JP5027640B2 - Combine waste wall cutter - Google Patents

Description

  The present invention relates to a draining cutter that is connected to a rear portion of a threshing apparatus mounted on a self-decomposing combine.

The waste wall cutter is configured such that the rotary receiving blade and the rotary cutting blade are pivotally opposed to each other horizontally at predetermined intervals across the left and right case sidewalls in the cutter case, and are driven to rotate inward with respect to each other. A guide cover that guides the waste straw supplied from the front upper side is provided so that it can swing around a horizontal fulcrum at the upper rear of the cutter case, and the guide cover is opened by opening the cutter inlet so that the waste straw is inside the cutter case. Disc-shaped draining cutters that are configured to be swingable by switching between a shredding attitude that leads to the direction and a discharging attitude that closes the cutter inlet and guides the exhaust wall to the rear of the machine body are often used (for example, Patent Document 1).
JP-A-11-39

  In the waste straw cutter configured as described above, when the sharpness is reduced due to wear of the rotary cutting blade or the like, the waste straw clogging occurs at the cutting portion of the rotary receiving blade and the rotary cutting blade, and the subsequent waste straw May rise to the cutter entrance. In such a case, if the supply of the waste straw is continued without noticing the occurrence of the clogging of the waste straw, the waste straw raised at the cutter inlet strongly presses and deforms the guide cover standing in the shredding posture, There is also a possibility that the support shaft of the rotary cutting blade or the rotary receiving blade is curved and deformed due to an excessive load pressure generated at the location where the cracker is clogged.

In order to suppress the occurrence of such problems, it is electrically detected using a limit switch or the like that the pressing force acting on the guide cover in the shredding posture has become larger than the setting, and the detection operation is Control means for automatically stopping the engine based on the above and stopping the supply of the subsequent exhaust straw is also provided.
In order to properly function the control means for stopping the supply of waste straw based on the occurrence of waste clogging, it is necessary in advance to prevent electrical trouble such as sensor failure, wiring connection failure or disconnection. It was necessary to perform inspection and maintenance and adjustments, which increased the management burden on the user.

  The present invention has been made by paying attention to such points, and even if the waste straw rises at the cutter inlet due to the occurrence of waste straw clogging, the guide cover is deformed or the load pressure is excessive. It aims to be able to avoid becoming.

According to a first aspect of the present invention, a guide cover for guiding a discharge wall supplied from the upper front is provided so as to be swingable around a lateral fulcrum at the upper rear of the cutter case, and the guide cover is discharged by opening the cutter inlet. In a combined drain wall cutter configured to be swingable by switching between a shredding attitude for guiding the wall to the inside of the cutter case and a discharge attitude for closing the cutter inlet and guiding the drain wall to the rear of the machine body,
A posture holding mechanism for holding the guide cover in the shredding posture ;
The posture holding mechanism is configured to engage an engagement member fixed to the guide cover with an engaged member fixed to the cutter case and hold the shredding posture, and more than a setting from the front. When the external force acts on the guide cover, at least one of the engaging member and the engaged member is elastically deformed to disengage the both , allowing the guide cover to swing backward. It is characterized by being comprised.

According to the above-described configuration, in the state where the drainage shredder is cut, the shattering site is clogged, and the subsequent drainer rises above the cutter entrance, and a large pressing force is applied to the guide cover in the shredding posture from the front. When the action is applied, the posture holding by the posture holding mechanism is automatically released, the guide cover is retracted to the rear open position, and the overflow of the discharge wall is allowed to the rear.
Therefore, according to the first aspect of the present invention, it is possible to prevent the guide cover from being deformed and the load pressure from becoming excessive even if the exhaust straw rises at the cutter inlet due to the occurrence of the exhaust straw clogging.

Further, according to the above-described configuration, the guide cover in the discharge wall shredding mode is securely positioned and held in a predetermined shredding posture by the engagement between the engaging member and the engaged member, and the supplied waste wall is removed. Smooth shredding can be promoted by accurately guiding to the cutter entrance. When an excessive pressing force due to the occurrence of clogging of the discharge wall acts on the guide cover, the engagement member and the engaged member are disengaged, the guide cover is retracted to the rear open position, and the discharge wall overflows backward. Is acceptable.
According to a second invention, in the first invention,
The engaged member is provided in a position corresponding to the engaging member when the guide cover is in the shredding posture in the cutter case,
In the posture holding mechanism, when at least one of the engaging member and the engaged member is elastically deformed and the engagement of both is released, the guide cover in the shredding posture is in the discharging posture. It is comprised so that rocking | fluctuation to is permitted.
According to a third invention, in the first or second invention,
The engaging member is provided when the engaging member is provided at a lateral end of the guide cover and the engaged member is held in the shredding posture of the cutter case. Is provided at a position corresponding to.
4th invention is the invention in any one of said 1st-3rd,
When an upper cover that covers the waste straw conveying device above the cutter entrance from above and a rear cover that covers the waste straw conveying device from the rear are provided, and the guide cover swings backward from the shredding posture. Further, the swing side end portion is configured to be swingable until at least the rear end portion of the rear cover is positioned on the rear side.
A fifth invention is the invention according to any one of the first to fourth inventions,
When the guide cover swings backward from the shredding posture, the guide cover is configured to be swingable to a position corresponding to the same height as the upper end of the cutter case. It is.
According to a sixth invention, in any one of the first to fifth inventions, a stopper is provided in a state protruding from the side wall portion of the cutter case at a position corresponding to the rear side of the swing fulcrum of the guide cover. The guide cover is configured such that when the guide cover swings backward from the shredding posture, the guide cover abuts against the stopper and further swinging is restricted.

A seventh invention is the invention according to any one of the first to sixth inventions,
Detection means for detecting that the guide cover swings backward from the shredding posture is provided.

  According to the above configuration, it is possible to recognize the occurrence of clogging of the exhaust wall by detecting that the guide cover swings backward from the shredding posture, and take appropriate measures such as notification or stopping the supply of the exhaust wall. Further, it becomes possible to prevent further clogging of the exhaust straw from proceeding further.

In an eighth invention according to the seventh invention,
Control means for automatically stopping the supply of the waste straw based on the detection operation of the detection means is provided.

  According to the above configuration, when the occurrence of the exhaust wall clogging is recognized from the detection that the guide cover has swung backward from the shredding posture, the supply of the subsequent exhaust wall is automatically stopped and the strong exhaust wall is stopped. The development of clogging can be prevented, and the subsequent removal of the clogging of the waste straw can be easily performed.

According to a ninth invention, in any one of the first to eighth inventions,
An upper cover and a rear cover are provided to cover the waste straw conveying device above the cutter entrance from above and from behind, and the rear cover is allowed to swing backward by applying an external force greater than the setting from the front. It is comprised as follows.

  According to the above configuration, the guide cover not only swings backward and opens automatically, but also the rear cover automatically opens and swings, even if the waste straw rises greatly above the cutter inlet due to the occurrence of waste straw clogging. As a result, it is possible to promote the overflow of the discharge wall to the rear, and to prevent the guide cover and the rear cover from being damaged or deformed.

  FIG. 1 shows an overall side view of a self-removing combine. In this combine, a cutting unit 3 is connected to a front part of a traveling machine body 2 including a pair of left and right crawler traveling devices 1 so as to be able to swing up and down, and a grain recovery tank with a threshing device 4 and an unloader is attached to the traveling machine body 2. 5 is mounted in parallel on the left and right, a driving unit 6 including a driving unit is provided in front of the grain collection tank 5, and a draining cutter 7 is disposed behind the threshing device 4, and the draining cutter 7 is configured to perform draining after threshing. It has a structure in which a waste straw conveying device 8 for feeding a straw is provided.

  The mowing unit 3 includes a pair of left and right pulling devices 9 for raising the planted culm to a predetermined cutting posture, a clipper-type mowing device 10 for cutting the raised planted culm, and cutting the harvested culm. After merging in the middle of the width, a cereal conveyor device 12 that feeds the feed chain 11 on the left side outward of the threshing device 4 in a sideways posture is provided.

  As shown in FIG. 2, the waste straw cutter 7 is horizontally opposed to the rotary receiving blade 14 and the rotary cutting blade 15 across the left and right case side walls 13a of the cutter case 13 opened vertically. A disc-type waste wall cutter configured to be pivotally supported and rotated inward from each other is used. A guide cover 16 for switching the outlet wall flow path is disposed at the upper rear portion of the cutter case 13 so as to swing up and down around the rear fulcrum q.

  By holding the guide cover 16 in the chopping posture (a) in which the guide cover 16 is erected and swinging, the cutter inlet K is opened, so that the waste straw discharged and supplied from the waste straw transporting device 8 can be used as the rotary receiving blade 14 and the rotary cutting blade. 15 can be supplied in a sideways posture and shredded, and as shown by the phantom line in FIG. 2, the guide cover 16 is held in a release posture (b) that is tilted forward to enter the cutter. By closing K, the waste straw can flow backward along the upper surface of the guide cover 16 and can be discharged as a long straw.

  As shown in FIGS. 3 to 5, the guide cover 16 is held in a shredding posture (a) by a posture holding mechanism 17 provided at one lateral end (left end in this example). ing. The posture holding mechanism 17 includes an engaging member 18 made of a leaf spring material provided at one lateral end of the guide cover 16 and an engaged member made of a bearing that is pivotally fixed to the inner surface of the left side wall 13a of the cutter case 13. The curved recess 18a formed on the end side of the engaging member 18 is engaged with the engaged member 19 from above to hold the guide cover 16 in the shredding posture (a). It is configured.

  When an external force more than the setting from the front acts on the guide cover 16 held in the shredding posture (a), the engagement member 18 made of a leaf spring is twisted and elastically deformed to be disengaged from the engaged member 19, FIG. As shown in FIG. 4, the guide cover 16 swings rearward and retracts to an open position (c) that contacts the stopper pin 20 protruding from the inner surface of the case side wall 13a.

  When the guide cover 16 in the shredding posture (a) is strongly pushed forward, the engaging member 18 is twisted and elastically deformed to be disengaged from the engaged member 19 and switched to the discharging posture (b). it can. As shown in FIG. 4, the left end side of the guide cover 16 is engaged when the guide cover 16 swings between the shredding posture (a) and the discharging posture (b). A notch 21 that allows passage of the member 19 is formed.

  As shown in FIGS. 7 and 8, the right end of the rotation support shaft 16a provided at the base end of the guide cover 16 is provided so as to project outward from the right wall 13b of the cutter case 13, and this rotation support shaft 16a. A cam member 22 is fixed to the protruding portion. On the other hand, a limit switch 23 that is pressed by the cam member 22 is disposed outside the case side wall 13b. As shown in FIG. 7, when the guide cover 16 is in the shredding position (a) and the discharging position (b), the limit switch 23 is pressed by the cam member 22, and as shown in FIG. When the swaying swings backward from the shredding posture (a), the pressing of the limit switch 23 by the cam member 22 is released.

  The limit switch 23 is linked to an automatic engine stop control device. When it is detected that the guide cover 16 swings backward from the shredding posture (a), the engine is automatically stopped. It has become.

  As shown in FIG. 2 and FIG. 3, an upper cover 25 that covers the rear part of the waste straw transporting device 8 from above and from both the left and right sides, and a rear cover 26 that covers the waste straw transporting device 8 from the rear are provided. The rear cover 26 is supported by the upper cover 25 so as to swing up and down around the fulcrum r of the front end portion, and is held in a rear cover posture by a lock mechanism 27 provided at one lateral end (left end in the figure). Has been. The lock mechanism 27 is configured to engage a lock piece 28 made of a leaf spring provided on the rear cover 26 with a tapered locking pin 29 provided on the side wall of the upper cover 25, and the rear cover 26 from the front. When an external force exceeding this setting is applied, the lock piece 28 is released from the tapered locking pin 29 while being elastically deformed, and the rear cover 26 is allowed to swing backward.

  The waste straw cutter 7 of the present invention is configured as described above, and in the waste straw shredding state, waste shatter clogging occurs at the shredded site, and the subsequent waste straw rises above the cutter inlet K, and the shredding posture When a large pressing force is applied to the guide cover 16 in (a) from the front, the posture holding mechanism 17 automatically releases the posture holding, and the guide cover 16 is retracted to the rear open position (c), so Backward overflow is allowed. When the bulge of the discharge wall is particularly large, the rear cover 26 is also automatically opened upward and swinging by the pressing force of the discharge wall, and further the overflow of the discharge wall becomes easy.

  When the guide cover 16 swings backward from the shredding posture (a), the limit switch 23 detects it and the engine automatic control is executed to stop the driving, stop the driving of the cutting unit 3, and the threshing device 4. The drive stop and the drive stop of the waste straw conveying device 8 and the waste straw cutter 7 linked to the threshing device 4 are stopped, the supply of the subsequent waste straw is cut off, and the progress of the waste straw jam in the waste straw cutter 7 is progressed. Be blocked.

[Other Examples]
(1) When it is detected that the guide cover 16 swings backward from the shredding posture (a), the main clutch that governs the power interruption of the traveling system and the cutting unit drive system, and the power interruption to the threshing device 4 The threshing clutch that automatically controls the stop of the driving, the driving of the mowing unit 3, the driving of the threshing device 4, and the waste straw conveying device 8 and the waste straw cutter 7 linked to the threshing device 4. It is also possible to implement such a configuration that the supply of the waste straw to the waste straw cutter 7 is stopped without stopping the driving and stopping the engine.

  (2) A cylinder-type cutter can be used as the exhaust wall cutter 7.

Side view of self-removing combine Longitudinal left side view of waste wall cutter Longitudinal right side view of waste wall cutter Rear view of waste wall cutter Rear view of posture holding mechanism Rear view showing the right end side of the guide cover Right side view showing the main part of the guide cover in the shredding position Right side view showing the main part with the guide cover swinging to the open position Cross-sectional plan view showing the rear cover locking mechanism

13 Cutter case 16 Guide cover 17 Attitude holding mechanism 18 Engaging member 19 Engaged member 25 Upper cover 26 Rear cover a Shredding attitude b Release attitude K Cutter inlet q Lateral fulcrum

Claims (9)

A guide cover that guides the drainer supplied from the upper front is provided so as to be swingable around a horizontal fulcrum at the upper rear of the cutter case, and the guide cover is opened by opening the cutter inlet to remove the drainer of the cutter case. In a combine draining cutter configured to be swingable by switching to a shredding attitude leading inward and a discharging attitude that closes the cutter inlet and guides the exhaust straw to the rear of the fuselage,
A posture holding mechanism for holding the guide cover in the shredding posture ;
The posture holding mechanism is configured to engage an engagement member fixed to the guide cover with an engaged member fixed to the cutter case and hold the shredding posture, and more than a setting from the front. by an external force acts on the guide cover, the engaging member and the at least one of the engaging member is released engagement therebetween by elastic deformation, allows the swing to the rear of the guide cover Combined waste wall cutter configured to do. The engaged member is provided in a position corresponding to the engaging member when the guide cover is in the shredding posture in the cutter case,
In the posture holding mechanism, when at least one of the engaging member and the engaged member is elastically deformed and the engagement of both is released, the guide cover in the shredding posture is in the discharging posture. 2. The combine drainer cutter according to claim 1, wherein the combiner is configured to allow rocking to the right. The engaging member is provided when the engaging member is provided at a lateral end of the guide cover and the engaged member is held in the shredding posture of the cutter case. The combine waste wall cutter according to claim 1 or 2 provided at a position corresponding to . An upper cover that covers the waste straw transporting device above the cutter entrance from above, and a rear cover that covers the waste straw transporting device from behind,
When the guide cover swings backward from the shredding posture, the guide cover is configured to be swingable until the swing side end portion is located at the rear side of at least the rear end portion of the rear cover. Combined waste straw cutter according to any one of claims 1 to 3 . When the guide cover swings backward from the shredding posture, the swing-side end portion is configured to be swingable to a position corresponding to the same height as the upper end portion of the cutter case. Item 5. A combine drainer cutter according to any one of Items 1 to 4. A stopper is provided in a state of protruding from the side wall of the cutter case at a position corresponding to the rear side of the swing fulcrum of the guide cover,
The said guide cover is comprised so that the rocking | fluctuation beyond it may be controlled by contact | abutting to the said stopper, when rock | fluctuating back from the said cutting | disconnection attitude | position. Combined waste straw cutter according to item. The combine drainer cutter according to any one of claims 1 to 6, further comprising detection means for detecting that the guide cover swings backward from the shredding posture. 8. The combine drainer cutter according to claim 7, further comprising a control unit that automatically stops the supply of the drainer based on the detection operation of the detector. An upper cover and a rear cover are provided to cover the waste straw conveying device above the cutter entrance from above and from the rear, and the rear cover is allowed to swing backward by applying an external force greater than the setting from the front. The combine waste wall cutter according to any one of claims 1 to 8 , which is configured to perform.

Images