JP4530861B2 - Combine pre-processing section - Google Patents

Description

  The present invention relates to a combine pre-processing unit including a plurality of star wheels.

  Conventionally, a plurality of star wheels are pivotally supported in the left-right direction, and a stock transporter that supports and transports the stock source side of the cereal scraped by the star foil is provided on the left and right, respectively, A pre-processing unit for a combine in which each stock transporter is driven by a plurality of driving units is known (see, for example, Patent Document 1).

The said pre-processing part is 6 cuttings, and six star wheels are provided. Two star wheels on the left side, two star wheels at the center, and two star wheels on the right side are arranged to be engaged with each other. Each of the three sets of star wheels is driven by a separate driving unit.
Japanese Patent No. 3563005 (FIGS. 7 and 8)

  From the relationship between the distance between the planting strips and the full width of the aircraft, the pretreatment unit cannot separate all adjacent sets of adjacent star wheels in plan view. It is necessary to overlap at least one set of adjacent star wheels in a plan view. In the embodiment of the above-mentioned patent document, the second and third star wheels from the right are separated so as not to overlap in plan view, but the second and third star wheels from the left overlap in plan view. .

  Since the second and third star wheels from the left are different sets of star wheels, they need to have different heights so as not to interfere with driving. For this reason, the two star wheels in the left group and the two star wheels in the center group are different in height. If the height of the starfoil is different, the rake position (height) in the cereals will be different, and when the squeezed pestle joins, the posture of the cereals will vary, which may adversely affect threshing There is a problem that there is.

The combine pretreatment unit of the present invention for solving the above problems is provided with a plurality of star wheels 18 pivotally supported in the left and right direction in the combine pretreatment unit 1, and the cereal squeezed by the star wheel 18 The stock transporters 19L, 19R, and 19C that support and transport the stock stock side are provided at the left and right and the center, respectively, and each star wheel 18 and each stock transporter 19L, 19R, and 19C are driven by a plurality of driving units. In the pretreatment section, the other outermost star wheels 18L, 18B, 18C, and 18D except for the outermost star wheel 18R on either side and the star hole 18A adjacent to the star wheel 18R are continuously meshed and arranged. The outermost star wheel side stock transporter 19L or the center stock that is driven by the predetermined one drive unit 31 or 41 and continuously meshed The Okukarada 19C driven by different other drive unit 41 or 31 and the drive unit 31 or 41 of the star wheel 18, the other star wheel 18L, 18B, 18C, different other than the drive unit 31 or 41 of 18D The stock transporter 19C or 19L driven by the drive unit 41 or 31 is configured by winding a chain between the rotationally driven drive wheel 29C or 29L and the driven wheel 28C or 28L, and the driven wheel 28C or 28L. It is characterized in that supported so as to freely rotate freely relative to the star wheel 18C or 18L and star wheel 18C or 18L coaxially.

  According to the structure of the present invention configured as described above, the outermost star wheel side stock former transport body or the central stock base transport body that are continuously meshed with each other is different from the star wheel drive section. Therefore, a load from the stock transporter is not applied to the star wheels that are continuously meshed with each other.

  For this reason, it is possible to stably carry out the stock transportation of the cereal by the stock transportation body, and further simplify the transmission system of the driving force. Further, the strength of the star wheel can be lowered by reducing the load applied to the star wheel, and the rotational driving force of the star wheel can be reduced. Thereby, there is an advantage that the cost of the star wheel itself and the cost of the transmission system can be reduced and simplified.

  Moreover, since all star foils can be arranged at the same height, the position (height) of the scum of the cereals by the star foil is the same, and the posture of the cereals when the squeezed cereals join together Have the advantage that they can be stably arranged and the threshing operation can be performed efficiently.

  On the other hand, the stock transporter driven by another driving unit different from the driving unit of the star wheel is configured by winding a chain between a driving wheel and a driven wheel that are rotationally driven, and the driven wheel is configured as a star wheel. By supporting the same so as to be freely rotatable with respect to the star wheel on the same axis, there is an advantage that the stock transporter can be easily configured and the driven wheel can be arranged compactly.

  1 and 2 are a left side view and a plan view of the preprocessing unit 1 in the combine. The pretreatment unit 1 has a structure in which a weed body 3, a pulling device 4, a cutter 6, and a culm transporting unit 7 are provided on a frame (pretreatment frame) 2 as in the prior art. The pretreatment frame 2 is configured around a longitudinal transmission cylinder 8 in the front-rear direction and a lateral transmission cylinder 9 in the left-right direction provided at the front end of the longitudinal transmission shaft 8.

  The weeding body 3 is provided at the tip of a divider frame 11 projecting forward from the lateral transmission cylinder 9. The cutter 6 is provided in front of the horizontal transmission cylinder 9 in the horizontal direction in parallel to the horizontal transmission cylinder 9. A pulling transmission cylinder 12 projects upward from the lateral transmission cylinder 9. The pulling device 4 is supported and attached to the pulling transmission cylinder 12.

  A base end portion (rear end portion) of the vertical transmission cylinder 8 is pivotally supported by a combine traveling machine body so as to be vertically movable. Thereby, the pre-processing part 1 is attached to the traveling body so that it can be moved up and down. As shown in FIG. 3, a vertical transmission shaft 13 is housed in the vertical transmission cylinder 8. In the horizontal transmission cylinder 9, a horizontal transmission shaft 14 to which a driving force is transmitted from the vertical transmission shaft 13 is housed.

  A driving force is input to the vertical transmission shaft 13 from an input pulley 15 provided on the base end side of the vertical transmission cylinder 8. In the pulling transmission cylinder 12, a pulling transmission shaft 16 to which a driving force is transmitted from the lateral transmission shaft 14 is housed. A driving force is input to each part of the preprocessing unit 1 through the vertical transmission shaft 13, the horizontal transmission shaft 14, and the pulling transmission shaft 16.

  The cereal transporting unit 7 is a left and right and center stock transporter 19L that transports the stocking belt 17, the star wheel 18, and the cereal stock after cutting. , 19R, 19C, the left and right tip transport bodies 21L, 21R, 21C that transport the cut cereal ears, the handling depth transport body 22 that adjusts the handling depth, and the handling depth is It consists of a continuous transporting body 23 that inherits and transports the adjusted stock of the cereal.

  The pre-processing unit 1 of the present embodiment is for cutting six lines, and six star wheels 18 are provided side by side in the left-right direction. A scraping belt 17 is provided above each star wheel 18 toward the front. The take-in belt 17 is wound around the driving pulley 24 and the driven pulley, and rotates by the rotational driving of the driving pulley 24.

  The right tip carrier 21R extends to the rear end of the pretreatment unit 1. The left tip carrier 21L and the right tip carrier 21R are arranged in a y-shape in plan view. The central tip transport body 21C extends near the junction of the left tip transport body 21L and the right tip transport body 21R. The central tip transport body 21C and the left tip transport body 21L have a shorter transport distance than the right tip transport body 21R.

  As shown in FIGS. 4 and 5, the left and right and center stock transporters 19L, 19R, and 19C are located below the left and right tip transporters 21L, 21R, and 21C, and the left tip transporter 21L It extends to the lower vicinity of the junction with the right tip carrier 21R. The handling depth transport body 22 supports the stock source of the cereal and is provided so as to be swingable up and down with the front end side as a fulcrum.

  The handling depth transport body 22 swings up and down and adjusts the stock depth position of the corn straw in the preprocessing unit 1 to adjust the handling depth. The cereal grains whose handle depth has been adjusted are inherited from the handle depth carrier 22 to the transfer carrier 23 on the stock market side. However, the tip side is continuously transported by the right tip transport body 21R. The cereals are then passed on to the combine feed chain and threshed by a threshing device.

  The handling depth transport body 22, the left and right and center stock transport bodies 19L, 19R, 19C, and the relay transport body 23 are arranged between a driving wheel (driving sprocket) to which driving force is input and a driven wheel (driven sprocket). It has a structure in which a transport chain is wound around. The cereal stock is clamped between the conveying chain and a clamping rail provided opposite to the conveying chain, and the cereal stock is conveyed backward by rotation of the conveying chain by the drive sprocket.

  The left and right and center ear-side transport bodies 21L, 21R, and 21C have a plurality of transport tines mounted at an appropriate interval between the drive sprocket to which the driving force is input and the driven sprocket so as to be raised and lowered. It is configured by turning the transport section. Between the transport rail supported on the pretreatment frame 2 side and the tine, the ear side of the cereal is transported backward by the tine.

  Each star wheel 18 is pivotally supported integrally or freely rotatable on a support shaft 26 fixed or rotatable on the pretreatment frame 2 side. As shown in FIGS. 3 and 6, the left outermost support shaft 26 </ b> L on which the left outermost star wheel 18 </ b> L is supported is fixed to the pretreatment frame 2 side. A cylindrical tube shaft 27L is fitted on the support shaft 26L. The cylindrical shaft 27L rotates coaxially with the support shaft. A driven sprocket 28L of the left stock transporter 19L is attached to the cylindrical shaft 27L so as to rotate integrally.

  The cylindrical shaft 27L is integrally fixed to the upper surface of the left outermost star wheel 18L. The drive pulley 24 of the take-in belt 17 is attached to the cylindrical shaft 27L so as to rotate integrally with a position above the driven sprocket 28L. The drive sprocket 29L in the left stock carrier 19L is pivotally supported by the left drive shaft 31 protruding from the pulling transmission cylinder 12. The left drive shaft 31 also supports a drive sprocket 32L of the left ear side transport body 21L.

  When the driving force is transmitted to the drive sprocket 32L of the left ear side transport body 21L and the drive sprocket 29L of the left stock source transport body 19L by the left drive shaft 31, the left ear side transport body 21L and the left stock source transport body 19L are driven. At the same time, the left outermost star wheel 18L and the scraping belt 17 positioned above the star wheel 18L are driven to rotate.

  On the other hand, as shown in FIG. 3, the right outermost support shaft 26R on which the right outermost star wheel 18R is pivotally supported is also the same as the left outermost support shaft 26L. The cylindrical tube shaft 27R is externally fitted. The cylinder shaft 27R rotates coaxially with the support shaft 26R. A driven sprocket 28R in the right stock former carrier 19R is attached to the cylindrical shaft 27R so as to rotate integrally.

  The cylindrical shaft 27R is integrally fixed to the upper surface of the right outermost star wheel 18R. A drive pulley 24 for the take-in belt 17 is attached to the cylindrical shaft 27R so as to rotate integrally with a position above the driven sprocket 28R. The drive sprocket 29R in the right stock former transport body 19R is pivotally supported by the right drive shaft 33 protruding from the vertical transmission cylinder 8.

  When the driving force is transmitted to the drive sprocket 29R of the right stock transport body 19R by the right drive shaft 33, the right stock transport body 19R is driven and the right outermost star wheel 18R and the star wheel 18R The scraping belt 17 located above is rotated. The outermost star wheel 18R on the right side and the star wheel 18A adjacent to the star wheel 18R are arranged so that their teeth mesh with each other.

  The support shaft 26A on which the star wheel 18A is pivotally supported is coaxially and rotatably inserted into a cylindrical body 27A fixed to the pretreatment frame 2 side. The star wheel 18A is attached to the support shaft 26A so as to integrally rotate at a position below the cylinder 27A, and a drive pulley 24 of the take-up belt 17 above the cylinder 27A.

  When the right outermost star wheel 18R is rotationally driven as described above, the adjacent star wheel 18A is driven by the meshing of the teeth, and the scraping belt 17 positioned above the star wheel 18A is driven.

  The other support shafts 26B, 26C, and 26D on which the other three star wheels 18B, 18C, and 18D are pivotally supported are cylindrical bodies fixed to the pretreatment frame 2 side as shown in FIGS. 27B, 27C, and 27D are coaxially and rotatably inserted.

  The star wheels 18B, 18C, and 18D are respectively positioned below the cylindrical bodies 27B, 27C, and 27D on the support shafts 26B, 26C, and 26D, and the star wheels 18B, 18C, and 18D are positioned above the cylindrical bodies 27B, 27C, and 27D. The drive pulley 24 of the take-up belt 17 corresponding to is attached so as to rotate integrally.

  The three star wheels 18B, 18C, and 18D are arranged so that their teeth mesh with the adjacent star wheels 18C and 18D in order. The star wheel 18B adjacent to the left outermost star wheel 18L is arranged so that the teeth mesh with the left outermost star wheel 18L.

  As a result, when the left outermost star wheel 18L is driven to rotate as described above, the three star wheels 18B, 18C, and 18D are driven by the meshing of the teeth, and above the star wheels 18B, 18C, and 18D. The positioned take-up belt 17 is driven.

  As described above, the left drive shaft 31 drives the left ear side transport body 21L, the left stock transport body 19L, the left four star wheels 18L, 18B, 18C, 18D, and the four left drive belts 17 to drive the right drive shaft. 33 drives the right stock former carrier 19R, the right two star wheels 18R and 18A, and the right two scooping belts 17.

  All the star wheels 18 are arranged at the same height. At this time, the star wheel 18A adjacent to the outermost star wheel 18R on the right side and the star wheel 18D adjacent to the star wheel 18A on the left side are provided at positions separated from each other so that the teeth do not contact each other. . There is no problem even if the star foils 18A and 18D are separated, because the cereal is not scraped between the star foils 18A and 18D.

  In addition, the cereals are not scraped between the second star wheel 18B from the left and the third star wheel 18C from the left. The wheels 18B and 18C cannot be provided at positions separated from each other so that the teeth do not contact each other. In the present embodiment, the teeth mesh with each other so that the driving force is transmitted.

  The support shaft 26C that pivotally supports the third star wheel 18C from the left side is located above the cylinder 27C and below the drive pulley 24 of the take-up belt 17 at the central stock transport 19C. The driven sprocket 28 </ b> C is supported by a bearing 30 so as to be freely rotatable. The driven sprocket 28C is supported coaxially with the star wheel 18C so as to freely rotate independently of the star wheel 18C.

  On the other hand, a middle transmission cylinder 34 projects from the vertical transmission cylinder 8. A shaft 36 through which a driving force is transmitted from the longitudinal transmission shaft 13 is built in and supported by the middle transmission cylinder 34. A gear case 39 in which gears 37 and 38 are accommodated is provided at the end of the middle transmission cylinder 34. From the gear case 39, the middle drive shaft 41 on which the drive sprocket 29C in the central stock transport 19C is supported is projected.

  A driving force transmitted to the shaft 36 is transmitted to the middle drive shaft 41 via gears 37 and 38. A drive sprocket 32C of the central ear-side carrier 21C is attached to the middle drive shaft 41 above the drive sprocket 29C so as to rotate integrally.

  When the driving force is transmitted from the middle drive shaft 41 to the two drive sprockets 29C, 32C, the central stock transporter 19C and the central ear transporter 21C are driven. As described above, the central stock transporter 19 </ b> C is driven by the middle drive shaft 41 that is different from the right drive shaft 33 and the left drive shaft 31 that drive the star wheel 18.

  From the base end side of the vertical transmission cylinder 8, a drive shaft 43 attached so that the drive sprocket 32R of the right ear side carrier 21R and the drive sprocket 42 of the relay carrier 23 are integrally rotated, and a handling depth carrier. A drive shaft 46 attached so that the 22 drive sprockets 44 rotate together is projected. The right ear side transport body 21R, the relay transport body 23, and the handling depth transport body 22 are driven by the drive shaft 43 or 46.

  Due to the drive mechanism of the pretreatment unit 1 as described above, the load on the right outermost star wheel 18R and the star wheel 18A adjacent to the star wheel 18R when the rice straws 18R and 18A are scraped with cereals are loaded. In addition, a load is applied when the two right-hand drive belts 17 and the right stock former transport body 19R are transported.

  On the other hand, the outermost star wheel 18L on the left side and the remaining star wheels 18B, 18C, 18D that are continuous from the star wheel 18L are loaded with the four star wheels 18L, 18B, 18C, 18D at the time of scraping the cereal In addition, the load of the remaining four scraping belts 17, the left stock transporter 19 </ b> L, and the left ear transporter 21 </ b> L is applied. However, no load is applied to all the star wheels 18 when the central stock transporter 19C and the central ear transporter 21C are transported.

  Since the central stock transporter 19C and the central ear transporter 21C are driven independently by a transport path (medium drive shaft 41) independent of the star wheel system, the transport of cereals from the star wheel 18 side is affected. It can be performed stably without receiving. In addition, since it is not necessary to take out the driving of the central stock transporter 19C and the central ear transporter 21C from the star wheel 18 side, the driving force transmission system can be simplified.

  On the other hand, the four star wheels 18L, 18B, 18C, and 18D that are continuously meshed with each other are not subjected to a load during transport of the central stock transporter 19C and the central ear transporter 21C, so the star wheels 18L, 18B, and 18C , 18D is reduced, and the strength of the star wheels 18L, 18B, 18C, 18D can be reduced.

  Further, in order to rotationally drive these star wheels 18L, 18B, 18C, 18D, the rotational driving force applied to the left outermost star wheel 18L can be reduced. As a result, the cost of the star wheel itself and the cost and simplification of the transmission system can be reduced.

  And since all the star foils 18 are arranged at the same height, the scraping position (height) of the cereals by the star foil 18 becomes the same, and the cereals when the squeezed cereals join together The posture is stable and threshing is performed efficiently.

  As shown in FIG. 7, the driven sprocket 28C of the central stock carrier 19C is attached so as to rotate integrally with a support shaft 26C that supports the star wheel 18C, and the four star wheels on the left side from the middle drive shaft 41 are engaged. A driving force may be input to the third star wheel 18C from the left among 18L, 18B, 18C, and 18D.

  However, it is necessary to attach the driven sprocket 28L of the left stock transporter 19L to the cylindrical shaft 27L to which the leftmost star wheel 18L is fixed via a bearing 35 or the like so as to freely rotate. Thus, the driven sprocket 28L is supported so as to freely rotate independently of the star wheel 18L on the same axis as the star wheel 18L.

  In this case, the four star wheels 18L, 18B, 18C, 18D and the drawing belt 17 are driven by the middle drive shaft 41, and the left stock transporter 19L drives the star wheel 18 with the right drive shaft 33 and the middle drive shaft. It is driven by a left drive shaft 31 different from 41. In the four star wheels 18L, 18B, 18C, and 18D that are continuously meshed with each other, no load is applied when the left stock transporter 19L and the left ear transporter 21L are transported. For this reason, the effect similar to the said embodiment can be acquired.

  Of the four star wheels 18L, 18B, 18C, 18D, the star wheel for inputting the driving force is not limited to the two star wheels 18L or 18C, and the driving force is input to any one of the star wheels. do it. In any case, the same effect as described above can be obtained by driving the left stock transporter 19L or the central stock transport 19C by a drive shaft different from the drive shafts for driving the four star wheels 18L, 18B, 18C, 18D. Obtainable.

  Moreover, although both the said embodiment demonstrated based on the combine for 6 line cutting (pre-processing part 1), by removing the 3rd starwheel 18D from the left, the combine for 5 line cutting (pre-processing part) It can also be applied.

It is a principal part side view of a pre-processing part. It is a principal part top view of a pre-processing part. It is a principal part transmission diagram of a pre-processing part. It is a principal part top view of the pre-processing part of the state except each ear | edge conveyance body. It is a principal part side view of the pre-processing part which shows a central stock former conveyance body. It is principal part front sectional drawing which shows the attachment state of the left star foil. It is principal part front sectional drawing which shows the attachment state of the left star foil of other embodiment.

1 Pretreatment section 18 Starfoil 18A Starhole 18B Starfoil 18C Starfoil 18D Starfoil 18L Starfoil 18R Starfoil 19C Central stock transporter (stock transporter)
19L left stock transporter (stock transporter)
19R Right stock former carrier (stock former carrier)
28C driven sprocket (driven wheel)
28L Driven sprocket (driven wheel)
29C Drive sprocket (drive wheel)
29L Drive sprocket (drive wheel)
31 Left drive shaft (drive unit)
41 Medium drive shaft (drive unit)

Claims (1)

A plurality of star wheels (18) are pivotally supported in the left-right direction on the pre-processing section (1) of the combine, and the stock is transported while supporting the stock side of the cereal that has been stirred by the star foil (18). Original transport bodies (19L), (19R) and (19C) are provided on the left and right and the center respectively, and each star wheel (18) and each stock transport body (19L), (19R) and (19C) are provided with a plurality of drive units. In the pre-processing unit driven by the other, the other star wheels (18L) and (18B) except for the outermost star wheel (18R) on either side and the star hole (18A) adjacent to the star wheel (18R) , (18C), (18D) are continuously meshed and driven by a predetermined one drive unit (31 or 41), and the stocker transport on the outermost star wheel side that is meshed continuously. Body (1 L) or central lines based on the transport body (19C) is driven by different other drive unit (41 or 31) and star wheel (driving portion 18) (31 or 41), the other star wheel (18L) , (18B), (18C), (18D) drive unit (31 or 41) different from drive unit (41 or 31) is driven to rotate the stock transporter (19C or 19L) The driven wheel (29C or 29L) and the driven wheel (28C or 28L) are wound around a chain, and the driven wheel (28C or 28L) is coaxial with the star wheel (18C or 18L). 18C or 18L) a combine pre-processing unit supported so as to be freely rotatable .

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