, and a release position where the stopper does not abut the chopper roll shaft and restricts the chopper roll shaft slide. And the excision cutting device according to claim 2, wherein:

Images