JP2006254706A - Reaping apparatus of combine harvester - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To enable ready adjustment of interval between left and right conveying bodies equipped with a conveying apparatus of a reaping unit. <P>SOLUTION: In the reaping apparatus 5 of a combine harvester equipped with a pair of left and right grass-dividing plates 41, a conveying apparatus 42 installed behind the grass-dividing plates and a reaping unit having a reaping blade 44 installed below the conveying apparatus 42, the conveying apparatus 42 is composed of a pair of left and right conveying bodies 55 and a screw shaft 100b is supported on the machine body in left and right directions below left and right conveying frames 54 for supporting the conveying bodies 55 and supporting arms 105 are protrusivly provided by left and right conveying frames 54 and screw bosses 105a are installed in the end on the protruded side of the supporting arms 105 to attach a screw on the screw shaft 100b and left and right conveying frames and left and right conveying frames 54 are constituted to be movable to a direction separating from each other or approaching to each other by rotating the screw shaft 100b. <P>COPYRIGHT: (C)2006,JPO&NCIPI

Description

  The present invention relates to a configuration of a reaping device provided with a plurality of reaping units and provided at a front portion of a combine.

  2. Description of the Related Art Conventionally, a combine in which a cutting device including a plurality of cutting units is mounted as a row crop header device for cutting soybeans or the like instead of a cutting device including a scraping reel and a cutting blade at the front of the machine body is known. . Each reaping unit of the reaping device consists of a pair of left and right weed plates, a transport device disposed behind the weed plate, a cutting blade disposed below the transport device, etc. The straw is transported backward by a transporting device, and is cut by a cutting blade in the process of transporting the cereal, and then the stalk is transported to a platform that communicates with the threshing device via a feeder house.

In such a reaping unit, the conveying device forms a mounting portion provided with a plurality of holes in each of the left and right conveying bodies constituting the conveying device, and a plurality of holes in each of the left and right support frames disposed below the conveying unit. And the mounting portion of each carrier is attached to the support frame and locked by a pin, thereby being supported by the support frame. And the space | interval between right-and-left conveyance bodies was made adjustable by changing the position of the pin which latches the attaching part of this conveyance body to a support frame (for example, refer patent document 1).
Japanese Utility Model Publication No. 63-15738

  However, in the conventional configuration, when adjusting the distance between the left and right transport bodies, the pins are first removed from the mounting portions of the transport body and the holes in the support frame, and the transport body is moved in the left-right direction with the pins removed. Therefore, it is necessary to lock the attachment portion of the transport body to the support frame with a pin again, which increases work man-hours and deteriorates workability. In addition, there is a problem in that the distance between the left and right transport bodies is limited by the pitch width of the holes provided in the attachment portion of the transport body and the support frame.

  The problems to be solved by the present invention are as described above. Next, means for solving the problems will be described.

  In other words, in claim 1, the combine is provided with a cutting unit having a pair of left and right weed plates, a conveying device disposed behind the weed plate, and a cutting blade disposed below the conveying device. In this reaping device, the conveying device is composed of a pair of left and right conveying bodies, below the left and right conveying frames that support the conveying bodies, the screw shaft is supported on the machine body side in the left-right direction, and the left and right conveying frames A support arm is further provided, and a screw boss is provided at the protruding end portion of the support arm and screwed to the screw shaft. By rotating the screw shaft, the left and right transport frames are separated from or approach each other. It is configured to be movable in the direction.

  According to a second aspect of the present invention, a plurality of the cutting units are juxtaposed in the left-right direction of the machine body with respect to the screw shaft.

  As effects of the present invention, the following effects can be obtained.

  According to the first aspect of the present invention, the space between the left and right transport bodies is adjusted by moving the left and right transport frames in opposite directions with a simple operation of rotating the screw shaft without requiring a separate tool. It becomes possible. Therefore, the number of work steps for adjusting the distance between the left and right transport bodies is reduced, and workability can be improved. Moreover, it becomes possible to adjust the space | interval between right-and-left conveyance bodies continuously, and the adaptability with respect to the kind and state of the grain of a conveying apparatus can be improved. Furthermore, since the cutting operation can be performed by easily adjusting the interval between the left and right transport bodies to an optimum interval with respect to the culm, the culm is reliably transported into the platform by the transport device to reduce head loss. be able to.

  According to the second aspect of the present invention, the spacing between the left and right transport bodies of the transport apparatus can be simultaneously adjusted by the same dimension in all the cutting units by rotating the handle. Therefore, the number of work steps for adjusting the distance between the left and right transport bodies is reduced, and workability can be improved.

  1 is a side view of a combine equipped with a mowing apparatus according to an embodiment of the present invention, FIG. 2 is a plan view of the same, FIG. 3 is a side view of the configuration of the mowing unit, FIG. 4 is a plan view of the same, and FIG. FIG. 6 is a side view showing the configuration of the cutting unit in a state where the front carrier is provided, FIG. 7 is a plan view of the carrier frame, and FIG. 8 is a rear view of the carrier frame. is there.

  First, the overall structure of the combine equipped with the reaping device according to the present invention will be described. In addition, in a present Example, it demonstrates using the combine for soybeans.

  As shown in FIGS. 1 and 2, a machine frame 2 is placed on a crawler type traveling device 1, and a threshing device 3 and a sorting device 4 are provided on the machine frame 2. Then, a reaping device 5 is provided in front of the threshing device 3, and the combine continuously mows the culm with the reaping device 5 while traveling on the field with the crawler type traveling device 1, and the threshing device after harvesting the culm 3 so that it can be threshed.

  Further, a grain tank 7 for storing grains selected from the threshing apparatus 3 via the sorting apparatus 4 via the lifting conveyor 6 is provided on the side of the threshing apparatus 3 and the sorting apparatus 4. A grain discharging device 8 is provided behind and above the combine, and the combiner is configured so that the grain in the grain tank 7 can be carried out of the machine body by the grain discharging device 8. Further, a cabin 9 provided with operating means for operating each device is provided in front of the grain tank 7.

  Next, the reaping device 5 will be described.

  As shown in FIGS. 1 and 2, the reaping device 5 includes a plurality of (two in this embodiment) reaping units 40 and 40, a platform 31, a transverse feed auger 32, a feeder house 33, etc. A platform 31 is fixed to the front end of the feeder house 33 communicated with the apparatus 3, and the cutting units 40 and 40 are supported by a mounting frame 46 attached to the front end of the platform 31 so as to be rotatable in the vertical direction.

  Then, a lateral feed auger 32 is installed horizontally in the platform 31, and the cereals harvested by the harvesting units 40, 40 and conveyed rearward by the lateral feed auger 32 are fed backward, and are installed in the feeder house 33. It is configured to be transported to the threshing device 3 by the transport conveyor 35. Further, a cylinder 36 is interposed between the feeder house 33 and the body frame 2, and the cutting device 5 including the cutting units 40 and 40 can be moved up and down by the expansion and contraction operation of the cylinder 36.

  As shown in FIGS. 3 and 4, the cutting unit 40 is divided by a weed board 41 or a weed board 41 provided with a weed culm in a “V” shape in plan view at the front end of the weed board support frame 72. Conveying device 42 for conveying the leaf stem portion of grass cereals rearward and upward, and a disc shape inclined downward and forward to cut the stem portion of cereals conveyed by the conveying device 42 near the ground on the conveying start end side. The cutting blade 44 and a gauge wheel 43 that keeps the height to the ground constant.

  In the cutting unit 40, support portions 47 and 47 are provided upright on both the left and right sides of a mounting frame 46 connected to the platform 31, and a drive shaft 48 and a transport drive shaft 49 are horizontally mounted on the support portions 47 and 47. The transmission pipe 50 that externally fits the transport drive shaft 49 is pivotally supported with respect to the support portions 47 and 47. And gear case 51 * 51 is provided in the middle part of the transmission pipe 50 at an appropriate interval, and a drive case 52 * 52 with a transmission shaft built up from the gear case 51 * 51 is erected. The transport frames 54 and 54 are fixed to the upper ends of the support frames 53 and 53 erected from the 52 and the mounting frame 46.

  A conveying device 42 is provided on the conveying frames 54 and 54 so as to be front-rear and rear-high. The transport device 42 is composed of a pair of left and right transport bodies 55 and 55. Each of the left and right transport bodies 55 is supported by a drive pulley 57 in which an endless belt belt 56 is rotatably supported by a shaft 60 at a rear end portion of the transport body 55 and a shaft 61 by a front end portion. The driven pulley 58 is wound around and supported by a transport cover 59. Each conveyance belt 56 is provided with protrusions 56 a having a certain length in the front-rear direction at predetermined intervals, and arranged in two rows on the conveyance surface of the conveyance belt 56.

  An output sprocket 62 is provided on the shaft 60 together with the drive pulley 57, and an input sprocket 64 is provided on the transmission shaft 63 protruding to the vicinity of the conveying belt 56, and between the output sprocket 62 and the input sprocket 64. The chain 65 is wound and supported. In this way, the left and right conveying belts 56 and 56 obtain power from the conveying drive shaft 49 via the transmission shaft 63 and the shaft 60 and face each other and rotate in opposite directions, so that the protrusions 56a and 56 of the conveying belts 56 and 56 are rotated. 56a... Is configured to pull in and pinch the grain before cutting and convey it backward along the conveying path 20 formed between the conveying belts 56 and 56.

  As shown in FIG. 5, the input sprocket 64 is arranged directly above the bearing 66 of the transmission shaft 63 so that the distance between the input sprocket 64 and the bearing 66 is as small as possible. The outer diameter of the lower portion 64 a on the bearing side of the input sprocket 64 is configured to be larger than the outer diameter of the seal portion 66 a of the bearing 66, and the upper portion of the seal portion 66 a of the bearing 66 is covered with the input sprocket 64. It has been broken. Thus, the input sprocket 64 prevents dirt and mud from entering the bearing 66 from the seal portion 66a, thereby preventing the bearing 66 from being damaged.

  In addition, as shown in FIG. 6, in the transport device 42, front transport bodies 95 and 95 can be provided on the front lower side (or front upper side) of the left and right transport bodies 55 and 55, respectively. That is, each of the left and right front transport bodies 95 includes an endless belt transport belt 96 having protrusions 96a of a predetermined length attached at predetermined intervals, and the start end (front end) thereof is from the start end (front end) of the transport body 55. Also protrudes forward and is positioned at substantially the same height as the front end of the cutting blade 44, and the front low rear height is such that the end (rear end) is positioned between the start end (front end) of the transport body 55 and the cutting blade 44. Placed in.

  The transport belts 96 of the left and right front transport bodies 95 are rotated opposite each other by obtaining power from the shaft 61 that supports the driven pulley 58 as the transport belt 56 of the transport body 55 rotates. It is configured such that the protrusions 96a, 96a,... Of the conveyor belt 96 draw in the stock of the cereal before cutting and convey it to the vicinity of the cutting blade 44 in a sandwiched state. Thereby, when the front conveyance bodies 95 and 95 are provided, it becomes possible to reliably draw in even a low-powder potato.

  A support stay 70 is rotatably supported by a fulcrum shaft 71 at the front of each of the left and right transport frames 54, and a midway portion of the weed plate support frame 72 is fixed to the support stay 70. A weed plate 41 is fixed to the front end of the weed plate support frame 72 so that the weed plate 41 can be rotated in the vertical direction with a fulcrum shaft 71 as a fulcrum. Furthermore, the base of the support rod 73 is rotatably supported by a fulcrum shaft 74 at the front portion of the transport frame 54, and a sliding body 75 provided at the rear end of the weed plate support frame 72 is externally attached to the support rod 73. It is fitted. The sliding body 75 is biased by a spring provided at the lower portion of the support rod 73, and the downward rotation of the weed board 41 is restricted.

  Further, a cutting drive shaft 67 is pivotally supported on one side of the gear cases 51 and 51 in parallel with the transport drive shaft 49, and a rear end portion of the drive case 68 is supported on the cutting drive shaft 67. The front end portion of the front end extends downward and forward. A cutting blade shaft 69 is rotatably supported on the top surface of the tip of the drive case 68 so as to protrude forward and upward, and the cutting blade 44 is fixed to the cutting blade shaft 69. The cutting blade 44 is disposed so as to incline forward and downward below the front portion of the conveying device 42 so as to obtain a driving force from the cutting drive shaft 67 via the power transmission mechanism in the driving case 68 and rotate. It is configured.

  In this way, when the cereals guided by the weeding board 41 reach the tip of the conveying device 42, the cutting units 40, 40 have protrusions 56a, 56a,... Attached to the left and right conveying belts 56. Is taken back by, is transported along the transport path of the transport device 42, and is cut by the cutting blade 44 in the middle thereof, and the cereal is further transported rearward from the rear end of the transport device 42. It is configured to be conveyed to a lateral feed auger 32 in a platform 31 disposed behind the apparatus 42.

  In each reaping unit 40, one end of an L-shaped arm 80 is supported by a fulcrum shaft 81 so as to be rotatable in the vertical direction on the front side of the conveyance frame 54 on one side of the conveyance device 42. The gauge wheel 43 is rotatably supported at the other end of the arm 80. A support frame 82 is provided at the front and rear center of the transport frame 54 so as to protrude to the left and right sides, and a bracket 83 is provided on the support frame 82 so as to protrude upward. A cylinder 84 is interposed between the central portion of the arm 80 and the bracket 83, and the arm 80 is rotated about the fulcrum shaft 81 by the expansion and contraction of the cylinder 84, so that the vertical position of the gauge wheel 43 is changed. Adjustable.

  When the gauge wheel 43 rolls up and down on the ground between the ridges, the conveyance frame 54 is rotated in the vertical direction with the conveyance drive shaft 49 as a fulcrum, so At the time of work, the weeding board 41 of the cutting unit 40, the conveying device 42, and the cutting blade 44 are moved up and down by the gauge wheel 43 following the height of the ground between the reed and the reed, and the ground height is kept constant. It is comprised so that.

  Further, a base portion of the rod 86 is pivotally supported on one side of the support portions 47 and 47, and a sliding body 87 is externally fitted in the middle portion of the rod 86, and a pin 88 projecting from the sliding body 87 is conveyed. It is pivotally connected to the rear part of the frame 54. The sliding body 87 is urged by a spring 89 provided at the tip of the rod 86, and the rear portion of the transport frame 54 is configured to rotate upward with the transport drive shaft 49 as a fulcrum. It is always urged to rotate downward. Note that the lowering of the cutting unit 40 is performed by a restriction member 90 provided at the front end of the mounting frame 46 so as to protrude downward on the support frame 82 when the transport frame 54 rotates. It is regulated by contacting the receiving portion 46a of the member 90.

  Next, the mounting structure of the left and right transport frames 54 that support the transport device 42 in each cutting unit 40 will be described in detail.

  As shown in FIG. 7, a long hole-like insertion hole 54a for inserting the transmission shaft 63 is provided in the left-right direction at the rear part of the transport frame 54, and a plurality of long holes are formed around the insertion hole 54a in the left-right direction. Are provided at predetermined intervals in parallel. Then, the bolt 22 is provided on the mounting portion 52a of the drive case 52 for supporting the rear portion of the transport frame 54 and inserting the transmission shaft 63 so that the screw shaft protrudes upward so as to correspond to the mounting holes 54b. It has been.

  In addition, a plurality of elongated mounting holes 54c and 54c are provided in the front-rear center portion of the transport frame 54 in parallel with the mounting holes 54b and 54b in the left-right direction. Bolts 22 are provided on the mounting portions 53a of the support frame 53 that supports the front and rear central portions of the transport frame 54 so as to protrude upward from the screw shafts so as to correspond to the mounting holes 54c.

  Then, the transmission shaft 63 protruding from the drive case 52 is inserted into the insertion hole 54 a of the conveyance frame 54, and the bolts 22, 22, 22, 22 of the mounting portion 52 a of the drive case 52 are inserted in the rear part of the conveyance frame 54. .. Are inserted in accordance with the provided mounting holes 54 b, 54 b..., And nuts 23 are screwed into the bolts 22 from above the transport frame 54 at arbitrary positions of the mounting holes 54 b, 54 b, 54 b, 54 b, thereby The rear portion of 54 is configured to be fixed to the mounting portion 52a of the drive case 52 by changing its left and right positions.

  Similarly, the bolts 22 and 22 of the mounting portion 53a of the support frame 53 are inserted in accordance with the arbitrary positions of the mounting holes 54c and 54c provided in the front and rear central portions of the transport frame 54, and are inserted at the arbitrary positions of the mounting holes 54c and 54c. The nuts 23 are screwed onto the bolts 22 from above the transport frame 54 so that the front and rear central portions of the transport frame 54 are changed in their left and right positions and fixed to the support frame 53.

  In this way, each conveyance frame 54 is fixed to the drive case 52 and the support frame 53 so that the left and right positions thereof can be changed within the range of the attachment holes 54b, 54b, 54b, 54b and the attachment holes 54c, 54c. A handle 100, which will be described later, is provided below the transport frame 54 as means for changing the left and right positions of the transport frame 54 in each cutting unit 40 during the fixing operation of the transport frame 54.

  As shown in FIGS. 7 and 8, the handle 100 includes a grip portion 100a and a screw portion 100b, and the grip portion 100a is integrally connected to one side of the screw portion 100b serving as a screw shaft. And the connection part of the holding | grip part 100a and the screw part 100b and the other side edge part of the screw part 100b can be freely rotated by the frame 101 * 102 attached to the outer end of the gear case 51 * 51 of the right and left cutting unit 40 * 40, respectively. So that the screw part 100b is arranged in the left-right direction below the respective conveyance frames 54 of the left and right mowing units 40, 40, and the gripping part 100a is arranged outside the body of the mowing unit 40 on the left and right sides. Has been.

  Further, in each of the left and right reaping units 40, support arms 105 and 105 are provided so as to protrude downward on one side of the rear portions of the left and right transport frames 54 and 54, and screw bosses are provided at the projecting side ends of the support frames 105 and 105. 105a and 105a are formed. Here, among the screw bosses 105a of the respective support arms 105, the left screw boss 105aL of the support arm 105 provided in the left conveyance frame 54 is formed with a left screw spiral groove, and the support provided in the right conveyance frame 54 is provided. A right screw spiral groove is formed in the right screw boss 105aR of the arm 105.

  Then, right and left spiral grooves are alternately formed at equal intervals on the screw portion 100b of the handle 100, and the screw portion 100b is screwed into the left screw boss 105aL and the right screw boss 105aR of the support arms 105 and 105. Has been. That is, the screw portion 100b of the handle 100 is screwed with the left screw boss 105aL of the support arm 105 provided on the left conveyance frame 54 through the left screw spiral groove, and is provided on the right conveyance frame 54 through the right screw spiral groove. The support arm 105 is configured to be screwed with the right screw boss 105aR.

  Therefore, when the screw portion 100b is rotated in the right-hand screw direction by the grip portion 100a of the handle 100, the left and right thread bosses 105aL and 105aR on the screw portion 100b move in a direction approaching each other in the left and right cutting units 40. The distance between the transport frames 54 and 54 becomes smaller, and the distance L1 between the left and right transport bodies 55 and 55 on the transport frames 54 and 54 shown in FIGS. Conversely, when the screw portion 100b is rotated in the left-handed direction by the grip portion 100a of the handle 100, the left and right screw bosses 105a on the screw portion 100b are moved away from each other in the left and right cutting units 40, The distance between the transport frames 54 and 54 is increased, and the distance L1 between the left and right transport bodies 55 and 55 shown in FIGS. 4 and 8 is increased.

  That is, by changing the screwing position of the screw boss 105a of the support arm 105 provided on each conveyance frame 54 with respect to the screw portion 100b of the handle 100 by the rotation operation of the handle 100, the left and right conveyance frames 54 and 54 are moved in opposite directions. The distance L1 between the left and right transport bodies 55 and 55 can be adjusted. At this time, since all the cutting units 40 perform the same operation, the interval L2 between the left and right cutting units 40 and 40 corresponding to the strip interval shown in FIGS. 4 and 8 does not change and remains constant. Retained.

  With this configuration, the distance L1 between the left and right transport bodies 55 and 55 can be adjusted by a simple operation of rotating the handle 100 without requiring a separate tool. Moreover, in all the cutting units 40, the space | interval L1 between the left-right conveyance bodies 55 * 55 can be adjusted only the same dimension simultaneously. Therefore, the work man-hour when adjusting the space | interval L1 between the left-right conveyance bodies 55 * 55 decreases, and it can aim at the improvement of workability | operativity.

  Moreover, it becomes possible to adjust the space | interval L1 between the right-and-left conveyance bodies 55 * 55 steplessly, and the adaptability with respect to the kind and state of the grain of the conveying apparatus 42 can be improved. Further, since the cutting operation can be performed by easily adjusting the distance L1 between the left and right transport bodies 55, 55 to the optimum distance with respect to the culm, the culm is surely brought into the platform 31 by the transport device 42. It can be transported to reduce head loss.

The side view of the combine equipped with the cutting device which concerns on one Example of this invention. FIG. The side view which shows the structure of a cutting unit. FIG. Sectional drawing which shows the structure of the bearing part of a transmission shaft. The side view which shows the structure of the cutting unit in the state which provided the front conveyance body. The top view of a conveyance frame. The rear view of a conveyance frame.

Explanation of symbols

DESCRIPTION OF SYMBOLS 5 Cutting device 40 Cutting unit 41 Weeding board 42 Conveying device 44 Cutting blade 46 Mounting frame 54 Conveying frame 55 Conveying body 100 Handle 100a Grasping part 100b Screw part (screw shaft)
105 Support arm 105a Screw boss

Claims (2)

  In the combine mowing apparatus provided with a mowing unit having a pair of left and right weed boards, a conveying apparatus disposed behind the weed board, and a cutting blade disposed below the conveying apparatus, the conveying apparatus Is composed of a pair of left and right transport bodies, and below the left and right transport frames that support the transport bodies, the screw shaft is supported on the machine body side in the left-right direction, and a support arm projects from the left and right transport frames. The support arm is provided with a screw boss at the projecting side end, screwed onto the screw shaft, and rotated to allow the left and right transport frames to move in a direction away from or toward each other. Combine harvester. The combine mowing apparatus according to claim 1, wherein a plurality of the mowing units are arranged side by side in the left-right direction of the machine body with respect to the screw shaft.

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