JP2006340664A - Discharged straw disposal device - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a discharged straw disposal device having a circular disk straw cutter connected to a rear end of a thresher in a manner openable by swinging around a vertical support at the tip end side and enabling light and easy opening and closure of the straw cutter. <P>SOLUTION: A rotary spindle 34 of a bed knife of a discharged straw cutter 7 is interlocked with a driving sprocket wound with a feed chain 2 in a manner separable in axial direction, and the driving sprocket is driven by the power transmitted from the rotary spindle 34 of the bed knife. A longitudinally extending chain guide 46 to slide and guide the feed chain 2 is placed at the outer side face of the thresher 1, the driving sprocket is supported at the rear end of the chain guide 46 in a freely rotatable manner and the chain guide 46 is openable by turning laterally outward around a vertical supporting point (q) at the front end of the guide 46. <P>COPYRIGHT: (C)2007,JPO&INPIT

Description

  The present invention relates to a waste straw processing unit in which a disc-shaped waste straw cutter is connected to a rear end of a threshing device mounted on a combine so as to be able to swing and swing around a longitudinal fulcrum on the tip side.

  As the waste wall processing unit having the above structure, the rotation support shaft of the discharge wall cutter and the drive sprocket around which the feed chain is wound are pin-coupled so as to be separable in the axial direction, and the drive sprocket is driven by the power from the rotation support shaft. A structure has been proposed in which a drive sprocket is rotatably supported on a free end portion of a spring basket attached to the outer side surface of the threshing device in a cantilevered manner (see, for example, Patent Document 1). .

According to this, when performing maintenance or cleaning from the rear of the threshing device, first, the belt linking of the threshing device and the draining cutter is released, and then the rotation support shaft of the draining cutter and the drive sprocket Release the pin connection, move the drive sprocket laterally outward while deflecting the spring rod laterally, and then separate the drive sprocket with the feed chain wound around it from the rotation support shaft laterally outward. The rear end of the threshing device and the exhaust wall cutter itself can be opened by swinging and swinging the exhaust wall cutter around the longitudinal fulcrum on the tip side.
JP 2004-166664 A

  In the above structure, the spring sprocket that supports the drive sprocket needs to have sufficient rigidity to support the weight of the drive sprocket and the weight at the rear of the feed chain, and a spring that is relatively thick and has high spring strength is used. It will be. For this reason, a large force is required to bend the spring rod when the drive sprocket is removed from the rotating spindle.

  Also, when the drive sprocket is removed from the rotating support shaft, the spring rod will bend and fall, so the feed chain can be used to connect the rotating support shaft of the exhaust wall cutter and the drive sprocket that have been returned to their original use position after maintenance work. It is necessary to lift the drive sprocket around which it is wound and align it with the rotating support shaft, and it is necessary to lift the drive sprocket and feed chain, and to touch the drive sprocket and feed chain directly. It becomes easy to get your hands dirty with lubricating oil.

  The present invention has been made paying attention to such points, and an object thereof is to make it easy to open and close the exhaust wall cutter.

The first invention is a waste wall processing unit connected to the rear end of a threshing device so that a disc-shaped waste wall cutter is swingably opened around a longitudinal fulcrum on the tip side,
The rotary support shaft of the exhaust wall cutter and the drive sprocket wound with a feed chain are linked and connected in a separable manner in the axial direction so that the drive sprocket is driven by power from the rotary support shaft,
A long chain guide is provided on the outer side surface of the threshing device before and after the feed chain is slidably guided, and the drive sprocket is supported on the rear end portion of the chain guide so as to be freely rotatable, and the chain guide is mounted on the front end side thereof. It is configured to be able to swing and open laterally outward about a longitudinal fulcrum.

  According to the above configuration, when performing maintenance or cleaning from the rear of the threshing device, first, the chain guide is vertically oriented in a state where the connection between the rotating support shaft of the draining cutter and the drive sprocket is released. By swinging laterally outward around the fulcrum, the drive sprocket with the feed chain wound thereon can be separated laterally outward from the rotating support shaft. Then, the rear end of the threshing device and the draining cutter itself can be opened by swinging and swinging the waste straw cutter that has been disengaged from the threshing device around its longitudinal fulcrum.

  After the maintenance work is completed, the waste wall cutter is returned and swung back to the original use position and connected and fixed to the threshing device, and then the chain guide that has been swung back and forth to the original position is returned to the original position. Then, the drive sprocket is interlocked and connected to the rotation support shaft. In this case, since the chain guide is highly rigid, even if the chain guide swings and opens, the position of the drive sprocket is unlikely to change downward, and a large force that lifts and supports the weight of the drive sprocket and feed chain. Therefore, the drive sprocket can be easily aligned with the rotation support shaft by swinging and returning the chain guide to the original position.

  Therefore, according to the first aspect of the present invention, the drive sprocket and the feed chain can be swing open and returned without touching the drive sprocket and the feed chain directly, and the exhaust wall cutter can be opened and closed with little fouling. It can be done lightly and easily.

According to a second invention, in the first invention,
The rotating support shaft and the drive sprocket are interlocked and connected to each other via a claw clutch.

  According to the above configuration, since the engagement is interlocked by simply abutting the rotary spindle and the drive sprocket, it is possible to switch between the interlocking state and the interlocking release state without requiring an operation such as insertion / extraction of the connecting pin. It will be excellent.

According to a third invention, in the first or second invention,
A lock mechanism for positioning and fixing the chain guide with respect to the waste wall cutter in the use position is provided.

  According to the above configuration, the lock mechanism cannot be locked unless the exhaust wall cutter and the chain guide are correctly set to the predetermined use positions, and there is no possibility of operating in an inappropriate return state.

According to a fourth invention, in the third invention,
The lock mechanism is composed of a connecting pin fixed to the exhaust wall cutter and a lock member with a handle attached to the rear part of the chain guide so as to be detachable from the connecting pin. In this manner, the engagement with the connecting pin is released.

  According to the above configuration, when the handle of the lock member is operated laterally outward, the lock member is first removed from the connecting pin, and the chain guide is swung around the front side by continuously operating the handle laterally outward. Therefore, it is only necessary to separate the drive sprocket from the rotating spindle.

A fifth invention is the invention according to any one of the first to fourth inventions,
The longitudinal fulcrum of the chain guide is provided on a support member supported so as to be able to swing laterally outward around a fulcrum along the longitudinal direction of the guide with respect to the threshing device.

  According to the above configuration, the feed chain wound around the chain guide can be retracted outward from the side surface of the threshing apparatus, which is convenient when performing maintenance of the handling chamber, maintenance of the periphery of the feed chain, and the like.

A sixth invention is the invention according to any one of the first to fifth inventions,
The rotating support shaft is a rotating support shaft of the receiving blade, and the rotating support shaft of the receiving blade is linked to the rotating support shaft of the cutting blade at a reduced speed, and the rotating support shaft of the cutting blade and each operating part of the threshing device are connected in common. The belt is wound around and interlocked with a transmission belt.

  According to the said structure, while the drive structure of a threshing apparatus and a waste straw cutter is simplified, the maintenance of a drive part also becomes easy.

  FIG. 1 shows a longitudinal side surface of a threshing apparatus 1 mounted on a self-decomposing combine. This threshing device 1 receives a harvested cereal rice cake in a lying down position that has been conveyed from a left reaping portion outside the figure with a feed chain 2 and inserts its head into a handling chamber 3 from the left in the figure to the right. The threshing process is carried out by the handling cylinder 4 that is pivotally supported in the handling chamber 3 so as to be driven to rotate, and the threshing processed product is sorted by the sorting section 5 below the handling chamber, and is carried out from the handling chamber 3 The waste straw after the threshing process is delivered from the feed chain 2 to the waste straw conveying device 6 and supplied to the waste straw cutter 7.

  The processed material that has been handled and threshed in the handling chamber 3 and separated from the cereal mash is first subjected to leakage sorting in the receiving net 8, and the processed material that has leaked through the receiving net 8 is dropped and supplied to the first half of the sorting unit 5. The processed material that has not leaked through the receiving net 8 is unloaded from the dust feed port 9 at the end of the handling chamber and is dropped and supplied to the front and rear intermediate portions of the sorting unit 5.

  The processed material dropped on the sorting unit 5 is supplied to a rocking sorting case 10 that is long in the front-rear direction, and the supplied processed material is rocked and conveyed toward the rear (right side in FIG. 1) while moving up and down two stages of front grain pans. 11a and 11b are used for differential density sorting, coarse sorting chaff sieve 12, fine sorting grain sieve 13, unraveling sorting rack 14, Strollac 15 and the like, and the front end of the sorting section. Wind selection processing is performed with a selection wind supplied from the tang 16 and auxiliary blower fan 17 provided in the section toward the upper rear. Further, the grain that has leaked from the Glen Sheave 13 is sorted and collected by the No. 1 recovery unit 18, and the second item that has leaked from the Strollac 15 is sorted and collected by the No. 2 recovery unit 19. Waste is discharged from the dust outlet 20 at the rear end of the sorting unit. Then, after the first product (grain) recovered by the first recovery unit 18 is laterally fed to the outside by the lateral feed screw 21, it is lifted by the screw type graining device 22 and is not shown in the figure. The second product charged in the tank and collected in the second collection unit 19 is laterally fed by the lateral feed screw 23 and then lifted by the screw type reduction device 24, and then the front part of the swing sorting case 10. The re-sorting process is received after being scattered.

  The auxiliary blower fan 17 is composed of a cross-flow fan, and supplies the sorting air to the stepped portions of the upper and lower two-stage front Glen pans 11a and 11b and the stepped portion of the lower front Glen pan 11b and the chaff sheave 12. Thus, it is configured such that light straw scraps in the processed material falling on the step are scattered and transferred backward in the early stage.

  A dust blower 25 made of a cross flow fan is placed horizontally behind the handling chamber 3 and at the rear upper part of the sorting unit 5 and is located below the waste transporter conveyance path. Dust and straw scraps blown out from 9 and dust dust and straw scraps blown up rearward of the sorting section 5 by the sorting wind are sucked into the dust blower 25 and forcibly discharged to the rear of the machine body. .

  As the waste wall cutter 7, a disc type waste wall cutter is used in which the receiving blade 31 and the cutting blade 32 are pivotally supported horizontally at a predetermined interval across the left and right cutter frames 30. A transport cover 33 for switching the waste outlet flow path is attached to the upper rear portion so as to be swingable up and down around the rear fulcrum a. As shown in FIG. 1, when the transport cover 33 is lifted to open the cutter entrance, the waste straw discharged from the waste straw transport device 6 is received in a sideways posture between the blade 31 and the cutting blade 32. In addition, when the conveyance cover 33 is tilted forward and the cutter inlet is closed, the waste straw can be discharged rearward along the upper surface of the conveyance cover 33 and discharged as a long straw. it can.

  The receiving blade 31 is configured by attaching disk blades 35 with a predetermined interval in the axial direction to a rotating support shaft 34 made of a hexagonal shaft horizontally supported across the left and right cutter frames 30, and a cutting blade 32 is A disk blade 37 is attached to a rotary support shaft 36 composed of a hexagonal shaft horizontally supported below and below the rotary support shaft 34 with a predetermined interval in the axial center direction, and both the rotary support shafts 34, 36 are gears 38. , 39 and the chain 40, the receiving blade 31 is driven at a fraction of the speed of the cutting blade 32 driven at high speed.

  As shown in FIG. 3, under the feed chain 2 in the threshing apparatus 1, there are a carrot shaft 16 a, a first lateral feed screw shaft 21 a, a second lateral feed screw shaft 23 a, and a rear portion of the swing sorting case 10. A swing drive shaft 41 and a dust blower shaft 25a projecting from each other are projected, and the shaft group and the rotation support shaft 36 of the cutting blade 32 are wound together in series by a common transmission belt 42. Has been. The engine shaft 16a serves as an input shaft in the sorting unit 5 to which engine power is transmitted, and the power transmitted to the engine shaft 16 is used to transmit the kita 16, the first transverse feed screw 21 and the second one. The screw 23, the swing sorting case 10, and the dust exhaust blower 25 are driven, and the exhaust wall cutter 7 is driven. The auxiliary blower fan 17 is driven by another transmission system.

  1, 3, and 4, the air guide case 16 b of the tang 16 has an exhaust port 27 that is opened and closed by a swingable lid plate 26, and the air outlet 27 exits the exhaust port 27. The wind is configured to be guided to the transmission space c between the lateral outer surface of the threshing device 1 and the transmission cover 29 via the duct 28. With such a configuration, straw scraps and dust that have been released from the cereals conveyed by the feed chain 2 and dropped into the transmission space c are scattered and discharged by the air blown from the duct 28.

  As shown in FIG. 7, a drive sprocket 45 wound around the rear portion of the feed chain 2 is linked and connected in a concentric manner to the rotation spindle 34 of the receiving blade 31, and is driven by low-speed rotational power extracted from the receiving blade 31. The feed chain 2 is driven synchronously.

  As shown in FIG. 2, the draining cutter 7 having the above-described configuration is connected and supported to the rear end portion of the threshing device 1 so as to be pivotable and swingable around the longitudinal fulcrum p on the tip side. By swinging and opening approximately 90 ° rearward, the inside of the exhaust wall cutter 7 is exposed greatly, and maintenance work such as cleaning and replacement of the disc blades 35 and 37 can be performed from a wide space. Further, the waste wall cutter 7 is largely swung open to the rear and the dust outlet 20 in the threshing apparatus 1 is greatly opened so that the swing sorting case 10 can be easily pulled out to the rear. become.

  When swinging the open / close cutter 7 as described above, the transmission belt 42 is removed from the pulley 36a provided on the rotation support shaft 36 of the cutting blade 32, and the rotation support shaft 34 of the receiving blade 31 and the feed chain 2 are removed. It is necessary to cancel the interlocking with, and the structure for that is configured as follows.

  As shown in FIG. 3, on the lateral outer side of the threshing device 1, a chain guide 46 made of a long square pipe material is provided before and after the feed chain 2 is slidably guided along the grain conveying path. The drive sprocket 45 is supported on the rear end yoke portion 46a of the chain guide 46 via a bearing 47 so as to freely rotate, and the drive sprocket 45 and the rotation support shaft 34 of the receiving blade 31 are connected to each other via a pawl clutch 48. The core is interlocked with the bite. The claw clutch 48 is configured to engage a claw 49a of a boss member 49 fixed to the end of the rotary support shaft 34 with a claw 45a formed on the outer end of the boss portion of the drive sprocket 45. By moving the drive sprocket 45 laterally outward, the claw clutch 48 is disengaged, and the linkage between the rotary support shaft 34 and the feed chain 2 is released.

  A fulcrum shaft 50 in a vertical orientation is connected and fixed to the front portion of the chain guide 46, and this fulcrum 50 is pivotally supported by a fulcrum bracket 51 mounted on the threshing device 1 so as to be swingable around a vertical fulcrum q. It is connected. Therefore, the drive sprocket 45 supported on the rear end portion of the guide can be separated from the rotation support shaft 34 by swinging the entire chain guide 46 laterally outward around the longitudinal support point q.

  As shown in FIGS. 7 and 8, a lock mechanism 55 for positioning and fixing the chain guide 46 with respect to the exhaust wall cutter 7 in the use position is provided between the exhaust wall cutter 7 and the rear end yoke portion 46a of the chain guide 46. It has been. The lock mechanism 55 includes a stay 56 projecting laterally on the lateral outer side of the cutter frame 30 in the exhaust wall cutter 7, a connection pin 57 fixed to the stay 56, and a hook-shaped lock member that swings and disengages from the connection pin 57. 58, and the lock member 58 is mounted on the rear end yoke portion 46a of the chain guide 46 via a bracket 59 so as to be swingable around a longitudinal fulcrum r.

  The stay 56 is inserted into a lateral through hole 60 formed in the rear end yoke portion 46a of the chain guide 46, and the chain guide 46 is inserted until the stay 56 is completely removed from the through hole 60 as shown in FIG. The exhaust wall cutter 7 cannot be swung back and swung unless it is moved laterally outward. Further, the stay 56 cannot be inserted into the through hole 60 unless the waste wall cutter 7 is in a predetermined use position with respect to the threshing device 1.

  The bracket 59, which is pivotally connected to the lock member 58, is formed with a guide groove 61 inwardly engaged with the connecting pin 57 from the lateral direction, and the chain guide 46 that is swung laterally outward is provided. When returning to the original position, the drive sprocket 45 is positioned and held concentrically with the rotation support shaft 34 by engaging the bracket 59 with the connecting pin 57 via the guide groove 61.

  A handle 58a is bent and connected to the lock member 58 in the rearward direction. When the handle 58a is pulled laterally outward, the lock member 58 is swung in the disengagement direction. By pulling in the direction, the chain guide 46 can be swung around the front longitudinal fulcrum q to separate the drive sprocket 45 from the rotating support shaft 34.

  As shown in FIGS. 4 and 10, the fulcrum bracket 51 that supports the chain guide 46 so as to be swingable around the longitudinal fulcrum q is mounted on the threshing device 1 so as to be swingable around the fulcrum b in the front-rear direction. It is connected to the upper part of the arm-shaped support member 63. This support member 63 is engaged and guided by an arc-shaped elongated hole 64 formed in the front side plate 1a of the threshing apparatus 1, and is supported so as to be able to swing outward in the body within a certain range. As shown, the support member 63 is engaged and held by the hook member 65 at the inward swing position. Further, when the hook member 65 is removed and the support member 63 is swung outward, the feed chain 2 can be retracted laterally outward together with the chain guide 46 as shown in FIG. It will be used when doing.

  As shown in FIG. 10, the threshing apparatus 1 is divided into an upper case 1U that supports the handling cylinder 4 and a lower case 1D that includes a sorting unit 5, and the upper case 1U is centered on the upper fulcrum s. By lifting and swinging upward, the handling chamber 3 can be opened and the receiving net 8 can be exposed, and the handling chamber 3 can be cleaned and the receiving net 8 can be easily cleaned and replaced. By removing 8, the upper part of the sorting unit 5 is opened so that cleaning and inspection and maintenance can be easily performed.

  [Other Examples]

  (1) The rotary support shaft 34 and the drive sprocket 45 can be linked and connected in a structure in which the boss portion of the drive sprocket 45 is externally fitted to the rotary support shaft 34 of the receiving blade 31 and pin-connected. The present invention may be applied between the rotary spindle 36 of the cutting blade 32 and the drive sprocket 45.

  (2) A self-locking structure in which the lock member 54 is automatically engaged with the connecting pin 53 when the lock member 54 is spring-biased in the engagement lock direction and the chain guide 46 is returned to the use position may be used. .

  (3) The connecting pin 53 for fixing the chain guide 46 to the use position may be provided on the threshing apparatus 1 side.

Longitudinal side view of threshing device Top view of waste wall cutter Side view of threshing device Front view of threshing device Side view of chain guide front support structure Side view showing feed chain rear support structure Plan view showing waste wall cutter drive structure Plan view of the exhaust wall cutter drive structure with the feed chain moved away Plan view showing feed chain and waste wall cutter drive structure Front view showing the handling room open

Explanation of symbols

DESCRIPTION OF SYMBOLS 1 Threshing apparatus 2 Feed chain 7 Waste wall cutter 31 Receiving blade 32 Cutting blade 34 Rotating spindle 36 Rotating spindle 42 Transmission belt 45 Drive sprocket 46 Chain guide 48 Claw clutch 55 Lock mechanism 57 Connection pin 58 Lock member b Support point p Vertical support point q Longitudinal fulcrum

Claims (6)

In the waste wall processing unit connected to the rear end of the threshing device so that the disc-shaped waste wall cutter is swingably opened around the longitudinal fulcrum on the tip side,
The rotary support shaft of the exhaust wall cutter and the drive sprocket wound with a feed chain are linked and connected in a separable manner in the axial direction so that the drive sprocket is driven by power from the rotary support shaft,
A long chain guide is provided on the outer side surface of the threshing device before and after the feed chain is slidably guided, and the drive sprocket is supported on the rear end portion of the chain guide so as to be freely rotatable, and the chain guide is mounted on the front end side thereof. An exhaust wall processing unit characterized by being configured to be capable of swinging and opening laterally outward about a longitudinal fulcrum.   The waste wall processing unit according to claim 1, wherein the rotary support shaft and the drive sprocket are connected to each other via a claw clutch so as to be separable.   The waste wall processing part of Claim 1 or 2 provided with the lock mechanism which positions and fixes the said chain guide with respect to the said waste wall cutter in a use position.   The lock mechanism is composed of a connecting pin fixed to the exhaust wall cutter and a lock member with a handle attached to the rear part of the chain guide so as to be detachable from the connecting pin. 4. The waste straw processing unit according to claim 3, wherein the engagement with the connecting pin is released by the operation of.   The longitudinal support point of the chain guide is provided on a support member supported so as to be swingable laterally outward around a support point along the longitudinal direction of the guide with respect to the threshing device. The waste straw processing part according to item.   The rotating support shaft is a rotating support shaft of the receiving blade, and the rotating support shaft of the receiving blade is decelerated in conjunction with the rotating support shaft of the cutting blade, and the rotating support shaft of the cutting blade and each operating part of the threshing device 6. The waste straw processing unit according to any one of claims 1 to 5, which is wound around and interlocked with a common transmission belt.

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